CN203431207U - Bidirectional balancing program control valve - Google Patents
Bidirectional balancing program control valve Download PDFInfo
- Publication number
- CN203431207U CN203431207U CN201320556386.5U CN201320556386U CN203431207U CN 203431207 U CN203431207 U CN 203431207U CN 201320556386 U CN201320556386 U CN 201320556386U CN 203431207 U CN203431207 U CN 203431207U
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- Prior art keywords
- valve
- spool
- lining
- valve core
- cylinder
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Abstract
The utility model discloses a bidirectional balancing program control valve. The bidirectional balancing program control valve comprises a valve cover, and the upper end and the lower end of the valve cover are provided with an air cylinder and a valve body respectively; one end of a valve rod penetrates the valve cover and is arranged inside the middle cavity of the valve body and fixedly connected with a valve core, and the other end of the valve rod is supported at the top of the air cylinder; a piston is fixed onto the section of the valve rod, which is disposed inside the valve body, through a nut; a bush is snapped inside the valve body; the bottom surface of the valve core is provided with a valve core inner cavity, the upper surface of the valve core is provided with a balancing hole which is communicated with the valve core inner cavity, the valve core is fixedly mounted on the valve rod through a nut, the upper end of the valve core is arranged inside the bush, and the lower end surface of the valve core is provided with a sealing piece in a pressing mode through a press ring and a bolt set. According to the bidirectional balancing program control valve, the balancing hole formed in the valve core for communicating the valve body middle cavity and the valve core inner cavity can transmit lower cavity pressure to the middle cavity, so that the lower cavity pressure born by the valve core is balanced by the middle cavity pressure, and likewise, medium pressure in the outlet direction is also balanced, so that the utilization pressure difference of the valve can be improved, and the operation force required during valve opening can be relatively small.
Description
Technical field
The utility model relates to valve technology field, is specifically related to a kind of bidirectional balanced sequencing valve of realizing the quick unlatching of valve by improving valve core inside structure.
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 sequencing valve that the bidirectional balanced sequencing valve that the utility model provides has solved prior art needs larger steering force could realize valve opening and the problem of cutting out.
In order to reach foregoing invention object, the technical solution adopted in the utility model is: a kind of bidirectional balanced sequencing 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 by bolt group; Valve body upper end is supported on cylinder top, and piston is fixed on valve rod by locking nut and is positioned at that section of cylinder; It is characterized in that:
Also comprise spool and lining, described lining is installed in valve body, and described valve rod one end is arranged in the lumen of valve body and is fixedly connected with spool through valve gap; Spool lower surface is provided with a valve core cavity, is provided with the equalizing orifice being communicated with valve core cavity on spool, and spool upper end is located in lining; The lower end surface of spool has been installed with a diaphragm seal by hold-down ring and bolt group.
Further, described sleeve inner surface is provided with a step, and spool is positioned at the external diameter of lining and the lining internal diameter of step lower end equates, and the lining internal diameter of step upper end is greater than the external diameter that spool is positioned at lining.
Further, the end that described spool is positioned at lining is provided with seal ring.
The beneficial effects of the utility model are: the equalizing orifice being communicated with valve core cavity of offering on the spool of bidirectional balanced sequencing valve, lower cavity pressure is passed to lumen, the suffered lower cavity pressure of spool is fallen by the pressure balance of lumen, the pressure medium of same Way out is also balance, the use pressure reduction of valve is improved, the steering force needing during valve opening is smaller, thereby reduced widely actuator, valve overall volume is dwindled, the auxiliary device energy consumption of the valve such as saved gas, surge.
Lining endoporus is made stepped shape, and when spool is closed from top to bottom, seal ring is not compressed, does not also have seal action, has reduced valve operation power; Until closing movement arrives final stage, seal ring is imported into the path section of lining, and seal ring is compressed, starts sealing, until spool is closed completely; When spool moves upward unlatching sequencing valve, only need to open a bit of seal ring and just can depart from path section, no longer compressed.
Accompanying drawing explanation
Fig. 1 is the structural representation of bidirectional balanced sequencing valve;
Fig. 2 is the enlarged view of A portion in Fig. 1.
