A sewage sampling device for use in a sedimentation tank

Abstract

The utility model discloses a sewage sampling device for sedimentation tank, including fixed unit, telescopic unit and pneumatic unit, the fixed unit includes the fixed shell of vertical in the sedimentation tank, the surface of fixed shell is equipped with a plurality of outer sampling holes along its axial direction, telescopic unit is located in fixed shell, including bellows, the top end of bellows is fixedly connected with the top end of fixed shell, and its bottom is equipped with the rotating bottom plate, and the rotating bottom plate is sealedly connected with bellows, be equipped with the inner sampling hole on the rotating bottom plate, the outer ring of rotating bottom plate is close -fitted with the inner wall of fixed shell and moves in its inside, pneumatic unit includes the air pipe and piston, the air pipe is connected between the inside cavity of telescopic unit, and the piston is located in the air pipe and moves along its axial direction, realize using a set of device to the sewage of different depth in the sedimentation tank and do not need to move sampling device, and simple operation will not appear the situation that sampling depth is uncontrollable.

Description

Technical Field

[0001] The embodiments of this utility model belong to the field of wastewater sampling technology, and more specifically, relate to a wastewater sampling device for sedimentation tanks. Background Technology

[0002] In studying the wastewater treatment effect of microbial-aluminum salt composite flocculants, it is necessary to optimize the optimal ratio of microorganisms and aluminum salts in the composite flocculant through laboratory experiments, and calculate the increase in flocculation effect between the microbial-aluminum salt composite flocculant and traditional single aluminum salt flocculants. Then, repeated use tests and actual water sample application tests are conducted in the sedimentation tank of a wastewater treatment plant. During the testing process, wastewater samples need to be taken from the sedimentation tank for analysis. The typical sampling method involves lowering the sampling bottle deep into the sedimentation tank, filling it, and then lifting it to obtain the wastewater sample. However, this method often results in the sampling bottle being filled as soon as it enters the sedimentation tank, yielding only surface wastewater with more impurities that can interfere with the test results.

[0003] In existing technologies, stratified samplers are generally used. Their core structure is a cylindrical sampling container with automatically closing valves at both ends. When the sampler is submerged in water, the valves open, allowing water to flow into the container. Once the target depth is reached, the valves close by pulling a rope, enabling individual sampling at that depth. This stratified sampler can integrate multiple sampling chambers, allowing for the collection of samples from different depths in a single operation. However, in practice, this type of stratified sampler is difficult to operate, wastes a significant amount of time during sampling, and makes it difficult to determine the location for stratified sampling.

[0004] Therefore, there is a need for a wastewater sampling device for sedimentation tanks, which can sample wastewater at different depths in the sedimentation tank, and is simple to operate, easy to accurately control the sampling precision, and avoid inaccurate sampling results that may interfere with testing. Utility Model Content

[0005] To address the aforementioned deficiencies or improvement needs of existing technologies, this utility model provides a wastewater sampling device for sedimentation tanks. A fixed unit is placed in the wastewater within the sedimentation tank, with multiple external sampling holes corresponding to different sampling depths. A corrugated pipe extends and retracts to allow the rotating base plate to move, ensuring the cavity within the extension unit remains sealed. When sampling wastewater at a specific depth is required, the rotating base plate is moved so that its internal sampling hole aligns with the corresponding external sampling hole, thus connecting the cavity of the extension unit to the wastewater in the sedimentation tank. Then, a piston is moved to pump the wastewater into an extraction pipe, completing the sampling. This device allows for sampling wastewater at different depths in a sedimentation tank using a single unit without moving the sampling device, simplifying operation and eliminating uncontrollable sampling depth issues.

[0006] To achieve the above objectives, this utility model provides a wastewater sampling device for sedimentation tanks, including a fixing unit, a telescopic unit, and a pneumatic unit. The fixing unit includes a fixing shell vertically disposed in the sedimentation tank, and the surface of the fixing shell is provided with a plurality of external sampling holes along its axial direction; The telescopic unit is located in the fixed shell and includes a bellows. The top end of the bellows is fixedly connected to the top end of the fixed shell, and the bottom end of the bellows is provided with a rotating base plate. The rotating base plate is sealed to the bellows. The rotating base plate is provided with an inner sampling hole. The outer ring of the rotating base plate is in close contact with the inner wall of the fixed shell and moves inside it. The pneumatic unit includes an air extraction pipe and a piston. The air extraction pipe is connected to the internal cavity of the telescopic unit, and the piston is located inside the air extraction pipe and moves along its axial direction.

[0007] Furthermore, the fixing unit also includes a top cover disposed at the top of the fixing shell.

[0008] Furthermore, the telescopic unit also includes a fixed connecting pipe, which is located at the top end of the corrugated pipe and is used to fix the top end of the corrugated pipe to the top cover.

[0009] Furthermore, the bottom end of the corrugated pipe is provided with a movable connecting pipe, the bottom surface of which is provided with an annular groove, the cross-section of which is T-shaped, and the top end of the rotating base plate is provided with a rotating protrusion, the shape of which is the same as that of the annular groove, and which rotates in the annular groove.

[0010] Furthermore, an adjustment hole is provided at the center of the top of the top cover. Correspondingly, an adjustment rod is fixed at the center of the bottom plate of the rotating base plate. The top of the adjustment rod protrudes from the adjustment hole, and a scale line is engraved on the adjustment hole. The depth of the rotating base plate is determined by the scale line.

[0011] Furthermore, the side wall of the fixed connecting pipe is also provided with an air extraction hole, which penetrates the side wall of the fixed shell. The front end of the extraction pipe is provided with an opening that connects to the extraction port.

[0012] Furthermore, the piston is provided with a piston rod, which drives the piston to move. The bottom of the exhaust pipe is also provided with a sample outlet pipe that is connected to the internal cavity of the exhaust pipe.

[0013] Furthermore, the side wall of the fixed connecting pipe is provided with an air hole that penetrates the side wall of the fixed shell. A plug is also provided in the air hole, and the plug is connected to the air hole by a thread.

[0014] Furthermore, it also includes a locking unit, which is located at the top of the top cover and includes a fixed end cover, a clamping block, and a fastening rotating cylinder.

[0015] Furthermore, the fixed end cap is a cylindrical structure with threads on its surface, and its bottom end is fixed to the top cover, and the adjusting rod passes through the fixed end cap; The clamping block is a tubular structure with an outer diameter that gradually decreases from bottom to top, and it is divided into four equal parts. The bottom end of the fastening drum has an internal thread that connects to the fixed end cap, and the inner diameter of its top end gradually decreases from bottom to top.

[0016] In summary, compared with the prior art, the above-described technical solution conceived by this utility model can achieve the following beneficial effects: 1. This utility model discloses a wastewater sampling device. A fixed unit is placed in the wastewater within a sedimentation tank. Multiple external sampling holes on the fixed unit correspond to different sampling depths. A corrugated pipe extends and retracts to allow the rotating base plate to move, ensuring the cavity within the extension unit remains sealed. When sampling wastewater at a specific depth is required, the rotating base plate is moved so that its internal sampling hole aligns with the corresponding external sampling hole, thus connecting the cavity of the extension unit to the wastewater in the sedimentation tank. Then, a piston is moved to pump the wastewater into an extraction pipe, completing the sampling. This device allows for sampling wastewater at different depths in a sedimentation tank using a single unit without moving the sampling device. It is simple to operate and avoids uncontrollable sampling depth issues.

[0017] 2. In the wastewater sampling device of this utility model, when the rotating base plate moves up and down, it rotates until the outer sampling hole and the inner sampling hole are misaligned, to prevent wastewater of different depths from entering the corrugated pipe during the movement and interfering with the sampling results. When the rotating base plate reaches the sampling depth, it rotates again to align the outer sampling hole and the inner sampling hole, allowing wastewater of the corresponding depth to flow into the corrugated pipe.

[0018] 3. In the wastewater sampling device of this utility model, the operator adjusts the rotating base plate by adjusting the adjusting rod, so that it moves and rotates in the fixed shell. At the same time, the operator confirms the position and direction of the rotating base plate by the scale line, so as to achieve precise adjustment.

[0019] 4. In the wastewater sampling device of this utility model, after the rotating base plate moves to the position of the outer sampling hole and the inner sampling hole, the plug is removed. Under the action of water pressure, the wastewater enters the corrugated pipe and is level with the wastewater surface in the sedimentation tank. Then, the plug is used to seal the air hole, and then the pneumatic unit is used to extract the wastewater into the air extraction pipe.

