CN209967778U - Diaphragm filter plate and corresponding filter press - Google Patents

Diaphragm filter plate and corresponding filter press Download PDF

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Publication number
CN209967778U
CN209967778U CN201920461580.2U CN201920461580U CN209967778U CN 209967778 U CN209967778 U CN 209967778U CN 201920461580 U CN201920461580 U CN 201920461580U CN 209967778 U CN209967778 U CN 209967778U
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Prior art keywords
core plate
filter
plate
filter plate
diaphragm
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CN201920461580.2U
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Chinese (zh)
Inventor
刘振华
朱国利
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Jingjin Equipment Co Ltd
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Jingjin Environmental Protection Inc
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Abstract

The utility model discloses a diaphragm filter plate and corresponding pressure filter belongs to the filtration equipment technical field among the solid-liquid separation process. A diaphragm filter plate comprises a sealing frame, a core plate, diaphragms, core plate slope edges, core plate supporting points, supporting point arc surfaces, a feeding hole, four-corner liquid outlet holes and a high-pressure medium hole, wherein an internal cavity structure is formed by the two diaphragms and the core plate. When the periphery of the filter plate is thickened, the middle part of the core plate is properly thinned, the volume of the filter chamber is effectively increased, and the treatment capacity and the production efficiency of filter materials are improved. The existing cylindrical core plate supporting points are improved into circular truncated cone-shaped bosses, the circular truncated cone of the core plate supporting points is in smooth connection with the main plane of the core plate by adopting a cambered surface, the supporting contact area of the core plate and the diaphragm is increased, and the pressure transmission between the edge of the filter plate and the middle part is uniform.

