JP2023090268A - Washing device and circulating device - Google Patents

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

Patent Act Article 30, Paragraph 2 application filed October 13, 2021, 11th Agriculture Week

Patent Act Article 30, Paragraph 2 application filed October 7, 2021, https://www. azx-inc. co. jp/ws/

Patent Act Article 30, Paragraph 2 application filed December 2, 2021 https://item. rakuten. co. jp/plussysbtob/93656/https://store. shopping. Yahoo. co. jp/plussysbtob/93656. html? sc_i=shp_pc_search_itemlist_shsrg_img https://wowma. jp/bep/m/klist2? e_scope=0&ipp=40&user=44206216&keyword=%93%F1%97%AC%91%CC&clow=&high=&submit. x=0 & submit. y=0

The present invention relates to cleaning equipment and circulation equipment.

Japanese Patent No. 6840888 (hereinafter referred to as Patent Document 1) describes a cleaning apparatus that circulates cleaning liquid in a cleaning tank using a pump and a nozzle. In this washing apparatus, a tank having a nozzle is provided in the washing tank to swirl the washing liquid.

Japanese Patent No. 6840888

In the washing apparatus as disclosed in Patent Document 1, foreign matter adheres to the pump and pipes, so it is necessary to remove the foreign matter. In addition, the task of removing the foreign matter was troublesome.

SUMMARY OF THE INVENTION Accordingly, one object of the present invention is to provide a cleaning apparatus that prevents foreign substances from adhering to pumps and pipes.

A circulation device according to one solution means of the present invention uses a pump to circulate the cleaning liquid in the cleaning tank. The circulation device comprises a plate that divides the cleaning tank into a first area and a second area; It has a filtering part for filtering the cleaning liquid and a nozzle for discharging 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 through which the cleaning liquid flows into the second area and a second hole through which the cleaning liquid discharged from the nozzle passes. is provided, and a wall surrounding a portion of the filtering section is provided between the filtering section and the nozzle.

Further, the wall of the circulation device according to one solution means of the present invention partitions the second area and forms a convection flow to the pump and a convection flow to the intake fluid port of the nozzle.

Further, the nozzle of the circulation device according to one solution means of the present invention has a duct for taking in gas, and mixes the gas with the cleaning liquid ejected from the nozzle.

According to another aspect of the present invention, there is provided a cleaning apparatus comprising a circulation device, a cleaning tank, and a pump.

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 apparatus.

1 is a schematic top view of a cleaning apparatus according to one embodiment of the present invention; FIG. 2 is a cross-sectional view taken along line A-A' in FIG. 1; FIG. FIG. 2 is a schematic front view of the circulation device of FIG. 1; FIG. 2 is a schematic perspective view of the circulator of FIG. 1 excluding a plate 21; FIG. 3 is a schematic diagram of a nozzle shown in FIG. 2; Figure 3 is a cross-sectional view of the nozzle shown in Figure 2;

In the following embodiments of the present invention, the description will be divided into a plurality of sections when necessary, but in principle they are not unrelated to each other, and one is a part or all of the other It is in. For this reason, members having the same function are denoted by the same reference numerals in all the drawings, and repeated description thereof will be omitted.

In addition, the number of components (including number, numerical value, amount, range, etc.) is limited to a specific number, unless otherwise specified or clearly limited to a specific number in principle. It may be more than or less than a specific number. In addition, when referring to the shape of a component, etc., it shall include things that are substantially similar to or similar to the shape, etc., unless otherwise specified or in principle clearly considered otherwise .

An embodiment of the present invention will be described based on the drawings. Arrows in the figure represent the flow of fluid.

FIG. 1 is a schematic top view of a cleaning device according to one embodiment of the present invention. FIG. 2 is a schematic cross-sectional view taken along line A-A' in FIG.

