Anti-blocking self-service coffee machine

Abstract

The utility model relates to the technical field of coffee machines, in particular to an anti-blocking self-service coffee machine which comprises a coffee machine body, a grinding box, a grinding head, a grinding cutter, a filtering ring and a knocking assembly. Coffee powder generated after grinding is filtered through the filter screen, so that the coffee powder reaching the target grinding degree leaks out of the grinding box downwards through the filter screen, and the coffee powder not reaching the target grinding degree continues to be ground in the grinding box, and due to the fact that the bottom of the grinding cutter and the filter screen are located on the same horizontal plane, the grinding efficiency is improved. Further, when the grinding cutter rotates, large coffee particles above the filter screen can be effectively and continuously ground, and the situation that in the grinding process, the large coffee particles are accumulated between the grinding cutter and the filter screen, waste is caused, and the filter screen is blocked is avoided; and large-particle coffee powder can be vibrated to the upper layer of the coffee powder to be continuously ground until the target grinding degree is reached, so that the filter screen is prevented from being blocked by the large-particle coffee powder.

Description

Technical Field

[0001] The utility model relates to the technical field of coffee machines, in particular to an anti-clogging self-service coffee machine. Background Art

[0002] A self-service coffee machine is a device designed to automatically make and sell coffee drinks. The self-service coffee machines on the market will have a metal filter under the grinding head to filter the ground coffee powder to control the degree of grinding of the coffee. The metal filter can be reused many times and has lower cost.

[0003] However, there is a vertical gap between the metal filter and the grinder of the existing self-service coffee machine, which makes it easy for larger particles of coffee powder to accumulate on the metal filter, making it impossible to grind effectively, resulting in waste of coffee powder and affecting the taste of the final brewed coffee. At the same time, the larger coffee powder particles produced by insufficient grinding can easily cause the metal filter to clog, affecting the normal use of the equipment. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide an anti-clogging self-service coffee machine to solve the technical problem that there is a gap in the vertical direction between the metal filter and the grinding knife of the self-service coffee machine in the prior art, which makes it easy for larger particles of coffee powder to accumulate on the metal filter, resulting in waste of coffee powder and easy clogging of the metal filter, affecting the normal use of the equipment.

[0005] The utility model is achieved through the following technical solutions:

[0006] A self-service coffee machine with an anti-clogging function comprises a coffee machine body, a grinding box installed inside the coffee machine body, and a grinding head for cooperating with the grinding box to grind coffee beans, wherein a plurality of grinding blades are evenly distributed on the outer surface of the middle portion of the grinding head;

[0007] A filter ring is installed in the gap between the grinding box and the grinding head. The filter ring is located below the grinding knife and is in contact with the grinding knife. A knocking assembly is also installed at the bottom of the grinding head for knocking the filter ring to generate vibration when the grinding head rotates.

[0008] Furthermore, the knocking assembly includes a sleeve fixedly mounted on the bottom end surface of the grinding head, an elastic reset mechanism is installed in the sleeve, and a knocking rod is connected to the elastic reset mechanism;

[0009] A through slot is provided on the sleeve, and the free end of the knocking rod passes through the through slot and extends out of the sleeve. A protrusion is installed below the filter ring.

[0010] Furthermore, the elastic reset mechanism includes a first rod body inserted into the sleeve, and the first rod body is slidably connected to the inner wall of the sleeve;

[0011] The lower end surface of the first rod is fixedly connected to a second rod with a diameter smaller than that of the first rod, and a spring is sleeved on the second rod;

[0012] A limiting ring is fixedly connected to the inner wall of the lower end of the sleeve, and the inner wall of the limiting ring is slidably connected to the second rod body.

[0013] Furthermore, the knocking rod includes a third rod body fixedly connected to the first rod body, and the height of the third rod body is smaller than the height of the through slot;

[0014] The end portion of the third rod extending out of the sleeve is fixedly connected to a mounting seat, and a roller is installed on a side of the mounting seat facing the filter ring.

[0015] Furthermore, the filter ring includes an outer ring, an inner ring, and a filter mesh fixedly connected between the outer ring and the inner ring;

[0016] The outer ring is fixedly connected to the grinding box, the bottom of the grinding head extends into the inner ring, and the upper surface of the inner ring contacts the bottom of the grinding blade.

[0017] Furthermore, a discharge hopper is detachably mounted on the bottom of the grinding box, and a first fixing hole and a second fixing hole are respectively formed on opposite surfaces of the grinding box and the discharge hopper, and a fixing bolt is threadedly connected to both fixing holes.

[0018] Furthermore, the bottom end surface of the grinding box is also provided with a mounting groove connected to the first fixing hole, and a support ear is fixedly connected to the outer circumferential surface of the outer ring, and the support ear is consistent with the shape of the mounting groove, and a third fixing hole is provided on the support ear, and the third fixing hole coincides with the center line of the first fixing hole.

[0019] The beneficial effects of the present invention are:

[0020] 1. When the anti-clogging self-service coffee machine of the present invention is in use, the motor drives the grinding head to rotate and cooperate with the grinding box to grind the coffee beans entering the grinding box. The coffee powder produced after grinding is filtered through the filter ring, so that the coffee powder that reaches the target grinding degree leaks out of the grinding box downward through the filter ring, while the coffee powder that does not reach the target grinding degree continues to be ground in the grinding box. Since the bottom of the grinding knife and the filter are on the same horizontal plane, the grinding knife can effectively grind the larger coffee particles above the filter ring when rotating, thereby preventing the larger coffee particles generated during the grinding process from accumulating between the grinding knife and the filter ring, causing waste and clogging the filter.

[0021] 2. When the grinding head drives the grinding knife to rotate for grinding, the knocking assembly knocks the filter ring to generate slight vibration, thereby accelerating the coffee powder that reaches the target grinding degree to pass through the filter ring, and can shake out larger particles of coffee powder to the upper layer of coffee powder, which is conducive to continuing to grind larger particles of coffee powder until the target grinding degree is reached, ensuring that the coffee beans are fully ground. The vibration generated by knocking can prevent larger particles of coffee powder from clogging the filter ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the installation position of the grinding box of the anti-clogging self-service coffee machine of the present invention.

[0023] Figure 2 This is a cross-sectional view of the grinding box of the anti-clogging self-service coffee machine of the present invention.

[0024] Figure 3 This is a schematic diagram of the connection between the outer ring, inner ring and filter screen of the anti-clogging self-service coffee machine of the present invention.

[0025] Figure 4 This is a cross-sectional view of the sleeve of the anti-clogging self-service coffee machine of the present invention.

[0026] Figure 5 For the utility model Figure 2 Enlarged view of point A in the middle.

[0027] Figure 6 This is a schematic structural diagram of the protrusion of the anti-clogging self-service coffee machine of the present invention.

[0028] In the figure: 1. Coffee machine body, 2. Grinding box, 3. Grinding head, 4. Grinding blade, 5. Sleeve, 6. Through slot, 7. Knocking rod, 8. Bump, 9. First rod, 10. Second rod, 11. Spring, 12. Limiting ring, 13. Third rod, 14. Mounting seat, 15. Roller, 16. Outer ring, 17. Inner ring, 18. Filter, 19. Hopper, 20. First fixing hole, 21. Second fixing hole, 22. Fixing bolt, 23. Mounting slot, 24. Ear, 25. Third fixing hole. DETAILED DESCRIPTION

[0029] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various variations in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially for illustrative purposes and are not intended to limit the present invention.

[0030] In the description of this application, the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These are 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, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on this application.

[0031] See also Figures 1 to 3 The utility model provides a technical solution: an anti-clogging self-service coffee machine, comprising a coffee machine body 1 and a grinding box 2 installed inside the coffee machine body 1, a grinding disc installed on the inner wall of the grinding box 2, and a grinding head 3 for cooperating with the grinding box 2 to grind coffee beans, wherein a plurality of grinding blades 4 are evenly distributed on the outer surface of the middle portion of the grinding head 3;

[0032] A filter ring is installed in the gap between the grinding box 2 and the grinding head 3. The filter ring is located below the grinding blade 4. The filter ring includes an outer ring 16, an inner ring 17, and a filter screen 18 fixedly connected between the outer ring 16 and the inner ring 17. The filter screen 18, the inner ring 17, and the upper surfaces of the outer ring 16 are on the same horizontal plane. The outer ring 16 is fixedly connected to the grinding box 2. The bottom of the grinding head 3 extends into the inner ring 17. The inner ring 17 can support and assist the grinding head 3 to rotate stably, and the upper surface of the inner ring 17 contacts the bottom of the grinding blade 4.

