Leak-proof device for valve body of double-gate valve

Abstract

The utility model relates to a leakage-proof device for a valve body of a double-gate valve, and relates to the technical field of valves. The leakage-proof valve comprises a valve seat and an air cylinder, the air cylinder is arranged on the valve seat, an output shaft of the air cylinder penetrates through the valve seat and can move on the valve seat, the output shaft of the air cylinder is sleeved with a leakage-proof seat, the leakage-proof seat is arranged on the valve seat, a moving hole is formed in the end of the leakage-proof seat in a penetrating mode, and the output shaft of the air cylinder is coaxially inserted into the moving hole and can move in the moving hole. An output shaft of the cylinder is in clearance fit with the moving hole. The device has the effect that the working environment is not prone to being polluted.

Description

Technical Field

[0001] The present application relates to the field of valves, and in particular to a double-slide valve body anti-leakage device. Background Art

[0002] The double-disc valve body mainly includes a valve body and a linear drive mechanism. In order to improve the sealing performance of the valve body during operation, a sealing ring and a clamping block are usually provided at the contact point between the output end of the linear drive mechanism and the valve body. The clamping block is connected to the valve body by bolts.

[0003] After long-term use, dust or materials in the valve body are easily scattered from the contact point between the linear drive structure and the sealing ring, making the valve body very likely to cause pollution to the working environment when in use, so it needs to be improved. Utility Model Content

[0004] In order to improve the problem that dust or materials in the valve body are easily scattered from the valve body, causing pollution to the working environment, the present application provides a double-plate valve body anti-leakage device.

[0005] The present application provides a double-slide valve body anti-leakage device that adopts the following technical solution:

[0006] A double-disc valve body anti-leakage device comprises a valve seat and a cylinder, wherein the cylinder is arranged on the valve seat, the output shaft of the cylinder passes through the valve seat and can move on the valve seat, the output shaft of the cylinder is sleeved with a leak-proof seat, the leak-proof seat is arranged on the valve seat, the end of the leak-proof seat is penetrated by a moving hole, the output shaft of the cylinder is coaxially inserted in the moving hole and can swim in the moving hole, and the output shaft of the cylinder is clearance-matched with the moving hole.

[0007] By adopting the above technical solution, when in use, one end of the leak-proof seat is first fixedly installed on the valve seat, and then the output shaft of the cylinder is coaxially passed through the movable hole and extended into the valve seat, and the shell of the cylinder is installed on the other end of the leak-proof seat. When the dust or material in the valve seat is dispersed out of the valve seat from the connection between the output shaft of the cylinder and the valve seat, the dust or material will be stored in the movable hole and will not be dispersed to the outside world, making the working environment less likely to be polluted.

[0008] Optionally, a serration strip is provided on one end of the leak-proof seat close to the valve seat, and a slot is provided on the side wall of the valve seat, and the serration strip can be adapted to be inserted into the slot.

[0009] By adopting the above technical solution, after the leak-proof seat is installed on the valve seat, the serrated bar is inserted into the slot, so that the connection between the valve seat and the leak-proof seat is uneven. When the dust or material in the valve seat leaks into the moving hole, a small amount of dust will enter between the leak-proof seat and the valve seat. The serrated path not only increases the moving trajectory, but the raised part of the path also blocks the dust, limiting the passage of dust, so that the dust will not disperse to the outside and affect the working environment.

[0010] Optionally, a rubber pad is fixed on a side of the serrated bar close to the valve seat, and the rubber pad can abut against the inner wall of the slot.

[0011] By adopting the above technical solution, the rubber pad is made of flexible material and is easy to deform, which can fill the gap between the sawtooth bar and the inner wall of the slot, so that the sawtooth bar and the slot are tightly attached, thereby preventing dust from being easily dispersed to the outside through the gap between the sawtooth bar and the inner wall of the slot.

[0012] Optionally, a cavity is defined in the rubber pad, and a pressing spring is disposed in the cavity.

[0013] By adopting the above technical solution, the pressing spring applies a pushing force to the rubber pad, so that the rubber pad is more tightly pressed against the inner wall of the slot, thereby further reducing the possibility of a gap between the rubber pad and the slot, and making it difficult for dust to be dispersed to the outside and pollute the environment.

[0014] Optionally, a mounting sleeve is provided in the movable hole, the mounting sleeve is coaxial with the movable hole, and the outer wall of the mounting sleeve is in contact with the inner wall of the movable hole. The output shaft of the cylinder is coaxially inserted in the mounting sleeve and has a clearance fit with the mounting sleeve.

