A bean grinder

Abstract

The utility model discloses a kind of bean grinders, including organism (1), bean storehouse (2), grinding device (3), valve assembly (4) and gear adjusting assembly (5), it is characterized by: valve assembly (4) includes fixed ring (41), is connected in the bottom of bean storehouse (2) by connecting shaft (411);Rotary ring (42) can be circumferentially limited in organism (1);Mounting ring (43) has the waist round hole (431) for connecting shaft (411) to pass, rotary ring (42) and mounting ring (43) have second convex point (422) and third convex point (433);And multiple valve plate (44), rotationally connected outside corresponding connecting shaft (411), and have the limiting post (441) that can be rotatably inserted in the limiting groove (432) of rotary ring (42). Compared with prior art, the utility model can realize lock bean function and grinding powder gear adjusting function by rotating bean storehouse, and both do not interfere with each other.

Description

Technical Field

[0001] This utility model relates to the field of kitchen equipment technology, specifically to a coffee grinder. Background Technology

[0002] A coffee grinder is a grinding tool that cuts and grinds coffee beans into coffee powder by a motor driving mechanical blades to rotate at high speed. Coffee grinding is usually carried out inside the grinding chamber.

[0003] Existing coffee grinders can usually adjust the coarseness of the grind as needed to meet the needs of different coffee flavors. Using a coffee grinder can ensure the freshness and quality of coffee powder, thereby making more delicious coffee. For example, Chinese patent application number CN202420181713.1, "A Coffee Grinder for Grinding Coffee Powder", controls the up and down movement of the bean hopper by rotating it, thereby driving the first blade at the lower end of the bean hopper to move up and down, adjusting the gap between the first blade and the second blade, thereby achieving the adjustment of the coarseness of the coffee powder.

[0004] In addition, some coffee grinders also have a bean locking function to facilitate the control of coffee bean feeding. For example, Chinese patent application number CN202211616924.5, "A Coffee Machine Bean Compartment with Rotating Blade Device", sets up a rotating blade as a valve. By rotating the lower cover of the bean compartment, the lower cover fixing screw drives the rotating blade to move clockwise or counterclockwise along the limiting groove to realize the opening and closing of the rotating blade.

[0005] However, since the actions of adjusting the valve opening and closing by rotating the bean hopper and adjusting the grinding speed by rotating the bean hopper do not occur simultaneously, if the two methods are simply combined, the opening and closing state of the valve will change while the bean hopper is rotating to adjust the grinding speed, thus causing interference between the two.

[0006] The current conventional solution is to use two independent adjustment rings to accomplish the two different actions mentioned above. However, this solution has a complex structure and increases the difficulty of operation for users, resulting in a poor user experience. Utility Model Content

[0007] The technical problem to be solved by this utility model is to provide a coffee grinder that can achieve both the function of locking coffee beans and the function of adjusting the grinding speed by rotating the bean hopper, without the two interfering with each other, in light of the current state of the technology.

[0008] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a coffee grinder, including...

[0009] The machine body has a grinding chamber inside;

[0010] The bean hopper is rotatably mounted on the top of the machine body, has a bean storage chamber inside, and a material discharge port at the bottom for connecting the grinding chamber and the bean storage chamber;

[0011] A grinding device, disposed within the grinding chamber, includes a first cutter disc and a second cutter disc;

[0012] A valve assembly, installed at the bottom of the bean hopper, is used to open and close the discharge port; and

[0013] The gear adjustment component acts between the bean hopper and the second cutter disc to convert the rotational motion of the bean hopper into the lifting motion of the second cutter disc, thereby adjusting the gap between the second cutter disc and the first cutter disc.

[0014] Its characteristic is that: the valve assembly includes...

[0015] A fixing ring is connected to the bottom of the bean bin by multiple connecting shafts arranged circumferentially therebetween, and there is a sandwich between the fixing ring and the bean bin.

[0016] A rotating ring is rotatably installed within the interlayer and circumferentially confined within the body of the machine.

