Matcha production grinder

Abstract

The present application relates to the technical field of grinding and crushing devices, and discloses a matcha production grinder, comprising a base, a grinding cylinder, an outer cylinder, a rotation driving mechanism, and a cooling mechanism, wherein the grinding cylinder is movably connected to the base; the rotation driving mechanism is used for driving the grinding cylinder to rotate around the axis of the grinding cylinder; one port of the grinding cylinder is detachably provided with an end cover; a plurality of protruding ribs are fixed on the inner peripheral surface of the grinding cylinder; a plurality of grinding bodies are placed in the grinding cylinder; the outer cylinder is rotatably sleeved on the outer side of the grinding cylinder; the cooling mechanism comprises a circulating inlet pipe, a circulating outlet pipe, two rotating joints, a plurality of annular heat exchange pipes, and branch pipes, the annular heat exchange pipes are coaxially sleeved on the outer side of the grinding cylinder, the annular heat exchange pipes are axially arranged at equal intervals, the branch pipes are embedded in the outer peripheral surface of the grinding cylinder, and each branch pipe is communicated with two corresponding adjacent annular heat exchange pipes. The present application can reduce the loss of theanine of matcha so as to keep the fresh and refreshing taste.

Description

A matcha grinder Technical Field

[0001] This application belongs to the technical field of grinding and pulverizing equipment, and relates to a matcha grinder. Background Technology

[0002] A matcha grinder is a device that uses grinding media to pulverize tea leaves under the action of inertia, centrifugal force, and friction.

[0003] However, the heat generated by the collision during the grinding process will cause the tea leaves to reach a higher temperature, which will accelerate the decomposition and metabolism of theanine, thus affecting the freshness of matcha. Summary of the Invention

[0004] To address the problem of excessive theanine loss in existing grinding methods, a matcha grinder is provided.

[0005] This application provides a matcha grinder, which is implemented using the following technical solution:

[0006] A matcha grinder includes a grinding cylinder, a base, an outer cylinder, a rotation drive mechanism, and a cooling mechanism. The grinding cylinder is movably connected to the base. The rotation drive mechanism drives the grinding cylinder to rotate around its own axis. One end of the grinding cylinder is detachably fitted with an end cap. Multiple protruding ribs are fixed on the inner circumferential surface of the grinding cylinder, and multiple grinding media are placed inside the grinding cylinder. The outer cylinder is rotatably sleeved on the outside of the grinding cylinder. The cooling mechanism includes a circulation inlet pipe, a circulation outlet pipe, two rotating joints, multiple annular heat exchange tubes, and branch pipes. The annular heat exchange tubes are coaxially sleeved on the outside of the grinding cylinder, and are axially equidistantly spaced. The branch pipes are embedded in the outer circumferential surface of the grinding cylinder and connect to two adjacent annular heat exchange tubes. The two rotating joints are rotatably connected to both ends of the grinding cylinder, and are connected to adjacent annular heat exchange tubes via the branch pipes. The circulation inlet pipe is connected to one of the rotating joints, and the circulation outlet pipe is connected to the other rotating joint.

[0007] Optionally, the grinding body includes a steel rod and a ceramic sleeve, the ceramic sleeve being fitted over the outside of the steel rod, and the end of the ceramic sleeve being provided with a ball cap, the ball cap having a movable gap with the inner end face of the grinding cylinder.

[0008] Optionally, the grinding body includes a steel pipe and multiple ceramic balls. The end of the steel pipe is provided with a ball cap, and there is a movable gap between the ball cap and the inner end face of the grinding cylinder. The steel pipe is densely covered with mounting holes, and two adjacent mounting holes are staggered along the circumference of the steel pipe. The ceramic balls are embedded in the mounting holes, and the diameter of the ceramic balls is larger than the diameter of the mounting holes.

[0009] Optionally, it also includes a capture mechanism and a release mechanism. The axial gap between two adjacent annular heat exchange tubes is set as a cooling channel. The grinding body is a grinding ball, and the grinding balls are set in two sets. One set of grinding balls is located inside the grinding cylinder, and the other set of grinding balls is located in the cooling channel. The cylinder wall of the grinding cylinder is provided with through holes and cover plates for opening and closing the through holes. Each through hole is connected to each cooling channel. The capture mechanism is used to capture and collect the grinding balls in the horizontal throwing state and evenly disperse the grinding balls into each cooling channel. The release mechanism is used to evenly release the grinding balls in the cooling channel to each axial position inside the grinding cylinder.

[0010] Optionally, the lower side of the cover plate is hinged to the wall of the through hole, and a first torsion spring is provided at the hinge point to force the cover plate to close the through hole; the release mechanism includes multiple first slide bars, multiple second slide bars, and two sets of fixing sleeves. One end of the fixing sleeve is fixed to the outer circumference of the grinding cylinder, and the fixing sleeve is connected to the cooling channel. The fixing sleeves extend radially along the grinding cylinder, and each fixing sleeve is equidistantly arranged along the axial direction of the grinding cylinder. The included angle between the axes of the two sets of fixing sleeves is 90°; the first slide bar is slidably connected to one set of fixing sleeves, and the second slide bar is slidably connected to the other set of fixing sleeves. The middle of the first slide bar is provided with a through hole for the grinding ball to pass through. The first slide bar has a first opening portion at the end furthest from the fixed sleeve. When the first opening portion is in the cooling channel, it blocks the cooling channel. When the first opening portion slides through the through hole, it abuts against the cover plate to force the cover plate to flip and open the through hole. The middle part of the second slide bar is a guide portion, and the end furthest from the fixed sleeve is a second opening portion. When the second opening portion is in the cooling channel, it blocks the cooling channel. When the second opening portion slides through the through hole, it abuts against the cover plate to force the cover plate to flip and open the through hole. The guide portion is in the cooling channel to guide the falling grinding balls in the cooling channel through the through hole and into the inner cavity of the grinding cylinder.

[0011] Optionally, the bottom of the grinding cylinder is rotatably provided with a base plate, which remains fixed. A strip-shaped hole is opened through the base plate, and the strip-shaped hole is horizontally positioned and higher than the axis of the grinding cylinder. The capturing mechanism includes a slider, a shielding strip, a rotating shaft, a mesh plate, a rotation drive assembly, a linear drive assembly, and an opening and closing assembly. The slider is slidably connected to the strip-shaped hole along the length of the strip-shaped hole. The rotating shaft rotates through the slider. The rotation drive assembly is used to drive the rotating shaft to rotate, and the linear drive assembly is used to drive the slider to slide. The middle part of the mesh plate is fixed to the rotating shaft. The mesh plate is divided into a distribution part and a collection part with the rotating shaft as the dividing line. The middle part of the collection part is bent downward, and the distribution part is planar. The distribution part has multiple narrowing grooves on the side away from the collection part, and each narrowing groove corresponds to one of the through holes. The opening and closing assembly is used to open and close the outlet of the narrowing groove.

[0012] Optionally, the opening and closing assembly includes a first rod, a transmission rod, a second rod, a hinge rod, and a spring. The upper opening of the narrowing groove is provided with a first sliding groove, and the side opening of the narrowing groove for the passing of the grinding ball is provided with a second sliding groove. The first and second sliding grooves are connected. The end of the first rod slides along the first sliding groove, one end of the transmission rod is fixed to the first rod, and the spring is used to force the first rod to slide towards the side opening of the narrowing groove. The end of the second rod slides along the second sliding groove, and both ends of the hinge rod are hinged to the middle of the first and second rods, respectively. When the linear drive assembly drives the mesh plate to move towards the through hole, the free end of the transmission rod abuts against the inner peripheral wall of the grinding cylinder, and the first rod slides away from the side opening.

[0013] Optionally, the release mechanism further includes a guide plate and a traction rope. The guide plate is curved and located directly above the guide portion. The middle part of the guide plate is hinged to the guide portion. A second torsion spring is provided at the hinge. The end of the guide plate near the axis of the grinding cylinder is designated as the release end, and the end of the guide plate away from the axis of the grinding cylinder is designated as the abutment end. The elastic force of the second torsion spring is used to force the release end of the guide plate to move upward. The abutment end abuts against the inner circumferential surface of the outer cylinder. The traction rope passes through the second slide bar. One end of the traction rope is fixed to the release end of the guide plate. The release end of the guide plate is deflected downward by the pulling of the traction rope.

[0014] Optionally, an annular chamber is provided between the ceramic sleeve and the steel rod, and an annular airbag is placed in the annular chamber. The annular airbag contains high-pressure air, and the inner and outer diameters of the annular airbag abut against the steel rod and the ceramic sleeve, respectively.

[0015] Optionally, the steel pipe is provided with a cylindrical bladder filled with water, and the outer circumferential surface of the bladder abuts against the inner circumferential surface of the steel pipe and part of the spherical surface of the ceramic ball; the ball cap is threaded to the end of the steel pipe, and a compression spring is fixed to the ball cap. A circular pressure plate is fixed to the end of the compression spring, and the pressure plate is axially slidably connected to the inner cavity of the steel pipe. The elastic force of the compression spring forces the pressure plate to squeeze the end of the bladder.

[0016] The beneficial effects of this application are:

[0017] 1. By setting up a cooling mechanism to remove the heat from the grinding cylinder, the temperature of the tea leaves is lowered, and the decomposition of theanine is slowed down, thereby maintaining the freshness of matcha.

[0018] 2. By setting up rod-shaped grinding media and combining them with convex ribs, the axis of the grinding media is parallel to the axis of the grinding cylinder. This ensures that adjacent grinding media are in line contact during the flat polishing or collision process, resulting in a significant contact effect and greatly improving grinding efficiency. At the same time, the collision position is more controllable, thereby improving the uniformity of collision crushing.

[0019] 3. By setting up a capture mechanism and a release mechanism, the grinding balls in the cooling channel and the grinding balls in the grinding cylinder can be interchanged. That is, one set of grinding balls is in the state of grinding and crushing tea leaves, while the other set of grinding balls is in the cooling state. When the grinding balls that are crushing tea leaves are heated up due to long-term collision, the grinding balls in the cooling state are interchanged. This not only reduces the temperature rise due to collision, but also further cools the tea leaves, thereby preserving theanine. Attached Figure Description

[0020] Figure 1 is a schematic diagram of the overall structure of Embodiment 1;

[0021] Figure 2 is an exploded view of the grinding cylinder of Example 1;

[0022] Figure 3 is a cross-sectional view of the grinding cylinder of Example 1;

[0023] Figure 4 is a cross-sectional view of the grinding media of Example 2;

[0024] Figure 5 is a cross-sectional view of the grinding media of Example 3;

[0025] Figure 6 is a cross-sectional view of the grinding cylinder of Example 4;

[0026] Figure 7 is a partial cross-sectional view of the grinding cylinder of Example 4;

[0027] Figure 8 is a schematic diagram of the capture mechanism in Example 4;

[0028] Figure 9 is a magnified view of part A in Figure 8;

[0029] Figure 10 is a cross-sectional view of the grinding cylinder of Example 4;

[0030] Figure 11 is a cross-sectional view of the grinding cylinder of Example 5.

[0031] Explanation of reference numerals in the attached drawings: 1. Grinding cylinder; 2. Grinding body; 10. Base; 101. Tilting frame; 102. Rotation drive mechanism; 11. Outer cylinder; 110. Cooling channel; 111. Clearance hole; 12. End cap; 13. Filter screen; 14. Raised rib; 15. Through hole; 16. Cover plate; 17. Base plate; 171. Strip hole; 20. Grinding ball; 21. Steel rod; 22. Ceramic sleeve; 23. Annular air bag; 24. Ball cap; 25. Steel pipe; 251. Mounting hole; 26. Ceramic ball; 27. Bag; 28. Compression spring; 29. ​​Pressure plate; 31. Annular heat exchange tube; 32. Branch pipe; 33. Rotary joint; 34. Circulation inlet pipe; 35. Circulation outlet pipe; 51. Mesh plate; 511. Receiving... 512. Gathering part; 513. Side guard; 514. Narrowing groove; 5141. Upper groove opening; 5142. Side groove opening; 52. Slider; 521. Rotating shaft; 53. Covering strip; 54. Rotation drive assembly; 55. Linear drive assembly; 561. First rod; 562. Second rod; 563. Hinge rod; 564. Transmission rod; 565. Spring; 566. First slide groove; 567. Second slide groove; 57. Fixing sleeve; 571. First slide bar; 5711. First opening part; 5712. Through hole; 572. Second slide bar; 5721. Second opening part; 5722. Guide part; 58. Guide plate; 581. Release end; 582. Abutment end; 583. Traction rope. Detailed Implementation

[0032] The embodiments of this application are described in detail below, and examples of the embodiments are shown in Figures 1-11.

[0033] In the description of this specification, the references to "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the described embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] Example 1

[0035] Example 1 discloses a matcha grinder, as shown in Figures 1 and 2. The matcha grinder includes a base 10, a grinding cylinder 1, a grinding body 2, an outer cylinder 11, a rotation drive mechanism 102, and a cooling mechanism. The base 10 is provided with a tilting frame 101, and the grinding cylinder 1 is rotatably connected to the tilting frame 101. The rotation drive mechanism 102 is used to drive the grinding cylinder 1 to rotate around its own axis. The rotation drive mechanism 102 can be a combination of a motor and a gear set. The tilting frame 101 is used to adjust the axial angle of the grinding cylinder 1 to facilitate feeding and discharging. In the grinding state, the axial angle of the grinding cylinder 1 is horizontal.

[0036] The grinding body 2 is located inside the grinding cylinder 1. Multiple protruding ribs 14 are fixed on the inner circumferential surface of the grinding cylinder 1. One end of the grinding cylinder 1 is detachably equipped with an end cap 12 and a filter screen 13. The end cap 12 and the filter screen 13 can be disassembled and installed independently. When feeding, both the end cap 12 and the filter screen 13 are removed; when discharging, only the end cap 12 is removed. The filter screen 13 is used to prevent the grinding body 2 from being poured out with the matcha.

[0037] The grinding body 2 can be spherical or rod-shaped. In this embodiment, the grinding body 2 is rod-shaped. Specifically, both ends of the rod-shaped grinding body 2 are spherical. The two ends of the rod-shaped grinding body 2 have very small gaps between them and the filter screen 13 and the bottom of the grinding cylinder 1, respectively, to satisfy the mobility of the grinding body 2. Furthermore, the rod-shaped grinding body 2 is combined with the convex ribs 14, which make the axis of the grinding body 2 parallel to the axis of the grinding cylinder 1. Therefore, during the flat polishing or collision process, the adjacent grinding bodies 2 are in line contact, and the contact effect is significant, which greatly improves the grinding efficiency. At the same time, the collision position is more controllable, thereby improving the uniformity of collision crushing.

[0038] As shown in Figures 2 and 3, the cooling mechanism includes a circulation inlet pipe 34, a circulation outlet pipe 35, two rotary joints 33, multiple annular heat exchange tubes 31 and branch pipes 32. The annular heat exchange tubes 31 are coaxially sleeved on the outside of the grinding cylinder 1, and the annular heat exchange tubes 31 are arranged axially at equal intervals. The branch pipes 32 are embedded in the outer circumferential surface of the grinding cylinder 1 and connect two adjacent annular heat exchange tubes 31.

[0039] The circulation inlet pipe 34 and circulation outlet pipe 35 can be flexible hoses. The circulation inlet pipe 34 is connected to one of the rotating joints 33, and the circulation outlet pipe 35 is connected to the other rotating joint 33. The two rotating joints 33 are respectively rotatably connected to both ends of the grinding cylinder 1 to ensure that the rotation of the grinding cylinder 1 will not affect the water inlet of the circulation inlet pipe 34 and the water outlet of the circulation outlet pipe 35. The rotating joint 33 is connected to the adjacent annular heat exchange pipe 31 through the branch pipe 32.

[0040] During the grinding process, cooling water is introduced into the circulation inlet pipe 34. The cooling water enters each annular heat exchange tube 31 through the rotary joint 33 and the branch pipe 32 to remove the heat from the grinding cylinder 1, reduce the temperature of the tea leaves, slow down the decomposition of theanine, and thus maintain the freshness of the matcha.

[0041] Furthermore, in order to reduce the influence of external temperature on the grinding cylinder 1, the outer cylinder 11 is rotatably sleeved on the outside of the grinding cylinder 1. The inner circumferential surface of the outer cylinder 11 is in contact with the outer circumferential surface of the annular heat exchange tube 31. The outer cylinder 11 mainly serves to keep the heat insulated. Since the outer cylinder 11 can rotate relative to the grinding cylinder 1, the rotation process of the grinding cylinder 1 has little impact on the positional stability of the outer cylinder 11. In addition, the outer cylinder 11 is provided with a clearance hole 111. The clearance hole 111 is a long arc shape with a central angle of 270°. The circulation inlet pipe 34 and the circulation outlet pipe 35 both pass through the clearance hole 111 so that the outer cylinder 11 will not interfere with the circulation inlet pipe 34 and the circulation outlet pipe 35 when it rotates at a certain angle.