[0020] 5. In the wastewater sampling device of this utility model, if the external sampling port is blocked by impurities in the wastewater after a long period of non-use, the air hole is sealed with a plug before the pneumatic unit pumps water. Then, the pneumatic unit is used to supply air into the corrugated pipe to flush the external sampling port and clean the impurities, so that the wastewater can smoothly enter the corrugated pipe.

[0021] 6. In the wastewater sampling device of this utility model, after the rotating base plate moves to the required sampling position, the rotating cylinder is tightened to move it axially. The internal squeezing clamping block compresses the rotating cylinder to clamp the adjusting rod, thereby fixing it. When the rotating base plate needs to be adjusted again, the adjusting rod can be moved by loosening the tightening cylinder. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the first position of the rotating base plate of a wastewater sampling device for a sedimentation tank according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the second position structure of the rotating base plate of a wastewater sampling device for a sedimentation tank according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the top structure of a fixed unit for a wastewater sampling device in a sedimentation tank, according to an embodiment of the present invention. Figure 4 This is a schematic diagram of the bottom structure of a telescopic unit for a wastewater sampling device in a sedimentation tank, according to an embodiment of the present invention. Figure 5 This is a schematic diagram of the pneumatic unit structure of a wastewater sampling device for a sedimentation tank according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the locking unit structure of a sewage sampling device for a sedimentation tank according to an embodiment of the present invention.

[0023] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1-fixed unit, 11-fixed shell, 12-top cover, 121-adjusting hole, 13-external sampling hole, 2-telescopic unit, 21-fixed connecting pipe, 211-air hole, 212-plug, 213-extraction hole, 22-bellows, 23-movable connecting pipe, 231-annular groove, 24-rotating base plate, 241-rotating protrusion, 242-internal sampling hole, 25-adjusting rod, 251-scale line, 3-locking unit, 31-fixed end cover, 32-clamping block, 33-fastening rotating cylinder, 4-pneumatic unit, 41-extraction pipe, 42-piston rod, 43-piston, 44-sample outlet pipe. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0025] like Figure 1-6As shown, this utility model embodiment provides a wastewater sampling device for a sedimentation tank, including a fixed unit 1, a telescopic unit 2 disposed in the fixed unit 1, and a pneumatic unit 4 disposed on the fixed unit 1. The fixed unit 1 includes a fixed shell 11 vertically disposed in the sedimentation tank, and the surface of the fixed shell 11 has multiple external sampling holes 13 along its axial direction. The telescopic unit 2 is disposed in the fixed shell 11 and includes a corrugated pipe 22. The top end of the corrugated pipe 22 is fixedly connected to the top end of the fixed shell 11, and its bottom end has a rotating base plate 24. The rotating base plate 24 is sealed to the corrugated pipe 22, and the rotating base plate 24 has an internal sampling hole 242. The outer ring of the rotating base plate 24 is in close contact with the inner wall of the fixed shell 11 and moves within it. The pneumatic unit 4 includes an air extraction pipe 41 and a piston 43. The air extraction pipe 41 is connected to the internal cavity of the telescopic unit 2, and the piston 43 is disposed within the air extraction pipe 41 and moves along its axial direction. The fixed unit 1 is placed in the sewage in the sedimentation tank. Multiple external sampling holes 13 on it correspond to different sampling depths. The corrugated pipe 22 expands and contracts to allow the rotating base plate 24 to move, keeping the cavity in the expansion unit 2 sealed. When sampling sewage at a certain depth is required, the rotating base plate 24 is moved so that its internal sampling hole 242 aligns with the corresponding external sampling hole 13, thus connecting the cavity in the expansion unit 2 with the sewage in the sedimentation tank. Then, the piston 43 is moved to pump the sewage into the extraction pipe 41, completing the sewage sampling. This device allows for sampling sewage at different depths in the sedimentation tank using a single device without moving the sampling apparatus. It is simple to operate and avoids uncontrollable sampling depth issues.

[0026] The fixing unit 1 also includes a top cover 12 located at the top of the fixing shell 11, which provides sealing and support for the top of the fixing shell 11.

[0027] The telescopic unit 2 also includes a fixed connecting pipe 21, which is located at the top end of the corrugated pipe 22 and fixes the top end of the corrugated pipe 22 to the top cover 12. The bottom end of the corrugated pipe 22 is also provided with a movable connecting pipe 23, the bottom surface of which has an annular groove 231 with a T-shaped cross-section. The top end of the rotating base plate 24 has a rotating protrusion 241, the shape of which is the same as the annular groove 231, and it rotates within the annular groove 231.

[0028] Understandably, when the rotating base plate 24 moves up and down, it rotates until the outer sampling hole 13 and the inner sampling hole 242 are misaligned to prevent sewage of different depths from entering the corrugated pipe 22 during the movement, thus avoiding interference with the sampling results. When the rotating base plate 24 reaches the sampling depth, it rotates again to align the outer sampling hole 13 and the inner sampling hole 242, allowing sewage of the corresponding depth to flow into the corrugated pipe 22.

[0029] As a further preferred embodiment, the top cover 12 is provided with an adjustment hole 121 at the center of its top end. Correspondingly, the center of the base plate of the rotating base plate 24 is also fixed with an adjustment rod 25. The top end of the adjustment rod 25 passes through the adjustment hole 121, and the adjustment hole 121 is engraved with a scale line 251. The depth of the rotating base plate 24 is determined by the scale line 251.

[0030] Understandably, the operator adjusts the rotating base plate 24 using the adjusting rod 25, allowing it to move and rotate within the fixed housing 11. At the same time, the operator confirms the position and direction of the rotating base plate 24 using the scale line 251, thus achieving precise adjustment.

[0031] The fixed connecting pipe 21 is also provided with an air extraction hole 213 on its side wall, which penetrates the side wall of the fixed shell 11. Correspondingly, the front end of the air extraction pipe 41 is provided with an opening that connects to the air extraction hole 213. The piston 43 is provided with a piston rod 42, which drives the piston 43 to move, so as to draw sewage from the corrugated pipe 22 into the air extraction pipe 41. The rear end of the air extraction pipe 41 is also provided with a sampling pipe 44, which is connected to the internal cavity of the air extraction pipe 41. After the piston 43 moves to the rear end of the air extraction pipe 41, the sewage in the air extraction pipe 41 flows into the sampling pipe 44 by gravity. The operator only needs to collect the sewage at the outlet of the sampling pipe 44 to complete the sampling.

[0032] As a further preferred embodiment, the side wall of the fixed connecting pipe 21 is also provided with an air hole 211, which penetrates the side wall of the fixed shell 11. The air hole 211 is also provided with a plug 212, and the plug 212 is connected to the air hole 211 by a thread.

[0033] Understandably, when the rotating base plate 24 moves to the position of the outer sampling hole 13 and the inner sampling hole 242, the plug 212 is removed. Under the action of water pressure, the sewage enters the corrugated pipe 22 and is level with the sewage water surface in the sedimentation tank. Then, the plug 212 is used to seal the air hole 211, and the pneumatic unit 4 is used to extract the sewage into the air extraction pipe 41.

[0034] Understandably, if the external sampling port 13 is blocked by impurities in the sewage due to long-term non-use, the air hole 211 is sealed with the plug 212 before the pneumatic unit 4 pumps water. Then, the pneumatic unit 4 supplies air to the bellows 22 to flush the external sampling port 13, clean the impurities, and allow the sewage to enter the bellows 22 smoothly.

[0035] In a preferred embodiment, to ensure that the rotating base plate 24 remains in its position after being adjusted to the sampling position, a locking unit 3 is further provided in this embodiment. The locking unit 3 is located at the top of the top cover 12 and includes a fixed end cover 31, a clamping block 32, and a fastening rotating cylinder 33. The fixed end cover 31 is a cylindrical structure with threads on its surface, and its bottom end is fixed to the top cover 12. The adjusting rod 25 passes through the fixed end cover 31. The clamping block 32 is a tubular structure with an outer diameter that gradually decreases from bottom to top and is divided into four equal parts. The bottom end of the fastening rotating cylinder 33 has internal threads and is connected to the fixed end cover 31. The inner diameter of its top end gradually decreases from bottom to top.

[0036] Understandably, when the rotating base plate 24 is moved to the desired sampling position, the rotating cylinder 33 is tightened to move it axially. The clamping block 32 inside the cylinder is squeezed to shrink it, clamping the adjusting rod 25 to fix it. When the rotating base plate 24 needs to be adjusted again, the adjusting rod 25 can be moved by loosening the rotating cylinder 33.