Wherein, 1, valve body; 2, cavity of resorption; 3, diaphragm seal; 4, hold-down ring; 5, spool; 51, equalizing orifice; 6, lining; 61, step; 7, valve gap; 8, valve rod; 9, valve bonnet seal cover; 10, valve stem seal cover; 11, piston; 12, cylinder; 13, upper sleeve gasket; 14, dust ring; 15, guard shield; 16, solenoid valve; 17, take over assembly; 18, leak hunting aperture; 19, baffler; 20, lumen; 21, seal ring.
Embodiment
As shown in Figure 1, this bidirectional balanced sequencing valve comprises valve body 1, valve gap 7, valve rod 8, spool 5, lining 6 and piston 11, 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 12 by bolt group; Described valve rod 8 one end are arranged on through valve gap 7 in the lumen 20 of valve body 1 and are fixedly connected with spool 5, and the other end guide support is on cylinder 12 tops, and piston 11 is fixed on valve rod 8 by locking nut and is positioned at cylinder 12 those sections; Described valve rod 8 is monolithic construction, and described cylinder 12 is located along the same line with the medial axis of valve gap 7.
In order to guarantee the sealing between valve gap 7 and valve rod 8, between valve gap 7 and valve rod 8, be provided with from the bottom to top valve bonnet seal cover 9 and valve stem seal cover 10, the outer rim of valve bonnet seal cover 9 and valve stem seal cover 10 is all bolted on valve gap 7; In order further to guarantee the sealing between valve gap 7 and valve rod 8, between valve bonnet seal cover 9 and valve rod 8 and valve gap 7 and between valve stem seal cover 10 and valve rod 8 and valve gap 7, be provided with O shape circle; In order to detect the sealing of valve bonnet seal cover 9, offer a bird-caging annular groove thereon, make again bird-caging annular groove be communicated with the leak hunting aperture 18 on valve gap 7, the leak hunting aperture 18 connecting can provide auxiliary seal, also can be used for blowing the temperature that cooling water reduces valve rod 8, for avoiding the poor sealing of valve bonnet seal cover 9 to cause gas to overflow by leak hunting aperture 18, on leak hunting aperture 18, be provided with a baffler 19.
Between valve rod 8 and cylinder 12 tops, be also provided with upper sleeve gasket 13; Between upper sleeve gasket 13 and cylinder 12, between upper sleeve gasket 13 and valve rod 8, between piston 11 and valve rod 8 and be provided with O shape circle between piston 11 and cylinder 12; In order slowing down when piston 11 liftings put in place, upper sleeve gasket 13 to be impacted, on the locking nut of fastening piston 11, bumper to be installed.
As shown in Figure 2, the lower end surface of spool 5 has been installed with a diaphragm seal 3 by hold-down ring 4 and bolt group; Lining 6 internal surfaces are provided with a step 61, spool 5 is positioned at the external diameter of lining 6 and lining 6 internal diameters of step 61 lower ends equate, and lining 6 internal diameters of step 61 upper ends are greater than the external diameter that spool 5 is positioned at lining 6, and be installed with seal ring 21 in the end outer surface that spool 5 is positioned at lining 6.Arrange like this after lining 6, when spool 5 is closed from top to bottom, seal ring 21 is not compressed, does not have seal action yet, has reduced valve operation power; Until closing movement arrives final stage, seal ring 21 is imported into the path section of lining 6, and seal ring 21 is compressed, starts sealing, until spool 5 is closed completely; When spool 5 moves upward unlatching, only need to open a bit of seal ring 21 and just depart from path section, no longer compressed, above-mentioned seal ring 21 is O shape circles, can be also the piston packing of other form.
This bidirectional balanced sequencing valve adopts integral structure by valve rod 8, and cylinder 12 and valve body 1 are installed on respectively the upper and lower surface of valve gap 7, make the compact structure of this sequencing valve, have saved installing space, have improved overhaul efficiency.
