Bean grinder not easy to block powder

Abstract

The utility model aims to provide a bean grinder not easy to block powder, which comprises a motor and a bean grinding main body, the motor is used for providing power required by bean grinding, the bean grinding main body is provided with a power box, the power box is provided with a helical gear transmission group matched with the motor, the helical gear transmission group is provided with a powder stirring frame for stirring powder, and the powder stirring frame is provided with a powder feeding device. The powder discharging device has the advantages that the bevel gears are used in cooperation for transmission, the powder stirring frame is matched for stirring to discharge powder, ground powder directly falls into the powder storage bin, the powder is stirred through the powder stirring frame to be rapidly discharged from the powder outlet, the powder discharging structure is novel and simple, the powder discharging stroke is short, powder clamping is not prone to occurring, and the powder discharging efficiency is improved. The problem of powder blockage caused by an overlong powder channel is solved, forced lubrication between gears can be achieved through the bevel angle design of the bevel gears, vibration and noise generated in the working process are reduced, efficient transmission between the multiple bevel gears is achieved under driving of the motor, and then the grinding piece is driven to conduct efficient grinding on coffee beans.

Description

Technical Field

[0001] The utility model belongs to the technical field of household appliances, and in particular relates to a coffee bean grinder which is not prone to powder blockage. Background Art

[0002] A bean grinder is a supporting equipment for processing coffee beans. Coffee is a beverage made from roasted and ground coffee beans. When preparing coffee, a bean grinder can be used to quickly grind the coffee beans into powder, and then brew the coffee. With the continuous development of science and technology, people have higher and higher requirements for the manufacturing process of bean grinders. When grinding coffee, existing bean grinders usually drive the grinding head to grind the coffee beans through a motor-driven gear set. The ground coffee powder will flow out through the powder outlet channel, and the powder outlet channel is a certain distance away. When the coffee powder enters the powder outlet channel, it cannot flow out in time. When the subsequently ground coffee powder enters the powder outlet channel, the previous coffee powder has not flowed out yet, which will cause the powder outlet channel to be blocked, causing the problem of powder jamming in the bean grinder. Summary of the invention

[0003] To achieve the above-mentioned purpose, the specific technical scheme of the utility model is: a coffee bean grinder that is not easy to be blocked by powder, comprising a motor for providing power required for grinding beans and a coffee bean grinder body, the coffee bean grinder body is provided with a power box, the power box is provided with a helical gear transmission group cooperating with the motor, the helical gear transmission group is provided with a powder stirring rack for stirring the powder, the helical gear transmission group is driven by the motor to make the powder stirring rack rotate to stir the powder, an upper bracket is provided on the power box, and a powder storage bin and a powder outlet are provided on the upper bracket, and the powder in the powder storage bin can flow out through the powder outlet by stirring the powder stirring rack.

[0004] According to the above technical solution, the helical gear transmission group is further provided with a grinding part, which is located just above the powder storage bin, so that the powder ground by the grinding part can directly fall into the powder storage bin and then flow out from the powder outlet.

[0005] According to the above technical solution, a slope is further arranged on the powder outlet, and the powder shifting rack shifts the powder falling into the powder storage bin into the slope while the grinding unit is grinding the beans.

[0006] Further according to the above technical solution, the power box includes an upper bracket, a lower bracket is installed on the upper bracket, the motor is installed at the bottom of the lower bracket, a transmission shaft is installed between the upper bracket and the lower bracket, the powder rack is installed on the transmission shaft, a powder rack sealing ring for sealing the powder rack is provided on the upper bracket, a driving shaft is provided on the motor, the helical gear transmission group includes a first helical gear, a central shaft is provided on the power box, the first helical gear is installed on the central shaft, and the first helical gear is meshed with the driving shaft of the motor, a second helical gear is installed on the central shaft, and a third helical gear meshed with the second helical gear is installed on the transmission shaft. When the driving motor is working, the driving shaft of the motor drives the first helical gear and the second helical gear to rotate, so that the third helical gear drives the transmission shaft to rotate, driving the grinding part to grind the beans, and the diameter of the second helical gear is smaller than the diameters of the third helical gear and the first helical gear.

