Bean container locking structure of bean grinder

Abstract

A bean container locking structure of a bean grinder comprises a main machine and a bean container, a fixing seat is arranged on the main machine, a rotary locking mounting portion is arranged between the bean container and the fixing seat, and the bean container is rotatably mounted on the fixing seat through the rotary locking mounting portion. The bean container is arranged on the fixed seat, the bean container is vertically positioned and circumferentially positioned on the fixed seat through the rotary locking mounting part, an elastic positioning assembly is arranged on the bean container, a positioning part is arranged on the fixed seat, and the positioning assembly is elastically clamped into the positioning part to limit the bean container to reversely rotate on the fixed seat. According to the utility model, the rotary locking mounting part is arranged between the bean container and the fixed seat, the bean container is vertically positioned and circumferentially positioned on the fixed seat through the rotary locking mounting part, and in addition, the positioning component of the bean container is elastically clamped into the positioning part of the fixed seat so as to limit the bean container to reversely rotate on the fixed seat; therefore, the bean container is locked on the fixing seat, and the bean container is prevented from loosening on the main machine when the bean grinder is used.

Description

TECHNICAL FIELD

[0001] The utility model relates to a bean grinder technical field, especially a kind of bean container locking structure of bean grinder. BACKGROUND

[0002] Traditional bean grinder generally includes host computer and bean container, bean container is used to store coffee beans, host computer is provided with the grinding cavity for grinding coffee beans, when bean grinder works, coffee beans in bean container fall into grinding cavity and are ground, bean container is generally fixed on host computer by buckle, facilitate the disassembly and assembly of bean container, but the fixed mode of buckle is not reliable, bean container is prone to looseness on host computer when using bean grinder, even can be taken out of host computer.

[0003] Therefore, it is necessary to make further improvement. INVENTION CONTENTS

[0004] The utility model aims at providing a kind of bean container locking structure of bean grinder, with simple structure, good locking effect, firm fixing, easy adjustment and strong practicality, to overcome the deficiencies of prior art.

[0005] A kind of bean container locking structure of bean grinder designed according to the purpose, including host computer and bean container, characterized by: host computer is provided with fixed seat, rotating locking mounting portion is arranged between bean container and fixed seat, bean container is rotatably mounted on fixed seat by rotating locking mounting portion, and bean container is positioned on fixed seat by rotating locking mounting portion in the up and down and circumferential direction, elastic positioning assembly is arranged on bean container, positioning portion is arranged on fixed seat, positioning assembly is elastically clamped into positioning portion, to limit the reverse rotation of bean container on fixed seat.

[0006] Positioning assembly includes top rod and first elastic member, positioning portion is positioning groove, first elastic member is arranged between bean container and top rod, and side wall is arranged on positioning groove in the up and down inclination;When bean container is mounted on fixed seat, top rod is clamped into positioning groove under the elastic force of first elastic member;When bean container is rotated and dismounted on fixed seat, top rod moves upward under the action of side wall, to compress first elastic member, and then make top rod move out of positioning groove.

[0007] Bean container is provided with movable hole, top rod is movably arranged on movable hole in the up and down direction, first elastic member is arranged in movable hole, one end of first elastic member abuts on the bottom wall of movable hole, and the other end of first elastic member is connected with top rod.

[0008] Rotating locking mounting portion includes locking groove arranged on bean container and locking protrusion arranged on fixed seat, locking protrusion is rotated into or out of locking groove, to make bean container rotatable and dismountable on fixed seat.

[0009] The locking groove is L-shaped, comprising a locking groove and an unlocking groove, the locking protrusion is screwed into or out of the locking groove through the unlocking groove, the locking groove is provided with a first limiting surface on the upper and lower sides respectively, the locking protrusion is provided with a second limiting surface on the upper and lower sides respectively, the bean container is positioned on the fixed seat in the up and down direction through the cooperation of the first limiting surface and the second limiting surface, the locking groove is provided with a third limiting surface on one side, the locking protrusion is provided with a fourth limiting surface on one side, and the bean container is circumferentially positioned on the fixed seat through the cooperation of the third limiting surface and the fourth limiting surface.

[0010] The bean container comprises a cup seat and a cup body mounted on the cup seat, the cup seat is provided with sliding doors that open and close each other in sliding manner, the fixed seat is provided with an action rib, the sliding doors are provided with action holes, the main machine is provided with a grinding cavity, and when the bean container is rotatably mounted on the fixed seat, the action rib acts on the action hole to make the sliding doors slide and open each other, and then an opening is formed between the sliding doors, and the inner cavity of the cup body is communicated with the grinding cavity through the opening.

[0011] The cup seat is provided with a column, and a second elastic element is arranged between the column and the sliding door, the second elastic element is stretched when the sliding doors slide and open each other, and when the bean container is rotated and dismounted on the fixed seat, the sliding doors slide and close each other under the elastic force of the second elastic element.

[0012] The cup seat is provided with a guide rail, and the sliding door is provided with a guide rail groove, the sliding door is linearly arranged on the guide rail through the guide rail groove.

[0013] The main machine is provided with a grinding device, the grinding device comprises a motor, a lower conical grinding wheel and an upper grinding wheel assembly, the output shaft of the motor is drivingly connected with the lower conical grinding wheel, the upper grinding wheel assembly is arranged on the periphery of the lower conical grinding wheel, the grinding cavity is arranged on the upper grinding wheel assembly, and a grinding gap is arranged between the upper grinding wheel assembly and the lower conical grinding wheel, the grinding gap is located at the bottom of the grinding cavity and is communicated with the grinding cavity.

[0014] The upper grinding wheel assembly comprises an upper conical grinding wheel, a fixing frame and a fixing ring, the grinding gap is arranged between the upper conical grinding wheel and the lower conical grinding wheel, the main machine is further provided with an adjusting assembly, the adjusting assembly comprises a rotating wheel and a rotating ring that are interconnected, the rotating wheel and the rotating ring are rotatably installed on the main machine, the fixing ring is arranged in the interior of the rotating ring, a plurality of lugs are annularly arranged on the outer periphery of the fixing ring, a threaded portion is arranged on the inner side of the rotating ring, the lugs and the threaded portion are interconnected, the fixing frame is installed in the interior of the fixing ring, the upper conical grinding wheel is installed on the fixing frame, and the fixed seat is arranged in the interior of the rotating wheel and presses the rotating wheel downward; when the rotating wheel rotates, the rotating ring is driven to rotate, the fixing ring is driven to move up and down, the fixing ring drives the fixing frame and the upper conical grinding wheel to move up and down, and the size of the grinding gap is adjusted.

[0015] The locking structure of the bean loading container of the bean grinder is characterized in that a rotating locking mounting part is arranged between the bean loading container and the fixing base, the bean loading container is positioned on the fixing base in the up-down direction and the circumferential direction through the rotating locking mounting part, in addition, the positioning assembly of the bean loading container is elastically clamped into the positioning part of the fixing base to limit the reverse rotation of the bean loading container on the fixing base, and the bean loading container is locked on the fixing base, thereby preventing the bean loading container from loosening or even falling out of the main machine during the use of the bean grinder. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the bean grinder in an embodiment of the present application.

[0017] Figure 2 It is a sectional view of the bean grinder in an embodiment of the present application.

[0018] Figure 3 It is a sectional view of the bean grinder in an embodiment of the present application.

[0019] Figure 4 It is a sectional view of the bean loading container in an embodiment of the present application.

[0020] Figure 5 It is a schematic diagram of the overall structure of the bean loading container in an embodiment of the present application.

[0021] Figure 6 It is Figure 5 It is an enlarged structure schematic diagram of position A.

[0022] Figure 7 It is an assembly structure sectional view of the bean loading container and the fixing base in an embodiment of the present application.

[0023] Figure 8 It is a schematic diagram of the overall structure of the bean loading container in another orientation in an embodiment of the present application.

[0024] Figure 9 It is a schematic diagram of part of the structure of the bean grinder in an embodiment of the present application.

[0025] Figure 10 It is a schematic diagram of the mutual sliding opening of the sliding doors in an embodiment of the present application.

[0026] Figure 11 It is a schematic diagram of the mutual sliding closing of the sliding doors in an embodiment of the present application.

[0027] Figure 12 It is a schematic diagram of the exploded structure of the bean loading container in an embodiment of the present application.

[0028] Figure 13 It is a schematic diagram of the exploded structure of the positioning assembly and the cup base in an embodiment of the present application.

