Pipe coupling and sewerage system

Abstract

The application discloses a pipeline connecting piece and a blowdown system, which comprise at least one flow guide piece, at least one air guide piece and at least one air vent unit. The flow guide piece is provided with a hollow flow guide cavity, and a first through hole communicating with the flow guide cavity is formed in the side wall of the flow guide piece. The air guide piece is arranged in parallel with the flow guide piece, and the air guide piece is provided with a hollow air guide cavity, and a second through hole communicating with the air guide cavity is formed in the side wall of the air guide piece. A first connecting part is mounted on the flow guide piece and corresponds to the first through hole, and a second connecting part is mounted on the air guide piece and corresponds to the second through hole. The first connecting part and the second connecting part are slidingly connected to realize the adjustment of the axial distance between the flow guide piece and the air guide piece. An air guide channel communicating with the first through hole and the second through hole is formed between the first connecting part and the second connecting part. The axial distance between the blowdown pipe and the exhaust pipe of the pipeline connecting piece in the prior art cannot be adjusted, and the pipeline connecting piece is inconvenient to install in a narrow shaft.

Description

Technical Field

[0001] This invention relates to the field of sewage pipe technology, specifically to a pipe connector and a sewage system. Background Technology

[0002] In building drainage systems, pipe connectors are a widely used and highly efficient drainage design. These connectors play a crucial role in regulation and balancing. The basic principle is to connect individual drainage risers on specific floors via horizontal branch pipes, creating a flow pattern of "upper drainage, lower flow, and air-water separation." The core function of this connector is to release positive pressure gas from the lower-level pipes to the upper-level negative pressure area, or introduce fresh air to replenish the negative pressure, when a large volume of water is generated from the upper floor drainage system. This effectively eliminates drastic pressure fluctuations within the pipes. This mechanism directly protects the water seals of the traps on each floor from being damaged by suction or positive pressure splashing, eliminating the risk of sewer odors, biogas, and pathogens flowing back into the rooms, significantly improving building hygiene and safety.

[0003] The existing patent document with patent number CN221974630U discloses an H-pipe with a joint. In this patent document, the axial distance between the first and second risers of the H-pipe body cannot be adjusted. However, with the increasing sophistication of modern building space design, drainage manholes are often compressed to their limit size, posing a severe challenge to the construction and installation of pipe fittings. Most existing pipe fittings are rigid integral structures with fixed and non-adjustable specifications and dimensions. This design leads to great limitations in the installation process. When the manhole space is small, there is a slight deviation in the pipe axis, or there is interference with other pipelines, the fixed-size pipe fittings cannot be fine-tuned to adapt to the complex installation environment. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned technical deficiencies and provide a pipe connector and a sewage system, which solves the problem that the axial distance between the sewage pipe and the exhaust pipe of the existing pipe connector is not adjustable, making it inconvenient to install the pipe connector in narrow shafts.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: In a first aspect, the present invention provides a pipe connector, comprising: At least one flow guide is provided, the flow guide is provided with a hollow flow guide cavity, and a first through hole is provided on its side wall, the first through hole penetrates the side wall and communicates with the flow guide cavity; An air guide is provided, which is arranged parallel to and opposite to the flow guide. The air guide is provided with a hollow air guide cavity and at least one second through hole is provided on its side wall. The second through hole penetrates the side wall and communicates with the air guide cavity. At least one ventilation unit includes a first connecting part and a second connecting part. The first connecting part is installed on the flow guide and corresponds to the first through hole. The second connecting part is installed on the air guide and corresponds to the second through hole. The first connecting part and the second connecting part are slidably inserted to achieve adjustable axial spacing between the flow guide and the air guide. An air guide channel is formed between the first connecting part and the second connecting part, communicating with the first through hole and the second through hole. The first through hole and the second through hole are staggered along the height direction, and the first through hole is located below the second through hole.

[0006] In one embodiment, the flow guide is connected to the air guide via a ventilation unit, which is installed at an angle or horizontally between the flow guide and the air guide.

[0007] In one embodiment, the two flow guides are respectively connected to the air guide via the two air venting units, and the two air venting units are installed at an angle or in a horizontal direction between the flow guide and the air guide.

[0008] In one embodiment, the first connecting part is a first tube body, which is installed on the flow guide, and the axis of the first tube body forms a non-parallel angle with the axis of the flow guide. The second connecting part is a second tube body, which is installed on the air guide component. The axis of the second tube body and the axis of the air guide component form a non-parallel angle. The second tube is slidably inserted into the first tube, and the first tube and the second tube together form the air guiding channel, wherein the cross-sectional area of ​​the air guiding channel is larger than the cross-sectional area of ​​the flow guiding cavity and the air guiding cavity.

[0009] In one embodiment, the first tube extends obliquely upward at a preset angle and is connected to the flow guide, and the second tube extends obliquely downward at a preset angle and is connected to the air guide.

[0010] In one embodiment, the first tube extends horizontally and is connected to the flow guide, and the second tube extends horizontally and is connected to the air guide.

[0011] In one embodiment, the cross-section of the air guide channel formed between the first tube and the second tube is generally circular or square.

[0012] In one embodiment, the sidewall of the flow guide is provided with two protrusions, which penetrate the sidewall and communicate with the flow guide cavity. The two protrusions are located above the first through hole. A sealing member for opening and closing the opening is detachably installed on each of the two protrusions. The sealing member has an extension end, which is inserted into the protrusion and fills the internal space of the protrusion.

[0013] In one embodiment, it further includes two expansion joints, which are respectively disposed at the ends of the flow guide and the air guide; The expansion joint includes a locking component and a connecting pipe; Both the flow guide and the air guide have circumferentially threaded sections on their outer peripheral walls at the ends. The locking component is provided with an internal thread section that is adapted to the external thread section, and a locking hole is provided through it along the axial direction. The lower end of the locking hole has a tapered surface structure with a gradually decreasing inner diameter. The two connecting tubes are respectively inserted into the flow guide cavity and the air guide cavity, and the connecting tubes pass through the locking hole of the locking member. The locking member is locked by the threaded engagement of the internal thread section and the external thread section to lock and fix the connecting tubes.

[0014] Secondly, this solution also provides a sewage system, including the pipe connector as described in any one of the preceding claims, wherein the sewage pipeline includes at least one sewage riser and an exhaust riser; The sewage riser consists of a first sewage pipe section and a second sewage pipe section arranged coaxially along the vertical axis, and the two ends of the guide member are respectively connected to the first sewage pipe section and the second sewage pipe section; The exhaust riser consists of a first exhaust pipe section and a second exhaust pipe section arranged coaxially along the vertical axis, and the two ends of the air guide are respectively connected to the first exhaust pipe section and the second exhaust pipe section.

[0015] Compared with the prior art, the present invention provides a pipe connector and a sewage discharge system. The flow guide has a hollow flow guide cavity and a first through hole in its side wall, which penetrates the side wall and connects to the flow guide cavity. An air guide is arranged parallel to the flow guide, and has a hollow air guide cavity and at least one second through hole in its side wall, which penetrates the side wall and connects to the air guide cavity. A first connecting part is installed on the flow guide and corresponds to the first through hole, and a second connecting part is installed on the air guide and corresponds to the second through hole. The first and second connecting parts are slidably inserted to achieve adjustable axial spacing between the flow guide and the air guide. For shafts with limited installation space, by reducing the axial spacing between the flow guide and the air guide, the pipe connector can be installed in narrow shafts, saving installation space and improving its applicability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the oblique H-shaped pipe connector provided by the present invention; Figure 2 This is a cross-sectional view of the oblique H-shaped pipe connector provided by the present invention; Figure 3 yes Figure 2 Enlarged view of region A in the middle; Figure 4 This is a structural schematic diagram of the H-shaped pipe connector provided by the present invention; Figure 5 yes Figure 4 A sectional view of the H-shaped pipe fitting provided in the image; Figure 6 This is a structural schematic diagram of the M-shaped pipe connector provided by the present invention; Figure 7 This is a schematic diagram of the structure of the double H-shaped pipe connector provided by the present invention; Figure 8 This is a schematic diagram illustrating the usage of the inclined H-shaped pipe connector provided by the present invention in a sewage pipeline; Figure 9 The experimental test principle diagram of the inclined H-shaped pipe connector provided by this invention. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0018] To address the technical problem in existing pipe connectors where the axial spacing between the drain pipe and exhaust pipe is not adjustable, making installation in narrow shafts inconvenient, this invention provides a pipe connector and a drainage system that allows adjustment of the axial spacing between the drain pipe and exhaust pipe, ensuring the pipe connector is suitable for installation in narrow shafts and improving its applicability.

