Salvia miltiorrhiza extraction process

Abstract

The present application relates to salvia miltiorrhiza extraction technical field, especially to a kind of salvia miltiorrhiza extraction process;The filter extraction device involved, the front end surface of the fixed frame is equipped with fixed plate, and the fixed plate is inverted N-shaped structure, and the horizontal section of fixed plate is equipped with ring block, and the upper portion of ring block is provided with extraction mechanism, and the lower portion of ring block is provided with pipeline, and the upper portion of pipeline is vertical section, and the middle portion of pipeline is arc section, and the lower portion of pipeline is inclined downward inclined section, and the vertical section of pipeline is evenly provided with support block connected with ring block along its axial direction, and the upper end surface of vertical section of pipeline is coaxially connected with the lower end surface of ring block, and filter mechanism is arranged in pipeline;The present application solves the problem of slow filtration of extract in the current salvia miltiorrhiza extraction process.

Description

Technical Field

[0001] This invention relates to the field of Salvia miltiorrhiza extraction technology, and in particular to a Salvia miltiorrhiza extraction process. Background Technology

[0002] Danshen extraction refers to the process of separating the effective active ingredients in Danshen, such as tanshinone, salvianolic acid B, and salvianolic acid A, from the Danshen plant tissue for use in the preparation of traditional Chinese medicine preparations, health products, drug research, and other related fields.

[0003] The manufacturing process of the traditional Chinese medicine preparation Danshen Qinggao is as follows: Danshen is decocted three times with water—the decoction is filtered—the filtrates are combined—the solution is concentrated under reduced pressure to an appropriate amount—ethanol is added for precipitation—the solution is allowed to stand—ethanol is added again for precipitation—the solution is allowed to stand—ethanol is recovered from the supernatant and concentrated under reduced pressure to an appropriate amount.

[0004] However, the current extraction process of Salvia miltiorrhiza has the following problems: the filtration process of the extract obtained by decocting Salvia miltiorrhiza relies solely on the gravity of the extract itself to pass through filter paper or other filter media. Due to the high viscosity of Salvia miltiorrhiza extract, it encounters greater resistance when passing through the filter media. Furthermore, since gravity is the only driving force, the extract is only subject to gravity when passing through the filter media. Because gravity is relatively weak, it cannot provide sufficient force to propel the extract through the filter media, resulting in a slow filtration speed. Summary of the Invention

[0005] In view of the above problems, this application provides an invention title to solve the technical problems such as slow filtration of extractant in related technologies.

[0006] To achieve the above objectives, the present application provides the following technical solution: The present application provides a process for extracting Salvia miltiorrhiza, including the following steps: S1, preparing Salvia miltiorrhiza materials: select Salvia miltiorrhiza slices of the required quality, wash them, and dry them to remove excess moisture.

[0007] S2. Extraction of Danshen components: Put the Danshen slices that have been washed and dried in S1 into a filter extraction device, add an appropriate amount of water in batches for soaking, and boil them for extraction.

[0008] S3, Filtration Extract: The extract from S2 above is filtered through a filtration extraction device to remove solid residues and obtain pure Salvia miltiorrhiza extract.

[0009] S4. Concentrated Extract: The purified Salvia miltiorrhiza extract from S3 above is evaporated to remove water, in order to obtain a high concentration of Salvia miltiorrhiza extract.

[0010] The filtration and extraction device involved in steps S2 and S3 above includes a fixed frame. A fixed plate is installed on the front end face of the fixed frame, and the fixed plate has an inverted U-shaped structure. A ring block is installed on the horizontal section of the fixed plate. An extraction mechanism is set above the ring block. A pipe is set below the ring block. The upper part of the pipe is a vertical section, the middle part of the pipe is an arc-shaped section, and the lower part of the pipe is an inclined section that slopes downward. Support blocks connected to the ring block are evenly arranged along the axial direction of the vertical section of the pipe. The upper end face of the vertical section of the pipe is coaxially connected to the lower end face of the ring block. A filtration mechanism is set inside the pipe.

