Sewage collection device applied to aircraft

Abstract

The utility model provides a sewage collecting device applied to an aircraft, which comprises a main pipeline, a sewage collecting device, a sewage collecting device and a sewage collecting device, the pipe wall of the main pipeline is provided with a mounting hole, and the main pipeline is used for being mounted on a sewage discharging pipeline of a passenger transport aircraft; the sampling rod is detachably mounted at the mounting hole, and during sampling, the sampling end of the sampling rod extends into the main pipeline so as to sample the to-be-sampled liquid flowing through the main pipeline. According to the utility model, the main pipeline is mounted on the sewage discharge pipeline, and the sampling rod is detachably arranged on the mounting hole, so that the sampling end can extend into the main pipeline for sampling, and the sewage can be sampled without crossing in the sewage discharge process of the passenger aircraft; sewage of different aircrafts is effectively distinguished and collected, preparation is made for later laboratory detection, and the problems of inaccurate sampling liquid and inaccurate detection results due to the fact that the currently collected sewage is mixed, flushed and diluted liquid are solved.

Description

Technical Field

[0001] This utility model relates to the field of sample collection technology, and more specifically, to a wastewater collection device for use in aircraft. Background Technology

[0002] Passenger aircraft generate a large amount of wastewater every day, including toilet wastewater and drinking water residue, which may contain harmful substances such as bacteria and viruses.

[0003] By monitoring wastewater on individual passenger aircraft, relevant departments involved in joint prevention and control of the epidemic can obtain timely information on the levels of bacteria and viruses in the wastewater, enabling them to more accurately assess the development of the epidemic and strengthen epidemic monitoring and response.

[0004] Currently, water tanks on passenger aircraft are discharged into sewage trucks through pipelines. After discharge, the water tanks are flushed, and finally, the residual water in the pipeline is sampled. This means that the sampled liquid is the diluted liquid after flushing, resulting in a low concentration of harmful substances in the sampled liquid, inaccurate results, and the possibility of detection failure or missed detection. Summary of the Invention

[0005] In view of this, the present invention proposes a wastewater collection device for aircraft, which aims to solve the problem that the existing wastewater collection is a diluted liquid after rinsing, resulting in inaccurate sampling and detection results.

[0006] This utility model proposes a wastewater collection device for aircraft. The device includes: a main pipe with an installation hole on its wall, the main pipe being installed on the sewage pipe of a passenger aircraft; and a sampling rod, which is detachably installed at the installation hole. During sampling, the sampling end of the sampling rod extends into the main pipe to sample the liquid flowing through the main pipe.

[0007] Furthermore, in the aforementioned wastewater collection device, the sampling rod includes: a sampling shell; a sampling cover, which is detachably installed at one end of the sampling shell, the sampling shell and the sampling cover forming a sealed cavity; a sampling rod body, which passes through the sampling shell along its axial direction, and the sampling rod body is slidably and sealingly connected to the inner wall of the sampling shell; in the sampling state, the sampling cover is removed, and the sampling end of the sampling rod body slides to one side of the sampling shell for sampling; and in the non-sampling state, the sampling cover is installed on the sampling shell to form a sealed cavity, and the sampling end of the sampling rod body is sealed into the sealed cavity.

[0008] Furthermore, in the aforementioned wastewater collection device, the sampling rod body includes: a handle; a filter cover disposed on one side of the handle and connected to the handle; and sampling cotton disposed inside the filter cover for sampling the liquid to be sampled.

[0009] Furthermore, in the aforementioned wastewater collection device, the handle has a handheld portion at the handheld end away from the filter cover.

[0010] Furthermore, in the aforementioned wastewater collection device, a sampling sealing ring is fitted on the outer wall of the sampling rod body, which is slidably and sealingly connected to the inner wall of the sampling shell.

[0011] Furthermore, in the above-mentioned wastewater collection device, the connecting end of the sampling shell is provided with an installation sealing ring, the sampling cover is detachably and sealingly installed on the installation sealing ring, and / or, the sampling shell is detachably and sealingly installed on the main pipeline through the installation sealing ring, so as to sample the liquid to be sampled in the main pipeline.

