Traditional Chinese medicinal material processing method

Abstract

The invention belongs to the technical field of medicinal material processing, and particularly relates to a traditional Chinese medicinal material processing method. Comprising the following steps: S1, pretreatment: removing soil on the surfaces of traditional Chinese medicinal materials, and cutting the traditional Chinese medicinal materials into small pieces with equal weight; s2, primary drying: the pretreated traditional Chinese medicinal materials are put into a first drying chamber of a dryer for primary surface mucus drying, the temperature needs to be controlled at 60-70 DEG C in the stage, and traditional Chinese medicinal material residues are screened out through shaking of a sieve plate and put into a recovery chamber; s3, re-drying, wherein the traditional Chinese medicinal materials subjected to primary drying are rotationally screened to the surface layer and then thrown into a second drying chamber of the dryer for internal drying, and the temperature needs to be controlled to be 30-40 DEG C in the stage; s4, taking materials: taking out traditional Chinese medicinal material residues screened out in the recovery chamber, and taking out traditional Chinese medicinal material finished products subjected to secondary drying in the second drying chamber; through the drying method, the traditional Chinese medicinal materials can be prevented from being broken, stuck and excessively dried during drying, and the processing quality of the traditional Chinese medicinal materials is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of medicinal material processing, and particularly relates to a processing method for traditional Chinese medicinal materials. Background Art

[0002] Traditional drying methods for traditional Chinese medicinal materials mainly include sun drying, shade drying, and drying by baking. Different drying methods are selected according to the characteristics of different medicinal materials. With the development of technology, modern drying equipment for traditional Chinese medicinal materials has emerged. These devices mainly include hot air dryers. The hot air dryer makes the internal moisture of the medicinal materials escape by blowing in hot air, and has the advantages of low cost, less time-consuming, and high efficiency. When drying through a drying device, if a low-temperature air flow is used for drying, although the medicinal properties in the traditional Chinese medicinal materials can be preserved and the loss of drugs in the traditional Chinese medicinal materials can be prevented, the drying time is relatively long. If a high-temperature air flow is used for drying, although the drying time is short, the high temperature will cause the active ingredients inside the traditional Chinese medicinal materials to be damaged at high temperature, resulting in a reduction in the quality and efficacy of the medicinal materials. Therefore, the drying time needs to be strictly controlled.

[0003] In the prior art, there is also drying with a low-temperature air flow and then assisted by a stirring device for stirring. However, this is likely to cause the traditional Chinese medicinal materials to be broken under the stirring action after the moisture content of the traditional Chinese medicinal materials decreases, affecting the quality of the traditional Chinese medicinal materials. Especially for sticky traditional Chinese medicinal materials such as Chinese yam and polygonatum odoratum, if the drying device cannot dry quickly, it is likely to cause the traditional Chinese medicinal materials to stick to each other inside the drying device or among the traditional Chinese medicinal materials, and will be broken under the stirring action. If the stirring device is not used for stirring, the drying degree of the traditional Chinese medicinal materials at different positions in the dryer is different. Generally, the dryer needs to feed and discharge materials uniformly. Therefore, in order to ensure that the traditional Chinese medicinal materials can be completely dried, some traditional Chinese medicinal materials with a faster drying progress will be over-dried. Therefore, based on the above several situations, the quality of the traditional Chinese medicinal materials produced in the prior art is poor. For some high-grade precious medicinal materials, they not only have strict requirements on the size and weight of each portion of the medicinal materials, but also have relatively higher requirements on the dry-wet balance degree of the medicinal materials than ordinary medicinal materials. Therefore, the processing methods in the prior art are difficult to meet the above requirements simultaneously.

[0004] Based on the problems existing in the above prior art that it is impossible to ensure the processing quality of traditional Chinese medicinal materials while drying quickly, it is necessary to invent a processing method for traditional Chinese medicinal materials and a drying device suitable for this drying method. Summary of the Invention

[0005] To solve the above problems existing in the prior art, the present invention provides a processing method for traditional Chinese medicinal materials.

