SU1630655A1 - Device for separation of seed pile - Google Patents

Abstract

The invention relates to air-lattice cleaning devices and serves the purpose of increasing productivity and reducing grain losses by providing the separation elements with additional transverse-vertical oscillatory movements. A device for separating a heap of grain includes separation elements in the form of a transport (page) board 2, the upper 8 and the lower 9 sieves, installed respectively on the suspended mills 1.7 and b, and a fan. Mills are equipped with a common drive. Separation elements 2, 8, and 9 are hinged along their longitudinal axes relative to their mills 1, 7, and 6, and each is equipped with a separate additional drive, 1 Cp. F., 6 sludge.

Description

Fig.b

FIELD OF THE INVENTION The invention relates to agricultural machinery, in particular to air-air cleaning devices for mobile and stationary threshers.

The purpose of the invention is to increase productivity and reduce grain losses by providing the separation elements with additional vertical-vertical oscillatory movements.

FIG. 1 shows the scheme of the proposed separation device; FIG. 2 is a diagram of the oscillations of the transport (page) board and the upper sieve; Fig. 3 is a diagram of additional oscillations of the upper and lower lattice; Fig. 4 is a kinematic diagram of the drives of the mechanisms of the device; Figures 5 and 6 show the layout of autonomous asynchronous drives.

A device for separating a heap of grain includes a mill 1 with a transport board 2, a finger grid 3, a grain 4 and a large 5 screw, a lower 6 and an upper 7 sieve mills with an upper 8 and lower 9 sieve, an extension of the upper sieve 10, a front suspension 11, crankshaft 12, connecting rod 13, double-arm lever 14 of the main drive of the device, rear suspension 15 of the lower sieve mill 6, upper suspension 16 of the upper sieve mill 7. The mills are driven from the crankshaft 12 by the connecting rod 13 acting on the hinge 17, being the axis of the hinge with The joint of the mill 1 of the plank board, the upper sieve mill 7 and the lever 14. The lower sieve mill 6 is installed in the hinge 18 of the two shoulders of the lever 14. The sleep board 1 is mounted on the mill 1 in the hinges 19 and 20 along its longitudinal axis and is kinematically connected 21 with front suspension 11, which provides synchronous oscillations of the bottom plate 1 relative to mill 2. The upper 8 and lower 9 sieves are similarly installed in the hinges 22 and 23, 24 and 25, respectively, in the upper and lower sieve mills. The upper 8 and lower 9 sieves are kinematically connected, respectively, to a tight 26 with a suspension from the upper sieve 16 and to a tight 27 with a suspension from the lower sieve 15. The sieve is blown with air flow from the fan 28.

The hinges 26 and 27 are hinged to the suspensions 15 and 16 so that the sieves oscillate in opposite directions, and the length of the kinematic links can vary in a known manner to regulate the amplitudes of the oscillations. The same applies to the page board drive. The drive of the string board 2 and sieves 8 and 9 can be additional and autonomous, synchronous, from the longitudinal oscillatory system, i.e. transverse vertical lashing movements can be synchronous (Figures 2-4) with longitudinal-vertical movements from one drive and asynchronous (Figures 2, 5 and 6) with variable frequency and amplitude of oscillations from a separate autonomous electric, mechanical or hydraulic drive installed between the mill and the separation element, or due to kinematic connections with the general drive of the mills separation elements.

An asynchronous separate drive in oscillation of the page board 2 relative to its mill 1 includes a hydraulic (or electric, etc.) engine 29 with a crank 30 and a connecting rod 31 connected to the bracket 32 of the page board 2. The bracket 32 has several openings for changing amplitude circular oscillations of the page board 2 in the hinges 19 and 20 or may have an oval (oblong) hole for the same purpose (Fig. 5).

