Tea leaf fixation device with uniform hot air distribution

Abstract

The invention discloses a tea leaf fixation device with uniform hot air distribution, and relates to the technical field of tea leaf fixation, the tea leaf fixation device with uniform hot air distribution comprises a fixing frame, the upper surface of the fixing frame is fixedly connected with a feed hopper, one side of the feed hopper is communicated with a fixation cylinder, the device disperses tea leaves adhered together, and the fixation cylinder is communicated with the fixation cylinder. It is ensured that each tea leaf can make full contact with hot air in the enzyme deactivation process, the tea leaves can be heated evenly, aroma components in the tea leaves can be better converted and released, the tea leaves have better aroma, and the situation that due to the fact that the tea leaves adhere together and part of the tea leaves are blocked, sufficient heat treatment cannot be achieved, enzyme deactivation is not uniform, and the tea leaves are damaged is avoided. Therefore, the quality of the tea leaves is improved, the dispersed tea leaves can absorb heat in the hot air more quickly, the utilization efficiency of the hot air is improved, the energy consumption is reduced, the tea leaves subjected to fixation can be kept loose, and subsequent rolling, drying and other processing procedures are facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of tea leaf withering, in particular to a tea leaf withering device with uniform hot air distribution. Background Art

[0002] Tea is a common beverage, usually made from the tender leaves and buds of the tea tree. Tea contains caffeine, tea polyphenols, amino acids, vitamins and other ingredients. It has the effects of refreshing the brain, helping digestion, lowering blood lipids and losing weight, and anti-oxidation. Different types of tea and processing methods will affect the taste, aroma and nutritional content of the tea.

[0003] When preparing tea, it usually goes through the steps of withering, killing green leaves, rolling, fermentation, and drying. Among them, killing green leaves is an important link in the tea-making process. It is mainly achieved by rotating the drum to make the tea leaves evenly heated in the drum to achieve the purpose of killing green leaves. The main purpose of killing green leaves is to destroy and passivate the oxidase activity in the fresh leaves through high temperature, inhibit the enzymatic oxidation of tea polyphenols in the fresh leaves, evaporate part of the moisture in the fresh leaves, soften the tea leaves, and facilitate rolling and forming. At the same time, it can dissipate the green smell in the tea leaves to promote the formation of a good aroma of the tea leaves.

[0004] However, the existing tea-withering device may have the following problems during use:

[0005] Tea leaves contain a high amount of water after being picked, especially those with more tender leaves and buds. Their cell structures are relatively soft and easy to adhere to each other. In addition, during the process of withering the tea leaves, the tea leaves absorb moisture from the air, which will also increase the possibility of adhesion. The adhesion between the tea leaves will lead to uneven heat transfer during the withering process, resulting in some tea leaves being over-withered and some tea leaves being under-withered, affecting the quality and taste of the tea leaves, and further leading to inconsistent color of the final finished tea leaves. Some tea leaves may appear burnt yellow, while others may be lighter in color. At the same time, the aroma components of the tea leaves cannot be fully transformed and released, thus affecting the aroma of the tea leaves.

[0006] In addition, the sticky tea leaves will become uneven during the subsequent rolling, drying and other processing, which increases the difficulty and cost of processing. And because the sticky parts are not easy to dry, they provide a growth environment for microorganisms. Therefore, the sticky tea leaves will be more likely to mold and deteriorate during storage.

[0007] Therefore, the present invention proposes a tea leaf withering device with uniform hot air distribution to make up for and improve the deficiencies of the prior art. Summary of the invention

[0008] 1. Technical issues to be resolved

[0009] In view of the deficiencies in the prior art, the present invention provides a tea withering device with uniform hot air distribution, which solves the problems raised in the above-mentioned background technology.

[0010] (II) Technical solution

[0011] To achieve the above objectives, the present invention is implemented through the following technical solutions: a tea leaf withering device with uniform hot air distribution, comprising a fixed frame, the upper surface of the fixed frame is fixedly connected to a feed hopper, one side of the feed hopper is connected to a withering cylinder, the inner wall of the feed hopper is fixedly connected to an auxiliary rod 1, the side of the auxiliary rod 1 close to the vertical center line of the feed hopper is evenly fixedly connected to a dispersion rod 1, the upper surface of the dispersion rod 1 is evenly fixedly connected to an auxiliary rod 2, the inner wall of the feed hopper and the side away from the auxiliary rod 1 is slidably connected to an auxiliary rod 3, the side of the auxiliary rod 3 close to the vertical center line of the feed hopper is evenly fixedly connected to the dispersion rod 2, and the side of the auxiliary rod 3 away from the dispersion rod 2 is fixedly A connecting column 1 is fixedly connected, and a straight slot is formed through one side of the feed hopper close to the auxiliary rod 3, and the connecting column 1 extends to the outside of the feed hopper through the straight slot. The outer surface of the feed hopper is rotatably connected to a rotating shaft, and a sliding groove is formed on the outer surface of the rotating shaft. The end of the connecting column 1 extending to the outside of the feed hopper is slidably connected to the inside of the sliding groove, and the bottom end of the rotating shaft is fixedly connected to a connecting column 2, and the end of the connecting column 2 away from the rotating shaft is fixedly connected to a gear 1, and the upper surface of the fixed frame is rotatably connected to a driving shaft, and the end of the driving shaft close to the withering tube passes through the feed hopper and the withering tube and extends to the outside of the withering tube, and the outer surface of the driving shaft is fixedly connected to a toothed disc, and the toothed disc is meshing with a gear 1.

