Grinding device and coffee grinder

Abstract

This invention relates to the field of coffee machine technology, specifically to a grinding device and a coffee grinder, comprising a bean hopper assembly and a mounting base assembly. The bean hopper assembly is detachably inserted into the mounting base assembly. The bean hopper assembly has a locking buckle, and the mounting base assembly has a locking block. When the bean hopper assembly is inserted into the mounting base assembly, the locking buckle and the locking block cooperate to lock it in place. The bean hopper assembly has a bean inlet, a movable door assembly, and a push rod assembly. The movable door assembly is used to open or close the bean inlet, and the push rod assembly is used to lock or release the movable door assembly. When the push rod assembly locks the movable door assembly, the movable door assembly closes the bean inlet. The mounting base assembly has a boss corresponding to the push rod assembly. When the bean hopper assembly is inserted into the mounting base assembly, the boss pushes the push rod assembly to release the movable door assembly, thereby opening the bean inlet. Inserting and locking the bean hopper assembly into the mounting base assembly is convenient; and the bean inlet opens simultaneously upon insertion into the mounting base assembly.

Description

Technical Field

[0001] This invention relates to the field of coffee machine technology, and specifically to a grinding device and a coffee grinder. Background Technology

[0002] Currently, most coffee grinders on the market use a combination of plug-in and screw-in methods for installing the bean hopper assembly. The assembly is installed using a screw-in buckle and a screw-in groove. When plugging in, the screw-in buckle and the screw-in groove are misaligned. When screwing in, the screw-in buckle is screwed into the screw-in groove. At the same time, the bean hopper door can only be opened by rotating the bean hopper assembly, which makes the installation relatively cumbersome.

[0003] For example, the invention patent with patent publication number CN223473623U discloses a rotating positioning structure for a bean hopper and a coffee machine. This prior art sets a rotating positioning structure between the bean hopper body and the lower cover plate. During installation, the user drives the bean hopper body to insert into the lower cover plate, and then rotates it to a certain position to achieve a locking connection. During the continuous rotation of the bean hopper body, the blades rotate to open the bean outlet. The installation is relatively cumbersome and the assembly and disassembly efficiency is low.

[0004] Therefore, there is still room for improvement and development in existing technologies. Summary of the Invention

[0005] To address the problems of existing technologies, this invention proposes a grinding device and a coffee grinder. The bean hopper assembly is plugged into the mounting base assembly, and with the cooperation of the locking buckle and locking block, the bean hopper assembly can be locked onto the mounting base assembly after plugging in. At the same time, when the bean hopper assembly is plugged into the mounting base assembly, the boss pushes the top rod assembly to release the movable door assembly, so that the movable door assembly can open the bean outlet. It is not necessary to rotate the bean hopper assembly to assemble and open the bean outlet, making the assembly more convenient.

[0006] To achieve the above objectives, the technical solution applied in this invention is as follows: A grinding device includes a bean box assembly and a mounting base assembly. The bean box assembly is detachably inserted into the mounting base assembly. The bean box assembly has a locking buckle, and the mounting base assembly has a locking block. When the bean box assembly is inserted into the mounting base assembly, the locking buckle and the locking block cooperate to lock it. The bean box assembly has a lower bean inlet, a movable door assembly, and a push rod assembly. The movable door assembly is used to open or close the lower bean inlet, and the push rod assembly is used to lock or release the movable door assembly. When the push rod assembly locks the movable door assembly, the movable door assembly closes the lower bean inlet. The mounting base assembly has a boss corresponding to the push rod assembly. When the bean box assembly is inserted into the mounting base assembly, the boss pushes the push rod assembly to release the movable door assembly, thereby opening the lower bean inlet. This design allows the bean box assembly to be plugged into the mounting base assembly, and with the cooperation of the locking buckle and locking block, the bean box assembly can be locked onto the mounting base assembly after plugging in. At the same time, when the bean box assembly is plugged into the mounting base assembly, the boss pushes the top rod assembly to release the movable door assembly, so that the movable door assembly can open the lower bean opening. It is not necessary to rotate the bean box assembly to assemble and open the lower bean opening.

[0007] According to the above scheme, the locking buckle is provided with a locking pin, and the locking block is provided with a locking groove. When the locking buckle and the locking block are inserted and locked together, the locking pin and the locking groove engage and lock in place. This design, by providing the locking pin and the locking groove, makes the locking buckle and the locking block more reliable when they are inserted and locked together, preventing displacement of the bean box assembly.

[0008] According to the above scheme, a second spring is provided between the locking block and the mounting base assembly; a first inclined surface is provided on the locking buckle; the locking block is in an extended state under the elastic force of the second spring. When the bean box assembly is inserted into the mounting base assembly, the first inclined surface of the locking buckle slides with the locking block and overcomes the elastic force of the second spring to retract the locking block; when the locking buckle corresponds to the locking groove on the locking pin and the locking block, the locking block extends under the rebound force of the second spring so that the locking buckle and the locking block cooperate to lock.

[0009] According to the above scheme, the movable door assembly includes a movable door, a tension spring, and a turntable. The turntable is movably mounted on the bean box assembly, and the movable door is movably mounted on both the turntable and the bean box assembly. The first end of the tension spring is fixed to the bean box assembly, and the second end of the tension spring is fixed to the turntable. The movable door is used to open or close the bean outlet, and the push rod assembly is used to lock or release the turntable. Specifically, when the bean box assembly is not assembled on the mounting base assembly, the movable door assembly is in the closed bean outlet position to prevent bean leakage. At this time, the tension spring is in the stretched position, and the push rod assembly is in the locked turntable position. When the bean box assembly is inserted into the mounting base assembly, the boss pushes the push rod assembly to release the turntable. At this time, the rebound force of the tension spring pulls the turntable to rotate, and the rotation of the turntable drives the movable door to rotate, thereby opening the bean outlet.

[0010] According to the above scheme, the top rod assembly includes a spring and a top rod. The spring abuts against the top rod and the bean box assembly. The top rod, under the elastic force of the spring, is used to lock the turntable. When the bean box assembly is inserted into the mounting base assembly, the boss pushes the top rod 7 to overcome the elastic force of the spring and release the turntable. The turntable is provided with a slot that engages with the top rod. Specifically, when the bean box assembly is not assembled into the mounting base assembly, the top rod 7 and the slot engage under the elastic force of the spring to lock the turntable. When the bean box assembly is inserted into the mounting base assembly, the top rod moves upward and disengages from the slot, pulling the turntable to rotate under the rebound force of the tension spring. When the turntable rotates, it drives the movable door to rotate, thereby opening the bean outlet.

[0011] According to the above scheme, the movable door is provided with mounting post one and mounting post two, the bean box assembly is provided with mounting hole one, the turntable is provided with mounting hole two, mounting post one is hinged in mounting hole one, and mounting post two is hinged in mounting hole two; the bean box assembly is provided with fixing post one, the turntable is provided with fixing post two, the first end of the tension spring is fixed to fixing post one, and the second end of the tension spring is fixed to fixing post two.

[0012] According to the above scheme, the turntable is provided with a drive handle, and the mounting base assembly is provided with a guide mounting position corresponding to the drive handle. The guide mounting position is provided with a limiting step corresponding to the drive handle. The bean box assembly is detached from the mounting base assembly by rotation. When the bean box assembly is rotated, the drive handle drives the turntable to rotate in the opposite direction under the abutment of the limiting step, so that the movable door closes the bean opening. When assembling the bean box assembly, the drive handle is aligned and inserted into the guide mounting position. Once assembled, the locking buckle and locking block engage to lock the assembly. Simultaneously, the boss lifts the top rod, putting the tension spring in a stretched state. The tension spring pulls the turntable to rotate, causing the movable door to open the lower bean opening, thus completing the assembly. When disassembling the bean box assembly, the assembly is rotated. During rotation, the limit step abuts against the drive handle, causing the turntable to rotate in the opposite direction and closing the lower bean opening. Simultaneously, the boss and top rod dislocate during the rotation of the bean box assembly. The top rod, under the rebound force of spring one, resets and moves downward, engaging with the slot to lock the turntable. Simultaneously, the locking buckle and locking block dislocate during the rotation of the bean box assembly, and then the bean box assembly is lifted vertically to complete the disassembly.

