Strong-acid-resistant top-mounted ball valve with self-sealing valve cover structure

Abstract

The invention relates to the technical field of top-mounted ball valves, and particularly discloses a strong-acid-resistant top-mounted ball valve with a self-sealing valve cover structure, which comprises a ball valve body positioned in a valve body, the strong-acid-resistant top-mounted ball valve with the self-sealing valve cover structure comprises a connecting seat and a bottom plate, the bottom plate is connected with a connecting block and a transmission rod through a supporting rod, and the connecting block is connected with the transmission rod through the supporting rod. The transmission rod is connected with a valve cover, the valve cover is connected with a chuck through a fixing column, the ball valve is connected with a clamping plate and the chuck through a connecting plate, and the clamping plate is connected with the fixing column through a first threaded column; the ball valve has the beneficial effects that the ball valve is connected with the clamping plate and the chuck through the connecting plate, the valve rod drives the ball valve to rotate through the clamping plate and the chuck, at the moment, when the valve rod rotates, the number of connecting points of the valve rod and the ball valve is increased, the overall strength is enhanced, meanwhile, when the ball valve is pressed, the valve deck and the connecting base can be connected more tightly through the connecting plate and the supporting plate, and the service life is prolonged. And the overall self-sealing performance is high, and the valve rod is high in strength and not prone to breakage.

Description

Technical Field

[0001] The invention relates to the technical field of top-entry ball valves, in particular to a strong acid-resistant top-entry ball valve with a self-sealing valve cover structure. Background Art

[0002] Top-entry ball valves are widely used. They are easy and quick to disassemble on the pipeline, making maintenance quick and convenient. When a valve fails on the pipeline and needs to be repaired, there is no need to remove the valve from the pipeline. Instead, you only need to remove the center flange bolts and nuts, remove the bonnet and stem assembly from the valve body, and then remove the ball and seat assembly. This allows you to repair the ball and seat online, saving time. The traditional ball valve body and valve cover are both connected by bolts. Under the action of medium pressure, the bolts and valve cover of this type of valve will deform, resulting in insufficient gasket sealing pressure ratio, and then leakage. Especially under high-pressure conditions, this structure cannot meet the use requirements.

[0003] However, the currently common top-entry ball valve rotates when subjected to high pressure, which causes excessive stress on the connection between the ball valve and the valve stem, resulting in breakage. Summary of the Invention

[0004] The object of the present invention is to provide a strong acid resistant top entry ball valve with a self-sealing valve cover structure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a strong acid-resistant top-entry ball valve with a self-sealing valve cover structure, comprising a ball valve located in a valve body, the strong acid-resistant top-entry ball valve with a self-sealing valve cover structure comprising: a connecting seat and a base plate, the base plate is connected to a connecting block and a transmission rod through a support rod, the transmission rod is connected to a valve cover, the valve cover is connected to a chuck through a fixed column, the ball valve is connected to the chuck and the chuck through a connecting plate, and the chuck is connected to the fixed column through a first threaded column.

[0006] Preferably, both sides of the valve body are fixedly connected with connecting pipes, the other end of the connecting pipe and the lower end of the valve body are fixedly connected with flanges, the upper end of the valve body is fixedly connected with a connecting seat, the inner wall of the lower end of the valve body is in close contact with a support column, the lower end of the support column is fixedly connected with a flange, the flange of the support column is threadedly connected to the flange at the lower end of the valve body through fixing bolts, the upper end of the support column is fixedly connected with a sealing gasket, the inner wall of the valve body is in close contact with a ball valve, and the lower end of the ball valve is in close contact with the sealing gasket.

[0007] Preferably, a connecting plate is fixedly connected to the inner side of the upper end of the ball valve, the inner wall of the upper side of the ball valve contacts a clamping plate, the surface of the clamping plate is fixedly connected to a first threaded column, the upper end of the clamping plate is fixedly connected to a valve stem, the surface of the valve stem is slidably connected to a chuck, the connecting plate is clamped with the lower end of the chuck, and the lower side of the connecting plate contacts the surface of the clamping plate.

