A concentration device for extracting ginkgo leaves

Abstract

The present invention discloses a concentration device for extracting ginkgo leaves, which belongs to the technical field of evaporation and concentration, and includes an evaporation and concentration tank, a heating tank and a drying tank; a secondary steam pipe is fixedly installed on the top of the evaporation and concentration tank; a steam inlet is fixedly installed on the heating tank, an external circulation pipeline is arranged between the evaporation and concentration tank and the heating tank, and a discharge pipeline is arranged between the evaporation and concentration tank and the drying tank. Compared with the prior art, the present invention pressurizes the secondary steam through a booster pump, so that it quickly enters the interior of a spiral channel, realizes sufficient gas-liquid separation, obtains high-temperature condensed water and high-temperature non-condensable gas, and then injects the high-temperature non-condensable gas into the concentrated extract inside the drying tank in the form of bubbles through a drying tube array, absorbs water during the movement of bubbles formed by the non-condensable gas from the inside to the outside, and realizes drying of the concentrated extract from the inside to the outside, thereby making full use of the heat of the secondary steam to dry the concentrated extract.

Description

Technical Field

[0001] The invention belongs to the technical field of evaporation and concentration, and in particular relates to a concentration device for ginkgo leaf extraction. Background Art

[0002] The active ingredients of Ginkgo are terpenes, including ginkgolides and bilobalide. These ginkgo flavonoids-glycoside components have strong antioxidant and free radical scavenging capabilities. The medicinal value and application of Ginkgo biloba extract are extremely extensive. With the use of advanced technology, processes and equipment, through further extraction, separation and purification, its pharmacological effects are more obvious. In addition to its significant antagonism of PAF receptors, it can also play a role in anti-inflammatory, anti-allergic, vasodilation, cardiovascular and cerebrovascular protection, peripheral blood circulation improvement, serum cholesterol reduction and auxiliary anti-cancer effects. It can be widely used in the prevention and treatment of cardiovascular and cerebrovascular, nervous and other systemic diseases and health care.

[0003] The extraction of Ginkgo biloba extract requires the concentration, drying, and crushing of the extract. At present, the concentration of the extract mainly adopts external circulation evaporation and concentration equipment, and the concentrated extract needs to be transferred to the vacuum dryer for drying. Since the secondary steam generated by evaporation and concentration during the operation of the external circulation evaporator needs to be cooled by the condenser, the continuous operation of the condenser not only greatly increases the equipment cost, but also the heat in the high-temperature condensed water and non-condensable gas in the secondary steam is absorbed and lost by the condenser, resulting in the equipment not meeting the requirements of economic and energy-saving use.

[0004] Therefore, in view of the above technical problems, it is necessary to provide a concentration device for ginkgo leaf extraction.

[0005] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0006] The object of the present invention is to provide a concentration device for ginkgo leaf extraction, which can solve the problem that the continuous operation of the condenser not only greatly increases the equipment cost, but also the heat in the high-temperature condensed water in the secondary steam and the non-condensable gas is absorbed and lost by the condenser, resulting in the equipment not meeting the requirements of economical and energy-saving use.

[0007] In order to achieve the above object, a technical solution provided by a specific embodiment of the present invention is as follows:

[0008] A concentration device for ginkgo leaf extraction, comprising an evaporation concentration tank, a heating tank and a drying tank;

[0009] A secondary steam pipe is fixedly installed on the top of the evaporation concentration tank;

[0010] A steam inlet is fixedly installed on the heating tank, an external circulation pipeline is arranged between the evaporation concentration tank and the heating tank, and a discharge pipeline is arranged between the evaporation concentration tank and the drying tank;

[0011] The drying tank is provided with a spiral channel inside, one end of the secondary steam pipe is fixed on the drying tank and communicated with the inside of the spiral channel, a booster pump is fixedly installed on the secondary steam pipe, and a tertiary steam pipe is fixedly installed on the drying tank, and one end of the tertiary steam pipe is communicated with the inside of the secondary steam pipe;

[0012] A lifting seat is installed below the drying tank, a sealing seat is fixedly installed on the lifting seat, and the top of the sealing seat is sealed and plugged into the interior of the drying tank and is installed with multiple groups of drying tubes;

[0013] The drying tube array comprises an inner tube body and an outer tube, the bottom end of the inner tube body is fixed on the lifting seat and communicated with the inside of the lifting seat, the inner tube body is provided with a plurality of rows of micropores, the outer tube is rotatably connected to the sealing seat, and the outer tube is movably sleeved on the outside of the inner tube body, and the outer tube is provided with a plurality of groups of strip openings matching the micropores;

[0014] The bottom end of the outer sleeve passes through the interior of the sealing seat, and a driving assembly for driving multiple groups of outer sleeves to rotate simultaneously is arranged inside the sealing seat;

[0015] A diverter box is fixedly installed on the lower end surface of the drying tank, the diverter box is communicated with the interior of the spiral channel, and a high-temperature steam pipe is fixedly installed between the diverter box and the lifting seat.

[0016] In one or more embodiments of the present invention, the calibers of the microholes in each column decrease from top to bottom.

[0017] In one or more embodiments of the present invention, a pressure relief valve is fixedly installed on the top end of the inner tube body, and the pressure relief valve is always higher than the height of the material inside the drying tank.

[0018] In one or more embodiments of the present invention, a water collecting ring is fixedly installed on the outside of the drying tank, and a steam trap is fixedly installed on the bottom end of the diversion box;

[0019] A water guide pipe is fixedly installed between the steam trap and the water collecting ring;

[0020] A drain port is fixedly mounted on the water collecting ring, and a drain valve is fixedly mounted on the drain port.

[0021] In one or more embodiments of the present invention, the external circulation pipeline includes a feed pipeline, a three-way valve and a return pipeline, a heat exchange tube is fixedly installed inside the heating tank, the feed pipeline is fixedly installed on the evaporation concentration tank, and the feed pipeline is connected to one end of the heat exchange tube;

[0022] The three-way valve is fixedly installed at the bottom end of the evaporation concentration tank, the return pipeline is fixedly installed at one end of the three-way valve, and the return pipeline is connected with the other end of the heat exchange tube.

[0023] In one or more embodiments of the present invention, a branch pipe is fixedly installed on the high-temperature steam pipe, and one end of the branch pipe away from the high-temperature steam pipe is connected to the inside of the return pipe;

[0024] A solenoid valve is fixedly installed on the branch pipe.

[0025] In one or more embodiments of the present invention, the discharge pipeline includes a discharge pipe, one end of which is fixed to one end of the three-way valve, and the other end of which is connected to the interior of the drying tank;

[0026] A discharge pump is fixedly installed on the discharge pipe.

[0027] In one or more embodiments of the present invention, the drive assembly includes a double gear ring, and the double gear ring is rotatably connected to the interior of the sealing seat;

[0028] A plurality of groups of drying tubes are arranged on the sealing seat in two layers, inner and outer, and distributed circumferentially;

[0029] The bottom ends of the multiple sets of outer sleeves are all fixedly mounted with linkage gears, and the multiple sets of linkage gears are all matched with the double gear rings;

[0030] A stepper motor is fixedly mounted on the bottom end of the lifting seat, and an output end of the stepper motor penetrates into the interior of the sealing seat and is fixedly connected with a driving gear, and the driving gear matches the double gear ring.

[0031] In one or more embodiments of the present invention, a plurality of groups of cylinders are fixedly mounted on the bottom end of the drying tank, and telescopic ends of the plurality of groups of cylinders are fixed to the lifting seat.

[0032] In one or more embodiments of the present invention, a plurality of groups of water-catching baffles are fixedly mounted on the inner wall of the spiral channel;

[0033] The plurality of groups of water-catching baffles are all inclined upward.

[0034] Compared with the prior art, the present invention uses a booster pump to pressurize the secondary steam, allowing it to quickly enter the spiral channel, achieving sufficient gas-liquid separation, obtaining high-temperature condensed water and high-temperature non-condensable gas, and then injecting the high-temperature non-condensable gas into the concentrated extract in the drying tank in the form of bubbles through the drying tube array. The bubbles formed by the non-condensable gas absorb water during the movement from the inside to the outside, thereby achieving drying of the concentrated extract from the inside to the outside, thereby making full use of the heat of the secondary steam to dry the concentrated extract;

[0035] After the high-temperature condensed water is injected into the water collecting ring, the concentrated extract inside the drying tank can be heated by water bath from the outside to assist in drying the concentrated extract;

[0036] The tertiary steam generated by drying the concentrated extract can be mixed with new secondary steam again through the tertiary steam pipe to achieve recycling, which fully utilizes the heat while eliminating the use of a condenser, meeting the requirements of economical and energy-saving use. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art 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 be obtained based on these drawings without paying creative work.

