WO2020113553A1

WO2020113553A1 - High-elasticity diaphragm filter plate with diaphragm sheets

Info

Publication number: WO2020113553A1
Application number: PCT/CN2018/119742
Authority: WO
Inventors: 杨振民; 张居亮; 刘建成; 张振利; 陈卫; 李宪勇; 张志军; 刘少磊; 郭春瀛; 魏冰; 殷培博
Original assignee: 河南大张过滤设备有限公司
Priority date: 2018-12-07
Filing date: 2018-12-07
Publication date: 2020-06-11

Abstract

Disclosed is a high-elasticity diaphragm filter plate with diaphragm sheets, the diaphragm filter plate being formed by two diaphragm sheets being connected to each other, wherein each diaphragm sheet comprises an outer frame (01), an inner ring (04), a bump (03) and an elastic squeezing filter membrane (02); the outer frames (01) and the inner rings (04) of the two diaphragm sheets are fixedly connected to form the high-elasticity diaphragm filter plate with diaphragm sheets; a sealed squeezing cavity is formed between the two diaphragm sheets; the elastic squeezing filter membrane (02) is fixedly connected between the inner ring (04) and the outer frame (01); raised points (12) and the bump (03) are fixedly connected to the elastic squeezing filter membrane (02); the right part of the outer frame (01) is provided with a squeezing fluid transport hole (13); four corners of the outer frame (01) are provided with washing effluent export holes (05); an end part of the washing effluent export hole (05) is provided with a washing effluent hole (06); and an end part of the washing effluent hole (06) is provided with a washing effluent inclined hole (07).

Description

Specification Name of the invention: High elastic diaphragm membrane filter plate Technical field

[0001] The present invention belongs to the technical field of membrane filter plates, and in particular relates to highly elastic membrane plate membrane filter plates.

Background technique

[0002] The membrane filter plate of a general filter press is composed of two elastic membranes and a middle core plate, a total of three pieces, which is passed into the external pressing medium (water or compressed air, etc.) and enters between the middle core plate and the two side membranes In the chamber, the diaphragm swells to squeeze the filter cake formed in the filter chamber, thereby better achieving solid-liquid separation and improving the solid content of the filter cake. The diaphragm is the main moving part, but due to the intermediate core Due to the limitation of the plate, the moving range of the diaphragm is small, and the pressing effect of the filter cake will be affected to a certain extent, resulting in a higher water content of some filter cakes, and because the membrane filter plate is composed of three pieces, the middle core plate is a solid core thick plate The weight is heavier and the cost is higher, and the three-piece combination process also causes the cost to rise in one injection. Therefore, it is necessary to provide a high-elastic diaphragm membrane filter plate that is easy to use, low in manufacturing cost, and has good pressing effect.

SUMMARY OF THE INVENTION

[0004] The object of the present invention is to provide a membrane filter plate with high elasticity, which is easy to use, low in manufacturing cost, and good in pressing effect.

[0005] The object of the present invention is achieved as follows: a high-elastic diaphragm membrane filter plate, which is formed by connecting two diaphragm sheets, each diaphragm sheet includes an outer frame, an inner ring, a boss and an elastic press filter membrane, The outer frame and the inner ring of the two diaphragms are fixedly connected to form a highly elastic diaphragm filter plate, a closed press chamber is formed between the two diaphragms, the inner ring of the diaphragm and the outer frame Elastic press filter membranes are fixedly connected therebetween, the elastic press filter membranes are fixedly connected with bumps and bosses, and the right part of the outer frame is provided with a pressurized fluid transmission that connects the press chambers between the elastic press filter membranes A hole, a water washing out liquid outlet hole is provided at four corners of the outer frame, a water washing out liquid hole is provided at an end of the water washing out liquid outlet hole, and a water washing out liquid oblique hole is provided at an end of the water washing out liquid hole .

[0006] The diaphragm sheet is pre-prepared in an injection mold by an elastic press filter membrane that has been injection molded in advance as an insert, and the outer frame, the boss, and the inner ring are melt-welded and connected as a whole by re-injection.

