CN1490544A - Dual eccentric spherical cock - Google Patents
Dual eccentric spherical cock Download PDFInfo
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- CN1490544A CN1490544A CNA031253288A CN03125328A CN1490544A CN 1490544 A CN1490544 A CN 1490544A CN A031253288 A CNA031253288 A CN A031253288A CN 03125328 A CN03125328 A CN 03125328A CN 1490544 A CN1490544 A CN 1490544A
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- valve
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- ball
- valve body
- valve shaft
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Abstract
A cock valve with dual eccentric balls is composed of drive mechanism, valve body, upper and lower eccentrical valve axles, and lower end cover. The lower end of upper eccentrical valve axle and the upper end of the lower one are fixed to a spherical flap, 1-2 sealing valve seats are connected to valve body. The empty cavity formed by valve body and valve seats has spherical shape. The internal side of channel opening of sealing valve seat is a sealing surface matched with the sealing surface of said spherical flap. Its advantages are no flow resistance, high pressure bearing power and long service life.
Description
Technical field
The present invention relates to a kind of valve, it is widely used in water in the engineerings such as tap water, oil, coal gas, rock gas, electric power, smelting, sewage treatment, gas, oil, the steam pipeline, comes the flow direction of controlling plumbing fixtures medium and regulates the flow of medium.
Background technique
Existing valve kind is more, mainly contains gate valve, butterfly valve, and it is big that gate valve exists startup to close moment, the switching time is long, weight is big, and flashboard does not have self-locking and easily trembles in the fluid in pipeline, and it is fragile greatly to cause the friction of pipeline noise and damage parts, feed screw nut's lifting gear to decrease coefficient.Though butterfly valve has overcome some deficiency of gate valve, there is topmost deficiency in it is the centre that butterfly plate is in pipeline, has reduced circulation area, has increased flow resistance.As number of patent application 02224046.2, " a kind of bidirectional metallic seal butterfly valve ".Butterfly valve with the DN400 latus rectum is an example, and theoretical circulation area should be (π R
2) be about 1256cm
2Yet butterfly plate axis hole position is 8cm, and its area is that 8 * 40cm is about 320cm
2, account for 25% of theoretical aisle spare, because the minimizing of aisle spare, the inevitable increase of flow resistance meeting has caused the pressure loss in the pipe network.
Summary of the invention
At above-mentioned deficiency, the object of the present invention is to provide a kind of full tunnel not have the two eccentric ball-type stopcock of flow resistance, pressure-bearing.
To achieve these goals, technological scheme of the present invention is: two eccentric ball-type stopcocks, it comprises driving mechanism, valve body, last eccentric valve shaft, following eccentric valve shaft, lower end cap, driving mechanism is fixedlyed connected with the joint chair 10 of valve body, the upper end of going up eccentric valve shaft 3 is connected with driving mechanism, and its lower end is positioned at the cavity of valve body 8, and the upper end of following eccentric valve shaft 7 is positioned at the cavity of valve body 8, its lower end is connected with valve body 8 by axle sleeve, and is covered mutually by lower end cap 9; The axis hole center line of valve body 8 and valve sealing surface center line off-centre, upward the center line off-centre of the shaft centre line of eccentric valve shaft 3 underparts, following eccentric valve shaft 7 upper end portions and last eccentric valve shaft 3, following eccentric valve shaft 7; It is characterized in that: go up the underpart of eccentric valve shaft 3, the fixedly connected ball clack 4 in upper end portion of following eccentric valve shaft 7, valve body 8 connects 1 to 2 seal valve seat 6 by screw rod 11, the cavity that valve body 8, seal valve seat 6 formed be spherical, and the runner mouth of seal valve seat 6 is inboard to be sealing surface and to match with the sealing surface of ball clack 4; The U-shaped that described ball clack 4 keeps flat, the U-shaped two ends of ball clack 4 have the valve shaft hole, upward eccentric valve shaft 3, following eccentric valve shaft 7 are connected with two valve shaft holes of ball clack 4 respectively, the bottom outer rim sphere of U-shaped is a sealing surface, the sealing surface of ball clack 4 matches with the runner mouth sealing surface of seal valve seat 6, and the U-shaped two ends valve shaft centerline hole of ball clack 4 is corresponding to the runner mouth inner seal interplanar distance of seal valve seat 6 with the center line of last eccentric valve shaft 3, following eccentric valve shaft 7 to the sealing surface spacing of ball clack 4 bottom outer rims.
