CN101576105A - Flushing valve - Google Patents
Flushing valve Download PDFInfo
- Publication number
- CN101576105A CN101576105A CNA2008102072899A CN200810207289A CN101576105A CN 101576105 A CN101576105 A CN 101576105A CN A2008102072899 A CNA2008102072899 A CN A2008102072899A CN 200810207289 A CN200810207289 A CN 200810207289A CN 101576105 A CN101576105 A CN 101576105A
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- Prior art keywords
- valve
- valve pocket
- pressure
- flushing
- release valve
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Abstract
The invention relates to a flushing valve, which comprises a valve block, a directional valve core, a return spring, a relief valve core, a relief valve housing, an adjusting screw rod and an adjusting nut, wherein the inside of the valve block is provided with a directional valve cavity, a low pressure oil duct, a high pressure oil duct and a relief valve cavity; both surfaces of the low pressure oil duct and the high pressure oil duct are provided with a low pressure oil port, a high pressure oil port and a flushing oil port; and the directional valve core is arranged in the directional valve cavity, and the relief valve core is arranged in the relief valve cavity. The flushing valve has the advantages of large-scale stepless adjustable flushing flow rate, can change the flushing flow rate without replacing the flushing valve, and can be applied to hydraulic motors with different specifications.
Description
Technical field
The present invention relates to valve, relate in particular to and be used for the flushing valve that oil hydraulic motor prevents that oil hydraulic motor is overheated.
Background technique
Flushing valve is used to prevent that oil hydraulic motor is overheated.Hydraulic oil from low voltage side leaks in the oil hydraulic motor housing, flows into fuel tank with the housing draining then.Flushing valve at present mainly contains built-in and external two kinds, but flushing flow rate is all unadjustable, promptly be installed on the oil hydraulic motor after, unless the flushing valve of replacing different size otherwise can not change flushing flow rate.As the external flushing valve that BOSCH-REXROTH company produces, be to change flushing flow rate by the throttling sheet of changing flushing valve.
Summary of the invention
Technical problem to be solved by this invention provides a kind of flushing valve of large-scale stepless adjustable flushing flow rate, and this flushing valve does not need to change flushing flow rate by changing flushing valve, can be applicable on the oil hydraulic motor of different size.
In order to solve the problems of the technologies described above, the present invention adopts following technological scheme:
A kind of flushing valve is characterized in that comprising: valve piece, direction spool, returning spring, pressure releasing valve core, pressure release valve pocket, adjusting screw rod and adjusting nut;
The fast inside of described valve has low pressure oil duct, high-pressure oil duct, the pressure release valve pocket that direction valve pocket and an end all communicate with the direction valve pocket; The low pressure oil duct and the high-pressure oil duct the other end communicate with the low pressure hydraulic fluid port and the high pressure hydraulic fluid port on valve piece surface respectively, and the other end of pressure release valve pocket is the release valve port of straight line connecting valve piece outside; Valve piece surface also has the flushing hydraulic fluid port that is communicated with the pressure release valve pocket;
Described direction spool is located in the direction valve pocket, and its middle part has on circumference at the direction spool breach that to-and-fro motion selectively is communicated with low pressure oil duct and pressure release valve pocket or cut off in the direction valve pocket;
Described returning spring is located between direction valve pocket and the direction spool;
Described pressure releasing valve core is located at the correspondence flushing hydraulic fluid port position in the pressure release valve pocket, and its to-and-fro motion in the pressure release valve pocket selectively is communicated with punching press hydraulic fluid port and pressure release valve pocket;
During described pressure release valve pocket is packed the pressure release valve pocket into from the release valve port;
Described adjusting screw rod is positioned at the release valve pocket, and it stretches between end of release valve pocket and the pressure releasing valve core and is provided with Regulation spring, stretches out on the other end of release valve pocket to be rotary with described adjusting nut.
