JPH052999Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an exhaust dust treatment device for a threshing machine.
It is used in the field of threshing machines, which are agricultural machines.

[Prior Art] Conventionally, in a threshing machine configured by horizontally disposing a cross-flow fan for sucking and discharging dust above the rear side of a swing sorting body that extends from the bottom of the handling barrel toward the dust exhaust side, a similar structure was used. This is seen in Japanese Patent Publication No. 57-52811, but with such a structure, when the flow rate from the oscillating sorter increases, the particles and grains in the upper layer will be sucked out and dusted. There were drawbacks such as No. 3 loss occurring, clogging of the cross-flow fan, poor feed on the swing, and poor sorting.

[Problems that the invention aims to solve] This invention solves these drawbacks.
With this kind of structure, the material to be sorted discharged from the handling cylinder falls onto the oscillating sorter with more on one side (the tip side located on the opposite side of the feed chain) and less on the other side. Although it will be subject to dynamic selection,
In this way, the untreated dust sent out from the oscillating sorter can be better processed by the processing cylinder in the direction perpendicular to the handling cylinder, reducing No. 3 loss and eliminating clogging of the crossflow fan. The present invention provides that dust can be removed satisfactorily by using the oscillating sorting body, and that the sorting performance can be improved by improving the delivery from the oscillating sorting body, so that it can be carried out suitably.

[Means for Solving the Problems] Next, a configuration example shown in the drawings will be described as a means for solving the problems.

Figure 2 shows a cross-sectional view of a threshing machine installed in a combine harvester.A supply port 6 and a straw discharge port 7 are formed on both sides of the lower part of a handling chamber 1a in which a handling barrel 1 is installed, and a crimp is provided at the bottom of the handling chamber 1a. A net 8 is stretched, and a downward dust inlet 9 is formed at the terminal end of the net 8, and a chaff sheave 1 is provided.
0, a grain sieve 11 and a sieving wire 12 are installed in a swinging sorting body A extending from the lower part of the handling chamber 1a to the dust removal side.
A No. 1 gutter 15 is installed horizontally below the grain board 14 installed diagonally below the grain sieve 11, and a No. 1 spiral conveyor 16 is installed horizontally below the sieve line 12. A second spiral conveyor 18 is mounted on the second gutter 3.

A casing 19 having an opening 17 slightly downward is formed above the sieve wire 12 at the rear of the oscillating sorting body A.
Inside is a cross-flow fan 2 for sucking and discharging dust, which has approximately the same length as the width of the oscillating sorter A and extends in a direction perpendicular to the handling cylinder 1.
The processing cylinder 3, which is located close to the rear side of the sieving line 12 and below the cross-flow fan 2, is attached to the processing cylinder 1 with a length that is approximately the same as the width of the oscillating sorting body A. A guide plate 20 is mounted on a shaft in a direction orthogonal to the processing cylinder 3, and a guide plate 20 is provided to extend obliquely from the rear of the processing cylinder 3 toward the lower end side of the opening 17 of the cross-flow fan 2. A concave 5 is stretched across the oscillating sorting body A on the tip side opposite to the feed chain (not shown) where the amount of untreated dust increases, that is, on the upper side in FIG. Between each horizontal leg 5a, 5a of one side portion corresponding to one side〓C1
is large, and between each horizontal leg 5b and 5b on the other side
It is formed and configured so that C2 is small.

[Function] Therefore, during work, the material to be sorted that falls from the handling chamber 1a is shaken and sorted by the chaff sieve 10, leaks through the grain sieve 11, and is wind-selected.
The grains fall into the No. 1 spiral conveyor 16, are sent out from the chaff sieve 10 to the sieve line 12, and are sent to the sieve line 12.
The second material leaking from the sieve line 12 falls into the second helical conveyor 18 below, and as shown by the arrow A, the dust is drawn from above the sieve line 12 by the suction wind by the rotating cross-flow fan 2. Dust will be sucked in as shown in .

Further, the untreated dust discharged from the sieve line 12 as shown by arrow C is taken into the processing cylinder 3 which rotates as shown by arrow D, and is processed between it and the concave 5. When falling from the chamber 1a, the one side of the oscillating sorter A where the grain culm tip side is located has more untreated dust than the other side and is sent out, and on the side with such a large amount, the
A large amount leaks from the part where C1 is large, and a small amount leaks from the side part 5b between C2 on one side where it is small on the other side, and it is jumped upward by the processing cylinder 4 and the guide The dust flowing along the plate 20 as shown by the arrow H is distributed in approximately the same amount in the longitudinal direction of the processing cylinder 4, and is diffused as it is and sucked into the cross-flow fan 2 to be discharged. It turns out.

[Effects of the invention] The invention has the following effects. That is, the processing cylinder 4 can effectively take in and process the untreated dust sent out from the oscillating sorter A, and the amount fed from the oscillating sorter A is large on the tip side and small. As the leakage state of the concave 5 changes with respect to the other side, the dispersion state of the dust thrown up upward from the processing cylinder 3 can be maintained in approximately the same distribution state over the entire width, resulting in even dust removal. This allows processing to reduce No. 3 loss, eliminates clogging of the cross-flow fan 2, allows for good dust removal, and improves the flow of dust from the oscillating sorter A, resulting in better sorting. It has the feature that it can improve the performance and can be suitably implemented.

[Brief explanation of the drawing]

Figure 1 is a side sectional view of the main part, which is a part of Figure 2;
FIG. 2 is a side sectional view of the threshing machine, FIG. 3 is a plan view of a portion of FIG. 1, and FIG. 4 is a perspective view of a portion thereof. 1... Handling cylinder, A... Oscillating sorter, 2... Cross flow fan, 3... No. 2 gutter, 4... Processing cylinder, 5... Concave, 5a, 5b... Yokosho, C1, C2 ……
Between.

Claims (1)

[Scope of utility model registration request] In a threshing machine configured by horizontally disposing a cross-flow fan 2 for sucking and discharging dust above the rear side of a swinging sorting body A extending from the bottom of the handling barrel 1 toward the dust removal side, the swinging sorting body A
A processing cylinder 4, which is open at the top and extends in a direction perpendicular to the processing cylinder 1, is mounted on a shaft in a region between the upper and lower cross-flow fans 2 and the second gutter 3, approaching the rear side of the processing cylinder.
Below the processing cylinder 4, there is a large gap C1 between the cross bars 5a on the tip side of the grain culm to be supplied, and a gap C1 between the cross bars 5b on the other side.
1. An exhaust dust processing device characterized in that it is constructed by extending a concave 5 formed so that 2 is small.