CN204267413U - A kind of fine-tuning pressure controlled valve - Google Patents
A kind of fine-tuning pressure controlled valve Download PDFInfo
- Publication number
- CN204267413U CN204267413U CN201420744795.2U CN201420744795U CN204267413U CN 204267413 U CN204267413 U CN 204267413U CN 201420744795 U CN201420744795 U CN 201420744795U CN 204267413 U CN204267413 U CN 204267413U
- Authority
- CN
- China
- Prior art keywords
- oil outlet
- spool
- oil
- valve body
- groove
- 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.)
- Expired - Fee Related
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- Mechanically-Actuated Valves (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The utility model discloses a kind of fine-tuning pressure controlled valve, comprise handwheel, valve body, spool and spring, wherein valve body is provided with handwheel, screw rod is provided with in handwheel, the top of valve body is provided with tapped hole, screw rod is through tapped hole, screw rod has big spring, big spring has regulator plate, regulator plate has adjustable lever, the inner side of adjustable lever is provided with spool, the central authorities of spool are provided with groove, the right side of groove is provided with oil inlet pipe, the left side of groove is provided with oil outlet tube, spool has little spring, the two ends of little spring are separately fixed on spool and valve body, the bottom of valve body is provided with filler opening and oil outlet, oil inlet pipe is connected on filler opening, oil outlet tube is connected on oil outlet, bottom at valve body between filler opening and oil outlet is provided with unloading port, oil inlet pipe and go out between play pipe pressure oil is housed.
Description
Technical field
The utility model relates to hydraulic control component field, is specifically related to a kind of fine-tuning pressure controlled valve.
Background technique
Reduction valve is by regulating, inlet pressure being reduced to the outlet pressure of a certain needs, and rely on the energy of medium itself, make the valve that outlet pressure keeps stable automatically.From hydromechanical viewpoint, reduction valve is the throttle element that a local resistance can change, and namely by changing orifice size, the kinetic energy of flow velocity and fluid being changed, causes the different pressure losses, thus reach the object of decompression.Then rely on the adjustment of control and regulation system, the fluctuation of downstream pressure and spring force are balanced each other, makes downstream pressure keep constant in certain margin of error.
The basic role principle of reduction valve reduces hydraulic pressure by valve inner flow passage to the local resistance of current, and the scope that hydraulic pressure falls is regulated automatically by the import and export differential water pressures of the film or piston both sides that connect flap.
Model utility content
For the deficiencies in the prior art, the purpose of this utility model is the reduction valve providing a kind of fine-tuning bidirectional modulation pressure, to solve existing problem.
The technical problem that the utility model solves can realize by the following technical solutions: a kind of fine-tuning pressure controlled valve, comprise handwheel, valve body, spool and spring, wherein said valve body is provided with described handwheel, screw rod is provided with in handwheel, the top of valve body is provided with tapped hole, screw rod is through tapped hole, screw rod has big spring, big spring has regulator plate, regulator plate has adjustable lever, the inner side of adjustable lever is provided with described spool, the central authorities of spool are provided with groove, the right side of groove is provided with oil inlet pipe, the left side of groove is provided with oil outlet tube, spool has little spring, the two ends of little spring are separately fixed on spool and valve body, the bottom of valve body is provided with filler opening and oil outlet, oil inlet pipe is connected on filler opening, oil outlet tube is connected on oil outlet, bottom at valve body between filler opening and oil outlet is provided with unloading port, between oil inlet pipe and oil outlet tube, pressure oil is housed.
Preferably, the surrounding of described screw rod is provided with seal ring.
Preferably, described adjustable lever is in the centre of oil outlet tube and groove, and the end of adjustable lever is in oil outlet tube.
Preferably, the diameter of described oil inlet pipe is greater than the diameter of groove.
Preferably, square piston is provided with in described unloading port.
