Astaxanthin extraction device

Abstract

The present invention relates to the field of extraction devices, and specifically to an astaxanthin extraction device. An extraction tank is provided with a central shaft driven by a power device and rotating around its own axis. A sleeve is vertically slidably installed on the central shaft, a fixed sleeve is fixedly installed on the sleeve, and a sliding sleeve is also vertically slidably installed on the sleeve located above the fixed sleeve. A stirring blade is fixedly installed on both the fixed sleeve and the sliding sleeve. A movable column is also radially slidably installed on the fixed sleeve along the extraction tank, a scraper matching the inner wall of the extraction tank is fixedly installed on one end of the movable column, and a support rod is hinged between the sliding sleeve and the movable column. While the fixed sleeve and the sliding sleeve rotate to stir the material, the cantilever drives the sleeve, the fixed sleeve and the sliding sleeve to move back and forth up and down along the central shaft through the hollow tube, thereby driving the stirring blade to evenly stir the material at different depths in the extraction tank.

Description

Technical Field

[0001] The present invention relates to the field of extraction devices, in particular to an astaxanthin extraction device. Background Art

[0002] Haematococcus pluvialis contains a high content of astaxanthin and is the best biological source of astaxanthin. When extracting astaxanthin from Haematococcus pluvialis, the algae are usually first mechanically broken and then extracted with a solvent.

[0003] In the prior art, the invention patent with application number CN202110199660.7 discloses a comprehensive astaxanthin wall breaking and extraction device for Haematococcus pluvialis, including a bottom plate, a bead mill for physical wall breaking, a reaction part for solid-liquid mixing reaction, a conveyor belt for transporting centrifuge tubes, a centrifuge, and an assembly part for adding a cover to the centrifuge tube and moving the centrifuge tube into the centrifuge; the entire equipment is integrated and flexible, and comprehensively performs wall breaking and extraction operations on Haematococcus pluvialis, greatly improving the efficiency of astaxanthin wall breaking and extraction, and improving the convenience of operation.

[0004] The reaction part of the extraction device includes a reaction barrel, a rotating shaft is installed in the center of the barrel cover, a turntable is provided at the lower end of the rotating shaft, and a plurality of stirring rods are provided at the bottom of the turntable. The turntable and stirring rods are driven by a stirring motor to rotate for stirring, thereby accelerating the reaction rate.

[0005] However, the above-mentioned extraction device has a single stirring method and cannot efficiently mix the broken Haematococcus pluvialis with the extraction solvent. Moreover, the above-mentioned extraction device does not have a structure for cleaning the inner wall of the reaction barrel. After the extraction is completed, some materials will adhere to the inner wall of the reaction barrel and are difficult to discharge, resulting in waste of raw materials. Summary of the Invention

[0006] The object of the present invention is to provide an astaxanthin extraction device that can efficiently stir the material and scrape off the material attached to the inner wall of the extraction tank, so as to solve the defects mentioned in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] An astaxanthin extraction device comprises a cylindrical extraction tank, wherein a central shaft driven by a power device and rotating around its own axis is provided in the extraction tank, the central shaft is coaxially arranged with the extraction tank, a sleeve located in the extraction tank is vertically slidably mounted on the central shaft, a fixed sleeve is fixedly mounted on the sleeve, a sliding sleeve is also vertically slidably mounted on the sleeve located above the fixed sleeve, and stirring blades are fixedly mounted on both the fixed sleeve and the sliding sleeve; a movable column is also radially slidably mounted on the fixed sleeve along the extraction tank, a scraper matching the inner wall of the extraction tank is fixedly mounted on one end of the movable column, and a support rod is hinged between the sliding sleeve and the movable column; the upper end of the sleeve is rotatably mounted on a first mounting plate, and the upper end of the sliding sleeve is rotatably mounted on a second mounting plate, the first mounting plate is driven vertically to move by a lifting mechanism, and the second mounting plate is driven up and down relative to the first mounting plate by a telescopic component.

[0009] As a further improvement, a vertically extending hollow tube is fixedly mounted on the first mounting plate, and a guide hole for the hollow tube to pass through is provided on the top wall of the extraction tank; a vertically extending optical axis is fixedly mounted on the second mounting plate, and the optical axis is vertically slidably mounted in the hollow tube.

[0010] As a further improvement, the lifting mechanism includes a stand located on one side of the extraction tank, the stand is provided with a slide driven vertically by a screw mechanism, a cantilever is fixedly mounted on the slide, and the upper end of the hollow tube is fixedly mounted on the cantilever.

[0011] As a further improvement, the upper end of the optical axis passes through the outside of the hollow tube and is fixedly installed with a mounting seat. The telescopic component is an electric push rod fixedly installed on the mounting seat. The output end of the electric push rod extends downward and is fixedly installed on the cantilever.

[0012] As a further improvement, the scraper is in a spiral shape that matches the inner wall of the extraction tank.

[0013] As a further improvement, a feeding port is provided at the top of the extraction tank; a cylindrical discharge pipe extending downward is provided at the bottom of the extraction tank, a sealing plate is detachably installed at the lower end of the discharge pipe, a filter screen is provided in the discharge pipe, which is driven by a motor and rotates around a diameter of the discharge pipe, the filter screen is circular and the area of ​​the filter screen is consistent with the cross-sectional area of ​​the inner cavity of the discharge pipe; a discharge port is provided on the discharge pipe below the filter screen, and a valve is installed on the discharge port.

[0014] As a further improvement, the bottom wall of the inner cavity of the extraction tank is provided with a conical surface which is higher in the middle and lower at the edges, and the upper end of the discharge pipe is connected to one side edge of the conical surface.

[0015] As a further improvement, a scraper rod matching the conical surface is fixedly mounted on the fixed sleeve.

[0016] As a further improvement, a vertically extending liquid extraction pipe is provided on one side of the extraction tank, and the upper and lower ends of the liquid extraction pipe are closed. A liquid inlet pipe is connected between the lower end of the liquid extraction pipe and the extraction tank, and a liquid outlet pipe is connected between the upper end of the liquid extraction pipe and the extraction tank. A piston is vertically movably installed in the liquid extraction pipe, and a one-way valve assembly that conducts from bottom to top is installed on the piston. An upward extending pulling rod is fixedly installed on the piston, and a through hole for the pulling rod to pass through is provided on the top of the liquid extraction pipe, and the upper end of the pulling rod is fixedly installed on the cantilever.

[0017] As a further improvement, the end of the liquid inlet pipe connected to the extraction tank is tilted downward; the end of the liquid outlet pipe connected to the extraction tank is tilted downward.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. While the fixed sleeve and the sliding sleeve rotate to stir the material, the cantilever drives the sleeve, the fixed sleeve and the sliding sleeve to move up and down along the central axis through the hollow tube, thereby driving the stirring blades to evenly stir the materials at different depths in the extraction tank, achieving better stirring effect and more complete mixing of the broken Haematococcus pluvialis and the extraction solvent;

[0020] 2. When the material is stirred by the stirring blade, the sliding sleeve is driven by the electric push rod to move upward along the sleeve, and the sliding sleeve drives the scraper to separate from the inner wall of the extraction tank through the support rod, so as to avoid the scraper from continuously rubbing against the inner wall of the extraction tank and causing excessive wear of the scraper or the extraction tank; after the material in the extraction tank is discharged, the sliding sleeve is driven by the electric push rod to move downward along the sleeve, and the sliding sleeve drives the scraper to fit on the inner wall of the extraction tank through the support rod. The spiral scraper scrapes off the material attached to the inner wall of the extraction tank and pushes the material to the bottom of the extraction tank. The material in the extraction tank is discharged more cleanly to avoid waste;

[0021] 3. When the extract in the extraction tank is discharged through the discharge port, it is filtered through a horizontal filter screen, and the fixed material stays on the top of the filter screen, which makes it more convenient for subsequent treatment of the extract. It also makes it easier to perform multiple extraction operations on the Haematococcus pluvialis raw material, thereby improving economic benefits.

[0022] 4. When the cantilever moves up and down, the piston is driven by the pull rod to move up and down. Driven by the piston, the material located deep in the extraction tank enters the liquid extraction pipe below the piston through the liquid inlet pipe. At the same time, the material in the liquid extraction pipe above the piston flows back to the upper liquid surface of the extraction tank through the liquid outlet pipe, thereby promoting the up and down flow of the material in the extraction tank and further improving the uniformity of the distribution of Haematococcus pluvialis in the extraction solvent. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 It is a structural diagram of embodiment 1 of the present invention;

[0025] Figure 2 yes Figure 1 A schematic cross-sectional view of the extraction tank;

[0026] Figure 3 1 is a schematic structural diagram of a sleeve according to a first embodiment of the present invention;

[0027] Figure 4 1 is an exploded schematic diagram of the casing according to the first embodiment of the present invention;

[0028] Figure 5 1 is a schematic structural diagram of a discharge pipe according to a first embodiment of the present invention;

[0029] Figure 6 is a structural diagram of embodiment 2 of the present invention;

[0030] Figure 7 1 is a schematic structural diagram of a liquid extraction tube according to a second embodiment of the present invention;

[0031] Figure 8 1 is a schematic structural diagram of a piston according to a second embodiment of the present invention;

[0032] Figure 9 It is a structural schematic diagram of the leather cup of the second embodiment of the present invention.

[0033] In the figure: 1-base plate; 2-extraction tank; 3-central axis; 4-stirring motor; 5-casing; 6-first chute; 7-first slider; 8-fixed sleeve; 9-sliding sleeve; 10-second chute; 11-second slider; 12-outer tube; 13-movable column; 14-scraper; 15-support rod; 16-first mounting plate; 17-second mounting plate; 18-hollow tube; 19-optical axis; 20-stand; 21-slide; 22-sliding slot; 23-lifting motor; 24-screw ;25-cantilever;26-mounting seat;27-electric push rod;28-feeding port;29-discharge pipe;30-sealing plate;31-motor;32-filter screen;33-rotating shaft;34-discharge port;35-conical surface;36-scraper;37-liquid extraction pipe;38-sealing cover;39-liquid inlet pipe;40-liquid outlet pipe;41-piston;42-pull rod;43-positioning hole;44-liquid hole;45-positioning column;46-leather cup;47-stop head;48-stirring blade. DETAILED DESCRIPTION

[0034] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0035] Example 1:

[0036] like Figures 1 to 5 As shown, an astaxanthin extraction device includes a base plate 1, with a cylindrical extraction tank 2 disposed above the base plate 1. The extraction tank 2 is fixedly connected to the base plate 1 via support legs. A central shaft 3 driven by a power unit and rotating about its own axis is disposed within the extraction tank 2. The central shaft 3 is coaxially disposed with the extraction tank 2, and the upper and lower ends of the central shaft 3 are rotatably connected to the top and bottom walls of the extraction tank 2, respectively, via bearings. The power unit is a stirring motor 4 mounted on the base plate 1 via bolts. The lower end of the central shaft 3 extends to the outside of the extraction tank 2 and is fixedly connected to the rotating shaft of the stirring motor 4 via a coupling.

[0037] like Figure 2As shown, a sleeve 5 located in the extraction tank 2 is vertically slidably installed on the central shaft 3, and a first slide groove 6 extending vertically is provided on the outer wall of the central shaft 3 located in the extraction tank 2. A first slider 7 matching the first slide groove 6 is integrally formed on the inner wall of the sleeve 5 to prevent the sleeve 5 from rotating relative to the central shaft 3; a fixed sleeve 8 is fixedly installed on the outer side of the lower end of the sleeve 5 by bolts, and a sliding sleeve 9 is also vertically slidably installed on the sleeve 5 above the fixed sleeve 8, and a second slide groove 10 extending vertically is provided on the outer wall of the sleeve 5, and a second slider 11 matching the second slide groove 10 is integrally formed on the inner wall of the sliding sleeve 9 to prevent the sliding sleeve 9 from rotating relative to the sleeve 5; a plurality of stirring blades 48 uniformly distributed circumferentially are welded on the outer circumferential surface of the fixed sleeve 8 and the outer circumferential surface of the sliding sleeve 9. The central shaft 3 is driven to rotate by the stirring motor 4, and the central shaft 3 drives the fixed sleeve 8 and the sliding sleeve 9 to rotate through the sleeve 5. The stirring blades 48 on the fixed sleeve 8 and the sliding sleeve 9 stir the material in the extraction tank 2, so that the broken Haematococcus pluvialis and the extraction solvent are efficiently mixed.

[0038] like Figure 3 As shown, outer tubes 12 extending radially along the extraction tank 2 are welded to opposite sides of the fixed sleeve 8. A movable post 13 is slidably inserted into each outer tube 12. A scraper 14, designed to mate with the inner wall of the extraction tank 2, is welded to the end of the movable post 13 away from the central axis 3. To improve scraping efficiency, the scraper 14 is spirally shaped and conforms to the inner wall of the extraction tank 2. First hinged seats are provided on opposite sides of the lower end of the sliding sleeve 9. Second hinged seats are provided at the tops of the two movable posts 13. Support rods 15 are hingedly connected between the first and second hinged seats. When the sliding sleeve 9 is slid upward along the sleeve 5, the support rods 15 drive the movable posts 13 toward the central axis 3, freeing the scrapers 14 from the inner wall of the extraction tank 2. When the sliding sleeve 9 is slid downward along the sleeve 5, the support rods 15 drive the movable posts 13 away from the central axis 3, allowing the scrapers 14 to adhere to the inner wall of the extraction tank 2.

[0039] The upper end of the sleeve 5 is rotatably mounted on the first mounting plate 16 through a bearing, and the upper end of the sliding sleeve 9 is rotatably mounted on the second mounting plate 17 through a bearing. The second mounting plate 17 is located below the first mounting plate 16; the first mounting plate 16 is driven vertically by the lifting mechanism, and the second mounting plate 17 is driven up and down relative to the first mounting plate 16 by the telescopic component.

[0040] In this embodiment, a vertically extending hollow tube 18 is fixedly installed on the first mounting plate 16 by bolts. Two hollow tubes 18 are symmetrically provided with respect to the central axis 3. A guide hole for the hollow tube 18 to pass through is provided on the top wall of the extraction tank 2. A sealing member is provided between the inner wall of the guide hole and the hollow tube 18. The sealing member can be a sealing rubber ring to prevent the material in the extraction tank 2 from overflowing through the guide hole and the hollow tube 18; a vertically extending optical axis 19 is fixedly installed on the second mounting plate 17 by bolts. Two optical axes 19 are also symmetrically provided with respect to the central axis 3. The optical axes 19 are vertically slidably installed in the corresponding hollow tubes 18.

[0041] like Figure 1 As shown, the lifting mechanism includes a stand 20 located on one side of the extraction tank 2. The stand 20 is equipped with a slide 21 that is driven vertically by a screw mechanism. Specifically, a vertically extending sliding slot 22 is provided within the stand 20, and the slide 21 is slidably mounted within the sliding slot 22. The screw mechanism includes a lifting motor 23 bolted to the top of the stand 20. The rotating shaft of the lifting motor 23 extends downward into the sliding slot 22 and is fixedly mounted with a vertically extending screw 24 via a coupling. The lower end of the screw 24 is rotatably connected to the bottom wall of the sliding slot 22 via a bearing. The slide 21 is screwed onto the screw 24, and the rotation of the screw 24 drives the slide 21 up and down. A transversely extending cantilever 25 is bolted to one side of the slide 21, and the upper end of the hollow tube 18 is bolted to the cantilever 25.

[0042] While the fixed sleeve 8 and the sliding sleeve 9 rotate to stir the material, the lifting motor 23 drives the screw rod 24 to rotate periodically in a forward and reverse alternating manner, and then the screw rod 24 drives the slide 21 and the cantilever 25 to move back and forth up and down. The cantilever 25 drives the sleeve 5, the fixed sleeve 8 and the sliding sleeve 9 to move back and forth along the central axis 3 through the hollow tube 18, thereby driving the stirring blades 48 to evenly stir the materials at different depths in the extraction tank 2, thereby achieving better stirring effect and more complete mixing of the broken Haematococcus pluvialis and the extraction solvent.

[0043] like Figure 2As shown, the upper end of the optical axis 19 passes through the outside of the hollow tube 18, and the upper ends of the two optical axes 19 are fixed with a mounting seat 26 by bolts. The telescopic component is an electric push rod 27 fixedly installed on the top of the mounting seat 26 by bolts. The output end of the electric push rod 27 extends downward and is fixedly installed on the cantilever 25 by bolts. When the material in the extraction tank 2 is stirred by the stirring blade 48, the electric push rod 27 extends and drives the second mounting plate 17 upward to approach the first mounting plate 16 through the optical axis 19, and then the second mounting plate 17 drives the sliding sleeve 9 to move upward along the sleeve 5. The sliding sleeve 9 drives the movable column 13 to approach the central axis 3 through the support rod 15, so that the scraper 14 is separated from the inner wall of the extraction tank 2, so as to avoid the scraper 14 from continuously rubbing against the inner wall of the extraction tank 2 during the stirring process, causing excessive wear of the scraper 14 or the extraction tank 2; after the material in the extraction tank 2 is discharged, the electric push rod 27 is retracted and the electric push rod 27 is retracted. The second mounting plate 17 is driven downward away from the first mounting plate 16 through the optical axis 19, and then the second mounting plate 17 drives the sliding sleeve 9 to move downward along the sleeve 5. The sliding sleeve 9 drives the movable column 13 away from the central axis 3 through the support rod 15, so that the scraper 14 is attached to the inner wall of the extraction tank 2. The sleeve 5, the fixed sleeve 8 and the scraper 14 are driven to rotate through the central axis 3, and the sleeve 5, the fixed sleeve 8 and the scraper 14 are driven to move downward along the central axis through the cantilever 25, and then the spiral scraper 14 scrapes off the material attached to the inner wall of the extraction tank 2 and pushes the material to the bottom of the extraction tank 2. The material in the extraction tank 2 is discharged more cleanly to avoid waste.

[0044] The top of the extraction tank 2 is provided with a feeding port 28 for adding the broken Haematococcus pluvialis and the extraction solvent into the extraction tank 2. Figure 2 and Figure 5 As shown, the bottom of the extraction tank 2 is provided with a cylindrical discharge pipe 29 extending downward, and the lower end of the discharge pipe 29 is detachably installed with a sealing plate 30 by bolts; a filter screen 32 is provided in the discharge pipe 29, which is driven by a motor 31 and rotates around a diameter of the discharge pipe 29. The filter screen 32 is circular and the area of ​​the filter screen 32 is consistent with the cross-sectional area of ​​the inner cavity of the discharge pipe 29. The opposite ends of the filter screen 32 are respectively fixed with rotating shafts 33 by bolts. The two rotating shafts 33 extend along the same diameter of the filter screen 32, and the two rotating shafts 33 are respectively rotatably installed on the side walls of the discharge pipe 29, and the two rotating shafts 33 coincide with a diameter of the discharge pipe 29. The motor 31 is installed at the bottom of the extraction tank 2 by bolts, and one of the rotating shafts 33 extends to the outside of the discharge pipe 29 and is connected to the rotating shaft of the motor 31 through a coupling; a discharge port 34 is provided on one side of the discharge pipe 29 below the filter screen 32, and a valve is installed on the discharge port 34.

[0045] In the initial state, the filter screen 32 is in a horizontal state; after one extraction of the Haematococcus pluvialis added to the extraction tank 2 is completed, the valve on the discharge port 34 is opened, and the extract in the extraction tank 2 is filtered through the filter screen 32 and discharged from the discharge port 34, and the fixed material in the extraction tank 2 stays on the top of the filter screen 32, which makes it more convenient to carry out subsequent processing of the extract; when the extract in the extraction tank 2 is completely discharged, the valve on the discharge port 34 is closed, and the extraction solvent is added to the extraction tank 2 again, so as to perform multiple extraction operations on the Haematococcus pluvialis raw material and improve economic efficiency; or when the extract in the extraction tank 2 is completely discharged, the sealing plate 30 at the lower end of the discharge pipe 29 is removed, and the filter screen 32 is driven by the motor 31 to rotate to a vertical state, so that the residue on the filter screen 32 can be discharged from the lower end of the discharge pipe 29.

[0046] In order to prevent liquid from accumulating in the extraction tank 2 , the bottom wall of the inner cavity of the extraction tank 2 is provided with a tapered surface 35 which is higher in the middle and lower at the edges. The upper end of the discharge pipe 29 is connected to one side edge of the tapered surface 35 .

[0047] In this embodiment, scraping rods 36 matching the conical surface 35 are welded to the opposite sides of the lower end of the fixed sleeve 8. When the lifting mechanism drives the sleeve 5 to move to the lower limit position, the scraping rods 36 contact the conical surface 35 at the bottom of the inner cavity of the extraction tank 2 to scrape off the material attached to the bottom of the extraction tank 2.

[0048] Example 2:

[0049] like Figures 6 to 9 As shown, the difference between this embodiment and the first embodiment is that a vertically extending liquid extraction pipe 37 is provided on one side of the extraction tank 2, and a sealing cover 38 is fixed to the upper and lower ends of the liquid extraction pipe 37 by bolts. A liquid inlet pipe 39 is welded between the lower end of the liquid extraction pipe 37 and the side wall of the extraction tank 2, and a liquid outlet pipe 40 is welded between the upper end of the liquid extraction pipe 37 and the side wall of the extraction tank 2. A piston 41 is vertically movably installed in the liquid extraction pipe 37, and a piston 41 is installed on the piston 41 from bottom to top. The one-way valve assembly is connected, and an upward extending pull rod 42 is fixed to the top of the piston 41 by bolts. The pull rod 42 is coaxially arranged with the liquid extraction tube 37. The sealing cover 38 at the upper end of the liquid extraction tube 37 is provided with a through hole for the pull rod 42 to pass through. A sealing member is provided between the inner wall of the through hole and the pull rod 42. The sealing member can be a sealing rubber ring to prevent the material in the liquid extraction tube 37 from overflowing through the through hole and the pull rod 42; the upper end of the pull rod 42 is fixed to the cantilever 25 by bolts.

[0050] like Figure 8 and Figure 9As shown, multiple groups of one-way valve assemblies are evenly spaced around the circumference of the pull rod 42. The one-way valve assembly includes a positioning hole 43 that vertically penetrates the piston 41. The piston 41 is provided with a vertically penetrating liquid hole 44 located around the positioning hole 43. A positioning post 45 is installed in the positioning hole 43. The upper end of the positioning post 45 is integrally formed with a leather cup 46 for sealing the liquid holes 44 around the positioning hole 43. The lower end of the positioning post 45 is integrally formed with an inverted conical stopper 47 for preventing the leather cup 46 from falling off.

