DE7246535U - TOP-UP FILTER FOR SMALL AIR VOLUMES - Google Patents

Description

applies from f

Applicant: 67 Ludwigshafen / Bh., December 15, 1972

Stanislav Herman GM 1805 II / wüs

6707 Schifferstadt / Pfalz Amselweg 13 1/2 -15

"Representative:

Patent attorneys

Dipl.-Ing. Adolf H. Fischer Oipl.-Ing. Wolf-Dieter Fischer 67 Ludwigshafen am Rhein Richard-Wagner-Strasse 22

Bunker top filter.r · for small amounts of air

The invention relates to a bunker top filter for small amounts of air in a closed housing arranged pocket filters, consisting of filter frames covered with filter pockets, the housing Has supply and exhaust air ducts.

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There are, for example, such bunker top filters "known, in which the filter cloth in a housing Zig-zag - b'orm from one side of the case to the other and back again, these constructions are constructed so that a cleaning of the filter can only be achieved very unfavorably, with the structural effort for the arrangement of the filter elements and their sealing in the housing is significant.

Such attachment filters are also known as hose filters, in which a number of filter bags are arranged in a housing side by side and through the Dust air is passed through the hoses from below and can flow out as incoming air. These hoses are clamped between an upper and lower housing base. The cleaning of these filter bags can only be accomplished with difficulty, using Eüttelvorrichtungen used, with which, however, only an unsatisfactory result can be achieved.

The invention is based on the problem of such bunker top filters to improve to the effect that a cheap cleaning with a low structural effort is achieved by inflating it into a tubular shape.

This object is achieved according to the invention in that the pocket filters lie parallel to one another with their Outlet openings, sealed to the housing, on an exhaust box are connected and a fan is arranged on the exhaust box.

There are dust cutters with pocket filters. known in star arrangement, be-i. which an advantageous Cleaning with purge air is possible, in which the filter bags are inflated in the form of a hose and the dust gas flows from the outside through the filter surfaces to the inside into the filter pockets and the cleaned gas again to the center of the filter bag assembly through the clean air ducts at the same time down to the To improve the degree of separation of the filter, and to prevent deposits of the separated dust in the filter.

In the invention, this basic principle is also special for a bunker top filter for small amounts of air advantageous structural design of the filter has been achieved.

Another advantageous embodiment of the invention is that the housing is rectangular or round is formed and the pocket filters are held by struts.

• It is advantageous to proceed in such a way that a U-shaped frame is placed on the "outlet opening of the pocket filter" Seal is attached and the cloth of the filter bag is passed outside over the seal inward into the opening.

The invention is explained in the following description using an exemplary embodiment in conjunction with the drawings explained in more detail.

7246 S3 5 22.3.73

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Eb show

Figure 1 shows a vertical section through such a Filter,

Figure 2 shows a cross section along the line A-A in Figure 1,

Figure 5 shows the detail B in Figure 1 in an enlarged view and

Figure 4 is a front view of Figure 5

In the embodiment shown in Figures 1 and 2, a rectangular housing 1 is provided, which is closed at the top with a cover 2. The connection opening 3 is located at the bottom of the housing for the dusty air, the filter with its connecting flange 4 being placed on the bunker. In the housing 1 a number of pocket filters 5 are arranged, the lie parallel to each other and each consist in a known manner of a frame 6 with a filter cloth is covered. These pocket filters 5 are attached to one side wall 7 of the housing 1 and are held in the interior of the housing 1 by struts 8.

The pocket filters 5 have outlet openings 9 and are framed by a frame 10 delimiting the opening 9. A U-shaped seal 11 is placed on this frame 10, which is shown in Figure 5 and indicated by dashed lines, the filter cloth 12 of the filter pocket is guided outside via the seal 11 to the inside into the opening 9. This creates a secure seal

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the pocket filter 5 on the wall 7 of the housing 1 is achieved. In the wall 7 of the housing 1 there are outlet openings 13 corresponding to the number of pocket filters 5 arranged, which are covered by an exhaust box 1A-. The exhaust box 1A- is made with the help of partitions divided into individual chambers 16, the number of these chambers 16 being the number of pocket filters 5 and an outlet opening 13 of the pocket filter 5 opens into each chamber 16. The exhaust box 1A- is connected to a cylindrical part 17, in which a rotary valve 18 driven by a gear motor is arranged for cleaning the individual pocket filter is used. This rotary slide valve 18 is connected to a fan 15.

During operation, the dusty air reaches the housing 1 via the air inlet 3, with the dust adhering to the Outer surfaces of the pocket filter settles and the clean air via the outlet openings 13 and the exhaust air box 1A- is led to the outside. The cleaning of the individual pocket filters 5 takes place by reversing this airway, i.e. the pocket filters 5 in question are inflated, which - via the to the Fan 15 connected rotary valve 18 takes place, the individual pocket filters 5 being cleaned gradually, cLh., the rest Pocket filters are in normal operation.

Claims (4)

■ ■ I - 6 protection claims 1) Bunker capacity zf liter for small amounts of air with pocket filters arranged in a closed housing, "Consists of filter frames covered with filter bags, with the housing supply and Having exhaust ducts, characterized in that that the pocket filter (5) lying parallel to one another with their outlet openings (9, T?), for Housing (1) sealed, connected to an exhaust box (14) and attached to the exhaust box (14) Fan (15) arranged eats. 2) Filter according to claim 1, characterized in that the housing (1) is rectangular or round and the pocket filters (5) are held in place by struts. 5) Filter according to claim 1, characterized in that on which the outlet opening (.9) of the pocket filter (5) is formed Frame (10) attached to a U-shaped seal (11) and the cloth (12) of the filter pockets (5) on the outside via the clearing (11) inwards into the opening is led. 4) Filter according to claim 1 to 3, characterized in that the exhaust air box (14) according to the number of Pocket filter (5) is divided into chambers (16) to which a cylindrical part (17) is connected, in which a rotary valve (18) is arranged, which is connected to the fan C "15). 724853522.S.7I