A bean grinder and coffee maker

Abstract

The utility model discloses a kind of bean grinder and coffee machine, to can utilize protective net to prevent hand from entering, when protective net is not installed well, bean grinder unit cannot start, realize safety lock, bean grinder includes feeding hopper, bean grinder unit, protective net and detection unit;The bottom of the feeding hopper is equipped with bean outlet;The bean grinder unit is connected with the bean outlet, for grinding coffee beans;The protective net is arranged in the feeding hopper, and is located above the bean outlet;The detection unit is arranged on the feeding hopper, for detecting whether the protective net is arranged above the bean outlet;The bean grinder unit is according to the signal action of the detection unit, belong to coffee machine technical field.

Description

Technical Field

[0001] This utility model belongs to the field of coffee machine technology, and more specifically, relates to a coffee grinding device and a coffee machine. Background Technology

[0002] Fully automatic coffee machines rely on a grinding device to grind coffee beans automatically, requiring only manual addition of coffee beans.

[0003] When adding coffee beans, put them into the grinding chamber. The grinder blades rotate and squeeze the coffee beans against the walls of the grinding chamber, thus grinding the coffee beans into coffee powder.

[0004] In practice, if there is a blockage, it may be necessary to clean the grinding chamber. During cleaning, it is necessary to ensure that the grinding device is not running to prevent personal injury or machine damage. However, existing grinding devices lack this safety lock and require manual power-off. It is easy to forget to turn off the power, which may result in irreparable losses. Utility Model Content

[0005] The main purpose of this utility model is to provide a bean grinding device that can use a protective net to prevent human hands from entering. When the protective net is not properly installed, the bean grinding unit cannot be started, thus achieving a safety lock.

[0006] According to a first aspect of the present invention, a bean grinding device is provided, comprising a feeding hopper, a bean grinding unit, a protective net, and a detection unit;

[0007] The bottom of the feeding hopper is provided with a bean outlet;

[0008] The grinding unit is connected to the bean outlet and is used to grind coffee beans;

[0009] The protective net is installed in the feeding hopper and located above the bean outlet;

[0010] The detection unit is installed on the feeding hopper and is used to detect whether the protective net is installed above the bean outlet;

[0011] The grinding unit operates according to the signal from the detection unit.

[0012] In the above-mentioned bean grinding device, the protective net includes a net body and a detection column. The detection column is fixed on the net body, the net body is located above the bean outlet, and the feeding hopper is provided with a detection sleeve that cooperates with the detection column.

[0013] The detection unit is used to detect whether the detection column is inserted into the detection sleeve.

[0014] In the aforementioned coffee grinding device, the detection unit is a limit switch;

[0015] When the detection post is inserted into the detection sleeve, the detection post triggers the limit switch.

[0016] In the above-mentioned bean grinding device, the mesh body is provided with multiple positioning sleeves, and the feeding hopper is provided with positioning posts that are adapted to the positioning sleeves. The positioning posts cooperate with the positioning sleeves to allow the mesh body to be mounted above the bean outlet.

[0017] In the above-mentioned coffee grinding device, the coffee grinding unit includes a base, a collection cylinder and a drive assembly. The base has a cavity, in which a coffee grinding blade and a blade disc are provided. The blade disc is arranged around the coffee grinding blade and is coaxial with the coffee grinding blade. The drive assembly is connected to the coffee grinding blade to drive the coffee grinding blade to rotate.

[0018] The grinding chamber is formed between the blade and the grinding blade, and the grinding chamber is connected to the bean outlet. The collecting cylinder is connected to the concave cavity to collect coffee powder.

[0019] In the above-mentioned grinding device, the base is provided with a mounting seat and an adjusting plate, the feeding hopper is provided with an adjusting component, the cutter disc is detachably mounted in the mounting seat, the adjusting plate is sleeved on the outer wall of the mounting seat, the outer wall of the mounting seat is threadedly connected to the inner wall of the adjusting plate, the adjusting component is connected to the adjusting plate to drive the adjusting plate to rotate, and the rotation of the adjusting plate causes the mounting seat to move along the axial direction of the cutter disc.

[0020] In the above-mentioned grinding device, the adjusting component includes a rotating shaft that passes through the feeding hopper, a gear fixed on the rotating shaft, and a toothed portion on the outer wall of the adjusting disc. The gear meshes with the toothed portion, and rotating the rotating shaft drives the adjusting disc to rotate.

[0021] In the aforementioned grinding device, a handle is detachably mounted on the top of the rotating shaft, and the handle is located above the mesh body.

[0022] In the above-mentioned coffee grinding device, the inner wall of the mounting base is provided with a limiting part, the limiting part protrudes inward and extends to the bottom, the base is provided with a notch adapted to the limiting part, the notch opens upward and extends to the top of the base, and the limiting part is located in the notch.

