JPH04365422A - Dust-removing structure of thresher - Google Patents

Abstract

PURPOSE:To prevent the undesirable of dust such as small waste straw dis charged from a dust-discharging pipe of a thresher on a threshing worker and a private house. CONSTITUTION:A cyclone separator 9 is connected to a dust-discharging pipe 8 of a thresher A. A dust-compactor C is connected to the dust-discharging port 9A opened at the bottom of the cyclone separator 9. The dust-compactor C contains a spiral-type lateral transfer apparatus 11 in a cylindrical case 10. The case part at the delivery end of the lateral transfer apparatus 11 is provided with a cover 15 openable by the transfer pressure. A compression chamber 12 free from the above transfer apparatus is placed between the openable cover 15 and the delivery end of the transfer apparatus 11.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust removal structure for a threshing device such as a harvester or combine harvester.

0002

[Prior Art] Conventionally, a threshing device such as a harvester sucks dust such as small straw waste inside the threshing device with a dust blower and discharges it to the outside from a dust pipe on the top of the threshing device. .

0003

[Problem to be solved by the invention] Before reaching the ground, dust such as small straw waste discharged from the dust pipe of a threshing device may fall on the worker who is threshing depending on the direction of the wind. Furthermore, when threshing is carried out near residential areas, the dust thrown up into the air has a negative impact on private houses.

The object of the present invention is to eliminate the above-mentioned drawbacks by devising a dust removal structure of a threshing device.

[0005]

[Means for Solving the Problems] The characteristic configuration of the present invention for achieving the above object is to connect a cyclone separator to the dust exhaust pipe of the threshing device, and to incorporate the configurations described in (a) to (b) below. We are prepared. (a) A dust compression device is connected to the dust outlet at the bottom of the cyclone separator. (b) The dust compression device has a spiral type horizontal conveyance device inside a cylindrical case, and is equipped with an opening/closing lid that can be opened by conveying pressure at the case portion at the end of the horizontal conveyance device, and
A compression chamber in which the transport device does not exist is provided between the opening/closing lid and the terminal end of the transport device.

[0006]

[Operation] As shown in Fig. 1, the dust such as straw waste discharged from the dust exhaust pipe 8 of the threshing device A is further finely separated by the cyclone separator 9, which utilizes the centrifugal force caused by the swirling of the airflow. The dust is separated and discharged to the lower discharge port 9A, and the air is discharged to the upper discharge port 9B. and,
Dust such as straw waste discharged from the lower discharge port 9A is conveyed to one side by the spiral conveyance device 11 of the compression device C, and is collected, compressed, solidified, and discharged in the compression chamber 12. Become.

[0007]

[Effects of the Invention] In this way, the dust such as straw waste discharged from the dust pipe of the threshing device is further separated by the cyclone separator, and then solidified and recovered by the compression device. Negative effects on threshing workers and private homes can be avoided. Furthermore, since a spiral type compressor is used, there is less vibration than a piston type, and there is less negative impact on the aircraft. When using a spiral compression device, a compression chamber in which the transfer device does not exist is formed between the end of the transfer device and the opening/closing lid. Unlike the case where the compressed layer is thick and the layer is thin, air leakage does not occur through the thin layer and the separation function of the cyclone separator is not deteriorated.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below regarding a dust removal structure of a threshing device of a harvester. As shown in FIG. 3, the grains that have leaked through the receiving net 2 below the handling barrel 1 are sorted by the swing sorting device 3, and the first grains are sent to the first grain collection device 4, and the second grains are They are respectively collected by the second item collection device 5. Then, the dust such as small straw waste that has reached the end of the swing sorting device 3 is discharged from the upper part of the dust exhaust pipe 8 by the sorting wind from the winnower 6 and the suction wind from the dust blower 7. It happens.

[0009]The dust exhaust pipe 8 of the threshing device A has a
A cyclone separator 9 is connected that utilizes the centrifugal force generated by swirling airflow, and dust such as straw is separated and discharged from the lower dust outlet 9A and air from the upper air outlet 9B. There is.

As shown in FIG. 1, a cylindrical case 1 is provided at the dust outlet 9A below the cyclone separator 9.
0, a spiral type lateral conveyance device 11 is driven from the second item collecting device 5 of the threshing device A via the belt transmission device B.
The straw waste discharged from the dust outlet 9A is conveyed to one side, and is accumulated, compressed, and solidified in the compression chamber 12 at the end of the conveyance device 11, and is formed into a spring. 13 is biased, and the opening/closing lid 15 attracted by the magnet 14 is pushed open and discharged.

The cylindrical case 10 consists of a triangular hopper part 10a connected to the dust outlet 9A below the cyclone separator 9, and a cylindrical part 10b connected thereto. The opening/closing lid 15 attached to the end can be opened and closed by operating a lever 16 during cleaning so that the last remaining straw waste can be opened and discharged.

In the above embodiment, the lid 15 is opened and closed by the pressing force of compressed and solidified dust, but as shown in FIG.
As shown in FIG. 2, a wind pressure sensor 17 for detecting the wind pressure from the cyclone separator 9 is provided in the upper part of the compression chamber 12, that is, a wind pressure sensor for detecting the internal pressure of the compression chamber is provided.
The opening/closing lid 15 may be opened/closed via an electric motor 18 based on the detection result of the wind pressure sensor 17.

Further, although reference numerals are written in the claims for convenience of comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of drawings]

[Figure 1] Schematic vertical cross-sectional view of main parts

[Fig. 2] Partial longitudinal sectional view showing another embodiment

[Figure 3] Side view of the entire harvester

[Explanation of symbols]

8 Dust exhaust pipe 9 Cyclone separator 9A Dust outlet 10 Tubular case 11 Lateral conveyance device 12 Compression chamber 15 Opening/closing lid A. Threshing device C Dust compression device

Claims (1)

[Claims] 1. A dust removal structure for a threshing device, which has a cyclone separator (9) connected to a dust exhaust pipe (8) of the threshing device (A), and has the configurations described in (a) to (b) below. (a) A dust compression device (C) is connected to the dust outlet (9A) at the bottom of the cyclone separator (9). (b) The dust compression device (C) has a cylindrical case (10)
A spiral type horizontal conveyance device (11) is installed inside, and a case portion at the end of the horizontal conveyance device (11) is equipped with an opening/closing lid (15) that can be opened by conveying pressure.
15) and the terminal end of the conveying device (11) is provided with a compression chamber (12) in which the conveying device does not exist.