A surface thermal spraying device for valve ball

Abstract

This utility model relates to a thermal spraying device for the surface of a valve ball, including a worktable, a processing seat fixed on the upper side of the worktable, an inner cavity opened in the processing seat, a placement groove extending vertically through the upper side wall of the inner cavity, and symmetrically installed correction arms in the placement groove; an external support mechanism capable of vertical movement is installed in the inner cavity. When the technician fixes the valve ball, the two correction arms are inserted into the interior of the valve ball and brought into contact with the inner side wall of the valve ball, thereby correcting the opening orientation of the valve ball so that the opening of the valve ball can face vertically upwards, without the need for manual adjustment by the technician, and ensuring that the outer surface of the valve ball can receive comprehensive and uniform thermal spraying treatment during the thermal spraying process.

Description

Technical Field

[0001] This utility model relates to valve balls, and more particularly to a thermal spraying device for the surface of valve balls. Background Technology

[0002] To improve the wear resistance and corrosion resistance of valve balls, thermal spraying is required on the surface of the valve ball during the production process. Chinese utility model patent CN202221214532.1 discloses a thermal spraying device for valve inner balls. The device uses an external support mechanism to support and fix the valve inner ball, ensuring thorough spraying and improving the working accuracy of the device. The discharge mechanism and electric telescopic rod work together to automatically discharge the valve inner ball, reducing personnel injuries and improving the practicality of the device.

[0003] However, the device disclosed in this patent still has certain defects: there is no correction component on the top plate, and when technicians place the valve ball, the valve opening of the valve ball cannot be vertically upward, which can easily lead to a situation where it cannot be aligned with the inner support structure.

[0004] To address this issue, we propose a thermal spraying device for the surface of a valve ball. Utility Model Content

[0005] This invention proposes a thermal spraying device for the surface of a valve ball, which solves the aforementioned problems existing in the use of the prior art.

[0006] The technical solution of this utility model is implemented as follows: a surface thermal spraying device for a valve ball includes a worktable, a processing seat is fixedly provided on the upper side of the worktable, an internal cavity is opened in the processing seat, a placement groove is opened vertically through the upper side wall of the internal cavity, and a correction arm is symmetrically installed in the placement groove.

[0007] The cavity is equipped with an external support mechanism that can move up and down.

[0008] A further feature of this invention is that: adjustment grooves are provided in the left and right side walls of the placement groove, and a sliding plate is integrally formed on each of the correction arms, and the sliding plate is slidably connected to the adjustment groove on the same side.

[0009] Each of the adjustment slots has several equidistant linearly distributed positioning holes running vertically through its upper sidewall. Each of the sliding plates has a locking hole in its upper sidewall, and a locking bolt that passes through the positioning hole is threaded into the locking hole.

[0010] A further feature of this invention is that a frustum capable of moving up and down is installed inside the internal cavity, and the external support mechanism is installed inside the frustum.

[0011] The cavity contains a lifting mechanism for driving the frustum to move up and down.

[0012] A further feature of this invention is that the lifting mechanism includes a lifting platform capable of moving up and down within the internal cavity, and a cylinder for driving the lifting platform is mounted on the worktable.

[0013] The upper side of the lifting platform has an upward-facing mounting groove, in which a motor is installed, and the output shaft of the motor is fixedly fitted with a base.

[0014] The base is fixed with a plurality of support rods for supporting the frustum, and the upper end of each support rod is fixed to the lower side of the frustum.

[0015] A further feature of this invention is that the frustum has a movable cavity, and the external support mechanism includes a support rod that can move up and down within the movable cavity.

[0016] The inner circumference of the curved sidewall of the frustum is provided with slots at equal intervals, and each slot is slidably connected to an outer support rod. The inner surface of each outer support rod is an inclined surface, and the upper side of the support rod is integrally formed with a cone head that fits against the inclined surface.

[0017] Each of the external support rods is fixed with a connecting plate on its side wall, and each connecting plate is connected to the curved side wall of the moving cavity with a spring.

[0018] A further feature of this invention is that an electric cylinder is mounted on the upper side of the base, and the lower end of the spreading rod penetrates the lower side wall of the moving cavity and is fixedly connected to the piston rod end of the electric cylinder.

[0019] A further feature of this invention is that each of the outer support rods has a groove on its outer side, and a plug is interference-fitted into each groove, with a support plate fixedly connected to the plug.

[0020] In summary, the beneficial effects of this utility model are as follows:

[0021] When fixing the valve ball, the technician inserts two correction arms into the inside of the valve ball and makes the correction arms contact the inner wall of the valve ball, thereby correcting the opening orientation of the valve ball so that the opening of the valve ball can face vertically upwards. This eliminates the need for manual adjustment by the technician and ensures that the outer surface of the valve ball can receive a comprehensive and uniform thermal spraying treatment during the thermal spraying process.

[0022] After the valve ball's opening orientation is corrected, the truncated cone extends into the valve ball's interior. The support plate, under the action of the support rod, presses against the inner wall of the valve ball, thereby fixing the valve ball's position to prevent it from slipping during the thermal spraying process. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a front view schematic diagram of the internal structure of this utility model;

[0026] Figure 3 for Figure 2 Enlarged view of a portion of point A in the middle;

[0027] Figure 4 for Figure 2 A magnified view of a portion of point B in the middle.

