Adjustable grinding machine and coffee machine

Abstract

The utility model discloses an adjustable grinding machine and a coffee machine. The grinding machine comprises a base, a first grinding piece, a second grinding piece and an adjusting assembly. The base is provided with an accommodating cavity; the first grinding piece and the second grinding piece are both arranged in the containing cavity, and the second grinding piece and the first grinding piece are oppositely arranged and provided with a grinding gap; the adjusting assembly is installed on the base and used for driving the first grinding piece and the second grinding piece to move relatively so as to change the grinding gap. The adjusting assembly comprises an outer rotating part, an inner rotating part and a moving part, the outer rotating part drives the inner rotating part to rotate, the inner rotating part drives the moving part to move, and the first grinding part or the second grinding part is connected with the moving part and synchronously moves along with the moving part. According to the adjustable grinding machine, the outer rotating part drives the inner rotating part to rotate, the inner rotating part drives the moving part to move, the first grinding part or the second grinding part is connected with the moving part and synchronously moves along with the moving part, the grinding gap is changed, and the powder outlet amount and the powder thickness are adjusted.

Description

Technical Field

[0001] This utility model relates to the field of coffee machine technology, and in particular to an adjustable grinder and coffee machine. Background Technology

[0002] Coffee powder is primarily derived from ground coffee beans. As people's demands for coffee quality increase, freshly ground coffee has become more accepted and favored by consumers. The coarseness of the coffee powder is one of the important factors determining the quality and flavor of coffee. Most existing coffee machines are equipped with coffee bean grinders for grinding coffee powder, but these grinders are inconvenient to adjust in terms of grind size and output. Furthermore, the grind size and output adjustment mechanisms in some existing coffee machines are complex in structure, inconvenient to operate, and result in a poor user experience. Utility Model Content

[0003] In order to overcome at least one of the defects of the prior art, the present invention provides an adjustable grinding machine, which drives an inner rotating component to rotate through an outer rotating component, and the inner rotating component drives a moving component to move. A first grinding component or a second grinding component is connected to the moving component and moves synchronously with the moving component, thereby changing the grinding gap and adjusting the powder output and the fineness of the powder.

[0004] In order to overcome at least one of the defects described in the prior art, the present invention provides a coffee machine equipped with the aforementioned adjustable grinder, which enables the coffee machine to obtain coffee powder of different coarseness and adjust the powder output as needed.

[0005] The technical solution adopted by this utility model to solve its problem is:

[0006] An adjustable grinding machine, characterized in that: it includes...

[0007] The base has a receiving cavity;

[0008] The first grinding element is disposed within the accommodating cavity;

[0009] The second grinding element is disposed in the accommodating cavity, and the second grinding element is disposed opposite to the first grinding element and has a grinding gap;

[0010] An adjustment component is mounted on the base and is used to drive the first grinding element and the second grinding element to move relative to each other to change the grinding gap.

[0011] The adjustment assembly includes an outer rotating component, an inner rotating component, and a moving component. The outer rotating component drives the inner rotating component to rotate, and the inner rotating component drives the moving component to move. The first grinding component or the second grinding component is connected to the moving component and moves synchronously with the moving component.

[0012] Furthermore: the first grinding element is sleeved on the outside of the second grinding element, and the first grinding element has a first grinding part arranged on the circumferential surface facing the second grinding element, and the second grinding element has a second grinding part arranged on the circumferential surface facing the first grinding element, and the grinding gap is formed between the first grinding part and the second grinding part.

[0013] Furthermore: the second grinding part is located to the side and below the first grinding part; as the first grinding member moves downward along its axial direction, the first grinding part moves downward closer to the second grinding part, and the grinding gap decreases; as the first grinding member moves upward along its axial direction, the first grinding part moves downward away from the second grinding part, and the grinding gap increases.

[0014] Furthermore: the outer rotating component is rotatably mounted on the base and coaxially sleeved with the inner rotating component, and the inner rotating component is coaxially sleeved with the first grinding component; a first connecting component is provided between the outer rotating component and the inner rotating component to fixally connect the outer rotating component and the inner rotating component.