[0013] According to the above scheme, a stop assembly is provided in the guide mounting position. The stop assembly includes a stop block and a spring three. The spring three is located between the stop block and the mounting base assembly. A locking platform is provided on the top of the stop block, and a second inclined surface is provided on the bottom of the stop block. The stop block is horizontally located on one side of the opening of the guide mounting position. The locking platform on its top is a planar structure. When the bean box assembly is assembled vertically, if the drive handle is aligned with the stop block for insertion, the stop block will not retract when the drive handle and the locking platform abut. In this case, the bean box assembly cannot be assembled. It can only be vertically inserted into the mounting base assembly when the drive handle is aligned with the guide mounting position. Furthermore, because there is a second inclined surface on the bottom of the block, during the lifting process of the bean box assembly, the drive handle abuts against the second inclined surface of the stop block and slides. During the sliding process, the stop block retracts.

[0014] According to the above scheme, the bean box assembly is provided with a flange, and the mounting base assembly is provided with a safety switch. When the bean box assembly is inserted into the mounting base assembly, the flange triggers the safety switch. When the flange triggers the safety switch, the circuit is connected, and the machine can enter normal operation. When the bean box assembly is not assembled or is not properly assembled, the safety switch cannot be triggered, and the machine cannot enter normal operation.

[0015] The present invention discloses a coffee grinder, comprising a main unit and the aforementioned grinding device. The main unit is equipped with a grinding motor assembly, which has two grinding gap adjustment rings: a second grinding gap adjustment ring and a third grinding gap adjustment ring. The bean hopper assembly has a first grinding gap adjustment ring. The first and second grinding gap adjustment rings are kinetically connected, as are the second and third grinding gap adjustment rings. When the grind size needs to be adjusted, rotating the first grinding gap adjustment ring causes the second and third grinding gap adjustment rings to rotate, thereby adjusting the blade gap.

[0016] Beneficial effects of this invention: The present invention is configured such that the bean box assembly is plugged into the mounting base assembly, and with the cooperation of the locking buckle and locking block, the bean box assembly can be locked onto the mounting base assembly after plugging in; at the same time, when the bean box assembly is plugged into the mounting base assembly, the boss pushes the top rod assembly to release the movable door assembly, so that the movable door assembly opens the lower bean opening, eliminating the need to rotate the bean box assembly to assemble and open the lower bean opening, making assembly more convenient. Attached Figure Description

[0017] Figure 1 This is an exploded view of the bean box component of the present invention; Figure 2 This is a schematic diagram of the mounting bracket assembly of the present invention; Figure 3 This is a cross-sectional view of the plug-in locking component after the bean box assembly of the present invention is completed; Figure 4 This is an exploded view of the plug-in locking component of the present invention; Figure 5 This is a cross-sectional view of the position of the push rod assembly when the lower bean opening is opened according to the present invention; Figure 6 This is a schematic diagram of the movable door assembly when the lower bean opening of the present invention is opened; Figure 7 This is a cross-sectional view of the position of the push rod assembly when the lower bean opening is closed according to the present invention; Figure 8 This is a schematic diagram of the movable door assembly when the lower bean opening of the present invention is closed; Figure 9 This is a schematic diagram of the movable gate of the present invention; Figure 10 This is a schematic diagram of the base of the present invention; Figure 11 This is a schematic diagram of the turntable of the present invention; Figure 12 This is a schematic diagram of the mounting base of the present invention; Figure 13 This is a schematic diagram of the mounting base principle during the assembly of the bean box component of the present invention; Figure 14 This is a schematic diagram of the mounting base principle during disassembly of the bean box assembly of the present invention; Figure 15 This is a schematic diagram of the stop assembly of the present invention; Figure 16 This is a schematic diagram of the grinding motor assembly of the present invention.

[0018] In the picture: 1. Bean box; 101. Flange; 2. Movable door; 21. Mounting post one; 22. Mounting post two; 3. Tension spring; 4. Turntable; 41. Fixed post two; 42. Mounting hole two; 43. Drive handle; 44. Slot; 5. Base; 51. Locking buckle; 511. Locking post; 512. Angled surface one; 52. Mounting hole one; 53. Fixed post one; 6. Spring one; 7. Top rod; 8. Pressure plate; 9. Locking block; 91. Locking groove; 10. Spring two; 11. Stop block; 111. Locking platform; 112. Angled surface two; 12. Spring three; 14. Mounting seat; 141. Boss; 142. Limiting step; 143. Guide mounting position; 15. Grinding gap adjusting ring one; 16. Top cover; 17. Safety switch; 18. Grinding gap adjusting ring two; 19. Grinding gap adjusting ring three; 20. Grinding motor assembly; Detailed Implementation

[0019] The technical solution of the present invention will be described below with reference to the accompanying drawings and embodiments.

