Brief Introduction of SHJ-20 Twin Screw Extruder


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Nanjing Hanyi Machinery and Electronics Co., Ltd. focuses on the R & D and production of parallel co-rotating twin-screw extruders and underwater pelletizers. More than 20 years of production experience, stable and reliable equipment quality, is your trusted partner.

SHJ-20Details of twin-screw mixing and extrusion unit configuration(For reference only)

SHJ20List of Machine Typical Material Operation Capability (Reference Value)

 

Process

Typical Material List

Working capacity kg/h (reference value)

blending modification

PE、PP、PS SBS;PA EPDM;PP NBR;EVA 硅橡胶等

2~10

PE、PA、PC、CPE ABS(合金);ABS TPU;PBT PET;PP PE等

2~10

filling modification

PE, PP, EVA and other calcium carbonate, talc, titanium dioxide; ABS, PC;PS and other aluminum hydroxide, magnesium hydroxide, antimony oxide

2~10

PP, PA, ABS iron powder, sulfur powder, ceramic powder

3~15

Functional Masterbatch

PP, PA, ABS, PBT and other flame retardants and other additives: combustion masterbatch

2~10

PE, PP, PS and other starch: degradable masterbatch

2~10

PE anti-fog drop agent, stabilizer: double-proof masterbatch

2~10

PE, EVA = ABS and other carbon black: black masterbatch

2~8

Masterbatch

PE, PP, ABS, AS, PA, EVA, PET pigments and additives

2~10

Glass fiber, carbon fiber reinforced

PP, PBT, ABS, AS, PA, PC, POM, PPS, PET and other long fiber, staple fiber, carbon fiber, whisker, etc.

1~8

All kinds of cable materials

HDPE, LDPE, LLDPE, MDPE, EVA, PVC, PP and other cable insulation materials, sheath materials; PE peroxide, silane crosslinking cable material; Radiation crosslinking cable material

2~8

Special Materials

EVA hot melt adhesive, polyurethane, fluorine rubber, fluorine plastic, PP cigarette filter material, TPR sole material

2~10

reactive extrusion

Polyamide polycondensation, polyacyl melt polymerization, polyurethane addition polymerization, polycarbonate polycondensation reaction, etc.

2~10

Exhaust devolatilization

Chlorinated polypropylene, super absorbent resin, chlorosulfonated polyethylene

2~10

powder coating

Polyester, epoxy, acrylic, polyurethane, acrylic

2~10

 

Technical parameters of 1. SHJ20 twin screw extruder

Twin screw length diameter ratio 36:1~60:1

Twin screw motor power 4kW AC motor

 

2. unit configuration

A, SHJ 20 twin-screw mixing extruder unit

a. Gear reduction box

1) Reduction ratio: 2.5:1

2) Output shaft speed: Max. 600rpm

3) Input shaft speed: Max. 1500rpm

4) The main engine transmission box deceleration and torque distribution parts are integrated, using parallel three-axis design, compact structure. Imported bearings are used for deceleration, torque distribution and radial bearings of two output shafts.

B. Lubricating oil cooling system

1) Oil pump motor 0.55kW

2) Lubricating oil type: Great Wall brand No. 320 medium load gear oil

3) Brand: Nanjing Oil Pump Factory

4) Condenser model: SL-303

5) Lubricating oil pump model: KZY-01

c. Main motor

1) Main motor: 4kW (AC motor)

2) Motor speed (Max.):1500rpm

d. Screw

1) Screw diameter: Æ21.7mm

2)L/D=40:1

3) The screw is of building block type

4) The screw mandrel is made of 40CrNiMoA material, and the threaded element and mandrel are involute connection, which has high strength, large load bearing and convenient disassembly and assembly.

5) screw element material for high-quality high-speed tool steel W6MO5Cr4V2, high temperature vacuum quenching heat treatment.

