Valve polishing device

Abstract

The utility model discloses a valve polishing device which comprises a supporting table, a supporting frame fixedly connected to the top of the supporting table and a lifting unit arranged on the supporting frame, a sand blasting polishing unit is arranged below the lifting unit, and the lifting unit is used for driving the sand blasting polishing unit to ascend and descend. The sand blasting and grinding unit comprises a sand blasting part and a rotating part, the sand blasting part is used for conducting sand blasting and grinding on an inner cavity of the valve, the rotating part is used for driving the sand blasting part to rotate, the clamping unit and the sand discharging unit are arranged on the supporting table, and the clamping unit is used for clamping the valve. After the valve is clamped by the clamping unit, the lifting unit enables the sand blasting part to go deep into the inner cavity of the spherical valve, sand blasting and grinding are conducted on the inner cavity of the spherical valve through the sand blasting part, the sand blasting part is driven by the rotating part to rotate, and then the all-directional and dead-corner-free grinding effect on the inner cavity of the spherical valve is achieved.

Description

Technical Field

[0001] This utility model relates to the field of valve grinding technology, and in particular to a valve grinding device. Background Technology

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and regulate and control the parameters of the transported medium. Based on their function, they can be divided into shut-off valves, check valves, regulating valves, etc. Valves can be used to control the flow of various types of fluids, including air, water, steam, various corrosive media, mud, oil, liquid metals, and radioactive media.

[0003] When grinding, polishing, or removing rust from the hollow inner cavity of a ball valve, the ball valve's inner cavity is curved in a spherical shape, making it narrower at both ends and wider in the middle. When the grinding tool is inserted into the ball valve cavity from the valve end, the limited operating space restricts its movement, making it difficult to operate flexibly. This may prevent the inner cavity from being ground comprehensively and evenly, easily resulting in unseen areas. Furthermore, during grinding, workers need to precisely control the movement trajectory and force of the grinding tool to adapt to the changes in the spherical surface, which places high demands on the operator's skills. Therefore, a valve grinding device is proposed. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] In view of the problems existing in the current valve grinding device, this utility model is proposed.

[0006] Therefore, the purpose of this utility model is to provide a valve grinding device that is suitable for solving the problem that the limited operating space inside the ball valve restricts the application of grinding tools, making it difficult to operate flexibly. Workers need to precisely control the movement trajectory and force of the grinding tools, which requires high technical skills from the operators.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a valve grinding device, comprising:

[0008] Support platform and support frame fixedly connected to the top of the support platform;

[0009] A lifting unit is installed on a support frame, and a sandblasting and polishing unit is installed below the lifting unit. The lifting unit is used to drive the sandblasting and polishing unit to move up and down.

[0010] The sandblasting and polishing unit includes a sandblasting section and a rotating section. The sandblasting section is used to sandblast and polish the valve cavity, and the rotating section is used to drive the sandblasting section to rotate.

[0011] A clamping unit and a sand discharge unit are installed on the support platform. The clamping unit is used to clamp the valve, and the sand discharge unit is used to discharge the sand particles generated after grinding.

[0012] In a preferred embodiment of the valve grinding device of this utility model, the lifting unit includes an electric telescopic cylinder fixedly installed on the top of the support frame, and the output end of the electric telescopic cylinder slides through the support frame and is fixedly connected to a rectangular frame.

[0013] In a preferred embodiment of the valve grinding device of this utility model, the sandblasting part includes an L-shaped tube fixedly connected to one side of a rectangular frame, and openings that fit the L-shaped tube are provided on both sides of the support frame. A spray pipe that penetrates the rectangular frame is fixedly connected to the bottom of the rectangular frame. The bottom end of the L-shaped tube is sealed and rotatably connected to the top end of the spray pipe. Multiple nozzles are fixedly connected to the bottom of the spray pipe.