[0023] According to a second aspect of the present invention, a coffee machine is provided, including a coffee grinding device as described in the first aspect.

[0024] One of the above-described technical solutions of this utility model has at least one of the following advantages or beneficial effects:

[0025] In this invention, a protective net is installed inside the feeding hopper to prevent human hands from entering the grinding unit through the bean outlet. A detection unit is also included to check if the protective net is installed. When the protective net is installed and positioned above the bean outlet, the detection unit detects its presence, and the grinding unit can then start grinding beans. If the protective net is not installed, the detection unit detects its absence and determines that human hands may enter the grinding unit; in this case, the grinding unit cannot start. This method achieves a safety interlock, protecting the grinding unit and the safety of maintenance personnel. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0027] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present utility model;

[0028] Figure 2 This is an exploded view of the structure of the first embodiment of this utility model;

[0029] Figure 3 This is another structural schematic diagram of the first embodiment of the present utility model;

[0030] Figure 4 This is a schematic diagram of the grinding unit of the first embodiment of the present invention;

[0031] Figure 5 This is an exploded view of the grinding unit of the first embodiment of this utility model;

[0032] Figure 6 This is a schematic diagram of the fit between the base and the mounting base according to the first embodiment of this utility model;

[0033] Figure 7 This is a structural cross-sectional view of the grinding unit of the first embodiment of this utility model.

[0034] The figure labels for each figure are as follows:

[0035] 1. Feeding hopper; 11. Bean outlet; 12. Detection sleeve; 13. Positioning column; 2. Grinding unit; 21. Base; 211. Cavity; 212. Annular flange; 213. Notch; 22. Collection cylinder; 23. Drive assembly; 24. Grinding blade; 25. Blade disc; 26. Mounting base; 261. Limiting part; 27. Adjusting disc; 271. Toothed part; 28. Adjusting assembly; 281. Rotating shaft; 282. Gear; 283. Handle; 29. ​​Elastic top column; 3. Protective net; 31. Net body; 32. Detection column; 33. Positioning sleeve; 4. Detection unit. Detailed Implementation

[0036] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0037] Reference Figures 1 to 7 As shown, a bean grinding device includes a feeding hopper 1, a grinding unit 2, a protective net 3, and a detection unit 4;

[0038] Coffee beans are added through the feeding hopper 1. The bottom of the feeding hopper 1 is provided with a bean outlet 11. The coffee beans fed into the feeding hopper 1 are output from the bean outlet 11.

[0039] The grinding unit 2 is connected to the bean outlet 11, which can receive coffee beans from the feed hopper 1. The grinding unit 2 is used to grind coffee beans.

[0040] The protective net 3 is installed in the feeding hopper 1 and located above the bean outlet 11. The protective net 3 can prevent people's hands from entering the grinding unit 2 through the bean outlet 11.

[0041] The detection unit 4 is installed on the feeding hopper 1 and is used to detect whether the protective net 3 is installed above the bean outlet 11;

[0042] The grinding unit 2 operates according to the signal from the detection unit 4;

[0043] In practice, when the protective net 3 is installed and located above the bean outlet 11, the detection unit 4 detects the presence of the protective net 3, and the bean grinding unit 2 can be started to grind beans. The protective net 3 can prevent human hands from entering.

[0044] When the protective net 3 is not installed, the detection unit 4 detects that the protective net 3 is not present and determines that a person may intrude into the grinding unit 2. At this time, the grinding unit 2 cannot be started.

[0045] This method achieves a safety interlock, protecting the safety of grinding unit 2 and maintenance personnel.

[0046] Reference Figures 2 to 3 The protective net 3 includes a net body 31 and a detection post 32. The detection post 32 is fixed on the net body 31. The net body 31 is located above the bean outlet 11. The net body 31 can ensure that coffee beans can pass through while blocking human hands from entering. At the same time, it can disperse coffee beans and prevent them from clogging the bean outlet 11.

[0047] The mesh body 31 is provided with multiple positioning sleeves 33, and the feeding hopper 1 is provided with positioning posts 13 that are adapted to the positioning sleeves 33. The positioning posts 13 cooperate with the positioning sleeves 33 to allow the mesh body 31 to be erected above the bean outlet 11. The feeding hopper 1 is provided with a detection sleeve 12 that cooperates with the detection post 32. When the mesh body 31 is erected above the bean outlet 11, the detection post 32 will be inserted into the detection sleeve 12.

[0048] The detection unit 4 is responsible for detecting whether the detection column 32 is inserted into the detection sleeve 12, thereby determining whether the protective net 3 is installed.

