CN203431192U - Low-lift balance type program control valve - Google Patents
Low-lift balance type program control valve Download PDFInfo
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- CN203431192U CN203431192U CN201320556531.XU CN201320556531U CN203431192U CN 203431192 U CN203431192 U CN 203431192U CN 201320556531 U CN201320556531 U CN 201320556531U CN 203431192 U CN203431192 U CN 203431192U
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- rod
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Abstract
The utility model discloses a low-lift balance type program control valve. The low-lift balance type program control valve comprises a valve body, a bonnet and a valve rod, wherein a valve core is fixed on the end portion of the valve rod, which is arranged in a central cavity, through a locking nut, the lower surface of the valve core is provided with a groove, the top surface of the valve core is provided with a balance hole which is communicated with the groove, and the lower surface of the valve core is provided with a sealing piece in a pressing mode through a clamp ring and a bolt set; a valve core cover is sleeved outside the valve rod at the upper end of the valve core, and a gap between the lower surface of the valve core cover and the upper surface of the valve core forms a valve core inner cavity. When the valve is opened, the balance hole formed in the valve core can transmit low cavity pressure to the valve core inner cavity, the low cavity pressure on the valve core is counterbalanced by the pressure of the valve core inner cavity, so that the pressure difference between the inlet and the outlet of the valve body can be reduced, further the control force during valve opening can be reduced and accordingly the volume of an actuator can be greatly reduced; the overall volume of the valve is reduced, and the energy consumption of hydraulic and pneumatic valve auxiliary devices and the like can be reduced.
Description
Technical field
The utility model relates to control valve technical field, is specifically related to a kind ofly by improving valve core inside structure, realize the balanced type sequencing valve of opening with less opening force.
Background technique
Conventional gas (liquid) program control stop valve 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 sequencing 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 sequencing valve is when opening, and spool, under lumen pressure-acting power, need to act on spool with larger steering force, just can make valve reach completely and open.
Model utility content
For above-mentioned deficiency of the prior art, the sequencing valve that the micro-open type sequencing valve that the utility model provides has solved prior art needs larger steering force could realize the problem of valve opening.
In order to reach foregoing invention object, the technical solution adopted in the utility model is: a kind of micro-open type balanced type sequencing valve is provided, it comprises valve body, valve gap and valve rod, 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; Described valve rod one end is arranged in the lumen of valve body and is fixedly connected with spool through valve gap, and the other end guide support is on cylinder top, and valve rod is positioned on that section of cylinder piston is installed;
The lower surface of described spool is provided with a groove, is provided with an equalizing orifice being communicated with groove on spool, and spool lower surface has been installed with a diaphragm seal by hold-down ring and bolt group; On the valve rod of spool upper end, be arranged with a cartridge cover, between cartridge cover and spool, be provided with an airtight valve core cavity.
Preferably, between described cartridge cover internal surface and valve core outer surface, be provided with seal ring.
Preferably, be provided with a leak hunting aperture being communicated with valve bonnet seal cover on described valve gap, the outlet of leak hunting aperture is provided with baffler.
Preferably, between described cartridge cover and valve rod, be provided with lower sleeve gasket.
Working principle of the present utility model is: when spool is opened from bottom to top, lower cavity pressure is passed to valve core cavity by the equalizing orifice of spool, the suffered lower cavity pressure of spool is fallen by the pressure balance of valve core cavity, only needs just energy poppet valve core (now cartridge cover is failure to actuate) of very little steering force; When spool is carried to cartridge cover interior edge face, diaphragm seal on spool has departed from valve body, the high-pressure medium of import enters cavity of resorption, improved the pressure of cavity of resorption, reduced valve front and back pressure reduction, at this moment only need less steering force to act on spool and just can drive cartridge cover to promote together, to reach valve, open completely.
The beneficial effects of the utility model: during valve opening, the equalizing orifice arranging on spool can pass to valve core cavity by lower cavity pressure, the suffered lower cavity pressure of spool has been fallen by the pressure balance of valve core cavity, pressure reduction between valve body import and outlet is reduced and steering force while reducing Open valve, thereby reduced widely the volume of actuator, valve overall volume is dwindled, saved gas, the auxiliary device energy consumption of the valve that surges.
Accompanying drawing explanation
Fig. 1 is micro-structural representation that opens balanced type sequencing valve.
