SU1305062A2 - Device for metering loose materials - Google Patents

Abstract

The invention is intended for packaging bulk materials and allows for improved metering accuracy and ease of operation. When the shaft 22 rotates, the volumetric cups 4 and the nozzles 25 coaxially extend through the loading, weighing and unloading zones. In the weighing zone, copier 16 smoothly turns on the weighing mechanism and the missing material is scraped through the emptying glass into the container through the metering holes 11 into the container 24. When the weight of the portion equilibrates counterweight 17, the spring-loaded electrical contact 28 of the weight lever 8 drops onto the current projectile - a water half ring 26. When the desired weight is reached, another contact ring 27 will fall onto the other conductive half ring and switch on the electrical circuit to close the metering holes with the gate 12. 2 Cp. f-ly, 4 ill. 20 (L have eaten oi y fsj

Description

The invention relates to metering devices, can be used in the chemical, construction, and impoverished industry for the packaging and packaging of bulk and working materials, and is an improvement of the invention according to the authors. St. № 1 127808.

The purpose of the invention is to improve the accuracy of dosing and improve ease of operation by simplifying the settings when switching to another product.

FIG. 1 shows the proposed device, a general view; in fig. 2 is a section A-A in FIG. one; in fig. 3 - the device, view from above (without a casing); in fig. 4 is a section BB in FIG. 3

The device for dosing bulk materials contains a hopper 1 with a regulator 2 volume volumetric glasses, an upper carousel; ib 3 with dimensional cups 4 and removable inserts 5, a lower carousel 6 with earrings 7 for suspension of the weight lever 8, a fixed disk 9 s the discharge window 10 and the metering holes 11, under which are installed the dampers 12, driven by the pneumatic cylinder 13 according to the signal of the weight mechanism, which contains three weight levers 8, rollers 14, weight hinges 15. Each weight lever 8 has a copier 16, counterweight 17, adjusting p ив 18. weight 18. Rollers 14 are mounted on brackets 19, which are fixed to a fixed disk 9. A scraper 21 is mounted above the carousel 3, closed by a casing 20. The upper and lower carousels are fixed on a common shaft 22 and rotated by the actuator 23. In addition, the device has a device (not shown) for fastening the container 24 on the nozzle.

Concentric with the shaft 22, at least two conductive insulated semirings 26 are placed, connected in series to the control circuit of the valve 12, and at least two short-circuited contacts 27 and 28 are fixed on the arm of the weight lever 8 facing the shaft. All contacts except one are spring-loaded .

The device works as follows.

When the shaft 22 is rotated in the direction of the arrow, the co-located glasses 4 and the nozzles 25 pass through the loading, unloading and weighing zones.

In the loading zone, the material from the hopper 1 enters the measuring cup 4 and on the carriage; ib 3, while the stationary disk 9 serves as the bottom for the measuring cup 4. The volume of the neural dose is controlled by the thickness of the layer of material on the carousel 3.

In the unloading zone, the material from the measuring cup 4 through the discharge port 10 and the nozzle 25 is poured into the container 24, for example, into a cardboard box. In the loading and unloading areas, the weight lever 8 is locked in a static position by a copier 16 and roller 14, which take up the load when the tare 24 is installed and removed and filled with the preliminary batch material. In the weighing area, the copier 16 smoothly turns on the weight lever 8

into creep mode. The material from the carousel 3, which is missing to the full portion, is guided by the scraper 21 through the measuring cup 4 emptied in the previous zone to the metering holes 11, through which a thin stream is poured into the container 24.

When the weight of the batch equilibrates counterweight 17, the spring-loaded electrical contact 28 of the weight lever 8 drops onto the conducting half ring 26. When the weight of the batch reaches the specified value for another

- the conductive half ring 26 lowers the contact 27 of the weight lever 8 and switches on an electrical circuit with a current source to move the rod of the pneumatic cylinder 13 to close the metering holes 11 with the flaps 12. At the end of the weighing zone the copier

0 16 and the roller 14 lock the weight lever 8 into a static position, the electrical circuit is opened, the metering holes 11 are opened to feed the next batch. In the loading zone, the filled container 24 is replaced with an empty one. The cycle is repeated.

 For setting the device for metering other material or in a container other in volume, inside the measuring cups 4 of the corresponding volume, removable inserts 5 are installed, in the counterweight 17 of the weight lever 8 - weights-counterweights, on the nozzle 25 - control weights and by moving the adjusting counterweight 18 26 half-rings, pins 28 and 27. With a greater number of contacts on the weight lever 8

 and conductive semicircles 26, more accurate metering is performed by discretely or continuously reducing the cross section of the metering holes 11.

Claims (3)

1. Device for dispensing bulk materials according to ed. St. No. 1127808, characterized in that, in order to improve the metering accuracy, it is equipped with at least two conductors of c.1.is interconnected half rings, placed concentrically with the shaft and connected in series in the flap control circuit, and each weighing arm mekhanizma.ma - at least two spring-loaded, except for one, short-circuited-curved contacts, placed on the weight lever's shoulder facing the shaft, with the possibility of each of them interacting with the corresponding half-ring, This counterweight weight mechanism consists of counterweights, each of which is located on the other arm of the respective weight lever. j 1305062d 2. The device according to claim 1, wherein the counter load is a store that, in order to improve the usability, ation by simplifying the settings when switching to another product, each weight 3. The device according to PP. 1 and 2, the differential lever is provided with an adjusting counter-5; each measuring cup is equipped with a weight, placed on its first shoulder, with a removable insert. 20 nineteen U  / T / 77 1 15 25 15 7 P Aa FIG. g 21 25 YU Fig.Z