A track ball valve polishing maintenance device suitable for narrow space

Abstract

The utility model relates to track ball valve polishing maintenance device technical field, concretely relates to a track ball valve polishing maintenance device suitable for narrow space, including device main part, the end part mounting of device main part has universal joint, device main part has the flexible guide arm through the universal joint swing joint, the end part fixed of flexible guide arm has the execution end, the side of execution end is fixed with the execution head, the side of execution head is fixed with the assembly seat, the side screw thread of assembly seat installs and polishes the head, the utility model discloses through the setting of flexible guide arm cooperation universal joint, makes execution end flexible bypasses the obstacle in narrow space and locks the position, provides stable operating platform for polishing head, wherein the threaded block and the threaded groove threaded connection of polishing head utilize threaded block and threaded groove realize and assembly seat modularization installation, can replace other forms of polishing operation component quickly in later period, to adapt to different damage degree and part requirement.

Description

Technical Field

[0001] This utility model relates to the technical field of polishing and maintenance devices for track ball valves, specifically to a polishing and maintenance device for track ball valves suitable for confined spaces. Background Technology

[0002] Orbital ball valves, as high-performance valves that achieve sealing through a unique opening and closing mechanism where the valve ball first detaches from the valve seat and then rotates, are widely used in harsh operating conditions due to their advantages such as low wear, good sealing performance, and low operating torque. However, the precision spherical surfaces of its core sealing components—the valve ball and the valve seat ring—are prone to scratches or wear after long-term use, requiring periodic polishing and repair to maintain sealing performance.

[0003] Traditional polishing methods often require disassembling the entire valve from the pipeline and transporting it to the workshop, where experienced technicians perform the work manually. This method has drawbacks such as long downtime, difficulty in disassembly and alignment, high labor intensity, and polishing quality that depends on individual skills. It cannot adequately maintain valves installed in confined spaces on-site, requiring on-site disassembly of the valve body structure for polishing maintenance, which increases the maintenance cycle, operational difficulty, and cost.

[0004] Therefore, it is necessary to invent a polishing and maintenance device for track ball valves suitable for confined spaces to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a polishing and maintenance device for track ball valves suitable for confined spaces. Through the flexible guide arm and universal joint, the actuator can flexibly bypass obstacles within the confined space and lock into position, providing a stable operating platform for the polishing head. The polishing head utilizes a threaded block and threaded groove connection to achieve modular installation with the mounting base, allowing for quick replacement of other polishing operation components to adapt to different damage levels and location requirements. The polishing operation of the polishing head, combined with a built-in dust collection system consisting of a suction head, hose, miniature negative pressure pump, and filter bag, effectively recovers dust and debris concentrated in the dust cover area, meeting environmental and safety requirements in confined spaces. These technologies collectively ensure efficient and safe polishing and maintenance of track ball valves within confined spaces. This allows for efficient and uniform mirror polishing of the outer surface of the ball and the inner surface of the valve seat without disassembling the valve, solving the problem of existing technologies that cannot adequately maintain valves installed in confined spaces, requiring on-site disassembly of the valve body for polishing and maintenance, increasing maintenance cycles, operational difficulty, and costs.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a polishing and maintenance device for a ball valve in a confined space, comprising a device body, a universal joint installed at the end of the device body, a flexible guide arm movably connected to the device body via the universal joint, an execution end fixed at the end of the flexible guide arm, an execution head fixed to the side of the execution end, an assembly seat fixed to the side of the execution head, a polishing head threadedly mounted on the side of the assembly seat, a threaded groove formed on the surface of the assembly seat, a threaded block matching the threaded groove fixed to the side of the polishing head, a dust cover fixedly connected to the side of the execution end and located outside the execution head, and a suction head symmetrically fixed to the side of the execution end and located inside the dust cover, with a flexible hose penetrating the flexible guide arm fixedly connected to the side of the suction head.

[0007] Preferably, a handle is fixedly connected to the end of the device body away from the universal joint, and a miniature negative pressure pump is installed at the top and bottom of the handle. The miniature negative pressure pump is connected to a hose, and a filter bag is installed on the side of the miniature negative pressure pump.

[0008] Preferably, a servo motor is installed inside the execution head, and the output shaft of the servo motor is fixedly connected to a rotating rod via a coupling. The end of the rotating rod is fixedly connected to the mounting base.