[0006] The object of the present invention can be achieved by the following technical solutions:

[0007] A processing method for traditional Chinese medicinal materials of the present invention includes the following steps:

[0008] S1: Pretreatment: Remove the soil on the surface of traditional Chinese medicinal materials, and cut and screen the traditional Chinese medicinal materials into small pieces of equal weight.

[0009] S2: Primary drying: Put the pretreated traditional Chinese medicinal materials into the first drying chamber of the dryer for primary drying of the surface mucus. At this stage, the temperature needs to be controlled at 60°C - 70°C, and the crushed residues of the traditional Chinese medicinal materials are screened out by shaking through the sieve plate and discharged into the recycling chamber.

[0010] S3: Secondary drying: After the primary drying is completed, the traditional Chinese medicinal materials are rotated and screened to the surface layer and then shaken into the second drying chamber of the dryer for internal drying. At this stage, the temperature needs to be controlled at 30°C - 40°C.

[0011] S4: Material taking: Take out the crushed residues of the traditional Chinese medicinal materials screened out in the recycling chamber, and take out the finished products of the traditional Chinese medicinal materials after secondary drying in the second drying chamber.

[0012] Further, a heating plate and a lifting component are arranged in the first drying chamber. The lifting component includes a lifting fan and a sieve plate. The lifting fan is rotatably arranged at the bottom of the sieve plate. The sieve plate rotates as the lifting fan rises and falls. The lifting and rotation of the sieve plate are used to turn over the traditional Chinese medicinal materials. The sieve plate turns over the traditional Chinese medicinal materials with reduced weight after primary drying to the surface layer and transfers them to the second drying chamber through the transfer channel on the side wall of the housing.

[0013] Further, a plurality of the transfer channels are spaced apart on the housing between the first drying chamber and the second drying chamber.

[0014] Further, a plurality of air inlet holes are arranged on the side wall of the housing along the moving direction of the lifting component. The lifting fan rotates and sucks air from the plurality of air inlet holes to lift the sieve plate. When the sieve plate rises, it sequentially blocks the plurality of air inlet holes to reduce the lifting force of the lifting fan and then descends.

[0015] Further, the sizes of the plurality of air inlet holes decrease sequentially from bottom to top.

[0016] Further, a elastic rod is arranged at the bottom of the first drying chamber. The elastic rod abuts against the bottom of the lifting component for buffering and shock absorption.

[0017] Further, the heating plate is arranged at the top of the first drying chamber and inside the air inlet holes.

[0018] Further, the sieve plate includes a central concave area and an inclined area surrounding the concave area.

[0019] Further, balls are arranged on the outer side wall of the sieve plate. The balls abut against the inner side wall of the first drying chamber.

[0020] Further, a spiral track is disposed around the first drying chamber along the moving direction of the lifting assembly, and the balls are rotatably disposed in the spiral track.

[0021] The beneficial effects of the present invention are as follows:

[0022] (1) By drying the Chinese herbal medicines in stages, first, the mucus secreted on the outer surface of the Chinese herbal medicines is dried by hot air at a relatively high temperature in the first drying chamber, quickly removing the excess moisture, so that the mucus that may be secreted on the surface is quickly dried and solidified, and at the same time, the effective components of the medicinal materials can be effectively prevented from being damaged by high temperature. Then, the moisture inside the Chinese herbal medicines is dried by cold air at a relatively low temperature in the second drying chamber. By separately drying in two steps of primary drying and re-drying, both the drying quality of the Chinese herbal medicines and the drying efficiency can be ensured, and at the same time, the adverse effects caused by the mucus secreted by the Chinese herbal medicines during the drying process can be avoided. Moreover, when the Chinese herbal medicines are placed in the first drying chamber for drying, when the Chinese herbal medicines are dried to a certain extent, their weight becomes lighter and they will be thrown out by the rotation of the sieve plate into the second drying chamber, realizing the screening of Chinese herbal medicines with different drying degrees, avoiding over-drying of Chinese herbal medicines with different drying degrees, and improving the processing quality of Chinese herbal medicines;

