WO2024065975A1 - Dispositif de concentration sous vide à basse température pour extrait végétal - Google Patents

Dispositif de concentration sous vide à basse température pour extrait végétal Download PDF

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Publication number
WO2024065975A1
WO2024065975A1 PCT/CN2022/131558 CN2022131558W WO2024065975A1 WO 2024065975 A1 WO2024065975 A1 WO 2024065975A1 CN 2022131558 W CN2022131558 W CN 2022131558W WO 2024065975 A1 WO2024065975 A1 WO 2024065975A1
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WO
WIPO (PCT)
Prior art keywords
evaporation tank
inlet pipe
liquid inlet
heating
fixedly connected
Prior art date
Application number
PCT/CN2022/131558
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English (en)
Chinese (zh)
Inventor
朱明杰
易孟杰
廖书桥
Original Assignee
长沙市惠瑞生物科技有限公司
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Application filed by 长沙市惠瑞生物科技有限公司 filed Critical 长沙市惠瑞生物科技有限公司
Publication of WO2024065975A1 publication Critical patent/WO2024065975A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D1/00—Evaporating
    • B01D1/0064—Feeding of liquid into an evaporator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D1/00—Evaporating
    • B01D1/22—Evaporating by bringing a thin layer of the liquid into contact with a heated surface
    • B01D1/222—In rotating vessels; vessels with movable parts
    • B01D1/223—In rotating vessels; vessels with movable parts containing a rotor
    • B01D1/225—In rotating vessels; vessels with movable parts containing a rotor with blades or scrapers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D1/00—Evaporating
    • B01D1/30—Accessories for evaporators ; Constructional details thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/10—Vacuum distillation

