Ventilation structure for building water supply and drainage engineering

Abstract

The utility model relates to a ventilation structure for building water supply and drainage engineering, and belongs to the technical field of drainage engineering, the ventilation structure comprises a vertical pipe, a first ventilation cylinder is arranged at the top of the vertical pipe, a first ventilation hole is formed in the first ventilation cylinder, a second ventilation cylinder slidably penetrates through the first ventilation cylinder, and a second ventilation hole is formed in the second ventilation cylinder; and the second ventilating cylinder penetrates through the vertical pipe in a sliding manner. According to the drainage vent pipe, gas in the drainage vent pipe can be discharged smoothly in a general weather environment, meanwhile, the number of ways for sundries, rainwater and the like to enter the drainage vent pipe is reduced in a severe weather environment, and the situation that the drainage vent pipe is blocked is avoided as much as possible.

Description

Technical Field

[0001] This application relates to the technical field of drainage engineering, and in particular to a ventilation structure for building water supply and drainage engineering. Background Art

[0002] In building water supply and drainage engineering, in order to maintain the air pressure balance in the drainage vent pipe, a ventilation structure is usually provided at the top of the drainage vent pipe exposed on the installation surface, which can discharge the gas in the drainage vent pipe to reduce the situation of negative pressure formation in the drainage vent pipe and poor drainage.

[0003] Currently, an air vent cap is installed in the existing ventilation structure, and a number of ventilation holes are provided in the air vent cap, and the gas discharged from the drainage vent pipe is discharged through the ventilation holes to reduce the blockage of the gas in the pipe.

[0004] The disadvantages of the existing technology are that in bad weather environments such as rainy days and stormy days, rainwater or sundries are likely to enter the drainage vent pipe through the ventilation holes of the ventilation structure, causing blockage. Summary of the Utility Model

[0005] In order to address the deficiencies of the existing technology, this application provides a ventilation structure for building water supply and drainage engineering, which can make the gas in the drainage vent pipe discharge smoothly in general weather environments, and reduce the ways for sundries, rainwater, etc. to enter the drainage vent pipe in bad weather environments, and try to avoid blockage in the drainage vent pipe.

[0006] This application provides a ventilation structure for building water supply and drainage engineering, which adopts the following technical solutions:

[0007] A ventilation structure for building water supply and drainage engineering includes a riser pipe. A first ventilation cylinder is provided at the top of the riser pipe. The first ventilation cylinder is provided with first ventilation holes. A second ventilation cylinder slides through the first ventilation cylinder internally. The second ventilation cylinder is provided with second ventilation holes, and the second ventilation cylinder slides through the riser pipe internally.

[0008] By adopting the above technical solutions, in general weather environments, while the gas in the drainage vent pipe is discharged smoothly from the first ventilation holes and the second ventilation holes, when encountering bad weather environments that cause a large increase in sundries and rainwater, the second ventilation cylinder can slide through the riser pipe and the first ventilation cylinder internally and descend to be flush with the top of the first ventilation cylinder. The gas in the drainage vent pipe is only discharged from the first ventilation holes, reducing the possibility of sundries and rainwater entering the drainage vent pipe.

[0009] This application is further provided that the bottom of the second ventilation cylinder is threadedly connected to the interior of the riser pipe.

[0010] By adopting the above technical solution, when the second ventilation cylinder is rotated, the second ventilation cylinder descends to be flush with the top of the first ventilation cylinder at the top by using the threads at the bottom. While reducing the ways for sundries and rainwater to enter the drain vent pipe, the gas in the drain vent pipe can also be discharged from the overlapping first ventilation holes and second ventilation holes.

[0011] The present application is further provided with: a clamping interface is arranged on the outer side of the first ventilation cylinder, a spring is arranged on the outer side of the second ventilation cylinder, a plug pin is arranged at one end of the spring away from the second ventilation cylinder, and the plug pin is inserted into the clamping interface of the first ventilation cylinder.

[0012] By adopting the above technical solution, when the second ventilation cylinder of the second ventilation cylinder is exposed, the plug pin is inserted into the clamping interface of the first ventilation cylinder, making the second ventilation cylinder not easy to slide down.

[0013] The present application is further provided with: a top cover is arranged at the top of the second ventilation cylinder.

[0014] By adopting the above technical solution, the top cover can block most of the rainwater and sundries, and try to prevent the rainwater and sundries from entering the drain vent pipe through the first ventilation holes and the second ventilation holes.

[0015] The present application is further provided with: an activated carbon packet is arranged at the inner top of the top cover.

[0016] By adopting the above technical solution, since there may be harmful substances in the gas of the drain vent pipe, the activated carbon packet can filter a certain amount of harmful gas without blocking the gas from being discharged from the first ventilation cylinder and the second ventilation cylinder, reducing the situation of harmful gas polluting the environment.

[0017] The present application is further provided with: a caulking material is filled in the gap between the bottom of the riser pipe and the connected plane.

[0018] By adopting the above technical solution, since rainwater will seep into the gap between the bottom of the riser pipe and the connected plane, filling the caulking material can try to avoid this situation.

[0019] The present application is further provided with: a first ventilation net is arranged in the first ventilation hole of the first ventilation cylinder, and a second ventilation net is arranged in the second ventilation hole of the second ventilation cylinder.

[0020] By adopting the above technical solution, the situation of sundries and rainwater entering the drain vent pipe from the first ventilation holes and the second ventilation holes can be further reduced.

[0021] The present application is further provided with: the side surface of the top cover is set as an inclined surface, and a plurality of convex strips are evenly protruded around the side surface with the axis as the center.

[0022] By adopting the above technical solution, rainwater can slide along the inclined surface of the top cover. Therefore, it is difficult for rainwater to come into contact with the first ventilation tube and the second ventilation tube. The convex strips can increase the structural strength of the top cover, making the top cover more pressure-resistant and impact-resistant.

[0023] In summary, the present application has the following beneficial effects:

[0024] The present application adjusts different ventilation states for general weather conditions and harsh weather conditions, enabling the gas in the drain vent pipe to be smoothly discharged through the first ventilation holes and the second ventilation holes. At the same time, it can also slide through the second ventilation tube inside the riser and the first ventilation tube and descend to be flush with the top of the first ventilation tube. At this time, the gas in the drain vent pipe is only discharged through the first ventilation holes, reducing the possibility of debris and rainwater entering the drain vent pipe when the amount of debris and rainwater increases significantly. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 FIG. 1 is a schematic structural diagram of the overall embodiment 1 of the present application.

[0026] Figure 2 FIG. 2 is a schematic structural diagram of the embodiment 1 of the present application when used in a harsh weather environment.

[0027] Figure 3 FIG. 3 is a schematic cross-sectional structural diagram of the overall embodiment 1 of the present application.

[0028] Figure 4 FIG. 4 is Figure 3 a partially enlarged schematic structural diagram of A in the present application.

[0029] Figure 5 FIG. 5 is a schematic structural diagram of the overall embodiment 2 of the present application.

[0030] Figure 6 FIG. 6 is a schematic cross-sectional structural diagram of the overall embodiment 2 of the present application.

[0031] Reference numerals: 1, riser; 2, first ventilation tube; 20, first ventilation hole; 21, first ventilation net; 3, second ventilation tube; 30, second ventilation hole; 31, second ventilation net; 4, card interface; 5, spring; 6, bolt; 7, top cover; 8, activated carbon packet; 9, caulking material; 10, convex strip; 11, drain vent pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The following Figures 1 to 6 further describes the present application in detail with reference to the

[0033] Embodiment 1:

[0034] Refer to Figures 1 to 3In this embodiment, a ventilation structure for building water supply and drainage engineering includes a vertical pipe 1, a first ventilation tube 2 is fixedly connected to the top of the vertical pipe 1, the first ventilation tube 2 is provided with a first ventilation hole 20, a second ventilation tube 3 is slidably penetrated inside the first ventilation tube 2, the second ventilation tube 3 is provided with a second ventilation hole 30, and the second ventilation tube 3 slides through the vertical pipe 1, so that in general weather conditions, that is, in an environment without a lot of rain and debris, the second ventilation hole 30 of the second ventilation tube 3 is exposed to the outside, and the gas of the drainage ventilation pipe 11 can be discharged from the first ventilation hole 20 and the second ventilation hole 30. The second air vent 30 is smoothly discharged; when encountering a bad weather environment causing a large increase in debris and rainwater, the top of the second air vent 3 drops to be flush with the top of the first air vent 2, so that the second air vent 30 is no longer exposed to the outside, but overlaps with the first air vent 20. At this time, only the first air vent 20 is exposed to the outside, and the thickness of the inner wall overlapped by the first air vent 20 of the first air vent 2 and the second air vent 30 of the second air vent 3 increases the distance for debris or rainwater to enter the drainage vent pipe 11, making it more difficult for debris or rainwater to enter the drainage vent pipe 11. Therefore, the gas in the drainage vent pipe 11 is discharged only through the first air vent 20, and at the same time, the first air vent 20 is retained to exhaust gas to reduce the path for debris and rainwater to enter the drainage vent pipe 11, and to avoid blockage in the drainage vent pipe 11 as much as possible.

[0035] Furthermore, the bottom of the second air cylinder 3 is connected to the internal thread of the vertical pipe 1. The second air cylinder 3 is rotated and the second air cylinder 3 is lowered to the top by the bottom thread to be flush with the top of the first air cylinder 2, thereby reducing the path for debris and rainwater to enter the drainage ventilation pipe 11. At the same time, the gas in the drainage ventilation pipe 11 can also be discharged from the overlapping first ventilation holes 20 and second ventilation holes 30. At the same time, the second air cylinder 3 can be screwed out of the first air cylinder 2. When the drainage ventilation pipe 11 is blocked, the second air cylinder 3 can be taken out to clean the blockage inside the drainage ventilation pipe 11.

[0036] refer to Figure 1 , Figure 3 and Figure 4 In this embodiment, a card interface 4 is provided on the outer side of the first air cylinder 2, a spring 5 is fixedly connected to the outer side of the second air cylinder 3, a latch 6 is fixedly connected to the end of the spring 5 away from the second air cylinder 3, the latch 6 is inserted into the card interface 4 of the first air cylinder 2, and the latch 6 is inserted into the card interface 4 of the first air cylinder 2, so that the second air hole 30 is exposed to the outside and the drainage ventilation pipe 11 is exhausted, and the second air cylinder 3 is not easy to slide down. When the second air cylinder 3 is stored in the first air cylinder 2, an external tool is used to press the latch 6. After the latch 6 enters the second air cylinder 3 through the spring 5, the second air cylinder 3 can be rotated to move in the first air cylinder 2 and the standpipe 1.

[0037] refer to Figure 1 andFigure 2 In this embodiment, a top cover 7 is fixedly connected to the top of the second air-permeable cylinder 3. The top cover 7 can block most of the rainwater and sundries, reducing the entry of rainwater and sundries into the drain vent pipe 11 through the first air-permeable holes 20 and the second air-permeable holes 30. At the same time, when the top surface of the second air-permeable cylinder 3 drops to be flush with the top surface of the first air-permeable cylinder 2, the bottom surface of the top cover 7 abuts against the top surface of the first air-permeable cylinder 2, making it difficult for the second air-permeable cylinder 3 to fall off.

[0038] Reference Figure 3 In this embodiment, an activated carbon packet 8 is fixedly connected to the inner top of the top cover 7. The activated carbon packet 8 can absorb harmful substances in the gas in the drain vent pipe 11. Therefore, the activated carbon packet 8 on the inner top of the top cover 7 can filter a certain amount of harmful gases without blocking the gas from discharging from the first air-permeable cylinder 2 and the second air-permeable cylinder 3, and try to avoid polluting the environment with harmful gases.

[0039] Reference Figure 1 In this embodiment, a caulking material 9 is filled between the bottom of the riser pipe 1 and the gap of the connected plane. Generally, there is a gap between the bottom of the riser pipe 1 and the connected plane, and the caulking material 9 can fill the gap to prevent rainwater from seeping in through the gap.

[0040] Furthermore, the side surface of the top cover 7 is set as an inclined surface. With the axis as the center, a plurality of convex strips 10 are evenly protruded around the side surface of the top cover 7. In a harsh weather environment, rainwater can slide down along the inclined surface of the top cover 7 to prevent the rainwater from contacting the first air-permeable cylinder 2 and the second air-permeable cylinder 3 and entering the drain vent pipe. Moreover, the convex strips 10 can increase the structural strength of the top cover 7 and improve the pressure resistance and impact resistance of the top cover 7.

