CN104132156A - Low-torque plug valve - Google Patents
Low-torque plug valve Download PDFInfo
- Publication number
- CN104132156A CN104132156A CN201410343387.0A CN201410343387A CN104132156A CN 104132156 A CN104132156 A CN 104132156A CN 201410343387 A CN201410343387 A CN 201410343387A CN 104132156 A CN104132156 A CN 104132156A
- Authority
- CN
- China
- Prior art keywords
- connecting sleeve
- ball
- valve
- sleeve
- conversion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/02—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having conical surfaces; Packings therefor
- F16K5/0242—Spindles and actuating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention relates to a low-torque plug valve. The low-torque plug valve comprises a valve body, a valve deck, a plug body, a valve rod, a drive device, a packing gland and a transmission rod. A first connecting sleeve is connected to the lower end of the transmission rod in a sleeved mode. A second connecting sleeve is connected to the upper end of the valve rod in a sleeved mode. A conversion sleeve is arranged outside the first connecting sleeve in a sleeved mode. The first connecting sleeve and the second connecting sleeve are connected. A first ball is arranged between the first connecting sleeve and the conversion sleeve. The first ball is provided with a first position and a second position, wherein when the first ball is located at the first position, the first ball is located between the conversion sleeve and the first connecting sleeve, and when the first ball is located at the second position, the first ball is located between the first connecting sleeve and the transmission rod. A second ball is located between the first connecting sleeve and the second connecting sleeve, wherein the second ball is provided with a first position and a second position, when the second ball is located at the first position, the second ball is located between the first connecting sleeve and the second connecting sleeve, and when the second ball is located at the second position, the second ball is located between the second connecting sleeve and the conversion sleeve. When the low-torque plug valve is opened and closed, the plug body firstly ascends so that the seal surface of the plug body can be separated from the valve body and then rotate by 90 degrees, the plug body descends after the plug body continues to rotate, it is guaranteed that the channel of the plug body and the channel of the valve body are concentric, and in this way, torque reduction caused by contact between the plug body and the valve body is avoided.
Description
Technical field
The present invention relates to a kind of valve, be specifically related to a kind of low moment of torsion stopcock.
Background technique
Conventional stopcock is in the time that switch valve operates, and cock body and valve body sealing surface are permanently connected to friction, causes in valve opening closing process operational torque large.
Summary of the invention
The shortcoming and defect existing for prior art, the invention provides a kind of low moment of torsion stopcock, and it is easy to operate, it is simple, with low cost to process, and has effectively solved the friction of stopcock in switch valve process, has reduced the moment of torsion of stopcock.
The technical solution adopted in the present invention is: a kind of low moment of torsion stopcock, it comprises valve body, valve gap, cock body, valve rod, drive unit, Gland and drive link, cock body and valve body form closeding valve cavity, cock body upper end is fixedly connected with valve rod, described drive unit is connected with drive link, valve gap is fixed on valve body top, described valve rod is connected with the cock body in valve body through valve gap, between described valve gap and valve rod, be provided with filler, described filler presses fixing by Gland, described drive link lower end is socketed the first connecting sleeve, described valve rod upper end is socketed the second connecting sleeve, the outer sheathed conversion sleeve of the first connecting sleeve, described the first connecting sleeve is connected with the second connecting sleeve, between described the first connecting sleeve and conversion sleeve, be provided with the first ball, described the first ball has to be made the primary importance that conversion sleeve and connecting sleeve block mutually and between the first connecting sleeve and drive link, makes the first connecting sleeve and drive link block mutually the second place of interlock between conversion sleeve and the first connecting sleeve, between described the first connecting sleeve and the second connecting sleeve, be provided with the second ball, described the second ball has to be made the first connecting sleeve and the second connecting sleeve block mutually the primary importance of interlock and between the second connecting sleeve and conversion sleeve, makes the second connecting sleeve and conversion sleeve block mutually the second place of interlock between the first connecting sleeve and the second connecting sleeve.
Described conversion sleeve inwall is provided with the first slot, on described the first connecting sleeve, corresponding the first slot place is provided with the first through hole of placing the first ball, the outer wall of described drive link is provided with the first containing groove, and described the first ball has in the primary importance between the first slot and the first through hole and the second place between the first through hole and the first containing groove.
Described the first slot two ends are provided with inversion arc round angle.
Described conversion sleeve inwall is provided with the second slot, corresponding the second slot place of described the second connecting sleeve is provided with the second through hole of placing the second ball, the outer wall of described the first connecting sleeve is provided with the second containing groove, and described the second ball has in the primary importance between the second containing groove and the second through hole and the second place between the second through hole and the second containing groove.
Described the second slot two ends are provided with inversion arc round angle.
Described the first ball and the second ball are symmetrical all the time.
Between drive link and valve gap, be provided with bearing.
Described drive unit is handwheel.
Between described the second connecting sleeve and valve gap, be provided with limiting stopper.
The invention has the beneficial effects as follows: cock body half-twist switch valve again after first promoting cock body sealing surface and valve body being departed from switch valve process, continue rotation and make cock body decline ensure that cock body channel is concentric with valve body channel, this action has avoided contacting of cock body and valve body to alleviate moment.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the valve operating principle schematic diagram of opening of the present invention.
Fig. 3 is pass of the present invention valve operating principle schematic diagram.
Fig. 4 is the A-A cross section view of Fig. 1.
Fig. 5 is the B-B cross section view of Fig. 1.
Fig. 6 is the enlarged view at A place in Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention is further illustrated:
As shown in Fig. 1 and Fig. 6, the invention provides a kind of low moment of torsion stopcock, it comprises valve body 1, valve gap 6, cock body 2, valve rod 3, drive unit, Gland 7 and drive link 4, cock body 2 forms closeding valve cavity with valve body 1, cock body 2 upper ends are fixedly connected with valve rod 3, described drive unit is connected with drive link 4, valve gap 6 is fixed on valve body 1 top, described valve rod 3 is connected with the cock body 2 in valve body 1 through valve gap 6, between described valve gap 6 and valve rod 3, be provided with filler, described filler presses fixing by Gland 7, described drive link 4 lower ends are socketed the first connecting sleeve 8, described valve rod 3 upper ends are socketed the second connecting sleeve 9, the outer sheathed conversion sleeve 10 of the first connecting sleeve 8, described the first connecting sleeve 8 is connected with the second connecting sleeve 9, between described the first connecting sleeve 8 and conversion sleeve 10, be provided with the first ball 11, described the first ball 11 has to be made the primary importance that conversion sleeve 10 and the first connecting sleeve 8 block mutually and between the first connecting sleeve 8 and drive link 4, makes the first connecting sleeve 8 and drive link 4 blocks mutually the second place linking between conversion sleeve 10 and the first connecting sleeve 8, between described the first connecting sleeve 8 and the second connecting sleeve 9, be provided with the second ball 12, described the second ball 12 has to be made the first connecting sleeve 8 and the second connecting sleeve 9 block mutually the primary importance of interlock and between the second connecting sleeve 9 and conversion sleeve 10, makes the second connecting sleeve 9 and conversion sleeve 10 block mutually the second place of interlock between the first connecting sleeve 8 and the second connecting sleeve 9.
As shown in Figure 4, described conversion sleeve 10 inwalls are provided with the first slot 101, on described the first connecting sleeve 8, corresponding the first slot 101 places are provided with the first through hole 81 of placing the first ball 11, the outer wall of described drive link 4 is provided with the first containing groove 41, and described the first ball 11 has in the primary importance between the first slot 101 and the first through hole 81 and the second place between the first through hole 81 and the first containing groove 41.
Described the first slot 101 two ends are provided with inversion arc round angle, are namely provided with R angle.The design at R angle, can be in the time driving valve, make to be placed on the first ball 11 in the first through hole 81 in the time of the interior motion of the first slot 101, enter in the first containing groove 41 along R angle owing to being squeezed, thereby make the first connecting sleeve 8 and the fixing interlock of drive link 4, or in the time closing valve, stressed first slot 101 that slips into along R angle of the first ball 11 that is positioned at the first containing groove 41 and the first connecting sleeve 8 making, realize the disengaging of drive link 4 and the first connecting sleeve 8, make drive link 4 no longer drive the first connecting sleeve 8 to link.
As shown in Figure 5, described conversion sleeve 10 inwalls are provided with the second slot 102, corresponding the second slot 102 places of described the second connecting sleeve 9 are provided with the second through hole 91 of placing the second ball 12, the outer wall of described the first connecting sleeve 8 is provided with the second containing groove 82, and described the second ball 12 has in the primary importance between the second containing groove 82 and the second through hole 91 and the second place between the second through hole 91 and the second slot 102.
Described the second slot 102 two ends are provided with inversion arc round angle, are namely provided with R angle.In the time driving valve, be placed on the second ball 12 in the second holding cavity 82 and the second through hole 91 owing to being squeezed, enter the second holding cavity 82 along R angle, the second connecting sleeve 9 of interlock is originally separated with the first connecting sleeve 8, make the second connecting sleeve 9 motionless, in closing valve, enter along R angle between the second containing groove 82 and the second through hole 91 the second ball 12 between the second slot 102 and the second through hole 91 is stressed, thereby the first connecting sleeve 8 and the second connecting sleeve 9 are linked, close valve operation thereby realize.
As shown in Figure 4 and Figure 5, no matter how how drive link 4, the first connecting sleeve 8, the second connecting sleeve 9 and conversion sleeve 10 4 rotate or are motionless, described the first ball 11 and the second ball 12 are symmetrical all the time, ensure the first connecting sleeve 8, the second connecting sleeve 9 and the conversion sleeve 10 stressed uniformity in valve gap 6 interior rotations, prevent its eccentric rotary, affect the effect that it closes valve and drives valve, this design can effectively ensure that ball remains symmetric arrays, ensures that drive link 4 and valve rod 3 are all the time in central position.
Between drive link 4 and valve gap 6, be provided with bearing 13.
Described drive unit is handwheel 5.
When being provided with limiting stopper 14, the second connecting sleeves 9 between described the second connecting sleeve 9 and valve gap 6 and declining, due to the position-limiting action of limiting stopper 14, the second limited of connecting sleeve 9 14 is spacing, and cock body is pressed in for 2 times in valve body 1, can just coincide.
As shown in Fig. 2 and Fig. 1, from Fig. 2 from top to bottom, the left side is the schematic diagram that the first ball 11 moves, the right is the schematic diagram that the second ball 12 moves, while driving valve, rotate counterclockwise handwheel 5, handwheel 5 drives drive link 4 to rotate, the first connecting sleeve 8, the second connecting sleeve 9 keep motionless, drive link 4 makes the first connecting sleeve 8, the second connecting sleeve 9, valve rod 3 and cock body 2 promote 1/2 pitch by trapezoidal thread in the time of Rotate 180 ° simultaneously, cock body 2 sealing surfaces depart from valve body 1, and now the first holding cavity 41 moves to the first through hole 81 places.Now the first connecting sleeve 8 upper ends touch drive link 4, both location, continue rotation, the first ball 11 between conversion sleeve 10 and the first connecting sleeve 8 enters between drive link 4 and the first connecting sleeve 8 by R angle, namely the first ball 11 enters between the first holding cavity 41 and the first through hole 81, drive link 4 and the first connecting sleeve 8 are become one, then drive link 4 half-twists, drive the first connecting sleeve 8, the second connecting sleeve 9, valve rod 3 and cock body 2 half-twists, now drive link 4 rotates together with the first connecting sleeve 8, continue rotation hand wheel 5, now the frictional force at filler place is greater than trapezoidal thread frictional force the second ball 12 between the first connecting sleeve 8 and the second connecting sleeve 9 is hauled out, namely work as the second holding cavity 82 and the second through hole 91 and arrive the second slot 102 places, because making the second ball 12, the effect of frictional force slips in the second slot 102 along R angle, the first connecting sleeve 8 is separated with the second connecting sleeve 9, make the second connecting sleeve 9 by trapezoidal thread, valve rod 3 and cock body 2 decline cock body passage and valve channel are kept with one heart, now, drive link 4 and the first connecting sleeve 8 are rotated further, and the second connecting sleeve 9 is motionless, and second connecting sleeve 9 separate with the first connecting sleeve 8, now the second connecting sleeve 9, valve rod 3 and cock body 2 fall to compressing.
As shown in Fig. 3 and Fig. 1, from Fig. 3 from top to bottom, the left side is the schematic diagram that the first ball 11 moves, the right is the schematic diagram that the second ball 12 moves, while closing valve, clockwise rotate handwheel 5, handwheel 5 drives drive link 4 and the first connecting sleeve 8 to rotate, the second connecting sleeve 9 is motionless, trapezoidal thread when Rotate 180 ° between the first connecting sleeve 8 and the second connecting sleeve 9 makes the second connecting sleeve 8, valve rod 3 and cock body 2 promote 1/2 pitch and valve body 1 departs from, now the first connecting sleeve 8 lower planes touch the second connecting sleeve 9, then two part location, continue rotation, the second ball 12 between the second connecting sleeve 8 and conversion sleeve 10 enters between the first connecting sleeve 8 and the second connecting sleeve 9, two parts are integrated, the second containing groove 82 moves to the second through hole 91 and the second slot 102 places.Drive link 4 half-twists drive the first connecting sleeve 8, the second connecting sleeve 9, valve rod 3 and cock body 2 half-twists, the first containing groove 41 and the first through hole 81 move to the first slot 101 places, continuing to rotate now the frictional force at filler place is greater than trapezoidal thread frictional force the first ball 11 between the first connecting sleeve 8 and conversion sleeve 10 is hauled out, the first ball 11 slips into the first slot 101 and the first through hole 81 places from the first containing groove 41 and the first through hole 81, thereby two parts are separated, trapezoidal thread between drive link 4 and the first connecting sleeve 8 makes the first connecting sleeve 8, the second connecting sleeve 9, valve rod 3 and cock body 2 1/2 pitch that declines makes valve seal.
Embodiment should not be considered as limitation of the present invention, but any improvement of doing based on spirit of the present invention, all should be within protection scope of the present invention.
Claims (9)
1. one kind low moment of torsion stopcock, it comprises valve body, valve gap, cock body, valve rod, drive unit, Gland and drive link, cock body and valve body form closeding valve cavity, cock body upper end is fixedly connected with valve rod, described drive unit is connected with drive link, valve gap is fixed on valve body top, described valve rod is connected with the cock body in valve body through valve gap, between described valve gap and valve rod, be provided with filler, described filler presses fixing by Gland, it is characterized in that: described drive link lower end is socketed the first connecting sleeve, described valve rod upper end is socketed the second connecting sleeve, the outer sheathed conversion sleeve of the first connecting sleeve, described the first connecting sleeve is connected with the second connecting sleeve, between described the first connecting sleeve and conversion sleeve, be provided with the first ball, described the first ball has to be made the primary importance that conversion sleeve and connecting sleeve block mutually and between the first connecting sleeve and drive link, makes the first connecting sleeve and drive link block mutually the second place of interlock between conversion sleeve and the first connecting sleeve, between described the first connecting sleeve and the second connecting sleeve, be provided with the second ball, described the second ball has to be made the first connecting sleeve and the second connecting sleeve block mutually the primary importance of interlock and between the second connecting sleeve and conversion sleeve, makes the second connecting sleeve and conversion sleeve block mutually the second place of interlock between the first connecting sleeve and the second connecting sleeve.
2. low moment of torsion stopcock according to claim 1, it is characterized in that, described conversion sleeve inwall is provided with the first slot, on described the first connecting sleeve, corresponding the first slot place is provided with the first through hole of placing the first ball, the outer wall of described drive link is provided with the first containing groove, and described the first ball has in the primary importance between the first slot and the first through hole and the second place between the first through hole and the first containing groove.
3. low moment of torsion stopcock according to claim 2, is characterized in that, described the first slot two ends are provided with inversion arc round angle.
4. low moment of torsion stopcock according to claim 1, it is characterized in that, described conversion sleeve inwall is provided with the second slot, corresponding the second slot place of described the second connecting sleeve is provided with the second through hole of placing the second ball, the outer wall of described the first connecting sleeve is provided with the second containing groove, and described the second ball has in the primary importance between the second containing groove and the second through hole and the second place between the second through hole and the second containing groove.
5. low moment of torsion stopcock according to claim 4, is characterized in that, described the second slot two ends are provided with inversion arc round angle.
6. according to the low moment of torsion stopcock described in claim 1,2,3,4 or 5, it is characterized in that, described the first ball and the second ball are symmetrical all the time.
7. low moment of torsion stopcock according to claim 1, is characterized in that, between drive link and valve gap, is provided with bearing.
8. low moment of torsion stopcock according to claim 1, is characterized in that, described drive unit is handwheel.
9. low moment of torsion stopcock according to claim 1, is characterized in that, between described the second connecting sleeve and valve gap, is provided with limiting stopper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410343387.0A CN104132156B (en) | 2014-07-18 | 2014-07-18 | Low moment of torsion stopcock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410343387.0A CN104132156B (en) | 2014-07-18 | 2014-07-18 | Low moment of torsion stopcock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104132156A true CN104132156A (en) | 2014-11-05 |
| CN104132156B CN104132156B (en) | 2016-04-20 |
Family
ID=51804947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410343387.0A Active CN104132156B (en) | 2014-07-18 | 2014-07-18 | Low moment of torsion stopcock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104132156B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065702A (en) * | 2015-07-16 | 2015-11-18 | 浙江福瑞科流控机械有限公司 | Lifting plug valve and control method thereof |
| CN105276206A (en) * | 2015-11-06 | 2016-01-27 | 浙江万龙机械有限公司 | Torque limiting device and valve with same |
| CN106907502A (en) * | 2015-12-22 | 2017-06-30 | 浙江盾安人工环境股份有限公司 | Plug valve |
| CN108895177A (en) * | 2018-09-13 | 2018-11-27 | 洛阳三旋特种阀门有限公司 | A kind of wear resistance ball valve applied to coke drum gasoline adsorption device |
| CN111911647A (en) * | 2020-06-16 | 2020-11-10 | 大高石化科技股份有限公司 | Low-torque low-loss valve |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3477689A (en) * | 1966-09-27 | 1969-11-11 | Hans Berghoefer | Pipe coupling containing a valve |
| CN201218330Y (en) * | 2008-06-20 | 2009-04-08 | 周现华 | Valve with easily replaced valve core and sealing ring, and double-valve control valve composed of common valve and the same |
| CN203948686U (en) * | 2014-07-18 | 2014-11-19 | 凯喜姆阀门有限公司 | Low moment of torsion stopcock |
-
2014
- 2014-07-18 CN CN201410343387.0A patent/CN104132156B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3477689A (en) * | 1966-09-27 | 1969-11-11 | Hans Berghoefer | Pipe coupling containing a valve |
| CN201218330Y (en) * | 2008-06-20 | 2009-04-08 | 周现华 | Valve with easily replaced valve core and sealing ring, and double-valve control valve composed of common valve and the same |
| CN203948686U (en) * | 2014-07-18 | 2014-11-19 | 凯喜姆阀门有限公司 | Low moment of torsion stopcock |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065702A (en) * | 2015-07-16 | 2015-11-18 | 浙江福瑞科流控机械有限公司 | Lifting plug valve and control method thereof |
| CN105276206A (en) * | 2015-11-06 | 2016-01-27 | 浙江万龙机械有限公司 | Torque limiting device and valve with same |
| CN105276206B (en) * | 2015-11-06 | 2017-12-12 | 浙江万龙机械有限公司 | A kind of torque limiting apparatus and the valve with the torque limiting apparatus |
| CN106907502A (en) * | 2015-12-22 | 2017-06-30 | 浙江盾安人工环境股份有限公司 | Plug valve |
| CN108895177A (en) * | 2018-09-13 | 2018-11-27 | 洛阳三旋特种阀门有限公司 | A kind of wear resistance ball valve applied to coke drum gasoline adsorption device |
| CN111911647A (en) * | 2020-06-16 | 2020-11-10 | 大高石化科技股份有限公司 | Low-torque low-loss valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104132156B (en) | 2016-04-20 |
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