Vegetable drying device

Abstract

The present invention relates to the technical field of vegetable drying, and specifically to a vegetable drying device, comprising a machine body and a drying cylinder, wherein a first dryer or a second dryer is installed in the drying cylinder, wherein a plurality of coaxially distributed wire mesh rings are installed in the first dryer, wherein the wire mesh ring has a cavity for accommodating vegetables, and the vegetables are fixed in the cavity without overlapping and dried, and the vegetables in the second dryer can be dried in a stirring state. The present invention provides a drying device comprising a first dryer and a second dryer, and preliminarily distinguishes the vegetables according to their morphological parts and the volume and weight after cutting. The two dryers respectively process vegetables of different shapes, so that the vegetables can be dried in a suitable manner. When drying vegetables with appearance requirements, the vegetable pieces can be kept in a better shape, and the drying efficiency and uniformity of the vegetables can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of vegetable drying, and in particular to a vegetable drying device. Background Art

[0002] Vegetable drying can remove most of the moisture in vegetables, effectively preventing the deterioration and rotting of vegetables, thereby significantly extending the shelf life of vegetables. At the same time, the dried vegetables become smaller in size and lighter in weight, making them more convenient to store and carry. Dried vegetables can retain the nutrients in vegetables to the maximum extent, such as a variety of vitamins and minerals, to provide nutrition for the human body, especially in some pre-packaged foods, vegetables need to be dried to extend the storage time of vegetables.

[0003] At present, vegetables are generally dried in a dryer, using hot air to fully contact the vegetables to remove moisture from the vegetables and dry the vegetables. However, different parts of vegetables have different internal moisture contents. If they are dried in the same way in the dryer, the degree of drying of the vegetables will be different. Over-drying of vegetables may cause the surface of the vegetables to be burnt or the taste to be poor, while insufficient drying may cause the vegetables to mold or ferment during storage. Therefore, it is particularly important to adopt appropriate drying measures for vegetables in a targeted manner to ensure that the vegetables achieve an appropriate drying effect. Summary of the invention

[0004] The present invention provides a vegetable drying device, comprising:

[0005] A machine body, wherein the machine body is provided with more than two drying chambers;

[0006] A drying drum, arranged in the drying bin, and the first dryer or the second dryer is installed in the drying drum;

[0007] A hot air blower, arranged on the machine body and used to introduce hot air flow into the first dryer and the second dryer;

[0008] Wherein, a plurality of coaxially distributed wire mesh rings are installed in the first dryer, each wire mesh ring has a cavity for accommodating vegetables, and the vegetables are fixed in the cavity without overlapping and contacted with the hot air flow introduced into the first dryer by the hot air blower for drying;

[0009] The second dryer includes at least a first insulation cylinder and a first wire mesh cylinder rotatably installed on the inner side of the first insulation cylinder. The inner side of the first wire mesh cylinder has a drying chamber for accommodating vegetables. The vegetables in the drying chamber are stirred by the rotatable first wire mesh cylinder and are dried in contact with the hot air flow introduced into the second dryer by the hot air blower.

[0010] Preferably, the first drying device comprises:

[0011] The air distribution plate is constructed in a disc shape;

[0012] A plurality of air guide tubes are coaxially fixed on a single side of the air distribution plate;

[0013] Among them, the air distribution plate is provided with an air distribution cavity connected to the output end of the hot air blower, and each of the air guide tubes is provided with an air guide cavity connected to the air distribution cavity. The wire mesh ring is installed between any two adjacent air guide tubes, and the air guide tube is provided with a plurality of holes connected to the air guide cavity for evenly guiding the hot air to the inner and outer surfaces of the wire mesh ring.

[0014] Preferably, the second drying device further comprises a second heat preservation cylinder arranged inside the first screen cylinder and a second screen cylinder rotatably mounted inside the second heat preservation cylinder, and the mesh aperture of the second screen cylinder is larger than the mesh aperture of the first screen cylinder;

[0015] The second heat-insulating cylinder comprises a first cylinder wall and a second cylinder wall which are coaxially arranged inside and outside, a temporary storage cavity is provided between the first cylinder wall and the second cylinder wall, a discharge window which connects the temporary storage cavity with a drying cavity is provided at the bottom of the first cylinder wall, a valve is installed at the bottom of the second cylinder wall, and the valve is configured to discharge the material in the temporary storage cavity into the first wire mesh cylinder when in an open state.

[0016] Preferably, a door is hingedly installed on the front side of the drying bin, and when the door is closed, the drying bin is in a sealed state;

[0017] The door comprises a first door disposed at the front side of the first dryer and a second door disposed at the front side of the second dryer;

[0018] A first drying bin is formed between the first heat-insulating cylinder, the second heat-insulating cylinder and the second bin door, and a second drying bin is formed between the second heat-insulating cylinder and the second bin door. The temperature of the first drying bin is lower than that of the second drying bin.

[0019] Preferably, a first exhaust pipe for discharging the internal airflow of the first dryer is fixedly provided on the first compartment door, a second exhaust pipe for discharging the internal airflow of the second drying compartment is fixedly provided on the second compartment door, and a circulating air inlet pipe connected with the first drying compartment is fixedly provided on the second compartment door, and the output ends of the first exhaust pipe and the second exhaust pipe are both connected to the dehumidifier and then connected to the circulating air inlet pipe.

[0020] Preferably, a proportional valve is provided at the connection between the output end of the hot air blower and the second dryer, and the output end of the dehumidifier is connected to the proportional valve. The proportional valve is configured to control the air flow ratio of the hot air blower and the dehumidifier entering the second dryer to adjust the air flow temperature entering the second dryer.

[0021] Preferably, the wire mesh ring includes a plurality of wire mesh arc sleeves which are centrally symmetrically distributed, and a positioning shaft is fixed between any two adjacent wire mesh arc sleeves, and the positioning shaft is configured to be inserted and fixed into the first dryer parallel to the axis of the first dryer.

[0022] Preferably, the wire mesh arc sleeve includes two layers of parallel distributed wire mesh plates and an elastic connector for connecting the wire mesh plates and a positioning shaft, and the elastic connector connects the ends of the two wire mesh plates so that the two wire mesh plates have elastic potential energy to approach each other.

[0023] Preferably, the drying chamber includes a first drying cylinder for installing the first dryer and a second drying cylinder for installing the second dryer, the first drying cylinder is equipped with a first driver for driving the first dryer to rotate, and the second drying cylinder is equipped with a second driver for driving the first wire mesh cylinder to rotate.

[0024] Preferably, temperature and humidity sensors are installed in both the first dryer and the second dryer, and the temperature and humidity sensors are configured to be electrically connected to the hot air blower.

[0025] Compared with the prior art, the advantages of the present invention are:

[0026] The present invention provides a drying device including a first dryer and a second dryer, and classifies vegetables in advance according to their shapes, parts, volumes and weights after cutting. The two dryers respectively process vegetables of different shapes, so that the vegetables can be dried in a suitable manner. When drying vegetables with appearance requirements, the vegetable pieces can be kept in a better shape, and the drying efficiency and drying uniformity of the vegetables can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component shown in various figures may be represented by the same reference numeral. For clarity, not every component is labeled in every figure. Embodiments of various aspects of the present invention will now be described by way of example and with reference to the accompanying drawings, in which:

[0028] Figure 1 It is a three-dimensional structural schematic diagram of a vegetable drying device shown in an embodiment of the present invention;

[0029] Figure 2 is a front view structural schematic diagram of a vegetable drying device shown in an embodiment of the present invention;

[0030] Figure 3 It is a schematic diagram of the internal structure of a vegetable drying device shown in an embodiment of the present invention;

[0031] Figure 4 is a schematic cross-sectional structural diagram of a wire mesh ring shown in an embodiment of the present invention;

[0032] Figure 5 is a schematic diagram of a half-section structure of a first dryer shown in an embodiment of the present invention;

[0033] Figure 6 is a schematic diagram of the three-dimensional structure of the first dryer shown in an embodiment of the present invention;

