A dryer for the production of fungicides

Abstract

The present invention discloses a dryer for fungicide production, which relates to the technical field of fungicide processing. The dryer comprises a first drying bin and a second drying bin, wherein a first storage bin is arranged on the feeding side of the first drying bin, a first feeding pipe is arranged on the outer shell of the first storage bin, the first feeding pipe is used for continuously feeding the first storage bin, and a first medium is stored in the first storage bin, a second storage bin is arranged on the feeding side of the second drying bin, a second feeding pipe is arranged on the outer shell of the second storage bin, the second feeding pipe is used for continuously feeding the second storage bin, and a second medium is stored in the second storage bin, the first drying bin and the second drying bin are both connected to a heat source, the first medium and the second medium are mixed to form a complete fungicide, the first medium is a heat-sensitive material in the fungicide, and the second medium is a non-heat-sensitive material in the fungicide, the two media are dried separately, and different drying processes are used to speed up the drying speed while reducing the drying energy consumption.

Description

Technical Field

[0001] The invention relates to the technical field of fungicide processing, in particular to a dryer for fungicide production. Background Art

[0002] During the fungicide production process, the drying process directly affects the product's active ingredient retention, particle uniformity, and storage stability. Currently, the industry generally uses hot air circulation drying, spray drying, or vacuum drying equipment, but these have significant drawbacks: Traditional hot air drying has low temperature gradient control precision (above ±5°C), which can easily lead to the decomposition of active ingredients in heat-sensitive fungicides (such as quaternary ammonium salts); while spray drying enables continuous production, the atomization process can easily lead to uneven particle size distribution (D90>50μm) and poor adaptability to high-viscosity suspensions; existing vacuum drying equipment has high energy consumption (unit energy consumption ≥1.2kW·h / kg) and a drying cycle of up to 8-12 hours. Therefore, there is an urgent need to develop a drying device that combines high energy efficiency, precise temperature control, and intelligent regulation. Summary of the Invention

[0003] The object of the present invention is to provide a dryer for producing fungicides to solve the problems raised in the above background technology.

[0004] To solve the above technical problems, the present invention provides the following technical solutions: A dryer for producing fungicides, comprising a first drying chamber and a second drying chamber, wherein a first storage chamber is provided on the feeding side of the first drying chamber, and a first feeding pipe is provided on the outer shell of the first storage chamber, the first feeding pipe being used to continuously feed the first storage chamber, and a first medium is stored in the first storage chamber;

[0005] A second storage bin is provided on the feeding side of the second drying bin, and a second feeding pipe is provided on the outer shell of the second storage bin. The second feeding pipe is used to continuously feed the second storage bin, and the second medium is stored in the second storage bin.

[0006] The first drying chamber and the second drying chamber are both connected to a heat source.

[0007] According to the above technical solution, a hydraulic lifting assembly is provided on one side of the first drying bin and the second drying bin, and the hydraulic lifting assembly includes a support frame standing on the ground, a hydraulic press is installed in the inner frame of the support frame, the output end of the hydraulic press faces upward and a first connecting rod is fixedly installed, the first connecting rod extends toward the drying bin and a support plate is fixedly installed, a number of empty pipes are evenly and equidistantly installed at the bottom of the support plate, a feed bin is fixedly installed on the bottom of the several empty pipes, and a first conduit is provided between the feed bin and the storage bin.

[0008] According to the above technical solution, a first track is set in the empty tube, and a second connecting rod is slidably connected to the first track. A material guide pipe is fixedly installed at the bottom of the second connecting rod. The material guide pipe is a hollow structure with no closure at the bottom. A number of guide holes are set on the side wall of the material guide pipe. Material guide troughs are set on the tops of the first drying bin and the second drying bin. The specifications of the material guide troughs match the specifications of the feed bin. A number of feed holes are set in the material guide trough, and a number of micro valves are set at the bottom of the feed bin. The micro valves are vertically aligned with the axis of the material guide pipe.

[0009] According to the above technical solution, a preheating device is provided in the feed bin, the preheating device is installed on the inner wall of the feed bin, and the preheating device is connected to the hydraulic lifting assembly.

