A valve seat grinding tool

Abstract

The utility model relates to valve seat grinding technical field, concretely relates to a valve seat grinding tool for the valve seat body on the valve body is grinded, the flange ring is fixedly arranged on the valve body, including mounting disc, fixed mechanism, support pipe, support seat, relative movement mechanism and rotating mechanism, the mounting disc sets up one side at the valve body, the fixed mechanism sets up on the mounting disc, is used for fixing between the mounting disc and the flange ring, the support pipe rotation sets up on the mounting disc, the support seat fixedly sets up on the support pipe, the fixedly set up with the cleaning brush hair on the opposite two lateral walls of support seat, the other two lateral walls of support seat are seted up with the support groove, the grinding block is slidably arranged in the support groove, the relative movement mechanism sets up in the support seat, is used for driving the grinding block and moves in the support groove, the rotating mechanism sets up on the mounting disc, through the above technical scheme, the problem of low valve seat grinding efficiency in the prior art is solved.

Description

Technical Field

[0001] This utility model relates to the field of valve seat grinding technology, and specifically to a valve seat grinding tool. Background Technology

[0002] The valve seat is a detachable component inside the valve, used to support the valve core in the fully closed position and to form a seal. Generally, the diameter of the valve seat is the maximum flow diameter of the valve. Elastic sealing materials and small actuator thrust are usually used to achieve bubble tightness seal.

[0003] After a certain period of use, the valve seat sealing surface will leak due to wear, oxidation and erosion. Therefore, it is necessary to grind the sealing surface of the valve seat. Usually, the operator will remove the valve seat, fix it on the grinding table, and use a grinding machine to repair the sealing surface of the valve seat. After the repair is completed, it will be re-fixed inside the valve.

[0004] In the existing technology, if the valve seat is removed from the valve for grinding and repair, it needs to be reinstalled after the repair is completed. As the sealing structure in the valve, the valve seat needs to be accurately positioned during installation. However, the internal space of the valve is small and the flange diameter is small, so the staff needs to spend a lot of time positioning and installing the valve seat, which affects the overall work efficiency. Utility Model Content

[0005] This utility model proposes a valve seat grinding tool, which solves the problem of low grinding efficiency of valve seats in the prior art.

[0006] The technical solution of this utility model is as follows: a valve seat grinding tool, used to grind the valve seat body on the valve body, wherein a flange ring is fixedly provided on the valve body, including a mounting plate, a fixing mechanism, a support pipe, a support seat, a relative moving mechanism and a rotating mechanism;

[0007] The mounting plate is disposed on one side of the valve body, and the fixing mechanism is disposed on the mounting plate for fixing the mounting plate to the flange ring. The support tube is rotatably disposed on the mounting plate, and the support seat is fixedly disposed on the support tube. Cleaning bristles are fixedly disposed on two opposite side walls of the support seat, and support grooves are formed on the other two opposite side walls of the support seat. A grinding block is slidably disposed in the support groove. The relative moving mechanism is disposed in the support seat for driving the grinding block to move in the support groove. The rotating mechanism is disposed on the mounting plate for driving the support tube to rotate.

[0008] Preferably, the fixing mechanism includes:

[0009] The first cavity is annular and is located within the mounting plate. The sidewall of the first cavity has multiple fixing openings.

[0010] A fixing ring is slidably disposed in the first cavity, and the side wall of the fixing ring is provided with a plurality of fixing grooves, which are aligned with the fixing opening;

[0011] A fixing hook is provided, wherein multiple fixing hooks are provided, one end of the fixing hook extends through the fixing opening and into the fixing groove, the fixing hook is slidably connected to the side wall of the fixing groove, and a first spring is fixedly provided between the fixing hook and the bottom of the fixing groove.

[0012] A height adjustment mechanism is disposed in the first cavity and is used to drive the fixing ring and the fixing hook to adjust the height.

[0013] Furthermore, the height adjustment mechanism includes:

[0014] A first threaded rod is rotatably disposed within the first cavity, and the first threaded rod passes through the fixed ring through a threaded engagement.

[0015] The mounting plate has an annular drive groove on its side wall;

[0016] The first gear, a plurality of first gears are rotatably disposed in the drive groove, and the first gears are fixedly connected to the first threaded rod;

[0017] A drive ring is rotatably disposed within the drive groove, and a first toothed ring is fixedly disposed on the inner wall of the drive ring, the first toothed ring meshing with the first gear.

[0018] Furthermore, the relative movement mechanism includes:

[0019] The second threaded rod is rotatably disposed at the bottom of the support groove, and the second threaded rod extends into the grinding block through threaded engagement;

[0020] The second cavity is formed inside the support base. A first bevel gear is rotatably provided on the side wall of the second cavity near the second threaded rod. The first bevel gear is fixedly connected to the second threaded rod.

[0021] The second bevel gear is rotatably mounted on the inner top wall of the second cavity, and the second bevel gear meshes with the first bevel gear;

[0022] A first handwheel is rotatably mounted on the support tube, and a first connecting rod is fixedly mounted between the first handwheel and the second bevel gear.

[0023] Furthermore, the rotating mechanism includes:

[0024] The second toothed ring is fixedly mounted on the support tube;

[0025] The second gear and the second gear ring are rotatably mounted on the mounting plate, and the second gear meshes with the second gear ring;

[0026] The first motor is fixedly mounted on the mounting plate, and its output end is fixedly connected to the second gear.

[0027] Based on the above scheme, a rubber pad is provided on the side wall of the fixing hook.

[0028] The working principle and beneficial effects of this utility model are as follows:

[0029] 1. In this utility model, through the setting of the fixing mechanism, after the operator pulls the fixing hook, the mounting plate is placed on the flange ring. Then the operator releases the fixing hook, so that the fixing hook can be pulled back to its original position under the elastic force of the first spring. Then, the positioning between the flange ring and the mounting plate is achieved through the cooperation of multiple fixing hooks and the flange plate. Then, the drive ring is rotated, so that the first gear and the first threaded rod are rotated through the meshing of the first toothed ring and the first gear. Then, the fixing ring and the fixing hook are moved through the cooperation of the first threaded rod and the fixing ring. Thus, the mounting plate and the flange ring are fixed through the friction between the fixing hook and the flange ring and the friction between the mounting plate and the flange ring.

[0030] 2. In this utility model, through the setting of the relative moving mechanism, the rotation of the first handwheel can drive the first connecting rod and the second bevel gear to rotate. At the same time, the meshing of the second bevel gear and the first bevel gear drives the second threaded rod to rotate. Then, through the threaded engagement of the second threaded rod and the grinding block, the grinding block and the valve seat are brought into contact, thereby facilitating the grinding of valve seats of different diameters.

[0031] 3. In this utility model, by setting up a rotating mechanism, the operation of the first motor can drive the second gear to rotate, and at the same time, the meshing of the second gear with the second gear ring drives the support tube, support seat and grinding block to rotate, thereby facilitating the grinding of the valve seat by the grinding block;

[0032] 4. In this utility model, the installation plate, fixing mechanism, support tube, support base, relative moving mechanism and rotating mechanism are arranged to facilitate the fixing of the installation plate by the fixing mechanism. Then, the rotation of the handwheel can drive the grinding block to contact the valve seat. Then, the operation of the first motor can drive the grinding block to move, so that the valve seat can be ground by the grinding block. During the grinding process, the debris on the valve seat can be cleaned by the cleaning brush, thereby improving the grinding efficiency and solving the problem of low grinding efficiency of valve seats in the prior art. Attached Figure Description

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0034] Figure 1 This is a schematic diagram of the structure of the present invention in the grinding state;

[0035] Figure 2 This is a cross-sectional view of the present invention under the grinding state;

[0036] Figure 3 This is a schematic diagram of the structure of the mounting plate of this utility model;

[0037] Figure 4 This is a cross-sectional view of the relative movement mechanism of this utility model;

[0038] Figure 5 This is a cross-sectional view of the mounting plate of this utility model;

[0039] Figure 6 This is a cross-sectional view of the fixing mechanism of this utility model.

[0040] In the diagram: 1. Valve body; 2. Valve seat body; 3. Flange ring; 4. Mounting plate; 5. Support pipe; 6. Support base; 7. Grinding block; 8. Fixing ring; 9. Fixing hook; 10. First spring; 11. First threaded rod; 12. First gear; 13. Drive ring; 14. Second threaded rod; 15. First bevel gear; 16. Second bevel gear; 17. First handwheel; 18. First connecting rod; 19. Second gear ring; 20. Second gear; 21. First motor. Detailed Implementation

[0041] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0042] like Figures 1-6As shown, this embodiment proposes a valve seat grinding tool for grinding the valve seat body 2 on the valve body 1. A flange ring 3 is fixedly installed on the valve body 1. The tool includes a mounting plate 4, a fixing mechanism, a support tube 5, a support base 6, a relative moving mechanism, and a rotating mechanism. The mounting plate 4 is located on one side of the valve body 1. The fixing mechanism is located on the mounting plate 4 and is used to fix the mounting plate 4 and the flange ring 3. The support tube 5 is rotatably mounted on the mounting plate 4. The support base 6 is fixedly mounted on the support tube 5. Cleaning bristles are fixedly installed on two opposite side walls of the support base 6. Support grooves are opened on the other two opposite side walls of the support base 6. Grinding blocks 7 are slidably installed in the support grooves. The relative moving mechanism is located in the support base 6 and is used to drive the grinding blocks 7 to move in the support grooves. The rotating mechanism is located on the mounting plate 4 and is used to drive the support tube 5 to rotate.

[0043] Reference Figures 4-6 The fixing mechanism includes a first cavity, a fixing ring 8, a fixing hook 9, and a height adjustment mechanism. The first cavity is annular and is located within the mounting plate 4. Multiple fixing openings are provided on the sidewall of the first cavity. The fixing ring 8 is slidably disposed within the first cavity. Multiple fixing grooves are provided on the sidewall of the fixing ring 8, aligning with the fixing openings. Multiple fixing hooks 9 are provided, with one end of each hook penetrating through a fixing opening and extending into a fixing groove. The hooks 9 are slidably connected to the sidewall of the fixing groove. A first spring 10 is fixedly disposed between the hook 9 and the bottom of the groove. The height adjustment mechanism is located within the first cavity and is used to drive the fixing ring 8 and the fixing hooks 9 to adjust their height. The height adjustment mechanism includes a first threaded rod 11, a drive groove, a first gear 12, and a drive ring 13. Multiple first threaded rods 11 are rotatably disposed within the first cavity, penetrating the fixing ring 8 through threaded engagement. An annular drive groove is provided on the sidewall of the mounting plate 4, and multiple first gears 12 are rotatably disposed within the drive groove. A gear 12 is fixedly connected to a first threaded rod 11. A drive ring 13 is rotatably disposed in a drive groove. A first toothed ring is fixedly disposed on the inner wall of the drive ring 13. The first toothed ring meshes with the first gear 12. A rubber pad is disposed on the side wall of the fixing hook 9. After the operator pulls the fixing hook 9, the mounting plate 4 is placed on the flange ring 3. Then the operator releases the fixing hook 9, so that the fixing hook 9 can be pulled back to its original position under the elastic force of the first spring 10. Thus, the positioning between the flange ring 3 and the mounting plate 4 is achieved through the cooperation of multiple fixing hooks 9 and the flange plate. Then the drive ring 13 is rotated, so that the first gear 12 and the first threaded rod 11 can be rotated through the meshing of the first toothed ring and the first gear 12. Thus, the fixing ring 8 and the fixing hook 9 can be moved through the cooperation of the first threaded rod 11 and the fixing ring 8. Thus, the mounting plate 4 and the flange ring 3 are fixed through the friction between the fixing hook 9 and the flange ring 3 and the friction between the mounting plate 4 and the flange ring 3.

[0044] Reference Figures 2-4 The relative movement mechanism includes a second threaded rod 14, a second cavity, a second bevel gear 16, and a first handwheel 17. The second threaded rod 14 is rotatably mounted at the bottom of the support groove and extends into the grinding block 7 via a threaded engagement. The second cavity is located within the support seat 6. A first bevel gear 15 is rotatably mounted on the side wall of the second cavity near the second threaded rod 14 and is fixedly connected to the second threaded rod 14. The second bevel gear 16 is rotatably mounted on the inner top wall of the second cavity and engages with the first bevel gear 17. The first handwheel 17 is rotatably mounted on the support tube 5 and meshes with the second bevel gear 16. A first connecting rod 18 is fixedly installed between the first handwheel 17 and the second bevel gear 16. The rotation of the first handwheel 17 can drive the first connecting rod 18 and the second bevel gear 16 to rotate. At the same time, the meshing of the second bevel gear 16 and the first bevel gear 15 drives the second threaded rod 14 to rotate. Then, the threaded engagement between the second threaded rod 14 and the grinding block 7 drives the grinding block 7 to contact the valve seat, thereby facilitating the grinding of valve seats of different diameters.

[0045] Reference Figure 5 The rotating mechanism includes a second gear ring 19, a second gear 20, and a first motor 21. The second gear ring 19 is fixedly mounted on the support tube 5 and rotatably mounted on the mounting plate 4. The second gear 20 meshes with the second gear ring 19. The first motor 21 is fixedly mounted on the mounting plate 4, and the output end of the first motor 21 is fixedly connected to the second gear 20. The operation of the first motor 21 can drive the second gear 20 to rotate. At the same time, the meshing of the second gear 20 with the second gear ring 19 drives the support tube 5, the support seat 6, and the grinding block 7 to rotate, thereby facilitating the grinding of the valve seat by the grinding block 7.

