DE1803583A1 - Sealing device for grate trolley - Google Patents

Description

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Issued: October 16, 1968

5426 ) Frankfurt / Main, June 25, 1968

-Schr / MBo.-IiETAIIiGESIILS CHAFiD

Public company 1803583

Frankfurt / Main

Diohtung device for grate trolleys

The invention relates to a sealing device on grate trolleys of Brennmasohinen, in which the grate car over Wind boxes are guided, consisting of below the side parts of the grate car in the running direction of the grate car fixed sliding seals, which are opened by means of spring pressure sole moldings attached to the wind boxes or wind box girders be pressed.

In the case of traveling grates for the thermal treatment of solid materials - such as sintering masohines or pellet burning machines - the grate carriages that are guided over the wind boxes must be sealed on both long sides opposite the wind boxes in order to prevent gases from escaping or penetrating between the grate wagon and wind boxes. On the one hand, this seal should be as effective as possible, but on the other hand it should be cheap, wear-resistant, not prone to failure and easily replaceable. However, these conditions are difficult to reconcile with one another under the harsh operating conditions of traveling grids.

There are various sealing devices for grate trolleys

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known (DßP 422 512, 581 575, 584 937, 676 137; DAS 1 149 172, 1 198 563; DGBM 1 815 196; USP 2 853 289, 3,094,577; 3,131,050; BP 875 895), in which the sliding diameters are pressed against the grinding surfaces by their own weight, leverage or spring pressure. Basically a distinction can be made between relatively wide and narrow seals. The wide seals have a good one Sealing effect, but must be lubricated. This creates additional costs. It is also used in the lubricant easily incorporated dust, which partially negates the effect of the lubricant. Continues to penetrate the lubricant often gets into the wind boxes and guides of the sliding seal, where it starts to form and leads to cross-sectional constrictions or jamming »The narrow seals generally do without lubrication and consciously accept the greater sliding resistance. You have accordingly a higher Versdaleiss and a poorer sealing effect.

The invention is based on the object of creating a sealing device for grate trolleys which, on the one hand, do not have any Requires lubrication, but on the other hand has the best possible sealing effect.

This object is achieved according to the invention in that the Bottom of the sliding seals with at least two

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There is spacing from one another and sealing strips arranged parallel to one another.

The auaohselbarkeit the sealing strips can thereby can be facilitated that they are attached to a horizontal center plate by means of bolts, bayonet mountings, etc., preferably countersunk screws, are releasably attached. The middle plate is over the spring device with the side panels the grate wagon connected. The mobility of the middle plate in the vertical direction is ensured by bolts, flange edges or limit stops, the mobility being controlled so that the fastenings of the sealing strips are accessible on the center plate when the sealing device is not seated on the sliding seals.

A preferred embodiment of the invention is that at least the front in the running direction of the grate carriage located vertical end faces of the sealing strips

I be pointed or almost pointed.

This configuration has the advantage that on the slide rails lying material particles are pushed to the side and thus wear and tear on the sealing strips is decreased.

Another preferred embodiment is that

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the entire sealing device in a space that is closed on all sides with the exception of the underside in or below the side parts of the grate carriage is arranged. The sealing strips and middle plates are made with the least possible Game, preferably ^ 2 m to the long sides and preferably <11 mm, led to the transverse sides of this room. This configuration has the advantage that a good seal against the entry of dust into the sealing device is achieved.

The device according to the invention is closer and for example described with reference to FIGS. 1 to 4.

Fig.1 shows a partial vertical cross-section a grate wagon.

Fig.2 shows a vertical cross section through a Sealing device.

3 shows part of the sealing device in cross section. The cut is made through a point on the sealing strips at which the grate carriage runs in the direction of travel upstream vertical end faces of the sealing strips are already almost pointed.

4 shows a longitudinal section through a sealing device represent.

The grate carriage consists of the load-bearing walls 1 with the

009822/0 9 4 5

m Humpln ■ ■ ti ι

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Stiffening ribs 2 and the outer walls 3, the grate bars 4, the side walls 5, the retaining strips 6 for the grate bars 4, axles 7 _} attached to the outer walls 3 on which lifting rollers 8 and running wheels 9 are attached. The rollers 9 transmit the weight of the grate carriages to the running rails 10, over which the grate carriages are moved. Boxes 11 are attached to the underside of the outer walls 3 and are closed on all sides with the exception of the underside. The sealing devices 12 are arranged in these boxes. The boxes 11 are fastened to the outer walls 3 by means of screws 13.

The sealing devices 12 each consist of two spaced apart Sealing strips 14 which are arranged parallel to one another and which are arranged on a horizontal central plate 15 by means of countersunk screws 16 are releasably attached. The sealing strips 14 are over the middle plate 15 and the screws 16 pressed onto the slide rails 18 by springs 17. The slide rails 18 are attached to the wind box supports 19. The travel of the sealing strips 14 and the middle plate 15 in the boxes 11 is limited by bolts 20, which are fastened to the middle plate 15 and which protrude into recesses 21 in the outer walls 3.

The advantages of the invention consist mainly in the following points:

No lubrication of the sealing device is required

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and nevertheless a very good sealing effect is achieved with a construction which is able to withstand the harsh operating conditions is very well adapted. The wear is reduced, so that the required replacement times are increased will. The exchange is very simple and can be done without removing the grate trolley.

- Claims 009822/0945

Claims (3)

H hi If PATENT CLAIMS 1.) Sealing device on grate trolleys of burning machines, in which the grate trolleys are guided over wind boxes, consisting of below the outer walls of the grate trolleys sliding seals fixed in the direction of movement of the grate carriage, which are pressed by means of spring pressure onto contact strips attached to the wind boxes or wind box supports, * characterized in that the underside of the sliding seals consists of at least two spaced apart and sealing strips arranged in parallel next to one another. 2.) Sealing device according to claim 1, characterized in that at least in the running direction of the grate carriage upstream vertical end faces of the sealing strips are pointed or almost pointed are. 3.) Sealing device according to claims 1 and 2, characterized in that the sealing device in a space that is closed on all sides with the exception of the underside in or under the side parts of the Grate carriage is arranged. 009822/0945 I ^σ · ι. Blank page