Leak-proof flange

Abstract

The utility model belongs to the technical field of flange plates, and particularly relates to a leakproof flange which comprises a first flange plate and a second flange plate, a mounting groove is formed in the right side face of the first flange plate, the inner side face of the mounting groove is in lap joint with the outer side face of the left end of a sealing plug, and the outer side face of the right end of the sealing plug is in lap joint with the inner side face of a sealing groove. The sealing groove is formed in the left side face of the second flange plate. Two positioning grooves are formed in the right side face of the first flange plate, the inner side faces of the two positioning grooves are in lap joint with the outer side faces of two positioning blocks correspondingly, and the right side faces of the two positioning blocks are fixedly connected with the left side face of a second flange plate. According to the utility model, the sealing plug and the sealing gasket are combined to achieve a dual-sealing effect, so that the service life of the sealing gasket is prolonged, and the phenomena of cracking and water leakage caused by short-time use are avoided; installation is easy, and the problem of water leakage caused by installation gaps is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of flanges, and in particular relates to a leakage-proof flange. Background Art

[0002] Flange is also called flange flange or flange. Flange is a part that connects pipes to each other. It is used to connect pipe ends. Some are also used in equipment inlets and outlets.

[0003] The existing flange connection mainly relies on placing a gasket between the flanges to improve the sealing of the flange connection. When the gasket is used for a long time, it will age, wear and crack, which will cause the flange sealing to decrease and leakage to occur. Therefore, it is difficult to ensure the sealing effect of the flange by relying solely on the gasket. In addition, the existing flange lacks installation and positioning function. During installation, the user is required to frequently and slightly rotate the flange to make the installation holes between the two flanges correspond, which affects the installation efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a leakage-proof flange, which can solve the problems mentioned in the above background technology.

[0005] The combination of sealing plug and sealing gasket can achieve the effect of double sealing, extend the service life of the sealing gasket, and avoid cracking and leakage after short-term use; it is easy to install and reduces the problem of leakage due to installation gaps.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A leakage-proof flange comprises a flange plate 1 and a flange plate 2 which are arranged opposite to each other, wherein a mounting groove is provided on the right side surface of the flange plate 1, the inner side surface of the mounting groove overlaps with the outer side surface of the left end of a sealing plug, the outer side surface of the right end of the sealing plug overlaps with the inner side surface of a sealing groove, and the sealing groove is provided on the left side surface of the flange plate 2;

[0008] The right side of the flange plate 1 is provided with two positioning grooves, the inner sides of the two positioning grooves are respectively overlapped with the outer sides of the two positioning blocks, and the right sides of the two positioning blocks are fixedly connected with the left side of the flange plate 2.

[0009] The flange plate 1 and the flange plate 2 are both provided with a plurality of connection holes, and the corresponding connection holes are connected by bolts.

[0010] The left ends of the multiple bolts overlap the left side surface of the flange plate one, the right ends of the multiple bolts are respectively threadedly connected with the multiple nuts, and the left sides of the multiple nuts overlap the right side surface of the flange plate two.

[0011] The right side surface of the flange plate 1 is fixedly connected to the left side surface of the sealing gasket, and the right side surface of the sealing gasket is overlapped with the left side surface of the flange plate 2.

[0012] The outer ring surface of the sealing plug is provided with a limit groove, the inner side surface of the limit groove overlaps with the outer side surface of the annular airbag, and the annular airbag is fixedly connected in the fixing groove.

[0013] The fixing groove is opened in the installation groove, the width of the right end of the sealing plug gradually decreases, and the right end of the sealing plug and the sealing groove are arranged in an interference fit.

[0014] The annular airbag is fixedly connected to and communicated with one end of a connecting pipe, and the other end of the connecting pipe passes through an exterior of a flange and is provided with a valve.

