Filter outer net and preparation method thereof

Abstract

The invention belongs to the technical field of filter filtration, and particularly relates to a filter outer net and a preparation method thereof. The filter outer net comprises a fixed plate, a filter ring and a diversion joint; the filter ring is arranged between the fixed plate and the diversion joint; the inner arc surface of the filter ring is connected with an adjusting ring in a vertical sliding manner; filtering holes, which are uniformly distributed, are formed in the surface of the filter ring; adjusting holes, which are uniformly distributed, are formed in the surface of the adjusting ring, and the adjusting holes are matched with the filtering holes. The automatic adjustment of the filter value of the filter is effectively realized, the requirements of different fluids and different fluid states on various filter values can be met, and when the filter is used for a long time and the filter holes are blocked, the sizes of the filter holes can be automatically adjusted according to the pressure difference change, so that the problem of insufficient downstream fluids is solved.

Description

technical field [0001] The invention belongs to the technical field of filter filtration, in particular to a filter outer net and a preparation method thereof. Background technique [0002] A filter refers to an accessory that filters impurities or gases through filter paper. It generally refers to an automotive filter, which is an engine accessory. According to different filtering functions, it is divided into: oil filter, fuel filter (gasoline filter) filter, diesel filter, oil-water separator, hydraulic filter), air filter, air conditioning filter, etc. The engine has three types of filters: air, oil, and fuel, which are generally called "three filters". The upper cabin filter, commonly known as the four filters, is responsible for the filtration of the lubrication system, the medium in the combustion system, the engine intake system, and the cabin air circulation system. [0003] According to CN106731101A, a filter outer net and its preparation method, in the prior art,...

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Problems solved by technology

[0005] In order to make up for the deficiencies of the existing technology, in the prior art, the filter relies on a single filter ring to intercept and filter out harmful impurities in the fluid. The smaller the filter holes on the surface of the filter ring, the better the filtering effect, but the fluid passing capacity is limited. The worse it is, in order to solve the problem of filtering out the smallest particles of impurities on the same filter ring, and enabling the fluid to pass through the filter holes on the surface of the filter ring efficiently, it is obviously not feasible, and for a single size filter hole, it cannot adapt to different State fluid or different fluids, and after the filter hole is filtered for a long time, the impurities in the fluid will easily block the filter hole, which will affect the continued effective use of the filter ring, and the filter ring is often immersed in the fluid, so it is difficult to clean and other problems. The present invention A filter outer net and its preparation method are proposed

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