[0014] In a preferred embodiment of the valve grinding device of this utility model, the rotating part includes a servo motor fixedly installed on the top of the inner wall of a rectangular frame, the output end of the servo motor is fixedly connected to a drive gear, the outer wall of the spray pipe is fixedly connected to a driven gear meshing with the drive gear, and the sandblasting unit also includes a shielding component to prevent sand particles from splashing.

[0015] In a preferred embodiment of the valve grinding device of this utility model, the shielding component includes a fixed plate fixedly connected to one side of a rectangular frame, an electric telescopic rod fixedly connected to the bottom of the fixed plate, a baffle slidably sleeved on the wall of the nozzle, and the output end of the electric telescopic rod fixed to the top of the baffle.

[0016] In a preferred embodiment of the valve grinding device of this utility model, the clamping unit includes multiple electric push rods fixedly installed on the top of the support platform, and the output end of each electric push rod is fixedly connected to a clamping plate.

[0017] In a preferred embodiment of the valve grinding device of this utility model, the top of the support platform is provided with a circular opening, and the sand discharge unit includes a filter plate fixedly connected to the circular opening of the support platform.

[0018] In a preferred embodiment of the valve grinding device of this utility model, the sand discharge unit further includes a conical cover fixedly connected below the circular opening of the support platform, and the bottom of the conical cover is fixedly connected to a discharge pipe.

[0019] The beneficial effects of this utility model are as follows: After the valve is clamped by the clamping unit, the lifting unit will insert the sandblasting part into the inner cavity of the ball valve and perform sandblasting and grinding on the inner cavity of the ball valve through the sandblasting part. The rotating part will drive the sandblasting part to rotate, thereby achieving a comprehensive and thorough grinding effect on the inner cavity of the ball valve. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0021] Figure 1 This is a schematic diagram of the overall structure of the valve grinding device proposed in this utility model;

[0022] Figure 2 This is a schematic diagram of the sandblasting and polishing unit structure proposed in this utility model;

[0023] Figure 3 This is a partial cross-sectional view of the support platform proposed in this utility model. Attached image description:

[0025] 100. Support platform; 101. Support frame;

[0026] 200. Lifting unit; 201. Electric telescopic cylinder; 202. Rectangular frame;

[0027] 300. Sandblasting and polishing unit; 301. Sandblasting section; 301a. L-shaped tube; 301b. Spray nozzle; 301c. Nozzle; 302. Rotating part; 302a. Servo motor; 302b. Drive gear; 302c. Driven gear; 303. Shielding assembly; 303a. Fixing plate; 303b. Electric telescopic rod; 303c. Baffle;

[0028] 400. Clamping unit; 401. Electric actuator; 402. Clamping plate;

[0029] 500, Sand discharge unit; 501, Filter plate; 502, Conical cover; 503, Discharge pipe. Detailed Implementation

[0030] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0031] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0033] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0034] Example 1

[0035] Reference Figures 1-3 The first embodiment of this utility model provides a valve grinding device that can grind the inner cavity of a ball valve in all directions without dead angles. It includes: a support platform 100, a lifting unit 200, a sandblasting unit 300, a clamping unit 400, and a sand discharge unit 500.

[0036] Among them, the support platform 100 and the support frame 101 are fixedly connected to the top of the support platform 100;

[0037] A lifting unit 200 is installed on the support frame 101, and a sandblasting and polishing unit 300 is installed below the lifting unit 200. The lifting unit 200 is used to drive the sandblasting and polishing unit 300 to move up and down.

[0038] The sandblasting and polishing unit 300 includes a sandblasting part 301 and a rotating part 302. The sandblasting part 301 is used to sandblast and polish the valve cavity, and the rotating part 302 is used to drive the sandblasting part 301 to rotate.

[0039] A clamping unit 400 and a sand discharge unit 500 are provided on the support platform 100. The clamping unit 400 is used to clamp the valve, and the sand discharge unit 500 is used to discharge the sand particles generated after grinding.

