Device and method for extracting coumarin from Fructus Cnidium monnieri

Abstract

The present invention relates to the technical field of extraction devices, and discloses a coumarin extraction device and method of Cnidium monnieri, including an equipment support, a screw conveyor for stirring a coumarin precipitate solution is fixedly installed on the top of the equipment support, and also includes: a separation box, the separation box is fixedly installed on one side of the equipment support, and a material guide trough is fixedly installed on the top of the separation box. The present invention sets a material guide trough and an intermittent material taking block, and the intermittent material taking block can block the material guide trough through the arc surface, so that the coumarin precipitate solution passes through the second screen for the first solid-liquid separation, and the intermittent material taking block is rotated to receive a part of the coumarin precipitate that has undergone the first solid-liquid separation through the material taking cavity, so that it is transported to the surface of the first screen for the second solid-liquid separation, so that the coumarin precipitate and the liquid are separated more thoroughly, which is convenient for the subsequent process.

Description

Technical Field

[0001] The invention relates to the technical field of extraction devices, and in particular to a device and method for extracting coumarin from Cnidium monnieri. Background Art

[0002] The Chinese herbal medicine Cnidium monnieri is the dried mature fruit of the plant Cnidium monnieri of the genus Cnidium of the family Apiaceae. It has the effects of drying dampness and dispelling wind, killing insects and relieving itching, warming the kidney and strengthening yang. It is clinically used for vaginal itching and leucorrhea, eczema itching, dampness and low back pain, kidney deficiency and impotence, uterine cold and infertility and other diseases. The effective ingredients of Cnidium monnieri can be divided into coumarins and volatile oils, among which coumarin components are the main components showing physiological activity of Cnidium monnieri. At present, there are mainly six monomer compounds isolated from Cnidium monnieri coumarins, including osthole, euphorin B, bergamot lactone, isosaxifragin, fennel phenol, fennel toxin and so on. Modern pharmacological experiments show that the total coumarins of Cnidium monnieri have multiple biological activities such as anti-inflammatory, antioxidant, anti-mutagenic, anti-tumor and antibacterial, so the total coumarins of Cnidium monnieri have broad application prospects in clinical practice.

[0003] A coumarin extraction device and its use method in the prior art (Announcement No.: CN111569465B) separates coumarin precipitate from pure water through a spiral solid-liquid separator. However, after the coumarin precipitate and pure water are squeezed to the discharge ring, they are easily dropped onto the conveyor belt together, and the solid-liquid separation is not thorough enough. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a device and method for extracting coumarin from Fructus Cnidium.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A coumarin extraction device for Cnidium monnieri, comprising an equipment support, a screw conveyor for stirring a coumarin precipitate solution is fixedly installed on the top of the equipment support, and further comprising:

[0007] A separation box, the separation box is fixedly installed on one side of the equipment bracket, a guide trough is fixedly installed on the top of the separation box, the guide trough is used to guide the coumarin precipitate solution discharged from the outlet of the screw conveyor and perform the first solid-liquid separation on it, a drainage plate and a support block are fixedly installed in the separation box, a first screen is fixedly installed on the top of the support block, one side of the separation box is an open structure, and an inspection cover is sealed in the opening of the separation box;

[0008] Intermittent material taking block, the intermittent material taking block is rotatably installed in the separation box, the intermittent material taking block is in a cylindrical structure, a plurality of material taking cavities are evenly arranged on the circumferential surface of the intermittent material taking block, an extrusion mechanism is arranged in each material taking cavity, and the intermittent material taking block intermittently承接 the coumarin precipitate discharged from the material guiding groove during rotation and pushes it to the surface of the first screen for solid-liquid separation again;

[0009] Feeding mechanism, the feeding mechanism is arranged below the first screen, and the feeding mechanism is used to send out the coumarin precipitate after solid-liquid separation from the separation box.

[0010] As a further scheme of the present invention, a support groove for installing a screw conveyor is arranged at the top of the material guiding groove, a discharge channel penetrating the outer surface is arranged at the bottom of the material guiding groove, the discharge end of the screw conveyor is embedded in the discharge channel, a drainage channel communicated with the discharge channel is arranged on one side of the material guiding groove, and a second screen is fixedly installed between the drainage channel and the discharge channel.

