Low-temperature reduced-pressure extraction device for traditional Chinese medicine components

Abstract

The invention discloses a low-temperature reduced-pressure extraction device for traditional Chinese medicine components. The low-temperature reduced-pressure extraction device comprises a vacuum heat exchange tank, the vacuum heat exchange tank is fixedly sleeved with a flow guide cover, a discharging pipe is installed below the vacuum heat exchange tank, a support is installed on one side of the flow guide cover, a suction structure is connected to the support, and a flow guide structure is connected to the interior of the flow guide cover. When the device is used, a vacuum pump is started to extract air in the vacuum heat exchange tank, so that the vacuum heat exchange tank is in a vacuum low-pressure state, the boiling point of traditional Chinese medicine liquid in the vacuum heat exchange tank is reduced, then the liquid with the appropriate temperature is conveyed into the flow guide cover through the heat exchange liquid conveying pipe, and the liquid flows out of the heat exchange liquid discharging pipe under flow guide of the flow guide pieces; in the process, the temperature of the liquid can be conducted to the traditional Chinese medicine liquid, the traditional Chinese medicine liquid is boiled and evaporated, traditional Chinese medicine is concentrated and extracted, the retention time and the heat exchange area of the heat exchange liquid in the flow guide cover can be prolonged by arranging the multiple flow guide pieces, then the heat transfer time is prolonged, and the evaporation treatment effect on the traditional Chinese medicine liquid is improved.

Description

Technical Field

[0001] The invention relates to the technical field of traditional Chinese medicine processing equipment, in particular to a low-temperature and low-pressure extraction device for traditional Chinese medicine components. Background Art

[0002] Low-temperature and reduced-pressure extraction of traditional Chinese medicine adopts reduced-pressure concentration technology. In a low-temperature environment of 40℃ to 50℃, the solvent is evaporated quickly by reducing the system pressure, thereby obtaining a high-concentration medicinal solution.

[0003] Chinese patent publication number CN210356307U discloses a low-temperature extraction and low-temperature concentration device for traditional Chinese medicine, which includes: a base plate, a liquid storage chamber, a first pressure pump, a filter device, a second pressure pump, a concentration device, and a temperature control device. The top of the base plate is fixedly installed with the liquid storage chamber, the first pressure pump, the filter device, the second pressure pump, and the concentration device. The top of the liquid storage chamber is provided with a liquid inlet. One side of the liquid storage chamber is fixedly connected to the first pressure pump. One end of the first pressure pump is fixedly connected to the filter device. The filter device includes a filter chamber, a first filter screen, a second filter screen, and a third filter screen. This low-temperature extraction and low-temperature concentration device for traditional Chinese medicine can not only filter out impurities in the raw materials, but also control the heating temperature in real time through low-temperature heating to ensure that the nutrients in the raw materials are not destroyed, thereby improving product quality.

[0004] In the above-mentioned prior art disclosed, the Chinese medicine liquid can be added into the inner frame and decompressed to reduce the boiling point of the Chinese medicine liquid, and then heated and boiled using the heating tube at the bottom. However, the heating tube is arranged at the bottom, and the heat distribution is uneven, which easily causes the bottom medicinal materials or liquid to be overheated, while the top liquid is not heated enough, affecting the extraction effect. Moreover, some of the concentrated Chinese medicine liquid is relatively viscous and easily adheres to the inner wall of the equipment, making it inconvenient to be quickly discharged from the discharge port. Therefore, a low-temperature decompression extraction device for Chinese medicine components is needed to meet people's needs. Summary of the Invention

[0005] The purpose of the present invention is to provide a low-temperature, reduced-pressure extraction device for traditional Chinese medicine components, so as to solve the problem that the heating tube of the low-temperature concentration and extraction equipment for traditional Chinese medicine proposed in the above-mentioned background technology is set at the bottom, the heat distribution is uneven, which affects the extraction effect, and the concentrated part of the traditional Chinese medicine liquid is relatively viscous and easily adheres to the inner wall of the equipment, making it inconvenient to be quickly discharged from the discharge port.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a low-temperature and reduced-pressure extraction device for traditional Chinese medicine ingredients, comprising a vacuum heat exchange tank; a fixed sleeve is provided with a flow guide cover on the vacuum heat exchange tank, a discharge pipe is installed below the vacuum heat exchange tank, a bracket is installed on one side of the flow guide cover, a suction structure is connected to the bracket, a flow guide structure is connected to the inside of the flow guide cover, a connecting shaft is rotatably installed inside the vacuum heat exchange tank, a stirring structure is connected to the connecting shaft, a connecting sleeve rod is movably provided on the connecting shaft, and the discharge structure is connected to the connecting sleeve rod.

