CN205839888U - The anti-H pipe that backflows of a kind of used in construction drainage - Google Patents

Abstract

An anti-backflow H pipe for building drainage relates to the technical field of building drainage systems and solves the technical problem that the existing H pipes for building drainage are easy to damage the water seal in the drainage system and cause odor return in the toilet. The utility model comprises: a drainage standpipe, a ventilating inclined pipe and a ventilating standpipe, wherein: the connection between the upper wall of the ventilating inclined pipe and the draining standpipe is provided with a first baffle vertically downward; the lower wall of the ventilating inclined pipe A second baffle is provided at the connection between the ventilation standpipe and the ventilation standpipe axis; the pipe wall of the ventilation standpipe protrudes outward relative to the connection port of the ventilation standpipe and the ventilation inclined pipe to form a ventilation bend To ensure smooth ventilation. The utility model has the advantages of being able to effectively prevent the water in the drain pipe from entering the ventilation pipe, give full play to the ventilation effect of the ventilation pipe, reduce the pressure fluctuation in the drainage system, and improve the drainage capacity.

Description

Anti-reflux H pipe for building drainage

technical field

The utility model belongs to the technical field of building drainage systems, in particular to an anti-reflux H pipe for building drainage.

Background technique

The building domestic drainage system is divided into a single standpipe extension ventilating drainage system, a special ventilating pipe drainage system, a special single standpipe drainage system and a special special ventilating pipe drainage system, among which the special ventilating pipe drainage system is the most commonly used drainage system , It is mostly suitable for high-rise and super high-rise buildings. The key problem in the building domestic drainage system is to solve the problem of discharging sewage and wastewater in the shortest time and reducing the pressure fluctuation in the standpipe system during the drainage process, eliminating the phenomenon of water seal damage of drainage appliances, and improving the health and safety of the building. .

In the building drainage system, there are two main forms of damage to the water seal of sanitary ware: 1. Because the air is carried by the water flow during the drainage process, a positive pressure is formed in the lower part of the water flow that has not passed through, causing the water seal of the sanitary ware to splash, which will be harmful. The gas is brought into the residence; 2. Because the air is carried by the water flow in the drainage process, after the water flow passes, the upper part forms a negative pressure suction, which makes the water seal of the upper sanitary appliance lose its function, and the harmful gas is brought into the residence.

Drainage system with special ventilation pipe adds a special ventilation pipe for ventilation to the traditional drainage system, which can effectively prevent the positive and negative pressure caused by the water flow in the drainage system. During the drainage process, the air can pass through the special setting The snorkel is drained or replenished. The H pipe is a special fitting for connecting the drainage riser and the ventilation riser. The H pipe can greatly improve the pressure fluctuation in the riser system during drainage. After experiments, it was found that the H pipe of the existing structure would easily cause the water in the drainage pipe to enter the ventilation pipe, making the passage of the ventilation pipe smaller, the air in the system could not be replenished and discharged in time, and the drainage capacity of the drainage system could not be maximized.

Therefore, there are structural design defects in the existing H pipes for building drainage. During the drainage process, the negative pressure formed by the ventilation pipe will suck the water in the drainage pipe into the ventilation pipe, which reduces the cross-sectional area of the ventilation pipe and reduces the drainage capacity of the drainage system. Destroying the water seal in the drainage system can easily cause the bathroom to return to odor.

Contents of the invention

The purpose of the utility model is to overcome the disadvantages of the prior art, and provide an anti-backflow H pipe for building drainage, which solves the problem of the easily damaged drainage system of the existing H pipe for building drainage under the premise of ensuring that the ventilation channel is not reduced. The water seal and the technical problems that cause the toilet to smell back.

The utility model is achieved through the following technical solutions:

An anti-reflux H pipe for building drainage, comprising: a drainage standpipe, a ventilating inclined pipe and a ventilating standpipe, the drainage standpipe and the ventilating standpipe are arranged in parallel, the ventilating inclined pipe connects the draining standpipe and the ventilating standpipe, and the ventilating inclined pipe The connection port between the drain pipe and the drainage standpipe is lower than the connection port between the ventilation standpipe and the ventilation inclined pipe, wherein:

A first baffle is arranged vertically downward at the joint between the upper wall of the ventilation inclined pipe and the drainage standpipe;

A second baffle is provided between the lower wall of the ventilation inclined tube and the connection of the ventilation riser to the axis of the ventilation riser;

The pipe wall on the side of the connection port of the ventilation standpipe and the ventilation inclined pipe protrudes outward to form a ventilation bend to ensure that the ventilation section does not decrease and the ventilation is smooth.