Adopt technique scheme, high pressure oil from the high pressure hydraulic fluid port through high-pressure oil duct approach axis valve pocket, the pushing direction spool moves to opposite side, breach is communicated with low pressure oil duct and pressure release valve pocket, at this moment low pressure oil just enters the pressure release valve pocket through the low pressure oil duct from the low pressure hydraulic fluid port, promote pressure releasing valve core and make flushing hydraulic fluid port and pressure release valve pocket, low pressure oil just can flow out from the flushing hydraulic fluid port, realizes the flushing to the oil hydraulic motor housing; The tension force of regulating Regulation spring by the knob adjusting nut comes the step-less adjustment pressure releasing valve core to open the size of flushing hydraulic fluid port in addition, realizes the control of flow and and then can satisfy and be applied on the different oil hydraulic motors.Therefore, flushing valve of the present invention has the advantage of large-scale stepless adjustable flushing flow rate, does not need to change flushing flow rate by changing flushing valve, can be applicable on the oil hydraulic motor of different size.
Description of drawings
The present invention is described in detail below in conjunction with the drawings and specific embodiments:
Fig. 1 is embodiment 1 a structural representation;
Fig. 2 be Fig. 1 A-A to sectional view;
Fig. 3 is the fast structural representation of embodiment 2 valve;
Fig. 4 is embodiment 2 a structural representation.
Embodiment
Embodiment 1
As depicted in figs. 1 and 2, the flushing valve of present embodiment is integrated on the valve piece 300 by directional control valve 100 and pressure-relief valve 200 and constitutes.
Wherein valve piece 300 inside have direction valve pocket 301, low pressure oil duct 302, high-pressure oil duct 303, pressure release valve pocket 304, valve piece upper surface has low pressure hydraulic fluid port 305 respectively, high pressure hydraulic fluid port 306, flushing hydraulic fluid port 307, low pressure oil duct 302 1 ends are communicated with direction valve pocket 301, the other end communicates with low pressure hydraulic fluid port 305, high-pressure oil duct 303 1 ends are communicated with direction valve pocket 301, the other end communicates with high pressure hydraulic fluid port 303, pressure release valve pocket 304 1 ends also are communicated with direction valve pocket 304, the other end is the release valve port 308 of straight line connecting valve piece outside, flushing hydraulic fluid port 307 also communicates with pressure release valve pocket 304, in the present embodiment, low pressure oil duct 302, high-pressure oil duct 303 symmetries are positioned at pressure release valve pocket 304 both sides, low pressure hydraulic fluid port 305, high pressure hydraulic fluid port 306 also symmetry is positioned at the both sides of washing hydraulic fluid port 307.
For easy to assembly and play the role of positioning, pressure release valve pocket 304 is designed to step hole.Pressure-relief valve 200 has pressure releasing valve core 201, release valve pocket 202, Regulation spring 203, adjusting screw rod 204 and adjusting nut 205.Pressure releasing valve core 201 is installed in the position of corresponding flushing hydraulic fluid port 307 in the pressure release valve pocket 304, and pressure releasing valve core 201 selectively will wash hydraulic fluid port 307 and the cut-out of pressure release valve pocket 304 connected sums moving up and down of flushing hydraulic fluid port 307 positions.The top position that is positioned at flushing hydraulic fluid port 307 at pressure release valve pocket 304 has step 401, and this step 401 can limit pressure releasing valve core 201 to be continued to move upward, and plays the role of positioning.
Pressure release valve pocket 202 is packed into from pressure release valve port 308 in the pressure release valve pocket 304, and pressure release valve pocket 202 tops have a spring chamber 212, and these spring chamber 212 bottoms are provided with a spring seat 402, and Regulation spring 203 is located between spring seat 402 and the pressure releasing valve core 201.Position in order to move downward hydraulic valve core, described pressure releasing valve core 201 bottoms have the positioning rod 211 that backstop pressure releasing valve core 201 moves downward.
