RU2520006C1 - Working element of centrifugal fertiliser distributor - Google Patents

Abstract

FIELD: agriculture.

SUBSTANCE: working element of centrifugal fertiliser distributor comprises a cone disc 1 having blades 2, 3, one of which is shorter and one is longer. The blades have longitudinal partitions and the bevelled outer edge. The total height of the blades corresponds to the distance travelled by the flow of fertiliser falling from the metering device during a complete revolution of the working element. The height of each blade is proportional to the angle between the blades, measured in the direction of rotation.

EFFECT: increased uniformity of fertiliser application.

4 dwg

Description

The invention relates to agricultural machinery, and in particular to the working bodies of centrifugal spreaders of fertilizers and other bulk materials.

Known working body of a centrifugal fertilizer spreader containing a flat centrifugal disk with hinges and adjusting bolts mounted on it at different angles of inclination relative to the surface of the disk with segments with blades, and the segments are made with the possibility of changing position relative to the radial direction and are additionally equipped with blades with the possibility of reinstallation [Patent RU 2432731, IPC A01C 17/00, published November 10, 2011, Bull. No. 31].

The disadvantage of this working body is the complexity of the design and the complexity of its settings, due to the need for individual settings of the three parameters of each of the twelve segments with blades.

The closest in design is a working body containing one shorter and one longer throwing blade, and shorter throwing blades sprinkle mainly only the area of the working width, and each longer throwing blade sprinkles essentially the area adjacent to the area of the working width with a small the zone of overlapping fans of the spread created by long and shorter casting blades [Patent RU 2270550, IPC АСС 17/00, published 02.27.2006, Bull. No. 6].

The disadvantage of this working body is the need for processing with a large overlap of adjacent passages of the unit, up to double. This is due to the fact that the working body creates two scatter fans with different radius and direction, so the resulting scatter picture has the form of a triangle or trapezoid.

An object of the invention is to increase the uniformity of fertilizer application and increase the working width in the simplest way.

The uniformity of fertilizer application is achieved by processing small sections of the spread width by individual scatter fans independently of each other.

The increase in the spread width is achieved by the fact that the overlap of adjacent passages is minimized by obtaining a spread pattern close to rectangular.

The technical result is achieved by the fact that the working body contains a conical disk with two blades of different lengths mounted on it with longitudinal partitions and with beveled outer edges, and the total height of the blades corresponds to the distance traveled by the fertilizer flow falling from the dosing device during a full revolution of the working body, and the height of each blade is proportional to the angle between the blades, measured in the direction of rotation.

This design allows you to divide the fertilizer flow into portions during its contact with the working body and direct each portion to the corresponding section of the spread width. This is achieved by the fact that the total height of the blades, equal to the distance traveled by the fertilizer flow falling from the dosing device during a full revolution of the working body, ensures that fertilizers reach the working body blades evenly over the entire height of the blades, the longitudinal partitions of the blades divide the even fertilizer flow into equal portions and facilitate separate movement of portions along individual channels, the beveled edges of the blades provide fertilizer descent from individual channels at different speeds and in different directions eniyah. As a result, the working body creates several small fans of scatter, the number of which corresponds to the number of channels of the blades, each of which covers a separate section of the width of the scatter.

The essence of the invention is illustrated by drawings:

Figure 1 - working body top view;

Figure 2 - scapula front view;

Figure 3 - profile of the scapula (section aa);

Figure 4 - diagram of the fans of the spread.

The working body of the centrifugal fertilizer spreader consists of a conical disk 1 and two blades 2 and 3 of various lengths with beveled edges. The chamfered edge of the blades 2 and 3 is made at the same angle, and the long edge of the short blade is equal to the short edge of the long. The blades 2 and 3 are mounted on the disk 1 at two points with the possibility of changing their position relative to the radial direction.

The working body of the centrifugal fertilizer spreader operates as follows. Fertilizers falling from the dosing device in a continuous stream are picked up by blades 2 and 3, mounted on the disk 1, and are divided by partitions into several portions, each of which moves under the action of centrifugal force along a separate channel along the blade. Due to the total height of the blades 2 and 3, equal to the distance traveled by the fertilizer flow falling from the dosing device during a full revolution of the working body, the fertilizer gets on the blades 2 and 3 of the working body evenly over the entire height, and the movement of fertilizers along the conical disk 1 is also excluded. Due to the equal conditions of movement of the fertilizer, they move identically in each channel, until they reach the beveled edge of the shortest channel. After the fertilizer leaves the short channel, the fertilizers continue to move in the following channels, when the fertilizers reach the second beveled edge along the second length of the channel, the working body turns at a small angle, and the fertilizers gain high speed, thus creating a fan with a large radius in the other direction. The descent of fertilizers from the subsequent channels is similar.

As a result of the work of the working body, the field is covered with small fans of scatter, providing a uniform portioned feed of fertilizers to individual sections of the working width, which helps to obtain a spread pattern close to rectangular.

Claims (1)

The working body of the centrifugal fertilizer spreader containing a conical disk having blades, one of which is shorter and one longer, characterized in that the blades have longitudinal partitions and a beveled outer edge, and the total height of the blades corresponds to the distance traveled by the flow falling from the metering device fertilizers during a full revolution of the working body, and the height of each blade is proportional to the angle between the blades, measured in the direction of rotation.

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