CN200960441Y - Integral polypropylene diaphragm filter plate structure - Google Patents

Abstract

The utility model relates to an integral polypropylene-membrane filter plate structure, comprising a center lining plate and polypropylene membrane filter sheets, wherein the two polypropylene-membrane filter sheets are respectively welded with two sides of the center lining plate. The utility model has the advantages that the utility model can reduce investment cost, obtain lower filter cake moisture percentage, heat the upper and lower sealing surfaces of the lining plates and the upper and lower opposite sides of the membrane at same time and welding at once via installing upper and lower heating plates on a thermal welding machine, and remove the pressure centralization of membrane sheets, thereby extending the service life of the membrane sheets.

Description

Integrated polypropylene diaphragm filter-plate structure

Technical field:

The utility model relates to a kind of integral polypropylene septum filter plate structure, belongs to membrane filter plate and makes the field.

Background technology:

The patent No. 01278300.5, title " combined type polypropylene diaphragm filter disc ", this membrane filter plate mainly are made up of central layer, diaphragm and charging through hole; Wherein, be provided with the charging through hole at central layer and diaphragm middle part, central layer and diaphragm are one being bonded near the position of charging through hole and position, edge thereof.Its weak point: the one, there is the slit between central layer and diaphragm, thoroughly sterilization; The 2nd, be planar structure around diaphragm and sealing surface, charging aperture and the support rim, stress is concentrated and can't be solved, and when diaphragm squeezed maximum position, suffered tension was also very big, shortened the service life of diaphragm greatly; The 3rd, water conservancy diversion speed is slow, is unfavorable for that diaphragm back side press media is full of rapidly or release fast.

Summary of the invention:

Purpose of design: the weak point of avoiding background technology to exist, design a kind of seal bactericidal effect good, can overcome diaphragm stress effectively and concentrate the short deficiency of diaphragm life-span caused, and the integrated polypropylene diaphragm filter disc structure that can help that diaphragm back side press media is full of rapidly or discharge fast.

Design: in order to realize above-mentioned purpose of design.1, integrated polypropylene diaphragm filter-plate once is welded by a center liner plate and two polypropylene diaphragms on structural design.Because integral structure does not have unnecessary slit, does not have split type required seal, special substance anchor clamps etc., that is to say there is not antihygienic dead angle, sterilization is more thorough, and adopts full polypropylene material, and the filter material range of application is wideer.2, all to adopt pp material be main material for center liner plate, diaphragm, purpose strengthens its intensity and toughening modifying, because it has that chemical resistance is good, temperature resistant range wide (10～90 ℃), fatigue life excellence, high temperature steam sterilization advantage, therefore polypropylene is as thermoplastic, have recuperability, more more convenient, more economical on the manufacturing diaphragm than rubber.3, around near sealing surface, charging aperture and support rim, adopt slope transition design at diaphragm, purpose is to concentrate for the stress of alleviating and eliminate herein, when making diaphragm squeeze maximum position, suffered herein tension is also minimum, prolongs the service life of diaphragm greatly.Be subjected to the polypropylene material elastic limit simultaneously, compare external no gradient infrastructure product, the squeezing stroke of the diaphragm that extended can obtain the thinner more filter cake of low-water-content that reaches on year-on-year basis.4, adopt contour uniform design at the positive filter point of diaphragm, compare like product, the rate of filtration of whole filtering surface, saturating liquid speed have uniformity.5, be furnished with the design of supporting small salient point at the diaphragm back side all around near sealing surface, purpose plays guide functions except that supporting diaphragm, help that diaphragm back side press media is full of rapidly or discharge fast, and be furnished with lower small salient point on the liner plate surface, center, mainly play guide functions.6, the polypropylene diaphragm blank adopts injection molded.The blank sealing surface adopts saturating empty design, and purpose reduces contraction distortion, does not need plane processing before welding.The center liner plate adopts press forming, and sealing surface does not need plane processing before welding.Compare product in the past, saved processing step.Hot plate welding is met sb. at the airport and is furnished with two heating plates up and down, can heat simultaneously the upper and lower sealing surface of liner plate and the upper and lower diaphragm back side, and welding is once finished.After the thermal finalization, again membrane filter plate sealing surface and each hole are carried out processes.Its technical scheme: integrated polypropylene diaphragm filter-plate structure, it comprises center liner plate (2) and polypropylene diaphragm filter disc (1,3), two polypropylene diaphragm filter discs (1,3) are welded with center liner plate (2) two sides respectively.

