Wine bottle cleaning device

By designing a wine bottle cleaning device that combines multi-angle water spraying, rotating brushing, and hot air drying, the problem of traditional cleaning devices being unable to thoroughly clean the inside and outside of wine bottles has been solved. This achieves efficient cleaning and drying, improves cleaning efficiency, and reduces environmental pollution.

CN224168261UActive Publication Date: 2026-04-28LIU LINGZUI BREWING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
LIU LINGZUI BREWING CO LTD
Filing Date
2025-05-30
Publication Date
2026-04-28

AI Technical Summary

Technical Problem

Traditional bottle cleaning devices are inefficient at thoroughly cleaning the inside and outside of bottles, especially the neck and bottom.

Method used

Design a wine bottle cleaning device that includes a cleaning tank, cleaning rods, a water pump, a rotating motor, and fixing components. Through multi-angle water spraying, rotating brushing, and hot air drying, combined with a telescopic rod to fix the wine bottle, it can achieve all-round cleaning and rapid drying.

Benefits of technology

It achieves comprehensive cleaning of both the inside and outside of wine bottles, significantly improving the cleaning effect, shortening the cleaning and drying time, increasing work efficiency, and centrally treating wastewater, which meets environmental protection requirements.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a wine bottle cleaning device which comprises a machine frame, a mounting plate is fixed at the top end of the machine frame, a cleaning assembly comprises a cleaning tank, a cleaning rod, a water pump and a rotating motor, a plurality of mounting holes are formed in the mounting plate, the cleaning tank is arranged at the mounting holes and rotationally connected with the mounting plate, the cleaning rod is fixed at the bottom of the cleaning tank, and the water pump is connected with the cleaning rod. A plurality of sprayers are arranged on the cleaning rod and the side wall of the cleaning tank, the water pump is fixed to the side end of the rack, one end of the water pump is communicated with an external water source, the other end of the water pump is communicated with the sprayers through water pipes, a plurality of L-shaped fixing rods are fixed to the side wall of the cleaning tank, a plurality of bristles are installed on the fixing rods, and a plurality of water through holes are formed in the bottom of the cleaning tank and the bottom of the cleaning rod; a plurality of air blowing holes are formed in the cleaning rod and communicate with the hot air assembly through air pipes; the sprayers on the side wall of the cleaning tank and the cleaning rod spray water at multiple angles, and the wine bottles can be cleaned in all directions and multiple angles in cooperation with brushing of the bristles.
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Description

Technical Field

[0001] This utility model relates to the field of liquor processing and production technology, and in particular to a liquor bottle cleaning device. Background Technology

[0002] In the production process of alcoholic beverages, the bottles need to be cleaned inside and out and disinfected before bottling to provide packaging containers that meet hygiene and usage requirements for the bottling process. Traditionally, bottle cleaning is done manually with brushes to clean the bottle mouth and bottom, which is not only time-consuming and labor-intensive, but also has inconsistent cleaning results and low efficiency due to manual operation. To improve efficiency, a series of bottle washing machines have emerged on the market. The structure of the bottle washing machine commonly used in alcoholic beverage factories is that a cleaning tray is installed above the cleaning workbench, and the outer edge of the cleaning tray is equipped with spray nozzles. When the drive mechanism moves the bottles, which are inverted on the conveyor belt, past the cleaning tray, the spray nozzles on the cleaning tray spray out clean water to clean the inside of the bottles. Although this cleaning device saves time and labor, due to the small bottle mouth and low pressure of the spray nozzles, it is difficult for the water sprayed from the spray nozzles to clean the bottom of the bottles, resulting in poor cleaning effect. In particular, it is difficult to remove those sticky or strongly adhesive impurities attached to the inside of the bottles, which seriously affects the quality of the product.

