Chrysanthemum seed drying device and preparation method thereof

Abstract

The application discloses a chrysanthemum rice drying equipment and a preparation method thereof. The drying equipment comprises a closed circulation drying system composed of a fan A, a drying box, a drying device and a gas supply bin. The fan A drives hot air to flow in the closed circulation drying system. The hot air of the gas supply bin flows into the drying box through the fan A, and then returns to the gas supply bin after being dried by the drying device. The number of the drying box is at least one. The fan A outlet is connected with a main pipeline system. A heating module A and a temperature detection module A are arranged in the main pipeline system in sequence along the air flow direction. The drying equipment provides the hot air with stable temperature to the drying box through the gas supply bin. The heating module A is arranged on the fan A and the drying box. The heating module A is started according to the requirement in the use process, so that the adjustment of the gas of the drying box is realized, and the drying with different temperatures is realized.

Description

Technical Field

[0001] This invention belongs to the field of chrysanthemum rice production and processing technology, and in particular relates to a chrysanthemum rice drying equipment and its preparation method. Background Technology

[0002] Chrysanthemum rice is a specialty of Suichang County. It is made from the unopened buds of a local superior variety of yellow chrysanthemum. Because the grains are about the size of rice grains, it is called chrysanthemum rice. The quality of chrysanthemum rice depends on the quality of harvesting and processing. Generally, after harvesting, chrysanthemum rice is spread out to wither, blanched, and then dried.

[0003] Currently, factory-scale mechanical processing generally adopts a processing method similar to that of green tea, namely hot air drying. For example, CN108562160A discloses a method for drying chrysanthemums: (1) Select the picked chrysanthemums and choose the intact ones; (2) Blanch the chrysanthemums obtained in step (1) at a temperature of 100-105℃ for 2-4 minutes; (3) Spread the blanched chrysanthemums on the table of the drying rack with a thickness of 8-10 cm, start the hot air generator, adjust the temperature in the drying room to 25-35℃, and maintain it for 3-4 hours; then, adjust the temperature in the drying room to 55-65℃ and maintain it for 18-19 hours; then, turn off the hot air generator, and when the temperature in the drying room drops to 40℃, transfer the chrysanthemums out of the drying room to obtain dried chrysanthemums with a moisture content of 8-12%. The above method of drying in a drying room has low overall efficiency and is only convenient for drying at one temperature.

[0004] For example, CN217275188U discloses a ventilation device for adjusting the temperature of a drying room, including a drying chamber. A drying body is connected to the bottom of the inner wall of the drying chamber. A dryer for drying medicinal materials is installed inside the drying body. A ventilation duct is located on the upper surface of the drying chamber. An exhaust fan is installed on the inner wall of the ventilation duct. The exhaust fan is connected to the inner wall of the ventilation duct via a support platform. The connection point between the exhaust fan and the ventilation duct is located at the other end of the ventilation duct. The exhaust port of the drying body is connected to the ventilation duct via an exhaust pipe. The diameter of the exhaust pipe is smaller than the diameter of the ventilation duct. Air circulation channels are provided on both sides of the connection point between the ventilation duct and the exhaust pipe. A controller is connected to one inner wall of the drying chamber, and a temperature sensor is connected to the top of the inner wall of the drying chamber. The exhaust fan and the temperature sensor are electrically connected to the controller. Although this device can adjust the temperature of the drying chamber during drying and achieve multi-level drying, in practice, due to the large space of the drying chamber, adjusting from high temperature to low temperature and then from low temperature to high temperature not only consumes a certain amount of time but also wastes a significant amount of energy. Summary of the Invention

[0005] The purpose of this invention is to provide a chrysanthemum rice drying device and its preparation method. By setting up a gas supply chamber to provide hot air at a stable temperature to the drying chamber, and by setting up a heating module A in the fan A and the drying chamber, the heating module A can be activated according to the needs during use, thereby adjusting the gas in the drying chamber. While realizing drying at different temperatures, this invention solves the problem in the prior art that adjusting from high temperature to low temperature and then from low temperature to high temperature not only consumes a certain amount of time but also wastes a lot of energy.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0007] This invention relates to a chrysanthemum rice drying device, comprising a closed-loop drying system consisting of a fan A, a drying chamber, a drying device, and an air supply chamber. The fan A drives a hot airflow within the closed-loop drying system. The hot air from the air supply chamber is driven by the fan A into the drying chamber, then dried by the drying device and returned to the air supply chamber. At least one drying chamber is provided. A first pipe connects the air inlet of the drying chamber to the air outlet of the fan A, and a valve is installed on the first pipe. The air inlet of the drying chamber is also connected to a fan B via a second pipe, and a valve is installed on the second pipe. The air outlet of the drying chamber is connected to a circulation pipe connected to the drying device via a third pipe, and a valve is installed on the third pipe. The air outlet of the drying chamber is also connected to a fourth pipe, and a valve is installed on the fourth pipe.

[0008] Furthermore, the outlet of the fan A is connected to the main pipeline system, and the heating module A and the temperature detection module A are sequentially arranged along the airflow direction in the main pipeline system.

[0009] Furthermore, a temperature detection module B is installed in the pipe between the fan A and the air supply chamber, and a heating module B is installed in the air supply chamber; a humidity sensor B is installed between the drying device and the air supply chamber, and a humidity sensor A is installed on the circulation pipeline.

[0010] Furthermore, the drying oven includes a box body with an open top and a lid that forms a seal on the top of the box body; an air intake structure A and an air intake structure B are provided on one side wall of the box body, and an exhaust structure A and an exhaust structure B are provided on the other side wall;

[0011] Furthermore, the box is equipped with a drying mechanism formed by stacking multiple drying trays, and the chrysanthemum rice is laid flat in the drying trays during use.

[0012] Furthermore, the exhaust structure A and the intake structure A are respectively installed on opposite side walls of the housing; the intake structure A and the intake structure B are respectively connected to pipe one and pipe two; the exhaust structure A and the exhaust structure B are respectively connected to pipe three and pipe four.

[0013] Furthermore, the drying tray includes a rectangular box-shaped tray body with handles at both ends of the upper part of the tray body; the tray body includes a rectangular frame and a perforated support plate; an L-shaped support is provided on each of the four corners of the upper part of the rectangular frame; when the drying trays are stacked, the lower L-shaped support is supported on the bottom side of the upper perforated support plate; the bottom side of the perforated support plate is also provided with several inclined airflow guide plates at equal intervals along the airflow direction; the bottom side of the box is provided with an L-shaped pillar supported on the bottom side of the bottom perforated support plate.

[0014] Furthermore, it also includes two fixing components for securing multiple stacked drying trays; the fixing components include a rectangular plate A abutting against the bottom side of the bottom tray body and a rectangular plate B abutting against the upper surface of the top tray body; the two ends of the rectangular plate A are respectively provided with through holes A, and the two ends of the rectangular plate B are respectively provided with through holes B; during installation, a T-shaped rod with a threaded section at one end is used to pass through the through holes A and B in sequence, and a nut is provided on the threaded section.

[0015] Furthermore, it also includes a material feeding mechanism for feeding material onto the tray body of the drying mechanism; the material feeding mechanism includes multiple material feeding chutes that cooperate with the tray body one by one and are inserted into the tray body above the tray body, and the material feeding chutes are inclined; the top of any material feeding chute is connected to a hopper with a gate below; it also includes a movable platform located at the bottom of the material feeding chutes; during material feeding, the drying mechanism is controlled to be placed on the movable platform, at which time the movable platform moves to the maximum position closer to the material feeding chutes; the gate is opened, and the movable platform is controlled to slowly move to the maximum position away from the material feeding chutes.

