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HKY75 Co-Rotating Parallel Twin Screw Extruder（L/D=44）

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HKY75 Co-Rotating Parallel Twin Screw Extruder（L/D=44）

Introduction

 HKY75 Co-Rotating Parallel Twin Screw Extruder Machine Group（L/D=44）

Materials to Be Produced: PET/PP

Capacity: 500~550kg/Hr depends on the formulation and processing tech.

VOLTAGE: 380V – FREQUENCY: 50Hz

 

 

  Configuration of Equipment

1.Feeding System：

1.1 Twin screw volumetric main feeder, Power of AC motor 1.5kw, with japan Nidec frequency inverter.

2. Main Extruder Model HKY75B (Twin Screw Extruder):

2.1 Main extruder is equipped with 1 set 160kw AC motor, max output rotating speed 600rpm, and japan Nidec frequency inverter for the speed regulation system;

2.2 New generation twin screw speed reduction distribution gearbox 1 set;

2.3 One Nylon Pin Coupling connector, to transfer the main power to the gearbox;

2.4 One set of processing part: L/D ratio = 44:1, the barrels is bimetal integral alloy sleevet; screw element: W6Mo5Cr4V2, through vacuum quenching, hardness HRC60-62;

2.5 One set of barrels temperature control system: two cooling water pipes. Cooling water pipes and joint are all of stainless steel; cooling barrels by soft water circulation, incl. heat exchanger, 0.75KW water pump, stainless steel external water tank;

2.6 One set of vacuum system incl. external stainless steel vacuum condensation pot and water ring vacuum pump, 1.5kw.

3. One set of bracing extrusion head, incl. cast-copper heater and die.

4. One suit of water cooling pelletizing auxiliary equipment.

5. One set of electrical control system, electrical instruments separates with the main extruder.

 

  Delivery

45 days after receive the down payment.

 

  Payment Terms

The contract become effective after 30% down payment and the 70% balance must be pay off before shipping and after testing.

Technical Parameters

  HKY75 Co-Rotating Parallel Twin Screw Extruder

1.Main Motor：

1.1 Manufactured by China;

1.2 AC motor, power 160KW,rpm 1500r/min;

1.3 Cooling mode: Fan cooling; Environment temperature≦40℃;Install Height≦1000m;
 


2.Gearbox：

2.1 New structure gearbox, high torque, high speed, material of gearbox is QT450;

2.2 The gear accuracy is grade 6(Chinese standard), which is a high precision. High speed heavyduty hard-tooth-surface. The materials are 20CrNi2MoA and 20CrMnMo,carburizing heat treatment of gears HRC60-62;

2.3 Involute gear teeth couplings between the output shafts and screw shafts;

2.4 Use imported brand bearings. Integrated thrust bearing assembly is Name Luoyang.

2.5 The bearings and gears are forced to adopt the immersion oil-lubrication system. Oil pump motor power 0.75kW;

2.6 Oil seal of the body: Taiwan Hansheng brand;

2.7 Tubular condenser, cooling area of 2.6 square meters;
 


3.Screw Elements：

3.1 Kneading blocks are made by CNC machining center, same size for different batches, with good interchangeability and self-cleaning quality;

3.2 Involute gear teeth connection to ensure power flow between the screw shaft and screw elements;

3.3 Screw element diameter:71mm; L/D=44; numbers of barrels:11

3.4 Screw rotating speed: 600r/min.

3.5 Material of screw element: W6Mo5Cr4V2, Hardness: HRC60-62.
 


4.Barrel：

4.1 The barrels are made by CNC machining center, the aligning pin and inner hole are completed by machining center in one time. Inner hole is grade 6, which is a high precision. After assembly, the concentricity error is 0.05mm, thus greatly enhance the self-cleaning of screw and reduce energy consumption;

4.2 The barrels are equipped with stainless steel integral shielding which are secure, good-looking and power saving;

4.3 The barrels is bimetal integral alloy sleevet：HRC60-62;

4.4 The 2nd and 3rd barrels adopt cast-copper heaters and the rest are cast-aluminum heaters. All barrels use the soft water cooling.

4.5 The first (1) barrel is feed barrel, the sixth (6) is nature exhaust, the tenth(10) has a vacuum exhaust mouth and the eleventh(11) is extrusion barrel.
 

 

5.Barrel Temperature Control System：

5.1 Heating and cooling is controlled by temperature control meter through the solid-state relay or solenoid valve, thus form a closed-loop system to control the barrel temperature. The temperature control accuracy is ±2℃ ;water flow control : by use of stop valve;

5.2 Two cooling water pipes. All the cooling pipes, joints stainless steel; Soft water circulation system including heat exchangers, 0.75kw water pump, water tank body: stainless steel

 

6.Vacuum System：

6.1 External stainless steel vacuum condensation pot;

6.2 Water ring vacuum pump, motor power 1.5kw;

 


  Auxiliary Machinery

1.Electrically Heated：

With interchangeable die-plate connection points for melts and temp, as well as melt pressure gauge.


2. Water Cooling Tank：

2.1 Body material: stainless steel; Length: 5 m;

2.2 With wheels for moving conveniently;

2.3 Strand guider material: nylon;4 set
 


3. Air Knife:

3.1 Fan power: 1.5kw;

3.2 Structure: two extracting ports;

3.3 Strand guide material: nylon;
 


4. Strand Pelletizer:

4.1 Model: LQ-500;

4.2 Working width: app. 200mm

4.3 Drive power:7.5kw
 

 


  Electrical Instruments Control System

 

1. Control instruments adopt the following brands：

1.1 Temperature control meter: Omron;

1.2 Main Frequency Inverter: Nidec;

1.3 Feeder Frequency Inverter:Nidec;

1.4 Main Control Switch: CHNT;

1.5 Low-voltage electric elements: CHNT;

1.6 Cooling electromagnetic valve: VMI;

1.7 AC contactor: CHNT.

2. General interlock and alarming:

2.1 The interlock protect of oil pump and main extruder;

2.2 Over-electric current, over-pressure alarming, emergency stop protection;

2.3 Main extruder fault alarming, emergency stop protection;

3. General illuminated button indicate switches:

3.1 Emergency stop switches;

3.2 Alarming reset;

3.3 Main motor start;

3.4 Main motor stop;

3.5 Feeder start;

3.6 Feeder stop

3.7 Oil pump start;

3.8 Oil pump stop;

3.9 Water pump start;

3.10 Water pump stop;

3.11 Vacuum pump start;

3.12 Vacuum pump stop;

4. LED Indicator:

4.1 Power LED;

4.2 Main extruder fault LED indicator;

4.3 Main extruder over-electric current LED indicator;

4.4 Main extruder over-pressure LED indicator.

5. Digital display and controller:

5.1 Temperature control of all sections;

5.2 Main motor electric current;

5.3 Rotating speed of twin screw.

5.4 Rotating speed of feeding

5.5 Feeding electric current

5.6 Melt temperature

5.7 Melt pressure

The Above Configuration Power Voltage Only Confine To Standard Power Supply 380v 50hz.

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