Partially closed electronically controlled permanent magnet device based on permanent magnet magnetic line

Abstract

The invention discloses a partially closed electronically controlled permanent magnet device based on a permanent magnet magnetic line. The device comprises a casing body and a conductive coil. The conductive coil is located in the casing body. The device further comprises a guiding cylinder which is fixed in the conductive coil. Mounting holes are axially arranged in the guiding cylinder. A magnetic conductive plate is attached to a permanent magnet. The permanent magnet and the magnetic conductive plate are fixed in the mounting holes and arranged along the axial direction of the mounting holes. An armature is located on one side, which is back to the permanent magnet, of the magnetic conductive plate and is slidably arranged along the axial direction of the mounting holes. The device further comprises an elastic member which comprises a mounting end and a sliding end in the elastic direction. The mounting end is fixed on the magnetic conductive plate. The sliding end is fixed on thearmature. The elastic member is in a compressed state when the armature is arranged on the magnetic conductive plate. According to the partially closed electronically controlled permanent magnet device based on the permanent magnet magnetic line, which is provided by the invention, the power supply duration of the coil is reduced; the energy consumption of an electromagnetic valve is reduced; theresponse speed of the separation between the armature and an electromagnet is increased; and the control precision of the electromagnet is improved.

Description

Technical field [0001] The invention relates to the technical field of solenoid valves, and in particular to an electrically controlled permanent magnet device based on the partial closure of the magnetic field lines of the permanent magnet. Background technique [0002] The solenoid valve is the core device of the hydraulic support electro-hydraulic control system, and the solenoid is the main driving component of the solenoid valve. [0003] In the prior art, the electromagnet located in the solenoid valve is located between the conductive coils. When the coil is energized, the electromagnet generates electromagnetism and attracts or repels the armature to realize the opening or closing of the solenoid valve. In the process of realizing the invention, the inventor found that: (1) The electromagnet needs to be continuously powered when it is open or closed, which not only increases the energy consumption of the solenoid valve, but also easily causes the coil in the electromagnet t...

AI Technical Summary

Problems solved by technology

The inventor found in the process of realizing the invention that: (1) the electromagnet needs continuous power supply when it is turned on or off, which not only increases the energy consumption of the solenoid valve, but also easily causes the coil located in the electromagnet to heat up, causing the coil The insulation and service life are reduced, and there is a risk of causing the coil to burn if it is serious; (2) When the electromagnet and the armature are from the adsorption state to the separation state, they are affected by the magnetism of the electromagnet. When the armature is separated from the permanent magnet, the response is slow, and the electromagnetic Iron control accuracy is low

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