Leakage-proof structure of roof penetrating drainage vertical pipe

Abstract

A leakage-proof structure of a roof penetrating drainage vertical pipe comprises an embedded pipe embedded in a floor slab, the top of the embedded pipe extends upwards and is higher than the top of the floor slab, a drainage pipe is arranged in the embedded pipe in a sleeved mode, sealant is filled between the embedded pipe and the drainage pipe, a sealing ring is further arranged outside the drainage pipe in a sleeved mode, and the sealing ring is connected with the embedded pipe in a sleeved mode. The section of the sealing ring is in a trapezoid shape with the wide upper portion and the narrow lower portion, the sealing ring is installed between the drainage pipe and the embedded pipe, the drainage pipe is further sleeved with a sealing cover, the sealing cover is in threaded connection with the embedded pipe, the sealing cover is rotated, the end face of the sealing cover presses the sealing ring, and therefore the sealing ring is tightly filled in a gap between the drainage pipe and the embedded pipe. The utility model has the beneficial effects that the sealing effect is further enhanced by filling the sealant between the drain pipe and the embedded pipe and sleeving the trapezoidal sealing ring outside the drain pipe.

Description

Technical Field

[0001] The utility model relates to a building water supply and drainage system, in particular to a leak-proof structure for a roof-penetrating drainage riser. Background Art

[0002] With the acceleration of the urbanization process and the continuous increase of building height, the drainage system of buildings plays an important role in building design. The stability and durability of the drainage system directly affect the service life of the building and the comfort of living. Especially in high-rise buildings, the roof drainage system is an important part of the drainage system, responsible for quickly discharging the roof water accumulation from the building to prevent the water accumulation from damaging the building structure.

[0003] However, in the prior art, some technical problems often occur during the use of the drainage riser system. One of the main problems is the leakage problem of the drain pipe. Since the drain pipe usually needs to penetrate the floor slab or the roof for installation, this penetration structure may cause the sealing to fail due to poor sealing, material aging or structural stress change during long-term use, and then leakage occurs. This leakage not only affects the normal function of the drainage system, making it difficult to discharge the roof water accumulation, but also may cause floor slab seepage, resulting in dampness and mildew inside the building, and even affecting the structural safety.

[0004] The traditional drainage riser penetration structure mainly relies on simple sealing materials for sealing, such as using sealant, sealing ring, etc. Although these sealing measures can effectively prevent leakage in the short term, in the long term, the sealing materials are prone to aging and failure due to environmental changes such as temperature and humidity changes. Especially after experiencing multiple cold and heat cycles, the elasticity and adhesion performance of the sealant and the sealing ring will decrease significantly. In addition, the settlement of the building and the thermal expansion and contraction caused by temperature will change the relative position between the drain pipe and the floor slab, which is also likely to cause the sealing to fail. Therefore, how to improve the leak-proof performance of the roof drainage riser penetration structure, especially the stability and durability during long-term use, has become a key technical problem in building design and construction. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the defects of the existing technology, and provide a roof-penetrating drainage riser leak-proof structure with simple structure, convenient use, which can effectively solve the problem that the drain pipe in the existing technology is prone to leakage, improve the leak-proof performance of the drainage riser system, and can also maintain a good sealing effect during long-term use, reducing the maintenance and repair costs caused by leakage.

[0006] The object of the utility model is achieved in the following way: A leak-proof structure for a roof-penetrating drainage riser, which includes a pre-buried pipe pre-buried in the floor slab. The top of the pre-buried pipe extends upward and is set higher than the top of the floor slab. A drain pipe is sleeved inside the pre-buried pipe, and sealant is filled between the pre-buried pipe and the drain pipe. A sealing ring is also sleeved outside the drain pipe. The cross-section of the sealing ring is in the shape of a trapezoid with a wider top and a narrower bottom. The sealing ring is installed between the drain pipe and the pre-buried pipe. The drain pipe is also sleeved with a sealing cover, and the sealing cover is screwed to the pre-buried pipe. By rotating the sealing cover, the end face of the sealing cover presses the sealing ring, so that the sealing ring tightly fills the gap between the drain pipe and the pre-buried pipe.

[0007] Further: A sealing ring extends downward from the bottom of the sealing ring, and the cross-section of the sealing ring is in the shape of a rectangle.

[0008] Further: The outer diameter of the sealing ring is set to be less than or equal to the inner diameter of the pre-buried pipe.

[0009] Further: The outer diameter of the top of the sealing ring is set to be larger than the outer diameter of the pre-buried pipe.

[0010] Further: The top of the pre-buried pipe is provided with an external thread. Correspondingly, an internal thread is provided inside the sealing cover, and the sealing cover is screwed and fixed on the pre-buried pipe.

[0011] Further: The top of the sealing cover is provided with a through hole, the through hole is sleeved outside the drain pipe, and the inner end of the sealing cover is pressed against the end of the sealing ring.

