Ball surface spray welding device for ball valve

Abstract

The utility model relates to a sphere surface spray welding device for a ball valve, which comprises a rotating machine, a clamping assembly and a welding gun, the clamping assembly is connected with the rotating machine, the sphere surface spray welding device further comprises an arc-shaped moving mechanism, the arc-shaped moving mechanism comprises an arc-shaped guide rod, a moving block and a driving block, the arc-shaped guide rod is arranged around the clamping assembly, and the arc-shaped guide rod is arranged around the moving block. The welding gun is connected with the moving block, and the driving block drives the moving block to move on the arc-shaped guide rod along the arc-shaped guide rod. The utility model provides the spray welding device which is used for more uniform spray welding on the surface of the ball body of the ball valve.

Description

Technical Field

[0001] This utility model relates to the field of ball valve processing technology, specifically to a ball surface spray welding device for ball valves. Background Technology

[0002] The ball is the core component of a ball valve, directly rubbing against the medium (such as high-velocity fluids containing particles) and the valve seat. Spraying a layer of high-hardness material (such as tungsten carbide, nickel-based alloys, etc.) can significantly improve surface wear resistance and extend service life, especially in abrasive media (such as mud, slurry, ash).

[0003] During spray welding, the ball is usually clamped and rotated by a fixture, and then the spray gun performs spray welding on the side. However, the existing spray welding equipment can only perform spray welding in one direction. Even if the welding gun moves, it will only move horizontally. The closer the ball is to the sides, the worse the spray welding effect becomes. Utility Model Content

[0004] In summary, to overcome the shortcomings of the prior art, this utility model provides a spray welding device for more uniform spray welding on the surface of a ball valve.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a ball surface spray welding device for ball valves, comprising a rotating machine, a clamping assembly, and a welding torch. The clamping assembly is connected to the rotating machine and further comprises an arc-shaped moving mechanism. The arc-shaped moving mechanism comprises an arc-shaped guide rod, a moving block, and a driving block. The arc-shaped guide rod is arranged around the clamping assembly. The welding torch is connected to the moving block. The driving block drives the moving block to move along the arc-shaped guide rod.

[0006] With this setup, when in use, the ball valve's ball is clamped onto the rotating machine by the clamping assembly and begins to rotate. During the rotation, the welding torch connected to the moving block will spray weld on the rotating ball. During the spray welding process, the drive block will drive the moving block to move in an arc along the arc-shaped guide rod. In this way, the welding torch can rotate around the back of the ball and spray weld evenly on all parts of the ball, even near the end, resulting in better performance.

[0007] Furthermore, the arc-shaped moving mechanism also includes a drive motor. The moving block has two side plates, which are adapted to the arc-shaped guide rod. The arc-shaped guide rod has rolling teeth on the side facing the clamping assembly. The drive block is a gear-shaped component that meshes with the rolling teeth. The drive block is rotatably connected between the two side plates. The drive motor drives the drive block to rotate.

[0008] With this setup, the moving block is inserted into the arc-shaped guide rod in a U-shape. After the gear-shaped drive block is installed, it can be stably installed on the arc-shaped guide rod. During operation, the drive motor will start, and the gear-shaped drive block will rotate between the two side plates, pushing against the rolling teeth on the arc-shaped guide rod. In this way, the moving block can slide along the arc-shaped guide rod by relying on the meshing process of the rolling teeth and the gear-shaped drive block. During the sliding process, the welding gun mounted on the moving block can spray welding around the sphere. The structure is simple.

[0009] Furthermore, the end of the movable block facing the arc-shaped guide rod is an arc surface, and the end of the movable block facing the arc-shaped guide rod is provided with a plurality of rolling balls disposed in the groove.

[0010] With this configuration, the moving block on the arc surface fits the outer side of the arc-shaped guide rod more closely and stably. The addition of several rolling balls reduces sliding friction and makes the sliding process smoother.

