JPH04604B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for sorting threshed grain in a threshing machine mounted on a combine harvester or of a stationary type.

[Problems to be solved by conventional technology and invention]

Conventionally, this type of sorting device has been used, for example, in
-As described in Publication No. 41048, etc., since it is a swinging type, it not only produces large vibrations and noise, but also
This increases the size and weight, and there are also problems such as difficulty in cleaning the crimp net in the handling room if it becomes clogged.

An object of the present invention is to provide a sorting device that solves this problem.

[Means for Solving the Problems] In order to achieve this object, the present invention incorporates a handling trunk in a handling chamber within the machine frame, a crimp net is stretched at the lower part of the handling chamber, and a crimp net is installed in the lower part of the machine frame. A case formed separately from this is disposed facing the crimp net, and a rotary cylindrical sorting body and a suction fan are provided in the case and supported by the case, and The outer peripheral surface of the cylindrical sorting body is formed into a porous shape so that the grains can be sorted from the crimp net, and furthermore, a grain receiving gutter is disposed at the lower part of the cylindrical sorting body, while The case is configured to be attached to the machine frame so as to be openable and closable.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 indicates a machine frame of a threshing machine,
In the handling room 2 defined inside the machine frame 1, there is an axis 4.
A feed chain 5 is provided on the upper side of the machine frame 1 to convey the grain from the grain inlet to the handling chamber 2.

A crimp net 6 is stretched from the lower part of the handling barrel 3 to the side opposite to the feed chain 5, except for the dust inlet on the side opposite to the grain culm entrance to the handling chamber 2.

Reference numeral 7 denotes a case formed separately from the handling room 1, which is disposed on the side so as to face the crimp net 6, and is provided so as to be openable and closable with respect to the machine frame 1, as will be described later. There is.

A cylindrical sorting body 11 that sorts the threshed grains from the crimp net 6 and the dust feeding port, and a suction fan 8 that generates suction air passing through the cylindrical sorting body 11 are arranged in the case 7, Moreover, it is supported with respect to the case 7.

Reference numerals 9 and 10 denote a pair of flow down plates that guide the threshing from the crimp net 6 and the like to the upper part of the outer peripheral surface of the cylindrical sorting body 11 over its entire length; One of the flow plates 9 is
In the lower part of the handling chamber 2 in the machine frame 1, the upper end is located at the lower end of the crimp net 6, and the lower end is arranged in an inclined shape so as to look into the outer peripheral surface of the cylindrical sorting body 11, and the other downstream The plate 10 is connected to the case 7.
The lower end of the flow plate 10 is placed so as to face the crimp net 6 inside the flow plate 9.
Place it so that it faces the bottom edge of.

The suction fan 8 is a cross-flow type suction fan disposed substantially horizontally along the axis 4 of the handling cylinder 3 at the lower part of the other flow down plate 10, and the length of the blade 8' in the axial direction is Cylindrical sorting body 11 described later
The dust exhaust is approximately the same as the length in the direction of the axis 14 of the case 7, and is provided so as to suck air from the intake port 15 in the machine frame 1 at the bottom of the handling room 2 and open downward on the side of the case 7. It is configured to be discharged from the discharge passage 16 to the outside of the machine.

Reference numeral 11 is disposed substantially parallel to the axis 4 of the handling cylinder 3 at the lower part of the pair of flow down plates 9 and 10, and is formed to have a length that is approximately the same as or longer than the length of the handling cylinder 3. It is a double cylindrical sorting body, and the outer circumferential surface of the outer cylinder 12 is formed into a porous shape such as a coarse mesh or perforated plate through which threshed grains pass but large straw waste does not pass through, while the inner cylinder 13 A cylindrical sorting body 1 constituted by both inner and outer cylinders 12 and 13, the outer peripheral surface of which is formed into a porous shape such as a fine mesh mesh or perforated plate through which grains do not pass.
1 is disposed on the suction side of the suction fan 8 with its rotating shaft 14 substantially parallel to the axis 4 of the handling cylinder 3, and its outer cylinder 12 is arranged on the outer circumferential surface of the outer cylinder 12. The part facing the crimp net 6 rotates at an appropriate speed in the direction of moving toward the suction side of the cross-flow type suction fan 8, while the inner cylinder 13 is rotated at an appropriate speed, while the inner cylinder 13 is separated from the outer cylinder 12. It is configured to rotate in the opposite direction at an appropriate speed.

Reference numeral 17 denotes a grain receiving gutter which is inclined downward from the lower part of the suction fan 8 to the lower part of the sorting body 11 in the case 7, and is arranged upwardly from the lowest point in the direction of the inlet port 15. Grain catcher 1
A screw conveyor 18 extending along the axis of the cylindrical sorting body 11 is provided at the bottom of the cylindrical sorting body 11, and the first grain is machined through a grain lifting pipe or the like connected to the end of the grain receiving trough 17. Configure to take it outside.

The case 7 is pivoted so that it can freely rotate outwardly of the machine frame 1, with the axis 19 of the screw conveyor 18 as the rotation center, and the upper end of the case 7 The structure is such that the parts are detachably fastened to the machine frame 1 using bolts 22 or the like.

Furthermore, on the side of the machine frame 1, a rotary dispersion spiral 20 that fits into a gutter provided in the middle of the downstream plate 10 attached to the case 7 is attached to the cylindrical sorting body 1.
It may be arranged substantially parallel to the axis line of 1.

In this configuration, the grains and culm cuts etc. threshed by the handling cylinder 3 from the grain culms being transported in the feed chain 5 slide down the upper surfaces of the flow plates 9 and 10, and are shaped into a cylindrical shape by the dispersion spiral 20. The grains are transported in the length direction of the sorting body 11, and the amount of grains removed therefrom becomes approximately uniform along the length direction of the cylindrical sorting body 11.

In this way, the outer cylinder 1 in the cylindrical sorting body 11
The grains and dust of the threshed grains guided to the outer circumferential surface of the outer tube 12 fall along the outer circumferential surface of the inner tube 13 through the holes in the outer tube 12, while large straw debris adheres to the outer circumferential surface of the outer tube 12. The particles are carried to the suction side of the suction fan 8, where they are separated from the outer peripheral surface of the outer cylinder 12 by the suction wind blowing from the inner diameter side of the cylindrical sorting body 11, and are sucked into the suction fan 8. ejected from the aircraft.

On the other hand, the dust that falls into the inside of the outer cylinder 12 falls on the inner diameter side through the hole in the inner cylinder 13, is carried by the suction wind passing through the inner cylinder 13, and is discharged outside the machine in the same way as the straw waste. On the other hand, as the inner cylinder 13 rotates, the grains fall along the outer periphery of the outer cylinder 12.
The grains are collected in the first grain receiving trough 17 and taken out of the machine through the holes.

Note that if longitudinal fins 21 are provided on the outer peripheral surface of the inner cylinder 13 along the rotation axis 14 so as to protrude radially outward at appropriate intervals in the circumferential direction, the inner cylinder 13 will not fall onto the outer peripheral surface of the inner cylinder 13. The grains and dust are supported by the fins 21 and do not fall freely, but move downward at approximately the same speed as the circumferential speed of the inner cylinder, which allows them to stay on the outer circumferential surface of the inner cylinder 13 for a longer period of time. The accuracy can be further improved by increasing the time.

Furthermore, in the present invention, the inner cylinder 13 of the cylindrical sorting body 11 in the above embodiment is omitted, and the same effect can be obtained even if the sorting body has only a porous outer cylinder through which grains can pass through without straw waste. Grain sorting is possible.

[Action/effect of the invention]

As described above, according to the present invention, fine dust and large and light straw waste are separated from the inner diameter side of the cylindrical sorting body by the wind sucked by the suction fan through the porous holes on the outer circumferential surface of the cylindrical sorting body. It can be separated into separate paths from the outer diameter side, has extremely good sorting performance with grains, does not require a large planar area unlike the conventional rocking type sorting device, and the cylindrical sorting body Since it only needs to be rotated and the driving device is simple, the sorting device can be made much smaller and lighter, and vibration and noise can be significantly reduced.

Moreover, the cylindrical sorting body and the suction fan are provided in a case so as to be supported by the case,
The case is formed separately from the machine frame including the handling room and placed so as to face the crimp net of the handling room, and the case is provided so as to be openable and closable with respect to the machine frame.
By opening the case from the machine frame, the inside of the machine frame is opened so that the crimp net can be seen, and the outer peripheral surface of the cylindrical sorting body is also exposed. In the event of clogging, it is extremely easy to clean that part, and it is also easy to replace these parts, making maintenance and inspection of the threshing machine sorting device extremely easy.

[Brief explanation of drawings]

The drawing is a longitudinal sectional front view of a threshing machine showing one embodiment of the present invention. 1... Machine frame, 2... Handling room, 3... Handling trunk, 5...
Feed chain, 6... Crimp net, 7... Case, 8... Suction fan, 9, 10... Drop plate, 1
1... Cylindrical sorting body, 17... Grain receiving gutter, 18...
Screw conveyor.

Claims (1)

[Claims] 1. A handling barrel is built into a handling room within the machine frame, a crimp net is stretched at the bottom of the handling room, and a case formed separately from this is placed at the bottom of the machine frame to face the crimp net. A rotary cylindrical sorting body and a suction fan are provided in the case and supported by the case, and the outer circumferential surface of the cylindrical sorting body is separated by the grain threshing from the crimp net. Further, the cylindrical sorting body is formed into a porous shape so that it can be opened and closed, and a grain receiving gutter is disposed at the bottom of the cylindrical sorting body, and the case is attached to the machine frame so as to be openable and closable. Threshing machine sorting device.