[0038] Figure 1 The structure of a concentrating device for extracting ginkgo leaves in one embodiment of the present invention is shown in FIG. Figure 1 ;

[0039] Figure 2 The structure of a concentrating device for extracting ginkgo leaves in one embodiment of the present invention is shown in FIG. Figure 2 ;

[0040] Figure 3 It is a partial cross-sectional view of a front view of a concentration device for ginkgo leaf extract in one embodiment of the present invention;

[0041] Figure 4 A cross-sectional view of a drying tank of a ginkgo leaf extract concentration device according to an embodiment of the present invention;

[0042] Figure 5 A concentrating device for extracting ginkgo leaves in one embodiment of the present invention Figure 2 Enlarged view of point A in the middle;

[0043] Figure 6 This is a structural diagram of a sealing seat of a concentrating device for ginkgo leaf extraction in one embodiment of the present invention;

[0044] Figure 7 This is a drying tube structure diagram of a concentration device for ginkgo leaf extraction in one embodiment of the present invention;

[0045] Figure 8 An exploded view of a drying tube array of a concentration device for ginkgo leaf extract in one embodiment of the present invention;

[0046] Fig. 9 It is a top cross-sectional view of a sealing seat of a concentrating device for ginkgo leaf extraction in one embodiment of the present invention;

[0047] Fig.10 It is a top view schematic diagram of a sealing seat of a concentrating device for ginkgo leaf extraction in one embodiment of the present invention;

[0048] Fig.11 It is a front cross-sectional schematic diagram of a sealing seat of a concentrating device for ginkgo leaf extraction in one embodiment of the present invention;

[0049] Fig.12 This is a partial cross-sectional view of a spiral channel of a concentration device for ginkgo leaf extraction in one embodiment of the present invention.

[0050] Description of main reference numerals:

[0051] 10. Evaporation concentration tank; 11. Feed pipeline; 12. Three-way valve; 13. Return pipeline; 14. Discharge pipe; 141. Discharge pump; 15. Secondary steam pipe; 16. Booster pump; 20. Heating tank; 21. Steam inlet; 30. Drying tank; 301. Spiral channel; 3011. Water-catching baffle; 31. Tertiary steam pipe; 32. Water collecting ring; 321. Drainage outlet; 3211. Drainage valve; 33. Lifting seat; 34. Cylinder; 35. Stepping motor; 351. Driving gear; 36. High-temperature steam pipe; 361. Branch pipe; 37. Sealing seat; 38. Diverter box; 381. Steam trap; 39. Water guide pipe; 40. Dry tube array; 41. Inner tube body; 411. Pressure relief valve; 412. Micropore; 42. Outer sleeve; 421. Strip opening; 43. Linkage gear; 50. Double gear ring. DETAILED DESCRIPTION

[0052] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0053] like Figure 1-Figure 12 As shown, a concentration device for ginkgo leaf extraction in one embodiment of the present invention comprises an evaporation concentration tank 10, a heating tank 20 and a drying tank 30. A steam inlet 21 is welded and fixed on one side of the heating tank 20, and the steam inlet 21 is used to connect to a steam generator to provide high-temperature steam for evaporation concentration.

[0054] like Figure 1-Figure 3As shown, an external circulation pipeline is provided between the evaporation concentration tank 10 and the heating tank 20, and the external circulation pipeline includes a feed pipeline 11, a three-way valve 12 and a return pipeline 13. A heat exchange pipe is fixedly installed inside the heating tank 20. The feed pipeline 11 is welded and fixedly installed on one side of the evaporation concentration tank 10, and the feed pipeline 11 is connected to the heat exchange pipe inside the heating tank 20 through a flange.

[0055] The three-way valve 12 is fixedly installed at the bottom end of the evaporation concentration tank 10 , one end of the return pipe 13 is fixed to one end of the three-way valve 12 , and the other end of the return pipe 13 is connected to the heat exchange pipe inside the heating tank 20 .

