Bean grinding device of self-service coffee machine

Abstract

The utility model relates to the technical field of coffee machines, in particular to a bean grinding device of a self-service coffee machine, which comprises a grinding box and a grinding head, the grinding box is provided with a fine grinding cavity and a coarse grinding cavity, a fine grinding cutter group and a coarse grinding cutter group are mounted on the grinding head, and a driving component is arranged on the grinding head; the grinding head is driven by the driving assembly to rotate to conduct first-time grinding on coffee beans entering the coarse grinding cavity, the coffee beans are smashed into small particles, and then the ground small particles move along the inner wall of the grinding box under the action of gravity to enter the fine grinding cavity to be subjected to second-time grinding; firstly, coffee beans are ground twice in the inclined decreasing space of the grinding box so as to achieve the purpose of fine grinding, secondly, the depth, extending into the grinding box, of the grinding head is adjusted through the driving assembly, and when the grinding head moves upwards or downwards, the gap between the fine grinding cutter set and the fine grinding cavity is changed accordingly, so that the grinding efficiency is improved. Therefore, the purpose of adjusting the final grinding degree of the coffee beans is achieved, and coffee of different tastes can be brewed.

Description

TECHNICAL FIELD

[0001] The utility model relates to coffee machine technical field, concretely relates to a self -service coffee machine bean grinder. BACKGROUND

[0002] Self -service coffee machine is a kind of equipment for automatically making and selling coffee, it allows user to select, purchase and obtain coffee beverage by simple operation step, its grinding (built-in bean grinder), brewing, charging (such as milk foam, syrup) and pouring function, whole process automation is completed, is widely used in office and school and other public areas.

[0003] But the bean grinder of existing coffee machine is mostly only single grinding to coffee beans, and single grinding coffee beans is prone to extrusion, so that it is easier to produce larger particles, and the grinding is not fine enough, which is not conducive to subsequent brewing;

[0004] Secondly, since grinding coffee beans into different sizes (thickness) can have important influence on the flavor and extraction rate of coffee, adjusting the grinding degree can be optimized according to individual taste preference and brewing equipment, so as to obtain ideal coffee experience, the grinding degree of the existing grinding device cannot be adjusted according to user demand, which has certain limitation. INVENTION CONTENTS

[0005] Therefore, the purpose of the utility model is to provide a self -service coffee machine bean grinder to solve the technical problems that the bean grinder of coffee machine in the prior art is mostly only single grinding to coffee beans, and the grinding is not fine enough, and the existing bean grinder mostly cannot adjust the grinding degree of coffee beans according to individual taste preference.

[0006] The utility model realizes the following technical scheme:

[0007] A self -service coffee machine bean grinder, including the grinding box of funnel shape and the grinding head of circular platform, the inside of grinding box is from below to above in turn and is refined grinding chamber and coarse grinding chamber;

[0008] The outer surface of the grinding head is sequentially surrounded by a set of fine grinding knife groups and a set of coarse grinding knife groups from bottom to top, and the gap between the fine grinding knife group and the fine grinding chamber is less than the gap between the coarse grinding knife group and the coarse grinding chamber;

[0009] Driving assembly is arranged on the grinding head, for driving the grinding head to rotate and grind coffee beans, and the depth of the grinding head inserted into the grinding box can be adjusted.

[0010] Further, the driving assembly comprises a connecting head fixedly connected to the top of the grinding head, a driving shaft is fixedly connected to the connecting head, one end of the driving shaft is connected with a first power source, and the first power source is installed on the lifting mechanism.

[0011] Further, the lifting mechanism comprises a lifting seat for installing the first power source, a threaded rod is threadedly connected in the lifting seat, and mounting seats are arranged at two ends of the threaded rod.

[0012] Further, an auxiliary sliding rod is further arranged in the lifting seat, and two ends of the auxiliary sliding rod are fixedly connected with the two mounting seats.

[0013] Further, a sealing plate is fixedly arranged at the top opening of the grinding box, the sealing plate is fixedly connected with the mounting seat at the bottom of the threaded rod, and a feeding pipe for adding coffee beans into the grinding box is arranged on the sealing plate.

[0014] Further, a discharging head is fixedly connected to the bottom of the grinding box, and a pushing block is fixedly connected to the outer surface of the discharging head.

