CN219128872U

CN219128872U - End sealing device of ceramic membrane component with high filling area

Info

Publication number: CN219128872U
Application number: CN202223354899.6U
Authority: CN
Inventors: 徐德刊; 唐志兰; 周邢; 彭文博
Original assignee: Jiangsu Jiuwu Hi Tech Co Ltd
Current assignee: Jiangsu Jiuwu Hi Tech Co Ltd
Priority date: 2022-12-14
Filing date: 2022-12-14
Publication date: 2023-06-06
Anticipated expiration: 2032-12-14

Abstract

The application discloses an end sealing device of a ceramic membrane assembly with high filling area, which comprises a sealing gasket and a press sealing mechanism, wherein the sealing gasket is used for simultaneously contacting with the same end face of a plurality of filled ceramic membranes, the press sealing mechanism is used for mechanically press sealing the sealing gasket on the same end face of the ceramic membranes, and the ceramic membranes are positioned and assembled in the press sealing mechanism; the press seal mechanism comprises a flower disc with an axial width, mounting perforations matched with the cross section shape of the ceramic membrane component are uniformly distributed in the flower disc, the sealing gasket is positioned on one side of the flower disc and props against the end part of the ceramic membrane, and a pressing plate for pressing and deforming the sealing gasket together is arranged in a detachable matching manner with the flower disc. Compared with the prior filling and sealing mode, the stress distribution at the ceramic membrane port is more uniform, the service life of the ceramic membrane assembly can be effectively prolonged, the adopted sealing gasket material can be selected according to the liquid to be separated and filtered with different characteristics, and compared with the filling and sealing mode, the sealing and sealing mode has wider application range and wider application scene.

Description

End sealing device of ceramic membrane component with high filling area

Technical Field

The application relates to the technical field of ceramic separation membranes, in particular to an end sealing device of a ceramic membrane component with a high filling area.

Background

The inorganic ceramic membrane has the advantages of high mechanical strength, good chemical stability, high temperature resistance, microorganism resistance, high separation efficiency, long service life and the like, and is widely applied to industries such as biological medicine, food and beverage, petrochemical industry, metallurgical electronics, environmental protection water treatment and the like. At present, ceramic membrane products in the market mainly comprise small-diameter multichannel tubular ceramic membranes and flat ceramic membranes, and have the advantages of small filling area per unit volume, low separation and permeation efficiency and high cost, so that the expansion of the application field of the ceramic membranes is restricted, and the environment-friendly water treatment field is especially limited. The ceramic membrane with high filling area can solve the problems of small filling area, high cost and the like, and is a necessary direction for the development of the ceramic membrane in the future.

The existing ceramic membrane component with high filling area is mainly 2 kinds, and one kind is integrated large-diameter honeycomb ceramic, as reported in patents CN102671550B and CN114307665A, the ceramic membrane with high filling area with the configuration has the advantages of multiple preparation procedures, complex process and increased possibility of introducing defects, so that the product percent of pass is low and the industrialization degree is low. The other is combined large-diameter honeycomb ceramic, which is generally sealed by filling and sealing ends by thermoplastic or thermosetting epoxy resin or polyurethane and the like, for example, the ends of a ceramic membrane assembly are sealed by filling and sealing in patents CN113195078A and CN113200708A, and the performance of the ceramic membrane assembly can be optimized to a certain extent by modifying the filling and sealing resin, but the following problems exist:

1. stress is generated by curing and shrinking the resin, and the thermal expansion coefficient of the resin and the ceramic membrane is not matched, so that the potting resin is damaged after being subjected to thermal shock, mechanical and chemical loads in the filtering process, and material leakage is caused;

2. the ceramic membrane component is entirely scrapped due to the fact that a single membrane element is damaged and cannot be detached and replaced;

3. the potting resin has the problems that the service life is shortened due to ageing caused by intolerance of sodium hypochlorite, ozone and the like in the pretreatment of membrane water treatment, so that the application scene is limited.

