JPH05177171A - Vertical grain classifier - Google Patents

Abstract

PURPOSE:To remove dusts, etc., to prevent the hulled grains being sorted from the contamination therewith by connecting an air exhausting means to the upper part of a grain storage tank to carry out the dusts, etc., therefrom with the air and providing an air supply part on the side or lower face of the grain storage tank to introduce outside air thereinto. CONSTITUTION:A vertically long grain sorter 1 is provided in its interior with a cylindrical sorting net 2 and a rotatable spiral grain lifter 3 within the sorting net 2. Unsorted grains are raised by the spiral grain lifter 3 in order for the undersized grains to be passed through the small holes of the sorting net 2 and carried out therefrom and for the hulled grains to be sent into a grain storage tank 5 connected to the upper side face of the grain sorter 1. An air exhausting means 9 is connected to the upper part of the tank 5 to carry out dusts, etc., therefrom with the inside air and air supply parts 11 and 7 are provided on the side or lower face of the tank 5 to introduce outside air thereinto. As a result, the dusts or the like can be removed to prevent the hulled grains being sorted from the contamination therewith.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a vertically elongated shell body in which a cylindrical selection net body and a lifting grain spiral body rotating in the selection net body are erected upright and accommodated therein. By fried with the fried helix, small grains of this grain are discharged by passing through the small holes of the selection net, and the fine grain is stored in a storage tank connected to the upper side surface of the shell. The present invention relates to a vertical grain sorter for discharging.

[0002]

2. Description of the Related Art Conventionally, as a grain sorter, for example, the one described in JP-A-2-238814 is known. This is a vertically elongated shell, and a cylindrical selection net and a lifted spiral that rotates in the selection net are erected and accommodated, and unselected grains are lifted by the lifted spiral. By doing so, small grains among the grains are discharged through the small holes of the selection net, and the fine grains are discharged into the storage tank connected to the upper side surface of the shell. ..

[0003]

However, in the above-mentioned grain sorter, it is not easy to completely remove dust or grain sticks mixed in or attached to the grain, and it is not always possible. Since it is not discharged from the small holes of the screening net, even a small amount of such dust and the like remains on the refined grain and remains. Therefore, it has been desired to obtain refined grains in a better quality.

The present invention has been made by paying attention to such a conventional problem, and a vertical type grain sorting apparatus in which dust and the like mixed in or attached to grains are sufficiently removed and discharged. Is intended to provide.

[0005]

Means for Solving the Problems The gist of the present invention for achieving the above object is to: 1 Inside a vertically long shell body (1), a cylindrical selection net body (2);
The fried grain spiral body (3) rotating in the sorting net body (2) is erected and accommodated, and the unsorted grain is fried by the fried grain spiral body (3) to obtain the grain. Among them, the small grains are passed through the small holes of the sorting net body (2) and discharged, and the refined grains are discharged into the storage tank (5) connected to the upper side surface of the shell body (1). In the grain type grain sorter, the tank (5) is provided above the storage tank (5).
An exhaust means (9) for exhausting the inside air of the storage tank (5) is connected to discharge the dust inside the storage tank (5), and a ventilation part (for introducing the outside air into the storage tank is provided on a side surface or a lower surface of the storage tank (9). Vertical grain sorter characterized by having 11, 7).

2. On the upper part inside the storage tank (5), the contact members (12, 13) with which the grains discharged from the upper part of the shell collide.
The vertical grain sorter according to Item 1, wherein the vertical grain sorter is provided.

3 The abutting members (12, 13) are plate-like members extending from the upper surface of the storage tank (5),
A plurality of grains are arranged side by side in the discharge direction, and are shorter than the one (13) positioned in the depth direction of the discharge direction (12) so that the grains are projected vertically downward. The vertical grain sorter according to Item 2.

4. The vertical grain sorter according to paragraphs 2 and 3, wherein the contact members (12, 13) are arranged so as to be inclined downward in the discharging direction.

5. The pad member (12, 13) is characterized in that at least the lower end portion thereof against which a large number of grains collide is formed of a cushioning material (12b, 13b) such as rubber and cloth. Vertical grain sorter described in 3 or 4.

