CN104235098A - Hydraulic valve device - Google Patents
Hydraulic valve device Download PDFInfo
- Publication number
- CN104235098A CN104235098A CN201310716430.9A CN201310716430A CN104235098A CN 104235098 A CN104235098 A CN 104235098A CN 201310716430 A CN201310716430 A CN 201310716430A CN 104235098 A CN104235098 A CN 104235098A
- Authority
- CN
- China
- Prior art keywords
- runner
- oil pocket
- valve
- oil
- valve body
- 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.)
- Granted
Links
Landscapes
- Safety Valves (AREA)
- Check Valves (AREA)
Abstract
The invention discloses a hydraulic valve device which comprises a valve body, a one-way valve, a compensation valve, a check valve and a main valve. The one-way valve is used for detecting whether pressure of an oil inlet cavity is highest load pressure or not, the main valve is mounted on the inner cavity of the valve body and is capable of sliding leftwards and rightwards to reverse or staying in the middle, the main valve divides the valve body into a flow passage T, a flow passage A, a flow passage B, an oil outlet flow passage and an oil inlet flow passage for return oil, a piston is arranged in the valve body, an effective end surface of the piston is basically equal to an effective end surface of a valve spool, discharge flow of a hydraulic pump is fed back and controlled by controlling pressure difference produced in opening area of liquid flow of pressurized liquid, and if the pressure difference is small, the discharge flow is increased, otherwise the flow is decreased. Therefore, the hydraulic pump can discharge flow according to needs of a circuit, and the effect of energy conservation is achieved.
Description
Technical field
The present invention relates to the hydraulic control valve of planting and relating to for choosing highest load pressure compensation and controlled variable pump, especially relate to a kind of fluid pressure valve device.
Background technique
In general oil hydraulic circuit, oil hydraulic pump emission path configures multiple hydraulicdirectional control valve, and by switching hydraulicdirectional control valve to each actuator supply pressurized liquid.Time this while to multiple actuator's supply pressurized liquid, therefore liquid preferentially to the actuator of low induced pressure, and can reduce or stop the actuator of supply high capacity.
Current existing oil hydraulic circuit is all configure pressure-compensated valve between hydraulicdirectional control valve and actuator, detect highest load pressure, namely the highest load pressure in all actuators, by the highest load pressure detected being put on each pressure-compensated valve, thus it is substantially equal with highest load pressure to make each hydraulicdirectional control valve outlet pressure unanimously bring up to, and make whereby each hydraulicdirectional control valve simultaneously commutation work time, the allotment ratio that the pressurized liquid commutated by each hydraulic pressure is proportional to their open area supplies each actuator.But existing hydrovalve pressure difference is unstable, oil hydraulic pump can not be made by the flow needed for the discharge of loop, and its energy-saving effect is poor.
Summary of the invention
The object of the invention is to solve above-mentioned Problems existing, provide a kind of structure simple, low cost, energy-saving and emission-reduction, a kind of fluid pressure valve device that stability is high.
The technological scheme realizing the object of the invention is: a kind of fluid pressure valve device, comprise valve body, for detecting one-way valve, recuperation valve, safety check that whether the pressure of oil-feed cavity volume be highest load pressure and being arranged on main valve body cavity with can horizontally slip commutation or neutrality, described main valve is divided into oil return T runner, A runner, B runner, fuel-displaced runner and oil-feed runner valve body, be provided with piston in described valve body, the effective end face of described piston is substantially equal with the effective end face of spool.
Main valve described in technique scheme comprises first segment chute, second section chute, the 3rd throttling groove, the 4th throttling groove, the 5th throttling groove and the 6th throttling groove, and a described throttling groove and second section chute control the uninterrupted flowing into oil-feed cavity volume to the left or to the right from P mouth respectively.
