JP3069512B2 - Rice grain transport equipment in the house - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice transport apparatus, and more particularly to a rice transport apparatus for transporting rice grains from a tank in a house to a kitchen by an eddy current transport apparatus.

[0002]

2. Description of the Related Art At home, a person carries a heavy rice bag to transfer rice from a rice bag to a rice box or the like. Then, the required amount of rice was transferred from a rice box with a weighing function to an electric kettle or the like and transported to the kitchen kitchen where the rice was sharpened.

[0003]

Therefore, it is necessary for a housewife at home to carry a heavy rice bag and transfer it, which has been a problem of considerable labor and time.

[0004] It is an object of the present invention to solve the above-mentioned problems and to provide a rice transporting apparatus which enables a housewife or the like to transport rice without trouble.

[0005]

Means for Solving the Problems In order to solve the above problems, the constitution of the present invention is as follows. That is, in the first configuration, a rice box that receives and stores rice cereal from the upper portion, passes through the transport path from the rice bag, discharges the rice grain from the lower portion, and is connected to the rice box by the suction air path and the transport path, and has a predetermined amount. A rice discharging device capable of discharging the rice, wherein the rice box has an air flow conveying device connected to an upper part of a conveying path from the rice bag, an air suction device connected to an upper surface of the air flow conveying device, and a metering / discharging device. The rice discharging device includes an air flow transfer device having a transfer path from the rice box connected to an upper portion, an air suction pipe connected to an upper surface of the air flow transfer device, and a lower end of the air flow transfer device. Rice air discharge nozzle, and a shutter for opening and closing the passage of the discharge nozzle, the two airflow transfer devices, a substantially cylindrical device body, one end opened to the upper surface of the device body, the other end A suction air passage connected to the absorption blower device; In the direction intersecting with the path, a transport path for transporting the article penetratingly connected to the side wall of the apparatus main body, between the suction air path and the transport path, and at a right angle to the transport path, the tip is substantially A first airflow control plate protruding to correspond to the center position of the transport path, and a predetermined angle with respect to the first airflow control plate so as to sandwich the suction air passage together with the first airflow control plate. And a second airflow control plate having a leading end separated from the first airflow control plate by a predetermined distance to form a slit.

A second configuration is to include, in addition to the first configuration, means for changing a distance between the first airflow control plate and the second airflow control plate.

[0007] In the third configuration, in addition to the first or second configuration,
An intermediate section located on the upper and inner sides of the apparatus main body is formed between the first and second airflow control plates and both side walls and the upper wall of the apparatus main body.

[0008] In a fourth configuration, in addition to the first or second configuration,
The second airflow control plate is also used as an upper wall of the apparatus main body, and
Right above the lit and above the upper wall of the device body, the first
An airflow control plate and an auxiliary plate are provided, and the first and second airflow control plates and the auxiliary plate form an intermediate section located above and outside the apparatus main body.

In a fifth configuration, in addition to the first, second, third, or fourth configuration, the second airflow control plate is provided with one or more auxiliary slits corresponding to the flow rate of the suction air passage. is there.

In a sixth configuration, in addition to the first, second, third, fourth, or fifth configuration, a slit formed by the first airflow control plate and the second airflow control plate is provided with a slit formed by the first airflow control plate. It is located above the lower end.

In a seventh configuration, in addition to the first, second, third, fourth, fifth, or sixth configuration, the apparatus main body has a substantially rectangular parallelepiped shape, and an upper portion of a side wall opposite to the conveyance path side has That is, it is inclined toward the transport path side and is continuous with the upper wall.

[0012]

When the air suction device of the rice box is activated, the first airflow control plate and the second airflow control plate of the first airflow transfer device turn the suction air into a film shape and narrow down the air by the two. Thereby, the air in the transport path becomes an eddy (spiral) airflow. The rice in the rice bag is efficiently sent by eddy currents in the transport path and introduced into the main body of the rice box A. And escape from the airflow film, the first
It is decelerated by colliding with the airflow control plate or the cushioning material, and is dropped and stored at the lower part of the main body.