[0011] Furthermore, a driven gear that meshes with the rolling teeth is provided between the two side plates.

[0012] With this configuration, the driven gear and the gear-shaped drive block mesh simultaneously and are connected from two corners, making the moving block more stable. The driven gear only plays a stabilizing role and will rotate without being driven, so it will not get stuck.

[0013] Furthermore, the arc-shaped moving mechanism also includes an adjusting sleeve, which is connected to the moving block and is positioned toward the clamping assembly. The welding torch is slidably connected to the adjusting sleeve.

[0014] With this setup, the adjusting sleeve will be fixed to the moving block by welding or other methods, and then the welding torch can slide in the adjusting sleeve to adjust the distance between the welding torch nozzle and different spheres.

[0015] Furthermore, the adjusting sleeve is provided with a positioning bolt that penetrates its outer wall, communicates with the interior of the adjusting sleeve, and is threadedly connected to the through position.

[0016] With this setup, after the welding torch is positioned, the positioning bolts can be tightened to hold it in place, thus temporarily fixing its position and preventing it from sliding as the moving block moves. This makes it more stable and has a simple structure.

[0017] Furthermore, the rotating shaft of the rotating machine is arranged perpendicular to the ground, and the clamping assembly is located above the rotating mechanism.

[0018] With this configuration, the clamping component only needs to clamp the sphere through one of its channels. The sphere will then fall onto the clamping component due to gravity. Even if the sphere has a hole at one end and no hole at the other end, it can still be fixed. Furthermore, this application can also perform spray welding on that end.

[0019] Furthermore, the clamping assembly is a three-jaw chuck.

[0020] With this configuration, the stepped jaws of the three-jaw chuck will open from the inside to clamp the flow channel of the ball, resulting in a simple structure and stable clamping.

[0021] Furthermore, the clamping assembly is provided with a jaw sleeve, which is fitted onto the jaws of the three-jaw chuck.

[0022] With this design, the jaw sleeve can be made of a more heat-resistant material, which reduces the impact of welding. In addition, a softer material can be used, so that the ball will not be damaged when clamped. After long-term use, the jaw sleeve can be directly replaced without maintenance. Furthermore, the steps of the jaw sleeve can be set at different heights to raise the ball so that its center corresponds to the center of the arc-shaped guide rod.

[0023] Furthermore, the end of the claw sleeve facing away from the center of the clamping assembly has an arc surface.

[0024] With this design, the arc-shaped claw sleeve can more easily fit the inner wall of the sphere's flow channel and is less likely to damage it. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 1 .

[0026] Figure 2 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 2 .

[0027] Figure 3 This is a schematic diagram of the structure of the movable block according to an embodiment of the present utility model.

[0028] The labels in the diagram mean: 1. Rotating machine, 2. Clamping assembly, 201. Claw sleeve, 3. Welding torch, 4. Arc-shaped moving mechanism, 401. Arc-shaped guide rod, 4011. Rolling gear, 402. Moving block, 4021. Side plate, 4022. Rolling ball, 4023. Driven gear, 403. Drive block, 404. Drive motor, 405. Adjusting sleeve, 4051. Positioning bolt. Detailed Implementation

[0029] This specific embodiment is merely an explanation of the present embodiment and is not intended to limit the present embodiment. After reading this specification, those skilled in the art can make modifications to the present embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of the present embodiment.

[0030] Referring to the accompanying drawings, this utility model provides the following technical solution: a ball surface spray welding device for ball valves, comprising a rotating machine 1, a clamping assembly 2, and a welding torch 3. The clamping assembly 2 is connected to the rotating machine 1, and further comprises an arc-shaped moving mechanism 4. The arc-shaped moving mechanism 4 comprises an arc-shaped guide rod 401, a moving block 402, and a driving block 403. The arc-shaped guide rod 401 is arranged around the clamping assembly 2. The welding torch 3 is connected to the moving block 402. The driving block 403 drives the moving block 402 to move along the arc-shaped guide rod 401.