6. The pad member (12) is characterized in that at least the upper end portion connected to the upper surface of the storage tank (5) is formed in parallel with the vertical direction so as to be orthogonal to the discharge direction of the grain. Vertical grain sorter described in 2, 3, 4, 5.

7. The vertical cereals according to Item 2, 3, 4, 5 or 6, wherein the contact members (12, 13) are arranged below a connection port of the air-air means (9). Sorting machine.

8. The ventilation part (11) is composed of a plurality of ventilation holes provided in a vertically long region on the lower side surface of the storage tank (5) from the lower position where the grains are accumulated to the upper part. And terms 1, 2, 3, 4, 5,
Vertical grain sorter described in 6, 7.

9 Suction side (10) of the exhaust means (9)
Is provided with a variable opening degree ventilation part (15) for adjusting the suction pressure of the exhaust means by introducing an arbitrary flow rate of outside air. , Vertical grain sorter described in 8.

10 The variable opening degree ventilation part (15) is provided slidably with the ventilation port (16) formed on the suction side (10) and the ventilation port (16) so as to change the opening area. Item 10. A vertical grain sorter according to item 9, wherein the vertical grain sorter comprises a shutter plate (17).

[0015]

When the fried grain spiral body (3) is rotated and the exhaust means (9) is operated while supplying the unsorted grains to the lower part of the sorting net body (2), the unsorted grains are fried. It is scraped up by the grain spiral (3) and rises while being splashed outward.
Then, in the process of this ascending, the grain is subjected to the sorting action by the sorting net body (2), the small grain passes through the small holes of the sorting net body (2) and is eliminated, and the sorting net body (2) The refined grain that does not pass through the small holes rises as it is and is discharged into the storage tank (5) connected to the upper side surface of the shell body (1).

On the other hand, in the storage tank (5), an upward airflow introduced from the ventilation parts (11, 7) and discharged by the exhaust means (9) is generated, and together with the refined grains, in the storage tank (5). The dust and the like emitted to the
While being dropped to the bottom of the storage tank (5) together with the refined grain, it is pushed and discharged by this air flow.

Moreover, when the abutting members (12, 13) against which the released grains collide are provided in the upper part of the storage tank (5), the dust and the like firmly adhered to the grains also impact the collision. Then, it is separated from the grains and reliably pushed by the air stream and discharged.

Further, the abutting members (12, 13) are provided as plate-like members extending from the upper surface of the storage tank (5) so as to be arranged in a plurality in the grain discharge direction, and are arranged in the depth direction of the discharge direction. Shorter than the positioned one (13), (12) When the grain is projected vertically downward where it falls, most of the large number of grains discharged with a certain extent follow the fall trajectory. It surely collides with one of the contact members arranged at the position.

Further, when the lower end portions of the abutting members (12, 13) are formed of a cushioning material (12b, 13b) such as rubber and cloth, scattering of grains due to collision is appropriately suppressed, and also due to collision. Noise and grain damage are suppressed.

Further, when the abutting members (12, 13) are arranged below the connection port of the exhaust means (9), the separation of dust and the like from the grain occurs below the connection port, so that almost no Dust and the like are discharged by the air flow.

Further, a plurality of ventilation holes (11) are provided in a vertically long region from the lower position where the grains are accumulated to the upper part on the lower side surface of the storage tank (5).
In the case of the configuration a), the range in which the air flow is generated always reaches the upper surface of the accumulation of the grains regardless of the amount of the accumulation of the grains, and thus the released or separated dust or the like falls and accumulates. Is constantly exposed to the air flow.

Further, the suction side (1) of the exhaust means (9)
0) A variable opening degree ventilation part (1
When 5) is provided, the suction pressure of the exhaust means (9) can be adjusted to the optimum pressure for efficiently sucking dust and the like.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. As shown in FIG. 1, the vertical grain sorter of the present embodiment has a cylindrical sorting net body 2 which is rotationally driven at a low speed in a vertically long shell body 1 and an opposite direction in the sorting net body 2. The fried spiral 3 which rotates at a high speed is erected and housed therein, and the unsorted grains fed from the feeding hopper 4 to the inner bottom of the sorting net 2 are fried by the fried spiral 3 to obtain the The small grains among the grains are discharged through the small holes of the sorting net body 2, and the refined grains are discharged into the storage tank 5 connected to the upper side surface of the shell body 1.

