Tea flower freeze-dried powder extraction device

Abstract

The invention discloses a tea flower freeze-dried powder extraction device, and belongs to the field of raw material extraction, the tea flower freeze-dried powder extraction device comprises an extraction cylinder, the top of the outer surface of the extraction cylinder is fixedly provided with a driving motor, the output end of the driving motor penetrates through the extraction cylinder and is fixedly connected with a stirring rod, the extraction cylinder is internally provided with a freeze-drying cavity, and the bottom of the freeze-drying cavity is fixedly provided with a manually controlled valve. According to the tea flower freeze-drying device, through the arrangement of a condensation pipe, a stirring rod, a driving motor, a fan and a first air inlet hole, the temperature change in the freeze-drying cavity is achieved, the freezing purpose is achieved, tea flowers located at the bottommost part of a tea flower pile are separated from tea flowers of other parts of the tea flower pile through a stirring plate, the tea flower pile can be automatically laid on the stirring plate, and the tea flower freeze-drying device is convenient to use. And the rotating stirring plate can enable each part of the tea flower pile to continuously change the position along with the stirring plate, so that the tea flowers can be in full contact with cold air, the pre-freeze-drying process of the tea flowers is ensured, and the production quality of the tea flower freeze-dried powder is improved.

Description

Technical Field

[0001] The present invention relates to the field of raw material extraction, and more specifically, to a device for extracting freeze-dried tea tree flower powder. Background Art

[0002] Raw material extraction generally refers to the process of separating and purifying valuable or required components or substances from natural or preliminarily processed raw materials through physical, chemical, biological or other methods.

[0003] When extracting freeze-dried tea tree flower powder, first, the dust and residues on its surface are removed by washing, and then the tea tree flowers are put into a pre-freezing device for low-temperature treatment to crystallize the moisture in the tea tree flowers, ensuring to the greatest extent that the tea tree flowers will not be damaged during the freeze-drying process, which is convenient for subsequent grinding operations. Finally, the pre-freeze-dried tea tree flowers are subjected to freeze-dried powder cryogenic grinding treatment to complete the extraction of freeze-dried tea tree flower powder. During the pretreatment process, cold air is often used to freeze the tea tree flowers in the device. However, the tea tree flowers / freeze-dried powder concentrated in the device will accumulate at the bottom of the device after feeding. The tea tree flowers at the bottom of the tea tree flower pile cannot fully contact the cold air entering the device, resulting in poor pre-freezing effect and thus affecting the production quality of freeze-dried tea tree flower powder. Summary of the Invention

[0004] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a device for extracting freeze-dried tea tree flower powder.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A device for extracting freeze-dried tea tree flower powder, comprising an extraction cylinder. A driving motor is fixedly installed at the top of the outer surface of the extraction cylinder. The output end of the driving motor penetrates through the extraction cylinder and is fixedly connected to a stirring rod. A freeze-drying chamber is provided inside the extraction cylinder. The stirring rod is located inside the freeze-drying chamber. A stirring plate is fixedly sleeved at the bottom of the stirring rod. The stirring plate is designed in a spiral shape and has three-quarters of a turn. A sleeve is rotatably installed at the top end of the inner wall of the freeze-drying chamber. The opening of the sleeve faces downward. A fan fixedly sleeved on the outer surface of the stirring rod is arranged inside the sleeve. A condensing pipe is fixedly arranged at the top end of the inner wall of the freeze-drying chamber. The condensing pipe is located above the fan. The blowing direction of the fan is from top to bottom. The stirring rod is used to guide the air inside the sleeve into the freeze-drying chamber. Multiple groups of first air inlet holes are provided on the sleeve. Each group of first air inlet holes is located above the fan. A feeding port is fixedly arranged at the top end of the extraction cylinder. The switch of the feeding port can seal the feeding port. A manually controlled valve is fixedly arranged at the bottom of the freeze-drying chamber.

[0007] Further, a disc is rotatably and sealingly arranged at the bottom of the sleeve. Both ends of the disc are fixedly connected to the inner wall of the freeze-drying chamber. The disc is used to close the opening at the bottom of the sleeve. The stirring rod is designed with a hollow interior. A plurality of groups of second air inlet holes are fixedly arranged in the middle of the stirring rod. Each group of the second air inlet holes is located below the fan. Each group of the second air inlet holes is used to send gas into the interior of the stirring rod. A plurality of groups of air outlet holes are formed at the bottom of the stirring rod. Each group of the air outlet holes is used to introduce the gas inside the stirring rod into the freeze-drying chamber.