[0011] As a further scheme of the present invention, an arc-shaped notch adapted to the outer diameter of the intermittent material taking block is arranged at the bottom of the material guiding groove, a maintenance cavity is arranged on one side of the intermittent material taking block, a block in a polygonal columnar structure is fixedly installed at the center of the maintenance cavity, a transfer block is fixedly installed in the open mouth of the maintenance cavity, a driving pulley is fixedly installed at the center of the side of the transfer block away from the intermittent material taking block, and a round hole adapted to the transfer block is arranged on the surface of the maintenance cover plate.

[0012] As a further scheme of the present invention, the extrusion mechanism includes an extrusion block, the periphery of the extrusion block abuts against the material taking cavity and is slidably installed in the material taking cavity, a guide rod is fixedly installed on one side of the extrusion block close to the maintenance cavity, a plug block is fixedly installed at one end of the guide rod, a damping spring is fixedly installed on one side of the plug block close to the guide rod, the damping spring is sleeved on the surface of the guide rod and the end part thereof is fixedly installed with the intermittent material taking block, and a through hole adapted to the guide rod is arranged between each material taking cavity and the maintenance cavity.

[0013] As a further scheme of the present invention, a plurality of drainage grooves are arranged at the top of the support block, the bottom of the support block is arranged in a U-shaped structure with an opening facing downwards, and windows are arranged on one side of the support block and the separation box.

[0014] As a further scheme of the present invention, the feeding mechanism includes a plurality of bearing brackets, a driving belt roller and a driven belt roller, the driving belt roller and the driven belt roller are rotatably installed between corresponding two bearing brackets at both ends, a feeding belt is sleeved between the driving belt roller and the driven belt roller, the feeding belt passes through the two windows, each bearing bracket is fixedly installed on the surface of the equipment bracket, a water tank for collecting separated water is fixedly installed at the bottom of the equipment bracket, the top of the water tank is in an open structure, and a drainage port communicated with the water tank is arranged at the bottom of the separation box.

[0015] As a further solution of the present invention, a cleaning brush with a cylindrical structure is provided at the bottom of the support block, and the cleaning brush is rotatably installed between two bearing brackets, and the bristles of the cleaning brush are in contact with the surface of the feed belt. A driven pulley, a first driven gear and a second driven gear are rotatably installed on the surface of the inspection cover, a belt is sleeved between the driven pulley and the driving pulley, and a driving gear is fixedly installed at the center of one side of the driven pulley, the driving gear is meshed with the first driven gear, and the first driven gear is meshed with the second driven gear, one side of the first driven gear is fixedly installed with the rotation center of the driving belt roller through a connecting shaft, and one side of the second driven gear is also fixedly installed with the rotation center of the cleaning brush through a connecting shaft, a protective cover is fixedly installed on one side of the inspection cover, a servo motor is fixedly installed on the surface of the protective cover, and the output end of the servo motor is fixedly installed with the rotation center of one side of the driving pulley through a connecting shaft.

[0016] A method for using a coumarin extraction device of Cnidium monnieri, comprising the following steps:

[0017] Step 1: First, add the coumarin precipitate solution into the screw conveyor so that it is conveyed to the separation box during the stirring process, and first conveyed to the guide trough. At this time, the arc surface of the intermittent material block is against the bottom of the guide trough to block the discharge channel, and the servo motor is set to start intermittently. The coumarin precipitate solution is first temporarily stored in the discharge channel and passes through the second screen for the first solid-liquid separation. As the screw conveyor continuously conveys the material to the discharge channel, the materials are squeezed against each other to discharge water. The separated water enters the drainage channel through the second screen, and then flows to the drainage port through the drainage plate, and finally enters the water tank;

[0018] Step 2: Then the servo motor starts to drive the intermittent material taking block to rotate counterclockwise, so that the material taking cavity faces the discharge channel, and receives the coumarin precipitate after the solid-liquid separation. The servo motor continues to rotate to transfer the received material to the first screen. During the transfer process, the extrusion mechanism, under the action of gravity and centrifugal force, pushes the material completely to the surface of the first screen and performs a second extrusion on it to further perform solid-liquid separation;