The utility model is compared with background technology, and the one, the integrated polypropylene diaphragm filter disc can be used with common filter plate, reduces investment cost; The 2nd, whole filter press adapted integrated polypropylene diaphragm filter disc can obtain lower filter cake moisture content; The 3rd, hot plate welding is met sb. at the airport and is furnished with two heating plates up and down, can heat simultaneously the upper and lower sealing surface of liner plate and the upper and lower diaphragm back side, and welding is once finished, and few welding once; The 4th, eliminated diaphragm stress and concentrated, prolonged the service life of diaphragm; The 5th, various forms such as charging during the membrane filter plate feeding manner can adopt, upward charging, angle charging, charging down, the outer charging of plate, convenient different filter materials are selected for use.

Description of drawings:

Fig. 1 is the schematic diagram of integrated polypropylene diaphragm filter-plate structure.

The specific embodiment:

Embodiment 1: with reference to accompanying drawing 1.Integrated polypropylene diaphragm filter-plate structure, it comprises center liner plate 2 and polypropylene diaphragm filter disc 1 and 3, two polypropylene diaphragm filter discs 1 and 3 are welded with center liner plate 2 two sides respectively, polypropylene diaphragm filter disc 1 and 3 is being designed to transitional slope near the polypropylene diaphragm filter disc around sealing surface 10, charging aperture 11 and the brace table 5, polypropylene diaphragm filter disc 1 and 3 positive filter points 8 adopt contour uniform, the polypropylene diaphragm filter disc 1 and 3 back sides are near around the sealing surface, be furnished with and support small salient point 9, the center is furnished with lower small salient point 6 on the liner plate surface.Above-mentioned diaphragm 1 and 3 structure adopt mould, plastics extrusion device and the injection mo(u)lding of vertical pressure mechanism.Center liner plate 2 adopts mold injection molding.Its forming technology: the center liner plate adopts mould, forcing press and plastics press forming, the polypropylene diaphragm blank adopts mold injection to be shaped, hot plate welding is met sb. at the airport and is furnished with two heating plates up and down, can heat simultaneously the upper and lower sealing surface of center liner plate and the upper and lower polypropylene diaphragm back side, welding is once finished, after the thermal finalization, again membrane filter plate sealing surface and each hole are carried out processes.

What need understand is: though the foregoing description is to the utility model detailed explanation of contrasting; but these explanations; just to simple declaration of the present utility model; rather than to restriction of the present utility model; any innovation and creation that do not exceed in the utility model connotation all fall in the protection domain of the present utility model.

Claims (5)

1, a kind of integrated polypropylene diaphragm filter-plate structure, it comprises center liner plate (2) and polypropylene diaphragm filter disc (1,3), it is characterized in that: two polypropylene diaphragm filter discs (1,3) are welded with center liner plate (2) two sides respectively.

2, integrated polypropylene diaphragm filter-plate structure according to claim 1 is characterized in that: polypropylene diaphragm filter disc (1,3) is being designed to transitional slope near sealing surface (10), charging aperture (11) and brace table (5) polypropylene diaphragm filter disc all around.

3, integrated polypropylene diaphragm filter-plate structure according to claim 1 is characterized in that: polypropylene diaphragm filter disc (1,3) positive filter point (8) adopts contour uniform.

4, integrated polypropylene diaphragm filter-plate structure according to claim 1 is characterized in that: polypropylene diaphragm filter disc (1, the 3) back side is furnished with and supports small salient point (9) near around the sealing surface.

5, integrated polypropylene diaphragm filter-plate structure according to claim 1 is characterized in that: be furnished with lower small salient point (6) on the liner plate surface, center.

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