CN104930005A - Unloading control valve - Google Patents
Unloading control valve Download PDFInfo
- Publication number
- CN104930005A CN104930005A CN201510321439.9A CN201510321439A CN104930005A CN 104930005 A CN104930005 A CN 104930005A CN 201510321439 A CN201510321439 A CN 201510321439A CN 104930005 A CN104930005 A CN 104930005A
- Authority
- CN
- China
- Prior art keywords
- valve
- unloading
- logical
- port
- filler opening
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Safety Valves (AREA)
Abstract
An unloading control valve solves the problems that an unloading valve is single in function and the adjusting capability of the unloading valve is poor in a system. The unloading control valve comprises a valve body, a main oil inlet, a high-pressure oil port and an oil unloading port are formed in the valve body, a one-way valve, an unloading valve and a logical valve are arranged on the valve body, the main oil inlet is communicated with the oil unloading port through the unloading valve, the unloading valve comprises an unloading valve oil inlet, an unloading valve control port and an unloading valve spring port, both the unloading valve control port and the unloading valve spring port are communicated with the main oil inlet, the logical valve comprises a logical valve oil inlet, a logical valve oil outlet, a logical valve judging oil port and a logical valve spring port, the logical valve judging oil port is communicated with the high-pressure oil port, the unloading valve spring port is communicated with the logical valve oil inlet, and the logical valve oil outlet is communicated with the oil unloading port. The unloading control valve has the advantages of movement stability, rapidness in response, long service life, wide adaptive range, control reliability and the like.
Description
Technical field
The present invention relates to a kind of hydraulic control system, be specifically related to a kind of unloading control valve.
Background technique
Unloading valve is under certain condition, can make
oil hydraulic pump off-loadvalve.Unloading valve normally one band two
twoway valves(being often solenoid valve)
relief valvebe used as initialization system (oil pump) principal pressure when function is not off-load, when unloading condition, (by the conversion of bi-bit bi-pass valve events) pressure oil directly returns fuel tank, and pressure fuel pump drops to and is approximately zero, to realize some circuit controls and to improve oil pump life, reduce power consumption.Existing unloading valve structure is comparatively simple, its control form is also comparatively simple, when being used for by this kind of unloading valve in comparatively complicated hydraulic system, often well can not carry out pressure adjustment to hydraulic system, hydraulic system energy is lost comparatively large, reduce the efficiency of system.
Summary of the invention
For solving existing unloading valve function singleness, the in systems in which problem of regulating power difference in background technique, the invention provides a kind of unloading control valve.
Technological scheme of the present invention is: a kind of unloading control valve, comprise valve body, described valve body is provided with main filler opening, high pressure hydraulic fluid port and unloading port, described valve body is provided with one-way valve, unloading valve and logical valve, described main filler opening is connected with high pressure hydraulic fluid port by one-way valve, described main filler opening is connected with unloading port by unloading valve, described unloading valve comprises unloading valve filler opening, unloading valve controls mouth and unloading valve spring mouth, described unloading valve controls mouth, unloading valve spring mouth is all connected with main filler opening, described logical valve comprises logical valve filler opening, logical valve oil outlet, logical valve judges hydraulic fluid port and logical valve spring mouth, described logical valve judges that hydraulic fluid port is connected with high pressure hydraulic fluid port, described logical valve judges that hydraulic fluid port and logical valve spring mouth are oppositely arranged, described unloading valve spring mouth is connected with logical valve filler opening, logical valve oil outlet is connected with unloading port.
As a modification of the present invention, between described unloading valve spring mouth and logical valve filler opening, be provided with the first damping hole.
As a further improvement on the present invention, the diameter of the first described damping hole is 3 to 7 millimeters.
As a further improvement on the present invention, the diameter of the first described damping hole is 5 millimeters.
As a further improvement on the present invention, the second damping hole is provided with between described unloading valve filler opening and unloading valve spring mouth.