[0028] The following are the labeling elements in the diagram: 11. Worktable; 12. Machining seat; 13. Internal cavity; 14. Placement slot; 15. Correction arm; 17. Adjustment slot; 18. Sliding plate; 19. Positioning hole; 20. Locking hole; 21. Locking bolt; 22. Frustum; 23. Lifting platform; 24. Cylinder No. 1; 25. Support rod; 26. Moving cavity; 27. Spreading rod; 28. Through slot; 29. ​​External support rod; 30. Inclined surface; 31. Cone head; 32. Connecting plate; 33. Spring; 34. Electric cylinder; 35. Insertion slot; 36. Plug; 37. Support plate; 38. Mounting slot; 39. Motor; 40. Base. Detailed Implementation

[0029] The following will refer to the appendix in the embodiments of this utility model. Figure 1-4 The technical solutions in the embodiments of this utility model are clearly and completely described herein. 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 skilled in the art without creative effort are within the protection scope of this utility model.

[0030] Example:

[0031] like Figures 1 to 4As shown, a thermal spraying device for the surface of a valve ball includes a worktable 11. A thermal spraying device with a swing function (not shown in the figure) is installed on one side of the worktable 11. A processing seat 12 is fixed on the upper side of the worktable 11. An internal cavity 13 is opened in the processing seat 12. A placement groove 14 is opened vertically through the upper side wall of the internal cavity 13. Correction arms 15 are symmetrically installed in the placement groove 14. When the technician fixes the valve ball, the two correction arms 15 are inserted vertically upward into the valve ball to correct the orientation of the valve ball opening. The technician does not need to manually correct the position of the valve ball, so that the thermal spraying device can perform uniform and comprehensive thermal spraying treatment on the surface of the valve ball.

[0032] To enable the surface thermal spraying device for the valve ball to adapt to valve balls of different specifications, based on Embodiment 1, Embodiment 2 is proposed: Adjustment grooves 17 are provided in the left and right side walls of the placement groove 14; each correction arm 15 is integrally formed with a sliding plate 18 that can slide left and right within the adjustment groove 17 on the same side; several equidistant linearly distributed positioning holes 19 are provided vertically through the upper side wall of each adjustment groove 17; and each sliding plate 18 is provided with a locking hole 20 in the upper side wall, with a locking bolt 21 threaded into the locking hole 20 that can pass through the positioning hole 19.

[0033] Technicians can adjust the distance between the two adjustment arms 15 by moving them left and right according to the specific size of the valve ball, so that they can be adapted to valve balls of different sizes. After the technicians have adjusted the distance between the two adjustment arms 15, they can insert the locking bolt 21 into the corresponding positioning hole 19 and thread it into the locking hole 20 to fix the position of the two adjustment arms 15.

[0034] The inner cavity 13 is equipped with a truncated cone 22 that can move up and down, and the inner cavity 13 is equipped with a lifting mechanism for driving the truncated cone 22 to move up and down. The truncated cone 22 has a moving cavity 26, and the moving cavity 26 is equipped with a supporting rod 27 that can move up and down. The inner circumference of the curved side wall of the truncated cone 22 is provided with several through slots 28 at equal intervals. Each through slot 28 is slidably connected to an outer support rod 29. Each outer support rod 29 has a support plate 37 installed on its outer side surface, and the inner side surface of each outer support rod 29 is an inclined surface 30. The upper side of the supporting rod 27 is integrally formed with a cone head 31 that fits against the inclined surface 30.

[0035] Each of the outer support rods 29 is fixed with a connecting plate 32 on its side wall. Each of the connecting plates 32 is connected to the curved side wall of the moving cavity 26 with a spring 33. When the valve ball is not needed to be fixed by the support plate 37, the opening rod 27 moves downward and the outer support rod 29 retracts into the moving cavity 26 under the action of the spring 33, and no longer fixes the valve ball.

[0036] After the technicians initially fix the valve ball onto the two adjustment slots 17, the frustum 22 moves upward and extends into the interior of the valve ball. Then, the support rod 27 moves upward, so that the support rod 27 can push each of the outer support rods 29 outward along the inclined surface 30, so that the support plate 37 presses against the inner wall of the valve ball to achieve the purpose of fixing the valve ball.

[0037] The specific structure of the lifting mechanism is as follows: the lifting mechanism includes a lifting platform 23 that can move up and down within the internal cavity 13. A cylinder 24 for driving the lifting platform 23 is installed on the worktable 11. An upward-opening mounting groove 38 is provided on the upper side of the lifting platform 23. A motor 39 is installed in the mounting groove 38. A self-rotating base 40 is fixed to the end of the output shaft of the motor 39. Several support rods 25 for supporting the frustum 22 are fixed to the base 40. The upper end of each support rod 25 is fixed to the lower side of the frustum 22.

