Cleaning equipment

Abstract

To provide a washing device capable of easily and appropriately recovering garbage washed away from an object to be washed.SOLUTION: A washing device 1 includes a first washing part 11 for washing an object P to be washed with washing water and a recovery part 30 disposed at the first washing part 11. The recovery part 30 includes a filter 31 for recovering garbage washed away from the object to be washed by washing, which includes a through-hole 33 through which the washing water can pass. The filter 31 is provided with a groove part 34 recessed downward in a vertical direction in an installation posture of the washing device 1, in a portion of the filter 31. A groove bottom 35 of the groove part 34 is provided with a suction port 36 for sucking garbage.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a washing apparatus including a washing section that washes an object to be washed with washing water, and a recovery section that is provided in the washing section. [Background technology]

[0002] Conventionally, washing devices have been proposed that wash tableware such as plates and trays and cooking utensils such as hotel pans (hereinafter collectively referred to as "objects to be washed") while transporting them. For example, one conventional washing device arranges objects to be washed after being used for cooking, etc., in a line on a conveyor extending in the transport direction, and washes the objects by spraying washing water or steam toward the objects while continuously transporting them together with the conveyor (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2017-80160 Summary of the Invention [Problem to be solved by the invention]

[0004] In some conventional washing devices, the wash water used in the washing section is circulated and reused as wash water. For this reason, conventional washing devices are equipped with a filter (such as a strainer) to remove debris such as leftover food washed off the items from the wash water used for washing. The filter generally has perforations such as punch holes, and functions like a sieve, allowing the wash water to pass through the perforations and collecting debris on the filter.

[0005] However, in conventional washing devices, when the food scraps and other debris washed off the objects are small pieces such as ground sesame or hijiki seaweed, if the opening area of ​​the through-holes is increased to prioritize good circulation of the washing water, the debris passes through the through-holes and is not properly removed. Furthermore, if the opening area of ​​the through-holes is reduced to the extent that ground sesame or hijiki seaweed cannot pass through, clogging easily occurs, causing the washing water to overflow without returning to the washing tank, preventing proper circulation. In other words, conventional washing devices have room for improvement in terms of maintaining proper circulation of the washing water, collecting food scraps and other debris washed off the objects, and the accuracy of the garbage collection.

[0006] The present invention has been made in consideration of the above-mentioned circumstances, and its object is to provide a cleaning device that can easily and properly collect dirt washed away from an object to be cleaned. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, the cleaning device according to the present invention is characterized by the following [1] to [6]. [1] A cleaning device comprising a cleaning unit that cleans an object to be cleaned with cleaning water and a recovery unit provided in the cleaning unit, The recovery unit includes: Collecting the dirt washed away from the object by the cleaning; a filter having through holes through which the cleaning water can pass; The filter is a groove recessed downward in the vertical direction in an installation posture of the cleaning device is provided in a part of the filter; A suction port for sucking the dust is provided at the bottom of the groove portion. It is a cleaning device. [2] In the cleaning device described in [1] above, The cleaning unit includes: The cleaning device further includes a cleaning tank capable of collecting and storing the cleaning water that has passed through the through-holes, The suction port is The cleaning device is disposed so as to be submerged in the cleaning water stored in the cleaning tank. It is a cleaning device. [3] In the cleaning device according to the above [1] or [2], The groove portion is a bottom surface of the groove bottom formed of a plate-like member that does not allow the cleaning water to pass through; The suction port is provided on the bottom surface. It is a cleaning device. [4] In the cleaning device according to any one of [1] to [3] above, The recovery unit includes: a collection basket that collects the dust sucked through the suction port; and a discharge mechanism that sucks the dust into the collection basket. It is a cleaning device. [5] In the cleaning device according to any one of [1] to [4] above, The filter is The groove has a mesh structure at other locations except for the bottom surface thereof. It is a cleaning device. [6] In the cleaning device according to any one of [1] to [5] above, The object to be cleaned is cleaned in the plurality of cleaning units while being conveyed in a conveying direction, The recovery unit includes: The cleaning unit is provided in the first cleaning unit among the plurality of cleaning units. It is a cleaning device.

[0008] According to the washing device having the configuration [1] above, the recovery section recovers debris (such as food scraps) washed away from the object during washing by the washing section, and has a filter with through-holes through which the wash water can pass. A groove recessed vertically downward when the washing device is installed is provided in part of the filter. This allows two types of flow of wash water to occur: one that passes through the through-holes in areas of the filter other than the grooves, and another that flows toward the grooves on the filter plane without passing through the through-holes. The flow of wash water toward the grooves serves to transport (collect) debris washed away from the object from areas of the filter other than the grooves. The debris collected in the grooves is sucked into the grooves through a suction port provided at the bottom of the grooves. As a result, the washing device of this configuration can easily and appropriately recover debris on the filter and maintain smooth circulation without overflowing of wash water due to clogging of the filter.

