Self-cleaning filter

Abstract

The invention relates to a filtering apparatus, specifically to a self-cleaning filter. The self-cleaning filter comprises a main filter tube and a lateral filter tube obliquely arranged relative to the main filter tube, wherein the left end of the main filter tube is a water inlet while the right end of the main filter tube is a water outlet; a filter chamber is arranged in the lateral filter tube; and a filter screen is mounted in the filter chamber. The self-cleaning filter is characterized in that an automatic regulating valve is arranged between the main filter tube and the lateral filter tube; the tail end of the lateral filter tube is provided with a filter screen fixing and sealing seat; and a valve is arranged in the filter screen fixing and sealing seat. The self-cleaning filter provided by the invention integrates the characteristics of a Y-shaped filter and a reverse-washing filter, and is simple in structure, low in manufacturing cost and small in size. Compared with the widely applied Y-shaped filter, a hand-operated valve or electrically-operated valve is additionally installed on an inner pipe thread so as to realize hand-operated or automatic sewage discharge.

Description

technical field [0001] The invention relates to a filtering device, in particular to a self-cleaning filter. Background technique [0002] The filter is an indispensable device on the conveying medium pipeline. It is usually installed at the inlet end of the pressure reducing valve, pressure relief valve, fixed water level valve or other equipment to eliminate impurities in the medium to protect the normal operation of the valve and equipment. use. When the fluid enters the filter cartridge with a filter screen of a certain specification, its impurities are blocked, and the clean filtrate is discharged from the filter outlet. When cleaning is required, just take out the detachable filter cartridge and reinstall it after treatment. Yes, therefore, the pipeline needs to be closed during maintenance, then disassembled, cleaned and reassembled. Not only does it affect the normal use of the equipment, but it is also troublesome to maintain, especially when it is not easy to dis...

AI Technical Summary

Problems solved by technology

Not only does it affect the normal use of the equipment, but it is also troublesome to maintain, especially when it is not easy to disassemble or rust.

[0003] Although the backwash filter on the market overcomes the disadvantage of inconvenient maintenance of the traditional filter, it has complex structure, high manufacturing cost, high maintenance cost, large equipment volume, and more importantly, it lacks products with small diameters below DN50.

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