Continuous cleaning and conveying device for radix codonopsis

Abstract

This invention discloses a continuous cleaning and conveying device for Codonopsis pilosula, which relates to the field of Codonopsis pilosula processing technology. It includes a conveying unit, a spray cleaning unit, and a feeding unit. The invention employs a dynamic wave-shaped conveying structure, which continuously switches between peaks and troughs during conveying, allowing the Codonopsis pilosula to autonomously and repeatedly tumble and turn over during transport. This changes the traditional method of conveying materials with a fixed posture on a flat conveyor belt. It effectively avoids the problem of the bottom of the Codonopsis pilosula sticking to the belt for extended periods and not being able to be washed with water, eliminating fixed cleaning blind spots. It can thoroughly clean the mud and sand impurities at the bottom and inside the crevices of the Codonopsis pilosula roots, improving the overall cleanliness of the Codonopsis pilosula. No secondary cleaning is required, effectively improving the overall production efficiency of Codonopsis pilosula processing. Furthermore, through graded and pressure-differentiated stepped spraying operations, the corresponding washing intensity is matched according to the impurity adhesion on different parts of the Codonopsis pilosula, resulting in a gentle and uniform water flow impact, avoiding continuous concentrated high-intensity water pressure directly washing the Codonopsis pilosula body.

Description

Technical Field

[0001] This invention relates to the field of Codonopsis pilosula processing technology, and in particular to a continuous cleaning and conveying device for Codonopsis pilosula. Background Technology

[0002] Codonopsis pilosula, a perennial herb belonging to the genus Codonopsis in the family Campanulaceae, is a commonly used and widely distributed traditional Chinese medicine. The annual national output of Codonopsis pilosula exceeds tens of thousands of tons, primarily produced in Gansu, Shanxi, Shaanxi, and Sichuan provinces. The root of Codonopsis pilosula is used medicinally, possessing the effects of strengthening the spleen and lungs, nourishing blood and promoting body fluid production. It is widely used in the production of traditional Chinese medicine preparations and clinical formulations, enjoying high market demand and economic value.

[0003] After harvesting, Codonopsis pilosula (Dang Shen) accumulates a large amount of soil, sand, and other impurities on its rhizome surface and within the crevices of its roots. Due to the slender and convoluted structure of its rhizome, these impurities easily hide in the folds and gaps between the roots, making cleaning difficult. Currently, the processing and cleaning of Codonopsis pilosula commonly employs a continuous conveyor belt combined with high-pressure water spraying. The conveyor belt moves the Codonopsis pilosula at a uniform speed, and the sprayed water washes away surface impurities. However, the commercially available Codonopsis pilosula cleaning and conveying equipment still has significant technical defects in actual production applications, severely restricting the cleaning quality and yield of finished products. Specific defects are as follows: Firstly, existing cleaning and conveying equipment mostly uses flat, fixed conveyor belts to transport Codonopsis pilosula. During the conveying process, the Codonopsis pilosula lies flat against the surface of the conveyor belt, its overall posture is fixed, and it cannot turn over or tumble on its own. The spray water can only effectively wash the exposed surface of the Codonopsis pilosula facing upwards, while the bottom surface of the Codonopsis pilosula that is in contact with the spray water cannot come into contact with the spray water, forming a fixed cleaning blind spot. As a result, it is difficult to thoroughly remove mud and sand impurities from the bottom of the rhizome and crevices, and the overall cleanliness of the Codonopsis pilosula does not meet the standards. The subsequent re-cleaning workload is large, which significantly reduces the overall efficiency of Codonopsis pilosula processing and production.

[0004] Secondly, existing equipment typically uses continuous high-pressure direct water jets to enhance the cleaning effect. However, the epidermis of Codonopsis pilosula rhizomes is fragile, and the rootlets are delicate. The concentrated and excessively strong impact of continuous high-pressure direct water jets can easily cause damage to the epidermis of Codonopsis pilosula rhizomes, breakage of the main stem, and loss of fine rootlets while washing away impurities. This not only significantly increases the processing loss of Codonopsis pilosula raw materials but also damages the integrity of the Codonopsis pilosula, reducing the grade of the medicinal material and its commercial value. It cannot meet the production requirements of efficient cleaning and finished product protection at the same time.