[0031] With this setup, when in use, the ball of the ball valve is clamped on the rotating machine 1 by the clamping component 2 and begins to rotate. During the rotation, the welding gun 3 connected to the moving block 402 will spray weld on the rotating ball. During the spray welding process, the driving block 403 will drive the moving block 402 to move in an arc shape along the arc-shaped guide rod 401. In this way, the welding gun 3 can rotate around the back of the ball and spray weld evenly on all parts of the ball. Even the parts near the end can be sprayed evenly, resulting in better effect.

[0032] In a preferred embodiment, the arc-shaped moving mechanism 4 further includes a drive motor 404. The moving block 402 is provided with two side plates 4021, which are adapted to the arc-shaped guide rod 401. The arc-shaped guide rod 401 is provided with rolling teeth 4011 on the side facing the clamping assembly 2. The drive block 403 is a gear-shaped component that meshes with the rolling teeth 4011. The drive block 403 is rotatably connected between the two side plates 4021 and the drive motor 404 drives the drive block 403 to rotate.

[0033] With this configuration, the movable block 402 will be inserted into the arc-shaped guide rod 401 in a U-shape. After the gear-shaped drive block 403 is installed, it can be stably installed on the arc-shaped guide rod 401. During operation, the drive motor 404 will start, and the gear-shaped drive block 403 will rotate between the two side plates 4021, pushing against the rolling teeth 4011 on the arc-shaped guide rod 401. In this way, the movable block 402 can slide along the arc-shaped guide rod 401 by relying on the meshing process of the rolling teeth 4011 and the gear-shaped drive block 403. During the sliding process, the welding gun 3 mounted on the movable block 402 can spray welding around the sphere. The structure is simple.

[0034] In this preferred embodiment, the end of the moving block 402 facing the arc-shaped guide rod 401 is an arc surface, and the end of the moving block 402 facing the arc-shaped guide rod 401 is provided with a plurality of rolling balls 4022 disposed in the groove.

[0035] With this configuration, the moving block 402 on the arc surface fits more closely to the outer side of the arc-shaped guide rod 401, making it more stable. The addition of several rolling balls 4022 reduces sliding friction and makes the sliding process smoother.

[0036] In a preferred embodiment, a driven gear 4023 that meshes with the rolling teeth 4011 is provided between the two side plates 4021.

[0037] With this configuration, the driven gear 4023 and the gear-shaped drive block 403 mesh simultaneously and are connected from two corners, making the moving block 402 more stable. The driven gear 4023 only plays a stabilizing role and will rotate without being driven, so it will not get stuck.

[0038] In a preferred embodiment, the arc-shaped moving mechanism 4 further includes an adjusting sleeve 405, which is connected to the moving block 402. The adjusting sleeve 405 is positioned toward the clamping assembly 2, and the welding torch 3 is slidably connected to the adjusting sleeve 405.

[0039] With this setup, the adjusting sleeve 405 will be fixed to the moving block 402 by welding or other means, and then the welding gun 3 can slide in the adjusting sleeve 405 to adjust the distance between the nozzle of the welding gun 3 and different balls.

[0040] In this preferred embodiment, the adjusting sleeve 405 is provided with a positioning bolt 4051 that penetrates its outer wall, communicates with the interior of the adjusting sleeve 405, and is threadedly connected to the through position.

[0041] With this configuration, after the welding torch 3 is adjusted to the correct position, the positioning bolt 4051 can be tightened to hold the welding torch 3 in place, thus temporarily fixing its position and preventing it from sliding as the moving block 402 moves. This makes it more stable and has a simple structure.

[0042] In this preferred embodiment, the rotating shaft of the rotating machine 1 is arranged perpendicular to the ground, and the clamping assembly 2 is located above the rotating machine 1.

[0043] With this configuration, the clamping component 2 only needs to clamp the ball through one of its channels. The ball will then fall onto the clamping component 2 due to gravity. Even if the ball has a hole at one end, it can still be fixed. Furthermore, this application can also perform spray welding on that end.

