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Gravimetric Control System

Meter weight is the product weight of per meter. The weight of the product can be calculated according to the size of the product and the density of the material. The constant weight per meter determines the quality of the product to a great extent. The sealion Gravimetric control system is installed at the top of the feed port of the extruder. It can control the pipe meter weigh by adopting PID closed loop control. In any cases, any time can control engine speed, traction speed and feeding amount of pipe production line.


Plastic pipes, films, cables and etc. extrusion produce process and quality control

Sealion Gravimetric Control System Main Function

● Shorten start-up time, Solve the problem that can not be adjusted in start-up and during production.
● Solve the problem of meter weight deviation and waste material . Can save2%-5% raw material.
● Solve the problem of pipe broken pipe joint, Control pipe meter weight and extrusion output.
● Solve the problem of uneven thickness of pipes caused by changing density and proportion of raw materials
● Stabilize production process, control product quality.
● Solve the problem of the waste pipe caused by the blockage of the filter net.
● Statistics and save production data.


System Workflow

The Gravimetric control system contains a intelligent scale, The function of the scale is that the small hopper opens and closes the valve continuously to cycle control the material. Make sure that each batch of material is free falling and keep the same pressure.The action of opening and closing valves are controlled by microcomputer which is based on the following procedures strictly;
1st step: The material is filling to the hopper and the valve will be closed when reach to 80%,
2nd step: The material in the hopper will fall down and feed to the main screw.
3rd step: When the material is lower to 20%, the valve will be opened, reload material and proceed to next cycle.

Technical Structure