[0020] like Figures 1 to 16As shown, the present invention provides a grinding device, including a bean box assembly and a mounting base assembly. The bean box assembly is detachably inserted into the mounting base assembly. The bean box assembly is provided with a locking buckle 51, and the mounting base assembly is provided with a locking block 9. When the bean box assembly is inserted into the mounting base assembly, the locking buckle 51 and the locking block 9 cooperate to lock it. The bean box assembly is provided with a lower bean opening, a movable door assembly, and a push rod assembly. The movable door assembly is used to open or close the lower bean opening, and the push rod assembly is used to lock or release the movable door assembly. When the push rod assembly locks the movable door assembly, the movable door assembly closes the lower bean opening. The mounting base assembly is provided with a boss 141 corresponding to the push rod assembly. When the bean box assembly is inserted into the mounting base assembly, the boss 141 pushes the push rod assembly to release the movable door assembly, so that the movable door assembly opens the lower bean opening. This configuration allows the bean box assembly to be plugged into the mounting base assembly, and with the cooperation of the locking buckle 51 and the locking block 9, the bean box assembly can be locked onto the mounting base assembly after plugging in. At the same time, when the bean box assembly is plugged into the mounting base assembly, the boss 141 pushes the top rod assembly to release the movable door assembly, so that the movable door assembly can open the lower bean opening. It is not necessary to rotate the bean box assembly to assemble and open the lower bean opening, making the assembly more convenient.

[0021] Among them, such as Figure 1 , 2 As shown, the bean box assembly includes a lid, a bean box 1, and a base 5; the mounting base assembly includes a mounting base 14 and a top cover 16; the locking buckle 51 is located on the outer wall of the base 5, and the locking block 9 is telescopically mounted on the inner wall of the mounting base 14; the base 5 and the mounting base 14 are assembled by plugging in; the lower bean opening is located on the base 5, and the movable door assembly is movably mounted on the base 5; the top rod assembly is movably mounted on the mounting base 14.

[0022] Preferably, there are three sets of locking buckles 51 and locking blocks 9, which makes the locking stable and reliable.

[0023] Furthermore, such as Figure 3 , 4 As shown, the locking buckle 51 is provided with a locking pin 511, and the locking block 9 is provided with a locking groove 91. When the locking buckle 51 and the locking block 9 are engaged and locked, the locking pin 511 and the locking groove 91 engage and lock in place. This design, by setting the locking pin 511 and the locking groove 91, makes the engagement of the locking buckle 51 and the locking block 9 more reliable and prevents displacement of the bean box assembly.

[0024] Furthermore, a second spring 10 is provided between the locking block 9 and the mounting base assembly; the locking buckle 51 is provided with an inclined surface 512; the locking block 9 is in an extended state under the elastic force of the second spring 10. When the bean box assembly is inserted into the mounting base assembly, the inclined surface 512 of the locking buckle 51 slides with the locking block 9 and overcomes the elastic force of the second spring 10 to retract the locking block 9; when the locking buckle 51 corresponds to the locking groove 91 on the locking pin 511 and the locking block 9, the locking block 9 extends under the rebound force of the second spring 10 so that the locking buckle 51 and the locking block 9 cooperate to lock.

[0025] The locking pin 511 is located on the top of the locking buckle 51 and has a semi-cylindrical structure. The locking groove 91 is located on the outer edge of the locking block 9 and has a semi-circular groove structure. When the locking pin 511 and the locking groove 91 are engaged, the locking block 9 can lock the locking pin 511 when it is not under force. When the bean box assembly is disassembled by rotating, the bean box assembly drives the locking buckle 51 to rotate. At this time, the locking block 9 is retracted under force, and the locking pin 511 can slide out along the inner wall of the semi-circular groove.

[0026] The inclined surface 512 is located on the bottom of the locking buckle 51. Of course, the inclined surface 512 can also be located on the top of the locking block 9.

