JP2020124658A - Cleaner - Google Patents

Abstract

To provide a cleaner of a returnable item which enables downsizing.SOLUTION: The present invention relates to a cleaner which cleans a returnable item 10 and includes: transport means 61 which transports a returnable item; cleaning means 71, 72 which jet cleaning water to the returnable item; a recovery tank 3 which recovers the cleaning water after use which has been jetted to the returnable item; a filter 32 which removes foreign objects from the cleaning water after the use; and a diaphragm pump 8 which is connected to the recovery tank, suctions the cleaning water from the recovery tank, and pumps the cleaning means. The diaphragm pump is disposed within an installation area of the cleaner and 70% or more of the cleaning water pumped from the diaphragm pump is made up of reused water which is jetted from the cleaning means and then recovered.SELECTED DRAWING: Figure 2

Description

The present invention relates to a cleaning device.

Returnable containers, pallets, etc. used for collection and delivery have dust, dirt, soot, hand stains, etc. adhering to them during the distribution process, etc. Also, since it is strongly adsorbed to the case together with other dust and dirt, it was very difficult to remove them. In addition, when a label with various information is attached, it is necessary to remove them as well, but it is very difficult to completely remove the label because the adhesive of the label hardens over time. It was

Conventionally, a stain or label that is difficult to remove as described above has been removed by a large-scale device using a high-pressure pump or a large-capacity pump (for example, Patent Document 1). As such a pump, for example, a plunger pump is used.

Japanese Patent No. 4201325

However, as described above, various stains are attached to returnable products. For example, in a high-pressure pump, if washed recovered water is used, the pump is likely to malfunction due to the stains contained in the recovered water. There is a problem. Therefore, a tank is installed outside the machine to filter the recovered water, and high-pressure water is sent from a high-pressure pump located outside the machine near the tank to the washing room for cleaning, which makes the device large and difficult to install. There were many In addition, even in large-capacity pumps, the pressure is lower than that of high-pressure pumps, but since a large amount of water is used, the pump becomes large and it is necessary to install the pump outside the machine. There were many

In addition, conventionally, since the pump is installed in a place away from the cleaning chamber, the distance from the pump to the cleaning nozzle becomes long, and the pressure loss increases, so the larger the distance, the larger the pump becomes, and the device It was upsized.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a cleaning device for returnable products, which can be downsized.

The present invention is a cleaning device for cleaning a returnable product, comprising a conveying means for conveying a returnable product, a cleaning means for spraying cleaning water on the returnable product, and a spraying device for the returnable product after use. A recovery tank for recovering the cleaning water, a filter for removing foreign matters from the cleaning water after use, a diaphragm pump connected to the recovery tank, sucking the cleaning water from the recovery tank, and pumping the cleaning water to the cleaning means. And the diaphragm pump is arranged in the installation area of the cleaning device, and 70% or more of the cleaning water pumped from the diaphragm pump is composed of reclaimed water recovered after being sprayed from the cleaning means. Has been done.

According to this configuration, since the cleaning water is collected and jetted using the diaphragm pump, there are the following advantages. In other words, the diaphragm pump can be made smaller than conventional plunger pumps, so it should be installed in the area where the cleaning device is installed, that is, in the vicinity of the recovery tank and cleaning means, which are the main components of the cleaning device. You can Therefore, it is possible to save the space of the entire apparatus.

In the above cleaning apparatus, the cleaning means may include a plurality of nozzles, and the plurality of nozzles may be at least one of a swing nozzle, a gas-liquid cleaning nozzle, and a rotary cleaning nozzle.

By using such a nozzle, even if the pressure of the diaphragm pump is lower than that of the plunger pump, it is possible to prevent the cleaning effect from decreasing.

The cleaning apparatus may further include a motor for driving the diaphragm pump, and the rotational force of the motor may be transmitted to the diaphragm pump by belt transmission.

