An automatic cleaning fixed-slot mahjong machine

Abstract

This utility model relates to the field of mahjong machines, specifically an automatic cleaning mahjong machine with a fixed number of tiles. An air compressor generates compressed air, which drives dry cleaning powder in a raw material storage bin. The dry cleaning powder is sprayed into the large tray area through nozzles. During the shuffling process, the dry cleaning powder chemically cleans the mahjong tiles, while a cleaning brush on a scraper performs physical cleaning. This combination of physical and chemical methods cleans the tiles simultaneously during shuffling. Waste from the dry cleaning powder is blocked by a barrier and collected in a waste collection trough as the tray rotates. The entire cleaning process is seamlessly integrated into the shuffling process, eliminating the need for a separate cleaning step. The use of dry cleaning powder also eliminates the need for water washing, simplifying the mahjong machine's structure and sealing requirements, and reducing the risk of water and electrical safety accidents. This mahjong machine has a simple structure, is easy to use, and provides excellent results.

Description

Technical Field

[0001] This utility model relates to the field of mahjong machines, and in particular to an automatic cleaning mahjong machine with a fixed number of tiles. Background Technology

[0002] Traditional mahjong machines only have a lifting platform for raising and lowering the tiles, rolling dice, and adjusting tile parameters. For the fixed-suit mahjong rules specific to the Sichuan and Chongqing regions, players typically have to rely on memorizing or asking their partners about the fixed suits for each position. In contrast, online mahjong (such as computer mahjong or mobile mahjong) displays the player's fixed suits directly on the UI, while traditional mahjong machines lack this feature, which is inconvenient.

[0003] Traditional mahjong machines can only shuffle the tiles, lacking a cleaning function. However, sweat and tea stains from players' hands can easily contaminate the tiles and cause cross-contamination, necessitating frequent cleaning. Traditional cleaning methods require removing both sets of mahjong tiles from the machine, cleaning them separately, and then manually placing them back in, making the process cumbersome. Utility Model Content

[0004] The purpose of this utility model is to provide an automatic cleaning mahjong machine that addresses the problem that cleaning mahjong tiles in traditional mahjong machines requires removing both sets of mahjong tiles from the machine compartment, cleaning them separately, and then manually placing them back into the machine compartment, which is a complicated process.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An automatic cleaning mahjong machine with a fixed number of tiles includes a control panel, a large plate, and a rotating shaft. The rotating shaft and the large plate are located inside the mahjong machine. The large plate is rotatable around the rotating shaft. The control panel is located on the top surface of the rotating shaft, which is capable of lifting and lowering. The machine also includes:

[0007] A raw material storage bin is located inside the mahjong machine, and the raw material storage bin contains dry cleaning powder;

[0008] Several nozzles are provided on the rotating shaft and located above the large plate, and the nozzles are connected to the raw material storage bin;

[0009] An air compressor is installed inside the mahjong machine. The air compressor is connected to the raw material storage bin. The air compressor drives the dry cleaning powder in the raw material storage bin to be sprayed into the large plate area through the spray hole using compressed air.

[0010] Several scraping strips are attached to the large plate and fixedly connected to the rotating shaft. Each scraping strip is equipped with a cleaning brush. The scraping strips scrape the mahjong tiles while simultaneously cleaning them.

[0011] A barrier is provided at the outer edge of the large plate to limit the area where the dry cleaning powder is used. At least one waste collection trough is provided around the barrier to collect the waste material after the dry cleaning powder is used.

[0012] This invention relates to an automatic cleaning mahjong machine with a fixed number of tiles. Compressed air is generated by an air compressor and used to drive dry cleaning powder in the raw material storage bin. The dry cleaning powder is sprayed into the large tray area through the nozzle. During the shuffling process, the dry cleaning powder chemically cleans the mahjong tiles, while the cleaning brush on the scraper performs physical cleaning. This combined physical and chemical cleaning method cleans the mahjong tiles simultaneously during shuffling. Waste from the dry cleaning powder is blocked by the enclosure and collected in the waste collection trough by the rotating large tray for recycling. The entire cleaning process is seamlessly integrated into the shuffling process, eliminating the need for a separate cleaning step. The use of dry cleaning powder also eliminates the need for water washing, simplifying the mahjong machine's structure and sealing requirements, and reducing the risk of water and electrical safety accidents. This mahjong machine has a simple structure, is easy to use, and provides excellent results.

[0013] Preferably, a desiccant compartment is provided next to the raw material storage compartment.

[0014] Preferably, the top of the raw material storage silo is connected to a sealing cover, and the sealing cover is equipped with a one-way valve and a sensor.

[0015] Preferably, the rotating shaft is connected to the raw material storage bin via a conveying pipe, the top of the conveying pipe is connected to the ejection hole, and the bottom of the conveying pipe extends into the bottom of the raw material storage bin.

[0016] Preferably, the air compressor is connected to a throttle valve, the throttle valve is connected to a filter, and the filter is connected to the raw material storage bin via an air supply pipe.

[0017] More preferably, the filter is equipped with a water-air separator, and the drain valve of the water-air separator is located outside the filter.

[0018] Preferably, the large plate is provided with several sound-absorbing holes.

[0019] Preferably, the edge of the large disc is configured as a driven rack, and a drive gear is provided in one of the waste collection troughs. The drive gear meshes with the driven rack, and the drive gear is connected to a drive motor.

[0020] Preferably, the dry cleaning powder is baking soda or sodium sesquicarbonate powder.

[0021] Preferably, each of the four sides of the mahjong machine is provided with three fixed-suit input buttons, and the three fixed-suit input buttons for each side correspond to the suits of the mahjong machine. The control panel is provided with a dice button for each of the four sides of the mahjong machine. A display screen is embedded in the dice button and the display screen is used to display the fixed-suit input button activated in the corresponding position.

[0022] With this structural design, players can press the corresponding "circles," "bamboo," and "characters" input buttons to display the corresponding input results on the dice buttons. This makes it easy for each player to view the results, allowing them to rely on their own memory or ask their partners for the fixed suits for each position, thus improving the gaming experience.

[0023] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0024] 1. The present invention discloses an automatic cleaning mahjong machine with fixed-slot design. Compressed air is generated by an air compressor, which drives dry cleaning powder in the raw material storage bin. The dry cleaning powder is sprayed into the large tray area through the spray nozzle. During the shuffling process, the mahjong tiles are chemically cleaned by the dry cleaning powder, and simultaneously physically cleaned by the cleaning brush on the scraper strip. This combines physical and chemical methods to clean the mahjong tiles during the shuffling process. Waste from the dry cleaning powder is blocked by the enclosure and collected in the waste collection trough by the rotating large tray for recycling. The entire cleaning process is perfectly integrated into the shuffling process, eliminating the need for a separate cleaning step. The use of dry cleaning powder also eliminates the need for water washing, simplifying the mahjong machine's structure and sealing requirements, reducing the risk of water and electricity safety accidents. This mahjong machine has a simple structure, is easy to use, and has good performance.

[0025] 2. This utility model preferably provides an automatic cleaning mahjong machine with a fixed suit. Each of the four sides of the mahjong machine has three fixed suit input buttons, corresponding to the suits of "circles," "bamboo," and "characters." The control panel has a dice button for each of the four sides of the mahjong machine, and a display screen is embedded in each dice button. The display screen is used to display the fixed suit input button activated for the corresponding side. Players can press the fixed suit input button corresponding to "circles," "bamboo," or "characters" to display the corresponding input result on the dice button, which is convenient for each player to view. Relying on players' memory or asking their partners for the fixed suit of each side improves the gaming experience. Attached Figure Description

[0026] Figure 1 This is a top view of the structure of a mahjong machine;

[0027] Figure 2 A schematic diagram of the planar structure of the input button for the fixed position;

[0028] Figure 3 This is a top view of the control panel.

[0029] Figure 4 A top view diagram illustrating the use and recycling structure of dry cleaning powder;

[0030] Figure 5 This is a schematic diagram of the main structure of the market index.

[0031] Figure 6 This is a schematic diagram of the elevation structure of a mahjong machine;

[0032] Figure 7 This is a schematic diagram of the elevation structure of the dry cleaning powder output structure.

[0033] The diagram is labeled as follows: 1-Control panel, 11-Dice button, 12-Dice compartment, 13-Lifting control button, 14-Position and card type adjustment display, 2-Fixed slot input button, 3-Large panel, 31-Scraping strip, 32-Silencer hole, 33-Flipping block, 34-Driven rack, 35-Drive gear, 351-Drive motor, 36-Enclosure, 37-Waste collection trough, 38-Waste collection channel, 39-Waste storage bin, 4-Rotating shaft, 41-Spray hole, 42-Conveying pipe, 5-Raw material storage bin, 51-Desiccant bin, 52-Sealing cover, 53-One-way valve, 54-Sensor, 6-Air compressor, 61-Throttle valve, 62-Filter, 63-Drain valve, 64-Air supply pipe, 7-Wire harness compartment. Detailed Implementation

[0034] The present invention will be further described in detail below with reference to experimental examples and specific embodiments. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present invention to the following embodiments. All technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0035] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0036] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0037] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0038] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0039] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0040] Example 1

[0041] like Figures 1 to 7 As shown, the present invention provides an automatic cleaning mahjong machine with a fixed suit, which adds automatic cleaning and suit display functions to the traditional mahjong machine.

[0042] Traditional mahjong machines include a body, a controller, a control panel 1, a large plate 3 and a rotating shaft 4. The rotating shaft 4 and the large plate 3 are arranged inside the body of the mahjong machine. The large plate 3 can rotate around the rotating shaft 4. The control panel 1 is arranged on the top surface of the rotating shaft 4. The rotating shaft 4 can be lifted. After the rotating shaft 4 is lifted, the control panel 1 is raised relative to the tabletop, exposing the mahjong tile recovery channel. Players can push the mahjong tiles through the recovery channel into the interior of the mahjong machine for shuffling and walling the tiles.

[0043] As Figure 1 and Figure 3 shown, the control panel 1 is electrically connected to the controller, and the controller can be a PLC or the main board of the mahjong machine. Usually, a dice bin 12 is provided at the center of the control panel 1, and there are two dice in the dice bin 12. The four directions of the mahjong machine on the control panel 1 are usually marked as "east, south, west, north", and there is a dice button 11 at each of the four directions. Generally, the player in the dealer position presses the corresponding dice button 11 to make the two dice in the dice bin 12 jump to select the points. Usually, lift control buttons 13 are provided at a pair of corresponding diagonal positions on the control panel 1. When the player presses the lift control buttons 13, the rotating shaft 4 drives the control panel 1 to rise from the tabletop, exposing the recovery channel, and the mahjong tiles can be recovered. After completion, the lift control buttons 13 are pressed again, and the rotating shaft 4 drives the control panel 1 to descend to be flush with the tabletop. Then, a dealer position and hand type adjustment display 14 is usually provided at a diagonal position on the control panel 1.

[0044] Based on this, the improvement of the mahjong machine in the first aspect of this embodiment is to display the fixed discard, and the specific implementation method is as Figure 3 shown. The size of the traditional dice button 11 is enlarged, and a display screen is embedded therein. As Figure 1 shown, three fixed discard input buttons 2 are respectively provided on each of the four sides of the mahjong machine. As Figure 2 shown, the three fixed discard input buttons 2 on each side respectively correspond to "pongs", "soups", "dots (usually in traditional Chinese)". The fixed discard input buttons 2 are electrically connected to the controller, and the controller is electrically connected to the display screen. As Figure 3 shown, the display screen is used to display the fixed discard input buttons 2 activated corresponding to the direction.

[0045] In some optional implementation manners, the fixed discard input button 2 corresponding to "pongs" is configured with a blue LED light, the fixed discard input button 2 corresponding to "soups" is configured with a green LED light, and the fixed discard input button 2 corresponding to "dots" is configured with a red LED light. When the player presses to activate the corresponding fixed discard input button 2, the corresponding LED light lights up.

[0046] In some optional embodiments, the words "Tong", "Tiao", and "Wan" displayed on the display screen also correspondingly represent blue Tong characters, green Tiao characters, and red Wan characters.

[0047] In some optional embodiments, the mahjong machine can be configured such that when the lifting control button 13 is pressed and the control panel 1 rises, the previously selected fixed-suited flowers in each direction are reset, that is, the display on the display screen is cleared and the lights of the fixed-suited input buttons 2 are turned off; when the lifting control button 13 is not pressed and the control panel 1 is flush with the tabletop, the fixed-suited flowers selected by the player are locked, and even if other fixed-suited input buttons 2 are pressed, the selected fixed-suited flowers cannot be modified.

[0048] In some optional embodiments, for a more user-friendly setting, within the set time when the player first presses the fixed-suited input button 2 in this round, other fixed-suited input buttons 2 can be pressed to modify the selected fixed-suited flowers. The set time is configured in the system of the controller. For example, it can be set to 10 seconds, which means that the player can modify the fixed-suited flowers within 10 seconds after first pressing the fixed-suited input button 2 in this round. After exceeding the set time of the system, the fixed-suited flowers corresponding to the last fixed-suited input button 2 pressed by the player are locked, and the player cannot modify the fixed-suited flowers anymore.

[0049] Based on the foregoing, the second aspect improvement of the mahjong machine in this embodiment is automatic cleaning, and the dry cleaning method adopted in this embodiment does not require water. It mainly uses dry cleaning powder to clean the mahjong tiles. The specific implementation method is as Figures 4 to 7 shown.

[0050] As Figure 6 shown, a raw material storage bin 5 is provided inside the support leg of the mahjong machine. The dry cleaning powder is stored in the raw material storage bin 5. The dry cleaning powder can use natural and environmentally friendly mild and weakly alkaline dry materials such as soda powder or sesquicarbonate powder. The dry cleaning powder in the mahjong machine only reacts with water and the moisture in the air. The generated salt itself is heat-resistant and stable, can absorb the moisture of dirt such as sweat stains and tea stains on the surface of the mahjong tiles, and then scrape off the dry stains on the surface of the mahjong tiles through the friction of the salt. That is, the dry cleaning powder can perform cleaning in a chemical + physical manner.

[0051] As Figure 7 shown, a desiccant bin 51 is provided beside the raw material storage bin 5. The desiccant bin 51 has five contact surfaces with the raw material storage bin 5. The contact surfaces are provided with support skeletons and mesh cloth to separate the raw material storage bin 5 and the desiccant bin 51. Desiccants are placed in the desiccant bin 51 to prevent the dry cleaning powder in the raw material storage bin 5 from being affected by moisture and becoming ineffective.

[0052] As Figure 7 As shown, a sealing cover 52 is connected to the top of the raw material storage bin 5. A one-way valve 53 and a sensor 54 are provided on the sealing cover 52. The sensor 54 is used to detect the level of the dry cleaning powder in the raw material storage bin 5 so as to replenish it in time. The sensor 54 is electrically connected to the controller. The one-way valve 53 is used to replenish air into the raw material storage bin 5 after the dry cleaning powder is consumed, so as to avoid the formation of a vacuum in the sealed environment of the raw material storage bin 5, which would cause the dry cleaning powder to be suspended, resulting in an inaccurate level of the dry cleaning powder and difficulty in conveying it.

[0053] like Figures 5 to 7 As shown, a plurality of ejector holes 41 are provided on the rotating shaft 4, and when the control panel 1 is flush with the desktop, the ejector holes 41 are located above the large plate 3. The rotating shaft 4 is connected to the raw material storage chamber 5 through a conveying pipe 42. The top of the conveying pipe 42 is connected to the ejector holes 41, and the bottom of the conveying pipe 42 extends into the bottom of the raw material storage chamber 5.

[0054] like Figure 7 As shown, an air compressor 6 is installed inside the mahjong machine. The air compressor 6 is electrically connected to the controller. The air compressor 6 is connected to a throttle valve 61. The throttle valve 61 is connected to a filter 62. The filter 62 is equipped with a water-air separator. The drain valve 63 of the water-air separator is located outside the filter 62. The filter 62 is connected to the raw material storage chamber 5 through an air supply pipe 64. The air compressor 6 drives the dry cleaning powder in the raw material storage chamber 5 to be sprayed into the large plate 3 area through the spray hole 41 using compressed air. The filter 62 filters the moisture in the compressed air, and the filtered moisture is discharged through the drain valve 63, ensuring that the compressed air entering the raw material storage chamber 5 is dry.

[0055] like Figure 4 and Figure 5 As shown, a plurality of scraping strips 31 are fixedly connected to the rotating shaft 4. The scraping strips 31 are attached to the upper surface of the large plate 3. Each scraping strip 31 is equipped with a cleaning brush. The scraping strips 31 scrape and clean the mahjong tiles simultaneously. That is, this mahjong machine can clean the mahjong tiles by physical means of the cleaning brush and chemical + physical means of the dry cleaning powder while shuffling the tiles. A flipping block 33 is provided on the large plate 3 at the end of the scraping strip 31 away from the rotating shaft 4. The flipping block 33 is used to flip the mahjong tiles.

[0056] like Figure 4 and Figure 6As shown, the outer edge of the large plate 3 is provided with a barrier 36, which is used to limit the area where the dry cleaning powder is used. At least one waste collection trough 37 is provided around the barrier 36. In this embodiment, four waste collection troughs 37 are arranged in an array. The waste collection troughs 37 are connected to the waste storage bins 39 through the waste collection channels 38. The waste storage bins 39 are located at the bottom of the four corners of the mahjong table. The waste collection troughs 37 collect the waste after the dry cleaning powder is used.

[0057] like Figure 4 and Figure 5 As shown, the edge of the large plate 3 is configured as a driven rack 34, and a drive gear 35 is provided in one of the waste collection troughs 37. The drive gear 35 meshes with the driven rack 34. The drive gear 35 is connected to a reducer, and the reducer is connected to a drive motor 351. The large plate 3 is covered with a number of noise reduction holes 32. The noise reduction holes 32 are provided to reduce the noise when the mahjong machine is shuffling or cleaning.

[0058] In some alternative implementations, the mahjong machine has an air outlet at the end of the mahjong tile conveying channel. The air curtain component blows away waste particles from the mahjong tiles as they pass through the conveying channel, ensuring the smoothness of the mahjong tiles and the feel of the game.

[0059] In some optional embodiments, a wiping component is provided behind the air curtain assembly of the conveying channel inside the mahjong machine. The wiping component is used to wipe the mahjong tiles conveyed by the conveying channel. The wiping component includes a sponge cloth with a large compression and repositioning capacity, which facilitates wiping the mahjong tiles conveyed by the conveying channel.

[0060] like Figure 6 and Figure 7 As shown, a wire harness compartment 7 is provided below the rotating shaft 4, and the wire harness in the wire harness compartment 7 includes a grounding wire.

[0061] This embodiment describes an automatic cleaning mahjong tile cleaning machine. Firstly, compressed air is generated by the air compressor 6, which drives the dry cleaning powder in the raw material storage bin 5. The dry cleaning powder is sprayed into the large tray 3 area through the spray nozzle 41. During the shuffling process of the large tray 3, the dry cleaning powder chemically cleans the mahjong tiles, while the cleaning brush on the scraper strip 31 physically cleans them. This combines physical and chemical methods to clean the mahjong tiles during the shuffling process. The waste material from the dry cleaning powder is blocked by the enclosure 36 and carried away with the surrounding material. The large plate 3 rotates to clean the waste collected in the waste collection tank 37 for recycling. The entire cleaning process is perfectly integrated into the shuffling process, eliminating the need for a separate cleaning step. The use of dry cleaning powder also eliminates the need for water washing, simplifying the mahjong machine's structure and sealing requirements, and reducing the risk of water and electricity accidents. Furthermore, players can press the corresponding "circles," "bamboo," and "characters" suit input buttons 2 to display the corresponding input results on the dice button 11, making it easy for each player to view. Players can rely on their own memory or ask their partners for the suits of each position, enhancing the gaming experience. This mahjong machine has a simple structure, is easy to use, and performs well.