[0015] Further, a supporting rod is fixedly connected to the outer surface of the grinding box, the center line of the supporting rod is perpendicular to the center line of the grinding box, and an installation plate is fixedly connected to the end of the supporting rod away from the grinding box.

[0016] The self-service coffee grinder of the self-service coffee grinder has the advantages that:

[0017] When the self-service coffee grinder is used, the driving assembly drives the grinding head to rotate, so that the coarse grinding knife group can drive the coffee beans entering the coarse grinding cavity to be ground for the first time, so that the coffee beans can be crushed into smaller particles, and then the smaller particles ground can move along the inner wall of the grinding box into the fine grinding cavity under the action of gravity, the fine grinding knife group is driven to rotate synchronously in the process of rotation of the grinding head, and the smaller particles entering the fine grinding cavity are ground for the second time, so that the coffee beans can be ground twice in the inclined and decreasing space in the grinding box, the uniform and rapid grinding and crushing of the coffee particles can be ensured, different grinding times can be set according to needs, the purpose of fine grinding can be achieved, the coffee beans ground can be discharged from the opening at the bottom of the grinding box along the bottom wall of the grinding box for brewing, and the grinder has the advantages of simple structure, small size and low production cost.

[0018] Secondly, the driving component adjusts the depth of the grinding head into the grinding chamber. Since the grinding chamber is funnel-shaped, the gap between the fine grinding blade assembly and the fine grinding chamber changes as the grinding head moves up or down, thereby adjusting the final grind of the coffee beans. Users can freely select the grind of each coffee type through the coffee machine's control panel, which is beneficial for brewing different flavors of coffee. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the self-service coffee machine grinding device of this utility model.

[0020] Figure 2 This is a schematic diagram showing the connection between the connector and the grinding head of the self-service coffee machine grinding device of this utility model.

[0021] Figure 3 This is a schematic diagram of the grinding box of the self-service coffee machine grinding device of this utility model.

[0022] Figure 4 This is a schematic diagram of the grinding head of the self-service coffee machine grinding device of this utility model.

[0023] In the diagram: 1-Grinding box, 2-Grinding head, 3-Fine grinding chamber, 4-Rough grinding chamber, 5-Fine grinding tool set, 6-Rough grinding tool set;

[0024] 7-Drive assembly, 71-Connector, 72-Drive shaft, 73-First power source, 74-Lifting mechanism, 741-Lifting seat, 742-Threaded rod, 743-Mounting seat, 744-Second power source, 745-Auxiliary slide bar;

[0025] 8-Sealing plate, 9-Feed pipe, 10-Discharge head, 11-Pulling block, 12-Support rod, 13-Mounting plate. Detailed Implementation

[0026] Typical embodiments embodying the features and advantages of this utility model will be specifically described in the following description. It should be understood that this utility model can have various variations in different embodiments, all of which do not depart from the scope of this utility model, and the descriptions and illustrations therein are for illustrative purposes only and not intended to limit this utility model.

[0027] In the description of this application, the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the structure 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 application.

[0028] Please see Figures 1 to 4The utility model provides a technical scheme: a self -service coffee grinder device, including the grinding box 1 of funnel shape and the grinding head 2 of circular platform shape, the grinding box 1 is installed in coffee machine, the grinding head 2 extends into the grinding box 1, and the centre line of grinding head 2 coincides with the centre line of grinding box 1,

[0029] The inside of grinding box 1 is in turn fine grinding chamber 3 and coarse grinding chamber 4 from below to above, since the whole grinding box 1 is funnel-shaped, so that coffee beans can move in the inside space of the inclined decrease after the first grinding in coarse grinding chamber 4 is completed along the inclined inner wall, and enters fine grinding chamber 3 and carries out secondary grinding,

[0030] The outer surface of grinding head 2 is in turn surrounded by a group of fine grinding knife group 5 and a group of coarse grinding knife group 6 from below to above, the number of grinding knives of fine grinding knife group 5 is more than coarse grinding knife group 6, and the gap between fine grinding knife group 5 and fine grinding chamber 3 is less than the gap between coarse grinding knife group 6 and coarse grinding chamber 4, which is conducive to the secondary fine grinding of coffee beans,

[0031] Driving assembly 7 is arranged on grinding head 2, for driving grinding head 2 to rotate and grind coffee beans, and the depth of grinding head 2 extending into grinding box 1 can be adjusted,

