Sewage collecting tank with filtering function

Abstract

The invention discloses a sewage collection pool with a filtering function, and relates to the field of sewage treatment.The sewage collection pool is provided with a separation net, a sliding plate and arc-shaped blades, foreign matter is guided into an overhaul well through the natural separation effect of water flow when the water amount is small, foreign matter retention or blockage is avoided, and the continuity and efficiency of sewage filtering are guaranteed; the system utilizes kinetic energy of water flow to drive the separation assembly to rotate, efficient filtering is achieved through multi-stage foreign matter separation, particularly under the condition of large water volume, stage treatment of foreign matter is achieved through convection of an arc pipe and recovery design of a backflow pipe, the load of the separation assembly is reduced, smooth passing of sewage is guaranteed, and under the extreme working condition, the separation efficiency is improved. The protection top sealing design of the system provides water level limiting and safety functions, and when the water accumulation speed exceeds the water drainage speed, sewage and the separation assembly cooperatively operate through the overhaul well, so that foreign matter can be rapidly separated and gathered into the well body.

Description

Technical Field

[0001] The present invention relates to the field of sewage treatment, and particularly to a sewage collection pipeline with a filtering function. Background Art

[0002] In the urban sewage collection and treatment system, the sewage collection tank is the core link of front-end pretreatment, and the performance of its filtering device directly affects the subsequent treatment efficiency and the stability of the drainage system. With the acceleration of urbanization and the frequent occurrence of extreme weather, sewage collection faces severe challenges such as large fluctuations in water volume (from small-flow steady discharge to instantaneous peak flow during rainstorms) and complex foreign matter components (including floating objects such as plastic garbage, branches, foam, and suspended solids such as sediment and gravel).

[0003] Due to the limitations of the design principle, traditional filtering devices are difficult to operate efficiently and stably under different water volume and water level conditions. Specifically, when the water volume is small, static filter meshes are easily blocked due to the retention of foreign matter, resulting in a decrease in water passing efficiency; when the water volume suddenly increases, due to the lack of a dynamic separation mechanism, high-speed water flow carries foreign matter and directly penetrates the filter layer, or equipment failures are caused due to overload. At the same time, existing devices mostly rely on electric drive to rotate the filtering components or perform backwashing, and are prone to losing the treatment ability due to power outages under extreme working conditions such as rainstorms and typhoons. In addition, the single drainage channel design cannot respond in time when the water accumulates too quickly, often leading to wellhead overflow and increasing the risk of subsequent pipeline blockage.

[0004] Although some technologies have tried to improve the performance by optimizing the filter mesh structure or adding mechanical drive components, the core problems of adaptive adjustment to different water volumes, multi-stage foreign matter separation, and non-powered continuous operation have not been solved. Therefore, there is an urgent need for a new type of filtering device that can dynamically adjust the filtering mechanism according to the change of water volume, has both multi-stage separation and anti-blocking capabilities, and does not require external energy, so as to meet the high-efficiency and reliability requirements of sewage collection under complex working conditions. Summary of the Invention

[0005] The purpose of the present invention is to provide a sewage collection tank with a filtering function to solve the problems that in areas with a large amount of sewage, the sewage discharge speed is slow and it is extremely easy to be blocked, affecting drainage.

[0006] A sewage collection tank with a filtering function includes a water accumulation component connecting a drainage channel and an inspection well, and a pool body connected to one side of the water accumulation component. A filtering assembly is installed on the water accumulation component, and the filtering assembly includes: A housing; A separation component rotates axially in the housing, including a slide plate and a number of blades fixed on the surface. The inner wall of the slide plate is filled with a separation mesh for sewage filtration; One end of the pressure reducing component is located inside the separation component and is connected, used for decelerating and refluxing and dispersing large-flow sewage, including an arc tube and a reflux tube communicated with the top end of the arc tube; When the water volume is small, the water flow passes through the separation net, and a small amount of foreign matters are filtered inside the separation component. When the water volume is medium, the water flow passes through the separation net and pushes the blade to move, driving the slide plate and the separation net to rotate simultaneously, and the impurities fall during the rolling. When the water volume is large, the water body in the drainage channel directly flows into the arc tube, and after the water level of the arc tube rises under the impact of the water flow for the first time to separate foreign matters, the water body returns to the separation component through the reflux tube for secondary filtration treatment. When flooded, the water flow enters from the drainage channel and the inspection well, passes through the total filtration assembly and drives it to rotate rapidly to disperse foreign matters.

[0007] As a further description of the above technical solution: The water accumulation component includes a water accumulation tray fixed to the lower surface of the housing, a water draining plate is inclined and fixed on the upper surface of the water accumulation tray, the water draining plate is located at the bottom of the separation component, and a water outlet pipe communicated with the pool body is installed on the inner wall of the water accumulation tray.

[0008] As a further description of the above technical solution: The inspection well includes a well body communicated with the housing, a protection cap is arranged at the top of the well body, a base is arranged at the bottom end of the well body, and a transition plate is arranged on one side of the base.

[0009] As a further description of the above technical solution: The separation component further includes a wheel ring fixed to one side of the slide plate and a rotating head fixed to the other end of the slide plate, and the rotating head penetrates and rotates on the housing, and the separation component is arranged in a conical shape.

[0010] As a further description of the above technical solution: The total filtration assembly further includes a water inlet pipe rotatably arranged on the inner wall of the rotating head, several guide wheels for supporting the rotation of the wheel ring are fixed on the inner wall of the housing, and a sealing plate for protecting one side of the wheel ring is fixed on the inner wall of the housing.

[0011] As a further description of the above technical solution: The pressure reducing component further includes a fixture fixed on the surface of the arc tube, two support plates are symmetrically fixed on the surface of the fixture, and the support plates are fixedly connected to one side of the housing.

[0012] As a further description of the above technical solution: The top end of the arc tube is arranged in an inclined shape for floating foreign matters to overflow.

[0013] As a further description of the above technical solution: Both the separation net and the slide plate are arranged in a spiral shape, and the aperture of the separation net gradually increases from top to bottom.

[0014] As a further description of the above technical solution: The bottom end of the arc tube and the water inlet pipe are located at the same axial position, and the bottom end of the arc tube is arranged in an inclined shape.

[0015] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows: When this solution is in use, when the water volume is small, foreign objects are difficult to be carried. The water flow passes through the separation net into the water collecting tray and enters the pool body through the water outlet pipe. When the water volume increases, the water flow carries a small amount of foreign objects into the separation net through the water inlet pipe. The water flow passes through the separation net, and under the action of the arc-shaped blades, the slide plate and the separation net start to rotate. The foreign objects separated by the separation net fall during rolling until they enter the inspection well, realizing the efficient separation and filtration of sewage. Moreover, the overall design can adapt to the filtration of a large number of foreign objects without clogging, ensuring that the efficiency of sewage filtration is not affected.

[0016] When there is a large water volume, the water body in the drainage channel passes through the water inlet pipe at a relatively high flow rate and directly flows into the arc pipe at a relatively high flow rate, forming a convection at the bottom of the arc pipe. When the water volume does not reach the threshold, the water body falling by gravity in the arc pipe forms a convection with the water flow in the water inlet pipe and falls. When the threshold is reached, the water level in the arc pipe rises to the top of the return pipe under the impact of the water flow. Based on the property of floating on water, larger floating foreign objects overflow successively under the action of multiple foreign objects for the first separation of foreign objects. The water flow and some foreign objects flow back into the separation component through the water body in the return pipe. The sewage drives the separation component to rotate, and the remaining foreign objects are carried by the separation component and roll down to achieve secondary filtration treatment. It can achieve two-stage foreign object separation after a large amount of foreign objects enter with a large water volume, pre-overflow and separate the too-large foreign objects, reducing the filtration load of the separation component. Driven by a large water volume, the separation component rotates relatively fast, effectively ensuring the separation of foreign objects from the sewage after sequential filtration and ensuring that the passing efficiency of large-flow sewage does not decrease with the increase in flow rate.

[0017] When water accumulates too quickly and submerges the protection cap, the water flow enters from the drainage channel and the inspection well simultaneously. The mixed water flow passes through the separation component and drives it to rotate rapidly to disperse foreign objects. When the drainage speed of the drainage channel cannot keep up with the water accumulation speed, the water flow overflows to the top of the well body and enters. The water flow at this position enters the water collecting tray through the water draining plate. And if the water level increases, the water flow can also enter the separation component, ensuring that the submerged water level at this position does not exceed the protection cap, playing an insurance role. And the separation component under rapid rotation continuously flips the internal foreign objects to keep them floating, ensuring the continuous passing of sewage. When the water level drops, only the drainage channel discharges water. At this time, under the action of the residual water flow, it can drive the separation component to rotate and introduce the foreign objects into the well body to converge; The above method realizes the differential response treatment for different water levels, and there will be no blockage in the overall sewage treatment. Moreover, combined with the multi-stage separation and convergence of foreign objects, it can continuously ensure the best sewage passing performance and is convenient for the unified cleaning of foreign objects in the later stage. The whole does not require power supply and has strong adaptability and stability for sewage treatment in extreme weather. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the buried state of the present invention Figure 2 Stereoscopic schematic diagram of a part of the present invention; Figure 3 Stereoscopic sectional schematic diagram of a part of the present invention; Figure 4 Stereoscopic schematic diagram of the overall filtration assembly of the present invention; Figure 5 Cross-sectional schematic diagram of the overall filtration assembly of the present invention; Figure 6 Structural schematic diagram of the separation component of the present invention; Figure 7 Explosion schematic diagram of the overall filtration assembly of the present invention.

[0019] Legend description: 10. Overall filtration assembly; 11. Separation component; 111. Slide plate; 112. Separation net; 113. Blade; 114. Ring; 115. Rotating head; 12. Housing; 13. Pressure reduction component; 131. Arc tube; 132. Return pipe; 133. Clamp; 134. Support plate; 14. Guide wheel; 15. Sealing plate; 16. Water inlet pipe; 20. Water accumulation component; 21. Water accumulation tray; 22. Drainage plate; 23. Water outlet pipe; 30. Drainage channel; 40. Pool body; 50. Inspection well; 51. Well body; 52. Protection cap; 53. Base; 54. Transition plate. Specific implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] As Figure 1 - Figure 7 shown, the present invention provides: a sewage collection pool with a filtering function, including a water accumulation component 20 connecting the drainage channel 30 and the inspection well 50, and a pool body 40 connected to one side of the water accumulation component 20. A filtering assembly 10 is installed on the water accumulation component 20. The filtering assembly 10 includes a housing 12. A separation component 11 that rotates axially in the housing 12. The separation component 11 includes a slide plate 111 and a plurality of blades 113 fixed on the surface. The inner wall of the slide plate 111 is filled with a separation net 112 for filtering sewage.

[0022] Based on the fact that under a relatively large water flow rate, the accumulation speed of foreign matters in the separation net 112 and the slide plate 111 is relatively fast. The foreign matters are flipped to make them fall naturally. At the same time, the water flow slides on the surface of the spiral slide plate 111, which can accelerate the speed of the flipped foreign matters, enabling a small amount of water flow to carry the foreign matters and quickly fall onto the water drainage plate 22. The small amount of water flow passes through the water drainage plate 22 and enters the water accumulation tray 21. This method can achieve rapid separation of a large amount of foreign matters under a large flow rate, avoiding affecting the passing performance of the sewage.

[0023] One end of the pressure reduction component 13 is located inside and communicated with the separation component 11, and is used for decelerating and refluxing and dispersing the large-flow sewage, including an arc pipe 131 and a reflux pipe 132 communicated with the top end of the arc pipe 131.

[0024] When the water volume is small, the water flow passes through the separation net 112, and a small amount of foreign matters are filtered inside the separation component 11. When the water volume is medium, the water flow passes through the separation net 112 and pushes the blade 113 to move, driving the slide plate 111 and the separation net 112 to rotate simultaneously, and the impurities fall during the rolling. When the water volume is large, the water body in the drainage channel 30 directly flows into the arc pipe 131, and after the water level of the arc pipe 131 rises under the impact of the water flow for the first time to separate foreign matters, the water body flows back through the reflux pipe 132 and enters the separation component 11 for secondary filtration treatment. When submerged, the water flow enters from the drainage channel 30 and the inspection well 50, passes through the total filtration assembly 10 and drives it to rotate rapidly to disperse foreign matters.

[0025] Through the design of the separation net 112, the slide plate 111 and the arc-shaped blade 113 in this solution, when the water volume is small, the foreign matters are guided into the inspection well 50 by relying on the natural separation effect of the water flow, avoiding the retention or blockage of foreign matters, and ensuring the continuity and efficiency of sewage filtration. When the water volume increases, the system uses the kinetic energy of the water flow to drive the separation component 11 to rotate, and realizes efficient filtration through multi-stage foreign matter separation. Especially in the case of a large water volume, through the convection of the arc pipe 131 and the recycling design of the reflux pipe 132, the hierarchical treatment of foreign matters is realized, which not only reduces the load of the separation component 11, but also ensures the smooth passage of the sewage.

[0026] Under extreme working conditions, the protection capping 52 design of the system provides a water level limit and insurance function. When the water accumulation speed exceeds the drainage speed, the sewage operates in coordination with the inspection well 50 and the separation component 11, enabling the foreign matters to be quickly separated and converged into the well body 51. The overall structure does not require electric drive, and relies on the water flow energy to achieve adaptive regulation, ensuring the stability of the system operation under extreme weather conditions, and at the same time facilitating the unified cleaning of foreign matters in the later stage, providing a reliable guarantee for sewage treatment in a complex water volume environment.

[0027] Specifically, such as Figure 3 and Figure 4As shown: The water accumulation component 20 includes a water accumulation tray 21 fixed to the lower surface of the housing 12. A water draining plate 22 is inclined and fixed to the upper surface of the water accumulation tray 21. The water draining plate 22 is located at the bottom of the separation component 11. A water outlet pipe 23 communicating with the pool body 40 is installed on the inner wall of the water accumulation tray 21.

[0028] By providing the water accumulation tray 21, the water accumulation tray 21 can gather sewage and introduce it into the pool body 40 through the water outlet pipe 23. The water draining plate 22 installed thereon can return the small amount of sewage flowing out from the separation component 11.

[0029] Specifically, as Figure 3 As shown: The inspection well 50 includes a well body 51 communicating with the housing 12. A protective capping 52 is provided at the top of the well body 51. A base 53 is provided at the bottom end of the well body 51, and a transition plate 54 is provided on one side of the base 53.

[0030] By providing the protective capping 52, the protective capping 52 has a two-layer structure. One layer is the outermost manhole cover, and the other layer is a large-gap protective net cover below the manhole cover. When needed, the manhole cover can be opened to introduce sewage. The protective net cover can prevent people from falling and keep the water flow from being affected; Among them, the transition plate 54 can keep the foreign objects on the water draining plate 22 enter the base 53 through the action of the transition plate 54.

[0031] Specifically, as Figure 6 As shown: The separation component 11 further includes a wheel ring 114 fixed to one side of the sliding plate 111, and a rotating head 115 fixed to the other end of the sliding plate 111. The rotating head 115 penetrates and rotates on the housing 12. The separation component 11 is arranged in a conical shape.

[0032] The wheel ring 114 can support one side of the sliding plate 111, and at the same time, the rotating head 115 supports the other side of the sliding plate 111 to keep the separation component 11 rotating stably. Among them, the separation component 11 is arranged in a conical shape, which can form an inclined plane inside to guide the foreign objects to roll.

[0033] Specifically, as Figure 3 and Figure 5 As shown: The filtration assembly 10 further includes a water inlet pipe 16 rotatably arranged on the inner wall of the rotating head 115. A plurality of guide wheels 14 for supporting the rotation of the wheel ring 114 are fixed to the inner wall of the housing 12. A sealing plate 15 for protecting one side of the wheel ring 114 is fixed to the inner wall of the housing 12.

[0034] By setting the water inlet pipe 16, the water inlet pipe 16 penetrates through the rotating head 115. The rotating head 115 rotates on the surface of the water inlet pipe 16. While maintaining rotational support, sewage can be connected. By setting the guide wheel 14, the wheel ring 114 rotates with the sliding plate 111, and the guide wheel 14 supports the sliding of the wheel ring 114, enabling a relatively high load-bearing effect. By setting the sealing plate 15, the sealing plate 15 is fixed inside the housing 12 and is located on one side of the wheel ring 114 to maintain relative sealing. When water enters the inspection well 50, sewage enters the separation assembly 11, and the sealing plate 15 can block one side of the separation assembly 11, ensuring that sewage can only be discharged through the separation assembly 11.

[0035] Specifically, as Figure 5 and Figure 7 shown: The pressure reducing assembly 13 further includes a fixture 133 fixed on the surface of the arc pipe 131. Two support plates 134 are symmetrically fixed on the surface of the fixture 133, and the support plates 134 are fixedly connected to one side of the housing 12.

[0036] By setting the fixture 133, the fixture 133 can fix the arc pipe 131. At the same time, the support plates 134 on the surface of the fixture 133 are fixed on the housing 12, realizing the installation and fixation of the arc pipe 131 and maintaining a relatively high strength of the arc pipe 131.

[0037] Specifically, as Figure 5 shown: The top end of the arc pipe 131 is inclined, for floating foreign objects to overflow.

[0038] By setting the arc pipe 131 to be inclined, when the internal sewage decreases, the reflux sewage can carry out the dirt in the arc pipe 131. At the same time, the inclined cut at the top end of the arc pipe 131 can better overflow the internal foreign objects.

[0039] Specifically, as Figure 6 shown: The separation net 112 and the sliding plate 111 are both helically arranged, and the aperture of the separation net 112 gradually increases from top to bottom.

[0040] By setting the separation net 112 to be helically arranged, it can filter and separate step by step during the water flow falling. At the same time, the sliding plate 111 being helically arranged can keep a small amount of sewage flowing on its surface as it rotates when the water flow directly passes through, achieving the effect of increasing the sliding speed of heavier foreign objects.

[0041] At the same time, the aperture of the separation net 112 gradually increases, which can keep part of the water flow flowing inside, improve the uniformity of the flow, and maximize the separation of sewage and foreign objects at the bottom.

[0042] Specifically, as Figure 5As shown in the figure: the bottom end of the arc tube 131 and the water inlet pipe 16 are located at the same axial position, and the bottom end of the arc tube 131 is inclined.

[0043] The arc tube 131 and the water inlet pipe 16 are located axially, which can keep the water flowing freely downward with less inertia and not enter the arc tube 131. Moreover, the bottom end of the arc tube 131 is inclined at a small angle, so that after the inertia of the sewage decreases, the foreign matters inside can be discharged under the action of the inclined angle and the water flow, reducing the probability of foreign matters staying in the arc tube 131.

[0044] When the amount of sewage is small, it is difficult for foreign matters to be carried. The water flow passes through the separation net 112 into the water collecting tray 21 and enters the pool body 40 through the water outlet pipe 23. If there are a small amount of foreign matters, they will naturally slide or stay still in the slide plate 111 and the separation net 112. When the water volume increases, the water flow can carry the foreign matters into the separation net 112 and the slideway through the water inlet pipe 16. The water flow passes through the separation net 112, and the water flow falls onto the arc-shaped blade 113 under the action of gravity, pressing the arc-shaped blade 113 to move. The slide plate 111 and the separation net 112 start to rotate with the movement of the blade 113, and the multiple blades 113 are continuously connected to realize the continuous rotation of the separation assembly 11. Among them, the foreign matters blocked by the separation net 112 start to roll along with the rotation of the separation net 112 and the slideway, and quickly fall onto the water draining plate 22 during the rolling and then slide into the inspection well 50, realizing the efficient separation and filtration of sewage.

[0045] When there is a large amount of water, the water body in the drainage channel 30 passes through the water inlet pipe 16 at a high speed. Under the action of inertia, the parabola of the sewage increases, so that part of the sewage directly flows into the arc tube 131. The sewage in the arc tube 131 forms a convection with the newly entered sewage under the action of gravity, so that the sewage still falls at the bottom end of the arc tube 131. At this time, the amount of sewage has not reached the threshold, and the water flow with large inertia is blocked by the arc tube 131, ensuring that the water flow can continuously flow from the left side of the separation assembly 11 and preventing the sewage with large inertia from directly entering the inspection body. When the threshold is reached, at this time, the inertia force of the sewage is large and the amount of sewage is large. Generally speaking, the sewage carries more foreign matters at this time. The sewage rushes into the arc tube 131, and the water level in the arc tube 131 rises to the top of the return pipe 132 under the impact of inertia. Some larger foreign matters have strong floating properties and float on the water surface at the top of the arc tube 131. The foreign matters under the water surface enter the return pipe 132 along with the sewage. When multiple foreign matters float on the top of the arc tube 131 and overflow from the top of the arc tube 131 in turn under the floating action and fall onto the water draining plate 22, a small amount of the overflowed water also flows back on the water draining plate 22 for the first separation of foreign matters; At this time, the sewage and some foreign matters flow back into the separation component 11 through the return pipe 132 along with the sewage. The sewage passes through the separation net 112 and drives the overall rotation of the separation component 11 under the action of the blades 113. The remaining foreign matters roll down inside the separation component 11, realizing the filtration treatment of secondary separation of foreign matters, pre-overflowing and separating the oversized foreign matters, reducing the filtration load of the separation component 11. Driven by a large amount of water, the separation component 11 rotates at a high speed, which can effectively ensure the separation of foreign matters from the sequentially filtered sewage and ensure the passing efficiency of the large-flow sewage.

[0046] And based on a large water flow rate, the accumulation speed of foreign matters in the separation net 112 and the slide plate 111 is relatively fast. The foreign matters are turned over to make them fall naturally. At the same time, the water flow slides on the surface of the spiral slide plate 111, which can speed up the falling of the turned-over foreign matters, so that a small amount of water flow can quickly carry the foreign matters and fall onto the water draining plate 22. The small amount of water flow passes through the water draining plate 22 and enters the water collecting tray 21. In this way, a large number of foreign matters carried in the large-flow sewage can be quickly separated, further improving the passing property of the sewage.

[0047] When the accumulated water accumulates too fast and the drainage efficiency of the drainage channel 30 cannot further drain the sewage, water accumulates and submerges the protection cap 52. The holes on the surface of the protection cap 52 can keep the water flow passing through, or the protection cap 52 can be directly opened when needed. The water flow passes through the protection cap 52 and enters from the inspection well 50, and drains together with the drainage channel 30. The sewage in the inspection well 50 gradually overflows the water draining plate 22, and a large amount of water flow passes through. If the water passing property of the water draining plate 22 is not greater than that when the water enters, the water level of the sewage in the inspection well 50 continues to rise until the water level reaches the separation component 11. At this time, the sewage in the inspection well 50 and the drainage channel 30 is mixed, and the mixed sewage passes through the separation component 11 and drives it to rotate rapidly. The foreign matters are continuously gathered and floated under the rotation of the separation component 11. The water flow passes through the water draining plate 22 and enters the water collecting tray 21. When the water level drops, only the drainage channel 30 discharges water. At this time, under the action of the residual water flow, it can drive the separation component 11 to rotate and introduce the foreign matters into the well body 51 to converge. This method ensures that the submerged water level will not be higher than the protection cap 52, playing an insurance role in restricting the deepest water level; The above method realizes the differential response treatment for different water levels, and the overall sewage treatment will not be blocked. Combined with the multi-stage separation and convergence of foreign matters, it can continuously ensure the best sewage passing property, and is convenient for the later unified cleaning of foreign matters. The whole process does not require power supply, and has strong adaptability and stability for sewage treatment in extreme weather.

[0048] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A sewage collection pool with a filtering function, comprising a water accumulation component (20) connecting a drainage channel (30) and an inspection well (50), and a pool body (40) connected to one side of the water accumulation component (20), wherein a filtering assembly (10) is installed on the water accumulation component (20), characterized in that, The filtration assembly (10) includes: A housing (12); A separation component (11) that rotates axially within the housing (12), including a slide plate (111) and a number of blades (113) fixedly attached to the surface. The inner wall of the slide plate (111) is filled with a separation mesh (112) for filtering sewage. A pressure reduction component (13), one end of which is connected to the inside of the separation component (11) for decelerating and refluxing a large flow of sewage, including an arc tube (131) and a reflux tube (132) connected to the top of the arc tube (131). When the water volume is small, the water flow passes through the separation mesh (112), and a small amount of foreign matter is filtered within the separation component (11). When the water volume is medium, the water flow passes through the separation mesh (112) and pushes the blades (113) to move, driving the slide plate (111) and the separation mesh (112) to rotate simultaneously, and the impurities fall during the rolling. When the water volume is large, the water body in the drainage channel (30) directly flows into the arc tube (131), and after the water level in the arc tube (131) rises under the impact of the water flow for a primary separation of foreign matter, the water body returns through the reflux tube (132) into the separation component (11) for secondary filtration treatment. During flooding, the water flow enters from the drainage channel (30) and the inspection well (50), passes through the filtration assembly (10) and drives it to rotate rapidly to disperse foreign matter.

2. The sewage collection tank with a filtering function according to claim 1, characterized in that, The water accumulation component (20) includes a water accumulation tray (21) fixedly attached to the lower surface of the housing (12). A water draining plate (22) is fixedly attached to the upper surface of the water accumulation tray (21) in an inclined manner. The water draining plate (22) is located at the bottom of the separation component (11). A water outlet pipe (23) connected to the pool body (40) is installed on the inner wall of the water accumulation tray (21).

3. The sewage collection tank with a filtering function according to claim 2, characterized in that The inspection well (50) includes a well body (51) connected to the housing (12). A protective cap (52) is provided at the top of the well body (51). A base (53) is provided at the bottom end of the well body (51), and a transition plate (54) is provided on one side of the base (53).

4. A sewage collection tank with a filtering function according to claim 1, characterized in that, The separation component (11) further includes a wheel ring (114) fixedly attached to one side of the slide plate (111), and a rotating head (115) fixedly attached to the other end of the slide plate (111). The rotating head (115) passes through and rotates within the housing (12). The separation component (11) is provided in a conical shape.

5. A sewage collection pool with a filtering function according to claim 4, characterized in that, The filtration assembly (10) further includes a water inlet pipe (16) rotatably provided on the inner wall of the rotating head (115). A number of guide wheels (14) for supporting the rotation of the wheel ring (114) are fixedly attached to the inner wall of the housing (12). A sealing plate (15) for protecting one side of the wheel ring (114) is fixedly attached to the inner wall of the housing (12).

6. A sewage collection pool with a filtering function according to claim 1, characterized in that, The pressure reduction component (13) further includes a fixture (133) fixedly attached to the surface of the arc tube (131). Two support plates (134) are symmetrically fixedly attached to the surface of the fixture (133). The support plates (134) are fixedly connected to one side of the housing (12).

7. The sewage collection tank with a filtering function according to claim 6, characterized in that, The top end of the arc tube (131) is provided in an inclined shape for the overflow of floating foreign matter.

8. A sewage collection tank with a filtering function according to claim 1, characterized in that, Both the separation mesh (112) and the slide plate (111) are provided in a spiral shape, and the aperture of the separation mesh (112) gradually increases from top to bottom.

9. The sewage collection tank with a filtering function according to claim 1, characterized in that, The bottom end of the arc tube (131) is axially aligned with the water inlet pipe (16), and the bottom end of the arc tube (131) is inclined.

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