Disclosure of Invention

The technical problems to be solved by the utility model are as follows: when the existing ceramic membrane component with high filling amount is required to be manufactured, a glue sealing mode is generally adopted to fix the ceramic membrane tube to the component, and the sealing mode can cause the problems that the replacement of a single membrane tube and the corrosion resistance of resin glue are poor.

The technical conception adopted for solving the problems is as follows: firstly, placing a ceramic membrane in a flower disc, then placing a sealing gasket in a positioning groove of the flower disc, covering a pressing plate, enabling the pressing plate and the flower disc to extrude the sealing gasket to deform through fastening bolts and nuts, enabling the sealing gasket to protrude into a mounting perforation after extrusion deformation, and further realizing pressing and sealing operation with the end face of the ceramic membrane assembled in each mounting perforation, so that a forced sealing effect is achieved; meanwhile, the sections of the ceramic membranes are in different shapes, gaps formed between the ceramic membranes in one shape are filled by the ceramic membranes in the other shape, the purpose of fully utilizing the volume of the assembly is achieved, and the filling amount is improved.

In order to achieve the above purpose, the technical scheme adopted in the application is as follows: an end sealing device of a ceramic membrane component with high filling area is characterized in that: the sealing device comprises a sealing gasket which is used for simultaneously contacting the same end surfaces of a plurality of filled ceramic membranes, and a press sealing mechanism which is used for mechanically press sealing the sealing gasket on the same end surfaces of the ceramic membranes, wherein the ceramic membranes are positioned and assembled in the press sealing mechanism.

Preferably, the press seal mechanism comprises a disc chuck with an axial width, mounting holes matched with the cross section shape of the ceramic membrane assembly are uniformly distributed in the disc chuck, the sealing gasket is positioned on one side of the disc chuck and abuts against the end part of the ceramic membrane, and a pressing plate for pressing and deforming the sealing gasket together is arranged in detachable matching with the disc chuck.

Preferably, the ceramic membranes mounted in the same ceramic membrane module have at least a first shape and a second shape in cross-section, and the ceramic membrane having the second shape is mounted in a gap formed between the ceramic membranes having the first shape in cross-section or a gap formed between the ceramic membrane having the first shape in cross-section and the outer edge of the faceplate.

Preferably, the first shape and the second shape are selected from one or a combination of a plurality of trapezium, rectangle and circle.

Preferably, a positioning groove embedded into the sealing pad is formed in one side surface of the flower disc.

Preferably, fastening holes are uniformly distributed at corresponding positions on the flower disc and the pressing plate, and fastening bolts are arranged in the fastening holes in a penetrating manner.

The beneficial effects of this application are: the end sealing device can realize the positioning assembly of a plurality of ceramic membranes, and on the basis, the end sealing device is mechanically extruded by the sealing gasket to deform the sealing gasket, so that the forced sealing effect is achieved, the sealing performance is completely ensured, and the ceramic membrane integral assembly after end sealing is free from overflow and leakage. The end sealing device is also convenient for the disassembly and replacement of the ceramic membrane element.

Compared with the current encapsulation mode, the end sealing device has the advantages that the stress distribution at the port of the ceramic membrane is more uniform, the service life of the ceramic membrane assembly can be effectively prolonged, the adopted sealing gasket material can be selected according to the liquid to be separated and filtered with different characteristics, and compared with the encapsulation mode, the end sealing device has wider application range and wider application scene.

Drawings

Fig. 1 is an exploded view of the end seal device of the present application.

Fig. 2 is a plan view of the flower disc of the present application.

Fig. 3 is a schematic representation of the ceramic membrane positioning assembly of the present application in a faceplate.

Detailed Description

In order to enable those skilled in the art to better understand the technical solutions of the present application, the technical solutions of the present application are further described below with reference to the accompanying drawings and examples.