[0005] To address these issues, a continuous cleaning and conveying device for Codonopsis pilosula was designed. Summary of the Invention

[0006] To address the above issues and overcome the shortcomings of existing technologies, this invention provides a continuous cleaning and conveying device for Codonopsis pilosula. First, the device features a corrugated conveyor belt. As the Codonopsis pilosula is conveyed forward, it rolls from the raised section to the recessed section, autonomously turning and rotating during transport. All surfaces of the herb come into contact with the sprayed water, effectively eliminating blind spots and improving the overall cleanliness of the Codonopsis pilosula. Second, the equipment is equipped with a multi-stage segmented spray structure, sequentially dividing the area into coarse washing, fine washing, and rinsing zones. The coarse washing zone removes large pieces of mud and sand from the surface of the herb, the fine washing zone washes away fine dust from the crevices of the roots and stems, and the rinsing zone completes the final rinsing. This layered operation progressively improves the cleanliness of the herb.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A continuous cleaning and conveying device for Codonopsis pilosula includes a conveying unit, a spray cleaning unit, and a feeding unit. The conveying unit includes two sets of parallel conveying channels. Each conveying channel includes a support frame, a slide rail, a rope winder, and a mesh conveyor belt. One end of the conveyor belt is fixed, and the other end is slidably mounted on the slide rail. The slide rail end is equipped with a rope winder for tensioning the conveyor belt. Several rotating posts are spaced along the length of the bottom of the conveyor belt. Each rotating post includes several positioning posts, several first lifting posts, several second lifting posts, and several limiting posts. The positioning posts are slidably connected to the slide rail and spaced apart to divide the conveyor belt into independent deformation zones. The first lifting posts are located in the middle of one side of the trough, and the second lifting posts are located at the highest point of the crest. The limiting posts are connected to the slide rail through elastic rods and are respectively supported at the lowest point of the trough and the middle of the other side of the crest. By alternating the lifting of the first and second lifting posts, combined with the positioning posts for positioning and the limiting posts for elastic limiting support, the crests and troughs of the conveyor belt are dynamically interchanged, allowing the Codonopsis pilosula to continuously tumble and turn during the conveying process.

[0008] In one embodiment, all of the aforementioned rotating columns adopt a rotatable assembly structure, and the rotating columns can adaptively rotate with the wave deformation of the conveyor belt to match the angle changes caused by the deformation of the conveyor belt.

[0009] In one embodiment, the feeding unit includes a support, a hopper, a feeding belt, and a comb plate. The feeding belt is higher than the conveyor belt of the conveying unit, and the surface of the feeding belt is provided with staggered feeding grooves.

[0010] In one embodiment, the bottom of the hopper has two discharge ports, which correspond to the two feeding areas of the feed belt. The bottom of the hopper is connected to the bracket through an elastic element, and a vibration motor is installed on the hopper.

[0011] In one embodiment, the comb plate is horizontally mounted above the feed belt. The comb plate is used to comb and limit the Codonopsis pilosula stacked on the feed belt, so that the Codonopsis pilosula is transported in a single layer in the feeding groove.

[0012] In one embodiment, the spray cleaning unit is mounted above the conveying unit, and multiple sets of water distribution pipes are sequentially arranged inside the spray cleaning unit along the material conveying direction. The multiple sets of water distribution pipes are set with graded pressure to sequentially realize coarse washing, fine washing and clean water rinsing operations.

[0013] In one embodiment, the bottom of the conveying unit is provided with a water receiving tray, which is used to receive cleaning wastewater. The water receiving tray is connected to a filter water tank, which filters and circulates the wastewater.

[0014] In one embodiment, a double-layer filter screen is installed inside the water filter tank. The inner cavity of the water filter tank is divided into three independent chambers: a sedimentation zone, a filtration zone, and a clear water zone by two vertical partitions. The double-layer filter screen includes an upper coarse filter screen and a lower fine filter screen. The upper coarse filter screen has a pore size of three millimeters, and the lower fine filter screen has a pore size of 0.8 millimeters.

[0015] In one embodiment, a drying unit is provided behind the spray cleaning unit along the conveying direction of Codonopsis pilosula. The drying unit includes a centrifugal fan and an air distribution chamber. The air distribution chamber is mounted above the conveying unit, and the centrifugal fan is connected to the air distribution chamber.

[0016] In one embodiment, a discharge belt is provided below the output end of the two sets of conveying channels. The discharge belt is used to receive the Codonopsis pilosula after it has been cleaned and dried, and to transfer it outward.

[0017] The beneficial effects of this invention are as follows: (1) The present invention adopts a dynamic wave-shaped deformation conveying structure, which can continuously switch the peak and trough shape during the conveying process, so that Codonopsis pilosula can autonomously and repeatedly roll and flip over during the conveying process, which changes the traditional flat conveyor belt material posture fixed and unchanged conveying method; effectively avoids the problem that the bottom of Codonopsis pilosula is stuck to the belt for a long time and cannot be washed with water, eliminates the fixed cleaning blind spot, can thoroughly clean the mud and sand impurities at the bottom of Codonopsis pilosula root and inside the gap, improve the overall cleanliness of Codonopsis pilosula, and eliminate the need for secondary re-cleaning, effectively improving the overall production efficiency of Codonopsis pilosula processing.

[0018] (2) This invention adopts a multi-stage gradient spray cleaning method, abandoning the traditional single high-pressure direct spray cleaning mode. Through graded and pressure-differentiated step spraying operations, the corresponding rinsing intensity is matched according to the impurity adhesion of different parts of Codonopsis pilosula, and the water flow impact is more gentle and uniform, avoiding continuous concentrated high-intensity water pressure directly washing the Codonopsis pilosula body. While ensuring that impurities and stains are fully removed, it effectively prevents damage such as damage to the skin of Codonopsis pilosula root and stem, breakage of main stem and shedding of fine roots, reduces the processing loss of Codonopsis pilosula raw materials, preserves the appearance of Codonopsis pilosula intact, effectively protects the grade of medicinal materials and commercial value, and takes into account the dual production needs of efficient cleaning and finished product protection. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a top view of the conveying unit of the present invention; Figure 3 This is a schematic diagram of one side of the conveying unit of the present invention; Figure 4 This is a structural diagram of the middle part of the conveying unit of the present invention; Figure 5 This is a schematic diagram of one end of the conveying unit of the present invention; Figure 6 This is a schematic diagram of the first and second lifting columns of the present invention; Figure 7 This is a schematic diagram of the rotating belt connection of the present invention; Figure 8 This is a schematic diagram of the feeding unit structure of the present invention; Figure 9 This is a top view of the feeding unit of the present invention; Figure 10 This is a schematic diagram of the spray cleaning unit structure of the present invention.

[0020] In the diagram: 1. Conveying unit; 10-1. First conveying unit; 10-2. Second conveying unit; 10. Discharge belt; 11. First support; 12. Conveyor belt; 13. Rotary column; 14. Slide rail; 15. Water receiving tray; 16. Rope winder; 131. Positioning column; 132. First lifting column; 133. Second lifting column; 134. Limiting column; 1320. First connecting rod; 1321. First cylinder group; 1330. Second connecting rod; 1331. Second cylinder group; 121. 1. Peak; 2. Valley; 3. Pipeline; 4. Feeding unit; 5. Feeding belt; 6. Discharge groove; 7. Second support; 8. Hopper; 9. Elastic component; 10. Discharge port; 11. Comb plate; 12. Spray cleaning unit; 13. Connecting pipe; 14. Water pump; 15. Assembly frame; 16. First water distribution pipe; 17. Second water distribution pipe; 18. Third water distribution pipe; 19. Drying unit; 10. Centrifugal fan; 11. Air distribution chamber; 20. Filter water tank. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of the present invention include, but are not limited to, the following embodiments.

[0022] Please see Figure 1 The present invention discloses a continuous cleaning and conveying device for Codonopsis pilosula, comprising: a conveying unit 1, a feeding unit 2, a spray cleaning unit 3, an air drying unit 4, and a filter water tank 5. Please see Figure 1The feeding unit 2 is mounted above the end of the conveying unit 1. The feeding unit 2 can feed the stored astragalus material onto the conveying surface of the conveying unit 1 to achieve automated continuous feeding. The spray cleaning unit 3 and the air drying unit 4 are sequentially assembled above the middle section of the conveying unit 1 along the astragalus conveying direction. During operation, the conveying unit 1 carries the astragalus forward. The astragalus first enters the working area of ​​the spray cleaning unit 3 and is cleaned by the spray cleaning unit 3. After cleaning, the astragalus continues to be conveyed forward with the conveying unit 1 and enters the working area of ​​the air drying unit 4. The airflow blown by the air drying unit 4 quickly removes the residual moisture attached to the surface of the astragalus. The entire equipment achieves continuous cleaning and drying integrated processing of astragalus through the continuous operation of multiple processes such as feeding, conveying, spray cleaning, and air drying. Please see Figure 2 The conveying unit 1 includes: a first conveying unit 10-1, a second conveying unit 10-2, and a discharge belt 10; the first conveying unit 10-1 and the second conveying unit 10-2 are arranged side by side and have the same structure; the first conveying unit 10-1 and the second conveying unit 10-2 alternately receive Astragalus membranaceus conveyed along the feeding unit 2. Please see Figure 3 As shown, the first conveying unit 10-1 includes a first support 11, a conveyor belt 12, rotating columns 13, slide rails 14, a water receiving tray 15, and a rope winder 16; two slide rails 14 are fixedly installed side by side on the first support 11 in the horizontal direction; the conveyor belt 12 adopts a hollow mesh structure to facilitate the rapid leaching of cleaning wastewater; one end of the conveyor belt 12 is fixedly connected to the first support 11, and the other end of the conveyor belt 12 is slidably assembled on the two slide rails 14 through two sliders, so that the end of the conveyor belt 12 can be adjusted along the slide rails 14; a plurality of rotating columns 13 are evenly spaced along the length direction of the conveyor belt 12, and the rotating columns 13 are integrally... The conveyor belt 12 is supported and fitted to the bottom surface of the conveyor belt 12. Through the top support and limiting action of multiple sets of rotating columns 13, the originally flat conveyor belt 12 is constrained and shaped into a continuous wave structure, resulting in alternating peaks 121 and troughs 122 on the conveyor surface. The peaks 121 and troughs 122 of the conveyor belt 12 in the first conveyor unit 10-1 and the second conveyor unit 10-2 are staggered. Water collection trays 15 are respectively installed below the conveyor belt 12 in the first conveyor unit 10-1 and the second conveyor unit 10-2. The bottom surface of each water collection tray 15 is an inclined slope, and the two water collection trays 15 are respectively connected to a filter water tank 5 via pipes 151. Please see Figure 7 As shown, the rotating column 13 and the conveyor belt 12 adopt a screw-through fixing structure; the rotating column 13 has several fixing screws arranged at equal intervals along its own axis, and each screw penetrates the conveyor belt 12 upwards, and the conveyor belt 12 and the rotating column 13 are fixed together by a multi-point locking method. Please see Figure 4 As shown, the plurality of rotating columns 13 are further divided into positioning columns 131, first lifting columns 132, second lifting columns 133, and limiting columns 134; the two ends of the positioning columns 131 are rotatably equipped with sliders, which are slidably mounted on the slide rail 14; multiple positioning columns 131 are arranged at intervals along the length of the conveyor belt 12 and are fixedly connected to the bottom surface of the conveyor belt 12; the conveyor belt 12 between two adjacent positioning columns 131 has an alternating pattern of crests 121 and troughs 122; The first lifting column 132 and the second lifting column 133 are respectively rotatably connected to the first connecting rod 1320 and the second connecting rod 1330. The lower ends of the first connecting rod 1320 and the second connecting rod 1330 extend downward. Among them, multiple first lifting columns 132 are connected to the bottom surface of the highest point of each wave crest 121, and multiple second lifting columns 133 are connected to the middle bottom surface of each wave trough 122 on the side opposite to the direction of Codonopsis pilosula transport. The two ends of the limiting post 134 are respectively rotatably connected to the spring rod 1341, and the lower end of the spring rod 1341 is slidably engaged with the slide rail 14; multiple limiting posts 134 are arranged between every two positioning posts 131; when the conveyor belt 12 between two adjacent positioning posts 131 is formed into a trough 122, the limiting post 134 is supported on the bottom surface of the lowest point of the trough 122; when the conveyor belt 12 between two adjacent positioning posts 131 is formed into a crest 121, the limiting post 134 is supported on the bottom surface of the middle part of the crest 121 on the same side as the Codonopsis pilosula conveying, at which time the spring rod 1341 is in a stretched state; Combination Figure 6 As shown, the lower ends of each first link 1320 are integrally connected by