[0010] According to the above technical solution, a heat recovery device is provided at the exhaust port of the first drying bin and the second drying bin. The heat recovery device is divided into two groups. The first group of heat recovery devices is provided in the internal upper area of the material guide pipe, and includes a third connecting rod fixedly installed in the material guide pipe, a second motor is installed at the end of the third connecting rod, and a first fan assembly is fixedly installed at the output end of the second motor.

[0011] According to the above technical solution, the second heat energy recovery device is a heat exchange chamber arranged on one side of the drying chamber. A first heat conduction pipe extends from the top of the heat exchange chamber and is connected to the drying chamber. A fourth connecting rod is fixedly installed in the first heat conduction pipe. A third motor is fixedly installed at the end of the fourth connecting rod. A second fan assembly is fixedly installed at the output end of the third motor. A second heat conduction pipe extends from the bottom of the heat exchange chamber and is connected to the drying chamber.

[0012] A fifth connecting rod is fixedly installed in the second heat conducting pipe, a fourth motor is fixedly installed at the end of the fifth connecting rod, and a third fan assembly is fixedly installed at the output end of the fourth motor;

[0013] A high temperature resistant filter is provided at the connection between the second heat conducting pipe and the heat exchange chamber.

[0014] According to the above technical solution, temperature sensors are installed in the first drying chamber and the second drying chamber, and several groups of temperature sensors are arranged in sequence from top to bottom.

[0015] According to the above technical solution, a discharge bin is set on one side of the heat exchange bin, and the bottom of the discharge bin is connected to the bottom of the drying bin by setting a third feed pipe. A second pump is set at the connection between the third feed pipe and the drying bin, and a directional fourth fan assembly is set at the fourth feed pipe.

[0016] According to the above technical solution, a number of vertical poles are fixedly installed at the bottom of the discharge bin, a number of short poles are set on the side wall of each vertical pole, and a fifth motor is set at the bottom of the vertical pole.

[0017] According to the above technical solution, the discharge bins matched with the first drying bin and the second drying bin are connected to the mixing bin together, and a stirring device is installed in the mixing bin.

[0018] Compared with the prior art, the present invention has the following beneficial effects: in the present invention, by providing a first drying chamber and a second drying chamber, a first medium and a second medium are mixed to form a complete fungicide, the first medium is a heat-sensitive material in the fungicide, and the second medium is a non-heat-sensitive material in the fungicide, the two media are dried separately, and different drying processes are used, thereby accelerating the drying speed while reducing the drying energy consumption;

[0019] By setting up guide tubes and micro valves, the number of opened micro valves and the number of guide tubes driven into place are controlled to achieve control of the medium delivery volume. The setting of the guide tubes provides a buffer process for the delivery of the medium, and increases the links for the medium to enter the guide tube through the guide holes and then enter the drying chamber, so that the medium has more links to extend the time to enter the drying chamber. During this time, a preheating process can be provided for the medium. The setting of the guide holes prevents the medium from stacking together when entering the drying chamber, and loosens the medium physically to avoid the medium from sticking in the drying chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is a schematic diagram of the overall front structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the back structure of the storage bin of the present invention;

[0023] Figure 3 It is a schematic diagram of the guide trough of the present invention;

[0024] Figure 4 It is a schematic top view of the overall structure of the present invention;

[0025] Figure 5 The present invention Figure 4 Schematic diagram of the enlarged structure of area A in the middle;

[0026] Figure 6 It is a schematic diagram of the internal structure of the air tube of the present invention;

[0027] Figure 7 It is a schematic diagram of the material guide tube of the present invention;

[0028] Figure 8 is a schematic diagram of a first heat pipe of the present invention;

[0029] Figure 9 is a schematic diagram of a second heat pipe of the present invention;

[0030] Figure 10 It is a schematic diagram of the discharge bin of the present invention;

[0031] In the figure: 1, first drying chamber; 2, second drying chamber; 3, first storage chamber; 4, first feed pipe; 5, second storage chamber; 6, second feed pipe; 7, support frame; 8, hydraulic press; 9, first connecting rod; 10, support plate; 11, empty pipe; 12, feed chamber; 13, first guide tube; 14, first pump; 15, first track; 16, second connecting rod; 17, guide pipe; 18, guide hole; 19, guide trough; 20, feed hole; 21, third connecting rod; 22, second motor; 2 3. Heat exchange chamber; 24. First heat pipe; 25. Fourth connecting rod; 26. Third motor; 27. Second fan assembly; 28. Fifth connecting rod; 29. Fourth motor; 30. Third fan assembly; 31. Discharge bin; 32. Heat source; 33. Mixing bin; 34. Third feed pipe; 35. Vertical pole; 36. Short pole; 37. Fifth motor; 38. Electric telescopic rod; 39. Press plate; 40. Protruding structure; 41. Fourth feed pipe; 42. Second heat pipe; 43. First fan assembly. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] See also Figure 1-10 The present invention provides a technical solution: a dryer for producing fungicides, comprising a first drying chamber 1 and a second drying chamber 2, wherein a first storage chamber 3 is provided on the feeding side of the first drying chamber 1, and a first feeding pipe 4 is provided on the outer shell of the first storage chamber 3, and the first feeding pipe 4 is used to continuously feed the first storage chamber 3, and a first medium is stored in the first storage chamber 3;

[0034] The first drying chamber 1 and the second drying chamber 2 are connected to a matching heat source 32, and the heat source 32 supplies energy to the first drying chamber 1 and the second drying chamber 2. The heat source 32 transmits heat medium through the connecting pipe to increase the temperature of the first drying chamber 1 and the second drying chamber 2.

[0035] A second storage bin 5 is provided on the feeding side of the second drying bin 2. A second feeding pipe 6 is provided on the outer shell of the second storage bin 5. The second feeding pipe 6 is used to continuously feed the second storage bin 5. The second medium is stored in the second storage bin 5.

[0036] The first medium and the second medium are mixed to form a complete fungicide. The first medium is the heat-sensitive material in the fungicide, and the second medium is the non-heat-sensitive material in the fungicide. The two media are dried separately and different drying processes are used to speed up the drying process while reducing the drying energy consumption.

[0037] The first drying chamber 1 uses a low-temperature drying heat source;

[0038] A hydraulic lifting assembly is provided on one side of the first drying bin 1 and the second drying bin 2. The hydraulic lifting assembly includes a support frame 7 standing on the ground, a hydraulic press 8 is installed in the inner frame of the support frame 7, the output end of the hydraulic press 8 is facing upward and a first connecting rod 9 is fixedly installed, the first connecting rod 9 extends toward the drying bin and a support plate 10 is fixedly installed, a plurality of empty pipes 11 are evenly and equidistantly installed at the bottom of the support plate 10, a feed bin 12 is fixedly installed on the bottom of the plurality of empty pipes 11, a first conduit 13 is provided between the feed bin 12 and the storage bin, the middle part of the first conduit 13 is a telescopic structure, which can be extended and retracted following the lifting movement of the first connecting rod 9, and a first pump 14 is provided in the part of the first conduit 13 in the storage bin, and the function of the first pump 14 is to transport the medium in the storage bin through the first conduit 13 to the first drying bin 1 and the second drying bin 2 for drying in the first drying bin 1 and the second drying bin 2;

[0039] A first track 15 is provided in the empty pipe 11, and a second connecting rod 16 is slidably connected to the first track 15. A guide pipe 17 is fixedly installed at the bottom of the second connecting rod 16. The guide pipe 17 is a hollow structure with no seal at the bottom. A plurality of guide holes 18 are provided on the side wall of the guide pipe 17. A guide trough 19 is provided on the top of the first drying bin 1 and the second drying bin 2. The specifications of the guide trough 19 match those of the feed bin 12. A plurality of feed holes 20 are provided in the guide trough 19, and the specifications of the feed holes 20 match those of the guide pipe 17. A plurality of microvalves are provided at the bottom of the feed bin 12. The microvalves are vertically aligned with the axis of the guide pipe 17 and their specifications match. Before medium transmission, the control system drives the hydraulic press 8 to operate, driving the first connecting rod 9 to descend. The descent of the first connecting rod 9 drives the support plate 10 to descend. The descent of the support plate 10 drives the empty pipe 11 to descend. The descent of the empty pipe 11 drives the feed bin 12 to descend until the feed bin 12 descends and fits into the guide trough 19. Then the control system drives the microvalves to open. Then drive the second connecting rod 16 to descend along the first track 15, and the second connecting rod 16 descends and drives the guide tube 17 to descend, and the guide tube 17 descends to a state where it is matched with the feed hole 20. At this time, the medium can enter the drying bin through the guide hole 18, and the diameter of each guide tube 17 is fixed, which means that the amount of medium transported by each guide tube 17 is fixed. The direct delivery of the medium to the drying bin is replaced by the delivery through a plurality of guide tubes 17. The medium delivery amount can be controlled by controlling the number of opened microvalves and the number of guide tubes 17 driven into place. The setting of the guide tube 17 provides a buffer process for the delivery of the medium, increases the link of the medium entering the guide tube 17 through the guide hole 18 and then entering the drying bin, so that the medium has more links to extend the time of entering the drying bin, and a preheating process can be provided for the medium during this time. The setting of the guide hole 18 prevents the medium from stacking together and entering the drying bin, and loosens the medium by physical structure to avoid the situation where the medium sticks in the drying bin.

