A sampling device for sewage discharge detection

Abstract

The utility model belongs to sewage detection sampling instrument technical field, especially a kind of sampling device for sewage discharge detection.It include storage tank, the lateral wall of storage tank is provided with collection component, the collection component includes installation box, two hydraulic cylinders are installed in installation box, operating lever is provided on the lateral wall of installation box;Piston is all arranged in hydraulic cylinder, two pistons are connected by connecting rod between two pistons;Connecting rod and operating lever are connected by connecting column, through groove is opened on the lateral wall of installation box;Hydraulic cylinder is all connected with liquid inlet pipe, the liquid outlet of liquid inlet pipe is provided with first check valve, hydraulic cylinder is all connected with liquid outlet pipe, the liquid inlet of liquid outlet pipe is provided with second check valve.The utility model makes piston move in corresponding hydraulic cylinder by up and down swing operating lever, to generate pressure, to collect the water sample of sewage outlet, to remove the intervention of peristaltic pump and battery, to reduce the weight of overall structure, to facilitate field carrying.

Description

Technical Field

[0001] This utility model belongs to the technical field of wastewater testing and sampling instruments, and in particular relates to a sampling device for wastewater discharge testing. Background Technology

[0002] In environmental monitoring and wastewater discharge supervision, it is necessary to collect water samples from discharge outlets regularly or irregularly and send them to laboratories for analysis to verify whether the discharged water quality meets standards. Currently, most commercially available automatic water samplers rely on electric peristaltic pumps for power. By controlling the start and stop of the peristaltic pump through a program, timed and quantitative sampling can be achieved, making them relatively comprehensive in function.

[0003] However, these sampling devices powered by peristaltic pumps have significant limitations. The peristaltic pump itself and its associated battery pack are quite heavy, making the entire device cumbersome and inconvenient for inspection personnel to carry to remote areas lacking external power sources or complex sewage outlet environments for sampling. Utility Model Content

[0004] The purpose of this invention is to address the problem that a wastewater discharge testing sampling device is bulky and inconvenient to carry.

[0005] The wastewater discharge testing sampling device includes a storage box. A water sample collection assembly is mounted on the side wall of the storage box. The collection assembly includes a mounting box fixed to the side wall of the storage box. Two hydraulic cylinders are installed inside the mounting box. An operating lever is mounted on the outer side wall of the mounting box, and the connecting end of the operating lever is hinged to the mounting box via a hinge pin. The hydraulic cylinders are generally arc-shaped, with their arc center located on the center line of the hinge pin. Each hydraulic cylinder contains a piston that fits against the inner side wall of the cylinder. The two pistons are connected by a connecting rod. The connecting rod is also generally arc-shaped, with its arc center aligned with the hydraulic cylinder. The arc centers are located on the same straight line; the connecting rod and the operating rod are connected by a connecting column, and a through groove is opened on the side wall of the mounting box for the connecting column to move; each hydraulic cylinder is connected to an inlet pipe that communicates with its interior, and the outlet of the inlet pipe is equipped with a first check valve that limits the liquid from entering the hydraulic cylinder; each hydraulic cylinder is connected to an outlet pipe that communicates with its interior, and the inlet of the outlet pipe is equipped with a second check valve that limits the liquid from exiting the hydraulic cylinder; the inlets of the two inlet pipes are connected and communicate with each other through a first tee connector; the outlets of the two outlet pipes are connected and communicate with each other through a second tee connector.

[0006] Furthermore, the connection ports of both the first tee connector and the second tee connector penetrate the side wall of the mounting box and are located on its outer side.

[0007] Furthermore, a sleeve is fixed to the operating rod, and the connecting column is independently installed inside the sleeve.

[0008] Furthermore, the operating lever has a hollow internal structure, and a telescopic rod is installed inside the operating lever. The telescopic end of the telescopic rod extends out of the operating lever and is fixed with a handle. A locking screw is provided on the operating lever to lock the telescopic rod.

