Cutter head of coffee bean grinder

Abstract

The utility model discloses a coffee bean grinder cutterhead which comprises an outer cutterhead and an inner cutter head rotationally arranged in the outer cutterhead, a first inner cutter ring and a second inner cutter ring are arranged on the inner wall of the outer cutterhead, a first outer cutter ring, a second outer cutter ring and a chamfering ring are arranged on the outer wall of the inner cutter head, a first containing cavity is formed between the first inner cutter ring and the first outer cutter ring, and a second containing cavity is formed between the second inner cutter ring and the second outer cutter ring. A second containing cavity is formed among the second inner cutter ring, the second outer cutter ring and the chamfering ring, and the first containing cavity is communicated with the second containing cavity. The cutter head of the coffee bean grinder is good in grinding effect, can prevent coffee powder from being blocked at an outlet, and effectively improves the coffee bean grinding and powder discharging efficiency and powder discharging quality.

Description

Technical Field

[0001] The utility model relates to the technical field of coffee bean grinding devices, in particular to a knife disc of a coffee bean grinder. Background Art

[0002] Coffee is a popular beverage that can refresh the mind and relieve brain and muscle fatigue. With the improvement of living standards, people begin to pay attention to the quality of life. Therefore, more and more people choose to buy coffee bean grinders at home to grind coffee beans into coffee powder so that they can enjoy coffee at any time. However, when the existing manual grinder blade is grinding, the coffee beans are squeezed and crushed, the particle size varies greatly, and the uniformity of the particle size is poor, which easily leads to blockage at the blade outlet, affecting the powder output efficiency and quality, and has certain limitations. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies in the prior art and provide a coffee bean grinder blade which has good grinding effect, can avoid clogging of coffee powder at the outlet, and effectively improves the coffee bean grinding efficiency and the powder output quality.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A coffee bean grinder blade, comprising an outer blade disc and an inner blade head rotatably disposed within the outer blade disc, wherein the inner wall of the outer blade disc is provided with a first inner blade ring and a second inner blade ring from top to bottom, and the outer wall of the inner blade head is provided with a first outer blade ring, a second outer blade ring and a chamfering ring from top to bottom, a first cavity is formed between the first inner blade ring and the first outer blade ring, a second cavity is formed between the second inner blade ring, the second outer blade ring and the chamfering ring, and the first cavity is connected to the second cavity.

[0006] As a further improvement of the above technical solution:

[0007] The first inner cutter ring and the second inner cutter ring are both tapered, the large diameter end of the first inner cutter ring is connected to the top surface of the outer cutter disc, the small diameter end of the first inner cutter ring is connected to the small diameter end of the second inner cutter ring, and the large diameter end of the second inner cutter ring is connected to the bottom surface of the outer cutter disc;

[0008] The inner cutter head is tapered as a whole, the small diameter end of the inner cutter head is connected to the first outer cutter ring, and the large diameter end of the inner cutter head is connected to the chamfering ring.

[0009] The first inner cutter ring has a plurality of groups of first grinding teeth in an annular array, and a first material guide groove is formed between any two adjacent groups of the first grinding teeth; the second inner cutter ring has a plurality of groups of second grinding teeth in an annular array, and a second material guide groove is formed between any two adjacent groups of the second grinding teeth.

[0010] The first outer knife ring has a plurality of groups of first spiral grinding knives in an annular array, and a first spiral groove is formed between any two adjacent groups of the first spiral grinding knives; the second outer knife ring has a plurality of groups of second spiral grinding knives in an annular array, and a second spiral groove is formed between any two adjacent groups of the second spiral grinding knives.

[0011] The chamfered ring includes a first chamfered surface connected to the second outer cutter ring and a second chamfered surface connected to the bottom surface of the inner cutter head.

[0012] The inner cutter head is provided with an axial through hole for the rotating shaft to pass through.

