Grinding and repairing device for the sealing surface of a gate valve

Abstract

The utility model relates to valve maintenance equipment technical field, concretely is the grinding repair device of gate valve sealing surface, including operation platform, the operation platform top rotatory installation has one clamping mechanism, the operation platform top is located clamping mechanism and is equipped with one mounting plate, mounting plate bottom four corners all are fixed with one support column, support column bottom is fixed in operation platform top, mounting plate top installs one adjusting assembly. The utility model through setting rotatable clamping mechanism and the grinding assembly of multidimensional adjustment, realized the multi -angle, multi -position grinding repair of gate valve sealing surface. The clamping mechanism of operation platform top can drive gate valve rotation, cooperation mounting plate bottom adjusting assembly (movable block can move up and down, before and after), make grinding head can accurate alignment sealing surface any position, hydraulic cylinder still can adjust grinding pressure, significantly improve the repair accuracy and flexibility.

Description

Technical Field

[0001] This utility model relates to the technical field of valve repair equipment, specifically a grinding and repair device for the sealing surface of a gate valve. Background Technology

[0002] Gate valves are commonly used opening and closing devices in pipeline systems. Their sealing performance directly affects the efficiency and safety of pipeline media transportation. The sealing surface, as the core part of the gate valve to achieve the sealing function, is prone to wear, scratches, dents and other damage due to factors such as media scouring, friction and corrosion during long-term use, which can lead to gate valve sealing failure and require repair.

[0003] Among the prior art, there is a conveniently fixed gate valve grinding machine disclosed in patent application number CN202222651399.2. The conveniently fixed gate valve grinding machine includes a grinding machine upper body, the grinding machine upper body includes a fixed base, a limiting shaft is fixedly installed on the lower surface of the fixed base, a connecting column is fixedly installed on the lower surface of the fixed base, the connecting column is rotatably connected to a screw through a thread, one end of the screw is provided with a pressing component, the other end of the screw is fixedly installed with a connecting rod, and one end of the connecting rod is fixedly installed with a handle. This invention, through the installation of this device, allows personnel to place the fixed base on the outside of the valve, enabling the limiting shaft to abut against one side of the valve. A handle allows personnel to rotate the device by placing their hand on the outside of the handle, pushing the extrusion assembly to move without significant swaying, thereby fixing the fixed base to the outside of the valve. However, in actual use, the grinding head is fixed in position and cannot be adjusted, preventing grinding of different positions on the gate valve's sealing surface. Furthermore, the device lacks a clamping mechanism for fixing the gate valve, resulting in unstable gate valve fixation during use and affecting the grinding effect.

[0004] In view of this, we propose a grinding and repair device for the sealing surface of gate valves. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a grinding and repair device for the sealing surface of a gate valve.

[0006] The technical solution of this utility model is: A grinding and repair device for the sealing surface of a gate valve includes an operating table. A clamping mechanism is rotatably mounted on the top of the operating table. A mounting plate is located on the top of the operating table, adjacent to the clamping mechanism. A support column is fixed at each of the four corners of the bottom of the mounting plate, with the bottom of each support column fixed to the top of the operating table. An adjusting component is mounted on the top of the mounting plate. The adjusting component includes a mounting frame fixed to the top of the mounting plate. A movable block that can move up and down and back and forth is mounted inside the mounting frame. A hydraulic cylinder is fixedly connected to the left outer wall of the movable block. A first motor frame is fixedly connected to the end of the piston rod of the hydraulic cylinder. A grinding motor is mounted inside the first motor frame. A rotating shaft is fixed to the output shaft of the grinding motor, and a grinding head is fixedly mounted on the rotating shaft by bolts. By setting up a rotatable clamping mechanism and a multi-dimensionally adjustable grinding component, multi-angle and multi-position grinding and repair of the gate valve sealing surface can be achieved. The clamping mechanism on the top of the operating table can drive the gate valve to rotate. Combined with the adjusting component at the bottom of the mounting plate (the movable block can move up and down and back and forth), the grinding head can be precisely aligned with any position on the sealing surface. The hydraulic cylinder can also adjust the grinding pressure, significantly improving the repair accuracy and flexibility.

[0007] As a preferred technical solution, a second motor frame is fixedly installed on the top of the operating table, and a rotary motor is fixedly installed inside the second motor frame. A turntable is coaxially fixed to the output shaft of the rotary motor, and the clamping mechanism is fixed to the top of the turntable. The rotary motor drives the turntable to rotate, thereby realizing the automatic rotation function of the gate valve. This eliminates the need for manual adjustment of the gate valve position during the grinding process, allowing for continuous and uniform grinding of the annular sealing surface, effectively improving repair efficiency and reducing human error.

