Capsule drying device and poplar capsule

Abstract

A capsule drying device comprises a roller and a roller driving device. Heat dissipation holes are densely distributed in the side wall of the roller, one end face of the roller is detachably connected with the roller body, and the other end face of the roller is closed; a plurality of rollers are horizontally connected in an independent box body at the top of the rack; the top of the box body is connected with a door capable of being opened and closed; a plurality of groups of supporting roll shafts are mounted on the bottom surface of the box body, and one group of roll shafts corresponds to one roller; a hot air inlet is formed below the roller; the hot air inlet is connected to the hot air outlet of the hot air drying mechanism; for one group of roll shafts and the corresponding roller, the two roll shafts are parallel to each other, the axis of the roller is parallel to the roll shafts, the roller is freely arranged on the two roll shafts, one roll shaft actively rotates, and the roller and the other roll shaft follow up; the driving shaft is connected with a roller driving device; a hot air inlet is formed in the lower part between the two roll shafts; a detachable dust receiving plate is also connected below the two roll shafts; an opening corresponding to the hot air inlet is formed in the dust receiving plate; and the box body is connected with an exhaust pipeline.

Description

Technical Field

[0001] The technical solution relates to a capsule drying device and its application to poplar capsules, which can be used for pretreatment of poplar seed trait measurement, and belongs to the technical field of agricultural machinery and seed treatment. Background Art

[0002] Capsule drying is an important pretreatment step for seed research and germplasm conservation. Traditional drying methods usually have problems such as low efficiency, high energy consumption, and uneven drying, which not only affect seed processing efficiency but also may lead to a decrease in seed quality.

[0003] Taking the drying of poplar capsules as an example, most of the existing drying equipment adopts a fixed drum design to achieve multi-batch synchronous drying. The hot air is only delivered through a single inlet, which not only restricts the flow of hot air inside the drum, but also leads to low drying efficiency. In this case, the surface of the seeds in the drum is prone to over-drying due to long-term exposure to hot air, while the seeds inside may remain moist due to incomplete drying, resulting in the so-called "half-cooked" phenomenon. In addition, due to the special structure of poplar seeds themselves and a large amount of light flocs attached, the traditional fixed drum drying method has more difficulties in handling such seeds. After the poplar capsules are completely dried, the seeds and flocs must be separated. When the capsules are transferred to the separation equipment, the light flocs are easy to scatter and even form airflow around the equipment, causing the seeds and flocs to fly around, which is more polluting to the environment and increases the complexity of cleaning and sorting, thereby reducing the overall efficiency of seed processing. Summary of the invention

[0004] In order to solve the above problems, this technical solution proposes a capsule drying device that can be applied to poplar capsules. The device has four built-in rollers, which are respectively placed with four varieties of poplar capsules. The four rollers are driven by a servo motor to rotate synchronously and dry at the same time. The industrial hot air blower evenly introduces 60-80℃ hot air, which penetrates the gaps between the capsules to accelerate the evaporation of water, realizes efficient and uniform drying of the capsules, reduces energy consumption and retains the effective ingredients of poplar seeds. Specifically:

[0005] A capsule drying device comprises a frame and a hot air drying mechanism, wherein the hot air drying mechanism is connected to the frame. A roller and a roller driving device are also connected to the frame;

[0006] The drum is a cylinder with heat dissipation holes densely distributed on the side wall. One end face of the drum is detachably connected to the drum body, and this end face is called the drum outer cover. The other end face is closed.

[0007] There are multiple rollers, which are horizontally connected in an independent box on the top of the frame; a door that can be opened and closed is connected to the top of the box; multiple groups of supporting rollers are installed on the bottom of the box, and one group of rollers corresponds to one roller; a hot air inlet is opened under the roller; the hot air inlet is connected to the hot air outlet of the hot air drying mechanism;

[0008] For a set of rollers and corresponding drums: the two rollers are parallel to each other, the axis of the drum is parallel to the rollers, the drum is freely placed on the two rollers, one roller is actively rotated as a driving shaft, and the drum and the other roller follow; the driving shaft is connected and driven by the drum driving device; there is a hot air inlet below between the two rollers;

[0009] A detachable dust collecting plate is also connected below the two rollers; an opening corresponding to the hot air inlet is opened on the dust collecting plate;

[0010] An exhaust duct is connected to the box body (it can be on the upper part of the side wall of the box body to avoid affecting the opening and closing of the door); the outlet of the exhaust duct is connected to the atmosphere and the cold air inlet of the hot air drying mechanism through a three-way valve; during operation, when the temperature in the box does not meet the process requirements, the outlet of the exhaust duct is connected to the cold air inlet of the hot air drying mechanism, so that the hot air can be recycled; soon, when the temperature in the box does not meet the process requirements, the outlet of the exhaust duct is connected to the atmosphere to discharge high-humidity gas.

