CN201636405U - Pressure adjusting valve with non-leakage and servo control - Google Patents
Pressure adjusting valve with non-leakage and servo control Download PDFInfo
- Publication number
- CN201636405U CN201636405U CN2009202943300U CN200920294330U CN201636405U CN 201636405 U CN201636405 U CN 201636405U CN 2009202943300 U CN2009202943300 U CN 2009202943300U CN 200920294330 U CN200920294330 U CN 200920294330U CN 201636405 U CN201636405 U CN 201636405U
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- pressure
- valve
- main valve
- medium
- pilot
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Abstract
The utility model discloses a pressure adjusting valve with non-leakage and servo control, which comprises a main valve and a pilot valve, wherein the main valve comprises a main valve body, a main valve seat and a main valve core; a balancing cavity is arranged between the main valve and the pilot valve; the pilot valve is provided with a pressure releasing cavity; the balancing cavity is respectively communicated with a medium inlet of the main valve and a medium inlet of the pilot valve; the pressure releasing cavity is communicated with a medium outlet of the main valve; the main valve core is a cone with a smaller lower part and a bigger upper part, and faces the flowing direction of the medium and is opposite to a medium passage of the main valve seat; and the balancing cavity and the pressure releasing cavity are respectively sealed with the outside through static sealing structures. The pressure adjusting valve with non-leakage and servo control utilizes the self-energy of liquid for controlling the opening of the main valve; when the pressure fluctuates in front of or behind the valve, the opening degree of the valve core is changed, thus guaranteeing the pressure of the system to be steadily transited, ensuring the pressure behind the valve to be steady, and being beneficial to normal operation of downstream equipment; and simultaneously, the balancing cavity and the pressure releasing cavity of the pilot valve are sealed with the outside by sealing rings, thus being capable of guaranteeing the medium from being leaked out and being beneficial to saving resources and maintaining sanitary environment when in pressure adjustment and after pressure adjustment.
Description
Technical field
The utility model relates to a kind of pipeline fittings, and particularly a kind of nothing is leaked the servocontrol pressure regulator valve.
Background technique
Pipeline is the visual plant that is used for fed sheet of a media, in order to be adapted to different process conditions and different equipment, need reduce pressure to the medium in the pipeline or pressure regulation, with carrying out smoothly of guaranteeing to produce.
Pressure regulator valve is regulated annex as loine pressure and is obtained using comparatively widely.In the prior art, leading type automatic pressure control modulating valve changes the aperture of main valve by the fluid self-energy, and then changes the throttle resistance of main valve, keeps the constant substantially of outlet pressure.Leading type automatic pressure control modulating valve generally comprises main valve and pilot valve, and valve core of main valve is positioned at the position of valve base channel dorsad, utilizes driven plunger to promote spool and opens.This pressure regulator valve can guarantee preferably that the occasion that is specially adapted to gas medium and the stationarity of pressure is had relatively high expectations does not appear fluctuating in a big way in outlet pressure.And, when being in design, do not take the screw press of existing pressure regulator valve seal approach, can produce dielectric leakage in the work, particularly when Installation and Debugging, medium system produce peak value of pulse pressure, device maintenance maintenance and Set pressure parameter, leakage phenomenon is comparatively serious, causes the wasting of resources and environmental pollution.And the media flow direction setting dorsad of existing valve core of main valve, particularly liquid medium when rapid fluctuation appears in pressure, causes the fatigue fracture of spool joint easily, overhaul cost of idleness thereby need to stop work.
For the pipeline of carrying liquid, do not wish to occur the situation of pressure than great fluctuation process, avoid pipeline is caused damage.And under the situation that the pipeline caliber is enough big behind the valve of pressure regulator valve, when loine pressure increases, suitably regulate and increase or reduce flow behind the valve, can guarantee that pressure is steady after and before the valve, and guarantee that downstream pressure is steady.