[0007] The bosses and bumps on the elastic press filter membrane are evenly arranged within the outer frame. [0008] The outer frame and the inner ring of the two diaphragms are symmetrically welded or bonded to form a highly elastic diaphragm filter plate, and the welding position of the two diaphragms is the outer frame welding fusion surface and the inner ring welding The fusion surface and the welding surface must not exceed the minimum groove plane on the elastic press filter membrane, and the minimum groove plane and the intermediate welding surface must be kept at a distance of more than 1mm.

[0009] The welding of the two diaphragms only involves welding of the outer frame welding fusion surface and the inner ring welding fusion surface, and the welding position does not involve the elastic press filter membrane and the boss.

[0010] The outer frame, inner ring and boss are made of hard material, and the elastic press filter membrane is made of elastomer material.

[0011] The elastic squeeze filter membranes are provided with support bars at the symmetrical positions on the upper and lower surfaces of the outer periphery of the bosses on the outer periphery of the convex press filter membrane, and the cross-sectional area of the contour line corresponding to the lower surface support bars is smaller than that of the upper surface support bars, etc. The cross-sectional area of the high line.

[0012] The distance between the lowest plane of the elastic press filter membrane close to the position of the boss and the welding plane is kept at a certain distance, the minimum distance should be greater than 0.5mm, and the maximum distance should not exceed 5mm.

[0013] The inner periphery of the first circle of the elastic press filter membrane has a certain inclination angle, greater than 3° and less than 30°, the outer periphery of the first circle is parallel to the inner periphery of the first circle or has a small angle, Angle angle is not greater than 5°.

[0014] The junction of the elastic press filter membrane and the boss may be provided with a deep groove adapted to the locking ring at the end of the elastic press filter membrane.

[0015] The beneficial effects of the present invention: In the present invention, the membrane filter plate is changed from the traditional two-diaphragm membrane plus the three-piece composition of the middle core plate to a new membrane filter plate consisting of only two membrane plates, eliminating the middle core plate, The diaphragm is mainly composed of an outer frame, an inner ring, an elastic press filter surface and a boss, etc. When making the diaphragm, the elastic press filter film that has been injection molded in advance is preset in the injection mold, and then the outer The frame, the boss, the inner ring and the elastic press filter membrane are welded together to form a whole, and then the two diaphragms are welded to make it a highly elastic diaphragm membrane filter plate, which is composed of the outer frame, the inner ring and the elastic membrane The fusion welding connection replaces the support effect of the intermediate core plate on the elastic membrane, which greatly reduces the weight of the new diaphragm filter plate. The diaphragm membrane has no limitation of the intermediate core plate, and the elastic movement range is increased. The filter cake pressing effect has been greatly improved, which greatly reduces the water content of the filter cake. Because there is no core plate, there is only one pressing chamber inside the membrane filter plate, so that the tympanic pressure of the membrane of the filter chamber on both sides of the membrane filter plate is uniform. It is consistent, and the pressing pressure on the filter cake on both sides is also the same, and the filter cake moisture content is also consistent; In general, the present invention has a reasonable design, has the advantages of convenient use, low manufacturing cost, and good pressing effect. Summary of the invention

technical problem

Solution to the problem

Beneficial effects of invention

Brief description of the drawings

BRIEF DESCRIPTION

[0016] FIG. 1 is a schematic view of the structure of a highly elastic membrane diaphragm filter plate of the present invention.

[0017] FIG. 2 is a cross-sectional view of the highly elastic diaphragm membrane filter plate of the present invention taken along the line A-A.

[0018] FIG. 3 is a partial cross-sectional view of the oblique hole of the water washing out liquid in the high-elastic diaphragm membrane filter plate of the present invention.

[0019] FIG. 4 is an enlarged view of Y in the highly elastic membrane diaphragm filter plate of the present invention.

[0020] FIG. 5 is an enlarged view of Z in the highly elastic membrane diaphragm membrane of the present invention.

[0021] FIG. 6 is an enlarged view of E in the high-elastic diaphragm membrane filter plate of the present invention.