[0012] Furthermore, in the aforementioned wastewater collection device, a diversion component is provided on the inner wall of the main pipe. The diversion component is located upstream of the mounting hole and is used to divert the liquid to be sampled so that the liquid to be sampled is diverted to the sampling rod body, and to guide the solid waste in the liquid to be sampled to the other side to avoid the sampling rod body.

[0013] Furthermore, in the aforementioned wastewater collection device, the wall of the main pipe protrudes outward at its middle position, forming a large-cavity collection chamber inside the main pipe. The mounting hole is located in the large-cavity collection chamber so that the sampling end of the sampling rod is placed inside the large-cavity collection chamber; or, the inner diameter at the middle position of the main pipe is larger than the inner diameters at both ends, forming a large-diameter collection chamber in the middle. The mounting hole is located in the large-diameter collection chamber so that the sampling end of the sampling rod is placed inside the large-diameter collection chamber.

[0014] Furthermore, the aforementioned sewage collection device is equipped with a mounting cover at the mounting hole, which is detachably connected to the mounting hole for sealing the mounting hole; an anti-drop connecting rope is provided between the mounting cover and the main pipe.

[0015] Furthermore, the aforementioned sewage collection device also includes a handrail on the main pipeline.

[0016] The wastewater collection device provided by this utility model is installed on the sewage pipe of a passenger aircraft via a main pipeline. A sampling rod is detachably mounted on the mounting hole, allowing the sampling end to extend into the main pipeline for sampling. This enables cross-sampling of wastewater during passenger aircraft sewage discharge, effectively distinguishing and collecting wastewater from different aircraft, thus preparing for subsequent laboratory testing. This device boasts advantages such as low cost, simple operation, and good sample collection results. It allows for convenient replacement, effective differentiation, and rapid collection of wastewater from individual aircraft, fundamentally solving the problem that existing wastewater collection methods use mixed and diluted liquids, leading to inaccurate sampling and test results. Attached Figure Description

[0017] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0018] Figure 1 A schematic diagram of a wastewater collection device for aircraft provided in an embodiment of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the sewage collection device provided in an embodiment of the present utility model;

[0020] Figure 3 A cross-sectional view of the sewage collection device provided in an embodiment of this utility model;

[0021] Figure 4 This is a schematic diagram of the sewage collection device provided in another direction according to an embodiment of the present utility model;

[0022] Figure 5 This is a schematic diagram of the sampling rod in a non-sampling state provided in an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the sampling rod in the sampling state provided in an embodiment of the present invention;

[0024] Figure 7 This is a cross-sectional view of the sampling rod in a non-sampling state, as provided in an embodiment of the present invention. Detailed Implementation

[0025] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, embodiments and features of the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] See Figures 1 to 4 The figure illustrates a preferred structure of a wastewater collection device for aircraft provided by an embodiment of the present invention. As shown, the wastewater collection device includes: a main pipe 1, a sampling rod 2, a drainage assembly 3, and a mounting cover (not shown in the figure); wherein,

[0027] The main pipe 1 has a mounting hole 11 on its wall. The main pipe 1 is used to install on the sewage pipe of a passenger aircraft (not shown in the figure). The sampling rod 2 is detachably mounted on the mounting hole 11 for use during sampling. Figure 1 The lower left end (as shown) extends into the main pipe 1 to sample the liquid to be sampled flowing through the main pipe 1.