Thereby, maintenance can be easily performed.

In the cleaning device, the cleaning water recovered in the recovery tank may further include an injection pipe for injecting steam, and a porous member arranged in the recovery tank, wherein the recovery tank includes: The cleaning water that has passed through the porous member may be sucked by the diaphragm pump.

According to this configuration, even if bubbles are generated in the cleaning water by heating with the steam, the bubbles can be eliminated before being sucked by the diaphragm pump. Therefore, the cleaning water sucked into the diaphragm pump contains almost no bubbles, and this can prevent the cleaning water containing bubbles from causing a problem in the diaphragm pump.

In the above cleaning apparatus, the opening into which the used cleaning water flows can be formed in the upper part of the recovery tank, and the filter can be arranged in the opening.

In the above-mentioned cleaning device, the length of the pipe connecting the diaphragm pump and the cleaning means can be within 5 m.

In the above cleaning device, the label attached to the returnable product may be removed.

In the above washing apparatus, the washing water may contain hypochlorous acid. Thereby, the returnable product can be sterilized.

According to the cleaning device of the present invention, the size can be reduced.

It is a perspective view which shows an example of the returnable goods used as the washing|cleaning target of the washing|cleaning apparatus which concerns on this invention. It is a side view which shows one Embodiment of the washing|cleaning apparatus which concerns on this invention. FIG. 3 is a view taken along the line AA of FIG. 2. It is the BB sectional view taken on the line of FIG. It is CC sectional view taken on the line of FIG. It is a top view of a recovery tank.

Hereinafter, an embodiment of a cleaning apparatus according to the present invention will be described with reference to the drawings.

<1. Returnable products>
First, a returnable product to be cleaned will be described with reference to FIG. As shown in FIG. 1, the returnable product 10 in the present embodiment is a resin molded product formed in a rectangular parallelepiped shape, and is a container having an opening 101 formed in an upper portion. The returnable product 10 accommodates products such as beverage packs. Since the returnable product 10 is repeatedly used to store products, it is cleaned by the cleaning device according to this embodiment. In this cleaning device, the returnable product 10 is transported with the opening 101 facing downward and the longitudinal direction thereof being the transport direction. Therefore, in the following, for convenience of description, in the longitudinal direction, the surface facing the conveying direction will be referred to as the front surface 102, the surface opposite thereto will be referred to as the rear surface 103, and the pair of surfaces facing the horizontal direction will be referred to as the side surfaces 104. Further, since the opening 101 faces downward, the bottom surface 105 faces upward during transportation, but the description will be given as it is as the bottom surface.

<2. Outline of cleaning equipment>
Next, the cleaning device will be described with reference to FIGS. 2 is a schematic side view of the cleaning device, FIG. 3 is a sectional view taken along the line AA of FIG. 2, FIG. 4 is a sectional view taken along the line BB of FIG. 3, and FIG. 5 is a sectional view taken along the line C-C of FIG. FIG. 6 is a plan view of the recovery tank.

As shown in FIG. 2, the cleaning apparatus according to the present embodiment includes a first cleaning chamber 1 and a second cleaning chamber 2 in which a returnable product 10 is cleaned, and a first cleaning chamber 1 and a first cleaning chamber 1 disposed below the cleaning chambers 1, 2. It is also provided with the second recovery tanks 3 and 4, and pumps 8 and 9 for injecting cleaning water. The returnable product 10 is transferred to the first cleaning chamber 1 by the first transfer device 51 arranged on the upstream side of the cleaning device, is subjected to high-pressure cleaning in the first cleaning chamber 1, and is then rinsed in the second cleaning chamber 2. Then, the sheet is conveyed by the second conveying device 52. Therefore, the first transfer device 51, the first cleaning chamber 1, the second cleaning chamber 2, and the second transfer device 52 are arranged in this order from the upstream side to the downstream side. Below the first cleaning chamber 1 and the second cleaning chamber 2, a pair of transport chains 61 extending in parallel over the two cleaning chambers 1 and 2 are arranged. It is transported continuously. Further, the first and second transfer devices 51 and 52 can be configured by various known conveyors. The returnable product 10 is received and delivered by the first transport device 51, the second device transport device 52, and the transport chain 61 continuously. Further, instead of disposing the first and second transfer devices 51 and 52, the transfer chain 61 may be extended in the front-rear direction.

