Pollution discharge device and odor removal system

By using a liquid level detection sensor and an electric valve in the sewage discharge device, the problem of odor removal solution overflowing due to sewage outlet blockage was solved, realizing automated sewage discharge control, protecting the production environment and improving sewage discharge efficiency.

CN224308125UActive Publication Date: 2026-06-02CHINA TOBACCO ZHEJIANG IND CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINA TOBACCO ZHEJIANG IND CO LTD
Filing Date
2025-07-14
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

When the sewage outlet becomes blocked, the deodorizing solution in the sewage tank will overflow, polluting the surrounding production environment.

Method used

A sewage discharge device is adopted, including a sewage discharge tank, an inlet pipe, an electric valve, a liquid level detection sensor, and a controller. The liquid level detection sensor detects the solution level. When the warning level is reached, the controller controls the electric valve to close the inlet pipe to prevent the deodorizing solution from entering the sewage discharge tank and avoid overflow.

Benefits of technology

It effectively prevents the odor-removing solution from overflowing, protects the production environment, reduces human intervention, and improves sewage discharge efficiency.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224308125U_ABST
    Figure CN224308125U_ABST
Patent Text Reader

Abstract

This utility model relates to the field of odor-removing solution discharge technology, specifically to a sewage discharge device and an odor removal system. The sewage discharge tank can hold the odor-removing solution, and a sewage outlet is provided at the bottom of the tank, with a filter element installed at the outlet. An inlet pipe is fixedly connected to the side wall of the sewage discharge tank. An electric valve is installed on the inlet pipe and can open or close it. A liquid level detection sensor is connected to the sewage discharge tank. The liquid level detection sensor is signal-connected to a controller. The controller is signal-connected to the electric valve. When the liquid level detection sensor detects that the odor-removing solution level has reached a warning level, it sends a warning message to the controller. The controller then controls the electric valve to operate, and the electric valve quickly closes the inlet pipe. This prevents the odor-removing solution in the odor removal equipment from entering the sewage discharge tank, thus preventing the amount of odor-removing solution in the tank from increasing and overflowing, thereby preventing the odor-removing solution from polluting the surrounding production environment.
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Description

Technical Field

[0001] This utility model relates to the field of odor removal solution discharge technology, specifically to a sewage discharge device and an odor removal system. Background Technology

[0002] During cigarette production, it is necessary to remove odors from the tobacco. In this process, odor removal equipment sprays an odor-removing solution onto the tobacco. This solution absorbs the odors; after absorbing the odors, the solution is returned to the equipment for further spraying. With this continuous circulation of the odor-removing solution, the odors from the tobacco are absorbed, resulting in a purer flavor.

[0003] However, during the process of returning the odor-removing solution to the odor-removing equipment, tobacco impurities from the tobacco will mix into the solution. Furthermore, as the odor-removing solution continues to circulate, the amount of tobacco impurities in the solution increases, eventually rendering the solution unusable. Therefore, it is necessary to periodically remove the unusable odor-removing solution from the equipment and add new odor-removing solution.

[0004] The odor removal equipment's drain outlet is connected to a wastewater tank. Odor removal solution that has lost its usability is discharged into the wastewater tank, and then the solution in the wastewater tank is discharged from the wastewater tank's drain outlet. Because the odor removal solution contains a large amount of tobacco impurities, these impurities frequently clog the wastewater tank's drain outlet. As the odor removal solution from the equipment is gradually discharged into the wastewater tank, and after the drain outlet becomes clogged, the odor removal solution in the wastewater tank overflows outside the tank, thus polluting the surrounding production environment. Utility Model Content

[0005] The purpose of this invention is to solve the following technical problem: when the sewage outlet is blocked, the deodorizing solution in the sewage tank will overflow to the outside of the sewage tank, thereby polluting the surrounding production environment.

