DE1254441B - Dust gas filter with filter boxes arranged in rows and filled with granular filter material - Google Patents

Description

FM η ρ R ι »K'pyBLIK GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. CL:

BOId

German AI.:. 50 e - 4/01

Number: 1254441

File number: L 45473III / 50 e

Filing date: July 27, 1963

Opened on: November 16, 1967

The invention relates to a dust gas filter with one or more housing chambers and therein side by side, narrow, upright filter boxes with gas-permeable bottoms and Filling made of granular filter material, from top to bottom from the dust gas and periodically for cleaning of the filter material in the opposite direction from a flushing flow (clean gas or outside air) be flowed through, according to the main patent application, the gas-permeable bottoms of all filter boxes by means of a gas line shoe on parallel slots provided in one chamber wall connected and through these slots with a horizontally arranged outside the chamber wall Clean gas duct are connected, in which a back and forth flushing gas nozzle in a known manner Slits covered one after the other.

The object of the invention is to achieve the maximum throughput of dust gas in a dust gas filter after the main patent application to enlarge, but still the spatial dimensions, in particular to maintain the height of the filter housing as far as possible.

This object is achieved according to the invention in that in the aforementioned dust gas filter several rows of filter boxes arranged one above the other in the filter chamber in a known manner are and thereby the vertically aligned boxes of the rows by means of their gas line shoes are connected to a vertical shaft, which in turn has an associated slot in the Filter chamber is connected to the clean gas duct. This arrangement allows the installation of a larger number of lower, upright, narrow filter boxes with correspondingly smaller ones Height of limited granular filter material layer, so that the dust gas flow in a correspondingly larger Number of branch streams divided and thus the throughput is increased, without greater heights for the filter chamber housing, as the height of the filter boxes with their gas line shoes can be kept relatively small.

Although it is known, in air filter housings one above the other and side by side in rows of filter cartridges to be arranged, which can be pushed into the housing through closable lateral housing wall openings and can be pulled out and must be replaced when saturated with dust. Also at Filtering of the pocket filter design is the arrangement of several rows on top of each other from sideways flow through, made of stiff frames with stretched

Dust gas filter with arranged in rows,
with granular filter material
filled filter boxes

Addition to registration: L 43236III / 50 e—
Interpretation document 1 241 243

Applicant:

Alice Lühr, née Gerken,

Stadthagen, Pastor-Walzberg-Str. 10

Named as inventor:
Heinrich Lühr, Stadthagen

ao filter cloth bags known existing bags. In contrast, the invention is a dust gas filter with filter boxes, the loosely filled bulk layer of granular filter material is exposed to dust gas from top to bottom, this filter material is periodically flowed through in the superimposed boxes in countercurrent of flushing gas, so that it is whirled up and thereby is freed from adhering dust.
An embodiment of the invention will now be explained in more detail with reference to the drawing, namely shows

Fig. 1 is a vertical section through a filter housing chamber with the clean gas duct and the filter box arrangement according to the invention,

FIG. 2 shows a vertical longitudinal slot along the line H-II in FIG. 1.

As in the embodiment according to the main patent application, the filter system consists of one or more filter chambers, expediently arranged next to one another. The dust gas is fed to the chamber 1 in the usual way via an inlet chamber 2 with a nozzle 3 from above; however, a side feed is also possible. A vertical chamber wall la is provided with a horizontal series of vertical slots 4, which are provided with an external clean gas channel 5 in connection, is connected to a Staubgassauglüfter on the connecting piece. 6 In the clean gas channel 5, a flushing gas slot nozzle 7 moves horizontally back and forth and in the process covers the slots 4 one after the other.

709 688/92

cleaning of the filter material via the nozzle 7 and the slots 4 in countercurrent to the dust gas flow (See the dashed flow direction arrows in FIG. 1) is blown through the filter boxes 9. These stare Filter boxes 9 are open at the top; they have a narrow, upright box frame with a gas-permeable intermediate floor 16 and a filling 17 made of granular filter material. Below of the gas-permeable bottom 16, the box frame forms a gas line shoe 11 with a gas-tight, to the clean gas outflow side downward sloping bottom 12. A sieve-like can be placed on the upper edge of the box Cover 15 be put on. The filter material 17, e.g. sand, poured onto the intermediate floor 16 Diatomaceous earth or the like does not fill the box all the way to the top.

Low filter boxes 9 of the type described are now aligned to several according to the invention one above the other and arranged in horizontal rows at intervals next to one another in chamber 1, and the filter boxes lying one above the other are on the clean gas side by means of their gas line shoes 11 connected via openings 14 to a vertical shaft 25, which in turn is connected by a the slots 4 of the chamber wall la is in open connection with the clean gas channel 5.

The dust gas flows from top to bottom through the filter material 17 of all filter boxes 9 and arrives cleaned via the gas line shoes 11 and the parallel vertical shafts 25 into the clean gas duct 5, from which it is extracted by the connected fan.

To clean the dust-laden filter material 17, the blower 8 and the back and back-migrating flushing gas nozzle 7, flushing gas or flushing air one after the other the individual vertical Shafts 25 supplied, or which then through the gas line shoes II from bottom to top the granular filter material 17 flows, this filter material swirls and thereby the dust from the Grains loosens. The scavenging air laden with dust emerges from the top of the filter boxes 9 and then leaves the Dust next to the boxes sink down into a collecting funnel 18 below the filter chamber 1, from which it is taken in a known manner.

In order to promote the sinking of the dust when cleaning the filter material and also The topmost filter boxes can achieve partial separation of coarse dust from the dust gas be covered by guide hoods 26, all of which are on one side on the same frame side of all sit on the upper filter boxes, arch over the open box surface and then between each two adjacent filter boxes are directed freely downwards. As a result, the dust gas has to go to the top Filter boxes flow around the free downwardly directed edges of the guide hoods 26 in a sharp curvature. In this flow deflection, the coarse dust is separated out and sinks to the bottom. The guide hoods 26 also remove dust when the filter material is rinsed or cleaned loaded purge air deflected downwards so that the dust from this also settle downwards can. In the case of the filter boxes below the upper row, guide surfaces 27 can be provided on only one side be that also the separation of coarse dust from the dust gas and the deflection of the favor dust-laden purging air downwards. The arrangement of these guide hoods 26 and Guide surfaces 27 does not belong to the protected invention.

Claims (1)

Claim: Dust gas filter with one or more housing chambers and in them, side by side, narrow, upright filter boxes with gas-permeable bottoms and fillings made of granular filter material, which from top to bottom from the dust and periodically to the Cleaning of the filter material in the opposite direction by a flushing flow (clean gas or Outside air), whereby according to patent application L 43236 III / 50e (German Auslegeschrift 1241243) the gas-permeable bottoms of all filter boxes by means of a gas line shoe each connected to parallel slots provided in one chamber wall and through these slots with one outside of the Chamber wall horizontally arranged clean gas duct are connected in the known manner a back and forth purging gas nozzle covers the slots one after the other, thereby marked that in the filter chamber (1) several rows of filter boxes (9) arranged one above the other in a known manner are and thereby the vertically aligned boxes of the rows by means of their gas line shoes (11) are connected to a vertical shaft (25), which in turn has an associated Slot (4) in the filter chamber wall (Iß) is connected to the clean gas duct (5). Considered publications:
German utility model No. 1 849 115;
French patent specification No. 796 074. 1 sheet of drawings 709 688/92 11.67 © Bundesdruckerei Berlin