As a further improvement on the present invention, with logical valve, described logical valve filler opening judges that hydraulic fluid port is connected, and described logical valve oil outlet is connected with logical valve spring mouth.
As a further improvement on the present invention, the two ends of described one-way valve are equipped with the detection oil duct for being connected with detection device.
The invention has the beneficial effects as follows, judged the pressure of high pressure hydraulic fluid port by logical valve, thus control main filler opening pressure oil enter system or from unloading valve pressure release, avoid the overflow energy loss of the system when transshipping, the efficiency of system improved greatly.Unloading control valve of the present invention has stable action, and rapidly, long service life, adaptive scope is wide, controls the advantages such as reliable in response.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of the embodiment of the present invention.
Accompanying drawing 2 is the sectional structure enlarged diagram of A-A in accompanying drawing 1.
Accompanying drawing 3 is the hydraulic schematic diagram of the embodiment of the present invention.
In figure, 1, valve body; 11, main filler opening; 12, high pressure hydraulic fluid port; 13, unloading port; 2, one-way valve; 3, unloading valve; 3a, unloading valve filler opening; 3b, unloading valve control mouth; 3c, unloading valve spring mouth; 4, logical valve; 4a, logical valve filler opening; 4b, logical valve oil outlet; 4c, logical valve judge hydraulic fluid port; 4d, logical valve spring mouth; 5, the first damping hole; 6, the second damping hole; 7, oil duct is detected.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention is further illustrated:
By Fig. 1 composition graphs 2, shown in 3, a kind of unloading control valve, comprise valve body 1, described valve body 1 is provided with main filler opening 11, high pressure hydraulic fluid port 12 and unloading port 13, described valve body 1 is provided with one-way valve 2, unloading valve 3 and logical valve 4, described main filler opening 11 is connected with high pressure hydraulic fluid port 12 by one-way valve 2, described main filler opening 11 is connected with unloading port 13 by unloading valve 3, described unloading valve 3 comprises unloading valve filler opening 3a, unloading valve controls mouth 3b and unloading valve spring mouth 3c, described unloading valve controls mouth 3b, unloading valve spring mouth 3c is all connected with main filler opening 11, described logical valve 4 comprises logical valve filler opening 4a, logical valve oil outlet 4b, logical valve judges hydraulic fluid port 4c and logical valve spring mouth 4d, described logical valve judges that hydraulic fluid port 4c is connected with high pressure hydraulic fluid port 12, described logical valve judges that hydraulic fluid port 4c is oppositely arranged with logical valve spring mouth 4d, and (this is oppositely arranged and refers to that logical valve judges that hydraulic fluid port 4c and logical valve spring mouth 4d drives the direction of logical valve stem movement relative, specifically, logical valve judges that hydraulic fluid port 4c and logical valve spring mouth 4d is located at the two ends of valve rod), described unloading valve spring mouth 3c is connected with logical valve filler opening 4a, logical valve oil outlet 4b is connected with unloading port 13.In course of normal operation, main filler opening oil-feed, fuel-displaced from high pressure hydraulic fluid port by one-way valve, when the load place overpressure that high pressure hydraulic fluid port is fuel-displaced, now, main filler opening can not be fuel-displaced from high pressure hydraulic fluid port, and the pressure oil of high pressure hydraulic fluid port enters logical valve and judges hydraulic fluid port, this pressure oil overcomes the pressure of logical valve spring mouth, makes the pressure oil of unloading valve spring mouth go back to unloading port from logical valve oil outlet; Now, unloading valve spring mouth place and unloading valve control the pressure that mouth place balances and are destroyed, the pressure oil of unloading valve control mouth overcomes the pressure at unloading valve spring mouth place, winner's filler opening is connected with unloading port, unloading control valve of the present invention, in the system that flow is constant, the pressure loss is little, thus avoid the energy loss of system, improve the efficiency of system.The invention has the beneficial effects as follows, judged the pressure of high pressure hydraulic fluid port by logical valve, thus control main filler opening pressure oil enter system or from unloading valve pressure release, avoid the overflow energy loss of the system when transshipping, the efficiency of system improved greatly.Unloading control valve of the present invention has stable action, and rapidly, long service life, adaptive scope is wide, controls the advantages such as reliable in response.
