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

Abstract

The invention discloses a plate-type four-position four-way cone valve direct-acting type electromagnetic reversing hydraulic valve, which comprises a valve body. The two sides of the valve body are provided with a first valve core assembly, a second valve core assembly, a third valve core assembly and a fourth valve core assembly with cone valve type structures, and other two sides of the valve body are respectively equipped with a first electromagnet and a second electromagnet; and the plate-type four-position four-way cone valve direct-acting type electromagnetic reversing hydraulic valve is different from the prior art, the two electromagnets of the plate-type four-position four-way cone valve direct-acting type electromagnetic reversing hydraulic valve can be powered on at the same time, and the one position function is added to meet special needs; the valve core assemblies are the cone valve type structures, and can realize nominal zero leakage of four oil ports, and at the sametime, the valve core assemblies are four sets of independent components; and through different oil way combinations, other valve types with no leakage function can be derived, and the external dimension is basically the same as an ordinary slide valve type.

Description

technical field [0001] The invention relates to the technical field of electromagnetic hydraulic reversing valves, in particular to a plate-type four-position, four-way cone valve direct-acting electromagnetic reversing hydraulic valve. Background technique [0002] The plate type solenoid reversing hydraulic valve that meets the DIN 24 340-A6 / DIN 24 340-A10 industrial standard connection mounting surface, that is, the commonly called 6-way and 10-way plate type solenoid valves, is widely used in hydraulic systems. According to the form of the spool, it is usually divided into spool valve type and cone valve type. The spool valve type has a certain amount of leakage because it is a gap seal. Leakage, the common implementation form of the cone valve type is the lever steel ball type or the direct spool valve sleeve with the cone surface fit, which can be two-position two-way type and two-position three-way type, and the slide valve type can be made in many combinations. 2-po...

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

Images