[0041] Embodiment 2:

[0042] Reference Figure 5 And Figure 6 The difference between Embodiment 2 and Embodiment 1 lies in the setting method of the first air-permeable holes 20 and the second air-permeable holes 30. In this embodiment, a first air-permeable net 21 is fixedly connected inside the first air-permeable hole 20 of the first air-permeable cylinder 2, and a second air-permeable net 31 is fixedly connected inside the second air-permeable hole 30 of the second air-permeable cylinder 3. The first air-permeable net 21 and the second air-permeable net 31 have a denser mesh structure, further reducing the possibility of sundries and rainwater entering the drain vent pipe 11 through the first air-permeable holes 20 and the second air-permeable holes 30.

[0043] The implementation principle of the embodiment of this application is as follows: In a general weather environment, the second ventilation cylinder 3 is inserted into the clamping interface 4 of the first ventilation cylinder 2 through the bolt 6, exposing the second ventilation holes 30, and the gas in the drainage ventilation pipe 11 can smoothly discharge from the first ventilation holes 20 and the second ventilation holes 30; while in a harsh weather environment, an external tool is used to press the bolt 6, so that the bolt 6 retracts into the second ventilation cylinder 3 through the spring 5, and the second ventilation cylinder 3 with the bottom threadedly connected to the riser 1 is rotated to make the top surface of the second ventilation cylinder 3 flush with the top surface of the first ventilation cylinder 2, and the bottom surface of the top cover 7 abuts against the bottom surface of the first ventilation cylinder 2 to prevent the second ventilation cylinder 3 from slipping. At this time, the second ventilation holes 30 overlap with the first ventilation holes 20. While reducing the entry of sundries and rainwater into the drainage ventilation pipe 11, the gas in the drainage ventilation pipe 11 can also discharge from the overlapping first ventilation holes 20 and second ventilation holes 30.

[0044] The above are all the preferred embodiments of this application. Without restricting the protection scope of this application accordingly, therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A ventilation structure for building water supply and drainage engineering, characterized in that It includes a riser pipe (1), a first ventilation cylinder (2) is provided at the top of the riser pipe (1), the first ventilation cylinder (2) is provided with a first ventilation hole (20), a second ventilation cylinder (3) slidably penetrates through the inside of the first ventilation cylinder (2), the second ventilation cylinder (3) is provided with a second ventilation hole (30), and the second ventilation cylinder (3) slidably penetrates through the riser pipe (1).

2. The breathable structure for a building water supply and drainage project according to claim 1, characterized in that, The bottom of the second ventilation cylinder (3) is threadedly connected to the inside of the riser pipe (1).

3. The breathable structure for a building water supply and drainage project according to claim 2, characterized in that, A clamping interface (4) is provided on the outer side of the first ventilation cylinder (2), a spring (5) is provided on the outer side of the second ventilation cylinder (3), a bolt (6) is provided at one end of the spring (5) away from the second ventilation cylinder (3), and the bolt (6) penetrates through the clamping interface (4) of the first ventilation cylinder (2).

4. The breathable structure for a building water supply and drainage project according to claim 1, characterized in that A top cover (7) is provided at the top of the second ventilation cylinder (3).

5. The breathable structure for a building water supply and drainage project according to claim 4, characterized in that, An activated carbon packet (8) is provided at the inner top of the top cover (7).

6. The breathable structure for a building water supply and drainage project according to claim 1, characterized in that, A caulking material (9) is filled between the gap between the bottom of the riser pipe (1) and the connected plane.

7. The air-permeable structure for a building water supply and drainage project according to claim 1, characterized in that, A first ventilation mesh (21) is provided in the first ventilation hole (20) of the first ventilation cylinder (2), and a second ventilation mesh (31) is provided in the second ventilation hole (30) of the second ventilation cylinder (3).

8. The air-permeable structure for a building water supply and drainage project according to claim 4, characterized in that, The side surface of the top cover (7) is a bevel surface, and a plurality of ribs (10) are evenly convexly provided around the side surface of the top cover (7) with the axis as the center.

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