Food material cleaning tank and cleaning device

Abstract

The food material cleaning tank comprises an outer tank and a draining tank detachably arranged in the outer tank, the bottom of the draining tank is provided with an aeration channel capable of being communicated with an external air source, and the inner bottom wall of the draining tank is provided with aeration holes which are communicated with the aeration channel and used for blowing air into the draining tank. An air guide pipe with an upward air outlet end is arranged below the draining groove, and an assembly opening for the upper end of the air guide pipe to be detachably inserted into so as to be communicated with the aeration channel is formed in the outer bottom wall of the draining groove. The aeration holes in the inner bottom wall of the draining tank directly blow air into the draining tank, and the blown air cannot be blocked by the bottom wall of the draining tank, so that boiling turbulent flow is formed in the draining tank, pesticide residues and dirt on the surface of an object to be cleaned are powerfully stripped, and the cleaning effect is improved; the aeration channel at the bottom of the draining tank is detachably connected with the air guide pipe at the bottom of the outer tank, so that whether the air channel is communicated or not can be selected according to needs.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen washing sinks, in particular to a food washing sink and a washing device capable of washing food such as fruits, vegetables, fish and meat.

[0002] This utility model claims priority to the Chinese patent application filed with the Patent Office of China on April 30, 2025, with application number 2025208626106 and application name “A Cleaning Device”, parts of which are incorporated by reference into this application. Background Art

[0003] For Chinese kitchens, due to the abundance of food ingredients, there is a high demand for cleaning fruits, vegetables, fish and meat. At present, people mostly use sinks to clean fruits, vegetables, fish and meat, which is time-consuming and labor-intensive. In order to solve this problem, the applicant's prior patent ZL201610632336.9 "Integrated sink cleaning device" discloses a structure that integrates an independent fruit and vegetable washing machine next to the sink. Although it provides convenience for users to wash fruits, vegetables, fish and meat, the drainage component and the drive structure of the fruit and vegetable washing machine are all arranged at the bottom of the sink, resulting in the fruit and vegetable washing machine and the sink being severely limited in height, affecting the independent use space of the sink.

[0004] ZL201821326601.1 "A sink-type washing machine with a fruit and vegetable machine" discloses a structure that, based on the integrated structure of a sink and a sink dishwasher, is equipped with a detachable and movable fruit and vegetable machine in the sink. Although this structure provides convenience for independently washing fruits and vegetables, the water spraying part of the fruit and vegetable washing machine actually adopts the same spray arm structure as the sink washing machine, and the water supply to the water spraying part requires the water supply system of the original sink washing machine. For the above-mentioned fruit and vegetable machine, the return water spray of the spray arm is mainly used to provide turbulent water flow to wash fruits and vegetables, and the spray arm is independently set under its fruit and vegetable trough. The bottom wall of the fruit and vegetable trough will block the upward spray water column provided by the spray arm to a certain extent, which greatly affects the turbulence level of the turbulent flow and thus affects the effect. Utility Model Content

[0005] The first technical problem to be solved by the present invention is to provide a food cleaning tank that improves the turbulence effect and cleaning effect of water flow in response to the current status of the existing technology.

[0006] The second technical problem to be solved by the present invention is to provide a cleaning device using the above-mentioned food cleaning tank in view of the current status of the existing technology.

[0007] The technical solution adopted by the present invention to solve at least one of the above technical problems is:

[0008] A food cleaning trough comprises an outer trough and a drain trough detachably arranged in the outer trough, the bottom of the drain trough is provided with an aeration channel which can be connected to an external air source, the inner bottom wall of the drain trough is provided with aeration holes which are connected to the aeration channel and are used to blow air into the drain trough, an air guide pipe with an air outlet end facing upward is provided under the drain trough, the outer bottom wall of the drain trough is provided with an assembly port for the upper end of the air guide pipe to be detachably inserted therein so as to be connected to the aeration channel, the bottom of the outer trough is provided with a partially concave water flow area, and at least a part of the air guide pipe is accommodated in the water flow area.

[0009] With the above structure, the aeration holes on the bottom wall of the drain trough directly blow air into the drain trough, and the blowing air will not be blocked by the bottom wall of the drain trough, thereby forming a boiling turbulent flow in the drain trough, strongly stripping off agricultural residues and dirt on the surface of the objects to be cleaned, and improving the cleaning effect; the aeration channel at the bottom of the drain trough is detachably connected to the air guide pipe at the bottom of the outer trough, which is convenient for selecting whether the airway is connected or not according to needs; the air guide pipe is at least partially arranged in the water flow area, which improves the assembly compactness of the air intake structure and the water intake and discharge structure, and makes full use of the space of the food cleaning trough.

[0010] Preferably, the upper end of the air guide tube is provided with an end cap, and the air outlet of the air guide tube is located between the upper end surface of the air guide tube and the end cap. Such a structure facilitates the lateral dispersion of the air outlet of the air guide tube, thereby dispersing it in the aeration channel.

[0011] More preferably, the lower surface of the end cap is provided with a guide cone with its tip facing the incoming air. This structure is conducive to further guiding and dispersing the incoming air, thereby reducing wind resistance and improving the blowing effect.

[0012] Preferably, the diameter of the end cap is smaller than the diameter of the upper end of the air duct, and the edge of the end cap is connected to the upper end of the air duct via a connecting rib extending obliquely from bottom to top. This structure facilitates connection of the end cap, and the oblique connecting rib also serves to directionally guide the airflow, further improving gas dispersion uniformity.

[0013] To facilitate assembly, the inner bottom wall of the drain trough is partially arched upward at the corresponding end cap to form a space for accommodating the end cap. This structure can serve as a positioning guide when the air guide tube is inserted into the assembly port, and prevent the upper end of the air guide tube from interfering with the inner top wall of the aeration channel after assembly.

[0014] Preferably, in the assembled state, the assembly port is connected to the outer wall of the air guide tube via a sealing structure, which can achieve a tight seal between the air guide tube and the aeration channel to prevent air leakage.

[0015] Preferably, the lower portion of the air duct is housed in the water flow area, and the upper portion of the air duct bends upward from bottom to top and extends toward the bottom of the drain trough. Since the drain trough bottom wall is densely covered with drain holes, the above structure allows the water flow area to serve as a water inlet area, connected to an external water source, allowing water to flow into the outer trough, thereby submerging the items to be cleaned in the drain trough. The water flow area can also serve as a drainage area, connected to an external drainage pipe, to quickly drain dirty water, thereby removing agricultural residues, purines, and dirt in the water, facilitating 360-degree penetration, adsorption, and exfoliation of the items to be cleaned after water is refilled, thereby obtaining healthy food ingredients.

[0016] Preferably, the top of the water flow area is covered with a filter plate, and the air guide tube passes through the filter plate with its upper end exposed above the filter plate. The filter plate can filter out large impurities, preventing them from entering the water flow area and causing blockage of the water inlet and outlet. At the same time, the filter plate allows silt and small impurities to enter, preventing them from entering the drain trough and rolling with turbulent flow, thereby improving the cleaning effect.

[0017] Preferably, the air duct is an L-shaped structure with a transverse portion and a vertical portion. The transverse portion is located in the water flow area and its inlet end extends to the side of the water flow area. The vertical portion is arranged through the filter plate. This structure facilitates the rational installation of the air duct, fully utilizes the installation space, shortens the air supply distance, and improves the aeration effect.

[0018] Preferably, a plug sleeve extending from bottom to top for the vertical portion to pass through is provided in the middle of the filter plate. The plug sleeve can partially limit the position of the air duct, which is beneficial to improving the installation reliability of the air duct and the filter plate.

[0019] Preferably, in the assembled state, the assembly opening at the bottom of the drain trough is connected to the upper end of the plug sleeve via a sealing structure, which can achieve a tight seal between the air guide pipe and the aeration channel to prevent air leakage.

[0020] To facilitate assembly, the outer peripheral wall of the vertical portion is provided with a rib, and correspondingly, the inner peripheral wall of the plug sleeve is provided with a rib that can engage with the rib to limit the position. This structure facilitates the installation and positioning of the upper section of the air guide tube, thereby improving its installation reliability.

[0021] In order to further improve the installation reliability of the air duct, the horizontal part is arranged close to the inner bottom wall of the water flow area, and a connecting arm extending outward is provided on the outer side of the horizontal part. The connecting arm is locked on the bottom wall of the water flow area. The locking structure can be a locking method such as screws, clips, etc., or other locking methods.

[0022] A cleaning device includes a sink and the aforementioned food cleaning sink, wherein the food cleaning sink is detachably mounted in the sink. The sink's transverse length is greater than its front-to-back width, providing a large washing space in the transverse direction to accommodate the washing of long dishes. This structure can shorten the sink's height, facilitating the utilization of the space beneath the sink. The food cleaning sink can be laterally mounted in the sink via supports provided at the top and / or bottom. The sink's sidewalls and corresponding sides of the food cleaning sink are provided with corresponding drainage and air intake structures. The food cleaning sink can be docked or separated from the medium opening on the sink's sidewalls by moving the food cleaning sink left and right. Existing food cleaning sinks are combined with sinks or sink dishwashers in such a way that the food cleaning sink takes up the usable space of the sink. The present invention provides a food cleaning sink that can be combined with or separated from the sink. When combined with the sink, it becomes an electric cleaning sink. When separated from the sink, it returns to a large, independent sink to meet the user's diverse cleaning needs.

[0023] Preferably, a micro-nano bubble generator is installed outside the water tank to provide micro-nano bubble water for the food washing tank. This micro-nano bubble generator is detachably connected to the water source and the water flow area of ​​the food washing tank. This structure allows for the supply of micro-nano bubble water to the food washing tank, enhancing purification capabilities. The micro-nano bubble water can penetrate the micropores and crevices of the skin of fruits and vegetables, and penetrate and loosen the muscle fibers of meat and seafood. The micro-nano bubbles adhere tightly to the food, transferring pesticide residues, purines, and other impurities to the surface. These are then released into the water through aerated turbulence, resulting in healthier food.

[0024] Preferably, an air pump assembly is provided outside the water tank for supplying air to the aeration channel, and the air pump assembly is detachably connected to the air guide pipe of the food cleaning tank. This structure facilitates providing boiling turbulence through the aeration channel to improve the cleaning effect.

[0025] Preferably, a drainage pump structure is provided outside the sink to drain water from the food washing tank. The drainage pump structure is detachably connected to the downpipe and the water flow area of ​​the food washing tank. This structure facilitates rapid drainage of wastewater and replacement of fresh wash water, thereby improving cleaning efficiency and effectiveness.

[0026] Compared with the existing technology, the advantages of the present invention are: the present invention directly blows air into the drain trough through the aeration channel arranged at the bottom of the drain trough and the aeration holes located on the bottom wall of the drain trough. The air will not be blocked by the bottom wall of the drain trough, thereby forming a boiling turbulence in the drain trough, strongly stripping off agricultural residues and dirt on the surface of the objects to be cleaned, and improving the cleaning effect; the aeration channel located at the bottom of the drain trough is detachably connected to the air guide pipe at the bottom of the outer trough, which is convenient for selecting whether the air channel is connected or not according to needs, thereby meeting different usage requirements of the drain trough. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a structural diagram of a food cleaning tank in an embodiment of the present invention;

[0028] Figure 2 for Figure 1 Cross-sectional view (longitudinal section);

[0029] Figure 3 for Figure 2 A partial enlarged view of

[0030] Figure 4 for Figure 3 A partial enlarged view of

[0031] Figure 5 This is a cross-sectional view (transverse section) of a cleaning device in an embodiment of the present utility model;

[0032] Figure 6 for Figure 1 Exploded view of

[0033] Figure 7 This is a structural diagram of the drain trough in an embodiment of the present utility model;

[0034] Figure 8 This is a schematic structural diagram of a cleaning device according to an embodiment of the present utility model;

[0035] Figure 9 for Figure 8 Exploded view of

[0036] Figure 10 This is a schematic structural diagram of the cleaning device in an embodiment of the present utility model (part of the housing is hidden). DETAILED DESCRIPTION

[0037] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0038] In the description of the present invention, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] Furthermore, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0040] In this utility model, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be understood broadly. For example, they can refer to fixed connections, removable connections, or integration; mechanical connections, electrical connections; direct connections, indirect connections through an intermediary, and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0041] In this utility model, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, "above," "above," and "above" a first feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. "Below," "below," and "below" a first feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0042] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this utility model are for illustrative purposes only and do not represent the only embodiment.

[0043] like Figure 1 As shown in Figure 10, the food cleaning tank 100 of this embodiment includes an outer tank 1 and a drain tank 2 that can be detachably arranged in the outer tank 1. The bottom of the drain tank 2 is provided with an aeration channel 3 that can be connected to an external air source. The inner bottom wall of the drain tank 2 is provided with aeration holes 31 that are connected to the aeration channel 3 and used to blow air into the drain tank 2. The bottom of the outer tank 1 is provided with an air guide pipe 5 with an air outlet end facing upward, and the outer bottom wall of the drain tank 2 is provided with an assembly port 23 for the upper end of the air guide pipe 5 to be detachably inserted therein so as to be connected to the aeration channel 3.

[0044] like Figure 7 As shown, the aeration channel 3 of this embodiment includes a plurality of interconnected transverse arms 301 and longitudinal arms 302 , and a plurality of aeration holes 31 are respectively connected to the transverse arms 301 and the longitudinal arms 302 to improve the aeration coverage.

[0045] With the above structure, the aeration holes 31 on the inner bottom wall of the drain trough 2 directly blow air into the drain trough 2, and the blowing air will not be blocked by the bottom wall of the drain trough 2, thereby forming a boiling turbulent flow in the drain trough 2, strongly stripping off agricultural residues and dirt on the surface of the objects to be cleaned, and improving the cleaning effect; the aeration channel 3 located at the bottom of the drain trough 2 is detachably connected to the air guide pipe 5 at the bottom of the outer tank 1, which is convenient for selecting whether the airway is connected or not according to needs.

[0046] like Figure 2 、 3 As shown in FIG4 , the upper end of the air guide pipe 5 of this embodiment is provided with an end cap 51, and the lower surface of the end cap 51 is provided with a guide cone 52 arranged with the tip facing the direction of the incoming air. This structure guides and disperses the incoming air to reduce wind resistance and improve the blowing effect.

[0047] The diameter of the end cap 51 is smaller than that of the upper end of the air duct 5. The edge of the end cap 51 is connected to the upper end of the air duct 5 via a connecting rib 53 that extends obliquely from bottom to top. This structure facilitates connection of the end cap 51, and the oblique connecting rib 53 also serves to directionally guide the airflow, further improving gas dispersion uniformity.

[0048] In order to facilitate assembly, the inner bottom wall of the drain trough 2 is partially arched upward at a position corresponding to the end cap 51 to form a space 30 located in the aeration channel 3 for accommodating the end cap 51 .

[0049] In this embodiment, if Figure 2 、 3 As shown in Figures 5 and 6, a partially concave water flow area 13 is provided at the bottom of the outer tank 1. The lower portion of the air guide tube 5 is accommodated in the water flow area 13, and the upper portion of the air guide tube 5 is bent from bottom to top and extends to the bottom of the drain trough 2. Since the bottom wall of the drain trough 2 is densely covered with drainage holes, the above structure allows the water flow area 13 to serve as a water inlet area, connected to an external water source, to allow water to flow into the outer tank 1 and immerse the objects to be cleaned in the drain trough 2. The water flow area 13 can also serve as a drainage area, connected to an external drainage pipe, to quickly drain away dirty and sewage water, thereby removing agricultural residues, purines, and dirt in the water, making it easier for the objects to be cleaned to be penetrated, adsorbed, and stripped 360 degrees without dead angles after water is refilled, thereby obtaining healthy food ingredients.

[0050] like Figure 2 、 3 As shown in Figures 6 and 7, the top of the water flow area 13 is covered with a filter plate 14. The air guide tube passes through the filter plate 14 with its upper end exposed above the filter plate 14. The filter plate 14 can filter out large impurities and prevent them from entering the water flow area 13 and causing blockage of the water inlet and outlet. At the same time, the filter plate 14 allows silt and small impurities to enter and prevent them from entering the drain trough 2 and rolling with the turbulent flow, thereby improving the cleaning effect.

[0051] like Figure 3 、 4 As shown, the air duct 5 of this embodiment has an L-shaped structure. The horizontal portion 501 of the L-shaped structure is located in the water flow area 13 and its inlet end extends to the side of the water flow area 13. The vertical portion 502 of the L-shaped structure is arranged through the filter plate 14. The middle part of the filter plate 14 is provided with a plug sleeve 141 extending from bottom to top for the vertical portion 502 to pass through.

[0052] To facilitate assembly, the outer wall of the vertical portion 502 is provided with a rib 503. Correspondingly, the inner wall of the plug sleeve 141 is provided with a rib 142 that can engage with the rib 503. This structure facilitates the installation and positioning of the upper section of the air guide tube, thereby improving its installation reliability.

[0053] In order to further improve the installation reliability of the air duct 5, the transverse portion 501 is arranged close to the inner bottom wall of the water flow area 13, and an outward-extending connecting arm 504 is provided on the outer side of the transverse portion 501. The connecting arm 504 is locked to the bottom wall of the water flow area 13 by a screw 505.

