JP4660651B2 - Foreign matter removal device - Google Patents

Description

  The present invention relates to a foreign matter removing apparatus for removing pebbles and other foreign matters mixed in grains such as red beans and rice. In particular, the present invention relates to a foreign matter removing apparatus capable of separating grains and foreign matters by water flow using water as a medium and removing foreign matters.

  2. Description of the Related Art A foreign matter removing device that removes foreign matters such as fine pebbles, sand, and dust mixed in grains such as red beans and rice is known in the prior art. In particular, Patent Document 1 (Japanese Patent Laid-Open No. 10-15404) is known as an apparatus that separates grains and foreign substances by water using water as a medium and removes foreign substances.

  FIG. 19 is a diagram showing a structural example of Patent Document 1. In FIG. In this patent document 1, a grain called foreign substance is separated using the structure called "the saucer main part 1". The saucer body 1 has a donut-shaped bottom surface, and is formed by surrounding an outer wall 3 on the outer periphery and an inner wall 4 on the opening 2 on the inner periphery, and a metal mesh plate 5 is provided slightly above the bottom. A pressurized water supply pipe 6 extending upward from the opening 2 on the inner periphery is erected with respect to the tray body 1, and a water flow squirted upward from the pressurized water supply pipe 6 blows out from the inside to the outside and falls from above. While being received by the metal mesh plate 5 in the process, the water flow gathered inwardly forms a water flow that falls below the opening 2 beyond the height of the inner wall 4. Grains such as red beans and rice are included in this water stream, and foreign matters are removed while washing.

  The principle of foreign matter removal disclosed in Patent Document 1 is the separation of grains and foreign matter using the wire mesh plate 5 as a sieve. The wire mesh plate 5 has a mesh size smaller than the size of the grain to be washed, and is used as a sieve. The wire mesh plate on the saucer body 1 is made of grain and foreign matter such as pebbles, sand, and dust with pressure water. While washing at 5, the foreign matter such as pebbles, sand, and dust passes through the mesh downwards and accumulates on the bottom surface of the saucer body 1, while the grain does not pass through the mesh so that it passes over the inner wall 4 due to the water flow. Then, it flows out from the opening 2 to the bottom of the saucer body 1.

  Here, in the foreign matter removing apparatus of Patent Document 1, a rotating flow using a pipe piece is disclosed as a device for improving the foreign matter removing efficiency. A water outlet 8 at the tip of a pipe piece 7 extending in a substantially horizontal direction is disposed at the tip of the pressurized water supply pipe 6 so as to be positioned in the circumferential direction of the saucer body 1. The water flow flowing out from the pressurized water supply pipe 6 along the circumferential direction of the saucer body 1 becomes a spiral flow on the wire mesh plate 5 of the saucer body 1, and foreign matters finer than the wire mesh plate 5 rotate on the wire mesh plate 5. However, it is disclosed that the grains fall gradually from the mesh and are separated by passing over the inner wall 4 on the rotating flow. It has also been suggested that foreign matters larger than the mesh of the metal mesh plate 5 can be separated if they accumulate in the corners of the inner wall without exceeding the inner wall 4.

Japanese Patent Laid-Open No. 10-15404

The foreign matter removal work using the conventional foreign matter removing apparatus has the following problems.
The first problem is that it is difficult to remove foreign matters such as pebbles having a size close to the size of the grain with a conventional foreign matter removing apparatus using a wire mesh plate as a sieve. Since pebbles and sand tend to be heavier than grains, when the water flows through the upper surface of the wire mesh board 5 by adjusting the momentum of the water flow, it sinks below the grains and has a small diameter like sand. Things can be separated by passing through the mesh of the wire mesh and falling down, but pebbles with a size close to that of the grain cannot pass through the mesh and cannot be separated well from the grain, and the pebbles remain as they are There existed a possibility that it might come out with the grain from the saucer main body 1 over the inner wall 4 on a water flow.

The second problem is that a conventional foreign matter removing apparatus using a wire mesh plate as a sieve has a difficulty in removing foreign matters such as pebbles having a specific gravity close to that of grain.
Pebbles and the like tend to have a higher specific gravity than grain, but there are things with specific gravity close to that of grain, and it is hard to make a difference between the movement of grains and the movement of pebbles in a flowing water stream. The grain and pebbles could not be separated well, and the pebbles could be put on the water stream as they were and passed out of the inner wall 4 together with the grain.

  In view of the above problems, an object of the present invention is to provide a foreign matter removing apparatus having improved ability to separate and remove even foreign matter such as pebbles having a size close to the size of a grain. It is another object of the present invention to provide a foreign matter removing apparatus having an improved ability to separate and remove foreign matter such as pebbles having a specific gravity close to that of grain.

In order to achieve the above object, the foreign matter removing device of the present invention is a foreign matter removing device that separates grain and foreign matter mixed in the grain by water flow, and removes the foreign matter,
A bottom plate having an opening in the center, an outer peripheral wall standing on the outer peripheral edge of the bottom plate, and a saucer body comprising an inner peripheral wall standing on the opening edge of the bottom plate;
A foreign matter capturing body that covers the upper surface of the bottom plate of the saucer body, and comprises a mesh body that has a mesh that does not pass through the grain and has an opening at the center, and a wall surface that constitutes a frame body standing on the mesh body A foreign matter capturing body provided with a gap between the grains and the foreign matter in a size that allows the foreign matter to fit in the water stream;
A pressurized water supply pipe penetrating the inside of the opening of the tray body and standing upward;
A water guide wall that guides the water flow fountained upward from the pressurized water supply pipe toward the foreign matter capturing body located below,
A slat that provides a rotational force in the circumferential direction for the water flow flowing downward along the water guide wall surface;
By rotating the water flow on the foreign material capturing body in the circulation direction by the blades, increasing the residence time until it flows downward from the opening, and in the water flow due to the specific gravity difference of the grain and the foreign material with respect to water Is a foreign matter removing device in which only the foreign matter is easily captured by the foreign matter catching body due to a difference in movement of the grain and a difference in friction force between the grain and the foreign matter with respect to the foreign matter catching body or the presence or absence of catching. .

  Here, in general, it is difficult to separate a foreign substance having a size close to that of a grain and a specific gravity close to that of the grain. However, the grain and the foreign substance do not have the same specific gravity, and there is a difference in specific gravity. If it emphasizes so that this difference in specific gravity may appear easily and the movement of a grain thing and a foreign material is controlled, it will become easy to distinguish. In addition, the grain has an oval sphere with a smooth surface and is generally surrounded by a hard and smooth shell, so that the surface friction coefficient is generally small. On the other hand, foreign matter such as pebbles has an irregular shape with a rough surface, innumerable protrusions and corners, and a large coefficient of friction. If it emphasizes so that the difference of the friction coefficient of this surface may come out easily and the movement of a grain thing and a foreign material is controlled, it will become easy to separate. The foreign matter removing apparatus of the present invention removes foreign matter by emphasizing the slight difference in specific gravity and the difference in surface friction coefficient.

  In other words, it is guided to the foreign body capturing body while rotating the water flow in the circulating direction by the blades of the water guide wall, and the residence time becomes longer because the grains and foreign bodies flow on the foreign body capturing body while making a circular motion. Differences in movement are likely to occur. That is, the grain material has a smaller specific gravity than foreign objects such as pebbles, and is easy to get on water, and foreign objects such as pebbles have a large specific gravity and tend to sink. Furthermore, although the grain and foreign matter flow while touching the gap due to the foreign body catcher, the grain flows smoothly without friction and the surface is smooth, but the foreign matter has protrusions and corners on the surface. There is a lot of friction and it is easy to get caught in the gap. In this way, cereal grains come out smoothly even when touching the gap due to the combination of the two effects of being easy to float in the water flow due to the difference in specific gravity and being difficult to get caught in the gap due to the small friction coefficient of the surface. On the other hand, foreign matter easily sinks from the water flow due to the difference in specific gravity, so that it easily falls into the gap, and because it has a large surface friction coefficient, it easily gets caught in the gap. It becomes difficult to flow out due to the water flow and remains trapped by the foreign body capturing body, so that both can be separated.

Next, in the above configuration, the foreign substance removing device is connected in multiple stages of two or more upper and lower stages, and the water flow that flows downward from the opening of the upper foreign substance removing device is connected so as to flow into the wall surface of the lower water guiding wall. It is also preferable.
With the above configuration, by repeating the separation of the grain and foreign matter in multiple stages due to the difference in specific gravity of the grain and foreign matter with respect to water and the difference in the friction coefficient with respect to the gap between the foreign matter capturing bodies by one foreign matter removing device, The number of remaining foreign matters can be reduced and the foreign matter removal performance can be improved.

The foreign matter removing system of the present invention includes a water tank for temporarily storing grain, a water valve for receiving a flow of water that sucks the grain and air of the water tank and blows up inside the pressurized water supply pipe, and the foreign material of the present invention. It is provided with a removal device and a container that separates the grains that have flowed out of the foreign matter removal device. That is, the foreign matter removal system of the present invention is a system that efficiently removes foreign matter by improving the foreign matter removal performance by incorporating the foreign matter removal device described above while circulating the grain by water flow.
With the above configuration, the grain to remove foreign matter is put into the aquarium, the water flow flowing from the water valve is blown up to the foreign matter removing device under the condition of mixed air, and after removing foreign matter with the foreign matter removing device, water and grain The product can be sieved and foreign substances mixed in high quality grain can be removed.

According to the foreign matter removing apparatus of the present invention, it is possible to accurately separate the grain material and the foreign matter based on the difference in specific gravity with respect to the water, and it is also possible to separate both by the difference in the friction coefficient with respect to the gap between the foreign matter capturing bodies.
Further, according to the present invention, the grain to be removed of foreign matter is put into the water tank, and the water flow flowing in through the water valve is blown up to the foreign matter removing device under the condition of air mixed flow, and the foreign matter is removed by the foreign matter removing device. After that, it is possible to screen the water and the grain, and it is possible to obtain the grain with little foreign matter.