[0040] The shaft seal end of the ball valve is sealed with a sealing flange to connect the two ends of the ball valve. Then, the unassembled empty ball valve shell is placed vertically below the sandblasting section 301. The clamping unit 400 then clamps and fixes the ball valve. Next, the lifting unit 200 drives the sandblasting and grinding unit 300 to descend, allowing the sandblasting section 301 to penetrate into the inner cavity of the ball valve. Then, the sandblasting section 301 sprays high-speed sand particles, using the impact of the high-speed sand flow to clean the rust in the valve cavity and perform rough grinding. The rotating part 302 drives the sandblasting section 301 to rotate, so that the sandblasting section 301 can perform all-round grinding of the valve cavity without dead angles, thereby reducing the workload of the operator. The sand particles sprayed by the sandblasting section 301 will pass through the bottom of the valve and be recovered by the sand discharge unit. After grinding is completed, the lifting unit 200 drives the sandblasting and grinding unit 300 to rise. Then, the clamping unit 400 releases the clamp on the valve, and the valve can then be removed.

[0041] Example 2

[0042] Reference Figure 1 and Figure 2 This is the second embodiment of the present invention. Unlike the previous embodiment, the lifting unit 200 includes an electric telescopic cylinder 201 fixedly installed on the top of the support frame 101. The output end of the electric telescopic cylinder 201 slides through the support frame 101 and is fixedly connected to a rectangular frame 202.

[0043] The electric telescopic cylinder 201 is used to drive the rectangular frame 202 to move vertically, so that the rectangular frame 202 can drive the sandblasting and grinding unit 300 to rise and fall, thereby facilitating the sandblasting part 301 to penetrate into the valve.

[0044] Example 3

[0045] Reference Figure 1 and Figure 2 This is the third embodiment of the present invention. Unlike the previous embodiment, the sandblasting part 301 includes an L-shaped tube 301a fixedly connected to one side of the rectangular frame 202. Both sides of the support frame 101 are provided with openings that fit the L-shaped tube 301a. A spray pipe 301b that penetrates the rectangular frame 202 is fixedly connected to the bottom of the rectangular frame 202. The bottom end of the L-shaped tube 301a is sealed and rotatably connected to the top end of the spray pipe 301b. Multiple nozzles 301c are fixedly connected to the bottom of the spray pipe 301b.

[0046] One end of the L-shaped tube 301a passes through the opening of the support frame 101, allowing the L-shaped tube 301a to rise and fall normally. The other end of the L-shaped tube 301a is connected to an external sandblasting machine. A sandblasting machine is a mechanical device that uses abrasive material and compressed air to spray it onto the surface of a workpiece. When the electric telescopic cylinder 201 inserts the nozzle 301c into the inner cavity of the ball valve, the sandblasting machine delivers high-speed abrasive particles into the L-shaped tube 301a. The abrasive particles in the L-shaped tube 301a are then sprayed out through the nozzle 301b and multiple nozzles 301c, causing multiple annular array nozzles 301c to spray high-speed abrasive particles onto the inner wall of the ball valve for polishing. The height of the nozzles 301c is moved by the electric telescopic cylinder 201 to cooperate with the rotating part 302 to polish the ball valve from all directions.

[0047] The rotating part 302 includes a servo motor 302a fixedly installed on the top of the inner wall of the rectangular frame 202. The output end of the servo motor 302a is fixedly connected to a drive gear 302b. The outer wall of the nozzle 301b is fixedly connected to a driven gear 302c that meshes with the drive gear 302b. The sandblasting unit 300 also includes a shielding component 303 to prevent sand particles from splashing.

[0048] The L-shaped tube 301a and the nozzle 301b can be sealed together by a rotary joint or other connecting parts. When the servo motor 302a drives the drive gear 302b to rotate, the drive gear 302b drives the nozzle 301b to rotate through the driven gear 302c, so that multiple nozzles 301c can perform all-round, no-dead-angle polishing on the inner cavity of the ball valve in a rotating manner.

