A multi-stage filtration wastewater suspended solids removal system

Abstract

The present invention relates to the field of wastewater filtration technology, and in particular to a multi-stage filtration wastewater suspended matter removal system. The system comprises a cylindrical tube, in which a plurality of evenly distributed filtering devices for filtering wastewater suspended matter are arranged, a feeding device is connected to the right end of the cylindrical tube, and a sewage discharge device for removing suspended matter is arranged in the middle of the cylindrical tube. The cylindrical tube used in the present invention cooperates with the filtering device to realize the continuous replacement of the filter screen, and the suspended matter generated by the filtration can be pushed away from the wastewater filtration position, avoiding the phenomenon of blockage caused by the accumulation of suspended matter at the wastewater filtration position, effectively improving the efficiency of wastewater filtration, and can effectively reduce the space occupied by the multi-stage filtration of wastewater.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater filtration, and in particular to a multi-stage filtration wastewater suspended matter removal system. Background Art

[0002] The multi-stage filtration system for suspended solids in wastewater is specially designed to effectively remove suspended solids of different particle sizes in wastewater; the system usually consists of multiple filtration units, each unit is responsible for removing particles within a specific size range, thereby achieving efficient removal of suspended solids in wastewater.

[0003] When filtering domestic water or rainwater and other wastewater, the existing multi-stage filtration wastewater suspended solids removal system usually uses a grid to filter suspended solids for the convenience of cleaning. The wastewater usually flows from the grid with larger aperture to the grid with smaller aperture in sequence, so as to intercept suspended solids of different sizes from large to small. After passing through the grid, the wastewater enters the sedimentation tank for sedimentation to remove sand and mud in the wastewater. However, after the wastewater passes through the grid, the suspended solids usually accumulate at the grid, causing the grid to become blocked, affecting the filtration of the wastewater. In addition, the grid is arranged vertically, and finer suspended solids can pass through the gaps in the grid, resulting in incomplete filtration of the suspended solids. In order to avoid clogging of the grid by suspended solids, it is also necessary to frequently clean the suspended solids in front of the grid, thereby increasing the cost of cleaning the suspended solids. Summary of the invention

[0004] Based on this, it is necessary to provide a multi-stage filtration wastewater suspended solids removal system, which aims to solve the problems caused by filtering and removing suspended solids in existing wastewater.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme to achieve: a multi-stage filtering wastewater suspended solids removal system, including a cylindrical tube, in which a plurality of evenly distributed filtering devices for filtering wastewater suspended solids are arranged, a feeding device is connected to the right end of the cylindrical tube, and a sewage discharge device for removing suspended solids is arranged in the middle of the cylindrical tube.

[0006] The filtering device comprises an annular plate installed on the inner annular surface of the cylindrical tube, the annular plate is provided with a plurality of filtering holes evenly distributed circumferentially, a filtering net is installed in each of the plurality of filtering holes, and a plurality of supporting scrapers evenly distributed circumferentially are installed at the right end of the annular plate.

[0007] The apertures of the plurality of filter screens distributed from right to left gradually decrease.

[0008] The sewage discharge device includes a guide frame that is simultaneously penetrated through the middle of multiple annular plates and has an opening facing upward. A plurality of evenly distributed water drop holes are opened at the left end of the annular wall of the guide frame. The upper end of the guide frame is connected to a plurality of evenly distributed anti-blocking mechanisms that are respectively located on the left sides of the corresponding annular plates. The right end of the guide frame is connected to a pushing mechanism, and the left end of the guide frame is connected to a dropping mechanism.

[0009] The cylindrical tube drives multiple annular plates to rotate intermittently. The annular plates scrape the suspended matter remaining on the filter screen into the guide frame through the supporting scraper. The pushing mechanism is used to push the suspended matter in the guide frame and push the anti-blocking mechanism. The anti-blocking mechanism is used to remove the suspended matter remaining on the filter screen.

[0010] Preferably, the feeding device comprises a circular frame which is sleeved and rotatably connected to the right end of the cylindrical tube, a liquid inlet pipe is installed through the vertical side wall of the circular frame near the lower end, and a first support plate is installed at the lower end of the annular side wall of the circular frame.

[0011] Preferably, the intermittent rotation of the cylindrical tube is realized by a driving device, and the driving device comprises an intermittent driving module installed on the upper end of the circular frame, and a transmission gear is rotatably connected to the intermittent driving module.

