Cavity sealing butt connection structure

Abstract

The utility model provides a cavity sealing butt connection structure which can reduce the requirements for cavity processing and has a small space occupied by the connection structure, and relates to the field of sealing connection technology. The cavity sealing butt connection structure includes a connecting plate A, a connecting plate B, a pressing plate A, a pressing plate B, a flexible sealing pad and a pressing plate C, all of which are provided with a feeding hole to form a ring structure; the connecting plate A is sealed and butted with the docking interface of the cavity A; the connecting plate B is sealed and butted with the docking interface of the cavity B; the pressing plate A is arranged in the feeding hole of the connecting plate B, and a gap is left between the inner wall of the connecting plate B and the outer wall of the pressing plate A to form a clearance cavity, and the pressing plate A is sealed and butted with the feeding hole of the connecting plate A; the flexible sealing pad is arranged on the clearance cavity through the pressing plate B connected to the connecting plate B and the sealing cover of the pressing plate C connected to the pressing plate A. The utility model reduces the manufacturing cost of the equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing connection, in particular to a cavity sealing butt connection structure. Background Art

[0002] With the development of industrial modernization in the field of lithium-ion new energy, there are more and more vacuum strip processing equipment. In order to facilitate the flow of strips between different sealed cavities, it is necessary to seal and connect two or more sealed cavities in series. For example, a pole piece strip drying device disclosed in a Chinese patent with publication number CN216644738U. Cavity sealing connection is an indispensable structure in vacuum strip processing equipment.

[0003] One of the existing cavity sealing series connections is to directly connect the side panel openings of the two cavities together, and set an O-ring between the side panels of the two cavities. This connection and sealing method has high requirements for the vertical tolerance processing of the side panels of the cavity, and the sealing effect is not good. For cavities with side panels greater than 2 meters in length, width and height, the processing difficulty coefficient and processing cost will be relatively high, and the processing difficulty coefficient and cost will increase multiplied with each additional meter. The more cavities are connected, the cumulative error will also increase, and it is not suitable for sealing connections of more than 4 cavities. Another sealing connection method is to set a corrugated compensator at the butt connection of the two cavities to compensate for the processing error, but the corrugated compensator occupies a large space. Considering the need for later maintenance, the space between the two cavities must be at least 500mm. This connection method not only wastes space resources, but also causes the roller distance between the two cavities to be too large for easily broken strips, at least greater than 500mm, which can easily lead to strip breakage. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a cavity sealing butt connection structure which can reduce the cavity processing requirements and has a small space occupied by the connection structure.

[0005] The technical solution adopted by the utility model to solve the technical problem is: a cavity sealing butt connection structure, which is used for sealing butt connection of cavity A and cavity B, including a connecting plate A, a connecting plate B, a pressing plate A, a pressing plate B, a flexible sealing pad and a pressing plate C, all of which are provided with material passing holes to form a ring structure;

[0006] The connecting plate A is sealed and docked with the docking interface of the cavity A and is fixed on the cavity A;

[0007] The diameter of the material passing hole of the connecting plate B is smaller than the diameter of the docking interface of the cavity B. The connecting plate B is sealed and docked with the docking interface of the cavity B and is fixed on the cavity B.

[0008] The pressing plate A is arranged in the feeding hole of the connecting plate B, and a gap is left between the inner wall of the connecting plate B and the outer wall of the pressing plate A to form a clearance cavity. The pressing plate A is sealed and connected to the feeding hole of the connecting plate A and is fixed on the connecting plate A;

[0009] The flexible sealing pad is arranged in the docking interface of the cavity B, and the flexible sealing pad is arranged on the clearance cavity through the pressing plate B connected to the connecting plate B and the pressing plate C connected to the pressing plate A.

[0010] Furthermore, the pressing plate B is connected to the connecting plate B by bolts, and the pressing plate C is connected to the pressing plate A by bolts.

[0011] Furthermore, a limit block for controlling the compression amount of the flexible sealing pad is provided between the connecting plate B and the pressing plate B and between the pressing plate A and the pressing plate C.

[0012] Furthermore, the connection plate A and the cavity A are fully butt-jointed at their butt interfaces, and the connection plate B and the cavity B are fully butt-jointed at their butt interfaces.

[0013] Furthermore, the pressing plate A is fixed to the connecting plate A by screws, and a sealing ring is provided between the pressing plate A and the connecting plate A.

