How to use dry concrete spraying machine? Henan Yuli sprayer manufacturers introduced the use of dry concrete sprayers in detail and hoped to help the operation of concrete shotcreting machines.
1. Preparation of dry concrete shotcreting machine before starting up A. Check whether the circuit joints of concrete spraying and spraying electrical control system are firm and whether there is leakage phenomenon.
B. Observe the oil mark and check whether the lubricant in the reducer is sufficient.
C. Check whether the joint fastening of the spraying machine is correct and reliable.
D, short-term operation of the spray machine, in order to master the rotation (note that the direction of operation is consistent with the direction of the arrow, but do not idle for a long time).
E. Check the clamping force exerted on the rubber plate, and use a random hand to move the nut on the rod of the clamping mechanism and compress it. Then use a wrench to tighten 2 or 3 turns until the rubber plate does not leak. How the rubber plate is clamped can be checked by one of the following two methods:
(1) Folding the feeding pipe, opening the valve of the gas circuit, when the pressure is about 0.3MPa, no pressure gas leaks out at the rubber plate;
(2) Rotate the machine about 1/2 turn when shutting down. The rotor stopped immediately and turned slightly back (due to the elasticity of the compression rubber).
2, dry concrete shotcrete sprayed concrete preparation process is completed, at this time the machine operator should first open the main valve, and then adjust the lower trachea (pressure gas to the cyclone) to about 0.05-0.1MPa air pressure ( Depends on the conveying distance). The sprayer then opens the nozzle water valve to pre-wet the surface of the rock mass. At this point, you can start the sprayer and begin spraying concrete. The working pressure during spraying is about 0.2-0.4 MPa. According to the water-cement ratio of the mixing material and the distance of the conveying distance, the pressure of the gas flowing to the cyclone is adjusted until the jetting worker considers the jet velocity to be appropriate. After the adjustment of the lower tracheal valve is confirmed, the upper tracheal valve is opened again until no more material is released at the remainder of the machine.
3, dry concrete sprayer stop spraying operation step A, stop, blow out the remaining material in the pipeline.
B. When the pipe is clean and no material is sprayed from the sprinkler, close the water valve at the sprinkler.
C. Finally close the total tracheal valve.
The mixing material can be retained in the hopper when the spraying operation is interrupted for a short period of time; for a long time or after the sneezing operation is completed, the feeding must be stopped first to allow the spraying machine to continue to run until the residual material in the hopper and the rotor cavity is exhausted. To add a little wet gravel to clean the hopper and rotor material residue spray clean.
1. Preparation of dry concrete shotcreting machine before starting up A. Check whether the circuit joints of concrete spraying and spraying electrical control system are firm and whether there is leakage phenomenon.
B. Observe the oil mark and check whether the lubricant in the reducer is sufficient.
C. Check whether the joint fastening of the spraying machine is correct and reliable.
D, short-term operation of the spray machine, in order to master the rotation (note that the direction of operation is consistent with the direction of the arrow, but do not idle for a long time).
E. Check the clamping force exerted on the rubber plate, and use a random hand to move the nut on the rod of the clamping mechanism and compress it. Then use a wrench to tighten 2 or 3 turns until the rubber plate does not leak. How the rubber plate is clamped can be checked by one of the following two methods:
(1) Folding the feeding pipe, opening the valve of the gas circuit, when the pressure is about 0.3MPa, no pressure gas leaks out at the rubber plate;
(2) Rotate the machine about 1/2 turn when shutting down. The rotor stopped immediately and turned slightly back (due to the elasticity of the compression rubber).
2, dry concrete shotcrete sprayed concrete preparation process is completed, at this time the machine operator should first open the main valve, and then adjust the lower trachea (pressure gas to the cyclone) to about 0.05-0.1MPa air pressure ( Depends on the conveying distance). The sprayer then opens the nozzle water valve to pre-wet the surface of the rock mass. At this point, you can start the sprayer and begin spraying concrete. The working pressure during spraying is about 0.2-0.4 MPa. According to the water-cement ratio of the mixing material and the distance of the conveying distance, the pressure of the gas flowing to the cyclone is adjusted until the jetting worker considers the jet velocity to be appropriate. After the adjustment of the lower tracheal valve is confirmed, the upper tracheal valve is opened again until no more material is released at the remainder of the machine.
3, dry concrete sprayer stop spraying operation step A, stop, blow out the remaining material in the pipeline.
B. When the pipe is clean and no material is sprayed from the sprinkler, close the water valve at the sprinkler.
C. Finally close the total tracheal valve.
The mixing material can be retained in the hopper when the spraying operation is interrupted for a short period of time; for a long time or after the sneezing operation is completed, the feeding must be stopped first to allow the spraying machine to continue to run until the residual material in the hopper and the rotor cavity is exhausted. To add a little wet gravel to clean the hopper and rotor material residue spray clean.
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