A method for processing Chinese medicinal materials

Abstract

The present invention belongs to the technical field of medicinal material processing, and specifically relates to a method for processing Chinese medicinal materials; the method comprises the following steps: S1: pretreatment: removing dirt on the surface of the Chinese medicinal materials, and cutting the Chinese medicinal materials into small pieces of equal weight; S2: primary drying: placing the pretreated Chinese medicinal materials into the first drying chamber of a dryer to perform primary drying of surface mucus, and the temperature needs to be controlled at 60°C to 70°C at this stage, and the Chinese medicinal material residues are swung through a sieve plate and sieved out into a recovery chamber; S3: secondary drying: after the primary drying is completed, the Chinese medicinal materials are rotated and sieved to the surface layer and then swung into the second drying chamber of the dryer for internal drying, and the temperature needs to be controlled at 30°C to 40°C at this stage; S4: material collection: taking out the Chinese medicinal material residues sieved out in the recovery chamber, and taking out the finished Chinese medicinal materials dried for the second time in the second drying chamber; the drying method of the present invention can prevent the Chinese medicinal materials from being broken, stuck, and over-dried during drying, thereby improving the processing quality of the Chinese medicinal materials.

Description

Technical Field

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

[0002] Traditional methods for drying Chinese medicinal materials mainly include sun drying, shade drying, and oven drying. Different drying methods are selected according to the characteristics of different medicinal materials. With the development of science and technology, modern Chinese medicinal material drying equipment has emerged. These devices mainly include hot air dryers. Hot air dryers use hot air to release moisture from the medicinal materials, with the advantages of low cost, less time consumption, and high efficiency. However, when drying with a drying device, if a lower temperature airflow is used for drying, although the medicinal properties of the Chinese medicinal materials can be preserved and the loss of the medicine in the Chinese medicinal materials can be prevented, the drying time is longer. If a higher temperature airflow is used for drying, although the drying time is shorter, the high temperature will cause the active ingredients in the Chinese medicinal materials to be destroyed at high temperatures, resulting in reduced medicinal quality and efficacy. Therefore, the drying time needs to be strictly controlled.

[0003] In the prior art, drying is performed using a relatively low-temperature airflow, followed by auxiliary stirring using a stirring device. This can easily cause the Chinese medicinal materials to break apart under the stirring action after the moisture content is reduced, thus affecting the quality of the Chinese medicinal materials. Especially for sticky Chinese medicinal materials such as Chinese yam and Polygonatum, if the drying device cannot dry quickly, the Chinese medicinal materials can easily stick to the drying device or to each other, and then break apart under the stirring action. If the stirring device is not used for stirring, the Chinese medicinal materials at different positions in the dryer will have different drying degrees. Conventional dryers require uniform feeding and discharging. Therefore, to ensure that the Chinese medicinal materials are completely dried, some Chinese medicinal materials with faster drying progress may be over-dried. Therefore, based on the above-mentioned factors, the quality of the Chinese medicinal materials produced by the prior art is poor. Some high-grade and precious medicinal materials not only have strict requirements on the size and weight of each medicinal material, but also have relatively higher requirements on the dry-wet balance of the medicinal materials than ordinary medicinal materials. Therefore, the processing methods in the prior art are difficult to meet all these requirements simultaneously.

[0004] Based on the problem that the above existing technologies cannot quickly dry the Chinese medicinal materials while ensuring the processing quality of the Chinese medicinal materials, it is necessary to invent a Chinese medicinal material processing method and a drying device suitable for the drying method. Summary of the Invention

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

[0006] The purpose of the present invention can be achieved through the following technical solutions:

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

[0008] S1: Pretreatment: remove the dirt on the surface of the Chinese medicinal materials, cut and screen the Chinese medicinal materials into small pieces of equal weight;

[0009] S2: Primary Drying: The pre-treated Chinese medicinal materials are placed in the first drying chamber of the dryer to dry the surface mucus. The temperature in this stage needs to be controlled at 60℃~70℃, and the Chinese medicinal material residues are sieved through the sieve plate and sieved into the recovery chamber;

[0010] 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 in this stage needs to be controlled at 30℃~40℃;

[0011] S4: Taking out materials: taking out the Chinese medicinal material residues screened out in the recovery chamber, and taking out the finished Chinese medicinal material products dried twice in the second drying chamber.

[0012] Furthermore, 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 has been reduced after initial drying to the surface and transfers them to the second drying chamber through the transfer channel on the side wall of the shell.

