Dynamic detection and adjustment system for belt blowing effect

Abstract

The utility model discloses a dynamic detection and adjustment system for a belt blowing effect. The dynamic detection and adjustment system comprises a moisture detector, a controller and a controller, wherein the moisture detector is used for detecting moisture of materials on a conveying section of a conveying belt; the head chute is arranged on one side, close to the head roller, of the conveying belt; the purging device is arranged on the return section of the conveying belt; the belt material sticking detector is arranged at the downstream of the blowing device and is used for detecting whether materials are stuck on the blown conveying belt or not; and the control device is connected with the moisture detector and the belt sticking material detector. The automatic material moisture detection device has the advantages of automatically detecting material moisture, correcting operation frequency or valve opening according to data of the belt sticky material detector, achieving closed-loop control and being high in intelligent degree.

Description

Technical Field

[0001] This utility model relates to the field of belt conveyor equipment technology, and in particular to a dynamic detection and adjustment system for belt blowing effect. Background Technology

[0002] Steel mills transport materials from the ironmaking plant, including coke, miscellaneous ores, solvents, sinter, and pellets, to the blast furnace via belt conveyors in the stockpile. Pig iron is produced through the high-temperature reaction in the blast furnace, while slag is simultaneously transported to the stockpile via belt conveyors.

[0003] Steel mills have a large number of conveyor belts, with return trips carrying material accounting for more than half of the total. Currently, there are two main methods for handling return trip material issues: 1) Water flushing: High-pressure water is used to wash away the sticky material. Its advantages are thorough cleaning and high efficiency. The disadvantages are that some materials containing water can cause problems in subsequent processes, increase water separation costs, and have strict environmental requirements. 2) Air purging: Its advantages are that it has no impact on the material and has low environmental requirements. The disadvantages are that the purging system needs to be matched to different actual conditions. When the material or humidity changes, it relies on worker experience and proactive adjustments, which can lead to over-purging or under-purging. Utility Model Content

[0004] The purpose of this utility model is to address the above-mentioned shortcomings and defects of the existing technology by providing a dynamic detection and adjustment system for belt blowing effect. This system can automatically detect material moisture, and adjust the operating frequency or valve opening based on the data from the belt adhesion detector to achieve closed-loop control. It has a high degree of intelligence and solves the above-mentioned problems.

[0005] The technical problem solved by this utility model can be achieved by the following technical solution:

[0006] A dynamic detection and adjustment system for belt blowing effect includes:

[0007] A moisture detector used to detect the moisture content of materials on the conveyor section of a conveyor belt;

[0008] A head chute is installed on the side of the conveyor belt near the head roller;

[0009] A purging device installed on the return section of the conveyor belt;

[0010] The belt adhesion detector is located downstream of the purging device and is used to detect whether there is any material adhering to the conveyor belt after purging.

[0011] A control device connected to the moisture detector and the belt adhesion detector.

[0012] In a preferred embodiment of this utility model, the control device includes a PLC control device.

[0013] In a preferred embodiment of the present invention, the purging device includes an air knife.

[0014] In a preferred embodiment of this utility model, the air knife is installed below the head roller. Pressurized air enters the air knife through a hose and is ejected at high speed from the air outlet of the air knife to blow away the adhered return material.

[0015] In a preferred embodiment of this utility model, the moisture detector is a non-contact infrared analyzer with a distance of 150mm to 400mm from the material and outputs a 4-20mA signal.

[0016] In a preferred embodiment of this utility model, the belt adhesion detector is a white light spot sensor that outputs a 4-20mA signal according to different colors.

[0017] In a preferred embodiment of this utility model, a return roller is provided on the return section of the conveyor belt.

[0018] In a preferred embodiment of this utility model, the belt adhesion detector needs to be calibrated. The data of the belt adhesion detector is calibrated periodically when the belt is free of material adhesion to determine the data signal value of the belt adhesion detector when the belt is free of material adhesion.

[0019] In a preferred embodiment of this utility model, the control device uses PID regulation to adjust the operating frequency or valve opening by changing the proportional coefficient Kp, integral coefficient Ki, and derivative coefficient Kd based on the data collected by the belt adhesion detector.

[0020] In a preferred embodiment of this utility model, after the moisture detector detects data, it reads operating parameters from the database. The database needs to be iteratively optimized. The moisture detector's data is compared with the data stored in the historical database. Different operating data are automatically written into the database. At the same time, the model is iteratively optimized, and the best matching operating data is automatically selected to realize an automatic control system for different materials, different conveyors, and different moisture contents.

[0021] By employing the above technical solution, compared to existing technologies, this invention features automatic material moisture detection, and adjusts the operating frequency or valve opening based on data from the belt conveyor adhesion detector to achieve closed-loop control, exhibiting a high degree of intelligence. Furthermore, this invention automatically collects data and dynamically adjusts operating parameters, achieving unmanned operation, avoiding over- or under-blowing issues, and reducing energy consumption and worker maintenance. The moisture detector can utilize a non-contact sensor, which is simple to install, does not affect material conveying or belt safety, and is applicable to a wide variety of materials. The operating data of this invention is transmitted to a database for continuous iterative self-learning, providing foundational data for future operations. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of one embodiment of the present invention.

[0024] Figure 2 This is a system flowchart of one embodiment of the present invention.

[0025] Reference numerals: 10 conveyor belt; 11 conveyor section; 12 head roller; 13 return section; 14 return roller; 100 moisture detector; 200 head chute; 300 blowing device; 310 hose; 400 belt adhesion detector; 500 control device. Detailed Implementation

[0026] Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0027] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0028] It should be understood that although the terms "first," "second," "third," etc., may be used in this invention to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] See Figures 1 to 2 The belt blowing effect dynamic detection and adjustment system shown includes a moisture detector 100, a head chute 200, a blowing device 300, a belt material adhesion detector 400, and a control device 500.

[0030] The moisture detector 100 is used to detect the moisture content of the material on the conveying section 11 of the conveyor belt 10. In this embodiment, the moisture detector 100 is a non-contact infrared analyzer with a distance of 150mm to 400mm from the material and outputs a 4-20mA signal.

[0031] The head chute 200 is located on the side of the conveyor belt 10 near the head roller 12 to collect materials. After the materials reach the head roller 12, most of them fall into the head chute 200 due to inertia, while the remaining part sticks to the conveyor belt 10 and runs back along the conveyor belt 10. A return roller 14 is provided on the return section 13 of the conveyor belt 10.

[0032] The purging device 300 is installed on the return section 13 of the conveyor belt 10 to purge the material on the return section 13 of the conveyor belt 10. In this embodiment, the purging device 300 includes an air knife, which is installed below the head roller 12. Pressurized air enters the air knife through the hose 310 and is ejected at high speed from the air outlet of the air knife to purge the adhered return material.

[0033] A belt adhesion detector 400 is located downstream of the purging device 300. The belt adhesion detector 400 is used to detect whether there is any material adhering to the conveyor belt 10 after purging. In this embodiment, the belt adhesion detector 400 is a white light spot sensor, which outputs a 4-20mA signal depending on the color. The belt adhesion detector 400 needs to be calibrated. Periodically, with the belt free of material adhesion, the data of the belt adhesion detector 400 is calibrated to determine the data signal value when the belt is free of material adhesion.

[0034] The control device 500 is connected to the moisture detector 100 and the belt adhesion detector 400. In this embodiment, the control device 500 includes a PLC control device. The control device 500 uses PID regulation to change the proportional coefficient Kp, integral coefficient Ki, and derivative coefficient Kd based on the data collected by the belt adhesion detector 400, thereby adjusting the operating frequency or valve opening.

[0035] After the moisture analyzer 100 detects data, it reads the operating parameters from the database. The database needs to be iteratively optimized. The moisture analyzer 100's detection data is compared with the data stored in the historical database. Different operating data are automatically written into the database. At the same time, the model is iteratively optimized and automatically selects the best matching operating data to realize an automatic control system for different materials, different conveyors, and different moisture contents.

