A drying device and method for producing boehmite by a combined process

Abstract

The invention discloses a drying device and method for producing boehmite by a combined process, and relates to the technical field of boehmite drying. The drying device and method comprise a drying mechanism, wherein a transport mechanism is arranged inside the drying mechanism, a feeding mechanism is arranged at one end of the drying mechanism, a transfer mechanism is arranged at the other end of the drying mechanism, and a driving mechanism is arranged on the top of the drying mechanism; a two-way channel is formed by a gap between the drying mechanism and the transport mechanism and an inner cavity of the transport mechanism, and the boehmite is secondarily dried in the two-way channel; the invention ensures that the boehmite product can be automatically secondarily dried in the two-way channel, and the two-way channel uses the same set of drying systems, which greatly reduces the equipment cost of the drying device, and at the same time, the secondary drying can make secondary use of the same set of heat energy, thereby ensuring that the drying device can make full use of energy consumption and reducing the use cost of the drying device.

Description

Technical Field

[0001] The invention relates to the technical field of boehmite drying, and in particular to a drying device and method for producing boehmite by a combined process. Background Art

[0002] Existing drying devices for boehmite production, for example, a drying device and method for boehmite production disclosed in the patent with publication number CN116817562A, when the drying device for boehmite production dries the boehmite, the thermal energy medium in the drying device will be discharged to the external environment, resulting in extremely low thermal energy utilization rate of the drying device, which greatly increases the energy consumption of the drying device and greatly increases the drying cost of the boehmite. Summary of the invention

[0003] In order to overcome the above-mentioned technical problems, the purpose of the present invention is to provide a drying device and method for the production of boehmite by a combined process, so as to solve the problem in the prior art that when the drying device is drying boehmite, the thermal energy medium in the drying device will be discharged to the external environment, and the thermal energy utilization rate of the drying device is extremely low, resulting in a significant increase in the drying cost of the boehmite.

[0004] The purpose of the present invention can be achieved through the following technical solutions:

[0005] The first aspect of the present invention is to provide a drying device for producing boehmite by a combined process, comprising a drying mechanism, a transport mechanism being arranged inside the drying mechanism, a feeding mechanism being arranged at one end of the drying mechanism, a transfer mechanism being arranged at the other end of the drying mechanism, and a driving mechanism being arranged at the top of the drying mechanism; the gap between the drying mechanism and the transport mechanism and the inner cavity of the transport mechanism form a two-way channel, and the boehmite is secondary dried in the two-way channel.

[0006] As a further solution of the present invention: the drying mechanism comprises a drying cylinder, a drying chamber is provided inside the drying cylinder, an air inlet port and an air outlet port are connected to the side of the drying cylinder, and bearing seats are fixedly connected to both ends of the top surface of the drying cylinder.

[0007] As a further solution of the present invention: the feeding mechanism includes a feeding shell, one end of the feeding shell is connected to a driving motor by bolts, the output end of the driving motor is connected to a screw cylinder, the top of the feeding shell is connected to a feeding pipe and an air outlet pipe, a sealing ring is fixedly connected to the top of the inner cavity of the feeding shell, a discharge trough is provided at the bottom end of the inner cavity of the feeding shell, a discharge port is fixedly connected at the bottom of the feeding shell near the discharge trough, a dryer and a heater are installed between the air inlet port and the air outlet pipe, and the air outlet pipe, the dryer, the heater and the air inlet port are sequentially connected by pipes.

[0008] As a further solution of the present invention: the transfer mechanism includes a transfer shell, the center position of the inner cavity of the transfer shell is fixedly connected to the air intake pipe, the inner cavity of the transfer shell is provided with a transfer groove near the outer side of the air intake pipe, the bottom of the transfer groove is provided with a push groove, and a push plate is arranged inside the push groove.

[0009] As a further solution of the present invention: the driving mechanism includes a power motor, the bottom of the power motor is fixedly connected to a transmission box, a transmission rod is inserted into the transmission box, and both ends of the transmission rod are fixedly connected to transmission gears.

