Anti-reflux device for breather pipe of sewage system

Abstract

The utility model relates to the technical field of gas emission, and discloses a sewage system breather pipe anti-reflux device which comprises an exhaust shell, a first exhaust fan and a second exhaust fan are arranged in the exhaust shell, the first exhaust fan is arranged at an exhaust port, and the first exhaust fan can be driven by environmental wind through the first exhaust fan so as to exhaust odor in a pipe. And the second exhaust fan can actively rotate to exhaust gas in the pipe. The problem that odor cannot be exhausted when air pressure inside and outside a pipeline is unbalanced is solved, the shape of a traditional sewage exhaust pipe is improved, power is increased for gas in the exhaust pipe through rotation of fan blades, and the effect that the gas in the exhaust pipe can be smoothly exhausted in strong wind weather is achieved. By means of the two modes of driving the fan blades and not needing driving, and by means of built-in data monitoring equipment, whether gas is exhausted in the mode of driving the fan blades to rotate or not is accurately judged, and the practicability of the device is improved; and the problem of indoor odor caused by unsmooth exhaust of the sewage pipe under bad weather conditions can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas emission, in particular to a backflow prevention device for a ventilation pipe of a sewage system. Background Art

[0002] The sewage exhaust pipe refers to the ventilation pipe of the drainage system in a building, and the anti-backflow device refers to a device that prevents the gas in the ventilation pipe from flowing in reverse.

[0003] In conventional designs, there are two main forms of sewage exhaust pipe outlets: rainproof elbows and exhaust caps. The gas in the sewage pipe is discharged into the atmosphere along the exhaust pipe depending on the pressure difference.

[0004] There is a drawback in the actual application of the conventional exhaust pipe outlet: sometimes when the outdoor wind is too strong, the air pressure at the exhaust pipe outlet will be greater than the air pressure required for the gas exhaust pipe, resulting in the gas in the exhaust pipe being unable to be discharged. When enough gas accumulates in the pipe, it will flow back from the indoor floor drain, drain outlet and other places, causing odor in the room. Utility Model Content

[0005] To this end, the utility model provides a sewage system ventilation pipe backflow prevention device for solving the problem that odor cannot be discharged when the air pressure inside and outside the pipeline is unbalanced.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sewage system ventilation pipe backflow prevention device, comprising:

[0007] An exhaust housing, wherein a power source, an exhaust device and a monitoring device are arranged in the exhaust housing, and the power source is electrically connected to the exhaust device and the monitoring device;

[0008] A connecting ring, arranged at the bottom of the exhaust housing, through which the exhaust housing and the vent pipe are connected;

[0009] An exhaust port is provided on the top of the exhaust shell.

[0010] As a preferred technical solution of the utility model, the exhaust device includes a driving device, a first exhaust fan and a second exhaust fan, the first exhaust fan is arranged at the exhaust port position, the second exhaust fan is arranged at the bottom of the first exhaust fan, and the second exhaust fan is connected to the driving device.

[0011] As a preferred technical solution of the utility model, the driving device includes a driving motor, a transmission shaft and a rotating shaft, the driving motor is connected to the transmission shaft, and the transmission shaft is meshingly connected to the rotating shaft.

[0012] As a preferred technical solution of the utility model, the second exhaust fan includes second blades, a second impeller and a connecting shaft, the connecting shaft is connected to the rotating shaft, the second impeller is fixed to the connecting shaft, and the second impeller is provided with a plurality of second blades.

[0013] As a preferred technical solution of the utility model, the first exhaust fan includes first blades, a first impeller and a first rotating shaft, the first rotating shaft is connected to the first impeller, and the first impeller is provided with a plurality of the first blades.

[0014] As a preferred technical solution of the present utility model, the first blades are configured to be diamond-shaped, and each of the first blades is arranged in a circular shape and is vertically fixed on the first impeller.

[0015] As a preferred technical solution of the present utility model, the first impeller and the second impeller are configured to be cylindrical.

[0016] As a preferred technical solution of the utility model, the monitoring device includes a bus module, an air pressure sensor and a humidity sensor, and the bus module is connected to the air pressure sensor and the humidity sensor respectively.

[0017] As a preferred technical solution of the present utility model, the exhaust shell is made of PVC material.

[0018] As a preferred technical solution of the present utility model, the top of the exhaust housing is configured to be truncated cone-shaped.