[0042] Example 2

[0043] The difference between Example 2 and Example 1 is that, as shown in Figure 4, the grinding body 2 includes a steel rod 21 and a ceramic sleeve 22. The ceramic sleeve 22 is fitted on the outside of the steel rod 21. An annular cavity is provided between the ceramic sleeve 22 and the steel rod 21. An annular airbag 23 is placed in the annular cavity. The annular airbag 23 contains high-pressure air. The inner diameter and outer diameter of the annular airbag 23 abut against the steel rod 21 and the ceramic sleeve 22, respectively.

[0044] A ball cap 24 is fixed to the end of the ceramic sleeve 22. The ball cap 24 is made of ceramic material. There is a movable gap between the ball cap 24 and the inner end face of the grinding cylinder 1, which makes the grinding body 2 more flexible and reduces friction during the movement of the grinding body 2.

[0045] By setting the ceramic sleeve 22, the occurrence of heat conduction and metal dust mixing can be reduced, while the annular airbag 23 can buffer the impact force on the ceramic sleeve 22 to reduce the occurrence of ceramic sleeve 22 breaking upon impact.

[0046] Example 3

[0047] The difference between Example 3 and Example 1 is that, as shown in Figure 5, the grinding body 2 includes a steel pipe 25 and multiple ceramic balls 26. The end of the steel pipe 25 is provided with a ball cap 24, which is made of ceramic material. The ball cap 24 is threadedly connected to the steel pipe 25 to adjust the axial position of the ball cap 24 relative to the steel pipe 25. There is also a movable gap between the ball cap 24 and the inner end face of the grinding cylinder 1.

[0048] The steel pipe 25 is densely covered with mounting holes 251. Adjacent mounting holes 251 are staggered around the circumference of the steel pipe 25. Ceramic balls 26 are embedded in the mounting holes 251. The diameter of the ceramic balls 26 is larger than the diameter of the mounting holes 251, that is, most of the ceramic balls 26 are located inside the steel pipe 25, and a small part is exposed outside the steel pipe 25. In order to prevent the ceramic balls 26 from falling into the steel pipe 25, a columnar bladder 27 is provided inside the steel pipe 25. The bladder 27 is made of plastic and is coaxial with the steel pipe 25. The bladder 27 is filled with water. The outer circumferential surface of the bladder 27 abuts against the inner circumferential surface of the steel pipe 25 and part of the spherical surface of the ceramic balls 26 to prevent the ceramic balls 26 from falling out of the mounting holes 251.

[0049] Furthermore, in order to increase the stability of the ceramic ball 26, a compression spring 28 is fixed to the ball cap 24. A circular pressure plate 29 is fixed to the end of the compression spring 28. The pressure plate 29 is axially slidably connected to the inner cavity of the steel tube 25. The elastic force of the compression spring 28 forces the pressure plate 29 to squeeze the end of the bladder 27, so as to force the bladder 27 to expand and deform radially. The deformation force of the bladder 27 is applied radially to the ceramic ball 26 to improve the stability of the ceramic ball 26.

[0050] In this way, by setting ceramic balls 26 embedded in steel pipe 25, and taking advantage of the fact that steel pipe 25 is parallel to the axis of grinding cylinder 1, the arrangement position of ceramic balls 26 is limited, making the collision position of ceramic balls 26 more controllable, thereby improving the uniformity of collision crushing.

[0051] Furthermore, by setting the distribution density of the ceramic balls 26, when the two grinding bodies 2 collide and come into contact, only the ceramic balls 26 collide with each other, rather than the ceramic balls 26 colliding with the outer surface of the steel pipe 25.

[0052] By setting a water-filled bladder 27, not only can the weight of the grinding media 2 be increased to improve the impact crushing effect, but also, in conjunction with the tightening of the ball cap 24, the compression spring 28 contracts, and the elastic force of the compression spring 28 is converted into the deformation force of the bladder 27 to improve the buffering and limiting effect on the ceramic ball 26; at the same time, water has a large specific heat capacity to greatly reduce the temperature rise of the steel pipe 25, thereby reducing the occurrence of temperature rise in the tea leaves.

[0053] Example 4

[0054] The difference between Example 4 and Example 1 is that, as shown in Figure 6, the grinding body 2 is set as a grinding ball 20, which can be made of ceramic material, and the axial gap between two adjacent annular heat exchange tubes 31 is set as a cooling channel 110. The wall of the grinding cylinder 1 is provided with multiple through holes 15 and a cover plate 16 for opening and closing the through holes 15. Each through hole 15 is connected to each cooling channel 110 in a one-to-one correspondence. Specifically, the lower side of the cover plate 16 is hinged to the hole wall of the through hole 15. This hinge can be achieved by a hinge structure, and a first torsion spring (not shown in the figure) is provided at the hinge. The elastic force of the first torsion spring is used to force the cover plate 16 to close the through hole 15, so that the through hole 15 is closed under normal conditions.

[0055] The grinding balls 20 are set in two groups, one group of grinding balls 20 is located inside the grinding cylinder 1, and the other group of grinding balls 20 is located in the cooling channel 110.

[0056] Furthermore, the matcha grinder also includes a capture mechanism and a release mechanism. During the grinding process, one set of grinding balls 20 is in the state of grinding and pulverizing tea leaves, while the other set of grinding balls 20 is in the state of cooling. When the grinding balls 20 pulverizing tea leaves are heated up due to long-term collision, the capture mechanism captures and collects the high-temperature grinding balls 20. Then, the grinding balls 20 originally located in the cooling channel 110 are evenly released into each axial position of the inner cavity of the grinding cylinder 1 through the release mechanism. Then, the capture mechanism evenly disperses the collected high-temperature grinding balls 20 into each cooling channel 110. In this way, the cooling grinding balls 20 can cool the tea leaves, while the high-temperature grinding balls 20 continue to cool down in the cooling channel 110, thereby reducing the occurrence of the grinding balls 20 affecting the quality of the tea leaves due to long-term collision and temperature rise. Furthermore, the two sets of grinding balls 20 can be swapped multiple times according to the temperature rise.

[0057] Furthermore, since the grinding balls 20 are evenly distributed in each cooling channel 110, the number of grinding balls 20 released by the cooling channel 110 is uniform and evenly distributed in each axial position of the inner cavity of the grinding cylinder 1, thereby facilitating the improvement of the grinding uniformity of the tea leaves by the grinding balls 20.

[0058] The rotation of the grinding cylinder 1 will drive the grinding ball 20 to move. When the grinding ball 20 moves to a high position, it will move in a parabolic motion with a certain initial velocity. The capturing mechanism is used to capture the grinding ball 20 in this state to reduce interference with the tea leaves.

[0059] Specifically, as shown in Figures 7 and 8, the bottom of the grinding cylinder 1 is provided with a base plate 17, which is kept in a fixed state (the base plate 17 can be fixed to the flipping frame 101 so that the rotation of the grinding cylinder 1 will not affect the base plate 17). The base plate 17 has a through-hole 171, which is horizontally set and is higher than the axis of the grinding cylinder 1.

[0060] The capturing mechanism includes a slider 52, a blocking strip 53, a rotating shaft 521, a mesh plate 51, a rotation drive assembly 54, a linear drive assembly 55, and an opening and closing assembly. The slider 52 is slidably connected to the strip hole 171 along the length of the strip hole 171. The rotating shaft 521 is rotatably inserted through the slider 52. The rotation drive assembly 54 and the blocking strip 53 are both installed on the outside of the slider 52. The area of ​​the blocking strip 53 is larger than that of the strip hole 171, so that the blocking strip 53 always fits against the outer surface of the base plate 17 and blocks the strip hole 171 during the sliding process of the slider 52, thereby reducing the occurrence of tea leaves falling out of the strip hole 171.

[0061] The rotary drive assembly 54 can be a motor, which drives the rotating shaft 521 to rotate, while the linear drive assembly 55 can be a cylinder or an electric push rod, which is fixed on the outer surface of the base plate 17. The linear drive assembly 55 is used to drive the slider 52 to slide.

[0062] The middle part of the mesh plate 51 is fixed to the rotating shaft 521. The mesh plate 51 is provided with a retaining edge 513 around its perimeter. The mesh plate 51 is divided into a distribution part 512 and a collection part 511 with the rotating shaft 521 as the dividing line (see Figure 6). The middle part of the collection part 511 is bent downward. The collection part 511 can intercept and capture the grinding ball 20 in projectile motion. Excess tea leaves can fall through the mesh holes of the mesh plate 51.

[0063] As shown in Figures 8 and 9, the spreading section 512 is designed as a plane so that the grinding balls 20 of the collecting section 511 can roll and spread evenly on the surface of the spreading section 512. On the side of the spreading section 512 away from the collecting section 511, there are multiple narrowing grooves 514. Each narrowing groove 514 is arranged in a one-to-one correspondence with each through hole 15. The narrowing grooves 514 can evenly divide the grinding balls 20 of the spreading section 512, so that the number of grinding balls 20 in each narrowing groove 514 is relatively uniform. Furthermore, the opening and closing component is used to open and close the outlet of the narrowing groove 514 so that the grinding balls 20 in the narrowing groove 514 can be discharged into the corresponding through hole 15.

[0064] Specifically, the narrowing groove 514 has an upper groove 5141 and a side groove 5142, wherein the side groove 5142 is the outlet of the narrowing groove 514. The opening and closing assembly includes a first rod 561, a transmission rod 564, a second rod 562, a hinge rod 563, and a spring 565. The upper groove 5141 of the narrowing groove 514 is provided with a first sliding groove 566 on both sides, and the side groove 5142 of the narrowing groove 514 is provided with a second sliding groove 567 on both sides. The first sliding groove 566 and the second sliding groove 567 are connected. The end of the second rod 562 slides with the second sliding groove 567. Under normal conditions, the second rod 562 is located in the middle of the side groove 5142 to prevent the grinding ball 20 from falling from the side groove 5142.

[0065] The end of the first rod 561 slides with the first groove 566. The two ends of the hinge rod 563 are respectively hinged to the middle of the first rod 561 and the second rod 562. The spring 565 is located in the first groove 566. The elastic force of the spring 565 is used to force the first rod 561 to slide towards the side groove 5142 of the narrowing groove 514. The transmission rod 564 is L-shaped. One end of the transmission rod 564 is fixed to the first rod 561. The other end of the transmission rod 564 extends away from the mesh plate 51. This end is set as the free end of the transmission rod 564.

[0066] As shown in Figures 6 and 10, the release mechanism includes multiple first slide bars 571, multiple second slide bars 572, and two sets of fixing sleeves 57. One end of the fixing sleeve 57 is fixed to the outer circumferential surface of the grinding cylinder 1. The fixing sleeve 57 extends radially along the grinding cylinder 1. Each fixing sleeve 57 is correspondingly arranged and connected to each cooling channel 110. Each fixing sleeve 57 is equidistantly arranged along the axial direction of the grinding cylinder 1. Furthermore, the included angle between the axes of the two sets of fixing sleeves 57 is 90°.

[0067] Each first slide bar 571 is slidably connected to each of the fixed sleeves 57 in one group, and each second slide bar 572 is slidably connected to each of the fixed sleeves 57 in another group. The middle part of the first slide bar 571 is provided with a through hole 5712 for the grinding ball 20 to pass through. The end of the first slide bar 571 away from the fixed sleeve 57 is designated as the first opening part 5711, the middle part of the second slide bar 572 is designated as the guide part 5722, and the end of the second slide bar 572 away from the fixed sleeve 57 is designated as the second opening part 5721.

[0068] To improve the convenience of sliding operation, the exposed ends of each first slider 571 can be connected to a straight rod. The movement of the straight rod drives the multiple first sliders 571 to move synchronously. The same applies to the second slider 572.

[0069] In the implementation of Example 4, when the temperature of the grinding balls 20 in the grinding cylinder 1 rises, the high-temperature grinding balls 20 can be captured. Specifically, the slider 52 slides to the end of the strip hole 171 away from the through hole 15, and the rotating shaft 521 rotates, so that the collecting part 511 is located on the lower side and the distributing part 512 is located on the upper side (see Figure 6). At this time, the grinding cylinder 1 continues to rotate, so as to drive the grinding balls 20 to make parabolic motion. The collecting part 511 will intercept the grinding balls 20 in the parabolic state, while the tea powder falls through the mesh of the screen plate 51.

[0070] After capture, the cooling grinding balls 20 in the cooling channel 110 need to be discharged into the grinding cylinder 1. Specifically, the grinding cylinder 1 stops rotating, the through hole 15 is located on the horizontal side of the axis of the grinding cylinder 1, the first slide bar 571 is located directly above the grinding cylinder 1, and the second slide bar 572 is located on one side of the through hole 15. The first opening portion 5711 of the first slide bar 571 and the second opening portion 5721 of the second slide bar 572 are both located within the cooling channel 110. The cooling grinding balls 20 are placed in the area of ​​the cooling channel 110 between the first opening portion 5711 and the second opening portion 5721, and need to be discharged. When grinding ball 20, the second slide bar 572 moves toward the axis of the grinding cylinder 1. The second opening part 5721 of the second slide bar 572 passes through the through hole 15 and abuts against the cover plate 16 to force the cover plate 16 to flip and open the through hole 15. At this time, the guide part 5722 of the second slide bar 572 is located in the cooling channel 110, that is, the guide part 5722 is located directly below the grinding ball 20. Since the through hole 15 is open, the grinding ball 20 can fall and fall into the inner cavity of the grinding cylinder 1 through the guide part 5722 and the through hole 15, thereby completing the release of the grinding ball 20 in the cooling channel 110.

[0071] After the cooling grinding ball 20 is released, the high-temperature grinding ball 20 needs to be placed into the cooling channel 110 for cooling in order to facilitate subsequent release. Specifically, the second slide bar 572 is moved away from the axis of the grinding cylinder 1 so that the second opening part 5721 of the second slide bar 572 is located in the cooling channel 110. The cover plate 16 closes the through hole 15 under the action of the first torsion spring. Then, the outer cylinder 1190° is rotated counterclockwise (refer to Figure 6) so that the second slide bar 572 is located directly below the grinding cylinder 1 and the first slide bar 571 is located on one side of the through hole 15 (see Figure 10). Then, the first slide bar 571 is slid towards the axis of the grinding cylinder 1. When the first opening part 5711 slides through the through hole 15, the first opening part 5711 abuts against the cover plate 16 to force the cover plate 16 to flip and open the through hole 15. At this time, the through hole 15 is located in the cooling channel 110.

[0072] The slider 52 slides toward the through hole 15, while the rotating shaft 521 rotates, causing the distribution part 512 to move downward. Under the action of gravity, the grinding balls 20 of the collecting part 511 slide toward the distribution part 512 and are evenly distributed in each narrow groove 514. The narrow groove 514 extends into the through hole 15. At this time, the free end of the transmission rod 564 abuts against the inner peripheral wall of the grinding cylinder 1, thereby driving the first rod 561 and the second rod 562 to move, so that the second rod 562... The grinding ball 20 is moved away from the side slot 5142 to remove the obstruction of the second rod 562 on the grinding ball 20, so that the grinding ball 20 can enter the through hole 15 and the cooling channel 110 from the side slot 5142. Then the grinding ball 20 falls through the through hole 5712 into the range of 90° of the central angle of the cooling channel 110 (the grinding ball 20 is blocked by the second opening part 5721 of the second slider 572 and cannot continue to move), thereby completing the cooling and placement of the grinding ball 20.

[0073] Example 5

[0074] The difference between Embodiment 5 and Embodiment 4 is that, as shown in Figure 11, the release mechanism further includes a guide plate 58 and a traction rope 583. The guide plate 58 is curved and located directly above the guide portion 5722. The middle part of the guide plate 58 is hinged to the guide portion 5722. A second torsion spring (not shown in the figure) is provided at the hinge. The end of the guide plate 58 near the axis of the grinding cylinder 1 is designated as the release end 581, and the end of the guide plate 58 away from the axis of the grinding cylinder 1 is designated as the abutment end 582. The elastic force of the second torsion spring is used to force the release end 581 of the guide plate 58 to move upward.