[0019] Please see Figures 1-9 , Figures 1-9A pipe connector according to one embodiment of the present invention includes at least one flow guide 1, an air guide 2, and at least one ventilation unit 3. The flow guide 1 has a hollow flow guide cavity 1a and a first through hole 1b formed in its side wall, the first through hole 1b penetrating the side wall and communicating with the flow guide cavity 1a. The air guide 2 is arranged parallel to the flow guide 1, and the air guide 2 has a hollow air guide cavity 2a and at least one second through hole 2b formed in its side wall, the second through hole 2b penetrating the side wall and communicating with the air guide cavity 2a. The ventilation unit 3 includes a first connecting part 31 and a second connecting part 32. The first connecting part 31 is installed on the flow guide 1 and corresponds to the first through hole 1b, and the second connecting part 32 is installed on the air guide 2 and corresponds to the second through hole 2b. The first connecting part 31 and the second connecting part 32 are slidably inserted to achieve adjustable axial spacing between the flow guide 1 and the air guide 2. An air guide channel is formed between the first connecting part 31 and the second connecting part 32, which communicates with the first through hole 1b and the second through hole 2b. The first through hole and the second through hole are staggered along the height direction, and the first through hole 1b is located below the second through hole 2b.

[0020] In one embodiment, the flow guide 1 is connected to the air guide 2 via a ventilation unit 3. The ventilation unit 3 is installed at an angle or horizontally between the flow guide 1 and the air guide 2 to form an H-shaped or oblique H-shaped pipe connector. The two flow guides 1 are respectively connected to the air guide 2 via two ventilation units 3. The two ventilation units 3 are both installed at an angle or horizontally between the flow guide 1 and the air guide 2. The two flow guides 1 are respectively connected to the air guide 2 via two ventilation units 3 to form an M-shaped or double H-shaped pipe connector.

[0021] It should be noted that, in this invention, for ease of understanding and description, a flow guide 1 is connected to an air guide 2 through an air venting unit 3, and a slanted H-shaped pipe connector is constructed as an example for detailed explanation.

[0022] It should be understood that the above description of the oblique H-shaped pipe connector, which is constructed by "only one flow guide connected to the air guide through a single air venting unit," is merely a preferred embodiment of the present invention. Those skilled in the art should recognize that the oblique H-shaped structure is simply a visual representation of this connection method in a specific spatial layout. In reality, as long as the connection logic of "one flow guide connected to a single air venting unit and air guide" is satisfied, its specific shape can be adaptively modified according to actual working conditions (such as pipe routing and space constraints). Therefore, regardless of the variant form of the pipe connector in actual application, as long as its core connection relationship does not depart from the concept of the present invention, it should fall within the protection scope of the present invention.

[0023] It should be noted that due to the thermal expansion and contraction of pipe materials, an expansion joint is generally required on each floor of the pipes. At the same time, to prevent blockages caused by towels, hair, etc., a riser inspection port needs to be installed on each floor. The existing patent application document with patent application number CN217208302U discloses a double-sided switchable H-pipe with two inspection ports on the sewage pipe, which solves the problem of insufficient space for pipe well installation. It can be rotated from the reverse side to the front side for installation. However, the structural details of the H-pipe are not described, and the entire system still requires expansion joints, which increases the cost of pipe materials and labor.

[0024] Based on the above solutions, such as Figures 1-3 As shown, the ends of the flow guide 1 and the air guide 2 are respectively provided with telescopic joints 4, wherein the telescopic joint 4 includes a locking member 41 and a connecting pipe 42; the outer peripheral walls of the ends of the flow guide 1 and the air guide 2 are circumferentially provided with external thread sections; the locking member 41 is provided with an internal thread section that matches the external thread section, and a locking hole 41a is provided through it along the axial direction, and the lower end of the locking hole 41a has a tapered surface structure with a gradually decreasing inner diameter; the two connecting pipes 42 are respectively inserted into the flow guide cavity 1a and the air guide cavity 2a, and the connecting pipes 42 pass through the locking hole 41a of the locking member 41. The locking member 41 is locked by the threaded engagement of the internal thread section and the external thread section to lock and fix the connecting pipes 42.

