JP7614556B2 - Insecticide and sterilization device and method - Google Patents

Description

This disclosure relates to insect and sterilization devices and methods.

Steam sterilization equipment has been developed to sterilize grains.

For example, Patent Document 1 discloses a superheated steam sterilizer having multiple stirring blades formed around a rotating shaft inside a horizontal cylindrical section.

JP 2019-180679 A

In the superheated steam sterilization device described in Patent Document 1, the arrangement angles of the multiple stirring blades are set to three or more to prevent uneven contact between the superheated steam and the grains. This requires increasing the number of times the superheated steam comes into physical contact with the grains, which results in a larger horizontal cylindrical section and a relatively long time required to sterilize the entire grain.

This disclosure has been made in consideration of the above-mentioned circumstances, and aims to provide an insecticidal and sterilizing device and method that can efficiently perform insecticidal and sterilizing treatment of grains.

In order to achieve the above object, the insect killing and sterilization device according to the present embodiment is provided with a hydration section capable of accommodating grains and water. The insect killing and sterilization device according to the present embodiment is provided with an injection member capable of injecting water into the hydration section, which is formed by a top plate section forming an upper surface, a side section forming a side surface, and a funnel section forming a lower portion, and when the injection member is connected to the side section, the injection member is connected to the range of the side section up to the contact point between the upper surface of the stacked grains and the inner wall of the side section when the grains are stacked inside the hydration section. The insect killing and sterilization device according to the present embodiment is provided with a heating section connected to the hydration section and injecting steam into at least a portion of the water applied to the grains , and a drying section that blows air toward at least one of the grains, water, and steam transported from the heating section.

The insecticidal and sterilizing device and method disclosed herein can realize an insecticidal and sterilizing device and method that can efficiently kill and sterilize grains.

1 is a schematic perspective view of an insect-killing and sterilizing device according to an embodiment of the present invention; Partial I-I' cross-sectional view of the insecticidal and sterilizing device according to the present embodiment. (A) is a diagram showing a hydration unit provided in the insect-killing and sterilizing device of the present embodiment, which is a schematic top view of the hydration unit provided with a plurality of first nozzles; (B) is a diagram showing a hydration unit provided in the insect-killing and sterilizing device of the present embodiment in which grains are stored, which is a schematic perspective view of the hydration unit provided with a plurality of first nozzles; Partial cross-sectional view of FIG. 3 along line II-II' FIG. 2 is a schematic partial cross-sectional view of the water supply unit of the insect killing and sterilizing device according to the present embodiment, illustrating an example in which a plurality of first nozzles are provided on the side of the housing; FIG. 2 is a schematic partial cross-sectional view of the hydration unit of the insect-killing and sterilizing device according to the present embodiment, illustrating an example in which a plurality of first nozzles are provided on the top plate of the housing; FIG. 1 is a schematic perspective view showing a second cylindrical portion of a drying unit provided in an insect-killing and sterilizing device according to an embodiment of the present invention; FIG. 1 is a cross-sectional view of an insect-killing and sterilizing device according to an embodiment of the present invention, taken along the line I-I′, illustrating a form in which a dehydration unit is provided. FIG. 1 is a cross-sectional view of an insect-killing and sterilizing device according to an embodiment of the present invention, taken along the line I-I', illustrating an embodiment in which a blade portion is provided instead of a spiral portion. FIG. 1 is a cross-sectional view of an insect-killing and sterilizing device according to an embodiment of the present invention, taken along the line I-I', illustrating a configuration in which a partition plate is provided inside the foreign body receiving section. FIG. 2 is a schematic partial cross-sectional view of the water supply unit of the insect killing and sterilizing device according to the present embodiment, illustrating an example in which a plurality of first nozzles are provided on the top plate and side of the housing;

An example of an insect-killing and sterilizing device 1 according to this embodiment will be described below with reference to the drawings. As shown in FIG. 1, an XYZ coordinate system is set up, with the height direction of the insect-killing and sterilizing device 1 as the Y-axis direction, the extension direction of the insect-killing and sterilizing device 1 as the X-axis direction, and the direction perpendicular to the XY axes as the Z-axis direction, and this will be used appropriately in the description. Also, the thickness and dimensions of each component will be omitted as appropriate for the sake of explanation.