The first damping hole 5 is provided with between described unloading valve spring mouth 3c and logical valve filler opening 4q.Specifically, the diameter of the first described damping hole 5 is 3 to 7 millimeters.In particular, the diameter of the first described damping hole 5 is 5 millimeters.The second damping hole 6 is provided with between described unloading valve filler opening 3a and unloading valve spring mouth 3c.First damping hole makes the pressure oil between unloading valve spring mouth and logical valve filler opening circulate steadily, ensures that off-load can respond fast simultaneously.Second damping hole be arranged on off-load time ensure the pressure at unloading control mouth place to ensure that product can reliable off-load.
With logical valve, described logical valve filler opening 4a judges that hydraulic fluid port 4c is connected, described logical valve oil outlet 4b is connected with logical valve spring mouth 4d.Such structure ensures the pressure stability in unloading control cavity, ensures product action message.
The two ends of described one-way valve 2 are equipped with the detection oil duct 7 for being connected with detection device.Such structure ensures the main filler opening of product and the pressure of high pressure hydraulic fluid port, is convenient to staff and understands situation or detection system pressure condition.
Every technician's notice: although the present invention describes according to above-mentioned embodiment, invention thought of the present invention is not limited in this invention, and the repacking of any utilization inventive concept, all will include in this patent scope of patent protection.
Claims (7)
1. a unloading control valve, comprise valve body (1), it is characterized in that: described valve body (1) is provided with main filler opening (11), high pressure hydraulic fluid port (12) and unloading port (13), described valve body (1) is provided with one-way valve (2), unloading valve (3) and logical valve (4), described main filler opening (11) is connected with high pressure hydraulic fluid port (12) by one-way valve (2), described main filler opening (11) is connected with unloading port (13) by unloading valve (3), described unloading valve (3) comprises unloading valve filler opening (3a), unloading valve controls mouth (3b) and unloading valve spring mouth (3c), described unloading valve controls mouth (3b), unloading valve spring mouth (3c) is all connected with main filler opening (11), described logical valve (4) comprises logical valve filler opening (4a), logical valve oil outlet (4b), logical valve judges hydraulic fluid port (4c) and logical valve spring mouth (4d), described logical valve judges that hydraulic fluid port (4c) is connected with high pressure hydraulic fluid port (12), described logical valve judges that hydraulic fluid port (4c) and logical valve spring mouth (4d) are oppositely arranged, described unloading valve spring mouth (3c) is connected with logical valve filler opening (4a), logical valve oil outlet (4b) is connected with unloading port (13).
2. a kind of unloading control valve according to claim 1, is characterized in that being provided with the first damping hole (5) between described unloading valve spring mouth (3c) and logical valve filler opening (4q).
3. a kind of unloading control valve according to claim 2, is characterized in that the diameter of described the first damping hole (5) is 3 to 7 millimeters.
4. a kind of unloading control valve according to claim 3, is characterized in that the diameter of described the first damping hole (5) is 5 millimeters.
5. a kind of unloading control valve according to claim 2, is characterized in that being provided with the second damping hole (6) between described unloading valve filler opening (3a) and unloading valve spring mouth (3c).
6. a kind of unloading control valve according to claim 1, it is characterized in that described logical valve filler opening (4a) and logical valve judge that hydraulic fluid port (4c) is connected, described logical valve oil outlet (4b) is connected with logical valve spring mouth (4d).
