CN104110521B - Novel power-assisted cut-off device - Google Patents
Novel power-assisted cut-off device Download PDFInfo
- Publication number
- CN104110521B CN104110521B CN201410312932.XA CN201410312932A CN104110521B CN 104110521 B CN104110521 B CN 104110521B CN 201410312932 A CN201410312932 A CN 201410312932A CN 104110521 B CN104110521 B CN 104110521B
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- China
- Prior art keywords
- valve
- hole
- compensating cylinder
- piston
- spool
- 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.)
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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
-
- 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
Abstract
The present invention relates to a kind of novel power-assisted cut-off device, including valve body, valve rod, spool, support, valve stem nut and hands wheel, valve body includes entrance point and the port of export, spool is fixed on valve rod bottom, support is arranged at valve body upper end, link in valve stem nut is arranged at support and with valve rod, handwheel is rotationally connected with valve stem nut, piston it is additionally provided with in valve body, valve barrel and compensating cylinder, piston is respectively equipped with the plunger shaft being connected and valve barrel chamber with valve barrel, spool is connected to inside piston base and spool is provided with some through holes and communicates with plunger shaft, compensating cylinder is located at the valve barrel intracavity of valve barrel, dummy piston it is provided with in compensating cylinder, dummy piston is arranged on valve rod, compensating cylinder is positioned at the fluid through-hole being provided above connecting valve barrel chamber with balance cylinder interior of dummy piston.The present invention is possible not only to make operator to eliminate the biggest power when reversing valve stem nut, and reduces volume and save space, prevents the frozen phenomenon of the fluid in equalizing line, to keep good serviceability.
Description
Technical field
The present invention relates to the improvement of a kind of power-assisted cut-off device, be specifically related to that a kind of valve easily closes is novel
Power-assisted cut-off device.
Background technology
Power-assisted cut-off device generally comprises valve body, valve rod, spool, support and for driving the valve rod of valve rod
Nut and handwheel, its spool is fixed on valve rod bottom, and valve stem nut is arranged in pedestal upper end portion and and valve
Bar links, and handwheel is rotationally connected with valve stem nut, and its operation principle is to rotate handwheel to make valve stem nut drive
Valve rod moves up and down, thus valve rod band movable valve plug moves up and down with the effect playing opening/shutting valve.
Owing to the valve of cut-off high-pressure fluid can be turned off valve the most difficult by huge fluid pressure,
Thus in prior art, in the valve body of power-assisted cut-off device, it is provided with a cavity, it is provided with piston in this cavity
It is installed on valve rod, and the outside of valve body is provided with the equalizing line Inlet and outlet water with connection valve cavity with valve body
Mouthful, such that it is able to make operator eliminate the biggest power when reversing valve stem nut.But, existing help
Equalizing line in power stopper is placed in outside valve body, so that the volume of whole stopper is relatively big,
And when the coldest fluid being easily caused in equalizing line of weather is frozen, thus affect its serviceability.
Summary of the invention
In place of overcoming the deficiencies in the prior art, the invention provides a kind of structure the most novel
Power-assisted cut-off device, the equalizing line solving existing power-assisted cut-off device is placed in outside valve body, makes whole
The volume of individual device is relatively big, and when the coldest fluid being easily caused in equalizing line of weather is frozen, thus shadow
Ring the weak point of its serviceability.
In order to the problem solved existing for background technology present invention employs techniques below scheme: a kind of novel
Power-assisted cut-off device, including valve body, valve rod, spool, support, valve stem nut and handwheel, described valve body bag
Including entrance point and the port of export, described spool is fixed on valve rod bottom, and described support is arranged at valve body upper end,
Linking in described valve stem nut is arranged at support and with valve rod, described handwheel is rotationally connected with valve stem nut,
Being additionally provided with piston, valve barrel and compensating cylinder in described valve body, described piston is respectively equipped with valve barrel and to be connected
Plunger shaft and valve barrel chamber, described spool is connected to inside piston base and spool is provided with some through holes and work
Plug chamber communicates, and described compensating cylinder is located at the valve barrel intracavity of valve barrel, periphery, described compensating cylinder upper end and valve barrel
Abutting against, be provided with dummy piston in described compensating cylinder, described dummy piston is arranged on valve rod, described
Compensating cylinder is positioned at the fluid through-hole being provided above connecting valve barrel chamber with balance cylinder interior of dummy piston.
