Flat cutter bean grinder

Abstract

The utility model belongs to the technical field of die production equipment, and particularly relates to a flat cutter bean grinder which comprises an upper cutter head assembly, a lower cutter head assembly, an adjusting rod and a driving device, the upper cutter head assembly is in threaded connection with the lower cutter head assembly, an upper flat cutter head is arranged on the upper cutter head assembly, a lower flat cutter head is arranged on the lower cutter head assembly, and the adjusting rod is connected with the driving device. The upper flat cutter disc and the lower flat cutter disc are arranged in an up-down alignment mode, the adjusting rod is rotationally installed on the lower cutter disc assembly and is in threaded connection with the outer side wall of the upper cutter disc assembly, and the driving device is installed in the lower cutter disc assembly and is in threaded connection with the outer side wall of the upper cutter disc assembly. And the rotating end of the driving device extends towards the interior of the lower cutter head assembly and drives the lower flat cutter head to rotate through worm and gear transmission, and simple assembly and adjustment of the bean grinder are achieved through the structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of mold production equipment, and particularly relates to a flat knife coffee grinder. Background Art

[0002] The coffee brewing process starting from coffee beans involves the following steps, namely, grinding the coffee beans into powder and then extracting coffee from the coffee powder by supplying a preset amount of pressurized hot water to a corresponding brewing chamber. A coffee bean grinder, especially a coffee bean grinder used in a professional environment, is a highly specialized high-performance device that needs to produce the desired amount of freshly ground coffee powder to be dispensed into a brewer as quickly as possible. A filter is then used in an actual coffee machine for the brewing process. In the prior art, the grinding gap is changed by a lift-adjustable grinding knife set to freely adjust the fineness of the coffee bean grinding, but there are technical problems with the fixed structure assembly of the coffee bean grinder in the prior art. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a flat knife coffee grinder, aiming to solve the technical problem that the structure of the coffee bean grinder in the prior art is not easy to disassemble and clean.

[0004] To achieve the above purpose, a flat knife coffee grinder provided by an embodiment of the utility model includes an upper knife disc assembly, a lower knife disc assembly, an adjusting rod, and a driving device. The upper knife disc assembly is threadedly connected to the lower knife disc assembly. An upper flat knife disc is arranged on the upper knife disc assembly, and a lower flat knife disc is arranged on the lower knife disc assembly. The upper flat knife disc and the lower flat knife disc are arranged in an upper and lower alignment. The adjusting rod is rotatably installed on the lower knife disc assembly and is threadedly connected to the outer side wall of the upper knife disc assembly. The driving device is installed in the lower knife disc assembly, and the rotating end of the driving device extends into the lower knife disc assembly to drive the lower flat knife disc to rotate through a worm and worm gear transmission.

[0005] Preferably, the upper knife disc assembly further includes a baffle, an inner knife disc frame, and an outer knife disc frame. The outer knife disc frame is threadedly connected to the lower knife disc assembly and the adjusting rod. The upper flat knife disc is fixedly installed at the bottom of the inner knife disc frame, and the upper flat knife disc and the inner knife disc frame are arranged in communication. The inner knife disc frame is installed in the outer knife disc frame, and the baffle is installed on the inner knife disc frame and is located above the through hole of the inner knife disc frame.

[0006] Preferably, a plurality of positioning protrusions are arranged on the inner side surface of the outer knife disc frame, and all the positioning protrusions are located at the same horizontal height and are mutually clamped with the outer side surface of the inner knife disc frame.

[0007] Preferably, a plurality of limiting strips are arranged at intervals on the outer side surface of the inner frame of the cutter head, and the limiting strips are located at the same horizontal height. A limiting protrusion is arranged in a closed loop at the top edge of the side surface of the inner frame of the cutter head, and a limiting groove is formed at an interval between the limiting protrusion and the limiting strip. The positioning protrusion is clamped in the limiting groove.

[0008] Preferably, a plurality of mounting posts are arranged on the top plane of the inner frame of the cutter head. The mounting posts are arranged around the through hole of the inner frame of the cutter head, and the top of each mounting post is connected to the bottom of the baffle plate.