[0009] Preferably, the mounting base is symmetrically equipped with an endoscopic camera lens and an LED light located above and below the polishing head on its side.

[0010] Preferably, the actuator is internally equipped with a force sensor, a displacement sensor, a miniature laser interferometer, and an optical sensor.

[0011] The technical effects and advantages provided by this utility model in the above technical solution are as follows: 1. By using a flexible guide arm in conjunction with a universal joint, the end effector can flexibly bypass obstacles in confined spaces and lock its position, providing a stable operating platform for the polishing head. The polishing head is modularly installed with the mounting base using threaded blocks and threaded grooves. Other types of polishing operation components can be quickly replaced later to adapt to different damage levels and location requirements. The polishing operation of the polishing head, together with the built-in dust collection system consisting of a dust suction head, hose, miniature negative pressure pump and filter bag, can effectively collect dust and debris concentrated in the area inside the dust cover, meeting the environmental protection and safety requirements in confined spaces. These technologies together ensure the efficient and safe polishing and maintenance of the device in the confined space of the track valve ball, enabling efficient and uniform mirror polishing of the outer surface of the ball and the inner surface of the valve seat without disassembling the valve. 2. By setting up and coordinating endoscopic cameras and LED lighting, the vision integration system provides a real-time high-definition field of view, enabling operators to accurately observe and locate the damaged area of ​​the ball valve. The hybrid adaptive control of force and displacement sensors can automatically maintain a constant polishing pressure, ensuring the consistency of polishing quality for irregular spherical surfaces. The combination of micro laser interferometer and optical sensor functions allows surface roughness to be monitored online, achieving result-oriented closed-loop control and preventing over-polishing. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a frontal planar structural diagram of the present invention; Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a schematic diagram of the cross-sectional structure of the execution end and the connection between the dust cover and the hose of this utility model; Figure 5 This is a schematic diagram of the universal joint structure of this utility model.

[0014] Explanation of reference numerals in the attached figures: 1. Main body of the device; 2. Universal joint; 3. Flexible guide arm; 4. Actuating end; 5. Actuating head; 6. Mounting base; 7. Polishing head; 8. Threaded groove; 9. Threaded block; 10. Dust cover; 11. Dust suction head; 12. Hose; 13. Handle; 14. Miniature negative pressure pump; 15. Filter bag; 16. Servo motor; 17. Rotating rod; 18. Endoscopic camera lens; 19. LED lighting lamp; 20. Force sensor; 21. Displacement sensor; 22. Miniature laser interferometer; 23. Optical sensor. Detailed Implementation

[0015] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0016] This utility model provides, for example Figure 1-5The device shown is a polishing and maintenance device for a ball valve in a confined space. It includes a device body 1, a universal joint 2 installed at the end of the device body 1, and a flexible guide arm 3 movably connected to the device body 1 through the universal joint 2. The universal joint 2 and the flexible guide arm 3 cooperate to achieve universal rotation to adjust the output angle. At the same time, the flexible structure can be used to flexibly extend into the confined space and bypass the obstruction structure to accurately reach the position of the ball valve that needs to be polished. The flexible guide arm 3 is fixed with an execution end 4, the execution end 4 is fixed with an execution head 5, the execution head 5 is fixed with an assembly seat 6, the assembly seat 6 is threadedly installed with a polishing head 7, the surface of the assembly seat 6 is provided with a threaded groove 8, and the polishing head 7 is fixed with a threaded block 9 that matches the threaded groove 8. It supports a variety of polishing components, such as: cup-shaped grinding wheels / wool wheels for spherical surfaces, cup-shaped brushes for valve seats, strip sandpaper for specific areas, and magnetic polishing heads that use magnetorheological fluid for ultra-precision polishing. It is necessary to ensure that all polishing components are installed with threaded blocks 9 that match the threaded groove 8 at the assembly parts. A dust cover 10 located outside the execution head 5 is fixedly connected to the side of the execution end 4. The dust cover 10 is designed to facilitate the better concentration of dust and debris generated by the polishing head 7 during grinding and polishing, thereby improving the dust collection effect. A suction head 11 is symmetrically fixed to the side of the execution end 4, located inside the dust cover 10. A flexible hose 12 that passes through the flexible guide arm 3 is fixedly connected to the side of the suction head 11.

