Star type feeding valve

Abstract

The invention discloses a star type feeding valve. The feeding valve comprises a shell and a rotor impeller located in the shell; the shell is provided with a feeding opening and a discharging opening; the rotor impeller is provided with a plurality of center plates, the two sides of the feeding position of the rotor impeller are both provided with glands, the lower ends of the glands are buckled on the outer edge of at least one center plate of the rotor impeller, and a feeding channel communicated with the feeding opening is formed in the upper ends of the glands on the two sides; the shell is further provided with an elastic compressing device, and the elastic compressing device compresses the glands so that the glands and the rotor impeller are in seal contact at the buckling position of the glands and the rotor impeller; and the star type feeding valve can achieve long-time effective sealing.

Description

technical field [0001] The invention relates to the field of feeding devices, in particular to a star feeding valve. Background technique [0002] In the fields of electric coal-fired boilers, waste incineration, cement, flue gas desulfurization, etc., the transportation of powdery materials is involved. When conveying powdery materials, in order to avoid conveying difficulties caused by too much material entering the pipeline, a feeding device (such as a screw feeding valve or a star feeding valve) is generally installed at the outlet of the silo to achieve uniform feeding. Because the star-shaped feeding valve has the characteristics of accurate quantitative and easy adjustment, at present, most of the feeding valves used for continuous and uniform feeding on the market are star-shaped feeding valves. [0003] Please refer to figure 1 , figure 1 It is a structural schematic diagram of a star feed valve in the prior art. [0004] like figure 1 As shown, the star feed v...

AI Technical Summary

Problems solved by technology

[0005] During long-term use, the rotor impeller 2 or the inner wall of the housing 1 will be greatly worn, and a gap will start to form between the housing 1 and the rotor impeller 2, and the sealing effect will gradually deteriorate, and the effect of air lock cannot be achieved. Affects the continuous and uniform discharge of materials from the discharge port

During the maintenance process, if the inner wall of the casing 1 is severely worn, it cannot be replaced, which directly causes the star feed valve to be unusable; if the rotor impeller 2 is severely worn, although it can be replaced, it will inevitably lead to a decline in production efficiency and The increase in equipment maintenance costs is not conducive to the cost-saving and efficiency-enhancing of enterprises

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