[0049] Specifically, the shielding component 303 includes a fixed plate 303a fixedly connected to one side of the rectangular frame 202, an electric telescopic rod 303b fixedly connected to the bottom of the fixed plate 303a, a baffle 303c slidably sleeved on the wall of the nozzle 301b, and the output end of the electric telescopic rod 303b fixed to the top of the baffle 303c.

[0050] When the electric telescopic cylinder 201 lowers the nozzle 301c into the inner cavity of the ball valve, the electric telescopic rod 303b drives the baffle 303c to descend, so that the baffle 303c blocks the end opening of the valve to prevent sand particles inside the vertically placed valve from splashing out from the top. When the electric telescopic cylinder 201 drives the nozzle 301c to rise and fall, the electric telescopic rod 303b cooperates with the electric telescopic cylinder 201 to drive the baffle 303c to rise and fall, so as to ensure that the baffle 303c always blocks the opening at the top of the valve.

[0051] Example 4

[0052] Reference Figure 1 and Figure 3This is the fourth embodiment of the present utility model. Unlike the previous embodiment, the clamping unit 400 includes a plurality of electric push rods 401 fixedly installed on the top of the support platform 100. The plurality of electric push rods 401 are distributed in a ring at equal intervals, and the output end of each electric push rod 401 is fixedly connected to a clamping plate 402.

[0053] When the valve is placed directly below the nozzle 301b, multiple electric push rods 401 simultaneously push their respective clamping plates 402 to bring them closer together and clamp and fix the outer surface of the valve to ensure that the valve will not shift due to the impact of the sand particles during the polishing process. After polishing, multiple electric push rods 401 simultaneously pull their respective clamping plates 402 to move them away from each other, and then the valve can be removed.

[0054] In addition, the top of the support platform 100 has a circular opening, and the sand discharge unit 500 includes a filter plate 501 fixedly connected to the circular opening of the support platform 100.

[0055] The circular opening is located directly below the nozzle 301b. The valve needs to be placed on the filter plate 501. When the sand particles hit the inner cavity of the valve and lose kinetic energy, the sand particles will automatically fall under the action of gravity. The sand particles can pass through the gaps on the filter plate 501 and fall below the support platform 100 to avoid the sand particles accumulating in the valve.

[0056] It should be noted that the sand discharge unit 500 also includes a conical cover 502 fixedly connected below the circular opening of the support platform 100. The conical cover 502 is tapered downwards, and the bottom of the conical cover 502 is fixedly connected to the discharge pipe 503.

[0057] The sand particles passing through the filter plate 501 will fall into the conical cover 502. The conical cover 502 is conical and narrows downward to quickly guide the sand particles into the discharge pipe 503. The sand particles are then discharged through the discharge pipe 503 for recycling.

[0058] During use, the shaft sealing end of the ball valve is sealed with a sealing flange. Then, the unassembled empty ball valve shell is placed on the filter plate 501. Next, multiple electric push rods 401 synchronously push their respective clamping plates 402 to bring them closer together and clamp and fix the outer surface of the valve. Then, one end of the L-shaped tube 301a is connected to an external sandblasting machine. Then, the electric telescopic cylinder 201 drives the rectangular frame 202 to descend, so that the nozzle 301c descends into the inner cavity of the ball valve. At this time, the electric telescopic rod 303b, in coordination with the lifting height of the electric telescopic cylinder 201, drives the baffle 303c to rise and fall, so as to ensure that the baffle 303c always blocks the opening at the top of the valve. Then, high-speed sand particles are delivered into the L-shaped tube 301a through the sandblasting machine. The sand particles in the L-shaped tube 301a are sprayed out through the spray pipe 301b and multiple nozzles 301c, so that multiple annular array nozzles 301c spray high-speed sand particles onto the inner wall of the ball valve and polish it.