[0008] Further, a screw conveyor blade is fixedly sleeved on the outer surface of the sleeve. The outer ring of the screw conveyor blade contacts the inner wall of the freeze-drying chamber. A transmission member for rotating the sleeve is arranged inside the sleeve.

[0009] Further, the transmission member includes a toothed ring fixedly arranged at the bottom inner surface of the sleeve. The toothed ring is arranged in a ring shape. A first gear is also fixedly sleeved on the outer surface of the stirring rod. Two groups of second gears are symmetrically arranged on the disc. The two groups of the second gears are respectively meshed with the first gear. The second gears are respectively meshed with the toothed ring. The number of teeth of the first gear is less than that of the toothed ring.

[0010] Further, a plurality of groups of first communication holes are formed in the screw conveyor blade. Each group of the first communication holes is used in cooperation with the first air inlet holes. Each group of the first communication holes is used to introduce the gas inside the freeze-drying chamber into the interior of the sleeve.

[0011] Further, a plurality of groups of second communication holes are formed in the stirring plate. An air cavity is left between the stirring plate and the bottom of the freeze-drying chamber. The air cavity is communicated with the second communication holes. The upper ends of the plurality of groups of the air outlet holes are used for the gas flow inside the stirring rod and in the freeze-drying chamber. The lower ends of the plurality of groups of the air outlet holes are used for the gas flow inside the stirring rod and in the air cavity.

[0012] Further, a blocking plate is fixedly arranged at the bottom of the highest point of the horizontal position of the stirring plate. The blocking plate is used to separate the air cavity and the freeze-drying chamber.

[0013] Further, a reciprocating thread groove is formed on the outer surface of the stirring rod. The reciprocating thread groove is located above the fan. A ring sleeve is rotatably sleeved on the outer surface of the stirring rod. The ring sleeve is adapted to the reciprocating thread groove. A sliding ring is slidably sleeved on the outer surface of the condensing pipe. Ring-shaped sponges are fixedly connected to both the upper and lower ends of the sliding ring. The two groups of the ring-shaped sponges are slidably sleeved on the outer surface of the condensing pipe. A guiding slider is fixedly arranged at the position where the sliding ring contacts the inner wall of the sleeve. A guiding chute is formed on the inner wall of the sleeve. The guiding chute is used for the up and down sliding of the guiding slider. The ring sleeve is fixedly connected to the sliding ring.

[0014] Further, raised portions with the same inner and outer dimensions as those of the annular sponge are provided at both the upper and lower ends of the slip ring. The raised portions are used to squeeze the annular sponge. A water squeezing block is fixedly provided through the top of the extraction cylinder. The water squeezing block is fixedly and sealingly sleeved on the outer surface of the condensing pipe. The top of the condensing pipe extends to the outer surface of the extraction cylinder. A water squeezing cavity is formed inside the water squeezing block. The size of the water squeezing cavity is the same as that of the annular sponge. Multiple hoses are provided on the water squeezing block. The hoses are used to drain the water generated by squeezing the annular sponge to the outside of the extraction cylinder.

[0015] Further, a ring plate is rotatably provided at the top of the extraction cylinder. The water squeezing block, the condensing pipe, and the upward extending portions of the hoses are all provided on the ring plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] (1) By providing the condensing pipe, the stirring rod, the driving motor, the fan, and the first air inlet holes, the present invention realizes the temperature change in the freeze-drying cavity to achieve the purpose of freezing. Also, through the turning plate, the tea tree flowers at the bottom of the tea tree flower pile are separated from the tea tree flowers in other parts of the tea tree flower pile, and the tea tree flower pile can be automatically spread flat on the turning plate. Moreover, the rotating turning plate enables each part of the tea tree flower pile to continuously change its position, so that the tea tree flowers can be fully contacted with the cold air, thus ensuring the pre-freeze-drying process of the tea tree flowers and improving the production quality of the freeze-dried powder of the tea tree flowers.

[0018] (2) Through the design of the first air inlet holes, the second air inlet holes, the fan, and the air outlet holes, the present invention can realize the air circulation inside the freeze-drying cavity. Under the action of the condensing pipe, the water contained in the gas inside the extraction cylinder is continuously condensed, gradually reducing the water content in the gas, and reducing the situation where the water in the gas adheres to the surface of the tea tree flowers and causes the surface of the tea tree flowers to shrink when the water condenses after the temperature drops, thereby reducing the influence of the water in the gas during the pre-freeze-drying process of the tea tree flowers and further improving the production quality of the freeze-dried powder of the tea tree flowers.

[0019] (3) Through the first communication holes and the second communication holes provided, the cold air can be fully contacted with the bottom of the tea tree flowers, and the tea tree flowers blocking the surfaces of the first communication hole and the second communication hole can also be blown away. Through the auger fan blades and the turning plate, the flowing gas can also blow away the tea tree flowers blocking the surface of the first communication hole, facilitating the subsequent dispersion and spreading of the tea tree flowers on the turning plate, further ensuring the pre-freeze-drying effect of the tea tree flowers and further improving the production quality of the freeze-dried powder of the tea tree flowers. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0021] Figure 2 Front cross-sectional view of the internal structure of the present invention;

[0022] Figure 3 Combined schematic diagram of the stirring rod and the stirring plate of the present invention;

[0023] Figure 4 Front schematic view of the stirring rod of the present invention;

[0024] Figure 5 Combined schematic diagram of the internal structure of the sleeve of the present invention;

[0025] Figure 6 Combined schematic diagram of the collar, the condenser tube, the slip ring, the annular sponge and the fan of the present invention;

[0026] Figure 7 Combined schematic diagram of the condenser tube, the collar and the slip ring of the present invention;

[0027] Figure 8 For the present invention Figure 7 Enlarged view of the structure at position A in

[0028] Explanation of the reference numerals in the figure:

[0029] 1. Extraction cylinder; 2. Driving motor; 3. Stirring rod; 4. Freeze-drying chamber; 5. Stirring plate; 6. Sleeve; 7. Fan; 8. Condenser tube; 9. First air inlet hole; 10. Feeding port; 11. Valve; 12. Disc; 13. Second air inlet hole; 14. Air outlet hole; 15. Screw conveyor blade; 16. Transmission member; 17. Tooth ring; 18. First gear; 19. Second gear; 20. First communication hole; 21. Second communication hole; 22. Air cavity; 23. Sealing plate; 24. Reciprocating thread groove; 25. Collar; 26. Slip ring; 27. Annular sponge; 28. Guide slider; 29. Guide chute; 30. Protrusion; 31. Water squeezing block; 32. Water squeezing cavity; 33. Hose; 34. Ring plate. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Please refer to Figures 1 to 8, A device for extracting freeze-dried tea tree flower powder, including an extraction cylinder 1. At the top of the outer surface of the extraction cylinder 1, a driving motor 2 is fixedly installed. The output end of the driving motor 2 penetrates through the extraction cylinder 1 and is fixedly connected to a stirring rod 3. Inside the extraction cylinder 1, a freeze-drying chamber 4 is opened. The stirring rod 3 is located inside the freeze-drying chamber 4. At the bottom of the stirring rod 3, a stirring plate 5 is fixedly sleeved. The stirring plate 5 is designed in a spiral shape and has three-quarters of a turn. At the top of the inner wall of the freeze-drying chamber 4, a sleeve 6 is rotatably installed. The opening of the sleeve 6 faces downward. Inside the sleeve 6, a fan 7 fixedly sleeved on the outer surface of the stirring rod 3 is arranged. At the top of the inner wall of the freeze-drying chamber 4, a condensing pipe 8 is fixedly arranged. The condensing pipe 8 is located above the fan 7. The blowing direction of the fan 7 is from top to bottom. The stirring rod 3 is used to guide the air inside the sleeve 6 into the freeze-drying chamber 4. Multiple groups of first air inlet holes 9 are opened on the sleeve 6. Each group of first air inlet holes 9 is located above the fan 7. At the top of the extraction cylinder 1, a feeding port 10 is fixedly arranged. The switch of the feeding port 10 can seal the feeding port 10. At the bottom of the freeze-drying chamber 4, a manually controlled valve 11 is fixedly arranged.

[0032] When using the equipment to pre-freeze-dry the tea tree flower powder, first open the feeding port 10, and put the tea tree flower powder into the extraction cylinder 1 through the feeding port 10. Then start the driving motor 2 to drive the stirring rod 3 to rotate. While the stirring rod 3 rotates, it will drive the fan 7 to work. The gas inside the freeze-drying chamber 4 will pass through the outside of the sleeve 6 through the first air inlet holes 9. When the gas enters the inside of the sleeve 6, it will contact the condensing pipe 8 inside the sleeve 6 and exchange heat with the condensing pipe 8. At this time, the temperature of the gas will decrease and be blown back into the freeze-drying chamber 4 again by the fan 7 through the stirring rod 3, realizing the temperature change inside the freeze-drying chamber 4 and achieving the purpose of freezing. While the stirring rod 3 rotates, through the action of the stirring plate 5, the tea tree flowers at the bottom of the tea tree flower pile will be separated from the tea tree flowers in other parts of the tea tree flower pile, and the tea tree flower pile can be automatically spread on the stirring plate 5. And the rotating stirring plate 5 can make each part of the tea tree flower pile continuously change its position along with the stirring plate 5, so that the tea tree flowers can fully contact with the cold air, thus ensuring the process of pre-freeze-drying the tea tree flowers and improving the production quality of the tea tree flower freeze-dried powder;

[0033] It should be particularly noted here that: the working principle of the condensing pipe 8 is that a cooling medium flows through the channels outside or inside the pipe wall, taking away the heat of the hot steam flowing inside the pipe. When the temperature of the steam drops below its dew point or boiling point, a phase change will occur, changing from a gaseous state to a liquid state to form condensate. The condensing pipe 8 is connected to an external low-temperature gas pipeline, and the external low-temperature gas pipeline is used to inject gas with gradually decreasing temperature into the condensing pipe 8.

[0034] Such as Figures 2 to 5As shown, a disc 12 is rotatably and sealed at the bottom of the sleeve 6. Both ends of the disc 12 are fixedly connected to the inner wall of the freeze-drying chamber 4. The disc 12 is used to close the opening at the bottom of the sleeve 6. The stirring rod 3 is designed with a hollow interior. A plurality of groups of second air inlet holes 13 are fixedly arranged in the middle of the stirring rod 3. Each group of second air inlet holes 13 is located below the fan 7. Each group of second air inlet holes 13 is used to send gas into the interior of the stirring rod 3. A plurality of groups of air outlet holes 14 are opened at the bottom of the stirring rod 3. Each group of air outlet holes 14 is used to introduce the gas inside the stirring rod 3 into the freeze-drying chamber 4.

[0035] A screw blade 15 is fixedly sleeved on the outer surface of the sleeve 6. The outer ring of the screw blade 15 contacts the inner wall of the freeze-drying chamber 4. A transmission member 16 for rotating the sleeve 6 is arranged inside the sleeve 6.

[0036] The transmission member 16 includes a toothed ring 17 fixedly arranged at the bottom of the inner surface of the sleeve 6. The toothed ring 17 is arranged in a ring shape. A first gear 18 is also fixedly sleeved on the outer surface of the stirring rod 3. Two groups of second gears 19 are symmetrically arranged on the disc 12. The two groups of second gears 19 are respectively meshed with the first gear 18. The second gears 19 are respectively meshed with the toothed ring 17. The number of teeth of the first gear 18 is less than the number of teeth of the toothed ring 17.

[0037] After the equipment is started, first, the gas inside the sleeve 6 will enter the interior of the stirring rod 3 through the second air inlet holes 13 under the action of the fan 7, and then be sprayed into the interior of the freeze-drying chamber 4 through the air outlet holes 14, and then return to the interior of the sleeve 6 again through the first air inlet holes 9, realizing the gas circulation inside the freeze-drying chamber 4. And in the process of each time the gas returns to the interior of the sleeve 6 through the first air inlet holes 9, it contacts the condensing pipe 8. Under the action of the condensing pipe 8, the moisture contained in the gas inside the extraction cylinder 1 is continuously condensed out, gradually reducing the moisture contained in the gas, reducing the moisture attached to the surface of the tea flowers. When the temperature drops, the surface of the tea flowers shrinks when the moisture condenses, thereby reducing the influence caused by the moisture in the gas during the pre-freeze-drying process of the tea flowers, and further improving the production quality of the freeze-dried tea flower powder;