[0033] The bottom of the grinding head 3 is also equipped with a knocking assembly for knocking the filter ring to generate vibration when the grinding head 3 rotates;

[0034] When the anti-clogging self-service coffee machine of the present invention is in use, the motor drives the grinding head 3 to rotate and cooperate with the grinding box 2 to grind the coffee beans entering the grinding box 2. The coffee powder produced after grinding is filtered through the filter 18, so that the coffee powder that reaches the target grinding degree flows downward through the filter 18 and flows out of the grinding box 2, while the coffee powder that does not reach the target grinding degree continues to be ground in the grinding box 2. Since the bottom of the grinding knife 4 and the filter 18 are on the same horizontal plane, the grinding knife 4 can effectively grind the larger coffee particles above the filter 18 when rotating, thereby preventing the larger coffee particles generated during the grinding process from accumulating between the grinding knife 4 and the filter 18, causing waste and clogging the filter 18.

[0035] Secondly, when the grinding head 3 drives the grinding knife 4 to rotate for grinding, the knocking component knocks the filter ring to generate slight vibration, thereby accelerating the coffee powder that reaches the target grinding degree to pass through the filter 18, and can shake out larger particles of coffee powder to the upper layer of coffee powder, which is conducive to continuing to grind larger particles of coffee powder until the target grinding degree is reached, ensuring that the coffee beans are fully ground, and the vibration generated by knocking can prevent larger particles of coffee powder from clogging the filter 18.

[0036] See also Figure 2 、 Figure 4 、 Figure 5 and Figure 6 The knocking assembly includes a sleeve 5 fixedly mounted on the bottom end surface of the grinding head 3, an elastic reset mechanism is installed in the sleeve 5, and the elastic reset mechanism includes a first rod body 9 inserted in the sleeve 5, the first rod body 9 is slidably connected to the inner wall of the sleeve 5, the lower end surface of the first rod body 9 is fixedly connected to a second rod body 10 with a diameter smaller than the first rod body 9, and a spring 11 is sheathed on the outer surface of the second rod body 10, a limiting ring 12 is fixedly connected to the inner wall of the lower end of the sleeve 5, the inner wall of the limiting ring 12 is slidably connected to the second rod body 10, and the lower end of the second rod body 10 extends into the limiting ring 12, and the limiting ring 12 is used to limit the spring 11 so that the spring 11 is stably installed in the sleeve 5;

[0037] The elastic reset mechanism is connected to a knocking rod 7, a through slot 6 is provided on the sleeve 5, and the free end of the knocking rod 7 passes through the through slot 6 and extends out of the sleeve 5. A protrusion 8 is installed under the filter ring, and the two ends of the protrusion 8 are stepped, one end of which is an inclined step and the other end is a right-angle step;

[0038] The knocking rod 7 includes a third rod 13 fixedly connected to the first rod 9. The height of the third rod 13 is less than the height of the through slot 6, thereby increasing the movement space of the third rod 13. The end of the third rod 13 extending from the sleeve 5 is fixedly connected to a mounting seat 14. A roller 15 is installed on the side of the mounting seat 14 facing the filter ring.

[0039] When the grinding head 3 rotates to grind the coffee beans, the grinding head 3 drives the sleeve 5 and the knocking rod 7 to perform circular motion. During the circular motion of the knocking rod 7, the roller 15 performs synchronous circular motion and rolls along the bottom surface of the inner ring 17. The protrusion 8 is fixedly connected to the bottom surface of the inner ring 17 and is located on the motion trajectory of the roller 15. Then, when the roller 15 moves along the inclined surface of the protrusion 8 to the bottom of the protrusion 8, the protrusion 8 squeezes and pushes the roller 15 downward for a distance, and simultaneously drives the third rod 13 to drive the first rod 9 and the second rod 10 to move downward. During the movement, the first rod 9 squeezes the spring 11;

[0040] When the roller 15 moves from the protrusion 8 and approaches the inner ring 17 again, the distance between the roller 15 and the inner ring 17 decreases rapidly in a step-like manner, and then the thrust generated by the spring 11 deforming back to its original shape pushes the roller 15 to collide with the inner ring 17, thereby knocking the filter ring to generate vibration, shaking larger particles of coffee powder out to the upper layer of coffee powder for further grinding, and preventing larger particles of coffee powder from clogging the filter 18.