[0015] Further: The first connecting member includes a limiting protrusion and a limiting tooth. The limiting protrusion is arranged on the circumferential surface of the outer rotating member facing the inner rotating member, and the limiting tooth is arranged on the circumferential surface of the inner rotating member facing the outer rotating member. A limiting groove with a width adapted to the width of the limiting tooth is formed between two adjacent limiting teeth, and the limiting protrusion is placed in the limiting groove. When the outer rotating member rotates, the inner rotating member is driven to rotate by the limiting protrusion and the limiting tooth.

[0016] Furthermore: at least two of the limiting protrusions are evenly distributed on the circumferential surface of the outer rotating member facing the inner rotating member; the limiting teeth are evenly distributed on the circumferential surface of the inner rotating member facing the outer rotating member.

[0017] Furthermore, a first limiting block is provided on the circumferential surface of the outer rotating component facing the inner rotating component, and the first limiting block is positioned above the inner rotating component and abuts against the top surface of the inner rotating component.

[0018] Furthermore: the base is provided with a support member and a limiting claw, the outer rotating member has an inner ring and an outer ring connected as one piece, and an annular cavity is formed between the inner ring and the outer ring;

[0019] The inner rotating component is placed inside the annular cavity;

[0020] The support member is ring-shaped and is positioned below the inner ring to support it. The inner circumferential surface of the inner ring faces the moving member and is used to guide the moving member. The support member is positioned between the inner rotating member and the moving member and guides the movement of the moving member.

[0021] A limiting ring is provided on the outer circumferential surface of the outer ring, and the limiting claw is placed on the limiting ring and presses the outer rotating part against the base.

[0022] Furthermore: the inner rotating component and the moving component are coaxially sleeved together, and a second connecting component is provided between the inner rotating component and the moving component. The second connecting component converts the rotational motion of the inner rotating component into the up-and-down movement of the moving component.

[0023] Further: the second connecting member includes a thread disposed on the circumferential surface of the inner rotating member facing the moving member, a guide groove disposed on the support member, and a second limiting block disposed on the circumferential surface of the moving member facing the inner rotating member. The second limiting block passes through the guide groove and engages with the thread. The rotation of the thread drives the moving member to move along the axial direction of the inner rotating member.

[0024] Further: the moving part includes a first moving part and a second moving part sleeved inside the first moving part, the first moving part is connected to the inner rotating part and directly driven by the inner rotating part, and the second moving part is connected to the first grinding part;

[0025] A third connecting member is provided between the first moving member and the second moving member to achieve a fixed connection between the first moving member and the second moving member.

[0026] Furthermore: the third connecting member includes a third limiting block and a limiting groove, the third limiting block is placed in the limiting groove, and the limiting groove realizes the limiting of the third limiting block in the circumferential and axial directions of the first moving member;

[0027] The third limiting block is disposed on the circumferential surface of the first moving member facing the second moving member, and the limiting groove is disposed on the circumferential surface of the second moving member facing the first moving member;

[0028] Alternatively, the limiting groove is disposed on the circumferential surface of the first moving member facing the second moving member, and the third limiting block is disposed on the circumferential surface of the second moving member facing the first moving member.

[0029] Furthermore, a guide ring is provided on the first moving part at the bottom position of the second moving part. The inner circumferential surface of the guide ring contacts the outer circumferential surface of the first grinding part and guides the movement of the first grinding part.

[0030] Furthermore: the second moving part is sleeved on the outside of the first grinding part, and the second moving part is provided with a pressure ring, a first limiting part and a limiting protrusion on the circumferential surface of the first grinding part. The pressure ring and the limiting protrusion are arranged opposite to each other to restrict the up and down movement of the first grinding part, and the first limiting part restricts the circumferential movement of the first grinding part.

[0031] Furthermore: a connecting ring is provided on the outer peripheral surface of the first grinding part, the connecting ring is placed between the pressure ring and the limiting protrusion, and a second limiting part is provided on the connecting ring that is adapted to the first limiting part, the first limiting part and the second limiting part cooperate.

[0032] Furthermore, the adjustable grinder also includes a powder outlet channel disposed on the base, one end of which is disposed on the bottom surface of the receiving cavity and located below the first grinding element and the second grinding element, and the other end of which is inclined downward and extends out of the base.

[0033] A coffee machine including the aforementioned adjustable grinder.

[0034] In summary, the adjustable grinding machine provided by this utility model has the following technical effects:

[0035] 1. An adjustment component is set up to adjust the grinding gap between the first grinding piece and the second grinding piece, so as to obtain powders of different coarseness and adjust the powder output.

[0036] 2. The position and structure of the first and second grinding parts enable the adjustment of the powder output and powder fineness while adjusting the grinding gap.

[0037] 3. The first connecting part enables the outer rotating part to drive the inner rotating part to rotate. The inner rotating part and the outer rotating part are nested together, resulting in a compact structure and reliable drive.

[0038] 4. The support component is set on the base, which is compact in structure and guides the movement of the moving component, ensuring that the movement of the moving component is more stable.

[0039] 5. The first grinding piece moves synchronously with the moving part, ensuring smooth and reliable movement and effectively avoiding problems such as shaking or tilting during the movement of the first grinding piece.

[0040] In summary, the coffee machine provided by this utility model has the following technical effects: This coffee machine is equipped with the aforementioned adjustable grinder, which enables the coffee machine to obtain coffee powder of different coarseness and adjust the powder output as needed, thereby improving the user experience. Attached Figure Description

[0041] Figure 1This is a schematic diagram of one embodiment of an adjustable grinding machine according to the present invention.

[0042] Figure 2 for Figure 1 Top view.

[0043] Figure 3 This is a schematic diagram of the base structure.

[0044] Figure 4 for Figure 3 Top view.

[0045] Figure 5 This is a schematic diagram of the second grinding component.

[0046] Figure 6 This is a diagram showing the positional relationship between the first and second grinding components after installation.

[0047] Figure 7 To adjust the cross-sectional view of the component.

[0048] Figure 8 This is a schematic diagram of the installation of the internal rotating component.

[0049] Figure 9 This is a schematic diagram of the installation of the first moving component.

[0050] Figure 10 This is a schematic diagram of the external rotating component.

[0051] Figure 11 This is a schematic diagram of the internal rotating component.

[0052] Figure 12 This is a schematic diagram of the first moving component.

[0053] Figure 13 for Figure 12 The main view.

[0054] Figure 14 This is a schematic diagram of the second moving part.

[0055] Figure 15 This is a schematic diagram of the internal structure of the second moving part.

[0056] Figure 16 This is a schematic diagram of the first grinding component.

[0057] The meanings of the reference numerals in the attached figures are as follows:

[0058] 1. First grinding component; 11. First grinding section; 12. Second limiting section; 13. Connecting ring; 2. Second grinding component; 21. Second grinding section; 22. Sweeping disc; 23. Drive spindle;

[0059] 3. Base; 31. Limiting claw; 32. Powder outlet channel; 33. Guide groove;

[0060] 4. Outer rotating component; 41. Outer ring; 42. Inner ring; 43. Limiting protrusion; 44. First limiting block; 45. Limiting ring;

[0061] 5. Internal rotating component; 51. Limiting tooth; 52. Limiting groove; 53. Thread;

[0062] 6. Support components;

[0063] 7. First moving component; 71. Second limiting block; 72. Third limiting block; 73. Guide ring;

[0064] 8. Second moving part; 81. Limiting groove; 82. First limiting part; 83. Pressure ring; 84. Limiting protrusion. Detailed Implementation

[0065] 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.

[0066] In the description of this utility model, 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 utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0067] 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 is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0068] See Figure 1 and Figure 2 This utility model discloses an adjustable grinder, which allows for adjustment of the coarseness of the ground powder and the output powder. Generally, the coarser the powder, the greater the output powder per unit time, which meets people's usage habits and needs, improving user comfort and convenience. The structure and working process of an adjustable grinder are described in detail below.

[0069] like Figure 1 and Figure 7As shown, an adjustable grinder includes a base 3, a first grinding element 1, a second grinding element 2, and an adjustment assembly. The base 3 has a receiving cavity, in which the first grinding element 1 and the second grinding element 2 are both disposed. The second grinding element 2 is disposed opposite to the first grinding element 1 and has a grinding gap. During grinding, the material is placed in the grinding gap, and relative movement occurs between the first grinding element 1 and the second grinding element 2, thereby grinding the material.