Next, when rice is cooked, when the switch of the rice discharging device is turned on, the air suction device of the rice box is activated, and the second airflow conveying device of the rice discharging device operates in the same manner as the first airflow conveying device. The air is drawn out from the suction air passage, and the first airflow control plate and the first airflow control plate form the suction air into a film shape. Become. Therefore, the rice in the rice box is efficiently sent by the eddy current in the transport path and is introduced into the main body of the rice discharging device. The shutter is opened and closed by an air suction device via a suction path and a branch member.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to an embodiment shown in the drawings. In FIG. 1, a rice chest A is arranged on a side of a kitchen worktop. The rice chest A passes through the transport path 2 from the rice bag 3, receives and stores rice grains from the upper part, and discharges them from the lower part. Also, the rice discharging device B is placed above the sink 4.
Is arranged, and is connected to the rice box by the suction air path 1 and the transport path 2 to discharge a predetermined amount of rice.

In FIG. 2, the rice box A has a first airflow transport device 10 connected to the upper part of the transport path 2 from the rice bag 3, and an air suction device 31 connected to the upper surface of the first airflow transport device.
And a metering / ejection member 32 operated by a stepping motor
Is provided.

The first airflow conveying device 10 is shown in FIGS.
In the apparatus casing 13, the lower part of the cylindrical main body 13a having a vertical axis is reduced in a conical shape, and a lid 13b made of a disk is provided at the upper end. Suction port 13c on the upper surface of the lid
One end of the suction air passage 1 is opened via a filter F, and the other end is connected to a suction blower device (not shown). A transport path 2 for transporting articles such as rice is penetrated through a transport port 13d to a side wall of the apparatus main body 13a in a direction intersecting with an extension of the suction air path.

Between the suction port 13c and the transport port 13d, the first is such that the transport path is left perpendicular to the extension direction and the lower end substantially corresponds to the center position on the extension of the transport path.
An airflow control plate 11a protrudes downward from the lower surface of the lid 13b.

That is, the U-shaped mounting piece 1 is provided on the upper surface of the lid 13b.
1f is fixed, and a fixing plate 11a penetrates through the lid and hangs down from the lower end. The fixing plate 11a extends in a vertical plane and is fixed between the side walls on the diameter of the main body 13a.

The movable plate 1 is guided by the fixed plate 11a.
1b is slidable up and down. The movable plate 11b has a movable main body 11c having substantially the same shape and size as the fixed plate 11a, and the lower end thereof is an inclined surface 11d on the suction port 13c side. Further, an L-shaped bent portion 11e is integrally formed on the upper end of the movable main body 11c on the side of the transport port 13d. The lower portion of the adjusting screw rod 14 vertically passing through the upper portion of the mounting piece 11f is vertically screwed through the bent portion 11e.

The second airflow control plate 12 is connected to the first airflow control plate 11 so as to sandwich the suction port 13c together with the first airflow control plate 11.
Protruding at a predetermined angle (45 degrees in the figure) with respect to the airflow control plate 11, the tip is separated from the first airflow control plate by a predetermined minute distance, and a slit (gap) G is formed. I have. The second airflow control plate 12 is firstly moved from the lower surface of the lid 13b.
It is inclined toward the lower end of the airflow control plate 11 and is fixed between both side walls of the main body. In this way, both control boards 1
An intermediate section C is defined between sections 1 and 12 and between both side walls of the main body. The upper part of the second airflow control plate 12 is a perforated plate 12b such as a wire mesh.

Here, as the means for changing the distance between the first airflow control plate 11 and the second airflow control plate 12, the adjusting screw rod 14 is used.

Inside the apparatus main body 13a, there is provided a cushioning material 15 for buffering scattering of articles (rice, etc.) or falling. A metering / discharging member 16 is provided at a lower end of the main body, and a rubber plate serving as a biting prevention member 17 is provided at a slight interval at an upper end thereof. The weighing / discharging member 16 is a known one, and as shown in FIG.
Are concentrically fixed, and a plurality of partition plates 16c are provided at equal intervals radially from the rotation shaft 16a. And 1 between the partition plates
When the section matches the outlet at the lower end of the main body, rice enters the section and the rice is discharged by rotation.

In FIG. 6, the rice discharging device B includes a second airflow transporting device 20 having a transporting path 2A from the rice box A connected to the upper portion.
An air suction pipe 1A connected to the upper surface of the second airflow transport device, a rice discharge nozzle 41 connected to the lower end of the airflow transport device 20, and a shutter 42 for opening and closing the passage of the discharge nozzle. .

