JPS638193Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a winnowing structure in a threshing machine.

In other words, in a threshing machine configured by horizontally installing a winnowing case in which a single axial-flow pressure fan is installed over the entire width of the machine below the feed pan that constitutes the starting end of the swinging sorter, To prevent dust such as straw cuttings falling or scattering from the body side onto the winnowing case and paddy in the suction material from accumulating on the winnowing case and damaging the oscillating sorting body side and the winnowing case side. To provide a device that can reliably receive the dust and rice into a winnow case, send it out, and discharge it, and can be suitably implemented with a simple structure.

Next, the embodiment shown in the drawings will be described.

FIG. 1 shows a cross-sectional view of a threshing machine mounted on a combine harvester, in which a supply port 6 and a straw discharge port 7 are formed at the front and rear of the lower part of the handling chamber 5 which houses the handling barrel 4, and the lower part of the handling chamber 5 is A crimp net 8 and a dust inlet 9 on the terminal side are respectively installed, and a sorting exhaust system is equipped with a suction port 10 of a suction dust extractor on the upper side and a dust exhaust port 11 on the rear side of the handling chamber 5. A dust chamber 12 is installed, and a swinging sorting body A equipped with a feed pan 13, a chaff sheave 14, a grain sheave 15, and a stroke rack 16 is extended from the bottom of the handling chamber 5 to the sorting dust chamber 12 to create a conventional structure. Configure similarly.

In addition, a Karasaki case B in which a single axial flow pressure fan 2 installed over the entire width of the machine body can be housed is installed horizontally below the feed pan 13 constituting the starting end side of the oscillating sorter A. The front air outlet 17 of the case B is directed below the grain sheave 15, and the No. 1 conveyor 18 is placed below the grain sheave 15, and the No. 1 conveyor 18 is placed below the stroke rack 16.
The number conveyor 19 is installed horizontally and is constructed in the same manner as the conventional structure.

Suction ports 1, 1 are respectively formed on both sides of the winnow case B, and metals 22, 25 fixed to both side plates 20, 21 facing both suction ports 1, 1 are provided with both ends of the winnow shaft 23. At the same time, an axial flow type pressure fan 2 consisting of four blades is installed on the winnow shaft 23 inside the winnow case B, and the winnow shaft 2 protrudes outward.
An input pulley 24 is fitted to the outer end of the input pulley 3.

In addition, upward passages 3, 3 are formed on the upper side of both sides of the winnowing case B, respectively, and are located below both ends of the feed pan 13 and communicate with the lower sides of both sides of the feed pan 13. The passages 3, 3 are open only in the vertical direction and are extended in the longitudinal direction of the machine body, and are wide open across the entire lower side of both sides of the feed pan 13, and the lower portions of both passages 3, 3 are opened inside the suction port 1. It is installed and configured so that it communicates with the side.

Therefore, during work, the axial flow type pressure fan 2
As the machine rotates, outside air is sucked in from the suction ports 1, 1 on both sides, and sorting air is forced downwardly of the grain sieve 15 from the air outlet 17 while sorting is carried out. Mainly dust such as straw cuttings and rice fall from both sides of the feed pan 13 constituting the starting end side of A. These falling objects are stored in passages 3, 3 that are long and wide open in the front and back direction.
It is caught and sucked into the Karakin case B,
The air is sent to the sorting side by the axial pressure fan 2.

In this way, the present invention is a threshing machine that is constructed by horizontally installing a winnowing case in which a single axial-flow pressure fan can be installed over the entire width of the machine below the feed pan that constitutes the starting end of the oscillating sorter. An upward passage communicating between the inside of the winnow case and the lower side of both sides of the feed pan is formed on both sides of the winnow case, and the upward passage extends across the entire lower side of both sides of the feed pan. Since it is configured with a wide opening, the material to be handled from the handling room mainly falls onto the feed pan that constitutes the starting end of the oscillating sorter, and at that time, the material from both sides of the feed pan is dropped onto the winnowing case. Dust such as straw clippings and rice grains that fall or scatter are received and sucked into the upward passage that communicates between the inside of the winnow case and the lower side of both sides of the feed pan, and the dust and rice grains are absorbed into the winnow case. It is possible to prevent damage to the oscillating sorting body side or the winnowing case side due to accumulation on the top, and it has the advantage that it can be suitably implemented with a simple structure.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a sectional view of the threshing machine, FIG. 2 is a partial external view of the thresher, FIG. A sectional view taken along the - line in FIG. 3 is shown. A: Oscillating sorter, 2: Axial pressure fan,
B...Kingen case, 3...Aisle, 13...Feed pan.

Claims (1)

[Scope of utility model registration request] In the threshing machine configured by horizontally disposing a winnow case B in which a single axial flow pressure fan 2 is housed over the entire width of the machine body below the feed pan 13 constituting the starting end side of the oscillating sorter A, The inside of this chisel case B and the feed pan 1 are placed on both sides of the chisel case B.
3 upward passages 3, 3 communicating with the lower sides of both sides of the feed pan 13 are formed, and the upward passages 3, 3 are configured to be wide open across the entire lower side of both sides of the feed pan 13. A winnowing structure in a threshing machine characterized by: