Plant extraction, separation and purification device

Abstract

The invention discloses a plant extraction, separation and purification device, and relates to the technical field of separation and purification, the plant extraction, separation and purification device comprises a distillation retort, the distillation retort comprises a retort body and a retort cover arranged at the top of the retort body, a feeding pipe is fixed at the upper part of the side wall of the retort body, and an exhaust pipe is arranged on the retort cover; the two heating mechanisms are respectively fixed on the inner walls of the left side and the right side of the tank body; the condensation mechanism comprises an air inlet cover and a liquid collecting cover, and a plurality of condensation assemblies are arranged between the air inlet cover and the liquid collecting cover. Vaporized liquid mist of a plant extracting solution moves from top to bottom in the condensation cavity of the condensation assembly, meanwhile, cold water moves from bottom to top in the inner water cavity and the outer water cavity of the condensation assembly, and the condensation cavity is located between the inner water cavity and the outer water cavity, so that the cold water can effectively exchange heat with the vaporized liquid mist in the condensation cavity; therefore, vaporized liquid mist in the condensation cavity is condensed, and the condensation efficiency is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of separation and purification, and in particular to a plant extraction, separation and purification device. Background Art

[0002] "Plant extracts" are products that use plants as raw materials, and according to the needs of the extraction area, go through a physical and chemical extraction and separation process to obtain and concentrate one or more active ingredients in the plant in a targeted manner without changing the structure of the active ingredients. According to the different components of the extracted plants, glycosides, acids, polyphenols, polysaccharides, terpenes, flavonoids, alkaloids, etc. are formed; according to different properties, they can be divided into plant oils, extracts, powders, crystals, etc.

[0003] At present, after the initial preparation of plant extracts, they need to be separated and purified. The initially prepared plant extracts contain many fine impurities. The traditional separation and purification of plant extracts is to heat the plant extracts to vaporize the plant extracts, and then filter and condense the vaporized plant extracts to obtain plant extracts with higher purity. When filtering the vaporized liquid mist of the plant extracts, the impurities in the vaporized liquid mist of the plant extracts are easy to adhere to the filter screen, causing the filter screen to be blocked, thereby affecting the filtering effect. At the same time, during condensation, since most of the existing condensing tubes are cylindrical, the vaporized liquid mist located at the center of the condensing tube is not easy to condense, resulting in low condensation efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide a plant extraction, separation and purification device to solve the problems raised in the above background technology.

[0005] In order to achieve the above object, the present invention provides the following technical solution: a plant extraction, separation and purification device, comprising:

[0006] A distillation tank, the distillation tank comprising a tank body and a tank cover arranged on the top of the tank body, a feed pipe is fixed on the upper part of the side wall of the tank body, and an exhaust pipe is arranged on the tank cover;

[0007] Two heating mechanisms, the two heating mechanisms are respectively fixed on the left and right inner walls of the tank body;

[0008] A stirring and filtering mechanism, the stirring and filtering mechanism is installed at the bottom of the tank cover, the stirring and filtering mechanism comprises a conical filter screen, a guide cover is provided below the conical filter screen, a bearing filter screen is installed in the guide cover, a rotating shaft is movably embedded in the middle of the conical filter screen, and cleaning plates are fixed on both sides of the rotating shaft;

[0009] A driving mechanism, the driving mechanism is mounted on the tank cover and is used to drive the rotating shaft to rotate;

[0010] A condensing mechanism, the condensing mechanism comprising an air inlet hood and a liquid collecting hood, a plurality of condensing components are arranged between the air inlet hood and the liquid collecting hood, the upper parts of the side walls of the plurality of condensing components are commonly connected to a drainage main pipe, and the lower parts of the side walls of the plurality of condensing components are commonly connected to a water inlet main pipe;

[0011] A material receiving box, the top end of which is connected to the bottom end of the liquid collecting cover.

[0012] Preferably, the condensation assembly includes a condenser tube, an outer tube sleeve is sleeved on the outer side of the condenser tube, an inner tube is nested inside the condenser tube, upper and lower ends of the inner tube both penetrate the side wall of the condenser tube, an inner water cavity is provided inside the inner tube, a condensation cavity is formed between the outer wall of the inner tube and the inner wall of the condenser tube, an outer water cavity is formed between the outer wall of the condenser tube and the inner wall of the outer tube sleeve, and the inner water cavity is connected with the outer water cavity;

[0013] The vaporized liquid mist of the plant extract moves from top to bottom in the condensation chamber, and at the same time, the cold water moves from bottom to top in the inner water chamber and the outer water chamber. The condensation chamber is located between the inner water chamber and the outer water chamber, so that the cold water can effectively exchange heat with the vaporized liquid mist in the condensation chamber, thereby condensing the vaporized liquid mist in the condensation chamber, effectively improving the condensation efficiency.

[0014] Preferably, the upper end of the condenser tube is connected to the air intake hood, the air intake hood is connected to the exhaust pipe, and the lower end of the condenser tube is connected to the liquid collection hood;

[0015] The vaporized liquid mist of the plant extract enters the condenser tube from the air inlet hood for condensation, and the condensed liquid falls into the liquid collecting hood for collection;

[0016] The lower part of the side wall of the outer pipe sleeve is connected to a water inlet pipe head, and the water inlet pipe head is connected to the water inlet main pipe. The upper part of the side wall of the outer pipe sleeve is connected to a drainage pipe head, and the drainage pipe head is connected to the drainage main pipe.

[0017] The cold water in the water inlet main pipe enters the outer water cavity in the outer pipe sleeve through the water inlet pipe head, part of the water enters the inner water cavity, and finally enters the drainage main pipe through the drainage pipe head.

[0018] Preferably, the condenser tube adopts a flat heat-conducting tube, which is conducive to the dispersion of the vaporized liquid mist of the plant extract in the condenser tube, avoids the concentration of the vaporized liquid mist of the plant extract, and thus facilitates the condensation of the vaporized liquid mist of the plant extract.

[0019] Preferably, the conical filter is fixed to the bottom of the tank cover, and the exhaust pipe, at one end close to the tank cover, passes through the tank cover and extends into the conical filter. The vaporized liquid mist of the plant extract in the tank body needs to enter the conical filter for filtration before being discharged through the exhaust pipe.

[0020] The cleaning plate is in contact with the outer wall of the conical filter screen, so that when the rotating shaft rotates, the cleaning plate is driven to rotate, and the cleaning plate rotates to clean the outer wall of the conical filter screen, scraping off the impurities and water droplets on the conical filter screen, so that the impurities and water droplets fall into the deflector cover;

[0021] Support rods are fixed to the left and right edges of the upper end of the deflector, and the upper ends of the support rods are connected to the bottom of the tank cover, so that the deflector can be installed stably;

[0022] The stirring and filtering mechanism is nested in the tank body.

[0023] Preferably, a liquid return pipe is fixed at the bottom of the deflector cover, the upper end of the rotating shaft rotates to penetrate the tank cover and extends outside the tank cover, the lower end of the rotating shaft rotates to penetrate the load-bearing filter, the deflector cover and the liquid return pipe in sequence, the shaft body of the rotating shaft in the liquid return pipe is fixed with spiral blades, and the bottoms of the left and right sides of the rotating shaft are fixed with multiple stirring rods, and the stirring rods are located below the liquid return pipe;

[0024] When the rotating shaft rotates, it can drive the spiral blades and multiple stirring rods to rotate. The rotation of the multiple stirring rods stirs the plant extract in the tank body to make it heated evenly. The rotation of the spiral blades can discharge the water droplets in the guide cover through the return pipe, and at the same time prevent the vaporized liquid mist of the plant extract from entering the guide cover upward through the return pipe.

