High-efficiency filtration and separation device for Chinese medicinal materials

Abstract

This invention relates to the field of traditional Chinese medicine (TCM) filtration and separation technology, specifically a high-efficiency TCM filtration and separation device. The device includes a support frame, a separation shell, an inlet, a outlet, a filter screen, and a drive assembly. A flexible scraping mechanism is fixedly installed inside the separation shell and located at the top of the filter screen. A pulse backflushing cleaning system is also fixedly installed inside the separation shell and located at the bottom of the filter screen. This high-efficiency TCM filtration and separation device achieves efficient multi-stage separation of materials by synchronously driving a screw conveyor, agitator, and rotation via a drive motor, a speed reducer, and three sets of pulleys. Simultaneously, the integrated flexible scraper utilizes the adaptive micro-vibration of modified polyurethane elastomer rubber to peel off the filter cake. Combined with PLC-controlled intelligent regulation of the pulse backflushing cleaning system, high-pressure gas generated by air compressors intermittently impacts the bottom of the filter via a conical spray, forming a dual anti-clogging mechanism of "mechanical scraping + pulse vibration."

Description

Technical Field

[0001] This invention relates to the field of traditional Chinese medicine filtration and separation technology, specifically to a high-efficiency filtration and separation device for traditional Chinese medicine. Background Technology

[0002] In the extraction, decoction, and subsequent purification processes of traditional Chinese medicinal materials, filtration and separation are crucial steps. Existing filtration devices for traditional Chinese medicinal materials typically employ static filters or simple rotary sieve structures, using gravity or pump pressure to force the medicinal liquid through the filter and retain the residue. However, in practical production applications, existing technologies have the following significant drawbacks:

[0003] Because the extracts of traditional Chinese medicinal herbs contain a large amount of viscous substances such as starch, pectin, and protein, these viscous components easily adhere to the filter screen surface during the filtration process, forming a dense filter cake layer. This leads to a rapid increase in filtration resistance and a sharp decrease in throughput. Traditional equipment often requires frequent shutdowns for manual cleaning, which seriously affects production efficiency.

[0004] Secondly, existing dust removal methods mostly rely on a single mechanical scraper or simple water rinsing. If the hardness of the mechanical scraper is not properly controlled, it can easily scratch the stainless steel filter screen and shorten its lifespan. If the hardness is too low, it cannot effectively remove viscous dregs. Simple water rinsing or air rinsing can often only remove surface scum and cannot remove tiny particles embedded deep in the mesh, resulting in incomplete restoration of the filter screen's permeability.

[0005] Therefore, developing a high-efficiency filtration and separation device for medicinal materials that can simultaneously possess powerful flexible scraping and deep pulse backflushing functions, effectively prevent adhesion, protect the filter screen, and improve continuous operation capability has become an urgent technical problem to be solved. Summary of the Invention

[0006] (a) Technical problems to be solved

[0007] To address the shortcomings of existing technologies, this invention provides a high-efficiency filtration and separation device for Chinese medicinal materials. It features dual synergistic cleaning with flexible adaptive scraping and deep pulse backflushing, anti-scratch protection for the filter screen, and strong continuous operation capability for high-viscosity materials. It solves the problems in existing technologies, such as the easy clogging of the filter screen caused by the extract of Chinese medicinal materials, the inability of a single cleaning method to completely remove tiny particles and sticky medicinal residues embedded deep in the mesh, the easy damage to the filter screen life by mechanical scrapers, and the need for frequent machine shutdowns for manual cleaning, which affects production efficiency.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the present invention provides the following technical solution: a high-efficiency filtration and separation device for Chinese medicinal materials, comprising a support frame, a separation shell, an inlet, a outlet, a filter screen, and a drive assembly. The separation shell is welded to the top of the support frame. The inlet is located on the top surface of the separation shell, and the outlet is located on one side of the bottom surface of the separation shell. The filter screen is bolted to the inside of the separation shell. The drive assembly is mounted on the outer surface of the separation shell. A spiral conveyor is rotatably mounted inside the separation shell at the bottom of the inlet. A rotating rod is rotatably mounted inside the separation shell on the right side of the spiral conveyor. Multiple separation rollers are equidistantly mounted on the surface of the rotating rod. An auger is rotatably mounted inside the separation shell near the outlet. A PLC controller is mounted on the right side of the separation shell.