Beneficial effect is: the top of this reduction valve is provided with the screw rod under handwheel and handwheel, pass through rotation hand wheel, screw rod can be driven to rotate thus rise and fall, and the big spring under screw rod also can drive the regulator plate under it and adjustable lever to be elevated, because adjustable lever end is in oil outlet tube, therefore the lifting of adjustable lever can change the cross-section area of oil outlet tube, thus adjust the pressure in oil pipe, thus reduction valve is finely tuned.And have pressure oil in the centre of oil outlet tube and oil inlet pipe, change the capacity of pressure oil by unloading port thus promote spool wherein, spool central authorities are provided with groove, for connecting oil outlet tube and oil inlet pipe, hydraulic oil is circulated, and the moving up and down of spool, the overlapping area between groove and oil outlet tube can be changed, thus change pressure, play the effect of decompression, dual pressure change can make this reduction valve pressure regulation spectrum larger
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Wherein 1, handwheel; 2, screw rod; 3, tapped hole; 4, valve body; 5, seal ring; 6, big spring; 7, regulator plate; 8, adjustable lever; 9, spool; 10, groove; 11, oil inlet pipe; 12, oil outlet tube; 13, hydraulic oil; 14, filler opening; 15, unloading port; 16, piston; 17, little spring; 18, oil outlet.
Embodiment
Preferred implementation of the present utility model is described in detail below in conjunction with accompanying drawing.
Fig. 1 shows a kind of embodiment of the utility model: a kind of fine-tuning pressure controlled valve, comprise handwheel 1, valve body 4, spool 9 and spring, wherein valve body 4 is provided with handwheel 1, screw rod 2 is provided with in handwheel 1, the top of valve body 4 is provided with tapped hole 3, screw rod 2 is through tapped hole 3, screw rod 2 has big spring 6, big spring 6 has regulator plate 7, regulator plate 7 has adjustable lever 8, the top of reduction valve is provided with the screw rod 2 under handwheel 1 and handwheel 1, by rotation hand wheel 1, screw rod 2 can be driven to rotate thus rise and fall, and the big spring 6 under screw rod 2 also can drive the regulator plate 7 under it to be elevated with adjustable lever 8, the inner side of adjustable lever 8 is provided with spool 9, the central authorities of spool 9 are provided with groove 10, the right side of groove 10 is provided with oil inlet pipe 11, the left side of groove 10 is provided with oil outlet tube 12, groove 10 is for connecting oil outlet tube 12 and oil inlet pipe 11, hydraulic oil 13 is circulated, spool 9 has little spring 17, the two ends of little spring 17 are separately fixed at spool 9 with on valve body 4, the bottom of valve body 4 is provided with filler opening 14 and oil outlet 18, oil inlet pipe 11 is connected on filler opening 14, oil outlet tube 12 is connected on oil outlet 18, unloading port 15 is provided with in the bottom of valve body 4 between filler opening 14 and oil outlet 18, between oil inlet pipe 11 and oil outlet tube 12, pressure oil is housed, change the capacity of pressure oil by unloading port 15 thus promote spool 9 wherein, .The surrounding of screw rod 2 is provided with seal ring 5.Adjustable lever 8 is in the centre of oil outlet tube 12 with groove 10, and the end of adjustable lever 8 is in oil outlet tube 12.The diameter of oil inlet pipe 11 is greater than the diameter of groove 10.Square piston 16 is provided with in unloading port 15.Because adjustable lever 8 end is in oil outlet tube 12, therefore the lifting of adjustable lever 8 can change the cross-section area of oil outlet tube 12, thus adjusts the pressure in oil pipe 12, thus finely tunes reduction valve.And have pressure oil in the centre of oil outlet tube 12 and oil inlet pipe 11, spool 9 central authorities are provided with groove 10, and the moving up and down of spool 9, the overlapping area between groove 10 and oil outlet tube 12 can be changed, thus change pressure, play the effect of decompression, dual pressure change can make this reduction valve pressure regulation spectrum larger.
Oil outlet 18 and filler opening 14 are connected in hydraulic system, UNICOM's hydraulic oil 13, regulate as requested pressure oil number thus change pressure on a large scale, the pressure difference of the fine-tuning hydraulic oil 13 of adjusting handle 1.
