A valve ball inner surface thermal spraying device

Abstract

The utility model discloses a valve ball body inner surface thermal spraying device, including work table, the right side of work table top is equipped with thermal spraying assembly, the left side of work table top is equipped with positioning mechanism, including in positioning mechanism: positioning assembly, including the positioning seat of installation in work table top left side, the utility model relates to foundry technology field. The valve ball body inner surface thermal spraying device, through being provided with positioning mechanism, adopt four sets of rotating shaft and the positioning structure of positioning plate, cooperate the arc -shaped groove drive of drive motor drive, can pass through the rotational speed of adjusting drive motor and steering, control positioning plate along the sliding of limit slide rail, adapt to different diameter's valve ball body, and the setting of antiskid pad further promotes the clamping stability, avoids the deviation of ball body in the rotation process, and the positioning plate is connected through bolt between transmission plate, can further adapt to different diameter's valve ball body.

Description

Technical Field

[0001] This utility model relates to the field of casting processing technology, specifically to a thermal spraying device for the inner surface of a valve ball. Background Technology

[0002] The reference patent title is: A thermal spraying device for wear-resistant treatment of valve ball surface (Authorization Announcement No.: CN219586162U, Authorization Announcement Date: 2023.08.25). It includes a base plate, a lead screw 1, and a lead screw 2. A movable block 1 is provided at the upper end of the base plate. An electric push rod is fixedly installed at the top of the movable block 1. A fixed block 2 is provided at the upper end of the electric push rod. A fixed groove 3 is formed on the top surface of the fixed block 2. A rotating device 1 is provided inside the fixed groove 3. The thermal spraying device for wear-resistant treatment of valve ball surface, by incorporating the rotating device 1, rotating device 2, and electric push rod, increases the applicability of the device. The inclusion of the rotating device 1, rotating device 2, and electric push rod avoids dead angles during thermal spraying of the valve ball.

[0003] Based on the above-mentioned documents: As the core sealing component of a valve, the wear resistance and corrosion resistance of the inner surface of the valve ball directly determine the service life and sealing performance of the valve. In order to improve the performance of the inner surface of the valve ball, thermal spraying technology (such as plasma spraying and supersonic flame spraying) is commonly used in the industry to form a functional coating on its inner wall. However, traditional devices often use fixed clamps to hold the ball, which is difficult to adapt to valve balls of different diameters. Moreover, the ball is prone to displacement after clamping, resulting in a deviation in the relative position between the spraying tube and the inner wall of the ball, and uneven coating thickness. Therefore, this utility model provides a thermal spraying device for the inner surface of a valve ball. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a thermal spraying device for the inner surface of a valve ball, which solves the problem that the fixing fixture structure in traditional devices is relatively simple, making it difficult to adapt to valve balls of different diameters, resulting in poor stability of the ball after fixing and easy displacement.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a thermal spraying device for the inner surface of a valve ball, comprising a worktable, a thermal spraying assembly on the right side of the top of the worktable, and a positioning mechanism on the left side of the top of the worktable, the positioning mechanism comprising: The positioning assembly includes a positioning seat mounted on the top left side of the workbench. Multiple sets of rotating shafts are rotatably connected inside the positioning seat. A rotating gear is fixedly connected to one end of each rotating shaft, and a protective box is fixedly connected to the other end of each rotating shaft. A drive motor is fixedly connected to the inner wall of the protective box. One end of the output shaft of the drive motor is fixedly connected to a drive disc via a coupling. Multiple sets of arc-shaped grooves are formed on the surface of the drive disc. The inner surface of the arc-shaped grooves drives the positioning plate to slide through a transmission assembly. A rotating component, located on one side of the positioning seat, is used to drive the rotating shaft to rotate.

[0006] Preferably, the transmission assembly includes a limiting slide rail installed on one side of the protective box, a transmission block slidably connected to the surface of the limiting slide rail, a transmission plate fixedly connected to one side of the transmission block, the transmission plate being installed and fixed to the positioning plate by bolts, a sliding block being fixedly connected to one end of the transmission plate, and the surface of the sliding block being slidably connected to the inner surface of the arc groove.

