Superfine grinding device and raw material grinder for separating and purifying traditional Chinese medicine preparation

Abstract

The invention relates to the technical field of traditional Chinese medicine crushing devices, and discloses a superfine crushing device and a raw material crusher for separating and purifying traditional Chinese medicine preparations. The device is characterized in that a temperature detection element is arranged on a superfine grinding mechanism so as to measure the temperature of airflow in the superfine grinding mechanism and / or the temperature of the inner wall of the superfine grinding mechanism and output a temperature signal; the control element is electrically connected with the temperature detection element, the cooling unit and the external air source, receives the temperature signal and adjusts the power of the cooling unit and the external air source based on the temperature signal; and the bottom of the superfine grinding mechanism is connected with a cooling unit used for reducing the temperature, the problem that in the discharging process of an existing superfine grinding machine, discharging blockage is caused is solved, air flow generated by a nozzle is used for driving escape powder to move at a high speed, collision occurs, and the powder is prevented from falling off. And the design of a net-free annular through opening is used for replacing the filtering of multilayer filter screen superposition, so that the discharging blockage can be avoided, and meanwhile, the filtering effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of traditional Chinese medicine pulverizing devices, in particular to an ultrafine pulverizing device and a raw material pulverizer for separating and purifying traditional Chinese medicine preparations. Background Art

[0002] The active ingredients or components of traditional Chinese medicine are the material basis of the pharmacological effects of traditional Chinese medicine. How to make the active ingredients or components in traditional Chinese medicine play the strongest medicinal effect and improve the therapeutic effect has always been the goal pursued by medical workers. Medical research shows that the best absorption fineness of particles in the human stomach and intestines is about 15μm. The particle size of general traditional Chinese medicine micropowder is defined as 0.1~75μm, and the particle size of traditional Chinese medicine ultrafine powder is defined as 0.1~10μm. In recent years, a large number of studies have shown that after ultrafine grinding of traditional Chinese medicine, the particles reach the best absorption fineness level, and the solubility of the active ingredients of the drug in the gastrointestinal tract is significantly increased, thereby accelerating the onset of drug action and increasing the bioavailability of the drug.

[0003] Conventional pulverization technology cannot break the wall of Chinese medicine powder. Usually, ultrafine pulverization machinery is used to break the wall. Ultrafine pulverization technology is a material processing technology developed in the 1970s, which can crush materials into particles below 10μm. Airflow pulverizer, also known as airflow mill, can pulverize materials under the action of high-speed airflow. Airflow pulverizer uses compressed air as power. The adiabatic expansion of compressed gas at the nozzle will reduce the system temperature. It can be used to crush low-melting point and heat-sensitive materials and bioactive products.

[0004] In recent years, airflow mills have been widely used in the preparation of ultrafine powders of Chinese herbal medicines, and are one of the important methods for crushing Chinese herbal medicines. Since the shapes and sizes of Chinese herbal medicines are inevitably different during the extraction process, they need to be crushed using ultrafine mills. However, the ultrafine mills currently used are prone to blockage and equipment failures due to the large amount of material when discharging.

[0005] Applicant: Qingdao University of Technology has published a Chinese patent, Publication No.: CN115672511A - A rhizome Chinese medicine ultrafine grinding system, through a coarse grinder, a fine grinder, a feeding elevator is set on one side of the coarse grinder, and a spiral feeder is set between the coarse grinder and the fine grinder, the rhizome Chinese medicine is coarsely crushed, finely crushed, ultrafinely crushed, classified and collected in sequence to obtain broken wall micro powder. However, it does not mention what means are used to solve the defect of discharge blockage caused by large amount of discharge material.

[0006] Applicant: Noze Fluid Technology (Shanghai) Co., Ltd. has published a Chinese patent, Publication No.: CN105478212A - A new structure device for ultrafine powder grinding chamber and its grinding method, which eliminates the backflow phenomenon by adjusting the feeding angle through the grinding chamber and Venturi feeding system, and solves the problems of low gas source utilization and poor grinding efficiency through the octagonal grinding chamber. However, it does not take into account the serious heating of the medicine tank during the large-scale / long-term processing of traditional Chinese medicine, and also the defect of drug efficacy inactivation during the particle processing due to the high temperature in the medicine tank. Summary of the invention

[0007] In view of the above problems, the purpose of the present invention is to provide an ultrafine grinding device and a raw material grinder for separation and purification of traditional Chinese medicine preparations, so as to solve the problems that the current ultrafine grinding machine is blocked during the discharging process due to the large amount of materials; during the large-scale / long-term processing of traditional Chinese medicine, the medicine tank is seriously heated, resulting in the inactivation of the drug efficacy during the particle processing process, causing equipment failure; To achieve the above purpose, the present invention provides an ultrafine grinding device, comprising: Ultrafine grinding mechanism; At least one temperature detection element is arranged on the ultrafine grinding mechanism to measure the air flow temperature in the ultrafine grinding mechanism and / or the inner wall temperature of the ultrafine grinding mechanism and output a temperature signal; At least one cooling unit, which is arranged at the bottom of the ultrafine grinding mechanism and can be connected to an external air source; A control element, the control element is respectively connected to the temperature detection element and the cooling unit signal, the control element can receive the temperature signal, and adjust the working state of the cooling unit based on the temperature signal; Ultrafine grinding mechanism includes: An upper crushing chamber, the top of which is provided with an air inlet pipe and an air outlet pipe; The inner cavity upper plate comprises an inner cavity upper plate, an inner cavity opening arranged in the middle of the inner cavity upper plate, and an inner cavity pipeline extending in the inner cavity upper plate, one end of the inner cavity pipeline is connected to the inner cavity opening, a concave ring is arranged on the outer periphery of the inner cavity opening, and a plurality of guide ports are arranged in the concave ring; A nozzle ring, a mounting platform extending inward from the inner side of the nozzle ring, a plurality of nozzles are arranged on the mounting platform along the circumferential direction, and the nozzles are arranged through the mounting platform and the nozzle ring; An inner cavity lower plate, wherein an inner cavity top column is arranged in the middle of the inner cavity lower plate; The lower crushing chamber, the middle part of the lower crushing chamber is concave to form an inner cavity fixing platform, the outer edge of the inner cavity fixing platform is convex to form an outer cavity ventilation platform, and an air blast port is arranged on the outer cavity ventilation platform, and the air blast port can be connected to an external air source through a pipeline; A movable clamp, which is buckled at the outer edges of the upper crushing chamber and the lower crushing chamber; When the inner cavity upper plate and the inner cavity lower plate are respectively buckled on the upper and lower edges of the mounting platform, a spacing of small particle diameter is retained between the inner cavity opening and the inner cavity top column; when the upper crushing chamber and the lower crushing chamber are installed on the periphery of the inner cavity upper plate and the inner cavity lower plate, the air inlet pipe is located within the concave ring range, and the air outlet pipe is connected with the inner cavity opening.

[0008] Preferably, the inner diameter of the air intake pipe is larger than the sum of the inner diameters of any two guide openings, the angle formed by the air intake pipe on the upper crushing chamber is the air intake guide angle α, the inclination angle formed by the guide opening on the upper plate of the inner chamber is the guide installation angle β, and the range of the air intake guide angle α is 30°-45°; the offset range of the angle formed by each guide installation angle β and the air intake guide angle α is ±3.0°-7.5°.

[0009] Preferably, air bubbles for vibration reduction and noise reduction are provided in the nozzle ring, and the minor axis length of the air bubbles is between 30% and 50% of the thickness of the nozzle ring.

[0010] Preferably, the inner diameter of the nozzle in the nozzle ring is larger than the inner diameter of the nozzle on the mounting platform, the portion of the nozzle between the nozzle ring and the mounting platform is arranged to be horizontally inclined, the angle formed by the direction of the nozzle and the line connecting the nozzle to the center of the nozzle ring is the nozzle initial angle γ1, and the calculation formula for the value of the nozzle initial angle γ1 and the adjustment interval △γ1 is:

[0011]

[0012]

[0013]

[0014] Where: γ1 is the initial angle of the nozzle, r p is the radius of the grading circle, R is the radius of the nozzle ring, r i is the inner cavity opening radius, n is the number of nozzles, γ 1max The maximum value of the nozzle initial angle, γ 1min The minimum value of the nozzle initial angle.

[0015] Preferably, inside the ultrafine grinding mechanism, the diameter calculation formula of small particles at different air flow rates is: The inertial centrifugal force on the small particle is:

[0016] The centripetal force on the small particle is:

[0017] The fluid resistance of small particles is:

[0018] Where: d is the diameter of the small particle, ρ s is the density of small particles, ρ is the airflow density, r p is the radius of the grading circle, u t is the tangential velocity of the fluid, u r is the centripetal velocity of the fluid, ζ is the drag coefficient; When 1<Re<10 3 When, ζ=18.5 / Re 0 .6 , Re is the Reynolds number, Re = du r ρ / μ, μ is the fluid viscosity; according to F C 、F D and f will reach equilibrium on the graded circle, namely:

[0019] .

[0020] Preferably, the inclination direction of the guide port and the air intake pipe are arranged to be consistent.

[0021] A raw material crusher for separating and purifying Chinese medicine preparations also includes: Hinged box body and lid; An air source processor, a solenoid valve, a frequency generator, a driver and control components are arranged in the box; One end of the air source processor is connected to an external air source through an air inlet interface, and the other end of the air source processor is connected to a solenoid valve through a two-way joint. The solenoid valve is directly connected to the first pipeline through a three-way pipe, and the middle pipe on the three-way pipe is connected to the frequency generator through an air supply pipe. The driver is installed on the top of the box. The driver is provided with an air supply port, an air outlet and an adjusting knob. The air supply port is connected to an external air source, and the adjusting knob is used to adjust the air volume in the air outlet.

[0022] The box cover has a touch screen installed on its outer surface, the touch screen is electrically connected to the control element, and the control element is electrically connected to the frequency generator.

[0023] Preferably, the coarse crushing mechanism comprises: A coarse crushing feed piece, which is funnel-shaped and has a coarse crushing feed port at the end; A coarse grinding shell, the top of which is connected to a coarse grinding feed piece, the coarse grinding feed port is connected to the coarse grinding shell, and a space for accommodating a coarse grinding rotor is provided in the coarse grinding shell; A coarse crushing discharge piece, a plate piece is arranged on the top of the coarse crushing discharge piece, and a second through-hole is arranged on the plate piece; a coarse crushing discharge port is arranged below the coarse crushing discharge piece, and a counterweight piece is installed on the outer wall of the coarse crushing discharge port; A venturi nozzle, the end of which is connected to the coarse crushing outlet through a locking piece; An air pump, wherein the output end of the air pump is connected to the coarse grinding rotor, and the air pump is connected to the air outlet.

[0024] Preferably, the coarse grinding rotor comprises: A coarse grinding shaft, which is vertically arranged and passes through the middle of the coarse grinding shell and the plate, and the end of the coarse grinding shaft is connected to the air pump; A coarse pulverizing knife mounting seat, wherein the coarse pulverizing knife mounting seat is provided with an upper mounting seat and a lower mounting seat along the axial direction of the coarse pulverizing rotating shaft, wherein a first through-portion is provided on the upper mounting seat, and the first through-portion is provided correspondingly to the coarse pulverizing feeding port; and an empty window is provided on the lower mounting seat, and the empty window is provided correspondingly to the second through-portion; A coarse crushing blade, both ends of which are mounted on an upper mounting seat and a lower mounting seat; A coarse crushing stop plate, the coarse crushing stop plate surrounds the outer side of the coarse crushing blade, and the upper and lower ends of the coarse crushing stop plate are connected to the coarse crushing blade mounting seat; Filter cloth, the filter cloth is fixed on the empty window, the filter cloth is arranged as a first layer of filter cloth and a second layer of filter cloth, a gap is arranged between the first layer of filter cloth and the second layer of filter cloth, the mesh aperture of the first layer of filter cloth is arranged as 2mm-5mm, and the mesh aperture of the second layer of filter cloth is less than 2mm.

[0025] Preferably, it also includes: a cyclone separator, which separates small particles in the mixture from the airflow; Pulse dust collector, which separates the fugitive powder in the mixture from the air flow; A collecting device, wherein the collecting device collects small particles; The filtration system collects the escaping powder and discharges the gas, which can be discharged directly into the atmosphere.