[0007] According to the above technical solution, the grinding part further includes an inner adjustment frame, which is arranged on the upper bracket, and an outer adjustment frame which can be adjusted up and down is threadedly installed on the inner adjustment frame, and an adjustment frame sealing ring is arranged between the inner adjustment frame and the outer adjustment frame, and a bean bin for storing coffee beans is arranged on the inner adjustment frame, and a bean bin cover is installed on the bean bin, and a detachable and cleanable grinding piece is assembled on the inner adjustment frame, and an inner grinding core is detachably connected to the transmission shaft, and the inner grinding core and the grinding piece are used in combination, and a gap is left between the inner grinding core and the grinding piece, and the inner grinding core is driven to rotate by the transmission shaft to grind the coffee beans that fall between the inner grinding core and the grinding piece.

[0008] According to the above technical solution, the powder paddle rack is further provided with a protrusion extending upward, and the inner grinding core is provided with a groove matched with the protrusion. When the protrusion is inserted into the groove, the powder paddle rack can drive the inner grinding core to rotate to perform the grinding operation. The inner grinding core is provided with a plurality of guide grooves for guiding the powder. The powder can be guided into the powder storage bin through the guide grooves and then flow out through the stirring of the powder paddle rack.

[0009] According to the above technical scheme, further, the grinding piece includes an outer grinding core fixing frame, which is arranged on the outer grinding core and the bottom of which is in contact with the inner adjustment frame, so as to fix the outer grinding core. A protrusion is extended on the outer grinding core fixing frame, and a pull ring is installed on the protrusion. By pulling the pull ring upward, the grinding piece can be pulled out from the inner adjustment frame, so as to facilitate cleaning of the outer grinding core. Limiting ribs are arranged on the inner adjustment frame, and a clamping strip is arranged on the outer grinding core fixing frame. When the outer grinding core fixing frame is rotated to make the clamping strip rotate into the limiting rib, the grinding piece can be fixed. A fixing frame sealing ring is arranged on the inner adjustment frame, so as to seal between the inner adjustment frame and the outer grinding core.

[0010] According to the above technical solution, a fixing nut is further installed on the transmission shaft to press and fix the inner grinding core, which can prevent the inner grinding core from falling off the transmission shaft, and the transmission shaft is detachably installed with a baffle to prevent beans from jumping, and the fixing nut presses the baffle.

[0011] According to the above technical solution, a bean silo sealing silicone is further placed on the outer grinding core fixing frame, and a positioning groove matched with the protrusion is opened on the bean silo sealing silicone, so that the bean silo sealing silicone is installed in cooperation with the outer grinding core fixing frame through the protrusion and the positioning groove, and a boss extends from the bean silo sealing silicone, and a positioning cavity for accommodating the boss is formed between the inner adjustment frame and the outer grinding core fixing frame, thereby improving the stability of the placement of the bean silo sealing silicone.

[0012] According to the above technical solution, small flat washers are installed on the central shaft and between the first bevel gear and the second bevel gear, and on the transmission shaft and between the third bevel gear and the lower sleeve of the transmission shaft. Large flat washers are installed on the transmission shaft and between the upper sleeve of the transmission shaft and the third bevel gear, and between the upper sleeve of the transmission shaft and the powder paddle rack. The friction between the various parts and the noise during the operation can be reduced. Central sleeves are arranged at both ends of the central shaft, an upper sleeve of the transmission shaft and a lower sleeve of the transmission shaft are arranged on the transmission shaft, and two square structures are arranged on the transmission shaft, one of which cooperates with the powder paddle rack, and the other cooperates with the third bevel gear.

[0013] Compared with the prior art, the utility model has the following beneficial effects: by adopting a plurality of bevel gears for transmission, and cooperating with the powder paddle rack to paddle the powder, the ground powder can directly fall into the powder storage bin, and the powder can be quickly discharged from the powder outlet by the paddle rack. The powder discharging structure is novel and simple, the powder discharging stroke is short and powder is not easily stuck, and the problem of powder blockage caused by an excessively long powder channel is solved. The bevel design of the bevel gears can force lubrication between the gears, reducing vibration and noise generated during the working process. Under the drive of the motor, efficient transmission between the plurality of bevel gears is achieved, thereby driving the grinding element to grind the coffee beans efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 This is a reference schematic diagram of the overall structural state of an embodiment of the present utility model.

