Air knife drainage system and tableware cleaning equipment

Abstract

The invention provides an air knife drainage system and tableware cleaning equipment, and belongs to the technical field of tableware cleaning, and the air knife drainage system comprises an air knife assembly used for supplying air upwards to form an air knife; and the water tank is connected to the air knife assembly and used for collecting cleaning water entering the air knife assembly, and a drainage mechanism capable of being opened and closed is arranged at the bottom of the water tank. The water tank is arranged to be connected with the air knife assembly, after the rinsing water enters the air knife assembly, the rinsing water can be discharged into the water tank to be collected, the situation that the rinsing water is accumulated in the air knife assembly and influences air conveying is avoided, and therefore the influence that the rinsing water enters the air knife assembly can be avoided, the tableware drying effect can be guaranteed, and the drying efficiency is improved.

Description

Technical Field

[0001] This application belongs to the field of tableware cleaning technology, specifically relating to an air knife drainage system and tableware cleaning equipment. Background Technology

[0002] Commercial dishwashers are designed for commercial settings such as bars, canteens, restaurants, and dish sterilization centers, making them indispensable cleaning tools. These dishwashers are characterized by high temperatures, sterilization, high intensity, and short processing times, ensuring rapid and thorough cleaning of tableware. Their advantages, including fast washing speed, space saving, cost reduction, and improved hygiene, have secured them a prominent position among the numerous commercial dishwasher brands on the market.

[0003] Commercial dishwashers primarily consist of three zones: a main wash zone, a rinse zone, and a drying zone. The main wash zone removes large particles of dirt from dishes, effectively removing grease and inhibiting bacterial growth. The rinse zone focuses on removing detergent residue from dishes using hot water spray. The drying zone assists the rinse zone in further enhancing drying efficiency, employing powerful hot air jets to significantly accelerate the drying process.

[0004] In existing technologies, the drying zone has an air knife structure below the conveying mechanism that blows air upwards from the bottom of the tableware. This air knife, combined with the air knife above, dries the tableware. However, there is a possibility that rinsing water may enter the air knife structure below. As the working time increases, the amount of rinsing water entering increases, which can easily affect the air conveying. Summary of the Invention

[0005] This application aims to at least solve one of the aforementioned technical problems existing in the prior art. To this end, in a first aspect, this application provides an air knife drainage system capable of solving the problem of rinsing water entering the air knife.

[0006] Secondly, this application provides a tableware cleaning device that uses the above-mentioned air knife drainage system.

[0007] The air knife drainage system according to the first aspect of this application includes: An air knife assembly, wherein the air knife assembly is used to deliver air upwards to form an air knife; A water tank, connected to the air knife assembly, is used to collect the cleaning water entering the air knife assembly. The bottom of the water tank is provided with an openable and closable drainage mechanism.

[0008] The air knife drainage system according to the embodiments of this application has at least the following beneficial effects: The air knife drainage system of this embodiment connects the air knife assembly to a water tank. After the rinsing water enters the air knife assembly, it can be discharged into the water tank for collection, preventing the rinsing water from accumulating inside the air knife assembly and affecting the air delivery. This solves the problem of rinsing water entering the air knife, which helps to ensure the drying effect of tableware and improve drying efficiency.

[0009] According to some embodiments of this application, the air knife drainage system is provided with a plurality of air knife assemblies, and the water tank is provided with a plurality of chambers arranged side by side in a horizontal direction, the bottoms of the plurality of chambers being interconnected. The plurality of chambers are connected one-to-one to the plurality of air knife assemblies.

[0010] According to some embodiments of this application, the drainage mechanism includes: A first drain pipe is connected to the bottom of each of the chambers; A control valve is provided on the first drain pipe and is used to control the opening and closing of the first drain pipe; A water level monitor is installed in the chamber to monitor the water level inside the chamber. A controller, connected to the water level monitor and the control valve, is used to open the control valve when the water level in the chamber reaches a set water level.

[0011] According to some embodiments of this application, the upper end of the water tank is connected to an overflow pipe, and the overflow pipe is connected to the water tank by an overflow hole, the diameter of which is between 0.1 mm and 5 mm.

[0012] According to some embodiments of this application, the air knife assembly includes: The bottom shell of the air box is connected to an air supply pipe; A slide plate is disposed at the upper end of the bottom shell of the air box, and the slide plate is inclined relative to the horizontal direction. The slide plate is provided with an air outlet.

[0013] According to some embodiments of this application, the air knife assembly further includes a separation box, the horizontal height of which is lower than that of the bottom shell of the air box, the air supply pipe is connected between the bottom shell of the air box and the separation box, and the water tank is connected to the bottom of the separation box.

[0014] According to some embodiments of this application, the slide plate is further provided with a first drain outlet, and a drainage trough plate is provided on the lower end surface of the slide plate. The drainage trough plate is located inside the bottom shell of the air box and defines a drainage ditch that connects to the first drain outlet.

[0015] According to some embodiments of this application, the drainage trough plate is connected to a second drainage pipe, which extends to the outside of the bottom shell of the air box.

[0016] According to some embodiments of this application, along the inclined direction of the slide, both ends of the slide protrude outward relative to the bottom shell of the bellows, and a second drain outlet is provided on the portion of the slide that protrudes outward relative to the bottom shell of the bellows.

[0017] The tableware cleaning apparatus according to the second aspect of this application includes the above-described air knife drainage system.

[0018] The tableware washing device according to the embodiments of this application has at least the following beneficial effects: In this embodiment of the tableware washing equipment, after the rinsing water enters the air knife assembly, it can be discharged into the water tank for collection, avoiding the accumulation of rinsing water inside the air knife assembly and affecting the air delivery. This solves the problem of rinsing water entering the air knife, which helps to ensure the drying effect of tableware and improve drying efficiency.

[0019] Additional aspects and advantages of this application will be set forth in part in the description which follows, and some of these additional aspects and advantages will become apparent from the description or may be learned by practice of this application. Attached Figure Description

[0020] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of a pneumatic knife drainage system. Figure 2 This is a cross-sectional view of a pneumatic knife drainage system; Figure 3 This is a schematic diagram of a water tank in a pneumatic knife drainage system. Figure 4 This is a schematic diagram of a pneumatic knife drainage system applied to tableware washing equipment. Figure 5 This is a schematic diagram of a wind knife assembly; Figure 6 This is a cross-sectional view of an air knife assembly; Figure 7 This is an overall isometric schematic diagram of an air knife assembly; Figure 8 This is an axonometric sectional view of the air knife assembly. Detailed Implementation

[0021] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0022] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0023] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0024] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0025] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0026] Commercial dishwashers are designed for commercial settings such as bars, canteens, restaurants, and dish sterilization centers, making them indispensable cleaning tools. These dishwashers are characterized by high temperatures, sterilization, high intensity, and short processing times, ensuring rapid and thorough cleaning of tableware. Their advantages, including fast washing speed, space saving, cost reduction, and improved hygiene, have secured them a prominent position among the numerous commercial dishwasher brands on the market.

[0027] Commercial dishwashers primarily consist of three zones: a main wash zone, a rinse zone, and a drying zone. The main wash zone removes large particles of dirt from dishes, effectively removing grease and inhibiting bacterial growth. The rinse zone focuses on removing detergent residue from dishes using hot water spray. The drying zone assists the rinse zone in further enhancing drying efficiency, employing powerful hot air jets to significantly accelerate the drying process.

[0028] In existing technologies, the drying zone has an air knife structure below the conveying mechanism that blows air upwards from the bottom of the tableware. This air knife, combined with the air knife above, dries the tableware. However, there is a possibility that rinsing water may enter the air knife structure below. As the working time increases, the amount of rinsing water entering increases, which can easily affect the air conveying.

[0029] In response to this issue, this application provides an air knife drainage system that can solve the problem of rinsing water entering the air knife.

[0030] Reference Figures 1 to 4 In some embodiments of this application, the air knife drainage system includes an air knife assembly 100 and a water tank 200. The air knife assembly 100 is used to blow air upward to form an air knife. The water tank 200 is connected to the air knife assembly 100 and is used to collect the cleaning water entering the air knife assembly 100. The bottom of the water tank 200 is provided with an openable and closable drainage mechanism.

