Bistable electromagnetic valve with manual control function

Abstract

The invention discloses a bistable electromagnetic valve with a manual control function. An existing bistable electromagnetic valve maintains the electromagnetic valve in a state by using springs or by a mechanical mechanism, and the internal structure is complex. The bistable electromagnetic valve with the manual control function comprises a piston arranged in a cylinder, wherein a fluid inlet isformed in one side of the cylinder and a fluid outlet is formed in the other side of the cylinder; a guide hole is formed in an upper bottom of the piston; the lower bottom of the piston is sleeved with a sealing ring; a piston steel magnet is fixedly arranged at the bottom surface of the lower bottom of the piston; an iron core rod is horizontally arranged below the cylinder; a manual operatingrod is arranged on the iron core rod; two movable steel magnets serving as movable steel magnet pairs are horizontally arranged on the iron core rod in parallel, and the polarities of the two movablesteel magnets are opposite in the vertical direction; and electromagnetic coils are separately arranged at the two ends of the iron core rod and are coaxial with the iron core rod. The bistable electromagnetic valve with the manual control function is simple in structure, high in working stability and capable of maintaining in two states without maintenance current; and the bistable electromagnetic valve can be manually switched on and off under the emergency of power failure, and the electromagnetic valve is safe and reliable.

Description

technical field [0001] The invention belongs to the technical field of automatic control, and relates to a bistable solenoid valve with manual control function, which can maintain the state with zero energy consumption, and can manually control the switch of the valve in the case of power failure. Background technique [0002] Solenoid valve is a common control component, which is widely used in various fluid control fields to control the on-off of fluid. The common solenoid valve realizes the switching of the solenoid valve by switching the current in the solenoid coil, but once the coil is energized, the current needs to be continuously applied to maintain the state of the solenoid valve, which not only wastes energy, but also may cause the temperature of the solenoid valve to rise continuously. High, too high temperature shortens the working life of the solenoid valve and causes fire safety hazards. For this reason, reducing the energy consumption and temperature rise of...

AI Technical Summary

Problems solved by technology

The main principle is to use the elastic force of the spring to maintain the solenoid valve in one state, and then use the suction force greater than the spring force generated between the magnet and the iron core to maintain another state after electrification, or to achieve a bistable state through a mechanical mechanism, but this type of solenoid valve complex internal structure

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