A plate-type four-position four-way cone valve direct-acting electromagnetic reversing hydraulic valve

Abstract

The invention discloses a plate-type four-position four-way cone valve direct-acting electromagnetic reversing hydraulic valve, which comprises a valve body, and a first valve core assembly and a second valve core assembly of a cone valve structure are arranged on both sides of the valve body , the third spool assembly and the fourth spool assembly, and the other two sides of the valve body are respectively equipped with a first electromagnet and a second electromagnet. , different from the existing technology, its two electromagnets can be energized at the same time, adding a function to meet special needs, and the valve core assembly is a cone valve structure, which can achieve nominal zero leakage of the four oil ports, and at the same time The spool assembly is four sets of independent parts. Through different combinations of oil circuits, other non-leakage valve types can be derived. At the same time, the external dimensions are basically the same as those of ordinary spool valves.

Description

A plate type four-position four-way poppet valve direct-acting electromagnetic reversing hydraulic valve technical field The present invention relates to electromagnetic hydraulic reversing valve technical field, be specifically a kind of plate type four-position four-way cone valve direct-acting electromagnetic Reversing hydraulic valve. Background technique [0002] Plate type electromagnetic reversing hydraulic pressure in accordance with DIN 24 340-A6 / DIN 24 340-A10 industrial standard connection mounting surface Valves, commonly known as 6- and 10-diameter plate solenoid valves, are widely used in hydraulic systems, according to the shape of the spool. Type, usually divided into slide valve type and poppet valve type, slide valve type is a gap seal, there is a certain amount of leakage, poppet valve type is a cone surface Seal or steel ball seal, which can be nominally leak-free, and the poppet valve type is usually realized in the form of lever steel ball type or...

AI Technical Summary

Problems solved by technology

[0003] However, due to the limitation of the spool spool structure, the spool and the push rod assembly of the electromagnet are always in contact together, so the spool can only move in one direction, that is, there can only be three working positions, namely the neutral position (electromagnet not be energized), left position (one electromagnet is energized), right position (the other electromagnet is energized), two electromagnets cannot be energized at the same time, the spool valve core and the valve body hole are gap seals, so there is always For a certain amount of leakage, in many working conditions that require pressure maintenance, it is necessary to separately superimpose pressure maintenance hydraulic valves, such as check valves, hydraulic locks, etc., which increases the cost of use and increases the hidden danger of leakage between the valve plates , there are also some manufacturers who directly integrate the pressure maintaining valve on the reversing valve body. Although the hidden danger of leakage between the valve plates is eliminated, the height of the valve body is increased, and the processing difficulty of the valve body is also increased. Therefore, we Propose a plate type four position four way cone valve direct acting electromagnetic reversing hydraulic valve

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