[0022] In the picture: 01, outer frame 02, elastic squeeze filter membrane 03, boss 04, inner ring 05, water washing out liquid outlet hole 06, water washing out liquid hole 07, water washing out liquid oblique hole 08, support bar 09, Feed hole 10, water washout oblique mouth 11, sol tank 12, bump 13, pressurized fluid delivery hole 101, lowest groove plane 102, first circle inner peripheral surface 103, first circle peripheral surface 104, upper support bar 105, the upper surface 106 of the elastic press filter membrane, the lower surface 107 of the elastic press filter membrane, the lower support bar 108, the lowest plane 109, the upper edge 110 of the oblique hole of the washing liquid, the lower edge 201 of the oblique hole of the washing liquid, the outer frame welding Fusion surface 202, lock ring 203, elastic press filter membrane material 204 deep inside the outer frame, elastic press filter membrane material 205 deep inside the inner ring, annular arrangement boss 206 on the elastic press filter membrane material, inner ring Welding fusion surface.

Invention Example

detailed description

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

Example 1

[0025] As shown in FIG. 1, FIG. 2, FIG. 3, FIG. 4, FIG. 5, and FIG. 6, a high-elastic diaphragm membrane filter plate is formed by connecting two diaphragm membranes, each of which includes an outer frame 01, inner ring 04, boss 03 and elastic squeeze filter membrane 0 2. The outer frame 01 and the inner ring 04 of the two diaphragms are fixedly connected to form a high-elastic diaphragm diaphragm filter plate, and a closed press chamber is formed between the two diaphragms, the inner part of the diaphragm An elastic press filter membrane 02 is fixedly connected between the ring 04 and the outer frame 01, and the elastic press filter membrane 02 is fixedly connected with the bump 12 and the boss 03, and the right part of the outer frame 01 is provided with a connecting elasticity A pressurized fluid delivery hole 13 in the pressurizing chamber between the press filter membranes 02, the outer frame 01 is provided with water washing out liquid outlet holes 05 at the four corners, and the end of the water washing out liquid outlet hole 05 is provided with a water washing out liquid hole 06. The end of the water washing out liquid hole 06 is provided with a water washing out liquid oblique hole 07.

[0026] When the present invention is used: The present invention changes the diaphragm filter plate from the traditional two diaphragm plates plus the three-piece composition of the intermediate core plate to a new membrane filter plate consisting of only two diaphragm plates, eliminating the intermediate core plate, The diaphragm is mainly composed of an outer frame, an inner ring, an elastic press filter surface and a boss, etc. When making the diaphragm, the elastic press filter film that has been injection molded in advance is preset in the injection mold, and then the outer The frame, the boss, the inner ring and the elastic press filter membrane are welded together to form a whole, and then the two diaphragms are welded to make it a highly elastic diaphragm membrane filter plate, which is composed of the outer frame, the inner ring and the elastic membrane The fusion welding connection replaces the support effect of the intermediate core plate on the elastic membrane, which greatly reduces the weight of the new diaphragm filter plate. The diaphragm membrane has no limitation of the intermediate core plate, and the elastic movement range is increased. The filter cake pressing effect has been greatly improved, which greatly reduces the water content of the filter cake. Because there is no core plate, there is only one pressing chamber inside the membrane filter plate, so that the tympanic pressure of the membrane of the filter chamber on both sides of the membrane filter plate is uniform. It is consistent, and the pressing pressure on the filter cake on both sides is also the same, and the water content of the filter cake of the filter press also tends to be consistent. In general, the present invention has a reasonable design, and has the advantages of convenient use, low manufacturing cost, and good pressing effect.

