Quick connection type H pipe

Abstract

The utility model relates to the field of pipeline connecting devices, in particular to a quick connection type H pipe which is composed of a first vertical pipe, a second vertical pipe and an arc-shaped branch pipe, one end of the first vertical pipe and one end of the second vertical pipe are provided with flexible telescopic structures and can be flexibly connected with external pipe fittings, and the other ends of the first vertical pipe and the second vertical pipe are connected with the external pipe fittings in a bell and spigot joint mode. And meanwhile, the device is also used for length compensation required by installation, adjustment and the like of the pipeline. The quick connector is used for quick and convenient connection of flexible socket and socket bonding vertical pipes or pipe fittings.

Description

Technical Field

[0001] The utility model relates to a pipeline connecting device, and more particularly to a quick-connect H-type pipe. Background Art

[0002] Indoor sewage and wastewater discharge in high-rise buildings usually adopts a double vertical pipe drainage method made of PVC-U material; one vertical pipe is for drainage and the other vertical pipe is for exhaust. Ordinary H-tubes are used to connect each floor or every few floors. This achieves the purpose of exhausting and replenishing air when positive and negative air pressure occurs in the drainage vertical pipe, thereby reducing the water seal fluctuation of the water bend in indoor sanitary appliances and pipes, avoiding splashing and suction, and ensuring the effective drainage capacity of the drainage vertical pipe.

[0003] When connecting risers, it is usually necessary to use expansion joints to eliminate pipe installation errors and axial expansion spacing, install pipe clamps to support the gravity of the pipe material, and then connect the H-tube. The pipe connection and fittings process is complex and time-consuming.

[0004] In modern building design, the effectiveness and reliability of drainage systems are crucial. They not only impact the comfort and sanitation of the building's interior environment but also directly affect the building's overall safety and service life. As a core component of a building's drainage system, risers are responsible for quickly and safely discharging wastewater from each floor to the outdoor network. However, during the drainage process, risers often face numerous challenges due to variations in water flow velocity, fluctuations in air pressure within the pipes, and environmental factors both inside and outside the building.

[0005] To ensure the smooth operation of the drainage riser, the system must meet the needs of both drainage and exhaust. During the drainage process, the high-speed flow of water in the pipe will generate a certain negative pressure (the so-called "suction" phenomenon), which will cause the air pressure in the pipe to decrease, thereby affecting the water flow rate and drainage efficiency. At the same time, when the water flow slows down or stops, positive pressure may form in the pipe (the so-called "backsplash" phenomenon), causing sewage to overflow from the pipe interface and pollute the indoor environment. Therefore, the drainage system needs to be equipped with an effective exhaust and air replenishment mechanism to balance the air pressure fluctuations in the pipe to ensure smooth and pollution-free drainage.

[0006] To address these issues, H-tube connections are widely used in existing building drainage systems. The H-tube, also known as a double riser or annular vent pipe, is a special pipe connector shaped like the letter "H" and featuring two separate channels: one for drainage and the other for exhaust or air supply. By connecting the H-tube to the drainage riser, a continuous ventilation loop is created within the pipe, allowing for automatic exhaust and air supply during the drainage process.

[0007] Specifically, when the water flow in the drainage riser accelerates, negative pressure forms within the pipe. At this point, the air supply channel in the H-tube replenishes air to balance pressure fluctuations and prevent suction. Conversely, when the water flow slows or stops, positive pressure may form within the pipe. At this point, the exhaust channel in the H-tube vents excess air out of the pipe to prevent backsplash and overflow. In this way, the H-tube connection technology effectively addresses the potential pressure fluctuations that can occur in the drainage riser during drainage, ensuring the smooth operation of the drainage system.

[0008] Although H-tube connection technology has been widely used in building drainage systems and has achieved remarkable results, its practical application still has some limitations. First, because drainage risers often need to cross multiple floors and connect to multiple sanitary fixtures, the installation and connection process of H-tubes is relatively complex and time-consuming. During installation, it is necessary to accurately measure the pipe length, determine the connection location, and install accessories such as expansion joints to eliminate pipe installation errors and axial expansion gaps. In addition, support structures such as pipe clamps are required to bear the weight of the pipe and ensure the stability of the pipe. These steps not only increase the difficulty and cost of construction, but also may affect the construction schedule and quality.

