CN104110521A - Novel assistant stopper - Google Patents
Novel assistant stopper Download PDFInfo
- Publication number
- CN104110521A CN104110521A CN201410312932.XA CN201410312932A CN104110521A CN 104110521 A CN104110521 A CN 104110521A CN 201410312932 A CN201410312932 A CN 201410312932A CN 104110521 A CN104110521 A CN 104110521A
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- CN
- China
- Prior art keywords
- valve
- piston
- hole
- cylinder
- compensating cylinder
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/14—Actuating devices; Operating means; Releasing devices actuated by fluid for mounting on, or in combination with, hand-actuated valves
- F16K31/143—Actuating devices; Operating means; Releasing devices actuated by fluid for mounting on, or in combination with, hand-actuated valves the fluid acting on a piston
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Driven Valves (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention relates to a novel assistant stopper which comprises a valve body, a valve rod, a valve element, a support, a valve rod nut and a hand wheel. The valve body comprises an inlet end and an outlet end; the valve element is fixed to the bottom end of the valve rod; the support is arranged at the upper end of the valve body; the valve rod nut is arranged in the support and is in linkage with the valve rod; the hand wheel is connected with the valve rod nut in a rotating mode; a piston, a valve cylinder and a balance cylinder are arranged in the valve body; the piston and the valve cylinder are provided with a piston cavity and a valve cylinder cavity respectively, and the piston cavity and the valve cylinder cavity are communicated; the valve element abuts against the inner side of the bottom of the piston; the valve element is provided with a plurality of through holes communicated with the piston cavity; the balance cylinder is arranged in the valve cylinder cavity of the valve cylinder and is internally provided with a balance piston, the balance piston is installed on the valve rod, and the position, above the balance piston, of the balance cylinder is provided with a fluid through hole communicating the valve cylinder cavity with the interior of the balance cylinder. By means of the novel assistant stopper, a large amount of labor is reduced when an operator twists the valve rod nut, the size is decreased, space is saved, fluid in a balance pipeline is prevented from being frozen, and good use performance is maintained.
Description
Technical field
The present invention relates to a kind of improvement of power-assisted cut-off device, be specifically related to the novel power-assisted cut-off device that a kind of valve is easily closed.
Background technique
Power-assisted cut-off device generally comprises valve body, valve rod, spool, support and Stem Mut and handwheel for actuate valve stem, its spool is fixed on valve rod bottom, Stem Mut is arranged in support upper end portion and with valve rod and links, handwheel and Stem Mut are rotationally connected, its working principle is to rotate handwheel Stem Mut band ovable valve stem is moved up and down, thereby valve rod band movable valve plug moves up and down to play the effect of opening/shutting valve.
Because the valve of cut-off high-pressure liquid can be subject to huge hydrodynamic pressure, make comparatively difficulty of throttle down, thereby in prior art, in the valve body of power-assisted cut-off device, be provided with a cavity, in this cavity, being provided with piston is installed on valve rod, and the outside of valve body is provided with equalizing line to be communicated with the intake-outlet of valve cavity and valve body, thereby can make operator in the time reversing Stem Mut, save very large power.But the equalizing line in existing power-assisted cut-off device is to be placed in valve body outside, thereby makes the volume of whole stopper larger, and easily causes the fluid in equalizing line frozen when weather is too cold, thereby affects its usability.
Summary of the invention
In order to overcome the deficiencies in the prior art part, the invention provides the more rational novel power-assisted cut-off device of a kind of structure, the equalizing line that has solved existing power-assisted cut-off device is to be placed in valve body outside, make the volume of whole device larger, and easily cause the fluid in equalizing line frozen when weather is too cold, thereby affect the deficiency of its usability.
Adopt following technological scheme in order to solve the existing problem the present invention of background technique: a kind of novel power-assisted cut-off device, comprise valve body, valve rod, spool, support, Stem Mut and handwheel, described valve body comprises entrance point and outlet end, described spool is fixed on valve rod bottom, described support is arranged at valve body upper end, described Stem Mut is arranged in support and links with valve rod, described handwheel and Stem Mut are rotationally connected, in described valve body, be also provided with piston, valve barrel and compensating cylinder, described piston and valve barrel are respectively equipped with the piston cavity and the valve barrel chamber that are connected, described spool is connected to piston base inner side and spool and is provided with some through holes and communicates with piston cavity, described compensating cylinder is located in the valve barrel chamber of valve barrel, described compensating cylinder upper end is peripheral to connect with valve barrel, in described compensating cylinder, be provided with equalizing piston, described equalizing piston is arranged on valve rod, the top that described compensating cylinder is positioned at equalizing piston is provided with the fluid through-hole that is communicated with valve barrel chamber and balance cylinder interior.
By adopting above-mentioned technological scheme, the valve barrel chamber of the through hole on described spool, the piston cavity of piston, valve barrel and the fluid through-hole of compensating cylinder form the built-in equalizing line of valve body by being communicated with successively, in the time of needs throttle down, turning handwheel declines valve rod band movable valve plug, the fluid of valve body entrance point and outlet end is under pressure and just can is flowed in compensating cylinder equalizing piston is produced to downward pressure by the fluid through-hole of the through hole of spool, piston cavity, valve barrel chamber and compensating cylinder, thereby more laborsaving while reversing handwheel; This novel power-assisted cut-off device not only can make operator in the time reversing handwheel, save very large power, and by the equalizing line of formation is arranged in valve body, be conducive to reduced volume and save space, can also prevent the frozen phenomenon of fluid in equalizing line, to keep good usability.
The further setting of the present invention: be also respectively arranged with upper end gas via-hole and lower end gas via-hole on described compensating cylinder, described upper end gas via-hole is connected by pipe is set with described lower end gas via-hole, is provided with the valve barrel through hole connecting with described upper end gas via-hole on described valve barrel.
By adopting above-mentioned technological scheme, described lower end gas via-hole, pipe, upper end gas via-hole and valve barrel through hole are communicated with successively, thereby in the time that equalizing piston moves down, the air of its below will discharge by described lower end gas via-hole, pipe, upper end gas via-hole, valve barrel through hole successively, the air pressure that equalizing piston is subject to upwards reduces, and is conducive to equalizing piston and better assists valve rod to move down.
The further setting of the present invention: be provided with bonnet flange between described valve body and support, described bonnet flange bottom arranges a flange gasket.
By adopting above-mentioned technological scheme, make valve body more reasonable with being connected of support, thereby make the seal of whole stopper better, also firm and durable more.
The further setting of the present invention: described compensating cylinder and pipe are stainless steel and make.
By adopting above-mentioned technological scheme, its compensating cylinder and pipe self will be more firm, and impact resistance is stronger, and the mobility that is simultaneously conducive to fluid is better.
The further setting of the present invention: the two-port of described pipe is connected with upper end through hole and the lower end through hole of compensating cylinder by the mode of welding.
By adopting above-mentioned technological scheme, pipe two ends will be more firm with upper end gas via-hole and being connected of lower end gas via-hole of compensating cylinder, be conducive to fluid and will keep good circulation, to can keep good usability.
Beneficial effect of the present invention is: this novel power-assisted cut-off device is by being arranged at valve inner by the equalizing line of formation, not only can make operator in the time reversing Stem Mut, save very large power, and dwindle volume and saved space, can also prevent the frozen phenomenon of fluid in equalizing line, to keep good usability simultaneously.
Brief description of the drawings
Fig. 1 is the structural representation of the novel power-assisted cut-off device of the embodiment of the present invention.
Embodiment
In order to deepen the understanding of the present invention, below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, and this embodiment only, for explaining the present invention, does not form limiting the scope of the present invention.
As shown in Figure 1, the novel power-assisted cut-off device of the embodiment of the present invention, comprise valve body 1, valve rod 2, spool 3, support 4, Stem Mut 5 and handwheel 6, its valve body 1 comprises entrance point 11 and outlet end 12, spool 3 is fixed on valve rod 2 bottoms, support 4 is arranged at valve body 1 upper end, Stem Mut 5 is arranged in support 4 and links with valve rod 2, handwheel 6 is rotationally connected with Stem Mut 5, further, in valve body 1, be also provided with piston 7, valve barrel 8 and compensating cylinder 9, its piston 7 and valve barrel 8 are respectively equipped with the piston cavity 71 and the valve barrel chamber 81 that are connected, spool 3 is connected to piston 7 bottom inside and spool 3 and is provided with some through holes 31 and communicates with piston cavity 71, compensating cylinder 9 is located in the valve barrel chamber 81 of valve barrel 8, and compensating cylinder 9 upper ends are peripheral to connect with valve barrel 8, further, in compensating cylinder 8, be provided with equalizing piston 10, this equalizing piston 10 is arranged on valve rod 2, the top that compensating cylinder 9 is positioned at equalizing piston 10 is provided with the fluid through-hole 91 that is communicated with valve barrel chamber 81 and compensating cylinder 9 inside.Through hole 31 on spool 3 like this, the piston cavity 71 of piston 7, the valve barrel chamber 81 of valve barrel 8 and the fluid through-hole 91 of compensating cylinder 9 form the built-in equalizing line of valve body 1 by being communicated with successively, in the time of needs throttle down, turning handwheel 6 makes valve rod 2 be with movable valve plug 3 to decline, the fluid of valve body 1 entrance point 11 and outlet end 12 is under pressure just can be by the through hole of spool 3 31, piston cavity 71, the fluid through-hole 91 of valve barrel chamber 81 and compensating cylinder 9 flows into that compensating cylinder 9 is interior produces downward pressure to equalizing piston 10, thereby more laborsaving while reversing handwheel 6, and because the equalizing line forming is arranged in valve body 1, be conducive to reduced volume and save space, can also prevent the frozen phenomenon of fluid in equalizing line, to keep good usability.
In the present embodiment, on compensating cylinder 9, be also respectively arranged with upper end gas via-hole 92 and lower end gas via-hole 93, its upper end gas via-hole 92 is connected by pipe 13 with lower end gas via-hole 93, and on valve barrel 8, is provided with the valve barrel through hole 82 connecting with upper end gas via-hole 92.Lower end gas via-hole 93, pipe 13, upper end gas via-hole 92 and valve barrel through hole 82 are communicated with successively like this, thereby in the time that equalizing piston 10 moves down, the air of its below will discharge by lower end gas via-hole 93, pipe 13, upper end gas via-hole 92, valve barrel through hole 82 successively, the air pressure that equalizing piston 10 is subject to upwards reduces, and better assists valve rod 2 to move down thereby be conducive to equalizing piston 10.
In the present embodiment, between valve body 1 and support 4, be provided with bonnet flange 14, these bonnet flange 14 bottoms arrange a flange gasket 15, and valve body 1 is more reasonable with being connected of support 4 like this, thereby makes the seal of whole device better, also firm and durable more.
In the present embodiment, compensating cylinder 9 and pipe 13 are stainless steel and make, and the two-port of pipe 13 is connected with upper end gas via-hole 92 and the lower end gas via-hole 93 of compensating cylinder 9 by the mode of welding, compensating cylinder 9 and pipe 13 self is more firm, shock-resistant like this, and the joint of pipe 13 two ends and compensating cylinder 9 is also more firm, make fluid can keep good circulation, thereby can keep good usability.
Claims (5)
1. a novel power-assisted cut-off device, comprise valve body, valve rod, spool, support, Stem Mut and handwheel, described valve body comprises entrance point and outlet end, described spool is fixed on valve rod bottom, described support is arranged at valve body upper end, described Stem Mut is arranged in support and links with valve rod, described handwheel and Stem Mut are rotationally connected, it is characterized in that: in described valve body, be also provided with piston, valve barrel and compensating cylinder, described piston and valve barrel are respectively equipped with the piston cavity and the valve barrel chamber that are connected, described spool is connected to piston base inner side and spool and is provided with some through holes and communicates with described piston cavity, described compensating cylinder is located in the valve barrel chamber of described valve barrel, described compensating cylinder upper end is peripheral to connect with valve barrel, in described compensating cylinder, be provided with equalizing piston, described equalizing piston is arranged on valve rod, the top that described compensating cylinder is positioned at equalizing piston is provided with the fluid through-hole that is communicated with valve barrel chamber and balance cylinder interior.
2. novel power-assisted cut-off device according to claim 1, it is characterized in that: on described compensating cylinder, be also respectively arranged with upper end gas via-hole and lower end gas via-hole, described upper end gas via-hole is connected by pipe is set with described lower end gas via-hole, is provided with the valve barrel through hole connecting with described upper end gas via-hole on described valve barrel.
3. novel power-assisted cut-off device according to claim 1, is characterized in that: between described valve body and support, be provided with bonnet flange, described bonnet flange bottom arranges a flange gasket.
4. novel power-assisted cut-off device according to claim 2, is characterized in that: described compensating cylinder and pipe are stainless steel and make.
5. novel power-assisted cut-off device according to claim 2, is characterized in that: the two-port of described pipe is connected with upper end gas via-hole and the lower end gas via-hole of compensating cylinder by the mode of welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410312932.XA CN104110521B (en) | 2014-06-30 | 2014-06-30 | Novel power-assisted cut-off device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410312932.XA CN104110521B (en) | 2014-06-30 | 2014-06-30 | Novel power-assisted cut-off device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104110521A true CN104110521A (en) | 2014-10-22 |
| CN104110521B CN104110521B (en) | 2016-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410312932.XA Active CN104110521B (en) | 2014-06-30 | 2014-06-30 | Novel power-assisted cut-off device |
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| CN (1) | CN104110521B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3712477A1 (en) * | 1986-04-16 | 1987-10-22 | Boge Gmbh | Hydraulic, adjustable shock absorber |
| CN2169740Y (en) * | 1993-04-17 | 1994-06-22 | 徐特强 | Power saving mass flow switch valve without leakage |
| CN203431192U (en) * | 2013-09-09 | 2014-02-12 | 大英县大科机械设备制造有限公司 | Low-lift balance type program control valve |
| CN203594863U (en) * | 2013-12-12 | 2014-05-14 | 浙江美德机械有限公司 | Assistance type gate valve |
| CN203594797U (en) * | 2013-12-12 | 2014-05-14 | 浙江美德机械有限公司 | Telescopic cylinder power-assisted stop valve |
| CN203940083U (en) * | 2014-06-30 | 2014-11-12 | 浙江美德机械有限公司 | Novel power-assisted cut-off device |
-
2014
- 2014-06-30 CN CN201410312932.XA patent/CN104110521B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3712477A1 (en) * | 1986-04-16 | 1987-10-22 | Boge Gmbh | Hydraulic, adjustable shock absorber |
| CN2169740Y (en) * | 1993-04-17 | 1994-06-22 | 徐特强 | Power saving mass flow switch valve without leakage |
| CN203431192U (en) * | 2013-09-09 | 2014-02-12 | 大英县大科机械设备制造有限公司 | Low-lift balance type program control valve |
| CN203594863U (en) * | 2013-12-12 | 2014-05-14 | 浙江美德机械有限公司 | Assistance type gate valve |
| CN203594797U (en) * | 2013-12-12 | 2014-05-14 | 浙江美德机械有限公司 | Telescopic cylinder power-assisted stop valve |
| CN203940083U (en) * | 2014-06-30 | 2014-11-12 | 浙江美德机械有限公司 | Novel power-assisted cut-off device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104110521B (en) | 2016-08-24 |
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| C14 | Grant of patent or utility model | ||
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