(Embodiment 1)
As shown in Figures 1 and 2, the insecticidal and sterilizing device 1 includes a hydration section 10 capable of accommodating grains and water, a heating section 19 connected to the hydration section 10 and for injecting steam onto at least a portion of the water added to the grains, and a drying section 30 for blowing air toward at least one of the grains, water, and steam conveyed from the heating section 19. In this specification, "steam" refers to water vapor. Furthermore, "injection" includes spraying. Furthermore, "grain" refers to granular materials such as rice, wheat, and the like.

As shown in FIG. 1, the water adding unit 10 includes a housing 11, a tank section 17 in which water is stored, and a first nozzle 18 for spraying the water from the tank section 17 into the inside of the housing 11.

The housing 11 is a member that forms the outer shell of the hydration unit 10. The housing 11 is a box formed by combining a top plate 12, a side surface 13 that forms the side, and a funnel 14 that forms the lower part.

The top plate 12 is a plate-like member with an opening for feeding grains, and forms the upper surface of the housing 11. An opening is formed in the top plate 12, and a tubular member is connected to this opening as a grain feeding path.

The side portion 13 is a member formed by erecting one or more plate-shaped members. The upper end of the erect side portion 13 is connected to the top plate portion 12.

The funnel portion 14 is a tapered hollow member, and the upper end of the funnel portion 14 is connected to the lower end of the upright side portion 13. The funnel portion 14 also narrows toward the tip of at least one of the grain and water discharge sides (the lower end of the funnel portion 14). From the narrowed lower end of the funnel portion 14, the tubular portion 15 extends to the heating portion 19. A discharge valve may be provided as appropriate at the point where the funnel portion 14 begins to narrow.

The tubular section 15 is mainly used to transport at least one of a fixed amount of grain and water to the heating section 19 described below. Between the upper and lower ends of the tubular section 15, a valve 16, such as a rotary valve, capable of adjusting the amount of at least one of the grain and water being transported is provided, and at least one of the grain and water passes through the tubular section 15 and the valve 16, thereby transporting a fixed amount of at least one of the grain and water from the extending tip to the heating section 19. Note that the valve 16 may be connected to the upper part of the housing 11 instead of being connected to the tubular section 15.

A first nozzle 18 is connected to at least one of the top plate portion 12, the side portion 13, and the funnel portion 14.

The tank portion 17 is a member that stores water to be sprayed inside the housing 11. A tubular member is connected to the tank portion 17, and the water inside the tank portion 17 is transported through the tubular member to the first nozzle 18 by a pump mechanism (not shown), and the water is sprayed from the nozzle of the first nozzle 18 into the inside of the housing 11.

The first nozzle 18 is a member that is connected in one or more units, and is an injection member that can inject water into the inside of the housing 11 of the water adding unit 10. The first nozzle 18 is connected with one end (the injection port side) of the first nozzle 18 protruding into the inside of the housing 11. The other end of the first nozzle 18 is connected to the tank unit 17 in which water is stored, via a tubular member that serves as a water flow path from the tank unit 17.

From the viewpoint of thoroughly covering the entire surface of the grain with water and efficiently killing insects and sterilizing the grain, it is preferable that the mass of water relative to the mass of the grain is 5% by mass or more and 10% by mass or less.

From the viewpoint of efficiently killing insects and sterilizing grains, the temperature of the water sprayed onto the grains is preferably 10°C or higher and 80°C or lower, more preferably 20°C or higher and 80°C or lower, and even more preferably 30°C or higher and 80°C or lower. The water is heated by a heater (not shown).

