Suspended solid intercepting system and method

Abstract

The suspended solid intercepting system comprises a machine shell, and a hollowed-out rotating cylinder and an arc-shaped intercepting piece are arranged in the machine shell; at least two intercepting net plates are mounted on the hollow rotating cylinder body at intervals, and scraping plates are arranged at the outer ends of the intercepting net plates and used for scraping intercepted objects on the arc-shaped intercepting pieces; a spiral conveying device is arranged in the hollow rotating cylinder body and is used for conveying and squeezing intercepted objects; an elastic vibration piece and a flushing device are arranged on the machine shell, the elastic vibration piece is used for enabling the intercepting net plate which rotationally passes through to generate vibration so as to fall off intercepted objects, and the flushing device is used for cleaning the intercepting net plate; and the control center is used for adjusting working parameters of the hollow rotating cylinder, the spiral conveying device and the flushing device. Tiny suspended solids are accurately intercepted, the interception efficiency is greatly improved, and it is guaranteed that the subsequent treatment process is stable; suspended solids are prevented from being attached to and accumulated on the interception screen plate, the system can adapt to different water quality and water quantity, and the system maintainability is improved.

Description

Technical Field

[0001] This invention relates to the field of suspended solids filtration technology, and more specifically, to a suspended solids interception system and method. Background Technology

[0002] Pretreatment is the first step in wastewater treatment, and bar screens are one of the key pieces of equipment in this process. Bar screens are generally the first and most important piece of equipment in the first structure of a wastewater treatment plant. They can automatically and continuously intercept and remove floating debris in the water, protecting the normal operation of subsequent pumps.

[0003] Wastewater treatment plants typically include 2-3 screens in their pretreatment process: the first screen is a coarse screen, with a bar spacing of 16mm-25mm, used to protect the pumps; the second screen is a fine screen, used after the pumps and before grit removal, with a bar spacing of 1.5mm-10mm, to further ensure the stable operation of subsequent treatment structures and equipment; wastewater treatment plants using membrane technology and aerated biological filters need to safely separate fine particles to avoid clogging of the membrane modules and filter media, and generally also install a third screen, which is an ultrafine screen, with bar spacing generally less than or equal to 1mm.

[0004] Currently, wastewater treatment plants in China generally use two screens. The first coarse screen has a bar spacing of 15-20 mm, while the second fine screen has a bar spacing of 3-5 mm. In actual operation, it has been found that subsequent scum and sediment accumulation are quite serious, affecting the efficiency of the subsequent biological reactor. Furthermore, if wastewater treatment plants attempt to upgrade by reducing the bar spacing of the fine screen to improve its interception efficiency, they face the dilemma that the current mainstream fine screens require a large cross-sectional area, while the existing fine screen channels have insufficient cross-sectional area.

[0005] Therefore, the existing technology has problems and needs further improvement and development. Summary of the Invention

[0006] (I) Purpose of the invention: In order to solve the problems existing in the prior art, the purpose of the present invention is to provide a system and method with a small flow area that can improve the interception efficiency of suspended solids.

[0007] (II) Technical Solution: To solve the above-mentioned technical problems, this technical solution provides a suspended solid interception system, including, The housing contains a hollowed-out rotating cylinder and an arc-shaped interceptor. At least two intercepting mesh plates are installed at intervals on the hollow rotating cylinder. The outer end of the intercepting mesh plate is provided with a scraper for scraping off the trapped material on the arc-shaped intercepting component. The hollow rotating cylinder is equipped with a spiral conveying device for conveying and pressing the retained material; The housing is equipped with an elastic vibrating element and a flushing device. The elastic vibrating element is used to cause the rotating intercepting mesh plate to vibrate so as to dislodge the trapped material. The flushing device is used to clean the intercepting mesh plate. The control center is used to adjust the operating parameters of the hollow rotating cylinder, the spiral conveyor, and the rinsing device.

[0008] In the suspended solid interception system, the interception mesh is a square structure, and there are 2 to 8 pieces, which are evenly spaced along the circumference of the hollow rotating cylinder.

[0009] In the suspended solid interception system, the gap width of the arc-shaped interceptor is ≤1mm, and the mesh diameter of the interception mesh plate is adapted to the gap of the arc-shaped interceptor.

[0010] In the suspended solid interception system, the elastic vibrating element is installed at the top of the housing and contacts the inner edge of the interception mesh plate. When the interception mesh plate rotates to the top position with the hollow rotating cylinder, the elastic vibrating element is compressed, generates elastic deformation, and releases vibration.

[0011] The suspended solids interception system includes a flushing device comprising at least two rows of high-pressure water nozzles, which are installed inside the outer frame of the housing and facing the surface of the interception mesh. The control center controls the opening timing and flushing duration of the high-pressure water nozzles based on the rotational speed of the hollow rotating cylinder or the liquid level difference before and after the mesh.

[0012] In the suspended solid interception system, the interception mesh plate is fixedly connected to the non-perforated area of ​​the perforated rotating cylinder via a smooth steel plate. The inner edge of the interception mesh plate is provided with a stainless steel slide rail, which assists the suspended solids on the interception mesh plate to slide into the perforated rotating cylinder. The scraper is made of wear-resistant rubber or metal and is in contact with the surface of the arc-shaped interceptor.

[0013] The suspended solids interception system is described above, wherein the housing is a sealed structure, a detachable maintenance cover is provided on the top, and a deodorization interface is provided on the side, the deodorization interface being connected to the deodorization system.

[0014] The suspended solid interception system further includes a historical operating condition storage unit and a parameter adaptive unit in its control center. The historical operating condition storage unit is used to store the historical optimal parameter templates of the interception system under different operating scenarios. The templates contain multi-dimensional correlation data that characterize the operating status. The parameter adaptive unit obtains the real-time operating parameter set of the current interception system, performs multi-dimensional similarity calculation between the real-time operating parameter set and the reference parameter set in the historical optimal parameter template, determines the historical operating condition with the highest matching degree, and adjusts the operating parameters of the current interception system based on the parameters corresponding to the historical operating condition with the highest matching degree.

[0015] The suspended solid interception system, wherein the real-time operating parameter set and the reference parameter set both include a first parameter subset and a second parameter subset, wherein the first parameter subset is a set of parameters characterizing the characteristics of the external environment, and the second parameter subset is a set of parameters characterizing the operating status of the equipment; The multi-dimensional similarity calculation includes calculating the similarity between the first parameter subset of the real-time running parameter set and the first parameter subset of the reference parameter set, and between the second parameter subset of the real-time running parameter set and the second parameter subset of the reference parameter set, and then merging the results of the two into a comprehensive similarity according to a preset rule.

[0016] The suspended solid interception system, wherein the similarity calculation between the first parameter subset of the real-time operating parameter set and the first parameter subset of the reference parameter set employs a numerical similarity algorithm, including: For each parameter in the first parameter subset of the preprocessed real-time running parameter set, calculate its deviation from the corresponding parameter in the first parameter subset of the reference parameter set; Based on the weight of each parameter's impact on the operation of the interception system, the deviation is weighted and summed to obtain the first dimension of similarity.

[0017] The suspended solid interception system, wherein the similarity calculation between the second parameter subset of the real-time operating parameter set and the second parameter subset of the reference parameter set employs a vector similarity algorithm, including: The second parameter subset of the preprocessed real-time running parameter set and the second parameter subset of the reference parameter set are respectively represented as multi-dimensional vectors; Calculate the directional consistency metric and / or distance proximity metric between the multidimensional vector corresponding to the second parameter subset of the real-time running parameter set and the multidimensional vector corresponding to the second parameter subset of the reference parameter set; The directional consistency metric and / or distance proximity metric are normalized and converted to a preset similarity range. Based on the correlation characteristics between parameters in the second parameter subset of the real-time running parameter set, at least one of the following methods is dynamically selected to determine the second dimension similarity: When there is a strong correlation between parameters, the normalized directional consistency metric is used as the second dimension of similarity. When there is a weak correlation between parameters, the normalized distance proximity metric is used as the second dimension of similarity. When there is a mixed correlation between parameters, the normalized directional consistency metric and distance proximity metric are fused by a preset fusion rule to obtain the second dimension of similarity.

[0018] The suspended solid interception system, wherein the preset fusion rule includes dynamic weight fusion, specifically: Define a fusion coefficient β, which ranges from 0 to 1. The fusion coefficient is used to adjust the weight ratio of the first dimension similarity and the second dimension similarity. When the system detects that the intensity of external environmental disturbance exceeds the preset threshold, the value of β increases, and it preferentially relies on the first dimension of similarity. When the system detects that the device's operating status deviates from the initial calibration value, the value of β decreases, and it preferentially relies on the second dimension of similarity. The overall similarity S = β × first dimension similarity + (1-β) × second dimension similarity.

[0019] The suspended solid interception system further includes a fault early warning unit in the control center. The fault early warning unit collects the operating characteristic data of the equipment in real time, extracts typical fault feature templates from the historical database, compares the real-time operating characteristic data with the typical fault feature templates for similarity, and generates a fault early warning signal and triggers a preset response strategy when the similarity reaches a preset threshold.

[0020] A method for intercepting suspended solids, applied to the aforementioned suspended solids interception system, includes the following steps: The raw sewage flows through a fluid channel equipped with an interceptor screen, driving the interceptor screen to rotate. The scraper at the outer end of the interceptor screen contacts the surface of the arc-shaped interceptor, removing the suspended solids trapped by the arc-shaped interceptor. When the rotating interception mesh plate rotates to the preset position, the elastic vibrating element causes the interception mesh plate to vibrate, causing the suspended solids attached to the surface of the interception mesh plate to fall into the hollow rotating cylinder. The spiral conveyor inside the hollow rotating cylinder transports the detached suspended solids to the discharge port, and dehydrates the suspended solids during the conveying process before discharging them. The control center monitors the operating status parameters of the interceptor mesh or the resistance parameters of the fluid channel. When these parameters reach a preset threshold, the flushing device is activated to clean the interceptor surface of the mesh.

[0021] (III) Beneficial effects: The present invention provides a suspended solids interception system and method that accurately intercepts tiny suspended solids, greatly improves interception efficiency, and ensures the stability of subsequent processing procedures; prevents suspended solids from adhering to and accumulating on the interception screen; the system can adapt to different water quality and quantity, accurately assess the matching degree of working conditions, flexibly cope with complex environments, and always maintain the optimal operating state; it can detect and handle potential faults in advance, reduce downtime and maintenance costs, and improve system maintainability. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the vertical cross-sectional structure of a suspended solid interception system according to the present invention; Figure 2 This is a schematic diagram of the horizontal cross-sectional structure of a suspended solid interception system according to the present invention; Figure 3 This is a schematic diagram of the hollow rotating cylinder structure of a suspended solid interception system according to the present invention; Figure 4 This is a schematic cross-sectional view of the interception mesh plate of a suspended solid interception system according to the present invention; Figure 5 This is a schematic diagram of the structure of an elastic vibrating component in a suspended solid interception system according to the present invention; 1-Grate channel; 2-Casing; 3-Arc-shaped interceptor; 4-Interception mesh plate; 4-1-Scraper; 4-3-Slide rail; 5-Hollowed rotating cylinder; 5-1-Support ring; 6-Screw conveyor; 7-Elastic vibrating component; 7-1-Rotating shaft fixing seat; 7-2-Rotating shaft; 7-3-Vibrating rod; 7-4-Connecting rod; 7-5-Compression spring; 7-6-Vibrating component fixing seat; 7-7-Adjusting screw; 8-Flushing device; 9-Gear motor; 10-Motor. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to preferred embodiments. More details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention can obviously be implemented in many other ways different from those described herein. Those skilled in the art can make similar extensions and derivations based on actual application situations without departing from the spirit of the present invention. Therefore, the scope of protection of the present invention should not be limited by the content of this specific embodiment.

[0024] The accompanying drawings are schematic diagrams of embodiments of the present invention. It should be noted that these drawings are for illustrative purposes only and are not drawn to scale, and should not be construed as limiting the actual scope of protection of the present invention.

[0025] A suspended solids interception system is used in the pretreatment stage of wastewater treatment plants, such as Figure 1As shown, the device includes: a housing 2, inside which is a perforated rotating cylinder 5 and an arc-shaped interceptor 3; at least two interceptor plates 4 are installed at intervals on the perforated rotating cylinder 5, and the outer end of the interceptor plate 4 is provided with a scraper 4-1 for scraping off the trapped material on the arc-shaped interceptor 3; a spiral conveying device 6 is provided inside the perforated rotating cylinder 5 for conveying and pressing the trapped material; an elastic vibrating element 7 and a rinsing device 8 are provided on the housing 2, the elastic vibrating element 7 is used to make the rotating interceptor plate 4 vibrate to dislodge the trapped material, and the rinsing device 8 is used to clean the interceptor plate 4; and a control center, which is connected to the perforated rotating cylinder 5, the spiral conveying device 6 and the rinsing device 8 respectively, for adjusting the working parameters of the perforated rotating cylinder 5, the spiral conveying device 6 and the rinsing device 8.

[0026] The casing 2 is a sealed rectangular structure, measuring 3m × 1.5m × 2.5m (length × width × height), and can be made of steel. The casing 2 has a removable inspection cover on the top and an odor control interface on the side, which is connected to the odor control system. Specifically, the casing 2 has two removable inspection covers on the top, each measuring 0.8m × 0.6m. A DN100 odor control interface is pre-installed on the side, which is connected to the plant's biological filter odor control system via a flange. The bottom of the casing 2 is sealed to a concrete channel, forming a wastewater flow channel.

[0027] The hollow rotating cylinder 5 is a cylindrical body with a diameter of 800mm and a length of 2.8m. The outer surface of the hollow rotating cylinder 5 has evenly distributed hollow holes with a diameter of 50mm, and the opening ratio of the hollow holes is 60%. The material of the hollow rotating cylinder 5 can be 304 stainless steel or other corrosion-resistant materials; no specific limitation is made here. Both ends of the hollow rotating cylinder 5 are connected to the side walls of the housing 2 via bearings. The bearings are connected to the motor 10, which is a variable frequency motor with a power of 5.5kW and a speed range of 0.5~2r / min, supporting forward and reverse rotation. Support rings 5-1 are evenly distributed on the side of the hollow rotating cylinder 5; there can be six support rings 5-1. Figure 3 As shown.

[0028] The intercepting mesh plate 4 has a square structure, with 2 to 8 pieces, evenly spaced along the circumference of the hollow rotating cylinder 5. The intercepting mesh plate 4 is fixedly connected to the non-hollowed-out area of ​​the hollow rotating cylinder 5 via a smooth steel plate. The inner edge of the intercepting mesh plate 4 is provided with a stainless steel slide rail 4-3. The scraper 4-1 is made of wear-resistant rubber or metal and is in contact with the surface of the arc-shaped interceptor 3. Figure 2 , Figure 4As shown, specifically, the intercepting mesh plate 4 is a square sieve-type mesh plate, specifically using 6 square sieve-type mesh plates, each with a size of 1.2m × 0.6m. The mesh openings are square, and the aperture is adapted to the gap between the arc-shaped interceptor 3 bars, specifically 0.8mm. The intercepting mesh plate 4 is welded to the non-hollowed-out area of ​​the hollowed-out rotating cylinder 5 by a 3mm thick smooth steel plate. The inner edge of the intercepting mesh plate 4 is welded with a 304 stainless steel slide rail 4-3, which is 50mm wide and 10mm high. The outer end of the intercepting mesh plate 4 is vulcanized and fixed with a 50mm wide wear-resistant rubber scraper 4-1. The scraper 4-1 has a Shore hardness of 70 and a contact pressure of 0.2MPa with the surface of the arc-shaped interceptor 3. The slide 4-3 is a rectangular steel plate with a smooth surface, used to intercept the suspended solids intercepted by the interception net plate 4. When the interception net plate 4 passes the elastic vibrator 7, the interception net plate 4 vibrates, and the suspended solids fall off the interception net plate 4, slide through the slide 4-3, and finally fall into the hollow rotating cylinder 5.

[0029] The width of the gap between the arc-shaped interceptor 3 bars is ≤1mm, and the mesh diameter of the interceptor plate 4 is adapted to the gap between the arc-shaped interceptor 3 bars. The arc-shaped interceptor 3 can be a 304 stainless steel arc-shaped grid plate with a radius of curvature of 1.2m, a bar gap of 0.8mm, a bar thickness of 3mm, and a lateral spacing of 10mm. It is fixed to the inside of the casing 2 with bolts and covers 80% of the sewage flow section.

[0030] The screw conveyor 6 is horizontally installed inside the hollow rotating cylinder 5. The central axis of the screw conveyor 6 coincides with the central axis of the hollow rotating cylinder 5. The screw diameter of the conveyor is 500mm, the pitch is 200mm, and the material is duplex stainless steel. The screw conveyor 6 is driven by an independent geared motor 9 with a power of 2.2kW and a conveying speed of 0.3m / s. The outlet end of the screw conveyor 6 is provided with a pressing section, where the pitch gradually and uniformly decreases to half of the original pitch, specifically 100mm, thereby reducing the moisture content of the screenings to below 65%.

[0031] The elastic vibrating element 7 is installed at the top of the housing 2 and contacts the inner edge of the intercepting mesh plate 4. When the intercepting mesh plate 4 rotates with the hollow rotating cylinder 5 to the top position of the housing 2, the elastic vibrating element 7 is compressed, generates elastic deformation, and releases vibration.

[0032] The elastic vibration element 7 is an adjusting spring. The adjusting spring is installed at the top of the housing 2 and contacts the inner edge of the intercepting mesh plate 4. When the intercepting mesh plate 4 rotates to the top position with the hollow rotating cylinder 5, the adjusting spring is compressed, generates elastic deformation, and releases vibration. Specifically, the elastic vibrating element 7 includes two sets of adjusting springs. The adjusting springs have a diameter of 12mm, a free length of 150mm, and a stiffness coefficient of 50N / mm. The two sets of adjusting springs are installed on the inner side of the top of the housing 2, 1.5m away from the central axis of the cylinder. The lower end of the adjusting spring contacts the stainless steel slide 4-3 on the inner edge of the intercepting mesh plate 4. When the intercepting mesh plate 4 rotates to the top position, the intercepting mesh plate 4 contacts the adjusting spring, and the speed of the intercepting mesh plate 4 decreases, creating a speed difference with the speed at the circumferential center. Since the torque of the hollow rotating cylinder 5 at the center of the intercepting mesh plate 4 is greater than the torque of the adjusting spring, the hollow rotating cylinder 5 pushes the adjusting spring to deform. The intercepting mesh plate 4 passes through the adjusting spring. At this time, the rotational resistance of the intercepting mesh plate 4 decreases, and the speed increases to the initial speed. During this process, the suspended solids on the intercepting mesh plate 4 fall off.

[0033] Another specific embodiment of the elastic vibrating element 7 is as follows: Figure 5 As shown, it may also include a rotating shaft fixing seat 7-1, a rotating shaft 7-2, a vibration rod 7-3, a connecting rod 7-4, a compression spring 7-5, a vibrating element fixing seat 7-6, and an adjusting screw 7-7.

[0034] The vibrating element fixing seat 7-6 is fixed to the outer wall of the housing 2. The adjusting screw 7-7 passes through the vibrating element fixing seat 7-6 and is connected to the compression spring 7-5. The end of the compression spring 7-5 away from the vibrating element fixing seat 7-6 is connected to the connecting rod 7-4 via a rotating shaft. The connecting rod 7-4 passes through the housing 2 and is connected to the rotating shaft fixing seat 7-1 fixed to the inner wall of the housing 2 via the rotating shaft 7-2. The end of the connecting rod 7-4 away from the housing 2 is connected to the vibrating rod 7-3 via the rotating shaft 7-2. When the vibrating rod 7-3 rotates counterclockwise around the rotating shaft 7-2, the connecting rod 7-4 rotates counterclockwise around the rotating shaft 7-2 under the action of friction, compressing the compression spring 7-5. The height of the rotating shaft fixing seat 7-1 is less than the distance between the scraper 4-1 and the housing 2. The end of the vibration rod 7-3 away from the housing 2 can contact the scraper 4-1 and / or the intercepting mesh plate 4. The maximum contact length between the end of the vibration rod 7-3 away from the housing 2 and the scraper 4-1 and / or the intercepting mesh plate 4 is less than or equal to 2cm.

[0035] When the intercepting mesh plate 4 rotates to the upper vertical position, it is resisted by the vibrating rod 7-3, causing the intercepting mesh plate 4 to deform. The edge linear velocity decreases rapidly, creating a velocity difference with the circumferential center velocity. Since the torque of the central rotating cylinder of the intercepting mesh plate 4 is greater than the torque of the vibrating rod 7-3, after the intercepting mesh plate 4 deforms, it pushes the vibrating rod 7-3 to generate circumferential motion around the rotating shaft 7-2. This causes the intercepting mesh plate 4 to break free from the resistance of the vibrating rod 7-3, and the edge linear velocity quickly recovers to the circumferential center velocity. It also generates elastic force to shake off the suspended solids attached to the surface. The suspended solids enter the spiral conveying device 6 in the central hollow rotating cylinder 5 and are discharged. The rotating shaft 7-2 is fixed inside the outer casing via a rotating shaft fixing seat 7-1. Multiple vibration rods 7-3 are installed on the rotating shaft according to usage requirements and are connected to a compression spring 7-5 via a connecting rod 7-4. The torque of the compression spring is transmitted to the vibration rods 7-3. The torque of the compression spring is adjusted by an adjusting screw 7-7, thereby affecting the velocity difference between the edge linear velocity and the circumferential center of the intercepting mesh plate 4. This ensures that the intensity of the suspended solids falling is a function of the force of the compression spring 7-5. The adjusting screw 7-7 is fixed outside the outer casing via a vibration component fixing seat 7-6. When one of the intercepting mesh plates 4 passes the vibration rod 7-3, the vibration rod 7-3 quickly returns to its original position under the force of the compression spring 7-5, and sequentially generates the same resistance value for each intercepting mesh plate 4, creating a velocity difference and shaking off the suspended solids attached to its surface.

[0036] The flushing device 8 includes at least two rows of high-pressure water nozzles, which are installed inside the outer frame of the housing 2 and face the surface of the interceptor mesh plate 4. The control center controls the activation timing and flushing duration of the high-pressure water nozzles based on the rotational speed of the hollow rotating cylinder 5 or the liquid level difference before and after the screen. Specifically, two rows of high-pressure water nozzles, 12 in each row and spaced 200mm apart, are symmetrically installed inside the outer frame of the housing 2. The high-pressure water nozzles are connected to a high-pressure cleaning pump. The control center activates the flushing device 8 based on the relationship between the liquid level difference before and after the screen and a first flushing threshold, or a first rotational speed threshold of the hollow rotating cylinder 5. The first flushing threshold and the first rotational speed threshold are preset values; the first flushing threshold can be 0.3mm, and the first rotational speed threshold can be 1.5r / min. The flushing device 8 is activated when the liquid level difference before and after the screen is greater than or equal to the first flushing threshold, or when the rotational speed of the hollow rotating cylinder 5 is greater than or equal to the first rotational speed threshold. The single flushing duration of the flushing device 8 can be 10s, with an interval of 30min.

[0037] The control center can be a PLC controller, and includes a liquid level difference sensor, a speed encoder, and an electromagnetic flow meter. The control center supports manual / automatic mode switching. In automatic mode, the cylinder speed is adjusted according to the inlet water flow rate, and the screw conveyor 6 is synchronized with the cylinder speed, as well as the flushing device 8. This is triggered when the liquid level difference exceeds the standard.

[0038] The liquid level difference sensor is installed on the front and rear sides of the bar screen, that is, the inlet and outlet sides of the bar screen channel 1. Specifically, it is located on the side wall of the pipe or channel through which sewage flows outside the casing 2, and in the upstream and downstream areas of the interceptor screen 4. The liquid level difference sensor measures the water level difference before and after the bar screen. The control center determines the degree of blockage of the interceptor screen 4 based on the water level difference before and after the bar screen. The greater the liquid level difference, the more serious the blockage. The control center then initiates high-pressure flushing or adjusts the cylinder rotation speed according to the degree of blockage of the interceptor screen 4.

[0039] The speed encoder is installed at the end of the central drive shaft of the hollow rotating cylinder 5, or connected to the output shaft of the motor 10 via a coupling. The speed encoder rotates synchronously with the central drive shaft. The speed encoder collects the rotation speed signal of the cylinder in real time and feeds the rotation speed signal back to the control center. The control center adjusts the output frequency of the variable frequency motor according to the rotation speed signal to achieve precise speed control.

[0040] The electromagnetic flowmeter is installed on the inlet main of the suspended solids interception system, or on a straight section of the sewage channel upstream of the bar screen, located on the pipeline after the coarse bar screen and before this interception system. The electromagnetic flowmeter measures the sewage flow rate entering the system. The control center dynamically adjusts the rotation speed of the hollow rotating cylinder 5 according to the changes in sewage flow rate. When the flow rate increases, the rotation speed is increased to enhance the interception efficiency and ensure that the equipment matches the inlet load.

[0041] This section describes the process by which a suspended solids interception system intercepts suspended solids in wastewater.

[0042] Raw wastewater enters the casing 2 through the bar screen channel 1. Six intercepting screen plates 4 rotate clockwise with the perforated rotating cylinder 5. The 0.8mm aperture on the surface of the intercepting screen plates 4 intercepts suspended solids in the water, such as fibers, hair, and small plastic particles. Any trace suspended solids that are not intercepted are secondary intercepted when they flow through the arc-shaped interceptor 3. The rubber scraper 4-1 at the outer end of the intercepting screen plate 4 rotates with the cylinder, scraping the screen residue on the surface of the arc-shaped interceptor 3 into the water, where it is then retrieved by subsequent screen plates.

[0043] When the intercepting screen plate 4 rotates to the top position, the inner edge stainless steel slide 4-3 compresses the adjusting spring. The vibration released by the elastic deformation of the spring causes the screenings attached to the surface of the screen plate to fall off and slide along the inclined surface of the intercepting screen plate 4 into the hollow rotating cylinder 5. The screw conveyor 6 pushes the screenings to the outlet, and after being dewatered in the pressing section, they are sent to the screenings treatment system in the plant through the slag discharge pipe.

[0044] When the liquid level difference before and after the screen reaches the first flushing threshold, or when the cylinder speed increases to the first speed threshold, the control center starts the high-pressure water nozzles. The two rows of nozzles alternately flush the rotating screen surface in a fan shape to remove the blockage in the mesh. The flushing wastewater enters the subsequent treatment unit along with the sewage.

[0045] The sealed design of the casing 2 creates internal negative pressure, allowing odorous gases to enter the factory's deodorization system, such as a biological filter + activated carbon adsorption, through the side deodorization interface. Periodically open the top inspection cover and use the stainless steel slide rail 4-3 to disassemble the screen for maintenance, replace the scraper 4-1, or clean the mesh.

[0046] With dual interception via a combination of a 4-panel screen and an arc-shaped interceptor 3, and a 0.8mm gap between the bars, the suspended solids interception efficiency reaches over 92%, a 40% improvement compared to traditional fine grids with 3-5mm gaps. The synergistic effect of vibration deslagging and high-pressure flushing reduces the clogging rate of the 4-panel screen to below 5%, and allows for continuous operation of the equipment for ≥720 hours. The sealed structure, combined with the deodorization system, ensures that the surrounding odor concentration is ≤0.5ppm.

[0047] The control center also includes a historical operating condition storage unit and a parameter adaptive unit. The historical operating condition storage unit is used to store the historical optimal parameter templates of the interception system under different operating scenarios. The templates contain multi-dimensional correlation data characterizing the operating status, such as the rotation speed of the hollow rotating cylinder 5, the pressing pressure of the screw conveyor 6, the opening threshold of the rinsing device 8 and the corresponding inlet water flow rate, suspended solids concentration, and liquid level difference.

[0048] The parameter adaptive unit acquires the real-time operating parameter set of the current interception system, performs multi-dimensional similarity calculations between the real-time operating parameter set and the reference parameter set in the historical optimal parameter template, determines the historical operating condition with the highest matching degree, and adjusts the operating parameters of the current interception system based on the parameters corresponding to the historical operating condition with the highest matching degree. The real-time operating parameter set includes, but is not limited to, influent flow rate, suspended solids concentration, liquid level difference, cylinder rotation speed, and other equipment operating parameters. Specifically, the real-time operating parameter set is acquired as the target parameter set; the target parameter set is matched with the reference parameter set in the historical optimal parameter template, and the historical operating condition with the highest similarity is determined by calculating the attribute similarity and label similarity between the two. Attribute similarity includes flow rate matching degree and liquid level difference change rate, and label similarity includes operating condition labels high load and low load; based on the optimal parameters corresponding to the historical operating condition with the highest similarity, the operating parameters of the current interception system, such as cylinder rotation speed and flushing frequency, are automatically adjusted.

[0049] Both the real-time operating parameter set and the reference parameter set include a first parameter subset and a second parameter subset. The first parameter subset is a set of parameters characterizing external environmental features, i.e., a physical parameter subset, including influent flow rate, suspended solids concentration, water temperature, pH value, etc. The second parameter subset is a set of parameters characterizing the equipment operating status, i.e., an equipment parameter subset, including the rotational speed of the hollow rotating cylinder 5, the pressing pressure of the screw conveyor 6, the liquid level difference, the operating frequency of the rinsing device 8, etc.

[0050] The multi-dimensional similarity calculation includes calculating the similarity between the first parameter subset of the real-time running parameter set and the first parameter subset of the reference parameter set, and between the second parameter subset of the real-time running parameter set and the second parameter subset of the reference parameter set, and then merging the results of the two into a comprehensive similarity according to a preset rule, such as by weighted summation of the two results to obtain the comprehensive similarity.

[0051] Before multi-dimensional similarity calculation, the parameter adaptation unit preprocesses the real-time running parameter set and the reference parameter set, including: Each parameter is standardized or normalized to eliminate dimensional differences. A normalization interval is defined for each parameter: parameters in the first subset are assigned to the interval [0,1], e.g., influent flow rate 0~1000 m³ / h corresponds to 0~1; parameters in the second subset are assigned to the interval [-1,1], e.g., rotational speed deviation -50%~+50% corresponds to -1~1. The parameters of the real-time operating parameter set and the reference parameter set are then transformed to their corresponding intervals using a linear transformation formula.

[0052] These are the parameter values ​​of the first parameter subset after normalization, i.e., the physical parameters; The parameter values ​​for the real-time running parameter set; The minimum valid parameter value of the first parameter subset in the reference parameter set; The maximum valid parameter value is the first parameter subset of the reference parameter set.

[0053]

[0054] These are the parameter values ​​of the second parameter subset after normalization, i.e., the device parameters; The parameter values ​​are for the real-time running parameter set; The reference parameter value is the optimal value of this device parameter in the historical optimal parameter template; It is 50% of the reference parameter value for the maximum permissible deviation range.

[0055] Abnormal parameter values ​​can be corrected, specifically by using a moving average method to smooth out instantaneous fluctuations in data and ensure data validity.

[0056] The similarity calculation between the first parameter subset of the real-time running parameter set and the first parameter subset of the reference parameter set uses a numerical similarity algorithm, including: For each parameter in the first parameter subset of the preprocessed real-time running parameter set, calculate its deviation from the corresponding parameter in the first parameter subset of the reference parameter set; Based on the weight of each parameter's impact on the operation of the interception system, the deviation is weighted and summed to obtain the first dimension of similarity.

[0057] Specifically, this includes assigning preset weighting factors to physical parameters in the first parameter subset of the preprocessed real-time operating parameter set, such as influent flow rate. weighting factor w f =0.4, weighting factor w of suspended solids concentration c c =0.3, weighting factor w for water temperature t t =0.15, weighting factor w of pH value p p =0.15; Calculate the absolute deviation of each parameter: , And so on; physical similarity is calculated by weighted summation. That is, the first dimension of similarity:

[0058] The influence weight is a preset value, determined based on sensitivity analysis of historical operating data, and can be modified through the input unit of the control center.

[0059] The similarity calculation between the second parameter subset of the real-time running parameter set and the second parameter subset of the reference parameter set uses a vector similarity algorithm, including: The second parameter subset of the preprocessed real-time running parameter set and the second parameter subset of the reference parameter set are respectively represented as multi-dimensional vectors; Calculate the directional consistency metric and / or distance proximity metric between the multidimensional vector corresponding to the second parameter subset of the real-time running parameter set and the multidimensional vector corresponding to the second parameter subset of the reference parameter set; The directional consistency metric and / or distance proximity metric are normalized and converted to a preset similarity range. Based on the correlation characteristics between parameters in the second parameter subset of the real-time running parameter set, at least one of the following methods is dynamically selected to determine the second dimension similarity: When there is a strong correlation between parameters, the normalized directional consistency metric is used as the second dimension of similarity. When there is a weak correlation between parameters, the normalized distance proximity metric is used as the second dimension of similarity. When there is a mixed correlation between parameters, the normalized directional consistency metric and distance proximity metric are fused by a preset fusion rule to obtain the second dimension of similarity.

[0060] Specifically, Construct a real-time vector from the device parameters in the first parameter subset of the normalized real-time operating parameter set. Construct a reference vector from the device parameters in the second parameter subset of the reference parameter set. Equipment parameters: rotation speed n, pressing pressure P, liquid level difference h, rinsing frequency f; Calculate the vector dot product:

[0061] Calculate the vector magnitude: , Similarly; When there is a strong correlation between parameters, the device similarity S 设备 That is, the second dimension of similarity: ; When there is a weak correlation between parameters, the similarity in the second dimension is obtained by calculating the proximity through Euclidean distance and other methods.

[0062] The preset fusion rules include dynamic weight fusion, specifically: Define a fusion coefficient β, which ranges from 0 to 1. Here, we take 0.3 to 0.7 as an example. The fusion coefficient is used to adjust the weight ratio of the first dimension similarity and the second dimension similarity. When the system detects that the intensity of external environmental disturbance exceeds the preset threshold, such as a short-term fluctuation of water flow > 30%, the value of β is increased to β=0.7, and the system preferentially relies on the first dimension of similarity. When the system detects that the device's operating status deviates from the initial calibration value, such as when the cumulative running time exceeds the maintenance cycle, the value of β decreases to β=0.3, and the second dimension of similarity is relied upon first. Under other operating conditions, β = 0.5 (physical and equipment parameters are equally weighted). The overall similarity S = β × first dimension similarity + (1-β) × second dimension similarity.

[0063] The control center also includes a fault early warning unit. The fault early warning unit collects the operating characteristic data of the equipment in real time, extracts typical fault feature templates from the historical database, compares the real-time operating characteristic data with the typical fault feature templates for similarity, and generates a fault early warning signal and triggers a preset response strategy when the similarity reaches a preset first early warning threshold.

[0064] Operational characteristic data includes, but is not limited to, vibration characteristics of moving parts and load characteristics of the drive unit. Specifically, the vibration characteristics of the moving parts can be the vibration frequency data of the interceptor plate 4 obtained by the built-in sensor of the elastic vibrating element 7. The load characteristics of the drive unit can be the current data of the motor 10 of the hollow rotating cylinder 5. These operational characteristic data serve as the first element data. The typical fault characteristic template contains the correlation between characteristic data prior to the occurrence of the fault, such as fault characteristic data prior to the occurrence of typical faults like blockage of the interceptor plate 4 or bearing wear. This serves as the second element data.

[0065] The first element data is compared with the second element data in terms of similarity, including vibration spectrum similarity and current fluctuation similarity. Vibration spectrum similarity is calculated as the proportion of the 15Hz characteristic frequency, and current fluctuation similarity is calculated as the variance matching degree. When the similarity is greater than or equal to the first warning threshold, a fault warning signal is triggered and an enhanced flushing or shutdown maintenance command is automatically initiated. The specific value of the first warning threshold can be 85%.

[0066] The core data in the historical database comes from the operational records of the entire lifecycle of the interception system, including: Commissioning Phase: After the interception system is installed, baseline parameters collected under simulated different operating conditions are used as initial template data for subsequent comparisons. Different operating conditions include high / low influent flow rate and high / low suspended solids concentration. Baseline parameters include, for example, the vibration frequency of the interception screen 4 (15Hz±2Hz) and the no-load current of the motor 10 (10A±1A) during normal operation.

[0067] During the trial and daily operation phases: Real-time collected normal operation data and fault event data are preprocessed by the edge computing module and then stored in the database. Normal operation data includes the correlation between cylinder rotation speed, liquid level difference, flushing frequency and corresponding suspended solids removal rate; fault event data includes the vibration spectrum change when the interceptor plate 4 is blocked and the motor current fluctuation curve when the bearing is worn.

[0068] Manually labeled data: Maintenance personnel label historical fault events to identify their causes, creating a record linking fault type, characteristic data, and handling measures. This record is used to optimize fault characteristic templates. Examples of historical fault events include: interceptor mesh panel 4 jamming in month X of 2025, and motor overload in month Y of 2025.

[0069] The typical fault characteristic templates in the historical database contain associated data in the following dimensions: Fault type tags are used to quickly match fault scenarios, such as blockage of interceptor plate 4, bearing wear, scraper 4-1 failure, motor overload, etc. Characteristic data sequences show the changing trends of multiple parameters before the fault occurs. For example, when the interceptor plate 4 is blocked: the vibration frequency drops from 15Hz to 8Hz, while the liquid level difference increases from 0.1m to 0.3m, and the motor current increases from 12A to 18A; when the bearing is worn: the cylinder speed fluctuation rate increases from ±0.1r / min to ±0.5r / min, and the motor noise increases from 65dB to 85dB. Parameter association rules, including mathematical relationships between different parameters, are used to construct a multi-dimensional early warning model. For example, when the SS concentration is greater than 500 mg / L and the liquid level difference increase rate is greater than 0.05 m / h, the risk of blockage of the interceptor plate 4 increases.

[0070] This section uses the blockage of the interceptor mesh panel 4 as an example to explain the workflow of the fault early warning unit.

[0071] Real-time data acquisition: The vibration frequency of the interception screen plate 4 is obtained through the vibration sensor (current value 8Hz), the water level difference between the front and rear is obtained through the liquid level difference sensor (current value 0.3m), and the motor current is obtained through the current sensor (current value 18A).

[0072] Template matching: retrieve the blockage feature template of the interception mesh plate 4 from the historical database. Typical features: vibration frequency 8Hz±1Hz, liquid level difference ≥0.3m, current 18A±2A. Calculate the similarity between the real-time data and the template. For example, the matching degree is 92%.

[0073] Threshold judgment: When the similarity is ≥ 85% of the first warning threshold, the blockage warning of the interceptor plate 4 is triggered, and the enhanced flushing and the cylinder speed increase are automatically started. The enhanced flushing is to extend the flushing time to 15s, and the cylinder speed increase is to increase the cylinder speed from 1r / min to 1.5r / min.

[0074] The flushing device 8 also includes a multi-factor weighted decision module. The decision module dynamically generates control commands by comprehensively analyzing the impact of multiple key parameters on flushing demand, so as to realize the precise start and stop of the flushing device 8 and the adjustment of operating parameters. This avoids over- or under-flushing caused by single parameter control, balances the cleaning effect of the interception screen 4 with water resources / energy consumption costs, and improves the economy and stability of the interception system operation.

[0075] The decision-making module includes: Define at least two key parameters that affect flushing requirements, and assign a preset weighting factor to each key parameter; for example, define the key parameters that affect flushing requirements as: liquid level difference, with a weighting factor of 0.4; cylinder rotation speed, with a weighting factor of 0.3; and influent suspended solids concentration, with a weighting factor of 0.3.

[0076] The current values ​​of each key parameter are collected in real time, the deviation of the key parameters is calculated, and a comprehensive control index is generated by combining the weighting factors. For example, the control center collects the values ​​of each parameter in real time, calculates the deviation of each parameter, such as the liquid level difference deviation = current liquid level difference / threshold 0.3m, and multiplies it with the corresponding weighting factor and sums them to obtain the comprehensive flushing demand index.

[0077] The operating parameters of the flushing device 8 are automatically adjusted according to the comprehensive control index, including but not limited to the start-up timing and running time. For example, when the comprehensive flushing demand index is ≥1.0, the flushing device 8 is automatically started, and the flushing time increases linearly with the index value, such as 10s for an index of 1.0 and 15s for an index of 1.5.

[0078] The decision-making module assigns a preset weighting factor to each key parameter, determined based on the degree of influence of each key parameter on the urgency of flushing requirements. Specific implementation methods include: Parameter impact assessment: By statistically analyzing historical operating data, the correlation between each key parameter and the blockage risk of the interceptor plate 4 is determined. For example, for every 0.1m increase in liquid level difference, the probability of blockage increases by 20%; for every 0.5r / min increase in rotation speed, the probability of blockage decreases by 10%. The higher the correlation, the greater the weight.

[0079] Examples of typical key parameters and weighting factors are shown in the table below.

[0080] Dynamic adjustment mechanism: The weighting factor can be modified through the input unit of the control center, or automatically updated according to the season and the degree of equipment aging. Automatic updates could include increasing the weight to 0.2 when the control center clock is in April-September or July-August, resulting in high suspended solids concentration; and increasing the liquid level difference weight to 0.7 after the interceptor screen 4 wears out. Specifically, when the scraper 4-1's adhesion pressure abnormally decreases, the vibration characteristic frequency shifts, the motor 10's load fluctuation increases, and / or shutdown for maintenance confirms that the interceptor screen 4 is worn, the liquid level difference weight is increased to 0.7.

[0081] The deviation of key parameters is calculated as the degree of difference between the current parameter value and the target threshold. It is used to quantify the correlation between a single key parameter and flushing requirements. The calculation steps are as follows: Define target thresholds: Set a safety threshold for each key parameter that does not require flushing, such as the liquid level difference threshold D0=0.3m and the velocity threshold N0=1.0r / min.

[0082] Calculate the absolute deviation: x 当前 The value is collected in real time, and x0 is the safety threshold; if Δx≤0, the deviation is 0 and no rinsing is required.

[0083] Normalization: Convert the absolute deviation into a dimensionless deviation, ranging from [0,1]. , where x max The maximum allowable critical value for the parameter, such as the liquid level difference x. max =0.6m, then the upper limit of the deviation is (0.6-0.3) / (0.6-0.3)=1.

[0084] Current liquid level difference D 当前 =0.45m, threshold D0=0.3m, maximum critical value D max =0.6m, .

[0085] A comprehensive control index is generated by combining weighting factors. The comprehensive control index is the weighted sum of the deviations of each key parameter and their corresponding weights. The formula is as follows: , The comprehensive control index ranges from [0,1], where 0 indicates no flushing is needed and 1 indicates maximum flushing intensity is required. For example, if the level difference deviation is 0.5 with a weight of 0.6 and the rotation speed deviation is 0.2 with a weight of 0.3, then the comprehensive control index = 0.5 × 0.6 + 0.2 × 0.3 = 0.3 + 0.06 = 0.36.

[0086] The operating parameters of the flushing device 8 are automatically adjusted according to the comprehensive control index. Specifically, the operating parameters of the flushing device 8 are adjusted in stages according to the value of the comprehensive control index. Tiered threshold settings: Low demand: Comprehensive control index <0.3, indicating no rinsing or short rinsing, short rinsing can be 5 seconds; Medium requirements: 0.3 ≤ comprehensive control index < 0.7, which is a regular flushing time of 10 seconds; High demand: Comprehensive control index ≥ 0.7. For enhanced rinsing, the interval can be 20 seconds, shortened by 50%.

[0087] This section provides an example illustrating how the operating parameters of the flushing device 8 are adjusted in stages based on the value of the comprehensive control index. When the comprehensive control index is 0.36, it is considered medium demand. The control center sends an instruction to the flushing device 8: turn on the high-pressure water nozzle and flush continuously for 10 seconds, with an interval of 30 minutes. If the overall control index rises to 0.8, which indicates high demand, the instruction will be updated to: turn on all water taps and flush continuously for 20 seconds, with a 15-minute interval.

[0088] After rinsing, monitor the liquid level difference in real time. If the comprehensive control index drops below 0.2, reduce the weight of the corresponding parameter, such as reducing the liquid level difference weight from 0.6 to 0.5, to avoid over-rinsing.

[0089] The suspended solid interception system also includes a distributed collaborative control network, which includes a master node and at least two child nodes, each child node corresponding to an independent interception processing unit; the master node and the interception processing units of at least two child nodes together constitute the suspended solid interception system.

[0090] Each interception and processing unit has independent suspended solid interception capabilities, including basic components such as housing 2, hollow rotating cylinder 5, arc-shaped interception component 3, interception mesh plate 4, spiral conveyor device 6, elastic vibration component 7, and flushing device 8. It is also equipped with an independent control center for real-time monitoring and adjustment of the operating parameters of the interception and processing unit.

[0091] When any sub-node detects an abnormal operating state, it generates an abnormal state command and sends it to the master node. This command includes the sub-node's real-time operating data. Specifically, when the control center of any subsystem determines that its own interceptor screen 4 is blocked and the liquid level difference is ≥0.3m, it generates a blockage status command and sends this command along with a snapshot of its historical best operating parameters to the master node's control center. Each sub-node monitors the operating status of its own interception and processing unit in real time. The monitored parameters cover multiple key indicators, such as the rotational speed of the hollow rotating cylinder 5, the working pressure of the spiral conveyor 6, the opening frequency of the flushing device 8, the liquid level difference before and after the screen, and the concentration of suspended solids in the influent. When any sub-node detects that its own operating parameters exceed the preset normal range, it is determined that an abnormal operating state has occurred. For example, if a sub-node detects that the liquid level difference before and after the screen suddenly rises to 0.5m, far exceeding the normal threshold of 0.3m, and at the same time the rotational speed of the hollow rotating cylinder 5 fluctuates significantly, this sub-node immediately generates an abnormal state command. The status anomaly command not only includes the identification information of the abnormal status, but also integrates the real-time operating data of the sub-node, such as the current liquid level difference, rotation speed, and influent suspended solids concentration and other key parameters.

[0092] The master node compares the real-time operating data of the abnormal sub-nodes with the reference operating data of other normal sub-nodes, selecting the reference sub-node with the highest matching degree. Specifically, the master node's control center compares the current parameter set of the interception system of the blocked sub-node with the real-time parameter set of the interception system of other normally operating sub-nodes, selecting the subsystem with the highest similarity as a reference. Upon receiving an abnormal status command from a sub-node, the master node quickly initiates a data analysis and decision-making process: First, the master node compares the real-time operating data of the abnormal sub-nodes with the reference operating data of other normal sub-nodes. This similarity comparison can employ multi-dimensional analysis methods to quantify and compare various parameters in the real-time operating data. For example, for the parameter of the rotational speed of the hollow rotating cylinder, the deviation between the rotational speed of the abnormal sub-node and the rotational speed of each normal sub-node is calculated; for the liquid level difference parameter, its changing trend is analyzed to differ from that of the normal sub-nodes. By comprehensively considering the similarity of multiple parameters, a preset algorithm model (such as a weighted average method, assigning different weights to different parameters based on their importance to system operation) is used to calculate the overall similarity between the abnormal sub-node and each normal sub-node. The preset algorithm model can be a weighted average algorithm model, assigning different weights to different parameters based on their importance to the system operation. Based on the similarity calculation results, the master node selects the reference child node with the highest matching degree. The operating state of this reference child node is considered to be most similar to the normal operating state of the abnormal child node under the current circumstances. The operating parameters of the reference sub-node with the highest matching degree are sent to the interception system of the blocked sub-node as emergency adjustment parameters, while controlling the interception systems of other sub-nodes to share the influent load. Based on the operating parameters of the reference sub-node, the master node generates coordinated adjustment instructions and sends them to the abnormal sub-nodes. These coordinated adjustment instructions are formulated according to the specific abnormal situation of the abnormal sub-node and the operating parameters of the reference sub-node, and are used to help the abnormal sub-node return to normal operation. For example, if the rotation speed of the hollow rotating cylinder 5 of the abnormal sub-node is too low, the master node's coordinated adjustment instructions include increasing the rotation speed to the level of the reference sub-node, and correspondingly adjusting the working pressure of the screw conveyor 6 and the opening frequency of the flushing device 8. Simultaneously, the master node allocates additional processing load based on the current operating status and processing capacity of each sub-node. For sub-nodes with strong processing capacity and low current load, the master node will instruct them to appropriately increase the processing flow rate to alleviate the burden on the abnormal sub-node. For example, by adjusting the opening of the inlet valve, the master node can divert some of the sewage that was originally flowing to the abnormal sub-node to other sub-nodes for treatment, ensuring the stable operation of the entire suspended solids interception system and avoiding a decrease in the overall system processing efficiency due to the abnormality of a single sub-node.

[0093] Through a distributed collaborative control network, the suspended solids interception system can quickly respond to and effectively deal with abnormal operating states of sub-nodes, improving the overall stability and processing efficiency of the system and providing more reliable protection for the wastewater treatment process.

[0094] The contact area between the interceptor mesh plate 4 and the arc-shaped interceptor 3 is equipped with a pressure sensing component: The pressure sensing component collects real-time pressure distribution information when the two are in contact and sends it to the control center; The control center performs a similarity analysis between the real-time pressure distribution information and the initial pressure distribution template to determine the pressure distribution deviation. When the deviation exceeds a preset range, the preset actuator is controlled to adjust the pressure distribution state of the contact area.

[0095] The pressure sensing component can be a miniature pressure sensor array installed on the stainless steel slide 4-3 on the inner edge of the interceptor plate 4, used to collect the contact pressure distribution data between the scraper 4-1 and the arc-shaped interceptor 3, i.e., pressure distribution information.

[0096] The control center includes an initial pressure distribution template, which is a uniform pressure distribution template stored during system debugging. The control center performs similarity analysis, specifically calculating the pressure deviation similarity, such as the mean square error between the pressure values ​​of each sensor and the template. When the similarity is less than a preset threshold of 90%, the fine-tuning mechanism at the position of the control slide 4-3 is automatically activated to adjust the angle of the scraper 4-1 until the pressure distribution similarity recovers to above the threshold. This achieves dynamic calibration of the scraper 4-1's contact pressure, solving the problem of poor contact and reduced interception efficiency caused by mechanical wear after long-term operation.

[0097] The control center also includes a visualization unit, which is configured as follows: The system collects real-time operational status data of each component and generates a corresponding current status view. Retrieve a typical operating condition view template from the historical database. The template contains data distribution characteristics under standard operating conditions. By using color coding, such as red indicating exceeding the threshold and green indicating the optimal state, the current state view is compared with the typical working condition view template in the same dimension. The deviation area is displayed according to the preset state identification rules, and optimization suggestions are generated.

[0098] When a parameter deviates from the snapshot data by more than the preset range, the deviation area is automatically marked and an adjustment strategy is recommended, such as "The liquid level difference is too high, it is recommended to increase the rotation speed to 1.2 r / min".

[0099] The visualization unit transforms abstract operational data into a visual snapshot comparison interface, solving the problem of scattered data in traditional systems and the difficulty for maintenance personnel to quickly determine optimization directions.

[0100] A suspended solid interception system and method, which achieves: Highly efficient interception is achieved through a hollow rotating cylinder 5 inside the casing 2, coupled with spaced square interception mesh plates 4 and arc-shaped interception components 3. The scraper 4-1 outside the mesh plates works in conjunction with the arc-shaped interception components 3 to achieve efficient interception and secondary scraping of suspended solids. Simultaneously, the gap between the bars of the arc-shaped interception components 3 is ≤1mm, and the mesh aperture, adapted to the interception mesh plate 4, can precisely trap tiny suspended solids, greatly improving interception efficiency and ensuring the stability of subsequent processing.

[0101] Self-cleaning and anti-clogging features are achieved through the elastic vibrating element 7, which uses an adjusting spring. When the intercepting mesh plate 4 rotates to the top, the spring vibrates, causing solids to fall off and preventing their accumulation. The high-pressure water nozzle of the flushing device 8 intelligently activates flushing based on the cylinder rotation speed or liquid level difference, promptly removing residual impurities, ensuring the mesh plate's interception performance, and extending the equipment's lifespan.

[0102] Intelligent adaptive design involves the control center's historical operating condition storage unit and parameter adaptive unit working together. Through multi-dimensional similarity calculation, real-time operating parameters are compared with historical optimal parameter templates, and operating parameters are adjusted based on the results, enabling the system to adapt to different water qualities and quantities. The multi-dimensional similarity calculation uses a parameter subset approach, dynamically determining similarity based on parameter correlation to accurately assess operating condition matching. Dynamic weight fusion rules further optimize the system, allowing it to flexibly respond to complex environments and always maintain optimal operating status.

[0103] Fault early warning and handling: The fault early warning unit collects equipment operation data in real time and compares it with historical fault templates. If the similarity reaches the standard, an early warning is issued and a response strategy is triggered to detect and handle potential faults in advance, reducing downtime and maintenance costs.

