Detachable knife grinding device and coffee machine

Abstract

The utility model relates to the technical field of coffee machines, and provides a detachable knife grinding device and a coffee machine, the detachable knife grinding device comprises a lower knife assembly and an upper knife assembly, the lower knife assembly comprises a lower knife holder, the lower knife holder is provided with at least one connecting block and a clamping ring, the connecting block is provided with a connecting part, the upper knife assembly comprises an inner fixing frame, and the inner fixing frame is provided with a clamping ring. The inner fixing frame is provided with at least one matching block, the matching block is provided with a matching part rotationally clamped with the connecting part, the clamping ring is clamped with the matching block, the bottom of the connecting block is provided with a first inclined section, and the connecting part is a clamping groove formed in the first inclined section. By means of the coffee bean cutter, when the coffee beans are stuck, a user can rotate the lower cutter base, the connecting part and the matching part are released from clamping, the connecting block and the matching block are separated, and therefore the upper cutter assembly is directly detached from the lower cutter assembly, and the user can conveniently remove the stuck coffee beans.

Description

Technical Field

[0001] The utility model relates to the technical field of coffee machines, in particular to a detachable knife sharpening device and a coffee machine. Background Art

[0002] A coffee machine is a device used to make coffee beverages and is widely used in households, offices, and commercial places. The grinding system is one of the key parts of a coffee machine. It is responsible for grinding coffee beans into appropriate particle sizes, which is crucial for the taste and quality of coffee. The fineness of grinding directly affects the taste of coffee.

[0003] During the grinding process, coffee beans are likely to get stuck in the grinding components of the coffee machine, resulting in poor grinding or even stoppage of work. Traditional grinding systems often have complex structures or integrated designs and are not easily detachable, making it very inconvenient for users to clean stuck beans or other residues.

[0004] The purpose of the present utility model is to solve the problem that the knife sharpening device of a traditional coffee machine is not convenient to clean after beans are stuck. Content of the Utility Model

[0005] The purpose of the present utility model is to solve the problem that the knife sharpening device of a traditional coffee machine is not convenient to clean after beans are stuck. The present utility model adopts the following technical solutions:

[0006] A detachable knife sharpening device includes a lower knife assembly and an upper knife assembly. The lower knife assembly includes a lower knife base, and the lower knife base is provided with at least one connecting block and a snap ring. The connecting block is provided with a connecting portion. The upper knife assembly includes an inner fixing frame, and the inner fixing frame is provided with at least one fitting block. The fitting block is provided with a fitting portion that is rotationally clamped with the connecting portion. The lower knife base includes a snap ring, and the snap ring is clamped with the fitting block.

[0007] For a detachable knife sharpening device as described above, a first inclined section is provided at the bottom of the connecting block, the connecting portion is a slot provided in the first inclined section, a second inclined section matching the inclination angle of the first inclined section is provided at the top of the fitting block, and the fitting portion is a block provided in the second inclined section.

[0008] For a detachable knife sharpening device as described above, a stop block is fixedly connected to one side of the fitting block, and the stop block is used to block the connecting block from moving in the direction of the stop block.

[0009] For a detachable knife sharpening device as described above, a rounded corner section is provided at one end of the fitting block.

[0010] A detachable knife sharpening device as described above, wherein the snap ring is located below the mating block, the connecting block is located above the mating block, and the connecting block and the snap ring together form a space for carrying the mating block.

[0011] A detachable knife sharpening device as described above, wherein the top surface of the mating portion is an arc surface.

[0012] A detachable knife sharpening device as described above, wherein a lower knife rotating shaft is installed in the lower knife seat, the lower knife assembly includes a lower grinding wheel sleeved outside the lower knife rotating shaft, the lower grinding wheel is arranged inside the upper grinding wheel, the upper knife assembly includes an upper grinding wheel, the lower grinding wheel is arranged inside the upper grinding wheel, an upper knife support is installed at the top of the upper grinding wheel, and the upper knife support is sleeved outside the lower knife rotating shaft and is rotatably connected to the lower knife rotating shaft.