Description

Diaphragm filter plate and corresponding filter press
Technical Field
The utility model belongs to the field of filtering equipment (fluid machinery) in the solid-liquid separation process, and relates to a membrane filter press.
Background
The filter press is a universal solid-liquid separation device and is widely applied to the industries of chemical industry, metallurgy, pharmacy, dye, food, brewing, ceramics, environmental protection and the like. The filter plate is a core composite element of the filter press, and the core plate and the diaphragm are combined into the diaphragm filter plate. The filter plates are arranged on a cross beam of the filter press and generally adopt a combination of a diaphragm filter plate and a solid box-type filter plate, and the concave parts of the two filter plates form a filter chamber; the projecting part of the filter plate supports an elastic pressing diaphragm which wraps the filter cloth. The membrane filter press is a high-pressure filtration device, and the filtration process comprises the following steps: the filter material is input by external pressure through a feed hole of the filter chamber for low-pressure filtration, particles in the material are intercepted by the filter cloth to form a filter cake, filtrate flows out through a liquid outlet hole of the filter chamber, high-pressure fluid or gas medium is introduced through a high-pressure medium hole of the cavity to enable the diaphragm to press the filter cake for the second time, the filter chamber bears the filter cake, and the gravity slag discharge is realized by pulling the filter plate open.
The prior membrane filter plate of the filter press has the following defects: the side surface of the core plate of the filter plate is a concave flat bottom surface, the periphery of the filter plate with the same thickness is not thick, the high-pressure resistance is poor, and the filter plate is easy to crack; the middle part of the core plate of the filter plate is thicker, and the volume of the filter chamber is smaller; the cylindrical membrane supporting boss of the core plate has small supporting area, and the pressure transmission between the edge of the filter plate and the middle part is not uniform; the flow guiding effect of the plane filter plate is not good.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the defect of current pressure filter diaphragm filter plate, solving corresponding technical problem, providing a diaphragm filter plate of strengthening the increase-volume.
The utility model provides a technical scheme that prior art problem adopted is: a diaphragm filter plate comprises a sealing frame, a core plate, a diaphragm, a core plate slope edge, a core plate supporting point cambered surface, a feeding hole (groove), four-corner liquid outlet holes (grooves) and a high-pressure medium hole, and is characterized in that the bottom surface of the periphery of the filter plate is provided with a thickened core plate slope edge, the core plate slope edge is in a slope shape, and the core plate slope edge is smoothly connected with the main plane of the core plate; the core plate slope edges are arranged on the peripheral bottom surfaces of the filter plates, so that the peripheries of the filter plates are correspondingly thickened, the high-pressure resistance of the filter plates is enhanced, and the fracture probability of the filter plates is effectively reduced.
Further, the slope gradient of the core plate slope edge is 4-6% (the maximum slope length is 120mm, and the maximum slope height is 6 mm). The slope refers to the ratio of the vertical height h of the slope to the distance l in the horizontal direction, and the slope = (h/l) × 100%.
Further, the cavity depth of the diaphragm filter plate is 40-55 mm. The periphery of the filter plate is thickened, and the middle part of the core plate is properly thinned, so that the depth of the cavity of the diaphragm filter plate is 40-55mm, the volume of a filter chamber can be effectively increased, the filter material treatment capacity is improved, and the production efficiency is correspondingly improved.
Furthermore, the round pits on the surface of the membrane are in a blind net type round bump shape, and the round pits increase the friction force of a filter cake and form a seepage flow guide network.
Furthermore, the core plate supporting points are truncated cone-shaped protruding parts. The longitudinal section of the truncated cone-shaped convex part is trapezoidal. The cylindrical protruding part of the existing filter plate is improved into a circular truncated cone-shaped protruding part, the circular truncated cone of the core plate supporting point is connected with the main plane of the core plate in a smooth mode through the cambered surface, the maximum radian of the cambered surface is 30 degrees, the contact supporting area of the diaphragm and the core plate is increased, stress concentration is reduced, and the pressure transfer performance of the middle of the filter plate is enhanced.
The utility model also provides a pressure filter, this pressure filter uses the utility model provides a diaphragm filter plate.
The utility model provides a diaphragm filter plate and corresponding pressure filter has structure optimization, high-efficient durable, anti high pressure, advantage that the price/performance ratio is high, has both prolonged the life of filter plate and filter cloth, still increases the filter chamber volume and has improved production efficiency.
Drawings
Fig. 1 is a schematic diagram of the front structure of the membrane filter plate of the present invention.
Fig. 2 is a schematic side view of the membrane filter plate of the present invention.
Reference numerals: 1-four-corner liquid outlet holes, 2-feed holes, 3-sealing frames, 4-core plate supporting points, 5-high-pressure medium holes, 6-membranes, 7-core plate slope edges, 8-core plate supporting point cambered surfaces and 9-core plates.
Detailed Description
The technical solutions in the embodiments of the present invention are described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some preferred embodiments of the present invention, but not all embodiments. Based on the embodiment of the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
A diaphragm filter plate mainly comprises four-corner liquid outlet holes 1, a feed hole 2, a sealing frame 3, a core plate supporting point 4, a high-pressure medium hole 5, a diaphragm 6, a core plate slope edge 7, a core plate supporting point cambered surface 8 and a core plate 9. The diaphragm filter plate is an internal cavity structure consisting of a core plate 9 and two diaphragms 6. The core plate 9 is of a solid structure and is formed by smoothly connecting and compounding the main plane of the core plate 9 and the slope edge 7 of the core plate. The slope edge 7 of the core plate at the periphery of the filter plate is made into a long slope edge with the slope of 4-6% (the maximum slope length is 120mm, and the maximum slope height is 6 mm), so that the periphery of the filter plate is thickened correspondingly, the high-pressure resistance of the filter plate is enhanced, and the fracture probability of the filter plate is effectively reduced. When the periphery of the core plate is thickened and the overall thickness of the filter plate is kept unchanged, the middle part of the core plate 9 is properly thinned, so that the depth of the cavity is increased to 40-55mm, the volume of the filter chamber is effectively increased, and the treatment capacity of the filter material is improved. The core plate supporting points 4 are circular truncated cone-shaped bosses, circular truncated cones of the core plate supporting points 4 are connected with the main plane of the core plate 9 in a smooth mode through the core plate supporting point cambered surfaces 8, the maximum radian of the cambered surfaces is 30 degrees, the contact supporting area of the diaphragm and the core plate is increased, stress concentration is reduced, the pressure transmission performance of the middle of the filter plate is enhanced, the pressure transmission between the edge of the filter plate and the middle of the filter plate is uniform, and the service life of the. The round pits on the surface of the membrane 6 are in a blind net type round salient point shape, and the round pits increase the friction force of filter cakes and form a seepage flow guide network. The filter plate structure has no dead angle, reduces the adsorption surface of the filter cake, and leads the filter residue (filter cake) to be discharged more cleanly, thereby improving the production efficiency.
Example 2
A filter press equipped with the membrane filter plates described in example 1. The working process of the filter press is as follows: a diaphragm filter plate and a solid box-type filter plate in the embodiment 1 are combined for use, the diaphragm filter plate and the solid box-type filter plate are arranged and installed on a cross beam of a filter press, filter cloth is fixed on each filter plate, a pressing device presses the filter plates, concave parts (deep chambers) of adjacent filter plates form a larger filter chamber, and a sealing frame 1 seals the filter chamber; the thickened core plate slope edge 7 enhances the pressure resistance of the filter plate; the core plate supporting points 4 support the membrane in contact with the membrane; under the pressure action of a material conveying pump, materials are input through the external pressure of a filter chamber feeding hole (groove) 2 for low-pressure static filtration; the filter cloth intercepts particles in the materials to form a filter cake; forming a filter material seepage flow guide network through the hemp points on the surface of the membrane 6, increasing the friction force for adsorbing a filter cake, and discharging filtrate through liquid outlet holes (grooves) 1 at four corners of the filter plate; high-pressure fluid or gas medium is introduced through the high-pressure medium hole 5 of the chamber to press the filter cake for the second time by the diaphragm, so that the water content of the filter cake is reduced to the lowest point, and the purity of the filter cake and the recovery rate of filtrate are improved; the filter chamber bears filter cakes, the filter plate is pulled open through the plate pulling mechanism, gravity slag discharging is achieved, and repeated intermittent cycle work is achieved.

