An intelligent stale garbage screening system with a dewatering function and a control method thereof

Abstract

The present application relates to stale garbage comprehensive treatment technical field, specifically to a kind of stale garbage intelligent screening system with dewatering function and control method thereof.The system of the present application includes: feeding system, large piece sorting system, dewatering system, fine screening system, magnetic separation system, conveying system, monitoring system and PLC control system.The intelligent control method of the present application includes the following steps: a. presetting the state information of stale garbage;B.wetness sensor and monitoring system real-time acquisition stale garbage state information;C.PLC control system receives the real-time state information collected and compares the preset state information in step a after through intelligent module or video recognition, generates result signal;D.according to the result signal of step c, generate and send corresponding control instruction, real-time adjust each system variable frequency motor parameter.The present application effectively reduces the labor cost, improves the current garbage humidity large screening effect is poor and the deficiency of guaranteeing the safety and efficiency of screening.

Description

Technical Field

[0001] This invention relates to the field of comprehensive treatment technology for aged waste, specifically to an intelligent screening system for aged waste with dehydration function and its control method. Background Technology

[0002] Accumulated waste, also known as stockpile waste, mainly refers to waste that has been landfilled for a long time. Currently, stockpile waste in landfills is mainly disposed of through screening and volume reduction methods. To achieve screening efficiency and effectiveness, manual sorting is usually incorporated into the screening process to separate large or difficult-to-handle clumps of material. Simultaneously, the production line requires manual inspection to prevent material accumulation or blockage, and periodic shutdowns for cleaning are necessary when needed. This process is not only inefficient and labor-intensive, but also compromises operational safety. Stockpile waste also presents the problem of high moisture content, making it difficult to screen. During the rainy season, it is even more difficult to dry and dehydrate, severely impacting screening efficiency and even causing equipment blockages and production line shutdowns.

[0003] Therefore, this invention proposes an intelligent screening system for aged waste with dehydration function, which can achieve intelligent and precise screening, effectively reduce the moisture content of waste, reduce labor costs, improve screening effect, and ensure production safety and efficiency. Summary of the Invention

[0004] This invention discloses an intelligent screening system for aged waste with dehydration function and its control method, comprising a feeding system, a bulk sorting system, a dehydration system, a fine screening system, a magnetic separation system, a conveying system, a monitoring system, and a PLC control system. The feeding system sequentially feeds the aged waste into the bulk sorting system, dehydration system, fine screening system, and magnetic separation system for screening via the conveying system. The bulk sorting system is equipped with a humidity sensor; after intelligent screening, materials with higher humidity are conveyed to the dehydration system. The dehydration system consists of three stages: a squeezing system, a stirring system, and a drying system, which can quickly reduce the moisture content of the material and improve the screening effect. The monitoring system can collect real-time image data of the aged waste and process it through the video recognition module in the PLC control system to generate corresponding control commands to automate the screening production line.

[0005] The present invention specifically employs the following technical means:

[0006] The system of this invention includes: a feeding system, a dewatering system, a large-item sorting system, a fine screening system, a magnetic separation system, a conveying system, a monitoring system, and a PLC control system; wherein, the feeding system is a chain conveyor capable of carrying heavy and large materials. The large-item sorting system is a large-item screening device capable of separating heavy and large materials. The magnetic separation system is a device equipped with an iron remover capable of separating magnetic materials. The conveying system is a material conveyor belt conveyor with anti-deviation properties.

[0007] Furthermore, the dehydration system includes an extrusion system, a stirring system, and a drying system. The extrusion system is a physical dehydration device that uses mechanical extrusion for dehydration. The stirring system is a stirring device equipped with an automatic dehydrating agent addition device. The dehydrating agent reacts chemically with the material during the stirring process to dehydrate it. The large amount of heat generated by the reaction is connected to the drying system through a heat-conducting air duct. The drying system uses the heat transferred by the blower and the heat-conducting air duct to physically dry and dehydrate the material.