[0038] In addition, an electric cylinder 34 for driving the expansion rod 27 to move up and down is installed on the upper side of the base 40 (the installation and connection of the electric cylinder 34 and the base 40 is prior art, so it will not be described in detail here). The lower end of the expansion rod 27 passes through the lower side wall of the moving cavity 26 and is fixedly connected to the piston rod end of the electric cylinder 34.

[0039] During the process of fixing the valve ball, the first cylinder 24 drives the lifting platform 23 to move upward, thereby causing the entire truncated cone 22 to move upward and enter the interior of the valve ball. After the truncated cone 22 extends into the valve ball, the truncated cone 22 stops moving. The electric cylinder 34 drives the spreading rod 27 to move upward in the moving cavity 26, so that the spreading rod 27 can spread each of the outer support rods 29 through the cone head 31, so that each of the outer support rods 29 can drive the support plate 37 to move outward and press against the inner wall of the valve ball.

[0040] After the fixing is completed, the motor 39 drives the base 40 to rotate, thereby enabling the valve ball to rotate synchronously, so that the thermal spraying equipment can perform comprehensive and uniform thermal spraying on the outer surface of the valve ball during the thermal spraying process.

[0041] To enable the support plate 37 to fix valve balls of different sizes, based on the above, Embodiment 3 is proposed: each of the outer support rods 29 has a groove 35 on its outer side, and a plug 36 is interference-fitted into each groove 35. The support plate 37 is fixedly connected to the plug 36. The technician can replace the support plate 37 according to the size of the valve ball to be processed to ensure that the support plate 37 can be pressed against the inner wall of the valve ball. When replacing, the technician holds the support plate 37 and pulls the plug 36 out of the support rod 25, and then inserts the plug 36 on the appropriate support plate 37 into the corresponding groove 35.

[0042] It should also be noted that the terms used in this utility model, such as "front", "rear", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0043] The above description is only a preferred embodiment of the present utility model and is 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 should be included within the protection scope of the present utility model.

Claims

1. A thermal spraying device for the surface of a valve ball, comprising a worktable (11), characterized in that: The workbench (11) is fixedly provided with a processing seat (12) on the upper side. The processing seat (12) is provided with a content cavity (13). The upper side wall of the content cavity (13) is provided with a placement groove (14) running vertically through it. The placement groove (14) is provided with a correction arm (15) symmetrically installed on the left and right sides. An external support mechanism capable of moving up and down is installed inside the internal cavity (13).

2. The thermal spraying device for the surface of a valve ball according to claim 1, characterized in that: The left and right side walls of the placement slot (14) are provided with adjustment slots (17), and each of the correction arms (15) is integrally formed with a sliding plate (18). The sliding plate (18) is slidably connected to the adjustment slot (17) on the same side. Each of the adjustment slots (17) has several equidistant linearly distributed positioning holes (19) extending vertically through its upper sidewall. Each of the sliding plates (18) has a locking hole (20) extending vertically through its upper sidewall. A locking bolt (21) passing through the positioning hole (19) is threaded into the locking hole (20).

3. The thermal spraying device for the surface of a valve ball according to claim 1, characterized in that: A frustum (22) capable of moving up and down is installed inside the internal cavity (13), and the external support mechanism is installed inside the frustum (22); The content cavity (13) is equipped with a lifting mechanism for driving the truncated cone (22) to move up and down.

4. The thermal spraying device for the surface of a valve ball according to claim 3, characterized in that: The lifting mechanism includes a lifting platform (23) that can move up and down within the content cavity (13), and a cylinder (24) for driving the lifting platform (23) is installed on the worktable (11). The upper side of the lifting platform (23) is provided with an upward-facing mounting groove (38), and a motor (39) is installed in the mounting groove (38). The output shaft of the motor (39) is fixedly provided with a base (40). The base (40) is fixed with a plurality of support rods (25) for supporting the frustum (22), and the upper end of each support rod (25) is fixed on the lower side of the frustum (22).

5. The thermal spraying device for the surface of a valve ball according to claim 4, characterized in that: The truncated cone (22) has an action cavity (26) inside, and the external support mechanism includes a support rod (27) that can move up and down in the action cavity (26). The inner circumference of the curved sidewall of the frustum (22) is provided with through slots (28) at equal intervals. Each through slot (28) is slidably connected with an outer support rod (29). The inner side of each outer support rod (29) is an inclined surface (30). The upper side of the support rod (27) is integrally formed with a cone head (31) that fits against the inclined surface (30). Each of the external support rods (29) has a connecting plate (32) fixed on its curved sidewall, and each of the connecting plates (32) is connected to the sidewall of the moving cavity (26) by a spring (33).

6. The thermal spraying device for the surface of a valve ball according to claim 5, characterized in that: An electric cylinder (34) is installed on the upper side of the base (40), and the lower end of the spreading rod (27) passes through the lower side wall of the moving cavity (26) and is fixedly connected to the piston rod end of the electric cylinder (34).

7. The thermal spraying device for the surface of a valve ball according to claim 5, characterized in that: Each of the outer support rods (29) has a groove (35) on its outer side, and a plug (36) is interference-fitted in the groove (35), and a support plate (37) is connected to the plug (36).

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