[0012] The beneficial effects of the utility model are: 1. The structure is simple, the production cost is low, and the market competitiveness is improved. The leak-proof structure for a roof-penetrating drainage riser provided by the utility model has the following technical advantages:

[0013] 2. By filling sealant between the drain pipe and the pre-buried pipe and sleeving a trapezoidal sealing ring outside the drain pipe, the sealing effect is further enhanced. The trapezoidal design of the sealing ring with a wider top and a narrower bottom ensures that it can effectively fill the gap between the drain pipe and the pre-buried pipe when being pressed by the sealing cover, thus greatly reducing the possibility of water leakage, especially the sealing stability is significantly improved after long-term use.

[0014] 3. The use of the sealing ring and the sealant makes the whole structure have good elasticity and adaptability, and can effectively cope with the thermal expansion and contraction caused by temperature changes and the structural displacement caused by building settlement. This design can maintain the sealing performance under various environmental conditions and extend the service life of the drainage system.

[0015] 4. The leak-proof structure adopts a combination form of a pre-embedded pipe, a drain pipe, a sealing ring and a sealing cover, with a simple structure, which is convenient for on-site construction and installation. The sealing cover and the pre-embedded pipe are connected by screwing, which not only ensures the tight connection between all parts, but also facilitates later inspection and maintenance, reducing the maintenance cost.

[0016] 5. The sealing cover used in the present utility model can apply pressure by spiral rotation to ensure that the sealing ring is firmly pressed, achieving long-term sealing. This design ensures that the sealing ring is always in the best working state throughout the service life, thereby reducing the water leakage problem caused by seal failure.

[0017] 6. A through hole is provided in the sealing cover, and the drain pipe passes through the through hole. At the same time, the inner end face of the sealing cover directly presses on the top of the sealing ring. This design effectively prevents the sealing ring from shifting due to aging or structural stress changes during long-term use, further improving the reliability of the seal. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the overall assembly use state of the present utility model.

[0019] Figure 2 It is an exploded view of the structure of the present utility model.

[0020] Figure 3 It is a sectional view of the structure of the present utility model. Detailed Embodiment

[0021] The present utility model will be further described in detail below with reference to the drawings. A leak-proof structure for a roof-penetrating drainage riser includes a pre-embedded pipe 2 embedded in a floor slab 1. The top of the pre-embedded pipe 2 extends upward and is set higher than the top of the floor slab 1. A drain pipe 3 is sleeved inside the pre-embedded pipe 2, and sealant is filled between the pre-embedded pipe 2 and the drain pipe 3. A sealing ring 4 is also sleeved outside the drain pipe 3. The cross-section of the sealing ring 4 is trapezoidal with a wider top and a narrower bottom. The sealing ring 4 is installed between the drain pipe 3 and the pre-embedded pipe 2. The drain pipe 3 is also sleeved with a sealing cover 5. The sealing cover 5 is screwed to the pre-embedded pipe 2. By rotating the sealing cover 5, the end face of the sealing cover 5 presses the sealing ring 4, so that the sealing ring 4 tightly fills the gap between the drain pipe 3 and the pre-embedded pipe 2.

[0022] In one embodiment: a sealing ring 6 extends downward from the bottom of the sealing ring 4, and the cross-section of the sealing ring 6 is rectangular.

[0023] In one embodiment: the outer diameter of the sealing ring 6 is set to be less than or equal to the inner diameter of the pre-embedded pipe 2.

[0024] In one embodiment: the outer diameter of the top of the sealing ring 4 is set to be greater than the outer diameter of the pre-embedded pipe 2.

[0025] In one embodiment: an external thread is provided at the top of the embedded pipe 2. Correspondingly, an internal thread is provided in the sealing cover 5, and the sealing cover 5 is screwed and fixed on the embedded pipe 2.

[0026] In one embodiment: a through hole is provided at the top of the sealing cover 5. The through hole is sleeved outside the drain pipe 3, and the inner end of the sealing cover 5 is pressed against the end of the sealing ring 4.

[0027] Working principle: Through a clever structural design, the leak-proof structure of the roof-penetrating drainage riser of the present utility model realizes an efficient and reliable leak-proof function. The working principle is as follows:

[0028] When building the foundation, the embedded pipe is pre-installed on the floor slab, and the top of the embedded pipe extends out of the floor slab surface. The drain pipe is inserted into the inside of the embedded pipe by means of sleeving. The existence of the embedded pipe forms a closed space between the drain pipe and the floor slab, laying a foundation for subsequent sealing work.

[0029] Sealant is filled in the gap between the embedded pipe and the drain pipe. The function of the sealant is to fill the possible tiny gaps between the drain pipe and the embedded pipe, forming the first line of defense to prevent water penetration.