[0019] The utility model has the following advantages:

[0020] Compared with the prior art, the utility model provides a sewage system ventilation pipe backflow prevention device, which has the following beneficial effects: improving the shape of the traditional sewage exhaust pipe, increasing power for the gas in the exhaust pipe through the rotation of the fan blades, and achieving the effect of smoothly discharging the gas in the exhaust pipe even in windy weather; driving the fan blades in two ways and not driving them, and having a built-in data monitoring device, accurately judging whether to drive the fan blades to rotate to discharge the gas, thereby improving the practicality of the device; and solving the problem of indoor odor caused by poor exhaust of the sewage pipe under adverse climatic conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 It is a structural side view of the utility model;

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0024] Figure 4 It is a side view of the cross-sectional structure of the utility model;

[0025] In the figure: 1. exhaust casing; 2. power supply; 3. connecting ring; 4. ventilation pipe; 5. exhaust port; 6. first exhaust fan; 7. second exhaust fan; 8. driving motor; 9. transmission shaft; 10. rotating shaft; 11. bus module; 12. air pressure sensor; 13. humidity sensor; 16. first fan blade; 26. impeller; 36. first rotating shaft; 17. second fan blade; 27. second rotating shaft. DETAILED DESCRIPTION

[0026] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Example

[0030] Reference Figure 1 , a sewage system ventilation pipe backflow prevention device, comprising:

[0031] An exhaust housing 1, wherein a power source 2, an exhaust device and a monitoring device are arranged in the exhaust housing 1, and the power source 2 is electrically connected to the exhaust device and the monitoring device;

[0032] A connecting ring 3 is arranged at the bottom of the exhaust housing 1, and the exhaust housing 1 and the vent pipe 4 are connected via the connecting ring 3;

[0033] Exhaust port: An exhaust port 5 is arranged on the top of the exhaust shell 1 .

[0034] Specifically, refer to Figure 2 The exhaust shell 1 and the vent pipe 4 are connected at one end and are set to be cylindrical. The circle diameter of the exhaust shell 1 is consistent with the circle diameter of the vent pipe 4. The circle diameter of the connecting ring 3 is slightly larger than the diameter of the exhaust shell 1 and the diameter of the vent pipe 4. The connecting ring 3 and the vent pipe 4 are fixed by a snap connection, so that the exhaust shell 1 and the vent pipe 4 are connected as a whole, which is used to discharge the gas in the vent pipe 4.

[0035] Specifically, a power protection box is provided inside the exhaust casing 1, and a power supply 2 is provided inside the power protection box. The power protection box can be used to place the power supply 2 and protect the power supply 2 from moisture, thereby ensuring normal power supply of the power supply 2 when the exhaust casing 1 encounters rainy weather.

[0036] Specifically, the exhaust shell 1 is made of PVC material, and its top is set to be a truncated cone. The exhaust port 5 is set at the truncated cone position on the top of the exhaust shell 1. The first exhaust fan 6 is set in the exhaust shell 1 and is located at the exhaust port 5. The first exhaust fan 6 here can drive the discharge of odor by rotating the fan; a second exhaust fan 7 is set in the exhaust shell 1 and directly below the first exhaust fan 6. The second exhaust fan 7 can actively rotate the fan to exhaust the odor in the pipe.

[0037] Specifically, refer to Figure 3 The second exhaust fan 7 is connected to a driving device, wherein the driving device includes a driving motor 8, a transmission shaft 9 and a rotating shaft 10. The driving motor 8 is connected to a power source 2, and the power source 2 is used to control the start or shut down of the driving motor 8 to provide power to the driving motor 8. The driving motor 8 is connected to a transmission shaft 9, and the other end of the transmission shaft 9 is meshedly connected to the rotating shaft 10, and the transmission shaft 9 and the rotating shaft 10 are arranged at a vertical angle.

[0038] The second exhaust fan 7 includes a second fan blade 17 and a second rotating shaft 27. One end of the second rotating shaft 27 is fixed to the rotating shaft 10. The driving motor 8 is started to drive the transmission shaft 9. The rotation of the transmission shaft 9 drives the rotating shaft 10 to rotate. The rotation of the rotating shaft 10 drives the second rotating shaft 27 and the second fan blade 17 to rotate, thereby generating wind pressure to actively discharge the odor or dirty gas in the pipe out of the pipe.

[0039] Specifically, refer to Figure 4, a bus module 11 is also provided, including an air pressure sensor 12 and a humidity sensor 13. The bus module 11 is connected to the power supply 2, and the power supply 2 provides power to the bus module 11. The bus module 11 is respectively connected to the air pressure sensor 12 and the humidity sensor 13. At the same time, the bus module 11 is also connected to the drive motor 8. The start or shut down of the drive motor 8 is controlled by the built-in system of the bus module 11. Its working process is to judge the air pressure inside and outside the pipe according to the detection data of the air pressure sensor 12. If the air pressure outside the pipe is greater than the air pressure inside the pipe, the odor cannot be discharged. At this time, the air pressure sensor 12 transmits the detection data to the bus module 11. After the built-in system of the bus module 11 judges the air pressure difference, the drive motor 8 is started to drive the second exhaust fan 7 to rotate, and the odor in the pipe is actively discharged; according to the detection data of the humidity sensor 13, it is judged whether the humidity data in the pipe rises due to rainy weather. When it rains, the drive motor 8 needs to be started through the bus module 11 to drive the second exhaust fan 7 to rotate to actively discharge the odor.