[0049] In this embodiment, the detection unit 4 is a limit switch, which is fixed on the back of the feeding hopper 1;

[0050] When the detection column 32 is inserted into the detection sleeve 12, the detection column 32 will trigger the limit switch, thereby determining that the protective net 3 is installed in place;

[0051] When the detection column 32 is not inserted into the detection sleeve 12, the limit switch cannot be triggered. At this time, it is determined that the protective net 3 is not installed, and the grinding unit 2 cannot be started.

[0052] In some other embodiments, the detection unit 4 can be a photoelectric sensor, which can also determine whether the detection post 32 is inserted into the detection sleeve 12.

[0053] In some other embodiments, the detection column 32 may not be provided. The detection unit 4 is a photoelectric sensor that directly detects the position of the net body 31 and determines whether the protective net 3 is installed.

[0054] Reference Figures 4 to 7 The grinding unit includes a base 21, a collection cylinder 22 and a drive assembly 23. The base 21 has a cavity 211, in which a grinding blade 24 and a blade disc 25 are provided. The blade disc 25 is arranged around the grinding blade 24 and is coaxial with the grinding blade 24. The drive assembly 23 is connected to the grinding blade 24 to drive the grinding blade 24 to rotate.

[0055] The grinding chamber is formed between the burr 25 and the grinding blade 24. The grinding chamber is connected to the bean outlet 11. After the coffee beans enter the grinding chamber, they are squeezed against the wall of the grinding chamber by the rotation of the grinding blade 24, thus being ground into coffee powder. The coffee powder falls to the bottom of the concave cavity 211. The collecting cylinder 22 is connected to the concave cavity 211 and is used to collect the coffee powder.

[0056] In this embodiment, the drive assembly 23 includes a motor, a worm gear, a turbine, and a main shaft. The main shaft is rotatably mounted on the base 21 and passes through the cavity 211. The grinding blade 24 is fixed on the main shaft. The worm gear is connected to the output shaft of the motor. The turbine is fixed on the main shaft. When the motor runs, it drives the worm gear to rotate, which in turn drives the turbine to rotate. The turbine then drives the main shaft to rotate, and the grinding blade 24 can rotate as well.

[0057] The collection cylinder 22 is connected to the bottom of the cavity 211 through an inclined pipe. A cleaning disc is fitted on the main shaft. The cleaning disc includes multiple scraping blades arranged around the main shaft. The cleaning disc rotates with the main shaft. When the cleaning disc rotates, the scraping blades will gradually scrape the coffee powder on the bottom of the cavity 211 and the cavity wall of the cavity 211 into the inclined pipe.

[0058] In this embodiment, the base 21 is provided with a mounting base 26 and an adjusting plate 27, the feeding hopper 1 is provided with an adjusting component 28, the cutter head 25 is detachably disposed in the mounting base 26, the adjusting plate 27 is sleeved on the outer wall of the mounting base 26, the outer wall of the mounting base 26 is threadedly connected to the inner wall of the adjusting plate 27, the adjusting component 28 is connected to the adjusting plate 27 to drive the adjusting plate 27 to rotate, and the rotation of the adjusting plate 27 drives the mounting base 26 to move along the axial direction of the cutter head 25;

[0059] Specifically, the outer wall of the base 21 is provided with an annular flange 212, and the bottom of the adjustment disc 27 is provided with a buckle, which is connected to the annular flange 212, so that the adjustment disc 27 can rotate but cannot move up and down; the inner wall of the mounting base 26 is provided with a limiting part 261, which protrudes inward and extends to the bottom. The base 21 is provided with a notch 213 that matches the limiting part 261. The notch 213 opens upward and extends to the top of the base 21. The limiting part 261 is located in the notch 213. Therefore, under the restriction of the notch 213, the mounting base 26 cannot rotate, but can only move up and down along the notch 213; the mounting base 26 is threadedly connected to the adjustment disc 27. When the adjustment disc 27 rotates, the mounting base 26 will adjust its position up and down under the action of the thread, thereby adjusting the height of the burr 25. The height of the burr 25 affects the clearance between it and the grinding blade 24, thus affecting the coarseness of the ground coffee powder.

[0060] In this embodiment, the cutter head 25 is installed in the mounting base 26 by means of a snap-fit.

[0061] In this embodiment, an elastic top post 29 can be provided on the outside of the base 21 to press the adjusting plate 27 in the vertical direction, so that the buckle of the adjusting plate 27 can press on the annular flange 212 to prevent the adjusting plate 27 from floating up and down.

[0062] Specifically, the base 21 is provided with an auxiliary sleeve, and the elastic top post 29 is located in the auxiliary sleeve. The elastic top post 29 is connected to the bottom of the auxiliary sleeve by a spring. Under the action of the spring, the elastic top post 29 can extend and retract up and down.