Being communicated with of the second oil pocket and left side the 3rd oil pocket on the left of valve body is set up or blocked to 3rd throttling groove described in technique scheme, described left side second oil pocket is communicated to T hydraulic fluid port through left side second runner, described 4th throttling groove is set up or is blocked left side first oil pocket of valve body and being communicated with of left side second oil pocket, and described left side second oil pocket is communicated to A hydraulic fluid port through left side first flow.
Right side second oil pocket that valve body was set up or blocked to 5th throttling groove described in technique scheme is communicated with right side the 3rd oil pocket, right side the second oil pocket is communicated to B hydraulic fluid port through right side first flow, 6th throttling groove stands or blocks being communicated with of the first oil pocket and right side second oil pocket on the right side of valve body, and right side first oil pocket is communicated to T hydraulic fluid port through right side second runner.
Described in technique scheme, one-way valve has steel ball, and described steel ball is arranged in the first one-way valve vestibule, and screw plug is arranged on the first unidirectional valve opening, and oil-feed cavity volume is input to a LS runner and the 2nd LS runner by the second unidirectional valve opening.
Described in technique scheme, recuperation valve has spool, and described spool left side the 4th oil pocket of setting up or block valve body and left side the 3rd runner are communicated with right side the 3rd runner; One LS runner and the 2nd LS runner passing hole are input to oil pocket, the pressure of described oil pocket acts on described piston, described left side the 4th oil pocket pressure acts on spool, described left side the 4th oil pocket is communicated with cavity volume by the throttle orifice on spool, and described cavity volume is communicated with left side first oil pocket with left side the 3rd runner, right side the 3rd runner, right side the 3rd oil pocket successively.
In technique scheme, when chamber pressure raises suddenly, the spool conical surface on spool and the valve body conical surface on valve body form a safety check.
First hole of valve body described in technique scheme is arranged on described spool, and the second hole is installed on valve pocket, and described first hole and the second hole and valve pocket center line are positioned on same central axis.
Oil return T runner described in technique scheme is made up of T hydraulic fluid port, right side first oil pocket, left side the 3rd oil pocket, left side second runner and right side second runner, and A runner is made up of left side second oil pocket, left side first flow 23 and A hydraulic fluid port; Fuel-displaced runner is right side the 3rd oil pocket, left side first oil pocket, left side the 3rd runner, right side the 3rd runner and oil pocket composition; B runner is made up of right side second oil pocket, right side first flow and B hydraulic fluid port, and oil-feed runner is made up of oil-feed cavity volume and left side the 4th oil pocket.
After adopting technique scheme, the present invention has following positive effect: the present invention is the pressure difference that open area that pressurized liquid passes through to control its fluid flow size produces, feed back and the discharge flow rate of hydraulic control pump, as pressure reduction is little, then strengthen discharge flow rate, otherwise, then reduce flow, make oil hydraulic pump need discharge flow rate by loop, reach energy-conservation effect.
Accompanying drawing explanation
In order to make content of the present invention more easily be clearly understood, below according to specific embodiment also by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is structural representation of the present invention;
Fig. 2 is the local A-A sectional view of Fig. 1;
Reference character: 1, valve body, 2, T hydraulic fluid port, 3, P mouth, 4, main valve, 5, right side the first oil pocket, 6, right side the second oil pocket, 7, right side the 3rd oil pocket, 8, screw plug, 9, steel ball, 10, second unidirectional valve opening, 11, oil-feed cavity volume, 12, left side the first oil pocket, 13, left side the second oil pocket, 14, left side the 3rd oil pocket, 15, first segment chute, 16, second section chute, 17, left side the 3rd runner, 18, spool, 20, piston, 21, right side the 3rd runner, 22, right side first flow, 23, left side first flow, 24, left side the 4th oil pocket, 30, oil pocket, 31, valve pocket, 32, 3rd throttling groove, 33, 4th throttling groove, 34, 5th throttling groove, 35, 6th throttling groove, 38, one LS runner, 40, throttle orifice, 41, the valve body conical surface, 42, cavity volume, 45, 2nd LS runner, 46, the spool conical surface, 48, left side the second runner, 49, right side the second runner, 50, first unidirectional valve opening, 51, inner chamber, 52, first hole, 53, second hole.