[0015] By adopting the above technical solution, when dust or material in the valve seat leaks into the movable hole, the dust and material are in the installation sleeve. The installation sleeve is directly pulled out from the movable hole to clean the installation sleeve. After the installation sleeve is cleaned, it is inserted into the movable hole and can be reused, thereby realizing the cleaning of dust or material in the leak-proof seat, and the operation is convenient.

[0016] Optionally, a magnet is provided on the outer wall of the mounting sleeve, and the magnet can be attracted to the inner wall of the movable hole.

[0017] By adopting the above technical solution, when the installation sleeve is fully inserted into the movable hole, the magnet is adsorbed on the inner wall of the movable hole, making it difficult for the installation sleeve to move out of the movable hole, thereby realizing the installation of the installation sleeve on the leak-proof seat.

[0018] Optionally, a positioning hole is provided on the inner wall of the movable hole, a positioning block is inserted into the positioning hole, the positioning block is connected to the inner wall of the positioning hole through a connecting spring, the connecting spring is used to push the positioning block out of the positioning hole, the positioning block is connected to a pull rope, the end of the pull rope away from the positioning block extends out of the leak-proof seat, and a mounting hole for inserting the positioning block is provided on the outer wall of the mounting sleeve.

[0019] By employing this technical solution, pulling the pull cord causes the positioning block to squeeze the connecting spring until the positioning block is accommodated in the positioning hole, thereby facilitating the insertion of the mounting sleeve into the movable hole. Once the mounting sleeve is fully inserted into the movable hole, and the mounting hole is aligned with the positioning hole, the connecting spring recovers its elastic force, pushing the positioning block out of the positioning hole and inserting it into the mounting hole. At this point, the inner wall of the mounting hole abuts the side wall of the positioning block, restricting the positioning block from moving in the movable hole and enhancing the stability of the mounting sleeve installed in the leak-proof seat.

[0020] When the installation sleeve needs to be disassembled, the pull rope is pulled again to pull the positioning block out of the installation hole, and the installation sleeve can be pulled out of the movable hole to achieve the disassembly of the installation sleeve.

[0021] Optionally, a guide surface is provided on the side wall of the positioning block, and the guide surface is provided at one end of the positioning block close to the central axis of the movable hole. The mounting sleeve abuts against the guide surface to push the positioning block into the positioning hole.

[0022] By adopting the above technical solution, when the installation sleeve is inserted from one end opening of the movable hole and moves to the positioning block, the end of the installation sleeve abuts against the guide surface. The installation sleeve continues to penetrate deeper, and the guide surface plays a guiding role, allowing the installation sleeve to slide on the guide surface, pushing the positioning block to move in the direction of the positioning hole until the positioning block squeezes the connecting spring and is accommodated in the positioning hole, so that there is no protrusion on the inner wall of the movable hole, which facilitates the movement of the installation sleeve. When the installation sleeve is fully inserted into the movable hole, the installation hole is now aligned with the positioning block. Under the action of the connecting spring, the positioning block extends from the positioning hole at the end closest to the installation sleeve and is inserted into the installation hole, thereby achieving the installation of the installation sleeve in the leak-proof seat. During this process, the installation sleeve can be installed without pulling the pull rope, which is convenient to operate.

[0023] In summary, this application has at least one of the following beneficial effects:

[0024] 1. When in use, first fix one end of the leak-proof seat on the valve seat, then coaxially pass the output shaft of the cylinder through the movable hole and extend into the valve seat, and the shell of the cylinder is installed on the other end of the leak-proof seat. When the dust or material in the valve seat is dispersed from the valve seat through the connection between the output shaft of the cylinder and the valve seat, the dust or material will be stored in the movable hole and will not be dispersed to the outside, making the working environment less likely to be polluted;

[0025] 2. After the leak-proof seat is installed on the valve seat, the serrated strip is inserted into the slot, making the connection between the valve seat and the leak-proof seat uneven. When the dust or material in the valve seat leaks into the moving hole, a small amount of dust will enter between the leak-proof seat and the valve seat. The serrated path not only increases the moving trajectory, but the raised part of the path also blocks the dust, limiting the passage of dust, so that the dust will not be scattered to the outside and affect the working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of a double-slide valve body anti-leakage device according to an embodiment of the present application;

[0027] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0028] Figure 3 for Figure 1 Enlarged view of point B in the middle.

