CN220168631U - High-performance floating type soft sealing ball valve - Google Patents
High-performance floating type soft sealing ball valve Download PDFInfo
- Publication number
- CN220168631U CN220168631U CN202321580267.3U CN202321580267U CN220168631U CN 220168631 U CN220168631 U CN 220168631U CN 202321580267 U CN202321580267 U CN 202321580267U CN 220168631 U CN220168631 U CN 220168631U
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- valve body
- valve
- ball
- sealing
- annular step
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- 238000007789 sealing Methods 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 claims abstract description 4
- 239000002245 particle Substances 0.000 abstract description 5
- 239000004033 plastic Substances 0.000 abstract description 4
- 238000005299 abrasion Methods 0.000 abstract description 2
- 238000009825 accumulation Methods 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
Abstract
The utility model relates to a high-performance floating type soft sealing ball valve, which comprises a valve body, a valve seat, a ball body and a valve rod, wherein the valve body consists of a left valve body, a right valve body and a middle valve body; the method is characterized in that: the ball support ring is arranged in the valve cavity and is provided with a spherical inner cavity in dynamic seal fit with the surface of the ball, the end faces of two sides are installed in the middle valve body in a pressed mode through the left valve body and the right valve body, and the outer circular face is in dynamic seal fit with the inner wall of the through hole of the middle valve body. The ball body is prevented from being pressed on the sealing surface below the valve seat, so that the non-plastic deformation of the valve seat is avoided, and the sealing specific pressure of the upper and lower positions of the sealing pair is not consistent; meanwhile, the accumulation of media in the valve cavity is prevented, particles are brought into the sealing pair when the ball rotates, abrasion is generated on the sealing surface of the valve seat, and the service life is influenced. Has the advantages of reliable sealing performance, long service life and the like.
Description
Technical Field
The utility model belongs to the field of valves, and particularly relates to a floating ball valve.
Background
The floating type soft sealing ball valve is generally composed of a valve body, a valve seat, a ball body, a valve rod and a transmission mechanism, wherein the ball body adopts a floating type structure, the upper end of the ball body is in transmission connection with the transmission mechanism through the valve rod, and the valve seat is arranged in an inlet and outlet channel of the valve body by adopting a soft sealing structure to form a soft sealing pair with the ball body. The main disadvantages are: the ball gravity is supported by the valve seat, so that the valve seat of the soft sealing material is pressed for a long time to easily generate non-plastic deformation, the sealing specific pressure above the sealing pair is lower than the sealing specific pressure below the sealing pair, and the sealing performance is affected; when the ball body is closed and rotated, medium particles are easy to bring into the sealing surface of the valve seat, so that the sealing surface of the valve seat is worn, and the service life of a product is influenced.
Disclosure of Invention
The utility model aims at overcoming the defects existing in the prior art, and provides the high-performance floating type soft sealing ball valve which can prevent the soft sealing valve seat from being deformed under pressure, keep the sealing specific pressure of the sealing pair in the circumferential direction uniform, has reliable sealing performance, can prevent medium particles from entering the sealing surface of the valve seat, and has long service life.
The technical scheme of the utility model is as follows:
the high-performance floating type soft sealing ball valve comprises a valve body, a valve seat, a ball body and a valve rod, wherein the valve body consists of a left valve body, a right valve body and a middle valve body; the method is characterized in that: a ball supporting ring is arranged in the valve cavity, the ball supporting ring is provided with a spherical inner cavity in dynamic sealing fit with the surface of the ball, the end surfaces of two sides are installed in the middle valve body in a pressing mode through the left valve body and the right valve body, and the outer circular surface is in dynamic sealing fit with the inner wall of the through hole of the middle valve body; the ball body supporting ring is formed by splicing two split rings on the upper and lower sides of the central line of the valve body, and the center of the split ring is provided with a radial positioning hole which is movably matched with the outer circular surface of the radial shoulder of the valve rod.
