A sewage water quality detection sampling device

Abstract

The utility model provides a kind of sampling equipment for sewage water quality detection, it is related to sewage water quality detection sampling technical field.The utility model, including: support frame, the arc surface of support frame is provided with support plate;Drive mechanism, drive mechanism is arranged in the surface of one end of support plate;Sampling mechanism, sampling mechanism is arranged in the position of the lower surface of support plate corresponding drive mechanism;Filtering mechanism, filtering mechanism is arranged in the side surface of sampling mechanism;And drainage mechanism, drainage mechanism is arranged in the side wall surface of sampling mechanism;Among them, sampling mechanism includes sampling water cylinder and closure block, the upper end of sampling water cylinder is fixedly connected with the lower surface of support plate, three water storage inner cavities are evenly provided in the inner wall of sampling water cylinder, the inner wall of sampling water cylinder is uniformly fixedly connected with water inlet frame. Solve the problem that water quality detection sampling device samples, needs to sample lake water at a certain distance from shore, in turn causes the problem that it is inconvenient to control operation to water quality detection equipment.

Description

Technical Field

[0001] This application relates to the field of wastewater quality testing and sampling technology, and in particular to a wastewater quality testing sampling device. Background Technology

[0002] When lake water is polluted, it is necessary to test the lake water quality to determine the degree and cause of the pollution and then take corresponding improvement measures. Therefore, it is necessary to use appropriate wastewater quality testing sampling equipment. The polluted lake water is sampled into the device by using a sampling device, which is quite common in the process of wastewater quality testing.

[0003] Existing technologies, such as the utility model patent with publication number CN214472058U, disclose a novel sampling device for water quality testing. This patent includes a sampling cylinder with a collection mechanism installed inside. The collection mechanism includes a fixed cylinder, a partition, a collection chamber, a mounting groove, a telescopic spring, a sealing plate, an embedded groove, a movable spring, a guide block, an electric actuator, a rubber piston plate, and a through hole. The fixed cylinder is fixedly installed inside the sampling cylinder, and the partition is fixedly connected at equal intervals to the inner wall of the sampling cylinder. In this utility model, when the rubber piston plate moves upward, the bottom end of the guide block restricts the movement of the sealing plate, which, in conjunction with the telescopic spring, facilitates the movement of the sealing plate, thereby facilitating the entry of water into the collection chamber and completing the water sampling. The through hole facilitates the replacement of water inside the fixed cylinder and the movement of sealing plates at different heights driven by the rubber piston plate, thus facilitating the stratified sampling of water at different depths and enabling the simultaneous sampling of multiple layers of water quality.

[0004] During wastewater quality testing, it was found that when operating wastewater quality testing sampling equipment, it is necessary to sample the lake water at a certain distance from the shore. However, most water quality sampling equipment is single-sample, requiring multiple sampling operations, which makes it inconvenient to adjust and operate the water quality testing equipment. Utility Model Content

[0005] One of the technical problems this application aims to solve is that during the operation of wastewater quality testing and sampling equipment, it is necessary to sample lake water at a certain distance from the shore. However, most water quality sampling equipment is single-sample and requires multiple sampling operations, which makes it inconvenient to control the operation of the water quality testing equipment.

[0006] To address the aforementioned technical problems, this application provides a wastewater quality testing sampling device, comprising:

[0007] The support frame has a support plate on its arc surface;

[0008] A drive mechanism is mounted on one end surface of the support plate.

[0009] The sampling mechanism is located on the lower surface of the support plate at the position corresponding to the drive mechanism.

[0010] A filtering mechanism is disposed on one side surface of the sampling mechanism; and

[0011] A drainage mechanism is installed on the side wall surface of the sampling mechanism;

[0012] The sampling mechanism includes a sampling water cylinder and a closing block. The upper end of the sampling water cylinder is fixedly connected to the lower surface of the support plate. The inner wall of the sampling water cylinder has three water-storing cavities evenly distributed. Each inner wall of the sampling water cylinder is fixedly connected to a water inlet frame. The cross-section of the water inlet frame is concave, and the inner wall of the water inlet frame has a water inlet hole. The closing block is aligned with the position of the water inlet hole by means of a driving mechanism. The filtering mechanism includes a filter frame. The surface of the filter frame is engaged with the surface of the sampling water cylinder. Both ends of the filter frame are fixedly connected to mounting frames. A connecting plate is fixedly connected to the surface of the sampling water cylinder at the position corresponding to the mounting frame. A pressing shaft is threaded through the surface of the connecting plate. One end of the pressing shaft is fixedly connected to a mounting block. The surface of the mounting block is inserted into the inner wall of the mounting frame.

[0013] In some embodiments, the drive mechanism includes a connecting plate and a second rotating shaft. The bottom end of the connecting plate is fixedly connected to the surface of the support plate. A first rotating shaft is rotatably connected to the surface of the connecting plate. A rotating block is fixedly connected to the end of the first rotating shaft near the support frame. A first bevel tooth is fixedly connected to the end of the first rotating shaft away from the support frame. The second rotating shaft is rotatably connected to the support plate and the inner wall of the sampling water cylinder. A second bevel tooth is fixedly connected to the upper end of the second rotating shaft. The second bevel tooth meshes with the tooth surface of the first bevel tooth. An outer frame is fixedly connected to the upper surface of the support plate. The first bevel tooth and the second bevel tooth are located inside the outer frame.

[0014] In some embodiments, the sampling mechanism further includes a sealing ring, which is fixedly connected to the inner wall surface of the water inlet frame and corresponds to the position of the water inlet hole. The arc surface of the second rotating shaft is fixedly connected to the closing block, the surface of the closing block abuts against the surface of the sealing ring, the cross-section of the closing block is semi-circular, and the cross-sectional dimensions of the closing block are adapted to the cross-sectional dimensions of the water inlet frame.

[0015] In some embodiments, the filtering mechanism further includes a limiting rod, one end of which is fixedly connected to the surface of the mounting block, and the arc surface of the limiting rod slides through the surface of the connecting plate.

[0016] In some embodiments, the drainage mechanism includes a drain pipe, the arc surface of which is fixedly connected to a water-storing cavity opened in the inner wall of the sampling water cylinder, a rotating ring threadedly connected to the arc surface of the drain pipe, a movable ring rotatably connected to one side of the rotating ring, the inner wall of the movable ring slidingly connected to the arc surface of the drain pipe, a retaining ring fixedly connected to the inner wall of the drain pipe, an adjusting pipe slidingly passing through the inner wall of the retaining ring, the adjusting pipe having an I-shaped cross-section, a plurality of water outlet holes opened in the arc surface of the adjusting pipe, a fixing frame fixedly connected to the end of the adjusting pipe away from the sampling water cylinder, and the two ends of the fixing frame fixedly connected to the surface of the movable ring.

[0017] In some embodiments, the end of the regulating tube near the fixed frame is closed, and a guide block is fixedly connected to the bottom of the inner wall of the regulating tube. The cross-section of the guide block is conical.

[0018] In some embodiments, a sealing gasket, which is a rubber gasket, is fixedly connected to the arc-shaped sidewall of the regulating tube.

[0019] Through the above technical solution, the wastewater quality testing sampling device provided in this application can open and close the water storage chamber inside the sampling tube by means of a drive mechanism during the wastewater quality testing sampling process. The second rotating shaft drives the deflection of the closing block, thereby allowing the closing block to open and close with the water inlet. At this time, with the help of three independent water storage chambers, multiple samples can be collected simultaneously or stored in different time periods, improving efficiency and avoiding cross-contamination. At the same time, the filter mechanism set on the surface of the sampling tube filters the collected water for impurities, which helps to avoid the impact of impurities on water quality. Meanwhile, the drainage mechanism set on one side of the sampling tube effectively discharges the collected water for testing. The horizontal movement of the regulating pipe facilitates the sealing operation of the inner wall of the drainage pipe. The integrated design of multi-chamber sampling, rapid filtration and controllable drainage can complete the entire process from sampling to testing in a single operation, saving time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure disclosed in the embodiments of this application;

[0022] Figure 2 This is a cross-sectional schematic diagram of the three-dimensional structure disclosed in the embodiments of this application;

[0023] Figure 3This is a partial structural schematic diagram of the sampling mechanism disclosed in the embodiments of this application;

[0024] Figure 4 This is the embodiment disclosed in this application. Figure 2 A magnified structural diagram at point A;

[0025] Figure 5 This is a schematic diagram of the drainage mechanism disclosed in the embodiments of this application;

[0026] Figure 6 This is disclosed in the embodiments of this application. Figure 5 A schematic diagram of a partial structure;

[0027] Figure 7 This is the embodiment disclosed in this application. Figure 3 A magnified structural diagram at point B.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Support frame; 2. Support plate; 3. Drive mechanism; 31. Connecting plate; 32. First rotating shaft; 33. First bevel gear; 34. Second bevel gear; 35. Second rotating shaft; 36. Rotating block; 37. Outer frame; 4. Sampling mechanism; 41. Sampling water cylinder; 42. Closing block; 43. Water inlet; 44. Sealing ring; 45. Water storage cavity; 46. Water inlet frame; 5. Drainage mechanism; 51. Drainage pipe; 52. Retaining ring; 53. Rotating ring; 54. Moving ring; 55. Fixed frame; 56. Adjusting pipe; 57. Sealing gasket; 58. Water outlet; 59. Guide block; 6. Filtering mechanism; 61. Filter frame; 62. Mounting frame; 63. Connecting plate; 64. Mounting block; 65. Extrusion shaft; 66. Limiting rod. Detailed Implementation

[0030] The embodiments of this application will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application. This application can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0031] These embodiments are provided to make the application thorough and complete, and to fully express the scope of the application to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values ​​illustrated in these embodiments should be interpreted as merely exemplary and not as limiting.

[0032] It should be noted that, in the description of this application, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationship, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0033] Furthermore, the terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. "Vertical" is not strictly vertical, but within the permissible margin of error. "Parallel" is not strictly parallel, but within the permissible margin of error. Terms such as "including" or "contains" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well.

[0034] It should also be noted that, in the description of this application, unless otherwise expressly 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. Those skilled in the art can understand the specific meaning of the above terms in this application depending on the specific circumstances. When a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device.

[0035] All terms used in this application have the same meaning as understood by one of ordinary skill in the art to which this application pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0036] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0037] Reference Figures 1 to 7As shown, this utility model provides a technical solution: a sampling device for wastewater quality testing, comprising: a support frame 1, with a support plate 2 disposed on the arc surface of the support frame 1; a driving mechanism 3 disposed on one end surface of the support plate 2; a sampling mechanism 4 disposed on the lower surface of the support plate 2 corresponding to the position of the driving mechanism 3; a filtering mechanism 6 disposed on one side surface of the sampling mechanism 4; and a drainage mechanism 5 disposed on the side wall surface of the sampling mechanism 4.

[0038] During the process of sampling and testing wastewater, the entire water quality testing and sampling equipment is first supported and fixed in position by the support frame 1. Then, the position is moved and adjusted by the support plate 2 on the surface of the support frame 1, so that the sampling mechanism 4 on the lower surface of one end of the support plate 2 is placed in the wastewater. Next, the drive mechanism 3 on the surface of the support plate 2 is rotated, thereby opening and closing the water inlet and outlet of the sampling water tube 41 in the sampling mechanism 4. During this process, the filter mechanism 6 set on the surface of the sampling water tube 41 can also be used to filter impurities in the wastewater. After the water quality sampling is completed, the sampled water is quickly discharged by the drainage mechanism 5 set on one side of the sampling water tube 41.

[0039] The following section will explain the specific setup and function of the sampling mechanism 4, the filtering mechanism 6, the driving mechanism 3, and the drainage mechanism 5.