[0025] Preferably, the driving mechanism comprises a support, a reduction motor, a driving gear and a driven gear, wherein the driven gear is fixedly sleeved on the top end of the rotating shaft, the support is fixed on the tank cover, the reduction motor is mounted on the support, the output end of the reduction motor is connected to the driving gear, and the driving gear is meshedly connected to the driven gear;

[0026] The reduction motor drives the driving gear to rotate, the driving gear rotates and meshes with the driven gear to drive the rotating shaft to rotate, and the rotation of the rotating shaft drives the cleaning plate, the spiral blades and the multiple stirring rods to rotate.

[0027] Preferably, the heating mechanism comprises a heat-conductive sealing cover and a heating element, the heat-conductive sealing cover is fixed on the inner wall of the tank body, and the heating element is nested in the heat-conductive sealing cover.

[0028] Preferably, a tube cover is fixed to the top end of the feed tube.

[0029] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0030] 1. A stirring and filtering mechanism is provided, wherein a conical filter screen, a guide cover, a bearing filter screen, a rotating shaft and a cleaning plate are provided in the stirring and filtering mechanism. The conical filter screen intercepts impurities in the vaporized liquid mist, thereby improving the purity of the vaporized liquid mist. The cleaning plate rotates to clean the outer wall of the conical filter screen, and scrapes off the impurities and water droplets on the conical filter screen, so that the impurities and water droplets fall onto the bearing filter screen in the guide cover. The bearing filter screen intercepts impurities, so that the impurities remain on the bearing filter screen. The water droplets pass through the bearing filter screen, and then return to the plant extract through the return pipe to continue to be heated and vaporized. The impurities are intercepted by the bearing filter screen to prevent the impurities from returning to the heated plant extract and then being carried by the vaporized plant extract, thereby reducing the probability of the conical filter screen being blocked and improving the filtering effect of the vaporized liquid mist.

[0031] 2. By providing multiple condensation components in the condensation mechanism, the vaporized liquid mist of the plant extract moves from top to bottom in the condensation chamber of the condensation component, and at the same time, cold water moves from bottom to top in the inner water chamber and the outer water chamber of the condensation component. The condensation chamber is located between the inner water chamber and the outer water chamber, so that the cold water can effectively exchange heat with the vaporized liquid mist in the condensation chamber, thereby condensing the vaporized liquid mist in the condensation chamber, effectively improving the condensation efficiency. The condenser tube adopts a flat heat conduction tube, which is beneficial to the dispersion of the vaporized liquid mist of the plant extract in the condenser tube, avoiding the concentration of the vaporized liquid mist of the plant extract, thereby facilitating the condensation of the vaporized liquid mist of the plant extract. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0033] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0034] Figure 2 It is a three-dimensional cross-sectional view of the distillation tank of the present invention;

[0035] Figure 3 It is a schematic diagram of the structure of the stirring and filtering mechanism of the present invention;

[0036] Figure 4 It is a three-dimensional cross-sectional view of the stirring and filtering mechanism of the present invention;

[0037] Figure 5 It is a schematic diagram of the condensation mechanism structure of the present invention;

[0038] Figure 6 It is a schematic diagram of the structure of the condensation component of the present invention;

[0039] Figure 7 is a side sectional view of a condensing assembly of the present invention;

[0040] Figure 8 is a top cross-sectional view of a condensing assembly of the present invention;

[0041] Fig. 9 It is a three-dimensional cross-sectional view of the connection between the condenser and the inner tube of the present invention.

[0042] Description of reference numerals:

[0043] 10. distillation tank; 11. tank body; 12. tank cover; 13. feed pipe; 14. exhaust pipe; 15. pipe cover;

[0044] 20. Heating mechanism;

[0045] 30. stirring and filtering mechanism; 31. conical filter screen; 32. flow guide cover; 33. bearing filter screen; 34. rotating shaft; 35. cleaning plate; 36. supporting rod; 37. liquid return pipe; 38. spiral blade; 39. stirring rod;

[0046] 40. driving mechanism; 41. support; 42. reduction motor; 43. driving gear; 44. driven gear;