[0009] Preferably, the lower cutter head assembly further includes a mounting seat and a fixed rubber disc. A grinding cavity and a mounting cavity are arranged on the mounting seat. The upper cutter head assembly is in threaded connection with the opening of the grinding cavity. The fixed rubber disc is rotatably mounted in the grinding cavity, and the end of the rotating shaft of the fixed rubber disc is rotatably connected to the bottom of the mounting seat. The lower flat cutter head is fixedly mounted on the fixed rubber disc. The driving device is mounted in the mounting cavity. A worm gear is arranged at the bottom of the fixed rubber disc, and a worm is arranged at the rotating end of the driving device. The worm and the worm gear are meshed and connected. A powder outlet is arranged on the side surface of the mounting seat, and the powder outlet communicates with the grinding cavity.

[0010] Preferably, a guiding protrusion and a plurality of powder scraping protrusions are arranged on the top of the fixed rubber disc. The guiding protrusion is located in the central area of the top of the fixed rubber disc, and the lower flat cutter head is arranged around the guiding protrusion. The powder scraping protrusions are arranged around the lower flat cutter head, and the powder scraping protrusions are arranged in central symmetry. Each powder scraping protrusion abuts against the inner side surface of the grinding cavity.

[0011] Preferably, a plurality of positioning parts for assembling the worm gear are arranged at the bottom of the fixed rubber disc, and each positioning part is respectively clamped with the opening on the worm gear.

[0012] Preferably, a fixed bearing is arranged at the bottom of the fixed rubber disc. The fixed bearing is mounted at the bottom of the grinding cavity, and the inner ring of the fixed bearing is connected to the bottom of the fixed rubber disc.

[0013] Preferably, a sealing ring is arranged at the bottom of the fixed rubber disc, and the sealing ring abuts against the bottom of the fixed rubber disc and the bottom surface of the grinding cavity respectively.

[0014] One or more of the above technical solutions in the flat knife coffee grinder provided by the embodiment of the present invention have at least one of the following technical effects:

[0015] The upper blade disc assembly, lower blade disc assembly, adjusting rod and driving device of the utility model, wherein the upper flat blade disc and the lower flat blade disc are fixedly mounted on the upper blade disc assembly and the lower blade disc assembly respectively, the upper flat blade disc is located at the bottom of the upper blade disc assembly, and the lower flat blade disc is installed in the lower blade disc assembly, the adjusting rod is used to adjust the relative position between the upper blade disc assembly and the lower blade disc assembly, and the driving device is used to drive the lower flat blade disc to rotate relative to the upper flat blade disc. During assembly, the upper flat blade disc is fixedly mounted on the bottom of the upper blade disc assembly, and the lower flat blade disc is installed in the lower blade disc assembly, and the upper blade disc assembly and the lower blade disc assembly are threadedly connected to each other so that the upper flat blade disc and the lower flat blade disc are arranged in an upper and lower alignment manner, and the adjusting rod is rotatably arranged on the lower blade disc assembly, and at the same time, the adjusting rod and the outer side surface of the upper blade disc assembly are threadedly connected, and the upper blade disc assembly is driven to rotate by rotating the adjusting rod, and the upper blade disc assembly is rotated according to The lines threadedly connected to the lower blade disc assembly rise or fall, thereby adjusting the distance between the upper flat blade disc and the lower flat blade disc. Driven by the driving device, the lower flat blade disc rotates relative to the upper flat blade disc, thereby grinding the coffee beans located between the upper flat blade disc and the lower flat blade disc, and adjusting the coarseness of the coffee bean grinding according to the gap between the upper and lower flat blade discs. Similarly, when disassembling, the disassembly is completed by separating the upper blade disc assembly and the lower blade disc assembly, and the upper blade disc assembly includes a blade disc inner frame and a blade disc outer frame. The blade disc inner frame is used for fixed installation of the upper flat blade disc, and the blade disc outer frame is used to connect with the lower blade disc assembly and is threadedly connected with the adjusting rod at the same time. The blade disc inner frame is sleeved in the blade disc outer frame, and the detachable assembly between the blade disc inner frame and the blade disc outer frame is achieved by rotating and clamping. Through the above-mentioned structural setting, the grinder structure combination in the present application is flexible and simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 This is a rendering of the flat blade bean grinder provided in an embodiment of the utility model.

[0018] Figure 2 This is an exploded view of the flat blade bean grinder provided in an embodiment of the utility model.

[0019] Figure 3 This is a rendering of the power connection structure of the lower blade disc assembly of the flat blade bean grinder provided in an embodiment of the utility model.

[0020] Figure 4 This is a rendering of the mounting base of the flat blade bean grinder provided in an embodiment of the utility model.

[0021] Figure 5 This is the effect diagram of the fixed rubber disc of the flat knife coffee grinder provided by the embodiment of the present utility model.