[0046] In this embodiment, during use, the operator pulls the fixing hook 9 to place the mounting plate 4 on the flange ring 3. Then, the operator releases the fixing hook 9, allowing it to be reset under the elastic force of the first spring 10. This, in turn, uses the cooperation of multiple fixing hooks 9 with the flange plate to position the flange ring 3 and the mounting plate 4. Then, rotating the drive ring 13 causes the first gear 12 and the first threaded rod 11 to rotate through the meshing of the first gear ring and the first gear 12. This, in turn, allows the first threaded rod 11 to cooperate with the fixing ring 8, moving the fixing ring 8 and the fixing hooks 9. The friction between the fixing hooks 9 and the flange ring 3, and between the mounting plate 4 and the flange ring 3, facilitates movement. The mounting plate 4 is fixed to the flange ring 3. Then, the operator rotates the first handwheel 17. The rotation of the first handwheel 17 can drive the first connecting rod 18 and the second bevel gear 16 to rotate. At the same time, the meshing of the second bevel gear 16 and the first bevel gear 15 drives the second threaded rod 14 to rotate. Then, the threaded engagement of the second threaded rod 14 and the grinding block 7 drives the grinding block 7 to contact the valve seat. Then, the operator controls the first motor 21 to work. The operation of the first motor 21 can drive the second gear 20 to rotate. At the same time, the meshing of the second gear 20 and the second gear ring 19 drives the support tube 5, the support seat 6 and the grinding block 7 to rotate. Thus, the valve seat can be ground by the grinding block 7.

[0047] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A valve seat grinding tool for grinding a valve seat body (2) on a valve body (1), wherein a flange ring (3) is fixedly disposed on the valve body (1), characterized in that, include: Mounting plate (4), the mounting plate (4) is disposed on one side of the valve body (1); A fixing mechanism is provided on the mounting plate (4) for fixing the mounting plate (4) and the flange ring (3); Support tube (5), which is rotatably mounted on the mounting plate (4); Support base (6), the support base (6) is fixedly installed on the support tube (5), cleaning bristles are fixedly installed on the two opposite side walls of the support base (6), and support grooves are opened on the other two opposite side walls of the support base (6), and grinding blocks (7) are slidably installed in the support grooves; A relative moving mechanism is provided in the support base (6) for driving the grinding block (7) to move in the support groove; A rotating mechanism is provided on the mounting plate (4) and is used to drive the support tube (5) to rotate.

2. The valve seat grinding tool according to claim 1, characterized in that, The fixing mechanism includes: The first cavity is annular and is located inside the mounting plate (4). The sidewall of the first cavity has multiple fixing ports. A fixing ring (8) is slidably disposed in the first cavity. The side wall of the fixing ring (8) is provided with a plurality of fixing grooves, which are aligned with the fixing opening. A fixing hook (9) is provided, wherein multiple fixing hooks (9) are provided, one end of the fixing hook (9) extends through the fixing opening and into the fixing groove, the fixing hook (9) is slidably connected to the side wall of the fixing groove, and a first spring (10) is fixedly provided between the fixing hook (9) and the bottom of the fixing groove. A height adjustment mechanism is provided in the first cavity for driving the fixing ring (8) and the fixing hook (9) to adjust their height.

3. A valve seat grinding tool according to claim 2, characterized in that, The height adjustment mechanism includes: First threaded rod (11), a plurality of first threaded rods (11) are rotatably disposed in the first cavity, and the first threaded rods (11) pass through the fixed ring (8) through threaded engagement; The mounting plate (4) has an annular drive groove on its side wall; The first gear (12) is rotatably arranged in the drive groove, and the first gear (12) is fixedly connected to the first threaded rod (11). A drive ring (13) is rotatably disposed in the drive groove. A first toothed ring is fixedly disposed on the inner wall of the drive ring (13), and the first toothed ring meshes with the first gear (12).

4. A valve seat grinding tool according to claim 3, characterized in that, The relative movement mechanism includes: The second threaded rod (14) is rotatably disposed at the bottom of the support groove, and the second threaded rod (14) extends into the grinding block (7) through threaded engagement; The second cavity is opened in the support (6). A first bevel gear (15) is rotatably provided on the side wall of the second cavity near the second threaded rod (14). The first bevel gear (15) is fixedly connected to the second threaded rod (14). The second bevel gear (16) is rotatably disposed on the inner top wall of the second cavity, and the second bevel gear (16) meshes with the first bevel gear (15); The first handwheel (17) is rotatably mounted on the support tube (5), and a first connecting rod (18) is fixedly mounted between the first handwheel (17) and the second bevel gear (16).

5. A valve seat grinding tool according to claim 4, characterized in that, The rotating mechanism includes: The second toothed ring (19) is fixedly mounted on the support tube (5); The second gear (20) and the second gear ring (19) are rotatably mounted on the mounting plate (4), and the second gear (20) meshes with the second gear ring (19); The first motor (21) is fixedly mounted on the mounting plate (4), and the output end of the first motor (21) is fixedly connected to the second gear (20).

6. A valve seat grinding tool according to claim 5, characterized in that, The side wall of the fixing hook (9) is provided with a rubber pad.

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