Figure 6 shows asynchronous autonomous drives in oscillations of the upper sieve 8 relative to the mill 7 and the lower sieve 9 relative to the mill 6. The drive of the upper sieve 8 includes a hydraulic (electric, etc.) motor 33 installed on the mill 7 with a crank 34 and a connecting rod 35 connected to the upper sieve bracket 36. The lower sieve drive 9 relative to the lower sieve mill 6 includes a hydraulic (electric, etc.) motor 37 with a crank 38 and a connecting rod 39 connected to the lower sieve bracket 40 9. Brackets 32, 36 and 40 have one construction and purpose. The work of separation elements 2, 8 and 9 under the influence of their actuators is similar to the work of crank-connecting rod mechanisms, while the separating elements perform circular oscillations, respectively, in hinges 19, 20, 22, 23 and 24, 25

When using an autonomous asynchronous drive (Fig. 6) of the separation elements, each of them oscillates autonomously with its characteristic frequency (sleep board 2, top 8 and bottom 9 sieves) frequency and amplitude of vibrations, which contributes to improving the quality of the separator. The technological process at the same time completely coincides with the process performed by the separator with a common synchronous drive and kinematic connections of the separation elements with the suspensions of their mills (Fig. 4).

A device for separation with a common synchronous drive and kinematic connections works as follows. By changing the parameters of kinematic connections, it is possible to achieve individual oscillation amplitudes of the separation elements inherent in autonomous drives. Achieving different oscillation frequencies of the separation elements when using autonomous drives does not change the process.

During rotation, the crankshaft 12 rotates 13 through the hinge 17 of the lever 14, reciprocating oscillatory movements to the board mill 1, the upper grating mill 7 and the lower grating 6 installed in the lower hinge of the lever 14. This yoke 21 rotates the page board 2 in one direction or another relative to its mounting points 19 and 20. Similarly, the upper sieve is rotated with 8 tons of 26 from the suspension 16 and the lower sieve of 9 against 27 from the suspension 17. In this case, the mass of the pile entering the page board 2, under the influence of longitudinal-vertical and transverse-vertical oscillations, makes complex spatial displacements . In the projection on the horizontal plane, the trajectories of the mass are close to a sine wave or to a zigzag motion. This significantly increases the separation path. In the projection on the vertical axis, the mass makes vertical and longitudinal movements, also close to a sinusoid or zigzag movement, but undergoes periodic compression by shaking, which increases the separation capacity.

When a pile arrives at the finger grid 3, through its fingers, the grain-enriched part of it is poured onto the sieve 8, and the straw player part goes off the fingers and enters the enriched layer. The mass that enters the sieve, under the influence of the air flow from the fan 28, passes into a fluidized state. and is subject to oscillatory effects as described. In this case, the grain passes both through the straw screen and through the sieve 8, entering the lower sieve 9. The grain cleaned on the sieve 9 goes to the grain auger 4. The untreated parts of the ears are separated on the extension of the upper sieve 10 and fed to the ear auger 5.

The mass entering the sieve of the grain, in addition to the usual longitudinal-vertical oscillatory effects, is subjected to additional transverse-vertical oscillatory effects. In this case, in the vertical plane, a greater impact on the mass occurs.

along the edges of the sieves, which shifts it to the middle of the sieve to the zone of the intense part of the air flow. The convexity of the separation surface due to the lower relative to the surface of the sieve placement (Fig. 3)

installation hinges prevent mass unloading in the center from being pulled apart.

The intensity of separation is increased by increasing the path of movement of the heap in a sieve, transverse displacements of the heap, increasing the intensity of vertical impacts on the heap along the edges of the sieves, moving part of the heap from the edges of the sieves to the zone of intense air flow.

Claims (2)

1. A device for separating a grain pile, including separation elements in the form of a transport board and sieves, installed in the respective mills located on the suspensions, equipped with a common drive for oscillatory motion, and a fan, characterized the fact that, in order to increase productivity and reduce grain losses by providing the separation elements with additional transverse-vertical oscillatory movements, the separation the elements are installed along their longitudinal axes hinged relative to their mills and each are equipped with a separate additional drive. 2. The device according to claim 1, about tl and h and y sch e with the fact that some additional The drives are made in the form of kinematic connections connecting the separation elements with the suspensions of the respective mills. If & s "ABOUT. five s 00 cr with about 3 SL SL 7 19.20 32 8 S 36 35 22,23 FIG. five