[0009] According to the cleaning device having the configuration of [2] above, the suction port is positioned so as to be submerged in the cleaning water stored in a cleaning tank that can collect and store the cleaning water that has passed through the through-holes of the collection unit. As a result, the cleaning device of this configuration smoothly discharges the cleaning water that flows into the grooves and the dirt that has collected in the grooves from the suction port while mixing it with the cleaning water in the grooves, making it less likely that dirt will remain in the grooves.

[0010] According to the cleaning device having the configuration [3] above, the bottom surface of the groove where the suction port is provided is made of a plate-like member that does not allow cleaning water to pass through. This allows the cleaning device of this configuration to reliably direct dirt collected in the groove toward the suction port. In other words, with the above configuration, the cleaning device of this configuration can suck up dirt collected in the groove through the suction port without it remaining in the groove.

[0011] The cleaning device configured as [4] above is equipped with a collection basket that collects the dirt sucked through the suction port. For example, if the collection basket is placed outside the housing of the cleaning device, it becomes easier to dispose of the collected dirt. Furthermore, the cleaning device of this configuration is equipped with a discharge mechanism that discharges the dirt into the collection basket. For example, if a device that generates negative pressure is used as the discharge mechanism, negative pressure can be generated using the water flow and water pressure of the cleaning water passing through the piping, without providing a pump dedicated to discharge (see Figure 2). In this way, the cleaning device of this configuration can collect dirt easily and efficiently.

[0012] According to the cleaning device of the configuration [5] above, the filter has a mesh structure defining through-holes in areas other than the bottom surface of the grooves. However, if the cleaning device does not have a mesh structure (i.e., has through-holes like punch holes), small particles of debris washed away from the object being cleaned, such as ground sesame or hijiki seaweed, will pass through the through-holes because the opening area of ​​the through-holes is larger than the size of the debris, preventing proper removal. On the other hand, if the cleaning device simply has a mesh structure, it can capture the fine (small) debris described above, but there is a risk of the debris clogging the through-holes. However, in the cleaning device of this configuration, as described above, grooves are provided in the filter, which generates a flow of cleaning water toward the grooves, allowing the fine debris to mix with the flow of cleaning water toward the grooves. This allows the cleaning device of this configuration to easily collect debris without clogging the through-holes.

[0013] According to the washing apparatus having the configuration [6] above, the object to be washed is washed in multiple washing units while being transported in the conveying direction. The recovery unit is provided in the first washing unit of the multiple washing units. In the conventional washing apparatus described above, the washing water used in washing is recovered and circulated for reuse. In such conventional washing apparatuses, if debris is mixed in the recovered washing water, the debris-mixed washing water will be used in subsequent washings, which may result in the washing apparatus not achieving the expected effect. However, the washing apparatus of the present configuration can properly recover debris in the first washing stage, thereby preventing contamination of not only the first stage but also the subsequent washing water (e.g., contamination of the washing water by debris), and ultimately contamination of the washing tank (e.g., contamination of the washing tank by debris). The first washing unit refers to the washing unit located most upstream in the conveying direction. [Effects of the Invention]

[0014] Thus, according to the present invention, a washing device can be provided that can easily and properly collect dirt washed away from the object to be washed.

[0015] The present invention has been briefly described above. The details of the present invention will become clearer by reading the following detailed description of the invention (hereinafter referred to as "embodiments") with reference to the accompanying drawings. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 1 is a schematic side view showing the internal structure of a cleaning device according to an embodiment of the present invention. [Figure 2] FIG. 2 is a schematic enlarged view of the first cleaning unit shown in FIG. [Figure 3] FIG. 3 is a schematic plan view of the first cleaning unit shown in FIG. [Figure 4] FIG. 4 is a schematic cross-sectional view of the first cleaning unit shown in FIG. [Figure 5] FIG. 5 is a perspective view of the filter shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0017] <Embodiment> A cleaning device 1 according to an embodiment of the present invention will be described below with reference to the drawings. As shown in Fig. 1, the cleaning device 1 is a device that cleans an object P with cleaning water while transporting the object P on a conveyor 20 (transport unit).

[0018] <Overall configuration of cleaning device 1> The washing apparatus 1 is equipped with a first washing section 11 that roughly washes the object P, a second washing section 12 that washes the object P washed in the first washing section 11, and a third washing section 13 that rinses the object P washed in the second washing section 12. The first washing section 11, the second washing section 12, and the third washing section 13 are arranged in this order from the entrance 2 of the washing apparatus 1 along the conveying direction (see arrow Y1 in FIG. 1) in which the object P is conveyed by the conveyor 20. The object P to be washed by the washing apparatus 1 may be tableware such as plates and trays, or cooking utensils such as hotel pans.

[0019] The conveyor 20 is a device that transports the object P to be cleaned from the entrance 2 of the cleaning device 1, where the object P is brought in, towards the exit 3, where the object P is taken out. The cleaning device 1 is formed with a transport path 4 that cleans the object P that is put in through the entrance 2 provided in the outer wall of the housing (not shown) of the cleaning device 1, and transports the cleaned object P until it is discharged from the exit 3 provided in the outer wall of the housing of the cleaning device 1. The transport path 4 is a path that passes the object P to be cleaned continuously from the first cleaning section 11 to the third cleaning section 13 described above.

[0020] The conveyor 20 includes a chain belt 21 that moves from the entrance 2 to the exit 3 of the cleaning device 1 (specifically, the conveying passage 4) while placing the object to be cleaned P thereon, and a driven roller 22 around which the chain belt 21 is wound, and a drive roller 23. The drive roller 23 is connected to a drive motor (not shown) via a drive belt (not shown).

[0021] With this configuration, when the drive motor is driven, the drive roller 23 rotates via the drive belt, and the chain belt 21 wound around the drive roller 23 moves through the conveying passage 4 while rotating the driven roller 22. This allows the items P to be conveyed on the chain belt 21 through the conveying passage 4 from the first washing section 11 to the third washing section 13. The items P may also be washed using a dish basket.

[0022] The first washing section 11 is a section that roughly washes the object P to be washed, which is transported by the conveyor 20 from the entrance 2 of the washing device 1, in order to wash away with washing water any garbage R, such as leftover food, adhering to the object P. The first washing section 11 is equipped with a washing nozzle 61 that sprays washing water onto the object P to be washed, which is transported by the conveyor 20.

[0023] In this embodiment, the cleaning device 1 is provided with one first cleaning section 11, but a plurality of first cleaning sections 11 may be provided along the conveying direction of the conveyor 20.

[0024] The cleaning nozzle 61 may be composed of, for example, an upper cleaning nozzle and a lower cleaning nozzle that spray cleaning water from above and below the object P. In this case, the upper cleaning nozzle is disposed above the transport area in which the object P is transported, and is arranged so as to spray cleaning water downward toward the object P. On the other hand, the lower cleaning nozzle is disposed below the transport area in which the object P moves, and is arranged so as to spray cleaning water upward toward the object P. In this embodiment, cleaning water is sprayed in a curtain shape from the nozzle (not shown) of the cleaning nozzle 61.

[0025] The first cleaning section 11 further includes a cleaning tank 38 that collects the cleaning water discharged from the cleaning nozzle 61 and stores the collected cleaning water. In the cleaning device 1 according to this embodiment, the first cleaning section 11 is provided with a collection section 30 that collects the cleaning water discharged from the cleaning nozzle 61 and the dirt R washed away from the object P. The collection section 30 includes a filter 31 below the cleaning nozzle 61 that collects the dirt R washed away from the object P.

[0026] When supplying cleaning water (water) to the cleaning tank 38 at the start of cleaning, the cleaning water (water) may be supplied to the first cleaning section 11, for example, from the cleaning tank 47 of the third cleaning section 13 described below via the cleaning tank 47 of the second cleaning section 12, or clean water may be supplied to each cleaning tank 47.

[0027] In this embodiment, the first cleaning section 11 is equipped with a suction-type device for collecting the dirt R, as described below. Specifically, as shown in Figures 1 to 2 and 4, a filter 31 (so-called strainer) is disposed between the cleaning nozzle 61 and the cleaning tank 38. The filter 31 is attached to the cleaning tank 38 so as to close the upper opening of the cleaning tank 38.

[0028] As shown in Fig. 5, the filter 31 has a groove 34 in which part of the flat body 32 is recessed downward. The groove 34 has a bottom surface 35a made of a plate-like member at the groove bottom 35. The bottom surface 35a of the groove bottom 35 is provided with a suction port 36 that sucks in dirt R washed away from the object P to be cleaned. The suction port 36 is positioned so as to be submerged in the cleaning water stored in the cleaning tank 38. In other words, the groove 34 is submerged in the cleaning water.

[0029] As shown in FIG. 4 , the water level WS of the cleaning water in the groove 34 is equal to the water level WS of the cleaning tank 38. The water level WS in the groove 34 is preferably set to a height that allows the discharge mechanism 42 to generate negative pressure and suck the debris R through the suction port 36, as described below. For example, if the water level WS is too high, the debris R collected in the groove 34 will spread and stagnate or float to positions away from the suction port 36 (positions beyond the reach of suction force), making it difficult to properly collect the debris R. Conversely, if the water level WS is too low, the cleaning water around the suction port 36 may be sucked up, making it difficult to stably (continuously) apply the negative pressure generated by the discharge mechanism 42 to the suction port 36. This makes it difficult to stably (continuously) suck the debris R through the suction port 36. For this reason, the water level WS in the groove 34 is appropriately set so that the debris R can be sucked in.