[0014] Furthermore, the flexible sealing pad is a rubber pad.

[0015] The beneficial effects of the utility model are as follows: the cavity sealing butt connection structure and construction method of the utility model, since a gap is left between the inner wall of the connecting plate B and the outer wall of the pressure plate A to form a clearance cavity, the clearance cavity is covered and sealed by a flexible sealing gasket, the flexible sealing gasket can not only prevent the gas from entering the cavity from between the connecting plate A and the connecting plate B through the clearance cavity to ensure sealing, but also can be deformed in all directions, and the clearance cavity can form a clearance space, the sealing butt connection structure has a certain deformation margin in all directions, which can not only ensure the sealing but also eliminate the position error that may exist in the cavity processing or installation, can reduce the processing and installation requirements of the cavity A and the cavity B, and reduce the equipment manufacturing cost. In addition, the above structure only needs to place the connecting plate A and the connecting plate B between the cavity A and the cavity B, the structure occupies a small space, is conducive to the passage of the strip, and has a certain adaptability to the later deformation of the cavity A and the cavity B without affecting the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 yes Figure 1 A magnified image of point A;

[0018] Figure 3 It is a structural schematic diagram of the utility model;

[0019] As shown in the figure: 1-cavity A, 2-cavity B, 3-connecting plate A, 4-connecting plate B, 5-pressing plate A, 6-allowing cavity, 7-flexible sealing pad, 8-pressing plate B, 9-pressing plate C, 10-limiting block, 11-feeding hole, 12-sealing ring. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0021] like Figures 1 to 3 As shown, the cavity sealing butt connection structure of the utility model is used for sealing butt connection of cavity A1 and cavity B2. The sealing butt connection structure comprises a connecting plate A3, a connecting plate B4, a pressing plate A5, a pressing plate B8, a flexible sealing pad 7 and a pressing plate C9, each of which is provided with a feeding hole 11 to form a ring structure; the connecting plate A3 is sealed and butt-jointed with the butt joint of the cavity A1 and fixed on the cavity A1; the aperture of the feeding hole 11 of the connecting plate B4 is smaller than the aperture of the butt joint of the cavity B2, the connecting plate B4 is sealed and butt-jointed with the butt joint of the cavity B2 and fixed on the cavity B2; the pressing plate A5, a pressing plate B8, a flexible sealing pad 7 and a pressing plate C9 are ... pressing plate B5, a pressing plate B6, a pressing plate B7, a pressing plate B8, a pressing plate B9, a pressing plate B10, a pressing plate B11, a pressing plate B12, a pressing plate B13, a pressing plate B14, a pressing plate B15, a pressing plate B16, a pressing plate B17, a pressing plate B18, a pressing plate B19, a pressing plate B21, a pressing plate B22, a pressing plate B23, a pressing plate Plate A5 is arranged in the feeding hole 11 of the connecting plate B4, and a gap is left between the inner wall of the connecting plate B4 and the outer wall of the pressing plate A5 to form a clearance cavity 6. The pressing plate A5 is sealed and docked with the feeding hole 11 of the connecting plate A3 and fixed on the connecting plate A3; the flexible sealing gasket 7 is arranged in the docking interface of the cavity B2, and the flexible sealing gasket 7 is arranged on the clearance cavity 6 through the pressing plate B8 connected to the connecting plate B4 and the pressing plate C9 connected to the pressing plate A5.

[0022] The specific installation process of the cavity sealing butt connection structure of the utility model is as follows:

[0023] Step 1: seal and connect the connecting plate A3 to the butt joint of the cavity A1 and fix it on the cavity A1;

[0024] Step 2: Sealingly dock the connecting plate B4 with the docking interface of the cavity B2 and fixing it on the cavity B2;

[0025] Step 3: Install cavity A1 and cavity B2 at the installation position, and adjust the positions of cavity A1 and cavity B2 so that the docking interfaces of the two are aligned;

[0026] Step 4: place the pressing plate A5 in the feeding hole 11 of the connecting plate B4, seal and connect the pressing plate A5 with the feeding hole 11 of the connecting plate A3, and fix it on the connecting plate A3;

[0027] Step 5: Install the flexible sealing pad 7 , the pressing plate B8 and the pressing plate C9 , and set the sealing cover of the flexible sealing pad 7 on the said clearance cavity 6 .