[0023] (2) When the sizes of the air inlets decrease sequentially from bottom to top, then as the lifting fan pushes the sieve plate to rise and gradually blocks some of the air inlets, the reduction rate of its air intake efficiency is greater than that in the normal situation. The higher the reduction rate of the lift of the lifting fan, the slower the lifting fan will decelerate and even move downward due to the lift being less than the gravity before it pushes the sieve plate to the top of the first drying chamber. Therefore, it can avoid the impact of the sieve plate and the lifting fan on the top of the first drying chamber, increase the service life of the equipment, reduce the failure rate of the equipment, and at the same time, the movement direction of the sieve plate and the lifting fan can be changed only by the air inlets being in abutting fit with the side wall of the sieve plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] For the convenience of those skilled in the art to understand, the present invention will be further described below with reference to the accompanying drawings.

[0025] Figure 1 is a flowchart of the processing method of the present invention;

[0026] Figure 2 is a schematic internal structure diagram of the present invention;

[0027] Figure 3 is a schematic external structure diagram of the present invention;

[0028] Figure 4 is a schematic structure diagram of the lifting assembly of the present invention rising to the top;

[0029] Figure 5 is a schematic structure diagram of the lifting assembly of the present invention descending to the transfer channel;

[0030] Figure 6 Schematic diagram of the lifting component of the present invention descending to the bottom to compress the elastic rod;

[0031] Explanation of reference numerals: 1. Housing; 2. First drying chamber; 3. Second drying chamber; 4. Recycling chamber; 5. Sieve plate; 6. Lift fan; 7. Elastic rod; 8. Heating plate; 9. Air inlet; 10. Transfer channel; 11. Ball; 12. Material taking opening of the second drying chamber; 13. Material taking opening of the recycling chamber; 14. Feeding port. Specific embodiments

[0032] In order to further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following will be described in detail with reference to the accompanying drawings and preferred embodiments regarding the specific embodiments, structures, features and effects of the present invention.

[0033] As Figures 1-6 shown, a traditional Chinese medicine processing method of the present invention includes the following steps:

[0034] S1: Pretreatment: Remove the soil on the surface of the traditional Chinese medicine, and cut and screen the traditional Chinese medicine into small pieces of equal weight;

[0035] S2: Primary drying: Put the pretreated traditional Chinese medicine into the first drying chamber 2 of the dryer for primary drying of the surface mucus. At this stage, the temperature needs to be controlled at 60°C to 70°C, and the traditional Chinese medicine residues are screened out by shaking through the sieve plate 5 into the recycling chamber 4;

[0036] S3: Secondary drying: After the primary drying is completed, the traditional Chinese medicine rotates and shakes to the surface layer and then is shaken into the second drying chamber 3 of the dryer for internal drying. At this stage, the temperature needs to be controlled at 30°C to 40°C;

[0037] S4: Material taking: Take out the traditional Chinese medicine residues screened out in the recycling chamber 4, and take out the finished traditional Chinese medicine products dried twice in the second drying chamber 3;

[0038] Since traditional Chinese medicinal materials are dried by sunlight or in the shade, when using a drying device for drying, if low-temperature air is used for drying, although the medicinal properties within the Chinese medicinal materials can be preserved and the loss of medicinal substances in the Chinese medicinal materials can be prevented, the drying time required is relatively long. If high-temperature air is used for drying, although the drying time is short, the high temperature will cause the active ingredients inside the Chinese medicinal materials to be damaged at high temperatures, resulting in a reduction in the quality and efficacy of the medicinal materials. Therefore, a balance needs to be found between the two. In order to improve the drying efficiency, if a stirring device is used to assist in stirring, it is easy to cause the Chinese medicinal materials to be broken under the stirring action after the moisture content decreases, affecting the quality of the Chinese medicinal materials. Especially for sticky Chinese medicinal materials such as Chinese yam and polygonatum odoratum, if the drying device cannot dry them quickly, it is easy to cause the Chinese medicinal materials to stick to each other inside the drying device or among the Chinese medicinal materials, as well as to be broken under the stirring action. If a stirring device is not used for stirring, the drying degrees of the Chinese medicinal materials at different positions inside the dryer are different. Generally, a dryer needs to feed and discharge materials uniformly. Therefore, in order to ensure that the Chinese medicinal materials can be completely dried, some Chinese medicinal materials with a faster drying progress will be over-dried. Therefore, based on the above several situations, the quality of the Chinese medicinal materials produced by the prior art is relatively poor;

[0039] In order to prevent sticky Chinese medicinal materials from secreting sticky liquids during the drying process and causing them to stick to each other or to the drying device, it is necessary to quickly dry the mucus on the surface of the Chinese medicinal materials and avoid breaking the Chinese medicinal materials during drying. Therefore, it is necessary to dry the Chinese medicinal materials in stages. First, in the first drying chamber 2, the mucus secreted on the outer surface of the Chinese medicinal materials is dried by hot air at a relatively high temperature. 60°C to 70°C is generally considered to be a more appropriate temperature. At this temperature, the Chinese medicinal materials can relatively quickly remove the excess moisture on the surface, enabling the mucus that may be secreted on the surface to be quickly dried and solidified, while effectively avoiding the damage of the high temperature to the active ingredients of the medicinal materials. Then, in the second drying chamber 3, the moisture inside the Chinese medicinal materials is dried by cold air at a relatively low temperature. By drying in two steps of primary drying and re-drying, both the drying quality and efficiency of the Chinese medicinal materials can be ensured, while also avoiding the adverse effects caused by the mucus secreted by the Chinese medicinal materials during the drying process. Moreover, when the Chinese medicinal materials are placed in the first drying chamber 2 for drying, when the Chinese medicinal materials are dried to a certain extent, their weight becomes lighter and they will be thrown out by the rotation of the sieve plate 5 into the second drying chamber 3, realizing the screening of Chinese medicinal materials with different drying degrees and avoiding the over-drying of Chinese medicinal materials with different drying degrees, thereby improving the processing quality of the Chinese medicinal materials.

[0040] Since there is no processing device in the prior art that can be applied to step-by-step drying, in order to be applicable to the step-by-step drying method, in this embodiment, the drying device internally includes a housing 1. Inside the housing 1, there are a first drying chamber 2, a second drying chamber 3, and a recovery chamber 4 from top to bottom. In order for Chinese medicinal materials to be able to execute multiple steps sequentially and be automatically dried in the processing device, it is necessary to automatically transfer the Chinese medicinal materials to the second drying chamber 3 after drying to a certain extent in the first drying chamber 2. To achieve this effect, it is necessary to ensure that the weights of the Chinese medicinal materials are the same in the pretreatment stage. Since the positions in the first drying chamber 2 are different, according to different drying stages, the moisture in the Chinese medicinal materials needs to be dried to a certain proportion, and then the transfer is automatically realized through the action of its dryer and the change in the self-weight of the Chinese medicinal materials.

[0041] Since in the above embodiment, it is necessary to automatically transfer the Chinese medicinal materials after drying a certain amount of moisture on their surfaces, a heating plate 8 and a lifting assembly are provided in the first drying chamber 2. The lifting assembly includes a lift fan 6 and a sieve plate 5. The lift fan 6 is rotatably arranged at the bottom of the sieve plate 5. The lift fan 6 includes fan blades and a motor. The motor is connected to the bottom of the sieve plate 5, and the fan blades are rotatably connected to the motor. The sieve plate 5 rotates as the lift fan 6 lifts. The lifting and rotation of the sieve plate 5 are used to turn over the Chinese medicinal materials. The sieve plate 5 turns over the Chinese medicinal materials whose weight has been reduced to the critical value that can be shaken and transferred after preliminary drying to the surface layer and transfers them to the second drying chamber 3 through the transfer channel 10 on the side wall of the housing 1.

[0042] The lift fan 6 is located below the sieve plate 5. When the lift fan 6 rotates, it can provide lift and lift the sieve plate 5 up. At the same time, the lift fan 6 will drive the accelerated flow of airflow. The accelerated flow of airflow can improve the drying efficiency of the surface moisture of Chinese medicinal materials. In the initial stage, the Chinese medicinal materials are placed on the sieve plate 5 in the first drying chamber 2 through the feeding port 14 at the top of the shell 1. After the lift fan 6 is started, since the Chinese medicinal materials on the sieve plate 5 have a certain weight, the sieve plate 5 will move up and down with the change in the lift generated by the rotation of the lift fan 6. While the lift fan 6 drives the sieve plate 5 to move up and down, the sieve plate 5 will also rotate. When the sieve plate 5 moves downward or upward quickly from a high point and rotates, the sieve plate 5 stops moving downward or upward after reaching the highest point or the lowest point, and the rotation speed also slows down. Then, the medicinal materials on the sieve plate 5 will be scattered along the original rotation direction under the action of inertia. , the Chinese medicinal materials on the sieve plate 5 will be sieved. Since the water content of the Chinese medicinal materials in the pretreatment stage is similar, the weight after cutting is equal, so their density is also equal. As the drying proceeds, the degree of drying gradually differs. Therefore, the Chinese medicinal materials with a lower degree of drying are heavier, the resulting scattering displacement is small and are at the bottom layer, while the Chinese medicinal materials with a higher degree of drying are lighter, the resulting scattering displacement is large and are at the top layer. Therefore, after drying to a certain degree, the Chinese medicinal materials at the top will be thrown into the transfer channel 10 due to the centrifugal force generated by the rotation during the downward movement of the sieve plate 5, and transferred to the second drying chamber 3 through the transfer channel 10 for further drying.

[0043] Furthermore, a plurality of transfer channels 10 are arranged at intervals on the shell 1 between the first drying chamber 2 and the second drying chamber 3; the transfer channels 10 connect the first drying chamber 2 and the second drying chamber 3, and the two openings of the transfer channels 10 are respectively located on the side walls of the shell 1 in the first drying chamber 2 and the second drying chamber 3. The transfer channels 10 are not arranged around the entire circumference in the first drying chamber 2, but are arranged at intervals, which can ensure the structural strength of the shell 1. At the same time, since the lifting assembly needs to move up and down in the first drying chamber 2, the inner wall structure between the interval-arranged transfer channels 10 can be used to slide and abut against the lifting assembly when it moves up and down, so that the lifting assembly can move smoothly.

[0044] Since the working condition of the lift fan 6 requires sufficient flowing air, in order to achieve a large amount of air flow to improve the drying efficiency of the Chinese medicinal materials, and at the same time to achieve the up and down movement of the lift fan 6, the lift fan 6 needs to continuously adjust the size of the lift. Therefore, in one embodiment, a plurality of air inlet holes 9 are provided on the side wall of the shell 1 along the moving direction of the lifting assembly. The lift fan 6 rotates and inhales air from the plurality of air inlet holes 9 to lift the sieve plate 5 up. The sieve plate 5 rises and blocks the plurality of air inlet holes 9 in sequence to reduce the lift of the lift fan 6 and then descends.

[0045] like Figures 2-6As shown in the figure, when the lift fan 6 is at the bottom of the first drying chamber 2, a plurality of air inlet holes 9 are completely open. At this time, the lift generated by the lift fan 6 after startup is the largest, and the air flow rate is the highest. When the lift fan 6 pushes the sieve plate 5 to gradually rise, since the outer side wall of the sieve plate 5 is a closed structure, the outer side wall of the sieve plate 5 will gradually block some of the air inlet holes 9 as the height increases until all the air inlet holes 9 are blocked after reaching the top. As the number of air inlet holes 9 blocked by the outer side wall of the sieve plate 5 increases, the air intake volume becomes less, and the lift generated by the lift fan 6 gradually decreases. Until the lift generated by the lift fan 6 can no longer support the weight of the Chinese medicinal materials on the sieve plate 5, the lift fan 6 and the sieve plate 5 will move downward synchronously. After the lift fan 6 and the sieve plate 5 move downward, the air inlet holes 9 are reopened for air intake, and the lift of the lift fan 6 is restored again, and the sieve plate 5 will move upward again, repeating this cycle of movement.

[0046] At the same time, a thermometer is arranged in the second drying chamber 3. The thermometer is electrically connected to the control device and is connected to the temperature regulating device through the control device to regulate the high-temperature gas entering the second drying chamber 3 through the first drying chamber 2.

[0047] Since the lift generated by the lift fan 6 is the largest when it is at the bottom, after it starts up until the sieve plate 5 blocks some of the air inlet holes 9, although the lift decreases, the lift fan 6 will push the sieve plate 5 to hit the top of the first drying chamber 2 before stopping under the action of inertia. Therefore, the failure rate of the equipment is likely to increase after long-term use. To avoid this problem, in one embodiment, the sizes of a plurality of air inlet holes 9 decrease sequentially from bottom to top;

[0048] When the sizes of the air inlet holes 9 decrease sequentially from bottom to top, as the lift fan 6 pushes the sieve plate 5 to rise and gradually blocks some of the air inlet holes 9, the reduction rate of its air intake efficiency is greater than that in the normal situation, and the lift weakening rate of the lift fan 6 is higher. Then, the lift fan 6 will slow down and move downward due to the lift being less than the gravity before it pushes the sieve plate 5 to the top of the first drying chamber 2. Therefore, it can avoid the excessive impact of the sieve plate 5 and the lift fan 6 on the top of the first drying chamber 2, increase the service life of the equipment, reduce the failure rate of the equipment, and at the same time, the movement direction of the sieve plate 5 and the lift fan 6 can be changed only by the abutting cooperation between the air inlet holes 9 and the side wall of the sieve plate 5.

[0049] In the above embodiment, when the lift fan 6 pushes the sieve plate 5 upward until it blocks part of the air inlet holes 9 and then the lift of the lift fan 6 becomes insufficient and it moves downward, it takes a certain distance for the lift fan 6 to regain sufficient lift. If the lift fan 6 and the sieve plate 5 reach the bottom of the first drying chamber 2 and then rise again, the speed of the up-and-down reciprocating movement of the sieve plate 5 will be slow. In order to increase the up-and-down movement speed of the sieve plate 5 and the speed of changing the moving direction of the sieve plate 5, in one embodiment, elastic rods 7 are provided at the bottom of the first drying chamber 2, and the elastic rods 7 are in contact with the bottom of the lifting assembly for buffering and shock absorption;

[0050] By providing the elastic rods 7 at the bottom of the first drying chamber 2, when the lift of the lift fan 6 is less than the gravity, the sieve plate 5 moves downward until it abuts against the elastic rods 7. This can not only form a buffering effect on the sieve plate 5 and the lift fan 6 to prevent damage to the equipment due to vibration, but also push the sieve plate 5 upward after the elastic rods 7 reset. With the elastic force of the elastic rods 7 and the lift of the lift fan 6, the sieve plate 5 can rise quickly and change direction quickly. The quick change of direction of the sieve plate 5 can generate sufficient vibration, which can improve the sieving effect on Chinese medicinal materials of different weights, making the stratification of Chinese medicinal materials of different weights more obvious. The Chinese medicinal materials with a higher drying degree lose moisture and their weight decreases and density decreases, and they move to the top layer under the vibration effect. While the Chinese medicinal materials with a lower drying degree have more moisture content, heavier weight and higher density, and are in the bottom layer under the vibration effect. The stratification of Chinese medicinal materials with different drying progress can prevent Chinese medicinal materials of different weights and different drying effects from being screened to the next stage. At the same time, vibration can prevent the mutual adhesion of the viscous liquids secreted on the surface of Chinese medicinal materials at the initial stage of drying.

[0051] In order to improve the drying efficiency, in one embodiment, the heating plate 8 is arranged at the top of the first drying chamber 2 and inside the air inlet holes 9; after the air flow enters the first drying chamber 2 along the air inlet holes 9, it will hit the heating plate 8 inside the air inlet holes 9. The heating plate 8 heats the air, and then the high-temperature air flow dries the Chinese medicinal materials, and quickly dries the surface of the Chinese medicinal materials with mucus through the high-temperature air flow to prevent the Chinese medicinal materials from sticking.

[0052] In one embodiment, the sieve plate 5 includes a central concave area and an inclined area surrounding the concave area; the concave area and the inclined area on the sieve plate 5 can better distinguish Chinese medicinal materials of different weights. The heavier Chinese medicinal materials are in the concave area, while the lighter Chinese medicinal materials will be gradually sieved to the inclined area under the up-and-down movement and rotation of the sieve plate 5. Then when the sieve plate 5 moves downward quickly, the Chinese medicinal materials on the top layer whose surfaces have been dried will have a certain weight loss, so the frictional force between the Chinese medicinal materials on the top layer and the Chinese medicinal materials below them decreases, and it is easier to be thrown out into the transfer channel 10 under the downward movement and rotation of the sieve plate 5. At the same time, the inclined structure of the sieve plate 5 can prevent the heavier Chinese medicinal materials at the beginning of drying from being thrown out into the transfer channel 10.

[0053] Since the direct contact between the outer wall of the sieve plate 5 and the first drying chamber 2 will result in a relatively large frictional force, which is not conducive to the up and down movement and rotation of the sieve plate 5. Therefore, in one embodiment, balls 11 are provided on the outer wall of the sieve plate 5, and the balls 11 are abutted against the inner wall of the first drying chamber 2. By embedding the balls 11 inside the outer wall of the sieve plate 5 and abutting the balls 11 against the side wall of the first drying chamber 2, the frictional force can be reduced, making the rotation of the sieve plate 5 smoother and the rotational force generated by the sieve plate 5 greater.

[0054] Furthermore, since the sieve plate 5 not only needs to move up and down but also needs to rotate, in one embodiment, a spiral track is provided around the first drying chamber 2 along the moving direction of the lifting assembly, and the balls 11 are rollingly arranged in the spiral track.

[0055] By providing a spiral track on the inner wall of the first drying chamber 2, the balls 11 rotate and rise and rotate and fall along the spiral track. The rotational force and centrifugal force generated by the rotation based on the spiral track are used for sieving the Chinese medicinal materials. The inclination angle of the spiral track is relatively large, which can be used for the rapid up and down movement of the sieve plate 5, generating sufficient rotational and vibration forces. Since transfer channels 10 are provided at intervals on the inner wall of the first drying chamber 2, the spiral track passes through the position between the two transfer channels 10.

