CN1462843A - Steady flow valve - Google Patents
Steady flow valve Download PDFInfo
- Publication number
- CN1462843A CN1462843A CN 03129377 CN03129377A CN1462843A CN 1462843 A CN1462843 A CN 1462843A CN 03129377 CN03129377 CN 03129377 CN 03129377 A CN03129377 A CN 03129377A CN 1462843 A CN1462843 A CN 1462843A
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- valve
- valve body
- pressure compensation
- hole
- axial bore
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Abstract
A flow stabilizing valve is composed of valve body with left jointer, valve core in the axial hole of valve body and having a central through hole and two radial through holes at its both ends, spring sleeving on small end of valve core, spring holder at right end of valve body, and a throttle valve installed at left end of said central through hole on valve core. On the valve body, there is an outlet A with stabilized flow and another outlet B for excessive flow. When load is changed, the orifice area of said radial through holes on valve core can be automatically changed for pressure compensation, stabilizing the output flow.
Description
Technical field
The present invention relates to the hydraulic control technology is the hydraulic element of feature, specifically hydraulic system is carried out a kind of current stabilizer of flow control.
Background technique
In the background technique field, the control that engineering machinery is travelled and turned to, widespread usage manoeuvrable, light hydraulic booster formula power system.The working pressure of system depends on condition of road surface in the steering procedure, and on smooth road surface, because running resistance is smaller, system works pressure is just lower.Otherwise working pressure is just higher.Therefore, need good flow control system to make to turn to stable.But the no good unloading assembly that existing steering system has, the system power loss is bigger; The structure that has is not compact, installs comparatively difficulty; The control valve that has has more elongated damping hole, complex structure, and difficult processing, abominable at operating environment, easily cause oil circuit to stop up the security of system poor reliability when hydraulic system pollution is serious.
Summary of the invention
The objective of the invention is: provide a kind of simple in structure, reliable, can make the speed of executive component under hydraulic pump source changes in flow rate situation, keep stable, and with the irrelevant current stabilizer of the load that is driven, realize the stable of single channel output flow, remedy the deficiency that exists in the background technique.
In order to achieve the above object, the technical solution used in the present invention is as follows:
The present invention includes: joint, throttle valve, valve body, pressure compensation spool, spring, spring seat.Left end at valve body is equipped with joint, and in the valve body axial bore, the pressure compensation spool is housed, right-hand member that the small end of pressure compensation spool is with spring, valve body is equipped with spring seat; Pressure compensation spool center has axial bore, and have the radial direction through hole that is connected with axial bore at two ends, the axial bore left and right sides, throttle valve is contained in the pressure compensation poppet shaft on the left Side end face in hole, has the valve port and the valve port that flows to other system of hydraulic oil being transported to switching valve on the valve body; The hydraulic oil of oil hydraulic pump output is input to the oil pocket of valve port from the valve port of valve body, and the radial direction through hole of the restriction of the throttle valve on the pressure compensation spool, spool axial bore, right-hand member is communicated with the oil pocket of the valve port of transporting to switching valve, transports to switching valve; Or be communicated with the oil pocket of the valve port that flows to other system through the radial direction through hole of pressure compensation spool left end, unnecessary flow flows to other system from valve port.
The present invention compares the advantage that has with background technique:
1, it can make the speed of executive component keep constant under hydraulic pump source changes in flow rate situation, and does not change with load and variation of temperature, realizes the stable of single channel output flow;
2, simple in structure, cost is low, and system power dissipation is little, and efficient is higher, and is safe and reliable, and the scope that conforms is wide.
Description of drawings
Accompanying drawing is a structural principle schematic representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, provide details of the present invention by description to embodiment.
As shown in drawings, the present invention includes:: joint 1, throttle valve 2, valve body 3, pressure compensation spool 4, spring 5, spring seat 6.Left end at valve body 3 is equipped with joint 1, and the right-hand member that the small end that pressure compensation spool 4, pressure compensation spool 4 be housed in valve body 3 axial bores is with spring 5, valve body 3 is equipped with spring seat 6; Pressure compensation spool 4 centers have axial bore, and have the radial direction through hole that is connected with axial bore at two ends, the axial bore left and right sides, throttle valve 2 is contained on the left Side end face of pressure compensation spool 4 axial bores, has the valve port A and the valve port B that flows to other system that hydraulic oil are transported to switching valve on the valve body 3; The hydraulic oil of oil hydraulic pump output is input to the oil pocket p of valve port P from the valve port P of valve body 3, and the radial direction through hole of the restriction of the throttle valve 2 on pressure compensation spool 4, spool axial bore, right-hand member is communicated with the oil pocket a of valve port A, and A transports to switching valve from valve port; Or be communicated with the oil pocket b of the valve port B that flows to other system through the radial direction through hole of pressure compensation spool 4 left ends, unnecessary flow is flowed to other system from valve port B.
Throttle valve is designed to the circular restriction of thin-walled, can carry out temperature correction, makes flow change less with oil viscosity.
Working procedure is as follows:
1. when current stabilizer was not worked, the radial direction through hole of pressure compensation spool 4 left ends was closed fully by valve body 3, and the radial direction through hole of right-hand member is opened fully.
2. the hydraulic oil of oil hydraulic pump output is input to the p chamber from the valve port P of valve body 3, and the radial direction through hole of the restriction of the throttle valve 2 on pressure compensation spool 4, axial bore, right-hand member is communicated with a chamber, all transports to switching valve from valve port A.