[0022] Among them, each reference numeral in the figure:

[0023] 10 - upper cutter disc assembly, 11 - upper flat cutter disc, 12 - baffle

[0024] 13 - cutter disc outer frame, 14 - cutter disc inner frame, 20 - lower cutter disc assembly

[0025] 21 - lower flat cutter disc, 22 - mounting seat, 23 - fixed rubber disc

[0026] 30 - adjusting rod, 40 - driving device, 131 - positioning protrusion

[0027] 141 - limiting strip, 142 - limiting groove, 221 - coffee grinding cavity

[0028] 222 - mounting cavity, 223 - powder outlet, 231 - guiding protrusion

[0029] 232 - powder scraping protrusion, 233 - fixed bearing, 234 - sealing ring. Detailed implementation manners

[0030] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying Figures 1 to 5 drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the embodiments of the present utility model, and should not be construed as limiting the present utility model.

[0031] In the description of the embodiments of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

[0032] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present utility model, "a plurality" means two or more unless otherwise specifically defined.

[0033] In the embodiments of the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the internal communication between two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0034] In one embodiment of the present utility model, as Figures 1 to 3 shown, a flat knife coffee grinder is provided, which includes an upper knife disc assembly 10, a lower knife disc assembly 20, an adjusting rod 30 and a driving device 40. The outer surface of the upper knife disc assembly 10 is arranged as a circular curved surface, which is convenient for the rotational installation of the upper knife disc assembly 10. The upper knife disc assembly 10 and the lower knife disc assembly 20 are threadedly connected. By rotating the upper knife disc assembly 10, the separation and combination of the upper knife disc assembly 10 and the lower knife disc assembly 20 can be realized, and accordingly, the gap between the upper flat knife disc 11 and the lower flat knife disc 21 can be indirectly adjusted. The upper flat knife disc 11 is arranged on the upper knife disc assembly 10, and the lower flat knife disc 21 is arranged on the lower knife disc assembly 20, and the upper flat knife disc 11 and the lower flat knife disc 21 are arranged in an upper and lower alignment, and both the upper flat knife disc 11 and the lower flat knife disc 21 are solidly arranged, which can effectively prevent the upper flat knife disc 11 and the lower flat knife disc 21 from being easily deformed during daily use and improve the service life of the upper flat knife disc 11 and the lower flat knife disc 21. The adjusting rod 30 is rotatably installed on the lower knife disc assembly 20, and the adjusting rod 30 is threadedly connected with the outer side wall of the upper knife disc assembly 10. A threaded member is arranged on the adjusting rod 30, and through the threaded member, the tightness of the threaded connection between the adjusting rod 30 and the outer side surface of the upper knife disc assembly 10 can be ensured, and rotation slippage can be avoided, which affects the adjustment effect of the adjusting rod 30. The driving device 40 is installed in the lower knife disc assembly 20, and the rotating end of the driving device 40 extends downward into the lower knife disc assembly 20, and the lower flat knife disc 21 is driven to rotate through a worm and worm gear transmission. The driving device 40 drives the rotation of the lower flat knife disc 21 to complete the grinding of the coffee beans located between the upper flat knife disc 11 and the lower flat knife disc 21.

[0035] The upper blade disc assembly 10, the lower blade disc assembly 20, the adjusting rod 30 and the driving device 40 in the utility model, wherein the upper flat blade disc 11 and the lower flat blade disc 21 are fixedly mounted on the upper blade disc assembly 10 and the lower blade disc assembly 20 respectively, the upper flat blade disc 11 is located at the bottom of the upper blade disc assembly 10, the lower flat blade disc 21 is installed in the lower blade disc assembly 20, the adjusting rod 30 is used to adjust the relative position between the upper blade disc assembly 10 and the lower blade disc assembly 20, the driving device 40 is used to drive the lower flat blade disc 21 to rotate relative to the upper flat blade disc 11, during assembly, the upper flat blade disc 11 is fixedly mounted on the bottom of the upper blade disc assembly 10, the lower flat blade disc 21 is installed in the lower blade disc assembly 20, the upper blade disc assembly 10 and the lower blade disc assembly 20 are threadedly connected, so that the upper flat blade disc 11 and the lower flat blade disc 21 are arranged in an up-and-down position, and the adjusting rod 30 is used to adjust the relative position between the upper blade disc assembly 10 and the lower blade disc assembly 20, and the driving device 40 is used to drive the lower flat blade disc 21 to rotate relative to the upper flat blade disc 11. 0 is rotatably arranged on the lower blade disc assembly 20, and the adjusting rod 30 is threadedly connected to the outer side surface of the upper blade disc assembly 10. The upper blade disc assembly 10 is driven to rotate by rotating the adjusting rod 30, and the upper blade disc assembly 10 rises or falls according to the lines of the threaded connection with the lower blade disc assembly 20, thereby adjusting the distance between the upper flat blade disc 11 and the lower flat blade disc 21. Under the drive of the driving device 40, the lower flat blade disc 21 rotates relative to the upper flat blade disc 11, thereby realizing the grinding of the coffee beans located between the upper flat blade disc 11 and the lower flat blade disc 21, and adjusting the coarseness of the coffee beans ground according to the gap between the upper flat blade disc 11 and the lower flat blade disc 21. Similarly, when disassembling, the disassembly is completed by separating the upper blade disc assembly 10 and the lower blade disc assembly 20. Through the above-mentioned structural arrangement, the structure combination of the grinder in the present application is flexible and simple.

