A drainage system capable of resisting strong wind, peculiar smell and bacteria aerosol backflow

Abstract

The utility model discloses an anti -strong wind, prevent peculiar smell and bacterium aerosol back -inflow's drainage system, including main drain pipe, main vent pipe, drainage branch pipe, vent branch pipe, first air inlet valve and second air inlet valve, and drainage branch pipe is many, and one end of main vent pipe is located outdoor, and the other end is connected with main drain pipe, and the water inlet end of each drainage branch pipe is equipped with water trap, and each water trap is equipped with first air inlet valve, and one end of vent branch pipe is connected with main vent pipe, and the other end is connected with drainage branch pipe, and the junction of vent branch pipe and main vent pipe is equipped with second air inlet valve, and second air inlet valve is located in the room. When high negative pressure appears outdoor in strong wind weather, make the negative pressure form in main vent pipe, at this time, the air in the room enters into vent branch pipe and main vent pipe through second air inlet valve, balance the air pressure in main vent pipe, avoid the negative pressure of main vent pipe to destroy water seal of water trap, avoid the phenomenon of stink in strong wind weather, improve the comfort of living.

Description

Technical Field

[0001] This utility model relates to a drainage system, and more particularly to a drainage system that is resistant to strong winds, prevents odors, and prevents bacterial aerosol backflow. Background Technology

[0002] To prevent sewage fumes from entering buildings, plumbing regulations mandate the installation of water traps in all sanitary fixtures. The purpose is to create a barrier between the building and the sewage system using the water seal within the trap. However, during strong winds, such as a tropical storm (wind speed of 20 m / s), a negative pressure of approximately 240 Pa can be generated, enough to lift a water column of about 24.5 mm. During a typhoon with wind speeds of 40 m / s, the negative pressure can reach approximately 960 Pa, with the suction force capable of breaking a water column as high as 98 mm. Currently, even the best-performing water traps on the market have a water seal height of around 50 mm, but under the immense negative pressure generated by a strong typhoon, the risk of the water seal being breached is extremely high. Therefore, existing drainage systems are prone to backflow of odors during strong winds, reducing the comfort of residents. Summary of the Invention

[0003] The purpose of this utility model is to provide a drainage system that can solve at least one of the above problems, including strong wind resistance, odor prevention, and bacterial aerosol backflow prevention.

[0004] According to one aspect of this utility model, a drainage system resistant to strong winds, odors, and bacterial aerosol backflow is provided, including a main drain pipe, a main vent pipe, drain branch pipes, vent branch pipes, a first air inlet valve, and a second air inlet valve. Multiple drain branch pipes are provided, all connected to the main drain pipe. One end of the main vent pipe is located outdoors, and the other end is connected to the main drain pipe. Each drain branch pipe has a water trap at its inlet end, and a first air inlet valve is correspondingly provided at each water trap. The first air inlet valve is located above the water seal in the water trap. One end of the vent branch pipe is connected to the main vent pipe, and the other end is connected to the drain branch pipe. A second air inlet valve is provided at the connection between the vent branch pipe and the main vent pipe, and the second air inlet valve is located indoors.

[0005] The beneficial effects of this utility model are as follows: By providing a second air inlet valve, when a high negative pressure occurs outdoors during strong winds, a negative pressure is formed in the main vent pipe. At this time, indoor air enters the vent branch pipe through the second air inlet valve. Since the second air inlet valve is close to the main vent pipe, the air entering through the second air inlet valve can quickly enter the main vent pipe, balancing the air pressure in the main vent pipe and preventing a high negative pressure phenomenon in the main vent pipe. This avoids the negative pressure in the main vent pipe from damaging the water seal of the water trap, prevents the backflow of odors during strong winds, and improves the comfort of living.

[0006] In some implementations, the first air intake valve has the same structure as the second air intake valve. Therefore, both can meet the air intake requirements, preventing negative pressure in the drain pipe from damaging the water seal of the trap.