[0007] Preferably, the suction structure includes a vacuum pump, which is installed on a bracket. A suction pipe is installed at the suction end of the vacuum pump, one end of the suction pipe is installed above the vacuum heat exchange tank and is connected to the vacuum heat exchange tank, a feeding pipe is installed above the vacuum heat exchange tank, and a sealing cover is detachably installed on the feeding pipe.

[0008] Preferably, the guide structure includes a plurality of guide plates, which are evenly arranged between the guide cover and the vacuum heat exchange tank. The space between two adjacent guide plates forms a flow channel. The outer surface of the guide cover is installed with a heat exchange infusion pipe and a heat exchange drainage pipe, and the heat exchange infusion pipe and the heat exchange drainage pipe are respectively connected to the corresponding flow channels.

[0009] Preferably, the stirring structure includes a motor, which is installed above the vacuum heat exchange tank. The output end of the motor is installed on a connecting shaft, and two connecting rods are symmetrically installed on the connecting shaft. A number of stirring rods are installed on both connecting rods.

[0010] Preferably, a mounting bracket is installed on the inner wall of the vacuum heat exchange tank, a guide tube is installed on the mounting bracket, a plurality of through holes are opened at one end of the guide tube, a spiral liquid feeding piece is fixedly sleeved on the connecting shaft, the spiral liquid feeding piece is located inside the guide tube, and the spiral liquid feeding piece is in contact with the inner wall of the guide tube.

[0011] Preferably, a diverter plate is installed at one end of the guide tube, and the diverter plate is rotatably sleeved on the connecting shaft.

[0012] Preferably, the discharging structure includes a spiral feeding piece, which is fixedly sleeved on the connecting sleeve rod and contacts the inner wall of the discharging pipe. A fixing ring is provided on the fixing sleeve of the connecting shaft, and several linkage block 1s are installed on one side of the fixing ring, and several linkage block 2s are installed on the inner wall of the connecting sleeve rod.

[0013] Preferably, one end of the spring is installed on the inner wall of the connecting sleeve rod, and the other end of the spring is in contact with one side of the fixed ring. The spring is movably sleeved on the connecting shaft, and a sealing cover is threadedly sleeved on the discharge pipe, and one end of the connecting sleeve rod is in contact with the sealing cover.

[0014] Preferably, a scraper is installed on one side of the connecting rod, and the scraper is in contact with the inner wall of the vacuum heat exchange tank.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) When the present invention is used, the Chinese medicine liquid can be added to the vacuum heat exchange tank through the feeding tube, and then the feeding tube is sealed. Then, the vacuum pump is turned on to extract the air in the vacuum heat exchange tank, so that the vacuum heat exchange tank is in a vacuum low-pressure state, thereby reducing the boiling point of the internal Chinese medicine liquid. Subsequently, the liquid of suitable temperature is transported to the guide cover through the heat exchange infusion tube. The liquid will flow out from the heat exchange discharge pipe under the guidance of several guide plates. During the process, the temperature of the liquid will be transferred to the Chinese medicine liquid, so that the Chinese medicine liquid can boil and evaporate at a lower temperature, thereby realizing the concentrated extraction of the Chinese medicine. By setting a plurality of guide plates, the residence time and heat exchange area of ​​the heat exchange liquid in the guide cover can be extended, thereby increasing the heat transfer time and improving the evaporation treatment effect of the Chinese medicine liquid.

[0017] (2) While exchanging heat with the Chinese medicine liquid, the motor can be turned on to drive the connecting shaft to rotate. When the connecting shaft rotates, it can drive the stirring rod to stir the Chinese medicine liquid, and at the same time drive the spiral liquid feeding plate to rotate, so that the Chinese medicine liquid at the bottom of the center of the vacuum heat exchange tank is transported upward and dispersed to the surrounding area, thereby promoting the movement of the Chinese medicine liquid in the vacuum heat exchange tank, so that the Chinese medicine liquid can evenly contact the inner wall of the vacuum heat exchange tank for heat exchange, making the overall temperature of the Chinese medicine liquid more uniform, reducing the temperature difference at different positions in the tank, and avoiding local overheating or overcooling.

