A bean grinder

Abstract

The utility model discloses a kind of bean grinders, including fuselage and bean bin, the fuselage is arranged with grinding cavity, grinding cavity is provided with grinding device, the bean bin can be supplied coffee bean into grinding cavity by grinding device and be ground into coffee powder;The side wall of grinding cavity close to bottom is equipped with powder outlet, the powder outlet is butt joint with discharge pipe, discharge pipe forms powder outlet channel, the discharge pipe has flexible connection with powder outlet with hose section and is also equipped with paddle and enters grinding cavity through powder outlet part, the grinding cavity is also provided with powder sweeping mechanism, the powder sweeping mechanism rotates in grinding cavity and sweeps coffee powder to powder outlet, and the paddle is located in the rotation path of powder sweeping mechanism, the process of working rotation of powder sweeping mechanism will hit paddle and drive slightly vibrates of flexible connection discharge pipe, coffee powder adhered on pipe wall is vibrated and discharged, simultaneously after hitting paddle, paddle also act to clean powder outlet, effectively avoid coffee powder in powder outlet channel Accumulation problem.

Description

Technical Field

[0001] This utility model belongs to the field of coffee making equipment, specifically a coffee grinder. Background Technology

[0002] A coffee grinder is an electrical appliance that can prepare coffee powder on its own. It includes a body with a grinding chamber and a bean hopper for storing coffee beans. The grinding chamber is equipped with a grinding device for grinding coffee beans. The bean hopper can supply coffee beans to the grinding chamber, where the grinding device grinds the coffee beans into powder to form coffee powder. The coffee powder is then discharged from the powder outlet channel on the side of the grinding chamber to the outside of the machine body, where it is received by the portafilter and then loaded into the coffee machine to start preparing coffee.

[0003] Because coffee powder has the adhesive properties that powdery substances should have, the container gets covered with coffee powder in the grinding chamber and the inner wall of the dispensing channel. The grinding chamber has a dust-sweeping mechanism to sweep the coffee powder, but the dispensing channel does not have a similar mechanism. Therefore, coffee powder is very easy to accumulate in the dispensing channel. Once the coffee powder accumulates, it is difficult to remove because it contains oils and sticks firmly to the inner wall of the dispensing channel. In addition, it causes more loss of coffee powder in the preparation process. Summary of the Invention

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a coffee grinder.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A coffee grinder includes a body and a bean hopper. A grinding chamber is arranged inside the body, and a grinding device is installed inside the grinding chamber. The bean hopper allows coffee beans to enter the grinding chamber and be ground into coffee powder by the grinding device. A powder outlet is provided on the side wall near the bottom of the grinding chamber. The powder outlet is connected to a discharge pipe. The discharge pipe has a flexible hose section that is flexibly connected to the powder outlet and also has a paddle that enters the grinding chamber through the powder outlet. A powder sweeping mechanism is also provided inside the grinding chamber. The powder sweeping mechanism rotates within the grinding chamber to sweep the coffee powder toward the powder outlet, and the paddle is located in the rotation path of the powder sweeping mechanism.

[0007] The discharge pipe includes a guide pipe and a connecting soft rubber, the connecting soft rubber being sleeved on the outside of the guide pipe and forming the flexible hose segment.

[0008] The paddle is integrally formed from the connecting soft rubber and is attached to the top of the inner wall of the connecting soft rubber.

[0009] The connecting soft rubber and the conductive tube are fixed together as one piece through a rubber-coating injection molding process.

[0010] The conductive tube is made of stainless steel and has an antistatic coating sprayed on its inner wall.

[0011] The lower wall of the powder outlet slopes outward and downward.

[0012] The discharge pipe section is inclined downwards to form an inclined section, and the lower wall of the inclined section is flush with the lower wall of the powder outlet.

[0013] The machine body is also equipped with a motor that drives the grinding device, and the powder sweeping mechanism is also driven by the motor and is coaxially arranged with the grinding device.

[0014] The grinding device includes a grinding head and a grinding sleeve that cooperates with the grinding head. The grinding sleeve is fixed in the grinding chamber and receives coffee beans provided by the bean hopper at its upper part. The grinding head is located in the grinding sleeve. The motor is connected to a motor drive shaft that passes through the bottom wall of the grinding chamber and is connected to the grinding head for transmission. The powder sweeping mechanism is connected to the motor drive shaft for transmission.

[0015] The powder-sweeping mechanism includes a transmission sleeve and a powder-scraping ring. The transmission sleeve is sleeved on the motor drive shaft and clamped between the motor drive shaft and the grinding head to realize the transmission connection between the motor drive shaft and the grinding head. The powder-scraping ring is fixed on the outer periphery of the transmission sleeve and extends laterally to form a powder-scraping arm. The powder-scraping arm is arranged close to the bottom wall and side wall of the grinding chamber. The paddle is located on the rotational travel trajectory of the powder-scraping arm.

