JPS6320290Y2 - - Google Patents

Description

[Detailed description of the invention] Conventionally, in a combine threshing machine that performs raw threshing, a ventilation fan installed below the supply port constitutes a sorting air path from below the receiving net toward the dust exhaust port or suction fan, and An oscillating sorting body is installed in the air passage, and the second material, which falls into the second receiving gutter and is transferred by the second spiral, is passed through the second return passage in a closed state by the second thrower and onto the oscillating sorting body. There are already known methods that reduce this to .

However, when the threshing machine threshes wet grain culms, if the amount of second grain increases, the second thrower may become clogged, and the throwing distance of the second grain decreases, causing the second grain to be shaken and sorted. It had the disadvantage that it could not be thrown all the way to the beginning of the body, resulting in poor sorting performance.

The present invention is a combine threshing machine that does not cause clogging of the second thrower even if the threshing is wet, and that can return the second grain to the starting end of the oscillating sorter and perform good oscillating sorting. A blower fan is installed below the supply port, and the blower fan forms a sorting air path extending from the bottom of the handling chamber to the dust removal section, and a swinging sorter is installed in this sorting air path. In the threshing machine, the second thrower is constructed so that the discharge port of the second thrower is opened toward the second return passage between the handling room and the machine wall, and the second thrower is returned to the swing sorting plate. The machine wall on the same side as the second thrower is configured as an inclined part facing the swinging sorter, and the numerous intake holes bored in the inclined part and the air intake port of the blower fan are connected to each other by a side plate across the suction air path. It is characterized by being covered.

The embodiments shown in the drawings will be explained below.
Reference numeral 1 denotes a handling cylinder mounted on a handling chamber 2 by a handling cylinder shaft 3, and below the handling chamber 2 on the side of the supply port 4 is a blower fan 7 having intake ports 6, 6' on the side opposite to the handling port 5. The blower fan 7 is used to direct the main sorting air from below the receiving net 8 to the suction fan 11 or dust exhaust port 12 that constitutes the dust removal section through the upper part of the first receiving gutter 9 or the second receiving gutter 10. A sorting air passage is constituted by a passage 13 and a sub-selection air passage 14, and the sorting air passage includes a transfer plate 15 facing the lower surface of the receiving gutter 8, and a first receiving gutter extending from the rear end thereof. A swinging sorting body 18 consisting of a sorting net 16 facing above 9 and a stroke rack 17 facing above second receiving gutter 10 is installed so as to swing back and forth.

19 is a transfer spiral 10a provided in the second receiving gutter 10
It is a No. 2 thrower connected to the terminal end of the No. 2 thrower, and its discharge port 19a opens toward the front at the rear of the No. 2 return passage 21 constructed between the handling room 2 and the machine wall 20. The second object thrown by the second thrower 19 is returned to the starting end of the transfer plate 15 of the oscillating sorting body 18 through the second return passage 21 and subjected to the oscillating transfer sorting process again.

Reference numeral 22 denotes a second reduction passage upper plate that is inclined diagonally forward and downward from the upper end of the discharge port 19a of the second thrower 19.

A large number of intake holes 23 to prevent grains from leaking are provided in a sloped portion 20a of the machine wall 20 below the discharge port 19a and above the transfer plate 15 toward the transfer plate 15, The intake holes 23 and the outside of the intake port 6 of the blower fan 7 are covered with a side plate 25 with a suction air path 24 in between.

Incidentally, the inclined portion 20a provided with the intake holes 23 may be constructed of a net-like material.

In the above-mentioned device, grains during threshing and small straw waste generated in the handling room 2 are transferred from the receiving net 8 to the transfer plate 15.
The grains fall to the top, are transferred and sorted, are sieved by a sorting net 16, and at the same time are sorted by the sorting wind of the main sorting air passage 13, and the grains fall first into the receiving trough 9 and are sent out of the machine. Light straw waste is sucked out of the machine by a suction fan 11.

Further, the ears of grain and long straw during threshing fall onto the transfer plate 15 from the dust inlet 26 and join onto the threshed grains leaking from the receiving net 8.

Further, the screened matter remaining on the sorting net 16 is thrown onto the straw rack 17 and transferred, and subjected to leakage sorting and wind selection by the sorting wind of the sub-sorting air passage 14, and the long straw is passed through the dust exhaust port 12. The second object that is discharged backwards and falls into the second receiving gutter 10 is transferred to the second transfer spiral 10a.
The second thrower 19 throws this to the second return passage 21, and the second waste is returned onto the transfer plate 15.

At that time, a handling cylinder draft generated by the rotation of the handling cylinder 1 blows out from the inside of the conventional second return passage 21.
Its outer and forward sides were blocked off by the aircraft wall.
That is, although the lower part is open, both sides and the front part are closed, so the wind force of the discharge air from the second thrower 19 is reduced, but in this embodiment, the blower fan 7
is from the plurality of intake holes 23... to the second reduction passage 21.
Since the inside is suctioned, the air discharged from the second thrower 19 is not reduced as in the conventional case, but it is actively supported, which prevents the second thrower 19 from clogging and increases the flight distance of the second thrower. increase

Since the present invention is configured as described above, the blower fan draws air into the No. 2 return passage through a large number of intake holes provided in the inclined part of the machine wall, and assists the discharge air of the No. 2 thrower to move the No. 2 thrower. In addition to preventing clogging, the second material can be returned to the transfer starting end side of the oscillating sorting body, and re-sorting of the second material can be carried out satisfactorily.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
FIG. 1 is a side view showing a partial cross section of the threshing machine, and FIG. 2 is a cross sectional view of the same. 2... Handling room, 4... Supply port, 6, 6'... Intake port, 7... Ventilation fan, 11... Suction fan, 1
2...Dust exhaust port, 19...Second thrower, 20...
Machine wall, 21...second return passage, 23...intake hole.

Claims (1)

[Scope of utility model registration request] A blowing fan is provided below the supply port, the blowing fan forms a sorting air path extending from the bottom of the handling chamber to the dust removal section, and a swinging sorting body is installed in this sorting air path,
In a threshing machine in which the discharge port of the second thrower is opened toward the second return passage between the handling chamber and the machine wall, and the second product is returned onto the swing sorting plate,
A side plate in which the machine wall on the same side as the second thrower is configured as an inclined part facing the rocking sorter, and a suction air path is separated from the numerous intake holes bored in the inclined part and the intake port of the blower fan. A combine threshing machine characterized by being covered with.