[0013] A detachable knife sharpening device as described above, wherein the diameter of the bottom of the lower grinding wheel is shorter than the inner diameter of the bottom of the upper grinding wheel.

[0014] A detachable knife sharpening device as described above, wherein at least one anti-slip groove is formed in the side wall of the lower knife seat.

[0015] The present utility model also discloses a coffee machine, which includes a coffee machine main body and a knife sharpening device.

[0016] Implementing the embodiments of the present utility model has the following beneficial effects:

[0017] 1. In the present utility model, when bean jamming occurs, the user can rotate the lower knife seat to disengage the connecting portion from the mating portion, and the connecting block is separated from the mating block, so that the upper knife assembly can be directly detached from the lower knife assembly, which further facilitates the user to remove the jammed coffee beans.

[0018] 2. In the present utility model, the inclined design of the first inclined section and the second inclined section enables the connecting block to slide upward along the second inclined section when the connecting block contacts the mating block during rotation, so that the connecting block enters the set position, avoiding damage that may be caused by hard docking.

[0019] In summary, the present utility model solves the problem that the knife sharpening device of the traditional coffee machine is not easy to clean after bean jamming. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 This is a schematic diagram of the overall structure of a detachable knife sharpening device and a coffee machine according to the present utility model.

[0022] Figure 2 This is a cross-sectional view of a detachable knife sharpening device and a coffee machine according to the present utility model.

[0023] Figure 3 This is a schematic diagram of the structure of the upper knife assembly of a detachable knife sharpening device and a coffee machine according to the present utility model.

[0024] Figure 4 This is a schematic diagram of the structure of the lower knife assembly of a detachable knife sharpening device and a coffee machine according to the present utility model.

[0025] Figure 5 This is a schematic diagram of the structure of the inner fixing frame of a detachable knife sharpening device and a coffee machine according to the present utility model.

[0026] Figure 6 It is Figure 4 An enlarged schematic diagram of part A.

[0027] Figure 7 It is Figure 5 An enlarged schematic diagram of part B.

[0028] Figure 8 This is a schematic diagram of the structure of a detachable knife sharpening device and a coffee machine from another angle according to the present utility model. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0030] Such as Figures 1 to 8As shown in the figure, the present utility model proposes a detachable knife sharpening device and a coffee machine. The coffee machine includes a coffee machine main body and a knife sharpening device. The knife sharpening device includes a lower knife assembly 1 and an upper knife assembly 2. The lower knife assembly 1 includes a lower knife seat 11. The lower knife seat 11 is provided with at least one connecting block 15 and a snap ring 14. The connecting block 15 is provided with a connecting portion 152. The upper knife assembly 2 includes an inner fixing frame 21. The inner fixing frame 21 is provided with at least one matching block 25. The matching block 25 is provided with a matching portion 253 that is rotationally clamped with the connecting portion 152. The snap ring 14 is clamped with the matching block 25. The matching block 25 is located between the connecting block 15 and the snap ring 14. At least one anti-slip groove 141 is formed on the side wall of the snap ring 14. The matching block 25 is clamped between the connecting block 15 and the snap ring 14, thereby restricting the movement of the matching block 25 in the vertical direction. Through the clamping of the connecting portion 152 and the matching portion 253, the connecting portion 152 cannot easily rotate relative to the matching portion 253, so that the lower knife assembly 1 cannot easily be separated from the upper knife assembly 2, enhancing the stability of the overall structure. The connecting portion 152 and the matching portion 253 adopt a clamping method, and the user can easily detach the upper knife assembly 2 from the lower knife assembly 1 for cleaning, inspection or replacement of worn parts.

