A riser backflow prevention monitoring system
By combining non-contact sensors and controllers, the problem of backflow after riser blockage is solved, enabling real-time monitoring and early warning, ensuring the system operates normally during power outages, and reducing health and economic losses.
Patent Information
- Application Number
- CN202522518476.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-27
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-11-27
AI Technical Summary
Clogged risers can easily cause backflow, leading to the presence of pathogens indoors and economic losses. Furthermore, current technology lacks effective monitoring and early warning methods.
The system uses a non-contact sensor to detect the water level in the riser. Combined with a controller and backup power supply, it monitors riser blockage in real time and issues an alarm. A backup riser is provided to prevent backflow. The installation structure facilitates sensor installation and signal transmission.
It enables real-time monitoring and early warning of riser blockage, prevents backflow, reduces health risks and economic losses, and features convenient sensor installation, reliable signal transmission, and backup power to ensure normal operation of the system in the event of a power outage.
Smart Images

Figure CN224944626U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drainage monitoring technology, and in particular to a riser backflow prevention monitoring system. Background Technology
[0002] Household water, such as water from the kitchen and bathroom, is drained through horizontal pipes to vertical pipes, and then discharged downwards through the vertical pipes. Kitchen water often contains food scraps, and bathroom water often contains pathogens. If the vertical pipes are blocked and not cleared in time, backflow can easily occur, leading to a large number of pathogens indoors. At the same time, excrement and other waste can cause significant economic losses to residents. Sewage can soak floors and walls, and if residents are not home, it can slowly seep into gaps, leaving behind severe odors and mold, seriously affecting daily life and continuously posing a threat to health. Therefore, developing a backflow prevention monitoring system for building drainage is crucial. Utility Model Content
[0003] To address the shortcomings of existing riser systems that are prone to backflow after blockage, this invention proposes a riser backflow prevention monitoring system that issues an alarm when the riser is blocked to prevent backflow.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: A riser backflow prevention monitoring system is characterized by comprising a detection mechanism and a riser, the upper end of which is connected to domestic water. The detection mechanism includes a non-contact sensor, wires, and a controller. The non-contact sensor is attached to the outer side of the upper end of the riser. When the water level in the riser reaches the upper end, it can be detected by the non-contact sensor. The controller is connected to an external and / or internal power supply and is connected to the non-contact sensor through wires for transmitting and receiving detection data to alert the terminal to blockage.
[0005] Furthermore, the monitoring system also includes an installation structure, which includes a sleeve and a plug. The sleeve is fitted onto the upper end of the riser, and one side of the sleeve protrudes outward to form a limiting groove with an open upper end and a closed lower end. The limiting groove is adapted to a non-contact sensor, which is installed in the limiting groove. An avoidance groove is provided on the side of the limiting groove, through which the wire passes. The plug is embedded in the upper end of the limiting groove.
[0006] Furthermore, the lower ends of both the clearance groove and the block are rounded.
[0007] Furthermore, the inner side of the block abuts against the riser.
[0008] Furthermore, an adhesive layer is provided between the sleeve and the riser.
[0009] Furthermore, the riser is installed in the wall, and an access port is provided on the side of the wall. The controller is located outside the access port, and the wires pass through the access port.
[0010] Furthermore, the controller includes a controller body, a housing, and a cover plate. The controller body is installed in the housing, and wires pass through the housing and are connected to the controller body. The controller body is connected to an external power source, and a backup battery is installed in the housing. The cover plate is detachably connected to the housing.
[0011] Furthermore, a fixing post is fixedly connected inside the housing, and mounting holes are provided on the cover plate. Fasteners pass through the mounting holes and are threadedly connected to the fixing post.
[0012] Furthermore, the monitoring system also includes a bottom connector, a horizontal pipe, and a backup riser. The bottom connector includes a first riser section, a second riser section, and a connecting pipe section. One side of the first riser section is provided with a side socket. One end of the horizontal pipe is connected to the domestic drainage equipment, and the other end of the horizontal pipe is inclined downwards and connected to the side socket. The upper and lower ends of the first riser section are respectively provided with a first upper socket and a first lower socket. The upper end of the riser is inserted into the first lower socket. One end of the connecting pipe section is connected to the middle of the first riser section, and the other end of the connecting pipe section is inclined upwards and connected to the middle of the second riser section. The lower edge of the upper end of the connecting pipe section is basically flush with the lower edge of the lower end of the horizontal pipe. The upper and lower ends of the second riser section are respectively provided with a second upper socket and a second lower socket. The second lower socket is connected to the backup riser.
[0013] Through the above improvements, the monitoring system of this utility model has the following beneficial effects: 1. It can monitor whether the riser is blocked to prevent backflow; 2. After a power outage, the backup battery can be activated to allow the monitoring system to operate normally; 3. Facilitates the installation of non-contact sensors on the outside of the riser; 4. Improved controller signal quality ensures that detection data and alarm signals are sent to the terminal in a timely manner; 5. The water level is detected by a non-contact sensor, which eliminates the need for drilling holes in the riser, reducing leakage and facilitating the replacement and maintenance of the non-contact sensor; 6. Install a backup riser to further prevent backflow. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the monitoring system used in an embodiment.
[0015] Figure 2 A perspective view of the monitoring system used in this embodiment.
[0016] Figure 3 for Figure 2 Enlarged view of point A.
[0017] Figure 4This is a schematic diagram of the controller used in an embodiment.
[0018] Figure 5 This is a perspective view of the controller in an embodiment.
[0019] Figure 6 This is a cross-sectional view of the controller in an embodiment.
[0020] Figure 7 This is a schematic diagram of the installation structure for an embodiment.
[0021] Figure 8 This is a cross-sectional view of the installation structure in an embodiment.
[0022] Figure 9 Another schematic diagram of the installation structure for this embodiment.
[0023] Figure 10 This is a cross-sectional view of the five-way connector in an embodiment. Detailed Implementation
[0024] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.
[0025] like Figures 1 to 10This utility model proposes a riser backflow prevention monitoring system for building drainage, such as drainage in residential homes and office buildings. The monitoring system includes a detection mechanism and a riser 3. The riser 3 is vertically fixed in the building. In a building, multiple risers 3 are often vertically connected to meet the needs of multi-level drainage. In this embodiment, the riser 3 responsible for the drainage of one floor is used as an example. The upper end of the riser 3 is connected to domestic water, including but not limited to toilet water, kitchen water, and floor drain 5. Specifically, toilets 4 and urinals in the toilet discharge toilet water, floor drains 5 drains water from the ground, and sinks 6 in the kitchen discharge kitchen water. The above domestic water is collected and discharged into the upper end of the riser 3, and then discharged downwards into the municipal drainage pipe through the riser 3. The detection mechanism includes a non-contact sensor 7, a wire 8, and a control... The controller 9 and the non-contact sensor 7 can be capacitive sensors, ultrasonic sensors, radar level gauges, or other non-contact sensors. In this embodiment, the non-contact sensor 7 is specifically a radar level gauge. The non-contact sensor 7 is attached to the outer side of the upper end of the riser 3. When the water level in the riser 3 reaches the upper end of the riser 3, it can be detected by the non-contact sensor 7. The controller 9 is powered by an external power supply and / or an internal power supply. That is, the controller 9 can be powered by an external power supply, an internal power supply, or a combination of both. The controller 9 is connected to the non-contact sensor 7 through a wire 8 to transmit and receive detection data to alert the terminal to blockage. The controller 9 is installed on the exterior of the wall to allow for external power supply. At the same time, the signal is better on the exterior of the wall, making it easier to send the detection data to the property management backend, the owner's mobile phone, or other terminals.
[0026] The monitoring system works as follows: the non-contact sensor 7 detects the water flow in the riser pipe 3 every 30 seconds, 40 seconds, or other time intervals. When the riser pipe 3 is not blocked, domestic water is discharged downward through the riser pipe 3, and the water flows quickly past the non-contact sensor 7. The non-contact sensor 7 is not triggered. When the riser pipe 3 is blocked, the water level in the riser pipe 3 rises to the non-contact sensor 7. The non-contact sensor 7 sends the detection data to the controller 9 through the wire 8. The controller 9 sends the data to the terminal through Wi-Fi, 4G, or other wireless signals to remind the user that the riser pipe 3 is blocked and needs to be cleared in time to prevent backflow caused by continued discharge of domestic water.
[0027] In one embodiment, such as Figure 3 , Figure 7 , Figure 8 and Figure 9The monitoring system also includes an installation structure, which includes a sleeve 10 and a plug 11. The sleeve 10 is fitted onto the upper end of the riser 3. One side of the sleeve 10 protrudes outward to form a limiting groove 12 with an open upper end and a closed lower end. The limiting groove 12 is adapted to the non-contact sensor 7, which is installed in the limiting groove 12. A clearance groove 13 is provided on the side of the limiting groove 12. The upper end of the clearance groove 13 extends through to the upper end of the limiting groove 12 to facilitate the insertion of the wire 8. The wire 8 passes through the clearance groove 13. The plug 11 is embedded in the upper end of the limiting groove 12 to prevent the non-contact sensor 7 from coming out of the limiting groove 12.
[0028] In one embodiment, such as Figure 8 The lower end of the clearance groove 13 and the lower end of the block 11 are both provided with rounded corners 14 to prevent the block 11 or clearance groove 13 from scratching the wire 8.
[0029] In one embodiment, the block 11 is made of rubber, and the inner side of the block 11 abuts against the riser 3 to prevent the block 11 from easily coming out of the upper end of the limiting groove 12.
[0030] In one embodiment, an adhesive layer is provided between the sleeve 10 and the riser 3 to fix the sleeve 10 to the riser 3.
[0031] In one embodiment, such as Figure 1 The riser 3 is installed in the wall and is hidden to improve aesthetics. An inspection port is provided on the side of the wall (not shown in the figure). The controller 9 is installed outside the inspection port. The wire 8 passes through the inspection port. The controller 9 is installed on the exterior of the wall to improve signal strength.
[0032] In one embodiment, such as Figures 4 to 6 The controller 9 includes a controller body 15, a housing 16, and a cover plate 17. The housing 16 is fixed to the exterior of the wall by screws or other connectors. The controller body 15 is installed in the housing 16. The controller body 15 includes a microcontroller and a wireless module. The microcontroller is used to process detection data and control the operation of the monitoring system. The wireless module is used to send detection data and alarm signals. Since the controller body 15 is not the focus of this utility model, it will not be described in detail here. The wire 8 passes through the housing 16 and connects to the controller body 15. The controller body 15 is connected to an external power supply. A backup battery 18 is installed in the housing 16. Under normal circumstances, the detection system is powered by the external power grid, and the backup battery 18 does not provide power. When there is a power outage, the backup battery 18 starts to provide power. When the power grid is restored, the detection system is powered by the external power grid again, and at the same time, the backup battery 18 is charged for the next use. The cover plate 17 is detachably connected to the housing 16.
[0033] In one embodiment, such as Figure 6A fixing post 19 is fixedly connected inside the housing 16. The cover plate 17 is provided with a mounting hole 20. Fasteners (not shown in the figure) pass through the mounting hole 20 and are threadedly connected to the fixing post 19, thereby locking the cover plate 17 onto the housing 16.
[0034] In one embodiment, such as Figure 2 and Figure 10 The monitoring system also includes a bottom connector, a horizontal pipe 21, and a spare riser 22. The bottom connector includes a first riser section 23, a second riser section 24, and a connecting pipe section 25. A side socket 26 is provided on one side of the first riser section 23. One end of the horizontal pipe 21 is connected to the domestic drainage equipment, which includes the aforementioned floor drain 5, toilet 4, sink 6, and other components. The other end of the horizontal pipe 21 is inclined downwards and connected to the side socket 26. The first upper socket 27 and the first lower socket 28 are respectively provided at the upper and lower ends of the first riser section 23. The upper end of the riser 3 is inserted into the first lower socket 28. The first upper socket 27 can be connected to the riser 3 of the upper floor for convenient inter-floor drainage. One end of the connecting pipe 25 is connected to the middle of the first vertical pipe 23, and the other end of the connecting pipe 25 is inclined upward and connected to the middle of the second vertical pipe 24. The lower edge of the upper end of the connecting pipe 25 is basically flush with the lower edge of the lower end of the horizontal pipe 21. The upper and lower ends of the second vertical pipe 24 are respectively provided with a second upper socket 29 and a second lower socket 30. The second lower socket 30 is connected to the spare riser 22, and the second upper socket 29 can be connected to the spare riser 22 of the upper floor for convenient inter-floor drainage.
[0035] During normal drainage, the domestic drainage equipment enters the first vertical pipe section 23 through the horizontal pipe 21 and the side socket 26, and then discharges water into the riser pipe 3 through the first lower socket 28. The water flow will not enter the second vertical pipe section 24 through the connecting pipe section 25. At this time, the water is drained through the riser pipe 3. When the riser pipe 3 is blocked, the water level in the riser pipe 3 rises and overflows the connecting pipe section 25. The water flows downward through the connecting pipe section 25 and the second lower socket 30. At this time, the water is drained through the spare riser pipe 22 to prevent the water level from continuing to rise and causing backflow.
[0036] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.
Claims
1. A standpipe backflow prevention monitoring system, characterized by, The device includes a detection mechanism and a riser. The upper end of the riser is connected to domestic water. The detection mechanism includes a non-contact sensor, wires, and a controller. The non-contact sensor is attached to the outer side of the upper end of the riser. When the water level in the riser reaches the upper end, it can be detected by the non-contact sensor. The controller is connected to an external and / or internal power supply and is connected to the non-contact sensor through wires to transmit and receive detection data to alert the terminal to blockage.
2. A standpipe backflow prevention monitoring system according to claim 1, wherein, The monitoring system also includes an installation structure, which includes a sleeve and a plug. The sleeve is fitted onto the upper end of the riser. One side of the sleeve protrudes outward to form a limiting groove that is open at the top and closed at the bottom. The limiting groove is adapted to a non-contact sensor, which is installed in the limiting groove. An avoidance groove is provided on the side of the limiting groove, through which the wire passes. The plug is embedded in the upper end of the limiting groove.
3. The riser backflow prevention monitoring system according to claim 2, characterized in that, The lower end of the clearance groove and the lower end of the block are both provided with rounded corners.
4. The riser backflow prevention monitoring system according to claim 2, characterized in that, The inner side of the block abuts against the riser.
5. A riser backflow prevention monitoring system according to claim 2, characterized in that, An adhesive layer is provided between the sleeve and the riser.
6. The riser backflow prevention monitoring system according to claim 1, characterized in that, The riser is installed in the wall, and an inspection port is provided on the side of the wall. The controller is located outside the inspection port, and the wire passes through the inspection port.
7. A riser backflow prevention monitoring system according to claim 6, characterized in that, The controller includes a controller body, a housing, and a cover plate. The controller body is installed in the housing. The wire passes through the housing and is connected to the controller body. The controller body is connected to an external power source. A backup battery is installed in the housing. The cover plate is detachably connected to the housing.
8. A riser backflow prevention monitoring system according to claim 7, characterized in that, A fixing post is fixedly connected inside the housing, and a mounting hole is provided on the cover plate. Fasteners pass through the mounting hole and are threadedly connected to the fixing post.
9. A riser backflow prevention monitoring system according to claim 1, characterized in that, The monitoring system also includes a five-way connector, a horizontal pipe, and a spare riser. The five-way connector includes a first riser section, a second riser section, and a connecting pipe section. A side socket is provided on one side of the first riser section. One end of the horizontal pipe is connected to the domestic drainage equipment, and the other end of the horizontal pipe is inclined downwards and connected to the side socket. The upper and lower ends of the first riser section are respectively provided with a first upper socket and a first lower socket. The upper end of the riser is inserted into the first lower socket. One end of the connecting pipe section is connected to the middle of the first riser section, and the other end of the connecting pipe section is inclined upwards and connected to the middle of the second riser section. The lower edge of the upper end of the connecting pipe section is basically flush with the lower edge of the lower end of the horizontal pipe. The upper and lower ends of the second riser section are respectively provided with a second upper socket and a second lower socket. The second lower socket is connected to the spare riser.