[0016] Figure 2 This is a reference schematic diagram of the cross-sectional structural state of an embodiment of the present utility model.

[0017] Figure 3 This is a reference schematic diagram of the powder discharging structure state of an embodiment of the utility model.

[0018] Figure 4 This is a reference schematic diagram of the powder storage bin structure state of an embodiment of the utility model.

[0019] Figure 5 This is a reference schematic diagram of the guide groove structure state of an embodiment of the utility model.

[0020] Figure 6 A reference schematic diagram of the grinding member structure state of the embodiment of the utility model

[0021] Figure 7 This is a reference schematic diagram of the structural state of the helical gear transmission group according to an embodiment of the present utility model.

[0022] Explanation of the markings in the figure: 1. Bean grinding body; 2. Bevel gear transmission group; 3. Inner adjustment frame; 4. Outer adjustment frame; 5. Upper bracket; 6. Center shaft sleeve; 7. Grinding part; 8. Lower bracket; 9. Center shaft; 10. Motor; 11. Fixing nut; 12. Baffle; 13. Silicone seal for bean bin; 14. Sealing ring for adjustment frame; 15. External grinding core fixing frame; 16. Sealing ring for fixing frame; 17. External grinding core; 18. Large flat gasket; 1 9. Inner grinding core; 20. Powder rack; 21. First bevel gear; 22. Upper sleeve of transmission shaft; 23. Transmission shaft; 24. Lower sleeve of transmission shaft; 25. Second bevel gear; 26. Third bevel gear; 27. Powder rack sealing ring; 28. Bean bin; 29. ​​Bean bin cover; 30. Small flat gasket; 31. Grinding part; 32. Pull ring; 33. Limiting rib; 34. Card strip; 35. Guide groove; 36. Powder storage bin; 37. Powder outlet. DETAILED DESCRIPTION

[0023] The embodiments of the present disclosure are described in detail below in conjunction with the accompanying drawings. The implementation methods of the present disclosure are explained below through specific examples. Those skilled in the art can easily understand other advantages and effects of the present disclosure from the contents disclosed in this specification, which are further explained below in conjunction with the accompanying drawings.

[0024] See also Figure 1-7 It can be seen that the embodiment of the utility model is a coffee bean grinder that is not easy to be blocked by powder, including a motor 10 for providing power required for grinding beans and a coffee bean grinding body 1 assembled with the motor 10 for use in the coffee bean grinding operation, the coffee bean grinding body 1 is provided with a helical gear transmission group 2 that can be assembled with the motor 10 for use to transmit power, the helical gear transmission group 2 is equipped with a grinding part 7 for grinding beans, the motor 10 drives the helical gear transmission group 2 to transmit power, and the grinding part 7 can grind beans with high efficiency.

[0025] It is worth mentioning that during the meshing process of the helical gears, each tooth is gradually involved in the meshing, and no large vibration is generated, so the noise is low, ensuring the smooth operation. The bevel design of the helical gears leads to forced lubrication between the gears, reducing the vibration and noise generated during the working process.

[0026] Further, a power box is provided on the bean grinding body 1, and the power box includes an upper bracket 5, a powder storage bin 36 and a powder outlet 37 are provided on the upper bracket 5, a lower bracket 8 is installed on the upper bracket 5, and a motor 10 is installed at the bottom of the lower bracket 8. A central shaft 9 is rotatably provided between the upper bracket 5 and the lower bracket 8, and central shaft sleeves 6 are provided at both ends of the central shaft 9. The helical gear transmission group 2 includes a first helical gear 21, and the first helical gear 21 and the second helical gear 25 are sequentially installed on the central shaft 9 from bottom to top. A driving shaft meshing with the first helical gear 21 is provided on the motor 10. When the driving shaft is driven, the first helical gear 21 is driven by the motor 10. When the motor 10 is working, the first bevel gear 21 can be driven to rotate by the driving shaft of the motor 10, and the second bevel gear 25 can be driven to rotate synchronously by the central shaft 9. A transmission shaft 23 is rotatably provided on the upper bracket 5 and the lower bracket 8. An upper shaft sleeve 22 and a lower shaft sleeve 24 are provided on the transmission shaft 23. A third bevel gear 26 meshing with the second bevel gear 25 is installed on the transmission shaft 23. The grinding part 7 is connected to the transmission shaft 23, so that the third bevel gear 26 drives the transmission shaft 23 to rotate under the drive of the second bevel gear 25, so that the grinding part 7 performs the bean grinding operation.

