Filtering device for wastewater treatment

Abstract

The utility model relates to the field of sewage treatment, in particular to a filtering device for wastewater treatment. Wherein the two ends of the sleeve are sealed by sealing plates, and the two ends of the filter cartridge are respectively sealed by the sealing plates; the first partition plate and the second partition plate are arranged in the filter cartridge and are respectively arranged at two end parts of the filter cartridge; the first partition plate and the second partition plate are in sliding fit with the filter cartridge; the conveying pipe penetrates through the first partition plate and extends into the filter cartridge; the casing pipe sleeves the conveying pipe and is matched with the first partition plate, the casing pipe and the first partition plate are sealed, and one end of the casing pipe extends to the side, close to the second partition plate, of the first partition plate. According to the self-cleaning sewage treatment device, self-cleaning can be achieved, manual intervention is not needed, the cleaning time is short, and interference on the normal sewage treatment progress can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the field of sewage treatment, in particular to a filtering device for wastewater treatment. Background Art

[0002] During the sewage treatment process, filters require regular cleaning of the filter screens and filter plates to ensure stable filtration. Currently, cleaning these filters requires shutting down the filter system before cleaning or replacing them. This not only delays normal sewage treatment progress but also places an additional burden on workers.

[0003] In view of this, this application is hereby filed. Utility Model Content

[0004] The purpose of the utility model is to provide a filtering device for wastewater treatment, which can achieve self-cleaning without manual intervention, and the time required for cleaning is relatively short, which can effectively reduce interference with the normal progress of sewage treatment.

[0005] The embodiment of the present utility model is achieved as follows:

[0006] A filtering device for wastewater treatment comprises a sleeve, a filter cartridge, a delivery pipe, a first partition plate, a second partition plate and a sleeve.

[0007] Both ends of the sleeve are closed by sealing plates. The filter cartridge is arranged along the axial direction of the sleeve. Both ends of the filter cartridge respectively penetrate the sealing plates at both ends of the sleeve. The sealing plates and the filter cartridge are sealed.

[0008] The filter cartridge is provided with filter holes which are distributed inside the sleeve.

[0009] The delivery pipe is arranged along the axial direction of the filter cartridge, and the output end of the delivery pipe extends into the filter cartridge. The end of the delivery pipe close to the filter cartridge is closed by an end block, and the side wall of the delivery pipe is provided with an output port, which is located inside the filter cartridge.

[0010] The first and second baffles are both located within the filter cartridge and at both ends. Along the axial direction of the filter cartridge, the first and second baffles slide in contact with the filter cartridge and form a sliding seal with the cartridge. A delivery tube extends through the first baffle, and a sleeve is sleeved within the delivery tube. The sleeve and the first baffle are sealed together, with one end of the sleeve extending to the side of the first baffle proximal to the second baffle. Along the axial direction of the delivery tube, the sleeve slides in contact with the delivery tube and forms a sliding seal with the delivery tube.

[0011] The first partition has a first movement stop point, a second movement stop point and a third movement stop point. The second partition has a first follower movement stop point and a second follower movement stop point.

[0012] When the first partition is located at the first movement stop point, the second partition is located at the first follow-up stop point, the first partition and the second partition are respectively arranged at the two end portions of the filter cartridge, the sleeve is located on the side of the output port away from the second partition, and the output port is in an open state.

[0013] When the first partition is located at the second movement dead point, the second partition is located at the first follow-up dead point, the sleeve fits the second partition, and the end of the sleeve close to the second partition closes the output port.

[0014] When the first partition is located at the third movement stop point, the first partition moves to the position corresponding to the second partition at the first follow-up stop point, and the second partition is pushed to the second follow-up stop point by the sleeve, and the end of the sleeve away from the second partition closes the output port.

[0015] Furthermore, when the second partition is located at the first follower stop point, the second partition is in contact with the end block.

[0016] Furthermore, the sleeve and the filter cartridge are both cylindrical.

[0017] The first separator is fitted with a mating ring that fits against the inner wall of the filter cartridge. Axially, the mating ring slides and seals against the filter cartridge, while the first separator is fixedly attached to the sleeve. Circumferentially, the mating ring secures the cartridge, while the first separator rotates and seals against the sleeve, which is then fixedly attached to the delivery tube.

[0018] A cleaning rod is fixedly connected to one side of the first partition close to the second partition. The cleaning rod fits the outer wall of the sleeve and extends axially along the sleeve. The end face of the cleaning rod and the end face of the sleeve close to the second partition are located in the same plane.

[0019] Furthermore, along the circumference of the filter cartridge, the second partition is fixedly matched with the filter cartridge.

[0020] Furthermore, the sleeve, the filter cartridge and the delivery pipe are coaxially arranged.

[0021] Furthermore, the central axes of the sleeve, the filter cartridge and the delivery pipe are all arranged horizontally, and the side wall of the sleeve is connected to a liquid outlet pipe, which is located at the bottom of the sleeve.

[0022] Furthermore, the output port extends along the axial direction of the delivery pipe and extends to the edge of the end block.

[0023] The beneficial effects of the technical solution of the embodiment of the utility model include:

[0024] The filter device for wastewater treatment provided by the embodiment of the present utility model can achieve self-cleaning without manual intervention, and the time required for cleaning is short, which can effectively reduce interference with the normal progress of sewage treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 A schematic diagram of the overall structure of the filter device provided in an embodiment of the present utility model (the first partition is located at the first movement stop point);

[0027] Figure 2 Schematic diagram of the first partition;

[0028] Figure 3 Schematic diagram of the overall structure of the filtering device provided by an embodiment of the present utility model (the first partition is located at the second movement stop point);

[0029] Figure 4 A schematic diagram of the overall structure of the filter device provided in an embodiment of the present utility model (the first partition is located at the third movement stop point);

[0030] Figure 5 Schematic diagram of a filter device with baffles installed.

[0031] Description of reference numerals:

[0032] Sleeve 100; sealing plate 110; filter cartridge 200; baffle 210; delivery pipe 300; end block 310; output port 320; first partition plate 400; matching ring 410; cleaning rod 420; second partition plate 500; sleeve 600. DETAILED DESCRIPTION

[0033] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0036] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0037] Furthermore, the terms "parallel" and "perpendicular" do not necessarily mean that the components must be absolutely parallel or perpendicular, but rather that they can be slightly tilted. For example, "parallel" simply means that the direction is more parallel than "perpendicular," not that the structure must be completely parallel, but rather that it can be slightly tilted.

[0038] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0039] In order to overcome the shortcomings of the existing technology, please refer to Figure 1-Figure 4 This embodiment provides a filtering device for wastewater treatment, which includes: a frame (not shown in the figure), a sleeve 100, a filter cartridge 200, a delivery pipe 300, a first partition 400, a second partition 500 and a sleeve 600.

[0040] The frame is fixedly installed on the ground to support other components.

[0041] In this embodiment, the sleeve 100 and the filter cartridge 200 are both cylindrical, and the sleeve 100 is fixedly mounted on the frame. Both ends of the sleeve 100 are sealed by sealing plates 110.

[0042] The inner diameter of the sleeve 100 is larger than the outer diameter of the filter cartridge 200. The filter cartridge 200 is arranged along the axial direction of the sleeve 100. The two ends of the filter cartridge 200 respectively penetrate the sealing plates 110 at both ends of the sleeve 100. The sealing plates 110 and the filter cartridge 200 are fixedly connected and sealed.

[0043] The filter cartridge 200 is provided with filter holes (not shown). The filter holes are arranged in an array along the sidewall of the filter cartridge 200 and are located within the portion of the filter cartridge 200 located within the sleeve 100. In other words, all the filter holes of the filter cartridge 200 are located between the two sealing plates 110 of the sleeve 100. The pore diameter of the filter holes can be flexibly adjusted according to actual needs and is not specifically limited in this application. Optionally, the pore diameter can be 2 mm, but is not limited thereto.

[0044] The delivery pipe 300 is arranged along the axial direction of the filter cartridge 200 . The delivery pipe 300 is used to deliver the sewage to be filtered into the filter cartridge 200 . The output end of the delivery pipe 300 extends into the filter cartridge 200 .

[0045] One end of the delivery pipe 300 close to the filter cartridge 200 is closed by an end block 310 . The side wall of the delivery pipe 300 is provided with an output port 320 for delivering sewage into the filter cartridge 200 . The output port 320 is located inside the filter cartridge 200 .

[0046] The sleeve 100, filter cartridge 200, and delivery pipe 300 are coaxially arranged, with their central axes all oriented horizontally. A liquid outlet pipe (not shown) is connected to the sidewall of the sleeve 100. Sewage entering the filter cartridge 200 is filtered by the filter cartridge 200 and then enters the sleeve 100. The filtered sewage in the sleeve 100 is then discharged from the sleeve 100 through the liquid outlet pipe. The liquid outlet pipe is located at the bottom of the sleeve 100 to facilitate the full drainage of the sewage in the sleeve 100.

[0047] The first and second partitions 400 and 500 are both circular plates. They are located within the filter cartridge 200 and at both ends of the filter cartridge 200. The edges of the first and second partitions 400 and 500 are in contact with the inner wall of the filter cartridge 200. Along the axial direction of the filter cartridge 200, the first and second partitions 400 and 500 are slidably fitted to the filter cartridge 200, and both are slidably sealed against the filter cartridge 200. In this embodiment, the thickness of the first partition 400 is greater than the diameter of the filter pores of the filter cartridge 200.

[0048] The delivery pipe 300 extends into the filter cartridge 200 by penetrating the first partition plate 400 , and the output port 320 of the delivery pipe 300 is located between the first partition plate 400 and the second partition plate 500 .

[0049] The sleeve 600 is sleeved on the conveying pipe 300, and the sleeve 600 cooperates with the first partition 400 and is sealed therebetween. One end of the sleeve 600 extends to the side of the first partition 400 close to the second partition 500, and the other end of the sleeve 600 is located on the side of the first partition 400 away from the second partition 500.

[0050] The inner wall of the sleeve 600 is in contact with the outer wall of the delivery tube 300 . Along the axial direction of the delivery tube 300 , the sleeve 600 is slidably fitted with the delivery tube 300 and is slidably sealed with the delivery tube 300 .

[0051] The first partition plate 400 is further sleeved with a matching ring 410 . The matching ring 410 is annular. The inner ring wall of the matching ring 410 fits with the edge of the first partition plate 400 , and the outer ring wall of the matching ring 410 fits with the inner wall of the filter cartridge 200 .

[0052] Along the axial direction of the filter cartridge 200 , the matching ring 410 is slidably fitted with the filter cartridge 200 and is slidingly sealed with the filter cartridge 200 . The first partition plate 400 is fixedly fitted with the matching ring 410 , and the first partition plate 400 is fixedly fitted with the sleeve 600 .

[0053] Along the circumference of the filter cartridge 200, the mating ring 410 is fixedly mated with the filter cartridge 200, the first partition plate 400 is rotationally mated with the mating ring 410 and rotationally sealed, the first partition plate 400 is rotationally mated with the sleeve 600 and rotationally sealed with the sleeve 600, and the sleeve 600 is fixedly mated with the delivery pipe 300.

[0054] A cleaning rod 420 is fixedly connected to one side of the first partition 400 close to the second partition 500. The cleaning rod 420 is in contact with the outer wall of the sleeve 600. The cleaning rod 420 extends along the axial direction of the sleeve 600. The end face of the cleaning rod 420 and the end face of the sleeve 600 close to the second partition 500 are located in the same plane, that is, the cleaning rod 420 extends to the end face of the sleeve 600 close to the second partition 500.

[0055] The second partition plate 500 is fixedly fitted to the filter cartridge 200 along the circumference of the filter cartridge 200 . The output port 320 extends along the axial direction of the delivery pipe 300 and extends to the edge of the end block 310 .

[0056] In this embodiment, a first actuator (not shown) is configured to rotate the first partition plate 400. A second actuator (not shown) is configured to rotate the second partition plate 500. A third actuator (not shown) is configured to rotate the second partition plate 500.

[0057] The first partition plate 400 has a first movement stop point, a second movement stop point, and a third movement stop point, and the second partition plate 500 has a first follower movement stop point and a second follower movement stop point.

[0058] When the first partition plate 400 is located at the first movement stop point, the second partition plate 500 is correspondingly located at the first follow-up stop point. Figure 1As shown, at this time, the first partition 400 and the second partition 500 are respectively arranged at the ends of the filter cartridge 200. The surface of the first partition 400 on the side away from the second partition 500 is coplanar with the outer surface of the sealing plate 110 of the filter cartridge 200. The surface of the second partition 500 on the side away from the first partition 400 is coplanar with the outer surface of the sealing plate 110 at the other end of the filter cartridge 200. The sleeve 600 is located on the side of the output port 320 away from the second partition 500, and the output port 320 is in an open state. In this state, the delivery pipe 300 can smoothly deliver the sewage to be filtered to the filter cartridge 200. Since the first partition 400 and the second partition 500 have sealed both ends of the filter cartridge 200, the sewage in the filter cartridge 200 can only enter the sleeve 100 through the filter holes on the side wall of the filter cartridge 200, thereby fully filtering the sewage. The sewage entering the sleeve 100 is filtered sewage, which is discharged from the liquid outlet pipe at the bottom of the sleeve 100, thereby transporting the filtered sewage to subsequent treatment processes.

[0059] When the second partition plate 500 is located at the first follow-up stop point, the second partition plate 500 is in contact with the end block 310 .

[0060] After the filter device has been operating for a period of time, it can begin a self-cleaning process. At this point, the third actuator drives the sleeve 600 toward the side where the second baffle 500 is located. The sleeve 600 moves axially along the delivery tube 300, while the first baffle 400 and mating ring 410 move along the axial direction of the filter cartridge 200. During this process, the sleeve 600 moves to the outlet 320, blocking it. The first baffle 400 also pushes impurities filtered from the filter cartridge 200 toward the side where the second baffle 500 is located.

[0061] It should be noted that, since the liquid outlet pipe is provided at the bottom of the sleeve 100, the filtered sewage in the sleeve 100 can be fully discharged, thereby preventing the sewage from remaining in the sleeve 100. In this way, by controlling the efficiency of the liquid outlet pipe in discharging the sewage, no liquid can be accumulated in the sleeve 100. In this way, during the movement of the first partition 400 toward the second partition 500, no sewage will leak from the side of the first partition 400 away from the second partition 500.

[0062] On the other hand, optional, see Figure 5A baffle 210 may also be provided at the end of the filter cartridge 200 away from the second partition 500. The baffle 210 is located on the side of the first partition 400 away from the second partition 500. The baffle 210 covers the end surface of the filter cartridge 200 away from the second partition 500, thereby sealing the end of the filter cartridge 200 away from the second partition 500. Correspondingly, the sleeve 600 passes through the baffle 210. Along the axial direction of the filter cartridge 200, the sleeve 600 slides with the baffle 210 and slides and seals with the baffle 210. During the movement of the first partition 400 toward the second partition 500, the baffle 210 can also prevent sewage from leaking from the side of the first partition 400 away from the second partition 500. The present invention is not limited thereto.

[0063] As the sleeve 600 continues to move along the axial direction of the delivery pipe 300, the sleeve 600 will block the outlet 320 more and more, and the flow area of ​​the outlet 320 will gradually decrease. When the sleeve 600 moves to the end block 310, the outlet 320 is completely closed by the sleeve 600, and the sewage in the delivery pipe 300 will no longer enter the filter cartridge 200. When the end face of the sleeve 600 fits with the second partition 500, the distance between the first partition 400 and the second partition 500 reaches the minimum. At this time, the first partition 400 reaches the second movement stop point, as shown in FIG. Figure 3 shown.

[0064] When the first baffle 400 is at the second movement stop point, the second baffle 500 remains at the first follower stop point, the sleeve 600 is in contact with the second baffle 500, and the end of the sleeve 600 adjacent to the second baffle 500 closes the outlet 320. In this state, the first baffle 400 and the second baffle 500 squeeze the impurities filtered by the filter plate, allowing the sewage contained in the impurities to be squeezed into the sleeve 100, reducing the water content of the impurities.

[0065] Subsequently, the third driver can be used to continue driving the sleeve 600 to move axially along the delivery pipe 300, and the second driver can be used to synchronously drive the second partition 500 to move along the axial direction of the delivery pipe 300 along with the sleeve 600, so that the first partition 400 and the second partition 500 cooperate to push the impurities in the filter cartridge 200 out of the end of the filter cartridge 200. Since the output port 320 has been closed by the sleeve 600 and the sewage in the sleeve 100 has been fully discharged by the liquid outlet pipe, there will not be too much sewage flowing out from the area between the first partition 400 and the second partition 500. After the first partition 400 moves to the position corresponding to the second partition 500 at the first follow-up stop point, the first partition 400 reaches the third movement stop point, as shown in FIG. Figure 4 shown.

[0066] When the first partition 400 is at the third end point of movement, the first partition 400 moves to the position corresponding to the second partition 500 at the first end point of follow-up movement, and the second partition 500 moves to the second end point of follow-up movement. In this state, the end of the sleeve 600 away from the second partition 500 still seals the outlet 320. It should be noted that if the baffle 210 is provided, the end of the sleeve 600 away from the second partition 500 will also engage with the baffle 210.

[0067] After the first partition 400 reaches the third dead point, the third and second actuators cease driving, and impurities between the first partition 400 and the second partition 500 fall under the action of gravity. The fallen impurities can be collected by a collection device for unified processing. At this time, the first actuator can also be used to drive the first partition 400 to rotate, so that the cleaning rod 420 can clean any remaining impurities that may be hanging on the surface of the sleeve 600, ensuring that the impurities are fully removed.

[0068] After the impurities between the first and second separators 400 and 500 have fallen, the first and second separators 400 and 500 can be simultaneously reset, with the first separator 400 returning to the second end point and the second separator 500 returning to the first follower end point. Subsequently, the first separator 400 is reset again, returning to the first end point. At this point, the filtration operation can continue.

[0069] It is understood that in other embodiments of the present invention, the first partition plate 400 may be fixedly connected to the sleeve 600. In this case, the sleeve 600 is configured to not only slide along the axial direction of the delivery tube 300 but also rotate along the circumferential direction of the delivery tube 300. Accordingly, the first driver can be directly used to drive the sleeve 600 to rotate.

[0070] The beneficial effects of the filter device for wastewater treatment provided by the embodiment of the utility model include but are not limited to:

[0071] (1) The filter cartridge 200 is self-cleaned and the entire cleaning process does not require manual intervention, which greatly improves the cleaning efficiency. The time required for cleaning is shorter, and there is no need for long-term downtime, which has less interference with normal sewage filtration work.

[0072] (2) When the filter cartridge 200 is self-cleaned, the impurities removed from the filter cartridge 200 can be dehydrated simultaneously, so that the water content of the impurities removed is significantly reduced, thereby reducing the burden of subsequent treatment of the impurities.

[0073] (3) When the filter cartridge 200 is self-cleaned, the impurities removed can be automatically discharged, and the impurities will not accumulate in the filter cartridge 200.

[0074] (4) Compared with the cleaning method using a cleaning brush in the prior art, the cleaning efficiency is higher and there will be no problem of impurities entangled in the cleaning brush.

[0075] In summary, the filtering device for wastewater treatment provided by the embodiment of the present invention can achieve self-cleaning without manual intervention, and the time required for cleaning is short, which can effectively reduce interference with the normal progress of sewage treatment.

[0076] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A filtering device for wastewater treatment, characterized in that: include: a sleeve, a filter cartridge, a delivery pipe, a first partition plate, a second partition plate, and a sleeve; Both ends of the sleeve are closed by sealing plates, the filter cartridge is arranged along the axial direction of the sleeve, and both ends of the filter cartridge respectively pass through the sealing plates at both ends of the sleeve, and the sealing plates and the filter cartridge are sealed; The filter cartridge is provided with filter holes, and the filter holes are distributed inside the sleeve; The delivery pipe is arranged along the axial direction of the filter cartridge, and the output end of the delivery pipe extends into the filter cartridge; the end of the delivery pipe close to the filter cartridge is closed by an end block, and the side wall of the delivery pipe is provided with an output port, and the output port is located inside the filter cartridge; The first partition plate and the second partition plate are both arranged inside the filter cartridge and are respectively arranged at both ends of the filter cartridge. Along the axial direction of the filter cartridge, the first partition plate and the second partition plate are both slidably fitted with the filter cartridge, and both are slidably sealed with the filter cartridge. The delivery pipe passes through the first partition plate, and the sleeve is sleeved on the delivery pipe. The sleeve is fitted with the first partition plate and sealed therebetween. One end of the sleeve extends to the side of the first partition plate close to the second partition plate. Along the axial direction of the delivery pipe, the sleeve is slidably fitted with the delivery pipe and is slidably sealed with the delivery pipe. The first partition has a first movement stop point, a second movement stop point and a third movement stop point; the second partition has a first follower stop point and a second follower stop point; When the first baffle is located at the first movement stop point, the second baffle is located at the first follow-up stop point, the first baffle and the second baffle are respectively provided at both ends of the filter cartridge, the sleeve is located on the side of the output port away from the second baffle, and the output port is in an open state; When the first partition is located at the second movement stop point, the second partition is located at the first follow-up stop point, the sleeve fits against the second partition, and the end of the sleeve close to the second partition closes the output port; When the first partition is located at the third movement stop point, the first partition moves to the position corresponding to the second partition at the first follower stop point, the second partition is pushed to the second follower stop point by the sleeve, and the end of the sleeve away from the second partition closes the output port.

2. The filtration device for wastewater treatment according to claim 1, characterized in that: When the second partition is located at the first follower stop point, the second partition is in contact with the end block.

3. The filtering device for wastewater treatment according to claim 1, characterized in that: The sleeve and the filter cartridge are both cylindrical; The first partition is provided with a matching ring, which is in contact with the inner wall of the filter cartridge; along the axial direction of the filter cartridge, the matching ring is slidably matched with the filter cartridge and is slidably sealed with the filter cartridge, and the first partition is fixedly matched with the sleeve; along the circumferential direction of the filter cartridge, the matching ring is fixedly matched with the filter cartridge, the first partition is rotatably matched with the sleeve and is rotatably sealed with the sleeve, and the sleeve is fixedly matched with the delivery pipe; A cleaning rod is fixedly connected to one side of the first partition close to the second partition, the cleaning rod is in contact with the outer wall of the sleeve, the cleaning rod extends axially along the sleeve, and the end face of the cleaning rod and the end face of the sleeve close to the second partition are located in the same plane.

4. The filtering device for wastewater treatment according to claim 3, characterized in that: The second partition plate is fixedly matched with the filter cartridge along the circumference of the filter cartridge.

5. The filtering device for wastewater treatment according to claim 1, characterized in that: The sleeve, the filter cartridge and the delivery pipe are coaxially arranged.

6. The filtering device for wastewater treatment according to claim 1, characterized in that: The central axes of the sleeve, the filter cartridge and the delivery pipe are all arranged horizontally. The side wall of the sleeve is connected with a liquid outlet pipe, and the liquid outlet pipe is located at the bottom of the sleeve.

7. The filtering device for wastewater treatment according to claim 1, characterized in that: The output port extends along the axial direction of the delivery pipe and extends to the edge of the end block.

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