Embodiment
See shown in Fig. 1 and Fig. 2, a kind of fluid pressure valve device, comprise valve body 1, for detecting one-way valve, recuperation valve, safety check that whether the pressure of oil-feed cavity volume 11 be highest load pressure and being arranged on the main valve 4 valve body 1 inner chamber 51 with can horizontally slip commutation or neutrality, main valve 4 is divided into oil return T runner, A runner, B runner, fuel-displaced runner and oil-feed runner valve body 1, be provided with piston 20 in valve body 1, piston 20 effectively end face is substantially equal with the effective end face of spool 18.
As shown in Figure 1, main valve 4 comprises the uninterrupted that first segment chute 15, second section chute 16, the 3rd throttling groove 32, the 4th throttling groove 33, the 5th throttling groove 34 and the 6th throttling groove 35, throttling groove 15 and second section chute 16 control to flow into from P mouth 3 oil-feed cavity volume 11 to the left or to the right respectively.Being communicated with of the second oil pocket 13 and left side the 3rd oil pocket 14 on the left of valve body 1 is set up or blocked to 3rd throttling groove 32, left side the second oil pocket 14 is communicated to T hydraulic fluid port 2 through left side second runner 48, left side first oil pocket 12 of valve body 1 and being communicated with of left side second oil pocket 13 are set up or blocked to 4th throttling groove 33, and left side second oil pocket 13 is communicated to A hydraulic fluid port through left side first flow 23.Right side second oil pocket 6 that valve body 1 was set up or blocked to 5th throttling groove 34 is communicated with right side the 3rd oil pocket 7, right side the second oil pocket 6 is communicated to B hydraulic fluid port through right side first flow 22,6th throttling groove 35 is vertical or block being communicated with of the first oil pocket 5 and right side second oil pocket 6 on the right side of valve body 1, and right side first oil pocket 5 is communicated to T hydraulic fluid port 2 through right side second runner 49.
One-way valve has steel ball 9, and steel ball 9 is arranged in the first unidirectional valve opening 50 chamber, and screw plug 8 is arranged on the first unidirectional valve opening 50, and oil-feed cavity volume 11 is input to a LS runner 38 and the 2nd LS runner 45 by the second unidirectional valve opening 10.When whether the pressure surveying oil-feed cavity volume 11 is highest load pressure, opens steel ball 9 with this logic "Yes" or " non-", pressure signal is uni-directionally input to a LS runner 38 and the 2nd LS runner 45 by oil-feed cavity volume 11 by the second unidirectional valve opening 10.
Recuperation valve has spool 18, and spool 18 left side the 4th oil pocket 24 of setting up or block valve body 1 and left side the 3rd runner 17 are communicated with right side the 3rd runner 21; One LS runner 38 and the 2nd LS runner 45 passing hole are input to oil pocket 30, the pressure of oil pocket 30 acts on piston 20, left side the 4th oil pocket 24 pressure acts on spool 18, left side the 4th oil pocket 24 is communicated with cavity volume 42 by the throttle orifice 40 on spool 18, and cavity volume 42 is communicated with left side first oil pocket 12 with left side the 3rd runner 17, right side the 3rd runner 21, right side the 3rd oil pocket 7 successively.The such as pressure of oil pocket 30 act on piston 20 effectively end face and the pressure of left side the 4th oil pocket 24 to act on the effective end face of spool 18 substantially equal, therefore piston 20 is delivered to the pressure size of oil pocket 30 on the effective end face of spool 18 by being rigidly connected with spool 18, making the pressure of left side the 4th oil pocket 24 be elevated to highest load pressure size just can make spool 18 move upward, and the liquid of left side the 4th oil pocket 24 just can enter cavity volume 42 by the throttle orifice 40 on spool 18.When cavity volume 42 pressure raises suddenly, the conical surface 46 on spool 18 forms a safety check with the conical surface 41 on valve body 1.First hole 52 of valve body 1 is arranged on spool 18, and the second hole 53 is installed on valve pocket 31, and the first hole 52 and the second hole 53 and valve pocket 31 center line are positioned on same central axis.
