Continuous clean conveying and processing equipment for chinese herbal medicine raw materials

Abstract

The present application relates to Chinese herbal medicine processing equipment technical field, specifically to a kind of Chinese herbal medicine raw material continuous clean conveying treatment equipment;Including rack, sealed conveying channel, multiple main conveying units, multiple jacking mechanisms, multiple mounting frames, multiple auxiliary conveying units, clean gas supply device and negative pressure generating device, sealed conveying channel ensures that Chinese herbal medicine raw material is always in closed clean environment during conveying;Main conveying unit and auxiliary conveying unit are staggered, so that material is continuously moved forward under the drive of main conveying unit, auxiliary conveying unit can be lifted under the drive of jacking mechanism, and material is smoothly guided to the inside of material taking and placing channel, to facilitate operator to complete material taking and placing, to facilitate operator to complete Chinese herbal medicine raw material processing at the processing procedure, realize on-line material taking and post-processing material returning operation under closed condition, ensure the continuity and efficiency of conveying process.

Description

Technical Field

[0001] This invention relates to the field of traditional Chinese medicine processing equipment, and in particular to a continuous clean conveying and processing equipment for traditional Chinese medicine raw materials. Background Technology

[0002] The processing of Chinese herbal medicine raw materials typically includes initial processing steps such as washing, sorting, slicing, or cutting after harvesting, as well as processing steps such as steaming, sun-drying, and stir-frying according to traditional methods. During these processes, the raw materials need to be transferred and transported multiple times between each step. Currently, Chinese herbal medicine processing enterprises mainly rely on manual handling, trolley transport, or open-type belt conveyors for raw material transportation.

[0003] However, existing methods for transporting Chinese herbal medicine raw materials have several drawbacks: First, frequent human contact can easily cause secondary contamination of the herbs, affecting their cleanliness and quality. Second, during open transport, the herbs are exposed to the workshop environment, making them susceptible to dust and impurities, which does not meet the requirements of Good Manufacturing Practices (GMP). Third, the transport process is discontinuous, requiring temporary storage between different processes, which reduces production efficiency and easily leads to material mixing or batch contamination. Fourth, existing transport equipment lacks proactive environmental control measures that combine directional clean airflow supply with negative pressure suction, making it impossible to form a stable positive clean airflow throughout the transport process to isolate external pollution sources. Furthermore, it is difficult to promptly remove dust, moisture, and volatile components released by the herbs during transport, leading to deterioration of air quality inside the transport channel. This not only affects the quality of the herbs but also poses a risk of cross-contamination between different batches of materials.

[0004] In summary, existing methods for transporting Chinese herbal medicine raw materials suffer from technical problems such as uncontrollable cleanliness of the transport environment, discontinuous transport process, and inability to perform online material handling under closed conditions. Summary of the Invention

[0005] The purpose of this invention is to provide a continuous clean conveying and processing equipment for Chinese herbal medicine raw materials, which aims to solve the technical problems of existing conveying methods for Chinese herbal medicine raw materials, such as uncontrollable cleanliness of the conveying environment, discontinuous conveying process, and inability to realize online material handling under closed conditions.

[0006] To achieve the above objectives, the present invention provides a continuous clean conveying and processing equipment for Chinese herbal medicine raw materials, including a frame, a sealed conveying channel, multiple main conveying units, multiple lifting mechanisms, multiple mounting frames, multiple auxiliary conveying units, a clean gas supply device, and a negative pressure generating device. The frame is arranged along the arrangement direction of multiple processing steps of the Chinese herbal medicine raw materials. The sealed conveying channel is provided at the top of the frame. The front end of the sealed conveying channel is provided with a feeding port, and the end end of the sealed conveying channel is provided with a discharging port. Multiple picking and discharging channels are connected to the bottom of the sealed conveying channel. Each picking and discharging channel corresponds to a processing step of a Chinese herbal medicine raw material, and each picking and discharging channel is provided with an opening and closing door on its side. The main conveying unit is provided between the feeding port and the first feeding channel, between two adjacent feeding channels, and between the last feeding station and the unloading port. The lifting mechanism is provided at the bottom of the inner side of each feeding channel, and the mounting frame is provided at the top of each lifting mechanism. The auxiliary conveying unit is provided at each mounting frame. The multiple main conveying units and the multiple auxiliary conveying units are arranged alternately and are all used to carry and convey Chinese herbal medicine raw materials. The clean gas supply device is located at the front end of the sealed conveying channel and is used to introduce clean gas into the sealed conveying channel. The negative pressure generating device is located at the rear end of the sealed conveying channel and is used to generate a directional negative pressure airflow within the sealed conveying channel.

[0007] Each of the lifting mechanisms includes a limiting shaft, a threaded rod, a connecting bearing, and a drive assembly. The limiting shaft is rotatably disposed at the bottom of the material handling channel. The threaded rod is internally threaded onto the limiting shaft. The top end of the threaded rod is connected to the bottom of the mounting frame via the connecting bearing. A limiting rod is provided at the bottom of the mounting frame. The end of the limiting rod away from the mounting frame passes through the bottom of the material handling channel. The drive assembly is also provided on the outer side of the bottom of the material handling channel. The output end of the drive assembly is mechanically driven by the limiting shaft.

[0008] Each of the drive components includes a servo motor, a gear reducer, and an output gear. The servo motor is installed on the outer side of the bottom of the material handling channel. The output end of the servo motor is provided with the gear reducer, and the output end of the gear reducer is provided with the output gear. A transmission gear is provided on the outside of the limiting shaft, and the output gear meshes with the transmission gear.

[0009] Each of the limiting shafts includes a shaft body and two limiting rings. The shaft body is rotatably disposed at the bottom of the material handling channel, and two limiting rings are disposed on the outside of the shaft body, with the two limiting rings located on the inner and outer sides of the material handling channel, respectively.

[0010] Each of the limiting rings is provided with an annular groove, and each annular groove is provided with a ball bearing unit, which makes rolling contact with the bottom wall of the material feeding and discharging channel.

[0011] The clean gas supply device includes an air purification unit and a blower. The air purification unit is installed at the air inlet of the blower, and the output end of the blower is connected to the sealed delivery channel through a pipe. The air purification unit is used to filter and purify the air entering the blower.

[0012] The negative pressure generating device includes a negative pressure fan and a filter unit. The suction end of the negative pressure fan is connected to the tail end of the sealed conveying channel through a negative pressure pipe. The exhaust end of the negative pressure fan is equipped with the filter unit, which is used to filter and purify the gas extracted from the sealed conveying channel before discharging it.

[0013] The continuous clean conveying and processing equipment for Chinese herbal raw materials also includes multiple protective shells. Each of the material handling channels is equipped with a protective shell at its bottom, and the protective shells are located outside the corresponding output gear and transmission gear.

[0014] Each of the protective shells is connected to an injection tube, and a sealing plug is provided at the end of each injection tube away from the protective shell.

[0015] This invention discloses a continuous clean conveying and processing equipment for traditional Chinese medicine raw materials, comprising a frame, a sealed conveying channel, multiple main conveying units, multiple lifting mechanisms, multiple mounting frames, multiple auxiliary conveying units, a clean gas supply device, and a negative pressure generating device. The frame is arranged along the multiple processing steps, allowing seamless integration with existing traditional Chinese medicine processing production lines. The sealed conveying channel is a square-section, enclosed structure, ensuring that the raw materials remain in a closed, clean environment during conveying, preventing the intrusion of external dust and impurities. The main and auxiliary conveying units are staggered, allowing the material to move continuously forward under the drive of the main conveying units. Upon reaching each pick-up and drop-off channel, the auxiliary conveying units can rise and fall under the drive of the lifting mechanisms, smoothly guiding the material into the interior of the pick-up and drop-off channel. This facilitates the operation of picking up and dropping materials by opening and closing the doors, enabling operators to complete the processing of the raw materials at that step. This achieves online material picking and post-processing return operations under closed conditions, ensuring the continuity and efficiency of the conveying process. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the continuous clean conveying and processing equipment for Chinese herbal raw materials according to the first embodiment of the present invention.