[0006] To achieve the above objectives, this utility model provides a sewage discharge device, which includes a sewage discharge tank, an inlet pipe, an electric valve, a liquid level detection sensor, and a controller. The sewage discharge tank can hold an odor-removing solution, and a discharge port for discharging the odor-removing solution is provided at the bottom of the sewage discharge tank. A filter element for filtering tobacco impurities is provided at the discharge port. The inlet pipe is fixedly connected to the side wall of the sewage discharge tank and is configured to allow the odor-removing solution in the odor-removing device to be discharged into the sewage discharge tank. The electric valve is installed on the inlet pipe and can open or close the inlet pipe. The liquid level detection sensor is connected to the sewage discharge tank and is used to detect the liquid level of the odor-removing solution in the sewage discharge tank. The liquid level detection sensor is signal-connected to the controller so that the liquid level detection sensor can send liquid level information of the odor-removing solution to the controller. The controller is signal-connected to the electric valve so that the controller can control the electric valve to open or close the inlet pipe. When the liquid level detection sensor detects that the liquid level of the odor-removing solution has reached a warning level, the liquid level detection sensor sends a warning message to the controller, and the controller controls the electric valve to close the inlet pipe based on the warning message.

[0007] In some embodiments, the inlet end of the inlet pipe can be connected to the outlet of the odor removal device, the outlet end of the inlet pipe is located in the sewage tank, and the electric valve is installed on the inlet pipe and located outside the sewage tank.

[0008] In some embodiments, the outlet end of the inlet pipe faces the center of the bottom wall of the sewage tank.

[0009] In some embodiments, the inlet pipe passes through the side wall of the sewage tank and is fixedly connected to the side wall of the sewage tank.

[0010] In some embodiments, the side wall of the sewage tank is provided with an installation hole for the liquid inlet pipe to pass through, the installation hole being higher than the warning liquid level, and the liquid level detection sensor being higher than the installation hole.

[0011] In some embodiments, the sewage discharge device further includes a mounting rod connected to the bottom wall of the sewage tank, and the mounting rod is configured to extend vertically, with a liquid level detection sensor fixedly mounted on the mounting rod.

[0012] In some embodiments, the drain outlet is located between the mounting rod and the outlet end of the inlet pipe.

[0013] In some embodiments, the filter element includes a cylindrical body and a circular top plate, the top plate being installed at an opening at the top of the body, and the opening at the bottom of the body communicating with a drain outlet; the bottom of the body is detachably connected to a drain tank; the body and the top plate are provided with a plurality of filter holes, the diameter of which is not greater than the diameter of the Hackett ball.

[0014] In some embodiments, the bottom of the cylinder is threaded to the outer periphery of the drain port.

[0015] This utility model also provides an odor removal system, which includes an odor removal device and a sewage tank as described in the above embodiment. The drain outlet of the odor removal device is connected to the sewage tank through an inlet pipe.

[0016] The above-mentioned technical solution of this utility model has the following beneficial effects:

[0017] When the liquid level sensor detects that the level of the deodorizing solution has reached the warning level, the sensor sends a warning message to the controller. The controller then controls the electric valve based on this warning message. The electric valve quickly closes the inlet pipe, preventing the deodorizing solution from entering the wastewater tank. As a result, the amount of deodorizing solution in the wastewater tank will not increase, thus preventing overflow and contamination of the surrounding production environment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a sewage discharge device in one embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of a filter element in one embodiment of the present invention.

[0020] Explanation of reference numerals in the attached figures

[0021] 1. Sewage tank; 11. Sewage outlet; 12. Discharge pipe; 13. Shut-off valve;

[0022] 2. Inlet pipe; 21. Inlet end; 22. Outlet end;

[0023] 3. Electric valve;

[0024] 4. Liquid level detection sensor;

[0025] 5. Controller;

[0026] 6. Filter element; 61. Cylinder body; 62. Top plate; 63. Filter holes;

[0027] 7. Install the rod;

[0028] 8. Odor removal equipment. Detailed Implementation

[0029] The features and exemplary embodiments of various aspects of this utility model will now be described in detail. To make the objectives, technical solutions, and advantages of this utility model clearer, the following description, in conjunction with the accompanying drawings and specific embodiments, will provide a further detailed description. It should be understood that the specific embodiments described herein are intended only to explain this utility model and not to limit it. For those skilled in the art, this utility model can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this utility model by illustrating examples of it.

