Sampling device used in front of coarse screen of sewage plant

Abstract

The utility model belongs to the technical field of sewage sampling devices, and particularly relates to a sampling device used in front of a coarse screen of a sewage plant, which comprises a water suction pump mounted on the ground beside a sewage wellhead, the water suction end of the water suction pump is connected with a water inlet pipeline, and the water outlet end of the water suction pump is connected with a water outlet pipeline. A water outlet of the water outlet pipeline is arranged above the well lid, a U-shaped filter is arranged on the water inlet pipeline, a water taking pipeline extending into the sewage well to take water is communicated with the rear portion of the U-shaped filter, the sampling room is arranged on one side of the water suction pump, a water sampler is placed in the sampling room, sewage in the sewage well is pumped out through the water suction pump for sampling, and the sampling room is connected with the water inlet pipeline. And through arrangement of the U-shaped filter, large impurities are filtered, and the pipeline can be cleaned to avoid blockage.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage sampling devices, in particular to a sampling device used in front of a coarse screen in a sewage plant. Background Art

[0002] Municipal wastewater treatment is crucial to urban modernization. Wastewater comes from a variety of sources, including domestic sewage, industrial wastewater, and runoff. Before treatment, sampling and analysis are necessary to develop efficient and effective treatment processes. However, traditional wastewater sampling methods are time-consuming and labor-intensive, making them difficult to meet practical needs. Therefore, specialized sewage well sampling devices are required.

[0003] Existing sewage well sampling devices still have some shortcomings. For example, most water sampling equipment has a simple support frame, which can easily cause the equipment to tip over when encountering irregular road surfaces. The sampling port of the water sampling box requires direct contact with the sampler to seal, and cannot be sealed quickly and without direct contact. The filter screen of most sampling equipment water sampling boxes is fixed, which is prone to clogging after long-term use and cannot be quickly disassembled and replaced. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides a sampling device for use in front of the coarse screen of a sewage treatment plant. The sewage in the sewage well is pumped out for sampling by a water pump. The large debris is filtered out through the set U-shaped filter, and the pipeline can also be cleaned to avoid blockage, thereby solving the problem that the traditional sewage sampling method is time-consuming and labor-intensive during the sampling process and is difficult to meet actual needs.

[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions: a sampling device for use in front of a coarse screen in a sewage treatment plant, comprising a water pump installed on the ground next to a sewage wellhead, the water pumping end of the water pump being connected to an inlet pipe, the water outlet end of the water pump being connected to an outlet pipe, the outlet of the outlet pipe being arranged above the well cover, the water inlet pipe being provided with a U-shaped filter, the rear of the U-shaped filter being connected to a water intake pipe extending into the sewage well to take water, and also comprising a sampling room arranged on one side of the water pump, wherein a water sampler is placed inside the sampling room.

[0006] Preferably, the water intake pipeline is composed of at least two water intake pipes, and each two adjacent water intake pipes are connected to a connecting pipe.

[0007] Preferably, the connecting pipe includes a pipe body, both ends of which are connected to an upper connecting pipe and a lower connecting pipe, and inner walls of outer ends of the upper connecting pipe and the lower connecting pipe are both provided with internal threads.

[0008] Preferably, a hexagonal tightening section is provided in the middle of the pipe body.

[0009] Preferably, both ends of the water intake pipe are provided with external threads, and the water intake pipe and the connecting pipe are fixedly connected by threads.

[0010] Preferably, a tee is provided in the middle of the U-shaped bottom of the U-shaped filter, both ends of the tee are connected to the water inlet pipe, and the other end of the tee is connected to the cleaning pipe.

[0011] Preferably, the manhole cover is made of metal and is provided with a plurality of openings.

[0012] Preferably, the sampling room is a square structure, and a sliding door is provided on one side of the sampling room.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: sewage in the sewage well is pumped out for sampling by a water pump, large debris is filtered out by the set U-shaped filter, and the pipeline can also be cleaned to avoid blockage.