[0019] Step 3: After the secondary solid-liquid separation, the coumarin precipitate slides to the surface of the feeding belt through the first screen, and is transported out of the separation box through the feeding belt to the next process.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] By providing a material guide trough and an intermittent material taking block, the intermittent material taking block can block the material guide trough through the arc surface, so that the coumarin precipitate solution inside is accumulated, and the first solid-liquid separation is performed through the second screen. The intermittent material taking block is rotated, and a part of the coumarin precipitate that has undergone the first solid-liquid separation is received through the material taking cavity, and the coumarin precipitate is transported to the surface of the first screen for the second solid-liquid separation, thereby improving the thoroughness of the equipment for solid-liquid separation of the coumarin precipitate solution, and facilitating the subsequent process processing;

[0022] By setting up the extrusion mechanism, when the intermittent material taking block transfers the coumarin precipitate to the surface of the first screen, the extrusion block in the extrusion mechanism slides outward from the material taking cavity under the action of its own gravity and the centrifugal force of rotation, and the coumarin precipitate can be completely pushed out of the material taking cavity, thereby avoiding the influence of material residue on the extraction efficiency. At the same time, the extrusion block can squeeze the coumarin precipitate on the surface of the first screen, thereby further improving the thoroughness of the solid-liquid separation of the coumarin precipitate;

[0023] Under the transmission of the driving pulley, the driven pulley and the belt, the intermittent material taking block can simultaneously drive the driving belt roller to rotate, thereby driving the feeding belt to send the material out of the separation box. A driving gear, a first driven gear and a second driven gear are set to drive the cleaning brush under the feeding belt to rotate and clean the feeding belt, thereby improving the cleanliness of the feeding belt surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of a coumarin extraction device for Cnidium monnieri proposed by the present invention;

[0025] Figure 2 A schematic cross-sectional view of the separation box of a coumarin extraction device for Cnidium monnieri proposed in the present invention;

[0026] Figure 3 A schematic diagram of the internal structure of a separation box of a coumarin extraction device for Cnidium monnieri proposed in the present invention;

[0027] Figure 4 for Figure 3 A schematic diagram of the enlarged structure of part A;

[0028] Figure 5 for Figure 3 A schematic diagram of the enlarged structure of part B;

[0029] Figure 6 A schematic diagram of the cross-sectional structure of a guide trough of a coumarin extraction device for Cnidium monnieri proposed by the present invention;

[0030] Figure 7 A schematic cross-sectional structure diagram of a support block of a coumarin extraction device for Cnidium monnieri proposed in the present invention;

[0031] Figure 8This is a schematic diagram of the disassembled structure of the extrusion mechanism of the coumarin extraction device for Cnidium monnieri proposed in the present invention.

[0032] In the figure: 1. screw conveyor; 2. separation box; 201. drainage plate; 202. first screen; 203. support block; 204. drain port; 205. window; 206. drain trough; 3. guide trough; 301. support trough; 302. discharge channel; 303. second screen; 304. drain channel; 4. inspection cover; 5. adapter block; 6. servo motor; 7. protective cover; 8. equipment bracket; 9. water tank; 10. feed belt; 11. shaft Support bracket; 12, driven belt roller; 13, driving belt roller; 14, cleaning brush; 15, intermittent material removal block; 1501, material removal chamber; 1502, maintenance chamber; 1503, stopper; 16, extrusion mechanism; 1601, extrusion block; 1602, guide rod; 1603, damping spring; 1604, blocking block; 17, first driven gear; 18, second driven gear; 19, driving pulley; 20, belt; 21, driven pulley; 22, driving gear. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0034] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Reference Figure 1-Figure 8, a coumarin extraction device for Cnidium monnieri, comprising an equipment support 8, a screw conveyor 1 for stirring a coumarin precipitate solution is fixedly installed on the top of the equipment support 8, and also comprising: a separation box 2, the separation box 2 is fixedly installed on one side of the equipment support 8, a material guide trough 3 is fixedly installed on the top of the separation box 2, the material guide trough 3 is used to guide the coumarin precipitate solution discharged from the outlet of the screw conveyor 1 and perform a first solid-liquid separation on it, a drainage plate 201 and a support block 203 are fixedly installed in the separation box 2, a first screen 202 is fixedly installed on the top of the support block 203, one side of the separation box 2 is an open structure, and an inspection cover 4 is sealed in the open part of the separation box 2; an intermittent material taking block 15, the intermittent material taking block 15 is rotatably installed in the separation box 2, the intermittent material taking block 15 is a cylindrical structure, and a plurality of material taking cavities 1501 are evenly opened on the circumferential surface of the intermittent material taking block 15, each material taking cavity 15 01 is provided with an extrusion mechanism 16, and the intermittent material taking block 15 intermittently receives the coumarin precipitate discharged from the guide groove 3 during the rotation process, and squeezes it to the surface of the first screen 202 for solid-liquid separation again; the feeding mechanism, the feeding mechanism is arranged below the first screen 202, and the feeding mechanism is used to send the coumarin precipitate after solid-liquid separation out of the separation box 2. The present invention sets the guide groove 3 and the intermittent material taking block 15. The intermittent material taking block 15 can block the guide groove 3 through the arc surface, so that the coumarin precipitate solution inside it accumulates, and the first solid-liquid separation is carried out through the second screen 303. The intermittent material taking block 15 is rotated to receive a part of the coumarin precipitate that has undergone the first solid-liquid separation through the material taking cavity 1501, and transfer it to the surface of the first screen 202 for the second solid-liquid separation, thereby improving the thoroughness of the equipment for solid-liquid separation of the coumarin precipitate solution and facilitating the processing of subsequent processes.

[0037] In this embodiment, a supporting groove 301 for installing the screw conveyor 1 is provided at the top of the material guide trough 3, a discharge channel 302 penetrating the outer surface thereof is provided at the bottom of the material guide trough 3, the discharge end of the screw conveyor 1 is embedded in the discharge channel 302, a drainage channel 304 connected to the discharge channel 302 is provided on one side of the material guide trough 3, a second screen 303 is fixedly installed between the drainage channel 304 and the discharge channel 302, an arc-shaped notch matched with the outer diameter of the intermittent material taking block 15 is provided at the bottom of the material guide trough 3, a maintenance cavity 1502 is provided on one side of the intermittent material taking block 15, a stopper 1503 with a polygonal columnar structure is fixedly installed in the center of the maintenance cavity 1502, an adapter block 5 is fixedly installed in the open mouth of the maintenance cavity 1502, a driving pulley 19 is fixedly installed in the center of the adapter block 5 away from the intermittent material taking block 15, and a circular hole matched with the adapter block 5 is provided on the surface of the maintenance cover plate 4.

[0038] During use, the coumarin precipitate solution is added to the screw conveyor 1, and it is conveyed to the separation box 2 during the stirring process. First, it is conveyed to the material guiding groove 3. At this time, the arc surface of the intermittent material taking block 15 abuts against the bottom of the material guiding groove 3 to block the discharge channel 302. The coumarin precipitate solution is temporarily stored in the discharge channel 302 first and undergoes the first solid-liquid separation through the second screen 303. As the screw conveyor 1 continuously conveys materials to the discharge channel 302, the materials are squeezed against each other, discharging water. The separated water enters the drainage channel 304 through the second screen 303, then flows to the drainage port 204 through the drainage plate 201, and finally enters the water tank 9.

[0039] In this embodiment, the extrusion mechanism 16 includes an extrusion block 1601. The periphery of the extrusion block 1601 abuts against the material taking cavity 1501 and is slidably installed in the material taking cavity 1501. A guide rod 1602 is fixedly installed on one side of the extrusion block 1601 close to the maintenance cavity 1502. A blocking block 1604 is fixedly installed at one end of the guide rod 1602. A damping spring 1603 is fixedly installed on one side of the blocking block 1604 close to the guide rod 1602. The damping spring 1603 is sleeved on the surface of the guide rod 1602 and its end is fixedly installed with the intermittent material taking block 15. A through hole adapted to the guide rod 1602 is provided between each material taking cavity 1501 and the maintenance cavity 1502. A plurality of drainage grooves 206 are provided at the top of the support block 203. The bottom of the support block 203 is provided with a U-shaped structure with an opening facing downwards. Windows 205 are provided on one side of both the support block 203 and the separation box 2.

[0040] During use, when the intermittent material taking block 15 transfers the coumarin precipitate to the surface of the first screen 202, the extrusion block 1601 in the extrusion mechanism 16 slides outwards from the material taking cavity 1501 under the action of its own gravity and rotational centrifugal force, and can completely push out the coumarin precipitate from the material taking cavity 1501, avoiding material residue from affecting the extraction efficiency. At the same time, the extrusion block 1601 can squeeze the coumarin precipitate against the surface of the first screen 202, further improving the thoroughness of the solid-liquid separation of the coumarin precipitate;

[0041] The drainage grooves 206 are provided at the top of the support block 203 to facilitate the drainage of the water discharged by the extrusion block 1601 when squeezing the material. The extrusion block 1601 is made of stainless steel and its surface is smooth-treated, so that it can slide out of the material taking cavity 1501 by its own weight and does not adhere to the coumarin precipitate. The damping spring 1603 can relieve the impact force generated by the movement of the extrusion block 1601, avoiding the blocking block 1604 from hitting the inner wall of the maintenance cavity 1502, and improving the service life of the equipment.

[0042] In this embodiment, the feeding mechanism includes a plurality of bearing brackets 11, a driving belt roller 13 and a driven belt roller 12. Both ends of the driving belt roller 13 and the driven belt roller 12 are rotatably installed between the corresponding two bearing brackets 11. A feeding belt 10 is sleeved between the driving belt roller 13 and the driven belt roller 12. The feeding belt 10 passes through two windows 205. Each bearing bracket 11 is fixedly installed on the surface of the equipment bracket 8. A water tank 9 for collecting separation water is fixedly installed at the bottom of the equipment bracket 8. The top of the water tank 9 is an open structure. A drain port 204 connected to the water tank 9 is provided at the bottom of the separation box 2. A cleaning brush 14 with a cylindrical structure is provided at the bottom of the support block 203. The cleaning brush 14 is rotatably installed between the two bearing brackets 11. The bristles of the cleaning brush 14 are in contact with the surface of the feeding belt 10. A driven pulley 21, a first driven gear 17 and a second driven gear 18 are rotatably installed on the surface of the inspection cover 4. A belt 20 is sleeved between the driven pulley 21 and the driving pulley 19. A driving gear 22 is fixedly installed at the center of one side of the driven pulley 21. The driving gear 22 meshes with the first driven gear 17, and the first driven gear 17 meshes with the second driven gear 18. One side of the first driven gear 17 is fixedly installed with the rotation center of the driving belt roller 13 through a connecting shaft, and one side of the second driven gear 18 is also fixedly installed with the rotation center of the cleaning brush 14 through a connecting shaft. A protective cover 7 is fixedly installed on one side of the inspection cover 4, and a servo motor 6 is fixedly installed on the surface of the protective cover 7. The output end of the servo motor 6 is fixedly installed with the rotation center of one side of the driving pulley 19 through a connecting shaft.

[0043] When in use, under the transmission of the active pulley 19, the driven pulley 21 and the belt 20, the intermittent material taking block 15 can simultaneously drive the active belt roller 13 to rotate, thereby driving the feeding belt 10 to send the material out of the separation box 2. A driving gear 22, a first driven gear 17 and a second driven gear 18 are provided, which can drive the cleaning brush 14 under the feeding belt 10 to rotate and clean the feeding belt 10, thereby improving the cleanliness of the surface of the feeding belt 10; a protective cover 7 is provided to protect these transmission structures to avoid accidental touch by the operator, thereby improving the safety of equipment use.

[0044] A method for using a coumarin extraction device of Cnidium monnieri, comprising the following steps:

[0045] S1: First, the coumarin precipitate solution is added to the screw conveyor 1 so that it is conveyed to the separation box 2 during the stirring process, and first conveyed to the guide trough 3. At this time, the arc surface of the intermittent material block 15 is against the bottom of the guide trough 3 to block the discharge channel 302, and the servo motor 6 is set to start intermittently. The coumarin precipitate solution is first temporarily stored in the discharge channel 302 and passes through the second screen 303 for the first solid-liquid separation. As the screw conveyor 1 continuously conveys the material to the discharge channel 302, the materials are squeezed against each other to discharge water. The separated water enters the drainage channel 304 through the second screen 303, and then flows to the drainage port 204 through the drainage plate 201, and finally enters the water tank 9;

