A corn cob drying device

Abstract

The utility model belongs to the field of agricultural product processing technology, concretely relates to a corn cob drying device, include: chain and board conveyer, chain and board conveyer includes chain and board, is equipped with a plurality of ventilation hole on chain and board, cover body, cover body installs above the chain and board of chain and board conveyer, cover body both ends are equipped with inlet and outlet respectively, hot -blast drying mechanism, hot -blast drying mechanism is installed below chain and board or the upper portion of cover body, and hot -blast drying mechanism can send hot blast to cover body. Compared with prior art, the utility model can dry a large amount of fresh corn cob at a time.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural product processing technology, and specifically relates to a corn cob drying device. Background Technology

[0002] Low-toxin corn refers to corn varieties whose main mycotoxin content is controlled below the safe threshold through variety selection, planting management and storage technology innovation. The core goal is to reduce the health risks of aflatoxin, zearalenone, vomitoxin and other to animals and humans.

[0003] According to relevant statistics, my country's corn production in 2024 was nearly 300 million tons, but the proportion of low-toxin corn was relatively low, especially in North China and South China. In these regions, corn can only be screened twice using color sorters and toxin sorters before being sent to feed companies, resulting in a large amount of grain being wasted.

[0004] The reasons for the low proportion of low-toxin corn are as follows: For many years, farmers have mostly piled up fresh corn cobs haphazardly or using simple tools, allowing them to dehydrate naturally before threshing. Because corn cobs themselves contain high sugar content and the piles of fresh corn cobs create a high-temperature, high-humidity environment, a significant proportion of the corn cobs already have dangerously high levels of aflatoxin, zearalenone, and vomitoxin during the piling process. Therefore, there is an urgent need to design a corn cob drying device capable of timely drying large quantities of fresh corn cobs. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a corn cob drying device to solve the technical problem that the prior art cannot dry a large number of fresh corn cobs in a timely manner.

[0006] To achieve the above objectives, this utility model provides a corn cob drying device, comprising:

[0007] A chain conveyor, comprising a chain plate, wherein the chain plate has a plurality of ventilation holes;

[0008] The cover is installed above the chain plate of the chain conveyor, and the two ends of the cover are respectively provided with an inlet and an outlet;

[0009] A hot air drying mechanism is installed below the chain plate or on the upper part of the cover, and the hot air drying mechanism can blow hot air into the cover.

[0010] Preferably, the hot air drying mechanism includes several hot air drying units, which are arranged in a matrix along the length of the chain plate.

[0011] Preferably, the hot air drying unit includes:

[0012] An air equalization chamber is provided with a heating element and several flow equalization pipes, wherein the heating element heats the air inside the air equalization chamber;

[0013] A fan is installed outside the air equalization chamber. The fan blows air into the air equalization chamber. The air blown into the air equalization chamber by the fan is heated by a heating element and then flows out evenly from several equalization pipes.

[0014] Preferably, the hot air drying mechanism is installed below the chain plate, the top of the cover is provided with several exhaust valves, the flow equalization pipe is installed at the top of the air equalization chamber, and the several exhaust valves are arranged at intervals along the length of the chain plate.

[0015] Preferably, the hot air drying mechanism is located on the upper part of the cover, the air distribution chamber is located on the inner side of the cover, and the air distribution pipe is located at the bottom end of the air distribution chamber.

[0016] Preferably, the corn cob drying device further includes a controller and multiple humidity detectors. The humidity detectors are communicatively connected to the controller and are installed inside the cover. The humidity detectors can detect the humidity of the corn cobs. Multiple humidity detectors are arranged at intervals along the length of the chain plate, and each humidity detector corresponds to a hot air drying unit.

[0017] Preferably, a photoelectric sensor is provided on the inner side of the cover near the discharge port, the chain conveyor includes a motor, the motor is driven by the chain, and the photoelectric sensor and the motor are respectively communicatively connected to the controller.

[0018] Preferably, the inlet and outlet of the cover are respectively provided with cover doors that can move up and down. The cover doors are driven by a drive unit, which is communicatively connected to the controller.

[0019] Preferably, the corn cob drying device further includes a temperature sensor and a wind pressure sensor, which are respectively connected to the controller. The temperature sensor is installed inside the hood and can detect the temperature of the drying area inside the hood. The fan and the heating element are respectively connected to the controller, and the wind pressure sensor can detect the air pressure of the fan.

[0020] Preferably, the fan is a high-pressure centrifugal fan, and the outlet pressure of the fan is 20 kPa to 40 kPa.

[0021] A batch of corn cobs is transported to the chain plate through the inlet. The chain plate moves forward to convey the corn cobs until the foremost corn cob reaches the vicinity of the outlet. The chain plate stops conveying, and the hot air drying mechanism blows hot air into the hood. The hot air comes into full contact with the corn cobs. After the corn cobs are dried for a certain period of time, the chain plate continues to convey the corn cobs forward. The dried corn is then discharged. Once the dried corn cobs have been discharged, the above process is repeated.

[0022] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0023] (1) The space between the cover and the chain plate can be used for drying operations, and the space can be set to a large length, so the present invention can dry a large amount of fresh corn cobs at one time;

[0024] (2) Under the conveying action of the chain plate, the next drying operation can be carried out quickly after one drying operation is completed, and the working efficiency is high.

[0025] (3) The hot air generated by the hot air drying mechanism blows into the hood, and the hot air can be blown directly onto the corn cob. Under the combined effect of the temperature and blowing force of the hot air, the drying effect is better, rather than generating hot air in the hood first and then sucking it away by the fan. The drying can only be done by the temperature of the hot air.

[0026] (4) When the hot air drying mechanism is installed on the upper part of the cover, the hot air will enter the inner side of the ring structure formed by the chain plate through the ventilation hole. Since the density of hot air is low, the hot air entering the inner side of the chain plate will rise and act on the part of the bottom of the corn cob that is not easily blown (the corn cob is usually placed horizontally on the chain plate inside the cover).

[0027] (5) When the hot air drying mechanism is installed below the chain plate, hot air will enter the hood through the ventilation holes to dry the corn cobs. At the same time, the corn cobs will be dried by heating the chain plate, rather than just by heating the chain plate.

[0028] (6) After drying the corn cobs, the moisture content of the corn cobs will decrease. After the moisture content of the corn cobs decreases, the kernel yield will be significantly increased. At the same time, the breakage rate is effectively reduced, and the best state and quality of the grain are maintained. After drying the corn cobs, the probability of the content of aflatoxin, zearalenone and vomitoxin exceeding the standard will be greatly reduced, and the proportion of low-toxin corn will be greatly increased.

[0029] (7) When feeding the corn cobs onto the chain plate through the feed inlet, the speed varies. The feeding speed of the chain plate can be adjusted to make the corn cobs evenly distributed or even placed in a single layer on the chain plate, which to a certain extent ensures the drying effect. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below:

[0031] Figure 1 This is a schematic diagram of the overall structure of an embodiment of a corn cob drying device according to the present invention;

[0032] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0033] Figure 3 This is a schematic diagram of the overall structure of another embodiment of the corn cob drying device of this utility model;

[0034] Figure 4 for Figure 3 A magnified view of a section at point B in the middle;

[0035] Figure 5 This is a structural diagram of the chain plate in a corn cob drying device according to the present invention;

[0036] Figure 6 for Figure 5 A magnified view of a portion of the image.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1. Chain conveyor; 11. Support frame; 12. Chain plate; 121. Ventilation hole; 2. Hot air drying mechanism; 21. Hot air drying unit; 211. Fan chamber; 2111. Air inlet; 212. Air distribution chamber; 2121. Flow distribution pipe; 2122. Heating element; 213. Fan; 2131. Air pressure sensor; 3. Cover; 31. Feed inlet; 32. Discharge outlet; 33. Photoelectric sensor; 34. Humidity detector; 35. Temperature sensor; 36. Exhaust valve. Detailed Implementation

[0039] The following is combined with Figures 1-6 The technical solutions in the embodiments of this application are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0040] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0041] Furthermore, the use of terms such as "first," "second," etc., in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0042] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or a communication connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0043] Furthermore, the technical solutions of the various embodiments of this application can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this application.

[0044] like Figures 1-6 As shown, this utility model provides a corn cob drying device, including: a chain conveyor 1, which includes a chain plate 12 and a support 11. The chain plate 12 is mounted on the support 11 and has a plurality of ventilation holes 121; a cover 3, which is mounted above the chain plate 12 of the chain conveyor 1, and has an inlet 31 and an outlet 32 ​​at both ends of the cover 3; and a hot air drying mechanism 2, which is mounted below the chain plate 12 or above the cover 3 and can blow hot air into the cover 3.

[0045] A batch of corn cobs is transported to the chain plate 12 through the feed port 31. The chain plate 12 conveys the corn cobs forward until the foremost corn cob reaches the vicinity of the discharge port 32. The chain plate 12 stops conveying, and the hot air drying mechanism 2 blows hot air into the hood 3. The hot air comes into full contact with the corn cobs. After the corn cobs are dried for a certain period of time, the chain plate 12 continues to convey the corn cobs forward. The dried corn is discharged. After the dried corn cobs are discharged, the above working process is repeated.

[0046] In the technical solution proposed in this application, the space between the cover 3 and the chain plate 12 can be used for drying operations, and this space can be set to a relatively large length. Therefore, this utility model can dry a large number of fresh corn cobs at one time. Under the conveying action of the chain plate 12, after one drying operation is completed, the next drying operation can be carried out quickly, resulting in high work efficiency. The hot air generated by the hot air drying mechanism 2 is blown into the cover 3, and the hot air can be blown directly onto the corn cobs. Under the dual action of the temperature and blowing force of the hot air, the drying effect is better, rather than generating hot air in the cover 3 first and then sucking it away by the fan 213, which only relies on the temperature of the hot air for drying. When the hot air drying mechanism 2 is installed on the upper part of the cover 3, the hot air will enter the inner side of the ring structure formed by the chain plate 12 through the ventilation hole 121. Due to the low density of hot air, the hot air entering the inner side of the chain plate 12 will rise and act on the bottom part of the corn cob that is not easily blown (the corn cob is usually inside the cover 3). (It is placed horizontally on the chain plate 12); when the hot air drying mechanism 2 is installed below the chain plate 12, hot air will enter the cover 3 through the ventilation hole 121 to dry the corn cobs. At the same time, the corn cobs will be dried by heating the chain plate 12, rather than just by heating the chain plate 12. After the corn cobs are dried, the moisture content of the corn cobs will be reduced. After the moisture content of the corn cobs is reduced, the kernel yield will be significantly improved after threshing. At the same time, the breakage rate will be effectively reduced, maintaining the best state and quality of the grain. After the corn cobs are dried, the probability of the content of aflatoxin, zearalenone, and vomitoxin exceeding the standard will be greatly reduced, and the proportion of low-toxin corn will be greatly increased. When feeding the chain plate 12 through the feed port 31, the speed is sometimes fast and sometimes slow. By adjusting the feeding speed of the chain plate 12, the thickness of the corn cobs can be made uniform or even placed in a single layer on the chain plate 12, which ensures the drying effect to a certain extent.

[0047] like Figure 1 and Figure 3 As shown, in order to ensure that the corn cobs on the chain plate 12 are heated evenly, as a preferred embodiment, a further improvement of this utility model is that the hot air drying mechanism 2 includes a plurality of hot air drying units 21, which are arranged in a matrix along the length of the chain plate 12.

[0048] Several hot air drying units 21 can be arranged in a single-row matrix or a multi-row matrix. In actual operation, the length of the hood 3 is usually between 30 and 100 meters. The two ends of the chain plate 12 extend from the inlet 31 and the outlet 32, respectively. Since a single hot air drying unit 21 cannot uniformly heat the interior of the hood 3 when the hood 3 is so long, multiple hot air drying units 21 arranged in a matrix need to operate simultaneously. The advantages of multiple hot air drying units 21 operating simultaneously are: it is convenient to increase the number of hot air drying units 21 according to actual needs; and it is convenient to maintain and replace individual hot air drying units 21.

[0049] like Figures 1-4 As shown, regarding the specific structure of the hot air drying unit 21, as a preferred embodiment, a further improvement of this utility model is that the hot air drying unit includes: an air equalization chamber 212, which is equipped with a heating element 2122 and several flow equalization pipes 2121, the heating element 2122 heating the air inside the air equalization chamber 212; and a fan 213, which is installed outside the air equalization chamber 212 and blows air into the air equalization chamber 212. The air blown into the air equalization chamber 212 by the fan 213 is heated by the heating element 2122 and then flows out evenly from the several flow equalization pipes 2121. The heating element 2122 is a disc-shaped heating tube.

[0050] The working principle of the hot air drying unit 21 is as follows: the fan 213 blows air into the air distribution chamber 212, the disc heating tube heats the air blown into the air distribution chamber 212, and the hot air flows out from several equalization pipes 2121. In order to make the hot air flow out from the several equalization pipes 2121 relatively evenly, the orifice size of the equalization pipes 2121 needs to be set reasonably. The orifice size of the equalization pipes 2121 closer to the fan 213 is small, and the orifice size of the equalization pipes 2121 farther from the fan 213 is large.

[0051] The hot air drying unit 21 also includes a fan chamber 211, a fan 213 is installed in the fan chamber 211, the fan chamber 211 is provided with an air inlet 2111, and a filter mechanism (not shown) is provided at the air inlet 2111. The filter mechanism is used to filter the air entering the fan chamber 211.

[0052] like Figure 1 and Figure 2 As shown, when the hot air drying mechanism 2 is installed below the chain plate 12, the top of the cover 3 is provided with several exhaust valves 36, the air distribution chamber 212 is located above the fan chamber 211, the flow distribution pipe 2121 is installed at the top of the air distribution chamber 212, and the several exhaust valves 36 are arranged at intervals along the length of the chain plate 12.

[0053] While the hot air blown out of the equalization pipe 2121 heats the chain plate 12, the hot air flows from the ventilation hole 121 to the top of the chain plate 12 to dry the corn cobs. During the drying process, the exhaust valve 36 is in the open state. The multiple open exhaust valves 36 can make the hot air flow evenly, further ensuring the drying effect of the corn cobs.

[0054] like Figure 3 and Figure 4 As shown, when the hot air drying mechanism 2 is located on the upper part of the cover 3, the fan chamber 211 is located on the top inner side of the cover 3, the air distribution chamber 212 is located on the inner side of the cover 3 and below the fan chamber 211, and the air distribution pipe 2121 is located at the bottom end of the air distribution chamber 212.

[0055] like Figure 1 and Figure 3 As shown, regarding how to detect the humidity of corn cobs, as a preferred embodiment, a further improvement of this utility model is that the corn cob drying device also includes a controller and multiple humidity detectors 34. The humidity detectors 34 are communicatively connected to the controller and are installed inside the cover 3. The humidity detectors 34 can detect the humidity of the corn cobs. Multiple humidity detectors 34 are arranged at intervals along the length direction of the chain plate 12, and each humidity detector 34 corresponds to a hot air drying unit 21.

[0056] The humidity detector 34 uses a near-infrared moisture meter. The core of the near-infrared moisture meter for measuring grain humidity is based on the absorption characteristics of water molecules to infrared light of a specific wavelength. Combined with multi-wavelength compensation technology to eliminate interference factors, the near-infrared moisture meter has the following advantages: the distance between the probe and the grain can reach about 350mm; millimeter-level response speed, the single measurement time is less than 1 second, and real-time feedback is supported; deep penetration ability, near-infrared light can penetrate several millimeters into the grain surface, reflecting the true internal moisture distribution.

