JPS6033806Y2 - Cross-flow fan type blower device for thresher - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an air blowing device configured to blow air into a sorting air passage of a threshing machine using a cross-flow fan.

Cross-flow fans are advantageous in that they can supply sorting air with less unevenness over the entire width of the sorting air path, so cross-flow fan-type blowers are now commonly used in modern threshing machines.
Even with this cross-flow fan type blower, the wind speed at the central part in the width direction of the sorting air passage is high, and the supply air velocity at both sides in the width direction is lower than the supply wind speed at the central part, so that the air is not blown across the entire width of the air passage. Therefore, in the areas where the wind speed is low on both sides in the width direction, the inlet area should be made larger than in the center of the width direction of the air passage to avoid a drop in the wind speed. (For example, opening/closing 53-15
Publication No. 8676).

However, in conventional models, in order to expand the air intake area at both ends of the cross-flow fan, air intake ports are opened around the cross-flow fan axis on both left and right panels, so that the cross-flow fan is directly connected to both sides of the fan. It is not possible to mount the fan on a bearing, and the cross-flow fan must be supported by installing bearings on both sides of the fan so as not to block the air intake ports, which makes the structure complicated. Since the side plate of the casing is made to have a large opening, the robustness of the casing is deteriorated, and there is also the disadvantage that it is disadvantageous in housing and supporting the cross-flow fan.

In addition, although the conventional device takes steps to expand the suction area at both ends of the cross-flow fan, it is inconvenient to use because it does not have a structure that allows the suction port area to be adjusted.
Furthermore, since the suction port is left open and there is no protective means, the cross-flow fan is easily damaged.

Therefore, the present invention was implemented with the aim of providing a cross-flow fan type ventilation device that can solve the above-mentioned problems all at once.

That is, the present invention provides a threshing machine configured such that a cross-flow fan blows sorting air into a sorting air passage of a predetermined width above the No. 1 conveyor, in which a case portion in which the cross-flow fan is installed is located on both sides of the machine body. It is formed by a front plate and a rear plate, which are fixed by joining the mounting part to the plate, so that a suction port is formed at the bottom, and the cross-flow fan housed in the case has both ends of its shaft connected to the Each side plate is supported by fixed metal, and both widthwise sides of the lower end of the front plate and rear plate located before and after the suction port are cut out within a range that does not affect the metal fixation. A notched recess is formed at both ends of the suction port so that the suction area is widened, and the suction port is further provided with an adjusting means for adjusting the suction area, which also serves as a protection means. It is something.

Next, the embodiment shown in the drawings will be described.

Figure 1 shows a cross-sectional view of a threshing machine mounted on a combine harvester.
A link net 6 is installed at the bottom of the handling chamber 5 which houses the handling barrel 4 with handling teeth 3.
The supply lower is installed on one side of the handling chamber 5, and the dust inlet 8 is installed on the other side.
A No. 4 funnel 9 is installed behind the handling chamber 5, a sorting dust extraction chamber 10 is installed behind it, and a sorting dust extraction chamber 1 is installed.
A suction port 11 of a suction dust ejector is installed on the upper side of the vacuum cleaner.

A swinging sorting body extends from below the handling chamber 5 to below the sorting dust removal chamber 10, and the swinging sorting body is connected to the terminal end of the grain feeding plate 12 stretched over the lower part of the crimp net 6. A grain sieve 13 is installed on the side, and a chaff sieve 14 is stretched above the grain sieve 13 from below the dust inlet 8 toward the rear. Extend and configure.

A sorting air passage 2 of a predetermined width is formed below the grain sieve 13, and the width of the sorting air passage 2 is filled in the first bucket a below the sorting shelf 16 provided diagonally below the sorting air passage 2. A No. 1 conveyor 1 is installed extending over the screen, and a No. 2 conveyor 17 is installed in the No. 2 gutter 7a behind the sorting shelf 16 and below the front line 15.

A cross-flow fan A is installed below one end of the oscillating sorting body, and the shaft 19 of the cross-flow fan A, which is installed horizontally across both side plates 18. Suction port C is formed below cross-flow fan A inside case part B, which is installed on metal 20.20 and is installed to transmit rotation by transmission pulley 21, and is formed with 18.18 holes on both side plates. The discharge port 22 formed at the front of the upper part of the cross-flow fan A is installed so as to communicate with the sorting air passage 2 through a guide plate 23, but the width of the cross-flow fan A in the case part B and the discharge Width of outlet 22 and sorting air passage 2
are configured so that the predetermined widths of the two are substantially the same.

In addition, the suction port C is formed to open downward across the full width of the cross-flow fan A between the side plates 18 and 18, but the front plate b1 and the rear of the case B, which are before and after the suction port C, are Metal 20 is attached to both sides of the lower end 24.24' of plate b2.
．． 20, the cutout recesses 25, 25.
25', 25' are respectively cut-out-shaped, and on both sides of the suction port C, the suction port area is widened by forming the notch recesses 25, 25.25', 25'.

5 to 8 show the adjustment means that also serves as a protection means provided in the above-mentioned suction port C, and FIG. 5 shows a case in front of the suction port C below the cross-flow fan A. An adjustment plate 26 is pivotally attached to a part of part B, and the adjustment plate 26
The suction port area of the suction port C can be adjusted by rotating the suction port C.