[0028] Specifically, the main pipe 1 has an installation hole 11 on its wall, providing an insertion channel for the sampling rod 2, allowing the sampling rod 2 to be inserted into the main pipe 1 through the installation hole 11. The axis of the installation hole 11 can be angled with the radial direction of the main pipe 1, allowing the sampling rod 2 to be inserted into the main pipe 1 at an angle. The main pipe 1 can be connected to the sewage discharge pipeline between the water tank on a passenger aircraft and the ground sewage truck, serving as part of the sewage discharge pipeline. This allows sewage to flow through the main pipe 1 and the sewage discharge pipeline to the sewage truck, where it is sampled by the sampling rod 2 inserted into the main pipe 1. In this embodiment, the sampling rod 2 is detachably connected to the main pipe 1. During sampling, especially during sewage discharge and before water tank flushing, the sampling rod 2 is inserted into the main pipe 1 through the installation hole, partially extending into the main pipe 1, particularly the sampling end. After sampling, the sampling rod 2 can be removed from the installation hole 11 to avoid secondary contamination during subsequent flushing and ensure sampling accuracy. In this embodiment, the sewage pipe between the water tank on the passenger aircraft and the sewage truck on the ground is generally a flexible hose. To facilitate the installation of the main pipe 1, the sewage pipe and the sampling rod 2, preferably, a handrail 12 can be provided on the main pipe 1.

[0029] The drainage component 3 is disposed on the inner wall of the main pipe 1, and the drainage component 3 is located upstream of the mounting hole 11 (e.g., Figure 1 The upper side (as shown) is used to guide the liquid to be sampled, so that the liquid to be sampled is guided to the sampling rod 2, ensuring the effectiveness of the sampling. Of course, the drainage component 3 is also used to guide solid contaminants in the liquid to be sampled, so that they are guided to the other side (such as...). Figure 1 (As shown on the left), to avoid sampling rod 2 and prevent solid dirt from impacting sampling rod 2 and causing it to fall.

[0030] Specifically, the drainage component 3 is disposed on the inner wall of the main pipe 1, and can be positioned upstream of the mounting hole 11 to drain the liquid to be sampled, especially when the flow rate of the liquid to be sampled is small, it can be positioned along the side wall where the mounting hole 11 is located (e.g., Figure 1 The flow is directed to the right wall shown, ensuring that the liquid to be sampled can flow down from the sampling rod 2, thus ensuring the effectiveness of the sampling by the sampling rod 2, even when the flow rate of the liquid to be sampled is small. In this embodiment, the drainage component 3 can also guide solid contaminants in the liquid to be sampled to the other side (e.g., the right wall shown), thereby ensuring that the liquid to be sampled can flow down from the sampling rod 2, thus ensuring the effectiveness of the sampling by the sampling rod 2, even when the flow rate of the liquid to be sampled is small. Figure 1 (As shown on the left), to avoid sampling rod 2 and prevent solid dirt from impacting sampling rod 2 and causing it to fall.

[0031] The mounting cap is detachably connected to the mounting hole 11 to seal the mounting hole 11 when not sampling. Specifically, the mounting cap and sampling rod 2 are optionally installed at the mounting hole 11. During sampling, the sampling rod 2 is installed at the mounting hole 11, and the sampling end can extend into the main pipe 1 for sampling. In non-sampling states, such as after sampling or when sampling is not required, the mounting cap can be installed at the mounting hole 11 to seal the mounting hole 11, thereby preventing sewage leakage when the main pipe 1 discharges wastewater. In this embodiment, an anti-drop connecting rope can be provided between the mounting cap and the main pipe 1 to prevent the mounting cap from falling off. In particular, during sampling, the mounting cap can be removed from the mounting hole 11 and hooked onto the main pipe 1 to prevent the mounting cap from falling off or being lost. Preferably, as Figure 4 As shown, the main pipe 1 is provided with a rope connection hole 13. One end of the anti-drop connection rope is connected to the rope connection hole 13, and the other end is connected to the installation cover.

[0032] See also Figures 1 to 2The liquid to be sampled contains a large amount of excrement and other impurities. To avoid clogging, the wall of the main pipe 1 protrudes outward at its middle position, forming a pipe wall protrusion structure 14. A large cavity collection chamber is formed inside the middle position of the main pipe 1. The mounting hole 11 is located in the large cavity collection chamber so that the sampling end of the sampling rod is placed inside the large cavity collection chamber. Specifically, at least one side of the wall of the main pipe 1 bends outward to form a spherical pipe wall protrusion structure 14. The middle position of the main pipe 1 has a larger space than the two ends, forming a large cavity collection chamber. The spherical pipe wall protrusion structure 14 and the mounting hole 11 can be arranged opposite each other so that the spherical pipe wall protrusion structure 14 and the sampling rod 2 are placed on both sides, so that the spherical pipe wall protrusion structure 14 can avoid solid impurities in the sewage and prevent solid impurities from clogging the sampling point of the sampling rod 2. Therefore, the cooperation between the drainage device 3 and the protruding structure 14 on the pipe wall allows solid debris to flow along the protruding structure 14, preventing solid debris from clogging and impacting the sampling rod 2, thus ensuring the effectiveness of the sampling. Of course, in other embodiments, the inner diameter at the middle position of the main pipe 1 is larger than the inner diameters at both ends, forming a large-diameter sampling cavity in the middle. The mounting hole 11 is located in this large-diameter sampling cavity so that the sampling end of the sampling rod 2 is placed inside the large-diameter sampling cavity.

[0033] See also Figure 2 The main pipe 1 may have anti-slip sealing grooves at both ends to increase the friction between the main pipe 1 and the sewage pipe, providing stability and sealing between the two. In this embodiment, the main pipe 1 and the sewage pipe can be connected by an anti-detachment buckle.

[0034] In this embodiment, the drainage assembly 3 may include a plurality of spaced-apart finned protrusions. The finned protrusions may be disposed on the upper side of the mounting hole 11. The finned protrusions can drain the liquid to be sampled, and at the same time, can prevent solid debris larger than the spacing between the finned protrusions from passing through, so that the solid debris passes through from the other side of the drainage assembly 3, that is, the side where the protruding structure 14 on the pipe wall is located.

[0035] See also Figure 2 , Figure 3 , Figures 5 to 7 The sampling rod 2 includes a sampling shell 21, a sampling rod body 22, and a sampling cover 23.

[0036] The sampling cover 23 is detachably mounted on one end of the sampling shell 21 (e.g., Figure 5 (As shown on the left end), the sampling shell 21 and the sampling cover 23 form a sealed cavity; the sampling rod body 22 is along the axial direction of the sampling shell 21 (e.g., ... Figure 7The sampling rod body 22 (as shown in the horizontal direction) is inserted through the sampling shell 21, and the sampling rod body 22 is slidably and sealed to the inner wall of the sampling shell 21; in the sampling state, the sampling cover 23 is removed, and the sampling end of the sampling rod body 22 (as shown in the horizontal direction) is inserted through the sampling shell 21, and the sampling rod body 22 is slidably and sealed to the inner wall of the sampling shell 21; Figure 6 The lower left end (as shown) slides to one side of the sampling shell 21 (e.g., Figure 6 (as shown on the lower left side) to extend into the main pipe 1 for sampling; and in the non-sampling state, the sampling cover 23 is sealed on the sampling shell 21, and the collection end of the sampling rod body 23 is sealed into the sealed cavity.

[0037] Specifically, the sampling shell 21 is a hollow tubular structure, and its length can be determined based on the sampling rod body 22. The connecting end of the sampling shell 21 (e.g., Figure 5 The sampling shell 21 (shown on the left) is detachably connected to the sampling cover 23. In particular, the connecting end of the sampling shell 21 can be connected to the sampling cover 23 and the mounting hole 11 of the main pipe 1 in an alternative manner. That is to say, the connecting end of the sampling shell 21 can be detachably connected not only to the sampling cover 23, but also to the mounting hole 11 of the main pipe 1. The middle position of the sampling rod body 22 can be slidably sealed to the inner wall of the sampling shell 21, which not only realizes the relative sliding between the two, but also realizes the sealing of the right end of the sampling shell 21.