A blade 6 extending in the radial direction is provided on the outer periphery of the upper end of the fried helix 3, and the fine grains raised to the upper end of the fried helix 3 by the centrifugal force generated by the rotation of the blade 6 are substantially horizontal (see FIG. 1 is bounced off to the left) and discharged into the storage tank 5.

A discharge port 7 and a rotary shutter 8 for opening and closing the discharge port 7 are provided at the lower end of the storage tank 5 so that the fine grains in the storage tank 5 can be taken out appropriately.

Further, on the upper part of the storage tank 5, exhaust means 9 for exhausting the inside air of the storage tank 5 for discharging the dust and the like discharged together with the grain into the storage tank 5 is provided via a box-shaped duct 10. Vents 11 for introducing outside air into the storage tank 5 on both sides of the storage tank 5.
Are formed.

A plurality of ventilation holes 11 are provided in a vertically long region from the lower position where the grains are accumulated to the upper part.
1a. When the rotary shutter 8 is rotated and fine grains are discharged, the discharge port 7 is vacant by about 30% to 60%, and thus the discharge port 7 also functions as a similar ventilation section.

The exhaust means 9 may be, for example, an axial-flow blower or a blower, and its discharge side is a place (or room) for discharging dust or the like by means of a hose or the like.
It is connected to the.

At the upper part of the storage tank 5, the shell 1
The padding members 12 and 13 are provided at the positions where the grains (fine grains) horizontally discharged from the upper portion collide with each other as described above. As shown in FIG. 2, these abutting members 12 and 13 are plate-like members that extend obliquely from a position below the connection port of the exhaust means 9 on the upper surface in the storage tank 5, and are arranged in a plurality in the grain discharge direction. The pad member 13 that is disposed and located at the back along the drop trajectory (parabola) of the grain is in a state of protruding vertically below the pad member 12.

Further, as shown in FIGS. 2 and 3, the abutting members 12 and 13 are each a substrate 12 made of steel or the like.
a and 13a and cushioning materials 12b and 13b made of rubber and cloth attached to the lower end of the cushioning material 1a and 13a.
2b and 13b are arranged at positions where many grains collide. Further, the contact member 12 on the front side in the discharge direction is
The upper end portion 12c connected to the upper surface in the storage tank 5 is formed parallel to the vertical direction so as to be orthogonal to the discharge direction of the grain.

As shown in FIG. 4, the duct 10 has a rectangular parallelepiped outer shape, is connected to the storage tank 5 with its entire lower surface opened, and has a circular connection port 10a connected to the suction side of the exhaust means 9 on its upper surface. The opening degree variable ventilation section 15 for adjusting the suction pressure of the exhaust means 9 by introducing an arbitrary flow rate of outside air is provided on both side surfaces.

The variable opening ventilation portion 15 has a ventilation hole 16 formed on the side surface of the duct 10 and a shutter slidably provided at a position covering the ventilation hole 16 so as to change the opening area of the ventilation hole 16. It is composed of a plate 17, and in this case, the vent hole 16 is constituted by a plurality of elongated holes.

Next, the operation will be described. When the fried grain spiral 3 is rotated and the exhaust means 9 is operated while supplying the unsorted grain from the supply hopper 4 to the lower part inside the sorting net body 2, the unsorted grain is scratched by the fried grain spiral 3. It is raised and rises while being bounced outward. And in the process of this rise,
The grain is subjected to a sorting action by the sorting net body 2, the small grain passes through the small holes of the sorting net body and is eliminated, and the refined grain that does not pass through the small holes of the sorting net body 2 rises as it is and is fed by the blades 6. Shell 1
It is discharged into the storage tank 5 connected to the upper side surface.

