CN211738086U - Full-bore top-mounted flat-bottom eccentric half-ball valve - Google Patents
Full-bore top-mounted flat-bottom eccentric half-ball valve Download PDFInfo
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- CN211738086U CN211738086U CN202020022033.7U CN202020022033U CN211738086U CN 211738086 U CN211738086 U CN 211738086U CN 202020022033 U CN202020022033 U CN 202020022033U CN 211738086 U CN211738086 U CN 211738086U
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- 238000007789 sealing Methods 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 4
- 238000012856 packing Methods 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 5
- 239000012535 impurity Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The utility model relates to a full-bore top-mounted flat-bottom eccentric half-ball valve, which comprises a valve body, a valve seat, a ball body, a valve rod, a valve cover and a transmission device, wherein the valve seat is arranged in an outlet channel of the valve body, the ball body adopts a half-ball body, and the ball body and the valve seat adopt a top-mounted structure; the method is characterized in that: the central line of the valve rod is vertical to the central line of the valve body channel and the central line of the valve cover, a spherical crown is fixedly installed on the hemisphere by a screw, and the spherical crown is provided with a sealing surface which is mutually matched with the valve seat; the bottom of the valve body adopts a flat-bottom inner cavity. The sealing device has the characteristics of small volume, low cost, small flow resistance, convenient maintenance, labor saving, reliable sealing performance and the like.
Description
Technical Field
The utility model belongs to the valve field especially relates to an eccentric hemisphere valve of upper assembling formula.
Background
The existing structure of the upper-mounted eccentric half ball valve generally comprises a valve body, a valve seat, a ball body, a valve rod, a valve cover and a transmission device, wherein the valve seat is installed in an outlet channel of the valve body, the ball body is a hemisphere and is provided with a sealing surface matched with the valve seat, the upper end of the ball body is connected with the lower end of the valve rod, the lower end of the ball body is installed at the bottom of an inner cavity of the valve body through a positioning shaft, the upper end of the valve rod penetrates through the valve cover to be connected with the transmission device. The disadvantages are that: the valve body adopts reducing, namely the diameter of a valve body channel is smaller than the inner diameter of a medium conveying pipeline, so that the flow resistance to the medium is larger; when the valve is maintained, the valve rod and the ball body are integrally taken out of the valve cover, and the valve rod and the ball body are arranged in the inner cavity of the valve body again after being repaired, so that the valve rod and the ball body of the valve with a larger caliber are heavy, hoisting equipment is needed to disassemble and assemble the valve rod and the ball body, the maintenance is troublesome, and the maintenance workload is large; the ball body rotates 90 degrees by taking the center line of the valve cover as an axis when being opened and closed, the circular arc inner cavity of the bottom of the valve cavity is the same as the spherical surface of the ball body, the size is large, medium impurities are easy to accumulate at the bottom of the valve cavity, and the lower end of the ball body is arranged at the bottom of the valve cavity through the positioning shaft, so that the impurities accumulated at the bottom of the valve cavity are difficult to wash out, the sealing surface is abraded, and the sealing performance.
Disclosure of Invention
The utility model discloses shortcoming to prior art exists provides a small, with low costs, dismouting easy maintenance, laborsaving, and the valve body inner chamber does not have the flat eccentric hemisphere valve of full latus rectum facial make-up formula of piling up, sealing performance is good.
The technical scheme of the utility model comprises a valve body, a valve seat, a ball body, a valve rod, a valve cover and a transmission device, wherein the valve seat is arranged in an outlet channel of the valve body, the ball body adopts a hemispheroid, the ball body and the valve seat adopt a top-loading structure, one end of the ball body is connected with one end of the valve rod, the other end of the ball body is arranged on the valve body through a positioning shaft, the other end of the valve rod is connected with the transmission device, and the valve; the method is characterized in that: the central line of the valve rod is vertical to the central line of the valve body channel and the central line of the valve cover, a spherical crown is fixedly installed on the hemisphere by a screw, and the spherical crown is provided with a sealing surface which is mutually matched with the valve seat; the bottom of the valve body adopts a flat-bottom inner cavity.
In the technical scheme, the valve seat is arranged on a radial step of an outlet channel of the valve body through a thrust ring, and the valve body channel adopts a full-bore structure.
In the technical scheme, the shaft sleeve, the anti-knock matching step and the packing sealing device are arranged between the valve rod and the valve body.
In the above technical scheme, the central line of the valve rod is positioned at the lower side of the intersection point of the central line of the valve body and the central line of the valve cover.
Compared with the prior art, the utility model beneficial effect be: the valve rod central line is vertical to the plane formed by the valve body central line and the valve cover central line and is arranged on the valve body, when the valve rod rotates anticlockwise to an opening position, the hemispheroid is positioned in the valve cavity below the valve cover, and the spherical crown and the valve seat can be taken out from the valve cover for online replacement; the bottom inner cavity of the valve body adopts a flat bottom structure, so that the volume of the valve body is reduced, and medium impurities are not easy to accumulate and deposit; the valve body channel adopts a full-bore structure; the sealing device has the characteristics of small volume, low cost, small flow resistance, convenient maintenance, labor saving, reliable sealing performance and the like.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is the schematic view of the mounting structure of the valve rod and the valve body of the present invention.
