Portable valve sealing surface quick grinding repair tool

Abstract

The utility model relates to valve repair technical field especially, it is a kind of portable valve sealing surface quick grinding repair tool, its technical scheme includes: transmission mechanism, mounting mechanism, grinding mechanism and fastener, the transmission mechanism is used to drive mounting mechanism rotation, the mounting mechanism is used to carry grinding mechanism, the grinding mechanism is used to grind valve seat sealing surface, the fastener is used to fixed mounting mechanism and positioned grinding mechanism, the grinding mechanism includes self-adapting component and polishing assembly, the self-adapting component includes positioning frame and elastic piece, the positioning frame is located between upper shell and lower shell, the elastic piece is assembled in positioning frame;The polishing assembly includes slide bar and grinding head, the slide bar is worn between upper shell and lower shell, the slide bar is connected with elastic piece, the grinding head is assembled in the outer end of slide bar.The utility model solves the problem that a few repair tools of existing are poor in adaptability.

Description

Technical Field

[0001] This utility model relates to the field of valve repair technology, specifically a portable tool for rapid grinding and repair of valve sealing surfaces. Background Technology

[0002] Gate valves are key devices in industrial pipeline systems for achieving media cutoff and flow control, and their sealing performance directly affects the safety and stability of system operation. The valve seat sealing surface, as the core component for the sealing function of a gate valve, is prone to wear, scratches, and deformation during long-term use due to factors such as media erosion, mechanical friction, and temperature and pressure changes. This can lead to valve seal failure and affect the normal operation of the system. Therefore, effectively repairing damaged valve seat sealing surfaces is of significant practical importance.

[0003] Currently, the treatment of damaged valve seat sealing surfaces of gate valves mostly involves replacing the entire valve. Although this method can restore the sealing function, replacing the entire valve incurs high procurement costs, especially for valves of special specifications or materials, where the cost pressure is even more pronounced. Therefore, at present, repair tools are more often used to repair the valve seat sealing surfaces.

[0004] However, the few existing tools for repairing valve seat sealing surfaces are limited in terms of adaptability and ease of use, making it difficult to meet the repair needs of valves of different specifications.

[0005] To address this issue, a portable valve sealing surface rapid grinding and repair tool is proposed. Utility Model Content

[0006] The purpose of this invention is to provide a portable tool for rapid grinding and repair of valve sealing surfaces, which has the advantage of being adaptable to valve seat sealing surfaces of various sizes, and solves the problem of poor adaptability of some existing repair tools.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a portable valve sealing surface rapid grinding and repair tool, comprising a transmission mechanism, a mounting mechanism, a grinding mechanism, and fasteners. The transmission mechanism drives the mounting mechanism to rotate, the mounting mechanism supports the grinding mechanism, the grinding mechanism grinds the valve seat sealing surface, and the fasteners fix the mounting mechanism and position the grinding mechanism. The transmission mechanism includes a transmission rod and a connecting plate, and the connecting plate is provided with a snap-fit ​​bracket. The grinding mechanism includes an adaptive component and a grinding component. The adaptive component includes a positioning frame and a spring element. The positioning frame is disposed between the upper and lower housings, and the spring element is assembled on the positioning frame. The grinding component includes a sliding rod and a grinding head. The sliding rod passes between the upper and lower housings and is connected to the spring element. The grinding head is assembled on the outer end of the sliding rod.

[0008] Preferably, the mounting mechanism includes an upper housing and a lower housing, the upper housing has an upper mounting hole, the lower housing has a lower mounting hole, and the fastener passes through the upper mounting hole and the lower mounting hole to fix the upper housing and the lower housing.

[0009] In the design, this structure enables a detachable and fixed connection between the upper and lower shells, which has the advantage of convenient assembly and disassembly, and will make it easier to maintain, repair or replace parts of the internal grinding mechanism of the mounting mechanism in the future.

[0010] Preferably, the upper end face of the upper housing is provided with a snap-fit ​​groove that is adapted to the snap-fit ​​bracket, and the snap-fit ​​bracket engages with the snap-fit ​​groove to realize the linkage between the connecting plate and the upper housing.

[0011] In the design, this interlocking mechanism enables rapid linkage between the transmission mechanism and the mounting mechanism, providing direct and stable power transmission. It effectively prevents slippage during transmission and facilitates quick disassembly of the transmission mechanism and mounting mechanism, improving the flexibility of tool use.