The bottom of pressure release valve pocket 202 has tapped hole, and adjusting screw rod 204 is installed in this tapped hole, and an end withstands spring seat 402, and the other end stretches out outside the pressure release valve pocket 202, and adjusting nut 205 turn-knobs are on this termination.
The working method of this embodiment's flushing valve is such:
High pressure oil from high pressure hydraulic fluid port 305 through the high-voltage oil cavity 106 of high-pressure oil duct 303 approach axis valve pockets 301, pushing direction spool 102 moves to opposite side, breach 112 is communicated with low pressure oil duct 302 and pressure release valve pocket 304, at this moment low pressure oil just enters the pressure release valve pocket 304 through low pressure oil duct 302 from low pressure hydraulic fluid port 305, promoting pressure releasing valve core 201 is communicated with flushing hydraulic fluid port 307 and pressure release valve pocket 304, low pressure oil just can flow out from flushing hydraulic fluid port 307, realizes the flushing to the oil hydraulic motor housing; In addition.The size that the tension force of regulating Regulation spring 203 by knob adjusting nut 205 comes step-less adjustment pressure releasing valve core 201 to open flushing hydraulic fluid ports 307 realizes the control of flow and and then can satisfy and be applied on the different oil hydraulic motors.
Embodiment 2
For realizing preferable performance and processing, assembling, present embodiment provides a more excellent mode of execution.
As Fig. 3, the valve block structure of present embodiment is also similar to embodiment 1, and just direction valve pocket 301 is slightly different with embodiment 1 with pressure release valve pocket 304 structures, is designed to cooperate the step hole that adapts with other parts of present embodiment.
Compare with embodiment 1, also be provided with direction valve pocket 501 in the direction valve pocket 301, increasing direction valve pocket 501 is for easy to process, realizes and 102 good the cooperating of direction spool.The position of the corresponding respectively low pressure oil duct 302 of this direction valve pocket 501, high-pressure oil duct 303 and pressure release valve pocket 304 has oilhole 502.Direction spool 102 two end part axial location have the axial oil duct 503 that is communicated to low pressure oil pocket 104, high-voltage oil cavity 106 respectively, and the position of corresponding respectively low pressure oil duct 302, high-pressure oil duct 303 has the throttle orifice that is communicated to axial oil duct 503 504 radially.
Also be provided with pressure release valve seat 505 in pressure release valve pocket 304 middle and upper parts, between pressure release valve seat 505 and pressure release valve pocket 202, be provided with sleeve 506, the position of corresponding flushing hydraulic fluid port 307 has window 507 on the sleeve 506, pressure releasing valve core 201 is arranged in the sleeve 506, it is the ladder barrel type spool of " Y " shape for the cross section, the corresponding window 507 of the contact position of pressure release valve seat 505 and pressure releasing valve core 201.Have the aperture 508 of the spring chamber 212 that is communicated with pressure release valve pocket 202 in the bottom of ladder barrel type spool.This aperture 508 can make the hydraulic oil in the spring chamber 212 flow out rapidly, makes being active in one's movements of pressure releasing valve core 201.
Above-mentioned is exactly two embodiments of flushing valve of the present invention, but should be understood that, the definition of the foregoing description mesolow oil duct, high-pressure oil duct, low pressure hole, pressure hole title and the qualification of position are convenient in order to describe in specification, low pressure oil duct and high-pressure oil duct, low pressure hole and pressure hole are the same structures of symmetry in fact, in the actual application, can choose one of them oil duct wantonly, oilhole is low pressure oil duct, low pressure oilhole, another then is high-pressure oil duct, high pressure oilhole.In addition, for guaranteeing the sealing of whole flushing valve, the corresponding position between the corresponding part also is provided with seal ring 509, since this measure habitual measure well known to those skilled in the art, just no longer too much description here,
By the foregoing description, as can be seen, flushing valve of the present invention has the advantage of large-scale stepless adjustable flushing flow rate, does not need to change flushing flow rate by changing flushing valve, can be applicable on the oil hydraulic motor of different size.