[0070] The adjustment component is installed on the base 3. The adjustment component is used to drive the first grinding element 1 and the second grinding element 2 to move relative to each other, so as to change the grinding gap, thereby changing the coarseness and output of the powder produced by the material being ground in the grinding gap.

[0071] In the above scheme, the adjustment component includes an outer rotating part 4, an inner rotating part 5, and a moving part. The outer rotating part 4 drives the inner rotating part 5 to rotate, and the inner rotating part 5 drives the moving part to move. The first grinding part 1 or the second grinding part 2 is connected to the moving part and moves synchronously with the moving part.

[0072] The first grinding element 1 or the second grinding element 2 is connected to the moving element and moves synchronously with the moving element, so that the first grinding element 1 or the second grinding element 2 moves relative to the second grinding element or the first grinding element, thereby changing the size of the grinding gap and thus adjusting the fineness and output of the grinding powder.

[0073] In the above scheme, the grinding gap is adjusted by the external rotating part, which is simple to operate. During the adjustment, the first grinding part 1 or the second grinding part 2 is connected to the moving part and moves synchronously with the moving part, so that the adjustment is reliable and the first grinding part or the second grinding part moves stably.

[0074] In this technical solution, such as Figure 6 As shown, a first grinding element 1 is sleeved outside a second grinding element 2, and a first grinding portion 11 is arranged on the circumferential surface of the first grinding element 1 facing the second grinding element 2. A second grinding portion 21 is arranged on the circumferential surface of the second grinding element 2 facing the first grinding element 1. A grinding gap is formed between the first grinding portion 11 and the second grinding portion 21. The sleeved arrangement of the first and second grinding elements makes the overall structure of the grinding machine compact, achieving miniaturization and lightweighting of the grinding machine. The sleeved arrangement of the first and second grinding elements results in a large contact area between the first grinding portion and the second grinding portion, leading to high grinding efficiency.

[0075] In this technical solution, such as Figure 6As shown, the second grinding section 21 is located to the side and below the first grinding section 11. As the first grinding element 1 moves downward along its axial direction, the first grinding section 11 moves downward closer to the second grinding section 21, reducing the grinding gap. As the first grinding element 1 moves upward along its axial direction, the first grinding section 11 moves downward away from the second grinding section 21, increasing the grinding gap. The second grinding section 21, located to the side and below the first grinding section 11, allows for adjustment of the grinding gap size as the first grinding element 1 moves along its axial direction, thus adjusting both the coarseness and the powder output. The positioning of the first and second grinding sections simplifies the adjustment method and process, allowing for the adjustment of both parameters in a single operation. Generally, when coarsening the powder, the powder output also increases, ensuring smooth powder output and preventing the grinder from jamming, stuck, or clogging.

[0076] In this technical solution, such as Figure 8 and Figure 9 As shown, the outer rotating component 4 is rotatably mounted on the base 3 and coaxially sleeved with the inner rotating component 5, which is coaxially sleeved with the first grinding component 1. A first connecting component is provided between the outer rotating component 4 and the inner rotating component 5 to fix them together. The first connecting component fixes the outer rotating component 4 and the inner rotating component 5, so that when the outer rotating component is rotated, its rotational motion can be synchronously transmitted to the inner rotating component, allowing the inner and outer rotating components to rotate synchronously. This avoids slippage or other relative movements between the outer and inner rotating components, ensuring stable and reliable adjustment and precise control of the adjustment amount.

[0077] In this technical solution, such as Figure 10 and Figure 11 As shown, the first connecting member includes a limiting protrusion 43 and a limiting tooth 51. The limiting protrusion 43 is arranged on the circumferential surface of the outer rotating member 4 facing the inner rotating member 5, and the limiting tooth 51 is arranged on the circumferential surface of the inner rotating member 5 facing the outer rotating member 4. A limiting groove 52 with a width adapted to the width of the limiting tooth 51 is formed between two adjacent limiting teeth 51, and the limiting protrusion 43 is placed in the limiting groove 52. When the outer rotating member 4 rotates, the inner rotating member 5 is driven to rotate through the limiting protrusion 43 and the limiting tooth 51.

