SU625972A1 - Apparatus for unpacking bags with loose materials - Google Patents

Description

one

The invention relates to loading and unloading equipment and concerns devices for unpacking bulk bags.

A device for unloading bags with bulk material is known; it contains its unloading chamber with a supporting element located in it, a lance knife mounted on a pipe for supplying air during bag unloading, communicating with the pneumatic system and the mechanism for emptying bags, and adjoining to the discharge chamber hopper for empty bags 1J.

The aim of the invention is to improve the design of the known device by using a pipe for supplying air during the unloading process as a mechanism for removing empty bags.

To this end, the pipe is installed on the shaft with the ability to rotate in the direction of the bunker and back to its original position.

FIG. 1 shows the proposed device, obsh, i view in section; in fig. 2 is a section A-A in FIG. one.

The device comprises an unloading chamber 1 with a manhole 2 in the upper part and a hopper 3 adjacent to the unloading chamber for empty bags. The hatch 2 is closed with a pneumatic cover 4

or hydraulically driven 5. On the side of the chamber 1 there is a hatch 6 for removing the empty bags into the hopper 3. The hatch 6 is closed by a lid 7 with pneumatic or hydraulic actuator 8. At the bottom of the chamber 1 there is a bottom, e 9, inclined towards the material pipeline 10. The bottom e has an aeration trough 11 of porous material.

The fitting 12 serves to supply compressed air to the Nselob I. The side wall 13 between the hatches 2 and 5 is made but with a radius. The support element 14 and the spear-shaped knife 15 mounted on the pipe 16 for supplying air during the bag unloading process are located in the chamber 1. The support element 14 is made in the form of a lattice. The pipe 16 has at the end of the nozzle G / and is located on

A hollow shaft 18, which is mounted in bearings 19 and with help, of the pneumatic actuator 20 and the lever 21 can be rotated by 90 degrees. The pipe 16 through the hollow shaft 18 and the fitting 22 is in communication with the pneumatic system.

At the bottom of the chamber 1 there is a nozzle 23 for supplying compressed air. A guide tray 24 seconds is installed above the camera. track contact 25. The device operates as follows.

By means of the actuator 5, the lid 4 of the hatch 2 is opened. A bag filled with bulk material is fed to the tray 24 and under the action of its own weight enters the tray through the hatch 2 against the stop into the supporting element 14. At the same time, the knife 15 mounted on the pipe 16 pierces and incises the bag from the bottom. The material from the bag begins to pour out on the bottom of the camera, and the bag is held up on the supporting element 14. Under the action of the impulse from the track contact 25, the actuator 5 is activated, closing the lid 4 of the hatch 2, after which the compressed air begins to be fed to the nozzles 12 and 22. Compressed air through the nozzle 12 is supplied to the aeration chute 11 and, after passing through the porous partition, begins to aerate the material on the bottom. Compressed air entering through the nozzle 22, passes through the hollow shaft 18 into the pipe 16 and the nozzle 17. The output from the nozzle with a strong jet, the air inflates the bag and intensively washes away the bulk material from it. All material, saturated with air, falls on the bottom. In chamber 1, an overpressure is quickly created, by means of which the material is transported through the material line to the place of consumption. After the material is removed from the chamber, the compressed air supply to the fittings 12 and 22 is stopped and the command is given to the actuators 20 and 8. Under the action of the actuator 20, the pipe 16 together with the empty bag begins to turn toward the hatch 6, the lid 7 of which begins to open due to the actuator 8. By the time the pipe 16 stops opposite the hatch 6, compressed air is briefly supplied to the nozzle 17, under the action of which the empty bag is thrown into the hopper 3. After that, the cover 7 is closed by the actuator 8 and the pipe 16 is returned to its original position by the actuator 20.

To improve material transportation, as well as to create a constant vacuum in chamber 1 in order to remove dust when the doors are open, an additional nozzle 23 for supplying compressed air, operating on the principle of ejection, can be inserted into the material pipe.

Claims (1)

1. USSR author's certificate number 418388, cl. B 65B 69/00, 1972. fpuij