High-pressure valve surface polishing device and polishing method thereof

Abstract

The invention discloses a high-pressure valve surface polishing device which comprises a main body unit, a polishing unit and a polishing unit. The operation unit comprises a first partition plate, a net plate is slidably connected to the inner wall of the box body, the upper portion of the first partition plate is filled with grinding materials, a plurality of vertical plates are symmetrically and fixedly connected to the bottom face of the net plate, gas collecting pipes are symmetrically and fixedly connected to the inner bottom wall of the box body, and jacking assemblies used for driving the vertical plates to move are symmetrically arranged on the gas collecting pipes; a plurality of air outlet assemblies are symmetrically arranged on the box body, an energy charging assembly is arranged on the inner bottom wall of the box body, a power assembly is arranged on the energy charging assembly, and a pushing assembly is arranged between the power assembly and the energy charging assembly. A first piston plate is driven to move towards the outer side under the gas pressure by opening an electromagnetic valve, so that an ejector rod moves towards the two sides, through cooperation of the ejector rod and an inclined opening, a vertical plate is driven to move upwards, a net plate is driven to move upwards, a machined valve is ejected upwards, and a worker can take the valve conveniently.

Description

Technical Field

[0001] The present invention relates to the technical field of valve processing, and particularly relates to a surface polishing device for high-pressure valves and a polishing method thereof. Background Art

[0002] Valve polishing is a commonly used surface treatment technology. Especially in the polishing process of complex workpieces such as valves, it can effectively improve the polishing efficiency and surface quality. Its basic principle is that through mechanical vibration, the surface of the valve and the abrasive medium undergo friction and impact, thereby removing surface roughness and achieving a smooth and flat effect. Vibration polishing has higher efficiency and a more uniform polishing effect compared to traditional manual polishing or mechanical polishing, and is especially suitable for mass production and workpieces with complex shapes.

[0003] When the existing device grinds a valve, the mutual friction of the abrasives will generate heat. The long-term accumulation of heat will cause the temperature to rise higher and higher, resulting in an increase in the surface temperature of the valve, which in turn affects the polishing effect and even damages the valve. At the same time, after the processing is completed, it is necessary for the staff to pick up in the abrasives, the operation is rather cumbersome, and the work efficiency is low. Summary of the Invention

[0004] The purpose of this part is to outline some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. In this part and the abstract and title of the specification of this application, some simplifications or omissions may be made to avoid obscuring the purpose of this part, the abstract of the specification, and the title of the invention, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: A surface polishing device for high-pressure valves, comprising: A main body unit, including a box body, on which a plurality of support legs are symmetrically and fixedly connected, and vibration motors are symmetrically arranged on the box body; An operation unit, including a first partition plate, which is fixedly connected to the inner wall of the box body. A net plate is slidably connected to the inner wall of the box body. Abrasives are filled above the first partition plate. A plurality of vertical plates are symmetrically and fixedly connected to the bottom surface of the net plate, and the vertical plates respectively slide through the first partition plate and the box body. Gas collecting pipes are symmetrically and fixedly connected to the inner bottom wall of the box body. Lifting components for driving the vertical plates to move are symmetrically arranged on the gas collecting pipes. A plurality of air outlet components are symmetrically arranged on the box body. An energy storage component is arranged on the inner bottom wall of the box body. A power component is arranged on the energy storage component, and a pushing component is arranged between the power component and the energy storage component.

[0006] As a preferred embodiment of the surface polishing device for a high-pressure valve of the present invention, the following is provided: The lifting assembly includes a cylinder. An electromagnetic valve is provided on the gas collecting pipe inside the cylinder. A first piston plate is slidably connected to the inner wall of the cylinder. A movable rod is fixedly connected to the first piston plate. A spring is fixedly connected between the first piston plate and the inner wall of the cylinder. A plurality of air outlets are formed on the cylinder. A top rod is fixedly connected to the movable rod. An inclined opening is formed on the vertical plate, and the top rod extends into the inclined opening.

[0007] As a preferred embodiment of the surface polishing device for a high-pressure valve of the present invention, the following is provided: The air outlet assembly includes a first air outlet pipe fixedly connected to the box body. A first pressure relief valve is provided on the box body inside the first air outlet pipe. A second air outlet pipe is fixedly connected to the first air outlet pipe. A plurality of third air outlet pipes are fixedly connected to the second air outlet pipe. A second pressure relief valve is provided on the third air outlet pipe.

[0008] As a preferred embodiment of the surface polishing device for a high-pressure valve of the present invention, the following is provided: The energy storage assembly includes a first rectangular box fixedly connected to the inner bottom wall of the box body. A second piston plate is slidably connected to the inner side wall of the first rectangular box. A sliding rod is fixedly connected to the second piston plate. The sliding rod slidably penetrates through the first rectangular box. Second rectangular boxes are symmetrically and fixedly arranged on both sides of the first rectangular box. The sliding rod slidably penetrates through the second rectangular box. A third piston plate is fixedly connected to the sliding rod. The third piston plate is slidably connected to the second rectangular box. A plurality of air inlet openings are symmetrically formed on the second rectangular box. The second rectangular box is fixedly connected to the gas collecting pipe. A first one-way valve is provided on the gas collecting pipe inside the second rectangular box.

[0009] As a preferred embodiment of the surface polishing device for a high-pressure valve of the present invention, the following is provided: The power assembly includes a third rectangular box fixedly connected to the first rectangular box. A second partition is fixedly connected to the inner wall of the third rectangular box. A low-boiling-point evaporation liquid is filled above the second partition. Steam pipes are symmetrically and fixedly connected to the third rectangular box. A second one-way valve is provided on the steam pipe. Return steam pipes are symmetrically and fixedly connected between the third rectangular box and the first rectangular box. A third one-way valve is provided on the return steam pipe.

[0010] As a preferred embodiment of the surface polishing device for a high-pressure valve of the present invention, the following is provided: The power assembly further includes a movable cover plate slidably connected to the inner bottom wall of the third rectangular box. Rectangular openings are symmetrically formed on both the third rectangular box and the first rectangular box. The movable cover plate cooperates with the rectangular openings.

[0011] As a preferred embodiment of the surface polishing device for high-pressure valves of the present invention, the following is provided: The power assembly further includes a plurality of heat conducting rods, which are fixedly inserted through the third rectangular box and the first partition plate, and the number of the heat conducting rods is three.

[0012] As a preferred embodiment of the surface polishing device for high-pressure valves of the present invention, the following is provided: The pushing assembly includes two connecting rods, which are fixedly connected to the movable cover plate, and the connecting rods are slidably inserted through the third rectangular box. Rotating rods are symmetrically and rotatably connected to the front and rear inner side walls of the box body, and swing rods are fixedly connected to the rotating rods.

[0013] As a preferred embodiment of the surface polishing device for high-pressure valves of the present invention, the following is provided: The pushing assembly further includes two push rods, which are fixedly connected to the sliding rod, and the push rods cooperate with the swing rods.

[0014] As described above, a polishing method for a surface polishing device for high-pressure valves includes the following steps: S1. Place the high-pressure valve to be polished into the box filled with abrasive, and then start the vibration motor to polish the high-pressure valve. S2. During the polishing process, the heat generated by the mutual friction of the abrasive is transmitted to the inside of the third rectangular box through the heat conducting rods to heat the low-boiling-point evaporation liquid. After heating, the low-boiling-point evaporation liquid is transported downward through the steam pipe and enters the first rectangular box through the rectangular opening on one side. Then, it drives the second piston plate to move to the other side. After moving to a certain position, the push rod pushes the swing rod to make it swing, and drives the movable cover plate to move in the opposite direction along with the connecting rod, so that the originally blocked rectangular opening is exposed and the originally exposed rectangular opening is blocked. In this way, it reciprocally drives the sliding rod to move left and right. S3. The sliding rod moves left and right, driving the third piston plate to move left and right, injecting gas into the gas collecting pipe, so that a high pressure is formed inside the gas collecting pipe. S4. When the processing of the high-pressure valve is completed, open the solenoid valve, and drive the first piston plate to move outward under the gas pressure, so that the ejector rod moves to both sides. Through the cooperation of the ejector rod and the inclined opening, drive the vertical plate to move upward, drive the mesh plate to move upward, and jack up the processed valve, which is convenient for the staff to take. S5. While injecting gas into the gas collecting pipe, when the air pressure inside the gas collecting pipe reaches the limit value, the gas is discharged into the first air outlet pipe and the second air outlet pipe for storage. When the pressure inside them also reaches the limit value, it is injected into the box through the third air outlet pipe to wash the abrasive.

