Stainless steel ball grinding device of ball valve

Abstract

The stainless steel ball grinding device comprises a mounting table, a placing table, a moving assembly, a pair of lifting clamping assemblies and a lifting grinding assembly, a mounting groove is formed in the mounting table, a mounting block is arranged in the middle of the mounting groove, the placing table is arranged on the mounting block, and the mounting groove is divided into a first groove and a second groove by the mounting block; the moving assembly comprises a two-way threaded rod, a pair of threaded sliding blocks and a first driving part, the two-way threaded rod is arranged in the mounting groove and rotationally connected with the mounting table, the middle of the two-way threaded rod penetrates through the mounting block and is rotationally connected with the mounting block, and one end of the two-way threaded rod penetrates through the mounting table and is connected with the first driving part; the first driving part is used for driving the bidirectional threaded rod to rotate; the lifting clamping assemblies are arranged on the two threaded sliding blocks correspondingly, the lifting grinding assembly is arranged on one side of the containing table, and the problem that an existing stainless steel ball grinding device for the ball valve cannot be suitable for stainless steel balls of various diameters when used is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valve sphere grinding processing, in particular to a stainless steel ball grinding device for a ball valve. Background Art

[0002] A ball valve is a valve used to regulate and control fluids. It has the advantages of compact structure, wide application range, relatively small size and easy use. It is not only suitable for general working media such as water, solvents, and natural gas, but also for media with harsh working conditions such as oxygen, hydrogen peroxide, methane, and ethylene. The stainless steel ball, which is the pressure-control opening and closing component in the ball valve, is one of the key parts of the ball valve with many advantages. Its processing and grinding have always been the difficulty in ball valve production.

[0003] The grinding of stainless steel balls in ball valves mainly refers to grinding a ball crown, i.e. a plane, on the stainless steel ball to facilitate subsequent processing. In the prior art, a grinding device is usually used when grinding stainless steel balls. However, the current grinding device can usually only fix a stainless steel ball of a certain size for grinding, and cannot fix stainless steel balls of various sizes for grinding. Therefore, there is a problem that it cannot be applied to stainless steel balls of various diameters.

[0004] In the utility model with application number: 201820818320.1 and publication number CN208276655U, a grinder for grinding ball valves is disclosed, including a frame, a power support plate, a gear box, a drive motor, a tailstock support plate and a tailstock clamping mechanism. However, when in use, it can only fix stainless steel balls of a certain size for grinding, and cannot fix stainless steel balls of multiple sizes for grinding. There is a problem that it cannot be applied to stainless steel balls of various diameters. Utility Model Content

[0005] Based on this, in order to solve the above problems, the utility model proposes a stainless steel ball grinding device for a ball valve, which solves the problem that the current stainless steel ball grinding device for a ball valve cannot be used for stainless steel balls of various diameters when in use.

[0006] The technical solution of the utility model is:

[0007] A stainless steel ball grinding device for a ball valve comprises a mounting platform, a placing platform, a moving assembly, a pair of lifting clamping assemblies and a lifting grinding assembly, wherein a mounting groove is arranged on the mounting platform, a mounting block is arranged in the middle of the mounting groove, the placing platform is arranged on the mounting block, and the mounting block divides the mounting groove into a first groove and a second groove;

[0008] The moving assembly includes a bidirectional threaded rod, a pair of threaded sliders and a first driving part, the bidirectional threaded rod is arranged in the mounting groove and is rotatably connected to the mounting platform, the middle part of the bidirectional threaded rod passes through the mounting block and is rotatably connected to the mounting block, a positive thread is arranged on one end of the bidirectional threaded rod located in the first groove, one threaded slider is arranged on one end of the bidirectional threaded rod located in the first groove and is threadedly connected to the bidirectional threaded rod, a reverse thread is arranged on one end of the bidirectional threaded rod located in the second groove, another threaded slider is arranged on one end of the bidirectional threaded rod located in the second groove and is threadedly connected to the bidirectional threaded rod, one end of the bidirectional threaded rod passes through the mounting platform and is connected to the first driving part, and the first driving part is used to drive the bidirectional threaded rod to rotate;

[0009] The lifting and clamping assemblies are respectively arranged on two threaded sliders and are arranged in cooperation with the placement table. The lifting and clamping assemblies are used to clamp the stainless steel balls. The lifting and grinding assemblies are arranged on one side of the placement table and are arranged in cooperation with the placement table for grinding the stainless steel balls.