[0027] Furthermore, such as Figure 5 , 6 As shown in Figures 7 and 8, the movable door assembly includes a movable door 2, a tension spring 3, and a turntable 4. The turntable 4 is movably mounted on the bean box assembly, and the movable door 2 is movably mounted on the turntable 4 and the bean box assembly. The first end of the tension spring 3 is fixed to the bean box assembly, and the second end of the tension spring 3 is fixed to the turntable 4. The movable door 2 is used to open or close the lower bean opening, and the top rod assembly is used to lock or release the turntable 4.

[0028] When the bean box assembly is not assembled on the mounting base assembly, the movable door assembly is in the closed bean opening position to prevent bean leakage. At this time, the tension spring 3 is in the stretched position, and the top rod assembly is in the locked position of the turntable 4. When the bean box assembly is inserted into the mounting base assembly, the boss 141 pushes the top rod assembly to release the turntable 4. At this time, the rebound force of the tension spring 3 pulls the turntable 4 to rotate. When the turntable 4 rotates, it drives the movable door 2 to rotate, thereby opening the bean opening.

[0029] Preferably, there are three movable doors 2, which are evenly distributed. When the turntable 4 rotates, it drives the three movable doors 2 to open or close the bean outlet.

[0030] Furthermore, the push rod assembly includes a spring 6 and a push rod 7, with the spring 6 abutting against the push rod 7 and the bean box assembly; the push rod 7 is used to lock the turntable 4 under the elastic force of the spring 6; when the bean box assembly is inserted into the mounting base assembly, the boss 141 pushes the push rod 7 to overcome the elastic force of the spring 6 and release the turntable 4; the turntable 4 is provided with a slot 44 that cooperates with the push rod 7 to engage.

[0031] When the bean box assembly is not installed on the mounting base assembly, the top rod 7 and the slot 44 engage under the elastic force of the spring 6 to lock the turntable 4. When the bean box assembly is inserted into the mounting base assembly, the top rod 7 moves upward and disengages from the slot 44. Under the rebound force of the tension spring 3, the turntable 4 is pulled to rotate. When the turntable 4 rotates, it drives the movable door 2 to rotate, thereby opening the bean outlet.

[0032] The slot 44 is located on the outer edge of the turntable 4; the bean box assembly is provided with a receiving groove for accommodating the top rod assembly, and the opening of the receiving groove is provided with a pressure plate 8 for limiting the top rod 7.

[0033] Furthermore, such as Figure 9 , 10 As shown in Figure 11, the movable door 2 is provided with mounting post 1 21 and mounting post 22, the bean box assembly is provided with mounting hole 1 52, and the turntable 4 is provided with mounting hole 2 42. Mounting post 1 21 is hinged in mounting hole 1 52, and mounting post 22 is hinged in mounting hole 2 42. The bean box assembly is provided with fixing post 1 53, and the turntable 4 is provided with fixing post 2 41. The first end of the tension spring 3 is fixed to fixing post 1 53, and the second end of the tension spring 3 is fixed to fixing post 2 41.

[0034] When the tension spring 3 pulls the turntable 4 to rotate, it drives the movable door 2 to rotate, and the movable door 2 rotates around the axis of the mounting column 21.

[0035] The first mounting post 21 and the second mounting post 22 are spaced apart on the bottom of the movable door 2.

[0036] Furthermore, such as Figure 12 , 13 As shown in Figures 14 and 15, the turntable 4 is provided with a drive handle 43, and the mounting base assembly is provided with a guide mounting position 143 corresponding to the drive handle 43. The guide mounting position 143 is provided with a limiting step 142 corresponding to the drive handle 43. The bean box assembly is detached from the mounting base assembly by rotation. When the bean box assembly is rotated, the drive handle 43 drives the turntable 4 to rotate in the opposite direction under the abutment of the limiting step 142, so that the movable door 2 closes the bean opening.