[0007] In some implementations, the first air inlet valve is installed perpendicular to the water trap, and the second air inlet valve is installed perpendicular to the vent branch pipe. This facilitates uniform stress distribution on the sealing structure within each air inlet valve, ensuring that each air inlet valve can properly intake or seal during use.

[0008] In some implementations, the first air inlet valve is installed on the water trap at a position at least 10cm above the highest point of the water seal in the corresponding water trap. This prevents the water seal in the water trap from directly contacting the first air inlet valve, avoids water seal blockage of the first air inlet valve, and ensures that when negative pressure occurs in the pipeline, outside air can enter normally through the first air inlet valve to balance the air pressure in the drainage branch pipe.

[0009] In some embodiments, the first air intake valve includes a valve seat, a valve cover, and a valve core. The valve cover is disposed on the valve seat, and the valve core is disposed on the valve seat. The valve cover has an air inlet hole corresponding to the valve core. The valve core includes a valve stem, a spring, and a sealing block. The valve seat has a vent hole and a mounting hole. One end of the valve stem is located below the mounting hole, and the other end extends upward through the mounting hole. The vent hole is located on the outer periphery of the mounting hole. The sealing block is sleeved on the valve stem and located below the vent hole. The spring is sleeved on the valve stem and located above the vent hole. Thus, by providing a valve seat, the entire unit can be easily fixed at the corresponding position of the drain pipe's trap. The spring and sealing block meet the sealing or air intake requirements of the first air intake valve under different operating conditions.

[0010] In some embodiments, the valve stem is T-shaped, with the larger end of the stem positioned above the vent. A horizontal plate is provided on the valve seat, with both the vent and mounting holes located on the horizontal plate. The top end of the spring abuts against the larger end of the valve stem, and the bottom end abuts against the horizontal plate. This structural design of the valve stem facilitates the installation of the spring.

[0011] In some embodiments, there are multiple vent holes, with partitions between adjacent vent holes. A limiting protrusion is provided below the horizontal plate, and the vent holes are located inside the limiting protrusions. The sealing block is located below the vent holes, and the outer periphery of the sealing block is tightly fitted against the inner wall of the limiting protrusion. Thus, by providing partitions, the overall strength can be ensured, and it is beneficial for the sealing block to fit tightly against the partitions.

[0012] In some embodiments, the lower end face of the baffle is inclined and gradually concave from the outside to the inside, while the upper end face of the sealing block is conical and fits against the lower end face of the baffle. This ensures that even under high positive pressure within the pipeline, the sealing block remains tightly fitted against the lower end face of the baffle, preventing separation between the sealing block and the vent, thus guaranteeing a sealing effect. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a drainage system that is resistant to strong winds, prevents odors, and prevents bacterial aerosol backflow according to this utility model.

[0014] Figure 2 This is a schematic diagram of the structure of the first air inlet valve in a drainage system that is resistant to strong winds, prevents odors and bacterial aerosol backflow, according to this utility model.

[0015] Figure 3 yes Figure 2 A cross-sectional structural diagram.

[0016] Figure 4 This is a schematic diagram of the structure of the first air inlet valve in a drainage system that is resistant to strong winds, prevents odors and bacterial aerosol backflow, according to one perspective of this utility model. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings.

[0018] Reference Figures 1-4 A drainage system resistant to strong winds, odors, and bacterial aerosol backflow includes a main drain pipe 1, a main vent pipe 2, drain branch pipes 3, vent branch pipes 4, a first air inlet valve 5, and a second air inlet valve 6. Multiple drain branch pipes 3 are connected to the main drain pipe 1. One end of the main vent pipe 2 is located outdoors, and the other end is connected to the main drain pipe 1. Each drain branch pipe 3 has a water trap 7 at its inlet end, and a corresponding first air inlet valve 5 is located at each water trap 7, positioned above the water seal in the water trap 7. One end of the vent branch pipe 4 is connected to the main vent pipe 2, and the other end is connected to the drain branch pipe 3. A second air inlet valve 6 is located at the connection point between the vent branch pipe 4 and the main vent pipe 2, and is located indoors.