[0015] The beneficial effects of the present invention: 1. During the grinding process, the heat generated by the friction between the abrasives is transferred to the inside of the third rectangular box through the heat conducting rod to heat the low-boiling point evaporating liquid. After heating, the low-boiling point evaporating liquid is transported downward through the steam pipe and enters the first rectangular box through the rectangular opening on one side, and then drives the second piston plate to move to the other side. After moving to a certain position, the push rod pushes the swing rod to swing, and pushes the movable cover plate to move in the opposite direction with the connecting rod, so that the originally blocked rectangular opening is exposed and the originally exposed rectangular opening is blocked. In this way, the sliding rod is driven to move left and right, and the sliding rod moves left and right, driving the third piston plate to move left and right, injecting gas into the gas collecting pipe, so that high pressure is formed inside the gas collecting pipe. When the high-pressure valve is processed, the solenoid valve is opened, and the first piston plate is driven to move outward under the gas pressure, so that the push rod moves to both sides, and through the cooperation of the push rod and the oblique opening, the vertical plate is driven to move upward, and the mesh plate is driven to move upward, and the processed valve is lifted up, which is convenient for the staff to take.

[0016] 2. While injecting gas into the gas collecting pipe, when the air pressure inside the gas collecting pipe reaches the limit, the gas is discharged into the first and second outlet pipes for storage. When the internal pressure also reaches the limit, it is injected into the box through the third outlet pipe to flush the abrasive, break the cohesion of the abrasive pieces, and disperse the ends. At the same time, the gas takes away the heat generated by the abrasive to avoid internal heat accumulation and high temperature, thereby ensuring the grinding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them: Figure 1 This is a schematic diagram of the overall front structure of a high-pressure valve surface polishing device proposed by the present invention; Figure 2 for Figure 1 A schematic diagram of a partial cross-sectional structure; Figure 3 for Figure 2 Schematic diagram of the local structure; Figure 4 for Figure 3 Schematic diagram of the local structure; Figure 5 for Figure 4 A schematic diagram of a partial cross-sectional structure; Figure 6 for Figure 4 A schematic diagram of a partial cross-sectional structure; Figure 7 for Figure 4Schematic diagram of the partial sectional structure

[0018] In the figure: 100, main body unit; 101, box body; 102, support leg; 103, vibration motor; 200, operation unit; 201, first partition board; 202, mesh board; 203, vertical board; 204, gas collecting pipe; 205, lifting assembly; 205a, cylinder; 205b, solenoid valve; 205c, first piston plate; 205d, movable rod; 205e, spring; 205f, air outlet; 205g, ejector rod; 205h, inclined opening; 206, air outlet assembly; 206a, first air outlet pipe; 206b, first pressure relief valve; 206c, second air outlet pipe; 206d, third air outlet pipe; 206e, second pressure relief valve; 207, energy storage assembly; 207a, first rectangular box; 207b, second piston plate; 207c, sliding rod; 207d, second rectangular box; 207e, air inlet opening; 207f, third piston plate; 207g, first one-way valve; 208, power assembly; 208a, third rectangular box; 208b, second partition board; 208c, steam delivery pipe; 208d, second one-way valve; 208e, rectangular opening; 208f, movable cover plate; 208g, steam return pipe; 208h, third one-way valve; 208i, heat conducting rod; 209, pushing assembly; 209a, connecting rod; 209b, rotating rod; 209c, swing rod; 209d, push rod. Detailed implementation manners

[0019] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be given in conjunction with the accompanying drawings of the specification.

[0020] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0021] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure or characteristic that can be included in at least one implementation manner of the present invention. The "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it an individual or alternative embodiment that is mutually exclusive with other embodiments.

[0022] Furthermore, the present invention will be described in detail in conjunction with the schematic diagrams. When describing the embodiments of the present invention in detail, for the convenience of explanation, the sectional views showing the device structure will be enlarged locally in a non-general proportion, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention herein. In addition, in actual production, three-dimensional spatial dimensions including length, width and depth should be included.

[0023] Reference Figures 1-7 , the present invention provides a surface polishing device for high-pressure valves, comprising: A main body unit 100, including a box body 101, a plurality of support legs 102 are symmetrically and fixedly connected to the box body 101, and vibration motors 103 are symmetrically arranged on the box body 101; An operation unit 200, including a first partition plate 201, the first partition plate 201 is fixedly connected to the inner wall of the box body 101, a mesh plate 202 is slidably connected to the inner wall of the box body 101, abrasives are filled above the first partition plate 201, a plurality of vertical plates 203 are symmetrically and fixedly connected to the bottom surface of the mesh plate 202, the vertical plates 203 are respectively slidably inserted through the first partition plate 201 and the box body 101, gas collecting pipes 204 are symmetrically and fixedly connected to the inner bottom wall of the box body 101, a jacking assembly 205 for driving the vertical plates 203 to move is symmetrically arranged on the gas collecting pipes 204, a plurality of air outlet assemblies 206 are symmetrically arranged on the box body 101, an energy charging assembly 207 is arranged on the inner bottom wall of the box body 101, a power assembly 208 is arranged on the energy charging assembly 207, and a pushing assembly 209 is arranged between the power assembly 208 and the energy charging assembly 207.

[0024] Among them, the jacking assembly 205 includes a cylinder 205a, a solenoid valve 205b is arranged on the gas collecting pipe 204 inside the cylinder 205a, a first piston plate 205c is slidably connected to the inner wall of the cylinder 205a, a movable rod 205d is fixedly connected to the first piston plate 205c, a spring 205e is fixedly connected between the first piston plate 205c and the inner wall of the cylinder 205a, a plurality of air outlet openings 205f are formed in the cylinder 205a, a top rod 205g is fixedly connected to the movable rod 205d, an obliquely opening 205h is formed in the vertical plate 203, the top rod 205g extends into the obliquely opening 205h, when the movable rod 205d moves to both sides, the top rod 205g is driven to move to both sides, through the cooperation of the top rod 205g and the obliquely opening 205h, the vertical plate 203 is driven to move upward, the mesh plate 202 is driven to move upward, and the processed valve is jacked up.

[0025] Furthermore, the air outlet assembly 206 includes a first air outlet pipe 206a, the first air outlet pipe 206a is fixedly connected to the box body 101, a first pressure relief valve 206b is arranged on the box body 101 inside the first air outlet pipe 206a, a second air outlet pipe 206c is fixedly connected to the first air outlet pipe 206a, a plurality of third air outlet pipes 206d are fixedly connected to the second air outlet pipe 206c, a second pressure relief valve 206e is arranged on the third air outlet pipes 206d, so that when the internal air pressure of the gas collecting pipe 204 reaches the limit, the gas can be discharged outward through the first pressure relief valve 206b, then stored in the first air outlet pipe 206a and the second air outlet pipe 206c, and then discharged into the box body 101 through the third air outlet pipes 206d to scour the abrasives.

[0026] Further, the charging component 207 includes a first rectangular box 207a fixedly connected to the inner bottom wall of the box body 101. A second piston plate 207b is slidably connected to the inner side wall of the first rectangular box 207a. A sliding rod 207c is fixedly connected to the second piston plate 207b. The sliding rod 207c slidably penetrates through the first rectangular box 207a. Second rectangular boxes 207d are symmetrically and fixedly arranged on both sides of the first rectangular box 207a. The sliding rod 207c slidably penetrates through the second rectangular boxes 207d. A third piston plate 207f is fixedly connected to the sliding rod 207c. The third piston plate 207f is slidably connected to the second rectangular box 207d. A plurality of air inlet openings 207e are symmetrically formed in the second rectangular box 207d. The second rectangular box 207d is fixedly connected to the gas collecting pipe 204. A first one-way valve 207g is provided on the gas collecting pipe 204 inside the second rectangular box 207d. When the second piston plate 207b moves left and right, it can drive the sliding rod 207c to move left and right, so that the third piston plates 207f at both ends move left and right, and gas is pressed into the gas collecting pipe 204.

