Valve capable of reducing welding amount

Abstract

The utility model relates to a valve capable of reducing welding quantity, which comprises a supporting part and a sealing part, the supporting part comprises a valve body and a fixed seat, and two sides of the fixed seat are connected with the valve body through rivets; the sealing part comprises a valve rod, a valve plate, a first shaft sleeve, a first lining, a second shaft sleeve and a second lining, the valve rod penetrates through the valve body in the radial line direction of the valve body, and one end of the valve rod penetrates through the fixing seat; the first bushing and the second bushing are arranged between the valve body and the valve rod; the first bushing and the second bushing are sleeved with the first shaft sleeve and the second shaft sleeve correspondingly, and the first shaft sleeve and the second shaft sleeve are in threaded connection with the first bushing and the second bushing correspondingly. The valve plate is arranged in the valve body, and the valve plate is detachably connected with the valve rod. According to the utility model, the mounting seat is riveted with the valve body, and the shaft sleeve and the valve rod are in threaded connection with the valve body, so that the welding of the mounting seat, the shaft sleeve and the valve rod is eliminated, and the welding quantity is reduced, thereby reducing the deformation caused by welding and reducing errors.

Description

Technical Field

[0001] This utility model relates to the field of process exhaust pipe connection technology, and in particular to a valve that reduces the amount of welding. Background Technology

[0002] An exhaust valve is a device used to release gas from pipes or containers. It has important applications in many fields, especially in the semiconductor industry, where high precision is required for valves, thus necessitating a valve with minimal deformation error.

[0003] In the existing technology, commonly used valves have welded bushings, bases and stems. The entire valve body has too much welding, which can easily cause deformation of the welded parts and increase the valve's dimensional error. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the defect that the exhaust valve assembly has too many welding points in the prior art, which easily leads to deformation of the welded parts.

[0005] To solve the above-mentioned technical problems, this utility model provides a valve that reduces the amount of welding, comprising:

[0006] The support part includes a valve body and a fixing seat, and the two sides of the fixing seat are connected to the valve body by rivets;

[0007] The sealing part includes a valve stem, a valve plate, a first bushing, a first bushing, a second bushing, and a second bushing. The valve stem is disposed through the valve body along the radial direction of the valve body, and one end of the valve stem passes through the fixed seat. The first bushing and the second bushing are both disposed through the side wall of the valve body, with the first bushing located closer to the fixed seat. The first bushing and the second bushing are both disposed between the valve body and the valve stem. The first bushing and the second bushing are disposed on the outside of the valve body, respectively sleeved on the outside of the first bushing and the second bushing, and are threadedly connected to the first bushing and the second bushing, respectively. The valve plate is disposed inside the valve body, and the valve plate is detachably connected to the valve stem.

[0008] In one embodiment of this utility model, both the first bushing and the second bushing are provided with sealing rings inside, and the sealing rings are sleeved on the outside of the valve stem.

[0009] In one embodiment of the present invention, a first gasket is provided between the first bushing and the valve body, and the first gasket is sleeved on the outside of the first bushing; a second gasket is provided between the second bushing and the valve body, and the second gasket is sleeved on the outside of the second bushing.

[0010] In one embodiment of this utility model, a first locking platform is provided at one end of the first bushing, and a second locking platform is provided at one end of the second bushing. Both the first locking platform and the second locking platform abut against the inner wall of the valve body.

[0011] In one embodiment of the present invention, the outer edge of the valve plate is covered with a sealing strip, and fixing plates are provided on both sides of the valve plate, with the sealing strip pressed between the fixing plates and the valve plate.

[0012] In one embodiment of this utility model, the valve plate and the fixing plates on both sides are connected by rivets, and the fixing plates and the valve plate are connected to the valve stem by bolts.

[0013] In one embodiment of this utility model, a handle is sleeved on one end of the valve stem near the fixed seat, and a scale is provided on the surface of the handle.

[0014] In one embodiment of this utility model, the handle surface is provided with an adjustment hole, and a wing nut is provided on the fixing seat, with the wing nut passing through the adjustment hole.

[0015] In one embodiment of this utility model, a sector-shaped toothed disc is sleeved on the valve stem, and a positioning pin is provided on one side of the fixed seat to adjust the positioning pin to abut against the sector-shaped toothed disc.

[0016] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0017] The valve described in this utility model reduces the amount of welding. First, the mounting base is riveted to the valve body, and second, the bushing and valve stem are threaded to the valve body. This eliminates the need for welding the mounting base, bushing, and valve stem, thereby reducing the amount of welding and thus reducing deformation caused by welding and lowering errors. Attached Figure Description

[0018] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0021] Figure 3 for Figure 2 A schematic diagram of the local structure at point A in the middle;

[0022] Figure 4 for Figure 2 A schematic diagram of the local structure at point B;

[0023] Figure 5 for Figure 1 Schematic diagram of the central support section;

[0024] Figure 6 for Figure 1 Schematic diagram of the middle sealing part;

