CN104763690A - Unloading loop valve under stable system pressure - Google Patents
Unloading loop valve under stable system pressure Download PDFInfo
- Publication number
- CN104763690A CN104763690A CN201510131652.3A CN201510131652A CN104763690A CN 104763690 A CN104763690 A CN 104763690A CN 201510131652 A CN201510131652 A CN 201510131652A CN 104763690 A CN104763690 A CN 104763690A
- Authority
- CN
- China
- Prior art keywords
- valve
- system pressure
- hydraulic pump
- unloading
- oil hydraulic
- 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
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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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
-
- 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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/007—Overload
Abstract
The invention provides an unloading loop valve under stable system pressure. The unloading loop valve under stable system pressure comprises a hydraulic pump and is characterized by further comprising a three-position four-way solenoid valve, an unloading valve, an energy storing device and a hydraulic cylinder, wherein the energy storing device and the hydraulic pump are connected with the three-position four-way solenoid valve through the pipelines; the three-position four-way solenoid valve is connected with two sides of the hydraulic cylinder through two pipelines; the hydraulic pump is connected with the unloading valve through the pipeline, wherein the hydraulic pump is an one-way fixed-volume hydraulic pump; an overflowing valve for preventing is connected beside the hydraulic pump through the pipeline. With the adoption of the unloading loop valve under stable system pressure, the problems that system pressure is unstable during unloading by the unloading loop in the prior art and the whole system use is easily influenced, the unstable system pressure leads to poor safety and reliability of the whole system and a certain of potential risk occurs, can be solved. The unloading loop valve under stable system pressure is simple in structure, convenient to use, and quick to unload; the system pressure is kept stable all the time; the safety and reliability are improved.
Description
Technical field
The present invention relates to relief circuit valve, particularly relate to the relief circuit valve that a kind of system pressure is stable.
Background technique
Current relief circuit valve, in unloading process, the pressure of system is stable not, easily affects the use of whole system, and simultaneously because system pressure is unstable, the safety reliability of whole system is poor, there is certain potential safety hazard.
Summary of the invention
In order to solve in prior art relief circuit valve in unloading process, the pressure of system is stable not, the easy use affecting whole system, simultaneously because system pressure is unstable, the safety reliability of whole system is poor, there is the problem of certain potential safety hazard, the invention provides a kind of structure simple, easy to use, can quick relief, and remain that system pressure is stablized, the relief circuit valve that the system pressure that safety reliability is higher is stable.
In order to solve the problem, the technical solution used in the present invention is:
The relief circuit valve that a kind of system pressure is stable, comprise oil hydraulic pump, it is characterized in that: also comprise three position four-way electromagnetic valve, unloading valve, accumulator and oil hydraulic cylinder, described accumulator is connected with three position four-way electromagnetic valve by pipeline with oil hydraulic pump, and described three position four-way electromagnetic valve is connected with oil hydraulic cylinder both sides by two pipelines, and described oil hydraulic pump is connected with unloading valve by pipeline.
The relief circuit valve that aforesaid a kind of system pressure is stable, is characterized in that: described oil hydraulic pump adopts unidirectional quantitative hydraulic pump.
The relief circuit valve that aforesaid a kind of system pressure is stable, is characterized in that: at the other relief valve being connected with protective action together by pipeline of oil hydraulic pump.
The relief circuit valve that aforesaid a kind of system pressure is stable, is characterized in that: described pipeline adopts flexible pipe.
The relief circuit valve that aforesaid a kind of system pressure is stable, is characterized in that: described relief valve adopts pilot operated compound relief valve.
The relief circuit valve that aforesaid a kind of system pressure is stable, is characterized in that: described unloading valve adopts and runs through control formula unloading valve.
The beneficial effect that the present invention reaches: the relief circuit valve of present system pressure stability, when the electromagnet of three position four-way electromagnetic valve obtains electric, oil hydraulic pump and accumulator are simultaneously to oil hydraulic cylinder left chamber fuel feeding, the piston promoting oil hydraulic cylinder moves to right, and after contact workpiece, system pressure raises, when system pressure is elevated to the setting of unloading valve, unloading valve is opened, and oil hydraulic pump is by unloading valve off-load, and system pressure accumulator keeps.If when energy storage pressure is reduced to the minimum value of permission, unloading valve close, oil hydraulic pump again to accumulator and oil hydraulic cylinder fuel feeding, to ensure that the pressure in the left chamber of oil hydraulic cylinder is in allowed limits.The present invention, can keeping system stable while off-load, and safe and reliable property coefficient is higher, and the present invention is simultaneously connected with relief valve by pipeline oil hydraulic pump is other, and relief valve can play overflow protective action.
Accompanying drawing explanation
Fig. 1 is the relief circuit valve arrangement schematic diagram of present system pressure stability.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.Following examples only for technological scheme of the present invention is clearly described, and can not limit the scope of the invention with this.
As shown in Figure 1, the relief circuit valve that a kind of system pressure is stable, comprise oil hydraulic pump 5, three position four-way electromagnetic valve 3, unloading valve 1, relief valve 2, accumulator 4 and oil hydraulic cylinder 6, described accumulator 4 is connected with three position four-way electromagnetic valve 3 by pipeline with oil hydraulic pump, and described three position four-way electromagnetic valve 3 is connected with oil hydraulic cylinder 6 both sides by two pipelines, and described oil hydraulic pump 5 is connected with unloading valve 1 by pipeline.Described oil hydraulic pump 5 adopts unidirectional quantitative hydraulic pump.At the other relief valve 2 being connected with protective action together by pipeline of oil hydraulic pump 5.Described pipeline adopts flexible pipe.Described relief valve 2 adopts pilot operated compound relief valve.Described unloading valve 1 adopts and runs through control formula unloading valve.