But, one skilled in the art would recognize that above-mentioned embodiment is exemplary, be to be the restriction that this patent is comprised scope in order better to make those skilled in the art can understand this patent, can not to be interpreted as; So long as according to spirit that this patent discloses done anyly be equal to change or modify, all fall into the scope that this patent comprises.
Claims (9)
1, a kind of flushing valve is characterized in that comprising: valve piece, direction spool, returning spring, pressure releasing valve core, pressure release valve pocket, adjusting screw rod and adjusting nut;
The fast inside of described valve has low pressure oil duct, high-pressure oil duct, the pressure release valve pocket that direction valve pocket and an end all communicate with the direction valve pocket; The low pressure oil duct and the high-pressure oil duct the other end communicate with the low pressure hydraulic fluid port and the high pressure hydraulic fluid port on valve piece surface respectively, and the other end of pressure release valve pocket is the release valve port of straight line connecting valve piece outside; Valve piece surface also has the flushing hydraulic fluid port that is communicated with the pressure release valve pocket;
Described direction spool is located in the direction valve pocket, and its middle part has on circumference at the direction spool breach that to-and-fro motion selectively is communicated with low pressure oil duct and pressure release valve pocket or cut off in the direction valve pocket;
Described returning spring is located between direction valve pocket and the direction spool;
Described pressure releasing valve core is located at the correspondence flushing hydraulic fluid port position in the pressure release valve pocket, and its to-and-fro motion in the pressure release valve pocket selectively is communicated with punching press hydraulic fluid port and pressure release valve pocket;
During described pressure release valve pocket is packed the pressure release valve pocket into from the release valve port;
Described adjusting screw rod is positioned at the release valve pocket, and it stretches between end of release valve pocket and the pressure releasing valve core and is provided with Regulation spring, stretches out on the other end of release valve pocket to be rotary with described adjusting nut.
2, flushing valve according to claim 1 is characterized in that: described direction valve pocket one end connecting valve piece outside which is provided with the direction valve gap.
3, flushing valve according to claim 1 is characterized in that: the top position that is positioned at the flushing hydraulic fluid port of described pressure release valve pocket has the step that the backstop pressure releasing valve core moves upward; The pressure releasing valve core bottom has the positioning rod that the backstop pressure releasing valve core moves downward.
4, flushing valve according to claim 1 is characterized in that: also be provided with the direction valve pocket in the described direction valve pocket, the position of the corresponding respectively low pressure oil duct of this direction valve pocket, high-pressure oil duct and pressure release valve pocket has oilhole.
5, flushing valve according to claim 1, it is characterized in that: described pressure release valve pocket middle and upper part also is provided with the pressure release valve seat, between pressure release valve seat and pressure release valve pocket, be provided with sleeve, the position of corresponding flushing hydraulic fluid port has window on the sleeve, pressure releasing valve core is arranged in the sleeve, the corresponding window of the contact position of pressure release valve seat and pressure releasing valve core.
6, flushing valve according to claim 5, it is characterized in that: described direction spool two end part axial location has the axial oil duct that is communicated to low pressure oil pocket, high-voltage oil cavity respectively, and the position of corresponding respectively low pressure oil duct, high-pressure oil duct has the throttle orifice that is communicated to axial oil duct radially.
7, flushing valve according to claim 5 is characterized in that: described pressure releasing valve core is the ladder barrel type spool that the cross section is " Y " shape.
8, flushing valve according to claim 7 is characterized in that: the bottom of described ladder barrel type spool has the aperture of the spring chamber that is communicated with the pressure release valve pocket.