[0018] Figure 2 This is a side view of the continuous clean conveying and processing equipment for Chinese herbal raw materials according to the first embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the internal structure of the sealed conveying channel in the first embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram of the lifting mechanism in the first embodiment of the present invention.

[0021] Figure 5 This invention provides Figure 4 A magnified view of the local structure at point A.

[0022] Figure 6 This is a schematic diagram of the lifting mechanism in the second embodiment of the present invention.

[0023] 101-Frame, 102-Sealed conveying channel, 103-Main conveying unit, 104-Mounting frame, 105-Auxiliary conveying unit, 106-Threaded rod, 107-Connecting bearing, 108-Servo motor, 109-Gear reducer, 110-Output gear, 111-Shaft, 112-Limit ring, 113-Air purification unit, 114-Blower, 115-Negative pressure blower, 116-Filter unit, 117-Feeding port, 118-Discharging port, 119-Material handling channel, 120-Opening door, 121-Limit rod, 122-Transmission gear, 123-Annular groove, 124-Ball bearing unit, 201-Protective shell, 202-Injection pipe, 203-Sealing plug. Detailed Implementation

[0024] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0025] First embodiment: Please see Figures 1 to 5 ,in Figure 1 This is a schematic diagram of the structure of the continuous clean conveying and processing equipment for Chinese herbal raw materials according to the first embodiment. Figure 2 This is a side view of the continuous clean conveying and processing equipment for Chinese herbal raw materials according to the first embodiment. Figure 3 This is a schematic diagram of the internal structure of the sealed conveying channel in the first embodiment. Figure 4 This is a schematic diagram of the lifting mechanism in the first embodiment. Figure 5 yes Figure 4 A magnified view of the local structure at point A.

[0026] This invention provides a continuous clean conveying and processing equipment for traditional Chinese medicine raw materials: It includes a frame 101, a sealed conveying channel 102, multiple main conveying units 103, multiple lifting mechanisms, multiple mounting frames 104, multiple auxiliary conveying units 105, a clean gas supply device, and a negative pressure generating device. Each lifting mechanism includes a limiting shaft, a threaded rod 106, a connecting bearing 107, and a drive assembly. Each drive assembly includes a servo motor 108, a gear reducer 109, and an output gear 110. Each limiting shaft includes a shaft body 111 and two limiting rings 112. The clean gas supply device includes an air purification unit 113 and a blower 114. The negative pressure generating device includes a negative pressure fan 115 and a filter unit 116. This solution solves the technical problems of existing methods for conveying traditional Chinese medicine raw materials, such as uncontrollable cleanliness of the conveying environment, discontinuous conveying process, and the inability to perform online material handling under closed conditions. It is understood that the aforementioned solution can be used in the structure of a continuous clean conveying and processing equipment for traditional Chinese medicine raw materials.

