A telescopic wastewater sampling device

Abstract

The utility model discloses a telescopic wastewater sampling tool relates to wastewater sampling technical field, including sampling pipe and sampling assembly, the surface of sampling pipe is opened with sampling hole, and the middle part of sampling pipe is provided with the partition frame, and the sampling assembly for telescopic sampling is set up in the outside of sampling pipe, and sampling assembly includes telescopic cover, compression ring, waterproof sheet, waterproof electric push rod no. The inside of one end of telescopic cover is installed with compression ring. The telescopic wastewater sampling tool, telescopic cover is telescopic under the telescopic action of waterproof electric push rod no. 1 and telescopic in the outside of sampling pipe, make sampling hole expose can to wastewater sampling, simultaneously, connecting rod moves along with telescopic cover, and cooperate auxiliary board plays the role of wastewater auxiliary extraction in sampling pipe, improves sampling efficiency, and compression ring plays the role of plugging protection to sampling hole in the sampling pipe and does not reach sampling position, avoids the impurity on the surface of wastewater and enters sampling pipe and influences sampling sample.

Description

Technical Field

[0001] This invention relates to the field of wastewater sampling technology, specifically a telescopic wastewater sampling device. Background Technology

[0002] The wastewater sampler uses a highly reliable peristaltic pump and a hybrid stepper motor drive to meet water quality sampling requirements under various environmental conditions. It is suitable for environmental monitoring stations at all levels, wastewater treatment plants, water conservancy, water affairs and research institutes to collect water samples from industrial wastewater discharge outlets, rivers, lakes and seas.

[0003] Currently, wastewater samplers are typically used by simply dropping them into the wastewater, allowing the wastewater to flow into the sampler. During the sampling process, the sampler is affected by impurities on the surface and at the bottom of the wastewater. The fixed structure of the wastewater sampler makes it inconvenient to use a telescopic method to extract wastewater and avoid impurities on the surface and at the bottom, resulting in unqualified wastewater samples that affect subsequent testing.

[0004] Therefore, in view of this, we studied and improved the existing structure and its shortcomings, and proposed a telescopic wastewater sampling device. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a telescopic wastewater sampling device, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a telescopic wastewater sampling device, comprising a sampling tube and a sampling assembly, wherein the sampling tube has a sampling hole on its surface and a separator is provided in the middle of the sampling tube, the sampling assembly for telescopic sampling is provided outside the sampling tube, and the sampling assembly includes a telescopic sleeve, a compaction ring, a waterproof sheet, a waterproof electric push rod, a connecting rod and an auxiliary plate, a compaction ring is installed on the inner side of one end of the telescopic sleeve, and a waterproof sheet is installed on the inner side of the other end of the telescopic sleeve, a waterproof electric push rod is provided on the side of the waterproof sheet, a connecting rod is installed laterally in the middle of the telescopic sleeve, and an auxiliary plate is installed at the end of the connecting rod;

[0007] The telescopic sleeve slides and extends outside the sampling tube under the telescopic action of the waterproof electric push rod, exposing the sampling hole. The compaction ring seals and protects the sampling hole before the sampling tube reaches the sampling position, preventing impurities on the wastewater surface from entering the sampling tube and affecting the sample. At the same time, the compaction ring seals and waterproofs one side of the telescopic sleeve as it extends and retracts. The waterproof sheet unfolds as the telescopic sleeve moves, waterproofing the other side of the telescopic sleeve and preventing wastewater from being trapped inside the telescopic sleeve and the sampling tube. The connecting rod moves with the telescopic sleeve and, together with the auxiliary plate, assists in the extraction of wastewater from the sampling tube. The sampling tube and the telescopic sleeve are connected by a sleeve, and the telescopic sleeve and the compaction ring fit tightly together.

[0008] Furthermore, two sampling tubes are stacked about the vertical central axis of the separator, and the number of sampling components is the same as the number of sampling tubes. The sampling tubes and the telescopic sleeve are connected by a sleeve, and the telescopic sleeve and the compression ring are tightly fitted.

