Sampling device for detecting cadmium polluted water

Abstract

A sample introduction device for detection of cadmium polluted water belongs to the technical field of sample introduction for detection of cadmium polluted water, and comprises a bottom plate, a sample introduction port is arranged on the upper surface of the bottom plate in a penetrating manner, a T-shaped carrying column is embedded and rotatably mounted on the upper surface of the bottom plate, a rotation driving device is mounted between the T-shaped carrying column and the bottom plate, and a plurality of guide rods are slidably mounted on the upper surface of the T-shaped carrying column in a penetrating manner. A lifting plate is fixedly installed between the upper surfaces of the multiple guide rods, an electric telescopic rod is fixedly installed between the lifting plate and the T-shaped carrying column, an electric injector is fixedly installed on the lower surface of the end, away from the guide rods, of the lifting plate, a bracket A is integrally formed in the middle of the lifting plate, and a liquid storage box is inserted into the bracket A; a connecting pipe with an electric control valve is connected between the liquid storage box and the bottom of the cavity of the electric injector, and a detachable waste liquid box is mounted on the rear surface of the bottom plate, so that the sampling cavity can be cleaned more conveniently and efficiently, and the adverse effect on the detection efficiency due to inconvenience in cleaning is effectively avoided.

Description

Technical Field

[0001] This utility model belongs to the field of cadmium-polluted water detection and sampling technology, specifically relating to a sampling device for cadmium-polluted water detection. Background Technology

[0002] Cadmium (Cd) is a widespread environmental pollutant, making it necessary to detect cadmium-contaminated water.

[0003] Traditional cadmium-contaminated water sampling devices leave a small amount of complex sample residue inside the sampling chamber after the sampling operation, including organic compounds and particulate impurities. Due to the lack of effective cleaning methods, components are usually disassembled for manual cleaning, which is not only cumbersome but also affects detection efficiency.

[0004] If the sampling chamber is not cleaned, these residues will accumulate over time, potentially triggering chemical reactions that corrode the inner wall material of the chamber and reduce the lifespan of the sampling device. Furthermore, they can introduce new samples into subsequent sampling processes, altering the original composition and concentration of the sample. This can lead to deviations and increased errors in the detection data, severely impacting the accuracy and repeatability of cadmium-contaminated water detectors in sample composition analysis. Therefore, an alternative sampling device for cadmium-contaminated water detection is provided to address these technical problems. Utility Model Content

[0005] To address the shortcomings of existing cadmium-contaminated water sampling devices, which lack effective cleaning methods and require manual disassembly and cleaning, resulting in cumbersome cleaning processes and reduced detection efficiency, this invention provides a cadmium-contaminated water sampling device. A storage container is housed within a mounting frame using a bracket A, and a connecting pipe with an electrically controlled valve connects the storage container to the bottom of the chamber of an electric injector. During cleaning of the electric injector, the electrically controlled valve of the sampling tube can be closed, while the electrically controlled valve of the connecting pipe can be opened, thereby drawing the cleaning solution from the storage container into the chamber of the electric injector. The electrically controlled valve of the sampling tube can then be opened, and the electrically controlled valve of the connecting pipe closed, draining the cleaning solution from the chamber of the electric injector, achieving the cleaning purpose. Waste liquid generated after cleaning can be collected in a waste liquid box. This design makes cleaning the sampling chamber more convenient and efficient, effectively avoiding the adverse effects on detection efficiency caused by inconvenient cleaning. It effectively solves the problems of existing cadmium-contaminated water detector sample sampling devices, which lack effective cleaning methods and require manual disassembly and cleaning, resulting in cumbersome cleaning processes and reduced detection efficiency. The specific technical solution is as follows:

[0006] A sampling device for detecting cadmium-contaminated water includes a base plate. A sampling port is provided through the upper surface of the base plate. A T-shaped carrier column is rotatably mounted on the upper surface of the base plate. A driving device is installed between the T-shaped carrier column and the base plate. Multiple guide rods are slidably mounted through the upper surface of the T-shaped carrier column. A lifting plate is fixedly installed between the upper surfaces of the multiple guide rods. An electric telescopic rod is fixedly installed between the lifting plate and the T-shaped carrier column. An electric injector is fixedly installed on the lower surface of the end of the lifting plate away from the guide rods. A bracket A is integrally formed in the middle of the lifting plate. A liquid storage box is inserted into the bracket A. A connecting pipe with an electrically controlled valve connects the liquid storage box and the bottom of the cavity of the electric injector. A removable waste liquid box is installed on the rear surface of the base plate. The waste liquid box and the sampling port are both located on a circular circumferential rotation path of the electric injector centered on the T-shaped carrier column.