[0031] Understandably, the air knife assembly 100 can be configured with reference to existing technologies, as long as it can generate airflow to form an air knife. Since the tableware carries a large amount of rinsing water when entering the drying zone from the rinsing area, this rinsing water is collected in the water tank 200 when it enters the air knife assembly 100. This prevents obstruction of the airflow within the air knife assembly 100 and also prevents rinsing water from being blown onto the tableware. After a certain amount of rinsing water is collected in the water tank 200, it can be drained through a drainage mechanism, which can be kept closed during the collection process to prevent air leakage.

[0032] Therefore, the air knife drainage system of this embodiment connects the air knife assembly 100 to the water tank 200. After the rinsing water enters the air knife assembly 100, it can be discharged into the water tank 200 for collection, avoiding the accumulation of rinsing water inside the air knife assembly 100 and affecting the air delivery. This solves the problem of rinsing water entering the air knife, which is beneficial to ensuring the drying effect of tableware and improving drying efficiency.

[0033] Reference Figure 3 and Figure 4In some embodiments of this application, the air knife drainage system is provided with multiple air knife assemblies 100 to form multiple air knives. The multiple air knife assemblies 100 can be arranged along the conveying direction of the tableware, so that the tableware undergoes multiple air knife drying processes during conveying. Corresponding to the multiple air knife assemblies 100, the water tank 200 is provided with multiple chambers 201 arranged side-by-side in a horizontal direction. Each chamber 201 corresponds to and is connected to one air knife assembly 100, i.e., one air knife assembly 100 is connected to one chamber 201, thereby draining rinsing water into the corresponding chamber 201. Simultaneously, the bottoms of the multiple chambers 201 are interconnected.

[0034] By adopting the structural configuration of this embodiment, the water tank 200 is divided into multiple chambers 201, each connected to the air knife assembly 100. This helps to prevent the air pressure inside the air knife assembly 100 from accumulating in the water tank 200 and obstructing the flow of rinsing water from the air knife assembly 100 into the water tank 200. Furthermore, the chambers 201 are connected at the bottom, ensuring that the liquid level in each chamber 201 is balanced and the discharge is consistent during drainage.

[0035] Reference Figure 3 Two vertical partitions 206 are installed inside the water tank 200, dividing it into three chambers 201. Each partition 206 has a notch 2061 at the bottom center, with the height of the notch 2061 controlled between 0.2mm and 5mm, allowing the three chambers 201 to communicate with each other. This embodiment includes three air knife assemblies 100, all used to deliver air upwards to form air knives. Each air knife assembly 100 is connected to the side wall of one chamber 201 via a return water pipe 204. When rinsing water flows from the air knife assembly 100 into the water tank 200, it quickly submerges the notch 2061, thus quickly separating the return water pipes 204 and preventing air pressure convergence from affecting the rinsing water's entry into the water tank 200 through the return water pipes 204. Simultaneously, it allows for communication between the chambers 201, facilitating drainage.

[0036] Furthermore, in some embodiments, a baffle 2041 is provided inside the water tank 200 corresponding to the opening of the return water pipe 204 to reduce the impact of the return water.

[0037] Reference Figure 3In some embodiments of this application, the drainage mechanism includes a first drain pipe 202, a control valve, a water level monitor 205, and a controller. The first drain pipe 202 is connected to the bottom of each chamber 201. The control valve is located on the first drain pipe 202 and is used to control the opening and closing of the first drain pipe 202. The water level monitor 205 is located in each chamber 201 and is used to monitor the water level within the chamber 201. Since the chambers 201 are interconnected, the water level can remain consistent; the water level monitor 205 can be located in any one chamber 201. The controller is connected to the water level monitor 205 and the control valve and is used to open the control valve when the water level in the chamber 201 reaches a set water level.

[0038] During operation, the water level monitor 205 monitors the water level at a relatively high position in the water tank 200. When the water level reaches the monitored level, the controller receives a signal and controls the control valve to open the first drain pipe 202 to drain the water from the water tank 200. When the water level drops to near the bottom of the water tank 200, but still does not exceed the gap 2061 connecting the chambers 201, the control valve closes, keeping the air between the chambers 201 isolated from each other, and this process is repeated continuously.

