Powder volume metering equipment

Abstract

The invention relates to a continuous material conveying device, in particular to a powder volume metering device used in a powder metering system of an asphalt mixture cold regeneration mixing equipment. The device includes an impeller feeder, a transition hopper and a partition trough feeder arranged in sequence from top to bottom. The feed inlet of the transition hopper is connected with the discharge part of the impeller feeder, and the outlet The material opening is connected with the material receiving part of the split trough machine. Because the present invention adopts two-stage conveying metering, it can eliminate the uneven powder conveying, poor conveying accuracy, or the influence of the air pressure change in the powder bin when the original two kinds of powder feeders are separately metered. It is difficult to ensure the stability of the logistics speed, so that the output powder is continuous, uniform and stable.

Description

technical field [0001] The invention relates to a continuous material conveying device, in particular to a powder volume metering device used in a powder metering system of an asphalt mixture cold regeneration mixing equipment. Background technique [0002] The powder metering system of asphalt mixture cold recycling mixing equipment generally adopts two-stage metering, the first stage is volumetric metering, and the second stage is electronic metering of screw scales. In order to ensure the accurate metering of powder materials, it must first ensure that continuous, uniform and stable logistics can be provided during volumetric metering. The primary volume measurement of the existing equipment generally adopts the impeller feeder or the separated trough powder feeder. The structure of the impeller feeder is that there is a rotating shaft in the center of the feeder shell, and a plurality of blades are evenly arranged on the rotating shaft along the radial direction of the ...

AI Technical Summary

Problems solved by technology

The structure of the impeller feeder is that there is a rotating shaft in the center of the feeder shell, and a plurality of blades are evenly arranged on the rotating shaft along the radial direction of the rotating shaft to form an impeller. The impeller divides the inner cavity of the feeder shell into several cavities. The powder is input from the inlet above the feeder, through the rotation of the impeller, the powder is transported downwards from the corresponding cavity by multiple blades, when the blades turn to the outlet below the feeder, the impeller is empty The powder in the cavity is immediately conveyed from the discharge port, and the powder in the next cavity cannot be conveyed until the next blade reaches the discharge port. This structure will lead to uneven powder transmission and poor conveying accuracy.

For the separated trough feeder, it will be affected by the air pressure change in the powder bin, and it is difficult to ensure the stability of the logistics speed, thus affecting the accuracy of powder metering

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