[0056] Specifically, a circulation passage is formed by the return pipe 13, the heat exchange pipe and the feed pipe 11, and the ginkgo leaf extract in the evaporation concentration tank 10 can enter the heat exchange pipe in the heating tank 20 through the return pipe 13. After the high-temperature steam enters the heating tank 20, it can indirectly heat the extract through the heat exchange pipe, so that the liquid level of the extract gradually rises and boils, and finally sprayed into the evaporation concentration tank 10 through the feed pipe 11 to achieve evaporation and concentration of the extract.

[0057] A water outlet is welded and fixed to the bottom of the heating tank 20 to ensure that the condensed water generated inside the heating tank 20 can be discharged.

[0058] A discharge pipeline is provided between the evaporation concentration tank 10 and the drying tank 30, and the discharge pipeline includes a discharge pipe 14, one end of which is fixed to the other end of the three-way valve 12, and the other end of the discharge pipe 14 is connected to the inside of the drying tank 30. A discharge pump 141 is fixedly installed on the discharge pipe 14, and the discharge pump 141 can deliver the concentrated extract in the evaporation concentration tank 10 into the inside of the drying tank 30 through the discharge pipe 14, so as to realize automatic discharge.

[0059] A secondary steam pipe 15 is fixedly installed on the top of the evaporation concentration tank 10, and the secondary steam generated during the evaporation concentration process can be discharged through the secondary steam pipe 15. A one-way valve is fixedly installed on the secondary steam pipe 15 to ensure that the secondary steam can only flow out and not flow back.

[0060] Preferably, a temporary storage tank for secondary steam can also be installed on the secondary steam pipe 15 to store the secondary steam generated by the first evaporation and concentration during the operation of the equipment, and can also temporarily store excess secondary steam.

[0061] like Figure 4 As shown, a spiral channel 301 is provided between the inner and outer walls of the drying tank 30 , and one end of the secondary steam pipe 15 is fixed to the top of the drying tank 30 and communicated with the interior of the spiral channel 301 , that is, the secondary steam can enter the interior of the spiral channel 301 .

[0062] A booster pump 16 is fixedly installed on the secondary steam pipe 15, and the booster pump 16 can pressurize the secondary steam so that the secondary steam can quickly enter the spiral channel 301 and quickly flow in a spiral manner in the spiral channel 301. During the pressurization process, the secondary steam stored in the temporary storage tank can flow back into the secondary steam pipe 15 to achieve sufficient secondary steam supply. At this time, under the action of centrifugal force, the water in the secondary steam will be separated, so that the secondary steam is separated into high-temperature condensed water and high-temperature non-condensable gas in the spiral channel 301.

[0063] Preferably, Fig.12 As shown, multiple groups of water-catching baffles 3011 are fixedly installed on the inner wall of the spiral channel 301, and the multiple groups of water-catching baffles 3011 are inclined upward. The water-catching baffles 3011 can play a turbulent effect, and can greatly increase the contact area with steam, effectively improve the gas-liquid separation effect, and achieve sufficient gas-liquid separation.

[0064] like Figure 4 and Figure 5 As shown, a diverter box 38 is fixedly installed on the lower end surface of the drying tank 30 , and the diverter box 38 is connected to the inside of the spiral channel 301 . A high-temperature steam pipe 36 is fixedly installed on one side of the diverter box 38 , and the high-temperature non-condensable gas can be discharged through the high-temperature steam pipe 36 .

[0065] A drain valve 381 is fixedly installed at the bottom end of the diversion box 38 , and a water guide pipe 39 is fixedly installed on the drain valve 381 . High-temperature condensed water can be discharged through the drain valve 381 and the water guide pipe 39 .

[0066] A water collecting ring 32 is fixedly installed on the outside of the drying tank 30, and a water collecting chamber is formed between the water collecting ring 32 and the drying tank 30. The end of the water pipe 39 away from the drain valve 381 is connected to the inside of the water collecting ring 32, and high-temperature condensed water can enter the inside of the water collecting chamber through the water pipe 39.

[0067] At this time, since the high-temperature condensed water can directly contact the outer wall of the drying tank 30, the drying tank 30 itself can be heated by a water bath to assist in drying the concentrated extract inside the drying tank 30 and improve the drying efficiency.

[0068] Among them, a drain port 321 is welded and fixed at a position near the bottom of one side of the water collecting ring 32, and a drain valve 3211 is fixedly installed on the drain port 321. By opening the drain valve 3211, the water inside the water collecting chamber can be discharged through the drain port 321, so as to drain the water in time and ensure the normal operation of the equipment.

