1. Feeding system:
Composed of a feeding hopper, vibrating feeder, and chute. The rice material to be sorted enters the vibrating feeder from the hopper, and then is automatically arranged into a continuous row of slender electric current beams through the vibration and guiding mechanism. After being accelerated through the slot, it falls into the detection area of the photoelectric sorting at a constant speed. To ensure clear display of materials in the optical sorting and spraying areas. In addition to providing the function of selecting raw grains for the color classifier, the feeding system can also control the output of the color classifier. The output of the color classifier per unit time can be controlled by adjusting the flow control board of the feeding hopper and the vibration of the vibrating bucket. Our country has vast areas for recovery. In some places, due to humid air, rice may stick to the slide or adhere to each other when sliding down, which can affect the accuracy of color selection. Therefore, the slide of the chute must be able to heat and dry the rice entering it.
2. Optoelectronic system:
The photoelectric system is the core part of the sorting machine, mainly composed of a light source, a background plate, a CCD lens, and related auxiliary equipment. The light source provides stable and uniform illumination for the tested material and background board. The experimental results indicate that the blue LED light source has the best illumination effect. The CCD lens converts the reflected light of the tested material in the detection area (which is a sealed matte cassette designed to prevent stray light from entering the CCD lens and affecting accuracy) into an electrical signal. The background board provides reference signals for the electronic control system, and its reflection characteristics are basically the same as those of qualified products, but there are significant differences from the rejected objects.
3. Sorting system:
The sorting system consists of accessories such as unloading bins, air injection valves, air compressors, and air filters and purifiers. Due to the high kinetic energy of the rice material sprayed by the high-speed nozzle, the space of the discharge bin should be large enough, and shock absorption measures should be taken at the contact part between the material and the discharge bin. After hitting the discharge box, it bounces back to prevent rice from entering the detection area of the CCD lens to avoid accidental impact. Experimental results have shown that the spacing and number of pneumatic nozzles are one of the key factors affecting the accuracy of color sorting machines.
4. Cleaning system:
The cleaning system consists of cylinders, glass wipers, and other components. Because rice produces dust and other impurities, it is easy to adhere to glass during the color separation process. Once excessive dust and impurities adhere to the window glass, the photoelectric system used for classifying and detecting tea materials through the window glass will easily cause chain problems, such as incorrect detection. It can affect the accuracy of color separation and the output ratio of color separation. In the worst case, it can lead to frequent operation of the air nozzle, thereby shortening the lifespan of the nozzle and control system, and causing combustion of the nozzle control system. The glass wiper is installed on the cylinder, and the main control system drives the sliding of the movable cylinder piston by controlling the cylinder valve switch at a preset time to achieve the effect of regularly cleaning dust and impurities on the glass.
5. Operating System:
Using a large screen, widescreen, and color touch operation platform, multiple color selection modes are pre-set for customers. And establish a friendly human-machine interface, which can be easily and quickly adjusted according to the specific situation of rice materials.