Building water supply and drainage pipeline anti-blocking device
By installing filter cartridges and backwashing systems inside building water supply pipes, the problem of blockage caused by impurity accumulation is solved, achieving effective impurity filtration and cleaning, maintaining water flow in the pipes, and extending their service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DEZHOU KAIJIAN REAL ESTATE DEV CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-05-19
AI Technical Summary
Building water supply pipes can become clogged due to the accumulation of impurities during water transport, affecting their performance.
The filter cylinder uses an internally threaded connection, with a coarse and fine filter screen on the inner wall, and is coated with graphene. Combined with a ring water pipe and a backwash nozzle, it performs backwashing through a high-pressure water supply pipe to remove impurities.
It effectively filters impurities, prevents pipe blockage, keeps water flowing through the pipes, extends the service life of the filter screen, and improves the efficiency of pipe use.
Smart Images

Figure CN224252304U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building water supply and drainage technology, and in particular to a device for preventing blockage of building water supply and drainage pipes. Background Technology
[0002] A building water supply system is a cold water supply system that introduces water from the town's water supply network or a self-supplied water supply network into the building, and then delivers it to domestic, industrial, and fire-fighting water equipment through distribution pipes, meeting the water quantity, pressure, and quality requirements of each water point. The building water supply and drainage system actually includes two aspects: the building water supply system and the building drainage system. Water transmission pipes are often used in the building water supply system.
[0003] During the water supply process in buildings, impurities in the water can easily accumulate inside the pipes over a long period of time, causing blockages and reducing the effectiveness of the building water supply system. To address this issue, we propose an anti-blocking device for building water supply and drainage pipes. Utility Model Content
[0004] The purpose of this utility model is to provide a device for preventing blockage in building water supply and drainage pipes, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A device for preventing blockage in building water supply and drainage pipes includes a water supply and drainage pipe with internal threads on its inner wall. A filter cylinder is threaded onto the inner wall of the water supply and drainage pipe, and a coarse filter screen is connected to the inner wall of the filter cylinder. A fine filter screen is fixedly embedded on the outer surface of the filter cylinder. An annular groove is formed on the inner wall of the water supply and drainage pipe, and an annular water pipe is connected to the inner wall of the annular groove. A set of backwash nozzles is fixedly connected to the right side of each annular water pipe. The input end of the annular water pipe passes through the water supply and drainage pipe and is fixedly connected to a high-pressure water supply pipe. A control water valve and a pressure regulator are fixedly connected to the outer surface of the high-pressure water supply pipe. A sewage pipe is fixedly connected to the bottom surface of the water supply and drainage pipe, and a sewage valve is fixedly connected to the outer surface of the sewage pipe.
[0007] In a further embodiment, both the outer surface of the coarse filter and the outer surface of the fine filter are coated with a graphene coating.
[0008] In a further embodiment, a sealing gasket is fitted on the outer surface of the filter cartridge, and the outer surface of the sealing gasket is in contact with the inner wall of the water supply and drainage pipe.
[0009] In a further embodiment, a set of moving handles is connected to the inner wall of the filter cartridge, and a holding ball is connected to one end of each moving handle.
[0010] In a further embodiment, the right end of the water supply and drainage pipe is connected to a connecting flange, and a set of mounting holes are provided on the right side of the connecting flange.
[0011] In a further embodiment, a circular mounting groove is provided on the right side of the connecting flange, and a sealing ring is fitted into the inner wall of the circular mounting groove.
[0012] In a further embodiment, a model mark is provided on the front of the water supply and drainage pipe, and the model mark is located in the middle of the water supply and drainage pipe.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] This device, through its coarse and fine filter screens, graphene coating, internal threads, and filter cartridge, effectively filters out impurities of all sizes entering the water supply and drainage pipes. This prevents blockages by allowing a large amount of impurities to enter the pipes. The device also features a ring-shaped water pipe, backwash nozzles, a high-pressure water supply pipe, a control valve, and a pressure regulating valve. The control valve opens to supply water to the ring-shaped pipe, and the backwash nozzles spray water to backwash the filter cartridge, effectively removing impurities adhering to it. This facilitates effective filtration of the water and prevents blockages in the water supply and drainage pipes. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the anti-clogging device for building water supply and drainage pipes.
[0016] Figure 2 This is a side view of the connecting flange in the anti-clogging device for building water supply and drainage pipes.
[0017] Figure 3 This is a schematic diagram of the internal cross-sectional structure of the water supply and drainage pipe in the anti-clogging device for building water supply and drainage pipes.
[0018] Figure 4 This is a side sectional view of the water supply and drainage pipe in the anti-clogging device for building water supply and drainage pipes.
[0019] Figure 5 This is a schematic diagram of the internal cross-sectional structure of the filter cartridge in a building water supply and drainage pipe anti-clogging device.
[0020] In the diagram: 1. Water supply and drainage pipe; 2. Model designation; 3. Sewage pipe; 31. Sewage valve; 4. Connecting flange; 41. Mounting hole; 5. Annular water pipe; 6. High-pressure water supply pipe; 7. Control water valve; 8. Pressure regulator; 9. Internal thread; 10. Filter cylinder; 11. Circular mounting groove; 111. Sealing ring; 12. Annular groove; 13. Handle; 131. Holding ball; 14. Coarse filter screen; 15. Fine filter screen; 16. Backwash nozzle; 17. Sealing gasket. Detailed Implementation
[0021] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of 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.
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figure 1-5In this utility model, a building water supply and drainage pipe anti-clogging device includes a water supply and drainage pipe 1. The inner wall of the water supply and drainage pipe 1 is provided with an internal thread 9. A filter cylinder 10 is threadedly connected to the inner wall of the water supply and drainage pipe 1. A coarse filter screen 14 is connected to the inner wall of the filter cylinder 10. A fine filter screen 15 is fixedly embedded on the outer surface of the filter cylinder 10. An annular groove 12 is provided on the inner wall of the water supply and drainage pipe 1. An annular water pipe 5 is connected to the inner wall of the annular groove 12. A set of backwash nozzles 16 is fixedly connected to the right side of each annular water pipe 5. The input end of the annular water pipe 5 passes through the water supply and drainage pipe 1 and is fixedly connected to a high-pressure water supply pipe 6. A control water valve 7 and a pressure regulator 8 are fixedly connected to the outer surface of the high-pressure water supply pipe 6. A sewage pipe 3 is fixedly connected to the bottom surface of the water supply and drainage pipe 1. A sewage valve 31 is fixedly connected to the outer surface of the sewage pipe 3.
[0025] The outer surfaces of the coarse filter screen 14 and the fine filter screen 15 are coated with graphene coating, which can reduce the adhesion of the filter screen surface and extend its service life. The outer surface of the filter cylinder 10 is fitted with a sealing gasket 17, and the outer surface of the sealing gasket 17 is in contact with the inner wall of the water supply and drainage pipe 1, which can increase the sealing of the filter cylinder 10 during installation. A set of moving handles 13 are connected to the inner wall of the filter cylinder 10, and one end of each moving handle 13 is connected to a holding ball 131, which can easily rotate the filter cylinder 10 and facilitate the installation of the filter cylinder 10.
[0026] The right end of the water supply and drainage pipe 1 is connected to a connecting flange 4. A set of mounting holes 41 are opened on the right side of the connecting flange 4 to facilitate the external installation of the water supply and drainage pipe 1. A circular mounting groove 11 is opened on the right side of the connecting flange 4. A sealing rubber ring 111 is snapped into the inner wall of the circular mounting groove 11 to achieve the connection and sealing of the water supply and drainage pipe 1. A model mark 2 is opened on the front of the water supply and drainage pipe 1. The model mark 2 is located in the middle of the water supply and drainage pipe 1 to indicate the model of the drainage pipe and facilitate the use of the installer.
[0027] The working principle of this utility model is as follows:
[0028] In use, first insert the filter cartridge 10 into the water supply and drainage pipe 1, and then screw the filter cartridge 10 into the water supply and drainage pipe 1 by rotating the handle 13. Then, connect and install the water supply and drainage pipe 1 through the connecting flange 4 and the mounting hole 41. At the same time, use the sealing ring 111 to achieve a sealed connection of the water supply and drainage pipe 1. During use, use the coarse filter screen 14 and the fine filter screen 15 to filter coarse and fine impurities in the water to prevent impurities from entering the water supply and drainage pipe 1 and avoid blockage. At the same time, periodically open the control water valve 7 to allow the cleaning water inside the high-pressure water supply pipe 6 to enter the annular water pipe 5. After being sprayed out at high speed through the backwash nozzle 16, the filter cartridge 10 is rinsed and cleaned to keep the filter cartridge 10 clean and achieve effective filtration of impurities in the water, thus maintaining the effective water flow of the water supply and drainage pipe 1.
[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A device for preventing blockage in building water supply and drainage pipes, characterized in that: The system includes a water supply and drainage pipe (1), the inner wall of which is provided with an internal thread (9), a filter cylinder (10) is threadedly connected to the inner wall of the water supply and drainage pipe (1), a coarse filter screen (14) is connected to the inner wall of the filter cylinder (10), a fine filter screen (15) is fixedly embedded on the outer surface of the filter cylinder (10), an annular groove (12) is provided on the inner wall of the water supply and drainage pipe (1), an annular water pipe (5) is connected to the inner wall of the annular groove (12), a set of backwash nozzles (16) is fixedly connected to the right side of each annular water pipe (5), the input end of the annular water pipe (5) passes through the water supply and drainage pipe (1) and is fixedly connected to a high-pressure water supply pipe (6), a control water valve (7) and a pressure regulator (8) are fixedly connected to the outer surface of the high-pressure water supply pipe (6), a sewage pipe (3) is fixedly connected to the bottom surface of the water supply and drainage pipe (1), and a sewage valve (31) is fixedly connected to the outer surface of the sewage pipe (3).
2. The building water supply and drainage pipeline anti-blocking device according to claim 1, characterized in that: The outer surfaces of both the coarse filter (14) and the fine filter (15) are coated with graphene.
3. The building water supply and drainage pipeline anti-blocking device according to claim 1, characterized in that: The outer surface of the filter cylinder (10) is fitted with a sealing gasket (17), and the outer surface of the sealing gasket (17) is in contact with the inner wall of the water supply and drainage pipe (1).
4. The building water supply and drainage pipeline anti-blocking device according to claim 1, characterized in that: The inner wall of the filter cylinder (10) is connected to a set of moving handles (13), and one end of each moving handle (13) is connected to a holding ball (131).
5. The building water supply and drainage pipeline anti-blocking device according to claim 1, characterized in that: The right end of the water supply and drainage pipe (1) is connected to a connecting flange (4), and a set of mounting holes (41) are provided on the right side of the connecting flange (4).
6. The anti-clogging device for building water supply and drainage pipes according to claim 5, characterized in that: A circular mounting groove (11) is provided on the right side of the connecting flange (4), and a sealing ring (111) is fitted into the inner wall of the circular mounting groove (11).
7. The building water supply and drainage pipeline anti-blocking device according to claim 1, characterized in that: The water supply and drainage pipe (1) has a model mark (2) on its front side, and the model mark (2) is located in the middle of the water supply and drainage pipe (1).