Overflow alarm for drainage pipeline

Abstract

The invention relates to an overflow alarm for a drainage pipeline. The overflow alarm comprises an overflow sewage pipe, a paddle plate, an alarm box, a first elastic piece, a connecting rod and a signal trigger. According to the overflow alarm of the drainage pipeline, the signal trigger is installed in the alarm box located outside the overflow sewage pipe and is not affected by sewage, and meanwhile pollution discharge of the overflow sewage pipe is not affected. The paddle plate, the connecting rod and the first elastic piece trigger the signal trigger through mechanical movement, so that the paddle type water flow indicator can be smoothly applied to a drainage pipe. The problem that a water flow signal device of a pressure water supply pipeline cannot be applied to a drainage pipe is solved, cost and price are reduced, maintenance is convenient, timely maintenance can be achieved, better timeliness is achieved, and use of a drainage system is not affected.

Description

Technical Field

[0001] The present application belongs to the technical field of building drainage, and in particular relates to a drainage pipe overflow alarm. Background Art

[0002] At present, sewage and wastewater drainage pipes in buildings are often blocked, causing sewage to overflow from the toilets of residents on the lower floors, resulting in great losses and many legal disputes. A large number of construction projects have sewage overflow pipes on the ground floor and transition layer. When blocked, sewage overflows from the overflow pipe to avoid overflow in the toilets of residents on the lower floors. However, this seriously affects the use of the ground floor, overhead floor, and pipe transition layer, and also increases the workload of sanitation and cleaning. There are also designs that use closed overflow discharge pipes. When blocked, sewage is discharged from the overflow discharge pipe to the outdoor sewage network. However, when blockage and overflow occur, the closed overflow discharge pipe cannot detect the blockage in time, and there is also a risk that the overflow discharge pipe will continue to be blocked. Therefore, sewage overflow alarms are promoted and applied.

[0003] Domestic water supply pipes and fire water supply pipes often use low-cost water flow indicators, flow switches, and pressure switches to detect water flow signals inside the pipe. Water flow indicators and flow switches generally use paddles to extend into the pipe. The water flow impacts the paddles, causing the ends of the paddles to tilt and contact, connecting the electrical circuit to generate signals. From beginning to end, the paddles have been set in the center of the pipe and are impacted by high flow rates under various water flow conditions. The pressure switch is generally connected to a small tube at the opening of the main pipe through which the water flows. The small tube is connected to the pressure sensing element of the pressure switch. When water flows in the main pipe or the water pressure changes to the set value, the sensing element generates a trigger signal.

[0004] Unlike the flow or pressure signal devices of clean domestic water supply pipes and fire water supply pipes, the water flow in the sewage pipe is a fluid with three phases of solid, liquid and gas coexisting. Any protruding components in the pipe are easy to cause the overflow discharge pipe to be blocked. Any small-diameter connecting pipe used to generate signals is easy to be blocked and lose its functional purpose. In addition, the water flow and water pressure in the drain pipe are very small, and the pressure switch of the pressurized water supply pipe cannot be used on the drain pipe at all; the water flow in the sewage pipe is annular film flow with a low flow rate. If a conventional water flow indicator is used inside the drain pipe, the paddle plate cannot be impacted by the water flow and lacks feasibility. Therefore, it is difficult for conventional pressure switches or water flow indicators to monitor overflow in sewage pipes. Summary of the invention

[0005] The technical problem to be solved by the present invention is: to solve the problem that conventional pressure switches or water flow indicators in the prior art are difficult to monitor overflow in sewage pipes, thereby providing a drainage pipe overflow alarm.

[0006] The technical solution adopted by the present invention to solve its technical problem is: A drainage pipe overflow alarm, comprising: An overflow sewage pipe, wherein a first side of the overflow sewage pipe has a water inlet, the water inlet is used to connect to a drainage system to receive sewage overflowing from the drainage system; a second side of the overflow sewage pipe has a connecting rod through hole, the second side is the opposite side of the first side; A paddle board is hinged to the inner wall of the overflow sewage pipe; the paddle board can be rotated so that one end thereof can abut against the first side of the overflow sewage pipe, or move from the first side to the second side of the overflow sewage pipe; An alarm box is located outside the overflow sewage pipe, and the interior of the alarm box is connected to the connecting rod through a hole; A first elastic member is installed in the alarm box; a connecting rod movably mounted in the connecting rod through hole, one end of the connecting rod being connected to the paddle plate, and the other end being connected to the first elastic member; under the elastic action of the first elastic member, when the paddle plate is not impacted by the sewage entering from the water inlet, the connecting rod provides a thrust for one end of the paddle plate to abut against the first side of the overflow sewage pipe; A signal trigger is installed in the alarm box, and the signal trigger is connected to the connecting rod; when the paddle plate moves from the first side to the second side of the overflow sewage pipe, the connecting rod can trigger the signal trigger driven by the paddle plate.

[0007] Preferably, in the drainage pipe overflow alarm of the present invention, an edge of one end of the paddle plate is arc-shaped, and the curvature of the arc matches the curvature of the inner wall of the overflow sewage pipe.

[0008] Preferably, in the drainage pipe overflow alarm of the present invention, the signal trigger comprises: A contact piece, fixed on the connecting rod; A circuit contact, movably mounted in the alarm box; A signal wire, one end of which is connected to the circuit contact and the other end is used to connect to a signal receiver; When the contact piece contacts the circuit contact, the signal wire is turned on, so that the signal receiver acquires the signal.

[0009] Preferably, in the drainage pipe overflow alarm of the present invention, the signal trigger further comprises: a second elastic member connected to the circuit contact and used for resetting the circuit contact after the external force is removed.

[0010] Preferably, in the drainage pipe overflow alarm of the present invention, the signal trigger further comprises: a slide rail fixed in the alarm box; the circuit contact is mounted on the slide rail and can slide along the slide rail.

[0011] Preferably, in the drainage pipe overflow alarm of the present invention, the slide rail is arranged parallel to the connecting rod, the second elastic member is a spring or a tension spring, and the axial direction of the second elastic member is parallel to the slide rail.

[0012] Preferably, the drainage pipe overflow alarm of the present invention further includes: a drainage water tongue, which is fixed to the inner wall of the first side of the overflow sewage pipe and located at the lower edge of the water inlet, for guiding the fluid entering from the water inlet.

[0013] Preferably, the drainage pipe overflow alarm of the present invention further comprises: a collar, wherein the collar is fixed to a side of the paddle plate facing away from the water inlet, and one end of the connecting rod is inserted into the collar.

[0014] Preferably, in the drainage pipe overflow alarm of the present invention, the connecting rod is an L-shaped rod, including a first section and a second section perpendicular to each other, the first section is inserted into the ring, and the second section is movably installed in the connecting rod through hole.

[0015] Preferably, the drainage pipe overflow alarm of the present invention further comprises: A connecting rod fulcrum, fixed to the side wall of the second side of the overflow sewage pipe, for supporting the connecting rod; A water-blocking rubber ring is fixed to the edge of the connecting rod through hole and is used to block the sewage in the overflow sewage pipe from entering the alarm box through the connecting rod through hole.

[0016] Preferably, in the drainage pipe overflow alarm of the present invention, the water retaining rubber ring is fixed to the inner wall of the overflow sewage pipe, the water retaining rubber ring has a notch, and the second section can be embedded in the notch.

[0017] Preferably, in the drainage pipe overflow alarm of the present invention, the top of the overflow sewage pipe has a connecting port, and the connecting port is sealed with a pipe cap.

[0018] Preferably, the drainage pipe overflow alarm of the present invention further includes: a branch, which is connected to the overflow sewage pipe and is located on one side of the pipe body, the water inlet is formed at the drainage port of the branch, the inner diameter of the branch is smaller than the inner diameter of the overflow sewage pipe, and the branch is connected to the overflow sewage pipe at an angle of 45°.

[0019] The beneficial effects of the present invention are as follows: the signal trigger is installed in the alarm box located outside the overflow sewage pipe, is not affected by sewage, and does not affect the sewage discharge of the overflow sewage pipe. The paddle plate, the connecting rod and the first elastic member trigger the signal trigger through mechanical activities, so that the paddle-type water flow indicator can be successfully applied in the drainage pipe.

[0020] When there is no overflow in the drainage system, tiny drops of condensed water and the like will not generate any alarm; one end of the pulp plate can abut against the first side of the overflow sewage pipe, so that under the condition of a tiny overflow in the drainage system, the overflow alarm can sensitively alarm; when the drainage system overflows with a large flow rate, or even under the drainage condition of a large amount of solid matter and fibrous matter, the pulp plate can shrink to the second side wall of the overflow sewage pipe without generating any obstruction, and the overflow sewage pipe can overflow and drain smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The technical solution of the present application is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 It is a schematic diagram of the connection relationship between the drainage pipe overflow alarm and the building drainage system in Example 1 of the present application; Figure 2 Schematic diagram of the cross-section structure of the drainage pipe overflow alarm of Example 1 of the present application, wherein (a) is a state where the pulp plate is not impacted, (b) is a state where the pulp plate is impacted by a small overflow, and (c) is a state where the pulp plate is impacted by a large overflow; Figure 3 for Figure 2 AA cross-sectional view, wherein (a) is a state where the pulp plate is not impacted, (b) is a state where the pulp plate is impacted by a small overflow, and (c) is a state where the pulp plate is impacted by a large overflow; Figure 4 for Figure 2 BB cross-sectional view; Figure 5 for Figure 2 CC section view; Figure 6 is a front view of the pulp plate structure of Example 1 of the present application; Figure 7 It is a front view of the water retaining rubber ring structure of Example 1 of the present application; Figure 8 This is a schematic diagram of the cross-section structure of the drainage pipe overflow alarm of Example 2 of the present application, wherein (a) is a state where the pulp plate is not impacted, (b) is a state where the pulp plate is impacted by a small overflow, and (c) is a state where the pulp plate is impacted by a large overflow.

[0023] The reference numerals in the figure are: 1. Circuit contacts; 2. A second elastic member; 3. Pulp board; 4. Signal wire; 5. a first elastic member; 6. Slide rail; 7. Connecting rod fulcrum; 8. Connecting rod; 9. Water-retaining rubber ring; 10. Ring; 11. Drainage water tongue; 12. Pipe cap; 13. Overflow sewage pipe; 14. Drainage system; 15. Alarm box; 16. Ventilation pipe; 17. Guide hole; 18. First mounting hole; 19. Connectors; 20. Second mounting hole. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0025] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the invention, unless otherwise specified, "multiple" means two or more.

[0026] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0027] The technical solution of the present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments. Example

[0028] This embodiment provides a drainage pipe overflow alarm. Figure 1 , Figure 2As shown, it includes: an overflow sewage pipe 13, a paddle plate 3, an alarm box 15, a first elastic member 5, a connecting rod 8 and a signal trigger.

[0029] The first side of the overflow sewage pipe 13 has a water inlet, which is used to connect to the drainage system 14 to receive the sewage overflowing from the drainage system 14; the second side of the overflow sewage pipe 13 has a connecting rod passing hole, and the second side is the opposite side of the first side.

[0030] The paddle plate 3 is hinged to the inner wall of the overflow sewage pipe 13 ; the paddle plate 3 can be rotated so that one end thereof can abut against the first side of the overflow sewage pipe 13 , or move from the first side of the overflow sewage pipe 13 to the second side.

[0031] The alarm box 15 is located outside the overflow sewage pipe 13, and the interior of the alarm box 15 is connected to the connecting rod through a hole.

[0032] The first elastic member 5 is installed in the alarm box 15 .

[0033] The connecting rod 8 is movably installed in the connecting rod through hole, one end of the connecting rod 8 is connected to the paddle plate 3, and the other end is connected to the first elastic member 5; under the elastic action of the first elastic member 5, when the paddle plate 3 is not impacted by the sewage entering from the water inlet, the connecting rod 8 provides a thrust for one end of the paddle plate 3 to abut against the first side of the overflow sewage pipe 13.

