Wet and wet concrete shotcrete machine operation precautions and maintenance
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First, the wet and dry concrete shotcrete machine operating precautions To ensure the construction of the quality and speed, spraying machine operators should pay attention to the following points in the operation:
1. At the beginning of the shotcrete operation, advanced air pressure should be used to start the motor, then the water supply, and finally the feed. The end of the first should stop the material, wait for the material to stop the motor after use, and finally cut off the water source and wind source, can not be reversed operation.
2, always pay attention to changes in the pressure gauge pointer, the pressure value should be controlled at the appropriate value.
3, adjust the water valve at any time to maintain a suitable water-cement ratio, when the water-cement ratio is appropriate, the new spray layer surface is smooth, moist luster, good compactness, rebound, no dry spots or slip phenomenon. If the spray surface has dry spots like bean dregs, large rebound, and more dust, indicating that the water is less; if the surface of the spray layer slips and flows, then the water is large, should be promptly in addition to supplement spray.
4. In case of sudden stoppage of wind, water stoppage, and power outage during construction, it is necessary to clean up the mixture in the spraying machine and the feeding pipe in time.
5, appropriate control of the loading capacity, the normal operation, the hopper should ensure that a sufficient amount of stock, such as the material should be continuous and uniform, in order to prevent the occurrence of wind, blocking the pipeline and injection uneven, discontinuous phenomenon.
6. If the conveyor arm is blocked and processed, it must stop and stop. It is forbidden to face the feeding pipe to the person or face the feeding pipe to handle the failure.
7. In the spraying operation, if there is a blockage or a sudden stoppage or power failure, immediately close the water valve and place the spray head downwards to prevent water from flowing into the feed pipe.
8, before the operation to open the nozzle inspection, after the end, should be promptly washed with water, so that water eyes, water ring clean and smooth. Sprinklers and pipe joints are tightly connected with no leakage and no water leakage.
Second, wet and dry concrete mortar spraying machine maintenance 1, to ensure the normal operation of the spraying machine, the machine should always pay attention to the temperature of the motor and reducer, mechanical operation and sound.
2. Always pay attention to the abrasion situation of the spray pipe. If it is found that the wear is serious, it should be replaced in time to prevent accidents when the spray pipe breaks when spraying.
3. For each spray of 300m3, it is necessary to perform a comprehensive maintenance on the sprayer. These include:
1) Check the use of reducer and motor.
2) Replace the oil in the reducer in time and add grease to the rotating part of the bearing.
3) Clean the upper and lower tank walls and the upper and lower bell valves (upper and lower swing valves).