Spiral reamer structure of bean grinder

Abstract

The utility model relates to the technical field of bean grinders, in particular to a spiral reamer structure of a bean grinder, which comprises a flat cutterhead component, a primary grinding component, a secondary grinding component and a spiral reamer component, and is characterized in that the flat cutterhead component comprises a lower cutterhead and an upper cutterhead; the primary grinding assembly comprises a hollow inner tooth cutter head arranged on the upper cutter head and a reamer grinding core vertically arranged on the lower cutter head, the reamer grinding core penetrates through the upper cutter head and the inner tooth cutter head and is connected with a transmission rod of the hand-cranking bean grinder, and a plurality of inner cutting edges are arranged on the inner side wall of the inner tooth cutter head; an outer cutting edge is arranged on the outer side wall of the part, located in the internal tooth cutter head, of the reamer grinding core; according to the coffee bean grinder, the transmission rod drives the reamer grinding core to rotate, then the spiral cutting edge, located in the inner tooth cutter disc, of the outer side wall of the reamer grinding core is matched with the inner cutting edge to conduct primary grinding on coffee beans and cut the coffee beans into small pieces, then the coffee beans slide into the position between the upper cutter disc and the lower cutter disc to be subjected to secondary accurate grinding, and the grinding efficiency is improved; and the operation of people is smoother and labor-saving.

Description

Technical Field

[0001] The utility model relates to the technical field of a hand-cranked coffee bean grinder, in particular to a spiral reamer structure of a coffee bean grinder. Background Art

[0002] With the gradual improvement of the national economy and the quality of life, people's demand for daily diet has shifted from a single satiety to a diversified and balanced nutrition. Coffee is also very popular for its unique aroma and taste and its refreshing effect. It is made by roasting, grinding and soaking coffee beans. The grinding process uses a hand-cranked grinder or an automatic grinder to grind the coffee beans into coffee powder through the internal blade. The hand-cranked grinder is small in size and does not require a power supply. The grinding speed and strength can be adjusted according to personal taste preferences and brewing methods to affect the uniformity and coarseness of the ground particles, making it suitable for home use and outdoor travel.

[0003] The operation of a hand-cranked grinder relies on human power, and a flat blade disc uses two parallel blade discs, which means that the contact area between the coffee beans and the blades is relatively large. When grinding coffee beans with a larger volume or lower water content and a harder texture, beans are prone to getting stuck during the grinding process, and a greater force is required to overcome the higher grinding resistance, making the existing flat blade disc unsuitable for hand-cranked grinders. Therefore, most existing hand-cranked grinders use a more labor-saving conical blade disc structure.

[0004] However, the flat blade grinder can adjust the distance between the two blades more accurately, can adapt to different grinding requirements, and is easier to grind coffee powder with finer particle size. There is an urgent need for a tool structure based on a flat blade that saves effort and does not jam beans. Utility Model Content

[0005] In order to solve the problems in the prior art, the utility model provides a spiral reamer structure for a coffee bean grinder to solve the problems raised in the above background technology.

[0006] The utility model adopts the following scheme to solve the technical problem: a spiral reamer structure of a bean grinder, comprising a flat blade disc assembly, wherein the flat blade disc assembly comprises a lower blade disc and an upper blade disc, a primary grinding assembly for primary grinding of coffee beans is further arranged above the flat blade disc assembly, the primary grinding assembly comprises a hollow inner-toothed blade disc arranged on the upper blade disc and a reamer grinding core vertically arranged on the lower blade disc, the reamer grinding core penetrates the upper blade disc and the inner-toothed blade disc and is connected to a transmission rod of a hand-cranked bean grinder, a plurality of inner blades are arranged on the inner side wall of the inner-toothed blade disc, an outer blade is arranged on the outer side wall of the reamer grinding core located in the inner-toothed blade disc, and a first slope inclined toward the reamer grinding core is arranged on the top of the inner-toothed blade disc and the inner blade.

[0007] By adopting the above technical solution and adding a primary grinding component, the coffee beans are first crushed by the reamer grinding core and the inner tooth cutter disc, and then slide into the upper cutter disc and the lower cutter disc for secondary fine grinding, which can avoid the coffee beans from getting stuck or accumulating during the grinding process, and ensure the continuity and stability of the grinding process; and the primary grinding component can easily chop larger and harder coffee beans, and the flat cutter disc can easily grind the initially chopped coffee beans into fine-grained coffee powder, saving time and effort. The inclined first slope can guide the coffee beans to flow along the preset path to ensure that the coffee beans can be smoothly ground and transitioned, avoiding the problem of bean accumulation or stagnation.

[0008] Furthermore, the outer blade is a spiral blade in a spiral shape.

[0009] By adopting the above technical solution, the design of the spiral blade can cooperate with the rotation of the transmission rod, so that the reamer grinding core can have a stronger cutting and crushing effect on the coffee beans during the grinding process, thereby improving efficiency; the spiral blade can form a spiral channel to guide the coffee beans to enter the grinding area continuously and orderly, avoiding the phenomenon of beans getting stuck.

[0010] Furthermore, the inner tooth cutter disc is cylindrical, and a plurality of cutter grooves are arranged on the inner wall of the inner tooth cutter disc. The left and right side walls of each cutter groove are inclined, and the outer edge of the side wall between adjacent cutter grooves forms an inner blade in the shape of a triangular prism.

[0011] By adopting the above technical solution, the inclined design of the side walls on both sides of each blade groove can ensure that the coffee beans can be ground continuously and evenly during rotational grinding. The triangular prism-shaped inner blade structure is conducive to guiding the flow of coffee beans, reducing the problem of coffee bean jamming caused by coffee bean accumulation.

[0012] Furthermore, a second slope inclined downward and inward is provided at the bottom of the knife groove.

[0013] By adopting the above technical solution, the second slope gradually intersects with the outer edge of the inner blade at the bottom of the inner tooth cutter disc, better guiding and discharging the initially ground coffee powder particles, avoiding accumulation inside the cutter groove, ensuring unobstructed continuous grinding, reducing bean jamming and improving grinding efficiency.

[0014] Furthermore, a spike portion is provided on the top of the spiral blade.

[0015] By adopting the above technical solution, the penetration and crushing ability of the whole coffee beans are enhanced, and the cutting efficiency is improved.

[0016] Furthermore, the reamer grinding core is coaxially mounted with the internal tooth cutter disc.

[0017] By adopting the above technical solution, the coffee beans can be evenly stressed and cut accurately during the initial grinding stage; and the wear of components caused by eccentric movement can be avoided.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. The utility model adds a preliminary grinding component to the flat blade disc, and the reamer grinding core cooperates with the inner-tooth blade disc to initially crush the coffee beans entering the grinder, and then the flat blade disc performs fine grinding, which significantly reduces the possibility of coffee beans getting stuck or piled up, and saves time and effort.

[0020] 2. The utility model uses a spiral blade on the reamer grinding core to form a spiral channel, tilts the inner blade of the inner tooth cutter disc and adds a first slope and a second slope to guide the coffee beans and avoid the phenomenon of beans being stuck.

[0021] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following specifically cites a preferred embodiment and describes it in detail with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the overall structure of this embodiment;

[0023] Figure 2 It is a structural explosion diagram of this embodiment;

[0024] Figure 3 Schematic diagram of the internal tooth cutter disc of this embodiment;

[0025] Figure 4 A top view of the internal tooth cutter disc of this embodiment;

[0026] Figure 5 Schematic diagram of the reamer grinding core of this embodiment.

[0027] In the figure: 1. flat cutter disc assembly; 11. lower cutter disc; 12. upper cutter disc; 2. primary grinding assembly; 21. inner tooth cutter disc; 211. inner blade; 22. reamer grinding core; 221. spiral blade; 3. cutter groove; 4. first slope surface; 5. second slope surface; 6. transmission rod; 7. spike portion. DETAILED DESCRIPTION

[0028] In order to make the content of the utility model more clearly understood, the utility model is further described below based on specific embodiments in combination with the accompanying drawings.

[0029] It should be noted that the terms "center", "upper", "lower", "front", "back", "left", "right", "top", "inner", "outer" and the like used herein to indicate positions or positional relationships are based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. Unless otherwise specified, "plurality" means two or more.

[0030] Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood by specific circumstances.

[0031] like Figures 1 to 5 As shown, a spiral reamer structure of a coffee bean grinder can solve the disadvantage of a flat blade disc that is laborious to jam coffee beans; it comprises a flat blade disc assembly 1, which comprises a lower blade disc 11 and an upper blade disc 12, wherein a primary grinding assembly 2 for primary grinding of coffee beans is further arranged above the flat blade disc assembly 1 of this embodiment, and the primary grinding assembly 2 comprises a hollow inner-toothed blade disc 21 arranged on the upper blade disc 12 and a reamer grinding core 22 vertically arranged on the lower blade disc 11, the reamer grinding core 22 penetrates the upper blade disc 12 and the inner-toothed blade disc 21 and is connected to the transmission rod 6 of the hand-cranked coffee bean grinder, and a plurality of inner blades 211 are arranged on the inner side wall of the inner-toothed blade disc 21, and an outer blade is arranged on the outer side wall of the reamer grinding core 22 located in the inner-toothed blade disc 21.

[0032] In this embodiment, by adding a primary grinding component 2, the reamer grinding core 22 and the inner-toothed cutter disc 21 are first used to perform preliminary crushing on the coffee beans, and then the coffee beans are slid between the upper cutter disc 12 and the lower cutter disc 11 for secondary fine grinding, which can avoid the coffee beans from getting stuck or piling up during the grinding process, thereby ensuring the continuity and stability of the grinding process; and the primary grinding component 2 can easily shred larger and harder coffee beans, and the flat cutter disc only needs to grind the preliminarily chopped coffee beans into ideal fine-grained coffee powder, thereby significantly improving the grinding efficiency and reducing the effort required during operation, saving time and effort.

[0033] like Figure 5As shown, the outer blade of the reamer grinding core 22 of this embodiment is designed as a spiral blade 221 in a spiral shape. The spiral structure is combined with the rotational movement of the transmission rod 6, so that the reamer grinding core 22 has a stronger cutting and crushing effect on the coffee beans during the grinding process, which is more conducive to improving the grinding speed and efficiency compared with the flat blade; the spiral blade 221 can form a spiral channel to guide the coffee beans to enter the grinding area continuously and orderly, and effectively disperse the pressure, reduce the possibility of beans piling up or getting stuck, and thus ensure a smoother grinding process.

[0034] like Figure 1 and Figure 3 As shown, the inner tooth blade disc 21 of this embodiment is cylindrical, and a plurality of blade grooves 3 are arranged on the inner side wall of the inner tooth blade disc 21, and the left and right side walls of each blade groove 3 are inclined, and the outer edge of the side wall between adjacent blade grooves 3 forms an inner blade 211 in the shape of a triangular prism. The inclined design of the side walls on both sides of each blade groove 3 can ensure that the coffee beans can be ground continuously and evenly during rotation and grinding, and the inner blade 211 in the shape of a triangular prism can quickly crush the coffee beans and can help guide the flow of the coffee beans, reducing the problem of coffee beans being stuck due to coffee bean accumulation.

[0035] like Figure 4 As shown, the top of the inner tooth cutter disc 21 and the inner blade 211 of this embodiment is provided with a first slope 4 inclined toward the reamer grinding core 22. The inclined first slope 4 can guide the coffee beans to flow along a preset path to ensure that the coffee beans can be smoothly ground and transitioned, avoiding the problem of bean accumulation or jamming; and a second slope 5 inclined downward and inward is provided at the bottom of the cutter groove 3. The second slope 5 gradually intersects with the outer edge of the inner blade 211 at the bottom of the inner tooth cutter disc 21, better guiding and discharging the coffee powder particles after the initial grinding, avoiding accumulation inside the cutter groove 3, ensuring unobstructed continuous grinding, reducing the phenomenon of bean jamming and improving grinding efficiency.

