Anti-escape sulfide sampling device

Abstract

The utility model relates to the technical field of sulfide detection, and discloses an anti-escape sulfide sampling device which comprises a polytetrafluoroethylene connector and a collecting bottle, and further comprises a conveying hose and a threaded cover, and the conveying hose is arranged between the polytetrafluoroethylene connector and the collecting bottle; the upper end of the threaded cover is fixedly connected with a quick connector used for being connected with a conveying hose, a piston is slidably connected into the quick connector, vent holes are annularly distributed in the surface of the threaded cover, and a blocking cover is arranged at the vent holes in the upper end of the threaded cover. When the anti-escape sulfide sampling device is used, a sample directly enters the collecting bottle through the silicone tube and goes deep below the liquid level of a fixing agent, so that the sample is ensured not to be in contact with air all the time, the sample is ensured not to be influenced by the outside world, the anti-escape sulfide sampling device has good sealing performance, and after the collecting bottle is taken down, the inlet of the collecting bottle is sealed simultaneously; therefore, a self-locking effect is achieved, and external air is prevented from entering to influence subsequent detection.

Description

Sampling device for preventing the escape of sulfides Technical Field

[0001] This utility model relates to the field of sulfide detection technology, and in particular to a sampling device for preventing the escape of sulfides. Background Technology

[0002] The sulfide content in geothermal water is an important indicator for assessing water quality. The accumulation of sulfides may lead to the imbalance of aquatic ecosystems, release highly toxic hydrogen sulfide, cause black and smelly water, and a sharp drop in dissolved oxygen, thereby affecting benthic biodiversity and fish survival. By regularly monitoring sulfide concentrations, pollution sources can be accurately located and the risk of water bodies collapsing their self-purification capacity can be warned.

[0003] The current sampling method involves using a geothermal pump to extract geothermal water and inject it into a sample preservation bottle. During the sampling process, the sample is directly exposed to the air, which can easily allow outside air to enter, causing sulfur ions in the water to oxidize easily and hydrogen sulfide to escape from the water, thus affecting the test results. Based on this, we hope to design a sampler that is tightly sealed, prevents contact with air during the entire sampling process, and can be fixed in time. Summary of the Invention

[0004] To overcome the problem that when samples are directly exposed to air during the sampling process, outside air can easily enter, causing sulfur ions in the water to be easily oxidized and hydrogen sulfide to escape from the water, thus affecting the test results.

[0005] The technical solution of this utility model is as follows: a sampling device for preventing the escape of sulfides, including a polytetrafluoroethylene connector and a collection bottle, as well as a delivery hose and a threaded cap. The collection bottle is provided on one side of the polytetrafluoroethylene connector, and a delivery hose is provided between the polytetrafluoroethylene connector and the collection bottle. A quick connector for connecting the delivery hose is fixedly connected to the upper end of the threaded cap. A piston is slidably connected inside the quick connector. Vent holes are distributed in an annular pattern on the surface of the threaded cap, and a plug is provided at the vent hole at the upper end of the threaded cap.

[0006] Preferably, the lower end of the PTFE connector is provided with a sealing ring groove, and an annular sealing ring is provided in the sealing ring groove. The surface of the sealing ring groove is provided with a notch, and the surface of the annular sealing ring is provided with a pull strip that matches the notch. The upper end of the PTFE connector is a stepped neck.

[0007] Preferably, the upper end of the collection bottle is provided with a threaded connector, the threaded cap is threadedly connected to the threaded connector, the surface of the threaded cap is provided with anti-slip texture, and the lower end of the quick connector is provided with a silicone tube, which is located at the bottom of the collection bottle.

[0008] Preferably, an annular magnet is fixedly connected to the vent hole on the surface of the threaded cap, and a sliding rod is fixedly connected to the lower end of the plug. The sliding rod is slidably connected to the threaded cap. The annular magnet is used to attract the plug, and an annular sealing ring is fixedly connected to the lower end of the plug.

[0009] Preferably, a piston is slidably connected inside the quick connector. The piston is hollow in the middle, closed at the bottom, and has openings on both sides. A retaining ring is fixedly connected to the lower end of the quick connector. A spring is fitted on the surface of the piston. The spring is used to push the piston back, and the sample flows into the collection bottle through the openings on both sides of the piston.

[0010] Preferably, the bottom of the collection bottle is rotatably connected to a rotating seat, the lower end of the rotating seat is provided with a sealing gasket, the lower end of the rotating seat is fixedly connected with a non-slip handle, and the upper end of the rotating seat is provided with multiple rotating plates in a ring, with openings evenly distributed on the surface of the rotating plates.