[0003] Therefore, there is an urgent need for a bottle cleaning device that can thoroughly clean both the inside and outside of wine bottles. Utility Model Content

[0004] The purpose of this invention is to provide a wine bottle cleaning device to solve the above-mentioned problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A wine bottle cleaning device includes a frame, an mounting plate fixed to the top of the frame, a plurality of cleaning components arranged on the mounting plate, and a water collection tank arranged below the frame, the water collection tank being connected to an external sewage tank.

[0007] A fixing assembly, wherein multiple fixing assemblies are disposed above the frame, and each fixing assembly corresponds to a cleaning assembly;

[0008] The cleaning assembly includes a cleaning tank, a cleaning rod, a water pump, and a rotating motor. Multiple mounting holes are provided on the mounting plate. The cleaning tank is positioned at one of the mounting holes and rotatably connected to the mounting plate. A cleaning rod is fixed to the bottom of the cleaning tank. Multiple nozzles are provided on the cleaning rod and on the side wall of the cleaning tank. The water pump is fixed to the side of the frame. One end of the water pump is connected to an external water source, and the other end is connected to the nozzles via a water pipe. A groove for embedding a wine bottle neck is provided at the bottom of the cleaning tank. Multiple "L"-shaped fixing rods are fixed to the side wall of the cleaning tank, and multiple brush bristles are installed on the fixing rods. Multiple water passage holes are provided at the bottom of the cleaning tank and the bottom of the cleaning rod. The rotating motor is fixed to the bottom of the frame, and its output end is fixedly connected to the bottom of the cleaning tank.

[0009] The drying component has multiple air holes on the cleaning rod, and the air holes are connected to the hot air component through air pipes.

[0010] Furthermore, the fixing assembly includes a telescopic rod, a telescopic motor, and a fixing plate. Columns are fixed at the four corners of the top of the frame, and fixing plates are fixed at the top of the four columns. The telescopic motor is fixed to the fixing plate, and a gear is fixed to the output end of the telescopic motor. The telescopic rod passes through the fixing plate and is slidably connected to the fixing plate. A rack that meshes with the gear is provided on one side of the telescopic rod, and a fixing block is fixed to the bottom end of the telescopic rod. The bottom end of the fixing block abuts against the wine bottle.

[0011] Furthermore, a silicone pad is fixed to the bottom end of the fixing block, and the silicone pad abuts against the wine bottle.

[0012] Furthermore, sliders are fixed on both sides of the telescopic rod near the rack, and a through hole is provided on the fixing plate for the telescopic rod to pass through. A groove is provided at the through hole of the fixing plate for the slider to slide. The rack does not contact the fixing plate.

[0013] Furthermore, a protective pad is laid inside the groove.

[0014] Furthermore, the rotating motor is covered with a waterproof cover.

[0015] Furthermore, the hot air assembly includes a wind box, a fan, and a heating rod. The fan is installed inside the wind box, the heating rod is fixed in the wind box, and the heating rod is located at the air outlet of the fan. The air blowing hole is connected to the wind box through the air pipe.

[0016] This utility model discloses the following technical effects: It provides a wine bottle cleaning device. The nozzles on the sidewalls of the cleaning tank and the cleaning rod spray water at multiple angles. Combined with the rotation of the cleaning tank and the brushing action, this allows for comprehensive and multi-angle cleaning of the wine bottle, effectively removing stains and significantly improving the cleaning effect. A gear and rack transmission drives a telescopic rod to press down and fix the wine bottle, resulting in a simple structure and stable fixation. The silicone pad prevents the bottle from being scratched or damaged during fixing, ensuring its integrity. The hot air assembly blows hot air into the bottle through the air holes on the cleaning rod, achieving rapid drying of the bottle's interior, improving the overall efficiency of the cleaning device and shortening the bottle cleaning and drying time. The water collection tank is connected to an external sewage tank, enabling timely collection of wastewater generated during the cleaning process, preventing wastewater from flowing everywhere, facilitating centralized treatment, and meeting environmental protection requirements. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 : A schematic diagram of the structure of a wine bottle cleaning device according to this utility model;

