A traditional Chinese medicine grading extraction device

Abstract

The utility model relates to the technical field of fractional extraction, and particularly relates to a traditional Chinese medicinal material fractional extraction device, which comprises a support, a plurality of countercurrent extraction units are fixedly installed on the support, the countercurrent extraction units are vertically arranged from top to bottom, each countercurrent extraction unit comprises a first extraction tank and a second extraction tank, a feeding port is fixedly installed on the upper surface of the top of the first extraction tank, a main motor is fixedly installed at the center of the top of the first extraction tank, a transmission shaft is fixedly installed at the output end of the main motor, a plurality of stirring arms are fixedly installed in a tree branch shape at the middle of the transmission shaft, a connecting pipe is arranged at the bottom end of the first extraction tank, and a second extraction tank is fixedly installed at the lower end of the connecting pipe, the utility model is provided with a telescopic stirring head, when traditional Chinese medicinal materials are extracted, the main motor drives the transmission shaft to rotate at low speed, after the extraction is completed, the transmission shaft is reversely rotated at high speed, the stirring head can be extended by centrifugal force, and the traditional Chinese medicinal material debris remaining on the inner wall can be scraped down.

Description

Technical Field

[0001] This utility model relates to the field of graded extraction technology, and in particular to a graded extraction device for traditional Chinese medicinal materials. Background Technology

[0002] In the field of graded extraction of Chinese medicinal materials, the reverse extraction process has become a core technology widely used in the industry because it can prolong the action path and improve the dissolution efficiency of effective components through reverse contact between solvent and material.

[0003] Currently, reverse extraction equipment in the industry typically consists of multiple extraction tank components supported by a support frame. It generally includes an upper tank for feeding and extraction, and a connecting lower tank. The material mainly relies on its own gravity to complete the transfer between the upper and lower tanks. The overall equipment design is still at the level of meeting basic functions.

[0004] The cleaning of existing reverse extraction tanks mainly relies on manual shutdown for cleaning, lacking a real-time automatic cleaning mechanism. Some equipment is equipped with rigid scrapers to clean the medicinal residues adhering to the inner wall of the equipment, which increases the complexity of the equipment and is also prone to scratching the inner wall of the extraction tank. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a graded extraction device for Chinese medicinal materials, which can effectively solve the problems mentioned in the background technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: This utility model provides a graded extraction device for traditional Chinese medicine, including a support frame on which multiple reverse extraction units are fixedly installed. The reverse extraction units are arranged vertically from top to bottom. Each reverse extraction unit includes a first extraction tank and a second extraction tank. A feeding port is fixedly installed on the upper surface of the top of the first extraction tank. A main motor is fixedly installed at the center of the top of the first extraction tank. The output end of the main motor passes through the top of the first extraction tank and extends into the interior of the first extraction tank. A drive shaft is fixedly installed at the output end of the main motor. Several stirring arms are fixedly installed in a tree-like shape in the middle of the drive shaft. Two semi-circular sealing valves are rotatably connected to the lower side of the first extraction tank. A connecting pipe is provided at the bottom of the first extraction tank, and a second extraction tank is fixedly installed at the lower end of the connecting pipe.

[0007] Furthermore, the second extraction tank shares a drive shaft with the first extraction tank. Holes are opened on the left and right side walls at the lower ends of both the first and second extraction tanks, and electric valves are fixedly installed thereon. A reverse solvent pipe is fixedly installed between the left electric valves, and a water pump is fixedly installed in the middle of the reverse solvent pipe.

[0008] Furthermore, each end of the stirring arm is slidably connected to a stirring head, and the stirring head is connected to the inner cavity of the stirring arm by a spring.

[0009] Furthermore, a spiral cleaning head is fixedly installed at the end of the stirring head. The spiral cleaning head is set at an angle relative to the horizontal plane, and the top height of the lower spiral cleaning head is equal to the bottom height of the upper spiral cleaning head of the adjacent spiral cleaning heads.

[0010] Furthermore, a guide plate is fixedly installed on the inner side of the spiral cleaning head, and spiral conveying blades are fixedly installed on the outer periphery of the part of the drive shaft located in the connecting pipe.

[0011] Furthermore, a solvent storage tank is fixedly installed on the right side of the second extraction tank. The output end of the solvent storage tank is located above the semi-circular sealing valve. Valve motor assemblies are fixedly installed on the lower outer walls of both the first and second extraction tanks. The valve motor assemblies include two motors, each with a semi-circular sealing valve fixedly installed on its output shaft. A recovery tank is fixedly installed on the right side of the first extraction tank.

[0012] The beneficial effects of this utility model are: 1. This utility model is equipped with a retractable stirring head. When the Chinese medicinal materials are being extracted, the main motor drives the transmission shaft to rotate at low speed to promote the extraction effect. After the extraction is completed, the transmission shaft rotates in the opposite direction at high speed. Centrifugal force can be used to extend the stirring head so that the spiral cleaning head contacts the inner wall of the extraction tank and scrapes the remaining medicinal material debris on the inner wall downward.

[0013] 2. This utility model is also equipped with a spiral conveying blade. After the Chinese medicinal materials in the first extraction tank have undergone one round of extraction and the solvent has been emptied, the semi-circular sealing valve is opened, and the Chinese medicinal materials fall into the connecting pipe and are assisted by the spiral conveying blade to be transported to the second extraction tank, so as to avoid solid residue clogging the pipe. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the structure of a graded extraction device for traditional Chinese medicine.

[0015] Figure 2 This is a cross-sectional structural diagram of a traditional Chinese medicine graded extraction device according to the present invention.

[0016] Figure 3 This utility model relates to a graded extraction device for traditional Chinese medicinal materials. Figure 2 Schematic diagram of the structure at point A in the middle.

[0017] Figure 4This utility model relates to a graded extraction device for traditional Chinese medicinal materials. Figure 2 Schematic diagram of the structure at point B.

[0018] Explanation of reference numerals in the attached figures: 1. Support frame; 2. Reverse extraction unit; 3. First extraction tank; 4. Feed port; 5. Main motor; 6. Recovery tank; 7. Connecting pipe; 8. Second extraction tank; 9. Reverse solvent pipe; 10. Valve motor assembly; 11. Solvent storage tank; 12. Baffle plate; 13. Water pump; 14. Drive shaft; 15. Stirring arm; 16. Stirring head; 17. Spring; 18. Spiral cleaning head; 19. Semi-circular sealing valve; 20. Spiral conveying blades; 21. Electric valve. Detailed Implementation

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Example 1:

[0020] Reference Figure 1-3 This is the first embodiment of the present invention, which provides a traditional Chinese medicine graded extraction device including a support 1. Multiple reverse extraction units 2 are fixedly installed on the support 1. Each reverse extraction unit 2 is responsible for the extraction process of a certain solvent. The reverse extraction units 2 are arranged vertically from top to bottom. Each reverse extraction unit 2 includes a first extraction tank 3 and a second extraction tank 8. A feeding port 4 is fixedly installed on the upper surface of the top of the first extraction tank 3. Only the uppermost first extraction tank 3 has a feeding port 4. A main motor 5 is fixedly installed at the center of the top of the first extraction tank 3. The output end of the main motor 5 passes through the top of the first extraction tank 3 and extends to the first extraction tank 8. Inside the tank 3, a drive shaft 14 is fixedly installed at the output end of the main motor 5. Each drive shaft 14 can provide power to a group of reverse extraction units 2. Several stirring arms 15 are fixedly installed in the middle of the drive shaft 14 in a tree-like shape. Two semi-circular sealing valves 19 are rotatably connected to the lower side of the first extraction tank 3. During extraction, the semi-circular sealing valves 19 are closed, forming a sealed container on the upper part of the first extraction tank 3 and the second extraction tank 8. A connecting pipe 7 is provided at the bottom of the first extraction tank 3. The second extraction tank 8 is fixedly installed at the lower end of the connecting pipe 7. It is used to extract Chinese medicinal materials that have been extracted with high-concentration solvents and to perform a second extraction with low-concentration solvents.

