CN118149122A - Ultra-high vacuum ball valve - Google Patents
Ultra-high vacuum ball valve Download PDFInfo
- Publication number
- CN118149122A CN118149122A CN202410417984.7A CN202410417984A CN118149122A CN 118149122 A CN118149122 A CN 118149122A CN 202410417984 A CN202410417984 A CN 202410417984A CN 118149122 A CN118149122 A CN 118149122A
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- ball valve
- ball
- valve body
- handle
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- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 26
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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Abstract
The invention discloses an ultra-high vacuum ball valve, which comprises: the vacuum ball valve comprises a ball valve body; the ball body is rotatably arranged in the ball valve body, a channel is arranged on the ball body in a penetrating way, a plane is arranged on the part of the ball body, which is positioned on two sides of the channel, and a limiting chute is arranged at the top of the ball body; the bottom of the middle shaft is detachably inserted into the limit chute of the ball body, and the top of the middle shaft extends out of the ball valve body and is connected with the handle; the upper cover is arranged outside one end of the ball valve body, which extends out of the center shaft, and is detachably connected with the handle mounting end of the ball valve body; the invention adopts chute type positioning cooperation in the connection of the upper cover and the handle, can effectively limit the handle at a completely opened or closed position, and can pass through ultrahigh vacuum leak detection conditions.
Description
Technical Field
The invention relates to the technical field of valves, in particular to an ultrahigh vacuum ball valve.
Background
The vacuum ball valve is widely used in petroleum, chemical industry, mine, construction, instrument and meter manufacturing industry, has good performance of being not easy to leak and being capable of accurately controlling flow.
The general ball valve has the working principle that a ball body with a circular channel vertically rotates around the axis of the channel, and the ball body rotates along with a valve rod so as to achieve the functions of opening and closing the channel; the ball valve can be closed to stop the flow of medium by rotating 90 degrees and very small rotating moment, when the ball valve rotates 90 degrees, the ball valve should be completely spherical at the inlet and outlet so as to close the valve, and the medium can be fluid or gas, when the ball valve rotates 90 degrees, the ball valve should be completely spherical at the inlet and outlet so as to open the flow.
From the structure, the ball valve seat is embedded on the valve body side valve seat during sealing, and the relative movement parts are made of self-lubricating materials with extremely small friction coefficient, so that the operation torque is small, and in addition, the sealing grease is sealed for a long time, so that the operation is more flexible; the ball valve is generally used for two-position adjustment, the flow characteristic is quick opening, and the design of a general ball valve sealing ring is easy to cause overturning or creeping after being opened and closed for many times, so that the ball valve deviates from the original fixed position, is easy to cause sealing failure, cannot meet the use requirement, and cannot be used in a high vacuum environment.
Disclosure of Invention
In order to solve the technical problems, the technical scheme provided by the invention is as follows: an ultra-high vacuum ball valve comprising: the vacuum ball valve comprises a ball valve body, wherein the ball valve body comprises an exhaust end, an air inlet end and a handle mounting end; the ball body is rotatably arranged in the ball valve body, a channel corresponding to the exhaust end and the air inlet end of the ball valve body is penetrated through the ball body, a plane is arranged on the part of the ball body, which is positioned on two sides of the channel, and a limiting chute is arranged at the top of the ball body; the bottom of the middle shaft is detachably inserted into the limit chute of the ball body, and the top of the middle shaft extends out of the ball valve body and is connected with the handle; the upper cover is arranged outside one end of the ball valve body, which extends out of the center shaft, and is detachably connected with the handle mounting end of the ball valve body, one side of the upper cover is provided with a limiting sliding hole in a penetrating manner, and the handle penetrates out of the limiting sliding hole.
Further, the exhaust end and the air inlet end of the ball valve body are respectively provided with a ball seat, a sealing ring in contact with the outside of the ball body is arranged between the ball seat and the ball body, and a sealing ring framework is wrapped in the sealing ring.
Further, one surface of the sealing ring, which is contacted with the ball body, is a step-shaped contact surface.
Further, the upper surface and the lower surface of the middle part of the limiting slide hole are provided with long convex strips in a protruding mode, so that positioning holes are formed at two ends of the limiting slide hole.
Further, the bottom of the upper cover is tightly provided with a disc spring and a V-shaped shaft seal, and the disc spring and the V-shaped shaft seal are arranged between the inner wall of the mounting end of the handle and the outer wall of the center shaft.