[0013] Compared with the prior art, the advantages of the utility model are:

[0014] The coffee bean grinder blade of the utility model comprises an outer blade disc and an inner blade head, a first cavity is formed between the first inner blade ring and the first outer blade ring, a second cavity is formed between the second inner blade ring, the second outer blade ring and the chamfering ring, through the rotation of the inner blade head, the grinding process of the coffee beans in the first cavity is mainly extrusion and supplemented by cutting to obtain large particles, and the grinding process of the large particles in the second cavity is mainly cutting and supplemented by extrusion, the grinding effect is good, and coffee powder with small particle size difference and uniform particle coarseness is obtained, when the inner blade head rotates, the chamfering ring will not cause extrusion to the coffee powder, which can avoid clogging of the coffee powder at the outlet, and effectively improve the powder output efficiency and powder output quality of the coffee bean grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of a coffee bean grinder with its blade disc disassembled.

[0016] Figure 2 It is a cross-sectional schematic diagram of the knife disc of a coffee bean grinder.

[0017] Figure 3 Schematic diagram of the cross-sectional structure of the outer cutter disc.

[0018] Figure 4 This is a schematic diagram of the half-section structure of the outer cutter disc.

[0019] Figure 5 It is a schematic diagram of the cross-sectional structure of the inner cutter head.

[0020] Figure 6 for Figure 5 Enlarged view of detail A.

[0021] Figure 7 This is a schematic diagram of the half-section structure of the inner cutter head.

[0022] Figure 8 yes Figure 7 Enlarged view of detail B.

[0023] Legend:

[0024] 1. Outer cutter disc; 101. First inner cutter ring; 102. Second inner cutter ring; 2. Inner cutter head; 201. First outer cutter ring; 202. Second outer cutter ring; 203. Chamfering ring; 204. Axial through hole; 3. First cavity; 4. Second cavity; 5. First grinding tooth; 6. First material guide groove; 7. Second grinding tooth; 8. Second material guide groove; 9. First spiral grinding blade; 10. First spiral groove; 11. Second spiral grinding blade; 12. Second spiral groove; 13. First chamfered surface; 14. Second chamfered surface. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] like Figures 1 to 8 As shown, the coffee bean grinder blade of this embodiment includes an outer blade disc 1 and an inner blade head 2 rotatably arranged in the outer blade disc 1, the inner wall of the outer blade disc 1 is provided with a first inner blade ring 101 and a second inner blade ring 102 from top to bottom, the outer wall of the inner blade head 2 is provided with a first outer blade ring 201, a second outer blade ring 202 and a chamfering ring 203 from top to bottom, a first cavity 3 is formed between the first inner blade ring 101 and the first outer blade ring 201, a second cavity 4 is formed between the second inner blade ring 102 and the second outer blade ring 202 and the chamfering ring 203, and the first cavity 3 is connected to the second cavity 4. The coffee bean grinder blade comprises an outer blade disc 1 and an inner blade head 2, a first cavity 3 is formed between the first inner blade ring 101 and the first outer blade ring 201, a second cavity 4 is formed between the second inner blade ring 102 and the second outer blade ring 202 and the chamfering ring 203, through the rotation of the inner blade head 2, the grinding process of the coffee beans in the first cavity 3 is mainly extrusion and supplemented by cutting to obtain large particles, and the grinding process of the large particles in the second cavity 4 is mainly cutting and supplemented by extrusion, the grinding effect is good, and coffee powder with small particle size difference and uniform particle coarseness is obtained, when the inner blade head 2 rotates, the chamfering ring 203 will not cause extrusion to the coffee powder, which can avoid the coffee powder from being blocked at the outlet, and effectively improve the powder output efficiency and powder output quality of the coffee bean grinding.

[0027] Preferably, the first inner cutter ring 101 and the second inner cutter ring 102 are both tapered, the large diameter end of the first inner cutter ring 101 is connected to the top surface of the outer cutter disc 1, the small diameter end of the first inner cutter ring 101 is connected to the small diameter end of the second inner cutter ring 102, and the large diameter end of the second inner cutter ring 102 is connected to the bottom surface of the outer cutter disc 1; the inner cutter head 2 is tapered as a whole, the small diameter end of the inner cutter head 2 is connected to the first outer cutter ring 201, and the large diameter end of the inner cutter head 2 is connected to the chamfering ring 203. In this embodiment, Figure 2 As shown, the first inner knife ring 101 is tapered, and the inner diameter of the cross section of the first inner knife ring 101 gradually decreases from top to bottom. The inner knife head 2 is tapered as a whole, and the outer diameter of the cross section of the first outer knife ring 201 gradually increases from top to bottom, that is, the cross-sectional width of the first cavity 3 gradually decreases from top to bottom; the second inner knife ring 102 is tapered, and the inner diameter of the cross section of the second inner knife ring 102 gradually increases from top to bottom, and the outer diameter of the cross section of the second outer knife ring 202 also gradually increases from top to bottom, but the taper of the second inner knife ring 102 is smaller than that of the second outer knife ring 202, that is, the cross-sectional width of the second cavity 4 also gradually decreases from top to bottom, which effectively improves the grinding efficiency and grinding quality of coffee beans, and the coffee powder is finer.

[0028] Preferably, the first inner cutter ring 101 has a plurality of groups of first grinding teeth 5 in an annular array, and a first material guide groove 6 is formed between any two adjacent groups of first grinding teeth 5; the second inner cutter ring 102 has a plurality of groups of second grinding teeth 7 in an annular array, and a second material guide groove 8 is formed between any two adjacent groups of second grinding teeth 7. In this embodiment, the number of groups of the second grinding teeth 7 is greater than the number of groups of the first grinding teeth 5, one group of first grinding teeth 5 corresponds to multiple groups of second grinding teeth 7, and the first grinding teeth 5 and the second grinding teeth 7 are both formed by the intersection of two planes, and the projection reference lines of the first grinding teeth 5 and the second grinding teeth 7 in the vertical direction intersect with the central axis of the inner cutter head 2, that is, the first grinding teeth 5 and the second grinding teeth 7 are arranged obliquely.

[0029] Preferably, the first outer knife ring 201 has a plurality of groups of first spiral grinding knives 9 in an annular array, and a first spiral groove 10 is formed between any two adjacent groups of first spiral grinding knives 9; the second outer knife ring 202 has a plurality of groups of second spiral grinding knives 11 in an annular array, and a second spiral groove 12 is formed between any two adjacent groups of second spiral grinding knives 11. In this embodiment, the number of groups of the second spiral grinding knives 11 is greater than the number of groups of the first spiral grinding knives 9, one group of the first spiral grinding knives 9 corresponds to multiple groups of the second spiral grinding knives 11, and the first spiral grinding knives 9 and the second spiral grinding knives 11 are arranged in an arc shape.

[0030] Preferably, the chamfered ring 203 includes a first chamfered surface 13 connected to the second outer cutter ring 202 and a second chamfered surface 14 connected to the bottom surface of the inner cutter head 2. In this embodiment, the chamfered ring 203 includes the first chamfered surface 13 and the second chamfered surface 14, wherein the angle between the first chamfered surface 13 and the bottom surface of the inner cutter head 2 is less than 90°, and the angle between the second chamfered surface 14 and the bottom surface of the inner cutter head 2 is equal to 90°, so that the gap between the chamfered ring 203 and the second grinding tooth 7 gradually increases from top to bottom, which is convenient for discharging the ground coffee powder.

[0031] Preferably, the inner cutter head 2 is provided with an axial through hole 204 for the rotating shaft to pass through.