By using above-mentioned technical scheme, through hole on described spool, the plunger shaft of piston, valve barrel
The fluid through-hole of valve barrel chamber and compensating cylinder forms, by being sequentially communicated, the equalizing line that valve body is built-in, works as needs
When closing valve, turning handwheel and make valve rod band movable valve plug decline, the fluid of valve body entrance point and the port of export is subject to
Compensating cylinder will be flowed into by the fluid through-hole of the through hole of spool, plunger shaft, valve barrel chamber and compensating cylinder to pressure
The interior pressure downward to dummy piston generation, thus the most laborsaving when reversing handwheel；This novel power-assisted is ended
Device is possible not only to make operator eliminate the biggest power when reversing handwheel, and by flat by formed
Weighing apparatus pipeline is arranged in valve body, is conducive to reducing volume and saves space, it is also possible to prevents in equalizing line
The frozen phenomenon of fluid, to keep good serviceability.
The further setting of the present invention: be also respectively provided with on described compensating cylinder upper end gas via-hole and under
End gas via-hole, described upper end gas via-hole is connected by arranging pipe with described lower end gas via-hole
Logical, described valve barrel is provided with the valve barrel through hole through with described upper end gas via-hole.
By using above-mentioned technical scheme, described lower end gas via-hole, pipe, upper end gas via-hole
And valve barrel through hole is sequentially communicated, thus when dummy piston moves down, air below will lead to successively
Cross described lower end gas via-hole, pipe, upper end gas via-hole, valve barrel through hole discharge, and make balance live
Plug is reduced by air pressure upwards, and beneficially dummy piston preferably assists valve rod to move down.
The further setting of the present invention: be provided with bonnet flange, described valve gap between described valve body and support
Flange bottom arranges a flange gasket.
By using above-mentioned technical scheme, make valve body the most reasonable with the connection of support, so that whole
The seal of stopper is more preferable, the most more firm and durable.
The further setting of the present invention: described compensating cylinder and pipe are rustless steel and make.
By using above-mentioned technical scheme, its compensating cylinder and pipe self will be the most firm, resistance to impact
Higher, the most beneficially mobility of fluid is more preferable.
The further setting of the present invention: the two-port of described pipe upper with compensating cylinder by the way of welding
End through hole and lower end through hole connect.
By using upper end gas via-hole and the lower end gas of above-mentioned technical scheme, pipe two ends and compensating cylinder
The connection of body through hole will be the most firm, and beneficially fluid keeps good circulation, so as to keep very
Good serviceability.
The beneficial effects of the present invention is: this novel power-assisted cut-off device is by setting the equalizing line of formation
It is placed in valve inner, is possible not only to make operator eliminate the biggest power when reversing valve stem nut, and
Reduce volume and save space, the frozen phenomenon of fluid being simultaneously also prevented from equalizing line,
With the serviceability that holding is good.
Accompanying drawing explanation
Fig. 1 is the structural representation of the novel power-assisted cut-off device of the embodiment of the present invention.
Detailed description of the invention
In order to deepen the understanding of the present invention, below in conjunction with embodiment and accompanying drawing, the present invention is made further
Describing in detail, this embodiment is only used for explaining the present invention, is not intended that limiting the scope of the present invention.
As it is shown in figure 1, the novel power-assisted cut-off device of the embodiment of the present invention, including valve body 1, valve rod 2,
Spool 3, support 4, valve stem nut 5 and handwheel 6, its valve body 1 includes entrance point 11 and the port of export 12,
Spool 3 is fixed on valve rod 2 bottom, and support 4 is arranged at valve body 1 upper end, and valve stem nut 5 is arranged at and props up
In frame 4 and linking with valve rod 2, handwheel 6 is rotationally connected with valve stem nut 5, further, at valve body 1
Inside being additionally provided with piston 7, valve barrel 8 and compensating cylinder 9, its piston 7 is respectively equipped with, with valve barrel 8, the work being connected
Plug chamber 71 and valve barrel chamber 81, spool 3 is connected to piston 7 bottom inside and spool 3 is provided with some through holes
31 communicate with plunger shaft 71, and compensating cylinder 9 is located in the valve barrel chamber 81 of valve barrel 8, and compensating cylinder 9 upper end
Periphery abuts against with valve barrel 8, further, is provided with dummy piston 10 in compensating cylinder 8, and this balance is lived
Plug 10 is arranged on valve rod 2, compensating cylinder 9 be positioned at dummy piston 10 be provided above connect valve barrel chamber
81 and compensating cylinder 9 within fluid through-hole 91.The so through hole 31 on spool 3, plunger shaft of piston 7
71, the valve barrel chamber 81 of valve barrel 8 and the fluid through-hole 91 of compensating cylinder 9 will be sequentially communicated formation valve body 1
Built-in equalizing line, when valve closed by needs, turns handwheel 6 and makes valve rod 2 band movable valve plug 3 decline,
The fluid of valve body 1 entrance point 11 and the port of export 12 is under pressure will be by the through hole 31 of spool 3, piston
Dummy piston 10 is produced in flowing into compensating cylinder 9 by the fluid through-hole 91 of chamber 71, valve barrel chamber 81 and compensating cylinder 9
Raw downward pressure, thus the most laborsaving when reversing handwheel 6, and owing to the equalizing line of formation is arranged at
In valve body 1, be conducive to reducing volume and save space, it is also possible to prevent the fluid in equalizing line frozen
Phenomenon, to keep good serviceability.