The second airflow transport device 20 is basically the same as the first airflow transport device 10. That is, in FIG. 6, the lower part of the rectangular cylinder main body 23 having the vertical axis is reduced in a pyramid shape, and the lid 23b is provided at the upper end. One end of the suction air passage 1A is opened on the upper surface of the lid, and the other end is connected to the suction blower device 31 of the rice box A via the air branching member 5. Intersects (almost orthogonal) with the suction air passage 1A
In this direction, a transport path 2A for transporting articles such as rice is penetrated and connected to the side wall of the apparatus main body 23a. The end of the conveying path is connected to the measuring and discharging member 32 of the first airflow conveying device 10.

The first airflow control plate 21 is positioned between the suction air passage 1A and the conveyance passage 2A, is perpendicular to the conveyance passage, and has a cover 23 so that the front end substantially corresponds to the center position of the conveyance passage.
b protrudes downward from the lower surface and is fixed between the side walls on the diameter of the main body.

The second airflow control plate 22 is connected to the first airflow control plate 22 so as to sandwich the suction air passage 1A.
Protruding from the airflow control plate 21 at a predetermined angle,
The leading end is separated from the first airflow control plate 21 by a predetermined minute distance to form a gap (gap) G. The second airflow control plate 22 is moved from the lower surface of the lid 23b to the first airflow control plate 21.
And is fixed between both side walls of the main body. In this way, an intermediate section C defined between the control plates 21 and 22 and the side walls of the main body is formed.

Inside the main body of the apparatus, there is provided a cushioning material for buffering scattering of articles (rice, etc.) or falling. A discharge nozzle 41 is provided at the lower end of the main body, and a shutter 42 is provided at the root thereof. The air cylinder 43 connected to the suction air path 1D from the air branch member 5 allows the shutter 4
2 is opened and closed.

The operation state will be described above. Rice chest 1
When the air suction device 31 of A is activated, the first airflow control plate 11 and the second airflow control plate 1 of the first airflow conveyance device 10 are activated.
2, the suction air becomes a film,
By the narrowing of the air by the two, the air in the transport path becomes an eddy (spiral) airflow.

The reason for the vortex is considered as follows. In FIG. 7, the air flow has a gap G at the boundary between the first and second control plates as a base, and a transport port 13d and a suction port 13c.
To form two triangular films with. The flow velocity V1 on the center line of the triangular transport path is larger than the flow velocity V2 on both hypotenuses of the triangle. Due to these speed differences, stress (strain) is generated in the airflow film, which is transmitted as a vortex into the transport path, and generates a screw (spiral) airflow that advances in the axial direction in the transport path.

Therefore, the rice in the rice bag 3 is efficiently sent by the vortex in the transport path 1 and introduced into the main body 13a of the rice box A. And escape from the airflow film, the first
The vehicle decelerates by colliding with the airflow control plate 11 or the cushioning material 25,
It is dropped and stored at the bottom of the main body.

Next, when rice is cooked, when the switch 6 of the rice discharging device B is turned on, the air suction device 31 of the rice box A is activated, and the second airflow transporting device 20 of the rice discharging device B is turned on by the first airflow transporting device 10. Works the same as. Air is drawn out from the suction air passage 1A, and the first airflow control plate 21 and the second airflow control plate 22 convert the suction air into a film-like shape. The air becomes a vortex. Therefore, the rice in the rice box A is efficiently sent by the eddy current in the transport route,
It is introduced into the main body 23 of the rice discharging device B. Shutter 42
Is the air suction device 31 via the suction path 1B and the branching member 5.
It is opened and closed by.

In FIG. 5, the thickness t of the movable plate 11b
= 10 mm, and the distance (gap G) between the surface and the second control plate 12 is set to 0.5 mm, which is the minimum gap. Then, when the adjusting screw rod 14 is turned to raise the movable plate 11b, the interval between the inclined surface 11d and the second control plate 12 is increased, and the flow rate of the airflow therebetween is increased. When the movable plate 11b is at the upper limit position, the fixed plate 11a and the second
The distance from the control plate 12 is 10.5 mm, which is the maximum gap. When the value of the gap G is insufficient with respect to the required flow rate, the perforated plate portion 12b serving as an auxiliary flow channel provided in the second control plate 12 responds.

Next, experimental results when rice is transported in an eddy current by the method and apparatus of the present invention will be described. The diameter D of the device body 13a is 400 mm, the length H of the first control plate 11 hanging from the device lid 13b is 100 mm, the angle R of the second control plate 12 with respect to the first control plate 11 is 45 degrees,
Gap G = 0.5 mm of the second control plates, the opening diameter d ₁ = 38mm of the transport path, the distance h ₁ = 100 mm than the lid 13b,
Suction air path opening diameter d ₂ = 38 mm, capacity of air suction device 1.5 m ³ / min.