[0008] As a preferred technical solution, the clamping mechanism includes a placement platform fixed to the top of the turntable, and two arc-shaped clamping plates are symmetrically slidably mounted on the top of the placement platform. The symmetrically arranged arc-shaped clamping plates can grip the gate valve from both sides, accommodating gate valve workpieces of different diameters.

[0009] As a preferred technical solution, each of the arc-shaped clamps has an integrally formed lower extension plate at its bottom, and the top of the placement platform has a movable groove for the lower extension plate to move. The cooperation between the lower extension plate and the movable groove provides precise sliding guidance for the arc-shaped clamps.

[0010] As a preferred technical solution, a clamping screw is rotatably installed within the movable groove. The clamping screw is divided into two parts with opposite thread directions in the middle. Two lower extension plates are respectively threaded to the two parts of the clamping screw with opposite thread directions. A clamping motor with an output shaft coaxially fixed to the clamping screw is installed on the outer wall of the placement platform. Because the clamping screw is divided into two parts with opposite thread directions in the middle, when the clamping motor drives the screw to rotate, the two lower extension plates will move synchronously towards or away from each other, realizing the automatic opening and closing of the arc-shaped clamping plate.

[0011] As a preferred technical solution, the mounting frame is equipped with two vertically arranged adjustment mechanisms. Each adjustment mechanism includes two symmetrically arranged sliders, with an adjustment screw rotatably mounted between the two sliders. One of the sliders is equipped with an adjustment motor whose output shaft is coaxially fixed with the adjustment screw. The movable block is threadedly connected to both adjustment screws. The two vertically arranged adjustment mechanisms within the adjustment frame, through the cooperation of the adjustment screws and sliders, allow the movable block to move freely in both vertical and horizontal directions.

[0012] As a preferred technical solution, the four outer walls of the mounting bracket are provided with strip grooves that slide and connect with the slider. The strip grooves on the four outer walls of the mounting bracket provide a stable sliding track for the slider, restricting the direction of movement of the slider and ensuring the stability and accuracy of the adjustment process.

[0013] As a preferred technical solution, a support leg is fixedly connected to each of the four corners of the bottom of the operating platform. The support legs at the bottom of the operating platform provide a stable support foundation for the entire device, ensuring that the device remains stable during operation. Compared with the prior art, the beneficial effects of this utility model are: This invention achieves multi-angle, multi-position grinding and repair of the gate valve sealing surface by setting a rotatable clamping mechanism and a multi-dimensionally adjustable grinding component. The clamping mechanism on the top of the operating table can drive the gate valve to rotate, and in conjunction with the adjusting component at the bottom of the mounting plate (the movable block can move up and down and back and forth), the grinding head can be precisely aligned with any position on the sealing surface. The hydraulic cylinder can also adjust the grinding pressure, significantly improving the repair accuracy and flexibility. Attached Figure Description

[0014] Figure 1 This is one of the overall structural schematic diagrams of this utility model; Figure 2 This is the second schematic diagram of the overall structure of this utility model (front view); Figure 3 This is a schematic diagram of the clamping mechanism in this utility model; Figure 4 This is a schematic diagram of the adjustment component in this utility model; The meanings of the labels in the diagram are as follows: 1. Operating table; 10. Support leg; 11. Second motor frame; 12. Rotary motor; 13. Turntable; 2. Clamping mechanism; 20. Placement platform; 21. Arc-shaped clamping plate; 22. Lower extension plate; 23. Movable groove; 24. Clamping screw; 25. Clamping motor; 3. Mounting plate; 30. Support column; 4. Adjustment assembly; 40. Mounting frame; 41. Strip groove; 42. Adjustment mechanism; 420. Slider; 421. Adjustment motor; 422. Adjustment screw; 43. Movable block; 44. Hydraulic cylinder; 5. First motor frame; 50. Grinding motor; 51. Rotating shaft; 6. Grinding head. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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. Please see Figures 1-4 This utility model provides a technical solution: A grinding and repair device for the sealing surface of a gate valve includes an operating platform 1. A clamping mechanism 2 is rotatably mounted on the top of the operating platform 1. A mounting plate 3 is located on the top of the operating platform 1, adjacent to the clamping mechanism 2. A support column 30 is fixed at each of the four corners of the bottom of the mounting plate 3. The bottom of the support column 30 is fixed to the top of the operating platform 1. An adjusting component 4 is mounted on the top of the mounting plate 3. The adjusting component 4 includes a mounting frame 40 fixed to the top of the mounting plate 3. A movable block 43 that can move up and down and back and forth is installed inside the mounting frame 40. A hydraulic cylinder 44 is fixedly connected to the left outer wall of the movable block 43. A first motor frame 5 is fixedly connected to the end of the piston rod of the hydraulic cylinder 44. A grinding motor 50 is installed inside the first motor frame 5. A rotating shaft 51 is fixed to the output shaft of the grinding motor 50. A grinding head 6 is fixedly mounted on the rotating shaft 51 by bolts. By setting up a rotatable clamping mechanism 2 and a multi-dimensionally adjustable grinding component, multi-angle and multi-position grinding and repair of the sealing surface of the gate valve can be achieved. The clamping mechanism 2 at the top of the operating table 1 can drive the gate valve to rotate. In conjunction with the adjusting component 4 at the bottom of the mounting plate 3 (the movable block 43 can move up and down and back and forth), the grinding head 6 can be precisely aligned with any position on the sealing surface. The hydraulic cylinder 44 can also adjust the grinding pressure, which significantly improves the repair accuracy and flexibility.

[0016] In a preferred embodiment, a second motor frame 11 is fixedly installed on the top of the operating table 1. A rotary motor 12 is fixedly installed inside the second motor frame 11. A turntable 13 is coaxially fixed to the output shaft of the rotary motor 12, and a clamping mechanism 2 is fixed to the top of the turntable 13. The rotary motor 12 drives the turntable 13 to rotate, thereby realizing the automatic rotation function of the gate valve. This eliminates the need for manual adjustment of the gate valve position during the grinding process, allowing for continuous and uniform grinding of the annular sealing surface, effectively improving repair efficiency and reducing human error.

[0017] In a preferred embodiment, the clamping mechanism 2 includes a placement platform 20 fixed to the top of the turntable, with two arc-shaped clamping plates 21 symmetrically slidably mounted on the top of the placement platform 20. The symmetrically arranged arc-shaped clamping plates 21 can grip the gate valve from both sides, accommodating gate valve workpieces of different diameters.

[0018] In a preferred embodiment, each arc-shaped clamping plate 21 has an integrally formed lower extension plate 22 at its bottom, and the top of the placement platform 20 has a movable groove 23 for the lower extension plate 22 to move. The cooperation between the lower extension plate 22 and the movable groove 23 provides precise sliding guidance for the arc-shaped clamping plate 21.

[0019] In a preferred embodiment, a clamping screw 24 is rotatably mounted within the movable slot 23. The clamping screw 24 is divided into two parts with opposite thread directions in the middle. Two lower extension plates 22 are threadedly connected to the two parts of the clamping screw 24 with opposite thread directions, respectively. A clamping motor 25 with its output shaft coaxially fixed to the clamping screw 24 is mounted on the outer wall of the placement platform 20. Since the clamping screw 24 is divided into two parts with opposite thread directions in the middle, when the clamping motor 25 drives the screw to rotate, the two lower extension plates 22 will move synchronously towards or away from each other, realizing the automatic opening and closing of the arc-shaped clamping plate 21.

[0020] In a preferred embodiment, the mounting frame 40 is provided with two vertically arranged adjustment mechanisms 42. Each adjustment mechanism 42 includes two symmetrically arranged sliders 420. An adjustment screw 422 is rotatably mounted between the two sliders 420, and an adjustment motor 421 with its output shaft coaxially fixed to the adjustment screw 422 is mounted on one of the sliders 420. The movable block 43 is threadedly connected to both adjustment screws 422. Through the cooperation of the adjustment screws 422 and the sliders 420, the two vertically arranged adjustment mechanisms 42 within the adjustment frame allow the movable block 43 to move freely in both vertical and horizontal directions.

[0021] As a preferred embodiment, the four outer walls of the mounting bracket 40 are provided with strip grooves 41 that are slidably connected to the slider 420. The strip grooves 41 on the four outer walls of the mounting bracket 40 provide a stable sliding track for the slider 420, restrict the movement direction of the slider 420, and ensure the stability and accuracy of the adjustment process.

[0022] In a preferred embodiment, a support leg 10 is fixedly connected to each of the four corners of the bottom of the operating platform 1. The support legs 10 at the bottom of the operating platform 1 provide a stable support foundation for the entire device, ensuring that the device remains stable during operation. In use, the gate valve sealing surface grinding and repair device of this utility model first places the gate valve to be repaired on the placement platform 20 of the clamping mechanism 2, and starts the clamping motor 25 to drive the clamping screw 24 to rotate. Because the thread direction of the middle part of the screw is opposite, the lower extension plates 22 on both sides will drive the arc-shaped clamping plates 21 to move synchronously towards each other, clamping the gate valve from both sides. Next, the position is adjusted by adjusting the two vertical adjustment mechanisms 42 of the adjustment component 4. The adjustment motor 421 drives the adjustment screw 422 to rotate, driving the slider 420 to slide along the strip groove 41 on the outer wall of the mounting frame 40, thereby precisely adjusting the up-down and back-forward movement of the movable block 43 so that the grinding head 6 is aligned with the area of ​​the gate valve sealing surface to be repaired. Then, the hydraulic cylinder 44 is started, and the position of the first motor frame 5 is adjusted by the piston rod to control the contact pressure between the grinding head 6 and the gate valve sealing surface, which can be precisely set according to the wear degree of the sealing surface. Then, the grinding motor 50 is turned on, driving the rotating shaft 51 to rotate the grinding head 6 at high speed. At the same time, the rotating motor 12 is started, driving the clamping mechanism 2 and the gate valve to rotate as a whole through the turntable 13. During the rotation, the grinding head 6 continuously grinds and repairs the sealing surface. With the fine adjustment of the adjusting component 4, uniform grinding of the annular sealing surface is achieved.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A grinding and repair device for the sealing surface of a gate valve, characterized in that: The system includes an operating table (1), on which a clamping mechanism (2) is rotatably mounted. A mounting plate (3) is located on the top of the operating table (1) at the clamping mechanism (2). A support column (30) is fixed at each of the four corners of the bottom of the mounting plate (3). The bottom of the support column (30) is fixed to the top of the operating table (1). An adjustment component (4) is installed on the top of the mounting plate (3). The adjustment component (4) includes a mounting frame (40) fixed on the top of the mounting plate (3). A movable block (43) that can move up and down and back and forth is installed inside the mounting frame (40). A hydraulic cylinder (44) is fixedly connected to the left outer wall of the movable block (43). A first motor frame (5) is fixedly connected to the piston rod end of the hydraulic cylinder (44). A grinding motor (50) is installed inside the first motor frame (5). A rotating shaft (51) is fixed to the output shaft of the grinding motor (50). A grinding head (6) is fixedly installed on the rotating shaft (51) by bolts.

2. The grinding and repair device for the gate valve sealing surface as described in claim 1, characterized in that: A second motor frame (11) is fixedly installed on the top of the operating table (1), and a rotary motor (12) is fixedly installed inside the second motor frame (11). A turntable (13) is coaxially fixed to the output shaft of the rotary motor (12), and the clamping mechanism (2) is fixed to the top of the turntable (13).

3. The grinding and repair device for the gate valve sealing surface as described in claim 2, characterized in that: The clamping mechanism (2) includes a placement platform (20) fixed to the top of the turntable, and two arc-shaped clamping plates (21) are symmetrically slidably installed on the top of the placement platform (20).

4. The grinding and repair device for the gate valve sealing surface as described in claim 3, characterized in that: Each of the arc-shaped clamps (21) has an integrally formed lower extension plate (22) at its bottom, and the top of the placement platform (20) has an active groove (23) for the lower extension plate (22) to move.

5. The grinding and repair device for the gate valve sealing surface as described in claim 4, characterized in that: A clamping screw (24) is rotatably installed in the movable groove (23). The clamping screw (24) is divided into two parts with opposite thread directions in the middle. Two lower extension plates (22) are respectively threaded to the two parts of the clamping screw (24) with opposite thread directions. A clamping motor (25) with an output shaft coaxially fixed to the clamping screw (24) is installed on the outer wall of the placement platform (20).

6. The grinding and repair device for the gate valve sealing surface as described in claim 5, characterized in that: The mounting bracket (40) is provided with two vertically arranged adjustment mechanisms (42). The adjustment mechanism (42) includes two symmetrically arranged sliders (420). An adjustment screw (422) is rotatably installed between the two sliders (420). An adjustment motor (421) with an output shaft coaxially fixed to the adjustment screw (422) is installed on one of the sliders (420). The movable block (43) is threadedly connected to both adjustment screws (422).

7. The grinding and repair device for the gate valve sealing surface as described in claim 6, characterized in that: The mounting bracket (40) has strip grooves (41) on all four outer walls that are slidably connected to the slider (420).

8. The grinding and repair device for the gate valve sealing surface as described in claim 7, characterized in that: Each of the four corners of the bottom of the operating table (1) is fixedly connected to a support leg (10).

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