[0034] The signal trigger is installed in the alarm box 15, and the signal trigger is connected to the connecting rod 8; when the paddle board 3 moves from the first side to the second side of the overflow sewage pipe 13, the connecting rod 8 can trigger the signal trigger driven by the paddle board 3. When the signal trigger is triggered, the drainage pipe overflow alarm sounds.

[0035] In the drainage pipe overflow alarm of this embodiment, the signal trigger is installed in the alarm box 15 located outside the overflow sewage pipe 13, which is not affected by sewage and does not affect the sewage discharge of the overflow sewage pipe 13. The paddle plate 3, the connecting rod 8 and the first elastic member 5 trigger the signal trigger through mechanical activities, so that the paddle-type water flow indicator can be smoothly used in the drainage pipe. It solves the problem that the water flow signal device of the pressurized water supply pipe cannot be used in the drainage pipe, reduces the cost and price, facilitates maintenance, can be repaired in time, has better timeliness, and does not affect the use of the drainage system.

[0036] When the drainage system 14 does not overflow, tiny drops of condensed water and the like will not generate any alarm; one end of the pulp plate 3 can abut against the first side of the overflow sewage pipe 13, so that under the condition of a tiny overflow of the drainage system 14, the overflow alarm can sensitively alarm; when the drainage system 14 overflows with a large flow rate, or even under the drainage condition of a large amount of solid matter and fibrous matter, the pulp plate 3 can shrink to the second side wall of the overflow sewage pipe 13 without generating any obstruction, and the overflow sewage pipe 13 can overflow and drain smoothly.

[0037] The drainage pipe overflow alarm of this embodiment is as follows: Figure 2 , Figure 3 As shown, its operating principle is as follows: (a) When the drainage system 14 does not overflow, the elastic force of the first elastic member 5 pushes the connecting rod 8 to make the lower end of the paddle plate 3 almost completely close to the first side inner wall of the overflow sewage pipe 13. Since the elastic force of the first elastic member 5 is of a certain magnitude, the tiny drops of condensed water and the like falling on the paddle plate 3 cannot cause the paddle plate 3 to rotate significantly due to the small gravitational potential energy of the water drops. Moreover, since the paddle plate 3 and the first side inner wall of the overflow sewage pipe 13 are not sealed even if they are in close contact, the water drops will gradually leak instead of gathering between the paddle plate 3 and the inner wall of the overflow sewage pipe 13, and thus will not cause the paddle plate 3 to rotate subsequently. Therefore, the connecting rod 8 will not produce obvious movement, the signal trigger will not be triggered, and the drainage pipe overflow alarm will not alarm.

[0038] (b) If Figure 2 Middle b, Figure 3 As shown in b, under the condition of slight overflow of the drainage system 14, since the water flow has a certain flow rate and falls on the paddle board 3, the gravitational potential energy of the water flow is large enough to cause the paddle board 3 to rotate significantly. Therefore, the connecting rod 8 moves to trigger the signal trigger, and the drainage pipe overflow alarm sounds.

[0039] (c) If Figure 2 Middle c, Figure 3 As shown in Figure c, when the drainage system 14 overflows with a large amount of solid matter and fiber, due to the excessive flow of water, the water falls on the pulp board 3, causing the pulp board 3 to rotate significantly until the lower end of the pulp board 3 abuts against the second side of the overflow sewage pipe 13, and the connecting rod 8 moves to trigger the signal trigger, and the drainage pipe overflow alarm alarms. If this large flow overflow is continuous, the pulp board 3 will continue to abut against the second side of the overflow sewage pipe 13, and the connecting rod 8 will also keep triggering the signal trigger, and the alarm will continue accordingly.

[0040] Preferably, the drainage pipe overflow alarm of this embodiment is as follows: Figure 6 As shown, one end edge of the paddle plate 3 is arc-shaped. Figure 3As shown, the curvature of the arc matches the curvature of the inner wall of the overflow sewage pipe 13. In this embodiment, the arc-shaped design of the edge of one end of the paddle plate 3 can ensure that when one end of the paddle plate 3 abuts against the inner wall of the overflow sewage pipe 13, it is almost completely in contact with the inner wall of the overflow sewage pipe 13, thereby avoiding failure to sense the fluid flowing down the first side wall of the overflow sewage pipe 13.