<2-1. Outline of washing room>
As shown in FIG. 2, each of the transport chains 61 has a driven sprocket 62 arranged at the upstream end of the first cleaning chamber 1 and a drive sprocket arranged at the downstream end of the second cleaning chamber 2, respectively. It has been passed over to 63. Then, the drive sprocket 63 is rotationally driven by a motor (not shown), so that both the transport chains 61 move from the upstream side to the downstream side. At this time, the returnable product 10 is arranged so as to straddle both the transport chains 61. Therefore, the distance between the two transport chains 61 is smaller than the width of the returnable product 10 in the lateral direction. In addition, engaging protrusions (not shown) are formed at predetermined intervals on each of the transport chains 61, and the engaging protrusions engage with the rear end portion of the returnable product 10, whereby the returnable product 10 is placed on the downstream side. It is transported while being pushed to. Further, the engaging protrusion may be engaged with the inside of the front end portion of the returnable product 10 and conveyed. Alternatively, a plurality of transport rails may be arranged below the returnable product in parallel with each transport chain 61, and the returnable product may be slid on the transport rail and transported while being pushed by the engaging protrusions of the transport chain 61. .. That is, the transportation method can be appropriately determined according to the shape, orientation, front-back process, etc. of the returnable product 10, and is not particularly limited.

In addition, a pair of guide bars 64 are disposed above the transport chain 61 so as to sandwich the returnable product 10 from both sides, whereby the returnable product 10 is transported to the downstream side without being displaced in the horizontal direction. Further, the upper guide bar 65 is arranged above the returnable product 10 to be conveyed, whereby the returnable product 10 is not separated upward from the transfer route due to injection of cleaning water from the lower nozzle described later. Thus, the vertical position is regulated.

Next, the cleaning means of the first cleaning chamber 1 will be described. An upper nozzle 71 is provided in the upper part on the downstream side of the first cleaning chamber 1, and the cleaning water is sprayed from the upper nozzle 71 toward the obliquely downward side on the upstream side. That is, the upper nozzle 71 sprays the wash water mainly toward the front surface 102 and the bottom surface 105 (which faces upward) of the returnable product 10 conveyed from the upstream side to the downstream side.

Further, a lower nozzle 72 is provided in the lower portion on the upstream side of the first cleaning chamber 1, and the cleaning water is sprayed from the lower nozzle 72 toward the diagonally upper side on the downstream side. That is, the lower nozzle 72 mainly sprays the wash water toward the back surface 103 and the internal space (opening downward) of the returnable product 10.

Further, as shown in FIG. 4, two pairs of side nozzles 73 are provided on both sides of the first cleaning chamber 1 along the transport direction. Each side nozzle 73 is swingably supported by a shaft portion (not shown) whose axis is in the transport direction, and is ejected mainly toward the side surface 104 of the returnable product 10. Moreover, since each side nozzle 73 sprays the cleaning water while swinging in the vertical direction, the side surface 104 of the returnable product 10 can be uniformly cleaned in the vertical direction. Although the side nozzles 73 are swung in the vertical direction in the above description, the arrangement of the swing nozzles may be changed depending on which part of the retannable product 10 is the most dirty and which part is desired to be cleaned. For example, the upper nozzle 71 and the lower nozzle 72 may be swingably attached. Further, the upper nozzle 71, the lower nozzle 72, and the side nozzle 73 may be constituted by a gas/liquid cleaning nozzle or a rotary cleaning nozzle. Alternatively, a swing nozzle, a gas-liquid cleaning nozzle, and a rotary cleaning nozzle may be combined according to the site, and the arrangement of each cleaning nozzle is not limited. The configuration of the nozzle tip can be used by appropriately combining straight-moving nozzles, fan-shaped nozzles, etc. according to the distance between the object to be cleaned and the nozzles, the number of nozzles, and the conveying speed. The type and number of nozzles are particularly limited. Not done.