[0078] The fixed connection between the outer rotating component and the inner rotating component is achieved through the structure of the limiting protrusion 43 and the limiting tooth 51, enabling the outer rotating component to synchronously drive the inner rotating component to rotate. Simultaneously, the limiting tooth 51 on the outer circumferential surface of the inner rotating component increases the compatibility between the inner and outer rotating components and facilitates the outer rotating component driving the inner rotating component to rotate. Furthermore, the limiting tooth 51 also guides and supports the outer rotating component, ensuring stable installation, maintaining balance, and smoothly and stably driving the inner rotating component.

[0079] like Figure 10 and Figure 11 As shown, at least two limiting protrusions 43 are evenly distributed on the circumferential surface of the outer rotating component 4 facing the inner rotating component 5, improving the connection stability between the outer and inner rotating components. Limiting teeth 51 are evenly distributed on the circumferential surface of the inner rotating component 5 facing the outer rotating component 4, forming a limiting groove 52 between adjacent limiting teeth, facilitating the docking and installation of the outer and inner rotating components. Furthermore, limiting teeth are evenly distributed on the outer circumferential surface of the inner rotating component to support the outer rotating component.

[0080] In this technical solution, such as Figure 7 and Figure 10 As shown, a first limiting block 44 is also provided on the circumferential surface of the outer rotating component 4 facing the inner rotating component 5. The first limiting block 44 is positioned above the inner rotating component 5 and abuts against the top surface of the inner rotating component 5. The first limiting block 44, which abuts against the upper surface of the inner rotating component, achieves the positioning of the outer rotating component and the inner rotating component in the axial direction, preventing the inner rotating component from excessively pressing against the outer rotating component during rotation, thus affecting the normal rotation and operation of the inner rotating component. At the same time, the first limiting block 44 also limits the installation position of the outer rotating component.

[0081] like Figure 3 , Figure 7 , Figure 10 As shown, the base 3 is provided with a support member 6 and a limiting claw 31. Preferably, the support member and the limiting claw are integrally formed with the base, which has a simple structure, low cost, is easy to form, and improves the strength of the support member and the limiting claw.

[0082] The outer rotating component 4 has an inner ring 42 and an outer ring 41 connected as one piece, and an annular cavity is formed between the inner ring 42 and the outer ring 41. For example... Figure 7 As shown, the inner rotating part 5 is placed inside the annular cavity, which reduces the space between the outer rotating part and the connection between the outer rotating part, thus reducing the volume of the grinding machine.

[0083] The support member 6 is annular and positioned below and supports the inner ring 42. The support member 6 ensures the proper installation position of the outer rotating member, especially along the axial direction, preventing excessive pressure from the outer rotating member on the inner rotating member, which could affect the balance and smooth rotation of the inner rotating member. The inner circumferential surface of the inner ring 42 faces the moving member and guides it, ensuring stable, smooth, and reliable movement of the moving member along the axial direction, preventing wobbling or deviation during movement. The support member 6 is positioned between the inner rotating member 5 and the moving member, guiding the movement of the moving member, isolating the inner rotating member and the connecting member, and providing bidirectional guidance to ensure reliable movement of the moving member driven by the inner rotating member.

[0084] A limiting ring 45 is provided on the outer circumference of the outer ring, and a limiting claw 31 is placed on the limiting ring 45 to press the outer rotating part 4 against the base 3. The limiting claw 31 limits the outer rotating part in the axial direction, preventing the outer rotating part from detaching from the base along the axial direction, and ensuring that the outer rotating part is stably and reliably installed on the base.

[0085] In this technical solution, such as Figure 11 and Figure 12 As shown, the inner rotating component 5 and the moving component are coaxially sleeved. A second connecting component is provided between the inner rotating component 5 and the moving component. The second connecting component converts the rotational motion of the inner rotating component 5 into the up-and-down movement of the moving component. The second connecting component connects the inner rotating component and the moving component, and at the same time converts the rotational motion of the inner rotating component into the up-and-down movement of the moving component, realizing the change of motion direction and ensuring that the inner rotating component stably drives the moving component to move.

