A flow distribution valve for double pump system
A flow distribution and pump system technology, applied in the field of hydraulic valves, can solve the problems of difficult assembly and maintenance, increased manufacturing costs, and high system manufacturing costs
Active Publication Date: 2019-07-12
NINGBO RIAN PRECISION MASCH CO LTD
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- Claims
- Application Information
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Problems solved by technology
If the load sensing variable pump system is used, the flow range provided is wide and the energy saving effect is good, but the manufacturing cost of the system is high, the assembly and maintenance are difficult, and it is not easy to guarantee
Using a fixed pump system, its rated flow rate is much greater than the flow requirements of some actuators or additional working devices, and the system does not match; if a special pump source needs to be added, the manufacturing cost will increase, and the system will become more complicated.
Method used
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[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0020] Such as Figure 1~6 Shown is a preferred embodiment of the present invention.
[0021] A flow distribution valve for a dual pump system comprising
[0022] Valve block 1, valve block 1 is provided with a first oil inlet P1, a second oil inlet P2, a first oil outlet B1, a second oil outlet B2, a main oil outlet A and an oil return port T;
[0023] The first passage 11, the first passage 11 has a first main valve port 1c for communicating with the first oil inlet P1 and the main oil outlet A, and for communicating with the first oil inlet P1 and the first oil outlet B1 The first valve port 1d;
[0024] The first priority compensation spool 3a is located in the first passage 11 and can slide. The first priority compensation spool 3a is provided with a first main shoulder 3a1 for blocking the first main valve port 1c, and for sealing Bl...
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The invention relates to a flow distributing valve for a dual-pump system. The flow distributing valve is characterized in that the flow distributing valve comprises a valve block, a first channel, asecond channel, a two-position two-way solenoid valve, an overflow valve assembly and a flow adjusting valve assembly, wherein the valve block is provided with a first oil inlet, a second oil inlet, afirst oil outlet, a second oil outlet, a main oil outlet and an oil return opening; the first channel and the second channel are internally provided with priority compensating valve cores correspondingly; the two-position two-way solenoid valve is used for switching a connecting channel to communicate with the oil return opening or the main oil outlet; the overflow valve assembly is opened afterpressure in both a first main control cavity and a second main control cavity reaches a certain value, and the first main control cavity and the second main control cavity simultaneously communicate with the oil return opening; and the flow adjusting valve assembly is arranged on the valve block and used for controlling the output flow of the main oil outlet. The flow distributing valve for the dual-pump system is simple and reasonable in structure and convenient to machine, and a dual-pump hydraulic system structure can be simplified; and the dual-pump hydraulic system after the distributingvalve is adopted can effectively reduce the cost, and thus the cost of the whole machine is effectively reduced.
Description
technical field [0001] The invention belongs to the technical field of hydraulic valves, in particular to a flow distribution valve used in a double-pump system. Background technique [0002] In the hydraulic system of modern industrial machinery and mobile machinery, there are generally multiple actuators or an increasing number of additional working devices to meet the needs of one machine with multiple functions according to the actual situation, and these multiple actuators or different additional work The hydraulic flow required by the device is different. For example, the rated flow required by some actuators in the same hydraulic system is only 1 / 3-1 / 2 of the total flow of the hydraulic system, while the rated flow required by some actuators is the system. total traffic. If the load sensing variable pump system is used, the flow range provided is wide and the energy saving effect is good, but the manufacturing cost of the system is high, the assembly and maintenance ...
Claims
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IPC IPC(8): F15B13/02F15B20/00F16K11/10
CPCF15B13/02F15B13/026F15B20/007F16K11/10
Inventor 陈艳艳
Owner NINGBO RIAN PRECISION MASCH CO LTD