JPH04370030A - Dust-discharging structure of thresher - Google Patents

Abstract

PURPOSE:To release dusts in a high density compressed mass state by carrying the dusts released from the lower discharging opening of a cyclone separator to a tapered compressing chamber with a laterally carrying device and subsequently opening the lid of the laterally carrying device by the carrying pressure. CONSTITUTION:Dusts such as straw dusts released from a dust-discharging cylinder 8 are separated in a cyclone separator 9, discharged from a dust- discharging opening 9A and subsequently carried with a lateral carrying device 11 of a dust-compressing device C toward a side thereof. The dusts accumulated in a tapered compressing chamber 12 are compressed and discharged in the compressed state through a lid 14 opened by the carrying pressure.

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 to achieve 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 (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) The compression chamber is formed in a tapered shape that becomes narrower toward the opening/closing lid side.

[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 compression chamber is tapered toward the opening/closing lid side, 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. Since the compression layer is thick and the compression chamber tapers toward the opening/closing lid side, a dense compression layer is obtained, and unlike when the layer is thin, air leaks from the thin layer. This prevents the separation function of the cyclone separator from deteriorating.

[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.

As shown in FIG. 1, the threshing device A
A cyclone separator 9 is connected to the dust exhaust pipe 8, which utilizes centrifugal force caused by swirling airflow. Dust such as straw is removed from the lower dust outlet 9A, and air is removed from the upper air outlet 9B. It is designed to be separated and discharged.

A threshing device A is installed in the cylindrical case 10 at the dust outlet 9A below the cyclone separator 9.
A dust compression device C equipped with a spiral-type horizontal conveyance device 11 driven via a belt transmission device B is connected to the second object collection device 5 of The materials are transported to one side, collected, compressed, and solidified in a compression chamber 12 at the end of the transport device 11, and are discharged by pushing out an opening/closing lid 14 biased by a spring 13.

[0011] Then, the terminal end of the conveyance device 11 and the opening/closing lid 14
The compression chamber 12 formed between the cylindrical case 10 and
However, the opening/closing lid 14 is opened slightly from the front end of the conveying device 11.
It is formed in a tapered shape that becomes narrower toward the side, and is configured such that the compression density in the compression chamber 12 becomes higher. and,
Correspondingly, the vicinity of the terminal end of the conveyance device 11 is formed into a tapered shape that is slightly gentler than the taper of the cylindrical case 10, so that conveyance to the compression chamber 12 can be carried out smoothly.

The cylindrical case 10 also includes a triangular hopper portion 10a connected to the dust outlet 9A below the cyclone separator 9, and a cylindrical portion 10b connected thereto. The connecting portion 10c with the shaped portion 10b is formed into a curved surface so that straw waste will not be caught in the connecting portion 10c. Further, an air outlet 9B above the cyclone separator 9 is provided with an opening/closing lid 16 biased by a spring 15 to prevent rainwater from entering, and is expanded by the discharged air.

[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] 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 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) is formed in a tapered shape that becomes narrower toward the opening/closing lid (14).