[0027] Further, the power component 208 includes a third rectangular box 208a fixedly connected to the first rectangular box 207a. A second partition plate 208b is fixedly connected to the inner wall of the third rectangular box 208a. A low-boiling-point evaporation liquid is filled above the second partition plate 208b. The low-boiling-point evaporation liquid is liquid dichloromethane. Steam pipes 208c are symmetrically and fixedly connected to the third rectangular box 208a. A second one-way valve 208d is provided on the steam pipes 208c. Return steam pipes 208g are symmetrically and fixedly connected between the third rectangular box 208a and the first rectangular box 207a. A third one-way valve 208h is provided on the return steam pipes 208g. The gas generated by the evaporation of the low-boiling-point evaporation liquid above the second partition plate 208b is transported downward through the steam pipes 208c below the second partition plate 208b. The gas in the first rectangular box 207a can flow back into the third rectangular box 208a through the return steam pipes 208g.

[0028] Further, the power component 208 further includes a movable cover plate 208f slidably connected to the inner bottom wall of the third rectangular box 208a. Rectangular openings 208e are symmetrically formed on both the third rectangular box 208a and the first rectangular box 207a. The movable cover plate 208f is matched with the rectangular openings 208e. When the movable cover plate 208f covers one of the rectangular openings 208e, gas enters the first rectangular box 207a through the other rectangular opening 208e, and the second piston plate 207b is pushed to move.

[0029] Furthermore, the power assembly 208 further includes a plurality of heat conducting rods 208i. The heat conducting rods 208i are fixedly inserted through the third rectangular box 208a and the first partition 201. The number of the heat conducting rods 208i is three. The heat generated by the abrasive is guided into the third rectangular box 208a through the heat conducting rods 208i to heat the low-boiling-point evaporation liquid.

[0030] Furthermore, the pushing assembly 209 includes two connecting rods 209a. The connecting rods 209a are fixedly connected to the movable cover plate 208f. The connecting rods 209a are slidably inserted through the third rectangular box 208a. Rotating rods 209b are symmetrically and rotatably connected to the front and rear inner side walls of the box body 101. A swing rod 209c is fixedly connected to the rotating rod 209b. When the rotating rod 209b rotates, the swing rod 209c can be driven to rotate to push the connecting rod 209a and drive the movable cover plate 208f to move.

[0031] Even further, the pushing assembly 209 further includes two push rods 209d. The push rods 209d are fixedly connected to the sliding rod 207c. The push rods 209d cooperate with the swing rod 209c. When the sliding rod 207c moves to the left, the push rods 209d can be driven to move leftward to push the bottom of the swing rod 209c, drive the top of the swing rod 209c to move rightward, and push the connecting rod 209a to move rightward.

[0032] During use, place the high-pressure valve to be polished into the box body 101 filled with abrasive, and then start the vibration motor 103 to polish the high-pressure valve. During the polishing process, the abrasives rub against each other to generate heat, which is transferred to the inside of the third rectangular box 208a through the heat conduction rod 208i to heat the low-boiling-point evaporation liquid. After heating, the low-boiling-point evaporation liquid is transported downward through the steam pipe 208c and enters the first rectangular box 207a through the rectangular opening 208e on one side. Subsequently, it drives the second piston plate 207b to move to the other side. After moving to a certain position, the push rod 209d pushes the swing rod 209c to make it swing, and pushes the movable cover plate 208f to move in the opposite direction together with the connecting rod 209a, so that the originally blocked rectangular opening 208e is exposed and the originally exposed rectangular opening 208e is blocked. In this way, it reciprocally drives the sliding rod 207c to move left and right. The sliding rod 207c moves left and right, driving the third piston plate 207f to move left and right, injecting gas into the gas collecting pipe 204, so that a high pressure is formed inside the gas collecting pipe 204. When the processing of the high-pressure valve is completed, open the solenoid valve 205b, and drive the first piston plate 205c to move outward under the gas pressure, so that the ejector rod 205g moves to both sides. Through the cooperation of the ejector rod 205g and the inclined opening 205h, drive the vertical plate 203 to move upward, drive the mesh plate 202 to move upward, and lift the processed valve upward, facilitating the staff to take it. While injecting gas into the gas collecting pipe 204, when the air pressure inside the gas collecting pipe 204 reaches the limit value, the gas is discharged into the first air outlet pipe 206a and the second air outlet pipe 206c for storage. When the inside also reaches the limit value, it is injected into the box body 101 through the third air outlet pipe 206d to wash the abrasive.

