Famsun Muyang SJPS215 User manual

Muyang SJPS215
Single-screw Extruder
Operation Manual
Prior to use, please read through this operation manual
carefully and keep it properly for reference in the future

Foreword
1. Thanks for purchasing Muyang SJPS215 Single-Screw Extruder.
2. This Operation Manual is an important technical document for safe and correct operation of SJPS215
Single-Screw Extruder.
3.Prior to operation, please read this operation manual carefully and get to know the safety instructions,
performances, requirements for installation and operation etc. of this extruder in order to adroitly operate
and use this machine, therefore to create more benefits.
4. This machine must be operated in accordance with this Manual. Improper operation or breach of the
operation regulations will cause severe loss.
5. Following are Safety-Alert Symbols and signal words in this Manual.
6. Prior to use, please read through this Manual and well understand the signal words, especially the
DANGER ones.
7. Operation and maintenance personnel should read this Operation Manual carefully before they carry
out the operation and maintenance of the equipment.
8. Keep the Manual in a place near the machine, so as to look it up at any moment.
9. Please operate and maintain this machine with thorough understanding of this Operation Manual.
10. Please contact our Company to purchase a new Operation Manual for this machine if the Manual is
missing or damaged.
11. If the machine is transferred to the third party, please pass this Manual along with the machine.
12. Attention, Following are some explanations about the application and the warranty of this machine.
①Application: Extrusion of powdery and granular materials.
②Warranty item: Extruder body
③Warranty period: within 1 year after purchase of the equipment, except wearing parts.
[Note]:
(1)Jiangsu Muyang Holdings Co., Ltd reserves the copyright of this document and related contents. The
recipient of this Manual shall recognize the copyright and shall not provide the document wholly or
partially to the third party without Muyang’s authorization in writing beforehand, and shall not use it for
other purpose.
(2) No further notification shall be given should the relative technologies and the parameters change.
(3)The foreign language version of this Operation Manual is translated based on the Chinese version of
this Operation Manual of Jiangsu Muyang Holdings Co., Ltd, therefore, in case of divergence, the
Chinese version of this Operation Manual shall govern.

CONTENTS
1 Safety instructions .................................................................................................................................................... 1
1.1 Environment conditions......................................................................................................................................... 1
1.2 Description of warning signs................................................................................................................................. 1
1.3 Description of safety signs..................................................................................................................................... 2
1.4 Special notes.......................................................................................................................................................... 5
1.5 Safety instrustions in transportation, storage and installation................................................................................ 6
1.6 Safety instructions in operation, inspection and maintenance............................................................................... 7
1.7 Personal protection ................................................................................................................................................ 8
1.8 Explosion Protection: Precautions against dust explosion and fire hazard............................................................ 9
1.9 Other precautions (environmental protection measurements)..............................................................................11
2 General ................................................................................................................................................................... 12
2.1 Application and adaptability................................................................................................................................ 12
2.2 Main components and working principle ............................................................................................................ 12
2.2.1 Main components.............................................................................................................................................. 12
2.2.2 Working process ............................................................................................................................................... 13
2.3 Introduction of equipment components............................................................................................................... 13
2.3.1 Feeding bin....................................................................................................................................................... 13
2.3.2 Feeder............................................................................................................................................................... 14
2.3.3 Conditioner....................................................................................................................................................... 15
2.3.4 Principal machine of extruder........................................................................................................................... 18
2.3.5 Pipeline system................................................................................................................................................. 18
2.4 Functions and features......................................................................................................................................... 23
3 Specifications of the extruder................................................................................................................................. 24
3.1 Basic Specification.............................................................................................................................................. 24
3.1.1 Model description............................................................................................................................................. 24
3.1.2 Main technical parameters................................................................................................................................ 24
3.2 Working condition ............................................................................................................................................... 25
4 Transportation and installation ............................................................................................................................... 26
4.1 Transportation...................................................................................................................................................... 26
4.2 Equipment installation......................................................................................................................................... 28
4.2.1 The installation of the extruder......................................................................................................................... 28
4.2.2 Installation of bridge-breaking feeding bin and feeder..................................................................................... 31
4.2.3 Installation of conditioner................................................................................................................................. 31
4.2.4 Installation of the pipeline system.................................................................................................................... 32
4.2.5 Installation of belt pulley and V-belt................................................................................................................. 35
4.3 Electric installation.............................................................................................................................................. 36
5 Operations............................................................................................................................................................... 55
5.1 Special notes........................................................................................................................................................ 55

5.2 Operation procedure of startup (auto-control mode)........................................................................................... 55
5.3 Shutdown operation............................................................................................................................................. 59
5.4 Emergency stop and restart procedure................................................................................................................. 60
6 Maintenance and repair........................................................................................................................................... 61
6.1 Precautions for inspection, repair and maintenance ............................................................................................ 61
6.2 Daily inspection and periodical inspection.......................................................................................................... 62
6.2.1 List of daily inspection items............................................................................................................................ 62
6.2.2 List of periodical inspection items.................................................................................................................... 63
6.3 Maintenance of mechanical parts ........................................................................................................................ 64
6.4 Replacement of circulating lubrication oil........................................................................................................... 64
6.4.1 Specifications of lubrication oil........................................................................................................................ 64
6.4.2 Oil drain and refill ............................................................................................................................................ 65
6.5 Other lubrication points....................................................................................................................................... 65
6.6 Adjustment items and methods............................................................................................................................ 66
6.6.1Adjustment of configuration............................................................................................................................. 66
6.6.2 Removal and installation of taper sleeve.......................................................................................................... 67
6.6.3 Replacement of bearing pedestal seals ............................................................................................................. 67
6.7 Malfunction and troubleshooting......................................................................................................................... 70
6.8 Tools for repair and maintenance......................................................................................................................... 72
6.9 Long-term out-of-service..................................................................................................................................... 73
6.10 Exploded diagram of various parts.................................................................................................................... 73
6.10.1 Feeding bin..................................................................................................................................................... 73
6.10.2 Feeder............................................................................................................................................................. 74
6.10.3 Upper-pass conditioner................................................................................................................................... 77
6.10.4 Lower-pass conditioner................................................................................................................................... 79
6.10.5 Steam and water addition pipeline for upper conditioner (SPTZ45_2, SPTZ39_2)....................................... 84
6.10.6 Seal plate assembly and bearing pedestal assembly of conditioner................................................................ 85
6.10.7 Steam pipeline for lower-pass conditioner ..................................................................................................... 87
6.10.8 Main motor and power transmission .............................................................................................................. 89
6.10.9 Extruder barrel................................................................................................................................................ 90
6.10.10 Screw head assembly.................................................................................................................................... 91
6.10.11 Discharge device........................................................................................................................................... 92
6.10.12 TypeⅠdie plate assembly............................................................................................................................. 93
6.10.13 Type II die plate assembly ............................................................................................................................ 93
6.10.14 Cutting rotor assembly.................................................................................................................................. 94
6.10.15 Lubrication oil way....................................................................................................................................... 95
6.10.16 Cutting blade installation fixture .................................................................................................................. 96
6.10.17 Steam pipeline system .................................................................................................................................. 96
6.10.18 Water pipeline system................................................................................................................................... 97

6.10.19 Cutting device............................................................................................................................................... 98
6.10.20 Pipeline by principal machine....................................................................................................................... 98
6.10.21 Flow-meter...................................................................................................................................................101
6.10.22 By-pass ........................................................................................................................................................102
6.10.23 Steam distribution pipeline..........................................................................................................................103
6.11 Spare parts ........................................................................................................................................................104
6.11 .1 Spare parts.....................................................................................................................................................104
6.11.2 Spare part list.................................................................................................................................................104
6.11.3 Order list of spare parts..................................................................................................................................123
7 Appendix................................................................................................................................................................124
7.1 List of documents with shipment........................................................................................................................124
7.2 Contact information............................................................................................................................................124
7.3 Muyang SJPS215 Single-Screw Extruder (list of operation manuals)...............................................................125

1
1 Safety instructions
1.1 Environment conditions
Please install the equipment according to the following conditions for safe operations.
(1)Please install the equipment indoors according to following conditions:
．Ambient temperature range (-10～+40℃)
．Relative humidity range: 30～85%
．Altitude: less than1000m
．Make indoor clean and vented.
．Ensure the equipment far away from the corrosive gas, inflammable and explosive gas as
well as steamy wet environment.
(2)Power source: 220v/1ph/50Hz and 380v/3ph/50Hz, or refer to the nameplate; Compressed air
pressure≧0.6Mpa.
(3)To facilitate use, operation, maintenance and inspection of the machine, adequate clearances around it
shall be required.
The scaled diagram for installation, please refer to Fig.4-6
(4) Please place the equipment level.
(5)The vibration by other complicated environmental conditions may not exceed12 mm·s-1.
1.2 Description of warning signs
(1)In order to well understand this operation Manual, the safety warning signs are classified as following.
(2)These warning signs have been set up according to the operating regulations and safety precautions
for the equipment. In order to avoid dangerous accidents, this Operation Manual also includes detailed
preventions. Please operate the equipment according to the instructions based on sufficient
understanding of warning signs.
Table1-1Description of warning signs
This sign warns: In order to avoid death and serious injury
accidents, please be sure to operate the equipment according to
relevant stipulations of safety instructions.
This sign warns: In order to avoid potential dangerous accidents
and serious injuries, please operate the equipment according to
relevant stipulations of safety instructions.
This sign warns: In order to avoid minor and potential moderate
injuries, please operate the equipment according to relevant
stipulations of safety instructions.

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1.3 Description of safety signs
(1)Relevant safety signs are posted at the corresponding dangerous positions of the equipment to
personal safety.
(2)All the safety signs are indicated in Fig.1-1～Fig.1-12. On basis of good understanding of these safety
signs, install, adjust, operate, maintain and inspect the equipment according to the contents indicated by
these signs.
(3)Please place these safety signs near the equipment. Do not damage or cover the signs.
(4) When these safety signs have fallen off or been damaged, please replace them with new ones.
(5)If you want to order new signs, please kindly contact us.
Table1-2 Safety signs used for this extruder
No.
Part name
Ordering code
Description
1
Beware of electric shock
COMM65010010
Do not open the junction box until the power supply is
switched off.
2
Beware of injury by
mechanical movement.
COMM65010008
Do not open the access door when the machine is in
running and until it has been completely stopped.
3
Check the lubricant
level
COMM65010023
Be sure to check the oil level of tank.
4
Prevent scald (high
temperature)
COMM65010007
Do not touch the machine with bare hands when it is
working.
5
Do not remove the
guard shield
COMM65010007
Do not remove the guard shield when the machine is in
running
6
No climbing
COMM65010013
Do not climb or stand on the equipment.
7
Wear protective gloves
COMM65010015
Wear protective gloves when inspecting and repairing
the equipment
8
Maintenance to follow
the operation manual
COMM65010016
Maintenance according to the Operation Manual
9
Rotation direction of
double- shaft
COMM65010006
Sign for rotation direction of double- shaft
10
Right-hand direction
COMM65010002
Right-hand direction sign
11
Left-hand direction
COMM65010001
Left-hand direction sign.
12
Clockwise direction
mark
COMM65010005
Instruction mark: Clockwise direction
Fig.1-1 Beware of electric shock movement Fig.1-2 Beware of injuries by mechanical

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Fig.1-3 Check lubrication level Fig.1-4 Prevent scald (high temperature)
Fig.1-5 Do not remove the guard shield Fig.1-6 Do not climb or stand on the equipment.
Fig.1-7Wear protective gloves Fig.1-8 Maintenance to follow the operation manual.
Fig.1-9 Double-shaft direction Fig.1-10 Right-hand direction sign
Fig.1-11 Left-hand direction sign Fig.1-12 Clockwise direction
The SJPS215 Extruder set can be divided into 4 elements: a feed bin, a feeder, a conditioner and a
principal machine. The required safety signs are posted on the corresponding positions of these four
elements, for detail see Fig.1-13～Fig.1-16. The arrow indicated in each box in picture refers to the
corresponding posted position and the number in the box represents contents in Table 1-2.

4
Fig.1-13 Posted position of safety signs on the principal machine
Fig.1-14 Posted position of safety signs on the conditioner
4
1
5, 6, 11
5
6, 7, 8
2, 4
2,
4
2,
4
1
4
9

5
Fig.1-15 Posted positions of safety signs on the feeder
Fig.1-16 Posted positions of safety signs on the feed bin
1.4 Special notes
(1)The said equipment operators refer to all personnel who should participate in operation,
inspection and maintenance etc.
(2)The equipment operator must possess satisfactory understanding of the Operation manual.
(3)The owner has the duty and obligation to educate all operation personnel with the safety
instructions of the Operation Manual for the equipment.
(4) While obeying all the safety instructions herewith, the users must comply with all other
safety regulations and stipulations to prevent accidents.
(5) All related employees should receive safety training. The enterprise management of user

