SU401611A1 - UNLOADER-FILTER - Google Patents

Description

one

This invention relates to the field of pneumatic transport of bulk materials.

Discharger-filters are known, including a hopper for collecting the precipitated material, equipped with a device for dispensing it out. A hermetic case is installed in the upper part of the bunker, equipped with bag filters and a device for their cleaning, made in the form of a vibrator or a shaking mechanism, acting simultaneously with the backward blowing of the filter.

However, this device does not provide complete cleaning of the filter during transportation of poorly flowing materials.

As a result, the normal operation of the pneumotransport unit is disrupted and the batch dispensing of the material from the filter discharger is difficult.

The aim of the invention is to increase the reliability of the discharger filter during transportation of poorly flowing materials.

To do this, tubes made of an elastic material, such as rubber, and connected by upper ends to a compressed air collector, are connected to the upper case cover in the space between the bag filters.

FIG. 1 shows a longitudinal section of the proposed filter discharger; on

FIG. 2 is a section along the line A-A in FIG. one; in fig. 3- elastic tube mounting unit.

The relief filter consists of a storage bin 1, bag filters 2, opened from the bottom and enclosed in a sealed enclosure 3, devices for shaking material from the walls of bag filters, and a bunker made in the form of tubes 4 which hang freely along these walls

material, such as rubber, connected to the compressed air manifold 5. The tubes are placed on the outside of the filters.

The lower part of the bunker 6 at the discharge port has an aerodevice that improves the discharge of material to the outside, to which a pipe for supplying compressed air is connected.

In case 3, a pipe 7 is installed, to the upper part of which a pipe 8 of the material pipeline is attached, and the bottom is made open.

To the top of the housing cover 3 is attached a nozzle for exhausting air. To ensure the periodic disconnection of the hoses

filters from the suction device at the time of their cleaning during the operation of the filter discharger in continuous installations; the body 3 is divided by a partition 9 into two chambers. For batch delivery of the material, the discharge opening of the hopper 1 is provided with a shutter 10. The material through the nozzle 8 and the pipe 7 enters with the transporting air into the bunker, where it is deposited in its lower part, on the walls of the hopper and bag filters.

Before unloading the material from the filter discharge, compressed air at a pressure of 3 to 4 atm is blown through rubber tubes for 5-7 seconds through the reactive action of air jets to vibrate intensely, impacting the walls of the bag filters. At the same time, the specified filters will be cleaned due to the material being struck during the impact of the tubes. The air entering the tubes will simultaneously blow back the bag filters. During batch unloading from the unloading filter, the materials are aerated and discharged through the gate 10. With the continuous output of the material, the chambers of the housing 3, separated by a partition 9, are alternately disconnected from the suction device.

Subject invention

Discharge filter for pneumatic conveying installations, containing a storage bin, in the lower part of which an aeration device and shutter are installed, a hermetic cylindrical case located above the bunker, inside which are mounted downwardly open bag filters, and on the top cover are mounted nozzles for material supply, air suction and compressed air collector for cleaning bag filters, characterized in that, in order to increase the reliability of the filter discharger during the transportation of poorly flowing materials, tubes made of an elastic material, such as rubber, and connected by upper ends to a compressed air collector, are suspended from the upper case cover in the space between the bag filters.