[0030] like Figure 1 As shown, this utility model provides a sewage discharge device, which includes a sewage discharge tank 1, an inlet pipe 2, an electric valve 3, a liquid level detection sensor 4, and a controller 5. The sewage discharge tank 1 can hold an odor-removing solution, and the bottom of the sewage discharge tank 1 is provided with a sewage outlet 11 for discharging the odor-removing solution. A filter element 6 for filtering tobacco impurities is provided at the sewage outlet 11. The inlet pipe 2 is fixedly connected to the side wall of the sewage discharge tank 1, and the inlet pipe 2 is configured to allow the odor-removing solution in the odor removal device 8 to be discharged into the sewage discharge tank 1. The electric valve 3 is installed on the inlet pipe 2 and can open or close the inlet pipe 2. The liquid level detection sensor 4 is connected to the sewage discharge tank 1 and is used to detect the liquid level of the odor-removing solution in the sewage discharge tank 1. The liquid level detection sensor 4 is signal-connected to the controller 5 so that the liquid level detection sensor 4 can send the liquid level information of the odor-removing solution to the controller 5. The controller 5 is signal-connected to the electric valve 3 so that the controller 5 can control the electric valve 3 to open or close the inlet pipe 2. When the liquid level sensor 4 detects that the liquid level of the deodorizing solution has reached the warning level, the liquid level sensor 4 sends a warning message to the controller 5, and the controller 5 controls the electric valve 3 to close the inlet pipe 2 based on the warning message.

[0031] Specifically, when the odor-removing solution in the odor-removing device 8 needs to be discharged into the sewage tank 1, the electric valve 3 is opened, and the odor-removing solution in the odor-removing device 8 can be discharged into the sewage tank 1 through the inlet pipe 2. At the same time, the odor-removing solution in the sewage tank 1 will also be discharged out through the drain outlet 11. The liquid level detection sensor 4 can send the liquid level information of the odor-removing solution to the controller 5 in real time. As the odor-removing solution is discharged, more and more tobacco impurities will gradually accumulate at the filter element 6 until the filter element 6 is completely blocked by tobacco impurities. However, at this time, the odor-removing solution is still continuously entering the sewage tank 1 from the odor-removing device 8, so the liquid level of the odor-removing solution in the sewage tank 1 will gradually rise until it reaches the warning level. When the level sensor 4 detects that the level of the deodorizing solution has reached the warning level, it sends a warning message to the controller 5. The controller 5 then controls the electric valve 3 to operate based on this warning message. The electric valve 3 quickly closes the inlet pipe 2, preventing the deodorizing solution in the deodorizing equipment 8 from entering the wastewater tank 1. The amount of deodorizing solution in the wastewater tank 1 will not increase, thus preventing overflow and contamination of the surrounding production environment. At this point, on-site personnel only need to clean the tobacco impurities from the filter element 6 to restore its unobstructed flow, and the wastewater tank 1 can resume normal wastewater discharge.

[0032] In this embodiment, when the liquid level detection sensor 4 detects that the liquid level of the deodorizing solution has reached the warning level, the liquid level detection sensor 4 sends a warning message to the controller 5. The controller 5 controls the operation of the electric valve 3 according to the warning message. The electric valve 3 quickly closes the inlet pipe 2, so the deodorizing solution in the deodorizing device 8 will no longer enter the sewage tank 1, and the deodorizing solution in the sewage tank 1 will not increase. Therefore, the deodorizing solution in the sewage tank 1 will not overflow, preventing the deodorizing solution from polluting the surrounding production environment.

[0033] In addition, thanks to the use of electric valve 3, liquid level detection sensor 4 and controller 5, the inlet pipe 2 can be quickly sealed, which is more timely and efficient than manual handling.

[0034] It should be noted that the electric valve 3 is a common valve device in this field. This utility model only provides a brief introduction to the electric valve 3. For the detailed structure and operating principle of the electric valve 3, those skilled in the art can refer to existing technologies. The electric valve 3 includes a manual control part and an electric control part. The manual control part is used for manual operation, while the electric control part is driven by the drive part of the electric valve 3. Both the manual control part and the electric control part can control the operation of the valve core of the electric valve 3. When it is necessary to discharge the deodorizing solution in the deodorizing device 8, the operator can manually operate the manual control part of the electric valve 3. The valve core of the electric valve 3 rotates, the inlet pipe 2 opens, and the deodorizing solution in the deodorizing device 8 can enter the sewage tank 1. When the deodorizing solution in the deodorizing device 8 has been discharged, the operator can manually operate the manual control part of the electric valve 3. The valve core of the electric valve 3 rotates in the opposite direction, and the inlet pipe 2 is closed. Of course, the on-site operator can also send an open or close command to the controller 5 so that the controller 5 controls the electric valve 3 to open or close. Those skilled in the art can determine whether to use controller 5 or manually control the opening and closing of electric valve 3 based on the site conditions; this utility model does not impose any restrictions.

[0035] It should also be noted that the controller 5 can be a programmable logic controller, PLC, or microcontroller commonly used in the market. The controller 5 can issue corresponding action commands to the electric valve 3 according to the feedback signal. The specific control method of the controller 5 is not within the scope of the improvement of this utility model and will not be described in detail here.

[0036] In some embodiments, the sewage tank 1 is a box-shaped structure with an opening at the top. The sewage tank 1 has a bottom wall and four side walls connected to the bottom wall. These four side walls are sequentially connected end-to-end to form a rectangular tube. Workers can observe the level of the deodorizing solution through the opening and can also enter the sewage tank 1 through the opening. A sewage outlet 11 is located on the bottom wall. Preferably, the bottom wall of the sewage tank 1 is provided with a discharge pipe 12, and the discharge pipe 12 is equipped with a shut-off valve 13.

[0037] In other embodiments, the sewage tank 1 may be a cylindrical or hemispherical box, etc., and this utility model does not impose any limitations.

[0038] like Figure 1 As shown, in some embodiments of this utility model, the inlet end 21 of the inlet pipe 2 can be connected to the outlet of the odor removal device 8, the outlet end 22 of the inlet pipe 2 is located in the sewage tank 1, and the electric valve 3 is installed on the inlet pipe 2 and located outside the sewage tank 1.

[0039] Specifically, through this setup, the odor-removing solution in the odor removal device 8 can be easily introduced into the sewage tank 1 through the inlet pipe 2.

[0040] like Figure 1 As shown, in some embodiments of this utility model, the outlet end 22 of the inlet pipe 2 faces the center of the bottom wall of the sewage tank 1.

[0041] Specifically, with this configuration, the outlet end 22 is far from the side wall of the sewage tank 1, which helps to prevent the flowing deodorizing solution from splashing onto the outside of the sewage tank 1, thereby avoiding the deodorizing solution from polluting the surrounding production environment.

[0042] like Figure 1 As shown, in some embodiments of this utility model, the liquid inlet pipe 2 passes through the side wall of the sewage tank 1, and the liquid inlet pipe 2 is fixedly connected to the side wall of the sewage tank 1.

[0043] Specifically, near the side wall of the sewage tank 1, the inlet pipe 2 extends in a straight line and passes directly through the side wall of the sewage tank 1. This arrangement shortens the overall length of the inlet pipe 2, reduces the number of bends, allows the odor-removing solution to flow smoothly, and prevents tobacco impurities in the odor-removing solution from clogging the inlet pipe 2.

[0044] like Figure 1 As shown, in some embodiments of this utility model, the side wall of the sewage tank 1 is provided with an installation hole for the liquid inlet pipe 2 to pass through. The installation hole is higher than the warning liquid level, and the liquid level detection sensor 4 is higher than the installation hole.

[0045] Specifically, the liquid level sensor 4 is positioned high to ensure accurate detection of the odor-removing solution level. A seal is formed between the edge of the mounting hole and the inlet pipe 2.

[0046] like Figure 1 As shown, in some embodiments of this utility model, the sewage discharge device further includes an installation rod 7, which is connected to the bottom wall of the sewage discharge tank 1 and is configured to extend vertically. The liquid level detection sensor 4 is fixedly installed on the installation rod 7.

[0047] Specifically, when filter element 6 is clogged and there is a large amount of deodorizing solution in sewage tank 1, staff need to enter sewage tank 1 for cleaning to quickly restore sewage discharge. However, the bottom wall of sewage tank 1 is relatively smooth, and staff may slip. In this case, staff can hold onto the mounting rod 7 with one hand to ensure stable movement in sewage tank 1. Therefore, the mounting rod 7 mainly provides a safe support for staff movement and cleaning operations, preventing slips. In addition, by fixing the liquid level detection sensor 4 to the mounting rod 7, it helps the liquid level detection sensor 4 to comprehensively and accurately detect the liquid level of the deodorizing solution.

[0048] like Figure 1 As shown, in some embodiments of this utility model, the drain outlet 11 is located between the mounting rod 7 and the outlet end 22 of the inlet pipe 2.

[0049] Specifically, the mounting rod 7 is positioned close to the drain outlet 11, facilitating safe movement and cleaning operations for staff. Preferably, projected vertically downwards, the drain outlet 11 is located between the mounting rod 7 and the outlet end 22 of the inlet pipe 2.

[0050] like Figure 1 and Figure 2 As shown, in some embodiments of this utility model, the filter element 6 includes a cylindrical body 61 and a circular top plate 62. The top plate 62 is installed at the opening at the top of the body 61, and the opening at the bottom of the body 61 is connected to the drain outlet 11. The bottom of the body 61 is detachably connected to the sewage tank 1. The body 61 and the top plate 62 are provided with a plurality of filter holes 63, and the diameter of the filter holes 63 is not greater than the diameter of the Hackett sphere.

[0051] Specifically, a Hakken ball is a common spherical component used for uniform gas-liquid distribution, and it needs to be installed in the odor removal device 8. However, sometimes the Hakken ball may be discharged from the odor removal device 8 along with the odor removal solution. The Hakken ball must be recycled. A sewage discharge tank 1 is located downstream of the odor removal device 8, primarily to facilitate the recycling of the Hakken ball by staff (the Hakken ball can be retrieved from the sewage discharge tank 1), preventing it from directly entering the downstream wastewater treatment equipment. Therefore, the diameter of the filter holes 63 is no larger than the diameter of the Hakken ball to prevent it from leaving the sewage discharge tank 1, thus facilitating timely recycling.

[0052] In addition, the filter element 6 includes a cylindrical body 61 and a circular top plate 62. Compared with setting the filter element 6 as a flat plate, this shape of the filter element 6 can have a larger filtration surface, so it is not easy to be clogged and the number of times the staff needs to unclog it is minimized.

[0053] In some embodiments, the filter element 6 may also be a circular filter screen or a hemispherical filter plate, etc., and the present invention does not impose any limitations.

[0054] like Figure 1 and Figure 2 As shown, in some embodiments of this utility model, the bottom of the cylinder 61 is threadedly connected to the outer periphery of the drain port 11.

[0055] Specifically, the outer periphery of the discharge outlet 11 defines the discharge outlet 11, and the outer periphery of the discharge outlet 11 is part of the bottom wall of the sewage tank 1. The outer periphery of the discharge outlet 11 is provided with internal threads, and the outer periphery of the bottom of the cylinder 61 is provided with external threads, and the two are connected by threads. Due to the use of threaded connection, workers can easily disassemble and install, which is highly convenient.

[0056] In some embodiments, the bottom of the cylinder 61 and the sewage tank 1 can be detachably connected in other ways, and this utility model does not impose any limitations. For example, the bottom of the cylinder 61 can be clamped into the outer periphery of the sewage outlet 11 by an interference fit.

[0057] like Figure 1 As shown, this utility model also provides an odor removal system, which includes an odor removal device 8 and a sewage discharge device as described in the above embodiment. The discharge port of the odor removal device 8 is connected to the sewage tank 1 through the inlet pipe 2.

[0058] Specifically, when the odor-removing solution in the odor-removing device 8 needs to be discharged into the sewage tank 1, the electric valve 3 is opened, and the odor-removing solution in the odor-removing device 8 can be discharged into the sewage tank 1 through the inlet pipe 2. At the same time, the odor-removing solution in the sewage tank 1 will also be discharged out through the drain outlet 11. The liquid level detection sensor 4 can send the liquid level information of the odor-removing solution to the controller 5 in real time. As the odor-removing solution is discharged, more and more tobacco impurities will gradually accumulate at the filter element 6 until the filter element 6 is completely blocked by tobacco impurities. However, at this time, the odor-removing solution is still continuously entering the sewage tank 1 from the odor-removing device 8, so the liquid level of the odor-removing solution in the sewage tank 1 will gradually rise until it reaches the warning level. When the level sensor 4 detects that the level of the deodorizing solution has reached the warning level, it sends a warning message to the controller 5. The controller 5 then controls the electric valve 3 to operate based on this warning message. The electric valve 3 quickly closes the inlet pipe 2, preventing the deodorizing solution in the deodorizing equipment 8 from entering the wastewater tank 1. The amount of deodorizing solution in the wastewater tank 1 will not increase, thus preventing overflow and contamination of the surrounding production environment. At this point, on-site personnel only need to clean the tobacco impurities from the filter element 6 to restore its unobstructed flow, and the wastewater tank 1 can resume normal wastewater discharge.

