SU1078250A1 - Device for batching loose materials - Google Patents

Abstract

1. A DEVICE FOR DOSING OF BULK MATERIALS, containing a cylindrical loading hopper; a carousel located underneath with measuring cups made in the form of pistons, and a device for delivering doses, characterized in that, with the aim of increasing productivity by reducing losses. when the dose is delivered, the Boxer is rotatably mounted eccentrically with respect to the axis of the carousel, and the dose dispenser is designed as an impeller mounted on the outer side surface of the hopper. 2. A device according to claim 1, characterized in that, in order to reduce the energy intensity, the bottoms of the measuring cups are installed with possibly a protrusion above the working surface of the carousel.

Description

The invention relates to the field of bulk dosing of bulk materials and can be used in the food industry, in industrial and construction materials, in agriculture and other branches of the native sector. Dispensers for bulk materials are known, which contain a rotating disk with measuring cups, a loading container, a fixed base with an unloading window, a partition for removing bulk material and a device for emptying measuring tanks 1 and 2. The disadvantage of these dispensers is low accuracy when dispensing hard bulk materials (flour, starch, etc.), since filling volumetric glasses with bulk material takes place under the weight of the material. A device for metering materials is known, which contains a loading hopper and measuring glasses mounted under it on a carousel with bottoms made in the form of pistons. As the bottom moves downward, the material is sucked into the measuring cup from the bunker, and in the lowest position of the bottom, when it leaves the glass, it will discharge the dose into the discharge box 3. However, the known device, although it provides improved accuracy of metering of difficult-to-flow materials, has low productivity due to the need to remove the bottoms from the measured L cups and remove them to the side to pour out the measured doses, which limits the possible rotational speed of the carousel. In addition, when dosing hard-flowing materials, the removal of bottoms from measuring cups, the removal of them from the bottom during a rash, causes excessive dispersion of the dosing materials. The aim of the invention is to increase the productivity of puffs of pulverized materials and reduce the power consumption of the device. The set 55 goal is achieved by the fact that in the device for dosing bulk materials, there is a cylindrical loading bunker, a carousel located under it with measuring cups made in the form of pistons, and a device for issuing doses, the bunker is installed with the possibility of rotation eccentric relative to the axis of the carousel, and the dose adjustment device was made in the form of a impeller mounted on the barrel side surface of the hopper. In this case, the bottom of the measuring glasses are installed with the possibility of protrusion above the working surface of the carousel. The drawing shows schematically a device for metering bulk materials, axonometrics. The device has a vertical cylindrical hopper 1 with impeller 2 in the lower part, carousel 3 and fixed base 4. Carousel 3 has concentric holes 5 in which measuring glasses b with bottoms 7 and rods 8 are mounted. Carousel 3 is located eccentrically relative to the axis of the bunker 1 in such a way that a part of the measuring glasses b is under the hopper 1, and a part goes beyond the limits and moves between the blades of the impeller 2. There is a hole 9 in the base to clear the material to be dosed. The device works as follows. Bulk material, such as flour, starch, fills the hopper 1 and from it under the action of its own weight enters the rotating carousel 3-. The measuring cups alternately go under the hopper 1, the bottoms of the 7 volumetric cups are at the level of the carousel plane 3. When passing under the hopper 1, the bottoms 7 descend to the lowest position, soaking up certain portions of the product to be dosed. When the next measuring cup b comes out from under the hopper 1, the excess dosing material is swept away by the lower edge of the latter, and the bottom 7 rises to the extreme upper position, protruding above the plane of the carousel 3, pushes a portion of the dosing material into one of the sectors between the blades of the impeller 2 and, from the blade located in the direction of rotation, rotates the impeller 2 by one step, driving its next sector to the initial position. Due to the eccentricity of the hopper 1 with respect to the carousel 3, the portions of the material being metered are dropped by the blades of the impeller 2 from the surface of the carousel 3 into the hole 9 made in the fixed base 4. Thus, given doses of granular product are given at regular intervals, the movement of the bottoms 7 carried out through the rods 8 special-. Nim copier (not shown). The pulsing rotation of the hopper I together with the impeller 2 prevents the product from hanging. The performance of the device with high accuracy and within tight limits can be adjusted by changing the speed of rotation of the carousel 3 and the stroke of the bottoms 7,

The ejection of portions of the dosed bulk material through the top of the measuring cups by the bottoms makes it possible to use both moves of the latter to perform useful work, to increase the speed of rotation of the carousel and to increase the productivity of the device without disturbing its normal operation. Eliminating the withdrawal of bottoms through the bottom glasses and discharging them to the side simplifies the design of the device, increases its reliability and ensures the smoothness of the work necessary to prevent spraying of the material being metered and the associated losses.

As a basic object of the proposed device for dispensing bulk materials can serve as a dispenser used in the packaging machine M1-ARF. This dispenser has mounted on rotating carousel glasses, volume

which can be adjusted using telescopic walls. Filling glasses occurs under. the action of its own weight of the dosed product, so this dispenser 5 works effectively when dispensing only free-flowing products, such as cereals, sugar, etc. The calculated dosing rate of these products is 45-55 doses / min with an accuracy of 10 to +1 - 2%. The use of these dispensers for difficult-flowing materials. reduces their performance to 30 doses / min, and the accuracy drops to + 10%.

15

The proposed device, in comparison with the base sample, makes it possible to dose difficult-to-discharge powdered materials, such as flour, starch, 2L ground chalk, without reducing the productivity and dosing accuracy.

Claims (2)

1. DEVICE FOR DOSING OF BULK MATERIALS, containing a cylindrical loading hopper) a carousel placed under it with measuring cups made in the form of pistons, and a device for dispensing doses, characterized in that, in order to increase productivity by reducing losses during the dose, the hopper mounted rotatably eccentrically relative to the axis of the carousel, and the device for issuing doses is made in the form of an impeller mounted on the outer side surface of the hopper. 2. The device according to π. 1, characterized in that, in order to reduce energy intensity, the bottom of the measuring cups are installed with the possibility of protrusion above the working surface § carousel.