Roof vent rain protection structure

Abstract

The utility model discloses a roof exhaust pipe rainproof structure, it includes the double bend connecting pipe of setting in the surface of roof exhaust pipe: the inner chamber of double bend connecting pipe is provided with the connecting intubation, the bottom of connecting intubation is integrally formed with rain hat brim. The utility model discloses through with the double bend connecting pipe and roof exhaust pipe together, then inserts the connecting intubation into the double bend connecting pipe, when the rain comes, the camber of rain hat brim can make the rainwater along the natural slide of hat brim, thereby reduces the risk of rainwater splashes into the exhaust pipe, even if a small part of moisture enters the joint between connecting ring no.

Description

Technical Field

[0001] This utility model belongs to the field of roof exhaust pipe technology, and in particular relates to a rainproof structure for roof exhaust pipes. Background Technology

[0002] Roof exhaust pipes are key functional components that extend to the roof of a building's drainage and ventilation systems. Their core function is to connect with internal building pipes (such as drainage risers and ventilation ducts) to achieve functions such as pressure balance within the pipes and odor / moisture discharge. They are not independent pipes, but rather "connecting hubs" between the building's internal pipe network and the external environment, directly affecting the building's drainage efficiency, indoor environmental quality, and pipe lifespan.

[0003] Traditional roof exhaust pipes are relatively simple in design and construction, with their top openings usually directly exposed to the external environment. Without effective rain protection measures, rainwater can easily flow directly into the pipe from the top opening during rainy weather, especially during heavy rain or downpours. This rainwater flows down the inner wall of the pipe and can erode the building structure. Therefore, a rainproof structure for roof exhaust pipes is needed, which can prevent rainwater backflow through double-elbow connecting pipes and rainproof awning structures, thereby effectively preventing rainwater from entering the exhaust pipe. Utility Model Content

[0004] The purpose of this invention is to provide a rainproof structure for roof exhaust pipes, which can prevent rainwater backflow through a double-elbow connecting pipe and a rainproof awning structure, thereby effectively preventing rainwater from entering the exhaust pipe and solving the problems mentioned in the background art.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A rainproof structure for a roof exhaust pipe, comprising a double-elbow connecting pipe sleeved on the surface of the roof exhaust pipe; the inner cavity of the double-elbow connecting pipe is provided with a connecting insert; the bottom of the connecting insert is integrally formed with a rainproof visor; the surface of the double-elbow connecting pipe is integrally formed with a connecting ring one; the surface of the connecting insert is integrally formed with a connecting ring two; the bottom of the connecting ring one is provided with an annular groove; the surface of the connecting ring two is integrally formed with an annular baffle plate; the annular baffle plate is used in conjunction with the annular groove; the surface of the connecting ring one is provided with two positioning holes; the surface of the connecting ring two is fixedly connected with two limiting rods; the top of the limiting rods extends through to the top of the positioning holes.

[0006] Preferably, the surface of the limiting rod has a hole, and a limiting bolt is provided in the inner cavity of the hole on the surface of the limiting rod.

[0007] Preferably, the outer surface of the rainproof brim is provided with a plurality of radially distributed guide grooves.

[0008] Preferably, the inner wall of the rainproof brim is provided with a plurality of radially distributed guide grooves.

[0009] Preferably, both the double-elbow connecting pipe and the connecting insert are made of PVC pipe, and the roof exhaust pipe is made of UPVC pipe.

[0010] The beneficial effects of this utility model are: 1. This utility model connects the double-elbow connecting pipe to the roof exhaust pipe, and then inserts the connecting pipe into the double-elbow connecting pipe. When it rains, the arc surface of the rainproof awning allows the rainwater to slide down naturally along the awning, thereby reducing the risk of rainwater splashing into the exhaust pipe. Even if a small amount of water enters the gap between the first connecting ring and the second connecting ring, the annular water baffle will also block the water. When the airflow containing rainwater enters the double-elbow connecting pipe, the airflow direction is forced to change. Under the action of inertia, the rainwater separates from the airflow and falls downward. This achieves the purpose of preventing rainwater backflow through the double-elbow connecting pipe and the rainproof awning structure, thereby effectively preventing rainwater from entering the exhaust pipe. 2. Through the combined action of the first and second guide channels, the first guide channel on the outer surface of the rainproof cap brim can quickly receive a large amount of falling rainwater in heavy rain and guide the rainwater out through the channel. In windy weather, some rainwater may bypass the outer side of the rainproof cap brim and splash directly onto the inner side of the rainproof cap brim. The second guide channel can "intercept and guide" this part of the rainwater. Attached Figure Description

[0011] in: Figure 1 This is a front view schematic diagram of one embodiment of the present utility model; Figure 2 This is a perspective view of one embodiment of the present utility model; Figure 3 This is one embodiment of the present utility model. Figure 2 A magnified view of point A in the middle; Figure 4 This is a partial three-dimensional disassembled schematic diagram of one embodiment of the present utility model; Figure 5 This is a partial bottom-view three-dimensional disassembled schematic diagram of one embodiment of the present invention.

[0012] The attached diagram lists the components represented by each number as follows: 1. Roof exhaust pipe; 2. Double elbow connecting pipe; 3. Connecting insert pipe; 4. Rainproof cap; 5. Connecting ring one; 6. Connecting ring two; 7. Annular groove; 8. Annular water baffle; 9. Positioning hole; 10. Limiting rod; 11. Guide channel one; 12. Guide channel two. Detailed Implementation

[0013] In the following description, embodiments of the rainproof structure for roof exhaust pipes of this utility model will be described with reference to the accompanying drawings.

