Bean grinder

Abstract

The utility model discloses a bean grinder which comprises a grinding mechanism and a driving mechanism, the grinding mechanism comprises a grinding seat, a grinding cutter set and a powder storage bin, the grinding cutter set comprises a fixed grinding cutter and a movable grinding cutter, the fixed grinding cutter is arranged in the grinding seat, the grinding seat is connected with a movable cutter positioning seat, the movable grinding cutter is rotationally connected to the movable cutter positioning seat, and the movable cutter positioning seat is connected with the driving mechanism. A bean grinding cavity used for containing beans to be ground is formed in the position, located above the powder grinding cutter set, of the powder grinding base, the powder storage bin is connected to the lower end of the powder grinding base and used for bearing powder ground by the powder grinding cutter set, the powder grinding base is further connected with a connecting shaft driving the movable powder grinding cutter to rotate, and the driving mechanism is connected with the connecting shaft to drive the movable powder grinding cutter to rotate. And the movable cutter positioning seat is provided with a wear-resistant sheet which is in frictional contact with the movable grinding cutter. According to the bean grinder disclosed by the utility model, the wear-resistant sheet which is in frictional contact with the movable grinding cutter is arranged on the movable cutter positioning seat, and the wear-resistant sheet can be made of a stainless steel material, so that the wear of the movable cutter positioning seat can be reduced, the service life of the grinding mechanism is prolonged, and the bean grinder is simple in structure and low in cost.

Description

Technical Field

[0001] The utility model relates to a powder grinding mechanism, in particular to a bean grinder. Background Art

[0002] Coffee is a favorite drink of people, and people often use a bean grinder to grind their favorite coffee. The grinding mechanism of the bean grinder grinds coffee beans through the cooperation of the fixed grinding knife and the movable grinding knife of the grinder. In order to reduce costs in the prior art, many components are made of plastic injection molding, but the movable knife positioning seat made of plastic can meet the requirements using a manual drive mechanism, but when an electric drive mechanism (high speed) is used, the movable grinding knife will wear out and fail due to the high-speed rotation of the movable knife positioning seat relative to the movable knife positioning seat.

[0003] The utility model is proposed in view of the deficiencies in the prior art. Utility Model Content

[0004] The movable knife positioning seat made of plastic in the prior art mentioned above will wear out and fail due to the high-speed rotation of the movable grinding knife relative to the movable knife positioning seat when using an electric drive mechanism. The utility model adopts the following technical solution to solve the technical problem: a bean grinder comprises: a grinding mechanism and a driving mechanism, the grinding mechanism comprises: a grinding seat, a grinding knife group and a powder storage bin, the grinding knife group comprises: a fixed grinding knife and a movable grinding knife, the fixed grinding knife is arranged in the grinding seat, the grinding seat is connected with a movable knife positioning seat for installing the movable grinding knife, the movable grinding knife is rotatably connected to the movable knife positioning seat and can cooperate with the fixed grinding knife to grind powder, the grinding seat is provided with a grinding cavity for placing beans to be ground and is located above the grinding knife group, the powder storage bin is connected to the lower end of the grinding seat for receiving powder ground by the grinding knife group, the grinding seat is also connected with a connecting shaft for driving the movable grinding knife to rotate, the driving mechanism is connected with the connecting shaft to drive the movable grinding knife to rotate, and the movable knife positioning seat is provided with a wear-resistant sheet in frictional contact with the movable grinding knife.

[0005] In the coffee bean grinder as described above, the lower end of the connecting shaft is connected to a driving disk, the driving disk is located between the moving grinding knife and the wear-resistant sheet, the lower end of the connecting shaft is provided with a driving head, the driving disk is provided with a driving port that slidably cooperates with the driving head, and a connecting pin is provided between the driving disk and the moving grinding knife to enable the moving grinding knife to rotate with the driving disk.

[0006] In the coffee bean grinder as described above, the portion of the driving disc that is in sliding contact with the wear-resistant sheet is provided with an annular contact protrusion.

[0007] In the coffee grinder as described above, the wear-resistant sheet is provided with a downwardly bent positioning foot, and the movable knife positioning seat is provided with a positioning hole for the positioning foot to be inserted into.

[0008] In the coffee bean grinder as described above, a positioning frame for positioning the connecting shaft is provided on the grinding seat, the upper part of the connecting shaft is rotatably connected to the positioning frame, and a spring for driving the movable grinding knife to be in close contact with the wear-resistant sheet is sleeved on the connecting shaft, and the spring is located between the positioning frame and the movable grinding knife.

[0009] In the coffee bean grinder as described above, the lower end of the grinding seat is connected to a connecting seat, the movable knife positioning seat is connected between the grinding seat and the connecting seat and can slide up and down between the two, and the grinding seat is provided with a coarseness adjustment block for adjusting the relative position of the movable knife positioning seat relative to the connecting seat and thereby adjusting the gap between the fixed grinding knife and the movable grinding knife.

[0010] In the coffee bean grinder as described above, the grinding seat is provided with a guide column for guiding the movable knife positioning seat, the coarseness adjustment block comprises: an adjustment ring and a toggle block, the adjustment ring is rotatably connected between the grinding seat and the connecting seat, the outer side wall of the movable knife positioning seat is provided with a stepped gear, the adjustment ring is provided with a push block that cooperates with the gear to adjust the gap between the fixed grinding knife and the movable grinding knife, so that when the adjustment ring is rotated, the push block cooperates with different positions of the gear to make the fixed grinding knife and the movable grinding knife be in different gaps.

[0011] In the coffee bean grinder as described above, the powder storage bin is threadedly connected to the lower end of the connecting seat.

[0012] In the coffee bean grinder as described above, the movable knife positioning seat is provided with a drop opening for the ground powder to fall into the powder storage bin.

[0013] In the coffee bean grinder as described above, the driving mechanism comprises: a docking seat, a docking joint and a power assembly for driving the docking seat to rotate, the upper end of the grinding seat is detachably connected to the docking seat, and the docking joint is matched and connected to the upper end of the connecting shaft.

[0014] The beneficial effects of the utility model are:

[0015] 1. The coffee bean grinder of the utility model is provided with a wear-resistant sheet on the moving knife positioning seat that is in frictional contact with the moving grinding knife. The wear-resistant sheet can be made of stainless steel material, which can reduce the wear of the moving knife positioning seat, thereby increasing the service life of the grinding mechanism, and has a simple structure and low cost.

[0016] 2. A driving disc is arranged between the dynamic grinding knife and the wear-resistant sheet, which has the advantages of convenient assembly and processing; and the second driving disc can be made of wear-resistant and pressure-resistant materials, which can increase the service life.

[0017] 3. The cross section of the annular contact protrusion is semicircular, which can change the surface contact between the driving disc and the wear-resistant plate to line contact, reduce friction and reduce the heat generated.

[0018] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the coffee bean grinder of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the grinding mechanism of the utility model;

[0021] Figure 3 This is one of the exploded schematic diagrams of the grinding mechanism of the utility model;

[0022] Figure 4 This is the second exploded schematic diagram of the grinding mechanism of the utility model;

[0023] Figure 5 It is a full cross-sectional schematic diagram of the grinding mechanism of the utility model;

[0024] Figure 6 It is a structural schematic diagram of the driving mechanism of the utility model. DETAILED DESCRIPTION

[0025] The implementation modes of the present utility model are described in detail below in conjunction with the accompanying drawings.

[0026] like Figures 1 to 6 As shown, a coffee bean grinder of this embodiment includes: a grinding mechanism 1 and a driving mechanism 2, wherein the grinding mechanism 1 includes: a grinding seat 11, a grinding knife group 12 and a powder storage bin 13, wherein the grinding knife group 12 includes: a fixed grinding knife 121 and a moving grinding knife 122, wherein the fixed grinding knife 121 is arranged in the grinding seat 11, and the grinding seat 11 is connected to a moving knife positioning seat 14 for mounting the moving grinding knife 122, wherein the moving grinding knife 122 is rotatably connected to the moving knife positioning seat 14 and can cooperate with the fixed grinding knife 121 For grinding, the grinding seat 11 is provided with a grinding chamber 1101 for placing beans to be ground above the grinding knife group 12, the powder storage bin 13 is connected to the lower end of the grinding seat 11 for receiving the powder after being ground by the grinding knife group 12, the grinding seat 11 is also connected with a connecting shaft 15 for driving the moving grinding knife 122 to rotate, the driving mechanism 2 is connected with the connecting shaft 15 to drive the moving grinding knife 122 to rotate, and the moving knife positioning seat 14 is provided with a wear-resistant sheet 16 in frictional contact with the moving grinding knife 122. The bean grinder of the utility model is provided with a wear-resistant sheet in frictional contact with the moving grinding knife on the moving knife positioning seat, and the wear-resistant sheet can be made of stainless steel, which can reduce the wear of the moving knife positioning seat, thereby increasing the service life of the grinding mechanism, and has a simple structure and low cost.