The beneficial effect of above technological scheme is adopted to be: the top of this reduction valve is provided with the screw rod 2 under handwheel 1 and handwheel 1, by rotation hand wheel 1, screw rod 2 can be driven to rotate thus rise and fall, and the big spring 6 under screw rod 2 also can drive the regulator plate 7 under it to be elevated with adjustable lever 8, because adjustable lever 8 end is in oil outlet tube 12, therefore the lifting of adjustable lever 8 can change the cross-section area of oil outlet tube 12, thus adjust the pressure in oil pipe 12, thus reduction valve is finely tuned.And have pressure oil in the centre of oil outlet tube 12 and oil inlet pipe 11, change the capacity of pressure oil by unloading port 15 thus promote spool 9 wherein, spool 9 central authorities are provided with groove 10, for connecting oil outlet tube 12 and oil inlet pipe 11, hydraulic oil 13 is circulated, and the moving up and down of spool 9, the overlapping area between groove 10 and oil outlet tube 12 can be changed, thus change pressure, play the effect of decompression, dual pressure change can make this reduction valve pressure regulation spectrum larger.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (5)
1. a fine-tuning pressure controlled valve, comprise handwheel, valve body, spool and spring, , it is characterized in that: described valve body is provided with described handwheel, screw rod is provided with in handwheel, the top of valve body is provided with tapped hole, screw rod is through tapped hole, screw rod has big spring, big spring has regulator plate, regulator plate has adjustable lever, the inner side of adjustable lever is provided with described spool, the central authorities of spool are provided with groove, the right side of groove is provided with oil inlet pipe, the left side of groove is provided with oil outlet tube, spool has little spring, the two ends of little spring are separately fixed on spool and valve body, the bottom of valve body is provided with filler opening and oil outlet, oil inlet pipe is connected on filler opening, oil outlet tube is connected on oil outlet, bottom at valve body between filler opening and oil outlet is provided with unloading port, between oil inlet pipe and oil outlet tube, pressure oil is housed.
2. a kind of fine-tuning pressure controlled valve according to claim 1, is characterized in that: the surrounding of described screw rod is provided with seal ring.
3. a kind of fine-tuning pressure controlled valve according to claim 1, is characterized in that: described adjustable lever is in the centre of oil outlet tube and groove, and the end of adjustable lever is in oil outlet tube.
4. a kind of fine-tuning pressure controlled valve according to claim 1, is characterized in that: the diameter of described oil inlet pipe is greater than the diameter of groove.
5. a kind of fine-tuning pressure controlled valve according to claim 1, is characterized in that: be provided with square piston in described unloading port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420744795.2U CN204267413U (en) | 2014-12-01 | 2014-12-01 | A kind of fine-tuning pressure controlled valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420744795.2U CN204267413U (en) | 2014-12-01 | 2014-12-01 | A kind of fine-tuning pressure controlled valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204267413U true CN204267413U (en) | 2015-04-15 |
Family
ID=52802284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420744795.2U Expired - Fee Related CN204267413U (en) | 2014-12-01 | 2014-12-01 | A kind of fine-tuning pressure controlled valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204267413U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019071871A1 (en) * | 2017-10-09 | 2019-04-18 | 中国矿业大学 | Dual-spring high-precision hysteresis-type pressure control valve |
-
2014
- 2014-12-01 CN CN201420744795.2U patent/CN204267413U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019071871A1 (en) * | 2017-10-09 | 2019-04-18 | 中国矿业大学 | Dual-spring high-precision hysteresis-type pressure control valve |
| AU2018247202B2 (en) * | 2017-10-09 | 2019-11-28 | China University Of Mining And Technology | Double-spring and high-precision pressure control valve with hysteresis |
| US10663982B2 (en) | 2017-10-09 | 2020-05-26 | China University Of Mining And Technology | Double-spring and high-precision hysteretic pressure control 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: 20150415 Termination date: 20151201 |
|
| EXPY | Termination of patent right or utility model |