[0012] Preferably, the auxiliary rod 2 is arranged in an "X" shape which is not connected in the middle, and a rubber pad is attached to the outer surface of the auxiliary rod 2.

[0013] Preferably, the dispersion rod one and the dispersion rod two are symmetrically cross-arranged, and the height of the dispersion rod two close to the auxiliary rod three is higher than the height of the dispersion rod two away from the auxiliary rod three.

[0014] Preferably, the slide groove is composed of two arc-shaped grooves and two vertical grooves, and the two ends of the two arc-shaped grooves are respectively connected through a vertical groove.

[0015] Preferably, a fixed block is fixedly connected to the inner wall of the feed hopper, and the fixed block is symmetrically arranged with reference to the vertical center line of the feed hopper, and a spring is fixedly connected to the lower surface of the fixed block, and the end of the spring away from the fixed block is fixedly connected to a filter plate, and the filter plate is inclined, and the height of the filter plate away from the withering cylinder is higher than the height of the filter plate close to the withering cylinder, and the filter plate extends to the inside of the withering cylinder through the connection between the feed hopper and the withering cylinder, and a pressing rod is fixedly connected to the upper surface of the filter plate, and the top end of the pressing rod passes through the fixed block and extends to above the fixed block, and the pressing rod and the auxiliary rod are located on the same vertical section.

[0016] Preferably, the interior of the driving shaft is set as a cavity, the outer surface of the driving shaft located inside the killing tube is evenly connected with a shunt pipe, and the outer surface of the shunt pipe is evenly opened with through holes.

[0017] Preferably, the outer surface of the driving shaft located inside the withering cylinder is slidably connected with an auxiliary ring, the outer surface of the auxiliary ring is rotatably connected with a connecting rod 1, the end of the connecting rod 1 away from the auxiliary ring is rotatably connected with a cleaning rod, the cleaning rod is slidably connected to the inner wall of the withering cylinder, the auxiliary ring is fixedly connected with a connecting rod 2 on the side close to the feed hopper, the auxiliary ring, connecting rod 1 and connecting rod 2 are distributed in a circular array with the center point of the driving shaft as a reference, a threaded groove is provided on the outer surface of the driving shaft located inside the feed hopper, a nut is threadedly connected to the threaded groove on the outer surface of the driving shaft, and the end of the connecting rod 2 away from the auxiliary ring is rotatably connected to the nut.

[0018] Preferably, the outer surface of the driving shaft extending to the outside of the killing tube is fixedly connected to gear two, the upper surface of the fixed frame is rotatably connected to gear three, gear two and gear three are meshed, and the side of the killing tube close to gear two is fixedly connected to meshing teeth, and the meshing teeth are meshed with gear three.

[0019] Preferably, a spiral blade is fixedly connected to the inner wall of the withering cylinder.

[0020] (III) Beneficial effects

[0021] The tea-tea-withering device with uniform hot air distribution provided by the present invention has the following beneficial effects:

[0022] 1. Through the dispersion rods 2 evenly arranged on the side of the auxiliary rod 3 close to the vertical center line of the feed hopper, when in use, the rotating shaft drives the slide to rotate, and when the slide rotates, the connection column 1 sliding inside the slide drives the dispersion rods 2 fixedly connected to the auxiliary rod 3 to move up and down. Since the dispersion rods 1 and 2 are symmetrically cross-arranged, and the height of the dispersion rod 2 close to the auxiliary rod 3 is higher than the height of the dispersion rod 2 away from the auxiliary rod 3, when the dispersion rod 2 moves downward, the tea leaves that fall to the top of the dispersion rod 1 and stick together are dispersed, ensuring that each piece of tea can fully contact the hot air during the withering, so that the tea leaves can be heated evenly, the aroma components in the tea leaves can be better transformed and released, which is conducive to the formation and development of the aroma, so that the tea leaves have a better aroma, and at the same time, the color of the tea leaves is made more consistent, the color difference is reduced, and the taste is improved. The appearance quality of the tea leaves can be improved by avoiding uneven withering due to the tea leaves sticking together and part of the tea leaves being blocked and unable to receive sufficient heat treatment, thereby improving the quality of the tea leaves. It can also avoid the formation of hot spots during the withering process due to the tea leaves sticking together, which may cause local overheating of the tea leaves and affect the quality of the tea leaves. It ensures that the tea leaves as a whole receive appropriate heat treatment, thereby improving the quality of the tea leaves. Compared with the existing method of dispersing the tea leaves by mechanical stirring, this dispersion method uses a dispersion rod 1 and a dispersion rod 2 with a higher height to disperse the tea leaves, which can reduce the mechanical damage to the tea leaves during dispersion, the loss of tea leaves caused by the dispersion, and the tea leaves in the final product. The tea leaves to be withered can be dispersed in advance, and impurities such as tea branches, tea stems, soil, sand and gravel wrapped in the tea leaves can be prevented from entering the withering tube together with the tea leaves, affecting the quality of the final product.

[0023] 2. Through the filter plate connected with the spring, when in use, when the auxiliary rod three moves downward to the pressing rod, the auxiliary rod three presses the filter plate downward through the pressing rod, and the spring connected to the filter plate is stretched. At the same time, the spring stores a certain elastic potential energy. When the auxiliary rod three moves upward, there is no external force pressing the filter plate. At this time, the elastic potential energy stored in the spring is released, thereby driving the filter plate to vibrate to a certain extent. Since the filter plate is inclined, the height of the filter plate away from the killing cylinder is higher than the height of the filter plate close to the killing cylinder. The filter plate extends to the inside of the killing cylinder through the connection between the feed hopper and the killing cylinder, and filter holes are evenly opened on the surface of the filter plate. Therefore, the filter plate vibrates. When the tea leaves dispersed by the dispersion rod are transported to the withering cylinder for withering treatment, impurities such as tea branches, tea stems, soil, sand and gravel in the tea leaves can be removed. Removing impurities such as tea branches, tea stems, soil, sand and gravel can prevent them from affecting the taste, aroma and appearance of the tea leaves. Separating them can help produce purer and higher-quality tea leaves, and can also avoid the poor taste and aroma caused by less soluble components in tea branches and tea stems, thereby improving the quality of the final tea product, making it taste more delicate and the aroma more pure. In addition, it also helps to ensure that the tea products produced meet food safety standards and protect the health of consumers.

[0024] 3. By meshing gear two with gear three, when in use, the driving shaft drives gear three to rotate in the opposite direction to gear two through gear two. When gear three rotates, it drives gear two to rotate in the opposite direction through the meshing teeth. Therefore, the cleaning rod connected to the driving shaft through connecting rod one rotates in the opposite direction to the withering cylinder inside the withering cylinder. When the cleaning rod rotates, the adhered parts of the tea leaves being withered inside the withering cylinder are dispersed to ensure that each piece of tea can fully contact the hot air, so that the tea leaves can be heated more evenly, and ensure that each piece of tea can reach the ideal withering degree, avoiding the situation that some tea leaves are over-withered and some tea leaves are under-withered. At the same time, the uniform heating of the tea leaves during withering helps to quickly inactivate the enzymes in the tea leaves and stop the fermentation process, thereby better retaining the quality characteristics of the tea leaves such as color, aroma and taste, and the dispersed tea leaves can absorb the heat in the hot air faster, improve the utilization efficiency of the hot air, reduce energy consumption, and keep the tea leaves loose after withering, which is beneficial to the subsequent processing steps such as rolling and drying.

[0025] 4. By connecting the connecting rod 2 connected to the auxiliary ring with the nut, after the tea leaves inside the withering cylinder are withered, the user rotates the nut counterclockwise to move the nut away from the withering cylinder. When the nut moves, the auxiliary ring is driven by the connecting rod 2 to move toward the feed hopper. When the auxiliary ring moves, the connecting rod 1 connected to the auxiliary ring pushes the cleaning rod to fit the inner wall of the withering cylinder. Afterwards, as the active shaft and the withering cylinder rotate in opposite directions, the cleaning block connected to the cleaning rod can clean the inner wall of the withering cylinder. Compared with the existing direct wiping and cleaning of the inside of the withering cylinder, the rotating cleaning block can more thoroughly clean the debris, tea juice, etc. adhered to the inner wall of the withering cylinder, ensuring that there is no Residual stains. At the same time, the cleaning block has the same cleaning force on each area when cleaning the withering tube, which can avoid incomplete cleaning or excessive wear of certain areas due to uneven wiping force. At the same time, it can avoid some tea debris, tea juice, etc. remaining in the withering tube during withering, and mixing with new tea leaves during the next withering, causing cross contamination, ensuring the quality and hygienic safety of each batch of withered tea leaves, and avoiding the formation of dirt on the inner wall of the withering tube due to the residue in the withering tube not being cleaned, affecting the uniform distribution of hot air and the heat transfer effect, ensuring that the hot air can act evenly on the tea leaves, improving the withering quality, and avoiding the corrosion of the inner wall of the withering tube caused by the accumulation of dirt and residue. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the cutaway structure of the main body of the present invention;