FIG. 8 shows an embodiment in which the opening position of the conveying path 2 can be adjusted up and down. The transport port 13d is formed by a vertically extending elongated hole. A mounting plate M made of a rubber plate is fixed to the end of the transport path 2 so as to penetrate the opening. Then, the mounting plate M is detachably mounted on the main body 13a with bolts covering the transport opening 13d. The vertical length of the mounting plate is considerably longer than that of the long hole 13d, and the mounting position can be changed vertically by the length. Slot 13d
Are provided with a plurality of bolt holes so that the mounting position can be changed.

If the position of the transfer path 2 is raised, the angle between the direction of the air flow from the transfer path to the lower end of the first control plate 11 and the direction of the air flow therefrom to the suction air path is, for example, about 90 degrees. Then, the air flow changes direction largely (about 90 degrees), and the degree of separation of the conveyed material from the air flow becomes extremely large.
Therefore, for example, lightweight objects such as powder and tea leaves are also efficiently separated, and the second control plate 12 and the filter F are not required on the suction port 13c side.

As described above, when the degree of the air flow direction change is large, the fluid resistance at the turning portion increases, and the flow rate of the air flow decreases, so that the transport amount (capacity) decreases.

Conversely, when the position of the transport path is lowered, the degree of the direction change of the airflow from the transport path to the suction port is reduced, and the transport capacity is increased. Practically, the range where the air flow from the conveyance path to the lower end of the first control plate and from there to the suction air path has a maximum angle of about 120 degrees (direction change of about 60 degrees) is superior.

In the above embodiment, the lower end of the first control plate 11 is straight and the gap G is also straight, and the airflow film has a flat shape on the side of the conveying path and on the side of the suction air path. But,
It is not always necessary to do so. For example, as shown in FIG. 9, an arc may be formed at the boundary between the first and second control plates 11 and 12, and a curved film is formed accordingly. . Also, as shown in FIG. 10, in the case of a triangular-shaped gap, a triangular-shaped film corresponding to the gap is formed. As a result, the spread width of the film (length in the direction orthogonal to the center flow direction of the airflow) increases, and the degree of spiral airflow generation in the transport path increases. Thus, other forms of gaps G may be applied.

Regarding the formation of the airflow film, FIG.
As described above, two control plates 11 and 12 are provided on the other side wall of the apparatus main body 13a at an angle to each other so as to leave a gap G therebetween. in this case,
The airflow film does not divert the flow. Also in this case, a spiral airflow is generated in the transport path.

FIG. 12 shows two control plates 11 and 12 opposed to each other on one plane and approached with a gap G left therebetween.
Alternatively, a slit (a long hole) corresponding to the gap G in one plate
May be provided.

FIG. 13 shows a state in which the conveyance path and the suction air path are connected to the main body of the apparatus with a single plate as a boundary, with the conveyance path and the suction air path formed at an angle to each other or substantially in a straight line.
Also in this case, an airflow film is generated.

As described above, the present invention also includes the following three airflow conveying methods. (1) A plate-like member is protruded from a wall surface in a section, and with the plate-like member as a boundary, the conveyance path and the suction air path are formed at an angle to each other or substantially in a straight line so as to face each other. An air flow conveying method, wherein the air flow is formed by connecting to a wall and circulating air over the tip of the plate-shaped member to form an air film. (2) A plate-like member having a slit is provided on a wall surface in the section,
With the plate-shaped member as a boundary, the conveying path and the suction air path are connected to the partition wall at an angle to each other, or substantially in a straight line, and are connected to the partition wall. An airflow conveying method, wherein an air film is formed through a slit. (3) A conveyance path is connected to one wall of the section, and a suction air path is connected to the other wall of the section on a line intersecting an extension of the conveyance path, near a position where the extension lines of both paths intersect. And a control plate having a slit disposed therein, air is circulated through the slit to form an air film, and the air flow in the air film is changed in direction at the slit.

