SU1585238A1 - Hopper metering device - Google Patents

Abstract

The invention is intended for the dosed supply of powdered materials, in particular labor-free, multicomponent materials, and can be used in the microbiological, chemical, pharmaceutical and food industries. The aim of the invention is to improve the quality of the dosed material by eliminating segregation and improving the reliability of operation. Inside the casing, an axis 6 is mounted on its axis, on which a ribbon helix 7 is fixed. In the neck 3 a feeder 8 is placed, which is connected to the shaft 6 through a joint assembly made in the form of a flexible rod-like element 11. The drive shaft is additionally equipped with scrapers 18 from antifriction material that is spring-loaded to the conical surface of the hopper. 2 hp f-ly, 3 ill.

Description

The invention relates to bunker devices for the dosing of powdered materials, in particular multicomponent, i.e., loose materials, and can be used in microbiological, chemical, pharmaceutical and food industries.

The purpose of the invention is to increase the quality of the material to be dosed by eliminating segregation and increasing reliability of operation, i. In FIG. 1 shows the device: a general | view; in fig. 2 - connection of the screw feeder with the drive shaft; Fig. 3 shows the structure of the joint of the scrapers and the shaft.

The bunker metering device includes a housing 1 with a conical 20 part 2 and a discharge mouth 3. Outside the housing is equipped with a drive 4 and a charging nozzle 5. Inside the housing there is a shaft 6 attached to the drive 4. Axis 25 is fastened to the shaft 25 to move and loosen the material.

8 mouth 3 placed feeder 8. The working part of the feeder is made

in the form of a removable screw sleeve 9 of antifriction material. Sleeve

9 is fixed on the feeder due to the internal thread and the fastening element Y. The screw sleeve 9 and the spiral 7 can have both the same and

the opposite direction of the coils (depending on the properties of the working material). The feeder 8 is connected to the shaft 6 by means of a joint assembly made in the form of a flexible rod-like element 11. The rod-shaped element 11 has shoulders 12 and 13, which are embedded in the respective longitudinal grooves 14, 15 of the drive shaft 6 and the screw feeder 8. Axial fixation of the rod-shaped element 11 carried nuts 16 and 17.

The drive shaft 6 is equipped with a scraper 18 of antifriction material, which is spring-loaded to the conical surface of the bunker by means of elastic elements 19. The latter are mounted on sliding tabs 20 and 21. The tee 20 is rigidly connected to: a hydraulic shaft 6, and gi 21 - with corresponding scrapers. In this case, gigs 21 are equipped with shanks 22

thirty

35

40

45

0 5

d

0

five

0

45

which enter the holes of 23 t g 20.

The device works as follows.

The working material is loaded into the hopper 1 through the nozzle 5. Then the shaft 6 is driven by the drive 4. Together with the shaft 6, the ribbon helix 7, the screw feeder 8 and the scrapers 18 are set in motion. The ribbon helix 7 moves the material to the discharge port 3 .. At the same time, the scrapers 18 clean the material from the tonic surface 2 of the bunker and drop it down. In this case, the elastic element 19 acts on the sliding rods 20 and 21, ensuring the movement of the shank 22 in the hole 23 and the clamping of the scraper 18 to the surface of the conical part 2 of the hopper.

The rotation of the screw feeder 8 is carried out from the drive shaft 6 through the shoulders 12 and 13 of the flexible rod-like element 11, thus providing the centering of the feeder, eliminating its jamming.

Multicomponent materials are loaded during the operation of the bunker. At the same time, the shaft 6 is rotated so that the screw feeder 8 and the ribbon helix 7 move the material from the neck upwards until the hopper is fully loaded. Then the actuator 4 is switched to the reverse and it rotates the shaft so that the screw feeder and the ribbon helix will freeze the material down for unloading. This protects the material from caking and ensures its reliable unloading with a sufficient degree of uniformity of material feed.:

Depending on the material properties of the screw sleeve 9, the ribbon helix 7 may have the opposite direction of the turns. In this case, the spiral will constantly move the material up, and the screw feeder will unload it.

The use of the invention eliminates the phenomenon of segregation and improves the quality of the material at the outlet; to ensure the complete emptying of the bunker and to reduce the percentage of material loss; to increase the service life of the metering hopper by 1.5-2 times and to increase the unit capacity of the bunker (its capacity) by 40-50%.

ten

Fig2

21

18

(PU2.J

Claims (3)

britten Form mu l a iso 1585238 “I’m friction material, with a knot 1. Bunker dosing device, comprising a housing with an unloading neck in its conical part, a shaft with a tape spiral fixed to it, a screw feeder connected to the shaft in the neck, a shaft drive, characterized in that, | in order to improve the quality of the dosed material by eliminating segregation and increasing the reliability of work, it is equipped with mounted on a shaft in the area of the conical part of the housing; With spring-loaded scrapers made of anti, the connection between the shaft and the feeder is made in the form of a flexible rod-shaped element. 2. The device according to π. 1, characterized in that the working part of the feeder is made in the form of a removable sleeve of antifriction material. 3. The device according to paragraphs. 1 and 2, characterized in that the removable screw sleeve is made so that the direction of its turns coincides or is opposite to the direction of the turns of the spiral.