[0018] (3) After the Chinese medicine is evaporated and concentrated, the sealing cover can be rotated to open the discharge pipe. At this time, under the action of the spring, the connecting sleeve can drive the linkage block 2 to be clamped between the two adjacent linkage blocks 1. Then, the motor can be turned on to drive the connecting shaft to rotate. The connecting shaft can drive the connecting sleeve and the spiral feeding piece to rotate through the cooperation of the linkage block 1 and the linkage block 2. The rotation of the spiral feeding piece can promote the discharge of the viscous Chinese medicine liquid from the discharge pipe, and the connecting shaft can drive the scraper to scrape the inner wall of the vacuum heat exchange tank, which can promote the Chinese medicine liquid attached to the inner wall of the vacuum heat exchange tank to flow downward quickly, thereby increasing the discharge speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of a low-temperature and low-pressure extraction device for traditional Chinese medicine components proposed by the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of a flow guide cover of a low-temperature and low-pressure extraction device for traditional Chinese medicine components proposed by the present invention;

[0021] Figure 3 This is a schematic diagram of the guide plate structure of a low-temperature and low-pressure extraction device for traditional Chinese medicine components proposed by the present invention;

[0022] Figure 4This is a schematic cross-sectional view of a low-temperature and reduced-pressure extraction device for Chinese medicinal ingredients proposed by the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of a flow guide tube of a low-temperature and reduced-pressure extraction device for traditional Chinese medicine components proposed by the present invention;

[0024] Figure 6 This is a schematic diagram of the connecting shaft structure of a low-temperature and low-pressure extraction device for traditional Chinese medicine components proposed by the present invention;

[0025] Figure 7 This is a schematic diagram of the cross-sectional structure of a connecting sleeve rod of a low-temperature and reduced-pressure extraction device for traditional Chinese medicine components proposed by the present invention.

[0026] In the figure: 100, vacuum heat exchange tank; 101, guide cover; 102, discharge pipe; 200, bracket; 201, vacuum pump; 202, suction pipe; 203, feeding pipe; 300, guide plate; 301, heat exchange infusion pipe; 302, heat exchange discharge pipe; 400, connecting shaft; 401, motor; 402, connecting rod; 403, stirring rod; 404, mounting bracket; 405, guide pipe; 406, through hole; 407, spiral liquid feeding plate; 408, diverter plate; 500, connecting sleeve rod; 501, spiral feeding plate; 502, fixing ring; 503, linkage block 1; 504, linkage block 2; 505, spring; 506, sealing cover; 507, scraper. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Example 1: Please refer to Figure 1-7 The present invention provides a technical solution: a low-temperature, reduced-pressure extraction device for traditional Chinese medicine ingredients, comprising a vacuum heat exchange tank 100; a flow guide hood 101 is fixedly sleeved on the vacuum heat exchange tank 100, a discharge pipe 102 is installed below the vacuum heat exchange tank 100, a bracket 200 is installed on the flow guide hood 101, a suction structure is connected to the bracket 200, a flow guide structure is connected inside the flow guide hood 101, a connecting shaft 400 is rotatably installed inside the vacuum heat exchange tank 100, a stirring structure is connected to the connecting shaft 400, a connecting sleeve rod 500 is movably sleeved on the connecting shaft 400, and the discharge structure is connected to the connecting sleeve rod 500.

[0029] Furthermore, the suction structure includes a vacuum pump 201, which is installed on the bracket 200. A suction pipe 202 is installed at the suction end of the vacuum pump 201. One end of the suction pipe 202 is installed above the vacuum heat exchange tank 100 and is connected to the vacuum heat exchange tank 100. A feeding pipe 203 is installed above the vacuum heat exchange tank 100. A sealing cover is detachably installed on the feeding pipe 203. The Chinese medicine liquid can be poured into the vacuum heat exchange tank 100 through the feeding pipe 203. By turning on the vacuum pump 201, the air in the vacuum heat exchange tank 100 can be extracted through the suction pipe 202, so that a vacuum is formed in the vacuum heat exchange tank 100, thereby lowering the boiling point of the Chinese medicine liquid.

