Green tea aroma enhancement and freshness preservation processing equipment and technology

Abstract

The present invention relates to the technical field of tea making, and specifically to a processing device for enhancing the flavor and preserving green tea, which includes a support frame, a kneading disk, a guide sheet, a kneading barrel, a rotating assembly, a pressure cover and an air blowing system. The present invention sets an inclined guide sheet on the upper side of the kneading disk, thereby guiding the tea leaves leaking out of the kneading barrel to the inner side of the kneading disk, thereby increasing the contact frequency between the tea leaves and the lower end of the kneading barrel, and then enabling the leaked tea leaves to be fully kneaded, thereby optimizing the kneading effect. In addition, the present invention also proposes a processing technology for enhancing the flavor and preserving green tea, using the processing equipment for enhancing the flavor and preserving green tea proposed by the present invention, hot kneading the tea leaves under hot air conditions of 70-80°C, then drying them at 85-90°C for 20 minutes, and drying them with hot air at 87°C after standing for 5-6 hours, thereby obtaining tea leaves with a moisture content of 3%. Compared with the existing processing technology, the tea leaves obtained by the processing technology proposed by the present invention are drier.

Description

Technical Field

[0001] The invention relates to the technical field of tea making, and in particular to processing equipment and technology for enhancing the aroma and preserving the freshness of green tea. Background Art

[0002] Rolling is one of the key steps in the tea making process, which directly affects the appearance, internal quality and preservation of tea. Through a reasonable rolling process, the tea can be made tight and curved, glossy in color, rich in aroma and mellow in taste, thus improving the overall quality of tea.

[0003] The rolling methods include manual rolling and mechanical rolling. Manual rolling can flexibly adjust the strength and time according to the specific conditions of the tea leaves, but the rolling efficiency is low and it is suitable for small-scale production. The more efficient mechanical rolling has become the mainstream method, which simulates the manual rolling action to roll the tea leaves quickly and evenly. For example, Chinese patent document No. CN116458557A discloses a tea rolling machine. During the rolling process, some tea leaves leak out from the gap at the bottom of the rolling barrel and cannot be fully rolled. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention proposes a processing equipment for enhancing the flavor and preserving the freshness of green tea. The device can solve the problem of inadequate rolling caused by some tea leaves leaking out of the rolling barrel. In addition, the present invention also proposes a processing technology for enhancing the flavor and preserving the freshness of green tea. The green tea processed by this technology is drier.

[0005] The green tea aroma enhancement and freshness preservation processing equipment of the present invention adopts the following technical scheme: comprising a support frame, a kneading disk, a guide sheet, a kneading barrel, a rotary assembly, a pressure cover and an air blowing system;

[0006] The kneading disk is fixedly connected to the support frame, a baffle ring is fixedly connected to the peripheral wall of the kneading disk, and a plurality of arc-shaped first ribs are evenly distributed on the upper surface of the kneading disk along the circumferential direction; the direction close to the axis of the kneading disk is designated as the inner side, and the direction away from the axis of the kneading disk is designated as the outer side; a discharge port is opened in the middle of the kneading disk, and a baffle is detachably installed at the discharge port; a connecting ring is coaxially installed above the kneading disk, the connecting ring is horizontally arranged, and the inner wall of the connecting ring is flush with the discharge port;

[0007] There are multiple guide pieces, and the number of guide pieces is consistent with the number of first ribs; the guide piece is installed between two adjacent first ribs, and there is a gap between the two adjacent guide pieces, and the gap is opposite to the first rib; the inner side of the guide piece is fixedly connected to the connecting ring, and the guide piece is inclined, and its inner end is lower than the outer end; the guide piece can be elastically deformed, so that when the kneading barrel contacts the guide piece, the guide piece moves downward as a whole, and because the guide piece is in an inclined state, the distance that the outer end of the guide piece moves downward is greater than the distance that the inner end moves downward, and the first rib extends out of the gap between two adjacent guide pieces; the kneading disk is equipped with a plurality of support members, and the support members are used to make the guide piece have a tendency to maintain an initial state;

[0008] A kneading barrel is eccentrically arranged above the guide piece and is used to accommodate tea leaves to be kneaded. The kneading barrel is connected to a rotating assembly, which is used to drive the kneading barrel to perform eccentric rotating motion, and the kneading barrel rotates in a direction such that the tea leaves in the kneading barrel contact the concave surface of the first rib.

[0009] The gland is connected to the support frame so as to be movable up and down, and the gland is connected to a vertical driving assembly for driving the gland to move up and down;

[0010] The air blowing system is used to blow hot air into the kneading barrel.

[0011] Optionally, the blowing system includes a blower, an air duct and multiple vents. The blower is installed under the kneading disk. The multiple vents are distributed circumferentially on the kneading disk. An air duct is connected between the blower and the vents. The width of the upper end of the first rib is greater than the width of the lower end, and the upper and lower widths of the gap between two adjacent guide plates are consistent.

[0012] Optionally, a plurality of vibration components are provided on the kneading disk, and the vibration components are used to vibrate the guide plate when the overlapping area between the guide plate and the kneading barrel on the horizontal plane increases from a preset value to a maximum value and decreases from the maximum value to a preset value.

[0013] Optionally, the outer end of the guide piece is fixedly connected to a side block, and when the overlapping area of ​​the projection of the guide piece and the kneading barrel on the horizontal plane is greater than a preset value, the outer end face of the side block is in a vertical state, and the outer end face of the side block abuts against the inner circumferential wall of the retaining ring; a plurality of accommodating grooves are provided on the inner circumferential wall of the retaining ring, and the accommodating grooves extend along the radial direction of the kneading disk, and the accommodating grooves are arranged one by one corresponding to the guide piece; the vibration component includes a ball, a vibration spring and a groove, and the ball can be installed in the accommodating groove so as to be movably installed in the radial direction of the kneading disk, and the inner end of the ball is a hemispherical surface; the vibration spring is horizontally arranged in the accommodating groove, and the two ends of the vibration spring are respectively connected to the ball and the accommodating groove, and the vibration spring has a tendency to move the ball toward the axis of the kneading disk; the groove is provided on the outer end face of the side block, and the ball can be inserted into the groove during the vertical movement of the side block.

[0014] Optionally, a plurality of grooves are provided on the outer end face of each edge block. When the outer end face of the edge block abuts against the inner circumferential wall of the retaining ring, the plurality of grooves are spaced apart in the vertical direction. During the vertical movement of the edge block, the pins can be inserted into the plurality of grooves in sequence.

[0015] Optionally, the upper surface of the edge block includes a first slope and a second slope. When the guide piece is in a natural state, the first slope is higher inside and lower outside, and the second slope is lower inside and higher outside, and the second slope has a smooth transition with the upper surface of the guide piece. An abutment ring is fixedly connected to the inner wall of the retaining ring, and the lower surface of the abutment ring is a third slope, which is higher inside and lower outside. In the natural state, the first slope and the third slope have the same inclination.

[0016] Optionally, an air duct is provided in the middle of the edge block, the air duct is perpendicular to the outer end surface of the edge block and passes through the edge block, and the width of the air duct in the thickness direction of the edge block is less than 1 / 10 of the thickness of the edge block.

[0017] Optionally, the baffle is circular and coaxial with the kneading disk; a plurality of arc-shaped second ribs are evenly distributed along the axial direction on the upper surface of the baffle; and the bending direction of the second ribs is opposite to that of the first ribs.

[0018] Optionally, the support member is a support spring, and a support spring is fixedly connected below each guide plate, and the lower end of the support spring is fixedly connected to the kneading disk.

[0019] The processing technology of green tea for aroma enhancement and freshness preservation of the present invention comprises the following steps:

[0020] S1: using the green tea aroma enhancement and freshness preservation processing equipment proposed by the present invention, hot rolling is performed under the condition of 70-80°C hot air;

[0021] S2: Drying in a single-layer mesh belt dryer at 85-90°C for 20 minutes;

[0022] S3: Leave for 5-6 hours;

[0023] S4: Dry with hot air at 87°C.

[0024] The beneficial effect of the present invention is that a processing equipment for enhancing the flavor and preserving the freshness of green tea of ​​the present invention provides an inclined guide plate on the upper side of the kneading disk, thereby guiding the tea leaves leaking out of the kneading barrel to the inner side of the kneading disk, thereby increasing the contact frequency between the tea leaves and the lower end of the kneading barrel, and then enabling the leaked tea leaves to be fully kneaded, thereby optimizing the kneading effect.

[0025] Furthermore, by setting a vibration component to make the guide plate vibrate during the kneading process, the tea leaves adhering to the guide plate are vibrated away so that they are no longer adhered to the guide plate. After that, the tea leaves can move along the inclined upper surface of the guide plate toward the axis of the kneading disk, further optimizing the kneading effect.

[0026] Furthermore, by providing an air duct in the middle of the side plate, after the guide plate returns to its natural state, the outer end of the air duct is connected with the air cavity below the guide plate, and the hot air passes through the air duct from the air cavity and blows toward the tea leaves above the guide plate, thereby causing the tea leaves leaking from the kneading barrel to be blown toward the inner side of the kneading disk, further optimizing the kneading effect.

[0027] The processing technology for enhancing the flavor and preserving the freshness of green tea of ​​the present invention uses the processing equipment for enhancing the flavor and preserving the freshness of green tea proposed by the present invention, hot rolling the tea leaves under the condition of hot air at 70-80°C, then drying them at 85-90°C for 20 minutes, leaving them for 5-6 hours and then drying them with hot air at 87°C, so as to obtain tea leaves with a water content of 3%. Compared with the existing processing technology, the tea leaves obtained by the processing technology proposed by the present invention are drier. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 It is a schematic diagram of the structure of the kneading disk and the guide sheet in the present invention;

[0031] Figure 3 for Figure 2 A cross-sectional view of the structure;

[0032] Figure 4 The overlapping area between the guide sheet and the kneading barrel in the projection on the horizontal plane is the minimum value. Figure 3 Enlarged view of point A in the middle;

[0033] Figure 5 When the overlapping area of ​​the projection of the guide sheet and the kneading barrel on the horizontal plane is the preset value Figure 3 Enlarged view of point A in the middle;

[0034] Figure 6 The overlapping area of ​​the guide sheet and the kneading barrel on the horizontal plane in the present invention is the maximum value. Figure 3 Enlarged view of point A in the middle;

[0035] Figure 7 It is a schematic diagram of the structure of the guide piece and the connecting ring in the present invention;

[0036] Figure 8 It is a structural schematic diagram of the kneading disk in the present invention;

[0037] Fig. 9 for Figure 8 Enlarged view of point B in the middle.

[0038] In the figure: 100, support frame; 200, kneading disk; 201, discharge port; 202, installation groove; 210, baffle ring; 211, accommodating groove; 220, first rib; 230, baffle; 231, second rib; 240, support spring; 250, abutment ring; 251, third inclined plane; 300, guide plate; 310, connecting ring; 320, side block; 321, first inclined plane; 322, second inclined plane; 400, kneading barrel; 500, rotating assembly; 600, pressure cover; 610, vertical drive assembly; 710, vent; 720, air duct; 800, vibration assembly; 810, marbles; 820, vibration spring; 830, groove. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0040] like Figures 1 to 9 As shown, a green tea flavoring and preservation processing device provided by an embodiment of the present invention includes a support frame 100, a kneading disk 200, a guide sheet 300, a kneading barrel 400, a rotating assembly 500, a pressure cover 600 and a blast system;

[0041] The kneading disk 200 is fixedly connected to the support frame 100, a baffle ring 210 is fixedly connected to the peripheral wall of the kneading disk 200, and a plurality of arc-shaped first ribs 220 are evenly distributed on the upper surface of the kneading disk 200 along the circumferential direction; the direction close to the axis of the kneading disk 200 is designated as the inner side, and the direction away from the axis of the kneading disk 200 is designated as the outer side; a discharge port 201 is opened in the middle of the kneading disk 200, and a baffle 230 is detachably installed at the discharge port 201; a connecting ring 310 is coaxially installed above the kneading disk 200, and the connecting ring 310 is horizontally arranged, and the inner wall of the connecting ring 310 is flush with the discharge port 201;

[0042] The guide pieces 300 are provided in plurality, and the number of the guide pieces 300 is consistent with the number of the first ribs 220; the guide piece 300 is installed between two adjacent first ribs 220, and there is a gap between the two adjacent guide pieces 300, and the gap is directly opposite to the first rib 220; the inner side of the guide piece 300 is fixedly connected to the connecting ring 310, and the guide piece 300 is inclined, and its inner end is lower than the outer end; the guide piece 300 can be elastically deformed so that when the kneading barrel 400 contacts the guide piece 300, the guide piece 300 moves downward as a whole. Since the guide piece 300 is in an inclined state, the distance the outer end of the guide piece 300 moves downward is greater than the distance the inner end moves downward, and the first rib 220 extends out of the gap between two adjacent guide pieces 300; the kneading disk 200 is installed with a plurality of support members, and the support members are used to make the guide piece 300 have a tendency to maintain the initial state;

[0043] The rolling barrel 400 is eccentrically disposed above the guide piece 300 and is used to accommodate tea leaves to be rolled. The rolling barrel 400 is connected to a rotating assembly 500, which is used to drive the rolling barrel 400 to perform an eccentric rotating motion, and the rotating direction of the rolling barrel 400 makes the tea leaves in the rolling barrel 400 contact the concave surface of the first rib 220.

[0044] The gland 600 is connected to the support frame 100 so as to be movable up and down. The gland 600 is connected to a vertical driving assembly 610 for driving the gland 600 to move up and down.

[0045] The air blowing system is used to blow hot air into the kneading barrel 400 .

[0046] The withered tea leaves are evenly poured into the kneading barrel 400, and the pressure cover 600 is driven to move downward by the vertical driving assembly 610. When the lower surface of the pressure cover 600 contacts the tea leaves, the pressure cover 600 continues to move downward to apply pressure to the tea leaves. Thereafter, the rotating assembly 500 and the air blowing system are started. The rotating assembly 500 mobilizes the kneading barrel 400 to rotate eccentrically, and the air blowing system blows hot air into the kneading barrel 400. The downward pressing distance of the pressure cover 600, the rotation speed of the rotating assembly 500 and the air blowing speed of the air blowing system can be adjusted according to the variety of tea leaves. The greater the downward moving distance of the pressure cover 600, the greater the pressure of the pressure cover 600 on the tea leaves.

[0047] The kneading barrel 400 drives the tea leaves to continuously roll and flip in the drum during the rotary motion. The kneading barrel 400 applies downward pressure to the guide sheet 300 in contact with it, and the overlapping area of ​​the guide sheet 300 and the kneading barrel 400 on the horizontal plane increases from the minimum value to the maximum value, and then decreases from the maximum value to the minimum value. When the overlapping area of ​​the guide sheet 300 and the kneading barrel 400 on the horizontal plane is greater than the preset value, the guide sheet 300 undergoes elastic deformation, and the guide sheet 300 moves downward as a whole, and the distance that the outer end of the guide sheet 300 moves downward is greater than the distance that the inner end moves downward, and the upper surface of the guide sheet 300 is lower than the upper surface of the first rib 220. While the tea leaves flip and roll in the kneading barrel 400, they are continuously rubbed between the kneading barrel 400 and the first rib 220 that is extended out of the gap to complete the kneading. In this process, the cell wall of the tea leaves is twisted and broken, and the tea juice is squeezed out and attached to the surface of the tea leaves. At the same time, the shape of the tea leaves gradually changes to form a specific strip, spherical or other shape. The hot air in the rolling barrel 400 assists the rolling. During the rolling process, the tea leaves in the rolling barrel 400 come into contact with the concave surface of the first rib 220 , and the first rib 220 guides the tea leaves to the middle of the rolling barrel 400 .

[0048] As the kneading barrel 400 continues to rotate, when the overlapping area of ​​the projection of the guide piece 300 and the kneading barrel 400 on the horizontal plane is less than a preset value, the guide piece 300 returns to its natural state under the action of the support; during the kneading process, the tea leaves leaking from the gap at the bottom of the kneading barrel 400 move along the inclined upper surface of the guide piece 300 toward the axis of the kneading disk 200 under the action of gravity; after the kneading is completed, the baffle 230 is removed and the tea leaves are taken out from the discharge port 201.

[0049] When using a traditional kneading machine, part of the tea leaves leak out from the gap at the lower end of the kneading barrel 400 during the kneading process. In the subsequent kneading process, the tea leaves outside the kneading barrel 400 cannot be fully kneaded, especially the tea leaves outside the kneading disk 200. The tea leaves outside have less contact with the kneading barrel 400, and the kneading effect is worse. The present invention provides an inclined guide plate 300 on the upper side of the kneading disk 200, thereby guiding the tea leaves leaking out of the kneading barrel 400 to the inner side of the kneading disk 200, thereby increasing the contact frequency between the tea leaves and the lower end of the kneading barrel 400, thereby enabling the leaked tea leaves to be fully kneaded and optimizing the kneading effect.

[0050] In a further embodiment, Figure 4 , Figure 5 , Figure 6 , Figure 8As shown, the blowing system includes a blower, an air duct and a plurality of vents 710. The blower is installed below the kneading disk 200. The plurality of vents 710 are distributed circumferentially on the kneading disk 200. An air duct is connected between the blower and the vents 710. The width of the upper end of the first rib 220 is greater than that of the lower end, and the upper and lower widths of the gap between two adjacent guide plates 300 are consistent.

[0051] The withered tea leaves are poured into the kneading barrel 400, and the pressure cover 600 is driven downward by the vertical driving assembly 610 to apply pressure to the tea leaves; thereafter, the rotating assembly 500 and the blower are started, and the rotating assembly 500 drives the kneading barrel 400 to rotate eccentrically, and the blower blows out hot air, which enters between the kneading disk 200 and the guide piece 300 through the air duct from the vent 710; in the process of the kneading barrel 400 rotating, the tea leaves are driven to move, and when the overlapping area of ​​the projection of the guide piece 300 and the kneading barrel 400 on the horizontal plane is greater than a preset value, the guide piece 300 undergoes elastic deformation, and the guide piece 300 moves downward as a whole, and the outer end of the guide piece 300 moves downward a greater distance than the inner end moves downward The moving distance is that the width of the upper end of the first rib 220 is greater than the width of the lower end, but the upper and lower widths of the gap between two adjacent guide sheets 300 are consistent. Therefore, when the guide sheet 300 is in a natural state, the first rib 220 blocks the gap between the two adjacent guide sheets 300. After the guide sheet 300 moves downward, the guide sheet 300 and the narrower lower part of the first rib 220 are located in the same horizontal plane, and there is a gap between the first rib 220 and the two adjacent guide sheets 300. The hot air between the guide sheet 300 and the kneading disk 200 flows upward from the gap and enters the kneading barrel 400, which assists the kneading work, ensures the internal temperature of the kneading barrel 400, reduces the loss of hot air, and saves energy.

[0052] In a further embodiment, a plurality of vibration components 800 are provided on the kneading disk 200, and the vibration components 800 are used to vibrate the guide sheet 300 in the process that the overlapping area of ​​the projection of the guide sheet 300 and the kneading barrel 400 on the horizontal plane increases from a preset value to a maximum value and decreases from the maximum value to a preset value. During the kneading process, the tea juice in the tea leaves will be squeezed out and attached to the surface of the tea leaves, and some tea leaves will adhere to the guide sheet 300. However, the present invention provides the vibration components 800, so that the guide sheet 300 during the kneading process can shake off the tea leaves adhered to the guide sheet 300, so that the tea leaves no longer adhere to the guide sheet 300, and then the tea leaves move along the upper surface of the inclined guide sheet 300 toward the axis direction of the kneading disk 200, further optimizing the kneading effect.

[0053] In a further embodiment, Figure 4 , Figure 5 , Figure 6 , Figure 8As shown, the support member is a support spring 240, and a plurality of mounting grooves 202 are provided on the upper surface of the kneading disk 200, and the number of the mounting grooves 202 is consistent with the number of the guide plates 300; a support spring 240 is fixedly connected to the bottom of each guide plate 300, and the lower end of the support spring 240 is fixedly connected to the mounting groove 202; a side block 320 is fixedly connected to the outer end of the guide plate 300, and when the overlapping area (hereinafter referred to as the overlapping area) of the projection of the guide plate 300 and the kneading barrel 400 on the horizontal plane is greater than a preset value, the outer end face of the side block 320 is in a vertical state, and the outer end face of the side block 320 abuts against the inner circumferential wall of the retaining ring 210; a plurality of accommodating grooves 211 are provided on the inner circumferential wall of the retaining ring 210, and the accommodating grooves 211 extend along the radial direction of the kneading disk 200. 1 is arranged one by one with the guide piece 300; the vibration assembly 800 includes a ball 810, a vibration spring 820 and a groove 830, the ball 810 can be installed in the receiving groove 211 to move radially along the kneading disk 200, and the inner end of the ball 810 is a hemispherical surface; the vibration spring 820 is horizontally arranged in the receiving groove 211, and the two ends of the vibration spring 820 are respectively connected to the ball 810 and the receiving groove 211, and the vibration spring 820 has a tendency to move the ball 810 toward the axis of the kneading disk 200; the outer end surface of the side block 320 is provided with a plurality of grooves 830, and when the outer end surface of the side block 320 abuts against the inner peripheral wall of the retaining ring 210, the plurality of grooves 830 are spaced apart in the vertical direction; in the process of the vertical movement of the side block 320, the ball 810 can be inserted into the plurality of grooves 830 in sequence.

[0054] During the rotational movement of the kneading barrel 400, the overlapping area between the kneading barrel 400 and each guide piece 300 first increases and then decreases. When the overlapping area between the guide piece 300 and the kneading barrel 400 is greater than the preset value, the guide piece 300 begins to elastically deform, the support spring 240 is compressed and stores force, and the side block 320 rotates around the connection position between the side block 320 and the guide piece 300. The outer end face of the side block 320 is in a vertical state and abuts against the inner circumferential wall of the retaining ring 210. Figure 5 As shown; thereafter, as the overlapping area of ​​the guide sheet 300 and the kneading barrel 400 continues to increase, the edge block 320 moves vertically downward;

[0055] When the overlapping area reaches the maximum, the pressure exerted by the kneading barrel 400 on the guide sheet 300 is the maximum, the elastic deformation of the guide sheet 300 reaches the maximum, and the lower surface of the guide sheet 300 abuts against the kneading barrel 400. As the kneading barrel 400 continues to rotate, the overlapping area gradually decreases, the pressure exerted by the kneading barrel 400 on the guide sheet 300 gradually decreases, and the guide sheet 300 returns to a natural state driven by the support spring 240.

[0056] During the vertical movement of the edge block 320, the edge block 320 pushes the pin 810 radially outward along the kneading barrel 400, and the pin 810 moves outward along its own axial direction. The vibration spring 820 is compressed and accumulates force. As the elastic deformation of the guide plate 300 decreases, when the groove 830 is facing the pin 810, the vibration spring 820 releases part of the elastic force, pushing the pin 810 to insert into the groove 830. When the edge block 320 continues to move upward, the pin 810 gradually disengages from the groove 830. During the entire process of vertical movement of the edge block 320, the inner end of the ball 810 alternately abuts against the outer end surface of the edge block 320 and the groove 830, and the support spring 240 tends to restore the guide sheet 300 to its natural state. As a result, under the action of the support spring 240, the ball 810, the vibration spring 820, the groove 830 and the outer end surface of the edge block 320, the guide sheet 300 vibrates, causing the tea leaves adhering to the guide sheet 300 to fall off, further optimizing the kneading effect.

[0057] In a further embodiment, Figure 4 , Figure 5 , Figure 6 As shown, the upper surface of the edge block 320 includes a first slope 321 and a second slope 322. When the guide piece 300 is in a natural state, the first slope 321 is higher inside and lower outside, and the second slope 322 is lower inside and higher outside. The second slope 322 smoothly transitions with the upper surface of the guide piece 300. An abutment ring 250 is fixedly connected to the inner wall of the retaining ring 210, and the lower surface of the abutment ring 250 is a third slope 251, which is higher inside and lower outside. In the natural state, the first slope 321 and the third slope 251 have the same inclination.

[0058] During the rotational movement of the kneading barrel 400, the overlapping area between the kneading barrel 400 and each guide sheet 300 first increases and then decreases. When the overlapping area between the guide sheet 300 and the kneading barrel 400 increases to a preset value, the kneading barrel 400 contacts the second inclined surface 322, and the side block 320 rotates counterclockwise around the connection position between the side block 320 and the guide sheet 300. The third inclined surface 251 is disengaged from the first inclined surface 321, and the guide sheet 300 and the side block 320 are moved away from the first inclined surface 321. Figure 4 Instantly switch to Figure 5 , the outer end surface of the edge block 320 is in a vertical state and abuts against the inner circumferential wall of the retaining ring 210; as the kneading barrel 400 continues to rotate, the edge block 320 moves vertically downward, the kneading barrel 400 is out of contact with the second inclined surface 322, and the kneading barrel 400 is in contact with the first inclined surface 321; when the overlapping area of ​​the guide sheet 300 and the kneading barrel 400 reaches the maximum, refer to Figure 6, the lower surface of the guide piece 300 abuts against the kneading disk 200. As the kneading barrel 400 continues to rotate, the overlapping area between the guide piece 300 and the kneading barrel 400 gradually decreases. During the vertical movement of the side block 320, under the action of the support spring 240, the pin 810, the vibration spring 820, the groove 830 and the outer end surface of the side block 320, the guide piece 300 vibrates, causing the tea leaves adhering to the guide piece 300 to fall off.

[0059] When the overlapping area between the guide piece 300 and the kneading barrel 400 is reduced to a preset value, Figure 5 As shown, the guide piece 300 instantly returns to the initial state under the action of the support spring 240, the edge block 320 instantly rotates clockwise, the first inclined surface 321 abuts against the third inclined surface 251, and instantly switches to Figure 4 In the state shown, the action of the guide piece 300 causes the tea leaves that have been shaken off the guide piece 300 to gather toward the axis direction of the kneading disk 200, further optimizing the kneading effect.

[0060] In a further embodiment, referring to Figure 4 , Figure 5 , Figure 6 , an air duct 720 is provided in the middle of the side block 320, the air duct 720 is perpendicular to the outer end surface of the side block 320 and penetrates the side block 320, and the width of the air duct 720 in the thickness direction of the side block 320 is less than 1 / 10 of the thickness of the side block 320. During the kneading process, when the overlapping area of ​​the guide sheet 300 and the kneading barrel 400 is less than the preset value, such as Figure 4 As shown, the two ends of the air duct 720 are connected to the upper and lower sides of the guide plate 300, thereby guiding the hot air below the guide plate 300 to the top of the guide plate 300, thereby blowing the tea leaves from the outside of the guide plate 300 to the inside, while ensuring the kneading temperature, the tea leaves are moved toward the axial direction of the kneading disk 200.

[0061] In a further embodiment, Figure 2 As shown, the baffle 230 is circular and coaxial with the kneading disk 200 ; a plurality of arc-shaped second ribs 231 are evenly distributed along the axial direction on the upper surface of the baffle 230 ; the bending direction of the second ribs 231 is opposite to that of the first ribs 220 .

[0062] During the rolling process, the rolling barrel 400 performs eccentric rotational motion, the first rib 220 guides the tea leaves in contact with it inward, and the second rib 231 guides the tea leaves outward, thereby moving the tea leaves closer to the axis of the rolling barrel 400, so that the tea leaves can be fully rolled.

[0063] A processing technology for enhancing the aroma and preserving the freshness of green tea comprises the following steps:

[0064] S1: using the above-mentioned green tea aroma enhancement and freshness preservation processing equipment, hot rolling the tea leaves under the condition of 70-80°C hot air;

[0065] S2: Drying in a single-layer mesh belt dryer at 85-90°C for 20 minutes;

[0066] S3: Leave for 5-6 hours;

[0067] S4: Dry with hot air at 87°C.

[0068] After drying, the moisture content of the tea leaves can reach 3%. Compared with the tea leaves with a moisture content of 5%-7% obtained by the tea making process in the prior art, the tea leaves obtained by the processing technology proposed in the present invention are drier.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A processing device for enhancing the flavor and preserving the freshness of green tea, characterized in that: It includes a support frame, a kneading plate, a guide plate, a kneading barrel, a rotary assembly, a pressure cover and an air blowing system; The kneading disk is fixedly connected to the support frame, a baffle ring is fixedly connected to the peripheral wall of the kneading disk, and a plurality of arc-shaped first ribs are evenly distributed on the upper surface of the kneading disk along the circumferential direction; the direction close to the axis of the kneading disk is designated as the inner side, and the direction away from the axis of the kneading disk is designated as the outer side; a discharge port is opened in the middle of the kneading disk, and a baffle is detachably installed at the discharge port; a connecting ring is coaxially installed above the kneading disk, the connecting ring is horizontally arranged, and the inner wall of the connecting ring is flush with the discharge port; There are multiple guide plates, and the number of guide plates is consistent with the number of first ribs; the guide plate is installed between two adjacent first ribs, and there is a gap between two adjacent guide plates, and the gap is opposite to the first rib; the inner side of the guide plate is fixedly connected to the connecting ring, and the guide plate is inclined, and its inner end is lower than the outer end; the guide plate can undergo elastic deformation so that when the kneading barrel contacts the guide plate, the guide plate moves downward as a whole, and since the guide plate is in an inclined state, the distance that the outer end of the guide plate moves downward is greater than the distance that the inner end moves downward, and the first rib extends out of the gap between two adjacent guide plates; the kneading disk is installed with multiple support members, and the support members are used to make the guide plates have a tendency to maintain an initial state; the support members are support springs, and a support spring is fixedly connected to the bottom of each guide plate, and the lower end of the support spring is fixedly connected to the kneading disk; the width of the upper end of the first rib is greater than the width of the lower end, and the gap between two adjacent guide plates has the same width from top to bottom; A kneading barrel is eccentrically arranged above the guide piece and is used to accommodate tea leaves to be kneaded. The kneading barrel is connected to a rotating assembly, which is used to drive the kneading barrel to perform eccentric rotary motion, and the rotating direction of the kneading barrel makes the tea leaves in the kneading barrel contact the concave surface of the first rib; an edge block is fixedly connected to the outer end of the guide piece, and when the overlapping area of ​​the projection of the guide piece and the kneading barrel on the horizontal plane is greater than a preset value, the outer end face of the edge block is in a vertical state, and the outer end face of the edge block abuts against the inner circumferential wall of the retaining ring; a plurality of accommodating grooves are provided on the inner circumferential wall of the retaining ring, and the accommodating grooves extend along the radial direction of the kneading disk, and the accommodating grooves are arranged one by one corresponding to the guide pieces; A plurality of vibration components are provided, and the vibration components are arranged on the kneading disk. The vibration components are used to make the guide plate vibrate in the process that the overlapping area of ​​the projection of the guide plate and the kneading barrel on the horizontal plane increases from a preset value to a maximum value and decreases from the maximum value to a preset value; the vibration component includes a ball, a vibration spring and a groove, the ball can be installed in the receiving groove to be movable along the radial direction of the kneading disk, and the inner end of the ball is a hemispherical surface; the vibration spring is horizontally arranged in the receiving groove, and the two ends of the vibration spring are respectively connected to the ball and the receiving groove, and the vibration spring has a tendency to make the ball move toward the axis of the kneading disk; the groove is opened on the outer end surface of the edge block, and the ball can be inserted into the groove during the vertical movement of the edge block; The gland is connected to the support frame so as to be movable up and down, and the gland is connected to a vertical driving assembly for driving the gland to move up and down; The air blowing system comprises an air blower and a plurality of vents, wherein the air blower is installed below the kneading disk, the plurality of vents are distributed circumferentially on the kneading disk, and the air blower is connected with the vents.

2. The green tea aroma enhancement and freshness preservation processing equipment according to claim 1, characterized in that: The air blowing system also includes an air duct, and the air duct is connected between the air blower and the vent.

3. The green tea aroma enhancement and freshness preservation processing equipment according to claim 2, characterized in that: The outer end face of each edge block is provided with a plurality of grooves. When the outer end face of the edge block abuts against the inner circumferential wall of the retaining ring, the plurality of grooves are spaced apart in the vertical direction. During the vertical movement of the edge block, the pins can be inserted into the plurality of grooves in sequence.

4. The green tea aroma enhancement and freshness preservation processing equipment according to claim 1, characterized in that: The upper surface of the edge block includes a first inclined surface and a second inclined surface. When the guide piece is in a natural state, the first inclined surface is higher inside and lower outside, and the second inclined surface is lower inside and higher outside. The second inclined surface and the upper surface of the guide piece have a smooth transition. An abutment ring is fixedly connected to the inner wall of the retaining ring, and the lower surface of the abutment ring is a third inclined surface, which is higher inside and lower outside. In the natural state, the first inclined surface and the third inclined surface have the same inclination.

5. The green tea aroma enhancement and freshness preservation processing equipment according to claim 1, characterized in that: An air duct is provided in the middle of the edge block, the air duct is perpendicular to the outer end surface of the edge block and runs through the edge block, and the width of the air duct in the thickness direction of the edge block is less than 1 / 10 of the thickness of the edge block.

6. The green tea aroma enhancement and freshness preservation processing equipment according to claim 2, characterized in that: The baffle is circular and coaxial with the kneading disk; a plurality of arc-shaped second ribs are evenly distributed along the axial direction on the upper surface of the baffle; and the bending direction of the second ribs is opposite to that of the first ribs.

7. A processing technology for enhancing the flavor and preserving the freshness of green tea, characterized in that: The following steps are involved: S1: using the green tea aroma enhancement and freshness preservation processing equipment according to any one of claims 1 to 6, hot rolling is performed under hot air conditions of 70-80° C.; S2: Drying in a single-layer mesh belt dryer at 85-90°C for 20 minutes; S3: Leave for 5-6 hours; S4: Dry with hot air at 87°C.

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