[0026] Compared with the prior art, the present invention has the following beneficial effects: The present invention utilizes the supersonic airflow generated by the high-pressure nozzle to drive the large Chinese medicine particles to generate high-speed movement and collision in the inner cavity upper plate and the inner cavity lower plate. At the same time, the high-pressure gas generated by the external air source enters into the inner cavity upper plate and the inner cavity lower plate through the blast port-nozzle, and accelerates the crushing effect with the "multi-directional fluid". The crushing ability is strong, and the large Chinese medicine particles can be further crushed into Chinese medicine wall-broken micro-powder (small particles). In addition, the spacing of the small particle diameter is retained between the inner cavity through hole and the inner cavity top column in the ultrafine crushing mechanism, and the "multi-layer filter screen stacking" filtration is replaced by the "netless annular through hole" design, and the "vibration filtration" is replaced by the high-speed "airflow drainage", and the traditional "filter screen filtration" concept is abandoned, which can avoid the blockage of the discharge material, and at the same time improve the filtration effect and reduce the cost of frequent replacement of the filter screen.

[0027] The control element of the ultrafine pulverizing device adjusts the power of the cooling unit and the external gas source according to the temperature signal obtained by the temperature detection element. When the temperature signal obtained by the temperature detection element is higher than the preset value, the control element increases the power supply of the cooling unit and cools down the ultrafine pulverizing mechanism to avoid inactivation of internal drugs.

[0028] The angle deviation setting of the guide angle and the intake guide angle of the present invention allows small particles to impact in a disorderly manner. At the same time, the nozzle inclination and the nozzle inner diameter difference further accelerate the gas flow rate. In addition, the spiral inner wall of the nozzle causes the airflow to rotate, causing the particles in the nozzle ring to impact in a disorderly manner, thereby accelerating the crushing effect.

[0029] The bubble holes of the present invention can reduce the noise generated by the impact of small particles, and their setting size also takes into account the overall structural strength; the nozzle initial angle γ1 is accurately adjusted by calculation to determine the number of nozzles, the radius of the nozzle ring, etc., and finally the adjustable range of the placement angle is obtained. Taking the optimal value can enable large particles to fully collide and be crushed as quickly as possible, thereby increasing the crushing rate and achieving a better crushing effect.

[0030] The present invention can calculate the diameter of small particles under different air flow speeds through a formula, and then the air flow speed can be adjusted according to the formula at any time to objectively and accurately obtain the current small particle diameter size, so that the small particle diameter is more controllable and the particle size is more uniform.

[0031] The coarse grinding mechanism of the present invention performs coarse grinding mainly based on shear force according to the characteristics of Chinese medicine. A coarse grinding blade is arranged inside, so that the coarse grinding rotor will shear and impact the Chinese medicine multiple times every time it rotates one circle, with high grinding efficiency. The coarse grinding stop plate is used to block the material, and the double filter cloth is used for layered filtering to increase the grinding effect. The electromagnetic valve is used to control the on-off of the air path, and the frequency generator changes the airflow state to drive the operation of the ultrafine grinding mechanism, increase or decrease the airflow speed, reduce the internal impact temperature, and then perform synchronous cooling treatment from the inside of the ultrafine grinding mechanism to avoid excessive temperature difference between the inside and the outside, which causes the inactivation of the efficacy of the Chinese medicine particles.

[0032] The control box of the present invention interacts with the touch screen on the box cover, and can accurately control the coarse grinding rotor speed, air flow speed, etc. according to set parameters, thereby ensuring the stability and accuracy of the grinding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of the combination of the Venturi nozzle and the superfine grinding mechanism of the present invention.

[0034] Figure 2 It is a schematic diagram of the combined structure of the inner cavity through-port and the inner cavity top column of the present invention.

[0035] Figure 3It is a structural schematic diagram of the combination of the venturi nozzle, the ultrafine grinding mechanism and the external air source of the present invention.

[0036] Figure 4 It is a schematic diagram of the explosion structure on one side of the ultrafine pulverizing mechanism of the present invention.

[0037] Figure 5 It is a schematic diagram of the explosion structure on one side of the ultrafine pulverizing mechanism of the present invention.

[0038] Figure 6 It is a structural schematic diagram of the outer surface of the ultrafine grinding mechanism of the present invention.

[0039] Figure 7 It is a schematic diagram of the transverse cross-sectional structure of the nozzle ring of the present invention.

[0040] Figure 8 Schematic diagram of the nozzle initial angle of the present invention.

[0041] Fig. 9 It is a schematic diagram of the force exerted on the small particles of the present invention in the air flow field.

[0042] Fig.10 It is a schematic diagram of the cross-sectional structure of the nozzle ring of the present invention.

[0043] Fig.11 It is the general assembly drawing of the present invention.

[0044] Fig.12 It is a structural schematic diagram of the control box of the present invention.

[0045] Fig.13 It is a schematic diagram of the overall structure of the coarse crushing mechanism of the present invention.

[0046] Fig.14 It is a partial cross-sectional view of the coarse pulverizing mechanism of the present invention.

[0047] Fig.15 It is a schematic diagram of the structure of one side of the coarse crushing blade of the present invention.

[0048] Fig.16 It is a schematic structural diagram of the other side of the coarse crushing blade of the present invention.

[0049] Fig.17 It is a schematic diagram of the structure of the cyclone separator and the pulse dust collector of the present invention.

[0050] Fig.18 Schematic diagram of the collecting device of the present invention.

[0051] In the figure: 100, control box; 200, coarse grinding mechanism; 300, ultrafine grinding mechanism; 400, cyclone separator; 500, pulse dust collector; 600, collecting device; 700, filtering system; 800, external air source; 900, small particles; 910, first pipeline; 920, second pipeline; 930, third pipeline; 1000, temperature detection element; 1100, cooling unit; 1200, control element; 101, box body; 102, driver; 103, air inlet interface; 104, air source processor; 105, two-way connector; 106, solenoid valve; 107, three-way pipe; 108, middle pipe; 109, air supply pipe; 110, frequency generator; 111, box cover; 112, touch screen; 113, adjustment knob; 114, air supply port; 115, air outlet; 201, coarse grinding inlet; 202, coarse grinding inlet; 203, coarse grinding shell; 204, coarse grinding rotor; 205, coarse grinding discharge member; 206, plate; 207, second through-hole; 208, coarse grinding discharge port; 209, counterweight; 210, venturi nozzle; 211, locking member; 212, coarse grinding shaft; 213, air pump; 214, coarse grinding blade mounting seat; 215, clamping part; 216, upper mounting seat; 217, lower mounting seat; 218, first through-hole; 219, empty window; 220, coarse grinding blade; 221, coarse grinding stop plate; 222, filter cloth; 301, upper crushing chamber; 302, air inlet pipe; 303, air outlet pipe; 304, inner cavity upper plate; 305, inner cavity opening; 306, inner cavity pipeline; 307, concave ring; 308, guide port; 309, nozzle ring; 310, mounting platform; 311, nozzle; 312, inner cavity lower plate; 313, inner cavity top column; 314, lower crushing chamber; 315, inner cavity fixing platform; 316, outer cavity ventilation platform; 317, blast port; 318, movable clamp; 319, bubble hole. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which 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", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it 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 directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of an embodiment of the present invention based on the overall structure of the present invention.