[0031] Further, as a preferred embodiment of the present invention rather than a limitation, a first inclined section 151 is provided at the bottom of the connecting block 15. The connecting portion 152 is a clamping groove provided on the first inclined section 151. A second inclined section 251 matching the inclination angle of the first inclined section 151 is provided at the top of the matching block 25. The matching portion 253 is a clamping block provided on the second inclined section 251. The designs of the first inclined section 151 and the second inclined section 251 are helpful for the connecting block 15 to align with the matching block 25. Specifically, when the connecting block 15 rotates and contacts the matching block 25, further the first inclined section 151 of the connecting block 15 contacts the second inclined section 251, and the connecting block 15 slides upward along the second inclined section 251, so that the connecting block 15 enters the set position until the matching portion 253 smoothly enters the connecting portion 152, avoiding damage that may be caused by hard docking. After the connecting portion 152 and the matching portion 253 are clamped, the connection between the connecting block 15 and the matching block 25 becomes firm.

[0032] Optionally, in some embodiments, the connecting portion 152 is a clamping block provided on the first inclined section 151, and the matching portion 253 is a clamping groove provided on the second inclined section 251 that is clamped with the clamping block.

[0033] Optionally, in some embodiments, the mating block 25 is provided with a mating portion 253 that magnetically connects to the connecting portion 152. The connecting portion 152 is a first magnet block provided on the first inclined section 151, and the mating portion 253 is a second magnet block provided on the second inclined section 251. The magnetic attraction between the first magnet block and the second magnet block ensures a tight connection between the connecting block 15 and the mating block 25, preventing the connecting block 15 from easily slipping off the mating block 25. The magnetic connection makes the disassembly and assembly process between the lower knife assembly 1 and the upper knife assembly 2 more convenient. Simply rotating the lower knife base 11 can achieve the connection or separation of the first magnet block and the second magnet block.

[0034] Further, as a preferred embodiment of the present invention rather than a limitation, one side of the mating block 25 is fixedly connected with a stop block 254. The stop block 254 is used to block the movement of the connecting block 15 in the direction of the stop block 254. One end of the mating block 25 is provided with a rounded corner section 252. The design of the stop block 254 ensures that the connecting block 15 does not exceed the predetermined position when connected to the mating block 25. When the connecting block 15 contacts the stop block 254, the connecting portion 152 and the mating portion 253 are in a clamped state, thus preventing the connecting block 15 from rotating excessively and causing the connecting portion 152 to disengage from the mating portion 253, improving the connection stability between the lower knife assembly 1 and the upper knife assembly 2 while facilitating the user to connect them.

[0035] Further, as a preferred embodiment of the present invention rather than a limitation, one end of the mating block 25 is provided with a rounded corner section 252. The rounded corner section 252 plays a guiding role, making it easier for the connecting block 15 to be inserted into the position of the mating block 25. At the same time, the rounded corner section 252 can also reduce the resistance during the assembly of the connecting block 15 and the mating block 25, making the whole process smoother.

[0036] Further, as a preferred embodiment of the present invention rather than a limitation, the snap ring 14 is located below the mating block 25, and the connecting block 15 is located above the mating block 25. The connecting block 15 and the snap ring 14 together form a space for carrying the mating block 25.

[0037] Further, as a preferred embodiment of the present invention rather than a limitation, the lower tool holder 11 is sleeved inside the inner fixing frame 21. The upper tool assembly 2 includes a housing 23 connected to the fixing frame 21. The housing 23 is provided with an insertion mark 17, and the lower tool holder 11 is provided with a position mark 18. When the position mark 18 points to the insertion mark 17, the connecting block 15 and the mating block 25 are in a disengaged state. The combined use of the insertion mark 17 and the position mark 18 enables the user to easily identify the positions for assembling and disassembling the lower tool assembly 1 and the upper tool assembly 2. When the position mark 18 points to the insertion mark 17, the user can clearly know that the connecting block 15 and the mating block 25 are completely separated at this time, and the lower tool assembly 1 can be easily separated from the upper tool assembly 2. Through the insertion mark 17 and the position mark 18, the user can quickly complete the disassembly and assembly operations of the lower tool assembly 1 and the upper tool assembly 2 without guessing or trying multiple times, avoiding damage or safety hazards caused by incorrect operations.