[0015] The technical effects achieved by the utility model are:

[0016] The utility model provides a sealing plug in the installation groove, and connects the sealing plug with the sealing groove provided on the flange plate 2, thereby utilizing the interference fit between the sealing plug and the sealing groove to further seal the connection between the flange plate 1 and the flange plate 2, and then utilizing the cooperation between the sealing plug and the sealing gasket to perform double sealing to improve the sealing effect, and can also prevent the sealing gasket from leaking after aging and cracking. At the same time, a fixing groove is provided in the installation groove, and an annular airbag is provided in the fixing groove, and the annular airbag is connected to the limiting card groove provided on the sealing plug, so that the sealing plug is limited and fixed by utilizing the connection between the annular airbag and the limiting card groove to ensure its stability, and it is also convenient for the user to disassemble and replace the sealing plug, thereby preventing its aging and cracking and ensuring the sealing effect of the sealing plug.

[0017] The utility model provides a positioning groove on the flange plate one and a positioning block on the flange plate two. When the flange plate one and the flange plate two are installed and connected, the user can plug the positioning block into the positioning groove, so that the connecting holes on the flange plate one and the flange plate two correspond to each other, thereby facilitating the user to quickly position the flange plate one and the flange plate two, improving the installation efficiency and further improving the convenience of using the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model in a front view;

[0019] Figure 2 It is a structural schematic diagram of flange 2 in the utility model;

[0020] Figure 3 It is a structural schematic diagram of the installation slot and the fixing slot in the utility model;

[0021] Figure 4It is a schematic diagram of the structure of a flange in the utility model when viewed from above;

[0022] Figure 5 It is a structural schematic diagram of the sealing plug in the utility model;

[0023] Figure 6 It is a structural schematic diagram of the annular airbag in the utility model.

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] 1. Flange one; 2. Flange two; 3. Connecting pipe; 4. Nut; 5. Bolt; 6. Connecting hole; 7. Positioning block; 8. Sealing groove; 9. Mounting groove; 10. Sealing plug; 11. Positioning groove; 12. Sealing gasket; 13. Limiting slot; 14. Annular airbag; 15. Fixing slot; 16. Valve. DETAILED DESCRIPTION

[0026] In order to make the purpose and advantages of the utility model more clear, the utility model is specifically described in combination with the following embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the utility model, and does not strictly limit the protection scope of the specific request of the utility model.

[0027] like Figure 1-5 As shown, a leakage-proof flange comprises a flange plate 1 and a flange plate 2 which are arranged opposite to each other, a mounting groove 9 is provided on the right side surface of the flange plate 1, the inner side surface of the mounting groove 9 overlaps with the outer side surface of the left end of the sealing plug 10, the outer side surface of the right end of the sealing plug 10 overlaps with the inner side surface of the sealing groove 8, and the sealing groove 8 is provided on the left side surface of the flange plate 2. By providing a sealing plug 10 in the mounting groove 9 and connecting the sealing plug 10 with the sealing groove 8 provided on the flange plate 2, the connection between the flange plate 1 and the flange plate 2 is further sealed by the interference fit between the sealing plug 10 and the sealing groove 8, and then the sealing plug 10 and the sealing gasket 12 are used to perform double sealing to improve the sealing effect, and also to prevent the sealing gasket 12 from leaking due to aging and cracking;

[0028] Two positioning grooves 11 are provided on the right side of flange 1, and the inner sides of the two positioning grooves 11 are overlapped with the outer sides of the two positioning blocks 7 respectively, and the right sides of the two positioning blocks 7 are fixedly connected to the left side of flange 2. By providing positioning grooves 11 on flange 1 and positioning blocks 7 on flange 2, when installing and connecting flange 1 and flange 2, the user can plug the positioning blocks 7 into the positioning grooves 11, so that the connecting holes 6 on flange 1 and flange 2 correspond to each other, which is convenient for the user to quickly position flange 1 and flange 2, improve the installation efficiency, and further improve the convenience of using the device.

[0029] Furthermore, a plurality of connection holes 6 are provided on flange 1 and flange 2 2 , and the corresponding connection holes 6 are connected by bolts 5 .

[0030] Furthermore, the left ends of the multiple bolts 5 overlap the left side surface of the flange 1, the right ends of the multiple bolts 5 are respectively threadedly connected to the multiple nuts 4, and the left sides of the multiple nuts 4 overlap the right side surface of the flange 2.

[0031] Furthermore, the right side surface of flange 1 is fixedly connected to the left side surface of sealing gasket 12, and the right side surface of sealing gasket 12 overlaps with the left side surface of flange 2.