[0010] Preferably, the mounting platform includes a base plate and a mounting plate, the mounting plate is arranged above the base plate and connected by a plurality of supporting legs, the mounting groove is arranged on the mounting plate, and the mounting groove passes through the mounting plate from top to bottom, both ends of the bidirectional threaded rod are respectively rotatably connected to the mounting plate, and one end of the bidirectional threaded rod passes through the mounting plate and is connected to the first driving part, and the first driving part is used to drive the bidirectional threaded rod to rotate.

[0011] Preferably, the lifting and clamping assembly comprises a clamping member and a first lifting member, the first lifting member is arranged on the threaded slider, and the clamping member is cooperatively arranged on the first lifting member.

[0012] Preferably, the clamping member includes an arc-shaped clamping plate, an arc-shaped clamping pad, a clamping shaft and a clamping seat. The clamping seat is arranged on the top of the first lifting member, one end of the clamping shaft is fixedly connected to the clamping seat, and the other end is fixedly connected to the arc-shaped clamping plate. The arc-shaped clamping pad is arranged at one end of the arc-shaped clamping plate for clamping the stainless steel ball.

[0013] Preferably, the first lifting member includes a second driving part and a pair of limiting parts, the second driving part and the two limiting parts are cooperatively arranged at the top of the threaded slider and fixedly connected to the threaded slider, the second driving part is located between the two limiting parts, and the clamping seat is arranged at the top of the second driving part and the two limiting parts, and fixedly connected to the second driving part and the two limiting parts.

[0014] Preferably, the limiting part includes a fixed plate and a sliding plate, one end of the fixed plate is fixedly connected to the threaded slider, one end of the sliding plate is fixedly connected to the clamping seat, the sliding plate is provided with a limiting slot, the fixed plate is provided with a limiting slider matched with the limiting slot, the limiting slider is slidably installed in the limiting slot, and the sliding plate and the fixed plate are slidably connected through the matching of the limiting slider and the limiting slot.

[0015] Preferably, the lifting and grinding assembly includes a second lifting member and a grinding member, the second lifting member is arranged in cooperation with the mounting table and is located on one side of the placement table, and the grinding member is arranged on the second lifting member and is located above the placement table.

[0016] Preferably, the second lifting member includes a mounting track, a rotating screw, a threaded mounting block and a third driving unit. The lower end of the mounting track passes through the mounting plate and is connected to the base plate. A sliding groove is provided above the mounting track. The rotating screw and the threaded mounting block are cooperatively arranged in the sliding groove. The threaded mounting block is sleeved on the rotating screw and is threadedly connected to the rotating screw. Both ends of the rotating screw are respectively rotatably connected to the mounting track, and one end passes through the top of the mounting track and is connected to the third driving unit. The third driving unit is used to drive the rotating screw to rotate. The grinding member is arranged on the threaded mounting block.

[0017] Preferably, the grinding part includes a mounting frame, a grinding shaft, a grinding knife and a fourth driving unit, one end of the mounting frame is fixedly connected to the threaded mounting block, the grinding shaft is arranged on the mounting frame, and one end passes through the mounting frame and is rotatably connected to the mounting frame, the fourth driving unit is arranged on the top of the mounting frame and is fixedly connected to the grinding shaft, and is used to drive the grinding shaft to rotate, the grinding knife is arranged at the end of the grinding shaft located at one end below the mounting frame, and is fixedly connected to the grinding shaft, and is used to grind stainless steel balls.

[0018] Preferably, the first driving unit, the third driving unit and the fourth driving unit are all motors, and the second driving unit is a pneumatic telescopic rod.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] When in use, the bidirectional threaded rod is driven to rotate by the first driving part, so that the two threaded sliders on the bidirectional threaded rod can approach the placement table at the same time, so that the lifting and clamping assembly on the threaded slider can clamp the stainless steel ball placed on the placement table, and the stainless steel ball is ground by the lifting and grinding assembly; the distance between the lifting and clamping assembly and the placement table can be adjusted by adjusting the distance between the threaded slider and the placement table, so as to adapt to stainless steel balls of different diameters; the problem that the stainless steel ball grinding device of the current ball valve cannot be used for stainless steel balls of various diameters when in use is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of a stainless steel ball grinding device for a ball valve described in an embodiment of the utility model. Figure 1 ;

[0022] Figure 2 It is a partial structural schematic diagram of a stainless steel ball grinding device for a ball valve described in an embodiment of the utility model;