[0010] The separation housing is internally fixedly installed with a flexible scraping mechanism located at the top of the filter screen, and the separation housing is internally fixedly installed with a pulse backflushing cleaning system located at the bottom of the filter screen.

[0011] Preferably, the drive assembly includes a drive motor, a reducer, a rotating shaft, a transmission unit, a power transmission unit, and a conveying unit. The drive motor is bolted to the surface of the separation housing. The reducer is fixedly mounted on the output shaft of the drive motor. One end of the rotating shaft is fixedly mounted on one side of the reducer, and the rotating shaft passes through the separation housing and extends to the outside of the separation housing.

[0012] The transmission unit includes a primary pulley, a secondary pulley, and a belt. The primary pulley is fixedly installed on the surface of the rotating shaft and located outside the separation housing. The secondary pulley is fixedly installed on one end surface of the screw conveyor and located outside the secondary pulley. The primary pulley and the secondary pulley are connected by the belt.

[0013] The power transmission unit includes a second main pulley, a second secondary pulley, and a second belt. The second main pulley is fixedly installed on the surface of the rotating shaft and located outside the separation housing, and the second main pulley is close to the first main pulley. The second secondary pulley is fixedly installed on the surface of the auger and located outside the separation housing. The second main pulley and the second secondary pulley are connected by the second belt.

[0014] The transmission unit includes a third main pulley, a third secondary pulley, and a third belt. The third main pulley is fixedly installed on the other end surface of the rotating shaft, and the third secondary pulley is fixedly installed on the surface of the rotating rod. The third main pulley and the third secondary pulley are connected by the third belt.

[0015] Preferably, the flexible scraping mechanism includes two vertical plates fixedly installed on the surface of the rotating shaft. Each of the two vertical plates has a movable cavity at both ends. A return spring is fixedly installed on the inner wall of each of the two movable cavities. A connecting block is fixedly installed on the other end of each of the two return springs. A scraper is installed between each pair of connecting blocks by bolts. A rubber strip is pasted on the opposite side of each of the two scrapers.

[0016] Preferably, both connecting blocks are slidably connected to the inner wall of the movable cavity, and both scrapers are located between the two vertical plates, with the opposite sides of the two scrapers in contact with the inner wall of the filter screen.

[0017] Preferably, the pulse backflushing cleaning system includes an air compressor bolted to the inner wall of the support frame, a conveying pipe fixedly installed at the outlet of the air compressor, an annular conveying disc fixedly installed inside the separation housing by a bracket, a solenoid valve and a one-way valve fixedly installed on the surface of the conveying pipe, and multiple nozzles evenly installed on the surface of the annular conveying disc, with a stainless steel mesh fixedly installed inside each nozzle.

[0018] Preferably, each of the nozzles is bolted to the surface of the annular conveyor plate, and the annular conveyor plate has an air collection chamber inside, which is connected to multiple nozzles. Each nozzle is tapered, and the air outlet of each nozzle is aligned with the bottom surface of the filter screen.

[0019] Preferably, the feed inlet, filter screen and discharge outlet are interconnected, the filter screen has a semi-arc design and is made of stainless steel, and the auger is located at the bottom of the annular conveyor plate and is interconnected with the discharge outlet.

[0020] Preferably, the rubber strip is made of modified polyurethane elastomer material with a Shore hardness of 85A to 95A, and the surface of the rubber strip facing the filter screen has a plurality of parallel guide microgrooves with a depth of 0.5-1.5mm along the axial direction.