[0025] It should be noted that sewage systems (especially those made of PVC / UPVC) are sensitive to temperature changes. High temperatures in summer or low temperatures in winter can cause significant linear expansion or contraction of the pipes. Expansion joint 4 can freely expand and contract (e.g., ±30mm to ±50mm). It absorbs the length changes caused by temperature differences, avoids the accumulation of huge internal stress caused by rigid connections, and thus prevents pipe joints from cracking, bursting, or flange deformation and leakage. In addition, expansion joint 4 has an axial adjustment function, allowing for fine adjustments during installation.

[0026] It should be noted that, as Figure 2 As shown, based on the above scheme, the first through hole 1b and the second through hole 2b are staggered with each other along the height direction, and the first through hole 1b is located below the second through hole 2b, that is, the lowest point 2b-1 of the second through hole 2b is located above the highest point 1b-1 of the first through hole 1b, so that an inclined air guiding channel is formed between the first through hole 1b and the second through hole 2b. This inclined air guiding channel can prevent sewage from flowing into the exhaust riser.

[0027] Among them, such as Figure 2As shown, the first through hole 1b is located below the second through hole 2b, that is, there is a height difference H between the top of the first through hole 1b and the bottom of the second through hole 2b. By setting the first through hole 1b and the second through hole 2b to be staggered in the vertical direction, it can be avoided that when the exhaust riser does not provide enough air to the sewage riser, a negative pressure will be formed at the first through hole 1b, causing the sewage in the sewage riser to flow into the exhaust riser.

[0028] It should be noted that, in one embodiment, the flow guide 1 is a flow guide circular tube with a hollow flow guide cavity 1a inside, and the air guide 2 is an air guide circular tube with a hollow air guide cavity 2a inside.

[0029] Specifically, the first connecting part 31 is a first tube body, which is installed on the flow guide 1. The axis of the first tube body and the axis of the flow guide 1 form a non-parallel angle. The second connecting part 32 is a second tube body, which is installed on the air guide 2. The axis of the second tube body and the axis of the air guide 2 form a non-parallel angle. The second tube body is slidably inserted into the first tube body. The first tube body and the second tube body together form an air guide channel. The first through hole 1b and the second through hole 2b have the same cross-sectional area. The flow guide cavity 1a and the air guide cavity 2a have the same cross-sectional area. The cross-sectional area of ​​the first through hole 1b and the second through hole 2b is greater than the cross-sectional area of ​​the flow guide cavity 1a and the air guide cavity 2a. The cross-sectional area of ​​the air guide channel is greater than the cross-sectional area of ​​the first through hole 1b and the second through hole 2b.

[0030] Specifically, the cross-sectional area of ​​the first through hole 1b is 8562 mm². 2 The cross-sectional area of ​​the second through hole 2b is 9556 mm². 2 The cross-sectional area of ​​the air guide channel is 8648 mm². 2 The cross-sectional area of ​​the flow guiding cavity 1a and the air guiding cavity 2a is 8430 mm². 2 The cross-sectional areas of the first through hole 1b and the second through hole 2b are larger than those of the flow guide cavity 1a and the air guide cavity 2a, and the cross-sectional area of ​​the air guide channel is also larger than that of the flow guide cavity 1a and the air guide cavity 2a. According to the principle of fluid mechanics, the larger the cross-sectional area of ​​the pipe, the smaller the resistance when air passes through. Designing the cross-sectional area of ​​the air guide channel to be larger than that of the flow guide cavity 1a and the air guide cavity 2a can greatly reduce the airflow resistance. When the air pressure in the flow guide cavity 1a fluctuates violently, the air can be instantly replenished or released through the air guide cavity 2a to quickly balance the pressure and prevent the water seal from being damaged or the drainage from being obstructed.