[0027] Furthermore, the grinding part 7 includes an inner adjustment frame 3, which is arranged on the upper bracket 5, and an outer adjustment frame 4 which can be adjusted up and down is threadedly installed on the inner adjustment frame 3, and an adjustment frame sealing ring 14 is arranged between the inner adjustment frame 3 and the outer adjustment frame 4, and a detachable and cleanable grinding piece 31 is assembled on the inner adjustment frame 3, and an inner grinding core 19 is detachably connected to the transmission shaft 23, and the inner grinding core 19 and the grinding piece 31 are used in conjunction with each other, and a gap is left between the inner grinding core 19 and the grinding piece 31, and the inner grinding core 19 is driven to rotate by the transmission shaft 23 to grind the coffee beans falling between the inner grinding core 19 and the grinding piece 31.

[0028] Furthermore, a powder plucking frame 20 for plucking the powder and limiting the inner grinding core 19 is detachably mounted on the transmission shaft 23, so that the powder plucking frame 20 drives the inner grinding core 19 to rotate under the drive of the transmission shaft 23 to perform the left grinding operation, and a powder plucking frame sealing ring 27 for sealing the powder plucking frame 20 is provided on the upper bracket 5, and a gap is left between the powder plucking frame 20 and the upper bracket 5, and an upwardly extending protrusion is provided on the powder plucking frame 20, and a groove matching the protrusion is opened on the inner grinding core 19, and when the protrusion is inserted into the groove, the powder plucking frame 20 can drive the inner grinding core 19 to rotate.

[0029] Furthermore, the grinding member 31 includes an outer grinding core fixing frame 15, which is arranged on the outer grinding core 17 and has its bottom in contact with the inner adjustment frame 3, so as to fix the outer grinding core 17. A protrusion is extended from the outer grinding core fixing frame 15, and a pull ring 32 is installed on the protrusion. By pulling the pull ring 32 upward, the grinding member 31 can be pulled out from the inner adjustment frame 3, so as to facilitate cleaning of the outer grinding core 17. A limiting rib 33 is arranged on the inner adjustment frame 3, and a clamping strip 34 is arranged on the outer grinding core fixing frame 15. When the outer grinding core fixing frame 15 is rotated to make the clamping strip 34 rotate into the limiting rib 33, the grinding member 31 can be fixed. A fixing frame sealing ring 16 is arranged on the inner adjustment frame 3, so as to seal between the inner adjustment frame 3 and the outer grinding core 17.

[0030] Furthermore, a fixing nut 11 is installed on the transmission shaft 23 to press and fix the inner grinding core 19, which can prevent the inner grinding core 19 from falling off the transmission shaft 23, and the transmission shaft 23 is detachably installed with a baffle 12 to prevent beans from jumping, and the fixing nut 11 presses the baffle 12.

[0031] Furthermore, a plurality of guide grooves 35 for guiding the powder are provided on the inner grinding core 19 . The powder can be guided into the powder storage bin 36 through the guide grooves 35 , and then flow out through the powder outlet 37 through the movement of the powder stirring frame 20 .

[0032] Furthermore, a bean silo sealing silicone 13 is placed on the outer grinding core fixing frame 15, and a positioning groove matched with the protrusion is opened on the bean silo sealing silicone 13, so that the bean silo sealing silicone 13 is installed in cooperation with the outer grinding core fixing frame 15 through the protrusion and the positioning groove, and a boss extends from the bean silo sealing silicone 13, and a positioning cavity for accommodating the boss is formed between the inner adjustment frame 3 and the outer grinding core fixing frame 15, thereby improving the stability of the placement of the bean silo sealing silicone 13.

