Polishing device for valve rod surface treatment

Abstract

The utility model discloses a valve rod surface treatment polishing device which comprises a main body, a polishing cavity is formed in the main body, a threaded rod is rotatably arranged at the lower end in the polishing cavity, one side of the outer portion of the threaded rod is in threaded connection with a moving seat, and rotating shafts are rotatably arranged on the lower side of one side of the polishing cavity and the inner side of the moving seat. And a three-jaw chuck is installed at one end of each rotating shaft, a dust collection cavity is formed in one side of the interior of the main body, and three dust screens distributed at equal intervals are arranged in the dust collection cavity. According to the polishing device for surface treatment of the valve rod, frequent manual adjustment or tool replacement is not needed, the valve rod is convenient and fast to use, the application range is widened due to length adaptation, practicability is good, meanwhile, dust is prevented from escaping into the working environment, and the body health of operators is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of valve stem processing technology, specifically a polishing device for valve stem surface treatment. Background Technology

[0002] The valve stem is a crucial component of a valve, primarily functioning as a transmission mechanism. It connects to the actuator or handle at the top and directly drives the valve core to move or rotate, thereby achieving the valve's opening, closing, or regulating action. During valve opening and closing, the valve stem is not only a moving and load-bearing component but also a sealing element. During manufacturing and use, the valve stem's surface may suffer various damages, such as scratches, oxidation, and corrosion. These surface defects not only affect the valve stem's aesthetics but, more importantly, reduce its sealing performance, wear resistance, and corrosion resistance. Polishing can remove these surface defects, making the valve stem surface smoother and thus improving the valve's sealing performance.

[0003] Chinese Patent CN212886955U discloses a polishing device for valve stem production, including a processing base. Two support pads are fixedly installed on the left and right sides of the bottom of the processing base. A bearing plate is fixedly installed on the left and right sides of the top of the processing base. A power box is fixedly installed on the left side of the bearing plate. A power motor is fixedly installed inside the power box. The output shaft of the power motor passes through the bearing plate and is fixedly installed with a clamping frame. Threaded adjusting rods that pass through the clamping frame are movably installed on the top and bottom of the clamping frame. A gap shim is movably installed on the opposite side of the two threaded adjusting rods.

[0004] While the above solution can prevent the valve stem from breaking during processing, the dust generated by the polishing device during valve stem surface polishing can easily escape into the working environment, thus polluting the working environment and potentially harming the health of operators. In addition, it is difficult to adapt to valve stems of different lengths, requiring frequent manual adjustments or tooling changes, which affects ease of use. Therefore, it does not meet the current needs. To address this, we propose a polishing device for valve stem surface treatment. Utility Model Content

[0005] The purpose of this invention is to provide a polishing device for valve stem surface treatment, so as to solve the problems of dust emission during polishing that may harm the health of operators and the difficulty in adapting to valve stems of different lengths.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a polishing device for valve stem surface treatment, comprising a main body, a polishing cavity inside the main body, a threaded rod rotatably disposed at the lower end of the polishing cavity, a movable seat threadedly connected to one side of the threaded rod, a rotating shaft rotatably disposed on the lower side of one side of the polishing cavity and the inner side of the movable seat, a three-jaw chuck being installed at one end of each rotating shaft, a dust collection cavity being disposed on one side of the main body, and three equidistant dustproof nets disposed inside the dust collection cavity.

[0007] Preferably, a first motor is provided on one side of the polishing chamber, and the output end of the first motor is connected to one of the rotating shafts via a coupling.

[0008] Preferably, a second motor is provided at the lower end of the polishing chamber, and the output end of the second motor is connected to the threaded rod via a coupling.

[0009] Preferably, two guide rods are provided above the threaded rod, and the two ends of the guide rods are welded and fixed to the polishing cavity. The guide rods pass through the movable seat and slide with the movable seat.

[0010] Preferably, an air suction machine is provided below the dust collection chamber, and two dust suction hoods are installed on one side of the interior of the polishing chamber by bolts. The dust collection chamber is connected to the air suction machine and the dust suction hoods by connecting pipes.

[0011] Preferably, an electric slide rail is installed at the upper end of the polishing cavity, an electric telescopic rod is provided at the moving end of the electric slide rail, and an arc-shaped polishing disc is installed at the output end of the electric telescopic rod.

[0012] Preferably, a first sealing door is installed on both sides of the front end of the main body, and a transparent glass window is installed at the front end of each of the first sealing doors, and a second sealing door is installed on one side of the main body.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) This utility model has a dust collection chamber on one side inside the main body. When the valve stem is polished, the air suction machine can be started. The air suction machine will suck away the air in the dust collection chamber. The dust suction hood can generate suction through the connection of the connecting pipe, which can suck the dust generated by polishing into the dust collection chamber. The dust can be intercepted through the dustproof net, so that the generated dust can be collected in the dust collection chamber, preventing the dust from escaping into the working environment and ensuring the health of the operators.