[0014] Figure 1-5 This invention illustrates a rainproof structure for a roof exhaust pipe according to an embodiment of the present invention. It includes a double-elbow connecting pipe 2 fitted onto the surface of a roof exhaust pipe 1. A connecting insert 3 is provided within the inner cavity of the double-elbow connecting pipe 2. Both the double-elbow connecting pipe 2 and the connecting insert 3 are made of PVC pipe. The roof exhaust pipe 1 is made of UPVC pipe. A rainproof visor 4 is integrally formed at the bottom of the connecting insert 3. The inner wall of the rainproof visor 4 has several radially distributed guide channels 12, and the outer surface of the rainproof visor 4 has several radially distributed guide channels 11. Through the combined action of the guide channels 11 and 12, in heavy rain, the guide channels 11 on the outer surface of the rainproof visor 4 can quickly collect a large amount of falling rainwater and guide it away through the channels. This is especially beneficial in the event of strong winds. Under certain weather conditions, some rainwater may bypass the outer side of the rainproof cap 4 and splash directly onto the inner side of the rainproof cap 4. The second channel 12 can intercept and guide this rainwater. The surface of the double elbow connecting pipe 2 is integrally formed with a connecting ring 5, and the surface of the connecting pipe 3 is integrally formed with a connecting ring 6. The bottom of the connecting ring 5 is provided with an annular groove 7, and the surface of the connecting ring 6 is integrally formed with an annular baffle 8. The annular baffle 8 works in conjunction with the annular groove 7. The surface of the connecting ring 5 is provided with two positioning holes 9, and the surface of the connecting ring 6 is fixedly connected with two limiting rods 10. The surface of the limiting rods 10 is provided with holes, and the inner cavity of the holes on the surface of the limiting rods 10 is provided with a limiting bolt. The top of the limiting rods 10 extends through to the top of the positioning holes 9.

[0015] Working principle: When using this utility model, the user connects the double-elbow connecting pipe 2 to the roof exhaust pipe 1, then aligns the limiting rod 10 with the positioning hole 9, inserts the connecting pipe 3 into the double-elbow connecting pipe 2, and inserts the limiting bolt into the surface hole of the limiting rod 10. When rain comes, the arc design of the rainproof brim 4 can better guide the flow of rainwater, allowing it to slide naturally along the arc of the brim, preventing rainwater from accumulating on the rainproof brim 4 or forming vortices, thereby reducing the risk of rainwater splashing into the exhaust pipe. Even if a small amount of water enters the gap between the connecting ring 1 5 and the connecting ring 2 6, the annular water baffle 8 will also act as a barrier. The double-elbow connecting pipe serves to prevent water from flowing back into the exhaust pipe. If the rain is heavy and accompanied by wind, the airflow containing rainwater will be blocked by the elbow when it enters the double-elbow connecting pipe 2. Due to the presence of the elbow, the airflow direction is forced to change. According to the principle of inertia, the rainwater will continue to maintain its original direction of movement under the action of inertia, thus separating from the airflow and flowing downward along the inner wall of the elbow. In this process, gravity also plays an important role, constantly causing the rainwater to drip downward instead of continuing to move forward with the airflow into the exhaust pipe. This achieves the purpose of preventing rainwater backflow through the double-elbow connecting pipe and the rainproof visor structure, thereby effectively preventing rainwater from entering the exhaust pipe.

[0016] In summary, this roof exhaust pipe rainproof structure connects the double-elbow connecting pipe 2 to the roof exhaust pipe 1, and then inserts the connecting pipe 3 into the double-elbow connecting pipe 2. When rain comes, the arc surface of the rainproof awning 4 allows rainwater to slide naturally down the awning, thereby reducing the risk of rainwater splashing into the exhaust pipe. Even if a small amount of water enters the gap between the connecting ring 1 5 and the connecting ring 2 6, the annular water baffle 8 will also block the water. When the airflow containing rainwater enters the double-elbow connecting pipe 2, the airflow direction is forced to change, and the rainwater, under the action of inertia, separates from the airflow and falls downward. This achieves the purpose of preventing rainwater backflow through the double-elbow connecting pipe and the rainproof awning structure, thus effectively preventing rainwater from entering the exhaust pipe.

Claims

1. A roof vent rainproof structure, characterized by, Includes a double-bend connecting pipe (2) fitted onto the surface of the roof exhaust pipe (1): the inner cavity of the double-bend connecting pipe (2) is provided with a connecting tube (3), the bottom of the connecting tube (3) is integrally formed with a rainproof visor (4), the surface of the double-bend connecting pipe (2) is integrally formed with a connecting ring one (5), the surface of the connecting tube (3) is integrally formed with a connecting ring two (6), the bottom of the connecting ring one (5) is provided with an annular groove (7), the surface of the connecting ring two (6) is integrally formed with an annular baffle (8), the annular baffle (8) is used in conjunction with the annular groove (7), the surface of the connecting ring one (5) is provided with two positioning holes (9), the surface of the connecting ring two (6) is fixedly connected with two limiting rods (10), the top of the limiting rods (10) extends through to the top of the positioning holes (9).

2. A rainproof structure for a roof vent according to claim 1, wherein The surface of the limiting rod (10) is provided with a hole, and a limiting bolt is provided in the inner cavity of the hole on the surface of the limiting rod (10).

3. A rain-proof structure for a roof vent according to claim 2, wherein The outer surface of the rainproof brim (4) is provided with several radially distributed guide grooves (11).

4. The rainproof structure for a roof vent according to claim 3, wherein The inner wall of the rainproof brim (4) is provided with several radially distributed guide grooves (12).

5. A rainproof structure for a roof vent according to claim 4, wherein The double elbow connecting pipe (2) and the connecting insert pipe (3) are both made of PVC pipe, and the roof exhaust pipe (1) is made of UPVC pipe.

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