In sum, the relief circuit valve of present system pressure stability, when the electromagnet of three position four-way electromagnetic valve 3 obtains electric, oil hydraulic pump 4 and accumulator 5 are simultaneously to oil hydraulic cylinder left chamber fuel feeding, and the piston promoting oil hydraulic cylinder 6 moves to right, after contact workpiece, system pressure raises, and when system pressure is elevated to the setting of unloading valve 1, unloading valve 1 is opened, oil hydraulic pump 5 is by unloading valve 1 off-load, and system pressure accumulator 4 keeps.If when accumulator 4 pressure is reduced to the minimum value of permission, unloading valve 1 cuts out, oil hydraulic pump 5 again to accumulator 4 and oil hydraulic cylinder 6 fuel feeding, to ensure that the pressure in the left chamber of oil hydraulic cylinder 6 is in allowed limits.The present invention, can keeping system stable while off-load, and safe and reliable property coefficient is higher, and the present invention is simultaneously connected with relief valve 2 by pipeline oil hydraulic pump 5 is other, and relief valve 2 can play overflow protective action.
More than show and describe basic principle of the present invention, major character and advantage.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (6)
1. the relief circuit valve that a system pressure is stable, comprise oil hydraulic pump, it is characterized in that: also comprise three position four-way electromagnetic valve, unloading valve, accumulator and oil hydraulic cylinder, described accumulator is connected with three position four-way electromagnetic valve by pipeline with oil hydraulic pump, and described three position four-way electromagnetic valve is connected with oil hydraulic cylinder both sides by two pipelines, and described oil hydraulic pump is connected with unloading valve by pipeline.
2. the relief circuit valve that a kind of system pressure according to claim 1 is stable, is characterized in that: described oil hydraulic pump adopts unidirectional quantitative hydraulic pump.
3. the relief circuit valve that a kind of system pressure according to claim 2 is stable, is characterized in that: at the other relief valve being connected with protective action together by pipeline of oil hydraulic pump.
4. the relief circuit valve that a kind of system pressure according to claim 3 is stable, is characterized in that: described pipeline adopts flexible pipe.
5. the relief circuit valve that a kind of system pressure according to claim 4 is stable, is characterized in that: described relief valve adopts pilot operated compound relief valve.
6. the relief circuit valve that a kind of system pressure according to claim 5 is stable, is characterized in that: described unloading valve adopts and runs through control formula unloading valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510131652.3A CN104763690A (en) | 2015-03-25 | 2015-03-25 | Unloading loop valve under stable system pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510131652.3A CN104763690A (en) | 2015-03-25 | 2015-03-25 | Unloading loop valve under stable system pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104763690A true CN104763690A (en) | 2015-07-08 |
Family
ID=53645711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510131652.3A Pending CN104763690A (en) | 2015-03-25 | 2015-03-25 | Unloading loop valve under stable system pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104763690A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113565805A (en) * | 2021-07-28 | 2021-10-29 | 珠海格力智能装备有限公司 | Adjusting device and cargo carrying mechanism |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58193914A (en) * | 1982-04-09 | 1983-11-11 | Hitachi Constr Mach Co Ltd | Trouble preindicating device for hydraulic system |
| CN202690347U (en) * | 2012-05-30 | 2013-01-23 | 三一重工股份有限公司 | Concrete pump swinging cylinder hydraulic system and concrete pumping device |
| CN103470544A (en) * | 2013-09-16 | 2013-12-25 | 愚公机械股份有限公司 | Energy-saving hoisting system of hydraulic crane |
| CN103836011A (en) * | 2012-11-23 | 2014-06-04 | 武汉华液传动制造有限公司 | Rapid pressurization system of hydraulic energy accumulator |
| CN103846403A (en) * | 2012-11-30 | 2014-06-11 | 无锡市协新气动有限公司 | Pressure-reducing and pressure-maintaining loop hydraulic system of tube drawing clamp |
| CN104421225A (en) * | 2013-08-21 | 2015-03-18 | 哈尔滨智晟天诚科技开发有限公司 | Marine steering gear hydraulic loading test apparatus |
| CN204646813U (en) * | 2015-03-25 | 2015-09-16 | 苏州福润机械有限公司 | The relief circuit valve that a kind of system pressure is stable |
-
2015
- 2015-03-25 CN CN201510131652.3A patent/CN104763690A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58193914A (en) * | 1982-04-09 | 1983-11-11 | Hitachi Constr Mach Co Ltd | Trouble preindicating device for hydraulic system |
| CN202690347U (en) * | 2012-05-30 | 2013-01-23 | 三一重工股份有限公司 | Concrete pump swinging cylinder hydraulic system and concrete pumping device |
| CN103836011A (en) * | 2012-11-23 | 2014-06-04 | 武汉华液传动制造有限公司 | Rapid pressurization system of hydraulic energy accumulator |
| CN103846403A (en) * | 2012-11-30 | 2014-06-11 | 无锡市协新气动有限公司 | Pressure-reducing and pressure-maintaining loop hydraulic system of tube drawing clamp |
| CN104421225A (en) * | 2013-08-21 | 2015-03-18 | 哈尔滨智晟天诚科技开发有限公司 | Marine steering gear hydraulic loading test apparatus |
| CN103470544A (en) * | 2013-09-16 | 2013-12-25 | 愚公机械股份有限公司 | Energy-saving hoisting system of hydraulic crane |
| CN204646813U (en) * | 2015-03-25 | 2015-09-16 | 苏州福润机械有限公司 | The relief circuit valve that a kind of system pressure is stable |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113565805A (en) * | 2021-07-28 | 2021-10-29 | 珠海格力智能装备有限公司 | Adjusting device and cargo carrying mechanism |
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150708 |