[0027] In this embodiment, a driving disc 17 is connected to the lower end of the connecting shaft 15, and the driving disc 17 is located between the dynamic grinding blade 122 and the wear-resistant sheet 16. A driving head 151 is provided at the lower end of the connecting shaft 15, and a driving port 171 is provided on the driving disc 17 to slide with the driving head 151. A connecting pin 172 is provided between the driving disc 17 and the dynamic grinding blade 122 to make the dynamic grinding blade 122 rotate with the driving disc 17. The driving disc is arranged between the dynamic grinding blade 122 and the wear-resistant sheet 16, which has two advantages. First, it is convenient for assembly and processing; second, the driving disc can be made of wear-resistant and pressure-resistant materials (such as cast iron), which can increase the service life.

[0028] In this embodiment, an annular contact protrusion 173 is provided at the portion where the drive disc 17 and the wear-resistant sheet 16 are in sliding contact. The cross section of the annular contact protrusion 173 is semicircular, which can change the surface contact between the drive disc 17 and the wear-resistant sheet 16 into line contact, thereby reducing friction and heat generation.

[0029] In this embodiment, the wear-resistant sheet 16 is provided with a downwardly bent positioning foot 161, and the movable knife positioning seat 14 is provided with a positioning hole 1401 for inserting the positioning foot 161. This design has the advantage of convenient assembly.

[0030] In this embodiment, a positioning frame 111 for positioning the connecting shaft 15 is provided on the grinding seat 11, and the upper part of the connecting shaft 15 is rotatably connected to the positioning frame 111. A spring 152 for driving the moving grinding knife 122 to be in close contact with the wear-resistant sheet 16 is sleeved on the connecting shaft 15, and the spring 152 is located between the positioning frame 111 and the moving grinding knife 122. The moving grinding knife 122 can be driven to be in close contact with the wear-resistant sheet 16 by the spring 152, so that the spacing between the moving grinding knife 122 and the fixed grinding knife is kept constant, so that the coarseness of the grinding is consistent.

[0031] In this embodiment, a connecting seat 18 is connected to the lower end of the grinding seat 11, and the movable knife positioning seat 14 is connected between the grinding seat 11 and the connecting seat 18 and can slide up and down between the two. The grinding seat 11 is provided with a coarseness adjustment block 19 for adjusting the relative position of the movable knife positioning seat 14 relative to the connecting seat 18 and thus adjusting the gap between the fixed grinding knife 121 and the movable grinding knife 122. The coarseness adjustment block 19 adjusts the relative position of the movable knife positioning seat 14 relative to the connecting seat 18 to adjust the gap between the fixed grinding knife 121 and the movable grinding knife 122, thereby adjusting the coarseness of the ground powder.

[0032] In this embodiment, a guide column 112 for guiding the movable blade positioning seat 14 is provided on the grinding seat 11, and the coarseness adjustment block 19 includes: an adjustment ring 191 and a toggle block 192, the adjustment ring 191 is rotatably connected between the grinding seat 11 and the connecting seat 18, the outer wall of the movable blade positioning seat 14 is provided with a step-shaped gear 141, and the adjustment ring 191 is provided with a push block 193 that cooperates with the gear 141 to adjust the gap between the fixed grinding blade 121 and the movable grinding blade 122, so that when the adjustment ring 191 is rotated, the push block 193 cooperates with different positions of the gear 141 to make the fixed grinding blade 121 and the movable grinding blade 122 in different gaps. Because the gear 141 is in a step-shaped shape, when the coarseness adjustment block is rotated, when the push block contacts different positions of the gear 141, the relative position of the movable blade positioning seat 14 relative to the connecting seat 18 can be adjusted, thereby achieving the adjustment of the coarseness of the ground powder.

[0033] In this embodiment, the powder storage bin 13 is threadedly connected to the lower end of the connecting seat 18 for easy disassembly and assembly.

[0034] The moving knife positioning seat 14 is provided with a drop opening 1402 for the ground powder to fall into the powder storage bin 13. The coffee beans are ground by the fixed grinding knife 121 and the moving grinding knife 122 and fall into the powder storage bin 13 through the drop opening.

[0035] like Figure 6 As shown, the driving mechanism 2 of this embodiment comprises: a docking seat 21, a docking joint 22 and a power assembly 23 for driving the docking seat 21 to rotate, the upper end of the grinding seat 11 is detachably connected to the docking seat 21, and the docking joint 22 is matched and connected with the upper end of the connecting shaft 15. When in use, first put the coffee beans into the grinding chamber, then match and connect the docking joint 22 with the upper end of the connecting shaft 15, and then install the upper end of the grinding seat 11 into the docking seat 21, and the power assembly 23 can drive the connecting shaft to rotate, thereby achieving grinding.

[0036] The above examples are only used to further illustrate the technical content of the utility model, so that readers can understand it more easily, but it does not mean that the implementation methods of the utility model are limited to this. Any technical extension or re-creation made based on the utility model is protected by the utility model. The protection scope of the utility model shall be based on the claims.