[0086] In this technical solution, such as Figure 9 , Figure 11 and Figure 12 As shown, the second connecting member includes a thread 53 disposed on the circumferential surface of the inner rotating member 5 facing the moving member, a guide groove 33 disposed on the support member 6, and a second limiting block 71 disposed on the circumferential surface of the moving member facing the inner rotating member 5. The second limiting block 71 passes through the guide groove 33 and engages with the thread 53. The rotation of the thread 53 drives the moving member to move along the axial direction of the inner rotating member 5.

[0087] The first limiting block is driven by a thread. When the screw rotates, the second limiting block moves only up and down under the limiting action of the guide groove 33. That is, the moving part moves up and down, and the drive structure is simple and reliable. The thread drive can realize stepless adjustment of the up and down movement of the moving part, thereby realizing stepless adjustment of the grinding gap, and stepless adjustment of powder fineness and powder output.

[0088] In this technical solution, such as Figure 7 As shown, the moving parts include a first moving part 7 and a second moving part 8 sleeved inside the first moving part 7. The first moving part 7 is connected to and directly driven by the inner rotating part 5, and the second moving part 8 is connected to the first grinding part 1. A second limiting block 71 is disposed on the circumferential surface of the first moving part 7 facing the inner rotating part.

[0089] A third connecting member is provided between the first moving member 7 and the second moving member 8 to achieve a fixed connection between the first moving member 7 and the second moving member 8.

[0090] The third connector securely connects the first and second moving parts, ensuring that the first moving part moves under the drive of the inner rotating part, synchronously driving the second moving part, and thus synchronously driving the first grinding piece to move, thereby changing the grinding gap size. The inclusion of the first and second moving parts facilitates the installation and fixation of the first grinding piece.

[0091] In this technical solution, such as Figure 12 and Figure 14 As shown, the third connecting member includes a third limiting block 72 and a limiting groove 81. The third limiting block 72 is placed in the limiting groove 81, and the limiting groove 81 limits the third limiting block 72 in the circumferential and axial directions of the first moving member, ensuring that the first moving member moves. The third limiting block and the limiting groove drive the second moving member to move synchronously, and there is no relative movement between the first moving member and the second moving member.

[0092] In the above scheme, the third limiting block 72 is disposed on the circumferential surface of the first moving member 7 facing the second moving member 8, and the limiting groove 81 is disposed on the circumferential surface of the second moving member 8 facing the first moving member 7. Alternatively, the limiting groove 81 is disposed on the circumferential surface of the first moving member 7 facing the second moving member 8, and the third limiting block 72 is disposed on the circumferential surface of the second moving member 8 facing the first moving member 7.

[0093] In this technical solution, such as Figure 7 As shown, a guide ring 73 is provided on the first moving part 7, located at the bottom of the second moving part 8. The inner circumferential surface of the guide ring 73 contacts the outer circumferential surface of the first grinding part 1 and guides the movement of the first grinding part 1. The guide ring 73 guides and limits the first grinding part, ensuring its stability and smoothness during the grinding process. It also ensures the balance and stability of the first grinding part during movement, preventing wobbling or displacement during grinding or movement.

[0094] In this technical solution, such as Figure 15 and Figure 16 As shown, the second moving part 8 is sleeved outside the first grinding part 1, and a pressure ring 83, a first limiting part 82, and a limiting protrusion 84 are provided on the circumferential surface of the second moving part 8 facing the first grinding part 1. The pressure ring 83 and the limiting protrusion 84 are arranged opposite to each other to restrict the up and down movement of the first grinding part 1, ensuring that the first grinding part moves synchronously with the second moving part, thereby realizing the adjustment of the grinding gap between the first grinding part and the second grinding part. The first limiting part 82 restricts the circumferential movement of the first grinding part 11, preventing relative rotation between the first grinding part and the second moving part, ensuring that the first grinding part moves synchronously with the second moving part, and ensuring the stable and reliable adjustment of the first grinding part.