Described valve body 8 one sides connect a seal valve seat 6, and opposite side connects a valve flange 5, and the cavity that valve flange 5, valve body 8, seal valve seat 6 are formed is spherical.
The cavity that described valve body 8 both sides respectively connect a seal valve seat 6,2 side sealing valve seats 6, valve body 8 compositions is spherical.
Described valve body 8 one sides connect a seal valve seat 6, and the cavity that valve body 8, seal valve seat 1 are formed is spherical.
Described driving mechanism is man-operated mechanism or motor drive mechanism or pneumatic mechanism or the mechanism of surging.
Described man-operated mechanism is made up of handwheel 1, Worm gear case 2, and handwheel 1 is connected with the worm screw of Worm gear case 2, and worm gear is connected with last eccentric valve shaft 3.
The ball face sealing face skin of described ball clack 4 is the vulcanized rubber layer.
The present invention adopts the U-shaped ball clack 4 of placing flat as valve plate, and driving mechanism adopts the existing reed valve driving mechanism, and promptly the 0-90 degree is the open and close state, and when opening, ball clack 4 is positioned at spherical cavity inboard, does not occupy runner, and promptly full tunnel does not have flow resistance; When closing, the sealing surface of ball clack 4 closely matches with the runner mouth sealing surface of seal valve seat 6, and the runner mouth from other direction of medium flows to, and props up the sealing surface of ball clack 4, make the sealing of runner mouth sealing surface of the sealing surface of ball clack 4 and seal valve seat 6 just strong, pressure-bearing is just strong; When 2 seal valve seats 6 of employing, but two-way choice, and two-way sealing, pressure-bearing are all strong.The outer vulcanized rubber that adopts of the ball face sealing face of ball clack 4 prevents that the incrustation scale that gets rusty from forming.Adopt two or three joint designs, simplified processing technology, and can reach the purpose of adjusting spacing, the sealing surface of ball clack 4 is cooperated with the runner mouth sealing surface of seal valve seat 6 reach the best by the increase and decrease gasket seal.
The present invention adopts two eccentric structures, between preceding 85 ° of left and right regions, the sealing surface of ball clack 4 does not contact with the runner mouth sealing surface of seal valve seat 6, in the time of 85 °-90 ° when closing, the runner mouth sealing surface of the sealing surface of ball clack 4 and seal valve seat 6 is just satisfied the step and is contacted, and has and go on foot interference then and compress compensation ability; Ball clack upwards lifts the runner mouth sealing surface that leaves seal valve seat 6 when opening, and the moment of switch is alleviated greatly; Reduce the wearing and tearing of sealing surface simultaneously, prolonged its working life.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1 when closing
Fig. 2 is the sectional view of the embodiment of the invention 1 when opening
Fig. 3 is the axis hole center line of the embodiment of the invention 1 valve body 8 and the structural representation of valve sealing surface center line off-centre
Fig. 4 is the structural representation of the center line off-centre of the shaft centre line of eccentric valve shaft 3 underparts on the embodiment of the invention 1 and last eccentric valve shaft 3
Fig. 5 is the structural representation of the embodiment of the invention 1 ball clack 4
Fig. 6 is the structural representations of the embodiment of the invention 2 rights when closing
Fig. 7 is the sectional view of the embodiment of the invention 2 when opening
Fig. 8 is the structural representation of the embodiment of the invention 3 when closing
Fig. 9 is the sectional view of the embodiment of the invention 3 when opening
Embodiment
Embodiment 1:
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, two eccentric ball-type stopcocks, it comprises driving mechanism, valve body, last eccentric valve shaft, following eccentric valve shaft, lower end cap, driving mechanism is fixedlyed connected with the joint chair 10 of valve body, the upper end of going up eccentric valve shaft 3 is connected with driving mechanism, and its lower end is positioned at the cavity of valve body 8, and the upper end of following eccentric valve shaft 7 is positioned at the cavity of valve body 8, its lower end is connected with valve body 8 by axle sleeve, and is covered mutually by lower end cap 9; The axis hole center line of valve body 8 and valve sealing surface center line off-centre, upward the center line off-centre of the shaft centre line of eccentric valve shaft 3 underparts, following eccentric valve shaft 7 upper end portions and last eccentric valve shaft 3, following eccentric valve shaft 7; Go up the underpart of eccentric valve shaft 3, the fixedly connected ball clack 4 in upper end portion of following eccentric valve shaft 7, valve body 8 connects a seal valve seat 6 by screw rod 11, the cavity that valve body 8, seal valve seat 6 formed be spherical, and the runner mouth of seal valve seat 6 is inboard to be sealing surface and to match with the sealing surface of ball clack 4; The U-shaped that described ball clack 4 keeps flat, the U-shaped two ends of ball clack 4 have the valve shaft hole, upward eccentric valve shaft 3, following eccentric valve shaft 7 are connected with two valve shaft holes of ball clack 4 respectively, the bottom outer rim sphere of U-shaped is a sealing surface, the sealing surface of ball clack 4 matches with the runner mouth sealing surface of seal valve seat 6, and the U-shaped two ends valve shaft centerline hole of ball clack 4 is corresponding to the runner mouth inner seal interplanar distance of seal valve seat 6 with the center line of last eccentric valve shaft 3, following eccentric valve shaft 7 to the sealing surface spacing of ball clack 4 bottom outer rims.
Described valve body 8 one sides connect a seal valve seat 6 by screw rod 11, and opposite side connects a valve flange 5 by screw rod, and the cavity that valve flange 5, valve body 8, seal valve seat 6 are formed is spherical.As shown in Figure 5, R is the radius of a ball, and the ball face sealing face skin of described ball clack 4 is the vulcanized rubber layer.
Described driving mechanism is a man-operated mechanism, is made up of handwheel 1, Worm gear case 2, and handwheel 1 is connected with the worm screw of Worm gear case 2, and worm gear is connected with last eccentric valve shaft 3.The positioning device of Worm gear case is 90 ° a positioning device.Adopt 90 ° of rotating open-closes, be prior art.
Described driving mechanism also can be motor drive mechanism or pneumatic mechanism or the mechanism of surging.Driving mechanism adopts the existing reed valve driving mechanism, is prior art, as number of patent application 02209067, " electronic position-fixing device that electric valve is used " etc.
Working procedure: from opening state to closed condition: clockwise rotate handwheel 1 and Worm gear case 2 is changeed revolve, because worm gear adopts rigidity to connect with last eccentric valve shaft 3, the valve shaft hole of ball clack 4 also adopts rigidity to connect with the underpart of last eccentric valve shaft 3, thereby drive ball clack 4 and rotatablely move as off-centre along last eccentric valve shaft 3, when moving to 90 °, the runner mouth inner seal face of the sealing surface of ball clack 4 and seal valve seat 6 matches and reaches the sealing effect of 1.0Mpa.From closed condition to opening state: rotate counterclockwise handwheel, the sealing surface of ball clack 4 separates with the runner mouth inner seal face of seal valve seat 6, and when rotating 90 °, ball clack 4 is positioned at a side of valve body 8, makes valve wide open.
Embodiment 2:
As Fig. 6, shown in Figure 7, substantially the same manner as Example 1, difference only is: the cavity that described valve body 8 both sides respectively connect a seal valve seat 6,2 side sealing valve seats 6, valve body 8 compositions is spherical.The positioning device of Worm gear case is 180 ° a positioning device.
Be characterized in: have two sealing surfaces of left and right passage, it both can bear the pressure of left channel direction, also can bear the pressure of right channel direction, had played the effect that a valve pushes up two valves.
Working procedure: rotate handwheel and make worm screw drive the worm gear rotation, because worm gear adopts flat key to connect with last eccentric valve shaft 3, the valve shaft hole of ball clack 4 also adopts flat key to connect with the underpart of last eccentric valve shaft 3, thereby drive ball clack 4 and rotatablely move as off-centre along last eccentric valve shaft 3, when moving right to 90 °, the runner mouth inner seal face of the sealing surface of ball clack 4 and seal valve seat 6 matches and reaches the sealing effect of 1.0Mpa to 1.6Mpa.When ball clack moved to 90 ° left, the runner mouth inner seal face of the sealing surface of ball clack 4 and seal valve seat 6 matched and reaches sealing purpose.When ball clack becomes 90 ° with channel centerline, valve wide open.
Embodiment 3:
As Fig. 8, shown in Figure 9, substantially the same manner as Example 1, difference only is: described valve body 8 one sides connect a seal valve seat 6, and the cavity that valve body 8, seal valve seat 1 are formed is spherical.
Working procedure: with embodiment 1.