As shown in Figures 3(A) and (B), when the first nozzles 18 are connected to the side portion 13, in the case where four first nozzles 18 are used as an example, it is preferable that the nozzles of each of the first nozzles 18 are provided opposite the surface of the layered trajectory formed by the falling transport of the grain.

As shown in FIG. 4, when the first nozzle 18 is connected to the side portion 13, it is preferable that the first nozzle 18 is connected to the range (L) of the side portion 13 up to the contact point between the top surface of the stacked grains and the inner wall of the side portion 13 when the grains are stacked inside the hydration section 10. For example, it is preferable that the first nozzle 18 is connected to the range (L) from the top end of the side portion 13 when viewed from the front to the contact point between the top surface of the stacked grains and the inner wall of the side portion 13 when a predetermined amount of grains is stored inside the housing 11.

The angle of the water spray from the first nozzle 18 is adjusted so that the angle (θ1) between the apex (A) of the stacked grains, the contact point (B) between the grains and the inner wall of the side portion 13, the adjacent sides AC and BC that form the hypotenuse AB, and 1/2 the angle of the water spray from the first nozzle 18 (for example, the angle θ2 between ∠DEF) is θ1≦θ2≦90°.

In addition, inside the housing 11, the grains are dropped from the top to the bottom of the housing 11, and the grains are dropped while forming a layered (columnar) trajectory. Therefore, when the first nozzles 18 are connected to the side portion 13, it is preferable that the first nozzles 18 are connected with rotational symmetry when viewed from above or below. For example, it is preferable that two first nozzles 18 are connected with 180° rotational symmetry when viewed from above or below, it is more preferable that three first nozzles 18 are connected with 120° rotational symmetry, and it is even more preferable that four first nozzles 18 are connected with 90° rotational symmetry.

As shown in FIG. 5, the range of angles that the first nozzle 18 can take with respect to the axis of the direction in which the grains are transported is 0°≦θ3<180° when the top surface of the stacked grains is horizontal, and 0°≦θ3≦(90°+θ1) when the stacked grains form a cone.

In addition, when the top surface of the stacked grains is horizontal, the angle that the first nozzle 18 can take with respect to the axis of the direction in which the grains fall and are transported becomes more preferable as it approaches 180°, for example, when 0° is used as the base angle.

In addition, when a cone is formed by stacking grains, the angle that the first nozzle 18 can take with respect to the axis of the direction in which the grains fall and are transported becomes more preferable as it approaches (90° + θ1), for example, when 0° is used as the base angle.

As shown in FIG. 6, when one or more first nozzles 18 are connected to the top plate 12, the possible angle range of the first nozzle 18 with respect to the axis of the direction in which the grains are dropped and transported can be in the range of 0°≦θ3<180° when the top surface of the stacked grains is horizontal. Here, when the angle range is 0°≦θ3<90°, the first nozzle 18 is connected to the housing 11 ((A) and (B)), and when the angle range is 90°≦θ3, the first nozzle 18 is connected to the housing 11 via a tubular member connected to the first nozzle 18 ((C) and (D)).

By providing the insecticidal and sterilizing device 1 with the water adding section 10 as described above, even if the size of the insecticidal and sterilizing device 1 is changed, the grain can be efficiently insecticidal and sterilized without excessively heating the grain with the heating section 19 described below. In addition, a water layer can be formed over the entire surface of the grain, and the formation of an excessively thick water layer can be prevented, so the effectiveness of the insecticidal and sterilizing treatment can be improved with the heating section 19 described below, and the grain can be efficiently insecticidal and sterilized.

As shown in Figures 1 and 2, the heating unit 19 is a member connected to the hydration unit 10 and injects steam into at least a portion of the water added to the grain. The heating unit 19 includes a first cylindrical unit 20 extending horizontally, a first rotating member 21 housed in the first cylindrical unit 20, and an injection unit 22 that injects heated steam into the internal space of the first cylindrical unit 20.

