CN203686216U - Zero-friction opening and closing ball valve - Google Patents
Zero-friction opening and closing ball valve Download PDFInfo
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- CN203686216U CN203686216U CN201320784597.4U CN201320784597U CN203686216U CN 203686216 U CN203686216 U CN 203686216U CN 201320784597 U CN201320784597 U CN 201320784597U CN 203686216 U CN203686216 U CN 203686216U
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Abstract
The utility model provides a zero friction opening and closing ball valve which comprises a valve body (1) provided with a cavity and a ball body (2) arranged in the cavity, and further comprises a first assistant valve body (3) fixed on the two sides of the valve body (1) and provided with a first air inlet cavity (31) and a second assistant valve body (4) provided with a second air inlet cavity (41), as well as a piston (5) capable of moving in the axial direction of the valve body (1) and arranged in a piston cavity (8), and a seal seat (6) fixedly connected with the piston (5) and in sealed contact with the ball body (2), wherein both of the first air inlet cavity (31) and the second air inlet cavity (41) are communicated with the piston cavity (8). The zero-friction opening and closing ball valve has the benefits that the condition that the opening and the closing of a sealing pair of the ball valve has no friction is realized, the operation torque is reduced, and the service life is prolonged; as the ball and seal rings are not in contact all the time in the opening process, the torque is reduced, and the service life of a pneumatic actuator is greatly prolonged.
Description
Technical field
The utility model belongs to ball valve correlative technology field, relates in particular to a kind of zero friction and opens and closes ball valve.
Background technique
At present, ball valve is to be widely used on the industrial pipelines such as plumbing, food, chemical industry as regulating and one of valve that throttling is used.Its working principle is: by rotatable handle, and rotation valve rod, and then drive spheroid rotation, reach the object of opening or closing.Due to pneumatic ball valve, in the moment of closing and opening, the sealing pair of valve can produce huge frictional force, can make sealing pair be damaged, if increase the gap of sealing pair, although can see frictional force, but the seal pressure of valve does not reach, tend to cause valve to reveal.And because ball surface is because being stained with other foreign material, easily damage sealing surface, cause seal failure.
Summary of the invention
Problem to be solved in the utility model is to provide a kind of zero friction and opens and closes ball valve, can make ball valve open and close without friction, has both reduced the moment of torsion that ball valve opens and closes, and extends the working life of ball valve.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of zero friction opens and closes ball valve, comprise the valve body with cavity, and be arranged on the spheroid in this cavity, also comprise the first auxiliary valve body that is provided with the first air-inlet cavity that is fixed on valve body both sides and the second auxiliary valve body that is provided with the second air-inlet cavity, piston cavity, move axially and be arranged on the piston in piston cavity along valve body, and being fixedly connected on the sealing seat contacting with ball seal on piston, described the first air-inlet cavity and the second air-inlet cavity are all communicated with piston cavity.
Further, described piston cavity is formed by the space between the first auxiliary valve body and the second auxiliary valve body.
Further, in the one side contacting of described the first auxiliary valve body, the second auxiliary valve body and piston, be equipped with seal ring.
Further, the diameter of described the first air-inlet cavity and the second air-inlet cavity upper end-hole is greater than the diameter of cavity below it.
Advantage and the good effect that the utlity model has are: adopted technique scheme, realized the secondary nothing friction of ball valve Open-close sealing completely, reduced operation moment of torsion, extended working life; Due to ball and seal ring opening process, do not contact all the time, moment of torsion reduces, and has also greatly extended the working life of pneumatic actuator.
Brief description of the drawings
Fig. 1 is the position view of the utility model in ball valve
Fig. 2 is the partial enlarged drawing at the I place of the utility model Fig. 1
Fig. 3 is the structural representation under the utility model non-tight state
In figure: 1-valve body; 2-spheroid; 3-the first auxiliary valve body; 4-the second auxiliary valve body; 5-piston; 6-sealing seat; 7-seal ring; 8-piston cavity; 31-the first air-inlet cavity; 41-the second air-inlet cavity;
Embodiment
Below in conjunction with accompanying drawing, specific embodiment of the utility model is illustrated:
As shown in Figure 1, 2, a kind of zero friction opens and closes ball valve, comprise the valve body 1 with cavity, and be arranged on the spheroid 2 in this cavity, also comprise the first auxiliary valve body 3 that is provided with the first air-inlet cavity 31 that is fixed on valve body 1 both sides and the second auxiliary valve body 4 that is provided with the second air-inlet cavity 41, piston cavity 8, be arranged in piston cavity 8 along the axially movable piston 5 of valve body 1, and be fixedly connected on piston 5 and seal with spheroid 2 sealing seat 6 contacting, described the first air-inlet cavity 31 and the second air-inlet cavity 41 are all communicated with piston cavity 8, for entering of air.
Between the first auxiliary valve body 3 and the second auxiliary valve body 4, form piston cavity 8, for the movement of piston 5.
In the one side contacting of the first auxiliary valve body 3, the second auxiliary valve body 4 and piston 5, be equipped with seal ring 7, for the leakage that prevents that piston 5 from producing air when mobile, cause air pressure not enough and piston 5 can not be moved or mobile not in place.