[0046] S2: Then the servo motor 6 starts to drive the intermittent material taking block 15 to rotate counterclockwise, so that the material taking cavity 1501 is facing the discharge channel 302, and receives the coumarin precipitate after the solid-liquid separation. The servo motor 6 continues to rotate to transfer the received material to the first screen 202. During the transfer process, the extrusion mechanism 16, under the action of gravity and centrifugal force, the extrusion block 1601 completely pushes the material to the surface of the first screen 202 and performs a secondary extrusion on it, so as to further perform solid-liquid separation;

[0047] S3: After the secondary solid-liquid separation, the coumarin precipitate slides to the surface of the feeding belt 10 through the first screen 202, and is transported out of the separation box 2 through the feeding belt 10 to the next process.

[0048] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A coumarin extraction device from Cnidium monnieri, comprising a device support (8), a screw conveyor (1) for stirring a coumarin precipitate solution being fixedly mounted on the top of the device support (8), characterized in that: Also includes: A separation box (2), the separation box (2) being fixedly mounted on one side of an equipment support (8), a guide trough (3) being fixedly mounted on the top of the separation box (2), the guide trough (3) being used to guide a coumarin precipitate solution discharged from an outlet of the screw conveyor (1) and to perform a first solid-liquid separation on the solution, a guide plate (201) and a support block (203) being fixedly mounted inside the separation box (2), a first screen (202) being fixedly mounted on the top of the support block (203), one side of the separation box (2) being an open structure, and an inspection cover (4) being sealedly mounted inside the opening of the separation box (2); An intermittent material taking block (15), the intermittent material taking block (15) being rotatably installed in the separation box (2), the intermittent material taking block (15) being in a cylindrical structure, a plurality of material taking cavities (1501) being evenly opened on the circumferential surface of the intermittent material taking block (15), each of the material taking cavities (1501) being provided with an extrusion mechanism (16), and the intermittent material taking block (15) intermittently receiving the coumarin precipitate discharged from the material guide trough (3) during the rotation process, squeezing it onto the surface of the first screen (202) for solid-liquid separation again; A feeding mechanism, the feeding mechanism being arranged below the first screen (202), the feeding mechanism being used to feed the coumarin precipitate after solid-liquid separation out of the separation box (2); The top of the material guide trough (3) is provided with a support groove (301) for mounting the screw conveyor (1); the bottom of the material guide trough (3) is provided with a discharge channel (302) penetrating the outer surface thereof; the discharge end of the screw conveyor (1) is embedded in the discharge channel (302); one side of the material guide trough (3) is provided with a drainage channel (304) connected to the discharge channel (302); a second screen (303) is fixedly installed between the drainage channel (304) and the discharge channel (302); the intermittent material taking block (15) can block the material guide trough (3) through the arc surface; and the bottom of the material guide trough (3) is provided with an arc-shaped notch matched with the outer diameter of the intermittent material taking block (15).

2. The coumarin extraction device of Fructus Cnidium according to claim 1, characterized in that: A maintenance cavity (1502) is provided on one side of the intermittent material taking block (15), a stopper (1503) having a polygonal columnar structure is fixedly installed at the center of the maintenance cavity (1502), a transfer block (5) is fixedly installed in the open opening of the maintenance cavity (1502), a driving pulley (19) is fixedly installed at the center of a side of the transfer block (5) away from the intermittent material taking block (15), and a circular hole matching the transfer block (5) is provided on the surface of the maintenance cover plate (4).

3. The coumarin extraction device of Fructus Cnidium monnieri according to claim 2, characterized in that: The extrusion mechanism (16) includes an extrusion block (1601). The periphery of the extrusion block (1601) abuts against the material taking cavity (1501) and is slidably installed in the material taking cavity (1501). A guide rod (1602) is fixedly installed on one side of the extrusion block (1601) close to the maintenance cavity (1502). A blocking block (1604) is fixedly installed at one end of the guide rod (1602). A damping spring (1603) is fixedly installed on one side of the blocking block (1604) close to the guide rod (1602). The damping spring (1603) is sleeved on the surface of the guide rod (1602) and its end is fixedly installed with the intermittent material taking block (15). A through hole adapted to the guide rod (1602) is provided between each material taking cavity (1501) and the maintenance cavity (1502).