[0040] Reference Figure 3As shown in this embodiment: the sampling mechanism 4 includes a sampling water cylinder 41 and a closing block 42. The upper end of the sampling water cylinder 41 is fixedly connected to the lower surface of the support plate 2. The sampling water cylinder 41 is used to sample the sewage water quality. At the same time, the fixed connection between the sampling water cylinder 41 and the support plate 2 improves the overall structural rigidity and ensures the stability of the sampling process. The inner wall of the sampling water cylinder 41 is evenly provided with three water storage cavities 45. The three water storage cavities 45 are evenly distributed, which can collect multiple water samples simultaneously or store them in stages, improving sampling efficiency. At the same time, the independent cavity design avoids cross-contamination of samples and ensures data accuracy. The inner wall of the sampling water cylinder 41 is fixedly connected to a water inlet frame 46. The cross-section of the water inlet frame 46 is concave. The concave structure guides the water flow to concentrate and flow into the water inlet hole 43, reducing the influence of turbulence. The water inlet frame 46 has an inlet hole 43 on its inner wall. The inlet hole 43 is matched with the closing block 42 to quickly and conveniently collect water. The closing block 42 is positioned corresponding to the inlet hole 43 by means of the driving mechanism 3. The sampling mechanism 4 also includes a sealing ring 44, which is fixedly connected to the inner wall surface of the water inlet frame 46 and corresponds to the position of the inlet hole 43. The sealing ring 44 can increase the sealing performance of the inlet hole 43 and prevent water leakage. The arc surface of the second rotating shaft 35 is fixedly connected to the closing block 42. The surface of the closing block 42 abuts against the surface of the sealing ring 44. The cross-section of the closing block 42 is semi-circular. The closing block 42 can be used to open and close the water inlet. The cross-sectional dimensions of the closing block 42 are adapted to the cross-sectional dimensions of the water inlet frame 46.

[0041] Reference Figure 7 As shown in this embodiment: the filtration mechanism 6 includes a filter frame 61, the surface of which is engaged with the surface of the sampling water cylinder 41. The filter frame 61 can filter the collected water to prevent impurities from entering. Mounting frames 62 are fixedly connected to both ends of the filter frame 61. The interlocking connection between the mounting frames 62 and the mounting blocks 64 effectively and quickly fixes and limits the filter frame 61. A connecting plate 63 is fixedly connected to the surface of the sampling water cylinder 41 at the position corresponding to the mounting frames 62. The connecting plate 63 is used to support and limit the position of the mounting blocks 64. The connecting plate 63 has a threaded extrusion shaft 65 that can move the position of the mounting block 64. One end of the extrusion shaft 65 is fixedly connected to the mounting block 64. The surface of the mounting block 64 is inserted into the inner wall of the mounting frame 62. The filter mechanism 6 also includes a limiting rod 66, which can limit the movement of the mounting block 64 to prevent the mounting block 64 from shifting during insertion. One end of the limiting rod 66 is fixedly connected to the surface of the mounting block 64, and the arc surface of the limiting rod 66 slides through the surface of the connecting plate 63.

[0042] Reference Figure 2As shown, in this embodiment: the drive mechanism 3 includes a connecting plate 31 and a second rotating shaft 35. The bottom end of the connecting plate 31 is fixedly connected to the surface of the support plate 2. The connecting plate 31 is used to support and limit the position of the first rotating shaft 32. The first rotating shaft 32 is rotatably connected to the surface of the connecting plate 31. The first rotating shaft 32 and the first bevel gear 33 are matched to allow rotation between the second rotating shaft 35 and the second bevel gear 34. A rotating block 36 is fixedly connected to the end of the first rotating shaft 32 near the support frame 1. The rotating block 36 is used to support the first rotating shaft 32. The first rotating shaft 32 is used for rotational operation. The end of the first rotating shaft 32 away from the support frame 1 is fixedly connected to the first bevel tooth 33. The second rotating shaft 35 is rotatably connected to the support plate 2 and the inner wall of the sampling water cylinder 41. The upper end of the second rotating shaft 35 is fixedly connected to the second bevel tooth 34. The second bevel tooth 34 meshes with the tooth surface of the first bevel tooth 33. The upper surface of the support plate 2 is fixedly connected to the outer frame 37. The outer frame 37 can effectively protect the first bevel tooth 33 and the second bevel tooth 34. The first bevel tooth 33 and the second bevel tooth 34 are located inside the outer frame 37.