[0013] Furthermore, a plurality of transfer channels are provided at intervals on the shell between the first drying chamber and the second drying chamber.

[0014] Furthermore, a plurality of air inlet holes are provided 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. The screen plate rises and blocks the plurality of air inlet holes in turn to reduce the lift of the lift fan and descend.

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

[0016] Furthermore, an elastic rod is provided 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.

[0017] Furthermore, the heating plate is arranged on the top of the first drying chamber and is located inside the air inlet.

[0018] Furthermore, the sieve plate includes a central recessed area and inclined areas surrounding the recessed area.

[0019] Furthermore, balls are provided on the outer side wall of the sieve plate, and the balls abut against the inner side wall of the first drying chamber.

[0020] Furthermore, 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.

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

[0022] (1) Drying the Chinese medicinal materials in stages. First, in the first drying chamber, hot air at a relatively high temperature is used to dry the mucus secreted from the outer surface of the Chinese medicinal materials, thereby quickly removing excess moisture and allowing the mucus that may be secreted on the surface to be quickly dried and solidified. At the same time, the damage to the effective components of the medicinal materials caused by high temperature is effectively avoided. Then, in the second drying chamber, cold air at a relatively low temperature is used to dry the moisture inside the Chinese medicinal materials. By drying the materials separately in the initial drying and secondary drying steps, both the drying quality and the drying efficiency of the Chinese medicinal materials can be guaranteed. At the same time, the adverse effects of the mucus secreted from the Chinese medicinal materials during the drying process can be avoided. Moreover, when the Chinese medicinal materials are placed in the first drying chamber for drying, after being dried to a certain degree, their weight becomes lighter and they are rotated and thrown out by the sieve plate into the second drying chamber, thereby screening the Chinese medicinal materials of different drying degrees, avoiding the Chinese medicinal materials of different drying degrees from being over-dried, and improving the processing quality of the Chinese medicinal materials.

[0023] (2) When the size of the air inlet decreases from bottom to top, the lift fan pushes the sieve plate upward and gradually blocks part of the air inlet. The air intake efficiency is reduced to a greater extent than normal. The higher the lift reduction rate of the lift fan, the lift fan will slowly decelerate until it moves downward before pushing the sieve plate to the top of the first drying chamber because the lift is less than the gravity. Therefore, the impact of the sieve plate and the lift fan on the top of the first drying chamber can be avoided, the service life of the equipment can be increased, and the failure rate of the equipment can be reduced. At the same time, the moving direction of the sieve plate and the lift fan can be changed only by the abutment between the air inlet and the side wall of the sieve plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] To facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

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

[0026] Figure 2 Schematic diagram of the internal structure of the present invention;

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

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

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

[0030] Figure 6 This is a structural schematic diagram of the lifting assembly of the present invention descending to the bottom to compress the elastic rod;

[0031] Explanation of the accompanying symbols: 1. Shell; 2. First drying chamber; 3. Second drying chamber; 4. Recovery chamber; 5. Screen plate; 6. Lift fan; 7. Elastic rod; 8. Heating plate; 9. Air inlet; 10. Transfer channel; 11. Ball bearing; 12. Second drying chamber material outlet; 13. Recovery chamber material outlet; 14. Feeding port. DETAILED DESCRIPTION

[0032] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0033] like Figures 1-6 As shown, a method for processing Chinese medicinal materials of the present invention comprises the following steps:

[0034] S1: Pretreatment: remove the dirt on the surface of the Chinese medicinal materials, cut and screen the Chinese medicinal materials into small pieces of equal weight;

[0035] S2: Primary drying: The pre-treated Chinese medicinal materials are placed in the first drying chamber 2 of the dryer to dry the surface mucus. The temperature should be controlled at 60°C to 70°C during this stage, and the Chinese medicinal material residues are sieved through the sieve plate 5 and sieved into the recovery chamber 4;

[0036] S3: Re-drying: After the primary drying, the Chinese medicinal materials are rotated and sieved to the surface layer and then thrown into the second drying chamber 3 of the dryer for internal drying. The temperature in this stage needs to be controlled at 30℃~40℃;

[0037] S4: Retrieving materials: taking out the Chinese medicinal material residues sieved out in the recovery chamber 4 and taking out the finished Chinese medicinal materials that have been dried twice in the second drying chamber 3;

[0038] Since traditional medicinal materials are dried in the sun or in the shade, when they are dried using a drying device, if lower temperature wind is used for drying, although the medicinal properties of the Chinese medicinal materials can be preserved and the loss of medicines in the Chinese medicinal materials can be prevented, the drying time is longer. If higher temperature wind is used for drying, although the drying time is shorter, the high temperature will cause the effective ingredients in the Chinese medicinal materials to be destroyed under high temperature, resulting in reduced quality and efficacy of the medicinal materials. Therefore, it is necessary to find a balance between the two. In order to improve the drying efficiency, if a stirring device is used to assist stirring, it is easy for the Chinese medicinal materials to be broken under the stirring action after the moisture content is reduced, affecting the quality of the Chinese medicinal materials. Especially for sticky Chinese medicinal materials such as yam and polygonatum, if the drying process cannot be completed quickly in the drying device, it is easy for the Chinese medicinal materials to stick to the inside of the drying device or to each other, and they may be broken by stirring. If no stirring device is used for stirring, the drying degree of Chinese medicinal materials at different positions in the dryer is different. Generally, the dryer needs to have uniform feeding and discharging. Therefore, in order to ensure that the Chinese medicinal materials can be completely dried, some Chinese medicinal materials with faster drying progress may be over-dried. Therefore, based on the above situations, the quality of the Chinese medicinal materials produced in the prior art is poor.

[0039] In order to prevent the sticky Chinese medicinal materials from secreting sticky liquids during the drying process, which may cause 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 to avoid breaking the Chinese medicinal materials during drying; therefore, it is necessary to dry the Chinese medicinal materials in stages. First, the mucus secreted on the outer surface of the Chinese medicinal materials is dried by hot air at a relatively high temperature in the first drying chamber 2. 60℃~70℃ is generally considered to be a more suitable temperature. At this temperature, excess moisture can be removed relatively quickly from the surface of the Chinese medicinal materials, so that the mucus that may be secreted on the surface can be quickly dried and solidified, while effectively avoiding the damage of high temperature to the effective 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 lower temperature. By drying separately in the two steps of initial drying and secondary drying, both the drying quality and the drying efficiency of the Chinese medicinal materials can be guaranteed. At the same time, the adverse effects of the mucus secreted by the Chinese medicinal materials during the drying process can be avoided. 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 degree, their weight becomes lighter and they will be rotated and thrown out by the sieve plate 5 into the second drying chamber 3, thereby realizing the screening of Chinese medicinal materials of different drying degrees, avoiding the Chinese medicinal materials of different drying degrees from being over-drying, and improving the processing quality of the Chinese medicinal materials.

[0040] Since there is no processing device that can be applied to step-by-step drying in the prior art, in order to be applicable to the step-by-step drying method, in this embodiment, the drying device includes a shell 1, and inside the shell 1, from top to bottom, there are a first drying chamber 2, a second drying chamber 3, and a recovery chamber 4. In order for Chinese medicinal materials to be able to realize the sequential execution of multiple steps and automatic drying in the processing device, it is necessary to automatically transfer the Chinese medicinal materials to the second drying chamber 3 after drying them to a certain degree in the first drying chamber 2. To achieve this effect, it is necessary to ensure that the weight of the Chinese medicinal materials is the same in the pretreatment stage. Since they are located at different positions in the first drying chamber 2, it is necessary to automatically transfer the Chinese medicinal materials after drying the moisture in the Chinese medicinal materials to a certain proportion according to different drying stages through the action of the dryer and the weight change of the Chinese medicinal materials themselves.

[0041] Since in the above embodiment, it is necessary to automatically transfer the Chinese medicinal materials after the moisture on their surface is dried to a certain degree, 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 blades and a motor. The motor is connected to the bottom of the sieve plate 5. The blades are rotatably connected to the motor. The sieve plate 5 rotates as the lift fan 6 is lifted and lowered. The lifting and rotation of the sieve plate 5 are used to turn the Chinese medicinal materials. The sieve plate 5 turns the Chinese medicinal materials whose weight is reduced to a critical value that will be thrown and transferred after initial 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 shell 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 air. The accelerated flow of air can improve the drying efficiency of the surface moisture of Chinese medicinal materials. In the initial stage, 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 up and down, the sieve plate 5 will also rotate. When the sieve plate 5 moves down or up quickly from a high point and rotates, the sieve plate 5 stops moving down or up 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 progresses, 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 to continue drying.

