CN102620006A - Low-torque temperature-resistant ball valve - Google Patents
Low-torque temperature-resistant ball valve Download PDFInfo
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- CN102620006A CN102620006A CN201210120765XA CN201210120765A CN102620006A CN 102620006 A CN102620006 A CN 102620006A CN 201210120765X A CN201210120765X A CN 201210120765XA CN 201210120765 A CN201210120765 A CN 201210120765A CN 102620006 A CN102620006 A CN 102620006A
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- gap
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Abstract
The invention provides a low-torque temperature-resistant ball valve, comprising a valve body, a valve cover, a valve ball, a valve seat and a valve rod, wherein the valve seat is arranged in a cavity formed by the valve body and the valve cover, the valve ball is arranged in the valve seat, the lower end of the valve rod is connected with the valve ball, the upper end of the valve rod is provided with an operating mechanism used for operating the valve rod to rotate, the valve seat is made from polytetrafluoroethylene material heated by high temperature above 95 DEG C, and propping contact surfaces of the valve cover and the valve body with the outer side of the valve seat are respectively embedded with an O-shaped ring. According to the low-torque temperature-resistant ball valve disclosed by the invention, temperature resistance range is increased, service life is prolonged, a friction force is reduced, and low torque is formed.
Description
Technical field
The present invention relates to a kind of ball valve, relate in particular to a kind of low moment heatproof ball valve.
Background technique
Ball valve is a kind of valve of widespread usage, and for the valve seat of ball valve, its requirement of satisfying sealing must meet following two conditions: by the sealed cover ratio pressure requirement, a bandwidth must be arranged; Sealing applies certain pressure to open-shut device.At present, the part ball valve utilizes teflon as seat material, and the physical property of teflon valve seat is following: can under-268 ℃ to 232 ℃ state of temperatures, use; Wear-resistant, be widely used in the sealing pair of valve; Teflon linear expansion coeffcient when temperature variation is big, is 0.00012/ ℃.With the HVAC is example, and when the linear expansion coeffcient of temperature sealing pair when 3-85 ℃ changes is 0.0102, ordinary ball valve will produce leakage under the temperature difference like this; The heat distortion temperature of teflon under pressure is 55 ℃; Existing ball valve compresses the bounce-back that forms sealing bandwidth and material self by vias inner walls and satisfies air-proof condition; If using under the temperature more than 55 ℃, elastic properties of materials will gradually change and disappear, and the sealing pair of valve will leak; The power of teflon bounce-back is bigger, big for the frictional force of spheroid thereupon, influences ball valve working life.
Summary of the invention
The object of the present invention is to provide a kind of ball valve, be used for solving the ball valve life-span that the teflon valve seat of existing ball valve causes short, problem such as be prone to leak, frictional force is big.
In order to address the above problem; Low moment heatproof ball valve provided by the invention comprises valve body, valve gap, valve ball, valve seat and valve rod; Said valve seat is arranged in the cavity that said valve body and said valve gap constitute, shown in valve ball be arranged in shown in valve seat, the lower end of said valve rod is connected with said valve ball; The upper end of said valve rod is provided with the operating device that is used to operate said valve rod rotation; Wherein, the teflon material of said valve seat for crossing through heat more than 95 ℃ all is embedded with O type circle on said valve gap and said valve body and the bearing surface that said valve seat outer side surface contacts.
According to a kind of preferred implementation of above-mentioned low moment heatproof ball valve, wherein, said operating device is electrical-controller or handle.
According to a kind of preferred implementation of above-mentioned low moment heatproof ball valve, wherein, comprise joint in a tubular form, said joint is vertically connected at said side of valve body; The surface of said valve ball is provided with curve bath, and said curve bath is vertical with the through hole of said valve ball, and the inwall of said valve body is provided with groove, and said groove and said joint connect; And when the straight passage that forms when the through hole of said valve gap, said valve ball and said valve body connected fully, said groove and said circular groove were corresponding.
A kind of preferred implementation according to above-mentioned low moment heatproof ball valve; Wherein, Said curve bath is positioned at a side of said valve ball bottom; When said valve ball rotation made said curve bath corresponding to the passage in said valve body or the said valve gap, passage in corresponding said valve body or the said valve gap and said joint connected.
Through 95 ℃ of heat, the physical property remarkable improvement of teflon utilizes it as valve seat, and sets up the less O type circle of elasticity, and the present invention not only temperature resistant range increases, prolonged the life-span, and has reduced frictional force, has formed low moment.