Oil return T runner is made up of T hydraulic fluid port 2, right side first oil pocket 5, left side the 3rd oil pocket 14, left side second runner 48 and right side second runner 49, and A runner is made up of left side second oil pocket 13, left side first flow 23 and A hydraulic fluid port; Fuel-displaced runner is that right side the 3rd oil pocket 7, left side first oil pocket 12, left side the 3rd runner 17, right side the 3rd runner 21 and oil pocket 42 form; B runner is made up of right side second oil pocket 6, right side first flow 22 and B hydraulic fluid port, and oil-feed runner is made up of oil-feed cavity volume 11 and left side the 4th oil pocket 24.
Above-described specific embodiment; object of the present invention, technological scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a fluid pressure valve device, it is characterized in that: comprise valve body (1), for detecting one-way valve, recuperation valve, safety check that whether the pressure of oil-feed cavity volume (11) be highest load pressure and being arranged on the main valve (4) valve body (1) inner chamber (51) with can horizontally slip commutation or neutrality, described main valve (4) is divided into oil return T runner, A runner, B runner, fuel-displaced runner and oil-feed runner valve body (1), be provided with piston (20) in described valve body (1), described piston (20) effectively end face is substantially equal with the effective end face of spool (18).
2. a kind of fluid pressure valve device according to claim 1, it is characterized in that: described main valve (4) comprises first segment chute (15), second section chute (16), the 3rd throttling groove (32), the 4th throttling groove (33), the 5th throttling groove (34) and the 6th throttling groove (35), a described throttling groove (15) and second section chute (16) control the uninterrupted flowing into oil-feed cavity volume (11) to the left or to the right from P mouth (3) respectively.
3. a kind of fluid pressure valve device according to claim 2, it is characterized in that: described 3rd throttling groove (32) is set up or blocked valve body (1) left side the second oil pocket (13) and being communicated with of left side the 3rd oil pocket (14), described left side second oil pocket (14) is communicated to T hydraulic fluid port (2) through left side second runner (48), the left side first oil pocket (12) of valve body (1) and being communicated with of left side second oil pocket (13) are set up or blocked to described 4th throttling groove (33), and described left side second oil pocket (13) is communicated to A hydraulic fluid port through left side first flow (23).
4. a kind of fluid pressure valve device according to claim 2, it is characterized in that: the right side second oil pocket (6) that valve body (1) was set up or blocked to described 5th throttling groove (34) is communicated with right side the 3rd oil pocket (7), right side the second oil pocket (6) is communicated to B hydraulic fluid port through right side first flow (22), 6th throttling groove (35) is set up or is blocked valve body (1) right side the first oil pocket (5) and being communicated with of right side second oil pocket (6), and right side first oil pocket (5) is communicated to T hydraulic fluid port (2) through right side second runner (49).
5. a kind of fluid pressure valve device according to claim 1, it is characterized in that: described one-way valve has steel ball (9), described steel ball (9) is arranged in the first unidirectional valve opening (50) chamber, screw plug (8) is arranged on the first unidirectional valve opening (50), and oil-feed cavity volume (11) is input to a LS runner (38) and the 2nd LS runner (45) by the second unidirectional valve opening (10).
