Pipeline system for preventing overflow of upper-layer residents caused by blockage of drainage transverse pipe

Abstract

The utility model relates to the field of buildings, in particular to a water supply and drainage technology. A pipeline system for preventing overflow of upper-layer residents caused by blockage of a drainage transverse pipe comprises a vertically-arranged sewer pipe and a transversely-arranged transverse pipe, the sewer pipe is communicated with the transverse pipe, a one-way valve device is arranged at the joint of the sewer pipe and the transverse pipe, and the one-way valve device comprises a square channel with a square cross section and serves as a valve body cavity; a ring body is horizontally arranged on the inner wall of the valve body cavity, and the ring body and the valve body cavity are integrally formed; a rotating shaft is arranged at the lower end of the ring body and is connected with a valve plate; the valve plate is made of magnetic metal, the shape of the valve plate is matched with a center hole of the shielding ring body, a closed state that the valve plate is attached to the lower end of the ring body is formed, and a water storage cavity is formed in the portion, above the valve plate, of the sewer pipe in the closed state; sewage and waste water are discharged into the transverse pipe after being stored to a certain height through the water storage cavity, so that deposits in the transverse pipe are flushed by means of water flow potential energy, and the waste water is prevented from overflowing due to blockage of the transverse pipe.

Description

Technical Field

[0001] The utility model relates to the field of construction, in particular to water supply and drainage technology. Background Art

[0002] When one floor of a high-rise residential building is elevated, a horizontal pipe is installed at the top of the elevated floor. Sewage pipes and wastewater pipes are connected to the horizontal pipe, and the sewage and wastewater vertical pipes are transferred to the exterior wall of the building for easy installation outside the house.

[0003] Due to the long length of the horizontal pipe, the flow rate of the drainage water in the horizontal pipe is reduced, and impurities such as mud, sand and hair in the water flow will settle in the horizontal pipe. Over time, the sediment in the horizontal pipe will accumulate, blocking the pipe and affecting sewer discharge. When the blockage is serious, the sewage and wastewater in the sewer pipe will overflow to the residents on the upper floors. Utility Model Content

[0004] The purpose of the present utility model is to provide a piping system that prevents blockage of drainage transverse pipes and causes overflow of water to upper-floor residents, so as to solve at least one of the above-mentioned technical problems.

[0005] The technical problem solved by the present invention can be achieved by adopting the following technical solutions:

[0006] A piping system for preventing blockage of a drainage horizontal pipe, which may cause overflowing of water from upper-floor households, comprises a vertically arranged downpipe and a horizontally arranged horizontal pipe, the horizontal pipe having a closed end, the downpipe being connected to the horizontal pipe, and further comprising a one-way valve device;

[0007] The one-way valve device includes a square channel with a square cross section as a valve body cavity;

[0008] An upper interface adapted to the diameter of the sewer pipe is provided at the upper end of the valve body cavity, and the upper interface is connected to the sewer pipe;

[0009] The lower end of the valve body cavity is provided with a lower interface adapted to the diameter of the horizontal pipe, and the lower interface is connected to the horizontal pipe;

[0010] A ring body is horizontally arranged along the inner wall of the valve body cavity. The ring body and the valve body cavity are integrally formed. The area of the center hole of the ring body is 1 to 1.2 times the area of the sewer pipe.

[0011] A rotating shaft is provided at the lower end of the ring body, and the rotating shaft is connected to a valve plate;

[0012] The valve disc is made of magnetic metal and has a shape that fits the center hole of the shielding ring body;

[0013] The valve disc is linked to an elastic reset mechanism that drives the valve disc to reset and close, and the elastic reset mechanism uses a torsion spring as a reset mechanism;

[0014] When the valve disc is reset to the closed state, the valve disc is attached to the lower end of the ring body, forming a water storage cavity in the downpipe above the valve disc;

[0015] A magnetic component is provided at the lower end of the ring body on the other side away from the rotating shaft. The magnetic component is embedded in the ring body, and the surface of the magnetic component is flush with the lower end surface of the ring body.