[0009] Furthermore, the bottoms of the two hydraulic cylinders are fixed to the bottom of the mounting box and the inner side wall of the mounting box, respectively.

[0010] Furthermore, one piston is positioned at the port of the corresponding hydraulic cylinder, while the other piston is close to the bottom of the corresponding hydraulic cylinder.

[0011] Compared with the prior art, the present invention has the following beneficial effects: This invention uses a swinging control lever to move a piston within a corresponding hydraulic cylinder, thereby generating pressure to collect water samples from the drain outlet. This eliminates the need for a peristaltic pump and battery, thus reducing the overall weight of the structure and making it easier to carry in the field. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a three-dimensional structural diagram of the present invention; Figure 3 To obtain the exploded structure diagram of the component; The components in the diagram are named as follows: 1. Mounting box; 2. Connecting rod; 3. Liquid outlet pipe; 4. Second tee connector; 5. Top plate; 6. First tee connector; 7. Liquid inlet pipe; 8. First check valve; 9. Second check valve; 10. Piston; 11. Hydraulic cylinder; 12. Storage tank; 13. Handle; 14. Hinge pin; 15. Operating lever; 16. Through groove; 17. Locking screw; 18. Telescopic rod; 19. Sleeve; 20. Connecting column. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0014] Example This embodiment describes a sampling device for detecting wastewater discharge, such as... Figures 1 to 3As shown, the system includes a storage box 12, which contains sampling bottles for collecting water samples. One storage box 12 can hold multiple bottles at the same time. A water sample collection assembly is provided on the side wall of the storage box 12. The collection assembly includes a mounting box 1, which is fixed to the side wall of the storage box 12. Two hydraulic cylinders 11 are installed inside the mounting box 1, and the bottoms of the two hydraulic cylinders 11 are fixed to the bottom of the mounting box 1 and the inner side wall of the mounting box 1, respectively.

[0015] An operating lever 15 is provided on the outer wall of the mounting box 1. The connecting end of the operating lever 15 is hinged to the mounting box 1 via a hinge pin 14. The hydraulic cylinder 11 has an overall arc-shaped structure, with its arc center located on the center line of the hinge pin 14. A piston 10 is provided inside each hydraulic cylinder 11. The piston 10 can slide along the arc-shaped cylinder body. The piston 10 is in contact with the inner wall of the hydraulic cylinder 11.

[0016] The two pistons 10 are connected by a connecting rod 2 to ensure synchronous movement. The connecting rod 2 has an arc-shaped structure, and its center of arc is on the same straight line as the center of arc of the hydraulic cylinder 11. That is to say, the centers of arc of both the hydraulic cylinder 11 and the connecting rod 2 are located on the center line of the hinge pin 14. This makes the movement trajectory of the connecting rod 2 consistent with the arc of the hydraulic cylinder 11, enabling the piston 10 to slide within the hydraulic cylinder 11 without causing motion interference.

[0017] The connecting rod 2 and the operating rod 15 are connected by a connecting column 20. The operating rod 15 and the connecting rod 2 transmit power through the connecting column 20. A sleeve 19 is fixed on the operating rod 15. The connecting column 20 is independently installed in the sleeve 19. One end of the connecting column 20 is connected to the middle of the connecting rod 2, and the other end is independently installed in the sleeve 19. When the operating rod 15 swings, it can drive the connecting rod 2 to move in an arc-shaped trajectory.

[0018] The side wall of the mounting box 1 is provided with a through groove 16 that is open to the inside and outside and is used to connect the movement of the column 20. The through groove 16 is arc-shaped and its arc trajectory is connected to the connecting rod 2. When the operating rod 15 swings, the connecting rod 20 can slide in the through groove 16 with the swing of the operating rod 15, thereby driving the connecting rod 2 to swing.