[0034] 10. Machine body; 11. First drying cylinder; 12. First driver; 13. First door; 131. First exhaust pipe; 14. Second drying cylinder; 15. Second driver; 16. Second door; 161. Second exhaust pipe; 162. Circulation air intake pipe; 163. Waste discharge pipe; 20. Hot air blower; 21. First air supply pipe; 22. Second air supply pipe; 23. Proportional valve; 30. First dryer; 31. Air distribution plate; 310. Air distribution cavity; 311. Transmission Axis tube; 32, air guide tube; 320, air guide cavity; 40, second dryer; 400, drying cavity; 401, discharge window; 402, temporary storage cavity; 41, first insulation cylinder; 42, first wire mesh cylinder; 43, second insulation cylinder; 430, valve; 431, first cylinder wall; 432, second cylinder wall; 44, second wire mesh cylinder; 50, dehumidifier; 60, wire mesh ring; 61, wire mesh arc sleeve; 611, wire mesh plate; 612, elastic connector; 62, positioning shaft. DETAILED DESCRIPTION

[0035] In order to better understand the technical content of the present invention, specific embodiments are given and described as follows in conjunction with the accompanying drawings.

[0036] Due to the different moisture content in different parts of vegetables, even if the vegetables are cut into roughly similar structures during cutting, the drying speed of materials with different moisture contents at the same volume is still different during drying. In addition, due to the uneven shape and structure of vegetables, the thickness of the materials is different under the same cutting conditions, which will also affect the drying speed of the materials. Therefore, after cutting, on the basis of size screening, the vegetables need to be further screened according to weight, so as to carry out appropriate drying for vegetables of different sizes, different weights, same size but different weights, and same weight but different sizes, so as to ensure that the vegetables can achieve better taste and preservation conditions after drying.

[0037] Thus, the present invention provides a vegetable drying device, which aims to achieve suitable drying effects for a variety of vegetables, mainly for vegetables under different conditions, using appropriate drying methods to dry them. The device mainly includes a body 10, a drying drum, a hot air blower 20, a first dryer 30 and a second dryer 40.

[0038] Among them, there are more than two drying chambers in the machine body 10, each of which can be provided with a drying cylinder, and dryers for drying different materials can be installed in the drying cylinder, such as Figure 1 and Figure 2 As shown, the machine body 10 proposed in this embodiment is provided with a first drying drum 11 and a second drying drum 14 arranged up and down, the first dryer 30 is installed in the first drying drum 11 , and the second dryer 40 is installed in the second drying drum 14 .

[0039] Furthermore, the hot air blower 20 is arranged on the machine body 10 and is used to introduce hot air flow into the first dryer 30 and the second dryer 40. The hot air blower 20 adopts an industrial blower, equipped with a temperature controller and a flow controller, and can accurately output air flow and flow rate of set temperature.

[0040]

First Dryer

[0041] The first dryer 30 is configured to be suitable for drying materials with relatively large volume and high water content (such as the roots and stems of vegetables, radishes, cucumbers, vegetable cores, etc.). In some embodiments, a plurality of coaxially distributed wire mesh rings 60 are installed in the first dryer 30. The wire mesh ring 60 has a cavity for accommodating vegetables, and the vegetables are fixed in the cavity by being spread without overlapping, and are dried in contact with the hot air flow introduced into the first dryer 30 by the hot air blower 20.

[0042] In this way, the cut vegetables can be dried with hot air in a relatively fixed manner. Compared with stirring drying, static drying can allow the moisture inside the vegetables enough time to migrate outward and evaporate, thereby achieving a better drying effect, and can maintain the appearance to a large extent and avoid large deformation.

[0043] Among them, the first dryer 30 includes an air distribution plate 31 and a plurality of air guide tubes 32. The air distribution plate 31 is constructed in a disc shape. The plurality of air guide tubes 32 are coaxially fixed on a single side of the air distribution plate 31 to form a cylindrical structure with a single-side opening. The wire mesh ring 60 is installed between any two adjacent air guide tubes 32 from the opening direction.

[0044] Further, such as Figure 5 and Figure 6 As shown, the interior of the air distribution plate 31 is provided with an air distribution cavity 310 which is connected to the first air supply pipe 21 at the output end of the hot air blower 20. The air distribution cavity 310 is constructed in a disc shape and is relatively thin. Therefore, the hot air output by the hot air blower 20 is easily and evenly distributed to various places in the air distribution cavity 310. At the same time, the interior of each air guide tube 32 is provided with an air guide cavity 320 which is connected to the air distribution cavity 310. After the hot air is distributed in the air distribution cavity 310, it gradually flows into the air guide cavity 320, so that the hot air ring is on the inner and outer sides of the multiple wire mesh rings 60.

[0045] In a specific embodiment, a plurality of holes connected to the air guide cavity 320 are provided on the air guide tube 32, so that the hot air distributed in the air guide cavity 320 can be uniformly guided to the inner and outer surfaces of the wire mesh ring 60 through the evenly distributed holes. In this way, the hot air is blown from the inner and outer surfaces of the wire mesh ring 60 to the cut vegetable pieces, and the vegetable pieces are spread out in a single layer in the wire mesh ring 60, avoiding blind spots where the vegetable pieces come into contact with the hot air, thereby efficiently drying the vegetable pieces.

[0046] In order to make the water of the vegetable pieces in the wire mesh ring 60 flow evenly and avoid water accumulation, Figure 3 As shown, a first driver 12 for driving the first dryer 30 to rotate is installed on the first drying cylinder 11, and a transmission shaft tube 311 is provided in the middle position of the air distribution plate 31. The first driver 12 adopts a motor and a reduction gear set to drive the transmission shaft tube 311 to rotate, so that the first dryer 30 always maintains a low-speed rotation state during drying, wherein the first air supply pipe 21 is located on the inner side of the transmission shaft tube 311, and is connected to the air distribution plate 31 by a mechanical seal to ensure sealing in a rotatable state. In this case, it can be avoided that moisture in the vegetables accumulates somewhere, causing uneven drying.

[0047] In some embodiments, Figure 4 As shown, the wire mesh ring 60 includes a plurality of wire mesh arc sleeves 61 which are centrally symmetrically distributed. The curvature of the wire mesh arc sleeve 61 can be set below π / 6. A smaller curvature setting can prevent the materials in the wire mesh arc sleeve 61 from moving and overlapping with each other, which is beneficial to maintaining the shape of the material and allowing the material to fully contact with the hot air.

[0048] Furthermore, a positioning shaft 62 is fixed between any two adjacent wire mesh arc sleeves 61, and the positioning shaft 62 is configured to be inserted and fixed to the air distribution plate 31 parallel to the air guide tube 32, and multiple positioning shafts 62 are distributed on the circle between any two adjacent air guide tubes 32, wherein the air distribution plate 31 has reserved holes for the positioning shaft 62 to be inserted. During installation, it is necessary to first spread the load-bearing and screened vegetable blocks in the wire mesh arc sleeve 61, and then insert the positioning shaft 62 into the corresponding hole to complete the installation of the wire mesh ring 60 in the first dryer 30, and finally close the first bin door 13 on the front side of the first drying cylinder 11 to make the drying bin in a sealed state, and the vegetable blocks are fixed in the wire mesh ring 60 and dried by hot air following the rotating dryer 30.

[0049] In a specific embodiment, the wire mesh arc sleeve 61 includes two layers of parallel wire mesh plates 611 and an elastic connector 612 for connecting the wire mesh plates 611 and the positioning shaft 62, and the elastic connector 612 connects the ends of the two wire mesh plates 611 so that the two wire mesh plates 611 have elastic potential energy to approach each other, wherein the elastic connector 612 can be an elastic woven belt, woven and bound between the wire mesh plates 611 and the positioning shaft 62, so that the spacing between the two layers of wire mesh plates 611 can be flexibly adjusted. In this case, when the vegetable block loses internal moisture and its volume gradually decreases, the wire mesh plate 611 can continuously adhere to the surface of the vegetable block, keeping the structure of the vegetable block roughly regular, thereby achieving an aesthetically pleasing effect.

[0050] It should be understood that the machine body 10 can be equipped with a single or multiple first dryers 30 according to usage requirements. Hot air flow of different temperatures and speeds can be selectively introduced into each first dryer 30 to adapt to vegetables with different water contents and volumes. The first dryer 30 is suitable for vegetable blocks with relatively large volume, relatively high water content, and relatively regular and uniform shape, and can achieve the effects of efficient drying, uniform drying effect, and regular appearance.

[0051]

Second dryer

[0052] The second dryer 40 is configured to be suitable for drying small and irregularly shaped materials (leaf parts of vegetables, such as onions and vegetable leaves). The second dryer 40 includes at least a first heat-insulating cylinder 41 and a first wire mesh cylinder 42 rotatably installed on the inner side of the first heat-insulating cylinder 41. The inner side of the first wire mesh cylinder 42 has a drying chamber 400 for accommodating vegetables. The vegetables in the drying chamber 400 are stirred by the rotatable first wire mesh cylinder 42 and are dried in contact with the hot air flow introduced into the second dryer 40 by the hot air blower 20.

[0053] Among them, the output end of the hot air blower 20 is connected to the axial position of the first insulation cylinder 41 through the second air supply pipe 22, and penetrates the first insulation cylinder 41, and can blow hot air directly to the middle of the first insulation cylinder 41. Since the first wire mesh cylinder 42 is in continuous rotation, the vegetable material inside the first wire mesh cylinder 42 may follow the rotation and fall after rotating to a certain height. When falling, it can contact with the hot air blown out by the second air supply pipe 22 and be blown away by the hot air. Due to constant stirring, the effect of full contact with hot air and drying can be achieved. Compared with the drying method of the first dryer 30, it is suitable for drying materials that have no requirements on the appearance and will not change the shape.

[0054] Since the thickness of leaves in different parts of vegetables is different, the same cut leaves are generally dried together. However, due to the difference in leaf thickness, the thinner leaves will be over-dried. Figure 3As shown, the second dryer 40 also includes a second heat-insulating tube 43 arranged on the inner side of the first screen tube 42 and a second screen tube 44 rotatably installed on the inner side of the second heat-insulating tube 43, and the mesh aperture of the second screen tube 44 is larger than the mesh aperture of the first screen tube 42. In this way, thinner vegetable leaves will shrink and become smaller faster during drying, and after becoming smaller, they will fall into the first screen tube 42 through the holes of the second screen tube 44. The drying temperature in the first screen tube 42 is set lower than the temperature in the second screen tube 44, so that the vegetable leaves can be kept evenly dried.

[0055] Furthermore, the second insulation cylinder 43 includes a first cylinder wall 431 and a second cylinder wall 432 which are coaxially arranged inside and outside, and a temporary storage chamber 402 is provided between the first cylinder wall 431 and the second cylinder wall 432. A discharge window 401 which connects the temporary storage chamber 402 with the drying chamber 400 is provided at the bottom of the first cylinder wall 431, and a valve 430 is installed at the bottom of the second cylinder wall 432. The valve 430 is configured to discharge the material in the temporary storage chamber 402 into the first wire mesh cylinder 42 when it is in an open state.

[0056] Among them, the second dryer 40 is provided with a second compartment door 16 on the front side, and when the second compartment door 16 is closed, the second dryer 40 is in a sealed state, and a first drying compartment is formed between the first insulation cylinder 41, the second insulation cylinder 43 and the second compartment door 16, and a second drying compartment is formed between the second insulation cylinder 43 and the second compartment door 16. The temperature of the first drying compartment is set lower than the temperature of the second drying compartment. In this way, the vegetable leaves can be dried at a suitable temperature.

[0057] Furthermore, a second driver 15 for driving the first screen drum 42 to rotate is installed on the second drying drum 14. The second screen drum 44 is coaxially arranged with the first screen drum 42 and fixedly connected with the rotating drum. The first screen drum 42 and the second heat preservation drum 43 are partially rotatably connected with the rotating drum through bearings. The second driver 15 drives the rotating drum to rotate in the form of a motor and a reducer, thereby driving the first screen drum 42 and the second screen drum 44 to rotate synchronously. When working, all the vegetable leaves are put into the second screen drum 44 in advance. The second screen cylinder 44 rotates continuously to make the vegetable leaves contact with the hot air during the drying process. The thinner vegetable leaves shrink first and fall from the mesh holes of the second screen cylinder 44 through the discharge window 401 into the temporary storage chamber 402. The valve 430 can be opened manually or at a set interval to drop the material in the temporary storage chamber 402 into the second drying chamber formed between the second insulation cylinder 43 and the second chamber door 16, so that the thinner vegetable leaves can be dried at a relatively low temperature in the first drying chamber to avoid problems such as burning caused by over-drying.