[0009] Furthermore, the telescopic sleeve has a cleaning hole on its side, and a cleaning assembly for assisting in cleaning the inner wall of the sampling tube is provided inside the cleaning hole. The cleaning assembly includes a sealing block one, a cleaning rod, a sealing block two, and a cleaning plate. The cleaning rod is horizontally installed inside the sealing block one, the end of the cleaning rod is connected to the sealing block two, and the cleaning plate is installed on the side of the sealing block two.

[0010] Furthermore, the outer diameter of the first sealing block matches the inner diameter of the cleaning hole, and the first sealing block and the second sealing block are distributed in parallel. The first sealing block and the cleaning rod are arranged symmetrically about the horizontal central axis of the cleaning plate in two sets.

[0011] Furthermore, a filter assembly for preventing clogging is provided on the outside of the sampling hole, and the filter assembly includes a filter screen and an elastic ring, with the elastic ring installed in the middle of the filter screen.

[0012] Furthermore, an installation ring is installed at the upper end of the partition frame, and an adjustment component for adjusting the height of the device in wastewater is provided inside the installation ring. The adjustment component includes a counterweight tube, a sliding ring, a liquid inlet, and a liquid infusion tube. Sliding rings are fitted on the outside of both sides of the counterweight tube, and liquid inlets are provided at both ends of the counterweight tube. Liquid inlets are installed on the external threads of the liquid inlets.

[0013] Furthermore, a partition plate is installed inside the partition frame, and waterproof electric push rods are installed on both sides of the partition plate. A sealing block is installed at the output end of the electric push rod, and a rubber sheet is installed on the outside of the sealing block.

[0014] Furthermore, the electric push rod and the sealing block are arranged symmetrically about the vertical central axis of the partition plate in two sets, and the sealing block and the rubber sheet are tightly fitted together.

[0015] Furthermore, the surface of the mounting ring is provided with a limiting component for limiting the installation of the counterweight tube, and two sets of the limiting component are provided.

[0016] Furthermore, the limiting component includes a mounting hole, a threaded rod, an extrusion block, and a rotating plate, and the threaded rod is installed in the internal thread of the mounting hole. The extrusion block is installed at one end of the threaded rod, and the rotating plate is installed at the other end of the threaded rod.

[0017] This invention provides a telescopic wastewater sampling device, which has the following advantages:

[0018] 1. This telescopic wastewater sampling device features a telescopic sleeve that slides and extends outside the sampling tube under the telescopic action of a waterproof electric push rod. This exposes the sampling hole for wastewater sampling. Simultaneously, the connecting rod moves with the telescopic sleeve, working in conjunction with an auxiliary plate to assist in wastewater extraction within the sampling tube, thus improving sampling efficiency. The compaction ring seals and protects the sampling hole before the sampling tube reaches the sampling position, preventing impurities from the wastewater surface from entering the sampling tube and affecting the sample. The compaction ring also provides a waterproof seal on one side of the telescopic sleeve during its extension and retraction. A waterproof sheet unfolds as the telescopic sleeve extends to the side, waterproofing the other side of the sleeve and preventing wastewater from being trapped inside the telescopic sleeve and sampling tube. This also increases the service life of the waterproof electric push rod.

[0019] 2. This telescopic wastewater sampling device features a cleaning hole for installing and operating the cleaning components, as well as for discharging wastewater after cleaning. Sealing block one seals the cleaning hole when not in use, and sealing block two similarly seals the hole at the end of the sampling tube. The cleaning rod controls the movement of the cleaning plate; when the cleaning plate moves laterally, it scrapes and cleans the inner wall of the sampling tube, preventing wastewater residue from affecting subsequent sampling operations and allowing the device to be reused. The filter screen outside the sampling hole filters impurities, preventing blockage during sampling. The elastic ring causes the filter screen to spring open after the compression ring is removed, forming a triangular-shaped filter screen, preventing impurities from accumulating on the outside and causing blockage. The separator and the inside of the sampling tube are not connected; the separator plate separates the hollow separator. The waterproof electric push rod two moves the sealing block, which seals the sampling hole after sampling to prevent wastewater loss. The rubber sheet enhances the sealing performance.