[0019] Figure 2 Top view of the cleaning component of this utility model;

[0020] Figure 3 : Schematic diagram of the telescopic rod and gear structure of this utility model;

[0021] Figure 4 : Schematic diagram of the telescopic rod structure of this utility model;

[0022] Figure 5 : Schematic diagram of the fixing plate structure of this utility model;

[0023] Figure 6 : Schematic diagram of the hot air assembly structure of this utility model;

[0024] Figure 7 : Schematic diagram of the frame structure of this utility model;

[0025] Figure 8 This utility model Figure 1 Enlarged view of point A in the middle;

[0026] Specifically, the components are: 1. Frame; 2. Mounting plate; 3. Water collection tank; 4. Cleaning tank; 5. Cleaning rod; 6. Water pump; 7. Rotary motor; 8. Mounting hole; 9. Nozzle; 10. Groove; 11. Fixing rod; 12. Brush bristles; 13. Water passage hole; 14. Waterproof cover; 15. Air blowing hole; 16. Telescopic motor; 17. Telescopic rod; 18. Fixing plate; 19. Gear; 20. Rack; 21. Fixing block; 22. Silicone pad; 23. Slider; 24. Through hole; 25. Slide; 26. Air box; 27. Fan; 28. Heating rod; 29. ​​Square frame; 30. Support column; 31. Horizontal plate; 32. Support plate; 33. Vertical column. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] The specific implementation method is as follows:

[0030] like Figures 1-8 As shown; this utility model discloses a wine bottle cleaning device, including a frame 1, an mounting plate 2 fixed at the top of the frame 1, multiple cleaning components arranged on the mounting plate 2, and a water collection tank 3 arranged below the frame 1, which is connected to an external sewage tank.

[0031] Fixing components: Multiple fixing components are installed above the frame 1, with each fixing component corresponding to a cleaning component.

[0032] The cleaning assembly includes a cleaning tank 4, a cleaning rod 5, a water pump 6, and a rotating motor 7. Multiple mounting holes 8 are provided on the mounting plate 2. The cleaning tank 4 is positioned at the mounting holes 8 and rotatably connected to the mounting plate 2. The cleaning rod 5 is fixed to the bottom of the cleaning tank 4. Multiple nozzles 9 are provided on the cleaning rod 5 and the side wall of the cleaning tank 4. The water pump 6 is fixed to the side of the frame 1. One end of the water pump 6 is connected to an external water source, and the other end is connected to the nozzles 9 via a water pipe. A groove 10 for embedding a wine bottle neck is provided at the bottom of the cleaning tank 4. Multiple "L"-shaped fixing rods 11 are fixed to the side wall of the cleaning tank 4, and multiple bristles 12 are installed on the fixing rods 11. Multiple water passage holes 13 are provided at the bottom of the cleaning tank 4 and the bottom of the cleaning rod 5. The rotating motor 7 is fixed to the bottom of the frame 1, and the output end of the rotating motor 7 is fixedly connected to the bottom of the cleaning tank 4.

[0033] The drying component has multiple air holes 15 on the cleaning rod 5, and the air holes 15 are connected to the hot air component through air pipes.

[0034] In this embodiment, the water pipe includes a main water pipe and multiple branch water pipes, and the air pipe includes a main air pipe and multiple branch air pipes. One end of the main water pipe is connected to the water pump 6, and the other end is connected to one end of the multiple branch water pipes. The other end of the branch water pipes is connected to the nozzles 9, and the branch water pipes correspond one-to-one with the nozzles 9. One end of the main air pipe is connected to the hot air assembly, and the other end is connected to one end of the multiple branch air pipes. The other end of the branch air pipes is connected to the air blowing holes 15, and the branch air pipes correspond one-to-one with the air blowing holes 15.

[0035] The rotating motor 7 is set to operate at a frequency of one second forward and one second reverse. Since there are multiple water pipes and air pipes, this rotation frequency prevents the main water pipe, branch water pipe, main air pipe, and branch air pipe from getting tangled when rotating in one direction continuously.

