RU1822848C - Device for dosed feeding of loose material - Google Patents

Abstract

Usage: storage and unloading of bulk material in metallurgy, construction, etc. ofas x. SUMMARY OF THE INVENTION: A vibratory device is placed on a truncated-conical hopper formed by a set of coaxially arranged one after another rings of different diameters, having a rectangular triangle in cross section. The inner diameter of the lower ring is equal to the diameter of the outlet pipe. Under the lower ring, two nozzles with check valves are mounted in the wall of the hopper to supply compressed air and accelerate the movement of the dosed material. The device provides a metered outflow of material with high adhesive ability and requires less energy for vibration. 2 ill. (L C

Description

The invention relates to devices for storing and unloading bulk materials and can be used in metallurgy, construction and other industries. In particular, it may find application in the unloading of flotation concentrates, for example barite, for packing in paper bags.

The purpose of the invention is to provide the possibility of dosed flow of a material with high adhesive ability while reducing energy consumption for vibration.

In FIG. 1 shows the proposed device, a General view; in FIG. 2 - section of the ring.

An operating element 3 of the vibrator 4 is placed in the hopper 1, equipped with an output nozzle 2. An electromagnetic, pneumatic or mechanical vibrator can be used. The rings of the working body 3 are interconnected by four guide rods 5, providing rigidity of the working body. The rings are connected to the hopper body by springs 6, which provide the vibrating body with the possibility of movement in both vertical and horizontal directions.

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The device operates as follows,

A portion of the powdered material is loaded into the hopper. A paper bag with a valve is put on the outlet pipe of the hopper. The valve is opened, compressed

air, inflating the bag, and at the same time turn on the vibrator.

For air supply, two nozzles with check valves located at the bottom of the hopper are used. As the operating experience of the device has shown, due to the acceleration of the movement of the dosed material by the air jet, the clogging of the outlet pipe does not occur. Air is supplied tangentially through check valves designed to prevent clogging of the air supply nozzles in the absence of pressure.

The application of vibratory action compacts the material in the hopper, which prevents the formation of air channels,

Between the rings of the vibroorgan and the wall of the hopper there are coil springs that enter one of the ends into cylindrical channels made in the rings. The springs are fixed in the channels using a cotter pin. Thanks to the springs, it is possible to move the vibrator in both vertical and horizontal positions.

The cross-section of the rings in the form of a right-angled triangle ensures the compaction of the mass of the dosed material under the ring and the free fall of the material under it. This helps to block the air channels and ensures the operation of the device at a lower frequency and amplitude of oscillations, i.e. at lower energy consumption compared to O-rings or discs.

The vibroorgan in its specific design should provide vibrotransport of the dosed material at the site of transition of the hopper into the pipeline. Pneumatic conveying is provided by supplying air to the region between the outlet pipe and the lower ring of the vibratory organ.

The proposed bunker device in comparison with the known ones not only effectively destroys the arches formed in the material, but also compacts the material, preventing the formation of air channels, easy to manufacture, reduces energy consumption for vibration and increases speed

expiration of bulk material.

Claims (1)

SUMMARY OF THE INVENTION A device for dispensing bulk material, comprising a hopper with an outlet pipe, a vibrating device formed by a set of rings coaxially arranged in the hopper one below the other and connected to the drive, and a pneumatic conveying system, characterized in that. in order to create a metered outflow of material with high adhesive ability and reduce energy consumption for vibration, the hopper is made in the form of a truncated cone, the rings have a different diameter and in cross section a shape a right triangle, the inner diameter of the lower ring being equal to the diameter of the outlet pipe, and the pneumatic conveying system contains two pipes and check valves for supplying compressed air mounted in the wall of the hopper under the lower ring. Looc Figure 1 FIG. 2