Description of drawings
Fig. 1 is the sectional structure schematic representation of the preferred embodiment of the present invention one;
Fig. 2 is the sectional structure schematic representation of the preferred embodiment of the present invention two;
Fig. 3 is the sectional structure schematic representation of the preferred embodiment of the present invention three;
Fig. 4 is the plan structure schematic representation of the preferred embodiment of the present invention three;
Fig. 5 is the valve ball structural representation of the preferred embodiment of the present invention three
Fig. 6 is along the sectional structure schematic representation of K-K line among Fig. 5;
Fig. 7 is the sectional structure schematic representation of the preferred embodiment of the present invention four.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is explained further details.
Fig. 1 schematically shows the structure of the preferred embodiment of the present invention one, and shown in it, this preferred embodiment one comprises valve body 1, valve ball 2, valve seat 3, O type circle 4, O type circle 5, valve gap 6, O type circle 7, valve rod 8, as the handle 91 of operating device.Valve ball 2 is arranged in the cavity of valve body 1 and valve gap 6 formations; The lower end of valve rod 8 is connected with valve ball 2; The upper end of valve rod 8 is provided for the handle 91 of operating valve lever 8 and valve ball 2 rotations; The teflon material of valve seat 2 for crossing through heat more than 95 ℃ all is embedded with O type circle 4 on the bearing surface of valve gap 6 and valve body 1 and valve seat 3 outer side contacts.
A kind of at this preferred embodiment; Utilize the advantage that polytetrafluoroethylmaterial material is wear-resistant, serviceability temperature is high; And road internal shaping true-to-size technology; With valve ball 2 and the sealing bandwidth that valve seat 3 shapings need, carry out 95 ℃ of heat then accurately, let teflon valve seat 3 have only bandwidth not have elasticity.The elasticity O type circle 4 that a heatproof is set in valve seat 3 back satisfies the needed pressure of sealing, its pressure have only teflon bounce pressure 1/3 to 1/5, so just formed low moment, reduced frictional force, improved valve working life.Also improved simultaneously its serviceability temperature scope.
Fig. 2 shows the structure of the preferred embodiment of the present invention two, and the difference of structure of the preferred embodiment two and preferred embodiment shown in Figure 1 is that its operating device is an electrical-controller 92, is convenient to realize automation.
Fig. 3-Fig. 6 shows the structure of the preferred embodiment of the present invention three and valve ball 2 thereof, and is as shown in the figure, and the preferred embodiment three also comprises joint 100 in a tubular form, and joint 100 is vertically connected at the side of valve body 1.The surface of valve ball 2 is provided with bigger curve bath 21 and less curve bath 22, and curve bath 22 is used for fixing the lower end of valve rod 8.Curve bath 21 is vertical with the through hole 23 of valve ball 2, and the inwall of valve body 1 is provided with groove 11, and groove 11 connects with joint 100.When the straight passage that forms when the channel B of the through hole 23 of the passage A of valve gap 6, valve ball 2 and valve body 1 connects fully, groove 11 and circular groove 21 correspondence of reaching the standard grade.
Further, curve bath 21 is positioned at a side of valve ball 2 bottoms, and when valve ball 2 rotation made curve bath 21 corresponding to the passage A of the channel B of valve body 1 or valve gap 6, corresponding valve body 1 or valve gap 6 connected with joint 100, form L shaped passage L.
This preferred embodiment three possesses the control transformation function, owing on same valve ball 2, offered two independently liquid paths, thus cut off the function that has realized that passage L cuts off each other between the two.The through hole 23 of valve ball 2 constitutes 90 ° of ALT-CH alternate channels with the curve bath of valve ball 2 21, and not only satisfy traffic requirement, and can change according to following operation: press Fig. 3 position, passage L closes; Press Fig. 3 position, 90 ° of valve rod 8 anticlockwises, straight passage A and passage L connect, and straight passage B closes; Press Fig. 3 position, 90 ° of valve rod 8 right rotations, straight passage B and passage L connect, and straight passage A closes.
Fig. 7 shows the structure of the preferred embodiment of the present invention four, and the difference of itself and the preferred embodiment of the present invention three is that its operating device is a handle 91, and the operating device of the preferred embodiment of the present invention three is an electrical-controller 92.
To sum up, the present invention has the big advantage of using scope, is applicable to FLUID TRANSPORTATION fields such as HVAC, air-conditioning, oil product, combustion gas, 3 to 120 ℃ of serviceability temperatures, and ambient temperature also can be used under-30 ℃ for a long time.Further, because the present invention has passage conversion and control performance, it can save the relevant a lot of original papers of pipeline on pipeline, simplify fluid delivery structure, reduces cost.
