Anti-fouling ball valve

Abstract

The utility model discloses a kind of anti-coking ball valves, belong to the technical field of ball valve. Including a kind of anti-coking ball valve, including valve body, first flange and valve ball, valve ball is installed in valve body, first flange is fixedly connected at the end of valve body, the side of valve body is equipped with inner ring groove, slidingly connected with connection sliding sleeve in inner ring groove, the side of connection sliding sleeve close to valve ball is detachably installed with the scraper of valve body sliding connection, the end of scraper away from connection sliding sleeve abuts with valve ball, two slide rail grooves are oppositely provided on connection sliding sleeve, the utility model is moved to the direction close to valve ball by connection sliding sleeve synchronous driving scraper, until scraper is re-abutting with valve ball, so that scraper can continue to clean work to valve ball, reduce the frequency of scraper damage replacement, and the adjustment of scraper does not need to disassemble valve body, more convenient and fast, while increasing the practicability of anti-coking ball valve can improve the service life of anti-coking ball valve.

Description

Technical Field

[0001] This utility model relates to an anti-coking ball valve, belonging to the field of ball valve technology. Background Technology

[0002] In the industrial production field, ball valves are an important fluid control device and are widely used in various pipeline systems to realize functions such as opening, closing and flow regulation of fluids.

[0003] Anti-coking ball valves can reduce the problem of coking on the surface of ball valves. These ball valves usually have a scraper structure in the valve body. When the valve ball rotates, the scraper can scrape off the tar or coke powder particles attached to the surface of the valve ball, thus preventing coking to a certain extent. However, in actual use, the scraper will inevitably wear down due to long-term contact and friction with the valve ball. As the wear of the scraper intensifies, the fit between the scraper and the valve ball gradually decreases, making it impossible to effectively remove the deposits on the surface of the valve ball. Therefore, it is necessary to replace the anti-coking ball valve in a timely manner. Scraper wear will significantly shorten the service life of the ball valve, thereby reducing the practicality of the anti-coking ball valve. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an anti-coking ball valve, which solves the problem in the prior art that after the scraper has been in contact and rubbing with the valve ball for a long time, the wear of the scraper increases and the fit between the scraper and the valve ball gradually decreases, making it impossible to effectively remove the deposits on the surface of the valve ball.

[0005] The technical problem to be solved by this utility model is achieved by the following technical solution: an anti-coking ball valve, including a valve body, a first flange and a valve ball, the valve ball is installed in the valve body, the first flange is fixedly connected to the end of the valve body, an inner ring groove is opened on one side of the valve body, a connecting sleeve is slidably connected in the inner ring groove, a scraper is detachably installed on the side of the connecting sleeve near the valve ball and slidably connected to the valve body, the end of the scraper away from the connecting sleeve abuts against the valve ball, two slide rail grooves are opened opposite to each other on the connecting sleeve, two sliding columns are slidably connected on the valve body and their ends are inserted into the slide rail grooves, the inner wall of the slide rail groove away from the sliding column is inclined, the sliding column abuts against the inclined surface of the slide rail groove, a fixing sleeve is fixedly connected to the outer surface of the valve body, an adjustment mechanism is provided in the fixing sleeve, the adjustment mechanism is connected to the sliding column and can adjust the depth of the sliding column inserted into the slide rail groove;

[0006] A drive mechanism is provided on the fixed sleeve, which is used to drive the adjustment mechanism to move.

[0007] The first flange is provided with an installation mechanism, which is used to install the connecting sleeve in the inner annular groove.

[0008] By adopting the above technical solution, in the initial state, the scraper abuts against the opposite sides of the valve ball. When the valve ball rotates to open and close the valve body, the scraper can remove tar or coke particles adhering to the surface of the valve ball, preventing coking on the surface of the valve ball from causing blockage. When the scraper wears down after long-term use and no longer fits the valve ball, the drive mechanism is rotated. The drive mechanism drives the adjustment mechanism to rotate. During the rotation of the adjustment mechanism, it can push the sliding column into the valve body, so that the sliding column slides into contact with the inclined surface of the slide rail groove. The sliding column pushes the connecting sleeve through the inclined surface of the slide rail groove, pushing the connecting sleeve towards the valve ball, thereby driving the scraper, which is fixedly installed with the connecting sleeve, to move towards the valve ball, so that the scraper abuts against the valve ball again, allowing the scraper to continue cleaning the valve ball and reducing the frequency of scraper damage and replacement.