[0054] See also Figure 1-Figure 18 As shown, the present invention provides a technical solution: comprising: like Figure 1-Figure 6 As shown: At least one temperature detection element 1000, which is disposed on the ultrafine grinding mechanism 300 to measure the air flow temperature in the ultrafine grinding mechanism 300 and / or the inner wall temperature of the ultrafine grinding mechanism 300, and output a temperature signal; At least one cooling unit 1100, which is disposed at the bottom of the ultrafine grinding mechanism 300, and the cooling unit 1100 can be connected to the external gas source 800; the control element 1200 is respectively connected to the temperature detection element 1000 and the cooling unit 1100 by signal, and the control element 1200 can receive the temperature signal and adjust the working state of the cooling unit 1100 based on the temperature signal; The ultrafine grinding mechanism 300 comprises: An air inlet pipe 302 and an air outlet pipe 303 are installed at the top of the upper crushing chamber 301; the inner cavity upper plate includes an inner cavity upper plate 304, an inner cavity opening 305 arranged in the middle of the inner cavity upper plate 304, and an inner cavity pipe 306 extending in the inner cavity upper plate 304, one end of the inner cavity pipe 306 is connected to the inner cavity opening 305, a concave ring 307 is arranged on the outer periphery of the inner cavity opening 305, and a plurality of guide ports 308 are arranged in the concave ring 307; A mounting platform 310 extends inward from the inner side of the nozzle ring 309, and a plurality of nozzles 311 are arranged on the mounting platform 310 along the circumferential direction, and the nozzles 311 are arranged through the mounting platform 310 and the nozzle ring 309; an inner cavity top column 313 is arranged in the middle of the inner cavity lower plate 312; the middle part of the lower crushing cavity 314 is recessed to form an inner cavity fixing platform 315, and the outer edge of the inner cavity fixing platform 315 protrudes to form an outer cavity ventilation platform 316, and the outer cavity ventilation platform 316 is provided with an air blast port 317, and the air blast port 317 is connected to the external air source 800 through a pipeline; a movable clamp 318 is buckled at the outer edges of the upper crushing cavity 301 and the lower crushing cavity 314; When the inner cavity upper plate 304 and the inner cavity lower plate 312 are buckled on the upper and lower edges of the mounting platform 310, a spacing of the diameter of small particles 900 is retained between the inner cavity opening 305 and the inner cavity top column 313; when the upper crushing chamber 301 and the lower crushing chamber 314 are installed on the periphery of the inner cavity upper plate 304 and the inner cavity lower plate 312, the air inlet pipe 302 is located within the range of the concave ring 307, and the air outlet pipe 303 is connected with the inner cavity opening 305.

[0055] The control element 1200 in the present ultrafine grinding device adjusts the power of the cooling unit 1100 and the external gas source 800 according to the temperature signal obtained by the temperature detection element 1000. When the temperature signal obtained by the temperature detection element 1000 is higher than the preset value, the control element 1200 increases the power supply of the cooling unit 1100, cools the ultrafine grinding mechanism 300, and reduces the temperature generated by the rapid collision of the small particles 900. The ultrafine grinding mechanism 300 performs ultrafine grinding operation on the large particles to obtain a mixture of the small particles 900 and the escaped powder.

[0056] The present invention utilizes the supersonic airflow generated by the nozzle 311 to drive the large Chinese medicine particles to generate high-speed movement and collision in the inner cavity upper plate 304 and the inner cavity lower plate 312. At the same time, the high-pressure gas generated by the external gas source 800 enters the inner cavity upper plate 304 and the inner cavity lower plate 312 through the blast port 317-nozzle 311, and accelerates the crushing effect with the "multi-directional fluid". The crushing ability is strong, and the large Chinese medicine particles can be further crushed into Chinese medicine wall-broken micro-powder (small particles 900). In addition, the spacing of the diameter of the small particles 900 is retained between the inner cavity opening 305 and the inner cavity top column 313 in the ultrafine crushing mechanism 300, and the "multi-layer filter screen stacking" filtering is replaced by the "netless annular opening" design, and the "vibration filtering" is replaced by the high-speed "airflow diversion", and the traditional "filter screen filtering" concept is abandoned, which can avoid the blockage of the discharge material, and at the same time improve the filtering effect and reduce the cost of frequent replacement of the filter screen.

[0057] Such as 8- Fig.10As shown, another preferred embodiment, considering that the small particles 900 collide with each other and the small particles 900 collide with the superfine grinding mechanism 300, and produce noise. For this reason, a bubble hole 319 for shock absorption and noise reduction is set in the nozzle ring 309, and the setting of the bubble hole 319 further offsets the noise. In addition, the length of the minor axis diameter of the bubble hole 319 is between 30% and 50% of the thickness of the nozzle ring 309, on the one hand to ensure the structural strength, and on the other hand to ensure the final data value derived from the noise reduction effect.