The cleaning device 10 is, for example, a cleaning device for cleaning products and materials produced in agriculture and fisheries. The cleaning apparatus 10 includes a cleaning tank 11 containing cleaning liquid, and a circulation device 20 for circulating the cleaning liquid.

The washing tank 11 is provided with a plate 21 for partitioning the inside of the tank, and the inside of the tank is divided into a first area 12 and a second area 13 . This plate 21 is provided with a plurality of plates, and in the present invention, it is composed of a center 21a and left and right plates 21b and 21b. (Fig. 3)
Also, the plate 21 is not connected to the cleaning tank 11 by a connector (packing or the like).

For example, objects to be cleaned such as products and materials produced in agriculture and fishery are put into the first area. In the first area 12, dirt, leaves, insects, and other foreign substances adhering to the thrown-in object to be washed are washed off.
In the second area 13 , a circulation device 20 is provided to generate convection in the cleaning tank 11 . The circulation device 20 also includes a plate 21 that divides the cleaning tank 11, a filtration unit 30 that filters the cleaning liquid, and the like.

The floor surface of the cleaning tank 11 has a bottom plate 14 that slopes downward as the distance from the nozzle 40 increases. A perforated grate 15 made of, for example, punching metal is provided on a part or the entire surface of the upper surface. As a result, foreign matter such as heavy mud adhering to the object to be cleaned sinks through the holes provided in the drainboard 15 and settles on the bottom plate 14 . In addition, since the floor surface of the washing tank 11 is inclined by the bottom plate 14, foreign matter such as mud gathers in one place.
The cleaning liquid in the first area 12 passes through the holes in the drainboard 15 and flows to the second area 13 . At this time, large foreign matters (leaves, stones, roots, etc.) are removed from the cleaning liquid in the first area 12 by the drainboard 15 . In addition, since the bottom plate 14 is provided at an angle, heavy foreign matter such as mud that settles down through the holes of the drainboard 15 gathers in one place and settles on the bottom plate 14 on the side opposite to the nozzle 40 . Therefore, the cleaning liquid flows from the first area 12 to the second area 13, but small foreign matter such as mud that sinks through the holes of the drainboard 15 is less likely to flow into the second area.
In one embodiment of the present invention, the direction in which the bottom plate 14 inclines downward is the left side in FIG.

The cleaning device 10 has a pump P for circulating the cleaning liquid in the cleaning tank 11 . One end of the pump P is connected to a water intake pipe 24 connected to a hole provided in the wall of the washing tank 11 . Also, the other end communicates with a supply pipe 25 connected to two nozzles 40 (not shown).
Therefore, the cleaning liquid flows through the intake pipe 24 connected to the cleaning layer 11 and the supply pipe 25 connected to the nozzle 40 .
Although the pump P in this configuration is provided outside the cleaning tank 11, it may be provided in the second area 13 without being limited to this.

3 is a schematic front view of the circulation device of FIG. 1. FIG. FIG. 4 is a schematic perspective view of the circulation device of FIG. 1 with the plate 21 removed.

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 is provided with a back plate 17 on the back. Since the lower part of the rear plate 17 is partially hollowed out, the cleaning liquid flows through the circulation device 20 .
A hook portion 16 for fixing the circulation device 20 by hooking on the wall of the cleaning tank 11 is provided on the upper portion of the back plate 17 of the circulation device 20 .

Further, the plate 21a of the circulation device 20 has a grid-like slit 22 on its upper portion. Therefore, the cleaning liquid can flow from the first area 12 to the second area 13 .
The width and shape of the opening area (one hole) of the slit 22 may be changed according to the size of the object to be cleaned.

A filtering section 30 is provided on the back side of the slit 22 . The filter part 30 is substantially rectangular, and the surface in contact with the slit 22 and the upper part are open. The filtering part 30 is made of, for example, a punching metal and has pores. Therefore, the filtering unit 30 removes foreign substances contained in the cleaning liquid.
In addition, the filtering section 30 may be configured to be removed from the circulation device 20, so that the foreign matter accumulated in the filtering section 30 can be removed more easily.

