The main parts of the vegetable washing machine are made of high-quality stainless steel, which has high washing degree and can maintain the original color. It is widely used to clean various kinds of agricultural and sideline products such as leaf vegetables, edible fungi, seafood and Chinese herbal medicine. At present, the machinery used for vegetable cleaning mainly adopts high-pressure spray cleaning, bubble cleaning, roller friction cleaning, brush cleaning, ultrasonic cleaning and the like.
1. High-pressure spray cleaning: High-pressure spray cleaning mainly relies on the force generated by the high-pressure water sprayed from the nozzle to remove the dirt attached to the vegetable surface. 
2. Bubble cleaning: The bubble cleaning method is to make the air enter the water, continuously stir the cleaning water and generate a large number of air bubbles, and the gas generated on the surface of the object to be cleaned cleans the object to be washed. 
3, brush cleaning, brush cleaning method is through the direct contact between the bristles and water materials, so that the dirt on the surface of the material is brushed clean, this type of cleaning is suitable for the cleaning of potatoes, radishes and other root vegetables.
4. Roller friction type cleaning: the lower part of the drum friction type cleaning sinks in the water, and the material is placed in the screen type drum. Due to the rolling action of the drum, friction occurs between the material and the material and between the material and the drum, so that the material is made. The surface soil is removed and cleaned. This type of cleaning has both peeling effect and the vegetables that can be washed have limitations. 
5, ultrasonic cleaning: ultrasonic cleaning method is to generate millions of tiny vacuum bubbles in the liquid, these bubbles are rapidly generated in large quantities under the action of sound pressure, and constantly violent, producing strong pressure and negative pressure suction, so that The dirt leaves the surface of the object and does not cause physical damage to the object to be cleaned. The method is used for washing vegetables, and the technology is not fully mature. Whether or not it has adverse effects on vegetable tissues due to the action of ultrasonic waves needs further study. 
The working principle of the vegetable washing machine Firstly, all the vegetables to be washed are put into the water tank, and are fully dispersed, tumbling, washing and conveying under the action of high-pressure water flow and strong air bubbles. The sediment on the surface of the vegetable will fall off and settle to the bottom compartment to prevent re-contamination caused by tumbling backflow. The debris and bugs washed from the vegetables float on the surface of the water and are collected by the mesh. The water overflowing the sink is removed from the tank and into the nylon bag. After the vegetables are washed by the vegetable washing machine, they are then sprayed and then sent out through a conveyor belt. There is a blowing device at the end of the conveyor belt, and the debris that has not been thoroughly cleaned is blown off.
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