[0012] Preferably, the bottom surface of the upper housing is provided with an upper sliding groove in the radial direction, and the periphery of the lower housing is provided with a lower sliding groove in the radial direction. The upper sliding groove and the lower sliding groove are aligned, and the sliding rod passes through the upper sliding groove and the lower sliding groove.

[0013] In the design, the cooperation between the groove and the slide rod enables the slide rod to slide radially in a directional manner, which has the advantage of ensuring the accuracy of the grinding head's extension and retraction direction. It can avoid uneven contact between the grinding head and the valve seat sealing surface caused by the slide rod sliding off-center, thereby improving the accuracy of grinding and repair.

[0014] Preferably, the inner side of the upper housing is provided with an upper limit groove corresponding to the position of the upper sliding groove, and the inner side of the lower housing is provided with a lower limit groove corresponding to the position of the lower sliding groove. The side of the slide rod is provided with a limiting ridge that is adapted to the upper limit groove and the lower limit groove, and the limiting ridge is embedded in the upper limit groove and the lower limit groove.

[0015] In the design, the cooperation of this limiting structure effectively restricts the sliding stroke of the slide bar, which has the advantage of preventing the slide bar from coming out of the slide groove due to excessive centrifugal force. This ensures the structural safety of the grinding mechanism during operation and avoids damage to the valve seat or tool itself caused by excessive extension of the grinding head.

[0016] Preferably, the positioning frame has a through hole at its center, and the fastener passes through the through hole to achieve positioning of the positioning frame between the upper and lower housings.

[0017] In the design, this through-fitting mechanism enables the positioning frame to be precisely positioned between the upper and lower housings. It has the advantage of ensuring the stable installation position of the positioning frame and the elastic components mounted on it, and can avoid uneven force on the grinding components caused by the offset of the adaptive components. This ensures that the grinding force of each grinding component is consistent and improves the uniformity of the grinding and repair of the valve seat sealing surface.

[0018] Preferably, the inner end of the slide bar is provided with a mounting hole, and the end of the elastic member away from the positioning frame is assembled into the mounting hole to realize the connection between the elastic member and the slide bar.

[0019] In the design, this assembly and fit achieves a reliable connection between the elastic component and the slide bar, which has the advantage of ensuring the stable transmission of the reset pull force of the elastic component to the slide bar. It can avoid the slide bar from failing to reset due to loose connection between the two, and also facilitates the subsequent disassembly and replacement of aging or damaged elastic components.

[0020] Preferably, the connecting plate is fixedly installed at the lower end of the transmission rod, the snap-fit ​​bracket and the connecting plate are integrally formed, and the snap-fit ​​bracket is distributed along the periphery of the connecting plate.

[0021] In this design, the overall structural strength of the transmission mechanism is improved and the power is transmitted evenly. It has the advantage of enhancing the connection stability between the connecting plate and the transmission rod, and can prevent component breakage during transmission. At the same time, the circumferentially distributed snap-fit ​​bracket can evenly transmit the power of the transmission rod to the upper housing, ensuring the stability of the installation mechanism when it rotates at high speed, and further improving the precision of grinding and repair.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model includes a transmission mechanism, an installation mechanism, a grinding mechanism, and fasteners. The transmission mechanism includes a transmission rod that can drive the installation mechanism to rotate and a connecting plate with a snap-fit ​​bracket. The grinding mechanism includes an adaptive component consisting of a positioning frame and an elastic element, and a grinding component consisting of a sliding rod and a grinding head. The positioning frame is located between the upper and lower housings of the installation mechanism, and the sliding rod passes through the upper and lower housings and is connected to the elastic element. When the transmission mechanism drives the installation mechanism to rotate at high speed, the centrifugal force can push the slide rod to slide outward along the space between the upper and lower housings, so that the grinding head contacts the valve seat sealing surface. The elastic component can adaptively adjust the extension length of the slide rod according to the requirements of different sized valve seat sealing surfaces, ensuring that the grinding head is always reliably in contact with the valve seat sealing surface. This achieves the effect of adapting to valve seat sealing surfaces of various sizes, effectively solving the problem that some existing repair tools can only be adapted to valve seat sealing surfaces of specific specifications and have poor adaptability. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the adaptive component structure of this utility model; Figure 3 This is a schematic cross-sectional view of the grinding component of this utility model; Figure 4 This is an exploded view of the installation mechanism of this utility model. Figure 5 This is an exploded view of the installation mechanism of this utility model. Figure 6 This is a schematic diagram of the operation of this utility model.