[0038] Further, as a preferred embodiment of the present invention rather than a limitation, the lower tool holder 11 is provided with a prompt mark 16 for indicating the loading and unloading direction of the lower tool holder 11. The prompt mark 16 can help the user clarify how to rotate the lower tool holder 11 to complete the loading and unloading operations. Specifically, during disassembly, the user first observes the prompt mark 16 to determine the loading and unloading direction, and further rotates the lower tool holder 11 until the position mark 18 aligns with the insertion mark 17. At this time, the clamping between the connecting block 15 and the mating block 25 is released, and the user can easily remove the upper tool assembly 2 from the lower tool assembly 1. During assembly, the lower tool holder 11 is inserted into the inner fixing frame 21, the position mark 18 aligns with the insertion mark 17, and further rotates the lower tool holder 11 according to the direction of the prompt mark 16 until the connecting block 15 and the mating block 25 are clamped in place again, thereby realizing the installation of the lower tool assembly 1 and the upper tool assembly 2.

[0039] Further, as a preferred embodiment of the present invention rather than a limitation, the top surface of the mating portion 253 is an arc surface. The arc surface can guide the mating portion 253 into the connecting portion 152, thereby reducing the resistance during assembly and making the assembly process smoother. The arc surface design can reduce the direct contact area between the mating portion 253 and the connecting portion 152, thereby reducing wear and extending the service life of the connecting portion and the mating portion.

[0040] Further, as a preferred embodiment of the present invention rather than a limitation, a lower knife rotating shaft 12 is installed in the lower knife seat 11. The lower knife assembly 1 includes a lower grinding wheel 13 sleeved outside the lower knife rotating shaft 12. The upper knife assembly 2 includes an upper grinding wheel 24. The lower grinding wheel 13 is arranged inside the upper grinding wheel 24. An upper knife support 22 is installed at the top of the upper grinding wheel 24. The upper knife support 22 is sleeved outside the lower knife rotating shaft 12 and is rotationally connected to the lower knife rotating shaft 12. The rotation of the lower grinding wheel 13 driven by the lower knife rotating shaft 12 inside the upper grinding wheel 24 can achieve the grinding of coffee beans inside the upper grinding wheel 24, turning the coffee beans into coffee powder. The connection of the lower knife assembly 1 and the upper knife assembly 2 through the lower knife rotating shaft 12 can ensure the concentricity of the two, thereby ensuring the stability and uniformity during the grinding process.

[0041] Further, as a preferred embodiment of the present invention rather than a limitation, the diameter of the bottom of the lower grinding wheel 13 is shorter than the inner diameter of the bottom of the upper grinding wheel 24. There is a gap between the lower grinding wheel 13 and the upper grinding wheel 24. The ground coffee powder moves downward through the gap and enters the lower knife seat 11, and is further discharged through the through holes provided in the lower knife seat 11. The coffee powder directly falls from the bottom of the lower grinding wheel 13 to the lower knife seat 11, reducing the powder channels and powder bins compared with traditional coffee grinders, thereby reducing residual powder.

[0042] Example 1:

[0043] A detachable knife sharpening device and a coffee machine. The coffee machine includes a coffee machine main body and a knife sharpening device. The knife sharpening device includes a lower knife assembly 1 and an upper knife assembly 2, characterized in that the lower knife assembly 1 includes a lower knife seat 11. The lower knife seat 11 is provided with at least one connecting block 15 and a snap ring 14. The connecting block 15 is provided with a connecting portion 152. The upper knife assembly 2 includes an inner fixing frame 21. The inner fixing frame 21 is provided with at least one fitting block 25. The fitting block 25 is provided with a fitting portion 253 that is rotationally clamped with the connecting portion 152. The snap ring 14 is clamped with the fitting block 25. The fitting block 25 is located between the connecting block 15 and the snap ring 14. At least one anti-slip groove 141 is provided on the side wall of the snap ring 14. The fitting block 25 is clamped between the connecting block 15 and the snap ring 14, thereby restricting the movement of the fitting block 25 in the vertical direction. Through the clamping of the connecting portion 152 and the fitting portion 253, the connecting portion 152 cannot easily rotate relative to the fitting portion 253, so that the lower knife assembly 1 cannot easily be separated from the upper knife assembly 2, enhancing the stability of the overall structure. The connecting portion 152 and the fitting portion 253 adopt a clamping method, and the user can easily detach the upper knife assembly 2 from the lower knife assembly 1 for cleaning, inspection or replacement of worn parts.

