FIELD: agriculture engineering. SUBSTANCE: hopper has outer fence 1, bottom 2, cover 3, and insert 4. The insert is made of a funnel-shaped tank provided with holes 7,8,9 and damping spacers 6,10. Bottom 2 and cover 3 are provided with chambers 11,12. Outer fence 1 is provided with stops 18 whereto piping members 19 with spacers 20 are secured. Trancated rigid funnel-shaped shell 24 is secured under insert 4. EFFECT: enhanced reliability. 4 cl, 1 dwg
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