Crystallization precipitation tank for tea pigment production

Abstract

The utility model discloses a crystal precipitation tank for tea pigment production. The crystal precipitation tank comprises a tank body; the liquid inlet is formed in the bottom of the tank body; the discharge hole is formed in the bottom of the tank body; the liquid taking pipe is rotatably arranged on the tank body; the window is arranged at the top of the tank body; and the window lamp is arranged at the top of the tank body. Concentrated tea pigment paste and absolute ethyl alcohol are discharged into the tank body along with the liquid inlet, after sufficient standing and precipitation, the window lamp is turned on, the liquid level condition of supernate in the tank body is observed through the window, the liquid taking pipe is rotated, the liquid taking opening of the liquid taking pipe is located above the boundary line of the supernate and precipitate, the supernate is pumped out through the suction pump, and the supernate is taken out. And repeatedly adding absolute ethyl alcohol to carry out precipitation for multiple times so as to fully remove impurities in the tea pigment paste. During each time of precipitation, supernate can be effectively extracted by rotating the liquid extraction pipe, tea pigment crystals are reserved, and the tea pigment crystals are discharged from the discharge port.

Description

Technical Field

[0001] This application relates to the field of tea pigment production, and in particular to a crystallization and precipitation tank for tea pigment production. Background Technology

[0002] Tea pigments are a class of plant phenolic pigments, mainly composed of catechins, formed through enzymatic or non-enzymatic oxidation of tea polyphenols. Ethanol precipitation is a method that separates tea polyphenols from other impurities by utilizing the difference in solubility in solvents such as water and ethanol.

[0003] Because other impurities do not settle completely in a single sedimentation, multiple sedimentation operations are required. These multiple sedimentation operations lead to unstable supernatant levels, making it difficult for existing tea pigment crystallization and precipitation equipment to effectively extract the supernatant.

[0004] Therefore, it is necessary to propose a crystallization and precipitation tank for tea pigment production, which can effectively extract the supernatant produced during the crystallization and precipitation process. This has become an important technical problem that urgently needs to be solved. Utility Model Content

[0005] This application provides a crystallization and precipitation tank for tea pigment production, aiming to solve the problem in existing technologies where tea polyphenols are not completely precipitated in a single step, requiring multiple precipitation operations. These multiple precipitation operations lead to unstable supernatant levels, making it difficult for existing tea pigment crystallization and precipitation equipment to effectively extract the supernatant.

[0006] To achieve the above objectives, this application proposes a crystallization precipitation tank for tea pigment production, comprising: a tank body; a liquid inlet located at the bottom of the tank body; a discharge outlet located at the bottom of the tank body; a liquid collection pipe rotatably disposed on the tank body; a viewing window located at the top of the tank body; and a viewing window light located at the top of the tank body.

[0007] In some embodiments, the device further includes: a first mounting box, which is mounted on the tank body, and a liquid extraction tube is rotatably mounted on the first mounting box and extends out of the first mounting box; a mounting cylinder, which is provided in the first mounting box and extends into the tank body; a first seal, which is provided between the mounting cylinder and the liquid extraction tube; a second mounting box, which is located on the side of the first mounting box away from the tank body, and the liquid extraction tube extends into the second mounting box; a second seal, which is provided between the second mounting box and the liquid extraction tube; and a suction port, which is located at one end of the second mounting box and communicates with the liquid extraction tube.

[0008] In some embodiments, the device further includes: a drive worm gear rotatably disposed in the second mounting box; and a worm wheel disposed on the outer peripheral surface of the liquid collection tube and located inside the second mounting box, the worm wheel being engaged with the drive worm gear.

[0009] In some embodiments, the device further includes: a handwheel, wherein a handwheel is provided at the end of the drive worm gear away from the second mounting box; and a support frame, wherein the support frame is disposed on the tank body and the drive worm gear is rotatably connected to the support frame.

[0010] In some embodiments, the device further includes: a stirring drive disposed at the top of the tank; and a stirring blade disposed inside the tank, wherein the stirring drive drives the stirring blade to rotate.

[0011] In some embodiments, the device further includes a cleaning port located at the top of the tank.

[0012] This application proposes a crystallization and precipitation tank for tea pigment production, comprising: a tank body; a liquid inlet located at the bottom of the tank body; a discharge outlet located at the bottom of the tank body; a liquid sampling pipe rotatably mounted on the tank body; a viewing window located at the top of the tank body; and a viewing light located at the top of the tank body. Concentrated tea pigment paste and anhydrous ethanol are discharged into the tank body through the liquid inlet. Due to the difference in solubility between tea polyphenols and other impurities in solvents such as water and ethanol, tea polyphenol crystals will form inside the tank. After sufficient settling, the viewing light is turned on, and the liquid level of the supernatant in the tank is observed through the viewing window. The liquid sampling pipe is rotated so that its sampling port is above the boundary between the supernatant and the precipitate. The supernatant is then extracted using a suction pump, and anhydrous ethanol is repeatedly added for multiple precipitation cycles to thoroughly remove impurities from the tea pigment paste. Through the above steps, impurities in the tea pigment paste can be effectively removed through multiple sedimentation processes, forming a high-purity primary product of tea pigment. During each sedimentation, the supernatant can be effectively extracted and the tea pigment crystals can be retained by rotating the liquid extraction tube. The tea pigment crystals are discharged from the outlet. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0014] Figure 1 This is a cross-sectional view of a crystallization and precipitation tank for producing tea pigments according to one embodiment of this application;

[0015] Figure 2 This is a magnified view of part A in section 1;

[0016] Figure 3 This is a left view of a crystallization and precipitation tank for producing tea pigments according to one embodiment of this application;

[0017] Figure 4 This is a top view of a crystallization and precipitation tank for producing tea pigments according to one embodiment of this application.

[0018] In the diagram: 1. Upper end cap; 2. Inner cylinder; 3. Lower cone; 4. Ear seat; 5. Stirring shaft; 6. Plate level gauge; 7. Liquid sampling pipe; 8. Stirring drive; 9. Liquid inlet; 10. Cleaning port; 11. Sampling port; 12. Temperature probe; 13. Support frame; 14. Handwheel; 15. Viewing window; 16. Bearing; 17. Second mounting box; 18. Second seal; 19. Suction port; 20. First seal; 21. Mounting cylinder; 22. First mounting box; 23. Drive worm gear; 24. Viewing window light. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0020] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0021] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0022] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0023] See Figure 1As shown, this application proposes a crystallization precipitation tank for tea pigment production, comprising: a tank body; a liquid inlet 9, the liquid inlet 9 being disposed at the bottom of the tank body; a discharge outlet, the discharge outlet being disposed at the bottom of the tank body; a liquid collection pipe 7, the liquid collection pipe 7 being rotatably disposed on the tank body; a viewing window 15, the viewing window 15 being disposed at the top of the tank body; and a viewing window light 24, the viewing window light 24 being disposed at the top of the tank body.

[0024] The tank body includes an upper head 1, an inner cylinder 2, and a lower cone 3, all integrally formed. The liquid inlet 9 is located on the upper head 1, and the discharge outlet is located on the lower cone 3. A viewing window 15 and a viewing light 24 are both located on the upper head 1. A liquid extraction pipe 7 is rotatably mounted on the inner cylinder 2. As the pipe rotates relative to the inner cylinder, the height of its extraction port changes accordingly. The viewing window 15 facilitates observation of the liquid level inside the tank and the height of the extraction port on the pipe 7.

