Screen mesh type composite filter plate
A composite type, filter plate technology, applied in the direction of filtration separation, gravity filter, loose filter material filter, etc., to achieve the effect of prolonged service life, high mechanical strength, and reduced water head loss
Inactive Publication Date: 2006-10-11
叶善园
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Problems solved by technology
[0003] In order to overcome the above-mentioned shortcomings of the existing direct filter plate, the present invention provides a screen-type composite filter plate with relatively high mechanical strength and relatively large opening ratio.
Method used
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Embodiment 1
[0017] Embodiment 1 can also be as Figure 4 As shown, the screen 4 is bonded on the top of the filter plate 1, or as Figure 5 Shown, cast screen cloth 4 in the inside of filter plate 1. Of course, in the second embodiment, the screen 4 can also be bonded on the top or bottom of the filter plate 1 , or the screen 4 can be poured inside the filter plate 1 .
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The invention relates to a gas-water backwash method for regenerating the filtration material, belonging to the regeneration technique of filtration material of filter. The screen mesh composite filter plate used in water treatment filter tank is formed by filter plate and the filter silt or micro holes on the filter plate, while the filter plate is adhered or poured with screen mesh. The invention has the advantages that high mechanical strength, long service life, large porous rate and reduced water head loss.
Description
Technical field [0001] The present invention relates to the regeneration of filter material in filters, in particular to the regeneration of filter material by air-water backwashing. Background technique [0002] The quality of a filter's operating conditions has a major impact on the quality of effluent water and the cost of water production. In the initial design of various types of filters such as fast filter, slow filter, valveless filter, siphon filter, and double valve filter, the filter layer is composed of pebbles, anthracite, and filter sand gradation. In the early 1980s, foreign filter plate and filter head assembly forms were introduced. On December 3, 2000, the applicant invented the "straight filter plate" (ZL00134791.8), which eliminated the filter head and opened the filter seams or holes directly on the filter plate, fundamentally changing the filter head. , The combination of filter plates significantly improves the quality of effluent water and reduces th...
Claims
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Inventor 叶善园
Owner 叶善园