Therefore, need a kind of automatic pressure control modulating valve, can be when fluctuation appears in loine pressure; guarantee the system pressure smooth transition, the protection pipeline is not damaged, and guarantees the downstream pressure held stationary yet; simultaneously, pressure regulator valve itself does not have and to leak, and is beneficial to economize on resources and keep environmental hygiene.
The model utility content
In view of this; the utility model provides a kind of nothing to leak the servocontrol pressure regulator valve; can be when fluctuation appears in loine pressure; guarantee the system pressure smooth transition; the protection pipeline is not damaged, and guarantees the downstream pressure held stationary, simultaneously yet; pressure regulator valve itself does not have and to leak, and is beneficial to economize on resources and keep environmental hygiene.
Nothing of the present utility model is leaked the servocontrol pressure regulator valve, comprise main valve and pilot valve, described main valve comprises main valve body, main valve seat and main valve plug, between described main valve and the pilot valve counter balance pocket is set, pilot valve is provided with pressure-releasing chamber, described counter balance pocket is communicated in import of main valve medium and the import of pilot valve medium respectively, and pressure-releasing chamber is communicated in the main valve media outlet, and described main valve plug big taper and met to the media flow direction relative with the main valve seat medium channel for little down; Described counter balance pocket and pressure-releasing chamber are respectively by static seal structure and extraneous sealing.
Further, described main valve plug top is provided with the piston that cooperates with the valve body mode of can slide up and down, described piston drives with main valve plug and cooperates, and the piston upper-end surface is positioned at counter balance pocket and is provided with the main valve plug spring, and described main valve plug spring is provided with presses pretightening force to withstand on the piston upper-end surface;
Further, the import of main valve medium is communicated in counter balance pocket by nozzle;
Further, described pilot valve comprises guide's valve body, guide's spool, guide's valve seat and pressure regulation assembly; Described pilot valve seat is positioned between import of pilot valve medium and the pressure-releasing chamber, described pressure regulation assembly comprises pressure adjusting spring and regulator bolts, described regulator bolts vertically screws in guide's valve body, described pressure adjusting spring one end withstands regulator bolts, and the other end withstands guide's spool from top to bottom by compressive pre-stress withstands on guide's valve seat it;
Further, drive connection by the stiffness spring that vertically is provided with between described piston lower surface and the main valve plug upper-end surface;
Further, described pressure regulation assembly also comprises outer cover, and described outer cover covers on outside regulator bolts and the pressure adjusting spring and by being threaded and is spun on the regulator bolts.
The beneficial effects of the utility model: nothing of the present utility model is leaked the servocontrol pressure regulator valve, spool is met to the setting of media flow direction, be applicable to liquid medium, can the fatigue fracture that fluctuation causes spool not appear because of the pressure of liquid, utilize the energy of liquid own, control main valve aperture, when pressure surge occurring before the valve or behind the valve, change the opening degree of spool, can compensator or trimmer pressure the energy that produces of fluctuation, guarantee the system pressure smooth transition, thereby the protection pipeline is not damaged, also guarantee the downstream pressure held stationary, be beneficial to the normal operation of upstream device; Simultaneously, seal by seal ring between the counter balance pocket of pilot valve and pressure-releasing chamber and the external world, can guarantee all during pressure regulation and after the pressure regulation that medium does not have to leak, be beneficial to and economize on resources and keep environmental hygiene.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described.
Accompanying drawing is a structural representation of the present utility model.
Embodiment
Accompanying drawing is a structural representation of the present utility model, as shown in the figure: the nothing of present embodiment is leaked the servocontrol pressure regulator valve, comprise main valve and pilot valve, described main valve comprises main valve body 1, main valve seat 13 and main valve plug 2, counter balance pocket 14 is set between described main valve and the pilot valve, and pilot valve is provided with pressure-releasing chamber 10, and described counter balance pocket 14 is communicated in main valve medium import 11 and pilot valve medium import 21 respectively, as shown in the figure, main valve medium import 11 is communicated in counter balance pocket 14 by pulsed tube 19 and nozzle 20; Pressure-releasing chamber 10 is communicated in main valve media outlet 12, and as shown in the figure, pressure-releasing chamber 10 is communicated in main valve media outlet 12 by relief tube 15; Described main valve plug 2 big taper and is met to the media flow direction relative with main valve seat 13 medium channels for little down; Described counter balance pocket 14 and pressure-releasing chamber 10 are respectively by static seal structure and extraneous sealing; As shown in the figure, the static seal structure of counter balance pocket 14 and pressure-releasing chamber 10 is respectively seal ring 17, seal ring 16 and seal ring 18.