[0044] The bottom of the connection block 15 is provided with a first inclined section 151, the connection part 152 is a clamping groove arranged on the first inclined section 151, the top of the matching block 25 is provided with a second inclined section 251 whose inclination angle matches that of the first inclined section 151, and the matching part 253 is a clamping block arranged on the second inclined section 251. The design of the first inclined section 151 and the second inclined section 251 helps the connection block 15 to align with the matching block 25. Specifically, when the connection block 15 rotates and contacts the matching block 25, further, the first inclined section 151 of the connection block 15 contacts the second inclined section 251, and the connection block 15 slides upward along the second inclined section 251, so that the connection block 15 enters the set position until the matching part 253 smoothly enters the connection part 152, avoiding the damage that may be caused by hard docking. When the connection part 152 and the matching part 253 are clamped, the connection between the connection block 15 and the matching block 25 becomes stable.

[0045] One side of the matching block 25 is fixedly connected with a stop block 254, and the stop block 254 is used to block the connection block 15 from moving in the direction of the stop block 254. One end of the matching block 25 is provided with a rounded corner section 252. The design of the stop block 254 ensures that the connection block 15 will not exceed the predetermined position when connected to the matching block 25. When the connection block 15 contacts the stop block 254, the connection part 152 and the matching part 253 are in a clamped state, thereby preventing the connection block 15 from rotating excessively and causing the connection part 152 to disengage from the matching part 253, improving the connection stability of the lower knife assembly 1 and the upper knife assembly 2 while facilitating the user to connect the lower knife assembly 1 and the upper knife assembly 2.

[0046] One end of the matching block 25 is provided with a rounded corner section 252. The rounded corner section 252 can play a guiding role, making it easier for the connection block 15 to be inserted into the position of the matching block 25. At the same time, the rounded corner section 252 can also reduce the resistance during the assembly of the connection block 15 and the matching block 25, making the whole process smoother.

[0047] The snap ring 14 is located below the matching block 25, the connection block 15 is located above the matching block 25, and the connection block 15 and the snap ring 14 jointly form a space for carrying the matching block 25.

[0048] The lower tool holder 11 is sleeved inside the inner fixing frame 21. The upper tool assembly 2 includes a housing 23 connected to the fixing frame 21. The housing 23 is provided with an insertion mark 17, and the lower tool holder 11 is provided with a position mark 18. When the position mark 18 points to the insertion mark 17, the connecting block 15 and the mating block 25 are in a disconnected state. The combined use of the insertion mark 17 and the position mark 18 enables users to easily identify the positions for assembling and disassembling between the lower tool assembly 1 and the upper tool assembly 2. When the position mark 18 points to the insertion mark 17, users can clearly know that the connecting block 15 and the mating block 25 are completely separated at this time, and the lower tool assembly 1 can be easily separated from the upper tool assembly 2. Through the insertion mark 17 and the position mark 18, users can quickly complete the disassembly and assembly operations of the lower tool assembly 1 and the upper tool assembly 2 without guessing or trying multiple times, avoiding damage or safety hazards caused by incorrect operations.

[0049] The lower tool holder 11 is provided with a prompt mark 16 for indicating the loading and unloading direction of the lower tool holder 11. The prompt mark 16 can help users clarify how to rotate the lower tool holder 11 to complete the loading and unloading operations. Specifically, during disassembly, users first observe the prompt mark 16 to determine the loading and unloading direction, and further rotate the lower tool holder 11 until the position mark 18 aligns with the insertion mark 17. At this time, the clamping connection between the connecting block 15 and the mating block 25 is released, and users can easily remove the upper tool assembly 2 from the lower tool assembly 1. During assembly, the lower tool holder 11 is inserted into the inner fixing frame 21, the position mark 18 aligns with the insertion mark 17, and then, according to the direction of the prompt mark 16, the lower tool holder 11 is rotated until the connecting block 15 and the mating block 25 are clamped in place again, thereby realizing the installation of the lower tool assembly 1 and the upper tool assembly 2.