[0009] The present invention is further configured such that: the drive mechanism includes a mounting box and a support shaft rotatably connected between opposite sides of the mounting box; the mounting box is fixedly connected to the fixed sleeve; a second gear and a worm gear are fixed side by side along the axial direction on the support shaft; a worm gear meshing with the worm gear is rotatably connected inside the mounting box; one end of the worm gear extends to the outside of the mounting box.

[0010] The present invention is further configured such that: the adjusting mechanism includes a first gear, an inner cavity is provided inside the fixed sleeve, the first gear is rotatably sleeved on the valve body and located inside the inner cavity, an installation groove communicating with the inside of the mounting box is provided through the fixed sleeve, a second gear is meshed with the first gear through the installation groove, the end of the sliding column extends to the inner side of the first gear, a sliding groove is provided on the inner wall of the first gear, the side wall of the sliding groove away from the sliding column is an inclined arc surface, and the end of the sliding column extends into the sliding groove and is provided with a low friction mechanism.

[0011] The present invention is further configured such that: the low friction mechanism includes a rotating support fixedly connected to the sliding column, the rotating support is provided with a rotating groove, a rotating ball is rotatably disposed in the rotating groove, and the rotating ball extends to the outside of the rotating groove and abuts against the inclined arc surface of the groove.

[0012] By adopting the above technical solution, when the valve body is opened or closed, the valve ball needs to rotate within the valve body. Initially, two scrapers abut against opposite sides of the valve ball. As the valve ball rotates to open and close the valve body, the two scrapers can remove tar or coke particles adhering to the surface of the valve ball, preventing coking and jamming. When the scrapers wear down after long-term use and no longer fit the valve ball, rotating the worm gear drives the worm wheel meshing with it to rotate. The rotation of the worm wheel synchronously drives the support shaft to rotate, which in turn drives the second gear to rotate. The second gear synchronously drives the first gear meshing with it to rotate, and the rotation of the first gear drives the sliding groove to rotate, allowing the rotating ball to slide smoothly into the sliding groove. When the slide rail rotates around the axis of the valve body, the inclined arc surface of the slide rail provides thrust to the sliding column, pushing the sliding column into the valve body. One end of the sliding column, which penetrates into the valve body, slides into the inclined surface of the slide rail groove, thereby pushing the connecting sleeve to move closer to the valve ball. Because the scraper is fixedly installed on the connecting sleeve, the connecting sleeve synchronously drives the scraper to move closer to the valve ball until the scraper re-aggregates with the valve ball, allowing the scraper to continue cleaning the valve ball, reducing the frequency of scraper damage and replacement. Furthermore, adjusting the scraper does not require disassembling the valve body, making it more convenient and quick. This improves the service life of the anti-coking ball valve and increases its practicality.

[0013] The present invention is further configured such that: the installation mechanism includes a fixing groove opened on the side of the first flange away from the valve body, a second flange is slidably connected in the fixing groove, a positioning groove is opened on the side of the second flange near the valve body and slidably connected to the connecting sleeve, and a plurality of support springs abutting against the inner wall of the inner ring groove are fixedly connected on the side of the connecting sleeve away from the second flange.

[0014] The present invention is further configured such that: a plurality of disassembly plates are fixedly provided at the connection end of the scraper and the connecting sleeve, and a second countersunk hole is provided on the disassembly plate, and a bolt with its end inserted into the connecting sleeve and threadedly connected to the connecting sleeve is provided in the countersunk hole.

[0015] By adopting the above technical solution, when the second flange is fixed in the fixing groove with bolts, the end of the connecting sleeve extending into the positioning groove abuts against the inner wall of the positioning groove on the side away from the scraper. At this time, the function of the valve ball is to support the connecting sleeve and prevent the connecting sleeve from shaking along the axial direction in the inner ring groove when the valve body is conveying fluid. By unscrewing the bolts on the second flange, the second flange can be pulled out of the fixing groove, thereby pulling the connecting sleeve and scraper out of the valve body. By unscrewing the bolts on the disassembly plate, the scraper can be removed from the connecting sleeve, which facilitates the disassembly and replacement of the scraper. The operation is convenient and simple, thereby improving the practicality of the anti-coking ball valve.