Can know that by technological general knowledge the present invention can realize through other the embodiment that does not break away from its spirit or essential feature.Therefore, above-mentioned disclosed embodiment with regard to each side, all just illustrates, and is not only.All within the scope of the present invention or the change in being equal to scope of the present invention all comprised by the present invention.
Claims (4)
1. one kind low moment heatproof ball valve; Comprise valve body, valve gap, valve ball, valve seat and valve rod; Said valve seat is arranged in the cavity that said valve body and said valve gap constitute, shown in valve ball be arranged in shown in valve seat, the lower end of said valve rod is connected with said valve ball; The upper end of said valve rod is provided with the operating device that is used to operate said valve rod rotation; It is characterized in that the teflon material of said valve seat for crossing through heat more than 95 ℃ all is embedded with O type circle on said valve gap and said valve body and the bearing surface that said valve seat outer side surface contacts.
2. low moment heatproof ball valve according to claim 1 is characterized in that said operating device is electrical-controller or handle.
3. low moment heatproof ball valve according to claim 1 is characterized in that also comprise joint in a tubular form, said joint is vertically connected at said side of valve body;
The surface of said valve ball is provided with curve bath, and said curve bath is vertical with the through hole of said valve ball, and the inwall of said valve body is provided with groove, and said groove and said joint connect; And when the straight passage that forms when the through hole of said valve gap, said valve ball and said valve body connected fully, said groove and said circular groove were corresponding.
4. low moment heatproof ball valve according to claim 3; It is characterized in that; Said curve bath is positioned at a side of said valve ball bottom; When said valve ball rotation made said curve bath corresponding to the passage in said valve body or the said valve gap, passage in corresponding said valve body or the said valve gap and said joint connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210120765.XA CN102620006B (en) | 2012-04-24 | 2012-04-24 | Low-torque temperature-resistant ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210120765.XA CN102620006B (en) | 2012-04-24 | 2012-04-24 | Low-torque temperature-resistant ball valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102620006A true CN102620006A (en) | 2012-08-01 |
| CN102620006B CN102620006B (en) | 2014-05-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210120765.XA Active CN102620006B (en) | 2012-04-24 | 2012-04-24 | Low-torque temperature-resistant ball valve |
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| Country | Link |
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| CN (1) | CN102620006B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4174090A (en) * | 1976-12-28 | 1979-11-13 | Nelimarkka Juha Antti Elia | Ball valve with spindle, having parallelepiped-bearing block joint portions |
| CN2415226Y (en) * | 1998-07-24 | 2001-01-17 | 殷岳 | Flow-adjusting, locking and heating three-way valve |
| CN201687982U (en) * | 2010-06-10 | 2010-12-29 | 沃泰阀门(昆山)有限公司 | Hard and soft dual seal fixed ball valve |
| CN201944326U (en) * | 2011-01-26 | 2011-08-24 | 玉环县精禹阀门厂（普通合伙） | Novel ball valve |
| CN202580095U (en) * | 2012-04-24 | 2012-12-05 | 邬官江 | Low-torque temperature-resistant ball valve |
-
2012
- 2012-04-24 CN CN201210120765.XA patent/CN102620006B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4174090A (en) * | 1976-12-28 | 1979-11-13 | Nelimarkka Juha Antti Elia | Ball valve with spindle, having parallelepiped-bearing block joint portions |
| CN2415226Y (en) * | 1998-07-24 | 2001-01-17 | 殷岳 | Flow-adjusting, locking and heating three-way valve |
| CN201687982U (en) * | 2010-06-10 | 2010-12-29 | 沃泰阀门(昆山)有限公司 | Hard and soft dual seal fixed ball valve |
| CN201944326U (en) * | 2011-01-26 | 2011-08-24 | 玉环县精禹阀门厂（普通合伙） | Novel ball valve |
| CN202580095U (en) * | 2012-04-24 | 2012-12-05 | 邬官江 | Low-torque temperature-resistant ball valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102620006B (en) | 2014-05-21 |
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Application publication date: 20120801 Assignee: Zhejiang Tian Yan Pty Ltd Assignor: Wu Guanjiang Contract record no.: 2015330000049 Denomination of invention: Low-torque temperature-resistant ball valve Granted publication date: 20140521 License type: Exclusive License Record date: 20150403 |
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Effective date of registration: 20160907 Address after: Taizhou City, Zhejiang province 318000 kumquat Chengjiang Industrial Zone Huangyan District Road Patentee after: Zhejiang Tian Yan Pty Ltd Address before: 318020, Zhejiang Province, Taizhou City, Huangyan District North City streets next to the Village No. 212 Patentee before: Wu Guanjiang |