[0036] In another embodiment of the present invention, Figures 1 to 2 As shown, the upper blade disc assembly 10 also includes a baffle 12, a blade disc inner frame 14 and a blade disc outer frame 13. The baffle 12 is used to block the through hole on the blade disc inner frame 14 to a certain extent. On the one hand, it improves the safety of the feed port to avoid injuries caused by fingers being inserted into it. On the other hand, it can also prevent excessive foreign objects from entering and causing damage to the grinder. The blade disc outer frame 13 is threadedly connected with the lower blade disc assembly 20 and the adjusting rod 30. The upper flat blade disc 11 is fixedly installed at the bottom of the blade disc inner frame 14, and the upper flat blade disc 11 and the blade disc inner frame 14 are arranged in communication. Coffee beans are input from the through hole of the blade disc inner frame 14 to between the upper flat blade disc 11 and the lower flat blade disc 21 for grinding. The blade disc inner frame 14 is installed in the blade disc outer frame 13, and the baffle 12 is installed on the blade disc inner frame 14, and the baffle 12 is located above the through hole of the blade disc inner frame 14. The baffle 12 and the through hole of the blade disc inner frame 14 are arranged at a certain distance to avoid injuries caused by fingers being inserted into it without affecting the entry of coffee beans.

[0037] In another embodiment of the present invention, Figure 2As shown, a number of positioning protrusions 131 are provided on the inner side surface of the cutter head outer frame 13, and each positioning protrusion 131 is at the same horizontal height. The outer side surfaces of the positioning protrusions 131 are engaged with the outer side surface of the cutter head inner frame 14. The engagement of the positioning protrusions 131 facilitates the user to disassemble and clean the connection between the cutter head outer frame 13 and the cutter head inner frame 14 by themselves.

[0038] In another embodiment of the present utility model, as Figure 2 shown, a number of limiting strips 141 are provided at intervals on the outer side surface of the cutter head inner frame 14, and each limiting strip 141 is at the same horizontal height, so that the rotation of each limiting strip 141 is on the same track. A limiting protrusion is provided in a closed loop at the top edge of the side surface of the cutter head inner frame 14 to limit the sinking limit during the assembly of the cutter head inner frame 14. A limiting groove 142 is formed at an interval between the limiting protrusion and the limiting strips 141. The positioning protrusion 131 is engaged in the limiting groove 142. By rotating the cutter head inner frame 14, the engagement position of the positioning protrusion 131 in the limiting groove 142 can be changed, so that the positioning protrusion 131 moves to a position between two adjacent limiting strips 141. Through this interval, the positioning protrusion 131 is disengaged from the horizontal position of the limiting groove 142, realizing the separation of the cutter head inner frame 14 from the cutter head outer frame 13.

[0039] In another embodiment of the present utility model, as Figures 1 to 2 shown, a number of mounting posts are provided on the top plane of the cutter head inner frame 14. Each mounting post is arranged around the through hole of the cutter head inner frame 14. The top of each mounting post is connected to the bottom of the baffle 12. The height of the mounting post accurately controls the distance between the baffle 12 and the through hole on the cutter head inner frame 14.