[0024] In the diagram: 1. Transmission mechanism; 11. Transmission rod; 12. Connecting plate; 121. Snap-fit ​​bracket; 2. Mounting mechanism; 21. Upper housing; 211. Reserved slot; 212. Snap-fit ​​slot; 213. Upper sliding groove; 214. Upper clamping groove; 215. Upper limit groove; 216. Upper mounting hole; 22. Lower housing; 221. Lower clamping groove; 222. Lower sliding groove; 223. Lower limit groove; 224. Lower mounting hole; 3. Fastener; 4. Grinding mechanism; 41. Adaptive component; 411. Positioning bracket; 412. Elastic component; 413. Through hole; 42. Grinding component; 421. Grinding head; 422. Sliding rod; 423. Mounting hole; 424. Limiting edge. Detailed Implementation

[0025] 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. Example

[0026] like Figures 1 to 6 As shown, one embodiment of this utility model is a portable valve sealing surface quick grinding and repair tool, which includes a transmission mechanism 1, a mounting mechanism 2 driven by the transmission mechanism 1, and a grinding mechanism 4 installed in the mounting mechanism 2. It also includes fasteners 3 for fixing the mounting mechanism 2 and positioning the grinding mechanism 4. The transmission mechanism 1 includes a transmission rod 11 and a connecting plate 12. The transmission rod 11 is a cylindrical hexagonal metal rod with a connecting section at the upper end that is compatible with a common power tool chuck. The lower end of the transmission rod 11 is fixedly mounted with the connecting plate 12, which is a circular metal plate used to transmit the torque power of the transmission rod 11 to the mounting mechanism 2. The bottom periphery of the connecting plate 12 is integrally formed with a snap-fit ​​bracket 121. The snap-fit ​​bracket 121 is a protruding structure and is distributed in a ring array along the bottom periphery of the connecting plate 12. It is used for snap-fit ​​positioning of the transmission mechanism 1 and the mounting mechanism 2, and the number of snap-fit ​​brackets 121 is adapted to the number of snap-fit ​​grooves 212 on the upper housing 21. The mounting mechanism 2 includes an upper housing 21 and a lower housing 22, both of which are housing structures adapted to the internal space of the valve seat. They are made of lightweight, high-strength metal and have been treated with anti-corrosion coating. They are fixedly connected to the upper housing 21 and the lower housing 22 through the upper mounting hole 216 and the lower mounting hole 224. The upper mounting hole 216 and the lower mounting hole 224 are both through holes and are coaxially arranged to ensure that the upper and lower housings are subjected to uniform force after the fastener 3 is inserted. The upper end face of the upper housing 21 is provided with snap-fit ​​grooves 212 in a ring array. The snap-fit ​​grooves 212 are groove structures adapted to the snap-fit ​​bracket 121 and are used to snap-fit ​​with the snap-fit ​​bracket 121 to realize the synchronous linkage between the connecting plate 12 and the upper housing 21. The bottom of the snap-fit ​​grooves 212 is provided with an anti-slip structure to enhance the anti-slip ability after snap-fit. The top of the upper housing 21 is provided with a reserved groove 211, which is a groove coaxial with the upper mounting hole 216. It is used to provide operating space for the installation of the nut of the fastener 3. The bottom of the reserved groove 211 is connected to the upper opening of the upper mounting hole 216, allowing the rod of the fastener 3 to pass through. The upper mounting hole 216 opened in the reserved groove 211 is coaxial with the lower mounting hole 224 in the center of the lower housing 22, allowing the fastener 3 to pass through to complete the fixation of the upper and lower housings. At the same time, the rod of the fastener 3 passes through the upper mounting hole 216, the through hole 413 of the positioning frame 411 and the lower mounting hole 224 in sequence to axially position the mounting mechanism 2 and the internal grinding mechanism 4. The bottom surface of the upper housing 21 is provided with an upper sliding groove 213 along the radial direction, and the upper sliding groove 213 is distributed in a ring array along the periphery of the bottom surface of the upper housing 21. The periphery of the lower housing 22 is provided with a lower sliding groove 222 along the radial direction. The lower sliding groove 222 is a channel with the same structure as the upper sliding groove 213, and is distributed in a ring array along the periphery of the lower housing 22. The upper sliding groove 213 and the lower sliding groove 222 are aligned one-to-one, and together provide sliding guidance for the slide rod 422 of the grinding assembly 42, ensuring that the slide rod 