Automatic powder ejection mechanism and coffee grinder with automatic powder ejection function

Abstract

The utility model discloses automatic pop powder mechanism and have automatic pop powder function's bean grinder, the powder outlet channel end of bean grinder is equipped with automatic pop powder mechanism, and automatic pop powder mechanism includes with the powder outlet channel intercommunication's lower powder channel, and the powder outlet channel is equipped with the elastic pressing plate between lower powder channel, and the elastic pressing plate is connected with elastic powder motor drive and can be under its action automatic impact powder outlet channel to shake off the powder that adheres on it. The utility model discloses through being equipped with the elastic pressing plate with elastic powder motor drive connection and can along Z -type to and fro movement in the powder outlet channel end of bean grinder, can in the automatic impact powder outlet channel of grinding powder operation and shake off the powder that the inner wall and end portion of it accumulated, reduce bean powder loss, keep powder path clean, avoided the problem of accumulated powder string smell caused by the powder accumulation in the powder outlet channel, keep the flavour of beans, and the pop powder mechanism simple structure can form modularization and maintain conveniently, and assembly is simple, need not manual operation, and convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of coffee grinder technology, and in particular to an automatic powder dispensing mechanism and a coffee grinder with an automatic powder dispensing function. Background Technology

[0002] During the high-speed crushing and grinding of coffee beans, the grinding mechanism inside the grinder generates significant static charge accumulation (triboelectric effect) due to the intense friction between the metal blades and the bean cellulose. This static charge transfers to the surface of the fine bean flour particles, giving them strong electrostatic adsorption properties. Consequently, a large amount of bean flour stubbornly adheres to the inner wall of the flour outlet and the surrounding metal components. This physical phenomenon not only causes some bean flour loss after each grind but also requires the user to manually clean the adhered powder, which is time-consuming and laborious. Furthermore, the residual powder that is not removed will affect the uniformity of subsequent grinds and the quality of flavor extraction.

[0003] To address this common industry problem, patent CN 219940412U discloses a coffee grinder with a powder-repelling mechanism. This mechanism uses a toggle and a reset component, where the reset component automatically resets the toggle after external force is released. During operation, the user toggles the toggle and releases it, causing it to spring back quickly and, upon resetting, strike the fixed ring at the powder outlet, generating a vibration that dislodges the adsorbed coffee powder. However, this solution has significant limitations: First, the moving parts achieve powder repellency through reciprocating toggle motion, requiring manual triggering by the user. The actual powder-repelling effect varies from person to person, and if the user forgets the repelling step, powder will remain on the mechanism, gradually affecting the quality of the coffee powder and proving difficult to remove. Second, the powder-repelling mechanism is relatively complex, inconvenient to disassemble and assemble, and cleaning residual coffee powder is time-consuming and laborious, resulting in high maintenance costs for the coffee grinder. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides an automatic powder-dispensing mechanism and a coffee grinder with automatic powder-dispensing function. By installing a spring plate at the end of the powder outlet channel of the coffee grinder, which is connected to the powder-dispensing motor and can move back and forth in the Z direction, the spring plate can automatically impact the powder outlet channel during the grinding operation, shaking off the powder accumulated on its inner wall and end, reducing coffee powder loss, keeping the powder channel clean, avoiding the problem of powder accumulation and cross-contamination caused by powder in the powder outlet channel, and maintaining the flavor of the beans. Moreover, the powder-dispensing mechanism has a simple structure, can be modularized, is easy to maintain, is simple to assemble, requires no manual operation, and is convenient to use.

[0005] To solve the above-mentioned technical problems, the first technical solution adopted by this utility model is as follows: An automatic powder-dispensing mechanism is located at the end of the powder outlet channel of the coffee grinder, which extends downwards at an angle to the outside of the grinder. The automatic powder-dispensing mechanism includes a powder-feeding channel connected to the powder outlet channel and extending in a Z-direction. A spring-loaded plate is provided between the powder-feeding channel and the powder outlet channel. The spring-loaded plate can reciprocate along the Z-direction under external force to impact the outer wall of the powder outlet channel, causing the powder adhering to it to fall into the powder-feeding channel. Wherein: The automatic powder ejection mechanism also includes a mounting plate fixed on the outer wall of the powder discharge channel. The upper end of the mounting plate is provided with an elastic element extending in the Z direction, and the upper end of the elastic element is provided with a horizontally arranged spring pressure plate. The spring pressure plate is sleeved around the end of the powder discharge channel. The spring pressure plate is connected to the reversing transmission mechanism, which is connected to the spring powder motor. The spring powder motor can drive the spring pressure plate to move back and forth along the Z direction through the reversing transmission mechanism to strike the outer wall of the powder outlet channel. Both the spring powder motor and the reversing transmission mechanism are mounted on the mounting plate.

[0006] As a further explanation of the above technical solution: In the above technical solution, the reversing transmission mechanism includes a transmission gear and a drive gear that can mesh with each other. The drive gear is vertically mounted on the mounting plate and is connected to the powder motor. The transmission gear is circumferentially arranged on the outer wall of the pressure plate and extends radially outward.

[0007] In the above technical solution, both the transmission gear and the driving gear are complete gears or incomplete gears, and the number of teeth of the incomplete gear is single or multiple.

[0008] In the above technical solution, the spring pressure plate is movably mounted on the mounting plate by two or more Z-direction extending limiting rods, and each limiting rod is provided with the elastic element between the mounting plate and the spring pressure plate.

[0009] In the above technical solution, the lower end of the mounting plate can also be detachably fixed with a bracket, and the bracket has a through hole that communicates with the powder discharge channel.

[0010] In the above technical solution, a guide ring is also provided between the bracket and the mounting plate. The upper end of the guide ring is matched and connected to the powder feeding channel, and its lower part is matched and embedded in the through hole.

[0011] The second technical solution adopted by this utility model is as follows: A coffee grinder with an automatic powder ejection function, wherein the coffee grinder is provided with a coffee hopper, a grinding mechanism and a grinding motor, the grinding mechanism is provided with a powder outlet channel, and the end of the powder outlet channel is detachably fixed with the automatic powder ejection mechanism described in the previous technical solution.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting a spring pressure plate at the end of the powder outlet channel of the grinder, which is connected to the powder-spreading motor and can move back and forth in the Z direction, the powder accumulated on the inner wall and end of the powder outlet channel can be automatically shaken off during the grinding operation, reducing the loss of bean powder, keeping the powder channel clean, avoiding the problem of powder accumulation and cross-contamination caused by powder in the powder outlet channel, and maintaining the flavor of the beans. Moreover, the powder-spreading mechanism has a simple structure, can be modularized and is easy to maintain, simple to assemble, requires no manual operation, and is convenient to use. Attached Figure Description

[0013] Figure 1 This is a front view structural diagram of this embodiment; Figure 2 This is a schematic diagram of the exploded structure of this embodiment.

[0014] The components are as follows: 10. Bean hopper; 20. Grinding mechanism; 21. Powder outlet channel; 30. Grinding motor; 40. Powder ejection mechanism; 41. Powder discharge channel; 42. Press plate; 43. Mounting plate; 44. Elastic component; 45. Reversing transmission mechanism; 46. Powder ejection motor; 47. Limiting rod; 48. Bracket; 49. Guide ring; 1. Transmission gear; 2. Drive gear; 3. Through hole. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings.

