CN102808962A - Floating ball valve - Google Patents
Floating ball valve Download PDFInfo
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- CN102808962A CN102808962A CN201210312028XA CN201210312028A CN102808962A CN 102808962 A CN102808962 A CN 102808962A CN 201210312028X A CN201210312028X A CN 201210312028XA CN 201210312028 A CN201210312028 A CN 201210312028A CN 102808962 A CN102808962 A CN 102808962A
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- valve
- valve seat
- ball
- seat
- floating ball
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Abstract
The invention relates to a floating ball valve. The floating ball valve comprises a valve ball, a valve seat and a valve body, wherein the valve seat is arranged between the valve ball and the valve body; and the space between the valve seat and the valve ball and the space between the valve seat and the valve body are sealed respectively. The floating ball valve is characterized in that the valve seat is an elastic valve seat; and a sealing surface between the valve seat and the valve ball is arc-shaped. The floating ball valve has a simple structure; the sealing surface between the valve seat and the valve body is designed in a fulcrum structure by designing the valve seat to be the elastic valve seat and designing the sealing surface between the valve seat and the valve ball in an arc shape, so that the sensitiveness of the valve to the compression amount of a material can be effectively reduced, the integral machining requirement can be reduced, and relatively low operating torque can be obtained; and the floating ball valve has the advantages of high sealing stability and long service life. The floating ball valve is mainly suitable for pipelines which are frequently operated, require low operating torque and are required to operate in a self-control mode if a pneumatic part or an electric part is provided.
Description
Technical field
The present invention relates to a kind of floating ball valve, especially design a kind of floating ball valve, belong to fluid dynamic transmission and medium transport field of engineering technology as fluid switch and control.
Background technique
Ball valve is widely used in every field such as oil, chemical industry, iron and steel, metallurgy and electric power, and with respect to the valve of other controlling plumbing fixtures medium circulations, ball valve has advantages such as resistance of medium is little, easy to operate.The sealing of floating ball valve is to rely on thermosets (like teflon) or thermoplastic material (like Nylon, polyether-ether-ketone) compression, produces resiliently deformable stress and guarantees sealing to form on the sealing surface than pressure stress.The valve seat of traditional floating ball valve is a rigid design, designs valve body, valve seat, the fit dimension of ball and valve gap and tolerance according to the decrement posterior infromation of different materials.Be the operation moment of torsion obtained and the balance between the sealability; Often very high to requirement on machining accuracy; Especially to Nylon class material; Be assurance moment of torsion and sealability, and after suction, still keep original operability, the requirement of machining accuracy is brought up to the stage that is close to harshness and is difficult to accomplish.
Summary of the invention
In order to overcome the deficiency of existing technology, the object of the present invention is to provide a kind of novel seat design that has, can reduce susceptibility to the material decrement, reduce processing request, and obtain the lower operation moment of torsion and the floating ball valve of stabilized seal performance.
The present invention realizes through following technological scheme:
A kind of floating ball valve; Comprise valve ball, valve seat and valve body; Said valve seat is arranged between valve ball and the valve body, and forms sealing between described valve seat and valve ball and the valve body respectively and it is characterized in that: described valve seat is an elastic seat, and the sealing surface between described valve seat and the valve ball is a cambered surface.
Further, the bottom plane of described valve seat and periphery form sealing with valve body respectively, and the sealing surface that forms constitutes two stressed fulcrums of valve seat.
As preferably, said valve seat axial compression magnitude of interference scope is 0.3 ~ 1.2mm.
The invention has the beneficial effects as follows: the present invention is simple in structure; Through being elastic seat with seat design, and through the sealing surface between valve seat and the valve ball is designed to arc, and the sealing surface between valve seat and the valve body is designed to fulcrum structure; Can effectively reduce the susceptibility of valve to the material decrement; Reduce whole processing request, and obtain lower operation moment of torsion, have having a few of sealing good stability, long service life.The present invention is mainly with being applicable to that operation is frequent, requiring low operation moment of torsion as disposing the pneumatic or electronic demand that needs automatic operation.
Description of drawings
Fig. 1 is the structural representation of floating ball valve of the present invention;
Fig. 2 is Fig. 1 partial structurtes enlarged views.
Main reference character implication is among the figure:
1, the periphery 22 of valve ball 2, valve seat 3, valve body 21, valve seat, the bottom plane of valve seat.
Embodiment
Below in conjunction with accompanying drawing the present invention is done explanation further.Fig. 1 is the structural representation of floating ball valve of the present invention; Fig. 2 is Fig. 1 partial structurtes enlarged views.
