Sealing structure for EDI membrane stack

Abstract

The utility model relates to the technical field of EDI (Electronic Data Interchange) membrane stack sealing, and discloses a sealing structure for an EDI membrane stack, which comprises an EDI membrane stack partition plate, grooves are formed in the outer edges of the two sides of the EDI membrane stack partition plate, sealing grooves are formed in the inner sides of the grooves, and bumps are mounted at the upper ends and the lower ends of the inner sides of the sealing grooves. According to the utility model, through the matching of the fixing frame and the sealing sleeve, when the two EDI membrane stack partitions are assembled, the fitting property of the two EDI membrane stack partitions is improved, and the contact area between the sealing sleeve and the EDI membrane stack partitions is increased by utilizing the butt joint between the sealing air bag and the sealing groove, so that the further sealing in the assembling process of the two EDI membrane stack partitions is further improved, and the assembling efficiency of the EDI membrane stack partitions is improved. And under the extrusion action of the two EDI membrane stack partition plates, the protruding blocks extrude the sealing air bags, movement of inert gas in the sealing air bags is promoted, the protruding blocks are driven to deform, and the connection tightness between the sealing air bags and the sealing grooves is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of EDI membrane stack sealing, and particularly relates to a sealing structure for an EDI membrane stack. Background Technique

[0002] EDI, also known as continuous electrodeionization technology, combines electrodialysis and ion exchange technologies in an EDI membrane stack. By applying high voltage at both ends of the electrodes, charged ions in water are moved, and ion exchange resins and selective resin membranes are used to accelerate ion movement removal to achieve the function of pure water production.

[0003] The EDI membrane stack is mainly composed of multiple separators, exchange membranes, electrode plates, and end plates on both sides. The assembly between the existing EDI membrane stack separators is mainly achieved by fitting and connecting the positioning holes on their outer edges with the positioning rods and screw sleeves on the end plates. Since the mutual extrusion between the separators is mainly realized by screwing the screw sleeves, the sealing structure is relatively simple, which is not conducive to the long-term use of the EDI membrane stack, so there is certain room for improvement. Content of the Utility Model

[0004] The purpose of the utility model is to provide a sealing structure for an EDI membrane stack to solve the problem that the existing EDI membrane stack has general sealing tightness and is not conducive to long-term use as mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: A sealing structure for an EDI membrane stack includes an EDI membrane stack separator. Grooves are provided on both outer edges of the EDI membrane stack separator, and sealing grooves are provided inside the grooves. Convex blocks are installed at both upper and lower ends inside the sealing grooves. An inner sealing mechanism is arranged inside one of the grooves to fit another EDI membrane stack separator. The inner sealing mechanism includes a fixed frame, and a sealing sleeve is arranged inside the fixed frame. One side of the fixed frame is attached to the inside of one of the grooves. Sealing airbags are installed at both left and right ends of the sealing sleeve, and the outside of one of the sealing airbags is attached to the corresponding sealing groove. Inert gas is filled inside the sealing airbag.

[0006] Preferably, the cross-section of the groove is a rectangular ring structure, and the cross-section shape of the fixed frame is adapted to the cross-section shape of the groove.

[0007] Preferably, there are two groups of convex blocks, and each group has two convex blocks. The convex blocks are symmetrically distributed up and down on the EDI membrane stack separator. By assembling the two EDI membrane stack separators left and right, the convex blocks squeeze the sealing airbag, promoting the deformation of the sealing airbag, and making the outside of the sealing airbag closely fit the inside of the sealing groove.

[0008] Preferably, an outer sealing mechanism is arranged outside the inner sealing mechanism. The outer sealing mechanism includes a side blocking frame installed outside the fixed frame. Sealing rings are installed at both the left and right ends of the side blocking frame. Magnetic strips are embedded in the four sides on the outside of the sealing ring. Friction strips are evenly arranged on the inner side of the sealing ring, and the inner sides of the friction strips are in contact with the outer sides of the EDI membrane stack partition plates.

[0009] Preferably, the cross-section of the side blocking frame and the fixed frame forms a T-shaped structure, and the width of the side blocking frame is less than half of the thickness of the EDI membrane stack partition plate.

[0010] Preferably, there are two magnetic strips, and each group has four magnetic strips. The magnetic strips generate an attractive force on the EDI membrane stack partition plate.

[0011] Preferably, the friction strips are strip-shaped, and the cross-section of the friction strips is a right-angled triangle, with the inclined surface facing outward.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] (1) Through the cooperation of the fixed frame and the sealing sleeve, when assembling two EDI membrane stack partition plates, the fitting performance between the two is improved. By using the docking between the sealing airbag and the sealing groove, the contact area between the sealing sleeve and the EDI membrane stack partition plate is increased, so as to further improve the further sealing during the assembly of the two EDI membrane stack partition plates. Under the extrusion of the two EDI membrane stack partition plates, the convex block squeezes the sealing airbag, promoting the movement of the inert gas in the sealing airbag and driving the deformation of the convex block, further improving the connection tightness between the sealing airbag and the sealing groove;

[0014] (2) Through the action of the side blocking frame, it is convenient to further block the connection gap between the two EDI membrane stack partition plates to improve its outer sealing effect. Under the action of the magnetic strip, the sealing ring, etc., it promotes the fitting performance of the sealing ring on the outer side of the EDI membrane stack partition plate, thereby further improving its sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic side-sectional structure view of the present utility model;

[0017] Figure 2 It is of the present utility model Figure 1 Schematic view of the structure at A in

[0018] Figure 3 This is a three-dimensional structural schematic diagram of the partition plate of the EDI membrane stack of the present utility model;

[0019] Figure 4 This is a three-dimensional structural schematic diagram of the side retaining frame of the present utility model;

[0020] Figure 5 This is a three-dimensional structural schematic diagram of the distribution of the sealing airbags of the present utility model.

[0021] Explanation of the reference numerals in the figure: 1, partition plate of the EDI membrane stack; 2, groove; 3, sealing groove; 4, convex block; 5, fixed frame; 6, sealing sleeve; 7, sealing airbag; 8, side retaining frame; 9, sealing ring; 10, magnetic strip; 11, friction strip. Specific embodiments

[0022] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1 - 5 , an embodiment provided by the present utility model: a sealing structure for an EDI membrane stack, including a partition plate 1 of the EDI membrane stack, and grooves 2 are provided on the outer edges of both sides of the partition plate 1 of the EDI membrane stack;

[0024] The cross-section of the groove 2 is a rectangular ring structure, and the cross-sectional shape of the fixed frame 5 is mutually adapted to the cross-sectional shape of the groove 2;

[0025] And sealing grooves 3 are provided on the inner sides of the grooves 2, and convex blocks 4 are installed at both the upper and lower ends inside the sealing grooves 3;

[0026] There are two groups of convex blocks 4, and each group has two. The convex blocks 4 are symmetrically distributed up and down on the partition plate 1 of the EDI membrane stack. By assembling the left and right between two partition plates 1 of the EDI membrane stack, the convex blocks 4 squeeze the sealing airbag 7, promoting the deformation of the sealing airbag 7, and making the outside of the sealing airbag 7 closely fit with the inside of the sealing groove 3;

[0027] Specifically, as Figure 1 , Figure 3 and Figure 5As shown in the figure, during use, the function of the sealing airbag 7 is utilized to further increase the contact area between the sealing sleeve 6 and the groove 2. Moreover, by means of the lateral extrusion of the bump 4, the deformation of the sealing airbag 7 is promoted to improve the fitting property between the sealing airbag 7 and the sealing groove 3, ensuring the sealing effect.

[0028] An inner sealing mechanism is arranged inside one side of the groove 2 to fit with the other EDI membrane stack partition 1.

[0029] An outer sealing mechanism is arranged outside the inner sealing mechanism. The outer sealing mechanism includes a side blocking frame 8 installed outside the fixed frame 5. Sealing rings 9 are installed at both the left and right ends of the side blocking frame 8. Magnetic strips 10 are embedded in the outer four sides of the sealing ring 9. Friction strips 11 are evenly arranged on the inner side of the sealing ring 9, and the inner side of the friction strips 11 abuts against the outer side of the EDI membrane stack partition 1.

[0030] The cross-section of the side blocking frame 8 and the fixed frame 5 forms a T-shaped structure, and the width of the side blocking frame 8 is less than half of the thickness of the EDI membrane stack partition 1.

[0031] There are two magnetic strips 10, and each group has four. The magnetic strips 10 generate an attractive force on the EDI membrane stack partition 1.

[0032] The friction strips 11 are in strip shape, and the cross-section of the friction strips 11 is a right triangle with the inclined surface facing the outside.

[0033] The inner sealing mechanism includes a fixed frame 5. A sealing sleeve 6 is arranged inside the fixed frame 5. One side of the fixed frame 5 fits with the inside of one side of the groove 2. Sealing airbags 7 are installed at both the left and right ends of the sealing sleeve 6. The outside of one side of the sealing airbag 7 fits into the corresponding sealing groove 3. The inside of the sealing airbag 7 is filled with inert gas.

