Burr cleaning assembly and grinding apparatus having same

Abstract

Disclosed in the present invention is a burr cleaning assembly, comprising a mounting base, a cleaning cylinder, and a powder sweeping cylinder; the mounting base is configured to be detachably mounted on a grind chamber of a machine body; the cleaning cylinder movably passes through the mounting base and is configured to cover the exterior of an inner burr; the inner side wall of the cleaning cylinder is provided with at least one group of first cleaning bristles configured to be in contact with the outer wall of the inner burr; the powder sweeping cylinder is rotatably sleeved on the cleaning cylinder, and the bottom wall of the powder sweeping cylinder is provided with at least one group of second cleaning bristles configured to be in contact with the bottom of the grind chamber and to have a transmission fit with a powder sweeping plate. The first cleaning bristles are used for, when the inner burr rotates, cleaning residue adhered to the outer wall of the inner burr; and the second cleaning bristles are used for being driven to rotate together when the powder sweeping plate rotates, and for sweeping out to a powder outlet channel the residue which has been cleaned out. Thus, using the burr cleaning assembly of the present invention saves labor and effort; furthermore, the first cleaning bristles on the cleaning cylinder can perform comprehensive cleaning on the outer wall of the inner burr, avoiding the problem of residual powder on the inner burr and having a better cleaning effect; at the same time, the second cleaning bristles on the powder sweeping cylinder can completely sweep out residue which has fallen to the bottom of the grind chamber, thereby avoiding the problem of residual powder in the grind chamber and ensuring the cleanliness of the grind chamber.

Description

A blade cleaning assembly and a grinding device having the same.

[0001] Citation of relevant applications

[0002] This invention claims priority to Chinese Patent Application No. 202411505323.6, filed on October 24, 2024, entitled “A blade cleaning assembly and a grinding device having the same,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] This invention relates to the field of grinding equipment technology, and more specifically to a blade cleaning assembly and a grinding device having the same. Background Technology

[0004] This section provides only background information related to this application to enable those skilled in the art to understand this application more thoroughly and accurately, and it is not necessarily prior art.

[0005] The coffee making process is generally as follows: First, coffee beans are ground into coffee powder using a coffee bean grinding device (such as a coffee grinder or the grinding device on a coffee machine). Then, the coffee powder is tamped into the portafilter of the extraction port. Finally, hot water is added for extraction and filtration to make coffee liquid.

[0006] Existing coffee bean grinding devices require timely cleaning of the burr assembly within the grinding chamber after a period of use to prevent food safety hazards such as off-flavors and spoilage caused by prolonged residue. This burr assembly typically consists of an outer burr and an inner burr. The outer burr is usually detachable for easy cleaning, while the inner burr is generally not removable, requiring manual cleaning with a brush. This is time-consuming and laborious, and the limited space within the grinding chamber prevents thorough cleaning of certain areas, resulting in poor cleaning effectiveness. Furthermore, when residual coffee powder falls to the bottom of the grinding chamber and is swept out through the dust collector into the outlet channel, gaps exist between the dust collector blades and the bottom wall of the grinding chamber, preventing complete removal of all powder that has fallen to the bottom, thus leaving residual coffee powder inside the grinding chamber.

[0007] Therefore, further improvements are needed. Summary of the Invention

[0008] In order to overcome the defects of the prior art mentioned above, the present invention provides a blade cleaning assembly and a grinding device having the same, so as to solve the problems mentioned in the background art, such as time-consuming and laborious cleaning, poor cleaning effect of the inner blade, and easy formation of residual powder in the grinding chamber.

