A plunger-type screen changer driven by a hydraulic cylinder and capable of online reverse flushing

Abstract

The invention relates to a plunger-type screen changer driven by a hydraulic cylinder and capable of online reverse flushing, which belongs to the technical field of chemical fiber equipment. In the invention, two sets of filter mechanisms are arranged on the outer circumference of the screen-changing plunger and two sets of filter mechanisms are arranged on the inner wall of the screen-changing channel. The liquid outlet tank and the liquid outlet channel cooperate, and the position of the screen changing plunger is changed in the screen changing channel of the screen changing valve body by means of the hydraulic cylinder, so as to realize the filtration of the original liquid, the back flushing of the filter screen assembly and the replacement of the filter screen assembly , There is no need to stop the machine in each state, and the online reverse flushing and replacement are realized, which greatly improves the continuity of the raw liquid filtration work and significantly improves the work efficiency.

Description

technical field [0001] The invention belongs to the technical field of chemical fiber equipment, and in particular relates to a plunger-type screen changer driven by a hydraulic oil cylinder and capable of online reverse flushing. Background technique [0002] In my country's chemical fiber production in recent decades, the raw liquid filtration of chemical fiber production has always been a relatively backward form of equipment. At present, most of the filter equipment used is a working filter and a filter in the form of a standby switch, which is heavy, large in size, Disadvantages such as low efficiency, waste of stock solution, etc., and large pressure fluctuations during the switching process of the equipment, affect the continuity of the spinning process, and then affect the product quality. However, in the prior art, some filtering equipment capable of realizing online backwashing are limited in form, with low filtration pressure, short backwashing and screen changing ...

AI Technical Summary

Problems solved by technology

[0002] In my country's chemical fiber production in recent decades, the raw liquid filtration of chemical fiber production has always been a relatively backward form of equipment. Most of the filtering equipment currently used is a working filter and a filter in the form of a standby switch, which is heavy, large in size, Disadvantages such as low efficiency, waste of stock solution, etc., and large pressure fluctuations during the switching process of the equipment, affect the continuity of the spinning process, and then affect the product quality

However, in the prior art, some filtering equipment that can realize online backwashing is limited by the form, the filtration pressure is low, the cycle of backwashing and screen change is short, and the waste of raw liquid in the process of backwashing and screen change is also large.

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