Modularized load-sensitive electric-hydraulic proportional multiway valve

Abstract

The invention relates to a modularized load-sensitive electric-hydraulic proportional multiway valve which comprises a load-sensitive pressure module, a proportional control valve guide oil source module, a logic control module, a proportional reversing module, a proportional guide control module, a plurality of main circuit function control modules and a connecting and transferring module, wherein the load-sensitive pressure module is used for controlling an oil source of the whole modularized load-sensitive electric-hydraulic proportional multiway valve, and comprises an overflow valve, a #1 throttle valve, a #2 stop valve and a first guide type overflow valve; the proportional control valve guide oil source module is connected with the external guide control oil source, and is used for providing the guide oil source for the modularized load-sensitive electric-hydraulic proportional multiway valve; the logic control module comprises a plurality of logic control valves; the proportional guide control module comprises a hydraulic control guide proportional valve or an electromagnetic proportional reversing valve, corresponding to the logic control module in quantity. The modularized load-sensitive electric-hydraulic proportional multiway valve has the benefits that the modularized load-sensitive electric-hydraulic proportional multiway valve which is convenient to mount and maintain, simple in structure, integrated, capable of being assembled, open and energy-saving is provided.

Description

technical field [0001] The invention relates to a multi-way control valve, in particular to a modular load sensitive electro-hydraulic proportional multi-way valve. Background technique [0002] At present, the general functions of traditional proportional multi-way control valves are standard. Like a group of valves, the flow rate is generally within a certain range. Once the control form is determined, it is difficult to change. The functions of the type circuit valves generally cannot be converted, and functional valves such as hydraulic locks cannot be added to the main circuit, and the combined flow function of different valves cannot be realized in the valve; in addition, the load proportional function and the ordinary switch energy supply valve cannot be connected in series. Contents of the invention [0003] In view of the above-mentioned problems in the prior art, the main purpose of the present invention is to solve the defects of the prior art. The present inven...

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Problems solved by technology

[0002] At present, the general functions of traditional proportional multi-way control valves are standard. Like a group of valves, the flow rate is generally within a certain range. Once the control form is determined, it is difficult to change. Generally, the function of the type circuit valve cannot be converted, and the main circuit cannot be equipped with functional valves such as hydraulic locks, and the combined flow function of different valves cannot be realized in the valve; in addition, the load proportional function and the ordinary switch energy supply valve cannot be connected in series.

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