In the present embodiment, described main valve plug 2 tops are provided with the piston 4 that cooperates with valve body 1 mode of can slide up and down, and described piston 4 drives with main valve plug 2 and cooperates, and drive to cooperate the drive main valve plug 2 that moves up and down that is meant along with piston 4 also to move up and down, and change opening degree; Piston 4 upper-end surfaces are positioned at counter balance pocket 14 and are provided with main valve plug spring 5, and described main valve plug spring 5 is provided with presses pretightening force to withstand on piston 4 upper-end surfaces; As shown in the figure, main valve body 1 top is provided with inside boss 1a, and main valve plug spring 5 one ends withstand on the boss 1a, and the other end withstands on piston 4 upper-end surfaces.
In the present embodiment, the import 11 of main valve medium is communicated in counter balance pocket 14 by nozzle 20; Nozzle 20 can form jet and accelerate velocity of medium, opens pilot valve fast, strengthens flexibility of the present utility model.
In the present embodiment, described pilot valve comprises guide's valve body 22, guide's spool 6, guide's valve seat 23 and pressure regulation assembly, and as shown in the figure, guide's spool 6 is a spheroid, and guide's valve seat 23 is formed by the inside boss 1a that main valve body 1 top is provided with, and is simple and compact for structure; Described guide's valve seat 23 is between import 21 of pilot valve medium and pressure-releasing chamber 10, described pressure regulation assembly comprises pressure adjusting spring 9 and regulator bolts 7, described regulator bolts 7 vertically screws in guide's valve body 22, described pressure adjusting spring 9 one ends withstand regulator bolts 7, and the other end withstands guide's spool 6 from top to bottom by compressive pre-stress withstands on guide's valve seat 23 it;
In the present embodiment, drive connection by the stiffness spring 3 that vertically is provided with between described piston 4 lower end surfaces and main valve plug 2 upper-end surfaces; During medium active drive main valve plug 2,, guarantee the smooth and easy operation of piston 4 by the buffering effect of stiffness spring 3, and less demanding to coaxality, prevent that piston 4 is stuck.
In the present embodiment, described pressure regulation assembly also comprises outer cover 8, and described outer cover 8 covers on outside regulator bolts 7 and the pressure adjusting spring 9 and by being threaded and is spun on the regulator bolts 7; Protect regulator bolts 7 and prevent that further medium from leaking.
The utility model oil inlet pipe pressure acts on main valve plug 2 conical surfaces, and its pressure enters counter balance pocket 14 by pulsed tube 19, nozzle 20 simultaneously, acts on piston 4 end faces, and guide's spool 6 upside pressures are the setting pressure of pressure adjusting spring 9.
During the ripple disable of oil inlet pipe constant pressure, the suffered oil pressure of guide's spool 6 downsides is less than the given pressure of the suffered pressure adjusting spring of guide's spool 6 upsides 9; The fluid of counter balance pocket 14 is in quiet stagnant state, and main valve plug 2 is operated in the appropriate location of design, and the constant pressure of oil outlet, flow are also relatively stable.
When filler opening pressure raise, fluid entered counter balance pocket 14 by pulsed tube 19 and nozzle 20 ejection jets, instantaneous the increasing of pressure in the counter balance pocket 14, and 6 times side pressure of guide's spool are greater than upside pressure adjusting spring 9 setting pressures; Guide's spool 6 is opened, and fluid is flowed out by relief tube 15 from pressure-releasing chamber 10, and simultaneously, counter balance pocket 14 pressure reduce, main valve plug 2 moves up, and valve port opening strengthens, and flow increases, because the outlet conduit diameter is enough big, thereby maintaining valve outlet end pressure is constant substantially, and make the system pressure fluctuation less.
