JPS6036051Y2 - No. 2 reduction device in threshing machine - Google Patents

Description

[Detailed description of the invention] This invention relates to an improvement of the No. 2 reducing device in a threshing machine.

In a conventional threshing machine (axial flow type), the discharge port of the thrower cylinder that bounces up and transfers the reductant is kept open at the outlet of the reduction chamber (handling chamber or processing chamber), so the flow from the thrower cylinder is reduced. There was a problem in that the blown air was blown out in a direction opposite to the moving direction of the material to be processed in the reduction chamber, which deteriorated the dust-feeding performance in the reduction chamber.

Therefore, the present invention was implemented with the aim of improving such problems, and the outer guide surface for guiding the reduced product into the reduction chamber is formed by extending as far forward as appropriate from the rear wall of the reduction chamber. , a No. 2 reduction position control valve for directing the reduced product to the reduction chamber is installed in its extension, thereby eliminating the deterioration of dust-feeding performance due to the reduction blowing air. It is designed to be able to change its position in the direction of the core to ensure appropriate treatment depending on the state of the reduced product.

The configuration of the present invention will be explained in detail below using specific examples shown in the drawings.

A in the figure is an axial flow type lower-class threshing machine, and this threshing machine A
is roughly constructed as follows.

That is, a handling port 4 is opened across the stem culm supply port 2 on the front side of the housing 1 and the stem culm discharge port 3 on the rear side, and the stem culm transfer devices 5 and 6 are installed on the outer side thereof, and A handling chamber (reduction chamber 8) partitioned by a rear wall 7 is provided at the inner upper part of the casing 1, and a handling cylinder (rotating cylinder 9) with an axis (X-X) facing forward and backward is supported in the chamber 8. A crimp net 10 is stretched below the handling chamber 8 along the rotating outer circumference of the handling cylinder 9, and a sorting chamber 11 is formed inside the housing 1 below the crimp net 10, and a swing sorting mechanism 12 is installed in this chamber. , pressure fan 13. No. 1 screw conveyor mechanism 14. No. 2 screw conveyor mechanism 15, wind direction plate 16, etc. are arranged as required.
is installed, and the No. 2 screw conveyor mechanism 15 of the sorting device B is connected with the No. 2 thrower mechanism C on the side opposite to the handling port 4 side.

The No. 2 thrower mechanism C includes a jump impeller 18 that rotates together with the rotating shaft 17 of the No. 2 screw conveyor mechanism 15, and a thrower cylinder 19 for guiding the reduced material that is jumped up and transferred. The inner guide wall 19a of the thrower cylinder 19 is connected to the rear wall 7 of the handling chamber 8, and the outer guide surface 19b is formed from the rear wall 7 to the front of the handling chamber 8. The extension part 1
9c has a direction (
A No. 2 return position control valve 21 facing Y-Y) is installed in a fixing member 22 in each of the eight handling chambers so that its position can be changed and fixed along the axis (X-X) direction of the handling cylinder. is designed to have a long L-opening in the front-rear direction of the handling chamber 8.

In addition, 23 is the handling tooth, 24 is the cutting blade, 25 is the communication port, 49 port is the blowing direction of the second reducing air, C is the rotation direction of the handling cylinder 9, and 2 is the moving direction of the stem culm in the handling chamber 8. It shows.

Next, to explain the operation of the device having such a configuration, the stem culm group supplied from the supply port 2 into the handling chamber 8 is held at its base by the stem culm transfer devices 5 and 6, and the stem culm group is Straw is transported in two directions and is shredded by the action of the handling cylinder 9, and the shredded straw is carried out of the machine from the discharge port 3, and the processed material is separated from the stem culm in the handling chamber 8. is crimp net 10
The fine grains leak or are brought into the sorting chamber 11 from the exit of the handling chamber 8, are subjected to the action of the sorting device B, and are collected in the No. 1 conveyor mechanism 14. The grains are transferred to the No. 2 conveyor mechanism 15, and the garbage is further separated and transferred to the dust outlet.
The reduced product is gradually transferred into the thrower cylinder 19,
It is jumped up and transferred inside the thrower cylinder 19 by the flip wheel 18 rotating within the cylinder 19, and returned to the handling chamber 8 to be subjected to the processing action of the handling cylinder 9 again. This is similar to existing threshing machines that have a second reduction mechanism.

However, in the configuration of the present invention, when the reduced material from the No. 2 conveyor mechanism 15 is returned into the handling chamber 8, the reduced material is transferred to the thrower.
While being guided and transferred from the outer guide surface 19b of the cylinder 19 along the extending portion 19c, it is regulated by the No. 2 return position control valve 21,
A discharge port 20 opens between the rear wall 7 from the middle of the handling cylinder 9 in the longitudinal direction toward the handling chamber 8 in the axial center (X-X) direction of the handling cylinder 9, that is, in a direction substantially perpendicular to the direction of transport of the stem culms. Moreover, the air is blown out in a direction that substantially coincides with the direction of rotation of the handling cylinder 9 (indicated by the arrow in FIG. 1).

In addition, in this case, if the No. 2 return position control valve 21 is moved back and forth in the direction of the 9th axis of the handling cylinder (X-X) in the direction of arrow H shown in FIG. The reduced product is regulated and returned to an appropriate location in the treatment chamber 8 for processing.

Therefore, with respect to the so-called dust-feeding direction in which the processed material in the handling chamber 8 moves toward the exit side, the blowing air at the time of reduction is a fair wind, and at least there is no headwind, so that the dust-feeding performance is not deteriorated. Since the reduced material can enter the handling chamber 8 from the entire area of the large outlet 20, the threshing process can be carried out comfortably without clogging, and in that case, the amount of reduced material can be removed. Accordingly, the position of the No. 2 return position control valve 21 is changed to return the reduced product to an appropriate position in the treatment chamber 8.

Incidentally, the present invention is not limited to the second return to the handling chamber 8, and may be applied to, for example, a configuration in which the threshing machine has a processing barrel and returns to the processing barrel, or other suitable modified configurations. , and the description ``reduction chamber 8'' and ``rotary drum 9'' includes all of these.

Since the present invention is structured as described above and has the above-mentioned unique effects, it has a much better dust-feeding performance than conventional devices, and there is no clogging of the material to be processed in the reduction chamber, resulting in good threshing. Moreover, since the No. 2 return position control valve is provided so that its position can be changed in the axial direction of the handling cylinder, it is possible to change the return point to an appropriate position depending on the condition of the reduced product to ensure proper processing. The biggest feature is that it has become possible.

[Brief explanation of drawings]

The drawings show a specific example of the present invention; FIG. 1 is a schematic front cross-sectional view of the specific example, FIG. 2 is a schematic cross-sectional side view taken along line I-I in FIG. 1, and FIG. FIG. Death...Reduction chamber, 19...Thrower tube, 1
9b...Outer guide surface, 7...Rear wall, 1
9c... Extension portion, 21... No. 2 return position control valve, 9... Handling cylinder.

Claims (1)

[Scope of utility model registration request] An outer guide surface 19b for returning the reducing material bounced up and transferred inside the thrower cylinder 19 to the reducing chamber 8 is extended to an appropriate location forward of the rear wall 7 of the source chamber. A second reducing device for a threshing machine, characterized in that a second reducing position control valve 21 for directing the reduced product to the reducing chamber 8 is provided so as to be movable and fixed in the axial direction of the handling cylinder 9.