Intelligent anti-sticking and removing system and method for vibrating screen

Abstract

The application discloses an intelligent vibration screen anti-sticking and removing system and method, and belongs to the technical field of material screening equipment. The intelligent vibration screen anti-sticking and removing system comprises a vibrating screening device, a heating device, a temperature sensor, a visual detection device and a PLC control system. The vibrating screening device comprises a screen body, a screen mesh and a vibrating motor are arranged in the screen body, the heating device is arranged on the screen mesh, and the temperature sensor is arranged on the screen mesh. The visual detection device comprises a visual sensor and a processor, and the PLC control system is in communication connection with the temperature sensor, the processor and the vibrating motor. The application detects and analyzes the sticking rate of the screen mesh through the visual detection device, controls the temperature of the screen mesh and adjusts the vibration frequency of the vibrating motor through the PLC control system, prevents the screen mesh from being blocked, plays a role in anti-sticking in the production process, and can automatically clean the stuck materials after production. The automatic control and self-adaptive processing of the equipment are realized, manual labor is reduced, and the screening efficiency of the material is improved.

Description

Technical Field

[0001] This invention relates to the field of material screening equipment technology, and more specifically to an intelligent vibrating screen anti-sticking and de-sticking system and method. Background Technology

[0002] Vibrating screens are used in sand and gravel production to screen stones of different sizes and also have the function of removing mud and dewatering. As a key piece of equipment in a sand and gravel production line, the screening efficiency of the vibrating screen directly affects the output of the entire production line.

[0003] The screening efficiency of vibrating screen mesh is often affected by moisture content and the moisture content of the material being screened. Cold steel wire mesh is easily clogged by damp, fine-particle materials, resulting in poor screening efficiency and the screen becoming saturated and unusable. The traditional method is to manually clean the screen using hammers, chains, and other grooving tools. This method not only increases the workload but is also inefficient.

[0004] Chinese invention patent application CN119958266A discloses a flange-type vibrator high-frequency vibration dehydration and desliming device, including a vibrating base, a motor frame, a vibrating body screening mechanism, and a pressure-type auxiliary vibration mechanism. The pressure-type auxiliary vibration mechanism includes a linkage mechanism, a compression mechanism, a heat conduction mechanism, a pressure relief mechanism, and a heating mechanism. The heating mechanism includes an iron rod, a heating coil, a connecting cylinder, and a guide port. In use, the heating coil heats the iron rod, and the increased temperature of the iron rod heats the air inside the hot air chamber. The hot air chamber heats the heat-conducting copper pipe connected to the connecting cylinder through the guide port. The increased temperature of the heat-conducting copper pipe heats the material screened on the upper wall of the screen, accelerating the evaporation of moisture from the material surface and reducing the likelihood of material sticking to the screen.

[0005] Although the above patents disclose the use of heating mechanisms to heat the material being screened on the upper screen to reduce the likelihood of material sticking to the screen, these patents cannot automatically control the heating mechanism or vibration frequency based on the degree of material sticking on the screen during production. This makes them inconvenient to use and can easily lead to low screening efficiency and increased power consumption. Furthermore, many screening devices rely primarily on manual labor for cleaning up sticky materials after production, increasing the workload. Summary of the Invention

[0006] This invention provides an intelligent vibrating screen anti-sticking and de-sticking system and method, the main purpose of which is to overcome the shortcomings of existing screening equipment in production or after production, such as the inability to perform intelligent control based on the sticking and clogging of materials on the screen.

[0007] The present invention adopts the following technical solution:

[0008] An intelligent vibrating screen anti-sticking and de-sticking system includes a vibrating screening device, a heating device, a temperature sensor, a vision inspection device, and a PLC control system. The vibrating screening device includes a screen body inclinedly mounted on a frame, a screen mesh and a vibrating motor for driving the screen mesh to vibrate within the screen body. The heating device is located on the screen mesh for heating the screen mesh, and the temperature sensor is also located on the screen mesh. The vision inspection device includes a vision sensor for acquiring images of the material on the screen mesh and a processor for identifying and analyzing the images. The temperature sensor and the processor are respectively communicatively connected to the PLC control system, and the PLC control system is also communicatively connected to the vibrating motor.

[0009] Preferably, the heating device includes a heating transformer and a heating cable, the heating cable being connected to the heating transformer, the heating cable being fixed to the side of the screen and arranged along the extension direction of the screen.

[0010] In a preferred embodiment, the temperature sensor is disposed on the side of the screen.

[0011] In a preferred embodiment, the screen is provided with a plurality of vibrating beams spaced apart at the bottom along its extension direction, and each vibrating beam is fixed with a vibrating motor.

[0012] The present invention also provides an intelligent method for preventing and removing adhesion from a vibrating screen, which employs the above-mentioned intelligent vibrating screen anti-adhesion and anti-adhesion system, including a production anti-adhesion mode and a post-production adhesion removal mode.

[0013] In the anti-sticking production mode, the vision inspection device collects images of the material on the screen in real time and analyzes the screen's sticking status, then transmits the data to the PLC control system. The PLC control system determines whether the screen's screening efficiency and output meet the requirements. If not, it coordinates and controls the heating device to heat the screen's temperature and the vibration frequency of the vibrating motor until the screening efficiency and output meet the requirements.

[0014] In the postpartum declogging mode, the visual inspection device collects images of the screen and analyzes the clogging situation of the screen, and then transmits them to the PLC control system. When it is necessary to clean the clogging, the PLC control system controls the heating device to heat the temperature of the screen and the vibration frequency of the vibration motor to clean the clogging on the screen until the clogging rate of the screen reaches the set value.

[0015] Furthermore, the aforementioned PLC control system is equipped with a PLC database, which stores a control table for vibrating screen production parameters in the anti-sticking production mode and a table for vibrating screen cleaning parameters in the post-production cleaning mode.

[0016] In a preferred embodiment, the above-mentioned vibrating screen production parameter control table includes material name, size, moisture content, adhesion characteristics, screening efficiency, and output; the vibrating screen cleaning parameter table includes material name, moisture content, adhesion characteristics, existing clogging rate, and clogging rate after cleaning.

[0017] In a preferred embodiment, when it is necessary to clean the sticky material in the postpartum cleaning mode, the PLC control system first controls the heating device to heat the screen to temperature T, and then turns on the vibration motor to perform high-frequency, high-frequency and low-frequency variable frequency operations to clean the sticky material on the screen.

[0018] As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following advantages:

[0019] 1. The intelligent vibrating screen anti-sticking and de-sticking system of this invention includes a heating device on the screen mesh to heat it, remove moisture, and reduce the moisture content of the screened material. A temperature sensor monitors the heating temperature of the screen mesh in real time, while a visual inspection device monitors the real-time dynamics of the screening process and the degree of screen clogging after screening. This invention uses a visual inspection device to detect and analyze the screen clogging rate, and then a PLC control system controls the heating device to adjust the screen mesh temperature, combined with adjusting the vibration frequency of the vibrating motor, thereby preventing screen clogging. It plays an anti-sticking role during production and automatically cleans the clogging material after production. This invention enables automated control and adaptive processing of the equipment, making the equipment more intelligent and environmentally friendly, reducing manual labor, and improving material screening efficiency.

[0020] 2. The intelligent anti-sticking and de-sticking method for vibrating screens of the present invention includes a production anti-sticking mode and a post-production cleaning mode. In the production anti-sticking mode, a visual inspection device and a PLC control system coordinate the temperature of the heating device on the screen and the vibration frequency of the vibrating motor, thereby enabling the vibrating screen to achieve the required screening efficiency and output. In the post-production cleaning mode, the visual inspection device first assesses the screen's clogging status, then adjusts the temperature of the heating device on the screen and the vibration frequency of the vibrating motor to clean the clogging material from the screen until the clogging rate reaches the set value. This anti-sticking and de-sticking method intelligently prevents clogging of the vibrating screen and automatically cleans clogging materials, improving material screening efficiency and ease of use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the intelligent vibrating screen anti-sticking and de-sticking system of the present invention.

[0022] Figure 2 This is a schematic diagram of the internal structure of the vibrating screening equipment of the present invention. Detailed Implementation

[0023] The following is a reference to the appendix. Figure 1 Specific embodiments of the present invention will be described below. Many details are described below to provide a comprehensive understanding of the invention; however, those skilled in the art can implement the invention without these details. Well-known components, methods, and processes will not be described in detail hereafter.

[0024] An intelligent vibrating screen anti-sticking and de-sticking system, referring to Figure 1 and Figure 2 The system includes a vibrating screening device 1, a heating device, a temperature sensor 30, a vision inspection device, and a PLC control system. The vibrating screening device 1 includes a screen body 10 inclinedly mounted on a frame. Inside the screen body 10 is a screen mesh 11 and a vibrating motor 12 that drives the screen mesh 11 to vibrate. Specifically, several vibrating beams 13 are spaced apart along the bottom of the screen mesh 11 in its extending direction, and a vibrating motor 12 is fixedly mounted on each vibrating beam 13. The vibrating motor 12 can achieve high-frequency, high-frequency, and low-frequency vibration modes to control the vibration of the screen mesh 11 in different modes, thereby better cleaning the screen mesh of materials that are stuck to it.

[0025] The aforementioned heating device is installed on the screen mesh for heating the screen mesh 11, and includes a heating transformer 21 and a heating cable 22. The heating cable 22 is connected to the heating transformer 21 and is fixed to the side of the screen mesh 11 and arranged along the extending direction of the screen mesh 11. For convenient heating, the screen mesh 11 is preferably made of a metal material with high thermal conductivity.

[0026] The temperature sensor 30 is located on the side of the screen 11, and a patch-type temperature sensor is preferably used.

[0027] The aforementioned visual inspection device includes a visual sensor 41 for acquiring images of materials on the screen and a processor for image recognition and analysis. The visual sensor 41 is a visual camera, mounted on the inclined upper end of the screen body 10, with its lens aimed at the screen 11. The visual camera acquires images of the materials on the screen 11 in real time, then transmits them to the processor. After processing such as grayscale removal, the processor analyzes the changes in material content within a unit of time, thus determining the screen clogging rate or screening efficiency.

[0028] The temperature sensor 30 and the processor are respectively connected to the PLC control system, which is also connected to the vibration motor 12. This invention uses a visual inspection device to detect and analyze the clogging rate of the screen, then uses the PLC control system to control the heating device to heat the screen 11, and adjusts the vibration frequency of the vibration motor 12 to prevent clogging.

[0029] The above-mentioned intelligent vibrating screen anti-sticking and de-sticking system includes anti-sticking mode during production and post-production de-sticking mode.

[0030] In the anti-sticking production mode, the vision inspection device collects images of the material on the screen in real time and analyzes the screen's sticking status, then transmits the data to the PLC control system. The PLC control system determines whether the screen's screening efficiency and output meet the requirements. If not, it coordinates and controls the heating device to heat the screen's temperature and the vibration frequency of the vibrating motor until the screening efficiency and output meet the requirements.

[0031] In the postpartum declogging mode, the visual inspection device collects images of the screen and analyzes the clogging situation of the screen, and then transmits them to the PLC control system. When it is necessary to clean the clogging, the PLC control system controls the heating device to heat the temperature of the screen and the vibration frequency of the vibration motor to clean the clogging on the screen until the clogging rate of the screen reaches the set value.

[0032] In the postpartum cleaning mode, when it is necessary to clean the sticky material, the PLC control system can first control the heating device to heat the screen to temperature T, and then turn on the vibration motor to make the vibration motor perform high-frequency, high-frequency and low-frequency variable frequency operations to clean the sticky material on the screen.

[0033] The aforementioned PLC control system is equipped with a PLC database, which stores the production parameter control table for vibrating screens in anti-sticking mode and the de-sticking parameter table for vibrating screens in post-production de-sticking mode. The vibrating screen production parameter control table includes material name, size, moisture content, adhesion characteristics, screening efficiency, and output; while the vibrating screen de-sticking parameter table includes material name, moisture content, adhesion characteristics, existing clogging rate, and post-cleaning clogging rate.

[0034] For different materials, small-batch production is conducted first to understand the sticking characteristics of different materials. Then, various parameters are input into the PLC database. During production, the parameters in the PLC database can be directly called and the control time can be input to quickly achieve the desired anti-sticking effect.

[0035] The intelligent vibrating screen anti-sticking and de-sticking system of this invention can also adaptively adjust according to the actual production situation. By analyzing the screen clogging situation, it can intelligently adjust various parameters of the anti-sticking system. Production personnel can also manually input relevant data of new materials into the PLC control system as data in the PLC database for direct recall in future production.

[0036] The above PLC control system coordinates and stores data, making it convenient for future operators to use and achieving "one-click cleaning" and "one-click anti-sticking".

[0037] The above are merely specific embodiments of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial modifications made to the present invention using this concept shall be considered as infringing upon the protection scope of the present invention.

Claims

1. An intelligent method for preventing and removing sticking material from a vibrating screen, employing an intelligent vibrating screen anti-sticking and de-sticking system. The vibrating screen anti-sticking and de-sticking system includes a vibrating screening device and a PLC control system. The vibrating screening device includes a screen body inclinedly mounted on a frame, with a screen mesh and a vibrating motor driving the screen mesh vibration within the screen body. The intelligent vibrating screen anti-sticking system further includes a heating device, a temperature sensor, and a visual inspection device. The heating device is located on the screen mesh for heating the screen mesh, and the temperature sensor is also located on the screen mesh. The visual inspection device includes a visual sensor for acquiring images of the material on the screen mesh and a processor for identifying and analyzing the images. The temperature sensor and the processor are respectively communicatively connected to the PLC control system, and the PLC control system is also communicatively connected to the vibrating motor. The method is characterized by: Vibrating screen anti-sticking and de-sticking methods include production anti-sticking mode and post-production de-sticking mode. In the anti-sticking production mode, the vision inspection device collects images of the material on the screen in real time and analyzes the screen's sticking status, then transmits the data to the PLC control system. The PLC control system determines whether the screening efficiency and output of the screen meet the requirements. If not, it coordinates and controls the heating device to heat the screen temperature and the vibration frequency of the vibrating motor until the screening efficiency and output meet the requirements. In the postpartum declogging mode, the visual inspection device collects images of the screen and analyzes the clogging situation of the screen, and then transmits them to the PLC control system. When it is necessary to clean the clogging, the PLC control system controls the heating device to heat the temperature of the screen and the vibration frequency of the vibration motor to clean the clogging on the screen until the clogging rate of the screen reaches the set value.

2. The intelligent vibrating screen anti-sticking and de-sticking method as described in claim 1, characterized in that: The heating device includes a heating transformer and a heating cable. The heating cable is connected to the heating transformer and is fixed to the side of the screen and arranged along the extension direction of the screen.

3. The intelligent vibrating screen anti-sticking and de-sticking method as described in claim 1, characterized in that: The temperature sensor is located on the side of the screen.

4. The intelligent vibrating screen anti-sticking and de-sticking method as described in claim 1, characterized in that: The screen is equipped with several vibrating beams spaced apart at the bottom along its extension direction, and each vibrating beam is fixed with a vibrating motor.

5. The intelligent vibrating screen anti-sticking and de-sticking method as described in claim 1, characterized in that: The PLC control system is equipped with a PLC database, which stores the production parameter control table for vibrating screen in anti-sticking mode and the post-production anti-sticking parameter table for vibrating screen in anti-sticking mode.

6. The intelligent vibrating screen anti-sticking and de-sticking method as described in claim 5, characterized in that: The vibrating screen production parameter control table includes material name, size, moisture content, adhesion characteristics, screening efficiency, and output; the vibrating screen cleaning parameter table includes material name, moisture content, adhesion characteristics, existing clogging rate, and clogging rate after cleaning.

7. The intelligent vibrating screen anti-sticking and de-sticking method as described in claim 1, characterized in that: When cleaning the screen in the postpartum cleaning mode, the PLC control system first controls the heating device to heat the screen to temperature T, and then turns on the vibration motor to perform high-frequency, high-frequency and low-frequency variable frequency operations to clean the screen of the sticky material.

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