Compared with the prior art, the invention has the advantages that: (1) The invention improves the ball body, and the flat sections are added on the two sides of the ball body, so that the friction force between the ball body of the vacuum ball valve and the valve seat is greatly reduced when the ball body is opened and closed, and a user can open or close the ball valve conveniently on site without consuming a lot of force;
(2) The invention improves the upper cover, adopts chute type positioning fit in the connection of the upper cover and the handle, and can effectively limit the handle at a fully opened or closed position so that the handle can pass through an ultrahigh vacuum leak detection condition;
(3) The disc-shaped spring and the V-shaped shaft seal are additionally arranged on the middle shaft, so that the lower pressure of the shaft seal can be increased, the upper cover is pressed tightly, and the tightness is kept;
(4) The sealing ring with the stepped contact surface is additionally arranged between the ball seat and the ball body, so that the sealing function is not reduced after the ball seat and the ball body are opened and closed for many times, and the application of the ultra-high vacuum environment is realized.
Drawings
Fig. 1 is a schematic diagram of a split structure of an ultra-high vacuum ball valve of the present invention.
Fig. 2 is a schematic view of the external structure of an ultra-high vacuum ball valve according to the present invention.
Fig. 3 is a schematic view of the internal cross-section structure of an ultra-high vacuum ball valve of the present invention.
Fig. 4 is a schematic structural view of a ball valve body in an ultra-high vacuum ball valve according to the present invention.
Fig. 5 is a schematic structural view of a ball in an ultra-high vacuum ball valve according to the present invention.
Fig. 6 is a schematic structural view of an upper cover of an ultra-high vacuum ball valve according to the present invention.
Fig. 7 is a schematic structural view of a seal ring in an ultra-high vacuum ball valve according to the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
In the description of the embodiments of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship in which the product of the present invention is conventionally put when used, it is merely for convenience of describing the present invention and simplifying the description, and it does not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," "overhang" and the like, if any, do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the embodiments of the present invention, "plurality" means at least 2.
In the description of the embodiments of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Examples:
1-7, this embodiment discloses an ultra-high vacuum ball valve, includes: the vacuum ball valve comprises a ball valve body 1, wherein the ball valve body 1 comprises an exhaust end 2, an air inlet end 3 and a handle 7 mounting end 4; the ball body 5 is rotatably arranged in the ball valve body 1, a channel 501 corresponding to the exhaust end 2 and the air inlet end 3 of the ball valve body 1 is penetrated through the ball body 5, a plane 502 is arranged on the part of the ball body 5 positioned at two sides of the channel 501, and a limit chute 503 is arranged at the top of the ball body 5;
the ball body of the common ball valve is of a full-round design, so that the friction force is very large, the ball valve is very laborious to open or close, and meanwhile, the possibility of failure of the sealing ring is greatly increased; by adopting the structure, the flat tangential surfaces are arranged on the two sides of the sphere, so that the contact area during rotation can be reduced, friction is time-saving and labor-saving, the operation is convenient, and the service life is prolonged;
The bottom of the middle shaft 6 is detachably inserted into the limit chute 503 of the ball 5, and the top of the middle shaft 6 extends out of the ball valve body 1 and is connected with the handle 7; the upper cover 8 is arranged outside one end of the middle shaft 6 extending out of the ball valve body 1 and is detachably connected with the mounting end 4 of the handle 7 of the ball valve body 1, one side of the upper cover 8 is provided with a limiting sliding hole 801 in a penetrating manner, and the handle 7 penetrates out of the limiting sliding hole 801; long convex strips 802 are arranged on the upper surface and the lower surface of the middle part of the limiting sliding hole 801 in a protruding mode, and positioning holes 803 are formed at two ends of the limiting sliding hole 801. The bottom of the upper cover 8 is tightly provided with a disc spring 10 and a V-shaped shaft seal 11, and the disc spring 10 and the V-shaped shaft seal 11 are arranged between the inner wall of the mounting end 4 of the handle 7 and the outer wall of the center shaft 6;
The common ball valve center shaft seal only takes a rubber sealing ring or a teflon sheet as a seal, and cannot meet the requirement of high vacuum seal, so that the ball valve center shaft seal cannot be used in a high vacuum environment; after the structure is adopted, the lower pressure of the shaft seal is increased by additionally arranging the disc spring, so that the shaft seal can maintain a certain lower pressure to keep tightness when a new product is used for a long time, and meanwhile, the V-shaped shaft seal upper cover is pressed downwards to force the shaft seal to expand so as to achieve the sealing effect;
On the other hand, the handle adopts a sliding groove type positioning fit, when the ball body is rotated, the handle is pulled out and separated from the compression spring at the moment to rotate in a limiting way through the sliding groove, when the ball body is rotated to the positioning holes at the two ends of the limiting sliding hole, the handle is separated from the long convex strips to enter the positioning holes, the spring is reset to position the handle in the positioning holes, and the ball valve is not limited in the limiting design, so that the handle cannot be limited in a completely opened or closed position;
The exhaust end 2 and the air inlet end 3 of the ball valve body 1 are respectively provided with a ball seat 12, a sealing ring 9 which is in contact with the outside of the ball 5 is arranged between the ball seat 12 and the ball 5, and a sealing ring framework 901 is wrapped in the sealing ring 9; the surface of the seal ring 9 contacting the ball 5 is a stepped contact surface 902.
