Twin Shaft Concrete Mixer

A: Twin shaft concrete mixer has two horizontally placed mixing shafts, which are equipped with mixing blades. When working, the two shafts rotate in opposite directions, and the mixing blades forcibly shear, convection, and diffuse the materials, allowing them to be fully mixed in a short period of time and achieving the goal of uniformly mixing concrete.

A: Suitable for mixing various types of concrete, such as commercial concrete, ready-mix concrete, ordinary concrete, dry hard concrete, plastic concrete, lightweight aggregate concrete, precast concrete, and concrete for prefabricated components...

A: The mixing time is usually determined based on the type of concrete, the model of the mixer, and the amount of mixing materials. In general, the mixing time for ordinary concrete is 30-90 seconds. For concrete with special requirements, the mixing time may need to be appropriately extended. It is recommended to determine the optimal mixing time through experiments.

A: Daily maintenance should pay attention to cleaning the residual materials inside and outside the mixing drum to prevent material hardening from affecting the next mixing and equipment performance. Check whether the rotation of the mixing shaft is flexible and whether the bolts are loose. If there is any looseness, it should be tightened in a timely manner. Regularly check the lubrication system to ensure that the mixing shaft and other transmission components are well lubricated.

A: Daily maintenance should be carried out daily, mainly including cleaning the debris inside and outside the mixer, checking whether the bolts in various parts are loose, etc. First level maintenance can be carried out once a month, involving lubrication of transmission components, inspection of electrical systems, etc. Secondary maintenance is carried out approximately every six months, including checking the wear of the mixing blades, replacing seals, and other complex maintenance tasks.

A: Firstly, cut off the power and ensure that the mixer is in a stopped state. Open the maintenance door of the mixer, remove the bolts that fix the mixing blades, and remove the worn blades. When installing new blades, pay attention to keeping the installation angle and position of the blades consistent with the original, then tighten the bolts, and after installation, check whether the blades can operate normally.

A: Motor overload may be due to excessive mixing of materials, exceeding the rated capacity of the mixer. The amount of materials input should be reduced to comply with the specifications of the mixer. It is also possible that there is significant resistance encountered during the mixing process, such as large hard objects in the material that need to be cleaned.

A: First, stop the mixer from running. Check if the mixing blades are rubbing against the mixing drum wall. If there is friction, adjust the blade position. It is also possible that the transmission components are loose or damaged. Check whether the transmission components such as belts and gears are normal. If there are any problems, tighten or replace them in a timely manner. In addition, objects entering the mixing drum may also cause noise, so it is necessary to clean up the objects in time.

A: Firstly, the mixer should be equipped with sturdy protective barriers and covers to prevent operators from coming into contact with the rotating mixing shaft and blades. The equipment should be well grounded to avoid electric shock accidents. It is strictly prohibited to put hands or other objects into the mixing drum while the mixer is running. At the same time, operators should wear necessary labor protection equipment, such as safety helmets, protective gloves, etc.

A: When conducting maintenance, it is necessary to cut off all power sources and arrange personnel to guard the power switch.
When the equipment is stopped, it is necessary to add sufficient oil to all lubrication points of the mixer and maintain the shaft end seal to prevent corrosion and failure of the sealing device.
When conducting electrical circuit maintenance on the mixer, it is necessary to disconnect the power supply in advance.
During the operation, attention should be paid to avoiding objects such as sand and gravel from falling into the operating parts of the machine. The material stuck at the bottom of the hopper should be cleaned up in a timely manner to avoid affecting the opening and closing of the hopper door.
When the double horizontal shaft mixer is running, the flushing switch must be turned off.
When lifting the hopper, it is strictly prohibited to stand under the hopper.
During the operation of the mixer, it is not allowed to stop it at will.