DE2940074A1 - Mine air conditioning filter system - has duct assembly behind ventilator pressing air back by throttling - Google Patents

Abstract

The filter is used for removing dust from large volumes of air in underground mines. The air is sucked in from a long working face of a forward driving area. Use is made of a duct assembly bringing back quantities of air, behind the ventilator. The desired volume of air is pressed back into the area concerned, by more or less throttling. The area is in the form of a duct assembly, pref. of the perforated sheet metal sheath type, sheathing part of the filter. This guarantees safe ventilation in the area of the filtering and ventilating assembly, where gases may emerge.

Description

Description and explanation of the patent application

'' Mining filter with partially recirculated ventilation for longwall and / or Face-to-face transition dedusting '.

In the mining industry, quantities of weather from the area are used to dedust the mine Longwall filters are often placed behind the face wall.

The amounts of weather that are sucked off require a filter of z. B. 15 m length.

In the area of the filter from the intake port to the outlet of the fan ventilation is therefore not guaranteed.

Here gases could escape from the adjacent mountains and a Mean danger.

About this ventilation in the area of the entire filter and fan unit to guarantee, it is proposed according to the invention, a device accordingly to choose from the accompanying drawing.

The attached drawing shows: Fig. A with 1 the longwall with 2 the direction of the weather, laden with dust, from 3 z. B. the extraction machine with z. B. 800 m Air / min. sucked or pressed to the grinder outlet will; with 3 the tunneling machine, z. B. a partial cut 3 machine with 400 m air per minute is ventilated and thus also accordingly with a filter arrangement should be provided; 3 with 4 of the filter, e.g. B. designed for the 800 m 3 amount of weather from the face and the 400 m amount of weather from the tunneling machine 3, together thus about 1,200 m3 / min .; with 5 the fan with 6 the partial weather quantity return according to the invention, which can be seen in Fig. B is arranged so that the filter 4 with partial lateral surfaces is provided in the area to the hanging wall and / or to the opposite joint weather volume return channels 7, which is connected to a line behind the fan at point 6 and thus the desired partial return of the weather volume via throttling in the area of the entire filter unit.

Of course, the invention is not limited to the above in detail The forms of training described are limited, but there are numerous changes possible, without deviating from the basic idea, a mining filter for the suction of Strebwettermenqen and / or weather amounts from the Design the propulsion so that a partial weather distributor is attached behind the fan is the z. B. pushes the desired amount of weather back into area 7 via throttle valves, this channel arrangement 7 preferably designed as a perforated sheet metal casing arrangement so that a uniform diffuse outlet ventilation in the area of the filter is achieved.

Claim: Blank page

Claims (1)

Claim: Claim I Mining filter for the suction of face weather quantities and / or weather quantities from the propulsion area, characterized in that behind the fan 5, a weather quantity return channel arrangement 6 is attached, which through more or less throttling pushes the desired amount of weather back into area 7, this area 7 as a channel arrangement, preferably as a perforated sheet metal jacket channel arrangement formed, encased a portion of the filter.