[0027] In this specific embodiment, the frame 101 is arranged along the direction of multiple processing steps of the Chinese herbal medicine raw materials. The top of the frame 101 is provided with the sealed conveying channel 102. The front end of the sealed conveying channel 102 is provided with the feeding port 117, and the end of the sealed conveying channel 102 is provided with the discharging port 118. The bottom of the sealed conveying channel 102 is connected to multiple picking and discharging channels 119. Each picking and discharging channel 119 corresponds to a processing step of a Chinese herbal medicine raw material. Each picking and discharging channel 119 is provided with an opening and closing door 120 on its side. The main conveying unit 103 is provided between the feeding port 117 and the first feeding channel 119, between two adjacent feeding channels 119, and between the last feeding station and the unloading port 118. The lifting mechanism is provided at the bottom of the inner side of each feeding channel 119, and the mounting frame 104 is provided at the top of each lifting mechanism. The auxiliary conveying unit 105 is provided at each mounting frame 104. The multiple main conveying units 103 and the multiple auxiliary conveying units 105 are arranged alternately and are all used to carry and convey Chinese herbal medicine raw materials. The clean gas supply device is located at the front end of the sealed conveying channel 102 and is used to introduce clean gas into the sealed conveying channel 102. The negative pressure generating device is located at the rear end of the sealed conveying channel 102 and is used to form a directional negative pressure airflow in the sealed conveying channel 102.

[0028] In this embodiment, the frame 101 is arranged along the direction of multiple processing steps, enabling the equipment to seamlessly connect with existing Chinese herbal medicine processing production lines. The sealed conveying channel 102 is a square-section closed structure, ensuring that the Chinese herbal medicine raw materials are always in a closed and clean environment during the conveying process, avoiding the intrusion of external dust and impurities. The main conveying unit 103 and the auxiliary conveying unit 105 are arranged alternately, so that the material moves forward continuously under the drive of the main conveying unit 103. When it reaches each pick-up and drop-off channel 119, the auxiliary conveying unit 105 can be raised and lowered under the drive of the lifting mechanism to smoothly guide the material into the interior of the pick-up and drop-off channel 119. This allows the operator to pick up and drop off the material through the opening and closing door 120, facilitating the processing of the Chinese herbal medicine raw materials at this processing step. This realizes online material picking and post-processing material return operations under closed conditions, ensuring the continuity and efficiency of the conveying process.

[0029] The limiting shaft is rotatably mounted at the bottom of the material handling channel 119. The internal thread of the limiting shaft is connected to the threaded rod 106. The top end of the threaded rod 106 is connected to the bottom of the mounting frame 104 through the connecting bearing 107. The bottom of the mounting frame 104 is provided with a limiting rod 121. The end of the limiting rod 121 away from the mounting frame 104 passes through the bottom of the material handling channel 119. The servo motor 108 is mounted on the outside of the bottom of the material handling channel 119. The output end of the servo motor 108 is provided with the gear reducer 109. The output end of the gear reducer 109 is provided with the output gear 110. The external side of the limiting shaft is provided with a transmission gear 122. The output gear 110 meshes with the transmission gear 122.

[0030] In this embodiment, the servo motor 108 drives the output gear 110 to rotate after being reduced in speed by the gear reducer 109. The output gear 110 drives the transmission gear 122 and the limiting shaft to rotate. Since the limiting shaft is threadedly engaged with the threaded rod 106, and the threaded rod 106 cannot rotate with the limiting shaft due to the restriction of the limiting rod 121, the rotational motion of the limiting shaft is converted into the lifting motion of the threaded rod 106. The threaded rod 106 drives the mounting frame 104 and the auxiliary conveying unit 105 to rise and fall smoothly through the connecting bearing 107. The gear reducer 109 enables the high speed of the servo motor 108 to be converted into a large torque output after reduction, ensuring that the lifting mechanism has sufficient lifting force to lift the Chinese herbal medicine raw materials. At the same time, the servo motor 108 can achieve precise speed and position control, so that the auxiliary conveying unit 105 can accurately stop at the rising or falling position, ensuring the accuracy and reliability of material guidance.

[0031] Secondly, the shaft 111 is rotatably disposed at the bottom of the material pick-up and drop-off channel 119, and two limiting rings 112 are disposed on the outside of the shaft 111, with the two limiting rings 112 located on the inner and outer sides of the material pick-up and drop-off channel 119 respectively.

[0032] In this embodiment, two limiting rings 112 are provided on the outside of the shaft body 111, and the two limiting rings 112 are respectively located on the inner and outer sides of the bottom wall of the material feeding channel 119. The two limiting rings 112 are used to axially limit the shaft body 111 to prevent the shaft body 111 from moving axially during rotation.

[0033] Meanwhile, each of the limiting rings 112 is provided with an annular groove 123, and each of the annular grooves 123 is provided with a ball bearing unit 124, which makes rolling contact with the bottom wall of the material feeding channel 119.

[0034] In this embodiment, by setting an annular groove 123 on the limiting ring 112 and setting a ball bearing unit 124 in the annular groove 123, the sliding friction between the limiting ring 112 and the bottom wall of the material pick-up and drop channel 119 is transformed into rolling friction, which greatly reduces the frictional resistance and wear when the limiting ring 112 rotates and extends the service life of the limiting shaft.

[0035] In addition, the air inlet end of the blower 114 is provided with the air purification unit 113, and the output end of the blower 114 is connected to the sealed conveying channel 102 through a pipe. The air purification unit 113 is used to filter and purify the air entering the blower 114.

[0036] In this embodiment, by setting an air purification unit 113 at the air inlet of the blower 114, the outside air is filtered and purified before entering the blower 114. The purified clean gas is pressurized by the blower 114 and sent to the front end of the sealed conveying channel 102 through a pipeline. A positive clean airflow is formed in the sealed conveying channel 102, which can carry the dust and moisture released by the medicinal materials during the conveying process to the rear end.

[0037] Furthermore, the suction end of the negative pressure fan 115 is connected to the tail end of the sealed conveying channel 102 through a negative pressure pipe, and the exhaust end of the negative pressure fan 115 is provided with the filter unit 116, which is used to filter and purify the gas extracted from the sealed conveying channel 102 before discharging it.

[0038] In this embodiment, the suction end of the negative pressure fan 115 is connected to the tail end of the sealed conveying channel 102, forming a negative pressure suction at the tail end of the sealed conveying channel 102. This, combined with the positive air supply from the front-end clean gas supply device, creates a directional airflow from front to back within the sealed conveying channel 102. This directional airflow continuously carries the dust, moisture, and volatile components released by the medicinal materials during the conveying process to the tail end, where they are extracted by the negative pressure fan 115. This prevents the accumulation of these pollutants inside the channel, which would affect the quality of the medicinal materials. Simultaneously, a filter unit 116 is installed at the exhaust end of the negative pressure fan 115 to filter and purify the extracted gas before discharge. This effectively prevents gases containing medicinal powder or volatile components from being directly discharged into the workshop environment, causing pollution or odor diffusion, and meets environmental emission requirements.

[0039] When using the continuous clean conveying and processing equipment for Chinese herbal raw materials according to this embodiment, the clean gas supply device and the negative pressure generator are first started to form a directional clean airflow from the front end to the rear end in the sealed conveying channel 102; then, each main conveying unit 103 is started, and the Chinese herbal raw materials that have completed the initial processing upstream enter the sealed conveying channel 102 through the feeding port 117, are carried by the main conveying unit 103 and move continuously forward along the conveying direction; when the material reaches the picking and discharging station corresponding to a certain picking and discharging channel 119, if the station corresponds to a process that requires external processing, the operator controls the picking and discharging channel through the control system. The servo motor 108 at position 119 starts, and after being reduced in speed by the gear reducer 109, the servo motor 108 drives the output gear 110 to rotate. The output gear 110 drives the limit shaft to rotate through the transmission gear 122. The limit shaft drives the threaded rod 106 to move upward. The threaded rod 106 pushes the mounting frame 104 and the auxiliary conveying unit 105 to the rising position through the connecting bearing 107, so that the upper surface of the auxiliary conveying unit 105 is higher than the bottom wall of the sealed conveying channel 102, guiding the material to the direction of the pick-and-place channel 119. The operator opens the opening door 120 on the side of the pick-and-place channel 119 to release the material that has arrived at the position. The raw material to be processed is taken out from the material handling channel 119 and transferred to the corresponding external processing step for processing (such as frying, steaming, etc.). After the material handling is completed, the control system controls the servo motor 108 to reverse, and the auxiliary conveying unit 105 descends and resets to the lowering position, and subsequent materials continue to be conveyed forward. After the raw material is processed in the external process, the operator carries the processed material back to the same material handling channel 119, opens the opening and closing door 120, and puts the processed raw material from the material handling channel 119 into the sealed conveying channel 102. The material falls onto the auxiliary conveying unit 105, and the control system controls the servo motor 108 to rotate forward. The auxiliary conveying unit 105 rises again to the rising position, raising the processed material to the same height as the main conveying unit 103. Driven by the main conveying unit 103, the material continues to be conveyed downstream. After completing the corresponding processing steps one by one through the subsequent material handling channel 119, it is finally discharged from the discharge port 118 at the end of the sealed conveying channel 102. Throughout the conveying process, the clean gas supply device continuously supplies clean gas to the front end of the sealed conveying channel 102, and the negative pressure generating device continuously extracts gas from the tail end, so that the channel always maintains a directional clean airflow environment, ensuring the cleanliness and quality stability of the medicinal materials during the conveying process.

