Star-shaped discharging valve with protecting structure

Abstract

The invention relates to a star-shaped discharging valve with a protecting structure. The star-shaped discharging valve with the protecting structure comprises a shell, a rotor and a flange cover, wherein the rotor comprises a rotating shaft; a plurality of blades with U-shaped cross sections are arranged on the periphery of the rotating shaft; circular side plates are arranged at the left side and right side of each blade; an expansion sleeve matched with the rotating shaft is arranged in the center of each side plate; a buffering cavity is arranged between each side plate and the flange cover; a cylindrical inner protecting sleeve is arranged in the buffering cavity; a cylindrical upper protecting sleeve is arranged at the outer side of the inner protecting sleeve; a cylindrical lower protecting sleeve is arranged at the inner side of the inner protecting sleeve; a mounting hole matched with the rotating shaft is arranged in the center of the flange cover; and a shaft sleeve matched with the expansion sleeve is arranged at the outer side of the mounting hole. The star-shaped discharging valve with the protecting structure has the beneficial effects that dust and powdery materials on the discharging valve are convenient and fast to clean through matching of an air bag and a hairbrush layer under the multiple protection effect of a material blocking plate, the upper protecting sleeve, the lower protecting sleeve, the inner protecting sleeve and the shaft sleeve, the cleaning efficiency is high, the implementation effect is good, the rotor is prevented from being locked up, and the service life of equipment is prolonged.

Description

[0001] technical field [0002] The invention relates to a star discharge valve, in particular to a star discharge valve with a protective structure. Background technique [0003] The star discharge valve, also known as the star unloader, is a rotor with several blades that rotates in the inner cavity of the casing. The inner cavity of the casing is cylindrical; the material falling from the upper hopper is filled in the The space between the blades is discharged with the rotation of the blades, so the star discharge valve can discharge quantitatively and continuously. [0004] In the existing star-shaped discharge valve, several rectangular blades are welded on the rotating shaft to form the rotor. There is a gap between the rotor and the casing. When the gap between the rotor and the casing is too large, the star-shaped discharge valve Material leakage is easy to occur; even if the gap between the rotor and the casing is small enough, dust and powdery materials can easily...

AI Technical Summary

Problems solved by technology

[0004] In the existing star-shaped discharge valve, several rectangular blades are welded on the rotating shaft to form the rotor. There is a gap between the rotor and the casing. When the gap between the rotor and the casing is too large, the star-shaped discharge valve Material leakage is easy to occur; even if the gap between the rotor and the casing is small enough, dust and powdery materials can easily infiltrate from the gap between the rotor and the casing under the long-term operation of the star discharge valve. And accumulate on the shaft of the rotor, not only aggravate the wear of the rotor, but even cause the rotor to lock up, reducing the service life of the equipment

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