6) the overall hardness of HRC62 ~ 64.

e. Barrel

1) The material of the barrel is 45 steel as the matrix, the eight-shaped hole is made of double alloy bushing, the hardness of wear-resistant alloy α-101(Fe-Cr-Ni-B Carbide) is HRC60 ~ 64, and the barrel length L = 120mm/section.

2) The first cylinder is the feeding cylinder, the sixth cylinder is the exhaust cylinder, the seventh cylinder is the extrusion cylinder, and the remaining cylinders are closed cylinders.

3) Soft water circulation system

3.1 barrel is cooled with soft water

The 3.2 soft water tank is separated from the body for easy cleaning and maintenance

3.3 the United States imported solenoid valve

3.4 water pipe with copper tube chrome plating treatment

3.5 cooling form: water cooling

3.6 cooling pump: 0.55kW

3.7 water tank capacity: 30L

F, heating system

Heating sheet type of cylinder section in temperature control section

First stage feed (unheated)

The second section of the first zone cast copper

The third section of the second area cast copper

Third zone fourth section cast aluminum

The fifth section of the four-zone cast aluminum

Zone 5, Section 6, Cast Aluminum

Zone 6, Section 7, Cast Aluminum

The melting temperature thermocouple is used to measure the melting temperature of the material, and the pressure sensor is used to measure the pressure of the material.

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 suction capacity: 9 m/h

4) working fluid volume: 0.2 m/h

j. Electrical control system

1)3-phase 380V, AC 50Hz

2) The main electrical control components are Siemens products

3) Control buttons for French Schneider products

4) The twin-screw motor is an AC motor with a power of 4kW, and the twin-screw host speed regulation device is an imported frequency conversion speed regulator

5) The speed regulating device of the feeding machine is imported frequency conversion speed regulator

6) The temperature control instrument adopts the product of Japan RKC company, dual-channel intelligent type, and one temperature control for each zone

7) The measuring range of pressure gauge is 0 ~ 25MPa

8) solenoid valve using the United States imported VMI solenoid valve

9) 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 control system

k. Interlock control system

1) The oil lubrication system is interlocked with the main engine, that is, the main engine can only be started after the oil pump is started.

2) The feeding system is interlocked with the host, that is, the feeding machine can only be started after the host is started.

3) The pressure system is interlocked with the host, that is, when the pressure is over, the host and the feeding stop working.

4) The current is interlocked with the host, that is, when the current is over-current, the host and the feeding stop working.

B. One set of auxiliary pelletizing machine

1)1 meter stainless steel sink 1 piece

2)LQ-60 pelletizer 1 set

3)0.37kW blow dryer 1 set

C. Spare parts

1) Three pairs of heater

2) The input and output oil seals of the transmission box each have three pieces

3) Twin-screw screw element 300mm

4) A pair of asbestos gloves

 

3. Training and Services

1) Provide on-site installation guidance

2) On-site commissioning and commissioning of equipment

3) Be responsible for on-site operation training and maintenance training for Party A's personnel

4) Provide free warranty for one year for equipment failure caused by design or manufacturing quality, and guarantee the supply of spare parts for a long time.

5) Long-term provision of technical advisory services

6) Inside and outside the warranty period, the supplier shall give clear solutions within 6 hours after receiving the notice of equipment failure from the demander. If the supplier needs to send personnel, it shall be responsible for maintenance on site within 72 hours.

 

4. installation and debugging: after the unit arrives, the buyer will install the unit in place according to the technical documents provided by the supplier, and the supplier will send debugging personnel to the equipment installation site of the buyer to guide the test run and installation and debugging. The Buyer shall have the commissioning conditions. After the normal operation of the unit, it will be handed over, and the buyer shall provide the user acceptance report to the supplier. The materials required for commissioning shall be provided by the demander, and the process conditions for commissioning shall be mainly based on the demander, which shall be agreed upon by both parties.

 

One copy of 5. technical data