The first cylindrical section 20 is a member having a hollow body section 20a and cover sections 20b that cover the openings at both ends of the body section 20a. The lower end of the tubular section 15 of the hydration section 10 is connected to the upper portion of one end of the first cylindrical section 20. The lower portion of the other end of the first cylindrical section 20 is connected to the drying section 30, which will be described later.

The first rotating member 21 is a member that can be housed in the first cylindrical portion 20, and includes a first rod-shaped member 23 having a rotation axis (longitudinal axis) and a first helical portion 24 provided around the first rod-shaped member 23. The screw formed by the first rod-shaped member 23 and the first helical portion 24 exhibits a function similar to that of, for example, an Archimedes screw.

The first rod-shaped member 23 is a member having a rotation axis. When the first rod-shaped member 23 is housed in the first cylindrical portion 20, the rotation axis of the first rod-shaped member 23 and the longitudinal axis of the first cylindrical portion 20 coincide or approximately coincide. The rotation of the first rod-shaped member 23 is controlled by a drive mechanism (not shown). In this specification, "rotation" includes rotation.

The first spiral portion 24 is a spiral protrusion provided on the circumferential surface of the first rod-shaped member 23 along the longitudinal axis of the first rod-shaped member 23. The first spiral portion 24 has an evenly spaced pitch that allows a sufficient amount of heated steam to be sprayed onto at least a portion of the water added to the grains conveyed from the water adding section 10.

The first rod-shaped member 23 and a part of the first spiral section 24 are disposed at the bottom of the tubular section 15. This allows the grain sprayed with water to be efficiently transported from the water adding section 10 to the heating section 19.

The injection unit 22 is a member for injecting heated steam into the internal space of the first cylindrical portion 20, and is a member formed by one or more second nozzles 25. The water injected from the second nozzle 25 of the injection unit 22 is heated in a heating tank (not shown) and is connected to the second nozzle 25 via a tubular member that serves as a water flow path. In this embodiment, an insecticidal and sterilizing device 1 equipped with two injection units 22 will be described as an example.

From the viewpoint of efficiently killing insects and sterilizing grains, the temperature of the water sprayed onto the grains from the spray unit 22 is preferably 200°C or higher and 400°C or lower, more preferably 200°C or higher and 300°C or lower, and even more preferably 200°C or higher and 250°C or lower.

In addition, from the viewpoint of efficiently killing insects and sterilizing grains, the duration of each spray of water sprayed from spray unit 22 onto the grains is preferably 3 seconds or more and 7 seconds or less, and more preferably 3 seconds or more and 5 seconds or less.

The drying section 30 is a member connected near the lower portion of the other end of the first cylindrical section 20, and blows air toward at least one of the grain, water, and steam transported from the heating section 19, to dry the grain. The drying section 30 includes a second cylindrical section 26 disposed at the lower portion of the first cylindrical section 20, a second rotating member 27 housed in the second cylindrical section 26, and an air blowing section 28 that blows heated air into the internal space of the second cylindrical section 26.

The second cylindrical portion 26 is a member having a hollow body portion 26a and a cover portion 26b that closes the openings at both ends of the tube of the body portion 26a. The longitudinal direction of the second cylindrical portion 26 and the axial direction of the first cylindrical portion 20 are the same or approximately the same direction, and the vicinity of the upper part of one end side of the second cylindrical portion 26 is connected to the vicinity of the lower part of the other end side of the first cylindrical portion 20 via a connecting member. The vicinity of the lower part of the other end side of the second cylindrical portion 26 is provided with an outlet portion 40 for dried grain. The inner diameter of the second cylindrical portion 26 is set to be larger than the inner diameter of the first cylindrical portion 20.

The body 26a is a member that defines the outer contour of the second cylindrical portion 26, and has multiple slits that penetrate from the inner surface to the outer surface of the body 26a. The body 26a is formed of two members that are symmetrical with respect to the mating surface, and when combined with each other, they form a hole with a circular cross section in which the second rotating member 27 is housed, as shown in Figure 7.

