气吸式大豆精密排种器排种性能试验研究

Experimental Study on the Seeding Performance of the Air-Suction Soybean Precision Metering Device

在精密播种机中,精密排种器是其工作的核心部件,工作性能直接制约了播种机播种性能的优劣。为了探究影响气吸式排种器工作性能的主次因素,以大豆气吸式排种器为研究对象进行了台架性能试验测试。试验确定排种盘转速为影响排种器排种性能的主次因素,气室负压为次要因素;排种盘转速为20 r/min,气室负压为5 k Pa时该大豆气吸式排种器排种性能最优,合格指数高达91.13%。该研究结果对排种器结构改进以及性能优化提供了参考依据。

The precision metering mechanism is one core component of a planter. Its seeding performance directly cause the planter’ s seeding quality. In order to study the main factor that influence the working performance of the air-suction precision metering device, this paper taking soybean air-suction precision metering device as the research object conduct the performance tests on test bench. The main factors who influence the working performance of the air-suction precision metering device is the seed-wheel rotation, the secondary factor is negative pressure of the chamber; when the seed-wheel rotation is 20 r/min and the negative pressure of the chamber is 5. 0kPa the working performance is best, its quali-fied index is 91 . 13%. The results provide a reference for improving the structure and performance of the seed metering device.