SU1744269A1 - Dust control device for loading tanks - Google Patents

Abstract

Usage: in the mining industry for efficient dedusting of air when loading containers of various sizes The essence of the invention: a device containing an exhaust pipe placed inside an elastic casing and a winch with a cable is supplied with a source of compressed air and the elastic casing is fitted with a sealer for bead edges loadable container in the form of a sectional elastic pneumatic membrane, sections of which are interconnected by pneumatic valves. The specified sealer communicated with a source of compressed air, a rigid frame connected to the winch cable. 2 Il.

Description

FIELD OF THE INVENTION The invention relates to the mining industry and can be used for dusting bunkers.

A device for dedusting bunkers is known using an air curtain with a uniform hopper.

The drawback of the device is the lack of dust control means when unloading the bunker.

The closest to what is described is a device for reducing dust emission when loading bulk materials from bunkers into cars or cars, which operates according to the principle of sheltering and dry suction of dusty air. A telescopic tube is attached to the neck of the bunker, which is enclosed in a folded casing. at the bottom of the car or body as it is filled, the end of the pipe is raised up with a winch. From the folded hood, air is drawn off by an exhaust fan.

A disadvantage of the known device is the low dust collection efficiency due to the lack of sealing of the gap between the lower end of the pipe and the load capacity.

The aim of the invention is to increase the efficiency of the device when loading containers of various sizes

This goal is achieved by the fact that the device is supplied with a source of compressed air, and the lower part of the elastic casing is equipped with a rigid frame with a pressurized bead sealer around the sides of the loadable container, made in the form of a sectional elastic sheath, the sections of which are interconnected by pneumatic valves, while the canister seals load capacity of the message &

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a compressed air source, and a rigid frame is connected to the winch cable.

Fig, 1 shows a diagram of the device, a general view; in fig. 2 - rigid frame of the electric housing with a sealer.

The device includes a bunker case 1 with a bulk material 2 and an exhaust pipe 3 placed inside the elastic case 4, the cavity of which is in communication with an exhaust fan 5, and the lower part of the elastic case 6 is provided with a rigid frame 7 with a sealer 8 bead edges loaded along its perimeter. containers 9, made in the form of a sectional elastic pneumatic membrane, sections of which are interconnected by pneumatic valves 10, while the sealer 8 edges of the sides of the loaded container 9 is in communication with a source of compressed air 11 and air th crane 12, and the rigid frame 7 is connected to the winch cable 13.

The device works as follows.

Before being fed for loading by an auto-dumper 1Ј, the rigid frame 7 is in position. The auto dump truck 14 for loading is installed in such a way that the axis of the exhaust pipe 3 of the tunnel through the center of the dump truck body. After this, the rigid frame 7 of the elastic casing 4 under its own weight, with a loosening of the cable of the winch 13, goes down and takes the position AND (see Fig. 1). Then, a source of compressed air 11 supplies air to the sealer 8. When stretched, the elastic pneumatic membrane is pressed tightly against the edges of the sides of the tank 9 being loaded. The components of the sealer depend on the size of the gap between the rigid frame and the load capacity. The volume of air supplied from the pneumatic enclosure determines the number of sections involved in sealing. After the gap between the rigid frame 7 and the load container 9 is completely sealed. In this case, the body of the dump truck 14, the air supply to the sealer 8 is stopped. Thereafter, the bulk material 2 is fed from the hopper 1 through the discharge pipe into the loading tank 9. The dust 15 formed with the exhaust fan 5 is sucked into the hopper 1 case.

Unloading is stopped after the elapsed time calculated for a given volume of loading capacity 9. After the end of loading, open the air

valve 12. In this case, the sealer 7 is blown off, the air valve is closed. After that, with the help of a winch cable 13, the rigid frame 7 rises up to reach position I. After completely removing the dust 15 from

elastic casing 4 aspiration is terminated. Loading dump truck 14 is completed. The elastic casing 4 is made of a dust-proof material (for example, dense polyethylene, rubberized

fabrics, etc.). As an exhaust fan 5 and a source of compressed air 9, centrifugal fans of the type C6-24 can be used for air intake, C4-70 for air injection or other

air flow boosters, such as compressed air cylinders. The rigid frame 7 can be of various shapes: rectangular, round, etc. Its shape should correspond to the shape of the neck of the loaded

capacity.

The proposed device, unlike the known ones, is simple and sufficiently reliable. Using the device when unloading bulk materials from a bunker to dump trucks and other containers of various sizes allows to significantly reduce dust emissions into the atmosphere, as well as to dispose of dust, returning it to the bunker by aspiration.

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Claims (1)

DETAILED DESCRIPTION OF THE INVENTION A device for dedusting when loading containers from a hopper, comprising a hopper body with an exhaust pipe placed inside an elastic casing, the cavity of which is in communication with an exhaust fan, and a winch with a cable, different from the fact that in order to increase the efficiency of the device when loading containers of various sizes, it is supplied with a source of compressed air, and the lower part of the elastic casing is equipped with a rigid frame with a sealing on the edges of the sides of the board loaded along its perimeter containers, made in the form of a sectional elastic pneumatic membrane, sections of which are interconnected by pneumatic valves, while the sealing of the edges of the sides of the loaded container is communicated with a source of compressed air, and the rigid frame is connected to the winch cable.