[0030] Furthermore, the diversion structure includes a plurality of guide plates 300, which are evenly arranged between the guide cover 101 and the vacuum heat exchange tank 100. The space between two adjacent guide plates 300 forms a flow channel. The outer surface of the guide cover 101 is installed with a heat exchange infusion pipe 301 and a heat exchange drainage pipe 302. The heat exchange infusion pipe 301 and the heat exchange drainage pipe 302 are respectively connected to the corresponding flow channels. Water or other liquids of suitable temperature are transported to the inside of the guide cover 101 through the heat exchange infusion pipe 301. The liquid will pass through the flow channel formed between adjacent guide plates 300 and finally flow out from the heat exchange drainage pipe 302. During the process, the temperature of the heat exchange liquid will be transferred to the vacuum heat exchange tank 100, and then transferred to the traditional Chinese medicine liquid through the vacuum heat exchange tank 100, so that the traditional Chinese medicine liquid can boil and evaporate at a lower temperature, and the traditional Chinese medicine liquid is concentrated and extracted.

[0031] Example 2: Figure 1-6In order to promote the flow of Chinese medicine liquid in the vacuum heat exchange tank 100 and improve the heat exchange effect, a stirring structure is arranged. The stirring structure includes a motor 401. The motor 401 is installed above the vacuum heat exchange tank 100. The output end of the motor 401 is installed on the connecting shaft 400. Two connecting rods 402 are symmetrically installed on the connecting shaft 400. A number of stirring rods 403 are installed on the two connecting rods 402. A mounting bracket 404 is installed on the inner wall of the vacuum heat exchange tank 100. A guide pipe 405 is installed on the mounting bracket 404. A number of through holes 406 are opened at one end of the guide pipe 405. A spiral liquid feeding piece 407 is fixed on the connecting shaft 400. The spiral liquid feeding piece 407 is located inside the guide pipe 405. The spiral liquid feeding piece The sheet 407 contacts the inner wall of the guide tube 405. A diverter plate 408 is installed at one end of the guide tube 405. The diverter plate 408 is rotatably sleeved on the connecting shaft 400. The motor 401 is turned on to drive the connecting shaft 400 to rotate. The connecting shaft 400 can drive the connecting rod 402 and the stirring rod 403 to stir the Chinese medicine liquid in the vacuum heat exchange tank 100, so that the Chinese medicine liquid can be in uniform contact with the inner wall of the vacuum heat exchange tank 100 for heat exchange. When the connecting shaft 400 rotates, it can drive the spiral liquid feeding sheet 407 to rotate, and transport the liquid at the center bottom of the vacuum heat exchange tank 100 upward. The final rising Chinese medicine liquid is dispersed to the surroundings under the action of the diverter plate 408, further promoting the activity of the Chinese medicine liquid. The remaining features are the same as those in Example 1.

[0032] Example 3: Figure 4-7In order to prevent the viscous traditional Chinese medicine liquid from flowing slowly or causing blockage in the vacuum heat exchange tank 100, a discharging structure is arranged. The discharging structure includes a spiral feeding piece 501, which is fixedly sleeved on the connecting sleeve rod 500 and contacts the inner wall of the discharging pipe 102. A fixing ring 502 is fixedly sleeved on the connecting shaft 400, and a plurality of linkage card blocks 503 are installed on one side of the fixing ring 502. A plurality of linkage card blocks 504 are installed on the inner wall of the connecting sleeve rod 500. One end of a spring 505 is installed on the inner wall of the connecting sleeve rod 500, and the other end of the spring 505 contacts one side of the fixing ring 502. The spring 505 is movably sleeved on the connecting shaft 400. A sealing cover 506 is threadedly sleeved on the discharging pipe 102, and one end of the connecting sleeve rod 500 contacts the sealing cover 506. A scraper 507 is installed on one side of 402, and the scraper 507 contacts the inner wall of the vacuum heat exchange tank 100. The sealing cover 506 is rotated to open the discharge pipe 102. At this time, the compressed spring 505 will push the connecting sleeve 500 to move downward, so that the descending linkage block 2 504 is stuck between the two adjacent linkage blocks 1 503. At this time, driving the connecting shaft 400 to rotate again will drive the stuck linkage block 2 504 to rotate through the fixed ring 502 and the linkage block 1 503, and the linkage block 2 504 will drive the connecting sleeve 500 and the spiral feeding piece 501 to rotate. The rotation of the spiral feeding piece 501 can increase the discharge speed of the traditional Chinese medicine liquid to avoid blockage and sticking, and the rotation of the connecting rod 402 can drive the scraper 507 to scrape the inner wall of the vacuum heat exchange tank 100. The other features are the same as those in Example 2.

