RU2004477C1 - Conveyer belt cleaning device - Google Patents

Abstract

Usage: in conveyor transport for sheltering places of transshipment of bulk materials. SUMMARY OF THE INVENTION: A sealed housing is located in the overload zone and has a chamber in the upper part of which a window is made. The lower part of the casing is adjacent to the conveyor belt. The cleaning organ is made in the form of a hollow drum with holes in its side walls, on which brushes are placed. Zil.

Description

The invention relates to conveyor transport.

It is known to shelter places for handling bulk materials, including a loading chute, an aspiration nozzle and a bypass containing a chamber equipped with an additional aspiration nozzle in order to reduce the entrainment of fine dust fractions-1.

A disadvantage of the known construction is the possibility of knocking out a dusty stream of air from under the shelter when the bypass is disturbed. Such disturbances are possible as a result of a change in the direction of motion of the flows when the flow rate of bulk material changes. For example, when bulk material falls, a relative overpressure develops in the trough in the lower part of the trough and underpressure due to ejection in its upper part. In this case, the bypass serves to equalize this pressure difference by means of a reverse flow of dusty air. When the amount of bulk material is supplied, there will be a fluctuation in the air flow directions in the bypass channel and the chute, and countercurrent air flows (water hammering) and dust will be driven out from under the shelter .

Also known is a device for cleaning a conveyor belt mounted under an idle branch of a conveyor, comprising drums with cleaning discs mounted on shafts. The device is enclosed by a hermetic casing 2.

A disadvantage of the device is the increased dust content of the air in the discharge zone of the conveyor belt.

The purpose of the invention is to reduce the dust content of air in the discharge zone.

The indicated goal is achieved by that. that the device for cleaning the conveyor belt, including a cleaning body with brushes and suction ducts located under an idle branch and located in an airtight casing, the airtight casing is placed in the overload zone and has a camera, a window is made in the upper part, and the lower part of the casing adjoins the receiving tape conveyor, and the cleaning body is made in the form of a hollow drum with holes in its side walls, on which brushes are placed, and the suction ducts are connected at one end to the inner cavity of the bar Abana, others - with the bottom of the shelter

In FIG. 1 shows a General view of the proposed device; in FIG. 2 is a section along AA in FIG. 1; in FIG. 3 - the appearance of the shelter.

A device for cleaning the conveyor belt is installed under the idle branch of the belt 1 in the overload zone of bulk material and contains a drum 2 with brushes 3 in the form

polymer or steel threads. Drum 2 is hollow with holes 4 in its wall. The drum 2 is installed in the housing 5, having a window 6 in the upper part of the wall from the side of the shelter 7. The device has air ducts 8 connected at one end to the inner cavity of the drum 2, the other to the lower part of the shelter 7 through the receiving windows of the duct 11. The casing 5 and the shelter 7 are sealed with rubber shutters 9. The device is equipped with a drive 10.

The device operates as follows. With the movement of the conveyor belt 1, the bulk material falls from it onto the belt of the receiving conveyor 12. Single branch

0 of the conveyor belt 1 is cleaned by brushes 3 of the drum 2, which rotates from the drive 10 in the opposite direction to the direction of motion of the idle branch of the conveyor belt. Material to be cleaned

5 are ejected by brushes into window 6.

When the bulk material is poured, dust is pelletized and bound to the poured material. Re-emitted with dust is sucked into the cavity of the drum 2 by

0 to the ducts 8 due to the rarefaction created by the rotating drum 2 and the dynamic pressure that occurs when the bulk material falls on the belt of the receiving conveyor 12 and is thrown out through the hole 4 from the cavity of the drum 2 into the window 6 through centrifugal forces arising in the mass of dusty air rotating together with the drum 2 with a stream of air together with the tape being cleaned

0 material. Dust, settled and pelletized, together with the bulk material on the belt of the receiving conveyor 12, is transported by this conveyor in the direction corresponding to the technology of a particular production, and uncoiled dust repeats the cycle of movement within the shelter 7. Moreover, part of the dust pelletized in a space limited casing 5 also settles on the conveyor belt and is transported similarly. In the proposed construction, the drum 2 serves as a cleaning organ and at the same time is an element of the fan, which creates a vacuum and pressure of the air flow.

5

In FIG. 3 shows the appearance of the shelter. Shelter isolates the place where bulk material falls from the environment and thus prevents the spread of dust beyond.

Thus, the reduction of dustiness in the air in the unloading zone of bulk material from the conveyor belt is due to the presence of air ducts connecting the shelter and the drum cavity with the holes in the wall. Air ducts provide directional air movement with fines and dust cleaned from the tape and displaced through the holes of the drum. A window in the wall of the casing is necessary to remove the material to be cleaned and to prevent the increased pressure of dusty air in the casing, which reduces the dustiness of the air outside the device.

The advantage of the proposed device compared with the prototype is to improve working conditions due to dustiness of the air. It can be used in case of material overload from one conveyor belt to another, as well as when shedding into a hopper or discharge funnel. The proposed device provides stable circulation of dusty air, regardless of the flow rate of the material being poured.

(56) Copyright certificate of the USSR No. 950925, MKI E 21 75/00. 1982.

USSR author's certificate 15 No. 882880, MKI B 65 C 45/00, 1981.

Claims (1)

The claims DEVICE FOR CLEANING THE CONVEYOR BELT, including a cleaning body with brushes located under an idle branch and housed in an airtight casing and suction ducts, characterized in that, in order to reduce dustiness in the area of loading bulk material from the conveyor belt to the FIG a removable, sealed casing is placed in the overload zone and has a chamber, a window is made in the upper part, while the lower part of the casing adjoins the conveyor belt, and the cleaning organ is made in the form of a hollow drum with holes in its side walls on which brushes are placed, and the suction ducts are connected at one end to the inner cavity of the drum, the other to the bottom of the shelter. Figure 2 YES 8