The figure which shows typically the basic composition of the foreign material removal system 200 containing the foreign material removal apparatus 100 of this invention. The figure which takes out the foreign material removal apparatus 100, and shows an example of the external appearance The figure which shows the example of 1 structure of the saucer main body 110 The figure which shows the example of 1 structure of the foreign material capture body 120 The figure which shows a mode that the saucer main body 110 shown in FIG. 3 and the foreign material capturing body 120 shown in FIG. 4 are combined. The figure which showed typically the structural example of the water conveyance wall 140 and the blade board 141 inside the foreign material removal apparatus 100 The figure which shows a mode that the water guide wall 140 was attached in the state which combined the saucer main body 110 and the foreign material capture body 120. FIG. The figure which shows the example of a structure of the pressurized water supply pipe 130, and the figure which shows a mode that the pressurized water supply pipe 130 was combined with the saucer main body 110, the foreign material capture body 120, and the water conveyance wall 140. The figure which shows a mode that the water flow which flows through the wall surface of the water guide wall 140 is given rotational force by the blade 141, and becomes a rotational vortex. The figure which shows typically a state that a foreign material is capture | acquired by the foreign material capture body 120, and a grain is not captured easily. The figure which shows a mode that the surrounding grain thing in the storage tank 210 is driven in when the water flow is driven into the entrance 131 of the pressurized water supply pipe 130 vigorously. The figure which showed typically the flow of the water flow of the foreign material removal system 200 whole The figure which shows a mode that a water flow and a grain thing are isolate | separated by the grain taking-out part 240, and only a grain thing is collect | recovered. The figure which shows typically the external appearance of the foreign material removal apparatus 100a and foreign material removal system 200a of Example 2. FIG. The figure which shows typically the internal structure of the foreign material removal apparatus 100a and foreign material removal system 200a of Example 2. FIG. The figure which shows typically the flow of the water flow which circulates through the foreign material removal apparatus 100a and the foreign material removal system 200a of Example 2. FIG. The figure which shows typically the external appearance of the foreign material removal apparatus 100b and foreign material removal system 200b of Example 3. FIG. The figure which shows typically the flow of the water flow inside the foreign material removal apparatus 100b and foreign material removal system 200b of Example 3. FIG. The figure which shows the structural example of patent document 1

Hereinafter, embodiments of the foreign matter removing apparatus and foreign matter removing system of the present invention will be described. The present invention is not limited to these configuration examples.
Example 1 shows a basic configuration example of a foreign matter removing apparatus and a foreign matter removing system. The second embodiment shows a configuration example in which the foreign substance removing device is provided in a plurality of stages in a vertically continuous manner (a configuration example of a two-stage vertical continuous manner as an example). The third embodiment shows a configuration example in which the foreign substance removing device is provided in a plurality of stages in a horizontal continuous manner (a configuration example of a two-stage horizontal continuous manner as an example).

First, the foreign matter removing apparatus 100 and the foreign matter removing system 200 according to the first embodiment of the present invention will be described. The first embodiment is a configuration example of a foreign matter removal system 200 in which only one foreign matter removal apparatus 100 and only one storage tank 210 are provided.
1 and 2 are diagrams schematically illustrating a configuration example of a foreign matter removing apparatus 100 according to Embodiment 1 of the present invention. FIG. 1 is a diagram schematically showing the configuration of a foreign matter removal system 200 including the foreign matter removal device 100 of the present invention, and FIG. 2 is a view showing the appearance of the foreign matter removal device 100 taken out.

  The configuration example of the first embodiment is an example in which only one set of the tray main body 110, the foreign body capturing body 120, the pressurized water supply pipe 130, the water conveyance wall 140, and the lid body 150 of the foreign material removal apparatus 100 is provided. An example in which the tray main body 110 and the foreign body capturing body 120 are continuously pluralized in the vertical direction will be described in a second embodiment.

The foreign matter removing apparatus 100 of the present invention separates and removes the grain and the foreign matter mixed in the grain by a water flow. In the following description, the grains are described as red beans as an example, but can be applied to other grains such as soybeans and rice.
The foreign matter removing apparatus 100 includes a tray body 110, a foreign matter catching body 120, a pressurized water supply pipe 130, a water guiding wall 140, and a lid 150. The foreign matter removal system 200 is simply displayed as a configuration including a storage tank 210, a water valve 220 (shown simply), an air-mixing nozzle 230 (shown simply), and a grain takeout unit 240.

First, each component of the foreign matter removing apparatus 100 will be described.
The saucer body 110 is a container that temporarily retains the water flow containing the grains for a short time. FIG. 3 is a diagram showing a configuration example of the tray body 110. In the configuration example shown in FIG. 3, a bottom plate 111 having an opening 112 at the center, an outer peripheral wall 113 erected on the outer peripheral edge of the bottom plate 111, and an inner peripheral wall 114 erected on the edge of the opening 112 of the bottom plate 111, The structure includes a cavity 115 surrounded by a bottom plate 111, an outer peripheral wall 113, and an inner peripheral wall 114. Here, the height of the inner peripheral wall 114 is lower than the outer peripheral wall 113, and the water that overflows beyond the volume of the cavity 115 due to the water flow that continues to flow into the cavity 115 through the water guide wall 140 as will be described later. Has a structure that falls below the opening 112 beyond the inner peripheral wall 114. In this configuration example, the bridge 116, the ring 116, and the inner peripheral wall 114 are provided with a structural strength by bridging between the ring 116 that receives a pressurized water supply pipe 130, which will be described later, and the inner peripheral wall 114 inside the opening 112. And a gap 118.