9, according to claim 1 or 4 described flushing valves, it is characterized in that: described returning spring has two, is arranged at respectively between direction spool two ends and the valve pocket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102072899A CN101576105B (en) | 2008-12-18 | 2008-12-18 | Flushing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102072899A CN101576105B (en) | 2008-12-18 | 2008-12-18 | Flushing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101576105A true CN101576105A (en) | 2009-11-11 |
| CN101576105B CN101576105B (en) | 2012-06-20 |
Family
ID=41271130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102072899A Active CN101576105B (en) | 2008-12-18 | 2008-12-18 | Flushing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101576105B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269193A (en) * | 2011-07-05 | 2011-12-07 | 宁波斯达弗液压传动有限公司 | External self-cooled switch valve of hydraulic motor, and method thereof |
| CN104389836A (en) * | 2014-11-29 | 2015-03-04 | 南京萨伯工业设计研究院有限公司 | Motor flushing valve seat and machining method thereof |
| CN105041784A (en) * | 2015-06-24 | 2015-11-11 | 海特克液压有限公司 | Flushing valve |
| CN105179348A (en) * | 2015-09-15 | 2015-12-23 | 宁波斯达弗液压传动有限公司 | Built-in flushing and cooling valve of hydraulic motor |
| CN105822828A (en) * | 2016-05-19 | 2016-08-03 | 龙工（上海）精工液压有限公司 | Dismountable flush valve internal limiting structure |
| CN108591152A (en) * | 2018-04-13 | 2018-09-28 | 浙江大学 | A kind of hydraulic motor rotary valve all-in-one machine independently coupled |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CS213682B1 (en) * | 1979-12-22 | 1982-04-09 | Ivo Schwaller | Valve for the control of oil flow through the cooler |
| FR2655702B1 (en) * | 1989-12-08 | 1992-03-20 | Peugeot | DEVICE FORMING CONTROL VALVE FOR A LUBRICATION CIRCUIT OF A HEAT ENGINE. |
| JP2002098245A (en) * | 2000-09-21 | 2002-04-05 | Denso Corp | Flow control valve, and cooling system for internal combustion engine using the same |
| JP2003185299A (en) * | 2001-12-20 | 2003-07-03 | Fuji Koki Corp | Combination valve |
| DE10333236B4 (en) * | 2003-07-21 | 2013-06-27 | Volkswagen Ag | Control valve for controlling a volume flow, in particular for controlling a coolant flow for cooling the clutch of a dual-clutch transmission of a motor vehicle |
| DE102006053307A1 (en) * | 2006-11-13 | 2008-05-15 | Robert Bosch Gmbh | Valve for controlling volume flows |
| CN201344294Y (en) * | 2008-12-18 | 2009-11-11 | 上海电气液压气动有限公司 | Adjustable cooling valve |
-
2008
- 2008-12-18 CN CN2008102072899A patent/CN101576105B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269193A (en) * | 2011-07-05 | 2011-12-07 | 宁波斯达弗液压传动有限公司 | External self-cooled switch valve of hydraulic motor, and method thereof |
| CN104389836A (en) * | 2014-11-29 | 2015-03-04 | 南京萨伯工业设计研究院有限公司 | Motor flushing valve seat and machining method thereof |
| CN105041784A (en) * | 2015-06-24 | 2015-11-11 | 海特克液压有限公司 | Flushing valve |
| CN105179348A (en) * | 2015-09-15 | 2015-12-23 | 宁波斯达弗液压传动有限公司 | Built-in flushing and cooling valve of hydraulic motor |
| CN105822828A (en) * | 2016-05-19 | 2016-08-03 | 龙工（上海）精工液压有限公司 | Dismountable flush valve internal limiting structure |
| CN108591152A (en) * | 2018-04-13 | 2018-09-28 | 浙江大学 | A kind of hydraulic motor rotary valve all-in-one machine independently coupled |
| CN108591152B (en) * | 2018-04-13 | 2019-10-22 | 浙江大学 | A kind of hydraulic motor rotary valve all-in-one machine independently coupled |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101576105B (en) | 2012-06-20 |
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