[0104] Environmentally friendly and easy to maintain, the sealed casing features a dual-structure design with an odor-removing interface and a removable inspection cover to prevent odor leakage and facilitate equipment maintenance, meeting environmental requirements. The modular design allows for easy component disassembly and replacement, improving system maintainability.

[0105] The above description illustrates preferred embodiments of the present invention and helps those skilled in the art to more fully understand the technical solution of the present invention. However, these embodiments are merely illustrative and should not be construed as limiting the specific implementation of the present invention to these embodiments. For those skilled in the art, several simple deductions and modifications can be made without departing from the inventive concept, and all such modifications should be considered within the protection scope of the present invention.

Claims

1. A suspended solid interception system, characterized in that, include, The housing contains a hollowed-out rotating cylinder and an arc-shaped interceptor. At least two intercepting mesh plates are installed at intervals on the hollow rotating cylinder. The outer end of the intercepting mesh plate is provided with a scraper for scraping off the trapped material on the arc-shaped intercepting component. The hollow rotating cylinder is equipped with a spiral conveying device for conveying and pressing the retained material; The housing is equipped with an elastic vibrating element and a flushing device. The elastic vibrating element is used to cause the rotating intercepting mesh plate to vibrate so as to dislodge the trapped material. The flushing device is used to clean the intercepting mesh plate. The control center is used to adjust the operating parameters of the hollow rotating cylinder, the spiral conveyor, and the rinsing device.

2. The suspended solid interception system according to claim 1, characterized in that, The intercepting mesh is a square structure, with 2 to 8 pieces, and is evenly spaced along the circumference of the hollow rotating cylinder.

3. The suspended solid interception system according to claim 1, characterized in that, The gap width between the arc-shaped interceptor bars is ≤1mm, and the mesh diameter of the interceptor plate is adapted to the gap between the arc-shaped interceptor bars.

4. The suspended solid interception system according to claim 1, characterized in that, The elastic vibrating element is installed at the top of the housing and contacts the inner edge of the intercepting mesh plate. When the intercepting mesh plate rotates to the top position with the hollowed-out rotating cylinder, the elastic vibrating element is compressed, generates elastic deformation, and releases vibration.

5. The suspended solid interception system according to claim 1, characterized in that, The flushing device includes at least two rows of high-pressure water nozzles, which are installed inside the outer frame of the housing and facing the surface of the intercepting mesh plate. The control center controls the opening timing and flushing duration of the high-pressure water nozzles according to the rotation speed of the hollow rotating cylinder or the liquid level difference before and after the mesh.

6. The suspended solid interception system according to claim 1, characterized in that, The intercepting mesh plate is fixedly connected to the non-hollow area of ​​the hollow rotating cylinder through a smooth steel plate. The inner edge of the intercepting mesh plate is provided with a stainless steel slide rail, which assists the suspended solids on the intercepting mesh plate to slide into the hollow rotating cylinder. The scraper is made of wear-resistant rubber or metal and is in contact with the surface of the arc-shaped interceptor.

7. A suspended solid interception system according to claim 5 or 6, characterized in that, The casing is a sealed structure with a removable inspection cover on the top and a deodorization interface on the side, which is connected to the deodorization system.

8. The suspended solid interception system according to claim 1, characterized in that, The control center also includes a historical operating condition storage unit and a parameter adaptive unit. The historical operating condition storage unit is used to store the historical optimal parameter templates of the interception system under different operating scenarios. The templates contain multi-dimensional correlation data that characterize the operating status. The parameter adaptive unit obtains the real-time operating parameter set of the current interception system, performs multi-dimensional similarity calculation between the real-time operating parameter set and the reference parameter set in the historical optimal parameter template, determines the historical operating condition with the highest matching degree, and adjusts the operating parameters of the current interception system based on the parameters corresponding to the historical operating condition with the highest matching degree.

9. The suspended solid interception system according to claim 8, characterized in that, The real-time operating parameter set and the reference parameter set both include a first parameter subset and a second parameter subset. The first parameter subset is a set of parameters characterizing the characteristics of the external environment, and the second parameter subset is a set of parameters characterizing the operating status of the equipment. The multi-dimensional similarity calculation includes calculating the similarity between the first parameter subset of the real-time running parameter set and the first parameter subset of the reference parameter set, and between the second parameter subset of the real-time running parameter set and the second parameter subset of the reference parameter set, and then merging the results of the two into a comprehensive similarity according to a preset rule.

10. The suspended solid interception system according to claim 9, characterized in that, The similarity calculation between the first parameter subset of the real-time running parameter set and the first parameter subset of the reference parameter set adopts a numerical similarity algorithm, including: For each parameter in the first parameter subset of the preprocessed real-time running parameter set, calculate its deviation from the corresponding parameter in the first parameter subset of the reference parameter set; Based on the weight of each parameter's impact on the operation of the interception system, the deviation is weighted and summed to obtain the first dimension of similarity.

11. The suspended solids interception system according to claim 9, characterized in that, The similarity calculation between the second parameter subset of the real-time running parameter set and the second parameter subset of the reference parameter set adopts a vector similarity algorithm, including: The second parameter subset of the preprocessed real-time running parameter set and the second parameter subset of the reference parameter set are respectively represented as multi-dimensional vectors; Calculate the directional consistency metric and / or distance proximity metric between the multidimensional vector corresponding to the second parameter subset of the real-time running parameter set and the multidimensional vector corresponding to the second parameter subset of the reference parameter set; The directional consistency metric and / or distance proximity metric are normalized and converted to a preset similarity range. Based on the correlation characteristics between parameters in the second parameter subset of the real-time running parameter set, at least one of the following methods is dynamically selected to determine the second dimension similarity: When there is a strong correlation between parameters, the normalized directional consistency metric is used as the second dimension of similarity. When there is a weak correlation between parameters, the normalized distance proximity metric is used as the second dimension of similarity. When there is a mixed correlation between parameters, the normalized directional consistency metric and distance proximity metric are fused by a preset fusion rule to obtain the second dimension of similarity.

12. The suspended solids interception system according to claim 11, characterized in that, The preset fusion rules include dynamic weight fusion, specifically: Define a fusion coefficient β, which ranges from 0 to 1. The fusion coefficient is used to adjust the weight ratio of the first dimension similarity and the second dimension similarity. When the system detects that the intensity of external environmental disturbance exceeds the preset threshold, the value of β increases, and it preferentially relies on the first dimension of similarity. When the system detects that the device's operating status deviates from the initial calibration value, the value of β decreases, and it preferentially relies on the second dimension of similarity. The overall similarity S = β × first dimension similarity + (1-β) × second dimension similarity.

13. The suspended solid interception system according to claim 1, characterized in that, The control center also includes a fault early warning unit. The fault early warning unit collects the operating characteristic data of the equipment in real time, extracts typical fault feature templates from the historical database, compares the real-time operating characteristic data with the typical fault feature templates for similarity, and generates a fault early warning signal and triggers a preset response strategy when the similarity reaches a preset threshold.

14. A method for intercepting suspended solids, characterized in that, Includes the following steps, The raw sewage flows through a fluid channel equipped with an interceptor screen, driving the interceptor screen to rotate. The scraper at the outer end of the interceptor screen contacts the surface of the arc-shaped interceptor, removing the suspended solids trapped by the arc-shaped interceptor. When the rotating interception mesh plate rotates to the preset position, the elastic vibrating element causes the interception mesh plate to vibrate, causing the suspended solids attached to the surface of the interception mesh plate to fall into the hollow rotating cylinder. The spiral conveyor inside the hollow rotating cylinder transports the detached suspended solids to the discharge port, and dehydrates the suspended solids during the conveying process before discharging them. The control center monitors the operating status parameters of the interceptor mesh or the resistance parameters of the fluid channel. When these parameters reach a preset threshold, the flushing device is activated to clean the interceptor surface of the mesh.

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