[0039] With the structural configuration of this embodiment, the drainage mechanism can control the water level in the water tank 200 within a stable range, taking into account both stable drainage from the water tank 200 and drainage from the air knife assembly 100 to the water tank 200.

[0040] Reference Figure 3 The first drain pipe 202 is installed horizontally at the bottom of the water tank 200 and is connected to each chamber 201 to ensure timely drainage.

[0041] Reference Figure 3 In some embodiments of this application, an overflow pipe 203 is connected to the upper end of the water tank 200. The overflow pipe 203 is connected to the water tank 200 via an overflow hole, the diameter of which is between 0.1 mm and 5 mm. It is understood that when rinsing water enters the water tank 200, it will compress the gas inside the water tank 200. In this embodiment, by providing an overflow pipe 203 at the top of the water tank 200, the air pressure can be balanced, preventing the air pressure inside the water tank 200 from rising and hindering the backflow of rinsing water.

[0042] Meanwhile, when the drainage mechanism malfunctions, water can be discharged through the overflow pipe 203 to prevent rinsing water from flowing back into the air knife assembly 100.

[0043] In this embodiment, the overflow pipe 203 and the water tank 200 are connected by a small-diameter overflow hole, which can effectively reduce air leakage and prevent the air force of the air knife assembly 100 from escaping out of the overflow pipe 203 in large quantities.

[0044] Reference Figures 5 to 8 In some embodiments of this application, the air knife assembly 100 includes a bellows base shell 101 and a slide 102, wherein the slide 102 is disposed at the upper end of the bellows base shell 101. The slide 102 is inclined relative to the horizontal direction, and its downward inclination direction is consistent with the conveying direction of the tableware, so that the tableware is conveyed from the high end to the low end along the slide 102. The slide 102 and the bellows base shell 101 together define a relatively closed chamber 201, and the slide 102 is provided with an air outlet 1022 communicating with the chamber 201. Furthermore, the bellows base shell 101 is connected to an air supply duct 103.

[0045] During operation, the air supply duct 103 supplies air into the chamber 201 and then discharges it upward through the air outlet 1022, forming an air knife that can remove water and dry the tableware.

[0046] The air knife assembly 100 of this embodiment, by setting an inclined slide 102, can be arranged between the conveyor mechanisms of the rinsing zone and the drying zone for receiving and transferring tableware. Its higher side connects to the conveyor mechanism of the rinsing zone, and its lower side connects to the conveyor mechanism of the drying zone. Furthermore, when receiving and transferring tableware, air is blown upwards through the air outlet 1022 to form an air knife, which can assist in drying the tableware immediately after it leaves the rinsing zone, thus improving drying efficiency.

[0047] It is understandable that tableware washing equipment typically uses a mesh chain structure for tableware conveying, resulting in a significant gap between the two mesh chain structures. The air knife assembly 100 of this embodiment can be positioned between the two mesh chain structures to transfer tableware, effectively reducing the actual gap between the two conveying structures and improving the smoothness of tableware transfer.

[0048] Reference Figure 6 In some embodiments of this application, the slide 102 is further provided with a first drain outlet 1021, and a drainage trough 1027 is provided on the lower end surface of the slide 102, the drainage trough 1027 defining a drainage channel that connects to the first drain outlet 1021.

[0049] As described in the foregoing embodiments, the air knife assembly 100 is positioned between the rinsing and drying zones and is used to support and transfer tableware. Therefore, some rinsing water will flow onto the slide 102, and residual rinsing water on the tableware will also flow onto the slide 102. This embodiment addresses this by providing a first drain outlet 1021 on the slide 102 and connecting a drain trough plate 1027 to the lower end of the first drain outlet 1021, which can collect the water on the slide 102 and discharge it centrally.

[0050] Combination Figure 6As shown, the drainage trough plate 1027 is located inside the bottom shell 101 of the wind box and is inclined in the direction of inclination. The size of the first drainage port 1021 is larger than the size of the air outlet 1022. This allows most of the water entering the bottom shell 101 of the wind box to be effectively collected through the first drainage port 1021, thus avoiding affecting the air delivery.

