CN103133712A - Double-wedge type double-ball-clack valve - Google Patents
Double-wedge type double-ball-clack valve Download PDFInfo
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- CN103133712A CN103133712A CN2013100756762A CN201310075676A CN103133712A CN 103133712 A CN103133712 A CN 103133712A CN 2013100756762 A CN2013100756762 A CN 2013100756762A CN 201310075676 A CN201310075676 A CN 201310075676A CN 103133712 A CN103133712 A CN 103133712A
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Abstract
The invention discloses a double-wedge type double-ball-clack valve. A sphere of the double-wedge type double-ball-clack valve is enabled to open and close through a method of exerting external force without rotation, and partial stress, friction and abrasion are avoided and reduced. The double-wedge type double-ball-clack valve comprises a valve body, a valve seat, a support of the valve body, the sphere and a valve rod, wherein the valve seat is arranged in a flow passage in the valve body, the sphere corresponds to the valve seat and is arranged in the valve body, and the valve rod is connected with the sphere. The valve rod penetrates through gland packing of the valve body. A threaded rod at the upper end of the valve body is matched with a hand wheel nut on the support of the valve body. An L-shaped guide groove is formed in the side face of the valve rod. The support of the valve body is provided with a guide pin in a fixed mode, wherein the end portion of the guide pin is inserted into the guide groove. The double-wedge type double-ball-clack valve is characterized in that the sphere is composed of a left ball clack and a right ball clack, an upper portion between the two ball clacks is open upper taper space, a lower portion between the two ball clacks is open lower taper space, an upper wedge sphere is arranged in the upper taper space, a lower wedge sphere is arranged in the lower taper space, the upper wedge sphere corresponds to the lower wedge sphere, the upper end of the upper wedge sphere is fixedly connected with the lower end of the valve body, the lower end of the lower wedge sphere is connected with the valve body, an extending pin is arranged at the upper end of the upper wedge sphere or the lower end of the valve rod, and two ends of the extending pin are respectively arranged in horizontal grooves which are reserved at two upper ends of the two ball clacks.
Description
Technical field
The present invention relates to a kind of ball valve, particularly a kind of with bulb stopper both sides sealing face being separated with valve seat or the bivalve ball valve of coarctate device, form band wedge-type guiding element between the bivalve of bulb stopper, drive the ball valve that bulb stopper is closed or opened.
Background technique
The ball valve (floating type, fixed) that uses at present both at home and abroad, spheroid rotate when implementing switch, and spheroid and valve seat surface produce the sassafras that rubs of sliding and cause sealing surface abrasion and sassafras to hinder, and are also to cause the stuck main cause of sealing surface of seat leakage.Spheroid produces sassafras during spinning ball under the effect of pipeline medium heavy load to injure large load torque be the key technology problem that ball valve needs to be resolved hurrily.In order to solve such problem, the Chinese utility model patent specification on January 12nd, 2000 disclosed a kind of " bidirectional metal sealing ball valve " (patent No. 99225554.6), its have valve body, the support of the valve seat of valve body inner flow passage, valve body, in valve body the spheroid corresponding with valve seat, the valve rod that is connected with spheroid, valve rod passes valve body, the screw rod of valve rod upper end coordinates with hand wheel nut on the valve body support, stem side is worn L shaped guide groove, and support is fixed with the pilot pin that the end is inserted in guide groove; Spheroid is two of left and right ball clack, and between two ball clacks, for making progress uncovered cone space, cone space is to there being the wedge spheroid that is slidably connected, and the wedge spheroid is connected with valve rod.Such ball valve produces sassafras and injures large load torque in the time of can avoiding under the effect of medium heavy load spinning ball.But the ball clack seal valve seat is closed in wedge spheroid extruding, and pressure still concentrates on ball clack and valve seat bottom, and in the opening and closing process, or the bottom of ball clack still will cause local damage greater than other positions, causes leakage or scraps.The rotation process of the opening and closing of two ball clacks is to drive loosening ball clack by trapezoidal wedge spheroid (also claiming the wedge spheroid) fitting surface to rotate, also cause the local pressure of wedge spheroid and ball clack fitting surface, time one length also can cause concentrated wear, the formation fitting surface is misfitted, and causes poorly sealed or damages.
Summary of the invention
The object of the invention is to overcome the deficiency of above-mentioned technology, provide a kind of obstructed overwinding to pass the method that applies external force and make the spheroid switch, and avoid and reduce local pressure and the two ball clack valves of a kind of double wedge type of rub sassafras and wearing and tearing.
