Cleaning roller of mahjong cleaning machine

By designing a spiral-shaped, inverted brush belt and brush roller structure in the mahjong cleaning machine, the problems of incomplete mahjong cleaning and inconvenient discharge are solved, achieving efficient and non-destructive mahjong cleaning and automatic discharge.

CN121372908APending Publication Date: 2026-01-23HANGZHOU JIANGRAN YIXIN TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202410979868.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-07-22
Publication Date
2026-01-23

AI Technical Summary

Technical Problem

Existing mahjong cleaning machines suffer from problems such as poor cleaning effect, high cost, slow speed, and long mahjong stacking time. In particular, insufficient turning of mahjong tiles leads to incomplete cleaning and may scratch the paint.

Method used

A cleaning roller for a mahjong cleaning machine has been designed. The roller surface is provided with multiple first brush belts, and there are spiral turning indentations between the brush belts. The mahjong is turned over and cleaned by rotating and squeezing it. Combined with the use of brush rollers and cloth rollers, efficient cleaning and automatic discharge of mahjong are achieved.

Benefits of technology

It achieves efficient flipping and cleaning of mahjong tiles, reduces cleaning time, avoids scratching the tiles, improves cleaning efficiency and effectiveness, and simplifies the discharging process.

✦ Generated by Eureka AI based on patent content.

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Abstract

A cleaning roller of a mahjong cleaning machine comprises a roller body, a plurality of first brush belts are arranged on the surface of the roller body, each first brush belt comprises a plurality of first brush heads arranged on the surface of the roller body, and a spiral overturning pit capable of containing part of mahjong is arranged between each first brush belt and the adjacent first brush belt. The first brush belt is used for rotating and extruding the mahjong to move in the rotating direction of the roller body and the rotating axis direction of the roller body so that the mahjong can be turned over during cleaning.
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Description

TECHNICAL FIELD

[0001] The present application relates to the field of mahjong, in particular to a cleaning roller of a mahjong cleaning machine. BACKGROUND

[0002] A Chinese patent with the application number CN202310968423.1 discloses a multifunctional mahjong cleaning machine, which comprises a roller cleaning mechanism (a rotating frame) with a first brush head on the inner wall, a roller inner rotating shaft with a second brush head on the outer peripheral surface, and the roller cleaning mechanism comprises a roller body and a cylinder door. The roller inner rotating shaft is fixed with the roller cleaning mechanism, so that the relative displacement between the brush head and the mahjong is small when the mahjong is cleaned, and the cleaning effect is not good.

[0003] A Chinese patent with the application number CN201911118591.1 discloses a conveying type mahjong cleaning machine, which relates to the technical field of mahjong machines. The mahjong cleaning machine comprises a rack, a first conveying mechanism for guiding the preliminary cleaning of magnetic mahjong, a first cleaning mechanism for the preliminary cleaning of magnetic mahjong, a second conveying mechanism for guiding the secondary cleaning of magnetic mahjong, a second cleaning mechanism for the secondary cleaning of magnetic mahjong, a third conveying mechanism for guiding the drying of magnetic mahjong, a drying mechanism for the drying of magnetic mahjong, and a fourth conveying mechanism for storing magnetic mahjong. Although the six surfaces of each mahjong are cleaned one by one, the cost is high and the cleaning speed is slow.

[0004] A Chinese patent with the application number 201921836183.5 discloses a mahjong cleaning device, which comprises at least two layers of rollers arranged from top to bottom, and each layer of rollers comprises at least two rollers. The center lines of the adjacent upper and lower rollers are inclined at an angle of 30 to 60 degrees. The cleaning area formed by the rollers has a structure of being wide at the top and narrow at the bottom. The rotating rollers (cleaning rollers) continuously rub and roll the mahjong. The mahjong cleaning device has been widely sold in the market and is divided into two specifications for cleaning 36-50# and 52-64# mahjong respectively. When the mahjong cleaning machine cleans the mahjong, the mahjong is stacked on the rollers, and the brush rollers slowly extrude the lower mahjong upwards by centrifugal force. During this process, the upper mahjong is difficult to move downwards, so it takes a very long time to complete the cleaning of the mahjong. In addition, the paint may be scratched. SUMMARY

[0005] The present application aims to provide a cleaning roller of a mahjong cleaning machine, which can continuously turn over the mahjong during cleaning.

[0006] To achieve the above objectives, the present invention provides a cleaning roller for a mahjong cleaning machine, comprising a roller body, characterized in that the surface of the roller body is provided with a plurality of first brush belts, each first brush belt including a plurality of first brush heads arranged on the surface of the roller body, and the first brush belts having spiral-shaped flipping recesses between adjacent first brush belts for accommodating a portion of the mahjong tiles, the first brush belts being used to rotate and squeeze the mahjong tiles to move them along the rotation direction of the roller body and the rotation axis of the roller body, thereby causing the mahjong tiles to flip during cleaning.

[0007] Preferably, the discharge cover covers the discharge port, and the rotation axis of the rotating frame extends downward from the inlet towards the discharge port. This allows the rotating frame to be controlled to rotate after the discharge cover is opened, and as the frame rotates, the mahjong tiles gradually fall from the discharge port, eliminating the need to manually remove the tiles from the receiving cavity as in existing technologies.

[0008] Preferably, the plurality of cleaning rollers include brush rollers and cloth rollers arranged at intervals. The brush rollers have multiple brushing sections on their outer circumference, and the cloth rollers are wrapped with a sponge sleeve and a cloth tube sleeved outside the sponge sleeve. The cloth tube can effectively coat the mahjong tiles with the absorbed cleaning agent and wipe the surface of the mahjong tiles, while the high-speed rotation of the brush rollers achieves the brushing and washing of the mahjong tiles.

[0009] Preferably, it also includes a cover-opening drive device for driving the discharge cover to open. After cleaning is completed, the cover-opening drive device can be controlled to open the discharge cover.

[0010] This invention provides a feeding device for a mahjong washing machine. The mahjong washing machine has a frame and a receiving cavity. The feeding device includes a hopper fixed to the frame and extending towards the receiving cavity through a feeding inlet. The hopper is connected to a pouring plate, which can move from a closed position covering the feeding inlet to a receiving position away from the feeding inlet and against the mahjong table. The pouring plate includes a vertical plate and a horizontal plate, the horizontal plate being used to cross the edge of the mahjong table and abut against the tabletop. After the horizontal plate abuts against the tabletop, the user slides the mahjong tiles into the feeding inlet via the horizontal plate, eliminating the need to pick up the mahjong tiles and place them into the feeding inlet as in existing technologies.

[0011] Preferably, the device also includes a controller electrically connected to the electromagnet and the proximity switch. This allows the controller to control the electromagnet to attract the iron body after the proximity switch detects that the discharge cover is closed.

[0012] This invention provides a planetary gear transmission structure with a feed inlet, comprising multiple planetary teeth meshing with a large gear ring and disposed on a turntable. The turntable has a feed inlet in its center, a transmission ring located on one side of each planetary tooth, and a feed pipe extending around the feed inlet towards the planetary tooth. In this application, the feed inlet is positioned in the center of the turntable, and the feed pipe prevents material from falling into the gap between the planetary gear and the turntable.

[0013] The application provides a connecting structure of a cleaning roller, comprising a roller body, a first socket, a second socket, a first plug and a second plug provided at both ends of the roller body and capable of being inserted into the first socket and the second socket, a rotating part connected to the first socket, the first plug being in sliding connection with the roller body, the first plug being capable of moving from an insertion position in the first socket to a pulling-out position out of the first socket, and a first compression spring provided between the first plug and the roller body and used for keeping the first plug in the insertion position.

[0014] The application also provides a connecting structure of a cleaning roller, comprising a roller body, a first socket, a second socket, a first plug and a second plug provided at both ends of the roller body and capable of being inserted into the first socket and the second socket, a rotating part connected to the first socket, the first plug being in sliding connection with the roller body, the first socket being capable of moving from a sleeving position of the first plug to a disengaging position out of the first plug, and a second compression spring provided between the first socket and the rotating shaft and used for keeping the first socket in the sleeving position. When the roller body needs to be removed, the user extrudes the first socket to make the second compression spring shrink, so as to realize the separation of the first plug and the first socket. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 Structure diagram of the mahjong cleaning machine of the first embodiment of the application.

[0016] Figure 2 For Figure 1 Explosion diagram of the mahjong cleaning machine.

[0017] Figure 3 For Figure 2 Local enlarged view of A of the mahjong cleaning machine.

[0018] Figure 4 For Figure 2 Local enlarged view of A' of the mahjong cleaning machine.

[0019] Figure 5 For Figure 2 Explosion diagram of the main body of the mahjong cleaning machine.

[0020] Figure 6 For Figure 5 Local enlarged view of B of the mahjong cleaning machine.

[0021] Figure 7 For Figure 2 Explosion diagram of the feeding device of the mahjong cleaning machine.

[0022] Figure 8 For Figure 7 Local enlarged view of C of the mahjong cleaning machine.

[0023] Figure 9 ForFigure 7 Structure diagram of the use of the feeding device.

[0024] Figure 10 For Figure 9 Local enlarged view at D of the feeding device.

[0025] Figure 11 For Figure 2 Exploded view of the discharging device.

[0026] Figure 12 For Figure 11 Local enlarged view at E of the discharging device.

[0027] Figure 13 For Figure 1 Structure diagram of the planetary gear and rotating shaft of the mahjong cleaning machine.

[0028] Figure 14 For Figure 13 Exploded view of the planetary gear and rotating shaft of the mahjong cleaning machine.

[0029] Figure 15 For Figure 5 Exploded view of the cloth roller of the mahjong cleaning machine.

[0030] Figure 16 For Figure 5 Structure diagram of the brush roller of the mahjong cleaning machine.

[0031] Figure 17 For Figure 16 Local enlarged view at F of the brush roller.

[0032] Figure 18 For Figure 16 Sectional view of the brush roller.

[0033] Figure 19 For Figure 1 Sectional view of the mahjong cleaning machine.

[0034] Figure 20 For Figure 19 Local enlarged view at G of the brush roller. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0036] Please refer to Figures 1-20 , the mahjong cleaning machine comprises a main body 1, an outer shell 2, a feeding device 3, and a discharging device 4.

[0037] The main body comprises a rotating frame 12 arranged on the frame 11, a plurality of cleaning rollers arranged around the rotating axis of the rotating frame 12, a rotating driving device 10 for driving the rotating frame 12 and the cleaning rollers to rotate, the cleaning rollers are parallel to the rotating axis of the rotating frame 12, the plurality of cleaning rollers surround to form a containing cavity 100, one end of the rotating frame 12 is provided with an inlet 100a, the horizontal angle of the rotating axis of the rotating frame 12 is 0-45 degrees, and the end of the containing cavity 100 away from the inlet 100a is provided with an outlet cover 41. In the application, the cleaning rollers can wipe off the dirt on the mahjong by rotating, and the mahjong is continuously turned over by rotating the rotating frame 12 to make the mahjong rise and then fall. The frame 11 is provided with a cleaning scraper 112 extending towards the brush roller 13.

[0038] The outlet cover 41 covers an outlet 100b, and the rotating axis of the rotating frame 12 extends downward from the inlet 100a to the outlet 100b. In this way, the rotating frame 12 can be controlled to rotate after the outlet cover 41 is opened, and the mahjong gradually falls from the outlet 100b as the rotating frame 12 rotates, without the need to take out the mahjong from the containing cavity 100 by hand as in the prior art.

[0039] The plurality of cleaning rollers comprises brush rollers 13 and cloth rollers 14 arranged at intervals, the brush rollers 13 are provided with a plurality of brushing parts on the outer circumferential surface, the cloth roller 14 comprises a roller body 140, a sponge sleeve 141 wrapped outside the roller body 140, a cloth pipe 142 wrapped outside the sponge sleeve 141, and a plug 143 arranged at both ends of the roller body 140. The cloth pipe 142 can well coat the absorbed cleaning agent on the mahjong and wipe the surface of the mahjong, and the brush roller 13 rotates at high speed to realize brushing of the mahjong. The plug 143 is in a character type structure.

[0040] The mahjong cleaning machine further comprises an opening cover driving device 42 for driving the outlet cover 41 to open. The opening cover driving device 42 can be controlled to open the outlet cover 41 after cleaning is completed. The inner side of the vertical plate on both sides of the frame 11 is provided with a limiting ring 110 matched with the end surface of the rotating disc 121, to prevent the rotating frame 12 from moving along the rotating axis direction.

[0041] The frame 11 is provided with a large gear ring 111, the cleaning rollers are connected with planetary gears 51 engaged with the large gear ring 111, and the rotating frame 12 is driven by the gear 101 of the rotating driving device 10.

[0042] The mahjong cleaning machine further comprises a hot air device 61 and a sterilization lamp 62 towards the containing cavity 100. The sterilization lamp 62 is arranged on the inner surface of the shell 2.

[0043] The frame 11 is slidingly connected with a dirt collecting drawer 63 below the rotating frame 12 for receiving dirt. The mahjong cleaning machine further comprises a cleaning agent spraying device for spraying cleaning agent towards the containing cavity 100.

[0044] The brush roller 13 comprises a roller body 140, and a plurality of first brush strips arranged on the surface of the roller body 140, wherein each first brush strip comprises a plurality of first brush heads 131 arranged on the surface of the roller body 140, and the first brush strip and the adjacent first brush strip have a spiral-shaped turnover recess 13a capable of accommodating part of the mahjong tiles, and the first brush strip is used for extruding the mahjong tile along the rotation direction of the roller body 140 and the rotation axis direction of the roller body 140 to make the mahjong tile turn over during cleaning. The first brush strip is also used for extruding the mahjong tile to move towards the discharging direction when rotating in the second direction opposite to the first direction. The turnover recess is provided with a second brush strip comprising a plurality of second brush heads 132 with a height shorter than that of the first brush head 131. The width of the turnover recess 13a is 10-16 mm.

[0045] The diameter of the bristles of the first brush head 131 and / or the second brush head 132 is 0.2-0.3 mm. The spiral angle of the turnover recess 13a is 6-14°. The height of the first brush head 131 protruding from the roller body 140 is 8-12 mm, the height of the second brush head 132 protruding from the roller body 140 is 2-8 mm, and the first brush head 131 is higher than the second brush head 132 by 3-7 mm. The bristles are made of nylon.

[0046] The first brush head 131 and / or the second brush head 132 are cylindrical brush heads with a diameter of 3.5-6.5 mm. The roller body 140 is provided with a plug at both ends connected to the rotating shaft 53 of the mahjong cleaning machine.

[0047] The mahjong cleaning machine also provides a cleaning method for the mahjong cleaning machine, which comprises the following steps: putting a plurality of mahjong tiles into the feeding port 100a; controlling the rotation driving device 10 to rotate in the forward direction, and the first brush strip extrudes the mahjong tile to turn over towards the discharging port 100b; controlling the cleaning agent spray head 646464 to spray cleaning agent; turning on the hot air device 61 and the sterilization lamp 62; completing cleaning; turning off the hot air device 61 and the sterilization lamp 62, controlling the cover opening driving device 42 to open the discharging cover 41; and controlling the rotation driving device 10 to rotate in the reverse direction, and the first brush strip extrudes the mahjong tile to turn over away from the discharging port 100b.

[0048] The application provides a feeding device 3 of a mahjong cleaning machine, the mahjong cleaning machine has a rack 11 and a containing cavity 100, the feeding device 3 comprises a hopper 31 extending towards a feeding port 100a of the containing cavity 100 and fixed to a front cover 113 of the rack 11, the hopper 31 is connected with a tilting plate 32, the tilting plate 32 can be moved from a closing position covering the feeding port 100a to a receiving position being separated from the feeding port 100a and abutting against a mahjong table, the tilting plate 32 comprises a vertical plate 321 and a transverse plate 322, the transverse plate 322 is used for abutting to a table top of the mahjong table beyond a frame of the mahjong table, after the transverse plate 322 abuts to the table top, a user pushes mahjong through the transverse plate 322 into the feeding port 100a in a sliding mode, and it is not necessary to pick up the mahjong and then put it into the feeding port 100a as in the prior art.

[0049] The hopper 31 comprises a slope 311 extending upwards from a lower part of the feeding port 100a and away from the rack 11, and a side plate 312 connecting the slope 311 and the rack 11.

[0050] The side plate 312 is provided with a vertical track 320 extending vertically upwards and a transverse track 320' extending from a middle part of the vertical track 320 and away from the rack 11, the upper part of the tilting plate 32 is provided with a first sliding block 32a in sliding cooperation with the vertical track 320, and the lower part of the tilting plate 32 is provided with a second sliding block 32b in sliding cooperation with the transverse track 320'.

[0051] The tilting plate 32 is provided with a baffle 323 extending upwards on both sides.

[0052] When the first sliding block 32a and the second sliding block 32b are both in sliding cooperation with the vertical track 320, the tilting plate 32 can only move up and down.

[0053] When the second sliding block 32b corresponds to the position of the transverse track 320', the first sliding block 32a is separated from the vertical track 320, and the tilting plate 32 can rotate.

[0054] The first sliding block 32a is in a plate structure.

[0055] The vertical track 320 and the transverse track 320' are both in a groove structure.

[0056] The second sliding block 32b is circular.

[0057] The hopper 31 and / or the tilting plate 32 are made of metal or plastic, the slope 311 is provided with a plurality of ventilation holes, and a hot air device 61 is fixed to a side of the slope 311 away from the containing cavity 100.

[0058] The application provides a discharging device 4 of a mahjong cleaning machine, which comprises a discharging cover 41 and an opening cover driving device 42 for driving the discharging cover 41 to open, the discharging cover 41 is rotationally connected with a rack 11, the side of the discharging cover 41 away from the rotationally connected part 411 is provided with an iron body 44 which can be attracted by an electromagnet 43, and the rack 11 is provided with the electromagnet 43 corresponding to the iron body 44. In the application, the electromagnet 43 and the iron body 44 are provided to attract each other, so that the discharging cover 41 cannot be squeezed open by the mahjong when the discharging cover 41 is closed.

[0059] The rear cover 114 of the rack 11 is provided with a proximity switch 46 for detecting whether the discharging cover 41 is closed.

[0060] The application also comprises a controller which is electrically connected with the electromagnet 43 and the proximity switch 46, so that the controller can control the electromagnet 43 to attract the iron body 44 after the proximity switch 46 detects that the discharging cover 41 is closed.

[0061] The discharging cover 41 is provided with an iron body accommodating part 410 for accommodating the iron body 44, and the rear cover 114 of the rack 11 is provided with an electromagnet accommodating part for accommodating the electromagnet 43.

[0062] The inner surface of the discharging cover 41 is provided with a cleaning agent nozzle 64.

[0063] The cleaning agent nozzle 64 is connected with a pump 65 fixed on the rack 11 through a pipeline.

[0064] The inner surface of the discharging cover 41 extends towards the inside of the rack 11 and is provided with a plug for plugging a material guide pipe 1211 of the mahjong cleaning machine, and the surface of the plug towards the inside of the rack 11 is provided with a plurality of third brush heads 45 which are connected and fixed with the plug through magic tapes. The third brush heads 45 can clean the mahjong and reduce the noise and vibration caused by the collision of the mahjong with the plug.

[0065] The discharging cover 41 comprises an inner shell and a cover plate which are fixed with each other through screws, and the discharging cover 41 is a hollow structure.

[0066] The rotationally connected part 411 is a hollow structure.

[0067] The pipeline passes through the rotationally connected part 411 and is connected with the cleaning agent nozzle 64. The cleaning agent spraying device comprises the cleaning agent nozzle 64, the pump 65 and a cleaning agent container 66.

[0068] The application provides a transmission structure of a rotary frame with an inlet and outlet arranged on the end face, comprising a rotating disc 121 arranged at both ends of the rotary frame 12, a plurality of planet gears 51 arranged on the rotating disc 121 and meshing with a large gear ring 52, and the rotating disc 121 at both ends of the rotary frame 12 is respectively provided with an inlet 100a and an outlet 100b, the rotating disc 121 is provided with a transmission ring 52 located on one side of the planet gear 51, and the rotating disc 121 is provided with a guide pipe 1211 extending towards the center of the rotary frame 12. In the application, the inlet 100a is arranged in the middle of the rotating disc 121, and the guide pipe 1211 is arranged to avoid the material flow falling into the gap between the planet gear 51 and the rotating disc 121.

[0069] The outer circumferential surface of the transmission ring 52 is provided with transmission teeth.

[0070] In other embodiments, the outer circumferential surface of the transmission ring 52 is provided with a groove matched with the belt for transmission, and the rotary frame 12 is driven by the rotary driving device 10 through the belt transmission.

[0071] The rotating disc 121 at the rear end of the rotary frame 12 is rotatably connected with the planet gear 51, the rotating disc 121 at the rear end of the rotary frame is rotatably connected with a rotating shaft 53 without the planet gear, and the planet gear 51 is connected with the rotating shaft 53 rotatably connected with the rotating disc 121.