422 slides smoothly in the radial direction. The inner wall of the upper housing 21 is provided with an upper limit groove 215 corresponding to the position of the upper sliding groove 213. The upper limit groove 215 is a groove structure that extends along the length of the upper sliding groove 213. The inner wall of the lower housing 22 is provided with a lower limit groove 223 corresponding to the position of the lower sliding groove 222. The lower limit groove 223 is a groove with the same structure as the upper limit groove 215 and is aligned vertically with the upper limit groove 215. It is used to limit the sliding stroke of the grinding component 42 and prevent the slide rod 422 from extending or retracting excessively. The bottom center of the upper housing 21 has an upper clamping groove 214, which is an arc-shaped groove structure; the top center of the lower housing 22 has a lower clamping groove 221, which is an arc-shaped groove with the same structure as the upper clamping groove 214. The upper clamping groove 214 and the lower clamping groove 221 are arranged opposite to each other and form a circular clamping space after splicing. This space is adapted to the shape of the positioning frame 411 and realizes radial clamping and positioning of the positioning frame 411 in the grinding assembly 42. At the same time, it can prevent radial shaking when the slide rod 422 slides. The grinding mechanism 4 is used to grind and repair the sealing surface of the valve seat of the shut-off valve, including the adaptive component 41 and the grinding component 42 mounted on the adaptive component 41. The adaptive component 41 includes a positioning frame 411 and an elastic element 412. The positioning frame 411 is a frame structure and is installed between the upper housing 21 and the lower housing 22. The upper and lower end faces of the positioning frame 411 are respectively in contact with the inner top surface of the upper housing 21 and the inner bottom surface of the lower housing 22 to ensure the stable installation of the positioning frame 411. A through hole 413 is provided in the center of the positioning frame 411. The through hole 413 is a hole structure adapted to the fastener 3 rod body, allowing the fastener 3 to pass through to achieve coaxial positioning of the positioning frame 411 and prevent the positioning frame 411 from shifting within the installation mechanism 2. A spring element 412 is fixedly installed radially on the periphery of the positioning frame 411. The spring element 412 is an elastic component with a reset function. It can be designed as a compression spring. One end of the spring element 412 is fixedly installed on the positioning frame 411, and the other end is connected to the mounting hole 423 of the grinding assembly 42. It is used to pull the grinding assembly 42 back to the center when the centrifugal force is lost, so that the grinding assembly 42 can be retracted after the tool is used. The grinding assembly 42 includes a slide rod 422 and a grinding head 421. The slide rod 422 is a rod-shaped structure that passes through the upper sliding groove 213 of the upper housing 21 and the lower sliding groove 222 of the lower housing 22. It is adapted to the groove walls of the two sliding grooves and has a clearance fit to achieve sliding guidance so as to drive the grinding head 421 to extend and retract radially. The upper part of the slide rod 422 is integrally formed with a limiting edge 424. The limiting edge 424 is a protruding structure that is adapted to the upper limiting groove 215 and the lower limiting groove 223. It is embedded in the upper limiting groove 215 of the upper housing 21 and the lower limiting groove 223 of the lower housing 22. It works in conjunction to limit the sliding stroke of the grinding component 42, prevent the slide rod 422 from coming out of the groove, and prevent the slide rod 422 from rotating. The slide bar 422 has a mounting hole 423 at one end near the positioning frame 411. The mounting hole 423 is a hole structure that is adapted to the end of the elastic member 412. It is used to install the end of the elastic member 412 to achieve a reliable connection with the adaptive component 41 and prevent the elastic member 412 from detaching from the slide bar 422. A grinding head 421 is fixedly installed at the end of the slide rod 422 away from the positioning frame 411. The grinding head 421 is a component with grinding function. Its outer end face is shaped to match the valve seat sealing surface and is used to directly contact the valve seat sealing surface for grinding. The grinding head 421 is fixedly installed at the outer end of the slide rod 422 to ensure that the grinding head 421 is stable and does not fall off during the grinding process.