a rectangular frame, and the lower ends of each second link 1330 are also integrally connected by another rectangular frame; the four corners of the rectangular frame corresponding to the first link 1320 are equipped with the first cylinder group 1321, and the four corners of the rectangular frame corresponding to the second link 1330 are equipped with the second cylinder group 1331; the first cylinder group 1321 and the second cylinder group 1331 can perform alternating up-and-down reciprocating telescopic movements; When the equipment is working, the first cylinder group 1321 retracts and moves downward, pulling the first lifting column 132 down as a whole through the first connecting rod 1320, causing the original crest 121 to sink down. At the same time, the limiting column 134 moves down under the elastic reset action of the spring rod 1341, turning the original crest 121 into a trough 122. Simultaneously, the second cylinder group 1331 extends and moves upward, pushing the second lifting column 133 up as a whole through the second connecting rod 1330, causing the original trough 122 to arch upward. At the same time, the spring rod 1341 is stretched again, turning the original trough 122 into a crest 121. Through the periodic alternating lifting and lowering of the above structure, the crests 121 and troughs 122 of the conveyor belt 12 continuously and dynamically exchange, so that the Codonopsis pilosula in the trough 122 area adapts to the dynamic changes of the slope and rolls downwards. While conveying forward in a stepping manner, it achieves multiple autonomous tumbling and flipping, greatly improving the all-round cleaning effect of the medicinal materials. The positioning post 131, the first lifting post 132, the second lifting post 133, and the limiting post 134 are all rotatably assembled. When the conveyor belt 12 deforms alternately between the crests 121 and the troughs 122, the rotatable rotating post 13 can adaptively rotate with the conveyor belt 12 to match the angle changes generated during the deformation process, and release the torsional stress caused by the deformation of the conveyor belt 12, so as to ensure the smoothness of the process of the conveyor belt 12 switching the wave pattern. The purpose of setting up several positioning columns 131 is that if only the first lifting column 132, the second lifting column 133, and the limiting column 134 are configured, and the positioning columns 131 are removed, during the transition between the crests 121 and the troughs 122, the downward pressing of the first lifting column 132 and the upward supporting of the second lifting column 133 will generate a bidirectional pulling force on the limiting column 134 between them. The limiting column 134 can only stay at the inclined conveying section between the crests 121 and the troughs 122, while the first lifting column 132 is located at the lowest point of the trough 122. Under this condition, when the first lifting column 132 is raised vertically from a low position, the lowest point of the trough 122 moves upward synchronously. The Codonopsis pilosula located at the lowest point of the trough 122 will be subjected to a vertical upward pushing force. This pushing force has no directional guidance and is very likely to push the Codonopsis pilosula backward and reverse, making it impossible to move forward continuously along the conveyor belt 12, thus disrupting the continuous feeding process. This scheme arranges several positioning posts 131 at intervals along the length of the conveyor belt 12 as reference support points. The positions of the positioning posts 131 are fixed, dividing the conveyor belt 12 into multiple independent deformation sections. The first lifting post 132 is only arranged in the middle of the rear side of the trough 122 of a single section. When the first lifting post 132 is raised, the upward support force will guide the Codonopsis pilosula located at the trough 122 to roll down the slope in the direction of conveying, preventing the Codonopsis pilosula from shifting backward or going against the flow, and ensuring that the Codonopsis pilosula is continuously conveyed forward on the dynamic wave deformation conveyor belt 12. Combination Figure 5 As shown, the ends of the two slide rails 14 are respectively equipped with rope winders 16. The steel wire rope inside the rope winder 16 is connected to the slider at the other end of the conveyor belt 12. During the continuous dynamic alternation and deformation of the crests 121 and troughs 122 of the conveyor belt 12, the rope winder 16 relies on the elasticity of the internal spring to keep the steel wire rope continuously taut on the slider, so that the conveyor belt 12 always remains taut and prevents the conveyor belt 12 from loosening and collapsing during the deformation process. A discharge belt 10 is arranged below the output ends of the first conveying unit 10-1 and the second conveying unit 10-2. The Codonopsis pilosula sent from the first conveying unit 10-1 and the second conveying unit 10-2 falls onto the surface of the discharge belt 10 by its own weight. Finally, the discharge belt 10 transfers the Codonopsis pilosula that has been cleaned and processed to the outside, completing the unloading process. Combination Figure 8-9 As shown, the feeding unit 2 includes a feeding belt 20, a second support 21, a hopper 22, and a comb plate 23. The second support 21 supports and installs the feeding belt 20, making the overall height of the feeding belt 20 higher than that of the conveyor belt 12. The feeding belt 20 is divided into two feeding areas, each with several discharge grooves 201, which are arranged in a staggered pattern. Through the staggered arrangement of the discharge grooves 201, the two areas can respectively adapt to the operating state of the conveyor belt 12 in the first conveyor unit 10-1 and the second conveyor unit 10-2, alternately feeding the first conveyor unit. Unit 10-1 and second conveying unit 10-2 supply Codonopsis pilosula; hopper 22 is equipped with a vibrating motor, and hopper 22 is connected to second support 21 by means of elastic element 221. Two discharge ports 222 are opened at the bottom of hopper 22, and the two discharge ports 222 correspond to two feeding areas of feed belt 20 respectively; comb plate 23 is mounted on second support 21 along the width direction of feed belt 20, and comb plate 23 is arranged above feed belt 20. Comb plate 23 can limit the stacked Codonopsis pilosula, flatten Codonopsis pilosula, and ensure that only a single layer of Codonopsis pilosula is stored in the discharge groove 201 and conveyed to conveyor belt 12; Combination Figure 10 As shown, the spray cleaning unit 3 includes an assembly frame 30, a first water distribution pipe 3-1, a second water distribution pipe 3-2, and a third water distribution pipe 3-3. The assembly frame 30 has an inverted U-shaped structure and covers a portion of the conveyor belt 12 in the first conveying unit 10-1 and the second conveying unit 10-2. The first water distribution pipe 3-1, the second water distribution pipe 3-2, and the third water distribution pipe 3-3 are arranged at intervals on the horizontal bottom surface of the assembly frame 30. The first water distribution pipe 3-1, the second water distribution pipe 3-2, and the third water distribution pipe 3-3 are each connected to the filter water tank 5 through a connecting pipe 31. Each connecting pipe 31 is equipped with a water pump 32, and the three water pumps can supply water flow with different pressures to the three water distribution pipes respectively. According to the direction of Codonopsis pilosula's movement on conveyor belt 12, the spraying area is divided into three independent sections: a coarse washing spraying section, a fine washing spraying section, and a clean water rinsing section. The coarse washing spraying section corresponds to the first water distribution pipe 3-1, which is equipped with several fan-shaped low-pressure soft mist nozzles. The nozzles are arranged in two staggered rows along the width of the conveyor belt, with four nozzles in each row, to achieve full-area spraying without dead corners. The nozzles are installed 200 mm above the upper surface of the conveyor belt 12, with a working water pressure of 0.15 MPa, a spray angle of 90 degrees, and a droplet diameter of 200 micrometers. The water flow is gentle and the rinsing is evenly distributed. The fine washing spraying section corresponds to the second water distribution pipe 3-2, which is equipped with six sets of fan-shaped nozzles and a working water pressure of 0.1 MPa. It is specifically designed to deeply clean the fine mud and sand inside the crevices of Codonopsis pilosula's rootlets. The clean water rinsing section corresponds to the third water distribution pipe 3-3, which has four sets of spray nozzles. It uses normal pressure water flow to complete the final rinsing to brighten the appearance of Codonopsis pilosula. The water filtration tank 5 is equipped with a double-layer filter screen. The inner cavity of the water filtration tank 5 is divided into three independent chambers: a sedimentation zone, a filtration zone, and a clear water zone, by two vertical partitions. Wastewater generated during the cleaning operation is first introduced into the sedimentation zone through the water receiving tray 15. Large particles of silt in the wastewater settle and accumulate due to their own weight. A drain outlet is located at the bottom of the sedimentation zone. The water that has completed the initial sedimentation overflows into the filtration zone, where a detachable double-layer filter screen is installed. The double-layer filter screen consists of an upper coarse filter screen and a lower fine filter screen. The upper coarse filter screen has a pore size of three millimeters. The lower fine filter screen has a mesh size of 0.8 mm, which intercepts root and stem debris and fine silt in stages. After being filtered through the double-layer screen, the water flows into the clear water zone. The clear water zone has an overflow pipe on its side wall, and excess water flows back to the sedimentation zone to prevent the water tank from overflowing. A liquid level sensor is installed inside the clear water zone. The liquid level sensor is electrically linked to each water pump 32. When the water level in the clear water zone is too low, the water pump will automatically shut off to avoid dry running and wear. All three connecting pipes 31 are connected to the clear water zone. The water pump 32 draws clean water from the clear water zone and delivers it to each water distribution pipe for spraying operations. Combination Figure 1 As shown, the air-drying unit 4 is arranged behind the spray cleaning unit 3 along the conveying direction of Codonopsis pilosula; the air-drying unit 4 includes a centrifugal fan 40 and an air distribution chamber 41; the air distribution chamber 41 is mounted above the conveyor belts 12 of the first conveying unit 10-1 and the second conveying unit 10-2, and the centrifugal fan 40 is installed on the top of the air distribution chamber 41; after being sprayed and cleaned, Codonopsis pilosula is conveyed into the air-drying unit 4, and the Codonopsis pilosula continues to tumble along with the conveyor belt 12. The airflow generated by the centrifugal fan 40 is evenly conveyed downward through the air distribution chamber 41, completely blowing away the residual moisture attached to the surface of Codonopsis pilosula.

[0023] Working principle of this invention: The equipment consists of a feeding unit 2, a conveying unit 1, a spray cleaning unit 3, an air drying unit 4, and a discharge belt 10 working together to achieve integrated continuous processing of Codonopsis pilosula, including automatic feeding, dynamic flipping conveying, multi-stage spray cleaning, all-round air drying, and automatic discharge. When the equipment is running, the automatic feeding operation is first completed by the feeding unit 2; the hopper 22 relies on the vibration motor to generate vibration to prevent material blockage, and the two discharge ports 222 of the hopper 22 are set to drop material into the two areas of the feeding belt 20; the comb plate 23 mounted on the top of the feeding belt 20 sorts the Codonopsis pilosula and puts it into the discharge groove 201; the surface of the feeding belt 20 is provided with staggered discharge grooves 201 to adapt to the working rhythm of the first conveying unit 10-1 and the second conveying unit 10-2, and alternately feeds Codonopsis pilosula to the first conveying unit 10-1 and the second conveying unit 10-2; Codonopsis pilosula is fed from feeding unit 2 onto conveyor belt 12 of conveying unit 1; under the coordinated operation of positioning column 131, first lifting column 132, second lifting column 133 and limiting column 134, conveyor belt 12 continuously completes the dynamic alternation of crests 121 and troughs 122; Codonopsis pilosula continuously rolls and slides forward along the slope of conveyor belt 12, realizing dynamic flipping and conveying; The Codonopsis pilosula is conveyed forward by the conveyor belt 12 to the working area of ​​the spray cleaning unit 3. The spray cleaning unit 3 is equipped with a first water distribution pipe 3-1, a second water distribution pipe 3-2, and a third water distribution pipe 3-3 in sequence along the conveying direction. Each water distribution pipe outputs cleaning water flow at different pressures, and completes the three processes of coarse washing, fine washing, and clean water rinsing of the Codonopsis pilosula in sequence. The equipment adopts a gradient multi-stage spray structure, and in conjunction with the continuous tumbling state of the Codonopsis pilosula, it sprays and cleans the Codonopsis pilosula in all directions. The wastewater generated during cleaning is returned to the filter tank 5 for filtration treatment, realizing the recycling of water resources. The cleaned Codonopsis pilosula continues to move along the conveyor belt 12 to the air-drying unit 4 area; the air-drying unit 4 generates high-pressure airflow through the centrifugal fan 40, and the airflow is evenly conveyed downward through the air distribution chamber 41. In conjunction with the continuous tumbling conveying state of the Codonopsis pilosula, the residual water stains on the surface of the Codonopsis pilosula and the gaps in the fibrous roots are blown away; the processed Codonopsis pilosula is discharged from the end of the first conveyor unit 10-1 and the second conveyor unit 10-2 and falls onto the discharge belt 10, and is uniformly transferred outward by the discharge belt 10, completing the whole set of fully automatic continuous cleaning and air-drying processing operations of Codonopsis pilosula.