Example 2

[0028] As shown in FIG. 1, FIG. 2, FIG. 3, FIG. 4, FIG. 5, and FIG. 6, a high-elastic diaphragm membrane filter plate is formed by connecting two diaphragm membranes, each of which includes an outer frame 01, the inner ring 04, the boss 03 and the elastic press filter membrane 0 2, the outer frame 01 and the inner ring 04 of the two diaphragms are fixedly connected to form a highly elastic diaphragm diaphragm filter plate, and the two diaphragms A closed press chamber is formed between the inner ring 04 and the outer frame 01 of the diaphragm is fixedly connected with an elastic press filter membrane 02, and the elastic press filter membrane 02 is fixedly connected with a convex point 12 and a convex Table 03, the right part of the outer frame 01 is provided with a pressurized fluid delivery hole 13 communicating with the pressing chamber between the elastic press filter membrane 02, and the four corners of the outer frame 01 are provided with water washing out liquid outlet holes 05, The end of the water washing out liquid outlet hole 05 is provided with a water washing out liquid hole 06, the end of the water washing out liquid hole 06 is provided with a water washing Outlet oblique hole 07, the diaphragm is preset in the injection mold by an elastic press filter membrane 02 that has been injection molded in advance as an insert, and the outer frame 01, the boss 03, and the inner ring 04 are four The fusion welding connection becomes a whole, the boss 03 and the bump 12 on the elastic press filter membrane 02 are evenly arranged within the outer frame 01, the outer 01 and the inner ring 04 of the two diaphragms pass through symmetry Welding or bonding to form a high elastic diaphragm membrane filter plate, the welding position of the two diaphragms is the outer frame welding fusion surface 201 and the inner ring welding fusion surface 206, the welding surface should not exceed the minimum groove on the elastic press filter membrane 02 The groove plane 101, the minimum groove plane 101 and the middle welding surface must maintain a distance of more than 1mm. The welding of the two diaphragms only involves welding of the outer frame welding fusion surface 201 and the inner ring welding fusion surface 206, the welding position The elastic press filter membrane 02 and the boss 03 are not involved, the outer 01, the inner ring 04 and the boss 03 are made of hard material, the elastic press filter membrane 02 is made of elastomer material, and the inside of the elastic press filter membrane 02 The elastic press filter membrane 02 on the periphery of the boss 03 is provided with support bars 08 at the symmetrical positions on the upper and lower surfaces, and the cross-sectional area of the contour line corresponding to the lower surface support bar 107 is smaller than the cross-sectional area of the contour line of the upper surface support bar 104. The distance between the lowest plane 108 of the elastic press filter membrane 02 near the position of the boss 03 and the welding plane is kept at a certain distance, the minimum distance should be greater than 0.5mm, and the maximum distance should not exceed 5 mm, the first circle of the elastic press filter membrane 02 The inner enclosure surface 102 has a certain inclination angle, greater than 3° and less than 30°, the outer surface 103 of the first circle is parallel to the inner enclosure surface 102 of the first circle or has a small included angle, the included angle is not greater than 5°, At the junction of the elastic press filter 02 and the boss 03, a deep groove matching the lock ring 202 at the end of the elastic press filter membrane 02 is provided.

[0029] When the present invention is used: The present invention changes the diaphragm filter plate from the traditional two diaphragm plates plus the three-piece composition of the intermediate core plate to a new membrane filter plate consisting of only two diaphragm plates, eliminating the intermediate core plate, The diaphragm is mainly composed of an outer frame, an inner ring, an elastic press filter surface and a boss, etc. When making the diaphragm, the elastic press filter film that has been injection molded in advance is preset in the injection mold, and then the outer The frame, the boss, the inner ring and the elastic press filter membrane are welded together to form a whole, and then the two diaphragms are welded to make it a highly elastic diaphragm membrane filter plate, which is composed of the outer frame, the inner ring and the elastic membrane The fusion welding connection replaces the supporting effect of the intermediate core plate on the elastic membrane, which greatly reduces the weight of the new membrane filter plate. The diaphragm membrane has no restriction on the intermediate core plate, and the elastic movement range is increased. The filter cake pressing effect has been greatly improved, which greatly reduces the water content of the filter cake. Because there is no core plate, there is only one pressing chamber inside the membrane filter plate, so that the tympanic pressure of the membrane of the filter chamber on both sides of the membrane filter plate is uniform. Consistent, and the pressing pressure on the filter cake on both sides is the same, and the water content of the filter cake of the filter press also tends to be consistent. The membrane filter plate eliminates the middle core plate, which reduces the overall weight of the membrane filter plate, adopts a two-piece structure, and the combination process is also simpler. Compared with the traditional one-shot injection molding, the cost of the second injection is lower. The manufacturing cost is reduced, and the increase of the chamber makes the displacement range of the elastic press filter surface increase, and the filter cake in the filter chamber will be fully pressed, the moisture content of the filter cake is reduced, and the elastic press filter membrane and At the junction of the outer frame, a deep groove matching the lock ring at the end of the elastic press filter membrane is provided to increase the area of the welding fusion surface of the boss and the elastic press filter membrane to improve the welding strength; in general, the design of the present invention It is reasonable, has the advantages of convenient use, low manufacturing cost and good pressing effect.

