Tea grinding device

Abstract

The utility model provides a tea leaf grinding device, which comprises a cutter assembly, a grinding assembly and a grinding assembly, wherein the cutter assembly comprises a movable cutter, a fixed cutter and a grinding cavity; the material box is used for containing tea leaves, and the material box comprises a discharging opening communicated with the grinding cavity; the feeding piece extends into the material box from the discharging port of the material box, the feeding piece comprises a rod body and stirring blades arranged on the circumferential surface of the rod body, and the feeding piece is used for conveying tea leaves at the discharging port into the grinding cavity; the driving assembly comprises a motor and an output shaft in transmission connection with the motor, a rotating shaft of the motor and the output shaft are in different planes or parallel, the movable cutter and the feeding piece are both connected to the output shaft, and the motor rotates to drive the output shaft to rotate and simultaneously drive the movable cutter and the feeding piece to rotate. The rotating center of the movable cutter, the rotating center of the feeding piece and the rotating center of the output shaft are collinear.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding, in particular to a tea grinding device. Background Art

[0002] When the existing grinding device grinds tea leaves, the tea leaves are easily accumulated at the discharge port due to their low density and light weight. In particular, the strip-shaped tea leaves are easy to cross and stagnate at the discharge port due to their long length, requiring manual assistance from the user, resulting in a poor user experience when using the grinding device. Utility Model Content

[0003] The utility model aims to provide a tea grinding device which can automatically transfer tea leaves in a material box to a grinding chamber of a cutter for grinding.

[0004] The tea leaf grinding device provided by one embodiment of the utility model comprises:

[0005] A tool assembly, comprising a movable tool, a fixed tool and a grinding chamber;

[0006] A material box, used to contain tea leaves, the material box comprising a material outlet communicated with the grinding chamber;

[0007] A feeding piece, extending from the discharge port of the material box into the material box, the feeding piece comprises a rod body and a paddle arranged on the circumference of the rod body, and the feeding piece is used to transfer the tea leaves at the discharge port to the grinding chamber;

[0008] A drive assembly, the drive assembly includes a motor and an output shaft connected to the motor, the rotating shaft of the motor is skewed or parallel to the output shaft, the movable tool and the feeding piece are both connected to the output shaft, the motor rotates to drive the output shaft to rotate and simultaneously drives the movable tool and the feeding piece to rotate, and the rotation centers of the movable tool, the feeding piece and the output shaft are collinear.

[0009] As a further improvement of one embodiment of the utility model, the movable tool fixing seat is fixedly sleeved on the output shaft, the feeding piece is located at the upper part of the movable tool fixing seat, the lower end of the feeding piece is sleeved on the upper end of the output shaft, and a radial limiting structure that cooperates with each other is arranged between the feeding piece and the movable tool fixing seat, a screw hole is arranged at the upper end of the output shaft, the rod body is hollow, the upper end of the rod body is open, and a fixing hole corresponding to the screw hole is arranged at the lower end, the feeding piece is fixed to the output shaft by screws and limits the axial movement of the output shaft relative to the movable tool fixing seat, and a sealing cover is arranged at the upper end of the rod body to close the upper end opening.

[0010] As a further improvement of an embodiment of the utility model, the rotation axis of the feeding piece is colinear with the center line of the material box, the material box has a tapered portion, the tapered portion tapers from top to bottom, the discharge port is arranged at the lower end of the tapered portion, and the angle between the side wall of the tapered portion and the center axis of the material box is less than or equal to 50°; the material box also has a square portion located at the upper part of the tapered portion, the tapered portion tapers from top to bottom to be circular, and the discharge port is arranged at the lower end of the tapered portion; an arc-shaped transition surface is arranged between the square portion and the tapered portion.

[0011] As a further improvement of one embodiment of the utility model, the lower end of the inner wall of the material box is provided with two protrusions protruding into the interior of the material box, and the two protrusions are symmetrically arranged at the same height in the up and down directions. The tea grinding device also includes an optical detection component for detecting the amount of tea in the material box, and the optical detection component includes a transmitting end and a receiving end respectively arranged on the two protrusions.

[0012] As a further improvement of an embodiment of the utility model, the paddle has a radial length in the radial direction of the feeding piece, and the radial length decreases from the upper end to the lower end of the feeding piece.

[0013] As a further improvement of one embodiment of the utility model, the rotation axis of the feeding piece is colinear with the center line of the material box, the material box has a tapered portion, the tapered portion gradually shrinks from top to bottom, the discharge port is arranged at the lower end of the tapered portion, and the distance between the upper blade and the side wall of the tapered portion is greater than the distance between the lower blade and the side wall of the tapered portion.

[0014] As a further improvement of an embodiment of the utility model, at least two rows of blades are arranged in the axial direction of the feeding member, and the at least two rows of blades are arranged in a staggered manner.

[0015] As a further improvement of one embodiment of the utility model, the blades include two upper row blades symmetrically arranged along the circumference of the rod body and two lower row blades symmetrically arranged along the circumference of the rod body, and the symmetry line A1 of the two upper row blades is perpendicular to the symmetry line A2 of the two lower row blades.

[0016] As a further improvement of an embodiment of the utility model, the paddle further includes an inclined transition wall connecting the free end and the rod body, and in the horizontal direction, the transition wall is arranged on both sides of the paddle.

[0017] As a further improvement of an embodiment of the utility model, the blade is a spiral blade, and the outer diameter of the spiral blade decreases from top to bottom.

[0018] The tea grinding device provided by the utility model has a feeding piece at the discharge port of the material box for automatically conveying tea leaves without manual assistance from the user, and only one driving mechanism is provided to simultaneously drive the feeding piece and the movable cutter. The overall structure is simple and compact and occupies little space. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a three-dimensional schematic diagram of a tea grinding device according to one embodiment of the utility model;

[0020] Figure 2 for Figure 1 Another perspective schematic diagram of the tea grinding device shown;

[0021] Figure 3 for Figure 2 A three-dimensional schematic diagram of a tea grinding device with some components hidden;

[0022] Figure 4 for Figure 1 A schematic cross-sectional view of a tea leaf grinding device is shown;

[0023] Figure 5 for Figure 1 A three-dimensional schematic diagram of a feeding member of a tea grinding device is shown;

[0024] Figure 6 for Figure 5 A top view of the feed piece shown;

[0025] Figure 7 for Figure 3 A schematic diagram of a movable cutter fixing seat of a tea grinding device shown;

[0026] Figure 8 for Figure 1 Schematic diagram of a material box of a tea grinding device shown. DETAILED DESCRIPTION

[0027] The following detailed description refers to the drawings that form a part of this specification. The illustrative embodiments mentioned in the specification and the drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present application. Under the enlightenment of the present application, those skilled in the art will understand that many other embodiments can be adopted, and various changes can be made to the described embodiments without departing from the main purpose and scope of protection of the utility model. It should be understood that the various aspects of the present application described and illustrated herein can be arranged, replaced, combined, separated and designed according to many different configurations, and these different configurations are within the scope of protection of the present application.

[0028] See also Figure 1 The utility model provides a tea leaf grinding device, which is used for grinding tea leaves into tea powder for subsequent use.

[0029] See also Figures 1 to 4 The tea grinding device provided by the utility model includes a cutter assembly 10, a material box 20 and a driving assembly 40.

[0030] The tool assembly 10 includes a movable tool 11, a fixed tool 12 and a grinding chamber 13. The driving assembly 40 is used to drive the movable tool 11 to rotate. The material box 20 is used to contain tea leaves, and the material box 20 includes a discharge port 23 connected to the grinding chamber 13, and the tea leaves in the material box 20 can enter the grinding chamber 13 through the discharge port 23.

[0031] In one embodiment of the utility model, the movable cutter 11 and the fixed cutter 12 can both be annular, the cavity in the middle forms a grinding chamber 13, a tea drop channel is provided between the discharge port 23 of the material box 20 and the grinding chamber 13, and the tea leaves in the material box 20 enter the grinding chamber 13 from the discharge port 23 through the tea drop channel. The cutter assembly 10 can be a conical cutter assembly or a disc cutter assembly, and the opposite surfaces of the movable cutter 11 and the fixed cutter 12 are provided with grinding teeth, and the movable cutter 11 can rotate relative to the fixed cutter 12 to grind the tea leaves in the grinding chamber 13 into tea powder. The tea grinding device is also provided with a powder outlet, and the tea powder ground by the cutter assembly 10 can be discharged from the powder outlet.

[0032] The tea leaf grinding device further comprises a feeding member 30, which extends from the discharge port 23 of the material box 20 into the material box 20. Figure 5 , Figure 6 The feeding member 30 includes a rod body 31 and a paddle 32 arranged on the circumference of the rod body 31 . The feeding member 30 is used to transfer the tea leaves at the discharge port 23 to the grinding chamber 13 .

[0033] See again Figure 1 , Figure 2 The driving assembly 40 includes a motor 41 and an output shaft 44 which is transmission-connected to the motor 41, wherein the rotating shaft of the motor 41 is skewed or parallel to the output shaft 44, the movable tool 11 and the feeding piece 30 are both connected to the output shaft 44, the motor 41 drives the output shaft 44 to rotate and simultaneously drives the movable tool 11 and the feeding piece 30 to rotate, and the rotation centers of the movable tool 11, the feeding piece 30 and the output shaft 44 are collinear.

[0034] In this embodiment, a driving assembly 40 is provided to simultaneously drive the moving tool 11 and the feeding member 30 to rotate synchronously without providing an additional driving unit, thereby improving space utilization and reducing production costs.

[0035] At the same time, the rotating shaft of the motor 41 is not colinear with the output shaft 44. Preferably, the rotating shaft of the motor 41 and the output shaft 44 are arranged vertically, the rotating shaft of the motor 41 is connected to the worm 42, the worm 42 is meshed with the bevel gear 43, and the output shaft 44 is fixedly connected to the bevel gear 43, such as the output shaft 44 can be connected to the bevel gear 43 through a pin, so that the rotation of the bevel gear 43 can drive the output shaft 44 to rotate. The motor 41 is placed horizontally on one side and below the material box 20, taking up little space and having a compact overall structure.

[0036] For further information, see Figures 3 to 6 In one embodiment of the utility model, the tool assembly 10 also includes a movable tool fixing seat 14, the movable tool 11 and the feeding piece 30 are both fixedly connected to the movable tool fixing seat 14, and the movable tool fixing seat 14 is fixedly connected to the output shaft 44. When the motor 41 drives the output shaft 44 to rotate, the output shaft 44 drives the tool fixing seat 14 to rotate, and the movable tool fixing seat 14 simultaneously drives the movable tool 11 and the feeding piece 30 to rotate.

[0037] In this embodiment, the direction of the rotation axis of the feed piece 30 can be defined as the up and down direction, with the side close to the material box 20 being the top and the side away from the material box 20 being the bottom. The movable tool fixing seat 14 is fixedly sleeved on the output shaft 44, the feed piece 30 is located on the upper part of the movable tool fixing seat 14, the lower end of the feed piece 30 is sleeved on the upper end of the output shaft 44, and a radial limiting structure 33 that cooperates with each other is provided between the feed piece 30 and the movable tool fixing seat 14, the upper end of the output shaft 44 can be provided with a screw hole, the rod body 31 is hollow, the upper end of the rod body 31 is open, and the lower end is provided with a fixing hole corresponding to the screw hole, the feed piece 30 is fixed to the output shaft 44 by a screw 45 and limits the output shaft 44 from moving axially relative to the movable tool fixing seat 14, and the upper end of the rod body 31 is provided with a sealing cover 34 that closes the upper end opening.

[0038] Among them, the radial limiting structure 33 can limit the radial rotation of the feeding piece 30 relative to the moving tool fixing seat 14. The radial limiting structure 33 can include a rib protruding from the lower end of the rod body 31 of the feeding piece 30 and a limiting groove arranged on the moving tool fixing seat 14. The rib is inserted into the limiting groove to limit the radial rotation of the feeding piece 30 relative to the moving tool fixing seat 14.

[0039] During the installation process, the movable tool fixing seat 14 can be sleeved on the output shaft 44 first, and a radial matching structure 33 is provided between the movable tool fixing seat 14 and the output shaft 44 to limit the radial rotation of the movable tool fixing seat 14 relative to the output shaft 44. Then, after the feeding piece 30 is sleeved on the end of the output shaft 44, a screw 45 is inserted into the output shaft 44 and connected to the screw hole through the fixing hole, so that the feeding piece 30 is fixed to the output shaft 44 and the axial movement of the feeding piece 30 relative to the movable tool fixing seat 14 can be limited. After the feeding piece 30 is fixed, the upper end opening of the rod body 31 can be closed with a sealing cover 34 to prevent tea leaves and dust from falling into the rod body 31, and also facilitate subsequent maintenance.

[0040] For further information, see Figure 3 and Figure 8 In one embodiment of the utility model, the rotation axis of the feeding member 30 is colinear with the center line of the material box 20, the material box 20 has a tapered portion 21, the tapered portion 21 gradually shrinks from top to bottom, the discharge port 23 is arranged at the lower end of the tapered portion 21, and the angle between the side wall of the tapered portion 21 and the center axis of the material box 20 is less than or equal to 50°.

[0041] In this embodiment, the center line of the material box 20, that is, the center line of the tapered portion 21, that is, the center line of the discharge port 23 is colinear with the rotation axis of the feeding piece 30. During use, the tea leaves will automatically slide to the discharge port 23 along the inclined side wall of the tapered portion 21 under the action of gravity, and be transported to the grinding chamber 13 under the action of the feeding piece 30. In this way, the grinding efficiency can be improved and tea leaves can be avoided from remaining in the material box 20 without the need for manual assistance by the user.

[0042] Further, in one embodiment of the utility model, the material box 20 also includes a square portion 22, the square portion 22 is located above the conical portion 21, the cross section of the square portion 22 on the horizontal plane is square, and the conical portion 21 gradually shrinks from top to bottom into a circle, forming a circular discharge port 23 to cooperate with the grinding chamber. The volume in the material box 20 can be increased by providing the square portion 22. An arc-shaped transition surface can be provided between the square portion 22 and the conical portion 21, so that the tea leaves in the material box 20 can slide more smoothly to the discharge port 23 at the bottom of the conical portion 21 under the action of gravity, avoiding the residue of tea leaves in the material box 20.

[0043] The lower end of the inner wall of the material box 20 is provided with two protrusions 24 protruding into the material box 20, and the two protrusions 24 are symmetrically arranged, and the two protrusions 24 are at the same height in the vertical direction. The tea grinding device also includes an optical detection component for detecting the amount of tea in the material box 20, and the optical detection component includes a transmitting end and a receiving end respectively arranged on the two protrusions 24.

[0044] Specifically, two protrusions 24 are arranged on the inner wall of the conical portion 21 near one end of the discharge port, and the protrusions 24 protrude into the interior of the material box 20. By symmetrically arranging the two protrusions 24, it can be ensured that the transmitting end and the receiving end of the optical detection component are parallel, so as to accurately detect the amount of tea in the material box 20.

[0045] Specifically, the optical detection element can be used to detect whether the tea leaves in the material box 20 are less than a preset amount. When the tea leaves in the material box 20 are less than the preset amount, a prompt can be issued.

[0046] For further information, see Figure 5 , Figure 6 In one embodiment of the utility model, the blade 32 of the feeding member 30 has a radial length in the radial direction of the feeding member 30, and the radial length of the blade 32 decreases from the upper end to the lower end of the feeding member 30. It can be understood that in this embodiment, the radial length of the blade 32 at the upper end is greater than the radial length of the blade 32 at the lower end.

[0047] When the grinding device is used to grind tea leaves, there are more tea leaves at the top and fewer tea leaves at the bottom. Therefore, the use of the blades 32 with a longer radial length at the top can enhance the stirring force, while the use of the blades 32 with a shorter radial length at the bottom will not hinder the tea leaves from entering the grinding chamber 13 from the discharge port 23. In addition, during the rotation process, the blades 32 at the top can exert downward pressure on the tea leaves, making it easier for the tea leaves to enter the grinding chamber 13 of the tool assembly 10 for grinding.

[0048] Further, in one embodiment of the utility model, the distance between the upper blade 32 and the side wall of the tapered portion 21 of the material box 20 is greater than the distance between the upper blade 32 and the side wall of the tapered portion 21. It can be understood that the space for accommodating tea leaves between the free end of the upper blade 32 and the side wall of the material box 20 is greater than the space for accommodating tea leaves between the free end of the upper blade 32 and the side wall of the material box 20. During the grinding process, the blade 32 can coarsely crush the tea leaves and at the same time, can guide the tea leaves so that the tea leaves can smoothly enter the grinding chamber 13.

[0049] In one embodiment of the utility model, at least two rows of paddles 32 are arranged in the axial direction of the feeding member 30, and at least two rows of paddles 32 are staggered. In this way, the number of paddles 32 can be reduced while ensuring the tea dropping efficiency, thereby reducing the space occupied by the paddles 32 and increasing the volume of the material box 20 that can accommodate tea leaves.

[0050] See Figure 5 , Figure 6, is a top view of the feeding member 30, the blades include two upper-row blades 321 symmetrically arranged along the circumference of the rod body 31 and two lower-row blades 322 symmetrically arranged along the circumference of the rod body 31, and the symmetry line A1 of the two upper-row blades 321 is perpendicular to the symmetry line A2 of the two lower-row blades 322. The symmetry line of the two upper-row blades is perpendicular to the symmetry line of the two lower-row blades. The radial length L1 of the upper-row blades 321 is greater than the radial length L2 of the lower-row blades 322. In this way, by setting two rows of blades 32 to cover 360° during the rotation process, a better tea leaf conveying effect can be achieved with fewer blades 32.

[0051] In this embodiment, the paddle 32 further includes an inclined transition wall 35 connecting the free end and the rod body 31, and in the horizontal direction, the transition wall 35 is arranged on both sides of the paddle 32. The length of the transition wall 35 may be 1.5 times the radial length of the paddle 32. The transition wall 35 can prevent tea leaves from splashing due to excessive rotation speed.

[0052] In another embodiment of the present invention, the blade 32 is a spiral blade, and the outer diameter of the spiral blade decreases from top to bottom, so that the tea leaves can be guided into the grinding chamber 13 and coarsely crushed.

[0053] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0054] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the utility model. They are not intended to limit the protection scope of the utility model. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A tea grinding device, characterized in that: include: A tool assembly, comprising a movable tool, a fixed tool and a grinding chamber; A material box, used to contain tea leaves, the material box comprising a material outlet communicated with the grinding chamber; A feeding piece, extending from the discharge port of the material box into the material box, the feeding piece comprises a rod body and a paddle arranged on the circumference of the rod body, and the feeding piece is used to transfer the tea leaves at the discharge port to the grinding chamber; A drive assembly, the drive assembly includes a motor and an output shaft connected to the motor, the rotating shaft of the motor is skewed or parallel to the output shaft, the movable tool and the feeding piece are both connected to the output shaft, the motor rotates to drive the output shaft to rotate and simultaneously drives the movable tool and the feeding piece to rotate, and the rotation centers of the movable tool, the feeding piece and the output shaft are collinear.

2. The tea grinding device according to claim 1, characterized in that: The movable tool fixing seat is fixedly sleeved on the output shaft, the feeding piece is located at the upper part of the movable tool fixing seat, the lower end of the feeding piece is sleeved on the upper end of the output shaft, and a radial limiting structure that cooperates with each other is arranged between the feeding piece and the movable tool fixing seat, a screw hole is arranged at the upper end of the output shaft, the rod body is hollow, the upper end of the rod body is open, and a fixing hole corresponding to the screw hole is arranged at the lower end, the feeding piece is fixed to the output shaft by screws and limits the axial movement of the output shaft relative to the movable tool fixing seat, and a sealing cover is arranged at the upper end of the rod body to close the upper end opening.

3. The tea grinding device according to claim 1, characterized in that: The rotation axis of the feeding member is colinear with the center line of the material box, the material box has a tapered portion, the tapered portion tapers from top to bottom, the discharge port is arranged at the lower end of the tapered portion, and the angle between the side wall of the tapered portion and the center axis of the material box is less than or equal to 50°; the material box also has a square portion located at the upper part of the tapered portion, the tapered portion tapers from top to bottom to be circular, and the discharge port is arranged at the lower end of the tapered portion; an arc-shaped transition surface is arranged between the square portion and the tapered portion.

4. The tea grinding device according to claim 1, characterized in that: The lower end of the inner wall of the material box is provided with two protrusions protruding into the interior of the material box, the two protrusions are symmetrically arranged, and the two protrusions are at the same height in the up and down directions. The tea grinding device also includes an optical detection component for detecting the amount of tea in the material box, and the optical detection component includes a transmitting end and a receiving end respectively arranged on the two protrusions.

5. The tea grinding device according to claim 1, characterized in that: The paddle has a radial length in the radial direction of the feeding member, and the radial length decreases from the upper end to the lower end of the feeding member.

6. The tea grinding device according to claim 5, characterized in that: The rotation axis of the feeding piece is colinear with the center line of the material box, the material box has a tapered portion, the tapered portion gradually shrinks from top to bottom, the discharge port is arranged at the lower end of the tapered portion, and the distance between the upper blade and the side wall of the tapered portion is greater than the distance between the lower blade and the side wall of the tapered portion.

7. The tea grinding device according to claim 5, characterized in that: At least two rows of blades are arranged in the axial direction of the feeding member, and the at least two rows of blades are arranged in a staggered manner.

8. The tea grinding device according to claim 7, characterized in that: The shifting blades include two upper-row shifting blades symmetrically arranged along the circumference of the rod body and two lower-row shifting blades symmetrically arranged along the circumference of the rod body. The symmetry line A1 of the two upper-row shifting blades is perpendicular to the symmetry line A2 of the two lower-row shifting blades.

9. The tea grinding device according to claim 8, characterized in that: The paddle further comprises an inclined transition wall connecting the free end and the rod body. In the horizontal direction, the transition wall is arranged on both sides of the paddle.

10. The tea grinding device according to claim 5, characterized in that: The blade is a spiral blade, and the outer diameter of the spiral blade decreases from top to bottom.

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