[0011] Preferably, a rubber strip is fixedly connected to the end of the rotating plate, the rubber strip is in contact with the inner wall surface of the collection bottle, and a water outlet is provided on one side of the collection bottle, with a rubber plug for sealing one end of the water outlet.

[0012] The beneficial effects of this utility model are:

[0013] 1. When using this anti-escape sulfide sampling device, the sample enters directly into the collection bottle through the silicone tube and extends below the surface of the fixative liquid, thereby ensuring that the sample is never in contact with air, ensuring that the sample is not affected by the external environment, and has good sealing performance. After the collection bottle is removed, the inlet of the collection bottle is sealed at the same time, thus achieving a self-locking effect and preventing the entry of external air from affecting subsequent detection.

[0014] 2. Before testing, rotate the non-slip handle. The rotating plate will stir the sample during rotation, thus ensuring that the test results of each batch of samples are less different when testing in batches. The rubber strip at the end of the rotating plate will clean the impurities on the inner wall of the collection bottle, thus facilitating the cleaning of the inner wall of the collection bottle. Attached Figure Description

[0015] Figure 1 shows a schematic diagram of one embodiment of the sampling device for preventing the escape of sulfides according to this utility model;

[0016] Figure 2 shows a three-dimensional structural diagram of the annular sealing ring of this utility model;

[0017] Figure 3 shows a three-dimensional structural diagram of the rotating plate of this utility model;

[0018] Figure 4 shows a three-dimensional structural diagram of the silicone tube of this utility model;

[0019] Figure 5 shows a three-dimensional structural diagram of the piston of this utility model;

[0020] Figure 6 shows a three-dimensional structural diagram of the threaded cap of this utility model;

[0021] Figure 7 shows a three-dimensional structural diagram of the plug of this utility model;

[0022] Figure 8 shows a three-dimensional structural diagram of the anti-slip handle of this utility model.

[0023] Explanation of reference numerals in the attached diagram: 1. PTFE connector; 2. Collection bottle; 3. Delivery hose; 4. Sealing ring groove; 5. Notch; 6. Annular sealing ring one; 7. Pull strip; 8. Outlet; 9. Rubber stopper; 10. Threaded connector; 11. Rotating seat; 12. Rotating plate; 13. Rubber strip; 14. Anti-slip handle; 15. Threaded cap; 16. Quick connector; 17. Silicone tube; 18. Plug; 19. Slide rod; 20. Annular sealing ring two; 21. Annular magnet; 22. Piston; 23. Spring; 24. Buckle. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] Please refer to Figures 1-8. This utility model provides an embodiment of an anti-escape sulfide sampling device, which includes a polytetrafluoroethylene (PTFE) connector 1 and a collection bottle 2, as well as a delivery hose 3 and a threaded cap 15. The collection bottle 2 is located on one side of the PTFE connector 1, and the delivery hose 3 is located between the PTFE connector 1 and the collection bottle 2. A quick connector 16 for connecting the delivery hose 3 is fixedly connected to the upper end of the threaded cap 15. A piston 22 is slidably connected inside the quick connector 16. Vent holes are distributed in an annular pattern on the surface of the threaded cap 15, and a plug 18 is provided at the vent hole at the upper end of the threaded cap 15. When this anti-escape sulfide sampling device is in use, the sample enters directly into the collection bottle 2 through the silicone tube 17 and extends below the surface of the fixative liquid, thereby ensuring that the sample is never in contact with air, ensuring that the sample is not affected by the external environment, and having good sealing performance. After the collection bottle 2 is removed, the inlet of the collection bottle 2 is sealed at the same time, thereby achieving a self-locking effect and preventing the entry of external air from affecting subsequent detection.

