Sealing connection structure of high-corrosion-resistance flange

Abstract

The utility model discloses a sealing connection structure of a flange with high corrosion resistance, which comprises a left connecting pipeline, the outer surface of the left connecting pipeline is fixedly connected with a first flange, the right surface of the first flange is provided with a sealing gasket, and the right surface of the sealing gasket is provided with a second flange and a fixing device. The fixing device comprises a fixing block, a connecting plate, a sliding rod, a limiting block, a spring, a sliding base, a fixing column, a U-shaped buckle and a handle. By arranging the left protecting cover and the right protecting cover, bolts and nuts at the flange connecting position can be protected from being affected by moisture, so that the overall service life of the flange is prolonged, additional sealing can be provided for the flange connecting position under the cooperation of the protruding ring and the inserting groove, the risk of leakage at the flange connecting position is reduced, and meanwhile the service life of the flange is prolonged. And through the arrangement of the first sliding groove, the first sliding block, the second sliding groove, the second sliding block, the fixing base and the fixing device, the left protecting cover and the right protecting cover can be rapidly mounted and dismounted, and therefore the practicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flanges, and particularly relates to a sealing connection structure of a highly corrosion-resistant flange. Background Art

[0002] A flange is a common pipe connector used to connect devices such as pipes, valves, pumps, and containers to form a closed system. Flange connection is a very reliable connection method and is widely used in various industrial fields such as petroleum, chemical industry, electric power, water treatment, and food processing.

[0003] However, most of the existing flanges on the market still have certain defects. For example, flanges are usually connected by bolts and nuts, and flanges are usually installed outdoors, resulting in the joints being easily eroded by moisture such as rainwater, thus affecting the service life of the flanges. Secondly, the joints are usually simply sealed with gaskets, and the gaskets are at risk of aging after long-term use, which in turn affects the sealing performance of the flanges and leads to leakage accidents. Content of the Utility Model

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and provide a sealing connection structure of a highly corrosion-resistant flange. By setting the left cover and the right cover, the bolts and nuts at the flange joint can be protected from moisture, thereby prolonging the overall service life of the flange. Moreover, with the cooperation of the convex ring and the slot, additional sealing can be provided for the flange joint, thereby reducing the risk of leakage at the flange joint. At the same time, through the settings of the first chute, the first slider, the second chute, the second slider, the fixed seat, and the fixing device, the left cover and the right cover can be quickly installed and disassembled, thereby improving the practicability.

[0005] The utility model also provides a sealing connection structure of a highly corrosion-resistant flange as described above, including:

[0006] A left connecting pipe, the outer surface of the left connecting pipe is fixedly connected with a first flange, the right surface of the first flange is provided with a gasket, the right surface of the gasket is provided with a second flange, the inner surface of the second flange is fixedly connected with a right connecting pipe, the inner surface of the second flange is provided with bolts, the outer surface of the bolts is threadedly connected with nuts, the outer surface of the left connecting pipe is provided with a first chute, the inner surface of the first chute is slidably connected with a first slider, the upper surface of the first slider is fixedly connected with a left cover, the outer surface of the right connecting pipe is provided with a second chute, the inner surface of the second chute is slidably connected with a second slider, the upper surface of the second slider is fixedly connected with a right cover, the left surface of the right cover is fixedly connected with a convex ring, and the outer surface of the left cover is fixedly connected with a fixed seat.

[0007] Fixing device, the fixing device includes a fixing block, a connecting plate, a sliding rod, a limiting block, a spring, a sliding seat, a fixing column, a U-shaped buckle and a handle. The upper surface of the fixing block is fixedly connected to the connecting plate. The right end of the sliding rod is fixedly connected to the limiting block. The right end of the spring is fixedly connected to the sliding seat. The outer surface of the fixing column is rotatably connected to the U-shaped buckle. The upper surface of the sliding seat is fixedly connected to the handle.

[0008] According to the sealing connection structure of a highly corrosion-resistant flange described above, a slot is provided on the right surface of the left protective cover, and the inner surface of the slot is adapted to the raised ring, which increases the sealing effect when the left protective cover and the right protective cover are connected.

[0009] According to the sealing connection structure of a highly corrosion-resistant flange described above, a clamping groove is provided on the outer surface of the fixing seat, and the inner surface of the clamping groove is adapted to the U-shaped buckle, which facilitates the installation and fixation of the left and right protective covers.

[0010] According to the sealing connection structure of a highly corrosion-resistant flange described above, the outer surface of the left connecting pipe contacts the left protective cover, and the right surface of the left protective cover contacts the right protective cover.

[0011] According to the sealing connection structure of a highly corrosion-resistant flange described above, the outer surface of the right connecting pipe contacts the right protective cover, and the outer surface of the right protective cover is fixedly connected to the fixing block.