[0016] The beneficial effects of this utility model are as follows: When the scraper wears down after long-term use and no longer fits the valve ball, rotating the worm gear can drive the worm wheel meshing with it to rotate. The rotation of the worm wheel synchronously drives the support shaft to rotate, the support shaft drives the second gear to rotate, and the second gear synchronously drives the first gear meshing with it to rotate. The rotation of the first gear drives the slide groove to rotate, so that the rotating ball slides in contact with the slide groove. As the slide groove rotates around the axis of the valve body, the inclined arc surface of the slide groove provides a thrust to the sliding column, pushing the sliding column to slide into the valve body. One end of the sliding column that penetrates into the valve body slides in contact with the inclined surface of the slide rail groove, thereby pushing the connecting sleeve to move closer to the valve ball. Because the scraper is fixedly installed on the connecting sleeve, the connecting sleeve synchronously drives the scraper to move closer to the valve ball until the scraper re-fits the valve ball, so that the scraper can continue to clean the valve ball, reducing the frequency of scraper damage and replacement. Furthermore, the adjustment of the scraper does not require disassembly of the valve body, making it more convenient and quick, thereby improving the service life of the anti-coking ball valve. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the vertical cross-sectional view of the fixing sleeve of this utility model;

[0019] Figure 3 For the present utility model Figure 2 Enlarged view of point A;

[0020] Figure 4 This is a partial vertical cross-sectional view of the valve body of this utility model;

[0021] Figure 5 This is a sectional view of the vertical section of the first flange of this utility model;

[0022] Figure 6 This is a vertical cross-sectional view of the connecting sleeve and support shaft of this utility model.

[0023] In the picture:

[0024] 1. Valve body; 2. First flange; 3. Fixing sleeve; 4. Mounting box; 5. Worm gear; 6. First gear; 7. Slide groove; 8. Support shaft; 9. Second gear; 10. Mounting groove; 11. Sliding column; 12. Rotating support; 13. Rotating groove; 14. Rotating ball; 15. Connecting slide sleeve; 16. Second flange; 17. Positioning groove; 18. Scraper; 19. Disassembly plate; 20. Slide rail groove; 21. Valve ball; 22. Support spring; 23. Inner ring groove; 24. Fixing groove; 25. Second countersunk hole; 26. Worm gear. Detailed Implementation

[0025] To facilitate a clear understanding of the technical means, creative features, objectives, and effects of this utility model, the following details... Figure 1-6 As shown, this utility model is further illustrated.

[0026] like Figure 1-6 As shown, this utility model is an anti-coking ball valve, including a valve body 1, two first flanges 2, and a valve ball 21. The valve ball 21 is installed inside the valve body 1. The first flanges 2 are fixedly connected to the ends of the valve body 1. An inner annular groove 23 is provided on one side of the valve body 1. A connecting sleeve 15 is slidably connected in the inner annular groove 23. A scraper 18 that is detachably installed and slidably connected to the valve body 1 is located on the side of the connecting sleeve 15 near the valve ball 21. The side of the scraper 18 away from the connecting sleeve 15 abuts against the valve ball 21. Two slide rail grooves 20 are provided opposite to each other on the connecting sleeve 15. Two oppositely arranged and end-inserted grooves are slidably connected on the valve body 1. The sliding column 11 is inserted into the slide rail groove 20 and is slidably arranged along the radial direction of the connecting slide sleeve 15. One end of the sliding column 11 extends to the outside of the valve body 1. The inner wall of the slide rail groove 20 away from the sliding column 11 is inclined. The sliding column 11 abuts against the inclined surface of the slide rail groove 20. The inclined surface of the slide rail groove 20 is inclined from the scraper 18 to the connecting slide sleeve 15 towards the direction close to the axis of the connecting slide sleeve 15. One end of the sliding column 11 inserted into the slide rail groove 20 is hemispherical. The hemispherical shape can reduce the friction between the sliding column 11 and the slide rail groove 20. A fixing sleeve 3 is fixedly connected to the outer surface of the valve body 1.