[0014] Through the interconnected water intake pipes, sewage with low water levels in the sewage well can be pumped out for sampling.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the three-dimensional structure of a sampling device used in front of the coarse screen of a sewage treatment plant Figure 1 ;

[0017] Figure 2 A schematic diagram of the three-dimensional structure of a sampling device used in front of the coarse screen of a sewage treatment plant Figure 2 ;

[0018] Figure 3 A schematic diagram of the three-dimensional structure of a sampling device used in front of the coarse screen of a sewage treatment plant Figure 3 ;

[0019] Figure 4 This is an exploded view of the three-dimensional structure of the water intake pipe of a sampling device used in front of the coarse screen of a sewage treatment plant;

[0020] Figure 5 This is a schematic diagram of the three-dimensional structure of the connecting pipe of a sampling device used in front of the coarse screen of a sewage treatment plant.

[0021] In the figure: 1. Water pump; 2. Water inlet pipe; 3. Water outlet pipe; 4. U-shaped filter; 41. Tee pipe; 42. Cleaning pipe; 5. Manhole cover; 51. Opening; 6. Water intake pipe; 61. Water intake pipe; 611. External thread; 62. Connecting pipe; 621. Pipe body; 622. Upper connecting pipe; 623. Lower connecting pipe; 624. Internal thread; 625. Tightening section; 7. Sampling room; 8. Water sampler; 9. Sliding door. DETAILED DESCRIPTION

[0022] The following describes the embodiments of the present utility model in detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the present utility model and are not intended to limit the scope of the present utility model. All other embodiments obtained by persons of ordinary skill in the art without inventive effort are intended to fall within the scope of protection of the present utility model.

[0023] Combine Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, a sampling device for use in front of a coarse screen in a sewage treatment plant includes a water pump 1 installed on the ground next to a sewage wellhead, the water pumping end of the water pump 1 is connected to an inlet pipe 2, the water outlet end of the water pump 1 is connected to an outlet pipe 3, the outlet of the outlet pipe 3 is arranged above a well cover 5, a U-shaped filter 4 is provided on the water inlet pipe 2, the rear of the U-shaped filter 4 is connected to a water intake pipe 6 extending into the sewage well to take water, and also includes a sampling room 7 arranged on one side of the water pump 1, and a water sampler 8 is placed inside the sampling room 7.

[0024] This utility model provides a sampling device for use in front of a coarse screen at a sewage treatment plant. A water pump 1, installed on the ground near the sewage wellhead, serves as the power source for the entire sampling device and is used to extract sewage. An inlet pipe 2, connected at one end to the pump's pumping port, delivers sewage into the pump. An outlet pipe 3, connected at one end to the pump's outlet port, has an outlet located above the wellhead cover 5 for discharging the sewage pumped by the pump.

[0025] The water intake pipe 6 is connected to the water inlet pipe 2 and extends into the sewage well for drawing water from the sewage well. The U-shaped filter 4 is arranged on the water inlet pipe 2, behind the point where the water intake pipe 6 connects to the water inlet pipe 2. The U-shaped filter 4 filters larger impurities and particles in the sewage to prevent impurities from entering the water pump 1 and subsequently affecting the normal operation of the water sampler 8. It is also necessary to observe whether water is pumped up when the water pump 1 is started. The pump can also be primed during routine cleaning of the pipeline. The sampling room 7 is arranged on the side of the water pump 1 to provide a placement space for the water sampler 8, which plays a role in protection and isolation. The water sampler 8 is placed inside the sampling room 7 and is used to sample the extracted sewage.

[0026] Start pump 1 and begin operating. Under the suction force generated by pump 1, sewage flows from the sewage well through the extended intake pipe 6 into the inlet pipe 2. As it flows through the inlet pipe 2, the sewage passes through a U-shaped filter 4, which filters out larger impurities and particles, preventing them from entering the pump 1 and potentially affecting the proper functioning of the water sampler 8. The filtered sewage continues through the inlet pipe 2 to the pump 1, then enters the outlet pipe 3 from the pump's outlet, ultimately discharging through the outlet of the outlet pipe 3, located above the manhole cover 5. After discharge, the sewage flows back into the sewage well or through another designated discharge path. During the sewage extraction process, operators can use a water sampler 8, located inside the sampling room 7, to collect a sample of the initially filtered sewage from an appropriate location in the inlet pipe 2 for subsequent water quality analysis and other testing. The sampling room 7 provides a relatively stable and safe environment for the water sampler 8, preventing external factors from interfering with or damaging the sampling process and the sampling equipment.

[0027] Combine Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, the water intake pipeline 6 is composed of at least two water intake pipes 61 spliced ​​together, and each two adjacent water intake pipes 61 are connected to a connecting pipe 62.

[0028] Specifically, the water intake pipeline 6 is composed of at least two spliced ​​water intake pipes 61. These water intake pipes 61 constitute the main body of the water intake pipeline 6. Each water intake pipe 61 has a specific length and diameter. The specific dimensions can be designed and selected based on factors such as actual water intake needs, installation space, and water pressure. The material of the water intake pipe 61 generally needs to have good corrosion resistance and pressure resistance to adapt to the environment of conveying complex media such as sewage. Common materials include PVC and stainless steel.

[0029] Each pair of adjacent water intake pipes 61 is connected by a connecting pipe 62. The function of the connecting pipe 62 is to connect adjacent water intake pipes 61, forming a continuous channel throughout the entire water intake pipeline 6, thereby ensuring smooth sewage transportation. The specifications and model of the connecting pipe 62 must match the water intake pipe 61 to ensure a tight and stable connection. The connecting pipe 62 may use various connection methods, such as threaded connections, flange connections, and clamp connections, depending on factors such as the material of the water intake pipe 61, the usage scenario, and installation requirements.

[0030] By splicing at least two water intake pipes 61 and connecting adjacent water intake pipes 61 with connecting pipes 62, a complete water intake pipeline 6 is formed. In a typical sewage well network, sampling from the last well is the most representative. This well is very deep. Based on the water level in the well, the water intake pipes 61 are spliced ​​together with connecting pipes 62 so that their bottoms extend below the water surface, providing a transport channel for sewage from the water intake point (such as a sewage well) to subsequent treatment equipment or sampling points.

[0031] Combine Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, the connecting pipe 62 includes a pipe body 621 , and an upper connecting pipe 622 and a lower connecting pipe 623 are connected to both ends of the pipe body 621 . The inner walls of the outer ends of the upper connecting pipe 622 and the lower connecting pipe 623 are both provided with internal threads 624 .

[0032] Specifically, the pipe body 621 serves as the primary connector and support. It has a specific length and diameter, and its dimensions are designed to match the dimensions of the connected water intake pipe 61 to ensure a stable and well-sealed overall structure, meeting the requirements for sewage transport.

[0033] The upper connecting tube 622 is connected to one end of the tube body 621. Its shape and size match those of the tube body 621, and its outer end is provided with internal threads 624 on its inner wall. These threads are designed to facilitate threaded connection with components with external threads 611. This connection method offers advantages such as easy installation and removal and a tight connection.

[0034] The lower connecting pipe 623 is connected to the other end of the pipe body 621, opposite the upper connecting pipe 622. The structure and function of the lower connecting pipe 623 are similar to those of the upper connecting pipe 622. Similarly, the inner wall of its outer end is provided with internal threads 624 for threaded connection with corresponding components. Through the upper connecting pipe 622 and the lower connecting pipe 623, the connecting pipe 62 can connect two adjacent water intake pipes 61, forming a continuous water intake pipeline 6.

[0035] Combine Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, a hexagonal tightening section 625 is provided in the middle of the tube body 621 .

[0036] Specifically, a hexagonal tightening section 625 is positioned in the middle of the pipe body 621. This hexagonal shape facilitates tightening operations using tools (such as wrenches). The hexagonal structure allows tools to better grip the tightening section 625, applying sufficient torque to ensure a secure and reliable connection between the connecting pipe 62 and adjacent components (such as the water intake pipe 61).

[0037] When splicing the water intake pipes 6, the ends of the two water intake pipes 61 to be connected are machined into external threads 611 that mate with the internal threads 624 of the connecting pipe 62. Align the upper connecting pipe 622 and the lower connecting pipe 623 of the connecting pipe 62 with the ends of the two adjacent water intake pipes 61. At this point, the operator can use a tool such as a wrench to clamp the hexagonal tightening section 625 in the center of the pipe body 621. By rotating the wrench, the connecting pipe 62 rotates, causing the internal threads 624 to engage with the external threads 611 at the ends of the water intake pipes 61. As the wrench continues to rotate, the connecting pipe 62 is gradually tightened until the connection is tight, ensuring no sewage leaks.

[0038] Once connected, the two adjacent water intake pipes 61 are connected by the connecting pipe 62, forming a continuous sewage transport channel. Sewage can flow smoothly from one water intake pipe 61 through the connecting pipe 62 into the other, enabling long-distance sewage transport. During the transport process, the tight fit between the internal threads 624 of the connecting pipe 62 and the external threads 611 of the water intake pipe 61, along with the secure connection ensured by the hexagonal tightening section 625, ensures a tight and stable connection, preventing sewage leakage and ensuring the normal operation of the water intake pipe 6.

