CN203431210U - Bidirectional balancing type stop valve - Google Patents
Bidirectional balancing type stop valve Download PDFInfo
- Publication number
- CN203431210U CN203431210U CN201320556732.XU CN201320556732U CN203431210U CN 203431210 U CN203431210 U CN 203431210U CN 201320556732 U CN201320556732 U CN 201320556732U CN 203431210 U CN203431210 U CN 203431210U
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- China
- Prior art keywords
- valve
- valve rod
- spool
- cylinder body
- cavity
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- Expired - Fee Related
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Abstract
The utility model discloses a bidirectional balancing type stop valve. The bidirectional balancing type stop valve comprises a valve body, a valve core, a valve rod, a piston, a valve core and a bush. The valve body and a cylinder body are fixed onto the upper end surface and the lower end surface of the valve cover respectively; the upper end of the valve rod is supported at the top of the cylinder body, and the piston is fixed onto the portion of the valve rod, which is disposed inside the cylinder body; the lower end of the valve rod penetrates the valve cover and is arranged inside the middle cavity of the valve body and mounted inside a slot of the valve core; the bush is snapped inside the valve body, and the upper end of the valve core is snapped inside the bush and forms a closed upper cavity inside the middle cavity along with the valve cover and the bush; the valve core is in a dumbbell shape and is provided with a balancing hole communicated with the upper cavity. According to the bidirectional balancing type stop valve, the balancing hole formed in the valve core and communicated with the upper cavity can transmit lower cavity pressure to the upper cavity, so that the lower cavity pressure born by the valve core can be balanced by the upper cavity pressure, further the utilization pressure difference of the valve can be improved; the operation force during opening and closing of the valve can be small, so that an executing mechanism can be greatly simplified, the whole size of the valve can be reduced, further energy consumption of auxiliary units of pneumatic valves, hydraulic valves and the like can be reduced.
Description
Technical field
The utility model relates to valve technology field, is specifically related to a kind of bidirectional balanced formula stop valve that reduces valve opening and closing action required power by valve internal self-balance structure is set.
Background technique
The moving stop valve of conventional gas (liquid) is mainly partly comprised of gas (hydraulic pressure) cylinder part, stuffing box holder part, valve body spool, gas (hydraulic pressure) the cylinder cavity of resorption that the switching by stop valve of the instrument air with pressure of common gas (liquid) program control stop valve or hydraulic oil enters the moving actuator of gas (liquid) promotes piston to upper (lower) motion, piston driving valve rod, valve rod is carried (pushing) spool makes sequencing valve open or close.The pressure difference being subject to due to spool front-end and back-end is larger, and stop valve is when closing, and spool, under cavity of resorption active force, need to act on spool with larger steering force, just can make valve reach completely and close, and provide spool required sealing force.Same, if be subject to the pressure of rear end when sequencing valve is opened, also need very large valve rod pulling force to carry out poppet valve core, Open valve.
Model utility content
For above-mentioned deficiency of the prior art, the stop valve that the bidirectional balanced formula stop valve that the utility model provides has solved prior art needs larger steering force could realize valve opening and the problem of closing.
In order to reach foregoing invention object, the technical solution adopted in the utility model is: a kind of bidirectional balanced formula stop valve is provided, it comprises valve body, valve gap, valve rod and piston, and described valve gap is fixed together by bolt group and valve body, and the upper end of valve gap is provided with cylinder body by bolt group; Valve rod upper end is supported on cylinder body top, and piston is fixed on valve rod by locking nut and is positioned at that section of cylinder body; It is characterized in that:
Also comprise spool and lining, described valve rod lower end is arranged in the lumen of valve body and is arranged in the groove on spool through valve gap; Described lining is installed in valve body, and spool upper end is installed in lining and in valve body lumen, forms an airtight epicoele with valve gap and lining; Described spool is dumbbell-like shape, and on it, is provided with an equalizing orifice being communicated with epicoele.
Further, the groove of described spool is provided with internal thread, is combined with a valve clack cover between valve gap and valve rod.