[0040] In another embodiment of the present utility model, as Figures 1 to 5As shown, the lower cutter head assembly 20 further includes a mounting base 22, a fixed rubber disk 23. The mounting base 22 is provided with a grinding chamber 221 and a mounting chamber 222. The upper cutter head assembly 10 is threadedly connected to the opening of the grinding chamber 221. The fixed rubber disk 23 is rotatably mounted in the grinding chamber 221. The edge of the fixed rubber disk 23 abuts against the inner wall edge of the grinding chamber 221. And the fixed rubber disk 23 is circularly arranged. The inner wall of the grinding chamber 221 also encloses a circular shape. The lower flat cutter head 21 is fixedly mounted on the fixed rubber disk 23. And the plane of the fixed rubber disk 23 is larger than that of the lower flat cutter head 21, so that a powder collecting channel is formed between the lower flat cutter head 21 and the inner wall of the grinding chamber 221 for accommodating the ground coffee powder. The driving device 40 is mounted in the mounting chamber 222. And the rotating end of the driving device 40 extends into the grinding chamber 221 and is threadedly connected to the bottom of the fixed rubber disk 23. The driving device 40 drives the fixed rubber disk 23 to rotate, moving the ground coffee powder in a fixed direction. An outlet 223 is provided on the side of the mounting base 22. The outlet 223 communicates with the grinding chamber 221. The top plane of the fixed rubber disk 23 is flush with the bottom edge of the outlet 223, which can ensure that the rotation of the fixed rubber disk 23 pushes the ground coffee beans out from the outlet 223.

[0041] In another embodiment of the present utility model, as Figures 2 to 3 and Figure 5 shown, the top of the fixed rubber disk 23 is provided with a guiding protrusion 231 and a plurality of powder scraping protrusions 232. The guiding protrusion 231 can drive the coffee beans to be ground towards the grinding ends of the upper flat cutter head 11 and the lower flat cutter head 21 during rotation. The powder scraping protrusions 232 are used to push the coffee powder to move. The guiding protrusion 231 is located in the central area of the top of the fixed rubber disk 23, precisely pushing the coffee beans towards the surroundings. And the lower flat cutter head 21 is arranged around the guiding protrusion 231. Each powder scraping protrusion 232 is arranged around the lower flat cutter head 21. And each powder scraping protrusion 232 is centrosymmetrically arranged. Each powder scraping protrusion 232 abuts against the inner side surface of the grinding chamber 221, driving the coffee powder to move under the push of the powder scraping protrusion 232 and outputting from the outlet 223.

[0042] A plurality of positioning members are provided at the bottom of the fixed rubber disk 23. The worm gear is engaged with each positioning member to complete the worm gear assembly. The worm mounted on the rotating end of the driving device 40 drives the worm gear to rotate, and then drives the fixed rubber disk 23 to rotate. The end of the rotating shaft of the fixed rubber disk 23 is rotatably connected to the bottom of the mounting base 22, ensuring the smoothness of the fixed rubber disk 23 during the rotation driven by the worm gear and preventing the situation of up and down movement. A washer is also sleeved at the end of the rotating shaft where it is rotatably connected to the bottom of the mounting base 22 to reduce the friction between the limiting member at the end of the rotating shaft and the bottom plane of the mounting base 22 during rotation.

[0043] In another embodiment of the present utility model, as Figures 2 to 3 and Figure 5As shown, the guiding protrusion 231 includes a number of obliquely arranged plates that are centrosymmetric. Their straight edges are connected to each other. By rotating along the hypotenuse, the coffee beans are pushed between the upper flat cutter disc 11 and the lower flat cutter disc 21. During the rotation of the obliquely arranged plates around the center, the coffee beans move in all directions and enter the grinding area between the upper flat cutter disc 11 and the lower flat cutter disc 21 for grinding.

[0044] In another embodiment of the present invention, as Figures 2 to 3 and Figure 5 shown, a fixed bearing 233 is provided at the bottom of the fixed rubber disc 23. The fixed bearing 233 is installed at the bottom of the grinding chamber 221, and the inner ring of the fixed bearing 233 is connected to the bottom of the fixed rubber disc 23, which improves the smoothness of the rotation process of the fixed rubber disc 23 through the fixed bearing 233.

[0045] In another embodiment of the present invention, as Figures 2 to 3 and Figure 5 shown, a sealing ring 234 is provided at the bottom of the fixed rubber disc 23. The sealing ring 234 is in contact with the bottom of the fixed rubber disc 23 and the bottom surface of the grinding chamber 221 respectively. The sealing ring 234 can be a wool ring, which separates the power connection structure of the fixed rubber disc 23 from the grinding area, avoiding the influence caused by coffee powder entering the space of the power connection structure of the fixed rubber disc 23.