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should be in charge of the training and observe the national, local and company’s other safety
regulations.
(6)All the responsibilities for any accidents or damages to the equipment shall not be borne by
manufacturer and commission agent if the equipment is not operated according to the
Operation manual.
(7) Please install, use and operate the equipment correctly. Whoever taking off guard or signs
to destroy its function should be responsible for the safety consequences.
(8)In normal production, high pressure exists in the extrusion barrels and thus the installation
of the extrusion barrels must meet all the requirements to firmly connect the barrels in
theoretical way and practical application. However, accident such as “ejection”out of the
extrusion barrels or discharge device during production may occur due to improper installation
and screw fatigue. Therefore, no one is allowed to stand by the extrusion barrels when
extruder is in running.
(9)Any changes to the equipment shall not affect the functions and safety performances of the
equipment.
(10) Be sure to run the extruder under strict obeying all regulations for prevention of accidents.
(11) Should any accidents occur due to failure in obeying the stipulations of the Operation
Manual without the control system for Muyang equipment used as per the conditions
mentioned above, Muyang will deny any responsibility. If Muyang is required to take such
responsibility, we will reserve the right to investigate and affix the liability of the party who is
responsible.
1.5 Safety instrustions in transportation, storage and installation
(1)The equipment must be placed and handled by professional.
(2)Please use designated tools (steel cable, crane, hoist etc.) to lift the equipment according to
designated sequence and method.
(3)Authorized staff only for lift operation.
(4) In order to prevent serious injury accidents, no one is allowed to present under the
equipment during hoisting.
(5)The capacity of hoisting tools should be more than total weight of the equipment.
(6)When the equipment is stored temporarily, please place the equipment level and keep a
constant temperature and indoors clean.
(7) For transportation, it is not allowed to damage the equipment by packing. It should be
reported to the manager immediately in case of any machine damage and missing parts
during transportation.
(8)In installation, enough clearance should be allowed for future maintenance and
replacement of the equipment.
(9)Prior to installation, all machine parts must be kept in their original package. The machine
parts and packing boxes should be properly covered and stored in places sheltered from rain,
sunlight, and damp.

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(10)The cover plate, protection hood or guard are usually installed and delivered together with
the machine. They can only be disassembled with tools. And the machines required with the
protection devices can never be put into work until such devices have been properly installed.
1.6 Safety instructions in operation, inspection and maintenance
(1)The operation, inspection, repair and maintenance of the equipment shall be carried out
only by the trained technical personnel according to applicable specifications provided
together with the equipment. Electric installation shall be performed only by professionals
according to relevant electric safety standards.
(2)For maintenance or repairing, the power must be cut off so as to prevent the motor from
unauthorized start.
(3)For operation, installation, repair and maintenance, please be sure to turn off and lock the
main power switch, and place the signboard at the workshop gateway, in front of the electric
control cabinet, in the control room, and near the extruder respectively, so as to prevent the
motor from accidental tripping.
(4) In operation, a special attention shall be paid to the positions with attached safety signs.
(5)Do not operate when the safety protection device is off or the access door is open. It is
prohibited to open the access door until the machine comes to full stop.
(6)If any trouble occurs in the access door or safety protection device, please repair or replace
them at once.
(7)The safety protection devices can never be dismounted, covered or bypassed at liberty.
They can never be opened until the machine has completely stopped. And the machine can
only be started when these safety protection devices are in good order.
(8)The feeding bin gate, feeder gate, conditioner gate, guard shield, cutting cart guard shield
and others may not be opened or detached, and it is not allowed to remove or throw them
away in the production! Otherwise, it will harm personnel safety. These devices shall be
repaired or replaced immediately when any malfunction occurs.
(9)When the machine is scheduled to stop, make plans to prevent the feed hopper, the feeder,
conditioner, principal machine of the extruder from being started by any unauthorized start.
(10) Except the maintenance of the equipment, it is not allowed to take the guards off of
sprocket wheels and the two cylinders.
(11) When the safety guards or access gates are opened or the safety devices are
disassembled in order to inspect, adjust, repair and maintain the equipment or replace the
parts,required safety measures must be in place prior to such operations.
(12)When the machine is running, it is strictly forbidden to put fingers near the running
components.Such work as inspection, maintenance and cleaning etc cannot be done until the
rotor of the extruder has been completely stopped.
(13) In case maintenance and inspection work should be done with a welder or other tools that
can generate sparks, take strict safety precautions against dust explosion and combustion
(see "Explosion protection").
(14)If the parts are damaged, please repair or replace them immediately.

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(15)Ensure the safety of the electric system. Before the electric circuit is powdered off, it is
strictly prohibited to open the terminal box to avoid electric shock.
(16)The electric control system of the extruder must comply with following instructions.
Otherwise, the supplier will deny the technical safety responsibility.
①The electric control system of the extruder must be supplied by Jiangsu Muyang Holdings
Co., Ltd.
②The equipment must be checked by an expert from Muyang before commissioning.
③The electric control is a part of the safety regulations for accident prevention.
④Prior to commissioning, the control system must be tested by an expert from Muyang
according to the testing list and a permit will be signed off by the expert.
⑤If the control system for Muyang equipment does not go through the conditions above,
Muyang will deny any responsibility. If Muyang is required to take the responsibility, we will
reserve the right to investigate and affix the liability of the party who is responsible.
1.7 Personal protection
(1) All the mechanical equipment manufactured by Jiangsu Muyang Holdings Co., Ltd has
safety devices that are consistent with modern technical frontier and generally effective safety
rules prior to being shipped out so that the customers can use the machines in accordance
with the regulations.
(2) If the operators employed lack of communication skills, the owner has the responsibility to
explain to them clearly where dangers exist and warn them that special attention should be
exercised.
(3)In order to ensure safety and health for the workers during production process, it is
required to use personal protection equipment (such as gloves, breathing masks and safety
shoes) during operation.
(4) Please execute the special regulations on accident prevention in the operation manual
provided by Muyang.
(5) The enterprises are obligated to execute following regulations to ensure operators' safety.
①The guards must be mounted at any time and kept in place. It is very dangerous when they
are opened or dismantled. It may cause casualty accident. This is also applicable to the
preventive device of the robot.
②The safety limit switches should always be kept in good order. Bypass or discard of the
safety limit switches is not allowed.
③The drive motor must be switched off absolutely to stop the machine during inspection,
commissioning, repair and maintenance. This can be done through a full-phase cut-off and
lockable switch which is installed near the machine or on the operation desk or the control
panel on site. It is not enough only to screw off the fuse wire!
④If the machine needs other energy like pneumatic, hydraulic, steam and hot water energy, it
is necessary to cut off their energy supply or turn off the switch and to release the pressure in
the internal pipeline system of the machine.

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⑤As for handling heated or cooled parts and components of the machine, watch for the
danger of burning or scalding, frost-bitting.
⑥If you have pressed the emergency-stop switch to shut down the machine and you want to
reset the switch, it is not permissible to only re-press this button rather to turn on the main
switch to restart the machine.
⑦If some machines are equipped with a partial shutdown system, a special care should be
taken. Read the instruction manuals provided for the machine carefully. In such machines with
a partial shutdown system, temperature will rise because pressure or vacuum will build up
after they have been used for a while.
⑧The cleaning, lubricating and oiling of the machine or its parts and components may be
carried out only when the machine is not in running. If you have to climb on or enter the
machine to do such work, the following rule shall be mandatory without exception: the power
supply of motors must be cut off absolutely and the switch must be locked out with warning tag
attached.Attention must be paid to safety measures for climbing.
⑨Be careful: sampling from inside of the machine can never be carried out unless there is not
any danger. Usually, the samples can be taken from the pipe under the machine instead of
inside of machine.
⑩Clean out the deposited dust, dirt and materials frequently. Keeping the machine clean can
enhance production safety and housekeeping level of workshop, and is also beneficial to
prevent dust explosion.
⑪In case of oil (grease) leakage, clean it up immediately and seal well the place where
leakage occurs. Oil or grease leakage on the floor will easily bring about hazards to the
operators.
⑫During operation, the machine must be equipped with safety devices, which may be neither
removed and abandoned nor reduced in functions. Otherwise, Muyang is not responsible for
any accidents resulted wherefrom and reserves the right to ascertain where the responsibility
lies.
1.8 Explosion Protection: Precautions against dust explosion and fire hazard
(1) General housekeeping
①Keeping the work place with combustible dust free is an important condition for safe production.
②Ensure not to pile bagged or bulk materials between machines.
③In order to reduce dust emission to surrounding areas, all conveying devices, air pipe, filter bags should
be kept in good condition without any leakage especially pipes and covers of the conveying devices.
④In order to reduce dust explosion hazard, dusts must be cleaned out frequently and effectively
everywhere.
⑤Keep all motors free of deposited dusts.
(2)Regular inspection and maintenance
①Check the safety devices such as speed monitor or the like apparatus regularly, at least once a week.

