What to do when there is no vacuum in the production of PE three-layer co-extrusion pipe equipment

2022-09-21

Ningbo Fangli Technology Co., Ltd. is a mechanical equipment manufacturer with nearly 30 years’ experiences of plastic pipe extrusion equipment, new environmental protection and new materials equipment. Since its establishment Fangli has been developed based on user’s demands. Through continuous improvement, independent R&D on the core technology and digestion & absorption of advanced technology and other means, we have developed PVC pipe extrusion line, PP-R pipe extrusion line, PE water supply / gas pipe extrusion line, which was recommended by the Chinese Ministry of Construction to replace imported products. We have gained the title of “First-class Brand in Zhejiang Province”.

 

 

PE three-layer co-extrusion pipe equipment production line is a production and manufacturing line of plastic pipes using vacuum sizing technology. However, if the technology is not mature, the processing is rough, and the process is not refined, some unexpected failures may occur, such as no vacuum. But please do not panic, because it can be solved:


When the PE three-layer co-extrusion pipe equipment is used to produce plastic pipes, some three-layer co-extrusion plastic pipe production lines will have internal jitter rings and no vacuum. When the jitter rings appear inside the pipes, the customer can adjust the water outlet of the sizing sleeve accordingly to make the water outlet even; Adjust the vacuum degree of the second chamber to make the vacuum degree of the rear chamber slightly higher than that of the front chamber; Check whether the vacuum sealing gasket is too tight; Check whether the tractor shakes; Check whether the discharge of the host is even. When these problems are solved, the jitter phenomenon will disappear automatically.

 

When there is no vacuum in the production line of PE three-layer co-extrusion pipe equipment, check whether the water inlet of the vacuum pump is blocked. If it is blocked, use a thin needle to dredge it; Check whether the vacuum pump works normally; Check whether the vacuum pipeline leaks; Check whether the small hole in the middle of the compression screw of the core mold is blocked. If it is blocked, clear it with a thin iron wire. These are not major problems, as long as they are properly handled, it doesn't matter.

 

If you need more information, Ningbo Fangli Technology Co., Ltd. welcomes you to contact for a detailed inquiry, we will provide you with professional technical guidance or equipment procurement suggestions.

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