[0017] A mounting ring, rotatably mounted within the interlayer, has multiple circumferentially extending oblong holes corresponding to the connecting shafts and multiple limiting grooves corresponding to the oblong holes. Each connecting shaft is slidably inserted into its corresponding oblong hole. The rotating ring and the mounting ring each have corresponding second and third protrusions.

[0018] Multiple valve plates are arranged at intervals along the circumference of the mounting ring in the interlayer and correspond to the connecting shaft. Each valve plate is rotatably connected to the outer periphery of the corresponding connecting shaft and has a limiting post that can be rotatably inserted into the corresponding limiting groove.

[0019] During the rotation of the soybean hopper:

[0020] With the second protrusion positioned in front of the rotation direction of the third protrusion, the mounting ring remains stationary relative to the machine body, so that all the valve plates can rotate around the corresponding connecting shaft during the revolution of the connecting shaft to block or release the blockage of the material discharge port.

[0021] When the second protrusion is not located in front of the rotation direction of the third protrusion, the mounting ring can rotate synchronously with the bean hopper, so that all the valve plates can remain stationary relative to the bean hopper during the revolution with the corresponding connecting shaft.

[0022] In order to prevent the connecting shaft from forcibly driving the mounting ring to rotate synchronously due to the constraint relationship between the connecting shaft and the oblong hole during the opening and closing of the valve assembly, each of the connecting shafts is located at the first end of the corresponding oblong hole when the valve assembly is closed.

[0023] With the valve assembly fully open, each of the connecting shafts is located at the second end of the corresponding oblong hole.

[0024] To facilitate the positioning of the rotating ring in its initial state and its free rotation during gear adjustment, the rotating ring also has a second positioning groove and a clearance groove located on both sides of the second protrusion, and the clearance groove extends along the circumference of the rotating ring.

[0025] In the initial state, the third protrusion is inserted into the second positioning groove;

[0026] During gear adjustment, the third protrusion can be slidably inserted into the clearance groove.

[0027] To facilitate the indication of the grinding level, the outer peripheral wall at the bottom of the bean hopper is provided with scale lines arranged circumferentially, and the outer peripheral wall at the top of the machine body is provided with vertically extending indicator lines, which can cooperate with the scale lines to indicate the grinding level.

[0028] To ensure the accuracy of the initial scale position, when the third protrusion has just entered the clearance groove after passing the second protrusion and disengaging from the second positioning groove, the indicator line points to the initial scale position of the scale line.

[0029] The reason for this design is that during the process of the grinder going from its initial state to entering the speed adjustment process, the valve assembly will go through a process of closing and then fully opening. During this process, the rotation of the bean hopper will cause the second blade to rise and fall. Therefore, the speed in the initial state needs to be set to a negative value to avoid deviation in the initial scale of the grinding speed.

[0030] To prevent the rotating ring and the bean hopper from rotating relative to each other during the gear adjustment process, which could cause a deviation in the grinding gear, the rotating ring is sandwiched between the fixed ring and the bean hopper.

[0031] During gear adjustment, the rotating ring can rotate synchronously with the bean hopper under the action of friction.

[0032] The reason for this design is that without friction, during gear adjustment, the only way to make the connecting shaft drive the mounting ring to rotate synchronously is by utilizing the constraint relationship between the connecting shaft and the oblong hole. This will not cause any problems during forward rotation, but during rotation, the connecting shaft needs to be moved to the other side of the oblong hole to drive the mounting ring to rotate synchronously, which will lead to deviations in the grinding gear.

[0033] In order to facilitate the removal of the rotating ring from the machine body while circumferentially limiting the rotating ring within the machine body, the inner wall of the machine body is provided with multiple arc-shaped flanges arranged at intervals along its circumference. There is a limiting channel between the adjacent ends of two adjacent arc-shaped flanges. The outer peripheral wall of the rotating ring is provided with multiple second limiting protrusions corresponding to the limiting channels. Each of the second limiting protrusions can be inserted into the corresponding limiting channel.

[0034] To facilitate the placement and removal of the bean hopper at the top of the machine body, the outer peripheral wall of the fixing ring is provided with a plurality of first limiting protrusions corresponding to the second limiting protrusion;

[0035] In the initial state, the valve assembly is in the closed state, and the first limiting protrusion can enter and exit the body through the corresponding limiting channel;

[0036] In all states other than the initial state, the first limiting protrusion is located below the corresponding arcuate flange.

[0037] To facilitate the valve assembly to be reset to its initial state, at least one of the second limiting protrusions and the corresponding first limiting protrusions have corresponding first protrusions and first positioning grooves on their opposite surfaces;

[0038] In the initial state, the first protrusion is inserted into the first positioning groove;

[0039] In states other than the initial state, the first protrusion disengages from the first positioning groove.

[0040] In order to convert the rotational motion of the bean hopper into the lifting motion of the second cutter disc, the grinding device further includes a first cutter disc seat fixed relative to the machine body, a second cutter disc seat that can be movably mounted on the top of the first cutter disc seat, and a driving component for driving the first cutter disc to rotate. The first cutter disc is rotatably mounted on the first cutter disc seat, and the second cutter disc is mounted on the second cutter disc seat.

[0041] The gear adjustment component includes:

[0042] The adjustment knob can be circumferentially limited to the bottom of the fixing ring; and

[0043] A threaded sleeve is installed at the bottom of the adjusting knob and threadedly connected to the outer periphery of the second cutter head seat.

[0044] Compared with the prior art, the advantages of this utility model are as follows: The valve assembly is composed of a fixed ring, a rotating ring, a mounting ring, and a valve plate. Utilizing the cooperation between the second protrusion on the rotating ring and the third protrusion on the mounting ring, the rotation of the bean hopper mainly involves two situations:

[0045] With the second convex point positioned in front of the rotation direction of the third convex point, the mounting ring remains stationary relative to the machine body, so that all valve plates can rotate around the corresponding connecting shaft during the revolution of the connecting shaft to block or release the blockage of the material discharge port, thus realizing the bean locking function.

[0046] When the second protrusion is not located in front of the rotation direction of the third protrusion, the mounting ring can rotate synchronously with the bean hopper so that all valve plates can remain stationary relative to the bean hopper during the revolution with the corresponding connecting shaft. This can achieve the grinding gear adjustment function while avoiding the rotation of the valve plates.

[0047] The above solution can achieve both bean locking and grinding speed adjustment functions through rotating the bean hopper, and the two functions do not interfere with each other. The structure is simple and ingenious, and the user experience is good. Attached Figure Description

[0048] Figure 1 This is a three-dimensional structural diagram of an embodiment of the coffee grinder of this utility model in its initial state;

[0049] Figure 2 for Figure 1 A three-dimensional structural diagram omitting the soybean bin;

[0050] Figure 3 for Figure 1 A three-dimensional structural diagram of the soybean bin and valve assembly;

[0051] Figure 4 for Figure 3 A three-dimensional exploded view;

[0052] Figure 5 for Figure 1 A longitudinal sectional view;

[0053] Figure 6 for Figure 1 A 3D structural diagram of a medium-sized coffee grinder after the valve assembly is fully open;

[0054] Figure 7 for Figure 6 A three-dimensional structural diagram omitting the soybean bin;

[0055] Figure 8 for Figure 6 A longitudinal sectional view;

[0056] Figure 9 for Figure 6 A three-dimensional structural diagram of a medium-sized coffee grinder after the third protrusion has just entered the clearance groove;

[0057] Figure 10 for Figure 9 A three-dimensional structural diagram omitting the soybean bin;

[0058] Figure 11 for Figure 9 A 3D structural diagram of a medium-sized coffee grinder during the speed adjustment process;

[0059] Figure 12 for Figure 11 A three-dimensional structural diagram omitting the soybean bin;

[0060] Figure 13 for Figure 9 A 3D structural diagram of a medium-sized coffee grinder after the valve assembly is closed;

[0061] Figure 14 for Figure 13 A three-dimensional structural diagram omitting the bean silo. Detailed Implementation

[0062] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0063] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of this utility model. However, the use of these terms is merely for the purpose of explanation and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this utility model can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0064] like Figures 1 to 14 The image shows a preferred embodiment of the coffee grinder of this invention. The coffee grinder includes a body 1, a coffee hopper 2, a grinding device 3, a valve assembly 4, and a speed adjustment assembly 5.