As shown in FIG. 2, a foreign object receiving section 29 is provided at the bottom of the second cylindrical section 26, which receives foreign objects that pass through the slits in the second cylindrical section 26 and appropriately transports them outside the insecticidal and sterilizing device 1. In this specification, "foreign objects" mainly refers to debris.

The second rotating member 27 is a member that can be housed in the second cylindrical portion 26, and includes a second rod-shaped member 31 having a rotation axis (longitudinal axis) and a second helical portion 32 provided around the second rod-shaped member 31. The screw formed by the second rod-shaped member 31 and the second helical portion 32 also functions similarly to, for example, an Archimedes screw.

The second rod-shaped member 31 is a member having a rotation axis. When the second rod-shaped member 31 is housed in the second cylindrical portion 26, the rotation axis of the second rod-shaped member 31 and the longitudinal axis of the second cylindrical portion 26 coincide or approximately coincide. The rotation of the second rod-shaped member 31 is controlled by a drive mechanism (not shown). The outer diameter of the second rod-shaped member 31 is designed to be the same as the outer diameter of the first rod-shaped member 23 or smaller than the outer diameter of the first rod-shaped member 23. The drive mechanism may control both the first rod-shaped member 23 and the second rod-shaped member 31.

The second helical portion 32 is a helical protrusion provided on the circumferential surface of the second rod-shaped member 31 along the longitudinal axis of the second rod-shaped member 31. The second helical portion 32 has a pitch that allows a sufficient amount of heated air blown from the air blowing section 28 (described later) to be directed at at least a portion of the water applied to the grains conveyed from the heating section 19.

The outer diameter of the rotating body formed by the second rod-shaped member 31 and the second helical portion 32 is the same as or larger than the outer diameter of the rotating body formed by the first rod-shaped member 23 and the first helical portion 24.

The air blowing section 28 is a member for blowing heated air into the internal space of the second cylindrical section 26. For example, a blower can be used as the air blowing section 28. The air blowing section 28 is connected to an air heating section (not shown), and from the viewpoint of efficiently drying the grains, it is preferable that the air blowing section 28 blows air at a temperature of 30° C. or more and 80° C. or less and at an air volume of 50 m ³ /min or more and 90 m ³ /min or less.

(Embodiment 2)
In the first embodiment, the insecticidal and sterilizing device 1 in which the heating section 19 and the drying section 30 are connected has been described. Here, the insecticidal and sterilizing device 1 further including the dehydrating section 33 will be described with reference to the drawings. Note that the description of the same parts as those in the first embodiment will be omitted as appropriate.

As shown in FIG. 8, the insecticidal and sterilizing device 1 has a dehydration section 33 between the heating section 19 and the drying section 30.

The dehydration section 33 is a component that separates at least one of water and steam from the surface of the grain transported from the heating section 19 by centrifugation.

The dehydration section 33 includes a small housing 34 connected to the heating section 19, a large housing 35 connected to one end of the small housing 34, communicating with the small housing 34, and connected to the drying section 30, and a third rotating member 36 housed inside the small housing 34 and the large housing 35. Here, the inner diameter of the small housing 34 is smaller than the inner diameter of the large housing 35. In addition, the housing unit formed by the small housing 34 and the large housing 35 is arranged in the same axial direction as the height direction of the insecticidal and sterilizing device 1, with the small housing 34 connected to the top of the large housing 35.

The small housing 34 is a member having an opening through which the grain transported from the heating unit 19 is poured. Therefore, the grain transported by the first rotating member 21 can be transported into the small housing 34 via the connection point with the drying unit 30 in embodiment 1, which is located on the other end side of the first cylindrical unit 20.