[0058] In the ultrafine grinding mechanism 300, an important factor affecting the grinding effect is the air flow velocity, so a comprehensive calculation and analysis is carried out for different air flow velocities. The calculation formula for the diameter of small particles 900 at different air flow velocities is: The inertial centrifugal force on the small particle 900 is: (1.1) The centripetal force on the small particle 900 is: (1.2) The fluid resistance of the small particle 900 is: (1.3) Where: d is the diameter of the small particle 900, ρ s is the density of small particles 900, ρ is the airflow density, r p is the radius of the grading circle, u t is the tangential velocity of the fluid, u r is the centripetal velocity of the fluid, ζ is the drag coefficient, and γ1 is the initial angle of the nozzle; When 1<Re<10 3 When, ζ=18.5 / Re 0 .6 , Re is the Reynolds number, Re = du r ρ / μ, μ is the fluid viscosity; according to F C 、F D and f will reach equilibrium on a certain graded circle, that is: (1.4) After sorting, it can be obtained that the calculation formula for the diameter of small particles 900 at different air flow speeds is: (1.5) The above formula binds the air flow rate, i.e., the air supply rate of the external air source 800, to the diameter of the small particles 900, and then controls the air supply rate of the external air source 800 through the control element, and then controls the minimum crushing degree of the small particles 900. It can be seen from formula (1.5) that when the air flow medium and the crushed material are constant, ρ, ρ sThe resistance coefficient ζ also changes, but not much. p The main factor is the tangential velocity u of the fluid. t and the centripetal velocity u of the fluid r and the radius r of the grading circle p . The particle density of the material in the actual production process is ρ s is certain, and the method often used is to increase the inlet strength of the airflow to make u t The particle size can be adjusted by changing the impact speed, but this will increase energy consumption. Ideally, the crushing operation is achieved through the maximum impact speed. Based on this design concept, the maximum crushing capacity will be obtained. At this time, the adjustment of the product particle diameter can only rely on r p The change of r p The change is actually achieved by changing the initial angle γ1 of the nozzle 311, which is the design concept of the initial angle γ1 of the nozzle 311. In order to achieve low-energy consumption (reduce air flow) crushing, when the nozzle 311 speed is the maximum, adjusting the diversion placement angle β is the only and feasible way to adjust the product particle size. At this time, the energy of the crushing unit must be fully utilized, so that a specific airflow crusher can be used to crush smaller product particle sizes. Therefore, such an airflow crusher will be more adaptable to different operating conditions. The present invention can calculate the diameter of small particles 900 under different airflow speeds through a formula, and then adjust the airflow speed according to the formula at any time, and objectively and accurately obtain the current small particle 900 diameter size, the small particle 900 diameter is more controllable, and the particle size is more uniform. In order to further enhance the crushing effect, the original intention of the design is to optimize the design of the nozzle 311, replace the "conventional through-hole nozzle 311" with the "jet nozzle 311", and further analyze and stipulate its bevel setting angle. In addition, the inner wall of the nozzle 311 is spiral, which makes the airflow rotate, so that the particles in the nozzle ring 309 are subjected to disordered impact, accelerating the crushing effect. To this end, the inner diameter of the nozzle 311 on the nozzle ring 309 is larger than the inner diameter of the nozzle 311 on the mounting platform 310, and the nozzle 311 is horizontally inclined on the nozzle ring 309 and the mounting platform 310. The angle formed by the direction of the nozzle 311 and the line connecting the nozzle 311 to the center of the nozzle ring 309 is the initial angle γ1 of the nozzle 311. The value of the initial angle γ1 of the nozzle 311 and the calculation formula of the adjustment interval △γ1 are: (1.6) (1.7) (1.8) (1.9) Where: γ1 is the initial angle of the nozzle, r p is the radius of the grading circle, R is the radius of the nozzle ring 309, r iis the radius of the inner cavity opening 305, n is the number of nozzles, γ 1max The maximum value of the nozzle initial angle, γ 1min The minimum value of the nozzle initial angle.

[0059] Here, according to the attached figure, the number of nozzles 311 is set to 4, the radius R of the nozzle ring 309 is 300 mm, and the radius r of the inner cavity opening 305 is i is 30mm, the grading circle radius r p When it is 150mm, the adjustment interval △γ1 is 28°, and the initial angle γ1 of the nozzle is 20°, at which time the crushing effect is the best.

[0060] In order to increase the intake flow rate and avoid the intake pipe 302 being diverted and the flow rate being reduced due to the guide port 308 being too large, the inner diameters of the intake pipe 302 and the guide port 308 are restricted so that the inner diameter of the intake pipe 302 is larger than the sum of the inner diameters of any two guide ports 308.

[0061] like Figure 3 As shown, at the same time, the angle formed by the air intake pipe 302 on the upper grinding chamber 301 is the air intake guide angle α. The optimal solution of the air intake guide angle α is obtained by the analytical method, which is specifically: Assume that the air flow velocity in the upper crushing chamber 301 is , the air flow velocity in the air inlet pipe 302 is . and decompose the two velocities into the normal (t) and tangential (n) directions: (1.10) (1.11) (1.12) (1.13) The relative tangential velocity is (1.14) Assuming that the diameter of the intake pipe 302 is S, the area where the airflow collides is also S. When the airflow collides at the intake guide angle α, the shear stress calculation formula is:

[0062] (1.16) Where u is the fluid velocity and the small particle velocity, y is the transition layer thickness, is the fluid viscosity; (1.17) (1.18) The optimal solution can be obtained, and the range of the intake guide angle α is 30°-45°.

[0063] In addition, the guide port 308 is directly connected to the air inlet pipe 302, and the inclination angle of the guide port 308 on the inner cavity upper plate 304 is set as the guide placement angle β. In order to avoid the blockage of the airflow flowing out of the air inlet pipe 302 received by the guide port 308, the inclination direction of the guide port 308 is set to be consistent with the air inlet pipe 302. At the same time, in order to improve the crushing and stirring effect, the guide placement angle β is offset. Each guide placement angle β can be the same or inconsistent, but the offset range of the angle between the guide placement angle β and the air inlet guide angle α is ±3.0°-7.5°, so as to ensure a better impact effect between the small particles 900 and appropriately reduce noise.

[0064] like Figure 11-Figure 18 As shown: The control box 100 adjusts the gas flow output by the external gas source 800, and specifically comprises: a hinged box body 101 and a box cover 111, and a gas source processor 104, a solenoid valve 106, a frequency generator 110 and a driver 102 are arranged in the box body 101; One end of the gas source processor 104 is connected to the external gas source 800 through the gas inlet interface 103, and the other end of the gas source processor 104 is connected to the solenoid valve 106 through the two-way connector 105. The solenoid valve 106 is directly connected to the first pipeline 910 through the three-way pipe 107. The middle pipe 108 on the three-way pipe 107 is connected to the frequency generator 110 through the gas supply pipe 109; The driver 102 is installed on the top of the box 101 . The driver 102 is provided with an air supply port 114 , an air outlet 115 and an adjusting knob 113 . The air supply port 114 is connected to an external air source 800 , and the adjusting knob 113 adjusts the air volume in the air outlet 115 .

[0065] High-pressure gas is generated by an external gas source 800, enters the gas source processor 104 from the air inlet interface 103 for filtration, and provides high-pressure gas. The solenoid valve 106 is used to control the on-off of the gas circuit. The frequency generator 110 changes the airflow state to drive the operation of the ultrafine grinding mechanism 300, increase or decrease the airflow speed, and reduce the internal impact temperature.

[0066] The control box 100 of the present invention interacts with the touch screen 112 on the box cover 111 to accurately control the rotation speed of the coarse grinding rotor 204, the air flow speed, etc. according to the set parameters, thereby ensuring the stability and accuracy of the grinding process.

[0067] The coarse grinding feed piece 201 is funnel-shaped, and a coarse grinding feed port 202 is arranged at the end; the top of the coarse grinding shell 203 is connected to the coarse grinding feed piece 201, the coarse grinding feed port 202 is arranged through the coarse grinding shell 203, and a space for accommodating the coarse grinding rotor 204 is arranged in the coarse grinding shell 203; a plate 206 is arranged on the top of the coarse grinding discharge piece 205, and a second through portion 207 is arranged on the plate 206; a coarse grinding discharge port 208 is arranged below the coarse grinding discharge piece 205, and a counterweight 209 is installed on the outer wall of the coarse grinding discharge port 208; the end of the venturi nozzle 210 is connected to the coarse grinding discharge port 208 through a locking piece 211; the output end of the air pump 213 is connected to the coarse grinding rotor 204, and the air pump 213 is pneumatically connected to the driver 102 in the control box 100, specifically connected to the air outlet 115.

[0068] The coarse grinding rotor 204 includes: a coarse grinding shaft 212, a coarse grinding knife mounting seat 214, a coarse grinding blade 220, and a filter cloth 222; the coarse grinding shaft 212 is vertically arranged and passes through the middle of the coarse grinding shell 203 and the plate 206, and the end of the coarse grinding shaft 212 is connected to the air pump 213; the coarse grinding knife mounting seat 214 is arranged at intervals along the axial direction of the coarse grinding shaft 212, and the coarse grinding knife mounting seat 214 is divided into an upper mounting seat 216 and a lower mounting seat 217, and a first through portion 218 is arranged on the upper mounting seat 216, and the first through portion 218 is arranged corresponding to the coarse grinding inlet 202; a hollow window 219 is arranged on the lower mounting seat 217, and the hollow window 219 is arranged corresponding to the second through portion 207; a clamping portion 215 is also arranged on the outer edge of the coarse grinding knife mounting seat 214, and a coarse grinding stop plate 221 is installed on the clamping portion 215 and surrounds the outer side of the coarse grinding blade 220. The two ends of the coarse crushing blade 220 are mounted on the upper mounting seat 216 and the lower mounting seat 217. The coarse crushing blade 220 forms an acute angle with the radial direction of the mounting position, and the coarse crushing blade 220 is distributed counterclockwise, so that the coarse crushing blade 220 crushes the Chinese medicinal materials by rotating around the coarse crushing rotating shaft 212. The filter cloth 222 is fixed on the empty window 219. The filter cloth 222 is set as a first layer of filter cloth 222 and a second layer of filter cloth 222. A gap is set between the first layer of filter cloth 222 and the second layer of filter cloth 222. The mesh aperture of the first layer of filter cloth 222 is set to 2mm-5mm, and the mesh aperture of the second layer of filter cloth 222 is less than 2mm, and it can be disassembled and replaced. The Chinese medicinal materials that do not meet the particle size requirements will continue to be crushed in the coarse crushing mechanism 200.

[0069] The present invention is provided with a coarse grinding mechanism 200 and an ultrafine grinding mechanism 300, which give full play to the advantages of different grinding methods. The coarse grinding mechanism 200 performs coarse grinding mainly by shearing force on the traditional Chinese medicine according to the characteristics of the traditional Chinese medicine. A coarse grinding blade 220 is arranged inside, so that the coarse grinding rotor 204 shears and impacts the traditional Chinese medicine multiple times every time it rotates one circle, and the grinding efficiency is high. The coarse grinding stop plate 221 is used to block the materials, and the double filter cloth 222 performs layered filtering to increase the grinding effect.

[0070] In addition, the raw material crusher also includes: a cyclone separator 400, a pulse dust collector 500, a collecting device 600, and a filtering system 700; the cyclone separator 400 separates small particles 900 in the mixture from the airflow, the pulse dust collector 500 separates the escaped powder in the mixture from the airflow, the collecting device 600 collects the small particles 900, and the filtering system 700 collects the escaped powder and discharges gas, which can be directly discharged into the atmosphere.

[0071] The air outlet pipe 109 of the ultrafine grinding mechanism 300 is connected to the cyclone separator 400 through the second pipe 920, the bottom of the cyclone separator 400 is connected to the collecting device 600, the top of the cyclone separator 400 is connected to the pulse dust collector 500, the pulse dust collector 500 is connected to the filtering system 700 through the third pipe 930, and the pulse dust collector 500 includes a multi-bag polyester material filter bag, which collects ultrafine escaping powder.

[0072] The present invention can efficiently adjust the parameters of the ultrafine grinding mechanism 300, such as air flow velocity, temperature, etc., through the control element 1200 to control the size and uniformity of the crushed particles. The cyclone separator 400 is integrated with the pulse dust collector 500, and the structure is compact, which greatly reduces the occupied area; the filter system 700 filters the escaping powder, and the gas can be directly discharged into the atmosphere to reduce the pollution to the environment.

[0073] Working principle: The control box 100 is powered on, the external gas source 800 is ready for gas supply, the gas is filtered and enters from the gas source processor 104, and the gas flow rate and other conditions are controlled by the solenoid valve 106 and the frequency generator 110, and the gas flows into the first pipeline 910; The coarse grinding mechanism 200 is running, and Chinese medicinal materials enter the coarse grinding rotor 204 in the coarse grinding shell 203 from the coarse grinding inlet 202. The coarse grinding blade 220 cooperates to strongly shear the large pieces of Chinese medicine, and the coarse grinding shaft 212 provides a lot of kinetic energy to the Chinese medicine during the rotation, so that the large pieces of Chinese medicine and the coarse grinding stop plate 221 liner produce a strong collision impact. The large pieces of Chinese medicine are continuously crushed into large particles under the action of shear force and impact force. When the particle size of the large particles is smaller than the mesh diameter of the filter cloth 222, they can pass through the coarse screen and be discharged through the coarse grinding outlet 208. The gas in the first pipeline 910 circulates, so that the Venturi nozzle 210 sprays gas to form a negative pressure area, and the gas is transported to the ultrafine grinding mechanism 300 by the Venturi nozzle 210 for the next step of crushing.

[0074] The large particles flow from the first pipe 910 to the air inlet pipe 302 on the upper crushing chamber 301, and the large particles and high-speed gas enter the upper plate 304 and the lower plate 312 of the inner cavity from the guide port 308. At this time, the external air source 800 performs secondary air supply to the blast port 317 on the lower crushing chamber 314, and the gas enters the upper plate 304 and the lower plate 312 of the inner cavity from the nozzle 311, and forms a high-pressure air flow vortex through the nozzle 311. The high-pressure air flow vortex drives the large particles to move at a high speed. During the movement, the speed is relatively high. The slow large particles collide strongly with the fast large particles and are crushed. The centrifugal force generated thereby causes the large particles to run around the periphery of the crushing chamber, and the small particles 900 with the required particle size are obtained. At the same time, the control element 1200 also hollows out the air flow rate and the cooling effect according to the current temperature value, so that the small particles 900 can converge upward to the inner cavity opening 305 through the center while ensuring the drug activity, and flow from the outlet pipe 109 to the second pipe 920. The small particles 900 and the escaped powder flow into the cyclone separator 400; The cyclone separator 400 discharges the small particles 900 in the gas in a spiral downward, and the crushed small particles 900 are collected in the collection device 600 through the collection port below the cyclone separator 400, and the remaining airflow is the escaping powder; The escaped powder enters the pulse dust collector 500, and the multi-bag polyester material filter bags on the inner wall of the pulse dust collector 500 filter the escaped powder and collect it on the inner wall of the multi-bag polyester material filter bags. The gas passes through the multi-bag polyester material filter bags and is discharged from the cyclone separator 400. The multi-bag polyester material filter bags are used for pressure difference reduction detection, and the track is shaken at a certain frequency to clean and collect the powder. Finally, the gas is discharged through the third pipeline 930, and the escaped powder is filtered for a second time through the filtration system 700, and the gas can be directly discharged into the atmosphere.

[0075] The raw material pulverizer for separation and purification of Chinese medicine preparations of the present invention can perform coarse pulverization, ultrafine pulverization, classification and collection of Chinese medicinal materials, dust purification, and finally obtain Chinese medicine broken wall micropowder (small particles 900), which improves the pulverization efficiency of Chinese medicine and the quality of broken wall micropowder and no dust emission. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description, and it is intended to include all changes that fall within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. An ultrafine grinding device, characterized in that: include: Ultrafine grinding mechanism (300); at least one temperature detection element (1000), which is arranged on the ultrafine pulverizing mechanism (300) to measure the air flow temperature in the ultrafine pulverizing mechanism (300) and / or the inner wall temperature of the ultrafine pulverizing mechanism (300), and output a temperature signal; at least one cooling unit (1100), the cooling unit being disposed at the bottom of the ultrafine grinding mechanism (300), and the cooling unit (1100) being capable of connecting to an external air source (800); a control element (1200), the control element (1200) being respectively connected to the temperature detection element (1000) and the cooling unit (1100) by signals, the control element (1200) being capable of receiving the temperature signal and adjusting the working state of the cooling unit (1100) based on the temperature signal; The ultrafine grinding mechanism (300) comprises: An upper crushing chamber (301), wherein an air inlet pipe (302) and an air outlet pipe (303) are installed at the top of the upper crushing chamber (301); An inner cavity upper plate, the inner cavity upper plate comprising an inner cavity upper plate (304), an inner cavity opening (305) arranged in the middle of the inner cavity upper plate (304), and an inner cavity pipe (306) extending in the inner cavity upper plate (304), one end of the inner cavity pipe (306) being connected to the inner cavity opening (305), a concave ring (307) being arranged on the outer periphery of the inner cavity opening (305), and a plurality of guide ports (308) being arranged in the concave ring (307); A nozzle ring (309), wherein a mounting platform (310) extends inwardly from the inner side of the nozzle ring (309), and a plurality of nozzles (311) are arranged on the mounting platform (310) along a circumferential direction, and the nozzles (311) are arranged through the mounting platform (310) and the nozzle ring (309); An inner cavity lower plate (312), wherein an inner cavity top column (313) is provided in the middle of the inner cavity lower plate (312); A lower crushing chamber (314), wherein the middle portion of the lower crushing chamber (314) is concave to form an inner chamber fixing platform (315), the outer edge of the inner chamber fixing platform (315) is convex to form an outer chamber ventilation platform (316), and an air blast port (317) is provided on the outer chamber ventilation platform (316), and the air blast port (317) can be connected to an external air source (800) through a pipeline; A movable clamp (318), the movable clamp (318) being buckled on the outer edges of the upper crushing chamber (301) and the lower crushing chamber (314); When the inner cavity upper plate (304) and the inner cavity lower plate (312) are respectively buckled on the upper and lower edges of the mounting platform (310), a spacing of the diameter of small particles (900) is retained between the inner cavity opening (305) and the inner cavity top column (313); when the upper crushing chamber (301) and the lower crushing chamber (314) are installed on the periphery of the inner cavity upper plate (304) and the inner cavity lower plate (312), the air inlet pipe (302) is located within the range of the concave ring (307), and the air outlet pipe (303) is connected to the inner cavity opening (305).

2. The ultrafine grinding device according to claim 1, characterized in that: The inner diameter of the air intake pipe (302) is greater than the sum of the inner diameters of any two of the guide openings (308); the angle formed by the air intake pipe (302) on the upper pulverizing chamber (301) is the air intake guide angle α; the inclination angle formed by the guide opening (308) on the upper plate (304) of the inner chamber is the guide placement angle β; the range of the air intake guide angle α is 30°-45°; the deviation range of the angle formed by each guide placement angle β and the air intake guide angle α is ±3.0°-7.5°.

3. The ultrafine grinding device according to claim 1, characterized in that: The nozzle ring (309) is provided with an air bubble hole (319) for vibration reduction and noise reduction, and the minor axis length of the air bubble hole (319) is between 30% and 50% of the thickness of the nozzle ring (309).