[0036] The working principle of this utility model is as follows:

[0037] Combination Figure 2 As shown, after starting operation, the moisture detector 100, belt adhesion detector 400, and control device 500 start working, performing moisture content detection and belt adhesion detection, calling the database, and determining the frequency and valve opening. When belt adhesion detection is performed, if adhesion is detected, the PID adjusts the frequency or valve opening. When moisture content detection is performed, it checks whether the moisture content deviation is less than the threshold. If the moisture content deviation is less than the threshold, the detection ends. If the moisture content deviation is greater than the threshold, it checks whether the moisture content has increased. If the moisture content has not increased, the PID adjusts the frequency or valve opening to continue detecting belt adhesion. When the moisture content increases, it checks the belt adhesion. If adhesion is detected, the PID adjusts the frequency or valve opening. If no adhesion is detected, it checks whether there is a close record in the database. If so, the process ends; otherwise, it is stored in the database, the operating frequency or valve opening is determined, and then the process ends.

[0038] This invention features automatic material moisture detection and adjusts the operating frequency or valve opening based on data from the belt conveyor adhesion detector, achieving closed-loop control and demonstrating a high degree of intelligence. Furthermore, this invention automatically collects data and dynamically adjusts operating parameters, enabling unmanned operation and avoiding over- or under-blowing issues, thus reducing energy consumption and worker maintenance. The moisture detector utilizes a non-contact sensor, which is simple to install and does not affect material conveying or belt safety, making it suitable for a wide variety of materials. The operating data is transmitted to a database for continuous iterative self-learning, providing foundational data for future operations.

[0039] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0040] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0041] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0042] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0043] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A dynamic detection and adjustment system for belt blowing effect, characterized in that, include: A moisture detector used to detect the moisture content of materials on the conveyor section of a conveyor belt; A head chute is installed on the side of the conveyor belt near the head roller; A purging device installed on the return section of the conveyor belt; The belt adhesion detector is located downstream of the purging device and is used to detect whether there is any material adhering to the conveyor belt after purging. A control device connected to the moisture detector and the belt adhesion detector.

2. The belt blowing effect dynamic detection and adjustment system according to claim 1, characterized in that, The control device includes a PLC control device.

3. The belt blowing effect dynamic detection and adjustment system according to claim 1, characterized in that, The purging device includes an air knife.

4. The belt blowing effect dynamic detection and adjustment system according to claim 3, characterized in that, The air knife is installed below the head roller. Pressurized air enters the air knife through a hose and is ejected at high speed from the air knife's outlet to blow away the adhered return material.

5. The belt blowing effect dynamic detection and adjustment system according to claim 1, characterized in that, The moisture detector is a non-contact infrared analyzer with a distance of 150mm to 400mm from the material and outputs a 4-20mA signal.

6. The belt blowing effect dynamic detection and adjustment system according to claim 1, characterized in that, The belt adhesion detector is a white light spot sensor that outputs a 4-20mA signal depending on the color.

7. The belt blowing effect dynamic detection and adjustment system according to claim 1, characterized in that, The return section of the conveyor belt is equipped with a return roller.

8. The belt blowing effect dynamic detection and adjustment system according to claim 1, characterized in that, The belt adhesion detector needs to be calibrated. The data of the belt adhesion detector should be calibrated periodically when the belt is free of material adhesion to determine the data signal value of the belt adhesion detector when the belt is free of material adhesion.

9. The belt blowing effect dynamic detection and adjustment system according to claim 1, characterized in that, The control device uses PID control to adjust the operating frequency or valve opening by changing the proportional coefficient Kp, integral coefficient Ki, and derivative coefficient Kd based on the data collected by the belt material adhesion detector.

10. The belt blowing effect dynamic detection and adjustment system according to claim 1, characterized in that, After the moisture detector detects data, it reads operating parameters from the database. The database needs to be iteratively optimized. The moisture detector's data is compared with the data stored in the historical database. Different operating data are automatically written into the database. At the same time, the model is iteratively optimized and automatically selects the best matching operating data to realize an automatic control system for different materials, different conveyors, and different moisture contents.

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