The foreign body capturing body 120 is a structure provided on the upper surface of the bottom plate 111 in the cavity 115 of the tray main body 110. FIG. 4 is a diagram illustrating a configuration example of the foreign object capturing body 120. In the configuration example shown in FIG. 4, a mesh-like body 122 having a donut-like contour having an opening 121 in the center, and a frame 123 made of concentric wall surfaces and radial wall surfaces standing on the mesh-like body 122 are provided. It has a structure.
Here, it is preferable that the mesh of the reticulate body 122 is a mesh having an appropriate size so that the grain does not pass through.
Gap 124 of wall surfaces constituting the frame body 123, grain product which ride on water flow and has a magnitude of foreign matter get fit, the height of the wall constituting the frame 123, for example, grain was a grain The thickness can be from about half of the thickness of one to about one grain.

  FIG. 5 is a view showing a state in which the saucer body 110 shown in FIG. 3 is combined with the foreign body capturing body 120 shown in FIG. In this example, it is a structural example that can be easily installed by covering the upper surface of the bottom plate 111 in the cavity 115 of the saucer main body 110 with the foreign substance capturing body 120.

  Next, the pressurized water supply pipe 130 and the water guide wall 140 will be described. FIG. 6 is a diagram schematically illustrating a configuration example of the water guide wall 140 and the blade plate 141 inside the foreign matter removing apparatus 100. FIG. 7 is a diagram illustrating a state in which the water guide wall 140 is attached in a state where the tray body 110 and the foreign body capturing body 120 are combined. FIG. 8A is a diagram illustrating a configuration example of the pressurized water supply pipe 130. In this configuration example, the pressurized water supply pipe 130 is a simple pipe. FIG. 8B is a diagram showing a state in which the pressurized water supply pipe 130 is combined with the tray main body 110, the foreign body capturing body 120, and the water guide wall 140.

  As shown in FIG. 11 to be described later, the pressurized water supply pipe 130 is a pipe through which a water flow blown up while entraining the grains in the water storage tank 210 with respect to the water flow flowing in through the air-mixing nozzle 230 passes through the storage water tank. It is a pipe that penetrates from the vicinity of the bottom of 210 to the vicinity of the top of the water guide wall 140 through the opening 112 of the tray body 110. A gap 118 is provided between the pressurized water supply pipe 130 and the inner inner peripheral wall 114 of the tray body 110.

  As shown in FIG. 11, which will be described later, the inlet 131 of the pressurized water supply pipe 130 is provided near the bottom of the storage tank 210, and is provided so as to face the emission port 181 of the mixture nozzle 230. A water stream is driven in from the exit port 181. On the other hand, the outlet 132 of the pressurized water supply pipe 130 is connected to the opening in the upper part of the water guide wall 140 as will be described later, and the water flow overflowing from the outlet 132 of the pressurized water supply pipe 130 like a fountain flows in the outer circumferential direction. Then, it falls from the upper part of the water guide wall 140 along the wall surface of the water guide wall 140.

  The water guide wall 140 is a structure that guides the water flow squirted upward from the pressurized water supply pipe 130 to the foreign matter capturing body 120. In this configuration example, the water guide wall 140 has an umbrella shape and has an opening at the center of the umbrella. The outlet of the water pipe 130 is connected. The water flow including the grains blown upward from the outlet of the pressurized water supply pipe 130 overflows like a fountain and falls down toward the outer periphery due to gravity, and is guided to the upper part of the outer peripheral wall of the water guide wall 140. It has become. If the lid 150 is placed so as to cover the water guide wall 140, water droplets that can be struck by hitting the water guide wall 140, the blade plate 150, and the like are received by the inner wall of the lid 150 and do not scatter.

  The water guide wall 140 is provided with a blade plate 141 that applies a rotational force in a rotating direction to the water flow flowing down the wall surface. In this example, a plate surface is provided in a so-called propeller shape, and a rotational force is applied to the water flow in the circumferential direction of the water guide wall surface by this propeller, and falls down to the foreign material capturing body 120 in the cavity 115 so as to wind a vortex. .

  FIG. 9 is a diagram illustrating a state in which the water flow flowing through the wall surface of the water guide wall 140 is given a rotational force by the blades 141 and becomes a rotating vortex. FIG. 9A is a perspective view schematically showing a state in which a rotational force is applied to the water flow flowing through the water guide wall surface by the blades 141. FIG. 9B is a plan view showing the plane. The water overflowing upward from the outlet 132 of the pressurized water supply pipe 130 falls down by gravity as it is and flows down vigorously along the wall surface of the water guide wall 140, but in the process, the direction is bent by the blade plate 141, and the blade plate 141. It flows while rotating in the direction of guiding, and becomes a rotating flow. The water flow that has become a rotating flow has a rotational moment even when it reaches the foreign matter catching body 120 in the cavity 115, and therefore stays for a while as a vortex that rotates in the circumferential direction on the foreign matter catching body 120 in the cavity 115. It will be. FIGS. 9C and 9D are diagrams schematically showing the water flow in the cavity 115 of the tray body 110 without showing the water guiding wall 140. As shown in FIGS. 9C and 9D, the water flow that overflows from the cavity 115 falls downward from the gap 118 across the inner peripheral wall 114, but in the present invention, while flowing down the water guiding wall 140, Since the rotational force is applied by the blades 141, as shown in FIG. 9 (c) and FIG. 9 (d), the foreign matter trapping body 120 in the cavity 115 stays for a while as a swirl that rotates in the circumferential direction.