[0054] like Figure 5 、 8As shown in Figures 9 and 10, the cleaning device of this embodiment includes a sink 4 and the aforementioned food cleaning tank 100, which is detachably mounted within the sink 4. The sink 4 is longer in the transverse direction than it is wide in the front-to-back direction, providing a large washing space to accommodate washing long dishes. This structure shortens the height of the sink 4, allowing for greater utilization of the space beneath it. The food cleaning tank 100 is laterally movable within the sink 4 via supports provided at the top and / or bottom. The sidewalls of the sink 4 and the corresponding sides of the food cleaning tank have corresponding drainage and air intake structures. The food cleaning tank can be connected or disconnected from the media openings on the sidewalls of the sink 4 by moving the food cleaning tank left and right. Existing food cleaning tanks that are integrated with sinks or sink dishwashers occupy the space available within the sink. This embodiment provides a food cleaning tank that can be attached and detached from the sink 4. When attached to the sink 4, it becomes an electric cleaning tank. When detached from the sink 4, it returns to a large, independent sink 4, meeting the varying cleaning needs of users.

[0055] In this embodiment, if Figure 10 As shown, a micro-nano bubble generator 01 is installed outside the water tank 4 to provide micro-nano bubble water for the food washing tank. This micro-nano bubble generator 01 is detachably connected to the water source and the water flow area 13 of the food washing tank 100. This structure allows the micro-nano bubble water to be supplied to the food washing tank, improving its purification capacity. The micro-nano bubble water can penetrate the micropores and crevices of the skin of fruits and vegetables, and penetrate and loosen the muscle fibers of meat and seafood. The micro-nano bubbles tightly adhere to the food, transferring pesticide residues, purines, and dirt to the surface. These are then released into the water through aerated turbulence, resulting in healthier food.

[0056] An air pump assembly 02 for supplying air to the aeration channel 3 is provided outside the water tank 4. The air pump assembly 02 is detachably connected to the air guide pipe 5 of the food cleaning tank 100. This structure facilitates providing boiling turbulence through the aeration channel 3 to improve the cleaning effect.

[0057] A drainage pump structure 03 is installed outside the water tank 4 to drain the water from the food washing tank 100. The drainage pump structure 03 is detachably connected to the downpipe and the water flow area 13 of the food washing tank 100. This structure facilitates the rapid drainage of wastewater and the replacement of fresh wash water, thereby improving cleaning efficiency and cleaning results.

[0058] The micro-nano bubble generating device 01, the air pump assembly 02, and the drainage pump structure 03 of this embodiment can be independently arranged on the outer wall of the water tank 4, or they can be integrated into a mounting module and mounted on the outer wall of the water tank 4 as a whole to make full use of the peripheral space of the water tank 4 and improve space utilization. When an integrated mounting module 6 is adopted, it is also convenient to set a medium port 200 for docking between the side wall of the water tank 4 and the side wall of the outer tank 1. For example, when the food cleaning tank 100 is slid to the right to the end of the water tank 4, the docking of the medium port 200 can be achieved, and the food cleaning tank 100 can be in a state of supplying water, air, and drainage.

[0059] When the food cleaning tank 100 of this embodiment is used to clean fruits, vegetables, fish and meat, water is injected into the outer tank 1, and the objects to be cleaned are placed in the drain tank 2. The water passes through the bottom of the drain tank 2 and immerses the objects to be cleaned therein. Turbulence can be further formed in the drain tank 2 through the aeration channel 3 and the aeration holes 31 to clean the objects.

[0060] In this embodiment, air is directly blown into the drain trough 2 through the aeration channel 3 provided at the bottom of the drain trough 2 and the aeration holes 31 located on the inner bottom wall of the drain trough 2. The blown air will not be blocked by the bottom wall of the drain trough 2, thereby forming a boiling turbulent flow in the drain trough 2, strongly stripping off agricultural residues and dirt on the surface of the object to be cleaned, and improving the cleaning effect; the aeration channel 3 located at the bottom of the drain trough 2 is detachably connected to the air guide pipe 5 at the bottom of the outer trough 1, which is convenient for selecting whether the air channel is connected or not according to needs, thereby meeting different usage requirements of the drain trough 2.

