Sewage suspended matter filtering system with automatic cleaning function

Abstract

The utility model relates to a sewage suspended matter filtering system with an automatic cleaning function, and belongs to the technical field of sewage treatment equipment. The sewage treatment device comprises a conveying mechanism, a self-cleaning mechanism and a sewage collection mechanism, the conveying mechanism comprises a first pipe set, a second pipe set and a third pipe set, the first pipe set is connected with a sewage treatment device, the second pipe set is connected with the first pipe set and the third pipe set, and the second pipe set comprises a first branch pipe and a second branch pipe which are connected in parallel; the third pipe group comprises a first discharge pipe and two second discharge pipes; the self-cleaning mechanism comprises two self-cleaning parts, each self-cleaning part is provided with an input end, an output end and a drain outlet, the input ends of the two self-cleaning parts are connected with a first branch pipe and a second branch pipe respectively, second discharge pipes are connected with the output ends, the two second discharge pipes are communicated with a first discharge pipe, and the diameter of the first end of the first discharge pipe is larger than that of the second end of the first discharge pipe; the second end of the first discharge pipe is connected with the ultrafiltration device; the sewage outlet is connected with a sewage collecting mechanism. The ultra-filtration device has the effect of improving the problem that the ultra-filtration device is easy to block.

Description

Technical Field

[0001] The present application relates to the technical field of sewage treatment equipment, and in particular to a sewage suspended matter filtering system with an automatic cleaning function. Background Art

[0002] Wastewater treatment is the process of purifying wastewater to ensure it meets the required water quality for discharge into a water body or reuse. Sewage treatment plants treat a variety of wastewater types, including leachate, fecal wastewater, and food waste, which contain large amounts of suspended solids.

[0003] Some small suspended solids in sewage cannot be completely removed during the pretreatment process, causing them to enter the biochemical tank with the water. Currently, ultrafiltration is generally used for purification. The sewage in the biochemical tank and the suspended solids, colloids, proteins, microorganisms and other macromolecules in the sludge are lifted by the ultrafiltration inlet pump and then filtered into the ultrafiltration system for interception, thus achieving mud-water separation.

[0004] However, due to the high concentration of impurities in the influent water of the ultrafiltration device, the filter cap of the ultrafiltration device is prone to frequent clogging, requiring the device to be shut down for manual cleaning. Frequent filter cap clogging not only requires frequent startup and shutdown of the ultrafiltration device, affecting ultrafiltration water production, but also requires manual cleaning of impurities on the filter cap, increasing the workload of operators.

[0005] In the above-mentioned related technologies, there is a defect that the ultrafiltration device is prone to clogging. Utility Model Content

[0006] In order to improve the problem that ultrafiltration devices are prone to clogging, the present application provides a sewage suspended matter filtration system with an automatic cleaning function.

[0007] The sewage suspended solids filtration system with automatic cleaning function provided in this application adopts the following technical solutions:

[0008] A sewage suspended solids filtration system with an automatic cleaning function is provided between a sewage treatment device and an ultrafiltration device, comprising: a conveying mechanism including a first tube group, a second tube group and a third tube group, wherein a first end of the first tube group is connected to the sewage treatment device, two ends of the second tube group are respectively connected to the second end of the first tube group and the third tube group, the second tube group includes a first branch pipe and a second branch pipe, the first branch pipe and the second branch pipe are arranged in parallel, and the third tube group includes a first discharge pipe and at least two second discharge pipes; a self-cleaning mechanism including at least two self-cleaning members, each of which is provided with an input end, a discharge end, and a discharge end. The output end and the sewage outlet, the input ends of the two self-cleaning parts are respectively connected to the first branch pipe and the second branch pipe, the second discharge pipe is arranged corresponding to the output end of the self-cleaning part, the first end of the second discharge pipe is connected to the output end of the self-cleaning part, the second ends of the two second discharge pipes are connected to the first end of the first discharge pipe, the diameter of the first end of the first discharge pipe is larger than the diameter of the second end of the first discharge pipe, and the second end of the first discharge pipe is connected to the ultrafiltration device; the sewage collecting mechanism is arranged between the first branch pipe and the second branch pipe, and the sewage outlets of the self-cleaning parts are all connected to the sewage collecting mechanism.

[0009] By adopting the above technical solution, the first pipe group is connected to the sewage treatment device, so that the sewage flows from the sewage treatment device through the first pipe group, the second pipe group and the third pipe group, and then enters the ultrafiltration device to realize the sewage treatment process; wherein, the second pipe group includes a first branch pipe and a second branch pipe arranged in parallel, and the first branch pipe and the second branch pipe are both connected with self-cleaning parts, so that the first branch pipe and the second branch pipe can both have suspended matter filtering and self-cleaning capabilities, reducing the suspended matter content of the sewage entering the third pipe group and the ultrafiltration device, and reducing the risk of blockage through the self-cleaning function. At the same time, the setting of the self-cleaning parts can reduce the difficulty of cleaning suspended matter and the need for shutdown and maintenance, which helps to reduce labor intensity; through the redundant setting of the second pipe group, the second pipe group has higher reliability. In the event of a failure in one of the first branch pipe and the second branch pipe, the sewage can be self-cleaned and circulated through the other one, ensuring the reliability of sewage circulation and treatment. The sewage outlets of the self-cleaning parts on the first branch pipe and the second branch pipe are connected to the same sewage collecting mechanism, and the sewage collecting mechanism is arranged between the first branch pipe and the second branch pipe, which helps to reasonably utilize space and reduce space occupancy. In addition, since only one sewage collecting mechanism is provided, it helps to conveniently clean the sewage and suspended matter flowing out of the sewage outlet. The two second discharge pipes of the third pipe group are respectively connected to the first branch pipe and the second branch pipe, and the first end of the first discharge pipe is used to converge the sewage in the first branch pipe and the second branch pipe. The second end of the first discharge pipe is connected to the ultrafiltration device, so that the sewage can flow into the ultrafiltration device for ultrafiltration and cement separation of the sewage. Since the diameter of the first end of the first discharge pipe is larger than the diameter of the second end of the first discharge pipe, the sewage flow rate when flowing to the ultrafiltration device can be accelerated, thereby reducing the sedimentation of suspended matter in the sewage entering the ultrafiltration device, and the risk of clogging the ultrafiltration device when the sediment moves as a whole.

[0010] Optionally, the conveying mechanism further includes a conversion member, which respectively connects the second end of the first pipe group, the first branch pipe and the second branch pipe, and the conversion member is used to make the sewage in the first pipe group flow to the first branch pipe and / or the second branch pipe.

[0011] By adopting the above technical solution, the conversion component is used to realize the connection and disconnection between the first branch pipe and the second branch pipe and the first pipe group, so that the sewage in the first pipe group can flow to the first branch pipe and the second branch pipe at the same time, thereby improving the sewage treatment efficiency; or, one of the first branch pipe and the second branch pipe is connected to the first pipe group, and the other is used as a spare branch pipe, so as to improve the reliability of the second pipe group in filtering suspended matter in the sewage and reduce the risk of clogging of the ultrafiltration device.

[0012] Optionally, the diameter of the first branch pipe and the diameter of the second branch pipe are both smaller than the diameter of the second end of the first pipe group.

[0013] By adopting the above technical solution, when sewage flows from the first pipe group to the second pipe group, the flow rate of the sewage will be accelerated due to the reduction in the flow area, which helps to reduce the deposition of suspended matter and reduce the difficulty of cleaning the self-cleaning parts. At the same time, the floating of suspended matter helps to improve the cleaning effect of the self-cleaning parts on suspended matter, reduce the suspended matter content in the sewage flowing to the ultrafiltration device, and thus reduce the risk of clogging of the ultrafiltration device.

[0014] Optionally, it also includes a blowing mechanism, which includes a first blowing pipe, a blowing drive and an exhaust pipe, the first end of the first blowing pipe is connected to the second tube group, the output end of the blowing drive is connected to the second end of the first blowing pipe, the exhaust pipe is arranged on one side of the first blowing pipe, and the exhaust pipe is connected to the second tube group.

[0015] By adopting the above technical solution, the blowing drive component blows air into the first blowing pipe, thereby stirring the sewage suspended matter in the second tube group, which helps to improve the uniformity of the suspended matter, reduce sedimentation, and improve the filtering effect of the self-cleaning component on the suspended matter; the exhaust pipe is used to output the air blown into the second tube group, avoiding the problem of damage caused by excessive pressure in the second tube group.

[0016] Optionally, the blowing mechanism further includes a pressure relief member, the exhaust pipe extends vertically upward, and the pressure relief member is provided on the exhaust pipe.

[0017] By adopting the above technical solution, when the pressure in the second tube group reaches a certain range, the pressure relief component opens, and pressure relief and exhaust can be achieved through the exhaust pipe, thereby avoiding the problem of sewage overflow and reduced filtration effect caused by the provision of the exhaust pipe affecting the pressure in the second tube group.

[0018] Optionally, the blowing mechanism further includes a water-blocking and breathable membrane, and the water-blocking and breathable membrane cover is provided at one end of the exhaust pipe away from the second tube group.

[0019] By adopting the above technical solution, the sewage in the second pipe group can be prevented from being discharged through the exhaust pipe, which affects the sewage treatment effect; at the same time, the air in the second pipe group can be discharged, ensuring that the pressure in the second pipe group is within a reasonable range.

[0020] Optionally, the blowing mechanism includes a one-way valve, which is arranged in the first blowing pipe, and the one-way valve allows gas to be input into the second tube group from the blowing drive component.

[0021] By adopting the above technical solution, the overflow of sewage in the second tube group can be avoided, and at the same time, the purpose of blowing air into the second tube group can be achieved, thereby improving the uniformity of suspended matter in the sewage in the second tube group, helping to improve the filtration effect and reduce the risk of clogging of the ultrafiltration device.

[0022] Optionally, the blowing mechanism includes a second blowing pipe, which is arranged on a side of the first blowing pipe close to the first tube group, the second blowing pipe is connected to the first blowing pipe, and the second blowing pipe is used to blow air to cool the second tube group.

[0023] By adopting the above technical solution, the blowing drive component can blow air into the second blowing pipe, so that the second blowing pipe can achieve air blowing and cooling of the second tube group, so that the solubility of suspended matter in the sewage in the second tube group can be reduced when the temperature drops, thereby helping to optimize the filtering effect of the self-cleaning component on suspended matter, reduce the content of suspended matter entering the ultrafiltration device, thereby reducing the risk of suspended matter in the ultrafiltration device clogging the filter cap, and improving the reliability of sewage treatment.

[0024] Optionally, the blowing mechanism includes a telescopic member and a sealing plate, the fixed end of the telescopic member is connected to the second tube group, the movable end of the telescopic member is connected to one end of the sealing plate, the first blowing pipe and the second blowing pipe are both provided with an avoidance portion, the sealing plate is movably inserted into the avoidance portion, the sealing plate is provided with a through hole, the telescopic member drives the sealing plate to move so that the through hole of the sealing plate is selectively aligned with the first blowing pipe or the second blowing pipe.

[0025] By adopting the above technical solution, the telescopic part drives the sealing plate to slide in the avoidance part, so that the through hole on the sealing plate can be selectively aligned with the first blowing pipe or the second blowing pipe, so that the blowing drive part intermittently blows air into the second tube group through the first blowing pipe, avoiding continuous blowing into the second tube group, which causes suspended matter to accumulate above the inside of the second tube group and affect the uniformity, thereby affecting the filtering effect of the self-cleaning part, causing the self-cleaning function of the self-cleaning part to be frequently activated and not conducive to improving the filtering efficiency; and, through the sealing plate, the same blowing drive part can be used to blow air to the first blowing pipe and the second blowing pipe, thereby reducing costs.

[0026] Optionally, the sealing plate includes a first sealing portion, a second sealing portion and a ventilation portion, the first sealing portion and the second sealing portion are arranged on both sides of the ventilation portion, the through hole is arranged in the ventilation portion, and the cross-sectional area of ​​the first sealing portion and the cross-sectional area of ​​the second sealing portion are both larger than the flow area of ​​the first blowing pipe and the flow area of ​​the second blowing pipe.

[0027] By adopting the above technical solution, a first blocking portion and a second blocking portion are provided on both sides of the vent portion. When the vent portion is aligned with the first air blowing pipe or the second air blowing pipe by the drive of the telescopic member, the second blocking portion or the first blocking portion can achieve a blocking effect, and the cross-sectional areas of the first blocking portion and the second blocking portion are both larger than the flow areas of the first air blowing pipe and the second air blowing pipe, so as to ensure the reliable implementation of the blocking effect, thereby achieving the purpose of intermittently blowing air into the second tube group.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. The first pipe group is connected to the sewage treatment device, so that the sewage from the sewage treatment device flows through the first pipe group, the second pipe group and the third pipe group, and then enters the ultrafiltration device to realize the sewage treatment process; wherein, the second pipe group includes a first branch pipe and a second branch pipe arranged in parallel, and the first branch pipe and the second branch pipe are both connected with self-cleaning parts, so that the first branch pipe and the second branch pipe can both have the ability of suspended matter filtering and self-cleaning, thereby reducing the suspended matter content of the sewage entering the third pipe group and the ultrafiltration device, and reducing the risk of clogging through the self-cleaning function. At the same time, the setting of the self-cleaning parts can reduce the difficulty of cleaning suspended matter and the need for shutdown and maintenance, which helps to reduce labor intensity; the redundant setting of the second pipe group makes the second pipe group have higher reliability. In the event that one of the first branch pipe and the second branch pipe fails, the sewage can be self-cleaned and circulated through the other one, thereby ensuring the reliability of sewage circulation and treatment; first The sewage outlets of the self-cleaning parts on the branch pipe and the second branch pipe are connected to the same sewage collecting mechanism, and the sewage collecting mechanism is arranged between the first branch pipe and the second branch pipe, which helps to reasonably utilize space and reduce space occupancy. In addition, since only one sewage collecting mechanism is provided, it helps to conveniently clean the sewage and suspended matter flowing out of the sewage outlet; the two second discharge pipes of the third pipe group are respectively connected to the first branch pipe and the second branch pipe, the first end of the first discharge pipe is used to converge the sewage in the first branch pipe and the second branch pipe, and the second end of the first discharge pipe is connected to the ultrafiltration device, so that the sewage can flow into the ultrafiltration device for ultrafiltration and cement separation of the sewage; since the diameter of the first end of the first discharge pipe is larger than the diameter of the second end of the first discharge pipe, the sewage flow rate when flowing to the ultrafiltration device can be accelerated, thereby reducing the sedimentation of suspended matter in the sewage entering the ultrafiltration device, and the risk of clogging the ultrafiltration device when the sediment moves as a whole;

[0030] 2. The conversion element is used to connect and disconnect the first and second branch pipes from the first pipe group, allowing sewage in the first pipe group to flow to both the first and second branch pipes simultaneously, thereby improving sewage treatment efficiency. Alternatively, one of the first and second branch pipes can be connected to the first pipe group, with the other serving as a backup branch pipe, thereby improving the reliability of the second pipe group in filtering suspended matter in sewage and reducing the risk of clogging of the ultrafiltration device.

[0031] 3. When sewage flows from the first tube group to the second tube group, the flow rate of sewage will be accelerated due to the reduction of the flow area, which helps to reduce the deposition of suspended matter and reduce the difficulty of cleaning by the self-cleaning parts. At the same time, the floating of suspended matter helps to improve the cleaning effect of the self-cleaning parts on suspended matter, reduce the suspended matter content in the sewage flowing to the ultrafiltration device, and thus reduce the risk of clogging of the ultrafiltration device. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Schematic diagram of a sewage suspended solids filtration system with automatic cleaning function according to an embodiment of the present application.

[0033] Figure 2 Schematic diagram of the blowing mechanism of an embodiment of the present application.

[0034] Figure 3 It is a top view of the cooperation between the first air blowing tube and the second air blowing tube in an embodiment of the present application.

[0035] Figure 4 yes Figure 3 Cross-section view at AA in the middle.

[0036] Figure 5 This is a schematic diagram of the cooperation between the first air blowing pipe and the second air blowing pipe in an embodiment of the present application.

[0037] Figure 6 It is a schematic diagram of the cooperation between the telescopic member and the sealing plate in an embodiment of the present application.

[0038] Description of reference numerals:

[0039] 100. Sewage treatment device; 200. Ultrafiltration device; 1. Conveying mechanism; 11. First tube group; 121. First branch pipe; 122. Second branch pipe; 131. First discharge pipe; 132. Second discharge pipe; 14. Converter; 2. Self-cleaning mechanism; 21. Self-cleaning member; 211. Sewage outlet; 3. Sewage collecting mechanism; 4. Blowing mechanism; 41. First blowing pipe; 411. One-way valve; 42. Blowing drive member; 43. Exhaust pipe; 431. Pressure relief member; 432. Water-blocking and breathable membrane; 44. Second blowing pipe; 45. Telescopic member; 46. Sealing plate; 461. Through hole; 462. First sealing portion; 463. Second sealing portion; 464. Ventilation portion; 47. Avoiding portion. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1 -Attached Figure 6 The present application is further described in detail. In this embodiment, unless otherwise specified, the terms "connected", "connected" and "fixed" are understood in a broad sense, including fixed connection, detachable connection, connection to form an integral structure, mechanical connection, electrical connection, direct connection, indirect connection through an intermediary, internal connection and interaction between two elements, and can be understood based on the specific circumstances.

[0041] In this application, unless otherwise expressly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or the first and second features being in contact not directly but through another feature between them. Moreover, in the description of this embodiment, the terms "above", "below", "right", and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise specified, orientation words such as "inside" and "outside" used in this application refer to the outlines of the corresponding components themselves.

[0042] like Figure 1 As shown, the present invention discloses a sewage suspended solids filtration system with an automatic cleaning function (hereinafter referred to as the "system"). The system is installed between a sewage treatment device 100 and an ultrafiltration device 200. The system includes a conveying mechanism 1, a self-cleaning mechanism 2, and a sewage collection mechanism 3. The system is used to initially filter suspended solids before the ultrafiltration device 200 and achieve self-cleaning, thereby reducing the risk of clogging of the ultrafiltration device 200 and the difficulty of cleaning.

[0043] The conveying mechanism 1 includes a first tube group 11, a second tube group, and a third tube group. The first end of the first tube group 11 is connected to the sewage treatment device 100, the two ends of the second tube group are respectively connected to the second end of the first tube group 11 and the third tube group, and the third tube group is connected to the ultrafiltration device 200. The first tube group 11 is connected to the sewage treatment device 100, so that sewage from the sewage treatment device 100 flows through the first tube group 11, the second tube group, and the third tube group before entering the ultrafiltration device 200, completing the sewage treatment process. The sewage treatment device 100 can be a sewage treatment tank, such as a secondary nitrification tank, which includes the necessary sewage treatment structures for temporarily storing sewage and allowing the sewage to flow into the system. After preliminary treatment, the sewage flows into the ultrafiltration device 200 for further purification to meet the required discharge standards.

[0044] like Figure 1As shown, the second tube group includes a first branch pipe 121 and a second branch pipe 122, which are arranged in parallel. The third tube group includes a first discharge pipe 131 and at least two second discharge pipes 132. The self-cleaning mechanism 2 includes at least two self-cleaning components 21, each of which has an input end, an output end, and a sewage outlet 211. The input ends of the two self-cleaning components 21 are respectively connected to the first branch pipe 121 and the second branch pipe 122, and the second discharge pipe 132 is arranged corresponding to the output end of the self-cleaning component 21. This enables the first branch pipe 121 and the second branch pipe 122 to both have suspended matter filtering and self-cleaning capabilities, reducing the suspended matter content of sewage entering the third tube group and the ultrafiltration device 200, and reducing the risk of clogging through the self-cleaning function. At the same time, the provision of the self-cleaning components 21 can reduce the difficulty of cleaning suspended matter and the need for downtime for maintenance, helping to reduce labor intensity. The redundant configuration of the second pipe group ensures high reliability. If one of the first branch pipe 121 and the second branch pipe 122 fails, the other branch pipe can be used to self-clean and circulate sewage, ensuring the reliability of sewage circulation and treatment. The first branch pipe 121 and the second branch pipe 122 can also be connected simultaneously, improving efficiency. The first pipe group 11 can be provided with two first ends and one second end, with the first ends of the two first pipe groups 11 connected to the sewage treatment device 100 to improve output efficiency. Both first ends converge at the second end of the first pipe group 11, which is then connected to the second pipe group. Multiple self-cleaning components 21 can be connected to the first branch pipe 121 or the second branch pipe 122. When the self-cleaning components 21 are connected in parallel, the number of second discharge pipes 132 matches the number of self-cleaning components 21. When the self-cleaning components 21 on the first branch pipe 121 are connected in series, two second discharge pipes 132 are provided, one corresponding to the number of first branch pipes 121 and second branch pipes 122, so that the output ends of the self-cleaning components 21 can be connected to the second discharge pipes 132.

[0045] like Figure 1As shown, the diameter of the first end of the first discharge pipe 131 is larger than the diameter of the second end of the first discharge pipe 131, thereby accelerating the flow rate of the sewage as it flows into the ultrafiltration device 200 and reducing the risk of clogging the ultrafiltration device 200 due to the sedimentation of suspended matter in the sewage entering the ultrafiltration device 200. The first end of the second discharge pipe 132 is connected to the output end of the self-cleaning element 21, and the second ends of the two second discharge pipes 132 are both connected to the first end of the first discharge pipe 131, the second end of which is connected to the ultrafiltration device 200. The two second discharge pipes 132 of the third pipe group are respectively connected to the first branch pipe 121 and the second branch pipe 122. The first end of the first discharge pipe 131 is used to merge the sewage in the first branch pipe 121 and the second branch pipe 122, and the second end of the first discharge pipe 131 is connected to the ultrafiltration device 200, allowing the sewage to flow into the ultrafiltration device 200 for ultrafiltration and cement separation. The ultrafiltration device 200 can be equipped with a suitable ultrafiltration device; the self-cleaning element 21 can be a self-cleaning filter, which can filter the sewage and clean itself; the self-cleaning filter includes a filter body, a pressure gauge and an electrical control box. A pressure gauge is provided at the front and rear ends of the filter body to monitor the pressure difference between the front and rear ends of the filter body. When the pressure difference is higher than 0.1 MPa, the electric drain valve provided on the filter body automatically opens, and the steel brush motor in the filter body automatically starts, driving the steel brush to clean the impurities on the filter screen in the filter body and discharge them with the sewage through the drain valve, thereby reducing the impurities entering the ultrafiltration device 200 and reducing the risk of clogging; the self-cleaning filter automatically cleans itself by detecting the pressure difference, and does not require manual cleaning, which can avoid human operational errors and reduce labor intensity. The self-cleaning filter can be selected according to the needs to meet the needs of use. In view of the existing related technologies, its specific structure and principle will not be described here.

[0046] The sewage collection mechanism 3 is located between the first branch pipe 121 and the second branch pipe 122, and the sewage outlet 211 of the self-cleaning member 21 is connected to the sewage collection mechanism 3. The sewage outlets 211 of the self-cleaning members 21 on the first branch pipe 121 and the second branch pipe 122 are connected to the same sewage collection mechanism 3. The sewage collection mechanism 3 is located between the first branch pipe 121 and the second branch pipe 122, which helps to rationally utilize space and reduce space occupancy. Furthermore, since only one sewage collection mechanism 3 is provided, it facilitates the convenient cleaning of sewage and suspended matter flowing out of the sewage outlet 211. The sewage collection mechanism 3 can be a movable box structure.

[0047] like Figure 1As shown, optionally, the diameter of the first branch pipe 121 and the diameter of the second branch pipe 122 are both smaller than the diameter of the second end of the first tube assembly 11. As sewage flows from the first tube assembly 11 to the second tube assembly, the reduced flow area accelerates the flow rate, helping to reduce the deposition of suspended matter and making cleaning easier for the self-cleaning element 21. Furthermore, the floating of suspended matter helps improve the cleaning effectiveness of the self-cleaning element 21, avoiding the problem of poor filtration due to uneven distribution of suspended matter. This, in turn, reduces the suspended matter content in the sewage flowing to the ultrafiltration device 200, thereby reducing the risk of clogging of the ultrafiltration device 200.

[0048] Optionally, the conveying mechanism 1 further includes a conversion member 14. The conversion member 14 connects the second end of the first tube group 11, the first branch pipe 121, and the second branch pipe 122, respectively. The conversion member 14 is used to allow the sewage in the first tube group 11 to flow to the first branch pipe 121 and / or the second branch pipe 122. The conversion member 14 is used to connect and disconnect the first branch pipe 121 and the second branch pipe 122 from the first tube group 11, so that the sewage in the first tube group 11 can flow to the first branch pipe 121 and the second branch pipe 122 simultaneously, thereby improving the sewage treatment efficiency; or, to connect one of the first branch pipe 121 and the second branch pipe 122 to the first tube group 11, while the other serves as a backup branch pipe, thereby improving the reliability of the second tube group in filtering suspended matter in the sewage and reducing the risk of clogging of the ultrafiltration device 200. The conversion member 14 can be a solenoid valve, or, depending on the usage requirements, a two-position three-way valve or a three-position four-way valve.

[0049] like Figure 1 and Figure 2 As shown, optionally, the system also includes a blowing mechanism 4. The blowing mechanism 4 includes a first blowing pipe 41, a blowing drive 42 and an exhaust pipe 43. The first end of the first blowing pipe 41 is connected to the second tube group, and the output end of the blowing drive 42 is connected to the second end of the first blowing pipe 41. The blowing drive 42 blows air into the first blowing pipe 41, thereby stirring the sewage suspended matter in the second tube group, which helps to improve the uniformity of the suspended matter, reduce sedimentation, and improve the filtering effect of the self-cleaning member 21 on the suspended matter. The exhaust pipe 43 is provided on one side of the first blowing pipe 41, and the exhaust pipe 43 is connected to the second tube group. The exhaust pipe 43 is used to output the air blown into the second tube group to avoid the problem of damage caused by excessive pressure in the second tube group. The blowing drive 42 can be an air pump, which is supported on one side of the second tube group by a support structure.

[0050] like Figure 2 、 Figure 3 and Figure 4As shown, the blowing mechanism 4 optionally includes a one-way valve 411. The one-way valve 411 is disposed within the first blowing pipe 41 and allows air to be delivered from the blowing drive 42 into the second tube assembly. The provision of the one-way valve 411 prevents wastewater from overflowing from the second tube assembly while simultaneously allowing air to be blown into the second tube assembly, thereby improving the uniformity of suspended matter in the wastewater within the second tube assembly. This helps enhance the filtration effectiveness of the self-cleaning element 21 and reduces the risk of clogging of the ultrafiltration device 200.

[0051] Optionally, the air blowing mechanism 4 further includes a water-blocking, breathable membrane 432. This membrane 432 covers the end of the exhaust pipe 43 away from the second tube assembly. This membrane prevents wastewater from the second tube assembly from being discharged through the exhaust pipe 43, potentially impacting wastewater treatment. It also allows air to escape from the second tube assembly, ensuring the pressure within the second tube assembly remains within a reasonable range. The membrane 432 can be made of a suitable material, such as an ePTFE membrane, to ensure air permeability without water leakage.

[0052] like Figure 2 、 Figure 3 and Figure 4 As shown, the blowing mechanism 4 optionally further includes a pressure relief member 431. The exhaust pipe 43 extends vertically upward, and the pressure relief member 431 is disposed on the exhaust pipe 43. When the pressure within the second tube group reaches a certain range, the pressure relief member 431 opens, allowing pressure relief and exhaust through the exhaust pipe 43, thereby maintaining the pressure within the second tube group within a certain range. This prevents the exhaust pipe 43 from affecting the pressure within the second tube group, causing the pressure to be too high or too low, thereby causing sewage overflow and reduced filtration efficiency. The pressure relief member 431 can be a pressure relief valve, the opening pressure of which can be set as needed.

[0053] Optionally, the air blowing mechanism 4 includes a second air blowing pipe 44, which is located on a side of the first air blowing pipe 41 near the first tube group 11. The second air blowing pipe 44 is connected to the first air blowing pipe 41 and is used to cool the second tube group by blowing air. The air blowing drive 42 can blow air into the second air blowing pipe 44, causing the second air blowing pipe 44 to cool the second tube group by blowing air. This reduces the solubility of some water-soluble suspended matter in the sewage in the second tube group as the temperature drops. This helps optimize the filtration effect of the self-cleaning element 21 on suspended matter, reduces the amount of suspended matter entering the ultrafiltration device 200, and thus reduces the risk of suspended matter clogging the filter cap in the ultrafiltration device 200, thereby improving the reliability of sewage treatment. The air blowing area of ​​the second air blowing pipe 44 can be set to a larger range to optimize the cooling effect, reduce the solubility of suspended matter in the second tube group, and improve the filtration effect. A gap is left between the lower end of the second air blowing pipe 44 and the second tube group to facilitate the discharge of gas from the second air blowing pipe 44.

[0054] like Figure 2 、 Figure 5 and Figure 6 As shown, optionally, the blowing mechanism 4 includes a telescopic member 45 and a sealing plate 46, wherein the fixed end of the telescopic member 45 is connected to the second tube group, and the movable end of the telescopic member 45 is connected to one end of the sealing plate 46. The telescopic member 45 can be a structure that can achieve telescopic movement, such as a cylinder, a hydraulic cylinder, or an electric telescopic rod. The first blowing pipe 41 and the second blowing pipe 44 are both provided with an avoidance portion 47, and the sealing plate 46 is movably arranged in the avoidance portion 47. The sealing plate 46 is provided with a through hole 461, and the telescopic member 45 drives the sealing plate 46 to move, so that the through hole 461 of the sealing plate 46 is selectively aligned with the first blowing pipe 41 or the second blowing pipe 44.

[0055] The telescopic member 45 drives the sealing plate 46 to slide within the avoidance portion 47, so that the through hole 461 on the sealing plate 46 can be selectively aligned with the first air blowing tube 41 or the second air blowing tube 44, allowing the blowing driver 42 to intermittently blow air into the second tube group through the first air blowing tube 41. This avoids continuous blowing into the second tube group, which would cause suspended matter to accumulate above the interior of the second tube group and affect uniformity, thereby affecting the filtration effect of the self-cleaning member 21, causing the self-cleaning function of the self-cleaning member 21 to be frequently activated, which is not conducive to improving filtration efficiency. Furthermore, by moving the sealing plate 46, the same blowing driver 42 can be used to blow air to the first air blowing tube 41 and the second air blowing tube 44 separately, which helps to reduce costs.

[0056] like Figure 2 、 Figure 5 and Figure 6 As shown, optionally, the sealing plate 46 includes a first sealing portion 462, a second sealing portion 463 and a vent 464. The first sealing portion 462 and the second sealing portion 463 are respectively arranged on both sides of the vent 464, and the through hole 461 is arranged on the vent 464. The first sealing portion 462 and the second sealing portion 463 are arranged on both sides of the vent 464. When the vent 464 is driven by the telescopic member 45 so that the vent 464 is aligned with the first blowing pipe 41 or the second blowing pipe 44, the second sealing portion 463 or the first sealing portion 462 can achieve a blocking effect. The cross-sectional area of ​​the first sealing portion 462 and the cross-sectional area of ​​the second sealing portion 463 are both larger than the flow area of ​​the first blowing pipe 41 and the flow area of ​​the second blowing pipe 44, so as to ensure the reliable realization of the blocking effect, thereby achieving the purpose of intermittently blowing air into the second tube group. The sealing plate 46 is slidably connected to the avoidance portion 47, which may be a groove-shaped structure. The avoidance portion 47 supports the sealing plate 46 to avoid the sealing plate 46 sliding without support and affecting the reliability of use.

[0057] It can be understood that the system also includes necessary structures for connection, support, driving, limiting, sealing and control functions so that the system can operate normally; parameters such as the shape, size, material and setting quantity of each part of the system can be determined as needed to achieve the corresponding functions.

[0058] The implementation principle of the sewage suspended solids filtering system with automatic cleaning function in the embodiment of the present application is as follows: the sewage in the sewage treatment device 100 flows from the first pipe group 11 to the conversion member 14, so that at least one of the first branch pipe 121 or the second branch pipe 122 of the second pipe group is connected to the first pipe group 11, and on the second pipe group, the blowing drive member 42 intermittently blows air into the second pipe group to make the suspended solids in the sewage float and be evenly distributed, and the second blowing pipe 44 cools the second pipe group to reduce the solubility of the suspended solids in the sewage, so as to improve the filtering efficiency of the self-cleaning member 21; when the suspended solids filtered out of the self-cleaning member 21 are large, the self-cleaning member 21 is turned on. The self-cleaning function of the cleaning element 21 is activated to clean itself, so as to continuously and reliably achieve the filtering effect and reduce the suspended matter entering the ultrafiltration device 200; after the sewage in the second tube group is initially filtered, it flows to the third tube group. Under the setting of the smaller diameter of the third tube group, the sewage flow rate is accelerated, so that the flow rate of the sewage entering the ultrafiltration device 200 is faster, avoiding the problem of suspended matter deposition caused by the slow flow rate and clogging the filter cap of the ultrafiltration device 200, improving reliability, and alleviating the problem of downtime caused by clogging of the ultrafiltration device 200 affecting the treatment efficiency and sewage treatment volume, as well as the high labor intensity caused by cleaning.

[0059] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A sewage suspended solids filtration system with automatic cleaning function, characterized in that: It is located between the sewage treatment device (100) and the ultrafiltration device (200), and comprises: A conveying mechanism (1) comprises a first pipe group (11), a second pipe group and a third pipe group, wherein the first end of the first pipe group (11) is connected to the sewage treatment device (100), the two ends of the second pipe group are respectively connected to the second end of the first pipe group (11) and the third pipe group, the second pipe group comprises a first branch pipe (121) and a second branch pipe (122), the first branch pipe (121) and the second branch pipe (122) are arranged in parallel, and the third pipe group comprises a first discharge pipe (131) and at least two second discharge pipes (132); A self-cleaning mechanism (2) comprises at least two self-cleaning members (21), each of the self-cleaning members (21) being provided with an input end, an output end and a sewage outlet (211), the input ends of the two self-cleaning members (21) being connected to the first branch pipe (121) and the second branch pipe (122) respectively, the second discharge pipe (132) being provided corresponding to the output end of the self-cleaning member (21), the first end of the second discharge pipe (132) being connected to the output end of the self-cleaning member (21), the second ends of the two second discharge pipes (132) being connected to the first end of the first discharge pipe (131), the diameter of the first end of the first discharge pipe (131) being larger than the diameter of the second end of the first discharge pipe (131), and the second end of the first discharge pipe (131) being connected to the ultrafiltration device (200); The sewage collecting mechanism (3) is provided between the first branch pipe (121) and the second branch pipe (122), and the sewage outlet (211) of the self-cleaning member (21) is connected to the sewage collecting mechanism (3).

2. The sewage suspended solids filtration system with automatic cleaning function according to claim 1 is characterized in that: The conveying mechanism (1) further comprises a conversion member (14), wherein the conversion member (14) is respectively connected to the second end of the first pipe group (11), the first branch pipe (121), and the second branch pipe (122), and the conversion member (14) is used to allow the sewage in the first pipe group (11) to flow to the first branch pipe (121) and / or the second branch pipe (122).

3. The sewage suspended solids filtration system with automatic cleaning function according to claim 1 is characterized in that: The diameter of the first branch pipe (121) and the diameter of the second branch pipe (122) are both smaller than the diameter of the second end of the first pipe group (11).

4. The sewage suspended solids filtration system with automatic cleaning function according to claim 1 is characterized in that: The device further comprises an air blowing mechanism (4), the air blowing mechanism (4) comprising a first air blowing pipe (41), an air blowing driving member (42) and an exhaust pipe (43), wherein the first end of the first air blowing pipe (41) is connected to the second tube group, the output end of the air blowing driving member (42) is connected to the second end of the first air blowing pipe (41), and the exhaust pipe (43) is provided on one side of the first air blowing pipe (41), and the exhaust pipe (43) is connected to the second tube group.

5. The sewage suspended solids filtration system with automatic cleaning function according to claim 4 is characterized in that: The air blowing mechanism (4) further comprises a pressure relief member (431), the exhaust pipe (43) extends vertically upward, and the pressure relief member (431) is provided on the exhaust pipe (43).

6. The sewage suspended solids filtration system with automatic cleaning function according to claim 4 is characterized in that: The air blowing mechanism (4) further comprises a water-blocking and air-permeable membrane (432), wherein the water-blocking and air-permeable membrane (432) is covered at one end of the exhaust pipe (43) away from the second pipe group.

7. The sewage suspended solids filtration system with automatic cleaning function according to claim 4 is characterized in that: The blowing mechanism (4) comprises a one-way valve (411), which is arranged in the first blowing pipe (41). The one-way valve (411) allows gas to be input from the blowing drive member (42) into the second pipe group.

8. The sewage suspended solids filtration system with automatic cleaning function according to claim 4 is characterized in that: The blowing mechanism (4) comprises a second blowing pipe (44), the second blowing pipe (44) being arranged on a side of the first blowing pipe (41) close to the first tube group (11), the second blowing pipe (44) being connected to the first blowing pipe (41), and the second blowing pipe (44) being used for blowing air to cool the second tube group.

9. The sewage suspended solids filtration system with automatic cleaning function according to claim 8, characterized in that: The blowing mechanism (4) comprises a telescopic member (45) and a sealing plate (46), wherein the fixed end of the telescopic member (45) is connected to the second tube group, and the movable end of the telescopic member (45) is connected to one end of the sealing plate (46), the first blowing tube (41) and the second blowing tube (44) are both provided with a avoidance portion (47), the sealing plate (46) is movably arranged in the avoidance portion (47), and the sealing plate (46) is provided with a through hole (461), and the telescopic member (45) drives the sealing plate (46) to move, so that the through hole (461) of the sealing plate (46) is selectively aligned with the first blowing tube (41) or the second blowing tube (44).

10. The sewage suspended solids filtration system with automatic cleaning function according to claim 9, characterized in that: The sealing plate (46) comprises a first sealing portion (462), a second sealing portion (463) and a vent portion (464); the first sealing portion (462) and the second sealing portion (463) are respectively arranged on both sides of the vent portion (464); the through hole (461) is arranged in the vent portion (464); the cross-sectional area of ​​the first sealing portion (462) and the cross-sectional area of ​​the second sealing portion (463) are both larger than the flow area of ​​the first blowing pipe (41) and the flow area of ​​the second blowing pipe (44).

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