[0023] Figure 3This is a schematic diagram of the structure of a stainless steel ball grinding device for a ball valve described in an embodiment of the utility model. Figure 2 ;

[0024] Figure 4 This is a schematic diagram of the structure of a stainless steel ball grinding device for a ball valve described in an embodiment of the utility model. Figure 3 ;

[0025] Figure 5 It is a structural schematic diagram of the lifting and clamping assembly described in the embodiment of the utility model;

[0026] Description of reference numerals:

[0027] 10-mounting table, 100-mounting slot, 101-mounting block, 102-first slot, 103-second slot, 104-bottom plate, 105-mounting plate, 106-support leg, 20-placing table, 30-moving component, 300-bidirectional threaded rod, 301-threaded slider, 302-first driving part, 40-lifting clamping component, 400-clamping member, 401-first lifting member, 402-arc clamping sheet, 403-arc clamping pad, 404-clamping shaft, 405- Clamping seat, 406-second driving part, 407-limiting part, 408-fixed plate, 409-sliding plate, 410-limiting slide groove, 411-limiting slider, 50-lifting and grinding assembly, 500-second lifting part, 501-grinding part, 502-mounting track, 503-rotating screw, 504-threaded mounting block, 505-third driving part, 506-sliding groove, 507-mounting frame, 508-grinding shaft, 509-grinding knife, 510-fourth driving part. DETAILED DESCRIPTION

[0028] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0029] Example:

[0030] like Figure 1 to Figure 2 As shown, in order to solve the above problems, this embodiment discloses a stainless steel ball grinding device for a ball valve, comprising a mounting table 10, a placement table 20, a moving assembly 30, a pair of lifting clamping assemblies 40 and a lifting grinding assembly 50, the mounting table 10 is provided with a mounting groove 100, a mounting block 101 is provided in the middle of the mounting groove 100, the placement table 20 is arranged on the mounting block 101, and the mounting block 101 divides the mounting groove 100 into a first groove 102 and a second groove 103;

[0031] The moving assembly 30 includes a bidirectional threaded rod 300, a pair of threaded sliders 301 and a first driving portion 302. The bidirectional threaded rod 300 is arranged in the mounting groove 100 and is rotatably connected to the mounting platform 10. The middle portion of the bidirectional threaded rod 300 passes through the mounting block 101 and is rotatably connected to the mounting block 101. A positive thread is provided on one end of the bidirectional threaded rod 300 located in the first groove 102. One of the threaded sliders 301 is arranged on one end of the bidirectional threaded rod 300 located in the first groove 102 and is threadedly connected to the bidirectional threaded rod 300. A reverse thread is provided on one end of the bidirectional threaded rod 300 located in the second groove 103. Another threaded slider 301 is arranged on one end of the bidirectional threaded rod 300 located in the second groove 103 and is threadedly connected to the bidirectional threaded rod 300. One end of the bidirectional threaded rod 300 passes through the mounting platform 10 and is connected to the first driving portion 302. The first driving portion 302 is used to drive the bidirectional threaded rod 300 to rotate.

[0032] The lifting clamping assembly 40 is respectively arranged on the two threaded sliders 301 and is arranged in cooperation with the placement table 20. The lifting clamping assembly 40 is used to clamp the stainless steel ball. The lifting grinding assembly 50 is arranged on one side of the placement table 20 and is arranged in cooperation with the placement table 20 for grinding the stainless steel ball.

[0033] When in use, the bidirectional threaded rod 300 is driven to rotate by the first driving part 302, so that the two threaded sliders 301 on the bidirectional threaded rod 300 can be close to the placement table 20 at the same time, so that the lifting and clamping assembly 40 on the threaded slider 301 can clamp the stainless steel ball placed on the placement table 20, and the stainless steel ball is ground by the lifting and grinding assembly 50; the distance between the threaded slider 301 and the placement table 20 can be adjusted to achieve the distance between the lifting and clamping assembly 40 and the placement table 20, so as to adapt to stainless steel balls of different diameters; the problem that the stainless steel ball grinding device of the current ball valve cannot be used for stainless steel balls of various diameters when in use is solved.

[0034] Preferably, the mounting platform 10 includes a base plate 104 and a mounting plate 105, the mounting plate 105 is arranged above the base plate 104 and connected by a plurality of supporting legs 106, the mounting groove 100 is arranged on the mounting plate 105, and the mounting groove 100 penetrates the mounting plate 105 from top to bottom, the two ends of the bidirectional threaded rod 300 are respectively rotatably connected to the mounting plate 105, and one end of the bidirectional threaded rod 300 penetrates the mounting plate 105 and is connected to the first driving part 302, and the first driving part 302 is used to drive the bidirectional threaded rod 300 to rotate.