[0008] Furthermore, the fine screening system consists of a multi-stage sieve and a multi-stage air separation system. The multi-stage sieve is composed of various sieve stages, and the multi-stage air separation system is composed of various air separation systems. Each sieve stage and each air separation system are connected through the conveying system.

[0009] Furthermore, the monitoring system is a camera and imaging system, wherein the camera system is installed on each piece of equipment in the screening production line, and the PLC control system is an intelligent control terminal equipped with an intelligent module and a video recognition module.

[0010] Furthermore, the feeding system, the large-item sorting system, the extrusion system, the mixing system, the drying system, the multi-stage sieve, the multi-stage air separation system, the magnetic separation system, and the conveying system are all equipped with variable frequency motors. The large-item sorting system, the extrusion system, the mixing system, and the drying system are also equipped with humidity sensors. Furthermore, the signal output terminals of the monitoring system and the humidity sensors are connected to the signal input terminals of the PLC control system, and the signal output terminals of the PLC control system are connected to the signal receiving terminals of the variable frequency motors in each system.

[0011] Furthermore, the conveying system is used to connect various systems. The feeding end of the feeding system receives materials from the feeding machinery. The discharging end of the feeding system is connected to the feeding end of the large-item sorting system. The discharging end of the undersize material of the large-item sorting system is equipped with a distributor. The distributor is connected to the feeding end of the extrusion system and the feeding end of the multi-stage screen. The discharging end of the extrusion system is connected to the feeding end of the mixing system. The discharging end of the mixing system is connected to the feeding end of the drying system. The discharging end of the drying system is connected to the feeding end of the multi-stage screen. The discharging end of the multi-stage screen is connected to the feeding end of the multi-stage air separation system.

[0012] Furthermore, the oversize discharge end of the large-item sorting system is connected to the large-item material collection area, the undersize discharge end of the multi-stage screen is connected to the humus collection area, the multi-stage air separation system is provided with a heavy material discharge end and a light material discharge end, wherein the heavy material discharge end is connected to the heavy material collection area, the magnetic separation system is provided above the connected conveying system, the separated magnetic material is transferred to the magnetic material collection area by the conveying system, and the light material discharge end of the multi-stage air separation system is connected to the light material collection area.

[0013] Furthermore, the present invention also provides a control method for an intelligent screening system for aged waste with dehydration function, comprising the following steps:

[0014] a. Preset the status information of aged waste;

[0015] b. Humidity sensors and monitoring systems collect real-time status information of aged waste;

[0016] c. The PLC control system receives the collected real-time status information and analyzes it through the intelligent module or video recognition module. After comparing it with the preset status information in step a, it generates a result signal.

[0017] d. Based on the result signal from step c, generate and send corresponding control commands to adjust the parameters of the variable frequency motors in each system in real time.

[0018] Furthermore, the status information of aged waste includes: humidity, content of each component of aged waste, clumping of aged waste, and congestion during the transportation of aged waste.

[0019] Furthermore, the humidity sensor is used to collect the humidity of the aged waste, and the monitoring system is used to collect the content of each component of the aged waste, the clumping situation, and the congestion situation. Furthermore, the components of the aged waste include: inorganic aggregates and lightweight materials.

[0020] Furthermore, step c includes the following four cases:

[0021] Case 1: When the PLC system receives the collected humidity information, the intelligent module analyzes it and compares it with the preset value. If it is greater than the preset value, a high humidity signal is generated and the process proceeds to step d. If it is less than or equal to the preset value, a low humidity signal is generated and the process proceeds to step d.

[0022] Scenario 2: When the PLC system receives the collected information on the composition of aged waste, the intelligent module analyzes it and compares it with the preset value. If it is greater than the preset value, a signal of high light content is generated and the process proceeds to step d. If it is less than or equal to the preset value, a signal of high inorganic aggregate content is generated and the process proceeds to step d.

[0023] Case 3: When the PLC system receives the collected information on the clumping of aged waste, the intelligent module analyzes it and compares it with the preset value. If it is greater than the preset value, a clumping signal is generated and the process proceeds to step d. If it is less than or equal to the preset value, a non-clumping signal is generated and the process proceeds to step d.

[0024] Scenario 4: When the PLC system receives the collected information on congestion caused by stale garbage, the intelligent module analyzes it and compares it with the preset value. If it is greater than the preset value, a congestion signal is generated and the process proceeds to step d. If it is less than or equal to the preset value, a non-congestion signal is generated and the process proceeds to step d.

[0025] The beneficial effects of this invention are at least as follows: the "physical-chemical-physical" three-stage dehydration system effectively reduces the moisture content of waste, solving the problem of high moisture content and difficulty in handling existing waste; the monitoring system equipped with a video recognition module can convert material video signals into PLC-controllable intelligent signals, realizing unmanned screening, reducing labor costs, and ensuring production safety and efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the screening process of an intelligent screening system for aged waste with dehydration function according to a specific embodiment of the present invention.

[0027] Figure 2 This is a process flow diagram of the intelligent control system of an intelligent screening system for aged waste with dehydration function according to a specific embodiment of the present invention.

[0028] Figure 3 This is a flowchart of the intelligent control method of an intelligent screening system for aged waste with dehydration function according to a specific embodiment of the present invention.

[0029] Figure 4 This is a flowchart of step c, case 1, in the intelligent control method of an intelligent screening system for aged waste with dehydration function according to a specific embodiment of the present invention;

[0030] Figure 5 This is a flowchart of step c, case 2, in the intelligent control method of an intelligent screening system for aged waste with dehydration function according to a specific embodiment of the present invention;

[0031] Figure 6 This is a flowchart of step c, case 3, in the intelligent control method of an intelligent screening system for aged waste with dehydration function according to a specific embodiment of the present invention;

[0032] Figure 7 This is a flowchart of step c, case 4, in the intelligent control method of an intelligent screening system for aged waste with dehydration function according to a specific embodiment of the present invention. Detailed Implementation

[0033] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. The accompanying drawings are for illustrative purposes only, representing only schematic diagrams, not actual physical images, and should not be construed as limiting the present invention. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. For those skilled in the art, the omission of certain well-known structures and their descriptions in the drawings is understandable.

[0034] like Figure 1 and 2 As shown in the figure, an intelligent screening system for aged waste with dehydration function provided by an embodiment of the present invention includes: a feeding system, a dehydration system, a large-item sorting system, a fine screening system, a magnetic separation system, a conveying system, a monitoring system, and a PLC control system.

[0035] In this embodiment, the feeding system is a heavy-duty chain conveyor; the large-item sorting system is a bar screen; the magnetic separation system is a magnetic separator; and the conveying system is an anti-deviation belt conveyor.

[0036] The dehydration system includes an extrusion system, a stirring system, and a drying system. The extrusion system is a physical dehydration device that uses mechanical extrusion to dehydrate. The stirring system is a stirring device equipped with an automatic dehydrating agent addition device. The dehydrating agent reacts chemically with the material during the stirring process to dehydrate it. The large amount of heat generated by the reaction is connected to the drying system through a heat-conducting air duct. The drying system uses the heat transferred by the blower and the heat-conducting air duct to physically dry and dehydrate the material.

[0037] The fine screening system consists of a primary drum screen, a secondary drum screen, a star-shaped screen, a primary air separator, a secondary air separator, and a tertiary air separator. Furthermore, the primary drum screen is connected to the primary air separator, the secondary drum screen is connected to the secondary air separator, and the star-shaped screen is connected to the tertiary air separator.

[0038] The intelligent control system in this embodiment of the invention mainly includes: a humidity sensor, a monitoring system, and a PLC control system. The humidity sensor is installed in the large-item sorting system and the dehydration system, and its signal output terminal is connected to the signal receiving terminal of the PLC control system. The monitoring system includes a camera system and an imaging system, and its signal output terminal is connected to the signal receiving terminal of the PLC control system. The PLC control system includes an intelligent module and a video recognition module. The intelligent module is used to analyze and process the humidity data returned by the humidity sensor, and the video recognition module is used to analyze and process the image data returned by the monitoring system. Based on the analysis results, the PLC control system generates control commands and sends them to the feeding system, the large-item sorting system, the dehydration system, the fine screening system, the magnetic separation system, and the conveying system. Intelligent control is achieved by changing the operating parameters of the variable frequency motor.

[0039] Intelligent control methods such as Figure 3 As shown, the intelligent control steps of an intelligent screening system for aged waste with dehydration function disclosed in this invention are as follows:

[0040] a. Preset the status information of aged waste;

[0041] b. Humidity sensors and monitoring systems collect real-time status information of aged waste;

[0042] c. The PLC control system receives the collected real-time status information and analyzes it through the intelligent module or video recognition module. After comparing it with the preset status information in step a, it generates a result signal.

[0043] d. Based on the result signal from step c, generate and send corresponding control commands to adjust the parameters of the variable frequency motors in each system in real time.

[0044] Step c includes four cases, such as Figure 4-7 As shown, the details are as follows:

[0045] Case 1: When the PLC system receives the collected humidity information, the intelligent module analyzes it and compares it with the preset value. If it is greater than the preset value, a high humidity signal is generated and the process proceeds to step d. If it is less than or equal to the preset value, a low humidity signal is generated and the process proceeds to step d.

[0046] Scenario 2: When the PLC system receives the collected information on the composition of aged waste, the intelligent module analyzes it and compares it with the preset value. If it is greater than the preset value, a signal of high light content is generated and the process proceeds to step d. If it is less than or equal to the preset value, a signal of high inorganic aggregate content is generated and the process proceeds to step d.

[0047] Case 3: When the PLC system receives the collected information on the clumping of aged waste, the intelligent module analyzes it and compares it with the preset value. If it is greater than the preset value, a clumping signal is generated and the process proceeds to step d. If it is less than or equal to the preset value, a non-clumping signal is generated and the process proceeds to step d.

[0048] Scenario 4: When the PLC system receives the collected information on congestion caused by stale garbage, the intelligent module analyzes it and compares it with the preset value. If it is greater than the preset value, a congestion signal is generated and the process proceeds to step d. If it is less than or equal to the preset value, a non-congestion signal is generated and the process proceeds to step d.

[0049] Reference Figure 1 The present invention provides an intelligent screening system for aged waste with dehydration function, the general operating steps of which are as follows:

[0050] The feeding machinery transports the aged waste to the feed end of the heavy-duty chain conveyor. After a short-distance transport by the chain conveyor, the material enters the feed end of the bar screen.

[0051] The bar screen separates materials into oversize and undersize items. The oversize items are transported by belt conveyor to the oversize material collection area for temporary storage. When the undersize items pass through the humidity sensor in the oversize sorting system, humidity data is collected and sent to the PLC control system. After analysis and processing by the intelligent module, if the humidity is greater than the preset value, the PLC control system will send an instruction to adjust the distributor to further separate the undersize items into high-humidity undersize items and low-humidity undersize items.

[0052] In the extrusion system, large, high-humidity undersize materials are rapidly dehydrated through a mechanical extrusion process. The materials with most of the water removed then enter the mixing system.

[0053] In the mixing system, the large, high-humidity undersize material is further mixed thoroughly with the dehydrating agent, and the material after mixing and dehydration is transported to the drying system.

[0054] The drying system relies on the heat circulating in the blower and stirring system to achieve dehydration. The high-humidity large-sized undersize material is dehydrated through a three-stage process of "physical-chemical-physical" and then becomes low-humidity large-sized undersize material, which enters the first-stage drum screen for further screening.

[0055] The primary drum screen separates large, low-moisture material into primary oversize and primary undersize. The primary undersize then enters the secondary drum screen for further sieving. The primary undersize then enters the primary air separator and is separated into primary heavy undersize and primary light oversize. The primary light oversize is transferred to the light material collection area for temporary storage, while the primary heavy undersize is separated into magnetic materials by a magnetic separator and then transferred to the heavy material collection area for temporary storage. The separated magnetic materials are transferred to the magnetic material collection area for temporary storage.

[0056] The secondary drum screen further separates the primary undersize material into secondary oversize material and secondary undersize material. The secondary undersize material enters the star disk screen for further screening. The secondary oversize material is separated into secondary heavy undersize material and secondary light oversize material by the secondary air separator. The secondary light oversize material is transferred to the light material collection area for temporary storage, while the secondary heavy undersize material is separated into magnetic materials by the magnetic separator and then transferred to the heavy material collection area for temporary storage. The separated magnetic materials are transferred to the magnetic material collection area for temporary storage.

[0057] The star-shaped screen further separates the secondary undersize into tertiary oversize and tertiary undersize. The tertiary undersize is transferred to the humus collection area for temporary storage. The tertiary oversize is separated into tertiary heavy undersize and tertiary light oversize by a three-stage air separator. The tertiary light oversize is transferred to the light material area for temporary storage, while the tertiary heavy undersize is separated into magnetic materials by a magnetic separator and then transferred to the heavy material collection area for temporary storage. The separated magnetic materials are transferred to the magnetic material collection area for temporary storage.

[0058] This embodiment provides an intelligent screening system and control method for aged waste with dehydration function. The intelligent control of the screening production line is realized through a monitoring system and a PLC control system, which reduces labor costs. The three-stage dehydration system effectively solves the practical problem of poor screening effect of high-humidity waste, and improves the screening effect and screening efficiency.

[0059] The above embodiments are for illustrative purposes only and are not intended to limit the invention. Those skilled in the art can make various changes and modifications without departing from the scope of the invention. Therefore, all equivalent technical solutions should also fall within the scope of the invention.