[0033] The working principle is as follows: pour the Chinese medicine liquid into the vacuum heat exchange tank 100 through the feeding pipe 203, and then use the sealing cover to block the feeding pipe 203. By turning on the vacuum pump 201, the air in the vacuum heat exchange tank 100 can be extracted through the suction pipe 202, so that a vacuum is formed in the vacuum heat exchange tank 100, thereby lowering the boiling point of the Chinese medicine liquid. At this time, water or other liquids of suitable temperature can be transported to the inside of the guide cover 101 through the heat exchange infusion pipe 301. The liquid will pass through the flow channel formed between the adjacent guide plates 300 and finally flow out from the heat exchange discharge pipe 302. During the process, the temperature of the heat exchange liquid will be transferred to the vacuum heat exchange tank 100, and then transferred to the Chinese medicine liquid through the vacuum heat exchange tank 100, so that the Chinese medicine liquid can boil and evaporate at a lower temperature. To concentrate and extract the Chinese medicinal liquid, the motor 401 can be turned on during the heat exchange process to drive the connecting shaft 400 to rotate. The connecting shaft 400 can drive the connecting rod 402 to rotate, thereby driving the stirring rod 403 to stir the Chinese medicinal liquid in the vacuum heat exchange tank 100, so that the Chinese medicinal liquid can be in uniform contact with the inner wall of the vacuum heat exchange tank 100 for heat exchange. When the connecting shaft 400 rotates, the spiral liquid feeding piece 407 can be driven to rotate. Part of the Chinese medicinal liquid can enter the guide tube 405 through the through hole 406 or the bottom of the guide tube 405. Under the continuous rotation of the spiral liquid feeding piece 407, the liquid at the center bottom of the vacuum heat exchange tank 100 can be transported upward. Finally, the rising Chinese medicinal liquid is dispersed to the surroundings under the action of the diverter plate 408, further promoting the flow of the Chinese medicinal liquid.

[0034] refer to Figure 4 and Figure 7When the connecting rod 400 is in the state of being compressed and storing energy, the spring 505 is in the state of being compressed and storing energy, and the linkage block 2 504 and the linkage block 1 503 are separated and do not contact each other. At this time, when the connecting shaft 400 rotates, it will drive the fixed ring 502 to rotate, and the fixed ring 502 will drive the linkage block 1 503 to rotate, and will not interfere with the connecting sleeve rod 500. After the evaporation and concentration of the traditional Chinese medicine liquid is completed, the sealing cover 506 can be rotated to open the discharge pipe 102. At this time, one end of the connecting sleeve rod 500 is no longer squeezed and blocked by the sealing cover 506, and the spring 505 in the compressed state will push the connecting sleeve rod 500 to move downward, and the connecting sleeve rod 500 will slide on the connecting shaft 400 and drive the linkage block 2 504 to descend, so that the descending linkage block 2 504 is stuck in the two adjacent linkages. The movable block 1 503 drives the connecting shaft 400 to rotate again at this time. The connecting shaft 400 will drive the engaged linkage block 2 504 to rotate through the fixed ring 502 and the linkage block 1 503. The linkage block 2 504 will drive the connecting sleeve 500 and the spiral feeding piece 501 to rotate. The concentrated Chinese medicine liquid will flow along the inclined surface of the inner wall of the vacuum heat exchange tank 100 toward the discharge pipe 102 and the spiral feeding piece 501. The rotation of the spiral feeding piece 501 can increase the discharge speed of the Chinese medicine liquid to avoid blockage and sticking. The rotation of the connecting rod 402 can drive the scraper 507 to scrape the inner wall of the vacuum heat exchange tank 100, thereby promoting the Chinese medicine liquid attached to the inner wall of the vacuum heat exchange tank 100 to quickly flow downward and discharge, which can assist in the discharge of viscous Chinese medicine liquid.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents. The circuits, electronic components and modules involved in the present invention are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the present invention does not involve improvements to software and methods.