[0025] Specifically, the concentrated tea pigment paste and anhydrous ethanol are discharged into the tank through inlet 9. Due to the difference in solubility between tea polyphenols and other impurities in solvents such as water and ethanol, tea polyphenol crystals will form inside the tank. After sufficient settling, the viewing window 24 is turned on, and the liquid level of the supernatant in the tank is observed through viewing window 15. The sampling tube 7 is rotated so that the sampling port of the sampling tube 7 is above the boundary between the supernatant and the sediment. The supernatant is then extracted by a suction pump, and anhydrous ethanol is added repeatedly for multiple precipitations to thoroughly remove impurities from the tea pigment paste. Through the above steps, impurities in the tea pigment paste can be effectively removed through multiple precipitations to form a high-purity primary tea pigment product. During each precipitation, the supernatant can be effectively extracted by rotating the sampling tube 7 while retaining the tea pigment crystals, which are discharged from the outlet.

[0026] The tank body and liquid extraction pipe 7 are both made of SUS304 stainless steel. SUS304 stainless steel has good mechanical properties and corrosion resistance, which enables a crystallization precipitation tank for tea pigment production to adapt to diverse and harsh operating environments.

[0027] See Figure 1 and Figure 2As shown, in some embodiments, the system further includes: a first mounting box 22, which is mounted on the tank body, and the liquid extraction tube 7 is rotatably mounted on the first mounting box 22, with the liquid extraction tube 7 extending out of the first mounting box 22; a mounting cylinder 21, which is provided in the first mounting box 22 and extends into the tank body, and is used to rotatably mount the liquid extraction tube 7 onto the inner cylinder 2 of the tank body; a first sealing element 20, which is provided between the mounting cylinder 21 and the liquid extraction tube 7, and is used to ensure a seal between the liquid extraction tube 7 and the tank body to prevent ethanol leakage; a second mounting box 17, which is located on the side of the first mounting box 22 away from the tank body, and the liquid extraction tube 7 extends into the second mounting box 17; a second sealing element 18, which is provided between the second mounting box 17 and the liquid extraction tube 7; and a suction port 19, which is located at one end of the second mounting box 17 and is connected to the liquid extraction tube 7. The suction port 19 is connected to a suction pump. The second mounting box 17 includes a cylinder and end plates at both ends. One end plate is connected to the first mounting box 22 by fasteners. A second seal 18 is provided between the other end plate and the liquid extraction pipe 7, and the other end plate is connected to the suction port 19. The first seal 20 and the second seal 18 include O-rings or other types of seals. The second mounting box 17 is used to realize the connection between the liquid extraction pipe 7 and the suction pump.

[0028] See Figure 1 and Figure 2 As shown, in some embodiments, the system further includes: a drive worm gear 23, rotatably mounted in the second mounting box 17, with a bearing 16 disposed between the drive worm gear 23 and the second mounting box 17; and a worm wheel, disposed on the outer circumferential surface of the liquid collection tube 7 and located inside the second mounting box 17, the worm wheel meshing with the drive worm gear 23. Rotating the drive worm gear 23 drives the worm wheel to rotate, thereby causing the liquid collection tube 7 to rotate.

[0029] In this embodiment, other transmission structures, such as helical gear transmission, can also be used. No specific limitation is made here, as long as they can drive the liquid collection tube 7 to rotate. Preferably, a transmission structure using a driving worm 23 and a worm wheel is adopted. The driving worm 23 and worm wheel have self-locking properties, which helps maintain the position of the liquid collection port of the liquid collection tube 7.

[0030] The inner cylinder 2 of the tank is equipped with a plate-type level gauge 6, which displays the liquid level inside the tank and determines the amount of anhydrous ethanol added. A temperature probe 12 is also installed on the inner cylinder 2 to measure the temperature of the tank. Since ethanol precipitation requires low temperatures, the temperature probe 12 facilitates temperature monitoring by personnel. Lugs 4 are spaced apart on the outer circumference of the inner cylinder 2, allowing the tank to be mounted onto a steel frame. A sampling port 11 is located on the upper part of the inner cylinder 2, used to collect a portion of the liquid from the tank for analysis of the drug's condition.