[0046] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A flat blade bean grinder, characterized by: The utility model comprises an upper cutter disc assembly, a lower cutter disc assembly, an adjusting rod and a driving device, wherein the upper cutter disc assembly and the lower cutter disc assembly are threadedly connected, an upper flat cutter disc is arranged on the upper cutter disc assembly, a lower flat cutter disc is arranged on the lower cutter disc assembly, and the upper flat cutter disc and the lower flat cutter disc are arranged in vertical alignment, the adjusting rod is rotatably mounted on the lower cutter disc assembly, and the adjusting rod is threadedly connected to the outer side wall of the upper cutter disc assembly, the driving device is installed in the lower cutter disc assembly, and the rotating end of the driving device extends toward the inside of the lower cutter disc assembly, and the lower flat cutter disc is driven to rotate by a worm gear transmission.

2. The flat blade bean grinder according to claim 1, characterized in that: The upper blade disc assembly also includes a baffle, a blade disc inner frame and a blade disc outer frame. The blade disc outer frame is threadedly connected to the lower blade disc assembly and the adjusting rod. The upper flat blade disc is fixedly mounted on the bottom of the blade disc inner frame, and the upper flat blade disc and the blade disc inner frame are communicated. The blade disc inner frame is mounted in the blade disc outer frame. The baffle is mounted on the blade disc inner frame, and the baffle is located above the through hole of the blade disc inner frame.

3. The flat blade grinder according to claim 2, characterized in that: A plurality of positioning protrusions are arranged on the inner side surface of the cutter disc outer frame, and each of the positioning protrusions is located at the same horizontal height, and each of the positioning protrusions is mutually engaged with the outer side surface of the cutter disc inner frame.

4. The flat blade bean grinder according to claim 3, characterized in that: A plurality of limit bars are arranged at intervals on the outer side surface of the inner frame of the cutter disc, and each of the limit bars is located at the same horizontal height. A limit protrusion is arranged in a closed loop on the top edge of the side surface of the inner frame of the cutter disc, and a limit groove is formed between the limit protrusion and the limit bar, and the positioning protrusion is clamped in the limit groove.

5. The flat blade bean grinder according to claim 2, characterized in that: A plurality of mounting posts are arranged on the top plane of the cutter disc inner frame, each of the mounting posts is arranged around the through hole of the cutter disc inner frame, and the top of each of the mounting posts is connected to the bottom of the baffle.

6. The flat blade bean grinder according to claim 1, characterized in that: The lower cutter disc assembly also includes a mounting seat and a fixed rubber disc, the mounting seat is provided with a grinding chamber and a mounting chamber, the upper cutter disc assembly is threadedly connected to the opening of the grinding chamber, the fixed rubber disc is rotatably mounted in the grinding chamber, and the end of the rotating shaft of the fixed rubber disc is rotatably connected to the bottom of the mounting seat, the lower flat cutter disc is fixedly mounted on the fixed rubber disc, the driving device is installed in the mounting chamber, a worm gear is provided at the bottom of the fixed rubber disc, a worm is provided at the rotating end of the driving device, the worm is meshedly connected with the worm gear, a powder outlet is provided on the side of the mounting seat, and the powder outlet is connected to the grinding chamber.

7. The flat blade grinder according to claim 6, characterized in that: A guide protrusion and a plurality of powder scraping protrusions are arranged on the top of the fixed rubber disc, the guide protrusion is located in the central area of ​​the top of the fixed rubber disc, and the lower flat knife disc is arranged around the guide protrusion, and each of the powder scraping protrusions is arranged around the lower flat knife disc, and each of the powder scraping protrusions is arranged symmetrically with the center, and each of the powder scraping protrusions abuts against the inner side surface of the grinding chamber.

8. The flat-blade bean grinder according to claim 6, characterized in that: A plurality of positioning pieces for assembling the worm gear are arranged at the bottom of the fixed rubber disc, and each of the positioning pieces is respectively engaged with an opening on the worm gear.

9. The flat-blade bean grinder according to claim 6, characterized in that: A fixed bearing is provided at the bottom of the fixed rubber disc. The fixed bearing is installed at the bottom of the bean grinding chamber, and the inner ring of the fixed bearing is connected to the bottom of the fixed rubber disc.

10. The flat-blade bean grinder according to claim 6, characterized in that: A sealing ring is arranged at the bottom of the fixed rubber disc, and the sealing ring abuts against the bottom of the fixed rubber disc and the bottom surface of the bean grinding chamber respectively.

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