[0065] The machine body 1 has a grinding chamber 10 inside and an open top; two arc-shaped flanges 11 are provided on the inner wall of the top of the machine body 1, which are arranged circumferentially, and a limiting channel 111 is provided between the adjacent ends of the two adjacent arc-shaped flanges 11; and a vertically extending indicator line 12 is provided on the outer peripheral wall of the top of the machine body 1.

[0066] The bean hopper 2 is rotatably mounted on the top of the machine body 1. Specifically, the bean hopper 2 has a bean storage chamber 20 inside; the bottom of the bean hopper 2 has a material discharge port 21 for connecting the grinding chamber 10 and the bean storage chamber 20; the outer peripheral wall of the bottom of the bean hopper 2 is provided with scale lines 22 arranged circumferentially thereon, and the aforementioned indicator lines 12 can cooperate with the scale lines 22 to indicate the grinding level.

[0067] The grinding device 3 is disposed in the grinding chamber 10 and includes a first cutter head seat 31, a second cutter head seat 32, a first cutter head 33, a second cutter head 34, and a driving component 35. Specifically, the first cutter head seat 31 is installed in the grinding chamber 10; the second cutter head seat 32 is movably mounted on top of the first cutter head seat 31; the first cutter head 33 is rotatably mounted on top of the first cutter head seat 31; the second cutter head 34 is mounted on the second cutter head seat 32; the driving component 35 is a motor and is installed at the bottom of the first cutter head seat 31, and its power output shaft is drivenly connected to the first cutter head 33 to drive the first cutter head 33 to rotate relative to the second cutter head 34 for grinding.

[0068] Valve assembly 4 is installed at the bottom of bean hopper 2 and is used to open and close the aforementioned discharge port 21. In this embodiment, valve assembly 4 includes a fixed ring 41, a rotating ring 42, a mounting ring 43, and a valve plate 44.

[0069] Specifically, the fixing ring 41 is connected to the bottom of the bean hopper 2 by five connecting shafts 411 arranged circumferentially, and there is a sandwich 410 between the fixing ring 41 and the bean hopper 2; two first limiting protrusions 412 corresponding to the aforementioned limiting channels 111 are provided on the outer peripheral wall of the fixing ring 41; the bottom of the fixing ring 41 has a limiting ring 413, and the bottom end of the limiting ring 413 has three limiting notches 4131 arranged circumferentially; in this embodiment, the aforementioned connecting shafts 441 are studs;

[0070] The rotating ring 42 is rotatably installed in the aforementioned interlayer 410, sandwiched between the fixed ring 41 and the bean hopper 2, with the periphery of the rotating ring 42 exposed outside the interlayer 410; two second limiting protrusions 421 corresponding to the aforementioned first limiting protrusion 412 are provided on the outer peripheral wall of the rotating ring 42, and each second limiting protrusion 421 can be inserted into the corresponding limiting channel 111, thereby achieving circumferential limiting within the body 1. In this embodiment, one of the second limiting protrusions 421 and the corresponding first limiting protrusion 412 have corresponding first protrusions 4211 and first positioning grooves 4121 on their opposite surfaces; the inner peripheral wall of the rotating ring 42 is provided with first protrusions 422, and second positioning grooves 423 and clearance grooves 424 located on both sides of the second protrusions 422 are provided on its inner peripheral wall, with the clearance grooves 424 extending circumferentially along the rotating ring 42;

[0071] The mounting ring 43 is rotatably mounted in the interlayer 410 and sandwiched between the fixing ring 41 and the bean hopper 2. The mounting ring 43 has five oblong holes 431 that extend circumferentially along the connecting shaft 411 and five limiting grooves 432 that correspond to and are spaced apart from the oblong holes 431. Each connecting shaft 411 can slide through the corresponding oblong hole 431. The periphery of the mounting ring 43 has an upwardly extending extension arm, and the outer side wall of the extension arm has a third protrusion 433 that corresponds to the second protrusion 422.