A plate 21 of the circulation device 20 is provided with a nozzle hole 23 through which the cleaning liquid ejected from the nozzle 40 flows to the first area 12 .
A discharge port 43 through which the nozzle 40 ejects the cleaning liquid is provided close to the nozzle hole 23 and is kept at a predetermined distance so as not to come into contact with the nozzle hole 23 even if the nozzle 40 vibrates. Even if a gap is maintained between the discharge port 43 of the nozzle 40 and the nozzle hole 23 , the cleaning liquid stored in the first area 12 is unlikely to flow into the nozzle hole 23 (backflow) due to the force of the cleaning liquid ejected from the nozzle 40 . .

The circulation device 20 has a wall (plate) 27 . Walls (plates) 27 are provided on both sides (walls 27a and 27b) and the rear surface (wall 27c) of filtering section 30 and have a predetermined distance from filtering section 30 .
The walls 27a and 27b are bent at right angles toward the inside of the circulation device 20 at their lower ends.

The circulation device 20 has a wall 27 d between the filtering section 30 and the nozzle 40 . The wall 27 d is provided with a predetermined distance between the filtering section 30 and the nozzle 40 .
Both ends of the wall 27d are bent downward to cover the nozzle 40, one end is connected to the wall 27a and the other end is connected to the wall 27b. Thus, the circulation device 20 has a U-shaped space 26a surrounded by walls 27a and 27d, and a U-shaped space 26b surrounded by walls 27b and 27d.

The circulation device 20 has a water intake port 28 communicating with the water intake pipe 24 at the bottom of the wall 27a. Therefore, the pump P takes in the cleaning liquid filtered by the filtering section 30 .

The circulation device 20 also includes a tunnel 29 that connects the space 26a and the space 26b. The tunnel 29 allows the washing liquid remaining in the space 26a and the space 26b to flow.

Thus, the circulation device 20 has a wall 27 d between the filtering section 30 and the nozzle 40 . Further, the circulation device 20 is provided with walls 27a and 27b on the left and right side surfaces of the filtering section 30 and a wall 27c on the rear surface. As a result, the cleaning liquid filtered by the filtering section 30 flows along the wall 27 through the gap 26 a to the water intake 28 . Then, the cleaning liquid flowing to the space 26b passes through the tunnel 29 and flows into the water intake 28. As shown in FIG. In other words, the pump P takes in the cleaning liquid from which the foreign matters and the like have been removed. Therefore, it is possible to prevent clogging of the pump P and the pipe line by foreign matters.

5 is a schematic diagram of the nozzle 40 shown in FIG. 2, and FIG. 6 is a sectional view of the nozzle shown in FIG.

The circulation device 20 has a nozzle 40 . The nozzle 40 is provided with a driving fluid port 41 connected to the pump P, a discharge port 43 for ejecting cleaning liquid, and a converging portion 44 between the driving fluid port 41 and the discharge port 43 .
When the cleaning liquid enters the drive fluid port 41 of the nozzle 40 , it flows toward the drive generator 46 . Here, since the drive generator 46 has a narrower diameter than the drive fluid port 41, the flow velocity of the cleaning liquid increases.
Further, the nozzle 40 is provided with a driving fluid port 41 and a converging portion 44 separated from each other, and a bridge 45 connects between them (suction fluid port 42). A space (intake fluid port 42 ) is provided by the bridge 45 so that cleaning fluid around the nozzle 40 can be taken in.
Further, the nozzle 40 converges from the driving fluid port 41 by a converging portion 44 in the middle of the discharge port 43 . The nozzle 40 converges the inside of the nozzle 40 tube by the converging portion 44 in the middle of discharging the washing liquid to the discharge port 43 after taking in the cleaning liquid around the nozzle at the fluid intake port 42 .

