Intelligent anti-blocking method and device for drying machine, storage medium and drying machine

Abstract

The invention discloses an intelligent anti-blocking method and device for a drying machine, a storage medium and the drying machine, and belongs to the technical field of mechanical automation. The method comprises the steps that material type information and a material humidity value of a to-be-dried material are collected, and the initial frequency of a material stirring wheel is determined; drying machine operation parameters are obtained, wherein the drying machine operation parameters comprise the elevator current, the elevator bottom pressure, the elevator first side wall pressure and the elevator second side wall pressure; adjusting the frequency of a material stirring wheel according to the current of the elevator so as to ensure that the elevator is in a normal operation state or a low-load operation state; and the frequency of the material stirring wheel is adjusted according to the elevator bottom pressure, the elevator first side wall pressure and the elevator second side wall pressure. The frequency of the material stirring wheel is adjusted according to the current and pressure of the elevator, overload operation or blocking of the elevator is avoided, manual judgment and operation are not needed in the control process, full-automatic anti-blocking control is achieved, the intelligent level is high, the drying efficiency is effectively improved, and the equipment maintenance and operation cost is reduced.

Description

Technical Field

[0001] This application relates to the field of mechanical automation technology, specifically to a method for intelligent anti-clogging of a dryer, a device for intelligent anti-clogging of a dryer, a machine-readable storage medium, and a dryer. Background Technology

[0002] A dryer is a mechanical device that uses heat energy to reduce the moisture content of materials, used for drying operations. Grain dryers are crucial in agricultural production, primarily used to reduce the moisture content of grains to ensure safe and high-quality storage. However, during the drying process, factors such as uneven grain flow, excessively fast feeding speed, or unreasonable internal structural design of the dryer can lead to clogging problems. Clogging not only interrupts the drying process and reduces efficiency but can also damage equipment, increase maintenance costs, and even affect grain quality. Therefore, how to reduce the probability of clogging while ensuring circulation rate (i.e., drying efficiency) has become a key issue in the design and optimization of grain dryers.

[0003] Currently, the anti-clogging methods for grain dryers have limited intelligence. Some anti-clogging systems still rely on manual judgment and operation, resulting in a low level of intelligence and the inability to achieve fully automated anti-clogging control. Clogging problems lead to equipment failure and increased maintenance costs. Summary of the Invention

[0004] The purpose of this application is to provide an intelligent anti-clogging method, device, storage medium, and dryer for dryers, in order to solve the shortcomings of existing anti-clogging methods for dryers, which have limited intelligence, rely on manual judgment and operation for some anti-clogging systems, have low intelligence levels, and cannot achieve fully automated anti-clogging control.

[0005] To achieve the above objectives, the first aspect of this application provides an intelligent anti-clogging method for a dryer, the intelligent anti-clogging method for a dryer comprising: Collect information on the type of material and the moisture content of the material to be dried, and determine the initial frequency of the feeding wheel; Obtain the dryer operating parameters, which include: elevator current, elevator bottom pressure, elevator first sidewall pressure, and elevator second sidewall pressure; Adjust the frequency of the feed wheel according to the current of the elevator to ensure that the elevator is in normal operation or low load operation. The frequency of the feeding wheel is adjusted according to the pressure at the bottom of the elevator, the pressure on the first side wall of the elevator, and the pressure on the second side wall of the elevator.

[0006] Through the above-mentioned technical means, the initial frequency of the feeding wheel, set according to the type and moisture content of the material to be dried, can better meet the actual operating needs of the dryer. During the operation of the dryer, the frequency of the feeding wheel is adjusted according to the current of the elevator to avoid overloading of the elevator. The frequency of the feeding wheel is adjusted according to the pressure at the bottom of the elevator, the pressure on the first side wall of the elevator, and the pressure on the second side wall of the elevator to avoid elevator blockage. The control process does not require manual judgment and operation, and can achieve fully automated anti-blocking control with a high level of intelligence, effectively improving the drying efficiency of the dryer and reducing equipment maintenance and operating costs.

[0007] In some feasible embodiments, determining the initial frequency of the feed wheel includes: Based on the material type information and the material humidity value, a frequency query request is generated and sent to the IoT terminal; Receive the first feed wheel frequency sent by the IoT terminal according to the frequency query request; Set the frequency of the first feed wheel to the initial frequency of the feed wheel.

[0008] Using the above-mentioned technical means, the current material type information and the corresponding material humidity value of the feeding wheel can be queried by using the historical feeding wheel frequency stored in the Internet of Things terminal, which corresponds to the type of material to be dried and the material humidity value. This allows the initial frequency of the feeding wheel to be set, making the set initial frequency of the feeding wheel more in line with the actual drying needs and reducing the probability of blockage from the source.

[0009] In some feasible embodiments, determining the initial frequency of the feed wheel includes: The frequency of the second feeding wheel is obtained by referring to a table based on the current type of material being dried and the material's moisture content. Set the frequency of the second feed wheel to the initial frequency of the feed wheel.

[0010] Using the above-mentioned technical means, the frequency of the second feeding wheel can be obtained directly by looking up the table based on the type of dried material and the material moisture value, avoiding blindly setting the initial frequency of the feeding wheel and shortening the time spent in the frequency adjustment stage of the feeding wheel.

[0011] In some feasible embodiments, the frequency of the feed wheel is adjusted according to the current of the elevator to ensure that the elevator is in normal operation or low-load operation, including: If the current of the hoist is less than or equal to the rated current of the first preset ratio, then the hoist is determined to be in a low-load operating state. If the current of the hoist is greater than the rated current of the first preset ratio, but less than or equal to the rated current, then the hoist is determined to be in normal operating condition. If the current of the hoist is greater than the rated current and less than or equal to the rated current of the second preset ratio, then the hoist is determined to be in a pre-overload operation state, and current overload feedback adjustment is performed. If the current of the hoist is greater than the rated current of the second preset ratio, the hoist is determined to be in an overload operation state, and the hoist is stopped and emergency blockage treatment is carried out.

[0012] Based on the above technical means, the operating state of the elevator can be determined by the elevator current, and then adjustments can be made according to the operating state. When the elevator is running normally or under low load, it can be determined that no blockage has occurred. When the elevator is running under pre-overload, it can be determined that the elevator has a risk of blockage and the frequency of the feeding wheel needs to be adjusted. When the elevator is running under overload, it can be determined that the elevator has been blocked and the machine needs to be stopped and emergency blockage treatment should be carried out.

[0013] In some feasible embodiments, the current overload feedback regulation includes: Reduce the frequency of the feed wheel by the third preset ratio, and after running for a preset time, re-determine the operating status of the elevator based on the elevator current.

[0014] Based on the above technical means, the current of the elevator can be adjusted by reducing the frequency of the feeding wheel, so as to avoid the elevator being in a pre-overload state for a long time and causing blockage.

[0015] In some feasible embodiments, the height of the sampling positions of the bottom pressure of the hoist, the first side wall pressure of the hoist, and the second side wall pressure of the hoist from the ground increases sequentially. Adjusting the frequency of the feeding wheel based on the pressure at the bottom of the elevator, the pressure on the first side wall of the elevator, and the pressure on the second side wall of the elevator includes: Determine the pressure range of the bottom pressure of the elevator, the first side wall pressure of the elevator, or the second side wall pressure of the elevator; If the bottom pressure of the elevator is less than or equal to the upper limit of the bottom pressure, the frequency of the feeding wheel should be increased according to the change in the bottom pressure. If the bottom pressure of the elevator is greater than the upper limit of the bottom pressure, and the pressure of the first side wall of the elevator is less than or equal to the upper limit of the first side wall pressure, then maintain the current feeding wheel frequency; If the pressure at the bottom of the elevator is greater than the upper limit of the bottom pressure, and the pressure on the first side wall of the elevator is greater than the upper limit of the first side wall pressure, and the pressure on the second side wall of the elevator is less than or equal to the upper limit of the second side wall pressure, then the frequency of the feeding wheel should be reduced according to the change value of the second side wall pressure. If the pressure at the bottom of the elevator is greater than the upper limit of the bottom pressure, and the pressure on the first side wall of the elevator is greater than the upper limit of the first side wall pressure, and the pressure on the second side wall of the elevator is greater than the upper limit of the second side wall pressure, then the feeding wheel will stop for a preset time and count. When the preset number of times is reached, and the pressure on the second side wall of the elevator still has not dropped to less than or equal to the upper limit of the second side wall pressure, the machine will be stopped and emergency blockage treatment will be carried out.

[0016] Based on the aforementioned technical methods, the possible operating conditions of the elevator are judged by the relationship between the elevator pressure at different locations and the upper limit of the pressure. When the bottom pressure of the lowest elevator is not greater than the upper limit of the bottom pressure, it indicates that the elevator is not currently operating at full load, and the frequency of the feeding wheel can be increased. When the bottom pressure of the lowest elevator is greater than the upper limit of the bottom pressure, and the pressure on the first side wall of the elevator at the middle height is less than or equal to the upper limit of the first side wall pressure, it indicates that the material discharge is smooth and there is no blockage, and operation can continue. When the force exceeds the upper limit of the first sidewall pressure, it indicates that an overload has occurred at the middle height. Further adjustments need to be made based on the pressure of the second sidewall of the elevator at the highest position. When the pressure of the second sidewall of the elevator is less than or equal to the upper limit of the second sidewall pressure, the frequency of the feeding wheel should be reduced according to the change in the pressure of the second sidewall. When the pressure of the second sidewall of the elevator is greater than the upper limit of the second sidewall pressure, the feeding wheel should be stopped for a preset time and counted. When the preset number of counts is reached and the pressure of the second sidewall of the elevator has not dropped to less than or equal to the upper limit of the second sidewall pressure, the machine should be stopped and emergency blockage treatment should be carried out.

[0017] In some feasible embodiments, adjusting the frequency of the feeding wheel according to the change in bottom pressure includes: Maintain the feed wheel operation for the preset duration; Calculate the change in bottom pressure per unit time using the bottom pressure of the elevator after a preset time and the bottom pressure of the elevator before the preset time. When the bottom pressure change value per unit time is less than the preset change range, the current feed wheel frequency is increased by a fourth preset proportion every preset time.

[0018] Based on the above technical means, the trend of bottom pressure change can be determined by the bottom pressure change value per unit time. If the bottom pressure change is large, it means that the bottom pressure will increase quickly as the dryer runs. In this case, no adjustment is needed, and the elevator can reach normal operating status in a short time under normal operation. When the bottom pressure change is small, it takes a long time for the elevator to reach normal operating status. At this time, the low load operation time of the elevator can be shortened by increasing the frequency of the feeding wheel, thereby improving the working efficiency of the dryer.

[0019] In some feasible embodiments, adjusting the frequency of the feeding wheel based on the change in pressure on the second sidewall includes: Maintain the feed wheel operation for the preset duration; The change in the second sidewall pressure per unit time is calculated using the pressure on the second sidewall of the hoist after a preset time and the pressure on the second sidewall of the hoist before a preset time. When the change in pressure on the second sidewall per unit time exceeds the preset change range, the frequency of the current feeding wheel is reduced by a fourth preset proportion every preset time.

[0020] Based on the above technical means, the trend of the second sidewall pressure can be determined by the change value of the second sidewall pressure per unit time. If the change of the second sidewall pressure is large, it means that blockage will soon occur as the dryer runs, and the frequency of the feeding wheel needs to be reduced in time to avoid blockage. If the change of the second sidewall pressure is small, pressure monitoring can be carried out continuously without adjusting the frequency of the feeding wheel, so as to ensure the dryer operates normally without blockage to the greatest extent.

[0021] In some feasible embodiments, the congestion emergency handling includes: The auger is controlled to reverse direction; When the pressure on the first side wall of the hoist is detected to be less than or equal to the upper limit of the first side wall pressure, the hoist is started and the hoist current is monitored. If the hoist current is detected to be less than or equal to the rated current of the second preset ratio, the hoist will continue to start; otherwise, the hoist will be shut down and the hoist will continue to wait for the first preset time. After starting the hoist and monitoring that the pressure at the bottom of the hoist is less than or equal to the upper limit of the bottom pressure, control the auger to rotate forward; After the second preset time of forward rotation of the auger, reset the initial frequency of the feeding wheel.

[0022] Based on the above technical means, the auger is automatically reversed to discharge the blocked material to the collection hopper, thus clearing the blockage. The pressure on the first side wall of the elevator is monitored to determine whether the elevator should be started. After the elevator is started, the elevator current is used to determine whether the elevator is overloaded, and whether to delay starting the elevator. After the elevator is not overloaded, the pressure at the bottom of the elevator is used to determine whether the auger should start forward rotation, thus achieving automatic clearing of the blockage without manual intervention. After the auger rotates forward for a second preset time, the initial frequency of the feeding wheel is reset, and the feeding operation is restarted.

[0023] A second aspect of this application provides an intelligent anti-clogging device for a dryer, the intelligent anti-clogging device for a dryer comprising: The initial frequency setting unit is used to collect information on the type of material and the moisture content of the material to be dried, and to determine the initial frequency of the feeding wheel. The operating parameter acquisition unit acquires the operating parameters of the dryer, which include: elevator current, elevator bottom pressure, elevator first sidewall pressure and elevator second sidewall pressure. The first adjustment unit is used to adjust the frequency of the feeding wheel according to the current of the elevator to ensure that the elevator is in normal operation or low load operation. The second adjustment unit is used to adjust the frequency of the feeding wheel according to the pressure at the bottom of the elevator, the pressure on the first side wall of the elevator, and the pressure on the second side wall of the elevator.

[0024] A third aspect of this application provides a dryer, comprising: an elevator, a feeding wheel, a lower auger, a pressure acquisition device, a humidity acquisition device, and a controller. The elevator, feeding wheel, and lower auger are electrically connected to the controller. The pressure acquisition device is used to acquire the bottom pressure of the elevator, the pressure of the first side wall of the elevator, and the pressure of the second side wall of the elevator and transmit them to the controller. The humidity acquisition device is used to acquire the humidity value of the material. The controller is used to acquire information about the type of material to be dried and the humidity value of the material, determine the initial frequency of the feeding wheel, and acquire the elevator current. The controller adjusts the frequency of the feeding wheel according to the elevator current to ensure that the elevator is in normal operation or low-load operation. The controller also adjusts the frequency of the feeding wheel according to the bottom pressure of the elevator, the pressure of the first side wall of the elevator, and the pressure of the second side wall of the elevator.

[0025] A fourth aspect of this application provides a machine-readable storage medium storing instructions for causing a machine to perform the aforementioned intelligent anti-clogging method for a dryer.

[0026] Through the above technical solution, the initial frequency of the feeding wheel, set according to the type and moisture content of the material to be dried, can better meet the actual operating needs of the dryer. During the operation of the dryer, the frequency of the feeding wheel is adjusted according to the current of the elevator to avoid overloading of the elevator. The frequency of the feeding wheel is adjusted according to the pressure at the bottom of the elevator, the pressure on the first side wall of the elevator, and the pressure on the second side wall of the elevator to prevent the elevator from clogging. The control process does not require manual judgment and operation, and can achieve fully automated anti-clogging control with a high level of intelligence. It effectively improves the drying efficiency of the dryer and reduces equipment maintenance and operating costs.

[0027] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0028] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. In the drawings: Figure 1 The schematic diagram illustrates a flow chart of an intelligent anti-clogging method for a dryer according to an embodiment of this application; Figure 2 A flowchart illustrating the adjustment of the feed wheel frequency according to the elevator current, according to an embodiment of this application, is shown schematically. Figure 3 This schematically illustrates a flowchart of adjusting the frequency of the feeding wheel according to the bottom pressure change value according to an embodiment of this application; Figure 4 A flowchart illustrating the process of maintaining the current feed wheel frequency based on bottom pressure and first sidewall pressure according to an embodiment of this application is shown schematically. Figure 5 A flowchart illustrating the adjustment of the feed roller frequency based on the change in pressure on the second sidewall, according to an embodiment of this application, is shown. Figure 6 This schematically illustrates a control flowchart showing that the pressure on the second sidewall of the hoist is greater than the upper limit value of the second sidewall pressure according to an embodiment of this application; Figure 7 A flowchart illustrating a blockage emergency response procedure according to an embodiment of this application is shown schematically. Figure 8 A block diagram of an intelligent anti-clogging system for a dryer according to an embodiment of this application is shown schematically; Figure 9 A block diagram of a dryer blockage emergency treatment system according to an embodiment of this application is shown schematically; Figure 10 A block diagram of a dryer feed roller initial frequency setting system according to an embodiment of this application is shown schematically. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for illustration and explanation of the embodiments of this application and are not intended to limit the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0030] It should be noted that the acquisition, transmission, storage, use, and processing of data in the technical solution of this application all comply with relevant laws and regulations. In the embodiments of this application, certain existing industry solutions such as software, components, and models may be mentioned. These should be considered exemplary, intended only to illustrate the feasibility of implementing the technical solution of this application, and do not imply that the applicant has already used or necessarily used such solutions.

[0031] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0032] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0033] Figure 1 The illustration shows a schematic flowchart of an intelligent anti-clogging method for a dryer according to an embodiment of this application. Figure 1 As shown in the figure, this application provides an intelligent anti-clogging method for a dryer, which may include the following steps.

[0034] S1: Collect information on the material type and moisture content of the material to be dried to determine the initial frequency of the feeding rollers. Before the drying operation, the operating area of ​​the dryer and the material type are manually input through a human-machine interface, and the moisture content of the material is collected through a moisture acquisition device. In some feasible embodiments, the moisture acquisition device can be a moisture meter.

[0035] In some feasible embodiments, determining the initial frequency of the feed wheel includes: Based on the material type information and the material humidity value, a frequency query request is generated and sent to the IoT terminal. After receiving the frequency query request, the IoT terminal queries the corresponding feed roller frequency based on the type of dried material and the material humidity value. For the same production unit with different models of dryers in different areas, it is also necessary to add the drying operation area to the frequency query request to determine the model of the dryer and thus query the frequency more accurately.

[0036] Receive the first feed wheel frequency sent by the IoT terminal according to the frequency query request; Set the frequency of the first feeding wheel to the initial frequency of the feeding wheel. Specifically, the frequency of the first feeding wheel can be set in the feeding wheel frequency converter.

[0037] Using the above-mentioned technical means, the current material type information and the corresponding material humidity value of the feeding wheel can be queried by using the historical feeding wheel frequency stored in the Internet of Things terminal, which corresponds to the type of material to be dried and the material humidity value. This allows the initial frequency of the feeding wheel to be set, making the set initial frequency of the feeding wheel more in line with the actual drying needs and reducing the probability of blockage from the source.

[0038] In some cases, the frequency corresponding to the type of dried material and its moisture content cannot be found on the IoT terminal. In such cases, determining the initial frequency of the feeding wheel includes: The frequency of the second feeding wheel is obtained by referring to a table based on the current type of material being dried and the material's moisture content. The frequency of the second feeding wheel is set as the initial frequency of the feeding wheel. In a typical embodiment, the feeding wheel frequency is divided into three levels: 25%, 50%, and 75% based on the material moisture value. The corresponding frequency can be obtained by looking up a table according to the corresponding material moisture value and set as the initial frequency of the feeding wheel. After the feeding wheel frequency converter is set to the desired frequency, it starts running and performs the next adjustment.

[0039] Using the above-mentioned technical means, the frequency of the second feeding wheel can be obtained directly by looking up the table based on the type of dried material and the material moisture value, avoiding blindly setting the initial frequency of the feeding wheel and shortening the time spent in the frequency adjustment stage of the feeding wheel.

[0040] S2: Acquire dryer operating parameters, including: elevator current, elevator bottom pressure, elevator first sidewall pressure, and elevator second sidewall pressure. In this embodiment, the height of the elevator bottom pressure, elevator first sidewall pressure, and elevator second sidewall pressure acquisition positions from the ground increases sequentially. The elevator bottom pressure, elevator first sidewall pressure, and elevator second sidewall pressure are acquired by pressure sensors installed at different locations on the elevator. The elevator current is acquired in real time by a data acquisition module and transmitted to the controller.

[0041] S3: Adjust the frequency of the feed wheel according to the current of the elevator to ensure that the elevator is in normal operation or low load operation.

[0042] In some feasible embodiments, such as Figure 2 As shown, adjusting the frequency of the feed wheel according to the current of the elevator to ensure that the elevator is in normal operation or low-load operation includes: The operating status of the hoist is determined based on the section of the hoist current. Specifically, this includes: If the hoist current is less than or equal to the rated current of the first preset ratio I 额If the elevator is determined to be in a low-load operating state, the first preset ratio is set according to the actual operating parameters of the elevator. In a typical embodiment, the first preset ratio is 0.8. When the elevator is determined to be in a low-load operating state, all current pressure values ​​and material moisture content are uploaded. If the elevator current is greater than the rated current of the first preset ratio but less than or equal to the rated current, the elevator is determined to be in a normal operating state. If the elevator current is greater than the rated current but less than or equal to the rated current of the second preset ratio, the elevator is determined to be in a pre-overload operating state. The second preset ratio is set according to the actual operating parameters of the elevator. In a typical embodiment, the second preset ratio is 1.05. If the elevator current is greater than the rated current of the second preset ratio, the elevator is determined to be in an overload operating state.

[0043] When the elevator is running at low load, the frequency of the feed rollers is not directly adjusted. At this time, the pressure at the bottom of the elevator is usually lower than the upper limit of the bottom pressure. The frequency of the feed rollers can be increased according to the bottom pressure of the elevator. This allows for a gradual increase in the feed roller frequency, avoiding excessive frequency increase that could lead to overshoot and blockage. The operating status of the elevator, whether it is running normally or at low load, is displayed on the touch screen.

[0044] If the hoist is in a pre-overload operation state, current overload feedback adjustment is performed, and a prompt is displayed on the touch screen. If the elevator is in an overloaded operating state, it shall be stopped and emergency blockage treatment shall be performed. At the same time, an alarm shall be triggered on the touch screen. In this embodiment of the application, the shutdown includes stopping the operation of the feeding wheel, stopping the operation of the lower auger, and stopping the operation of the elevator.

[0045] Based on the above technical means, the operating state of the elevator can be determined by the elevator current, and then adjustments can be made according to the operating state. When the elevator is running normally or under low load, it can be determined that no blockage has occurred. When the elevator is running under pre-overload, it can be determined that the elevator has a risk of blockage and the frequency of the feeding wheel needs to be adjusted. When the elevator is running under overload, it can be determined that the elevator has been blocked and the machine needs to be stopped and emergency blockage treatment should be carried out.

[0046] In some feasible embodiments, the current overload feedback regulation includes: The frequency of the feed roller is reduced by a third preset ratio, and after running for a preset time, the operating status of the elevator is reassessed based on the elevator current. The third preset ratio can be obtained based on historical adjustment experience; in a typical embodiment, the third preset ratio is 10%.

[0047] Based on the above technical means, the current of the elevator can be adjusted by reducing the frequency of the feeding wheel, so as to avoid the elevator being in a pre-overload state for a long time and causing blockage.

[0048] S4: Based on the pressure at the bottom of the elevator K t The pressure on the first side wall of the hoist K1 t and the pressure on the second side wall of the hoist K2 t Adjust the frequency of the feed roller.

[0049] In some feasible embodiments, adjusting the frequency of the feeding wheel based on the bottom pressure of the elevator, the first sidewall pressure of the elevator, and the second sidewall pressure of the elevator includes: Determine the pressure range of the bottom pressure of the elevator, the first side wall pressure of the elevator, or the second side wall pressure of the elevator; If the pressure at the bottom of the elevator K t Less than or equal to the upper limit of bottom pressure K 限 Then, adjust the frequency of the feeding wheel according to the change in bottom pressure.

[0050] like Figure 3 As shown, the frequency of the feeding wheel is adjusted according to the change in bottom pressure, including: Keep the feed wheel running for a preset time (n minutes); the preset time can be set according to the debugging cycle.

[0051] The change in bottom pressure per unit time is calculated using the bottom pressure of the hoist after a preset time and the bottom pressure of the hoist before the preset time. Specifically, the bottom pressure of the hoist after n minutes can be calculated. K t Subtract the pressure at the bottom of the hoist from n minutes ago K t Then divide by n minutes to get the pressure change per minute.

[0052] When the bottom pressure change per unit time is less than the preset change range α, the current feed wheel frequency is increased by a fourth preset proportion every preset time interval. The preset change range and the fourth preset proportion can be set according to the actual operating parameters of the elevator. In a typical embodiment, the fourth preset proportion is 1%.

[0053] Based on the above technical means, the trend of bottom pressure change can be determined by the bottom pressure change value per unit time. If the bottom pressure change is large, it means that the bottom pressure will increase quickly as the dryer runs. In this case, no adjustment is needed, and the elevator can reach normal operating status in a short time under normal operation. When the bottom pressure change is small, it takes a long time for the elevator to reach normal operating status. At this time, the low load operation time of the elevator can be shortened by increasing the frequency of the feeding wheel, thereby improving the working efficiency of the dryer.

[0054] like Figure 4 As shown, if the pressure at the bottom of the hoist K t Greater than the upper limit of bottom pressure K 限 And the pressure on the first side wall of the hoist K1 t Less than or equal to the upper limit of the first sidewall pressure K1 限 If so, the current feed wheel frequency will be maintained; If the pressure at the bottom of the elevator K t Greater than the upper limit of bottom pressure K 限 And the pressure on the first side wall of the hoist K1 t Greater than the upper limit of the first sidewall pressure K1 限 And the pressure on the second side wall of the hoist K2 t Less than or equal to the upper limit of the second sidewall pressure K2 限 Then, adjust the frequency of the feeding wheel according to the pressure change value of the second side wall.

[0055] In some feasible embodiments, such as Figure 5 As shown, adjusting the frequency of the feeding wheel according to the pressure change value of the second sidewall includes: Keep the feeding wheel running for a preset time (n minutes); The change in the second sidewall pressure per unit time is calculated using the pressure on the second sidewall of the hoist after a preset time and the pressure on the second sidewall of the hoist before the preset time; specifically, the change in the pressure on the second sidewall of the hoist after n minutes can be calculated. K2 nt Subtract the pressure on the second side wall of the hoist from n minutes ago K2 t Then divide by n minutes to get the change in pressure on the second sidewall per minute.

[0056] When the change in pressure on the second sidewall per unit time exceeds the preset change range α, the current feed wheel frequency is reduced by 1% by a fourth preset proportion every preset time interval. Ft .

[0057] Based on the above technical means, the trend of the second sidewall pressure can be determined by the change value of the second sidewall pressure per unit time. If the change of the second sidewall pressure is large, it means that blockage will soon occur as the dryer runs, and the frequency of the feeding wheel needs to be reduced in time to avoid blockage. If the change of the second sidewall pressure is small, pressure monitoring can be carried out continuously without adjusting the frequency of the feeding wheel, so as to ensure the dryer operates normally without blockage to the greatest extent.

[0058] like Figure 6 As shown, if the pressure at the bottom of the hoist K t Greater than the upper limit of bottom pressure K 限 And the pressure on the first side wall of the hoist K1 t Greater than the upper limit of the first sidewall pressure K1 限 And the pressure on the second side wall of the hoist K2 t Greater than the upper limit of the second sidewall pressure K2 限 If the feed roller stops for a preset time and a count is performed, the machine will stop and emergency blockage handling will be carried out when the preset number of counts is reached and the pressure on the second side wall of the elevator has not dropped to less than or equal to the upper limit of the second side wall pressure. In a typical embodiment, the preset number of counts is 3. It should be noted that during the n minutes that the feed roller stops, other components of the dryer, such as the elevator and the lower auger, continue to operate to clear the blockage.

[0059] Based on the aforementioned technical methods, the possible operating conditions of the elevator are judged by the relationship between the elevator pressure at different locations and the upper limit of the pressure. When the bottom pressure of the lowest elevator is not greater than the upper limit of the bottom pressure, it indicates that the elevator is not currently operating at full load, and the frequency of the feeding wheel can be increased. When the bottom pressure of the lowest elevator is greater than the upper limit of the bottom pressure, and the pressure on the first side wall of the elevator at the middle height is less than or equal to the upper limit of the first side wall pressure, it indicates that the material discharge is smooth and there is no blockage, and operation can continue. When the force exceeds the upper limit of the first sidewall pressure, it indicates that an overload has occurred at the middle height. Further adjustments need to be made based on the pressure of the second sidewall of the elevator at the highest position. When the pressure of the second sidewall of the elevator is less than or equal to the upper limit of the second sidewall pressure, the frequency of the feeding wheel should be reduced according to the change in the pressure of the second sidewall. When the pressure of the second sidewall of the elevator is greater than the upper limit of the second sidewall pressure, the feeding wheel should be stopped for a preset time and counted. When the preset number of counts is reached and the pressure of the second sidewall of the elevator has not dropped to less than or equal to the upper limit of the second sidewall pressure, the machine should be stopped and emergency blockage treatment should be carried out.

[0060] In some feasible embodiments, such as Figure 7 As shown, the emergency blockage handling includes: The auger is reversed under control to discharge the blockage material to the collection hopper; When the pressure on the first side wall of the hoist is detected to be less than or equal to the upper limit of the first side wall pressure, the hoist is started and the hoist current is monitored. When the hoist current is detected to be less than or equal to the rated current of the second preset ratio, the hoist continues to start; otherwise, the hoist is shut down and the hoist continues to wait for the first preset time T1. The first preset time is determined by combining the bottom volume of the hoist and the carrying capacity of the lower auger with actual measured segments.

[0061] After starting the hoist and monitoring that the pressure at the bottom of the hoist is less than or equal to the upper limit of the bottom pressure, control the auger to rotate forward; After the lower auger rotates for the second preset time, the initial frequency of the feeding wheel is reset. The second preset time is determined based on the hopper volume and the lower auger's carrying capacity, combined with actual measurements in segments.

[0062] Based on the above technical means, the auger is automatically reversed to discharge the blocked material to the collection hopper, thus clearing the blockage. The pressure on the first side wall of the elevator is monitored to determine whether the elevator should be started. After the elevator is started, the elevator current is used to determine whether the elevator is overloaded, and whether to delay starting the elevator. After the elevator is not overloaded, the pressure at the bottom of the elevator is used to determine whether the auger should start forward rotation, thus achieving automatic clearing of the blockage without manual intervention. After the auger rotates forward for a second preset time, the initial frequency of the feeding wheel is reset, and the feeding operation is restarted.

[0063] Through the above-mentioned technical means, the initial frequency of the feeding wheel, set according to the type and moisture content of the material to be dried, can better meet the actual operating needs of the dryer. During the operation of the dryer, the frequency of the feeding wheel is adjusted according to the current of the elevator to avoid overloading of the elevator. The frequency of the feeding wheel is adjusted according to the pressure at the bottom of the elevator, the pressure on the first side wall of the elevator, and the pressure on the second side wall of the elevator to avoid elevator blockage. The control process does not require manual judgment and operation, and can achieve fully automated anti-blocking control with a high level of intelligence, effectively improving the drying efficiency of the dryer and reducing equipment maintenance and operating costs.

[0064] A second aspect of this application provides an intelligent anti-clogging device for a dryer, the intelligent anti-clogging device for a dryer comprising: The initial frequency setting unit is used to collect information on the type of material and the moisture content of the material to be dried, and to determine the initial frequency of the feeding wheel. The operating parameter acquisition unit acquires the operating parameters of the dryer, which include: elevator current, elevator bottom pressure, elevator first sidewall pressure and elevator second sidewall pressure. The first adjustment unit is used to adjust the frequency of the feeding wheel according to the current of the elevator to ensure that the elevator is in normal operation or low load operation. The second adjustment unit is used to adjust the frequency of the feeding wheel according to the pressure at the bottom of the elevator, the pressure on the first side wall of the elevator, and the pressure on the second side wall of the elevator.

[0065] A third aspect of this application provides a dryer, comprising: an elevator, a feeding wheel, a lower auger, a pressure acquisition device, a humidity acquisition device, and a controller. The elevator, feeding wheel, and lower auger are electrically connected to the controller. The pressure acquisition device is used to acquire the bottom pressure of the elevator, the pressure of the first side wall of the elevator, and the pressure of the second side wall of the elevator and transmit them to the controller. The humidity acquisition device is used to acquire the humidity value of the material. The controller is used to acquire information about the type of material to be dried and the humidity value of the material, determine the initial frequency of the feeding wheel, and acquire the elevator current. The controller adjusts the frequency of the feeding wheel according to the elevator current to ensure that the elevator is in normal operation or low-load operation. The controller also adjusts the frequency of the feeding wheel according to the bottom pressure of the elevator, the pressure of the first side wall of the elevator, and the pressure of the second side wall of the elevator.

[0066] In one feasible embodiment, this application provides an intelligent anti-clogging system for a dryer. The system includes an IoT platform, a remote terminal, a controller, a data acquisition module, a variable frequency feeding wheel, a lower auger, and a touchscreen. Figure 8 As shown, this system assesses multiple pressure values ​​at the bottom of the elevator, elevator current, and the degree of grain agglomeration during the drying process. Based on calculations of multi-source data, it determines and assigns importance levels to adjust the frequency of the feeding rollers to prevent dryer blockage. During the drying operation, the system dynamically adjusts the feeding roller frequency by installing pressure sensors at multiple locations at the bottom of the elevator, combined with the degree of material agglomeration and elevator current values. The controller processes the relevant input information and sends relevant commands to the feeding rollers and the lower auger.

[0067] The data acquisition module is mainly used to collect the moisture content of the material at the feeding wheel and the pressure at the bottom of the elevator. K t Pressure on the first side wall of the hoist K1 t Pressure on the second side wall of the hoist K2 t and hoist current value I t The collected real-time data is transmitted to the dryer controller.

[0068] The touch screen is mainly used to input material type information into the controller and display anti-blocking warning information, blockage alarm information, feed roller frequency information, real-time pressure value, humidity and current value after the controller processes the information.

[0069] The controller processes the collected data and issues start, stop, and frequency adjustment commands to the variable frequency feeding wheel, and issues forward or reverse rotation commands to the lower auger based on the dryer's status.

[0070] The wireless terminal is mainly responsible for uploading the relevant data collected and generated by the dryer controller to the Internet of Things (IoT) platform. It can also access the data stored on the IoT platform through the wireless terminal to reduce the initial frequency pre-adjustment time of the feed roller.

[0071] In one feasible embodiment, the following is applied in the process of implementing congestion emergency handling: Figure 9 The blockage emergency handling system shown includes: a PLC controller, a data acquisition module, an electricity meter, a touch screen HMI, a side wall pressure sensor, a contactor, a hoist motor, a variable frequency feed wheel motor, a lower auger motor, and a collection hopper. The PLC control unit includes the PLC controller's I / O input / output module.

[0072] The PLC control unit collects real-time data on the hoist motor current changes via an RS485 interface. When the current value exceeds the limit of 18A (105% I), 额 When the side wall pressure value collected by the data acquisition module exceeds the limit, the PLC will display the alarm information on the touch screen. The PLC will issue a command to disconnect the AC contactor, and the elevator motor, feed wheel motor, and forward-rotating auger motor will all stop running. After all motors stop running, the auger reversing contactor will engage, and the auger will reverse, transporting the material blocked at the bottom of the elevator to the collection hopper for temporary storage. When the elevator current value meets the requirements and the bottom pressure value drops to a certain level, the elevator will stop operating. K 限 When the elevator motor starts, the lower auger forward rotation contactor engages, and the lower auger motor rotates forward, discharging the material temporarily stored in the collection hopper. When the pressure at the bottom of the elevator approaches 0, the feed wheel motor starts discharging material at 50% of the pre-blockage frequency. Subsequently, it enters the normal adjustment phase.

[0073] In one feasible embodiment, when setting the initial frequency of the feed wheel, the following method is used: Figure 10 The system shown comprises a PLC controller, an IoT platform, a remote terminal, a touch screen, a moisture meter, and a feed roller frequency converter. The moisture meter used is an RN-700KETT, which can collect the current moisture value of the material in real time and determine the current moisture content of the material at the feed roller. The moisture meter transmits data to the PLC controller via RS485.

[0074] The remote terminal module can upload data such as the work area, material moisture content, inverter frequency, and material type collected by the PLC control unit to the cloud server for remote data recording. A connection between the touchscreen and the PLC controller is established via RS485 communication.

[0075] The touchscreen is the human-machine interface, through which the dryer's operating area and material type can be input, and the relevant information can be written to the PLC controller. The connection between the touchscreen and the PLC controller is established via RS232 communication.

[0076] After the remote terminal transmits the data collected by the PLC to the IoT platform via 4G, the platform, based on its database, sends the inverter frequency that matches the specified conditions. Upon receiving this frequency, the PLC control unit sends it to the feed wheel inverter. The inverter then establishes a connection with the PLC controller via RS485 communication.

[0077] The intelligent anti-clogging method for dryers provided in this application is typically applied to grain drying.

[0078] A fourth aspect of this application provides a machine-readable storage medium storing instructions for causing a machine to perform the aforementioned intelligent anti-clogging method for a dryer.

[0079] Through the above technical solution, the initial frequency of the feeding wheel, set according to the type and moisture content of the material to be dried, can better meet the actual operating needs of the dryer. During the operation of the dryer, the frequency of the feeding wheel is adjusted according to the current of the elevator to avoid overloading of the elevator. The frequency of the feeding wheel is adjusted according to the pressure at the bottom of the elevator, the pressure on the first side wall of the elevator, and the pressure on the second side wall of the elevator to prevent the elevator from clogging. The control process does not require manual judgment and operation, and can achieve fully automated anti-clogging control with a high level of intelligence. It effectively improves the drying efficiency of the dryer and reduces equipment maintenance and operating costs.

[0080] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0081] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0082] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0083] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0084] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0085] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0086] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0087] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0088] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A dryer intelligent anti-blocking method, characterized in that, The intelligent anti-blocking method of the dryer comprises the following steps: Collecting material type information and material humidity value of the material to be dried, and determining an initial frequency of the material stirring wheel; Obtaining dryer operation parameters, wherein the dryer operation parameters comprise elevator current, elevator bottom pressure, elevator first sidewall pressure and elevator second sidewall pressure; Adjusting the frequency of the material stirring wheel according to the elevator current, so as to ensure that the operation state of the elevator is normal operation state or low load operation state; Adjusting the frequency of the material stirring wheel according to the elevator bottom pressure, the elevator first sidewall pressure and the elevator second sidewall pressure.

2. The dryer intelligent anti-blocking method of claim 1, wherein, The method for determining the initial frequency of the material stirring wheel comprises the following steps: According to the material type information and the material humidity value, a frequency query request is generated and sent to an Internet of Things terminal; Receiving a first material stirring wheel frequency issued by the Internet of Things terminal according to the frequency query request; Setting the first material stirring wheel frequency as the initial frequency of the material stirring wheel.

3. The dryer intelligent anti-blocking method of claim 1, wherein, The method for determining the initial frequency of the material stirring wheel comprises the following steps: According to the current drying material type and the material humidity value, a second material stirring wheel frequency is obtained by table lookup; Setting the second material stirring wheel frequency as the initial frequency of the material stirring wheel.

4. The dryer intelligent anti-blocking method of claim 1, wherein, The method for adjusting the frequency of the material stirring wheel according to the elevator current, so as to ensure that the operation state of the elevator is normal operation state or low load operation state, comprises the following steps: If the elevator current is less than or equal to a first preset proportion of the rated current, it is determined that the elevator is in a low load operation state; If the elevator current is greater than the first preset proportion of the rated current and less than or equal to the rated current, it is determined that the elevator is in a normal operation state; If the elevator current is greater than the rated current and less than or equal to a second preset proportion of the rated current, it is determined that the elevator is in a pre-overload operation state, and current overload feedback adjustment is performed; If the elevator current is greater than the second preset proportion of the rated current, it is determined that the elevator is in an overload operation state, and the machine is stopped and a blocking emergency treatment is performed.

