1、 It is an important way to improve the efficiency of concrete mixer equipment to select the right machine and use the mixer correctly according to the requirements of engineering use.

　　1按工程量和工期要求选择

　　1. Select according to the quantity and duration requirements

　　混凝土工程量大且工期长时，宜选用中型或大型固定式混凝土搅拌机或搅拌站。如混凝土工程量小且工期短时，宜选用中小型移动式搅拌机。

　　When the concrete quantity is large and the construction period is long, medium or large fixed concrete mixer or mixing station should be selected. If the concrete quantity is small and the construction period is short, the medium and small mobile mixer should be selected.

　　2按设计的混凝土种类选择

　　2. Select according to the designed concrete type

　　搅拌混凝土为塑性或半塑式时，宜选用自落式搅拌机。它结构简单，维修方便，相对于强制式来说，搅拌效果稍差些。如搅拌混凝土为高强度、干硬性或为轻质混凝土时，宜选用强制式搅拌机。它结构较为复杂，维修保养要求高，但搅拌效果好，效率高。
               

　　When the mixing concrete is plastic or semi plastic, the self dropping mixer should be selected. It has simple structure and convenient maintenance. Compared with the forced type, the mixing effect is slightly worse. If the mixing concrete is high strength, dry hard or light concrete, the forced mixer should be selected. It has complex structure and high maintenance requirements, but it has good mixing effect and high efficiency.

　　3按混凝土的组成特性和稠度方面选择

　　3. Select according to the composition characteristics and consistency of concrete

　　如搅拌混凝土稠度小且骨料粒度大时，宜选用容量较大的自落式搅拌机。如搅拌稠度大而骨料粒度大的混凝土时，宜选用搅拌筒转速较快的搅拌机。如稠度大而骨料粒度小或主要应用于轻骨料或者是硬性骨料混凝土的搅拌中，宜选用强制式搅拌机。一般高强度等级的、对混凝土的状态要求高的、用量大的、都需要用强制式搅拌机。

　　If the consistency of the mixing concrete is small and the aggregate size is large, the self dropping mixer with large capacity should be selected. For example, when mixing the concrete with high consistency and large aggregate size, the mixer with fast mixing drum speed should be selected. If the consistency is large and the aggregate size is small, or it is mainly used in the mixing of light aggregate or hard aggregate concrete, the forced mixer should be selected. Generally high-strength grade, high requirements for the state of concrete, large quantity, all need to use a forced mixer.

　　二、正确选择好所用搅拌机后在使用过程中做好以下工作，将大大提高搅拌机工作效率：

　　2、 After selecting the mixer correctly, the following work will be done in the use process, which will greatly improve the working efficiency of the mixer:

　　1做好润滑工作

　　1. Do well in lubrication

　　混凝土搅拌机每日工作前都要检查各润滑处的油料及电路和控制设备，并按要求加注润滑油。但是搅拌机需要润滑的本地有很多，加润滑剂的方法和量都不相同，有时候还需要更换新的润滑剂。

　　Before the concrete mixer works every day, check the oil, circuit and control equipment at each lubrication point, and fill the lubricating oil as required. However, there are many places where the mixer needs to be lubricated. The method and quantity of adding lubricant are different. Sometimes, a new lubricant needs to be replaced.

　　2做好清洁工作

　　2 do a good job in cleaning

　　混凝土搅拌机必须保证混凝土搅拌机机体的清洁，机体内的污物及障碍物，特别是混凝土搅拌机的搅拌叶片或侧叶片与罐内壁间的异物。

　　The concrete mixer must ensure the cleanness of the concrete mixer body and remove the dirt and obstacles in the body, especially the foreign matters between the mixing blade or side blade of the concrete mixer and the inner wall of the tank.

　　3做好检查工作

　　3. Do a good job in inspection

　　①每日工作前必须检查传动离合器和制动器是否灵活可靠，钢丝绳是否损坏，轨道滑轮是否良好，周围有无障碍及各部位的润滑情况等;

　　① Before daily operation, it is necessary to check whether the transmission clutch and brake are flexible and reliable, whether the steel wire rope is damaged, whether the track pulley is in good condition, whether there are obstacles around and the lubrication of various parts, etc;

　　②搅拌机必须实施二级漏电保护，上班前电源接通后，必须仔细检查，经空车试转认为合格后，方可使用;

　　② The mixer must be provided with two-level leakage protection. After the power supply is connected before going to work, it must be checked carefully. It can be used only after it is considered qualified after the idle test run;

　　③混凝土搅拌机每日工作前，在搅拌筒内加水空转12秒钟，同时检查离合器和制动装置工作的可靠性。

　　③ Before the concrete mixer works every day, add water into the mixing drum and idle for 1 to 2 seconds. At the same time, check the reliability of the clutch and brake device.