Solenoid valve with valve core structure

Abstract

The invention discloses a solenoid valve with a valve core structure. The solenoid valve comprises a valve sleeve, a connector for the valve sleeve, a valve core, a pressure reduction valve core arranged in the valve sleeve and a throttle valve sleeve. The valve core is arranged in the throttle valve sleeve. The valve core comprises a valve rod body and a valve seat. An oil guiding blind hole is formed at the axis of the valve rod body. The end of the valve rod body with an oil guiding blind hole inlet is circumferentially provided with an oil guiding hole communicated with the oil guiding blind hole; and the circumference of the other end of the valve rod body, namely the bottom circumferential position of the oil guiding blind hole, is provide with an oil through hole communicated with the oil guiding blind hole. The structure is favorable for reducing the variation of the open area of the valve core in the movement process, the problem that the solenoid valve is subject to large transient hydraulic drive and hydraulic impact in motion due to the too large variation of the open area of an electromagnet valve core structure can be effectively solved, the response speed and control precision of the solenoid valve are improved, the noise is reduced, the production quality of industrial products is improved, and the service life of an engineering device is prolonged.

Description

technical field [0001] The invention relates to a valve, in particular to a solenoid valve with a valve core structure. Background technique [0002] The hydraulic source, control components and actuators are the most basic components of the hydraulic system. The actuators in the hydraulic system (such as hydraulic cylinders, hydraulic oil motors) need to start, brake, change direction and adjust the movement speed frequently when they are working. And adapt to the change of external load, so there must be a set of hydraulic components to control and adjust the mechanism, usually controlled by hydraulic valves, it does not work externally, it is only used to control the actuator to meet the performance requirements of the main engine. Solenoid valve is one of the many classification methods of hydraulic valves. As a bridge connecting microelectronics technology, computer technology and large-scale industrial technology, its performance will directly affect the performance of...

AI Technical Summary

Problems solved by technology

During the movement of the spool relative to the valve sleeve, the flow area of ​​the round hole changes a lot. Compared with the round hole, the situation of the special-shaped round hole is somewhat improved, but it also cannot meet the requirements of modern technology and cannot solve the problem when the solenoid valve moves. Transient hydraulic power problems, resulting in large hydraulic shocks, affect the control accuracy and responsiveness of solenoid valves, resulting in slow response and low precision of engineering equipment, and even a lot of noise, reducing the production quality of industrial products and the reliability of engineering equipment life

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