Flower-fragrance black tea fermentation equipment and process capable of realizing uniform fermentation

Abstract

The invention relates to the technical field of tea fermentation, in particular to flower-fragrance black tea fermentation equipment capable of achieving uniform fermentation and a process thereof.The fermentation equipment comprises a fermentation cylinder and a fermentation mechanism, and the fermentation cylinder is sequentially provided with an air inlet and an air outlet from bottom to top; the fermentation mechanism is inserted into the fermentation cylinder and located between the air inlet and the air outlet, the fermentation mechanism comprises a tray, a plurality of first air holes are formed in the tray, a base cylinder is coaxially arranged at the top of the tray, the top end of the base cylinder is fixedly arranged on the fermentation cylinder, the base cylinder is fixedly sleeved with a guide conical ring, and the small end of the guide conical ring is arranged upwards; and a plurality of second air holes are formed in the conical surface of the guide conical ring. In the fermentation process, gas is inflated into the fermentation cylinder through the gas inlet, and black tea is driven by the gas to firstly move to the bottom of the guide conical ring, then moves upwards while moving inwards in the radial direction under the guide of the guide conical ring and then penetrates through the base cylinder to fall onto the tray under the action of gravity, so that breakage caused by a mechanical stirring mode is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of tea fermentation, and in particular to a device and a process for fermenting floral black tea capable of evenly fermenting. Background Art

[0002] Black tea is a fully fermented tea. It is made from suitable new leaves of tea trees and is refined through a series of processes including withering, rolling (cutting), fermentation, and drying.

[0003] The fermentation of black tea is a key step in the formation of its unique aroma. According to the degree of fermentation, black tea can be divided into floral black tea, mature fruit black tea and honey black tea. Among them, floral black tea is a special variety of black tea, whose main feature is the obvious floral fragrance.

[0004] In the process of fermenting black tea into floral black tea, a fermentation device is needed. In the related technology, for example, Chinese patent CN117958330A discloses a black tea fermentation processing device. When the black tea fermentation processing device is in use, an air pump is used to provide sufficient air in the storage barrel, and a stirring rack is used to rotate to disperse the air and mix the black tea, thereby achieving uniform oxygen supply and making the air and the black tea in full and uniform contact, thereby promoting the tea polyphenol enzyme in the black tea to fully undergo an oxidation reaction.

[0005] Although the above-mentioned black tea fermentation processing device can improve the fermentation effect of black tea to a certain extent, it is found in the actual fermentation process that the stirring rack easily breaks the black tea when stirring the black tea, resulting in more broken leaves, thereby affecting the release of tea juice and the formation of aroma. Summary of the invention

[0006] Based on this, it is necessary to provide a floral black tea fermentation equipment and process that can be evenly fermented to address the problem of poor quality of finished products in the current black tea fermentation process.

[0007] The above purpose is achieved through the following technical solutions:

[0008] A floral black tea fermentation device capable of uniform fermentation, comprising:

[0009] A vertical fermentation cylinder, wherein an air inlet and an air outlet are sequentially arranged on the fermentation cylinder from bottom to top;

[0010] A fermentation mechanism is inserted inside the fermentation cylinder and is located between the air inlet and the air outlet. The fermentation mechanism includes a tray, a plurality of first air holes are opened on the tray, and the tray is used to place tea leaves. A base cylinder is coaxially arranged on the top of the tray, and the top end of the base cylinder is fixedly arranged on the fermentation cylinder. A guide cone ring is fixedly sleeved on the base cylinder, and the small end of the guide cone ring is arranged upward, and a plurality of second air holes are opened on the cone surface of the guide cone ring;

[0011] During the fermentation process, gas is filled into the fermentation cylinder through the air inlet. After the gas passes through the first air holes, it first drives the tea leaves to move from bottom to top, and then passes through the second air holes and is discharged from the air outlet. Driven by the gas, the tea leaves first move to the bottom of the guide cone ring, and then move radially inward and upward under the guidance of the guide cone ring, and then pass through the base cylinder and fall back onto the tray under the action of gravity.

[0012] Furthermore, an even number of placement areas are independently provided on the tray, and the placement areas are all used to place the tea leaves; the tray is provided with discharge ports whose number is equal to the placement areas, and the discharge ports and the placement areas are arranged correspondingly; the floral black tea fermentation equipment that can be evenly fermented also includes a screening cylinder, which is arranged between the tray and the base cylinder, and an inner cylinder is coaxially and fixedly provided inside the screening cylinder, and a number of first collecting channels equal to the placement areas is formed between the screening cylinder and the inner cylinder, and they are grouped in pairs, and different groups of the first collecting channels are evenly arranged along the circumferential direction; a number of second collecting channels equal to the placement areas is formed inside the inner cylinder, and they are grouped in pairs , different groups of the second collecting channels are evenly arranged along the circumferential direction, and the second collecting channels and the first collecting channels are staggered along the circumferential direction in groups; a guide cone and a screening cone ring are fixedly arranged inside the base cylinder, the small end of the guide cone is arranged upward, and is configured to guide the tea leaves to the screening cone ring; the large end of the screening cone ring is arranged upward, and a plurality of third air holes are arranged on the conical surface of the screening cone ring, and the screening cone ring is configured to guide the tea leaves with a size less than or equal to a preset value into the first collecting channel after screening and guide them out from the discharge port, and guide the tea leaves with a size greater than the preset value into the second collecting channel after screening and guide them out from the discharge port.

