RU2237394C2 - Working tool of machine for spreading of organic fertilizer - Google Patents

Abstract

FIELD: agricultural engineering.

SUBSTANCE: working tool has two blade-type horizontal disks enclosed in housings with discharge windows. Each discharge window is equipped with adjustable gates, two of said gates serving for setting required spreading width and two other gates serving for cutting-off of organic fertilizer flows from disks at points, where counter-current flows contact with one another without overlapping. Disks are equipped with even number of blades having ends bent in direction of rotation, with half of blades being arranged along diameters of disks and other half of disks being offset by predetermined value "a" toward side of rotation, in parallel with said diameters.

EFFECT: increased width and improved uniformity of spreading of organic fertilizer.

2 cl, 1 dwg

Description

The invention relates to agricultural machinery, and in particular to machines for applying organic fertilizers.

Known working body of a centrifugal fertilizer spreader, including a disk with spreading blades and a guiding protective casing in the form of a circular cylindrical belt with a variable height in the fertilizer sowing sector [1].

The disadvantage of this working body is the small working width when spreading fertilizers.

Closest to the invention in technical essence is the working body of the device for applying organic fertilizers to the soil, including a disk mounted on a horizontal shaft with blades deflected in the direction of rotation, and a casing with two windows and one damper [2].

The disadvantage of this working body is the low degree of uniformity of spreading onto the soil surface along the working width due to the resulting void between the flows when the casing is thrown into the windows.

The aim of the invention is to increase the width and uniformity of the spreading of organic fertilizers.

This goal is achieved by the fact that the spreading organ of the machine consists of two disks mounted on vertical shafts with blades bent at a certain angle in the direction of rotation, rotating towards each other.

Disks are limited by casings having one discharge window with two movable shutters. The size parameters between the feeding screw conveyors, the spreading discs and the ejection windows in the casings are set with the calculation of the most uniform sieving of fertilizers through the windows of the casings.

The drawing shows the proposed working body (top view).

The working body of the device for spreading organic fertilizers contains two rotating towards each other on the vertical shafts of the disk 1 and 2 with the blades 3 and 4 bent towards the rotation in the casings 5 and 6. Above each disk 1 and 2 there are feeding screw conveyors 7 and 8, the ends which are placed in the metering necks 9 and 10 with a common opening shutter 11. The housings 5 and 6 have one discharge window 12 and 13, each of which is limited by adjustable front side shutters 14, 15, 16 and 17, with the possibility of movement along the outer surface spine covers and fixing in position. The dampers 14 and 15 control the spreading width within uniformity, and the dampers 16 and 17 serve to cut off the organic fertilizer flows from discs 1 and 2 at points where the flows are in contact but not overlapping, which ensures uniform distribution of organic fertilizer in the middle part of the width scattering. Disks 1 and 2 have an even number of blades 3 and 4 with ends bent at a certain angle in the direction of rotation, moreover, half of them 3 are located strictly along the diameters of the disks, and the second half 4 is shifted in the direction of rotation relative to the diameters by size “a”. Since the blades are located unevenly and at different angles to the center of the disk, they capture different fertilizer masses and throw them at different distances, which increases the uniformity of the spread of organic fertilizer along the spreading length.

The working body of the machine for spreading organic fertilizers works as follows.

When the shutter 11 is open with screw conveyors 7 and 8, through the metering necks 9 and 10, organic fertilizer is fed to the rotating disks 1 and 2, where, under the action of centrifugal force, it moves through the blades 3 and 4 to the protective casings 5 and 6, and through the discharge windows 12 and 13 with adjusted flaps 14, 15, 16 and 17 to the required width and uniformity of spreading is scattered on the surface of the soil when moving the machine.

Sources of information

1. USSR copyright certificate No. 1037860 A, cl. A 01 C 17/00.

2. Copyright certificate of the USSR No. 1505459 A1, cl. A 01 C 3/06 (prototype).

Claims (2)

1. The working body of the machine for spreading organic fertilizers, containing screw conveyors in the metering necks with a shutter and mounted on vertical shafts blade disks in casings with windows, characterized in that, in order to increase the width and uniformity of the spreading of organic fertilizers, it consists of two disks rotating on vertical shafts in casings having one discharge window with two adjustable shutters. 2. The spreading body according to claim 1, characterized in that the rotating disks have an even number of blades with ends bent at a certain angle to the direction of rotation, with half of the blades fixed uniformly along the diameters of the disk, and the second half shifted in the direction of rotation parallel to the diameters of certain size “a”.