[0069] A lifting seat 33 is installed below the drying tank 30 , and one end of the high-temperature steam pipe 36 away from the diverter box 38 is connected to the inside of the lifting seat 33 , so that high-temperature non-condensable gas can be introduced into the lifting seat 33 .

[0070] A sealing seat 37 is fixedly mounted on the top of the lifting seat 33 , and the top of the sealing seat 37 is sealingly inserted into the interior of the drying tank 30 to achieve sealing of the bottom of the drying tank 30 .

[0071] Preferably, a sealing ring is fixed to the outer wall of the sealing seat 37 or the inner wall of the drying tank 30 to improve the sealing effect and prevent the leakage of the extract.

[0072] like Figure 4 Combination Figure 6-Figure 8 As shown, multiple groups of drying tubes 40 are installed on the top of the sealing seat 37. Any group of drying tubes 40 includes an inner tube body 41 and an outer tube 42. The bottom end of the inner tube body 41 is fixedly connected to the lifting seat 33 and communicated with the inside of the lifting seat 33. Multiple rows of micropores 412 are provided on the inner tube body 41, and the multiple rows of micropores 412 can spray high-temperature non-condensable gas.

[0073] Specifically, the high-temperature non-condensable gas entering the lifting seat 33 can enter the interiors of multiple groups of inner tubes 41 respectively, and finally be ejected through multiple rows of micropores 412 .

[0074] The outer sleeve 42 is rotatably connected to the sealing seat 37, and the outer sleeve 42 is movably sleeved on the outside of the inner tube body 41, that is, the outer sleeve 42 can rotate outside the inner tube body 41. The inner wall of the outer sleeve 42 is tightly attached to the outer wall of the inner tube body 41, and can seal the micropores 412 on the inner tube body 41.

[0075] The outer sleeve 42 is provided with a plurality of groups of strip openings 421 matching the micropores 412, wherein each group of strip openings 421 corresponds to a column of micropores 412, and when the strip openings 421 coincide with the micropores 412, the micropores 412 are opened; when the strip openings 421 are offset from the micropores 412, the micropores 412 are closed, thereby achieving control over the ejection of high-temperature non-condensable gas.

[0076] like Figure 9-11 As shown, the bottom end of the outer sleeve 42 passes through the bearing to the inside of the sealing seat 37, and the sealing seat 37 is provided with a driving assembly for simultaneously driving multiple groups of outer sleeves 42 to rotate. The driving assembly includes a double gear ring 50, which is rotatably connected to the inside of the sealing seat 37.

[0077] Preferably, the multiple groups of drying tubes 40 are arranged in two layers, inner and outer, on the sealing seat 37 in a circumferential distribution, that is, the multiple groups of outer sleeves 42 penetrating into the sealing seat 37 are arranged in a double-layered ring-like manner.

[0078] The bottom ends of the multiple sets of outer sleeves 42 are all fixedly mounted with linkage gears 43, and gear blocks are provided on the inner and outer walls of the double gear ring 50. The gear blocks on the inner wall of the double gear ring 50 mesh with the linkage gear 43 at the bottom end of the inner outer sleeve 42, and the gear blocks on the outer wall of the double gear ring 50 mesh with the linkage gear 43 at the bottom end of the outer outer sleeve 42. By rotating the double gear ring 50, the inner and outer outer sleeves 42 can be driven to rotate at the same time.

[0079] A stepper motor 35 is fixedly mounted at the bottom end of the lifting seat 33. The output end of the stepper motor 35 penetrates into the interior of the sealing seat 37 and is fixedly connected to a driving gear 351. The driving gear 351 meshes with the tooth blocks on the inner wall of the double gear ring 50. The stepper motor 35 drives the driving gear 351 to rotate, which drives the double gear ring 50 to rotate, and can simultaneously drive multiple sets of outer sleeves 42 to rotate.

[0080] Specifically, when the evaporated and concentrated extract is sent into the drying tank 30, the strip opening 421 and the micropore 412 are misaligned, that is, the micropore 412 is in a closed state, preventing the extract from penetrating into the inner tube body 41 through the micropore 412. At this time, the evaporation and concentration operation continues inside the evaporation and concentration tank 10, and the continuously generated secondary steam is separated into high-temperature condensed water and high-temperature non-condensable gas. After the high-temperature non-condensable gas enters the lifting seat 33, it is distributed to the multiple groups of inner tube bodies 41, so that the internal pressure of the multiple groups of inner tube bodies 41 increases.

[0081] At this time, if the outer sleeve 42 is driven to rotate so that the strip opening 421 overlaps with the micropore 412, the micropore 412 is opened, and the high-temperature non-condensable gas is injected into the extract under pressure to form high-temperature bubbles. By driving the outer sleeve 42 to rotate continuously, the micropore 412 can be opened and closed intermittently to continuously and evenly form high-temperature bubbles inside the extract. During the rising process, the high-temperature bubbles will gradually absorb the moisture inside the extract until they are saturated and explode and discharge at the liquid surface, forming tertiary steam.

[0082] In this way, the extract can be heated from the inside and the moisture can be taken away to remove the residual moisture in the extract, thus achieving efficient drying of the extract. Compared with the drying method of drying from the outside in the prior art, this equipment adopts the drying method of heating from the inside and carrying the internal moisture to the outside, which is more uniform and efficient, and fully utilizes the heat in the secondary steam, achieving a truly economical and energy-saving effect.

[0083] The high-temperature condensed water is continuously injected into the water collection chamber to achieve auxiliary heating from an external water bath, and also achieve a combined internal and external drying effect, further improving the drying efficiency and making more effective use of the heat in the secondary steam.

[0084] like Fig.11As shown, the caliber of each column of micropores 412 decreases from top to bottom. The smaller the caliber of the micropores 412, the farther the bubbles are generated. This allows the positions of the high-temperature bubbles ejected from each column of micropores 412 from top to bottom to be stepped, that is, staggered, so that the bubbles are evenly dispersed and the rising paths are staggered, thereby enabling the extract to be dried more evenly and efficiently.

[0085] In addition, by controlling the operating power of the boost pump 16, the pressure inside the inner tube body 41 can be controlled, thereby controlling the distance of the bubble ejection; by controlling the operating power of the stepper motor 35, the rotation speed of the outer sleeve 42 can be controlled, thereby controlling the time of intermittent opening and closing of the micropores 412, thereby controlling the size of the bubbles generated, so that the drying process can be accurately controlled.

[0086] It is worth noting that Figure 7 and Figure 8 Combination Figure 4 As shown, a pressure relief valve 411 is fixedly installed at the top of the inner tube body 41, and the pressure relief valve 411 is always higher than the material height inside the drying tank 30. When the extract is dried to a certain degree, its own internal pressure will gradually increase, and bubbles will be difficult to form, and even if they are formed, they cannot rise and be discharged quickly. At this time, the strip opening 421 and the micropore 412 are finally staggered, that is, the stepper motor 35 will no longer work after the micropore 412 is closed, but the booster pump 16 continues to run, so that the internal pressure of the inner tube body 41 continues to increase. When it increases to a critical value, the pressure relief valve 411 will automatically open to release the pressure. Due to the continuous injection of high-temperature non-condensable steam, heat can also be transferred to the extract through multiple groups of inner tube bodies 41 and outer sleeves 42, so as to achieve continuous and uniform heating and drying of the extract, and ensure that the extract can be quickly and fully dried.

[0087] A tertiary steam pipe 31 is fixedly installed at the top of the drying tank 30, and one end of the tertiary steam pipe 31 away from the drying tank 30 is connected to the inside of the secondary steam pipe 15. The tertiary steam generated by drying can be introduced into the secondary steam pipe 15 through the tertiary steam pipe 31, and together with the secondary steam, it is further separated into high-temperature condensed water and high-temperature non-condensable gas, so as to achieve recycling and ensure sufficient steam supply for extract drying.

[0088] In addition, if Figure 3 As shown, a branch pipe 361 is fixedly installed on the high-temperature steam pipe 36 , and one end of the branch pipe 361 away from the high-temperature steam pipe 36 is connected to the inside of the return pipe 13 , and the high-temperature non-condensable gas can be introduced into the inside of the return pipe 13 through the branch pipe 361 .

[0089] A solenoid valve is fixedly installed on the branch pipe 361, and the opening and closing of the branch pipe 361 can be controlled by the solenoid valve. In addition, a pressure sensor is fixedly installed inside the lifting seat 33 to monitor the pressure of the high-temperature non-condensable gas. If the pressure of the high-temperature non-condensable gas continues to increase and reaches a critical value, the solenoid valve can automatically open, so that the high-temperature non-condensable gas is distributed to the inside of the return pipe 13 through the branch pipe 361, and mixed with the extract in the cyclic evaporation and concentration process, thereby improving the evaporation and concentration efficiency of the extract.

