Four-way valve

Abstract

The invention discloses a four-way valve. The four-way valve comprises a valve shell, a channel assembly, a valve element assembly, supporting plates and a driving component, wherein two opposite base holes are formed in the valve shell in the set direction, supporting assemblies are installed at the outer ends of the base holes, and seat holes collinear with the axes of the base holes are formed in the supporting assemblies; the channel assembly is installed in the valve shell and used for constructing four channels, and the channels are annularly arranged with the axis of the base holes as the axis; the valve element assembly comprises a rectangular valve plate and a valve element shaft, the valve element shaft is vertically installed on the two opposite edges of the rectangular valve plate, the two edges are marked as end edges, the other two edges are marked as sealing edges, and the valve element shaft is located in the middle of the end edges and rotationally installed on the seat holes; the supporting plates are circular plates, are in one-to-one correspondence with end plates and are fixedly connected with the end plates, and the supporting plates are in movable sealing fit with the base holes; and the driving component is connected to a shaft head formed by the valve element shaft penetrating out of the seat holes. The four-way valve based on the invention is not likely to be stuck and intermingled.

Description

technical field [0001] The invention relates to a four-way valve arranged on a cotton conveying pipeline. Background technique [0002] Wind conveying is the conventional method of cotton conveying. In the cotton processing process, if a four-way valve can be configured between two skin cleaners, one of the skin cleaners can be selected for processing through the reversing of the four-way valve. , and another skin cleaner for standby. The four-way valve can realize the free choice between two skin cleaners, so the four-way valve is a very important process equipment in the cotton processing process. [0003] The traditional four-way valve used in the current cotton processing technology often has stuck or blocked flowers due to structural reasons, and it is easy to cause agglomerated cotton to enter the skin cleaning machine, causing equipment blockage and component damage. During the processing season The faults caused by the problem of the four-way valve are very frequen...

AI Technical Summary

Problems solved by technology

[0003] The traditional four-way valve used in the current cotton processing technology often has stuck or blocked flowers due to structural reasons, and it is easy to cause agglomerated cotton to enter the skin cleaning machine, causing equipment blockage and component damage. During the processing season The faults caused by the problem of the four-way valve are very frequent, which seriously affects the normal processing operation and brings unnecessary losses to the processing plant. During the processing process, the four-way valve needs to be manually cleaned regularly, which increases the workload of the workers.

[0004] Analysis of the reasons for the problems in the structure of the traditional four-way valve: the spool of the four-way valve has a long axial dimension, and the length is usually more than 2000mm. It is difficult to guarantee the straightness during production, and when the length of the spool is relatively long, the The only support at both ends to ensure the stiffness of the spool is the spool shaft, which is offset in the middle of both ends of the spool, and has little influence on the rigidity of the spool; furthermore, the deformation of the spool under stress conditions , it is easy to cause cross air in the two channels separated by the valve core, thus causing jamming; in view of the fact that the rigidity of the valve core is not easy to guarantee, the deformation of the sealing rubber on the valve core is uncontrollable, which is easy to cause aging damage to the sealing rubber, which further aggravates the cross air In addition, the general structure of the spool is a rectangular plate, and a good seal cannot be formed between the two ends of its axial direction (spool axis) and the four-way valve casing, even if the sealing rubber is installed at both ends, It still cannot form a good seal, and it is easy to get stuck in the corner

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