Further, cambered surface is arranged in the lower end surface of described valve rod, and is provided with a spacer between valve rod lower end surface and groove inner bottom surface.
Further, in the step of described valve rod lower end, be arranged with the divided ring contacting with valve clack cover.
The beneficial effects of the utility model are: the spool upper end of bidirectional balanced formula stop valve is installed in lining and in lumen, forms an airtight epicoele with valve gap and lining, the equalizing orifice being communicated with epicoele of offering on spool, lower cavity pressure is passed to epicoele, the suffered lower cavity pressure of spool is fallen by the pressure balance of epicoele, the pressure medium of same Way out is also balance, the use pressure reduction of valve is improved, valve opening and the steering force needing while closing are less, thereby reduced widely actuator, valve overall volume is dwindled, thereby saved gas, the auxiliary device energy consumption of valve such as surge.
Accompanying drawing explanation
Fig. 1 is the structural representation of bidirectional balanced formula stop valve.
Wherein, 1, valve body; 2, cavity of resorption; 3, spool; 31, equalizing orifice; 4, spacer; 5, valve clack cover; 6, valve rod; 7, valve gap; 8, valve bonnet seal cover; 9, valve stem seal cover; 10, piston; 11, cylinder body; 12, upper sleeve gasket; 13, dust ring; 14, guard shield; 15, solenoid valve; 16, take over assembly; 17, leak hunting aperture; 18, baffler; 19, epicoele; 20, lining; 21, lumen.
Embodiment
As shown in Figure 1, this bidirectional balanced formula stop valve comprises valve body 1, valve gap 7, valve rod 6, spool 3, lining 20 and piston 10, and described valve gap 7 is fixed together by bolt group and valve body 1, and the upper end of valve gap 7 is provided with cylinder body 11 by bolt group; Described valve rod 6 one end are arranged in the lumen 21 of valve body 1 and are arranged in the groove on spool 3 through valve gap 7, the other end guide support is on cylinder body 11 tops, and piston 10 is fixed on valve rod 6 by locking nut and is positioned at cylinder body 11 those sections; Described valve rod 6 is integral type structure, and it can drive piston 10 and spool 3 to move up and down simultaneously, and described cylinder body 11 is located along the same line with the medial axis of valve gap 7.
In order to guarantee that spool 3 is stably fixed on valve rod 6, the groove of spool 3 is provided with internal thread, and clamp divided ring in valve rod 6 lower end steps after, screws valve clack cover 5 and be fixed.
Cambered surface is arranged in the lower end surface of valve rod 6, and is provided with a spacer 4 between valve rod 6 lower end surfaces and groove inner bottom surface, and spacer 4 can self adaption be adjusted the contact position of valve rod 6 and spool 3.
On the end face of cylinder body 11, by solenoid valve 15, be connected with an adapter assembly 16 communicating with cylinder body 11, take over the other end of assembly 16 and cylinder body 11 chambers of piston 10 lower ends and communicate, take over assembly 16 for instrument air with pressure or hydraulic oil are imported to cylinder body 11.
In order to guarantee the sealing between valve gap 7 and valve rod 6, between valve gap 7 and valve rod 6, be provided with from the bottom to top valve bonnet seal cover 8 and valve stem seal cover 9, the outer rim of valve bonnet seal cover 8 and valve stem seal cover 9 is all bolted on valve gap 7; In order further to guarantee the sealing between valve gap 7 and valve rod 6, between valve bonnet seal cover 8 and valve rod 6 and valve gap 7 and between valve stem seal cover 9 and valve rod 6 and valve gap 7, be provided with O shape circle; In order to detect the sealing of valve bonnet seal cover 8, offer a bird-caging annular groove thereon, make again bird-caging annular groove be communicated with the leak hunting aperture 17 on valve gap 7, the leak hunting aperture 17 connecting can provide auxiliary seal effect, also can be used for blowing the temperature that cooling water reduces valve rod 6 and valve bonnet seal cover 8, for avoiding the poor sealing of valve bonnet seal cover 8 to cause gas to overflow by leak hunting aperture 17, so be provided with a baffler 18 in the outlet of leak hunting aperture 17.