[0013] Furthermore, the floral black tea fermentation equipment that can be evenly fermented also includes ventilation tubes whose number is equal to the placement area, and are divided into two groups. The two groups of ventilation tubes are staggered along the circumferential direction and inserted one by one in the placement area. One group of ventilation tubes is located above the tea leaves and is configured to blow air from top to bottom, and the other group of ventilation tubes is located below the tea leaves and is configured to blow air from bottom to top.

[0014] Furthermore, the discharge port includes a first discharge port and a second discharge port of equal number and placement area, the second discharge port is located above the first discharge port, the first discharge port and the second discharge port are evenly arranged along the circumference and staggered along the circumference, adjacent first discharge ports and second discharge ports are a group and correspond to the same placement area; the tray can slide in the vertical direction; the screening drum can rotate on its own.

[0015] Furthermore, the floral black tea fermentation equipment capable of uniform fermentation further comprises a first driving member, wherein the first driving member is configured to provide a driving force for the tray to slide in a vertical direction.

[0016] Furthermore, the floral black tea fermentation equipment that can be evenly fermented also includes an elastic member, one end of which is arranged on the first driving member, and the other end is arranged on the tray. Under the joint action of the elastic member and the first driving member, the tray can vibrate to flatten the tea leaves thereon.

[0017] Furthermore, the floral black tea fermentation equipment capable of uniform fermentation also includes a second driving member, and the second driving member is configured to provide a driving force for the self-rotation of the screening drum.

[0018] Furthermore, the floral black tea fermentation equipment capable of uniform fermentation also includes a spiral guide plate, which is fixedly sleeved on the base cylinder and located below the guide cone ring, and a plurality of fourth air holes are opened on the spiral plate surface of the spiral guide plate.

[0019] Furthermore, there are multiple fermentation mechanisms, which are arranged at intervals along the axial direction of the fermentation cylinder.

[0020] The present invention also provides a uniformly fermented floral black tea fermentation process, which uses a uniformly fermented floral black tea fermentation device. The uniformly fermented floral black tea fermentation process comprises the following steps:

[0021] S1. Place tea leaves on a tray;

[0022] S2. Fill the fermentation cylinder with gas through the air inlet.

[0023] The beneficial effects of the present invention are:

[0024] The invention relates to a flower-scented black tea fermentation device and process capable of evenly fermenting. During the fermentation process, gas is filled into a fermentation cylinder through an air inlet. After the gas passes through a first air hole, the gas first drives the black tea to move from bottom to top, and then passes through a second air hole and is discharged from an air outlet. Driven by the gas, the black tea first moves to the bottom of a guide cone ring, and then moves radially inward and upward under the guidance of the guide cone ring, and then passes through a base cylinder and falls back onto a tray under the action of gravity, thereby forming a cycle. This avoids the breakage of the black tea caused by a mechanical stirring method, which is beneficial to improving the integrity of the black tea, and ensures sufficient and even contact between the air and the black tea, which is beneficial to enhancing the fermentation effect of the black tea and improving the product quality of the flower-scented black tea after fermentation.

[0025] Furthermore, by setting up two groups of ventilation pipes distributed up and down, and setting the upper ventilation pipe to blow air downward and the lower ventilation pipe to blow air upward, the air inside the fermentation cylinder can form an up and down circulation flow, which helps to improve the uniformity of air distribution inside the fermentation cylinder and improve the uniformity of black tea fermentation.

[0026] Furthermore, by arranging the tray to slide in the vertical direction and the screening drum to rotate, when in use, the smaller tea leaves in the upper placement area where the ventilation pipe is located can be located above the larger tea leaves, and the smaller tea leaves in the lower placement area where the ventilation pipe is located can be located below the larger tea leaves. When the ventilation pipe blows air, the air can first pass through the tea leaves with smaller gaps and then pass through the tea leaves with larger gaps. On the one hand, the gas can effectively penetrate the tea leaves, and on the other hand, it is beneficial to improve the fluidity of air between the tea leaves, thereby improving the overall fermentation uniformity of the tea leaves. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the three-dimensional structure of a floral black tea fermentation device capable of uniform fermentation provided by an embodiment of the present invention;

[0028] Figure 2 A schematic diagram of the exploded parts of a floral black tea fermentation device capable of uniform fermentation provided by an embodiment of the present invention;

[0029] Figure 3 A front view structural schematic diagram of a floral black tea fermentation device capable of uniform fermentation without the second installation portion provided by an embodiment of the present invention;

[0030] Figure 4 A schematic diagram of the front view of the fermentation mechanism of a floral black tea fermentation device capable of uniform fermentation provided by one embodiment of the present invention;

[0031] Figure 5 for Figure 4 Middle AA section view;

[0032] Figure 6 A schematic diagram of the three-dimensional structure of a fermentation mechanism of a floral black tea fermentation device capable of uniform fermentation provided by an embodiment of the present invention;

[0033] Figure 7 A schematic diagram of the exploded parts of a fermentation mechanism of a floral black tea fermentation device capable of uniform fermentation provided by an embodiment of the present invention;

[0034] Figure 8 A schematic diagram of the front view of the screening cylinder of a floral black tea fermentation device capable of uniform fermentation provided by one embodiment of the present invention;

[0035] Fig. 9 for Figure 8Middle BB section view;

[0036] Fig.10 for Figure 8 Middle CC section view;

[0037] Fig.11 A front view structural schematic diagram of a tray of a floral black tea fermentation device capable of uniform fermentation provided by an embodiment of the present invention;

[0038] Fig.12 for Fig.11 Center DD section view.

[0039] in:

[0040] 1. fermentation cylinder; 11. first mounting part; 111. air inlet pipe; 112. air outlet pipe; 113. mounting plate; 114. chassis; 115. drive cylinder; 116. mounting ring; 117. compression spring; 12. second mounting part; 13. top cover;

[0041] 2. Fermentation mechanism; 21. Tray; 2101. Placement area; 2102. First discharge port; 2103. Second discharge port; 2104. Mounting groove; 2105. Ventilation hole; 211. Partition plate; 212. Ventilation pipe; 22. Base cylinder; 2201. Feed inlet; 221. Guide cone ring; 222. Spiral guide plate; 223. Guide cone; 224. Screening cone ring; 23. Screening cylinder; 2301. First collecting channel; 2302. Second collecting channel; 231. Inner cylinder; 24. Ventilation pipe; 25. Driving motor. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0043] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned herein, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0044] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0045] like Figures 1 to 12 As shown, the floral black tea fermentation equipment that can be evenly fermented provided by one embodiment of the present invention is used to assist the fermentation of black tea, and is configured to include a vertical fermentation cylinder 1 and a fermentation mechanism 2. The fermentation cylinder 1 is provided with an air inlet and an air outlet from bottom to top; the fermentation mechanism 2 is inserted into the fermentation cylinder 1 and is located between the air inlet and the air outlet. The fermentation mechanism 2 is configured to include a tray 21, and a plurality of first air holes are opened on the tray 21. The tray 21 is used to place tea leaves. A base cylinder 22 is coaxially arranged on the top of the tray 21. The top end of the base cylinder 22 is fixedly arranged on the fermentation cylinder 1. A guide cone ring 221 is fixedly sleeved on the base cylinder 22. The small end of the guide cone ring 221 is arranged upward, and a plurality of second air holes are opened on the cone surface of the guide cone ring 221.

[0046] Specifically in this embodiment, Figure 1 and Figure 2 As shown, the fermentation cylinder 1 is provided with a first mounting portion 11, a second mounting portion 12 and a top cover 13. The first mounting portion 11 and the second mounting portion 12 are both provided with an "Ω"-shaped plate-like structure, and can be spliced ​​into a complete cylindrical shape and can be detachably connected together by bolts; a bottom plate 114 is coaxially and fixedly provided at the bottom of the first mounting portion 11, and the bottom plate 114 is used to close the bottom of the fermentation cylinder 1; internal threads are provided on the inner circumferential walls of the tops of the first mounting portion 11 and the second mounting portion 12, and external threads are provided on the circumferential side walls of the top cover 13. The top cover 13 is provided with a threaded connection to the first mounting portion 11 during installation. The top of the first mounting part 11 and the second mounting part 12 are used to close the top of the fermentation cylinder 1; an air inlet pipe 111 and an air outlet pipe 112 are vertically arranged on the outer peripheral wall of the first mounting part 11, and the air inlet pipe 111 is located directly below the air outlet pipe 112, and the two are arranged at intervals, the air inlet pipe 111 and the air outlet pipe 112 are both connected to the fermentation cylinder 1, the air inlet is arranged at the air inlet pipe 111, and the air outlet is arranged at the air outlet pipe 112; in order to facilitate the filling of gas into the fermentation cylinder 1 through the air inlet, the floral black tea fermentation equipment that can be evenly fermented is arranged to also include a first air pump, and the exhaust end of the first air pump is connected to the air inlet pipe 111.

[0047] More specifically, Figure 5 and Figure 7 As shown, the tray 21 is configured as a "mountain" shaped rotating structure, such as Figure 3 As shown, the tray 21 is installed to be coaxially inserted into the fermentation cylinder 1, the annular groove of the tray 21 is used to place tea leaves, and the first air hole is opened at the bottom of the tray 21; the base cylinder 22 is set to a "T"-shaped structure, and three feed ports 2201 are arranged evenly along the circumferential direction on the circumferential side wall of the base cylinder 22 near the top, and the feed ports 2201 are used to receive tea leaves; in order to facilitate the installation of the base cylinder 22, as shown Figure 3 As shown, a mounting plate 113 is coaxially and fixedly inserted inside the fermentation cylinder 1, and the base cylinder 22 is arranged to be coaxial at the top and fixed at the bottom of the mounting plate 113 during installation; the guide cone ring 221 is arranged to be an annular cone structure, and is arranged to be coaxially and fixedly sleeved on the base cylinder 22 during installation.

[0048] During the fermentation process, the first air pump is started, and the first air pump fills gas into the fermentation cylinder 1 through the air inlet. After the gas passes through the first air hole, it first drives the tea leaves to move from bottom to top, and then passes through the second air hole and is discharged from the air outlet; driven by the gas, the tea leaves first move to the bottom of the guide cone ring 221, and then move radially inward and upward under the guidance of the guide cone ring 221, and then enter the base cylinder 22 through the feed port 2201 under the action of gravity, and then pass through the base cylinder 22 and fall back onto the tray 21, thus forming a cycle, thereby avoiding the breakage of the black tea caused by mechanical stirring, which is beneficial to improving the integrity of the black tea, and on the other hand, ensuring sufficient and uniform contact between the air and the black tea, which is beneficial to enhancing the fermentation effect of the black tea while improving the product quality of the fermented floral black tea.

[0049] In some embodiments, an even number of placement areas 2101 are independently provided on the tray 21, and the placement areas 2101 are all used to place tea leaves; the tray 21 is provided with discharge ports equal in number to the placement areas 2101, and the discharge ports and the placement areas 2101 are correspondingly provided; the floral black tea fermentation equipment capable of even fermentation is provided to further include a screening cylinder 23, the screening cylinder 23 is provided between the tray 21 and the base cylinder 22, an inner cylinder 231 is coaxially and fixedly provided inside the screening cylinder 23, and first collecting channels 2301 equal in number to the placement areas 2101 are formed between the screening cylinder 23 and the inner cylinder 231, and the first collecting channels 2301 of different groups are evenly arranged along the circumferential direction in pairs; second collecting channels 2301 equal in number to the placement areas 2101 are formed inside the inner cylinder 231 The second collecting channels 2302 are arranged in groups of two, and different groups of second collecting channels 2302 are evenly arranged along the circumferential direction, and the second collecting channels 2302 and the first collecting channels 2301 are staggered along the circumferential direction in groups; a guide cone 223 and a screening cone ring 224 are fixedly arranged inside the base cylinder 22, the small end of the guide cone 223 is arranged upward, and is configured to guide the tea leaves to the screening cone ring 224; the large end of the screening cone ring 224 is arranged upward, and a plurality of third air holes are arranged on the conical surface of the screening cone ring 224, and the screening cone ring 224 is configured to guide the tea leaves with a size less than or equal to a preset value into the first collecting channel 2301 after screening and guide them out from the discharge port, and guide the tea leaves with a size greater than the preset value into the second collecting channel 2302 after screening and guide them out from the discharge port.

[0050] Specifically in this embodiment, take the number of placement areas 2101 as six as an example. Figure 6 As shown, six partitions 211 are fixed and vertically arranged inside the tray 21. The six partitions 211 are evenly arranged along the circumference, and a fan-shaped placement area 2101 is formed between adjacent partitions 211. A plurality of fifth air holes are arranged on each partition 211. The setting of the fifth air holes can better exchange gas between the placement areas 2101.

[0051] More specifically, Figure 8 As shown, the screening cylinder 23 is set to a "T"-shaped structure with an open top, as shown in FIG. Figure 5 As shown, the screening cylinder 23 is arranged during installation so that the top end is coaxially arranged at the bottom of the base cylinder 22 and the bottom end is coaxially inserted in the middle of the tray 21 .

[0052] More specifically, Figure 5As shown, the inner cylinder 231 is configured as a cylindrical structure with an open top. In order to facilitate the formation of the first collecting channel 2301 and the second collecting channel 2302, a first partition with a cross-section shape of "*" is fixedly inserted between the inner cylinder 231 and the screening cylinder 23, and the first collecting channel 2301 is formed between adjacent first partitions. A second partition with a cross-section shape of "*" is fixedly inserted inside the inner cylinder 231, and the second collecting channel 2302 is formed between adjacent second partitions; the first collecting channel 2301 and the second collecting channel 2302 are both configured as L-shaped hole structures, and the top end of the first collecting channel 2301 is connected to the outside of the inner cylinder 231 and the bottom end points to the placement area 2101, and the top end of the second collecting channel 2302 is connected to the inside of the inner cylinder 231 and the bottom end points to the placement area 2101; as shown Fig. 9 As shown, the cross-sectional shape of the first collecting channel 2301 is a fan-shaped shape, the cross-sectional shape of the second collecting channel 2302 is a fan-shaped shape, and the number of the first collecting channel 2301 and the second collecting channel 2302 are both set to six; initially, two first collecting channels 2301 and one discharge port of the same group are set correspondingly, and two second collecting channels 2302 and one discharge port of the same group are set correspondingly.

[0053] More specifically, Figure 5 As shown, the guide cone 223 is configured as a conical structure, and is configured to be coaxially inserted into the base cylinder 22 during installation, and is located below the feed port 2201. The guide cone 223 and the base cylinder 22 are spaced apart so that the tea leaves can pass through normally; the screening cone ring 224 is configured as an annular conical structure, and is configured to be coaxially inserted into the base cylinder 22 during installation, and is located below the guide cone 223; the preset value is set to be equal to the aperture of the third air hole.

[0054] During the fermentation process, Figure 5As shown, the tea leaves first enter the base cylinder 22 from the feed port 2201, then move radially outward and downward under the guidance of the conical surface of the guide cone 223, then fall from the gap between the guide cone 223 and the base cylinder 22 to the top outermost edge of the screening cone ring 224, and then move radially inward and downward under the guidance of the conical surface of the screening cone ring 224; in the process of the movement of the tea leaves, the tea leaves with a size less than or equal to the preset value pass through the third air hole and fall into the first collecting channel 2301, and the tea leaves with a size greater than the preset value first enter the inner cylinder 231 from the middle of the screening cone ring 224, and then fall into the second collecting channel 2302, and then pass through the discharge port connected to the first collecting channel 2301 and the second collecting channel 2302 to be discharged, and enter the corresponding placement area 2101, so that the tea leaves with a size greater than the preset value and the tea leaves with a size less than or equal to the preset value can be screened out to avoid the larger tea leaves wrapping the smaller tea leaves in it to form agglomerates under the action of their own weight, thereby affecting the normal fermentation of the tea leaves.

[0055] In a further embodiment, the floral black tea fermentation equipment that can ferment evenly is configured to also include ventilation pipes 24 whose number is equal to the placement area 2101, and are evenly divided into two groups. The two groups of ventilation pipes 24 are staggered along the circumferential direction and are inserted one by one into the placement area 2101. One group of ventilation pipes 24 is located above the tea leaves and is configured to blow air from top to bottom, and the other group of ventilation pipes 24 is located below the tea leaves and is configured to blow air from bottom to top.

[0056] Specifically in this embodiment, the number of ventilation pipes 24 is set to six for example, three by three in a group, such as Figure 7 As shown, the ventilation pipe 24 is configured as a hollow symmetrical structure, and has a central rod portion and a plurality of arc-shaped rod portions, the plurality of arc-shaped rod portions are arranged at equal intervals along the extension direction of the central rod portion, and the central rod portion and the arc-shaped rod portion are both provided with sixth air holes; in order to facilitate the installation of the ventilation pipe 24, as shown Fig.12 As shown, three mounting grooves 2104 are provided near the middle of the central peripheral wall of the tray 21, and the three mounting grooves 2104 are evenly arranged along the circumferential direction. Three mounting grooves 2104 are provided below the partition 211 on the central peripheral wall of the tray 21, and the three mounting grooves 2104 are evenly arranged along the circumferential direction. When installing, the ventilation pipe 24 is arranged so that one end of the central rod part is inserted into the mounting groove 2104, and the other end is suspended, the arc rod part is arranged horizontally, and the sixth air hole of the ventilation pipe 24 located at the top is arranged downward, and the sixth air hole of the ventilation pipe 24 located at the bottom is arranged upward; in order to facilitate ventilation to the inside of the ventilation pipe 24, as shown in FIG. Fig.12As shown, six ventilation pipes 212 are evenly arranged along the circumferential direction at the bottom of the tray 21, and six vertical ventilation holes 2105 are opened in the central circumferential side wall of the tray 21. The ventilation holes 2105 and the ventilation pipes 212 are arranged one by one, and one end is connected to the ventilation pipe 212, and the other end is connected to the installation groove 2104. The floral black tea fermentation equipment that can be evenly fermented is configured to also include a second air pump, and the exhaust end of the second air pump is connected to the six ventilation pipes 212 at the same time.

[0057] During the fermentation process, the second air pump is first started. The second air pump passes the gas into the ventilation pipe 24 through the ventilation pipe 212, the ventilation hole 2105, and the installation groove 2104 in sequence, and then discharges it from the sixth air hole. The ventilation pipe 24 located above blows air downward, and the ventilation pipe 24 located below blows air upward, so that the air inside the fermentation cylinder 1 can form an up and down circulation flow, which helps to improve the uniformity of air distribution inside the fermentation cylinder 1 and improve the uniformity of black tea fermentation. After the preset fermentation time, the second air pump is turned off and the first air pump is started.

[0058] In a further embodiment, the discharge port is configured to include a first discharge port 2102 and a second discharge port 2103 which are equal in number and placement area 2101, the second discharge port 2103 is located above the first discharge port 2102, the first discharge port 2102 and the second discharge port 2103 are evenly arranged along the circumference and staggered along the circumference, adjacent first discharge ports 2102 and second discharge ports 2103 are a group and correspond to the same placement area 2101; the tray 21 can slide in the vertical direction; the screening drum 23 can rotate on its own.

[0059] Specifically in this embodiment, Fig.11 As shown, the first discharge port 2102 and the second discharge port 2103 are both opened on the central circumferential side wall of the tray 21 and are arranged close to the top. The number of the first discharge port 2102 and the second discharge port 2103 is six, and each is evenly arranged along the circumference, and at the same time, they are staggered along the circumference. Figure 5 As shown, a ring-shaped protrusion with a "T"-shaped cross section is coaxially arranged on the top of the screening cylinder 23, and a ring-shaped slot with a "T"-shaped cross section is coaxially arranged on the bottom of the base cylinder 22. The protrusion is inserted into the slot during installation so that the screening cylinder 23 can rotate relative to the base cylinder 22; initially, all the first collecting channels 2301 and the second collecting channels 2302 are closed by the middle inner wall of the tray 21.

[0060] During the fermentation process, the screening drum 23 is first driven to rotate. Under the rotation of the screening drum 23 , the tea leaves can be evenly distributed into each first collecting channel 2301 and each second collecting channel 2302 .

[0061] After all the tea leaves fall into the screening drum 23, the rotation of the screening drum 23 is stopped. For ease of description, Fig.10 As shown, the six second collecting channels 2302 are marked as E1, E2, E3, E4, E5, and E6 in clockwise direction, and the six first collecting channels 2301 are marked as F1, F2, F3, F4, F5, and F6 in sequence; then the tray 21 is driven to move upward in the vertical direction, so that E1 is connected with the No. 1 placement area 2101, E3 is connected with the No. 3 placement area 2101, E5 is connected with the No. 5 placement area 2101, F1 is connected with the No. 2 placement area 2101, F3 is connected with the No. 4 placement area 2101, and F5 is connected with the No. 6 placement area 2101, among which the No. 1, No. 3 and No. 5 placement areas 2101 are the placement areas 2101 corresponding to the ventilation pipe 24 located above, so that the tea leaves with larger sizes form the lower layer, and the No. 2, No. 4 and No. 6 placement areas 2101 are the placement areas 2101 corresponding to the ventilation pipe 24 located below, so that the tea leaves with smaller sizes form the lower layer.

[0062] After the tea leaves have fallen, the screening drum 23 is driven to rotate, so that F2 corresponds to the No. 1 placement area 2101, E4 corresponds to the No. 2 placement area 2101, F4 corresponds to the No. 3 placement area 2101, E6 corresponds to the No. 4 placement area 2101, F6 corresponds to the No. 5 placement area 2101, and E2 corresponds to the No. 6 placement area 2101, and then the tray 21 is driven to move upward in the vertical direction, so that F2 is connected to the No. 1 placement area 2101, E4 is connected to the No. 2 placement area 2101, F4 is connected to the No. 3 placement area 2101, E6 is connected to the No. 4 placement area 2101, F6 is connected to the No. 5 placement area 2101, and E2 is connected to the No. 6 placement area 2101, so that the smaller tea leaves are placed in No. 1, No. 3 and No. 5. The placement area 2101 forms an upper layer, and the larger tea leaves form an upper layer in the No. 2, No. 4 and No. 6 placement areas 2101, and then the second air pump is started, so that the air blown out of the ventilation pipe 24 passes through the smaller tea leaves first, and then passes through the larger tea leaves. Since the gaps between the smaller tea leaves are smaller and the kinetic energy of the air just blown out from the ventilation pipe 24 is larger, the air can effectively pass through the smaller tea leaves. Although the kinetic energy of the air will decrease after passing through the smaller tea leaves, since the gaps between the larger tea leaves are larger, the air can still pass through the larger tea leaves. On the one hand, it can effectively penetrate the tea leaves, and on the other hand, it is beneficial to improve the fluidity of air between the tea leaves, thereby improving the overall fermentation uniformity of the tea leaves.

[0063] In other embodiments, the floral black tea fermentation equipment capable of uniform fermentation is configured to further include a first driving member, and the first driving member is configured to provide a driving force for the tray 21 to slide in a vertical direction.

[0064] Specifically in this embodiment, the first driving member is configured to include a driving cylinder 115, such as Figure 2 and Figure 3 As shown, there are multiple driving cylinders 115 , which are evenly distributed on the top of the chassis 114 along the circumferential direction and are fixedly connected to the tray 21 at the same time, so as to drive the tray 21 to move in the vertical direction.

[0065] It is understandable that the driving cylinder 115 can be configured as any one of a hydraulic cylinder, a pneumatic cylinder or an electric cylinder.

[0066] In a further embodiment, the floral black tea fermentation equipment that can be evenly fermented is configured to also include an elastic member, one end of the elastic member is arranged on the first driving member, and the other end is arranged on the tray 21. Under the joint action of the elastic member and the first driving member, the tray 21 can vibrate to flatten the tea leaves thereon.

[0067] Specifically in this embodiment, in order to facilitate the installation of the elastic member, the floral black tea fermentation device that can be evenly fermented is configured to further include a mounting ring 116, which is configured to be coaxially inserted into the fermentation cylinder 1 during installation and is commonly connected to the cylinder seats of all the driving cylinders 115; Figure 2 and 3 As shown, the elastic member can be configured as a compression spring 117, and there are multiple compression springs 117. When installed, the compression springs 117 are arranged on the top of the mounting ring 116 and are evenly arranged along the circumferential direction, wherein some of the compression springs 117 are sleeved on the output shaft of the driving cylinder 115.

[0068] When the tray 21 receives tea leaves, the driving cylinder 115 periodically drives the tray 21 to move upward a certain distance in the vertical direction, and then cancels the power, so that the tray 21 can fall under the action of gravity and realize reciprocating vibration under the elastic action of the compression spring 117, thereby helping to evenly distribute the tea leaves in the placement area 2101 to avoid accumulation in one place and affecting fermentation.

[0069] In other embodiments, the uniformly fermentable floral black tea fermentation equipment is configured to further include a second driving member, and the second driving member is configured to provide a driving force for the self-rotation of the screening drum 23 .

[0070] Specifically in this embodiment, the second driving member is configured to include a driving motor 25, such as Figure 3 and Figure 5 As shown, the driving motor 25 is arranged on the top of the chassis 114 during installation, and the axis of the motor shaft coincides with the axis of the chassis 114 , and the motor shaft is fixedly connected to the bottom of the screening drum 23 to drive the screening drum 23 to rotate.

[0071] In other embodiments, the floral black tea fermentation equipment that can ferment evenly is configured to also include a spiral guide plate 222, which is fixedly sleeved on the base cylinder 22 and located below the guide cone ring 221, and a plurality of fourth air holes are opened on the spiral plate surface of the spiral guide plate 222.

[0072] Specifically in this embodiment, the setting of the spiral guide plate 222 enables the tea leaves to move along the lower spiral surface of the spiral guide plate 222 at the same time as they move vertically from bottom to top, thereby helping to extend the travel path and time of the tea leaves, thereby increasing the time that the tea leaves are fully in contact with the air and improving the fermentation effect.

[0073] In other embodiments, in order to increase the amount of tea leaves fermented in a single time, there are multiple fermentation mechanisms 2 , which are arranged at intervals along the axial direction of the fermentation cylinder 1 .

[0074] Specifically in this embodiment, Figure 2 and Figure 3 As shown, the number of fermentation mechanisms 2 can be set to two, and accordingly, the number of mounting disks 113 is set to two, and one is located at the top of the fermentation cylinder 1, and the other is located in the middle of the fermentation cylinder 1, and the number of air inlet pipes 111 and air outlet pipes 112 are both set to two, one of which is set above the mounting disk 113 located in the middle and is set close to the mounting disk 113, and the other is set below the mounting disk 113 located in the middle and is close to the bottom plate 114, one of which is set below the mounting disk 113 located in the middle and is close to the mounting disk 113, and the other is set above the mounting disk 113 located in the middle and is close to the top cover 13; the first air pump is connected to the two air inlet pipes 111 at the same time.

[0075] In combination with the above embodiments, the use principle and working process of the embodiments of the present invention are as follows:

[0076] Initially, the first mounting portion 11 and the second mounting portion 12 are in a separated state.

[0077] First, the tea leaves are evenly distributed into the placement area 2101, and then the first mounting part 11 and the second mounting part 12 are fixed by bolts, and then the top cover 13 is threadedly connected to the top of the first mounting part 11 and the second mounting part 12 to close the top of the fermentation cylinder 1; then the second air pump is started, and the second air pump passes the gas into the ventilation pipe 24 through the ventilation pipe 212, the ventilation hole 2105, and the mounting groove 2104 in sequence, and then it is discharged from the sixth air hole, and the ventilation pipe 24 located above blows air downward, and the ventilation pipe 24 located below blows air upward, so that the air inside the fermentation cylinder 1 can form an up and down circulation flow; during the fermentation process, due to the rolling and other processes, the tea leaves are formed into rolls of different sizes.

[0078] After the preset fermentation time, the first air pump is started, and the first air pump fills gas into the fermentation cylinder 1 through the air inlet. After the gas passes through the first air hole, it first drives the tea leaves to move from bottom to top, and then passes through the second air hole and is discharged from the air outlet; driven by the gas, the tea leaves first move to the bottom of the guide cone ring 221, and then move radially inward and upward under the guidance of the guide cone ring 221, and then enter the base cylinder 22 through the feed port 2201 under the action of gravity, and then move radially outward and downward under the guidance of the conical surface of the guide cone 223, and then fall from the gap between the guide cone 223 and the base cylinder 22 to the top outermost edge of the screening cone ring 224, and then move radially inward and downward under the guidance of the conical surface of the screening cone ring 224.

[0079] During the movement of the tea leaves, the driving motor 25 is started synchronously, and the driving motor 25 drives the screening drum 23 to rotate so as to average the tea leaves collected in each first collecting channel 2301 and each second collecting channel 2302; the tea leaves with a size less than or equal to the preset value pass through the third air hole and fall into the first collecting channel 2301, and the tea leaves with a size greater than the preset value first enter the inner drum 231 from the middle of the screening cone ring 224, and then fall into the second collecting channel 2302.

[0080] After all the tea leaves fall into the screening drum 23, the rotation of the screening drum 23 is stopped, and then the tray 21 is driven to move upward in the vertical direction by the driving cylinder 115, so that part of the first collecting channel 2301 and part of the second collecting channel 2302 are respectively connected to part of the placement area 2101, so that the placement area 2101 corresponding to the ventilation pipe 24 located above first receives the larger tea leaves, and the placement area 2101 corresponding to the ventilation pipe 24 located below first receives the smaller tea leaves. In the process of the tea leaves falling, the driving cylinder 115 periodically drives the tray 21 to move upward in the vertical direction for a certain distance, and then cancels the power, so that the tray 21 can fall under the action of gravity, and realize reciprocating vibration under the elastic action of the compression spring 117, so as to evenly distribute the tea leaves in the placement area 2101.

[0081] After the tea leaves have fallen, the screening drum 23 is first driven to rotate, and then the tray 21 is driven to move upward in the vertical direction through the driving cylinder 115, so that another part of the first collecting channel 2301 and another part of the second collecting channel 2302 are respectively connected to another part of the placement area 2101, so that the placement area 2101 corresponding to the ventilation pipe 24 located above then receives tea leaves of smaller size, and the placement area 2101 corresponding to the ventilation pipe 24 located below then receives tea leaves of larger size. In the process of the tea leaves falling, the driving cylinder 115 periodically drives the tray 21 to move upward in the vertical direction for a certain distance, and then cancels the power, so that the tray 21 can fall under the action of gravity, and realize reciprocating vibration under the elastic action of the compression spring 117, so as to evenly distribute the tea leaves in the placement area 2101; then the second air pump is started, so that the air blown out of the ventilation pipe 24 first passes through the tea leaves of smaller size and then passes through the tea leaves of larger size.

[0082] Repeat the above process until the tea leaves are fully fermented.

[0083] Another embodiment of the present invention further provides a process for fermenting floral black tea that can be evenly fermented. The process for fermenting floral black tea that can be evenly fermented is configured to include the following steps using the above-mentioned device for fermenting floral black tea that can be evenly fermented:

[0084] S1, placing tea leaves on the tray 21;

[0085] S2. Filling gas into the fermentation cylinder 1 through the air inlet.

[0086] Specifically in this embodiment, initially, the first mounting portion 11 and the second mounting portion 12 are in a separated state; first, the tea leaves are evenly distributed onto the tray 21, and then the first mounting portion 11 and the second mounting portion 12 are fixed by bolts, and then the top cover 13 is threadedly connected to the top of the first mounting portion 11 and the second mounting portion 12 to close the top of the fermentation cylinder 1; then the first air pump is started, and the first air pump fills gas into the interior of the fermentation cylinder 1 through the air inlet. After the gas passes through the first air hole, it first drives the tea leaves to move from bottom to top, and then passes through the second air hole and is discharged from the air outlet; driven by the gas, the tea leaves first move to the bottom of the guide cone ring 221, and then move radially inward and upward under the guidance of the guide cone ring 221, and then enter the interior of the base cylinder 22 through the feed port 2201 under the action of gravity, and then pass through the base cylinder 22 and fall back onto the tray 21, thereby forming a cycle.

[0087] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0088] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A floral black tea fermentation equipment capable of uniform fermentation, characterized in that: include: A vertical fermentation cylinder, wherein an air inlet and an air outlet are sequentially arranged on the fermentation cylinder from bottom to top; A fermentation mechanism is inserted inside the fermentation cylinder and is located between the air inlet and the air outlet. The fermentation mechanism includes a tray, a plurality of first air holes are opened on the tray, and the tray is used to place tea leaves. A base cylinder is coaxially arranged on the top of the tray, and the top end of the base cylinder is fixedly arranged on the fermentation cylinder. A guide cone ring is fixedly sleeved on the base cylinder, and the small end of the guide cone ring is arranged upward, and a plurality of second air holes are opened on the cone surface of the guide cone ring; During the fermentation process, gas is filled into the fermentation cylinder through the air inlet. After the gas passes through the first air holes, it first drives the tea leaves to move from bottom to top, and then passes through the second air holes and is discharged from the air outlet. Driven by the gas, the tea leaves first move to the bottom of the guide cone ring, and then move radially inward and upward under the guidance of the guide cone ring, and then pass through the base cylinder and fall back onto the tray under the action of gravity.

2. The uniformly fermentable floral black tea fermentation equipment according to claim 1, characterized in that: An even number of placement areas are independently arranged on the tray, and the placement areas are all used to place the tea leaves; an even number of discharge ports is opened on the tray, and the discharge ports and the placement areas are arranged correspondingly; the floral black tea fermentation equipment that can be evenly fermented also includes a screening cylinder, which is arranged between the tray and the base cylinder, and an inner cylinder is coaxially and fixedly arranged inside the screening cylinder, and a first collecting channel whose number is equal to the placement area is formed between the screening cylinder and the inner cylinder, and two are grouped together, and different groups of the first collecting channels are evenly arranged along the circumferential direction; a second collecting channel whose number is equal to the placement area is formed inside the inner cylinder, and two are grouped together, and different groups of the first collecting channels are evenly arranged along the circumferential direction. The second collecting channels of the group are evenly arranged along the circumferential direction, and the second collecting channels and the first collecting channels are staggered along the circumferential direction in groups; a guide cone and a screening cone ring are fixedly arranged inside the base cylinder, the small end of the guide cone is arranged upward, and is configured to guide the tea leaves to the screening cone ring; the large end of the screening cone ring is arranged upward, and a plurality of third air holes are arranged on the conical surface of the screening cone ring, and the screening cone ring is configured to guide the tea leaves with a size less than or equal to a preset value into the first collecting channel after screening and guide them out from the discharge port, and guide the tea leaves with a size greater than the preset value into the second collecting channel after screening and guide them out from the discharge port.

3. The uniformly fermentable floral black tea fermentation equipment according to claim 2, characterized in that: The floral black tea fermentation equipment that can be evenly fermented also includes ventilation tubes whose number is equal to the placement area, and the ventilation tubes are divided into two groups. The two groups of ventilation tubes are staggered along the circumferential direction and inserted into the placement area one by one. One group of ventilation tubes is located above the tea leaves and is configured to blow air from top to bottom, and the other group of ventilation tubes is located below the tea leaves and is configured to blow air from bottom to top.

4. The uniformly fermentable floral black tea fermentation equipment according to claim 3, characterized in that: The discharge ports include a first discharge port and a second discharge port of equal number and placement area, the second discharge port is located above the first discharge port, the first discharge port and the second discharge port are evenly arranged along the circumference and staggered along the circumference, adjacent first discharge ports and second discharge ports are a group and correspond to the same placement area; the tray can slide in the vertical direction; the screening drum can rotate on its own.

5. The uniformly fermentable floral black tea fermentation equipment according to claim 4, characterized in that: The uniformly fermentable floral black tea fermentation device further comprises a first driving member, which is configured to provide a driving force for the tray to slide in a vertical direction.

6. The uniformly fermentable floral black tea fermentation equipment according to claim 5, characterized in that: The floral black tea fermentation equipment that can be evenly fermented also includes an elastic member, one end of which is arranged on the first driving member, and the other end is arranged on the tray. Under the joint action of the elastic member and the first driving member, the tray can vibrate to flatten the tea leaves thereon.

7. The uniformly fermentable floral black tea fermentation equipment according to claim 4, characterized in that: The uniformly fermentable floral black tea fermentation equipment further comprises a second driving member, which is configured to provide a driving force for the self-rotation of the screening drum.

8. The uniformly fermentable floral black tea fermentation equipment according to claim 1, characterized in that: The floral black tea fermentation equipment capable of evenly fermenting also includes a spiral guide plate, which is fixedly sleeved on the base cylinder and located below the guide cone ring, and a plurality of fourth air holes are opened on the spiral plate surface of the spiral guide plate.

9. The uniformly fermentable floral black tea fermentation equipment according to claim 1, characterized in that: There are multiple fermentation mechanisms, which are arranged at intervals along the axial direction of the fermentation cylinder.

10. A process for fermenting floral black tea that can be fermented uniformly, characterized in that: The uniformly fermentable floral black tea fermentation equipment according to claim 1 is used, and the uniformly fermentable floral black tea fermentation process comprises the following steps: S1. Place tea leaves on a tray; S2. Fill the fermentation cylinder with gas through the air inlet.

Images