[0021] (III) Beneficial Effects

[0022] Compared with the prior art, the present invention provides a high-efficiency filtration and separation device for Chinese medicinal materials, which has the following beneficial effects:

[0023] 1. This invention achieves adaptive adjustment of scraping force by setting up a flexible scraping mechanism driven by a return spring, using a modified polyurethane elastomer rubber strip with a Shore hardness of 85A to 95A to maintain a constant interference contact with the inner wall of the filter screen; this structure effectively peels off the dense filter cake layer formed by highly viscous drug residues, while using an elastic buffering mechanism to avoid the risk of scratching the stainless steel filter screen by rigid scraping, significantly extending the service life of the core filter components and reducing maintenance costs.

[0024] 2. This invention utilizes a pulse backflushing cleaning system located at the bottom of the filter screen. By employing a conical nozzle to deliver intermittent high-pressure airflow to the bottom surface of the filter screen, a coordinated cleaning mode is formed, consisting of "mechanical scraping and peeling of the macroscopic filter cake from the top and fluid backflushing to unclog the microscopic pores from the bottom." This dual action not only thoroughly removes tiny particles and sticky substances embedded deep within the mesh, solving the problem that traditional single water or air flushing cannot restore the permeability of the filter screen, but also significantly improves the continuous operating efficiency of the device in environments with high-viscosity Chinese herbal extracts.

[0025] 3. This invention utilizes a multi-belt drive design in the drive components to synchronously deliver power to the spiral conveyor, rotating rod, and auger. Combined with a semi-circular filter screen and a wear-resistant polytetrafluoroethylene (PTFE) bushing structure, it achieves uniform distribution of the liquid medicine and efficient directional conveying of solid residue. This layout effectively eliminates dead zones of material accumulation between the spiral drum and the shell, preventing equipment overload caused by large particles of residue getting stuck, thereby ensuring the dynamic stability and automated operation reliability of the entire separation process. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural view of the high-efficiency filtration and separation device for Chinese medicinal materials according to the present invention;

[0027] Figure 2 This is a partial cross-sectional perspective view of the high-efficiency filtration and separation device for Chinese medicinal materials of the present invention.

[0028] Figure 3 This is a partial cross-sectional perspective view of the back of the high-efficiency filtration and separation device for Chinese medicinal materials of the present invention;

[0029] Figure 4 This is a frontal sectional view of the structure of the high-efficiency filtration and separation device for Chinese medicinal materials of the present invention;

[0030] Figure 5 This is a three-dimensional view of the flexible scraping mechanism of the present invention;

[0031] Figure 6 This is a partial three-dimensional view of the pulse backflushing cleaning system of the present invention.

[0032] In the diagram: 1. Support frame; 2. Separation shell; 3. Feed inlet; 4. Discharge outlet; 5. Filter screen;

[0033] 6. Drive assembly; 61. Drive motor; 62. Reducer; 63. Shaft; 64. Transmission unit; 641. Main pulley No. 1; 642. Secondary pulley No. 1; 643. Belt No. 1; 65. Power transmission unit; 651. Main pulley No. 2; 652. Secondary pulley No. 2; 653. Belt No. 2; 66. Conveyor unit; 661. Main pulley No. 3; 662. Secondary pulley No. 3; 663. Belt No. 3;

[0034] 7. Flexible scraping mechanism; 71. Vertical plate; 72. Movable cavity; 73. Return spring; 74. Connecting block; 75. Scraper; 76. Rubber strip;

[0035] 8. Pulse backflushing cleaning system; 81. Air compressor; 82. Conveying pipe; 83. Annular conveyor disc; 84. Solenoid valve; 85. Check valve; 86. Nozzle; 87. Stainless steel mesh cover;

[0036] 9. Screw conveyor; 10. Rotating rod; 11. Separating roller; 12. Screw conveyor; 13. PLC controller. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] like Figures 1-6 As shown, the high-efficiency filtration and separation device for Chinese medicinal materials uses a support frame 1 as a base, with a separation shell 2 welded and fixed to its top. The feed inlet 3 and discharge outlet 4 are respectively opened on the top and bottom sides of the separation shell 2. The internal core filtration component is a semi-arc stainless steel filter screen 5 installed by bolts, and the drive component 6 is installed on the outside of the shell. At the same time, a spiral conveyor 9 is set directly below the feed inlet 3, a rotating rod 10 adjacent to the right side of the spiral conveyor 9 with multiple separation rollers 11 evenly distributed on its surface, and an auger 12 near the discharge outlet 4. The PLC controller 13 is integrated on the right side surface of the separation shell 2 for centralized control of the above-mentioned moving parts, thereby forming a complete flow channel structure from material feeding, multi-stage separation to slag discharge.

[0039] like Figure 1 , Figure 2 and Figure 3As shown, the drive assembly 6 uses a drive motor 61 mounted on the outer surface of the separation housing 2 as its power source. Its output shaft is connected to a reducer 62 via bolts. The reducer 62 drives the rotating shaft 63 that passes through the housing to rotate. The rotating shaft 63 has three independent belt drive paths outside the separation housing 2 to achieve multi-path synchronous drive: Firstly, the first main pulley 641 located at one end of the rotating shaft 63 is connected to the first secondary pulley 642 mounted at the end of the screw conveyor drum 9 via the first belt 643, thereby driving the screw conveyor. First, the drum 9 operates; second, the second main pulley 651, which is located next to the first main pulley 641, is connected to the second secondary pulley 652 on the surface of the auger 12 via the second belt 653, thereby driving the auger 12 to work; third, the third main pulley 661, located at the other end of the rotating shaft 63, is connected to the third secondary pulley 662 on the surface of the rotating rod 10 via the third belt 663, thereby driving the rotating rod 10 and the separating roller 11 on it to rotate synchronously. The three together constitute a set of efficient and stable power distribution system.

[0040] By using the drive motor 61 and reducer 62 to drive the rotating shaft 63 to rotate, and utilizing the synchronous transmission of the transmission unit 64, power transmission unit 65 and transmission unit 66, the spiral conveyor 9, auger 12 and rotating rod 10 can be operated in a coordinated manner by one machine with multiple drives. This effectively avoids the problems of complex control, high energy consumption and asynchronous operation caused by independent drive of multiple motors, thereby significantly improving the operating stability and power transmission efficiency of the device.

[0041] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the flexible scraping mechanism 7 is fixedly installed inside the separation housing 2 and located on top of the filter screen 5. Its core structure consists of two vertical plates 71 fixed to the surface of the rotating shaft 63. Each vertical plate 71 has movable cavities 72 at both ends. A sliding connecting block 74 is connected to the cavity through a return spring 73. A scraper 75 is installed between the two connecting blocks 74 by bolts, so that the scraper 75 maintains the freedom of sliding between the vertical plates 71. The side of the scraper 75 facing away from the filter screen 5 is tightly attached to the inner wall, and a modified polyurethane elastomer rubber strip 76 with a Shore hardness of 85A to 95A is pasted on the surface. The surface of the rubber strip 76 facing the filter screen has several parallel guide microgrooves with a depth of 0.5-1.5mm processed along the axial direction.

[0042] In this embodiment, when the rotating shaft 63 rotates, it drives the vertical plate 71 and scraper 75 to move accordingly. The elastic preload of the return spring 73 ensures that the rubber strip 76 with the flow guiding microgroove always maintains a constant flexible contact pressure with the inner wall of the filter screen 5. As the material adheres and forms a filter cake, the rubber strip 76 can adaptively adjust its position and generate high-frequency micro-vibration under the action of the spring. Combined with the local fluid disturbance generated by the flow guiding microgroove, the sticky drug residue is peeled off from the surface of the filter screen and guided out.