[0030] Furthermore, the filter 31 has an inclined surface 37 formed to connect the surface of the main body 32 and the bottom surface 35a. The inclined surface 37 is an inner wall surface of the groove 34, and is inclined downward from the main body 32 toward the groove bottom 35.

[0031] The filter 31 has a mesh structure (i.e., a mesh formed by weaving a plurality of metal wires) except for the bottom surface 35a, and the mesh structure defines through-holes 33 through which cleaning water can pass. Specifically, the mesh portions of the mesh structure function as the through-holes 33. The size of the opening area of ​​the through-holes 33 is determined by the size of the mesh. The mesh size is preferably 20 to 50 wires per inch, and further preferably the wire diameter is 0.18 to 0.5 mm. However, the size of the mesh (i.e., the opening area of ​​the through-holes 33) is not limited to this, as long as it is large enough to prevent fine debris R (i.e., food scraps) such as ground sesame seeds and hijiki seaweed from passing through the through-holes 33.

[0032] The bottom surface 35a of the groove bottom 35 is made of a plate-like member that does not allow cleaning water to pass through. In other words, as described above, the filter 31 does not have a mesh structure (i.e., through-holes 33) on the bottom surface 35a. This makes it easier to collect the dirt R washed away from the object P to be cleaned into the suction port 36 when collecting the dirt R, which will be described later. Note that the plate-like member is not limited to a flat surface.

[0033] In this embodiment, the cleaning tank 38 of the first cleaning section 11 may be provided with a heating device that heats the cleaning water to a certain set temperature.

[0034] Furthermore, in this embodiment, the first cleaning section 11 is equipped with a pressure pump 41 that pressure-feeds the cleaning water stored in the cleaning tank 38 to the cleaning nozzle 61. As a result, in the first cleaning section 11, the cleaning water is sprayed onto the object to be cleaned P, and the sprayed cleaning water is collected in the cleaning tank 38, and the collected cleaning water can be sprayed again onto the object to be cleaned P, allowing the cleaning water to be reused.

[0035] Furthermore, the recovery unit 30 is provided with a discharge mechanism 42 that generates negative pressure, a suction pipe 43 that sucks up the debris R collected in the groove portion 34, and a discharge pipe 44 that is arranged between and connected to a pipe 48 downstream of the pressure pump 41 and the discharge mechanism 42. The suction pipe 43 is arranged between the filter 31 and the discharge mechanism 42 and is connected to both. A method for generating negative pressure will be described later.

[0036] Furthermore, the collection unit 30 is provided with a collection basket 39a outside the housing (not shown) of the cleaning device 1, which collects the dirt R sucked through the suction port 36. The collection basket 39a has a mesh structure (through holes 33) similar to that of the filter 31, and the dirt R sucked through the filter 31 is discharged (discharged) together with cleaning water via a discharge mechanism 42. As shown in FIG. 2, the collection basket 39a is housed in a dirt collection tank 39 that stores cleaning water. In this embodiment, the dirt collection tank 39 is arranged outside the housing of the cleaning device 1, similar to the collection basket 39a.

[0037] Furthermore, the collection unit 30 is provided with an electrode-type or float-type detector 39b that detects the collected waste R. The detector 39b is arranged so as to hang downward from the inner surface of a lid 39c provided on the collection unit 30 toward the inside of the collection basket 39a. The detector 39b can detect a rise in the water level in the collection basket 39a or the accumulation of waste R at a predetermined height, and can be controlled to notify the replacement of the collection basket 39a before the waste R accumulates in the collection basket 39a and overflows. At this time, the pressure pump 41 of the first cleaning unit 11 is controlled to stop, thereby making the replacement of the collection basket 39a safer.

[0038] Furthermore, the collection unit 30 is provided with a discharge pipe 46 that discharges the sucked debris R into the collection basket 39a, and a return pipe 45 that sends the cleaning water stored in the debris collection tank 39 to the cleaning tank 38. The discharge pipe 46 is disposed between the collection basket 39a and the discharge mechanism 42, and the return pipe 45 is disposed between the cleaning tank 38 and the debris collection tank 39.

[0039] The second cleaning section 12 is a section that cleans the object P, which has been transported from the first cleaning section 11 by the conveyor 20, in order to wash away dirt adhering to the object P with cleaning water. Similar to the first cleaning section 11, the second cleaning section 12 is equipped with cleaning nozzles 61 that spray cleaning water onto the object P transported by the conveyor 20. These components are the same as those of the first cleaning section 11, so detailed explanations thereof will be omitted.