4. The coumarin extraction device of Fructus Cnidium according to claim 3, characterized in that: A plurality of drainage grooves (206) are provided at the top of the support block (203). The bottom of the support block (203) is provided with a U-shaped structure with an opening facing downwards. Windows (205) are provided on one side of the support block (203) and the separation box (2).

5. The coumarin extraction device of Fructus Cnidium according to claim 1, characterized in that: The feeding mechanism includes a plurality of bearing brackets (11), a driving belt roller (13) and a driven belt roller (12). Both ends of the driving belt roller (13) and the driven belt roller (12) are rotatably installed between two corresponding bearing brackets (11). A feeding belt (10) is sleeved between the driving belt roller (13) and the driven belt roller (12). The feeding belt (10) passes through the two windows (205). Each bearing bracket (11) is fixedly installed on the surface of the equipment bracket (8). A water tank (9) for collecting separated water is fixedly installed at the bottom of the equipment bracket (8). The top of the water tank (9) is of an open structure. A drain port (204) communicating with the water tank (9) is provided at the bottom of the separation box (2).

6. The coumarin extraction device of Fructus Cnidium according to claim 5, characterized in that: A cleaning brush (14) in a cylindrical structure is provided at the bottom of the support block (203). The cleaning brush (14) is rotatably installed between the two bearing brackets (11). The bristles of the cleaning brush (14) are in contact with the surface of the feeding belt (10). A driven belt pulley (21), a first driven gear (17) and a second driven gear (18) are rotatably installed on the surface of the maintenance cover plate (4). A belt (20) is sleeved between the driven belt pulley (21) and the driving belt pulley (19). A driving gear (22) is fixedly installed at the center on one side of the driven belt pulley (21). The driving gear (22) meshes with the first driven gear (17). The first driven gear (17) meshes with the second driven gear (18). One side of the first driven gear (17) is fixedly installed with the rotation center of the driving belt roller (13) through a connecting shaft. One side of the second driven gear (18) is also fixedly installed with the rotation center of the cleaning brush (14) through a connecting shaft. A protective cover (7) is fixedly installed on one side of the maintenance cover plate (4). A servo motor (6) is fixedly installed on the surface of the protective cover (7). The output end of the servo motor (6) is fixedly installed with the rotation center on one side of the driving belt pulley (19) through a connecting shaft.

7. A method for using a coumarin extraction device from Cnidium monnieri, characterized in that: The coumarin extraction device of the Fructus Cnidium monnieri according to any one of claims 1 to 6 comprises the following steps: S1: First, a coumarin precipitate solution is added to a screw conveyor (1) so that the solution is conveyed to a separation box (2) during stirring and first conveyed to a material guide trough (3). At this time, the arc surface of the intermittent material taking block (15) abuts against the bottom of the material guide trough (3) to block a discharge channel (302). The servo motor (6) is set to start intermittently. The coumarin precipitate solution is first temporarily stored in the discharge channel (302) and passes through a second screen (303) for a first solid-liquid separation. As the screw conveyor (1) continuously conveys the material to the discharge channel (302), the material is squeezed against each other to discharge water. The separated water passes through the second screen (303) into a drainage channel (304), then flows to a drainage port (204) through a drainage plate (201), and finally enters a water tank (9); S2: Then the servo motor (6) starts to drive the intermittent material taking block (15) to rotate counterclockwise, so that the material taking cavity (1501) faces the discharge channel (302) to receive the coumarin precipitate after the solid-liquid separation. The servo motor (6) continues to rotate to transfer the received material to the first screen (202). During the transfer process, the extrusion mechanism (16) is under the action of gravity and centrifugal force, and the extrusion block (1601) completely pushes the material to the surface of the first screen (202) and performs a second extrusion on it, thereby further performing solid-liquid separation. S3: After the secondary solid-liquid separation, the coumarin precipitate slides onto the surface of the feeding belt (10) through the first screen (202), and is transported out of the separation box (2) through the feeding belt (10) to the next process.

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