[0019] In actual installation, both the main drain pipe 1 and the main vent pipe 2 can be installed on the exterior or interior of the building. The top of the main drain pipe 1 and one end of the main vent pipe 2 are located outdoors. The inlet end of each drain branch pipe 3, i.e. the end with the water trap 7, can be connected to commonly used indoor drain outlets such as the sink drain, kitchen sink drain, toilet drain, bathtub drain, and washing machine drain. The number of drain branch pipes 3 can be increased or decreased according to the actual number of drain outlets to meet different usage requirements.

[0020] When high-rise buildings drain water, the pressure on the drainage pipes of lower floors is relatively high. Therefore, when the positive pressure from the high-rise drainage is too great, the water seal of the trap 7 can easily be broken, causing harmful gases and bacterial aerosols in the pipes to backflow into the room. To solve this problem, a dedicated venting pipe, namely a main vent pipe 2, is installed for the drainage pipes. Therefore, when the high-rise drainage flows into the main drainage pipe 1, the high-pressure gas in the main drainage pipe 1 is directly discharged into the main vent pipe 2 and discharged to the outside through one end of the main vent pipe 2. This avoids excessive positive pressure at the drainage branch pipes 3 of the lower floors, preventing damage to the water seal of the trap 7. The water seal prevents odors and bacterial aerosols in the main drainage pipe 1 and drainage branch pipes 3 from backflowing into the room, reducing the spread of bacteria, viruses, etc.

[0021] By providing a first air inlet valve 5, when the corresponding drain branch pipe 3 is draining water, a negative pressure is easily formed in the drain pipe. At this time, the outside air pressure is relatively high, and outside air enters the corresponding drain branch pipe 3 through the first air inlet valve 5 to balance the air pressure in the drain branch pipe 3, preventing the excessive negative pressure from sucking away and damaging the water seal in the water trap, thus ensuring the sealing effect of the water seal. By incorporating a second air inlet valve 6, when high negative pressure occurs outdoors during strong winds, negative pressure is created in both the main vent pipe 2 and the main drain pipe 1 because one end of the main vent pipe 2 is located outdoors. At this time, the indoor pressure remains at normal atmospheric pressure. Indoor air enters the vent branch pipe 4 through the second air inlet valve 6. Since the second air inlet valve 6 is close to the main vent pipe 2, the air entering through the second air inlet valve 6 can quickly enter the main vent pipe 2, balancing the air pressure in the main vent pipe 2 and preventing high negative pressure from occurring in the main vent pipe 2. This prevents the negative pressure in the main vent pipe from damaging the water seal of the trap, avoids backflow of odors during strong winds, and improves the comfort of living.

[0022] Meanwhile, since the other end of the venting branch pipe 4 is connected to the drainage branch pipe 3, when the drainage branch pipe 3 connected to the venting branch pipe 4 forms a negative pressure during drainage, air can be drawn in through the venting branch pipe 4 to balance the air pressure at the drainage branch pipe 3, so that the air pressure at the corresponding drainage branch pipe 3 remains balanced.

[0023] The structure of the first intake valve 5 is the same as that of the second intake valve 6.

[0024] The first air inlet valve 5 is installed perpendicularly to the water trap 7, and the second air inlet valve 6 is installed perpendicularly to the vent branch pipe 4.

[0025] The first air inlet valve 5 is installed at a position on the water trap 7 that is at least 10cm higher than the highest point of the water seal of the corresponding water trap 7.

[0026] The first intake valve 5 includes a valve seat 51, a valve cover 52, and a valve core 53. The valve cover 52 covers the valve seat 51, and the valve core 53 is located on the valve seat 51. The valve cover 52 has an air inlet 521, which corresponds to the valve core 53. The valve core 53 includes a valve stem 531, a spring 532, and a sealing block 533. The valve seat 51 has a vent hole 511 and a mounting hole 512. One end of the valve stem 531 is located below the mounting hole 512, and the other end extends upward through the mounting hole 512. The vent hole 511 is located on the outer periphery of the mounting hole 512. The sealing block 533 is sleeved on the valve stem 531 and located below the vent hole 511. The spring 532 is sleeved on the valve stem 531 and located above the vent hole 511. The valve cover 52 and the valve seat 51 are both integrally injection molded structures.

