SU728774A1 - Threashing and separating apparatus - Google Patents

Description

I

The invention relates to agricultural production, primarily to casting machines.

A device for threshing and separation of castor bean is known, which includes a threshing machine with a solid deck and grid cleaning 1.

However, in such a device, when re-threshing castor beans, immature pods circulate endlessly, which drastically reduces the efficiency of the device and the cleaning of the milky mass.

Closest to the proposed in-. The device includes a threshing machine with a blank deck. The penieTo will clean and direct (.) to supply the threshed mass to the cleaning, made in the form of a casing and provided with windows located along its edges, as well as ribs 2 that diverge from its middle.

However, in case of threshing of castor beans, increased humidity does not ensure effective separation of the seedlings from green boxes, which reduces the efficiency of the device.

The aim of the invention is to increase the efficiency of purification of castor bean maturation by withdrawing non-threshing products.

This is achieved by the fact that the cleaning grid in the longitudinal direction is made convex in its middle part towards the registrant.

Such an embodiment of the device ensures the effective separation of the ripened castor bean boxes from the green ones due to their different flowability, and sent the latter for repeated threshing.

FIG. 1 schematically shows a threshing and separating device; in fig. 2 is cracked with the delimiting strips of section A and A in FIG. one; in fig. 3 - a guide with cutters, view along arrow B in FIG. I; on (|) 4 is the same, view along arrow B in FIG. 3

The device contains a P1nek .1 with a guide plate 2, a threshing drum 3 with a blank deck 4, a guide 5 equipped with cutters 6, a sieve 7 equipped with limiting bars 8, an aspiration chamber 9, two exhausters K), an aspirator chamber with louver 1 1, and also the unloading screw 12.

The sieve 7 of cleaning in the longitudinal direction is made in the middle part of it in the direction of the guide 5 (with slopes from the middle part to the edges, mainly 4-6 °). Bounding strips 8 separate the sieve sections which are extreme in width. Due to the sieve slopes, the threshing along with the green boxes moves along the heme with a significant cross-section), ennem, providing for a single pass the movement of mass to the limiting bars. Restrictive bars prevent the mass from reaching the extreme parts of the slat after a single pass and ensure that the mass is fed back to the threshing machine for re-threshing.

The guide 5 is made in the form of a casing and has windows 13 located at the side of the device, through which products are threshed after re-thresh are discharged from the device along the tapping channels 14. the direction of its movement, providing the supply of mass to the extreme parts of the cleaning sieve.

A pile of mature and green bolls enters the screw 1 and with the aid of the flap 2 is sent to the threshing machine. The threshing drum 3, interacting with deck 4, threshes bollards along the ground, and unfinishedly, together with the green bolls, throws along the guide 5 onto the cleaning sieve 7. The presence of slopes on the sieve provides an active, continuous displacement of mass as it moves along the sieve.

The passage fraction — threshed seeds — falls through the holes of the slat, and the gathering fraction, including the green boxes, rolls down to the border strips 8 again into the threshing machine for repeated threshing. Re-threshed, chopped by the threshing machine as

two streams, on their way along the guide, they encounter cutoffs b, which divert these flows to the extreme sections of sieve 7, bounded by slats. In the extreme parts of the sieve, threshed seeds (aisle fraction) fall through the holes, and the green boxes (descendent fraction) re-enter the threshing machine and through special windows of the distributor and channels 4 are ejected from the device. A heap separation takes place in the aspiration chamber 9. A light portion of it is removed by exhausters 10. The cleaned seeds, which are percent through the sieve holes 7, are removed from the device by edema 2.

Making the cleaning sieve convex in the core direction in its middle part in the direction of the guideline will allow to eliminate the circulation of immature casting beans boxes in the device, thereby improving the cleaning efficiency of matured castor beans.

Claims (2)

1. Author's certificate of the USSR, N 217107, cl. And Oi F 11/00, 1966. 2. USSR author's certificate No. 537649, cl. A 01 F 11/00, 1977 (prototype). FIG.