Cleaning equipment and circulation equipment

Abstract

To provide a washing device that prevents a foreign body from adhering to a pump or a pipe line.SOLUTION: A circulating device 20 circulates washing liquid in a washing tank by using a pump. The circulating device 20 comprises: a plate for partitioning the washing tank into a first area and a second area; a filtering part 30 for filtering the washing liquid; and a nozzle 40 for discharging the washing liquid. The nozzle 40 comprises a driving fluid port, a sucked fluid port, and a discharge port. The plate is provided with a first hole from which the washing liquid is made to flow into the second area, and a second hole through which the washing liquid discharged from the nozzle is passed. The circulating device comprises a wall surrounding a portion of the filtering part between the filtering part and the nozzle.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a cleaning device and a circulation device. [Background technology]

[0002] Japanese Patent No. 6840888 (hereinafter referred to as Patent Document 1) describes a cleaning device that circulates cleaning liquid in a cleaning tank using a pump and nozzles. This cleaning device has a tank equipped with nozzles inside the cleaning tank, which swirls the cleaning liquid. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6840888 Summary of the Invention [Problem to be solved by the invention]

[0004] In the cleaning device described in Patent Document 1, foreign matter adheres to the pump and pipes, and therefore the foreign matter must be removed. Furthermore, the work of removing the foreign matter is time-consuming.

[0005] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a cleaning device that prevents foreign matter from adhering to pumps and pipelines. [Means for solving the problem]

[0006] A circulation device according to one solution of the present invention circulates the cleaning liquid in a cleaning tank using a pump, and this circulation device has a plate that divides the cleaning tank into a first area and a second area, a filtration section that filters the cleaning liquid, and a nozzle that ejects the cleaning liquid. The nozzle has a driving fluid port, a suction fluid port, and a discharge port, and the plate has a first hole for allowing the cleaning liquid to flow into the second area and a second hole for allowing the cleaning liquid discharged from the nozzle to pass through, and is characterized by having a wall between the filtration section and the nozzle that surrounds part of the filtration section.

[0007] In addition, the wall of the circulation device according to one solution of the present invention is characterized in that it separates the second area and forms a convection flow toward the pump and a convection flow toward the suction fluid port of the nozzle.

[0008] In addition, the nozzle of the circulation device according to one solution of the present invention has a duct for taking in gas, and the gas is mixed with the cleaning liquid sprayed from the nozzle.

[0009] In addition, a cleaning device comprising the circulation device, cleaning tank, and pump according to one solution of the present invention is characterized by including a bottom plate for inclining the bottom surface of the cleaning tank. [Effects of the Invention]

[0010] According to one solution of the present invention, it is possible to prevent foreign matter from adhering to the pump and pipes of the cleaning device. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a schematic top view of a cleaning apparatus according to an embodiment of the present invention; [Figure 2] FIG. 2 is a cross-sectional view taken along line AA' in FIG. [Figure 3] FIG. 2 is a schematic front view of the circulation device of FIG. 1. [Figure 4] FIG. 2 is a schematic perspective view of the circulation device of FIG. 1 with a plate 21 removed. [Figure 5] FIG. 3 is a schematic diagram of the nozzle shown in FIG. 2. [Figure 6] FIG. 3 is a cross-sectional view of the nozzle shown in FIG. 2. BEST MODE FOR CARRYING OUT THE INVENTION

[0012] In the following embodiments of the present invention, the description will be divided into multiple sections as necessary, but in principle, they are not unrelated to each other, and one is related to the other as a partial or complete modification, detail, etc. For this reason, in all the drawings, components having the same function are given the same reference numerals, and repeated explanations thereof will be omitted.

[0013] Furthermore, the number of components (including the number, numerical value, amount, range, etc.) is not limited to a specific number, and may be more or less than a specific number, unless otherwise specified or clearly limited in principle to a specific number. Furthermore, when referring to the shape of a component, etc., it includes things that are substantially similar or approximate to that shape, etc., unless otherwise specified or clearly considered not to be the case in principle.

[0014] An embodiment of the present invention will be described with reference to the drawings, in which arrows indicate the flow of fluid.

[0015] Fig. 1 is a schematic top view of a cleaning apparatus according to an embodiment of the present invention, and Fig. 2 is a schematic cross-sectional view taken along line AA' in Fig. 1.

[0016] The cleaning device 10 is a device for cleaning products and materials produced in, for example, agriculture or fishing. The cleaning device 10 includes a cleaning tank 11 that contains a cleaning liquid and a circulation device 20 that circulates the cleaning liquid.

[0017] The cleaning tank 11 is provided with a plate 21 that divides the tank interior into a first area 12 and a second area 13. This plate 21 is made up of multiple plates, and in the present invention, it is composed of a center 21a and left and right 21b, 21b (Fig. 3). Furthermore, the plate 21 is not connected to the cleaning tank 11 by a connector (such as a packing).

[0018] For example, products and materials produced in agriculture and fishing are placed in the first area 12. In the first area 12, foreign matter such as mud, leaves, and insects adhering to the items are washed off. The second area 13 is provided with a circulation device 20 that generates convection within the cleaning tank 11. The circulation device 20 also includes plates 21 that divide the cleaning tank 11, a filtration section 30 that filters the cleaning liquid, and the like.

[0019] The floor of the cleaning tank 11 is provided with a bottom plate 14 that slopes downward as it moves away from the nozzle 40. A perforated slat 15 made of, for example, punched metal is provided on part or the entire upper surface of the bottom plate 14. This allows heavy mud and other foreign matter adhering to the object to be cleaned to sink through the holes provided in the slat 15 and settle on the bottom plate 14. Furthermore, because the floor of the cleaning tank 11 is sloped by the bottom plate 14, mud and other foreign matter gather in one place. The cleaning solution in the first area 12 passes through the holes in the slats 15 and flows into the second area 13. At this time, the slats 15 remove large foreign objects (such as leaves, stones, and roots) from the cleaning solution in the first area 12. Furthermore, because the bottom plate 14 is provided at an angle, heavy foreign objects such as mud that sink through the holes in the slats 15 gather in one place and settle on the bottom plate 14 on the side opposite the nozzle 40. Therefore, the cleaning solution flows from the first area 12 to the second area 13, but small foreign objects such as mud that sink through the holes in the slats 15 are unlikely to flow into the second area. In one embodiment of the present invention, the bottom plate 14 is inclined downward to the left in FIG. 2, but this is not limiting and the bottom plate 14 may be in a cone shape or an inverted cone shape.

[0020] The cleaning device 10 is equipped with a pump P that circulates the cleaning liquid in the cleaning tank 11. One end of the pump P is connected to a water intake pipe 24 that connects to a hole provided in the wall of the cleaning tank 11. The other end of the pump P communicates with a supply pipe 25 (not shown) that connects to two nozzles 40. Therefore, the cleaning liquid passes through the intake pipe 24 connected to the cleaning tank 11 and flows into the supply pipe 25 connected to the nozzle 40 . In this configuration, the pump P is provided outside the cleaning tank 11, but this is not restrictive and the pump P may be provided in the second area 13.

[0021] Fig. 3 is a schematic front view of the circulation device of Fig. 1. Fig. 4 is a schematic perspective view of the circulation device of Fig. 1 with plate 21 removed.

[0022] The circulation device 20 is provided in the second area 13 of the cleaning tank 11 and has the function of circulating and filtering the cleaning liquid in the cleaning tank 11. The circulation device 20 has a back plate 17 on the back side thereof. A part of the lower part of the back plate 17 is hollowed out, so that the cleaning liquid can pass through the circulation device 20. The circulation device 20 has a hook 16 on the upper part of the back plate 17 for fixing the circulation device 20 by hooking it onto the wall of the cleaning tank 11 .

[0023] Furthermore, the plate 21a of the circulation device 20 has a lattice-shaped slit 22 on the top, so that the cleaning liquid can flow from the first area 12 to the second area 13. The width and shape of the opening area of ​​the slit 22 (one hole) may be changed according to the size of the object to be cleaned.

[0024] In addition, a filtration unit 30 is provided on the back side of the slit 22. The filtration unit 30 is a substantially rectangular parallelepiped, and is open on the surface in contact with the slit 22 and on the top. The filtration unit 30 is made of, for example, punched metal and has many holes. Therefore, the filtration unit 30 removes foreign matter contained in the cleaning liquid. The filtering unit 30 may be configured to be removable from the circulation device 20, which makes it easier to remove foreign matter that has accumulated in the filtering unit 30.

[0025] The plate 21 of the circulation device 20 is provided with nozzle holes 23 that allow the cleaning liquid ejected from the nozzles 40 to flow through the first area 12 . The outlet 43 from which the nozzle 40 sprays the cleaning liquid is provided close to the nozzle hole 23, and a predetermined distance is maintained so that the nozzle 40 does not come into contact with the nozzle hole 23 even when the nozzle 40 vibrates. Even if a gap is maintained between the outlet 43 of the nozzle 40 and the nozzle hole 23, the force of the cleaning liquid sprayed from the nozzle 40 makes it difficult for the cleaning liquid stored in the first area 12 to flow (backflow) into the nozzle hole 23.

[0026] The circulation device 20 has walls (plates) 27. The walls (plates) 27 are provided on both sides (walls 27a, 27b) and on the back (wall 27c) of the filtration section 30, and are spaced a predetermined distance from the filtration section 30. The walls 27a and 27b have their lower ends bent at right angles toward the inside of the circulation device 20.

[0027] The circulation device 20 has a wall 27d between the filtering section 30 and the nozzle 40. The wall 27d is provided between the filtering section 30 and the nozzle 40 with a predetermined distance therebetween. In addition, both ends of wall 27d are bent downward to cover nozzle 40, with one end connected to wall 27a and the other end connected to wall 27b. As a result, circulation device 20 has space 26a surrounded by wall 27a and wall 27d and having a U-shaped cross section, and space 26b surrounded by wall 27b and wall 27d and also having a U-shaped cross section.

[0028] The circulation device 20 has a water intake port 28 in the lower part of the wall 27a, which is in communication with the water intake pipe 24. Therefore, the pump P takes in the cleaning liquid filtered by the filtration unit 30.

[0029] The circulation device 20 also includes a tunnel 29 that connects the gap 26a and the gap 26b. The tunnel 29 allows the cleaning liquid remaining in the gaps 26a and 26b to flow through.

[0030] As described above, the circulation device 20 has a wall 27d between the filtration unit 30 and the nozzle 40. Furthermore, the circulation device 20 has walls 27a and 27b on the left and right sides of the filtration unit 30 and a wall 27c on the back side. As a result, the cleaning liquid filtered by the filtration unit 30 flows along the wall 27, through the gap 26a, and into the water intake 28. The cleaning liquid flowing into the gap 26b then passes through the tunnel 29 and flows into the water intake 28. In other words, the pump P takes in cleaning liquid from which foreign matter and the like has been removed. This prevents the pump P and the pipelines from being clogged with foreign matter and the like.

[0031] FIG. 5 is a schematic diagram of the nozzle 40 shown in FIG. 2, and FIG. 6 is a cross-sectional view of the nozzle shown in FIG.

[0032] The circulation device 20 includes a nozzle 40. The nozzle 40 includes a driving fluid port 41 connected to the pump P, a discharge port 43 for ejecting the cleaning liquid, and a converging portion 44 between the driving fluid port 41 and the discharge port 43. When the cleaning liquid flows into the driving fluid port 41 of the nozzle 40, it flows toward the driving force generator 46. Here, the diameter of the driving force generator 46 is narrower than that of the driving force port 41, so the flow rate of the cleaning liquid increases. In addition, the nozzle 40 has a driving fluid port 41 and a converging portion 44 that are spaced apart from each other, and the space between them (the suction fluid port 42) is connected by a bridge 45. The bridge 45 provides a space (the suction fluid port 42), which allows cleaning liquid around the nozzle 40 to be taken in. Furthermore, the nozzle 40 converges at a converging portion 44 midway from the driving fluid port 41 to the discharge port 43. After the nozzle 40 takes in the cleaning liquid around the nozzle at the suction fluid port 42, the nozzle 40 is converged by the converging portion 44 midway on the way to the discharge port 43.

[0033] Here, the driving fluid port 41 of the nozzle 40 has a conical shape that narrows toward the flow generating portion 46. The Venturi effect occurs when the fluid flow is narrowed, and the flow rate of the cleaning liquid flowing toward the flow generating portion 46 increases. This reduces the pressure around it, and the cleaning liquid around the open suction fluid port 42 flows in. The cleaning liquid that flows in from the suction fluid port 42 is then mixed with the cleaning liquid flowing out from the flow generating portion 46. The flow rate of the mixed cleaning liquid increases again due to the converging portion 44 of the nozzle 40, and the mixed cleaning liquid is ejected from the discharge port 43. Therefore, the nozzle 40 can supply and discharge cleaning liquid in an amount greater than the discharge capacity of the pump P.

[0034] Furthermore, the nozzle 40 has a duct 47 that communicates with the convergent portion 44 that converges inside the pipe. One end of the duct 47 communicates with the convergent portion 44, and the other end extends to above the liquid surface. Therefore, when the cleaning liquid flows from the flow generating section 46 into the converging section 44, gas is taken into the converging section 44 through the duct 47 and mixed with the cleaning liquid flowing through the nozzle 40, allowing the cleaning liquid containing bubbles to be discharged. More specifically, when the cleaning liquid flows into the convergent section 44 where the inside of the nozzle 40 narrows, the pressure around it decreases. At this time, the pressure inside the convergent section 44 is lower than the pressure (atmospheric pressure) at the other end of the duct 47, so air is drawn into the convergent section 44 through the duct 47. This allows air to be supplied from the duct 47 to the inside of the convergent section 44. At this time, cavitation is likely to occur, the liquid and gas mix together, and cleaning liquid containing bubbles is generated.

[0035] Even if the object to be cleaned has foreign matter such as leaves, wood chips, or insects attached to it, the cleaning liquid containing tiny bubbles is sprayed from the nozzle 40 due to the cavitation phenomenon, and the surface dirt of the object can be washed away. Even if the object to be cleaned has mud attached to it, the force of the spray causes the bubbles to collide and break up, allowing the muddy dirt to be washed away. Furthermore, because the sprayed cleaning liquid contains bubbles, it can be gently cleaned without scratching the object to be cleaned. In the present invention, a configuration has been described in which gas is taken in from the duct 47, but this is not limiting, and for example, a configuration may be adopted in which a liquid such as a disinfectant is taken in to clean or disinfect the object to be cleaned.

[0036] Next, the flow of the cleaning liquid in the cleaning device 10 will be described. The cleaning liquid in the cleaning tank 11 is taken in by the pump P connected to the water intake pipe 24 and sent to the driving fluid port 41 of the nozzle 40 connected to the supply pipe 25. The cleaning liquid then becomes the driving liquid for the nozzle 40 and mixes with the cleaning liquid around the nozzle 40 and the gas sucked in from the duct 47. As a result, the nozzle 40 sprays out from the discharge port 43 a quantity of cleaning liquid that exceeds the discharge capacity of the pump P. The cleaning liquid ejected from the nozzle 40 passes through the nozzle hole 23 of the plate 21 and flows into the first area 12 .

[0037] The cleaning liquid sprayed into the first area 12 bounces off the wall of the cleaning tank 11, forming flows such as convection 51 (FIG. 1) and convection 52 (FIG. 2). The cleaning liquid contains bubbles due to the cavitation phenomenon of the nozzle 40, so that the object to be cleaned placed in the first area 12 is gently cleaned without being damaged.

[0038] The cleaning liquid in the convection currents 51 and 52 passes through the slits 22 of the circulation device 20 and flows into the second area 13. After foreign matter and the like is removed from the cleaning liquid that has flowed into the second area 13 in the filtration section 30, the cleaning liquid flows along the wall 27 into the spaces 26a and 26b. The cleaning liquid that has flowed into the space 26a flows into the water intake 28. The cleaning liquid that has flowed into the space 26b moves from the tunnel 29 to the space 26a, passes through the water intake 28, and flows into the water intake pipe 24 that is connected to the pump P.

[0039] On the other hand, the cleaning liquid remaining in the second area 13 is sucked into the suction fluid port 42 of the nozzle 40 and ejected from the discharge port 43 into the first area 12.

