SU1495206A1 - Device for metering powder materials - Google Patents

Abstract

The invention relates to devices for the production and dispensing of powder, preferably difficult to flow, materials. The aim of the invention is to improve the accuracy of dosing of powder materials. The device contains a cylindrical bunker 1 with a funnel 2 in the form of a truncated cone attached by a large base to the bunker. The main 4 and additional 6 blades with grids 5 and 7 are fixed on the shaft 3 mounted coaxially with the hopper 1 and the funnel 2. The distance between the batons of the blades with the grids is selected taking into account the angle of inclination of the funnel 2 and the radius of its smaller base. The blades 4, 6, rotating, push the material through the grid, creating a jump in the vertical component of the pressure on the material, which prevents arching and ensures reliable release of material from the funnel. 2 Il.

Description

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About O5

I. The invention relates to devices d: I for the production and dosing of powder, mainly difficult to flow, material / se and can be used in the food industry, chemical industry, in the building materials industry, powder.

The aim of the invention is to improve the accuracy of dosing of powder materials.

FIG. 1 shows a device for dispensing powder materials; in fig. 2 shows the pressure distribution curve in the material along the height of the device.

The device contains a cylindrical bunker I, a funnel 2, made in the form of a truncated cone, attached with a large base to the bunker I, a shaft 3 mounted with the possibility of joining inside the bunker 1 coaxially with it and a funnel 2. On the wa-. ly 3, the lonasty 4 is fixed, and under the blades 4, a fixed grid 5 is mounted. equipped with additional blades 6 with grids 7, which are placed in a funnel 2 Under the main blades 4 and grid 5, in general, the distance is not vertical: 1 and between the grids should not exceed the value of R, where a is the angle of inclination of the ropes; R - |) adius of its minor base.

The device works in the following way.

“LonacTii 4, lie together with valom.m 3, selling, passing through the grids 5 and 7 the hardly flowing material from bunker I to funnel 2. 11thly basic; rusa blades 4 with set5

ABOUT

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ABOUT

This 5 is not enough to reliably release material from the funnel 2. The material sticks to the walls of the funnel 2, completely fills it, and the material discharge stops as the vertical pressure on the material in the zone of the first rus created by the latter decreases in the zone of the lower base of the funnel 2 that the material remains stationary. Additional blades with grids 7 provide the pressure necessary for reliable release on the material (Fig. 2), and the distance between the edges of the blades of the grid is selected taking into account the angle of inclination of the funnel and the radius of its smaller base.

Claims (1)

Invention Formula A device for dispensing powder materials, containing a cylindrical bunker located vertically, a funnel made in the form of a truncated cone, covered with a large base to the bunker, mounted inside the bunker with the possibility of a vrasheni shaft on which the blades are fixed, and a mesh fixed under them that, in order to improve metering accuracy, the shaft is placed along the entire height of the funnel and equipped with additional blades with grids placed in the funnel below the main ones, while the distance between the grid and does not exceed the tga R, and where - the angle of inclination of the funnel obrazuyushey, R - the radius of its smaller base.