[0035] like Figures 4 to 5As shown, in order to facilitate more stable clamping of stainless steel balls of different diameters, this embodiment is modified on the basis of the above embodiment. The difference from the above embodiment is that the lifting and clamping assembly 40 includes a clamping member 400 and a first lifting member 401, the first lifting member 401 is arranged on the threaded slider 301, and the clamping member 400 is cooperatively arranged on the first lifting member 401.

[0036] Preferably, the clamping member 400 includes an arc-shaped clamping piece 402, an arc-shaped clamping pad 403, a clamping shaft 404 and a clamping seat 405, the clamping seat 405 is arranged on the top of the first lifting member 401, one end of the clamping shaft 404 is fixedly connected to the clamping seat 405, and the other end is fixedly connected to the arc-shaped clamping piece 402, and the arc-shaped clamping pad 403 is arranged at one end of the arc-shaped clamping piece 402 for clamping the stainless steel ball.

[0037] Preferably, the first lifting member 401 includes a second driving portion 406 and a pair of limiting portions 407, the second driving portion 406 and the two limiting portions 407 are cooperatively arranged at the top of the threaded slider 301 and fixedly connected to the threaded slider 301, the second driving portion 406 is located between the two limiting portions 407, and the clamping seat 405 is arranged at the top of the second driving portion 406 and the two limiting portions 407, and is fixedly connected to the second driving portion 406 and the two limiting portions 407.

[0038] Preferably, the limiting portion 407 includes a fixed plate 408 and a sliding plate 409, one end of the fixed plate 408 is fixedly connected to the threaded slider 301, one end of the sliding plate 409 is fixedly connected to the clamping seat 405, a limiting groove 410 is provided on the sliding plate 409, and a limiting slider 411 is provided on the fixed plate 408 to cooperate with the limiting groove 410, the limiting slider 411 is slidably installed in the limiting groove 410, and the sliding plate 409 and the fixed plate 408 are slidably connected through the cooperation of the limiting slider 411 and the limiting groove 410.

[0039] Preferably, the arc-shaped clamping pad 403 is made of a flexible rubber material, and irregular patterns for increasing friction are provided on the contact surface between the arc-shaped clamping pad 403 and the stainless steel ball.

[0040] When in use, the height of the clamping seat 405 can be adjusted by the second driving part 406, thereby adjusting the height of the arc-shaped clamping piece 402, so that the arc-shaped clamping piece 402 clamps the middle part of the stainless steel ball, thereby clamping the stainless steel ball more stably.

[0041] The arc-shaped clamping pad 403 can protect the clamped part of the stainless steel ball during clamping to prevent scratches that affect the normal use of the stainless steel ball, and can also play an anti-slip role during clamping.

[0042] The coordinated arrangement of the fixed plate 408 and the sliding plate 409 can not only limit the movement of the clamping seat 405, but also make the lifting and lowering of the clamping seat 405 more stable.

[0043] like Figures 2 to 4 As shown, in order to facilitate the grinding of stainless steel balls of different diameters, this embodiment is modified on the basis of the above embodiment. The difference from the above embodiment is that the lifting and grinding assembly 50 includes a second lifting member 500 and a grinding member 501. The second lifting member 500 is arranged in conjunction with the mounting table 10 and is located on one side of the placement table 20. The grinding member 501 is arranged on the second lifting member 500 and is located above the placement table 20.

[0044] Preferably, the second lifting member 500 includes a mounting rail 502, a rotating screw 503, a threaded mounting block 504 and a third driving unit 505. The lower end of the mounting rail 502 passes through the mounting plate 105 and is connected to the base plate 104. A sliding groove 506 is provided above the mounting rail 502. The rotating screw 503 and the threaded mounting block 504 are cooperatively arranged in the sliding groove 506. The threaded mounting block 504 is sleeved on the rotating screw 503 and is threadedly connected to the rotating screw 503. Both ends of the rotating screw 503 are respectively rotatably connected to the mounting rail 502, and one end passes through the top of the mounting rail 502 and is connected to the third driving unit 505. The third driving unit 505 is used to drive the rotating screw 503 to rotate. The grinding member 501 is arranged on the threaded mounting block 504.