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②Check and clean the magnetic separator regularly, at least once a day.
③In order to avoid heat generation, it is necessary to regularly check the functions of all main shafts and
bearings, at least once a week, and to fill up with lubricant on regular basis.
(3)Electric apparatus
Regularly check the electric apparatus and articles, and special attention should be paid to the
following points:
①Do not use any flashlights and other lamps without shielding or explosion-proof glass.
②Do not use any cable extension or electric heater.
③Repair or replace the electric apparatus and equipment immediately if any failure occurs.
④Do not install cables directly on the floor.
⑤Cut off the power supply of the machine after work.
⑥Assign an electrician to check the insulation, at least once a year, of all the power lines of
electric network according to relevant regulations.
(4)Smoking and welding
①Smoking is forbidden. Such stipulate is applicable to all workers and staff of the enterprise
as well as guests, customers, outcomers, and drivers visiting the factory.
②If the tools such as welding machine or soldering lamp (flame soldering lamp) etc. are
required for repair or installation, do as best as possible to arrange the work in a special
workshop or on a designated site.
③For occasional welding or the like work directly in production area or warehouse, submit
applications in writing to a concerned supervisor in advance for written approval. Only can the
above mentioned operations be carried out when special safety measures have been taken,
such as laying water soaked canvas or special fire-resistent canvas with fire extinguishers
standing by. After completion of the operation, monitor the welding site and the surrounding
area for at least 10 hours.
④The torch cutting sparks are very dangerous.They can travel across through the narrow
clearance of walls and drop downstairs or to the next rooms, or even fly off 10m away in
distance. If the sparks drop in dusts, fire accidents may occur at any time.
⑤Welding is prohibited on a running conveyor. If the welding work is a must, shut down the
conveyor first, and then make a thorough cleaning and isolate both sides of the welding site
tightly with materials like mineral wool to avoid connecting with other conveying devices, silos
or tanks. If the chutes or conveying pipes require welding work, disassemble them or
disconnect their lower ends with silo or tank and seal them to avoid welding sparks entering
the conveying pipes or silos.
(5)Effect of static electricity
①To ensure the safety of electric circuits and avoid explosion resulted from spark discharge.
②The paint coat at the electric connections must be removed.

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1.9 Other precautions (environmental protection measurements)
If you decide not to use the machine any longer after it is used for a certain number of years (about
8-10 years), the measures for environmental protection and reutilization should be taken.
(1) Drain the liquids inside the machine (like motor oil, gearbox oil, brake oil and coolant etc.)
into special containers and send them to the designated workshop.
(2) Pick up the plastic parts for reutilization by others.
(3) Sort out the metal parts for special handling.

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2 General
2.1 Application and adaptability
SJPS215 Single-Screw Extruder developed by MuyangHoldings Co., Ltd (hereafter referred to as
"extruder") is mainly used for processing floating and sinking feed in aquafeed industry
As for a pioneer application in new fields, please consult Muyang experts for further technology support.
2.2 Main components and working principle
2.2.1 Main components
The mechanical equipment of extruder system is mainly composed of feeding bin, feeder, conditioner,
principle machine and pipeline system. See Fig. 2-1. There is electric control unit, besides the mechanical
equipment.
1. Feeding bin 2.Feeder 3.Conditioner 4.Extruder principal machine 5.Pipeline system
Fig.2-1 General structure of Extruder
Table 2-1The main equipment composition of SJPS215 Single-Screw Extruder
No.
Model
Part name
Code
Remarks
1
TXLP120B
Anti-bridging
(Live-bottom)feeding bin
TXLP004A
2
TWLL24
Feeder
TWLL006A
3
SPTZ39_2
Triple-shaft Conditioner
SPTZ007B
Standard configuration
SPTZ45_2
SPTZ008B
Optional(or as the standard configuration for the main motor
with the power of 315 kw)
4
SJPS215
Single-screw Extruder
SJPS009B
5
MYGL215
Pipeline system
MYGL011B
Optional(by customer if not selected)
1
2
5
4
3