[0036] like Figure 5 As shown, the spiral blade 221 of this embodiment is provided with a spike portion 7 at the top. When the coffee beans enter the primary grinding assembly 2, the spike portion 7 first contacts and penetrates into the bean body, quickly cutting the whole coffee beans, thereby enhancing the penetration and crushing ability of the whole coffee beans and improving the cutting efficiency.

[0037] like Figure 1 and Figure 2 As shown, the reamer grinding core 22 of this embodiment is coaxially installed with the inner-tooth cutter disc 21. The coaxial installation can ensure that the reamer grinding core 22 and the inner-tooth cutter disc 21 can keep rotating synchronously during operation, so that the coffee beans are evenly stressed and cut accurately in the initial grinding stage; and the wear of components caused by eccentric motion can be avoided.

[0038] The working principle of this embodiment is as follows: this embodiment adds a preliminary grinding component 2 to the flat cutter disc, and the reamer grinding core 22 cooperates with the inner tooth cutter disc 21 to initially crush the coffee beans entering the grinder, and then the flat cutter disc performs fine grinding, which significantly reduces the possibility of coffee beans getting stuck or piled up, and saves time and effort. Then, by using a spiral blade 221 on the reamer grinding core 22 to form a spiral channel, the inner blade 211 in the inner tooth cutter disc 21 is tilted and the first slope 4 and the second slope 5 are added to guide the coffee beans to avoid the phenomenon of bean jamming. A spike portion 7 is added to the top of the spiral blade 221 to enhance the penetration and crushing ability of the complete coffee beans, effectively improving the cutting efficiency. The reamer grinding core 22 and the inner tooth cutter disc 21 are coaxially installed to prevent eccentric movement from causing component wear.

[0039] The embodiments described above are only preferred implementation modes of the present utility model and cannot be used to limit the protection scope of the present utility model. Any non-substantial changes and modifications made by technicians in this field on the basis of the utility model shall fall within the protection scope of the present utility model.

Claims

1. A spiral reamer structure for a coffee bean grinder, comprising a flat blade assembly, characterized in that: The flat blade disc assembly comprises a lower blade disc and an upper blade disc, and a primary grinding assembly for primary grinding of coffee beans is further arranged above the flat blade disc assembly, wherein the primary grinding assembly comprises a hollow inner-tooth blade disc arranged on the upper blade disc and a reamer grinding core vertically arranged on the lower blade disc, the reamer grinding core penetrates the upper blade disc and the inner-tooth blade disc and is connected to a transmission rod of a hand-cranked grinder, a plurality of inner blades are arranged on the inner side wall of the inner-tooth blade disc, an outer blade is arranged on the outer side wall of the reamer grinding core located in the inner-tooth blade disc, and a first slope surface inclined toward the reamer grinding core is arranged on the top of the inner-tooth blade disc and the inner blade.

2. The spiral reamer structure of a coffee bean grinder according to claim 1, characterized in that: The outer blade is a spiral blade in a spiral shape.

3. The spiral reamer structure of a coffee bean grinder according to claim 2, characterized in that: The inner tooth cutter disc is cylindrical, and a plurality of cutter grooves are arranged on the inner wall of the inner tooth cutter disc. The left and right side walls of each cutter groove are inclined, and the outer edge of the side wall between adjacent cutter grooves forms an inner blade in the shape of a triangular prism.

4. The spiral reamer structure of a coffee bean grinder according to claim 3, characterized in that: The bottom of the knife groove is provided with a second slope surface inclined downward and inward.

5. The spiral reamer structure of a coffee bean grinder according to claim 4, characterized in that: A spike portion is provided on the top of the spiral blade.

6. The spiral reamer structure of a coffee bean grinder according to claim 5, characterized in that: The reamer grinding core is coaxially mounted with the inner-tooth cutter disc.

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