[0011] The filtration mechanism includes a toothed ring, which is rotatably mounted inside the ring block. A stepper motor is mounted on the ring block, and the output end of the stepper motor extends into the ring block. The output shaft of the stepper motor is equipped with a spur gear that meshes with the toothed ring, and the spur gear rotates with the ring block. A filter cylinder is coaxially mounted on the inner side of the toothed ring, and the lower end of the filter cylinder extends into the vertical section of the pipe. An arc-shaped bottom cylinder is provided on the lower end face of the filter cylinder, and a base is provided below the arc-shaped bottom cylinder. The base is connected to the pipe through a support rod, and the base is slidably connected to the arc-shaped bottom cylinder. A cleaning unit is provided on the arc-shaped bottom cylinder.

[0012] As a preferred embodiment, the cleaning unit includes a shaft. The shaft is coaxially arranged inside the filter cylinder, with its lower end extending to the bottom of the arc-shaped bottom cylinder. The shaft and the arc-shaped bottom cylinder are rotatably engaged. The outer circumferential wall of the shaft inside the filter cylinder is evenly provided with bristles. A limit ring is coaxially arranged on the lower surface of the arc-shaped bottom cylinder, and the shaft and the limit ring are slidably engaged. A slot is opened at the lower end of the shaft. The outer circumferential wall of the shaft inside the limit ring is evenly provided with waist-shaped holes communicating with the slot along its circumferential direction. A drive unit for driving the shaft to move up and down and sucking up impurities in the filter cylinder is arranged below the shaft.

[0013] As a preferred embodiment, the extraction mechanism includes a liquid storage cylinder. The liquid storage cylinder is coaxially arranged above the filter cylinder, and the lower end of the liquid storage cylinder has an arc-shaped structure. The lower part of the liquid storage cylinder is connected to a ring block. Heaters are evenly arranged on the outer circumference of the liquid storage cylinder along its axial direction. A top plate is provided on the upper end face of the liquid storage cylinder, and the top plate has a fan-shaped structure. A stirring rod is provided inside the liquid storage cylinder, and the stirring rod is rotatably connected to the top plate. A liquid outlet hole is opened in the middle of the arc section of the liquid storage cylinder. An opening and closing unit for opening and closing the liquid outlet hole is provided below the liquid storage cylinder, and the opening and closing unit is connected to a shaft.

[0014] As a preferred embodiment, the opening and closing unit includes a cylindrical column. The cylindrical column is coaxially mounted on the lower surface of the liquid storage cylinder. The outer circumferential wall of the cylindrical column is uniformly provided with through holes along its circumferential direction. A T-shaped rod is provided on the lower end face of the cylindrical column. The vertical section of the T-shaped rod extends into the cylindrical column and slides with the cylindrical column. A sealing plate that mates with the liquid outlet is provided on the upper end face of the vertical section of the T-shaped rod. The lower end face of the T-shaped rod is connected to the shaft through a transition piece.

[0015] As a preferred embodiment, the drive unit includes a rotating shaft. The rotating shaft is located below the shaft rod, with both ends extending to the outside of the pipe and rotatably connected to the pipe. A circular groove is formed inside the rotating shaft, and a protrusion is provided on the rotating shaft. The protrusion has a hollow structure, and the circular groove communicates with the interior of the protrusion. A connecting pipe is symmetrically mounted on each of the protrusions on the left and right sides, and the connecting pipe communicates with the interior of the protrusion. A connecting rod is provided on the side of the connecting pipe away from the protrusion. A flow channel is formed in the middle of the connecting rod. A pipe body is provided at the end of the connecting rod away from the connecting pipe, and the pipe body and the connecting pipe are respectively connected to the corresponding flow channel end. A sphere is provided at the lower end of the shaft rod. The sphere has a hollow structure, and the interior of the sphere communicates with the groove hole. The pipe body communicates with the interior of the sphere, and the center of the sphere is located on the extension line of the axis of the pipe body.

[0016] As a preferred embodiment, the transition component includes a slide groove, the lower end face of the T-shaped rod is provided with a slide groove, the upper end face of the shaft is provided with a slider that slides with the slide groove, and a load-bearing spring is provided between the upper end face of the slider and the inner wall of the slide groove.

[0017] As a preferred embodiment, the liquid outlet has a frustum-shaped structure with a smaller top and a larger bottom, and the outer wall of the sealing plate has an inclined surface that matches the inner wall of the liquid outlet.

[0018] The above-described one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

[0019] I. The filtration mechanism of this invention accelerates the filtration effect through centrifugal force. The driving force it provides is greater than that of relying solely on the gravity of the extract. It can quickly pass the extract through the filter medium, thereby shortening the filtration time and improving work efficiency. Furthermore, centrifugal filtration of the extract can effectively separate suspended solids and fixed particles in the extract to obtain a clearer extract, thereby improving the purity and quality of the product.

[0020] Second, the drive unit of this invention achieves the sealing and opening / closing of the liquid outlet hole and the connection and sealing of the waist-shaped hole and the arc-shaped bottom cylinder through the segmented rotation of the rotating shaft. This enables both the release of the extract and the sealing of the storage cylinder, as well as the cleaning of impurities in the filter cylinder to ensure processing quality. This method is simple and easy to operate, and saves space and cost.

[0021] Third, the cleaning unit of this invention uses the rotation of the filter cylinder to make the bristles sweep across its inner wall. The bristles sweep the impurities on the inner wall to the arc-shaped bottom cylinder. The arc-shaped structure of the arc-shaped bottom cylinder causes the impurities to gather in the middle of the arc-shaped bottom cylinder. Then, through the waist-shaped hole connected to the arc-shaped bottom cylinder, the impurities that have fallen into the arc-shaped bottom cylinder are sucked out, thereby ensuring the cleanliness of the inside of the filter cylinder, and thus ensuring the filtration rate and filtration quality of the extract.

[0022] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figure 1 This is a process flow diagram for this application.

[0025] Figure 2 This is a three-dimensional structural diagram of the present application (a portion of the fixing frame is shown).

[0026] Figure 3 for Figure 2 First-person sectional view (without the mounting bracket).

[0027] Figure 4 For this Figure 2 Second-view sectional view (without the mounting bracket).

[0028] Figure 5 for Figure 3 Enlarged view of the structure at point A in the middle.

[0029] Figure 6 for Figure 4 Enlarged view of the structure at point B in the middle.

[0030] Figure 7 This is a schematic diagram of the drive unit structure of this application.

[0031] Figure label:

[0032] 10. Fixing frame; 11. Fixing plate; 12. Ring block; 13. Pipe; 14. Support block; 2. Filtering mechanism; 20. Gear ring; 21. Stepper motor; 22. Spur gear; 23. Filter cylinder; 24. Arc-shaped bottom cylinder; 4. Cleaning unit; 40. Shaft; 41. Brush bristles; 42. Limiting ring; 43. Slot; 44. Waist-shaped hole; 5. Drive unit; 50. Rotating shaft; 51. Circular groove; 52. Protrusion; 53. Connecting pipe; 54. Connecting rod; 55. Flow channel; 56. Pipe body; 6. Transition piece; 60. Slide groove; 61. Slider; 62. Load-bearing spring; 3. Extraction mechanism; 30. Liquid storage cylinder; 31. Heater; 32. Top plate; 33. Stirring rod; 34. Liquid outlet hole; 7. Opening and closing unit; 70. Cylinder column; 71. Through hole; 72. T-shaped rod; 73. Sealing plate. Detailed Implementation

[0033] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] like Figure 1 , Figure 2 and Figure 3 As shown, a process for extracting Salvia miltiorrhiza includes the following steps: S1, preparing Salvia miltiorrhiza materials: select Salvia miltiorrhiza slices of the required quality, wash them, and air dry them to remove excess moisture.

[0035] S2. Extraction of Danshen components: Put the Danshen slices that have been washed and dried in S1 into the storage cylinder 30, and add an appropriate amount of water to the storage cylinder 30 in batches for boiling and extraction. The boiling process should be repeated three times before and after adding water.

[0036] S3, Filtration of extract: The extract obtained from each boiling in S2 above will flow into the filter cylinder 23. The filter cylinder 23 rotates and uses centrifugal force to filter the extract and remove solid residues to obtain pure Salvia miltiorrhiza extract.

[0037] S4. Concentrated Extract: The purified Salvia miltiorrhiza extract from S3 above is evaporated to remove water, in order to obtain a high concentration of Salvia miltiorrhiza extract.