[0072] There are five valve plates 44, which are arranged at intervals along the circumference of the mounting ring 43 in the interlayer 410 and correspond one-to-one with the connecting shaft 411 and the limiting groove 432. Each valve plate 44 is rotatably connected to the outer periphery of the corresponding connecting shaft 411, and a limiting post 441 that can be rotatably inserted into the corresponding limiting groove 432 is provided on the bottom surface of the tail of each valve plate 44. In this embodiment, the connecting shaft 411 is located in the middle of the valve plate 44 near the tail, so that a small relative rotation angle between the fixing ring 41 and the mounting ring 42 can achieve a large angle of self-rotation of the valve plate 44.

[0073] The gear adjustment component 5 operates between the bean hopper 2 and the second cutter disc 34, converting the rotational motion of the bean hopper 2 into the lifting motion of the second cutter disc 34. In this embodiment, the gear adjustment component 5 includes an adjustment knob 51 and a screw sleeve 52. Specifically, the top of the adjustment knob 51 has three limiting ribs 511 corresponding to the aforementioned limiting notches 4131. Each limiting rib 511 can be inserted into the corresponding limiting notch 4131, thereby achieving circumferential limiting of the adjustment knob 51 at the bottom of the fixing ring 41. The screw sleeve 52 is installed at the bottom of the adjustment knob 51 and threadedly connected to the outer periphery of the second cutter disc seat 32. Rotating the bean hopper 2 can drive the adjustment knob 51 to rotate synchronously through the fixing ring 41. Since the screw sleeve 52 is threadedly connected to the outer periphery of the second cutter disc seat 32, the screw sleeve 52 will drive the second cutter disc seat 32 to move up and down relative to the first cutter disc seat 31 during the rotation of the adjustment knob 51, thereby adjusting the gap between the second cutter disc 34 and the first cutter disc 33, and thus achieving the adjustment of the grinding fineness.

[0074] Due to the cooperation of the second protrusion 422 and the third protrusion 433, there are two main situations during the rotation of the bean hopper 2:

[0075] With the second protrusion 422 positioned in front of the rotation direction of the third protrusion 433, the mounting ring 43 remains stationary relative to the machine body 1 due to the constraint relationship between the mounting ring 43 and the rotating ring 42. At the same time, the bean hopper 2 can drive the fixed ring 41 to rotate relative to the movable ring 42, and then drive each valve plate 44 to revolve around the axis of the bean hopper 2 through the connecting shaft 411. Due to the constraint relationship between the limiting post 441 of the valve plate 44 and the limiting groove 432 of the mounting ring 43, all valve plates 44 will rotate around the corresponding connecting shaft 411 during the revolution of the bean hopper 2, thereby blocking or releasing the blocking of the discharge port 21.

[0076] With the second protrusion 422 not positioned in front of the rotation direction of the third protrusion 433, since there is no longer a constraint relationship between the mounting ring 43 and the rotating ring 42, the mounting ring 43 can rotate synchronously with the bean hopper 2 under the action of friction. At the same time, the bean hopper 2 can drive the fixed ring 41 to rotate relative to the movable ring 42, and then drive each valve plate 44 to revolve around the axis of the bean hopper 2 through the connecting shaft 411. In this way, all valve plates 44 will remain stationary relative to the mounting ring 43 and the bean hopper 2 during the process of revolving with the bean hopper 2.