[0090] Specifically, as the secondary steam is continuously generated, the high-temperature non-condensable gas gradually accumulates and increases, causing the internal pressure of the lifting seat 33 to continue to rise. When the critical value is reached, the solenoid valve on the branch pipe 361 can be automatically opened, allowing the high-temperature non-condensable gas generated by separation to enter the return pipeline 13 through the branch pipe 361 and mix with the extract in the cyclic evaporation and concentration process. Similar to drying, the high-temperature non-condensable gas can absorb moisture from the inside, accelerate the evaporation and concentration of the extract, and realize the reasonable control of pressure and the reasonable distribution and utilization of the high-temperature non-condensable gas, effectively shortening the extraction time of ginkgo leaves.

[0091] like Figure 2 and Figure 3 As shown, a pair of cylinders 34 are fixedly installed at the bottom end of the drying tank 30, and the telescopic ends of the pair of cylinders 34 are fixed to the lifting seat 33. When the evaporated and concentrated extract is dried in the drying tank 30, the lifting seat 33 can be driven down by starting the cylinder 34, so that the sealing seat 37 is separated and extracted from the drying tank 30, so as to take out the dried extract.

[0092] When in use, the extract that has been evaporated and concentrated inside the evaporation and concentration tank 10 can be pumped into the drying tank 30 through the discharge pump 141. At the same time, the new extract to be evaporated and concentrated is immediately injected into the evaporation and concentration tank 10, and evaporation and concentration are continued. The secondary steam generated by evaporation and concentration is pressurized by the booster pump 16 and quickly enters the spiral channel 301. During the spiral flow process, high-temperature condensed water and high-temperature non-condensable gas are separated. Then, the high-temperature condensed water enters the water collection chamber, and the extract inside the drying tank 30 is indirectly heated from the outside by a water bath, while the high-temperature non-condensable gas can enter the extract inside the drying tank 30 in the form of bubbles through the intermittent opening and closing of the micropores 412, and heats and carries water from the inside of the extract until saturation, gradually moves upward, and finally explodes on the liquid surface to form tertiary steam, which flows back to the secondary steam pipe 15 through the tertiary steam pipe 31 to achieve recycling. The device can complete the evaporation, concentration and drying of the extract, and fully utilizes the heat in the secondary steam, eliminating the need for a condenser.

[0093] In the present invention, after the booster pump 16 pressurizes the secondary steam, it is made to quickly enter the spiral channel 301 to achieve sufficient gas-liquid separation, obtain high-temperature condensed water and high-temperature non-condensable gas, and then the high-temperature non-condensable gas is injected into the concentrated extract in the drying tank 30 in the form of bubbles through the drying tube array 40. The bubbles formed by the non-condensable gas absorb water during the movement from the inside to the outside, thereby achieving the drying of the concentrated extract from the inside to the outside, thereby making full use of the heat of the secondary steam to dry the concentrated extract;

[0094] After the high-temperature condensed water is injected into the water collecting ring 32, the concentrated extract inside the drying tank 30 can be heated by water bath from the outside to assist in drying the concentrated extract;

[0095] The tertiary steam generated by drying the concentrated extract can be mixed with the new secondary steam again through the tertiary steam pipe 31 to achieve recycling, which fully utilizes the heat while eliminating the use of the condenser, meeting the economical and energy-saving requirements.