[0038] The filtration and extraction device involved in steps S2 and S3 includes a fixed frame 10. A fixed plate 11 is installed on the front end face of the fixed frame 10, and the fixed plate 11 has an inverted U-shaped structure. A ring block 12 is installed on the horizontal section of the fixed plate 11. An extraction mechanism 3 is arranged above the ring block 12. A pipe 13 is arranged below the ring block 12. The upper part of the pipe 13 is a vertical section, the middle part of the pipe 13 is an arc-shaped section, and the lower part of the pipe 13 is an inclined section that slopes downward. Support blocks 14 connected to the ring block 12 are evenly arranged along the axial direction of the vertical section of the pipe 13. The upper end face of the vertical section of the pipe 13 is coaxially connected to the lower end face of the ring block 12. A filtration mechanism 2 is arranged inside the pipe 13.

[0039] like Figure 2 , Figure 3 and Figure 4As shown, the extraction mechanism 3 includes a liquid storage cylinder 30. The liquid storage cylinder 30 is coaxially arranged above the filter cylinder 23, and the lower end of the liquid storage cylinder 30 has an arc-shaped structure. The lower part of the liquid storage cylinder 30 is connected to the ring block 12. Heaters 31 are evenly arranged on the outer circumference of the liquid storage cylinder 30 along its axial direction. A top plate 32 is provided on the upper end face of the liquid storage cylinder 30, and the top plate 32 has a fan-shaped structure. A stirring rod 33 is provided inside the liquid storage cylinder 30, and the stirring rod 33 is rotatably connected to the top plate 32. A liquid outlet hole 34 is opened in the middle of the arc section of the liquid storage cylinder 30. An opening and closing unit 7 for opening and closing the liquid outlet hole 34 is provided below the liquid storage cylinder 30, and the opening and closing unit 7 is connected to the shaft 40.

[0040] like Figure 3 , Figure 4 and Figure 5 As shown, the opening and closing unit 7 includes a cylindrical column 70. The cylindrical column 70 is coaxially mounted on the lower surface of the liquid storage cylinder 30. The outer circumferential wall of the cylindrical column 70 is uniformly provided with through holes 71 along its circumferential direction. A T-shaped rod 72 is provided on the lower end face of the cylindrical column 70. The vertical section of the T-shaped rod 72 extends into the cylindrical column 70 and slides with the cylindrical column 70. A sealing plate 73 that cooperates with the liquid outlet hole 34 is provided on the upper end face of the vertical section of the T-shaped plate. The lower end face of the T-shaped rod 72 is connected to the shaft 40 through the transition piece 6.

[0041] In practice, a measured amount of cleaned and dried Danshen slices are manually placed into the storage cylinder 30, and appropriate amounts of water are added for soaking. During the soaking process, the heater 31 heats the water inside the storage cylinder 30 to promote the dissolution of the active ingredients in Danshen into the water, heating the water in the storage cylinder 30 to 92℃-95℃. While the water in the storage cylinder 30 is being heated, an external motor mounted on the top plate 32 drives the stirring rod 33. The external motor rotates the stirring rod 33, which stirs the water and Danshen slices in the storage cylinder 30 to increase the interaction between the Danshen slices and the water. Contact between the components promotes the extraction process; once the water temperature reaches the required level, the time is recorded. After maintaining a gentle boil for 1.5 hours, the drive unit 5 moves the T-shaped rod 72 downwards. During the downward movement of the T-shaped rod 72, the sealing plate 73 is pulled down, creating a gap between the sealing plate 73 and the liquid outlet 34. The extract flows out from the gap between the sealing plate 73 and the liquid outlet 34, and then falls into the filter mechanism 2 through the through hole 71 for filtration. The above steps are repeated three times for water injection and boiling extraction. The three extracts are filtered through the filter mechanism 2 in sequence. The three filtered extracts are combined for subsequent concentration and other processing operations.

[0042] like Figure 5As shown, the liquid outlet 34 has a frustum-shaped structure with a smaller top and a larger bottom, and the outer wall of the sealing plate 73 is an inclined surface that matches the inner wall of the liquid outlet 34. In actual operation, the frustum-shaped structure of the liquid outlet 34 and the sealing plate 73 fit tightly together, which can effectively prevent liquid leakage during the boiling and extraction process of Salvia miltiorrhiza inside the liquid storage cylinder 30.