[0063] In this embodiment, the adjusting component 28 includes a rotating shaft 281 that passes through the feeding hopper 1, a gear 282 fixed on the rotating shaft 281, and a toothed portion 271 on the outer wall of the adjusting disk 27. The toothed portion 271 includes multiple teeth and is integrally formed with the adjusting disk 27. The gear 282 meshes with the toothed portion 271. Rotating the rotating shaft 281 drives the gear 282 to rotate. Since the gear 282 meshes with the toothed portion 271, the adjusting disk 27 can rotate.

[0064] In this embodiment, a handle 283 is detachably installed on the top of the rotating shaft 281. The handle 283 is located above the mesh body 31. Without removing the protective mesh 3, the handle 283 can be operated to rotate the rotating shaft 281 to adjust the coarseness of the ground coffee powder.

[0065] In practical applications, the coffee grinder is used in coffee machines to supply coffee powder to the brewing device.

[0066] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A coffee grinding device, characterized in that, It includes a feeding hopper (1), a grinding unit (2), a protective net (3), and a detection unit (4); The bottom of the feeding hopper (1) is provided with a bean outlet (11); The grinding unit (2) is connected to the bean outlet (11) and is used to grind coffee beans; The protective net (3) is installed in the feeding hopper (1) and located above the bean outlet (11); The detection unit (4) is installed on the feeding hopper (1) and is used to detect whether the protective net (3) is installed above the bean outlet (11); The grinding unit (2) operates according to the signal from the detection unit (4).

2. The grinding device according to claim 1, characterized in that, The protective net (3) includes a net body (31) and a detection column (32). The detection column (32) is fixed on the net body (31). The net body (31) is located above the bean outlet (11). The feeding hopper (1) is provided with a detection sleeve (12) that cooperates with the detection column (32). The detection unit (4) is used to detect whether the detection column (32) is inserted into the detection sleeve (12).

3. The grinding device according to claim 2, characterized in that, The detection unit (4) is a limit switch; When the detection post (32) is inserted into the detection sleeve (12), the detection post (32) triggers the limit switch.

4. The grinding device according to claim 2, characterized in that, The mesh body (31) is provided with a plurality of positioning sleeves (33), and the feeding hopper (1) is provided with a positioning post (13) adapted to the positioning sleeve (33). The positioning post (13) cooperates with the positioning sleeve (33) to allow the mesh body (31) to be erected above the bean outlet (11).

5. The grinding device according to claim 2, characterized in that, The grinding unit includes a base (21), a collection cylinder (22), and a drive assembly (23). The base (21) has a cavity (211), in which a grinding blade (24) and a blade disc (25) are provided. The blade disc (25) is arranged around the grinding blade (24) and coaxial with the grinding blade (24). The drive assembly (23) is connected to the grinding blade (24) to drive the grinding blade (24) to rotate. The grinding chamber is formed between the blade (25) and the grinding blade (24), and the grinding chamber is connected to the bean outlet (11). The collecting cylinder (22) is connected to the concave cavity (211) to receive coffee powder.

6. The grinding device according to claim 5, characterized in that, The base (21) is provided with a mounting seat (26) and an adjusting plate (27). The feeding hopper (1) is provided with an adjusting component (28). The cutter head (25) is detachably mounted in the mounting seat (26). The adjusting plate (27) is sleeved on the outer wall of the mounting seat (26). The outer wall of the mounting seat (26) is threadedly connected to the inner wall of the adjusting plate (27). The adjusting component (28) is connected to the adjusting plate (27) to drive the adjusting plate (27) to rotate. The rotation of the adjusting plate (27) drives the mounting seat (26) to move along the axial direction of the cutter head (25).

7. The grinding device according to claim 6, characterized in that, The adjustment assembly (28) includes a rotating shaft (281) that passes through the feeding hopper (1), a gear (282) fixed on the rotating shaft (281), and a toothed portion (271) on the outer wall of the adjustment disk (27). The gear (282) meshes with the toothed portion (271), and rotating the rotating shaft (281) drives the adjustment disk (27) to rotate.

8. The grinding apparatus according to claim 7, characterized in that, A handle (283) is detachably mounted on the top of the shaft (281), and the handle (283) is located above the mesh body (31).

9. The grinding device according to claim 6, characterized in that, The inner wall of the mounting base (26) is provided with a limiting part (261), the limiting part (261) protrudes inward and extends to the bottom, the base (21) is provided with a notch (213) adapted to the limiting part (261), the notch (213) opens upward and extends to the top of the base (21), and the limiting part (261) is located in the notch (213).

10. A coffee machine, characterized in that, Includes the bean grinding device as described in any one of claims 1-9.

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