[0009] Secondly, as buildings continue to grow in height and complexity, the pressure and load on drainage risers are also increasing. Traditional H-tube connection technology struggles to fully meet these requirements, leading to problems such as deformation, rupture, and air leakage over long-term use. Therefore, continuous improvement and innovation of H-tube connection technology is necessary to adapt to the demands of modern buildings. Utility Model Content

[0010] In order to overcome at least one of the defects of the prior art, the present invention provides a quick-connect H-tube.

[0011] The present invention aims to solve the above technical problems at least to a certain extent.

[0012] In order to solve the above technical problems, the technical solutions of the present utility model are as follows:

[0013] A quick-connect H-tube comprises: a first riser, a second riser, and an arc-shaped branch pipe. A flexible telescopic structure is provided at a receiving interface between the second riser and one end of the first riser. The flexible telescopic structure is flexibly connected to an external pipe fitting. The second riser and the first riser are arranged in parallel. Both ends of the arc-shaped branch pipe are respectively connected to the second riser and the first riser.

[0014] Furthermore, the arc-shaped branch pipe is an arc-shaped hollow structure, and the arc-shaped branch pipe is obliquely arranged between the second riser and the first riser.

[0015] Furthermore, the sockets at the other ends of the second riser and the first riser are connected to external pipes in a socket-spigot connection.

[0016] Furthermore, the flexible telescopic structure includes a telescopic joint cover, which is sleeved on the outside of the receiving interface of the second riser and one end of the first riser, and the telescopic joint cover is flexibly connected to the external pipe.

[0017] Furthermore, a sealing ring is provided between the receiving interface and the telescopic joint cover.

[0018] Furthermore, the second riser and the first riser are provided with fixing structures at the upper and lower ends, and the fixing structures are connected to the second riser and the first riser.

[0019] Furthermore, the fixing structure includes a screw, a nut and a connecting rib, the two ends of the connecting rib are respectively connected to the second vertical pipe and the first vertical pipe, a connecting hole is provided on the connecting rib, the screw passes through the connecting hole, and the nut is connected to the thread provided at one end of the screw.

[0020] Furthermore, the fixing structure further includes a gasket, which is arranged between the screw and the nut, and the screw passes through the gasket.

[0021] Furthermore, the other end of the screw is fixed to the wall.

[0022] Furthermore, a center distance coordinate line is provided on the second riser and the first riser, and the center distance coordinate line is set at the center position of the second riser and the first riser in the horizontal direction.

[0023] Compared with the prior art, the beneficial effects of the technical solution of the utility model are:

[0024] The top of the H-tube is equipped with a simple expansion joint cover and sealing ring, forming a flexible and retractable structure that effectively compensates for pipe deformation caused by heat or installation adjustments. Furthermore, connecting ribs with circular holes are located at the top and bottom of the main body. These, combined with locating seats, washers, and nuts, firmly support the riser. Center-to-center distance coordinate lines provide precise guidance for installation, minimizing errors and improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural diagram of the quick-connect H-tube described in the present utility model;

[0026] Figure 2 Schematic diagram of the flexible telescopic structure and fixed structure of the quick-connect H-tube according to this embodiment;

[0027] Figure 3 This is a front view of the quick-connect H-tube described in the present utility model;

[0028] In the figure, 1. ventilation riser; 2. drainage riser; 3. arc-shaped branch pipe; 4. flexible telescopic structure; 5. fixed structure; 43. socket; 41. telescopic joint cover; 42. sealing ring; 51. screw; 511. thread; 54. connecting rib; 541. connecting hole; 52. gasket; 53. nut. DETAILED DESCRIPTION

[0029] The accompanying drawings are for illustrative purposes only and are not to be construed as limiting this patent;

[0030] In order to better illustrate this embodiment, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product size;

[0031] It is understandable to those skilled in the art that some well-known structures and descriptions thereof may be omitted in the drawings.

[0032] The technical solution of the present utility model is further described below with reference to the accompanying drawings and embodiments.

[0033] Example 1

[0034] A quick-connect H-tube, such as Figure 1 As shown, it includes: a first riser 1, a second riser 2 and an arc-shaped branch pipe 3. A flexible telescopic structure 4 is provided at the receiving interface of one end of the second riser 2 and the first riser 1. The flexible telescopic structure 4 is flexibly connected to the external pipe fitting. The second riser 2 and the first riser 1 are arranged in parallel, and the two ends of the arc-shaped branch pipe 3 are respectively connected to the second riser 2 and the first riser 1.

[0035] In practice, the quick-connect H-type pipe includes a first riser and a second riser. The second riser is a drainage riser, and the first riser is a ventilation riser. These two pipes are the main channels of the drainage system, responsible for discharging wastewater and providing ventilation, respectively, to ensure the smooth operation of the drainage system. The two sockets at the upper ends of the drainage and ventilation risers 1, when mated with a flexible telescopic structure 4, quickly connect to the pipe or fitting. The upper socket has a telescopic function that can compensate for the expansion and contraction deformation caused by heat in the absorption pipe. It also serves to compensate for the pipe length required for installation and adjustment.

[0036] Example 2

[0037] This embodiment, based on the first embodiment, further discloses the following contents:

[0038] The arc-shaped branch pipe 3 is an arc-shaped hollow structure, and the arc-shaped branch pipe 3 is arranged obliquely between the second riser 2 and the first riser 1 .

[0039] The cross-section of the curved branch pipe 3 gradually expands along its length. This key component, connecting the drainage riser 2 and the ventilation riser 1, features a curved hollow structure and is positioned obliquely between the two pipes. This effectively balances the mixed steam and water flow, preventing noise pollution caused by water impact, while ensuring stable operation of the drainage system under various operating conditions. The gradual expansion of the cross-section of the curved branch pipe 3 along its length helps optimize fluid dynamics, reduce resistance, and improve drainage efficiency.

[0040] The sockets at the other ends of the second riser 2 and the first riser 1 are connected to external pipe fittings in a socket-and-spigot manner. Figure 2 As shown, the flexible telescopic structure 4 includes a telescopic joint cover 41, which is sleeved on the outside of the receiving interface of the second riser 2 and one end of the first riser 1, and the telescopic joint cover 41 is flexibly connected to the external pipe.

[0041] The upper end of the main body is matched with the expansion joint cover 41 and the sealing ring 42 to form a flexible expansion structure 4, which can compensate for the expansion and contraction deformation caused by the heat of the absorption pipe, and is also used for the length compensation required for the installation and adjustment of the pipe.

[0042] The internal structure of the telescopic cover 41 typically includes one or more bellows or elastic elements, which deform when subjected to external forces to absorb displacement. To ensure a tight seal, the contact surface of the telescopic cover 41 is machined into a high-precision sealing groove and equipped with a corresponding sealing ring 42.

[0043] A sealing ring 42 that cooperates with each other is provided between the receiving port 43 and the telescopic joint cover 41 .

[0044] In practice, the sealing ring 42 is a key component for achieving sealing at device connections. It is typically made of an elastic material such as rubber, silicone, or polytetrafluoroethylene (PTFE). These materials offer excellent sealing, corrosion resistance, wear resistance, and high-temperature resistance, enabling them to maintain a stable seal in a variety of harsh environments.

[0045] The structural design of the sealing ring 42 usually includes one or more sealing lips, a sealing surface and a supporting structure. The sealing lip is used to fit tightly with the sealing surface of the connecting component to form an effective sealing barrier; the sealing surface provides sufficient contact area and contact pressure to ensure the sealing effect; the supporting structure is used to maintain the shape and stability of the sealing ring 42. When installing the sealing ring 42, it is necessary to ensure the cleanliness and flatness of the sealing groove and the sealing surface to avoid impurities or defects affecting the sealing effect. At the same time, it is necessary to apply lubricant appropriately during the installation process to reduce friction and wear. During the operation of the equipment, the wear and aging of the sealing ring 42 should be checked regularly, and it should be replaced in time to ensure the stability of the sealing performance.