[0009] The technical solution adopted by this invention to solve its problem is:

[0010] A blade cleaning assembly includes:

[0011] Mounting base, which is used for detachable mounting on the grinding chamber of the machine body;

[0012] A cleaning cylinder is movably inserted into the mounting base and used to cover the outside of the inner blade disc; the inner sidewall of the cleaning cylinder is provided with at least one set of first cleaning bristles for contacting the outer wall of the inner blade disc;

[0013] A powder-sweeping cylinder is rotatably mounted on the cleaning cylinder; the bottom wall of the powder-sweeping cylinder is provided with at least one set of second cleaning bristles for contacting the bottom of the grinding chamber and engaging in a driving cooperation with the powder-sweeping plate;

[0014] The first cleaning bristles are used to sweep away the residue adhering to the outer wall of the inner blade disc when the inner blade disc rotates, and the second cleaning bristles are used to drive the powder sweeping plate to rotate together when the powder sweeping plate rotates and sweep the swept residue out to the powder outlet channel.

[0015] Furthermore, the shape of the first cleaning bristles is adapted to the shape of the inner blade disc.

[0016] Furthermore, multiple sets of the first cleaning bristles and the second cleaning bristles are provided, with multiple sets of the first cleaning bristles arranged around the inner side wall of the cleaning cylinder and multiple sets of the second cleaning bristles arranged around the bottom wall of the powder sweeping cylinder.

[0017] Furthermore, the outer wall of the powder-sweeping cylinder is provided with at least one set of third cleaning bristles for contacting the inner wall of the grinding chamber.

[0018] Furthermore, the third cleaning brush bristles are provided in multiple sets, and the multiple sets of the third cleaning brush bristles are arranged around the outer side wall of the powder sweeping cylinder.

[0019] Furthermore, the powder-sweeping cylinder is rotatably mounted on the cleaning cylinder via a snap-fit ​​structure, wherein:

[0020] The snap-fit ​​structure includes an annular groove formed on the outer wall of the cleaning cylinder and a hook set on the top of the powder sweeping cylinder. The hook is snapped into the annular groove and can rotate along the annular groove.

[0021] Furthermore, the mounting base has a through groove and a mounting groove communicating with the through groove, the cleaning cylinder passes through the through groove, and the mounting groove is provided with a limiting device for restricting the movement position of the cleaning cylinder.

[0022] Further, the limiting device includes a mounting bracket fixed in the mounting groove, a pressure rod movably passing through the mounting bracket, a limiting block movably passing through the mounting bracket and engaging with the pressure rod, a first elastic element disposed within the mounting bracket and abutting against the limiting block, and a second elastic element disposed within the mounting bracket and abutting against the pressure rod, wherein:

[0023] The outer wall of the cleaning cylinder has two limiting grooves arranged at intervals. Under the elastic force of the first elastic element, the limiting block can be driven to extend until it is aligned with the limiting groove. When the limiting block is aligned with the limiting groove, it is locked into the limiting groove to achieve the limiting and fixing of the cleaning cylinder. Under the elastic force of the second elastic element, one end of the pressure rod can be driven to extend out of the mounting bracket for the user to press down. When the pressure rod is pressed down, the limiting block can overcome the elastic force of the first elastic element and move to disengage from the limiting groove. At this time, the cleaning cylinder is in a movable state.

[0024] Furthermore, a second aspect of the present invention provides a grinding apparatus, comprising a body and a blade cleaning assembly disposed on the body, wherein:

[0025] The machine body has a grinding chamber, and the grinding chamber is provided with a powder sweeping plate and a blade assembly located above the powder sweeping plate. The blade assembly includes a detachable outer blade and an inner blade that cooperates with the outer blade and is not detachable.

[0026] The machine body is equipped with a driving device, which drives the powder sweeping plate and the inner blade disc to rotate simultaneously;

[0027] The blade cleaning assembly is detachably screwed into the grinding chamber via the mounting base.

[0028] Furthermore, the machine body is equipped with a controller and a sensor, and both the sensor and the drive device are electrically connected to the controller;

[0029] The mounting base is equipped with a trigger block. When the mounting base is screwed into the grinding chamber and in place, the trigger block triggers the sensing element. The controller can determine that the blade cleaning assembly has been assembled in place. Subsequently, the controller can start the drive device to drive the powder sweeping plate and the inner blade to rotate.

