肉兔养殖用弹簧螺旋喂料机输送性能试验研究

针对弹簧螺旋喂料机在肉兔养殖的颗粒饲料输送过程中存在易破碎、易残留、料盒喂料量波动大的问题,同时为了提高弹簧螺旋喂料机的输送量,对弹簧螺旋喂料机输送过程中颗粒饲料的受力状态和输送机理进行分析;采用自行设计的弹簧螺旋喂料机试验平台,以颗粒饲料破碎率、管内残留率、输送量和喂料稳定性为评价指标,以进料口处绞龙固定连接轴的长度...

Experimental study on the conveying performance of spring screw feeder for meat rabbit breeding

In order to solve the problems that the feed pellets were easy to be broken, easy to have residual remaining, and there was large fluctuation of feeding mass in the feeding bowl during the conveying process, and to improve the throughput of the spring screw feeder, this study analyzed the stress state and conveying mechanism of the feed pellets during the conveying process of the spring screw feeder. Taking the length of the fixed connecting shaft for screw at the inlet feed, the clearance between the screw pipe and the screw blade, the rotation speed as influencing factors, and the feed particle crushing rate, residual rate in the pipe, the throughput and the feeding stability as evaluation indicators, the combined orthogonal tests were carried out on a self-designed spring screw feeder test platform in this study. The results showed that: 1)Screw clearance had a significant influence on the crushing rate, residual rate, throughput and feeding stability(P<0. 05), while the rotation speed and feed shaft length only had a significant influence on throughput(P<0. 05); 2)With the increase of clearance, the crushing rate and residual rate decreased significantly, the throughput and the feeding stability increased significantly; As the speed increased and the shaft length decreased, the throughput was significantly increased. 3)The optimized parameter combination of the spring screw feeder was that the length of the fixed connecting shaft for screw 180 mm, the clearance 4. 6 mm(the inner diameter of the screw tube 46 mm), and the speed 169 r/min. Compared with the conveying performance of the existing spring screw feeder, the overall conveying performance of the optimized spring screw feeder is as follows: the crushing rate was reduced by 84. 7%, the residual rate was reduced by 3. 9%, the conveying capacity was increased by 30. 7%, and the feeding stability was increased by 27. 1%.