[0046] When the pipeline expands and contracts due to temperature fluctuations, installation adjustments, or external loads, the relative position between the socket 43 and the expansion joint cover 41 will change. Thanks to the presence of the sealing ring 42, this relative position change does not cause media leakage. Instead, the sealing ring 42 deforms with the relative movement of the socket 43 and the expansion joint cover 41, maintaining a tight seal.

[0047] At the same time, the material selection of the socket 43 and the expansion joint cover 41 also ensures that they can withstand the expansion and contraction deformation of the pipeline within a certain range. This design enables the flexible expansion structure 4 to protect the pipeline system from damage while improving the stability and durability of the system.

[0048] The application of the flexible telescopic structure 4 in the quick-connect H-tube brings the following beneficial effects:

[0049] Improve installation flexibility: The flexible telescopic structure 4 can compensate for and absorb the expansion and contraction deformation of the pipeline, making the installation of the pipeline system more flexible and convenient.

[0050] Enhance system stability: By absorbing the expansion and contraction deformation of the pipeline, the flexible expansion and contraction structure 4 can reduce the vibration and noise of the pipeline system, thereby improving the stability and operating efficiency of the system.

[0051] Prolong service life: Since the flexible telescopic structure 4 has good sealing and corrosion resistance, it can effectively prevent medium leakage and pipeline corrosion, thereby extending the service life of the pipeline system.

[0052] Reduced maintenance costs: The quick-connect H-tube with a flexible telescopic structure 4 reduces the repair and replacement costs caused by pipeline damage.

[0053] The second riser 2 and the first riser 1 are provided with fixing structures 5 at the upper and lower ends thereof, and the fixing structures 5 are connected to the second riser 2 and the first riser 1 .

[0054] Example 3

[0055] This embodiment, based on Embodiments 1 and 2, further discloses the following contents:

[0056] The fixing structure 5 includes a screw 51, a nut 53, and a connecting rib 54. The two ends of the connecting rib 54 are respectively connected to the second vertical pipe 2 and the first vertical pipe 1. A connecting hole 541 is provided on the connecting rib 54. The screw 51 passes through the connecting hole 541. The nut 53 is connected to the thread 511 provided at one end of the screw 51.

[0057] To ensure the stability and safety of the quick-connect H-tube after installation, fixing structures 5 are provided at the upper and lower ends of the drainage riser 2 and the ventilation riser 1. By adjusting the tightness of the gasket 52 and nut 53, the risers can be effectively fixed and supported.

[0058] The fixing structure 5 further includes a washer 52 . The washer 52 is disposed between the screw rod 51 and the nut 53 . The screw rod 51 passes through the washer 52 .

[0059] The other end of the screw rod 51 is fixed to the wall.

[0060] Nut 53 and gasket 52, as auxiliary components of the connecting parts, play an important role in equipment connection. Nut 53 is used to tighten the connector and provide sufficient preload to ensure the stability and sealing of the connection; gasket 52 is used to increase the contact area, distribute pressure, and prevent leakage. The material selection of nut 53 and gasket 52 also needs to consider the specific application scenario. Nut 53 generally needs to have high hardness and strength to withstand the load during the tightening process, while gasket 52 needs to have good sealing and corrosion resistance to ensure long-term stability.

[0061] When installing the nut 53 and gasket 52, it is necessary to ensure the cleanliness and flatness of the connecting parts to prevent impurities or defects from affecting the tightening effect and sealing performance. At the same time, when tightening the nut 53, it is necessary to operate according to the specified torque to ensure sufficient pre-tightening force. During the operation of the equipment, it is necessary to regularly check the tightening status and wear of the nut and gasket 52, and adjust and replace them in time to ensure the stability and sealing of the connection.

[0062] One end of the screw rod 51 is provided with an external thread, and the inner side of the nut 53 is provided with an internal thread. The external thread of the screw rod 51 and the internal thread of the nut 53 are matched and connected with each other, and the other end of the screw rod 51 is fixed to the wall.

[0063] The internal thread is connected to the explosive screw thread and fixed to the wall, and the fixing structure 5 plays the role of supporting the vertical pipe.

