A double-tube powder quantitative feeding device

Abstract

The invention discloses a double-pipe type powder quantitative feeding device, which comprises: two sets of rotating drums with opposite directions and several sets of discharging turntables, which are horizontally arranged in parallel; The unloading turntables arranged crosswise on the two sets of rotating drums; the two sets of distributing silos whose upper part communicates with the uniform material silo, the bottom communicates with the screw conveyor, and the upper and lower parts are equipped with material level gauges; the two sets of turntables The cylinders are respectively fixed on the transmission shaft and the driven shaft. The front part of the transmission shaft is provided with a driving gear, and the front end of the driven shaft is provided with a driven gear. The driving gear and the driven gear are meshed. The upper part of the material silo and the upper part of the uniform material silo are provided with a feed pipe, and the distance between the walls in the left and right direction of the feed pipe is smaller than the horizontal distance between the centerlines of the two groups of drums. The present invention has the advantages of simple structure, low cost, It has the advantages of high control precision and good running stability.

Description

technical field [0001] The invention belongs to the technical field of quantitative feeding, and in particular relates to a double-tube powder quantitative feeding device. Background technique [0002] The screw conveyor has the advantages of simple structure, small cross-sectional size, good sealing, reliable operation, low manufacturing cost, and convenient intermediate loading and unloading, and is widely used in the field of continuous conveying of powder materials. The delivery volume is directly proportional to its rotational speed. In the process of automatic feeding of powdery materials, screw conveyors are usually used to undertake the task of accurately feeding materials to the equipment. [0003] The existing screw conveyors are all directly installed at the bottom of the powder silo, which causes the silo pressure exerted by the powder on the screw conveyor to be in a large fluctuation state all the time, resulting in a deviation between the delivery volume of t...

AI Technical Summary

Problems solved by technology

[0003] The existing screw conveyors are all directly installed at the bottom of the powder silo, which causes the silo pressure exerted by the powder on the screw conveyor to be in a large fluctuation state all the time, resulting in a deviation between the delivery volume of the screw conveyor and the delivery volume at the design speed , in the existing technology, there is an attempt to solve the problem by installing an unloader between the silo and the screw conveyor, but in the case of poor powder fluidity, it often leads to a gap between the powder silo and the unloader. bridging of powders, often resulting in interruption of powder delivery

At the same time, there is also the problem of bridging when the screw conveyor is directly installed at the bottom of the powder silo

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