[0027] When this utility model is used, the installation mechanism 2 is placed inside the valve seat, and the transmission rod 11 of the transmission mechanism 1 is connected to tools such as electric screwdrivers. By starting the electric screwdriver, the connecting plate 12 is driven to rotate, and the connecting plate 12 drives the installation mechanism 2 to rotate at high speed through the cooperation of the snap-fit ​​bracket 121 and the snap-fit ​​groove 212. Under the action of centrifugal force, the slide bar 422 of the grinding assembly 42 slides outward along the upper slide groove 213 and the lower slide groove 222, while the limiting edge 424 slides along the upper limiting groove 215 and the lower limiting groove 223. At this time, under the action of centrifugal force, the grinding head 421 contacts the valve seat sealing surface, and the elastic element 412 is stretched. By continuously rotating, the grinding head 421 grinds and repairs the valve seat sealing surface. Then, the electric screwdriver decelerates, the centrifugal force decreases, and the elastic element 412 pulls the grinding assembly 42 to reset, separating the grinding head 421 from the valve seat, thus facilitating tool removal. Furthermore, since the grinding assembly 42 can adaptively extend to different lengths, it can adapt to various sizes of valve seat sealing surfaces, improving tool adaptability.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A portable tool for rapid grinding and repair of valve sealing surfaces, comprising a transmission mechanism (1), a mounting mechanism (2), a grinding mechanism (4), and fasteners (3), wherein the transmission mechanism (1) drives the mounting mechanism (2) to rotate, the mounting mechanism (2) supports the grinding mechanism (4), the grinding mechanism (4) grinds the valve seat sealing surface, and the fasteners (3) fix the mounting mechanism (2) and position the grinding mechanism (4), characterized in that: The transmission mechanism (1) includes a transmission rod (11) and a connecting plate (12), and the connecting plate (12) is provided with a snap-fit ​​bracket (121); the grinding mechanism (4) includes an adaptive component (41) and a grinding component (42), the adaptive component (41) includes a positioning frame (411) and an elastic element (412), the positioning frame (411) is located between the upper housing (21) and the lower housing (22), and the elastic element (412) is assembled on the positioning frame (411); the grinding component (42) includes a sliding rod (422) and a grinding head (421), the sliding rod (422) passes through the upper housing (21) and the lower housing (22), the sliding rod (422) is connected to the elastic element (412), and the grinding head (421) is assembled on the outer end of the sliding rod (422).

2. The portable valve sealing surface rapid grinding and repair tool according to claim 1, characterized in that, The mounting mechanism (2) includes an upper housing (21) and a lower housing (22). The upper housing (21) has an upper mounting hole (216), and the lower housing (22) has a lower mounting hole (224). The fastener (3) passes through the upper mounting hole (216) and the lower mounting hole (224) to fix the upper housing (21) and the lower housing (22).

3. The portable valve sealing surface rapid grinding and repair tool according to claim 2, characterized in that, The upper end face of the upper housing (21) is provided with a snap-fit ​​groove (212) that is adapted to the snap-fit ​​bracket (121). The snap-fit ​​bracket (121) engages with the snap-fit ​​groove (212) to realize the linkage between the connecting plate (12) and the upper housing (21).

4. The portable valve sealing surface rapid grinding and repair tool according to claim 2, characterized in that, The bottom surface of the upper housing (21) is provided with an upper sliding groove (213) in the radial direction, and the periphery of the lower housing (22) is provided with a lower sliding groove (222) in the radial direction. The upper sliding groove (213) and the lower sliding groove (222) are aligned. The sliding rod (422) passes through the upper sliding groove (213) and the lower sliding groove (222).

5. A portable valve sealing surface rapid grinding and repair tool according to claim 4, characterized in that, The upper housing (21) has an upper limit groove (215) on its inner side corresponding to the upper slide groove (213), and the lower housing (22) has a lower limit groove (223) on its inner side corresponding to the lower slide groove (222). The slide rod (422) has a limiting ridge (424) on its side that is adapted to the upper limit groove (215) and the lower limit groove (223). The limiting ridge (424) is embedded in the upper limit groove (215) and the lower limit groove (223).

6. The portable valve sealing surface rapid grinding and repair tool according to claim 1, characterized in that, The positioning frame (411) has a through hole (413) in the center, and the fastener (3) passes through the through hole (413) to realize the positioning frame (411) between the upper shell (21) and the lower shell (22).

7. The portable valve sealing surface rapid grinding and repair tool according to claim 1, characterized in that, The inner end of the slide bar (422) is provided with a mounting hole (423), and the end of the elastic member (412) away from the positioning frame (411) is assembled in the mounting hole (423) to realize the connection between the elastic member (412) and the slide bar (422).

8. A portable valve sealing surface rapid grinding and repair tool according to claim 1, characterized in that, The connecting plate (12) is fixedly installed at the lower end of the transmission rod (11). The snap-fit ​​bracket (121) and the connecting plate (12) are integrally formed, and the snap-fit ​​bracket (121) is distributed along the periphery of the connecting plate (12).

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