[0041] Preferably, the drainage pipe overflow alarm of this embodiment is as follows: Figure 3 As shown, the body of the paddle board 3 is arc-shaped. This structure can increase the surface area at the same width, can withstand more water impact and reduce the splashing water entering the rear of the paddle board 3, and protect the rear connecting rod through the hole. Figure 3 As shown in c, this arc-shaped structure can be more closely attached to the second side of the overflow sewage pipe 13, creating a large flow cross-section area to facilitate sewage circulation.

[0042] Preferably, the drainage pipe overflow alarm of this embodiment is as follows: Figure 2 a in Figure 4 , Figure 5 As shown, the signal trigger includes: a contact piece, a circuit contact 1 and a signal wire 4.

[0043] The contact piece is fixed on the connecting rod 8; the circuit contact 1 is movably installed in the alarm box 15; one end of the signal wire 4 is connected to the circuit contact 1, and the other end is used to connect to the signal receiver; when the contact piece contacts the circuit contact 1, the signal wire 4 is turned on, allowing the signal receiver to obtain the signal.

[0044] In this embodiment, the contact piece is fixed by the connecting rod 8, so that the contact piece can change the conductive state of the signal wire 4 accordingly with the movement of the connecting rod 8, thereby sending different signals and triggering the drainage pipe overflow alarm to alarm.

[0045] Preferably, the drainage pipe overflow alarm of this embodiment is as follows: Figure 2 As shown, the signal trigger also includes: a second elastic member 2, connected to the circuit contact 1, for resetting the circuit contact 1 after the external force is removed. In this embodiment, the second elastic member 2 can avoid the need for manual resetting each time the circuit contact 1 is pushed.

[0046] Preferably, the drainage pipe overflow alarm of this embodiment is as follows: Figure 2 As shown, the signal trigger further includes: a slide rail 6 fixed in the alarm box 15; the circuit contact 1 is mounted on the slide rail 6 and can slide along the slide rail 6. In this embodiment, the movement track of the circuit contact 1 is determined by the setting of the slide rail 6, which can facilitate the circuit contact 1 to move or reset according to the designed path, which is conducive to the stable triggering of the signal.

[0047] Preferably, the drainage pipe overflow alarm of this embodiment is as follows: Figure 2 As shown, the slide rail 6 is arranged parallel to the connecting rod 8, the second elastic member 2 is a tension spring, and the axial direction of the second elastic member 2 is parallel to the slide rail 6. In this embodiment, the arrangement structure of the tension spring is simple and feasible, and the direction of the tension is the extension direction of the slide rail, which is convenient for the circuit contact 1 to be stably stressed. It can be understood that, as an alternative, the second elastic member 2 can also be a spring. Figure 4 As shown, in order to facilitate the fixing of the spring or the tension spring, a first mounting hole 18 is provided on the circuit contact 1 .

[0048] Preferably, the drainage pipe overflow alarm of this embodiment is as follows: Figure 2 As shown, there are two slide rails 6, which are respectively located on the upper and lower sides of the connecting rod 8, and two corresponding circuit contacts 1 are also provided. This arrangement can make the guiding force received by the circuit contact 1 more balanced when sliding.

[0049] Preferably, if Figure 4 As shown, in order to synchronize the two circuit contacts 1, the two circuit contacts 1 are also fixed by a connector 19. The two circuit contacts 1 are made of metal sheets. The material of the connector 19 can be an insulating material such as plastic. The ends of the two circuit contacts 1 also have guide holes 17, which are used to be sleeved on the slide rails 6. The guide holes 17 can be formed by metal rings. This structure can enable the two circuit contacts 1 to move stably along the two slide rails 6. The contact sheet can be a conductor such as metal, such as Figure 5 As shown, the contact piece forms an electrical path after contacting the circuit contact 1.

[0050] Preferably, if Figure 2 As shown, in this embodiment, a spring is used as the first elastic member 5, one end of the first elastic member 5 abuts against the contact sheet, and the other end abuts against the inner wall of the alarm box away from the side wall of the overflow sewage pipe 13. After the spring is compressed, it provides elastic force for the connecting rod 8 to push the paddle plate 3 to rotate toward the first side of the overflow sewage pipe 13. On the contrary, when the paddle plate 3 is impacted by the water flow and rotates toward the second side of the overflow sewage pipe 13, the spring is correspondingly compressed to obtain elastic potential energy.

[0051] Preferably, the drainage pipe overflow alarm of this embodiment is as follows: Figure 2 As shown in a in the figure, it also includes a drainage tongue 11, which is fixed to the inner wall of the first side of the overflow sewage pipe 13 and is located at the lower edge of the water inlet, and is used to guide the fluid entering from the water inlet. In this embodiment, the function of the drainage tongue 11 is to drain the fluid to a certain extent when a small flow overflow occurs in the drainage system 14, so that the fluid flows slightly away from the inner wall of the overflow sewage pipe 13, so as to contact the pulp board 3 more stably, and avoid insufficient contact of the pulp board 3 and failure to trigger an alarm.

[0052] Preferably, the drainage pipe overflow alarm of this embodiment is as follows: Figure 2 As shown in a in the figure, it also includes a collar 10, which is fixed on the side of the paddle board 3 facing away from the water inlet, and one end of the connecting rod 8 is inserted into the collar 10. In this embodiment, the setting of the collar 10 can facilitate the flexible connection between the connecting rod 8 and the paddle board 3, and the disassembly and assembly are relatively simple, and this connection mode will not be affected as the paddle board 3 rotates.

[0053] Preferably, the drainage pipe overflow alarm of this embodiment is as follows: Figure 2 As shown in a in the figure, the connecting rod 8 is an L-shaped rod, including a first section and a second section perpendicular to each other, the first section is inserted into the collar 10, and the second section is movably installed in the connecting rod through hole. In this embodiment, the connecting rod 8 is designed to be L-shaped, which can be well matched with the collar 10, and is also convenient for movement in the connecting rod through hole.

[0054] Preferably, if Figure 2 As shown in a, the drainage pipe overflow alarm of this embodiment also includes: a connecting rod fulcrum 7 and a water-blocking rubber ring 9. The connecting rod fulcrum 7 is fixed to the side wall of the second side of the overflow sewage pipe 13 to support the connecting rod 8; the water-blocking rubber ring 9 is fixed to the edge of the connecting rod through hole to prevent the sewage in the overflow sewage pipe 13 from entering the alarm box 15 through the connecting rod through hole. In this embodiment, through the setting of the connecting rod fulcrum 7, sufficient supporting surface and supporting force can be provided to the connecting rod 8 to ensure that the connecting rod 8 does not loosen under long-term activities. The water-blocking rubber ring 9 can prevent water from entering the alarm box 15 and avoid the circuit components in the alarm box 15 from being affected.

[0055] Preferably, the drainage pipe overflow alarm of this embodiment is as follows: Figure 2 As shown in a, the water retaining rubber ring 9 is fixed to the inner wall of the overflow sewage pipe 13, as shown in Figure 7 As shown, the water retaining rubber ring 9 has a notch, and the second section can be embedded in the notch. In this embodiment, the water retaining rubber ring 9 is provided with a notch to make room for the second section, so that the second section can be closer to the inner wall of the overflow sewage pipe 13, and the rotation range of the paddle plate 3 is correspondingly improved, so that the paddle plate 3 can be closer to the second side of the overflow sewage pipe 13, and when the drainage system 14 generates a large flow overflow, the paddle plate 3 reduces the obstruction of the fluid to avoid the retention of solid matter and fiber matter in the sewage.

[0056] Preferably, the drainage pipe overflow alarm of this embodiment is as follows: Figure 1 As shown, the top of the overflow sewage pipe 13 is provided with a connection port, which is sealed with a pipe cap 12 as an inspection port. The pipe cap 12 can be threadedly connected to facilitate inspection, flushing and clearing.

[0057] Preferably, if Figure 1 As shown, the drainage pipe overflow alarm of this embodiment also includes: a branch, the branch is connected to the overflow sewage pipe 13, and is located on one side of the overflow sewage pipe 13, the water inlet is formed at the drainage port of the branch, the inner diameter of the branch is smaller than the inner diameter of the overflow sewage pipe 13, and the branch is connected to the overflow sewage pipe 13 at a 45° angle. In this embodiment, the branch and the overflow sewage pipe 13 form a 45° reducing tee (the inner diameter of the vertical pipe is enlarged by one level, whether the lower pipe diameter needs to be kept one level larger or reduced in diameter, which is specifically determined by the architectural designer according to the situation).

[0058] In an optional embodiment, if Figure 1 As shown, the drainage system 14 includes a vent pipe 16, which is a pipe used to discharge air in the drainage system 14 to balance the air pressure. The drainage pipe overflow alarm of this embodiment is connected to the vent pipe 16 through the overflow sewage pipe 13, so that the air pressure at the outdoor drainage pipe, the discharge pipe, the conversion horizontal main pipe, etc. is balanced. When it is not blocked at ordinary times, the overflow sewage pipe 13 is also a yoke-shaped vent pipe or a biased decompression vent pipe of the drainage system 14, and also a vent pipe of the discharge pipe and the conversion horizontal main pipe.

[0059] Yoke vents are only used in China to connect special ventilation risers and drainage risers, so they are called combined vents. Yoke vents are also commonly used in Europe and the United States to connect special ventilation risers with offset drainage transverse pipes (usually at the ends). Under normal circumstances, an offset transverse pipe with a distance less than 1.5m is called a yoke vent, and one with a distance greater than 1.5m is called an offset relief vent.

[0060] In other embodiments, the drainage pipe overflow alarm may also be connected to a drainage system 14 without a vent pipe 16 through an overflow sewage pipe 13 .

[0061] Preferably, in the drainage pipe overflow alarm of this embodiment, the alarm box 15 is fixed with bolts and nuts, and can be disassembled and inspected regularly every year by security guards and other property management personnel, and should also be disassembled and inspected after each overflow. Example

[0062] like Figure 8 As shown, this embodiment provides a first elastic member 5 different from that of embodiment 1. The first elastic member 5 is a tension spring. In this embodiment, one end of the first elastic member 5 is connected to the contact sheet, and the other end is connected to the outer wall of the second side of the overflow sewage pipe 13. After the tension spring is stretched, it provides elastic force to the connecting rod 8 to push the paddle plate 3 to rotate toward the first side of the overflow sewage pipe 13. On the contrary, when the paddle plate 3 is impacted by the water flow and rotates toward the second side of the overflow sewage pipe 13, the spring is correspondingly compressed to obtain elastic potential energy.

[0063] Preferably, Figure 5 As shown, in order to facilitate the fixing of the tension spring, a second mounting hole 20 for fixing the tension spring is opened on the contact piece.

[0064] Based on the above ideal embodiments of this application, the relevant staff can make various changes and modifications without departing from the technical concept of this application through the above description. The technical scope of this application is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A drainage pipe overflow alarm, characterized in that: include: An overflow sewage pipe (13) has a water inlet on a first side thereof, the water inlet being used to connect to a drainage system (14) to receive sewage overflowing from the drainage system (14); a second side of the overflow sewage pipe (13) has a connecting rod through hole, the second side being the opposite side of the first side; A paddle plate (3) is hinged to the inner wall of the overflow sewage pipe (13); the paddle plate (3) is rotated so that one end thereof can abut against the first side of the overflow sewage pipe (13), or move from the first side to the second side of the overflow sewage pipe (13); An alarm box (15) is located outside the overflow sewage pipe (13), and the interior of the alarm box (15) is connected to the connecting rod through a hole; A first elastic member (5) is installed in the alarm box (15); A connecting rod (8) is movably mounted in the connecting rod through hole, one end of the connecting rod (8) is connected to the paddle plate (3), and the other end is connected to the first elastic member (5); under the elastic action of the first elastic member (5), when the paddle plate (3) is not impacted by sewage entering from the water inlet, the connecting rod (8) provides a thrust for one end of the paddle plate (3) to abut against the first side of the overflow sewage pipe (13); A signal trigger is installed in the alarm box (15), and the signal trigger is connected to the connecting rod (8); when the paddle plate (3) moves from the first side to the second side of the overflow sewage pipe (13), the connecting rod (8) can trigger the signal trigger under the drive of the paddle plate (3).