[0011] Each group of rollers is parallel to each other, and each roller is arranged in a matrix shape in the box; in each group of rollers: for the driving rollers with the same rotation axis, their rotating shafts are connected by a coupling, and the first driving rollers are connected to the roller driving device; for two adjacent groups of rollers with parallel rotation axes, their driving rollers are close to each other and are connected to the roller driving device through the same synchronous rotation mechanism.

[0012] For any roller, there is a corresponding limiting mechanism in the box; the limiting mechanism includes a positioning shaft and a drum cover positioning plate; the positioning shaft is connected to the box through a positioning bracket, and the axis height of the positioning shaft is the same as the height of the rotating axis of the roller; a barrel-shaped recess is opened in the middle position of the closed end surface of the roller; the drum cover positioning plate is connected to the box and is located between the bearing seats of the two roller shafts; when the roller is placed on the roller shaft, the positioning shaft is in the barrel-shaped recess, the drum cover positioning plate is on one side of the roller outer cover, and the top of the drum cover positioning plate is higher than the lowest end of the roller.

[0013] The hot air drying mechanism is connected to the frame and is below the box body; the hot air drying mechanism includes: a hot air blower, a hot air main pipe and a plurality of hot air branch pipes; the air inlet of the hot air main pipe is connected to the hot air outlet of the hot air blower; the air inlet of the hot air branch pipe is connected to the hot air outlet of the hot air main pipe, and the air outlet of the hot air branch pipe is connected to the hot air inlet below the drum.

[0014] The hot air main pipe is an L-shaped hot air delivery pipe, and its axial cross-section is L-shaped; the vertical end face of the L-shaped hot air delivery pipe is its air inlet, and the horizontal end face of the L-shaped hot air delivery pipe is closed. Hot air outlets are respectively opened on both sides of the vertical section of the L-shaped hot air delivery pipe, and the heights of the hot air outlets are the same and the distances between them are the same; the number of air outlets of each hot air branch pipe is the same; the hot air inlet under each drum is located in the middle of the drum.

[0015] The roller driving device includes a servo motor and a transmission mechanism; the servo motor is installed on the frame and below the box; the transmission mechanism is located outside a side surface of the box, and the rotation axis of the roller is perpendicular to the side surface of the box; the transmission mechanism includes a belt transmission mechanism and a gear mechanism; the servo motor is connected to and drives the main driving gear through the belt transmission mechanism, and the main driving gear is connected to and drives the driving shaft in each group of roller shafts through the gear mechanism.

[0016] The hot air inlet below the drum is removably covered with a dustproof cloth.

[0017] The dust collecting plate is made of a coated plate with polytetrafluoroethylene on the surface; there are multiple dust collecting plates; among the rollers arranged in a matrix, there is a corresponding dust collecting plate under the same row of rollers parallel to each other, and the dust collecting plate is inserted into the box body in a pull-out manner, and the pulling direction is perpendicular to the rolling axis of rotation.

[0018] The capsule drying device is used for poplar capsules, then: the drum diameter is 197mm, the length is 394mm, and the heat dissipation hole diameter is 1mm.

[0019] The main steps of using this device include: 1) equipment inspection and loading and fixing; 2) starting the motor to adjust the speed, and the hot air blower to evenly supply air; 3) recording parameters and monitoring the dryness; 4) after reaching the standard, the motor will stop first, and the hot air blower will be turned off later; 5) after cooling, the drum will be replaced for cyclic operation, and finally cleaning and maintenance. The core principle is that hot air convection and mechanical transmission work together to achieve uniform dehydration. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the external structure of the drying device of the present invention;

[0021] Figure 2 is a schematic diagram of the appearance structure of the drying device from another viewing angle;

[0022] Figure 3 It is a schematic diagram of the structure of the roller and the drum;

[0023] Figure 4 It is a schematic diagram of the structure of the roller and drum in the box;

[0024] Figure 5 It is a structural schematic diagram of the hot air conveying pipeline;

[0025] Figure 6 It is a structural diagram of the roller fixing / limiting;

[0026] Figure 7 It is a structural diagram of the hinge;

[0027] Figure 8 It is a schematic diagram of the structure inside the box (without rollers and drums installed);

[0028] Fig. 9 It is a structural diagram of the motor drive part.

[0029] In the figure:

[0030] Support frame 1, upper opening aluminum alloy left and right doors 2 and 4, door handle 3, ordinary hinge 5, box 6, servo motor 7, motor rack 8, industrial hot air blower 9;

[0031] Axle 501 (of hinge), upper metal blade 502, lower metal blade 503;

[0032] Output shaft 701, driving pulley 702, driven shaft 703, belt 704, driven pulley 705, main driving gear 706, first gear 707, first driven gear 708, first driving roller 709, first auxiliary roller 710, first secondary driving roller 711, first secondary auxiliary roller 712, second secondary roller 713, first main roller 714, coupling 715, polytetrafluoroethylene coated plate 716, polytetrafluoroethylene coated plate pulling handle 717, dustproof cloth 718, positioning bracket 719, polytetrafluoroethylene coated plate fixing block 720, roller outer cover 721, pulling handle 722, heat dissipation hole 723, drum cover positioning plate 724, positioning shaft 725,

[0033] Bearing seat 7031;

[0034] Trunnion hanging plate 801;

[0035] L-shaped hot air delivery pipeline 901, pipeline clamp 902, air outlet 903 of three-way diverter pipe, three-way diverter pipe 904, plug-in joint 905. DETAILED DESCRIPTION

[0036] 1. Overview

[0037] A capsule drying device, the structure of which is:

[0038] The industrial hot air blower is fixed on the motor rack, and its air outlet is connected to the horizontal inlet end of the L-shaped hot air delivery pipe through a flange. The two sides of the vertical outlet end of the L-shaped hot air delivery pipe are symmetrically connected to two three-way shunt pipes through pipe clamps; the servo motor drives the main gear to drive the double-sided gear sets to engage synchronously, and each side is linked to two sets of driving rollers through the first gear and the first driven gear respectively; the bottom of the drum is fixed to the center of the positioning bracket through the positioning shaft, and the outer cover of the drum is locked with the box body through the drum cover positioning plate; the top-opening aluminum alloy door is installed on the top of the box body through four hinges, the hinge axis serves as the rotation center, and lifting handles are provided on both sides of the door body.

[0039] The horizontal inlet end of the L-shaped hot air delivery duct is connected to the air outlet flange of the industrial hot air blower, and the vertical outlet end is symmetrically split to two three-way splitter pipes. The four air outlets of the three-way splitter pipe are sealed and connected to the lower end of the box through plug-in joints, and the end of the air outlet is covered with a dustproof cloth, which can be removably installed through a stainless steel fixing ring.

[0040] The output shaft of the servo motor is connected to the drive shaft through a coupling. A driving pulley is installed at the end of the drive shaft. The driving pulley is connected to the driven pulley vertically above through a belt. The driven pulley fixes the main drive gear coaxially through the driven shaft. The main drive gear is meshed with a bilaterally symmetrical gear transmission device. Bilaterally symmetrical gear transmission device: the first gear is meshed with the main drive gear and connected to the first drive roller through a coupling. The first driven gear is meshed with the first gear and connected to the first auxiliary roller through a coupling. The first drive roller and the first auxiliary roller are arranged in parallel, and the right end is connected to the first auxiliary drive roller and the first auxiliary roller through a coupling. The four groups of rollers jointly support the first main roller and the first auxiliary roller to rotate synchronously.

[0041] For poplar capsules, the drum has a diameter of 197mm and a height of 394mm, with evenly distributed heat dissipation holes of 1mm in diameter on the surface. The bottom of the drum is fixed to the center of the positioning bracket through a positioning shaft, and the outer cover of the drum is locked with the box body through a drum cover positioning plate. Drum: The first main drum and the second main drum are arranged parallel and symmetrically, and the double-sided gear transmission device realizes the coordinated operation of the four drums through eight transmission rollers.

[0042] The aluminum alloy door is installed on the top of the box through four hinges. The axis of the hinge serves as the rotation center, and there are pull handles on both sides of the door.

[0043] PTFE coated plate: The PTFE coated plate is located under the roller. The coated plate is fixed to the four corners of the bottom of the box through four fixing blocks. The right fixing block is aligned with the dustproof cloth outlet. A pull-out handle is welded on one side of the coated plate, which can be pulled horizontally along the bottom of the roller to remove it. Dustproof cloth: The dustproof cloth is made of high-temperature resistant glass fiber material, which can withstand the impact of continuous airflow at 80°C, and the surface is coated with a hydrophobic coating to reduce dust adhesion.

[0044] 2. Combined with the following Figures 1 to 9 The present invention is further illustrated by taking the application of the present invention in drying poplar capsules as an example.

[0045] A poplar capsule drying device, the structure of which is:

[0046] refer to Figure 1 , Figure 2 and Figure 5 The hot air drying mechanism of this example mainly includes: an industrial hot air blower 9, a motor rack 8, an L-shaped hot air delivery pipeline 901, two three-way shunt pipes 904 of the same size, a pipeline clamp 902, four dustproof cloths 718, and four plug-in connectors 905;

[0047] The industrial hot air blower 9 is fixedly mounted on the motor rack 8. The air outlet of the industrial hot air blower is connected to the horizontal inlet end of the L-shaped hot air delivery pipe through a flange, and the two sides of the vertical outlet of the hot air delivery pipe are connected to the air inlets of two three-way shunt pipes of the same size through pipe clamps; the air outlet 903 of the three-way shunt pipe is used to supply air to the box body 6.

[0048] In actual use, the hot air temperature provided by the industrial hot air blower is 60-80℃; the two three-way shunt pipes are of the same size and symmetrically distributed (for further reference Figure 5 ) The air outlet 903 (two in total) of a single three-way manifold extends vertically upward and is fixed to the lower end of the box 6 through two plug-in connectors 905 to evenly distribute the hot air to the drying area. (Refer to Figure 8 ) Four dustproof cloths 718 cover the air outlets of the three-way diverter pipe respectively, and the dustproof cloths are installed at the ends of the air outlets through detachable fixing rings.

[0049] refer to Figure 2 The servo motor 7 and the industrial hot air blower 9 are placed on the motor rack 8. There are two ear shaft hanging plates 801 on the left and right sides of the motor rack, which are fixed on the support frame 1 of the dryer.

[0050] The drum driving device mainly includes: a servo motor 7, a motor rack 8, an output shaft 701, a driving pulley 702, a driven pulley 705, a driven shaft 703, three bearing seats 7031, a main driving gear 706, a bilaterally symmetrical gear transmission device, and a gear protection shell;

[0051] Further references Figure 3 and Fig. 9The servo motor 7 is fixed on the motor rack 8 and is located on the left side of the industrial hot air blower 9. Its output shaft is connected to the drive shaft through a coupling. The other end of the drive shaft is fixed with a driving pulley 702, which is connected to a driven pulley 705 through a belt. The driven pulley is located directly above the driving pulley, and the two form a vertical motion through the belt. The driven pulley and the main driving gear 706 are coaxially fixed through the driven shaft. The driven shaft is supported by three bearing seats 7031. The three bearing seats are respectively located at the two ends and the middle position of the bottom of the box body 6. The main driving gear is located on the right side of the driven pulley. The main driving gear is meshed with the bilateral symmetrical gear transmission device to transmit power to the bilateral gear transmission device; the driving device is located on the inner side of the left and right gear protection shells.

[0052] refer to Figure 3 and Fig. 9 , in this case there are 4 rollers.

[0053] The first gear 707 is located on one side of the main driving gear 706, and is meshed with the main driving gear and the first driven gear 708 respectively; the first driven gear 708 is located on the right side of the first gear 707, the right side of the first gear 707 is connected to the left end of the first driving roller shaft 709 through a coupling, the right side of the first driven gear 708 is connected to the left end of the first auxiliary roller shaft 710 through a coupling, the first main roller 714 is located above the first driving roller shaft 709 and the first auxiliary roller shaft 710, and the first driving roller shaft 709 and the first auxiliary roller shaft 710 are arranged in parallel.

[0054] The right end of the first driving roller 709 is connected to the first auxiliary driving roller 711 through a coupling, the right end of the first auxiliary roller 710 is connected to the first auxiliary auxiliary roller 711 through a coupling, the second auxiliary roller 713 is located above the first auxiliary driving roller 711 and the first auxiliary auxiliary roller 712, the first auxiliary driving roller 711 and the first auxiliary auxiliary roller are arranged in parallel, and the right sides of the first auxiliary driving roller 711 and the first auxiliary auxiliary roller 712 are fixed to the right side of the bottom of the box through two couplings respectively.

[0055] In the double-sided gear transmission device: the two gear transmission devices are axially symmetrical about the main driving gear, and the front surfaces of the first main roller 714 and the second main roller 713 are parallel to each other.

[0056] Two polytetrafluoroethylene coated plates 716 of the same size are placed under the first main roller 714 and the second main roller, and under the first auxiliary roller and the second auxiliary roller 713;

[0057] The fixing device for any one of the polytetrafluoroethylene coated plates comprises: four identical polytetrafluoroethylene coated fixing blocks 720, and a polytetrafluoroethylene coated plate pulling handle 717;

[0058] The polytetrafluoroethylene coated plate 716 is located directly below the first driving roller and the first auxiliary roller and is in direct contact with them. The four fixed blocks are evenly distributed at the four corners below the polytetrafluoroethylene coated plate and are located above the bottom of the box. The two fixed blocks on the right are placed on both sides of the dustproof cloth and are in a straight line with the dustproof cloth. The pull-out handle of the polytetrafluoroethylene coated plate is located on one side of the polytetrafluoroethylene coated plate and is fixed to the edge of the polytetrafluoroethylene coated plate by welding.

[0059] In actual use of the device, the size of the drum is a cylindrical drum with a bottom diameter of 197 mm and a height of 394 mm. The drum can accommodate 1 kg of poplar capsules. The four drums in this example have the same size and can accommodate different types of poplar capsules for coordinated drying.

[0060] refer to Figure 6 and Figure 8 , heat dissipation holes 723 with a diameter of 1 mm are evenly distributed around the cylindrical drum, the positioning bracket 719 is fixed to the bottom of the box body 6, located on the left side of the bottom of the drum, and its positioning shaft 725 is installed on the positioning bracket through a bearing, located at the center of the bottom of the drum, the drum cover 721 covers the right side of the drum, and the symmetrical lifting handles 722 are fixed to the right side of the drum cover by welding, and the drum cover positioning plate 724 is fixed to the bottom of the box body, and one side of the drum cover positioning plate can be tightly matched with the drum cover;

[0061] refer to Figure 1 and Figure 7 , the left and right doors of the upper opening aluminum alloy (marked 2 is the right door and marked 4 is the left door in the figure) are installed on the top of the box body 6, wherein a right handle is fixed above the upper opening aluminum alloy right door, and the upper opening right handle is located in the center of the left side of the right door, and two ordinary hinges 5 are fixed on both sides of the right end of the upper opening aluminum alloy right door, which are connected to the box body through ordinary hinges to connect the aluminum alloy door and the box body, a metal blade at one end of the ordinary hinge is fixed to the side of the upper opening aluminum alloy door, and a metal blade at the other end is fixed to the top of the box body, and a shaft is installed in the center of the ordinary hinge as the rotation center of the upper opening aluminum alloy door.

[0062] Next, the specific operation of the device is described as follows based on the specific application of poplar capsules in the actual drying process;

[0063] Initial state:

[0064] Structural inspection: Ensure that the servo motor, hot air blower, transmission gear set and roller fixing device are in a rigid connection state, check the belt tension to ensure there is no slippage, start the industrial hot air blower to ensure there is no air leakage, check whether the rigidity conditions of the roller are met, and ensure that it can remain stable during operation;

[0065] Action 1:

[0066] Put four different varieties of poplar capsules with a mass of 1kg±10g into four drums respectively, and make sure that the capsules are evenly distributed in the drums, and cover the drums. Open the upper opening aluminum alloy door, and fix the bottom of the drum with capsules on the positioning shaft by pulling the handle, and limit one end on the drum cover fixing plate to ensure that the drum is firmly installed to avoid loosening or displacement during operation. Close the upper opening aluminum alloy door.