[0062] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic cleaning mahjong machine with a fixed number of tiles, comprising a control panel (1), a large plate (3), and a rotating shaft (4), wherein the rotating shaft (4) and the large plate (3) are disposed inside the mahjong machine, the large plate (3) is rotatable around the rotating shaft (4), the control panel (1) is disposed on the top surface of the rotating shaft (4), and the rotating shaft (4) is liftable, characterized in that, Also includes: The raw material storage bin (5) is located inside the mahjong machine, and the raw material storage bin (5) contains dry cleaning powder; A plurality of ejection holes (41) are provided on the rotating shaft (4) and located above the large plate (3), and the ejection holes (41) are connected to the raw material storage bin (5); An air compressor (6) is installed inside the mahjong machine. The air compressor (6) is connected to the raw material storage bin (5). The air compressor (6) drives the dry cleaning powder in the raw material storage bin (5) to be sprayed into the large plate (3) area through the spray hole (41) by compressed air. Several scraping strips (31) are attached to the large plate (3) and fixedly connected to the rotating shaft (4). The scraping strips (31) are equipped with cleaning brushes. The scraping strips (31) scrape the mahjong tiles while washing them. A barrier (36) is provided on the outer edge of the large plate (3). The barrier (36) is used to limit the area where the dry cleaning powder is used. At least one waste collection trough (37) is provided around the barrier (36) to collect the waste after the dry cleaning powder is used.

2. The automatic cleaning fixed-slot mahjong machine according to claim 1, characterized in that, A desiccant compartment (51) is provided next to the raw material storage compartment (5).

3. The automatic cleaning fixed-slot mahjong machine according to claim 1, characterized in that, The top of the raw material storage silo (5) is connected to a sealing cover (52), and the sealing cover (52) is equipped with a one-way valve (53) and a sensor (54).

4. The automatic cleaning fixed-slot mahjong machine according to claim 1, characterized in that, The rotating shaft (4) is connected to the raw material storage bin (5) through the conveying pipe (42). The top of the conveying pipe (42) is connected to the ejection hole (41), and the bottom of the conveying pipe (42) extends into the bottom of the raw material storage bin (5).

5. The automatic cleaning fixed-slot mahjong machine according to claim 1, characterized in that, The air compressor (6) is connected to a throttle valve (61), the throttle valve (61) is connected to a filter (62), and the filter (62) is connected to the raw material storage bin (5) through an air supply pipe (64).

6. The automatic cleaning fixed-slot mahjong machine according to claim 5, characterized in that, The filter (62) is equipped with a water-air separator, and the drain valve (63) of the water-air separator is located outside the filter (62).

7. The automatic cleaning fixed-slot mahjong machine according to claim 1, characterized in that, The large plate (3) is provided with several sound-absorbing holes (32).

8. The automatic cleaning fixed-slot mahjong machine according to claim 1, characterized in that, The edge of the large disc (3) is configured as a driven rack (34), and a drive gear (35) is provided in one of the waste collection troughs (37). The drive gear (35) meshes with the driven rack (34), and the drive gear (35) is connected to a drive motor (351).

9. The automatic cleaning fixed-slot mahjong machine according to claim 1, characterized in that, The dry cleaning powder is baking soda or sodium sesquicarbonate powder.

10. The automatic cleaning fixed-slot mahjong machine according to any one of claims 1-9, characterized in that, Each of the four sides of the mahjong machine is provided with three fixed-suit input buttons (2), and the three fixed-suit input buttons (2) of each side correspond to the suits of the mahjong machine. The control panel (1) is provided with a dice button (11) corresponding to each of the four sides of the mahjong machine. The dice button (11) is embedded with a display screen, which is used to display the fixed-suit input button (2) activated in the corresponding position.

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