CN103438036A - Three-stage pressure control pump - Google Patents
Three-stage pressure control pump Download PDFInfo
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- CN103438036A CN103438036A CN2013103305505A CN201310330550A CN103438036A CN 103438036 A CN103438036 A CN 103438036A CN 2013103305505 A CN2013103305505 A CN 2013103305505A CN 201310330550 A CN201310330550 A CN 201310330550A CN 103438036 A CN103438036 A CN 103438036A
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- pressure
- hydraulic cylinder
- pump assembly
- solenoid directional
- control valve
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Abstract
The invention discloses a three-stage pressure control pump, which comprises a motor, a constant-pressure variable pump assembly, a first hydraulic cylinder and a second hydraulic cylinder. The motor is connected with the constant-pressure variable pump assembly through a coupling. The inlet of the constant-pressure variable pump assembly is connected with a second electromagnetic reversing valve and a third electromagnetic reversing valve through connecting pipes or oil route blocks. The second electromagnetic reversing valve and the third electromagnetic reversing valve are respectively connected with the first hydraulic cylinder and the second hydraulic cylinder. The outlet of the constant-pressure variable pump assembly is connected with an overflow valve group and a first electromagnetic reversing valve through pipes or oil route blocks. In the three-stage pressure control pump, when a non-executing mechanism in a system acts, the hydraulic pump outputs zero pressure; when an executing mechanism for lower working pressure in the system acts, the hydraulic pump outputs lower pressure; and when an executing mechanism for higher working pressure acts, the hydraulic pump outputs higher pressure. Therefore, the environmental pollution is avoided, the energy is saved and the consumption is reduced.
Description
Technical field
The present invention relates to a kind of oil hydraulic pump, particularly relate to a kind of three stage pressure control pumps.
Background technique
The front hydraulic system of blast furnace of most, export two kinds of pressure, i.e. zero-pressure off-load and working pressure, when two kinds of working pressures are arranged in system actuator, arrange reduction valve or relief valve on the general loop low at pressure.When using reduction valve, leakage is arranged; While using relief valve, noisiness is arranged, both all cause energy waste, befouling environment.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is to provide a kind of three stage pressure pumps, can realize multiple pressure conversion, plays environmental protection and energy-saving and cost-reducing function.
For solving the problems of the technologies described above, technological scheme of the present invention is achieved in that a kind of three stage pressure control pumps, comprise motor, constant pressure variable displacement pump assembly, the first oil hydraulic cylinder and the second oil hydraulic cylinder, described motor is connected with the constant pressure variable displacement pump assembly by coupling, the entrance of described constant pressure variable displacement pump assembly is connected with the second solenoid directional control valve, the 3rd solenoid directional control valve by connecting tube or manifold block, and the second solenoid directional control valve, the 3rd solenoid directional control valve also are connected with respectively the first oil hydraulic cylinder and the second oil hydraulic cylinder; The outlet of described constant pressure variable displacement pump assembly is connected with the first solenoid directional control valve with the relief valve group by pipeline or manifold block.
The technique effect that the present invention reaches is as follows: the present invention's three stage pressure control pumps, mainly to connect the relief valve group at the variable delivery side of pump to make telecontrol, when in system, pressure reaches the setting pressure on the relief valve group, oil hydraulic pump is switched to the control mode of constant pressure variable displacement pump.Like this, if connect two relief valves in outlet connect the relief valve group, and by the commutation of solenoid directional control valve, realize that two relief valves control respectively oil hydraulic pump.When system is moved without actuator, oil hydraulic pump is exported with zero-pressure; When the actuator that working pressure is lower in system moves, oil hydraulic pump output lower pressure; When the actuator that working pressure is higher in system moves, oil hydraulic pump output elevated pressures.Avoid like this befouling environment, energy-saving and cost-reducing.
The accompanying drawing explanation
The structural representation that Fig. 1 is the present invention's three stage pressure control pumps.
Embodiment
As shown in Figure 1, for the present invention's three stage pressure control pumps, comprise motor 1, constant pressure variable displacement pump assembly 2, the first oil hydraulic cylinder 6 and the second oil hydraulic cylinder 8, motor 1 is connected with constant pressure variable displacement pump assembly 2 by coupling, the entrance of constant pressure variable displacement pump assembly 2 is connected with the second solenoid directional control valve 5, the 3rd solenoid directional control valve 7 by connecting tube or manifold block, and the second solenoid directional control valve 5, the 3rd solenoid directional control valve 7 also are connected with respectively the first oil hydraulic cylinder 6 and the second oil hydraulic cylinder 8; The outlet of constant pressure variable displacement pump assembly 2 is connected with the first solenoid directional control valve 3 with relief valve group 4 by pipeline or manifold block.
Wherein, in the present embodiment, motor 1 is existing equipment, for example can adopt the motor that model is Y180L-4.Constant pressure variable displacement pump assembly 2 is existing equipment, adopts the oil hydraulic pump that model is A4VSO40DRG/10R-PPB13N00.The first solenoid directional control valve 3 can adopt existing equipment, for example can adopt the solenoid directional control valve that model is 4WE6H6X/EG24N9K4.Relief valve group 4 can be bought on market, for example can adopt the relief valve that model is Z2DB6VC2-4X/315.The second solenoid directional control valve 5 is existing equipment, for example can adopt the solenoid directional control valve that model is 4WE6J-61/CW220-50N9Z5L.The first oil hydraulic cylinder 6 adopts existing equipment, for example can adopt the single-action hydraulic cylinder that model is φ 80/ φ 56 * 500.The 3rd solenoid directional control valve 7, be existing equipment, for example can adopt the solenoid directional control valve that model is 4WE6J-61/CW220-50N9Z5L.The second oil hydraulic cylinder 8 adopts existing equipment, for example can adopt the double-acting hydraulic cylinder that model is ￠ 80/ ￠ 56x500.
