SU1680004A1 - Axial threshing separating device - Google Patents

Description

FIG. one

The invention relates to agricultural machinery, in particular to the threshing and separating devices of combines with axial movement of the threshed mass.

The aim of the invention is to reduce the energy intensity of the process and prevent the straw fraction from twisting into bundles.

Figure 1 shows an axial milk-separating device with scourges located along a helix with a decrease in the angle of ascent and guides along a helix with an increase in the angle of ascent; Fig. 2 shows an embodiment of the device with a step change in the angle of elevation of the screw lines; Fig. 3 shows an embodiment of the device with the location of scourges in the threshing zone along the generatrix.

The axial threshing and separating device includes a tubular casing 1 (Fig. 1) with receiving A, threshing B and separating C zones. A rotor 2 is rotatably mounted inside the casing, on which the pests 3 are fixed. with decreasing step along the length of the threshing-separating device. On the inner surface of the casing 1, fasten guides L and 4, which are arranged along helical lines with an increase in the angle of their rise on each subsequent guide.

In the embodiment of the invention (Fig. 2), the pests and guides are located along helical lines, the elevation angles of which vary in steps. In this case, all the threshing and separating device can be divided into sections. So, in section D there is a segment of scourge 5 and a group of directors 4, in section E there is a segment of scourge 6 and a group of directors 7, in section F there is a segment of scourge 8 and a group of directors 9. At the same time, along the whole length of the threshing and separating devices must be provided

mutual arrangement of scourges and guides close to perpendicular.

In another embodiment of the invention (FIG. 3), pests 10 in the threshing zone

are located along the generatrix of the cylinder, and whips 11 in the separation zone - along a helix.

The device works as follows.

The mass to be processed is supplied to the receiving area A of the threshing-separating device, subjected to intense shock-grinding effect and carried away by the receiving elements of the rotor.

and casing in a helical motion. Most of the grain is threshed out. The transition from the receiving zone to the main zones — threshing B and separating C — under the action of the scourges 3 of the rotor and the guides 4 of the casing 1 continues to move at a relatively low axial speed in the direction it acquired in the receiving zone. This type of movement contributes to the high intensity of threshing and

separation of grain immediately at the exit from the receiving zone, and also excludes the possibility of straw twisting into bundles when passing from one zone to another along the entire length of the hammer separator.

Due to the continuous decrease in the angle of elevation of the helix of the scourge and an increase in the angle of elevation of the helical lines of the guides of the casing, the processed mass is

as the distance from the start of the threshing and separating device and the decrease of grain contained in it moves rapidly in the axial direction and at the end of the threshing and separating device is thrown

beyond it. With a high threshing rate and grain separation, such a threshing and separating device will have 1.4–1.6 times lower energy consumption and a steady flow of the technological process without twisting wet straw into bundles.

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FIG. 2

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Claims (3)

(54X57) 1. AXIAL THRESHING-SEPARATING DEVICE, comprising a tubular casing with a receiver, guides located along helical lines on its inner surface for axial movement of the mass, and a rotor installed in the casing, equipped with scourges located in the separating zone along the helix , characterized in that, in order to reduce the energy intensity of the process and prevent twisting of the straw fraction into bundles, the scourges on the rotor are located with a decrease in the angle of elevation of the helix, and will direct dissolved in the housing - with increasing angle of ascent in the direction from the inlet to the outlet of the device. 2. The device according to claim 1, in that the fact that the pests of the rotor and the guides of the casing are located with a step change in the angles of their rise. 3. The device pop, 1, which is distinguished by the fact that the scourges of the rotor in the threshing zone are located along the generatrix of FIG. /