[0027] The sealing block 533 can be made of rubber to meet the deformation and strength requirements of the sealing block under pressure. There are multiple air inlets 521, which helps to reduce the diameter of each individual air inlet 521 while still meeting the air intake requirements. When the diameter of the air inlet 521 is reduced, it can prevent mosquitoes and other insects from entering through the air inlet 521 to a certain extent, thereby preventing mosquitoes and other insects from entering between the vent 511 and the sealing block 533, thus helping to maintain the sealing effect of the sealing block 533.

[0028] When the pressure inside the drainage branch pipe 3 is greater than the external atmospheric pressure, that is, when the sealing block 533 is under positive pressure, the sealing block 533 adheres tightly to the vent 511 under the action of positive pressure, sealing the vent 511 and preventing odors, bacterial aerosols, etc. from being discharged into the room from the drainage pipe, thereby helping to reduce the spread of diseases through the drainage pipe.

[0029] When the drainage pipe is under negative pressure, outside air enters through the air inlet 521 under the action of atmospheric pressure. Under the action of air pressure, the sealing block 533 is pushed downward, releasing the sealing effect of the sealing block 533 on the vent 511, allowing outside air to enter the drainage pipe through the vent 511. This gradually balances the air pressure inside the drainage pipe with the atmospheric pressure, thus preventing the water seal in the trap from being destroyed under the negative pressure during drainage. In other words, it prevents the drainage pipe from destroying the water seal under the siphon effect. Therefore, it ensures that there is always a water seal at the trap, preventing bacteria and odors in the drainage pipe from entering the room through the pipe, thereby effectively reducing the spread of bacteria in the same building through the drainage pipe.

[0030] The valve seat 51 has an external thread on its outer side, which is used to install the water trap 7 and the corresponding drain branch pipe 3 through threaded connection, making installation convenient.

[0031] The valve stem 531 is T-shaped, with the large end of the valve stem 531 located above the vent hole 511. The valve seat 51 is provided with a horizontal plate 513, with the vent hole 511 and the mounting hole 512 both located on the horizontal plate 513. The top end of the spring 532 abuts against the large end of the valve stem 531, and the bottom end abuts against the horizontal plate 513.

[0032] There are multiple vent holes 511, with partitions 514 between adjacent vent holes 511. A limiting protrusion 515 is located below the horizontal plate 513, and the vent holes 511 are located inside the limiting protrusion 515. A sealing block 533 is located below the vent holes 511, and the outer periphery of the sealing block 533 is tightly fitted against the inner wall of the limiting protrusion 515. The vent holes 511 can be triangular, circular, or other shapes, as long as the air intake volume meets the requirements. The partitions 514 ensure the contact strength with the sealing block 533. With multiple vents 511, air entering through the air inlet can easily pass into the drainage pipe under air pressure, balancing the air pressure. When the negative pressure in the drainage pipe is -249 Pa, the air intake flow rate can reach 38.8 liters / minute; when the negative pressure in the drainage pipe is -504 Pa, the air intake flow rate can reach 59.6 liters / minute; and when the negative pressure in the drainage pipe is -12000 Pa, the air intake flow rate can reach 370 liters / minute, which is sufficient to meet the usage requirements. Therefore, it can be applied to building indoor drainage pipe systems, RVs, and mobile facilities such as ships and high-speed trains.

[0033] The lower end face of the partition 514 is inclined and gradually concave from the outside to the inside. The upper end face of the sealing block 533 is conical and fits against the lower end face of the partition 514. When the sealing block 533 is subjected to positive pressure, the upper end face of the sealing block 533 is pressed tightly against the lower end face of the partition 514, and the sealing block 533 deforms accordingly, pressing tightly against the vent 511. The edge of the sealing block 533 is pressed against the inner wall of the limiting protrusion 515, maintaining the sealing effect of the sealing block 533 on the vent 511. Under a relatively small positive pressure environment, with a 10 mm water column, there is no change in the water column after 15 minutes of sealing; with a 73 mm water column, there is no change in the water column after 24 hours of sealing; when the positive pressure reaches 65 kPa, there is no leakage of water column after 15 minutes, indicating a very good sealing effect.

