| 摘要 |
FIELD: agricultural engineering; fertilizer. ^ SUBSTANCE: working member of fertilizer has screw with throwing member rigidly secured on end of shaft. Throwing member is made in form of truncated cone with throwing radially arranged along its side surface and symmetrically displaced relative to each other over circumference in staggered order. Cone with blades is enclosed with clearance in fixed conical case with throw out aperture. Discharge end of feed screw is limited by fixed branch pipe. ^ EFFECT: provision of uniform distribution of fertilizer on field surface. ^ 1 dwg |