[0040] Second embodiment: Based on the first embodiment, please refer to Figure 6 , Figure 6 This is a schematic diagram of the lifting mechanism in the second embodiment.

[0041] The present invention provides a continuous clean conveying and processing equipment for Chinese herbal medicine raw materials, which also includes multiple protective shells 201.

[0042] In this specific embodiment, a protective shell 201 is provided at the bottom of each of the material handling channels 119, and the protective shell 201 is disposed outside the corresponding output gear 110 and transmission gear 122.

[0043] In this embodiment, the protective shell 201 is used to protect the output gear 110 and the transmission gear 122, preventing impurities in the external environment from affecting the meshing of the gear pair.

[0044] Each of the protective shells 201 is provided with an injection tube 202, and a sealing plug 203 is provided at the end of each injection tube 202 away from the protective shell 201.

[0045] In this embodiment, the sealing plug 203 is removed, and gear lubricating oil can be injected into the interior of the protective shell 201 through the injection pipe 202, thereby reducing the wear of the output gear 110 and the transmission gear 122 and improving the service life of the output gear 110 and the transmission gear 122.

[0046] When using the continuous clean conveying and processing equipment for traditional Chinese medicine raw materials according to this embodiment, the protective shell 201 protects the output gear 110 and the transmission gear 122, preventing impurities in the external environment from affecting the meshing of the gear pair. Furthermore, by removing the sealing plug 203, gear lubricating oil can be injected into the interior of the protective shell 201 through the injection pipe 202, thereby reducing the wear of the output gear 110 and the transmission gear 122 and improving their service life.

[0047] The above description discloses only one preferred embodiment of the present invention, and should not be construed as limiting the scope of the present invention. Those skilled in the art will understand that all or part of the processes of the above embodiments can be implemented, and equivalent changes made in accordance with the claims of the present invention are still within the scope of the invention.

Claims

1. A continuous clean conveying and processing equipment for traditional Chinese medicine raw materials, characterized in that, The device includes a frame, a sealed conveying channel, multiple main conveying units, multiple lifting mechanisms, multiple mounting frames, multiple auxiliary conveying units, a clean gas supply device, and a negative pressure generating device. The frame is arranged along the multiple processing steps of the Chinese herbal medicine raw materials. The sealed conveying channel is located at the top of the frame. The front end of the sealed conveying channel is provided with a feeding port, and the end end of the sealed conveying channel is provided with a discharging port. The bottom of the sealed conveying channel is connected to multiple picking and discharging channels. Each picking and discharging channel corresponds to a processing step of a Chinese herbal medicine raw material. Each picking and discharging channel has an opening and closing door on its side. The main conveying unit is provided between the feeding port and the first feeding channel, between two adjacent feeding channels, and between the last feeding station and the unloading port. The lifting mechanism is provided at the bottom of the inner side of each feeding channel, and the mounting frame is provided at the top of each lifting mechanism. The auxiliary conveying unit is provided at each mounting frame. The multiple main conveying units and the multiple auxiliary conveying units are arranged alternately and are all used to carry and convey Chinese herbal medicine raw materials. The clean gas supply device is located at the front end of the sealed conveying channel and is used to introduce clean gas into the sealed conveying channel. The negative pressure generating device is located at the rear end of the sealed conveying channel and is used to generate a directional negative pressure airflow within the sealed conveying channel.