[0095] In this technical solution, a connecting ring 13 is provided on the outer peripheral surface of the first grinding part 1. The connecting ring 13 is positioned between the pressure ring 83 and the limiting protrusion 84. A second limiting part 12 adapted to the first limiting part 82 is provided on the connecting ring 13, and the first limiting part 82 and the second limiting part 12 cooperate with each other. The connection ring and the pressure ring enable a reliable connection between the first grinding part and the second moving part, ensuring that the first grinding part reliably drives the second moving part and ensuring synchronous movement of the first grinding part and the second moving part.

[0096] In this technical solution, the adjustable grinder also includes a powder outlet channel 32 disposed on the base 3. One end of the powder outlet channel 32 is disposed on the bottom surface of the receiving cavity and located below the first grinding element 1 and the second grinding element 2. The other end of the powder outlet channel 32 is inclined downward and extends out of the base 3. The downwardly inclined powder outlet channel 32 simplifies the structure of the powder outlet channel 32, facilitates powder collection in the powder receiving box, and facilitates rinsing of the grinder.

[0097] The adjustable grinder of this solution drives the second grinding element 2 to rotate via the drive spindle 23, causing the second grinding element 2 to rotate relative to the first grinding element 1. The second grinding section 21 and the first grinding section 11 also rotate relative to each other, thus grinding the material within the grinding gap. During grinding, the sweeping disc 22 installed at the bottom of the second grinding element 2 rotates synchronously, scraping the material within the grinding gap to ensure that all material within the gap is ground. Simultaneously, the ground fine powder is scraped by the sweeping disc 22 to the powder outlet channel 32 and discharged through it.

[0098] It should be noted that the change in grinding gap mentioned in this solution generally refers to changing the minimum gap size of the grinding gap in the previous state. The minimum gap size is the determining factor to ensure the fineness of the ground powder and the powder output.

[0099] A coffee machine includes the aforementioned adjustable grinder. This allows the coffee machine to produce coffee powder of varying coarseness and adjust the powder output as needed, thereby improving the user experience.

[0100] The technical means disclosed in this utility model 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 principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. An adjustable grinding machine, characterized in that: include The base has a receiving cavity; The first grinding element is disposed within the accommodating cavity; The second grinding element is disposed in the accommodating cavity, and the second grinding element is disposed opposite to the first grinding element and has a grinding gap; Adjustment components; Mounted on the base, the adjustment component is used to drive the first grinding element and the second grinding element to move relative to each other, so as to change the grinding gap; The adjustment assembly includes an outer rotating component, an inner rotating component, and a moving component. The outer rotating component drives the inner rotating component to rotate, and the inner rotating component drives the moving component to move. The first grinding component or the second grinding component is connected to the moving component and moves synchronously with the moving component.

2. The adjustable grinding machine according to claim 1, characterized in that: The first grinding element is sleeved on the outside of the second grinding element, and a first grinding part is arranged on the circumferential surface of the first grinding element facing the second grinding element, and a second grinding part is arranged on the circumferential surface of the second grinding element facing the first grinding element, and the grinding gap is formed between the first grinding part and the second grinding part.

3. The adjustable grinding machine according to claim 2, characterized in that: The second grinding part is located to the side and below the first grinding part; as the first grinding element moves downward along its axial direction, the first grinding part moves downward closer to the second grinding part, and the grinding gap decreases; as the first grinding element moves upward along its axial direction, the first grinding part moves downward away from the second grinding part, and the grinding gap increases.

4. The adjustable grinding mill according to any one of claims 1 to 3, characterized in that: The outer rotating component is rotatably mounted on the base and coaxially sleeved with the inner rotating component, and the inner rotating component is coaxially sleeved with the first grinding component; a first connecting component is provided between the outer rotating component and the inner rotating component to fix the outer rotating component and the inner rotating component.

5. The adjustable grinding machine according to claim 4, characterized in that: The first connecting member includes a limiting protrusion and limiting teeth. The limiting protrusion is arranged on the circumferential surface of the outer rotating member facing the inner rotating member, and the limiting teeth are arranged on the circumferential surface of the inner rotating member facing the outer rotating member. A limiting groove with a width adapted to the width of the limiting teeth is formed between two adjacent limiting teeth, and the limiting protrusion is placed in the limiting groove. When the outer rotating member rotates, the inner rotating member is driven to rotate through the limiting protrusion and the limiting teeth.