Definitions

  • the invention belongs to the technical field of plant extraction, and particularly relates to a low-temperature vacuum concentration device for plant extracts.
  • the vacuum pump When working, the vacuum pump will first draw a certain vacuum environment inside the low-temperature distillation and concentration equipment, so as to achieve the purpose of lowering the evaporation boiling point of the material, and when the air pressure inside the low-temperature distillation and concentration equipment increases with the evaporation of the plant extract, the vacuum pump will work intermittently, so that the inside of the low-temperature distillation and concentration equipment is always in a certain vacuum environment, thereby ensuring that the plant extract can be evaporated and concentrated at a lower temperature.
  • a Chinese patent with the announcement number CN103007557B proposed a low-temperature vacuum concentration device for plant extracts, "composed of a concentration tank, a hot water circulation pump, a heating medium heat exchanger, a circulating hot water pool, and a water jet vacuum system.” It is a special low-temperature concentration device that uses circulating hot water as the heating medium, which can effectively avoid the problem of local high temperature of the heater producing charred debris.
  • the plant extract low-temperature vacuum concentrator proposed in the above patent solves the temperature problem in the plant extract concentration process to a certain extent, during use, the existing plant extract low-temperature vacuum concentrator has a long evaporation time and uneven evaporation because the plant extract is evaporated in the concentration tank after heating and there is a lot of plant extract in the concentration tank.
  • the present invention provides a low-temperature vacuum concentration device for plant extracts to solve the problems raised in the above background technology.
  • a low-temperature vacuum concentration device for plant extracts comprising an evaporator, a liquid inlet pipe is inserted through the rear tank wall of the evaporator, one end of the liquid inlet pipe located inside the evaporator is connected to a plurality of atomizing nozzles, and the plurality of atomizing nozzles are distributed in a ring shape, the part of the liquid inlet pipe located inside the evaporator is rotatably sleeved with a heating cover, and the rear side of the heating cover is fixedly inserted through the rear tank wall of the evaporator, a power component for driving the liquid inlet pipe to rotate is provided at the side position of one end of the liquid inlet pipe located outside the evaporator, and the end of the liquid inlet pipe is rotatably connected to a connecting pipe, a sealing door is installed on the front side of the evaporator, the top and bottom of the evaporator are
  • the power assembly includes a transmission shaft, which is transmission-connected to the rear side of the evaporator, a motor is connected to the rear end of the transmission shaft, a first gear is sleeved on the transmission shaft, a second gear is sleeved at a position of the liquid inlet pipe opposite to the first gear, and the second gear is meshed with the first gear.
  • the heating hood is funnel-shaped, and the opening of the heating hood gradually decreases from front to back, the end of the liquid inlet pipe located inside the heating hood is of closed design, and a plurality of atomizing nozzles are installed at the edge of the liquid inlet pipe, and a fixed shaft is threadedly connected to the axis of one end of the liquid inlet pipe located inside the evaporator, and the top and bottom of the fixed shaft are symmetrically fixedly connected with fixed rods, and the end of the fixed rod away from the fixed shaft is fixedly connected with a scraper, and the scraper is in contact with the inner wall of the heating hood.
  • a V-shaped guide plate is provided at the bottom of the heating hood, and both sides of the V-shaped guide plate are inclined downward, the front and rear of the V-shaped guide plate are fixedly connected to the inner walls of the front and rear sides of the evaporator respectively, and there is a gap between the two sides of the V-shaped guide plate and the inner wall of the side of the evaporator, and heating plates are symmetrically fixedly connected to the outer walls of both sides of the evaporator, and the two heating plates are respectively opposite to the two sides of the V-shaped guide plate.
  • a baffle is provided on the front side of the heating hood, the diameter of the baffle is larger than the diameter of the opening on the front side of the heating hood, the top of the baffle is rotatably connected to a rotating shaft, the two ends of the rotating shaft are respectively fixedly connected to the inner walls on both sides of the evaporator, and a block is provided on the rear side of the baffle, the block is fixedly connected to the top of the V-shaped guide plate, and the block can contact the baffle, and the rear edge of the baffle is fixedly connected to an arc-shaped water retaining strip, and a notch is provided near the bottom of the water retaining strip.
  • an annular limit groove is opened on the outer wall of the heating hood near the front side, and two limit wheels are arranged in the limit groove.
  • the axis of the limit wheel is rotatably connected to the limit shaft, and the front end of the limit shaft is fixedly connected with an L-shaped rod, and the two L-shaped rods are respectively fixedly connected to the front ends of the two scrapers.
  • guide strips are symmetrically fixedly connected on both sides of the top of the V-shaped guide plate, and the guide strips are in a V-shape with an angle greater than ninety degrees.
  • the angles of the two guide strips are opposite to each other, and the angle of the guide strip is opposite to the position of the baffle.
  • the guide strip is provided with multiple through holes near the top of the V-shaped guide plate.
  • a handle is fixedly connected to the front side of the baffle near the bottom and the front side of the sealed door, and the handle is made of stainless steel.
  • the inner wall of the heating hood is in a continuous and smooth wave shape, and the side of the scraper close to the inner wall of the heating hood matches the shape of the inner wall of the heating hood.
  • the fixed shaft drives the two scrapers to scrape along the inner wall of the heating cover under the drive of the liquid inlet pipe.
  • the plant extract remaining on the inner wall of the heating cover that has not yet evaporated can be scraped off by the scrapers, thereby preventing the plant extract from generating burnt debris on the inner wall of the heating cover and ensuring the heating efficiency of the heating cover.
  • the extract can contact the guide strip under the action of gravity. At this time, the plant extract can flow evenly on the top of the V-shaped guide plate through the through holes on the guide strip under the guidance of the guide strip, thereby increasing the heating area of the plant extract.
  • the plant extract flows along the top of the V-shaped guide plate to the position where the inner wall of the evaporation tank is opposite to the heating plate, the plant extract drips more evenly on the evaporation tank, so that the heating plate can further evaporate the plant extract evenly, thereby improving the evaporation efficiency of the plant extract.
  • FIG1 is a first perspective schematic diagram of the present invention
  • FIG2 is a second perspective schematic diagram of the present invention.
  • Fig. 3 is a three-dimensional cross-sectional view of the present invention.