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2.2.2 Working process
First of all, the materials prepared, blended and pulverized enter the feeding bin with bridge-breaking
device for further process. Then the materials in bridge-breaking feeding bin are delivered by the feeder to
the double-shaft differential-speed conditioner (DDC) for conditioning where mixed with injected steady,
continuous and metered steam, water, and other liquids.
The materials being conditioned for a certain period of time enter feeding section of the extruder
assembly for being conveyed from the feeding section, mainly used to convey and primarily compress the
materials, to kneading section; in the kneading section, materials will be gradually cured or dissolved
through strong stirring, mixing and shearing; meanwhile pressure and temperature will further rise at the
final curing section. As a result, the materials will be cured more; starch will be gelatinized further; fat and
protein will be denaturalized; and thereafter all get homogenized to form a non-crystal texture. Finally,
such materials will be extruded out and cut into shapes through the discharging assembly.
2.3 Introduction of equipment components
2.3.1 Feeding bin
The feeding bin mainly consists of bin body, agitator, gasket, gear reducer and motor. See Fig.2-2.
1.Bin body 2.Agitator 3.Sealing ring 4.Speed reducer 5.Motor
Fig.2-2 Feeding bin
When the extruder is running, it is very important to ensure continuous and steady feeding of
materials. If the feeding is inconsistent, the extruder will run unsteadily, and consequently the quality of
expanded products will not be uniform. If feeding is cut off, it may cause blockage of the machine and thus
downtime. Because the raw materials of products for extrusion (especially the products with small size)
have small granularity and bad flowability, the bridging can be easily formed in the bin, causing
inconsistent and intermittent feeding. This bridge-breaking feeding bin is designed specifically for
resolution of such problem. For its main structure, see Fig.2-2.
Feeding
Discharging

14
The bin body is cylindrical and equipped with an agitator at the bottom to ensure continuous and
steady feeding to the next process. The bin has a certain capacity to provide operator enough time for
troubleshooting in case of flow stop from the previous procedure.
The rotation direction of bridge-breaking feeding bin can be forward or reverse, and the rotation
direction of bridge-breaking tower should be in line with the discharge direction of the feeder.
2.3.2 Feeder
Feeder consists of sealed bearing, trough, screw, access door, chain driving system, variable frequency
connverter motor (or VFD). See Fig.2-3. The feeder is mainly used for quantitative feeding of materials
into the conditioner with variable-frequency controlled motor. The revolution can be adjusted based on
actual production condition.A cleaning door is located at its top part for easy cleaning.
1. Bearing seal 2.Trough 3. Auger 4.Cleaning door 5.Chain drive 6.Convertor motor
Fig.2-3 Feeder
For parameters of feeder please refer to Table2-2.
Table2-2 Main technical parameters
Name
Model
Motor
power
Conveying
capacity
Center distance between inlet and outlet
Feeder
TWLL
24A
3 kW
3～16T/H
900,1000 ,1100,1200 ,1300 ,1400,1500,1600,1700,1800,1900
4 kW
2100,2100,2200,2300,2400,2500,2600,2700,2800,2900,3000,3100,
3200
The feeding can be controlled by the VFD. Different feeding frequency makes different feeding rates
as shown in Fig.2-4, a relationship between the feeding frequency and feeding rate.
The referenced data in this Figure are closer to the data of common freshwater fish feed. Please note
that different materials differ in bulk densities, which will change the curved line in Fig.2-4. The main
factors to cause bulk density differences are:
(1)Different formulas;
(2)Material of different grinding fineness;
(3) The material quantity in the feeding bin to cause bulk density difference in the feeder.
Discharging
Feeding
Discharging

15
Fig.2-4 Relationship between frequency and feeding rate for the production of common freshwater
fish feed
2.3.3 Conditioner
Conditioner for this system adopts SPTZ_39 or SPTZ_45 triple-shaft conditioner, which consists of
support bracket, a DDC conditioner, a single-pass conditioner, and steam and water addition system. See
Fig. 2-5.
1.Support bracket 2.DDC Conditioner 3.Single-shaft conditioner 4.Steam and water addition system
Fig.2-5 Triple-shaft conditioner
3
4
2
1