[0043] like Figure 4 and Figure 6 As shown, the pulse backflushing cleaning system 8 relies on an air compressor 81 installed on the inner wall of the support frame 1 to form an air source. Its output end is connected to an annular conveying disc 83 fixed inside the separation housing 2 via a conveying pipe 82. The conveying pipe 82 is connected in series with a solenoid valve 84 and a one-way valve 85 to regulate the airflow direction and start / stop. The annular conveying disc 83 has an air collection chamber inside and is connected to multiple conical nozzles 86 that are equidistantly distributed on the surface. Each nozzle 86 is fastened to the surface of the disc by bolts and has a built-in stainless steel mesh cover 87. Its key layout is that the air outlets of all nozzles 86 are precisely aligned with the bottom surface of the filter screen 5, forming a reverse airflow coverage array from bottom to top. Moreover, the system does not supply air continuously, but is controlled by the solenoid valve 84 according to a preset program to start and stop at high frequency, so that the high-pressure gas is intermittently ejected from the nozzles 86 in the form of "one burst" of pulses, forming periodic shock waves that act on the bottom of the filter screen.

[0044] In this embodiment, when the solenoid valve 84 opens instantaneously, the compressed air provided by the air compressor 81 forms a high-speed, high-pressure pulse airflow through the air collection chamber and nozzle 86 in a very short time. This pulse airflow violently impacts the residue layer at the bottom of the filter screen 5 from bottom to top, using the instantaneous kinetic energy of the airflow to shatter and peel off the adhered filter cake. Subsequently, the solenoid valve 84 closes quickly, interrupting the airflow and accumulating pressure for the next pulse, allowing the filter screen 5 to return to a breathable state. The advantage of this intermittent jetting is that it simulates a biological respiration-like "impact-recovery" mechanism. It can thoroughly remove stubborn blockages by utilizing the high-pressure characteristics of the pulse, while avoiding energy waste and excessive material disturbance caused by continuous airflow. This effectively extends the equipment life and significantly improves the stability of the filtration flux.

[0045] In this embodiment, a radial assembly gap of 0.5-1.0 mm is provided between the outer wall of the spiral conveyor cylinder 9 and the inner wall of the separation shell 2. Wear-resistant polytetrafluoroethylene (PTFE) bushings are installed at both ends of the rotating rod 10, and the two ends of the rotating rod 10 are hinged to the inner wall of the separation shell 2 through the wear-resistant PTFE bushings.

[0046] It should be noted that the PLC controller 13 is integrated on the right side surface of the separation housing 2. It is responsible for receiving feedback signals from various sensors and coordinating the start-up, shutdown, and operation rhythm of the drive motor 61, the flexible scraping mechanism 7, and the pulse backflushing cleaning system 8. This ensures that the screw conveyor, scraping cleaning, and pulse backflushing actions are precisely synchronized on the time axis. Through preset program logic, the PLC can automatically adjust the frequency and duration of pulse backflushing according to the degree of clogging of the filter screen 5, realizing intelligent closed-loop control of the entire process from feeding to slag discharge, thereby ensuring the efficient and stable operation of the device in an unattended state.

