Back washing filter
A filter and backwashing technology, which is applied in gravity filters, fixed filter elements, filter separation, etc., can solve the problems of filter element bulging, increase the labor intensity of laborers, reduce the service life of filter elements, etc., to ensure cleanliness , to ensure reliable commutation and to protect the service life
Active Publication Date: 2012-02-29
BEIJING TIANMA INTELLIGENT CONTROL TECH CO LTD
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Problems solved by technology
[0005] The manual backwashing filter needs to manually pull the backwashing handle for backwashing, which greatly increases the labor intensity of the laborers; due to system pressure fluctuations, when the pressure at the liquid inlet decreases, the liquid pressure at the liquid outlet is higher than that at the liquid inlet , the high-pressure fluid flows out from the inside of the filter element, which will cause the filter element to bulge, which greatly reduces the service life of the filter element
Method used
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[0014] Backwash filter of the present invention, its preferred embodiment is as figure 1 , figure 2 , image 3 Shown:
[0015] It includes a valve body 1, which is provided with a liquid inlet A, a liquid outlet B, and a sewage outlet E. The valve body 1 is provided with a plurality of valve core assemblies 16, a plurality of filter element assemblies 2, and a valve core assembly 16 There is a communication channel between the filter element assembly 2.
[0016] Specifically, two valve core assemblies 16 and two filter element assemblies 2 may be provided in the valve body 1, the two valve core assemblies 16 are correspondingly provided with two liquid inlets A, and the two filter element assemblies 2 are correspondingly provided with two liquid outlets. Port B, the two liquid inlets A are connected to each other, and the two liquid outlets B are connected to each other.
[0017] The spool assembly 16 includes a liquid inlet spool 6 and a blowdown spool 8 arranged back to...
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The invention discloses a back washing filter which comprises a valve body, wherein the valve body is provided with a liquid inlet, a liquid outlet and a drain outlet; a plurality of valve core components and a plurality of filter core components are arranged in the valve body; communicating channels are arranged between the valve core components and the filter core components; each valve core component comprises a liquid valve core and a drain valve core which are arranged back to back; small springs are arranged between liquid valve cores and drain valve cores; the rear ends of the drain valve cores are provided with push rods. The back washing filter also comprises a filter guide core, a non return valve and a pilot valve; the liquid outlet is communicated with liquid cavities at the rear ends of the pushing rods sequentially though the filter guide core, the non return valve and the pilot valve and is used for controlling conversion between a normal operating position and a back washing position. The invention has the advantages of convenient use and effectively protecting the service life of the filter core.
Description
technical field [0001] The invention relates to a filter, in particular to a backwash filter. Background technique [0002] With the continuous promotion of the bracket electro-hydraulic control system, the filter element is required to have an online cleaning function. [0003] The backwash filter in the prior art adopts a manual backwash filter or a backwash filter with a two-position two-way reversing mechanism. [0004] Above-mentioned prior art comprises following shortcoming at least: [0005] The manual backwashing filter needs to manually pull the backwashing handle for backwashing, which greatly increases the labor intensity of the laborers; due to system pressure fluctuations, when the pressure at the liquid inlet decreases, the liquid pressure at the liquid outlet is higher than that at the liquid inlet , The high-pressure fluid flows out from the inside of the filter element, which will cause the filter element to bulge, which greatly reduces the service life o...
Claims
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IPC IPC(8): B01D29/31B01D29/66
Inventor 韦文术王伟张龙涛宋艳亮郭新伟
Owner BEIJING TIANMA INTELLIGENT CONTROL TECH CO LTD