[0040] The second cleaning section 12 is provided with a cleaning tank 47 below the cleaning nozzle 61, which collects the cleaning water discharged from the cleaning nozzle 61 and stores the collected cleaning water. When supplying cleaning water (water) to the cleaning tank 47 at the start of cleaning, for example, cleaning water (water) may be supplied from the cleaning tank 47 of the third cleaning section 13, which will be described later, to the cleaning tank 47 of the second cleaning section 12, or tap water may be supplied to the cleaning tank 47 of the third cleaning section 13.

[0041] The washing tank 47 is provided with a plurality of detergent supply devices (not shown) that supply detergent to the stored washing water, and a heating device (not shown) that heats the stored washing water by electricity, steam, etc. The number of detergent supply devices provided in the washing tank 47 is at least the number corresponding to the types of detergent and bleach used.

[0042] Furthermore, the cleaning tank 47 may be provided with a temperature measuring device (not shown) that measures the temperature of the cleaning water stored therein, and a concentration measuring device (not shown) that measures the concentration of the detergent contained in the cleaning water stored therein. Furthermore, a control device (control unit) that controls the temperature of the cleaning water using these devices and the concentration of the detergent contained in the cleaning water may be provided. Furthermore, in this embodiment, the cleaning apparatus 1 is provided with one second cleaning section 12, but multiple second cleaning sections 12 may be provided along the conveying direction of the conveyor 20.

[0043] Furthermore, in this embodiment, the second cleaning section 12 is provided with a pressure pump 41 that pressure-feeds the cleaning water stored in the cleaning tank 47 to the cleaning nozzle 61. This allows the cleaning water to which detergent has been added to be sprayed onto the object P to be cleaned, and the sprayed cleaning water is collected in the cleaning tank 47, and the collected cleaning water can be sprayed onto the object P to be cleaned that is transported sequentially by the conveyor 20. In this embodiment, the pressure pump 41 is provided in the second cleaning section 12, and the pressure pump 41 and the cleaning nozzle 61 are connected via a connecting pipe so as to pressure-feed the cleaning water to the cleaning nozzle 61.

[0044] The third washing section 13 is a section that rinses the washed object P after detergent washing, transported by the conveyor 20 from the second washing section 12, to wash away detergent and other substances adhering to the washed object P with rinsing water. Furthermore, the third washing section 13 is also a section that finishes washing the washed object P to wash away the washing water adhering to the washed object P after rinsing with cleaning water, which is tap water.

[0045] The third cleaning section 13 is provided with a cleaning tank 47 below the cleaning nozzle 61, which collects the cleaning water discharged from the cleaning nozzle 61 and stores the collected cleaning water. Furthermore, the third cleaning section 13 is provided with a pressure pump 41 which pressure-feeds the cleaning water stored in the cleaning tank 47 to the cleaning nozzle 61. The cleaning water collected in the cleaning tank 47 is reused.

[0046] The cleaning tank 47 of the third cleaning section 13 is provided with a heating device (not shown) that heats the stored cleaning water and a temperature measuring device (not shown) that measures the temperature of the stored cleaning water. A control device (control unit) that controls the temperature of the cleaning water using these devices may also be provided. Furthermore, in this embodiment, the cleaning apparatus 1 is provided with one third cleaning section 13, but multiple third cleaning sections 13 may be provided along the conveying direction of the conveyor 20.

[0047] <Waste R collection method for cleaning device 1> In this embodiment, multiple stages of cleaning are performed while the object P is transported in the transport direction. Here, the collection of dirt R in the first cleaning section 11, which performs the first stage of cleaning, will be described. As shown in Fig. 4, cleaning water sprayed in a curtain shape from the cleaning nozzle 61 toward the object P is sprayed onto the object P and then flows down toward the collection section 30 (see arrow Y6 in Fig. 4).

[0048] The cleaning water that flows down toward the collection section 30 generates two types of flows: one that passes through the through-holes 33 of the filter 31 toward the cleaning tank 38 (see arrow Y8 in FIG. 4), and the other that passes over the main body section 32 toward the groove section 34 (see arrow Y4 in FIG. 4). The cleaning water that flows down toward the collection section 30 is mixed with garbage R, such as leftover food that has been washed away from the objects P. In other words, since the filter 31 has a mesh structure in all areas except the bottom surface 35a (i.e., it is configured so that fine garbage R, such as ground sesame seeds and hijiki seaweed, does not pass through the through-holes 33), the garbage R is collected from the main body section 32 into the groove section 34 by the flow of cleaning water toward the groove section 34.