[0047] The working process of this high-efficiency filtration and separation device for Chinese medicinal materials includes: First, the material enters the separation shell 2 through the feed inlet 3. After the drive motor 61 is started, the power is transmitted to the rotating shaft 63 through the reducer 62. Through the synchronous transmission of the transmission unit 64, the power conveying unit 65 and the conveying unit 66, the spiral conveying drum 9, the auger 12 and the separation roller 11 on the rotating rod 10 are driven to work together to achieve the initial conveying and multi-stage separation of the material. At the same time, the flexible scraping mechanism 7 fixed on the rotating shaft 63 moves accordingly. The modified polyurethane elastomer rubber strip 76 on its surface is pressed against the inner wall of the semi-circular stainless steel filter screen 5 under the action of the return spring 73 to perform flexible scraping. The adhering medicinal residue is peeled off by high-frequency micro-vibration and guiding micro-grooves. The filter screen 5 is separated from the discharge port 4. When the surface of the filter screen 5 is severely clogged, the PLC controller 13 automatically triggers the pulse backflushing cleaning system 8 based on the feedback from the sensor (the sensor is installed on the inner wall of the separation housing 2 and close to the filter screen 5). The solenoid valve 84 is controlled to open intermittently, so that the high-pressure gas generated by the air compressor 81 enters the air collection chamber of the annular conveying disc 83 through the conveying pipe 82 and the one-way valve 85. The gas then impacts the bottom of the filter screen 5 from bottom to top through the conical nozzle 86 in a pulsed manner, breaking up and blowing off the stubborn filter cake. Finally, the clean liquid is discharged from the discharge port 4, while the separated solid residue is pushed out by the auger 12, forming an intelligent closed-loop operation flow from feeding, mechanical scraping to pulse backflushing assistance.

[0048] In summary, this high-efficiency filtration and separation device for Chinese medicinal materials achieves efficient multi-stage separation of materials by setting up a drive motor 61 that synchronously drives the spiral conveyor 9, auger 12, and rotating rod 10 via a reducer 62 and three sets of pulleys. Simultaneously, it integrates a flexible scraping mechanism 7 that utilizes the adaptive micro-vibration of modified polyurethane elastomer rubber strips 76 to peel off the filter cake. Furthermore, it coordinates with a PLC controller 13 to intelligently regulate the pulse backflushing cleaning system 8, causing the high-pressure gas generated by the air compressor 81 to intermittently impact the bottom of the filter screen 5 through conical nozzles 86. This forms a dual anti-clogging mechanism of "mechanical scraping + pulse vibration," significantly improving the stability of the filtration throughput and the efficiency of automated operation under complex working conditions.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0050] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency filtration and separation device for Chinese medicinal materials, comprising a support frame (1), a separation shell (2), a feed inlet (3), a discharge outlet (4), a filter screen (5), and a drive assembly (6), characterized in that: The separation shell (2) is welded to the top of the support frame (1). The feed inlet (3) is opened on the top surface of the separation shell (2). The discharge port (4) is opened on the bottom side surface of the separation shell (2). The filter screen (5) is installed inside the separation shell (2) by bolts. The drive assembly (6) is installed on the outer surface of the separation shell (2). A spiral conveyor (9) is rotatably installed inside the separation shell (2) and at the bottom of the feed inlet (3). A rotating rod (10) is rotatably installed inside the separation shell (2) and on the right side of the spiral conveyor (9). Multiple separation rollers (11) are equidistantly installed on the surface of the rotating rod (10). An auger (12) is rotatably installed inside the separation shell (2) and on the side near the discharge port (4). A PLC controller (13) is installed on the right side surface of the separation shell (2). The separation housing (2) is fixedly installed inside and located at the top of the filter screen (5), and the separation housing (2) is fixedly installed inside and located at the bottom of the filter screen (5) with a pulse backflushing cleaning system (8).