On the other hand, in the storage tank 5, the ventilation part 11
An upward airflow (or an airflow as indicated by an arrow in FIG. 2) introduced from (or the discharge port 7) and discharged by the exhaust means 9 is generated, and the dust and the like discharged into the storage tank 5 together with the refined grain are lightweight. Therefore, while being dropped together with the refined grains to the bottom of the storage tank 5, they are pushed and discharged by this air flow.

Moreover, the grains bounced from the shell 1 by the blades 6 collide with the abutting member 12 or 13 and are impacted before falling into the storage tank 5, so that they are firmly attached to the grains. Dust and the like that have been removed are also separated from this grain by the impact of collision and are pushed by the air stream and discharged.

As described above, the abutting members 12 and 13 are arranged so as to be aligned in the grain discharging direction, and the one located at the back is projected vertically below the one on the front side. Most of the large number of grains discharged with a certain extent of collision surely collide with one of the contact members 12 and 13 arranged at the position along the drop trajectory, and the dust separating action by the impact is surely performed. Works on most of the grains released into the.

The abutting members 12 and 13 are arranged below the connection port of the exhaust means 9, and since the separation of dust and the like from the grain occurs below the connection port, the dust and the like separated from the grain Immediately after separation, it is exposed to the air flow. Moreover, the ventilation part 1
1 is formed on the side surface of the storage tank 5 in a vertically long region from the lower position where the grains are accumulated to the upper part,
Regardless of the amount of grain accumulation, the range in which the air flow occurs always extends to the upper surface of the grain accumulation, and thus dust or the like released or separated is always exposed to the air flow until it falls and accumulates.

The strength of the air flow is such that only the dust or the like is removed by sliding the shutter plate 17 and adjusting the suction side pressure of the exhaust means 9 so that even fine grains are not exhausted. It can be adjusted to the optimum strength.

Therefore, there is almost no dust or the like that is not discharged by the exhaust means 9 and accumulates in the storage tank 5 together with the refined grain, and the dust or the like that cannot be completely discharged by the sorting operation of the sorting net body 2 is highly removed. Storage tank 5 by rate
Eliminate before depositing. Therefore, the refined grain accumulated in the storage tank 5 and taken out from the discharge port 7 is of extremely high quality.

It is also possible to open the rotary shutter 8 at the time of the above-described sorting operation and take out the selected grains at the same time. In this case, in addition to the ventilation part 11, the discharge port 7 also functions as a ventilation part for introducing outside air, so that the airflow also flows from this discharge port 7 (that is, from the lowest part of the storage tank 5). Therefore, the grain is subjected to the action of removing dust and the like by this airflow until just before it is taken out.

Further, according to the above embodiment, the pad member 1
Since the lower end portions of 2 and 13 are formed of a cushioning material such as rubber and cloth, scattering of the grain due to the collision is appropriately suppressed, and noise and damage to the grain due to the collision are suppressed.

Furthermore, since the upper end portion of the pad member 12 which is connected to the upper surface inside the storage tank 5 is formed in parallel with the vertical direction, it is difficult for dust and lint to be clogged at the joint between the pad member 12 and the storage tank 5. .. This is because, if the contact member 12 is joined and attached in this way, a gap is unlikely to be formed in the joint portion regardless of whether spot welding or continuous welding is performed. Moreover, in the case of the present embodiment, if this vertical portion is extended upward and joined to the inner surface of the intake duct 10 and spot welding is performed here, the contact member 12 can be attached with almost no gap at the joint. You can

[0043]

According to the vertical grain sorting apparatus of the present invention, the dust or the like that cannot be completely discharged by the sorting operation of the sorting net is generated in the air flow between the ventilation part and the exhaust means before being accumulated in the storage tank. Are sorted out again and eliminated.