FIG. 6 shows a second embodiment, in which the adjustment plate 28 in front of the suction port C is slidable so that the suction port area of the suction port C can be adjusted.

7 and 8 show a third embodiment, in which a perforated iron plate 29 having a large number of holes 29' is provided over the entire surface of the suction port C, and the lower surface of the perforated iron plate 29 has a large number of A perforated iron plate 30 having a hole 30' is fitted together in a sliding manner, and the suction port area can be adjusted by sliding the perforated iron plate 30 by overlapping the holes 29' and 30'. .

Therefore, when the cross-flow fan A sucks from the suction port C during the threshing operation, the cutout recesses 25, 25 on both sides
．． Due to the formation of 25' and 25', the suction port area on both sides of the suction port C is increased, and the sorting air is forced from the discharge port 22 to the sorting air passage 2, and uniformly spread over the entire predetermined width of the sorting air passage 2. Air can be blown at a wind speed, and the first grains leaking from the grain sieve 13 can be evenly screened at a uniform wind speed throughout the screening air path 2.

Then, by rotating the adjustment plate 26 in the direction shown by the imaginary line in FIG. 5, and sliding the adjustment plate 26 in the direction shown by the imaginary line in the second embodiment shown in FIG. The air velocity can be adjusted by uniformly adjusting the area of the inlet port of C, and the lower part of the cross-flow fan can be protected by the adjustment plate.

In the third embodiment shown in FIGS. 7 and 8, the holes 29' and 30' are aligned by sliding the lower perforated iron plate 30 as shown by the arrow, and the suction port in the suction port portion C is The area can be adjusted, the wind speed can be adjusted uniformly as in the previous embodiment, and both perforated iron plates 29
．． 30 can provide a structure that protects the lower part of the cross-flow fan A.

As is clear from the above explanation, according to the cross-flow fan device of the present invention, the cross-flow fan A is mounted with its shaft 19 supported by the metals 20 and 20 of the body side plates 18 and 18, respectively. The case part B that accommodates the cross-flow fan A is structured so that a suction port C is formed at the bottom by a front plate b1 and a rear plate b2, which are fixed by joining the mounting parts to both side plates of the fuselage, Both sides in the width direction of the lower end portions 24.24' of the front plate b1 and the rear plate b2 located before and after the suction port C are cut out within a range that does not affect the fixed part of the metal 20.20. Notch recess 25 to increase the suction area at the end.
25, 25', 25', and the suction port C is provided with an adjustment means for adjusting the suction area, which also serves as a protection means, so there are the following advantages.

■ To expand the suction area at both ends of the suction port to compensate for the drop in wind power at both ends of the cross-flow fan, simply cut out the corners of the front and rear plates of case part B, and the airframe Since the side plate is not opened, the cross-flow fan can be mounted and supported directly on the side plate, simplifying the support structure, and the case part also becomes strong in combination with the side plate, and can reliably support the cross-flow fan.

- Moreover, since the suction port C is equipped with a suction area adjustment means that also serves as a protection means, it is possible to perform a wind box while maintaining the difference in suction area between both widthwise ends and the center of the suction port C.
It is convenient to use because the wind speed can be maintained uniformly across the width of the cross-flow fan and the wind force can be adjusted.

In addition, since the adjustment means installed at the suction port also serves as a protection means, the lower part of the cross-flow fan can be protected without any special protection means, making it safe and simplifying the overall structure.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a cross-sectional view of a threshing machine, FIG. 2 is a part of FIG. 1, and FIG.
FIG. 4 is a perspective view taken along line I--N in FIG. 2. 5 to 8 show embodiments of the suction area adjusting means installed in the suction port, FIG. 5 is a side sectional view of the main part of the first embodiment, and FIG. 6 is a side sectional view of the main part of the first embodiment. Example main part side sectional view,
FIG. 7 is a side sectional view of the main part of the third embodiment, and FIG. 8 is a plan view of a part of FIG. 7. 1... No. 1 conveyor, 2... Sorting air path, 18... Body side plate, 19... Axis,
20...Metal, 25.25'...Notch recess, A...Cross flow fan, B...
Case part, C... Suction port part, bl...
Front plate, b2... Rear plate.

Claims (1)

[Scope of utility model registration request] In a threshing machine configured to blow sorting air from a cross-flow fan A to a sorting air passage 2 of a predetermined width above the No. 1 conveyor 1, the case part B housing the cross-flow fan is located on both sides of the machine body. 18゜A suction port part C is formed at the bottom by a front plate b1 and a rear plate b2, which are fixed by joining the mounting part.
At the same time, the cross-flow fan A housed in the case part B has both ends of its shaft 19 connected to the side plates 1.
8.18 are supported by fixed metals 20 and 20 respectively, and both sides in the width direction of the lower ends 24 and 24' of the front plate b1 and the rear plate b2 located before and after the suction port C are made of metal. Notches 25, 25.25 are cut out within a range that does not affect the placement plate so that the suction area on both sides of the suction port is widened.
A cross-flow fan type blower device characterized in that the suction port C is provided with an adjustment means for adjusting the suction area, which also serves as a protection means.