[0043] Furthermore, a number 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, it is necessary to continuously adjust the magnitude of the lift force of the lift fan 6. Therefore, in one embodiment, a plurality of air inlet holes 9 are provided on the side wall of the housing 1 along the moving direction of the lifting assembly. The lift fan 6 rotates and draws air from the plurality of air inlet holes 9 to lift the sieve plate 5 upward. The sieve plate 5 rises and blocks the plurality of air inlet holes 9 in sequence, thereby reducing the lift force of the lift fan 6 and descending.

[0045] like Figure 2-Figure 6As shown in , when the lift fan 6 is at the bottom of the first drying chamber 2, several air inlet holes 9 are fully open. At this time, the lift generated after the lift fan 6 is started 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 wall of the sieve plate 5 is a closed structure, the outer wall of the sieve plate 5 will gradually block part 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 wall of the sieve plate 5 increases, the air intake 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 down synchronously. After the lift fan 6 and the sieve plate 5 move down, the air inlet holes 9 are reopened to intake air, and the lift of the lift fan 6 is restored, and the sieve plate 5 will move up again, and the reciprocating motion is repeated.

[0046] At the same time, a thermometer is set in the second drying chamber 3, the thermometer is electrically connected to the control device, and is connected to the temperature regulating device controlled by 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 fan 6 generates the greatest lift when it is at the bottom, after it is started, until the sieve plate 5 blocks part 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 under the action of inertia before stopping. This may easily cause the failure rate of the equipment to increase after long-term use. In order to avoid this problem, in one embodiment, the sizes of the air inlet holes 9 decrease from bottom to top.

[0048] When the size of the air inlet 9 decreases from bottom to top, the lift fan 6 pushes the sieve plate 5 up and gradually blocks part of the air inlet 9. The air intake efficiency is reduced to a greater extent than normal. The higher the lift reduction rate of the lift fan 6, the lift fan 6 will slowly decelerate until it moves downward before pushing the sieve plate 5 to the top of the first drying chamber 2 because the lift is less than the gravity. Therefore, it can avoid 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, and reduce the failure rate of the equipment. At the same time, the moving direction of the sieve plate 5 and the lift fan 6 can be changed only by the abutment between the air inlet 9 and the side wall of the sieve plate 5.

[0049] Since in the above embodiment, when the lift fan 6 pushes the sieve plate 5 to move upward until it blocks part of the air inlet holes 9, resulting in insufficient lift of the lift fan 6 and moving downward, the lift fan 6 needs to travel a certain distance to regain sufficient lift. If the lift fan 6 and the sieve plate 5 are allowed to reach the bottom of the first drying chamber 2 and then rise again, the speed of the sieve plate 5 moving up and down will be slow. In order to increase the speed of the sieve plate 5 moving up and down and the speed at which the sieve plate 5 changes its moving direction, in one embodiment, an elastic rod 7 is provided at the bottom of the first drying chamber 2, and the elastic rod 7 abuts against the bottom of the lifting assembly for buffering and shock absorption.

[0050] By arranging an elastic rod 7 at the bottom of the first drying chamber 2, when the lift force of the lift fan 6 is less than the gravity, the sieve plate 5 moves down until it contacts the elastic rod 7, which not only forms a buffering effect on the sieve plate 5 and the lift fan 6 to avoid vibration damage to the equipment, but also pushes the sieve plate 5 up after the elastic rod 7 is reset. The elastic force of the elastic rod 7 and the lift force of the lift fan 6 enable the sieve plate 5 to rise and change direction quickly. The rapid change of direction of the sieve plate 5 can produce sufficient vibration, which can improve the screening effect of Chinese medicinal materials of different weights and make the stratification of Chinese medicinal materials of different weights more obvious. Chinese medicinal materials with higher drying degree lose water and their weight and density decrease, and move to the top position under the action of vibration. Chinese medicinal materials with lower drying degree have more water content, are heavier and have higher density, and are located at the bottom position under the action of vibration. By stratifying Chinese medicinal materials with different drying progress, Chinese medicinal materials with different weights and different drying effects can be prevented from being sieved to the next stage. At the same time, vibration can prevent the viscous liquid secreted on the surface of Chinese medicinal materials in the early stage of drying from sticking to each other.

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

[0052] In one embodiment, the sieve plate 5 includes a concave area in the center 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 action of the up and down movement and rotation of the sieve plate 5. Then, when the sieve plate 5 moves down quickly, the Chinese medicinal materials on the top layer that are dried will experience a certain weight loss, and the friction between the Chinese medicinal materials on the top layer and the Chinese medicinal materials below it will be reduced. Then, under the action of the downward movement and rotation of the sieve plate 5, they will be more easily thrown out into the transfer channel 10. At the same time, the inclined structure of the sieve plate 5 can prevent the heavier Chinese medicinal materials that are just beginning to be dried from being thrown out into the transfer channel 10.