[0043] Reference Figure 4 , Figure 5 and Figure 6 As shown in this embodiment: the drainage mechanism 5 includes a drainage pipe 51. The arc surface of the drainage pipe 51 is fixedly connected to the water storage cavity 45 opened in the inner wall of the sampling water cylinder 41. The drainage pipe 51 can drain the water in the water storage cavity 45. A rotating ring 53 is threadedly connected to the arc surface of the drainage pipe 51. The rotating ring 53 can effectively drive the moving ring 54 to adjust its position. The moving ring 54 is rotatably connected to one side of the rotating ring 53. The inner wall of the moving ring 54 is slidably connected to the arc surface of the drainage pipe 51. A retaining ring 52 is fixedly connected to the inner wall of the drainage pipe 51. The combination of the retaining ring 52 and the regulating pipe 56 can effectively seal and open / close the drainage pipe 51. The regulating pipe 56 slides through the inner wall of the retaining ring 52. The horizontal movement of the regulating pipe 56 can adjust the water quality. The regulating pipe 56 has an I-shaped cross-section and several water outlet holes 58 on its arc surface. A fixing frame 55 is fixedly connected to the end of the regulating pipe 56 away from the sampling water cylinder 41. The fixing frame 55 is used to fix the position of the entire regulating pipe 56. The two ends of the fixing frame 55 are fixedly connected to the surface of the moving ring 54. The end of the regulating pipe 56 near the fixing frame 55 is closed. A guide block 59 is fixedly connected to the bottom of the inner wall of the regulating pipe 56. The guide block 59 can effectively reduce the impact of the water flow. The cross-section of the guide block 59 is conical. A sealing gasket 57 is fixedly connected to the side wall of the arc surface of the regulating pipe 56. The sealing gasket 57 is a rubber gasket. The sealing gasket 57 can effectively perform the sealing operation, which facilitates the closing and sealing operation of the drain pipe 51.

[0044] Working principle: During the sampling and testing of wastewater quality, the support plate 2 on the surface of the support frame 1 is first moved to a suitable position, and the sampling mechanism 4 installed on one side of the support plate 2 is simultaneously deployed into the wastewater area. Then, the drive mechanism 3 is operated, rotating the rotating block 36 at one end of the connecting plate 31, causing the rotating block 36 to drive the first bevel tooth 33 at one end of the first rotating shaft 32 to rotate relative to the second bevel tooth 34 at the upper end of the second rotating shaft 35. At this time, the second rotating shaft 35 will drive the closing block 4 inside the sampling water cylinder 41. 2. The sampling water cylinder 41 is deflected. Since the water storage cavity 45 of the sampling water cylinder 41 is closed at this time, when the closing block 42 rotates clockwise, the closing block 42 and the water inlet frame 46 connected to the inner wall of the sampling water cylinder 41 are separated. At this time, the water inlet hole 43 opened on the inner wall of the water inlet frame 46 will open, and water will enter the water storage cavity 45. At the same time, the filter mechanism 6 set on the surface of the sampling water cylinder 41 will filter the impurities in the water. At the same time, the installation frame 62 fixed on both sides of the filter frame 61 and the surface of the connecting plate 63 are squeezed by the extrusion shaft 6. 5. The movable control mounting block 64 is inserted and fixed, thus facilitating the disassembly and cleaning of the filter frame 61. After the water in the water storage cavity 45 of the sampling water tube 41 is filled with water, the closing block 42 is rotated counterclockwise to re-close the closing block 42 with the water inlet 43. Then, the entire sampling mechanism 4 is lifted out. To facilitate the detection and removal of the water quality in the water storage cavity 45, the drainage mechanism 5 set on one side of the sampling water tube 41 can be used for auxiliary operation. The circular surface of the drainage pipe 51 is rotated. The rotating ring 53 drives the moving ring 54 to slide. At this time, the two sides of the moving ring 54 will drive the fixed frame 55 to move. One end of the fixed frame 55 is fixed to the regulating pipe 56. At this time, the drain pipe 51 is in a closed state. When the regulating pipe 56 moves along the retaining ring 52 to the maximum moving distance, the drain pipe 51 is in an open state. At this time, the water can be discharged from the drain pipe 51 through the inner wall of the regulating pipe 56 and the water outlet 58 opened on the surface of the regulating pipe 56, so as to test the quality of the discharged water.

[0045] The embodiments of this application have now been described in detail. To avoid obscuring the concept of this application, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0046] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any manner.

