Sewage purification and reuse treatment system based on sewage pipe network

Abstract

The invention discloses a sewage purification and reuse treatment system based on a sewage pipe network, relates to the technical field of sewage purification in sewage pipe networks, and is used to solve the problem that the sewage in a factory area has not been preliminarily purified, and the pipeline is easily blocked during the external discharge process, causing part of the sewage to cross pipes; the invention classifies, monitors and treats the sewage in the external discharge pipeline of the factory area, uses a filter element installed in a filter cartridge to preliminarily intercept suspended organic impurities in the sewage, and the filter cartridge is installed in combination in a filter material mechanism, and when the filter element filters the load, the pressure is actively released by the movement of the pressing sleeve and the slag discharge hole, and under the subsequent operation of the electric control box, the pipeline water flow monitoring is completed, and the motor and cylinder activities in the fixed frame are timely controlled to complete the rotation of the corresponding filter cartridge side shaft, realize the angle adjustment of the sealing plate in the through pipe, and timely adjust the flow direction of the sewage in the pipeline to avoid the pipeline blockage problem caused by continuous untreated sewage discharge.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage purification in sewage pipe networks, and in particular to a sewage purification and reuse treatment system based on sewage pipe networks. Background Art

[0002] The sewage pipe network system of a chemical plant is a system for collecting, transmitting and treating wastewater generated in the chemical production process, including sewage pipes, sewage treatment equipment and other auxiliary facilities, which is designed to effectively manage and treat the wastewater generated by chemical plants to prevent environmental pollution and protect public health;

[0003] Sewage pipes are a key component of sewage collection and transmission. They consist of a network of pipes that collect wastewater generated by various production units and facilities in a chemical plant and transmit it to sewage treatment equipment for treatment. These pipes are usually made of corrosion-resistant materials to adapt to the corrosiveness of chemical substances. Sewage treatment equipment is the core part of the sewage pipe network system of a chemical plant, including physical, chemical and biological treatment units to remove or reduce harmful substances and pollutants in wastewater. These treatment units can include sedimentation tanks, bioreactors, filters, adsorbents and oxidants, etc., which vary according to the nature of the wastewater and treatment requirements;

[0004] Sewage is divided into organic sewage and inorganic sewage according to its type. If sewage cannot be effectively delivered after preliminary treatment, it is easy to cause sewage leakage and environmental accidents. In addition, if the sewage delivery network cannot work properly, it will also cause pipeline pressure buildup and water cross-contamination between different sewage pipes. For example, organic sewage crosses into inorganic sewage pipes and pollutes inorganic sewage pipes. The treatment cost of organic sewage is twice that of inorganic sewage, which will cause serious economic losses. Secondly, if the sewage delivery network system cannot work properly, it will also cause damage to pipeline accessories, requiring personnel to actively check and unable to achieve automatic adjustment;

[0005] To this end, we propose a sewage purification and reuse treatment system based on the sewage pipe network. Summary of the invention

[0006] The purpose of the present invention is to provide a sewage purification and reuse treatment system based on a sewage pipe network to solve the problem raised in the above background technology that the factory sewage has not been preliminarily purified, which easily leads to pipeline pressure build-up and blockage during the discharge process, causing some sewage to cross pipes, and the pipeline problems cannot be automatically checked and handled.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A sewage purification and reuse treatment system based on a sewage pipe network comprises a fixed frame on which a sewage pipe and a filter material mechanism are installed;

[0008] The filter material mechanism comprises a filter cartridge, the inner wall of the filter cartridge is fixedly connected with a mesh cartridge by bolts, a filter element is sleeved and fixedly arranged in the filter cartridge and on the outer wall of the mesh cartridge, a slag discharge hole is opened in the outer wall of the mesh cartridge, a pressing sleeve is sleeved and slidably connected in the filter cartridge and on the outer side of the slag discharge hole, and a spring is sleeved and installed on the pressing sleeve and the inner wall of the filter cartridge and on the mesh cartridge;