Here, the driving fluid port 41 of the nozzle 40 has a conical shape that narrows toward the flow generating portion 46 . The washing liquid flowing toward the flow generating portion 46 has a Venturi effect by throttling the flow of the fluid, and the flow velocity increases. Then, the pressure around it becomes low, and the cleaning liquid around the open intake fluid port 42 flows. Then, the cleaning liquid flowing in from the intake fluid port 42 is mixed with the cleaning liquid flowing out from the flow generation section 46 . Further, the mixed cleaning liquid is spouted from the discharge port 43 after the flow velocity is increased again by the converging portion 44 of the nozzle 40 . Therefore, the nozzle 40 can supply and discharge the cleaning liquid more than the pump P can discharge.

Further, the nozzle 40 has a duct 47 that communicates with a converging portion 44 that converges within the tube. One end of the duct 47 communicates with the converging portion 44, and the other end extends above the liquid surface.
Therefore, when the cleaning liquid flows into the converging section 44 from the flow generating section 46, the gas is taken into the converging section 44 from the duct 47, mixed with the cleaning liquid flowing through the nozzle 40, and discharged as a cleaning liquid containing air bubbles. can be done.
More specifically, in the nozzle 40, when the cleaning liquid flows into the converging portion 44 where the inside of the pipe narrows, the pressure around it is reduced. At this time, since the pressure in the converging portion 44 is lower than the pressure (atmospheric pressure) at the other end of the duct 47 , air is drawn into the converging portion 44 through the duct 47 . Thereby, air can be supplied from the duct 47 to the inside of the converging portion 44 . At this time, cavitation is likely to occur, the liquid and the gas are mixed, and a cleaning liquid containing air bubbles is generated.

Even if foreign substances such as leaves, wood chips, and insects are attached to the object to be washed, the cleaning liquid containing minute bubbles is ejected from the nozzle 40 by the cavitation phenomenon, so that the surface contamination of the object to be washed can be washed. Even if mud adheres to the object to be washed, the air bubbles collide with each other due to the momentum of the jet and break up, so that dirt and other dirt can also be washed. Furthermore, since the ejected cleaning liquid contains air bubbles, the cleaning object can be gently cleaned without damaging it.
In the present invention, the configuration has been described as taking in gas from the duct 47, but without being limited to this, for example, a configuration may be adopted in which a liquid such as a disinfectant solution is taken in to clean or disinfect the object to be cleaned.

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 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 . Then, the cleaning liquid becomes a driving liquid for the nozzle 40 and mixes with the cleaning liquid around the nozzle 40 and the gas sucked from the duct 47 . Therefore, the nozzle 40 ejects more cleaning liquid than the pump P can discharge from the discharge port 43 .
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 .

The cleaning liquid ejected to the first area 12 bounces off the walls of the cleaning bath 11 and becomes convection 51 (FIG. 1) and convection 52 (FIG. 2).
Since the cleaning liquid contains air bubbles due to the cavitation phenomenon of the nozzle 40 , the cleaning liquid gently cleans the object to be cleaned put into the first area 12 without damaging it.

The cleaning liquid in convection 51 and convection 52 flows through slit 22 of circulation device 20 into second area 13 . The cleaning liquid that has flowed into the second area 13 flows along the wall 27 between the spaces 26 a and 26 b after foreign substances are removed by the filtering unit 30 . The cleaning liquid that has flowed into the space 26 a flows into the intake port 28 . Further, the cleaning liquid that has flowed to the space 26b moves from the tunnel 29 to the space 26a, passes through the water intake port 28, and flows into the water intake pipe 24 connected to the pump P. As shown in FIG.

On the other hand, the cleaning liquid staying in the second area 13 is sucked into the intake fluid port 42 of the nozzle 40 and ejected from the discharge port 43 to the first area 12 .