[0025] Explanation of reference numerals in the accompanying drawings: 1. Support; 2. Sealing part; 11. Valve body; 12. Fixing seat; 13. Handle; 14. Butterfly nut; 15. Sector gear; 16. Locating pin; 17. Flange; 21. Valve stem; 22. First bushing; 23. First bushing; 24. Second bushing; 25. Second bushing; 26. Valve plate; 27. Sealing ring; 111. Flanged edge; 112. Connecting hole; 131. Dial; 132. Adjusting hole; 221. First gasket; 231. First locking plate; 241. Second gasket; 251. Second locking plate; 261. Fixing plate; 262. Sealing strip. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0027] Reference Figures 1-6 As shown, this utility model discloses a valve that reduces the amount of welding, comprising:

[0028] Support part 1, the support part 1 includes valve body 11 and fixing seat 12, the two sides of the fixing seat 12 are connected to the valve body 11 by rivets;

[0029] The sealing part 2 includes a valve stem 21, a valve plate 26, a first bushing 22, a first bushing 23, a second bushing 24, and a second bushing 25. The valve stem 21 is disposed through the valve body 11 along the radial direction, and one end of the valve stem 21 passes through the fixed seat 12. The first bushing 23 and the second bushing 25 are both disposed through the side wall of the valve body 11, with the first bushing 23 located near the fixed seat 12. The first bushing 23 and the second bushing 25 are both disposed between the valve body 11 and the valve stem 21. The first bushing 22 and the second bushing 24 are disposed on the outside of the valve body 11, respectively sleeved on the outside of the first bushing 23 and the second bushing 25, and the first bushing 22 and the second bushing 24 are threadedly connected to the first bushing 23 and the second bushing 25, respectively. The valve plate 26 is disposed inside the valve body 11, and the valve plate 26 is detachably connected to the valve stem 21.

[0030] In this invention, the fixing seat 12 is fixed to the surface of the valve body 11 with rivets, eliminating the need for welding and preventing deformation caused by welding of the valve body 11. The fixing seat 12 is used to fix the valve stem 21 and other components such as the handle. The valve stem 21 extends through the entire valve body 11, and a connecting hole 112 is provided on the surface of the valve body 11 to mate with the valve stem 21. In this invention, the first bushing 23 and the second bushing 25 pass through the connecting hole 112 from inside the valve body 11, and are fitted onto the outside of the valve stem 21. Then, the first bushing 22 and the second bushing 24 are fitted onto the outside of the first bushing 23 and the second bushing 25, and are threadedly connected to the first bushing 23 and the second bushing 25, respectively. It should be noted that the second bushing 24 in this invention is a cover structure, which is fastened to the outside of the second bushing 25, and the threaded connection between the second bushing 24 and the second bushing 25 fixes one end of the valve stem 21. Furthermore, the first bushing 22 and the second bushing 24 fix the first bushing 23 and the second bushing 25 to the connecting hole 112 of the valve body 11. The threaded connection can ensure the sealing of the connection without welding. The valve plate 26 is located inside the valve body 11 and is detachably connected to the valve stem 21. Rotating the valve stem 21 will cause the valve plate 26 to open and close.

[0031] In this invention, the mounting base and valve body 11 are riveted together, and the bushing and valve stem 21 are threaded together with the valve body 11. This eliminates the need for welding of the mounting base, bushing and valve stem 21, reduces the amount of welding, thereby reducing deformation caused by welding and reducing errors.

[0032] Furthermore, both the first bushing 22 and the second bushing 24 are provided with sealing rings 27, which are sleeved on the outside of the valve stem 21.

[0033] Specifically, the sealing ring 27 is disposed inside the first bushing 22 and the second bushing 24. During the connection process between the bushing and the bushing, the sealing ring 27 is pressed between the bushing and the bushing to ensure the sealing of the connection.

[0034] Furthermore, a first locking platform 231 is provided at one end of the first bushing 23, and a second locking platform 251 is provided at one end of the second bushing 25. Both the first locking platform 231 and the second locking platform 251 abut against the inner wall of the valve body 11.

[0035] Specifically, in the actual assembly process, the first bushing 23 and the second bushing 25 are installed from inside the valve body 11. During the installation process, the first bushing 23 and the second bushing 25 are pulled out by the first bushing 22 and the second bushing 24, so that the first retaining plate 231 and the second retaining plate 251 abut against the inner wall of the valve body 11.

[0036] Furthermore, a first gasket 221 is provided between the first bushing 22 and the valve body 11, and the first gasket 221 is sleeved on the outside of the first bushing 23; a second gasket 241 is provided between the second bushing 24 and the valve body 11, and the second gasket 241 is sleeved on the outside of the second bushing 25.

[0037] Specifically, the first gasket 221 and the second gasket 241 are respectively disposed between the first bushing 22 and the second bushing 24 and the valve body 11, for sealing the space between the first bushing 22 and the second bushing 24 and the valve body 11. As a preferred embodiment of this utility model, the first gasket 221 and the second gasket 241 are made of PTFE material, which has strong corrosion resistance and aging resistance, and a long service life.