[0016] A method for preparing chrysanthemum rice includes processing the following steps using a chrysanthemum rice drying equipment as described above: first cooling, initial drying, second cooling, and re-drying.

[0017] Preparation methods include:

[0018] Step 1: After harvesting the chrysanthemum rice, promptly spread it out on a well-ventilated, dry, and clean cement surface for greening.

[0019] Step 2: Use a drum-type blanching machine to perform blanching;

[0020] Step 3: Place the blanched chrysanthemum rice into a drying oven and allow room temperature air to be introduced into the drying oven for a cooling time t2; then, use fan A to introduce hot air at 100-110℃ into the drying oven for initial drying time t1.

[0021] Step 4: Introduce room temperature air into the drying oven for a second cooling time of t3; then, use fan A to introduce hot air at 80-90℃ into the drying oven for a second drying time of t4.

[0022] Step 5: Remove the chrysanthemum rice from the drying box and cool it using a ventilated device.

[0023] Furthermore, the number of drying boxes is two, and t1, t2, t3 and t4 are all the same and all last for 1-2 hours.

[0024] The present invention has the following beneficial effects:

[0025] This invention provides a stable temperature of hot air to the drying chamber by setting up a gas supply chamber, and by setting up a heating module A in both the fan A and the drying chamber, the heating module A can be activated as needed during use, thereby adjusting the gas in the drying chamber and enabling drying at different temperatures.

[0026] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a system diagram of the drying equipment of the present invention;

[0029] Figure 2 This is a schematic diagram of the drying oven from the right side view of the present invention;

[0030] Figure 3 This is a schematic diagram of the drying oven from the left side of the present invention.

[0031] Figure 4 This is a schematic diagram of the drying tray structure of the present invention;

[0032] Figure 5 for Figure 4 The main view;

[0033] Figure 6 This is a schematic diagram of the drying mechanism of the present invention;

[0034] Figure 7 for Figure 6 The main view;

[0035] Figure 8 This is a schematic diagram of the combined structure of the drying mechanism and the cloth-making mechanism of the present invention. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0038] Please see Figure 1 As shown, the present invention is a chrysanthemum rice drying device, including an air supply chamber 4 with a heating module B inside. The hot air from the air supply chamber 4 is driven by a fan A1 into the drying chamber 2, and then dried by a drying device 3 before flowing back to the air supply chamber 4. The air inlet of the drying chamber 2 is also connected to a fan B5 through a pipe 51.

[0039] In this application, while keeping fans B5 and A1 running continuously, the drying box 2 is set up in three groups, labeled H1, H2 and H3 respectively;

[0040] Based on this setting, the present invention provides a method for preparing chrysanthemum rice, which specifically includes:

[0041] Preparation methods include:

[0042] Step 1: After harvesting the chrysanthemum rice, promptly spread it out on a well-ventilated, dry, and clean cement surface for greening.

[0043] Step 2: Use a drum-type blanching machine to perform blanching;

[0044] Step 3: Place the blanched chrysanthemum rice into drying box 2 and allow room temperature air to circulate into drying box 2 for a 2-hour cooling process; then, use fan A1 to circulate hot air at 100-110℃ into drying box 2 for an initial drying process of 2 hours.

[0045] Step 4: Allow room temperature air to circulate into drying oven 2 for a second cooling process of 2 hours; then, use fan A1 to circulate hot air at 80-90℃ into drying oven 2 for a second drying process of 2 hours.

[0046] Step 5: Remove the chrysanthemum rice from the drying box 2 and cool it using a ventilated device.

[0047] When the number of drying boxes 2 is equipped with 3 sets, based on the above settings, the blanched chrysanthemum rice is first placed into H1, and H1 is cooled once. Then, H1 is initially dried while the blanched chrysanthemum rice is placed into H2, and H2 is cooled once. After the initial drying of H1 is completed, the first cooling of H2 is completed. Then, H1 is cooled a second time while H2 is simultaneously initially dried. After the second cooling of H1 is completed, the initial drying of H2 is completed. At this time, the process is switched to re-drying of H1 while H2 is simultaneously cooled a second time. The chrysanthemum rice in H1 is now dry. The blanched chrysanthemum rice is placed into H3, and H3 is cooled once while H2 is simultaneously re-dried. During this process, H1 is opened and the chrysanthemum rice inside is removed. Just before H3 is about to complete its first cooling, the blanched chrysanthemum rice is placed back into H1. After the first cooling of H3 is completed, the process is switched to de-drying of H3. At this time, H1 is cooled once while the chrysanthemum rice in H2 is dried. The above operation can be repeated.

[0048] Based on the above, in actual operation, when the drying equipment is started, timing begins when the chrysanthemum rice in H1 begins its initial drying. The humidity of the gas discharged from H1 is detected by a humidity sensor A31 to determine the degree of dryness. When the detected gas humidity meets the set value, timing stops, and it is determined whether the cumulative time T is between 1 and 2 hours. If T ≥ 2 hours, then t1, t2, t3, and t4 are set to 2 hours; or if T ≤ 1 hour, then t1, t2, t3, and t4 are set to 1 hour; when T is between 1 and 2 hours, then t1, t2, t3, and t4 are set to T.

[0049] It is understandable that, such as Figure 1 The present invention comprises a closed-loop drying system consisting of a fan A1, a drying box 2, a drying device 3, and an air supply chamber 4, wherein the fan A1 drives the hot airflow to flow within the closed-loop drying system.

[0050] It is understandable that, in the above, the initial drying temperature is higher than the re-drying temperature, such as... Figure 1 Because the gas supply chamber 4 is large, it is inconvenient to adjust the air temperature inside the gas supply chamber 4 from the initial drying temperature to the re-drying temperature and from the re-drying temperature to the initial drying temperature in practice. At the same time, in order to reduce energy consumption, the present invention connects the main pipeline system 100 to the air outlet of the fan A1. The heating module A10 and the temperature detection module A11 are arranged sequentially along the airflow direction in the main pipeline system 100.

[0051] Based on the above, in the initial stage, the heating module B heats the gas in the gas supply chamber 4 and maintains a stable power to keep the gas temperature in the gas supply chamber 4 stable between 75-90℃; when the drying chamber 2 is initially dried, the heating module A10 set on the main pipeline system 100 is activated to heat the gas and ensure that the gas temperature entering the drying chamber 2 meets the requirement of 100-110℃.

[0052] Meanwhile, in order to prevent the temperature of the gas flowing back to the gas supply chamber 4 after drying by the drying device 3 from exceeding 90°C, the present invention provides a temperature sensor C42 and a heat exchanger 43 at the gas inlet end of the gas supply chamber 4; when the temperature sensor C42 detects that the air temperature is higher than 88°C, the heat exchanger 43 is activated to cool the gas flowing back to the gas supply chamber 4, and the temperature is controlled to be reduced to 80°C.

[0053] like Figure 1 Of course, in order to make better switching operations during the above drying process, a pipe 12 is connected between the air inlet of the drying box 2 and the air outlet of the fan A1, and a valve 13 is installed on the pipe 12. At the same time, a valve 22 is installed on the pipe 2. The air outlet of the drying box 2 is connected to the circulation pipe 30 on the drying device 3 through the pipe 3 21, and a valve 322 is installed on the pipe 3 21. The air outlet of the drying box 2 is also connected to the pipe 4 23, and a valve 44 is installed on the pipe 4 23.

[0054] Based on this, during the first and second cooling processes in the drying oven 2, valves 4 24 and 2 52 are kept open, while valves 1 13 and 3 22 are closed; when the drying oven 2 is undergoing initial drying and re-drying, valves 1 13 and 3 22 are kept open, while valves 4 24 and 2 52 are closed.