[0038] When the stirring rod 3 rotates, it will first drive the first gear 18 to rotate. The first gear 18 will then drive the second gears 19 to rotate together. Finally, the toothed ring 17 meshed with the second gears 19 rotates, realizing the effect that the toothed ring 17 drives the sleeve 6 and the screw blade 15 to rotate in the opposite direction together, and further realizing the purpose of the screw blade 15 rotating to discharge the tea flowers.

[0039] Since the number of teeth of the toothed ring 17 is greater than the number of teeth of the first gear 18, the rotation speed of the screw blade 15 can be made less than the rotation speed of the fan 7, prolonging the time that the tea flowers stay on the screw blade 15 during the discharge of the tea flowers, leaving enough cooling time for the tea flowers on the screw blade 15 to facilitate the full contact of the tea flowers with the cold air;

[0040] It should be specifically noted here that the disc 12 is rotationally sleeved on the outer surface of the stirring rod 3.

[0041] As Figure 2 shown, a plurality of groups of first communication holes 20 are formed in the auger fan blade 15. Each group of first communication holes 20 is used in cooperation with the first air inlet hole 9, and each group of first communication holes 20 is used to introduce the gas in the freeze-drying chamber 4 into the inside of the sleeve 6.

[0042] When the fan 7 sucks the gas in the freeze-drying chamber 4 into the inside of the sleeve 6 through the first air inlet hole 9, in order to improve the gas flow velocity inside the freeze-drying chamber 4, at this time, a part of the gas can enter the inside of the sleeve 6 through the spiral auger fan blade 15, and another part of the gas can also enter the inside of the sleeve 6 through the first communication hole 20. Moreover, the gas entering the inside of the sleeve 6 through the first communication hole 20 can also fully contact the tea tree flowers at the bottom of the tea tree flower pile and perform freeze-drying treatment on them. And this part of the flowing gas can also blow away the tea tree flowers blocked on the first communication surface, which is convenient for the subsequent tea tree flowers to be scattered and laid on the stirring plate 5, further ensuring the pre-freeze-drying effect of the tea tree flowers and further improving the production quality of the freeze-dried powder of the tea tree flowers.

[0043] As Figure 2 and Figure 3 shown, a plurality of groups of second communication holes 21 are formed in the stirring plate 5. There is an air cavity 22 left between the stirring plate 5 and the bottom of the freeze-drying chamber 4. The air cavity 22 is communicated with the second communication holes 21. The upper parts of the plurality of air outlet holes 14 are used for the gas flow inside the stirring rod 3 and in the freeze-drying chamber 4, and the lower parts of the plurality of air outlet holes 14 are used for the gas flow inside the stirring rod 3 and in the air cavity 22.

[0044] The cold air entering the freeze-drying chamber 4 through the air outlet hole 14, a part of it will enter the inside of the air cavity 22 and be ejected upward through the second communication hole 21 to perform pre-freeze-drying treatment on the tea tree flowers located at the bottom of the stirring plate 5, which can perform pre-freeze-drying treatment on the tea tree flowers laid on the stirring plate 5 from each angle, further ensuring the pre-freeze-drying effect of the tea tree flowers and further improving the production quality of the freeze-dried powder of the tea tree flowers;

[0045] When the amount of tea tree flowers put in at one time through the feeding port 10 is too large, resulting in the accumulation of tea tree flowers on the auger fan blade 15, even with the function of the first communication hole 20, the tea tree flowers in the middle of the tea tree flower pile still cannot contact the cold air. At this time, through the conveying action of the auger fan blade 15, the tea tree flowers falling on the stirring plate 5 will gradually be laid flat on the stirring plate 5 under the action of the stirring plate 5, still ensuring the full contact between the tea tree flowers and the cold air, effectively solving the above problems and ensuring the pre-freeze-drying effect of the tea tree flowers.

[0046] As Figure 2As shown, a sealing plate 23 is fixedly arranged at the bottom of the highest point of the horizontal position of the stirring plate 5, and the sealing plate 23 is used to separate the air cavity 22 and the freeze-drying cavity 4.