[0043] like Figure 3 and Figure 4 As shown, the filter mechanism 2 includes a toothed ring 20, which is rotatably mounted inside the ring block 12. A stepper motor 21 is mounted on the ring block 12, and the output end of the stepper motor 21 extends into the ring block 12. A spur gear 22 that meshes with the toothed ring 20 is mounted on the output shaft of the stepper motor 21, and the spur gear 22 rotates with the ring block 12. A filter cylinder 23 is coaxially mounted on the inner side of the toothed ring 20. The lower end of the filter cylinder 23 extends into the vertical section of the pipe 13. An arc-shaped bottom cylinder 24 is provided on the lower end face of the filter cylinder 23. A base is provided below the arc-shaped bottom cylinder 24, and the base has a frustum-shaped structure. The base is connected to the pipe 13 through a support rod, and the base is slidably connected to the arc-shaped bottom cylinder 24. A cleaning unit 4 is provided on the arc-shaped bottom cylinder 24.

[0044] like Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, the drive unit 5 includes a rotating shaft 50. The rotating shaft 50 is located below the shaft 40, with both ends extending to the outside of the pipe 13. The rotating shaft 50 is rotatably connected to the pipe 13. A circular groove 51 is formed inside the rotating shaft 50, and a protrusion 52 is provided on the rotating shaft 50. The protrusion 52 has a hollow structure, and the circular groove 51 communicates with the interior of the protrusion 52. A connecting pipe 53 is symmetrically mounted on each of the protrusions of the protrusion 52, and the connecting pipe 53 communicates with the interior of the protrusion 52. A connecting rod 54 is provided on the side of 53 away from the protrusion 52. A flow channel 55 is opened in the middle of the connecting rod 54. A tube body 56 is provided at the end of the connecting rod 54 away from the connecting pipe 53. The tube body 56 and the connecting pipe 53 are respectively connected to the end of the corresponding flow channel 55. A ball is provided at the lower end of the shaft 40. The ball has a hollow structure. The inside of the ball is connected to the slot 43. The tube body 56 is connected to the inside of the ball. The center of the ball is located on the extension line of the axis of the tube body 56. A transition piece 6 is provided between the shaft 40 and the T-shaped rod 72.

[0045] In operation, the external second motor is mounted on the fixed plate 11. The external second motor and the right end of the rotating shaft 50 are driven by an external gear. The rotation of the external second motor drives the rotating shaft 50 to rotate via the external gear. The rotation of the rotating shaft 50 pulls the connecting rod 54 downwards via the protrusion 52. The downward movement of the connecting rod 54 drives the T-shaped rod 72 downwards via the shaft 40. The downward movement of the T-shaped rod 72 then moves the sealing plate 73, creating a gap between the sealing plate 73 and the liquid outlet 34. The extract then flows through this gap into the filter cylinder 23 and the arc-shaped bottom cylinder 24 until all the extract from this boiling process has flowed into the filter cylinder 23 and the arc-shaped bottom cylinder 24. Afterwards, the external second motor drives the shaft 40 to reverse direction via the external gear. The reverse rotation of the shaft 40 pushes it upwards via the protrusion 52. The shaft 40 moves upward, pushing the T-shaped rod 72. The T-shaped rod 72 then pushes the sealing plate 73 to seal the liquid outlet 34. At this time, the liquid storage cylinder 30 is boiled with water for a second time. Meanwhile, the stepper motor 21 drives the gear ring 20 to rotate through the spur gear 22. The gear ring 20 then drives the filter cylinder 23 and the arc-shaped bottom cylinder 24 to rotate. During the rotation of the filter cylinder 23 and the arc-shaped bottom cylinder 24, the extract inside them is flung, thereby accelerating the rate at which the extract passes through the filter cylinder 23 to the pipeline 13 for filtration through centrifugal force. The filtered extract flows out through the pipeline 13 to the next process for further processing. The impurities generated after the filter cylinder 23 filters the extract will remain inside the filter cylinder 23. During the rotation of the filter cylinder 23, the cleaning unit 4 will remove the impurities from the filter cylinder 23.

[0046] like Figure 3 and Figure 4 As shown, the cleaning unit 4 includes a shaft 40. The shaft 40 is coaxially arranged inside the filter cylinder 23. The lower end of the shaft 40 extends to the bottom of the arc-shaped bottom cylinder 24, and the shaft 40 and the arc-shaped bottom cylinder 24 are rotatably engaged. The outer circumferential wall of the shaft 40 inside the filter cylinder 23 is evenly provided with bristles 41. The lower surface of the arc-shaped bottom cylinder 24 is coaxially provided with a limiting ring 42, and the shaft 40 and the limiting ring 42 are slidably engaged. The lower end of the shaft 40 is provided with a slot 43. The outer circumferential wall of the shaft 40 inside the limiting ring 42 is evenly provided with waist-shaped holes 44 communicating with the slot 43 along its circumferential direction. A drive unit 5 is provided below the shaft 40 for driving the shaft 40 to move up and down and sucking up impurities in the filter cylinder 23.

