Impulse magnetic valve for removing dust and clearing ash

Abstract

The invention discloses a pulse electromagnetic valve for dedusting and deashing, comprising a valve body; wherein, a blowing trough is arranged on a wall of the valve body; a piston group used for controlling the make-and-break of the blowing trough is arranged in a lower cavity inside the wall of the valve body; the wall of the valve body also comprises an upper cavity; a partition wall is arranged between the upper cavity and the lower cavity, and the partition wall is opened with a through hole which is communicated with the upper cavity and the lower cavity; the upper cavity is communicated with an atmospheric passage; a solenoid electric valve for controlling the make-and-break of the upper cavity and the atmospheric passage is arranged on the upper cavity. The invention has the advantages of simple structure, convenient installation and noleakage, thereby greatly reducing the manufacturing cost of a dedusting gas pocket, improving the dependability and achieving world leading level.

Description

technical field [0001] The invention belongs to a control valve, in particular to a pulse electromagnetic valve used for cleaning dust on a bag filter. Background technique [0002] The current pulse solenoid valves used for dust removal and dust removal, especially the pulse solenoid valves used for dust removal on the bag filter, are mostly diaphragm structures. Due to the long path of the pilot hole and small aperture, it is easy to block the pulse solenoid valve. Failure, coupled with the limited life of the diaphragm, makes the service life of the pulse solenoid valve too short. The foreign advanced piston pilot valve has a long service life, but its first-level pilot part always has a diaphragm structure, so it also has the defect of easy clogging and failure. The cost is high, and it is difficult to guarantee its processing quality. Due to processing quality problems, for example, when the parallelism error between the end surface of the blowing pipe and the bottom s...

AI Technical Summary

Problems solved by technology

[0002] The current pulse solenoid valves used for dust removal and dust removal, especially the pulse solenoid valves used for dust removal on the bag filter, are mostly diaphragm structures. Due to the long path of the pilot hole and small aperture, it is easy to block the pulse solenoid valve. Failure, coupled with the limited life of the diaphragm, makes the service life of the pulse solenoid valve too short

The foreign advanced piston pilot valve has a long service life, but its first-level pilot part always has a diaphragm structure, so it also has the defect of easy clogging and failure. The cost is high, and it is difficult to guarantee its processing quality. Due to processing quality problems, for example, when the parallelism error between the end surface of the blowing pipe and the bottom surface of the pulse solenoid valve piston is 0.5mm (this error is difficult to guarantee for steel structure weldments), resulting in The gas loss is more than twice the effective gas consumption, resulting in excessive energy loss

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