[0031] See Figure 1 , Figure 3 and Figure 4 As shown, in some embodiments, the system further includes: a handwheel 14, with the end of the drive worm gear 23 away from the second mounting box 17 having a handwheel 14; and a support frame 13, which is mounted on the tank body and rotatably connected to the drive worm gear 23. Since the rotation of the liquid extraction tube 7 requires overcoming friction and gravity, the rotation resistance of the liquid extraction tube 7 is relatively large. The handwheel 14 effectively reduces the difficulty of rotating the liquid extraction tube 7. Because the drive worm gear 23 is relatively long, a support frame 13 is provided to improve its stability. One end of the support frame 13 is welded to the inner cylinder 2 of the tank body, and the other end of the support frame 13 is provided with a through hole for the worm gear to pass through.

[0032] See Figure 1 and Figure 4 As shown, in some embodiments, the system further includes: a stirring drive 8, which is located at the top of the tank body and at the top of the upper end cap 1 of the tank body. The stirring drive 8 is a motor with an output end, which is connected to a stirring shaft 5 via a coupling. The stirring shaft 5 extends into the tank body. A stirring blade is also included, located inside the tank body. The stirring drive 8 drives the stirring blade to rotate. The stirring blades are spaced apart on the stirring shaft 5. The stirring drive 8 drives the stirring shaft 5 to rotate, thereby driving the stirring blades to rotate. The stirring action of the blades helps to increase the actual contact area between the tea pigment paste and ethanol, thus improving the uniformity of the tea pigment paste and ethanol.

[0033] See Figure 1 and Figure 4 As shown, in some embodiments, it further includes a cleaning port 10, which is located at the top of the tank. A spray head is provided below the cleaning port 10, so that the tank can be quickly cleaned through the cleaning port 10 and the spray head after crystallization.

[0034] The above description is only a part or preferred embodiment of this application. Neither the text nor the drawings should limit the scope of protection of this application. All equivalent structural transformations made using the content of this application's specification and drawings under the overall concept of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.

Claims

1. A crystallization and precipitation tank for tea pigment production, characterized in that, include: Tank body; Liquid inlet (9) is located at the bottom of the tank body; The discharge port is located at the bottom of the tank. Liquid collection tube (7), which is rotatably mounted on the tank body; A viewing window (15) is disposed on the top of the tank body; A viewing window light (24) is provided on the top of the tank.

2. The crystallization and precipitation tank for tea pigment production according to claim 1, characterized in that, Also includes: The first mounting box (22) is mounted on the tank body, the liquid extraction tube (7) is rotatably mounted on the first mounting box (22), and the liquid extraction tube (7) extends out of the first mounting box (22). The first mounting box (22) is provided with a mounting cylinder (21), which extends into the tank body; A first sealing element (20) is provided between the mounting cylinder (21) and the liquid extraction tube (7). The second mounting box (17) is located on the side of the first mounting box (22) away from the tank body, and the liquid extraction tube (7) extends into the second mounting box (17); The second sealing element (18) is provided between the liquid extraction tube (7) and the second mounting box (17). A suction port (19) is provided at one end of the second mounting box (17), and the suction port (19) is connected to the liquid collection tube (7).

3. The crystallization and precipitation tank for tea pigment production according to claim 2, characterized in that, Also includes: A drive worm (23) is rotatably mounted in the second mounting box (17). The worm gear is disposed on the outer circumferential surface of the liquid collection tube (7) and located in the second mounting box (17). The worm gear is meshed with the drive worm (23).

4. A crystallization and precipitation tank for tea pigment production according to claim 3, characterized in that, Also includes: Handwheel (14) is provided at the end of the drive worm gear (23) away from the second mounting box (17). A support frame (13) is provided on the tank body, and the drive worm gear (23) is rotatably connected to the support frame (13).

5. A crystallization and precipitation tank for tea pigment production according to claim 1, characterized in that, Also includes: A stirring drive (8) is provided at the top of the tank; A stirring blade is disposed inside the tank, and the stirring drive (8) drives the stirring blade to rotate.

6. A crystallization and precipitation tank for tea pigment production according to claim 1, characterized in that, Also includes: A cleaning port (10) is provided at the top of the tank.

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