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Operation flow of shotcrete machine

Release time:

2022-10-23 22:29

Source:

Saner Heavy Industry

Shotcrete machine is a kind of shotcrete support equipment, which is used in engineering construction, mines, tunnels, culverts, subways, hydropower, underground engineering, mines, mines, mines and other fields. All kinds of industrial kilns, melt spraying or repair of lining; in slope protection and greening, by conveying and spraying soil.

There are strict operating procedures before starting, slurry preparation, injection and shutdown. Shotcrete workers should undergo special training and obtain corresponding certification.

1. operating procedures

1. Before starting, the connection and tightening of each part of the glue spraying machine must be checked. Start the motor and check the direction of rotation. Check the pressure of the rubber sheet, first tighten the nut on the pressure rod by hand until it is completely closed, and then tighten it 2-3 times with a wrench until the rubber sheet has no air leakage. Open the air duct valve, the pressure of the bending and unloading conveying pipe is about 0.5 Mpa, and there is no air pressure leakage, indicating that its tightness is just right.

2. The spray gun is holding the spray gun and facing the wall. The interval between the muzzle and the nozzle is 0.8-1.2 meters, and the concrete is ready to be sprayed.

3. Before operation, the main valve should be opened first, the upper wind valve should be opened 1/3 times, and then the lower air duct should be adjusted to 0.6-1 MPa.

4. The sprayer opens the nozzle and cleans the nozzle.

5, start the sprayer, by the feeder to the hopper into the material, during the feeding period, to maintain the continuous uniformity of the material, followed by spraying.

6. In the injection process, it should be leveled first, then uniform initial injection, and then secondary injection to meet the design requirements.

7. When spraying into concrete, the nozzle and the nozzle shall be as vertical as possible, and the pressure shall be reduced in a spiral shape, so that the diameter of the nozzle is 200~300mm, and the width of the nozzle is 1~1.5 m.

8. When the spray gun sprays concrete, the assistant should provide auxiliary lighting and communication signals 5 meters away.

9. Stop feeding after stopping spraying. Stop spraying first. When the residual materials in the spraying pipe are blown out and no materials are sprayed out, the water valve can be closed and the main valve can be closed.

2. shotcrete machine shutdown operation essentials

1. After shutdown, turn the spray gun upside down to prevent the nozzle from flowing into the infusion pipeline.

2. After shutdown, clean the air pipe and water pipe tray, clean the shotcrete machine and its surroundings, and rebound.

3. If the spray gun gets stuck or stops the wind, stop immediately and turn the gun head upside down.

4. When dealing with pipe blockage, do not stand in front of the muzzle to avoid sudden water spray or pipe beating injury.

5, wipe the film every shift, and regularly check whether there is wear.

6. The lining should be carried out once a week. If there is any sign of scoring, it should be polished again.

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