[0051] When the cantilever 25 moves back and forth up and down, the piston 41 is driven to move back and forth up and down by the pulling rod 42. When the piston 41 moves down, the hydraulic pressure below the piston 41 increases, thereby causing the edge of the leather cup 46 to tilt upward, and the liquid hole 44 is opened, and then the material in the liquid extraction pipe 37 below the piston 41 flows upward through the liquid hole 44; when the piston 41 moves up, the hydraulic pressure above the piston 41 increases, thereby causing the edge of the leather cup 46 to press down against the upper end of the liquid hole 44, and the liquid hole 44 is closed. Driven by the piston 41, the material located deep in the extraction tank 2 enters the liquid extraction pipe 37 below the piston 41 through the liquid inlet pipe 39, and at the same time, the material in the liquid extraction pipe 37 above the piston 41 flows back to the upper liquid surface of the extraction tank 2 through the liquid outlet pipe 40, thereby promoting the up and down flow of the material in the extraction tank 2, and further improving the uniformity of the distribution of Haematococcus pluvialis in the extraction solvent.

[0052] In order to prevent the accumulation of materials in the liquid extraction pipe 37, the end of the liquid inlet pipe 39 connected to the extraction tank 2 is tilted downward; and the end of the liquid outlet pipe 40 connected to the extraction tank 2 is tilted downward.

[0053] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An astaxanthin extraction device, characterized in that: The invention also provides a plurality of sliding sleeves, each of which is provided with a plurality of sliding sleeves, each of which is provided with a plurality of sliding sleeves, each of which is provided with a plurality of sliding sleeves, each of which is provided with a plurality of sliding sleeves. A vertically extending hollow tube is fixedly mounted on the first mounting plate, and a guide hole for the hollow tube to pass through is provided on the top wall of the extraction tank; a vertically extending optical axis is fixedly mounted on the second mounting plate, and the optical axis is vertically slidably mounted in the hollow tube; The lifting mechanism includes a stand located on one side of the extraction tank, the stand is provided with a slide driven by a screw mechanism to move vertically, a cantilever is fixedly mounted on the slide, and the upper end of the hollow tube is fixedly mounted on the cantilever; The upper end of the optical axis passes through the outside of the hollow tube and is fixedly mounted with a mounting seat. The telescopic component is an electric push rod fixedly mounted on the mounting seat. The output end of the electric push rod extends downward and is fixedly mounted on the cantilever.

2. An astaxanthin extraction device according to claim 1, characterized in that: The scraper is in a spiral shape that matches the inner wall of the extraction tank.

3. An astaxanthin extraction device according to claim 1, characterized in that: The top of the extraction tank is provided with a feeding port; the bottom of the extraction tank is provided with a cylindrical discharge pipe extending downward, the lower end of the discharge pipe is detachably provided with a sealing plate, and a filter screen is provided in the discharge pipe that is driven by a motor and rotates around a diameter of the discharge pipe. The filter screen is circular and the area of ​​the filter screen is consistent with the cross-sectional area of ​​the inner cavity of the discharge pipe; The discharge pipe below the filter screen is provided with a discharge port, and a valve is installed on the discharge port.

4. An astaxanthin extraction device according to claim 3, characterized in that: The bottom wall of the inner cavity of the extraction tank is provided with a conical surface which is high in the middle and low at the edge, and the upper end of the discharge pipe is connected to one side edge of the conical surface.

5. An astaxanthin extraction device according to claim 4, characterized in that: A scraper rod matching the conical surface is also fixedly mounted on the fixed sleeve.

6. An astaxanthin extraction device according to claim 1, characterized in that: A vertically extending liquid extraction pipe is provided on one side of the extraction tank, and the upper and lower ends of the liquid extraction pipe are closed. A liquid inlet pipe is connected between the lower end of the liquid extraction pipe and the extraction tank, and a liquid outlet pipe is connected between the upper end of the liquid extraction pipe and the extraction tank. A piston is vertically movably installed in the liquid extraction pipe, and a one-way valve assembly that conducts from bottom to top is installed on the piston. An upward extending pulling rod is fixedly installed on the piston. A through hole is provided on the top of the liquid extraction pipe for the pulling rod to pass through, and the upper end of the pulling rod is fixedly installed on the cantilever.

7. An astaxanthin extraction device according to claim 6, characterized in that: The end of the liquid inlet pipe connected to the extraction tank is tilted downward; the end of the liquid outlet pipe connected to the extraction tank is tilted downward.

Images