[0031] In the first embodiment, the first pipe extends obliquely upward at a preset angle and is connected to the flow guide 1, and the second pipe extends obliquely downward at a preset angle and is connected to the air guide 2. It should be noted that the angle between the axis of the first pipe and the axis of the flow guide 1 is 30°-42°, and the angle between the axis of the second pipe and the axis of the air guide 2 is 30°-42°. Preferably, the angle between the axis of the first pipe and the axis of the flow guide 1 is 41°, and the angle between the axis of the second pipe and the axis of the air guide 2 is 41°. It can be understood that the 41° oblique connection provides the smoothest "air replenishment channel" for air, ensuring that air can be quickly replenished through the air guide channel at the moment of drainage, maintaining stable air pressure.

[0032] Specifically, the design that the angle between the axis of the first pipe body and the axis of the guide member 1 is 41° and the angle between the axis of the second pipe body and the axis of the air guide member 2 is 41° can ensure that there is a height difference between the first through hole 1b and the second through hole 2b, so as to prevent sewage in the guide cavity 1a from flowing into the guide cavity 1a; and can also prevent the first pipe body and the second pipe body from getting stuck when sliding adjustment.

[0033] In the second embodiment, the first tube extends horizontally and is connected to the flow guide 1, that is, the axial angle between the first tube and the flow guide 1 is 90°, and the second tube extends horizontally and is connected to the air guide 2, that is, the axial angle between the second tube and the air guide 2 is 90°.

[0034] It should be noted that, as Figure 5 As shown, when the first tube extends horizontally and is connected to the guide member 1, a baffle 311 is installed obliquely inside the first tube. The baffle 311 corresponds to the first through hole 1b. When the first tube is inserted into the second tube, the baffle 311 can form a reverse flow slope towards the first through hole 1b in the air guide channel. This allows the excrement to generate a downward force towards the first through hole 1b under its own weight, thus preventing the excrement from accumulating in the air guide channel.

[0035] It should be noted that, in one embodiment, the first tube and the second tube are slidably inserted into each other, and the first tube and the second tube can be sealed and fixed by resin adhesive, thereby improving the sealing performance at the connection between the first tube and the second tube.

[0036] It should be noted that, in one embodiment, the cross-section of the air guide channel formed between the first tube and the second tube is generally circular or square; preferably, both the first tube and the second tube are made of square tubing, and the cross-section of the air guide channel is generally square.

[0037] In this specific embodiment, such as Figure 1 and Figure 2As shown, the sidewall of the flow guide 1 is provided with two protrusions 11, which respectively form two inspection ports. The inspection ports can be circular or square. The two protrusions 11 penetrate their sidewalls and connect to the flow guide cavity 1a. The two protrusions 11 are located above the first through hole 1b. Both protrusions 11 are detachably equipped with sealing members 12 for opening and closing their openings. It can be understood that after the inclined H-shaped pipe connector is installed in the well, there can always be an inspection port facing the outside of the well.

[0038] Based on the above solution, in one embodiment, the sealing member 12 has an extension end, which is inserted into the protrusion 11 and fills the internal space of the protrusion 11. It is understood that, due to the very loud water flow and gas flow noise in the drainage riser, especially the frequent airflow exchange in the inclined H-shaped pipe connector, the sealing member is prone to high-frequency whistling or low-frequency resonance due to airflow impact. By inserting the extension end into the protrusion 11 and filling the internal space of the protrusion 11, and the end face shape of the extension end matching the curvature of the inner wall of the guide member 1, the sealing member can effectively block these noises. The inner surface of the guide 1 after the end face of the extension end is sealed is repaired and restored, so that the surface in the sealed area is smooth and consistent with the inner surface of the original pipe, realizing the dual restoration of structural integrity and fluid flowability, avoiding the adhesion of pollutants in the pipe and reducing odor, and ensuring that the curvature of the extension end face fits the inner wall of the pipe to more than 99%; in addition, the extension end is usually made of soft material (such as EPDM rubber), or its structure itself can absorb sound wave vibration, playing a role similar to a "silencer", significantly reducing the transmission of noise during drainage.

[0039] In actual use, such as Figure 8 As shown, the inclined H-shaped pipe connector is installed in the sewage system 5. The sewage system 5 includes a sewage riser 51 and an exhaust riser 52. The sewage riser 51 consists of a first sewage pipe section 511 and a second sewage pipe section 512 arranged coaxially along the vertical direction. The two ends of the guide member 1 are respectively connected to the first sewage pipe section 511 and the second sewage pipe section 512. The exhaust riser 52 consists of a first exhaust pipe section 521 and a second exhaust pipe section 522 arranged coaxially along the vertical direction. The two ends of the air guide member 2 are respectively connected to the first exhaust pipe section 521 and the second exhaust pipe section 522. During the drainage process, when a negative pressure is generated in the sewage riser 51, air can be replenished from the exhaust riser 52 through the air guide member 2. When a positive pressure is generated, excess gas can be discharged into the exhaust riser 52 through the air guide member 2 to ensure that the air pressure in the sewage riser 51 is stable.

[0040] It should be noted that, as Figure 8As shown, in the prior art, when installing a traditional H-pipe D, a telescopic adjustment component 6 and an inspection port 7 are respectively installed on the first sewage pipe section 511 and the second sewage pipe section 512 at both ends of the guide member 1. A telescopic adjustment component 6 and an inspection port 7 are also installed on the first exhaust pipe section 521 and the second exhaust pipe section 522 at both ends of the air guide member 2. It can be understood that when installing the telescopic adjustment component 6 and the inspection port 7 on the first sewage pipe section 511, the second sewage pipe section 512, the first exhaust pipe section 521 and the second exhaust pipe section 522, it is necessary to cut a long pipe multiple times to cut the long pipe into multiple short pipes. The telescopic adjustment component 6 is connected between two short pipes to form the first sewage pipe section 511 or the first exhaust pipe section 521, and the inspection port 7 is connected between two short pipes to form the second sewage pipe section 512 or the second exhaust pipe section 522.

[0041] In this invention, the inclined H-shaped pipe connector is installed between two floors, typically with a floor height of 3m. Based on the set length of the inclined H-shaped pipe connector, fixed-length first sewage pipe section 511, second sewage pipe section 512, first exhaust pipe section 521, and exhaust pipe section 522 can be produced. During on-site installation, the first sewage pipe section 511 and the first exhaust pipe section 521 are connected to one end of the inclined H-shaped pipe connector via the two connecting pipes 42 of the two expansion joints 4, respectively. The second sewage pipe section 512 and the exhaust pipe section 522 are connected to the other end of the inclined H-shaped pipe connector. This eliminates the need for operators to cut long pipes multiple times during on-site installation, improving the installation efficiency of the sewage pipe and avoiding excessive waste material.

[0042] In this invention, the inclined H-shaped tube of this scheme is also compared with the traditional H-tube D through experiments.

[0043] Specifically, such as Figure 9 As shown, a conventional H-pipe D or the inclined H-shaped pipe of this scheme is installed between the sewage riser 51 and the exhaust riser 52, and a T-fitting B is installed on the sewage riser 51. The T-fitting B is located above the pipe to be tested, and a flow meter C is installed at the liquid inlet of the T-fitting B.

[0044] Specifically, this test scheme checks whether the air pipe of the inclined H-shaped pipe (110x75x110) will cross-contaminate when the sewage flow rate of sewage riser 51 is 4.5L / s, and whether the air pipe of the traditional H-pipe D (110x75x110) will cross-contaminate when the sewage flow rate of sewage riser 51 is 4.5L / s; it also checks whether the air pipe of the inclined H-shaped pipe (110x75x110) will cross-contaminate when the sewage flow rate of sewage riser 51 is 5.2L / s, and whether the air pipe of the traditional H-pipe D (110x110x110) will cross-contaminate when the sewage flow rate of sewage riser 51 is 5.2L / s.

[0045] The experimental data are as follows:

[0046] The experimental data show that, The inclined H-shaped pipe (110X75X110) in this design has a larger flow rate than the traditional H-pipe D on the market. At a flow rate of 4.5 L / s in the sewage riser 51, the inclined H-shaped pipe (110X75X110) meets the requirements, with no water leakage from the air pipe, while the traditional H-pipe (110X75X110) does not meet the requirements, and water leakage occurs in the air pipe. At a flow rate of 5.2 L / s in the sewage riser 51, the inclined H-shaped pipe (110X75X110) meets the requirements, with only slight water droplets leaking from the air pipe, which is acceptable, while the traditional H-pipe (110X110X110) does not meet the requirements, and water leakage occurs in the air pipe. Specifically, 5.2 L / s - 4.5 L / s = 0.7 L / s, 0.7 ÷ 4.5 = 15.6, which calculates to be a 15.6% increase in maximum drainage capacity compared to the traditional H-pipe D.