[0036] In this embodiment, the cleaning rod 5 has a hollow cavity inside and a water passage hole 13 at the bottom. Wastewater from cleaning the inside of the bottle flows into the hollow cavity through the water passage hole of the cleaning rod 5, and then flows into the water collection tank 3 through the water passage hole 13 at the bottom of the cleaning tank 4. Wastewater from cleaning the outside of the bottle can flow into the water collection tank 3 through the water passage hole 13 at the bottom of the cleaning tank. In this embodiment, the water passage hole 13 at the bottom of the cleaning rod 5 is an arc-shaped hole, with the bottom end of the arc-shaped hole located at the bottom end of the cleaning rod 5, which facilitates the flow of wastewater and prevents it from remaining in the hollow cavity. The water passage hole 13 located at the bottom end of the cleaning rod 5 and located at the bottom of the cleaning tank 4 is an oblique through hole, which facilitates the flow of wastewater without affecting the rotating motor 7. The remaining water passage holes 13 are cylindrical holes.

[0037] In this embodiment, the bristles 12 can also be replaced with a sponge to clean the bottle. The lengths of the bristles 12 and the sponge can also be set to facilitate cleaning the entire bottle or only a part of it.

[0038] When placing a wine bottle, the bottle mouth is embedded into the groove 10 at the bottom of the cleaning tank 4. The fixing component is activated, and the wine bottle is firmly fixed through mechanical transmission, preventing the wine bottle from shaking, shifting, or even tipping over during the cleaning process. A flexible contact method is used to prevent damage to the surface of the wine bottle. After the water pump 6 is started, it draws external water, which is delivered through the main water pipe to the branch water pipe and then to the nozzles 9 on the side wall of the cleaning rod 5 and the cleaning tank 4, spraying water from different angles to rinse the wine bottle. At the same time, the rotating motor 7 drives the cleaning tank 4 to rotate. Since the wine bottle is fixed, the bristles 12 on the rotating fixing rod 11 brush the surface of the wine bottle in all directions, realizing simultaneous cleaning of the inside and outside of the wine bottle, improving cleaning efficiency. The wastewater generated during cleaning flows into the water collection tank 3 through the water holes 13 at the bottom of the cleaning tank 4 and the cleaning rod 5, and then into the external sewage pool, realizing centralized collection and treatment of wastewater and reducing environmental pollution. After cleaning, the hot air component is activated, and the generated hot air goes through the main air pipe to the branch air pipe and then into the air blowing hole 15 of the cleaning rod 5 to dry the inside of the wine bottle, completing the entire cleaning and drying process.

[0039] Secondly, in actual use, the number of cleaning tanks 4, the number of fixed components, the number of nozzles 9, the number of air holes 15, and the number of fixing rods 11 can be set according to the actual situation to clean the wine bottles.

[0040] In this embodiment, the fixing assembly includes a telescopic rod 17, a telescopic motor 16, and a fixing plate 18. Columns 33 are fixed at the four corners of the top of the frame 1, and a fixing plate 18 is fixed at the top of the four columns 33. The telescopic motor 16 is fixed on the fixing plate 18, and a gear 19 is fixed at the output end of the telescopic motor 16. The telescopic rod 17 passes through the fixing plate 18 and is slidably connected to the fixing plate 18. A rack 20 that meshes with the gear 19 is provided on one side of the telescopic rod 17. A fixing block 21 is fixed at the bottom of the telescopic rod 17, and the bottom end of the fixing block 21 abuts against the wine bottle.

