Many people would be familiar with concrete mixers. As a major building material, the market demand for concrete is very large. Many construction projects use concrete mixers for concrete production. Today I will talk to you about the topic of concrete mixer. How should the concrete mixer be classified and maintained? Let ’s take a look at “What is the function of the concrete mixer electrical system and how to maintain it?”

The role and influence of the electrical system of the concrete mixer:

The electrical control system of the concrete mixer needs to be the main drive motor for the concrete mixer, the motor for the water supply system, and the motor for loading and unloading. All electrical control components are located in the distribution box. Electrical component control meets the requirements for use: the main motor can be jogged to meet the requirements of the installation and repair process.

The electrical control circuit is provided with air switches, fuses, and thermal relays with short circuit protection, overload protection, and phase failure protection functions. All control buttons, air switch handles and indicator lights are arranged on the distribution box door, and are equipped with door locks. . The electrical components in the distribution box are installed on an iron plate, which is safe and reliable, and easy to operate and maintain.

The concrete mixer water supply system is composed of electric motor, water pump, throttle valve and pipeline. When the water pump is started, it can be injected into the mixing drum. The water flow is adjusted by the gate valve, and the total water supply is controlled by the time relay. When the button is turned to the "time control" position, the pump will run at the set time and stop automatically. When the button is turned to the "manual" position, water can be continuously supplied.

In the production of concrete by a concrete mixer, in addition to the working performance of the mixer itself, the impact on the quality of the concrete is the accuracy of the water supply. Since the water supply accuracy is required to be controlled within the range of 2%, how to better meet the accuracy problem is the choice of water supply mode, which should be carefully considered.

At present, the main application in China is time relay or siphon type water tank to control water supply accuracy. However, because the siphon type water tank has many inconveniences without a station, a dedicated concrete mixer pump is equipped with a time relay control to allow the water supply time to be slightly longer within the tolerance range. If the sand is too wet, the water supply time is relatively short. some.

【The Experience Of Classifying and Maintaining Concrete Mixers】

Concrete mixers are the burden of mixing concrete on the construction site. The equipment will not be maintained for a long period of time. After being used for a long time, the concrete mixer will cause a decrease in efficiency. This requires the technicians to maintain the concrete mixer frequently. The maintenance of the mixer is divided into primary maintenance and secondary maintenance according to its maintenance cycle and degree. The following is introduced by the professional concrete mixing station manufacturers:

First-level maintenance: One guarantee interval is 5000 cubic meters, and the maintenance is stopped for four hours. The center is lubrication and sturdiness. The maintenance and operator will carry out the routine warranty content and increase:

1. Dust-clean the air pump air filter element.

2. Add sufficient grease to the oil nozzles of the screw feeder, check the oil level of the screw gear box, add sufficient lubricant, and add sufficient lubricant to the pump.

3. Check if the connecting screw of the dragline arm is missing or loose, and the rope clamp is loose.

4. Check whether the coupling and rubber block of the dragline and mixer are damaged.

5. Check and replace the feeding rollers and spiral conveying pipes for oil and ash leakage.

Second-level maintenance: The second guarantee is centered on solid adjustment, with an interval of 10,000 cubic meters, and the maintenance is suspended for 8 hours.

1. Adjust the gap between the stirring blade and the mixer.

2. Check, adjust the tension of the transmission belt, and tighten the motor anchor bolts.