[0055] Based on the above, in order to perform intelligent control, the present invention also includes a temperature sensor C42 connected to valve 13, valve 32, valve 44, valve 252, heating module A10, temperature detection module A11, heat exchanger 43 and temperature sensor C42.

[0056] It is understandable that the humidity sensor A31 mentioned above is installed on the circulation pipeline 30.

[0057] It is understood that in some possible implementations, a temperature detection module B41 is installed in the pipe between the fan A1 and the air supply chamber 4. The temperature detection module B41 detects the temperature of the gas entering the fan A1, so that during the de-drying stage, the heating power of the heating module A10 inside the main pipeline system 100 can be adjusted to control the air temperature to rise to 100-110°C before sending it into the drying chamber 2.

[0058] Meanwhile, in this invention, a humidity sensor B32 is installed between the drying device 3 and the air supply chamber 4. The humidity sensor B32 is used to determine the moisture content in the hot air flowing back into the air supply chamber 4. When the moisture content is high, the drying component in the drying device 3 is replaced. Of course, the drying device 3 can be configured as two parallel drying modules, so that one is on standby and the other is in use. Thus, when the drying component in one drying module is replaced, the other drying module is started, so that the drying component can be replaced without stopping the machine.

[0059] In one specific implementation, such as Figure 2-3 The drying oven 2 includes a box body 20 with a top opening and a lid 200 that forms a seal on the top of the box body 20; the opposite side walls of the box body 20 are respectively an air inlet side and an air outlet side; the side wall of the air inlet side is provided with an air inlet structure A201 and an air inlet structure B202, and the side wall of the air outlet side is provided with an exhaust structure A203 and an exhaust structure B204; the air inlet structure A201 and the air inlet structure B202 are respectively connected to pipe 12 and pipe 51; the exhaust structure A203 and the exhaust structure B204 are respectively connected to pipe 21 and pipe 23; at the same time, the box body 20 is provided with a drying mechanism formed by multiple stacked drying trays, and the rice is laid flat in the drying trays during use.

[0060] Understandably, this is to facilitate the stacking of drying trays, such as Figure 4-5 The provided drying tray includes a rectangular box-shaped tray body 6, which includes a rectangular frame 60 and a perforated support plate 601. An L-shaped support part 62 is provided on each of the four corners of the upper part of the rectangular frame 60. When the drying trays are stacked, the lower L-shaped support part 62 is supported on the bottom side of the upper perforated support plate 601, and the L-shaped support part 62 is located inside the rectangular frame 60. The L-shaped support part 62 is used to support and limit the adjacent two layers of drying trays. Handles 61 are provided at both ends of the upper part of the tray body 6.

[0061] Based on the above, after the drying mechanism is placed inside, since the air intake direction is parallel to the surface of the tray body 6, in order to enhance the drying effect, such as... Figure 5 The bottom side of the porous support plate 601 is also provided with several inclined airflow guide plates 63 at equal intervals along the airflow direction. By using the obstruction and guidance of the airflow by the airflow guide plates 63, the airflow from the bottom of the porous support plate 601 is guided upward and passes through the porous support plate 601, thereby improving the overall drying effect. During installation, the airflow guide plates 63 are inclined towards the side closer to the air inlet.

[0062] like Figure 6-7The bottom side of the housing 20 is provided with an L-shaped support column that is supported on the bottom side of the bottom perforated support plate 601. At the same time, it is convenient to control and fix multiple stacked drying trays, which is convenient for subsequent removal and placement of the whole. This application provides two fixing components, including a rectangular plate A65 that abuts against the bottom side of the bottom tray body 6 and a rectangular plate B66 that abuts against the upper surface of the top tray body 6. The two ends of the rectangular plate A65 are respectively provided with through holes A, and the two ends of the rectangular plate B66 are respectively provided with through holes B. During installation, a T-shaped rod 67 with a threaded section 671 at one end is used to pass through the through holes A and B in sequence, and a nut 672 is provided on the threaded section 671. By rotating the nut 672, the drying mechanism is fixed by the rectangular plates A65 and B66.

[0063] It is understandable that, as described above, when using a drying mechanism to dry chrysanthemum rice, such as... Figure 8 To facilitate the spreading of chrysanthemum rice onto the tray body 6, this invention also includes a feeding mechanism 7. This feeding mechanism 7 has multiple feeding chutes 70 that cooperate with the tray body 6 and are inserted into the tray body 6, with the feeding chutes 70 being inclined. The top of each feeding chute 70 is connected to a hopper 71 with a gate at the bottom. A movable platform 8 for placing a drying mechanism is located at the bottom of the feeding chutes 70. During feeding, the drying mechanism is placed on the movable platform 8, which then moves to its maximum position closer to the feeding chutes 70. The gate is then opened, and the movable platform 8 slowly moves to its maximum position further away from the feeding chutes 70. Based on the above, the feeding of chrysanthemum rice is completed. By controlling the movement of the movable platform 8, the relative displacement between the drying mechanism and the feeding chutes 70 is caused, thereby facilitating the even spreading of chrysanthemum rice onto the tray body 6.

[0064] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0065] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A chrysanthemum rice drying device, characterized in that: It includes a closed-loop drying system consisting of a fan A (1), a drying box (2), a drying device (3), and an air supply chamber (4); The fan A (1) drives the hot airflow to flow within the closed-loop drying system; The hot air from the air supply chamber (4) is driven by the fan A (1) into the drying box (2), and then dried by the drying device (3) before flowing back to the air supply chamber (4). The number of drying boxes (2) shall be at least one; The air inlet of the drying box (2) and the air outlet of the fan A (1) are connected by a pipeline (12), and a valve (13) is installed on the pipeline (12). The air inlet of the drying box (2) is also connected to a fan B (5) through a second pipe (51), and a second valve (52) is provided on the second pipe (51). The outlet of the blower A (1) is connected to the main pipeline system (100), and the heating module A (10) and the temperature detection module A (11) are arranged sequentially along the airflow direction in the main pipeline system (100); the outlet of the drying box (2) is connected to the circulation pipeline (30) connected to the drying device (3) through the pipeline three (21), and the valve three (22) is arranged on the pipeline three (21). The air outlet of the drying box (2) is also connected to a pipe four (23), and a valve four (24) is installed on the pipe four (23); a temperature detection module B (41) is installed in the pipe between the fan A (1) and the air supply chamber (4), and a heating module B is installed in the air supply chamber (4); a humidity sensor B (32) is installed between the drying device (3) and the air supply chamber (4), and a humidity sensor A (31) is installed on the circulation pipe (30); In the initial stage, the heating module B controls the heating of the gas in the gas supply chamber (4) and maintains a stable power to keep the gas temperature in the gas supply chamber (4) stable between 75-90℃; when the drying box (2) is initially dried, the heating module A (10) set on the main pipeline system (100) is started to heat the gas to ensure that the gas temperature entering the drying box (2) meets 100-110℃. In order to avoid the gas temperature flowing back to the gas supply chamber (4) after drying by the drying device (3) being higher than 90℃, a temperature sensor C (42) and a heat exchanger (43) are set at the gas inlet of the gas supply chamber (4); when the temperature sensor C (42) detects that the air temperature is higher than 88℃, the heat exchanger (43) is started to cool the gas flowing back to the gas supply chamber (4) and control the temperature to drop to 80℃.

2. The chrysanthemum rice drying equipment according to claim 1, characterized in that, The drying oven (2) includes a box body (20) with an open top and a lid (200) forming a seal on the top of the box body (20); an air intake structure A (201) and an air intake structure B (202) are provided on one side wall of the box body (20), and an exhaust structure A (203) and an exhaust structure B (204) are provided on the other side wall. Furthermore, the box (20) is equipped with a drying mechanism formed by stacking multiple drying trays, and the chrysanthemum rice is laid flat in the drying trays during use.

