| 摘要 |
A concrete mixer truck type of spray device is provided to store a great deal of contents in a tank, mixing the contents not to be hardened, and discharge the contents to the outside. A concrete mixer truck type of spray device comprises a mixer drum, a storing tank(20), a spraying unit(30), an opening and closing unit(41), a flow rate control unit, a discharge rate control unit, and a direction control unit. The mixer drum is mounted on a vehicle and rotated around a shaft to mix contents while moving. The storing tank receives the contents in the mixer drum. The spraying unit is installed to spray the contents in the storing tank. The opening and closing unit is installed to open and close an outlet of the storing tank to feed the contents in the storing tank to the spraying unit. The flow rate control unit has a water level sensor(51) for detecting water level of the storing tank and an opening and closing valve(52). The opening and closing valve connects with the water level sensor and close a passage from the mixer drum to the storing tank. The flow rate control unit controls rotation speed of the mixer drum according to the water level of the storing tank. |