[0027] An adjustment mechanism is provided inside the fixed sleeve 3. The adjustment mechanism is connected to the sliding column 11 and can adjust the depth of the sliding column 11 inserted into the slide rail groove 20.

[0028] The fixed sleeve 3 is equipped with a drive mechanism, which is used to drive the adjustment mechanism to move.

[0029] The first flange 2 is provided with an installation mechanism, which is used to install the connecting sleeve 15 in the inner ring groove 23.

[0030] In the initial state, the scraper 18 abuts against the opposite sides of the valve ball 21. When the valve ball 21 rotates to open and close the valve body 1, the scraper 18 can remove tar or coke particles adhering to the surface of the valve ball 21, preventing coking on the surface of the valve ball 21 and causing blockage. When the scraper 18 wears down after long-term use and no longer fits against the valve ball 21, the drive mechanism is rotated. The drive mechanism drives the adjustment mechanism to rotate. During the rotation of the adjustment mechanism, the sliding column 11 can be pushed into the valve body 1, so that the sliding column 11 slides into the inclined surface of the slide rail groove 20. The sliding column 11 pushes the connecting sleeve 15 through the inclined surface of the slide rail groove 20, pushing the connecting sleeve 15 towards the valve ball 21, thereby driving the scraper 18, which is fixedly installed with the connecting sleeve 15, to move towards the valve ball 21, so that the scraper 18 abuts against the valve ball 21 again, so that the scraper 18 can continue to clean the valve ball 21, reducing the frequency of scraper 18 damage and replacement.

[0031] In this design, two scrapers 18 are provided inside the valve body 1. The two scrapers 18 are arranged opposite each other, and both scrapers 18 abut against the valve ball 21. The attached diagram in this design mainly shows the scraper 18 on one side.

[0032] like Figure 1-4 As shown, the drive mechanism includes a mounting box 4 and a support shaft 8 rotatably connected between opposite sides of the mounting box 4. The mounting box 4 is fixedly connected to the fixed sleeve (3). A second gear 9 and a worm wheel 26 are fixedly arranged side by side along the axial direction on the support shaft 8. A worm 5 that meshes with the worm wheel 26 is rotatably connected inside the mounting box 4. One end of the worm 5 extends through the outside of the mounting box 4 and is fixedly provided with a handwheel for driving the worm 5 to rotate.

[0033] like Figure 1-6 As shown, the adjustment mechanism includes a first gear 6, and a cavity is provided inside the fixed sleeve 3. The first gear 6 is rotatably sleeved outside the valve body 1 and slidably connected inside the cavity. The fixed sleeve 3 has a through-hole mounting groove 10 that communicates with the inside of the mounting box 4. The second gear 9 is meshed with the first gear 6 through the mounting groove 10. One end of the sliding column 11 extending outside the valve body 1 is located inside the first gear 6. The inner wall of the first gear 6 has a sliding groove 7. The side wall of the sliding groove 7 away from the sliding column 11 is an inclined arc surface. The inclined arc surface of the sliding groove 7 is inclined from the sliding column 11 to the rotating support 12 towards the direction close to the axis of the connecting sliding sleeve 15. The end of the sliding column 11 located inside the first gear (6) extends into the sliding groove 7 and slides against the inclined arc surface of the sliding groove 7 through a low-friction mechanism.

[0034] like Figure 1-6As shown, the low-friction mechanism includes a rotating support 12 fixedly connected to the sliding column 11. The rotating support 12 has a rotating groove 13. A rotating ball 14 is slidably connected in the rotating groove 13 and abuts against the inclined arc surface of the sliding groove 7. The rotating support 12 wraps around the rotating ball 14 more than half of the rotating ball 14 through the rotating groove 13, so that the rotating ball 14 rolls in the rotating groove 13 without falling out of the rotating groove 13.

[0035] When the valve body 1 is opened or closed, the valve ball 21 needs to be rotated inside the valve body 1. In the initial state, the two scrapers 18 abut against the opposite sides of the valve ball 21. When the valve ball 21 rotates to open or close the valve body 1, the two scrapers 18 can remove the tar or coke particles attached to the surface of the valve ball 21, so as to avoid coking on the surface of the valve ball 21 and causing blockage.