FIGS. 14, 15 and 16 show embodiments of the first and second airflow conveying devices particularly suitable for conveying powder such as flour, but it is needless to say that the present invention can also be applied to grains such as rice.
The apparatus main body has a substantially rectangular parallelepiped shape with the upper wall horizontal, and the upper part of the side wall opposite to the side where the transport path 2 is connected is inclined toward the transport path 2 and connected to the upper wall. The first control plate 21 is made of three, to the extension line L ₂ on the wall position inflow inner surface of the transport path 2, the left plate 21a is h _1, the middle plate 21b is h _2, the right plate 21c is h ₃ above There is a lower end in the position. The second control plate 22 at right angles to the first control plate 21 comes close to exist a gap (slit) G, the slit G is positioned higher by h ₃ from the extended line L _2. The lower end of the right plate (adjustable movable plate) 21c is 4
The tip of the second control plate 22 that is inclined at 5 degrees and approaches it is inclined at 45 degrees upward with respect to the horizontal plane. Also, the second
The control plate 22 also serves as the upper wall of the apparatus main body. The intermediate section C is formed by the first control plate 21, the second control plate 22, and the auxiliary plate 23 immediately above the gap G and above the upper wall of the apparatus main body. The suction air path 1 is vertically connected to the center of the upper surface.

When the powder is conveyed in this embodiment, the conveying path 1
The spiral airflow in the inside becomes a film between the first control plate 21 and the direction is changed from the left plate 21a to the middle plate 21b to separate a part of the powder. Then the middle plate 21b is diverted by a large angle between the distance h ₃ extending into the gap (slit) G between the second control plate 22, most of the powder is separated somewhat horizontally, of the device body It collides with the inclined wall and is turned downward. Therefore, the amount of powder discharged from the suction air passage 1 through the gap G is extremely small, and it is not necessary to provide a filter.

Next, the experimental results will be described. The dimensions (unit: mm) of the model device used are shown in FIGS.
The experimental results of the powder separation performance are shown in Table 1.

Now, the characteristics of the airflow in the present invention will be considered. In a general swirling flow, the velocity distribution is slow and valley-shaped at the center as shown in FIG. On the other hand, in the "spiral flow" of the present invention, as shown in FIG. 19, the velocity distribution is steep in the flow direction and has a mountain shape, and the axial flow velocity Vz is extremely fast at the center of the pipe, and is near the pipe wall. slow.

Therefore, such a "spiral flow"
The features of the airflow transfer system using the following are as follows.
Due to the velocity distribution, the pressure at the center of the pipe is lower than that at the pipe wall,
The conveyed material is drawn to the center of the pipe. For this reason, the transported object has less collision with the inner wall of the pipe and has less wear. Due to the velocity distribution, the loss of the flow due to the wear between the air and the pipe wall is small, and the vortex is hard to disappear. For this reason, transport over a long distance becomes possible. Unlike the pressure feeding method, it is a suction method, and therefore, even if a conveyed substance (eg, powder or granules) is clogged in the pipe, it is easily removed and hardly clogged. Even fine powder (or liquid fine particles) can be separated from air without a filter (no clogging).

FIG. 17 shows still another embodiment. When the lower end of the first control plate 21 is inclined toward the slit G, the angle at which the airflow passing through the lower end changes its direction along the lower end inclined surface becomes larger. , Separation performance is increased. Further, facing the auxiliary slits G ₁ , G _2, ..., The upstream side edges of the slits become descending surfaces J ₁ , J _2, ..., And from their tapered lower ends, rise surfaces K ₁ , K ₂ ,. A rectifying member 24 reaching the downstream edge of the slit is provided. Thereby, the distance is maintained from the direction change point of the flow path to the slits G ₁ , G _2, ..., The degree of powder reaching the slits is reduced, and the separation performance is improved.

Here, the passage area of the suction air passage 1 is defined as S ₁ ,
The flow path area of the slit G (G ₀ , G ₁ , G ₂ ,...) Is Sg,
Assuming that the passage area of the transport path 2 is S ₂ , approximately S ₁ ≧ Sg ≧
It is desirable that the relationship S ₂ is satisfied.

The present invention is applicable to pneumatic conveyance of cereals, granules, powders or fine particles.

The present invention is not limited to the examples and embodiments described above, but includes various modifications without departing from the spirit and scope of the claims.

[0052]

According to the present invention, rice can be transported from rice bags to the kitchen by the vortex airflow transport device, so that heavy rice bags, which have been heavy labors for housewives, can be eliminated and household labor can be reduced.

By the first and second airflow control plates, the air at the end of the conveyance is formed into a band (film) and a slight gap is formed between the control plates. Can be reliably separated, so that there is no need to provide a filter for separating the articles, and the configuration can be simplified.

[Brief description of the drawings]

FIG. 1 is a schematic overall perspective view of one embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is a vertical sectional view of one embodiment of the present invention.

