Filter

A filter and filter screen technology, applied in the fields of dispersed particle filtration, chemical instruments and methods, dispersed particle separation, etc., can solve the problems affecting the accuracy of the sensor, deviation of measurement results, clogging of the filter, etc., and achieves easy cleaning and density reduction. Small, the effect of improving the filtering accuracy

Inactive Publication Date: 2009-06-24
薛文伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This technology uses a flexible material called a folded filter screen that sticks into place over both supports during assembly or disassembly processes for better filtering performance. By allowing the filters inside to expand when compressed by external force, they become less dense while still being effective at removing impurities such as dust particles. They also allow them to be used with different types of equipment without losing their effectiveness due to changes made after installation.

Problems solved by technology

Gas analyzing industries have developed various techniques that require accurate measurements from gases containing small amounts of particles or other substances suspended therein during testing procedures such as measuring pollution levels caused by combustion engines emissions. These filters are designed with specific technical features aimed at preventing these contaminants from getting inside their sensors' channels causing errors in the resulting data. However, this problem can lead to difficulties in removing them periodically due to buildup of dirt over time.

Method used

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Embodiment 1

[0010] Example 1, such as figure 1 As shown, the filter includes a cylindrical filter housing 1, the upper part of the filter housing 1 is provided with an air inlet pipe 2, and the lower part is provided with a sewage pipe 4, and a filter element is arranged in the filter housing 1, and the filter element Including an upper support plate 6 and a lower support plate 7, between the upper support plate 6 and the lower support plate 7 is a foldable annular filter screen 5 arranged in a V shape, and the filter layer of the filter screen 5 is a stretchable textile When the upper support plate 6 compresses it under pressure, the pore diameter of the filter layer becomes smaller and the density increases. An air outlet pipe 3 is provided, and the air outlet end of the air outlet pipe 3 extends out of the filter housing 1 and is sealed with the filter housing 1 . When in use, the sample gas enters the filter housing 1 from the intake pipe 2, and under the pressure of the sample gas thro

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Abstract

The invention relates to a filter, which comprises a filter shell, wherein the upper part of the filter shell is provided with an air inlet pipe, and the lower part of the filter shell is provided with a blow-off pipe. The filter is characterized in that a filter core is arranged inside the filter shell and comprises an upper supporting plate and a lower supporting plate; a foldable annular filter screen is arranged between the upper supporting plate and the lower supporting plate; an air outlet pipe is arranged on the lower supporting plate; an air outlet end of the air outlet pipe is extended out of the filter shell; the foldable filter screen is arranged between the upper supporting plate and the lower supporting plate; and a filter layer of the filter screen is telescopic. When the filter layer is compressed by the upper supporting plate under pressure, the pore diameter of the filter layer is reduced and the density is increased, so that the filtration precision can be improved. Under the condition of reverse blowing from the air outlet pipe, the air pressure drives the upper supporting plate to restore to the original state; the filter screen is stretched; the filter layer of the filter screen is loosened; and the density of the filter layer is reduced, so that air can easily remove dust on the outer surface of the filter screen, thereby the filter is convenient to use.

Description

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Claims

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Application Information

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Owner 薛文伟
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