[0051] Reference Figure 6 In some embodiments of this application, the air outlet 1022 and the first drain outlet 1021 are alternately arranged along the inclined direction of the slide 102. Since the slide 102 has a certain length along the inclined direction, this embodiment can form multiple air blades to improve the drying effect and efficiency of tableware by alternately arranging the air outlet 1022 and the first drain outlet 1021, and can also effectively collect rinsing water to avoid rinsing water covering the air outlet 1022 and affecting the air blade effect.

[0052] Reference Figure 6 In some embodiments of this application, a second drain pipe 1028 is connected to the bottom of the drainage trough plate 1027, and the second drain pipe 1028 extends to the outside of the bottom shell 101 of the air box. It is understood that the rinsing water collected in the drainage trough plate 1027 will inevitably gather in low-lying areas. In this embodiment, by providing a second drain pipe 1028 at the bottom of the drainage trough plate 1027, the collected rinsing water can be discharged quickly.

[0053] Furthermore, in typical tableware washing equipment, a water recycling structure is provided at the bottom. In this embodiment, the bottom of the second drain pipe 1028 can be opened to directly discharge the collected water into the water recycling structure in the tableware washing equipment.

[0054] Reference Figure 5 and Figure 6 In some embodiments of this application, along the inclined direction of the slide 102, both ends of the slide 102 protrude outward relative to the bottom shell 101 of the bellows. Since the slide 102 in this embodiment mainly carries and transfers tableware between the conveying mechanism in the rinsing zone and the conveying mechanism in the drying zone, by setting both ends of the slide 102 to protrude, this embodiment helps to further reduce the gap between the two conveying mechanisms, improve the smoothness of tableware transfer, and enable the tableware to be transferred smoothly.

[0055] Reference Figure 6 In some embodiments of this application, a second drain outlet 1023 is provided on the portion of the slide plate 102 that protrudes outward relative to the bottom shell 101 of the air box. Water on the slide plate 102 can be discharged downward through the second drain outlet 1023, reducing the amount of rinsing water entering the drainage trough plate 1027 and the amount of rinsing water entering the drying zone.

[0056] Combination Figure 6As shown, the second drain outlet 1023 and the first drain outlet 1021 have the same structure, both extending a certain length along the inclined direction of the slide plate 102 to improve drainage efficiency.

[0057] Reference Figure 6 and Figure 7 In some embodiments of this application, the air outlet 1022 has a slit structure. Specifically, along the inclined direction of the slide 102, the size of the air outlet 1022 is small, thus forming a slit shape to facilitate the formation of an air knife, and also to reduce the amount of rinsing water entering the interior of the air box bottom shell 101 from the air outlet 1022. The specific size of the air outlet 1022 along the inclined direction of the slide 102 can be flexibly set as needed, for example, controlled between 0.05 mm and 0.05 mm, or other dimensional parameters.

[0058] Reference Figure 6 In some embodiments of this application, the slide 102 includes a first plate 1024, a second plate 1025, and a third plate 1026. The first plate 1024 covers the upper end of the bottom shell 101 of the air box and has a first mounting opening. The edge of the third plate 1026 abuts against the inner wall of the bottom shell 101 of the air box and is fitted to the lower end face of the first plate 1024. The third plate 1026 has a second mounting opening aligned with the first mounting opening. The thickness of the second plate 1025 is greater than that of the first plate 1024. The second plate 1025 is embedded in the first and second mounting openings and remains flush with the upper surface of the first plate 1024. The second plate 1025 has an air outlet 1022. With the structural configuration of this embodiment, the thickness of the slide 102 at the fitting position of the bottom shell 101 can be increased by the third plate 1026, thereby improving the installation stability of the second plate 1025. Since the wind exerts significant pressure on the second plate 1025 when it exits from the air outlet 1022, the structural design of this embodiment can improve the stability of the air outlet 1022. At the same time, increasing the thickness can prevent the second plate 1025 and the first plate 1024 from deforming under wind pressure.