[0032] In actual application, the outer cutter disc 1 is fixed, and a rotating shaft is installed in the axial through hole 204 of the inner cutter head 2. The rotating shaft rotates, thereby driving the inner cutter head 2 to rotate, and the coffee beans enter between the first inner cutter ring 101 and the first outer cutter ring 201, that is, the first cavity 3. Through the rotation of the first spiral grinding knife 9, the first grinding teeth 5 and the first spiral grinding knife 9 cooperate to perform preliminary grinding of the coffee beans. The grinding process is mainly based on extrusion and supplemented by cutting to obtain large particles; the large particles enter between the second inner cutter ring 102 and the second outer cutter ring 202, that is, the second cavity 3 through the first material guide groove 6 and the first spiral groove 10. In the cavity 4, through the rotation of the second spiral grinding knife 11, the second grinding teeth 7 and the second spiral grinding knife 11 are used to grind the large particles again. The grinding process is mainly cutting and supplemented by extrusion to obtain small particles. The small particles enter between the second inner knife ring 102 and the chamfered ring 203 through the second material guide groove 8 and the second spiral groove 12. The gap between the first chamfered surface 13 and the second chamfered surface 14 and the second grinding teeth 7 is large, which will not cause extrusion to the small particles. It can ensure that the coffee powder is discharged evenly, avoid coffee powder clogging at the outlet, and effectively improve the coffee bean grinding efficiency and powder output quality.

[0033] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. For those skilled in the art, improvements and changes obtained without departing from the technical concept of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A coffee bean grinder blade, comprising an outer blade (1) and an inner blade head (2) rotatably disposed in the outer blade (1), characterized in that: The inner wall of the outer cutter disc (1) is provided with a first inner cutter ring (101) and a second inner cutter ring (102) from top to bottom, and the outer wall of the inner cutter head (2) is provided with a first outer cutter ring (201), a second outer cutter ring (202) and a chamfering ring (203) from top to bottom; a first cavity (3) is formed between the first inner cutter ring (101) and the first outer cutter ring (201); a second cavity (4) is formed between the second inner cutter ring (102), the second outer cutter ring (202) and the chamfering ring (203); and the first cavity (3) is communicated with the second cavity (4); The chamfered ring (203) comprises a first chamfered surface (13) connected to the second outer cutter ring (202) and a second chamfered surface (14) connected to the bottom surface of the inner cutter head (2), the angle between the first chamfered surface (13) and the bottom surface of the inner cutter head (2) being less than 90°, and the angle between the second chamfered surface (14) and the bottom surface of the inner cutter head (2) being equal to 90°; The first inner cutter ring (101) and the second inner cutter ring (102) are both arranged in a tapered manner; the large diameter end of the first inner cutter ring (101) is connected to the top surface of the outer cutter disc (1), the small diameter end of the first inner cutter ring (101) is connected to the small diameter end of the second inner cutter ring (102), and the large diameter end of the second inner cutter ring (102) is connected to the bottom surface of the outer cutter disc (1).

2. The coffee bean grinder blade according to claim 1, characterized in that: The inner cutter head (2) is configured as a whole in a tapered manner; the small diameter end of the inner cutter head (2) is connected to the first outer cutter ring (201), and the large diameter end of the inner cutter head (2) is connected to the chamfering ring (203).

3. The coffee bean grinder blade according to claim 2, characterized in that: The first inner cutter ring (101) has a plurality of groups of first grinding teeth (5) in an annular array, and a first material guide groove (6) is formed between any two adjacent groups of the first grinding teeth (5); the second inner cutter ring (102) has a plurality of groups of second grinding teeth (7) in an annular array, and a second material guide groove (8) is formed between any two adjacent groups of the second grinding teeth (7).

4. The coffee bean grinder blade according to claim 3, characterized in that: The first outer knife ring (201) has a plurality of groups of first spiral grinding knives (9) in an annular array, and a first spiral groove (10) is formed between any two adjacent groups of the first spiral grinding knives (9); the second outer knife ring (202) has a plurality of groups of second spiral grinding knives (11) in an annular array, and a second spiral groove (12) is formed between any two adjacent groups of the second spiral grinding knives (11).

5. The coffee bean grinder blade according to any one of claims 1 to 4, characterized in that: The inner cutter head (2) is provided with an axial through hole (204) for the rotating shaft to pass through.

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