[0020] 3. This telescopic wastewater sampling device features an installation ring for the horizontal insertion of a counterweight tube, allowing the counterweight tube to be installed at the top of the sampling tube and adjusting its overall weight. The hollow counterweight tube has an internal water volume that is adjusted via an infusion tubing. This adjustment of water volume allows for better descent into the wastewater to the desired height for sampling in the middle of the wastewater. A sliding ring and a telescopic sleeve are fixedly connected. When the telescopic sleeve moves, the sliding ring slides outside the counterweight tube, not affecting the telescopic sleeve's extension and retraction, while also providing auxiliary limiting on both sides of the counterweight tube. A mounting hole and a threaded rod are threaded together. The threaded rod rotates within the mounting hole to adjust the position of the squeezing block, which squeezes and limits the counterweight tube at its center. The device is easy to operate and disassemble, and a rotating plate facilitates manual control of the threaded rod's rotation. Attached Figure Description

[0021] Figure 1This is a schematic diagram of the overall structure of a telescopic wastewater sampling device according to the present invention;

[0022] Figure 2 This is a schematic diagram of the cleaning component structure of a telescopic wastewater sampling device according to the present invention;

[0023] Figure 3 This is a three-dimensional structural diagram of the filter component of a telescopic wastewater sampling device according to the present invention;

[0024] Figure 4 This is a schematic diagram of the internal structure of the partition frame of a telescopic wastewater sampling device according to the present invention;

[0025] Figure 5 This is a three-dimensional structural diagram of the sealing block of a telescopic wastewater sampling device according to the present invention;

[0026] Figure 6 This is a three-dimensional structural diagram of the limiting component of a telescopic wastewater sampling device according to the present invention.

[0027] In the diagram: 1. Sampling tube; 2. Sampling hole; 3. Separator; 4. Sampling assembly; 401. Telescopic sleeve; 402. Compactor ring; 403. Waterproof sheet; 404. Waterproof electric push rod one; 405. Connecting rod; 406. Auxiliary plate; 5. Cleaning hole; 6. Cleaning assembly; 601. Sealing block one; 602. Cleaning rod; 603. Sealing block two; 604. Cleaning plate; 7. Filter assembly; 701. Filter screen; 702. Elastic ring; 8. Mounting ring; 9. Adjustment assembly; 901. Counterweight tube; 902. Sliding ring; 903. Liquid replenishment port; 904. Infusion tubing; 10. Separator plate; 11. Waterproof electric push rod two; 12. Sealing block; 13. Rubber sheet; 14. Limiting assembly; 1401. Mounting hole; 1402. Threaded rod; 1403. Squeezing block; 1404. Rotating plate. Detailed Implementation

