Food moisture detection system
By designing a food moisture detection system including a drying box, positioning device and detection device, the problems of uneven drying of large-sized foods and difficulty in precise detection are solved, uniform drying of food and accurate internal moisture detection are achieved, and the improvement of the improvement of the problem of uniform drying of food and accurate drying of internal moisture is achieved. The detection accuracy and drying efficiency are achieved, and food rot and resource waste are avoided.
Patent Information
- Application Number
- CN202411325030.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2024-12-10
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When handling large-volume foods, the existing food moisture detection system has uneven drying, insufficient drying or over-drying problems, resulting in perishable foods, waste of resources and degradation of quality, and it is difficult to accurately detect the internal moisture of foods.
A food moisture detection system including a drying box, a positioning device and a detection device was designed to dry the food in the box with hot air, and achieve all-round uniform drying and accuracy of food through rotary positioning device and multiple moisture detection probes. Testing, combining electric infrared heating parts and automated control devices to ensure drying accuracy and efficiency.
It realizes uniform drying of large-volume foods and accurate detection of internal moisture, improves detection accuracy and drying efficiency, avoids food rot and resource waste, and ensures food quality.
Smart Images
Figure CN119104690A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of food processing, and in particular to a food moisture detection system. Background Art
[0002] Existing food moisture detection systems can usually only collect the moisture content of food from an overall level, such as using the weight difference before and after drying to judge the overall moisture evaporation of food on the stage. The test results obtained are usually macro-level data, which are suitable for particle-level food screening. However, this method has disadvantages when applied to large-volume food processing, because due to its large volume, problems such as insufficient drying and uneven drying may occur, causing the food to rot and mold in subsequent processing, transportation, and storage, resulting in serious property losses and waste of resources; if the purpose is to ensure that the moisture is completely evaporated, the problem of over-drying is likely to occur, which greatly reduces the quality of the food. Summary of the invention
[0003] In order to dry large-volume food, the present application provides a food moisture detection system.
[0004] The food moisture detection system provided in this application adopts the following technical solution: A food moisture detection system comprises a drying box, the drying box comprises a box body, a box cover is detachably connected to one side of the box body, a hot air inlet is provided at the bottom of the box body, a hot air outlet is provided at the top of the box body, and fans are provided at the hot air inlet and the hot air outlet; a positioning device, the positioning device comprises a positioning component for fixing food, and a first driving component for driving the positioning component to rotate around a horizontal axis; a detection device, the detection device comprises a plurality of moisture detection probes for detecting moisture in food, and a second driving component for driving the moisture detection probes to approach or move away from the positioning device.
[0005] By adopting the above technical scheme, hot air is blown into the box through the hot air inlet, the hot air is used to heat and dry the food at the positioning device, and the hot air outlet is used to discharge excess hot air in the box to maintain the pressure balance in the box. The moisture inside the food can be detected by the moisture detection probe to determine whether the food is completely dried. The positioning device is controlled to rotate the food according to the moisture inside the food so that the side with more moisture is close to the hot air inlet so that it can be dried evenly.
[0006] Optionally, the first driving component includes a first motor, the positioning component includes a positioning spike, the body of the first motor is arranged on a side of the box cover away from the box body, and the output shaft of the first motor is horizontally arranged and passes through the box cover to be driven and connected to the positioning spike.
[0007] By adopting the above technical solution, the first motor can be used to drive the positioning spike to rotate, so that the food to be tested can rotate at a uniform speed, which is convenient for drying moisture in all directions and at multiple angles.
[0008] Optionally, the positioning assembly further includes auxiliary thorns, which are arranged on both sides of the positioning thorns and are fixedly connected to the positioning thorns via connecting plates.
[0009] By adopting the above technical solution, the auxiliary thorns can assist the positioning thorns to more stably fix the food and prevent it from moving during the drying or testing process, thereby ensuring the detection accuracy and uniform drying.
[0010] Optionally, the detection device also includes a probe rack, which is arranged on a side of the box body away from the box cover along a horizontal direction perpendicular to the output shaft of the first motor, and the moisture detection probe is connected to a side of the probe rack close to the box body, and a pinhole is provided on the box body for the probe to pass through.
[0011] By adopting the above technical solution, the setting of the probe rack enables the moisture detection probe to move steadily and accurately, ensuring that the probe can accurately pierce the food for detection.
[0012] Optionally, a pressure sensor is provided between the moisture detection probe and the probe rack, and the pressure sensor is signal-connected to the moisture detection probe.
[0013] By adopting the above technical solution, the pressure sensor can provide real-time feedback on the force of the probe piercing the food, thereby excluding the data measured by the moisture detection probe that has not pierced the food.
[0014] Optionally, the second driving assembly includes a second motor, an active screw, a driven screw and a transmission rod, and screw holes matching the active screw and the driven screw are respectively provided at both ends of the probe frame, the active screw and the driven screw are rotatably connected to the probe frame, the second motor is arranged on one side of the box body that is adjacent to the hot air inlet and the hot air outlet, the output shaft of the second motor is drivingly connected to the active screw, and a screw frame is provided on the opposite side of the second motor, the driven screw can be rotatably connected to the screw frame around its own axis, and the transmission rod can be rotatably connected to the box body around its own axis, the transmission rod is connected to the active screw through a first bevel gear mechanism, and the transmission rod is connected to the driven screw through a second bevel gear mechanism, so that the active screw can drive the driven screw to rotate together through the guide screw.
[0015] By adopting the above technical solution, the second driving assembly can drive the probe frame to perform linear reciprocating motion in the horizontal direction, so that the probe can pierce and sample at a uniform speed, thereby realizing dynamic detection of food moisture.
[0016] Optionally, a control device is further included, and the control device is connected to the moisture detection probe, the first motor and the second motor signal.
[0017] By adopting the above technical solution, the control device can realize automatic control, and by receiving the signal from the moisture detection probe, the movement of the positioning device can be accurately controlled according to the signal, thereby further improving the drying accuracy.
[0018] Optionally, an electric infrared heating element is further provided in the box, and both the electric infrared heating element and the fan are connected to the control device by signal.
[0019] By adopting the above technical solution, the electric infrared heating element can penetrate into the surface of the heated material to a certain depth, while basically not heating the air and medium in the heating space, thereby specifically heating the places with high humidity to avoid over-drying of some places.
[0020] In summary, the present application includes at least one of the following beneficial technical effects: 1. This application provides a new method for detecting moisture in food, which not only overcomes the limitations of traditional macroscopic moisture detection methods, but also enables accurate spatial resolution detection of the internal moisture of food particles; 2. This application uses a positioning device to fix the food to be tested at a specific position during the detection process and drive it to rotate at a constant speed, which is convenient for drying the moisture in the food from multiple angles and in all directions, and then uses multiple moisture detection probes to more accurately detect the moisture content in the food, thereby improving the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 is a structural schematic diagram of a food moisture detection system provided in an embodiment of the present application; Figure 2 is an internal schematic diagram of a food moisture detection system provided in an embodiment of the present application; Figure 3 It is a schematic diagram of the structure of the box cover provided in an embodiment of the present application.
[0022] Explanation of the reference numerals: 1-box body; 101-pinhole; 102-insulation layer; 2-box cover; 201-limiting step; 3-hot air inlet; 4-hot air outlet; 5-fan; 6-moisture detection probe; 7-first motor; 8-positioning thorn; 9-auxiliary thorn; 10-connecting plate; 11-probe holder; 12-pressure sensor; 13-second motor; 14-driving screw; 15-driven screw; 16-transmission rod; 17-screw holder; 18-rod holder; 19-first driving bevel gear; 20-first driven bevel gear; 21-second driving bevel gear; 22-second driven bevel gear; 23-electric infrared heating element. DETAILED DESCRIPTION
[0023] The following is combined with Figure 1-3 This application is described in further detail.
[0024] The embodiment of the present application discloses a food moisture detection system.
[0025] like Figure 1 and Figure 2 As shown, the food moisture detection system includes a drying box, a positioning device and a detection device. The drying box includes a box body 1, and a box cover 2 is detachably connected to one side of the box body 1. The detachable connection method can be a screw or a positioning pin. In this embodiment, a positioning limit step 201 is provided on the side of the box cover 2 close to the box body 1. The detachable connection between the box cover 2 and the box body 1 is achieved by inserting the limit step 201 into the box body 1. The material of the limit step 201 can be a high-temperature resistant epoxy resin. A hot air inlet 3 is provided at the bottom of the box body 1, and a hot air outlet 4 is provided at the top of the box body 1. A fan 5 is provided at the hot air inlet 3 and the hot air outlet 4, so that the hot air can flow through the food evenly and effectively perform the drying operation. The hot air inlet 3 is used to be connected to the heat exchange air inlet pipe, the heat exchange air inlet pipe is connected to the heat source, and the hot air outlet 4 is connected to the heat exchange air outlet pipe. The heat exchange air inlet pipe, the heat exchange air outlet pipe and the heat source together constitute the heat exchange circulation system in the factory, which will not be described in detail in this application. The positioning device includes a positioning assembly for fixing food, and a first driving assembly for driving the positioning assembly to rotate around a horizontal axis. The detection device includes a plurality of moisture detection probes 6 for detecting moisture in food, and a second driving assembly for driving the moisture detection probes 6 to approach or move away from the positioning device.
[0026] Hot air is blown into the box body 1 by the hot air inlet 3, and the food at the positioning device is heated and dried by the hot air, and the excess hot air in the box body 1 is discharged by the hot air outlet 4 to keep the pressure balance in the box body 1. The moisture inside the food can be detected by the moisture detection probe 6 to determine whether the food is completely dried. The positioning device is controlled to rotate the food according to the moisture inside the food so that the side with more moisture is close to the hot air inlet 3 so that it can be dried evenly.
[0027] like Figure 3 As shown, specifically, the first driving component includes a first motor 7, and the positioning component includes a positioning spike 8 and an auxiliary spike 9. The main body of the first motor 7 is arranged on the side of the box cover 2 away from the box body 1. The output shaft of the first motor 7 is horizontally arranged and passes through the box cover 2 to be driven and connected to the positioning spike 8. The auxiliary spike 9 is arranged on both sides of the positioning spike 8 and is fixedly connected to the positioning spike 8 through a connecting plate 10.
[0028] The first motor 7 drives the positioning spike 8 to rotate, so that the food to be detected can rotate at a uniform speed, which is convenient for multi-angle and all-round drying of moisture. The auxiliary spike 9 can help the positioning spike 8 to more stably fix the food to prevent it from moving during rotation, thereby ensuring detection accuracy and uniform drying.
[0029] like Figure 1 and Figure 2 As shown, specifically, the detection device further includes a probe rack 11, which is arranged on a side of the box body 1 away from the box cover 2 in a horizontal direction perpendicular to the output shaft of the first motor 7, and the moisture detection probe 6 is connected to a side of the probe rack 11 close to the box body 1. The box body 1 is provided with a pinhole 101 for the probe to pass through, and a sealing ring can be provided at the pinhole 101. The moisture detection probe 6 is parallel to the positioning thorn 8, and there is a gap between the plurality of moisture detection probes 6 for avoiding the positioning thorn 8 and the auxiliary thorn 9.
[0030] In order to avoid detecting useless data, a pressure sensor 12 is provided between the moisture detection probe 6 and the probe frame 11. The pressure sensor 12 corresponds to the moisture detection probe 6 one by one, and the pressure sensor 12 is signal-connected to the corresponding moisture detection probe 6. The pressure sensor 12 can provide real-time feedback on the force of the probe piercing the food, so as to exclude the data measured by the moisture detection probe 6 that has not penetrated the food.
[0031] like Figure 1 and Figure 2 As shown, the second drive assembly includes a second motor 13, an active lead screw 14, a driven lead screw 15 and a transmission rod 16. The two ends of the probe frame 11 are respectively provided with screw holes that match the active lead screw 14 and the driven lead screw 15, and the active lead screw 14 and the driven lead screw 15 are rotatably connected to the probe frame 11. The active lead screw 14 is arranged parallel to the positioning thorn 8, and the second motor 13 is arranged on one side of the box body 1 that is adjacent to the hot air inlet 3 and the hot air outlet 4 at the same time, and the output shaft of the second motor 13 is drivingly connected to the active lead screw 14. A lead screw frame 17 is provided on the opposite side of the second motor 13, and the driven lead screw 15 is parallel to the active lead screw 14 and is connected to the lead screw frame 17 so as to be rotatable around its own axis. The transmission rod 16 is rotatably connected to the box body 1 through the rod frame 18. The first driven bevel gear 20 and the second driving bevel gear 21 are respectively provided at both ends of the transmission rod 16. The first driving bevel gear 19 is provided at one end of the driving screw 14 close to the transmission rod 16. The first driving bevel gear 19 and the first driven bevel gear 20 are meshed with each other and together constitute a first bevel gear mechanism. The second driven bevel gear 22 is provided at one end of the driven screw 15 close to the transmission rod 16. The second driving bevel gear 21 and the second driven bevel gear 22 are meshed with each other and together constitute a second bevel gear mechanism.
[0032] In actual use, the second motor 13 starts to drive the active screw 14 to rotate around its own axis, the first active bevel gear 19 rotates with the active screw 14, and under the meshing action of the first active bevel gear 19 and the first driven bevel gear 20, the transmission rod 16 rotates around its own axis, and the second active bevel gear 21 rotates with the transmission rod 16. Under the meshing action of the second active bevel gear 21 and the second driven bevel gear 22, the driven screw 15 rotates around its own axis. Under the joint action of the active screw 14 and the driven screw 15, the probe frame 11 reciprocates along the extension direction of the active screw 14 and the driven screw 15. Since the probe frame 11 can reciprocate along the extension direction of the active screw 14 and the driven screw 15, the probe frame 11 has a working position and a standby position. The working position is the position where the probe frame 11 is extremely close to the housing 1, and the standby position is the position where the probe frame 11 is extremely far from the housing 1. In the working position, the moisture detection probe 6 extends into the box 1 through the pinhole 101, and the end of the moisture detection probe 6 away from the probe frame 11 is located on the side of the connecting plate 10 close to the probe frame 11, and maintains a distance of at least 50 mm from the connecting plate 10, so as to prevent the connecting plate 10 heated by hot air from contacting the moisture detection probe 6, causing the high temperature of the connecting plate 10 to evaporate the moisture on the surface of the moisture detection probe 6, affecting the normal detection of the moisture detection probe 6. In the standby position, the moisture detection probe 6 at least partially extends into the box 1 through the pinhole 101, and the moisture detection probe 6 is in close contact with the sealing ring to achieve sealing of the box 1, and prevent the high-temperature gas in the box 1 from leaking from the pinhole 101, affecting the drying effect.
[0033] Since the temperature inside the box 1 is relatively high due to the flow of hot air during actual use, in order to prevent the high temperature from affecting the service life of the first motor 7 and the second motor 13, the first motor 7 and the second motor 13 are both arranged outside the box 1, and an insulation layer 102 can be provided on the inner wall of the box 1.
[0034] like Figure 2 As shown, in order to improve the local heating performance, an electric infrared heating element 23 is also provided in the box 1. In this embodiment, the electric infrared heating element 23 adopts an infrared quartz tube element capable of linear irradiation. The electric infrared heating element 23 is arranged on both sides of the positioning thorn 8 in the horizontal direction and connected to the inner wall of the box 1. The electric infrared heating element 23 can penetrate a certain depth into the surface of the heated material, and basically does not heat the air and medium in the heating space, so as to perform local heating on the places with high humidity in a targeted manner. The angle of the food is adjusted by the positioning device so that the part with high humidity inside the food is located in the irradiation direction of the electric infrared heating element 23, so as to achieve local heating of the food, so as to avoid excessive drying of other parts.
[0035] In order to realize automatic control, a food moisture detection system of the embodiment of the present application may also include a control device, which may be a PLC controller or a single chip microcomputer. The control device is simultaneously connected to the first motor 7, the second motor 13, the electric infrared heating element 23, the fan 5 and the moisture detection probe 6. The control device can realize automatic control. On the one hand, it can record the time data set by the operator for timed drying. On the other hand, it can receive the signal of the moisture detection probe 6 and accurately control the movement of the positioning device according to the signal, thereby further improving the drying accuracy.
[0036] The implementation principle of a food moisture detection system in the present application embodiment is as follows: The food is fixed at the positioning assembly by the positioning spikes 8 and the auxiliary spikes 9, and then the limiting step 201 of the box cover 2 is inserted into the box body 1, and the drying time (determined by the pre-weighing result) is set by the control device.
[0037] Start the control device, which controls the first motor 7 and the two fans 5 to start simultaneously. The two fans 5 can make the hot air flow from bottom to top in the box 1 to dry the food. The first motor 7 runs at a uniform speed to make the food rotate around the positioning spikes 8 in the box 1 to achieve uniform drying.
[0038] After the preset drying time, the control device controls the two fans 5 to reduce power and stops the first motor 7. Then the second motor 13 is started, and the second motor 13 drives the probe frame 11 to move to the working position. At this time, the moisture detection probe 6 is inserted into the food for detection. When the pressure sensor 12 detects that the pressure has changed, it controls the corresponding moisture detection probe 6 to send the detected humidity data to the control device, and then the second motor 13 is started, and the second motor 13 drives the probe frame 11 to move to the standby position. At this time, the first motor 7 is started to drive the food to rotate 30° around the positioning thorn 8. After the food is rotated into place, the second motor 13 is started again, and the second motor 13 drives the probe frame 11 to move to the working position. In this way, the internal humidity of the food is detected by reciprocating 5 times (in some other embodiments, the angle can be changed, and the number of rotations can be changed according to the angle).
[0039] After completing the detection, the control device controls the first motor 7 to rotate so that the part with higher humidity inside the food is in the irradiation path of the electric infrared heating element 23, and then starts the electric infrared heating element 23. After a certain period of time (determined by the control device based on the humidity value measured by the moisture detection probe 6), the electric infrared heating element 23 stops working, and the control device controls the first motor 7 to rotate so that other parts of the food with higher humidity are in the irradiation path of the electric infrared heating element 23, and starts the electric infrared heating element 23 again, and repeats the above steps until all parts that do not meet the humidity standard are heated.
[0040] At this time, the control device controls the two fans 5 to increase the power, discharge the water vapor caused by infrared irradiation from the hot air outlet 4, and continue drying for a certain time (determined by the control device according to the humidity value measured by the moisture detection probe 6), and finally completes the drying step.
[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A food moisture detection system, It is characterized in that include: A drying box, the drying box comprising a box body (1), a box cover (2) being detachably connected to one side of the box body (1), a hot air inlet (3) being provided at the bottom of the box body (1), a hot air outlet (4) being provided at the top of the box body (1), and fans (5) being provided at both the hot air inlet (3) and the hot air outlet (4); A positioning device, the positioning device comprising a positioning component for fixing food, and a first driving component for driving the positioning component to rotate around a horizontal axis; A detection device, comprising a plurality of moisture detection probes (6) for detecting moisture in food, and a second driving component for driving the moisture detection probes (6) to move closer to or away from the positioning device.
2. The food moisture detection system according to claim 1, It is characterized in that The first driving component comprises a first motor (7), and the positioning component comprises a positioning spike (8). The body of the first motor (7) is arranged on a side of the box cover (2) away from the box body (1), and the output shaft of the first motor (7) is arranged horizontally and passes through the box cover (2) to be drivingly connected to the positioning spike (8).
3. The food moisture detection system according to claim 2, It is characterized in that The positioning assembly further comprises auxiliary thorns (9), which are arranged on both sides of the positioning thorns (8) and are fixedly connected to the positioning thorns (8) via connecting plates (10).
4. The food moisture detection system according to claim 3, It is characterized in that The detection device further comprises a probe rack (11), wherein the probe rack (11) is arranged on a side of the box body (1) away from the box cover (2) in a horizontal direction perpendicular to the output shaft of the first motor (7), and the moisture detection probe (6) is connected to a side of the probe rack (11) close to the box body (1), and a pinhole (101) is provided on the box body (1) for the probe to pass through.
5. The food moisture detection system according to claim 4, It is characterized in that A pressure sensor (12) is provided between the moisture detection probe (6) and the probe frame (11), and the pressure sensor (12) is signal-connected to the moisture detection probe (6).
6. The food moisture detection system according to claim 4, It is characterized in that The second driving assembly comprises a second motor (13), an active lead screw (14), a driven lead screw (15) and a transmission rod (16); screw holes matching the active lead screw (14) and the driven lead screw (15) are respectively provided at two ends of the probe frame (11); the active lead screw (14) and the driven lead screw (15) are rotationally connected to the probe frame (11); the second motor (13) is arranged on one side of the box body (1) adjacent to the hot air inlet (3) and the hot air outlet (4); the output shaft of the second motor (13) is connected to the active lead screw (1 4) driving connection, a screw frame (17) is provided on the opposite side of the second motor (13), the driven screw (15) is connected to the screw frame (17) so as to be rotatable around its own axis, the transmission rod (16) is connected to the housing (1) so as to be rotatable around its own axis, the transmission rod (16) is connected to the active screw (14) through a first bevel gear mechanism, and the transmission rod (16) is connected to the driven screw (15) through a second bevel gear mechanism, so that the active screw (14) can drive the driven screw (15) to rotate together through the guide screw.
7. The food moisture detection system according to claim 6, It is characterized in that It also comprises a control device, which is signal-connected to the moisture detection probe (6), the first motor (7) and the second motor (13).
8. The food moisture detection system according to claim 7, It is characterized in that An electric infrared heating element (23) is also provided in the box body (1), and both the electric infrared heating element (23) and the fan (5) are connected to the control device by signal.