As depicted in figs. 1 and 2: a kind of floating ball valve; Comprise valve ball 1, valve seat 2 and valve body 3; Said valve seat 2 is arranged between valve ball 1 and the valve body 3, and forms sealing respectively between described valve seat 2 and valve ball 1 and the valve body 3, in this mode of execution; Described valve seat 2 is an elastic seat, and the sealing surface between described valve seat 2 and the valve ball 1 is a cambered surface.In addition, the periphery 21 of bottom plane of described valve seat 2 22 and valve seat forms sealing with valve body 3 respectively, and the sealing surface that forms constitutes two stressed fulcrums of valve seat 2; Be specially: under working condition; The axial force F p that valve ball 1 produces under line pressure, its normal component of force Fn acts on the centre of valve seat 2, under the point action of two sealing surfaces that form between valve seat 2 and the valve body 3; Form the bearing beam structure, increased the ability of valve seat 2 resiliently deformable under stressing conditions.
In addition; Said valve seat axial compression magnitude of interference scope is 0.3 ~ 1.2mm, and when the actual compression magnitude of interference was smaller value such as 0.3mm, valve seat 2 was that cambered surface is that local elasticity's distortion forms the initial sealing specific pressure with the sealing surface of valve ball 1; When magnitude of interference increases or the pressure increase; The seal f ace width of arc is regulated increase automatically to satisfy the sealing demand under the different pressures, and simultaneously above-mentioned bearing beam structure produces resiliently deformable and absorbs axial force, reduces the operation moment of torsion thereby reduce frictional force.
The present invention is simple in structure; Through valve seat 2 is designed to elastic seat, and through the sealing surface between valve seat 2 and the valve ball 1 is designed to arc, and the sealing surface between valve seat 2 and the valve body 3 is designed to fulcrum structure; Can effectively reduce the susceptibility of valve to the material decrement; Reduce whole processing request, and obtain lower operation moment of torsion, have having a few of sealing good stability, long service life.The present invention is mainly with being applicable to that operation is frequent, requiring low operation moment of torsion as disposing the pneumatic or electronic demand that needs automatic operation.
The above only is a preferred implementation of the present invention; Be noted that for those skilled in the art; Under the prerequisite that does not break away from the principle of the invention, can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (3)
1. floating ball valve; Comprise valve ball, valve seat and valve body, said valve seat is arranged between valve ball and the valve body, and forms sealing respectively between described valve seat and valve ball and the valve body; It is characterized in that: described valve seat is an elastic seat, and the sealing surface between described valve seat and the valve ball is a cambered surface.
2. a kind of floating ball valve according to claim 1 is characterized in that: the bottom plane of described valve seat and periphery form sealing with valve body respectively, and the sealing surface that forms constitutes two stressed fulcrums of valve seat.
3. a kind of floating ball valve according to claim 1 and 2 is characterized in that: said valve seat is 0.3 ~ 1.2mm in the scope of axial compression magnitude of interference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210312028XA CN102808962A (en) | 2012-08-29 | 2012-08-29 | Floating ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210312028XA CN102808962A (en) | 2012-08-29 | 2012-08-29 | Floating ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102808962A true CN102808962A (en) | 2012-12-05 |
Family
ID=47232766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210312028XA Pending CN102808962A (en) | 2012-08-29 | 2012-08-29 | Floating ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102808962A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5099883A (en) * | 1990-12-27 | 1992-03-31 | Aeroquip Corporation | Low spill identical half coupling |
| CN101907177A (en) * | 2010-09-07 | 2010-12-08 | 浙江武荣阀门有限公司 | Exquisite soft sealed ball valve |
| CN201723767U (en) * | 2010-07-26 | 2011-01-26 | 苏州工业园区思达德阀门有限公司 | Floating ball valve |
| CN102620005A (en) * | 2012-04-13 | 2012-08-01 | 江苏泰伯铸造有限公司 | Low-operating torque and low-leakage floating ball valve |
| CN202790646U (en) * | 2012-08-29 | 2013-03-13 | 昆山维萨阀门有限公司 | Floating ball valve |
-
2012
- 2012-08-29 CN CN201210312028XA patent/CN102808962A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5099883A (en) * | 1990-12-27 | 1992-03-31 | Aeroquip Corporation | Low spill identical half coupling |
| CN201723767U (en) * | 2010-07-26 | 2011-01-26 | 苏州工业园区思达德阀门有限公司 | Floating ball valve |
| CN101907177A (en) * | 2010-09-07 | 2010-12-08 | 浙江武荣阀门有限公司 | Exquisite soft sealed ball valve |
| CN102620005A (en) * | 2012-04-13 | 2012-08-01 | 江苏泰伯铸造有限公司 | Low-operating torque and low-leakage floating ball valve |
| CN202790646U (en) * | 2012-08-29 | 2013-03-13 | 昆山维萨阀门有限公司 | Floating ball valve |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20121205 |