[0030] In summary, the blade cleaning assembly and grinding device provided by the present invention have the following beneficial effects:

[0031] (1) In the blade cleaning assembly of the present invention, when it is necessary to clean the inner blade, the outer blade inside the grinding chamber of the machine body needs to be removed first. Then, the blade cleaning assembly is installed on the grinding chamber and the cleaning cylinder and the powder sweeping cylinder are moved down so that the cleaning cylinder covers the outside of the inner blade. Then, the grinding device is started and the inner blade and the powder sweeping plate are rotated. The first cleaning bristles on the inner wall of the cleaning cylinder can sweep away the residue adhering to the inner blade when the inner blade rotates so that it falls to the bottom of the grinding chamber. The second cleaning bristles on the bottom wall of the powder sweeping cylinder can be rotated by the powder sweeping plate to completely sweep the residue that has fallen to the bottom of the grinding chamber to the powder outlet channel, thereby completing the cleaning. Thus, the blade cleaning assembly of the present invention is not only more convenient and labor-saving, but the first cleaning bristles on the cleaning cylinder can clean the outer wall of the inner blade in all directions, avoiding the problem of residual powder on the inner blade, and the cleaning effect is better. At the same time, the second cleaning bristles on the powder sweeping cylinder can completely sweep away the residue that has fallen to the bottom of the grinding chamber to the powder outlet channel, thereby avoiding the problem of residual powder in the grinding chamber.

[0032] (2) The blade cleaning assembly of the present invention provides a third cleaning brush on the outer wall of the powder sweeping cylinder. When the powder sweeping plate rotates and drives the powder sweeping cylinder to rotate, the third cleaning brush can sweep away a small amount of residual powder adhering to the inner wall of the grinding chamber so that it falls to the bottom of the grinding chamber and is finally swept out by the second cleaning brush, thereby ensuring the cleanliness and hygiene of the grinding chamber.

[0033] (3) When the bean hopper assembled on the machine body is removed without disassembling the outer blade, there are still a small amount of residual beans in the grinding chamber of the machine body. In order to avoid waste, the blade cleaning component can be installed on the grinding chamber and the grinding device can be started. At this time, the residual beans in the grinding chamber can be ground into coffee powder under the action of the blade component and swept out to the powder outlet channel by the powder sweeping plate, thereby improving the utilization rate of residual beans. Attached Figure Description

[0034] Figure 1 is an exploded view of the grinding device according to an embodiment of the present invention;

[0035] Figure 2 is an exploded view of the blade cleaning assembly in the grinding device of this embodiment of the invention;

[0036] Figure 3 is a structural schematic diagram from another perspective of Figure 2;

[0037] Figure 4 is a schematic diagram of the structure of the cutter head cleaning assembly of the present invention after the limiting device is hidden from the mounting bracket;

[0038] Figure 5 is a cross-sectional schematic diagram of the blade cleaning assembly according to an embodiment of the present invention;

[0039] Figure 6 is a schematic diagram of the structure of the grinding device in an embodiment of the present invention;

[0040] Figure 7 is a cross-sectional schematic diagram of the grinding device according to an embodiment of the present invention when the cleaning cylinder is not pressed down;

[0041] Figure 8 is a cross-sectional schematic diagram of the grinding device pressing down the cleaning cylinder in an embodiment of the present invention.

[0042] The meanings of the reference numerals in the attached drawings are as follows: 1. Machine body; 11. Grinding chamber; 12. Inner blade disc; 13. Powder sweeping plate; 14. Slider; 141. Concave point; 15. Connecting rod; 16. Clearance groove; 2. Blade disc cleaning assembly; 21. Mounting base; 211. Through groove; 212. Mounting groove; 213. Slide groove; 2131. Protrusion; 214. Trigger block; 22. Cleaning cylinder; 221. First cleaning brush bristles; 222. Guide slide groove; 223. Limiting slot; 224. Annular slot; 23. Limiting device; 231. Mounting bracket; 232. Pressure rod; 233. Limiting block; 234. First elastic element; 235. Second elastic element; 24. Powder sweeping cylinder; 241. Second cleaning brush bristles; 242. Third cleaning brush bristles; 243. Hook. Detailed Implementation

[0043] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0044] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" 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 invention and simplifying the description, and do not indicate or imply that the module 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 invention.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0046] Referring to Figures 1-8, the present invention provides a grinding device. Preferably, the grinding device is a coffee brewing machine with a bean grinding device. The coffee brewing machine includes a body 1, on which a grinding chamber 11 is provided. The grinding chamber 11 is provided with a blade assembly for grinding coffee beans and a powder-dispensing plate 13 disposed below the blade assembly for dispensing powder. The blade assembly includes a detachable outer blade and an inner blade 12 that cooperates with the outer blade and is not detachable. In addition, it also includes a bean hopper that is detachably screwed into the grinding chamber 11 of the body 1.

[0047] Therefore, when the bean hopper is assembled onto the grinding chamber 11 and rotated into place, the bean hopper opens and the coffee beans inside fall into the grinding chamber 11. When the coffee brewing machine is started, the coffee beans can be ground into coffee powder by the action of the burr assembly, and then swept out to the powder outlet channel and flow out by the action of the powder sweeping plate 13.

[0048] After the grinding device has been used for a period of time, the user needs to clean the blade assembly in the grinding chamber 11 in a timely manner. Therefore, this application also includes a blade cleaning assembly 2 that can be detachably screwed into the grinding chamber 11 of the machine body 1. The blade cleaning assembly 2 includes a mounting base 21, a cleaning cylinder 22 that is movably inserted into the mounting base 21 and can move up and down to completely cover the outside of the inner blade 12, and a powder sweeping cylinder 24 that is rotatably sleeved on the bottom of the cleaning cylinder 22. The inner side wall of the cleaning cylinder 22 is provided with at least one set of first cleaning bristles 221 that contact the outer wall of the inner blade 12. The first cleaning bristles 221 are used to sweep away the residue adhering to the outer wall of the inner blade 12 when the inner blade 12 rotates. The bottom wall of the powder sweeping cylinder 24 is provided with at least one set of second cleaning bristles 241 that contact the bottom of the grinding chamber 11 and are driven to cooperate with the powder sweeping plate 13. The second cleaning bristles 241 are used to drive the powder sweeping plate 13 to rotate together when it rotates and sweep the cleaned residue out to the powder outlet channel.

[0049] Therefore, when it is necessary to clean the inner blade 12, the bean hopper assembled on the machine body 1 and the outer blade set in the grinding chamber 11 of the machine body 1 can be removed first. Then, the blade cleaning assembly 2 is installed on the grinding chamber 11 and the cleaning cylinder 22 is moved downward until it completely covers the outside of the inner blade 12. At this time, the second cleaning bristles 241 on the powder sweeping cylinder 24 are located on the outer periphery of the powder sweeping plate 13. Then, the coffee brewing machine is started and the inner blade 12 and the powder sweeping plate 13 are rotated at the same time. The first cleaning bristles 221 on the inner wall of the cleaning cylinder 22 can sweep the residue adhering to the inner blade 12 when the inner blade 12 is rotated so that it falls to the bottom of the grinding chamber 11. The second cleaning bristles 241 on the bottom wall of the powder sweeping cylinder 24 can be driven by the powder sweeping plate 13 to rotate so that the residue that has fallen to the bottom of the grinding chamber 11 is completely swept out to the powder outlet channel, thereby completing the cleaning.

[0050] Therefore, using the blade cleaning component 2 of this application for cleaning, since the inner blade 12 can be automatically cleaned by rotating, it is more convenient and labor-saving. In addition, the first cleaning bristles 221 in the cleaning cylinder 22 can clean the outer wall of the inner blade 12 in all directions, avoiding the problem of residual powder on the inner blade 12, and the cleaning effect is better.