Claims

1. A sampling device for wastewater quality testing, characterized in that, include: A support frame (1) is provided with a support plate (2) on its arc surface; A drive mechanism (3) is disposed on one end surface of the support plate (2); The sampling mechanism (4) is located on the lower surface of the support plate (2) at a position corresponding to the driving mechanism (3); A filtering mechanism (6) is disposed on one side surface of the sampling mechanism (4); and A drainage mechanism (5) is provided on the side wall surface of the sampling mechanism (4); The sampling mechanism (4) includes a sampling water cylinder (41) and a closing block (42). The upper end of the sampling water cylinder (41) is fixedly connected to the lower surface of the support plate (2). The inner wall of the sampling water cylinder (41) is evenly provided with three water-storing cavities (45). The inner wall of the sampling water cylinder (41) is fixedly connected to a water inlet frame (46). The cross-section of the water inlet frame (46) is concave. The inner wall of the water inlet frame (46) is provided with a water inlet hole (43). The closing block (42) is positioned corresponding to the water inlet hole (43) by means of a driving mechanism (3). The filtration mechanism (6) includes a filter frame (61), the surface of which is engaged with the surface of the sampling water tube (41). Both ends of the filter frame (61) are fixedly connected to mounting frames (62). A connecting plate (63) is fixedly connected to the surface of the sampling water tube (41) at the position corresponding to the mounting frame (62). A pressing shaft (65) is threaded through the surface of the connecting plate (63). One end of the pressing shaft (65) is fixedly connected to a mounting block (64). The surface of the mounting block (64) is inserted into the inner wall of the mounting frame (62).

2. The wastewater quality testing sampling device according to claim 1, characterized in that, The drive mechanism (3) includes a connecting plate (31) and a second rotating shaft (35). The bottom end of the connecting plate (31) is fixedly connected to the surface of the support plate (2). The surface of the connecting plate (31) is rotatably connected to a first rotating shaft (32). A rotating block (36) is fixedly connected to one end of the first rotating shaft (32) near the support frame (1). A first bevel tooth (33) is fixedly connected to one end of the first rotating shaft (32) away from the support frame (1). The second rotating shaft (35) is rotatably connected to the inner wall of the support plate (2) and the sampling water cylinder (41). A second bevel tooth (34) is fixedly connected to the upper end of the second rotating shaft (35). The second bevel tooth (34) meshes with the tooth surface of the first bevel tooth (33). An outer frame (37) is fixedly connected to the upper surface of the support plate (2). The first bevel tooth (33) and the second bevel tooth (34) are located inside the outer frame (37).

3. The wastewater quality testing sampling device according to claim 2, characterized in that, The sampling mechanism (4) also includes a sealing ring (44), which is fixedly connected to the inner wall surface of the water inlet frame (46) and corresponds to the position of the water inlet hole (43). The arc surface of the second rotating shaft (35) is fixedly connected to the closing block (42). The surface of the closing block (42) abuts against the surface of the sealing ring (44). The cross-section of the closing block (42) is semi-circular, and the cross-sectional dimensions of the closing block (42) are adapted to the cross-sectional dimensions of the water inlet frame (46).

4. The wastewater quality testing sampling device according to claim 3, characterized in that, The filter mechanism (6) also includes a limiting rod (66), one end of which is fixedly connected to the surface of the mounting block (64), and the arc surface of the limiting rod (66) slides through the surface of the connecting plate (63).

5. The wastewater quality testing sampling device according to claim 4, characterized in that, The drainage mechanism (5) includes a drainage pipe (51). The arc surface of the drainage pipe (51) is fixedly connected to the water storage cavity (45) opened on the inner wall of the sampling water cylinder (41). A rotating ring (53) is threadedly connected to the arc surface of the drainage pipe (51). A movable ring (54) is rotatably connected to one side of the rotating ring (53). The inner wall of the movable ring (54) is slidably connected to the arc surface of the drainage pipe (51). A retaining ring (52) is fixedly connected to the inner wall of the drainage pipe (51). An adjusting pipe (56) slides through the inner wall of the retaining ring (52). The cross-section of the adjusting pipe (56) is I-shaped. Several water outlet holes (58) are opened on the arc surface of the adjusting pipe (56). A fixing frame (55) is fixedly connected to one end of the adjusting pipe (56) away from the sampling water cylinder (41). The two ends of the fixing frame (55) are fixedly connected to the surface of the movable ring (54).

6. The wastewater quality testing sampling device according to claim 5, characterized in that, The end of the regulating tube (56) near the fixed frame (55) is closed. A guide block (59) is fixedly connected to the bottom of the inner wall of the regulating tube (56). The cross-section of the guide block (59) is conical.

7. The wastewater quality testing sampling device according to claim 6, characterized in that, A sealing gasket (57) is fixedly connected to the arc-shaped side wall of the regulating tube (56), and the sealing gasket (57) is a rubber gasket.

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