5. The dryer intelligent anti-blocking method of claim 4, wherein, The current overload feedback adjustment comprises the following steps: Reducing the frequency of the material stirring wheel by a third preset proportion, and then re-determining the operation state of the elevator according to the elevator current after running for a preset time.

6. The dryer intelligent anti-blocking method of claim 1, wherein, The height of the collection position of the elevator bottom pressure, the collection position of the elevator first sidewall pressure and the collection position of the elevator second sidewall pressure from the ground increases in turn; The method for adjusting the frequency of the material stirring wheel according to the elevator bottom pressure, the elevator first sidewall pressure and the elevator second sidewall pressure comprises the following steps: Determining the pressure range of the elevator bottom pressure, the elevator first sidewall pressure and the elevator second sidewall pressure; If the elevator bottom pressure is less than or equal to the upper limit value of the bottom pressure, the frequency of the material stirring wheel is adjusted according to the change value of the bottom pressure; If the elevator bottom pressure is greater than the upper limit value of the bottom pressure and the elevator first sidewall pressure is less than or equal to the upper limit value of the first sidewall pressure, the current frequency of the material stirring wheel is maintained; If the elevator bottom pressure is greater than the upper limit value of the bottom pressure, the elevator first sidewall pressure is greater than the upper limit value of the first sidewall pressure, and the elevator second sidewall pressure is less than or equal to the upper limit value of the second sidewall pressure, the frequency of the material stirring wheel is adjusted according to the change value of the second sidewall pressure; If the bottom pressure of the elevator is greater than the upper limit of the bottom pressure, the first side wall pressure of the elevator is greater than the upper limit of the first side wall pressure, and the second side wall pressure of the elevator is greater than the upper limit of the second side wall pressure, the stop of the material stirring wheel is counted for a preset time, and when the preset number is reached and the second side wall pressure of the elevator is still not reduced to less than or equal to the upper limit of the second side wall pressure, the machine is stopped and the emergency treatment of the blockage is performed.

7. The dryer intelligent anti-blocking method of claim 6, wherein, The method for adjusting the frequency of the material stirring wheel according to the change value of the bottom pressure comprises: keeping the material stirring wheel running for a preset time; calculating the change value of the bottom pressure per unit time by using the bottom pressure of the elevator after the preset time and the bottom pressure of the elevator before the preset time; increasing the current frequency of the material stirring wheel by a fourth preset proportion every preset time when it is determined that the change value of the bottom pressure per unit time is less than a preset change amplitude.

8. The dryer intelligent anti-blocking method of claim 6, wherein, The method for adjusting the frequency of the material stirring wheel according to the change value of the second side wall pressure comprises: keeping the material stirring wheel running for a preset time; calculating the change value of the second side wall pressure per unit time by using the second side wall pressure of the elevator after the preset time and the second side wall pressure of the elevator before the preset time; decreasing the current frequency of the material stirring wheel by a fourth preset proportion every preset time when it is determined that the change value of the second side wall pressure per unit time is greater than a preset change amplitude.

9. The dryer intelligent anti-blocking method of claim 4 or 6, wherein, The emergency treatment of the blockage comprises: controlling the lower auger to reverse; starting the elevator when it is monitored that the first side wall pressure of the elevator is less than or equal to the upper limit of the first side wall pressure, and monitoring the current of the elevator; continuing to start the elevator when it is monitored that the current of the elevator is less than or equal to a second preset proportion of the rated current, or stopping the elevator and continuing to wait for a first preset time; controlling the lower auger to rotate forward when the elevator is started and it is monitored that the bottom pressure of the elevator is less than or equal to the upper limit of the bottom pressure; resetting the initial frequency of the material stirring wheel after the lower auger rotates forward for a second preset time.

10. A dryer intelligent anti-blocking device, characterized in that, The intelligent anti-blocking device of the dryer comprises: an initial frequency setting unit configured to collect material type information and a material humidity value of material to be dried, and determine an initial frequency of a material stirring wheel; an operating parameter acquisition unit configured to acquire operating parameters of the dryer, the operating parameters of the dryer comprising a current of the elevator, a bottom pressure of the elevator, a first side wall pressure of the elevator, and a second side wall pressure of the elevator; a first adjusting unit configured to adjust the frequency of the material stirring wheel according to the current of the elevator, so as to ensure that the operating state of the elevator is a normal operating state or a low-load operating state; a second adjusting unit configured to adjust the frequency of the material stirring wheel according to the bottom pressure of the elevator, the first side wall pressure of the elevator, and the second side wall pressure of the elevator.

11. A dryer characterized by comprising: The dryer comprises an elevator, a poking wheel, a lower stirring dragon, a pressure acquisition device, a humidity acquisition device and a controller, the elevator, the poking wheel and the lower stirring dragon are electrically connected with the controller respectively, the pressure acquisition device is used for acquiring the bottom pressure of the elevator, the first side wall pressure of the elevator and the second side wall pressure of the elevator and transmitting to the controller, and the humidity acquisition device is used for acquiring the material humidity value; the controller is used for acquiring the material type information and the material humidity value of the material to be dried, determining the initial frequency of the poking wheel, and acquiring the current of the elevator, adjusting the frequency of the poking wheel according to the current of the elevator, so as to ensure that the running state of the elevator is a normal running state or a low load running state; and adjusting the frequency of the poking wheel according to the bottom pressure of the elevator, the first side wall pressure of the elevator and the second side wall pressure of the elevator.

12. A machine-readable storage medium, characterized in that, The machine readable storage medium has instructions stored thereon for causing a machine to perform the dryer intelligent anti-blocking method according to any one of claims 1 to 9.

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