JPS6024116Y2 - Threshing dust removal device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a threshing dust removal device equipped with a dust removal fan that sucks and discharges waste materials in a sorting section to the outside of the machine.

In this type of threshing dust removal device, a large amount of dust is continuously discharged from the dust removal fan during threshing work, and this dust is suspended in the air like mist, significantly deteriorating the working environment. There was a problem.

In view of the above-mentioned circumstances, the purpose of this invention is to improve the working environment by suppressing the generation of floating dust as much as possible by modifying the dust exhaust airflow passage. A dust removal member having a large number of ventilation holes is provided in the dust removal airflow path of the dust removal fan, and the dust removal member is
The present invention is characterized in that it is configured to be switchable between a dust removal action position and a dust removal position.

That is, by providing a porous dust removing member in the dust exhaust air flow path of the dust exhaust fan, the dust airflow is allowed to pass through, avoiding adverse effects on the fan, and most of the dust contained therein is removed. Since it can be removed, it is possible to suppress the generation of a large amount of floating dust caused by continuous discharge of dust, and furthermore, the dust collected by this dust removal member can be removed from the straw waste, cuttings, etc. contained therein. Since it is possible to discharge the collected dust while it is wrapped in a large dust object, it is possible to suppress the generation of floating dust as much as possible when the collected dust is discharged, and overall the amount of floating dust is greatly reduced, improving the working environment. We have now been able to achieve this goal.

Further, the dust removal member is configured to automatically and reversibly switch to the discharge position due to an increase in internal pressure in a passage portion on the upper side in the dust removal direction and an increase in the weight of the collected dust, or When the dust removal member is configured to be intermittently changed in its posture by a driving force, there is an advantage that the posture of the dust removal member can be reliably and easily changed without requiring any special operation.

Hereinafter, embodiments of the present invention will be described based on the drawings.

Figures 1 and 2 show the threshing device installed in the combine harvester being mounted on the lower side of the handling chamber 2, which has a rotary handling drum 1 mounted on a shaft.
A sorting machine comprising a swinging sorting plate 3 that sorts the deflated grains leaking from the grain while swinging and transporting them along the axial direction of the handling cylinder, and a winnowing machine 4 that generates a sorting wind in the direction of the swinging transport. 5, and at an upper position near the end of the sorting section 5,
A cut-off type dust exhaust fan 6 is provided for sucking and discharging the dust generated in the sorting section 5 to the rear and downward outside of the machine.

A comb-shaped dust removal member 9 that allows the passage of the dust airflow is placed near the outlet of the dust removal duct 8 constituting the dust removal airflow path 7 of the dust removal fan 6, and is placed in a dust removal action position and discharges collected dust. The dust removing member 9 is provided with a spring 10 and a stopper 11 that can be freely switched between the two positions, and a spring 10 and a stopper 11 are provided to bias and hold the dust removing member 9 in the dust removing action position. It is configured to automatically and reversibly switch to the discharge position against the elastic urging force of the spring 10 due to an increase in the internal pressure in the side passage 7 portion and an increase in the weight of the collected dust.

FIG. 3 shows another embodiment, in which a swingable comb-like dust removal member 9 is provided near the outlet of the dust removal duct 8 constituting the dust removal air flow path 7 of the dust removal fan 6, and A solenoid 13 is provided for switching the dust removal member 9 between a dust removal action position and a collected dust discharge position through intermittent expansion and contraction operations based on a timer mechanism 12.

FIG. 4 shows another embodiment, in which a cross section is shown in which a mesh member is provided in the middle of the dust exhaust duct 8 constituting the dust exhaust airflow path 7 of the dust exhaust fan 6 to allow the passage of the dust airflow. A dust removing member 9 in the shape of a small oval is rotatably provided, and by rotating this dust removing member 9 180 degrees manually or by driving force, the dust removing action position and the collected dust discharge position can be alternately switched. It is composed of

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the threshing dust removal device according to the present invention, and FIG. 1 is a sectional view of the threshing device installed in a combine harvester.
FIG. 2 is an enlarged view of the main part, and FIGS. 3 and 4 are sectional views of the main part showing other embodiments. 5... Sorting section, 6... Dust removal fan, 7
...Dust exhaust air flow path, 9...Dust removal member.

Claims (1)

[Scope of Claim for Utility Model Registration] ■ A threshing dust evacuation device equipped with a dust evacuation fan 6 for sucking and discharging the dust in the sorting section 5 to the outside of the machine, the dust evacuation fan 6
A dust removing member 9 having a large number of ventilation holes is provided in the dust exhaust airflow passage 7 of the dust removing member 9, and the dust removing member 9 is configured to be freely switchable between a dust removing action position and a dust collecting position. Threshing dust removal equipment. (2) The dust removing member 9 is configured to automatically and reversibly switch to the above-mentioned discharge position due to an increase in internal pressure in a portion of the passage 7 on the upper side in the dust removal direction and an increase in the weight of the collected dust. A threshing dust removal device as set forth in item (2) of the utility model registration claim. (2) The threshing dust removal device according to claim (2), wherein the dust removal member 9 is configured to change its posture intermittently by a driving force.