[0039] Combine Figure 2 、 Figure 3 、 Figure 4 and Figure 5As shown, both ends of the water intake pipe 61 are provided with external threads 611, and the water intake pipe 61 is fixedly connected to the connecting pipe 62 through threads.

[0040] Specifically, both ends of the water intake pipe 61 are provided with external threads 611. These external threads 611 are key components for connecting to the connecting pipe 62. Their specifications and dimensions must match those of the internal threads 624 on the connecting pipe 62 to ensure a tight and stable connection. The water intake pipe 61 is typically constructed from materials with excellent corrosion and pressure resistance, such as stainless steel or PVC, to accommodate the transport of complex media like sewage.

[0041] Combine Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, a three-way pipe 41 is provided in the middle of the U-shaped bottom of the U-shaped filter 4. Both ends of the three-way pipe 41 are connected to the water inlet pipe 2, and the other end of the three-way pipe 41 is connected to the cleaning pipe 42.

[0042] Specifically, the U-shaped filter body increases the flow path and residence time of the wastewater during the filtration process, thereby improving the filtration effect. The U-shaped structure is usually equipped with a filter medium to intercept impurities and particles in the wastewater.

[0043] The tee pipe 41 is set in the middle of the U-shaped bottom of the U-shaped filter 4. The tee pipe 41 is a pipe with three interfaces, and its two ends are connected to the water inlet pipe 2. Sewage can flow into the tee pipe 41 through the water inlet pipe 2 and then enter the U-shaped filter 4 for filtration.

[0044] The cleaning pipe 42 is connected to the other end of the tee pipe 41. When the U-shaped filter 4 needs to be cleaned, it introduces a cleaning medium (such as clean water or cleaning fluid) to remove impurities accumulated inside the U-shaped filter 4 during the filtration process and restore the filtration effect. The diameter and length of the cleaning pipe 42 are designed based on actual cleaning needs and installation space, and its material must also have good corrosion resistance.

[0045] Sewage flows into the water inlet pipe 2 and enters the interior of the tee pipe 41 through both ends of the tee pipe 41. Since both ends of the tee pipe 41 are connected to the water inlet pipe 2, the sewage can smoothly pass through the tee pipe 41 and enter the U-shaped structure of the U-shaped filter 4.

[0046] Within the U-shaped structure, impurities and particles in the sewage are intercepted by the filter medium. The relatively clean sewage, after filtration, flows out of the outlet of the U-shaped filter 4 and continues into the subsequent piping system, such as the pump 1 and the outlet pipe 3, ensuring normal sewage transportation and treatment. When a certain amount of impurities accumulate within the U-shaped filter 4, causing a decrease in filtration efficiency, cleaning is required. At this time, the valve between the inlet pipe 2 and the U-shaped filter 4 is closed to prevent sewage from entering the U-shaped filter 4.

[0047] The cleaning medium is introduced through the cleaning pipe 42, enters the other end of the tee pipe 41, and then flows in the reverse direction into the U-shaped structure of the U-shaped filter 4. The reverse flow of the cleaning medium can flush away impurities attached to the filter medium and the inner wall of the U-shaped structure, and discharge the impurities from the outlet of the U-shaped filter 4 or a dedicated sewage outlet.

[0048] After cleaning is complete, close the valve of cleaning pipe 42 and open the valve between water inlet pipe 2 and U-shaped filter 4 to resume normal sewage filtration. This regular cleaning method can ensure the filtration effect of U-shaped filter 4, extend its service life, and ensure the normal operation of the entire sewage sampling device.

[0049] Combine Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the manhole cover 5 is made of metal and is provided with a plurality of openings 51 .

[0050] Specifically, manhole cover 5 is the main component of the entire structure and is made of metal. This metal material provides manhole cover 5 with high strength and durability, allowing it to withstand certain pressures and weights, such as those from pedestrians and brief runs by small vehicles. It is also resistant to environmental damage, such as rain and sunlight, ensuring that manhole cover 5 is not easily damaged during long-term use. Common metal materials used for manhole covers 5 include cast iron and stainless steel. Cast iron offers lower cost and higher strength, while stainless steel offers better corrosion resistance.