[0026] Please refer to Figures 2, 4, and 5. In this embodiment, the lower end of the PTFE connector 1 is provided with a sealing ring groove 4, and an annular sealing ring 6 is provided inside the sealing ring groove 4. The surface of the sealing ring groove 4 is provided with a notch 5, and the surface of the annular sealing ring 6 is provided with a pull strip 7, which is adapted to the notch 5. The upper end of the PTFE connector 1 is a stepped neck. The upper end of the collection bottle 2 is provided with a threaded connector 10, and a threaded cap 15 is threadedly connected to the threaded connector 10. The surface of the threaded cap 15 is provided with anti-slip texture. The lower end of the quick connector 16 is provided with a silicone tube 17, which is located at the bottom of the collection bottle 2. A ring magnet 21 is fixedly connected to the vent hole on the surface of cap 15. A slide rod 19 is fixedly connected to the lower end of cap 18, and slide rod 19 is slidably connected to cap 15. The ring magnet 21 is used to attract cap 18. A ring sealing ring 20 is fixedly connected to the lower end of cap 18. A piston 22 is slidably connected inside quick connector 16. The piston 22 is hollow in the middle, closed at the bottom, and has openings on both sides. A retaining ring 24 is fixedly connected to the lower end of quick connector 16. A spring 23 is fitted on the surface of piston 22. The spring 23 is used to push piston 22 back. The sample flows into collection bottle 2 through the openings on both sides of piston 22. During use, due to... The silicone tube 17 is located at the bottom of the collection bottle 2. The sample enters the collection bottle 2 directly through the silicone tube 17 and extends below the surface of the fixative liquid, ensuring that the sample is never exposed to air and is not affected by external factors. The PTFE connector 1 is designed with a stepped neck, eliminating air bubbles throughout the sample collection process. The vent on the surface of the threaded cap 15 is used to expel excess gas from the collection bottle 2. When the gas pressure in the collection bottle 2 is too high, the cap 18 is pushed up, and the gas is released. After the gas is released, the cap 18 re-blocks the vent under the attraction of the ring magnet 21, thus preventing outside air from entering. When dust or other contaminants enter the collection bottle 2, and the annular sealing ring 6 becomes worn and needs replacement, place your finger at the notch 5 and pull the pull bar 7 outwards. This will pry the annular sealing ring 6 out of the sealing ring slot 4 without the need for tools, thus facilitating quick replacement of the annular sealing ring 6. When the collection bottle 2 needs to be removed, simply remove it from the quick connector 16. Under the push of the spring 23, the piston 22 moves upwards, and the openings on both sides of the piston 22 are blocked by the inner wall of the quick connector 16, thus sealing the collection bottle 2 and preventing outside air from entering and affecting subsequent testing.

[0027] Please refer to Figures 3 and 8. In this embodiment, a rotating seat 11 is rotatably connected to the bottom of the collection bottle 2. A sealing gasket is provided at the lower end of the rotating seat 11, and an anti-slip handle 14 is fixedly connected to the lower end of the rotating seat 11. Multiple rotating plates 12 are distributed in a ring at the upper end of the rotating seat 11. Openings are evenly distributed on the surface of the rotating plates 12. A rubber strip 13 is fixedly connected to the end of the rotating plate 12. The rubber strip 13 contacts the inner wall surface of the collection bottle 2. A water outlet 8 is provided on one side of the collection bottle 2. A rubber stopper 9 for sealing is provided at one end of the water outlet 8. Before testing, the anti-slip handle 14 is rotated, and the rotating plate 12 stirs the sample during rotation, thereby ensuring that the test results of each batch of samples are less different when testing in batches. There will be a small amount of impurities in the sample. These impurities will be adsorbed on the inner wall of the collection bottle 2 and are not easy to clean. When cleaning is required, the anti-slip handle 14 is rotated, and the rubber strip 13 at the end of the rotating plate 12 cleans the impurities on the inner wall of the collection bottle 2. Then the rubber stopper 9 is removed, and the impurities are discharged from the water outlet 8 with the water flow.

[0028] In use, the PTFE connector 1 is used to connect to the outlet of the geothermal pump. After the geothermal pump extracts the geothermal water, it is transported to the collection bottle 2 through the delivery hose 3. Since the silicone tube 17 is located at the bottom of the collection bottle 2, the sample enters the collection bottle 2 directly through the silicone tube 17 and goes deep below the surface of the fixative liquid, thereby ensuring that the sample is never in contact with air and that the sample is not affected by the outside world.

[0029] Because the PTFE connector 1 necked too quickly, it caused severe air bubbles in the pipeline. The PTFE connector 1 was designed with a stepped necking, which eliminated the air bubble problem throughout the sample collection process.

[0030] The vent on the surface of the threaded cap 15 is used to discharge excess gas in the collection bottle 2. When the gas pressure in the collection bottle 2 is too high, the plug 18 is pushed up and the gas is discharged. After the gas is discharged, the plug 18 re-blocks the vent under the attraction of the annular magnet 21, thereby preventing outside air and dust from entering the collection bottle 2. The annular sealing ring 20 at the lower end of the plug 18 is used to ensure the airtightness.

[0031] The PTFE connector 1 has an annular sealing ring 6 inside to ensure a tight connection with the geothermal pump. When the annular sealing ring 6 is worn and needs to be replaced, place your finger at the notch 5 and pull the pull bar 7 outward to pry the annular sealing ring 6 out of the sealing ring slot 4. No tools are needed to pick out the annular sealing ring 6, which facilitates the quick replacement of the annular sealing ring 6.

[0032] When the collection bottle 2 needs to be removed, it can be directly removed from the quick connector 16. After losing the support of the end of the delivery hose 3, the piston 22 moves upward under the push of the spring 23. The openings on both sides of the piston 22 are blocked by the inner wall of the quick connector 16, thus sealing the collection bottle 2 and preventing outside air from entering and affecting subsequent testing. When the collection bottle 2 needs to be used again, the delivery hose 3 is inserted into the quick connector 16 to push the piston 22 downward, and the sample can flow into the collection bottle 2 from the openings on both sides of the piston 22. The retaining ring 24 is used to provide support for the spring 23 and to prevent the piston 22 from disengaging from the quick connector 16.

[0033] Before testing, rotate the anti-slip handle 14, which drives the rotating seat 11 to rotate. The rotating plate 12 on the upper end of the rotating seat 11 stirs the sample during the rotation, thereby ensuring that the test results of each batch of samples are less different when testing in batches.

[0034] There will be a small amount of impurities in the sample. These impurities will adhere to the inner wall of the collection bottle 2 and are not easy to clean. When cleaning is needed, turn the anti-slip handle 14. The rubber strip 13 at the end of the rotating plate 12 will clean the impurities on the inner wall of the collection bottle 2. Then remove the rubber stopper 9, and the impurities will be discharged from the outlet 8 with the water flow.

[0035] Through the above steps, when using this anti-escape sulfide sampling device, the sample enters directly into the collection bottle 2 through the silicone tube 17 and extends below the surface of the fixative liquid, thereby ensuring that the sample is never in contact with air, ensuring that the sample is not affected by the outside world, and having good sealing performance. After the collection bottle 2 is removed, the inlet of the collection bottle 2 is sealed at the same time, thereby achieving a self-locking effect and preventing outside air from entering and affecting subsequent detection.

Claims

1. Escape-proof sulfide sampling device comprising a polytetrafluoroethylene connector (1) and a collection bottle (2); characterized in that: It also includes a delivery hose (3) and a threaded cap (15). A collection bottle (2) is provided on one side of the PTFE connector (1). A delivery hose (3) is provided between the PTFE connector (1) and the collection bottle (2). A quick connector (16) for connecting the delivery hose (3) is fixedly connected to the upper end of the threaded cap (15). A piston (22) is slidably connected inside the quick connector (16). Vent holes are distributed in an annular pattern on the surface of the threaded cap (15). A plug is provided at the vent hole at the upper end of the threaded cap (15).

2. The sampling device for preventing the escape of sulfides according to claim 1, characterized in that: The lower end of the polytetrafluoroethylene connector (1) is provided with a sealing ring groove (4), and an annular sealing ring (6) is provided in the sealing ring groove (4). The surface of the sealing ring groove (4) is provided with a notch (5), and the surface of the annular sealing ring (6) is provided with a pull strip (7). The pull strip (7) is adapted to the notch (5). The upper end of the polytetrafluoroethylene connector (1) is a stepped neck.

3. The escape-proof sulfide sampling device of claim 2, wherein: The upper end of the collection bottle (2) is provided with a threaded connector (10), and the threaded cap (15) is threadedly connected to the threaded connector (10). The surface of the threaded cap (15) is provided with anti-slip texture. The lower end of the quick connector (16) is provided with a silicone tube (17), which is located at the bottom of the collection bottle (2).

4. The sampling device for preventing the escape of sulfides according to claim 3, characterized in that: A ring magnet (21) is fixedly connected to the vent hole on the surface of the threaded cap (15), and a slide rod (19) is fixedly connected to the lower end of the plug (18). The slide rod (19) is slidably connected to the threaded cap (15). The ring magnet (21) is used to attract the plug (18). A ring sealing ring II (20) is fixedly connected to the lower end of the plug (18).

5. The escape-proof sulfide sampling device of claim 4, wherein: A piston (22) is slidably connected inside the quick connector (16). The piston (22) is hollow in the middle, closed at the bottom, and has openings on both sides. A retaining ring (24) is fixedly connected to the lower end of the quick connector (16). A spring (23) is fitted on the surface of the piston (22). The spring (23) is used to push the piston (22) back. The sample flows into the collection bottle (2) through the openings on both sides of the piston (22).

6. The escape-proof sulfide sampling device of claim 5, wherein: The bottom of the collection bottle (2) is rotatably connected to a rotating seat (11). The lower end of the rotating seat (11) is provided with a sealing gasket. The lower end of the rotating seat (11) is fixedly connected to an anti-slip handle (14). Multiple rotating plates (12) are distributed in a ring at the upper end of the rotating seat (11). Openings are evenly distributed on the surface of the rotating plates (12).

7. The escape-proof sulfide sampling device of claim 6, wherein: A rubber strip (13) is fixedly connected to the end of the rotating plate (12). The rubber strip (13) contacts the inner wall surface of the collection bottle (2). An outlet (8) is provided on one side of the collection bottle (2). A rubber plug (9) for sealing is provided at one end of the outlet (8).

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