[0051] In addition, the blade cleaning assembly 2 of this application also has the function of improving the utilization rate of coffee residue in the grinding chamber 11. Specifically, when the bean hopper assembled on the machine body 1 is removed without disassembling the outer blade, a small amount of residue remains in the grinding chamber 11 of the machine body 1. In order to avoid waste, the blade cleaning assembly 2 can be installed on the grinding chamber 11 and the coffee brewing machine can be started. The residue in the grinding chamber 11 can be ground into coffee powder by the action of the blade assembly and swept out to the powder outlet channel by the powder sweeping plate 13, thereby improving the utilization rate of residue.

[0052] Additionally, it should be noted that the grinding apparatus of the present invention is also applicable to stand-alone coffee grinders or other powder grinding devices. As long as it involves powder grinding devices, it falls within the protection scope of this application and is not limited herein.

[0053] Preferably, the shape of the first cleaning bristles 221 inside the cleaning cylinder 22 is adapted to the shape of the inner blade disc 12. In this embodiment of the invention, the inner blade disc 12 is an inner conical blade disc that is narrower at the top and wider at the bottom, and the shape of the first cleaning bristles 221 is conical. This arrangement allows the first cleaning bristles 221 to better clean the residue and powder adhering to the inner blade disc 12, resulting in a better cleaning effect.

[0054] In this embodiment of the invention, multiple sets of the first cleaning bristles 221 and the second cleaning bristles 241 are provided. Multiple sets of the first cleaning bristles 221 are arranged around the inner wall of the cleaning cylinder 22, and multiple sets of the second cleaning bristles 241 are arranged around the bottom wall of the powder-sweeping cylinder 24. Therefore, providing multiple sets of the first cleaning bristles 221 increases the number of times the inner blade disc 12 is cleaned, thereby further improving the cleaning effect on the inner blade disc 12; providing multiple sets of the second cleaning bristles 241 can better remove all residual powder that has fallen into the bottom of the grinding chamber 11, resulting in a better cleaning effect.

[0055] Referring again to Figures 2-3 and 5, the outer wall of the powder sweeping cylinder 24 is also provided with at least one set of third cleaning bristles 242 for contacting the inner wall of the grinding chamber 11. Preferably, multiple sets of the third cleaning bristles 242 are provided, and the multiple sets of third cleaning bristles 242 are arranged around the outer wall of the powder sweeping cylinder 24.

[0056] Therefore, by setting the third cleaning brush 242, when the powder sweeping plate 13 rotates and drives the powder sweeping cylinder 24 to rotate, the third cleaning brush 242 can sweep away a small amount of residual powder adhering to the inner wall of the grinding chamber 11 so that it falls to the bottom of the grinding chamber 11 and is finally swept out by the second cleaning brush 241, thereby ensuring the cleanliness and hygiene of the grinding chamber 11.

[0057] Furthermore, the powder-sweeping cylinder 24 is rotatably mounted on the cleaning cylinder 22 via a snap-fit ​​structure. The snap-fit ​​structure includes an annular groove 224 formed on the outer wall of the cleaning cylinder 22 and several hooks 243 arranged around the top of the powder-sweeping cylinder 24. The hooks 243 are all engaged in the annular groove 224 and can rotate along the annular groove 224, thereby realizing the rotatable connection between the two.

[0058] Referring to Figures 3 and 6, the blade cleaning assembly 2 is detachably screwed into the grinding chamber 11 of the machine body 1 via the mounting base 21. Specifically, the mounting base 21 and the grinding chamber 11 of the machine body 1 are detachably engaged through a snap-fit ​​structure. This snap-fit ​​structure includes a sliding groove 213 and a slider 14 that engage with each other. The sliding groove 213 is located on the outer bottom wall of the mounting base 21, and the slider 14 is located on the inner side wall of the grinding chamber 11 of the machine body 1. The sliding groove 213 is also provided with a protrusion 2131, and the slider 14 is also provided with a concave point 141. Thus, when the mounting base 21 is screwed into the grinding chamber 11 through the sliding snap-fit ​​engagement of the sliding groove 213 and the slider 14 until the protrusion 2131 on the sliding groove 213 engages with the concave point 141 on the slider 14, the mounting base 21 is screwed into place.

[0059] Of course, it should be noted that in other embodiments, the positions of the slide groove 213, the slider 14, the protrusion 2131, and the concave point 141 can be interchanged to achieve the same technical effect, and there are no restrictions here.

[0060] Furthermore, the machine body 1 also includes a controller, a drive unit, and sensors. The drive unit drives the powder-sweeping plate 13 and the inner blade disc 12 to rotate simultaneously. Both the drive unit and the sensors are electrically connected to the controller. The outer wall of the mounting base 21 is equipped with a trigger block 214. When the mounting base 21 is screwed into and properly installed in the grinding chamber 11, the trigger block 214 triggers the sensors. At this time, the sensors send a signal to the controller, which can determine that the blade disc cleaning assembly 2 is properly installed. Subsequently, the controller can control the drive unit to move the blade disc assembly and the powder-sweeping plate 13, thereby achieving the cleaning operation. This design prevents the blade disc assembly from being started if the blade disc cleaning assembly 2 is not properly installed, thus ensuring user safety.

[0061] In this embodiment, the sensing element is a micro switch, and the micro switch and the trigger block 214 are connected by a connecting rod 15. The grinding cavity 11 is provided with a relief groove 16 for avoiding the trigger block 214, and one end of the connecting rod 15 extends out of the relief groove 16 to cooperate with the trigger block 214.

[0062] Furthermore, the mounting base 21 is also provided with a through groove 211 and a mounting groove 212 that connects to the through groove 211. The cleaning cylinder 22 passes through the through groove 211, and the mounting groove 212 is provided with a limiting device 23 for restricting the movement position of the cleaning cylinder 22.

[0063] Specifically, the limiting device 23 includes a mounting bracket 231 fixed in the mounting groove 212, a pressure rod 232 movably passing through the mounting bracket 231 and movable up and down, a limiting block 233 movably passing through the mounting bracket 231 and movable horizontally, a first elastic element 234 disposed in the mounting bracket 231 and abutting against the limiting block 233, and a second elastic element 235 disposed in the mounting bracket 231 and abutting against the pressure rod 232; wherein, the limiting block 233 and the pressure rod 232 are connected by inclined plane transmission. When the pressure rod 232 is driven to move downward, the limiting block 233 can overcome the elastic force of the first elastic element 234 and retract inward in the horizontal direction through the inclined plane.

[0064] In addition, the outer wall of the cleaning cylinder 22 is provided with two limiting slots 223 arranged vertically and vertically. Under the elastic force of the first elastic member 234, the limiting block 233 can be driven to extend horizontally until it is aligned with the limiting slot 223. The limiting block 233 is then engaged in the limiting slot 223 to achieve the limiting and fixing of the cleaning cylinder 22. When the pressure rod 232 is driven to move downward, the limiting block 233 can overcome the elastic force of the first elastic member 234 and retract inward in the horizontal direction through the inclined surface, thereby causing the limiting block 233 to disengage from the limiting slot 223. At this time, the cleaning cylinder 22 can move up and down.

[0065] Under the elastic force of the second elastic element 235, one end of the pressure rod 232 can be extended out of the mounting bracket 231 for the user to press down. When the user presses down on the pressure rod 232, the pressure rod 232 can overcome the elastic force of the second elastic element 235 and move. When the user releases the external force, the pressure rod 232 can spring back to its original position under the elastic force of the second elastic element 235.

[0066] Therefore, when the pressing rod 232 is pressed down, the cleaning cylinder 22 moves downward until the limiting block 233 is engaged in the limiting groove 223 located at the lower part. At this time, the cleaning cylinder 22 completely covers the outside of the inner blade disc 12 and the first cleaning bristles 221 inside the cleaning cylinder 22 contact the outer wall of the inner blade disc 12. At this time, several second cleaning bristles 241 on the bottom wall of the powder sweeping cylinder 24 are arranged around the outer periphery of the powder sweeping plate 13 and the second cleaning bristles 241 contact the bottom of the grinding chamber 11. When the pressing rod 232 is pressed down, the cleaning cylinder 22 moves upward until the limiting block 233 is engaged in the limiting groove 223 located at the upper part. At this time, the cleaning cylinder 22 separates from the inner blade disc 12.