[0057] When using the humidity detector 34, the probe of this utility model is aimed at the corn cob on the chain plate 12. The near-infrared moisture meter can detect the humidity of the corn kernels on the corn cob in real time. (After the corn cob is dried, the basis for judging whether it can be threshed is the humidity of the corn kernels on the corn cob. When the moisture content of the corn kernels on the corn cob is 20%-25%, it is most suitable for threshing. Therefore, it is only necessary to measure the humidity of the corn kernels on the corn cob.)

[0058] Before the drying operation, the humidity of the corn cobs is detected by a humidity detector 34. The humidity detector 34 transmits the measured humidity value to the controller, and the controller adjusts the heating temperature of the heating element 2122 according to the humidity value.

[0059] In practical use, the detection results of multiple humidity detectors 34 can be displayed on the same panel. Since there is a one-to-one correspondence between the humidity detectors 34 and the hot air drying units 21, when one or more of the humidity detectors 34 show abnormal results, the corresponding hot air drying unit 21 can be quickly repaired, improving work efficiency. The multiple humidity detectors 34 allow for individual detection of the drying effect of each hot air drying unit 21. All humidity detectors 34 transmit the detected humidity values ​​to the controller, which controls the air supply temperature and pressure of the corresponding hot air drying unit 21 based on the humidity value and its rate of change, resulting in more targeted operation.

[0060] like Figure 1 and Figure 3As shown, regarding how to make the chain plate 12 automatically stop forward conveying when the corn cob is conveyed to the vicinity of the discharge port 32, as a preferred embodiment, the further improvement of this utility model is that a photoelectric sensor 33 is provided on the inner side of the cover 3 near the discharge port 32, the chain plate conveyor 1 includes a motor, the motor is driven and connected to the chain plate 12, and the photoelectric sensor 33 and the motor are respectively connected to the controller for communication.

[0061] The photoelectric sensor 33 determines whether an object on the chain plate 12 has reached the target by detecting changes in the object's obstruction or reflection of the light path. This is common knowledge in the field, and its specific working structure and working principle will not be described in detail here.

[0062] When the photoelectric sensor 33 detects that the corn cob to be dried has reached the discharge port 32, the photoelectric sensor 33 transmits a signal to the controller, and the controller controls the motor to stop working, which improves the automation level of this utility model.

[0063] like Figure 1 and Figure 3 As shown, in order to have a relatively sealed drying environment, as a preferred embodiment, a further improvement of this utility model is that the inlet 31 and the outlet 32 ​​are respectively provided with a cover that can move up and down. The cover is driven by a drive component, which is communicatively connected to the controller. The drive component is an electric telescopic rod or a cylinder.

[0064] During the drying operation of corn cobs, the feed inlet 31 and the discharge outlet 32 ​​are closed by means of a cover under the drive of an electric telescopic rod or a cylinder. Before and after the drying operation, the cover at the feed inlet 31 and the discharge outlet 32 ​​are opened upwards under the drive of an electric telescopic rod or a cylinder, so as to prevent the presence of the cover from interfering with the conveying operation of the chain plate 12.

[0065] like Figure 1 and Figure 3 As shown, the corn cob drying device also includes a temperature sensor 35 and a wind pressure sensor 2131. The temperature sensor 35 and the wind pressure sensor 2131 are respectively connected to the controller. The temperature sensor 35 is installed inside the cover 3 and can detect the temperature of the drying area inside the cover 3. The fan 213 and the heating element 2122 are respectively connected to the controller. The wind pressure sensor 2131 can detect the air pressure of the fan 213.

[0066] Temperature sensor 35 monitors the temperature inside the enclosure 3 in real time. When temperature sensor 35 detects an abnormal (high) temperature inside the enclosure 3, temperature sensor 35 transmits a signal to the controller. After receiving the signal, the controller controls the heating element 2122 and the fan 213 to shut down in an emergency, ensuring safe production.

[0067] The blower 213 is a high-pressure centrifugal blower. After multiple experiments, the most suitable pressure range can be obtained. The outlet pressure of the blower 213 is 20kPa to 40kPa. Within this pressure range, the hot air blown by the blower 213 has the best penetration. By setting the wind pressure sensor 2131, it is possible to monitor in real time whether the pressure of the blower 213 is within this range.

[0068] The above description is only a preferred embodiment of this application and does not limit the patent scope of this application. All equivalent structural transformations made based on the contents of the specification and drawings of this application under the utility model concept of this application, or direct / indirect applications in other related technical fields, are included in the patent protection scope of this application.

Claims

1. A corn cob drying apparatus, characterized by, include: A chain conveyor (1) includes a chain plate (12) and a plurality of ventilation holes (121) are provided on the chain plate (12); Cover (3), the cover (3) is installed above the chain plate (12) of the chain plate conveyor (1), and the cover (3) has an inlet (31) and an outlet (32) at both ends; Hot air drying mechanism (2) is installed below the chain plate (12) or on the upper part of the cover (3). The hot air drying mechanism (2) can blow hot air into the cover (3).

2. The corn cob drying device according to claim 1, characterized in that, The hot air drying mechanism (2) includes several hot air drying units (21), which are arranged in a matrix along the length of the chain plate (12).

3. The corn cob drying device according to claim 2, characterized in that, The hot air drying unit (21) includes: An air equalization chamber (212) is provided with a heating element (2122) and several flow equalization pipes (2121), wherein the heating element (2122) heats the air in the air equalization chamber (212); A fan (213) is installed outside the air distribution chamber (212). The fan (213) blows air into the air distribution chamber (212). The air blown into the air distribution chamber (212) by the fan (213) is heated by the heating element (2122) and then flows out evenly from several flow distribution pipes (2121).

4. The corn cob drying device according to claim 3, characterized in that, The hot air drying mechanism (2) is installed below the chain plate (12), and the top of the cover (3) is provided with several exhaust valves (36). The flow equalization pipe (2121) is installed at the top of the air equalization chamber (212), and several exhaust valves (36) are arranged at intervals along the length direction of the chain plate (12).

5. The corn cob drying device according to claim 3, characterized in that, The hot air drying mechanism (2) is located on the upper part of the cover (3), the air distribution chamber (212) is located on the inner side of the cover (3), and the air distribution pipe (2121) is located at the bottom end of the air distribution chamber.

6. The corn cob drying device according to claim 3, characterized in that, The corn cob drying device also includes a controller and multiple humidity detectors (34). The humidity detectors (34) are connected to the controller and are installed inside the cover (3). The humidity detectors (34) can detect the humidity of the corn cobs. Multiple humidity detectors (34) are arranged at intervals along the length of the chain plate (12). Each humidity detector (34) corresponds to a hot air drying unit (21).

7. The corn cob drying device according to claim 6, characterized in that, A photoelectric sensor (33) is provided on the inner side of the cover (3) near the discharge port (32). The chain conveyor (1) includes a motor, which is driven by the chain plate (12). The photoelectric sensor (33) and the motor are respectively connected to the controller.

8. The corn cob drying device according to claim 7, characterized in that, The inlet (31) and outlet (32) of the cover (3) are respectively provided with cover doors that can move up and down. The cover doors are driven by a drive unit, which is connected to the controller in communication.

9. The corn cob drying device according to claim 6, characterized in that, The corn cob drying device also includes a temperature sensor (35) and a wind pressure sensor (2131). The temperature sensor (35) and the wind pressure sensor (2131) are respectively connected to the controller. The temperature sensor (35) is installed inside the cover (3). The temperature sensor (35) can detect the temperature of the drying area inside the cover (3). The fan (213) and the heating element (2122) are respectively connected to the controller. The wind pressure sensor (2131) can detect the air pressure of the fan (213).

10. The corn cob drying apparatus according to claim 9, characterized in that, The fan (213) is a high-pressure centrifugal fan, and the outlet pressure of the fan (213) is 20 kPa to 40 kPa.

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