[0047] 50. Condensation mechanism; 51. Air inlet cover; 52. Liquid collecting cover; 53. Condensation assembly; 531. Condensation tube; 532. Outer tube sleeve; 533. Inner tube; 534. Inner water cavity; 535. Condensation cavity; 536. Outer water cavity; 537. Water inlet pipe head; 538. Drain pipe head; 54. Drain main pipe; 55. Water inlet main pipe;

[0048] 60. Material collection box. DETAILED DESCRIPTION

[0049] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0050] The present invention provides Figures 1 to 4 A plant extraction, separation and purification device is shown, comprising:

[0051] The distillation tank 10 comprises a tank body 11 and a tank cover 12 arranged on the top of the tank body 11, a feed pipe 13 is fixed to the upper part of the side wall of the tank body 11, and an exhaust pipe 14 is arranged on the tank cover 12;

[0052] Two heating mechanisms 20, the two heating mechanisms 20 are respectively fixed on the left and right inner walls of the tank body 11;

[0053] A stirring and filtering mechanism 30 is installed at the bottom of the tank cover 12. The stirring and filtering mechanism 30 includes a conical filter screen 31. A guide cover 32 is provided below the conical filter screen 31. A bearing filter screen 33 is installed in the guide cover 32. A rotating shaft 34 is movably embedded in the middle of the conical filter screen 31. Cleaning plates 35 are fixed on both sides of the rotating shaft 34.

[0054] The driving mechanism 40 is installed on the tank cover 12 and is used to drive the rotating shaft 34 to rotate.

[0055] The conical filter 31 is fixed to the bottom of the tank cover 12, and the end of the exhaust pipe 14 close to the tank cover 12 passes through the tank cover 12 and extends into the conical filter 31. The vaporized liquid mist of the plant extract in the tank body 11 needs to enter the conical filter 31 for filtration before being discharged through the exhaust pipe 14.

[0056] The cleaning plate 35 is in conflict with the outer wall of the conical filter 31, so that when the rotating shaft 34 rotates, the cleaning plate 35 is driven to rotate, and the cleaning plate 35 rotates to clean the outer wall of the conical filter 31, scraping off the impurities and water droplets on the conical filter 31, so that the impurities and water droplets fall into the deflector 32;

[0057] Support rods 36 are fixed to the left and right edges of the upper end of the air deflector 32, and the upper ends of the support rods 36 are connected to the bottom of the tank cover 12, so that the air deflector 32 is installed stably;

[0058] The stirring and filtering mechanism 30 is nested in the tank body 11 .

[0059] A liquid return pipe 37 is fixed to the bottom of the flow guide cover 32, the upper end of the rotating shaft 34 rotates to penetrate the tank cover 12 and extends to the outside of the tank cover 12, and the lower end of the rotating shaft 34 rotates to penetrate the supporting filter 33, the flow guide cover 32 and the liquid return pipe 37 in sequence, and the shaft body of the rotating shaft 34 in the liquid return pipe 37 is fixed with a spiral blade 38, and a plurality of stirring rods 39 are fixed to the bottom of the left and right sides of the rotating shaft 34, and the stirring rods 39 are located below the liquid return pipe 37;

[0060] When the rotating shaft 34 rotates, it can drive the spiral blades 38 and multiple stirring rods 39 to rotate. The multiple stirring rods 39 rotate to stir the plant extract in the tank body 11 so that it is heated evenly. The rotation of the spiral blades 38 can discharge the water droplets in the guide cover 32 through the return pipe 37, and at the same time prevent the vaporized liquid mist of the plant extract from entering the guide cover 32 upward through the return pipe 37.

[0061] The driving mechanism 40 includes a support 41, a reduction motor 42, a driving gear 43 and a driven gear 44. The driven gear 44 is fixedly sleeved on the top of the rotating shaft 34. The support 41 is fixed on the tank cover 12. The reduction motor 42 is installed on the support 41. The output end of the reduction motor 42 is connected to the driving gear 43, and the driving gear 43 is meshed with the driven gear 44.

[0062] The reduction motor 42 drives the driving gear 43 to rotate, and the driving gear 43 rotates and meshes with the driven gear 44 to drive the rotating shaft 34 to rotate. The rotating shaft 34 rotates and drives the cleaning plate 35, the spiral blades 38 and the plurality of stirring rods 39 to rotate.

[0063] The heating mechanism 20 includes a heat-conducting sealing cover and a heating element. The heat-conducting sealing cover is fixed on the inner wall of the tank body 11, and the heating element is nested in the heat-conducting sealing cover.

[0064] A tube cover 15 is fixed to the top end of the feed tube 13 .

[0065] In the present invention, the plant extract to be purified is added into the tank body 11 through the feed pipe 13, and after completion, the tube cover 15 is closed, the heating mechanism 20 operates to heat the plant extract in the tank body 11, and at the same time the driving mechanism 40 operates, the reduction motor 42 operates to drive the driving gear 43 to rotate, the driving gear 43 rotates and meshes with the driven gear 44 to drive the rotating shaft 34 to rotate, the rotating shaft 34 rotates to drive the cleaning plate 35, the spiral blade 38 and the plurality of stirring rods 39 to rotate, and the plurality of stirring rods 39 rotate to stir the plant extract in the tank body 11 so that it is heated evenly, the plant extract is heated by the heating mechanism 20 to be vaporized, and the vaporized liquid mist is discharged from the tank body 11 through the exhaust pipe 14. When the vaporized liquid mist enters the exhaust pipe 14, it needs to pass through The conical filter 31 intercepts impurities in the vaporized liquid mist, thereby improving the purity of the vaporized liquid mist. The cleaning plate 35 rotates to clean the outer wall of the conical filter 31, scrapes off the impurities and water droplets on the conical filter 31, so that the impurities and water droplets fall onto the supporting filter 33 in the guide cover 32. The supporting filter 33 intercepts the impurities, so that the impurities stay on the supporting filter 33. The water droplets pass through the supporting filter 33 and then return to the plant extract through the return pipe 37 to continue to be heated and vaporized. The impurities are intercepted by the supporting filter 33 to prevent the impurities from returning to the heated plant extract and then being carried away by the vaporized plant extract, thereby reducing the probability of the conical filter 31 being blocked and improving the filtering effect of the vaporized liquid mist.

[0066] like Figure 1 and Figures 5 to 9The condensation mechanism 50 shown in the figure includes an air inlet cover 51 and a liquid collecting cover 52. A plurality of condensation components 53 are arranged between the air inlet cover 51 and the liquid collecting cover 52. The upper parts of the side walls of the plurality of condensation components 53 are commonly connected to a drainage main pipe 54. The lower parts of the side walls of the plurality of condensation components 53 are commonly connected to a water inlet main pipe 55.

[0067] The material receiving box 60 has a top end connected to the bottom end of the liquid collecting cover 52 .

[0068] The condensation assembly 53 includes a condensation tube 531, an outer tube sleeve 532 is sleeved on the outer side of the condensation tube 531, an inner tube 533 is nested inside the condensation tube 531, the upper and lower ends of the inner tube 533 both penetrate the side wall of the condensation tube 531, an inner water cavity 534 is provided inside the inner tube 533, a condensation cavity 535 is formed between the outer wall of the inner tube 533 and the inner wall of the condensation tube 531, an outer water cavity 536 is formed between the outer wall of the condensation tube 531 and the inner wall of the outer tube sleeve 532, and the inner water cavity 534 and the outer water cavity 536 are connected;

[0069] The vaporized liquid mist of the plant extract moves from top to bottom in the condensation chamber 535, and at the same time, the cold water moves from bottom to top in the inner water chamber 534 and the outer water chamber 536. The condensation chamber 535 is located between the inner water chamber 534 and the outer water chamber 536, so that the cold water can effectively exchange heat with the vaporized liquid mist in the condensation chamber 535, thereby condensing the vaporized liquid mist in the condensation chamber 535, effectively improving the condensation efficiency.