[0029] In the figure: 10, valve seat; 11, slot; 20, cylinder; 30, leak-proof seat; 31, movable hole; 32, serrated bar; 33, positioning hole; 40, rubber pad; 41, cavity; 42, pressing spring; 50, mounting sleeve; 51, magnet; 52, mounting hole; 60, positioning block; 61, guide surface; 62, pull rope; 70, connecting spring. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-3 This application is described in further detail.

[0031] The embodiment of the present application discloses a double-slide valve body anti-leakage device. Figure 1 and Figure 2 The double-slide valve body anti-leakage device includes a valve seat 10, a leak-proof seat 30 is installed on the side wall of the valve seat 10 by bolts, and a movable hole 31 is opened through the end of the leak-proof seat 30, and the movable hole 31 is connected to the valve seat 10. A cylinder 20 is installed on the end of the leak-proof seat 30 away from the valve seat 10 by bolts, and the output shaft of the cylinder 20 is coaxially penetrated by the movable hole 31 and extends into the valve seat 10.

[0032] During use, when dust or materials in the valve seat 10 are dispersed out of the valve seat 10 from the connection between the output shaft of the cylinder 20 and the valve seat 10, the dust or materials will be stored in the moving hole 31 and will not be dispersed to the outside, making the working environment less likely to be polluted.

[0033] Reference Figure 1 and Figure 2To enhance the tightness of the connection between the leak-proof seat 30 and the valve seat 10, a serrated strip 32 is fixed to the end of the leak-proof seat 30 near the valve seat 10. A rubber pad 40 is fixed to the side of the serrated strip 32 near the valve seat 10. A corresponding serrated slot 11 is defined on the sidewall of the valve seat 10. The serrated strip 32 fits into the slot 11, and the rubber pad 40 abuts against the inner wall of the slot 11. Because the rubber pad 40 is flexible and easily deformable, it fills the gap between the serrated strip 32 and the inner wall of the slot 11, ensuring a tight fit between the serrated strip 32 and the slot 11.

[0034] A cavity 41 is also provided in the rubber pad 40, and a pressing spring 42 is provided in the cavity 41. Both ends of the pressing spring are fixed to the inner wall of the cavity 41. The pressing spring 42 applies a pushing force to the rubber pad 40, so that the rubber pad 40 is more tightly pressed against the inner wall of the slot 11, thereby further reducing the possibility of a gap between the rubber pad 40 and the slot 11, and making it difficult for dust to be dispersed to the outside and pollute the environment.

[0035] Reference Figure 1 and Figure 2 When dust or material in the valve seat 10 enters the movable hole 31, in order to facilitate cleaning of the leak-proof seat 30, a mounting sleeve 50 is coaxially inserted into the movable hole 31. The outer wall of the mounting sleeve 50 is in contact with the inner wall of the movable hole 31, and the output shaft of the cylinder 20 is coaxially inserted in the mounting sleeve 50, and there is a gap between the output shaft and the inner wall of the mounting sleeve 50.

[0036] When the dust or material in the valve seat 10 leaks into the movable hole 31, the dust and material are in the installation sleeve 50. The installation sleeve 50 is directly pulled out from the movable hole 31 to clean the installation sleeve 50. After the installation sleeve 50 is cleaned, it is inserted into the movable hole 31 and can be reused, thereby cleaning the dust or material in the leak-proof seat 30, and the operation is convenient.

[0037] Reference Figure 1 and Figure 3To increase the stability of the installation sleeve 50 in the leak-proof seat 30, a magnet 51 is provided on the outer wall of the installation sleeve 50. The magnet 51 can be attracted to the inner wall of the movable hole 31, making it difficult for the installation sleeve 50 to move out of the movable hole 31. To further prevent the installation sleeve 50 from rotating and moving in the movable hole 31, a positioning hole 33 is opened on the inner wall of the movable hole 31. A positioning block 60 is inserted into the positioning hole 33. A connecting spring 70 is provided in the positioning hole 33. One end of the connecting spring 70 is fixed to the positioning hole 33, and the other end is fixed to the positioning block 60. The connecting spring 70 is used to push the positioning block 60 out of the positioning hole 33. A guide surface 61 is cut into the side wall of the positioning block 60. The guide surface 61 is located at the end of the positioning block 60 that extends out of the positioning hole 33. The guide surface 61 is inclined toward the central axis of the positioning block 60 away from the end of the connecting spring 70.