[0056] On the side wall of the housing 1 of the second drying chamber 3 and the recovery chamber 4, a second drying chamber material taking port 12 and a recovery chamber material taking port 13 are respectively provided, and the Chinese medicinal materials in the second drying chamber 3 and the recovery chamber 4 are taken out through the two material taking ports. The partition between the second drying chamber 3 and the recovery chamber 4 is a fixed sieve plate 5, which can screen the crushed residues sieved out from the first drying chamber 2 into the recovery chamber 4 for recovery. And a feeding port 14 is provided at the top of the housing 1, and the Chinese medicinal materials are fed into the first drying chamber 2 through the feeding port 14, which can be added during the drying process. Different degrees of dried Chinese medicinal materials can be added into the first drying chamber 2 at the same time, and the Chinese medicinal materials need to be cut into small pieces of equal weight so that the sieve plate 5 can screen according to the weight. The recovery chamber material taking port 13 can be used for the discharge of the air flow generated by the lift fan 6. A mesh bag can be covered outside the recovery chamber material taking port 13. On the one hand, it is convenient for the air flow to flow out, and on the other hand, the Chinese medicinal material crushed residues can be blown into the mesh bag through the air flow.

[0057] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to make equivalent embodiments with equivalent changes. However, as long as it does not depart from the technical content of the present invention, any brief modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A method for processing Chinese medicinal materials, characterized in that: The following steps are involved: S1： Pretreatment: remove the dirt on the surface of Chinese medicinal materials, cut and screen the Chinese medicinal materials into small pieces of equal weight; S2: Primary drying: The pre-treated Chinese medicinal materials are placed in the first drying chamber of the dryer to initially dry the surface mucus. The temperature needs to be controlled at 60℃~70℃ in this stage, and the Chinese medicinal material residues are sieved out through the sieve plate into the recovery chamber; S3: Re-drying: After the initial drying, the Chinese medicinal materials are rotated and sieved to the surface layer and then thrown into the second drying chamber of the dryer for internal drying. The temperature needs to be controlled at 30℃~40℃ in this stage; S4: Taking materials: taking out the Chinese medicinal material residues screened out in the recovery room, and taking out the finished Chinese medicinal material products secondarily dried in the second drying room.

2. A Chinese medicinal material processing method according to claim 1, characterized in that: A heating plate and a lifting assembly are provided in the first drying chamber, and the lifting assembly includes a lift fan and a sieve plate. The lift fan is rotatably provided at the bottom of the sieve plate, and the sieve plate rotates as the lift fan is lifted and lowered. The lifting and rotation of the sieve plate are used to turn over the Chinese medicinal materials. The sieve plate turns over the Chinese medicinal materials whose weight is reduced after initial drying to the surface layer and transfers them to the second drying chamber through the transfer channel on the side wall of the shell.

3. A Chinese medicinal material processing method according to claim 2, characterized in that: A plurality of transfer passages are arranged at intervals on the shell between the first drying chamber and the second drying chamber.

4. A Chinese medicinal material processing method according to claim 2, characterized in that: A plurality of air inlet holes are arranged on the side wall of the shell along the moving direction of the lifting assembly. The lift fan rotates and draws air from the plurality of air inlet holes to lift the screen plate up. The screen plate rises and blocks the plurality of air inlet holes in sequence to reduce the lift of the lift fan and then descends.

5. A Chinese medicinal material processing method according to claim 4, characterized in that: The sizes of the plurality of air inlet holes decrease sequentially from bottom to top.

6. A Chinese medicinal material processing method according to claim 2, characterized in that: An elastic rod is arranged at the bottom of the first drying chamber, and the elastic rod abuts against the bottom of the lifting assembly for buffering and shock absorption.

7. A Chinese medicinal material processing method according to claim 4, characterized in that: The heating plate is arranged on the top of the first drying chamber and is located inside the air inlet.

8. A Chinese medicinal material processing method according to claim 2, characterized in that: The sieve plate comprises a central recessed area and an inclined area surrounding the recessed area.

9. A Chinese medicinal material processing method according to claim 2, characterized in that: A ball bearing is arranged on the outer side wall of the sieve plate, and the ball bearing abuts against the inner side wall of the first drying chamber.

10. A Chinese medicinal material processing method according to claim 9, characterized in that: A spiral track is arranged in the first drying chamber along the moving direction of the lifting component, and the balls are arranged to roll in the spiral track.

Images