Claims

1. A control method of a stale garbage intelligent screening system having a dehydration function, characterized by, The stale garbage intelligent screening system with a dewatering function comprises: The feeding system is a heavy chain plate machine, which is suitable for carrying and conveying heavy and bulky materials; the large piece sorting system is a bar screen, which is suitable for sorting bulky materials; the under-screen material outlet of the large piece sorting system is provided with a material distributor; the dewatering system comprises an extrusion system, a stirring system and a drying system; the magnetic separation system is a magnetic separator, which is suitable for sorting magnetic materials; the conveying system is a anti-deviation belt conveyor, which is suitable for conveying materials; The monitoring system comprises a camera system and an imaging system, the camera system is installed on each device of the screening production line, and the PLC control system is an intelligent control terminal comprising an intelligent module and a video recognition module; The feeding system, the large piece sorting system, the extrusion system, the stirring system, the drying system, the fine screening system, the magnetic separation system and the conveying system are all provided with variable frequency motors; the large piece sorting system, the extrusion system, the stirring system and the drying system are also provided with humidity sensors, the signal output ends of the monitoring system and the humidity sensors are connected with the signal input end of the PLC control system, and the signal output end of the PLC control system is connected with the signal receiving end of the variable frequency motor of each system; When the large piece under-screen material of the bar screen passes through the humidity sensor in the large piece sorting system, the humidity data is collected and sent to the PLC control system, and after intelligent module analysis and processing, if the humidity is greater than the preset value, the PLC control system will send an instruction to adjust the material distributor to further separate the large piece under-screen material into high-humidity large piece under-screen material and low-humidity large piece under-screen material; the high-humidity large piece under-screen material is converted into low-humidity large piece under-screen material after dewatering and continues to be screened; The stale garbage intelligent screening system with a dewatering function comprises the following steps: a. presetting the state information of stale garbage; b. collecting the state information of stale garbage in real time by the humidity sensor and the monitoring system; c. the PLC control system receives the collected real-time state information, compares the real-time state information with the preset state information in step a through the intelligent module or video recognition, and generates a result signal; step c includes the following four cases: When the PLC system receives the collected humidity information, the intelligent module analyzes and compares it with the preset value, if it is greater than the preset value, a high-humidity signal is generated and transferred to step d, if it is less than or equal to the preset value, a low-humidity signal is generated and transferred to step d; When the PLC system receives the collected component content information of stale garbage, the intelligent module analyzes and compares it with the preset value, if it is greater than the preset value, a high-lightweight material content signal is generated and transferred to step d, if it is less than or equal to the preset value, a high-inorganic aggregate content signal is generated and transferred to step d; When the PLC system receives the collected stale garbage agglomeration information, the intelligent module analyzes and compares it with the preset value, if it is greater than the preset value, an agglomeration signal is generated and transferred to step d, if it is less than or equal to the preset value, an unagglomeration signal is generated and transferred to step d; When the PLC system receives the collected stale garbage congestion information, the intelligent module analyzes and compares with the preset value, if greater than the preset value, a congestion signal is generated and transferred to step d, if less than or equal to the preset value, a non-congestion signal is generated and transferred to step d; d. According to the result signal of step c, the corresponding control instruction is generated and sent, and the parameters of each system variable frequency motor are adjusted in real time; The state information of the stale garbage includes humidity, content of each component of the stale garbage, agglomeration of the stale garbage, and congestion of the stale garbage during transportation; wherein the components of the stale garbage include inorganic aggregates and light materials; The humidity of the stale garbage is collected by a humidity sensor; the content of each component of the stale garbage, the agglomeration and the congestion information are collected by a monitoring system.

2. The control method of the stale garbage intelligent screening system with dehydration function according to claim 1, characterized in that, The extrusion system is a physical dewatering device which dewatering by mechanical extrusion; the stirring system is provided with an automatic dewatering agent adding device; the heat generated by the reaction is connected with the drying system by a heat conduction air pipe, and the stirring system physically dries and dewatering the materials by the heat transferred by the air blowing device and the heat conduction air pipe.

3. The control method of the stale garbage intelligent screening system with dehydration function according to claim 1, characterized in that, The fine screening system includes a multi-stage screen and a multi-stage air separation system, the multi-stage screen includes each stage screen, and the multi-stage air separation system includes each stage air separation system, each stage screen and each stage air separation system are connected through the conveying system.

4. The control method of the stale garbage intelligent screening system with dehydration function according to claim 1, characterized in that, The feeding system, the large piece sorting system, the dewatering system, the fine screening system and the magnetic separation system are connected through the conveying system; the feeding end of the feeding system receives the materials of the feeding machine, the discharge end of the feeding system is connected with the feeding end of the large piece sorting system, the distributors are respectively connected with the feeding end of the extrusion system and the feeding end of the multi-stage screen, the discharge end of the extrusion system is connected with the feeding end of the stirring system, the discharge end of the stirring system is connected with the feeding end of the drying system, the discharge end of the drying system is connected with the feeding end of the multi-stage screen, and the discharge end of the multi-stage screen is connected with the feeding end of the multi-stage air separation system.

5. The control method of the stale garbage intelligent screening system with dewatering function according to claim 4, characterized in that, The oversize material discharge end of the large piece sorting system is connected with the large piece material collection area, the undersize material discharge end of the multi-stage screen is connected with the humus soil collection area, the multi-stage air separation system is provided with a heavy material discharge end and a light material discharge end, the heavy material discharge end is connected with the heavy material collection area, the magnetic separation system is arranged above the conveying system, the separated magnetic materials are transferred to the magnetic material collection area by the conveying system, and the light material discharge end of the multi-stage air separation system is connected with the light material collection area.

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