  As described above, the function of the vane plate 141 of the water guide wall 140 increases the residence time of the water flow including the grain and foreign matter in the cavity 115 and the distance traveled by rolling on the foreign matter capturing body 120 is long. By becoming, it becomes easy to produce the difference in the movement in a water flow by the specific gravity difference with respect to the water of a grain thing and a foreign material.

  FIG. 10 shows how the water containing the grains flows into the cavity 115 of the saucer body 110 from the upper side, overflows, and falls downward from the gap 118 over the inner peripheral wall 114. It is the figure typically shown in the cross section of the foreign material capturing body 120. FIG. FIG. 10A schematically shows the flow of water flow in the cavity 115 of the saucer body 110, and FIG. 10B shows the grain and foreign matter rolling and sliding on the foreign matter capturing body 120. It is the figure which showed a mode that it moved.

  Since the wall surface of the water guide wall 140 is inclined and its outer peripheral edge is near the outer peripheral wall surface 113 of the cavity 115, the water flow that has flowed into the cavity 115 from above as shown in FIG. In this way, after being received on the outer peripheral side of the mesh body 122 or the frame body 123 of the foreign body capturing body 120, the gap is finally passed over the inner peripheral wall 114 while moving from the outer periphery side of the mesh body 122 or the frame body 123 to the inner peripheral side. Go down to 118.

  Here, the grain and foreign matter are pushed by the water flow and move while rolling or sliding on the surface of the mesh body 122 or the frame 123. The specific gravity of the grain is larger than the specific gravity of water, but the specific gravity of water. Because it is close, it is easy to flow along the water stream, but the specific gravity of the foreign material is larger than the specific gravity of the grain and the difference from the specific gravity of the water is large, so it is difficult to get on the water flow. Arise. In addition, the grain is smooth and has a hard curved surface, and the frictional force against the reticulate body 122 and the frame body 123 is small and there is no protrusion, so there is no drag caused by catching, but pebbles etc. In many cases, the foreign matter is a projection or a sparse surface having a rough outer shape, and is caught in contact with the structure of the frame 123 to receive a strong drag and cannot move in a water flow. As described above, the difference in the frictional force and the presence / absence of catching on the foreign matter capturing body 120 occur due to the difference in the surface state and shape between the grain and the foreign matter.

  FIG. 10B is a diagram schematically showing in an easy-to-understand manner how foreign matter is captured by the foreign matter capturing body 120 and grain is not captured. As shown in FIG. 10 (b), the grain has a curved surface with a smooth outer shape, and the specific gravity is closer to the specific gravity of water compared to the foreign matter, so that the surface of the mesh body 122 or the frame body 123 rolls smoothly. The gap 124 of the frame 123 is moved while sliding or sliding. On the other hand, the foreign matter has projections and sparse surfaces with a rough outer shape, and since the specific gravity is larger than the specific gravity of water compared to the grain, the friction with the mesh body 122 and the frame body 123 is increased. Is abutted against the structure of the frame body 123, receives a strong drag, stops moving in the water flow, and is captured without coming out of the gap 124 of the frame body 123. As described above, only the foreign matter can be easily captured by the foreign matter catching body 120 due to the difference in frictional force between the grain and the foreign matter with respect to the unevenness of the foreign matter catching body or the presence or absence of the catch.

  As described above, in the present invention, the grains and foreign substances are selected based on the difference in specific gravity of water between the grains and foreign matters, the difference in frictional force on the mesh body 122 and the frame body 123, and the presence or absence of catching. In addition, the grain material is to remove only the foreign matter by the foreign matter capturing body 120 while passing the foreign matter capturing body 120.

The overall configuration of the foreign substance removal system 200 incorporating the foreign substance removal apparatus 100 will also be described.
The storage tank 210 is a tank that stores water and grains. The grain to be removed is put together with water. The shape of the housing of the storage tank 210 is not particularly limited, but in this configuration example, the storage tank 210 has a streamlined shape that is narrowed downward. In this way, when the streamlined shape is narrowed down as it goes downward, the grain thrown into the inside has a larger specific gravity than water, so it sinks in the storage tank 210 and moves downward, moving toward the center of the bottom. It will be done. As will be described later, an air-mixing nozzle 230 is provided near the center of the bottom.

  The water valve 220 is an open / close valve for a pressurized water flow, and is connected to a pressurized water source such as a water supply or a pump, and controls the inflow / shielding of the water flow by opening / closing the cock. The structure and shape are not particularly limited.