[0032] Secondly, the depth of fine grinding chamber 3 and coarse grinding chamber 4 is greater than the length of grinding knife, to ensure that the grinding knife is always in the corresponding chamber after the movement of grinding head 2,

[0033] The grinding head 2 is composed of two circular platform column bodies with different bus slope, the circular platform column body located below tends to be cylindrical, so that the gap between fine grinding knife group 5 and the inner wall of fine grinding chamber 3 can be avoided to change greatly when grinding head 2 moves in a small range, to ensure the fine grinding of coffee beans,

[0034] The self-service coffee machine bean grinding device in the utility model is used, the driving assembly 7 drives the grinding head 2 to rotate, thereby the coarse grinding knife group 6 can drive the coffee beans in the coarse grinding cavity 4 to be ground for the first time, the coffee beans are crushed into smaller particles, and the smaller particles ground subsequently move into the fine grinding cavity 3 along the inner wall of the grinding box 1 under the action of gravity, the grinding head 2 rotates to drive the fine grinding knife group 5 to rotate synchronously to grind the smaller particles in the fine grinding cavity 3 for the second time, so that the coffee beans in the grinding box 1 experience twice grinding in the space that inclines and decreases, the uniform and rapid grinding of the coffee particles can be guaranteed, different grinding times can be set according to the requirement, the purpose of fine grinding is achieved, and the coffee beans ground completely are guided out from the opening at the bottom of the grinding box 1 along the bottom wall of the grinding box 1 to brew, in addition, the bean grinding device has the advantages of simple structure, small size and lower production cost.

[0035] Secondly, the driving assembly 7 adjusts the depth of the grinding head 2 in the grinding box 1, since the grinding box 1 is funnel-shaped, when the grinding head 2 moves upwards or downwards, the gap between the fine grinding knife group 5 and the fine grinding cavity 3 changes, so that the purpose of adjusting the last grinding degree of the coffee beans is achieved, and the user can freely select the grinding degree of the coffee beans of each coffee through the coffee machine operation panel, which is favorable for brewing coffee with different tastes.

[0036] Please refer to Figure 1 、 Figure 2 and Figure 4 , the driving assembly 7 comprises a connecting head 71 fixedly connected to the top of the grinding head 2, a driving shaft 72 is fixedly connected to the connecting head 71, one end of the driving shaft 72 is connected with a first power source 73, the first power source 73 is a direct current motor, and the first power source 73 is installed on a lifting mechanism 74;

[0037] The lifting mechanism 74 comprises a lifting seat 741 for installing the first power source 73, a threaded rod 742 is threadedly connected in the threaded sleeve of the lifting seat 741, mounting seats 743 are arranged at the two ends of the threaded rod 742 respectively, the mounting seats 743 are bolted to the coffee machine, wherein the mounting seat 743 at the top of the threaded rod 742 is fixedly provided with a second power source 744 for driving the threaded rod 742 to rotate, and the second power source 744 is a servo motor; the first power source 73 drives the driving shaft 72 to rotate, and the driving shaft 72 drives the grinding head 2 to rotate through the connecting head 71 to grind the coffee beans;

[0038] The second power source 744 drives the threaded rod 742 to rotate, and the threaded rod 742 rotates clockwise or counterclockwise to drive the lifting seat 741 to move upward or downward, thereby adjusting the depth of the grinding head 2 into the grinding box 1. Since the grinding box 1 is funnel-shaped, when the grinding head 2 moves upward or downward, the gap between the fine grinding knife group 5 and the fine grinding cavity 3 also changes, thereby adjusting the final grinding degree of the coffee beans, which is beneficial to brew coffee with different tastes.

[0039] The lifting seat 741 is also provided with an auxiliary sliding rod 745, and the two ends of the auxiliary sliding rod 745 are fixedly connected with two mounting seats 743, respectively. When the threaded rod 742 drives the lifting seat 741 to move, the auxiliary sliding rod 745 can assist the lifting seat 741 to move.