[0007] Preferably, a positioning groove is provided on one side of the positioning seat for the transmission block to slide, and an anti-slip pad is provided on the inner positioning surface of the positioning plate.

[0008] Preferably, the rotating assembly includes a rotary cylinder mounted on one side of the positioning seat. The output end of the rotary cylinder is fixedly connected to a connecting block, and the top of the connecting block is fixedly connected to a sliding toothed plate. The top of the sliding toothed plate meshes with the surface of the rotating gear through the toothed block.

[0009] Preferably, a limiting rod is fixedly connected to the other side of the positioning seat, and the surface of the limiting rod is slidably connected to the inside of the connecting block.

[0010] Preferably, the thermal spraying assembly includes a movable base mounted on the top right side of the workbench. A movable motor is fixedly connected to one side of the movable base. One end of the output shaft of the movable motor is fixedly connected to a movable lead screw via a coupling. A movable block is threaded onto the surface of the movable lead screw. A device plate is fixedly connected to the top of the movable block. A lifting cylinder is fixedly connected to the top of the device plate. A lifting plate is fixedly connected to the output end of the lifting cylinder. A translation cylinder is fixedly connected to one side of the lifting plate. A support plate is fixedly connected to the output end of the translation cylinder. A spray pipe is mounted on the surface of the support plate. An industrial camera is mounted on the bottom of the support plate.

[0011] Beneficial effects This invention provides a thermal spraying device for the inner surface of a valve ball. Compared with the prior art, it has the following advantages: 1. This thermal spraying device for the inner surface of the valve ball features a positioning mechanism with four sets of rotating shafts and positioning plates. Combined with an arc-shaped groove transmission driven by a drive motor, the positioning plate can be controlled to slide along the limit rail by adjusting the speed and direction of the drive motor, adapting to valve balls of different diameters. Anti-slip pads further enhance clamping stability, preventing the ball from shifting during rotation. The positioning plate and transmission plate are bolted together, further adapting to valve balls of different diameters. Simultaneously, the rotating assembly drives a sliding toothed plate via a rotating cylinder, which meshes with a rotating gear to rotate the rotating shaft, thereby driving the ball to rotate at a uniform speed. The limit rod ensures stable meshing between the sliding toothed plate and the rotating gear, preventing tooth disengagement and ensuring the smooth rotation of the ball, providing a foundation for uniform spraying.

[0012] 2. The thermal spraying device for the inner surface of the valve ball is equipped with thermal spraying components. It uses a moving motor and a moving lead screw to achieve long-distance horizontal movement of the spraying pipe, and uses a lifting cylinder and a translation cylinder to achieve short-distance horizontal adjustment of the spraying pipe. With the real-time image feedback from an industrial camera, the distance between the spraying pipe and the ball can be precisely controlled to improve the uniformity of the coating. Attached Figure Description

[0013] Figure 1 This is a three-dimensional schematic diagram of the external structure of this utility model; Figure 2 This is a three-dimensional schematic diagram of the rotating component of this utility model; Figure 3 This is a three-dimensional schematic diagram of the external structure of the protective box of this utility model; Figure 4 This is a three-dimensional schematic diagram of the positioning component of this utility model; Figure 5 This is a three-dimensional structural diagram of the thermal spraying assembly of this utility model.

