In the long-term work of the self loading mixer, the phenomenon of concrete congealing on the automatic feeding mixer and blades often occurs. If it is not cleaned in time, it will not only easily cause the segregation of the loaded concrete, but also cause the vehicle overload due to insufficient tank volume, resulting in the failure of hydraulic pump and hydraulic motor. However, due to the particularity of concrete materials, glued cans can only be cleaned manually with air pick, which takes time and labor, and seriously affects the normal attendance of vehicles.

经过实践和分析，我们认为自动上料搅拌车粘罐原因可以分为两大类：即设计不合理和使用不当，主要有以下几种形式：

Through practice and analysis, we think that the reasons for sticking can be divided into two categories: unreasonable design and improper use

（1）卸料残余率和叶片设计的不合理。从搅拌筒的内部结构看，自动上料搅拌车的拌筒是依靠回转的筒体带动其中的两条螺旋叶片所产生的螺旋运动，使混凝土获得既有“切向”又有“轴向”的复合运动，从而使搅拌筒具有搅拌和卸料的功能，因此形成这一螺旋运动的有关因素，诸如螺旋叶片的曲线参数，搅拌筒的几何形状和尺寸等对搅拌车的卸料残余率都有重要影响。而过大的卸料残余率意味着搅拌车在卸料结束后在自动上料搅拌车里会有更多的余料，因而更有可能因日积月累在搅拌罐中粘料。目前大多数厂家采用的是等角对数螺旋线叶片，在卸料残余率上还有很大的改进空间。

(1) The discharge residual rate and blade design are unreasonable. From the internal structure of the mixing drum, the mixing drum of the automatic feeding mixing truck relies on the rotating cylinder to drive the spiral motion generated by two spiral blades, which makes the concrete obtain the compound movement of both "tangential" and "axial", so that the mixing drum has the function of mixing and discharging. Therefore, the factors related to the formation of this spiral movement, such as the curve parameters of spiral blades The number, geometry and size of mixing drum have important influence on the discharge residual rate of mixer truck. However, the excessive discharge residual rate means that there will be more residual materials in the automatic feeding mixer truck after unloading, so it is more likely to stick materials in the mixing tank over time. At present, most manufacturers use equiangular logarithmic spiral blades, and there is still a lot of room for improvement in the discharge residual rate.

（2）自上料搅拌车工作环境温度过高。夏季在南方地区白天中午前后，环境温度经常超过30℃，在这种情况下运输混凝土，将会由于混凝土坍落度损失快以及罐体周围温度相对中心更高，因而混凝土更容易粘罐。

(2) The working environment temperature of the mixer is too high. In summer, the ambient temperature often exceeds 30 ℃ around noon in the south of China. In this case, the concrete is more likely to stick to the tank due to the rapid loss of concrete slump and the higher temperature around the tank.

（3）运输距离过长。随着城市化的进程及城市规划的要求，越来越多的搅拌站被要求迁到郊区和郊县，与市区的距离越来越远，而由于混凝土这一产品的特殊性，任何预拌混凝土在未添加缓凝剂的情况下，都在1h左右进入初凝状态，如果这时才进行混凝土浇注施工，不但影响混凝土的工程质量，而且因混凝土失去流动性，易在搅拌筒及叶片上凝结，导致粘罐，严重时甚整车混凝土粘在罐内及造成液压设备的损坏，所以自动上料搅拌车运送预拌混凝土有其时间控制的输送半径，一般应控制在1h以内。

(3) The transportation distance is too long. With the process of urbanization and the requirements of urban planning, more and more mixing plants are required to move to the suburbs and suburban counties, and the distance from the urban area is getting more and more far. Due to the particularity of concrete, any ready mixed concrete will enter the initial setting state within 1h without adding retarder. If the concrete pouring construction is carried out at this time, it will not only affect the concrete quality Engineering quality, and because of the loss of fluidity of concrete, it is easy to coagulate on the mixing drum and blades, resulting in sticking to the tank, and even the whole vehicle concrete sticking in the tank and causing damage to the hydraulic equipment, so the automatic loading mixer truck has its time controlled conveying half diameter for transporting ready mixed concrete, which should be controlled within 1 h generally.

（4）使用维护不当。自动上料搅拌车驾驶员在搅拌车卸料完毕后未及时清理清洗搅拌罐内及叶片上残留的混凝土，在搅拌车回站过程中不转动搅拌罐，残留的混凝土干燥后凝固在拌筒及叶片上，以后就会越聚越多，形成粘罐现象。

(4) Improper use and maintenance. The driver of the automatic loading mixer does not clean and clean the residual concrete in the mixing tank and on the blades in time after the unloading of the mixer truck, and does not rotate the mixing tank during the return process of the mixer truck. The residual concrete will solidify on the mixing drum and blade after drying, which will accumulate more and more and form the phenomenon of sticking to the tank.

以上就是自上料搅拌车 为大家介绍额相关知识，更多的详细内容，可关注公司网站：http://www.jfhntjbj.com

The above is the introduction of relevant knowledge from the charging mixer. For more details, please pay attention to the company's website: http://www.jfhntjbj.com