Preferably, the spherical inner cavity wall of the spherical supporting ring is uniformly provided with a plurality of axial grooves.
Preferably, the middle valve body is fixedly arranged between the opposite end surfaces of the left valve body and the right valve body by adopting a screw and a nut, radial annular steps are respectively arranged in the end surfaces of the two sides of the through hole of the middle valve body, a first annular step and a second annular step are respectively arranged in the opposite end surfaces of the left valve body and the right valve body, the first annular step is matched with the radial annular step of the middle valve body, an elastic sealing gasket is arranged between the first annular step and the radial annular step of the middle valve body, and a gap is reserved between the second annular step and the end surfaces of the two sides of the middle valve body.
Compared with the prior art, the utility model has the beneficial effects that: the ball supporting ring is arranged in the valve cavity, so that the problem that the sealing specific pressure of the upper and lower positions of the sealing pair is inconsistent due to non-plastic deformation of the valve seat caused by the fact that the ball is pressed on the sealing surface below the valve seat is avoided; meanwhile, the accumulation of media in the valve cavity is prevented, particles are brought into the sealing pair when the ball rotates, abrasion is generated on the sealing surface of the valve seat, and the service life is influenced. Has the advantages of reliable sealing performance, long service life and the like.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
In the figure: the valve comprises a left valve body 1, a right valve body 2, a ball body 3, a valve seat 4, a valve rod 5, a packing 6, a gland 7, a handle 8, an elastic sealing gasket 9, a ball body supporting ring 10 and a valve body 11.
Description of the embodiments
The high-performance floating type soft sealing ball valve disclosed in fig. 1 comprises a valve body, a valve seat 4, a ball body 3 and a valve rod 5, wherein the valve body consists of a left valve body 1, a right valve body 2 and a middle valve body 11, the valve seat 4 adopts a soft sealing structure and consists of rubber plastic materials, the valve seat 4 is respectively arranged in a channel of the left valve body 1 and a channel of the right valve body 2, the ball body 3 is arranged in a valve cavity in a floating manner, the upper end of the ball body 3 is connected with a hand wheel 8 through the valve rod 5, a filler 6 is arranged between the valve rod and the middle valve body 11, and the filler 6 is arranged in a shaft hole of the middle valve body 11 in a pressing manner by a pressing cover 7; the method is characterized in that: a ball supporting ring 10 is arranged in the valve cavity, the ball supporting ring 10 is provided with a spherical inner cavity in dynamic seal fit with the surface of the ball 3, the end surfaces at two sides are installed in the middle valve body 11 by the left valve body 1 and the right valve body 2 in a pressing way, the outer circular surface is in dynamic seal fit with the inner wall of a through hole of the middle valve body 11, the ball 3 is supported, the problem that the gravity of the ball 3 presses the sealing surface below the valve seat 4 to deform the valve seat 4, the sealing specific pressure of the upper and lower positions of the sealing pair is inconsistent, and meanwhile, the accumulated medium particles in the valve cavity are prevented from being brought into the sealing pair along with the rotation of the ball 3 to abrade the sealing surface of the valve seat 4 is avoided; the ball support ring 10 is formed by splicing two split rings on the central line of a valve body channel, so that the ball 3 is conveniently installed, a radial positioning hole which is movably matched with the outer circular surface of the radial shoulder of the valve rod 5 is formed in the center of the split ring, the valve rod 5 can penetrate through the radial positioning hole to be connected with the ball 3, and meanwhile, the radial positioning hole is matched with the outer circular surface of the radial shoulder of the valve rod 5, the upper split ring is positioned, and the ball support ring 10 is prevented from rotating in the through hole of the middle valve body 11.