[0028] Figure 3It is a schematic diagram of the cutaway structure of the feed hopper of the present invention;

[0029] Figure 4 For the present invention Figure 3 A is a schematic diagram of the enlarged structure of the middle part;

[0030] Figure 5 This is a schematic diagram of the cutaway structure of the killing tube of the present invention;

[0031] Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure of B;

[0032] Figure 7 This is a schematic diagram of the cross-sectional structure of the driving shaft of the present invention;

[0033] Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure of C in the middle;

[0034] Fig. 9 For the present invention Figure 7 Schematic diagram of the enlarged structure of D in the figure.

[0035] The numbers in the figure represent:

[0036] 1. Fixed frame; 2. Feed hopper; 3. Killing tube; 4. Auxiliary rod 1; 5. Dispersion rod 1; 6. Auxiliary rod 2; 7. Auxiliary rod 3; 8. Dispersion rod 2; 9. Connecting column 1; 10. Rotating shaft; 11. Slide groove; 12. Connecting column 2; 13. Gear 1; 14. Driving shaft; 15. Toothed disc; 16. Fixed block; 17. Spring; 18. Filter plate; 19. Pressing rod; 20. Diverter pipe; 21. Through hole; 22. Auxiliary ring; 23. Connecting rod 1; 24. Cleaning rod; 25. Connecting rod 2; 26. Threaded groove; 27. Nut; 28. Gear 2; 29. ​​Gear 3; 30. Meshing teeth; 31. Spiral blade. DETAILED DESCRIPTION

[0037] 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 creative work are within the scope of protection of the present invention.

[0038] refer to Figures 1 to 9A tea-tea-withering device with uniform hot air distribution according to a preferred embodiment of the present invention will be described in detail below. A tea-tea-withering device with uniform hot air distribution comprises a fixed frame 1, a feed hopper 2 is fixedly connected to the upper surface of the fixed frame 1, a withering tube 3 is connected to one side of the feed hopper 2, an auxiliary rod 4 is fixedly connected to the inner wall of the feed hopper 2, a dispersion rod 5 is evenly fixedly connected to the side of the auxiliary rod 4 close to the vertical center line of the feed hopper 2, an auxiliary rod 2 6 is evenly fixedly connected to the upper surface of the dispersion rod 5, an auxiliary rod 3 7 is slidably connected to the inner wall of the feed hopper 2 and the side away from the auxiliary rod 4, a dispersion rod 2 8 is evenly fixedly connected to the side of the auxiliary rod 3 7 close to the vertical center line of the feed hopper 2, and a connecting column 9 is fixedly connected to the side of the auxiliary rod 3 7 away from the dispersion rod 2 8. A straight slot is provided on one side of the feed hopper 2 near the auxiliary rod 3 7, and a connecting column 19 extends to the outside of the feed hopper 2 through the straight slot. The outer surface of the feed hopper 2 is rotatably connected with a rotating shaft 10, and a slide groove 11 is provided on the outer surface of the rotating shaft 10. The end of the connecting column 19 extending to the outside of the feed hopper 2 is slidably connected to the inside of the slide groove 11, and the bottom end of the rotating shaft 10 is fixedly connected with a connecting column 2 12, and the end of the connecting column 2 12 away from the rotating shaft 10 is fixedly connected with a gear 13. The upper surface of the fixed frame 1 is rotatably connected with a driving shaft 14, and the driving shaft 14 is fixedly connected to the output shaft end of the motor. The end of the driving shaft 14 near the withering tube 3 passes through the feed hopper 2 and the withering tube 3 and extends to the outside of the withering tube 3. The outer surface of the driving shaft 14 is fixedly connected with a toothed disc 15, and the toothed disc 15 is meshed with the gear 13.

[0039] The auxiliary rod 2 6 is arranged in an "X" shape which is not connected in the middle, and a rubber pad is attached to the outer surface of the auxiliary rod 2 6 to reduce mechanical damage to the tea leaves when they are dispersed.

[0040] The dispersion rod 1 5 and the dispersion rod 2 8 are symmetrically cross-arranged, and the height of the dispersion rod 2 8 close to the auxiliary rod 3 7 is higher than the height of the dispersion rod 2 8 away from the auxiliary rod 3 7.

[0041] The slide groove 11 is composed of two arc grooves and two vertical grooves, and the two ends of the arc groove are connected through a vertical groove.

[0042] A fixed block 16 is fixedly connected to the inner wall of the feed hopper 2, and the fixed block 16 is symmetrically arranged with reference to the vertical center line of the feed hopper 2. A spring 17 is fixedly connected to the lower surface of the fixed block 16, and a filter plate 18 is fixedly connected to the end of the spring 17 away from the fixed block 16. The filter plate 18 is inclined, and the height of the filter plate 18 away from the withering cylinder 3 is higher than the height of the filter plate 18 close to the withering cylinder 3. The filter plate 18 extends to the inside of the withering cylinder 3 through the connection between the feed hopper 2 and the withering cylinder 3, and filter holes are evenly penetrated on the surface of the filter plate 18. A pressing rod 19 is fixedly connected to the upper surface of the filter plate 18, and the top end of the pressing rod 19 penetrates the fixed block 16 and extends to above the fixed block 16, and the pressing rod 19 and the auxiliary rod 3 7 are located on the same vertical section.

[0043] The interior of the driving shaft 14 is set as a cavity, one end of the driving shaft 14 setting the cavity is connected to the air pump, the outer surface of the driving shaft 14 located inside the killing tube 3 is evenly connected with a shunt pipe 20, and the outer surface of the shunt pipe 20 is evenly opened with through holes 21.

[0044] The outer surface of the driving shaft 14 located inside the withering tube 3 is slidably connected with an auxiliary ring 22, and the outer surface of the auxiliary ring 22 is rotatably connected with a connecting rod 23. The end of the connecting rod 23 away from the auxiliary ring 22 is rotatably connected with a cleaning rod 24, and the side of the cleaning rod 24 close to the inner wall of the withering tube 3 is detachably connected with a cleaning block. The cleaning rod 24 is slidably connected to the inner wall of the withering tube 3, and the side of the auxiliary ring 22 close to the feed hopper 2 is fixedly connected with a connecting rod 25. The auxiliary ring 22, connecting rod 1 23, and connecting rod 25 are distributed in a circular array with the center point of the driving shaft 14 as a reference. A threaded groove 26 is provided on the outer surface of the driving shaft 14 located inside the feed hopper 2, and a nut 27 is threadedly connected to the threaded groove 26 on the outer surface of the driving shaft 14, and the end of the connecting rod 25 away from the auxiliary ring 22 is rotatably connected to the nut 27.

[0045] The driving shaft 14 extends to the outer surface of the withering tube 3 and is fixedly connected to gear 28. The upper surface of the fixed frame 1 is rotatably connected to gear 3 29, and gear 28 and gear 3 29 are meshed. The withering tube 3 is fixedly connected to one side close to gear 28 with meshing teeth 30, and meshing teeth 30 and gear 3 29 are meshed.

[0046] The inner wall of the withering cylinder 3 is fixedly connected with a spiral blade 31. When the withering cylinder 3 rotates, the spiral blade 31 is driven to rotate. The spiral blade 31 pushes the tea leaves inside the withering cylinder 3 from one end of the withering cylinder 3 close to the feed hopper 2 to the other end of the withering cylinder 3 away from the feed hopper 2, so that the tea leaves move evenly inside the withering cylinder 3.

[0047] The following is the entire working process and working principle of the above embodiment:

[0048] Before use, the user turns on the switches of the motor and the air pump. The output shaft end of the motor drives the active shaft 14 fixedly connected thereto to rotate synchronously. The air pump transports hot air to the inside of the diversion tube 20 through the cavity of the active shaft 14, and then flows to the inside of the withering tube 3 through the through holes 21 evenly opened on the surface of the diversion tube 20 to contact the tea leaves.

[0049] When in use, first, the picked tea leaves are transported to the inside of the feed hopper 2 through the opening at the top of the feed hopper 2. After entering the feed hopper 2, the tea leaves fall onto the top of the dispersion rods 5. The non-adherent tea leaves, due to their smaller volume than the adhered tea leaves, can directly fall through the gaps between the dispersion rods 5 to the upper surface of the dispersion rods 8 below, while the adhered tea leaves will be intercepted by the dispersion rods 5.

[0050] Next, when the driving shaft 14 rotates, it drives the toothed disc 15 fixedly connected to the surface to rotate. When the toothed disc 15 rotates, it drives the gear 13 meshing with it to rotate. When the gear 13 rotates, it drives the upper rotating shaft 10 to rotate through the connecting column 2 12 fixedly connected to it. When the rotating shaft 10 rotates, it drives the slide groove 11 opened on the surface of the rotating shaft 10 to rotate. When the slide groove 11 rotates, it pushes the connecting column 19 to slide inside the straight groove. Since the slide groove 11 is composed of two arc grooves and two vertical grooves, and the two ends of the arc groove are connected by a vertical groove respectively, the slide groove 11 pushes the connecting column 19 to slide up and down inside the straight groove. When the connecting column 19 slides, the auxiliary rod 37 drives the dispersion rod 28 fixedly connected thereto to slide up and down inside the feed hopper 2. Since the dispersion rod 28 and the dispersion rod 15 are arranged crosswise, the height of the dispersion rod 28 close to the auxiliary rod 37 is higher than the height of the dispersion rod 28 away from the auxiliary rod 37, and the upper surface of the dispersion rod 15 is provided with an "X"-shaped auxiliary rod 26 which is not connected in the middle. Therefore, when the dispersion rod 28 slides up and down, the lower end of the dispersion rod 28 first contacts the tea leaves above the dispersion rod 15, and the higher end contacts the tea leaves above the dispersion rod 15 later, so that the tea leaves stuck together are The two sides of the tea leaves are subjected to force for different periods of time, thereby dispersing them. After the stuck tea leaves are dispersed, each piece of tea can be fully exposed to the hot air during the withering process, which can make the tea leaves evenly heated, so that the aroma components in the tea leaves can be better transformed and released, which is conducive to the formation and development of the aroma, and makes the tea leaves have a better aroma. At the same time, the color of the tea leaves is made more consistent, the color difference is reduced, the appearance quality of the tea leaves is improved, and the tea leaves are prevented from sticking together and some tea leaves are blocked and cannot be fully heat treated, resulting in uneven withering, thereby improving the quality of the tea leaves, and also avoiding the formation of uneven withering caused by the adhesion of tea leaves during the withering process. Hot spots are formed, causing local tea leaves to be overheated, affecting the quality of the tea leaves, ensuring that the tea leaves as a whole are appropriately heat treated, thereby improving the quality of the tea leaves. Compared with the existing method of dispersing by mechanical stirring, this dispersion method uses a dispersion rod 1 5 and a dispersion rod 2 8 with a higher height to disperse the tea leaves, which can reduce the mechanical damage to the tea leaves during dispersion, the loss of tea leaves caused, and the tea leaves in the final product. The tea leaves to be withered are dispersed in advance, and impurities such as tea branches, tea stems, soil, and sand and gravel wrapped in the tea leaves can be prevented from entering the interior of the withering tube 3 together with the tea leaves, affecting the quality of the final product;

[0051] Furthermore, when the auxiliary rod three 7 moves downward to the pressing rod 19, due to the filter plate 18 connected to the spring 17, when in use, when the auxiliary rod three 7 moves downward to the pressing rod 19, the auxiliary rod three 7 presses the filter plate 18 downward through the pressing rod 19, and the spring 17 connected to the filter plate 18 is stretched and stores a certain elastic potential energy. When the auxiliary rod three 7 moves upward, there is no external force pressing the filter plate 18. At this time, the elastic potential energy stored in the spring 17 is released, and then the spring 17 can drive the filter plate 18 to vibrate to a certain extent. Since the filter plate 18 is inclined, the height of the filter plate 18 away from the killing cylinder 3 is higher than the height of the filter plate 18 close to the killing cylinder 3. The filter plate 18 extends to the killing cylinder 3 through the connection between the feed hopper 2 and the killing cylinder 3. The inside of the green tube 3 and the surface of the filter plate 18 are evenly penetrated with filter holes. Therefore, when the filter plate 18 vibrates, it can transport the tea leaves dispersed by the dispersion rod 28 to the inside of the withering tube 3 for withering treatment, and at the same time, it can separate impurities such as tea branches, tea stems, soil and sand and gravel in the tea leaves. Removing impurities such as tea branches, tea stems, soil and sand and gravel can prevent them from affecting the taste, aroma and appearance of the tea leaves. Separating them helps to produce purer and higher-quality tea leaves, and can also avoid the poor taste and aroma caused by the small amount of soluble components in the tea branches and tea stems, thereby improving the quality of the final tea product, making it taste more delicate and the aroma more pure. In addition, it also helps to ensure that the produced tea products meet food safety standards and protect the health of consumers.