Claims (5)

1. A diaphragm filter plate comprises a sealing frame, a core plate, diaphragms, core plate slope edges, core plate supporting points, supporting point arc surfaces, a feeding hole, four-corner liquid outlet holes and a high-pressure medium hole, wherein an internal cavity structure is formed by the two diaphragms and the core plate.
2. The membrane filter plate of claim 1, wherein the slope of the core plate slope is 4-6% (maximum slope length 120mm, maximum slope height 6 mm).
3. The membrane filter plate of claim 1, wherein the chamber depth of the membrane filter plate is 40-55 mm.
4. The membrane filter plate of claim 1, wherein the core plate support points are truncated cone-shaped protrusions, the truncated cone of the membrane support point is smoothly connected with the main plane of the core plate by an arc surface, and the maximum arc degree of the truncated cone of the support point is 30 degrees.
5. A filter press comprising a membrane filter plate according to any one of claims 1 to 4.
CN201920461580.2U 2019-04-08 2019-04-08 Diaphragm filter plate and corresponding filter press Active CN209967778U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920461580.2U CN209967778U (en) 2019-04-08 2019-04-08 Diaphragm filter plate and corresponding filter press

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920461580.2U CN209967778U (en) 2019-04-08 2019-04-08 Diaphragm filter plate and corresponding filter press

Publications (1)

Publication Number Publication Date
CN209967778U true CN209967778U (en) 2020-01-21

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112604332A (en) * 2020-12-28 2021-04-06 景津环保股份有限公司 High pressure resistant combination formula rubber membrane board of joining in marriage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112604332A (en) * 2020-12-28 2021-04-06 景津环保股份有限公司 High pressure resistant combination formula rubber membrane board of joining in marriage

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Address after: 253000 shoujingjin group, Jinghua Road North, Dezhou Economic Development Zone, Shandong Province

Patentee after: Jingjin Equipment Co.,Ltd.

Address before: 253000 shoujingjin group, Jinghua Road North, Dezhou Economic Development Zone, Shandong Province

Patentee before: Jing Jin Environmental Protection Inc.

CP01 Change in the name or title of a patent holder