Subsequently, the cleaning means of the second cleaning chamber 2 will be described. As shown in FIGS. 2, 3 and 5, the second cleaning chamber 2 is provided with a plurality of nozzles 75 on both sides, above and below the transport path. More specifically, a total of 15 nozzles 75, three in the up-down direction and five in the transfer direction, are arranged on each side of the transfer path. Moreover, a total of 15 nozzles are arranged above and below the transport path, three nozzles in the horizontal direction and five nozzles in the transport direction. Therefore, in the second cleaning chamber 2, the entire surface of the returnable product 10 is cleaned with the cleaning water sprayed from the 60 nozzles 75 in total.

The cleaning water sprayed in each of the cleaning chambers 1 and 2 described above is used for cleaning the returnable product 10 and then flows into the first and second recovery tanks 3 and 4 below. Here, the first recovery tank 3 is arranged below the first cleaning chamber 1, and the second recovery tank 4 is arranged below the second cleaning chamber 2. Further, a supply plug 21 for supplying new water is provided above the second cleaning chamber 2, and the water flowing out from the supply plug 21 mainly flows into the second recovery tank 4. There is. In the present embodiment, as will be described later, the cleaning water flowing into the first recovery tank 3 is supplied by the diaphragm pump 8 to the nozzles 71 to 73 of the first cleaning chamber 1 and then flows into the second recovery tank 4. The cleaning water is supplied to each nozzle 75 of the second cleaning chamber 2 by the line pump 9. That is, the cleaning water used for cleaning is reused. At the same time, new water is supplied from the supply plug 21. At this time, 70% or more of the total amount of cleaning water ejected from all the nozzles is composed of cleaning water used for cleaning, that is, regenerated water, and new water supplied from the supply plug 21 is completely cleaned. It is adjusted to be 30% or less of water. Further, in each of the cleaning chambers 1 and 2, it is possible to inject from a nozzle directly connected to the supply plug 21. That is, it is not always necessary to use the reclaimed water as the cleaning water sprayed from each individual nozzle, and the amount of the reclaimed water may be adjusted with respect to the cleaning water used in the entire apparatus. The proportion of reclaimed water is preferably high for saving water, and more preferably 80% or more. However, if the proportion of reclaimed water is too high, dirt contained in the wash water may redeposit on the returnable product. Therefore, the rate of reclaimed water should be 87 to 97% in consideration of water saving and detergency. Is preferred.

<2-2. Overview of recovery tank>
Next, the recovery tank will be described. As shown in FIGS. 2 and 6, an opening 31 is formed on the downstream side on the upper surface of the first recovery tank 3, and a first filter 32 is arranged so as to close the opening 31. Further, an inclined surface extending downward toward the first filter 32 is formed on the upper surface of the first recovery tank 3. Therefore, the cleaning water sprayed from the first cleaning chamber 1 drops downward, flows on the upper surface of the first recovery tank 3, and flows into the internal space of the first recovery tank 3 via the first filter 32. Has become. The first filter 32 captures foreign substances such as labels and dust that are peeled off from the returnable product 10 by washing, and the wash water from which these foreign substances are removed flows into the internal space of the first recovery tank 3. The first filter 32 is preferably provided with at least one having a mesh size of about 20 to 100 mesh (opening of 0.15 to 0.9 mm). Since it will not fall into the air, the frequency of filter replacement may increase. On the other hand, if the openings are too large, the amount of stains contained in the wash water increases, and there is a possibility that the stains may be redeposited. Therefore, the standard and the number of filters may be appropriately determined according to the type and degree of contamination, and are not limited to those described above.