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 (8)
1. a bidirectional balanced sequencing 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 by bolt group; Valve body upper end is supported on cylinder top, and piston is fixed on valve rod by locking nut and is positioned at that section of cylinder; It is characterized in that:
Also comprise spool and lining, described lining is installed in valve body, and described valve rod one end is arranged in the lumen of valve body and is fixedly connected with spool through valve gap; Spool lower surface is provided with a valve core cavity, is provided with the equalizing orifice being communicated with valve core cavity on spool, and spool upper end is located in lining; The lower end surface of spool has been installed with a diaphragm seal by hold-down ring and bolt group.
2. bidirectional balanced sequencing valve according to claim 1, it is characterized in that: described sleeve inner surface is provided with a step, spool is positioned at the external diameter of lining and the lining internal diameter of step lower end equates, and the lining internal diameter of step upper end is greater than the external diameter that spool is positioned at lining.
3. bidirectional balanced sequencing valve according to claim 2, is characterized in that: the end outer surface that described spool is positioned at lining is installed with seal ring.
4. according to the arbitrary described bidirectional balanced sequencing valve of claim 1-3, it is characterized in that: described valve rod is integral type structure, and the medial axis of cylinder and valve gap is positioned on same axis.
5. according to the arbitrary described bidirectional balanced sequencing valve of claim 1-3, it is characterized in that: between described valve gap and valve rod, be provided with from the bottom to top valve bonnet seal cover and valve stem seal cover, the outer rim of valve bonnet seal cover and valve stem seal cover is all fixed by bolts on end cap.
6. bidirectional balanced sequencing valve according to claim 5, is characterized in that: on described valve gap, be provided with one and overlap with valve bonnet seal the leak hunting aperture connecting, the outlet of leak hunting aperture is provided with baffler.
7. bidirectional balanced sequencing valve according to claim 1, is characterized in that: between described valve rod and cylinder head, be also provided with upper sleeve gasket.
8. bidirectional balanced sequencing valve according to claim 7, is characterized in that: the valve rod end of cylinder end face is provided with dust ring, and top is provided with guard shield.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320556386.5U CN203431207U (en) | 2013-09-09 | 2013-09-09 | Bidirectional balancing program control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320556386.5U CN203431207U (en) | 2013-09-09 | 2013-09-09 | Bidirectional balancing program control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203431207U true CN203431207U (en) | 2014-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320556386.5U Expired - Fee Related CN203431207U (en) | 2013-09-09 | 2013-09-09 | Bidirectional balancing program control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203431207U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134989A (en) * | 2015-08-24 | 2015-12-09 | 河南省中原大化集团有限责任公司 | Novel double-flow-direction cut-off regulating valve sealing device and application method |
| CN106594294A (en) * | 2016-12-08 | 2017-04-26 | 中国航天空气动力技术研究院 | Air pressure type rapid switching valve |
| CN106870815A (en) * | 2017-03-17 | 2017-06-20 | 湖南泵阀制造有限公司 | Balanced type Direct Action Type water attack release valve |
| CN110939744A (en) * | 2019-12-17 | 2020-03-31 | 济南大学 | Cage type guide program control valve suitable for high pressure difference |
| CN111878588A (en) * | 2020-07-20 | 2020-11-03 | 江苏中伟节能科技有限公司 | Stop valve suitable for high-temperature fluid |
-
2013
- 2013-09-09 CN CN201320556386.5U patent/CN203431207U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134989A (en) * | 2015-08-24 | 2015-12-09 | 河南省中原大化集团有限责任公司 | Novel double-flow-direction cut-off regulating valve sealing device and application method |
| CN106594294A (en) * | 2016-12-08 | 2017-04-26 | 中国航天空气动力技术研究院 | Air pressure type rapid switching valve |
| CN106870815A (en) * | 2017-03-17 | 2017-06-20 | 湖南泵阀制造有限公司 | Balanced type Direct Action Type water attack release valve |
| CN106870815B (en) * | 2017-03-17 | 2022-12-20 | 湖南泵阀制造有限公司 | Balance type direct-acting water attack relief valve |
| CN110939744A (en) * | 2019-12-17 | 2020-03-31 | 济南大学 | Cage type guide program control valve suitable for high pressure difference |
| CN111878588A (en) * | 2020-07-20 | 2020-11-03 | 江苏中伟节能科技有限公司 | Stop valve suitable for high-temperature fluid |
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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: 20200909 |