The two ball clack valves of double wedge type of the present invention, have valve body (14), the support (8) of the valve seat (16) of valve body inner flow passage, valve body, in valve body the spheroid (15) corresponding with valve seat, the valve rod that is connected with spheroid, valve rod passes the stuffing box packing of valve body, the screw rod of valve rod upper end coordinates with handwheel (2) nut on valve body support (8), stem side is worn L shaped guide groove, and support is fixed with the pilot pin that the end is inserted in guide groove; It is characterized in that: spheroid is two of left and right ball clack, upper part between two ball clacks and lower position are uncovered upper conical space and inferior pyramidal space, upper conical space and inferior pyramidal space corresponding have upper wedge spheroid and hyposphene spheroid, upper wedge spheroid upper end is fixedly connected with the valve rod lower end, hyposphene spheroid lower end is connected with valve body, upper wedge spheroid upper end or valve rod lower end be also with the pin that stretches out, and pin two ends lay respectively at the transverse groove that two ball clack upper ends are left.Such ball valve, during open and close, the rotation of spheroid adopts upper and lower two wedge spheroids to drive simultaneously two ball clack bodies, sphere is broken away from and press to valve seat corresponding close or seal ring process, and is stressed more even, reduces the inhomogeneous wearing and tearing of sealing surface and sphere.Equally, upstream pressure P1 and downstream pressure P2 pressure reduction are reduced, thereby alleviate the unlatching moment of torsion, also greatly reduce sealing surface and sphere abrasion.Upper and lower two wedge spheroids, upper wedge spheroid and hyposphene spheroid and upper conical space and inferior pyramidal space corresponding part can be multiple tapers, can bore or the rectangle cone side of being, can be also circular cone.Be circular cone, it can be to be fixedly connected with that hyposphene spheroid lower end is connected with valve body, can be also to be rotationally connected.The side of being cone or rectangle cone, as trapezoidal, it is to be rotationally connected that hyposphene spheroid lower end is connected with valve body.Be rotationally connected for hyposphene spheroid and valve body, also in order to prevent the concentrated wear that causes of hyposphene spheroid and ball clack fitting surface, the hyposphene spheroid is with the fixing pin that stretches out, and fixing pin two ends lay respectively at the transverse groove that two ball clack lower ends are left.Hyposphene spheroid and valve body are rotationally connected, and preferably are threaded, and the direction of screw thread rotation is opposite with the hand of spiral of valve rod, are screw rod as hyposphene spheroid lower end, and screw rod is connected with the nut thread that valve body is inlayed, and the direction of screw thread rotation is opposite with the hand of spiral of valve rod; Can make like this wedge spheroid and hyposphene spheroid push simultaneously ball clack or unclamp simultaneously ball clack extruding, more can ensure the more uniform stressed and concentrated wear that do not produce sealing surface of ball clack sealing surface corresponding to valve seat.For undue the rocking and prevent that ball clack is asynchronous of ball clack after preventing from opening, valve rod also draws cap with the pawl type that stretches out, and the pawl type draws cap two ends to be located at outside two ball clack upper end side faces.Equally, the hyposphene spheroid preferably also draws cap with the pawl type that stretches out, and the pawl type draws cap two ends to be located at outside two ball clack lower end side faces.In order more easily to guarantee machining accuracy and form and position tolerance, prevent wedge spheroid and cone space concentrated wear and discontinuity, the cone of upper wedge spheroid and hyposphene spheroid and upper conical space and inferior pyramidal space corresponding is preferably cone.
Description of drawings
Fig. 1 has represented the two ball clack gate principle structural representations of a kind of double wedge type of the present invention, Fig. 2 is the main sectional view of two two ball clacks of ball clack gate principle structure of this double wedge type, Fig. 3 is the plan view of two two ball clacks of ball clack gate principle structure of this double wedge type, and Fig. 4 is the worm's eye view of two two ball clacks of ball clack gate principle structure of this double wedge type.Fig. 5 is a kind of structural representation for the two ball clack valve products of ducted double wedge type of the present invention.