The spherical inner cavity wall of the spherical supporting ring 10 is uniformly provided with a plurality of axial grooves, the axial grooves are grooves formed in the spherical inner cavity wall along the axial direction of the valve body, the contact area between the surface of the spherical body 3 and the spherical inner cavity of the spherical supporting ring 10 can be reduced, the rotation friction force of the spherical body 3 is reduced, and meanwhile, media can be dredged and flow from the axial grooves, so that the sealing surfaces of the spherical body 3 and the valve seat 4 are prevented from being accumulated and worn.
The middle valve body 11 is fixedly arranged between the opposite end surfaces of the left valve body 1 and the right valve body 2 by adopting a screw and a nut, so that the valve body is compact in structure and small in volume, radial annular steps of communication through holes are arranged in the end surfaces of the two sides of the middle valve body 11, a first annular step and a second annular step are respectively arranged in the opposite end surfaces of the left valve body 1 and the right valve body 2, the first annular step is matched with the radial annular steps of the middle valve body 11, an elastic sealing gasket is arranged between the first annular step and the radial annular steps, the sealing of the left valve body 1 and the right valve body 2 and the middle valve body 11 is ensured, the end surfaces of the left valve body 1 and the right valve body 2 are in pressing contact with the end surfaces of the ball supporting ring 10, a gap is reserved between the second annular step and the end surfaces of the two sides of the middle valve body 11, and the pressing sealing force of the elastic sealing gasket between the first annular step and the radial annular steps is ensured.
Claims (3)
1. The high-performance floating type soft sealing ball valve comprises a valve body, a valve seat (4), a ball body (3) and a valve rod (5), wherein the valve body consists of a left valve body (1), a right valve body (2) and a middle valve body (11), the valve seat (4) adopts a soft sealing structure, the valve seat is respectively arranged in a channel of the left valve body (1) and a channel of the right valve body (2), the ball body (3) is arranged in the valve cavity in a floating manner, and the upper end of the ball body is connected with a hand wheel (8) through the valve rod (5); the method is characterized in that: a ball supporting ring (10) is arranged in the valve cavity, the ball supporting ring (10) is provided with a spherical inner cavity in dynamic seal fit with the surface of the ball (3), the end surfaces of two sides are tightly pressed and installed in a through hole of the middle valve body (11) by the left valve body (1) and the right valve body (2), and the outer circular surface is in dynamic seal fit with the inner wall of the through hole of the middle valve body (11); the ball body supporting ring (10) is formed by splicing two split rings on the upper and lower sides of the central line of the valve body channel, and the center of the split ring is provided with a radial positioning hole which is movably matched with the outer circular surface of the radial shoulder of the valve rod (5).
2. The high performance floating soft seal ball valve of claim 1, wherein: the spherical inner cavity wall of the spherical supporting ring (10) is uniformly provided with a plurality of axial grooves.
3. The high performance floating soft seal ball valve of claim 1 or 2, characterized by: the middle valve body (11) is fixedly arranged between opposite end surfaces of the left valve body (1) and the right valve body (2) by adopting a screw and a nut, radial annular steps are arranged on two side end surfaces of the middle valve body (11) and on the side of a through hole, a first annular step and a second annular step are respectively arranged in opposite end surfaces of the left valve body (1) and the right valve body (2), the first annular step is matched with the radial annular step of the middle valve body (11), an elastic sealing gasket is arranged between the first annular step and the radial annular step, and a gap is reserved between the second annular step and the two side end surfaces of the middle valve body (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321580267.3U CN220168631U (en) | 2023-06-20 | 2023-06-20 | High-performance floating type soft sealing ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321580267.3U CN220168631U (en) | 2023-06-20 | 2023-06-20 | High-performance floating type soft sealing ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220168631U true CN220168631U (en) | 2023-12-12 |
Family
ID=89057449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321580267.3U Active CN220168631U (en) | 2023-06-20 | 2023-06-20 | High-performance floating type soft sealing ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220168631U (en) |
-
2023
- 2023-06-20 CN CN202321580267.3U patent/CN220168631U/en active Active
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