Wherein, 1, valve body; 2, hold-down ring; 3, diaphragm seal; 4, spool; 5, equalizing orifice; 6, cartridge cover; 7, lower sleeve gasket; 8, valve rod; 9, valve bonnet seal cover; 10, valve gap; 11, valve stem seal cover; 12, piston; 13, cylinder; 14, upper sleeve gasket; 15, lifting bolt; 16, dust ring; 17, guard shield; 18, solenoid valve; 19, take over assembly; 20, leak hunting aperture; 21, baffler; 22, lumen; 23, cavity of resorption.
Embodiment
As shown in Figure 1, this micro-balanced type sequencing valve that opens comprises valve body 1, valve gap 10 and valve rod 8, and described valve gap 10 is fixed together by bolt group and valve body 1, and the upper end of valve gap 10 is provided with cylinder 13 by bolt; Described valve rod 8 one end are arranged in the lumen 22 of valve body 1 and are fixedly connected with spool 4 through valve gap 10, valve rod 8 the other end guide supports are on cylinder 13 tops, and valve rod 8 is positioned on cylinder 13 those sections piston 12 is installed.
In order to guarantee the sealing between valve rod 8 and valve gap 10, between valve rod 8 and valve gap 10, be separately installed with from the bottom to top valve bonnet seal cover 9 and valve stem seal cover 11, valve bonnet seal cover 9 and valve stem seal cover 11 and valve rod 8 touching positions and valve bonnet seal cover 9 and valve stem seal cover 11 are all provided with some O shape circles with valve gap 10 touching positions; In order to guarantee the sealing between valve rod 8 and cylinder 13, between valve rod 8 upper ends and cylinder 13 contact-segments, be provided with upper sleeve gasket 14, between upper sleeve gasket 14 and cylinder 13 and between upper sleeve gasket 14 and valve rod 8, be provided with O shape circle.
On valve bonnet seal cover 9, offer a bird-caging annular groove, it is communicated with the leak hunting aperture 20 of offering on valve gap 10, leak hunting aperture 20 can overlap for detection of valve bonnet seal 9 sealing, and the effect of auxiliary seal can also be provided simultaneously, and it also can reduce for blowing cooling water the temperature of valve rod 8.Poor sealing for fear of valve bonnet seal cover 9 causes that medium passes through leak hunting aperture 20 to outward leakage, so be provided with baffler 21 on leak hunting aperture 20.
The lower surface of spool 4 is provided with a groove, is provided with an equalizing orifice being communicated with groove 5 on spool 4, and spool 4 lower surfaces have been installed with a diaphragm seal 3 by hold-down ring 2 and bolt group; On the valve rod 8 of spool 4 upper ends, be arranged with a cartridge cover 6, between cartridge cover 6 and spool 4, be provided with an airtight valve core cavity (valve core cavity is the sealed chamber that spool 4 is arranged on cartridge cover 6 interior rear formation).Cavity between cartridge cover 6 upper surfaces and valve gap 6 is lumen 22, and the cavity of valve outlet end is cavity of resorption 23; In order to guarantee the sealing between valve core cavity and lumen 22, between cartridge cover 6 internal surfaces and spool 4 outer surfaces, be provided with seal ring, and make the bottom surface of cartridge cover outer rim leg and spool 4 bottom surfaces be positioned at same plane.Between cartridge cover 6 and valve rod 8, be provided with lower sleeve gasket 7, and between lower sleeve gasket 7 and valve rod 8 and between lower sleeve gasket 7 and cartridge cover 6, be provided with O shape circle.
On the end face of cylinder 13, by solenoid valve 18, be connected with an adapter assembly 19 communicating with cylinder 13, the other end of taking over assembly 19 communicates with the cylinder 13 of piston 12 lower ends; In order to prevent that dust from entering cylinder 13, the valve rod 8 of cylinder 13 end faces is provided with a guard shield 17 by dust ring 16.
Micro-opening balanced type sequencing valve when work, controller is exported an electrical signal by the program of finishing in advance to certain solenoid valve 18, this sequencing valve commutation action, make the switching of instrument air with pressure by solenoid valve 18 enter lower chamber of air cylinder (lower chamber of air cylinder is to be positioned at the cavity of piston below 12 in cylinder 13) and promote piston 12 and move upward, piston 12 band ovable valve stem 8 poppet valve cores 4 make valve opening; Cut off solenoid valve 18 electrical signal, control piston 12 inverted runnings make valve closing.This valve configurations is called Normally closed type.Otherwise, make open in usual and just need convert in the Placement of sequencing valve and pneumatic actuator and can realize.
