JP2019170364A - Granular matter spraying apparatus - Google Patents

Abstract

An object of the present invention is to provide a granular material spraying device capable of uniformly spraying a granular material around a rotary plate. A granular material spraying device according to the present invention includes a tank, a rotating plate provided below the tank, and rotatably provided around a rotating shaft, and an upper surface of the rotating plate. A rotating blade mechanism 28 having a plurality of blades 32 and causing the particulates flowing down onto the rotating rotary plate 31 to be scattered outward by the blades 32 from the tank 12 in which the particulates are stored; In the granular material dispersing apparatus 10 provided, the initial velocity of the rotating plate 31, the area divided into a plurality of areas in the circumferential direction by the wing body 32, and the outward angle of the granular substance that protrudes outward from the adjacent area, and the angle of the horizontal direction. At least one of the shape of the rotating plate 31 and the shape of the blade body 32 is different in an adjacent area so that at least one of them is different from each other. [Selection diagram] FIG.

Description

  The present invention relates to a granular material spraying device that enables uniform spraying of a granular material.

  There are various types of granular material spraying apparatuses for spraying granular materials such as chemicals such as agricultural chemicals and fertilizers. For example, in Patent Document 1 (Japanese Patent Application Laid-Open No. 2012-157273), a tank, a rotating plate provided below the tank and provided to be rotatable about a rotation axis, and a radial surface on the upper surface of the rotating plate are disclosed. A plurality of blades provided from the tank in which the granular material is stored, and the granular material flowing down on the rotating plate from the flow outlet at a position deviated from the rotation shaft by the blades. A granular material spraying device including a rotary blade mechanism that scatters outward is described. In this granular material spraying device, the granular material that has flowed down on the rotating plate is pressed and rotated in the rotating direction of the rotating plate by the rotating blades, and scattered outside the rotating plate.

JP 2012-157273 A

By the way, a rotating shaft for rotating the rotating plate exists at the center of the rotating plate. For this reason, the particulate outlet from the tank cannot be provided at the center of rotation of the rotating plate because the rotating shaft becomes a spatial obstacle, and must be arranged at a position deviated from the rotating shaft. Absent.
In this way, if the flow outlet of the granular material is provided at a position deviated from the rotation shaft that is the center of the rotating plate, the granular material will be biased in the protruding direction, and the granular material is evenly distributed around the rotating plate. It was difficult to do.

  SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a granular material spraying device capable of evenly spraying granular material around a rotating plate while having a simple structure. There is to do.

In order to achieve the above object, the present invention comprises the following arrangement.
That is, a granular material spraying device according to the present invention includes a tank, a rotating plate provided below the tank and provided to be rotatable about a rotating shaft, and a plurality of blade bodies provided on the upper surface of the rotating plate. In the granular material spraying device, comprising: a rotating blade mechanism for scattering the granular material flowing down on the rotating plate rotating from the tank in which the granular material is stored, by the blade body, In the area divided into a plurality of areas in the circumferential direction by the blades of the rotating plate, in order to make at least one of the initial velocity of the granular material protruding outward from the adjacent area and the horizontal projection angle different from each other, At least one of the shape of the rotating plate and the shape of the blades is made different in adjacent areas.

In the adjacent areas, the lengths of the blades in the radial direction from the center of the rotating plate can be made different.
Alternatively, the inclination angle of the bottom surface of the rotating plate from the center of the rotating plate toward the outside in the adjacent area can be made different. In this case, in the adjacent area, the inclination angle of the bottom surface of the rotating plate from the center of the rotating plate toward the outside is set to the angle from the horizontal to the upward, the horizontal, the horizontal to the downward in the circumferential direction of the rotating plate. The angle can be set to repeat in the order of the horizontal, horizontal, and horizontal to upward angles.
Alternatively, the length of the bottom surface of the rotating plate from the central portion of the rotating plate toward the outside in the adjacent area can be made different.
Alternatively or additionally, the angle of the blade body toward the central axis direction in the adjacent area can be varied.
Moreover, the planar shape of the blade body in the adjacent area can be formed into curved blades having different curved shapes.