[0044] In this preferred embodiment, the clamping component 2 is a three-jaw chuck.

[0045] With this configuration, the stepped jaws of the three-jaw chuck will open from the inside to clamp the flow channel of the ball, resulting in a simple structure and stable clamping.

[0046] In this preferred embodiment, the clamping component 2 is provided with a jaw sleeve 201, which is sleeved on the jaw of the three-jaw chuck.

[0047] With this configuration, the jaw sleeve 201 can use a more heat-resistant material, which can reduce the impact of spray welding. In addition, a softer material can be used, so that the ball will not be damaged when clamped. After long-term use, the jaw sleeve 201 can be directly replaced without maintenance. Furthermore, the step of the jaw sleeve 201 can be set to different heights to raise the ball so that its center corresponds to the center of the arc-shaped guide rod 401. The above settings are not limited; the height of the rotating machine 1 or the arc-shaped guide rod 401 can also be changed by setting a height adjustment structure to achieve the center alignment effect.

[0048] In this preferred embodiment, the end of the claw sleeve 201 facing away from the center of the clamping assembly 2 is an arc surface.

[0049] With this design, the arc-shaped claw sleeve 201 can more easily fit the inner wall of the sphere's flow channel and is less likely to damage it.

[0050] Although the present invention has been described in detail with reference to the foregoing embodiments, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be included within the scope of protection of the present invention.

Claims

1. A ball surface spray welding device for a ball valve, comprising a rotating machine, a clamping assembly, and a welding torch, wherein the clamping assembly is connected to the rotating machine, characterized in that: It also includes an arc-shaped moving mechanism, which includes an arc-shaped guide rod, a moving block and a driving block. The arc-shaped guide rod is arranged around the clamping assembly. The welding torch is connected to the moving block. The driving block drives the moving block to move along the arc-shaped guide rod.

2. The ball surface spraying device for a ball valve according to claim 1, characterized in that: The arc-shaped moving mechanism also includes a drive motor. The moving block has two side plates, which are adapted to the arc-shaped guide rod. The arc-shaped guide rod has rolling teeth on the side facing the clamping assembly. The drive block is a gear-shaped component that meshes with the rolling teeth. The drive block is rotatably connected to the two side plates. The drive motor drives the drive block to rotate.

3. The ball surface spraying device for a ball valve according to claim 2, characterized in that: The end of the movable block facing the arc-shaped guide rod is an arc surface, and the end of the movable block facing the arc-shaped guide rod is provided with a number of rolling balls arranged in a groove.

4. The ball surface spraying device for a ball valve according to claim 2, characterized in that: A driven gear that meshes with the rolling teeth is provided between the two side plates.

5. The ball surface spraying device for a ball valve according to claim 1, characterized in that: The arc-shaped moving mechanism also includes an adjusting sleeve, which is connected to the moving block and is positioned toward the clamping assembly. The welding torch is slidably connected to the adjusting sleeve.

6. The ball surface spraying device for a ball valve according to claim 5, characterized in that: The adjusting sleeve is provided with a positioning bolt that penetrates its outer wall, communicates with the interior of the adjusting sleeve, and is threadedly connected to the through position.

7. The ball surface spraying device for a ball valve according to claim 1, characterized in that: The rotating shaft of the rotating machine is set perpendicular to the ground, and the clamping assembly is located above the rotating mechanism.

8. The ball surface spraying device for a ball valve according to claim 7, characterized in that: The clamping assembly is a three-jaw chuck.

9. A ball surface spraying device for a ball valve according to claim 8, characterized in that: The clamping assembly is provided with a jaw sleeve, which is fitted onto the jaws of the three-jaw chuck.

10. A ball surface spraying device for a ball valve according to claim 9, characterized in that: The end of the claw sleeve facing away from the center of the clamping assembly has an arc surface.

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