Hydraulic-cylinder-driven online-back-flushed plunger type mesh changer

Abstract

The invention relates to a hydraulic-cylinder-driven online-back-flushed plunger type mesh changer and belongs to the technical field of chemical fiber equipment. According to the hydraulic-cylinder-driven online-back-flushed plunger type mesh changer, two filtering mechanisms arranged at the outer circumference of a mesh changing plunger are matched with a liquid outlet flume and a liquid outletpassage formed in the internal wall of a mesh changing passage, the filtering of original liquid, the back flushing of a filter mesh assembly and the replacement of the filter mesh assembly are achieved through changing a position of a mesh changing valve body in the mesh changing passage by the mesh changing plunger by dint of a hydraulic cylinder, shut-down is not required under all states, online back-flushing and replacement are achieved, the continuity of original liquid filtering work is greatly improved, and the working efficiency is remarkably increased.

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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