A nut drying device with real-time moisture content monitoring

Abstract

The present invention belongs to the field of food processing, and discloses a nut drying device with real-time moisture content monitoring, including a moisture content monitoring device and a drying box; the moisture content monitoring device is connected to the top of the drying box, a hot air channel is arranged inside the drying box, and a discharge port is opened at the bottom; the moisture content monitoring device includes a working box, a display panel and a working box blanking device; a test circuit integrated module is arranged on the side wall of the working box. The change of moisture content in the nut drying process is converted into a change of capacitance, so that the real-time monitoring of moisture content in the whole working process and the automatic control of nut blanking and discharging are realized, and the blanking and discharging process of the product changes in real time with the change of moisture content, which avoids the problem of large randomness of product quality of the existing drying device and greatly improves the yield rate.

Description

Technical Field

[0001] The invention belongs to the field of food processing and relates to a nut drying device capable of real-time monitoring of moisture content. Background Art

[0002] There are many kinds of nuts, and they are also widely used in daily life. A large part of them are used as snacks and become leisure food for everyone after dinner. In the existing nut production enterprises, the production process of nut snacks has a relatively fixed process. Take the most common sunflower seeds in daily life as an example. In the process of melon seeds processing, the raw sunflower seeds need to be air-selected and cleaned first, and then put into a cooking pot to cook and taste, and then the cooked melon seeds are put into a drying tower for high-temperature drying. After drying into melon seeds with a certain moisture content, the finished products are screened, and recently cooled and packaged to form the melon seeds we eat. The taste of melon seeds is closely related to the degree of drying of melon seeds, which is also the moisture content of the finished melon seeds. The production process of nuts has relatively stringent requirements on moisture. There must be an appropriate amount of moisture in the finished product to ensure that the melon seeds are tasty, crispy, and fragrant. If the finished melon seeds contain too much water, they will taste wet and not crisp, and the shelf life will be shortened and they will easily go moldy. On the contrary, if the finished melon seeds contain too little water, the melon seeds will not be full, but will be shriveled and hard, making them difficult to chew. The melon seed skins will easily fall into the mouth during consumption, and dust will easily form during storage and transportation, seriously affecting the taste. Therefore, the moisture content of nuts needs to be monitored in real time during nut production to ensure a good taste of the seeds.

[0003] The drying process of nuts is actually the process of reducing the moisture content of nuts. The nut drying process in the prior art usually indirectly controls the moisture content of the finished nuts by setting the drying time based on production experience. This method has many uncertainties. If the heating temperature does not reach the ideal temperature value within the set drying time, it will cause the moisture content in the nuts to be too high, reduce the taste of the nuts, and be unfavorable for the storage of the product; if the heating temperature is greater than the ideal temperature value, the nuts will be dry and hard, which will also have an adverse effect on the edible taste of the nuts; and in the process of drying nuts, the hot air flow is not constant, and these changes will cause the uncontrollable drying time of nuts. Similarly, ambient temperature is also an important factor affecting the nut drying process. The ambient temperature in production will also undergo some irregular changes over time, and it is difficult for us to use a constant drying time to consider the drying degree of nuts. In addition, changes in material spreading thickness, physical characteristics of nuts, and seasoning components will have an important impact on the drying process of nuts.

[0004] Therefore, it is unreasonable to indirectly control the moisture content by setting the drying time. This control method based on production experience has great limitations. First, this method is affected by many factors, the moisture content of the nuts produced is relatively random, the product quality is unstable, and the yield is low; secondly, since the setting of the drying time requires manual adjustment, it is not suitable for large-scale industrial production; finally, when the ambient temperature, material spreading thickness, physical characteristics of nuts, and seasoning components change, the setting of the drying time needs to be adjusted accordingly, which greatly increases the difficulty of production process control, is the determining factor of the unstable quality of nut processing, and is also a problem that the nut industry urgently needs to solve. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art that the degree of nut drying is difficult to control, the quality of nut drying is unstable, the yield is low, and the drying process is complicated, and to provide a nut drying device with real-time monitoring of moisture content.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A nut drying device with real-time moisture content monitoring comprises a drying box and a moisture content monitoring device; the moisture content monitoring device is connected to the top of the drying box, a hot air channel is arranged inside the drying box, and a discharge port is opened at the bottom; the moisture content monitoring device comprises a working box, a display panel and a working box blanking device; a test circuit integrated module is arranged on the side wall of the working box, the test circuit integrated module comprises a capacitor converter, an oscillator, a frequency discriminator and a sampling counter connected in sequence, and the sampling counter is connected to the display panel; two ceramic plates are arranged inside the working box, the two ceramic plates are respectively arranged on two symmetrical inner walls of the working box, and the two ceramic plates are connected to the capacitor converter; one end of the working box blanking device is connected to the side wall of the working box, and the other end extends into the working box and is located below the ceramic plates, and is used to open or close the bottom of the working box.

[0008] The present invention is further improved in that:

[0009] The test circuit integrated module also includes a limiting amplifier, and the oscillator is connected to the frequency discriminator via the limiting amplifier.

[0010] It also includes a single-chip microcomputer, one end of which is connected to the sampling counter, and the other end is connected to the working box blanking device. When the value sent by the sampling counter received by the single-chip microcomputer is less than the first preset value, the single-chip microcomputer closes the working box blanking device and the bottom of the working box is closed; when the value sent by the sampling counter received by the single-chip microcomputer is greater than the second preset value, the single-chip microcomputer opens the working box blanking device and the bottom of the working box is opened.

[0011] A silo is arranged at the top of the working box body, and the silo includes a storage box body and a silo blanking device; the storage box body is connected to the working box body, one end of the silo blanking device is connected to the side wall of the storage box body, and the other end extends into the interior of the storage box body, and the silo blanking device is used to block or connect the passage between the silo and the working box body.

[0012] The silo dropping device includes a silo cylinder, a silo connecting rod mechanism and a plurality of silo rotating baffles; the silo cylinder is fixedly arranged on the side wall of the storage box, and the telescopic end of the silo cylinder is connected to the silo connecting rod mechanism and the plurality of silo rotating baffles in sequence, and the plurality of silo rotating baffles are flat on the inner bottom of the storage box.

[0013] The display control system also includes an infrared counter-radiation sensor, which is connected to the inner wall of the working box and is located above the ceramic plate. The infrared counter-radiation sensor and the silo cylinder are both connected to the single-chip microcomputer; when the single-chip microcomputer receives a signal that the transmitting end and the receiving end of the infrared counter-radiation sensor are blocked, the single-chip microcomputer closes the silo cylinder, and the channel between the silo and the working box is blocked; otherwise, the single-chip microcomputer opens the silo cylinder after a preset time, and the channel between the silo and the working box is connected.

[0014] The working box blanking device includes a working box cylinder, a working box connecting rod mechanism and a plurality of working box rotating baffles; the working box cylinder is fixedly arranged on the side wall of the storage box, and the telescopic end of the working box cylinder is connected to the working box connecting rod mechanism and the plurality of working box rotating baffles in sequence, and the plurality of working box rotating baffles are flat on the inner bottom of the storage box and are all located below the ceramic plate.

[0015] The working box cylinder is connected to the single-chip microcomputer; when the value sent by the sampling counter received by the single-chip microcomputer is less than the first preset value, the single-chip microcomputer closes the working box cylinder and the bottom of the working box is closed; when the value sent by the sampling counter received by the single-chip microcomputer is greater than the second preset value, the single-chip microcomputer opens the working box cylinder and the bottom of the working box is opened.