[0059] Reference Figures 5 to 8 In some embodiments of this application, the air knife assembly 100 further includes a separation box 104. The horizontal height of the separation box 104 is lower than that of the bottom shell 101 of the air box. One end of the air supply pipe 103 is connected to the bottom of the bottom shell 101 of the air box, and the other end is connected to the upper end of the separation box 104. A third drain pipe is provided at the bottom of the separation box 104.

[0060] During operation, the air supply structure delivers air into the separator 104, then through the air supply duct 103 into the bottom shell 101 of the air box, and finally out through the air outlet 1022. The separator 104 and the bottom shell 101 ensure multiple uniform airflow distribution, guaranteeing the uniformity of the airflow from the outlet 1022. Simultaneously, rinsing water entering from the outlet 1022 is discharged into the separator 104 through the air supply duct 103 and then out through the third drain pipe at the bottom of the separator 104. The opening and closing of the third drain pipe can be controlled by a liquid level; for example, the drain pipe can be opened only after a certain amount of water has accumulated in the separator 104 or the third drain pipe, preventing airflow leakage from the third drain pipe.

[0061] The embodiments of this application also propose a tableware washing device, including the aforementioned air knife drainage system. It is understood that in this embodiment, after the rinsing water enters the air knife assembly 100, it can be discharged into the water tank 200 for collection, preventing the rinsing water from accumulating inside the air knife assembly 100 and affecting airflow. This solves the problem of rinsing water entering the air knife, which is beneficial for ensuring the drying effect on the tableware and improving drying efficiency.

[0062] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.

Claims

1. An air-knife drain system characterized by, The wind knife drainage system comprises: a wind knife assembly for upward air supply to form a wind knife; a water tank connected to the wind knife assembly for collecting cleaning water entering the wind knife assembly, a bottom of the water tank being provided with an openable and closable drainage mechanism.

2. The air knife drain system of claim 1, wherein, The wind knife drainage system is provided with a plurality of wind knife assemblies, and the water tank is provided with a plurality of chambers in a horizontal direction and in parallel, the bottoms of the plurality of chambers being communicated with each other. The plurality of chambers are connected to the plurality of wind knife assemblies in one-to-one correspondence.

3. The air knife drain system of claim 2, wherein, The drainage mechanism comprises: a first drainage pipe connected to the bottom of each chamber; a control valve provided on the first drainage pipe for controlling opening and closing of the first drainage pipe; a water level monitor provided on the chamber for monitoring the water level in the chamber; a controller connected to the water level monitor and the control valve for opening the control valve when the water level in the chamber reaches a set water level.

4. The air knife drain system of claim 1, wherein, An overflow pipe is connected to an upper end of the water tank, and the overflow pipe and the water tank are communicated through an overflow hole with a hole diameter of 0.1 mm to 5 mm.

5. The air knife drain system of claim 1, wherein, The wind knife assembly comprises: a wind box bottom shell connected with an air supply pipeline; a slide plate provided at an upper end of the wind box bottom shell and inclined relative to the horizontal direction, the slide plate being provided with an air outlet.

6. The air knife drain system of claim 5, wherein, The wind knife assembly further comprises a separation tank with a horizontal height lower than the wind box bottom shell, the air supply pipeline being connected between the wind box bottom shell and the separation tank, and the water tank being connected to a bottom of the separation tank.

7. The air knife drain system of claim 5, wherein, The slide plate is further provided with a first drainage opening, a lower end surface of the slide plate being provided with a drainage groove plate located in the wind box bottom shell and defining a drainage ditch communicating with the first drainage opening.

8. The air knife drain system of claim 7, wherein, The drainage groove plate is connected with a second drainage pipe extending to an outside of the wind box bottom shell.

9. The air knife drain system of claim 5, wherein, Along the inclination direction of the slide plate, both ends of the slide plate are outwardly protruding relative to the wind box bottom shell, and the outwardly protruding part of the slide plate relative to the wind box bottom shell is provided with a second drainage opening.

10. A tableware cleaning apparatus characterized by comprising: The wind knife drainage system comprises any one of claims 1 to 9.

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