[0007] In the above technical solution, an L-shaped plate 23 is fixedly installed on the right end of the upper surface of the lifting plate 22. The electric injector 3 includes a sampling tube 31. A sampling head 311 with an electrically controlled valve is provided at the bottom of the sampling tube 31. The connecting pipe 25 is fixedly connected to the sampling tube 31, and the connecting pipe 25 and the sampling tube 31 are interconnected. The sampling tube 31 is fixedly installed on the lower surface of the lifting plate 22, and the inner cavity of the sampling tube 31 is connected to the upper surface of the lifting plate 22. A piston 33 is slidably installed inside the sampling tube 31. A miniature electric telescopic rod 32 is fixedly installed between the upper surface of the piston 33 and the lower surface of the L-shaped plate 23.

[0008] In the above technical solution, a bracket B is fixedly installed on the rear surface of the base plate, and the waste liquid box is inserted and placed in the bracket B.

[0009] In the above technical solution, the driving device includes a driven gear ring sleeved on the outer surface of the T-shaped support column and a stepper motor fixedly installed on the upper surface of the base plate. The outer surface of the output shaft of the stepper motor is sleeved with a driving gear, and the driving gear and the driven gear ring are meshed together.

[0010] In the above technical solution, a positioning ring is fixedly installed on the upper surface of the base plate, and the positioning ring is located directly below the sampling tube.

[0011] In the above technical solution, a reinforcing frame is fixedly installed on the upper surface of the base plate, and the T-shaped support column is rotatably installed inside the reinforcing frame.

[0012] The present invention provides a sampling device for detecting cadmium-contaminated water, which, compared with the prior art, has the following advantages:

[0013] I. This utility model utilizes a bracket A within a lifting frame to house a liquid storage box, and a connecting pipe equipped with an electrically controlled valve connects the liquid storage box to the bottom of the cavity of an electric injector. During cleaning of the electric injector, the electrically controlled valve of the sampling tube can be closed, while the electrically controlled valve of the connecting pipe can be opened, thereby drawing the cleaning fluid from the liquid storage box into the cavity of the electric injector. Alternatively, the electrically controlled valve of the sampling tube can be opened, and the electrically controlled valve of the connecting pipe can be closed, draining the cleaning fluid from the cavity of the electric injector, achieving the cleaning purpose. Furthermore, the waste fluid generated after cleaning can be collected in a waste fluid box. This design makes cleaning the sampling cavity more convenient and efficient, effectively avoiding the adverse effects on detection efficiency caused by inconvenient cleaning.

[0014] II. This utility model, by setting a positioning ring on the upper surface of the base plate, enables the sample cup to be precisely nested therein, thereby accurately positioning it directly below the electric injector. This effectively constrains the position of the sample cup, reduces injection errors, and improves the accuracy and reliability of injection, providing a precise sample introduction basis for the analysis of cadmium-contaminated water detectors and helping to carry out detection work efficiently. Attached Figure Description

[0015] Figure 1 This is a cross-sectional structural diagram of the present invention.

[0016] Figure 2 This is a schematic diagram of the main structure of this utility model.

[0017] Figure 3 This is a schematic diagram of the rear view structure of this utility model.

[0018] Figures 1-3 The components include: 1. Base plate; 11. Inlet port; 12. Positioning ring; 13. Bracket B; 2. T-shaped column; 21. Guide rod; 221. Electric telescopic rod; 222. Bracket A; 22. Lifting plate; 23. L-shaped plate; 24. Liquid storage box; 25. Connecting tube; 3. Electric injector; 31. Sampling tube; 311. Sampling head; 32. Miniature electric telescopic rod; 33. Piston; 4. Drive mechanism; 41. Driven gear ring; 42. Stepper motor; 43. Drive gear; 5. Waste liquid box; 6. Reinforcing frame. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In this embodiment, front, back, left, right, top, and bottom are... Figure 1 Describe the reference plane. See [link / reference] Figures 1-3 This utility model provides a technical solution:

[0021] A sampling device for detecting cadmium-contaminated water includes a base plate 1. A sampling port 11 is provided through the upper surface of the base plate 1. A T-shaped support column 2 is rotatably mounted on the upper surface of the base plate 1. A driving device 4 is installed between the T-shaped support column 2 and the base plate 1. Multiple guide rods 21 are slidably mounted through the upper surface of the T-shaped support column 2. A lifting plate 22 is fixedly installed between the upper surfaces of the multiple guide rods 21. An electric telescopic rod 221 is fixedly installed between the lifting plate 22 and the T-shaped support column 2. An electric injector 3 is fixedly installed on the lower surface of the end away from the guide rod 21. A bracket A222 is integrally formed in the middle of the lifting plate 22. A liquid storage box 24 is inserted into the bracket A222. A connecting pipe 25 with an electric control valve is connected between the liquid storage box 24 and the bottom of the cavity of the electric injector 3. A detachable waste liquid box 5 is installed on the rear surface of the base plate 1. The waste liquid box 5 and the injection port 11 are both located on the circular circumferential rotation path of the electric injector 3 with the T-shaped carrier column 2 as the center.

[0022] Regarding the usage procedure of the device, firstly, the base plate 1 is securely installed on the cadmium-contaminated water detector using external bolts or screws, ensuring that the sample inlet port 11 is accurately positioned above the cadmium-contaminated water detection tray. Then, the sample to be tested is placed in the sample cup and accurately positioned below the electric injector 3 at a specific location. At this time, the electric telescopic rod 221 is retracted, which, through the lifting plate 22, moves the electric injector 3 vertically downwards, allowing it to smoothly insert into the sample cup to complete the sample extraction operation. After extraction, the electric telescopic rod 221 extends, causing the electric injector 3 to move upwards and detach from the sample cup. Next, the drive mechanism 4 drives the T-shaped carrier column 2 to rotate clockwise, thereby causing the lifting plate 22 and the electric injector 3 to rotate synchronously towards the sample inlet port 11. The rotation stops when the electric injector 3 is precisely rotated above the sample inlet port 11. After that, the electric telescopic rod 221 is retracted again, causing the electric injector 3 to be inserted downward into the sample inlet port 11. Finally, the sample in the electric injector 3 is accurately injected into the detection plate of the cadmium-contaminated water detector through the sample inlet port 11, thereby starting the subsequent detection procedure.

[0023] It should be noted that an L-shaped plate 23 is fixedly installed on the right end of the upper surface of the lifting plate 22. The electric injector 3 includes a sampling tube 31. A sampling head 311 with an electric control valve is provided at the bottom of the sampling tube 31. The connecting tube 25 is fixedly connected to the sampling tube 31, and the connecting tube 25 and the sampling tube 31 are interconnected. The sampling tube 31 is fixedly installed on the lower surface of the lifting plate 22, and the inner cavity of the sampling tube 31 is connected to the upper surface of the lifting plate 22. A piston 33 is slidably installed inside the sampling tube 31. A miniature electric telescopic rod 32 is fixedly installed between the upper surface of the piston 33 and the lower surface of the L-shaped plate 23.

[0024] When the electric injector 3 takes a sample, the electric control valve of the connecting tube 25 is closed and the electric control valve of the sampling head 311 is opened. The extension and retraction of the miniature electric telescopic rod 32 drives the piston 33 to move vertically in the sampling tube 31 to achieve sampling or discharge.

[0025] In the cleaning process of the electric injector 3 chamber, firstly, the solenoid valve of the connecting tube 25 is opened and the solenoid valve of the sampling tube 311 is closed. Then, the electric injector 3 is operated to draw cleaning fluid from the reservoir 24 into its chamber. After the drawing is completed, the solenoid valve of the connecting tube 25 is closed and the solenoid valve of the sampling tube 311 is opened. Subsequently, the electric injector 3 is rotated to a specific position above the waste fluid container 5, and the cleaned waste fluid is discharged into the waste fluid container 5 for collection and storage. To achieve better cleaning results, the above-mentioned cleaning fluid drawing operation can be repeated multiple times during the cleaning process to repeatedly scrub the chamber of the electric injector 3.

[0026] In addition, a bracket B13 is fixedly installed on the rear surface of the base plate 1. The waste liquid box 5 is inserted into the bracket B13. When the waste liquid in the waste liquid box 5 is almost full, it is moved upward and taken out from the bracket B13 to be poured out.

[0027] Specifically, the drive device 4 includes a driven gear ring 41 sleeved on the outer surface of the T-shaped column 2 and a stepper motor 42 fixedly mounted on the upper surface of the base plate 1. The outer surface of the output shaft of the stepper motor 42 is sleeved with a drive gear 43. The drive gear 43 and the driven gear ring 41 are meshed and connected. The stepper motor 42 can rotate clockwise or counterclockwise by the cooperation of the drive gear 43 and the driven gear ring 41.