[0052] Secondly, when the driving shaft 14 rotates, it drives the gear 2 28 fixedly connected to the driving shaft 14 to rotate synchronously. Since the gear 28 is meshed with the gear 3 29, and the gear 3 29 is meshed with the meshing teeth 30 fixedly connected to the withering tube 3, when the gear 2 28 rotates, the withering tube 3 and the gear 2 28 fixedly connected to the meshing teeth 30 are driven to rotate in opposite directions through the gear 3 29. At the same time, when the driving shaft 14 rotates, it drives the connecting rod 1 23 connected to the driving shaft 14 through the auxiliary ring 22 to rotate. When the connecting rod 1 23 rotates, it drives the cleaning rod 24 connected to the connecting rod 1 23 to rotate. When the cleaning rod 24 and the withering tube 3 rotate in opposite directions, the cleaning rod 24 can clean the part of the tea leaves that are being withered inside the withering tube 3 again. Dispersion, to avoid the tea leaves sticking together again due to the release of water in the tea leaves when the tea leaves are withered in the withering cylinder 3, to ensure that each tea leaf can be fully exposed to the hot air, so that the tea leaves can be heated more evenly, to ensure that each tea leaf can reach the ideal degree of withering, to avoid the situation that some tea leaves are over-withered and some tea leaves are under-withered, at the same time, the tea leaves are evenly heated during withering, which helps to quickly inactivate the enzymes in the tea leaves and stop the fermentation process, so as to better preserve the quality characteristics of the tea leaves such as color, aroma and taste, and the dispersed tea leaves can absorb the heat in the hot air faster, improve the utilization efficiency of the hot air, reduce energy consumption, and keep the tea leaves loose after withering, which is conducive to the subsequent processing steps such as rolling and drying;

[0053] Furthermore, when the withering cylinder 3 rotates, the spiral blades 31 fixedly connected to the inner wall of the withering cylinder 3 are driven to rotate. When the spiral blades 31 rotate, they can push the tea leaves inside the withering cylinder 3 from one end of the withering cylinder 3 close to the feed hopper 2 to the other end of the withering cylinder 3 away from the feed hopper 2, so that the tea leaves can move evenly inside the withering cylinder 3.

[0054] Finally, after the tea leaves inside the withering tube 3 are withered, the user rotates the nut 27 counterclockwise. When the nut 27 rotates counterclockwise, it moves in the direction away from the withering tube 3. When the nut 27 moves, it drives the auxiliary ring 22 fixedly connected to the connecting rod 25 through the connecting rod 25 to move in the direction close to the feed hopper 2. Since the cleaning rod 24 is slidably connected to the inner wall of the withering tube 3, the auxiliary ring 22 pushes the cleaning rod 24 to fit the inner wall of the withering tube 3 through the connecting rod 1 23 connected to the auxiliary ring 22 when it moves. Afterwards, as the active shaft 14 drives the cleaning rod 24 and the withering tube 3 to rotate in the opposite direction through the connecting rod 1 23, the cleaning block connected to the cleaning rod 24 can clean the inner wall of the withering tube 3. Compared with the existing direct wiping and cleaning of the inside of the withering tube 3, the rotating cleaning The block can more thoroughly clean the debris, tea juice, etc. adhered to the inner wall of the withering tube 3 to ensure that there are no residual stains. At the same time, the cleaning block has the same cleaning force on each area when cleaning the withering tube 3, which can avoid incomplete cleaning or excessive wear of certain areas due to uneven wiping force. At the same time, it can avoid some tea debris, tea juice, etc. remaining in the withering tube 3 during withering, and mixing them with new tea leaves during the next withering, causing cross contamination, ensuring the quality and hygienic safety of each batch of withered tea leaves, and also avoiding the formation of dirt on the inner wall of the withering tube 3 due to the residue in the withering tube 3 not being cleaned up, affecting the uniform distribution of hot air and the heat transfer effect, ensuring that the hot air can act evenly on the tea leaves, improving the withering quality, and also avoiding the corrosion of the inner wall of the withering tube 3 caused by the accumulation of dirt and residues.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tea leaf-withering device with uniform hot air distribution, comprising a fixed frame (1), a feed hopper (2) fixedly connected to the upper surface of the fixed frame (1), a side of the feed hopper (2) connected to a withering cylinder (3), characterized in that: The inner wall of the feed hopper (2) is fixedly connected with an auxiliary rod 1 (4), and a dispersion rod 1 (5) is evenly fixedly connected to the side of the auxiliary rod 1 (4) close to the vertical center line of the feed hopper (2), and an auxiliary rod 2 (6) is evenly fixedly connected to the upper surface of the dispersion rod 1 (5). The inner wall of the feed hopper (2) and the side away from the auxiliary rod 1 (4) are slidably connected with an auxiliary rod 3 (7), and the side of the auxiliary rod 3 (7) close to the vertical center line of the feed hopper (2) is evenly fixedly connected with the dispersion rod 2 (8), and the side of the auxiliary rod 3 (7) away from the dispersion rod 2 (8) is fixedly connected with a connecting column 1 (9), and a straight slot is formed through the side of the feed hopper (2) close to the auxiliary rod 3 (7), and the connecting column 1 (9) extends to the outside of the feed hopper (2) through the straight slot. The outer surface of the feed hopper (2) is rotatably connected to a rotating shaft (10), and a slide groove (11) is provided on the outer surface of the rotating shaft (10). The end of the connecting column 1 (9) extending to the outside of the feed hopper (2) is slidably connected to the inside of the slide groove (11). The bottom end of the rotating shaft (10) is fixedly connected to a connecting column 2 (12), and the end of the connecting column 2 (12) away from the rotating shaft (10) is fixedly connected to a gear 1 (13). The upper surface of the fixed frame (1) is rotatably connected to a driving shaft (14), and the end of the driving shaft (14) close to the withering tube (3) passes through the feed hopper (2) and the withering tube (3) and extends to the outside of the withering tube (3). The outer surface of the driving shaft (14) is fixedly connected to a toothed disc (15), and the toothed disc (15) is meshed with the gear 1 (13).