Claims

1. A low-temperature, reduced-pressure extraction device for Chinese medicinal ingredients, comprising a vacuum heat exchange tank (100); characterized in that: A flow guide cover (101) is fixedly sleeved on the vacuum heat exchange tank (100), a discharge pipe (102) is installed below the vacuum heat exchange tank (100), a bracket (200) is installed on the flow guide cover (101), a suction structure is connected to the bracket (200), the interior of the flow guide cover (101) is connected to the flow guide structure, a connecting shaft (400) is rotatably installed inside the vacuum heat exchange tank (100), a stirring structure is connected to the connecting shaft (400), a connecting sleeve rod (500) is movably sleeved on the connecting shaft (400), and the discharge structure is connected to the connecting sleeve rod (500).

2. The low-temperature and low-pressure extraction device for Chinese medicinal ingredients according to claim 1, characterized in that: The suction structure comprises a vacuum pump (201), the vacuum pump (201) being mounted on a bracket (200), a suction pipe (202) being mounted on a suction end of the vacuum pump (201), one end of the suction pipe (202) being mounted above the vacuum heat exchange tank (100) and being in communication with the vacuum heat exchange tank (100), a feeding pipe (203) being mounted above the vacuum heat exchange tank (100), and a sealing cover being detachably mounted on the feeding pipe (203).

3. The low-temperature and low-pressure extraction device for Chinese medicinal ingredients according to claim 1, characterized in that: The flow guide structure comprises a plurality of flow guide plates (300), which are evenly arranged between the flow guide cover (101) and the vacuum heat exchange tank (100), and the space between two adjacent flow guide plates (300) forms a flow channel. A heat exchange infusion pipe (301) and a heat exchange drainage pipe (302) are installed on the outer surface of the flow guide cover (101), and the heat exchange infusion pipe (301) and the heat exchange drainage pipe (302) are respectively connected to the corresponding flow channels.

4. The low-temperature and low-pressure extraction device for Chinese medicinal ingredients according to claim 1, characterized in that: The stirring structure comprises a motor (401), which is installed above the vacuum heat exchange tank (100). The output end of the motor (401) is installed on a connecting shaft (400). Two connecting rods (402) are symmetrically installed on the connecting shaft (400), and a plurality of stirring rods (403) are installed on each of the two connecting rods (402).

5. The low-temperature and low-pressure extraction device for Chinese medicinal ingredients according to claim 4, characterized in that: The inner wall of the vacuum heat exchange tank (100) is mounted with a mounting frame (404), a guide tube (405) is mounted on the mounting frame (404), one end of the guide tube (405) is provided with a plurality of through holes (406), a spiral liquid-feeding piece (407) is fixedly sleeved on the connecting shaft (400), the spiral liquid-feeding piece (407) is located inside the guide tube (405), and the spiral liquid-feeding piece (407) is in contact with the inner wall of the guide tube (405).

6. The low-temperature and low-pressure extraction device for Chinese medicinal ingredients according to claim 5, characterized in that: A diverter plate (408) is installed at one end of the guide tube (405), and the diverter plate (408) is rotatably sleeved on the connecting shaft (400).

7. The low-temperature and low-pressure extraction device for Chinese medicinal ingredients according to claim 1, characterized in that: The discharging structure includes a spiral feeding piece (501), which is fixedly sleeved on the connecting sleeve rod (500) and contacts the inner wall of the discharging pipe (102). A fixing ring (502) is fixedly sleeved on the connecting shaft (400), and a plurality of linkage card blocks (503) are installed on one side of the fixing ring (502). A plurality of linkage card blocks (504) are installed on the inner wall of the connecting sleeve rod (500).

8. The low-temperature and low-pressure extraction device for Chinese medicinal ingredients according to claim 7, characterized in that: One end of a spring (505) is installed on the inner wall of the connecting sleeve rod (500), and the other end of the spring (505) is in contact with one side of the fixed ring (502). The spring (505) is movably sleeved on the connecting shaft (400), and a sealing cover (506) is threadedly sleeved on the discharge pipe (102), and one end of the connecting sleeve rod (500) is in contact with the sealing cover (506).

9. The low-temperature and low-pressure extraction device for Chinese medicinal ingredients according to claim 4, characterized in that: A scraper (507) is installed on one side of the connecting rod (402), and the scraper (507) is in contact with the inner wall of the vacuum heat exchange tank (100).

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