Moreover, when the pad member is provided, dust and the like adhering to the grain due to the collision with the pad member is also separated and eliminated. In addition, when a plurality of pad members are arranged side by side and the grain is projected shorter vertically than the one located deeper in the vertical direction, most of the many grains released with a certain spread However, it surely collides with one of the contact members arranged at the position along the drop trajectory, and the separating action functions on most of the grains. Further, when the padding member is arranged below the connection port of the exhaust means, or when the ventilation part is provided in a vertically long region from the lower position where the grains are accumulated to the upper part, it is provided in the storage tank together with the refined grains. Almost all of the released dust or the dust adhering to the refined grain is uniformly exposed to the air flow. Further, when the opening degree variable ventilation section for introducing an arbitrary amount of outside air is provided on the suction side of the exhaust means, the suction pressure (strength of the air flow) of the exhaust means is optimal for efficiently sucking dust and the like. It can be adjusted to any pressure.

In addition, when the lower end portion of the abutting member is formed of a cushioning material such as rubber and cloth, scattering of grains due to collision can be appropriately suppressed, and noise and damage to the grains due to collision can be suppressed. It

Therefore, according to the main technical idea of the present invention, the selected refined grain has a high quality with less contamination of dust and the like. The removal rate is further improved and the quality of the refined grain becomes extremely good, and noise and grain damage due to grain clogging and grain scattering are also suppressed.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a partially enlarged view of FIG.

FIG. 3 is a perspective view showing a configuration inside a storage tank according to an embodiment of the present invention.

FIG. 4 is a perspective view showing a duct constituting the suction side of the exhaust means in one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Shell 2 ... Selection net 3 ... Lifting spiral 5 ... Storage tank 9 ... Exhaust means 10 ... Exhaust means suction side (duct) 11 ... Ventilation part 11a ... Ventilation holes 12, 13 ... Contact member 15 ... Opening degree Variable ventilation part 16 ... Ventilation port 17 ... Shutter plate

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Eishiro Takahashi 4290 Fujioka, Fujioka-machi, Shimotsuga-gun, Tochigi Prefecture Tiger Kawashima Co., Ltd.

Claims (10)

[Claims] 1. A vertically elongated shell body in which a cylindrical selection net body and a fried grain spiral body that rotates in the selection net body are erected and accommodated, and unsorted grains are formed by the fried helix body. By frying, the small grains of this grain pass through the small holes of the sorting net and are discharged, and the refined grains are discharged into the storage tank connected to the upper side surface of the shell body. In a type grain sorter, an exhaust means for exhausting the inside air of the storage tank to discharge dust and the like in the tank is connected to an upper portion of the storage tank, and the outside air is provided on a side surface or a lower surface of the storage tank. A vertical grain sorter characterized by having a ventilation part introduced into a storage tank. 2. The vertical grain sorter according to claim 1, wherein a padding member on which the grains discharged from the upper portion of the shell collide is provided in an upper portion of the storage tank. 3. The abutting member is a plate-shaped member extending from the upper surface of the storage tank, and is arranged so as to be arranged in a plurality in the grain discharge direction. The vertical grain sorter according to claim 2, wherein the grain is projected vertically downward from which the grain falls. 4. The vertical grain sorter according to claim 2, wherein the contact member is arranged so as to be inclined downward in the discharging direction. 5. The vertical cereals according to claim 2, 3 or 4, characterized in that at least the lower end portion of the padding member against which a large number of grains collide is formed of a cushioning material such as rubber and cloth. Sorting machine. 6. The abutting member is characterized in that at least an upper end portion connected to an upper surface of the storage tank is formed parallel to a vertical direction so as to be orthogonal to a discharge direction of the grain. Vertical grain sorter described in 4 and 5. 7. The contact member is arranged below the connection port of the exhaust means.
The vertical grain sorter described in 5 or 6. 8. The ventilation part is constituted by a plurality of ventilation holes provided in a vertically long region on the lower side surface of the storage tank from the lower position where the grains are accumulated to the upper part. , 2, 3, 4, 5, 6, 7 vertical grain sorter. 9. An opening degree variable ventilation part for adjusting the suction pressure of the exhaust means by introducing an arbitrary flow rate of outside air on the suction side of the exhaust means.
Vertical grain sorter described in 3,4,5,6,7,8. 10. The variable opening degree ventilation part comprises a ventilation port formed on the suction side, and a shutter plate slidably provided in the ventilation port to change the opening area. The vertical grain sorter according to claim 9.