Multi-stage pressure feedback hydraulic diverter valve
A diverter valve and multiple feedback technology, applied in the field of hydraulic diverter valve, can solve the problems of excessive oil replenishment in the load circuit, reduce the efficiency of the hydraulic system, increase energy consumption, etc., and achieve the effects of sufficient fuel combustion, reduced power consumption, and reduced content
Active Publication Date: 2021-05-25
HARBIN INST OF TECH
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Problems solved by technology
If a traditional diverter valve is used to select a higher pressure energy level as the standard for oil replenishment and oil separation, it is easy to overfill the load circuit under some working conditions, causing unnecessary overflow loss, increasing energy consumption, and reducing hydraulic system pressure. s efficiency
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[0012] In order to better understand the purpose, structure and function of the present invention, below in conjunction with appendix Figure 1~4 , the present invention is described in further detail.
[0013] A hydraulic diverter valve with multi-stage pressure feedback, including a pilot valve 20, a main valve 21 and a one-way valve 22; the pilot valve 20 is installed on the main valve 21, and the pilot valve spool 3 of the pilot valve 20 is provided with multiple Feedback structure, the one-way valve 22 and the main valve 21 share a valve body, the valve body is provided with an A port 23 connected to the oil pump A and a D port 26 connected to the load circuit 2 at the main valve 21, and the valve body is in the single The pilot valve 22 is provided with a B port 24 connected to the oil pump B and a C port 25 connected to the load circuit 1. The pilot valve 20 is provided with an F port 27 connected to the oil tank, and the feedback chamber 32 of the pilot valve 20 is a m...
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The invention discloses a multi-stage pressure feedback hydraulic diverter valve, and belongs to the field of energy conservation of vehicle hydraulic systems. The multi-stage pressure feedback hydraulic diverter valve comprises a pilot valve, a main valve and a one-way valve; a pilot valve element of the pilot valve is provided with a multi-feedback structure, the one-way valve and the main valve share one valve body, the valve body is provided with a port A connected with an oil pump A and a port D connected with a second load loop at the position of the main valve, the valve body is provided with a port B connected with an oil pump B and a port C connected with a first load loop at the position of the one-way valve, and the pilot valve is provided with a port F connected with an oil tank; and a feedback cavity of the pilot valve is a multi-feedback cavity, and the multi-feedback cavity is connected with the first load loop through a plurality of feedback oil ways. When the multi-stage pressure feedback hydraulic diverter valve is applied to a vehicle hydraulic system, the system pressure can be adjusted according to working requirements, the matching degree of system oil supply and load requirements is improved, and therefore the system efficiency is improved; and feedback oil of the load loop is introduced into different feedback cavities of the pilot valve, the effective area of each feedback cavity is reasonably combined, the load requirement can be accurately matched, and the power consumption of the vehicle hydraulic system is reduced.
Description
technical field [0001] The invention belongs to the field of energy saving of vehicle hydraulic systems, in particular to a hydraulic diverter valve. Background technique [0002] Heavy vehicles such as armored vehicles and construction machinery are faced with complex working conditions in the working process, and different working conditions have different requirements on the pressure and flow rate of the circuit oil. When designing a traditional hydraulic system, the working capacity, reliability and cost of the system are mainly considered, and the efficiency of the system is not paid attention to. The root cause of the low efficiency of the hydraulic system is the load mismatch, that is, the output pressure and output flow of the system do not match the pressure and flow required by the actuator. When the output flow is greater than the flow required by the load, overflow loss occurs; when the output pressure is greater than the pressure required by the load, pressure ...
Claims
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IPC IPC(8): F15B13/042F16K31/36F16K15/18
CPCF15B13/042F16K15/18F16K31/36
Inventor 杨庆俊毛奇罗宁波杨尚儒曹旺罗小梅吕庆军姜宏暄
Owner HARBIN INST OF TECH