[0096] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0097] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A concentration device for ginkgo leaf extraction, characterized in that: include: An evaporation concentration tank, a secondary steam pipe being fixedly installed on the top of the evaporation concentration tank; A heating tank, wherein a steam inlet is fixedly installed on the heating tank, an external circulation pipeline is arranged between the evaporation concentration tank and the heating tank, and a discharge pipeline is arranged between the evaporation concentration tank and the drying tank; A drying tank, wherein a spiral channel is provided between the inner and outer walls of the drying tank, one end of the secondary steam pipe is fixed on the drying tank and communicated with the interior of the spiral channel, a booster pump is fixedly installed on the secondary steam pipe, and a tertiary steam pipe is fixedly installed on the drying tank, and one end of the tertiary steam pipe is communicated with the interior of the secondary steam pipe; A lifting seat is installed below the drying tank, a sealing seat is fixedly installed on the lifting seat, and the top of the sealing seat is sealed and plugged into the interior of the drying tank and is installed with multiple groups of drying tubes; The drying tube array comprises an inner tube body and an outer tube, the bottom end of the inner tube body is fixed on the lifting seat and communicated with the inside of the lifting seat, the inner tube body is provided with a plurality of rows of micropores, the outer tube is rotatably connected to the sealing seat, and the outer tube is movably sleeved on the outside of the inner tube body, and the outer tube is provided with a plurality of groups of strip openings matching the micropores; The bottom end of the outer sleeve passes through the interior of the sealing seat, and a driving assembly for driving multiple groups of outer sleeves to rotate simultaneously is arranged inside the sealing seat; A diverter box is fixedly installed on the lower end surface of the drying tank, the diverter box is connected to the inside of the spiral channel, and a high-temperature steam pipe is fixedly installed between the diverter box and the lifting seat; A water collecting ring is fixedly installed on the outside of the drying tank, and a steam trap is fixedly installed on the bottom end of the diversion box; A water guide pipe is fixedly installed between the steam trap and the water collecting ring; A drain port is fixedly mounted on the water collecting ring, and a drain valve is fixedly mounted on the drain port; The secondary steam is separated into high-temperature condensed water and high-temperature non-condensable gas inside the spiral channel; A water collecting chamber is formed between the water collecting ring and the drying tank, and the end of the water guide pipe away from the steam trap is connected to the inside of the water collecting ring, and the high-temperature condensed water can enter the water collecting chamber through the water guide pipe; One end of the high-temperature steam pipe away from the diverter box is connected to the interior of the lifting seat, and can introduce the high-temperature non-condensable gas into the interior of the lifting seat.

2. The concentration device for ginkgo leaf extract according to claim 1, characterized in that: The calibers of the micropores in each column decrease from top to bottom.

3. The concentration device for ginkgo leaf extract according to claim 1, characterized in that: A pressure relief valve is fixedly installed on the top of the inner tube body, and the pressure relief valve is always higher than the material height inside the drying tank.

4. The concentration device for ginkgo leaf extract according to claim 1, characterized in that: The external circulation pipeline includes a feed pipeline, a three-way valve and a return pipeline. A heat exchange tube is fixedly installed inside the heating tank. The feed pipeline is fixedly installed on the evaporation concentration tank, and the feed pipeline is connected to one end of the heat exchange tube. The three-way valve is fixedly installed at the bottom end of the evaporation concentration tank, the return pipeline is fixedly installed at one end of the three-way valve, and the return pipeline is connected with the other end of the heat exchange tube.

5. The concentration device for ginkgo leaf extract according to claim 4, characterized in that: A branch pipe is fixedly installed on the high-temperature steam pipe, and one end of the branch pipe away from the high-temperature steam pipe is connected to the inside of the return pipe; A solenoid valve is fixedly installed on the branch pipe.

6. The concentration device for ginkgo leaf extract according to claim 4, characterized in that: The discharge pipeline comprises a discharge pipe, one end of which is fixed to one end of a three-way valve, and the other end of which is connected to the interior of the drying tank; A discharge pump is fixedly installed on the discharge pipe.

7. The concentration device for ginkgo leaf extract according to claim 1, characterized in that: The driving assembly includes a double gear ring, and the double gear ring is rotatably connected to the inside of the sealing seat; A plurality of groups of drying tubes are arranged on the sealing seat in two layers, inner and outer, and distributed circumferentially; The bottom ends of the multiple sets of outer sleeves are all fixedly mounted with linkage gears, and the multiple sets of linkage gears are all matched with the double gear rings; A stepper motor is fixedly mounted on the bottom end of the lifting seat, and an output end of the stepper motor penetrates into the interior of the sealing seat and is fixedly connected with a driving gear, and the driving gear matches the double gear ring.

8. The concentration device for ginkgo leaf extract according to claim 1, characterized in that: A plurality of groups of cylinders are fixedly mounted on the bottom end of the drying tank, and the telescopic ends of the plurality of groups of cylinders are fixed to the lifting seat.

9. The concentrating device for ginkgo leaf extract according to claim 1, characterized in that: A plurality of water-catching baffles are fixedly mounted on the inner wall of the spiral channel; The plurality of groups of water-catching baffles are all inclined upward.

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