The second recovery tank 4 is similarly configured. That is, the opening 41 is formed on the upstream side of the upper surface of the second recovery tank 4, and the second filter 42 is arranged so as to close the opening 41. In addition, an inclined surface extending downward toward the second filter 42 is also formed on the upper surface of the second recovery tank 4. Therefore, the cleaning water sprayed from the second cleaning chamber 2 drops downward, flows on the upper surface of the second recovery tank 4, and flows into the internal space of the tank via the second filter 42. The second filter is also configured to capture the foreign matter, and the wash water from which the foreign matter is removed flows into the internal space of the second recovery tank 4.

As shown in FIG. 2, an injection pipe 33 for injecting water vapor is arranged in the lower portion inside the first recovery tank 3 so that the cleaning water recovered in the first recovery tank 3 is heated. Has become. Further, a discharge port 34 provided with a float valve is formed in the upper part of the first recovery tank 3. That is, the first recovery tank 3 is provided with a float valve for maintaining a water level lower than the partition position so that dirty cleaning water does not flow from the first recovery tank 3 into the second recovery tank 4. The water level of the first recovery tank 3 is adjusted to a predetermined height. When the cleaning water stored in the first recovery tank 3 exceeds the discharge port 34, it is discharged to the outside from the discharge port 34. Further, in the first recovery tank 3, a first discharge pipe 35 is provided in the lower portion on the upstream side, and the cleaning water is sucked into the diaphragm pump 8 via the first discharge pipe 35. There is.

Further, a perforated plate (perforated member) 36 extending in the up-down direction and having a large number of holes formed therein is arranged on the downstream side of the first discharge pipe 35. That is, the first recovery tank 3 is partitioned by the perforated plate 36 into an upstream side and a downstream side. Therefore, the cleaning water recovered in the first recovery tank 3 is adapted to be sucked into the diaphragm pump 8 via the first discharge pipe 35 after passing through the perforated plate 36. A large number of circular holes are formed in the perforated plate 36. Although the structure of the holes is not particularly limited, for example, the inner diameter is preferably 1 to 3 mm, and the pitch is preferably 1 to 5 mm.

Next, the second recovery tank 4 will be described. No discharge port is formed in the second recovery tank 4. More specifically, a partition extending between the first recovery tank 3 and the second recovery tank 4 to a position lower than the upper openings 31, 41 of the recovery tanks 3, 4 is provided. The cleaning water exceeding the above number overflows from the second recovery tank 4 and flows into the first recovery tank 3. Further, a second discharge pipe 43 is connected to a lower portion on the upstream side of the second recovery tank 4, and the cleaning water is sucked into the line pump 9 via the second discharge pipe 43. .. Further, the fresh water supplied from the above-mentioned supply plug 21 mainly flows into the second recovery tank 4. Therefore, the cleaning water recovered in the second recovery tank 4 has a smaller proportion of recycled water and less contamination than the cleaning water recovered in the first recovery tank 3. From this, the recycled water contained in the wash water supplied from the second recovery tank 4 may be 70% or less, but the total amount of the recycled water supplied from the first recovery tank 3 and the second recovery tank 4 in the present embodiment may be reduced. It is sufficient that 70% or more of the cleaning water, that is, the total amount of cleaning water sprayed from the nozzle is composed of regenerated water. If the amount of cleaning water used in this cleaning device per hour is 10,000 L, the amount of new water supplied from the supply plug 21 should be 3,000 L or less. ..

<2-3. Overview of pump>
As described above, the diaphragm pump 8 is connected to the first discharge pipe 35 connected to the first recovery tank 3. The diaphragm pump 8 is a known one and is driven by an adjacent motor 81. The motor 81 and the diaphragm pump 8 are connected by a belt 82, and the rotational force of the motor 81 is transmitted to the diaphragm pump 8 by belt transmission, and the diaphragm pump 8 is driven thereby. The cleaning water is sucked from the first recovery tank 3 by driving the diaphragm pump 8, and the sucked cleaning water is sprayed from the nozzles 71 to 73 of the first cleaning chamber 1. The diaphragm pump 8 is arranged in the vicinity of the first recovery tank 3 and the nozzles 71 to 73, and the pipe length from the diaphragm pump 8 to the nozzles 71 to 73 is particularly 5 m or less, preferably 3 m or less. Particularly preferably, it is arranged within 1 m. In the present embodiment, it is arranged on the upstream side of the first recovery tank 3 and below the first transfer device 51. The position where the diaphragm pump 8 is installed, that is, the range within 5 m from the first recovery tank 3 and the first cleaning chamber 1 (each nozzle 71 to 73), which are the main components of the cleaning device, is the cleaning device according to the present invention. Corresponding to the installation area of.

On the other hand, the line pump 9 is connected to the second discharge pipe 43 connected to the second recovery tank 4. The line pump 9 is of a known type and is driven by an adjacent motor (not shown). By driving the line pump 9, the cleaning water is sucked from the second recovery tank 4, and the sucked cleaning water is jetted from each nozzle 75 of the second cleaning chamber 2.

<3. Operation of cleaning equipment>
Next, the operation of the cleaning device configured as described above will be described. The returnable products 10, which are continuously conveyed by the first conveying device 51 at a predetermined interval, sequentially enter the first cleaning chamber 1. Then, in the first cleaning chamber 1, the outer surface and the inner surface of the returnable product 10 are cleaned under high pressure by the cleaning water sprayed from the nozzles 71 to 73. Then, the returnable product that has passed through the first cleaning chamber 1 is rinsed and cleaned in the second cleaning chamber 2 by the cleaning water sprayed from each nozzle 75. The returnable product 10 thus cleaned in the two cleaning chambers 1 and 2 is transferred by the second transfer device 52 and transferred to the next process through the drying process, or stored in a predetermined storage place or the like.

Then, the washing water used for washing flows downward. The cleaning water flowing out from the first cleaning chamber 1 is mainly collected in the first recovery tank 3. At this time, the wash water enters the inside of the first recovery tank 3 after the foreign matter is captured by the first filter 32. Then, since steam is supplied to the first recovery tank 3, it is heated by this steam. This improves the cleaning effect of the cleaning water. When the cleaning water drops into the first recovery tank 3 or when water vapor is supplied to the first recovery tank 3, bubbles tend to be generated in the cleaning water, but when the cleaning water passes through the porous plate 36, the diaphragm pump 8. Bubbles at a level that causes troubles in 8 and pipes almost disappear. Then, the suctioned cleaning water is sprayed from the nozzles 71 to 73 of the first cleaning chamber 1 to clean the returnable product 10.

On the other hand, the water flowing out from the second cleaning chamber 2 is mainly collected in the second recovery tank 4. At this time, the cleaning water enters the inside of the second recovery tank 4 after the foreign matter is captured by the second filter 42. Then, the cleaning water stored in the second recovery tank 4 is sucked into the line pump 9 through the second discharge pipe 43, and then sprayed from each nozzle 75 of the second cleaning chamber 2 to clean the returnable product 10. To do.

<4. Features>
As described above, according to this embodiment, the following effects can be obtained.
(1) Since the diaphragm pump 8 can be made smaller than the conventionally used plunger pump, it can be arranged in the installation area of the cleaning device, particularly in the vicinity of the first recovery tank 3. Therefore, it is possible to achieve space saving and size reduction of the entire device.

(2) The diaphragm pump 8 generally has a lower output than the plunger pump, but since the distance from the nozzles 71 to 73 can be shortened, the pressure loss can be reduced and the pressure from the nozzles 71 to 73 can be reduced. It is possible to prevent the injection pressure of the wash water from decreasing.

