CN217340226U

CN217340226U - Elastic diaphragm of diaphragm filter press and filter pressing assembly

Info

Publication number: CN217340226U
Application number: CN202220289023.9U
Authority: CN
Inventors: 李勇; 崔坤祥; 王连伟; 王煦
Original assignee: Qingdao Fuxianghe Industrial Co ltd
Current assignee: Qingdao Fuxianghe Industrial Co ltd
Priority date: 2022-02-14
Filing date: 2022-02-14
Publication date: 2022-09-02
Anticipated expiration: 2032-02-14

Abstract

The utility model provides an elastic diaphragm and filter-pressing subassembly of membrane filter press. One side of the elastic membrane is provided with a sealing bulge, the other side of the elastic membrane is uniformly provided with extrusion salient points, and the elastic membrane is made of TPV. The elastic membrane of the utility model is not easy to be damaged by deformation. The high elasticity enables the elastic membrane to have better attaching degree when meeting the uneven filter cake surface, and can not generate permanent deformation, thereby ensuring the most uniform and sufficient filter cake extrusion. And provides a filter pressing assembly structure based on the elastic membrane, and realizes extrusion sealing by virtue of the high elasticity of the elastic membrane. The water content of filter cakes after filter pressing is reduced to below 60 percent.

Description

Elastic diaphragm of diaphragm filter press and filter pressing assembly

Technical Field

The utility model belongs to the technical field of the pressure filter, concretely relates to diaphragm filter press's elastic diaphragm and filter-pressing subassembly.

Background

The filter plate of general membrane filter press adopts a membrane filter plate, a box-type filter plate and two elastic diaphragms to be combined for use, wherein the box-type filter plate is of a solid structure, and the membrane filter plate and the elastic diaphragms form an internal cavity structure. The diaphragm filter plate and the two diaphragms are combined, an external medium, including water or compressed air and the like, is introduced into a chamber between the diaphragm filter plate and the diaphragms, so that the diaphragms swell to compress filter chambers formed by the diaphragm filter plate and the chamber type filter plate, and further, the diaphragm filter plate and the chamber type filter plate are better separated, and the solid content is improved. Wherein the diaphragm is main moving part, and repeated deformation makes the diaphragm take place deformation and then damages easily, and the not tight sealing between diaphragm and the diaphragm filter plate can cause outside medium to leak, and then leads to squeezing force to hang down excessively, and the diaphragm swells inadequately, increases the energy consumption, goes out mud moisture content unsatisfactory. Have the extrusion bump on the elastic diaphragm, the clearance between the extrusion bump can form filtrating outflow channel during the filter-pressing, and traditional diaphragm can appear solid particle or crystalline substance when the filtrating discharge capacity is very big and block up the condition of going out the liquid runner, leads to the flowing back not smooth, and the moisture content increases.

SUMMERY OF THE UTILITY MODEL

To the technical problem, the utility model provides a diaphragm filter press's elastic diaphragm and filter-pressing subassembly, elastic diaphragm adopt Thermoplastic elastomer (TPV) to carry out structural design to the elastic diaphragm of this material, reasonable structural design can effectively exert the physical characteristics of this material, makes the elastic diaphragm can more laminate the filter cake surface simultaneously and can not produce permanent deformation, and life has obtained the improvement when having strengthened the leakproofness.

In order to realize the purpose, the utility model adopts the following technical scheme:

the elastic diaphragm of the diaphragm filter press is provided, one side face of the elastic diaphragm is provided with a sealing bulge, the other side face of the elastic diaphragm is uniformly provided with extrusion salient points, and the elastic diaphragm is made of TPV.

Preferably, the distance between every two extrusion salient points is 6.0-10.0 mm.

Preferably, the extrusion salient point is in a truncated cone shape.

Preferably, the bottom of the elastic membrane is provided with a water outlet.