[0067] Action 2:

[0068] Start the servo motor, which provides power source, and adjust its speed to ensure that the driven pulley and the main drive gear can rotate synchronously, so that a single roller can run simultaneously under the action of two transmission rollers, ensuring that the speeds of the four rollers are uniform;

[0069] Action 3:

[0070] Start the industrial hot air blower, which outputs 60-80℃ hot air, which is evenly distributed to the bottom of the four drums through the L-shaped pipe and two three-way diverter pipes to ensure that the hot air can evenly penetrate the capsule layer, forming turbulence to act on the poplar capsules in the drum and accelerate the drying process;

[0071] Action 4:

[0072] Record the servo motor speed, hot air blower temperature and air volume and other parameters. Regularly check the drying of the capsules in the drum and record the drying time;

[0073] Action 5:

[0074] When the capsules in the drum reach the required dryness, after the servo motor is turned off, the hot air blower is turned off for 60 seconds to use the residual heat to purge the moisture in the pipeline. After the drum is naturally cooled to below 35°C, the upward-opening aluminum alloy door is opened and the drum is removed. Check the dried capsules to ensure that they are evenly dried and there is no wet or over-dried part;

[0075] Continue to put a drum full of capsules into the device and carry out the above steps;

[0076] Action six:

[0077] After all capsules are completely dried, remove the polytetrafluoroethylene coated plate through the polytetrafluoroethylene coated plate lifting handle, remove the dust on the surface of the polytetrafluoroethylene coated plate, and replace the dustproof cloth under the roller; check the status of each component of the equipment, and clean and maintain it if necessary for the next use.

[0078] When drying different varieties of poplar capsules, it is only necessary to replace the roller in the device and proceed according to the above steps.

[0079] Beneficial effects and principles

[0080] 1) When hot air is transported, this device uses an L-shaped hot air transport pipe to connect two hot air diversion pipes, and combines pipe clamps and plug-in joints to achieve sealed diversion. The hot air evenly covers the bottom of the drum through four vertical air outlets, forming a penetrating turbulence from bottom to top, ensuring that the capsule layer in the four drums is heated evenly, avoiding uneven drying problems caused by local excessive temperature or insufficient air volume.

[0081] 2) The power system of this device adopts a bilaterally symmetrical gear transmission group + eight roller linkage design. The servo motor drives the main gear to drive the bilateral gear groups to engage synchronously. Each side is linked to two sets of drive rollers (a total of four drive / auxiliary rollers) through the first gear and the first driven gear. With the rigid support of three bearing seats, the speed error of the eight drive rollers is achieved. The dynamic balance is stable when the four rollers (main and auxiliary rollers are opposite) rotate synchronously, eliminating the capsule distribution offset caused by mechanical vibration and ensuring the consistency of drying.

[0082] 3) This device is equipped with four rollers, which can effectively dry different varieties of poplar capsules. When a single variety is completely dried, the capsules can be removed in time, solving the problem of over-drying. Each roller (with a 1mm diameter heat dissipation hole) can independently load capsules of different varieties (1kg±10g), and quickly lock them with the positioning shaft and the cylinder cover fixing plate; during the drying process, the capsules can be removed as soon as they are dried, avoiding over-drying or adhesion damage caused by different drying rates of multiple varieties in the same batch.

[0083] 4) The drum cover of this device is integrated with a lifting handle, combined with an upward-opening aluminum alloy door, which can complete the single-drum disassembly within 5 seconds after cooling to 35°C, and directly inoculate the inlet of the flocculation separator, reducing the risks of capsule scattering, mechanical damage and secondary moisture absorption during traditional transportation, and meeting the pretreatment requirements for high-precision trait detection of multiple varieties of seeds.

Claims

1. A capsule drying device, comprising a frame and a hot air drying mechanism, wherein the hot air drying mechanism is connected to the frame, and is characterized in that The frame is also connected to a roller and a roller driving device; The drum is a cylinder with heat dissipation holes densely distributed on the side wall. One end face of the drum is detachably connected to the drum body, and this end face is called the drum outer cover. The other end face is closed. There are multiple rollers, which are horizontally connected in an independent box on the top of the frame; a door that can be opened and closed is connected to the top of the box; multiple groups of supporting rollers are installed on the bottom of the box, and one group of rollers corresponds to one roller; a hot air inlet is opened under the roller; the hot air inlet is connected to the hot air outlet of the hot air drying mechanism; For a set of rollers and corresponding drums: the two rollers are parallel to each other, the axis of the drum is parallel to the rollers, the drum is freely placed on the two rollers, one roller is actively rotated as a driving shaft, and the drum and the other roller follow; the driving shaft is connected and driven by the drum driving device; there is a hot air inlet below between the two rollers; A detachable dust collecting plate is also connected below the two rollers; the dust collecting plate is provided with an opening corresponding to the hot air inlet; An exhaust pipe is connected to the box body; the outlet of the exhaust pipe is respectively connected to the atmosphere and the cold air inlet of the hot air drying mechanism through a three-way valve.

2. The capsule drying device according to claim 1, characterized in that Each set of rollers are parallel to each other, and the rollers are arranged in a matrix shape inside the box; In each group of roller shafts: for the driving roller shafts with the same rotation axis, their rotation shafts are connected by a coupling, and the first driving roller shafts are connected to the drum driving device; For two adjacent groups of roller shafts with parallel rotation axes, their driving roller shafts are close to each other and are connected to the roller driving device through the same synchronous rotation mechanism.

3. The capsule drying device according to claim 1 is characterized in that for any roller, there is a corresponding limiting mechanism in the box; the limiting mechanism includes a positioning shaft and a drum cover positioning plate; the positioning shaft is connected to the box through a positioning bracket, and the axis height of the positioning shaft is the same as the height of the rotation axis of the roller; a barrel-shaped recess is opened in the middle position of the closed end surface of the roller; the drum cover positioning plate is connected to the box and is located between the bearing seats of the two roller shafts; when the roller is placed on the roller shaft, the positioning shaft is in the barrel-shaped recess, the drum cover positioning plate is on one side of the drum outer cover, and the top of the drum cover positioning plate is higher than the lowest end of the roller.

4. The capsule drying device according to claim 1, characterized in that The hot air drying mechanism is connected to the frame and is below the box body; the hot air drying mechanism includes: a hot air blower, a hot air main pipe and a plurality of hot air branch pipes; the air inlet of the hot air main pipe is connected to the hot air outlet of the hot air blower; the air inlet of the hot air branch pipe is connected to the hot air outlet of the hot air main pipe, and the air outlet of the hot air branch pipe is connected to the hot air inlet below the drum.

5. The capsule drying device according to claim 1, characterized in that The hot air main pipe is an L-shaped hot air delivery pipe, and its axial section is L-shaped; the vertical end face of the L-shaped hot air delivery pipe is its air inlet, and the horizontal end face of the L-shaped hot air delivery pipe is closed. Hot air outlets are respectively opened on the two sides of the vertical section of the L-shaped hot air delivery pipe, and the heights of the hot air outlets are the same and the distances between them are the same; The number of air outlets of each hot air branch pipe is the same; the hot air inlet below each drum is located in the middle of the drum.

6. The capsule drying device according to claim 1, characterized in that The roller driving device includes a servo motor and a transmission mechanism; the servo motor is installed on the frame and below the box; the transmission mechanism is located outside a side surface of the box, and the rotation axis of the roller is perpendicular to the side surface of the box; The transmission mechanism includes a belt transmission mechanism and a gear mechanism; the servo motor is connected to and drives the main driving gear through the belt transmission mechanism, and the main driving gear is connected to and drives the driving shafts in each group of roller shafts through the gear mechanism.

7. The capsule drying device according to claim 1, characterized in that The hot air inlet below the drum is removably covered with a dustproof cloth.

8. The capsule drying device according to claim 2, characterized in that the dust collecting plate is made of a coating plate coated with polytetrafluoroethylene; There are multiple dust collecting plates; among the rollers arranged in a matrix, there is a corresponding dust collecting plate under the rollers in the same row parallel to each other. The dust collecting plate is inserted into the box body in a pull-out manner, and the pulling direction is perpendicular to the rotating axis of the rolling.

9. The capsule drying device according to claim 1, characterized in that The capsule drying device is used for poplar capsules, then: the drum diameter is 197mm, the length is 394mm, and the heat dissipation hole diameter is 1mm.

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