A type of urban sewage treatment equipment

Abstract

This utility model relates to the field of wastewater treatment technology. It provides a wastewater treatment device for urban use, including a treatment tank. A discharge pipe is fixedly connected to the bottom of the treatment tank, and a conveying pump is fixedly connected to the other end of the discharge pipe. A conveying hose is fixedly connected to the discharge port of the conveying pump. An installation plate is fixedly connected to the outer wall of the conveying hose on the side away from the conveying pump. During cleaning, pulling the limiting block causes the limiting block to move the locking rod, disengaging it from the locking groove. This allows the conveying hose to be pulled, causing the installation plate to disengage from the filter cylinder. The installation plate then moves the vertical rod, installation block, and filter plate away from the filter cylinder, allowing for cleaning of the filter plate. Clean water is introduced into the dispersion cylinder through the inlet. The clean water enters the treatment tank through a diversion pipe for cleaning, and then is discharged through the conveying pump and conveying hose. This clean water carries away the sediment in the discharge pipe and conveying hose, facilitating cleaning, installation, and disassembly.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a wastewater treatment device for urban use. Background Technology

[0002] With the acceleration of urbanization and the continuous increase in urban population density, the discharge of domestic sewage and industrial wastewater is constantly increasing, putting severe pressure on the urban water environment. Wastewater treatment, as a key link in improving the urban ecological environment and ensuring the recycling of water resources, directly affects the sustainable development of cities. Currently, although urban wastewater treatment equipment on the market has achieved basic wastewater purification functions, many technical pain points still need to be addressed in practical applications, making it difficult to meet the demands for efficient, convenient, and stable wastewater treatment. Existing wastewater treatment equipment relies solely on a single stirring shaft or rod for mixing, resulting in a simplistic mixing method. The purifying agent often concentrates in localized areas, failing to rapidly and evenly diffuse throughout the entire wastewater system. Urban wastewater contains a large amount of suspended impurities, flocs, and other pollutants, making filter components prone to clogging after prolonged use. Regular disassembly and cleaning are necessary to maintain filtration efficiency. However, existing equipment often employs rigid connections such as bolts and welding, requiring specialized tools for disassembly, making the process cumbersome and time-consuming. Utility Model Content

[0003] To overcome the above-mentioned defects, embodiments of this utility model provide a sewage treatment device for urban use, which solves the technical problem of inconvenience in cleaning in the prior art.

[0004] According to one aspect, at least one embodiment of the present invention provides a wastewater treatment device for urban use, including a treatment tank. A discharge pipe is fixedly connected to the bottom of the treatment tank, and a conveying pump is fixedly connected to the other end of the discharge pipe. A conveying hose is fixedly connected to the discharge port of the conveying pump. An installation plate is fixedly connected to the outer wall of the conveying hose on the side away from the conveying pump. A filter cylinder fixedly connected to the treatment tank is abutted against the top of the installation plate. A drain pipe is fixedly connected to the top of the filter cylinder. Symmetrically distributed vertical rods are fixedly connected to the top of the installation plate. Installation blocks are fixedly connected to the top of the vertical rods. A filter plate is fixedly connected between two installation blocks. Symmetrically distributed L-shaped fixing blocks are fixedly connected to both sides of the bottom of the filter cylinder. Symmetrically distributed through grooves are provided on both sides of the installation plate, and the through grooves are adapted to the L-shaped fixing blocks. Symmetrically distributed locking rods are slidably connected to both sides of the installation plate, and the locking rods engage with the L-shaped fixing blocks.

[0005] For example, in at least one embodiment of the present invention, a wastewater treatment device for urban use is provided, which further includes: a slot is provided in the L-shaped fixing block, and the slot is adapted to the locking rod.

[0006] For example, in at least one embodiment of the present invention, a wastewater treatment device for urban use is provided, which further includes: a limiting block fixedly connected to each of the two clamping rods on the side away from each other, a spring fixedly connected to the side of the limiting block near the mounting plate, and the other end of the spring fixedly connected to the mounting plate, and the spring sleeved with the clamping rod.

[0007] For example, in at least one embodiment of the present invention, a wastewater treatment device for urban use is provided, which further includes: a cover plate fixedly connected to the top of the treatment tank by bolts; a first stirring shaft fixedly connected to the bottom of the cover plate; a dispersion cylinder fixedly connected to the outer wall of the first stirring shaft; the dispersion cylinder being rotatably connected to the cover plate; symmetrically distributed diversion pipes fixedly connected to the bottom of the dispersion cylinder; a protective plate fixedly connected to the treatment tank rotatably connected to the outer wall of the dispersion cylinder; and multiple equidistantly distributed second stirring shafts rotatably connected to the protective plate along its circumferential direction.

[0008] For example, in at least one embodiment of the present invention, a wastewater treatment device for urban use is provided, which further includes: a driving gear fixedly connected to the outer wall of the dispersion cylinder, and a driven gear fixedly connected to the outer wall of one end of the second stirring shaft extending from the top of the protective plate, and the driven gear meshing with the driving gear.

[0009] For example, in at least one embodiment of the present invention, a wastewater treatment device for urban use is provided, which further includes: a plurality of first stirring rods distributed at equal intervals are provided below the dispersion cylinder, and the first stirring rods are fixedly connected to the first stirring shaft; a plurality of second stirring rods distributed at equal intervals are fixedly connected to the outer wall of the second stirring shaft, and the second stirring rods are staggered with the first stirring rods.

[0010] For example, in at least one embodiment of the present invention, a wastewater treatment device for urban use is provided, which further includes: a motor fixedly connected to the top of the cover plate, the output shaft of the motor fixedly connected to the first stirring shaft, and a liquid inlet fixedly connected to the cover plate on one side of the motor, and the liquid inlet is connected to the inside of the dispersion cylinder.

[0011] For example, in at least one embodiment of the present invention, a wastewater treatment device for urban use is provided, which further includes: an inlet fixedly connected to the upper part of the side of the treatment tank away from the filter cylinder, and the inlet communicating with the inner wall of the treatment tank; and a fixing seat fixedly connected to the bottom outer wall of the treatment tank, and the fixing seat fixedly connected to the delivery pump.

[0012] For example, in at least one embodiment of the present invention, a wastewater treatment device for urban use is provided, which further includes: guide grooves are provided on both sides of the inner wall of the filter cylinder, and the inner wall of the guide groove is slidably connected to the mounting block.

[0013] For example, in at least one embodiment of the present invention, a sewage treatment device for urban use is provided, which further includes: a sealing ring fixedly connected to the top of the mounting plate, a sealing gasket fixedly connected to the top of the sealing ring, and a sealing groove provided at the bottom of the filter cylinder, wherein the sealing groove is adapted to the sealing ring.

[0014] The beneficial effects of this utility model are as follows: 1. In this utility model, when in use, sewage is introduced into the treatment tank through the inlet, the motor is started, the output shaft of the motor rotates and drives the first stirring shaft to rotate, the first stirring shaft rotates and drives the first stirring rod and the dispersion cylinder to rotate, the dispersion cylinder rotates and drives the diversion pipe and the drive gear to rotate, the drive gear drives multiple driven gears to drive multiple second stirring shafts to rotate, and the multiple second stirring shafts and the first stirring rod rotate, the purifying agent is introduced into the dispersion cylinder through the liquid inlet, the purifying agent is diverted to various positions in the treatment tank by the rotation of the dispersion cylinder and the diversion pipe, multiple sets of stirring make the purifying agent and sewage fully mixed, and purification is achieved, the purified sewage is transported to the filter cylinder through the discharge pipe, the conveying pump and the conveying hose, filtered by the filter plate, and the purified water is discharged through the drain pipe, which facilitates mixing and improves the treatment efficiency; 2. In this utility model, during cleaning, pulling the limiting block causes the locking rod to disengage from the locking groove, which in turn pulls the conveying hose, causing the mounting plate to disengage from the filter cylinder. This causes the mounting plate to pull the vertical rod, mounting block, and filter plate away from the filter cylinder, allowing the filter plate to be cleaned. Cleaning water is introduced into the dispersion cylinder through the liquid inlet, and the cleaning water enters the treatment tank through the diversion pipe for cleaning. Afterward, it is discharged through the conveying pump and conveying hose, allowing the cleaning water to carry out the sediment in the discharge pipe and conveying hose, facilitating cleaning, installation, and disassembly. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of an urban sewage treatment device in one embodiment of the present invention; Figure 2 for Figure 1 Cross-sectional view in the embodiment; Figure 3 for Figure 1 A schematic diagram of the drive gear installation in the embodiment; Figure 4 for Figure 1 A schematic diagram of filter plate installation in the embodiment; Figure 5 In this utility model Figure 2 Enlarged view of point A.

[0017] In the diagram: 1. Processing tank; 2. Cover plate; 3. Liquid inlet; 4. Motor; 5. Water inlet; 6. Filter cylinder; 7. Discharge pipe; 8. Conveying pump; 9. Fixed base; 10. Conveying hose; 11. Dispersing cylinder; 12. Diverter pipe; 13. First stirring shaft; 14. First stirring rod; 15. Second stirring shaft; 16. Second stirring rod; 17. Drain pipe; 18. Filter plate; 19. Driven gear; 20. Driven gear; 21. Protective plate; 22. Mounting plate; 23. Through groove; 24. Vertical rod; 25. Mounting block; 26. Guide groove; 27. Sealing groove; 28. Sealing gasket; 29. ​​Sealing ring; 30. L-shaped fixing block; 31. Spring; 32. Limiting block; 33. Locking rod; 34. Locking groove. Detailed Implementation The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0018] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0019] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] like Figures 1-5 As shown, this invention illustrates a wastewater treatment device for urban use according to one embodiment of the present invention. It includes a treatment tank 1, a discharge pipe 7 fixedly connected to the bottom of the treatment tank 1, a conveying pump 8 fixedly connected to the other end of the discharge pipe 7, a conveying hose 10 fixedly connected to the discharge port of the conveying pump 8, an mounting plate 22 fixedly connected to the outer wall of the conveying hose 10 away from the conveying pump 8, a filter cylinder 6 fixedly connected to the treatment tank 1 abutting the top of the mounting plate 22, a drain pipe 17 fixedly connected to the top of the filter cylinder 6, symmetrically distributed vertical rods 24 fixedly connected to the top of the mounting plate 22, and mounting blocks 25 fixedly connected to the top of the vertical rods 24. A filter plate 18 is fixedly connected between the mounting blocks 25. Symmetrically distributed L-shaped fixing blocks 30 are fixedly connected to both sides of the bottom of the filter cylinder 6. Symmetrically distributed through slots 23 are provided on both sides of the mounting plate 22, and these through slots 23 are adapted to the L-shaped fixing blocks 30. Symmetrically distributed locking rods 33 are slidably connected to both sides of the mounting plate 22, and these locking rods 33 engage with the L-shaped fixing blocks 30. The mounting plate 22 drives the vertical rod 24, mounting blocks 25, and filter plate 18 into the filter cylinder 6. When the mounting plate 22 abuts against the filter cylinder 6, the locking rods 33 enter the L-shaped fixing blocks 30 and engage with them to fix the mounting plate 22, facilitating installation, disassembly, and cleaning.

[0024] The filter plate 18 is made of 304 stainless steel multi-layer composite filter screen. The upper layer has a pore size of 80-100μm (filtering large suspended impurities), the middle layer has a pore size of 20-30μm (filtering fine flocs), and the lower layer is an activated carbon fiber layer (adsorbing odors and small molecule organic matter). The filter plate thickness is 15-20mm, and the effective filtration area matches the cross-sectional area of ​​the filter cylinder 6 by ≥90%. The conveying pump 8 is a centrifugal pump with a rated flow rate of 8-15m³ / h and a rated head of 15-25m. The material is cast iron lined with rubber (resistant to sewage corrosion), and the inlet pipe diameter is the same as the outlet pipe diameter (e.g., DN50).

[0025] In some examples, the L-shaped fixing block 30 has a slot 34, which is adapted to the locking rod 33. The slot 34 facilitates the locking rod 33 to enter the L-shaped fixing block 30 to limit the mounting plate 22.

[0026] In some examples, a limiting block 32 is fixedly connected to the side of the two locking rods 33 that are far apart from each other. A spring 31 is fixedly connected to the side of the limiting block 32 that is close to the mounting plate 22, and the other end of the spring 31 is fixedly connected to the mounting plate 22. The spring 31 is sleeved with the locking rod 33, and the spring 31 facilitates the reset of the locking rod 33, so that the locking rod 33 enters the locking groove 34.

[0027] In some examples, the top of the treatment tank 1 is fixedly connected to a cover plate 2 by bolts, the bottom of the cover plate 2 is fixedly connected to a first stirring shaft 13, the outer wall of the first stirring shaft 13 is fixedly connected to a dispersion cylinder 11, and the dispersion cylinder 11 is rotatably connected to the cover plate 2. The bottom of the dispersion cylinder 11 is fixedly connected to symmetrically distributed diversion pipes 12, and the outer wall of the dispersion cylinder 11 is rotatably connected to a protective plate 21 fixedly connected to the treatment tank 1. Multiple equidistantly distributed second stirring shafts 15 are rotatably connected to the protective plate 21 along its circumference. The dispersion cylinder 11 and the diversion pipes 12 facilitate the dispersion of the purifying agent into the treatment tank 1, and facilitate the thorough mixing of the purifying agent with the sewage.

[0028] The purifying agent is PAC (polyaluminum chloride) (concentration 10%-15%), which is connected to the inlet 3 through a metering pump (flow rate 0.1-0.5 m³ / h) to achieve quantitative and continuous introduction of the purifying agent. The metering pump is linked with the motor 4. When the motor starts, the metering pump starts synchronously to ensure that the purifying agent and the sewage are mixed synchronously.

[0029] In some examples, the outer wall of the dispersion cylinder 11 is fixedly connected to the drive gear 19, and the outer wall of the end of the second stirring shaft 15 extending out of the top of the protective plate 21 is fixedly connected to the driven gear 20, and the driven gear 20 meshes with the drive gear 19. The rotation of the dispersion cylinder 11 drives the drive gear 19 to rotate, and then drives the second stirring shaft 15 to rotate through multiple driven gears 20.

[0030] In some examples, multiple sets of equidistantly distributed first stirring rods 14 are provided below the dispersion cylinder 11, and the first stirring rods 14 are fixedly connected to the first stirring shaft 13. Multiple sets of equidistantly distributed second stirring rods 16 are fixedly connected to the outer wall of the second stirring shaft 15, and the second stirring rods 16 and the first stirring rods 14 are staggered. The wastewater and the purifying agent are fully mixed through the second stirring rods 16 and the first stirring rods 14.

[0031] In some examples, a motor 4 is fixedly connected to the top of the cover plate 2. The output shaft of the motor 4 is fixedly connected to the first stirring shaft 13. The model of the motor 4 is YE5-112M-2. A liquid inlet 3 is fixedly connected to the cover plate 2 on one side of the motor 4. The liquid inlet 3 is connected to the inside of the dispersion cylinder 11. Purifying agent is introduced into the dispersion cylinder 11 through the liquid inlet 3. The first stirring shaft 13 is driven to rotate by the motor 4, thereby causing multiple sets of first stirring rods 14 and second stirring rods 16 to rotate.

[0032] In some examples, an inlet 5 is fixedly connected to the upper part of the side of the treatment tank 1 away from the filter cylinder 6, and the inlet 5 is connected to the inner wall of the treatment tank 1. A fixing seat 9 is fixedly connected to the bottom outer wall of the treatment tank 1, and the fixing seat 9 is fixedly connected to the transfer pump 8. Wastewater is introduced into the treatment tank 1 through the inlet 5.

[0033] In some examples, guide grooves 26 are provided on both inner walls of the filter cylinder 6. The inner wall of the guide groove 26 is slidably connected to the mounting block 25. The guide groove 26 is used to position the filter plate 18 and the mounting block 25 and guides the movement of the mounting block 25.

[0034] In some examples, a sealing ring 29 is fixedly connected to the top of the mounting plate 22, a sealing gasket 28 is fixedly connected to the top of the sealing ring 29, and a sealing groove 27 is provided at the bottom of the filter cartridge 6, and the sealing groove 27 is adapted to the sealing ring 29. The sealing between the mounting plate 22 and the filter cartridge 6 is achieved through the sealing groove 27, the sealing gasket 28 and the sealing ring 29.

[0035] Working principle and usage process of this utility model: In this application, during use, wastewater is introduced into the treatment tank 1 through the inlet 5. The motor 4 is started, and the output shaft of the motor 4 rotates, driving the first stirring shaft 13 to rotate. The rotation of the first stirring shaft 13 drives the first stirring rod 14 and the dispersion cylinder 11 to rotate. The rotation of the dispersion cylinder 11 drives the diversion pipe 12 and the drive gear 19 to rotate. The drive gear 19, through multiple driven gears 20, causes multiple second stirring shafts 15 to rotate, causing multiple second stirring shafts 15 and the first stirring rod 14 to rotate. The purifying agent is introduced into the dispersion cylinder 11 through the liquid inlet 3. The purifying agent is diverted to various positions in the treatment tank 1 by the rotation of the dispersion cylinder 11 and the diversion pipe 12. Multiple sets of stirring ensure that the purifying agent and wastewater are fully mixed, achieving purification. The purified wastewater is transported to the filter cylinder 6 through the discharge pipe 7, the conveying pump 8, and the conveying hose 10. After being filtered by the filter plate 18, the purified water is discharged through the drain pipe 17, which facilitates mixing and improves the treatment efficiency. In this application, during cleaning, pulling the limiting block 32 causes the locking rod 33 to disengage from the locking groove 34, which in turn pulls the conveying hose 10, causing the mounting plate 22 to disengage from the filter cylinder 6. This causes the mounting plate 22 to disengage the vertical rod 24, mounting block 25, and filter plate 18 from the filter cylinder 6, allowing the filter plate 18 to be cleaned. Cleaning water is introduced into the dispersion cylinder 11 through the liquid inlet 3. The cleaning water enters the treatment tank 1 through the diversion pipe 12 for cleaning, and then is discharged through the conveying pump 8 and the conveying hose 10. This allows the cleaning water to carry out the sediment in the discharge pipe 7 and the conveying hose 10, facilitating cleaning, installation, and disassembly.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A wastewater treatment device for urban use, comprising a treatment tank (1), characterized in that: The bottom of the processing tank (1) is fixedly connected to a discharge pipe (7), and the other end of the discharge pipe (7) is fixedly connected to a conveying pump (8). The discharge port of the conveying pump (8) is fixedly connected to a conveying hose (10). The outer wall of the conveying hose (10) away from the conveying pump (8) is fixedly connected to an mounting plate (22). The top of the mounting plate (22) abuts against a filter cylinder (6) fixedly connected to the processing tank (1). The top of the filter cylinder (6) is fixedly connected to a drain pipe (17). The top of the mounting plate (22) is fixedly connected to a symmetrically distributed... The vertical rod (24) of the cloth is fixedly connected to the top of the vertical rod (24), and a filter plate (18) is fixedly connected between the two mounting blocks (25). The bottom sides of the filter cylinder (6) are fixedly connected to symmetrically distributed L-shaped fixing blocks (30). The mounting plate (22) has symmetrically distributed through grooves (23) on both sides, and the through grooves (23) are adapted to the L-shaped fixing blocks (30). The mounting plate (22) has symmetrically distributed locking rods (33) slidably connected on both sides, and the locking rods (33) are engaged with the L-shaped fixing blocks (30).

2. The urban sewage treatment equipment according to claim 1, characterized in that: The L-shaped fixing block (30) has a slot (34) inside, and the slot (34) is compatible with the locking rod (33).

3. The urban sewage treatment equipment according to claim 1, characterized in that: Limiting blocks (32) are fixedly connected to the two clamping rods (33) on the side away from each other. A spring (31) is fixedly connected to the side of the limiting block (32) near the mounting plate (22), and the other end of the spring (31) is fixedly connected to the mounting plate (22). The spring (31) is sleeved with the clamping rod (33).

4. The urban sewage treatment equipment according to claim 1, characterized in that: The top of the processing tank (1) is fixedly connected to a cover plate (2) by bolts. The bottom of the cover plate (2) is fixedly connected to a first stirring shaft (13). The outer wall of the first stirring shaft (13) is fixedly connected to a dispersion cylinder (11), and the dispersion cylinder (11) is rotatably connected to the cover plate (2). The bottom of the dispersion cylinder (11) is fixedly connected to symmetrically distributed diversion pipes (12). The outer wall of the dispersion cylinder (11) is rotatably connected to a protective plate (21) fixedly connected to the processing tank (1). Multiple equidistant second stirring shafts (15) are rotatably connected to the protective plate (21) along its circumferential direction.

5. A wastewater treatment device for urban use according to claim 4, characterized in that: The outer wall of the dispersion cylinder (11) is fixedly connected to the drive gear (19), and the outer wall of the end of the second stirring shaft (15) extending out of the top of the protective plate (21) is fixedly connected to the driven gear (20), and the driven gear (20) meshes with the drive gear (19).

6. A wastewater treatment device for urban use according to claim 4, characterized in that: The dispersion cylinder (11) is provided with multiple sets of equidistant first stirring rods (14) below it, and the first stirring rods (14) are fixedly connected to the first stirring shaft (13). The outer wall of the second stirring shaft (15) is fixedly connected with multiple sets of equidistant second stirring rods (16), and the second stirring rods (16) and the first stirring rods (14) are staggered.

7. A wastewater treatment device for urban use according to claim 4, characterized in that: A motor (4) is fixedly connected to the top of the cover plate (2). The output shaft of the motor (4) is fixedly connected to the first stirring shaft (13). A liquid inlet (3) is fixedly connected to the cover plate (2) on one side of the motor (4), and the liquid inlet (3) is connected to the inside of the dispersion cylinder (11).

8. A wastewater treatment device for urban use according to claim 1, characterized in that: The treatment box (1) has an inlet (5) fixedly connected to the upper part of the side away from the filter cylinder (6), and the inlet (5) is connected to the inner wall of the treatment box (1). The bottom outer wall of the treatment box (1) is fixedly connected to a fixing seat (9), and the fixing seat (9) is fixedly connected to the delivery pump (8).

9. A wastewater treatment device for urban use according to claim 1, characterized in that: The filter cylinder (6) has guide grooves (26) on both sides of its inner wall, and the inner wall of the guide grooves (26) is slidably connected to the mounting block (25).

10. A wastewater treatment device for urban use according to claim 1, characterized in that: A sealing ring (29) is fixedly connected to the top of the mounting plate (22), and a sealing gasket (28) is fixedly connected to the top of the sealing ring (29). A sealing groove (27) is opened at the bottom of the filter cylinder (6), and the sealing groove (27) is compatible with the sealing ring (29).

Images