Automatic feeding mixing tank is a mixing equipment that combines the functions of concrete truck and concrete mixing plant, integrates concrete loading, metering, mixing and discharging, and can realize concrete transportation and on-site concrete construction. The equipment is fast and efficient, and greatly improves the production efficiency, The automatic feeding mixing tank is suitable for concrete engineering construction in various special environments, crowded urban areas and remote areas.

普通的攪拌罐用來運送建筑用混凝土的專用卡車；由于它的外形，也常被稱為田螺車。這類卡車上都裝置圓筒型的攪拌筒以運載混合后的混凝土。

Ordinary mixing tank is a special truck used to transport construction concrete; Because of its shape, it is often called snail car. Such trucks are equipped with cylindrical mixing drums to carry the mixed concrete.

混凝土攪拌罐所裝運的混凝土含水量來分，有濕料式、干料式和半干料式三種攪拌運輸。國內大多采用濕料式的，它可裝運由攪拌廠（站）生產的混凝土或按配比混合的骨料（砂、石子）、水泥和水，在運輸過程中，不斷對濕料慢慢攪拌，防止混凝土在運輸過程中初凝和離析。但是，混凝土從生產到澆注的時間一般不能超過1.5h,以免混凝土凝結。所以，在更遠距離運輸的情況下，需采用干料和半干料攪拌運輸車來運送。

The concrete transported by the concrete mixing tank can be divided into three types: wet material type, dry material type and semi dry material type. Wet materials are mostly used in China. It can transport concrete produced by mixing plant (station) or aggregate (sand, stone), cement and water mixed according to the proportion. During transportation, the wet materials are continuously mixed slowly to prevent initial setting and segregation of concrete during transportation. However, the time from production to pouring of concrete shall not exceed 1.5h to avoid concrete setting. Therefore, in the case of long-distance transportation, it is necessary to use dry material and semi dry material mixing trucks for transportation.

干料式攪拌運輸車可按配比將干狀骨料和水泥直接裝入該車的攪拌筒內，在運輸過程中筒內的干料進行攪拌，當車輛將要到達施工場地或在施工場地再加水完成混凝土的攪拌。

The dry aggregate mixer truck can directly load the dry aggregate and cement into the mixing drum of the truck according to the proportion, and mix the dry materials in the drum during transportation. When the vehicle is about to arrive at the construction site or add water at the construction site to complete the mixing of concrete.

半干料式攪拌運輸車所裝運的混凝土中的骨料和水泥也是按配比配制的，并含有一定的水，但水的含量達不到澆注要求，需在車輛將要達到施工場地或在施工場地加水攪混凝土攪拌車有汽車底盤、攪拌筒、進出料裝置、供水系統和液壓傳動系統等組成。

The aggregate and cement in the concrete transported by the semi dry mixer truck are also prepared according to the proportion and contain a certain amount of water, but the water content cannot meet the pouring requirements. It is necessary to add water to mix the concrete when the vehicle is about to reach the construction site or at the construction site. The mixer truck is composed of car chassis, mixing drum, feeding and discharging device, water supply system and hydraulic transmission system.

攪拌筒的主要作用是儲存和攪拌混凝土，安裝在汽車車架的后半部，主要由筒體、連接法蘭、滾道及攪拌葉片組成。攪拌筒的外部結構大多是兩端錐體、中間為圓柱體，其外形酷似橄欖。混凝土儲罐由耐磨薄鋼板制成，為了能夠自動裝、卸混凝土，其內壁焊有特殊形狀的螺旋葉片。

The main function of the mixing cylinder is to store and mix concrete. It is installed in the rear half of the car frame and is mainly composed of cylinder, connecting flange, raceway and mixing blade. The external structure of the mixing drum is mostly a cone at both ends and a cylinder in the middle, which looks like an olive. The concrete storage tank is made of high-quality wear-resistant steel sheet. In order to automatically load and unload concrete, its inner wall is welded with spiral blades of special shape.