[0041] After the motor of this utility model is started, the gear 19 at its output end rotates accordingly. Since the telescopic rod 17 has a rack 20 that meshes with the gear 19 on one side, the rotation of the gear 19 is converted into the linear motion of the telescopic rod 17 through inter-tooth meshing. The telescopic rod 17 passes through the fixed plate 18 and is slidably connected to the fixed plate 18. Under the constraint of the fixed plate 18, it extends and retracts smoothly along the set direction. The columns 33 at the four corners of the top of the frame 1 support the fixed plate 18. When the telescopic motor 16 drives the telescopic rod 17 to move downward, the fixing block 21 fixed at the bottom of the telescopic rod 17 descends accordingly until it contacts the wine bottle placed on the washing tank 4 and applies pressure, thereby fixing the wine bottle in the groove 10. When it is necessary to remove the wine bottle, the telescopic motor 16 rotates in the opposite direction, driving the telescopic rod 17 to rise and releasing the fixing constraint on the wine bottle.

[0042] In this embodiment, a silicone pad 22 is fixed at the bottom of the fixing block 21, and the silicone pad 22 abuts against the wine bottle.

[0043] This utility model features a soft silicone pad 22 with excellent elasticity. When securing a wine bottle, it adheres tightly to the bottle surface, preventing friction and pressure caused by direct contact between hard materials and the bottle, effectively preventing scratches, wear, or cracks on the bottle surface.

[0044] In this embodiment, sliders 23 are fixed on both sides of the telescopic rod 17 near the rack 20. A through hole 24 for the telescopic rod 17 to pass through is provided on the fixing plate 18. A groove 25 for the slider 23 to slide is provided at the through hole 24 of the fixing plate 18. The rack 20 does not contact the fixing plate 18.

[0045] The cooperation between the slider 23 and the groove 25 of this utility model provides precise guidance for the telescopic movement of the telescopic rod 17, restricting the telescopic rod 17 to move only in the set direction, effectively preventing the telescopic rod 17 from deviating, shaking or twisting during the movement, and ensuring its smooth operation.

[0046] In this embodiment, a protective pad is laid in the groove 10; the protective pad is made of sponge or felt.

[0047] The protective pad of this utility model is soft. When the wine bottle is placed in the groove 10, the protective pad can buffer the impact between the bottom of the wine bottle and the groove 10, and prevent the bottom of the wine bottle from directly contacting the hard surface of the groove 10 to avoid scratches and damage. The surface of the protective pad has a certain friction, which can increase the coefficient of friction between the wine bottle and the groove 10, making it difficult for the wine bottle to slide in the groove 10.

[0048] In this embodiment, the rotating motor 7 is covered with a waterproof cover 14.

[0049] In this embodiment, the frame 1 includes a square frame 29 and support columns 30. Support columns 30 are fixed at the bottom of the four corners of the frame. The four support columns 30 are arranged as one, two, three, and four. A horizontal plate 31 is fixed between support column 30 one and support column 30 two, and a horizontal plate 31 is fixed between support column 30 three and support column 30 four. The two horizontal plates 31 are arranged in parallel. Multiple support plates 32 are fixed between the two horizontal plates 31. The support plates 32 are used to fix the rotating motor 7 and the waterproof cover 14.

[0050] The waterproof cover 14 of this utility model can effectively prevent water from entering the motor, avoiding problems such as short circuits and reduced insulation performance caused by water ingress, thereby protecting the normal operation and electrical performance of the motor and ensuring long-term stable operation of the motor.

[0051] In this embodiment, the hot air assembly includes a wind box 26, a fan 27, and a heating rod 28. The fan 27 is installed inside the wind box 26, and the heating rod 28 is fixed in the wind box 26 and located at the air outlet of the fan 27. The air blowing hole 15 is connected to the wind box 26 through an air pipe.

[0052] The blower 27 of this utility model continuously sends air into the air box 26. When the air passes through the heating rod 28, it is rapidly heated. The hot air is blown out through the air pipe from the air hole 15 of the cleaning rod 5 and directly acts on the inside of the wine bottle. This design can achieve directional and efficient delivery of hot air, quickly remove the moisture inside the wine bottle, and greatly shorten the drying time. Compared with traditional natural air drying or simple air drying, it greatly improves the drying efficiency and ensures that the cleaned wine bottle can quickly enter the next process.