[0021] The second extraction tank 8 shares a drive shaft 14 with the first extraction tank 3. The drive shaft 14 is equipped with corrosion-resistant mechanical seals at the positions where it passes through the bottom of the first extraction tank 3 and the top of the second extraction tank 8. Holes are opened on the left and right side walls at the lower ends of the first extraction tank 3 and the second extraction tank 8, and electric valves 21 are fixedly installed thereon. When the electric valves 21 are closed, the solvent and medicinal materials will not leak. A reverse solvent pipe 9 is fixedly installed between the left electric valves 21. A water pump 13 is fixedly installed in the middle of the reverse solvent pipe 9, which can draw the solvent from the lower layer to the upper layer through the reverse solvent pipe.

[0022] Each end of the stirring arm 15 is slidably connected to a stirring head 16. The stirring head 16 is connected to the inner cavity of the stirring arm 15 by a spring 17. When the stirring arm 15 rotates at low speed, the stirring head 16 retracts into the stirring arm 15 under the tension of the spring 17. When the stirring arm 15 rotates faster, the stirring head 16 overcomes the tension of the spring 17 and extends under the action of centrifugal force, and contacts the inner side wall of the first extraction tank 3 or the second extraction tank 8, thereby cleaning. Example 2:

[0023] Reference Figure 1-4 This is the second embodiment of the present invention, which differs from the first embodiment in that: A spiral cleaning head 18 is fixedly installed at the end of the stirring head 16. The spiral cleaning head 18 is set at an angle relative to the horizontal plane, and the top height of the lower spiral cleaning head 18 is equal to the bottom height of the upper spiral cleaning head 18, and they are on the same spiral line. When the upper spiral cleaning head 18 scrapes the residual medicine downward, it will be transported downward by the lower spiral cleaning head 18 to complete the transfer.

[0024] A guide plate 12 is fixedly installed on the inner side of the spiral cleaning head 18. During the extraction process, the guide plate 12 rotates slowly in the forward direction, continuously turning the mixture upward. A spiral conveying blade 20 is fixedly installed on the outer periphery of the drive shaft 14 located in the connecting pipe 7, which transports the Chinese medicinal materials to the second extraction tank 8 below to reduce residue.

[0025] A solvent storage tank 11 is fixedly installed on the right side of the second extraction tank 8. The output end of the solvent storage tank 11 is located above the semi-circular sealing valve 19. A valve motor assembly 10 is fixedly installed on the lower outer wall of both the first extraction tank 3 and the second extraction tank 8. The valve motor assembly 10 includes two motors, and a semi-circular sealing valve 19 is fixedly installed on the output shaft of each motor. The valve motor assembly 10 controls the opening and closing of the semi-circular sealing valve 19. When the semi-circular sealing valve 19 is closed, the two semi-circular sealing valves 19 combine to form a complete circle, sealing the bottom of the first extraction tank 3 and the second extraction tank 8, creating space for the extraction operation above. A recovery tank 6 is fixedly installed on the right side of the first extraction tank 3 for recovering the final extract after extraction.

[0026] The remaining structure is the same as that in Example 1.

[0027] The specific operating principle of this utility model is as follows: Herbal granules are fed into the uppermost first extraction tank 3 through the feeding port 4. The main motor 5 is started, driving the transmission shaft 14 and stirring arm 15 to rotate at low speed, promoting the mixing of the herbal granules and solvent in the tank. The solvent used for extraction is stored in the solvent storage tank 11 and is driven by the water pump 13 and transported through the countercurrent solvent pipe 9. The solvent flow path is opposite to the material falling path. Low-concentration fresh solvent is injected through the electric valve 21 on the side wall of the lower second extraction tank 8 and gradually permeates countercurrently to the upper first extraction tank 3. During this countercurrent contact process, the concentration of effective components in the herbal granules gradually decreases from top to bottom, while the concentration of effective components in the solvent gradually increases from bottom to top, achieving efficient mass transfer and fractional extraction.