Detailed Description
The full-diameter top-mounted flat-bottom eccentric half-ball valve shown in fig. 1 comprises a valve body 1, a valve seat 3, a ball 5, a valve rod 9, a valve cover 7 and a transmission device 8, wherein the valve seat 3 is mounted in an outlet channel of the valve body, an O-shaped sealing ring 2 is mounted between the radial outer circular surface of the valve seat 3 and the inner wall of the channel of the valve body 1, the ball 5 adopts a hemispherical body, the ball 5 and the valve seat 3 adopt a top-mounted structure, the top-mounted structure means that the ball 5 and the valve seat 3 are mounted in a valve cavity from the position of the valve cover 7, one end of the ball 5 is connected with one end of the valve rod 9, the other end of the ball is mounted on the valve body 1 through a positioning shaft 14, the positioning shaft 14 is fixedly mounted on the valve body 1 through screw sealing, the ball 5 is in movable fit with the positioning shaft 14; the method is characterized in that: the central line of the valve rod 9 is perpendicular to the central line of the channel of the valve body 1 and the central line of the valve cover 7, namely the valve rod 9 is installed perpendicular to the plane direction of the view of fig. 1, the spherical crown 4 is fixedly installed on the hemisphere by screws, the spherical crown 4 has a sealing surface which is matched with the valve seat 3, when the valve rod 9 rotates by 90 degrees clockwise, the spherical crown 4 is in sealing fit with the valve seat 3, when the valve rod 9 rotates by 90 degrees counterclockwise, the spherical crown 4 rotates to the lower part of the valve cover 7, the valve is opened, and at this time, the valve cover 7 can be opened, the spherical crown 4 is detached from the sphere 5 for replacement, or the valve seat 3 is replaced; the bottom of the valve body 1 adopts a flat-bottom inner cavity, so that the problem that impurities are easily deposited in a spherical cavity at the bottom of the existing ball valve body is avoided.
The valve seat 3 is installed on the radial step of the outlet channel of the valve body 1 through the thrust ring 6, the valve seat 3 can be taken out from the valve cover 7 by taking down the thrust ring 6, the valve seat 3 is convenient to replace, the channel of the valve body 1 adopts a full-diameter structure, and the problems of flow resistance and circulation energy loss caused by diameter reduction of the channel of the valve body in the prior art are solved.
The central line of the valve rod 9 is positioned at the lower side of the intersection point of the central line of the valve body 1 and the central line of the valve cover 7, the central line of the valve rod 9 and the central line of a channel of the valve body 1 form an eccentric structure, the spherical crown 4 and the valve seat 3 generate wedging force when the valve is closed, the spherical crown 4 and the valve seat 3 generate quick separation effect when the valve is opened, and opening and closing friction between sealing surfaces is reduced.
A shaft sleeve 13, an anti-flying thrust collar 11 and a packing sealing device 10 are arranged between the valve rod 9 and the valve body 1, so that the rotating friction force of the valve rod 9 is reduced, and the valve rod 9 is prevented from being ejected from the valve body 1 by medium pressure, as shown in figure 2.
Claims (5)
1. A full-diameter top-mounted flat-bottom eccentric half-ball valve comprises a valve body (1), a valve seat (3), a ball body (5), a valve rod (9), a valve cover (7) and a transmission device (8), wherein the valve seat (3) is mounted in an outlet channel of the valve body (1), the ball body (5) is a hemisphere, the ball body (5) and the valve seat (3) are of a top-mounted structure, one end of the ball body (5) is connected with one end of the valve rod (9), the other end of the ball body is mounted on the valve body (1) through a positioning shaft (14), the other end of the valve rod (9) is connected with the transmission device (8), and the central line of the valve rod (9) is superposed; the method is characterized in that: the central line of the valve rod (9) is vertical to the central line of the channel of the valve body (1) and the central line of the valve cover (7), a spherical crown (4) is fixedly installed on the hemisphere by a screw, and the spherical crown (4) is provided with a sealing surface which is mutually matched with the valve seat (3); the bottom of the valve body (1) adopts a flat-bottom inner cavity.
2. The full-bore top-loading flat-bottom eccentric half-ball valve according to claim 1, wherein: the valve seat (3) is arranged on a radial step of an outlet channel of the valve body (1) through a thrust ring (6), and the channel of the valve body (1) adopts a full-diameter structure.
3. The full-bore top-loading flat-bottom eccentric half-ball valve according to claim 1 or 2, wherein: the central line of the valve rod (9) is positioned at the lower side of the intersection point of the central line of the valve body (1) and the central line of the valve cover (7).
4. The full-bore top-loading flat-bottom eccentric half-ball valve according to claim 1 or 2, wherein: a shaft sleeve (13), an anti-flying thrust collar (11) and a packing sealing device (10) are arranged between the valve rod (9) and the valve body (1).
5. The full-bore top-loading flat-bottom eccentric half-ball valve according to claim 3, wherein: a shaft sleeve (13), an anti-flying thrust collar (11) and a packing sealing device (10) are arranged between the valve rod (9) and the valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020022033.7U CN211738086U (en) | 2020-01-07 | 2020-01-07 | Full-bore top-mounted flat-bottom eccentric half-ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020022033.7U CN211738086U (en) | 2020-01-07 | 2020-01-07 | Full-bore top-mounted flat-bottom eccentric half-ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211738086U true CN211738086U (en) | 2020-10-23 |
Family
ID=72867640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020022033.7U Active CN211738086U (en) | 2020-01-07 | 2020-01-07 | Full-bore top-mounted flat-bottom eccentric half-ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211738086U (en) |
-
2020
- 2020-01-07 CN CN202020022033.7U patent/CN211738086U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 1/2, Building 7, Zone 15, Wanyang Zhongchuang City, Bihu Town, Liandu District, Lishui City, Zhejiang Province, 325102 Patentee after: XITIE VALVE TECHNOLOGY CO.,LTD. Country or region after: China Address before: 325102 Dongou Industrial Zone, Oubei street, Yongjia County, Wenzhou, Zhejiang Patentee before: XITIE VALVE TECHNOLOGY CO.,LTD. Country or region before: China |
|
| CP03 | Change of name, title or address |