[0047] When the tea tree flowers complete the pre-freeze-drying process inside the sleeve 6, the driving motor 2 is controlled to reverse through an external switch. At this time, the tea tree flowers laid flat on the stirring plate 5 will gradually move along the surface of the stirring plate 5 to the sealing plate 23 under the action of friction. At the same time, the valve 11 is manually opened. At this time, under the action of centrifugal force and the rotating sealing plate 23, the sealing plate 23 will gradually discharge the tea tree flowers inside the freeze-drying cavity 4 through the valve 11, achieving the effect of automatic feeding;

[0048] It should be particularly noted here that: the driving motor 2 is a forward and reverse motor. The driving motor 2 rotates forward to start the pre-freeze-drying process, and the driving motor 2 rotates in reverse to start discharging. The driving motor 2 is controlled by an external switch.

[0049] As Figures 4 - 8 shown, a reciprocating thread groove 24 is formed on the outer surface of the stirring rod 3. The reciprocating thread groove 24 is located above the fan 7. A ring sleeve 25 is rotatably sleeved on the outer surface of the stirring rod 3. The ring sleeve 25 is adapted to the reciprocating thread groove 24. A sliding ring 26 is slidably sleeved on the outer surface of the condensing pipe 8. Ring-shaped sponges 27 are fixedly connected to both the upper and lower ends of the sliding ring 26. The two groups of ring-shaped sponges 27 are slidably sleeved on the outer surface of the condensing pipe 8. A guiding slider 28 is fixedly arranged at the position where the sliding ring 26 contacts the inner wall of the sleeve 6. A guiding chute 29 is formed on the inner wall of the sleeve 6. The guiding chute 29 is used for the up and down sliding of the guiding slider 28. The ring sleeve 25 is fixedly connected to the sliding ring 26.

[0050] Since the guiding slider 28 can only slide up and down in the guiding chute 29, and the guiding chute 29 has a limiting effect on the guiding slider 28. When the driving motor 2 drives the stirring rod 3 to rotate, the ring sleeve 25 will drive the sliding ring 26 to make a reciprocating up and down movement. Furthermore, the sliding ring 26 will drive the ring-shaped sponge 27 to make a reciprocating up and down movement on the condensing pipe 8. At this time, the ring-shaped sponge 27 will wipe off the water droplets that have condensed on the surface of the condensing pipe 8. If there is too much water on the surface of the condensing pipe 8, the water will drip on the tea tree flowers, affecting the pre-freeze-drying effect of the tea tree flowers and reducing the influence of the gradually increasing water droplets on the surface of the condensing pipe 8 dripping due to gravity on the pre-freeze-drying process of the tea tree flowers.

[0051] As Figures 4 to 8As shown in the figure, protrusions 30 with the same inner and outer ring dimensions as those of the annular sponge are provided at both the upper and lower ends of the slip ring 26. The protrusions 30 are used to squeeze the annular sponge. A water squeezing block 31 is fixedly arranged through the top of the extraction cylinder 1. The water squeezing block 31 is fixedly and sealingly sleeved on the outer surface of the condensing pipe 8. The top of the condensing pipe 8 extends to the outer surface of the extraction cylinder 1. A water squeezing cavity 32 is formed inside the water squeezing block 31. The size of the water squeezing cavity 32 is the same as that of the annular sponge. Multiple groups of hoses 33 are arranged on the water squeezing block 31. The hoses 33 are used to drain the water generated by squeezing the annular sponge to the outside of the extraction cylinder 1.

[0052] A ring plate 34 is rotatably arranged at the top of the extraction cylinder 1. The water squeezing block 31, the condensing pipe 8 and the upward extending parts of the hoses 33 are all arranged on the ring plate 34.

[0053] To ensure the water absorption effect of the annular sponge, during each upward and downward movement of the slip ring 26, the annular sponge and the protrusions 30 will simultaneously enter the water squeezing cavity 32 of the water squeezing block 31. As the slip ring 26 continues to move, the protrusions 30 will squeeze the annular sponge inside the water squeezing cavity 32, thereby deforming the annular sponge. The water inside the annular sponge will be squeezed into the hoses 33 under the action of the hoses 33 and drained to the outside of the extraction cylinder 1. The squeezed sponge can continue to participate in the subsequent water absorption work, improving the automation degree of the equipment.