Claims (7)
1. two eccentric ball-type stopcocks, it comprises driving mechanism, valve body, last eccentric valve shaft, following eccentric valve shaft, lower end cap, driving mechanism is fixedlyed connected with the joint chair (10) of valve body, the upper end of going up eccentric valve shaft (3) is connected with driving mechanism, its lower end is positioned at the cavity of valve body (8), the upper end of eccentric valve shaft (7) is positioned at the cavity of valve body (8) down, and its lower end is connected with valve body (8) by axle sleeve, and is covered mutually by lower end cap (9); The axis hole center line of valve body (8) and valve sealing surface center line off-centre, upward the center line off-centre of the shaft centre line of eccentric valve shaft (3) underpart, following eccentric valve shaft (7) upper end portion and last eccentric valve shaft (3), following eccentric valve shaft (7); It is characterized in that: go up the underpart of eccentric valve shaft (3), the fixedly connected ball clack in upper end portion (4) of following eccentric valve shaft (7), valve body (8) connects 1 to 2 seal valve seat (6) by screw rod (11), the cavity that valve body (8), seal valve seat (6) are formed be spherical, and the runner mouth of seal valve seat (6) is inboard to be sealing surface and to match with the sealing surface of ball clack (4); The U-shaped that described ball clack (4) keeps flat, the U-shaped two ends of ball clack (4) have the valve shaft hole, upward eccentric valve shaft (3), following eccentric valve shaft (7) are connected with two valve shaft holes of ball clack (4) respectively, the bottom outer rim sphere of U-shaped is a sealing surface, the sealing surface of ball clack (4) matches with the runner mouth sealing surface of seal valve seat (6), and the U-shaped two ends valve shaft centerline hole of ball clack (4) is corresponding to the runner mouth inner seal interplanar distance of seal valve seat (6) with the center line of last eccentric valve shaft (3), following eccentric valve shaft (7) to the sealing surface spacing of ball clack (4) bottom outer rim.
2. two eccentric ball-type stopcock according to claim 1, it is characterized in that: described valve body (8) one sides connect a seal valve seat (6), opposite side connects a valve flange (5), and the cavity that valve flange (5), valve body (8), seal valve seat (6) are formed is spherical.
3. two eccentric ball-type stopcock according to claim 1, it is characterized in that: described valve body (8) both sides respectively connect a seal valve seat (6), and the cavity that 2 side sealing valve seats (6), valve body (8) are formed is spherical.
4. two eccentric ball-type stopcock according to claim 1, it is characterized in that: described valve body (8) one sides connect a seal valve seat (6), and the cavity that valve body (8), seal valve seat (1) are formed is spherical.
5. two eccentric ball-type stopcock according to claim 1, it is characterized in that: described driving mechanism is man-operated mechanism or motor drive mechanism or pneumatic mechanism or the mechanism of surging.
6. two eccentric ball-type stopcock according to claim 5, it is characterized in that: described man-operated mechanism is made up of handwheel (1), Worm gear case (2), and handwheel (1) is connected with the worm screw of Worm gear case (2), and worm gear is connected with last eccentric valve shaft (3).
7. two eccentric ball-type stopcock according to claim 1 is characterized in that: the ball face sealing face of described ball clack (4) is outer to be the vulcanized rubber layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03125328 CN1255637C (en) | 2003-08-26 | 2003-08-26 | Dual eccentric spherical cock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03125328 CN1255637C (en) | 2003-08-26 | 2003-08-26 | Dual eccentric spherical cock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1490544A true CN1490544A (en) | 2004-04-21 |
| CN1255637C CN1255637C (en) | 2006-05-10 |
Family
ID=34153020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03125328 Expired - Fee Related CN1255637C (en) | 2003-08-26 | 2003-08-26 | Dual eccentric spherical cock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1255637C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7770867B2 (en) | 2004-11-22 | 2010-08-10 | Dezurik, Inc. | Plug valve with flow area equal to or greater than the flow area of the connected piping |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2940827B1 (en) * | 2009-01-05 | 2014-12-12 | D2Fc | HIGH SPEED DOUBLE DECENTREMENT SHUTTER VALVE, IN PARTICULAR A HYDROELECTRIC CONTROL TURBINE FAUCET |
-
2003
- 2003-08-26 CN CN 03125328 patent/CN1255637C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7770867B2 (en) | 2004-11-22 | 2010-08-10 | Dezurik, Inc. | Plug valve with flow area equal to or greater than the flow area of the connected piping |
| CN101099059B (en) * | 2004-11-22 | 2012-08-08 | 萨特尔水控制公司Dba迪祖瑞克水系统 | Plug valve with improved flow capacity |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1255637C (en) | 2006-05-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060510 Termination date: 20130826 |