Embodiment
Embodiment 1, the two ball clack valves (referring to Fig. 1-5) of a kind of double wedge type of the present invention, have valve body, the support of the valve seat of valve body inner flow passage, valve body, in valve body the spheroid corresponding with valve seat C, D, the valve rod M that is connected with spheroid, the Sealing that valve rod passes valve body stretches to the top of valve body, the screw rod of valve rod upper end coordinates with hand wheel nut on the valve body support, stem side is worn L shaped guide groove, and support is fixed with the pilot pin L that the end is inserted in guide groove; It is characterized in that: spheroid is two of left and right ball clack A, B, between two ball clacks, upper part and lower position are uncovered upper conical space and inferior pyramidal space, upper conical space and inferior pyramidal space corresponding have upper wedge spheroid G and hyposphene spheroid H, the upper end is fixedly connected with the valve rod lower end, hyposphene spheroid lower end N is connected with valve body screw thread, upper wedge spheroid upper end is also with the pin that stretches out, and pin two ends lay respectively at the transverse groove that two ball clack upper ends are left.The hyposphene spheroid is with the fixing pin that stretches out, and fixing pin two ends lay respectively at the transverse groove that two ball clack lower ends are left.Valve rod also draws cap E with the pawl type that stretches out, and the pawl type draws cap two ends to be located at outside two ball clack upper end side faces.Equally, the hyposphene spheroid preferably also draws cap F with the pawl type that stretches out, and the pawl type draws cap two ends to be located at outside two ball clack lower end side faces.Such double wedge type bivalve Ball valve, during open and close, the rotation of spheroid adopts upper and lower two wedge spheroids to drive simultaneously two ball clack bodies, make sphere break away from and press to valve seat corresponding close or seal ring process, stressed more even, reduce the inhomogeneous wearing and tearing of sealing surface and sphere.Equally, when opening this ball valve, the twisting handwheel first promotes the wedge spheroid at L shaped guide groove guiding lower valve rod, make two ball clacks become flexible and break away from from sealing surface corresponding to valve seat, and conducting before and after valve, upstream pressure P1 and downstream pressure P2 pressure reduction approach, and ball clack does not almost have lateral pressure.When the guiding groove of valve rod rises to the position of pilot pin L towards the horizontal slot of lower end, rotating handwheel will rotate with the pin of ovable valve stem and upper wedge spheroid upper end, easily stir by pin the transverse groove that two ball clack upper ends are left, drive two ball clacks and rotate, make the corresponding opening conducting of valve seat of passage and both sides between two ball clacks.The hyposphene spheroid by its upper end with pin and the transverse groove that leaves of two ball clack lower ends drive and rotate.So pass through screw thread (sense of rotation is opposite with the screw thread of valve rod) when being connected with valve body when the lower end of hyposphene spheroid, the process of rotation also makes the hyposphene spheroid descend, and makes two ball clacks more break away from valve seat.The rotation process of two ball clacks has alleviated the unlatching moment of torsion more greatly, also greatly reduces sealing surface and sphere abrasion.When wanting throttle down, the counter-rotation handwheel, band ovable valve stem and two ball clacks and the revolution of upper hyposphene spheroid, two loosening ball clacks are turned back to and the position of showing effect, also not can and the corresponding sealing surface of valve seat between produce friction.And that hyposphene spheroid turning course is the direction of screw thread rotation is opposite with the hand of spiral of valve rod, and the hyposphene spheroid moves on slightly, for the location with compress ball clack and prepare.Then reversing handwheel moves down valve rod continuously in a large number, the wedge spheroid is moved down open ball clack, the collaborative ball clack that opens is also pushed in the reaction simultaneously of hyposphene spheroid, make two ball clacks steadily be squeezed in the corresponding sealing surface of valve seat to both sides, ensure that ball clack sealing surface corresponding to valve seat is more uniform stressed, the concentrated wear that does not produce the sphere of sealing surface and ball clack.