[0047] like Figure 4 and Figure 5 As shown, the transition piece 6 includes a slide groove 60. The lower end face of the T-shaped rod 72 is provided with the slide groove 60. The upper end face of the shaft 40 is provided with a slider 61 that slides with the slide groove 60. A load-bearing spring 62 is provided between the upper end face of the slider 61 and the inner wall of the slide groove 60.

[0048] In operation, the external No. 2 motor drives the rotating shaft 50 to rotate at an appropriate angle via the external gear, causing the protrusion 52 to push the shaft 40 upward. The shaft 40 first pushes the sealing plate 73 to fit tightly against the liquid outlet 34 via the load-bearing spring 62 and the T-shaped rod 72. The upper end face of the horizontal section of the T-shaped rod 72 fits against the lower end face of the cylinder 70. When it is necessary to remove impurities from the filter cylinder 23, the rotating shaft 50 continues to rotate, and the protrusion 52 pushes the shaft 40 upward again. Since the upper end face of the horizontal section of the T-shaped rod 72 fits against the lower end face of the cylinder 70, the shaft 40 will compress the load-bearing spring 62 and move upward. The upward movement of the shaft 40 will connect the waist-shaped hole 44 with the interior of the arc-shaped bottom cylinder 24. At this time, the stepper motor 21 drives the gear ring 20 to rotate via the spur gear 22. The ring 20 drives the filter cylinder 23 to rotate slowly. During the rotation of the filter cylinder 23, its inner wall will come into contact with the bristles 41, causing the impurities on its inner wall to fall into the arc-shaped bottom cylinder 24. Since the arc-shaped bottom cylinder 24 is an arc-shaped structure, the impurities will gather in the middle. At this time, the external suction machine is connected to the right end of the rotating shaft 50 through the external air pipe. The external suction machine sucks air, causing the impurities in the arc-shaped bottom cylinder 24 to be sucked into the slot hole 43 through the waist-shaped hole 44. The impurities pass through the tube column, the flow channel 55, and the connecting pipe 53 in sequence to reach the circular groove 51. Under the adsorption of the suction machine, the impurities are sucked from the circular groove 51 into the external air pipe and finally sucked out for centralized treatment, thereby ensuring the cleanliness of the filter cylinder 23 and avoiding clogging, thus ensuring the filtration rate and filtration quality of the extract.

