What are the film window opening systems for film greenhouses?

The roll film window system is mainly used in the side wall window of the greenhouse and the roof roll film window. Rolling film windowing system rolls the cover film on the steel pipe, and rolls up or lowers the cover film by rotating the steel pipe.　　 Generally, the length of rolled film steel pipe is about 60 meters, and the longest can reach about 100 meters. The film window opening system has two kinds of manual and motorized, and the transmission mode has two kinds of flexible shaft transmission and direct transmission. Generally, the roof roll film is driven by mechanical transmission or flexible shaft transmission, and the side wall roll film is driven by manual direct transmission, but there are many mechanical roll film on the side wall.　　The core components of the film window opening system are the film motor and the film shaft, and the auxiliary parts vary with the overall mechanism. The film rolling mechanism has stable performance, reliable and safe operation, low cost, and can achieve large-area ventilation, so it is the first choice for the window opening mechanism of the plastic greenhouse. According to the difference in the way of power supply and the installation location, the film roll window structure can be divided into a manual roll film structure and an electric roll film mechanism, and can also be divided into a roof roll film and a side wall roll film mechanism.　　 Label: Machine roll film