[0028] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0029] like Figure 1 and Figure 3As shown, the present invention provides a technical solution: a telescopic wastewater sampling device, including a sampling tube 1 and a sampling component 4. The sampling tube 1 has a sampling hole 2 on its surface, and a separator 3 is provided in the middle of the sampling tube 1. The separator 3 and the sampling tube 1 are not connected internally. The sampling component 4 for telescopic sampling is located outside the sampling tube 1, and the sampling component 4 includes a telescopic sleeve 401, a compaction ring 402, a waterproof sheet 403, a waterproof electric push rod 404, a connecting rod 405, and an auxiliary plate 406. A compaction ring 402 is installed on the inner side of one end of the telescopic sleeve 401. Under the telescopic action of the waterproof electric push rod 404, the telescopic sleeve 401 slides and extends outside the sampling tube 1, exposing the sampling hole 2 for wastewater sampling, while the other end of the telescopic sleeve 401... A waterproof sheet 403 is installed on the inner side of the tube. A compression ring 402 seals the sampling hole 2 before the sampling tube 1 reaches the sampling position, preventing impurities from the wastewater surface from entering the sampling tube 1 and affecting the sample. Simultaneously, the compression ring 402 provides a waterproof seal on one side when the telescopic sleeve 401 extends or retracts. A waterproof electric push rod 404 is installed on the side of the waterproof sheet 403. The waterproof sheet 403 unfolds as the telescopic sleeve 401 extends and retracts, providing waterproofing to the other side of the telescopic sleeve 401, preventing wastewater from being trapped inside the telescopic sleeve 401 and the sampling tube 1, and increasing the service life of the waterproof electric push rod 404. A connecting rod 405 is horizontally installed in the middle of the telescopic sleeve 401. The connecting rod 405 moves with the telescopic sleeve 401, cooperating with auxiliary... Plate 406 assists in wastewater extraction in sampling tube 1, improving sampling efficiency. An auxiliary plate 406 is installed at the end of connecting rod 405. Two sampling tubes 1 are stacked about the vertical central axis of separator 3. The number of sampling components 4 matches the number of sampling tubes 1. Sampling tubes 1 and telescopic sleeve 401 are connected by a sleeve, and telescopic sleeve 401 and compression ring 402 fit tightly together. A cleaning hole 5 is provided on the side of telescopic sleeve 401 for the installation and operation of cleaning component 6, as well as for the discharge of wastewater after cleaning. A filter component 7 for anti-clogging is installed outside sampling hole 2. The filter component 7 includes a filter screen 701 and an elastic ring 702. The elastic ring 702 is installed in the middle of filter screen 701. The filter screen 701... The external aperture 2 serves to filter impurities, preventing them from clogging the sampling aperture 2 during sampling. The elastic ring 702 causes the filter screen 701 to spring open due to its own elasticity after the compression ring 402 is removed, forming a triangular-shaped filter screen 701 on its sides. This prevents impurities from accumulating on the outside of the filter screen 701 and causing blockage. An installation ring 8 is installed at the upper end of the separator 3. The installation ring 8 is used for the horizontal insertion of the counterweight tube 901, allowing the counterweight tube 901 to be installed at the top of the sampling tube 1, thus adjusting the overall weight of the sampling tube 1. The installation ring 8 also contains an adjustment component 9 for adjusting the height of the device in wastewater. The adjustment component 9 includes the counterweight tube 901, a sliding ring 902, a replenishment port 903, and an infusion tubing 904.Furthermore, sliding rings 902 are fitted on both sides of the counterweight tube 901. The sliding rings 902 are fixedly connected to the telescopic sleeve 401. When the telescopic sleeve 401 moves, the sliding rings 902 slide outside the counterweight tube 901, not affecting the extension and retraction of the telescopic sleeve 401, while also providing auxiliary limiting for both sides of the counterweight tube 901. Both ends of the counterweight tube 901 are equipped with liquid inlets 903, and infusion tubing 904 is installed on the external threads of the liquid inlets 903. The internal water volume of the hollow counterweight tube 901 is adjusted via the infusion tubing 904. Adjusting the water volume allows for adjustment of the overall weight of the device, enabling it to sink to the required height in the wastewater for sampling in the middle of the wastewater.

[0030] like Figure 2 As shown, the cleaning hole 5 is equipped with a cleaning assembly 6 for assisting in cleaning the inner wall of the sampling tube 1. The cleaning assembly 6 includes a first sealing block 601, a cleaning rod 602, a second sealing block 603, and a cleaning plate 604. The cleaning rod 602 is horizontally installed inside the first sealing block 601. The first sealing block 601 seals the cleaning hole 5 when it is not in use. The cleaning rod 602 is used for movement control of the cleaning plate 604. The end of the cleaning rod 602 is connected to the second sealing block 603, which also controls the movement of the sampling tube 1. The hole at the end of sample tube 1 serves as a seal, and a cleaning plate 604 is installed on the side of the sealing block 2 603. When the cleaning plate 604 moves laterally, it scrapes and cleans the inner wall of the sampling tube 1, preventing residual wastewater from affecting the next sampling operation and allowing the instrument to be reused. The outer diameter of the sealing block 1 601 matches the inner diameter of the cleaning hole 5, and the sealing block 1 601 and the sealing block 2 603 are distributed in parallel. There are two sets of sealing blocks 1 601 and cleaning rod 602 symmetrically arranged about the horizontal central axis of the cleaning plate 604.

[0031] like Figures 4-5 As shown, a partition plate 10 is installed inside the partition frame 3. The partition plate 10 serves to separate the hollow partition frame 3. Waterproof electric push rods 11 are installed on both sides of the partition plate 10. The waterproof electric push rods 11 push the sealing block 12. The sealing block 12 is installed at the output end of the waterproof electric push rods 11. The sealing block 12 seals the sampling hole 2 after the sampling tube 1 finishes sampling to prevent the loss of sample wastewater. A rubber sheet 13 is installed on the outside of the sealing block 12. Two sets of waterproof electric push rods 11 and sealing blocks 12 are symmetrically arranged about the vertical central axis of the partition plate 10. The sealing block 12 and the rubber sheet 13 are tightly fitted together, and the rubber sheet 13 increases the sealing performance.

[0032] like Figure 6As shown, the surface of the mounting ring 8 is provided with a limiting component 14 for limiting the installation of the counterweight tube 901. The limiting component 14 is provided in two sets. The limiting component 14 includes a mounting hole 1401, a threaded rod 1402, a pressing block 1403, and a rotating plate 1404. The mounting hole 1401 and the threaded rod 1402 are threadedly connected. The threaded rod 1402 is installed in the internal thread of the mounting hole 1401. The threaded rod 1402 rotates in the mounting hole 1401 to adjust the position of the pressing block 1403. The pressing block 1403 is installed at one end of the threaded rod 1402. The pressing block 1403 plays a role in pressing and limiting the counterweight tube 901 at the middle of the surface. The operation is simple and easy to disassemble. The rotating plate 1404 is installed at the other end of the threaded rod 1402. The rotating plate 1404 is convenient for personnel to hold and control the rotation of the threaded rod 1402.

[0033] In summary, as Figures 1-6 As shown, in use, the telescopic wastewater sampling device involves passing the counterweight tube 901 laterally through the sliding ring 902 and the mounting ring 8, so that the middle of the counterweight tube 901 is located in the mounting ring 8. Then, the infusion tube 904 is threaded onto the infusion ports 903 on both sides. The rotating plate 1404 is held and rotated, which drives the threaded rod 1402 to rotate in the mounting hole 1401 to adjust the position of the squeezing block 1403 relative to the surface of the counterweight tube 901. This allows the squeezing block 1403 to squeeze and limit the counterweight tube 901 at the middle of its surface, preventing it from falling off and facilitating subsequent disassembly.

[0034] Next, the sampling tube 1 is placed in the wastewater to be sampled. The position of the sampling tube 1 and its rise after sampling are controlled by the infusion tube 904. Liquid is delivered to the hollow counterweight tube 901 through the inside of the infusion tube 904, which increases the overall weight of the counterweight tube 901. This makes it easier for the instrument to sink to the required height in the wastewater and to sample in the middle of the wastewater, thus improving the quality of the sample.

