RU2128420C1 - Threshing and separating unit - Google Patents

Abstract

FIELD: agricultural engineering. SUBSTANCE: threshing and separating unit has threshing cylinder enclosed in housing, deck mounted under threshing cylinder, separator and feeding window. Grain mass is delivered through feeding window and advanced along threshing cylinder and is further thrown under the action of centrifugal force onto separator made in the form of plates. Outer layers of grain mass are stopped by plates to facilitate additional relative movement of inner and outer layers of straw and, as a result, intensified separation of grain. EFFECT: increased efficiency, simplified construction and enhanced reliability in operation. 2 dwg

Description

 The invention relates to agricultural machinery, in particular, to selection threshers.

 Known threshing and separating devices of selection threshers according to the author's certificate of the USSR N 438389, cl. A 01 F 7/06, 1974.

 The disadvantage of this device is the low quality of threshing, grain loss due to unsatisfactory allocation of it from straw.

 Closest to the claimed device according to the technical solution is a threshing and separating device according to the copyright certificate of the USSR N 598587, class. A 01 F 7/06, 1978, used in the MSU-1 selection thresher.

 A significant drawback of such a device is that it does not provide for the complete separation of grain from straw, because the threshed cereal mass is in a compressed state all the time along the drum.

 This leads to grain losses in straw (state test protocol N 32-70-78 (1978) of the Central Black Earth Machine Testing Station).

 The aim of the invention is to provide a more complete selection of grain from straw in the process of advancing the mass along the drum and the exclusion of grain loss with straw.

 The goal is achieved by the fact that in the threshing and separating device, including the threshing drum, deck, guide elements, a separator is installed, made in the form of plates arranged with an inclination in the direction opposite to the movement of the threshed mass.

 A more efficient and faster separation of seeds from straw will speed up threshing and increase labor productivity.

 In FIG. 1 shows the proposed threshing and separating device; in FIG. 2 is a cross section.

 The proposed device includes a threshing drum 1, enclosed in a casing 2, with a deck 3 installed under the drum, a separator 4, a feed window 5.

 The separator is installed on the side of the drum on the casing and is a plate located with an inclined lower end towards the feed window.

 During operation of the threshing and separating device, the grain mass enters the feed window 5 and, moving along the drum 1, is periodically thrown to the separator 4 under the action of centrifugal force. In this case, the grain mass is loosened between the drum and the separator, which facilitates the passage of threshed grain through it, which the separator base rolls onto deck 3 regardless of the straw.

 A more efficient separation of grain from straw using a separator is also achieved by the fact that the plates inhibit the movement of the outer layers of the threshed mass to the exit from the threshing chamber.

 Due to this additional relative movement of the inner and outer layers of straw, more intensive grain separation occurs, and the slope of the plates located in close proximity to the exit of the straw from the threshing chamber contributes to the removal of seeds further from the exit, eliminating their loss.

 The use of breeding threshers with the proposed threshing and separating device will improve the quality of threshing, eliminate losses of breeding material.

Claims (1)

 A threshing and separating device, including a casing with a feed window, a threshing drum and a deck, characterized in that a separator is installed in it on the side of the drum, made in the form of plates rigidly fixed to the casing located with an inclined lower end towards the feed window.

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