[0010] As a further solution of the present invention: the transport mechanism includes a transport roller, a transport cavity is opened inside the transport roller, an internal threaded ring is fixedly connected to the inside of the transport cavity, an external threaded ring is fixedly connected to the outer surface of the transport roller, both ends of the transport roller are fixedly connected to external gear rings, a connecting groove is opened inside the external gear ring, the bottom end of the transmission gear is meshed with the top of the external gear ring, the transfer groove is connected to the transport cavity, and the push groove is connected to the connecting groove.

[0011] The second aspect of the present invention is to provide a drying method for producing boehmite by a combined process, comprising the following steps:

[0012] S1: A control module and a sensor module are mounted on the drying mechanism, and the control module collects a set of historical training data in advance;

[0013] S2: Based on the historical training data set, the control module trains a machine learning model to predict the speed value of the transportation mechanism;

[0014] S3: The control module collects temperature data, flow data and humidity data of the drying device in real time through the sensor module;

[0015] S4: Based on the temperature data, flow data and humidity data of the drying device collected in real time, the speed value of the transport mechanism is predicted using a machine learning model;

[0016] S5: Based on the predicted rotation speed value of the transport mechanism, control the drying device to dry the boehmite.

[0017] As a further solution of the present invention: the historical training data set includes N groups of training data, N is a positive integer, each group of training data includes feature data and label data, wherein the feature data includes temperature data, flow data and humidity data;

[0018] The temperature data is the temperature value of the hot air entering the drying mechanism when collecting each set of training data;

[0019] The flow data is the flow value of hot air entering the drying mechanism when collecting each set of training data;

[0020] The humidity data is the humidity value and humidity change rate of the boehmite in the transport mechanism when collecting each set of training data;

[0021] The label data is the rotation speed value of the transport mechanism when each set of training data is collected.

[0022] As a further solution of the present invention: a humidity sensor is arranged in the bidirectional channel, the humidity sensor collects first humidity data and second humidity data in the bidirectional channel, and generates a humidity change rate of the boehmite based on the first humidity data and the second humidity data.

[0023] As a further solution of the present invention: the training method of the machine learning model is:

[0024] The feature data in the training data is converted into a feature vector. The feature vector is used as the input of the machine learning model. The speed value predicted by the machine learning model for the feature data is used as the output. The speed value in the label data corresponding to the feature data is used as the prediction target. The training target is to minimize the sum of all prediction accuracies. The calculation formula for prediction accuracy is ui=(si-mi) 2 , where ui is the prediction accuracy, si is the predicted speed value corresponding to the feature data in the i-th group of training data, and mi is the speed value in the label data in the i-th group of training data. The machine learning model is trained until the sum of the prediction accuracies reaches convergence and the training is stopped.

[0025] Beneficial effects of the present invention:

[0026] 1. In the present invention, the gap between the drying mechanism and the transport mechanism and the inner cavity of the transport mechanism form a two-way channel, and the boehmite product is secondary dried in the two-way channel, which can greatly improve the drying effect of the drying device on the boehmite product. The transfer mechanism is used to transfer the boehmite product in the two-way channel to ensure that the boehmite product can be automatically secondary dried in the two-way channel. The two-way channel uses the same set of drying systems, which greatly reduces the equipment cost of the drying device. At the same time, the secondary drying will reutilize the same set of heat energy, which ensures that the drying device can fully utilize energy consumption and reduce the use cost of the drying device.

[0027] 2. In the present invention, the cavity formed between the drying chamber and the transport mechanism is connected to the drying chamber, so the hot air in the air inlet port first dries the boehmite product in the cavity, and then is transported to the transport mechanism through the air inlet pipe. In this process, the hot air will circulate between the drying mechanism and the transport mechanism and will not be discharged into the external environment, thereby realizing the reuse of the hot air, greatly reducing the energy consumption of the drying device, and thus reducing the drying cost of the boehmite product.