[0040] Please refer to Figure 1 and Figure 2 , the top opening of the grinding box 1 is fixedly provided with a cover plate 8, the cover plate 8 is fixedly connected with the mounting seat 743 at the bottom of the threaded rod 742, and the cover plate 8 is used to close the top opening of the grinding box 1 to prevent coffee beans from running out of the grinding box 1 during grinding. In addition, the cover plate 8 can also support the rotation of the drive shaft 72 to ensure that the grinding head 2 rotates stably. The distance between the cover plate 8 and the connecting head 71 meets the needs of moving the grinding head 2 to adjust different grinding degrees;

[0041] The cover plate 8 is provided with a feeding pipe 9 for adding coffee beans into the grinding box 1, and the feeding pipe 9 is used to add coffee beans into the grinding box 1 for grinding.

[0042] Please refer to Figure 1 , the bottom of the grinding box 1 is fixedly connected with a discharge head 10, the discharge head 10 is threadedly connected to the bottom opening of the grinding box 1, and is used to guide the ground coffee. The outer surface of the discharge head 10 is fixedly connected with a push block 11, and the push block 11 is used to provide an operating point, so that the discharge head 10 can be easily screwed on or off through the push block 11.

[0043] Please refer to Figure 1 , the outer surface of the grinding box 1 is fixedly connected with a support rod 12, the center line of the support rod 12 is perpendicular to the center line of the grinding box 1, and the end of the support rod 12 away from the grinding box 1 is fixedly connected with a mounting plate 13, and the mounting plate 13 is used to install the grinding box 1 in the coffee machine.

[0044] Finally, it is explained that the above-mentioned embodiments are only preferred embodiments of the present application, and cannot be used to limit the scope of protection of the present application, and any non-essential changes and substitutions made by those skilled in the art on the basis of the present application all belong to the scope of protection required by the present application.

Claims

1. A self-service coffee machine bean grinding device, characterized in that: It includes a funnel-shaped grinding box (1) and a frustum-shaped grinding head (2). The interior of the grinding box (1) consists of a fine grinding chamber (3) and a coarse grinding chamber (4) from bottom to top. The outer surface of the grinding head (2) is arranged from bottom to top with a set of fine grinding blades (5) and a set of coarse grinding blades (6), and the gap between the fine grinding blades (5) and the fine grinding chamber (3) is smaller than the gap between the coarse grinding blades (6) and the coarse grinding chamber (4). The grinding head (2) is provided with a drive assembly (7) for driving the grinding head (2) to rotate and grind coffee beans, and for adjusting the depth of the grinding head (2) extending into the grinding box (1).

2. The self-service coffee machine bean grinding device according to claim 1, characterized in that: The drive assembly (7) includes a connector (71) fixedly connected to the top of the grinding head (2), a drive shaft (72) fixedly connected to the connector (71), and a first power source (73) connected to the other end of the drive shaft (72), and the first power source (73) is mounted on the lifting mechanism (74).

3. The self-service coffee machine bean grinding device according to claim 2, characterized in that: The lifting mechanism (74) includes a lifting seat (741) for mounting the first power source (73). A threaded rod (742) is threadedly connected to the lifting seat (741). Mounting seats (743) are respectively provided at both ends of the threaded rod (742). A second power source (744) for driving the threaded rod (742) to rotate is fixed on the mounting seat (743) located at the top of the threaded rod (742).

4. The self-service coffee machine bean grinding device according to claim 3, characterized in that: An auxiliary slide rod (745) is also provided on the lifting seat (741), and the two ends of the auxiliary slide rod (745) are respectively fixedly connected to the two mounting seats (743).

5. The self-service coffee machine bean grinding device according to claim 4, characterized in that: A sealing plate (8) is fixedly provided at the top opening of the grinding box (1). The sealing plate (8) is fixedly connected to the mounting base (743) located at the bottom of the threaded rod (742). A feed pipe (9) for adding coffee beans into the grinding box (1) is provided on the sealing plate (8).

6. The self-service coffee machine bean grinding device according to claim 1, characterized in that: The bottom of the grinding box (1) is fixedly connected to a discharge head (10), and the outer surface of the discharge head (10) is fixedly connected to a paddle block (11).

7. The self-service coffee machine bean grinding device according to claim 1, characterized in that: A support rod (12) is fixedly connected to the outer surface of the grinding box (1). The center line of the support rod (12) is perpendicular to the center line of the grinding box (1), and a mounting plate (13) is fixedly connected to the end of the support rod (12) away from the grinding box (1).

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