7. a kind of unloading control valve according to claim 1, is characterized in that the two ends of described one-way valve (2) are equipped with the detection oil duct (7) for being connected with detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510321439.9A CN104930005A (en) | 2015-06-12 | 2015-06-12 | Unloading control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510321439.9A CN104930005A (en) | 2015-06-12 | 2015-06-12 | Unloading control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104930005A true CN104930005A (en) | 2015-09-23 |
Family
ID=54117342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510321439.9A Pending CN104930005A (en) | 2015-06-12 | 2015-06-12 | Unloading control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104930005A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4020867A (en) * | 1974-08-26 | 1977-05-03 | Nisshin Sangyo Kabushiki Kaisha | Multiple pressure compensated flow control valve device of parallel connection used with fixed displacement pump |
| CN102251996A (en) * | 2011-07-05 | 2011-11-23 | 天津柳工机械有限公司 | Engineering mechanical load sensing hydraulic system |
| CN202449733U (en) * | 2012-01-17 | 2012-09-26 | 江苏紫石机械制造有限公司 | Unloading energy-saving control system of variable pump of electro-hydraulic grab |
| CN204704185U (en) * | 2015-06-12 | 2015-10-14 | 圣邦集团有限公司 | A kind of unloading control valve |
-
2015
- 2015-06-12 CN CN201510321439.9A patent/CN104930005A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4020867A (en) * | 1974-08-26 | 1977-05-03 | Nisshin Sangyo Kabushiki Kaisha | Multiple pressure compensated flow control valve device of parallel connection used with fixed displacement pump |
| CN102251996A (en) * | 2011-07-05 | 2011-11-23 | 天津柳工机械有限公司 | Engineering mechanical load sensing hydraulic system |
| CN202449733U (en) * | 2012-01-17 | 2012-09-26 | 江苏紫石机械制造有限公司 | Unloading energy-saving control system of variable pump of electro-hydraulic grab |
| CN204704185U (en) * | 2015-06-12 | 2015-10-14 | 圣邦集团有限公司 | A kind of unloading control valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103615424B (en) | Direct moving type hydraulic thread cartridge buffer overflow valve | |
| CN107191653B (en) | Water hammer bleeder valve | |
| US11149873B2 (en) | Valve system with isolation device | |
| CN104265716B (en) | A kind of super-pressure pilot operated compound relief valve | |
| CN104989690B (en) | Overload relief valve | |
| CN201753790U (en) | Safety valve for multi-way valve | |
| CN109826984B (en) | Pilot-operated safety valve | |
| CN204704185U (en) | A kind of unloading control valve | |
| CN201973158U (en) | High-speed damping unloading valve for automobile shock absorber piston | |
| CN201513402U (en) | Pilot-operated type proportional relief valve | |
| CN202301256U (en) | Hydraulic unloading valve | |
| CN104930005A (en) | Unloading control valve | |
| CN208381413U (en) | A kind of pilot-operated type threeway proportional pressure-reducing valve | |
| CN204253482U (en) | A kind of two-way unloading valve | |
| CN101245779B (en) | Oil balancing system of reciprocating oil isolation membrane pump fluid end | |
| CN101893007B (en) | Plunger case lifting hydraulic control system | |
| CN208474211U (en) | A kind of Full-hydraulic braking apparatus filling liquid valve group and its control system | |
| CN104948790A (en) | Rapid and stable direct-driving overflow valve | |
| CN101886643B (en) | Control valve special for hydraulic lifting of plunger cylinder | |
| CN102072216B (en) | Energy-saving reducing valve for hydraulic system | |
| CN205349902U (en) | One -way balanced valve | |
| CN201322016Y (en) | Oil pipe explosion-proof device | |
| CN204553939U (en) | Load holding valve | |
| CN211343538U (en) | Permanent magnet spring type overflow valve pilot valve | |
| CN210978036U (en) | Integrated hydraulic system valve group |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150923 |
|
| RJ01 | Rejection of invention patent application after publication |