[0075] The traction rope 583 is slidably threaded through the second slide bar 572, and one end of the traction rope 583 is fixed to the release end 581 of the guide plate 58.

[0076] When the cooling grinding balls 20 need to be discharged into the grinding cylinder 1, the guide plate 58 is located directly below the grinding balls 20. Under the action of gravity, the grinding balls 20 will move along the curved surface of the guide plate 58 and make a parabolic motion. Since the release end 581 of the guide plate 58 is at a different height, it affects the falling of the grinding balls 20 and their conversion into parabolic motion to the landing point in the grinding cylinder 1. Therefore, when each grinding ball 20 falls past the guide plate 58, the traction rope 583 is continuously pulled to drive the guide plate 58. The release end 581 continuously deflects downwards (during which the second slide bar 572 also needs to be continuously moved to ensure that the abutting end 582 of the guide plate 58 continuously abuts against the inner circumferential surface of the outer cylinder 11 to prevent the falling grinding balls 20 from getting stuck), thereby making the landing positions of different grinding balls 20 different, so as to achieve a uniform arrangement of grinding balls 20 in the circumferential position of the grinding cylinder 1, and combined with the axially uniformly arranged through holes 15, to achieve a uniform arrangement of grinding balls 20 in the axial position of the grinding cylinder 1, thereby greatly improving the grinding uniformity.

[0077] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A matcha grinder, characterized in that, The system includes a grinding cylinder (1), a base (10), an outer cylinder (11), a rotation drive mechanism (102), a cooling mechanism, a capture mechanism, and a release mechanism. The grinding cylinder (1) is movably connected to the base (10). The rotation drive mechanism (102) drives the grinding cylinder (1) to rotate around its own axis. One end of the grinding cylinder (1) is detachably equipped with an end cap (12). Multiple protruding ribs (14) are fixed on the inner circumferential surface of the grinding cylinder (1). Multiple grinding media (2) are placed inside the grinding cylinder (1). The outer cylinder (11) is rotatably fitted onto the grinding media. The cooling mechanism includes a circulation inlet pipe (34), a circulation outlet pipe (35), two rotary joints (33), multiple annular heat exchange tubes (31), and branch pipes (32). The annular heat exchange tubes (31) are coaxially sleeved on the outside of the grinding cylinder (1), and each annular heat exchange tube (31) is axially spaced at equal intervals. The branch pipes (32) are embedded in the outer circumferential surface of the grinding cylinder (1) and connect two adjacent annular heat exchange tubes (31). The two rotary joints (33) are rotatably connected to both ends of the grinding cylinder (1). The rotary joint (33) is connected to the adjacent annular heat exchange tube (31) through the branch pipe (32), the circulation inlet pipe (34) is connected to one of the rotary joints (33), and the circulation outlet pipe (35) is connected to the other rotary joint (33); the axial gap between two adjacent annular heat exchange tubes (31) is set as a cooling flow channel (110), the grinding body (2) is a grinding ball (20), and the grinding balls (20) are set in two sets, one set of grinding balls (20) is located in the grinding cylinder (1), and the other set of grinding balls (20) is located in the grinding cylinder (1). In the cooling channel (110), the wall of the grinding cylinder (1) is provided with a through hole (15) and a cover plate (16) for opening and closing the through hole (15). Each through hole is connected to each cooling channel (110) in a one-to-one correspondence. The capturing mechanism is used to capture and collect the grinding balls (20) in the flat-throwing state and evenly disperse the grinding balls (20) into each cooling channel (110). The releasing mechanism is used to evenly release the grinding balls (20) in the cooling channel (110) to each axial position in the inner cavity of the grinding cylinder (1).

2. The matcha grinder according to claim 1, characterized in that, The grinding body (2) includes a steel rod (21) and a ceramic sleeve (22). The ceramic sleeve (22) is fitted on the outside of the steel rod (21). The end of the ceramic sleeve (22) is provided with a ball cap (24). There is a movable gap between the ball cap (24) and the inner end face of the grinding cylinder (1).

3. The matcha grinder according to claim 1, characterized in that, The grinding body (2) includes a steel pipe (25) and multiple ceramic balls (26). The end of the steel pipe (25) is provided with a ball cap (24), and there is a movable gap between the ball cap (24) and the inner end face of the grinding cylinder (1). The steel pipe (25) is densely covered with mounting holes (251), and two adjacent mounting holes (251) are staggered along the circumference of the steel pipe (25). The ceramic balls (26) are embedded in the mounting holes (251), and the diameter of the ceramic balls (26) is larger than the aperture of the mounting holes (251).

