How to operate PZ-5 concrete spraying machine safely? Henan Hao Li sprayer manufacturers today focus on the PZ-5 concrete spraying machine operation guide, and hope to help everyone operate the spraying machine.
1. Preparation 1 Check whether the installation of bolts meets the design requirements and find problems in time.
2 Clean up debris from the blast site, and install the PZ-5 concrete shotcreting machine in a stable and safe place on the top wall surrounding the rock. The distance from the track can not be less than 0.5m. Connect the wind and water pipelines. The feeding pipeline shall be straight and shall not have sharp bends. The joints shall be tight and no leakage of air shall be allowed. It is forbidden to use non-static antistatic plastic tubes as conveying tubes.
3 Check whether the spraying machine is in good condition, and put the electricity into no-load test run, fasten the friction plate tightly, and no air leakage phenomenon shall occur.
4 Before blasting, the rock face must be washed with high-pressure feng shui. Thickness marks should be placed on the vault and the two gangs of the roadway.
5 Spraying personnel should wear complete and effective labor insurance products.
2. Mixing material 1 Use sieves and buckets to check whether the coarse and fine aggregate ratio meets the requirements.
2 Check whether the moisture content of the aggregate is qualified.
3 According to the design ratio, put the cement and aggregate into the mixer, and the feeding should be uniform. Cement: Sand: gravel, concrete with a weight ratio cement: sand: stone = 1:2:2, artificial mixes use tidal mix, cement, sand and stones should be cleaned and mixed three times to make it evenly mixed.
4 Check the moisture content of the blended tidal materials and require that they be held by hand. Release the hands like non-dispersed powder and smoke without smoke.
The 5-speed coagulant is added uniformly at the feeding port of the spraying machine according to 2.5-4% of the cement content.
3. Before the spraying work begins, the old belt should be laid on the spraying site so as to collect the rebound material. The rebound rate should not exceed 10%.
1 open water, open air, adjust the amount of water, keep the wind pressure not less than 0.4MPa, the water pressure should be about 0.1MPa higher than the wind pressure, the amount of water is controlled by the shooter's experience, water-cement ratio 0.4.
2 The sprayer operates the sprinkler and flushes the rock face from top to bottom.
The 3PZ-5 type concrete shotcreting machine was used to deliver electricity, and a shotcreting machine was used to spray the slurry.
4 According to the feeding situation, adjust the amount of feng shui again to ensure that there is no dry spot on the spray surface, no runny, strong adhesion and less rebound material.
5 The sprayer sprays in sections in the order from the bottom to the top wall.
6 The sprayer should be sprayed as far as possible perpendicular to the spray surface. The included angle should not be less than 70 degrees.
7 When spraying, the trajectory of the nozzle should be spiral, according to the diameter of 200-300mm, a circle presses the semi-circular method to move evenly and slowly.
8 The concrete shotcreting machine sprays concrete at a thickness of 50-70mm, and must be re-injected in time. The interval between sprayings shall not exceed 2 hours. Otherwise, use high pressure water to re-flush the sprayed surface.
9 should be equipped with two people, one person holding a spray nozzle, one person assisted lighting and responsible for contact, observe the top of the security and jet quality.
4. Sprayer shutdown operation 1 After the spraying is completed, the sequence of operations shall be as follows: first stopping the material, stopping the water, and then shutting off the power and finally closing the wind.
2 After the spraying work is completed, remove the spray head, clean the water ring and the mortar or material inside and outside the sprayer, and wind up the wind water pipe.
3 Clean up and collect the rebound materials, and use clean materials in the shift.
4 Sprinkling concrete began to sprinkle after 2 hours of curing, and core strength was measured after 28 days.
5, spray quality must be cleaned before spraying the rock to help clean up the floating raft, dig out the wall foundation, pull the line, spray evenly, no cracks, no "wear skirt, barefoot."
6. Precautions 1 In the case of one-time injection, the double-spray should be performed after the last time of final coagulation. If spraying is performed after one hour of final coagulation, the surface of the spray layer should be cleaned with water. If there is an overcut or crack in the depression, it should be sprayed and then sprayed normally.
2 It is forbidden to aim the nozzle at the person.
3 During the injection process, if there is a failure such as blocking or stopping the wind and power failure, the water gate should be closed immediately, the showerhead should be placed down to prevent water from flowing into the feed pipe, and the tapping method should be used to dispose the feed pipe when handling the blocked pipe.
4 Spraying personnel should wear dust masks, latex gloves and glasses.
5 After spraying, the spraying layer was sprayed within 7 days and sprayed once per class. After 7 days, spraying water once a day for 28 days.
6 The spraying machine operator must be specially trained to be familiar with the performance structure and working principle of the spraying machine, and to be able to eliminate general faults and perform daily maintenance and maintenance.
7 The air inlet of the spraying machine is sealed well to prevent the air from blowing dust; the exhaust port is unblocked and the exhaust gas is discharged smoothly; the spraying pipe joint is firm, well-sealed and neatly arranged. Personally equipped with dust masks, dust concentration does not exceed 6mg/m3.
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