Anti-reflux directional drain

Abstract

The utility model relates to the technical field of drainage pipeline, and disclose a kind of directional drainage pipeline of anti-reflux, including the main pipeline of two, two the directional pipe of two are arranged between the main pipeline, the two ends of two directional pipe are fixedly connected with branch pipeline, the branch pipeline is fixedly connected with the main pipeline respectively at the one end away from directional pipe, the water pipe is set to the opposite end of two main pipelines, the one-way mechanism of preventing reflux is set to the inside of two directional pipes, the connecting mechanism for the quick docking of device is set between water pipe and main pipeline, not only can make the device can be bidirectional use, but also can effectively prevent fluid reflux while fluid flows, give consideration to bidirectional use and reflux function, make pipeline still be able to flexible operation under complex scene.

Description

Technical Field

[0001] This utility model relates to the field of drainage pipe technology, specifically a directional drainage pipe that prevents backflow. Background Technology

[0002] Drainage pipelines are a core component of urban and regional drainage systems, referring to a complete system comprised of pipes and channels used to collect and transport sewage, wastewater, and rainwater, along with supporting ancillary facilities. Their scope is broad, encompassing main pipes carrying primary water transport functions, branch pipes for diversion and transport, and dedicated pipelines connecting to sewage treatment plants. Whether these pipelines are laid beneath city streets, within building complexes, or in other specific areas, as long as they possess the core function of drainage, they fall within the statistical scope of drainage pipelines. Together, they form a critical infrastructure network ensuring regional water environment stability and the orderly flow of water resources. Rainwater harvesting systems, building-connected drainage / replenishment pipelines, and industrial circulating water pipelines must consider both forward drainage and reverse fluid transport under specific conditions.

[0003] However, while existing anti-backflow directional drainage pipes can prevent fluid from flowing back inside the pipes, they do not have bidirectional functionality. This means that fluid can only flow and be transported in a specific direction, and they cannot accommodate both forward drainage and reverse fluid transport under specific conditions, making them impractical. Utility Model Content

[0004] This invention provides a directional drainage pipe that prevents backflow, which can take into account both forward drainage and reverse fluid transport under specific conditions, and also prevent fluid backflow, thus solving the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a directional drainage pipe for preventing backflow, comprising two main pipes, two directional pipes between the two main pipes, and auxiliary pipes fixedly connected to both ends of the two directional pipes. The ends of the auxiliary pipes away from the directional pipes are fixedly connected to the main pipes respectively. Water pipes are provided at the opposite ends of the two main pipes. One-way mechanisms to prevent backflow are provided inside the two directional pipes. A quick-connection mechanism for the device is provided between the water pipes and the main pipes.

[0006] Preferably, the one-way mechanism includes a piston disposed inside the directional tube, a matching sealing ring fixedly connected to the directional tube near the piston, a slide rod fixedly connected to the center of the end of the piston away from the sealing ring, a limit plate fixedly connected to the end of the slide rod away from the piston, and the slide rod near the limit plate being slidably connected to the directional tube by an elastic element.

[0007] Preferably, the elastic element includes a fixed sleeve fitted onto the outer surface of the slide rod, an annular plate is fixedly connected to the outer surface of the fixed sleeve, a connecting rod is fixedly connected to each of the four corners of the annular plate, the end of each connecting rod away from the annular plate is fixedly connected to the directional tube, and a spring is provided between the annular plate and the piston, the spring being fitted onto the outer surface of the slide rod.

[0008] Preferably, the connection mechanism includes a first connector fixedly installed at one end of the water pipe, a matching second connector provided at the end of the first connector near the main pipe, two second connectors fixedly connected to the main pipe respectively, a first buckle fixedly connected to both sides of the first connector, a first locking strip fixedly connected to the first connector near the first buckle, a second locking strip engaged on the outer side of the first locking strip, the second locking strips fixedly connected to the second connectors, and a second buckle fixedly connected to the second connectors near the second locking strips, the second buckles engaged with the first locking strips.

[0009] Preferably, a sealing ring is provided between the first connector and the second connector, and the sealing ring is respectively embedded inside the second connector.

[0010] Preferably, the two directional tubes are arranged in opposite directions.

[0011] This utility model has the following beneficial effects: Through the coordinated action of the main pipe, directional pipe, auxiliary pipe, water pipe, and unidirectional mechanism, the device can not only be used in both directions, but also effectively prevent fluid backflow while the fluid is flowing. It combines the functions of bidirectional use and backflow prevention, allowing the pipeline to operate flexibly even in complex scenarios.