[0012] According to the sealing connection structure of a highly corrosion-resistant flange described above, the right surface of the fixing seat contacts the fixing block, and the number of the fixing devices is two and they are distributed left and right.

[0013] According to the sealing connection structure of a highly corrosion-resistant flange described above, the right surface of the connecting plate is fixedly connected to the sliding rod, and the outer surface of the sliding rod is slidably connected to the sliding seat.

[0014] According to the sealing connection structure of a highly corrosion-resistant flange described above, the outer surface of the sliding seat is fixedly connected to the fixing column, and the left end of the spring is fixedly connected to the connecting plate.

[0015] Additional aspects and advantages of the present utility model will be given in part in the following description, will become apparent in part from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following further illustrates the present utility model in conjunction with the drawings and embodiments;

[0017] Figure 1 It is a schematic diagram of the overall structure of a sealing connection structure of a highly corrosion-resistant flange of the present utility model;

[0018] Figure 2 ForFigure 1 Schematic enlarged view of the structure at A in the middle;

[0019] Figure 3 Partial structural schematic diagram of the sealing connection structure of a highly corrosion-resistant flange of the present utility model;

[0020] Figure 4 Partial structural exploded view of the sealing connection structure of a highly corrosion-resistant flange of the present utility model.

[0021] Legend description:

[0022] 1. Left connecting pipe; 2. First flange; 3. Sealing gasket; 4. Second flange; 5. Right connecting pipe; 6. Bolt; 7. Nut; 8. First chute; 9. First slider; 10. Left cover; 11. Second chute; 12. Second slider; 13. Right cover; 14. Raised ring; 15. Fixed seat; 16. Fixing device; 17. Fixed block; 18. Connecting plate; 19. Slide bar; 20. Limiting block; 21. Spring; 22. Sliding seat; 23. Fixed column; 24. U-shaped buckle; 25. Handle; 26. Slot; 27. Card slot. Detailed implementation manners

[0023] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The role of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be understood as a limitation on the protection scope of the present utility model.

[0024] Refer to Figures 1-4, in an embodiment of the present utility model, a sealing connection structure of a highly corrosion-resistant flange includes: a left connecting pipe 1, a first flange 2 is fixedly connected to the outer surface of the left connecting pipe 1, a sealing gasket 3 is arranged on the right surface of the first flange 2, a second flange 4 is arranged on the right surface of the sealing gasket 3, a right connecting pipe 5 is fixedly connected to the inner surface of the second flange 4, a bolt 6 is arranged on the inner surface of the second flange 4, a nut 7 is threadedly connected to the outer surface of the bolt 6, a first chute 8 is arranged on the outer surface of the left connecting pipe 1, a first slider 9 is slidably connected to the inner surface of the first chute 8, a left protective cover 10 is fixedly connected to the upper surface of the first slider 9, a second chute 11 is arranged on the outer surface of the right connecting pipe 5, a second slider 12 is slidably connected to the inner surface of the second chute 11, a right protective cover 13 is fixedly connected to the upper surface of the second slider 12, a protruding ring 14 is fixedly connected to the left surface of the right protective cover 13, a fixing seat 15 is fixedly connected to the outer surface of the left protective cover 10, a slot 26 is arranged on the right surface of the left protective cover 10, and the inner surface of the slot 26 is adapted to the protruding ring 14, a clamping groove 27 is arranged on the outer surface of the fixing seat 15, the outer surface of the left connecting pipe 1 is in contact with the left protective cover 10, the right surface of the left protective cover 10 is in contact with the right protective cover 13, and the outer surface of the right connecting pipe 5 is in contact with the right protective cover 13.

[0025] A fixing device 16, the fixing device 16 includes a fixing block 17, a connecting plate 18, a sliding rod 19, a limiting block 20, a spring 21, a sliding seat 22, a fixing column 23, a U-shaped buckle 24 and a handle 25. The upper surface of the fixing block 17 is fixedly connected to the connecting plate 18. The right end of the sliding rod 19 is fixedly connected to the limiting block 20. The right end of the spring 21 is fixedly connected to the sliding seat 22. The outer surface of the fixing column 23 is rotatably connected to the U-shaped buckle 24. The upper surface of the sliding seat 22 is fixedly connected to the handle 25. The inner surface of the clamping groove 27 is adapted to the U-shaped buckle 24. The outer surface of the right protective cover 13 is fixedly connected to the fixing block 17. The right surface of the fixing seat 15 is in contact with the fixing block 17. The number of the fixing devices 16 is two and they are distributed left and right. The right surface of the connecting plate 18 is fixedly connected to the sliding rod 19. The outer surface of the sliding rod 19 is slidably connected to the sliding seat 22. The outer surface of the sliding seat 22 is fixedly connected to the fixing column 23. The left end of the spring 21 is fixedly connected to the connecting plate 18.