In the present embodiment, compensating cylinder 9 is also respectively provided 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
It is provided with the valve barrel through hole 82 through with upper end gas via-hole 92.So lower end gas via-hole 93, pipe
13, upper end gas via-hole 92 and valve barrel through hole 82 are sequentially communicated, thus when dummy piston 10 moves down
Time, air below will pass sequentially through lower end gas via-hole 93, pipe 13, upper end gas via-hole 92,
Valve barrel through hole 82 discharges, and makes dummy piston 10 be reduced by air pressure upwards, thus is conducive to flat
Weighing apparatus piston 10 preferably assists valve rod 2 to move down.
In the present embodiment, between valve body 1 and support 4, it is provided with bonnet flange 14, this bonnet flange 14
Bottom arranges a flange gasket 15, and such valve body 1 is the most reasonable with the connection of support 4, so that whole
The seal of device is more preferable, the most more firm and durable.
In the present embodiment, compensating cylinder 9 and pipe 13 are rustless steel and make, and the two-port of pipe 13
It is connected with upper end gas via-hole 92 and the lower end gas via-hole 93 of compensating cylinder 9 by the way of welding, this
Sample compensating cylinder 9 and the most firm, the impact resistance of pipe 13 self, and pipe 13 two ends and compensating cylinder 9
Junction is the most firm, enables a fluid to keep good circulation such that it is able to keep well making
Use performance.
Claims (4)
1. a novel power-assisted cut-off device, including valve body, valve rod, spool, support, valve
Stem nut and handwheel, described valve body includes that entrance point and the port of export, described spool are fixed on valve rod
Bottom, described support is arranged at valve body upper end, and described valve stem nut is arranged in support and and valve
Bar links, and described handwheel is rotationally connected with valve stem nut, it is characterised in that: in described valve body also
Being provided with piston, valve barrel and compensating cylinder, described piston is respectively equipped with the plunger shaft being connected with valve barrel
With valve barrel chamber, described spool is connected to inside piston base and spool is provided with some through holes and institute
Stating plunger shaft to communicate, described compensating cylinder is located at the valve barrel intracavity of described valve barrel, described compensating cylinder
Periphery, upper end abuts against with valve barrel, is provided with dummy piston in described compensating cylinder, and described balance is lived
Plug be arranged on valve rod, described compensating cylinder be positioned at dummy piston be provided above connect valve barrel chamber
With the fluid through-hole of balance cylinder interior, described compensating cylinder is also respectively provided with upper end gas and leads to
Hole and lower end gas via-hole, described upper end gas via-hole passes through with described lower end gas via-hole
Arrange pipe to be connected, described valve barrel is provided with the valve barrel through with described upper end gas via-hole
Through hole.
Novel power-assisted cut-off device the most according to claim 1, it is characterised in that: institute
Stating and be provided with bonnet flange between valve body and support, described bonnet flange bottom arranges a flange gasket
Sheet.
Novel power-assisted cut-off device the most according to claim 1, it is characterised in that: institute
The compensating cylinder stated and pipe are rustless steel and make.
Novel power-assisted cut-off device the most according to claim 1, it is characterised in that: institute
State the two-port of pipe by the way of welding with upper end gas via-hole and the lower end gas of compensating cylinder
Body through hole connects.
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 CN104110521A (en) | 2014-10-22 |
| CN104110521B true CN104110521B (en) | 2016-08-24 |
Family
ID=51707441
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 |
Country Status (1)
| Country | Link |
|---|---|
| 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 |
| CN203594797U (en) * | 2013-12-12 | 2014-05-14 | 浙江美德机械有限公司 | Telescopic cylinder power-assisted stop valve |
| CN203594863U (en) * | 2013-12-12 | 2014-05-14 | 浙江美德机械有限公司 | Assistance type gate 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 |
| CN203594797U (en) * | 2013-12-12 | 2014-05-14 | 浙江美德机械有限公司 | Telescopic cylinder power-assisted stop valve |
| CN203594863U (en) * | 2013-12-12 | 2014-05-14 | 浙江美德机械有限公司 | Assistance type gate 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 |
|---|---|
| CN104110521A (en) | 2014-10-22 |
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