[0067] In this embodiment, both the first elastic element 234 and the second elastic element 235 are springs.

[0068] In addition, the outer wall of the cleaning cylinder 22 is provided with a guide groove 222 extending along the height direction. Both limiting slots 223 are located in the guide groove 222. The limiting block 233 is partially inserted into the guide groove 222 and slidably engaged with it.

[0069] Therefore, the cleaning cylinder 22 can move up and down by sliding with the guide groove 222 and the limiting block 233, thereby improving the stability of movement.

[0070] In summary, the blade cleaning assembly 2 and the grinding device having the same provided by the present invention have the following beneficial effects:

[0071] (i) When the inner blade disc 12 needs to be cleaned, the outer blade disc in the grinding chamber 11 of the machine body 1 needs to be removed first. Then, the blade disc cleaning assembly 2 is installed on the grinding chamber 11 and the cleaning cylinder 22 and the powder sweeping cylinder 24 are moved down so that the cleaning cylinder 22 covers the outside of the inner blade disc 12. Then, the grinding device is started and the inner blade disc 12 and the powder sweeping plate 13 are rotated. The first cleaning bristles 221 on the inner side wall of the cleaning cylinder 22 can sweep the residue adhering to the inner blade disc 12 when the inner blade disc 12 is rotated so that it falls to the bottom of the grinding chamber 11. The second cleaning bristles 241 on the bottom wall of the powder sweeping cylinder 24 can be driven by the powder sweeping plate 13 to rotate so that the residue that has fallen to the bottom of the grinding chamber 11 is completely swept out to the powder outlet channel, thereby completing the cleaning. Therefore, the blade cleaning assembly 2 of the present invention is not only more convenient and labor-saving, but also the first cleaning bristles 221 on the cleaning cylinder 22 can clean the outer wall of the inner blade 12 in all directions, avoiding the problem of residual powder on the inner blade 12, and the cleaning effect is better; at the same time, the second cleaning bristles 241 on the powder sweeping cylinder 24 can completely sweep the residue that falls to the bottom of the grinding chamber 11 to the powder outlet channel, thereby avoiding the problem of residual powder in the grinding chamber 11.

[0072] (ii) The blade cleaning assembly 2 of the present invention provides a third cleaning brush 242 on the outer side wall of the powder sweeping cylinder 24. When the powder sweeping plate 13 rotates and drives the powder sweeping cylinder 24 to rotate, the third cleaning brush 242 can sweep away the residual powder adhering to the inner side wall of the grinding chamber 11, thereby ensuring the cleanliness and hygiene of the grinding chamber 11.

[0073] (III) When the bean hopper assembled on the machine body 1 is removed without disassembling the outer blade, a small amount of residual beans are still left in the grinding chamber 11 of the machine body 1. In order to avoid waste, the blade cleaning component 2 can be installed on the grinding chamber 11 and the grinding device can be started. At this time, the residual beans in the grinding chamber 11 can be ground into coffee powder under the action of the blade component and swept out to the powder outlet channel by the powder sweeping plate 13, thereby improving the utilization rate of residual beans.

[0074] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0075] It should be understood that the terms "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 the present invention and simplifying the description, and do not indicate or imply that the module 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 limiting the present invention.

[0076] Furthermore, in the description of this invention, "a plurality of" or "several" means two or more, unless otherwise explicitly specified.

[0077] The technical means disclosed in this invention are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications are also considered within the scope of protection of this invention.

Claims

1. A blade cleaning assembly, characterized in that, include: Mounting base, which is used for detachable mounting on the grinding chamber of the machine body; A cleaning cylinder is movably inserted into the mounting base and used to cover the outside of the inner blade disc; the inner sidewall of the cleaning cylinder is provided with at least one set of first cleaning bristles for contacting the outer wall of the inner blade disc; A powder-sweeping cylinder is rotatably mounted on the cleaning cylinder; the bottom wall of the powder-sweeping cylinder is provided with at least one set of second cleaning bristles for contacting the bottom of the grinding chamber and engaging in a driving cooperation with the powder-sweeping plate; The first cleaning bristles are used to sweep away the residue adhering to the outer wall of the inner blade disc when the inner blade disc rotates, and the second cleaning bristles are used to drive the powder sweeping plate to rotate together when the powder sweeping plate rotates and sweep the swept residue out to the powder outlet channel.

