JPS6138435Y2 - - Google Patents

Description

[Detailed explanation of the invention] In the conventional threshing machine with a suction windmill attached to the wall plate of the dust sorting room, the long straw in the handling chamber gets caught in the suction port of the suction windmill, and the straw debris becomes entangled with it, reducing the suction performance. In particular, when the grain culm is fragile and a large amount of long straw is generated, such as wheat, clogging may occur.

In order to improve this drawback, when the base of a diffusion rod made of an elastic material and whose tip protruded outside the suction port was fixed to the blade of a suction windmill, the long straw etc. could be removed.

However, since a large load is applied only to the tip of the elastic rod, another drawback arises in that the diffusion rod and the blades are deformed.

Therefore, by making the diffusion rod thinner to make it more flexible, we were able to prevent the diffusion rod and blades from deforming, but since the diffusion rod was bent over its entire length, the tip was tilted significantly in the opposite direction to its rotating direction, significantly reducing its diffusion function. However, the original purpose of removing long straw could not be achieved.

The present invention is aimed at providing a dust removal device for a thresher which can accurately remove long straw and the like that gets caught in the suction port of the suction windmill without deforming the spreader rod or the blades of the suction windmill. In a thresher which has a suction windmill attached to the wall panel of the dust removal sorting chamber, a spreader rod made of elastic material and having a wound portion at its base is attached to the blades of the suction windmill, and the tip of the spreader rod protrudes from the suction port of the suction windmill.

The embodiment shown in the drawings will be explained below.1
is an oscillating sorting body installed from below the receiving screen in the handling room to the dust sorting room 2, and is used to collect grains leaking from the receiving screen and grains generated in the handling room and discharged from the dust inlet. Straw and the like fall onto a transfer plate provided at the starting end of the oscillating sorter, and while being transferred one by one, grains become the lower layer, and long straw and relatively large pieces of straw float up and land on the straw rack 3. will be sent later.

In addition, since the sorting air from the blower windmill installed below the supply port blows over the first receiving gutter 4 and the second receiving gutter 5, the grains leaking from the sorting net 6 are removed from the first one after being wind-sorted. It falls into the receiving gutter 4 and is carried out of the machine by a transfer spiral.

Furthermore, since a suction windmill 8 is installed on the side wall of the dust sorting chamber 2, the long straw on the straw rack 3 and the second straw transferred from the sorting net 6 onto the second sorting body consisting of the rack 9 and the sheave 10 are removed. is selected by the pressure air of the blower windmill and the suction wind of the suction windmill 8, and the second one is transferred to the second thrower 11 by the transfer spiral in the second receiving gutter 5.
and is returned onto the transfer plate via a second return passage on the side of the treatment chamber.

Further, the suction windmill 8 has a suction port 12a inside.
A rotating shaft 14 supported by the casing 12 via a shaft bearing cylinder 13, and five blades 16 projecting radially from a boss portion 15 fixed to the inner end of the rotating shaft 14. It is composed of...

Then, the cap 1 fitted into the boss portion 15
7 has a long hole 18 in the cylindrical portion into which each blade 16 fits, and a bifold-shaped engagement piece 19 that fits into the edge of the three blades 16 is fixed to the outer peripheral surface. ,
A holder 20 having a U-shaped cross section is fixed to the outer surface of one engaging piece 19.

Further, the diffusion rod 21 is made of an elastic material, has a winding part 21a at its base, a mounting part 21b is bent into a U-shape and pushed into the holder 20, and a tip end is connected to the inlet of the casing 12. 12a
The cap 17 partially protrudes outward from the cap 17.
is fixed to the rotary shaft 14 by a bolt 23 and a nut 24 screwed into a hole in the boss portion 15 through a hole 22 provided on its circumferential surface.

When the rotating shaft 14 of the suction windmill 8 is driven to rotate, the long straw and straw waste in the dust sorting chamber 2 are sucked and discharged outside the machine as described above. When caught in the spout 12a in a hanging manner, the spreading rod 21 hooks the long straw and rotates while diffusing the straw waste, so that the long straw becomes folded in half and is sucked and discharged.

At this time, when the spreading rod 21 receives resistance due to the long straw being caught, the winding portion 21a at its base deforms to absorb the resistance, and the spreading rod 21 itself does not bend much, and the long straw is folded in half. is the tilted diffusion rod 2
It separates from 1 and is sucked out.

In addition, if a plurality of engagement pieces 19 are provided radially as in the above-mentioned embodiment, the balance of the blades 16 as a whole can be maintained and damage to the blades 16 and the casing 12 can be prevented. Considering the strength, the diffusion rod 21 as shown in Figure 7
Only the engagement piece 19 for attachment may be provided.

Since the present invention is constructed as described above, when the diffusion rod catches the long straw etc. caught in the suction port of the suction windmill,
The long straw becomes folded in half, and the spreading rod absorbs the resistance due to the long straw by deforming the winding part at its base, and the spreading rod bends greatly and the long straw caught on its tip becomes folded in half. There is no possibility that the blade will come off beforehand or that the load on the diffusion rod will directly spread to the blade and damage the blade.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
Figure 1 is a cross-sectional view with some parts of the threshing machine omitted, Figure 2 is a front view of the main parts, Figure 3 is a cross-sectional view taken along A-A in Figure 2, and Figure 4 is taken along B-B in Figure 3. 5 is a longitudinal sectional view of the suction wind turbine, 6 a, b, c are action diagrams of the diffusion rod, 7 is a sectional view of another embodiment, and 8 is a diagram showing the diffusion rod. In this figure, a is a front view, b is a top view, c is a bottom view, d is a left side view, and e is a right side view. 8... Suction windmill, 12a... Suction port, 14...
Rotating shaft, 16...Blade, 17...Cap, 19
...Engagement piece, 21... Diffusion rod, 21a... Winding part.

Claims (1)

[Scope of utility model registration request] In a threshing machine with a suction windmill attached to a wall plate of a dust sorting room, a spreading rod made of an elastic material and having a winding portion at the base is attached to the blade of the suction windmill,
A dust evacuation device for a threshing machine, characterized in that the tip of the diffusion rod protrudes from the suction port of the suction windmill.