  • FIG4 is a perspective schematic diagram of a baffle, a V-shaped guide plate and a guide strip in the present invention
  • FIG. 5 is a perspective schematic diagram of the internal structure of the heating cover in the present invention.
  • the present invention provides a low-temperature vacuum concentration device for plant extracts as shown in Figures 1 to 5, comprising an evaporation tank 1, a liquid inlet pipe 2 is inserted through the rear tank wall of the evaporation tank 1, and the end of the liquid inlet pipe 2 located inside the evaporation tank 1 is connected to a plurality of atomizing nozzles 3, and the plurality of atomizing nozzles 3 are distributed in a ring shape, the part of the liquid inlet pipe 2 located inside the evaporation tank 1 is rotatably sleeved with a heating cover 4, and the rear side of the heating cover 4 is fixedly inserted through the rear tank wall of the evaporation tank 1, and the side position of the liquid inlet pipe 2 located at one end outside the evaporation tank 1 is provided with a power assembly 5 for driving the liquid inlet pipe 2 to rotate, the power assembly 5 comprises a transmission shaft 51, the transmission shaft 51 is transmission-connected to the rear side of the evaporation tank 1, the rear end of the transmission shaft
  • the vacuum pump 10 When evaporating the plant extract, the vacuum pump 10 is first started to evacuate the evaporator 1. When the interior of the evaporator 1 reaches a specified pressure, the vacuum pump 10 is turned off (and in the subsequent evaporation process, when the vacuum pump 10 evacuates the evaporator 1, the atomizing nozzle 3 is in a stopped state). Then, the motor 52 is started to drive the second gear 54 to rotate through the first gear 53 on the rotating shaft 17. As the second gear 54 rotates, the liquid inlet pipe 2 can start to rotate together with the second gear 54. When the rotation speed of the liquid inlet pipe 2 is stable, the plant extract is injected into the liquid inlet pipe 2 through the connecting pipe 6.
  • the heating cover 4 can quickly and evenly evaporate the plant extract sprayed on its inner wall, thereby improving the evaporation efficiency of the plant extract;
  • the evaporated gas can then enter the subsequent condensation device through the exhaust valve 8 for further purification, and the residual solution after evaporation can be discharged from the evaporation tank 1 through the drain valve 9.
  • the heating hood 4 is funnel-shaped, and the opening of the heating hood 4 gradually decreases from front to back.
  • the end of the liquid inlet pipe 2 located inside the heating hood 4 is of a closed design, and a plurality of atomizing nozzles 3 are installed at the edge of the liquid inlet pipe 2.
  • the liquid inlet pipe 2 is located inside the evaporator 1 and is threadedly connected to a fixed shaft 11 at the axis center of one end thereof.
  • the top and bottom of the fixed shaft 11 are symmetrically fixedly connected to fixed rods 12.
  • the end of the fixed rod 12 away from the fixed shaft 11 is fixedly connected to a scraper 13, and the scraper 13 is fitted with the inner wall of the heating hood 4.
  • the inner wall of the heating hood 4 is in a continuous and smooth wavy shape, and the side of the scraper 13 close to the inner wall of the heating hood 4 matches the shape of the inner wall of the heating hood 4;
  • the heating cover 4 can have a sufficient heating surface to contact with the plant extract, thereby improving the evaporation efficiency of the plant extract;
  • the fixed shaft 11 drives the two scrapers 13 to scrape along the inner wall of the heating hood 4 under the drive of the liquid inlet pipe 2.
  • the scrapers 13 scrape, the plant extract remaining on the inner wall of the heating hood 4 that has not yet evaporated can be scraped off by the scrapers 13, thereby avoiding the generation of burnt debris on the inner wall of the heating hood 4 by this part of the plant extract, thereby ensuring the heating efficiency of the heating hood 4.
  • a V-shaped guide plate 14 is provided at the bottom of the heating cover 4, and both sides of the V-shaped guide plate 14 are inclined downward, and the front and rear of the V-shaped guide plate 14 are fixedly connected to the inner walls of the front and rear sides of the evaporation tank 1, respectively, and there is a gap between the two sides of the V-shaped guide plate 14 and the inner wall of the side of the evaporation tank 1, and the heating plates 15 are symmetrically fixedly connected to the outer walls of the two sides of the evaporation tank 1, and the two heating plates 15 are respectively opposite to the two sides of the V-shaped guide plate 14, and the guide strips 23 are symmetrically fixedly connected to the two sides of the top of the V-shaped guide plate 14, and the guide strips 23 are V-shaped with an angle greater than ninety degrees, and the angles of the two guide strips 23 are opposite to each other, and the angle of the guide strip 23 is opposite to the position of the baffle 16, and the guide strip 23 is close to the V-shaped A plurality of
  • part of the plant extract that can be evaporated by the heating hood 4 per unit time is limited, part of the plant extract that has not been evaporated can fall onto the baffle 16 at the corresponding position on the inner side of the water retaining strip 19 along the direction of the inner wall of the heating hood 4 under the scraping and guiding action of the scraper 13, and then the extract that falls on the baffle 16 falls on the top of the V-shaped guide plate 14 through the gap of the water retaining strip 19 under the action of gravity, and then the plant extract that falls on the top of the V-shaped guide plate 14 can move along the top of the V-shaped guide plate 14 in the direction of the guide strip 23 under the action of gravity.
  • the plant extract When the plant extract contacts the guide strip 23, the plant extract can flow evenly on the top of the V-shaped guide plate 14 through the through holes on the guide strip 23 under the guiding action of the guide strip 23, thereby increasing the plant extract.
  • the plant extract flows along the top of the V-shaped guide plate 14 to the position where the inner wall of the evaporation tank 1 is opposite to the heating plate 15, the plant extract drips more evenly on the evaporation tank 1, so that the heating plate 15 can further evaporate the plant extract evenly, thereby improving the evaporation efficiency of the plant extract;
  • the side wall of the evaporator 1 rarely contacts the plant extract, so that the cleaning range of the inner wall of the evaporator 1 is small.
  • the baffle 16 is rotatably connected to the inner wall of the evaporator 1 through the rotating shaft 17, when cleaning the inner wall of the evaporator 1, the handle 24 on the baffle 16 can be pulled to deflect it upward, so that the inner wall of the heating cover 4 can be exposed, thereby facilitating the cleaning of the inner wall of the heating cover 4.
  • an annular limiting groove is provided near the front side of the outer wall of the heating cover 4, and two limiting wheels 20 are provided in the limiting groove.
  • the limiting wheels 20 are rotatably connected to a limiting shaft 21 at the axis center, and an L-shaped rod 22 is fixedly connected to the front end of the limiting shaft 21, and the two L-shaped rods 22 are fixedly connected to the front ends of the two scrapers 13 respectively;
  • the limiting wheel 20 can roll along the limiting groove, thereby limiting the free end of the scraper 13 to prevent the scraper 13 from shaking during the process of scraping the inner wall of the heating hood 4.