[0077] The working principle of this embodiment is as follows:

[0078] (1) When grinding beans is required:

[0079] First, rotate the rotating ring 42 until the first protrusion 4211 of the second limiting protrusion 421 is inserted into the first positioning groove 4121 of the first limiting protrusion 412 and the third protrusion 433 is inserted into the second positioning groove 423. Then, align the first limiting protrusion 412 of the fixing ring 41 with the corresponding limiting channel 111 and insert it into the machine body 1 until the second limiting protrusion 421 of the rotating ring 42 is inserted into the corresponding limiting channel 111 and the limiting rib 511 on the top of the adjusting knob 51 is inserted into the corresponding limiting notch 4131 on the fixing ring 41. At this time, if Figures 1 to 5 As shown, the coffee grinder is in the initial state. In this state, the valve assembly 4 is closed, the heads of all valve plates 44 extend out of the interlayer 410 and jointly block the material discharge port 21, each connecting shaft 411 is located at the first end of the corresponding oval hole 431, and the first limiting protrusion 412 can enter and exit the machine body 1 through the corresponding limiting channel 111, thereby facilitating the loading and unloading of the bean hopper 2 at the top of the machine body 1.

[0080] Next, rotate the bean hopper 2 counterclockwise. Due to the constraint relationship between the mounting ring 43 and the rotating ring 42 (the second protrusion 422 is positioned in front of the rotation direction of the third protrusion 433), the mounting ring 43 remains stationary relative to the machine body 1. At the same time, the bean hopper 2 drives the fixed ring 41 to rotate relative to the movable ring 42. On the one hand, the first protrusion 4211 disengages from the first positioning groove 4121, and the first limiting protrusion 412 is positioned below the corresponding arc-shaped flange 11, thereby preventing the bean hopper 2 from disengaging from the machine body 1 during operation. On the other hand, the connecting shaft 411 drives each valve plate 44 to revolve around the axis of the bean hopper 2. Due to the constraint relationship between the limiting post 441 of the valve plate 44 and the limiting groove 432 of the mounting ring 43, all valve plates 44 rotate around the corresponding connecting shaft 411 during the revolution of the bean hopper 2, thereby releasing the blockage of the discharge port 21 until the valve assembly 4 is fully opened. Figures 6 to 8 As shown, all valve plates 44 are hidden in the interlayer 410, and each connecting shaft 411 is located at the second end of the corresponding oblong hole 431.

[0081] Continue rotating the bean hopper 2 counterclockwise. Due to the constraint relationship between the connecting shaft 411 and the oblong hole 431, the connecting shaft 411 will forcibly drive the mounting ring 43 to rotate synchronously, so that the third protrusion 433 disengages from the second positioning groove 42, passes over the second protrusion 422, and enters the clearance groove 424. Figure 9 and Figure 10 As shown, when the third protrusion 433 has just entered the clearance groove 424, the indicator line 12 points to the initial scale position of the scale line 22.

[0082] Continue rotating the bean hopper 2 counterclockwise to adjust the gear. Figure 11 and Figure 12 As shown, the third protrusion 433 can be slidably inserted into the relief groove 424. The bean hopper 2 drives the adjusting knob 51 to rotate synchronously through the fixing ring 41. Since the screw sleeve 52 is threaded to the outer circumference of the second cutter disc seat 32, the screw sleeve 52 will drive the second cutter disc seat 32 to move up and down relative to the first cutter disc seat 31 during the rotation of the adjusting knob 51, thereby adjusting the gap between the second cutter disc 34 and the first cutter disc 33, and thus realizing the adjustment of the grinding fineness. It is worth noting that during the gear adjustment process, since there is no longer a constraint relationship between the mounting ring 43 and the rotating ring 42 (the third protrusion 433 is not a constraint relationship between the mounting ring 43 and the rotating ring 42), the grinding fineness can be adjusted. The second protrusion 422 is not located in front of the third protrusion 433 in the direction of rotation. The mounting ring 43 will rotate synchronously with the bean hopper 2 under the action of friction. At the same time, the bean hopper 2 drives the fixed ring 41 to rotate relative to the movable ring 42, and then drives each valve plate 44 to revolve around the axis of the bean hopper 2 through the connecting shaft 411. In this way, all valve plates 44 will remain stationary relative to the mounting ring 43 and the bean hopper 2 during the process of revolving with the bean hopper 2. That is to say, the rotation of the bean hopper 2 will not cause the valve plate 44 to rotate on its own, thereby avoiding affecting the opening and closing state of the valve assembly 4 during the gear adjustment process.

