How to operate dry spray gun safely? Henan Yuli Shotcreting Machine Factory Friendly Tips, dry shotcreting machine shotcrete operations must be handled by a special person, shall not be arbitrarily replaced.
1. Preparation of sprayer before injection Add lubricating oil in place (marked with a dipstick at the filler) to ensure that the lubricating oil is clean. According to the requirements of connecting various pipelines to ensure that all pipelines open. Check the electrical equipment connected, must ensure reliable grounding. Inspect the hopper and do not mix with slender foreign objects such as iron tools, wrenches, and wire. Guide concrete mixing and control the workability of concrete (slump is controlled at 80mm-150mm).
2. Precautions for shotcrete operation Check the air pressure of the dry spray system, and do not start the machine with less than 0.5Mp. When preparing to open the air, it is necessary to contact the sprayer and slowly open the main air valve. If the nozzle is violently shaken too quickly, the sprayer will be unable to control it and it is very likely to cause an accident. Observe the changes in the system air pressure gauge and working air pressure gauge, and the system air pressure gauge value becomes smaller, indicating problems with the air compressor or damage to the pipeline; the working air pressure gauge becomes larger, indicating that the fluidity of the concrete has deteriorated or the pipeline has become clogged; The working pressure gauge has become smaller, indicating that there is no concrete in the hopper. Observe the leakage of the slurry from the nine bleeder holes below the rotor body. Severe leakage indicates that the piston is worn. Supervise the personnel who are on the move and request that the feeding speed should be even and continuous, and always maintain a certain amount of concrete storage in the hopper to form the material column seal. According to the position of the sprayed surface and the performance of the concrete, the dosage of the accelerator is appropriately adjusted.
1. Preparation of sprayer before injection Add lubricating oil in place (marked with a dipstick at the filler) to ensure that the lubricating oil is clean. According to the requirements of connecting various pipelines to ensure that all pipelines open. Check the electrical equipment connected, must ensure reliable grounding. Inspect the hopper and do not mix with slender foreign objects such as iron tools, wrenches, and wire. Guide concrete mixing and control the workability of concrete (slump is controlled at 80mm-150mm).
2. Precautions for shotcrete operation Check the air pressure of the dry spray system, and do not start the machine with less than 0.5Mp. When preparing to open the air, it is necessary to contact the sprayer and slowly open the main air valve. If the nozzle is violently shaken too quickly, the sprayer will be unable to control it and it is very likely to cause an accident. Observe the changes in the system air pressure gauge and working air pressure gauge, and the system air pressure gauge value becomes smaller, indicating problems with the air compressor or damage to the pipeline; the working air pressure gauge becomes larger, indicating that the fluidity of the concrete has deteriorated or the pipeline has become clogged; The working pressure gauge has become smaller, indicating that there is no concrete in the hopper. Observe the leakage of the slurry from the nine bleeder holes below the rotor body. Severe leakage indicates that the piston is worn. Supervise the personnel who are on the move and request that the feeding speed should be even and continuous, and always maintain a certain amount of concrete storage in the hopper to form the material column seal. According to the position of the sprayed surface and the performance of the concrete, the dosage of the accelerator is appropriately adjusted.
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