Three-stage pressure control pump
A pressure control, constant pressure variable pump technology, applied in the field of hydraulic pumps, can solve the problems of energy waste, leakage, noise, etc., and achieve the effect of avoiding environmental pollution
Inactive Publication Date: 2013-12-11
WISDRI ENG & RES INC LTD
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Problems solved by technology
When a pressure reducing valve is used, there is leakage; when an overflow valve is used, there is noise, both of which cause energy waste and pollute the environment
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[0007] Such as figure 1 As shown, the three-stage pressure control pump of the present invention includes a motor 1, a constant pressure variable pump assembly 2, a first hydraulic cylinder 6, and a second hydraulic cylinder 8. The motor 1 is connected to the constant pressure variable pump assembly 2 through a coupling. The inlet of the constant pressure variable pump assembly 2 is connected with the second electromagnetic reversing valve 5 and the third electromagnetic reversing valve 7 through connecting pipes or oil circuit blocks, and the second electromagnetic reversing valve 5 and the third electromagnetic reversing valve 7 are respectively The first hydraulic cylinder 6 and the second hydraulic cylinder 8 are connected; the outlet of the constant pressure variable pump assembly 2 is connected with the overflow valve group 4 and the first electromagnetic reversing valve 3 through a pipeline or an oil circuit block.
[0008] Wherein, in this embodiment, the motor 1 is ex...
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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 [0001] The invention relates to a hydraulic pump, in particular to a three-stage pressure control pump. Background technique [0002] At present, most of the hydraulic systems in front of the blast furnace output two pressures, namely, zero pressure unloading and working pressure. When there are two working pressures in the system actuator, generally a pressure reducing valve or overflow is set on the circuit with low pressure valve. When the pressure reducing valve is used, there is leakage; when the overflow valve is used, there is noise, both of which cause energy waste and pollute the environment. Contents of the invention [0003] In view of this, the technical problem to be solved by the present invention is to provide a three-stage pressure pump, which can realize multiple pressure conversions, and has the functions of environmental protection, energy saving and consumption reduction. [0004] In order to solve the above-mentioned technical problem...
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IPC IPC(8): F15B9/04
Inventor 胡雪萍陈义正牟丹程文芳危丹锋
Owner WISDRI ENG & RES INC LTD