Eccentric star-like cinder valve

Abstract

The invention discloses an eccentric star-like cinder valve. The eccentric star-like cinder valve is used for discharging ash and unloading below an ash bucket and a storage bin in the industry such as environmental protection, metallurgy, building materials and the like. The eccentric star-like cinder valve mainly solves the technical problems that materials in a conventional cinder valve cannot be fed uniformly and the like. The technical scheme comprises the main points that: an impeller is arranged in a cavity of an eccentric shell which is similar to a volute shape; bearings are arranged at the two ends of the shell; end covers and the like form approximately closed space with the shell; a material inlet hopper and a material outlet hopper are arranged on the upper surface and the lower surface of the shell; and a material inlet is formed on one side of the radial direction of the impeller and is deviated from the rotation geometric centre of the impeller. The gravity of materials entering the impeller from the material inlet generates tangential force to one side of the impeller, so that the impeller is rotated automatically. A shaft end connected with the impeller is extended out of the shell, and an electromagnetic brake is arranged on the shaft end, so that the impeller is controlled to be rotated according to expected requirements. Or a motor speed reducer is arranged on the shaft end, the motor speed reducer plays a role in boosting when the gravity of the materials is not enough and the impeller is rotated automatically. The cinder valve in the eccentric structure has no air leakage and gas leakage phenomena, can rotate automatically without additional power in general situations, and can fulfill the aim of discharging ash; the power of a matching motor is only 1 / 3 to 1 / 5 of a conventional valve; an energy-saving effect is very obvious; the structure is simple; the manufacturing cost is low; and the eccentric star-like cinder valve is convenient to maintain.

Description

technical field [0001] The invention relates to an ash hopper used in industries such as environmental protection, metallurgy, mining, chemical industry, building materials, etc., in particular to a valve used for ash discharge, material discharge and material feeding under a silo. Background technique [0002] At present, there are mainly two types of ash unloading, ash discharge, and feeding devices used in hoppers, silos, ash silos and other equipment. One is a star-shaped ash unloading valve, also called a rigid impeller feeder, and the other is a flap valve. [0003] The structural principle of the flap valve is: use the weight of the material in the silo or ash hopper to press the valve plate to open the valve plate, and after a certain amount of material in the silo and ash hopper is unloaded, the pressure on the valve plate will decrease automatically. closure. The extended end of the valve plate shaft is provided with a screw and a weight. Adjust the position of t...

AI Technical Summary

Problems solved by technology

First of all, the phenomenon of gas flow and air leakage is serious, and the application effect in the ash hopper of the pneumatic conveying system and dust removal system is not very good.

Two can not guarantee uniform and stable discharge

The unevenness of unloading, the valve cannot be used in the feeding system, and the third is that the valve plate is easily deformed, making the closing not tight, especially when the cylinder or push rod is used to open and close.

Fourth, its structural size is often large

Unfavorable for the space arrangement at the silo hopper

5. In order to ensure that there is no air leakage during unloading, the movements of the upper and lower valve plates of the flap valve are not synchronized, and a certain time difference is required. When remote control is realized, the complexity of control is increased.

Rotation speed slows down, ash discharge or feeding capacity decreases

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