In the mixing plant equipment, the concrete mixer is the most important core component, which determines the productivity of the entire mixing plant and the quality of the concrete mixing plant. Next, we will come together to understand the use of concrete mixer under what precautions.
Inspection of concrete mixer before use
1. Check whether the gearbox and the lubrication part are lubricated (fat) well enough.
2, check the power supply voltage, rated voltage 380V, pressure drop shall not be less than 10%, but not more than 5%, otherwise it will affect the normal operation of the machine.
3. Check that the wiring of the motor and electrical components is secure, and ground the motor with a wire to ensure safety, and then turn on the power.
4. Turn on the waterway and check the reliability of the water pump, throttle valve and water spray pipe.
5. Check whether the link bolts of various parts of the vehicle are firm, especially the connection of moving parts. If loose, tighten the bolts.
6. Check if the wire rope is arranged neatly on the reel, and if it is loose, it should be re-wound.
7. Check whether there are any foreign matter in the mixing drum, in the hopper, and on the track frame. Clean up if any accumulation occurs.
8. Check whether the lifting of the hopper is flexible, whether the brake and the stroke switch are sensitive, accurate, safe and reliable.
Concrete mixers use matters needing attention
1. Before the new machine is used, in accordance with the requirements of the instruction manual of the concrete mixer, each system and component shall be inspected one by one and the necessary test run shall be carried out. The empty car is in operation. Check the rotation direction of the mixing drum or the stirring blade. The operation and braking of each working device are confirmed by normal operation.
2. The fixed concrete mixer should be installed on a firm pedestal. When used for a long period of time, anchor bolts should be buried; for short-term use, sleepers can be laid under the stand and leveled and stabilized.
3, for mobile concrete mixers, should be installed on a flat and hard floor with square wood or bracket frame, and to keep the level of tires from force. If it is used for more than three months, the tire should be unloaded and properly stored. The end of the axle should be cleaned and protected against rust.
4. For some mixers that need to be excavated on the hopper of the hopper, the pits around them should be tamped to prevent surface water from flowing into the pit. The bottom bearing surface of the loading track frame shall be compacted or paved, and the back of the frame shall also be supported with wood to prevent the deformation of the track during operation.
5. After the concrete mixer is started, the mixer should reach the normal rotation speed and then feed. After adding the new material, the original concrete in the mixer must be completely discharged before adding the new material. Do not start the mixer during stoppage or full load, except for reversing discharge.
6. In the use of concrete mixers, do not allow the sandstone to fall into the running part of the machine, so as not to make the running parts jam and damage. After the hopper is lifted, no one can pass or stay under the bucket so as to avoid accidents caused by brake failure. If it is necessary to overhaul or perform cleaning work under the bucket, stop the machine and secure the upper hopper with a chain of insurance.
7. In the operation of the mixer, if it is found that the fault cannot continue to operate, the power supply should be cut off immediately, the concrete in the mixing drum should be cleaned, and then repaired.
8, after the operation, the mixer should be fully cleaned, the operator needs to enter the cleaning of the cylinder, you must cut off the power, set up someone outside the guardianship, or remove the fuse and lock the electric gate, and then enter.
9. The handle of the hopper on the mixer shall be fixed with a pin so that when the person enters the interior of the Jane, the body touches the handle to lift the hopper and an accident occurs.
10. After operation, the hopper of the mixer should be lowered into the pit of the hopper, and if it needs to be raised, the chain shall be applied firmly.
The role of concrete mixer
(1) The components are evenly distributed, achieving macroscopic and microscopic homogeneity.
(2) Destruction of the agglomeration phenomenon of cement particles, so that the surface of each particle is infiltrated by water, which promotes the development of diffusion phenomena.
(3) Destroy the initial hydrated film coating on the surface of cement particles and promote the combination of cement particles and other materials to form ideal hydration products.
(4) As the surface of the aggregate is covered with a thin layer of dust and clay, which hinders the formation of the interfacial bonding layer, the materials should be repeatedly bumped and rubbed against each other to reduce the influence of the dust film.
(5) Increase the number of times that each unit of the mixture participates in the movement and the crossover frequency of the movement trajectory to accelerate homogenization.
Summary: The above is the content of the use of the concrete mixer introduced by Xiao Bian for everyone. We hope that we can effectively help everyone. If you have any good suggestions, look forward to communicating with Xiao Bian. For more information, please pay attention to this website.
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