[0030] A trapezoidal sealing ring with a wider upper part and a narrower lower part is installed outside the drain pipe. The sealing ring is installed between the drain pipe and the embedded pipe and is pressed tightly by rotating the sealing cover installed on the top of the embedded pipe. The sealing cover is connected to the embedded pipe by threads. When the sealing cover rotates, its downward pressing end face will apply pressure on the top of the sealing ring, causing the sealing ring to be squeezed and expand downward, further tightly filling the gap between the drain pipe and the embedded pipe, thus forming the second sealing line of defense.

[0031] A through hole is provided at the top of the sealing cover, and the drain pipe passes through the through hole and exits from the sealing cover. The sealing cover not only plays the role of pressing the sealing ring tightly, but also plays the role of protecting the sealing ring and the sealant, preventing the influence of the external environment such as rain, dust, temperature change, etc. on the sealing structure, and prolonging the service life of the sealing ring and the sealant.

[0032] Compared with the traditional technology, a double-sealing design is adopted in this case to improve the leak-proof effect: Through the double-sealing design of the sealant and the sealing ring, the sealing performance of the drainage riser is greatly improved. The sealant, as the first line of defense, can effectively fill the tiny gaps between the drain pipe and the embedded pipe; while the sealing ring forms the second line of defense through the pressing action of the sealing cover, further ensuring the reliability of the drainage system.

[0033] 2. Adapt to environmental changes and ensure long-term stability: The sealing ring is designed with a trapezoidal cross-section. When pressed by the sealing cover, it can produce large elastic deformation to adapt to the structural displacement between the drain pipe and the embedded pipe. This design enables the entire sealing structure to adapt to the displacement changes caused by thermal expansion and contraction or settlement of the building, ensuring the sealing effect during long-term use.

[0034] 3. Easy to maintain and repair: The sealing cover is fixed to the embedded pipe by threads, making the sealing structure more convenient for installation and maintenance. When maintenance is required, simply rotate the sealing cover to disassemble it, which is convenient for checking the status of the sealing ring and sealant, reducing the maintenance difficulty and time.

[0035] 4. Enhance the structural durability: The design of the sealing cover not only presses the sealing ring but also provides physical protection to prevent the sealing ring and sealant from aging or being damaged when exposed to the external environment for a long time. In addition, the presence of the sealing cover effectively prevents the sealing ring from shifting or deforming due to long-term stress, thus ensuring the long-term stability of the sealing structure. During later maintenance, by rotating the sealing cover and applying pressure to the sealing ring, the gap existing due to the long-term use and aging of the sealing ring can be compensated, which is convenient for later maintenance.

[0036] In summary, the leak-proof structure of the roof-penetrating drainage riser of the present utility model significantly improves the sealing performance, durability, and maintenance convenience of the drainage riser through a clever structural design. It is applicable to the building roof drainage systems under various climatic conditions, so it can be widely promoted and used.

[0037] The above shows and describes the basic principles, main features, and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. A roof penetration drainage riser leak prevention structure, characterized in that: The invention comprises a pre-buried pipe (2) pre-buried on a floor slab (1), the top of the pre-buried pipe (2) extending upward and being arranged above the top of the floor slab (1), a drainage pipe (3) being sleeved inside the pre-buried pipe (2), and a sealing glue being filled between the pre-buried pipe (2) and the drainage pipe (3), a sealing ring (4) being sleeved outside the drainage pipe (3), the cross section of the sealing ring (4) being in the shape of a trapezoid with a wide top and a narrow bottom, the sealing ring (4) being installed between the drainage pipe (3) and the pre-buried pipe (2), and a sealing cover (5) being sleeved on the drainage pipe (3), the sealing cover (5) being screwed to the pre-buried pipe (2), the sealing cover (5) being rotated, and the end face of the sealing cover (5) pressing the sealing ring (4), so that the sealing ring (4) tightly fills the gap between the drainage pipe (3) and the pre-buried pipe (2).

2. A roof penetration drainage riser leak-proof structure according to claim 1, characterized in that: A sealing ring (6) extends downward from the bottom of the sealing ring (4), and the sealing ring (6) has a rectangular cross-section.

3. A roof penetration drainage riser leak-proof structure according to claim 2, characterized in that: The outer diameter of the sealing ring (6) is smaller than or equal to the inner diameter of the embedded pipe (2).

4. A roof penetration drainage riser leak-proof structure according to claim 1, characterized in that: The outer diameter of the top of the sealing ring (4) is larger than the outer diameter of the embedded pipe (2).

5. The anti-leakage structure for roof penetration drainage riser according to claim 1, characterized in that: The top of the embedded pipe (2) is provided with an external thread, and correspondingly, an internal thread is provided inside the sealing cover (5), and the sealing cover (5) is screwed and fixed on the embedded pipe (2).

6. A roof penetration drainage riser leak-proof structure according to claim 1, characterized in that: The top of the sealing cover (5) is provided with a through hole, the through hole is sleeved outside the drain pipe (3), and the inner end of the sealing cover (5) is pressed against the end of the sealing ring (4).

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