FIG. 4 is a perspective view of a main part of FIG. 1;

FIG. 5 is an enlarged view of a main part of FIG. 1;

FIG. 6 is a large perspective view of each main part of FIG. 1;

FIG. 7 is an operation explanatory view of the present invention.

FIG. 8 is a view showing another embodiment of the transport path connecting portion.

FIG. 9 is a perspective view of another embodiment of the control plate.

FIG. 10 is a perspective view of another embodiment of the control plate.

FIG. 11 is a view showing a state in which a control plate is attached.

FIG. 12 is a view showing a state in which a control plate is attached.

FIG. 13 is a view showing a state in which a control plate is mounted.

FIG. 14 is a plan view of an embodiment of the powder conveying device.

FIG. 15 is a vertical sectional view of the embodiment of the powder conveying device.

FIG. 16 is an enlarged view of a main part of FIG.

FIG. 17 is a view showing another embodiment near the slit.

FIG. 18 is an explanatory diagram of a conventional swirling flow.

FIG. 19 is an explanatory diagram of a spiral flow of the present invention.

[Explanation of symbols]

 A Rice case B Rice discharge device C Intermediate section F Filter G Gap slit 1 Suction air path 2 Transport path 10 First air flow transport device 11 First air flow control plate 11a Fixed plate 11b Movable plate 11c Main body 11d Inclined surface 11e Bend 11f Mounting Piece 12 second air flow control plate 12a main body 12b perforated plate 13 device casing 13a main body 13b lid 13c suction port 13d transport port 14 distance changing means 15 buffer material 16 metering / discharging member 17 biting prevention member 20 second air flow transport device 21 1st control board 21a left board 21b middle board 21c right board 22 second control board 23 auxiliary board

[Table 1]

Claims (7)

(57) [Claims] 1. A rice box which receives and stores rice cereal from an upper portion through a transport path from a rice bag, and stores and discharges the rice grain from a lower portion. A rice discharging device capable of discharging the rice, the rice box has an air flow conveying device connected to the upper part of a conveying path from the rice bag, an air suction device connected to the upper surface of the air flow conveying device, and a weighing and discharging member. The rice discharging device is connected to an air flow transfer device having a transfer path from the rice box connected to an upper portion, an air suction pipe connected to an upper surface of the air flow transfer device, and a lower end of the air flow transfer device. The two airflow transfer devices include a rice discharge nozzle and a shutter that opens and closes a passage of the discharge nozzle. The two airflow transfer devices each have a substantially cylindrical device main body, and one end is opened on an upper surface of the device main body, and the other end is absorbed. A suction air passage connected to the blower device; On the other hand, in a direction intersecting, a transport path for transporting the article penetratingly connected to the side wall of the apparatus main body, between the suction air path and the transport path, is perpendicular to the transport path, and the leading end is substantially the transport path A first airflow control plate protruding to correspond to the center position of the first airflow control plate, and projecting at a predetermined angle with respect to the first airflow control plate so as to sandwich the suction air passage together with the first airflow control plate. And a second airflow control plate having a tip separated from the first airflow control plate at a predetermined distance to form a slit. 2. The rice grain conveying apparatus according to claim 1, further comprising a distance changing unit between the first airflow control plate and the second airflow control plate. 3. An intermediate section located on the upper and inner sides of the apparatus main body between the first and second airflow control plates and both side walls and the upper wall of the apparatus main body. 3. The rice cereal transport apparatus in a house according to 1 or 2. 4. The second airflow control plate is mounted on an upper wall of the apparatus main body.
Double use, just above the slit and above the upper wall of the device body
The first airflow control plate and the auxiliary plate are provided on the side, and the first and second airflow control plates and the auxiliary plate form an intermediate section located above and outside the apparatus main body. Item 3. The rice grain conveying device in a house according to Item 1 or 2. 5. The rice in a house according to claim 1, wherein the second airflow control plate is provided with one or more auxiliary slits corresponding to a flow rate of a suction air passage. Grain transporter. 6. The slit according to claim 1, wherein a slit formed by the first airflow control plate and the second airflow control plate is located above a lower end of the first airflow control plate. Or the rice cereal transport device in a house according to 5. 7. The apparatus according to claim 1, wherein the apparatus main body has a substantially rectangular parallelepiped shape, and an upper portion of a side wall opposite to the side of the transport path is inclined toward the side of the transport path and is continuous with an upper wall. Or the rice cereal transport apparatus in a house according to 3 or 4 or 5 or 6.