Preparation device and method of tea stock solution

Abstract

The invention discloses a tea stock solution preparation device and method, and relates to the related technical field of tea stock solution production.The tea stock solution preparation device comprises a grinding mechanism, an upper grinding disc and a lower grinding disc are arranged in a grinding box body of the grinding mechanism, and the lower grinding disc is driven by a driving mechanism to rotate relative to the upper grinding disc; an adjusting mechanism used for adjusting the distance between the upper grinding disc and the lower grinding disc is further arranged on the grinding box body, the grinding box further comprises an extending part, and the extending part comprises an upper extending body used for extending the radial size of the upper grinding disc and a lower extending body used for extending the radial size of the lower grinding disc; the pushing piece is used for controlling the upper extending body to extend and the lower extending body to extend; the monitoring mechanism is used for monitoring the grinding granularity of the tea leaves; the adjusting mechanism adjusts the distance between the upper grinding disc and the lower grinding disc in real time based on a monitoring signal of the monitoring mechanism; and the pushing piece controls the extension sizes of the upper extension body and the lower extension body based on the power of the adjusting mechanism.

Description

Technical Field

[0001] The present invention relates to the technical field related to the production of tea stock solution, and specifically to a device and method for preparing tea stock solution. Background Art

[0002] As is well known, tea stock solution is the liquid obtained by crushing tea leaves with water and then filtering out the tea paste. In the prior art, the production process flow of tea stock solution is as Figure 1 shown in the figure. Among them, for the crushing of tea leaves, a wet grinder is generally used. The ratio of tea leaves to water is 1:10 - 20, the rotation speed of the grinder is about 1400, the temperature of ionized water is 35 - 50 degrees Celsius, the grinding speed is 1 kg / min, and the fineness of the ground tea leaves is adjusted according to production requirements.

[0003] For example, in the patent with publication number CN118341525A, publication date of July 16, 2024, and title "A Wet Crushing of Tea Leaves", it includes a driving member and a first grinding part and a second grinding part arranged up and down. A crushing cavity is jointly formed in the middle of the first grinding part and the second grinding part. Channels communicating with the crushing cavity are respectively opened on the first grinding part and the second grinding part. A feeding member is further arranged at the bottom of the crushing cavity. The driving member drives the feeding member to rotate differentially with the second grinding part. It further includes an adjusting mechanism for adjusting the feeding member to deflect to one side after moving upward. The adjusting mechanism drives the feeding member to move upward and then deflect to one side, so that the feeding member can temporarily move the agglomerated materials at the edge of the crushing cavity away from the edge to the center. Subsequently, the adjusting mechanism drives the feeding member to reset. The feeding member contacts the agglomerated materials at the center. Under the action of the rotational force, the agglomerated materials accelerate and impact the inner wall of the crushing cavity, so that the agglomerated materials are dispersed, avoiding too many agglomerated materials and affecting the discharging efficiency.

[0004] During the preparation of tea stock solution, both the separated tea stock solution and the tea paste products are salable products. Among them, the concentration of the tea stock solution can be relatively easily adjusted by relying on the ratio of tea leaves to water. However, the quality of the tea paste products is more related to the crushing degree of the raw tea leaves, that is, the particle size of the crushed tea leaves affects the quality of the tea paste products. If the particle size of the tea paste is too fine, the tea flavor of the tea paste will become much lighter after filtering the tea stock solution. On the contrary, if the particle size of the tea paste is too coarse, the flavor of the tea stock solution will become lighter.

[0005] The deficiency of the prior art is that the distance between the upper and lower grinding disks of the grinder can be adjusted to control the particle size of the tea paste. However, during the adjustment, the corresponding parts between the two change equidistantly. That is, when expanding the distance between the upper and lower grinding disks, due to the flexible characteristics of tea leaves that can deform and curl by themselves, it is easy to cause the situation that some tea leaves are not sufficiently ground. When reducing the distance between the upper and lower grinding disks, it will cause the situation that some tea leaves are over-ground. Summary of the Invention

[0006] The purpose of the present invention is to provide a device and method for preparing tea stock solution to solve the technical problems in the related art.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A preparation device for tea concentrate comprises a grinding mechanism, wherein an upper grinding disc and a lower grinding disc are arranged in a grinding box of the grinding mechanism, wherein the lower grinding disc rotates relative to the upper grinding disc under the drive of a driving mechanism, and an adjusting mechanism for adjusting the distance between the upper grinding disc and the lower grinding disc is also arranged on the grinding box, and further comprises an extension part, which comprises an upper extension body for extending the radial dimension of the upper grinding disc and a lower extension body for extending the radial dimension of the lower grinding disc; further comprises a pushing member for controlling the extension of the upper extension body and the extension of the lower extension body; a monitoring mechanism for monitoring the grinding particle size of tea leaves; the adjusting mechanism adjusts the distance between the upper grinding disc and the lower grinding disc in real time based on the monitoring signal of the monitoring mechanism; and the pushing member controls the extension dimensions of the upper extension body and the lower extension body based on the power of the adjusting mechanism.