Abstract

L'invention concerne un dispositif de concentration sous vide à basse température pour un extrait végétal, comprenant un réservoir d'évaporation (1). Un tuyau d'entrée de liquide (2) passe à travers et est inséré dans la paroi de réservoir du côté arrière du réservoir d'évaporation (1), une pluralité de buses d'atomisation (3) sont reliées à l'extrémité du tuyau d'entrée de liquide (2) située à l'intérieur du réservoir d'évaporation (1), et la pluralité de buses d'atomisation (3) sont réparties de manière annulaire ; un couvercle chauffant (4) est emmanché en rotation sur la partie du tuyau d'entrée de liquide (2) située à l'intérieur du réservoir d'évaporation (1), et le côté arrière du couvercle chauffant (4) passe à travers de manière fixe et est inséré dans la paroi de réservoir du côté arrière du réservoir d'évaporation (1) ; un ensemble de propulsion (5) entraînant en rotation le tuyau d'entrée de liquide (2) est prévu au niveau d'une position de surface latérale de l'extrémité du tuyau d'entrée de liquide (2) située à l'extérieur du réservoir d'évaporation (1), et un tuyau de raccordement (6) est raccordé de manière rotative à ladite extrémité du tuyau d'entrée de liquide (2) ; une porte d'étanchéité (7) est montée sur le côté avant du réservoir d'évaporation (1), une vanne d'échappement (8) et une vanne de purge (9) sont respectivement raccordées à la partie supérieure et à la partie inférieure du réservoir d'évaporation (1), et une pompe à vide (10) est également raccordée à la partie supérieure du réservoir d'évaporation (1). Le dispositif peut améliorer l'efficacité d'évaporation d'extraits végétaux.
PCT/CN2022/131558 2022-09-27 2022-11-11 Dispositif de concentration sous vide à basse température pour extrait végétal WO2024065975A1 (fr)

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CN202211179471.4 2022-09-27
CN202211179471.4A CN115253334B (zh) 2022-09-27 2022-09-27 植物提取物低温真空浓缩装置

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WO2024065975A1 true WO2024065975A1 (fr) 2024-04-04

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CN115253334B (zh) * 2022-09-27 2023-01-06 长沙市惠瑞生物科技有限公司 植物提取物低温真空浓缩装置
CN116036624B (zh) * 2023-03-07 2023-11-03 枣庄全鼎生物科技股份有限公司 一种生物酶制剂用蒸发浓缩装置

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