[0083] Finally, the drive unit 35 is activated to drive the first cutter head 33 to rotate relative to the second cutter head 34, grinding the coffee beans in the grinding chamber 10 into coffee powder.

[0084] (2) After grinding the beans:

[0085] Rotating the bean hopper 2 clockwise causes the mounting ring 43 to rotate synchronously with the bean hopper 2 under friction until the third protrusion 433 contacts the second protrusion 422. Due to the constraint relationship between the mounting ring 43 and the rotating ring 42 (the second protrusion 422 is positioned in front of the rotation direction of the third protrusion 433), the mounting ring 43 remains stationary relative to the machine body 1. Simultaneously, the bean hopper 2 drives the fixed ring 41 to rotate relative to the movable ring 42, which in turn drives each valve plate 44 to revolve around the axis of the bean hopper 2 via the connecting shaft 411. Due to the constraint relationship between the limiting post 441 of the valve plate 44 and the limiting groove 432 of the mounting ring 43, all valve plates 44 rotate around their corresponding connecting shaft 411 during the revolution of the bean hopper 2, thus blocking the material discharge port 21. At this time, if... Figure 13and Figure 14 As shown, the valve assembly 4 is in the closed state, the heads of all valve plates 44 extend out of the interlayer 410 and jointly block the discharge port 21, and each connecting shaft 411 is reset to the first end of the corresponding oblong hole 431.

[0086] Continue rotating the bean hopper 2 clockwise. Due to the constraint relationship between the connecting shaft 411 and the oval hole 431, the connecting shaft 411 will force the mounting ring 43 to rotate synchronously, so that the third protrusion 433 will disengage from the clearance groove 424, pass the second protrusion 422, and enter the second positioning groove 42. At this time, the grinder will be reset to the initial state.

Claims

1. A coffee grinder, comprising: The body (1) has a grinding chamber (10) inside; The bean hopper (2) is rotatably mounted on the top of the machine body (1), and has a bean storage chamber (20) inside. The bottom has a discharge port (21) for connecting the grinding chamber (10) and the bean storage chamber (20). The grinding device (3) is located in the grinding chamber (10) and includes a first cutter disc (33) and a second cutter disc (34); A valve assembly (4) is installed at the bottom of the bean bin (2) for opening and closing the discharge port (21); as well as The gear adjustment component (5) is located between the bean bin (2) and the second cutter disc (34) to convert the rotational motion of the bean bin (2) into the lifting motion of the second cutter disc (34), thereby adjusting the gap between the second cutter disc (34) and the first cutter disc (33). The valve assembly (4) is characterized in that it includes: A fixing ring (41) is connected to the bottom of the bean hopper (2) by a plurality of connecting shafts (411) arranged circumferentially therebetween, and there is a sandwich (410) between the fixing ring (41) and the bean hopper (2); The rotating ring (42) is rotatably installed in the interlayer (410) and can be circumferentially confined within the body (1); A mounting ring (43) is rotatably mounted within the interlayer (410). The mounting ring (43) has a plurality of circumferentially extending oblong holes (431) corresponding to the connecting shafts (411) and a plurality of limiting grooves (432) corresponding to the oblong holes (431). Each connecting shaft (411) is slidably inserted into its corresponding oblong hole (431). The rotating ring (42) and the mounting ring (43) each have corresponding second protrusions (422) and third protrusions (433). Multiple valve plates (44) are arranged at intervals along the circumference of the mounting ring (43) in the interlayer (410) and correspond to the connecting shaft (411). Each valve plate (44) is rotatably connected to the outer periphery of the corresponding connecting shaft (411) and has a limiting post (441) that can be rotatably inserted into the corresponding limiting groove (432). During the rotation of the bean hopper (2): With the second protrusion (422) positioned in front of the rotation direction of the third protrusion (433), the mounting ring (43) remains stationary relative to the machine body (1), so that all the valve plates (44) can rotate around the corresponding connecting shaft (411) during the revolution of the corresponding connecting shaft (411) to block or release the blockage of the material discharge port (21); When the second protrusion (422) is not located in front of the rotation direction of the third protrusion (433), the mounting ring (43) can rotate synchronously with the bean hopper (2) so that all the valve plates (44) can remain stationary relative to the bean hopper (2) during the revolution with the corresponding connecting shaft (411).