Further, the anti-reflux H pipe for building drainage can be made of gray cast iron or PVC plastic.

Compared with the prior art, the utility model has the advantages that the first baffle plate is arranged vertically downward at the joint between the upper wall of the inclined ventilation pipe and the drainage vertical pipe, and the joint between the lower wall of the inclined ventilation pipe and the vertical vertical pipe reaches the axis of the vertical vertical pipe. There is a second baffle, so that in the drainage process, the first baffle and the second baffle can effectively prevent the water in the drainage pipe from entering the ventilation pipe and affecting the drainage capacity of the drainage system; The pipe wall on one side of the connecting port of the ventilating inclined pipe protrudes outwards to form a ventilating bend, which can make the cross-sectional area of the ventilating pipe unaffected and ensure its air flow.

The utility model is used in a building drainage system, and has the advantages of being able to effectively prevent water in the drainage pipe from entering the ventilation pipe, give full play to the ventilation effect of the ventilation pipe, reduce pressure fluctuations in the drainage system, and improve drainage capacity.

Description of drawings

Fig. 1 is the structural representation of the utility model;

In the figure: 1. drainage standpipe, 2. ventilation inclined pipe, 3. ventilation standpipe, 4. first baffle plate, 5. second baffle plate.

detailed description

The technical scheme of the utility model is clearly and completely described below in conjunction with the accompanying drawings.

As shown in Figure 1, a kind of anti-backflow H pipe for building drainage, comprising: drainage standpipe 1, ventilating inclined pipe 2 and ventilating standpipe 3, drainage standpipe 1 and ventilating standpipe 3 are arranged in parallel, ventilating inclined pipe 2 Connect the drainage riser 1 and the ventilation riser 3, and the connection port between the ventilation riser 2 and the drainage riser 1 is lower than the connection port between the ventilation riser 3 and the ventilation riser 2, wherein:

A first baffle 4 is provided vertically downward at the joint between the upper wall of the ventilation inclined pipe 2 and the drainage standpipe 1;

A second baffle plate 5 is provided at the joint between the lower wall of the ventilation inclined pipe 2 and the ventilation standpipe 3 to the axis of the ventilation standpipe 3, and the second baffle plate 5 is composed of a vertically upward straight plate and an inclined plate;

The pipe wall on the side of the connection port between the ventilation riser 3 and the ventilation inclined pipe 2 protrudes outwards to form a ventilation bend to ensure smooth ventilation.

The interface form of the anti-reflux H pipe for building drainage in the above embodiments is any one of a flat mouth, a mechanical flange socket, a socket interface, or a threaded interface.

The anti-reflux H pipe for building drainage in the above embodiments is made of gray cast iron, PVC plastic or other metal and non-metal materials.

The working principle of the utility model: during the working process, the sewage flows out from the drainage riser from top to bottom, the first baffle and the second baffle can effectively prevent the water in the drainage riser from entering the ventilation riser, and the ventilation riser The tube protrudes outward with respect to the pipe wall on the side of the connection port of the ventilation standpipe and the ventilation inclined pipe to form a ventilation bend, which can further ensure that the cross-sectional area of the ventilation pipe is not affected and ensure its ventilation volume.

The above-described embodiments are only descriptions of some implementations of the utility model, and are not intended to limit the concept and protection scope of the utility model. Without departing from the design concept of the utility model, those skilled in the art can Various modifications and improvements made should fall within the protection scope of the present utility model.

Claims (2)

1. the anti-H pipe that backflows of used in construction drainage, including: soil stack (1), ventilation inclined tube (2) and vent stack (3), draining Standpipe (1) and vent stack (3) be arranged in parallel, and soil stack (1) and vent stack (3) are connected by ventilation inclined tube (2), and ventilation is tiltedly Pipe (2) is less than vent stack (3) and the connector of inclined tube (2) of ventilating with the connector of soil stack (1), it is characterised in that:

Described ventilation inclined tube (2) upper wall and soil stack (1) junction are provided with the first baffle plate (4) straight down；

Described ventilation inclined tube (2) lower wall and vent stack (3) junction are provided with second baffle (5) to vent stack (3) axis；

Outwardly with the tube wall of the connector side of ventilation inclined tube (2) relative to vent stack (3) at described vent stack (3) Form ventilation bend smooth and easy to ensure ventilation.

The anti-H pipe that backflows of a kind of used in construction drainage the most according to claim 1, it is characterised in that: described used in construction drainage is prevented The H pipe that backflows is made up of casting pig or PVC plastic.