SHJ-20 Twin-Screw Mixing Extruder Parameters

SHJ-20 Twin-Screw Mixing Extruder Parameters

1.Output: 1~5 KG/hour

2.Screw Diameter: Φ21.7mm

3.Length-to-Diameter Ratio: L/D=40:1

4.Main Motor Power: 4KW (Variable Frequency Speed Control)

5.Main Feeder: 0.75KW (Variable Frequency Speed Control)

6.Screw Configuration: Modular

7.Overall Hardness: HRC65~75

8.Screw Mandrel: Made of 40CrNiMoA, involute connection between threaded elements and mandrel, high strength, high load capacity, easy assembly and disassembly.

9.Screw Elements: High-quality high-speed tool steel W6MO5Cr4V2, high-temperature vacuum quenching heat treatment

10.Barrel Material: Outer sleeve 45 steel, inner lined with bimetallic bushing, wear-resistant alloy a-101 (Fe-Cr-Ni-B+Carbide)

11.Screw Length: L=120mm/section; total 7 sections

12.Vent Holes: Zone 1 main feeder (open); Zone 2 auxiliary feeder (open); Zone 6 vent (open), others are closed

13.Vacuum Extraction: Water ring vacuum degassing

14.Pressure Measurement: Pressure sensor measures material pressure, range 0~25Mpa

15.Heating Zones: 7 zones (electric heating zones 2~6; die zone)

16.Temperature Control Accuracy: +2℃ (Dual-channel intelligent temperature control instrument, independent temperature control display for each zone (RKC))

17.Heating Power: Approximately 10KW

18.Screw Speed: 0~500rpm

19.Transmission Ratio: 1:2.5

20.Gearbox: Integrated transmission box with reduction and torque distribution, parallel three-shaft design, compact structure. Reduction, torque distribution, and radial bearings of both output shafts use NSK bearings.

21.Cooling System: Soft water circulation cooling

22.Screen Changing Method: Hinged quick-open type

23.Motor Brand: Wannan

24.Inverter Brand: Japanese Miyakawa

25.Electrical Control: Integrated control box with machine (Chint... main electrical components optional brands)

II. Section:

1.Cooling Water Tank: Stainless steel 1.5-meter water tank with inlet and outlet (cooling strips)

2.Air Knife: 1.5KW (Removes excess moisture)

3.Pelletizer: 1.5KW (Speed adjustable, output strands: 2)

4.Mixer: High-speed mixer (optional)

III: SHJ-20 Twin-Screw Mixing Extruder Installation Conditions:

Power Supply: Three-phase, 380V

Installation Area: 1.5m*5m level ground

Total Power: 15KW