JPH04370034A - Dust-discharging structure of thresher - Google Patents

Abstract

PURPOSE:To provide the subject structure prevented in the affection of dusts such as straw dusts and characterized by connecting a cyclone separator to a thresher, disposing a laterally dust-carrying device having a dust compressor therein to the lower part of the cyclone separator, and disposing a lid, a compression chamber and a guide member at the end, intermediate part and upper part of the laterally carrying device, respectively. CONSTITUTION:The dust-discharging structure of a thresher A having a cyclone separator 9 connected to a duct-discharging cylinder 8 of the thresher A, characterized by connecting a dust compressor C to the lower dust-discharging opening 9A of the cyclone separator 9, disposing a spiral laterally dust-carrying device 11 in the cylindrical case 10 of the dust compressor C, disposing a lid 14 at the case end part of the laterally carrying device 11, the lid being able to be opened by the carrying pressure, disposing a compression chamber 12 free from the carrying device between the lid 14 and the end part of the laterally carrying device 11, and further disposing a tilted guide member 15 on the upper inner surface of the compression chamber 12, the guide member 15 being tilted in the inner side direction with approaching the lid 14, thereby permitting to discharge dusts such as small straw dusts as high density compressed layers so as to prevent the dusts from affecting human bodies.

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 a threshing device, and to incorporate the configurations described in (a) to (c) 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. (c) An inclined guide member is attached to the upper inner surface of the compression chamber, and the guide member is located radially inward toward the opening/closing lid.

[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. Since the upper inner surface of the compression chamber 12 is provided with an inclined guide member 15 located radially inward toward the opening/closing lid 14, a compressed layer with high density can be obtained.

[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. The compression layer is thick, and the upper inner surface of the compression chamber is
Since the inclined guide member is located radially inward toward the opening/closing lid side, a denser compressed layer can be obtained, and air leakage from the thin layer can be prevented. This prevents the separation function of the cyclone separator from deteriorating. Moreover, since the guide member is attached and the structure is configured to obtain a high-density layer, the cost is lower than, for example, when the entire cylindrical case forming the compression chamber is formed into a tapered shape. Can be configured.

[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. 2, 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 recovery 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.

The first object recovery device 4 and the second object recovery device 5 of the threshing device A are composed of air conveying devices that utilize exhaust air from above the cyclone separator 9, and eliminate the conventional well-known screw conveyor. This was done to reduce the weight of the aircraft.

As shown in FIG. 1, a cylindrical case 1 is provided at the dust outlet 9A below the cyclone separator 9.
A dust compression device C equipped with a spiral-type lateral conveyance device 11 driven by a motor M is connected inside the 0, and the straw waste discharged from the dust outlet 9A is conveyed to one side and transferred to the conveyance device. They are collected, compressed, and solidified in a compression chamber 12 at the end of 11, and are discharged by pushing out an opening/closing lid 14 biased by a spring 13.

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, and a terminal end of the conveying device 11. An inclined guide member 15 is attached to the upper inner surface of the compression chamber 12 formed between the opening and closing lid 14, and is located radially inward toward the opening and closing lid 14, so that the compression chamber 12 can be compressed with high density. The structure is such that a layer is obtained.

[0013] 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] Longitudinal cross-sectional view of main parts

[Figure 2] Longitudinal cross-sectional view of the compression device

[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 14 Opening/closing lid 15 Guide member 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 (c) 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 (14) that can be opened by conveying pressure.
14) and the terminal end of the conveying device (11) is provided with a compression chamber (12) in which the conveying device does not exist. (c) The compression chamber (12) has an opening/closing lid (1) on the inner surface of the upper part.
4) An inclined guide member (15) is provided which is located radially inward toward the side.