[0009] The filter material mechanism also includes a through pipe, a sealing plate and a rotating shaft. The opposite surfaces of two adjacent filter cartridges on the same horizontal line are symmetrically connected with a through pipe, and the sealing plate is symmetrically and movably connected in the through pipe. The opposite surfaces of the two sealing plates and the outer wall of the through pipe are provided with a drainage port. The opposite surfaces of the two through pipes are symmetrically installed with a rotating shaft, and the two ends of the rotating shaft pass through the through pipe and are fixed to the sealing plate. The outer wall of the rotating shaft is symmetrically sleeved and fixed with a rotating sleeve;

[0010] A clamping sleeve is fixedly connected in the fixing frame and located at the bottom of the filter cartridge, a clamping plate is evenly and symmetrically installed in the clamping sleeve, an arc groove is opened at the bottom of the clamping plate, a slideway is opened on the clamping plate, and the slideway is correspondingly clamped with the rotating sleeve on the rotating shaft;

[0011] A cylinder is fixed to the inner wall of the bottom of the fixing frame by bolts, a toothed rod is movably connected to the end of the cylinder, a rotary arm is fixed to one end of the toothed rod by spot welding, buckles are fixed to the top two sides of the rotary arm by bolts, and the buckles are engaged with the arc grooves, a motor is fixed to the inner wall of the bottom of the fixing frame by bolts, and a toothed sleeve is fixed on the output end of the motor, and one side of the toothed sleeve is meshed and connected with the toothed rod;

[0012] The fixing frame is symmetrically mounted with medicine tanks, one side of the medicine tanks is connected to a mixing tank, one side of the mixing tanks is connected to a liquid storage tank, one side of the mixing tanks is mounted with flushing pipes, and the other ends of the flushing pipes are respectively connected to the filter cartridges;

[0013] One side of the liquid discharge port is respectively connected to the sewage discharge pipe, the other side of the filter cartridge is connected to the flushing pipe connected to the sewage storage tank, and the flushing pipe is equipped with a solenoid valve, and the fixing frame is equipped with an electric control box;

[0014] The electric control box includes a water body monitoring and collection unit, a filtration analysis and decision-making unit, and an equipment management unit;

[0015] The water body monitoring and collection unit is used for real-time monitoring of the drainage of the sewage pipe on the filter cartridge and obtaining composite water quality data, wherein the composite water quality data includes the average water flow velocity value, the hydraulic floating extreme value and the suspended particle change value, and after obtaining the composite water quality data, it is actively sent to the filtration analysis and decision-making unit;

[0016] The filtration analysis and decision unit processes the water quality composite data integration formula to obtain the filtration backwash coefficient, and compares it with the filtration backwash coefficient threshold stored in the filtration analysis and decision unit, and generates a control signal and a conventional signal to send to the equipment management unit;

[0017] After obtaining the control signal, the equipment management unit actively controls the valves on the medicine tank and the liquid storage tank to open, and then controls the centrifugal water pump to discharge the medicine and the mixed liquid into the mixing tank. At the same time, the equipment management unit controls the motor in the fixed frame to rotate, and then completes the corresponding splint height adjustment through the cylinder to realize the rotation of the corresponding filter cartridge shaft.

[0018] The sewage purification and reuse treatment method of the sewage pipe network is:

[0019] Interception and purification: Four sets of sewage pipes are used to transport sewage to the single-side filter cartridge. The circulating sewage is intercepted by the filter element and the net cylinder and discharged from the single-side sewage pipe. At the same time, the flow rate sensor, hydraulic sensor and turbidity sensor installed at the front end of the sewage pipe monitor the circulating sewage in real time.

[0020] Backwashing by changing the flow path: With the increase of the amount of impurities intercepted by the filter elements in the four groups of filter cartridges, when the water pressure in a single filter cartridge increases and pushes the pressure sleeve to slide, the sewage will flow out directly through the slag discharge hole. At this time, the associated sensor on the front sewage pipe collects data for uploading. After being processed by the electronic control box, the motor on the fixed frame is immediately controlled to rotate to achieve the corresponding angle control of the swing arm. At the same time, the cylinder contracts to pull the corresponding splint down, driving the corresponding filter cartridge to rotate the shaft to complete the blocking of the original water path of the pipe. At the same time, the medicine tank and the liquid storage tank discharge liquid into the mixing tank at the same time, and the flushing agent enters the filter cartridge along the flushing pipe, flows from the inside to the outside to the agent water flow to flush the filter element, and the discharged sewage enters the sewage storage tank for storage.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. In the present invention, by classifying, monitoring and treating the sewage in the external discharge pipe of the factory area, the filter element installed in the filter cartridge is used to initially intercept the suspended organic impurities in the sewage, so as to prevent the subsequent inner wall of the pipeline from being blocked, resulting in a reduction in the amount of external sewage, pressure buildup in the pipeline and water flow problems in the sewage pipeline. The filter cartridge is installed in combination in the filter material mechanism, and when the filter element is filtering the load, the pressure is released actively by the movement of the pressing sleeve and the slag discharge hole. Under the subsequent operation of the electric control box, the pipeline water flow monitoring is completed, and the movement of the motor and the cylinder in the fixed frame is timely controlled to complete the rotation of the corresponding filter cartridge side shaft, realize the angle adjustment of the sealing plate in the through pipe, and timely adjust the flow direction of the sewage in the pipeline to avoid the pipeline blockage problem caused by the continuous discharge of untreated sewage;

[0023] 2. In the present invention, the load state of the filter element in the filter cartridge is actively analyzed by monitoring the water flow in the sewage pipe, and when the filter element is saturated with filtration, the medicine tank and the liquid storage tank are actively controlled to prepare the flushing agent, and the agent is actively discharged into the corresponding filter cartridge along the flushing pipe to soak the clogged filter element. In the subsequent flushing, the filter element is self-cleaned and the discharged sewage is enriched at the same time, which is beneficial to the long-term operation of the entire filter material mechanism and does not require human participation in adjustment, with a high degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the sewage purification and reuse treatment system of the sewage pipe network of the present invention;

[0025] Figure 2 It is a schematic diagram of the overall structure of the filter material mechanism of the present invention;

[0026] Figure 3 It is a schematic diagram of the installation of the filter element in the filter cartridge of the present invention and the water flow direction;

[0027] Figure 4 This is a schematic diagram of the backwashing structure of the filter cartridge of the present invention;

[0028] Figure 5 This is a schematic diagram of the connection structure between the rotating shaft and the sealing plate in the through pipe of the present invention;

[0029] Figure 6 It is a schematic diagram of the clamping structure of the clamping plate, the clamping sleeve and the rotating sleeve of the present invention;

[0030] Figure 7 It is a schematic diagram of the structure of the swing arm and the arc groove at the bottom of the clamping plate of the present invention;

[0031] Figure 8 It is a schematic diagram of the structure of the rotary arm rotating in the arc groove at the bottom of the clamping plate of the present invention.

[0032] In the figure: 1, fixed frame; 2, medicine tank; 3, liquid storage tank; 4, mixing tank; 5, sewage pipe; 6, electric control box; 7, filter material mechanism; 701, filter cartridge; 702, through pipe; 703, drainage port; 704, sealing plate; 705, rotating shaft; 706, rotary sleeve; 8, mesh cylinder; 9, slag discharge hole; 10, filter element; 11, pressing sleeve; 12, spring; 13, flushing pipe; 14, solenoid valve; 15, sewage storage box; 16, ferrule; 17, splint; 18, slideway; 19, arc groove; 20, cylinder; 21, toothed rod; 22, swing arm; 23, buckle; 24, motor; 25, gear sleeve. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1-8 , the present invention provides a technical solution:

[0035] Example 1: Classify organic wastewater and inorganic wastewater according to chemical plants for discharge, such as Figure 1 As shown, four sewage pipes are installed on one side of the fixed frame 1. The four sewage pipes 5 correspond to factory production sewage, accident sewage, circulating water sewage and domestic sewage respectively. The circulating water sewage is inorganic wastewater. The medium pressure and flow are provided by the water pump in the working section on a daily basis. The pressure is regulated by the on-site pressure gauge, and the parameters are controlled by the manual valve until the acceptance capacity of the sewage treatment plant is met. The four sewage pipes are smoothly delivered to ensure the normal and stable production of the equipment in the working section. Now, the four sewage pipes 5 are connected to the filter material mechanism 7 to pre-treat the sewage to avoid the increase of impurity content in the sewage discharge process. The impurity thickness of the inner wall of the pipeline is increased due to long-term drainage, which is prone to pipeline blockage.

[0036] The main body of the filter material mechanism 7 is two filter cartridges 701, which are connected by symmetrical through pipes 702. A drainage port 703 is provided on the through pipe 702. Sewage enters the drainage port 703 on one side and exits the drainage port 703 on the other side, and is filtered only by the filter cartridge 701 on one side. The filter cartridge 701 on the other side acts as a spare tire, responsible for temporary filtration during backwashing of the filter cartridge 701 on one side, and the filter cartridges 701 on both sides of the main structure are the same;

[0037] like Figure 2 and Figure 3 As shown, a sealing plate 704 is symmetrically and movably connected in the through pipe 702. Usually, the sealing plate 704 on one side is normally open, and the sealing plate 704 on the other side is normally closed. The rotation of the sealing plate 704 is realized by a rotating shaft 705 connected to the outside. A rotating sleeve 706 is symmetrically sleeved and fixed on the rotating shaft 705. The rotation of the rotating sleeve 706 is used to realize the rotation of the rotating shaft 705 and the sealing plate 704 connected to the rotating shaft 705, thereby adjusting the flow direction of the water at the drain port 703.

[0038] A mesh cylinder 8 is fixedly connected inside the filter cylinder 701, and a filter element 10 is fixedly sleeved on the outer wall of the mesh cylinder 8. The mesh cylinder 8 is made of textile fiber yarns with good filtering performance precisely wound on a porous skeleton, and a pressing sleeve 11 is slidably connected to the mesh cylinder 8 at the end of the filter element 10. The pressing sleeve 11 is used to intercept the slag discharge hole 9 on the mesh cylinder 8. At the same time, a spring 12 is sleeved and installed on the mesh cylinder 8 on the other side of the pressing sleeve 11. The spring 12 is used to continuously apply pressure to the pressing sleeve 11. However, considering the influence of water pressure, once more impurities are intercepted on the surface of the filter element 10 on the mesh cylinder 8, the water flow enters the filter cylinder 701 at this time, and the filtration rate slows down, resulting in the continuous increase of water pressure on the opposite side of the filter cylinder 701 and the filter element 10 until the pressing sleeve 11 is pushed away from the slag discharge hole 9. At this time, the sewage is not purified by the filter element 10 and is directly discharged from the slag discharge port, and finally discharged along the sewage pipe 5, which will also cause the external pipe to be blocked. At this time, the filter element 10 needs to be cleaned.

[0039] Embodiment 2: An electric control box 6 is installed on the fixed frame 1, and the electric control box 6 includes a water body monitoring and collection unit, a filtration analysis and decision unit and an equipment management unit, wherein the water body monitoring and collection unit is used for monitoring the water quality at the outlet of the sewage pipe 5, and obtaining water quality composite data, wherein the water quality composite data includes an average water flow velocity value, a hydraulic floating extreme value and a suspended particle change value, and the average water flow velocity value is obtained by a flow velocity sensor installed at the outlet of the sewage pipe 5, the hydraulic floating extreme value is obtained by a water pressure sensor on the sewage pipe 5, and the suspended particle change value is obtained by a turbidity sensor installed on the sewage pipe 5, and data is obtained in real time within the monitoring period set by the water body monitoring and collection unit, and after obtaining the water quality composite data, it is actively sent to the filtration analysis and decision unit;

[0040] The filtration analysis and decision-making unit performs water quality composite data integration formula processing, which specifically includes the following steps:

[0041] The acquired water quality composite data are marked, the average water flow velocity value is marked as YLn, the hydraulic floating extreme value is marked as YCn, and the suspended particle change value is marked as YKn;

[0042] Through the formula Hn = YLn × d1 + YCn 2 ×d2+YKn×d3 is processed to obtain the filtration backwash coefficient Hn, where d1, d2 and d3 are weight factors, and d1>d3>d2>0, and n is the corresponding filter cartridge 701 pipeline number;

[0043] When the filtration backwashing coefficient is compared with the filtration backwashing coefficient threshold stored in the filtration analysis and decision unit, when the filtration backwashing coefficient is greater than or equal to the filtration backwashing coefficient threshold, a control signal is generated, and when the filtration backwashing coefficient is less than the filtration backwashing coefficient threshold, a normal signal is generated;

[0044] After the equipment management unit receives the control signal, it is necessary to stop the water flow route in the filter cartridge 701 to perform backwashing. Since the four sewage pipes 5 are monitored at the same time, when one pipe alarms, it is necessary to identify and control accordingly. According to the control signal of the corresponding filter cartridge 701 received, the equipment management unit controls the motor 24 in the fixed frame 1.

[0045] like Figure 6 , Figure 7 and Figure 8 As shown, a clamping plate 17 is slidably connected to the rotary sleeve 706 located in the fixed frame 1, and a slideway 18 is provided on the clamping plate 17 to engage with the side convexity of the rotary sleeve 706. When the clamping plate 17 moves down, it will drive the rotating shaft 705 connected to the rotary sleeve 706 to rotate, thereby changing the direction of the sealing plate 704 located in the through pipe 702. At the same time, the installation of the rotary sleeve 706 on the rotating shaft 705 of each layer of the filter cartridge 701 is not on the same section, resulting in the clamping plates 17 being placed close to each other, and The clamping plates 17 do not interfere with the rotating sleeves 706 on the remaining rotating shafts 705. The clamping sleeves 16 are installed on the fixing frame 1 to fix the clamping plates 17 to limit the position of the clamping plates 17. At the same time, an arc groove 19 is opened at the bottom of the clamping plate 17 combination. A rotary arm 22 is installed at the bottom of the arc groove 19. The buckles 23 installed on both sides of the rotary arm 22 are connected with the arc groove 19 on the corresponding clamping plate 17, and the clamping plate 17 is moved downward to pull the rotating sleeve 706 on the entire rotating shaft 705 to rotate;

[0046] The motor 24 is controlled to rotate at a fixed angle, and the gear sleeve 25 at the output end of the motor 24 is meshed with the toothed rod 21 at the bottom of the swing arm 22. The rotation of the motor 24 realizes the rotation of the entire swing arm 22, and the bottom of the toothed rod 21 is connected to the cylinder 20. Figure 8 As shown, when the second layer filter cartridge 701 is blocked, the motor 24 rotates to drive the rotary arm 22 to rotate 45 degrees. At this time, the buckle 23 on the rotary arm 22 is engaged with the arc groove 19 at the bottom of the second inner clamping plate 17. At this time, the cylinder 20 contracts and pulls the rotary arm 22. The rotary arm 22 moves while driving the clamping plate 17 to move. The clamping plate 17 moves while realizing the rotation of the rotating shaft 705 on the second layer through pipe 702, and adjusting the angles of the sealing plates 704 on both sides of the through pipe 702.

[0047] At this time Figure 3 to Figure 4 As shown, the original water flows along the through pipe 702 into the upper filter cartridge 701, and is discharged after being filtered and intercepted. At this time, the upper filter cartridge 701 issues a blockage alarm, and the clamping plate 17 moves to drive the rotating shaft 705 to rotate, so as to adjust the sealing plate 704 in the through pipe 702. Figure 4 As shown, the water cannot flow to the upper filter cartridge 701, and enters the filter cartridge 701 along the sealing plate 704 on the lower through pipe 702, and is finally filtered and discharged;

[0048] At this time, the upper filter cartridge 701 is empty and can be cleaned accordingly. The equipment management unit starts to control the discharge of liquid from the medicine tank 2 on the fixed frame 1. At the same time, the liquid storage tank 3 discharges liquid into the mixing tank 4 to dilute the pipeline cleaning agent discharged from the medicine tank 2, and finally is uniformly sent to the flushing pipe 13 through the centrifugal water pump. The cleaning agent enters the inner side of the mesh tube 8 along the other side of the filter cartridge 701 and begins to contact the inner wall of the filter element 10. After being soaked and softened by the cleaning agent, the adsorption of impurities attached to the outer wall of the filter element 10 is reduced. In the subsequent water flow from the inside to the outside, the impurities on the filter element 10 are continuously flushed away, and the sewage is discharged into the sewage storage box 15 along the flushing pipe 13 on the other side of the filter cartridge 701. The corresponding solenoid valve 14 on the flushing pipe 13 also needs to be opened. After the backwashing operation in the filter cartridge 701 for a set time, the cleaned filter cartridge 701 will participate in the filtering work again. At this time, the cylinder 20 pushes the lower clamping plate 17 to reset, and the sewage starts to flow on the single side again.

[0049] Taking into account that if there are two or more groups of filter material mechanisms 7 and the control signals are sent at the same time, the filtration analysis decision unit at this time arranges them according to the numerical values ​​of the filtration backwash coefficients of each group, and adjusts them one by one in combination with the classification of sewage in the pipeline. The larger the value of the filtration backwash coefficient, the sooner it is adjusted. The adjustment priority of the filter cartridge 701 for organic sewage is higher than that for inorganic sewage.

[0050] The working process and principle of the present invention are as follows:

[0051] The four sets of sewage pipes 5 are used to transport sewage to the single-side filter cartridge 701. The circulating sewage is intercepted by the filter element 10 and the mesh cylinder 8 and discharged from the single-side sewage pipe 5 of the through pipe 702. At the same time, the flow rate sensor, hydraulic pressure sensor and turbidity sensor installed at the front end of the sewage pipe 5 monitor the circulating sewage in real time.

[0052] As the amount of impurities intercepted by the filter element 10 in the four groups of filter cartridges 701 increases, when the water pressure in a single filter cartridge 701 increases and pushes the pressure sleeve 11 to slide, the sewage will directly flow out through the slag discharge hole 9. At this time, the associated sensor on the front sewage pipe 5 collects data for uploading. After being processed by the electronic control box 6, the motor 24 on the fixed frame 1 is immediately controlled to rotate, so as to realize the corresponding angle control of the swing arm 22. At the same time, the cylinder 20 contracts to pull the corresponding clamping plate 17 down, driving the corresponding filter cartridge 701 on the rotating shaft 705 to rotate, completing the blocking of the original water channel of the through pipe 702. At the same time, the medicine tank 2 and the liquid storage tank 3 discharge liquid into the mixing tank 4 at the same time, and the flushing agent enters the filter cartridge 701 along the flushing pipe 13, and flows from the inside to the outside to the medicine water flow to flush the filter element 10. The discharged sewage enters the sewage storage tank 15 for storage.