  ADVANTAGE OF THE INVENTION According to this invention, although it is a simple structure, the granular material spreading | diffusion apparatus which can distribute a granular material equally to the circumference | surroundings of a rotating plate can be provided.

It is sectional drawing of a granular material spreader. It is the top view and sectional drawing which show the conventional rotating plate and blade body. It is the top view and sectional drawing which show 1st Embodiment of the rotating plate and blade body in this invention. It is the top view and sectional drawing which show 2nd Embodiment of the rotating plate and blade body in this invention. It is the top view and sectional drawing which show 3rd Embodiment of the rotating plate and blade body in this invention. It is the top view and sectional drawing which show 4th Embodiment of the rotating plate and blade | wing body in this invention. It is the top view and sectional drawing which show 5th Embodiment of the rotating plate and blade body in this invention. It is the top view and sectional drawing which show 6th Embodiment of the rotating plate and blade body in this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a cross-sectional view of a granular material spraying apparatus 10 according to the present embodiment.
The granular material spraying device 10 is used by being attached to a moving device (not shown) such as an unmanned airplane or a spraying vehicle.
Reference numeral 12 denotes a tank which can store a required amount of particulate matter in the tank 12 from the storage port 14. A lid 16 is detachably fitted to the storage port 14.
The tank 12 is attached to the base 13.
A funnel 18 is attached below the tank 12. Between the tank 12 and the hopper 18, a shutter plate 20 is rotatably provided by a rotating shaft 22 provided through the tank 12.

The shutter plate 20 is rotated to an arbitrary position by rotating the rotating shaft 22 manually or electrically. In the present embodiment, the shutter plate 20 is rotated by manually operating the handle 23 and rotating the rotary shaft 22.
The shutter plate 20 is provided with a through hole 24. Further, a through hole (not shown) is also provided on the bottom surface of the tank 12.

When the shutter plate 20 closes the through hole on the bottom surface of the tank 12, the particulate matter stored in the tank 12 does not flow down. Further, when the shutter plate 20 rotates and the through hole 24 of the shutter plate 20 and the through hole of the bottom surface of the tank 12 coincide with each other, the particulate matter stored in the tank 12 flows down into the hopper 18. Yes. By adjusting the degree of overlap between the two through holes, it is possible to adjust the flow amount of the granular material.
The lower part of the hopper 18 serves as a granular material outlet 26.

A rotary blade mechanism 28 is provided below the tank 12.
The rotary blade mechanism 28 includes a rotary plate 31 that is provided so as to be rotatable about a rotary shaft 30. A plurality of blade bodies 32 are formed radially on the upper surface of the rotating plate 31.
The rotating shaft 30 is rotatably supported by a bearing 33 fixed to the base 13. The upper part of the rotating shaft 30 is formed in a screw gear 34, and a helical gear 35 is engaged with the screw gear 34. When the helical gear 35 is rotated by a motor (not shown) or manually, the rotating plate 31 is rotated. In addition, you may make it rotate the rotating shaft 30 directly with a motor (not shown).

As described above, the granular material stored in the tank 12 flows down from the flow-down port 26 of the hopper 18 onto the rotating plate 31.
As shown in FIG. 1, the flow-down port 26 of the hopper 18 is provided to be inclined obliquely downward toward the direction of the rotation axis 30.
In the present embodiment, a distribution funnel 37 is rotatably provided around the bearing 33. The distribution funnel 37 is provided in the shape of a tray that is long in the circumferential direction. A distribution port 38 is formed on one end side of the distribution funnel 37. The distribution funnel 37 receives the granular material that flows down from the flow-down port 26. And can flow down on the rotating plate 31.

Note that the distribution funnel 37 is not necessarily provided, and the granular material may flow directly onto the rotating plate 31 from the flow-down port 26.
Reference numeral 40 denotes a cover which is provided so as to cover the upper side of the rotating plate 31 and prevents the granular material from jumping upward. In addition, a shielding wall (not shown) extending downward may be provided at the tip of the cover 40 in order to restrict the granular material from splashing outward beyond a predetermined distance.