2. The coffee grinder according to claim 1, characterized in that: When the valve assembly (4) is closed, each of the connecting shafts (411) is located at the first end of the corresponding oblong hole (431); With the valve assembly (4) fully open, each of the connecting shafts (411) is located at the second end of the corresponding oblong hole (431).

3. The coffee grinder according to claim 1, characterized in that: The rotating ring (42) also has a second positioning groove (423) and a clearance groove (424) located on both sides of the second protrusion (422), and the clearance groove (424) extends circumferentially along the rotating ring (42); In the initial state, the third protrusion (433) is inserted into the second positioning groove (423); During gear adjustment, the third protrusion (433) can be slidably inserted into the relief groove (424).

4. The coffee grinder according to claim 3, characterized in that: The outer peripheral wall at the bottom of the bean hopper (2) is provided with scale lines (22) arranged along its circumference, and the outer peripheral wall at the top of the machine body (1) is provided with vertically extending indicator lines (12), which can cooperate with the scale lines (22) to indicate the grinding level.

5. The coffee grinder according to claim 4, characterized in that: When the third protrusion (433) disengages from the second positioning groove (423), passes the second protrusion (422), and just enters the clearance groove (424), the indicator line (12) points to the initial scale position of the scale line (22).

6. The coffee grinder according to claim 1, characterized in that: The rotating ring (42) is sandwiched between the fixed ring (41) and the bean hopper (2); During gear adjustment, the rotating ring (42) can rotate synchronously with the bean bin (2) under the action of friction.

7. The coffee grinder according to claim 1, characterized in that: The inner wall of the body (1) is provided with a plurality of arc-shaped flanges (11) arranged at intervals along its circumference. There is a limiting channel (111) between the adjacent ends of two adjacent arc-shaped flanges (11). The outer peripheral wall of the rotating ring (42) is provided with a plurality of second limiting protrusions (421) corresponding to the limiting channels (111). Each of the second limiting protrusions (421) can be inserted into the corresponding limiting channel (111).

8. The coffee grinder according to claim 7, characterized in that: The outer peripheral wall of the fixing ring (41) is provided with a plurality of first limiting protrusions (412) corresponding to the second limiting protrusion (421); In the initial state, the valve assembly (4) is in the closed state, and the first limiting protrusion (412) can enter and exit the body (1) through the corresponding limiting channel (111); In all states other than the initial state, the first limiting protrusion (412) is positioned below the corresponding arcuate flange (11).

9. The coffee grinder according to claim 8, characterized in that: At least one of the second limiting protrusions (421) and the corresponding first limiting protrusion (412) has a corresponding first protrusion (4211) and a first positioning groove (4121) on their opposite surfaces; In the initial state, the first protrusion (4211) is inserted into the first positioning groove (4121); In states other than the initial state, the first protrusion (4211) disengages from the first positioning groove (4121).

10. The coffee grinder according to any one of claims 1 to 9, characterized in that: The grinding device (3) further includes a first cutter head seat (31) fixed relative to the machine body (1), a second cutter head seat (32) movably mounted on the top of the first cutter head seat (31), and a drive member (35) for driving the first cutter head (33) to rotate. The first cutter head (33) is rotatably mounted on the first cutter head seat (31), and the second cutter head (34) is mounted on the second cutter head seat (32). The gear adjustment component (5) includes: The adjustment knob (51) can be circumferentially limited to the bottom of the fixing ring (41); as well as A screw sleeve (52) is installed at the bottom of the adjusting knob (51) and threaded to the outer periphery of the second cutter head seat (32).

Images