新型蔬菜清洗机的研制

分析了超声波和气泡作为蔬菜清洗动力的机理。设计制造了以超声波和气泡为清洗动力的蔬菜清洗试验机。以试验机为基础进行蔬菜清洗正交试验，确定了适合蔬菜清洗的工艺参数：超声波功率450 W、气泡强度25 m³/h、清洗时间4 min。以此试验参数为依据研制了蔬菜清洗机。试验表明，该清洗机每小时清洗叶类蔬菜120 kg以上，其洗净率大于95%，破损率小于2%；每小时清洗根茎类蔬菜240 kg以上，其洗净率大于90%，破损率小于1%。

Research and development of a new-style washer of vegetable

The mechanism of using ultrasound and air bubble to clean vegetable was analyzed and the vegetable cleaning tester was developed. The orthogonal test of vegetable cleaning was done in this tester and the optimum parameters of vegetable cleaning was discovered as follows: the ultrasonic power is 450 W, the air bubble's intensity is 25 m³/h and the cleaning time is 4 min. The washer of vegetable was developed on the basis of the optimum parameters. When the washer was used to clean leaf vegetable, the productivity, abluent ratio and breakage were over 120 kg per hour, more than 95% and less than 2%, respectively. When the washer was used to clean rhizome vegetable, the productivity, abluent ratio and breakage were over 240 kg per hour, more than 90% and less than 1%, respectively.