[0016] The beneficial effects of this utility model are as follows: This utility model forms a powder outlet channel by a discharge pipe that flexibly connects with the powder outlet of the grinding chamber. The discharge pipe is also equipped with a paddle that enters the grinding chamber through the powder outlet and interferes with the powder sweeping mechanism. During the working rotation of the powder sweeping mechanism, it will strike the paddle, causing the flexibly connected discharge pipe to vibrate slightly, shaking off the coffee powder attached to the pipe wall and discharging it. At the same time, after striking the paddle, the paddle will also move to clean the powder outlet, effectively avoiding the problem of coffee powder accumulation in the powder outlet channel. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a breakdown diagram of the present invention;

[0020] Figure 3 This is a cross-sectional view of the present invention;

[0021] Figure 4 yes Figure 3 Enlarged view of point A in the image;

[0022] Figure 5 This is a schematic diagram of the material discharge pipe of this utility model. Detailed Implementation

[0023] Reference Figures 1 to 5 A coffee grinder includes a body 1 and a bean hopper 2. A grinding chamber 3 is arranged inside the body 1, and a grinding device 4 is installed inside the grinding chamber 3. A motor 7 is also installed inside the body to drive the grinding device 4. The grinding device 4 includes a grinding head 41 and a grinding sleeve 42 that cooperates with the grinding head 41. The grinding sleeve 42 is fixed in the grinding chamber 3 and receives coffee beans supplied by the bean hopper 2 at its upper part. The grinding head 41 is located in the grinding sleeve 42. The motor 7 is connected to a motor drive shaft 71 that passes through the bottom wall of the grinding chamber 3 and is connected to the grinding head 41 for transmission. Coffee beans are supplied from the bean hopper 2 into the grinding chamber 3, where the grinding head 41 drives the coffee beans to grind into coffee powder against the inner wall of the grinding sleeve 42. A powder outlet 31 is provided on the side wall near the bottom of the grinding chamber 3. The powder outlet 31 is connected to a discharge pipe 6, which forms a powder outlet channel for discharging coffee powder from the body 1. The grinding chamber 3 is also equipped with a powder sweeping mechanism 5, which is also driven by the motor 7 and rotates coaxially with the grinding device 4. The powder sweeping mechanism 5 rotates in the grinding chamber 3 to sweep coffee powder toward the powder outlet 31. The discharge pipe 6 has a flexible hose section that is flexibly connected to the powder outlet 31 and is also equipped with a paddle 63 that enters the grinding chamber 3 through the powder outlet 31. The paddle 63 is located in the rotation path of the powder sweeping mechanism 5. When the powder sweeping mechanism 5 passes the powder outlet 31, the paddle 63 interferes with the powder sweeping mechanism 5, causing the powder sweeping mechanism 5 to strike the paddle 63 during its working rotation, causing the flexibly connected discharge pipe 6 to vibrate slightly, shaking off the coffee powder attached to the pipe wall and discharging it. At the same time, after striking the paddle 63, the paddle 63 will also move to clean the powder outlet 31, effectively avoiding the problem of coffee powder accumulation in the powder outlet channel.

[0024] As a preferred embodiment of this utility model, the discharge pipe 6 includes a guide pipe 61 and a connecting soft rubber 62. The connecting soft rubber 62 is sleeved on the outside of the guide pipe 61 and forms the flexible tube segment. The connecting soft rubber 62 can be made of silicone, which has stable support and sufficient flexibility and elasticity, making it easier for the discharge pipe 6 to vibrate after the paddle 63 is struck. Preferably, the paddle 63 is integrally formed by the connecting soft rubber 62, that is, the paddle 63 can also be made of silicone. The paddle 63 is connected to the top of the inner wall of the connecting soft rubber 62 and extends into the grinding chamber 3 through the powder outlet 31. The guide pipe 61 is made of stainless steel and has an antistatic coating sprayed on its inner wall. The connecting soft rubber 62 is fixed to the guide pipe 61 by a rubber injection molding process, which not only has good sealing performance but also simplifies the assembly process. In order to allow the coffee powder to be discharged more smoothly, the lower wall of the powder outlet 31 is inclined outward and downward, and the discharge pipe 6 is inclined downward to form an inclined section. The lower wall of the inclined section is flush with the lower wall of the powder outlet 31, so that when the powder sweeping mechanism 5 sweeps the coffee powder toward the powder outlet 31, it can fall quickly and be discharged from the machine body 1 under the guidance of the downward inclined surface.