[0028] The cavity sealed docking connection structure of the utility model has the connection plate A3 and the docking interface of the cavity A1 sealed docking, the connection plate B4 and the docking interface of the cavity B2 sealed docking, and the pressure plate A5 and the feed hole 11 of the connection plate A3 sealed docking, so that gas will not pass between the connection plate A3 and the cavity A1, between the connection plate B4 and the cavity B2, and between the pressure plate A5 and the connection plate A3. Since there is a gap between the inner wall of the connecting plate B4 and the outer wall of the pressing plate A5 to form a clearance cavity 6, the clearance cavity 6 is covered and sealed by a flexible sealing pad 7. In addition to preventing gas from entering the cavity from between the connecting plate A3 and the connecting plate B4 through the clearance cavity 6 to ensure sealing, the flexible sealing pad 7 can also be deformed in all directions, and the clearance cavity 6 can form a clearance space. In this way, through the clearance cavity 6 and the flexible sealing pad 7, the cavity A1 can produce a certain movement in the up and down, left and right, and front and back directions relative to the cavity B2, that is, the sealed docking connection structure has a certain deformation margin in all directions, which not only ensures the sealing but also eliminates the position error that may exist in the processing or installation of the cavity, and can reduce the processing and installation requirements of the cavity A1 and the cavity B2, and the vacuum pressure value of multiple connected cavities can reach a high vacuum value of 10-4Pa. The above structure only needs to place the connecting plate A3 and the connecting plate B4 between the cavity A1 and the cavity B2, and the structure occupies a small space. In addition, the above structure can also produce a certain degree of adaptive deformation when the cavity is deformed in the later stage without affecting the sealing performance of the structure.

[0029] The flexible sealing pad 7 can be made of various existing flexible sealing materials, preferably a flexible stretchable sealing material, such as a flexible rubber pad, a flexible silicone pad, etc. In the embodiment of the utility model, the flexible sealing pad 7 is a flexible silicone sealing pad.

[0030] The thickness of the flexible sealing pad 7 can be set as needed. In the present invention, when the flexible sealing pad 7 is a flexible silicone sealing pad, the thickness of the flexible sealing pad 7 is preferably 5 mm. The thickness of the flexible silicone sealing pad is 5 mm, which can ensure that when vacuuming, the bulging caused by the vacuum pressure will not affect the service life, while the deformation size of the material above 5 mm will be reduced, which is not conducive to eliminating the processing tolerance and installation deviation of the docking cavity.

[0031] The width of the clearance cavity 6, that is, the gap between the inner wall of the connecting plate B4 and the outer wall of the pressing plate A5, can be set to a suitable value according to the actual situation. In the embodiment of the utility model, the butted cavity is generally a 2-meter cube, and the welding deviation will be within 3mm. In addition to the vertical tolerance on both sides and the gap deviation of the screw holes, it is concluded that the gap between the inner wall of the connecting plate B4 and the outer wall of the pressing plate A5 is 5mm to 8mm, which is the most suitable.

[0032] The pressing plate B8 can be connected to the connecting plate B4 by welding, clamping or bolting, and the pressing plate C9 can also be connected to the pressing plate A5 by the same method as above. In the embodiment of the utility model, in order to facilitate the replacement of the flexible sealing gasket 7, preferably, the pressing plate B8 is bolted to the connecting plate B4, and the pressing plate C9 is bolted to the pressing plate A5.

[0033] In order to prevent the flexible sealing pad 7 from being over-deformed and crushed when installing the flexible sealing pad 7, a limit block 10 for controlling the compression amount of the flexible sealing pad 7 is provided between the connecting plate B4 and the pressing plate B8 and between the pressing plate A5 and the pressing plate C9. Considering the sealing performance, it is best that the thickness of the limit block is 80% of the thickness of the flexible sealing pad 7.

[0034] The docking interface between the connecting plate A3 and the cavity A1 can be sealed and docked by a sealing ring, and the connecting plate A3 can be fixed and docked with the cavity A1 by spot welding, full welding, bolt connection, etc. The connecting plate B4 and the cavity B2 can also adopt the same method as above, which will not be elaborated in detail. In the present utility model, the connecting plate A3 is fully welded and docked with the docking interface of the cavity A1, so as to achieve sealed docking with the docking interface of the cavity A1 and be fixed on the cavity A1, and the connecting plate B4 is fully welded and docked with the docking interface of the cavity B2, so as to achieve sealed docking with the docking interface of the cavity B2 and be fixed on the cavity B2. The connecting plate B4 and the connecting plate A3 are fixed by full welding, which is conducive to controlling the thickness of the connecting plate B4 and the connecting plate A3, which is conducive to reducing the occupied space of the structure, and is also convenient when installing the connecting plate. When adjusting the position of the connecting plate according to the processing and assembly errors of the cavity, it is also conducive to reducing the processing and installation requirements of the cavity A1 and the cavity B2.