[0017] A handle 13 is fixedly connected to the end of the main body 1 away from the universal joint 2. A miniature negative pressure pump 14 is installed at the top and bottom of the handle 13. The miniature negative pressure pump 14 is connected to the hose 12. A filter bag 15 is installed on the side of the miniature negative pressure pump 14. When the miniature negative pressure pump 14 is started, the debris and dust in the dust cover 10 pass through the suction head 11 and the hose 12 and are finally collected and processed by the filter bag 15.

[0018] The execution head 5 is equipped with a servo motor 16. The output shaft of the servo motor 16 is fixedly connected to a rotating rod 17 via a coupling. The end of the rotating rod 17 is fixedly connected to the mounting base 6.

[0019] The mounting base 6 is symmetrically equipped with an endoscope camera 18 and an LED light 19 located above and below the polishing head 7, allowing the operator to accurately observe the status of the sealing surface, locate the damaged area, monitor the polishing process, and finally accept the polishing effect through real-time video, completely eliminating "blind operation".

[0020] The internal actuator 4 is equipped with a force sensor 20, a displacement sensor 21, a miniature laser interferometer 22, and an optical sensor 23. The coordinated setup of the force sensor 20 and the displacement sensor 21 ensures the stability and consistency of polishing quality, making it particularly suitable for irregular or slightly elliptical spherical surfaces. The coordinated setup of the miniature laser interferometer 22 and the optical sensor 23 achieves result-oriented closed-loop control. When the system detects that the target roughness has been reached, it can automatically stop working to prevent over-polishing, greatly improving efficiency and accuracy.

[0021] The working principle of this practical application is as follows: The flexible guide arm 3 and the polishing head 7 are fed into the track tube together. During this process, the angle can be adjusted in all directions using the universal joint 2, and the flexible guide arm 3 can be bent and adjusted freely until the polishing head 7 contacts the position in the ball valve that needs to be polished. Then, the servo motor 16 is started to drive the polishing head 7 to rotate in conjunction with the rotating rod 17 to perform the polishing work. During this process, the micro negative pressure pump 14 is started, and the dust and debris generated by polishing and grinding in the dust cover 10 can be sucked into the filter bag 15 for collection and treatment using the dust suction head 11 and the hose 12.

[0022] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A polishing maintenance device for track ball valves suitable for narrow spaces, comprising a device body (1), characterized in that: A universal joint (2) is installed at the end of the main body (1) of the device. A flexible guide arm (3) is movably connected to the main body (1) through the universal joint (2). An execution end (4) is fixed at the end of the flexible guide arm (3). An execution head (5) is fixed on the side of the execution end (4). An assembly seat (6) is fixed on the side of the execution head (5). A polishing head (7) is threaded on the side of the assembly seat (6). A threaded groove (8) is opened on the surface of the assembly seat (6). A threaded block (9) matching the threaded groove (8) is fixed on the side of the polishing head (7). A dust cover (10) located outside the execution head (5) is fixedly connected to the side of the execution end (4). A suction head (11) located inside the dust cover (10) is symmetrically fixed on the side of the execution end (4). A hose (12) penetrating the flexible guide arm (3) is fixedly connected to the side of the suction head (11).

2. A polishing maintenance device for a trackball valve in a narrow space according to claim 1, characterized in that: The device body (1) is fixedly connected to a handle (13) at one end away from the universal joint (2). A miniature negative pressure pump (14) is installed at the top and bottom of the handle (13). The miniature negative pressure pump (14) is connected to a hose (12). A filter bag (15) is installed on the side of the miniature negative pressure pump (14).

3. A polishing maintenance device for trackball valves in tight spaces according to claim 1, characterized in that: The execution head (5) is equipped with a servo motor (16), and the output shaft of the servo motor (16) is fixedly connected to a rotating rod (17) via a coupling. The end of the rotating rod (17) is fixedly connected to the mounting base (6).

4. A polishing maintenance device for a ball valve in a narrow space according to claim 1, characterized in that: The mounting base (6) is symmetrically equipped with an endoscope camera (18) and an LED light (19) located above and below the polishing head (7).

5. A polishing maintenance device for a ball valve in a narrow space according to claim 1, characterized in that: The actuator (4) is internally equipped with a force sensor (20), a displacement sensor (21), a miniature laser interferometer (22), and an optical sensor (23).

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