Balance pressure in the counter balance pocket is adjusted by 7 pairs of pressure adjusting springs 9 of regulator bolts, corresponding required Set pressure.This structure and operation thereof make pressure that acts on piston-top surface and the pressure balance that acts on the main valve plug, and any variation of this balance is all compensated automatically.
Explanation is at last, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (6)
1. one kind is not had the servocontrol of leakage pressure regulator valve, comprise main valve and pilot valve, described main valve comprises main valve body, main valve seat and main valve plug, between described main valve and the pilot valve counter balance pocket is set, pilot valve is provided with pressure-releasing chamber, described counter balance pocket is communicated in import of main valve medium and the import of pilot valve medium respectively, and pressure-releasing chamber is communicated in the main valve media outlet, it is characterized in that: described main valve plug big taper and is met to the media flow direction relative with the main valve seat medium channel for little down; Described counter balance pocket and pressure-releasing chamber are respectively by static seal structure and extraneous sealing.
2. nothing according to claim 1 is leaked the servocontrol pressure regulator valve, it is characterized in that: described main valve plug top is provided with the piston that cooperates with the valve body mode of can slide up and down, described piston drives with main valve plug and cooperates, the piston upper-end surface is positioned at counter balance pocket and is provided with the main valve plug spring, and described main valve plug spring is provided with presses pretightening force to withstand on the piston upper-end surface.
3. nothing according to claim 2 is leaked the servocontrol pressure regulator valve, and it is characterized in that: the import of main valve medium is communicated in counter balance pocket by nozzle.
4. nothing according to claim 3 is leaked the servocontrol pressure regulator valve, and it is characterized in that: described pilot valve comprises guide's valve body, guide's spool, guide's valve seat and pressure regulation assembly; Described pilot valve seat is positioned between import of pilot valve medium and the pressure-releasing chamber, described pressure regulation assembly comprises pressure adjusting spring and regulator bolts, described regulator bolts vertically screws in guide's valve body, described pressure adjusting spring one end withstands regulator bolts, and the other end withstands guide's spool from top to bottom by compressive pre-stress withstands on guide's valve seat it.
5. nothing according to claim 4 is leaked the servocontrol pressure regulator valve, it is characterized in that: connect by the stiffness spring driving that vertically is provided with between described piston lower surface and the main valve plug upper-end surface.
6. nothing according to claim 5 is leaked the servocontrol pressure regulator valve, and it is characterized in that: described pressure regulation assembly also comprises outer cover, and described outer cover covers on outside regulator bolts and the pressure adjusting spring and by being threaded and is spun on the regulator bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202943300U CN201636405U (en) | 2009-12-31 | 2009-12-31 | Pressure adjusting valve with non-leakage and servo control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202943300U CN201636405U (en) | 2009-12-31 | 2009-12-31 | Pressure adjusting valve with non-leakage and servo control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201636405U true CN201636405U (en) | 2010-11-17 |
Family
ID=43080898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202943300U Expired - Lifetime CN201636405U (en) | 2009-12-31 | 2009-12-31 | Pressure adjusting valve with non-leakage and servo control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201636405U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465461A (en) * | 2015-02-17 | 2016-04-06 | 江苏瑞朗博机械设备有限公司 | Pilot-operated type decompression valve triggered through pin bending |
| WO2022127577A1 (en) * | 2020-12-16 | 2022-06-23 | 张磊 | Z-shaped liquid control valve without diaphragm, shaft, bushing, or spring |
-
2009
- 2009-12-31 CN CN2009202943300U patent/CN201636405U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465461A (en) * | 2015-02-17 | 2016-04-06 | 江苏瑞朗博机械设备有限公司 | Pilot-operated type decompression valve triggered through pin bending |
| WO2022127577A1 (en) * | 2020-12-16 | 2022-06-23 | 张磊 | Z-shaped liquid control valve without diaphragm, shaft, bushing, or spring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101117 |