[0038] Before sampling, the sampling cover 23 is installed at the connecting end of the sampling shell 21. The sampling cover 23, the sampling shell 21 and the sampling rod body 22 can form a sealed cavity so that the sampling end of the sampling rod body 22 is sealed in the sealed cavity, protecting the sampling end of the sampling rod body 22 and avoiding contamination of the sampling end of the sampling rod body 22. During sampling, the sampling cover 23 can be removed, and the sampling shell 21 and the sampling rod body 22 can be installed together on the mounting hole 11 of the main pipe 1, thus achieving the installation between the main pipe 1 and the sampling rod 2. By sliding the sampling rod body 22, the sampling end of the sampling rod body 22, especially the sampling area, can slide out to the outside of the sampling shell 21 to extend into the main pipe 1 for sampling. In particular, it can be extended into the main pipe 1 to collect mid-section sewage after a portion of the sewage has flowed out. After sampling is completed, by sliding the sampling rod body 22, the sampling end of the sampling rod body 22, especially the sampling area, can slide into the sampling shell 21. After the sewage has flowed out, the sampling shell 21 can be removed from the mounting hole 11 of the main pipe 1, and the sampling cover 23 can be installed at the connection end of the sampling shell 21 to seal the sampling end of the sampling rod body 22, preventing the collected liquid from dripping out and isolating it from secondary contamination. The sliding of the sampling rod body 22 enables the collection of mid-section sewage, which helps to avoid interference factors such as pipe residues and improves the accuracy of sampling.

[0039] See also Figure 3 , Figure 6 and Figure 7 The sampling shell 21 has a sealing ring 24 at its connecting end. The sampling cover 23 is detachably and sealingly installed on the sealing ring 24. The sampling shell 22 can also be detachably and sealingly installed on the main pipeline 1 via the sealing ring 24 to sample the liquid to be sampled in the main pipeline 1. That is, the sampling shell 21 can also be installed at the mounting hole 11 via the sealing ring 24. In this embodiment, the connecting end of the sampling shell 21 is connected to the sampling cover 23 and the mounting hole 11 by compression through the sealing ring 24 to achieve sealing and fixation.

[0040] See also Figure 7 A sampling sealing ring 25 is fitted on the outer wall of the sampling rod body 22, which is slidably and sealingly connected to the inner wall of the sampling shell 21. Specifically, a sampling sealing ring 25 can be fitted on the outer wall at the middle position of the sampling rod body 22, which is slidably and sealingly connected to the inner wall of the sampling shell 21. This can seal the sampling shell 21 and also allow sliding to adjust the position of the sampling end of the sampling rod body 22.

[0041] See also Figures 2 to 7 The sampling rod body 22 may include: a handle 221, a filter cover 222, and a sampling cotton 223; wherein, the filter cover 222 is disposed on one side of the handle 221 (e.g., Figure 6 (as shown on the lower left side) and connected to the handle 221; the sampling cotton 223 is disposed inside the filter cover 222 for sampling the liquid to be sampled.

[0042] Specifically, the handle 221 and the filter cover 222 can be an integral structure, or they can be connected in other ways; this embodiment does not impose any limitations on this. The sampling cotton 223 can have a certain degree of hydrophilicity, which can maximize the accumulation of sewage. In this embodiment, the sampling sealing ring 25 is sleeved on the connection end of the handle 221 near the filter cover 222 (e.g., Figure 7 On the left end shown, a sliding seal can be achieved between the handle 221 and the inner wall of the sampling shell 21. In this embodiment, the handle 221 is located away from the handheld end of the filter cover 222 (e.g., the left end shown). Figure 7 The right end shown is provided with a hand-held part 2211 to facilitate the sliding of the sampling rod body 22 relative to the sampling shell 21.

[0043] The working principle of this wastewater collection device is as follows: Screw the sampling rod 2 onto the main pipe 1 of the collection device. Connect the device to the sewage discharge pipe between the aircraft water tank and the wastewater truck. By pushing the handle 221, the filter cover 222 and sampling cotton 223 extend into the large-cavity collection chamber of the main pipe 1. When wastewater is discharged, it passes through the wastewater collection device and accumulates on the sampling cotton 223 inside the sampling rod 2, thus collecting the wastewater. After the aircraft has finished draining, especially before rinsing, remove the sampling rod 2. A new sampling rod 2 can be installed for sampling on the next aircraft, or the installation cap can be screwed on without affecting the next wastewater discharge. Of course, this device can also be installed on other pipelines to sample wastewater and liquids discharged from other equipment.