[0035] The pressure plate A5 can also be fixed to the connecting plate A3 by welding, bolt connection, etc. Of course, in some embodiments, the pressure plate A5 and the connecting plate A3 are also an integral structure. In the embodiment of the utility model, the pressure plate A5 is fixed to the connecting plate A3 by screws, and a sealing ring 12 is provided between the pressure plate A5 and the connecting plate A3. A sealing ring 12 is provided between the pressure plate A5 and the connecting plate A3, that is, the pressure plate A5 is sealed and docked with the connecting plate A3 through the sealing ring. In the embodiment of the utility model, in order to better ensure the seal, a double-layer sealing ring 12 is provided between the pressure plate A5 and the connecting plate A3.

Claims

1. A cavity sealing butt connection structure, used for sealing butt connection of cavity A (1) and cavity B (2), characterized in that: It comprises a connecting plate A (3), a connecting plate B (4), a pressing plate A (5), a pressing plate B (8), a flexible sealing pad (7) and a pressing plate C (9), all of which are provided with a material passing hole (11) to form an annular structure; The connecting plate A (3) is sealed and docked with the docking interface of the cavity A (1) and is fixed on the cavity A (1); The diameter of the material passing hole (11) of the connecting plate B (4) is smaller than the diameter of the docking interface of the cavity B (2); the connecting plate B (4) is sealed and docked with the docking interface of the cavity B (2) and is fixed on the cavity B (2); The pressing plate A (5) is arranged in the material passing hole (11) of the connecting plate B (4), and a gap is left between the inner wall of the connecting plate B (4) and the outer wall of the pressing plate A (5) to form a clearance cavity (6). The pressing plate A (5) is sealed and connected to the material passing hole (11) of the connecting plate A (3), and is fixed on the connecting plate A (3); The flexible sealing pad (7) is arranged in the docking interface of the cavity B (2), and the flexible sealing pad (7) is sealed and covered on the clearance cavity (6) through a pressure plate B (8) connected to the connecting plate B (4) and a pressure plate C (9) connected to the pressure plate A (5).

2. The cavity sealing butt connection structure according to claim 1, characterized in that: The flexible sealing pad (7) is a flexible silicone sealing pad.

3. The cavity sealing butt connection structure according to claim 2, characterized in that: The thickness of the flexible sealing pad (7) is 5 mm.

4. The cavity sealing butt connection structure according to claim 1, characterized in that: The pressing plate B (8) is bolted to the connecting plate B (4), and the pressing plate C (9) is bolted to the pressing plate A (5).

5. The cavity sealing butt connection structure according to any one of claims 1 to 4, characterized in that: Limit blocks (10) for controlling the compression amount of the flexible sealing pad (7) are provided between the connecting plate B (4) and the pressing plate B (8) and between the pressing plate A (5) and the pressing plate C (9).

6. The cavity sealing butt connection structure according to claim 5, characterized in that: The thickness of the limiting block (10) is 80% of the thickness of the flexible sealing pad (7).

7. The cavity sealing butt connection structure according to claim 1, characterized in that: The connection plate A (3) and the cavity A (1) are fully welded at their butt joints, and the connection plate B (4) and the cavity B (2) are fully welded at their butt joints.

8. The cavity sealing butt connection structure according to claim 1, characterized in that: The pressing plate A (5) is fixed to the connecting plate A (3) by means of screws, and a sealing ring (12) is provided between the pressing plate A (5) and the connecting plate A (3).

9. The cavity sealing butt connection structure according to claim 8, characterized in that: A double-layer sealing ring (12) is provided between the pressing plate A (5) and the connecting plate A (3).

10. The cavity sealing butt connection structure according to claim 1, characterized in that: The gap between the inner wall of the connecting plate B (4) and the outer wall of the pressing plate A (5) is 5 mm to 8 mm.

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