[0016] A support frame is arranged outside the drying box body, and the single chip computer and the display panel are arranged in a control cabinet arranged on the outer surface of the support frame.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The nut drying device with real-time moisture content monitoring of the present invention allows heated air to enter the working box through the hot air channel of the drying box to dry the nuts inside. By setting a moisture content monitoring device at the top of the drying box, the moisture content of the nuts inside the device can be monitored in real time. When the moisture content detection meets the preset requirements, it means that the drying is completed and the nuts are discharged through the discharge port opened at the bottom of the drying box. The moisture content of the nuts is detected in real time during the nut drying process, and the falling and discharging processes of the nuts are controlled in real time, avoiding the defect of the prior art that the moisture content is controlled indirectly by controlling the discharge interval time, resulting in the actual moisture content of the finished product often deviating from the expected one, greatly improving the yield of nuts. This direct method of detecting the moisture content of nuts eliminates the need to consider other influencing factors during the nut drying process, greatly reducing the difficulty of processing and control, and ensuring the quality of the nut processing products. At the same time, the drying process is based on the detection results of the moisture content throughout the process, and no human intervention is required. The preheating link before the current drying equipment works can be omitted, and the discharge interval debugging process of the existing technology can be reduced, so as to improve the operability of the product equipment and facilitate large-scale production; the ceramic plate, the test circuit integrated module and the display control system module are integrated on a working box, which has a simple structure, is easy to install and disassemble, has high versatility, and can basically adapt to all existing drying equipment. At the same time, the moisture content monitoring device uses the principle that different water contents of the medium will lead to different corresponding dielectric constants, and different dielectric constants will cause linear changes in the dielectric capacitance. According to the change in capacitance, the amount of moisture content can be reflected. By setting two ceramic plates to detect the capacitance change in the internal space of the working box, and then converting the detected capacitance change into an intuitive digital signal through a capacitor converter, an oscillator, a frequency detector and a sampling counter in turn, and displaying it through a display panel, the staff can understand the current moisture content of the medium at any time, which is convenient and fast. At the same time, a working box blanking device is provided, through which the bottom of the working box is opened or closed, so that the moisture content of a large number of media can be continuously detected, which greatly shortens the detection time and improves the detection efficiency.

[0019] Furthermore, a limiting amplifier is provided to amplify the detected capacitance change signal, thereby improving the detection accuracy of the entire device.

[0020] Furthermore, a silo is arranged on the top of the working box body, and the silo includes a storage box body and a silo blanking device. The storage box body completes the storage function, and the silo blanking device is used to block or connect the passage between the silo and the working box body, so as to realize batch discharge and batch drying of nuts in the storage box body. Large quantities of nuts can be dried at one time, thereby improving the nut drying efficiency. The double-layer blanking device of the silo blanking device and the working box blanking device can ensure the stability and continuity of the entire drying process.

[0021] Furthermore, an infrared radiation sensor is provided to realize the automation of the silo dropping device, reduce the manual input, ensure the same amount of nuts dried each time, and ensure the drying quality.

[0022] Furthermore, the working box cylinder is connected to the single chip microcomputer to realize the automation of the working box cylinder, reduce labor input, and improve drying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the moisture content monitoring device of the present invention;

[0024] Figure 2 It is a schematic diagram of the test circuit integrated module structure of the moisture content monitoring device of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the display control system module of the moisture content monitoring device of the present invention;

[0026] Figure 4 It is a front view of the overall structure of the nut drying device of the present invention;

[0027] Figure 5 It is a rear view of the overall structure of the nut drying device of the present invention;

[0028] Figure 6 It is a schematic diagram of the silo structure of the nut drying device of the present invention;

[0029] Figure 7 It is a structural schematic diagram of a drying box of a nut drying device of the present invention;

[0030] Figure 8 It is a working flow chart of the nut drying device of the present invention;

[0031] Fig. 9 The figure is a control system flow chart of the nut drying device of the present invention.

[0032] Among them: 1- silo; 101- material storage box; 102- silo cylinder; 103- silo connecting rod mechanism; 104- silo rotating baffle; 2- working box; 201- ceramic plate; 202- infrared counter-radiation sensor; 203- cylinder; 204- connecting rod mechanism; 205- rotating baffle; 206- line pipeline; 3- drying box; 301- hot air pipeline; 302- material outlet; 4- support frame; 5- test circuit integrated module; 501- capacitor converter; 502- oscillator; 503- limiting amplifier; 504- frequency detector; 505- sampling counter; 6- control cabinet; 601- single chip microcomputer; 602- display panel. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0035] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0036] See also Figures 1 to 7 The nut drying device with real-time moisture content monitoring of the present invention comprises a silo 1, a moisture content monitoring device, a drying box 3 and a support frame 4. Among them, the moisture content monitoring device is a variable dielectric capacitive sensor device, which can detect the moisture content in the nuts in real time and control the discharging process of the finished product. A capacitive sensor is a sensor that converts the change of the measured non-electrical quantity into a capacitive change. The capacitance of the capacitive sensor changes with the change of the electrode spacing, the electrode area and the dielectric constant between the two electrodes. For the nut drying equipment, the cooked nuts are gradually dried to nuts with a certain moisture content. The dielectric constants corresponding to nuts with different moisture contents are different, and the dielectric constants change linearly with the moisture content of the nuts, thereby causing a linear change in the capacitance in the wet nuts.

[0037] The moisture content monitoring device includes a working box 2 and a working box blanking device. Two ceramic plates 201 for detecting moisture content, a test circuit integrated module 5 and a display control system module are arranged on the working box 2. The two ceramic plates 201 are symmetrically mounted on the inner wall of the working box 2, and the lower surface of the ceramic plates 201 is located above one end of the working box blanking device. The ceramic plates 201 are used to detect the change in capacitance of the internal space of the working box 2. In this embodiment, taking the moisture content detection of nuts as an example, the two ceramic plates 201 can convert the moisture content change in the nuts into the change in capacitance.

[0038] The working box blanking device includes a working box cylinder 203, a working box connecting rod mechanism 204 and a plurality of working box rotating baffles 205; the plurality of working box rotating baffles 205 are laid flat on the bottom of the working box 2, one end of the working box rotating baffle 205 is connected to the end of the working box connecting rod mechanism 204, the driving arm of the working box connecting rod mechanism 204 is connected to the telescopic end of the working box cylinder 203, and the working box cylinder 203 is installed on a support frame provided on the outer wall of the working box 2. The telescopic movement of the working box cylinder 102 is converted into the rotating opening and closing movement of the working box rotating baffle 104, when the working box cylinder 102 is extended, the working box rotating baffle 104 rotates to open, otherwise the working box rotating baffle 104 is closed; or when the working box cylinder 102 is extended, the working box rotating baffle 104 rotates to close, otherwise the working box rotating baffle 104 is opened, but it is not limited thereto.

[0039] The test circuit integrated module 5 is installed on the outer wall of the working box 2, and includes a capacitance converter 501, an oscillator 502, a limiting amplifier 503, a frequency discriminator 504 and a sampling counter 505 connected in sequence. The capacitance converter 501 adopts a general product, which is composed of a capacitor and an inductor and is connected to the ceramic plate 201 through a wire. The sampling counter 505 is connected to the display control system module. The test circuit integrated module 5 is used to convert the capacitance change into a digital signal output, wherein the capacitance converter 501 and the oscillator 502 are used to convert the capacitance change into a frequency change signal, the limiting amplifier 503 is used to amplify the converted frequency change signal to improve the measurement accuracy of the device, the frequency discriminator 504 is used to convert the frequency change signal into an amplitude change signal, and finally the sampling counter 505 is used to convert the amplitude change signal into a digital signal and output it to the display control system module.

[0040] The display control system module includes a single-chip microcomputer 601, a display panel 602 and an infrared counter-radiation sensor 202. The single-chip microcomputer 601 uses an 8051 single-chip microcomputer; the infrared counter-radiation sensor 202 is installed on the inner wall of the working box 2 and is located above the ceramic plate 201. The signal output end of the external counter-radiation sensor 202 is connected to the pin of the single-chip microcomputer 601 through a wire; the single-chip microcomputer 601 and the display panel 602 are installed in a control cabinet 6. The control cabinet 6 can be set on the outer surface of the working box 2 or on other supporting components. One pin of the single-chip microcomputer 601 is connected to the output end of the test circuit integrated module 5, that is, the output end of the sampling counter 505, through a wire. The infrared counter-radiation sensor 202 is used to detect the volume of nuts falling in the working box 2. The display panel 602 is connected to the output end of the sampling counter 505 to display the digital signal sent by the sampling counter 505.

[0041] The silo 1 is composed of an upper material storage box 101 and a lower material storage device, which includes a silo cylinder 102, a silo connecting rod mechanism 103 and a plurality of silo rotating baffles 104. The plurality of silo rotating baffles 104 are laid flat on the bottom of the material storage box 101, one end of the silo rotating baffle 104 is connected to the end of the silo connecting rod mechanism 103, the driving arm of the silo connecting rod mechanism 103 is connected to the telescopic end of the silo cylinder 102, and the silo cylinder 102 is installed on a support frame on the outer wall of the silo 1. The material storage box 101 is used to ensure that the heat is fully utilized while also ensuring the continuity of processing; the telescopic movement of the silo cylinder 102 is converted into a rotating opening and closing movement of the silo rotating baffle 104. When the silo cylinder 102 is extended, the silo rotating baffle 104 rotates to open, and vice versa, the silo rotating baffle 104 is closed; or when the silo cylinder 102 is extended, the silo rotating baffle 104 rotates to close, and vice versa, the silo rotating baffle 104 is opened, but not limited to this.

[0042] The silo dropping device is used to control the discharging process of the silo 1. The silo dropping device is used in conjunction with the infrared counter-radiation sensor 202 and the single-chip microcomputer 601. The single-chip microcomputer 601 is used to receive signals and control the dropping and discharging process of nuts. The display panel 602 displays the moisture content changes of the nuts inside the working box 2 in real time, and realizes automatic monitoring of the moisture content during the nut drying process, that is, according to the linear change process of the moisture content of the nuts during the drying process, the dropping of nuts and the finished product discharging process during drying are realized.

[0043] The upper surface of the working box 2 of the moisture content monitoring device is connected to the silo 1, and the lower surface is connected to the drying box 3, which is used to realize continuous feeding and discharging of nuts during the drying process. The drying box 3 realizes the functions of drying melon seeds and discharging finished products, and contains two parts: a hot air channel 301 and a discharge port 302. During operation, the fan blows the heated air into the drying box 3 through the air inlet of the hot air channel 301, and the hot air dries the nuts through the internal gap between the working box 2 and the silo 1; when the nuts meet the set moisture content, the drop mechanism of the working box 2 opens, and the nuts fall into the drying box 3 and are discharged through the discharge port 302 of the drying box.

[0044] The support frame 4 is used to support the entire device. The upper surface of the support frame 4 is connected to the two ears of the drying box body 3. The control cabinet 6 can also be fixedly set on the side wall of the support frame 4. The bottom of the support frame 4 is provided with a plurality of universal wheels for movement.

[0045] See also Figure 8 and 9 , the working process of the present invention is as follows:

[0046] When the nut drying device is working, the heated air enters the drying box 3, the working box 2 and the silo 1 through the hot air channel 301 of the drying box 3, and then the cooked nuts are placed in the silo 1, and then the process of drying the nuts and discharging the finished products begins.

[0047] The working box 2 starts to work. When there are no nuts inside the working box 2, the medium is air, and its corresponding dielectric constant is the smallest. When the single-chip computer 601 detects that the digital signal transmitted by the test circuit integrated module 5 is less than the first preset value, it outputs a control signal to the silo cylinder 102, controls the silo cylinder 102 to extend, and the silo connecting rod mechanism 103 drives the silo rotating baffle 104 to rotate and open. At this time, the working box blanking device is in a closed state, and the cooked nuts fall into the working box 2 through the silo 1.