[0035] During sampling, the waterproof electric push rod 404 drives the telescopic sleeve 401 to slide and extend outward on the outside of the sampling tube 1, causing the compaction ring 402 to move away from the sampling hole 2 as the telescopic sleeve 401 moves, allowing wastewater to enter the interior of the sampling tube 1 through the sampling hole 2. At the same time as the compaction ring 402 moves away, the elastic ring 702 causes the filter screen 701 to spring open and form a triangular shape on the sides after the compaction ring 402 is pulled away. At this time, the filter screen 701 plays the role of filtering impurities outside the sampling hole 2, preventing impurities from clogging the sampling hole 2 during sampling. At the same time, the connecting rod 405 moves with the telescopic sleeve 401, and together with the auxiliary plate 406, plays the role of assisting in the extraction of wastewater in the sampling tube 1, improving the sampling efficiency. When the telescopic sleeve 401 moves, the sliding ring 902 slides outside the counterweight tube 901, which does not affect the extension and retraction of the telescopic sleeve 401, and also plays the role of auxiliary limiting on both sides of the counterweight tube 901.

[0036] Before sampling, the compaction ring 402 seals and protects the sampling hole 2 before the sampling tube 1 reaches the sampling position, preventing impurities on the wastewater surface from entering the sampling tube 1 and affecting the sample. At the same time, the compaction ring 402 seals and waterproofs one side of the telescopic sleeve 401 when it extends and retracts. The waterproof sheet 403 unfolds as the telescopic sleeve 401 extends and retracts to the side, waterproofing the other side of the telescopic sleeve 401, preventing wastewater from being trapped in the telescopic sleeve 401 and the inner side of the sampling tube 1, and increasing the service life of the waterproof electric push rod 404.

[0037] Two sets of sampling tubes 1 can sample wastewater at two different locations in the wastewater. After sampling, the extension and retraction of the waterproof electric push rod 11 is controlled to push the sealing block 12, so that the sealing block 12 moves to the sampling hole 2 and seals the sampling hole 2 to prevent the loss of sample wastewater. At this time, the sampling tube 1 can be taken out of the wastewater through the infusion tube 904.

[0038] After the wastewater is poured out of the sampling tube 1, the cleaning plate 604 can be moved laterally inside the sampling tube 1 by controlling the cleaning rod 602 to scrape and clean the inner wall of the sampling tube 1, so as to avoid the wastewater residue affecting the next sampling operation and make the instrument reusable. When the cleaning rod 602 moves, the sealing block 601 does not block the cleaning hole 5, which facilitates the discharge of cleaning water.

[0039] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A retractable wastewater sampling device comprising a sampling tube (1) and a sampling assembly (4), characterized in that: The sampling pipe (1) is provided with a sampling hole (2) on the surface, and the middle part of the sampling pipe (1) is provided with a partition frame (3), the sampling assembly (4) for telescopic sampling is arranged outside the sampling pipe (1), and the sampling assembly (4) comprises a telescopic sleeve (401), a compression ring (402), a waterproof sheet (403), a waterproof electric push rod (404), a connecting rod (405) and an auxiliary plate (406), the inner side of one end of the telescopic sleeve (401) is provided with the compression ring (402), and the inner side of the other end of the telescopic sleeve (401) is provided with the waterproof sheet (403), the side of the waterproof sheet (403) is provided with the waterproof electric push rod (404), the middle part of the telescopic sleeve (401) is transversely provided with the connecting rod (405), and the end of the connecting rod (405) is provided with the auxiliary plate (406). Wherein, the telescopic sleeve (401) slides in and out of the sampling pipe (1) under the telescopic action of the waterproof electric push rod (404), so that the sampling hole (2) is exposed, the compression ring (402) plays a role in plugging and protecting the sampling hole (2) when the sampling pipe (1) does not reach the sampling position, so as to avoid that the surface impurities of waste water enter the sampling pipe (1) and affect the sampling sample, at the same time, the compression ring (402) plays a role in sealing and waterproofing on one side of the telescopic sleeve (401) when the telescopic sleeve (401) is telescoped, the waterproof sheet (403) is unfolded with the telescopic movement of the telescopic sleeve (401) and plays a role in waterproofing on the other side of the telescopic sleeve (401), so as to avoid that the telescopic sleeve (401) and the inner side of the sampling pipe (1) carry waste water, the connecting rod (405) moves with the telescopic sleeve (401) and cooperates with the auxiliary plate (406) to play a role in auxiliary extraction of waste water in the sampling pipe (1), the sampling pipe (1) and the telescopic sleeve (401) are connected in a sleeved mode, and the telescopic sleeve (401) and the compression ring (402) are closely attached.

