Energy-saving building water supply and drainage device capable of preventing overflow and filtering impurities

By introducing filter cartridges, crushing parts, backwash components and adjustment components into the drainage device, the blockage and water accumulation problems of the existing device during heavy rain are solved, rapid drainage and overflow prevention functions are achieved, and the stability and efficiency of the drainage system are ensured.

CN120649552APending Publication Date: 2025-09-16SHUOKANG CONSTR (SUZHOU) CO LTD
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Patent Information

Application Number
CN202511039503.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-28
Publication Date
2025-09-16

AI Technical Summary

Technical Problem

When the instantaneous rainfall exceeds the designed flow rate of the existing drainage device, the water will easily flow back into the manhole, causing water accumulation on the road. In addition, the solid waste in the rainwater may clog the pipes, making it impossible to effectively alleviate the water accumulation problem.

Method used

An energy-saving building water supply and drainage device with overflow prevention and impurity filtering functions is used, including a filter cartridge, a crushing part, a backwash component, an overflow prevention component and an adjustment component. By crushing large particles of impurities, backwashing the filter, a dual-channel bypass structure and an adjustable drain hole design, rapid drainage and blockage prevention are achieved.

Benefits of technology

It effectively crushes and removes impurities on the filter plate, quickly diverts rainwater, prevents overflow, ensures the stability and efficiency of the drainage system, and reduces road waterlogging and environmental impact.

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Abstract

The invention discloses an energy-saving building water supply and drainage device capable of preventing overflow and filtering impurities, and relates to the technical field of drainage, the energy-saving building water supply and drainage device comprises a drainage body and a drainage inspection well cover, the drainage body is located in sewers on the two sides of a road, and the drainage body comprises a filtering assembly, a water inlet pipe and a water outlet pipe; the filter assembly comprises a filter cartridge clamped on the inner wall of the upper end of the sewer through a slide rail; through cooperation of a crushing part and a backwashing assembly, the crushing part cuts and crushes impurities intercepted on the upper surface of a first filter plate, large-particle impurities are crushed into fine particles, a washing head on the inner side of an annular pipe sprays a high-pressure water column to the bottom of the first filter plate at an elevation angle, and the high-pressure water column penetrates through pores of the first filter plate; small particles attached to the surface of the filter screen are stripped, and stripped impurities flow downwards along with backwashing water flow; by crushing impurities and backwashing water flow, the problem of blockage on the first filter plate can be effectively solved, the flow speed of rainwater is increased, and the accumulated water flow guide rate is increased.
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Description

Technical Field

[0001] The present invention relates to the technical field related to drainage, and in particular to an energy-saving building water supply and drainage device with the functions of preventing overflow and filtering impurities. Background Art

[0002] With urbanization, urban flooding caused by extreme rainstorms is becoming increasingly serious. The core problem lies in the drainage system's inability to cope with sudden, high-intensity rainfall. When rainfall in a short period exceeds the design standards of the drainage network, water quickly forms on the road surface. If it cannot be effectively drained within 30 minutes, the depth of the water can rise by 5-10 centimeters per hour, ultimately leading to traffic paralysis, underground backflow, and even casualties.

[0003] Existing drainage systems often use a single pipe diameter design. When instantaneous rainfall exceeds the pipe's designed flow rate, water can easily backflow through manholes, causing roadway flooding. Furthermore, rainwater can be contaminated with solid waste. If the solid waste isn't removed promptly, it can clog subsequent pipes, making it impossible to effectively alleviate the accumulated water. Therefore, the present invention proposes an energy-saving building water supply and drainage system with overflow prevention and impurity filtration. Summary of the Invention

[0004] The purpose of the present invention is to provide an energy-saving building water supply and drainage device with overflow prevention and impurity filtering capabilities, so as to solve the problem that the existing drainage devices proposed in the above background technology mostly adopt a single pipe diameter design. When the instantaneous rainfall exceeds the design flow rate of the pipeline, the water flow is likely to flow back at the manhole, causing water accumulation on the road. In addition, some solid waste will be mixed in the rainwater. If the solid waste is not cleaned up in time, it may clog the subsequent pipelines, resulting in the problem that the accumulated water cannot be effectively alleviated.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] The drain filter is connected to the drainpipe through which the filter is drawn, and the filter is connected to the drain filter through which the filter is drawn.

[0007] Optionally, a partition is provided at the bottom of the water tank.

[0008] Optionally, the filter assembly also includes a first filter plate and a rotating shaft, the first filter plate is arranged inside the filter cartridge, the rotating shaft is installed in the middle of the sewer through a bearing, and the upper end of the rotating shaft is connected to the bottom of the adjusting assembly, and the lower end of the rotating shaft is fixedly connected to the output end of the driving motor arranged at the bottom of the water tank, and a crushing part is provided on the outside of the rotating shaft and on the upper surface of the first filter plate.

[0009] Optionally, the crushing part includes a sleeve plate fixedly mounted on the outside of the rotating shaft, and a plurality of crushing knives for crushing large particles of impurities are arranged on the outer side of the sleeve plate.

[0010] Optionally, a second filter plate is provided at the water inlet of the water tank.

[0011] Optionally, the overflow prevention component includes a connecting pipe connecting the water inlet pipe and the water outlet pipe. There are two groups of connecting pipes, which are respectively arranged on the outside of the water inlet pipe and the water outlet pipe. The upper end of the connecting pipe passes through the inner side of the water inlet pipe and is provided with a connecting piece, and a filter pad is provided on the inside of the connecting piece.

[0012] Optionally, the backwash assembly includes an annular tube mounted on the outside of the filter cartridge, the inner side of the annular tube passes through the inner ring of the filter cartridge and is provided with a plurality of flushing heads, the flushing heads directly act on the bottom of the first filter plate, the outer side of the annular tube is connected to a water supply pipe, the other end of the water supply pipe is connected to the output end of a water pump, the water pump is arranged on the same side of the drive motor, and the input end of the water pump is connected to the inside of the water tank.

[0013] Optionally, a plurality of water-permeable holes are arranged around the upper surface of the drainage manhole cover, and a plurality of drainage holes are staggeredly distributed about the plurality of water-permeable holes on the top of the drainage manhole cover.

[0014] Optionally, the adjustment component includes a fixed cover arranged at the bottom of the drainage manhole cover, the interior of the fixed cover is hollow, and the outer ring of the fixed cover is provided with a plurality of rectangular slots, a movable block is movably provided on the fixed cover, and the movable block is passed through the interior of the fixed cover and is connected to a movable disk.

[0015] Optionally, the corner ends of the movable disk slide on the rectangular slots, and movable seats are provided at the corner ends of the movable disk, and the movable seats are movably connected with connecting rods. The other ends of several of the connecting rods are movably connected to another movable seat at the bottom of the sealing plate, and the sealing plate is rotatably connected about the inner side of the drainage hole through a pin shaft passed through one side, and the sealing plate is adapted to the drainage hole.

[0016] The beneficial effects of the present invention are:

[0017] 1. In this invention, the pulverizing unit and backwash assembly work together to cut and crush impurities intercepted on the upper surface of the first filter plate, pulverizing large impurities into fine particles. A flushing head inside the annular tube sprays a high-pressure water jet at an elevated angle toward the bottom of the first filter plate, generating shear force. The high-pressure water jet penetrates the pores of the first filter plate, stripping away tiny particles adhering to the filter surface. The removed impurities then flow downward with the backwash water. This combination of impurity pulverization and backwashing effectively eliminates clogging on the first filter plate, accelerates the flow of rainwater, alleviates water accumulation on construction roads, and speeds up the diversion of accumulated water.

[0018] 2. The present invention automatically adjusts drainage patterns based on varying rainfall conditions through the coordination of the permeable and drain holes in the manhole cover, as well as the flexible opening and closing of the drain holes by the adjustment assembly. During light rain, water is drained only through the permeable holes, preventing the ingress of solid impurities. During heavy rain, the drain holes open and work together with the permeable holes to quickly drain large amounts of rainwater, effectively alleviating road waterlogging.

[0019] 3. The overflow prevention component of this invention utilizes a dual-channel bypass structure. When the water level in the inlet pipe rises to a certain level, the water is discharged through the connecting pipe to the outlet pipe, effectively preventing rainwater overflow. Furthermore, a filter pad installed in the connecting pipe filters the discharged water, preventing impurities from clogging the connecting pipe, ensuring a stable and reliable overflow prevention function and avoiding the impact of rainwater overflow on roads and the surrounding environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of an energy-saving building water supply and drainage device with overflow prevention and impurity filtering capabilities according to the present invention;

[0021] Figure 2 It is a front view of the present invention;

[0022] Figure 3 is a cross-sectional view of the present invention;

[0023] Figure 4 Schematic diagram of the structure of the backwash component and the filtration component in the present invention;

[0024] Figure 5 for Figure 3 Enlarged view of point A in the middle;

[0025] Figure 6 Schematic diagram of the structure of the drainage manhole cover in the present invention;

[0026] Figure 7 A diagram showing the combination of the drainage manhole cover and the adjustment assembly of the present invention;

[0027] Figure 8 It is a structural schematic diagram of the adjustment component in the present invention.

[0028] The numbers in the figure are:

[0029] 1. Drainage body;

[0030] 2. Filter assembly; 201. Filter cartridge; 202. First filter plate; 203. Rotating shaft; 204. Crushing unit; 2041. Sleeve plate; 2042. Crushing blade; 205. Driving motor;

[0031] 3. Water inlet pipe; 4. Water outlet pipe;

[0032] 5. Drainage manhole cover; 501. Water hole; 502. Drain hole;

[0033] 6. Adjustment assembly; 601. Fixed cover; 602. Rectangular slot; 603. Movable block; 604. Moving plate; 605. Movable seat; 606. Connecting rod; 607. Closing plate; 608. Pin;

[0034] 7. Water delivery channel; 8. Water storage tank; 801. Second filter plate; 9. Partition plate;

[0035] 10. Overflow prevention assembly; 1001. Connecting pipe; 1002. Connecting piece; 1003. Filter pad;

[0036] 11. Backwash assembly; 1101. Ring pipe; 1102. Water supply pipe; 1103. Water pump; 1104. Flushing head. DETAILED DESCRIPTION

[0037] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0038] The device of the present invention will be described below in conjunction with preferred embodiments thereof.

[0039] Example 1:

[0040] As attached Figure 1 To the attached Figure 8As shown, the present invention provides an energy-saving building water supply and drainage device with overflow prevention and impurity filtering, including a drainage body 1 and a drainage manhole cover 5. The drainage body 1 is located in the sewers on both sides of the road. The drainage body 1 includes a filter assembly 2, an inlet pipe 3 and an outlet pipe 4. The filter assembly 2 includes a filter cartridge 201 connected to the inner wall of the upper end of the sewer through a slide rail. The upper and lower ends of the filter cartridge 201 are fixedly connected to the inlet pipe 3 and the outlet pipe 4 respectively. The drainage manhole cover 5 is connected to the groove at the top position of the sewer on both sides of the road to block rainwater from entering. Impurities, a drainage manhole cover 5 is provided with an adjustment component 6 with adjustable drainage volume, the bottom end of the outlet pipe 4 is connected with a water delivery channel 7 for transmitting rainwater entering the sewer, and a water storage tank 8 is further provided at the bottom of the sewer below the outlet pipe 4. The water storage tank 8 is connected to the bottom of the water delivery channel 7, and an overflow prevention component 10 is provided between the water inlet pipe 3 and the outlet pipe 4 to prevent overflow when too much rainwater enters. A backwash component 11 acting on the filter component 2 is provided on the inner side of the filter cartridge 201, and a partition 9 is provided at the bottom of the water storage tank 8.

[0041] Example 2:

[0042] As attached Figure 3 To the attached Figure 4 As shown, this embodiment is basically the same as the previous embodiment, except that the filter assembly 2 further includes a first filter plate 202 and a rotating shaft 203. The first filter plate 202 is arranged inside the filter cartridge 201, and the rotating shaft 203 is installed in the middle of the sewer through a bearing. The upper end of the rotating shaft 203 is connected to the bottom of the adjustment assembly 6, and the lower end of the rotating shaft 203 is fixedly connected to the output end of the drive motor 205 arranged at the bottom of the water tank 8. A crushing part 204 is provided on the outside of the rotating shaft 203 and on the upper surface of the first filter plate 202.

[0043] The crushing part 204 includes a sleeve plate 2041 fixedly mounted on the outside of the rotating shaft 203. A plurality of crushing knives 2042 for crushing large particles of impurities are arranged around the outer side of the sleeve plate 2041.

[0044] A second filter plate 801 is provided at the water inlet of the water storage tank 8 .

[0045] The backwash assembly 11 includes an annular tube 1101 that is sleeved on the outside of the filter cartridge 201. The inner side of the annular tube 1101 penetrates into the interior of the filter cartridge 201 and is annularly provided with a plurality of flushing heads 1104. The flushing heads 1104 directly act on the bottom of the first filter plate 202. The outer side of the annular tube 1101 is connected to a water supply pipe 1102. The other end of the water supply pipe 1102 is connected to the output end of a water pump 1103. The water pump 1103 is arranged on the same side of the drive motor 205, and the input end of the water pump 1103 is connected to the interior of the water tank 8.

[0046] Specifically, when cleaning the impurities blocked on the upper surface of the first filter plate 202, the motor 205 is first driven to rotate the sleeve plate 2041 at high speed through the rotating shaft 203. The crushing knife 2042 on the outer side of the sleeve plate 2041 cuts and crushes the impurities intercepted on the upper surface of the first filter plate 202. The crushed fine particles pass through the pores of the first filter plate 202 with the water flow and enter the cavity between the filter cartridge 201 and the outlet pipe 4. With the cooperation of the backwash component 11, the water pump 1103 draws the clean water filtered by the second filter plate 801 from the bottom of the water storage tank 8. The water flows through the water supply pipe 1102 and enters the annular pipe 1101, forming a high-pressure circulation. The flushing head 1104 on the side sprays a high-pressure water column at an elevated angle toward the bottom of the first filter plate 202, generating a shear force. The high-pressure water column penetrates the pores of the first filter plate 202, peeling off the tiny particles attached to the surface of the filter screen. The peeled impurities flow downward with the backwash water flow. The problem of blockage on the first filter plate 202 can be effectively solved by crushing the impurities and backwashing the water flow, thereby accelerating the flow rate of rainwater, and effectively alleviating the accumulation of water on the construction road and accelerating the rate of diversion of the accumulated water. In addition, through the dynamic linkage between the crushing part 204 and the backwash component 11, the dual self-cleaning function of the first filter plate 202 is realized, solving the problem of easy clogging and frequent maintenance of traditional filter screens.

[0047] Example 3:

[0048] As attached Figure 3 To the attached Figure 5 As shown, this embodiment is basically the same as the previous embodiment, except that the overflow prevention component 10 includes a connecting pipe 1001 connecting the water inlet pipe 3 and the water outlet pipe 4, and there are two groups of connecting pipes 1001, which are respectively arranged on the outside of the water inlet pipe 3 and the water outlet pipe 4. The upper end of the connecting pipe 1001 passes through the inner side of the water inlet pipe 3 and is provided with a connecting piece 1002, and a filter pad 1003 is provided on the inner side of the connecting piece 1002.

[0049] Specifically, during use, rainwater will enter the water inlet pipe 3. When too much water enters the water inlet pipe 3, the water inlet pipe 3 will be blocked, making it impossible to drain. Or when the first filter plate 202 blocks the water inlet pipe 3 and the water level rises to the top of the outlet pipe 4, the water in the water inlet pipe 3 will be discharged through the connecting pipe 1001 when it rises to a certain liquid level. The water discharged through the connecting pipe 1001 is directly discharged into the outlet pipe 4, thereby effectively achieving the purpose of overflow prevention. Moreover, through the provision of the filter pad 1003, the discharged water can be filtered, thereby preventing impurities in the water from clogging the connecting pipe 1001. Through the combination of the dual-channel bypass structure and the filter pad 1003, the intelligent distribution of drainage flow during heavy rain is achieved.

[0050] Example 4:

[0051] As attached Figure 6 To the attached Figure 8 As shown, this embodiment is basically the same as the previous embodiment, except that a plurality of water-permeable holes 501 are arranged around the upper surface of the drainage manhole cover 5 , and a plurality of drainage holes 502 are staggeredly distributed on the top of the drainage manhole cover 5 with respect to the plurality of water-permeable holes 501 .

[0052] The adjustment component 6 includes a fixed cover 601 arranged at the bottom of the drainage manhole cover 5. The interior of the fixed cover 601 is hollowed out, and the outer ring of the fixed cover 601 is provided with a plurality of rectangular slots 602. A movable block 603 is movably penetrated on the fixed cover 601. The movable block 603 is penetrated into the interior of the fixed cover 601 and is connected to a movable disk 604. The corner ends of the movable disk 604 slide on the rectangular slots 602, and the corner ends of the movable disk 604 are provided with movable seats 605. The movable seats 605 are movably connected with connecting rods 606. The other ends of the plurality of connecting rods 606 are movably connected to another movable seat 605 at the bottom of the sealing plate 607. The sealing plate 607 is rotatably connected to the inner side of the drainage hole 502 through a pin shaft 608 penetrated on one side, and the sealing plate 607 is adapted to the drainage hole 502.

[0053] Specifically, when it is drizzling, the rainfall is small and rainwater can accumulate on the road surface relatively slowly. At this time, the drainage system does not need to open the large-aperture drainage holes 502 to cope with large amounts of rainwater. Since the permeable holes 501 are in a normally open state and their densely distributed design allows rainwater to evenly penetrate through these small holes into the drainage pipe. In this process, the adjustment component 6 is in the initial state, and the sealing plate 607 tightly blocks the drainage hole 502, preventing solid impurities from entering the drainage manhole cover 5 through the drainage hole 502. Solid impurities will be blocked outside by the sealing plate 607 and can only flow on the road surface with the rainwater or stay on the surface of the manhole cover without clogging the drainage hole 502, thereby ensuring the normal drainage function of the drainage manhole cover 5 in light rain and the smooth flow of the drainage hole 502 during subsequent heavy rain.

[0054] When encountering heavy rain or water accumulation on the road, the movable block 603 is pushed to move forward along the preset track, and a thrust is applied to the movable block 603 in the direction of the inside of the fixed cover 601. Under the action of this thrust, the movable block 603 moves inward along the hole penetrated on the fixed cover 601. Since the movable block 603 penetrates into the inside of the fixed cover 601 and is connected to the movable plate 604, the movement of the movable block 603 will drive the movable plate 604 to move together, and the corner end of the movable plate 604 slides on the rectangular slot 602. The rectangular slot 602 provides a precise guide for the movement of the movable plate 604, so that it can only slide along the path specified by the rectangular slot 602. As the movable block 603 is continuously pushed inward, the movable plate 604 moves inward along the rectangular slot 602. The fixed cover 601 slides deep inside, and as the movable disk 604 continues to slide, the connecting rod 606 is gradually pulled. Since both ends of the connecting rod 606 are movable, this angle change generates a pulling force, pulling the sealing plate 607 to rotate around the pin 608. The pin 608 serves as the rotation center of the sealing plate 607 and is fixed to the inner side of the drain hole 502, ensuring the stability of the sealing plate 607's rotation. As the connecting rod 606 continues to pull, the sealing plate 607 gradually moves away from the position of the drain hole 502, and the originally obscured drain hole 502 gradually becomes exposed. When the movable block 603 is pushed to the set position and the movable disk 604 slides to the corresponding end point of the rectangular slot 602, the connecting rod 606 pulls the sealing plate 607 to rotate to the maximum angle, and the drain hole 502 is now fully opened. At this time, the larger diameter drain hole 502 can function simultaneously with the permeable hole 501, allowing a large amount of rainwater to quickly flow into the drainage pipe through these two channels, greatly improving drainage efficiency and quickly alleviating road waterlogging.

[0055] The embodiments of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present invention. Any changes, modifications, replacements and variations of the above embodiments by ordinary technicians in this field within the scope of the present invention should be included in the scope of protection of the present invention.

Claims

1. An energy-saving building water supply and drainage device with overflow prevention and impurity filtering, characterized by: The invention comprises a drainage body (1) and a drainage manhole cover (5), wherein the drainage body (1) is located in the sewers on both sides of the road, the drainage body (1) comprises a filter assembly (2), a water inlet pipe (3) and a water outlet pipe (4), the filter assembly (2) comprises a filter cartridge (201) which is clamped to the inner wall of the upper end of the sewer via a slide rail, the upper and lower ends of the filter cartridge (201) are fixedly connected to the water inlet pipe (3) and the water outlet pipe (4), respectively, the drainage manhole cover (5) is clamped in a groove at the top position of the sewers on both sides of the road, and is used to block impurities in rainwater, the drainage manhole cover ( 5) is provided with an adjustment component (6) with adjustable drainage volume, the bottom end of the outlet pipe (4) is connected to a water transmission channel (7) for transmitting rainwater entering the sewer, and a water storage tank (8) is further provided at the bottom of the sewer below the outlet pipe (4), the water storage tank (8) is connected to the bottom of the water transmission channel (7), an anti-overflow component (10) is provided between the water inlet pipe (3) and the outlet pipe (4) for preventing overflow when excessive rainwater enters, and a backwash component (11) is provided on the inner side of the filter cartridge (201) for acting on the filter component (2).

2. The energy-saving building water supply and drainage device with overflow prevention and impurity filtering according to claim 1 is characterized in that: A partition (9) is provided at the bottom of the water storage tank (8).

3. The energy-saving building water supply and drainage device with overflow prevention and impurity filtering functions according to claim 1, characterized in that: The filter assembly (2) further comprises a first filter plate (202) and a rotating shaft (203), wherein the first filter plate (202) is arranged inside the filter cartridge (201), and the rotating shaft (203) is installed in the middle of the sewer via a bearing, and the upper end of the rotating shaft (203) is connected to the bottom of the regulating assembly (6), and the lower end of the rotating shaft (203) is fixedly connected to the output end of a driving motor (205) arranged at the bottom of the water storage tank (8). A crushing portion (204) is provided outside the rotating shaft (203) and on the upper surface of the first filter plate (202).

4. The energy-saving building water supply and drainage device with overflow prevention and impurity filtering functions according to claim 3, characterized in that: The crushing part (204) comprises a sleeve plate (2041) fixedly sleeved on the outside of the rotating shaft (203), and a plurality of crushing knives (2042) for crushing large particles of impurities are arranged around the outer side of the sleeve plate (2041).

5. The energy-saving building water supply and drainage device with overflow prevention and impurity filtering functions according to claim 1, characterized in that: The water inlet of the water storage tank (8) is provided with a second filter plate (801).

6. The energy-saving building water supply and drainage device with overflow prevention and impurity filtering functions according to claim 1, characterized in that: The overflow prevention assembly (10) comprises a connecting pipe (1001) connecting the water inlet pipe (3) and the water outlet pipe (4). Two groups of the connecting pipes (1001) are provided, which are respectively arranged on the outside of the water inlet pipe (3) and the water outlet pipe (4). The upper end of the connecting pipe (1001) passes through the inside of the water inlet pipe (3) and is provided with a connecting piece (1002). The inside of the connecting piece (1002) is provided with a filter pad (1003).

7. The energy-saving building water supply and drainage device with overflow prevention and impurity filtering functions according to claim 1, characterized in that: The backwash assembly (11) comprises an annular tube (1101) sleeved on the outside of the filter cartridge (201); the inner side of the annular tube (1101) extends through the inner side of the filter cartridge (201) and is provided with a plurality of flushing heads (1104); the flushing heads (1104) act directly on the bottom of the first filter plate (202); the outer side of the annular tube (1101) is connected to a water supply pipe (1102); the other end of the water supply pipe (1102) is connected to the output end of a water pump (1103); the water pump (1103) is arranged on the same side as the drive motor (205), and the input end of the water pump (1103) is connected to the inside of the water storage tank (8).

8. The energy-saving building water supply and drainage device with overflow prevention and impurity filtering functions according to claim 1, characterized in that: The upper surface of the drainage manhole cover (5) is provided with a plurality of water-permeable holes (501) in a circle, and the top of the drainage manhole cover (5) is provided with a plurality of drainage holes (502) staggeredly distributed about the plurality of water-permeable holes (501).

9. The energy-saving building water supply and drainage device with overflow prevention and impurity filtering functions according to claim 1, characterized in that: The adjustment assembly (6) comprises a fixed cover (601) arranged at the bottom of the drainage manhole cover (5), the interior of the fixed cover (601) is hollowed out, and a plurality of rectangular slots (602) are provided around the exterior of the fixed cover (601), a movable block (603) is movably provided on the fixed cover (601), and the movable block (603) is provided inside the fixed cover (601) and is connected to a movable disk (604).

10. The energy-saving building water supply and drainage device with overflow prevention and impurity filtering functions according to claim 9, characterized in that: The corner ends of the movable disk (604) slide on the rectangular slot (602), and movable seats (605) are provided at the corner ends of the movable disk (604), and the movable seats (605) are movably connected to connecting rods (606). The other ends of several connecting rods (606) are movably connected to another movable seat (605) at the bottom of the sealing plate (607). The sealing plate (607) is rotatably connected to the inner side of the drainage hole (502) through a pin shaft (608) passed through one side, and the sealing plate (607) is adapted to the drainage hole (502).