[0032] Furthermore, a limiting groove 13 is provided on the outer ring surface of the sealing plug 10, and the inner side surface of the limiting groove 13 overlaps with the outer side surface of the annular airbag 14, and the annular airbag 14 is fixedly connected in the fixing groove 15. By providing a fixing groove 15 in the installation groove 9, and arranging an annular airbag 14 in the fixing groove 15, and connecting the annular airbag 14 with the limiting groove 13 provided on the sealing plug 10, the sealing plug 10 is limited and fixed by utilizing the connection between the annular airbag 14 and the limiting groove 13 to ensure its stability, and it is also convenient for the user to disassemble and replace the sealing plug 10, thereby avoiding its aging and cracking to ensure the sealing effect of the sealing plug 10.

[0033] Furthermore, the fixing groove 15 is opened in the installation groove 9 , the width of the right end of the sealing plug 10 gradually decreases, and the right end of the sealing plug 10 and the sealing groove 8 are arranged in an interference fit.

[0034] Furthermore, the annular airbag 14 is fixedly connected and communicated with one end of the connecting pipe 3, and the other end of the connecting pipe 3 passes through the outside of the flange 1 and is provided with a valve 16.

[0035] The working principle of the utility model is as follows: when installing the device, the user inserts the left end of the sealing plug 10 into the installation groove 9. When the left end of the sealing plug 10 contacts the left end of the installation groove 9, the limit slot 13 corresponds to the annular airbag 14. Then the user can connect the inflation device to the end of the connecting pipe 3, and open the valve 16 to use the connecting pipe 3 to fill the annular airbag 14 with gas. At this time, the annular airbag 14 expands and connects with the limit slot 13 to fix the position of the sealing plug 10. Then the user can take the flange 2 2 to plug the positioning block 7 with the positioning slot 11, and insert the right end of the sealing plug 10 into the sealing groove 8. At this time, the user can pass the bolt 5 through the two corresponding connecting holes 6, and connect the nut 4 with the bolt 5. Then fix the bolt 5 and rotate the nut 4 to make the flange 1 and flange 2 close to each other. At this time, the sealing plug 10 is gradually squeezed into the sealing groove 8. When the flange 1 and flange 2 are in contact, stop rotating the nut 4.

[0036] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A leak-proof flange, comprising a flange plate 1 (1) and a flange plate 2 (2) arranged opposite to each other, characterized in that: A mounting groove (9) and a sealing groove (8) are provided at corresponding positions on opposite sides of the flange plate 1 (1) and the flange plate 2 (2), and a sealing plug (10) for sealing is embedded between the mounting groove (9) and the sealing groove (8); A positioning groove (11) and a positioning block (7) are provided at corresponding positions on opposite sides of the flange plate 1 (1) and the flange plate 2 (2), and the positioning block (7) is correspondingly engaged with the positioning groove (11); The outer ring surface of the sealing plug (10) is provided with a limit slot (13), and a fixing slot (15) for accommodating an annular airbag (14) is provided in the installation slot (9) at a position corresponding to the limit slot (13), and the annular airbag (14) is embedded between the limit slot (13) and the fixing slot (15).

2. The anti-leakage flange according to claim 1, characterized in that: The flange plate 1 (1) and the flange plate 2 (2) are both provided with a plurality of connection holes (6), and the corresponding connection holes (6) are connected by bolts (5).

3. The anti-leakage flange according to claim 2, characterized in that: The right end of the bolt (5) is threadedly connected to the nut (4), and the nut (4) is located on the right side of the second flange (2).

4. The anti-leakage flange according to claim 1, characterized in that: The flange plate 1 (1) is fixedly connected to the sealing gasket (12), and the right side surface of the sealing gasket (12) overlaps the left side surface of the flange plate 2 (2).

5. The anti-leakage flange according to claim 1, characterized in that: The width of the right end of the sealing plug (10) gradually decreases, and the right end of the sealing plug (10) is interference fit with the sealing groove (8).

6. The anti-leakage flange according to claim 1, characterized in that: The annular airbag (14) is fixedly connected to and communicates with one end of the connecting pipe (3); the other end of the connecting pipe (3) passes through the outside of flange plate 1 (1) and is provided with a valve (16).

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