Between valve rod 6 and cylinder body 11 tops, be also provided with upper sleeve gasket 12; Between upper sleeve gasket 12 and cylinder body 11, between upper sleeve gasket 12 and valve rod 6, between piston 10 and valve rod 6 and be provided with O shape circle between piston 10 and cylinder body 11; In order slowing down when piston 10 liftings put in place, upper sleeve gasket 12 to be impacted, on the locking nut of fastening piston 10, bumper to be installed; Valve rod 6 ends of cylinder body 11 end faces are provided with a guard shield 15 by dust ring 13, and dust ring 13 can prevent that dust from moving into upper sleeve gasket 12 inside with valve rod 6.
Although by reference to the accompanying drawings embodiment of the present utility model is described in detail, should not be construed as the restriction to the protection domain of this patent.In the described scope of claims, the various modifications that those skilled in the art can make without creative work and distortion still belong to the protection domain of this patent.
Claims (5)
1. a bidirectional balanced formula stop valve, comprises valve body, valve gap, valve rod and piston, and described valve gap is fixed together by bolt group and valve body, and the upper end of valve gap is provided with cylinder body by bolt group; Valve rod upper end is supported on cylinder body top, and piston is fixed on valve rod by locking nut and is positioned at that section of cylinder body; It is characterized in that:
Also comprise spool and lining, described valve rod lower end is arranged in the lumen of valve body and is arranged in the groove on spool through valve gap; Described lining is installed in valve body, and spool upper end is installed in lining and in lumen, forms an airtight epicoele with valve gap and lining; Described spool is dumbbell-like shape, and on it, is provided with an equalizing orifice being communicated with epicoele.
2. bidirectional balanced formula stop valve according to claim 1, is characterized in that: the groove of described spool is provided with internal thread, is combined with a valve clack cover between spool and valve rod.
3. bidirectional balanced formula stop valve according to claim 1, is characterized in that: cambered surface is arranged in the lower end surface of described valve rod, and is provided with a spacer between valve rod lower end surface and groove inner bottom surface.
4. bidirectional balanced formula stop valve according to claim 2, is characterized in that: in the step of described valve rod lower end, be arranged with the divided ring contacting with valve clack cover.
5. bidirectional balanced formula stop valve according to claim 1, is characterized in that: described cylinder body is cylinder or oil hydraulic cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320556732.XU CN203431210U (en) | 2013-09-09 | 2013-09-09 | Bidirectional balancing type stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320556732.XU CN203431210U (en) | 2013-09-09 | 2013-09-09 | Bidirectional balancing type stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203431210U true CN203431210U (en) | 2014-02-12 |
Family
ID=50060247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320556732.XU Expired - Fee Related CN203431210U (en) | 2013-09-09 | 2013-09-09 | Bidirectional balancing type stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203431210U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791501A (en) * | 2015-04-29 | 2015-07-22 | 中国船舶重工集团公司第七二五研究所 | Bi-directional pressure self-balancing type stop valve |
| CN105889529A (en) * | 2016-06-30 | 2016-08-24 | 纽威石油设备（苏州）有限公司 | Plunger type well drilling throttle valve |
| CN107131353A (en) * | 2017-04-25 | 2017-09-05 | 中国船舶重工集团公司第七二五研究所 | A kind of two-way low operational torque high-pressure stop valve |
-
2013
- 2013-09-09 CN CN201320556732.XU patent/CN203431210U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791501A (en) * | 2015-04-29 | 2015-07-22 | 中国船舶重工集团公司第七二五研究所 | Bi-directional pressure self-balancing type stop valve |
| CN105889529A (en) * | 2016-06-30 | 2016-08-24 | 纽威石油设备（苏州）有限公司 | Plunger type well drilling throttle valve |
| CN107131353A (en) * | 2017-04-25 | 2017-09-05 | 中国船舶重工集团公司第七二五研究所 | A kind of two-way low operational torque high-pressure stop valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140212 Termination date: 20190909 |