Filter screen cylinder assembly of back-washing filter
A filter and backwashing technology, which is applied in the direction of gravity filter, fixed filter element filter, filter separation, etc., can solve the problems of short service life, affecting the normal use of the filter element, and unable to wash away the sediment, so as to achieve long service life , Reliable structure, large filter area effect
Inactive Publication Date: 2013-03-27
NINGBO LONG WALL FLUID KINETIC SCI TECH
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Problems solved by technology
The filter element with this structure has the following problems: the emulsion sediment enters and accumulates in the sintered mesh, and backwashing cannot wash away the sediment in the sintered mesh, which affects the normal use of the filter element
The structural reliability of the filter element is not enough, and the service life is relatively short
Method used
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[0014] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0015] A filter cartridge assembly for a backwash filter, comprising a filter cartridge 1 and an inner skeleton assembly 2, the inner skeleton assembly 2 is arranged in the filter cartridge 1, and the filter cartridge 1 is spirally wound by a metal strip 3 with a wedge-shaped cross section Formed on the inner skeleton component 2, the filter screen cylinder 1 has filter ports 4 distributed spirally, the cross section of the filter port 4 is wedge-shaped, and the opening of the filter port 4 gradually narrows from the outside to the inside.
[0016] The inner frame assembly 2 includes a plurality of strip-shaped support rods 21 distributed in a ring to form a cylindrical skeleton, and the metal strip 3 is helically wound along the length direction of the strip-shaped support rods 21 .
[0017] The strip support bar 21 includes a square part 211...
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Abstract
The invention discloses a filter screen cylinder assembly of a back-washing filter. The filter screen cylinder assembly comprises a filter screen cylinder and an inner framework assembly, wherein the inner framework assembly is arranged inside the filter screen cylinder; the filter screen cylinder is formed in a way that a wedged metal strip is spirally wound on the inner framework assembly; spirally distributed filtering openings are arranged in the filter screen cylinder; the cross sections of the filtering openings are wedged; and the filter openings are gradually reduced from outside to inside. The filter screen cylinder assembly provided by the invention has the advantages in that the filter screen cylinder is formed in the way that the wedged metal strip with the wedged cross section is spirally wound on the inner framework assembly, and the cross sections of the filtering openings spirally distributed in the filter screen cylinder are wedged, so that the back-washing requirement can be satisfied well. The filter screen cylinder assembly provided by the invention is reliable in structure; the filtering area is very large due to no shielding outside; and the service life is long.
Description
technical field [0001] The invention relates to a filter, in particular to a filter screen cylinder assembly of a backwash filter. Background technique [0002] The backwash filter is the most important filter in the electro-hydraulic control system of the hydraulic support. It is mainly used to filter the emulsion entering the entire hydraulic support to ensure the cleanliness of the emulsion. The publication date is 2012.7.18, and the Chinese invention patent with patent number 201010184712.5 discloses an ultra-high pressure backwash filter element, which has the advantages of firm structure and large filtration area. The filter screen on the filter cylinder can be sintered with a six-layer structure network. The filter element with this structure has the following problems: the emulsion sediment enters and accumulates in the sintered mesh, and backwashing cannot wash away the sediment in the sintered mesh, which affects the normal use of the filter element. The Chinese ...
Claims
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IPC IPC(8): B01D29/31B01D29/66
Inventor 应永华孙朝辉姚志生蔡贤斌
Owner NINGBO LONG WALL FLUID KINETIC SCI TECH