The large housing 35 is a member having an opening for transporting the dehydrated grain to the drying section 30 and a discharge section for discharging the dehydrated water to the outside of the insecticidal and sterilizing device 1. Therefore, grain can be transported to the inside of the drying section 30 via the connection point with the first cylindrical section 20 in embodiment 1, which is located on one end side of the second cylindrical section 26.

The third rotating member 36 is a member that can be housed in the small housing 34 and the large housing 35, and includes a third rod-shaped member 37 having a rotation axis (longitudinal axis) and a third spiral portion 38 provided around the third rod-shaped member 37. The rotation of the third rod-shaped member 37 is controlled by a drive mechanism (not shown). The screw formed by the third rod-shaped member 37 and the third spiral portion 38 also functions similarly to, for example, an Archimedes screw. The third rotating member 36 may also be surrounded by a cylindrical member 39 having a number of slits formed therein.

Next, we will explain how to kill and sterilize grains using the insecticidal and sterilizing device 1.

First, grains are placed in the housing 11 of the water adding section 10, and water stored in the tank section 17 is sprayed toward the grains from one end of the first nozzle 18 that protrudes into the housing 11. At this time, the mass of water sprayed toward the grains relative to the mass of the grains is preferably 5% by mass or more and 10% by mass or less.

At this time, in order to spray water efficiently onto the grain, a predetermined amount of water is sprayed onto the grain as it falls through the water adding section 10. This spraying process of spraying water onto the grain forms a layer of water over the entire surface of the grain, which allows the heating section 19 to efficiently kill insects and sterilize the grain.

The grains sprayed with water in the hydration section 10 move to the heating section 19 via the tubular section 15. The grains that have moved to the heating section 19 move from one end side to the other end side of the first cylindrical section 20 as the first rotating member 21 rotates. As the grains move through the heating section 19, the spray section 22 sprays steam heated to a predetermined temperature into the internal space of the first cylindrical section 20. This heating process allows the heating section 19 to apply steam to at least a portion of the water applied to the grains in the hydration section 10, heating at least a portion of the water applied to the grains, and efficiently killing insects and sterilizing the grains. In addition, the first rotating member 21 has the first spiral section 24, which allows the grains to be efficiently heated and transported to the drying section 30.

The grains sprayed with steam in the heating section 19 are transported to the drying section 30 connected to the heating section 19. The grains that have moved to the drying section 30 move from one end side to the other end side of the second cylindrical section 26 as the second rotating member 27 rotates. As the grains move through the drying section 30, the air blowing section 28 blows air heated to a predetermined temperature onto at least one of the grains, water, and steam transported from the heating section 19. This air blowing process allows at least one of the water and steam to be separated from the grains, and the grains can be dried. In addition, the second rotating member 27 has a second spiral section 32, which allows the grains to be dried and transported to the discharge section 40 efficiently.

In addition, foreign matter generated during the drying of the grains and their transport to the discharge section 40 falls through the slits in the second cylindrical section 26 into the foreign matter receiving section 29 provided at the bottom of the second cylindrical section 26, and the foreign matter is appropriately discharged outside the insecticidal and sterilizing device 1.

The dried grain is then discharged from the discharge section 40 of the second cylindrical section 26, completing the insecticidal and sterilizing processes.

When the insecticidal and sterilizing device 1 has the dehydration unit 33 described in the second embodiment,
The grain that has been sprayed with steam in the heating section 19 is transported to the dehydration section 33 connected to the heating section 19. The grain that has moved to the dehydration section 33 moves from the top to the bottom inside the small housing 34 and the large housing 35 as the third rotating member 36 rotates. As the grain moves through the dehydration section 33, at least one of water and steam is separated from the grain due to the rotation of the third rotating member 36. At least one of the water and steam separated from the grain is discharged from the discharge section to the outside of the insecticidal and sterilizing device 1. In addition, the grain from which at least one of the water and steam has been separated is transported to the drying section 30 by the third rotating member 36.

The dried grain is then discharged from the discharge section 40 of the second cylindrical section 26, completing the insecticidal and sterilizing processes.