[0047] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A pipe connector, characterized in that, include: At least one flow guide is provided, the flow guide is provided with a hollow flow guide cavity, and a first through hole is provided on its side wall, the first through hole penetrates the side wall and communicates with the flow guide cavity; An air guide is provided, which is arranged parallel to and opposite to the flow guide. The air guide is provided with a hollow air guide cavity and at least one second through hole is provided on its side wall. The second through hole penetrates the side wall and communicates with the air guide cavity. At least one ventilation unit includes a first connecting part and a second connecting part. The first connecting part is installed on the flow guide and corresponds to the first through hole. The second connecting part is installed on the air guide and corresponds to the second through hole. The first connecting part and the second connecting part are slidably inserted to achieve adjustable axial spacing between the flow guide and the air guide. An air guide channel is formed between the first connecting part and the second connecting part, communicating with the first through hole and the second through hole. The first through hole and the second through hole are staggered along the height direction, and the first through hole is located below the second through hole.

2. A pipe connector according to claim 1, characterized in that, The flow guide is connected to the air guide through a ventilation unit, which is installed at an angle or horizontally between the flow guide and the air guide.

3. A pipe connector according to claim 1, characterized in that, The two flow guides are respectively connected to the air guides via the two air venting units, and the two air venting units are installed at an angle or in a horizontal direction between the flow guides and the air guides.

4. A pipe connector according to claim 2, characterized in that, The first connecting part is a first tube body, which is installed on the flow guide. The axis of the first tube body and the axis of the flow guide form a non-parallel angle. The second connecting part is a second tube body, which is installed on the air guide component. The axis of the second tube body and the axis of the air guide component form a non-parallel angle. The second tube is slidably inserted into the first tube, and the first tube and the second tube together form the air guiding channel, wherein the cross-sectional area of ​​the air guiding channel is larger than the cross-sectional area of ​​the flow guiding cavity and the air guiding cavity.

5. A pipe connector according to claim 4, characterized in that, The first tube extends obliquely upward at a preset angle and is connected to the flow guide, and the second tube extends obliquely downward at a preset angle and is connected to the air guide.

6. A pipe connector according to claim 4, characterized in that, The first tube extends horizontally and is connected to the flow guide, and the second tube extends horizontally and is connected to the air guide.

7. A pipe connector according to claim 4, characterized in that, The cross-section of the air guide channel formed between the first tube and the second tube is generally circular or square.

8. A pipe connector according to claim 7, characterized in that, The sidewall of the flow guide is provided with two protrusions, which penetrate the sidewall and connect to the flow guide cavity. The two protrusions are located above the first through hole. Each of the two protrusions is detachably equipped with a sealing member for opening and closing its opening. The sealing member has an extension end, which is inserted into the protrusion and fills the internal space of the protrusion.

9. A pipe connector according to claim 2, characterized in that, It also includes two expansion joints, which are respectively located at the ends of the flow guide and the air guide; The expansion joint includes a locking component and a connecting pipe; Both the flow guide and the air guide have circumferentially threaded sections on their outer peripheral walls at the ends. The locking component is provided with an internal thread section that is adapted to the external thread section, and a locking hole is provided through it along the axial direction. The lower end of the locking hole has a tapered surface structure with a gradually decreasing inner diameter. The two connecting tubes are respectively inserted into the flow guide cavity and the air guide cavity, and the connecting tubes pass through the locking hole of the locking member. The locking member is locked by the threaded engagement of the internal thread section and the external thread section to lock and fix the connecting tubes.

10. A sewage system comprising the pipe connector as described in any one of claims 1-9, characterized in that, The sewage pipeline includes at least one sewage riser and one exhaust riser; The sewage riser consists of a first sewage pipe section and a second sewage pipe section arranged coaxially along the vertical axis, and the two ends of the guide member are respectively connected to the first sewage pipe section and the second sewage pipe section; The exhaust riser consists of a first exhaust pipe section and a second exhaust pipe section arranged coaxially along the vertical axis, and the two ends of the air guide are respectively connected to the first exhaust pipe section and the second exhaust pipe section.

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