[0048] When the volume of the fallen nuts reaches the upper surface of the ceramic plate 201, the nuts block the light propagation from the two poles of the infrared counter-radiation sensor 202 installed on the upper surface of the ceramic plate 201. The single-chip computer 601 collects the signal of the infrared counter-radiation sensor 202, outputs the control signal to the silo cylinder 102, controls the silo cylinder 102 to retract, and closes the silo dropping device. The dielectric constant of the nuts to be dried decreases linearly with the decrease of moisture content. When the cooked nuts just fall into the working box 2, the capacitance between the ceramic plates 201 is the largest, and the corresponding value is the largest; with the increase of drying time and drying degree, the moisture content of the nuts gradually decreases, and the capacitance between the two ceramic plates 102 gradually decreases, and the value of the digital signal sent by the sampling counter 505 also gradually decreases; when the digital signal transmitted by the test circuit integrated module 5 received by the single-chip microcomputer 601 is greater than the second preset value, the single-chip microcomputer 601 outputs a control signal to the working box cylinder 203, controls the working box cylinder 203 to extend, and the working box rotating baffle 205 rotates open, and the finished nuts are discharged.

[0049] When all the finished nuts in the working box 2 are discharged, the medium between the two ceramic plates 201 is air, and the capacitance between the two plates is minimum at this time. After the single-chip microcomputer 601 detects that the value is reset, that is, the single-chip microcomputer 601 detects that the digital signal transmitted by the test circuit integrated module 5 is the first preset value, and outputs a control signal to the working box cylinder 203 to control the working box cylinder 203 to retract, and the working box blanking device is closed. After the system has a preset time interval, which is 5 seconds in this embodiment, the single-chip microcomputer 601 outputs a control signal to the silo cylinder 102 to control the silo cylinder 102 to extend, and the silo blanking device is opened. The cooked nuts are dropped into the working box 2 through the silo blanking device, completing a working cycle.

[0050] The above process is repeated until all the cooked nuts in the silo 1 are put out and then refilled. During the drying process, the moisture content of the nuts in the working box 2 gradually decreases, resulting in a gradual decrease in the dielectric constant, which is manifested as a change in the value of the digital signal sent by the sampling counter 505 of the variable dielectric capacitor moisture content monitoring device, and is displayed in real time through the display panel 602 installed on the control cabinet 6.

[0051] The nut drying device with real-time moisture content monitoring of the present invention utilizes the change of capacitance during the nut drying process to realize the detection and control of the moisture content throughout the working process. The blanking and discharging process of the product changes in real time with the change of moisture content, avoiding the problem of large randomness of product quality in the prior art and greatly improving the yield rate. A double-layer blanking device is adopted, and the nut blanking and finished product discharging processes are both controlled by a single-chip microcomputer, which can ensure that the volume of the finished product discharged each time is the same. The drying process is automatically controlled throughout the entire process without the need for human intervention, and the preheating link before the current drying equipment works can be omitted. At the same time, the discharge interval debugging process of the prior art can be eliminated, thereby improving the operability of the product equipment and facilitating large-scale production. The ceramic plate 201, the test circuit integrated module 5 and the display control system module are integrated on a working box 2, and flanges are provided on the upper and lower surfaces of the working box 2. The structure is simple, easy to install and disassemble, and has high versatility, and can basically detect the moisture content of the finished products in all drying equipment.

[0052] The above contents are only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A nut drying device with real-time moisture content monitoring, characterized in that: It comprises a drying box (3) and a moisture content monitoring device; the moisture content monitoring device is connected to the top of the drying box (3); a hot air channel (301) is arranged inside the drying box (3), and a discharge port (302) is provided at the bottom; The moisture content monitoring device comprises a working box (2), a display panel (602) and a working box blanking device; a test circuit integrated module (5) is arranged on the side wall of the working box (2), the test circuit integrated module (5) comprises a capacitance converter (501), an oscillator (502), a frequency detector (504) and a sampling counter (505) connected in sequence, and the sampling counter (505) is connected to the display panel (602); two ceramic plates (201) are arranged inside the working box (2), the two ceramic plates (201) are respectively arranged on two symmetrical inner walls of the working box (2), and the two ceramic plates (201) are both connected to the capacitance converter (501); one end of the working box blanking device is connected to the side wall of the working box (2), and the other end extends into the working box (2) and is located below the ceramic plates (201), and is used to open or close the bottom of the working box (2); The test circuit integrated module (5) further comprises a limiting amplifier (503), and the oscillator (502) is connected to the frequency detector (504) via the limiting amplifier (503); It also includes a single chip microcomputer (601), one end of the single chip microcomputer (601) is connected to the sampling counter (505), and the other end is connected to the working box blanking device. When the value sent by the sampling counter (505) received by the single chip microcomputer (601) is less than a first preset value, the single chip microcomputer (601) turns off the working box blanking device, and the bottom of the working box (2) is closed; when the value sent by the sampling counter (505) received by the single chip microcomputer (601) is greater than a second preset value, the single chip microcomputer (601) turns on the working box blanking device, and the bottom of the working box (2) is opened. A material bin (1) is arranged at the top of the working box (2), and the material bin (1) comprises a material storage box (101) and a material bin blanking device; the material storage box (101) is connected to the working box (2), one end of the material bin blanking device is connected to the side wall of the material storage box (101), and the other end extends into the interior of the material storage box (101), and the material bin blanking device is used to block or connect the passage between the material bin (1) and the working box (2); It also includes an infrared counter-radiation sensor (202), which is connected to the inner wall of the working box (2) and is located above the ceramic plate (201), and the infrared counter-radiation sensor (202) and the silo cylinder (102) are both connected to the single-chip microcomputer (601); When the single chip computer (601) receives a signal that the transmitting end and the receiving end of the infrared counter-radiation sensor (202) are blocked, the single chip computer (601) closes the silo cylinder (102), and the passage between the silo (1) and the working box (2) is blocked; otherwise, the single chip computer (601) opens the silo cylinder (102) after a preset time, and the passage between the silo (1) and the working box (2) is connected; The working box blanking device comprises a working box cylinder (203), a working box connecting rod mechanism (204) and a plurality of working box rotating baffles (205); the working box cylinder (203) is fixedly arranged on the side wall of the material storage box (101); the telescopic end of the working box cylinder (203) is sequentially connected to the working box connecting rod mechanism (204) and the plurality of working box rotating baffles (205); the plurality of working box rotating baffles (205) are laid flat on the inner bottom of the material storage box (101) and are all located below the ceramic electrode plate (201); The working box cylinder (203) is connected to the single chip microcomputer (601); when the value sent by the sampling counter (505) received by the single chip microcomputer (601) is less than a first preset value, the single chip microcomputer (601) closes the working box cylinder (203), and the bottom of the working box (2) is closed; when the value sent by the sampling counter (505) received by the single chip microcomputer (601) is greater than a second preset value, the single chip microcomputer (601) opens the working box cylinder (203), and the bottom of the working box (2) is opened.

2. The nut drying device with real-time moisture content monitoring according to claim 1, characterized in that: The silo dropping device comprises a silo cylinder (102), a silo connecting rod mechanism (103) and a plurality of silo rotating baffles (104); the silo cylinder (102) is fixedly arranged on the side wall of the material storage box (101); the telescopic end of the silo cylinder (102) is connected to the silo connecting rod mechanism (103) and the plurality of silo rotating baffles (104) in sequence; and the plurality of silo rotating baffles (104) are laid flat on the inner bottom of the material storage box (101).

3. The nut drying device with real-time moisture content monitoring according to claim 1, characterized in that: A support frame (4) is arranged outside the drying box body (3), and the single chip computer (601) and the display panel (602) are both arranged in a control cabinet arranged on the outer surface of the support frame (4).

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