[0040] Specifically, the first exhaust fan 6 includes a first fan blade 16, an impeller 26 and a first rotating shaft 36, wherein the shaft of the first rotating shaft 36 is fixed at the center of the impeller 26, and the rotation of the first rotating shaft 36 can drive the impeller 26 to rotate, and a plurality of first fan blades 16 are arranged in a diamond leaf shape, arranged in a circle and vertically fixed to the outer ring of the impeller 26, and the impeller 26 is arranged in a cylindrical shape. Since the first exhaust fan 6 is arranged at the exhaust port 5, the design of the first fan blade 16 can be easily driven by the breeze in the environment to drive the first rotating shaft 36 to rotate, and the rotation of the first fan blade 16 can discharge the odor in the pipe when affected by the environment.

[0041] Working principle and advantages of this embodiment:

[0042] The exhaust casing 1 is fixed on the ventilation pipe 4 through the connecting ring 3, and the power supply 2 is installed. The power supply 2 is connected to the bus module 11. The bus module 11 is respectively connected to the drive motor 8, the air pressure sensor 12 and the humidity sensor 13. The bus module 11 has a built-in system to collect air pressure data and humidity data, and the drive motor 8 is started to drive the second exhaust fan 7 to rotate to actively exhaust the gas in the pipe.

[0043] Alternatively, by setting the first exhaust fan 6 at the position of the first exhaust port 5, the first fan blade 16 is set to be in a diamond-shaped shape. There is no need to drive the first exhaust fan 6. The first fan blade 16 can be rotated only by the influence of the ambient wind to exhaust the gas in the pipe.

[0044] This embodiment improves the shape of the traditional sewage exhaust pipe, and increases power for the gas in the exhaust pipe by the rotation of the fan blades, so that the gas in the exhaust pipe can be discharged smoothly even in windy weather; through two methods, one driving the fan blades and the other not driving, and with built-in data monitoring equipment, it can accurately determine whether to drive the fan blades to rotate to discharge the gas, thereby improving the practicality of the device; in order to solve the problem of indoor odor caused by poor sewage pipe exhaust under adverse weather conditions.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A sewage system ventilation pipe backflow prevention device, characterized in that: include: An exhaust housing (1), wherein a power source (2), an exhaust device and a monitoring device are arranged in the exhaust housing (1), and the power source (2) is electrically connected to the exhaust device and the monitoring device; A connecting ring (3) is arranged at the bottom of the exhaust casing (1), and the exhaust casing (1) and the vent pipe (4) are connected via the connecting ring (3); An exhaust port (5), the exhaust port (5) is arranged at the top of the exhaust housing (1).

2. The sewage system ventilation pipe backflow prevention device according to claim 1, characterized in that: The exhaust device comprises a driving device, a first exhaust fan (6) and a second exhaust fan (7); the first exhaust fan (6) is arranged at the exhaust port (5); the second exhaust fan (7) is arranged at the bottom of the first exhaust fan (6); and the second exhaust fan (7) is connected to the driving device.

3. The sewage system ventilation pipe backflow prevention device according to claim 2, characterized in that: The driving device comprises a driving motor (8), a transmission shaft (9) and a rotating shaft (10); the driving motor (8) and the transmission shaft (9) are connected, and the transmission shaft (9) and the rotating shaft (10) are meshingly connected.

4. The sewage system ventilation pipe backflow prevention device according to claim 3, characterized in that: The second exhaust fan (7) comprises second fan blades (17) and a connecting shaft (27), and the two ends of the connecting shaft (27) are respectively connected to the rotating shaft (10) and the second fan blades (17).

5. The sewage system ventilation pipe backflow prevention device according to claim 4, characterized in that: The first exhaust fan (6) comprises first blades (16), an impeller (26) and a first rotating shaft (36); the first rotating shaft (36) is connected to the impeller (26); and a plurality of the first blades (16) are arranged on the impeller (26).

6. The sewage system ventilation pipe backflow prevention device according to claim 5, characterized in that: The first blades (16) are configured to be diamond-shaped, and each of the first blades (16) is arranged in a circumference and vertically fixed on the impeller (26).

7. The sewage system ventilation pipe backflow prevention device according to claim 6, characterized in that: The impeller (26) is configured to be cylindrical.

8. The sewage system ventilation pipe backflow prevention device according to claim 7, characterized in that: The monitoring device comprises a bus module (11), an air pressure sensor (12) and a humidity sensor (13); the bus module (11) is connected to the air pressure sensor (12) and the humidity sensor (13) respectively.

9. The sewage system ventilation pipe backflow prevention device according to claim 1, characterized in that: The exhaust casing (1) is made of PVC material.

10. The sewage system ventilation pipe backflow prevention device according to claim 9, characterized in that: The top of the exhaust casing (1) is configured in a truncated cone shape.

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