[0072] The rotating shaft 53 and the rotating disc 121 are provided with a bearing 54.

[0073] The rotating shaft 53 is connected with the socket 55 for connecting the cleaning roller through the rotating disc 121.

[0074] The guide pipe 1211 extends in the direction opposite to the planet gear 51 and is provided with a falling prevention pipe section 1211a for preventing the mahjong from falling into the gap between the cleaning roller and the rotating disc 121.

[0075] The large gear ring 111 is provided with a connecting hole for being fixedly connected with the rack 11.

[0076] The transmission ring 52 and the rotating disc 121 are fixedly connected through screws.

[0077] The planet gear 51, the large gear ring 111, the rotating disc 121 and the transmission ring 52 are made of metal or plastic.

[0078] A connecting structure of a cleaning roller, comprising a roller body 140, a socket 55, a plug 143 arranged at both ends of the roller body 140 and capable of being inserted into the socket 55, the socket 55 being connected with a rotating shaft 53, the socket 55 being slidingly connected with a connecting sleeve 56, the connecting sleeve 56 being capable of moving from a sleeving position accommodating the plug 143 to a disengaging position disengaging the plug 143, and a compression spring 5t being arranged between the connecting sleeve 56 and the socket 55 for keeping the connecting sleeve 56 in the sleeving position.

[0079] The cross section of the socket 55 is U-shaped, and the socket 55 has a taking-out notch. The connecting sleeve 56 is provided with an operation protrusion 561. A guide pipe 57 fixedly connected with the rotating shaft 53 is further included, and the guide pipe 57 is provided with a guide protrusion 571 matched with the connecting sleeve 56. The connecting sleeve 56 is provided with a guide recess 562 matched with the guide protrusion 571, and the operation protrusion 561 corresponds to the position of the taking-out notch. The connecting sleeve 56 can be accommodated in the guide pipe 57. The end of the guide recess 562 close to the rotating shaft 53 is provided with an anti-falling protrusion 563, and the guide protrusion 571 is located at the end of the guide pipe 57 close to the roller body 140. The anti-falling protrusion 563 and the guide protrusion 571 are respectively provided with an installation guide inclined surface.

[0080] While the embodiments of the application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A cleaning roller of a mahjong cleaning machine, comprising a roller body, characterized in that, The roller body surface is provided with a plurality of first brush strips, the first brush strip comprises a plurality of first brush heads arranged on the roller body surface, and the first brush strip and the adjacent first brush strip have a spiral overturning recess capable of accommodating part of mahjong, the first brush strip is used for overturning the mahjong during cleaning by rotating and extruding the mahjong to move along the roller body rotation direction and the roller body rotation axis direction.

2. The cleaning roller of the mahjong cleaning machine according to claim 1, wherein The first brush strip is also used for extruding the mahjong to move towards the discharge direction when rotating in the second direction opposite to the first direction.

3. The cleaning roller of the mahjong cleaning machine according to claim 2, wherein The overturning recess is provided with a second brush strip, and the second brush strip comprises a plurality of second brush heads with a height shorter than that of the first brush head.

4. The mahjong cleaning machine according to claim 1, wherein, The width of the overturning recess is 10mm-16mm.

5. The mahjong cleaning machine according to claim 1, wherein, The diameter of the bristles of the first brush head and / or the second brush head is 0.2mm-0.3mm.

6. The cleaning roller of the mahjong cleaning machine according to claim 1, wherein, The spiral angle of the overturning recess is 6°-14°.

7. The mahjong cleaning machine according to claim 1, wherein The height of the first brush head protruding out of the roller body is 8mm-12mm, the height of the second brush head protruding out of the roller body is 2-8mm, and the first brush head is higher than the second brush head by 3mm-7mm.

8. The cleaning roller of the mahjong cleaning machine according to claim 1, wherein, The bristles are made of nylon.

9. The cleaning roller of the mahjong cleaning machine according to claim 1, wherein, The first brush head and / or the second brush head are cylindrical brush heads with a diameter of 3.5mm-6.5mm.

10. The cleaning roller of the mahjong cleaning machine according to claim 1, wherein, The both ends of the roller body are provided with plugs connected with the rotating shaft of the mahjong cleaning machine.

Citation Information

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