[0050] The top surface of the mating portion 253 is an arc surface. The arc surface can guide the mating portion 253 into the connecting portion 152, thereby reducing the resistance during assembly and making the assembly process smoother. The arc surface design can reduce the direct contact area between the mating portion 253 and the connecting portion 152, thereby reducing wear and extending the service life of the connecting portion and the mating portion.

[0051] The implementation manner of the second embodiment is as follows:

[0052] The difference between the second embodiment and the first embodiment is that the mating block 25 is provided with a mating portion 253 magnetically connected to the connecting portion 152. The connecting portion 152 is a first magnet block provided on the first inclined section 151, and the mating portion 253 is a second magnet block provided on the second inclined section 251. Through the magnetic attraction between the first magnet block and the second magnet block, the tight connection between the connecting block 15 and the mating block 25 is ensured, and the connecting block 15 is prevented from slipping off the mating block 25 easily. The magnetic connection can make the disassembly and assembly process between the lower knife assembly 1 and the upper knife assembly 2 more convenient. Just rotating the lower knife seat 11 can realize the connection or separation of the first magnet block and the second magnet block.

[0053] The implementation manner of the third embodiment is as follows:

[0054] The difference between the third embodiment and the first embodiment is that the connecting portion 152 is a clamping block provided on the first inclined section 151, and the mating portion 253 is a clamping groove provided on the second inclined section 251 and clamped with the clamping block.

[0055] The implementation manner of the fourth embodiment is as follows:

[0056] The difference between the fourth embodiment and the first embodiment is that a lower knife rotating shaft 12 is installed in the lower knife seat 11. The lower knife assembly 1 includes a lower grinding wheel 13 sleeved outside the lower knife rotating shaft 12. The upper knife assembly 2 includes an upper grinding wheel 24. The lower grinding wheel 13 is arranged inside the upper grinding wheel 24. An upper knife support 22 is installed at the top of the upper grinding wheel 24. The upper knife support 22 is sleeved outside the lower knife rotating shaft 12 and rotatably connected to the lower knife rotating shaft 12. The rotation of the lower knife rotating shaft 12 driving the lower grinding wheel 13 inside the upper grinding wheel 24 can realize the grinding of the coffee beans inside the upper grinding wheel 24, turning the coffee beans into coffee powder. The connection of the lower knife assembly 1 and the upper knife assembly 2 through the lower knife rotating shaft 12 can ensure the concentricity of the two, thus ensuring the stability and uniformity during the grinding process.

[0057] The diameter of the bottom of the lower grinding wheel 13 is shorter than the inner diameter of the bottom of the upper grinding wheel 24. There is a gap between the lower grinding wheel 13 and the upper grinding wheel 24. The ground coffee powder moves downward through the gap and enters the lower knife seat 11, and further is discharged through the through hole opened in the lower knife seat 11. The coffee powder directly falls from the bottom of the lower grinding wheel 13 to the lower knife seat 11, reducing the powder path and powder bin compared with the traditional coffee grinder, so that the residual powder can be reduced.

[0058] Specifically, the working principle of the present utility model is as follows:

[0059] The lower knife assembly 1 and the upper knife assembly 2 are used in cooperation. By the rotation of the lower grinding wheel 13 within the upper grinding wheel 24, the grinding of coffee beans within the upper grinding wheel 24 can be achieved, turning the coffee beans into coffee powder. When there is a situation of coffee bean jamming and it is necessary to clean, inspect, or replace the coffee bean grinding components of the lower knife assembly 1 and the upper knife assembly 2, according to the prompt mark 16, determine the loading and unloading direction, and further rotate the lower knife seat 11 until the position mark 18 on the lower knife seat 11 aligns with the insertion mark 17 on the housing 23. At this time, the connecting block 15 and the mating block 25 have been completely separated, so that the lower knife assembly 1 can be easily separated from the upper knife assembly 2.