[0012] Preferably, the anti-blocking mechanism comprises a support frame installed at the upper end of the guide frame, a pushing branch chain is connected to the left end of the support frame, and a dredging branch chain is connected to the support frame.

[0013] Preferably, the pushing mechanism includes a first hydraulic push rod installed on the right side wall of the guide frame, a spring telescopic rod located in the guide frame is installed at the left end of the first hydraulic push rod, a first circular plate is installed on the fixed section of the spring telescopic rod, and a second circular plate is installed at the end of the movable section of the spring telescopic rod.

[0014] Preferably, the blanking mechanism includes a blanking frame fixedly connected to and communicated with the left end of the guide frame, an inclined guide pipe is integrally formed at the lower end of the blanking frame, a second support plate is installed at the lower end of the guide pipe, a second hydraulic push rod is installed on the left side wall of the blanking frame, and a baffle plate located inside the blanking frame is installed at the right end of the second hydraulic push rod.

[0015] Preferably, the pushing branch chain comprises an articulated frame installed at the left end of the supporting frame, a pushing plate is hinged on the articulated frame, and a torsion spring is provided at the hinge between the pushing plate and the articulated frame.

[0016] Preferably, the dredging branch chain includes a sliding rod that slides through and is connected to the support frame, a connecting plate is installed at the right end of the sliding rod, a connecting spring mounted on the sliding rod is installed between the connecting plate and the support frame, and a plurality of dredging rods are installed at the right end of the connecting plate, and the number of the dredging rods is consistent with the number of mesh holes of the corresponding filter net.

[0017] Preferably, a support ring is sleeved and rotatably connected to the middle of the outer ring surface of the cylindrical tube, and a third support plate is installed at the lower end of the outer ring surface of the support ring.

[0018] Preferably, a gear ring is sleeved on the outer ring surface of the cylindrical tube, and the gear ring is meshed with the transmission gear.

[0019] In summary, the present invention includes the following beneficial technical effects: 1. The cylindrical tube used in the present invention cooperates with the filter device to realize the continuous replacement of the filter screen. The filter screen is a mesh structure, which can improve the effect of suspended matter filtration, and the filter device can push the suspended matter generated by the filtration away from the wastewater filtration position to avoid blockage due to the accumulation of suspended matter at the wastewater filtration position, effectively improve the efficiency of wastewater filtration, and can effectively reduce the space occupied by multi-stage wastewater filtration.

[0020] 2. The filtering device used in the present invention can continuously transport the filtered suspended matter to the sewage discharge device, and the sewage discharge device collects the suspended matter until a large amount of suspended matter accumulates in the sewage discharge device and then discharges it uniformly, effectively reducing the number of times the filtered suspended matter is cleaned and reducing the cost of suspended matter cleaning.

[0021] 3. The sewage discharge device used in the present invention can also clean the filter device during the process of uniformly discharging suspended matter, effectively removing stains and other debris attached to the filter device due to long-term use, further avoiding the clogging of the filter device and ensuring the effect of wastewater filtration.

[0022] 4. The sewage discharge device used in the present invention can squeeze out the wastewater contained in the suspended matter when discharging the suspended matter, ensuring that the water content in the discharged suspended matter is in a less state, thereby avoiding the waste of wastewater after filtration. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0024] Figure 1A three-dimensional structural schematic diagram of the present invention is shown.

[0025] Figure 2 A schematic diagram of the three-dimensional structure of the present invention without the cylindrical tube, the gear ring, the support ring and the third support plate is shown.

[0026] Figure 3 A front view of the present invention is shown.

[0027] Figure 4 A left side view of the present invention is shown.

[0028] Figure 5 Shows Figure 4 Sectional view of AA.

[0029] Figure 6 Shows Figure 5 Magnified view of the middle N region.

[0030] Figure 7 The schematic diagram of the structure of the filtering device and part of the sewage discharge device of the present invention is shown.

[0031] Figure 8 The schematic diagram of the structure of the guide frame, the pushing mechanism and the blanking mechanism of the present invention is shown.

[0032] The above drawings include the following reference numerals: 1, cylindrical tube; 11, gear ring; 12, support ring; 13, third support plate; 2, filter device; 21, annular plate; 22, filter screen; 23, support scraper; 3, feed device; 31, circular frame; 32, liquid inlet pipe; 33, first support plate; 4, sewage discharge device; 41, guide frame; 411, water drop hole; 42, anti-blocking mechanism; 421, support frame; 422, push branch chain; 4221, articulated frame; 4222, push Extrusion plate; 423, dredging branch chain; 4231, sliding rod; 4232, connecting plate; 4233, connecting spring; 4234, dredging rod; 43, pushing mechanism; 431, first hydraulic push rod; 432, spring telescopic rod; 433, first circular plate; 434, second circular plate; 44, blanking mechanism; 441, blanking frame; 442, second hydraulic push rod; 443, baffle plate; 444, second support plate; 5, driving device; 51, intermittent driving module; 52, transmission gear. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0034] See also Figure 1 A multi-stage filtration wastewater suspended solids removal system comprises a cylindrical tube 1, a support ring 12 is sleeved and rotatably connected to the middle of the outer ring surface of the cylindrical tube 1, and a third support plate 13 is installed at the lower end of the outer ring surface of the support ring 12.

[0035] See also Figure 1-Figure 3 The right end of the cylindrical tube 1 is connected to a feeding device 3, and the feeding device 3 includes a circular frame 31 which is sleeved and rotatably connected to the right end of the cylindrical tube 1, and a first supporting plate 33 is installed at the lower end of the annular side wall of the circular frame 31.

[0036] During specific work, in the initial state, the cylindrical tube 1 is lifted by the existing lifting equipment crane, and the cylindrical tube 1 is lifted to the working position, and then the third support plate 13 and the first support plate 33 are fixed at the working position, and the third support plate 13 supports and limits the cylindrical tube 1 through the support ring 12, and at the same time, the first support plate 33 also supports and limits the cylindrical tube 1 through the circular frame 31, thereby fixing the cylindrical tube 1 at the working position.

[0037] See also Figure 1 , Figure 2 and Figure 5 The intermittent rotation of the cylindrical tube 1 is realized by a driving device 5, and the driving device 5 includes an intermittent driving module 51 installed on the upper end of the circular frame 31, and a transmission gear 52 is rotatably connected to the intermittent driving module 51.

[0038] See also Figure 1 and Figure 5 A gear ring 11 is sleeved on the outer ring surface of the cylindrical tube 1 , and the gear ring 11 is meshed with the transmission gear 52 .

[0039] During specific operation, the intermittent drive module 51 is an existing intermittent drive device groove wheel mechanism. Before filtering, the intermittent drive module 51 is connected to the existing power supply. During filtering, the intermittent drive module 51 is started, and the intermittent drive module 51 drives the transmission gear 52 to rotate intermittently. The transmission gear 52 drives the gear ring 11 to rotate intermittently. The gear ring 11 drives the cylindrical tube 1 to rotate intermittently on the support ring 12 and the circular frame 31.

[0040] See also Figure 1 and Figure 5 A liquid inlet pipe 32 is installed through the vertical side wall of the circular frame 31 near the lower end.

[0041] See also Figure 1 , Figure 2 , Figure 4 and Figure 7The cylindrical tube 1 is provided with a plurality of evenly distributed filtering devices 2 for filtering suspended matter in wastewater. The filtering device 2 comprises an annular plate 21 mounted on the inner annular surface of the cylindrical tube 1. The annular plate 21 is provided with a plurality of circumferentially evenly distributed filtering through holes. A filter screen 22 is installed in each of the plurality of filtering through holes. The apertures of the plurality of filter screens 22 distributed from right to left gradually decrease. A plurality of circumferentially evenly distributed supporting scrapers 23 are installed at the right end of the annular plate 21.

[0042] During specific operation, the existing wastewater pipe is installed at the end of the liquid inlet pipe 32, and the wastewater flows into the liquid inlet pipe 32 through the wastewater pipe, and then flows into the cylindrical tube 1 through the liquid inlet pipe 32. The wastewater in the cylindrical tube 1 is in the lower half of the cylindrical tube 1, and the wastewater in the cylindrical tube 1 flows from the filter screen 22 with a larger aperture to the filter screen 22 with a smaller aperture. The filtered wastewater is then discharged from the other end of the cylindrical tube 1. Multiple filter screens 22 with different apertures perform multi-stage filtration on the suspended matter in the wastewater, and the filter screen 22 blocks the suspended matter between the corresponding two supporting scrapers 23. The intermittently rotating cylindrical tube 1 drives the filter screen 22 to rotate intermittently through the annular plate 21, so that the unused filter screen 22 is moved to the place where the wastewater flows and performs filtering work. At the same time, the annular plate 21 drives the supporting scraper 23 to rotate, and the supporting scraper 23 scrapes the filtered suspended matter upward to avoid the accumulated suspended matter from clogging the filter screen 22, thereby ensuring the effect of wastewater filtration.

[0043] See also Figure 1 and Figure 2 A sewage discharge device 4 for discharging suspended matter is provided in the middle of the cylindrical tube 1, and the sewage discharge device 4 includes a guide frame 41 which is simultaneously penetrated through the middle of the plurality of annular plates 21 and has an opening facing upward, and the upper end of the guide frame 41 is connected to a plurality of anti-blocking mechanisms 42 which are evenly distributed and respectively located on the left side of the corresponding annular plates 21, the right end of the guide frame 41 is connected to a pushing mechanism 43, and the left end of the guide frame 41 is connected to a blanking mechanism 44.

[0044] See also Figure 1 and Figure 2 The cylindrical tube 1 drives multiple annular plates 21 to rotate intermittently. The annular plates 21 scrape the suspended matter remaining in the filter screen 22 into the guide frame 41 through the supporting scraper 23. The pushing mechanism 43 is used to push the suspended matter in the guide frame 41 and push the anti-blocking mechanism 42. The anti-blocking mechanism 42 is used to remove the suspended matter remaining on the filter screen 22.

[0045] During specific operation, the annular plate 21 scrapes the suspended matter upwards through the supporting scraper 23 located below the guide frame 41. The end of the supporting scraper 23 located below fits with the outer ring surface of the guide frame 41, which can effectively prevent the suspended matter from falling back into the wastewater during the scraping process of the suspended matter. After the supporting scraper 23 that scrapes the suspended matter moves to the opening position of the guide frame 41, the suspended matter falls into the guide frame 41 by its own gravity, avoiding affecting the filter net 22 during the subsequent filtering work.

[0046] See also Figure 2 , Figure 5 and Figure 8 The pushing mechanism 43 includes a first hydraulic push rod 431 installed on the right side wall of the guide frame 41, a spring telescopic rod 432 located in the guide frame 41 is installed at the left end of the first hydraulic push rod 431, a first circular plate 433 is installed on the fixed section of the spring telescopic rod 432, and a second circular plate 434 is installed at the end of the moving section of the spring telescopic rod 432.

[0047] During specific operation, the first hydraulic push rod 431 is connected to the existing hydraulic pump before filtering. After the filter screen 22 filters the wastewater for a period of time and the filter screen 22 rotates intermittently, the first hydraulic push rod 431 is started. The first hydraulic push rod 431 drives the second circular plate 434 and the first circular plate 433 to move toward the suspended matter through the spring telescopic rod 432. The second circular plate 434 first contacts the suspended matter and pushes it.

[0048] See also Figure 1 , Figure 2 and Figure 7 The anti-blocking mechanism 42 includes a support frame 421 installed on the upper end of the guide frame 41, a pushing branch chain 422 is connected to the left end of the support frame 421, and a dredging branch chain 423 is connected to the support frame 421.

[0049] See also Figure 2 , Figure 6 and Figure 7 The pushing branch chain 422 includes an articulated frame 4221 installed at the left end of the support frame 421, a pushing plate 4222 is hinged on the articulated frame 4221, and a torsion spring is provided at the hinge between the pushing plate 4222 and the articulated frame 4221.

[0050] See also Figure 2 , Figure 6 and Figure 7The dredging branch chain 423 includes a sliding rod 4231 that slides through and is connected to the support frame 421, a connecting plate 4232 is installed at the right end of the sliding rod 4231, a connecting spring 4233 that is sleeved on the sliding rod 4231 is installed between the connecting plate 4232 and the support frame 421, and a plurality of dredging rods 4234 are installed at the right end of the connecting plate 4232, and the number of the dredging rods 4234 is consistent with the number of meshes of the corresponding filter screen 22.

[0051] In specific operation, the elastic strength of the spring telescopic rod 432 is greater than the elastic strength of the torsion spring between the pushing plate 4222 and the hinge frame 4221 and the elastic strength of the connecting spring 4233. In the process that the second circular plate 434 pushes the suspended matter, the second circular plate 434 pushes the plurality of pushing plates 4222 in sequence. The pushing plate 4222 is forced to rotate along the hinge frame 4221 and exerts pressure on the torsion spring. At the same time, the pushing plate 4222 pushes the sliding rod 4231. The sliding rod 4231 is forced to drive the connecting plate 4232 to move toward the corresponding filter screen 22 and connect the filter screen 22. The spring 4233 is stretched, and the connecting plate 4232 drives the multiple dredging rods 4234 to insert into the mesh of the filter screen 22 and remove the suspended matter attached to the mesh to avoid clogging of the filter screen 22. At the same time, the suspended matter dredged by the dredging rods 4234 falls between the first circular plate 433 and the second circular plate 434, and the moving first circular plate 433 pushes the suspended matter cleaned on the filter screen 22. When the second circular plate 434 is separated from the pushing plate 4222, the torsion spring drives the pushing plate 4222 to reset, and the stretched connecting spring 4233 drives the connecting plate 4232 to reset.

[0052] See also Figure 1 , Figure 2 , Figure 5 and Figure 8 The blanking mechanism 44 includes a blanking frame 441 fixedly connected and communicated with the left end of the guide frame 41, an inclined guide pipe is integrally formed at the lower end of the blanking frame 441, a second support plate 444 is installed at the lower end of the guide pipe, a second hydraulic push rod 442 is installed on the left side wall of the blanking frame 441, and a baffle plate 443 located in the blanking frame 441 is installed at the right end of the second hydraulic push rod 442; a plurality of evenly distributed water drop holes 411 are opened at the left end of the guide frame 41.

[0053] During specific operation, the second hydraulic push rod 442 is connected to the existing hydraulic pump before filtering. In the initial state, the second hydraulic push rod 442 drives the baffle plate 443 to be located at the left end of the guide frame 41. During filtering, the second circular plate 434 pushes the multiple pushing plates 4222 and continues to drive the suspended matter to move in the direction of the baffle plate 443. The baffle plate 443 blocks the suspended matter. When the suspended matter contacts the baffle plate 443, the first hydraulic push rod 431 continues to drive the second circular plate 434 to squeeze the suspended matter through the spring telescopic rod 432. During the squeezing process, the spring telescopic rod 432 is forced to shrink, and the first circular plate 433 and the second circular plate 434 approach and squeeze the suspended matter between the two, until the suspended matter between the first circular plate 433 and the second circular plate 434 and the second circular plate 434 and the baffle plate 443 are squeezed, and the extruded The wastewater falls into the cylindrical pipe 1 through multiple water holes 411 and is discharged. When the suspended matter is squeezed, the second hydraulic push rod 442 drives the baffle plate 443 to move into the blanking frame 441. The first hydraulic push rod 431 continues to drive the second circular plate 434 and the first circular plate 433 to move to the top of the guide pipe at the lower end of the blanking frame 441 through the spring telescopic rod 432. The spring telescopic rod 432 resets and drives the second circular plate 434 to reset. The second circular plate 434 and the first circular plate 433 drive the squeezed suspended matter to move to the top of the guide pipe. The squeezed suspended matter is discharged through the guide pipe and collected centrally. Subsequently, the first hydraulic push rod 431 drives the second circular plate 434 and the first circular plate 433 to reset through the spring telescopic rod 432, and the second hydraulic push rod 442 drives the baffle plate 443 to reset. The process of removing suspended matter is carried out without rotating the cylindrical pipe 1.

[0054] After the suspended matter is removed once, the cylindrical tube 1 drives the next filter screen 22 to move to the anti-blocking mechanism 42 through the annular plate 21, and then repeats the previous filter screen 22 cleaning steps to clean the filter screen 22 to prevent blocking. After all the filter screens 22 are cleaned, the suspended matter removal step is stopped. As the wastewater continues to be filtered, more suspended matter accumulates in the guide frame 41 again, and the suspended matter removal and filter screen 22 cleaning steps are repeated until all the wastewater is filtered and the work is completed.

[0055] In the description of the embodiments of the present invention, it should be noted that the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "top", "bottom", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the embodiments of the present invention and simplifying the description, and does 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 the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0056] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-stage filtration wastewater suspended solids removal system, characterized by: It comprises an intermittently rotating cylindrical tube (1), wherein a plurality of evenly distributed filtering devices (2) for filtering suspended matter in wastewater are arranged inside the cylindrical tube (1), a feeding device (3) is connected to the right end of the cylindrical tube (1), and a sewage discharge device (4) for removing suspended matter is arranged in the middle of the cylindrical tube (1); The filtering device (2) comprises an annular plate (21) mounted on the inner annular surface of the cylindrical tube (1), the annular plate (21) being provided with a plurality of filtering through holes evenly distributed in the circumferential direction, a filtering screen (22) being installed in each of the plurality of filtering through holes, and a plurality of supporting scrapers (23) evenly distributed in the circumferential direction being installed at the right end of the annular plate (21); The apertures of the plurality of filter screens (22) distributed from right to left gradually decrease; The sewage discharge device (4) comprises a guide frame (41) which is simultaneously arranged in the middle of a plurality of annular plates (21) and has an opening facing upwards, a plurality of evenly distributed water drop holes (411) are opened at the left end of the annular wall of the guide frame (41), a plurality of evenly distributed anti-blocking mechanisms (42) which are respectively located on the left side of the corresponding annular plates (21) are connected to the upper end of the guide frame (41), a pushing mechanism (43) is connected to the right end of the guide frame (41), and a material dropping mechanism (44) is connected to the left end of the guide frame (41); The anti-blocking mechanism (42) comprises a support frame (421) installed on the upper end of the guide frame (41), the left end of the support frame (421) is connected to a pushing branch chain (422), and the support frame (421) is connected to a dredging branch chain (423); The cylindrical tube (1) drives a plurality of annular plates (21) to rotate intermittently. The annular plates (21) scrape the suspended matter remaining on the filter screen (22) into the guide frame (41) through the supporting scraper (23). The pushing mechanism (43) is used to push the suspended matter in the guide frame (41) and push the anti-blocking mechanism (42). The anti-blocking mechanism (42) is used to remove the suspended matter remaining on the filter screen (22).

2. A multi-stage filtration wastewater suspended solids removal system according to claim 1, characterized in that: The feeding device (3) comprises a circular frame (31) which is sleeved and rotatably connected to the right end of the cylindrical tube (1); a liquid inlet pipe (32) is installed through the vertical side wall of the circular frame (31) near the lower end; and a first support plate (33) is installed at the lower end of the annular side wall of the circular frame (31).

3. A multi-stage filtration wastewater suspended solids removal system according to claim 2, characterized in that: The intermittent rotation of the cylindrical tube (1) is achieved by a driving device (5), wherein the driving device (5) comprises an intermittent driving module (51) mounted on the upper end of the circular frame (31), and a transmission gear (52) is rotatably connected to the intermittent driving module (51).

4. A multi-stage filtration wastewater suspended solids removal system according to claim 1, characterized in that: The pushing mechanism (43) comprises a first hydraulic push rod (431) mounted on the right side wall of the guide frame (41); a spring telescopic rod (432) located in the guide frame (41) is mounted on the left end of the first hydraulic push rod (431); a first circular plate (433) is mounted on the fixed section of the spring telescopic rod (432); and a second circular plate (434) is mounted on the end of the movable section of the spring telescopic rod (432).

5. The multi-stage filtration wastewater suspended solids removal system according to claim 1, characterized in that: The blanking mechanism (44) comprises a blanking frame (441) fixedly connected to and in communication with the left end of the guide frame (41); an inclined material guide pipe is integrally formed at the lower end of the blanking frame (441); a second support plate (444) is installed at the lower end of the material guide pipe; a second hydraulic push rod (442) is installed on the left side wall of the blanking frame (441); and a baffle plate (443) located in the blanking frame (441) is installed at the right end of the second hydraulic push rod (442).

6. The multi-stage filtration wastewater suspended solids removal system according to claim 1, characterized in that: The pushing branch chain (422) comprises an articulated frame (4221) installed at the left end of the supporting frame (421), a pushing plate (4222) is articulated on the articulated frame (4221), and a torsion spring is arranged at the articulation point between the pushing plate (4222) and the articulated frame (4221).

7. The multi-stage filtration wastewater suspended solids removal system according to claim 1, characterized in that: The dredging branch chain (423) comprises a sliding rod (4231) that slides through and is connected to the support frame (421); a connecting plate (4232) is installed at the right end of the sliding rod (4231); a connecting spring (4233) that is sleeved on the sliding rod (4231) is installed between the connecting plate (4232) and the support frame (421); a plurality of dredging rods (4234) are installed at the right end of the connecting plate (4232); and the number of the dredging rods (4234) is consistent with the number of meshes of the corresponding filter screen (22).

8. The multi-stage filtration wastewater suspended solids removal system according to claim 1, characterized in that: A support ring (12) is sleeved and rotatably connected to the middle of the outer ring surface of the cylindrical tube (1), and a third support plate (13) is installed at the lower end of the outer ring surface of the support ring (12).

9. The multi-stage filtration wastewater suspended solids removal system according to claim 3, characterized in that: A gear ring (11) is sleeved and installed on the outer ring surface of the cylindrical tube (1), and the gear ring (11) is meshed with the transmission gear (52).

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