3. hydraulic oil makes p chamber and a chamber produce pressure difference through behind the restriction of throttle valve 2, and the p cavity pressure acts on the spool left end, and a cavity pressure acts on the spool right-hand member.Because the p cavity pressure is higher than a cavity pressure, along with the increase of input flow rate, the pressure difference in p chamber and a chamber increases gradually.When oil hydraulic pump oil transportation amount arrives certain numerical value greatly, hydraulic thrust left and spring force balance.
4. when oil hydraulic pump oil transportation during more than the required flow of valve port A, the pressure difference in p chamber and a chamber continues to increase, and to spool is moved right, is communicated with the b chamber until the p chamber.At this moment, unnecessary flow flows to other system through valve port B.Thereby the stability of flow that makes valve port A output is on certain numerical value.
5. when load increased, the pressure in a chamber raise, and to spool is moved to the left, the radial direction through hole that the spool right-hand member leads to a chamber is increased, and left end leads to b chamber radial direction through hole and is reduced; Otherwise when load reduced, the pressure in a chamber reduced, and to spool is moved right, the radial direction through hole that right-hand member leads to a chamber is reduced, and left end leads to b chamber radial direction through hole and is increased.Like this, the pressure reduction variation is compensated immediately before and after the restriction, and restriction front and back pressure reduction is remained unchanged, and then the stability of flow of valve port A output is on certain numerical value.
Claims (1)
1. a current stabilizer is characterized in that it comprises: joint (1), throttle valve (2), valve body (3), pressure compensation spool (4), spring (5), spring seat (6); Left end at valve body (3) is equipped with joint (1), and the right-hand member that the small end that pressure compensation spool (4), pressure compensation spool (4) be housed in valve body (3) axial bore is with spring (5), valve body (3) is equipped with spring seat (6); Pressure compensation spool (4) center has axial bore, and have the radial direction through hole that is connected with axial bore at two ends, the axial bore left and right sides, throttle valve (2) is contained on the left Side end face of pressure compensation spool (4) axial bore, has the valve port (B) of hydraulic oil being transported to the valve port (A) of switching valve and flowing to other system on the valve body (3); The hydraulic oil of oil hydraulic pump output is input to the oil pocket (p) of valve port (P) from the valve port (P) of valve body (3), and the radial direction through hole of the restriction of the throttle valve on pressure compensation spool (4), the axial bore of spool, right-hand member is communicated with the oil pocket (a) of the valve port of transporting to switching valve (A); Or be communicated with the oil pocket (b) of the valve port that flows to other system (B) through the radial direction through hole of pressure compensation spool (4) left end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03129377 CN1242193C (en) | 2003-06-17 | 2003-06-17 | Steady flow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03129377 CN1242193C (en) | 2003-06-17 | 2003-06-17 | Steady flow valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1462843A true CN1462843A (en) | 2003-12-24 |
| CN1242193C CN1242193C (en) | 2006-02-15 |
Family
ID=29748432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03129377 Expired - Fee Related CN1242193C (en) | 2003-06-17 | 2003-06-17 | Steady flow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1242193C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102141062A (en) * | 2011-02-25 | 2011-08-03 | 江苏国瑞液压机械有限公司 | Proportion distribution dual induction and dual damping pressure compensator |
| CN103375561A (en) * | 2012-04-13 | 2013-10-30 | 伊顿公司 | Limited-slip driveline apparatus |
| CN105626613A (en) * | 2014-10-29 | 2016-06-01 | 北京精密机电控制设备研究所 | Single-stage constant-speed valve used for high-pressure kerosene constant-speed hydraulic motor |
| CN106969251A (en) * | 2017-03-21 | 2017-07-21 | 宁波上中下自动变速器有限公司 | A kind of flow divider and its hydraulic system of lubrication for vehicle |
| CN110469704A (en) * | 2018-05-10 | 2019-11-19 | 宋志平 | A kind of fast valve of average rate leakage |
| CN111032551A (en) * | 2017-08-21 | 2020-04-17 | 麦克诺特私人有限公司 | Reel braking system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100404344C (en) * | 2006-06-13 | 2008-07-23 | 孙晓妮 | Centrifugal valve for automobile steering |
-
2003
- 2003-06-17 CN CN 03129377 patent/CN1242193C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102141062A (en) * | 2011-02-25 | 2011-08-03 | 江苏国瑞液压机械有限公司 | Proportion distribution dual induction and dual damping pressure compensator |
| CN103375561A (en) * | 2012-04-13 | 2013-10-30 | 伊顿公司 | Limited-slip driveline apparatus |
| CN103375561B (en) * | 2012-04-13 | 2018-01-05 | 伊顿公司 | Limited slip is driven system, device |
| CN105626613A (en) * | 2014-10-29 | 2016-06-01 | 北京精密机电控制设备研究所 | Single-stage constant-speed valve used for high-pressure kerosene constant-speed hydraulic motor |
| CN106969251A (en) * | 2017-03-21 | 2017-07-21 | 宁波上中下自动变速器有限公司 | A kind of flow divider and its hydraulic system of lubrication for vehicle |
| CN106969251B (en) * | 2017-03-21 | 2019-05-24 | 宁波上中下自动变速器有限公司 | A kind of flow divider and its hydraulic system of lubrication for vehicle |
| CN111032551A (en) * | 2017-08-21 | 2020-04-17 | 麦克诺特私人有限公司 | Reel braking system |
| CN110469704A (en) * | 2018-05-10 | 2019-11-19 | 宋志平 | A kind of fast valve of average rate leakage |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1242193C (en) | 2006-02-15 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |