SU1678226A1

SU1678226A1 - Air-operated feed run

Info

Publication number: SU1678226A1
Application number: SU894764720A
Authority: SU
Inventors: Наталья Петровна Лобачевская
Original assignee: Азово-Черноморский Институт Механизации Сельского Хозяйства
Priority date: 1989-12-04
Filing date: 1989-12-04
Publication date: 1991-09-23

Abstract

Изобретение относитс к сельскохоз йственному машиностроению, в частности к пневматическим высевающим аппаратам посевных машин. Цель изобретени - повышение качества однозернового высева сем н . Аппарат содержит корпус 1 с семенной камерой 2, крышку 3 с вакуумной камерой 4 и сквозными отверсти ми 5, высевающий диск 6 с цилиндрическими присасывающими отверсти ми 7 и накладкой с выступами, в каждом из которых выполнены сообщающа с с присасывающим отверстием 1 сферическа расшир юща с чейка. Каждое сквозное отверстие 5 соединено с атмосферой через дроссель Имеетс зона 12 высева сем н, глубина h каждой чейки определ етс соотношением h vR2 - г - -R-sin (f, где R - радиус сферической поверхности чейки, г - радиус цилиндрического присасывающего отверсти , р- угол трени сем н о поверхность чейки При вращении диска 6 семена засасываютс в чейки по одному семени и транспортируютс в зону высева, перед которой они перемещаютс перед сквозными отверсти ми 5, дросселирование сообщенных с атмосферой полостей которых обеспечивает своевременный сброс сем н в зоне 12 высева безудара ихо корпус. 1 з п ф-лы, 6 ил (Л СFIELD OF THE INVENTION The invention relates to agricultural machinery, in particular, to pneumatic sowing apparatus of seeding machines. The purpose of the invention is to improve the quality of single-grain seeding. The apparatus includes a housing 1 with a seed chamber 2, a cover 3 with a vacuum chamber 4 and through holes 5, a sowing disk 6 with cylindrical suction holes 7 and a lug with protrusions, each of which has a spherical expansion joint with a suction hole 1 cell Each through hole 5 is connected to the atmosphere through a throttle. There is a 12 seeding zone, the depth h of each cell is determined by the ratio h vR2 - g - -R-sin (f, where R is the radius of the spherical surface of the cell, g is the radius of the cylindrical suction hole, p-friction angle of the seed on the cell surface. When the disk 6 rotates, the seeds are sucked into the cells of one seed and transported to the sowing zone, in front of which they are moved in front of the through holes 5, the throttling of which communicated with the atmosphere of the cavities ensures Modern resetting of seeds in a seeding zone of unstripped iho corpus. 1 sfl, 6 or (L

Description

фиг.FIG.

Фиг. 5FIG. five

Фиг.бFig.b

Claims

Claim

1. Pneumatic sowing device, comprising a housing with a seed chamber, a cover with a vacuum chamber, a metering disk mounted on a horizontal shaft with a pad provided with protrusions with cylindrical suction holes for seeds located concentrically relative to the axis of the disk, characterized in that, in order to improve the quality of single-grain sowing of seeds, the protrusions have a cylindrical shape and in each of them is made communicating with a cylindrical suction hole and expanding in st The seed chamber is defended by an ejaculatory cell, the side wall of which is in the form of a part of a spherical surface, and through holes are made in the cover in front of the seed seeding area, through holes located at the circumference of the centers of the suction holes, each of which is connected to the atmosphere through the throttle.

2. The apparatus according to claim 1, characterized in that the depth h of the cell is determined by the relation h <Vr ' ² - g ² - R -sin φ, where R is the radius of the spherical surface of the cell:

g is the radius of the cylindrical suction hole ^ y> is the angle of friction of the seeds on the surface of the cell.

Fig.Z ί

b- B fig A