[0033] Furthermore, a bean bin 28 for storing coffee beans is provided on the inner adjustment frame 3, and a bean bin cover 29 is installed on the bean bin 28.

[0034] Furthermore, two sections of square structures are provided on the transmission shaft 23 , one section cooperates with the powder rack 20 , and the other section cooperates with the third bevel gear 26 .

[0035] Furthermore, a small flat gasket 30 is installed on the central shaft 9 and between the first bevel gear 21 and the second bevel gear 25, and on the transmission shaft 23 and between the third bevel gear 26 and the lower sleeve 24 of the transmission shaft. A large flat gasket 18 is installed on the transmission shaft 23 and between the upper sleeve 22 of the transmission shaft and the third bevel gear 26, and between the upper sleeve 22 of the transmission shaft and the powder rack 20, which can reduce the friction between the various parts and the noise during the operation.

[0036] In summary, the above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present disclosure should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A coffee bean grinder that is not prone to coffee bean clogging, comprising a motor (10) for providing power required for coffee bean grinding and a coffee bean grinding body (1), characterized in that: The bean grinding body (1) is provided with a power box, the power box is provided with a helical gear transmission group (2) matched with the motor (10), the helical gear transmission group (2) is provided with a powder stirring frame (20) for stirring powder, the motor (10) drives the helical gear transmission group (2) to make the powder stirring frame (20) rotate to stir powder, the power box is provided with an upper bracket (5), and the upper bracket (5) is provided with a powder storage bin (36) and a powder outlet (37), and the powder in the powder storage bin (36) can flow out through the powder outlet (37) by stirring the powder stirring frame (20).

2. The coffee bean grinder that is not prone to clogging according to claim 1, characterized in that: The helical gear transmission group (2) is provided with a grinding section (7), which is located directly above the powder storage bin (36), so that powder ground by the grinding section (7) can directly fall into the powder storage bin (36) and then flow out from the powder outlet (37).

3. The coffee bean grinder that is not prone to clogging according to claim 1, characterized in that: The powder outlet (37) is provided with a slope, and while the grinding unit (7) is grinding beans, the powder moving rack (20) moves the powder that has fallen into the powder storage bin (36) into the slope.

4. The coffee bean grinder that is not prone to clogging according to claim 1, characterized in that: The power box comprises an upper bracket (5), a lower bracket (8) is mounted on the upper bracket (5), a motor (10) is mounted at the bottom of the lower bracket (8), a transmission shaft (23) is mounted between the upper bracket (5) and the lower bracket (8), the powder rack (20) is mounted on the transmission shaft (23), a powder rack sealing ring (27) for sealing the powder rack (20) is provided on the upper bracket (5), a drive shaft is provided on the motor (10), the helical gear transmission group (2) comprises a first helical gear (21), a central shaft (9) is provided on the power box, and the first helical gear (21) is mounted on the central shaft (9 ), and the first bevel gear (21) is meshed with the driving shaft of the motor (10); a second bevel gear (25) is mounted on the central shaft (9); a third bevel gear (26) meshed with the second bevel gear (25) is mounted on the transmission shaft (23); when the driving motor (10) is working, the driving shaft of the motor (10) drives the first bevel gear (21) and the second bevel gear (25) to rotate, thereby causing the third bevel gear (26) to drive the transmission shaft (23) to rotate, thereby driving the grinding part (7) to grind beans; the diameter of the second bevel gear (25) is smaller than the diameters of the third bevel gear (26) and the first bevel gear (21).