[0019] Each hydraulic cylinder 11 is connected to an inlet pipe 7 that communicates with its interior. The outlet of the inlet pipe 7 is equipped with a first check valve 8 that restricts liquid entry into the hydraulic cylinder 11. Each hydraulic cylinder 11 is also connected to an outlet pipe 3 that communicates with its interior. The inlet of the outlet pipe 3 is equipped with a second check valve 9 that restricts liquid discharge from the hydraulic cylinder 11. Each hydraulic cylinder 11 has one inlet pipe 7 and one outlet pipe 3 connected to its cylinder body. A first check valve 8 is installed at the outlet of the inlet pipe 7, with one end of the first check valve 8 leading into the hydraulic cylinder 11. The first check valve 8 only allows liquid to flow into the hydraulic cylinder 11 from the inlet pipe 7. An inlet hole is located near the bottom of the hydraulic cylinder 11. The first check valve 8 is installed in the inlet hole and forms a seal with it. The inlet of the inlet pipe 7 is connected to and communicates with the first check valve 8. A second check valve 9 is installed at the outlet end of the outlet pipe 3, and its direction is set to allow liquid to flow into the outlet pipe 3 only from the hydraulic cylinder 11; the hydraulic cylinder 11 has an outlet hole near the bottom of the cylinder, and the second check valve 9 is installed in the outlet hole to connect the interior of the hydraulic cylinder 11 with the outlet pipe 3.

[0020] The inlets of the two inlet pipes 7 are connected and communicate with each other through a first tee connector 6. The inlets of the two inlet pipes 7 converge through a first tee connector 6, connecting to a single sampling pipe. A first through hole, communicating both internally and externally, is provided on the right side wall of the mounting box 1. The end of the first tee connector 6 connected to the sampling pipe extends through the first through hole and is located outside the mounting box 1. The outlets of the two outlet pipes 3 are connected and communicate with each other through a second tee connector 4. The outlets of the two outlet pipes 3 converge through a second tee connector 4, connecting to a single main drain pipe. The outlet of this drain pipe leads to a sample container placed inside the storage box 12. A second through hole, communicating both internally and externally, is provided on the left side wall of the mounting box 1. The end of the second tee connector 4 connected to the drain pipe passes through the second through hole for connection and communication with the drain pipe.

[0021] The operating lever 15 has a hollow interior, through which a telescopic rod 18 is installed. The telescopic end of the telescopic rod 18 extends out of the operating lever 15 and is fixed with a handle 13. A locking screw 17 is provided on the operating lever 15 to lock the telescopic rod 18. By tightening or loosening the locking screw 17 on the operating lever 15, the extension length of the telescopic rod 18 can be fixed or adjusted, thereby changing the operating lever arm to adapt to different operational needs. Simultaneously, the change in lever arm also helps to save effort.

[0022] In actual use: In the initial state, one piston 10 is located at the cylinder port of the corresponding hydraulic cylinder 11, and the other piston 10 is close to the cylinder bottom of the corresponding hydraulic cylinder 11.

[0023] The operator holds handle 13 and swings operating lever 15 up and down. Operating lever 15, through connecting column 20 and sleeve 19, pushes connecting rod 2 along its arc trajectory, thereby causing two pistons 10 to slide synchronously within their respective hydraulic cylinders 11. In one hydraulic cylinder 11, piston 10 moves towards the bottom, reducing its internal volume and increasing pressure. At this time, the first one-way valve 8 closes, the second one-way valve 9 opens, and the liquid inside the cylinder is forced into the outlet pipe 3, ultimately being discharged to the sample container through the second three-way connector 4. In the other hydraulic cylinder 11, piston 10 moves towards the cylinder opening, increasing its internal volume and creating negative pressure. At this time, the second one-way valve 9 closes, the first one-way valve 8 is opened by external atmospheric pressure, and the wastewater to be sampled is drawn into this hydraulic cylinder 11 through the suction pipe and the first three-way connector 6.