[0061] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A food cleaning tank, comprising an outer tank (1) and a drain tank (2) detachably arranged in the outer tank (1), wherein the bottom of the drain tank (2) is provided with an aeration channel (3) that can be connected to an external air source, characterized in that: The inner bottom wall of the drain trough (2) is provided with an aeration hole (31) which is connected to the aeration channel (3) and is used to blow air into the drain trough (2); an air guide pipe (5) with an air outlet end facing upward is provided below the drain trough (2); the outer bottom wall of the drain trough (2) is provided with an assembly port (23) for the upper end of the air guide pipe (5) to be detachably inserted therein so as to be connected to the aeration channel (3); the bottom of the outer trough (1) is provided with a partially concave water flow area (13), and at least a part of the air guide pipe (5) is accommodated in the water flow area (13).

2. The food cleaning tank according to claim 1, characterized in that: The upper end of the air guide tube (5) is provided with an end cap (51), and the air outlet of the air guide tube (5) is located between the upper end surface of the air guide tube (5) and the end cap (51).

3. The food cleaning tank according to claim 2, characterized in that: The lower surface of the end cap (51) is provided with a guide cone (52) with its tip facing the incoming air direction.

4. The food cleaning tank according to claim 2, characterized in that: The diameter of the end cap (51) is smaller than the diameter of the upper end of the air guide tube (5), and the edge of the end cap (51) is connected to the upper end of the air guide tube (5) via a connecting rib (53) extending obliquely from bottom to top.

5. The food cleaning tank according to claim 2, characterized in that: The inner bottom wall of the drain trough (2) is partially arched upward at a position corresponding to the end cap (51) to form a space for accommodating the end cap (51).

6. The food cleaning tank according to claim 2, characterized in that: In the assembled state, the assembly port (23) is connected to the outer wall of the air guide tube (5) via a sealing structure.

7. The food washing tank according to any one of claims 1 to 6, characterized in that: The lower portion of the air guide pipe (5) is accommodated in the water flow area (13), and the upper portion of the air guide pipe (5) is bent upward from bottom to extend toward the bottom of the drain trough (2).

8. The food cleaning tank according to claim 7, characterized in that: The top of the water flow area (13) is covered with a filter plate (14), and the air guide tube (5) passes through the filter plate (14) with its upper end exposed above the filter plate (14).

9. The food cleaning tank according to claim 8, characterized in that: The air guide tube (5) is an L-shaped structure having a transverse portion (501) and a vertical portion (502). The transverse portion (501) is located in the water flow area (13) and its inlet end extends to the side of the water flow area (13). The vertical portion (502) is arranged through the filter plate (14).

10. The food cleaning tank according to claim 9, characterized in that: A plug sleeve (141) extending from bottom to top and allowing the vertical portion (502) to pass through is provided in the middle of the filter plate (14).

11. The food cleaning tank according to claim 10, characterized in that: In the assembled state, the assembly opening (23) at the bottom of the drain trough (2) is connected to the upper end of the plug sleeve (141) via a sealing structure.

12. The food cleaning tank according to claim 10, characterized in that: The outer peripheral wall of the vertical portion (502) is provided with a convex rib (503), and correspondingly, the inner peripheral wall of the plug sleeve (141) is provided with a convex clamp (142) capable of engaging with the convex rib (503) for limiting position.

13. The food cleaning tank according to claim 9, characterized in that: The transverse portion (501) is arranged close to the inner bottom wall of the water flow area (13), and an outwardly extending connecting arm (504) is provided on the outer side of the transverse portion (501), and the connecting arm (504) is locked on the bottom wall of the water flow area (13).

14. A cleaning device comprising a water tank (4), characterized in that: It also includes a food cleaning tank according to any one of claims 7 to 13, wherein the food cleaning tank is detachably arranged in the water tank (4).

15. The cleaning device according to claim 14, characterized in that: A micro-nano bubble generating device (01) capable of providing micro-nano bubble water to the food cleaning tank is provided outside the water tank (4). The micro-nano bubble generating device (01) is detachably connected to a water source and a water flow area (13) of the food cleaning tank.

16. The cleaning device according to claim 14, characterized in that: An air pump assembly (02) for supplying air to the aeration channel is provided outside the water tank (4), and the air pump assembly (02) is detachably connected to the air guide pipe (5) of the food cleaning tank.

17. The cleaning device according to claim 14, characterized in that: A drainage pump structure (03) capable of draining water from the food cleaning tank is provided outside the water tank (4). The drainage pump structure (03) is detachably connected to the downpipe and the water flow area (13) of the food cleaning tank.

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