Claims

[Claim 1] A high elasticity diaphragm membrane filter plate, which is formed by connecting two diaphragm sheets, each diaphragm sheet includes an outer frame, an inner ring, a boss and an elastic press filter membrane, characterized by: The outer frame and the inner ring of the two diaphragms are fixedly connected to form a highly elastic diaphragm filter plate, a closed press chamber is formed between the two diaphragms, and the inner ring of the diaphragm and the outer frame are fixed An elastic press filter membrane is connected, the elastic press filter membrane is fixedly connected with bumps and bosses, and the right part of the outer frame is provided with a pressurized fluid delivery hole that connects the press chamber between the elastic press filter membranes. Four corners of the outer frame are provided with a water washing out liquid outlet hole, an end of the water washing out liquid outlet hole is provided with a water washing out liquid hole, and an end of the water washing out liquid hole is provided with a water washing out liquid oblique hole.

[Claim 2] The high-elasticity diaphragm membrane filter plate according to claim 1, characterized in that: the membrane sheet is pre-assembled in the injection mold by an elastic press filter membrane formed by injection molding in advance as an insert, The outer frame, the boss, and the inner ring are melt-welded to form a whole by re-injection.

[Claim 3] The highly elastic diaphragm membrane filter plate according to claim 1, wherein the bosses and bumps on the elastic press filter membrane are evenly arranged within the outer frame.

[Claim 4] The highly elastic membrane diaphragm filter plate according to claim 1, characterized in that: the outer frame and the inner ring of the two membrane diaphragms form a highly elastic membrane diaphragm filter by symmetric welding or bonding The welding position of the two diaphragms is the outer frame welding fusion surface and the inner ring welding fusion surface. The welding surface should not exceed the minimum groove plane on the elastic press filter membrane. The minimum groove plane and the middle welding surface must be kept at 1mm The distance above.

[Claim 5] The highly elastic diaphragm membrane filter plate according to claim 1, characterized in that: the welding of the two diaphragm membranes only involves welding of the outer frame welding fusion surface and the inner ring welding fusion surface, The welding position does not involve elastic press filter membranes and bosses.

[Claim 6] The highly elastic membrane diaphragm filter plate according to claim 1, wherein the outer frame, the inner ring and the boss are made of hard material, and the elastic press filter membrane is made of elastomer material.

[Claim 7] The highly elastic membrane diaphragm filter plate according to claim 1, characterized in that: the upper and lower surfaces of the elastic press filter membrane at the symmetrical positions on the upper and lower surfaces of the outer periphery of the boss inside the elastic press filter membrane Support bars are respectively provided, and the cross-sectional area of the contour line corresponding to the lower surface support bar is smaller than that of the upper surface support bar.

[Claim 8] The highly elastic diaphragm membrane filter plate according to claim 1, characterized in that: the elastic press filter membrane is located at a certain distance between the lowest plane near the boss and the welding plane, the minimum distance To be greater than 0.5mm, the maximum distance does not exceed 5mm

[Claim 9] The highly elastic membrane diaphragm filter plate according to claim 1, characterized in that: the inner circumference of the first circle of the elastic press filter membrane has a certain inclination angle, greater than 3° and less than 30° The outer surface of a circle is parallel to the inner surface of the first circle or has a small angle, the angle of the angle is not more than 5

[Claim 10] The highly elastic diaphragm membrane filter plate according to claim 1, characterized in that: the junction of the elastic press filter membrane and the boss may be provided with a lock ring at the end of the elastic press filter membrane Adapted deep groove.