Concrete mixer should be familiar to everyone, concrete as a major building material, its market demand is very large. Many construction projects will use concrete mixer for concrete production. Today I'm going to talk about the concrete mixer. How should concrete mixers be maintained in different levels? Next, we will talk about "what is the function of electrical system of concrete mixer and how to maintain it?" Let's learn more about it.

分享混凝土攪拌機電氣系統作用及影響

Function and influence of electric system of concrete mixer

混凝土攪拌機的電氣控制系統需是控制混凝土攪拌機的主傳動電機，供水系統電機，上料，下料等的電機。所有電器控制元件都設在配電箱中。電器元件控制滿足的使用要求：主電機可以點動以滿足安裝修理過程的要求。

The electrical control system of concrete mixer should be the main drive motor of concrete mixer, the motor of water supply system, the motor of loading and unloading, etc. All electrical control elements are set in the distribution box. Electrical component control to meet the use requirements: the main motor can be inched to meet the requirements of the installation and repair process.

電氣控制線路設有空氣開關，熔斷器，熱繼電器具有短路保護，過載保護，斷相保護的功能，所有控制按鈕及空氣開關手柄和指示燈均布置在配電箱門上，并設有門鎖。配電箱內的電器元件安裝在一塊鐵板上，可靠，操作維修方便。

The electric control circuit is equipped with air switch, fuse and thermal relay, which have the functions of short-circuit protection, overload protection and open phase protection. All control buttons, air switch handles and indicator lights are arranged on the door of the distribution box, and the door lock is set. The electrical components in the distribution box are installed on an iron plate, which is safe, reliable and convenient for operation and maintenance.

混凝土攪拌機供水系統是電動機、水泵、節流閥及管路等組成，啟動水泵，即可將注入攪拌筒，水的流量通過閘閥調節，供水總量由時間繼電器控制。當按鈕轉到“時控”位置時，水泵會按設定的時間運轉和自動停止，當按鈕轉到“手動”位置時，可連續供水。

The water supply system of concrete mixer is composed of 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 regulated by gate valve, and the total amount of water supply is controlled by time relay. When the button is turned to the "time control" position, the water pump will run and stop automatically according to the set time. When the button is turned to the "manual" position, the water supply can be continuous.

在混凝土攪拌機生產混凝土時，對混凝土質量影響較大的除了攪拌機自身的工作性能以外，就是供水精度。由于供水精度要求控制在2%的范圍內，故如何更好的滿足精度問題是供水方式的選擇，應加以認真考慮。

When the concrete mixer is used to produce concrete, besides the working performance of the mixer itself, the accuracy of water supply has a great impact on the quality of concrete. As the accuracy of water supply is required to be controlled within 2%, how to better meet the accuracy is the choice of water supply mode, which should be seriously considered.

目前，國內運用的主要是時間繼電器或虹吸式水箱控制供水精度。但由于虹吸式水箱在不配備站的情況下有諸多不便，故而選用混凝土攪拌機專用水泵配以時間繼電器控制，在誤差允許范圍內讓供水時間略大一些，如果砂石過濕則供水時間相對短一些。

At present, time relay or siphon water tank are mainly used to control water supply precision in China. But the siphon type water tank has many inconveniences when it is not equipped with a station, so the special water pump for concrete mixer with time relay control is selected to make the water supply time slightly larger within the allowable error range. If the sand is too wet, the water supply time is relatively shorter.