[0064] Example 4

[0065] This embodiment further discloses the following contents based on Embodiments 1, 2, and 3:

[0066] like Figure 3 As shown, a center distance coordinate line is provided on the drainage riser 2 and the ventilation riser 1 , and the center distance coordinate line is set at the center position of the drainage riser 2 and the ventilation riser 1 in the horizontal direction.

[0067] To facilitate positioning and alignment during installation, the Quick-Connect H-Pipe features center-to-center coordinate lines at the horizontal centers of the drain riser 2 and vent riser 1. This design allows installers to quickly and accurately determine the spacing between the risers by measuring the center coordinate distances, reducing installation errors and improving efficiency.

[0068] There is a center distance coordinate line on the upper end of the main body. By measuring the center coordinate distance, the arrangement spacing of the risers can be determined. The verticality of the upper and lower risers can also be located to reduce installation errors and improve installation efficiency.

[0069] During the specific implementation process, when installing and using, the quick-connect integrated H-tube first receives the lower end vertical pipe, and then connects the upper end vertical pipe as a length compensation. After the connection, the external thread end of the positioning seat is inserted into the round hole in the middle of the main connecting rib 54, and the gasket 52 is put on and the nut thread is locked. The internal thread end is connected to the explosive screw thread and fixed to the wall; it plays the role of supporting the vertical pipe.

[0070] The same or similar reference numerals correspond to the same or similar components;

[0071] The terms used in the drawings to describe positional relationships are for illustrative purposes only and should not be construed as limiting this patent;

[0072] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. A person skilled in the art will be able to make other variations or modifications based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A quick-connect H-tube, characterized in that: include: A first riser (1), a second riser (2) and an arc-shaped branch pipe (3); a flexible telescopic structure (4) is provided at the receiving interface of one end of the second riser (2) and the first riser (1); the flexible telescopic structure (4) is flexibly connected to an external pipe; the second riser (2) and the first riser (1) are arranged in parallel; and the two ends of the arc-shaped branch pipe (3) are respectively connected to the second riser (2) and the first riser (1).

2. The quick-connect H-tube according to claim 1, characterized in that: The arc-shaped branch pipe (3) is an arc-shaped hollow structure, and the arc-shaped branch pipe (3) is arranged obliquely between the second riser (2) and the first riser (1).

3. The quick-connect H-tube according to claim 2, characterized in that: The sockets at the other ends of the second riser (2) and the first riser (1) are connected to external pipe fittings in a socket-and-spigot manner.

4. The quick-connect H-tube according to claim 1, characterized in that: The flexible telescopic structure (4) comprises a telescopic joint cover (41), which is sleeved on the outside of the receiving interface at one end of the second vertical pipe (2) and the first vertical pipe (1), and the telescopic joint cover (41) is flexibly connected to the external pipe.

5. The quick-connect H-tube according to claim 4, characterized in that: A sealing ring (42) is provided between the receiving interface and the telescopic joint cover (41).

6. The quick-connect H-tube according to claim 3, characterized in that: The second riser (2) and the first riser (1) are provided with fixing structures (5) at the upper and lower ends, and the fixing structures (5) are connected to the second riser (2) and the first riser (1).

7. The quick-connect H-tube according to claim 6, characterized in that: The fixing structure (5) comprises a screw rod (51), a nut (53) and a connecting rib (54); the two ends of the connecting rib (54) are respectively connected to the second vertical pipe (2) and the first vertical pipe (1); a connecting hole (541) is provided on the connecting rib (54); the screw rod (51) passes through the connecting hole (541); and the nut (53) is connected to a thread (511) provided at one end of the screw rod (51).

8. The quick-connect H-tube according to claim 7, characterized in that: The fixing structure (5) further comprises a gasket (52), wherein the gasket (52) is arranged between the screw rod (51) and the nut (53), and the screw rod (51) passes through the gasket (52).

9. The quick-connect H-tube according to claim 8, characterized in that: The other end of the screw rod (51) is fixed to the wall.

10. The quick-connect H-tube according to claim 7, characterized in that: The second vertical pipe (2) and the first vertical pipe (1) are provided with a center distance coordinate line, and the center distance coordinate line is set at the center position of the second vertical pipe (2) and the first vertical pipe (1) in the horizontal direction.

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