[0049] Here, the wash water flowing over the main body 32 may spread out and flow out of the collection section 30. For this reason, the collection section 30 is provided with a guide section 50, as shown in Figure 3. The guide section 50 is integrally formed with a support section 51 that extends from the upstream side to the downstream side of the wash water flowing over the main body 32 (in the vertical direction on the page), and fins 52 that guide the wash water flowing over the main body 32 into the grooves 34. As a result, even if the wash water flows out of the collection section 30, the guide section 50 guides it onto the main body 32, and in particular towards the grooves 34 (see arrow Y4 in Figure 3).

[0050] As described above, even if the cleaning water contains the dirt R washed away from the object P, the recovery unit 30 Filter 31 The waste R is collected by the washing tank 38, the waste R is separated from the washing water, and the washing water from which the waste R has been separated is collected and stored in the washing tank 38.

[0051] The waste R collected in the groove 34 is sucked through the suction port 36 by generating negative pressure from the discharge mechanism 42. Specifically, cleaning water is pumped from the pressure pump 41 toward the discharge piping 44. When the cleaning water reaches the discharge mechanism 42, the discharge mechanism 42 generates negative pressure in the suction pipe 43 by utilizing the flow of cleaning water pumped from the pressure pump 41. As shown in FIG. 2, the opening at the end of the discharge piping 44 on the discharge mechanism 42 side is narrowed. This is to generate a stronger negative pressure by increasing the flow rate and reducing the pressure (Bernoulli's principle). When negative pressure is generated in this manner, the cleaning water and the waste R that have flooded the groove 34 are simultaneously sucked in. The sucked cleaning water and the waste R merge with the cleaning water pumped from the pressure pump 41 in the discharge pipe 46 and are discharged into the collection basket 39a (see arrow Y2 in FIG. 2). In this manner, in this embodiment, the waste R is collected.

[0052] Furthermore, in this embodiment, the collection basket 39a is configured to be removable from the waste collection tank 39. That is, by removing the collection basket 39a from the waste collection tank 39, the collected waste R can be easily disposed of. When disposing of the waste R, the discharge of cleaning water and waste R from the discharge pipe 46 to the collection basket 39a can be stopped by closing the valve 46a provided in the discharge pipe 46. In this manner, the collected waste R is disposed of in this embodiment.

[0053] Incidentally, because wash water is discharged into the waste collection tank 39 (collection basket 39a) at the same time as the waste R, wash water is stored as the waste R is collected. At this time, if the collected waste R is rice, hijiki seaweed, or the like, it will be sufficiently larger than the mesh size and will settle inside the collection basket 39a, so the pile height will gradually increase from the bottom as it settles and accumulates. When the pile height becomes sufficiently high, the amount of wash water passing through the mesh from collection basket 39a will decrease, and the increased water level inside collection basket 39a, or the accumulated rice or hijiki seaweed itself, will be detected by detection unit 39b, and the operator will replace collection basket 39a.

[0054] On the other hand, fine debris such as ground sesame seeds drifts turbulently throughout the collection basket 39a due to the water flowing in from the discharge pipe 46 and out to the return pipe 45, and accumulates in various forms, such as floating and piling up, or sticking to the mesh surface. As the amount of debris accumulates increases, the amount of debris clogging the mesh surface increases along with the amount of debris floating and piling up, and the amount passing through the mesh of the collection basket 39a decreases. This causes the water level in the collection basket 39a to gradually rise, which is detected by the detector 39b, prompting an operator to replace the collection basket 39a. By providing the detector 39b in this way, it is possible to prevent debris R containing cleaning water from overflowing from the collection basket 39a.

[0055] In this embodiment, when dishwashing by the washing device 1 is completed, a recovery step may be provided in which debris R remaining in the piping in the recovery section 30 of the first washing section 11 is recovered. In the recovery step, debris R remaining on the filter 31 and debris R remaining in the suction pipe 43 can be recovered into the recovery basket 39a by repeatedly starting and stopping the pressure pump 41 multiple times. For example, debris R remaining on the filter 31 may be recovered by an operator repeatedly gathering the debris R in the groove 34 and recovering it from the suction pipe 43. Alternatively, when the pressure pump 41 is stopped, the wash water remaining in the piping 48 and the washing nozzle 61 returns to the washing tank 38, causing the water level of the washing tank 38 to rise. If the bottom of the filter 31 is set to be submerged at that time, debris R on the filter 31 will float due to the increased water level and will be recovered from the groove 34 the next time the pressure pump is started. This action may be repeated to recover the debris R.