[0016] When the valve disc is in a closed state, the magnetic component is magnetically coupled to the valve disc;

[0017] The magnetic coupling attraction between the magnet component and the valve plate is selected in accordance with the following conditions:

[0018] The magnetic coupling suction force is greater than the pressure on the valve disc before the water storage chamber is filled with water to a height of 0.15 to 0.25 m;

[0019] The magnetic coupling suction force is smaller than the pressure that the valve plate bears after the water storage chamber is filled with water to a height of 0.25 to 0.3 m.

[0020] In the above design, a one-way valve is installed at the connection between the sewer pipe and the cross pipe. The valve disc of the one-way valve device allows water to flow from the sewer pipe to the cross pipe, but not in the opposite direction. The one-way valve device can be made of one of the following materials: UPVC, PE, or flexible ductile iron. The valve disc is made of magnetic metal and fits under the center hole of the ring body, thus forming a temporary water storage chamber in the sewer pipe above the valve disc. One side of the valve disc is connected to the rotating shaft and can be flipped downward along with the rotating shaft; the other side of the valve disc is connected to the magnet in the ring body above it through magnetic coupling attraction. When the water level in the water storage chamber reaches a height of 0.25 to 0.3 meters, the pressure of the weight of the stored water on the valve plate exceeds the magnetic coupling attraction between the valve plate and the magnet, so the valve plate and the magnet separate and flip, releasing the stored water into the horizontal pipe at one time. The beneficial effect is that the sewage and wastewater are accumulated and released at one time, and the potential energy of the stored water can be used to flush the silt in the horizontal pipe, preventing the silt from accumulating in the horizontal pipe and causing blockage, thereby causing sewage and wastewater to overflow into the homes of high-rise residents.

[0021] In this design, a torsion spring is mounted on the rotating shaft as an elastic reset mechanism to drive the valve disc back to its original position. One end of the torsion spring abuts against the lower end of the ring body, while the other end is positioned below the valve disc. When the water pressure in the reservoir exceeds the magnetic coupling attraction between the valve disc and the magnet, the valve disc flips downward, compressing the torsion spring and accumulating force. When the water in the water storage chamber is empty, the valve disc returns to its original position under the rebound force of the torsion spring, reengaging with the magnet and resuming the water storage state.

[0022] Furthermore, an annular groove is provided at the lower end of the ring body, and an O-type sealing ring is provided in the annular groove; the sealing ring is a nitrile rubber sealing ring.

[0023] In this design, an annular groove is provided at the lower end of the ring body, and an O-ring is installed in the annular groove. This has the beneficial effect of preventing the water storage chamber from leaking at the valve plate. If the valve plate leaks, the water storage chamber will not be able to complete its function of storing water and thus cannot use the stored water to flush the sediment in the horizontal pipe.

[0024] In the above design, the beneficial effect of using a nitrile rubber sealing ring is that the nitrile rubber sealing ring is resistant to corrosion, tearing and compression deformation, and can form a watertight water storage chamber when combined with the valve plate. In addition, the nitrile rubber sealing ring has the lowest cost, thereby reducing manufacturing costs.

[0025] Furthermore, it also includes a water level detection and warning system, which includes a water level detection switch and a sounding device;

[0026] The water level detection switch is installed in the sewer pipe at a height of 0.3 to 0.35m above the one-way valve device;

[0027] The water level detection switch signal is connected to the start switch of the sounding device.

[0028] In this design, a water level detection switch is installed in the sewer pipe to detect whether backflow is about to occur. The water level detection switch is set at the overflow warning level. When the water level exceeds the warning level, the switch closes, driving the sounding device to sound an alarm. This allows measures to be taken to clear the horizontal pipe before backflow occurs, releasing the backflow wastewater in the sewer pipe. This has the beneficial effect of improving the living satisfaction of high-rise residents.

[0029] Furthermore, the water level detection switch adopts a float type water level sensor.

[0030] In the above design, the float type water level sensor has a simple structure, high reliability and low cost, and its beneficial effect is that it can reduce manufacturing costs.

[0031] Furthermore, an air pump is included, and the air outlet of the air pump is connected to the closed end of the horizontal pipe.

[0032] In the above design, when the horizontal pipe is severely clogged and flushing with water in the reservoir is ineffective, pressurizing the horizontal pipe is necessary to clear the blockage with air pressure. Because a one-way valve is installed in the sewer pipe, when pressurizing the horizontal pipe, the air pressure does not act on the sewer pipe. Therefore, using an air pump will not exacerbate backflow, but only act on the horizontal pipe.

[0033] Furthermore, it includes a water level detection switch and an air pump;

[0034] The water level detection switch is installed in the sewer pipe at a height of 0.3 to 0.35m above the one-way valve device;

[0035] The air outlet of the air pump is connected to the closed end of the horizontal pipe;

[0036] The water level detection switch serves as the start switch of the air pump.

[0037] In the above design, a water level detection switch is set in the sewer pipe, and the water level of the sewage will trigger the water level detection switch when overflowing, thereby controlling the start of the air pump to pressurize and dredge the horizontal pipe. The beneficial effect is that the silt in the horizontal pipe can be cleaned before overflow occurs, thereby improving the quality of life of high-rise residents.

[0038] Furthermore, the air pump adopts a diaphragm air pump with a flow rate of 10 to 20L.

[0039] In the above design, the air pump adopts a diaphragm air pump, which has the beneficial effect of being silent and improving the quality of life of high-rise residents; the flow rate of the air pump is selected in the specification of 10 to 20L, which has the beneficial effect of being sufficient and reducing manufacturing costs.

[0040] The utility model provides a one-way valve device at a place where the sewer pipe is adjacent to the horizontal pipe. The one-way valve device is configured so that the water pressure can only open the one-way valve when the water level in the sewer pipe reaches a height of 0.25 to 0.3 meters. Therefore, each time the one-way valve releases sewage and wastewater, there is enough water to flush the horizontal pipe. The beneficial effect is that sewage and wastewater are released at one time after accumulation, and the potential energy of the stored water can be used to flush the silt in the horizontal pipe, thereby preventing the silt from accumulating in the horizontal pipe to cause clogging, thereby causing sewage and wastewater to overflow into the homes of high-rise residents.

[0041] This utility model installs a water level detection switch in the sewer pipe to detect whether backflow is about to occur. The water level detection switch is set at the warning level of the backflow water level. When the water level exceeds the warning level, the switch closes, driving the sounding device to emit an alarm sound, so that measures can be taken to clear the horizontal pipe before backflow occurs, releasing the backflow wastewater in the sewer pipe. The beneficial effect is that it can improve the living satisfaction of high-rise residents.

[0042] Furthermore, the utility model is also provided with a water level detection system to detect the water level in the sewer pipe, and then before overflow is about to occur, the air pump is controlled to start up to pressurize and desilt the horizontal pipe. The beneficial effect is that the silt in the horizontal pipe can be cleaned before overflow occurs, thereby improving the quality of life of high-rise residents. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0044] Figure 1 It is a schematic diagram of the utility model;

[0045] Figure 2 This is a schematic diagram of the connection of the water level switch, sounding device, and air pump in the utility model;

[0046] Figure 3 It is a schematic diagram of a one-way valve device.

[0047] Explanation of symbols:

[0048] 1. Horizontal pipe; 2. Drain pipe; 3. One-way valve device; 4. Water storage chamber; 5. Sounding device; 6. Water level detection switch; 7. Air pump; 31. Valve plate; 32. Ring body; 33. Rotating shaft; 34. Elastic reset mechanism; 35. Magnet; 36. O-ring; 37. Upper interface; 38. Lower interface. DETAILED DESCRIPTION

[0049] In order to make the above-mentioned objects, features and advantages of the present invention more understandable, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0050] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0051] Next, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, cross-sectional views of device structures may be partially enlarged and not to scale when describing embodiments of the present invention. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0052] Furthermore, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it designate a separate or selective embodiment that is mutually exclusive with other embodiments.

[0053] Reference Figure 1 、 Figure 2 As shown, the piping system for preventing the blockage of the drainage horizontal pipe and the overflow of the upper residents includes a vertically arranged downpipe 2 and a horizontally arranged horizontal pipe 1. The horizontal pipe 1 has a closed end. The downpipe 2 is connected to the horizontal pipe 1 and also includes a one-way valve device 3.

[0054] The one-way valve device 3 includes a square channel with a square cross section, which serves as a valve body cavity;

[0055] The upper end of the valve body cavity is provided with an upper interface 37 adapted to the diameter of the sewer pipe 2, and the upper interface 37 is connected to the sewer pipe 2;

[0056] The lower end of the valve body cavity is provided with a lower interface 38 adapted to the diameter of the horizontal pipe 1, and the lower interface 38 is connected to the horizontal pipe 1;

[0057] A ring body 32 is horizontally arranged along the inner wall of the valve body cavity. The ring body 32 and the valve body cavity are integrally formed. The area of the center hole of the ring body 32 is 1 to 1.2 times the area of the sewer pipe 2.

[0058] A rotating shaft 33 is provided at the lower end of the ring body 32, and the rotating shaft 33 is connected to a valve plate 31;

[0059] The valve disc 31 is made of magnetic metal and has a shape that fits the center hole of the shielding ring 32;

[0060] The valve disc 31 is linked to an elastic reset mechanism 34 that drives the valve disc 31 to reset and close. The elastic reset mechanism 34 uses a torsion spring as a reset mechanism.

[0061] When the valve disc 31 is reset to the closed state, the valve disc 31 is attached to the lower end of the ring body 32, forming a water storage chamber 4 in the downpipe 2 above the valve disc 31;

[0062] A magnet 35 is provided at the lower end of the ring body 32 on the other side away from the rotating shaft 33. The magnet 35 is embedded in the ring body 32, and the surface of the magnet 35 is flush with the lower end surface of the ring body 32.

[0063] When the valve disc 31 is in the closed state, the magnet 35 is magnetically coupled to the valve disc 31;

[0064] The magnetic coupling attraction between the magnet 35 and the valve plate 31 is selected to meet the following conditions:

[0065] The magnetic coupling suction force is greater than the pressure on the valve plate 31 before the water storage chamber 4 is filled with water to a height of 0.15 to 0.25 m;

[0066] The magnetic coupling suction force is smaller than the pressure on the valve plate 31 after the water storage chamber 4 is filled with water to a height of 0.25 to 0.3 m.

[0067] In this embodiment, a one-way valve device 3 is provided at the location where the sewer pipe 2 is connected to the transverse pipe 1. The valve disc 31 of the one-way valve device 3 allows water to flow from the sewer pipe 2 to the transverse pipe 1, but does not allow water to flow in the opposite direction. The material of the one-way valve device 3 can be UPVC, PE, or flexible ductile iron. The valve disc 31 is made of a magnetic metal, such as austenitic stainless steel, martensitic stainless steel, or ferritic stainless steel, and is attached to the lower end of the center hole of the ring body 32. Thus, a temporary water storage chamber 4 is formed in the sewer pipe 2 above the valve disc 31. One side of the valve disc 31 is connected to the rotating shaft 33 and can be flipped downward together with the rotating shaft 33; the other side of the valve disc 31 is connected to the magnet 35 in the ring body 32 above it through magnetic coupling suction. When the water level in the water storage chamber 4 reaches a height of 0.25 to 0.3 meters, the pressure of the weight of the stored water on the valve plate 31 exceeds the magnetic coupling attraction between the valve plate 31 and the magnet 35, so the valve plate 31 and the magnet 35 are separated and flipped, and the stored water is released into the horizontal pipe 1 at one time. The beneficial effect is that the sewage and wastewater are accumulated and released at one time, and the potential energy of the stored water can be used to flush the silt in the horizontal pipe 1, preventing the silt from accumulating in the horizontal pipe 1 and causing blockage, thereby causing sewage and wastewater to overflow into the homes of high-rise residents.

[0068] The one-way valve assembly 3 is a standalone component, with the ring body 32 and valve body cavity integrally injection-molded. The valve disc 31 is mounted below the ring body 32 within the valve body cavity, centered on the pivot axis 33. The valve body cavity has a space that accommodates the rotational trajectory of the valve disc 31. The diameter of the upper port 37 matches that of the sewer pipe 2, while the diameter of the lower port 38 is smaller than that of the cross pipe 1, accommodating the connection between the sewer pipe 2 and the cross pipe 1.

[0069] In this embodiment, a torsion spring is mounted on the rotating shaft 33 as an elastic reset mechanism 34 that drives the valve disc 31 to return to its original position and close. One end of the torsion spring abuts against the lower end of the ring body 32, and the other end of the torsion spring is positioned below the valve disc 31. When the water pressure of the stored water exceeds the magnetic coupling attraction between the valve disc 31 and the magnet 35, the valve disc 31 flips downward, compressing the torsion spring and accumulating force. When the water in the water storage chamber 4 is emptied, the valve disc 31 returns to its original position due to the rebound force of the torsion spring and re-engages with the magnet 35, thereby re-entering the water storage state.

[0070] Furthermore, an annular groove is provided at the lower end of the ring body 32, and an O-type sealing ring 36 is provided in the annular groove; the sealing ring is a nitrile rubber sealing ring.

[0071] In this embodiment, an annular groove is provided at the lower end of the ring body 32, and an O-ring 36 is disposed within the annular groove. This advantageously prevents water leakage from the water storage chamber 4 at the valve plate 31. If water leaks from the valve plate 31, the water storage chamber 4 will not be able to store water and thus will not be able to flush out sediment within the horizontal pipe 1.

[0072] In this embodiment, the beneficial effect of using a nitrile rubber sealing ring is that the nitrile rubber sealing ring is resistant to corrosion, tearing and compression deformation, and can form a watertight water storage chamber 4 in combination with the valve plate 31. In addition, the nitrile rubber sealing ring has the lowest cost, thereby reducing manufacturing costs.

[0073] Reference Figure 2 As shown, it also includes a water level detection and warning system, which includes a water level detection switch 6 and a sounding device 5;

[0074] The water level detection switch 6 is arranged in the sewer pipe 2 at a height of 0.3 to 0.35 m above the one-way valve device 3;

[0075] The water level detection switch 6 is connected to the start switch of the sound generating device 5 by a signal.

[0076] In this embodiment, a water level detection switch 6 is provided in the sewer pipe 2 to detect whether backflow is about to occur in the sewer pipe 2. The water level detection switch 6 is set at a warning level for the backflow water level. When the water level exceeds the warning level, the switch closes, driving the sounding device 5 to emit an alarm sound, thereby taking measures to clear the horizontal pipe 1 before backflow occurs, thereby releasing the backflow wastewater in the sewer pipe 2. This has the beneficial effect of improving the living satisfaction of high-rise residents.

[0077] Furthermore, the water level detection switch 6 adopts a float type water level sensor.

[0078] In this embodiment, the float type water level sensor has a simple structure, high reliability, and low cost, and its beneficial effect is that it can reduce manufacturing costs.

[0079] Reference Figure 2 As shown, an air pump 7 is also included, and the air outlet of the air pump 7 is connected to the closed end of the cross pipe 1.

[0080] In this embodiment, when cross pipe 1 is severely clogged and flushing with water in reservoir chamber 4 is ineffective, pressurizing cross pipe 1 is necessary to flush the clogged area with air pressure. Because one-way valve 31 is provided in downpipe 2, when pressurizing cross pipe 1, the air pressure does not act within downpipe 2. Therefore, using air pump 7 does not exacerbate backflow, but only acts within cross pipe 1.

[0081] Reference Figure 2 As shown, it includes a water level detection switch 6 and an air pump 7;

[0082] The water level detection switch 6 is arranged in the sewer pipe 2 at a height of 0.3 to 0.35 m above the one-way valve device 3;

[0083] The air outlet of the air pump 7 is connected to the closed end of the horizontal pipe 1;

[0084] The water level detection switch 6 serves as a start switch for the air pump 7 .

[0085] In this embodiment, a water level detection switch 6 is set in the sewer pipe 2, and the water level of the sewage will trigger the water level detection switch 6 when overflowing, thereby controlling the start of the air pump 7 to pressurize and dredge the horizontal pipe 1. The beneficial effect is that the silt in the horizontal pipe 1 is cleaned before overflow occurs, thereby improving the quality of life of high-rise residents.

[0086] Furthermore, the air pump 7 adopts a diaphragm air pump with a flow rate of 10 to 20L.