[0058] like Figure 1 and Figure 3 As shown, in order to further improve the thermal efficiency of the hot air blower 20 and reduce the waste of thermal energy.

[0059] Among them, the first chamber door 13 is fixedly provided with a first exhaust pipe 131 for guiding the internal airflow of the first dryer 30, the second chamber door 16 is fixedly provided with a second exhaust pipe 161 for guiding the internal airflow of the second drying chamber, and the second chamber door 16 is fixedly provided with a circulating air inlet pipe 162 connected with the first drying chamber. The output ends of the first exhaust pipe 131 and the second exhaust pipe 161 are connected to the dehumidifier 50 and then connected with the circulating air inlet pipe 162. In this way, the airflow after heat exchange with the vegetable blocks in the first dryer 30 can be discharged from the first exhaust pipe 131, and the airflow after heat exchange with the vegetables in the second drying chamber can be discharged from the second exhaust pipe 161. After being dehumidified by the dehumidifier 50, it is transported to the first drying chamber to dry the thinner vegetable leaves at a lower temperature. A waste pipe 163 is also provided on the upper end of the second chamber door 16 corresponding to the first drying chamber for discharging waste gas.

[0060] Furthermore, since the drying temperature of vegetable leaves is lower than the drying temperature of vegetable blocks, a proportional valve 23 is provided at the connection between the output end of the hot air blower 20 and the second dryer 40, and the output end of the dehumidifier 50 is connected to the proportional valve 23. The proportional valve 23 is configured to control the air flow ratio of the hot air blower 20 and the dehumidifier 50 entering the second dryer 40, so as to adjust the air flow temperature entering the second dryer 40, and the low-temperature hot air after heat exchange can be further recycled.

[0061] In a preferred embodiment, temperature and humidity sensors are installed in the first dryer 30 and the second dryer 40. The temperature and humidity sensors are electrically connected to the hot air blower 20. The temperature and humidity sensors can detect the temperature of the airflow in the first dryer 30 and the second dryer 40 and the humidity in the bin in real time, and can roughly judge the progress of the vegetable drying. According to the temperature feedback, the output temperature of the hot air blower 20 can be adjusted to keep the vegetables dried at a suitable temperature.

[0062] In combination with the above embodiments, by setting up a drying device including a first dryer 30 and a second dryer 40, the vegetables are pre-differentiated according to their morphological parts and the volume and weight after cutting, so that the vegetables can be dried in a suitable manner and the vegetable pieces can be kept in a better shape, thereby improving the drying efficiency and drying uniformity of the vegetables.

[0063] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. A person with ordinary knowledge in the technical field to which the present invention belongs may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the definition of the claims.

Claims

1. A vegetable drying device, characterized in that: include: A machine body (10), wherein the machine body (10) is provided with more than two drying chambers; A drying cylinder, arranged in the drying chamber, and a first dryer (30) or a second dryer (40) is installed in the drying cylinder; a hot air blower (20), arranged on the machine body (10) and used to introduce hot air flow into the first dryer (30) and the second dryer (40); Wherein, a plurality of coaxially distributed wire mesh rings (60) are installed in the first dryer (30), the wire mesh rings (60) have cavities for accommodating vegetables, and the vegetables are fixed in the cavities without overlapping and are dried in contact with the hot air flow introduced into the first dryer (30) by the hot air blower (20); The second dryer (40) comprises at least a first heat-insulating cylinder (41) and a first wire mesh cylinder (42) rotatably mounted inside the first heat-insulating cylinder (41); the first wire mesh cylinder (42) has a drying chamber (400) inside for accommodating vegetables; the vegetables in the drying chamber (400) are stirred by the rotatable first wire mesh cylinder (42) and are dried in contact with the hot air flow introduced into the second dryer (40) by the hot air blower (20); The second drying device (40) further comprises a second heat-insulating cylinder (43) arranged inside the first wire mesh cylinder (42) and a second wire mesh cylinder (44) rotatably mounted inside the second heat-insulating cylinder (43), wherein the mesh aperture of the second wire mesh cylinder (44) is larger than the mesh aperture of the first wire mesh cylinder (42); The second heat-insulating cylinder (43) comprises a first cylinder wall (431) and a second cylinder wall (432) which are coaxially arranged inside and outside, a temporary storage chamber (402) is provided between the first cylinder wall (431) and the second cylinder wall (432), a discharge window (401) for connecting the temporary storage chamber (402) with a drying chamber (400) is provided at the bottom of the first cylinder wall (431), and a valve (430) is installed at the bottom of the second cylinder wall (432), and the valve (430) is configured to discharge the material in the temporary storage chamber (402) into the first wire mesh cylinder (42) when in an open state.

2. The vegetable drying device according to claim 1, characterized in that: The first drying device (30) comprises: The air distribution plate (31) is configured in a disc shape; A plurality of air guide tubes (32) coaxially fixed on a single side of the air distribution plate (31); The air distribution plate (31) is provided with an air distribution cavity (310) in communication with the output end of the hot air blower (20), each of the air guide tubes (32) is provided with an air guide cavity (320) in communication with the air distribution cavity (310), the wire mesh ring (60) is installed between any two adjacent air guide tubes (32), and the air guide tube (32) is provided with a plurality of holes in communication with the air guide cavity (320) for uniformly guiding hot air to the inner and outer surfaces of the wire mesh ring (60).

3. The vegetable drying device according to claim 1, characterized in that: A door is hingedly installed on the front side of the drying bin, and when the door is closed, the drying bin is in a sealed state; The door comprises a first door (13) arranged at the front side of the first dryer (30) and a second door (16) arranged at the front side of the second dryer (40); A first drying chamber is formed between the first heat-insulating cylinder (41), the second heat-insulating cylinder (43) and the second chamber door (16), and a second drying chamber is formed between the second heat-insulating cylinder (43) and the second chamber door (16), wherein the temperature of the first drying chamber is lower than the temperature of the second drying chamber.

4. The vegetable drying device according to claim 3, characterized in that: A first exhaust pipe (131) for discharging the internal airflow of the first dryer (30) is fixedly provided on the first chamber door (13), a second exhaust pipe (161) for discharging the internal airflow of the second drying chamber is fixedly provided on the second chamber door (16), and a circulating air intake pipe (162) in communication with the first drying chamber is fixedly provided on the second chamber door (16), and the output ends of the first exhaust pipe (131) and the second exhaust pipe (161) are both connected to the dehumidifier (50) and then communicated with the circulating air intake pipe (162).

5. The vegetable drying device according to claim 4, characterized in that: A proportional valve (23) is provided at the connection between the output end of the hot air blower (20) and the second dryer (40); the output end of the dehumidifier (50) is connected to the proportional valve (23); the proportional valve (23) is configured to control the air flow ratio of the hot air blower (20) and the dehumidifier (50) entering the second dryer (40), so as to adjust the air flow temperature entering the second dryer (40).

6. The vegetable drying device according to any one of claims 1 to 5, characterized in that: The wire mesh ring (60) comprises a plurality of wire mesh arc sleeves (61) distributed in a centrally symmetrical manner, and a positioning shaft (62) is fixed between any two adjacent wire mesh arc sleeves (61), and the positioning shaft (62) is arranged to be inserted and fixed in the first dryer (30) parallel to the axis of the first dryer (30).

7. The vegetable drying device according to claim 6, characterized in that: The wire mesh arc sleeve (61) comprises two layers of wire mesh plates (611) distributed in parallel and an elastic connecting piece (612) used to connect the wire mesh plates (611) and the positioning shaft (62), and the elastic connecting piece (612) connects the ends of the two wire mesh plates (611) so that the two wire mesh plates (611) have elastic potential energy to approach each other.

8. The vegetable drying device according to claim 1, characterized in that: The drying chamber comprises a first drying cylinder (11) for installing the first dryer (30) and a second drying cylinder (14) for installing the second dryer (40); the first drying cylinder (11) is provided with a first driver (12) for driving the first dryer (30) to rotate; the second drying cylinder (14) is provided with a second driver (15) for driving the first wire mesh cylinder (42) to rotate.

9. The vegetable drying device according to claim 1, characterized in that: Temperature and humidity sensors are installed in both the first dryer (30) and the second dryer (40), and the temperature and humidity sensors are arranged to be electrically connected to the hot air blower (20).

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