[0014] In the diagram: 1-Workbench, 2-Thermal spraying assembly, 21-Moving seat, 22-Moving motor, 23-Moving lead screw, 24-Moving block, 25-Equipment plate, 26-Lifting cylinder, 27-Lifting plate, 28-Transfer cylinder, 29-Bearing plate, 210-Spraying pipe, 211-Industrial camera, 3-Positioning mechanism, 31-Positioning assembly, 311-Positioning seat, 312-Rotating shaft, 313-Rotating gear, 314-Protective box, 315-Drive disk, 316-Arc groove, 317-Positioning plate, 32-Rotating assembly, 321-Rotating cylinder, 322-Connecting block, 323-Sliding toothed plate, 4-Transmission assembly, 41-Limiting slide rail, 42-Transmission block, 43-Transmission plate, 44-Sliding block, 5-Positioning groove, 6-Limiting rod. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-5 This utility model provides a technical solution: A thermal spraying device for the inner surface of a valve ball includes a worktable 1, a thermal spraying assembly 2 on the right side of the top of the worktable 1, and a positioning mechanism 3 on the left side of the top of the worktable 1. The positioning mechanism 3 includes: The positioning assembly 31 includes a positioning seat 311 installed on the top left side of the workbench 1. Multiple sets of rotating shafts 312 are rotatably connected inside the positioning seat 311. A rotating gear 313 is fixedly connected to one end of the rotating shaft 312, and a protective box 314 is fixedly connected to the other end of the rotating shaft 312. A drive motor is fixedly connected to the inner wall of the protective box 314. A drive disk 315 is fixedly connected to one end of the output shaft of the drive motor through a coupling. Multiple sets of arc-shaped grooves 316 are opened on the surface of the drive disk 315. The inner surface of the arc-shaped grooves 316 drives the positioning plate 317 to slide through the transmission assembly 4. The rotating component 32 is located on one side of the positioning seat 311 and is used to drive the rotating shaft 312 to rotate.

[0017] The drive motor is located on the inner wall of the protective box 314, which is not shown in the attached drawing. The drive motor is a three-phase asynchronous motor. One end of the positioning plate 317 is equipped with an arc-shaped clamping block for holding the valve ball, and an anti-slip pad is provided on the inner wall of the arc-shaped clamping block; The positioning mechanism 3 employs a positioning structure with four sets of rotating shafts 312 and positioning plates 317, coupled with the arc-shaped groove 316 driven by the drive motor. By adjusting the speed and direction of the drive motor, the positioning plate 317 can be controlled to slide along the limiting slide rail 41, adapting to valve balls of different diameters. The anti-slip pad further enhances the clamping stability, preventing the ball from shifting during rotation. The positioning plate 317 and the transmission plate 43 are connected by bolts, further adapting to valve balls of different diameters. Simultaneously, the rotating component 32 drives the sliding toothed plate 323 through the rotating cylinder 321, which meshes with the rotating gear 313 to drive the rotating shaft 312 to rotate, thereby driving the ball to rotate at a uniform speed. The limiting rod 6 ensures the stable meshing of the sliding toothed plate 323 and the rotating gear 313, preventing tooth disengagement and ensuring the smooth rotation of the ball, providing a foundation for uniform spraying.

[0018] In this embodiment, the transmission assembly 4 includes a limiting slide rail 41 installed on one side of the protective box 314. A transmission block 42 is slidably connected to the surface of the limiting slide rail 41. A transmission plate 43 is fixedly connected to one side of the transmission block 42. The transmission plate 43 is installed and fixed to the positioning plate 317 by bolts. A sliding block 44 is fixedly connected to one end of the transmission plate 43. The surface of the sliding block 44 is slidably connected to the inner surface of the arc groove 316.

[0019] The limiting slide rail 41 is used to limit the sliding movement of the transmission block 42; In this embodiment, a positioning groove 5 for sliding the transmission block 42 is provided on one side of the positioning seat 311, and an anti-slip pad is provided on the inner positioning surface of the positioning plate 317.

[0020] In this embodiment, the rotating assembly 32 includes a rotating cylinder 321 mounted on one side of the positioning seat 311. A connecting block 322 is fixedly connected to the output end of the rotating cylinder 321. A sliding toothed plate 323 is fixedly connected to the top of the connecting block 322. The top of the sliding toothed plate 323 meshes with the surface of the rotating gear 313 through the toothed block.

[0021] In this embodiment, a limiting rod 6 is fixedly connected to the other side of the positioning seat 311, and the surface of the limiting rod 6 is slidably connected to the inside of the connecting block 322.

[0022] The limiting rod 6 is used to limit the sliding movement of the connecting block 322 and the sliding toothed plate 323; In this embodiment, the thermal spraying assembly 2 includes a movable seat 21 installed on the top right side of the workbench 1. A movable motor 22 is fixedly connected to one side of the movable seat 21. One end of the output shaft of the movable motor 22 is fixedly connected to a movable lead screw 23 via a coupling. A movable block 24 is threadedly connected to the surface of the movable lead screw 23. A device plate 25 is fixedly connected to the top of the movable block 24. A lifting cylinder 26 is fixedly connected to the top of the device plate 25. A lifting plate 27 is fixedly connected to the output end of the lifting cylinder 26. A translation cylinder 28 is fixedly connected to one side of the lifting plate 27. A support plate 29 is fixedly connected to the output end of the translation cylinder 28. A spraying pipe 210 is installed on the surface of the support plate 29. An industrial camera 211 is installed at the bottom of the support plate 29.

[0023] Mobile motor 22 is a three-phase asynchronous motor; The inner cavity of the device plate 25 is equipped with two sets of lifting rods that limit the vertical sliding of the lifting plate 27. Industrial camera 211: model number Hikvision MV-CA050-10GM, resolution 2592×1944, frame rate 10fps, equipped with industrial lens with a focal length of 16mm; A control panel is installed on one side of the workbench 1. The control panel is electrically connected to the industrial camera 211, the moving motor 22, the lifting cylinder 26, the translation cylinder 28 and the drive motor respectively. By setting up a thermal spraying component 2, the horizontal long-distance movement of the spraying pipe 210 is achieved by using a moving motor 22 and a moving lead screw 23. The height and horizontal short-distance adjustment of the spraying pipe 210 are achieved by using a lifting cylinder 26 and a translation cylinder 28. With the real-time image feedback from the industrial camera 211, the distance between the spraying pipe 210 and the sphere can be precisely controlled, thereby improving the uniformity of the coating.

[0024] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0025] The work steps are as follows: S1. Ball loading and positioning: Place the valve ball to be sprayed between the four sets of positioning plates 317, start the drive motor, drive the drive disc 315 to rotate, the sliding block 44 in the arc groove 316 slides along the arc trajectory, thereby driving the transmission plate 43 and transmission block 42 to slide along the limit slide rail 41 towards the ball, the positioning plate 317 moves with the transmission plate 43 until the anti-slip pad is in close contact with the surface of the ball, the drive motor stops, and the ball positioning is completed; S2, Ball rotation start: Start the rotary cylinder 321. The output end of the rotary cylinder 321 pushes the connecting block 322 to slide along the limit rod 6. The connecting block 322 drives the sliding tooth plate 323 to move. The sliding tooth plate 323 meshes with the rotating gear 313, driving the rotating shaft 312 to rotate, thereby driving the ball to rotate at a constant speed. S3. Spray pipe position adjustment: Start the moving motor 22, which drives the moving screw 23 to rotate. The moving block 24 moves in the groove at the top of the moving seat 21 until the device plate 25 moves to the corresponding sphere. Then, start the lifting cylinder 26 to adjust the height of the lifting plate 27 so that the nozzle of the spray pipe 210 is aligned with the central axis of the inner wall of the sphere. Start the translation cylinder 28 to push the bearing plate 29 to move towards the sphere so that the nozzle of the spray pipe 210 extends into the groove on the surface of the sphere. During this process, the industrial camera 211 captures the image of the sphere surface in real time and transmits the image to the external control system. The control system analyzes the distance between the spray pipe 210 and the sphere based on the image and makes fine adjustments to the translation cylinder 28, the moving motor 22 and the lifting cylinder 26. S4. Thermal spraying operation: Turn on the thermal spraying equipment. The paint is sprayed onto the inner surface of the sphere through the nozzle of the spraying pipe 210. The sphere rotates continuously at a uniform speed. The translation cylinder 28 is slowly driven according to the spraying progress, so that the spraying pipe 210 gradually covers the entire inner surface of the sphere along the axial direction. The industrial camera 211 monitors the spraying process in real time. If a local distance deviation is found, it is promptly fed back to the control system to ensure that the coating is uniform. After the spraying is completed, the thermal spraying equipment, the rotary cylinder 321, and the drive motor are turned off in sequence. The sphere is then removed to complete the operation.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A thermal spraying device for the inner surface of a valve ball, comprising a workbench (1), characterized in that: A thermal spraying assembly (2) is provided on the right side of the top of the workbench (1), and a positioning mechanism (3) is provided on the left side of the top of the workbench (1). The positioning mechanism (3) includes: The positioning assembly (31) includes a positioning seat (311) installed on the top left side of the workbench (1). The positioning seat (311) is rotatably connected to multiple sets of rotating shafts (312). One end of the rotating shaft (312) is fixedly connected to a rotating gear (313), and the other end of the rotating shaft (312) is fixedly connected to a protective box (314). The inner wall of the protective box (314) is fixedly connected to a drive motor. One end of the output shaft of the drive motor is fixedly connected to a drive disc (315) through a coupling. The surface of the drive disc (315) has multiple sets of arc grooves (316). The inner surface of the arc grooves (316) drives the positioning plate (317) to slide through the transmission assembly (4). A rotating component (32) is disposed on one side of the positioning seat (311) and is used to drive the rotating shaft (312) to rotate.

