SU1375163A1 - Screw sowing apparatus - Google Patents

Abstract

The invention relates to agricultural machinery, in particular to the working bodies of machines for spreading bulk materials, in particular mineral fertilizers. The purpose of the invention is to improve the uniformity of seeding. The screw apparatus contains a casing 1 with a screw 2. The sowing holes 3 are made in the form of a parallelogram, the acute angle of which is equal to the elevation angle of the screw auger. The overlays 3 are overlapped with a comb flap 4, the crests of which are arranged with a pitch equal to the pitch of the holes and are inclined towards the casing at an angle equal to the elevation angle of the auger helix. On the edge of the screw surface of the screw installed cleaners with elastic elements. The material is fed into the housing and, stirred, and clamped thereto by screw 2, is distributed along its entire length. Through the sowing holes 3, the material is ejected from the casing 1. The angle of displacement of the center of gravity with the specified execution of the valve 4 and the holes 3 will be constant within one auger turn, which will reduce the pulsation of the seed. 1 hp f-ly, 7 ill. (L oo ate O5 with Figure 1

Description

The invention relates to agricultural machinery, in particular to the working bodies of machines for scattering bulk materials, particularly mineral fertilizers.

The purpose of the invention is to improve the uniformity of seeding.

FIG. 1 shows a screw seeding machine, a general view; in fig. 2 is a section A-A in FIG. one; in fig. 3 is a view B in FIG. 2; in fig. 4 shows a section B-B in FIG. 3; in fig. 5 - cleaner with an elastic element; in fig. 6 is a view of FIG. five; in fig. 7 is a section d-d in fig. 6

Screw sowing machine contains a casing 1, made in the form of a cylinder with a screw 2 located inside it, providing material supply in opposite directions from the place of loading. The sowing holes 3 of the casing 1 are made in the form of a parallelogram. The smaller diagonal of the sowing holes 3 is perpendicular to the generatrix of the casing 1, and the acute angle is equal to the elevation angle of the screw line of the screw 2, at the flap 4 the edge is made comb. The crests of the flap 4 are made in increments.

screw helix line 2, and a smaller diagonal, which is perpendicular to form the casing 1 (Fig. 3). With the specified location of the sowing holes 3 tape w

5 2, moving the material, covers them along the entire length, practically without affecting their shape. The center of gravity of the bulk material moves along the generatrix of the skin 1. This means that the angle of displacement of the center of gravity of the bulk material is constant in

 within one turn of the tape auger 2. This reduces the pulsation of seeding, since at angular speeds of the screw 2 less than 30 s

according to the Frund Criterion - -, strength

15 tons of tin are predominant over the centrifugal forces of inertia and the outflow of material is gravitational. The mutual arrangement of the valve 4 and the housing 1 must be ensured so that the sowing holes are located in the depressions of the valve 4 (Fig. 3). When the apparatus is in operation, the cleaners 6 with elastic elements 7, rotating with the screw 2, prevent the inner surface of the casing 1 and the sowing holes 3 from the casing of the sowing holes 3. The height is 25 pieces of material (Fig. 4). It contributes

the crests of the flap 4 are equal to the smaller diagonal of the sowing holes 3. In addition, the crests are inclined to the generator of the casing 1 at an angle equal to the elevation angle of the screw line of the auger 2. Along the screw surface of the screw 2 with screws 5, there are b cleaners with elastic elements 7. are plates in the form of a part of a ring, have openings 8 for fastening the tape of the screw 2 and the grooves 9 for placing the elastic elements.

The device works as follows.

The material is fed inside the casing 1 to the screw 2, by which it is distributed in opposite directions along the entire length of the casing 1 at the same time, through the sowing holes 3 is ejected from the casing 1 and distributed over the field.

For uniformity of metering, such a shape and arrangement of the sowing holes 3 is necessary, when the projection of the center

increase in seeding uniformity, since excess material does not accumulate in the casing.

Claims (2)

Invention Formula 30 1. A screw metering device containing a hopper with metering devices, under which a screw is installed, enclosed in a casing, in the lower part of which are sowing holes and a valve blocking them, characterized in that, in order to reduce uniformity of sowing, facing the sowing holes the flap edge is made of a comb shape with a tongue of crests equal to the pitch of the sowing holes, and the side surface of the crests is inclined to the longitudinal axis of the casing at an angle equal to the elevation angle of the auger helix; Verstov made in form of a parallelogram, the acute angle which equals the angle of inclination of the side surface of the ridges, and the smaller diago40 The body of the bulk material, which is located perpendicularly forming the casing in the interturn space of the screw 2, is displaced along the same line as the centers of the sowing holes 3. The sowing holes 3, made in the form of a parallelogram with an acute angle equal to the corner of the bedhead, with cleaners with elastic elements installed along the edge of the screw surface of the screw. 2. An apparatus according to claim 1, characterized in that the elastic members are made in the form of brushes. screw helix line 2, and a smaller diagonal, which is perpendicular to form the casing 1 (Fig. 3). With the specified location of the sowing holes 3 tape w 2, moving the material, covers them along the entire length, practically without affecting their shape. The center of gravity of the bulk material moves along the generatrix of the skin 1. This means that the angle of displacement of the center of gravity of the bulk material is constant in  within one turn of the tape auger 2. This reduces the pulsation of seeding, since at angular speeds of the screw 2 less than 30 s according to the Frund Criterion - -, strength 5 tons of tin are predominant over the centrifugal forces of inertia and the outflow of material is gravitational. The mutual arrangement of the valve 4 and the housing 1 must be ensured so that the sowing holes are located in the depressions of the valve 4 (Fig. 3). When the apparatus is in operation, the cleaners 6 with elastic elements 7, rotating with the screw 2, prevent the inner surface of the casing 1 and the sowing holes 3 from scattering the material (Fig. 4). It contributes increase in seeding uniformity, since excess material does not accumulate in the casing. Invention Formula 0 1. A screw metering device containing a hopper with metering devices, under which a screw is installed, enclosed in a casing, in the lower part of which are sowing holes and a valve blocking them, characterized in that, in order to increase uniformity of sowing, facing the sowing holes the flap edge is made of a comb shape with a tongue of crests equal to the pitch of the sowing holes, and the side surface of the crests is inclined to the longitudinal axis of the casing at an angle equal to the elevation angle of the auger helix, while sowing from ERSTU made in form of a parallelogram, the acute angle which equals the angle of inclination of the side surface of the ridges, and the smaller diago0 ground perpendicular to the shell casing screw, and on the edge of the screw surface of the screw installed cleaners with elastic elements. 2. An apparatus according to claim 1, characterized in that the elastic members are made in the form of brushes. 1375163 / 1- / 1 / 2. .ББ Fig.Z Fy Type G L 3 G / umm k d 6 FIG. 7