[0009] As mentioned above, the upper extension body is annular, and one axial end is installed on the grinding surface of the upper grinding disk by multiple rivets, and the other end is circumferentially provided with multiple first blocks in sequence, and the multiple first blocks are slidably arranged in the corresponding radial directions on the side of the upper grinding disk away from the grinding surface, and each first block is provided with a first elastic member between the upper grinding disk and the first block in the sliding direction.

[0010] As mentioned above, the lower grinding body is annular, and one axial end is installed on the grinding surface of the lower grinding disk by multiple rivets, and the other end is circumferentially provided with multiple second blocks in sequence, and the multiple second blocks are slidably arranged on the side of the lower grinding disk away from the grinding surface in their respective corresponding radial directions, and each second block is provided with a second elastic member between the lower grinding disk and the sliding direction; the multiple first blocks correspond one by one to the multiple second blocks in the axial direction.

[0011] As mentioned above, each rivet used to connect the upper extension body with the upper grinding disc protrudes from the grinding surface of the upper grinding disc; each rivet used to connect the lower extension body with the lower grinding disc protrudes from the grinding surface of the lower grinding disc.

[0012] As mentioned above, the multiple rivets corresponding to the upper grinding body and the multiple rivets corresponding to the lower grinding body are arranged in a staggered manner in the circumferential direction.

[0013] As described above, the pushing member includes a plurality of upper push rods arranged circumferentially on the upper grinding disc, each upper push rod slidingly arranged on the upper grinding disc along its corresponding radial direction. A plurality of lower push rods are arranged circumferentially on the lower grinding disc, each lower push rod slidingly arranged on the lower grinding disc along its corresponding radial direction. The plurality of upper push rods and the plurality of lower push rods correspond to each other one by one, and power is transmitted between the corresponding upper push rod and lower push rod through a U-shaped rod.

[0014] As described above, the upper push rod is fixedly connected to the corresponding U-shaped rod, and the lower push rod is slidably connected to the corresponding U-shaped rod along the circumferential direction; a first arc portion is provided on the portion of the U-shaped rod slidably connected to the lower push rod, and the first arc portion gives the lower push rod a radial thrust. A second arc portion is provided between two adjacent first arc portions at adjacent positions, and the second arc portion is slidably connected to the corresponding first arc portion. The plurality of first arc portions and the plurality of second arc portions together form an annular structure.

[0015] As described above, a third arc portion is provided on each of the upper push rods and each of the lower push rods. A fourth arc portion is provided between two adjacent third arc portions in the circumferential direction, and the fourth arc portion is slidably connected to the corresponding third arc portion.

[0016] As described above, the adjusting mechanism includes an axial distance adjusting component and a radial distance adjusting component. The axial distance adjusting component is used to adjust the distance between the upper grinding disc and the lower grinding disc, and the radial distance adjusting component is used to adjust the extending distance of the extending portion.

[0017] The present invention also relates to a method for preparing tea stock solution. When the tea stock solution is prepared by the tea stock solution preparation device described above, the method includes the following steps:

[0018] Step 1: Tea weighing. Weigh tea and water according to a ratio, and then put them into the grinding mechanism.

[0019] Step 2: Tea grinding. According to the required tea particle size, use the adjusting mechanism to adjust the distance between the upper grinding disc and the lower grinding disc, and the extending portion synchronously adjusts the extending distance. Subsequently, during the relative rotation of the upper grinding disc and the lower grinding disc, put the tea and water into the grinding cavity between the upper grinding disc and the lower grinding disc for grinding and crushing treatment. The monitoring mechanism monitors the grinding particle size of the tea in real time, and the adjusting mechanism adjusts the distance between the upper grinding disc and the lower grinding disc and the extending distance of the extending portion in real time based on the monitoring signal of the monitoring mechanism.

[0020] Step 3: Mixture separation. Centrifugally filter the tea mixed with water after grinding and crushing to obtain tea stock solution and tea paste, and perform sterilization treatment on them respectively and then package them.