Claims

1. A continuous cleaning and conveying device for Codonopsis pilosula, comprising a conveying unit (1), a spray cleaning unit (3), and a feeding unit (2); characterized in that: The conveying unit (1) includes two sets of parallel conveying channels. Each conveying channel includes a support, a slide rail (14), a rope winder (16), and a mesh conveyor belt (12). One end of the conveyor belt (12) is fixed, and the other end is slidably mounted on the slide rail (14). The slide rail (14) is provided with a rope winder (16) for tensioning the conveyor belt (12) at its end. The bottom of the conveyor belt (12) is provided with a number of rotating posts (13) spaced apart along its length. Each of the rotating posts (13) includes a number of positioning posts (131), a number of first lifting posts (132), a number of second lifting posts (133), and a number of limiting posts (134). The positioning posts (131) are slidably connected to the slide rail (14). The conveyor belt (12) is divided into independent deformation zones by a partition. The first lifting column (132) is located in the middle of one side of the trough (122), and the second lifting column (133) is located at the highest point of the crest (121). Several limiting columns (134) are connected to the slide rail (14) by spring rods. The adjacent limiting columns (134) are respectively supported at the lowest point of the trough (122) and the middle of the other side of the crest (121). By alternating the lifting of the first lifting column (132) and the second lifting column (133), and with the positioning column (131) for positioning and the limiting column (134) for limiting support, the crest (121) and trough (122) of the conveyor belt (12) are dynamically interchanged, so that the Codonopsis pilosula can continuously roll and turn over during the conveying process.

2. The continuous cleaning and conveying device for Codonopsis pilosula according to claim 1, characterized in that: Several of the rotating columns (13) adopt a rotatable assembly structure. The rotating column (13) can rotate adaptively with the wave deformation of the conveyor belt (12) to match the angle change caused by the deformation of the conveyor belt (12).

3. The continuous cleaning and conveying device for Codonopsis pilosula according to claim 1, characterized in that: The feeding unit (2) includes a support, a hopper (22), a feeding belt (20) and a comb plate (23). The feeding belt (20) is higher than the conveyor belt (12) of the conveying unit (1). The surface of the feeding belt (20) is provided with staggered feeding grooves (201).

4. The continuous washing and conveying device for Codonopsis pilosula according to claim 3, characterized in that: The bottom of the hopper (22) has two discharge ports (222), which correspond to the two feeding areas of the feeding belt (20). The bottom of the hopper (22) is connected to the bracket through an elastic element (221), and a vibration motor is installed on the hopper (22).

5. The continuous cleaning and conveying device for Codonopsis pilosula according to claim 3, characterized in that: The comb plate (23) is horizontally mounted above the feed belt (20). The comb plate (23) is used to comb and limit the Codonopsis pilosula stacked on the feed belt (20), so that the Codonopsis pilosula is transported in a single layer in the feeding groove (201).

6. The continuous cleaning and conveying device for Codonopsis pilosula according to claim 1, characterized in that; The spray cleaning unit (3) is covered above the conveying unit (1). Multiple sets of water distribution pipes are arranged in sequence inside the spray cleaning unit (3) along the material conveying direction. The multiple sets of water distribution pipes are set with graded pressure to realize rough washing, fine washing and clean water rinsing in sequence.

7. The continuous cleaning and conveying device for Codonopsis pilosula according to claim 1, characterized in that: The bottom of the conveying unit (1) is provided with a water receiving tray (15), which is used to receive cleaning wastewater. The water receiving tray (15) is connected to a filter water tank (5), which filters and circulates the wastewater.

8. The continuous washing and conveying device for Codonopsis pilosula according to claim 7, characterized in that: The filter tank (5) is equipped with a double-layer filter screen. The inner cavity of the filter tank (5) is divided into three independent cavities: sedimentation zone, filtration zone, and clear water zone by two vertical partitions. The double-layer filter screen includes an upper coarse filter screen and a lower fine filter screen. The upper coarse filter screen has a pore size of three millimeters, and the lower fine filter screen has a pore size of 0.8 millimeters.

9. The continuous cleaning and conveying device for Codonopsis pilosula according to claim 1, characterized in that: A drying unit (4) is arranged behind the spray cleaning unit (3) along the direction of Codonopsis pilosula transport. The drying unit (4) includes a centrifugal fan (40) and an air distribution chamber (41). The air distribution chamber (41) is mounted above the transport unit (1), and the centrifugal fan (40) is connected to the air distribution chamber (41).

10. A continuous washing and conveying device for Codonopsis pilosula according to claim 1, characterized in that: Below the output ends of the two sets of conveying channels, there is a discharge belt (10), which is used to receive the Codonopsis pilosula after cleaning and drying and transfer it outward.

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