  In the present embodiment, as described above, in the area divided into a plurality of areas in the circumferential direction by the blade body 32 of the rotating plate 31, the initial speed of the granular material that protrudes outward from the adjacent area and the horizontal protrusion In order to make at least one of the angles different from each other, at least one of the shape of the rotating plate 31 and the shape of the blade body 32 is made different in adjacent areas.

For comparison, a conventional example is shown in FIG.
FIG. 2 is a view showing a conventional rotating plate 31 and blade body 32. A is a plan view and B is a cross-sectional view. The rotating plate 31 is provided in a disc shape, and the blade bodies 32 are radially formed to have the same length and the same shape. In this conventional rotary vane mechanism, as described above, the flow outlet of the granular material from the tank must be provided at a position displaced from the center of the rotating plate 31, and thus a deviation occurs in the protruding direction of the granular material. As a result, it is difficult to evenly disperse the granular material around the rotating plate 31.

FIG. 3 shows a first embodiment of the rotary blade mechanism 28 according to the present invention, in which A is a plan view and B is a cross-sectional view.
In the present embodiment, the length in the radial direction from the center of the rotating plate 31 of the blade body 32 in the area adjacent to the area divided into a plurality of areas in the circumferential direction by the blade body 32 is varied. .
More specifically, in the present embodiment, the blade body 32 has a maximum length blade body 32a, an intermediate length blade body 32b, and a minimum length blade body in the circumferential direction of the rotating plate 31. It is set to repeat in the order of 32c, blade body 32b having an intermediate length, and blade body 32a having a maximum length. The rotating plate 31 and the blade body 32 are provided so as to be 180 ° point symmetric in plan view. As a result, the rotational balance of the rotation plate 31 around the central axis 30 can be balanced.

In the first embodiment, the granular material that has flowed down from the flow down port 26 onto the rotating plate 31 is pressed by the blade body 32 and rotates, and jumps outward at a position away from the blade body 32. Since the length of the wing body 32 is different, the speed at the time of jumping outward (initial speed) is large in the case of the wing body 32 having a long length, and is small in the case of the wing body 32 having a short length. The distance at which the granular material pops out will be different.
Thus, in this Embodiment, since the distance which the granular material protrudes from an adjacent area differs and is disperse | distributed, by this, a granular material is disperse | distributed uniformly around the rotating plate 31. FIG.

FIG. 4 shows a second embodiment of the rotary blade mechanism 28 according to the present invention, where A is a plan view thereof, B is an AA sectional view, C is a BB sectional view, and D is CC sectional view. It is sectional drawing.
In the present embodiment, the inclination angle of the bottom surface of the rotating plate 31 from the center of the rotating plate 31 toward the outside in the area adjacent to the area divided into a plurality of areas in the circumferential direction by the blade body 32 is varied. ing.
More specifically, in the present embodiment, the inclination angle of the bottom surface of the rotating plate 31 from the center of the rotating plate 31 to the outside in the adjacent area is from the horizontal to the upward in the circumferential direction of the rotating plate. Angle (AA cross section), horizontal (BB cross section), horizontal to downward angle (CC cross section), horizontal (BB cross section), horizontal to upward angle (AA cross section) are repeated in this order. Is set to The rotating plate 31 and the blade body 32 are provided so as to be 180 ° point symmetric in plan view. As a result, the rotation balance of the rotation plate 31 around the central axis 30 can be balanced.

  In the second embodiment, since the inclination angle of the bottom surface of the rotating plate 31 from the central portion of the rotating plate 31 to the outside in the adjacent area is made different, the granular material from the adjacent area is changed. Since the vertical projection angle is different, and the scattering distances of the granular materials are different and are scattered, the granular materials are evenly distributed around the rotating plate 31.