[0045] When in use, the third driving part 505 can drive the rotating screw 503 to rotate, thereby driving the threaded mounting block 504 to move up and down, thereby driving the grinding member 501 installed on the threaded mounting block 504 to move up and down, so as to grind stainless steel balls of different diameters.

[0046] In order to facilitate the grinding of stainless steel balls, this embodiment is modified on the basis of the above embodiment. The difference from the above embodiment is that the grinding member 501 includes a mounting frame 507, a grinding shaft 508, a grinding knife 509 and a fourth driving unit 510. One end of the mounting frame 507 is fixedly connected to the threaded mounting block 504. The grinding shaft 508 is arranged on the mounting frame 507, and one end passes through the mounting frame 507 and is rotatably connected to the mounting frame 507. The fourth driving unit 510 is arranged on the top of the mounting frame 507 and is fixedly connected to the grinding shaft 508 for driving the grinding shaft 508 to rotate. The grinding knife 509 is arranged at the end of the grinding shaft 508 located at one end below the mounting frame 507, and is fixedly connected to the grinding shaft 508 for grinding stainless steel balls.

[0047] When in use, the fourth driving unit 510 can drive the grinding shaft 508 and then drive the grinding knife 509 to grind the stainless steel ball.

[0048] In the above embodiment, the first driving part 302, the third driving part 505 and the fourth driving part 510 can all adopt motors in the prior art that can realize the function of the utility model, and the second driving part 406 can adopt a pneumatic telescopic rod in the prior art that can realize the function of the utility model.

[0049] Working principle of this utility model:

[0050] When in use, the bidirectional threaded rod 300 is driven to rotate by the first driving part 302, so that the two threaded sliders 301 on the bidirectional threaded rod 300 can be close to the placement table 20 at the same time, so that the lifting and clamping assembly 40 on the threaded slider 301 can clamp the stainless steel ball placed on the placement table 20, and the stainless steel ball is ground by the lifting and grinding assembly 50; the distance between the threaded slider 301 and the placement table 20 can be adjusted to achieve the distance between the lifting and clamping assembly 40 and the placement table 20, so as to adapt to stainless steel balls of different diameters; the problem that the stainless steel ball grinding device of the current ball valve cannot be used for stainless steel balls of various diameters when in use is solved.

[0051] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A stainless steel ball grinding device for a ball valve, characterized in that: The invention comprises a mounting platform (10), a placing platform (20), a moving assembly (30), a pair of lifting clamping assemblies (40) and a lifting grinding assembly (50); the mounting platform (10) is provided with a mounting groove (100); a mounting block (101) is provided in the middle of the mounting groove (100); the placing platform (20) is arranged on the mounting block (101); and the mounting block (101) divides the mounting groove (100) into a first groove (102) and a second groove (103); The moving assembly (30) comprises a bidirectional threaded rod (300), a pair of threaded sliders (301) and a first driving part (302). The bidirectional threaded rod (300) is arranged in the mounting groove (100) and is rotatably connected to the mounting platform (10). The middle part of the bidirectional threaded rod (300) passes through the mounting block (101) and is rotatably connected to the mounting block (101). A positive thread is arranged on one end of the bidirectional threaded rod (300) located in the first groove (102). One of the threaded sliders (301) is arranged so that the bidirectional threaded rod (300) is located in the first groove (102). The first driving part (302) is connected to the first driving part (302) through one end of the bidirectional threaded rod (300) in the groove (102), and the first driving part (302) is used to drive the bidirectional threaded rod (300) to rotate; The lifting clamping assembly (40) is respectively arranged on the two threaded sliders (301) and is arranged in cooperation with the placement table (20). The lifting clamping assembly (40) is used to clamp the stainless steel ball. The lifting grinding assembly (50) is arranged on one side of the placement table (20) and is arranged in cooperation with the placement table (20) and is used to grind the stainless steel ball.

2. The stainless steel ball grinding device for a ball valve according to claim 1, characterized in that: The mounting platform (10) comprises a base plate (104) and a mounting plate (105), wherein the mounting plate (105) is arranged above the base plate (104) and connected via a plurality of supporting legs (106), wherein a mounting groove (100) is arranged on the mounting plate (105), and the mounting groove (100) penetrates the mounting plate (105) from top to bottom, wherein both ends of the bidirectional threaded rod (300) are respectively rotatably connected to the mounting plate (105), and one end of the bidirectional threaded rod (300) penetrates the mounting plate (105) and is connected to a first driving portion (302), and the first driving portion (302) is used to drive the bidirectional threaded rod (300) to rotate.