[0070] The upper end of the condenser pipe 531 is connected to the air inlet cover 51, the air inlet cover 51 is connected to the exhaust pipe 14, and the lower end of the condenser pipe 531 is connected to the liquid collecting cover 52;

[0071] The vaporized liquid mist of the plant extract enters the condenser tube 531 from the air inlet hood 51 for condensation, and the condensed liquid falls into the liquid collecting hood 52 for collection;

[0072] The lower part of the side wall of the outer pipe sleeve 532 is connected with a water inlet pipe head 537, which is connected to the water inlet main pipe 55. The upper part of the side wall of the outer pipe sleeve 532 is connected with a drain pipe head 538, which is connected to the drain main pipe 54.

[0073] The cold water in the water inlet main pipe 55 enters the outer water cavity 536 in the outer pipe sleeve 532 through the water inlet pipe head 537, and a part of the water in the outer water cavity 536 enters the inner water cavity 534, and finally enters the drainage main pipe 54 through the drainage pipe head 538.

[0074] The condenser 531 is a flat heat-conducting tube.

[0075] In the present invention, the water inlet main pipe 55 and the drainage main pipe 54 are connected to the external water source, and the cold water is input into the condensation component 53 through the water inlet main pipe 55, and then discharged through the drainage main pipe 54. When the cold water flows, it first enters the water inlet pipe head 537 on each condensation component 53 through the water inlet main pipe 55, and then enters the outer water cavity 536 in the outer pipe sleeve 532. A part of the water in the outer water cavity 536 enters the inner water cavity 534, and finally enters the drainage main pipe 54 through the drainage pipe head 538. At the same time, the vaporized liquid mist of the plant extract in the exhaust pipe 14 enters the air inlet cover 51, and then enters the condensation pipe 531 on each condensation component 53. The vaporized liquid mist of the plant extract in the condensation cavity 535 moves from top to bottom, while the cold water moves from bottom to top in the inner water chamber 534 and the outer water chamber 536. The condensation chamber 535 is located between the inner water chamber 534 and the outer water chamber 536, so that the cold water can effectively exchange heat with the vaporized liquid mist in the condensation chamber 535, thereby condensing the vaporized liquid mist in the condensation chamber 535, effectively improving the condensation efficiency. The condensation tube 531 adopts a flat heat conduction tube, which is beneficial to the dispersion of the vaporized liquid mist of the plant extract in the condensation tube 531, avoiding the concentration of the vaporized liquid mist of the plant extract, thereby facilitating the condensation of the vaporized liquid mist of the plant extract. The condensed plant extract falls into the liquid collecting cover 52 for collection, and finally enters the material receiving box 60.

[0076] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A plant extraction, separation and purification device, characterized in that: include: A distillation tank (10), the distillation tank (10) comprising a tank body (11) and a tank cover (12) arranged on the top of the tank body (11), a feed pipe (13) being fixed to the upper part of the side wall of the tank body (11), and an exhaust pipe (14) being arranged on the tank cover (12); Two heating mechanisms (20), the two heating mechanisms (20) being respectively fixed on the left and right inner walls of the tank body (11); A stirring and filtering mechanism (30), the stirring and filtering mechanism (30) being installed at the bottom of the tank cover (12), the stirring and filtering mechanism (30) comprising a conical filter screen (31), a flow guide cover (32) being provided below the conical filter screen (31), a bearing filter screen (33) being installed inside the flow guide cover (32), a rotating shaft (34) being movably embedded in the middle of the conical filter screen (31), and cleaning plates (35) being fixed on both the left and right sides of the rotating shaft (34); A driving mechanism (40), wherein the driving mechanism (40) is mounted on the tank cover (12), and the driving mechanism (40) is used to drive the rotating shaft (34) to rotate; A condensation mechanism (50), the condensation mechanism (50) comprising an air intake cover (51) and a liquid collection cover (52), a plurality of condensation components (53) being arranged between the air intake cover (51) and the liquid collection cover (52), the upper portions of the side walls of the plurality of condensation components (53) being commonly connected to a drainage main pipe (54), and the lower portions of the side walls of the plurality of condensation components (53) being commonly connected to a water intake main pipe (55); A material receiving box (60), the top end of which is connected to the bottom end of the liquid collecting cover (52).

