Straight normally open solenoid valve

Abstract

The invention discloses a straight normally open solenoid valve. The straight normally open solenoid valve comprises a valve body with a straight cavity, an electromagnetic coil arranged along the outer circumference of the valve body, and an excitation magnet arranged in the straight cavity in the middle of the valve body; a valve element is movably arranged in the straight cavity at the proximalend of the valve body; a fluid passage is formed between the valve element and the inner wall of the straight cavity; a rubber plug matched with the excitation magnet is embedded in the distal end ofthe valve element; the outer circumference of the valve core is sleeved with a spring; the proximal end of the spring is propped against the protruding section of the proximal end of the valve element; the distal end is propped against the proximal end surface of the excitation magnet; and when being energized, the excitation magnet generates a magnetic attraction force under the action of the electromagnetic coil, and the valve element overcomes the reverse elastic force of the spring under the action of magnetic attraction force to move toward the excitation magnet, and a magnet flow channel is closed by the rubber plug. The straight normally open solenoid valve has novel and simple structural design and low manufacturing cost, realizes the functions of power-on and power-off, has goodsealing performance, and is stable and reliable to use.

Description

technical field [0001] The invention relates to the technical field of solenoid valves, in particular to a direct normally open solenoid valve. Background technique [0002] As a kind of electromagnetically controlled industrial equipment, solenoid valve is an automatic actuator for controlling fluid, with wide application fields and diversified functions. Traditionally, the solenoid valve control mostly adopts the normally closed type, that is, the valve opens when the power is turned on, and the valve closes when the power is turned off, and the electromagnetic coil is arranged in the vertical direction of the channel in structure. Such a structure leads to a larger size of the solenoid valve. In addition, in some logic application places, the solenoid valve is often required to realize the functions of power-on disconnection and power-off opening. Therefore, it is necessary to provide a normally open solenoid valve with the functions of power-on disconnection and power-o...

AI Technical Summary

Problems solved by technology

Such a structure leads to larger dimensions of the solenoid valve. In addition, in some logic application places, the solenoid valve is often required to realize the function of power-on disconnection and power-off opening.

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