[0015] (2) This utility model has a threaded rod rotatably installed at the lower end inside the polishing cavity. By starting the second motor, the threaded rod can be rotated, thereby driving the moving seat to move horizontally. When the moving seat moves, it can drive one of the three-jaw chucks to move. In this way, the distance between the two three-jaw chucks can be controlled to adapt to valve stems of different lengths. There is no need to frequently manually adjust or change the tooling, making the valve stem convenient and quick. The adaptability of the length increases the scope of application and has good practicality.

[0016] (3) This utility model has two first sealing doors installed at the front end of the main body. When the valve stem is polished, the two first sealing doors can be closed, and a closed working environment is formed inside the polishing chamber. This effectively isolates the dust generated during the polishing operation, further prevents the dust from polluting the working environment, and further protects the health and safety of the operators. At the same time, the inside of the polishing chamber can be observed through the transparent glass window on the first sealing door, ensuring the optimization of polishing quality and efficiency. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a front view schematic diagram of the internal structure of this utility model;

[0019] Figure 3 This is a side view of the internal structure of this utility model;

[0020] Figure 4 For the present utility model Figure 2 Enlarged view of a portion of region A in the middle.

[0021] In the diagram: 1. Main body; 2. Polishing chamber; 3. Electric slide rail; 4. Electric telescopic rod; 5. Arc-shaped polishing disc; 6. First motor; 7. Three-jaw chuck; 8. Rotary shaft; 9. Moving seat; 10. Second motor; 11. Threaded rod; 12. Guide rod; 13. Dust hood; 14. Connecting pipe; 15. Dust collection chamber; 16. Dustproof net; 17. Air suction machine; 18. First sealing door; 19. Second sealing door. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-4This utility model provides a technical solution: a polishing device for valve stem surface treatment, including a main body 1, a polishing cavity 2 inside the main body 1, a threaded rod 11 rotatably disposed at the lower end of the polishing cavity 2, a movable seat 9 threadedly connected to one side of the threaded rod 11, a rotating shaft 8 rotatably disposed on the lower side of one side of the polishing cavity 2 and the inner side of the movable seat 9, a three-jaw chuck 7 installed at one end of each rotating shaft 8, a dust collection cavity 15 disposed on one side of the main body 1, three dustproof nets 16 evenly distributed inside the dust collection cavity 15, two guide rods 12 disposed above the threaded rod 11, and the two ends of the guide rods 12 are welded and fixed to the polishing cavity 2, the guide rods 12 pass through the movable seat 9, and the guide rods 12 and the movable seat 9 are slidably engaged, an electric slide rail 3 is installed at the upper end of the polishing cavity 2, an electric telescopic rod 4 is disposed at the moving end of the electric slide rail 3, and an arc-shaped polishing plate 5 is installed at the output end of the electric telescopic rod 4.

[0024] Open the first sealing door 18, fix the valve stem to the three-jaw chuck 7, start the second motor 10 to drive the threaded rod 11 to move the moving seat 9 horizontally, adjust and fix the valve stem, the electric telescopic rod 4 makes the arc-shaped polishing disc 5 contact the valve stem, the first motor 6 drives the three-jaw chuck 7 to rotate, and at the same time the electric slide rail 3 drives the polishing disc to move horizontally to achieve polishing. The dust generated by polishing is sucked into the dust collection chamber 15 through the dust suction hood 13, connecting pipe 14 and air suction machine 17. The dustproof net 16 intercepts the dust. Close the first sealing door 18 to prevent dust from escaping. Open the second sealing door 19 to handle the dust collection.

[0025] Please see Figure 2 A first motor 6 is provided on one side of the polishing chamber 2, and the output end of the first motor 6 is connected to one of the rotating shafts 8 through a coupling. The first motor 6 drives the rotating shaft 8 to rotate efficiently and stably, thereby driving the three-jaw chuck 7 and the valve rod fixed thereon to rotate at a uniform speed, providing the necessary power support for the polishing operation and ensuring the uniformity and consistency of the polishing effect.

[0026] Please see Figure 2 The lower end of the polishing chamber 2 is equipped with a second motor 10, and the output end of the second motor 10 is connected to the threaded rod 11 through a coupling. Driven by the second motor 10, the threaded rod 11 can precisely control the horizontal movement of the moving seat 9, realize the adaptive adjustment of the valve stem length, improve the versatility and ease of operation of the equipment, and at the same time ensure the stable clamping of the valve stem during the polishing process.

[0027] Please see Figure 2 and Figure 4Below the dust collection chamber 15, an air suction machine 17 is installed. Two dust suction hoods 13 are bolted to one side of the polishing chamber 2. The dust collection chamber 15 is connected to the air suction machine 17 and the dust suction hoods 13 through connecting pipes 14. The air suction machine 17 generates negative pressure so that the dust suction hoods 13 can effectively capture the dust generated during the polishing process and introduce it into the dust collection chamber 15 through the connecting pipes 14, which avoids the spread of dust and protects the operating environment. At the same time, the dustproof net 16 in the dust collection chamber 15 further ensures the effective collection of dust and facilitates subsequent processing.