FIG. 5 shows a third embodiment of the rotary blade mechanism 28 according to the present invention, in which A is a plan view and B is a cross-sectional view thereof.
In the present embodiment, the length of the bottom surface of the rotating plate 31 from the center of the rotating plate 31 toward the outside in the area adjacent to the area divided into a plurality of areas in the circumferential direction by the blade body 32 is varied. ing.
More specifically, the length of the bottom surface from the center of the rotating plate 31 toward the outside in the adjacent area is large (31a), small (31b), large (31a) in the circumferential direction of the rotating plate 31. It is set to repeat in the order of. The rotating plate 31 and the blade body 32 are provided so as to be 180 ° point symmetric in plan view. As a result, the rotation balance of the rotation plate 31 around the central axis 30 can be balanced.

In the third embodiment, since the length of the bottom surface of the rotating plate 31 from the central portion of the rotating plate 31 toward the outside in the adjacent area is different, the granular material is formed in the area of the long bottom surface. It is held for a long time, its peripheral speed increases, the speed at which it jumps outward (initial speed) is high, and the granular material flies far away. On the other hand, in the area of the short bottom surface, the granular material is held for a short time, the peripheral speed is small, the speed when jumping outward (the initial speed) is small, and the distance that the granular material flies is small.
Thus, in this Embodiment, since the distance which the granular material protrudes from an adjacent area differs and is disperse | distributed, by this, a granular material is disperse | distributed uniformly around the rotating plate 31. FIG.

FIG. 6 shows a fourth embodiment of the rotary blade mechanism 28 according to the present invention, in which A is a plan view and B is a cross-sectional view thereof.
In this Embodiment, the angle which goes to the central-axis 30 direction of the blade | wing body 32 in the said adjacent area is varied. That is, in a plurality of blade bodies 32 provided on the upper surface of the rotating plate 31, a blade body facing the central axis 30 direction of the rotating plate 31 (facing directly to the central axis 30) and a blade body not facing the central axis 30 direction are mixed. It is provided to do.

In FIG. 6, the blade body 32 a is a blade body that faces the direction of the central axis 30, and the blade bodies 32 b, 32 c, and 32 e do not face the direction of the central axis 30, and the tip side rotates backward with respect to the rotation direction X of the rotating plate 31. Inclined so as to face. Further, the blade body 32d is provided to be inclined with respect to the rotation direction X of the rotating plate 31 so that the tip side faces the front of the rotation.
Although two sets of blade bodies 32a to 32e are provided, these two sets of blade bodies are provided so as to be 180 ° symmetrical with respect to a plan view. As a result, the rotation balance of the rotation plate 31 around the central axis 30 can be balanced.

In the fourth embodiment, since the angles toward the central axis 30 of the blade body 32 are different in the adjacent areas, the residence time of the particulate matter in each area is different, and the residence time becomes longer. It can be said that the peripheral speed increases, and the speed (initial speed) when jumping outward is large, and the granular material flies far away. On the other hand, the shorter the residence time, the shorter the time during which the granular material is held (falls faster from the rotating plate 31), the peripheral speed becomes smaller, the speed when jumping outward (the initial speed) becomes smaller, and the granular material flies. The distance becomes smaller.
As described above, also in the present embodiment, the distances at which the granular material jumps out from the adjacent areas are different and are different, so that the granular material is evenly distributed around the rotating plate 31.

FIG. 7 shows a fifth embodiment of the rotary blade mechanism 28 according to the present invention, in which A is a plan view and B is a cross-sectional view thereof.
In the present embodiment, the planar shape of the blade body 32 in the adjacent area is formed as a curved blade having a different curved shape. For example, the blade body 32 a extends linearly toward the outside, and then the tip end side is provided to be curved in a circular arc shape behind the rotation direction X with respect to the rotation direction X of the rotating plate 31. The blade body 32b adjacent to the blade body 32a as a whole is a curved blade that curves in a circular arc shape in the backward direction with respect to the rotation direction X.

The blade body 32c has an arc shape with a large curvature at the base side, a linear shape at the middle portion, and an arc shape with a large curvature at the tip side, and has a shape in which a linear portion and an arc portion are mixed. Like the blade body 32b, the blade body d is a curved blade that is curved in a circular arc shape in the backward direction with respect to the rotation direction X.
Each of the blade bodies 32 a to 32 d is provided so that the tip end side faces the rotation rear side with respect to the rotation direction X of the rotating plate 31 as a whole.
In some cases, the blade body 32 may be formed as a curved blade that curves forward in the rotational direction of the rotating plate 31.