  The air mixture nozzle 230 is a nozzle configured to mix air with the water flow, and the water flow emitted from the air mixture nozzle 230 blows out in a mixed state. In this configuration example, the outlet 181 of the air mixture nozzle 230 is provided toward the inlet 131 of the pressurized water supply pipe 130 at the bottom of the storage tank 210, and the water flow emitted from the air mixture nozzle 230 is vigorously pressed. It is driven into 130 and the pressurized water supply pipe 130 is raised. Here, since there is a gap between the outlet 181 of the air-mixing nozzle 230 and the inlet 131 of the pressurized water supply pipe 130, and this gap is near the bottom of the storage tank 210, the water flow is vigorously at the inlet of the pressurized water supply pipe 130. When being driven into 131, the surrounding grains in the storage tank 210 are driven in as shown in FIG. The grain in the storage tank 210 gathers near the bottom by gravity, and the water flow vigorously sucks into the inlet 131 of the pressurized water supply pipe 130 and the water pressure near the inlet 131 of the pressurized water supply pipe 130 decreases. Grains are gathered in the vicinity of the inlet 131 of the pressurized water supply pipe 130 one after another and are driven into the inlet 131 of the pressurized water supply pipe 130 by riding on a water stream.

FIG. 12 is a diagram schematically showing the flow of the water flow in the entire foreign matter removal system 200.
For example, a water source 300 such as a water supply and a water valve 220 are connected by a hose or the like. The water flow received by opening the water valve 220 is driven into the inlet 131 of the pressurized water supply pipe 130 through the air mixture nozzle 230. At this time, the surrounding grains in the storage tank 210 are driven while being caught, and the grains rise on the pressurized water supply pipe 130 along the water flow. The water flow overflowing from the outlet 132 of the pressurized water supply pipe 130 flows down along the wall surface of the water guide wall 130. At that time, rotational force in the circumferential direction is applied by the blade plate 150, and a vortex that rotates in the circumferential direction is formed in the cavity 115 of the tray body 110. In the cavity 115, there is a foreign matter capturing body 120, and the grain and foreign matter riding on the water flow roll on the mesh body 122 and the frame 123 of the foreign matter capturing body 120, respectively. Only the grains are captured, and the grain falls on the overflowed water, passes through the inner peripheral wall 114 and falls from the gap 118 to the lower side of the saucer body 110. The lower part is connected to the storage tank 210, and the grain from which the foreign matter has been removed flows back to the storage tank 210 together with water.

  With this series of water flow, the grains return to the inside of the foreign matter removal system 200, and the foreign matter removal of the grains can be repeated continuously with the water valve 220 opened. Grains that have been removed from the foreign matter removal apparatus 100 once through the foreign matter may not be able to be removed once, but the remaining foreign matter disappears as they are circulated several times by continuous operation, and most foreign matter Can be removed.

  As shown in FIG. 13, when the grain can be sufficiently washed and the removal of the foreign matter is finished, the water flow is not returned to the storage tank 210, but is washed out from the grain take-out unit 240 through the sieve 241. The grain is separated and only the grain remaining on the sieve 241 is collected.

  As described above, according to the foreign matter removing apparatus 100 of the present invention according to the first embodiment, it is possible to accurately separate both of the grain material and the foreign matter according to the difference in specific gravity with respect to water and the difference in the friction coefficient with respect to the gap between the foreign matter capturing bodies. Moreover, according to the foreign matter removal system 200 of the present invention according to the first embodiment, the grain for removing the foreign matter is put into the storage tank, and the water flow flowing in through the water valve reaches the foreign matter removal device under the condition of air mixed flow. After blowing up and removing foreign matter with the foreign matter removing device, the water and the grain can be sieved, and it is possible to obtain the grain with little foreign matter mixed therein.

The second embodiment is a configuration example (a configuration example of a two-stage vertical continuous type as an example) in which a foreign substance removing device is provided in a plurality of stages in a vertically continuous manner.
FIG. 14 is a diagram schematically illustrating the appearance of the foreign matter removing apparatus 100a according to the second embodiment. FIG. 15 is a diagram schematically illustrating the internal structure of the foreign matter removing apparatus 100a according to the second embodiment.
As shown in FIGS. 14 and 15, the foreign matter removing apparatus 100 a includes the tray main body 110, the foreign matter catching plate 120, the pressurized water supply pipe 130, the water guiding wall 140, and the lid 150 shown in the first embodiment in two upper and lower stages. It is assembled. For the sake of explanation, the upper one is a1 as a subscript, and the lower one is a2 as a subscript. In addition, since the pressurized water supply pipe 130a1 and the pressurized water supply pipe 130a2 are continuous in the vertical direction, it can be seen that one pressurized water supply pipe 130 is penetrated.

The components of the tray main body 110a1, 110a2, the foreign matter catching plates 120a1, 120a2, the pressurized water supply pipes 130a1, 130a2, the water guiding walls 140a1, 140a2, and the lids 150a1, 150a2 are the same as those in the first embodiment, and are duplicated here. The description to be omitted is omitted.
FIG. 16 is a diagram schematically illustrating the flow of a water flow that circulates inside the foreign matter removing apparatus 100a according to the second embodiment.

  The water flow received from the water source 300 such as tap water by opening the water valve 220 is driven into the inlet 131 of the pressurized water supply pipe 130a2 via the air-mixing nozzle 230. At this time, the surrounding grains in the storage tank 210 are driven while being caught, and the grains rise in the pressurized water supply pipe 130a2 and the pressurized water supply pipe 130a1 along the water flow.