[0053] Since the outer wall of the sieve plate 5 is in direct contact with the first drying chamber 2, which will cause a large friction force, it is not conducive to the up and down movement and rotation of the sieve plate 5. Therefore, in one embodiment, a ball 11 is provided on the outer wall of the sieve plate 5, and the ball 11 abuts against the inner wall of the first drying chamber 2; by embedding the ball 11 inside the outer wall of the sieve plate 5 and abutting the ball 11 against the side wall of the first drying chamber 2, the friction force can be reduced, the rotation of the sieve plate 5 can be smoother, and the rotational force generated by the sieve plate 5 is 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 in the first drying chamber 2 along the moving direction of the lifting assembly, and the balls 11 are rolled in the spiral track;

[0055] By providing a spiral track on the inner wall of the first drying chamber 2, the balls 11 rotate along the track, ascending and descending. This rotational and centrifugal force generated by the spiral track is used to sieve the Chinese medicinal materials. The spiral track has a large inclination angle, which allows for the rapid ascending and descending of the sieve plate 5, generating sufficient rotational and vibratory forces. Because transfer channels 10 are spaced apart on the inner wall of the first drying chamber 2, the spiral track passes between two transfer channels 10.

[0056] A second drying chamber material dispensing port 12 and a recovery chamber material dispensing port 13 are respectively provided on the side walls of the shell 1 of the second drying chamber 3 and the recovery chamber 4. The Chinese medicinal materials in the second drying chamber 3 and the recovery chamber 4 can be taken out through the two dispensing ports. The partition between the second drying chamber 3 and the recovery chamber 4 is a fixed sieve plate 5, which can sieve the debris sieved out from the first drying chamber 2 and recycle it into the recovery chamber 4. A feeding port 14 is provided at the top of the shell 1, through which materials are added to the first drying chamber 2. Materials can be added during the drying process, and Chinese medicinal materials of different degrees of drying can be added to the first drying chamber 2 at the same time. The Chinese medicinal materials need to be cut into small pieces of equal weight so that the sieve plate 5 can screen them according to weight. The recovery chamber material dispensing port 13 can be used to discharge the airflow generated by the lift fan 6. A mesh bag can be provided on the outside of the recovery chamber material dispensing port 13. On the one hand, this facilitates the outflow of airflow, and on the other hand, it can blow the Chinese medicinal material debris into the mesh bag through the airflow.

[0057] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make some changes or modifications to equivalent embodiments using the technical contents disclosed above. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still 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 the 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 dry the surface mucus. The temperature in this stage needs to be controlled at 60℃~70℃, and the Chinese medicinal material residues are sieved through the sieve plate and sieved 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 in this stage needs to be controlled at 30℃~40℃; S4: Retrieving materials: Retrieving the Chinese medicinal material residues sieved out from the recovery chamber and taking out the finished Chinese medicinal material products dried twice in the second drying chamber; The first drying chamber is provided with a heating plate and a lifting assembly, the lifting assembly including a lift fan and a sieve plate, the lift fan being rotatably arranged at the bottom of the sieve plate, the sieve plate rotating as the lift fan is raised and lowered, the lifting and rotation of the sieve plate being used to turn over the Chinese medicinal materials, the sieve plate turning over the Chinese medicinal materials that have lost weight after initial drying to the surface layer and transferring them to the second drying chamber through a transfer channel on the side wall of the housing; A plurality of transfer passages are provided between the first drying chamber and the second drying chamber on the housing at intervals; A plurality of air inlet holes are provided 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 sieve plate. The sieve plate rises and blocks the plurality of air inlet holes in turn to reduce the lift of the lift fan and descend. The sizes of the plurality of air inlet holes decrease in turn from bottom to top.

2. A Chinese medicinal material processing method according to claim 1, characterized in that: An elastic rod is provided 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.

3. A Chinese medicinal material processing method according to claim 1, characterized in that: The heating plate is arranged on the top of the first drying chamber and inside the air inlet.

4. A Chinese medicinal material processing method according to claim 1, characterized in that: The sieve plate includes a central recessed area and inclined areas surrounding the recessed area.

5. A Chinese medicinal material processing method according to claim 1, characterized in that: Ball bearings are provided on the outer side wall of the sieve plate, and the ball bearings abut against the inner side wall of the first drying chamber.

6. A Chinese medicinal material processing method according to claim 5, 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