SHJ-20 twin screw mixing extruder configuration details ( for reference only )
List of typical material operation capabilities of SHJ20 machine (reference value)
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crafting process
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List of typical materials
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Operating capacity Kg/h (reference value)
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Blending modification
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PE, PP, PS+SBS; PA+EPDM; PP+NBR; EVA+silicone rubber, etc.
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2-10
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PE, PA, PC, CPE+ABS (alloy); ABS+TPU; PBT+PET; PP+PE, etc.
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2-10
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Filling modification
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PE, PP, EVA, etc. + calcium carbonate, talc, titanium dioxide; ABS, PC; PS, etc. + aluminum hydroxide, magnesium hydroxide, antimony oxide
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2-10
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PP, PA, ABS+iron powder, sulfur powder, ceramic powder
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3-15
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Functional masterbatch
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PP, PA, ABS, PBT, etc. + flame retardant and other additives: combustion masterbatch
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2-10
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PE, PP, PS, etc. + starch: degradable masterbatch
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2-10
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PE+anti-fogging agent, stabilizer: double anti-masterbatch
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2-10
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PE, EVA=ABS, etc. + carbon black: black masterbatch
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2-8
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Masterbatch
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PE, PP, ABS, AS, PA, EVA, PET + pigments and additives
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2-10
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Glass fiber, carbon fiber reinforced
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PP, PBT, ABS, AS, PA, PC, POM, PPS, PET, etc. + long fiber, short fiber, carbon fiber, whisker, etc.
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1-8
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Various cable materials
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HDPE, LDPE, LLDPE, MDPE, EVA, PVC, PP and other cable insulating materials and sheath materials; PE peroxide and silane cross-linked cable materials; radiation cross-linked cable materials
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2-8
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Special materials
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EVA hot melt adhesive, polyurethane, fluorine rubber, fluorine plastic, PP cigarette filter material, TPR sole material+
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Reactive extrusion
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Polyamide polycondensation, polyamide melt polymerization, polyurethane addition polymerization, polycarbonate polycondensation reaction, etc.
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Exhaust devolatilization
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Chlorinated polypropylene, super absorbent resin, chlorosulfonated polyethylene
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Powder coating
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Polyester, epoxy, acrylate, polyurethane, acrylic
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1. Technical parameters of SHJ20 twin screw extruder
Twin screw length to diameter ratio 36:1---60:1
Twin screw motor power 4KW AC
2. Unit configuration
A, SHJ 20 twin-screw mixing extruder unit
a, gear reducer
1) Reduction ratio: 2.5:1
2) Output shaft speed: MAX600RPM
3) Input shaft speed: MAX1500RPM
4) The deceleration and torque distribution parts of the main engine transmission box are integrated, and the parallel three-axis design is adopted with a compact structure. Imported bearings are used for deceleration, torque distribution and radial bearings of the two output shafts.
b. Lubricating oil cooling system
1) Oil pump motor 0.55KW
2) Lubricant model: Shanghai Haipai 6402 medium-duty gear oil, model 85W/90GL-4
3) Brand: Xi'an Oil Pump Factory
4) Condenser model: SL-303
5) Lubricating oil pump model: CB-B6
c. Main motor
1) Host motor: 4KW (AC motor)
2) Motor speed (MAX): 1500RPM
d. Screw
1) Screw diameter: Φ21.7mm
2) L/D=40:1
3) The screw is a building block type
4) The screw mandrel is made of 40CrNiMoA, and the threaded element and the mandrel are involute connection, which has high strength, large load-bearing load, and convenient disassembly and assembly.
5) The screw element is made of high-quality high-speed tool steel W6MO5Cr4V2, which is heat treated by vacuum quenching at high temperature.
6) The overall hardness is HRC62~64.
e. Barrel
1) The barrel is made of 45 steel as the base, the eight-shaped hole is made of double alloy bushings, the wear-resistant alloy a-101 (Fe-Cr-Ni-B+Carbide) hardness is HRC60-64, and the barrel length is L=120mm/section.