[0029] Figure 14 It is the whole structure schematic view of sliding door in one embodiment of the utility model.

[0030] Figure 15 It is the assembly structure schematic view of adjusting assembly and fixed ring in one embodiment of the utility model.

[0031] Figure 16 It is the whole structure schematic view of fixed seat in one embodiment of the utility model.

[0032] Figure 17 It is the exploded structure schematic view of bean grinder in one embodiment of the utility model. DETAILED DESCRIPTION

[0033] The utility model will be further described in connection with the drawings and embodiments.

[0034] Referring to Figures 1-17 The bean container locking structure of the bean grinder includes a host 1 and a bean container 2, the host 1 is provided with a fixed seat 3, a rotary locking mounting portion is arranged between the bean container 2 and the fixed seat 3, the bean container 2 is installed on the fixed seat 3 in clockwise rotation through the rotary locking mounting portion, and the bean container 2 is positioned on the fixed seat 3 in up-down and circumferential directions through the rotary locking mounting portion, the bean container 2 is provided with an elastic positioning assembly, the fixed seat 3 is provided with a positioning portion, and the positioning assembly is elastically clamped into the positioning portion to limit the reverse rotation (i.e. counterclockwise rotation) of the bean container 2 on the fixed seat 3.

[0035] The positioning assembly includes a top rod 4 and a first elastic member 5, the first elastic member 5 is a spring, the positioning portion is a positioning groove 6, the first elastic member 5 is arranged between the bean container 2 and the top rod 4, and the positioning groove 6 is provided with an up-down inclined side wall 7; when the bean container 2 is installed on the fixed seat 3, the top rod 4 is clamped into the positioning groove 6 downward under the elastic force of the first elastic member 5, and the bean container 2 will not rotate reversely under the action of the spring force; when the bean container 2 is rotated and dismounted on the fixed seat 3, the top rod 4 moves upward under the action of the side wall 7 to compress the first elastic member 5, and then the top rod 4 moves out of the positioning groove 6; when the bean container 2 is taken out of the host 1, the bean container 2 is only slightly twisted reversely (counterclockwise) to make the top rod 4 move out of the positioning groove 6, and then the bean container 2 is lifted upward, and the bean container 2 can be taken out of the host 1.

[0036] The bean container 2 is provided with a movable hole 8, the top rod 4 is movably arranged on the movable hole 8 in up-down directions, the first elastic member 5 is arranged in the movable hole 8, the upper end of the first elastic member 5 abuts against the bottom wall of the movable hole 8, and the lower end of the first elastic member 5 is connected with the top rod 4.

[0037] A limiting plate 39 is arranged below the movable hole 8, and the limiting plate 39 is fixed on the bean container 2 by screws, and the top rod 4 is limited by the limiting plate 39 when moving downward.

[0038] The rotation locking mounting part comprises a locking groove 9 arranged on the bean container 2 and a locking protrusion 10 arranged on the fixing base 3, and the locking protrusion 10 is screwed into or out of the locking groove 9 to rotate the bean container 2 to be mounted or dismounted on the fixing base 3; the locking groove 9 is arranged on the periphery of the cup base 17, and two locking grooves 9 are arranged; and the locking protrusion 10 is arranged on the inner ring of the fixing base 3, and two locking protrusions 10 are arranged.

[0039] The locking groove 9 is in an L shape, and comprises a locking slot 11 and an unlocking slot 12, and the locking protrusion 10 is screwed into or out of the locking slot 11 through the unlocking slot 12 to rotate the bean container 2 to be mounted or dismounted on the fixing base 3; when the bean container 2 is mounted, the unlocking slot 12 is aligned with the locking protrusion 10, and then the unlocking slot 12 is sleeved into the locking protrusion 10 downward, and then the bean container 2 is rotated clockwise to make the locking protrusion 10 screwed into the locking slot 11, and at this time, the top rod 4 is just clamped into the positioning groove 6 downward, and the mounting is completed; when the bean container 2 is dismounted, the bean container 2 only needs to be rotated counterclockwise to make the locking protrusion 10 screwed out of the locking slot 11 and rotated to the unlocking slot 12, and at this time, the top rod 4 is moved out of the positioning groove 6, and then the bean container 2 is lifted upward, and the dismounting is completed.

[0040] The locking slot 11 is provided with a first limiting surface 13 on the upper and lower sides, respectively, and the locking protrusion 10 is provided with a second limiting surface 14 on the upper and lower sides, respectively, and the bean container 2 is positioned on the fixing base 3 by the cooperation of the first limiting surface 13 and the second limiting surface 14 (i.e. the first limiting surface 13 and the second limiting surface 14 abut against each other), and then the movement of the bean container 2 upward and downward is limited, and the locking slot 11 is provided with a third limiting surface 15 on one side, and the locking protrusion 10 is provided with a fourth limiting surface 16 on one side, and the bean container 2 is circumferentially positioned on the fixing base 3 by the cooperation of the third limiting surface 15 and the fourth limiting surface 16 (i.e. the third limiting surface 15 and the fourth limiting surface 16 abut against each other), and then the movement (i.e. rotation) of the bean container 2 on the circumference is limited.

[0041] The bean container 2 comprises a cup base 17 and a cup body 18 mounted on the cup base 17, and a sliding door 19 which opens and closes relative to each other is arranged on the cup base 17 in a sliding manner, and an action rib 20 is arranged vertically on the fixing base 3, and an action hole 21 is arranged on the sliding door 19, and the action hole 21 is a counterbore, and a grinding cavity 22 is arranged on the main machine 1, and when the bean container 2 is rotatably mounted on the fixing base 3, the action rib 20 acts on the action hole 21 (the upper end of the action rib 20 extends into the action hole 21), so that the sliding door 19 slides relative to each other to be opened, and then an opening 23 is formed between the sliding door 19, as shown in the drawings, and an inner cavity 24 of the cup body 18 is communicated with the grinding cavity 22 through the opening 23, and then coffee beans in the inner cavity 24 fall into the grinding cavity 22 through the opening 23. Figure 10 ​

[0042] The cup seat 17 is provided with a column 25, and a second elastic member 26 is arranged between the column 25 and the sliding door 19. The second elastic member 26 is a tension spring. When the sliding doors 19 are opened by sliding relative to each other, the second elastic member 26 is stretched. When the bean container 2 is detached from the fixed seat 3 by rotating, the sliding doors 19 are closed by sliding relative to each other under the elastic force of the second elastic member 26, as shown in Figure 11 .

[0043] The sliding door 19 is provided with a hook hole 40. One end of the second elastic member 26 is hooked with the hook hole 40, and the other end of the second elastic member 26 is hooked with the column 25.

[0044] The cup seat 17 is provided with a guide rail 27, and the sliding door 19 is provided with a guide rail groove 28. The sliding door 19 is arranged on the guide rail 27 by linear sliding through the guide rail groove 28.

[0045] The positioning groove 6, the movable hole 8 and the locking groove 9 are arranged on the cup seat 17.

[0046] The main machine 1 is provided with a grinding device. The grinding device includes a motor 29, a lower conical grinding wheel 30 and an upper grinding wheel assembly. The output shaft of the motor 29 is drivingly connected with the lower conical grinding wheel 30. The upper grinding wheel assembly (an upper conical grinding wheel 32) is arranged on the periphery of the lower conical grinding wheel 30. A grinding cavity 22 is arranged on the upper grinding wheel assembly. A grinding gap 31 is arranged between the upper grinding wheel assembly and the lower conical grinding wheel 30. The grinding gap 31 is located at the bottom of the grinding cavity 22 and communicates with the grinding cavity 22. The grinding gap 31 is a channel with too small change in the fineness of coffee powder. When the bean grinder works, the motor 29 drives the lower conical grinding wheel 30 to rotate. The lower conical grinding wheel 30 cooperates with the upper conical grinding wheel 32 to grind coffee beans.