[0051] The manhole cover 5 is provided with a number of openings 51. The shape, size, and number of these openings 51 can be designed according to actual needs. The shapes of the openings 51 may be circular, square, or rectangular, and openings 51 of different shapes are suitable for different scenarios and functional requirements. The size of the openings 51 requires comprehensive consideration of multiple factors, including ensuring sufficient water or gas flow to meet requirements such as sewage sampling or well ventilation, while also preventing oversized debris from entering the well, causing pipe blockage or affecting the normal operation of the equipment in the well. The number of openings 51 is determined based on the size of the manhole cover 5 and the actual required water or gas flow.

[0052] Combine Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, the sampling room 7 is a square structure, and a sliding door 9 is provided on one side of the sampling room 7 .

[0053] Specifically, the sampling room 7 is a square structure. This square design is relatively regular, which is convenient for reasonable layout within a limited space, can fully utilize the space to place the equipment and instruments required for sampling, and also facilitates the staff to operate and move around in the sampling room 7.

[0054] Sampling rooms 7 are typically constructed from a variety of materials, including color-coated steel plates, aluminum alloy frames with glass, or sandwich panels. Color-coated steel plates offer advantages such as light weight, high strength, and easy installation, while also providing some insulation and moisture resistance. Aluminum alloy frames are sturdy and durable, and glass increases daylighting, while sandwich panels offer excellent thermal insulation. They are typically constructed using modular assembly, allowing for quick setup and disassembly, allowing for flexible deployment in different locations based on specific needs.

[0055] A sliding door 9 is located on one side of the sampling room 7. This door 9 consists of a door frame and a door leaf. The door frame is typically made of a material that matches the main structure of the sampling room 7, such as aluminum alloy or steel, and serves to secure and support the door leaf. The door leaf can be made of glass to facilitate observation of external conditions, or other materials with sufficient strength and sealing properties, such as sandwich panels.

[0056] The above embodiments merely represent one or several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A sampling device for use in front of a coarse screen in a sewage treatment plant, comprising a water pump (1) installed on the ground next to a sewage wellhead, wherein the water pumping end of the water pump (1) is connected to a water inlet pipe (2), and the water outlet end of the water pump (1) is connected to a water outlet pipe (3), characterized in that: The outlet of the outlet pipe (3) is arranged above the manhole cover (5), and a U-shaped filter (4) is arranged on the water inlet pipe (2). The rear of the U-shaped filter (4) is connected to a water intake pipe (6) extending into the sewage well to take water. The U-shaped filter (4) also includes a sampling room (7) arranged on one side of the water pump (1), and a water sampler (8) is placed inside the sampling room (7). A three-way pipe (41) is arranged in the middle of the U-shaped bottom of the U-shaped filter (4), and both ends of the three-way pipe (41) are connected to the water inlet pipe, and the other end of the three-way pipe (41) is connected to a cleaning pipe (42).

2. A sampling device for use in front of a coarse screen in a sewage treatment plant according to claim 1, characterized in that: The water intake pipeline (6) is composed of at least two water intake pipes (61) spliced ​​together, and each of the two adjacent water intake pipes (61) is connected to a connecting pipe (62).

3. The sampling device for use in front of a coarse screen in a sewage treatment plant according to claim 2, characterized in that: The connecting tube (62) comprises a tube body (621), with an upper connecting tube (622) and a lower connecting tube (623) connected to both ends of the tube body (621), and inner walls of the outer ends of the upper connecting tube (622) and the lower connecting tube (623) are both provided with internal threads (624).

4. The sampling device for use in front of a coarse screen in a sewage treatment plant according to claim 3, characterized in that: A hexagonal tightening section (625) is provided in the middle of the tube body (621).

5. A sampling device for use in front of a coarse screen in a sewage treatment plant according to claim 2 or 4, characterized in that: External threads (611) are provided at both ends of the water intake pipe (61), and the water intake pipe (61) and the connecting pipe (62) are fixedly connected via threads.

6. The sampling device for use in front of a coarse screen in a sewage treatment plant according to claim 5, characterized in that: The manhole cover (5) is made of metal material and is provided with a plurality of openings (51).

7. The sampling device for use in front of a coarse screen in a sewage treatment plant according to claim 6, characterized in that: The sampling room (7) is a square structure, and a sliding door (9) is provided on one side of the sampling room (7).

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