[0038] Reference Figure 1 and Figure 3 The positioning block 60 is fixed with a pull rope 62. The end of the pull rope 62 away from the positioning block 60 extends out of the leak-proof seat 30. The outer wall of the installation sleeve 50 is provided with a mounting hole 52. When the installation sleeve 50 is inserted from one end opening of the movable hole 31 and the installation sleeve 50 moves to the positioning block 60, the end of the installation sleeve 50 abuts against the guide surface 61. The installation sleeve 50 continues to move deeper. The guide surface 61 acts as a guide, allowing the installation sleeve 50 to slide on the guide surface 61, pushing the positioning block 60 toward the positioning hole 33 until the positioning block 60 squeezes the connecting spring 70 and is accommodated in the positioning hole 33, leaving no protrusion on the inner wall of the movable hole 31, facilitating the movement of the installation sleeve 50. When the installation sleeve 50 is fully inserted into the movable hole 31, the installation sleeve 50 is rotated until the mounting hole 52 is aligned with the positioning hole 33. At this time, the positioning block 60 is inserted into the mounting hole under the action of the connecting spring 70, and the installation sleeve 50 is installed in the leak-proof seat 30.

[0039] When the installation sleeve 50 needs to be disassembled, the pull rope 62 is pulled to remove the positioning block 60 from the installation hole 52 , and the installation sleeve 50 can be pulled out of the moving hole 31 , thereby achieving disassembly of the installation sleeve 50 .

[0040] The implementation principle of the double-disc valve body leakage prevention device of the embodiment of the present application is: when in use, one end of the leakage prevention seat 30 is first fixedly installed on the valve seat 10, and then the output shaft of the cylinder 20 is coaxially passed through the movable hole 31 and extended into the valve seat 10, and the shell of the cylinder 20 is installed on the other end of the leakage prevention seat 30. When the dust or material in the valve seat 10 is dispersed out of the valve seat 10 from the connection between the output shaft of the cylinder 20 and the valve seat 10, the dust or material will be stored in the movable hole 31 and will not be dispersed to the outside world, so that the working environment is not easily polluted.

[0041] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A double-slide valve body anti-leakage device, characterized in that: The invention comprises a valve seat (10) and a cylinder (20), wherein the cylinder (20) is arranged on the valve seat (10), the output shaft of the cylinder (20) penetrates the valve seat (10) and can move on the valve seat (10), the output shaft of the cylinder (20) is sleeved with a leak-proof seat (30), the leak-proof seat (30) is arranged on the valve seat (10), the end of the leak-proof seat (30) is penetrated by a moving hole (31), the output shaft of the cylinder (20) is coaxially inserted in the moving hole (31) and can move in the moving hole (31), and the output shaft of the cylinder (20) is clearance-matched with the moving hole (31); A sawtooth strip (32) is provided on one end of the leak-proof seat (30) close to the valve seat (10), a slot (11) is provided on the side wall of the valve seat (10), and the sawtooth strip (32) can be adapted to be inserted into the slot (11); A rubber pad (40) is fixed on one side of the sawtooth bar (32) close to the valve seat (10), and the rubber pad (40) can abut against the inner wall of the slot (11); A cavity (41) is provided in the rubber pad (40), and a pressing spring (42) is provided in the cavity (41).

2. The double-slide valve body anti-leakage device according to claim 1, characterized in that: A mounting sleeve (50) is provided in the movable hole (31), the mounting sleeve (50) is coaxial with the movable hole (31), and the outer wall of the mounting sleeve (50) abuts against the inner wall of the movable hole (31), and the output shaft of the cylinder (20) is coaxially inserted in the mounting sleeve (50) and is clearance-matched with the mounting sleeve (50).

3. The double-slide valve body anti-leakage device according to claim 2, characterized in that: A magnet (51) is provided on the outer wall of the mounting sleeve (50), and the magnet (51) can be attracted to the inner wall of the moving hole (31).

4. The double-slide valve body anti-leakage device according to claim 2, characterized in that: A positioning hole (33) is provided on the inner wall of the movable hole (31), a positioning block (60) is inserted into the positioning hole (33), the positioning block (60) is connected to the inner wall of the positioning hole (33) via a connecting spring (70), the connecting spring (70) is used to push the positioning block (60) out of the positioning hole (33), the positioning block (60) is connected to a pull rope (62), one end of the pull rope (62) away from the positioning block (60) extends out of the leak-proof seat (30), and a mounting hole (52) for inserting the positioning block (60) is provided on the outer wall of the mounting sleeve (50).

5. The double-slide valve body anti-leakage device according to claim 4, characterized in that: A guide surface (61) is provided on the side wall of the positioning block (60). The guide surface (61) is provided at one end of the positioning block (60) close to the central axis of the movable hole (31). The mounting sleeve (50) abuts against the guide surface (61) to push the positioning block (60) into the positioning hole (33).

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