DESIGN AND TEST OF NEGATIVE PRESSURE CHAMBER ROTARY BUCKWHEAT SEED METERING DEVICE

A negative pressure chamber rotary precision seed metering device was designed to achieve the buckwheat sowing goal, solving problems of traditional poor sealing and air suction high power consumption. The planting plate fixedly connected with shell forming a chamber, which rotates around an axis. suitable for designed. Single factor test response surface were carried out on device. Results showed that achieved best performance when pressure, hole diameter rotation speed 2.4 kPa, 2.0 mm 25 r/min respectively. qualified index, multiples index miss-seeding respectively 88.32%, 7.35%, 4.33%, met technical requirements sowing. results study provided references design application