Improvement Design And Test Of Amount Of Fluid Seeding Metering Device For Small Grain

Refined a small amount of liquid metering device is the key equipment to achieve a small seedprecision drilling,Because Shanxi province is located in the middle reaches of the the Yellow River River is a semi-arid climate.So the development of the small amount of liquid metering device,.The seed can keep the moisture in the dry environment. In this paper, the small grainrefined a small amount of liquid metering device was designed, the main research contentsinclude the following:(1)Eight kinds of small grain seeds were measured by projection size, measured with iron, steel.aluminum, wood, plastic, rubber friction coefficient with MXD-01 friction coefficient tester; GWJ-II type grain hardness tester and Instron5544 material testing machine to measure thehardness was measured by MP2002; 1000 grain weight of electronic balance.(2)The essence of water retaining agent can be a better testing; the best proportion of gelsuspension is a water retaining agent:seed:water=1.1:10:200.(3)Construction of seeding test platform, use 15WDC motor drive 3 sets of peristaltic pump,powered by 12V DC power supply, can achieve a 3 line of a small amount of liquid metering.(4)The use of silicone hose for liquid metering; motor speed in 20r/min, pass rate reached 84.62%, the replay rate is 15.38%, the leakage sowing rate was 0%, the coefficient of variation was only 14%; when the suction pipe mouth is located in the top of the line box, seed, seed number per hole spacing, hole the best radius of stability, so choose from the topsuction box.(5) adding water retaining agent can make a more smooth, do not hurt, does not affect thegrowth of the seed.