4. The matcha grinder according to claim 1, characterized in that, The lower side of the cover plate (16) is hinged to the wall of the through hole (15), and a first torsion spring is provided at the hinge. The first torsion spring is used to force the cover plate (16) to close the through hole (15). The release mechanism includes a plurality of first slide bars (571), a plurality of second slide bars (572), and two sets of fixing sleeves (57). One end of the fixing sleeve (57) is fixed to the outer circumferential surface of the grinding cylinder (1). The fixing sleeve (57) is connected to the cooling channel (110). The fixing sleeve (57) extends radially along the grinding cylinder (1). The fixing sleeves (57) are arranged equidistantly along the axial direction of the grinding cylinder (1), and the included angle between the axes of the two sets of fixing sleeves (57) is 90°; the first slide bar (571) is slidably connected to one set of fixing sleeves (57), and the second slide bar (572) is slidably connected to the other set of fixing sleeves (57). The middle part of the first slide bar (571) is provided with a through hole (5712) for the grinding ball (20) to pass through. The end of the first slide bar (571) away from the fixing sleeve (57) is provided as a first opening part (5711). When the first opening part (5711) is located in the cooling channel (110), the first opening part (5711) blocks the cooling channel (110). When the first opening part (5711) slides through the through hole (15), the first opening part (5711) abuts against the cover plate (16) to force the cover plate (16) to flip and open the through hole (15); the middle part of the second slide bar (572) is provided as the guide part (5722), and the end of the second slide bar (572) away from the fixed sleeve (57) is provided as the second opening part (5721); when the second ... slides through the through hole (15), the first opening part (5711) abuts against the cover plate (16) to force the cover plate (16) to flip and open the through hole (15); the middle part of the second slide bar (572) is provided as the guide part (5722), and the end of the second slide bar (572) away from the fixed sleeve (57) is provided as the second opening part (5721); when the second opening part (5711) slides through the through hole (15), the first opening part (5711) blocks the cooling channel (110). When the second opening part (5711) slides through the through hole (15), the first When the opening part (5721) is located in the cooling channel (110), the second opening part (5721) blocks the cooling channel (110). When the second opening part (5721) slides through the through hole (15), the second opening part (5721) abuts against the cover plate (16) to force the cover plate (16) to flip open the through hole (15). The guide part (5722) is located in the cooling channel (110) to guide the falling grinding ball (20) in the cooling channel (110) through the through hole (15) and into the inner cavity of the grinding cylinder (1).

5. The matcha grinder according to claim 4, characterized in that, The grinding cylinder (1) has a bottom plate (17) rotatably mounted on its bottom. The bottom plate (17) remains fixed. A strip-shaped hole (171) is opened through the bottom plate (17). The strip-shaped hole (171) is horizontally positioned and is higher than the axis of the grinding cylinder (1). The capturing mechanism includes a slider (52), a shielding strip (53), a rotating shaft (521), a mesh plate (51), a rotation drive assembly (54), a linear drive assembly (55), and an opening and closing assembly. The slider (52) is slidably connected to the strip-shaped hole (171) along the length of the strip-shaped hole (171). The rotating shaft (521) rotates through the slider (52). The rotation drive assembly (54) is used to drive the rotating shaft (521) to rotate. The linear drive assembly... (55) is used to drive the slider (52) to slide. The middle part of the mesh plate (51) is fixed to the rotating shaft (521). The mesh plate (51) is divided into a distribution part (512) and a collection part (511) with the rotating shaft (521) as the dividing line. The middle part of the collection part (511) is bent downward and the distribution part (512) is set as a plane. The distribution part (512) is provided with a plurality of narrowing grooves (514) on the side away from the collection part (511). Each narrowing groove (514) is provided in correspondence with each of the through holes (15). The opening and closing component is used to open and close the outlet of the narrowing groove (514). The blocking strip (53) is fixed to the slider (52). The blocking strip (53) is used to block the strip hole (171).

6. The matcha grinder according to claim 5, characterized in that, The opening and closing assembly includes a first rod (561), a transmission rod (564), a second rod (562), a hinge rod (563), and a spring (565). The upper slot (5141) of the narrowing groove (5144) is provided with a first sliding groove (566), and the side slot (5142) of the narrowing groove (5144) is provided with a second sliding groove (567). The first sliding groove (566) and the second sliding groove (567) are connected. The end of the first rod (561) slides with the first sliding groove (566), and one end of the transmission rod (564) is fixed to the first rod (561). The spring (565) The first rod (561) is used to force the first rod (561) to slide toward the side groove (5142) of the narrowing groove (514), the end of the second rod (562) slides with the second slide groove (567), and the two ends of the hinge rod (563) are respectively hinged to the middle of the first rod (561) and the second rod (562); when the linear drive assembly (55) drives the mesh plate (51) to move toward the through hole (15), the free end of the transmission rod (564) abuts against the inner peripheral wall of the grinding cylinder (1), and the first rod (561) slides away from the side groove (5142).

7. The matcha grinder according to claim 4, characterized in that, The release mechanism also includes a guide plate (58) and a traction rope (583). The guide plate (58) is curved and located directly above the guide part (5722). The middle part of the guide plate (58) is hinged to the guide part (5722). A second torsion spring is provided at the hinge. The end of the guide plate (58) near the axis of the grinding cylinder (1) is designated as the release end (581), and the end of the guide plate (58) away from the axis of the grinding cylinder (1) is designated as the abutment end. The second torsion spring is used to force the release end (581) of the guide plate (58) to move upward. The abutting end (582) abuts against the inner circumferential surface of the outer cylinder (11). The traction rope (583) passes through the second slide bar (572). One end of the traction rope (583) is fixed to the release end (581) of the guide plate (58). The release end (581) of the guide plate (58) is driven to deflect downward by the pulling of the traction rope (583).

8. The matcha grinder according to claim 2, characterized in that, An annular chamber is provided between the ceramic sleeve (22) and the steel rod (21). An annular airbag (23) is placed in the annular chamber. The annular airbag (23) contains high-pressure air. The inner diameter and outer diameter of the annular airbag (23) abut against the steel rod (21) and the ceramic sleeve (22), respectively.

9. The matcha grinder according to claim 3, characterized in that, The steel pipe (25) is provided with a columnar sac (27) filled with water. The outer circumferential surface of the sac (27) abuts against the inner circumferential surface of the steel pipe (25) and part of the spherical surface of the ceramic ball (26). The ball cap (24) is threadedly connected to the end of the steel pipe (25). The ball cap (24) is fixed with a compression spring (28). The end of the compression spring (28) is fixed with a circular pressure plate (29). The pressure plate (29) is axially slidably connected to the inner cavity of the steel pipe (25). The elastic force of the compression spring (28) forces the pressure plate (29) to squeeze the end of the sac (27).

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