[0028] 3. In the present invention, the transport roller will continuously roll the boehmite product during the rotation process, so that the drying of the boehmite product is more uniform, and the second channel is first input with heated hot air, so the hot air in the second channel can heat the side wall of the transport roller, so that the temperature of the side wall of the transport roller is high, which is beneficial to the uniform heating of the boehmite product in the transport cavity and improves the drying effect.

[0029] 4. In the present invention, the drying device is controlled by the rotation speed value predicted by the trained machine learning model, so that the rotation speed of the transport roller can be controlled in advance, so that the rotation speed of the transport roller is under precise control, thereby ensuring the uniformity and accuracy of the drying of the boehmite product. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention will be further described below in conjunction with the accompanying drawings:

[0031] Figure 1 It is a schematic structural diagram of a drying device for producing boehmite by a combined process according to the present invention;

[0032] Figure 2 This is a front view of a drying device for producing boehmite by a combined process according to the present invention;

[0033] Figure 3 It is a side view of the drying device for producing boehmite by the combined process of the present invention;

[0034] Figure 4 is a cross-sectional view of a drying device for producing boehmite by a combined process according to the present invention;

[0035] Figure 5 It is a structural schematic diagram of the drying mechanism in the present invention;

[0036] Figure 6 It is a structural schematic diagram of the feeding mechanism in the present invention;

[0037] Figure 7 It is a structural schematic diagram of the transfer mechanism in the present invention;

[0038] Figure 8 It is a structural schematic diagram of the driving mechanism in the present invention;

[0039] Fig. 9 It is a structural schematic diagram of the transportation mechanism in the present invention.

[0040] 1. Drying mechanism; 11. Drying cylinder; 12. Drying chamber; 13. Support seat; 14. Bearing seat; 15. Air inlet port; 16. Air outlet port; 2. Feeding mechanism; 21. Feeding shell; 22. Driving motor; 23. Screw cylinder; 24. Feeding pipe; 25. Air outlet pipe; 26. Sealing ring; 27. Discharging trough; 28. Discharging port; 3. Transfer mechanism; 31. Transfer shell; 32. Air inlet pipe; 33. Transfer trough; 34. Pushing trough; 35. Pushing plate; 4. Driving mechanism; 41. Power motor; 42. Transmission box; 43. Transmission rod; 44. Transmission gear; 5. Transport mechanism; 51. Transport roller; 52. Transport chamber; 53. Internal threaded ring; 54. External threaded ring; 55. External gear ring; 56. Connecting groove. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 are within the scope of protection of the present invention.

[0042] Example 1

[0043] like Figure 1 - Fig. 9 As shown, the present invention discloses a drying device for producing boehmite by a combined method, comprising a drying mechanism 1, a transport mechanism 5 is arranged inside the drying mechanism 1, a feeding mechanism 2 is arranged at one end of the drying mechanism 1, a transfer mechanism 3 is arranged at the other end of the drying mechanism 1, a driving mechanism 4 is arranged on the top of the drying mechanism 1, a gap between the drying mechanism 1 and the transport mechanism 5 and an inner cavity of the transport mechanism 5 form a bidirectional channel, and the boehmite is secondary dried in the bidirectional channel. It should be noted that the feeding mechanism 2 is used to transport the boehmite product to the inside of the transport mechanism 5, and the boehmite product is dried in the drying mechanism 1 and the transport mechanism 5. The gap between the drying mechanism 1 and the transport mechanism 5 and the inner cavity of the transport mechanism 5 form a two-way channel, and the boehmite product is secondary dried in the two-way channel, which can greatly improve the drying effect of the drying device on the boehmite product. The transfer mechanism 3 is used to transfer the boehmite product in the two-way channel, ensuring that the boehmite product can be automatically secondary dried in the two-way channel. The two-way channel uses the same set of drying systems, which greatly reduces the equipment cost of the drying device. At the same time, the secondary drying will reuse the same set of heat energy, which ensures that the drying device can make full use of energy consumption and reduce the use cost of the drying device.

[0044] like Figure 5As shown, the drying mechanism 1 includes a drying cylinder 11, a drying chamber 12 is opened inside the drying cylinder 11, an air inlet port 15 and an air outlet port 16 are connected to the side of the drying cylinder 11, bearing seats 14 are fixedly connected to the two ends of the top surface of the drying cylinder 11, and a support seat 13 is fixedly connected to the bottom surface of the drying cylinder 11. The support seat 13 is used to support the entire drying mechanism 1 to ensure that the drying mechanism 1 is in a stable state during operation. The air inlet port 15 is used to input hot air into the drying chamber 12, and the air outlet port 16 is used to output hot air from the drying chamber 12 to ensure that the hot air circulates in the drying chamber 12.

[0045] like Figure 5 and Figure 6 As shown, the feeding mechanism 2 includes a feeding shell 21, one end of the feeding shell 21 is connected to a driving motor 22 by bolts, the output end of the driving motor 22 is connected to a screw cylinder 23, a screw is installed inside the screw cylinder 23, the output shaft of the driving motor 22 is directly connected to the screw through a coupling, when the driving motor 22 is turned on, the driving motor 22 can directly drive the screw to rotate through the output shaft, the top of the feeding shell 21 is connected to a feeding pipe 24 and an exhaust pipe 25, the boehmite product can be put in through the feeding pipe 24, when the boehmite product is put in After entering the feed pipe 24, since the bottom end of the feed pipe 24 is connected to one end of the inner side of the screw cylinder 23, the boehmite product will directly fall into the screw cylinder 23, and the screw rotating inside the screw cylinder 23 can push the boehmite product, so that the boehmite product automatically moves in the screw cylinder 23, thereby realizing the automatic feeding of the boehmite product. The top of the inner cavity of the feed shell 21 is fixedly connected with a sealing ring 26, and the bottom of the inner cavity of the feed shell 21 is provided with a discharge groove 27, and the bottom of the feed shell 21 is fixed near the discharge groove 27. A discharge port 28 is connected, and a dryer and a heater are installed between the air inlet port 15 and the air outlet pipe 25. The air outlet pipe 25, the dryer and the heater, and the air inlet port 15 are connected in sequence through pipes. It should be noted that the types of the dryer and the heater are adaptively selected by those skilled in the art according to the specifications of the air inlet port 15 and the air outlet pipe 25. The main function of the dryer is to remove water vapor in the hot air, and the function of the heater is to increase the temperature of the hot air. It should also be noted that a fan is also required to be arranged in the heater to provide a power source for the flow of hot air between the air outlet pipe 25, the dryer, the heater and the air inlet port 15. When working, the air outlet pipe 25 transports the hot air with water vapor to the dryer, the dryer dries the hot air with water vapor to remove the water vapor therein, and then transports the hot air to the heater. The heater heats the hot air. After the hot air reaches the required temperature, the hot air is transported to the air inlet port 15 through a pipe, and the air inlet port 15 transports the hot air to the drying chamber 12 to dry the boehmite product therein.

[0046] like Figure 5 , Figure 6 and Figure 7 As shown, the transfer mechanism 3 includes a transfer shell 31, and an air inlet pipe 32 is fixedly connected to the center of the inner cavity of the transfer shell 31. A transfer groove 33 is provided at the outer side of the inner cavity of the transfer shell 31 near the air inlet pipe 32. A push groove 34 is provided at the bottom of the transfer groove 33, and a push plate 35 is provided inside the push groove 34. It should be noted that one end of the outer side of the air inlet pipe 32 is connected to the air outlet port 16, so that when the hot air flows in the drying chamber 12, it is transported to the air inlet pipe 32 through the air outlet port 16. The transfer shell 31 is installed with a hydraulic push rod or an electric push rod, and the output end of the hydraulic push rod or the electric push rod is directly connected to the push plate 35. When the boehmite product in the transfer groove 33 After entering the push groove 34, the hydraulic push rod or the electric push rod will automatically open, pushing the entered boehmite product into the cavity formed between the drying chamber 12 and the transportation mechanism 5, and performing secondary drying on the boehmite product. It should also be noted that the cavity is directly connected to the drying chamber 12, so the hot air in the air inlet port 15 first dries the boehmite product in the cavity, and then is transported to the transportation mechanism 5 by the air inlet pipe 32. In this process, the hot air will form a cycle between the drying mechanism 1 and the transportation mechanism 5 and will not be discharged into the external environment, thereby realizing the reuse of hot air, greatly reducing the energy consumption of the drying device, and thus reducing the drying cost of the boehmite product.