6. The adjustable grinding machine according to claim 5, characterized in that: At least two limiting protrusions are evenly distributed on the circumferential surface of the outer rotating component facing the inner rotating component; the limiting teeth are evenly distributed on the circumferential surface of the inner rotating component facing the outer rotating component.

7. The adjustable grinding machine according to claim 4, characterized in that: A first limiting block is also provided on the circumferential surface of the outer rotating component facing the inner rotating component. The first limiting block is positioned above the inner rotating component and abuts against the top surface of the inner rotating component.

8. The adjustable grinding machine according to any one of claims 1 to 3, characterized in that: The base is provided with a support member and a limiting claw. The outer rotating member has an inner ring and an outer ring connected as one piece, and an annular cavity is formed between the inner ring and the outer ring. The inner rotating component is placed inside the annular cavity; The support member is ring-shaped and is positioned below the inner ring to support it. The inner circumferential surface of the inner ring faces the moving member and is used to guide the moving member. The support member is positioned between the inner rotating member and the moving member and guides the movement of the moving member. A limiting ring is provided on the outer circumferential surface of the outer ring, and the limiting claw is placed on the limiting ring and presses the outer rotating part against the base.

9. The adjustable grinding machine according to claim 8, characterized in that: The inner rotating component and the moving component are coaxially sleeved together, and a second connecting component is provided between the inner rotating component and the moving component. The second connecting component converts the rotational motion of the inner rotating component into the up-and-down movement of the moving component.

10. The adjustable grinding machine according to claim 9, characterized in that: The second connecting member includes a thread disposed on the circumferential surface of the inner rotating member facing the moving member, a guide groove disposed on the support member, and a second limiting block disposed on the circumferential surface of the moving member facing the inner rotating member. The second limiting block passes through the guide groove and engages with the thread. The rotation of the thread drives the moving member to move along the axial direction of the inner rotating member.

11. The adjustable grinding mill according to any one of claims 1 to 3, characterized in that: The moving part includes a first moving part and a second moving part sleeved inside the first moving part. The first moving part is connected to the inner rotating part and is directly driven by the inner rotating part. The second moving part is connected to the first grinding part. A third connecting member is provided between the first moving member and the second moving member to achieve a fixed connection between the first moving member and the second moving member.

12. The adjustable grinding machine according to claim 11, characterized in that: The third connecting member includes a third limiting block and a limiting groove. The third limiting block is placed in the limiting groove, and the limiting groove limits the third limiting block in the circumferential and axial directions of the first moving member. The third limiting block is disposed on the circumferential surface of the first moving member facing the second moving member, and the limiting groove is disposed on the circumferential surface of the second moving member facing the first moving member; Alternatively, the limiting groove is disposed on the circumferential surface of the first moving member facing the second moving member, and the third limiting block is disposed on the circumferential surface of the second moving member facing the first moving member.

13. The adjustable grinding machine according to claim 11, characterized in that: On the first moving part, a guide ring is provided at the bottom position of the second moving part. The inner circumferential surface of the guide ring contacts the outer circumferential surface of the first grinding part and guides the movement of the first grinding part.

14. The adjustable grinding machine according to claim 11, characterized in that: The second moving part is sleeved outside the first grinding part, and a pressure ring, a first limiting part and a limiting protrusion are provided on the circumferential surface of the second moving part facing the first grinding part. The pressure ring and the limiting protrusion are arranged opposite to each other to restrict the up and down movement of the first grinding part, and the first limiting part restricts the circumferential movement of the first grinding part.

15. The adjustable grinding machine according to claim 14, characterized in that: A connecting ring is provided on the outer peripheral surface of the first grinding part. The connecting ring is placed between the pressure ring and the limiting protrusion. A second limiting part is provided on the connecting ring, which is adapted to the first limiting part. The first limiting part and the second limiting part cooperate.

16. The adjustable grinding machine according to any one of claims 1 to 3, characterized in that: It also includes a powder outlet channel disposed on the base, one end of which is disposed on the bottom surface of the accommodating cavity and located below the first grinding element and the second grinding element, and the other end of which is inclined downward and extends out of the base.

17. A coffee machine, characterized in that, Includes the adjustable grinding machine as described in claims 1 to 16.

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