[0054] It should be particularly noted here that one-way valves can be arranged inside the hoses 33 to prevent the backflow of water. The hoses 33 located below the slip ring 26 extend from bottom to top to the outside of the extraction cylinder 1. The one-way valves are used to control the water in the water squeezing cavity 32 to enter the hoses 33. Due to the extrusion of water by the protrusions 30, the one-way valves can be opened under the extrusion action of the water.

[0055] Usage method: When using the equipment to pre-freeze-dry the tea flower freeze-dried powder, first open the feeding port 10, and put the tea flower freeze-dried powder into the extraction cylinder 1 through the feeding port 10. Then start the driving motor 2 to drive the stirring rod 3 to rotate and make the fan 7 work. The gas inside the freeze-drying cavity 4 will pass through the first air inlet hole 9 from the outside of the sleeve 6. When the gas enters the inside of the sleeve 6, it exchanges heat with the condensing pipe 8. At this time, the temperature of the gas will decrease and be blown back into the freeze-drying cavity 4 by the fan 7 through the stirring rod 3 again, realizing the temperature change inside the freeze-drying cavity 4 and achieving the purpose of freezing. While the stirring rod 3 is rotating, through the action of the turning plate 5, the tea flowers at the bottom of the tea flower pile will be separated from the other parts of the tea flower pile, and the tea flower pile can be automatically spread flat on the turning plate 5. Moreover, the rotating turning plate 5 can make each part of the tea flower pile continuously change its position, enabling the tea flowers to fully contact with the cold air, thus ensuring the process of pre-freezing the tea flowers and improving the production quality of the tea flower freeze-dried powder.

[0056] The above are only the preferred specific embodiments of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and its improved concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A freeze-dried tea tree flower extraction device, comprising an extraction cylinder (1), characterized in that: A driving motor (2) is fixedly installed at the top of the outer surface of the extraction cylinder (1). The output end of the driving motor (2) penetrates through the extraction cylinder (1) and is fixedly connected to a stirring rod (3). A freeze-drying chamber (4) is provided inside the extraction cylinder (1), and the stirring rod (3) is located inside the freeze-drying chamber (4). A stirring plate (5) is fixedly sleeved at the bottom of the stirring rod (3). The stirring plate (5) is designed in a spiral shape and has three-quarters of a turn. A sleeve (6) is rotatably installed at the top end of the inner wall of the freeze-drying chamber (4). The opening of the sleeve (6) faces downward. A fan (7) fixedly sleeved on the outer surface of the stirring rod (3) is arranged inside the sleeve (6). A condensing pipe (8) is fixedly arranged at the top end of the inner wall of the freeze-drying chamber (4). The condensing pipe (8) is located above the fan (7). The blowing direction of the fan (7) is from top to bottom. The stirring rod (3) is used to guide the air inside the sleeve (6) into the freeze-drying chamber (4). A plurality of groups of first air inlet holes (9) are provided on the sleeve (6), and each group of the first air inlet holes (9) is located above the fan (7).

2. The tea tree flower freeze-dried powder extraction device according to claim 1, wherein: A feeding port (10) is fixedly arranged at the top end of the extraction cylinder (1). The switch of the feeding port (10) can seal the feeding port (10). A manually controlled valve (11) is fixedly arranged at the bottom of the freeze-drying chamber (4). A disc (12) is rotatably and sealingly arranged at the bottom of the sleeve (6). Both ends of the disc (12) are fixedly connected to the inner wall of the freeze-drying chamber (4). The disc (12) is used to close the opening at the bottom of the sleeve (6). The stirring rod (3) is designed with a hollow interior. A plurality of groups of second air inlet holes (13) are fixedly arranged in the middle of the stirring rod (3). Each group of the second air inlet holes (13) is located below the fan (7). Each group of the second air inlet holes (13) is used to send gas into the interior of the stirring rod (3). A plurality of groups of air outlet holes (14) are provided at the bottom of the stirring rod (3). Each group of the air outlet holes (14) is used to guide the gas inside the stirring rod (3) into the freeze-drying chamber (4).