[0040] As described above, in the configuration of the cleaning device 10 of the present invention, the cleaning tank 11 is divided into the first area 12 and the second area 13 by the plate 21 of the circulation device 20 . Moreover, the force of the cleaning liquid being ejected from the nozzle 40 of the circulation device 20 causes the cleaning liquid in the first area 12 to flow like a convection current (flow path) 51 and a convection current (flow path) 52 . Furthermore, the wall 27 of the circulation device 20 causes the cleaning liquid in the second area 13 to flow in two convection currents: convection current 53 and convection current 54. As a result, convection current 53 sends the cleaning liquid to the pump after removing foreign matter, thereby preventing the pump P and the pipelines from being clogged with foreign matter. Convection current 54 then flows into the suction fluid port 42 of the nozzle 40 and is ejected from the discharge port 43.

[0041] As described above, the amount of cleaning liquid ejected from nozzle 40 is greater than the amount of cleaning liquid sent from pump P to driving fluid port 41 of nozzle 40. Therefore, the strength with which cleaning liquid is sucked into suction fluid port 42 of nozzle 40 is greater than the strength with which pump P sucks cleaning liquid. In other words, without wall 27, cleaning liquid that has passed through filtration section 30 will be sucked into suction fluid port 42 of nozzle 40, making it difficult for pump P to suck cleaning liquid. Therefore, by providing a wall (plate) 27 and generating a flow of convection (flow path) 53, the cleaning liquid that has passed through the filtration unit 30 is sucked into the pump P. Also, by providing a wall 27 and generating a flow of convection (flow path) 54, the cleaning liquid is sucked into the suction fluid port 42 of the nozzle 40. This prevents the pump P from having difficulty sucking in the cleaning liquid.

[0042] The plate 21 in this configuration has been described as having a center 21a and left and right 21b, 21b, but this is not limiting and the plate 21 may be a single plate or may be inclined when viewed from above to make it easier for the air to flow into the slit 22. In addition, the inner wall of the cleaning tank 11 may be inclined or curved so that the cleaning liquid in the first area 12 can easily convect. In this configuration, the number of nozzles 40 is two, but this is not restrictive and the number may be one or two or more. Furthermore, the water intake pipe 24 connected to the pump P is configured to be connected by drilling a hole in the wall of the cleaning tank 11, but this is not limiting and, for example, the water intake pipe 24 may be piped so as to climb over the wall without drilling a hole in the wall of the cleaning tank 11.

[0043] As described above, the configuration of the present invention has been described based on the embodiment, but the present invention is not limited to the above embodiment and can be modified within the scope of the gist of the present invention. [Explanation of symbols]

[0044] 10 Cleaning equipment 11 Cleaning tank 12 Area 1 13 Area 2 14 Bottom plate 15 Slatted bed 16 Hook 17 Back Plate 20 Circulation device 21 Plate (21a center, 21b left and right) 22 Slit 23 nozzle hole 24 Water intake pipe 25 Supply pipe Between 26a and 26b 27a, 27b, 27c, 27d Wall (plate) 28 Water Intake 29 Tunnel 30 Filtration section 40 nozzles 41 Driving fluid port 42 Suction fluid port 43 Discharge port 44 Convergence section 45 Bridge 46 Flow generation section 47 Duct 51, 52, 53, 54 Convection (flow path) P pump

Claims

1. A circulation device that circulates a cleaning liquid in a cleaning tank using a pump, The circulation device includes a plate that divides the cleaning tank into a first area and a second area; a filtration unit that filters the cleaning liquid; a nozzle for discharging the cleaning liquid; the nozzle has a driving fluid port, a suction fluid port, and a discharge port; the plate is provided with a first hole through which the cleaning liquid flows into the second area and a second hole through which the cleaning liquid discharged from the nozzle passes; A wall is provided between the filtering section and the nozzle to surround a part of the filtering section. A circulation device characterized by:

2. the wall partitions the second area; Convection flow to the pump; convection flowing to the intake fluid port of the nozzle; Forming 2. The circulation device according to claim 1.

3. The nozzle has a duct for taking in gas, and mixes the gas with the cleaning liquid ejected from the nozzle.

3. The circulation device according to claim 1 or 2.

4. The circulation device according to any one of claims 1 to 3; The cleaning tank and a pump are provided, A bottom plate is provided to incline the bottom surface of the cleaning tank. A cleaning device characterized by:

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