(3) The diaphragm pump 8 is easier to maintain than the plunger pump. As shown in FIG. 3, the motor 81 and the diaphragm pump 8 are arranged such that the motor 81 is arranged on the upstream side and the diaphragm pump 8 is arranged on the downstream side with respect to the conveying direction, and thus the maintainability is excellent. However, for maintainability, if the motor 81 and the diaphragm pump 8 are arranged side by side in the carrying direction, the diaphragm pump 8 may be arranged on the upstream side. That is, which one is arranged on the upstream side or the downstream side may be appropriately determined according to other configurations and is not particularly limited. Further, although the first recovery tank 3 is provided with the first filter 32, the maintenance becomes easier as compared with the plunger pump in which a plurality of filters are indispensable inside and outside the apparatus.

(4) Since the first recovery tank 3 is provided with the perforated plate 36, even if bubbles are generated in the cleaning water due to falling of the cleaning water or heating with steam, a large amount is generated before being sucked by the diaphragm pump 8. The bubbles can disappear. Therefore, the cleaning water sucked by the diaphragm pump 8 contains substantially no large bubbles, and this prevents the cleaning water containing bubbles from causing a problem in the diaphragm pump 8.

(5) A swing type side nozzle 73 is provided in the first cleaning chamber 1 to enhance the cleaning effect. Therefore, even if the pressure of the diaphragm pump 8 is lower than that of the plunger pump, it is possible to prevent the cleaning effect from decreasing.

<5. Modification>
Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention. The following modifications can be combined as appropriate.

<5-1>
In the above-described embodiment, the returnable product is washed using two washing chambers, but it is also possible to wash only the first washing chamber. In this case, the cleaning device can be configured by the first cleaning chamber 1, the nozzles 71 to 73, the first recovery tank 3, the diaphragm pump 8 and the like. Further, the supply plug 21 can be provided in the first cleaning chamber 1. In any case, the diaphragm pump 8 is arranged in the installation area of the cleaning device. When cleaning is performed only in the first cleaning chamber 1, the amount of reclaimed water is adjusted to 70% or more of the total amount of cleaning water sprayed in the first cleaning chamber 1.

<5-2>
The number, arrangement, and mode of the nozzles are not particularly limited, but in order to enhance the cleaning effect in the first cleaning chamber 1, in addition to the swing type nozzle 73 described above, a gas-liquid cleaning nozzle, a rotary nozzle, or the like may be used. Can be used. The gas-liquid cleaning nozzle is a known nozzle that forms a mixed flow of gas and liquid and jets the mixed flow onto a cleaning surface via the cleaning nozzle. Further, in the rotary nozzle, cleaning water is sprayed from a plurality of nozzles provided along the circumferential direction of the outer peripheral surface of a predetermined shaft member. At this time, the shaft member rotates around the shaft by a motor or the like. Moreover, you may use the rotary type cleaning nozzle which the tip of a nozzle rotates by water flow. By using such a nozzle having high cleaning performance, the cleaning effect can be enhanced even when the pressure is slightly lower than that of the plunger pump. Similarly, the nozzle provided in the second cleaning chamber 2 is not particularly limited.

<5-3>
The transfer means in the cleaning device may be other than the above-mentioned transfer chain, and is not particularly limited as long as it can transfer the returnable product and can drop the cleaning water downward.

<5-4>
The configurations of the recovery tanks 3 and 4 are not particularly limited. It is sufficient that at least the cleaning water is collected and the cleaning water can be sucked by the pumps 8 and 9. Further, the form and position of the filters 32 and 42 are not particularly limited as long as the cleaning water is configured to be able to capture foreign matter before entering the pumps 8 and 9. The form of the perforated plate 36 is not particularly limited, and may be any form other than the plate form as long as bubbles can be eliminated. Further, if there is no mechanism for heating the wash water such as spraying water vapor, the perforated plate 36 may not be provided.