[0037] When assembling the bean box assembly, the drive handle 43 is aligned and inserted with the guide mounting position 143. Once assembled, the locking buckle 51 and the locking block 9 lock together, while the boss 141 pushes up the top rod 7. At this time, the tension spring 3 is in a stretched state, and the tension spring 3 pulls the turntable 4 to rotate. During the rotation, the movable door 2 opens the lower bean opening, completing the assembly. When disassembling the bean box assembly, the bean box assembly is rotated. During the rotation, the limiting step 142 abuts against the drive handle 43, causing the turntable 4 to rotate in the opposite direction and causing the movable door 2 to close the lower bean opening. At the same time as the bean box assembly rotates, the boss 141 and the top rod 7 are misaligned and disengaged. The top rod 7 is reset and moved down under the rebound force of the spring 6 and engages with the slot 44 to lock the turntable 4. At the same time as the bean box assembly rotates, the locking buckle 51 and the locking block 9 are also misaligned and disengaged. Then, the bean box assembly is lifted vertically to complete the disassembly.

[0038] Furthermore, the guide mounting position 143 is provided with a stop assembly, which includes a stop 11 and a spring 12. The spring 12 is located between the stop 11 and the mounting base assembly. The top of the stop 11 is provided with a locking platform 111, and the bottom of the stop 11 is provided with a slope 112.

[0039] The stop block 11 is horizontally located on one side of the opening of the guide mounting position 143. It has a locking platform 111 on its top. The locking platform 111 is a planar structure. When the bean box assembly is assembled vertically, if the drive handle 43 is aligned with the stop block 11 for insertion, the stop block 11 will not retract when the drive handle 43 and the locking platform 111 abut. At this time, the bean box assembly cannot be assembled. It can only be inserted vertically with the mounting base assembly when the drive handle 43 is aligned with the guide mounting position 143. Moreover, since there is a second inclined surface 112 on the bottom of the block 11, when the bean box assembly is lifted, the drive handle 43 abuts against the second inclined surface 112 of the stop block 11 and slides. During the sliding process, the stop block 11 retracts.

[0040] Preferably, there are two drive handles 43, symmetrically arranged on the outer edge of the turntable 4.

[0041] Furthermore, such as Figure 1 , 2 As shown, the bean box assembly is provided with a flange 101, and the mounting base assembly is provided with a safety switch 17. When the bean box assembly is inserted into the mounting base assembly, the flange 101 triggers the safety switch 17.

[0042] When flange 101 triggers safety switch 17, the circuit is connected and the machine can enter normal operation. When the bean box assembly is not assembled or is not assembled properly, safety switch 17 cannot be triggered and the machine cannot enter normal operation.

[0043] The coffee grinder of the present invention includes a main unit and the grinding device described above. The main unit is provided with a grinding motor assembly 20, and the grinding motor assembly 20 is provided with a second grinding gap adjustment ring 18 and a third grinding gap adjustment ring 19. The bean box assembly is provided with a first grinding gap adjustment ring 15. The first grinding gap adjustment ring 15 and the second grinding gap adjustment ring 18 are connected in a driving manner, and the second grinding gap adjustment ring 18 and the third grinding gap adjustment ring 19 are also connected in a driving manner.

[0044] When it is necessary to adjust the coarseness of the grinding powder, rotating the grinding gap adjustment ring 15 causes the grinding gap adjustment rings 18 and 19 to rotate, thereby adjusting the blade clearance. Since the grinding blade structure is existing technology, it will not be described in detail.

[0045] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other modifications under the guidance of the present invention without departing from the spirit and scope of the claims. All of these modifications are within the scope of protection of the present invention.

Claims

1. A grinding apparatus, characterized in that: It includes a bean box assembly and a mounting base assembly, wherein the bean box assembly is detachably plugged into the mounting base assembly; The bean box assembly is provided with a locking buckle (51), and the mounting base assembly is provided with a locking block (9). When the bean box assembly is inserted into the mounting base assembly, the locking buckle (51) and the locking block (9) cooperate to lock it. The bean box assembly is provided with a bean inlet, a movable door assembly, and a top rod assembly. The movable door assembly is used to open or close the bean inlet, and the top rod assembly is used to lock or release the movable door assembly. When the top rod assembly locks the movable door assembly, the movable door assembly closes the bean inlet. The mounting base assembly is provided with a boss (141) corresponding to the top rod assembly. When the bean box assembly is inserted into the mounting base assembly, the boss (141) pushes the top rod assembly to release the movable door assembly, so that the movable door assembly opens the lower bean opening.