3. The stainless steel ball grinding device for a ball valve according to claim 2, characterized in that: The lifting and clamping assembly (40) comprises a clamping member (400) and a first lifting member (401); the first lifting member (401) is arranged on the threaded slider (301); and the clamping member (400) is cooperatively arranged on the first lifting member (401).

4. The stainless steel ball grinding device for a ball valve according to claim 3, characterized in that: The clamping member (400) comprises an arc-shaped clamping piece (402), an arc-shaped clamping pad (403), a clamping shaft (404) and a clamping seat (405); the clamping seat (405) is arranged on the top of the first lifting member (401); one end of the clamping shaft (404) is fixedly connected to the clamping seat (405), and the other end is fixedly connected to the arc-shaped clamping piece (402); the arc-shaped clamping pad (403) is arranged on one end of the arc-shaped clamping piece (402) for clamping the stainless steel ball.

5. The stainless steel ball grinding device for a ball valve according to claim 4, characterized in that: The first lifting member (401) comprises a second driving portion (406) and a pair of limiting portions (407); the second driving portion (406) and the two limiting portions (407) are cooperatively arranged at the top of the threaded slider (301) and are fixedly connected to the threaded slider (301); the second driving portion (406) is located between the two limiting portions (407); the clamping seat (405) is arranged at the top of the second driving portion (406) and the two limiting portions (407) and is fixedly connected to the second driving portion (406) and the two limiting portions (407).

6. The stainless steel ball grinding device for a ball valve according to claim 5, characterized in that: The limiting part (407) comprises a fixed plate (408) and a sliding plate (409), one end of the fixed plate (408) is fixedly connected to the threaded slider (301), one end of the sliding plate (409) is fixedly connected to the clamping seat (405), a limiting sliding groove (410) is provided on the sliding plate (409), a limiting sliding block (411) matched with the limiting sliding groove (410) is provided on the fixed plate (408), the limiting sliding block (411) is slidably installed in the limiting sliding groove (410), and the sliding plate (409) and the fixed plate (408) are slidably connected through the matching of the limiting sliding block (411) and the limiting sliding groove (410).

7. The stainless steel ball grinding device for a ball valve according to claim 6, characterized in that: The lifting and grinding assembly (50) comprises a second lifting member (500) and a grinding member (501); the second lifting member (500) is arranged in cooperation with the mounting platform (10) and is located on one side of the placement platform (20); and the grinding member (501) is arranged on the second lifting member (500) and is located above the placement platform (20).

8. The stainless steel ball grinding device for a ball valve according to claim 7, characterized in that: The second lifting member (500) comprises a mounting track (502), a rotating screw rod (503), a threaded mounting block (504) and a third driving unit (505). The lower end of the mounting track (502) passes through the mounting plate (105) and is connected to the bottom plate (104). A sliding notch (506) is provided above the mounting track (502). The rotating screw rod (503) and the threaded mounting block (504) are cooperatively arranged in the sliding notch (506). The threaded mounting block (504) is sleeved on the rotating screw rod (503) and is threadedly connected to the rotating screw rod (503). Both ends of the rotating screw rod (503) are respectively rotatably connected to the mounting track (502), and one end passes through the top of the mounting track (502) and is connected to the third driving unit (505). The third driving unit (505) is used to drive the rotating screw rod (503) to rotate. The grinding member (501) is arranged on the threaded mounting block (504).

9. The stainless steel ball grinding device for a ball valve according to claim 8, characterized in that: The grinding member (501) comprises a mounting frame (507), a grinding shaft (508), a grinding knife (509) and a fourth driving unit (510). One end of the mounting frame (507) is fixedly connected to the threaded mounting block (504). The grinding shaft (508) is arranged on the mounting frame (507), and one end thereof passes through the mounting frame (507) and is rotatably connected to the mounting frame (507). The fourth driving unit (510) is arranged on the top of the mounting frame (507) and is fixedly connected to the grinding shaft (508) and is used for driving the grinding shaft (508) to rotate. The grinding knife (509) is arranged at the end of the grinding shaft (508) located at one end below the mounting frame (507) and is fixedly connected to the grinding shaft (508) and is used for grinding stainless steel balls.

10. The stainless steel ball grinding device for a ball valve according to claim 9, characterized in that: The first driving part (302), the third driving part (505) and the fourth driving part (510) are all motors, and the second driving part (406) is a pneumatic telescopic rod.

Images