Embodiment 2,
The two ball clack valves of a kind of double wedge type of the present invention, see accompanying drawing 5, valve body (14) and the valve gap (11) that is fixedly connected with by bolt (25) and sealing gasket (26) are arranged, on the valve seat (16) of valve body inner flow passage, valve body by the fixing support (8) of bolt (9), in valve body the spheroid (15) corresponding with valve seat, the valve rod that is connected with spheroid, valve rod passes seal ring (13) stuffing box packing (12) of valve body, and Gland (10) is connected with valve gap and overstocks on filler by bolt (24) and nut (23).The nut (5) at handwheel (2) middle part on the screw rod of valve rod upper end and valve body support (8) coordinates.The multidiameter shaft of nut (5) lower end and the axle sleeve (4) of support accompany pad (3) movingly between axle sleeve and handwheel, nut (5) upper end is fixed by back of the body cap (1) and handwheel.Stem side is worn L shaped guide groove (7), and support is fixed with the pilot pin (6) that the end is inserted in guide groove.Spheroid is two ball clacks in left and right (15), upper part between two ball clacks and lower position are uncovered upper conical space and inferior pyramidal space, upper conical space and inferior pyramidal space corresponding have upper wedge spheroid and hyposphene spheroid, upper wedge spheroid upper end is fixedly connected with the valve rod lower end, the screw rod of hyposphene spheroid lower end and the nut of inlaying (19) under valve body are connected, the nut of inlaying (19) is connected with the center hole of valve body lower portion, and fixes with valve body by end cap (20) and pressing plate (20) and bolt (22).Between upper wedge spheroid upper end and valve rod lower end, also with the pin that stretches out (29), pin two ends lay respectively at the transverse groove that two ball clack upper ends are left.The hyposphene spheroid is also with the fixing pin that stretches out (17), and fixing pin two ends lay respectively at the transverse groove that two ball clack lower ends are left.For undue the rocking and prevent that ball clack is asynchronous of ball clack after preventing from opening, valve rod also draws cap (28) with the pawl type that stretches out and connects by fixing pin (27), and the pawl type draws cap two ends to be located at outside two ball clack upper end side faces.Equally, the hyposphene spheroid also draws cap with the pawl type that stretches out, and the pawl type draws cap two ends to be located at outside two ball clack lower end side faces.Such ball valve, when handwheel rotated, valve rod was subjected to do lifting under the restriction of the rotation of nut and pilot pin, drives the rotations that spheroid is done 90 degree.The fixing pin (29 17) that stretch out at upper wedge spheroid and hyposphene spheroid two ends can move up and down in the transverse groove of ball clack up and down, is being connected two ball clacks, along with rotarily opening or the closing process transmitting torque.When valve rod moves up vertically, two ball clacks break away from sealing surface of seats, and 90-degree rotation then and under guide groove and pilot pin effect makes valve opening.When opening this ball valve, the twisting handwheel first promotes the wedge spheroid at L shaped guide groove guiding lower valve rod, makes two ball clacks become flexible and break away from from sealing surface corresponding to valve seat, and conducting before and after valve, upstream pressure P1 and downstream pressure P2 pressure reduction approach, and ball clack does not almost have lateral pressure.When the guiding groove of valve rod rises to the position of pilot pin L towards the horizontal slot of lower end, rotating handwheel will rotate with the pin of ovable valve stem and upper wedge spheroid upper end, easily stir by fixing pin (29) transverse groove that two ball clack upper ends are left, drive two ball clacks and rotate, make the corresponding opening conducting of valve seat of passage and both sides between two ball clacks.The hyposphene spheroid by its upper end with pin and the transverse groove that leaves of two ball clack lower ends drive and rotate.The screw rod (30) of the screw rod of valve rod and hyposphene spheroid lower end adopts equal diameter, pitch is identical, Hand of spiral is opposite, realized also that when valve rod rotates wedge spheroid and hyposphene spheroid synchronously synchronize rotation with spheroid (two ball clacks), also realized the function that the hyposphene spheroid synchronously dwindles spheroid (two ball clacks) spreading.So pass through screw thread (sense of rotation is opposite with the screw thread of valve rod) when being connected with valve body when the lower end of hyposphene spheroid, the process of rotation also makes the hyposphene spheroid descend, and makes two ball clacks more break away from valve seat.The rotation process of two ball clacks has alleviated the unlatching moment of torsion more greatly, also greatly reduces sealing surface and sphere abrasion.When wanting throttle down, the counter-rotation handwheel, band ovable valve stem and two ball clacks and the revolution of upper hyposphene spheroid, two loosening ball clacks are turned back to and the position of showing effect, also not can and the corresponding sealing surface of valve seat between produce friction.And that hyposphene spheroid turning course is the direction of screw thread rotation is opposite with the hand of spiral of valve rod, and the hyposphene spheroid moves on slightly, for the location with compress ball clack and prepare.Then reversing handwheel moves down valve rod continuously in a large number, the wedge spheroid is moved down open ball clack, the collaborative ball clack that opens is also pushed in the reaction simultaneously of hyposphene spheroid, make two ball clacks steadily be squeezed in the corresponding sealing surface of valve seat to both sides, ensure that ball clack sealing surface corresponding to valve seat is more uniform stressed, the concentrated wear that does not produce the sphere of sealing surface and ball clack.
