SU1757954A1 - Device for weighing loose materials - Google Patents

Abstract

Usage: the invention relates to dispensing devices and can be used in the chemical, medical and food industries for packaging and packaging bulk materials. SUMMARY OF THE INVENTION: A device for dispensing bulk materials comprises a disk 2 mounted on a shaft 1 with adjustable volume cups 3, 4, an automatic valve consisting of a body 5, a cover 6 movably attached to it, a spring-loaded contact roller 7, a spring 8 , fixed cam 9, vibrobunker 10 mounted on flexible brackets 11, vibrodrive containing an electromagnet 12c with an adjusting bracket and a level sensor 14, a screw loader 15, guide funnels 16 for supplying dozi

Description

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The implementation of a device for dispensing bulk materials improves the accuracy of dosing by improving the material's flowability and uniform density when exposed to vibration, as well as controlling the density of the material by a given drop in the level of the material in the bunker. An automatic valve provides a quick emptying of the glass, limited only by the acceleration of the free fall of the material into the guide funnel. 2 Il.

The invention relates to dispensing devices and may be used in the chemical, medical and food industries for packaging and packaging bulk materials.

A device for metering bulk materials is known, comprising a carousel with measuring cups mounted on a shaft, a bunker and a scraper located above it, a container holding device associated with a weighing mechanism

However, the prior art device does not provide highly accurate dosing due to the discrete effect of additional pusher cells that complicate the design of the device.

The closest to the invention to the technical essence and the achieved result is a device for dispensing bulk materials, containing a merry-go-round carousel mounted on the shaft with measuring cups, a hopper and a scraper located above it, a tare device connected to the weight mechanism, a fixed disk with a discharging device. window and metering holes, and below it, the dampers are driven by a weight mechanism.

A disadvantage of the known device is the low productivity and inaccuracy of the dosage of small portions of the material due to the inertia of the weight mechanism. With increasing speed of rotation of the device, it is necessary to fill a large mass of material in order to overcome the inertia of the parts of the weighing mechanism and have time to weigh in the weighing zone.

The purpose of the invention is to improve the performance and accuracy of the dosage.

This goal is achieved by the fact that the beakers have volume adjustment and an automatic valve at the bottom of the beaker. There is a loading unit for metering material into the loading bin, electrically connected to the loading unit, a material level sensor and a vibrating drive-exciter of oscillations of a spring-loaded bunker, to bring the product into a fluidized state.

FIG. 1 shows a device for metering bulk materials, a general view; in fig. 2 - the same, top view.

Device for dosing bulk

materials contains mounted on the shaft 1 carousel in the form of a disk 2 with glasses with adjustable volumes 3 and 4 fixed on it, an automatic valve consisting of body 5, cover 6 movably attached to it, spring loaded contact roller 7, spring 8, fixed cam 9 , vibrating hopper 10 mounted on flexible brackets 11, vibrodrive containing an electromagnet

12 with an adjusting bracket 13, a level sensor 14, a loading unit 15, guide funnels 16 for delivering the metered material to the container 17.

The device works as follows.

When the disk is rotated, the 2 measuring glasses 3 and 4, the passage in the loading area under the hopper 10, are filled with bulk material through the holes in the bottom of the hopper 10, the bottom of

cup 4 at this point is closed by a cover b with the help of a spring-loaded roller 7 interacting with a cam 9 located along the radius of rotation of the glasses 3 and 4. When a filled cup 3 and

4a, the spring-loaded roller 7 loses contact with the cam 9, the cover 6 rotates on an axis fixed in the valve body 5, and the material is poured into the guide funnel 16 and further into the container 17. When

Further rotation of the disk 2 measuring glasses 3 and 4 leave the discharge area, the spring-loaded roller 7 hits the bevelled part of cam 9, and valve cover 6 closes the bottom of measuring glass 4. Then the cycle repeats.

During the rotation of the disk 2, the electromagnet 12 oscillates the bunker 10 and brings the bunker contents into a fluidized state, which improves the material flowability and uniform density in the volume of the bunker 10 with material consisting of elongated particles (for example, cucumber seeds, carrots, flour products of the type vermicelli and etc.). The amplitude of oscillations of the bunker 10 is controlled by a spring clip 13, which limits the course of the core of the electromagnet 12. When the material is fed into the hopper 10 by the loading unit 15, a level sensor 14 is activated, which turns off the drive of the loading unit 15 and turns on the time relay. After working off the time relay, the boot node 15 turns on and the cycle repeats. The loading unit 15 feeds into the material hopper 10 as much as the cups 3 and 4 are consumed, which helps maintain the average material density determined by the minimum and maximum material levels in the hopper.

Thus, a device for dispensing bulk materials allows for improved metering accuracy by improving the flowability and uniform density of the material. The cup is unloaded quickly, limited by the acceleration of the free fall of the material,

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Claims (1)

Apparatus of the Invention A device for metering bulk materials, comprising a disk-mounted carousel with measuring cups, a hopper above it, a fixed disk mounted under the carousel with a discharge window and a profiled cam, characterized in that in order to improve metering accuracy and productivity it is equipped with an automatic valve installed on the underside of the disc, consisting of a housing with a lid movably attached to it, with a spring-loaded contact roller with the ability to interact with the open end of the measuring cup and the profiled cam, respectively, each measuring cup is made with an adjustable volume, the hopper is mounted on flexible brackets and equipped with a vibro drive and a loose material level sensor fixed on it, electrically connected to the drive of the loading unit. grandfather A Zone Zog / Edzha FIG. Z Jaw upload