  In the present embodiment, two sets of blade bodies 32a to 32d are provided, and these two sets of blade bodies are provided so as to be 180 ° point-symmetric in plan view. As a result, the rotation balance of the rotation plate 31 around the central axis 30 can be balanced.

In the fifth embodiment, since the planar shape of the blade body 32 in the adjacent area is formed in curved blades having different curved forms, the residence time of the particulate matter in each area is different and the residence time is long. It can be said that the peripheral speed increases, the speed when jumping outward (initial speed) is large, and the granular material flies far away. On the other hand, the shorter the residence time, the shorter the time during which the granular material is held (falls faster from the rotating plate 31), the peripheral speed becomes smaller, the speed when jumping outward (the initial speed) becomes smaller, and the granular material flies. The distance becomes smaller.
As described above, also in the present embodiment, the distances at which the granular material jumps out from the adjacent areas are different and are different, so that the granular material is evenly distributed around the rotating plate 31.

The shape of the rotating plate 31 and the shape of the blade body 32 may be the same as the shapes shown in the first to fifth embodiments.
For example, in FIGS. 8A and 8B, blade bodies 32a that are curved blades and linear blade bodies 32b having a short length are alternately provided (sixth embodiment).
What is necessary is just to select the shape of the rotating plate 31 in the adjacent area, and the shape of the blade body 32 according to the kind, shape, size, etc. of a granular material, and according to the dispersion degree of the granular material in that case.
In the present invention, the adjacent areas are not necessarily all the continuously adjacent areas.

DESCRIPTION OF SYMBOLS 10 Granules spreader 12 Tank 13 Base 14 Storage port 16 Cover body 18 Hopper 20 Shutter plate 22 Rotating shaft 24 Through hole 26 Downflow port 28 Rotating blade mechanism 30 Rotating shaft 31 Rotating plate 32 Blade body 33 Bearing 34 Screw gear 35 Helical gear 37 Sorting funnel 38 Outlet 40 Cover

Claims (8)

A tank,
A rotating plate provided below the tank and rotatably provided around the rotation axis, and a plurality of blades provided on the upper surface of the rotating plate, and rotated from the tank in which the granular material is stored. A rotating blade mechanism for scattering particles flowing down on the rotating plate to the outside by the blade body;
In a granular material spraying device comprising:
In the area divided into a plurality of areas in the circumferential direction by the blades of the rotating plate, in order to make at least one of the initial velocity of the granular material protruding outward from the adjacent area and the horizontal projection angle different from each other, At least one of the shape of the said rotating plate and the shape of the said blade | wing body was varied in the adjacent area, The granular material spreading | diffusion apparatus characterized by the above-mentioned.   The granular material spraying device according to claim 1, wherein in the adjacent area, the length of the blade body in the radial direction from the center of the rotating plate is varied.   The granular material spraying device according to claim 1 or 2, wherein in the adjacent area, the inclination angle of the bottom surface of the rotating plate from the central portion of the rotating plate toward the outside is varied.   In the adjacent area, the angle of inclination of the bottom surface of the rotating plate from the center of the rotating plate toward the outside is the angle from the horizontal to the upper, the horizontal, the angle from the horizontal to the lower, 4. The granular material spraying apparatus according to claim 3, wherein the granular material spraying apparatus is set to repeat in the order of horizontal and horizontal to upward angles.   The granular material spraying device according to any one of claims 1 to 4, wherein in the adjacent area, the length of the bottom surface of the rotating plate is changed from the center of the rotating plate toward the outside. .   The granular material spraying device according to any one of claims 1 to 5, wherein an angle of the blade body toward the central axis direction in the adjacent area is varied.   The granular material spraying device according to any one of claims 1 to 6, wherein in the adjacent area, the planar shape of the blade body is formed into curved blades having different curved shapes.   The granular material spraying device according to any one of claims 1 to 7, which is a spraying device attached to a moving device.

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