[0038] Furthermore, the outer edge of the valve plate 26 is covered with a sealing strip 262, and fixing plates 261 are provided on both sides of the valve plate 26. The sealing strip 262 is pressed between the fixing plates 261 and the valve plate 26. The valve plate 26 and the fixing plates 261 on both sides are connected by rivets, and the fixing plates 261 and the valve plate 26 are connected to the valve stem 21 by bolts.

[0039] Specifically, in the actual assembly process, the sealing strip 262 is first wrapped around the valve plate 26, and then two fixing plates 261 are clamped on both sides of the valve plate 26. The three plates are fixedly connected by rivets. Finally, the whole assembly is connected to the valve stem 21 by bolts.

[0040] Furthermore, a handle 13 is fitted onto one end of the valve stem 21 near the fixed base 12, and a scale 131 is provided on the surface of the handle 13.

[0041] As a preferred embodiment of this utility model, the end of the design near the fixed base 12 is square-headed, and the handle 13 is sleeved on the valve stem 21 for adjusting the opening degree of the valve plate 26. Simultaneously, during the adjustment of the opening degree, the size of the opening can be controlled by observing the scale 131.

[0042] Furthermore, the handle 13 has an adjustment hole 132 on its surface, and a wing nut 14 is provided on the fixing seat 12, with the wing nut 14 passing through the adjustment hole 132.

[0043] Specifically, adjust the wing nut 14 to lock it with the handle 13, so as to prevent the handle 13 from being accidentally touched after adjustment, which would cause the opening degree to change.

[0044] Furthermore, a sector-shaped toothed disc 15 is sleeved on the valve stem 21, and a positioning pin 16 is provided on one side of the fixed seat 12 to adjust the positioning pin 16 to abut against the sector-shaped toothed disc 15.

[0045] Specifically, the sector-shaped gear 15 rotates synchronously with the valve stem 21. After adjusting the opening of the valve plate 26, the adjusting positioning pin 16 abuts against the sector-shaped gear 15 to lock the sector-shaped gear 15, further improving the stability of the handle 13 after adjustment.

[0046] In addition, flanges 17 are fitted at both ends of the valve body 11 in this utility model. In the actual assembly process, the flanges 17 are first fitted at both ends of the valve body 11, and then the two ends of the valve body 11 are flanged 111.

[0047] In summary, this utility model introduces a valve that reduces the amount of welding. Firstly, by riveting the mounting base to the valve body 11, and secondly by threading the bushing and valve stem 21 to the valve body 11, the welding of the mounting base, bushing, and valve stem 21 is eliminated, reducing the amount of welding and thus reducing deformation and errors caused by welding. Furthermore, the sealing performance of the entire valve body 11 can still be guaranteed without welding.

[0048] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A valve that reduces the amount of welding, characterized in that, include: The support part includes a valve body and a fixing seat, and the two sides of the fixing seat are connected to the valve body by rivets; The sealing part includes a valve stem, a valve plate, a first bushing, a first bushing, a second bushing, and a second bushing. The valve stem is disposed through the valve body along the radial direction of the valve body, and one end of the valve stem passes through the fixed seat. The first bushing and the second bushing are both disposed through the side wall of the valve body, with the first bushing located closer to the fixed seat. The first bushing and the second bushing are both disposed between the valve body and the valve stem. The first bushing and the second bushing are disposed on the outside of the valve body, respectively sleeved on the outside of the first bushing and the second bushing, and are threadedly connected to the first bushing and the second bushing, respectively. The valve plate is disposed inside the valve body, and the valve plate is detachably connected to the valve stem.

2. The valve for reducing welding quantity according to claim 1, characterized in that: Both the first and second bushings are provided with sealing rings inside, and the sealing rings are fitted on the outside of the valve stem.

3. The valve for reducing welding quantity according to claim 1, characterized in that: A first gasket is provided between the first bushing and the valve body, and the first gasket is sleeved on the outside of the first bushing; a second gasket is provided between the second bushing and the valve body, and the second gasket is sleeved on the outside of the second bushing.

4. The valve for reducing welding quantity according to claim 1, characterized in that: The first bushing has a first locking platform at one end, and the second bushing has a second locking platform at one end. Both the first locking platform and the second locking platform abut against the inner wall of the valve body.

5. The valve for reducing welding quantity according to claim 1, characterized in that: The outer edge of the valve plate is covered with a sealing strip, and fixing plates are provided on both sides of the valve plate. The sealing strip is pressed between the fixing plates and the valve plate.

6. The valve for reducing welding quantity according to claim 5, characterized in that: The valve plate and the fixing plates on both sides are connected by rivets, and the fixing plates and the valve plate are connected to the valve stem by bolts.

7. The valve for reducing welding quantity according to claim 1, characterized in that: A handle is fitted onto one end of the valve stem near the fixed base, and a scale is provided on the surface of the handle.

8. The valve for reducing welding quantity according to claim 7, characterized in that: The handle surface is provided with an adjustment hole, and a wing nut is provided on the fixing seat, with the wing nut passing through the adjustment hole.

9. The valve for reducing welding quantity according to claim 1, characterized in that: A sector-shaped toothed disc is fitted onto the valve stem, and a positioning pin is inserted through one side of the fixed seat. The positioning pin is adjusted to abut against the sector-shaped toothed disc.

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