Low-noise electromagnetic valve

Abstract

The invention provides a low-noise electromagnetic valve comprising an electromagnetic driving mechanism, a traction mechanism and a valve body, wherein the valve body comprises a cylindrical shell, a valve core and an upper cover, both ends of the cylindrical shell are provided with connecting flanges, the valve core is in the structural shape of a cylindrical surface generated in such a way that a pipeline with the diameter equal to that of the cylindrical shell is beveled by the other pipeline at an angle of 45 degrees, the cylindrical shell is provided with a hole in the same structural shape with the valve core, one end of the valve core is articulated on the edge of the hole, and the upper cover is fixed on the hole of the cylindrical shell; the traction mechanism comprises a pull rod and a pulling plate, wherein the pulling plate is articulated with the pull rod and the middle of the valve core; and the pull rod of the traction mechanism is connected with the electromagnetic driving mechanism. The invention has the outstanding disadvantages of fast opening and closing, small size, little fluid resistance, no regenerative noise and wide application prospect in a pipeline control system with higher noise reduction requirements.

Description

technical field [0001] The invention relates to a solenoid valve, in particular to a direct-acting solenoid valve. Background technique [0002] Solenoid valve is a device that uses electromagnetic force to overcome spring and self-gravity to drive the valve core to open and close. It is usually used to cut off the flow of oil, water, gas and other substances, and cooperates with electrical equipment such as pressure and temperature sensors to realize automatic control. With the further development of industrial modernization, the role of solenoid valves is also increasing. [0003] For most of the existing solenoid valves, the path through which the fluid passes is relatively complicated, which will increase the resistance of the fluid to pass through, and then generate turbulent noise, which will bring new noise to the pipeline that needs noise control source. At present, some designs, such as "a low-noise rotary control valve" proposed by Chris M. Leinen (see "LOW NOISE...

AI Technical Summary

Problems solved by technology

[0003] For most of the existing solenoid valves, the path through which the fluid passes is relatively complicated, which will increase the resistance of the fluid to pass through, and then generate turbulent noise, which will bring new noise to the pipeline that needs noise control source

At present, some designs, such as "a low-noise rotary control valve" proposed by Chris M. Leinen (see "LOW NOISE ROTARY CONTROLVALVE" in U.S. Patent No. 5,511,584 for details), although the effect of low noise can be achieved, but this valve The opening and closing need to rotate the valve core, the process is complex, slow and large in size, it is not suitable for electromagnetic control, and it is difficult to meet the needs of real-time control

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