[0034] Specifically, as Figure 1 、 Figure 2 and Figure 4 shown, during use, the side blocking frame 8 is utilized to block the assembly gap, and in cooperation with the sealing ring 9, magnetic strips 10, etc., to improve its sealing effect.

[0035] Working principle: When the present utility model is in use, first, the fixed frame 5 is clamped in the groove 2, so that the sealing airbag 7 is clamped into the corresponding sealing groove 3. Then, multiple EDI membrane stack partitions 1 are assembled and connected through the positioning holes and end caps on the EDI membrane stack partitions 1, causing mutual extrusion between the multiple EDI membrane stack partitions 1. Through the extrusion force, the bump 4 extrudes the sealing airbag 7, causing the deformation of the sealing airbag 7, so that the sealing airbag 7 fits more closely to the inside of the sealing groove 3, thereby improving the tightness of the connection gap between the multiple EDI membrane stack partitions 1.

[0036] Secondly, the side baffle frame 8 is used to shield the connection gap between the EDI stack separator 1 and the fixing frame 5, and the sealing ring 9 is used to further improve the connection tightness between the side baffle frame 8 and the outer side of the EDI stack separator 1, thereby further improving the sealing effect. Due to the attraction of the magnetic strip 10 to the EDI stack separator 1, the magnetic strip 10 pushes the sealing ring 9 to squeeze towards the EDI stack separator 1, thereby promoting the contact tightness between the sealing ring 9 and the EDI stack separator 1. Under the action of the friction strip 11, it is convenient to further improve the contact friction between the sealing ring 9 and the outer side of the EDI stack separator 1, thereby improving the sealing performance.

[0037] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0038] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement it without creative efforts.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or equivalently replace some of the technical features. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sealing structure for an EDI membrane stack, including an EDI membrane stack separator (1), characterized in that: Both outer edges of the partition plate (1) of the EDI membrane stack are provided with grooves (2), and sealing grooves (3) are provided on the inner sides of the grooves (2). At the upper and lower ends of the inner side of the sealing groove (3), bumpers (4) are installed. An inner sealing mechanism is arranged inside one of the grooves (2) to fit another partition plate (1) of the EDI membrane stack. The inner sealing mechanism includes a fixed frame (5), and a sealing sleeve (6) is arranged inside the fixed frame (5). One side of the fixed frame (5) fits inside one of the grooves (2). Sealing airbags (7) are installed at both the left and right ends of the sealing sleeve (6), and the outside of one of the sealing airbags (7) fits into the corresponding sealing groove (3). The inside of the sealing airbag (7) is filled with inert gas.

2. The sealing structure for an EDI membrane stack according to claim 1, wherein: The cross-section of the groove (2) is a rectangular ring structure, and the cross-sectional shape of the fixed frame (5) is adapted to the cross-sectional shape of the groove (2).

3. A sealing structure for an EDI membrane stack according to claim 1, characterized in that: There are two groups of the bumpers (4), and each group has two. The bumpers (4) are symmetrically distributed up and down on the partition plate (1) of the EDI membrane stack. Through the left-right assembly between the two partition plates (1) of the EDI membrane stack, the bumpers (4) exert pressure on the sealing airbag (7), promoting the deformation of the sealing airbag (7) so that the outside of the sealing airbag (7) fits tightly with the inside of the sealing groove (3).

4. A sealing structure for an EDI membrane stack according to claim 1, characterized in that: An outer sealing mechanism is arranged outside the inner sealing mechanism. The outer sealing mechanism includes a side blocking frame (8) installed outside the fixed frame (5). Sealing rings (9) are installed at both the left and right ends of the side blocking frame (8). Magnetic strips (10) are embedded on the outer four sides of the sealing ring (9). Friction strips (11) are evenly arranged on the inner side of the sealing ring (9), and the inner sides of the friction strips (11) are in contact with the outer side of the partition plate (1) of the EDI membrane stack.

5. A sealing structure for an EDI membrane stack according to claim 4, characterized in that: The cross-section of the side blocking frame (8) and the fixed frame (5) forms a T-shaped structure, and the width of the side blocking frame (8) is less than half of the thickness of the partition plate (1) of the EDI membrane stack.

6. A sealing structure for an EDI membrane stack according to claim 4, characterized in that: There are two magnetic strips (10), and each group has four. The magnetic strips (10) exert an attractive force on the partition plate (1) of the EDI membrane stack.

7. A sealing structure for an EDI membrane stack according to claim 4, characterized in that: The friction strips (11) are strip-shaped, and the cross-section of the friction strips (11) is a right triangle with the inclined surface facing outward.

Images