[0021] The beneficial effects of the present invention are as follows: By monitoring the monitoring signals of the monitoring mechanism, the adjusting mechanism can adjust the distance between the upper grinding disc and the lower grinding disc in real time, and the pushing member can control the extension dimensions of the upper extension body and the lower extension body based on the power of the adjusting mechanism. That is, when the distance between the upper grinding disc and the lower grinding disc becomes larger, the extension dimensions of the upper extension body and the lower extension body increase, increasing the grinding duration of the tea leaves. When the distance between the upper grinding disc and the lower grinding disc becomes smaller, the extension dimensions of the upper extension body and the lower extension body decrease, reducing the grinding duration of the tea leaves, thereby ensuring that the particle size of the ground tea leaves remains within a suitable range. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic process flow diagram for the production of tea stock solution;

[0024] Figure 2 It is a three-dimensional structural schematic diagram of a tea stock solution preparation device provided by an embodiment of the present invention;

[0025] Figure 3 It is a cross-sectional structural schematic diagram of a tea stock solution preparation device provided by an embodiment of the present invention;

[0026] Figure 4 For Figure 3 The enlarged structural schematic diagram at A in

[0027] Figure 5 It is a plane structural schematic diagram of the upper grinding disc of a tea stock solution preparation device provided by an embodiment of the present invention;

[0028] Figure 6 It is an exploded view of the components corresponding to the upper grinding disc of a tea stock solution preparation device provided by an embodiment of the present invention;

[0029] Figure 7 It is a plane structural schematic diagram of the lower grinding disc of a tea stock solution preparation device provided by an embodiment of the present invention;

[0030] Figure 8 It is an exploded view of the components corresponding to the lower grinding disc of a tea stock solution preparation device provided by an embodiment of the present invention;

[0031] Figure 9 It is a cross-sectional structural schematic diagram when the first arc portion and the second arc portion of a tea stock solution preparation device provided by an embodiment of the present invention are engaged;

[0032] Figure 10 Schematic cross-sectional structure diagram when the third arc part and the fourth arc part of a tea stock solution preparation device provided by an embodiment of the present invention cooperate.

[0033] Explanation of reference numerals:

[0034] 1. Grinding box body; 10. Upper grinding disc; 11. Lower grinding disc; 12. Feed pipe; 13. Feed funnel; 14. Upper mounting seat; 15. Lower mounting seat; 16. Material distributing wheel; 17. Grinding cavity; 18. Rivet; 19. C-shaped rod; 2. Adjusting mechanism; 20. Spacing adjusting motor; 21. Screw sleeve; 22. Tooth disc; 23. Gear; 24. Push plate; 25. Extrusion groove; 26. Slide bar; 3. Upper extension body; 30. First block; 31. Upper push rod; 32. First elastic member; 33. Triangular block; 34. Transmission ring; 4. Lower extension body; 40. Second block; 41. Lower push rod; 42. Second elastic member; 43. First arc part; 44. Second arc part; 5. Third arc part; 6. Fourth arc part; 7. Workbench; 8. Material distributing disc; 9. Discharge channel. Detailed implementation manners

[0035] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will be combined with the attached Figure 1 to Figure 10 make a further detailed introduction to the present invention.

[0036] An embodiment of the present invention relates to a tea stock solution preparation device, including a grinding mechanism. An upper grinding disc 10 and a lower grinding disc 11 are arranged in a grinding box body 1 of the grinding mechanism. The lower grinding disc 11 rotates relative to the upper grinding disc 10 under the drive of a drive mechanism. An adjusting mechanism 2 for adjusting the distance between the upper grinding disc 10 and the lower grinding disc 11 is further arranged on the grinding box body 1. It further includes an extension part, which includes an upper extension body 3 for extending the radial dimension of the upper grinding disc 10 and a lower extension body 4 for extending the radial dimension of the lower grinding disc 11; a pushing member for controlling the extension of the upper extension body 3 and the lower extension body 4; a monitoring mechanism for monitoring the grinding particle size of tea leaves; the adjusting mechanism 2 adjusts the distance between the upper grinding disc 10 and the lower grinding disc 11 in real time based on the monitoring signal of the monitoring mechanism; the pushing member controls the extension dimensions of the upper extension body 3 and the lower extension body 4 based on the power of the adjusting mechanism 2.

[0037] Specifically, for the convenience of description and understanding, based on the fact that both the upper grinding plate 10 and the lower grinding plate 11 are disk-shaped structures, the axial direction is the axial direction of the disk-shaped structure, and the radial direction is also the radial direction of the disk-shaped structure. The grinding mechanism includes a workbench 7 and a grinding box body 1 arranged on the workbench 7. The upper grinding plate 10 is slidably arranged along the axial direction in the grinding box body 1 and cannot rotate circumferentially. That is, the upper grinding plate 10 is fixedly arranged on an upper mounting seat 14. A feed hole is provided at the center position of the upper grinding plate 10. Correspondingly, a feed pipe 12 is provided in the middle of the upper mounting seat 14, and a feed funnel 13 is installed on the feed pipe 12. The feed pipe 12 is slidably arranged along the axial direction on the grinding box body 1. The lower grinding plate 11 is rotatably arranged in the grinding box body 1 and cannot slide axially. That is, the lower grinding plate 11 is fixed on a lower mounting seat 15, and the lower mounting seat 15 is circumferentially rotatably arranged inside the mounting box body. The center of the lower mounting seat 15 is fixedly connected to the power output end of the driving mechanism. The driving mechanism can be a driving motor, and a material distributing wheel 16 is also arranged at the power output end. The cavity formed between the upper grinding plate 10 and the lower grinding plate 11 is the grinding cavity 17. During the rotation of the material distributing wheel 16, the tea leaves can be dialed around. The structures of the upper grinding plate 10 and the lower grinding plate 11 are basically the same. That is, the middle part of the upper grinding plate 10 is concave axially, and the middle part of the lower grinding plate 11 is concave axially. That is, along any radial direction away from the center position, the axial width of the grinding cavity 17 gradually decreases and gradually tends to be parallel (two parallel planes, not curved surfaces). The tea leaves are mainly ground and broken in the parallel part. During the high-speed rotation of the grinding plate 11 driven by the driving mechanism, the tea leaves in the grinding cavity 17 will move towards the position with a smaller axial width under the centrifugal action. In this way, the tea leaves will also be gradually ground and broken to a smaller particle size range by the cooperation of the upper grinding plate 10 and the lower grinding plate 11. The adjusting mechanism 2 needs to adjust the distance between the upper grinding plate 10 and the lower grinding plate 11 according to the required particle size of the tea leaves. A structure such as the cooperation of a bolt and a nut can achieve this function. This is the prior art and will not be elaborated too much here.

[0038] However, in the prior art, when adjusting the distance between the upper grinding plate 10 and the lower grinding plate 11 of the grinding machine, the corresponding parts between the two change equally in distance. That is, when expanding the distance between the upper grinding plate 10 and the lower grinding plate 11, due to the flexible characteristics of the tea leaves themselves that can deform and curl, it is easy to cause the situation that some tea leaves are not sufficiently ground. When reducing the distance between the upper grinding plate 10 and the lower grinding plate 11, it will cause the situation that some tea leaves are over-ground.

[0039] Therefore, in this embodiment, based on the above problems, an extension part is correspondingly provided, that is, an upper extension body 3 is arranged at the edge of the upper grinding disc 10, and a lower extension body 4 is arranged at the edge of the lower grinding disc 11. The upper extension body 3 and the lower extension body 4 jointly extend the part where the grinding surfaces of the upper grinding disc 10 and the lower grinding disc 11 are parallel to each other. Both the upper extension body 3 and the lower extension body 4 are made of soft materials and can be extended radially to a certain extent. That is, the radial cross-sections of the two can be regarded as having a structure of winding or a bending folding mechanism. When subjected to external forces, they can be unfolded or wound, and the elastic deformation they possess itself is to adapt to the shape changes during unfolding and winding. Moreover, one side surface is rough and is basically consistent with the grinding surface of the upper grinding disc 10, and the other side surface is smooth for contacting the pushing member. Among them, the pushing member can adjust the extension distance of the upper extension body 3 and the lower extension body 4 based on the power of the adjustment mechanism 2. That is, there is a transmission mechanism between the adjustment mechanism 2 and the pushing member. The axial distance adjustment and the radial distance adjustment of the grinding cavity 17 are adjusted synchronously in a certain proportion, which is specifically set according to the actual situation and will not be elaborated here. In this embodiment, a monitoring mechanism (such as a camera) for monitoring the grinding particle size of tea is also provided in the grinding box 1. In this way, the adjustment mechanism 2 can adjust the distance between the upper grinding disc 10 and the lower grinding disc 11 in real time according to the change in the particle size of the tea after grinding. Correspondingly, the pushing member can also adjust the extension size of the upper grinding body and the lower grinding body based on the power of the adjustment mechanism 2, so as to ensure that the particle size of the tea being ground is kept within a suitable range.

[0040] A material distributing disc 8 is provided in the grinding box 1. The material distributing disc 8 rotates together with the lower grinding disc 11 to push the ground and crushed tea to the discharge channel 9 to discharge the grinding box 1.

[0041] The beneficial effect of this embodiment is that: through the monitoring signal of the monitoring mechanism, the adjustment mechanism 2 can adjust the distance between the upper grinding disc 10 and the lower grinding disc 11 in real time, and the pushing member can control the extension size of the upper extension body 3 and the lower extension body 4 based on the power of the adjustment mechanism 2. That is, when the distance between the upper grinding disc 10 and the lower grinding disc 11 becomes larger, the extension size of the upper extension body 3 and the lower extension body 4 increases, increasing the grinding time of the tea. When the distance between the upper grinding disc 10 and the lower grinding disc 11 becomes smaller, the extension size of the upper extension body 3 and the lower extension body 4 decreases, reducing the grinding time of the tea, so as to ensure that the particle size of the tea being ground is kept within a suitable range.

[0042] Preferably, the upper extension body 3 is annular, and one axial end is mounted on the grinding surface of the upper grinding disk 10 by a plurality of rivets 18, and a plurality of first blocks 30 are sequentially arranged in the circumferential direction of the other end. The plurality of first blocks 30 are slidably arranged in their respective corresponding radial directions on the side of the upper grinding disk 10 away from the grinding surface, and each first block 30 is provided with a first elastic member 32 between the upper grinding disk 10 and the first block 30 in the sliding direction.

[0043] Specifically, the multiple first blocks 30 drive the upper extension body 3 at multiple points in the circumferential direction, that is, each first block 30 generates a pulling force on the upper extension body 3 based on the elastic force of the corresponding first elastic member 32, so that the upper extension body 3 has a tendency to roll up, that is, the extension size is shrinking, and the pushing member is used to control the extension size of the upper extension body 3 to become larger, that is, the pushing member includes a plurality of upper push rods 31 arranged in sequence along the circumferential direction on the upper grinding disk 10, each upper push rod 31 is slidably arranged on the upper grinding disk 10 along its corresponding radial direction, and the multiple upper push rods 31 correspond one by one to the multiple first blocks 30, one end of each upper push rod 31 abuts against the side of the upper extension body 3 away from the grinding surface, and the part of the upper extension body 3 where the upper push rod 31 applies force is curved, and the position of the upper push rod 31 changes, and the curved part of the upper extension body 3 changes accordingly.

[0044] Preferably, the lower grinding body is annular, and one axial end is mounted on the grinding surface of the lower grinding disk 11 by a plurality of rivets 18, and a plurality of second blocks 40 are sequentially arranged in the circumferential direction of the other end. The plurality of second blocks 40 are slidably arranged in the corresponding radial directions on the side of the lower grinding disk 11 away from the grinding surface, and each second block 40 is provided with a second elastic member 42 between the lower grinding disk 11 and the second block 40 in the sliding direction; the plurality of first blocks 30 correspond one-to-one to the plurality of second blocks 40 in the axial direction.

[0045] Specifically, the plurality of second blocks 40 drive the lower extension body 4 at multiple points in the circumferential direction, that is, each second block 40 generates a pulling force on the lower extension body 4 based on the elastic force of the second elastic member 42 corresponding to itself, so that the lower extension body 4 has a tendency to roll up, that is, the extension size is shrinking, and the push member is used to control the extension size of the lower extension body 4 to increase, that is, the push member also includes a plurality of lower push rods 41 arranged along the circumferential direction on the lower grinding disk 11, each lower push rod 41 is slidably arranged on the lower grinding disk 11 along its corresponding radial direction, and the plurality of lower push rods 41 and the plurality of second blocks 40 In one-to-one correspondence, one end of each lower push rod 41 rests on the side of the lower extension part away from the grinding surface, and the part of the lower extension body 4 where the force is applied by the lower push rod 41 is also curved. As the position of the lower push rod 41 changes, the curved part of the lower extension body 4 changes accordingly, wherein multiple first blocks 30 correspond one-to-one with multiple second blocks 40, multiple upper push rods 31 correspond one-to-one with multiple lower push rods 41, and the corresponding upper push rods 31 and lower push rods 41 transmit power through the 匚-shaped rod 19, that is, the extension size changes of the upper extension body 3 and the lower extension body 4 can be kept basically synchronized.

[0046] Each 匚-shaped rod 19 is a split structure, and the two parts are connected by plugging. The grinding box 1 is also a split structure, that is, the grinding box 1 is divided into an upper part and a lower part. When the grinding cavity 17 needs to be cleaned, the upper part and the lower part are separated, and the two parts of the 匚-shaped rod 19 can also be separated.

[0047] In an alternative embodiment, the adjusting mechanism 2 includes an axial distance adjusting component and a radial distance adjusting component. The axial distance adjusting component is used to adjust the distance between the upper grinding disc 10 and the lower grinding disc 11, and the radial distance adjusting component is used to adjust the extending distance of the extending part. The axial distance adjusting mechanism includes a distance adjusting motor 20 arranged on the upper part of the grinding box body 1. The axial direction of the power output shaft of the distance adjusting motor 20 is parallel to the axial direction of the upper grinding disc 10, and the power output shaft of the distance adjusting motor 20 is a telescopic structure. A thread is arranged on its extending section. A screw sleeve 21 screwed with the extending section is provided on the upper part of the grinding box body 1. A toothed disc 22 is rotatably installed on the feed pipe 12. A gear 23 is installed at the end of the extending section. The gear 23 meshes with the toothed disc 22. A push plate 24 is installed on each side of the gear 23 in the axial direction. The toothed disc 22 is located between the two push plates 24. A plurality of extrusion grooves 25 are arranged on the toothed disc 22 in the circumferential direction. A sliding rod 26 is slidably arranged in each extrusion groove 25. Each upper push rod 31 is connected to a sliding rod 26. That is, during the circumferential rotation of the toothed disc 22, the extrusion groove 25 will exert an extrusion effect on the connected sliding rod 26, causing the sliding rod 26 to move along its corresponding radial direction. In this way, each sliding rod 26 will drive the upper push rod 31 connected to it to exert an extending thrust on the upper extending body 3. The power is transmitted between each upper push rod 31 and the corresponding lower push rod 41 through a U-shaped rod 19. Then, the upper extending body 3 and the lower extending body 4 will be driven to extend synchronously. When adjusting the distance between the upper grinding disc 10 and the lower grinding disc 11, the power output shaft of the distance adjusting motor 20 rotates, causing a relative rotation between the extending section and the screw sleeve 21. Then, the power output shaft of the distance adjusting motor 20 undergoes a telescopic change, which will drive the toothed disc 22 to move axially through the two push plates 24. The axial movement of the toothed disc 22 will drive the upper grinding disc 10 to move axially. In this way, the distance between the upper grinding disc 10 and the lower grinding disc 11 can be adjusted. At the same time, the rotation of the gear 23 drives the toothed disc 22 to rotate in the opposite direction. The rotation of the toothed disc 22 causes each extrusion groove 25 to exert an extrusion effect on its corresponding sliding rod 26. Each sliding rod 26 will drive the upper push rod 31 connected to it to move along its corresponding radial direction. Thus, the extending dimensions of the upper extending body 3 and the lower extending body 4 can be adjusted. The distance adjustment dimension between the upper grinding disc 10 and the lower grinding disc 11 is in a certain proportion to the extending dimensions of the upper extending body 3 and the lower extending body 4, which is specifically set according to actual applications and will not be elaborated here too much.

[0048] Further, each rivet 18 for connecting the upper extending body 3 and the upper grinding disc 10 protrudes from the grinding surface of the upper grinding disc 10; each rivet 18 for connecting the lower extending body 4 and the lower grinding disc 11 protrudes from the grinding surface of the lower grinding disc 11.

[0049] Specifically, since the grinding surface of the upper grinding plate 10 is concave axially upward and the grinding surface of the lower grinding plate 11 is concave axially downward, the axial width of the grinding cavity 17 between the two gradually decreases in any radial direction away from the central position. For the grinding and crushing of tea leaves, it is carried out between the grinding surfaces at the edges of the upper grinding plate 10 and the lower grinding plate 11. During the process of the tea leaves being thrown to the edge part of the grinding space due to centrifugal force, the agglomerated tea leaves may collide with the protruding rivets 18. Thus, the arrangement of multiple rivets 18 can achieve the effect of breaking up the agglomerated tea leaves.

[0050] Furthermore, the multiple rivets 18 corresponding to the upper grinding body and the multiple rivets 18 corresponding to the lower grinding body are arranged in a staggered manner circumferentially; specifically, since the movement direction of the agglomerated tea leaves is difficult to determine and the sizes of the agglomerates vary, the multiple rivets 18 corresponding to the upper grinding body and the multiple rivets 18 corresponding to the lower grinding body are arranged in a staggered manner circumferentially. Thus, the probability of the agglomerated tea leaves colliding with the rivets 18 can be further improved.

[0051] In an optional embodiment, a number of triangular blocks 33 are also arranged circumferentially on the upper extension body 3. The distance between adjacent triangular blocks 33 is smaller than the distance between adjacent two rivets 18. During the grinding process of the tea leaves, there are still cases of agglomeration. Then, the number of triangular blocks 33 will break up the agglomerated tea leaves. And the number of triangular blocks 33 is arranged on the upper extension body 3, that is, the tea leaves thrown from the lower grinding plate 11 to the edge of the grinding cavity 17 due to centrifugal force will collide with the triangular blocks 33 along the concave and inclined direction of the lower grinding plate 11, so as to better break up the agglomerated tea leaves; and further, each triangular block 33 is rotatably arranged on the upper extension body 3, a transmission ring 34 is rotatably arranged on the upper grinding plate 10, and the transmission ring 34 is in rolling friction contact with the rotation axis of each triangular block 33. Each upper push rod 31 is also in rolling friction contact with the rotation axis of the corresponding triangular block 33. Thus, during the process of the upper push rod 31 moving along its corresponding radial direction, the corresponding triangular block 33 will rotate. Under the driving action of the transmission ring 34, multiple triangular blocks 33 will rotate together. Thus, the problem of tea leaves being blocked between adjacent two triangular blocks 33 can be solved.

[0052] Preferably, the upper push rod 31 is fixedly connected to the corresponding C-shaped rod 19, and the lower push rod 41 is slidably connected to the corresponding C-shaped rod 19 circumferentially; a first arc portion 43 is provided on the part where the C-shaped rod 19 is slidably connected to the lower push rod 41. The first arc portion 43 gives the lower push rod 41 a radial thrust. A second arc portion 44 is provided between two adjacent first arc portions 43 at adjacent positions. The second arc portion 44 is slidably connected to the corresponding first arc portion 43. A number of first arc portions 43 and a number of second arc portions 44 together form an annular structure.

[0053] Specifically, since the lower grinding disk 11 needs to rotate, the lower extension body 4 needs to rotate therewith. Then, each lower push rod 41 needs to maintain the extension dimension of the lower extension body 4 and necessarily rotate therewith. Thus, the connection manner between the U-shaped rod 19 and each lower push rod 41 needs to be set as a sliding contact. That is, a first arc portion 43 is provided at the corresponding end of each U-shaped rod 19 and the lower push rod 41, and a second arc portion 44 is slidably arranged between two adjacent first arc portions 43. Moreover, during the axial movement of each lower push rod 41, the lower push rod 41 contacts not only the first arc portion 43 but also the second arc portion 44. That is, in the radial direction, if the adjusting mechanism 2 does not apply a force, the position of the lower push rod 41 remains stationary in the radial direction, so that the extension dimension of the lower extension body 4 can be stably maintained.

[0054] Further, a third arc portion 5 is provided on each upper push rod 31 and each lower push rod 41, and a fourth arc portion 6 is provided between two circumferentially adjacent third arc portions 5. The fourth arc portion 6 is slidably connected to the corresponding third arc portion 5.

[0055] Specifically, the contact area between the upper push rod 31 and the upper extension portion needs to be increased, and the contact area between the lower push rod 41 and the lower extension portion also needs to be increased, so as to ensure that the edges of the upper extension body 3 and the lower extension body 4 can be basically circular after extension. In this way, the time for the tea leaves to be thrown out and ground and broken at any position in the grinding cavity 17 can be kept basically the same. That is, in this embodiment, a third arc portion 5 is provided on each upper push rod 31 and each lower push rod 41, and a fourth arc portion 6 is provided between two circumferentially adjacent third arc portions 5. The fourth arc portion 6 is slidably connected to the corresponding third arc portion 5. That is, a plurality of third arc portions 5 and the corresponding plurality of fourth arc portions 6 can jointly form a ring. In this way, whether it is the upper extension body 3 or the lower extension body 4, when being pushed and extended, the edges can be basically kept circular.

[0056] Another embodiment of the present invention further relates to a method for preparing tea stock solution. When the tea stock solution is prepared by the above-mentioned tea stock solution preparation device, the method includes the following steps:

[0057] Step 1: Tea weighing. Weigh tea leaves and water in proportion and then put them into the grinding mechanism.

[0058] Step 2: Tea leaf grinding. According to the tea leaf particle size requirement, use the adjusting mechanism 2 to adjust the distance between the upper grinding disc 10 and the lower grinding disc 11, and the extension part synchronously adjusts the extension distance. Subsequently, during the relative rotation of the upper grinding disc 10 and the lower grinding disc 11, the tea leaves and water are put into the grinding cavity 17 between the upper grinding disc 10 and the lower grinding disc 11 for grinding and crushing treatment. The monitoring mechanism monitors the grinding particle size of the tea leaves in real time, and the adjusting mechanism 2 adjusts the distance between the upper grinding disc 10 and the lower grinding disc 11 and the extension distance of the extension part in real time based on the monitoring signal of the monitoring mechanism;

[0059] Step 3: Mixture separation. Centrifugally filter the tea leaves mixed with water after grinding and crushing to obtain tea stock solution and tea paste, and then perform sterilization treatment on them respectively before packaging.

[0060] Only some exemplary embodiments of the present invention are described above by way of illustration. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims

1. A preparation device for tea stock solution, comprising a grinding mechanism. In the grinding box body of the grinding mechanism, there is an upper grinding disc and a lower grinding disc. The lower grinding disc forms a relative rotation with the upper grinding disc under the drive of a drive mechanism. The grinding box body is also provided with an adjusting mechanism for adjusting the distance between the upper grinding disc and the lower grinding disc, and is characterized in that, Also includes: The extension part includes an upper extension body for extending the radial dimension of the upper grinding disc and a lower extension body for extending the radial dimension of the lower grinding disc; and also includes a pusher for controlling the extension of the upper extension body and the extension of the lower extension body; The monitoring mechanism is used to monitor the grinding particle size of tea leaves; the regulating mechanism adjusts the distance between the upper grinding disc and the lower grinding disc in real time based on the monitoring signal of the monitoring mechanism; and the pushing member controls the extension size of the upper extension body and the lower extension body based on the power of the regulating mechanism.

2. The preparation device of the tea stock solution according to claim 1, characterized in that, The upper extension body is annular, and one axial end is mounted on the grinding surface of the upper grinding disk by a plurality of rivets, and the other end is provided with a plurality of first blocks in sequence in the circumferential direction. The plurality of first blocks are slidably arranged in the corresponding radial directions on the side of the upper grinding disk away from the grinding surface, and each first block is provided with a first elastic member between the first block and the upper grinding disk in the sliding direction.

3. The preparation apparatus of the tea stock solution according to claim 2, characterized in that, The lower grinding body is annular, and one axial end is installed on the grinding surface of the lower grinding disk by multiple rivets, and the other end is sequentially provided with multiple second blocks in the circumferential direction. The multiple second blocks are slidably arranged on the side of the lower grinding disk away from the grinding surface in their respective corresponding radial directions, and each second block is provided with a second elastic member between the lower grinding disk and the sliding direction; the multiple first blocks correspond one-to-one with the multiple second blocks in the axial direction.

4. The preparation device of the tea stock solution according to claim 3, characterized in that, Each rivet used to connect the upper extension body with the upper grinding disc protrudes from the grinding surface of the upper grinding disc; each rivet used to connect the lower extension body with the lower grinding disc protrudes from the grinding surface of the lower grinding disc.

5. The preparation device of the tea stock solution according to claim 4, characterized in that, The multiple rivets corresponding to the upper grinding body and the multiple rivets corresponding to the lower grinding body are arranged in a staggered manner in the circumferential direction.

6. The preparation device of the tea stock solution according to claim 3, characterized in that, The pushing member includes a plurality of upper push rods arranged in sequence along the circumferential direction on the upper grinding disk, each of the upper push rods is slidably arranged on the upper grinding disk along its corresponding radial direction, and a plurality of lower push rods are arranged circumferentially on the lower grinding disk, each of the lower push rods is slidably arranged on the lower grinding disk along its corresponding radial direction. The plurality of upper push rods correspond to the plurality of lower push rods one by one, and power is transmitted between the corresponding upper push rods and the lower push rods through a 匚-shaped rod.

7. The preparation device of the tea stock solution according to claim 6, characterized in that, The upper push rod is fixedly connected to the corresponding 匚-shaped rod, and the lower push rod is slidably connected to the corresponding 匚-shaped rod along the circumferential direction; the part where the 匚-shaped rod is slidably connected to the lower push rod is provided with a first arc portion, and the first arc portion gives the lower push rod a radial thrust, and a second arc portion is provided between two first arc portions at adjacent positions, and the second arc portion is slidably connected to the corresponding first arc portion, and several first arc portions and multiple second arc portions together form an annular structure.

8. The preparation device of the tea stock solution according to claim 6, characterized in that, Each of the upper push rods and each of the lower push rods is provided with a third arc portion, a fourth arc portion is provided between two circumferentially adjacent third arc portions, and the fourth arc portion is slidably connected to the corresponding third arc portion.

9. The preparation device of the tea stock solution according to claim 6, characterized in that, The adjustment mechanism comprises an axial distance adjustment component and a radial distance adjustment component. The axial distance adjustment component is used to adjust the distance between the upper grinding disc and the lower grinding disc, and the radial distance adjustment component is used to adjust the extension distance of the extension part.

10. A method for preparing a tea stock solution, based on the tea stock solution preparation device according to any one of claims 1-9, characterized in that, The preparation method of the tea stock solution comprises the following steps: Tea metering: measuring tea leaves and water in proportion and then feeding them into the grinding mechanism; Tea leaf grinding. According to the requirements of tea leaf particle size, use the adjusting mechanism to adjust the distance between the upper grinding disc and the lower grinding disc, and the extension part synchronously adjusts the extension distance. Subsequently, during the relative rotation of the upper grinding disc and the lower grinding disc, put the tea leaves and water into the grinding cavity between the upper grinding disc and the lower grinding disc for grinding and crushing treatment. The monitoring mechanism monitors the grinding particle size of the tea leaves in real time, and the adjusting mechanism adjusts the distance between the upper grinding disc and the lower grinding disc and the extension distance of the extension part in real time based on the monitoring signal of the monitoring mechanism; Mixture separation. Centrifugally filter the tea leaves mixed with water after grinding and crushing to obtain tea stock solution and tea paste, and perform sterilization treatment on them respectively before packaging.

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