[0087] In this embodiment, the air pump 7 adopts a diaphragm air pump, which has the beneficial effect of being silent and improving the quality of life of high-rise residents; the flow rate of the air pump 7 is selected to be 10 to 20L, which has the beneficial effect of being sufficient and reducing manufacturing costs.

[0088] Furthermore, in order to provide a concise description of the exemplary embodiments, all features of the actual embodiment may not be described, i.e., those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention.

[0089] It should be understood that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but for those of ordinary skill having the benefit of this disclosure, the development effort will be a routine task of design, fabrication, and production without undue experimentation.

[0090] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A pipe system for preventing water overflow from upper-floor households due to blockage of drainage pipes, comprising vertically arranged downpipes and horizontally arranged horizontal pipes, the horizontal pipes having closed ends, the downpipes being connected to the horizontal pipes, and characterized in that: Also includes a one-way valve device; The one-way valve device includes a square channel with a square cross section as a valve body cavity; An upper interface adapted to the diameter of the sewer pipe is provided at the upper end of the valve body cavity, and the upper interface is connected to the sewer pipe; The lower end of the valve body cavity is provided with a lower interface adapted to the diameter of the horizontal pipe, and the lower interface is connected to the horizontal pipe; A ring body is horizontally arranged along the inner wall of the valve body cavity. The ring body and the valve body cavity are integrally formed. The area of the center hole of the ring body is 1 to 1.2 times the area of the sewer pipe. A rotating shaft is provided at the lower end of the ring body, and the rotating shaft is connected to a valve plate; The valve disc is made of magnetic metal and has a shape that fits the center hole of the shielding ring body; The valve disc is linked to an elastic reset mechanism that drives the valve disc to reset and close, and the elastic reset mechanism uses a torsion spring as a reset mechanism; When the valve disc is reset to the closed state, the valve disc is attached to the lower end of the ring body, forming a water storage cavity in the downpipe above the valve disc; A magnetic component is provided at the lower end of the ring body on the other side away from the rotating shaft. The magnetic component is embedded in the ring body, and the surface of the magnetic component is flush with the lower end surface of the ring body. When the valve disc is in a closed state, the magnetic component is magnetically coupled to the valve disc; The magnetic coupling attraction between the magnet component and the valve plate is selected in accordance with the following conditions: The magnetic coupling suction force is greater than the pressure on the valve disc before the water storage chamber is filled with water to a height of 0.15 to 0.25 m; The magnetic coupling suction force is smaller than the pressure that the valve plate bears after the water storage chamber is filled with water to a height of 0.25 to 0.3 m.

2. The pipe system for preventing water overflow from upper-floor households due to blockage of drainage horizontal pipes according to claim 1 is characterized in that: An annular groove is provided at the lower end of the ring body, and an O-type sealing ring is provided in the annular groove; The sealing ring is made of nitrile rubber.

3. The pipe system for preventing water overflow from upper-floor households due to blockage of drainage horizontal pipes according to claim 1 is characterized in that: It also includes a water level detection and warning system, which includes a water level detection switch and a sounding device; The water level detection switch is installed in the sewer pipe at a height of 0.3 to 0.35m above the one-way valve device; The water level detection switch signal is connected to the start switch of the sounding device.

4. The pipe system for preventing water overflow from upper-floor households due to blockage of drainage horizontal pipes according to claim 3 is characterized in that: The water level detection switch adopts a float type water level sensor.

5. The piping system for preventing water overflow from upper-floor households due to blockage of drainage horizontal pipes according to claim 1 is characterized in that: The utility model also comprises an air pump, wherein the air outlet of the air pump is connected to the closed end of the horizontal pipe.

6. The piping system for preventing water overflow from upper-floor households due to blockage of drainage horizontal pipes according to claim 1 is characterized in that: It includes a water level detection switch and an air pump; The water level detection switch is installed in the sewer pipe at a height of 0.3 to 0.35m above the one-way valve device; The air outlet of the air pump is connected to the closed end of the horizontal pipe; The water level detection switch serves as the start switch of the air pump.

7. The piping system for preventing water overflow from upper-floor residents due to blockage of a horizontal drainage pipe according to any one of claims 5-6, characterized in that: The air pump adopts a diaphragm air pump with a flow rate of 10 to 20L.

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