[0047] The upper grinding wheel assembly includes the upper conical grinding wheel 32, a fixed frame 33 and a fixed ring 34. The grinding gap 31 is arranged between the upper conical grinding wheel 32 and the lower conical grinding wheel 30. The main machine 1 is further provided with an adjusting assembly. The adjusting assembly includes a rotating wheel 35 and a rotating ring 36 which are connected with each other. The rotating wheel 35 and the rotating ring 36 are rotatably installed on the main machine 1. The fixed ring 34 is arranged inside the rotating ring 36. A plurality of lugs 37 are annularly arranged on the outer periphery of the fixed ring 34. A threaded portion 38 is arranged on the inner side of the rotating ring 36. The lugs 37 and the threaded portion 38 cooperate with each other. The fixed frame 33 is installed inside the fixed ring 34. The fixed frame 33 and the fixed ring 34 are connected by a screw. The upper conical grinding wheel 32 is installed on the fixed frame 33 by a buckle. The fixed seat 3 is arranged inside the rotating wheel 35 and presses the rotating wheel 35 downward to prevent the rotating wheel 35 from moving upward when it rotates. The fixed seat 3 is fixed on the main machine 1 by a screw. When the rotating wheel 35 rotates, the rotating ring 36 is driven to rotate. The rotating ring 36 drives the fixed ring 34 to move upward and downward. The fixed ring 34 drives the fixed frame 33 and the upper conical grinding wheel 32 to move upward and downward, thereby adjusting the size of the grinding gap 31.

[0048] The outer end of the lug 37 is provided with a convex rib 41, which is inserted into the threaded part 38, and in turn drives the fixed ring 34 to move up and down when the rotating ring 36 rotates by the cooperation of the convex rib 41 and the threaded part 38; the threaded part 38 is a screw thread.

[0049] The rotating wheel 35 is arranged above the rotating ring 36, the bottom of the rotating wheel 35 is annularly provided with a plurality of ribs 42, the top of the rotating ring 36 is provided with a ring of tooth grooves 43, the ribs 42 are inserted into the tooth grooves 43, and the rotating ring 36 is driven to rotate by the cooperation of the ribs 42 and the tooth grooves 43 when the rotating wheel 35 rotates; the outer side of the rotating wheel 35 is provided with a handle 44 for manually rotating the rotating wheel 35.

[0050] The outer side of the fixed seat 3 is annularly provided with a pressing rib 45 for pressing the rotating wheel 35 downward.

[0051] The main machine 1 comprises a shell 46 and an upper cover 47 covering the top of the shell 46, and the bean container 2 is arranged above the upper cover 47.

[0052] The above is the preferred scheme of the utility model, which displays and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above examples, and the above examples and the description in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A bean container locking structure of a bean grinder, comprising a main machine (1) and a bean container (2), characterized in that: The host (1) is provided with a fixing base (3), a rotating locking mounting part is arranged between the bean loading container (2) and the fixing base (3), the bean loading container (2) is rotatably mounted on the fixing base (3) through the rotating locking mounting part, and the bean loading container (2) is positioned on the fixing base (3) in the up-down direction and in the circumferential direction through the rotating locking mounting part, the bean loading container (2) is provided with an elastic positioning assembly, the fixing base (3) is provided with a positioning part, and the positioning assembly is elastically clamped into the positioning part, so that the bean loading container (2) is limited from being reversely rotated on the fixing base (3).

2. The bean container locking structure of the bean mill according to claim 1, characterized in that: The positioning assembly comprises a top rod (4) and a first elastic member (5), the positioning part is a positioning groove (6), the first elastic member (5) is arranged between the bean loading container (2) and the top rod (4), and the positioning groove (6) is provided with an up-down inclined side wall (7); when the bean loading container (2) is mounted on the fixing base (3), the top rod (4) is clamped into the positioning groove (6) under the elastic force of the first elastic member (5); when the bean loading container (2) is rotated and dismounted on the fixing base (3), the top rod (4) moves upward under the action of the side wall (7), so as to compress the first elastic member (5), and then the top rod (4) moves out of the positioning groove (6).

3. The bean container locking structure of the bean mill according to claim 2, characterized in that: The bean loading container (2) is provided with a movable hole (8), the top rod (4) is movably arranged on the movable hole (8) in the up-down direction, the first elastic member (5) is arranged in the movable hole (8), one end of the first elastic member (5) abuts against the bottom wall of the movable hole (8), and the other end of the first elastic member (5) is connected with the top rod (4).

4. The bean container locking structure of the bean mill according to claim 1, characterized by: The rotating locking mounting part comprises a locking groove (9) arranged on the bean loading container (2) and a locking protrusion (10) arranged on the fixing base (3), the locking protrusion (10) is screwed into or out of the locking groove (9), so that the bean loading container (2) is rotatably mounted on the fixing base (3).