[0053] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0055] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A sewage purification and reuse treatment system based on a sewage pipe network, comprising a fixed frame (1), characterized in that: A sewage pipe (5) and a filter material mechanism (7) are installed on the fixed frame (1); The filter material mechanism (7) comprises a filter cartridge (701), the inner wall of the filter cartridge (701) being fixedly connected to a mesh cartridge (8) by means of bolts, a filter element (10) being sleeved and fixedly arranged inside the filter cartridge (701) and on the outer wall of the mesh cartridge (8), a slag discharge hole (9) being provided on the outer wall of the mesh cartridge (8), a pressing sleeve (11) being sleeved and slidably connected inside the filter cartridge (701) and on the outer side of the slag discharge hole (9), and a spring (12) being sleeved and installed between the pressing sleeve (11) and the inner wall of the filter cartridge (701) and on the mesh cartridge (8); The filter material mechanism (7) further comprises a through pipe (702), a sealing plate (704) and a rotating shaft (705); opposite surfaces of two adjacent filter cartridges (701) on the same horizontal line are symmetrically connected to the through pipe (702); a sealing plate (704) is symmetrically movably connected inside the through pipe (702); a liquid discharge port (703) is provided on opposite surfaces of the two sealing plates (704) and located on the outer wall of the through pipe (702); rotating shafts (705) are symmetrically installed on opposite surfaces of the two through pipes (702); both ends of the rotating shaft (705) penetrate the through pipe (702) and are fixed to the sealing plate (704); and a rotating sleeve (706) is symmetrically sleeved and fixed on the outer wall of the rotating shaft (705); A clamping sleeve (16) is fixedly connected inside the fixing frame (1) and located at the bottom of the filter cartridge (701), a clamping plate (17) is evenly and symmetrically installed inside the clamping sleeve (16), an arc groove (19) is provided at the bottom of the clamping plate (17), a slideway (18) is provided on the top of the clamping plate (17), and the slideway (18) is correspondingly clamped with a rotating sleeve (706) on the rotating shaft (705); A cylinder (20) is fixed to the inner wall of the bottom of the fixing frame (1) by bolts, a toothed rod (21) is movably connected to the end of the cylinder (20), a rotary arm (22) is fixed to one end of the toothed rod (21) by spot welding, buckles (23) are fixed to the top two sides of the rotary arm (22) by bolts, and the buckles (23) are snap-fitted to the arc groove (19), a motor (24) is fixed to the inner wall of the bottom of the fixing frame (1) by bolts, and a toothed sleeve (25) is sleeved and fixed on the output end of the motor (24), and one side of the toothed sleeve (25) is meshedly connected to the toothed rod (21); The fixing frame (1) is symmetrically mounted with medicine tanks (2), one side of the medicine tanks (2) is connected to a mixing tank (4), one side of the mixing tank (4) is connected to a liquid storage tank (3), one side of the mixing tank (4) is mounted with a flushing pipe (13), the other end of the flushing pipe (13) is respectively connected to the filter cartridge (701); One side of the liquid discharge port (703) is respectively connected to the sewage discharge pipe (5), the other side of the filter cartridge (701) is connected to the flushing pipe (13) and is connected to the sewage storage tank (15), and a solenoid valve (14) is installed on the flushing pipe (13), and an electric control box (6) is installed on the fixing frame (1); The electric control box (6) comprises a water body monitoring and collection unit, a filtration analysis and decision unit and an equipment management unit; The water body monitoring and collection unit is used for real-time monitoring of drainage from the sewage pipe (5) on the filter cartridge (701) and obtaining composite water quality data, wherein the composite water quality data includes an average water flow velocity value, a hydraulic floating extreme value and a suspended particle change value, and actively sends the composite water quality data to the filtration analysis and decision unit after obtaining the composite water quality data; The filtration analysis and decision unit processes the water quality composite data integration formula to obtain the filtration backwash coefficient, and compares it with the filtration backwash coefficient threshold stored in the filtration analysis and decision unit, and generates a control signal and a conventional signal to send to the equipment management unit; After receiving the control signal, the equipment management unit actively controls the valves on the medicine tank (2) and the liquid storage tank (3) to open, and then controls the centrifugal water pump to discharge the medicine and the mixed liquid into the mixing tank (4). At the same time, the equipment management unit controls the motor (24) in the fixed frame (1) to rotate, and then completes the height adjustment of the corresponding clamping plate (17) through the operation of the cylinder (20), thereby realizing the rotation of the rotating shaft (705) on the corresponding filter cartridge (701).

2. The sewage purification and reuse treatment system based on the sewage pipe network according to claim 1 is characterized in that: The sewage purification and reuse treatment method of the sewage pipe network is: Interception and purification: Four sets of sewage pipes (5) are used to transport sewage to the outside and enter the single-side filter cartridge (701). The circulating sewage is intercepted by the filter core (10) and the net cylinder (8) and discharged from the single-side sewage pipe (5) of the through pipe (702). At the same time, the flow rate sensor, hydraulic pressure sensor and turbidity sensor installed at the front end of the sewage pipe (5) monitor the circulating sewage in real time; Backwashing by changing the flow path: With the increase of the amount of impurities intercepted by the filter element (10) in the four groups of filter cartridges (701), when the water pressure in a single filter cartridge (701) increases and pushes the pressing sleeve (11) to slide, the sewage will flow out directly through the slag discharge hole (9). At this time, the associated sensor on the front sewage pipe (5) collects data and uploads it. After being processed by the electric control box (6), the motor (24) on the fixed frame (1) is immediately controlled to rotate, so as to realize the corresponding angle control of the swing arm (22). At the same time, the cylinder (20) contracts to pull the corresponding clamping plate (17) downward, driving the corresponding upper rotating shaft (705) of the filter cartridge (701) to rotate, completing the blocking of the original water path of the through pipe (702). At the same time, the medicine tank (2) and the liquid storage tank (3) simultaneously discharge liquid into the mixing tank (4), and the flushing agent enters the filter cartridge (701) along the flushing pipe (13), flows from the inside to the outside toward the agent water flow to flush the filter element (10), and the discharged sewage enters the sewage storage tank (15) for storage.

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