The utility model also provides a filter-pressing subassembly of membrane filter press, the filter-pressing subassembly includes elastic diaphragm, elastic diaphragm sets up between van-type filter plate and diaphragm filter plate, one side that elastic diaphragm is equipped with the extrusion bump forms the filter chamber with van-type filter plate, elastic diaphragm's sealed protruding and the recess cooperation on the diaphragm filter plate.

Preferably, both sides of the diaphragm filter plate are connected with the elastic diaphragms.

Preferably, the water outlet end of the elastic diaphragm is fixedly connected with the diaphragm filter plate through a bolt.

Compared with the prior art, the utility model discloses technological improvement and beneficial effect are:

TPV is selected as a material, and has the characteristics of excellent tensile strength, high toughness, high resilience, fatigue aging resistance and the like. The elastic membrane has better elasticity and is not easy to damage due to deformation. The high elasticity enables the elastic membrane to adjust itself without permanent deformation when encountering uneven filter cake surfaces formed during filtration or filter cakes of different bulk densities, ensuring the most even and sufficient filter cake extrusion. The sealing bulge on the back of the elastic diaphragm is matched and installed with the groove on the diaphragm filter plate, the sealing bulge deforms and is completely sealed in the groove of the diaphragm filter plate under the action of the pressing force of the box-type filter plate and the diaphragm filter plate, and the water outlet at the lower part of the elastic diaphragm is fixed and pressed by a bolt, so that the elastic diaphragm is tightly attached to the diaphragm filter plate and cannot fall off. In addition, the diameter, the structure and the position distribution of the extrusion salient points of the elastic membrane can be changed according to different requirements of separated materials, so that the maximum liquid outlet channel of the membrane can reach 6.0-10.0 mm on the premise of ensuring the filtering surface, and the liquid outlet channel is ensured to be smooth. Because the elastic membrane can be more attached to materials or filter cakes, the elastic membrane can be arranged on both sides of one diaphragm filter plate to form a filter pressing component, and even a plurality of groups of diaphragm filter plates, the elastic membranes and the box type filter plates can be connected in parallel, so that the volume of a filter cavity is greatly improved, and the working efficiency of the filter press is improved.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

FIG. 1 is a schematic view showing the overall structure of an elastic membrane of a membrane filter press;

FIG. 2 is a schematic structural view of the side B-B of the elastic membrane of the membrane filter press;

FIG. 3 is an enlarged view of the structure of part A of the elastic membrane of the membrane filter press;

FIG. 4 is a schematic view of the plane C-C of FIG. 3;

figure 5 is a schematic cross-sectional view of the overall construction of the press assembly of the membrane filter press.

Reference numbers in the figures: 1. an elastic diaphragm; 2. sealing the protrusion; 3. extruding the salient points; 4. a filter chamber; 5. extruding the cavity; 6. a box-type filter plate; 7. diaphragm filter plate.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

It should be noted that the terms "front", "back", "left", "right", "outer", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

The elastic diaphragm of the diaphragm filter press provided by the embodiment is shown in fig. 1-3, the sealing bulge 2 is arranged on the rear side surface of the elastic diaphragm 1, and the elastic diaphragm 1 can be sealed and positioned by matching the sealing bulge 2 with the groove of the diaphragm filter plate 7 through extrusion deformation. Extrusion salient points 3 are uniformly distributed on the front side surface of the elastic membrane 1, a liquid outlet channel is formed between the extrusion salient points 3, and filtrate can pass through. The extrusion salient points 3 are in a circular truncated cone shape (figures 3-4), and the height of the protrusions of the extrusion salient points 3 is adapted to the thickness of the elastic membrane 1. The elastic membrane 1 is made of TPV with excellent tensile strength, high toughness, high resilience and fatigue aging resistance.

Specifically, the sealing protrusion 2 is designed to protrude a circle at the edge of the back of the elastic membrane 1, as shown in fig. 2, sealing strips are arranged on the inner side and the outer side of the protruding part, and the cross section of the sealing strip is serrated. When the diaphragm filter plate 7 is sealed, the diaphragm filter plate is convenient to deform so as to play a role in sealing and fixing.

Fig. 3-4 are enlarged structure views of the extrusion salient points 3, a liquid outlet channel is formed between the extrusion salient points 3, the distance between every two extrusion salient points 3 is about 6.0-10 mm, and as an optimal scheme, the distance between the extrusion salient points 3 of 7.5mm is adopted in the embodiment, so that the liquid outlet channel can be ensured to be smooth.

The embodiment also provides a filter pressing assembly of a chamber type filter plate-elastic diaphragm-diaphragm filter plate-elastic diaphragm-chamber type filter plate structure as shown in fig. 5, wherein one elastic diaphragm 1 is respectively installed between a diaphragm filter plate 7 and chamber type filter plates 6 on both sides of the diaphragm filter plate, and a cavity formed between the diaphragm filter plate 7 and the elastic diaphragm 1 is an extrusion cavity 5. The one side van-type filter plate 6 that elastic diaphragm 1 was equipped with extrusion bump 3 forms the filter chamber 4 that can hold the material, and the sealed 2 of the sealed arch of the opposite side of elastic diaphragm 1 cooperates with the recess on the diaphragm filter plate 7, makes sealed protruding 2 deformation realization sealed through the extrusion between van-type filter plate 6 and the diaphragm filter plate 7. The bottom of the elastic diaphragm 1 is provided with a water outlet, a hole is formed in the water outlet, and a bolt penetrates through the hole to fix the elastic diaphragm 1 on the diaphragm filter plate 7. Because the elastic membrane 1 can be more attached to materials or filter cakes, the elastic membrane 1 can be arranged on both sides of one diaphragm filter plate 7, even a plurality of groups of diaphragm filter plates, elastic membranes and box-type filter plates can be connected in parallel, the volume of the filter cavity 4 is greatly improved, and the working efficiency of the filter press is improved.

The working principle of the structure of the embodiment is as follows: the dehydration material is injected into a filter cavity 4 between a diaphragm and a box-type filter plate 6, an external medium (water or compressed air and the like) is introduced into an extrusion cavity 5 between a diaphragm filter plate 7 and an elastic diaphragm 1, so that the extrusion cavity 5 expands to extrude the elastic diaphragm 1 to deform, the dehydration material in the filter cavity 4 is compressed, filtrate is separated out and flows to a water outlet at the bottom of the elastic diaphragm 1 along a liquid outlet channel between extrusion salient points 3, filter cakes are formed after the dehydration material is subjected to filter pressing, and the water content is reduced to below 60%.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or that equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention, which is claimed.

Claims

1. An elastic diaphragm of a diaphragm filter press, which is characterized in that: one side of the elastic membrane is provided with a sealing bulge, the other side of the elastic membrane is uniformly provided with extrusion salient points, and the elastic membrane is made of TPV.

2. The elastic membrane of a membrane filter press according to claim 1, wherein the distance between every two extrusion convex points is 6.0 to 10.0 mm.

3. The elastic membrane of a membrane filter press according to claim 1, wherein the extrusion protrusions have a truncated cone shape.

4. The elastic membrane of the membrane filter press according to claim 1, wherein a water outlet is formed at the bottom of the elastic membrane.

5. A filter pressing assembly of a membrane filter press is characterized by comprising an elastic membrane sheet according to any one of claims 1 to 4, wherein the elastic membrane sheet is arranged between a box-type filter plate and a membrane filter plate, one side of the elastic membrane sheet, which is provided with extrusion convex points, forms a filter cavity with the box-type filter plate, and a sealing bulge of the elastic membrane sheet is matched with a groove on the membrane filter plate.

6. A filter-press assembly as claimed in claim 5 wherein said elastic membrane is attached to both sides of said membrane filter plate.

7. A filter press assembly as claimed in claim 5 wherein the outlet end of said flexible diaphragm is fixedly secured to said membrane filter plate by bolts.