[0037] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wastewater sampling device for use in a sedimentation tank, characterized in that, It includes a fixed unit (1), a telescopic unit (2), and a pneumatic unit (4); The fixing unit (1) includes a fixing shell (11) vertically disposed in the sedimentation tank, and the surface of the fixing shell (11) is provided with a plurality of external sampling holes (13) along its axial direction. The telescopic unit (2) is located in the fixed shell (11) and includes a bellows (22). The top end of the bellows (22) is fixedly connected to the top end of the fixed shell (11), and the bottom end is provided with a rotating base plate (24). The rotating base plate (24) is sealed to the bellows (22). The rotating base plate (24) is provided with an inner sampling hole (242). The outer ring of the rotating base plate (24) is in close contact with the inner wall of the fixed shell (11) and moves inside it. The pneumatic unit (4) includes an air extraction pipe (41) and a piston (43). The air extraction pipe (41) is connected to the internal cavity of the telescopic unit (2). The piston (43) is located inside the air extraction pipe (41) and moves along its axial direction.

2. The wastewater sampling device for a sedimentation tank according to claim 1, characterized in that, The fixing unit (1) also includes a top cover (12) located at the top of the fixing shell (11).

3. A wastewater sampling device for a sedimentation tank according to claim 2, characterized in that, The telescopic unit (2) also includes a fixed connecting pipe (21), which is located at the top of the corrugated pipe (22) and fixes the top of the corrugated pipe (22) to the top cover (12) through the fixed connecting pipe (21).

4. A wastewater sampling device for a sedimentation tank according to claim 3, characterized in that, The bottom end of the corrugated pipe (22) is also provided with a movable connecting pipe (23). The bottom surface of the movable connecting pipe (23) is provided with an annular groove (231). The cross-section of the annular groove (231) is T-shaped. The top end of the rotating base plate (24) is provided with a rotating protrusion (241). The shape of the rotating protrusion (241) is the same as that of the annular groove (231), and it rotates in the annular groove (231).

5. A wastewater sampling device for a sedimentation tank according to claim 4, characterized in that, An adjustment hole (121) is also provided at the center of the top of the top cover (12). Correspondingly, an adjustment rod (25) is fixed at the center of the bottom plate of the rotating base plate (24). The top of the adjustment rod (25) passes through the adjustment hole (121), and a scale line (251) is engraved on the adjustment hole (121). The depth of the rotating base plate (24) is determined by the scale line (251).

6. A wastewater sampling device for a sedimentation tank according to claim 5, characterized in that, The side wall of the fixed connecting pipe (21) is also provided with an air extraction hole (213), which penetrates the side wall of the fixed shell (11). The front end of the extraction pipe (41) is provided with an opening that connects to the extraction port (213).

7. A wastewater sampling device for a sedimentation tank according to claim 6, characterized in that, The piston (43) is provided with a piston rod (42), which drives the piston (43) to move. The bottom rear end of the extraction pipe (41) is also provided with a sample outlet pipe (44) which is connected to the internal cavity of the extraction pipe (41).

8. A wastewater sampling device for a sedimentation tank according to claim 7, characterized in that, The side wall of the fixed connecting pipe (21) is also provided with an air hole (211), which penetrates the side wall of the fixed shell (11). A plug (212) is also provided in the air hole (211), and the plug (212) is connected to the air hole (211) by a thread.

9. A wastewater sampling device for a sedimentation tank according to claim 8, characterized in that, It also includes a locking unit (3), which is located at the top of the top cover (12) and includes a fixed end cover (31), a clamping block (32) and a fastening rotating cylinder (33).

10. A wastewater sampling device for a sedimentation tank according to claim 9, characterized in that, The fixed end cap (31) is a cylindrical structure with threads on its surface. Its bottom end is fixed to the top cap (12), and the adjusting rod (25) passes through the fixed end cap (31). The clamping block (32) is a tubular structure whose outer diameter gradually decreases from bottom to top, and it is divided into four equal parts; The bottom end of the fastening drum (33) is provided with an internal thread, which is connected to the fixed end cap (31), and the inner diameter of its top end gradually decreases from bottom to top.

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