Three stage pressure control pumps provided by the invention, its working procedure is: in system, in the first solenoid directional control valve 3, aDT, bDT all must not whens electricity, and constant pressure variable displacement pump assembly 2 is with zero-pressure output, and the system consumption energy is 0; When in system, the first oil hydraulic cylinder 6 will move, its working pressure is X1MPa, and in the first solenoid directional control valve 3, aDT obtains electricly, and the maximum delivery pressure of constant pressure variable displacement pump assembly 2 is X1MPa, and the 1DT of the second solenoid directional control valve 5,2DT obtain electric, and the first oil hydraulic cylinder 6 can move; When in system, the second oil hydraulic cylinder 8 will move, its working pressure is X2MPa, in the first solenoid directional control valve 3 bDT obtain electric, the pressure maximum of constant pressure variable displacement pump assembly 2 for output X2MPa, the 3DT of the 3rd solenoid directional control valve 7,4DT obtain electric, and the second oil hydraulic cylinder 8 can move.Above-mentionedly do not consider drag losses.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.
Claims (1)
1. a stage pressure control pump, comprise motor, constant pressure variable displacement pump assembly, the first oil hydraulic cylinder and the second oil hydraulic cylinder, it is characterized in that, described motor is connected with the constant pressure variable displacement pump assembly by coupling, the entrance of described constant pressure variable displacement pump assembly is connected with the second solenoid directional control valve, the 3rd solenoid directional control valve by connecting tube or manifold block, and the second solenoid directional control valve, the 3rd solenoid directional control valve are connected with respectively the first oil hydraulic cylinder and the second oil hydraulic cylinder; The outlet of described constant pressure variable displacement pump assembly is connected with the first solenoid directional control valve with the relief valve group by pipeline or manifold block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103305505A CN103438036A (en) | 2013-08-01 | 2013-08-01 | Three-stage pressure control pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103305505A CN103438036A (en) | 2013-08-01 | 2013-08-01 | Three-stage pressure control pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103438036A true CN103438036A (en) | 2013-12-11 |
Family
ID=49691739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103305505A Pending CN103438036A (en) | 2013-08-01 | 2013-08-01 | Three-stage pressure control pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103438036A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107313995A (en) * | 2016-01-28 | 2017-11-03 | 邓贲 | A kind of force control hydraulic pressure energy saving of system method and its energy saver |
| CN111395959A (en) * | 2020-03-30 | 2020-07-10 | 西安石油大学 | Dynamic directional rotary steering drilling tool test bed power system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6227510A (en) * | 1985-07-30 | 1987-02-05 | Kawasaki Steel Corp | Method for controlling opening speed of large bell at blast furnace top |
| CN101315087A (en) * | 2008-06-05 | 2008-12-03 | 中冶华天工程技术有限公司 | Hydraulic system of blast furnace gun |
| CN201201948Y (en) * | 2008-06-12 | 2009-03-04 | 宁波钢铁有限公司 | Parallel type blast furnace front mud gun hydraulic system |
| CN201201949Y (en) * | 2008-06-12 | 2009-03-04 | 宁波钢铁有限公司 | Blast furnace front clay gun hydraulic system without balance valve |
| CN203430877U (en) * | 2013-08-01 | 2014-02-12 | 中冶南方工程技术有限公司 | Three-level pressure control pump |
-
2013
- 2013-08-01 CN CN2013103305505A patent/CN103438036A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6227510A (en) * | 1985-07-30 | 1987-02-05 | Kawasaki Steel Corp | Method for controlling opening speed of large bell at blast furnace top |
| CN101315087A (en) * | 2008-06-05 | 2008-12-03 | 中冶华天工程技术有限公司 | Hydraulic system of blast furnace gun |
| CN201201948Y (en) * | 2008-06-12 | 2009-03-04 | 宁波钢铁有限公司 | Parallel type blast furnace front mud gun hydraulic system |
| CN201201949Y (en) * | 2008-06-12 | 2009-03-04 | 宁波钢铁有限公司 | Blast furnace front clay gun hydraulic system without balance valve |
| CN203430877U (en) * | 2013-08-01 | 2014-02-12 | 中冶南方工程技术有限公司 | Three-level pressure control pump |
Non-Patent Citations (1)
| Title |
|---|
| 王更生，覃小阳: "高炉炉前液压***的改进", 《液压气动与密封》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107313995A (en) * | 2016-01-28 | 2017-11-03 | 邓贲 | A kind of force control hydraulic pressure energy saving of system method and its energy saver |
| CN107327426A (en) * | 2016-01-28 | 2017-11-07 | 邓贲 | A kind of force control hydraulic pressure energy saving of system method and its energy saver |
| CN107313995B (en) * | 2016-01-28 | 2018-10-19 | 广东天恒液压机械有限公司 | A kind of force control hydraulic pressure energy saving of system method and its energy saver |
| CN107327426B (en) * | 2016-01-28 | 2018-10-19 | 佛山市佛锐达机电科技有限公司 | A kind of force control hydraulic pressure energy saving of system method and its energy saver |
| CN111395959A (en) * | 2020-03-30 | 2020-07-10 | 西安石油大学 | Dynamic directional rotary steering drilling tool test bed power system |
| CN111395959B (en) * | 2020-03-30 | 2021-09-07 | 西安石油大学 | Dynamic directional rotary steering drilling tool test bed power system |
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Application publication date: 20131211 |