2. A retractable wastewater sampling device according to claim 1, wherein: The sampling pipe (1) is arranged in two about the vertical central axis of the partition frame (3), and the number of the sampling assembly (4) is consistent with the number of the sampling pipe (1), the sampling pipe (1) and the telescopic sleeve (401) are connected in a sleeved mode, and the telescopic sleeve (401) and the compression ring (402) are closely attached.

3. A retractable wastewater sampling device according to claim 1, wherein: The side of the telescopic sleeve (401) is provided with a cleaning hole (5), and the inside of the cleaning hole (5) is provided with a cleaning assembly (6) for assisting in cleaning the inner wall of the sampling pipe (1), the cleaning assembly (6) comprises a sealing block one (601), a cleaning rod (602), a sealing block two (603) and a cleaning plate (604), the inside of the sealing block one (601) is transversely provided with the cleaning rod (602), the end of the cleaning rod (602) is connected with the sealing block two (603), and the side of the sealing block two (603) is provided with the cleaning plate (604).

4. A retractable wastewater sampling device according to claim 3, wherein: The outer diameter of the sealing block one (601) is consistent with the inner diameter of the cleaning hole (5), and the sealing block one (601) and the sealing block two (603) are distributed in parallel, and the sealing block one (601) and the cleaning rod (602) are symmetrically provided with two groups about the horizontal central axis of the cleaning plate (604).

5. A retractable wastewater sampling device according to claim 1, wherein: The outer part of the sampling hole (2) is provided with a filter assembly (7) for preventing blockage, and the filter assembly (7) comprises a filter screen (701) and an elastic ring (702), and the middle part of the filter screen (701) is provided with the elastic ring (702).

6. A retracting wastewater sampling device according to claim 1, wherein: The upper end of the partition frame (3) is provided with a mounting ring (8), and the inner part of the mounting ring (8) is provided with an adjusting assembly (9) for adjusting the height of the device in wastewater, and the adjusting assembly (9) comprises a counterweight pipe (901), a sliding ring (902), a liquid supplementing port (903) and a liquid supplementing hanging pipe (904), and the outer part of both sides of the counterweight pipe (901) is sleeved with the sliding ring (902), both ends of the counterweight pipe (901) are provided with the liquid supplementing port (903), and the outer part of the liquid supplementing port (903) is screwed with the liquid supplementing hanging pipe (904).

7. A retractable wastewater sampling device according to claim 1, wherein: The inner part of the partition frame (3) is provided with a partition plate (10), and both sides of the partition plate (10) are provided with a waterproof electric push rod two (11), and the output end of the waterproof electric push rod two (11) is provided with a blocking block (12), and the outer part of the blocking block (12) is provided with a rubber sheet (13).

8. A retractable wastewater sampling implement according to claim 7, wherein: The waterproof electric push rod two (11) and the blocking block (12) are symmetrically provided with two groups about the vertical central axis of the partition plate (10), and the blocking block (12) and the rubber sheet (13) are closely attached.

9. A retractable wastewater sampling device according to claim 6, wherein: The surface of the mounting ring (8) is provided with a limiting assembly (14) for limiting the installation of the counterweight pipe (901), and the limiting assembly (14) is provided with two groups.

10. A retractable wastewater sampling implement according to claim 9, wherein: The limiting assembly (14) comprises a mounting hole (1401), a threaded rod (1402), an extrusion block (1403) and a rotating plate (1404), and the inner part of the mounting hole (1401) is screwed with the threaded rod (1402), one end of the threaded rod (1402) is provided with the extrusion block (1403), and the other end of the threaded rod (1402) is provided with the rotating plate (1404).

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