Grinding mechanism of coffee machine

Abstract

A grinding mechanism of a coffee machine relates to the technical field of coffee machines and comprises a power base, a motor, a transmission gear set, a movable grinding wheel cavity, a movable grinding wheel, an adjusting disc fixing frame, an adjusting disc, a static grinding wheel fixing frame and a static grinding wheel, the movable grinding wheel cavity is a cylindrical cavity, the movable grinding wheel is conical, and shifting blocks are arranged on the periphery of the bottom of the movable grinding wheel. Oblique grinding teeth are distributed on the periphery of the side face of the movable grinding wheel, the movable grinding wheel cavity is provided with a guide outlet, the static grinding wheel fixing frame moves up and down along a guide hole through a guide column, the adjusting disc is in threaded connection with the static grinding wheel fixing frame, bevel teeth driven by a hand wheel are rotationally arranged on the power base, and oblique teeth meshed with the bevel teeth are arranged on the side wall of the adjusting disc. Compared with the prior art, the utility model has the advantages that the grinding mechanism is convenient to clean, and the use experience of a user is good.

Description

Technical Field

[0001] The utility model relates to the technical field of coffee machines, in particular to a grinding mechanism of a coffee machine. Background Art

[0002] Existing instant coffee machines all have coffee grinding mechanisms. The requirements for coffee grinding mechanisms are that the grinding particle size can be adjusted and that they are easy to disassemble and assemble for easy cleaning. However, the existing technology is determined by the grinding structure, which has dead corners, making cleaning difficult and the user experience poor. Summary of the Invention

[0003] The purpose of the invention is to provide a grinding mechanism for a coffee machine which is easy to clean and provides good user experience.

[0004] The utility model is implemented as follows: it includes a power base, a motor fixed on the power base, a transmission gear set driven by the motor and arranged in a gear cavity of the power base, a dynamic grinding wheel cavity fixed on the motor power base, a dynamic grinding wheel driven by the transmission gear set arranged in the dynamic grinding wheel cavity, an adjusting disk fixing frame fixed on the dynamic grinding wheel cavity, an adjusting disk positioned on the adjusting disk fixing frame and capable of rotating relative to the adjusting disk fixing frame, a static grinding wheel fixing frame arranged in the adjusting disk, and a static grinding wheel fixed in the static grinding wheel fixing frame, the dynamic grinding wheel cavity is a cylindrical cavity, the dynamic grinding wheel is conical, a shift block is arranged around the bottom of the dynamic grinding wheel, and oblique gears are distributed around the side of the dynamic grinding wheel. The grinding teeth of the dynamic grinding wheel cavity are provided with a guide outlet, the guide direction of the guide outlet is tangent to the dynamic grinding wheel cavity, a guide hole is provided on the adjusting disk fixing frame, a guide column is provided at the bottom of the static grinding wheel fixing frame, the static grinding wheel fixing frame moves up and down along the guide hole through the guide column, the inner cavity of the adjusting disk is provided with an internal thread, the outer wall of the static grinding wheel fixing frame is provided with an external thread, the adjusting disk is threadedly connected to the static grinding wheel fixing frame, the power base is rotatably provided with an umbrella tooth driven by a hand wheel, the side wall of the adjusting disk is provided with helical teeth meshing with the umbrella teeth, the static grinding wheel is a frustum-shaped cavity matching the dynamic grinding wheel, and the lower side wall of the frustum-shaped cavity is provided with inner oblique grinding teeth matching the oblique grinding teeth of the dynamic grinding wheel.

[0005] During operation, coffee beans are put into the moving grinding wheel from the top of the static grinding wheel's frustum-shaped cavity. The static grinding wheel starts power to grind the coffee beans. The ground coffee powder falls into the moving grinding wheel cavity and is moved to the outlet by the paddle block and discharged from the outlet.

[0006] When you need to adjust the coffee bean particle size, turn the hand wheel to rotate the adjustment disk, which drives the static grinding wheel fixing frame and the static grinding wheel inside the static grinding wheel fixing frame to move up and down. By adjusting the gap between the dynamic grinding wheel and the static grinding wheel, the particle size of the coffee powder can be adjusted.