2. The tea-tea-withering device with uniform hot air distribution according to claim 1, characterized in that: The auxiliary rod 2 (6) is arranged in an "X" shape without being connected in the middle, and a rubber pad is attached to the outer surface of the auxiliary rod 2 (6).

3. The tea-tea-withering device with uniform hot air distribution according to claim 1, characterized in that: The dispersion rod 1 (5) and the dispersion rod 2 (8) are symmetrically arranged in a cross-shaped manner, and the height of the dispersion rod 2 (8) close to the auxiliary rod 3 (7) is higher than the height of the dispersion rod 2 (8) away from the auxiliary rod 3 (7).

4. The tea-tea-withering device with uniform hot air distribution according to claim 1, characterized in that: The sliding groove (11) consists of two arc grooves and two vertical grooves, and the two ends of the arc groove are connected through the vertical grooves.

5. The tea-tea-withering device with uniform hot air distribution according to claim 1, characterized in that: The inner wall of the feed hopper (2) is fixedly connected with a fixed block (16), and the fixed block (16) is symmetrically arranged with reference to the vertical center line of the feed hopper (2), and the lower surface of the fixed block (16) is fixedly connected with a spring (17), and the end of the spring (17) away from the fixed block (16) is fixedly connected with a filter plate (18), and the filter plate (18) is inclined. The height of the filter plate (18) away from the withering tube (3) is higher than the height of the filter plate (18) close to the withering tube (3), and the filter plate (18) extends to the inside of the withering tube (3) through the connection between the feed hopper (2) and the withering tube (3). The upper surface of the filter plate (18) is fixedly connected with a pressing rod (19), and the top end of the pressing rod (19) passes through the fixed block (16) and extends to the top of the fixed block (16), and the pressing rod (19) and the auxiliary rod three (7) are located on the same vertical section.

6. The tea-tea-withering device with uniform hot air distribution according to claim 1, characterized in that: The interior of the driving shaft (14) is arranged as a cavity, and the outer surface of the driving shaft (14) located inside the killing tube (3) is evenly connected with a shunt pipe (20), and the outer surface of the shunt pipe (20) is evenly provided with through holes (21).

7. The tea-tea-withering device with uniform hot air distribution according to claim 1, characterized in that: The outer surface of the driving shaft (14) located inside the killing tube (3) is slidably connected to an auxiliary ring (22), and the outer surface of the auxiliary ring (22) is rotatably connected to a connecting rod (23). The end of the connecting rod (23) away from the auxiliary ring (22) is rotatably connected to a cleaning rod (24), and the cleaning rod (24) is slidably connected to the inner wall of the killing tube (3). The auxiliary ring (22) is fixedly connected to a connecting rod (25) on the side close to the feed hopper (2). The auxiliary ring (22), connecting rod (23) and connecting rod (25) are all distributed in a circular array with the center point of the driving shaft (14) as a reference. A threaded groove (26) is provided on the outer surface of the driving shaft (14) located inside the feed hopper (2). A nut (27) is threadedly connected to the threaded groove (26) on the outer surface of the driving shaft (14), and the end of the connecting rod (25) away from the auxiliary ring (22) is rotatably connected to the nut (27).

8. The tea-tea-withering device with uniform hot air distribution according to claim 1, characterized in that: The driving shaft (14) extends to the outer surface of the withering tube (3) and is fixedly connected to gear 2 (28). The upper surface of the fixed frame (1) is rotatably connected to gear 3 (29). Gear 2 (28) and gear 3 (29) are meshed. The withering tube (3) is fixedly connected to a side close to gear 2 (28) with a meshing tooth (30). The meshing tooth (30) and gear 3 (29) are meshed.

9. The tea-tea-withering device with uniform hot air distribution according to claim 1, characterized in that: The inner wall of the withering cylinder (3) is fixedly connected with a spiral blade (31).

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