[0053] In practical use, the bottle cleaning device of this utility model places the bottle in the cleaning tank 4 with the bottle mouth aligned with the groove 10. The telescopic motor 16 drives the gear 19 and rack 20 to drive the telescopic rod 17 to press down the fixing plate 18, and the bottle is fixed by the silicone pad 22. The water pump 6 delivers water to the nozzle 9 to rinse the bottle. The rotating motor 7 drives the cleaning tank 4 to rotate in a sequence of one second to the left and one second to the right, which, together with the brush bristles 12, cleans the bottle inside and out, enhancing the cleaning effect. The sewage flows into the water collection tank 3 through the water hole 13 and is discharged. The fan 27 of the hot air assembly heats the air and blows it through the air hole 15 of the cleaning rod to dry the inside of the bottle, completing the entire cleaning and drying process.

[0054] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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 utility model 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 utility model.

[0055] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0056] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A wine bottle cleaning device, characterized in that: include; A frame, with a mounting plate fixed at the top of the frame, multiple cleaning components on the mounting plate, and a water collection tank below the frame, the water collection tank being connected to an external sewage tank; A fixing assembly, wherein multiple fixing assemblies are disposed above the frame, and each fixing assembly corresponds to a cleaning assembly; The cleaning assembly includes a cleaning tank, a cleaning rod, a water pump, and a rotating motor. Multiple mounting holes are provided on the mounting plate. The cleaning tank is positioned at one of the mounting holes and rotatably connected to the mounting plate. A cleaning rod is fixed to the bottom of the cleaning tank. Multiple nozzles are provided on the cleaning rod and on the side wall of the cleaning tank. One end of the water pump is connected to an external water source, and the other end is connected to the nozzles via a water pipe. A groove for embedding a wine bottle neck is provided at the bottom of the cleaning tank. Multiple "L"-shaped fixing rods are fixed to the side wall of the cleaning tank, and multiple brush bristles are installed on the fixing rods. Multiple water passage holes are provided at the bottom of the cleaning tank and the bottom of the cleaning rod. The rotating motor is fixed to the bottom of the frame, and its output end is fixedly connected to the bottom of the cleaning tank. The drying component has multiple air holes on the cleaning rod, and the air holes are connected to the hot air component through air pipes.

2. The wine bottle cleaning device according to claim 1, characterized in that: The fixing assembly includes a telescopic rod, a telescopic motor, and a fixing plate. Columns are fixed at the four corners of the top of the frame, and fixing plates are fixed at the top of the four columns. The telescopic motor is fixed to the fixing plate, and a gear is fixed to the output end of the telescopic motor. The telescopic rod passes through the fixing plate and is slidably connected to the fixing plate. A rack that meshes with the gear is provided on one side of the telescopic rod. A fixing block is fixed to the bottom end of the telescopic rod, and the bottom end of the fixing block abuts against the wine bottle.

3. The wine bottle cleaning device according to claim 2, characterized in that: A silicone pad is fixed to the bottom of the fixing block, and the silicone pad abuts against the wine bottle.

4. The wine bottle cleaning device according to claim 2, characterized in that: The telescopic rod is fixed with sliders on both sides near the rack. The fixed plate has through holes for the telescopic rod to pass through, and a groove for the slider to slide in the through holes of the fixed plate. The rack does not contact the fixed plate.

5. The wine bottle cleaning device according to claim 1, characterized in that: A protective pad is laid inside the groove.

6. The wine bottle cleaning device according to claim 1, characterized in that: The rotating motor is covered with a waterproof cover.

7. The wine bottle cleaning device according to claim 1, characterized in that: The hot air assembly includes a wind box, a fan, and a heating rod. The fan is installed inside the wind box, and the heating rod is fixed in the wind box and located at the air outlet of the fan. The air blowing hole is connected to the wind box through the air pipe.