When spool 4 is opened from bottom to top, lower cavity pressure is passed to valve core cavity by the equalizing orifice 5 of spool 4, and the suffered lower cavity pressure of spool 4 is fallen by the pressure balance of valve core cavity, only need very little steering force just can poppet valve core 4(now cartridge cover 6 be failure to actuate); When spool 4 is carried to cartridge cover 6 interior edge face, when the diaphragm seal 3 on spool 4 has departed from valve body 1, the high-pressure medium of lumen 22 enters cavity of resorption 23, improved the pressure of cavity of resorption 23, reduced valve front and back pressure reduction, at this moment only need less steering force to act on spool 4 and just can drive cartridge cover 6 to promote together, to reach valve, open completely.In order to facilitate the carrying of sequencing valve, at the end face of cylinder 13, lifting bolt 15 is installed.
The improvement of spool 4 and cartridge cover 6 structures, during unlatching, make the pressure reduction between valve body 1 import and outlet reduce, thus the steering force while having reduced Open valve, and then reduced widely the volume of actuator, valve overall volume is dwindled, the auxiliary device energy consumption of the valve such as saved gas, surge.
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 (6)
1. micro-balanced type sequencing valve that opens, comprises valve body, valve gap and valve rod, and described valve gap is fixed together by locking nut and valve body, and the upper end of valve gap is provided with cylinder by bolt; Valve rod upper end guide support is on cylinder top, and valve rod is positioned at that section of cylinder piston is installed; It is characterized in that:
Described valve rod one end is arranged in the lumen of valve body and is fixedly connected with spool through valve gap, the lower surface of described spool is provided with a groove, on spool, be provided with an equalizing orifice being communicated with groove, spool lower surface has been installed with a diaphragm seal by hold-down ring and bolt group; On the valve rod of spool upper end, be arranged with a cartridge cover, between cartridge cover and spool, be provided with an airtight valve core cavity.
2. micro-balanced type sequencing valve that opens according to claim 1, is characterized in that: between described cartridge cover internal surface and valve core outer surface, be provided with seal ring.
3. micro-balanced type sequencing valve that opens according to claim 1 and 2, is characterized in that: described valve core rod is integral type structure, and the medial axis of cylinder and valve gap is located along the same line.
4. micro-balanced type sequencing valve that opens according to claim 1 and 2, 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.
5. micro-balanced type sequencing valve that opens according to claim 2, is characterized in that: between described cartridge cover and valve rod, be provided with lower sleeve gasket.
6. micro-balanced type sequencing valve that opens according to claim 5, is characterized in that: bottom surface and the spool bottom surface of described cartridge cover outer rim leg are positioned at same plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320556531.XU CN203431192U (en) | 2013-09-09 | 2013-09-09 | Low-lift balance type program control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320556531.XU CN203431192U (en) | 2013-09-09 | 2013-09-09 | Low-lift balance type program control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203431192U true CN203431192U (en) | 2014-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320556531.XU Expired - Fee Related CN203431192U (en) | 2013-09-09 | 2013-09-09 | Low-lift balance type program control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203431192U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110521A (en) * | 2014-06-30 | 2014-10-22 | 浙江美德机械有限公司 | Novel assistant stopper |
| CN104565403A (en) * | 2014-12-13 | 2015-04-29 | 余姚市庆达机械有限公司 | Dust removal valve |
-
2013
- 2013-09-09 CN CN201320556531.XU patent/CN203431192U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110521A (en) * | 2014-06-30 | 2014-10-22 | 浙江美德机械有限公司 | Novel assistant stopper |
| CN104110521B (en) * | 2014-06-30 | 2016-08-24 | 浙江美德机械有限公司 | Novel power-assisted cut-off device |
| CN104565403A (en) * | 2014-12-13 | 2015-04-29 | 余姚市庆达机械有限公司 | Dust removal 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 |
Granted publication date: 20140212 Termination date: 20190909 |
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| CF01 | Termination of patent right due to non-payment of annual fee |