6. a kind of fluid pressure valve device according to claim 1, it is characterized in that: described recuperation valve has spool (18), left side the 4th oil pocket (24) and the left side the 3rd runner (17) of valve body (1) and being communicated with of right side the 3rd runner (21) are set up or blocked to described spool (18); One LS runner (38) and the 2nd LS runner (45) passing hole are input to oil pocket (30), the pressure of described oil pocket (30) acts on described piston (20), described left side the 4th oil pocket (24) pressure acts on spool (18), described left side the 4th oil pocket (24) is communicated with cavity volume (42) by the throttle orifice (40) on spool (18), and described cavity volume (42) is communicated with left side first oil pocket (12) with left side the 3rd runner (17), right side the 3rd runner (21), right side the 3rd oil pocket (7) successively.
7. a kind of fluid pressure valve device according to claim 6, is characterized in that: when described cavity volume (42) pressure raises suddenly, and the spool conical surface (46) on spool (18) forms a safety check with the valve body conical surface (41) on valve body (1).
8. a kind of fluid pressure valve device according to claim 1, it is characterized in that: first hole (52) of described valve body (1) is arranged on described spool (18), second hole (53) is installed on valve pocket (31), and described first hole (52) and the second hole (53) and valve pocket (31) center line are positioned on same central axis.
9. a kind of fluid pressure valve device according to claim 1 or 8, it is characterized in that: described oil return T runner is made up of T hydraulic fluid port (2), right side first oil pocket (5), left side the 3rd oil pocket (14), left side second runner (48) and right side second runner (49), A runner is made up of left side second oil pocket (13), left side first flow (23) and A hydraulic fluid port; Fuel-displaced runner is made up of right side the 3rd oil pocket (7), left side first oil pocket (12), left side the 3rd runner (17), right side the 3rd runner (21) and cavity volume (42); B runner is made up of right side second oil pocket (6), right side first flow (22) and B hydraulic fluid port, and oil-feed runner is made up of oil-feed cavity volume (11) and left side the 4th oil pocket (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310716430.9A CN104235098B (en) | 2013-12-23 | 2013-12-23 | Fluid pressure valve device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310716430.9A CN104235098B (en) | 2013-12-23 | 2013-12-23 | Fluid pressure valve device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104235098A true CN104235098A (en) | 2014-12-24 |
| CN104235098B CN104235098B (en) | 2016-08-17 |
Family
ID=52223816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310716430.9A Active CN104235098B (en) | 2013-12-23 | 2013-12-23 | Fluid pressure valve device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104235098B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107504004A (en) * | 2017-09-13 | 2017-12-22 | 江苏恒立液压科技有限公司 | Novel pressure recuperation valve |
| CN108547813A (en) * | 2018-05-02 | 2018-09-18 | 宁波真格液压科技有限公司 | A kind of load-sensitive electromagnetic proportional valve |
| CN109099023A (en) * | 2018-09-29 | 2018-12-28 | 邵延荣 | Balanced valve |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3885583A (en) * | 1974-04-22 | 1975-05-27 | Hydraulic Industries | Pressure compensating valve mechanism for hydraulic control valves |
| DE19800720C2 (en) * | 1998-01-12 | 2001-10-31 | Sauer Danfoss Nordborg As Nord | Control valve for a hydraulic motor |
| CN101858368A (en) * | 2010-05-13 | 2010-10-13 | 山东泰丰液压设备有限公司 | Multiple directional control valve system for return oil throttle control with load sensitive pressure compensation |
| CN201786797U (en) * | 2010-09-30 | 2011-04-06 | 李金海 | Excavator load sensitive pressure compensation multi-way valve |
| CN103174697A (en) * | 2013-03-22 | 2013-06-26 | 江苏恒立高压油缸股份有限公司 | Hydraulic valve system with pressure compensation function |