[0012] With the coordinated action of the main pipe, directional pipe, auxiliary pipe, water pipe and connecting mechanism, users can easily and quickly connect the device between two water pipes to prevent backflow of fluid inside the water pipe. The connection is also relatively stable and not easy to loosen or fall off, which improves the practicality of the device. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the unidirectional mechanism structure of this utility model.

[0015] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0016] Figure 4 This is a schematic diagram of the connection mechanism of this utility model.

[0017] Figure 5 For the present utility model Figure 4 Enlarged structural diagram at point B.

[0018] In the diagram: 1. Main pipe; 2. Directional pipe; 3. Secondary pipe; 4. Water pipe; 5. One-way mechanism; 51. Piston; 52. Sealing ring; 53. Sliding rod; 54. Limiting plate; 55. Elastic component; 551. Fixing sleeve; 552. Annular plate; 553. Connecting rod; 554. Spring; 6. Connecting mechanism; 61. First connector; 62. Second connector; 63. First buckle; 64. First locking strip; 65. Second locking strip; 66. Second buckle; 7. Sealing ring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0020] This embodiment aims to facilitate a solution to the problem of preventing fluid backflow while allowing bidirectional fluid flow. Please refer to [link to relevant documentation]. Figures 1-3 A backflow-preventing directional drainage pipe includes two main pipes 1 and two directional pipes 2 between them. The directional pipes 2 are composed of cylindrical pipe sections of different diameters with a diameter transition. Both ends of the two directional pipes 2 are fixedly connected to secondary pipes 3. The ends of the secondary pipes 3 away from the directional pipes 2 are fixedly connected to the main pipes 1. Water pipes 4 are installed at opposite ends of the two main pipes 1. The interior of the two directional pipes 2 is equipped with a one-way mechanism 5 to prevent backflow, which not only enables bidirectional flow of fluid within the device but also prevents backflow. A quick-connection mechanism 6 is provided between the water pipes 4 and the main pipes 1 to facilitate quick connection of the device between the two water pipes 4.

[0021] The one-way mechanism 5 includes a piston 51 disposed inside the directional tube 2. A matching sealing ring 52 is fixedly connected to the directional tube 2 near the piston 51. The piston 51 can fit tightly with the sealing ring 52, thereby blocking the directional tube 2. A slide rod 53 is fixedly connected to the center of the end of the piston 51 away from the sealing ring 52. A limit plate 54 is fixedly connected to the end of the slide rod 53 away from the piston 51. The slide rod 53 is slidably connected to the directional tube 2 near the limit plate 54 through an elastic member 55. The elastic member 55 can apply a thrust to the sealing ring 52 to move towards the sealing ring 52.

[0022] The elastic component 55 includes a fixed sleeve 551 sleeved on the outer surface of the slide rod 53. The fixed sleeve 551 can limit the slide rod 53 and the piston 51, allowing the slide rod 53 and the piston 51 to slide flexibly horizontally. An annular plate 552 is fixedly connected to the outer surface of the fixed sleeve 551. Connecting rods 553 are fixedly connected to the four corners of the annular plate 552. The end of the connecting rod 553 away from the annular plate 552 is fixedly connected to the directional tube 2. A spring 554 is provided between the annular plate 552 and the piston 51. The spring 554 is sleeved on the outer surface of the slide rod 53. The elastic force of the spring 554 is greater than the pressure when the fluid is reversed. The pressure when the fluid is transported is greater than the elastic force of the spring 554.

[0023] In this embodiment: after the water in the water pipe 4 is transported to the inside of the main pipe 1, the water flows from the secondary pipe 3 on one side into the inside of one of the directional pipes 2. The water pushes the piston 51 inside the directional pipe 2, causing the piston 51 to separate from the sealing ring 52. The water then flows through the gap between the piston 51 and the sealing ring 52 to the other side of the device. When the water flow stops, the water pressure decreases, and the spring 554 pushes the piston 51 through the cooperation of the annular plate 552 and the connecting rod 553, causing the piston 51 to move into the inside of the sealing ring 52. The piston 51 and the sealing ring 52 fit tightly together, thereby blocking the directional pipe 2 to prevent fluid backflow. Example

[0024] This embodiment aims to facilitate the rapid installation of a device to prevent backflow of fluid inside a pipeline. This embodiment is an improvement upon Embodiment 1. For details, please refer to [link to Embodiment 1]. Figures 1-5 The connecting mechanism 6 includes a first connector 61 fixedly installed at one end of the water pipe 4. A matching second connector 62 is provided at the end of the first connector 61 near the main pipe 1. The two second connectors 62 are fixedly connected to the main pipe 1 respectively. A first buckle 63 is fixedly connected to both sides of the first connector 61. A first locking strip 64 is fixedly connected to the first connector 61 near the first buckle 63. A second locking strip 65 is engaged on the outside of the first locking strip 64. The second locking strip 65 is fixedly connected to the second connector 62. A second buckle 66 is fixedly connected to the second connector 62 near the second locking strip 65. The first buckle 63 and the second buckle 66 are provided with slots that are compatible with the first locking strip 64 and the second locking strip 65. A bevel is provided at one end of the first locking strip 64 and the second locking strip 65. The second buckle 66 is engaged with the first locking strip 64.