[0047] Example 2

[0048] like Figure 8 As shown, the driving mechanism 4 includes a power motor 41, a transmission box 42 is fixedly connected to the bottom of the power motor 41, a transmission rod 43 is inserted inside the transmission box 42, and transmission gears 44 are fixedly connected to both ends of the transmission rod 43. It should be noted that the transmission box 42 is a torque gear box, that is, the output shaft of the power motor 41 is connected to the input end of the transmission box 42, and the output end of the transmission box 42 is meshed with the side of the transmission rod 43, so that the transmission box 42 can convert the power of the power motor 41 into torque force and transmit it to the transmission rod 43, thereby driving the transmission rod 43 to rotate, and the rotating transmission rod 43 will also drive the transmission gears 44 at both ends to rotate synchronously.

[0049] like Figure 1 - Fig. 9As shown, the transport mechanism 5 includes a transport roller 51, a transport cavity 52 is provided inside the transport roller 51, an internal threaded ring 53 is fixedly connected inside the transport cavity 52, an external threaded ring 54 is fixedly connected to the outer surface of the transport roller 51, and an external gear ring 55 is fixedly connected to both ends of the transport roller 51. A connecting groove 56 is provided inside the external gear ring 55, the bottom end of the transmission gear 44 is meshed with the top of the external gear ring 55, the transfer groove 33 is connected to the transport cavity 52, and the push groove 34 is connected to the connecting groove 56. It should be noted that since the bottom end of the transmission gear 44 is meshed with the top of the external gear ring 55, the transmission groove 33 is connected to the transport cavity 52, and the push groove 34 is connected to the connecting groove 56. When the transmission gear 44 rotates, the rotating transmission gear 44 will drive the outer gear ring 55 to rotate, and the rotating outer gear ring 55 will drive the transport roller 51 to rotate. The gap between the drying mechanism 1 and the transport mechanism 5 and the inner cavity of the transport mechanism 5 form a two-way channel. Specifically, the transport cavity 52 forms a first channel, and the cavity between the drying cavity 12 and the transport roller 51 forms a second channel. The end of the screw cylinder 23 away from the drive motor 22 is input into the transport cavity 52. ​​When the boehmite product is placed in the feed pipe 24, the bottom end of the feed pipe 24 and the screw The inner end of the cylinder 23 is connected, so that the boehmite product will directly fall into the screw cylinder 23, and the screw rotating inside the screw cylinder 23 can push the boehmite product, so that the boehmite product automatically moves in the screw cylinder 23, and finally pushes the boehmite product into the transport cavity 52. ​​When the transport roller 51 rotates, the built-in threaded ring 53 inside the transport cavity 52 will push the boehmite product into the transport cavity 52, so that the boehmite product automatically moves in the transport cavity 52, and the inner end of the air inlet pipe 32 extends into the transport cavity 52, so that The air inlet duct 32 can input hot air from the other end of the transport chamber 52. The hot air contacts the boehmite product in the transport chamber 52 so that the hot air can dry the boehmite product. The transport roller 51 will continuously roll the boehmite product during the rotation, so that the drying of the boehmite product is more uniform. The second channel first inputs the heated hot air, so the hot air in the second channel can heat the side wall of the transport roller 51, so that the temperature of the side wall of the transport roller 51 is high, which is beneficial to the uniform heating of the boehmite product in the transport chamber 52 and improves the drying effect.

[0050] It should be noted that the end of the transport roller 51 close to the transfer mechanism 3 is in sealing contact with the transfer mechanism 3, and the transport cavity 52 and the transfer trough 33 fit together, so that the rotating transport cavity 52 cooperates with the built-in threaded ring 53 to continuously transport the boehmite product to the transfer trough 33, and the boehmite product entering the transfer trough 33 will also enter the second channel through the push groove 34 and the connecting groove 56, and the positions of the push groove 34 and the connecting groove 56 match.

[0051] Because the outer side of the transport roller 51 is fixedly connected with an external thread ring 54, the external thread ring 54 matches the cavity formed by the transport roller 51 and the drying chamber 12. When the transport roller 51 rotates, the transport roller 51 will also drive the external thread ring 54 on the outer side to rotate synchronously. It should be noted that the spiral direction of the external thread ring 54 is opposite to that of the internal thread ring 53. In this way, when the transport roller 51 rotates, the external thread ring 54 can transport the boehmite product in the opposite direction, so that the boehmite product moves in the second channel. There is also hot air flowing in the second channel, which can perform secondary drying on the boehmite product, greatly improving the drying effect of the boehmite product. The connecting groove 56 at one end of the transport roller 51 close to the feeding mechanism 2 matches the discharging groove 27, so that the second channel The boehmite product in the channel can enter the discharge trough 27 under the push of the external threaded ring 54. The sealing ring 26 arranged on the top of the discharge trough 27 can seal the upper half of the connecting groove 56 to prevent the hot air in the second channel from entering the first channel through the connecting groove 56. The air outlet pipe 25 is directly connected to the internal cavity of the feed shell 21 to ensure that the hot air in the transport cavity 52 can be output through the air outlet pipe 25. The boehmite product entering the discharge trough 27 will eventually be output from the discharge port 28, and the output from the discharge port 28 is the finally dried boehmite product. The position of the discharge trough 27 is close to that of the feed pipe 24, which is convenient for the subsequent transportation and processing of the dried boehmite product, and facilitates the transportation of the boehmite product.

[0052] Example 3

[0053] like Figure 1 - Fig. 9 As shown, the present invention discloses a drying method for the drying device in Example 1 and Example 2, which specifically includes the following steps:

[0054] S1: A control module and a sensor module are mounted on the drying mechanism 1, and the control module collects a set of historical training data in advance.

[0055] It should be noted that the historical training data set includes N groups of training data, where N is a positive integer. The number of training data collected is adaptively adjusted by those skilled in the art according to the training situation of the model. The training data is collected by those skilled in the art during the process of drying the boehmite product using the drying device. Those skilled in the art can appropriately modify relevant parameters to obtain different training data. Each group of training data includes feature data and label data, wherein the feature data includes temperature data, flow data and humidity data.

[0056] The temperature data is the temperature value of the hot air entering the drying mechanism 1 when each set of training data is collected. A person skilled in the art can install any number of temperature sensors at any position in the drying device 1 (a position where the temperature of the hot air can be collected), and then collect the temperature values ​​of all the temperature sensors, and calculate the average of the temperature values ​​of all the temperature sensors, and use it as the temperature value of the hot air in the drying mechanism 1. For example, a temperature sensor can be preferentially installed in the air inlet port 15, and the temperature value collected by the temperature sensor can be used as the temperature value of the hot air entering the drying mechanism 1, thereby reducing the cost of collecting the temperature value;

[0057] The flow data is the flow value of the hot air entering the drying mechanism 1 when each set of training data is collected. A person skilled in the art can install any number of flow sensors at any position in the drying device 1 (a position where the hot air flow can be collected), and then collect the flow values ​​of all flow sensors, calculate the average of the flow values ​​of all flow sensors, and use it as the flow value of the hot air in the drying mechanism 1. For example, a flow sensor can be preferentially installed in the air inlet port 15, and the flow value collected by the flow sensor can be used as the flow value of the hot air entering the drying mechanism 1, thereby reducing the collection cost of the flow value;

[0058] The humidity data is the humidity value and humidity change rate of the boehmite in the transport mechanism 5 when collecting each set of training data. A humidity sensor is set in the bidirectional channel. The humidity sensor collects the first humidity data and the second humidity data in the bidirectional channel, obtains the first humidity value and the second humidity value according to the first humidity data and the second humidity data, and generates the humidity change rate of the boehmite product based on the first humidity value and the second humidity value. It should be noted that the first humidity sensor can be installed at any position of the first channel to obtain the first humidity data, and then the second humidity sensor can be installed at the corresponding position of the second channel to obtain the second humidity data. A third humidity sensor can also be installed inside the discharge port 28. The third humidity sensor is used to ensure that the humidity value of the boehmite product is below the set value;

[0059] The label data is the rotation speed value of the transport mechanism 5, that is, the rotation speed value of the transport roller 51 when collecting each set of training data. When the rotation speed of the transport roller 51 is faster, the transport speed of the boehmite product in the first channel and the second channel is also faster, the drying time is correspondingly shorter, and the humidity value of the boehmite product decreases less. Conversely, when the rotation speed of the transport roller 51 is slower, the transport speed of the boehmite product in the first channel and the second channel is also slower, the drying time is correspondingly longer, and the humidity value of the boehmite product decreases more. Therefore, by accurately controlling the rotation speed value of the transport roller 51, the drying effect of the boehmite product can be controlled to ensure the uniformity and accuracy of the drying of the boehmite product.

[0060] S2: Based on the historical training data set, the control module trains a machine learning model for predicting the rotation speed value of the transportation mechanism 5.

[0061] The method for the control module to train a machine learning model for predicting the drying strategy of the drying device is:

[0062] The feature data in the training data is converted into a feature vector. The feature vector is used as the input of the machine learning model. The speed value predicted by the machine learning model for the feature data is used as the output. The speed value in the label data corresponding to the feature data is used as the prediction target. The training target is to minimize the sum of all prediction accuracies. The calculation formula for prediction accuracy is ui=(si-mi) 2 , where ui is the prediction accuracy, si is the predicted speed value corresponding to the feature data in the i-th group of training data, and mi is the speed value in the label data in the i-th group of training data. The machine learning model is trained until the sum of the prediction accuracies converges and the training is stopped. The convergence standard is set by those skilled in the art according to the specific model training situation. For example, ui is set to 0.001. When the error between the speed value predicted by the machine learning model for the feature data and the speed value in the label data corresponding to the feature data is less than or equal to 0.001, the machine learning model training is considered to be completed.

[0063] S3: The control module collects temperature data, flow data and humidity data of the drying device in real time through the sensor module.

[0064] S4: Based on the temperature data, flow data and humidity data of the drying device collected in real time, a machine learning model is used to predict the rotation speed value of the transport mechanism 5;

[0065] S5: Based on the predicted rotation speed value of the transport mechanism 5, the drying device is controlled to dry the boehmite product to ensure that the humidity value of the boehmite product is within a set range, while also ensuring the drying uniformity of the boehmite product.

[0066] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A drying device for producing boehmite by a combined process, characterized in that: include: A drying mechanism (1) having a transport mechanism (5) disposed therein; A feeding mechanism (2) disposed at one end of the drying mechanism (1); A transfer mechanism (3) disposed at the other end of the drying mechanism (1); A driving mechanism (4) disposed on the top of the drying mechanism (1); The gap between the drying mechanism (1) and the transport mechanism (5) and the inner cavity of the transport mechanism (5) form a bidirectional channel, and the boehmite is secondary dried in the bidirectional channel; The transfer mechanism (3) comprises a transfer shell (31), an air intake pipe (32) is fixedly connected to the center of the inner cavity of the transfer shell (31), a transfer groove (33) is provided at the outer side of the inner cavity of the transfer shell (31) close to the air intake pipe (32), a push groove (34) is provided at the bottom of the transfer groove (33), and a push plate (35) is provided inside the push groove (34); The driving mechanism (4) comprises a power motor (41), the bottom of the power motor (41) is fixedly connected to a transmission box (42), a transmission rod (43) is inserted into the transmission box (42), and both ends of the transmission rod (43) are fixedly connected to transmission gears (44); The transport mechanism (5) comprises a transport roller (51), a transport cavity (52) is provided inside the transport roller (51), an internal threaded ring (53) is fixedly connected inside the transport cavity (52), an external threaded ring (54) is fixedly connected to the outer surface of the transport roller (51), both ends of the transport roller (51) are fixedly connected to external gear rings (55), a connecting groove (56) is provided inside the external gear ring (55), the bottom end of the transmission gear (44) is meshed with the top of the external gear ring (55), the transfer groove (33) is connected to the transport cavity (52), and the push groove (34) is connected to the connecting groove (56).

2. A drying device for producing boehmite by a combined process according to claim 1, characterized in that: The drying mechanism (1) comprises a drying cylinder (11), a drying chamber (12) is provided inside the drying cylinder (11), an air inlet port (15) and an air outlet port (16) are connected to the side of the drying cylinder (11), and bearing seats (14) are fixedly connected to both ends of the top surface of the drying cylinder (11).

3. A drying device for producing boehmite by a combined process according to claim 2, characterized in that: The feeding mechanism (2) comprises a feeding shell (21), one end of the feeding shell (21) is connected to a driving motor (22) by bolts, the output end of the driving motor (22) is connected to a screw cylinder (23), the top of the feeding shell (21) is connected to a feeding pipeline (24) and an air outlet pipeline (25), the top of the inner cavity of the feeding shell (21) is fixedly connected to a sealing ring (26), the bottom end of the inner cavity of the feeding shell (21) is provided with a discharge groove (27), the bottom of the feeding shell (21) is fixedly connected to a discharge port (28) near the discharge groove (27), a dryer and a heater are installed between the air inlet port (15) and the air outlet pipeline (25), and the air outlet pipeline (25), the dryer, the heater and the air inlet port (15) are sequentially connected through pipelines.

4. A drying method for producing boehmite by a combined process, which is realized based on a drying device for producing boehmite by a combined process as claimed in any one of claims 1 to 3, characterized in that: The following steps are involved: S1: A control module and a sensor module are mounted on the drying mechanism (1), and the control module collects a historical training data set in advance; S2: Based on the historical training data set, the control module trains a machine learning model for predicting the speed value of the transport mechanism (5); S3: The control module collects temperature data, flow data and humidity data of the drying device in real time through the sensor module; S4: Based on the temperature data, flow data and humidity data of the drying device collected in real time, a machine learning model is used to predict the rotation speed value of the transport mechanism (5); S5: Based on the predicted rotation speed value of the transport mechanism (5), the drying device is controlled to dry the boehmite.

5. The drying method for producing boehmite by a combined process according to claim 4, characterized in that: The historical training data set includes N groups of training data, where N is a positive integer, and each group of training data includes feature data and label data, wherein the feature data includes temperature data, flow data, and humidity data; The temperature data is the temperature value of the hot air entering the drying mechanism (1) when collecting each set of training data; The flow data is the flow value of the hot air entering the drying mechanism (1) when collecting each set of training data; The humidity data is the humidity value and humidity change rate of the boehmite in the transport mechanism (5) when collecting each set of training data; The label data is the rotation speed value of the transport mechanism (5) when each set of training data is collected.

6. The drying method for producing boehmite by a combined process according to claim 4, characterized in that: A humidity sensor is arranged in the bidirectional channel, and the humidity sensor collects first humidity data and second humidity data in the bidirectional channel, and generates a humidity change rate of the boehmite based on the first humidity data and the second humidity data.

7. The drying method for producing boehmite by a combined process according to claim 5, characterized in that: The training method of the machine learning model is: The feature data in the training data is converted into a feature vector. The feature vector is used as the input of the machine learning model. The speed value predicted by the machine learning model for the feature data is used as the output. The speed value in the label data corresponding to the feature data is used as the prediction target. The training target is to minimize the sum of all prediction accuracies. The calculation formula for prediction accuracy is ui=(si-mi) 2 , where ui is the prediction accuracy, si is the predicted speed value corresponding to the feature data in the i-th group of training data, and mi is the speed value in the label data in the i-th group of training data. The machine learning model is trained until the sum of the prediction accuracies reaches convergence and the training is stopped.

Images