5. The bean container locking structure of the bean mill according to claim 4, characterized in that: The locking groove (9) is in an L shape, and comprises a locking slot (11) and an unlocking slot (12); the locking protrusion (10) is screwed into or out of the locking slot (11) through the unlocking slot (12); the locking slot (11) is provided with a first limiting surface (13) on each of the upper side and the lower side; the locking protrusion (10) is provided with a second limiting surface (14) on each of the upper side and the lower side; the bean loading container (2) is positioned on the fixing base (3) in the up-down direction through cooperation of the first limiting surface (13) and the second limiting surface (14); the locking slot (11) is provided with a third limiting surface (15) on one side; the locking protrusion (10) is provided with a fourth limiting surface (16) on one side; and the bean loading container (2) is positioned on the fixing base (3) in the circumferential direction through cooperation of the third limiting surface (15) and the fourth limiting surface (16).

6. The bean container locking structure of the bean mill according to claim 1, characterized by: The bean container (2) comprises a cup seat (17) and a cup body (18) mounted on the cup seat (17), the cup seat (17) is provided with sliding doors (19) which are opened and closed to each other, the fixed seat (3) is provided with an acting rib (20), the sliding doors (19) are provided with acting holes (21), the main machine (1) is provided with a grinding cavity (22), when the bean container (2) is rotatably mounted on the fixed seat (3), the acting rib (20) acts on the acting hole (21) to make the sliding doors (19) slide to open each other, and then an opening (23) is formed between the sliding doors (19), and the inner cavity (24) of the cup body (18) is communicated with the grinding cavity (22) through the opening (23).

7. The bean container locking structure of the bean mill according to claim 6, characterized by: The cup seat (17) is provided with a column (25), and the column (25) and the sliding doors (19) are provided with a second elastic element (26), the second elastic element (26) is stretched when the sliding doors (19) are opened, and when the bean container (2) is rotatably dismounted on the fixed seat (3), the sliding doors (19) are closed to each other under the elastic force of the second elastic element (26).

8. The bean container locking structure of the bean mill according to claim 7, characterized by: The cup seat (17) is provided with a guide rail (27), and the sliding doors (19) are provided with guide rail grooves (28), the sliding doors (19) are linearly slidably arranged on the guide rail (27) through the guide rail grooves (28).

9. The bean container locking structure of the bean mill according to claim 6, characterized by: The main machine (1) is provided with a grinding device, the grinding device comprises a motor (29), a lower conical grinding wheel (30) and an upper grinding wheel assembly, the output shaft of the motor (29) is drivingly connected with the lower conical grinding wheel (30), the upper grinding wheel assembly is arranged on the periphery of the lower conical grinding wheel (30), the grinding cavity (22) is arranged on the upper grinding wheel assembly, and a grinding gap (31) is arranged between the upper grinding wheel assembly and the lower conical grinding wheel (30), the grinding gap (31) is located at the bottom of the grinding cavity (22) and communicates with the grinding cavity (22).

10. The bean container locking structure of the bean mill according to claim 9, characterized by: The upper grinding wheel assembly comprises an upper conical grinding wheel (32), a fixing frame (33) and a fixing ring (34), the grinding gap (31) is arranged between the upper conical grinding wheel (32) and the lower conical grinding wheel (30), the main machine (1) is further provided with an adjusting assembly, the adjusting assembly comprises a rotating wheel (35) and a rotating ring (36) which are connected with each other, the rotating wheel (35) and the rotating ring (36) are rotatably arranged on the main machine (1), the fixing ring (34) is arranged in the interior of the rotating ring (36), a plurality of lugs (37) are annularly arranged on the periphery of the fixing ring (34), a threaded portion (38) is arranged on the inner side of the rotating ring (36), the lugs (37) and the threaded portion (38) are matched with each other, the fixing frame (33) is arranged in the interior of the fixing ring (34), the upper conical grinding wheel (32) is arranged on the fixing frame (33), the fixed seat (3) is arranged in the interior of the rotating wheel (35), and the fixed seat (3) presses the rotating wheel (35) downward; when the rotating wheel (35) rotates, the rotating ring (36) is driven to rotate, the rotating ring (36) drives the fixing ring (34) to move up and down, and then the fixing ring (34) drives the fixing frame (33) and the upper conical grinding wheel (32) to move up and down, so that the size of the grinding gap (31) is adjusted.

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