Precision filter for chemical production and processing

Abstract

The invention discloses a precision filter for chemical production and processing, which comprises an outer cylinder, a filtering cylinder and a blow-off pipe, wherein the filtering cylinder is arranged in the outer cylinder, the top of the filtering cylinder is a blind end, the bottom of the filtering cylinder is an open end, and a driving shaft rotationally connected with the top of the outer cylinder is fixedly arranged at the top of the filtering cylinder; and a separation disc rotationally matched with the bottom of the filtering cylinder is fixedly arranged in the outer cylinder. In theinvention, the bottom of the filtering cylinder is open, a separation disc rotatably matched with the bottom of the filtering cylinder is arranged in the outer cylinder, the separation disc is provided with a sewage guide part, the sewage guide part comprises two sewage guide combinations positioned inside and outside the surface wall of the filtering cylinder, the two sewage guide combinations can be circularly communicated and blocked, and external high-pressure air enters the sewage guide combination positioned outside the filtering cylinder during communication; and impurities and dirt onthe inner surface wall of the filtering cylinder can be blown away from the filtering cylinder and then discharged through a blow-off pipe, the two sewage guide combinations can be connected and disconnected at different positions on the filtering cylinder through rotation of the filtering cylinder, and then blockage removing and blocking preventing treatment can be achieved in the normal operation process.

Description

technical field [0001] The invention relates to the technical field of chemical filtration, in particular to a precision filter for chemical production and processing. Background technique [0002] Precision filters are common in the chemical industry, such as crude oil filtration, chemical mixture filtration, etc. Its core component is a corrosion-resistant stainless steel sintered filter cartridge, and the filtration accuracy reaches the micron level. , block the filter cartridge and the original liquid during cleaning, and then connect the sewage pipe, backwash the inner cavity of the filter cartridge, and the impurities are discharged through the sewage pipe; the advantage of this kind of precision filter is that it is convenient for cleaning and maintenance of the filter cartridge; but there are still some defects: 1. The filter cartridge cannot be filtered normally during backwashing, and the filtration pressure gradually increases during use, and the filtration effici...

AI Technical Summary

Problems solved by technology

[0002] Precision filters are common in the chemical industry, such as crude oil filtration, chemical mixture filtration, etc. Its core component is a corrosion-resistant stainless steel sintered filter cartridge, and the filtration accuracy reaches the micron level. , block the filter cartridge and the original liquid during cleaning, and then connect the sewage pipe, backwash the inner cavity of the filter cartridge, and the impurities are discharged through the sewage pipe; the advantage of this kind of precision filter is that it is convenient for cleaning and maintenance of the filter cartridge; but there are still some defects: 1. The filter cartridge cannot be filtered normally during backwashing, and the filtration pressure gradually increases during use, and the filtration efficiency is low. Specifically, it is impossible to realize real-time cleaning during the working process to stabilize the filtration pressure; 3. In order to solve the situation that the cleaning filter cartridge cannot be cleaned in the normal production process, multiple filter cartridges are now used to rotate and filter, which is costly and complicated in structure

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