JPS638724B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cross-flow fan for removing threshing dust, etc., and can be used not only for removing dust from threshing equipment such as combine harvesters and harvesters, but also for other agricultural waste as well as non-agricultural waste. It can also be used for dust.

When a cross-flow fan for dust removal suctions and discharges relatively long objects such as straw, the dust wraps around the fan's outer periphery. By making it easier to engage and scraping out at the outer periphery, dust can be removed quickly.

For this reason, the present invention has taken the following technical measures. That is, on the outer periphery 3 of the support plate 2 that supports the intermediate part of the width of the blade 1, a groove 4 for fitting the blade 1 is opened outward at the outer edge 5 of the blade 1 or the outer periphery thereof. A cross-flow fan for removing threshing dust, etc., is configured as follows.

With this configuration, the present invention has the following technical effects. In other words, the flow of waste particles sucked and discharged by the rotation of this cross-flow fan is as follows:
Some dust that passes between the blades 1 and 1 is
The dust crosses through the center of the cross-flow fan and is discharged toward the discharge port, but some relatively long dust clings to the rotating outer circumference of the blade 1 and is discharged toward the discharge port. At this time, the middle part of the width of the blade 1 is fitted into and supported by the groove 4 formed on the outer periphery of the support plate 2, and the outer end of this groove 4 is connected to the outer edge 5 of the blade 1 or the outer periphery thereof. Since the opening 6 is opened outward at the opening 6, dust is engaged and scraped out at the opening 6, and long dust can be effectively scraped out. It is also prevented from crossing the rotational center and being engaged with the rotational inner circumferential portion of the fan, thereby maintaining good dust collection and discharge. The configuration can also be simplified.

In addition, as shown in the figure, the outer periphery 3 edge 7 of the support plate 2
If the opening 6 of the groove 4 is extended over the width A of the outer circumferential edge 7 and provided in a dish shape, the opening 6 of the groove 4 is extended over the width A of the outer peripheral edge 7. The thickness of the rotating inner side is kept thin so that the suction effect is not reduced, and the width of the opening 6 is widened to enhance the dust scraping effect.

In the drawing, reference numeral 8 denotes a disk that fixes both ends of the blade 1, and a support plate 2 is disposed at one or several places in the middle of the width of the blade 1. 7 is formed parallel to the width of the blade 1 to form a dish shape, and an opening 9 is formed at the center of rotation. Groove 4
is provided in the same shape as the blade 1 forming a curved cross section, this blade 1 is fitted, and the outer end opening 6 of the groove 4 is positioned on the same plane as the outer edge 5 of this blade 1 or slightly outside of this. establish. Each groove 4 is formed in an oblique direction with respect to the radial direction line.

The threshing machine consists of a threshing chamber 10, a swinging sorting device, a dust suction section having a cross-flow fan, etc.
0 is equipped with a handling barrel 11, a sorting net 12 is provided on the lower side, a supply port 13 is provided at the front, and a straw discharge port 14 is provided at the rear.
A chain 15 for transferring the grain culm and a clamping rod 16 are provided on one side, and a cross-flow fan 18 is provided at the rear side of the threshing chamber 10 through a discharge culm funnel opening 17. A guide plate 19 is provided along the upper rotating outer periphery of the fan 18, and a guide plate 19 is provided between the guide plate 19 and the fan 18 to guide dust while discharging the rear side. It is configured so that it can be discharged from an outlet 20. 21 is a culm exhaust chain provided on the rear side of the chain 15, and is provided inside the culm funnel.

These swinging sorting devices installed below the threshing room 10 and the dust removal section include a receiving plate 22 below the sorting net 12, a straw rack 2 below the straw outlet 14, and a funnel opening 17.
3. Stroll rack 2 below cross-flow fan 18
4, and a sorting net 25 on the rear side of the receiving plate 22 are provided on the left and right rocker frames 26.

On the lower side of this swinging sorting device, there is a pressure winch 27,
The first helical gutter 28 and the second helical gutter 29 are installed, and these first and second helical gutter 28, 2 are installed from the pressure wind trough 27.
A sorting air passage is provided which passes through the upper side of the dust removal section 9 and toward the discharge port 20 of the dust removal section. 30 is a second grain lifting machine.

The grains threshed in the threshing room 10 leak through the sorting net 12 and are sorted from the receiving plate 22 by the sorting net 25, and the first grain is received by the first helical gutter 28 and taken out of the machine. The material is received by the second helical gutter 29 and returned to the threshing room 10 by the grain lifting machine 30.

The straw waste discharged from the straw outlet 14 is sorted and transferred on the swinging straw rack 23, and the grains leak downward, but the straw waste is further transferred onto the straw rack 24, where it is sucked into the cross-flow fan 18. or directly from the outlet 20 from the rear end of the stroller rack 24.

The cross-flow fan 18 rotates in the direction of the arrow 12, and the fine dust crosses the rotational center of the blade 1 and flows out toward the rear discharge port 20, while the long straw waste flows upward along the rotational outer periphery of the blade 1. and the guide plate 19 and are scraped out toward the discharge port 20 side. At this time, since the opening 6 of the groove 4 is formed on the outer peripheral edge 7 of the support plate 2 at the middle part of the width of the fan 18, the straw waste can be quickly scraped out by the engagement by the opening 6. Crab is performed.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is a longitudinal sectional view, Fig. 2 is a front sectional view of a part thereof, and Fig. 3 is a longitudinal sectional view.
The figure is an enlarged view of a part of it, and Figure 4 is its side sectional view.
FIG. 5 is an enlarged view of a portion thereof. In the figure, 1 is a blade, 2 is a support plate, 3 is an outer periphery,
4 indicates a groove, 5 indicates an outer edge, 6 indicates an open area, and 7 indicates an edge.

Claims (1)

[Claims] 1. On the outer periphery of the support plate that supports the intermediate part of the blade width,
A cross-flow fan for threshing dust, etc., in which a groove for fitting the blade is opened outward at the outer edge of the blade or the outer periphery thereof. 2. Claims in which the outer peripheral edge of the support plate is formed in a dish shape over an appropriate width toward one side, and the open part of the groove is extended over the width of this outer peripheral edge. A cross-flow fan for removing threshing dust, etc., as described in item 1.