[0036] When the scraper 18 wears down after long-term use and no longer fits the valve ball 21, rotating the worm 5 will drive the worm wheel 26 meshing with it to rotate. The rotation of the worm wheel 26 will synchronously drive the support shaft 8 to rotate, which in turn will drive the second gear 9 to rotate. The second gear 9 will synchronously drive the first gear 6 meshing with it to rotate, which will drive the slide groove 7 to rotate, so that the rotating ball 14 is slidably connected to the slide groove 7. As the slide groove 7 rotates around the axis of the valve body 1, the inclined arc surface of the slide groove 7 will exert a thrust on the sliding column 11, pushing the sliding column 11 to slide into the valve body 1 and penetrate the valve body. One end of the inner sleeve 1 is slidably connected to the inclined surface of the slide rail groove 20, thereby pushing the connecting sleeve 15 to move closer to the valve ball 21. Since the scraper 18 is fixedly installed on the connecting sleeve 15, the connecting sleeve 15 synchronously drives the scraper 18 to move closer to the valve ball 21 until the scraper 18 re-aggregates with the valve ball 21, so that the scraper 18 can continue to clean the valve ball 21, reducing the frequency of scraper 18 damage and replacement. Furthermore, the adjustment of the scraper 18 does not require disassembly of the valve body 1, making it more convenient and quick. This improves the service life of the anti-coking ball valve and increases its practicality.

[0037] By rotating the ball 14 and sliding it through the inclined arc surface of the groove 7, the wear caused by the sliding column 11 directly sliding against the groove 7 can be reduced, thereby reducing the damage frequency of the sliding column 11 and thus improving the service life of the anti-coking ball valve.

[0038] like Figure 1-6As shown, the installation mechanism includes a fixing groove 24 on the side of the first flange 2 away from the valve body 1. A second flange 16 is slidably connected in the fixing groove 24. A first countersunk hole is provided on the first flange 2. A first threaded hole is provided on the inner wall of the fixing groove 24 near the valve body 1, which is aligned with the first countersunk hole. The second flange 16 is detachably fixed in the fixing groove 24 by bolts, so that the connecting sleeve 15 cannot slide out from the inner ring groove 23. A positioning groove 17 is provided on the side of the second flange 16 near the valve body 1, which is slidably connected to the connecting sleeve 15. The end of the connecting sleeve 15 is inserted into the positioning groove 17 and abuts against the inner wall of the positioning groove 17, so that the second flange 16 restricts the axial displacement of the connecting sleeve 15. A plurality of support springs 22 are fixedly connected on the side of the connecting sleeve 15 away from the second flange 16, which abut against the inner wall of the inner ring groove 23. The extension path of the support springs 22 is consistent with the movement path of the connecting sleeve 15.

[0039] like Figure 4-6 As shown, a plurality of disassembly plates 19 are fixedly connected to the outer surface of the scraper 18. The disassembly plate 19 has a second countersunk hole 25. The connecting sleeve 15 has a second threaded hole on the side near the scraper 18. A bolt is threaded into the second threaded hole. The end of the bolt passes through the second countersunk hole 25 and is threaded into the second threaded hole to fix the scraper 18 to one side of the connecting sleeve 15, thereby fitting and fixing the scraper 18 and the connecting sleeve 15 together.

[0040] When the second flange 16 is fixed in the fixing groove 24 with bolts, the end of the connecting sleeve 15 extending into the positioning groove 17 abuts against the inner wall of the positioning groove 17 away from the scraper 18. At this time, the function of the valve ball 21 is to support the connecting sleeve 15 and prevent the connecting sleeve 15 from shaking along the axial direction in the inner ring groove 23 when the valve body 1 is conveying fluid.

[0041] By unscrewing the bolts on the second flange 16, the second flange 16 can be pulled out of the fixing groove 24, thereby pulling the connecting sleeve 15 and the scraper 18 out of the valve body 1. Then, by unscrewing the bolts on the disassembly plate 19, the scraper 18 can be removed from the connecting sleeve 15, which facilitates the disassembly and replacement of the scraper 18. The operation is convenient and simple, thereby improving the practicality of the anti-coking ball valve.

[0042] In this design, a sealing element is provided between the second flange 16 and the fixing groove 24. The sealing element is used to enhance the sealing between the second flange 16 and the fixing groove 24.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An anti-coking ball valve, comprising a valve body (1), a first flange (2), and a valve ball (21), characterized in that: The valve ball (21) is installed inside the valve body (1). The first flange (2) is fixedly connected to the end of the valve body (1). An inner annular groove (23) is provided on one side of the valve body (1). A connecting sleeve (15) is slidably connected in the inner annular groove (23). A scraper (18) that is slidably connected to the valve body (1) is detachably installed on the side of the connecting sleeve (15) near the valve ball (21). The end of the scraper (18) away from the connecting sleeve (15) abuts against the valve ball (21). Two sliding joints are provided on the connecting sleeve (15). The valve body (1) has two sliding columns (11) that are slidably connected to each other and whose ends are inserted into the slide rail groove (20). The inner wall of the slide rail groove (20) away from the sliding column (11) is inclined. The sliding column (11) abuts against the inclined surface of the slide rail groove (20). The outer surface of the valve body (1) is fixedly connected to a fixing sleeve (3). An adjustment mechanism is provided in the fixing sleeve (3). The adjustment mechanism is connected to the sliding column (11) and can adjust the depth of the sliding column (11) inserted into the slide rail groove (20). A drive mechanism is provided on the fixed sleeve (3), which is used to drive the adjustment mechanism to move; The first flange (2) is provided with an installation mechanism for installing the connecting sleeve (15) in the inner ring groove (23).

2. The anti-coking ball valve according to claim 1, characterized in that: The drive mechanism includes a mounting box (4) and a support shaft (8) rotatably connected between opposite sides of the mounting box (4). The mounting box (4) is fixedly connected to the fixed sleeve (3). A second gear (9) and a worm wheel (26) are fixed side by side along the axial direction on the support shaft (8). A worm (5) that meshes with the worm wheel (26) is rotatably connected inside the mounting box (4). One end of the worm (5) extends to the outside of the mounting box (4).

3. The anti-coking ball valve according to claim 2, characterized in that: The adjusting mechanism includes a first gear (6), and an inner cavity is provided in the fixed sleeve (3). The first gear (6) is rotatably sleeved outside the valve body (1) and located inside the inner cavity. The fixed sleeve (3) has a through-hole mounting groove (10) that communicates with the inside of the mounting box (4). The second gear (9) is meshed with the first gear (6) through the mounting groove (10). The end of the sliding column (11) extends to the inside of the first gear (6). A sliding groove (7) is provided on the inner wall of the first gear (6). The side wall of the sliding groove (7) away from the sliding column (11) is an inclined arc surface. The end of the sliding column (11) extends into the sliding groove (7) and is provided with a low-friction mechanism.

4. The anti-coking ball valve according to claim 3, characterized in that: The low-friction mechanism includes a rotating support (12) fixedly connected to the sliding column (11). A rotating groove (13) is provided on the rotating support (12). A rotating ball (14) is rotatably arranged in the rotating groove (13). Part of the rotating ball (14) extends to the outside of the rotating groove (13) and abuts against the inclined arc surface of the sliding groove (7).

5. The anti-coking ball valve according to claim 1, characterized in that: The installation mechanism includes a fixing groove (24) on the side of the first flange (2) away from the valve body (1), a second flange (16) is slidably connected in the fixing groove (24), a positioning groove (17) is provided on the side of the second flange (16) near the valve body (1) and is slidably connected to the connecting sleeve (15), and a plurality of support springs (22) are fixedly connected on the side of the connecting sleeve (15) away from the second flange (16) and abutting against the inner wall of the inner ring groove (23).

6. The anti-coking ball valve according to claim 1, characterized in that: Multiple disassembly plates (19) are fixedly provided at the connection end of the scraper (18) and the connecting sleeve (15). A second countersunk hole (25) is provided on the disassembly plate (19). A bolt with its end inserted into the connecting sleeve (15) and threadedly connected to the connecting sleeve (15) is provided in the countersunk hole (25).

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