[0028] To facilitate precise placement of the sample cup directly beneath the electric injector 3, a positioning ring 12 is fixedly installed on the upper surface of the base plate 1. The positioning ring 12 is located directly beneath the sampling tube 31. When actually placing the sample cup, it can be precisely nested within the positioning ring 12, thus being accurately positioned directly beneath the electric injector 3. This effectively constrains the position of the sample cup, reduces injection errors, and improves the accuracy and reliability of injection. It provides a precise sample introduction basis for the analysis of cadmium-contaminated water, and helps to carry out the detection work efficiently.

[0029] To ensure the stability of the T-shaped support column 2, a reinforcing frame 6 is fixedly installed on the upper surface of the base plate 1. The T-shaped support column 2 is rotatably installed within the reinforcing frame 6, such as... Figure 1 As shown, the reinforcing frame 6 can effectively limit the middle part of the T-shaped column 2, which can effectively prevent the T-shaped column 2 from tilting during operation, thereby ensuring that it maintains good stability during rotation and providing strong support for the stable operation of the entire device.

[0030] Finally, it should be noted that the stepper motor 42, electric telescopic rod 221, miniature electric telescopic rod 32 and the electric control valve of the connecting pipe 25 can all be connected to an external PLC controller for pre-programmed control, so that they can work at a certain frequency after startup. Using a PLC controller to control electrical components is a well-known and recognized technology in the field, and will not be elaborated on here.

Claims

1. A sampling device for detecting cadmium-contaminated water, comprising a base plate (1), wherein a sampling port (11) is provided through the upper surface of the base plate (1), characterized in that, A T-shaped support column (2) is rotatably mounted on the upper surface of the base plate (1). A drive device (4) is installed between the T-shaped support column (2) and the base plate (1). Multiple guide rods (21) are slidably mounted through the upper surface of the T-shaped support column (2). A lifting plate (22) is fixedly installed between the upper surfaces of the multiple guide rods (21). An electric telescopic rod (221) is fixedly installed between the lifting plate (22) and the T-shaped support column (2). An electric injector (3) is fixedly installed on the lower surface of the end of the lifting plate (22) away from the guide rod (21). A bracket A (222) is integrally formed in the middle of the lifting plate (22). A liquid storage box (24) is inserted into the bracket A (222). A connecting pipe (25) with an electric control valve is connected between the liquid storage box (24) and the bottom of the cavity of the electric injector (3). A removable waste liquid box (5) is installed on the rear surface of the base plate (1). The waste liquid box (5) and the injection port (11) are both located on the circular circumferential rotation path of the electric injector (3) with the T-shaped carrier column (2) as the center.

2. The sampling device for detecting cadmium-contaminated water according to claim 1, characterized in that, An L-shaped plate (23) is fixedly installed on the right end of the upper surface of the hoisting plate (22); The electric injector (3) includes a sampling tube (31), and a sampling head (311) with an electrically controlled valve is provided at the bottom of the sampling tube (31). The connecting tube (25) is fixedly connected to the sampling tube (31), and the connecting tube (25) and the sampling tube (31) are interconnected. The sampling tube (31) is fixedly installed on the lower surface of the lifting plate (22), and the inner cavity of the sampling tube (31) is connected to the upper surface of the lifting plate (22). A piston (33) is slidably installed inside the sampling tube (31), and a miniature electric telescopic rod (32) is fixedly installed between the upper surface of the piston (33) and the lower surface of the L-shaped plate (23).

3. The sampling device for detecting cadmium-contaminated water according to claim 1, characterized in that, A bracket B (13) is fixedly installed on the rear surface of the base plate (1), and the waste liquid box (5) is inserted into the bracket B (13).

4. The sampling device for detecting cadmium-contaminated water according to claim 1, characterized in that, The drive device (4) includes a driven gear ring (41) sleeved on the outer surface of the T-shaped support column (2) and a stepper motor (42) fixedly installed on the upper surface of the base plate (1). The outer surface of the output shaft of the stepper motor (42) is sleeved with a drive gear (43), and the drive gear (43) meshes with the driven gear ring (41).

5. The sampling device for detecting cadmium-contaminated water according to claim 2, characterized in that, A positioning ring (12) is fixedly installed on the upper surface of the base plate (1), and the positioning ring (12) is located directly below the sampling tube (31).

6. The sampling device for detecting cadmium-contaminated water according to claim 1, characterized in that, A reinforcing frame (6) is fixedly installed on the upper surface of the base plate (1), and the T-shaped support column (2) is rotatably installed inside the reinforcing frame (6).

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