2) The first section of the cylinder is a feeding cylinder, the sixth section is an exhaust cylinder, the seventh section is an extrusion cylinder, and the remaining cylinders are closed cylinders.
3) Soft water circulation system
3.1 Soft water cooling is used in the barrel
3.2 The soft water tank is separated from the body for easy cleaning and maintenance
3.3 Solenoid valve imported from Italy
3.4 The water pipe is chrome-plated with red copper pipe
3.5 Cooling form: water cooling
3.6 Cooling pump: 120W
3.7 Water tank capacity: 30L
f. Heating system
Temperature control section Barrel section Heating plate type
The first stage feed
Section 1 Section 2 Cast copper
Second zone, third section, cast copper
Zone Three, Section Four, Cast Aluminum
4th zone 5th stage cast aluminum
5th zone 6th section cast aluminum
Sixth zone, seventh stage, cast aluminum
Use the melting temperature thermocouple to measure the melting temperature of the material, and use the pressure sensor to measure the material pressure.
h. Vacuum degassing device
1) SK-0.15 water ring vacuum pump, Zibo Lianyi Vacuum Pump Factory
2) Drive motor: 0.75KW AC
3) Maximum air intake: 9m³/h
4) Working fluid volume: 0.2 m³/h
j. Electrical control system
1) 3X380V, AC 50Hz.
2) The main electrical control components are Siemens products
3) The control button is a product of French Schneider
4) The twin-screw motor is an AC motor with a power of 4KW, and the twin-screw main engine speed regulator is an imported frequency converter
5) The feeder speed regulator is imported frequency converter
6) The temperature control instrument adopts the product of Japanese RKC company, dual-channel intelligent type, one temperature control for each zone
7) The pressure gauge range is 0~25Mpa
8) The solenoid valve adopts CEME5510 imported from Italy
9) The heating is controlled by a temperature control meter through a solid state relay
10) Electrical control cabinet control includes: temperature control system; drive system; interlocking and interlocking control system
k. Interlocking control system
1) The oil lubrication system is interlocked with the main engine, that is, the main engine can be started after the oil pump is started.
2) The feeding system is interlocked with the host, that is, the feeding machine can be started after the host is started.
3) The pressure system is interlocked with the main machine, that is, when the pressure is over, the main machine and the feeding will stop working.
4) The current is interlocked with the host, that is, when the current is over, the host and feeding will stop working.
B. A set of auxiliary machines
1) 1 meter stainless steel sink 1 piece
2) LQ-20 type pelletizer 1 set
3) 0.37KW blow dryer 1 set
C. Spare parts
1) Three heaters
2) Three pieces each of the input and output oil seals of the transmission box
3) Twin screw screw element 300mm
4) Two pairs of asbestos gloves
3. Training and service
1) Provide on-site installation guidance
2) On-site commissioning and testing of equipment
3) Responsible for on-site operation training and maintenance training for Party A’s personnel
4) Provide one year free warranty for equipment failure caused by design or manufacturing quality, and long-term guarantee of the supply of spare parts.
5) Provide long-term technical consulting services
6) Outside the warranty period, after the supplier receives the buyer’s equipment failure notification, clear solutions will be given within 6 hours. If the supplier is required to dispatch personnel, the supplier shall be responsible for repairs on site within 10 hours (excluding midway travel time) ).
4. Installation and commissioning: After the unit arrives, the buyer will install the unit according to the technical documents provided by the supplier, and the supplier will send commissioning personnel to the equipment installation site of the demander to guide the commissioning and installation and commissioning. The buyer shall have the conditions for trial run. After the unit is operating normally, the handover will be done, and the purchaser shall provide the user acceptance report to the supplier. The materials required for the test run shall be provided by the purchaser, and the process conditions for the test run shall be mainly determined by the purchaser.
Five, a copy of technical information