  The water flow overflowing from the outlet 132 of the pressurized water supply pipe 130a1 flows down along the wall surface of the upper water guide wall 130a1. At that time, a rotating force in the rotating direction is applied by the blades 150a1, and a vortex rotating in the rotating direction is formed in the cavity 115 of the tray body 110a1. The grain and foreign matter roll on the water stream and move on the mesh body 122 and the frame 123 of the upper foreign matter catching body 120a1, and the grain matter is not caught but only the foreign matter is caught, and the grain matter overflows. Then, the water falls over the inner peripheral wall 114 and falls from the gap 118 to the lower side of the upper tray body 110a1.

  The water flow that overflows the upper tray body 110a1 flows down along the wall surface of the lower water guide wall 130a2. At that time, as in the upper stage, a rotating force in the rotating direction is applied by the blades 150a2, and a vortex rotating in the rotating direction is formed in the cavity 115 of the tray body 110a2. Grains and foreign matters that have not been removed in the upper stage roll on the net 122 and frame 123 of the lower foreign matter catching body 120a2 on the water stream, and the grains are not caught and only the foreign matters are caught. The grain material rides on the overflowed water, passes over the inner peripheral wall 114, and falls from the gap 118 to the lower side of the lower tray body 110a2. There is a storage tank 210 below the lower tray main body 110a2, and the grains return to the storage tank 210 together with water.

In the configuration example in which the foreign matter removing apparatus according to the second embodiment is provided in a plurality of stages in a vertically continuous manner, foreign matter removal is performed twice in the upper stage and the lower stage while the foreign matter removing apparatus 100a is circulated once.
Moreover, like Example 1, the foreign matter removal of a grain can be repeated continuously with the water valve 220 opened, and the foreign matter remaining while circulating in the foreign matter removal system 200a several times by continuous operation. It will disappear and you will be able to remove most foreign objects.

  As described above, according to the foreign matter removing apparatus 100a of the present invention according to the second embodiment, the foreign matter removing efficiency of the whole foreign matter removing apparatus is improved by adopting a configuration in which a plurality of stages are provided in an up-and-down continuous manner, compared with a single-stage configuration. Foreign matter can be removed in a shorter time.

  The third embodiment is a configuration example in which the foreign substance removing device is provided in a plurality of stages in a horizontal continuous manner (a configuration example of a two-stage horizontal continuous manner as an example). In this example, the front-side foreign matter removing apparatus 100b1 of the horizontal continuous type is a two-stage continuous top-bottom type as in the second embodiment, and the rear-side foreign matter removing apparatus 100b2 is a single piece as in the first embodiment. It has become.

FIG. 17 is a diagram schematically illustrating the appearance of the foreign matter removing apparatus 100b according to the third embodiment.
As shown in FIG. 17, the horizontal continuous front-stage foreign matter removing apparatus 100b1 is a two-stage continuous top-bottom type as in the second embodiment, and includes a tray body 110, a foreign matter catching plate 120, a pressurized water supply pipe. The set of 130, the water conveyance wall 140, and the cover body 150 is distribute | arranged by 2 steps | paragraphs of upper and lower sides continuously. B1 is used as a subscript, b11 on the upper side and b12 on the lower side. As in the first embodiment, the horizontal-continuous rear-stage foreign matter removing apparatus 100b2 includes a set of a tray main body 110, a foreign matter catching plate 120, a pressurized water supply pipe 130, a water guiding wall 140, and a lid 150 as a single unit. B2 is attached as a subscript. In addition, the connection water channel which connects between the storage tank 210b1 of the front | former stage side and the storage tank 210b2 of the back | latter stage side is shown as 250.

  Receiving body 110b11, 110b12, 110b2, foreign matter catching plates 120b11, 120b12, 120b2, pressurized water supply pipes 130b11, 130b12, 130b2, water guide walls 140b11, 140b12, 140b2, lids 150b1, 150b2 are the same as those in the first embodiment or the first embodiment. This is the same as that in Example 2, and redundant description is omitted here.

FIG. 20 is a diagram schematically illustrating the flow of water in the foreign matter removing apparatus 100b and the foreign matter removing system 200b according to the third embodiment.
The water flow received from the water source 300 such as tap water by opening the water valve 220b1 is driven into the inlet 131 of the pressurized water supply pipe 130b1 through the air-mixing nozzle 230b1. At this time, the surrounding grains in the storage tank 210b1 are driven while being caught, and the grains rise on the pressurized water supply pipe 130b1 along the water flow.

  The water flow overflowing from the outlet 132 of the pressurized water supply pipe 130b1 flows down along the wall surface of the upper water guide wall 140b11. At that time, a rotational force in the circumferential direction is applied by the blade plate 150b11, and a vortex rotating in the circumferential direction is formed in the cavity 115b11 of the tray body 110b11. Grain and foreign matter roll on the net 122 and frame 123 of the upper foreign matter catching body 120b11 on the water stream and move, the grain matter is not caught but only the foreign matter is caught, and the grain overflows. Then, the water falls over the inner peripheral wall 114 and falls from the gap 118 to the lower side of the upper tray body 110b11.

  Below the upper tray body 110b11 is a lower water guide wall 140b12, which flows down along the wall surface of the lower water guide wall 140b12. At that time, rotational force in the circumferential direction is applied by the blades 150b12, and a vortex that rotates in the circumferential direction is formed in the cavity 115b12 of the tray body 110b12. Grain and foreign matter roll on the water flow and move on the mesh body 122 and the frame 123 of the lower foreign matter catching body 120b12, the grain matter is not caught and only the foreign matter is caught, and the grain matter overflows. Then, the water falls over the inner peripheral wall 114 and falls from the gap 118 to the lower side of the lower tray body 110b12.