[0008] Preferably, the upper side of the connecting seat is in close contact with the valve cover, the inner side of the valve cover is rotatably connected to the fixed column, the inner wall of the connecting seat is in contact with the four-open ring, the side of the connecting seat is fixedly connected to the swivel seat, the inner side of the four-open ring is in close contact with the outer side of the fixed column, the upper end of the valve cover is fixedly connected to the swivel seat, and the upper side of the valve cover is in sealing contact with the pressure cover.

[0009] Preferably, the upper end of the pressure cover is sealed in contact with the base plate, the upper end of the base plate is fixedly connected to the mounting cover, the inner wall of the mounting cover is rotatably connected to a worm, one end of the worm passes through the mounting cover and is fixedly connected to a turntable, the surface of the worm is meshed with a worm wheel, and the worm wheel is fixedly connected to the upper end of the valve stem.

[0010] Preferably, the side of the base plate is fixedly connected to a swivel seat, the swivel seat is rotatably connected to a support rod, the other end of the support rod is rotatably connected to a connecting block, the lower end of the connecting block is rotatably connected to a transmission rod, and the other end of the transmission rod is rotatably connected to the swivel seat on the upper side of the valve cover.

[0011] Preferably, the surface of the connecting block is sleeved with a second threaded column, one end of the second threaded column is threadedly connected to a fastening nut, one end of the base plate is inserted with a clamping block, the rotating seat on the side of the connecting seat is rotatably connected to the first threaded column, the first threaded column is sleeved with the clamping block, and the surface of the first threaded column is threadedly connected to the fastening nut.

[0012] Preferably, the upper end of the first threaded column on the surface of the clamping plate passes through the fixing column and the valve cover in sequence, the surface of the first threaded column is threadedly connected with a fastening nut, and the upper end of the valve stem passes through the fixing column, the valve cover and the bottom plate in sequence.

[0013] Preferably, the lower end of the fixing column is in close contact with a clamping plate and a clamping disc at the same time, and a through groove is provided on the surface of the clamping plate, and the shape is the same as that of the connecting plate.

[0014] Preferably, a sliding groove is provided on the side surface of the bottom plate, and the diameter of the sliding groove is the same as that of the first threaded column.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the ball valve is connected to the clamping plate and the chuck through the connecting plate, and the valve stem drives the ball valve to rotate through the clamping plate and the chuck. At this time, when the valve stem rotates, the number of connection points between it and the ball valve increases, thereby enhancing the overall strength. At the same time, when the ball valve is under pressure, the valve cover and the connecting seat can be connected more tightly through the connecting plate and the support plate, thereby avoiding leakage. The overall self-sealing is strong and the valve stem is strong and not easy to break. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 A magnified view of the structure of the middle A area; Figure 3 This is a cross-sectional schematic diagram of the installation cover of the present invention; Figure 4 This is a front cross-sectional view of the valve body of the present invention; Figure 5 This is a schematic side sectional view of the valve body of the present invention; Figure 6 This is a schematic top view of the ball valve of the present invention; Figure 7 It is a schematic side view of the valve stem of the present invention.

[0017] In the figure: 1. Valve body; 2. Connecting pipe; 3. Flange; 4. Fixing bolt; 5. Sealing gasket; 6. Support column; 7. Ball valve; 8. Connecting seat; 9. Valve cover; 10. Turntable; 11. First threaded column; 12. Fastening nut; 13. Clamping block; 14. Support rod; 15. Transmission rod; 16. Connecting block; 17. Second threaded column; 18. Four open rings; 19. Fixing column; 20. Valve stem; 21. Worm; 22. Worm gear; 23. Mounting cover; 24. Pressure cover; 25. Connecting plate; 26. Clamping plate; 27. Chuck; 28. Base plate; 29. ​​Turntable. DETAILED DESCRIPTION