[0040] A rubber pad is provided at the joint between the feed bin 12 and the guide trough 19 to achieve a sealing effect;

[0041] A preheating device is provided in the feed bin 12. The preheating device may include an electric heating wire or a hot air circulation system and is installed on the inner wall of the feed bin 12. The preheating device is linked to the hydraulic lifting assembly through a control system. When the hydraulic press 8 begins to descend, the preheating device automatically starts to preheat the medium entering the feed bin 12. The synchronous operation of the preheating device and the hydraulic lifting assembly ensures that the medium has reached a certain temperature before entering the drying bin, reducing the heating time in the drying bin, thereby further reducing energy consumption. The preheating system can significantly improve the drying efficiency, reduce the heating time in the drying bin, reduce energy consumption, and at the same time prevent heat-sensitive media from being damaged by sudden high temperatures.

[0042] Temperature sensors are installed in the first drying chamber 1 and the second drying chamber 2 to monitor the temperature in the drying chamber in real time. The temperature sensors are connected to the control system, which automatically adjusts the heating power in the drying chamber and the heating intensity of the preheating device based on the data fed back by the sensors. The temperature monitoring system is linked with the preheating system and the heating system of the drying chamber to ensure that the medium is always within the optimal temperature range during the drying process to avoid overheating or overcooling. The temperature monitoring and feedback system can accurately control the temperature during the drying process to ensure that both heat-sensitive and non-heat-sensitive media are dried under optimal conditions, thereby improving product quality.

[0043] The upper limit value of the preheating temperature of the heat-sensitive medium by the preheating device is pre-set in the control system;

[0044] A heat recovery device is provided at the exhaust port of the first drying bin 1 and the second drying bin 2. The heat recovery device is divided into two groups. The first group is provided in the upper inner area of the guide pipe 17, including a third connecting rod 21 fixedly installed in the guide pipe 17, a second motor 22 is installed at the end of the third connecting rod 21, and a first fan assembly 43 is fixedly installed at the output end of the second motor 22. When preheating the feed bin 12, the control system drives the second motor 22 to rotate to rotate the first fan assembly 43 to the upward blowing direction. The first fan assembly 43 in this direction runs through the feed hole 20 to draw the hot air flow in the drying bin into the feed bin 12, thereby achieving the purpose of auxiliary heating. The effect of the extracted heat energy on the drying bin is negligible. If there is no need to transport the medium to the drying bin, the control system drives the second motor 22 to rotate to rotate the first fan assembly 43 to the downward blowing direction. The first fan assembly 43 in this direction runs through the feed hole 20 to draw the hot air flow in the feed bin 12 into the drying bin, thereby avoiding ineffective waste of heat energy in the feed bin 12.

[0045] The second group is a heat exchange chamber 23 arranged on one side of the drying chamber. A first heat conducting pipe 24 is extended from the top of the heat exchange chamber 23 to connect with the drying chamber. A fourth connecting rod 25 is fixedly installed in the first heat conducting pipe 24. A third motor 26 is fixedly installed at the end of the fourth connecting rod 25. A second fan assembly 27 is fixedly installed at the output end of the third motor 26. A second heat conducting pipe 42 is extended from the bottom of the heat exchange chamber 23 to connect with the drying chamber. A high-temperature resistant filter is provided at the connection between the second heat conducting pipe 42 and the heat exchange chamber 23 to prevent the medium from leaking into the second heat conducting pipe 42. A second heat conducting pipe 42 is fixedly installed in the second heat conducting pipe 42. A fifth connecting rod 28 is installed, a fourth motor 29 is fixedly installed at the end of the fifth connecting rod 28, and a third fan assembly 30 is fixedly installed at the output end of the fourth motor 29. Airflow interaction is formed between the drying chamber, the first heat conducting pipe 24, the heat exchange chamber 23, and the second heat conducting pipe 42. A vent hole equipped with an intelligent valve is provided at the bottom of the heat exchange chamber 23. Through this vent hole, the control system can realize airflow interaction between the heat exchange chamber 23 and the outside world. The heat energy recovery device exchanges heat between the hot air and the fresh air outside through the heat exchange chamber 23, recovering part of the heat energy while replacing the heated air flow.

[0046] The temperature sensors are arranged in several groups from top to bottom. The detection value of each group of temperature sensors is an independent value, which is independently obtained by the control system. The control system obtains the temperature of all temperature sensors in the drying chamber in real time. The control system sets the temperature value detected by the temperature sensor of the top layer as H1, and the control system sets the temperature value detected by the temperature sensor of the bottom layer as H2. If the temperature value of H1 is much greater than H2, the control system drives the second fan assembly 27 to first extract the air flow in the drying chamber through the first heat conduction pipe 24 to the heat exchange chamber 23, and then uses the third fan assembly 30 to extract the air flow in the heat exchange chamber 23 through the second heat conduction pipe. The heat pipe 42 transports the air into the drying chamber to avoid a large difference between the temperature above the medium in the drying chamber and the temperature that the medium can actually contact, which would cause uneven drying of the medium. If the temperature difference between H1 and H2 is within a preset range, the control system drives the third fan assembly 30 to first transport the air in the drying chamber through the second heat pipe 42 to the heat exchange chamber 23, and then drives the second fan assembly 27 to draw the air in the heat exchange chamber 23 through the first heat pipe 24 into the drying chamber, so as to avoid the temperature at the bottom of the drying chamber being too high, causing over-drying of the medium, or the medium sticking to the bottom of the drying chamber due to direct contact with the high temperature.

[0047] The temperature data difference between H1 and H2 is pre-entered into the control system;

[0048] For example, if H1-H2>10℃, it is much greater than;

[0049] The heat recovery system can significantly reduce energy consumption during the drying process, reduce energy waste, and comply with environmental protection requirements. Through temperature monitoring by temperature sensors, the temperature fluctuations in the drying chamber can be regulated in real time, and the medium can be dried at a continuous and stable temperature, thereby improving the retention rate of the active ingredients of the fungicide.

[0050] A discharge bin 31 is provided on one side of the heat exchange bin 23. The bottom of the discharge bin 31 is connected to the bottom of the drying bin through a third delivery pipe 34. A second pump is provided at the connection between the third delivery pipe 34 and the drying bin. The medium is delivered to the discharge bin 31 through the second pump. The top of the discharge bin 31 is connected to the top of the drying bin through a fourth delivery pipe 41. The fourth delivery pipe 41 is provided with a directional fan assembly. The airflow in the drying bin is delivered to the discharge bin 31 through the fourth fan assembly. The bottom of the discharge bin 31 is fixed. Several vertical poles 35 are installed, and several short rods 36 are set on the side wall of each vertical pole 35. A fifth motor 37 is set at the bottom of the vertical pole 35. The output end of the fifth motor 37 is connected to the vertical pole 35. The fifth motor 37 is driven by the control system to operate, drive the vertical pole 35 to rotate, and then drive the short rod 36 to operate to achieve stirring of the medium. An electric control telescopic rod 38 is fixedly installed on the top of the discharge bin 31. A pressure plate 39 is fixedly installed on the end of the electric control telescopic rod 38. A protruding structure 40 is set at the bottom of the pressure plate 39. The control system drives the vertical rod 35 to rotate and stir the medium in a fixed frequency process. When the vertical rod 35 is not running, the electric-controlled telescopic rod 38 is driven to descend, driving the pressure plate 39 to descend and then press the medium. If the medium is not dry enough, the pressure plate 39 cannot crush the medium. If the medium is too dry, the pressure plate 39 will press the medium so that the medium is too fine. The situation of the medium after being pressed by the pressure plate 39 is acquired by the camera component set in the outgoing silo 31. After acquiring the data, the camera component determines whether the medium is dried to a qualified standard through the control system. If the medium is dried to a qualified standard, the mixing process is started for all the media in the drying silo. If the medium is not dry enough, the fourth fan component is driven to transport the airflow in the drying silo to the discharge silo 31 to continue drying the medium until the medium in the discharge silo 31 passes the pressure test of the pressure plate 39. At this time, the drying silo continues to dry the medium inside it. If the medium is too dry, it means that this batch of medium has failed to dry. The medium is discharged and replaced with a new batch of raw materials for re-drying.