| CN103321978A (en) * | 2012-03-20 | 2013-09-25 | 罗伯特·博世有限公司 | Hydraulic pilot valve arrangement and hydraulic valve arrangement having the same |
| CN203627377U (en) * | 2013-12-23 | 2014-06-04 | 江苏恒立液压有限公司 | Hydraulic valve device |
-
2013
- 2013-12-23 CN CN201310716430.9A patent/CN104235098B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3885583A (en) * | 1974-04-22 | 1975-05-27 | Hydraulic Industries | Pressure compensating valve mechanism for hydraulic control valves |
| DE19800720C2 (en) * | 1998-01-12 | 2001-10-31 | Sauer Danfoss Nordborg As Nord | Control valve for a hydraulic motor |
| CN101858368A (en) * | 2010-05-13 | 2010-10-13 | 山东泰丰液压设备有限公司 | Multiple directional control valve system for return oil throttle control with load sensitive pressure compensation |
| CN201786797U (en) * | 2010-09-30 | 2011-04-06 | 李金海 | Excavator load sensitive pressure compensation multi-way valve |
| CN103321978A (en) * | 2012-03-20 | 2013-09-25 | 罗伯特·博世有限公司 | Hydraulic pilot valve arrangement and hydraulic valve arrangement having the same |
| CN103174697A (en) * | 2013-03-22 | 2013-06-26 | 江苏恒立高压油缸股份有限公司 | Hydraulic valve system with pressure compensation function |
| CN203627377U (en) * | 2013-12-23 | 2014-06-04 | 江苏恒立液压有限公司 | Hydraulic valve device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107504004A (en) * | 2017-09-13 | 2017-12-22 | 江苏恒立液压科技有限公司 | Novel pressure recuperation valve |
| CN108547813A (en) * | 2018-05-02 | 2018-09-18 | 宁波真格液压科技有限公司 | A kind of load-sensitive electromagnetic proportional valve |
| CN109099023A (en) * | 2018-09-29 | 2018-12-28 | 邵延荣 | Balanced valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104235098B (en) | 2016-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203627369U (en) | Pressure compensation valve | |
| CN104481948B (en) | Stabilized pressure flow control valve and load sensitive analog valve | |
| CN104235098A (en) | Hydraulic valve device | |
| CN104265716A (en) | Ultrahigh pressure pilot operated relief valve | |
| CN204344557U (en) | A kind of ultrahigh pressure pilot operated compound relief valve | |
| CN104828702A (en) | Crane, reversing control system, and oil supply apparatus thereof | |
| CN203627377U (en) | Hydraulic valve device | |
| CN104948786A (en) | Hydraulic one-way valve | |
| CN205207311U (en) | Meso position burden flow valve, swing arm energy -saving control system and excavator | |
| CN203823173U (en) | Pilot relief valve | |
| CN103775813A (en) | Bridge-type rectifying valve block for bi-directional rotating oil pump | |
| CN105422538B (en) | The multi-passage current sharing valve of pressure adaptive | |
| US20150354173A1 (en) | Pressure compensation valve | |
| CN204083373U (en) | A kind of multi-way valve with off-load protection | |
| CN103697005B (en) | A kind of control loop of single-action hydraulic cylinder | |
| CN104235097B (en) | Pressure-compensated valve | |
| CN206129751U (en) | Hydraulic system | |
| CN104963905A (en) | Two-stage overflow unloading valve | |
| CN106438523B (en) | Hydraulic system and its control method | |
| CN205064968U (en) | Switch valve with flow regulation function | |
| CN103912534A (en) | Constant-difference overflow valve with unloading function | |
| CN104653536B (en) | A kind of load-sensitive valve | |
| CN104033436B (en) | Load-sensitive multiple directional control valve | |
| CN103410188A (en) | Hydraulic system, with load sensitive variable, for underground carry-scraper | |
| CN204704187U (en) | Overload unloading valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 213167 Wujin high tech Industrial Development Zone, Jiangsu Province, No. long hidden Road, No. 99 Applicant after: JIANGSU HENGLI HYDRAULIC CO., LTD. Address before: 213167 Wujin high tech Industrial Development Zone, Jiangsu Province, No. long hidden Road, No. 99 Applicant before: JIANGSU HENGLI HYDRAULIC CO., LTD. |
|
| COR | Change of bibliographic data | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |