Exhaust pipe

Abstract

The utility model belongs to the field of ventilation. In order to overcome the defects in the prior art, the utility model provides an exhaust pipe which comprises a pipe and is characterized in that the pipe is made of pvc (polyvinyl chloride) materials and is provided with a plurality of exhaust holes, the exhaust holes are spirally distributed from top to bottom, and the exhaust holes are communicated with the public exhaust channel. The top of the pipe is further provided with a metal net used for covering an opening in the top of the pipe. The exhaust valve is simple in structure and capable of effectively preventing chippings from blocking the exhaust channel.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of building. Especially is the field of smoke exhaust ventilation. BACKGROUND

[0002] The toilet of multi-storey apartment building is often provided with public exhaust passage, in the process of decoration, especially old apartment building, exhaust passage crack is more, seal is not strict, often need to remove the original exhaust passage first, then rebuild exhaust passage, so inevitably have building debris fall into the exhaust pipe of the floor below, even sometimes debris will block the exhaust passage of a floor, for this, people often set the access hole at the bottom of the pipe, can take out these debris. However, individual time, conditions do not allow each layer to set such access hole, then, it is necessary to design new scheme to solve this problem according to local conditions. The utility model is designed and manufactured in the project of "Xinjiang Architectural Design Research Institute Co., Ltd. Scientific and Technological Progress and Innovation Practice Project: Large-scale test research and practical application of super high-rise building rubble ground strength". CONTENT OF UTILITY MODEL

[0003] In order to overcome the deficiency of prior art, the utility model provides: an exhaust pipe, including pipe, its characterized in that: the pipe is made of pvc material, the pipe is provided with a plurality of exhaust holes, the exhaust holes are arranged in spiral line from top to bottom, and the aperture of exhaust hole is gradually reduced from top to bottom, and the top of the pipe is further provided with a metal mesh for covering the opening of the top of the pipe.

[0004] Further, the shape of exhaust hole is circular, and the diameter is greater than 2cm.

[0005] Further, the shape of metal mesh is n-shaped, the shape of opening of metal mesh is square, and the side length of opening is greater than 1cm.

[0006] Further, the lower end of metal mesh is in interference fit with the pipe, and the lower end of metal mesh is provided with a bending part, and the bending part points to the inside of the pipe.

[0007] Further, the lower part of the pipe, within 15cm from the opening of the lower end of the pipe, is not provided with exhaust hole.

[0008] The utility model has simple structure, and can effectively prevent debris from blocking the exhaust passage. DRAWING EXPLANATION

[0009] Figure 1 It is the structure schematic diagram of the utility model.

[0010] In the drawing: 1-pipe, 2-exhaust hole, 3-bending part, 4-metal mesh. CONCRETE IMPLEMENTATION

[0011] Referring to the accompanying drawings Figure 1It is the structure schematic diagram of the utility model. In the drawing: a kind of exhaust pipe, including pipe 1, pipe 1 is cylindrical, pipe 1 is made of pvc material, pipe 1 is provided with multiple exhaust holes 2, exhaust hole 2 is arranged in spiral line from top to bottom, the arrangement mode of such arrangement, the strength of pipe 1 can not be reduced a lot, we know that, the wall of pipe 1 is holed, the strength of pipe 1 will be reduced, easy to break, to reduce the possibility of pipe 1 breakage, the position of exhaust hole 2 is not too concentrated distribution, for example, exhaust hole 2 is arranged in spiral line from top to bottom can well solve this problem, and the aperture of exhaust hole 2 is gradually reduced from top to bottom, the top of pipe 1 is further provided with metal net 4 for covering pipe 1 top opening.

[0012] Further, the shape of the exhaust hole 2 is circular, and the diameter is greater than 2cm. The aperture of the exhaust hole 2 should not be too small, because during the exhaust process, there are often particulate matters, and if the aperture of the exhaust hole 2 is too small, it will be easily blocked after a long time.

[0013] Further, the shape of the metal net 4 is n-shaped, and the shape of the opening of the metal net 4 is square, and the side length of the opening is greater than 1cm.

[0014] Further, the lower end of the metal net 4 is in interference fit with the pipe 1, and the lower end of the metal net 4 is provided with a bending part 3, and the bending part 3 points to the inside of the pipe 1.

[0015] Further, the lower part of the pipe 1, within 15cm from the lower end opening of the pipe 1, is not provided with the exhaust hole 2.

[0016] The use method is as follows: the utility model is inserted into the exhaust passage leading to the upper floor, and the metal net 4 is required to be at the upper end, the lower part of the utility model is used for connecting the exhaust pipe of the decorated floor, then, the sealing of the upper floor and the lower floor is completed.

[0017] The principle of the utility model is as follows: the debris falling above the metal net 4 is as follows: the first kind is that the debris is too small, and finally falls into the maintenance opening at the bottom of the apartment building, the second kind is that it falls into the upper end of the metal net 4, which can reduce the gas discharged from the metal net 4, and the third kind is that it falls into the gap between the exhaust passage and the pipe 1, but because the side wall of the pipe 1 is provided with the exhaust hole 2, even if the lower part of the pipe 1 is blocked by the debris, the exhaust hole 2 in the upper part of the pipe 1 can still exhaust.

[0018] The utility model is not applicable to any exhaust passage, and the utility model is only applicable to the condition that the bottom of the apartment building is provided with a maintenance opening, and the debris falling from the upper floor is less. Those skilled in the art should be able to select the technical solution according to the local conditions.

[0019] The lower end of the metal net 4 is in interference fit with the pipe 1, and the lower end of the metal net 4 is provided with a bending part 3, which points to the inside of the pipe 1. The reason for the design is that the metal net 4 can tightly clamp the upper part of the pipe 1, and can play a buffering role when a large stone falls.

[0020] The lower part of the pipe 1 is not provided with the exhaust hole 2 within 15 cm from the opening at the lower end of the pipe 1. The reason for the design is that the lower part of the pipe 1 is connected to the pipe of the decoration floor.

[0021] The utility model discloses simple structure can effectively prevent the chip to block the exhaust passage.

Claims

1. An exhaust pipe comprising a pipe, characterised in that: The pipe is made of PVC material, and the pipe is provided with a plurality of exhaust holes, the exhaust holes are arranged in a spiral line from top to bottom, and the diameters of the exhaust holes are gradually reduced from top to bottom, and the top of the pipe is further provided with a metal mesh for covering the top opening of the pipe.

2. An exhaust pipe according to claim 1, wherein: The shape of the exhaust hole is circular, and the diameter is greater than 2cm.

3. An exhaust pipe according to claim 1, wherein: The shape of the metal mesh is n-shaped, and the shape of the opening of the metal mesh is square, and the side length of the opening is greater than 1cm.

4. An exhaust pipe according to claim 1, wherein: The lower end of the metal mesh is in interference fit with the pipe, and the lower end of the metal mesh is provided with a bending part, and the bending part points to the inside of the pipe.

5. An exhaust pipe according to claim 1, wherein: The lower part of the pipe within 15cm from the lower end opening of the pipe is not provided with exhaust holes.

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