Note that this disclosure is not limited to the above-described embodiment, and various modifications and applications are possible.

For example, in this embodiment, an example is given in which the housing 11 includes a top plate portion 12, but as long as grain can be added, the top plate portion 12 does not need to be provided.

In addition, although the above embodiment shows a configuration in which the top plate portion 12 is connected to the side portion 13, the top plate portion 12 may be provided as a lid that is removable from the side portion 13.

In addition, when multiple first nozzles 18 are connected to the side portion 13, the first nozzles 18 do not need to be arranged protruding into the interior of the housing 11 in a rotationally symmetrical manner when viewed from the bottom or in a plan view, as long as a necessary and sufficient amount of water can be applied to the grain surface.

In addition, an example was described in which a valve 16 is provided between the water adding unit 10 and the heating unit 19 to transport a fixed amount of at least one of grain and water, but the present invention is not limited to this as long as it is possible to transport a fixed amount of at least one of grain and water.

In addition, the spray pattern of the first nozzle 18 used in the insecticidal and sterilizing device 1 according to this embodiment is not particularly limited as long as it can spray a predetermined amount of water onto the grains to coat the grains.

In addition, the first nozzles 18 do not need to be arranged opposite each other as long as they can perform the desired coating function.

Furthermore, the first nozzle 18 is not limited to being connected to only one of the top plate portion 12 and the side portion 13, so long as the entire surface of the grain can be sufficiently covered with water. For example, as shown in FIG. 11, the first nozzle 18 may be provided on each of the top plate portion 12 and the side portion 13.

In addition, in this embodiment, the first rotating member 21 and the second rotating member 27 are respectively provided with the first helical portion 24 and the second helical portion 32 on the circumferential surface of the first rod-shaped member 23 and the second rod-shaped member 31, but are not limited thereto. For example, as shown in FIG. 9, instead of the first helical portion 24 and the second helical portion 32, or a part of the first helical portion 24 and the second helical portion 32, a plurality of plate-shaped blade portions 41 may be provided.

When the blade portion 41 is provided so as to protrude from the rod-shaped member in the circumferential direction, the blade portion 41 may also be provided so as to protrude from the rod-shaped member in the circumferential direction from a location opposing or approximately opposing the protruding location, forming a pair of blade units. In this case, the pair of blade units may be provided at equal intervals in the extension direction of the rod-shaped member.

It is also preferable that the axial direction of the rod-shaped member and the surface direction of the blade portion 41 coincide or approximately coincide in the horizontal direction.

In addition, between the pair of blade units provided in the extension direction of the rod-shaped member, a pair of blade units having the same shape or approximately the same shape as the pair of blade units may be provided with 90° rotational symmetry.

In addition, in this embodiment, an example in which multiple slits are provided in the second cylindrical portion 26 has been described, but the number of slits can be any number as long as sufficient drying function is achieved.

In addition, the internal space of the foreign object receiving section 29 may be divided into a plurality of spaces by providing a partition plate 42 inside the foreign object receiving section 29. In this case, the partition plate 42 is provided perpendicular to the longitudinal axis of the second cylindrical section 26. As a result, the partition plate 42 can divide the internal space of the foreign object receiving section 29 in the extension direction of the insect killing and sterilization device 1. Therefore, the drying conditions, such as temperature and air volume, can be changed for each divided internal space. For example, when the internal space of the foreign object receiving section 29 is divided into two spaces, the internal space of the foreign object receiving section 29 on one end side of the second cylindrical section 26 has a relatively high temperature and can blow a large amount of air. On the other hand, the internal space of the foreign object receiving section 29 on the other end side of the second cylindrical section 26 has a relatively low temperature and can blow a small amount of air.

In addition, in this embodiment, the blower unit 28 has been described using a blower as an example, but is not limited to this. For example, the blower unit 28 may be a member having a plurality of impellers arranged in a ring shape and at equal intervals in the circumferential direction of the rotating shaft. The impellers provided in the blower unit 28 can rotate around the rotating shaft by being given a driving force from a driving source (not shown).

Furthermore, when the internal space of the foreign object receiving portion 29 is partitioned into a plurality of spaces, the number of blowing portions 28 may be provided corresponding to the partitioned spaces. For example, as shown in Fig. 10, when the internal space of the foreign object receiving portion 29 is partitioned into two spaces, it is preferable to blow air at a temperature of 60°C to 80°C and at a volume of 70 ^m3 /min to 90 ^m3 /min into the internal space of the foreign object receiving portion 29 on one end side of the second cylindrical portion 26. On the other hand, it is preferable to blow air at a temperature of 30°C to 50°C and at a volume of 50 ^m3 /min to 70 ^m3 /min into the internal space of the foreign object receiving portion 29 on the other end side of the second cylindrical portion 26.

In this way, by dividing the internal space of the foreign object receiving section 29 into multiple spaces, it is possible to blow air of different temperatures from the blower section 28 into each space at different air volumes, and the cooling process can be performed efficiently as it moves toward the other end of the second cylindrical section 26.

In addition, in the second embodiment, the dehydration unit 33 that separates at least one of water and steam from the surface of the grain by centrifugation has been described as an example, but is not limited to this. As long as it is possible to sufficiently separate at least one of water and steam from the surface of the grain, for example, a dehydration unit with a suction function (not shown) may be used.

1 Insecticidal and sterilizing device, 10 Hydration section, 11 Housing, 12 Top plate section, 13 Side section, 14 Funnel section, 15 Tubular section, 16 Valve, 17 Tank section, 18 First nozzle, 19 Heating section, 20 First cylindrical section, 20a Body section, 20b Cover section, 21 First rotating member, 22 Spray section, 23 First rod-shaped member, 24 First spiral section, 25 Second nozzle, 26 Second cylindrical section, 26a Body section, 26b Cover section, 27 Second rotating member, 28 Air blowing section, 29 Foreign object receiving section, 30 Drying section, 31 Second rod-shaped member, 32 Second spiral section, 33 Dehydration section, 34 Small housing, 35 Large housing, 36 Third rotating member, 37 Third rod-shaped member, 38 Third spiral section, 39 Cylindrical member, 40 discharge section, 41 blade section, 42 partition plate.

Claims (7)

a hydration section capable of accommodating grain and water;
a jetting member capable of jetting the water is provided inside the water adding section;
The hydration section is formed by a top plate portion forming an upper surface, a side surface portion forming a side surface, and a funnel portion forming a lower portion,
When the injection member is connected to the side portion, the injection member is connected to the side portion in a range up to a contact point between an upper surface of the stacked grain and an inner wall of the side portion when the grain is stacked inside the hydration section,
A heating unit connected to the water adding unit and configured to inject steam into at least a portion of the water added to the grain;
A drying section that blows air toward at least one of the grain, the water, and the steam transported from the heating section.
Insecticidal and disinfectant equipment. When a plurality of the injection members are connected to the side surface portion, the plurality of the injection members are connected in a rotationally symmetric manner when viewed from above or below.
2. The insecticidal and sterilizing device according to claim 1 . The injection member is further connected to at least one of the top plate portion and the funnel portion.
3. An insecticidal and sterilizing device according to claim 1 or 2 . The temperature of the water sprayed onto the grain is between 10°C and 80°C.
The insecticidal and sterilizing device according to any one of claims 1 to 3 . The mass of the water relative to the mass of the grain is 5% by mass or more and 10% by mass or less;
The insecticidal and sterilizing device according to any one of claims 1 to 4 . A dehydration section is further provided to separate at least one of the water and the steam from the grain.
The insecticidal and sterilizing device according to any one of claims 1 to 5 . The dehydration unit is connected to the heating unit and the drying unit.
7. An insecticidal and sterilizing device according to claim 6 .

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