[0007] When cleaning is needed, the hand wheel is turned to separate the static grinding wheel holder and the static grinding wheel in the static grinding wheel holder from the adjusting disk. The separated static grinding wheel holder and the static grinding wheel in the static grinding wheel holder are easy to clean. The dynamic grinding wheel is also easy to clean because it is completely open.

[0008] Compared with the prior art, the utility model has the advantages that the grinding mechanism is easy to clean and the user has good experience in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic structural diagram of the grinding mechanism of the coffee machine of the present invention;

[0010] Figure 2 It is a structural schematic diagram of the power base part viewed from the bottom;

[0011] Figure 3 It is a structural diagram of the movable grinding wheel cavity;

[0012] Figure 4 It is a structural diagram of the adjustment disk part;

[0013] Figure 5 It is a cross-sectional view of the adjustment disk part.

[0014] Explanation of the accompanying numbers: 1-power base; 2-motor; 3-gear cavity; 4-transmission gear set; 5-dynamic grinding wheel cavity; 6-dynamic grinding wheel; 7-adjusting disk fixing frame; 8-adjusting disk; 9-static grinding wheel fixing frame; 10-static grinding wheel; 11-shift block; 12-oblique grinding teeth; 13-guide outlet; 14-guide hole; 15-guide column; 16-external thread; 17-bearing; 18-bearing seat; 19-handwheel; 20-bevel gear; 21-shaft; 22-oblique teeth; 23-conical cavity; 24-inner oblique grinding teeth; 25-circular ring platform; 26-radial flange; 27-inlaid ridge; 28-inlaid groove; 29-internal thread; 30-cover. DETAILED DESCRIPTION

[0015] The grinding mechanism of the coffee machine of the present invention is now described in further detail with reference to the accompanying drawings and embodiments:

[0016] like Figure 1As shown, the grinding mechanism of the coffee machine of the present invention includes a power base 1, a motor 2 fixed on the power base 1, a transmission gear set 4 driven by the motor 2 and arranged in a gear cavity 3 of the power base 1, a dynamic grinding wheel cavity 5 fixed on the power base 1, a dynamic grinding wheel 6 driven by the transmission gear set 4 and arranged in the dynamic grinding wheel cavity 5, an adjusting disk fixing frame 7 fixed on the dynamic grinding wheel cavity 5, an adjusting disk 8 positioned on the adjusting disk fixing frame 7 and rotatable relative to the adjusting disk fixing frame 7, a static grinding wheel fixing frame 9 whose inner cavity is a cylindrical cavity arranged in the adjusting disk 8, and a static grinding wheel 10 fixed in the static grinding wheel fixing frame 9, the dynamic grinding wheel cavity 5 is a cylindrical cavity, the dynamic grinding wheel 6 is conical, a shifting block 11 is arranged around the bottom of the dynamic grinding wheel 6, oblique grinding teeth 12 are distributed around the side of the dynamic grinding wheel 6, the dynamic grinding wheel cavity 5 is provided with a guide outlet 13, and the guide outlet 13 is provided with a guide outlet 13. The export direction is tangent to the dynamic grinding wheel cavity 5, a guide hole 14 is provided on the adjusting disk holder 7, and a guide column 15 is provided at the bottom of the static grinding wheel holder 9. The static grinding wheel holder 9 moves up and down along the guide hole 14 through the guide column 15. The inner cavity of the adjusting disk 8 is provided with an internal thread 29, and the outer side wall of the static grinding wheel holder 9 is provided with an external thread 16 (the external thread is disconnected for several sections to ensure that it is captured by the internal thread). The adjusting disk 8 is threadedly connected to the static grinding wheel holder 9, and a bearing seat 18 with a bearing 17 is provided on the power base 1. A shaft 21 with a handwheel 19 and a bevel gear 20 are respectively fixed at both ends and penetrates the bearing 17. The side wall of the adjusting disk 8 is provided with helical teeth 22 that mesh with the bevel gear 20. The static grinding wheel 10 is a frustum-shaped cavity 23 that matches the dynamic grinding wheel 6, and the lower side wall of the frustum-shaped cavity 23 is provided with inner oblique grinding teeth 24 that match the oblique grinding teeth 12 of the dynamic grinding wheel 6.

