Silent type air locking and feeding valve

Abstract

The invention provides a silent type air locking and feeding valve. Impeller bearings are mounted outside the two ends of a rotating shaft of an impeller in the feeding valve. The impeller is mountedon a valve end cover through the impeller bearings. The valve end cover is fastened to a valve body by bolts. A shaft seal and a shaft seal gland are mounted on the portion, close to the impeller, ofthe valve end cover. A mounting bracket is mounted on the portion, away from the impeller, of the end face of the end cover. Damping blocks and dampers are mounted on the mounting bracket. Damping wheels are mounted at the outer end of the rotating shaft of the impeller. A valve body is mounted on an outlet of a hopper through a flange. The hopper is communicated with a feeding opening of the valve. The impeller of the feeding valve is offset from a valve passageway, the diameter of the impeller is large, an access door can be conveniently arranged on the side of the valve body, and the operation and maintenance are easy and convenient; and moreover, the dead weight of piled materials is matched with the installation position of the rotating shaft of the impeller and the structure of the impeller, and thus the matching movement of air locking and feeding is realized, and the operation is simple and reliable.

Description

technical field [0001] The invention relates to the field of valves and machinery, in particular to a silent air-lock feeding valve. Background technique [0002] The feeding valve is a special equipment used for frequency conversion speed regulation, uniform feeding and metering in the process of conveying bulk materials. At present, there are many types of air-lock feeders used in production on the market, with various structural forms, but they can be roughly classified into two types in terms of working principles: one is the flap-type air-lock feeder, and the other is the star-shaped feeder. feeder. The flap-type air-lock feeder uses the reciprocating swing of the valve plate to realize the intermittent supply of pipeline materials. Since the movement of the valve plate is a reciprocating swing, there will be a process of the valve plate hitting the valve seat during this movement, resulting in noise pollution, which is an urgent problem for environmental protection. ...

AI Technical Summary

Problems solved by technology

Since the center of the impeller support shaft is located on the center line of the inlet and outlet channels, the material fed into the feed port is symmetrical to the impeller shaft, so the moment generated by the material is balanced. It is necessary to transfer the material above the impeller to the bottom of the impeller. Additional driving power is required, which consumes energy; in addition, the gap between the impeller and the valve body is relatively large, which brings about the problem that the large particles in the bulk material are likely to cause valve jamming, resulting in motor power overload adjustment

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