2. The continuous clean conveying and processing equipment for Chinese herbal medicine raw materials as described in claim 1, characterized in that, Each of the lifting mechanisms includes a limiting shaft, a threaded rod, a connecting bearing, and a drive assembly. The limiting shaft is rotatably disposed at the bottom of the material handling channel. The threaded rod is internally threaded onto the limiting shaft. The top end of the threaded rod is connected to the bottom of the mounting frame via the connecting bearing. A limiting rod is disposed at the bottom of the mounting frame. The end of the limiting rod away from the mounting frame passes through the bottom of the material handling channel. The drive assembly is also disposed on the outer side of the bottom of the material handling channel. The output end of the drive assembly is mechanically driven by the limiting shaft.

3. The continuous clean conveying and processing equipment for Chinese herbal medicine raw materials as described in claim 2, characterized in that, Each of the drive components includes a servo motor, a gear reducer, and an output gear. The servo motor is installed on the outer side of the bottom of the material handling channel. The output end of the servo motor is provided with the gear reducer, and the output gear is provided at the output end of the gear reducer. A transmission gear is provided on the outside of the limiting shaft, and the output gear meshes with the transmission gear.

4. The continuous clean conveying and processing equipment for Chinese herbal medicine raw materials as described in claim 3, characterized in that, Each of the limiting shafts includes a shaft body and two limiting rings. The shaft body is rotatably disposed at the bottom of the material handling channel, and two limiting rings are disposed on the outside of the shaft body, with the two limiting rings located on the inner and outer sides of the material handling channel, respectively.

5. The continuous clean conveying and processing equipment for Chinese herbal medicine raw materials as described in claim 4, characterized in that, Each of the limiting rings is provided with an annular groove, and each annular groove is provided with a ball bearing unit, which makes rolling contact with the bottom wall of the material feeding and discharging channel.

6. The continuous clean conveying and processing equipment for Chinese herbal medicine raw materials as described in claim 5, characterized in that, The clean gas supply device includes an air purification unit and a blower. The air purification unit is installed at the air inlet of the blower, and the output end of the blower is connected to the sealed delivery channel through a pipe. The air purification unit is used to filter and purify the air entering the blower.

7. The continuous clean conveying and processing equipment for Chinese herbal medicine raw materials as described in claim 6, characterized in that, The negative pressure generating device includes a negative pressure fan and a filter unit. The suction end of the negative pressure fan is connected to the tail end of the sealed conveying channel through a negative pressure pipe. The exhaust end of the negative pressure fan is equipped with the filter unit, which is used to filter and purify the gas extracted from the sealed conveying channel before discharging it.

8. The continuous clean conveying and processing equipment for Chinese herbal medicine raw materials as described in claim 7, characterized in that, The continuous clean conveying and processing equipment for Chinese herbal raw materials also includes multiple protective shells. Each of the material handling channels is equipped with a protective shell at its bottom, and the protective shells are located outside the corresponding output gear and transmission gear.

9. The continuous clean conveying and processing equipment for Chinese herbal medicine raw materials as described in claim 8, characterized in that, Each of the protective shells is connected to an injection tube, and each injection tube has a sealing plug at the end away from the protective shell.

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