[0016] The embodiments described with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "several" or "more than" means two or more, unless otherwise explicitly specified. In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0017] like Figure 1As shown, a coffee grinder with an automatic powder ejection function includes a coffee hopper 10, a grinding mechanism 20, and a grinding motor 30. The grinding mechanism 20 has a powder outlet channel 21. The powder outlet channel 21 extends downwards at an angle to the outside of the coffee hopper 10, and its end is equipped with an automatic powder ejection mechanism 40. The automatic powder ejection mechanism 40 includes a powder discharge channel 41 that is connected to the powder outlet channel 21 and extends in the Z direction. A spring plate 42 is provided between the powder discharge channel 41 and the powder outlet channel 21. The spring plate 42 can move back and forth in the Z direction under the action of external force to impact the outer wall of the powder outlet channel 21 so that the powder adhering thereon falls into the powder discharge channel 41. The automatic powder ejection mechanism 40 includes a mounting plate 43 fixed to the outer wall of the powder discharge channel 41. The upper end of the mounting plate 43 is provided with an elastic element 44 extending in the Z direction. The upper end of the elastic element 44 is provided with a horizontally arranged spring plate 42. The spring plate 42 is sleeved around the outer periphery of the end of the powder outlet channel 21.

[0018] like Figure 2 As shown, the spring pressure plate 42 is connected to the reversing transmission mechanism 45, which is also connected to the powder-discharging motor 46. The powder-discharging motor 46 can drive the spring pressure plate 42 to reciprocate along the Z-direction via the reversing transmission mechanism 45 to strike the outer wall of the powder outlet channel 21. Both the powder-discharging motor 46 and the reversing transmission mechanism 45 are mounted on the mounting plate 43. The reversing transmission mechanism 45 includes a transmission gear 1 and a drive gear 2 that can mesh. The drive gear 2 is vertically mounted on the mounting plate 43 and is connected to the powder-discharging motor 46. The transmission gear 1 is circumferentially located on the outer wall of the spring pressure plate 42 and extends radially outward. Both the transmission gear 1 and the drive gear 2 are complete gears or incomplete gears. The number of teeth on the incomplete gear is single or multiple.

[0019] like Figure 2 As shown, in this embodiment, the spring pressure plate 42 is movably mounted on the mounting plate 43 by two or more Z-direction extending limiting rods 47. Each limiting rod 47 is provided with an elastic element 44 between the mounting plate 43 and the spring pressure plate 42. The powder-spraying motor 46 and the drive gear 2 are detachably fixed on the mounting plate 43 by positioning elements. To facilitate assembly and prevent mistake-proofing, two horizontally arranged transmission teeth 1 are symmetrically arranged in the middle of the outer wall of the annular spring pressure plate 42 along the circumferential direction. The drive gear 2 is an incomplete tooth, and two horizontally arranged tooth shapes are symmetrically arranged on its outer wall. To facilitate assembly, the end of the inclined powder outlet channel 21 forms a vertically downward bending structure and extends into the powder outlet channel 41. The spring pressure plate 42 is sleeved around it.

[0020] During operation, the grinding mechanism 20 of the coffee grinder grinds the beans in the bean hopper 10 into powder. The bean powder falls into the powder outlet channel 21. The powder-spreading motor 46 drives the vertically placed drive gear 2 to rotate. The teeth at the top of the drive gear 2 push the transmission gear 1 to drive the spring plate 42 to squeeze the elastic element 44 and move it downward along the Z-axis. When the two disengage, the elastic element 44 resets and pushes the spring plate 42 upward, impacting the outer wall of the powder outlet channel 21, shaking off the powder adhering to its inner wall into the powder outlet channel 41. In application, depending on the actual structure and applicable range of the coffee grinder, the built-in circuit can preset the synchronous start or delayed start of the powder-spreading motor 46 and the grinding motor 30.

[0021] like Figure 2 As shown, the lower end of the mounting plate 43 is also detachably fixed with a bracket 48. The bracket 48 has a through hole 3 that communicates with the powder feeding channel 41. A guide ring 49 is also provided between the bracket 48 and the mounting plate 43. The upper end of the guide ring 49 is matched and connected with the powder feeding channel 41, and its lower part is matched and embedded in the through hole 3. The bottom end of the guide ring 49 has a horn structure, which facilitates the falling and collection of powder, and also facilitates disassembly for cleaning of the guide ring 49 and the powder feeding channel 41 without disassembling the grinding mechanism 20.