2. The drainage pipe overflow alarm according to claim 1, characterized in that: One end edge of the pulp plate (3) is arc-shaped, and the curvature of the arc matches the curvature of the inner wall of the overflow sewage pipe (13).

3. The drainage pipe overflow alarm according to claim 1, characterized in that: The signal trigger comprises: A contact piece fixed on the connecting rod (8); A circuit contact (1) movably mounted in the alarm box (15); A signal wire (4), one end of which is connected to the circuit contact (1) and the other end of which is used to connect to a signal receiver; When the contact piece contacts the circuit contact (1), the signal wire (4) is turned on, allowing the signal receiver to acquire a signal.

4. The drainage pipe overflow alarm according to claim 3, characterized in that: The signal trigger further comprises: a second elastic member (2) connected to the circuit contact (1) and used for resetting the circuit contact (1) after it has moved, after the external force is removed.

5. The drainage pipe overflow alarm according to claim 4, characterized in that: The signal trigger further comprises: a slide rail (6) fixed in the alarm box (15); the circuit contact (1) is mounted on the slide rail (6) and is capable of sliding along the slide rail (6).

6. The drainage pipe overflow alarm according to claim 5, characterized in that: The slide rail (6) is arranged parallel to the connecting rod (8); the second elastic member (2) is a spring or a tension spring; and the axial direction of the second elastic member (2) is parallel to the slide rail (6).

7. The drainage pipe overflow alarm according to any one of claims 1 to 6, characterized in that: The drainage pipe overflow alarm further comprises: a drainage water tongue (11), the drainage water tongue (11) being fixed to the inner wall of the first side of the overflow sewage pipe (13) and located at the lower edge of the water inlet, and being used to guide the fluid entering from the water inlet.

8. The drainage pipe overflow alarm according to any one of claims 1 to 6, characterized in that: The drainage pipe overflow alarm further comprises: a collar (10), the collar (10) being fixed on a side of the paddle plate (3) facing away from the water inlet, and one end of the connecting rod (8) being inserted into the collar (10).

9. The drainage pipe overflow alarm according to claim 8, characterized in that: The connecting rod (8) is an L-shaped rod, comprising a first section and a second section which are perpendicular to each other, the first section being inserted into the sleeve ring (10), and the second section being movably mounted in the connecting rod through hole.

10. The drainage pipe overflow alarm according to claim 9, characterized in that: The drainage pipe overflow alarm also includes: A connecting rod fulcrum (7) is fixed to the side wall of the second side of the overflow sewage pipe (13) and is used to support the connecting rod (8); A water-blocking rubber ring (9) is fixed to the edge of the connecting rod through hole and is used to block sewage in the overflow sewage pipe (13) from entering the alarm box (15) through the connecting rod through hole.

11. The drainage pipe overflow alarm according to claim 10, characterized in that: The water-retaining rubber ring (9) is fixed to the inner wall of the overflow sewage pipe (13); the water-retaining rubber ring (9) has a notch, and the second section can be embedded in the notch.

12. The drainage pipe overflow alarm according to any one of claims 1 to 6, characterized in that: The top of the overflow sewage pipe (13) is provided with a connection port, and the connection port is sealed with a pipe cap (12).

13. The drainage pipe overflow alarm according to any one of claims 1 to 6, characterized in that: The drainage pipe overflow alarm further comprises: a branch, the branch being in communication with the overflow sewage pipe (13) and being located on one side of the overflow sewage pipe (13); the water inlet being formed at the drainage port of the branch; the inner diameter of the branch being smaller than the inner diameter of the overflow sewage pipe (13); and the branch being connected to the overflow sewage pipe (13) at an angle of 45°.

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