[0028] When the drive shaft 14 drives the stirring arm 15 to rotate at low speed, the stirring head 16 retracts under the tension of the spring 17, only gently stirring the material and enhancing extraction. When the single-stage extraction is completed and the tank needs to be cleaned, the main motor 5 rotates in the opposite direction at high speed. Under the action of centrifugal force, the stirring head 16 overcomes the tension of the spring 17 and extends outward, so that the spiral cleaning head 18 at its end is in close contact with the inner wall of the tank. The inclined spiral cleaning head 18 rotates with the shaft, generating a downward component force, which continuously scrapes off the residue adhering to the tank wall and pushes it downward. The upper and lower adjacent spiral cleaning heads 18 adopt an interlaced layout to ensure full coverage of the cleaning range. The scraped residue is finally pushed to the bottom of the tank and discharged.

[0029] When extraction is completed in the first extraction tank 3, the electric valve 21 on one side of the recovery tank 6 opens, and the recovery tank 6 collects the final solution after extraction, waiting for further extraction. The valve motor unit 10 drives the two semi-circular sealing valves 19 to rotate and open, and the remaining Chinese herbal medicine particles fall into the connecting pipe 7 under the action of gravity. The spiral conveying blades 20 installed on the drive shaft 14 in the section of the connecting pipe 7 rotate synchronously, applying axial thrust to the falling material, assisting it to smoothly enter the second extraction tank 8 for the next stage of extraction, effectively avoiding the clogging problem that is prone to occur in traditional gravity feeding.

[0030] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A graded extraction device for traditional Chinese medicinal materials, comprising a support frame (1), characterized in that: Multiple reverse extraction units (2) are fixedly installed on the support (1). The reverse extraction units (2) are arranged vertically from top to bottom. Each reverse extraction unit (2) includes a first extraction tank (3) and a second extraction tank (8). A feeding port (4) is fixedly installed on the upper surface of the top of the first extraction tank (3). A main motor (5) is fixedly installed at the center of the top of the first extraction tank (3). The output end of the main motor (5) passes through the top of the first extraction tank (3) and extends into the interior of the first extraction tank (3). A drive shaft (14) is fixedly installed at the output end of the main motor (5). Several stirring arms (15) are fixedly installed in the middle of the drive shaft (14) in a tree-like shape. Two semi-circular sealing valves (19) are rotatably connected to the lower side of the first extraction tank (3). A connecting pipe (7) is provided at the bottom of the first extraction tank (3). The second extraction tank (8) is fixedly installed at the lower end of the connecting pipe (7).

2. The graded extraction device for traditional Chinese medicinal materials according to claim 1, characterized in that... The second extraction tank (8) shares a drive shaft (14) with the first extraction tank (3). The lower left and right side walls of the first extraction tank (3) and the second extraction tank (8) are provided with holes and electric valves (21) are fixedly installed. A reverse solvent pipe (9) is fixedly installed between the electric valves (21) on the left side. A water pump (13) is fixedly installed in the middle of the reverse solvent pipe (9).

3. The graded extraction device for traditional Chinese medicinal materials according to claim 1, characterized in that... The stirring arms (15) are all slidably connected to stirring heads (16), and the stirring heads (16) are connected to the inner cavity of the stirring arms (15) by springs (17).

4. The graded extraction device for traditional Chinese medicinal materials according to claim 3, characterized in that... The stirring head (16) is fixedly installed with a spiral cleaning head (18) at its end. The spiral cleaning head (18) is set obliquely relative to the horizontal plane, and the top height of the lower spiral cleaning head (18) of the upper and lower adjacent spiral cleaning heads (18) is equal to the bottom height of the upper spiral cleaning head (18).

5. The graded extraction device for traditional Chinese medicinal materials according to claim 4, characterized in that... A guide plate (12) is fixedly installed on the inner side of the spiral cleaning head (18), and a spiral conveying blade (20) is fixedly installed on the outer periphery of the part of the drive shaft (14) located in the connecting pipe (7).

6. The graded extraction device for traditional Chinese medicinal materials according to claim 2, characterized in that... A solvent storage tank (11) is fixedly installed on the right side of the second extraction tank (8). The output end of the solvent storage tank (11) is located on the upper side of the semi-circular sealing valve (19). A valve motor assembly (10) is fixedly installed on the lower outer wall of both the first extraction tank (3) and the second extraction tank (8). The valve motor assembly (10) includes two motors, and a semi-circular sealing valve (19) is fixedly installed on the output shaft of each motor. A recovery tank (6) is fixedly installed on the right side of the first extraction tank (3).

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