[0051] After the pressing plate 39 compresses the medium, the camera component analyzes the image to obtain the particle breakage rate and transmits it to the control system for judgment;

[0052] The pressing plate 39 is lowered by a preset distance and has no contact with the vertical pole 35;

[0053] The discharge bin 31 matched with the first drying bin 1 and the second drying bin 2 is connected to the mixing bin 33. A stirring device is installed in the mixing bin 33. The stirring device is driven by a control system and can evenly mix the drying media from the first drying bin 1 and the second drying bin 2. The mixing bin 33 is connected to the outlet of the discharge bin 31 through a pipeline. The dried media automatically enters the mixing bin 33 for mixing. The control system of the stirring device is linked to the outlet valve of the drying bin to ensure that the media are fully mixed in the mixing bin. It can ensure that the heat-sensitive media and the non-heat-sensitive media are evenly mixed after drying to form a complete fungicide, thereby improving the consistency and stability of the product.

[0054] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0055] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A dryer for producing fungicides, comprising a first drying chamber (1) and a second drying chamber (2), characterized in that: A first storage bin (3) is provided on the feeding side of the first drying bin (1), a first feeding pipe (4) is provided on the outer shell of the first storage bin (3), the first feeding pipe (4) is used for continuously feeding the first storage bin (3), and a first medium is stored in the first storage bin (3); A second storage bin (5) is provided on the feeding side of the second drying bin (2), a second feeding pipe (6) is provided on the outer shell of the second storage bin (5), the second feeding pipe (6) is used for continuously feeding the second storage bin (5), and the second storage bin (5) stores a second medium; The first drying chamber (1) and the second drying chamber (2) are both connected to a heat source (32); A hydraulic lifting assembly is provided on one side of each of the first drying bin (1) and the second drying bin (2), the hydraulic lifting assembly comprising a support frame (7) standing on the ground, a hydraulic press (8) being installed in an inner frame of the support frame (7), an output end of the hydraulic press (8) facing upward and fixedly mounted with a first connecting rod (9), the first connecting rod (9) extending toward the drying bin and fixedly mounted with a support plate (10), a plurality of empty pipes (11) being evenly and equidistantly installed at the bottom of the support plate (10); A first track (15) is provided in the empty tube (11), a second connecting rod (16) is slidably connected to the first track (15), and a material guide tube (17) is fixedly installed at the bottom of the second connecting rod (16); Heat recovery devices are provided at the exhaust ports of the first drying bin (1) and the second drying bin (2), and the heat recovery devices are divided into two groups. The heat recovery devices of the first group are provided in the upper inner region of the material guide pipe (17), and include a third connecting rod (21) fixedly installed in the material guide pipe (17), a second motor (22) is installed at the end of the third connecting rod (21), and a first fan assembly (43) is fixedly installed at the output end of the second motor (22); The heat energy recovery device of the second group is a heat exchange chamber (23) arranged on one side of the drying chamber, a first heat conducting pipe (24) extends from the top of the heat exchange chamber (23) and is connected to the drying chamber, a fourth connecting rod (25) is fixedly installed in the first heat conducting pipe (24), a third motor (26) is fixedly installed at the end of the fourth connecting rod (25), a second fan assembly (27) is fixedly installed at the output end of the third motor (26), and a second heat conducting pipe (42) extends from the bottom of the heat exchange chamber (23) and is connected to the drying chamber; A fifth connecting rod (28) is fixedly installed in the second heat conducting pipe (42), a fourth motor (29) is fixedly installed at the end of the fifth connecting rod (28), and a third fan assembly (30) is fixedly installed at the output end of the fourth motor (29); Temperature sensors are installed in the first drying chamber (1) and the second drying chamber (2). The temperature sensors are arranged in a plurality of groups from top to bottom. The detection values of each group of temperature sensors are independent values, which are independently obtained by the control system. The control system obtains the temperature of all temperature sensors in the drying chamber in real time. The control system sets the detection temperature value of the temperature sensor of the top layer to H1, and the control system sets the detection temperature value of the temperature sensor of the bottom layer to H2. If the temperature value of H1 is much greater than H2, the control system drives the second fan assembly (27) to first draw the airflow in the drying chamber through the first heat conducting pipe (24) to the heat exchange chamber (23), and then draws the heat exchange chamber (23) through the third fan assembly (30). The airflow in the heat exchange chamber (23) is transported to the drying chamber through the second heat conducting pipe (42), so as to avoid a large difference between the temperature above the medium in the drying chamber and the temperature that the medium can actually contact, which causes uneven drying of the medium. If the temperature difference between H1 and H2 is within a preset range, the control system drives the third fan assembly (30) to first transport the airflow in the drying chamber through the second heat conducting pipe (42) to the heat exchange chamber (23), and then drives the second fan assembly (27) to extract the airflow in the heat exchange chamber (23) through the first heat conducting pipe (24) to the drying chamber, so as to avoid the temperature at the bottom of the drying chamber being too high, causing the medium to be over-dried, or the medium to be adhered to the bottom of the drying chamber due to direct contact with high temperature.

2. A dryer for producing fungicides according to claim 1, characterized in that: A feed bin (12) is fixedly mounted on the bottoms of the plurality of empty tubes (11), and a first conduit (13) is provided between the feed bin (12) and the storage bin.

3. A dryer for producing fungicides according to claim 2, characterized in that: The material guiding pipe (17) is a hollow structure with no sealing at the bottom.

4. A dryer for producing fungicides according to claim 3, characterized in that: A plurality of guide holes (18) are provided on the side wall of the guide pipe (17); a guide trough (19) is provided on the top of each of the first drying bin (1) and the second drying bin (2); the specification of the guide trough (19) matches that of the feed bin (12); and a plurality of feed holes (20) are provided in the guide trough (19); A preheating device is provided in the feed bin (12), the preheating device is mounted on the inner wall of the feed bin (12), and the preheating device is connected to the hydraulic lifting assembly.

5. A dryer for producing fungicides according to claim 4, characterized in that: A plurality of micro valves are provided at the bottom of the feed bin (12), and the micro valves are vertically aligned with the axis of the guide tube (17).

6. A dryer for producing fungicides according to claim 5, characterized in that: A high-temperature resistant filter is provided at the connection between the second heat conducting pipe (42) and the heat exchange chamber (23).

7. A dryer for producing fungicides according to claim 6, characterized in that: A discharge bin (31) is provided on one side of the heat exchange bin (23), the bottom of the discharge bin (31) is connected to the bottom of the drying bin by providing a third delivery pipe (34), a second pump is provided at the connection between the third delivery pipe (34) and the drying bin, a fourth delivery pipe (41) is provided between the top of the discharge bin (31) and the top of the drying bin, and a directional fourth fan assembly is provided on the fourth delivery pipe (41).

8. A dryer for producing fungicides according to claim 7, characterized in that: A plurality of vertical rods (35) are fixedly installed at the bottom of the discharge bin (31), a plurality of short rods (36) are arranged on the side wall of each vertical rod (35), and a fifth motor (37) is arranged at the bottom of the vertical rod (35).

9. A dryer for producing fungicides according to claim 8, characterized in that: The discharge bins (31) matched with the first drying bin (1) and the second drying bin (2) are connected to a mixing bin (33) in common, and a stirring device is installed in the mixing bin (33).

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