2. The grinding apparatus according to claim 1, characterized in that: The locking buckle (51) is provided with a locking pin (511), and the locking block (9) is provided with a locking groove (91); when the locking buckle (51) and the locking block (9) are inserted and locked, the locking pin (511) and the locking groove (91) are engaged and locked.

3. The grinding apparatus according to claim 2, characterized in that: A second spring (10) is provided between the locking block (9) and the mounting base assembly; a first inclined surface (512) is provided on the locking buckle (51); the locking block (9) is in an extended state under the elastic force of the second spring (10). When the bean box assembly is inserted into the mounting base assembly, the first inclined surface (512) of the locking buckle (51) slides with the locking block (9) and overcomes the elastic force of the second spring (10) to retract the locking block (9); when the locking buckle (51) and the locking post (511) and the locking block (9) correspond to the locking groove (91), the locking block (9) is extended under the rebound force of the second spring (10) so that the locking buckle (51) and the locking block (9) cooperate to lock.

4. The grinding apparatus according to claim 1, characterized in that: The movable door assembly includes a movable door (2), a tension spring (3), and a turntable (4). The turntable (4) is movably mounted on the bean box assembly. The movable door (2) is movably mounted on the turntable (4) and the bean box assembly. The first end of the tension spring (3) is fixed on the bean box assembly, and the second end of the tension spring (3) is fixed on the turntable (4). The movable door (2) is used to open or close the lower bean opening, and the top rod assembly is used to lock or release the turntable (4).

5. A grinding apparatus according to claim 4, characterized in that: The push rod assembly includes a spring (6) and a push rod (7), the spring (6) abutting against the push rod (7) and the bean box assembly; the push rod (7) is used to lock the turntable (4) under the elastic force of the spring (6); when the bean box assembly is inserted into the mounting base assembly, the boss (141) pushes the push rod (7) to overcome the elastic force of the spring (6) and release the turntable (4).

6. A grinding apparatus according to claim 5, characterized in that: The turntable (4) is provided with a slot (44) that engages with the top rod (7).

7. A grinding apparatus according to claim 4, characterized in that: The movable door (2) is provided with mounting post one (21) and mounting post two (22). The bean box assembly is provided with mounting hole one (52). The turntable (4) is provided with mounting hole two (42). Mounting post one (21) is hinged in mounting hole one (52). Mounting post two (22) is hinged in mounting hole two (42). The bean box assembly is provided with fixing post one (53). The turntable (4) is provided with fixing post two (41). The first end of the tension spring (3) is fixed to fixing post one (53). The second end of the tension spring (3) is fixed to fixing post two (41).

8. A grinding apparatus according to claim 4, characterized in that: The turntable (4) is provided with a drive handle (43), and the mounting base assembly is provided with a guide mounting position (143) corresponding to the drive handle (43). The guide mounting position (143) is provided with a limiting step (142) corresponding to the drive handle (43). The bean box assembly is detached from the mounting base assembly by rotation. When the bean box assembly is rotated, the drive handle (43) drives the turntable (4) to rotate in the opposite direction under the contact of the limiting step (142), so that the movable door (2) closes the lower bean opening.

9. A grinding apparatus according to claim 8, characterized in that: The guide mounting position (143) is provided with a stop block assembly, which includes a stop block (11) and a spring three (12). The spring three (12) abuts between the stop block (11) and the mounting base assembly. The top of the stop block (11) is provided with a locking platform (111), and the bottom of the stop block (11) is provided with a slope two (112).

10. A grinding apparatus according to claim 1, characterized in that: The bean box assembly is provided with a flange (101), and the mounting base assembly is provided with a safety switch (17). When the bean box assembly is inserted into the mounting base assembly, the flange (101) triggers the safety switch (17).

11. A coffee grinder, characterized in that: The device includes a main unit and a grinding device as described in any one of claims 1-10. The main unit is provided with a grinding motor assembly (20), the grinding motor assembly (20) is provided with a second grinding gap adjustment ring (18) and a third grinding gap adjustment ring (19), the bean box assembly is provided with a first grinding gap adjustment ring (15), the first grinding gap adjustment ring (15) and the second grinding gap adjustment ring (18) are connected in a transmission, and the second grinding gap adjustment ring (18) and the third grinding gap adjustment ring (19) are connected in a transmission.

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