[0049] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0050] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0051] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0052] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A process for extracting Salvia miltiorrhiza, characterized in that: Includes the following steps: S1. Prepare Danshen materials: Select Danshen slices of the required quality, wash them, and air dry them to remove excess moisture; S2. Extraction of Danshen components: Put the Danshen slices that have been washed and dried in S1 into a filter extraction device, add an appropriate amount of water in batches for soaking, and boil them for extraction. S3, Filtration extract: The extract from S2 above is filtered through a filtration extraction device to remove solid residues and obtain pure Salvia miltiorrhiza extract. S4. Concentrated extract: The purified tanshinone extract from S3 above is evaporated to remove water in order to obtain a high concentration of tanshinone extract. The filtration and extraction device involved in steps S2 and S3 above includes a fixed frame, a fixed plate installed on the front end face of the fixed frame, and the fixed plate has an inverted U-shaped structure. A ring block is installed on the horizontal section of the fixed plate. An extraction mechanism is set above the ring block. A pipe is set below the ring block. The upper part of the pipe is a vertical section, the middle part of the pipe is an arc-shaped section, and the lower part of the pipe is an inclined section that slopes downward. Support blocks connected to the ring block are evenly arranged along the axial direction of the vertical section of the pipe. The upper end face of the vertical section of the pipe is coaxially connected to the lower end face of the ring block. A filtration mechanism is set inside the pipe. The filtration mechanism includes a toothed ring, which is rotatably mounted inside the ring block. A stepper motor is mounted on the ring block, and the output end of the stepper motor extends into the ring block. The output shaft of the stepper motor is equipped with a spur gear that meshes with the toothed ring, and the spur gear rotates with the ring block. A filter cylinder is coaxially mounted on the inner side of the toothed ring, and the lower end of the filter cylinder extends into the vertical section of the pipe. An arc-shaped bottom cylinder is provided on the lower end face of the filter cylinder, and a base is provided below the arc-shaped bottom cylinder. The base has a frustum-shaped structure and is connected to the pipe through a support rod. The base is slidably connected to the arc-shaped bottom cylinder, and a cleaning unit is provided on the arc-shaped bottom cylinder. The cleaning unit includes a shaft. The shaft is coaxially arranged inside the filter cylinder. The lower end of the shaft extends to the bottom of the arc-shaped bottom cylinder and is rotatably engaged with the arc-shaped bottom cylinder. The outer circumferential wall of the shaft inside the filter cylinder is evenly provided with bristles. A limit ring is coaxially arranged on the lower surface of the arc-shaped bottom cylinder and is slidably engaged with the shaft. A slot is opened at the lower end of the shaft. The outer circumferential wall of the shaft inside the limit ring is evenly provided with waist-shaped holes communicating with the slot along its circumferential direction. A drive unit for driving the shaft to move up and down and sucking up impurities in the filter cylinder is arranged below the shaft. The drive unit includes a rotating shaft. The rotating shaft is located below the shaft rod, and both ends of the rotating shaft extend to the outside of the pipe and are rotatably connected to the pipe. A circular groove is opened inside the rotating shaft, and a protrusion is provided on the rotating shaft. The protrusion has a hollow structure, and the circular groove communicates with the interior of the protrusion. A connecting pipe is symmetrically mounted on each of the protrusions on the left and right sides, and the connecting pipe communicates with the interior of the protrusion. A connecting rod is provided on the side of the connecting pipe away from the protrusion. A flow channel is opened in the middle of the connecting rod. A pipe body is provided at the end of the connecting rod away from the connecting pipe, and the pipe body and the connecting pipe are respectively connected to the corresponding flow channel end. A ball is provided at the lower end of the shaft rod. The ball has a hollow structure, and the interior of the ball communicates with the groove hole. The pipe body communicates with the interior of the ball, and the center of the ball is located on the extension line of the axis of the pipe body.

2. The extraction process for Salvia miltiorrhiza according to claim 1, characterized in that: The extraction mechanism includes a liquid storage cylinder. The liquid storage cylinder is coaxially arranged above the filter cylinder, and the lower end of the liquid storage cylinder has an arc-shaped structure. The lower part of the liquid storage cylinder is connected to a ring block. Heaters are evenly arranged on the outer circumference of the liquid storage cylinder along its axial direction. A top plate is provided on the upper end face of the liquid storage cylinder, and the top plate has a fan-shaped structure. A stirring rod is provided inside the liquid storage cylinder, and the stirring rod is rotatably connected to the top plate. A liquid outlet hole is opened in the middle of the arc section of the liquid storage cylinder. An opening and closing unit for opening and closing the liquid outlet hole is provided below the liquid storage cylinder, and the opening and closing unit is connected to a shaft.

3. The extraction process for Salvia miltiorrhiza according to claim 2, characterized in that: The opening and closing unit includes a cylindrical column. The cylindrical column is coaxially mounted on the lower surface of the liquid storage cylinder. The outer circumferential wall of the cylindrical column is uniformly provided with through holes along its circumferential direction. A T-shaped rod is provided on the lower end face of the cylindrical column. The vertical section of the T-shaped rod extends into the cylindrical column and slides with the cylindrical column. A sealing plate that mates with the liquid outlet is provided on the upper end face of the vertical section of the T-shaped rod. The lower end face of the T-shaped rod is connected to the shaft through a transition piece.

4. The extraction process for Salvia miltiorrhiza according to claim 3, characterized in that: The transition component includes a slide groove. The lower end face of the T-shaped rod is provided with a slide groove, and the upper end face of the shaft is provided with a slider that slides in cooperation with the slide groove. A load-bearing spring is provided between the upper end face of the slider and the inner wall of the slide groove.

5. The extraction process for Salvia miltiorrhiza according to claim 3, characterized in that: The liquid outlet has a frustum-shaped structure with a smaller top and a larger bottom, and the outer wall of the sealing plate is an inclined surface that matches the inner wall of the liquid outlet.

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