3. The tea tree flower freeze-dried powder extraction device according to claim 2, characterized in that: A screw fan blade (15) is fixedly sleeved on the outer surface of the sleeve (6). The outer ring of the screw fan blade (15) is in contact with the inner wall of the freeze-drying chamber (4). A transmission member (16) for rotating the sleeve (6) is arranged inside the sleeve (6).

4. The tea tree flower freeze-dried powder extraction device according to claim 3, wherein: The transmission member (16) includes a toothed ring (17) fixedly arranged at the bottom inner surface of the sleeve (6). The toothed ring (17) is arranged in a ring shape. A first gear (18) is also fixedly sleeved on the outer surface of the stirring rod (3). Two groups of second gears (19) are symmetrically arranged on the disc (12). The two groups of the second gears (19) are respectively meshed with the first gear (18). The second gears (19) are respectively meshed with the toothed ring (17). The number of teeth of the first gear (18) is less than the number of teeth of the toothed ring (17).

5. The tea tree flower freeze-dried powder extraction device according to claim 4, wherein: A plurality of groups of first communication holes (20) are provided on the screw fan blade (15). Each group of the first communication holes (20) is used in cooperation with the first air inlet holes (9). Each group of the first communication holes (20) is used to guide the gas inside the freeze-drying chamber (4) into the interior of the sleeve (6).

6. The tea tree flower freeze-dried powder extraction device according to claim 5, wherein: A plurality of groups of second communication holes (21) are formed in the stirring plate (5). An air cavity (22) is left between the stirring plate (5) and the bottom of the freeze-drying cavity (4). The air cavity (22) is communicated with the second communication holes (21). The upper parts of the plurality of groups of air outlet holes (14) are used for the gas flow inside the stirring rod (3) and inside the freeze-drying cavity (4). The lower parts of the plurality of groups of air outlet holes (14) are used for the gas flow inside the stirring rod (3) and inside the air cavity (22).

7. An extraction device for freeze-dried tea tree flower powder according to claim 6, characterized in that: A sealing plate (23) is fixedly arranged at the bottom of the highest horizontal position of the stirring plate (5). The sealing plate (23) is used for separating the air cavity (22) and the freeze-drying cavity (4).

8. A tea tree flower freeze-dried powder extraction device according to claim 7, characterized in that: A reciprocating thread groove (24) is formed on the outer surface of the stirring rod (3). The reciprocating thread groove (24) is located above the fan (7). A ring sleeve (25) is rotatably sleeved on the outer surface of the stirring rod (3). The ring sleeve (25) is adapted to the reciprocating thread groove (24). A sliding ring (26) is slidably sleeved on the outer surface of the condensing pipe (8). Annular sponges (27) are fixedly connected to both the upper and lower ends of the sliding ring (26). The two groups of annular sponges (27) are slidably sleeved on the outer surface of the condensing pipe (8). A guiding slider (28) is fixedly arranged at the position where the sliding ring (26) contacts the inner wall of the sleeve (6). A guiding chute (29) is formed on the inner wall of the sleeve (6). The guiding chute (29) is used for the up and down sliding of the guiding slider (28). The ring sleeve (25) is fixedly connected to the sliding ring (26).

9. The tea tree flower freeze-dried powder extraction device according to claim 8, characterized in that: Protrusions (30) with the same inner and outer dimensions as those of the annular sponge are arranged at both the upper and lower ends of the sliding ring (26). The protrusions (30) are used for squeezing the annular sponge. A water squeezing block (31) is fixedly arranged through the top of the extraction cylinder (1). The water squeezing block (31) is fixedly and sealingly sleeved on the outer surface of the condensing pipe (8). The top of the condensing pipe (8) extends to the outer surface of the extraction cylinder (1). A water squeezing cavity (32) is formed inside the water squeezing block (31). The size of the water squeezing cavity (32) is the same as that of the annular sponge. A plurality of groups of hoses (33) are arranged on the water squeezing block (31). The hoses (33) are used for discharging the water generated by squeezing the annular sponge to the outside of the extraction cylinder (1).

10. The tea tree flower freeze-dried powder extraction device according to claim 9, wherein: A ring plate (34) is rotatably arranged at the top of the extraction cylinder (1). The water squeezing block (31), the condensing pipe (8) and the upward extending parts of the hoses (33) are all arranged on the ring plate (34).

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