[0041] See also Figure 2 and Figure 3 The bottom of the grinding box 2 is detachably mounted with a discharge hopper 19, which facilitates the centralized discharge of coffee powder that has reached the grinding degree out of the grinding box 2. The grinding box 2 and the discharge hopper 19 are respectively provided with a first fixing hole 20 and a second fixing hole 21 on the opposite sides thereof. The fixing holes are threaded holes, and a fixing bolt 22 is threadedly connected to the two fixing holes. The grinding box 2 and the discharge head can be fixed together by installing the fixing bolt 22 in the first fixing hole 20 and the second fixing hole 21.

[0042] The bottom end surface of the grinding box 2 is further provided with a mounting groove 23 connected to the first fixing hole 20. A support ear 24 is fixedly connected to the outer circumferential surface of the outer ring 16. The support ear 24 matches the shape of the mounting groove 23, and a third fixing hole 25 is provided on the support ear 24. The third fixing hole 25 coincides with the center line of the first fixing hole 20. When the filter ring is installed in the grinding box 2 through the support ear 24, the fixing bolt 22 is sequentially passed through the second fixing hole 21, the third fixing hole 25 and the first fixing hole 20, so that the grinding box 2, the filter ring and the discharge hopper 19 can be fixed and connected as one.

[0043] Finally, it should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A self-service coffee machine with an anti-clogging function, comprising a coffee machine body (1), a grinding box (2) installed inside the coffee machine body (1), and a grinding head (3) for cooperating with the grinding box (2) to grind coffee beans, characterized in that: A plurality of grinding knives (4) are evenly distributed on the outer surface of the middle portion of the grinding head (3); A filter ring is installed in the gap between the grinding box (2) and the grinding head (3). The filter ring is located below the grinding knife (4) and is in contact with the grinding knife (4). A knocking assembly is also installed at the bottom of the grinding head (3) for knocking the filter ring to generate vibration when the grinding head (3) rotates.

2. The anti-clogging self-service coffee machine according to claim 1, characterized in that: The knocking assembly comprises a sleeve (5) fixed on the bottom end surface of the grinding head (3), an elastic reset mechanism is installed in the sleeve (5), and a knocking rod (7) is connected to the elastic reset mechanism; A through slot (6) is provided on the sleeve (5), and the free end of the knocking rod (7) passes through the through slot (6) and extends out of the sleeve (5). A protrusion (8) is installed below the filter ring.

3. The anti-clogging self-service coffee machine according to claim 2, characterized in that: The elastic reset mechanism comprises a first rod (9) inserted into the sleeve (5), and the first rod (9) is slidably connected to the inner wall of the sleeve (5); The lower end surface of the first rod body (9) is fixedly connected to a second rod body (10) having a smaller diameter than the first rod body (9), and a spring (11) is sheathed on the second rod body (10); A limiting ring (12) is fixedly connected to the inner wall of the lower end of the sleeve (5), and the inner wall of the limiting ring (12) is slidably connected to the second rod body (10).

4. The anti-clogging self-service coffee machine according to claim 3, characterized in that: The knocking rod (7) comprises a third rod body (13) fixedly connected to the first rod body (9), and the height of the third rod body (13) is smaller than the height of the through slot (6); The end of the third rod (13) extending out of the sleeve (5) is fixedly connected to a mounting seat (14), and a roller (15) is installed on the side of the mounting seat (14) facing the filter ring.

5. The anti-clogging self-service coffee machine according to claim 1, characterized in that: The filter ring comprises an outer ring (16), an inner ring (17), and a filter screen (18) fixedly connected between the outer ring (16) and the inner ring (17); The outer ring (16) is fixedly connected to the grinding box (2), the bottom of the grinding head (3) extends into the inner ring (17), and the upper surface of the inner ring (17) contacts the bottom of the grinding blade (4).

6. The anti-clogging self-service coffee machine according to claim 5, characterized in that: A discharge hopper (19) is detachably mounted on the bottom of the grinding box (2); a first fixing hole (20) and a second fixing hole (21) are respectively provided on opposing surfaces of the grinding box (2) and the discharge hopper (19); and a fixing bolt (22) is threadedly connected to the two fixing holes.

7. The anti-clogging self-service coffee machine according to claim 6, characterized in that: The bottom end surface of the grinding box (2) is further provided with a mounting groove (23) connected to the first fixing hole (20); a support ear (24) is fixedly connected to the outer circumferential surface of the outer ring (16); the support ear (24) matches the outer shape of the mounting groove (23); and a third fixing hole (25) is provided on the support ear (24); the third fixing hole (25) coincides with the center line of the first fixing hole (20).

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