[0025] A sealing ring 7 is provided between the first connector 61 and the second connector 62. The sealing ring 7 is embedded inside the second connector 62. This not only improves the sealing performance of the connection between the first connector 61 and the second connector 62 and prevents water leakage, but also increases the friction at the connection between the first connector 61 and the second connector 62, thereby improving the stability of the device after installation.

[0026] The two directional pipes 2 are arranged in opposite directions, and the internal components of the two directional pipes 2 are also arranged in opposite directions, thus enabling the device to perform both forward drainage and reverse fluid transport under specific conditions.

[0027] In this embodiment: the first connector 61 and the second connector 62 on the water pipe 4 are attached together, and the first buckle 63 on the surface of the first connector 61 and the second buckle 66 on the second connector 62 are perpendicular to each other. Then, the first connector 61 is rotated, which drives the first buckle 63 and the first locking strip 64 to rotate. While the first connector 61 is rotating, it enters through the inclined surface of the second locking strip 65 and engages with the second locking strip 65. One end of the inclined surface of the first locking strip 64 enters the interior of the second buckle 66, thereby engaging the second buckle 66 with the first locking strip 64. Rotating until the second buckle 66 is attached to the first buckle 63, the purpose of quickly connecting the first connector 61 and the second connector 62 can be achieved.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A directional drainage pipe for preventing backflow, comprising two main pipes (1), characterized in that: Two directional pipes (2) are provided between the two main pipes (1). A secondary pipe (3) is fixedly connected to both ends of the two directional pipes (2). The end of the secondary pipe (3) away from the directional pipe (2) is fixedly connected to the main pipe (1). A water pipe (4) is provided at the opposite end of the two main pipes (1). A one-way mechanism (5) to prevent backflow is provided inside the two directional pipes (2). A connection mechanism (6) for quick docking of the device is provided between the water pipe (4) and the main pipe (1).

2. The anti-backflow directional drainage pipe according to claim 1, characterized in that: The one-way mechanism (5) includes a piston (51) disposed inside the directional tube (2). A matching sealing ring (52) is fixedly connected to the directional tube (2) near the piston (51). A slide rod (53) is fixedly connected to the center of the end of the piston (51) away from the sealing ring (52). A limiting plate (54) is fixedly connected to the end of the slide rod (53) away from the piston (51). The slide rod (53) is slidably connected to the directional tube (2) near the limiting plate (54) through an elastic element (55).

3. A directional drainage pipe for preventing backflow according to claim 2, characterized in that: The elastic element (55) includes a fixed sleeve (551) sleeved on the outer surface of the slide rod (53). An annular plate (552) is fixedly connected to the outer surface of the fixed sleeve (551). Connecting rods (553) are fixedly connected to the four corners of the annular plate (552). The end of the connecting rod (553) away from the annular plate (552) is fixedly connected to the directional tube (2). A spring (554) is provided between the annular plate (552) and the piston (51). The spring (554) is sleeved on the outer surface of the slide rod (53).

4. A directional drainage pipe for preventing backflow according to claim 1, characterized in that: The connecting mechanism (6) includes a first connector (61) fixedly installed at one end of the water pipe (4). The first connector (61) is provided with a matching second connector (62) at one end near the main pipe (1). The two second connectors (62) are fixedly connected to the main pipe (1) respectively. The first connector (61) is fixedly connected to both sides with a first buckle (63). The first connector (61) is fixedly connected to a first clip (64) near the first buckle (63). The first clip (64) is engaged with a second clip (65) on the outside of the first clip (64). The second clip (65) is fixedly connected to the second connector (62). The second connector (62) is fixedly connected to a second buckle (66) near the second clip (65). The second buckle (66) is engaged with the first clip (64).

5. A directional drainage pipe for preventing backflow according to claim 4, characterized in that: A sealing ring (7) is provided between the first connector (61) and the second connector (62), and the sealing ring (7) is respectively embedded in the interior of the second connector (62).

6. A directional drainage pipe for preventing backflow according to claim 1, characterized in that: The two directional tubes (2) are set in opposite directions.

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