[0028] Please see Figure 1 The main body 1 has two first sealing doors 18 installed on both sides of the front end, and each of the first sealing doors 18 has a transparent glass window installed at the front end. The first sealing doors 18 not only ensure the sealing of the polishing chamber 2 during operation and prevent dust leakage, but also the design of the transparent glass window allows the operator to directly observe the polishing process, which is convenient for monitoring and adjustment. A second sealing door 19 is installed on one side of the main body 1. The setting of the second sealing door 19 facilitates the regular cleaning of dust in the dust collection chamber 15, maintaining the cleanliness and efficient operation of the equipment. The overall design takes into account both practicality and ease of operation.

[0029] Working principle: In use, open the first sealing door 18 and fix one end of the valve stem through one of the three-jaw chucks 7. Start the second motor 10, which will rotate the threaded rod 11 through the coupling. The threaded rod 11 will drive the moving seat 9 to rotate synchronously. Due to the sliding fit between the moving seat 9 and the guide rod 12, the moving seat 9 will be axially limited. The rotation of the moving seat 9 will be converted into horizontal linear movement. The moving seat 9 will drive the other three-jaw chuck 7 to move, so that it can be adjusted according to the length of the valve stem. Fix the three-jaw chuck 7 to the other end of the valve stem to effectively fix the valve stem and prevent it from falling off during polishing. When polishing, start the electric telescopic rod 4 to drive its output end to move the arc-shaped polishing plate 5 down, so that the arc-shaped polishing plate 5 contacts the outer wall of the valve stem. After starting the first motor 6, the rotating shaft 8 can be driven... The rotating three-jaw chuck 7 activates the electric slide rail 3, which in turn moves the arc-shaped polishing disc 5 horizontally to polish the valve stem. During polishing, the two first sealing doors 18 can be closed to prevent dust from escaping. Simultaneously, the suction machine 17 is activated, which extracts the gas from the dust collection chamber 15 through the connecting pipe 14, creating a negative pressure inside the dust collection chamber 15. The connecting pipe 14 then generates suction from the two dust suction hoods 13, drawing the dust that has escaped from the polishing chamber 2 into the dust collection chamber 15. The dustproof net 16 inside the dust collection chamber 15 intercepts the dust, collecting it inside the chamber and preventing its escape, thus protecting the health of the operator. Furthermore, the dust inside the dust collection chamber 15 can be treated by opening the second sealing door 19, achieving a long-term dust collection effect.

[0030] 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 polishing apparatus for valve stem surface treatment, comprising a main body (1), characterized in that: The main body (1) has a polishing chamber (2) inside. A threaded rod (11) is rotatably provided at the lower end of the polishing chamber (2). A movable seat (9) is threadedly connected to one side of the threaded rod (11). A rotating shaft (8) is rotatably provided on the lower side of one side of the polishing chamber (2) and the inner side of the movable seat (9). A three-jaw chuck (7) is installed at one end of each rotating shaft (8). A dust collection chamber (15) is provided on one side of the main body (1). Three dustproof nets (16) are arranged equidistantly inside the dust collection chamber (15).

2. The polishing apparatus for valve stem surface treatment according to claim 1, characterized in that: A first motor (6) is provided on one side of the polishing chamber (2), and the output end of the first motor (6) is connected to one of the rotating shafts (8) via a coupling.

3. The polishing apparatus for valve stem surface treatment according to claim 1, characterized in that: The lower end of the polishing chamber (2) is provided with a second motor (10), and the output end of the second motor (10) is connected to the threaded rod (11) through a coupling.

4. The polishing apparatus for valve stem surface treatment according to claim 1, characterized in that: Two guide rods (12) are provided above the threaded rod (11), and the two ends of the guide rods (12) are welded and fixed to the polishing cavity (2). The guide rods (12) pass through the movable seat (9), and the guide rods (12) and the movable seat (9) are slidably engaged.

5. The polishing apparatus for valve stem surface treatment according to claim 1, characterized in that: A suction machine (17) is provided below the dust collection chamber (15). Two dust collection hoods (13) are installed on one side of the polishing chamber (2) by bolts. The dust collection chamber (15) is connected to the suction machine (17) and the dust collection hoods (13) by connecting pipes (14).

6. The polishing apparatus for valve stem surface treatment according to claim 1, characterized in that: An electric slide rail (3) is installed at the upper end of the polishing chamber (2). An electric telescopic rod (4) is provided at the moving end of the electric slide rail (3). An arc-shaped polishing disc (5) is installed at the output end of the electric telescopic rod (4).

7. The polishing apparatus for valve stem surface treatment according to claim 1, characterized in that: The main body (1) has a first sealing door (18) installed on both sides of the front end, and the front end of each of the first sealing door (18) is equipped with a transparent glass window. The main body (1) has a second sealing door (19) installed on one side.

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