[0044] In summary, the wastewater collection device for aircraft provided in this embodiment is installed on the sewage discharge pipeline via the main pipe 1, and the sampling rod 2 is detachably installed in the mounting hole 11. This allows the sampling end to extend into the interior of the main pipe 1 for sampling, enabling cross-sampling of wastewater during passenger aircraft wastewater discharge. This effectively distinguishes and collects wastewater from different aircraft, preparing for subsequent laboratory testing. This device has advantages such as low cost, simple operation, and good sample collection results. It allows for convenient replacement, effective differentiation, and rapid collection of wastewater from individual aircraft, fundamentally solving the problem that existing wastewater collection methods use diluted, rinsed liquids, leading to inaccurate sampling and test results.

[0045] It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0046] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0047] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A wastewater collection device for aircraft, characterized in that, include: The main pipe has mounting holes on its wall and is used for installation on the sewage pipe of a passenger aircraft. The sampling rod is detachably installed at the mounting hole. During sampling, the sampling end of the sampling rod extends into the main pipe to sample the liquid to be sampled flowing through the main pipe.

2. The sewage collection device according to claim 1, characterized in that, The sampling rod includes: Sampling shell; A sampling cover is detachably mounted on one end of the sampling shell, and the sampling shell and the sampling cover form a sealed cavity; The sampling rod body is inserted through the sampling shell along the axial direction of the sampling shell, and the sampling rod body is slidably and sealingly connected to the inner wall of the sampling shell; in the sampling state, the sampling cover is removed, and the collection end of the sampling rod body slides to one side of the sampling shell for sampling; and in the non-sampling state, the sampling cover is installed on the sampling shell to form a sealed cavity, and the collection end of the sampling rod body is sealed into the sealed cavity.

3. The sewage collection device according to claim 2, characterized in that, The sampling rod body includes: handle; A filter cover is disposed on one side of the handle and connected to the handle; A sampling cotton, placed inside the filter cover, is used to sample the liquid to be sampled.

4. The sewage collection device according to claim 3, characterized in that, The handle has a hand-held portion at the hand-held end away from the filter cover.

5. The sewage collection device according to claim 2, characterized in that, A sampling sealing ring is fitted on the outer wall of the sampling rod body, and it is slidably sealed to the inner wall of the sampling shell.

6. The sewage collection device according to claim 2, characterized in that, The sampling shell is provided with a mounting sealing ring at its connecting end, and the sampling cover is detachably and sealingly installed on the mounting sealing ring. Alternatively, the sampling shell is detachably and sealingly installed on the main pipeline via the mounting sealing ring to sample the liquid to be sampled in the main pipeline.

7. The wastewater collection device according to any one of claims 1 to 6, characterized in that, The inner wall of the main pipe is provided with a flow-guiding component, which is located upstream of the mounting hole. The flow-guiding component is used to guide the liquid to be sampled to the sampling rod body and to guide the solid contaminants of the liquid to be sampled to the other side to avoid the sampling rod body.

8. The wastewater collection device according to any one of claims 1 to 6, characterized in that, The wall of the main pipe protrudes outward at its middle position, forming a large cavity sampling chamber inside the main pipe. The mounting hole is located in the large cavity sampling chamber so that the sampling end of the sampling rod is placed inside the large cavity sampling chamber. or, The inner diameter at the middle position of the main pipe is larger than the inner diameters at both ends, forming a large-diameter sampling cavity in the middle. The mounting hole is set at the large-diameter sampling cavity so that the sampling end of the sampling rod is placed inside the large-diameter sampling cavity.

9. The wastewater collection device according to any one of claims 1 to 6, characterized in that, The mounting hole is also provided with a mounting cover, which is detachably connected to the mounting hole for sealing the mounting hole; A safety rope is provided between the mounting cover and the main pipe to prevent it from falling off.

10. The wastewater collection device according to any one of claims 1 to 6, characterized in that, The main pipeline is also equipped with handrails.

Images