2. The high-efficiency filtration and separation device for traditional Chinese medicinal materials according to claim 1, characterized in that: The drive assembly (6) includes a drive motor (61), a reducer (62), a rotating shaft (63), a transmission unit (64), a power transmission unit (65), and a transmission unit (66). The drive motor (61) is bolted to the surface of the separation housing (2). The reducer (62) is fixedly installed at the output shaft of the drive motor (61). One end of the rotating shaft (63) is fixedly installed on one side of the reducer (62), and the rotating shaft (63) passes through the separation housing (2) and extends to the outside of the separation housing (2). The transmission unit (64) includes a first main pulley (641), a first secondary pulley (642), and a first belt (643). The first main pulley (641) is fixedly installed on the surface of the rotating shaft (63) and located outside the separation housing (2). The first secondary pulley (642) is fixedly installed on one end surface of the screw conveyor (9) and located outside the first secondary pulley (642). The first main pulley (641) and the first secondary pulley (642) are connected by the first belt (643). The power transmission unit (65) includes a second main pulley (651), a second secondary pulley (652), and a second belt (653). The second main pulley (651) is fixedly installed on the surface of the rotating shaft (63) and located outside the separation housing (2), and the second main pulley (651) is close to the first main pulley (641). The second secondary pulley (652) is fixedly installed on the surface of the auger (12) and located outside the separation housing (2). The second main pulley (651) and the second secondary pulley (652) are connected by the second belt (653). The transmission unit (66) includes a third main pulley (661), a third secondary pulley (662), and a third belt (663). The third main pulley (661) is fixedly installed on the other end surface of the rotating shaft (63), and the third secondary pulley (662) is fixedly installed on the surface of the rotating rod (10). The third main pulley (661) and the third secondary pulley (662) are connected by the third belt (663).

3. The high-efficiency filtration and separation device for traditional Chinese medicinal materials according to claim 2, characterized in that: The flexible scraping mechanism (7) includes two vertical plates (71) fixedly installed on the surface of the rotating shaft (63). Both ends of the two vertical plates (71) are provided with movable cavities (72). The inner walls of the two sets of movable cavities (72) are fixedly installed with return springs (73). The other ends of the two sets of return springs (73) are fixedly installed with connecting blocks (74). A scraper (75) is installed between each pair of connecting blocks (74) by bolts. A rubber strip (76) is pasted on the opposite side of the two scrapers (75).

4. The high-efficiency filtration and separation device for traditional Chinese medicinal materials according to claim 3, characterized in that: Both connecting blocks (74) are slidably connected to the inner wall of the active cavity (72), and both scrapers (75) are located between the two vertical plates (71), and the opposite sides of the two scrapers (75) are in contact with the inner wall of the filter screen (5).

5. The high-efficiency filtration and separation device for traditional Chinese medicinal materials according to claim 1, characterized in that: The pulse backflushing cleaning system (8) includes an air compressor (81) bolted to the inner wall of the support frame (1). A conveying pipe (82) is fixedly installed at the outlet of the air compressor (81). An annular conveying disc (83) is fixedly installed inside the separation housing (2) by a bracket. A solenoid valve (84) and a one-way valve (85) are fixedly installed on the surface of the conveying pipe (82). Multiple nozzles (86) are installed at equal intervals on the surface of the annular conveying disc (83). A stainless steel mesh cover (87) is fixedly installed inside each nozzle (86).

6. The high-efficiency filtration and separation device for traditional Chinese medicinal materials according to claim 5, characterized in that: Each of the nozzles (86) is bolted to the surface of the annular conveyor plate (83), and the annular conveyor plate (83) has an air collection chamber inside, which is connected to multiple nozzles (86). Each nozzle (86) is tapered, and the air outlet of each nozzle (86) is aligned with the bottom surface of the filter screen (5).

7. The high-efficiency filtration and separation device for traditional Chinese medicinal materials according to claim 5, characterized in that: The feed inlet (3), filter screen (5) and discharge port (4) are connected, and the filter screen (5) is a semi-arc design and is made of stainless steel. The auger (12) is located at the bottom of the annular conveyor plate (83) and is connected to the discharge port (4).

8. The high-efficiency filtration and separation device for traditional Chinese medicinal materials according to claim 3, characterized in that: The rubber strip (76) is made of modified polyurethane elastomer material with a Shore hardness of 85A to 95A. The surface of the rubber strip (76) facing the filter screen (5) has a number of parallel guide microgrooves with a depth of 0.5-1.5mm along the axial direction.

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