[0033] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A surface polishing device for high-pressure valves, characterized in that: Comprising: A main body unit (100), including a box body (101), symmetrically and fixedly connected with a plurality of support legs (102) on the box body (101), and symmetrically provided with vibration motors (103) on the box body (101); An operation unit (200), including a first partition plate (201), the first partition plate (201) is fixedly connected to the inner wall of the box body (101), a mesh plate (202) is slidably connected to the inner wall of the box body (101), abrasives are filled above the first partition plate (201), symmetrically and fixedly connected with a plurality of vertical plates (203) on the bottom surface of the mesh plate (202), the vertical plates (203) are respectively slidably inserted through the first partition plate (201) and the box body (101), symmetrically and fixedly connected with gas collecting pipes (204) on the inner bottom wall of the box body (101), a jacking assembly (205) for driving the vertical plates (203) to move is symmetrically provided on the gas collecting pipes (204), a plurality of air outlet assemblies (206) are symmetrically provided on the box body (101), an energy charging assembly (207) is provided on the inner bottom wall of the box body (101), a power assembly (208) is provided on the energy charging assembly (207), and a pushing assembly (209) is provided between the power assembly (208) and the energy charging assembly (207).

2. The surface polishing device for a high-pressure valve according to claim 1, wherein: The jacking assembly (205) includes a cylinder (205a), a solenoid valve (205b) is provided on the gas collecting pipe (204) inside the cylinder (205a), a first piston plate (205c) is slidably connected to the inner wall of the cylinder (205a), a movable rod (205d) is fixedly connected to the first piston plate (205c), a spring (205e) is fixedly connected between the first piston plate (205c) and the inner wall of the cylinder (205a), a plurality of air outlet holes (205f) are opened on the cylinder (205a), a top rod (205g) is fixedly connected to the movable rod (205d), an inclined opening (205h) is opened on the vertical plate (203), and the top rod (205g) extends into the inclined opening (205h).

3. The surface polishing device for a high-pressure valve according to claim 2, wherein: The air outlet assembly (206) includes a first air outlet pipe (206a), the first air outlet pipe (206a) is fixedly connected to the box body (101), a first pressure relief valve (206b) is provided on the box body (101) inside the first air outlet pipe (206a), a second air outlet pipe (206c) is fixedly connected to the first air outlet pipe (206a), a plurality of third air outlet pipes (206d) are fixedly connected to the second air outlet pipe (206c), and a second pressure relief valve (206e) is provided on the third air outlet pipe (206d).

4. A surface polishing device for a high-pressure valve according to claim 3, characterized in that: The charging component (207) includes a first rectangular box (207a) fixedly connected to the inner bottom wall of the box body (101). A second piston plate (207b) is slidably connected to the inner side wall of the first rectangular box (207a). A sliding rod (207c) is fixedly connected to the second piston plate (207b). The sliding rod (207c) slidably penetrates through the first rectangular box (207a). Second rectangular boxes (207d) are symmetrically and fixedly arranged on both sides of the first rectangular box (207a). The sliding rod (207c) slidably penetrates through the second rectangular boxes (207d). A third piston plate (207f) is fixedly connected to the sliding rod (207c). The third piston plate (207f) is slidably connected to the second rectangular box (207d). A plurality of air inlet openings (207e) are symmetrically formed in the second rectangular box (207d). The second rectangular box (207d) is fixedly connected to the gas collecting pipe (204). A first one-way valve (207g) is provided on the gas collecting pipe (204) inside the second rectangular box (207d).