[0056] In this embodiment, a return pipe 45 is provided to reuse the cleaning water stored in the dirt collection tank 39. Specifically, As shown in Figure 2, Since the cleaning tank 38 and the waste collection tank 39 are connected by a return pipe 45, the water level WS of the cleaning tank 38 and the water level WS of the waste collection tank 39 are kept at the same height (Pascal's principle).

[0057] That is, cleaning water is discharged from the cleaning tank 38 to the garbage collection tank 39 as the garbage R is collected, but the same amount of cleaning water as that discharged into the garbage collection tank 39 is sent from the garbage collection tank 39 to the cleaning tank 38 via the return pipe 45 (see arrow Y3 in FIG. 2 and arrow Y3 in FIG. 3). In this way, in this embodiment, the cleaning water stored in the garbage collection tank 39 is also reused.

[0058] <Actions and Effects> According to the cleaning device 1 of this embodiment, by providing the grooves 34 in the filter 31, it is possible to increase the types of flow of cleaning water on the filter 31 (main body 32). Specifically, in conventional cleaning devices, the only flow of cleaning water is one that passes through the through holes 33 of the filter 31 and heads toward the cleaning tank 38 (see arrow Y8 in FIG. 4). For this reason, dirt R washed away from the object P ends up remaining on the main body 32. However, in this embodiment, by providing the grooves 34 in the main body 32, it is possible to generate a flow of cleaning water toward the grooves 34 (see arrow Y4 in FIG. 4). This allows the dirt R to be collected in the grooves 34 from above the filter 31 (main body 32).

[0059] In addition, the filter 31 has an inclined surface 37 in the groove 34. This allows the cleaning water to flow properly toward the groove 34, and the dirt R can be collected in the groove 34 more reliably.

[0060] Furthermore, according to the cleaning device 1 of this embodiment, the suction port 36 is positioned so as to be submerged in the cleaning water stored in the cleaning tank 38. As a result, the cleaning water flowing toward the groove 34 and the debris R collected in the groove 34 are mixed with the cleaning water in the groove 34 and are smoothly discharged from the suction port 36, so that debris is less likely to remain in the groove 34.

[0061] Furthermore, in the cleaning device 1 according to this embodiment, the bottom surface 35a of the groove bottom 35 is made of a plate-like member that does not allow cleaning water to pass through. This allows the dirt R collected in the groove portion 34 to be properly collected in the suction port 36 when the dirt R is sucked.

[0062] Furthermore, the cleaning device 1 according to this embodiment is configured to suck up the dirt R collected in the groove portion 34 by the discharge mechanism 42 and discharge (discharge) the sucked dirt R into the collection basket 39a. This allows for easy and efficient collection of dirt despite the simple structure.

[0063] Furthermore, in the cleaning device 1 according to this embodiment, the filter 31 has a mesh structure that defines through-holes 33 in areas other than the bottom surface 35a of the groove bottom 35. As a result, even if the debris R washed away from the object P is fine, such as ground sesame or hijiki seaweed, the debris R can be easily collected without clogging the through-holes 33 and without being mixed into the cleaning tank 38.

[0064] Furthermore, according to the cleaning apparatus 1 of this embodiment, the object P is transported in the transport direction while undergoing multiple cleaning stages, with the first cleaning unit 11 performing the first stage of the multiple cleaning stages. This allows the dirt R to be properly collected in the first cleaning stage and prevents it from re-adhering to the object P, which not only prevents contamination of the cleaning water in the cleaning tank 38 of the first cleaning unit 11 (such as dirt being mixed into the cleaning water), but also prevents the dirt R from re-adhering to the object P and being carried to the next stage, the second cleaning unit 12 or the third cleaning unit 13, and thus prevents the dirt R from mixing into and contaminating the cleaning tank 47 of the second cleaning unit 12 or the third cleaning unit.

[0065] <Other forms> The present invention is not limited to the above-described embodiments, and can be appropriately modified, improved, etc. Furthermore, the material, shape, size, number, location, etc. of each component in the above-described embodiments are arbitrary and not limited as long as they can achieve the present invention.

[0066] For example, in this embodiment, the main body 32 and the grooves 34 are integrally configured, but they may also be configured separately. By configuring them as separate parts, only the main body 32 of the filter 31 can be removed from the cleaning device 1 for easy cleaning, and the size of the mesh of the main body 32 (i.e., the opening area of ​​the through-holes 33) can be changed depending on the expected amount of debris R to be washed away. Note that the debris R to be washed away is expected to be, for example, food scraps that may adhere to the object P to be washed depending on the meal menu, etc.

[0067] For example, in this embodiment, the main body portion 32 is configured to be parallel to the horizontal direction, but may be configured to be inclined toward the groove portion 34.

[0068] For example, in this embodiment, the function of the discharge mechanism 42 is to generate negative pressure to suck the dust R in the groove portion 34, but the function is not limited to this as long as the dust R can be sucked.