[0017] Preferably, a circular ring platform 25 is provided in the static grinding wheel fixing frame 9, and a radial flange 26 is provided on the surface of the circular ring platform 25. A convex strip 27 is embedded on the inner cavity side wall of the static grinding wheel fixing frame 9 above the circular ring platform 25, and a groove 28 is embedded on the outer side wall of the static grinding wheel 10 matching the embedded convex strip 27.

[0018] The radial flange 26 is used to tightly fit the inlay rib 27 into the inlay groove 28, ensuring that the position of the static grinding wheel 10 is accurate and stable. At the same time, the contact area between the static grinding wheel 10 and the radial flange 26 is small during inlaying, the friction is small, and the inlaying is smooth.

[0019] During operation, the cover 30 on the truncated cone-shaped cavity 23 of the static grinding wheel 10 is opened, and coffee beans are placed from the top of the truncated cone-shaped cavity 23 of the static grinding wheel 10 between the dynamic grinding wheel 6 and the static grinding wheel 10. The power is turned on to grind the coffee beans. The ground coffee powder falls into the dynamic grinding wheel cavity 5 and is moved by the shifting block 11 to the outlet 13. The outlet 13 is then led to the coffee brewing mechanism on the coffee machine below.

[0020] When the coffee bean particle size needs to be adjusted, the hand wheel 19 is turned to rotate the adjusting disk 8, which drives the static grinding wheel fixing frame 9 and the static grinding wheel 10 in the static grinding wheel fixing frame 9 to move up and down. By adjusting the gap between the dynamic grinding wheel 6 and the static grinding wheel 10, the particle size of the coffee powder is adjusted.

[0021] When cleaning is required, the hand wheel 19 is turned to separate the static grinding wheel holder 9 and the static grinding wheel 10 in the static grinding wheel holder 9 from the adjusting disk 8. The separated static grinding wheel holder 9 and the static grinding wheel 10 in the static grinding wheel holder 9 are easy to clean. Since the dynamic grinding wheel 6 is completely open, it is also easy to clean.

Claims

1. A grinding mechanism for a coffee machine, characterized in that: The invention comprises a power base, a motor fixed on the power base, a transmission gear set driven by the motor and arranged in the gear cavity of the power base, a dynamic grinding wheel cavity fixed on the motor power base, a dynamic grinding wheel driven by the transmission gear set arranged in the dynamic grinding wheel cavity, an adjusting disc fixing frame fixed on the dynamic grinding wheel cavity, an adjusting disc positioned on the adjusting disc fixing frame and capable of rotating relative to the adjusting disc fixing frame, a static grinding wheel fixing frame arranged in the adjusting disc, and a static grinding wheel fixed in the static grinding wheel fixing frame. The dynamic grinding wheel cavity is a cylindrical cavity, the dynamic grinding wheel is conical, a shifting block is arranged around the bottom of the dynamic grinding wheel, and oblique grinding teeth are distributed around the side of the dynamic grinding wheel. The grinding wheel cavity is provided with a guide outlet, the guide direction of the guide outlet is tangent to the dynamic grinding wheel cavity, a guide hole is provided on the adjusting disk fixing frame, a guide column is provided at the bottom of the static grinding wheel fixing frame, the static grinding wheel fixing frame moves up and down along the guide hole through the guide column, the inner cavity of the adjusting disk is provided with an internal thread, the outer wall of the static grinding wheel fixing frame is provided with an external thread, the adjusting disk is threadedly connected to the static grinding wheel fixing frame, an umbrella tooth driven by a hand wheel is rotatably provided on the power base, and the side wall of the adjusting disk is provided with helical teeth meshing with the umbrella teeth. The static grinding wheel is a frustum-shaped cavity matching the dynamic grinding wheel, and the lower side wall of the frustum-shaped cavity is provided with inner oblique grinding teeth matching the oblique grinding teeth of the dynamic grinding wheel.

2. The grinding mechanism of the coffee machine according to claim 1, characterized in that: A circular platform is provided in the static grinding wheel fixing frame, and a radial flange is provided on the surface of the circular platform. A convex strip is inlaid on the inner cavity side wall of the static grinding wheel fixing frame above the circular platform, and a groove is inlaid on the outer side wall of the static grinding wheel matching the inlaid convex strip.

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