[0018] In order to clearly and completely describe the objectives and technical solutions of the present invention and make the advantages more clearly understood, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figure 1-Figure 7The present invention provides a technical solution: a strong acid resistant top-entry ball valve with a self-sealing valve cover structure, including a ball valve 7 located in a valve body 1, the strong acid resistant top-entry ball valve with a self-sealing valve cover structure includes: a connecting seat 8 and a bottom plate 28, both sides of the valve body 1 are fixedly connected with connecting pipes 2, which can be connected to other devices through the connecting pipes 2, the other end of the connecting pipe 2 and the lower end of the valve body 1 are fixedly connected with flanges 3, which are convenient for fixing. The upper end of the valve body 1 is fixedly connected with the connecting seat 8, and the inner wall of the lower end of the valve body 1 is in close contact with a support column 6, which can support the ball valve 7. The lower end of the support column 6 is fixedly connected with a flange 3, and the flange 3 of the support column 6 is threadedly connected to the flange 3 at the lower end of the valve body 1 through a fixing bolt 4. At this time, the position of the support column 6 is fixed, and then the position of the ball valve 7 is fixed. The upper end of the support column 6 is fixedly connected with a sealing gasket 5, and the connection between the ball valve 7 and the support column 6 can be sealed by the sealing gasket 5, thereby improving the sealing quality. The inner wall of the valve body 1 is in close contact with the ball valve 7, and the lower end of the ball valve 7 is in close contact with the sealing gasket 5. When the ball valve 7 rotates, the inside of the valve body 1 can be penetrated and closed.

[0020] The entire device is connected to other pipelines through the flange 3, and the overall through-state is changed by the rotation of the ball valve 7.

[0021] The upper inner side of the ball valve 7 is fixedly connected with a connecting plate 25, and the inner wall of the upper side of the ball valve 7 contacts a clamping plate 26. The surface of the clamping plate 26 is fixedly connected with a first threaded column 11, and the clamping plate 26 can be fixed to the child by the first threaded column 11. The upper end of the clamping plate 26 is fixedly connected to the valve stem 20, and the surface of the valve stem 20 is slidably connected to the clamping disc 27 by a protrusion. The connecting plate 25 is clamped with the lower end of the clamping disc 27. At this time, when the valve stem 20 rotates, the connecting plate 25 and the clamping disc 27 will rotate accordingly. The lower side of the connecting plate 25 contacts the surface of the clamping plate 26. Since the connecting plate 25 is restricted by the clamping plate 26 and the clamping disc 27, the connecting plate 25 can drive the ball valve 7 to rotate at the same time. The upper side of the connecting seat 8 is closely contacted with the valve cover 9, and the upper end of the connecting seat 8 can be sealed by the valve cover 9. The inner side of the valve cover 9 is rotatably connected with a fixing column 19. The inner wall of the connecting seat 8 contacts the four open rings 18. The four open rings 18 make the inner side of the upper end of the connecting seat 8 sealed and the overall stability maintained. The side of the connecting seat 8 is fixedly connected to the swivel seat 10. The inner side of the four open rings 18 is in close contact with the outer side of the fixed column 19. The upper end of the valve cover 9 is fixedly connected to the swivel seat 10. The upper side of the valve cover 9 is sealed and contacted with a pressure cover 24. The pressure cover 24 can be used for secondary sealing to ensure the overall tightness and provide support for the bottom plate 28. The upper end of the pressure cover 24 is rotatably connected to the bottom plate 28. The upper end of the bottom plate 28 is fixedly connected to the mounting cover 23. The inner wall of the mounting cover 23 is rotatably connected to the worm 21. The ball valve 7 can be driven to rotate by rotating the worm 21. One end of the worm 21 passes through the mounting cover 23 and is fixedly connected to a turntable 29. The worm 21 can be driven to rotate by rotating the turntable 29. The surface of the worm 21 is meshed with a worm gear 22. The worm gear 22 is fixedly connected to the upper end of the valve stem 20 and can be driven to rotate by the worm 21.

[0022] When the turntable 29 is rotated, the worm 21 starts to rotate, thereby driving the worm wheel 22 to rotate. At this time, the valve stem 20 rotates accordingly. Since the lower end of the valve stem 20 is connected to the connecting plate 25 of the ball valve 7 through the connecting clamping plate 26 and the clamping disc 27, the valve stem 20 can drive the ball valve 7 to rotate.