[0022] This invention features a spring plate 42 at the end of the powder outlet channel 21 of a coffee grinder. This spring plate 42 is connected to the powder-spreading motor 46 and can move back and forth in the Z direction. During grinding, the spring plate 42 automatically impacts the powder outlet channel 21, shaking off the powder accumulated on its inner wall and end. This reduces coffee powder loss, keeps the powder channel clean, and avoids the problem of powder accumulating in the powder outlet channel 21, which can lead to cross-contamination of flavors. This preserves the flavor of the coffee beans. Furthermore, the powder-spreading mechanism has a simple structure, can be modularized, is easy to maintain, is simple to assemble, requires no manual operation, and is convenient to use.

[0023] The above does not limit the technical scope of this utility model. Any modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model shall still fall within the scope of the technical solution of this utility model.

Claims

1. An automatic powder dispensing mechanism, located at the end of the powder dispensing channel (21) of a coffee grinder, said powder dispensing channel (21) extending obliquely downwards to the outside of the coffee grinder; characterized in that, The automatic powder ejection mechanism (40) includes a powder discharge channel (41) that is connected to the powder outlet channel (21) and extends in the Z direction. A pressure plate (42) is provided between the powder discharge channel (41) and the powder outlet channel (21). The pressure plate (42) can move back and forth in the Z direction under the action of external force to strike the outer wall of the powder outlet channel (21) so that the powder adhering thereto falls into the powder discharge channel (41); wherein: The automatic powder ejection mechanism (40) further includes a mounting plate (43) fixed on the outer wall of the powder discharge channel (41). The upper end of the mounting plate (43) is provided with an elastic element (44) extending in the Z direction. The upper end of the elastic element (44) is provided with a horizontally arranged spring pressure plate (42). The spring pressure plate (42) is sleeved around the end of the powder discharge channel (21). The spring plate (42) is connected to the reversing transmission mechanism (45), and the reversing transmission mechanism (45) is connected to the powder motor (46). The powder motor (46) can drive the spring plate (42) to move back and forth along the Z direction through the reversing transmission mechanism (45) to strike the outer wall of the powder outlet channel (21). The powder motor (46) and the reversing transmission mechanism (45) are both mounted on the mounting plate (43).

2. The automatic powder dispensing mechanism according to claim 1, characterized in that, The reversing transmission mechanism (45) includes a transmission gear (1) and a drive gear (2) that can mesh with each other. The drive gear (2) is vertically mounted on the mounting plate (43) and is connected to the powder motor (46) for transmission. The transmission gear (1) is arranged circumferentially on the outer wall of the pressure plate (42) and extends radially outward.

3. The automatic powder dispensing mechanism according to claim 2, characterized in that, The transmission gear (1) and the driving gear (2) are both complete gears or incomplete gears, and the number of teeth of the incomplete gear is single teeth or multiple teeth.

4. The automatic powder dispensing mechanism according to claim 1, characterized in that, The spring plate (42) is movably mounted on the mounting plate (43) by two or more Z-direction extending limiting rods (47), and each limiting rod (47) is provided with the elastic element (44) between the mounting plate (43) and the spring plate (42).

5. The automatic powder dispensing mechanism according to claim 1, characterized in that, The lower end of the mounting plate (43) can also be detachably fixed with a bracket (48), and the bracket (48) has a through hole (3) that communicates with the powder discharge channel (41).

6. The automatic powder dispensing mechanism according to claim 5, characterized in that, A guide ring (49) is also provided between the bracket (48) and the mounting plate (43). The upper end of the guide ring (49) is matched and connected to the powder channel (41), and its lower part is matched and embedded in the through hole (3).

7. A coffee grinder with an automatic powder-dispensing function, characterized in that, The coffee grinder is provided with a bean hopper (10), a grinding mechanism (20) and a grinding motor (30). The grinding mechanism (20) is provided with a powder outlet channel (21). The end of the powder outlet channel (21) is detachably fixed with an automatic powder ejection mechanism (40) as described in any one of claims 1-6.

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