[0060] After removing the lower knife assembly 1 from the upper knife assembly 2, the internal structures of the lower knife assembly and the upper knife assembly 2 will be exposed, facilitating the user to clean the jammed coffee beans.

[0061] During assembly, the lower knife seat 11 is inserted into the inner fixing frame 21, with the position mark 18 aligning with the insertion mark 17. Further, according to the direction of the prompt mark 16, rotate the lower knife seat 11 until the connecting block 15 and the mating block 25 are engaged again in place, thus realizing the installation of the lower knife assembly 1 and the upper knife assembly 2.

[0062] In summary, the present utility model solves the problem that the knife sharpening device of the traditional coffee machine is not convenient for cleaning after coffee bean jamming.

[0063] It should be understood that in the present utility model, terms such as "first" and "second" are used to describe various information, but these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present utility model, "first" information can also be called "second" information, and similarly, "second" information can also be called "first" information. In addition, the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0064] The above is the preferred embodiment of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and deformations can still be made, and these improvements and deformations are also regarded as the protection scope of the present utility model.

Claims

1. A detachable knife sharpening device, comprising a lower knife assembly (1) and an upper knife assembly (2), characterized in that, The lower knife assembly (1) includes a lower knife base (11). The lower knife base (11) is provided with at least one connecting block (15) and a snap ring (14). The connecting block (15) is provided with a connecting portion (152). The upper knife assembly (2) includes an inner fixing frame (21). The inner fixing frame (21) is provided with at least one fitting block (25). The fitting block (25) is provided with a fitting portion (253) that is rotationally clamped with the connecting portion (152). The snap ring (14) is clamped with the fitting block (25).

2. The detachable knife sharpening device according to claim 1, characterized in that, The bottom of the connecting block (15) is provided with a first inclined section (151). The connecting portion (152) is a card slot provided in the first inclined section (151). The top of the fitting block (25) is provided with a second inclined section (251) whose inclination angle matches that of the first inclined section (151). The fitting portion (253) is a clamping block provided in the second inclined section (251).

3. The detachable knife sharpening device according to claim 1, characterized in that, One side of the fitting block (25) is fixedly connected with a stop block (254). The stop block (254) is used to block the connecting block (15) from moving in the direction of the stop block (254).

4. A detachable knife sharpening device according to claim 1, wherein, One end of the fitting block (25) is provided with a rounded corner section (252).

5. A detachable knife sharpening device according to claim 1, characterized in that, The snap ring (14) is located below the fitting block (25), and the connecting block (15) is located above the fitting block (25). The connecting block (15) and the snap ring (14) together form a space for carrying the fitting block (25).

6. A detachable knife sharpening device according to claim 2, wherein, The top surface of the fitting portion (253) is an arc surface.

7. A detachable knife sharpening device according to claim 1, wherein, A lower knife rotating shaft (12) is installed in the lower knife base (11). The lower knife assembly (1) includes a lower grinding wheel (13) sleeved outside the lower knife rotating shaft (12). The upper knife assembly (2) includes an upper grinding wheel (24). The lower grinding wheel (13) is arranged inside the upper grinding wheel (24). The upper knife bracket (22) is installed at the top of the upper grinding wheel (24). The upper knife bracket (22) is sleeved outside the lower knife rotating shaft (12) and is rotatably connected with the lower knife rotating shaft (12).

8. A detachable knife sharpening device according to claim 7, wherein, The diameter of the bottom of the lower grinding wheel (13) is shorter than the inner diameter of the bottom of the upper grinding wheel (24).

9. The detachable knife sharpening device according to claim 1, characterized in that, At least one anti-slip groove (141) is formed in the side wall of the snap ring (14).

10. Coffee machine, characterized in that, It includes a coffee machine main body and a knife sharpening device according to any one of claims 1-9.

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