[0023] The side of the bottom plate 28 is fixedly connected to a swivel seat 10, and the rotation of this swivel seat 10 is connected to a support rod 14, and the other end of the support rod 14 is rotatably connected to a connecting block 16. When the support rod 14 rotates, the connecting block 16 moves accordingly, and the lower end of the connecting block 16 is rotatably connected to the transmission rod 15. The other end of the transmission rod 15 is rotatably connected to the swivel seat 10 on the upper side of the valve cover 9. At this time, by applying pressure to the connecting block 16, the support rod 14 and the transmission rod 15 can respectively apply pressure to the bottom plate 28 and the valve cover 9. The surface of the connecting block 16 is sleeved with a second threaded column 17, and one end of the second threaded column 17 is threadedly connected to a fastening nut 12. By drilling and fastening the nut 12, the bottom plate 28 and the valve cover 9 can be subjected to a downward force, thereby making the connection tighter. One end of the bottom plate 28 is plugged with a clamping block 13, and the connection strength of the first threaded column 11 can be improved by the clamping block 13. The swivel seat 10 on the side of the connecting seat 8 is rotatably connected to the first threaded column 11, and the first threaded column 11 and the clamping block The block 13 is sleeved, and the surface of the first threaded column 11 is threadedly connected with a fastening nut 12. At this time, rotating the fastening nut 12 can maintain a good sealing connection between the bottom plate 28 and the pressure cover 24. The upper end of the first threaded column 11 on the surface of the card plate 26 passes through the fixing column 19 and the valve cover 9 in turn. The surface of this first threaded column 11 is threadedly connected with a fastening nut 12. The upper end of the valve stem 20 passes through the fixing column 19, the valve cover 9 and the bottom plate 28 in turn. Through the first threaded column 11, the valve stem 20 can be rotated, and the fixing column 19 can also be rotated accordingly, thereby ensuring that the chuck 27 can be tightly contacted with the card plate 26. The lower end of the fixing column 19 is also tightly contacted with the card plate 26 and the chuck 27. A through groove is provided on the surface of the card plate 26, through which the valve stem 20 is easily disassembled, and the shape is the same as the connecting plate 25. A sliding groove is provided on the side of the bottom plate 28, and the sliding groove diameter is the same as the first threaded column 11, thereby ensuring that the first threaded column 11 can pass through the bottom plate 28 when it rotates.

[0024] During use, the bottom plate 28 and the first threaded column 11 can ensure that the upper and lower ends of the fixing column 19 are always sealed, while the support rod 14 and the transmission rod 15 can ensure that the valve cover 9 and the connecting seat 8 are in sealed contact.

[0025] In actual use, when the overall installation is completed, the worm gear 22 can be rotated by rotating the turntable 29, thereby driving the ball valve 7 to rotate through the valve stem 20. Since the valve stem 20 is indirectly connected to the ball valve 7 through the connecting plate 25 and the clamping plate 26, the connection is not easy to break and has high bearing capacity. At the same time, the overall tightness can be guaranteed by the support rod 14 and the transmission rod 15. When the valve stem 20 needs to be disassembled, the fastening nut 12 is rotated to disassemble the components on the surface of the valve stem 20. By rotating the valve stem 20, the groove on the surface of the clamping plate 26 can be aligned with the connecting plate 25, so that the valve stem 20 can be disassembled without affecting the working state of the ball valve 7.

[0026] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A strong acid resistant top entry ball valve with a self-sealing bonnet structure, comprising a ball valve (7) located within a valve body (1), characterized in that: The strong acid-resistant top-mounted ball valve with a self-sealing valve cover structure comprises: a connecting seat (8) and a base plate (28); the base plate (28) is connected to a connecting block (16) and a transmission rod (15) via a support rod (14); the transmission rod (15) is connected to a valve cover (9); the valve cover (9) is connected to a chuck (27) via a fixed column (19); the ball valve (7) is connected to a chuck (26) and the chuck (27) via a connecting plate (25); and the chuck (26) is connected to the fixed column (19) via a first threaded column (11).

2. The strong acid resistant top entry ball valve with a self-sealing bonnet structure according to claim 1, characterized in that: The valve body (1) is fixedly connected to connecting pipes (2) on both sides, and the other end of the connecting pipe (2) and the lower end of the valve body (1) are fixedly connected to flanges (3). The upper end of the valve body (1) is fixedly connected to a connecting seat (8). The inner wall of the lower end of the valve body (1) is in close contact with a support column (6). The lower end of the support column (6) is fixedly connected to the flange (3). The flange (3) of the support column (6) is threadedly connected to the flange (3) at the lower end of the valve body (1) through a fixing bolt (4). The upper end of the support column (6) is fixedly connected to a sealing gasket (5). The inner wall of the valve body (1) is in close contact with a ball valve (7). The lower end of the ball valve (7) is in close contact with the sealing gasket (5).

