ZL-3020B Twin-Screw Extrusion Granulator

· Equipment Overview:

Product Introduction	During the polymer extrusion process, the twin-screw granulator is a process in which the conveyed solid melt polymer is sheared, mixed and extruded at a certain temperature. The physical state changes of polymers and materials during the extrusion process, the process of mixing morphology and structural changes, and the relationship between the final mixture and properties
Working Principle	The material passes through the feeding port, and under the action of the rotating screw, it is kneaded into a ball and rolls forward along the screw groove. Due to the shearing, compression and stirring of the screw, the material is further mixed and plasticized, and the temperature and pressure gradually increase. High, presents a viscous flow state, and passes through the machine head at a certain pressure and temperature, and finally obtains the desired shape of the product.
Features	1. Feeding unit adopts ABB servo motor & controller with anti‑bridging stirring feeding. Main motor is ABB type with ABB variable‑frequency drive for stable operation. 2. Shaft material: 40CrNiMoA. Modular barrel‑screw construction. Screw elements are made of premium high‑speed tool steel W6Mo5Cr4V2. Barrel is 38CrMoAlA nitrided steel with nitriding & anti‑rust surface treatment. 3. PLC color touch screen, CHINT electrical components.
Scope Of Application	It is suitable for mixing and processing experiments of engineering plastics, modified plastics, waste plastics, and color masterbatches. It has the functions of homogenization, plasticizing and coloring, filling modification, etc. ◆Mixing, kneading, extrusion and granulation of general plastics, engineering plastics, elastomers and other materials ◆Blending Modification of Composite Materials ◆Polymer Filled Reinforcement Modification

 

· Product Detailed Parameters：

a) Mainframe model: ZL-20 twin-screw extruder

b) The aspect ratio of the main unit: 40:1

c) Main motor power: 4kw

d) Main screw speed: 60 to 600 RPM

 

(1) 1 Set Of Feeder

◆ Feeding motor: Swiss ABB servo motor

◆ Main feeding motor power: 0.4kW

◆ Planetary reduction ratio: 35:1

◆ Direct connection design between motor and reducer; horizontal agitator equipped inside the feeding body to achieve stable and uniform feeding without bridging.

◆ Both feeding body and hopper adopt streamlined design for smooth material discharge and easy cleaning.

 

(2) 1 Set Of Gear Reducer

◆Reduction ratio: 2.5:1

◆Max. output shaft speed: 400RPM

◆Max. input shaft speed: 1000RPM

◆The transmission box integrates speed reduction and torque distribution.

◆The reduction and torque‑distribution sections of the main gearbox are integrated as one unit with a parallel three‑shaft design for compact structure. NSK bearings are applied for reduction, torque distribution and radial bearings of the two output shafts.

 

(3) A set of Main Motor

◆Mainframe motor: 4KW (AC motor)

◆AC motor Max. motor speed: 1450RPM

◆Brand: ABB

 

(4)A set of Screw

◆Screw diameter: Φ21.7mm

◆L/D ratio: 40:1

◆Segmental modular screw design

◆Screw shaft material: 40CrNiMoA; screw elements connect with shaft via involute spline, featuring high strength, heavy load capacity and easy assembly & disassembly

◆The screw elements adopt premium high‑speed tool steel W6Mo5Cr4V2 with high‑temperature vacuum quenching heat treatment

◆Overall hardness: HRC62~64

 

(5)A set of Barrel

◆Barrel material: 38CrMoAlA nitriding steel with nitriding treatment and anti-rust surface treatment.

◆1st barrel: feeding barrel ;6th barrel: venting barrel ;Last barrel: extrusion barrel ;Other barrels: closed barrels

 

(6)Heating System

◆Feeding Zone (1st barrel section): No heating

◆Zone 1 (2nd barrel section): Cast aluminum heater Zone 2 (3rd barrel section): Cast aluminum heater

◆Zone 3 (4th barrel section): Cast aluminum heater Zone 4 (5th barrel section): Cast aluminum heater

◆Zone 5 (6th barrel section): Cast aluminum heater

 

(7)A set of Vacuum Degassing

◆Model CF-0.15 water ring vacuum pump, manufactured by Zibo Lianyi Vacuum Pump Factory

◆Drive motor: 0.18kW AC motor

◆Pumping speed: 5.4m³/h

 

(8)A set of Tap Water Cooling System

◆Barrel cooled by tap water

◆Equipped with imported solenoid valves

◆Custom stainless steel high-temperature water pipes adopted

 

(9) A set of Integrated Pelletizing Auxiliary Unit for Soft & Hard Material

◆ A set of Integrated Pelletizer

 

(10) A set of Interlock Control System

◆ The feeding system is interlocked with main unit; the feeder can only start after the main unit is activated.

◆ The pressure system is interlocked with main unit; both main unit and feeder stop automatically upon overpressure.

◆ The current is interlocked with main unit; both main unit and feeder stop automatically upon overcurrent.

 

(11) A set of Electrical Control System (PLC + Color Touch Screen, Total Installed Power ~15kW)

◆ Power supply: 3-phase 380V AC, 50Hz

◆ Low-voltage control components: CHNT brand.

 

◆ Twin-screw motor: 4kW AC motor; ABB frequency converter for main speed regulation

◆ Feeder speed controller: ABB servo controller.

◆ Pressure gauge range: 0~25MPa

◆ Imported solenoid valves equipped

◆ Heating controlled by temperature controller via solid-state relays with high-temperature resistant wires

◆ Electric control cabinet covers temperature control system, drive system and interlock control system

 

(12)Spare Parts

◆ Input & output oil seals for gearbox: 1 set

◆ Twin-screw kneading elements: ~200mm

◆ Tool kit supplied with machine: 1 set

 

(13)Utility Requirements

Water, power, gas and workshop utilities shall be prepared by the buyer. Basic requirements as below:

◆ Power supply:

– 3-phase 5-wire system

– Voltage: 380V ±10%

– Frequency: 50Hz ±2%

If on-site power fails to meet standards, user shall equip voltage stabilizer.

◆ Cooling water:

– Inlet operating pressure: 0.4MPa (gauge)

– Inlet temperature: ≤30℃

– Water consumption: 3–10t/h (depends on process and load)

 

Ambient conditions:

– Ambient temperature: 10–40℃

– Max. relative humidity: 80%, no condensation

– No conductive dust, corrosive or hazardous gas around the unit (especially control cabinet)

 

· Configuration List

No	Name	Specification	Qty
1	Twin-screw anti-bridge feeder	CF-20	1set
2	Twin-screw extruder	CF-20	1set
3	Vacuum forced exhaust system	1.5L vacuum pump 5L vacuum tank	1set
4	Aluminum casting heating system		1set
5	Soft water cooling system		1set
6	Water-cooling system	1.2-meter 304 stainless steel sink	1set
7	Pelletizer	0.4kw*2	1set
8	Electrical & Instrument Control System	3*380V,50HZ	1set
9	Control System	Plc-controlled color touch screen	1set
10	Spare Parts		1set
11	Technical Documentation		1set