2. A plant extraction, separation and purification device according to claim 1, characterized in that: The condensation component (53) includes a condensation tube (531), the outer side of the condensation tube (531) is sleeved with an outer tube sleeve (532), the inner side of the condensation tube (531) is nested with an inner tube (533), the upper and lower ends of the inner tube (533) both pass through the side wall of the condensation tube (531), an inner water cavity (534) is provided inside the inner tube (533), a condensation cavity (535) is formed between the outer wall of the inner tube (533) and the inner wall of the condensation tube (531), an outer water cavity (536) is formed between the outer wall of the condensation tube (531) and the inner wall of the outer tube sleeve (532), and the inner water cavity (534) and the outer water cavity (536) are interconnected.

3. A plant extraction, separation and purification device according to claim 2, characterized in that: The upper end of the condenser pipe (531) is connected to the air intake hood (51), the air intake hood (51) is connected to the exhaust pipe (14), and the lower end of the condenser pipe (531) is connected to the liquid collection hood (52); The lower part of the side wall of the outer pipe sleeve (532) is connected to a water inlet pipe head (537), and the water inlet pipe head (537) is connected to a water inlet main pipe (55). The upper part of the side wall of the outer pipe sleeve (532) is connected to a drainage pipe head (538), and the drainage pipe head (538) is connected to a drainage main pipe (54).

4. A plant extraction, separation and purification device according to claim 2, characterized in that: The condenser tube (531) is a flat heat-conducting tube.

5. A plant extraction, separation and purification device according to claim 1, characterized in that: The conical filter screen (31) is fixed to the bottom of the tank cover (12), and one end of the exhaust pipe (14) close to the tank cover (12) penetrates the tank cover (12) and extends into the conical filter screen (31); The cleaning plate (35) is in conflict with the outer side wall of the conical filter screen (31); Support rods (36) are fixed to the left and right edges of the upper end of the deflector (32), and the upper ends of the support rods (36) are connected to the bottom of the tank cover (12); The stirring and filtering mechanism (30) is nested in the tank body (11).

6. A plant extraction, separation and purification device according to claim 1, characterized in that: A liquid return pipe (37) is fixed at the bottom of the deflector cover (32); the upper end of the rotating shaft (34) rotates to penetrate the tank cover (12) and extends outside the tank cover (12); the lower end of the rotating shaft (34) rotates to penetrate the supporting filter (33), the deflector cover (32) and the liquid return pipe (37) in sequence; a spiral blade (38) is fixed to the shaft body of the rotating shaft (34) in the liquid return pipe (37); a plurality of stirring rods (39) are fixed to the bottoms of the left and right sides of the rotating shaft (34); the stirring rods (39) are located below the liquid return pipe (37).

7. A plant extraction, separation and purification device according to claim 6, characterized in that: The driving mechanism (40) comprises a support (41), a reduction motor (42), a driving gear (43) and a driven gear (44); the driven gear (44) is fixedly sleeved on the top end of the rotating shaft (34); the support (41) is fixed on the tank cover (12); the reduction motor (42) is mounted on the support (41); the output end of the reduction motor (42) is connected to the driving gear (43); and the driving gear (43) is meshedly connected to the driven gear (44).

8. A plant extraction, separation and purification device according to claim 1, characterized in that: The heating mechanism (20) comprises a heat-conducting sealing cover and a heating element; the heat-conducting sealing cover is fixed on the inner wall of the tank body (11); and the heating element is nested in the heat-conducting sealing cover.

9. A plant extraction, separation and purification device according to claim 1, characterized in that: A tube cover (15) is fixed to the top end of the feed tube (13).

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