[0059] In this embodiment, the odor removal system uses the sewage discharge device described in the above embodiment, so it can also achieve the above-mentioned technical effects.

[0060] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above are only preferred embodiments of this utility model. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this utility model, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of this utility model to other occasions without modification, should all be considered within the protection scope of this utility model.

Claims

1. A sewage discharge device, characterized in that, Includes a sewage tank (1), an inlet pipe (2), an electric valve (3), a liquid level detection sensor (4), and a controller (5); The sewage tank (1) is capable of holding the deodorizing solution. A drain outlet for discharging the deodorizing solution is provided at the bottom of the sewage tank (1), and a filter element (6) for filtering tobacco impurities is provided at the drain outlet. The inlet pipe (2) is fixedly connected to the side wall of the sewage tank (1), and the inlet pipe (2) is configured to allow the deodorizing solution in the deodorizing device (8) to be discharged into the sewage tank (1). The electric valve (3) is installed on the inlet pipe (2) and can open or close the inlet pipe. 2) The liquid level detection sensor (4) is connected to the sewage tank (1) and is used to detect the liquid level of the deodorizing solution in the sewage tank (1); the liquid level detection sensor (4) is signal-connected to the controller (5) so that the liquid level detection sensor (4) can send the liquid level information of the deodorizing solution to the controller (5); the controller (5) is signal-connected to the electric valve (3) so that the controller (5) can control the electric valve (3) to open or close the inlet pipe (2); When the liquid level detection sensor (4) detects that the liquid level of the deodorizing solution has reached the warning level, the liquid level detection sensor (4) sends a warning message to the controller (5), and the controller (5) controls the electric valve (3) to close the inlet pipe (2) based on the warning message.

2. The sewage discharge device according to claim 1, characterized in that, The inlet end (21) of the inlet pipe (2) can be connected to the outlet of the odor removal device (8), the outlet end (22) of the inlet pipe (2) is located in the sewage tank (1), and the electric valve (3) is installed on the inlet pipe (2) and located outside the sewage tank (1).

3. The sewage discharge device according to claim 2, characterized in that, The outlet end (22) of the inlet pipe (2) is oriented toward the center of the bottom wall of the sewage tank (1).

4. The sewage discharge device according to claim 2, characterized in that, The inlet pipe (2) passes through the side wall of the sewage tank (1) and is fixedly connected to the side wall of the sewage tank (1).

5. The sewage discharge device according to claim 4, characterized in that, The side wall of the sewage tank (1) is provided with an installation hole for the liquid inlet pipe (2) to pass through. The installation hole is higher than the warning liquid level, and the liquid level detection sensor (4) is higher than the installation hole.

6. The sewage discharge device according to claim 1, characterized in that, The sewage discharge device also includes an installation rod (7), which is connected to the bottom wall of the sewage discharge tank (1) and is configured to extend vertically. The liquid level detection sensor (4) is fixedly installed on the installation rod (7).

7. The sewage discharge device according to claim 6, characterized in that, The drain outlet (11) is located between the mounting rod (7) and the outlet end (22) of the inlet pipe (2).

8. The sewage discharge device according to claim 1, characterized in that, The filter element (6) includes a cylindrical body (61) and a circular top plate (62). The top plate (62) is installed at the opening at the top of the cylindrical body (61), and the opening at the bottom of the cylindrical body (61) is connected to the sewage outlet (11). The bottom of the cylindrical body (61) is detachably connected to the sewage tank (1). The cylindrical body (61) and the top plate (62) are provided with a plurality of filter holes (63), and the diameter of the filter holes (63) is not greater than the diameter of the Hackett ball.

9. The sewage discharge device according to claim 8, characterized in that, The bottom of the cylinder (61) is threaded to the outer periphery of the drain port (11).

10. An odor removal system, characterized in that, It includes an odor removal device (8) and a sewage tank (1) according to any one of claims 1-9, wherein the drain outlet of the odor removal device (8) is connected to the sewage tank (1) through the inlet pipe (2).