2. The blade cleaning assembly according to claim 1, characterized in that, The shape of the first cleaning brush bristles is adapted to the shape of the inner blade disc.

3. The blade cleaning assembly according to claim 1, characterized in that, Both the first cleaning bristles and the second cleaning bristles are provided in multiple sets. The multiple sets of the first cleaning bristles are arranged around the inner side wall of the cleaning cylinder, and the multiple sets of the second cleaning bristles are arranged around the bottom wall of the powder sweeping cylinder.

4. The blade cleaning assembly according to any one of claims 1-3, characterized in that, The outer wall of the powder-sweeping cylinder is also provided with at least one set of third cleaning bristles for contacting the inner wall of the grinding chamber.

5. The blade cleaning assembly according to claim 4, characterized in that, The third cleaning brush bristles are provided in multiple sets, and the multiple sets of the third cleaning brush bristles are arranged around the outer side wall of the powder sweeping cylinder.

6. The blade cleaning assembly according to any one of claims 1-3, characterized in that, The powder-sweeping cylinder is rotatably mounted on the cleaning cylinder via a snap-fit ​​structure, wherein: The snap-fit ​​structure includes an annular groove formed on the outer wall of the cleaning cylinder and a hook set on the top of the powder sweeping cylinder. The hook is snapped into the annular groove and can rotate along the annular groove.

7. The blade cleaning assembly according to any one of claims 1-3, characterized in that, The mounting base has a through groove and a mounting slot communicating with the through groove. The cleaning cylinder passes through the through groove, and the mounting slot is provided with a limiting device for restricting the movement of the cleaning cylinder.

8. The blade cleaning assembly according to claim 7, characterized in that, The limiting device includes a mounting bracket fixed in the mounting groove, a pressure rod movably passing through the mounting bracket, a limiting block movably passing through the mounting bracket and engaging with the pressure rod, a first elastic element disposed within the mounting bracket and abutting against the limiting block, and a second elastic element disposed within the mounting bracket and abutting against the pressure rod, wherein: The outer wall of the cleaning cylinder has two limiting grooves arranged at intervals. Under the elastic force of the first elastic element, the limiting block can be driven to extend until it is aligned with the limiting groove. When the limiting block is aligned with the limiting groove, it is locked into the limiting groove to achieve the limiting and fixing of the cleaning cylinder. Under the elastic force of the second elastic element, one end of the pressure rod can be driven to extend out of the mounting bracket for the user to press down. When the pressure rod is pressed down, the limiting block can overcome the elastic force of the first elastic element and move to disengage from the limiting groove. At this time, the cleaning cylinder is in a movable state.

9. A grinding apparatus, characterized in that, Includes a body and a blade cleaning assembly as described in any one of claims 1-8, wherein: The machine body has a grinding chamber, and the grinding chamber is provided with a powder sweeping plate and a blade assembly located above the powder sweeping plate. The blade assembly includes a detachable outer blade and an inner blade that cooperates with the outer blade and is not detachable. The machine body is equipped with a driving device, which drives the powder sweeping plate and the inner blade disc to rotate simultaneously; The blade cleaning assembly is detachably screwed into the grinding chamber via the mounting base.

10. The grinding apparatus according to claim 9, characterized in that, The machine body is equipped with a controller and a sensor, and both the sensor and the drive device are electrically connected to the controller. The mounting base is equipped with a trigger block. When the mounting base is screwed into the grinding chamber and in place, the trigger block triggers the sensing element. The controller can determine that the blade cleaning assembly has been assembled in place. Subsequently, the controller can start the drive device to drive the powder sweeping plate and the inner blade to rotate.

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