Double screw plastic extruder screen changer

Plastic granulation non-stop hydraulic screen changer

The plastic extruder screen changer is widely used in materials such as plates, sheets, films, foaming, granulation, polymerization lines, blending, sols, adhesives, etc.

Working principle of extruder screen changer

When the double column screen changer of the extruder is working, both filter screens work simultaneously. When the screen needs to be changed, the hydraulic station can be activated to perform the screen change action. When replacing the filter screen, one screen works, the other screen is replaced, and the two screens are alternately changed. Through the feeding and exhaust devices, the air in the flow channel is discharged and dried to achieve the production requirements of non-stop screen change, no material leakage, uninterrupted material flow, small material pressure fluctuation, small impact on production, and good continuity.

Structure of plastic extrusion screen changer

1. Dual channels, dual workstations, dual networks working simultaneously;

2. Alternate replacement of dual networks to ensure the normal production process;

3. The curved filter design effectively increases the filtering area;

4. Rigid sealing structure, no leakage;

5. Progressive feeding and exhaust structure, with small pressure fluctuations during the mesh changing process, ensuring continuous and stable product production;

6. Optimize the design of the internal flow channel, without dead corners or stagnant flow;

7. It can achieve automatic alarm and control, ensuring the safe and stable operation of the system.

Parameters of continuous non-stop screen changer

1. Working temperature: ≤ 350 ℃;

2. Working pressure: ≤ 50MPa;

3. Pressure difference: ≤ 20MPa;

4. Applicable melt viscosity: 100~30000Pa. s;

5. Heating method: electric heating/heating medium heating.

Configuration of hydraulic screen changer for plastic extrusion

1. High corrosion conditions - optional high corrosion resistant material scheme;

2. Mobile installation trolley, integrated with hydraulic station and electrical control system, convenient for on-site maintenance;

3. Optional automatic control system, integrated with PLC and HMI control system, easy to operate;

4. Integrating the connection and control of components such as melt gear pumps, mixers, start-up valves, and underwater cutting die heads, a complete solution can be provided.

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