<5-5>
The position of the supply plug 21 is not particularly limited as long as new water can be added to the wash water.

<5-6>
As the diaphragm pump 8, a known pump can be appropriately used. By using a multi-diaphragm pump composed of a plurality of pistons in order to suppress the pulsation of the pump, the cleaning effect can be further enhanced. Specifically, a multi-diaphragm pump composed of three or more pistons is preferable, and it is particularly preferable to use a multi-diaphragm pump composed of five or more pistons. Further, the power transmission from the motor 81 is preferably a belt transmission from the viewpoint of maintenance, but is not limited to this.

<5-7>
The form of the returnable product 10 is not particularly limited, and in addition to the above-mentioned containers, various products that are repeatedly used and require cleaning, such as pallets, can be the cleaning target of the present invention.

<5-8>
As the washing water, water containing various chemicals can be used in addition to water. For example, cleaning water containing hypochlorous acid can be supplied from the supply plug 21. Thereby, the returnable product 10 can be sterilized. Further, since the cleaning device according to the present invention can reduce the number of filters as compared with the conventional cleaning device using the plunger pump, the cleaning water is easily contaminated. Therefore, sludge easily adheres to the inside of the pumps 8 and 9 and the pipes. On the other hand, when cleaning water containing hypochlorous acid is supplied, sludge is less likely to be deposited (adhered) inside the pumps 8 and 9 and pipes, and troubles due to sludge can be reduced. Further, a chemical such as hypochlorous acid can be directly sprayed to the returnable product 10 in at least one of the cleaning chambers 1 and 2 by using a separate pipe and nozzle, which can enhance the sterilization effect.

10 Returnable products 3 1st recovery tank (recovery tank)
32 1st filter (filter)
33 injection pipe 36 perforated plate (perforated member)
61 Transport chain (transportation means)
71 Upper nozzle (cleaning means)
72 Lower nozzle (cleaning means)
73 Side nozzle (Swing type nozzle)
8 diaphragm pump

Claims (8)

A cleaning device for cleaning returnable products,
A transport means for transporting returnable products,
Cleaning means for spraying cleaning water on the returnable product,
A collection tank for collecting the wash water after use, after being sprayed on the returnable product,
A filter for removing foreign matter from the wash water after use,
A diaphragm pump connected to the recovery tank, sucking cleaning water from the recovery tank, and sending the cleaning water by pressure to the cleaning means,
Equipped with
The diaphragm pump is arranged in the installation area of the cleaning device,
A cleaning device in which 70% or more of the cleaning water pumped from the diaphragm pump is composed of reclaimed water that is recovered after being sprayed from the cleaning means. The cleaning means includes a plurality of nozzles,
The cleaning device according to claim 1, wherein the plurality of nozzles are at least one of a swing nozzle, a gas-liquid cleaning nozzle, and a rotary cleaning nozzle. Further comprising a motor for driving the diaphragm pump,
The cleaning device according to claim 1, wherein the rotational force of the motor is transmitted to the diaphragm pump by belt transmission. An injection pipe for injecting steam into the cleaning water recovered in the recovery tank,
A porous member arranged in the recovery tank,
Further equipped with,
The cleaning device according to any one of claims 1 to 3, wherein in the recovery tank, the cleaning water that has passed through the porous member is configured to be sucked by the diaphragm pump. On the upper part of the recovery tank, the opening through which the washing water after use flows is formed,
The cleaning device according to claim 1, wherein the filter is arranged in the opening. The cleaning device according to claim 1, wherein a length of a pipe connecting the diaphragm pump and the cleaning means is within 5 m. The cleaning device according to claim 1, wherein the label attached to the returnable product is configured to be removed. The cleaning device according to any one of claims 1 to 7, wherein the cleaning water contains hypochlorous acid.