4. The ultrafine grinding device according to claim 1, characterized in that: The inner diameter of the nozzle (311) on the nozzle ring (309) is larger than the inner diameter of the nozzle (311) on the mounting platform (310); the portion of the nozzle (311) between the nozzle ring (309) and the mounting platform (310) is arranged to be horizontally inclined; the angle formed by the direction of the nozzle (311) and the line connecting the nozzle (311) to the center of the nozzle ring (309) is the nozzle initial angle γ1; the value of the nozzle initial angle γ1 and the calculation formula of the adjustment interval △γ1 are as follows: Where: γ1 is the initial angle of the nozzle, r p is the radius of the grading circle, R is the radius of the nozzle ring (309), r i is the radius of the inner cavity opening (305), n is the number of nozzles, γ 1max The maximum value of the nozzle initial angle, γ 1min The minimum value of the nozzle initial angle.

5. The ultrafine grinding device according to claim 1, characterized in that: Inside the ultrafine grinding mechanism (300), the diameter calculation formula of the small particles (900) at different air flow rates is: The inertial centrifugal force on the small particle (900) is: The centripetal force on the small particle (900) is: The fluid resistance of the small particle (900) is: Where: d is the diameter of the small particle (900), ρ s is the density of small particles (900), ρ is the airflow density, r p is the radius of the grading circle, u t is the tangential velocity of the fluid, u r is the centripetal velocity of the fluid, ζ is the drag coefficient; When 1<Re<10 3 When, ζ=18.5 / Re 0 .6 , Re is the Reynolds number, Re = du r ρ / μ, μ is the fluid viscosity; according to F C 、F D and f will reach equilibrium on the graded circle, namely: 。 6. The ultrafine grinding device according to claim 1, characterized in that: The inclination directions of the air guide port (308) and the air intake pipe (302) are arranged to be consistent.

7. A raw material pulverizer for separation and purification of traditional Chinese medicine preparations, comprising the ultrafine pulverizing device according to any one of claims 1 to 6, characterized in that: Also includes: A hinged box body (101) and a box cover (111); An air source processor (104), a solenoid valve (106), a frequency generator (110), a driver (102) and a control element (1200) are arranged in the box (101); One end of the gas source processor (104) is connected to an external gas source (800) via an air inlet interface (103), and the other end of the gas source processor (104) is connected to a solenoid valve (106) via a two-way connector (105); the solenoid valve (106) is directly connected to a first pipeline (910) via a three-way pipe (107); and the middle pipe (108) on the three-way pipe (107) is connected to a frequency generator (110) via an air supply pipe (109); The driver (102) is installed at the top of the box (101); the driver (102) is provided with an air supply port (114), an air outlet (115) and an adjusting knob (113); the air supply port (114) is connected to an external air source (800); and the adjusting knob (113) is used to adjust the air volume in the air outlet (115); A box cover (111), a touch screen (112) is mounted on the outer surface of the box cover (111), the touch screen (112) is electrically connected to a control element (1200), and the control element (1200) is electrically connected to a frequency generator (110).

8. The raw material pulverizer for separation and purification of Chinese medicine preparations according to claim 7, characterized in that: Also includes: A coarse pulverizing mechanism (200), the coarse pulverizing mechanism (200) comprising: A coarse grinding feed piece (201), wherein the coarse grinding feed piece (201) is funnel-shaped and has a coarse grinding feed opening (202) at the end; A coarse grinding shell (203), the top end of the coarse grinding shell (203) is connected to the coarse grinding feed piece (201), the coarse grinding feed port (202) is arranged through the coarse grinding shell (203), and a space for accommodating a coarse grinding rotor (204) is arranged in the coarse grinding shell (203); A coarse-crushing discharge piece (205), wherein a plate (206) is disposed on the top of the coarse-crushing discharge piece (205), and a second through portion (207) is disposed on the plate (206); a coarse-crushing discharge port (208) is disposed below the coarse-crushing discharge piece (205), and a counterweight (209) is installed on the outer wall of the coarse-crushing discharge port (208); A venturi nozzle (210), wherein the end of the venturi nozzle (210) is connected to the coarse crushing discharge port (208) via a locking member (211); An air pump (213), wherein the output end of the air pump (213) is connected to the coarse grinding rotor (204), and the air pump (213) is connected to the air outlet (115).

9. The raw material pulverizer for separation and purification of Chinese medicine preparations according to claim 8, characterized in that: The coarse grinding rotor (204) comprises: A coarse grinding shaft (212), the coarse grinding shaft (212) is vertically arranged and passes through the middle of the coarse grinding housing (203) and the plate (206), and the end of the coarse grinding shaft (212) is connected to the air pump (213); A coarse pulverizing knife mounting seat (214), wherein the coarse pulverizing knife mounting seat (214) is provided with an upper mounting seat (216) and a lower mounting seat (217) axially along the coarse pulverizing rotating shaft (212), wherein the upper mounting seat (216) is provided with a first through-portion (218), and the first through-portion (218) is provided corresponding to the coarse pulverizing material inlet (202); and the lower mounting seat (217) is provided with a hollow window (219), and the hollow window (219) is provided corresponding to the second through-portion (207); A coarse crushing blade (220), wherein two ends of the coarse crushing blade (220) are mounted on an upper mounting seat (216) and a lower mounting seat (217); A coarse crushing stop plate (221), the coarse crushing stop plate (221) surrounds the outside of the coarse crushing blade (220), and the upper and lower ends of the coarse crushing stop plate (221) are connected to the coarse crushing blade mounting seat (214); A filter cloth (222), wherein the filter cloth (222) is fixed on the empty window (219), the filter cloth (222) is arranged as a first layer of filter cloth (222) and a second layer of filter cloth (222), a gap is arranged between the first layer of filter cloth (222) and the second layer of filter cloth (222), the mesh aperture of the first layer of filter cloth (222) is arranged to be 2 mm-5 mm, and the mesh aperture of the second layer of filter cloth (222) is less than 2 mm.

10. The raw material pulverizer for separation and purification of traditional Chinese medicine preparations according to claim 9, characterized in that: Also includes: a cyclone separator (400) for separating small particles (900) in the mixture from the air flow; a pulse dust collector (500) for separating escaping powder in the mixture from the air flow; A collecting device (600), wherein the collecting device (600) collects small particles (900); The filtration system (700) collects the escaping powder and discharges gas, which can be discharged directly into the atmosphere.

Images