[0025] As a preferred embodiment, the powder sweeping mechanism 5 includes a transmission sleeve 51 and a powder scraping ring 52. The transmission sleeve 51 is sleeved on the motor transmission shaft 71 and clamped between the motor transmission shaft 71 and the grinding head 41, thereby realizing the transmission connection between the motor transmission shaft 71 and the grinding head 41. Specifically, the transmission sleeve 51 is provided with a locking post that can be inserted into a locking hole at the bottom of the grinding head 41. The inner side of the transmission sleeve 51 is a shaped hole, and the motor transmission shaft 71 is a shaped post that engages with the shaped hole. The motor transmission shaft 71 drives the transmission sleeve 51 to rotate and simultaneously drives the grinding head 41 to rotate. The scraper ring 52 is fixed to the outer periphery of the transmission sleeve 51 and rotates together with the transmission sleeve 51. The scraper ring 52 extends laterally to form a scraper arm 53, and multiple scraper arms 53 are arranged circumferentially. In this embodiment, three scraper arms 53 are arranged. Each scraper arm 53 is arranged close to the bottom wall and side wall of the grinding chamber 3 so that the scraper mechanism can scrape all the coffee powder in the grinding chamber 3 toward the outlet 31 for discharge. The paddle 63 is located on the rotational travel trajectory of the scraper arm 53. Each scraper arm 53 will strike the paddle 63 to make the discharge pipe 6 vibrate and shake off the coffee powder multiple times.

Claims

1. A coffee grinder, comprising a body (1) and a bean hopper (2), wherein a grinding chamber (3) is arranged inside the body (1), a grinding device (4) is provided inside the grinding chamber (3), and the bean hopper (2) allows coffee beans to enter the grinding chamber (3) and be ground into coffee powder by the grinding device (4); characterized in that: The grinding chamber (3) has a powder outlet (31) on the side wall near the bottom. The powder outlet (31) is connected to a discharge pipe (6). The discharge pipe (6) has a flexible hose section that is flexibly connected to the powder outlet (31) and also has a paddle (63) that enters the grinding chamber (3) through the powder outlet (31). The grinding chamber (3) is also equipped with a powder sweeping mechanism (5). The powder sweeping mechanism (5) rotates in the grinding chamber (3) to sweep coffee powder toward the powder outlet (31), and the paddle (63) is located in the rotation path of the powder sweeping mechanism (5).

2. The coffee grinder according to claim 1, characterized in that: The discharge pipe (6) includes a guide pipe (61) and a connecting soft rubber (62), the connecting soft rubber (62) being sleeved on the outside of the guide pipe (61) and forming the hose segment.

3. The coffee grinder according to claim 2, characterized in that: The paddle (63) is integrally formed from the connecting soft rubber (62), and the paddle (63) is connected to the top of the inner wall of the connecting soft rubber (62).

4. The coffee grinder according to claim 2, characterized in that: The connecting soft rubber (62) and the conductive tube (61) are fixed together by a rubber-coating injection molding process.

5. The coffee grinder according to claim 2 or 4, characterized in that: The conductive tube (61) is made of stainless steel and has an antistatic coating sprayed on its inner wall.

6. The coffee grinder according to claim 1, characterized in that: The lower wall of the powder outlet (31) slopes outward and downward.

7. The coffee grinder according to claim 6, characterized in that: The discharge pipe (6) is inclined downward to form an inclined section, and the lower wall of the inclined section is flush with the lower wall of the powder outlet (31).

8. The coffee grinder according to claim 1, characterized in that: The machine body is also equipped with a motor (7) that drives the grinding device (4) to work. The powder sweeping mechanism (5) is also driven by the motor (7) and is coaxially arranged with the grinding device (4).

9. The coffee grinder according to claim 8, characterized in that: The grinding device (4) includes a grinding head (41) and a grinding sleeve (42) that cooperates with the grinding head (41). The grinding sleeve (42) is fixed in the grinding chamber (3) and receives coffee beans provided by the bean hopper (2) at its upper part. The grinding head (41) is located in the grinding sleeve (42). The motor (7) is connected to a motor drive shaft (71) that passes through the bottom wall of the grinding chamber (3) and is connected to the grinding head (41) in a transmission connection. The powder sweeping mechanism (5) is connected to the motor drive shaft (71) in a transmission connection.

10. The coffee grinder according to claim 9, characterized in that: The powder sweeping mechanism (5) includes a transmission sleeve (51) and a powder scraping ring (52). The transmission sleeve (51) is sleeved on the motor transmission shaft (71) and sandwiched between the motor transmission shaft (71) and the grinding head (41) to realize the transmission connection between the motor transmission shaft (71) and the grinding head (41). The powder scraping ring (52) is fixed on the outer periphery of the transmission sleeve (51) and the powder scraping ring (52) extends laterally to form a powder scraping arm (53). The powder scraping arm (53) is arranged close to the bottom wall and side wall of the grinding chamber (3). The paddle (63) is located on the rotational travel trajectory of the powder scraping arm (53).

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