The sealing ring with a circular section or a trapezoid section is generally only used, the high vacuum requirement cannot be effectively met, and the sealing ring with the traditional design is easy to turn over or creep in the opening or closing process of the ball valve, so that the sealing function is invalid; after adopting above-mentioned structure, this embodiment is through setting up echelonment contact surface, increases sealed dotted line contact and reaches high leakproofness in order to be favorable to the high vacuum environment, simultaneously, the spheroid is gaseous if the dust produces and piles up when long-term use and can strike off the dust, and the parcel is provided with the skeleton in the sealing washer in addition, wraps up design sealing washer skeleton and increases intensity, avoids the sealing washer to warp and flex when the spheroid is actuated and increases leakproofness and sealing washer intensity when long-term needs the repeated switch to use.
The invention and its embodiments have been described above with no limitation, and the actual construction is not limited to the embodiments of the invention as shown in the drawings. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present invention.
Claims (5)
1. An ultra-high vacuum ball valve, comprising: the vacuum ball valve comprises a ball valve body, wherein the ball valve body comprises an exhaust end, an air inlet end and a handle mounting end; the ball body is rotatably arranged in the ball valve body, a channel corresponding to the exhaust end and the air inlet end of the ball valve body is penetrated through the ball body, a plane is arranged on the part of the ball body, which is positioned on two sides of the channel, and a limiting chute is arranged at the top of the ball body; the bottom of the middle shaft is detachably inserted into the limit chute of the ball body, and the top of the middle shaft extends out of the ball valve body and is connected with the handle; the upper cover is arranged outside one end of the ball valve body, which extends out of the center shaft, and is detachably connected with the handle mounting end of the ball valve body, one side of the upper cover is provided with a limiting sliding hole in a penetrating manner, and the handle penetrates out of the limiting sliding hole.
2. The ultra-high vacuum ball valve according to claim 1, wherein the ball valve body is provided with ball seats at the exhaust end and the air inlet end, a sealing ring contacting with the outside of the ball is arranged between the ball seats and the ball body, and a sealing ring framework is wrapped in the sealing ring.
3. The ultra-high vacuum ball valve according to claim 1, wherein the surface of said seal ring contacting said ball is a stepped contact surface.
4. The ultra-high vacuum ball valve according to claim 1, wherein long protruding strips are protruded on the upper surface and the lower surface of the middle part of the limiting sliding hole, so that positioning holes are formed at two ends of the limiting sliding hole.
5. The ultra-high vacuum ball valve according to claim 1, wherein a disc spring and a V-shaped shaft seal are arranged at the bottom of the upper cover in a pressing manner, and the disc spring and the V-shaped shaft seal are arranged between the inner wall of the mounting end of the handle and the outer wall of the middle shaft.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2023113482393 | 2023-10-18 | ||
| CN202311348239 | 2023-10-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118149122A true CN118149122A (en) | 2024-06-07 |
Family
ID=91296735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410417984.7A Pending CN118149122A (en) | 2023-10-18 | 2024-04-09 | Ultra-high vacuum ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118149122A (en) |
-
2024
- 2024-04-09 CN CN202410417984.7A patent/CN118149122A/en active Pending
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