[0069] For example, in this embodiment, the guide section 50 is provided in the collection section 30, but the guide section 50 does not necessarily have to be provided.

[0070] Here, the features of the above-described embodiments of the cleaning device according to the present invention will be briefly summarized and listed below in [1] to [6]. [1] A washing device (1) comprising a washing section (first washing section 11) for washing an object to be washed (P) with washing water, and a recovery section (30) provided in the washing section, The collection section (30) Collecting the dirt (R) washed away from the object by the cleaning; a filter (31) having through holes (33) through which the cleaning water can pass; The filter (31) a groove (34) recessed downward in the vertical direction when the cleaning device (1) is installed is provided in a part of the filter (31); A suction port (36) for sucking the dust is provided at the groove bottom (35) of the groove portion. Cleaning device (1). [2] In the cleaning device (1) described in [1] above, The cleaning unit includes: The washing machine further includes a washing tank (38) capable of collecting and storing the washing water that has passed through the through-holes (33), The suction port (36) The cleaning tank (38) is disposed so as to be submerged in the cleaning water stored therein. Cleaning device (1). [3] In the cleaning device (1) described in [1] or [2] above, The groove portion (34) is The bottom surface (35a) of the groove bottom (35) is made of a plate-like member that does not allow the cleaning water to pass through, The suction port (36) is provided on the bottom surface (35a). Cleaning device (1). [4] In the cleaning device (1) according to any one of the above [1] to [3], The collection section (30) a collection basket (39a) for collecting the dust sucked through the suction port (36); and a discharge mechanism for sucking the dust into the collection basket (39a). Cleaning device (1). [5] In the cleaning device (1) according to any one of the above [1] to [4], The filter (31) The groove bottom (35) has a mesh structure at other locations except for the bottom surface (35a). Cleaning device (1). [6] In the cleaning device (1) according to any one of the above [1] to [5], The object to be cleaned (P) is cleaned in the plurality of cleaning sections while being conveyed in a conveying direction, The collection section (30) The cleaning unit is provided in the first cleaning unit among the plurality of cleaning units. Cleaning device (1). [Explanation of symbols]

[0071] 1 Cleaning equipment 11 First cleaning section 12 Second cleaning section 13 Third Cleaning Section 20 Conveyor 30 Collection Department 31 filters 32 Main body 33 Through hole 34 Groove 35 Groove bottom 35a Bottom 36 Suction port 38 Cleaning tank 39 Collection tank 39a Collection basket 39b Detection unit 39c Lid 41 Pressure pump 42 Discharge mechanism 50 Guide section 51 Support part 52 Finn 61 Cleaning nozzle P Item to be cleaned R Garbage

Claims

1. A washing device comprising: a washing unit that washes an object to be washed with washing water; and a recovery unit that is provided in the washing unit and recovers dirt washed away from the object to be washed by the washing water, The cleaning unit includes: a washing nozzle that sprays the washing water toward the object to be washed from above to below in the vertical direction when the washing device is installed; a cleaning tank disposed below the cleaning nozzle and having an upward opening so as to be able to collect and store the cleaning water sprayed from the cleaning nozzle; a pressure pump that pressure-feeds the cleaning water stored in the cleaning tank to the cleaning nozzle, The recovery unit includes: a filter having through holes through which the cleaning water can pass; The filter is attached to the cleaning tank so as to close the upper opening of the cleaning tank; a groove recessed downward in the vertical direction is provided in a part of the main body of the filter; a suction port for sucking the dust is provided at the bottom of the groove; The recovery unit includes: a collection tank into which the dirt and cleaning water sucked through the suction port are discharged; a collection basket that is housed in the collection tank and collects the waste; and a return pipe for sending the cleaning water that has passed through the recovery basket to the cleaning tank. Cleaning equipment.

2. 2. The cleaning device according to claim 1, The recovery tank is a lid portion disposed outside a housing of the cleaning device and provided on the recovery tank; Cleaning equipment.

3. 3. The cleaning apparatus according to claim 1, The suction port is The cleaning device is disposed so as to be submerged in the cleaning water stored in the cleaning tank. Cleaning equipment.

4. The cleaning device according to any one of claims 1 to 3, The main body of the filter is It is flat and configured to be parallel to the horizontal direction. Cleaning equipment.

5. The cleaning device according to any one of claims 1 to 4, The filter is The groove has a mesh structure at other locations except for the bottom surface thereof. Cleaning equipment.

6. The cleaning device according to any one of claims 1 to 5, The object to be cleaned is cleaned in the plurality of cleaning units while being conveyed in a conveying direction, The recovery unit includes: The cleaning unit is provided in the first cleaning unit among the plurality of cleaning units. Cleaning equipment.

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