The diameter of the first air-inlet cavity 31 and the second air-inlet cavity 41 upper end-hole is greater than the diameter of cavity below it, while facilitating source of the gas to carry gas and the connection of the first air-inlet cavity 31 and the second air-inlet cavity 4.
In the time that ball valve is in the closed position, first spinning ball 2, make spheroid 2 in the closed position, first discharge the air in the first air-inlet cavity 31, control source of the gas simultaneously and deliver air in the second air-inlet cavity 41 and keep carrying constantly, because piston cavity 8 is connected with the second air-inlet cavity 41, along with the continuous input of air, piston cavity 8 internal air pressures are increasing, and then promote piston 5 and sealing seat 6 and move to spheroid 2, finally sealed seat 6 is close to and is sealed on spheroid 2, and now ball valve is in hermetically closing state;
In the time that ball valve need to be opened, first by the Bas Discharged in the second air-inlet cavity 41, control source of the gas to the first air-inlet cavity 31 air feed simultaneously, now along with continuous air feed, air pressure in piston cavity 8 also increases thereupon, promote piston 5 and drive sealing seat 6 to leave spheroid 2 one segment distances, then spinning ball 2, makes whole ball valve in opening state.
By carry out the keying of ball valve with upper type, make to have realized without friction between sealing seat 6 and spheroid 2, reduce operation moment of torsion, extend working life.
Above embodiment of the present utility model is had been described in detail, but described content is only preferred embodiment of the present utility model, can not be considered to for limiting practical range of the present utility model.All equalization variation and improvement etc. of doing according to the utility model scope, within all should still belonging to this patent covering scope.
Claims (4)
1. a friction opens and closes ball valve, comprise the valve body (1) with cavity, and be arranged on the spheroid (2) in this cavity, it is characterized in that: also comprise the first auxiliary valve body (3) that is provided with the first air-inlet cavity (31) that is fixed on valve body (1) both sides and the second auxiliary valve body (4) that is provided with the second air-inlet cavity (41), move axially and be arranged on the piston (5) in piston cavity (8) along valve body (1), and be fixedly connected on that piston (5) is upper seals with spheroid (2) sealing seat (6) contacting, described the first air-inlet cavity (31) and the second air-inlet cavity (41) are all communicated with piston cavity (8).
2. a kind of zero friction according to claim 1 opens and closes ball valve, it is characterized in that: described piston cavity (8) is formed by the space between the first auxiliary valve body (3) and the second auxiliary valve body (4).
3. a kind of zero friction according to claim 1 and 2 opens and closes ball valve, it is characterized in that: in the one side contacting of described the first auxiliary valve body (3), the second auxiliary valve body (4) and piston (5), be equipped with seal ring (7).
4. a kind of zero friction according to claim 1 opens and closes ball valve, it is characterized in that: the diameter of described the first air-inlet cavity (31) and the second air-inlet cavity (41) upper end-hole is greater than the diameter of cavity below it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320784597.4U CN203686216U (en) | 2013-11-30 | 2013-11-30 | Zero-friction opening and closing ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320784597.4U CN203686216U (en) | 2013-11-30 | 2013-11-30 | Zero-friction opening and closing ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203686216U true CN203686216U (en) | 2014-07-02 |
Family
ID=51008116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320784597.4U Expired - Fee Related CN203686216U (en) | 2013-11-30 | 2013-11-30 | Zero-friction opening and closing ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203686216U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107975616A (en) * | 2017-11-28 | 2018-05-01 | 永嘉县信诚科技服务有限公司 | Automatic high temperature opens and closes electric-controlled ball valve without friction |
| CN108194654A (en) * | 2017-12-27 | 2018-06-22 | 西安航天远征流体控制股份有限公司 | A kind of high-precision low torque regulation ball valve |
| CN111911669A (en) * | 2020-09-18 | 2020-11-10 | 华北电力大学 | Valve with composite axial and rotary actions |
| CN116292965A (en) * | 2023-05-19 | 2023-06-23 | 胜利阀门有限公司 | Friction-free water seal eccentric hemispherical valve |
-
2013
- 2013-11-30 CN CN201320784597.4U patent/CN203686216U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107975616A (en) * | 2017-11-28 | 2018-05-01 | 永嘉县信诚科技服务有限公司 | Automatic high temperature opens and closes electric-controlled ball valve without friction |
| CN108194654A (en) * | 2017-12-27 | 2018-06-22 | 西安航天远征流体控制股份有限公司 | A kind of high-precision low torque regulation ball valve |
| CN111911669A (en) * | 2020-09-18 | 2020-11-10 | 华北电力大学 | Valve with composite axial and rotary actions |
| CN116292965A (en) * | 2023-05-19 | 2023-06-23 | 胜利阀门有限公司 | Friction-free water seal eccentric hemispherical valve |
| CN116292965B (en) * | 2023-05-19 | 2023-08-01 | 胜利阀门有限公司 | Friction-free water seal eccentric hemispherical valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 300350 Tianjin city Jinnan District North Gate Electronic Industrial Park Patentee after: Bohai Valve Group Co., Ltd. Address before: 300350 Tianjin city Jinnan District North Gate Electronic Industrial Park Patentee before: BOHAI VALVE GROUP |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20181130 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |