The JZM 900 concrete mixer is a self-falling, drum-type concrete mixing machine designed for medium and large construction projects. It has a nominal drum capacity of about 900 liters and is typically used to produce plastic and semi-dry concrete. The mixer is powered by either a diesel engine or electric motor, which drives the drum through a gear or friction transmission system. Its main components include the mixing drum, feeding hopper, water supply system, transmission mechanism, supporting frame, and discharge system. The drum is made of wear-resistant steel and is designed with internal mixing blades that improve efficiency and uniformity of mixing.

Operation

The operation of the JZM 900 begins by feeding measured quantities of cement, sand, gravel, and water into the rotating drum through the hopper. Once the machine is started, the drum rotates continuously, lifting the materials and allowing them to fall under gravity, which ensures thorough and uniform mixing. After the required mixing time, the drum is tilted or reversed to discharge the finished concrete mixture through the outlet chute. The machine operates in a continuous cycle, making it efficient for consistent concrete production on construction sites.