2. The thermal spraying device for the inner surface of a valve ball according to claim 1, characterized in that: The transmission assembly (4) includes a limiting slide rail (41) installed on one side of the protective box (314). A transmission block (42) is slidably connected to the surface of the limiting slide rail (41). A transmission plate (43) is fixedly connected to one side of the transmission block (42). The transmission plate (43) is installed and fixed to the positioning plate (317) by bolts. A sliding block (44) is fixedly connected to one end of the transmission plate (43). The surface of the sliding block (44) is slidably connected to the inner surface of the arc groove (316).

3. The thermal spraying device for the inner surface of a valve ball according to claim 2, characterized in that: The positioning seat (311) has a positioning groove (5) on one side for the transmission block (42) to slide, and the positioning plate (317) has an anti-slip pad on the inner positioning surface.

4. The thermal spraying device for the inner surface of a valve ball according to claim 1, characterized in that: The rotating assembly (32) includes a rotary cylinder (321) mounted on one side of the positioning seat (311). The output end of the rotary cylinder (321) is fixedly connected to a connecting block (322). The top of the connecting block (322) is fixedly connected to a sliding toothed plate (323). The top of the sliding toothed plate (323) meshes with the surface of the rotating gear (313) through the toothed block.

5. The thermal spraying device for the inner surface of a valve ball according to claim 4, characterized in that: The other side of the positioning seat (311) is fixedly connected to a limiting rod (6), and the surface of the limiting rod (6) is slidably connected to the inside of the connecting block (322).

6. The thermal spraying device for the inner surface of a valve ball according to claim 1, characterized in that: The thermal spraying assembly (2) includes a movable seat (21) installed on the top right side of the workbench (1). A movable motor (22) is fixedly connected to one side of the movable seat (21). One end of the output shaft of the movable motor (22) is fixedly connected to a movable lead screw (23) via a coupling. A movable block (24) is threadedly connected to the surface of the movable lead screw (23). A device plate (25) is fixedly connected to the top of the movable block (24). A lifting cylinder (26) is fixedly connected to the top of the device plate (25). A lifting plate (27) is fixedly connected to the output end of the lifting cylinder (26). A translation cylinder (28) is fixedly connected to one side of the lifting plate (27). A bearing plate (29) is fixedly connected to the output end of the translation cylinder (28). A spraying pipe (210) is installed on the surface of the bearing plate (29). An industrial camera (211) is installed at the bottom of the bearing plate (29).

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