[0024] As the operating lever 15 swings up and down, the above processes alternate. The hydraulic cylinder 11, which was originally draining, begins to draw in liquid, while the hydraulic cylinder 11, which was originally drawing in liquid, begins to drain. By repeatedly swinging the operating lever 15 up and down in this cycle, continuous and stable sampling operations can be achieved, improving work efficiency. Since the upper hydraulic cylinder 11 is in a horizontal position, the water sample entering the hydraulic cylinder 11 cannot easily be discharged through the upper second one-way valve 9. Therefore, a guide pipe connected to the second one-way valve 9 can be connected, with the other end of the guide pipe close to the first one-way valve 8. When the pressure inside the hydraulic cylinder 11 increases, it facilitates the delivery of the water sample.

[0025] The ingenious dual-cylinder arc-shaped piston pump structure eliminates the need for traditional electric peristaltic pumps and heavy batteries, allowing sampling to be completed solely by manual operation. This significantly reduces the overall weight of the equipment, resulting in a compact and reliable design that is particularly suitable for portable use in the field or in environments without power. It also correspondingly reduces production costs.

Claims

1. A sampling device for detecting wastewater discharge, comprising a storage tank (12), wherein a water sample collection component is provided on the side wall of the storage tank (12), characterized in that: The acquisition component includes a mounting box (1), which is fixed to the side wall of the storage box (12). Two hydraulic cylinders (11) are installed inside the mounting box (1). An operating rod (15) is provided on the outer side wall of the mounting box (1). The connecting end of the operating rod (15) is hinged to the mounting box (1) by a hinge pin (14). The hydraulic cylinder (11) has an arc-shaped structure, and its arc center is located on the center line of the hinge pin (14). A piston (10) is provided inside each hydraulic cylinder (11). The piston (10) is in contact with the inner side wall of the hydraulic cylinder (11). The two pistons (10) are connected by a connecting rod (2). The connecting rod (2) has an arc-shaped structure, and its arc center is on the same straight line as the arc center of the hydraulic cylinder (11). The connecting rod (2) is connected to the operating rod (11) by a connecting rod (2). The rods (15) are connected by connecting columns (20). The side wall of the mounting box (1) is provided with a through groove (16) that is open to the inside and outside and is used for the movement of the connecting columns (20). Each hydraulic cylinder (11) is connected to an inlet pipe (7) that is connected to its interior. The outlet of the inlet pipe (7) is provided with a first check valve (8) that limits the liquid from entering the hydraulic cylinder (11). Each hydraulic cylinder (11) is connected to an outlet pipe (3) that is connected to its interior. The inlet of the outlet pipe (3) is provided with a second check valve (9) that limits the liquid from being discharged from the hydraulic cylinder (11). The inlets of the two inlet pipes (7) are connected and communicate with each other through a first three-way connector (6). The outlets of the two outlet pipes (3) are connected and communicate with each other through a second three-way connector (4).

2. The sampling device for wastewater discharge detection according to claim 1, characterized in that: The connection ports of the first tee connector (6) and the second tee connector (4) both penetrate the side wall of the mounting box (1) and are located on its outer side.

3. The sampling device for wastewater discharge detection according to claim 1, characterized in that: A sleeve (19) is fixed on the operating rod (15), and the connecting column (20) is independently installed inside the sleeve (19).

4. The sampling device for wastewater discharge detection according to claim 1, characterized in that: The operating lever (15) has a hollow interior and a telescopic rod (18) is installed inside the operating lever (15). The telescopic end of the telescopic rod (18) extends out of the operating lever (15) and is fixed with a handle (13). A locking screw (17) is provided on the operating lever (15) to lock the telescopic rod (18).

5. The wastewater discharge detection sampling device according to claim 1, characterized in that: The bottoms of the two hydraulic cylinders (11) are fixed to the bottom of the mounting box (1) and the inner wall of the mounting box (1), respectively.

6. The sampling device for wastewater discharge detection according to claim 1, characterized in that: One piston (10) is located at the cylinder port of the corresponding hydraulic cylinder (11), while the other piston (10) is close to the bottom of the corresponding hydraulic cylinder (11).

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