5. The coffee bean grinder that is not prone to clogging according to claim 4, characterized in that: The grinding part (7) comprises an inner adjustment frame (3), the inner adjustment frame (3) being arranged on an upper bracket (5), an outer adjustment frame (4) being threadedly mounted on the inner adjustment frame (3) and being adjustable up and down, an adjustment frame sealing ring (14) being arranged between the inner adjustment frame (3) and the outer adjustment frame (4), a bean bin (28) for storing coffee beans being arranged on the inner adjustment frame (3), a bean bin cover (29) being mounted on the bean bin (28), a detachable and cleanable grinding piece (31) being mounted on the inner adjustment frame (3), an inner grinding core (19) being detachably connected to the transmission shaft (23), the inner grinding core (19) and the grinding piece (31) being used in cooperation with each other, and a gap being left between the inner grinding core (19) and the grinding piece (31), and the coffee beans falling between the inner grinding core (19) and the grinding piece (31) being ground by driving the inner grinding core (19) to rotate through the transmission shaft (23).

6. The coffee bean grinder that is not prone to clogging according to claim 5, characterized in that: The powder plucking frame (20) is provided with a protrusion extending upward, and the inner grinding core (19) is provided with a groove matching the protrusion. When the protrusion is inserted into the groove, the powder plucking frame (20) can drive the inner grinding core (19) to rotate to perform a bean grinding operation. The inner grinding core (19) is provided with a plurality of guide grooves (35) for guiding powder. The powder can be guided into a powder storage bin (36) through the guide grooves (35) and then flow out through the movement of the powder plucking frame (20).

7. The coffee bean grinder that is not prone to clogging according to claim 5, characterized in that: The grinding member (31) comprises an outer grinding core fixing frame (15), the outer grinding core fixing frame (15) being arranged on the outer grinding core (17) and having a bottom portion in contact with the inner adjustment frame (3) so as to fix the outer grinding core (17); a protrusion extending from the outer grinding core fixing frame (15) and a pull ring (32) being mounted on the protrusion; the grinding member (31) can be pulled out of the inner adjustment frame (3) by pulling the pull ring (32) upwards, so as to facilitate cleaning of the outer grinding core (17); a limiting rib (33) being arranged on the inner adjustment frame (3); a clamping strip (34) being arranged on the outer grinding core fixing frame (15); when the outer grinding core fixing frame (15) is rotated so that the clamping strip (34) rotates into the limiting rib (33), the grinding member (31) can be fixed; and a fixing frame sealing ring (16) is arranged on the inner adjustment frame (3) so as to seal between the inner adjustment frame (3) and the outer grinding core (17).

8. The coffee bean grinder that is not prone to clogging according to claim 4, characterized in that: The transmission shaft (23) is provided with a fixing nut (11) for pressing and fixing the inner grinding core (19) to prevent the inner grinding core (19) from falling off the transmission shaft (23), and the transmission shaft (23) is detachably provided with a baffle (12) for preventing beans from jumping, and the fixing nut (11) presses the baffle (12).

9. The coffee bean grinder that is not prone to clogging according to claim 7, characterized in that: A bean bin sealing silicone (13) is placed on the outer grinding core fixing frame (15), and a positioning groove matching the protrusion is provided on the bean bin sealing silicone (13), so that the bean bin sealing silicone (13) is installed in cooperation with the outer grinding core fixing frame (15) through the protrusion and the positioning groove, and a boss extends from the bean bin sealing silicone (13), and a positioning cavity capable of accommodating the boss is formed between the inner adjustment frame (3) and the outer grinding core fixing frame (15), thereby improving the stability of the placement of the bean bin sealing silicone (13).

10. The coffee bean grinder that is not prone to clogging according to claim 5, characterized in that: A small flat washer (30) is installed on the central shaft (9) and between the first bevel gear (21) and the second bevel gear (25), and on the transmission shaft (23) and between the third bevel gear (26) and the lower shaft sleeve (24) of the transmission shaft. A large flat washer (18) is installed on the transmission shaft (23) and between the upper shaft sleeve (22) of the transmission shaft and the third bevel gear (26), and between the upper shaft sleeve (22) of the transmission shaft and the powder-pumping frame (20). The friction between the various parts and the noise during the operation can be reduced. The central shaft (9) is provided with a central shaft sleeve (6) at both ends, and the transmission shaft (23) is provided with an upper shaft sleeve (22) of the transmission shaft and a lower shaft sleeve (24). The transmission shaft (23) is provided with two sections of square structures, one section of which cooperates with the powder-pumping frame (20), and the other section of which cooperates with the third bevel gear (26).

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