Claims (7)
1. be used for the two ball clack valves of ducted a kind of double wedge type, have valve body (14), the support (8) of the valve seat (16) of valve body inner flow passage, valve body, in valve body the spheroid (15) corresponding with valve seat, the valve rod that is connected with spheroid, valve rod passes the stuffing box packing of valve body, the screw rod of valve rod upper end coordinates with handwheel (2) nut on valve body support (8), stem side is worn L shaped guide groove, and support is fixed with the pilot pin that the end is inserted in guide groove; It is characterized in that: spheroid is two of left and right ball clack, upper part between two ball clacks and lower position are uncovered upper conical space and inferior pyramidal space, upper conical space and inferior pyramidal space corresponding have upper wedge spheroid and hyposphene spheroid, upper wedge spheroid upper end is connected with the valve rod lower end, hyposphene spheroid lower end is connected with valve body, upper wedge spheroid upper end or valve rod lower end be also with the pin that stretches out, and pin two ends lay respectively at the transverse groove that two ball clack upper ends are left.
2. two ball clack valves of double wedge type as claimed in claim 1, it is characterized in that: hyposphene spheroid and valve body are rotationally connected, and the hyposphene spheroid is with the fixing pin that stretches out, and fixing pin two ends lay respectively at the transverse groove that two ball clack lower ends are left.
3. two ball clack valves of double wedge type as claimed in claim 1, it is characterized in that: the hyposphene spheroid is connected with valve body screw thread, and the direction of screw thread rotation is opposite with the hand of spiral of valve rod.
4. two ball clack valves of double wedge type as said in claim 1 or 3 is characterized in that: hyposphene spheroid lower end is screw rod, and screw rod is connected with the nut thread that valve body is inlayed, and the direction of screw thread rotation is opposite with the hand of spiral of valve rod.
5. two ball clack valves of double wedge type as claimed in claim 1, it is characterized in that: valve rod also draws cap with the pawl type that stretches out, and the pawl type draws cap two ends to be located at outside two ball clack upper end side faces.
6. two ball clack valves of double wedge type as claimed in claim 2, it is characterized in that: the hyposphene spheroid also draws cap with the pawl type that stretches out, and the pawl type draws cap two ends to be located at outside two ball clack lower end side faces.
7. as claim 1 or the two ball clack valves of 2 or 3 or 4 or 5 said double wedge types, it is characterized in that: the cone of upper wedge spheroid and hyposphene spheroid and upper conical space and inferior pyramidal space corresponding is cone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310075676.2A CN103133712B (en) | 2013-03-11 | 2013-03-11 | Double-wedge type double-ball-clack valve |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310075676.2A CN103133712B (en) | 2013-03-11 | 2013-03-11 | Double-wedge type double-ball-clack valve |
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| CN103133712A true CN103133712A (en) | 2013-06-05 |
| CN103133712B CN103133712B (en) | 2017-07-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106704627A (en) * | 2017-02-08 | 2017-05-24 | 江苏神通阀门股份有限公司 | Processing method of split ball of ball valve |
| CN116398663A (en) * | 2023-06-08 | 2023-07-07 | 江苏诚功阀门科技有限公司 | W-shaped ball valve |
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| CN201802901U (en) * | 2009-07-19 | 2011-04-20 | 江苏江恒阀业有限公司 | Self-cleaning metal hard sealing ball valve |
| CN201982707U (en) * | 2010-12-03 | 2011-09-21 | 浙江正华阀门厂 | Unfurled metal-sealed ball valve |
| CN203214922U (en) * | 2013-03-11 | 2013-09-25 | 大连大洋阀门研究发展有限公司 | Double-wedge type dual-clack ball valve |
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2013
- 2013-03-11 CN CN201310075676.2A patent/CN103133712B/en active Active
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| US4666124A (en) * | 1986-04-29 | 1987-05-19 | Johnston Pump/General Valve, Inc. | Valve operator for a plug-type valve |
| RU2188978C2 (en) * | 1998-09-11 | 2002-09-10 | ОАО "Тяжпромарматура" | Ball cock |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106704627A (en) * | 2017-02-08 | 2017-05-24 | 江苏神通阀门股份有限公司 | Processing method of split ball of ball valve |
| CN106704627B (en) * | 2017-02-08 | 2019-03-15 | 江苏神通阀门股份有限公司 | The processing method to bulb separation body of ball valve |
| CN116398663A (en) * | 2023-06-08 | 2023-07-07 | 江苏诚功阀门科技有限公司 | W-shaped ball valve |
| CN116398663B (en) * | 2023-06-08 | 2023-08-04 | 江苏诚功阀门科技有限公司 | W-shaped ball valve |
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