As described above, 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 due to the configuration of the cleaning device 10 of the present invention.
In addition, the cleaning liquid in the first area 12 flows like a convection (flow path) 51 and a convection (flow path) 52 due to the force of jetting from the nozzle 40 of the circulation device 20 .
Further, the wall 27 of the circulation device 20 causes the cleaning liquid in the second area 13 to flow like convection 53 and convection 54 . As a result, the convection 53 sends the cleaning liquid from which the foreign substances have been removed to the pump. Therefore, the clogging of the pump P and the pipe line due to foreign matter is prevented. The convection 54 then flows into the intake fluid port 42 of the nozzle 40 and jets out from the discharge port 43 .

As described above, the amount of cleaning liquid ejected from the nozzle 40 is larger than the amount of cleaning liquid sent from the pump P to the driving fluid port 41 of the nozzle 40 . Therefore, the strength of suction into the fluid suction port 42 of the nozzle 40 and the strength of suction of the cleaning liquid by the pump P are such that the suction of the fluid suction port 42 of the nozzle 40 is stronger. In other words, without the wall 27, the cleaning liquid that has passed through the filtering section 30 is sucked into the suction fluid port 42 of the nozzle 40, making it difficult for the pump P to suck the cleaning liquid.
Therefore, a wall (plate) 27 is provided to generate a flow of convection (flow path) 53, so that the cleaning liquid that has passed through the filtering section 30 is sucked into the pump P. FIG. Further, the washing liquid is sucked into the suction fluid port 42 of the nozzle 40 by providing the wall 27 and generating the flow of the convection (flow path) 54 . This prevents the pump P from becoming difficult to suck the cleaning liquid.

The plate 21 of this configuration has been described as having a central 21a, left and right 21b, and 21b configuration, but without sticking to this, the plate 21 can be formed as a single plate, or the plate 21 can be tilted in a top view so that it can easily flow into the slit 22. etc.
Further, 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.
Although the number of nozzles 40 in this configuration is two, the number may be one or two or more.
In addition, the water intake pipe 24 connected to the pump P is configured to be connected through a hole in the wall of the cleaning tank 11, but the water intake pipe 24 may be connected by opening a hole in the wall of the cleaning tank 11, for example. Instead, the pipe may be laid over the wall.

As described above, the configuration of the present invention has been described based on the embodiments, but the present invention is not limited to the above-described embodiments and can be modified without departing from the gist thereof.

10 cleaning device 11 cleaning tank 12 first area 13 second area 14 bottom plate 15 drainboard 16 hook 17 rear plate 20 circulation device 21 plate (21a center, 21b left and right)
22 slit 23 nozzle hole 24 water intake pipe 25 supply pipe 26a, 26b interval 27a, 27b, 27c, 27d wall (plate)
28 Water intake port 29 Tunnel 30 Filtration unit 40 Nozzle 41 Drive fluid port 42 Suction fluid port 43 Discharge port 44 Convergence unit 45 Bridge 46 Flow generation unit 47 Ducts 51, 52, 53, 54 Convection (flow path)
P pump

Claims (4)

A circulation device for circulating the cleaning liquid in the 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 filtering unit that filters the cleaning liquid;
a nozzle for discharging the cleaning liquid,
the nozzle includes a drive fluid port, a suction fluid port, and a discharge port;
The plate is provided with a first hole for allowing the cleaning liquid to flow into the second area and a second hole for passing the cleaning liquid discharged from the nozzle,
A circulation device comprising a wall surrounding a part of the filtering section between the filtering section and the nozzle. the wall partitions the second area;
convection flowing to the pump;
Convection flowing to the inlet fluid port of the nozzle;
to form
2. The circulation device according to claim 1, characterized in that: The nozzle has a duct for taking in gas, and mixes the gas with the cleaning liquid ejected by the nozzle.
3. The circulation device according to claim 1 or 2, characterized in that: A circulation device according to any one of claims 1 to 3;
comprising the washing tank and a pump,
A bottom plate that inclines the bottom surface of the cleaning tank,
A cleaning device characterized by:

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