  There is a connection water channel 250 below the lower tray body 110b12, and the water flow overflowing the right tray body 110b12 does not return to the right storage tank 210b1, but enters the left storage tank 210b2 through the connection water channel 250. Is done.

  In the left storage tank 210b2, similarly to the right side, the water valve 220b2 is opened and the water flow received from the water source 300 such as tap water is driven into the inlet 131 of the pressurized water supply pipe 130b2 via the air-mixing nozzle 230b2. At this time, the surrounding grains in the storage tank 210b2 are driven while being caught, and the grains rise on the pressurized water supply pipe 130b2 along the water flow.

  The water flow overflowing from the outlet 132 of the pressurized water supply pipe 130b2 flows down along the wall surface of the water guide wall 130b2. At that time, a rotational force in the circumferential direction is applied by the blade plate 150b2, and a vortex that rotates in the circumferential direction is formed in the cavity 115b2 of the tray body 110b2. The grain and the foreign matter that has not been removed by the right foreign matter removing apparatus 100b1 roll on the water flow and move on the mesh body 122 and the frame 123 of the foreign matter catching body 120b2, and the grain matter is not caught and only the foreign matter is caught. Is captured and the grain falls on the overflowed water, passes over the inner peripheral wall 114, and falls from the gap 118 to the bottom of the saucer body 110b2.

In this configuration example, there is a grain take-out unit 240 below the saucer body 110b2, and the water flow is discharged from the grain take-out unit 240 through the sieve 241 without returning the water flow to the storage tank 210b2, and the water flow and the grains are separated. Only the grains that have been separated and remained on the sieve 241 are collected.
In the configuration example in which the foreign matter removing apparatus according to the third embodiment is provided in a plurality of stages in a horizontal continuous manner, the foreign matter removal is executed twice by the right foreign matter removing device 100b1 and the left foreign matter removing device 100b2.

  As described above, according to the foreign matter removing apparatus 100b and the foreign matter removing system 200b of the present invention according to the third embodiment, the foreign matter removing efficiency of the whole foreign matter removing apparatus is improved by adopting a configuration in which a plurality of stages are provided in a horizontal continuous manner. Foreign matter removal can be performed in a shorter time than the one-stage configuration.

  Although the preferred embodiments of the configuration example of the foreign matter removing apparatus of the present invention have been illustrated and described above, it will be understood that various modifications can be made without departing from the technical scope of the present invention. .

  The foreign matter removing apparatus of the present invention can be widely applied to devices that remove foreign matters mixed in grains such as red beans and rice.

DESCRIPTION OF SYMBOLS 100 Foreign material removal apparatus 110 Receptacle body 120 Foreign material capture body 130 Pressurized water supply pipe 140 Water transfer wall 150 Cover body 200 Foreign material removal system 210 Reservoir 220 Water valve 230 Air-mixing nozzle 240 Grain extraction part 250 Connection channel 300 Water source

Claims (4)

A foreign matter removing device that separates grain and foreign matter mixed in the grain by water flow, and removes the foreign matter,
A bottom plate having an opening in the center, an outer peripheral wall standing on the outer peripheral edge of the bottom plate, and a saucer body comprising an inner peripheral wall standing on the opening edge of the bottom plate;
A foreign matter capturing body that covers the upper surface of the bottom plate of the saucer body, and comprises a mesh body that has a mesh that does not pass through the grain and has an opening at the center, and a wall surface that constitutes a frame body standing on the mesh body A foreign matter capturing body provided with a gap between the grains and the foreign matter in a size that allows the foreign matter to fit in the water stream;
A pressurized water supply pipe penetrating the inside of the opening of the tray body and standing upward;
A water guide wall that guides the water flow fountained upward from the pressurized water supply pipe toward the foreign matter capturing body located below,
A slat that provides a rotational force in the circumferential direction for the water flow flowing downward along the water guide wall surface;
By rotating the water flow on the foreign material capturing body in the circulation direction by the blades, increasing the residence time until it flows downward from the opening, and in the water flow due to the specific gravity difference of the grain and the foreign material with respect to water The foreign matter removing device makes it easy for only the foreign matter to be caught by the foreign matter catching body due to the difference in movement and the difference in frictional force between the grain and the foreign matter against the foreign matter catching body or the presence or absence of catching.   The foreign matter removing device is connected in multiple stages of two or more upper and lower stages, and the water flow that flows downward from the opening of the upper foreign matter removing device is connected so as to flow into the wall surface of the water guide wall of the lower foreign matter removing device. The foreign matter removing apparatus according to claim 1, wherein   The foreign matter removing devices are arranged side by side in two or more stages and connected so that the water flow flowing downward from the opening of one foreign matter removing device flows into the wall surface of the water guide wall of the other foreign matter removing device. The foreign matter removing apparatus according to claim 1.   4. The water tank for temporarily storing the grain, a water valve for receiving the water flow that sucks the grain and air of the tank and blows up the pressurized water supply pipe, and the water tank according to claim 1. A foreign matter removing system, and a foreign matter removing system comprising a sieve that separates the grain that has flowed out of the foreign matter removing device.

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