[0034] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A drainage system resistant to strong winds, preventing odors and bacterial aerosol backflow, characterized in that, It includes a main drain pipe (1), a main vent pipe (2), a drain branch pipe (3), a vent branch pipe (4), a first vent valve (5), and a second vent valve (6). There are multiple drain branch pipes (3), all of which are connected to the main drain pipe (1). One end of the main vent pipe (2) is located outdoors, and the other end is connected to the main drain pipe (1). Each drain branch pipe (3) has a water trap (7) at its water inlet end. Each water trap (7) is equipped with a first vent valve (5). The first vent valve (5) is located above the water seal in the water trap (7). One end of the vent branch pipe (4) is connected to the main vent pipe (2), and the other end is connected to the drain branch pipe (3). A second vent valve (6) is provided at the connection between the vent branch pipe (4) and the main vent pipe (2). The second vent valve (6) is located indoors.

2. The drainage system according to claim 1, which is resistant to strong winds, prevents odors, and prevents bacterial aerosol backflow, is characterized in that, The structure of the first intake valve (5) is the same as that of the second intake valve (6).

3. The drainage system according to claim 2, which is resistant to strong winds, prevents odors, and prevents bacterial aerosol backflow, is characterized in that... The first air inlet valve (5) is installed perpendicular to the water trap (7), and the second air inlet valve (6) is installed perpendicular to the vent branch pipe (4).

4. The drainage system according to claim 3, which is resistant to strong winds, prevents odors, and prevents bacterial aerosol backflow, is characterized in that, The first air intake valve (5) is installed on the water trap (7) at a position at least 10cm higher than the highest point of the water seal of the corresponding water trap (7).

5. A drainage system resistant to strong winds, preventing odors and bacterial aerosol backflow, as described in any one of claims 2 to 4, characterized in that, The first intake valve (5) includes a valve seat (51), a valve cover (52), and a valve core (53). The valve cover (52) covers the valve seat (51), and the valve core (53) is located on the valve seat (51). The valve cover (52) has an air inlet (521) corresponding to the valve core (53). The valve core (53) includes a valve stem (531), a spring (532), and a sealing block (533). The valve seat (51) has a vent. The valve stem (531) has a hole (511) and a mounting hole (512). One end of the valve stem (531) is located below the mounting hole (512), and the other end extends upward through the mounting hole (512). The vent hole (511) is located on the outer periphery of the mounting hole (512). The sealing block (533) is sleeved on the valve stem (531) and located below the vent hole (511). The spring (532) is sleeved on the valve stem (531) and located above the vent hole (511).

6. A drainage system resistant to strong winds, preventing odors and bacterial aerosol backflow according to claim 5, characterized in that, The valve stem (531) is T-shaped, with the larger end of the valve stem (531) located above the vent hole (511). The valve seat (51) is provided with a horizontal plate (513), and the vent hole (511) and the mounting hole (512) are both located on the horizontal plate (513). The top end of the spring (532) abuts against the larger end of the valve stem (531), and the bottom end abuts against the horizontal plate (513).

7. A drainage system resistant to strong winds, preventing odors and bacterial aerosol backflow according to claim 6, characterized in that, There are multiple vent holes (511), and a partition (514) is provided between adjacent vent holes (511). A limiting protrusion (515) is provided below the horizontal plate (513). The vent holes (511) are located inside the limiting protrusion (515). The sealing block (533) is located below the vent holes (511). The outer periphery of the sealing block (533) is in close contact with the inner wall of the limiting protrusion (515).

8. A drainage system resistant to strong winds, preventing odors and bacterial aerosol backflow according to claim 7, characterized in that, The lower end face of the partition (514) is inclined and gradually concave from the outside to the inside. The upper end face of the sealing block (533) is conical and fits against the lower end face of the partition (514).

Images