Referring to the figures 1-3, an end sealing device of a ceramic membrane component with high filling area comprises a sealing gasket 1 which is used for simultaneously contacting with the end surfaces of a plurality of filled ceramic membranes (shown as 3 in the figure), wherein the sealing gasket is preferably made of ethylene propylene diene monomer rubber, nitrile rubber, silica gel or fluororubber; the ceramic membrane is one or more of a multi-layer flat plate, a rectangle, a semicircle and a fan, and is made of one or more of alumina, zirconia, titania, silicon carbide, mullite, cordierite and the like. The end sealing device also comprises a press sealing mechanism for mechanically press sealing the sealing gasket 1 on the same end faces of the ceramic membranes, and the ceramic membranes are positioned and assembled in the press sealing mechanism.

When the end faces of the ceramic membranes are synchronously sealed, the ceramic membranes are firstly assembled into the press sealing mechanism in a positioning way, then the sealing gasket 1 is assembled at the end parts of the ceramic membranes, and the press sealing mechanism applies mechanical external force to deform the sealing gasket 1 so as to realize synchronous close sealing action with the end faces of the ceramic membranes.

As shown in fig. 2, the press seal mechanism includes a faceplate 2 with an axial width, and the faceplate is made of 304, 316L, 2205, 201 stainless steel, or hard plastic such as PVC, FRP, etc. Mounting holes 201 matching with the cross-sectional shape of the ceramic membrane component are uniformly distributed in the flower disc 2, and are determined according to the shape, the number and the layout of the ceramic membranes, as shown in a semicircular hole or rectangular hole structure in fig. 2, the mounting holes 201 leave a certain mounting allowance for the ceramic membranes so as to ensure that the sufficient deformation amount is ensured when the sealing gasket 1 is compressed, and the allowance is preferably more than 2mm. The ceramic membranes are sequentially positioned and assembled in the corresponding mounting holes 201, so that the mutual ceramic membranes maintain a certain distance gap, and the assembly precision and the later filtering effect are improved.

After the ceramic films are positioned and assembled in sequence in the corresponding mounting holes 201, the sealing gasket 1 is abutted against the end portions of the ceramic films, and the end faces of all the ceramic films are covered. As shown in figure 1, a pressing plate 4 for pressing and deforming the sealing gasket 1 together is arranged in a detachable matching manner with the flower disc 2, the thickness is 5-15mm, the materials are 304, 316L, 2205, 201 stainless steel, PVC, FRP and other hard plastics, after the pressing plate 4 is assembled with the flower disc 2, the sealing gasket 1 can be pressed together, ceramic films can be deformed, and the sealing gasket is tightly pressed on the end face of each ceramic film, so that the forced sealing effect is achieved.

In order to realize positioning of the sealing gasket 1, as shown in fig. 2, a positioning groove 202 embedded in the sealing gasket 1 is formed on one side surface of the faceplate 2, and the sealing gasket 1 can be positioned in the positioning groove 202 to realize relative positioning with a plurality of ceramic membranes, and further complete coverage and later press sealing effect of all the ceramic membranes are realized. The middle part of the membrane component is sequentially provided with ceramic membrane elements with rectangular cross sections, a certain space is formed between the ceramic membrane elements and the outer edge of the flower disc 4, and the ceramic membrane elements which are approximately trapezoidal can be arranged in the gap of the part, so that the space of the part is fully utilized, and the filling quantity is improved; similarly, as shown in fig. 3, the ceramic membrane elements have different shapes, the edges are matched with the outer edges of the flower disc, and the gaps between the ceramic membrane sections with longer middle parts and the flower disc are filled with other ceramic membrane sections with shorter middle parts, so that the effect of improving the filling density is also realized.

In order to realize the mechanical press-sealing effect of the sealing gasket 1 and seal the end face of the ceramic membrane, as shown in fig. 2, fastening holes 203 are uniformly distributed at corresponding positions on the flower disc 2 and the pressing plate 4, and fastening bolts 5 are penetrated in the fastening holes 203, wherein the number and the direction of the fastening bolts are determined according to the flower disc 2, and the number is 4-8, and the specification is M4-M12. After the gasket 1 is embedded and assembled into the positioning groove 202 on one side of the faceplate 2, the pressing plate is attached to the outer surface of the gasket 1, the faceplate 2 and the pressing plate 4 are pressed by mechanical external force to deform the gasket 1 through the fastening bolts 5 (the gasket 1 is also provided with the fastening holes 203 for fastening the fastening bolts 5 after passing through the gasket 2), the gasket protrudes into the mounting holes 201 after being pressed and deformed, and then the pressing and pasting sealing operation is realized with the end surface of the ceramic film assembled in each mounting hole 201.

The ceramic membrane assembly also includes a housing, not shown, which may be a rigid plastic such as 304, 316L, 2205, 201 stainless steel, PVC, FRP, etc.

The principle of the application is as follows: firstly, a ceramic film is placed in a flower disc 2, then a sealing gasket 1 is placed in a positioning groove 202 of the flower disc 2, a pressing plate 4 is covered, the pressing plate 4 and the flower disc 2 are pressed by a fastening bolt and a nut 5 to deform the sealing gasket 1, the sealing gasket protrudes into a mounting perforation 201 after being pressed and deformed, and then pressing and pasting sealing operation with the end face of the ceramic film assembled in each mounting perforation 201 is realized, so that a forced sealing effect is achieved.

The foregoing has outlined and described the basic principles, main features and advantages of the present application. Various changes and modifications may be made to the present application without departing from the spirit and scope of the application, and such changes and modifications fall within the scope of the application as hereinafter claimed.

Claims

1. An end sealing device of a ceramic membrane component with high filling area is characterized in that: the sealing device comprises a sealing gasket (1) which is used for simultaneously contacting the same end surfaces of a plurality of filled ceramic membranes, and a press sealing mechanism which is used for mechanically press sealing the sealing gasket (1) on the same end surfaces of the ceramic membranes, wherein the ceramic membranes are positioned and assembled in the press sealing mechanism; the press seal mechanism comprises a flower disc (2) with an axial width, mounting perforations (201) matched with the cross section shape of the ceramic membrane component are uniformly distributed in the flower disc (2), the sealing gasket (1) is located on one side of the flower disc (2) and abuts against the end part of the ceramic membrane, and a press plate (4) for jointly pressing and deforming the sealing gasket (1) is arranged in detachable matching with the flower disc (2).

2. The end seal apparatus of a high packing area ceramic membrane module of claim 1, wherein: the ceramic membranes mounted in the same ceramic membrane module have at least a first shape and a second shape in cross section, and the ceramic membrane having the second shape is mounted in a gap formed between the ceramic membranes having the first shape in cross section or a gap formed between the ceramic membrane having the first shape in cross section and the outer edge of the faceplate (2).

3. The end seal apparatus of a high packing area ceramic membrane module of claim 2, wherein: the first shape and the second shape are selected from one or a combination of a plurality of trapezium, rectangle and circle.

4. The end seal apparatus of a high packing area ceramic membrane module of claim 1, wherein: a positioning groove (202) embedded into the sealing pad (1) is formed in one side surface of the flower disc (2).

5. The end seal assembly of a high packing area ceramic membrane module of claim 4, wherein: fastening holes (203) are uniformly distributed at corresponding positions on the flower disc (2) and the pressing plate (4), and fastening bolts (5) are arranged in the fastening holes (203) in a penetrating mode.

6. The end seal apparatus of a high packing area ceramic membrane module of claim 1, wherein: the thickness of the pressing plate (4) is 5-15mm, and the material is 304 stainless steel, 316L stainless steel, 2205 stainless steel, 201 stainless steel, PVC or FRP.

7. The end seal apparatus of a high packing area ceramic membrane module of claim 1, wherein: a gap is left between the perforation (201) and the ceramic membrane.

8. The end seal apparatus of a high packing area ceramic membrane module of claim 1, wherein: the gap is greater than 2mm.