3. The chrysanthemum rice drying equipment according to claim 2, characterized in that, The exhaust structure A (203) and the intake structure A (201) are respectively installed on the opposite side walls of the housing (20); the intake structure A (201) and the intake structure B (202) are respectively connected to pipe one (12) and pipe two (51); the exhaust structure A (203) and the exhaust structure B (204) are respectively connected to pipe three (21) and pipe four (23).

4. The chrysanthemum rice drying equipment according to claim 2, characterized in that, The drying tray includes a rectangular box-shaped tray body (6), and handles (61) are provided at both ends of the upper part of the tray body (6). The tray body (6) includes a rectangular frame (60) and a perforated support plate (601). An L-shaped support (62) is provided on each of the four corners of the upper part of the rectangular frame (60); When the drying trays are stacked, the lower L-shaped support (62) is supported on the bottom side of the upper porous support plate (601); The bottom side of the porous support plate (601) is also provided with several inclined airflow guide plates (63) at equal intervals along the airflow direction. The bottom side of the box (20) is provided with an L-shaped support column that is supported on the bottom side of the bottom porous support plate (601).

5. The chrysanthemum rice drying equipment according to claim 4, characterized in that, It also includes two fixing components for securing multiple stacked drying trays; The fixing component includes a rectangular plate A (65) abutting against the bottom side of the bottom tray body (6) and a rectangular plate B (66) abutting against the upper surface of the top tray body (6); the two ends of the rectangular plate A (65) are respectively provided with through holes A, and the two ends of the rectangular plate B (66) are respectively provided with through holes B; during installation, a T-shaped rod (67) with a threaded section (671) at one end is used to pass through the through holes A and B in sequence, and a nut (672) is provided on the threaded section (671).

6. The chrysanthemum rice drying equipment according to claim 5, characterized in that, It also includes a fabric feeding mechanism (7) for feeding fabric onto the tray body (6) of the drying mechanism; the fabric feeding mechanism (7) includes a plurality of fabric chutes (70) that cooperate one-to-one with the tray body (6) and are inserted into the tray body (6) above the tray body (6), and the fabric chutes (70) are inclined; The top of any fabric chute (70) is connected to a hopper (71) with a gate below it; It also includes an active platform (8) located at the bottom of the fabric chute (70); When the fabric is being laid, the drying mechanism is placed on the movable platform (8), and the movable platform (8) moves to the maximum position on the side closer to the fabric chute (70); the gate is opened, and the movable platform (8) is slowly moved to the maximum position on the side away from the fabric chute (70).

7. A method for preparing chrysanthemum rice, characterized in that, This includes the first cooling, initial drying, second cooling, and re-drying processes in the chrysanthemum rice drying equipment described in any one of claims 1-6 above. Preparation methods include: Step 1: After harvesting the chrysanthemum rice, promptly spread it out on a well-ventilated, dry, and clean cement surface for greening. Step 2: Use a drum-type blanching machine to perform blanching; Step 3: Place the blanched chrysanthemum rice into the drying box (2) and introduce room temperature air into the drying box (2) for a cooling time t2; then, use fan A (1) to introduce hot air at 100-110℃ into the drying box (2) for a preliminary drying time t1. Step 4: Pass room temperature air into the drying box (2) for a second cooling time of t3; then pass hot air at 80-90℃ into the drying box (2) through fan A (1) for a second drying time of t4. Step 5: Remove the chrysanthemum rice from the drying box (2) and cool it with a ventilated device.

8. The method for preparing chrysanthemum rice according to claim 7, characterized in that, The number of drying boxes (2) is 2, and t1, t2, t3 and t4 are all the same and all take 1-2 hours.

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