SU1251821A1 - Thrashing device - Google Patents

Description

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The invention relates to the mechanization of threshing of agricultural plants, mainly to installations for threshing large volumes of corn cobs.

The aim of the invention is to increase productivity while reducing the injuries of grains.

Figure 1 shows the device, a general view; figure 2 is the same longitudinal section.

The device for threshing corn cobs contains a loading bucket 1 conveyor 2, a vortex tube 3, having an internal 4 and an outer 5 cylinders, screw cavities 6, a cone 7 and a discharge opening 8, the outer cylinder having an inlet 9 docked to the ejector 10 by means of nipple 11 The nozzle has an inlet nozzle 12, a working nozzle 13, while the discharge opening 8 is oriented towards the grid 14, which passes the grain into the container 15 and guides the rods into the container 16.

The device works as follows.

The ejector 10 is supplied with compressed air at a pressure of 0.1-0.2 MPa. Through the working nozzle 13 it goes out at high speed to the pipe 11, where a common flow is formed, which through the inlet 9 is fed into the cyclone 3. Since the axis of the ejector 10 forms an angle 90 with the diameter of the outer cylinder 5, the air enters the cyclone along i, the tangent to the inner surface of the outer cylinder. Upon encountering the walls of the cylinder, the flow immediately twists. In the cone 7, the swirling of air occurs from a larger radius to a smaller one, and this causes an increase in the linear velocity of the flow, which through the inner cylinder 4 leaves the cyclone. At this time, from the ladle 1, the corncobs are fed through the conveyor 2 to the ejector 10. The conveyor belt 2 is located on the same level with the ejector 10, which allows the latter to capture the cobs through the inlet nozzle I2 and feed them into the cyclone 3. In the pipe nozzle II, the total flow is at an angle of the RS 36-AO, which makes it possible to communicate the cob forward and tangential co put yup (not accelerate. Caught up by the flow of energy, the ear of

at the exit of the ejector 10, the angular velocity is 240-300 rpm. An entrance with such angular speed in the auger 6 of the cyclone 3, an ear of blow- 5 s about the elastic coating of the outer

the cylinder bounces off of it, strikes against the elastic coating of the inner cylinder, etc. This allows partial threshing of grain.

on and break the packaging of the grains by all

mu cob. As a result of a series of blows, the cob loses its kinetic energy and as soon as it becomes less than the energy of the air.

flow, the latter podhvvatgoet him and the centrifugal force completes the quality of threshing grains from the cob. Grains and rods, passed through the walls of the cylinders, describe the spiral and

rushing to the discharge opening 8 and then to the grid 14. The grid 14 passes the grain into the container 15, and sends the rods into the container 16. By-products that appear during the threshing process are sucked in by the air flow and exit the cyclone 3 through the cylinder four.

The holes in the fixed cyclone auger facilitate the removal of grains from the working area of the threshing apparatus, which are separated from the cob in the initial stage of its threshing. . This avoids additional interaction in the work area.

the apparatus of the grains among themselves and their interaction with the unwetted ears.

Performing a threshing machine in the form of a two-stage cyclone with a fixed screw allows the powerful peripheral flow to be used for intensive threshing of the cob against the cyclone walls and the screw surface, and also due to centrifugal forces, the grain is separated from the rods during the threshing process, while the cone located below cyclone, converts the rotational velocity component to a linear one, since the radius decreases sharply, and the direction of the linear component is parallel to the axis of symmetry of the inner cylinder, along which otok energy carrier, not doy- d to the vertex of the cone, is directed from the cyclone, taking the threshing side products. Grain and rods are not captured by cyclo31251

because the centrifugal forces press them against the walls, and when they get into the cone under the force of gravity, they come out of the cyclone. This allows the proposed threshing device to be used indoors, and the threshing byproducts are immediately collected during the threshing process in the precipitating chambers.

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Spin the flow of energy in. the flow part of the ejector at an angle of ot 36-40 ° allows the cobs, with an average mass of 0.2 kg, to communicate the optimum angular velocity of 240-300 rpm, which allows separation of the grains from the cob during the primary interaction of the cob with the walls of the cyclone 30- 40%.

air

Fig 2

Editor I. Shulla

Compiled by P. Staritsky

Tehred V. Kadar Proofreader L. Patay

Order 4439/1 Circulation 679 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk iab. d. 4/5

Production and printing company, Uzhgorod, Projecto st., 4

Claims (1)

THRESHOLD DEVICE, including a threshing apparatus made in the form of a vortex tube with a pneumatic loading device made in the form of a nozzle oriented tangentially to the inner surface of the vortex tube, and an unloading window, characterized in that, in order to increase productivity while reducing injuries, the threshing apparatus equipped with a fixed screw installed coaxially inside it, made in the form of a cylinder with perforated blades, the nozzle of the loading device is equipped with an ejector for I create a vortex flow of energy carrier in the pipe, the inner surface of the vortex tube and the outer surface of the screw cylinder covered with elastic material. SU „„ 1251821 A1 125187 '