Claims

1. A coffee bean grinder, characterized in that: include: A grinding mechanism (1) and a driving mechanism (2), wherein the grinding mechanism (1) comprises: a grinding seat (11), a grinding knife group (12) and a powder storage bin (13), wherein the grinding knife group (12) comprises: a fixed grinding knife (121) and a movable grinding knife (122), wherein the fixed grinding knife (121) is arranged in the grinding seat (11), and the grinding seat (11) is connected to a movable knife positioning seat (14) for mounting the movable grinding knife (122), wherein the movable grinding knife (122) is rotatably connected to the movable knife positioning seat (14) and can cooperate with the fixed grinding knife (121) to grind powder, and wherein A grinding chamber (1101) for placing beans to be ground is provided on the grinding seat (11) and is located above the grinding knife group (12). The powder storage bin (13) is connected to the lower end of the grinding seat (11) and is used to receive powder ground by the grinding knife group (12). The grinding seat (11) is also connected to a connecting shaft (15) for driving a movable grinding knife (122) to rotate. The driving mechanism (2) is connected to the connecting shaft (15) to drive the movable grinding knife (122) to rotate. The movable knife positioning seat (14) is provided with a wear-resistant sheet (16) that is in frictional contact with the movable grinding knife (122).

2. A coffee bean grinder according to claim 1, characterized in that: The lower end of the connecting shaft (15) is connected to a driving disk (17), the driving disk (17) is located between the dynamic grinding knife (122) and the wear-resistant plate (16), the lower end of the connecting shaft (15) is provided with a driving head (151), the driving disk (17) is provided with a driving opening (171) that slidably cooperates with the driving head (151), and a connecting pin (172) is provided between the driving disk (17) and the dynamic grinding knife (122) so that the dynamic grinding knife (122) rotates along with the driving disk (17).

3. A coffee bean grinder according to claim 2, characterized in that: The portion of the driving disc (17) that is in sliding contact with the wear-resistant plate (16) is provided with an annular contact protrusion (173).

4. The coffee bean grinder according to claim 1, characterized in that: The wear-resistant sheet (16) is provided with a downwardly bent positioning foot (161), and the movable knife positioning seat (14) is provided with a positioning hole (1401) into which the positioning foot (161) is inserted.

5. The coffee bean grinder according to claim 2, characterized in that: The grinding seat (11) is provided with a positioning frame (111) for positioning the connecting shaft (15); the upper portion of the connecting shaft (15) is rotatably connected to the positioning frame (111); the connecting shaft (15) is sleeved with a spring (152) for driving the movable grinding knife (122) to be in close contact with the wear-resistant sheet (16); the spring (152) is located between the positioning frame (111) and the movable grinding knife (122).

6. A coffee bean grinder according to any one of claims 1 to 5, characterized in that: The lower end of the grinding seat (11) is connected to a connecting seat (18), the movable blade positioning seat (14) is connected between the grinding seat (11) and the connecting seat (18) and can slide up and down between the two, and the grinding seat (11) is provided with a coarseness adjustment block (19) for adjusting the relative position of the movable blade positioning seat (14) relative to the connecting seat (18) and thereby adjusting the gap between the fixed grinding blade (121) and the movable grinding blade (122).

7. The coffee bean grinder according to claim 6, characterized in that: The grinding seat (11) is provided with a guide column (112) for guiding the movable blade positioning seat (14); the coarseness adjustment block (19) comprises an adjustment ring (191) and a toggle block (192); the adjustment ring (191) is rotatably connected between the grinding seat (11) and the connecting seat (18); the outer side wall of the movable blade positioning seat (14) is provided with a stepped gear position (141); the adjustment ring (191) is provided with a push block (193) which cooperates with the gear position (141) to adjust the gap between the fixed grinding blade (121) and the movable grinding blade (122), so that when the adjustment ring (191) is rotated, the push block (193) cooperates with different positions of the gear position (141) to make the fixed grinding blade (121) and the movable grinding blade (122) be at different gaps.

8. The coffee bean grinder according to claim 6, characterized in that: The powder storage bin (13) is threadedly connected to the lower end of the connecting seat (18).

9. The coffee bean grinder according to claim 1, characterized in that: The movable knife positioning seat (14) is provided with a drop opening (1402) for the ground powder to fall into the powder storage bin (13).

10. The coffee bean grinder according to claim 1, characterized in that: The driving mechanism (2) comprises: a docking seat (21), a docking joint (22) and a power assembly (23) for driving the docking seat (21) to rotate; the upper end of the grinding seat (11) is detachably connected to the docking seat (21), and the docking joint (22) is matched and connected to the upper end of the connecting shaft (15).

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