Proportional electromagnetic valve used for treating tail gas through solid ammonia

Abstract

The invention discloses a proportional electromagnetic valve used for treating tail gas through solid ammonia. The proportional electromagnetic valve comprises a valve body. The valve body is provided with a fluid inlet and a fluid outlet which communicate with each other through a fluid channel. An electromagnet assembly is assembled at the upper portion of the valve body and comprises a shell, a coil support, a coil wound around the coil support, a sleeve assembled in the center of the coil support, a movable iron core capable of vertically moving in the sleeve, and a fixed iron core fixed to the upper end of the sleeve. The lower end of the movable iron core is matched with the fluid channel. At least one abrasion resisting ring is embedded in the periphery of the movable iron core. A manual rod capable of manually adjusting the vertical installing position is arranged in the center of the fixed iron core. A spring is arranged between the lower end of the manual rod and the upper end of the movable iron core, and a magnetism isolation ring is arranged between the fixed iron core and the movable iron core. The proportional electromagnetic valve has the beneficial effects that the structure is simple, the service life is long, and the open point of the electromagnetic valve can be adjusted.

Description

technical field [0001] The invention relates to the technical field of electromagnetic valve manufacturing, in particular to a proportional electromagnetic valve used for treating tail gas with solid ammonia. Background technique [0002] A general solenoid valve consists of an excitation coil, a fixed iron core, a compression spring, a movable iron core, and a valve body. Its working principle is that when the excitation coil is not energized, the sealing head of the fixed iron core will close the valve under the action of the compression spring and the back pressure of the valve air inlet medium. When the excitation coil is energized, the electromagnetic force overcomes the reaction force of the compression spring and the back pressure of the valve air inlet medium, so that the movable iron core moves to the fixed iron core until the two planes are attracted, and the valve is in the open state. [0003] Proportional solenoid valve is a kind of solenoid valve. Its working ...

AI Technical Summary

Problems solved by technology

Due to the frequent opening and closing of solenoid valves, it often causes severe wear of moving parts, resulting in a short service life of the solenoid valve; in addition, because the position of the static iron core of the existing proportional solenoid valve cannot be adjusted, the Increased assembly size requirements, which in turn increases processing costs

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