5. The surface polishing device for a high-pressure valve according to claim 4, characterized in that: The power component (208) includes a third rectangular box (208a) fixedly connected to the first rectangular box (207a). A second partition plate (208b) is fixedly connected to the inner wall of the third rectangular box (208a). A low-boiling-point evaporation liquid is filled above the second partition plate (208b). Steam pipes (208c) are symmetrically and fixedly connected to the third rectangular box (208a). A second one-way valve (208d) is provided on the steam pipe (208c). Return steam pipes (208g) are symmetrically and fixedly connected between the third rectangular box (208a) and the first rectangular box (207a). A third one-way valve (208h) is provided on the return steam pipe (208g).

6. The surface polishing device for a high-pressure valve according to claim 5, wherein: The power component (208) further includes a movable cover plate (208f) slidably connected to the inner bottom wall of the third rectangular box (208a). Rectangular openings (208e) are symmetrically formed on both the third rectangular box (208a) and the first rectangular box (207a). The movable cover plate (208f) is matched with the rectangular openings (208e).

7. A surface polishing device for a high-pressure valve according to claim 6, characterized in that: The power component (208) further includes a plurality of heat conduction rods (208i) fixedly penetrating through the third rectangular box (208a) and the first partition plate (201). The number of the heat conduction rods (208i) is three.

8. The surface polishing device for a high-pressure valve according to claim 7, characterized in that: The pushing component (209) includes two connecting rods (209a) fixedly connected to the movable cover plate (208f). The connecting rods (209a) slidably penetrate through the third rectangular box (208a). Rotating rods (209b) are symmetrically and rotatably connected to the inner side walls of the front and rear of the box body (101). Swing rods (209c) are fixedly connected to the rotating rods (209b).

9. A surface polishing device for a high-pressure valve according to claim 8, characterized in that: The pushing component (209) further includes two push rods (209d), which are fixedly connected to the sliding rod (207c), and the push rods (209d) cooperate with the swing rod (209c).

10. A polishing method for a surface polishing device of a high-pressure valve according to claims 1-9, characterized in that: It includes the following steps: S1. Place the high-pressure valve to be polished into the box body (101) filled with abrasive, and then start the vibration motor (103) to polish the high-pressure valve. S2. During the polishing process, heat is generated by the mutual friction of the abrasive and is transmitted to the inside of the third rectangular box (208a) through the heat conducting rod (208i) to heat the low-boiling-point evaporation liquid. After heating, the low-boiling-point evaporation liquid is transported downward through the steam pipe (208c) and enters the first rectangular box (207a) through the rectangular opening (208e) on one side. Then, it drives the second piston plate (207b) to move to the other side. After moving to a certain position, the push rod (209d) pushes the swing rod (209c) to make it swing, and drives the movable cover plate (208f) to move in the opposite direction together with the connecting rod (209a), so that the originally blocked rectangular opening (208e) is exposed and the originally exposed rectangular opening (208e) is blocked. In this way, it reciprocally drives the sliding rod (207c) to move left and right. S3. The sliding rod (207c) moves left and right, driving the third piston plate (207f) to move left and right, injecting gas into the gas collecting pipe (204), so that a high pressure is formed inside the gas collecting pipe (204). S4. When the processing of the high-pressure valve is completed, open the solenoid valve (205b). Under the gas pressure, drive the first piston plate (205c) to move outward, so that the ejector rod (205g) moves to both sides. Through the cooperation of the ejector rod (205g) and the inclined opening (205h), drive the vertical plate (203) to move upward, drive the mesh plate (202) to move upward, and lift the processed valve upward, facilitating the staff to take it. S5. While injecting gas into the gas collecting pipe (204), when the internal air pressure of the gas collecting pipe (204) reaches the limit value, the gas is discharged into the first air outlet pipe (206a) and the second air outlet pipe (206c) for storage. When the internal pressure of them also reaches the limit value, it is injected into the box body (101) through the third air outlet pipe (206d) to wash the abrasive.

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