[0026] Working principle: The left protective cover 10 is slid along the first chute 8 by using the first slider 9, and at the same time, the right protective cover 13 is slid along the second chute 11 by using the second slider 12, driving the two to approach each other, and making the convex ring 14 inserted into the slot 26. Then, the handle 25 is used to push the sliding seats 22 on the two fixing devices 16 along the sliding rods 19 respectively, so that the spring 21 is compressed, and the U-shaped buckle 24 is flipped around the fixing column 23 to make the U-shaped buckle 24 correspond to the card slot 27. Then, the handle 25 is released. Under the restoring force of the spring 21, the U-shaped buckle 24 is automatically snapped into the card slot 27 to complete the limit installation of the left protective cover 10 and the right protective cover 13, thereby isolating the overall flange connection to prevent the influence of external moisture on the bolts 6 and nuts 7, thereby improving the overall service life of the flange, and providing additional sealing for the flange connection. When the flange needs to be repaired, only the handle 25 needs to be pushed again to drive the U-shaped buckle 24 out of the inside of the card slot 27, and the limiting effect between the left protective cover 10 and the right protective cover 13 can be released. Then, the left protective cover 10 and the right protective cover 13 are moved away along the first chute 8 and the second chute 11 respectively, and the flange can be repaired, which is simple and convenient.

[0027] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art in the said technical field, various changes can also be made without departing from the purpose of the present invention.

Claims

1. A sealing connection structure of a highly corrosion-resistant flange, characterized in that: include: A left connecting pipe (1), the outer surface of the left connecting pipe (1) is fixedly connected to a first flange (2), the right surface of the first flange (2) is provided with a sealing gasket (3), the right surface of the sealing gasket (3) is provided with a second flange (4), the inner surface of the second flange (4) is fixedly connected to a right connecting pipe (5), the inner surface of the second flange (4) is provided with a bolt (6), the outer surface of the bolt (6) is threadedly connected to a nut (7), the outer surface of the left connecting pipe (1) is provided with a first slide groove (8), the second A first slider (9) is slidably connected to the inner surface of a slide groove (8), a left protective cover (10) is fixedly connected to the upper surface of the first slider (9), a second slide groove (11) is provided on the outer surface of the right connecting pipe (5), a second slider (12) is slidably connected to the inner surface of the second slide groove (11), a right protective cover (13) is fixedly connected to the upper surface of the second slider (12), a raised ring (14) is fixedly connected to the left surface of the right protective cover (13), and a fixed seat (15) is fixedly connected to the outer surface of the left protective cover (10); A fixing device (16), the fixing device (16) comprising a fixing block (17), a connecting plate (18), a sliding rod (19), a limiting block (20), a spring (21), a sliding seat (22), a fixing column (23), a U-shaped buckle (24) and a handle (25), the upper surface of the fixing block (17) being fixedly connected to the connecting plate (18), the right end of the sliding rod (19) being fixedly connected to the limiting block (20), the right end of the spring (21) being fixedly connected to the sliding seat (22), the outer surface of the fixing column (23) being rotatably connected to the U-shaped buckle (24), and the upper surface of the sliding seat (22) being fixedly connected to the handle (25).

2. The sealing connection structure of a highly corrosion-resistant flange according to claim 1, characterized in that: The right surface of the left protective cover (10) is provided with a slot (26), and the inner surface of the slot (26) is matched with the raised ring (14).

3. The sealing connection structure of a highly corrosion-resistant flange according to claim 1, characterized in that: The outer surface of the fixing seat (15) is provided with a clamping groove (27), and the inner surface of the clamping groove (27) is adapted to the U-shaped buckle (24).

4. The sealing connection structure of a highly corrosion-resistant flange according to claim 1, characterized in that: The outer surface of the left connecting pipe (1) is in contact with the left protective cover (10), and the right surface of the left protective cover (10) is in contact with the right protective cover (13).

5. The sealing connection structure of a highly corrosion-resistant flange according to claim 1, characterized in that: The outer surface of the right connecting pipe (5) is in contact with the right protective cover (13), and the outer surface of the right protective cover (13) is fixedly connected to the fixing block (17).

6. The sealing connection structure of a highly corrosion-resistant flange according to claim 1, characterized in that: The right surface of the fixing seat (15) is in contact with the fixing block (17), and the number of the fixing devices (16) is two and they are distributed on the left and right sides.

7. The sealing connection structure of a highly corrosion-resistant flange according to claim 1, characterized in that: The right surface of the connecting plate (18) is fixedly connected to the sliding rod (19), and the outer surface of the sliding rod (19) is slidably connected to the sliding seat (22).

8. The sealing connection structure of a highly corrosion-resistant flange according to claim 1, characterized in that: The outer surface of the sliding seat (22) is fixedly connected to the fixing column (23), and the left end of the spring (21) is fixedly connected to the connecting plate (18).

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