3. The strong acid resistant top entry ball valve with a self-sealing bonnet structure according to claim 2, characterized in that: The inner side of the upper end of the ball valve (7) is fixedly connected to a connecting plate (25), the inner wall of the upper side of the ball valve (7) contacts a clamping plate (26), the surface of the clamping plate (26) is fixedly connected to a first threaded column (11), the upper end of the clamping plate (26) is fixedly connected to a valve stem (20), the surface of the valve stem (20) is slidably connected to a chuck (27), the connecting plate (25) is clamped to the lower end of the chuck (27), and the lower side of the connecting plate (25) contacts the surface of the clamping plate (26).

4. The strong acid resistant top entry ball valve with a self-sealing bonnet structure according to claim 3, characterized in that: The upper side of the connecting seat (8) is in close contact with the valve cover (9), the inner side of the valve cover (9) is rotatably connected to the fixed column (19), the inner wall of the connecting seat (8) is in contact with the four-open ring (18), the side of the connecting seat (8) is fixedly connected to the rotating seat (10), the inner side of the four-open ring (18) is in close contact with the outer side of the fixed column (19), the upper end of the valve cover (9) is fixedly connected to the rotating seat (10), and the upper side of the valve cover (9) is in sealing contact with the pressure cover (24).

5. The strong acid resistant top entry ball valve with a self-sealing bonnet structure according to claim 4, characterized in that: The upper end of the pressure cover (24) is in sealing contact with the bottom plate (28), the upper end of the bottom plate (28) is fixedly connected to the mounting cover (23), the inner wall of the mounting cover (23) is rotatably connected to the worm (21), one end of the worm (21) passes through the mounting cover (23) and is fixedly connected to the turntable (29), the surface of the worm (21) is meshed with the worm wheel (22), and the worm wheel (22) is fixedly connected to the upper end of the valve stem (20).

6. The strong acid resistant top entry ball valve with a self-sealing bonnet structure according to claim 1, characterized in that: The side of the bottom plate (28) is fixedly connected to a swivel seat (10), and the swivel seat (10) is rotatably connected to a support rod (14). The other end of the support rod (14) is rotatably connected to a connecting block (16). The lower end of the connecting block (16) is rotatably connected to a transmission rod (15). The other end of the transmission rod (15) is rotatably connected to the swivel seat (10) on the upper side of the valve cover (9).

7. The strong acid resistant top entry ball valve with a self-sealing bonnet structure according to claim 1, characterized in that: The surface of the connecting block (16) is sleeved with a second threaded column (17), one end of the second threaded column (17) is threadedly connected to a fastening nut (12), one end of the base plate (28) is plugged with a clamping block (13), a rotating seat (10) on the side of the connecting seat (8) is rotatably connected to a first threaded column (11), the first threaded column (11) is sleeved with the clamping block (13), and the surface of the first threaded column (11) is threadedly connected to the fastening nut (12).

8. The strong acid resistant top entry ball valve with a self-sealing bonnet structure according to claim 3, characterized in that: The upper end of the first threaded column (11) on the surface of the clamping plate (26) passes through the fixed column (19) and the valve cover (9) in sequence, and the surface of the first threaded column (11) is threadedly connected with a fastening nut (12), and the upper end of the valve stem (20) passes through the fixed column (19), the valve cover (9) and the bottom plate (28) in sequence.

9. The strong acid resistant top entry ball valve with a self-sealing bonnet structure according to claim 1, characterized in that: The lower end of the fixing column (19) is in close contact with the clamping plate (26) and the chuck (27). A through groove is provided on the surface of the clamping plate (26), and the shape is the same as that of the connecting plate (25).

10. The strong acid resistant top entry ball valve with a self-sealing bonnet structure according to claim 7, characterized in that: A sliding groove is provided on the side of the bottom plate (28), and the diameter of the sliding groove is the same as that of the first threaded column (11).

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