CN101703856A - Filter cloth of belt filter - Google Patents
Filter cloth of belt filter Download PDFInfo
- Publication number
- CN101703856A CN101703856A CN200910246652A CN200910246652A CN101703856A CN 101703856 A CN101703856 A CN 101703856A CN 200910246652 A CN200910246652 A CN 200910246652A CN 200910246652 A CN200910246652 A CN 200910246652A CN 101703856 A CN101703856 A CN 101703856A
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- Prior art keywords
- cloth
- filter
- fiber
- base cloth
- filtering
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Abstract
The invention discloses a filter cloth of a belt filter, relating to a filtering element. The invention aims at providing a filter cloth of a belt filter, with the advantages of high filtering precision, good filtering effect and long service life. The technical scheme is as follows: the filter cloth comprises a base cloth and fiber cloth layers with same fiber numbers on both sides thereof, wherein the filtering hole diameter of each fiber layer on the upper surface of the base cloth is gradually enlarged from top to bottom, and the filtering hole diameter of each fiber layer on the lower surface of the base cloth is not less than the filtering hole diameter of the fiber cloth above the base cloth. Compared with the prior art, the invention has the obvious advantages of long service life, high filtering efficiency and easy cleaning. The invention provides a filter cloth used for a belt filter.
Description
Technical field:
The present invention relates to the filter cloth of a kind of filter element, particularly a kind of band filter.
Background technology:
The filter cloth that present band filter is used is a multilayer belt filter cloth, base cloth top generally has three layers of fibrage, each fibrolaminar fiber number is identical, this filter fiber layer can make some particles be intercepted in the fibrage in filtration, cause filter efficiency low, and easy cleaning not, service life is short, and being generally promptly needs about one month to change.
Summary of the invention:
The filter cloth that the purpose of this invention is to provide the band filter of a kind of filtering accuracy height, good filtration effect and long service life.Technical scheme of the present invention is, comprise the fiber layer of cloth that base cloth and both sides fiber number thereof are identical, it is characterized in that: become big from top to bottom gradually at each fibrolaminar pore size filter of base cloth upper surface, the fiber cloth pore size filter above each fibrolaminar pore size filter of base cloth lower surface is not less than base cloth.It is long and filter efficiency is high and the remarkable advantage of easy cleaning that the present invention has the life-span compared with the prior art.
Description of drawings:
Accompanying drawing is a structural representation of the present invention.
The specific embodiment:
In conjunction with above accompanying drawing the present invention is elaborated, the reason that the life-span of existing filter cloth is low, find through long term studies, its reason is, the fiber number of the multi-layer fiber layer of base cloth layer top is identical, the particle in the liquid by behind the ground floor, can be by a certain internal layer (two or the 3rd even the 4th layers of interception be in filter layer of cloth), this particle that is intercepted at internal layer, generally be not easy to remove, and recover its strainability, cause filter efficiency low short with service life by cleaning (backwash).At above-mentioned reason, outermost pore size filter is definite according to filtering accuracy gradually to big by little by the aperture of outer each filtering layer to base cloth layer, and the aperture of the superiors' (skin) should be less than the desired particle diameter of filtration.
Embodiment: base cloth 4 is the monofilament nonwoven layer, above base cloth layer, be provided with the descending fiber non-woven layer of cloth of dawn number 3,2,1 from inside to outside successively, wherein outermost fiber Denier minimum, 2 layers, 3 layers fiber Denier increases gradually, below base cloth layer, also be provided with two-layer 5,6, the dawn of base cloth layer fiber is counted maximum, and the dawn number of the two-layer fiber of its below is not less than the fiber Denier of base cloth layer.
The preparation method of above-mentioned filter cloth is identical with the preparation method of existing nonwoven, according to the requirement of above-mentioned each layer fiber Denier, the laggard hand-manipulating of needle of fiber lapping successively with different dawn numbers stings into nonwoven respectively, at last hot pressing is carried out on its surface, make its smooth surface smooth, be beneficial to filter.
This multiple filtration cloth, because fiber Denier is from outside to inside increased gradually by little, thereby the solid particle that is filtered is all stayed filter cloth in appearance, when filter cloth forwards the below to, disposed from filter cloth by scaler, and can not enter in the filter cloth, thereby, this filter cloth filter efficiency height, and the life-span is long.Through overtesting, this filter cloth can use about six months continuously, has saved the expense of changing filter cloth for producer.
Claims (1)
1. the filter cloth of a band filter, comprise the fiber layer of cloth that base cloth and both sides fiber number thereof are identical, it is characterized in that: become big from top to bottom gradually at each fibrolaminar pore size filter of base cloth upper surface, the fiber cloth pore size filter above each fibrolaminar pore size filter of base cloth lower surface is not less than base cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910246652A CN101703856A (en) | 2009-11-26 | 2009-11-26 | Filter cloth of belt filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910246652A CN101703856A (en) | 2009-11-26 | 2009-11-26 | Filter cloth of belt filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101703856A true CN101703856A (en) | 2010-05-12 |
Family
ID=42374149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910246652A Pending CN101703856A (en) | 2009-11-26 | 2009-11-26 | Filter cloth of belt filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101703856A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102527152A (en) * | 2012-01-03 | 2012-07-04 | 金宝顺 | Filter cloth for extracting electrolytic copper liquid after electronic waste incineration |
-
2009
- 2009-11-26 CN CN200910246652A patent/CN101703856A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102527152A (en) * | 2012-01-03 | 2012-07-04 | 金宝顺 | Filter cloth for extracting electrolytic copper liquid after electronic waste incineration |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20100512 |