[0059] Next, the servo motor 302a drives the drive gear 302b to rotate, which in turn drives the nozzle 301b to rotate via the driven gear 302c. The electric telescopic cylinder 201 moves the height of the nozzle 301c, allowing multiple nozzles 301c to rotate and polish the inner cavity of the ball valve in an all-round, thorough manner. When the sand particles hit the inner cavity of the valve and lose kinetic energy, they pass through the filter plate 501 under gravity and fall into the conical cover 502. The sand particles are then discharged through the discharge pipe 503. After polishing is completed, the L-shaped pipe 301a stops feeding, and the servo motor 302a stops rotating. Then, the electric telescopic cylinder 201 drives the rectangular frame 202 to rise, and multiple electric push rods 401 simultaneously pull their respective clamps 402 to move them away from each other, allowing the valve to be removed.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A valve lapping device characterized by, Include: Supporting table (100) and supporting frame (101) fixedly connected on the top of supporting table (100); Lifting unit (200) provided on supporting frame (101), the lower side of lifting unit (200) is provided with sand blasting polishing unit (300), and lifting unit (200) is used to drive sand blasting polishing unit (300) to lift; The sand blasting polishing unit (300) comprises a sand blasting part (301) and a rotating part (302), the sand blasting part (301) is used for sand blasting and polishing the inner cavity of the valve, and the rotating part (302) is used for driving the sand blasting part (301) to rotate; Clamping unit (400) and sand discharging unit (500) provided on supporting table (100), clamping unit (400) is used for clamping valve, and sand discharging unit (500) is used for discharging sand produced after polishing.

2. A valve lapping device according to claim 1, wherein: The lifting unit (200) comprises an electric telescopic cylinder (201) fixedly installed on the top of the supporting frame (101), and the output end of the electric telescopic cylinder (201) slidably penetrates the supporting frame (101) and is fixedly connected with a rectangular frame (202).

3. A valve lapping device according to claim 2, wherein: The sand blasting part (301) comprises an L-shaped pipe (301a) fixedly connected on one side of the rectangular frame (202), both sides of the supporting frame (101) are provided with openings matched with the L-shaped pipe (301a), the bottom of the rectangular frame (202) is fixedly connected with a spray pipe (301b) penetrating the rectangular frame (202), the bottom end of the L-shaped pipe (301a) is sealingly rotatably connected with the top end of the spray pipe (301b), and the bottom of the spray pipe (301b) is fixedly connected with a plurality of spray heads (301c).

4. A valve lapping device according to claim 3, wherein: The rotating part (302) comprises a servo motor (302a) fixedly installed on the inner wall top of the rectangular frame (202), the output end of the servo motor (302a) is fixedly connected with a driving gear (302b), the outer wall of the spray pipe (301b) is fixedly connected with a driven gear (302c) engaged with the driving gear (302b), and the sand blasting polishing unit (300) further comprises a shielding assembly (303) for preventing sand particles from splashing.

5. A valve lapping device according to claim 4, wherein: The shielding assembly (303) comprises a fixed plate (303a) fixedly connected on one side of the rectangular frame (202), the bottom of the fixed plate (303a) is fixedly connected with an electric telescopic rod (303b), the pipe wall of the spray pipe (301b) is slidably sleeved with a baffle (303c), and the output end of the electric telescopic rod (303b) is fixed on the top of the baffle (303c).

6. The valve lapping device of claim 1, wherein: The clamping unit (400) comprises a plurality of electric push rods (401) fixedly installed on the top of the supporting table (100), and the output end of each electric push rod (401) is fixedly connected with a clamping plate (402).

7. A valve lapping device according to claim 6, wherein: A circular opening is formed in the top of the supporting table (100), and the sand discharging unit (500) comprises a filter plate (501) fixedly connected in the circular opening of the supporting table (100).

8. A valve lapping device according to claim 7, wherein: The sand discharging unit (500) further comprises a conical cover (502) fixedly connected below the circular port of the support table (100), and a discharging pipe (503) is fixedly communicated with the bottom of the conical cover (502).

Images