DE7625516U1 - DOSING CONTAINER FOR A DEVICE FOR SPRAYING MOERTEL - Google Patents

Description

The invention relates to a metering container for a device for spraying mortar, which is between two pneumatic Transports for the mortar can be connected. The dosing container is primarily for an application device determined by spray mortar in underground mining on tunnel walls.

The invention is intended to enable the rationalization and dust-free handling of sprayed concrete in underground mining will. As is well known, the spatial conditions are extremely small here, which means that the shotcrete machine is fed become a problem.

To this day, the sprayed mortar and shotcrete machines are fed with screws or similar units; the dry

BANK: DRESDNER BANK, HAMBU FÄA0304i8iBLZ2M800 00) POSTSC

762551 g 07/27/78

80000) POST CHECK: HAMBURQ 147807-200 TELEQRAM: 3PECHTZIES

lit · · · t

Mortar is delivered in sacks. As a result, heavy manual work must be done and by the tearing of the sacks creates a strong dust nuisance »Furthermore, the sacking of the dry mortar more expensive and many bags are damaged on the very long transport routes from surface to underground.

The invention enables the automatic supply of the dry mortar by pneumatic means and sees one for this Dosing container, which can be connected between two pneumatic transports for the mortar and which is thereby marked is drawn that a metering lock is arranged in the metering tank.

This metering sluice makes it possible to

1 ^ and add water to the dry mortar, so that at the end of the pneumatic pressure transport, the wet mortar is sprayed onto the wall from a spray gun can.

Embodiments of the invention are based on the Drawings explained. |

Fig. 1 shows schematically a with an invention f Suction / pressure ■ provided in accordance with the dosing tank

Mortar spray vox seal with continuous Loading and simultaneous processing j

- 2 - j

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of the spray mortar in the pressure system,

Fig. 2 shows a modification of the device according to Fig. 1 with a larger metering container,

Fig. 3 shows a further embodiment of the device according to FIG. 1, in which the first pneumatic transport by means of compressed air works and starts from an intermediate container.

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Flg. 4 a further variant according to the embodiment according to FIG. 1, in which after the dosing container a rotary valve and then a corner transport and a Nassinischaniage vcr your pneumatic pressure transport is arranged.

In Fig. 1 a rock 1 is shown, with one in this protruding tunnel 2, an arrangement as can be found in underground mining. To Beden of the tunnel 2 are, for example on Schiener., Trolley 4 can be seen from which Trockcnniörtei 7 by means of a suction nozzle 6 er.tno-üren and via a Suction line 9 is fed to an end pipe 11. From space and other reasons, these trolleys 4 are filled with dry mortar 7 during the day and then attached to the The position shown in Fig. 1 has been moved from which it is by means of the explained pneumatic suction transport be emptied.

At the end of the tube 11 there is an outlet opening 13 in its jacket, under which a cone 15 can be also be a baffle plate} is arranged, usi the other

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to distribute the coming dry mortar. The end pipe 11 is closed at its free end, so that the incoming dry mortar mixture impinges on this end and falls out of the outlet opening 13 at a very low speed. The end pipe 11 is located in its unloading part in a storage container 17 with a conical lower part 16. In its upper part there is a dust filter 19, by means of Ue ₁ T _1, the freer transport air is freed from smaller particles, in order to subsequently flow into an exhaust air line 20 which leads to a fan 22. The pneumatic transport, which begins at the suction nozzle 6, therefore operates as a suction transport, the separation of the conveyed material, ie the drying room from the conveying air in the storage container IV and the dust filter 19. Dry mortar collects in the cone 18 of the container 17 and is dosed critnoirjnen by a dry mortar rotor housing 24. The rotor lock 24 is driven by a compressed air motor 27 via a gear 26. The whole group rests on a substructure 29. After the sluice , a dry mortar delivery line 27 can be seen, at the end of which there is a spray gun 33, in which the drying agent is added to the liquid by adding water.

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becomes mortar gamish. The pneumatic pressure transport through the line 31 and through the spray gun 33 takes place by compressed air from a compressed air generator, softer, as indicated in the drawing, the compressed air into the top Lock 24 feeds so that in the rhythm of the rotation the lock 24 always the corresponding, filled with mortar Chamber expelled by the compressed air and brought the dry mortar directly into the conveying line 31 will.

The system according to FIG. 2 is basically based on your same principle as that according to FIG. 1. However, a larger storage container 41 is provided, which is why the end pipe 40 is also designed to be correspondingly longer. This end pipe 40 is with three in a row lying, lateral outlet openings 42 provided, under which corresponding distributors 44 are located, around the anfaller.de dry mortar mixture on the flat bottom part of the container 41 via the rotor sluice To lead, a screw conveyor 46 is also provided. Otherwise, this system works the same as the one according to Fig. 1.

In Fig. 3 that case is shown / in which the

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It is possible, for example, to empty the dry mortar from transport trolleys, such as the trolleys A, into a funnel 50, under which an intermediate container 52 is provided. Here now the dry mortar is fed through a pressure line 55 into the storage container 17 by means of compressed air generated by a motor 53 and a compressor, whereby after cleaning by means of a dust filter 19 the compressed air of the pneumatic transport is blown into the tunnel 2 via an exhaust nozzle 57.

4 shows a system in which the transfer of the dry mortar to wet mortar does not take place in the spray gun 33 by supplying water, but the sprayable mortar itself is supplied to the second pneumatic pressure transport. For this purpose, a rotary valve 60 is located under the cone 18 of the storage container 17, which prevents inappropriate amounts of air from entering the storage container 17, whirling up and separating the dry mortar and clogging the dust filter IS. Through the rotary valve 60, dry mortar passes in a metered manner into a screw conveyor 62, from which the mortar

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falls into a silo 64, the output of which is controlled, with the dry mortar going into a mixer 66, where he with water from a feed pipe 67 to a sprayable Mix the mortar and then press it through with compressed air the delivery line 31 reaches the spray gun 33.

Systems of this type have the great advantage that work can be carried out practically dust-free from the point of discharge, at which the dry mortar has to be poured out of sacks, to the point of spraying. With the new concept it is sen: possible to store dry mortar in silos during the day and bring it to underground tunnels zxx by means of a mine car.

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Claims (3)

> · · J j 1 I ill ι:, ■ Spribag AG New claims for protection 1. Dosing container for a device for spraying of mortar that can be connected between two pneumatic transports for the mortar, characterized in that that a metering lock (24, 60) is arranged in the metering container (17, 41). 2. Dosing container according to claim 1, characterized in that in the dosing container at the junction point of the one pneumatic transport a baffle tube (11, 40) with a closed end and one or more, in the tube jacket arranged outlet openings (13, 42) is arranged. 3. Dosing container according to claim 1 or 2, characterized ge _e c indicates that at the output of the dosing device device (60) a screw conveyor is arranged, which is in a ο Silo flows out. " Z / .ü /./ ö