Portable river water sampler

Abstract

This utility model relates to the field of water quality sampling technology, and in particular to a portable river water sampler, comprising a first water pipe, a second water pipe, a pull rod, a limiting ring, a connecting frame, a piston ring, a rubber ring, a cover plate, and a torsion spring. The second water pipe is slidably connected to the rear periphery of the first water pipe, and the pull rod is slidably connected inside the first water pipe. A limiting ring is fixedly connected to the rear side of the pull rod, and a connecting frame is fixedly connected to the rear end of the pull rod. A piston ring is connected to the rear side of the connecting frame, and a rubber ring is provided around the rear periphery of the piston ring. A cover plate is provided at the front side of the piston ring, with one end of the cover plate rotatably connected to one end of the piston ring. A torsion spring is provided at the rotatable connection between the cover plate and the piston ring. By setting up the first and second water pipes, the second water pipe can slide on the first water pipe, thereby adjusting the length of the entire sampler to accommodate sampling at various water depths. Simultaneously, under the action of the pull rod, negative pressure automatic water absorption can be achieved, improving sampling efficiency and ensuring unidirectional water flow.

Description

Technical Field

[0001] This utility model relates to the field of water quality sampling technology, and in particular to a portable river water sampler. Background Technology

[0002] In the fields of environmental monitoring and water quality analysis, accurate and timely sampling of natural water bodies is a fundamental step in obtaining water quality data. Due to the characteristics of river water bodies, such as high fluidity, wide spatial distribution, and complex on-site conditions, traditional fixed or large sampling equipment is insufficient for practical applications. Therefore, portable river water samplers have emerged and are widely used in environmental protection departments, research institutions, and water quality testing units. These devices typically possess advantages such as lightweight structure, ease of operation, and strong adaptability, enabling rapid water sample collection under varying depths and flow velocities.

[0003] However, portable river water samplers currently on the market still have several shortcomings in practical use. For example, some devices have poor sampling adaptability under different water depth conditions, making it difficult to accurately collect samples from the target water layer; at the same time, the sampling process relies on manual operation and lacks effective sealing and control structures, which can easily cause water backflow or cross-contamination, affecting the accuracy and representativeness of the samples.

[0004] Therefore, a portable river water sampler needs to be designed to solve the above-mentioned technical problems. Utility Model Content

[0005] To overcome the shortcomings of some devices that rely on manual operation during the sampling process, lack effective sealing and control structures, and are prone to water backflow or cross-contamination, affecting the accuracy and representativeness of the samples, this utility model provides a portable river water sampler.

[0006] The technical implementation scheme of this utility model is as follows: A portable river water sampler includes a water pipe I, a sealing ring, a water pipe II, a pull rod, a limiting ring, a connecting frame, a piston ring, a rubber ring, a cover plate, a torsion spring, a water inlet ring, a water outlet pipe, a valve, and a vertical handle. A sealing ring is provided inside the rear side of water pipe I. Water pipe II is slidably connected to the outer rear side of water pipe I. A pull rod is slidably connected inside water pipe I. A limiting ring is fixedly connected to the rear side of the pull rod. A connecting frame is fixedly connected to the rear end of the pull rod. A piston ring is connected to the rear side of the connecting frame. A rubber ring is provided around the rear outer side of the piston ring. A cover plate is connected to the front side of the piston ring. One end of the cover plate is rotatably connected to one end of the piston ring. A torsion spring is provided at the rotatable connection between the cover plate and the piston ring. The diameter of the cover plate is larger than the inner diameter of the piston ring. A water inlet ring is fixedly connected to the interior of the rear side of the second water pipe. A cover plate is also rotatably connected to the front side of the water inlet ring. A torsion spring is provided at the rotatable connection between the two. The diameter of the cover plate is larger than the inner diameter of the water inlet ring. A water outlet pipe is connected and connected to the bottom of the front side of the first water pipe. A valve is provided at the bottom of the water outlet pipe. A vertical handle is fixedly connected to the lower part of the front side of the first water pipe, located in front of the water outlet pipe.

[0007] As a further preferred option, it also includes a test tube and two baffles. The test tube is threaded to the bottom of the water outlet pipe, and the baffles are rotatably connected to the front and rear sides of the upper part of the test tube. When the two baffles are closed, they can block the mouth of the test tube. One end of each baffle extends out of the test tube to form a handhold.

[0008] As a further preferred embodiment, it also includes a screw rod one, a rubber block, a sliding sleeve, and a screw rod two. A sliding groove is provided on the outer side of the water pipe one, and the water pipe two is slidably connected to the water pipe one through the sliding groove. The screw rod one is threadedly connected to the front side of the water pipe two. A rubber block is provided at the water outlet on the front side of the water pipe one. A pull rod passes through the middle of the rubber block, and a sliding sleeve is slidably connected to the pull rod on the front side of the rubber block. The screw rod one is threadedly connected to the upper and lower sides of the sliding sleeve.

[0009] As a further preferred option, a filter screen is also included, with a filter screen installed inside the rear end of the water pipe.

[0010] As a further preferred embodiment, it also includes a mounting bracket and a protrusion. The mounting bracket is fixedly connected to the front periphery of the water pipe. The mounting bracket has a limiting hole for placing the test tube. The lower part of the test tube has a protrusion, and the upper part of the limiting hole has a groove that matches the protrusion.

[0011] As a further preferred option, a test strip box is also included, which is installed on the front side of the water pipe at a position between the mounting bracket and the rubber block.

[0012] The beneficial effects of this utility model are as follows: 1. By setting up water pipe one and water pipe two, water pipe two can slide on water pipe one, thereby adjusting the length of the entire sampler to adapt to sampling at various water depths. At the same time, the linkage structure of piston ring, rubber ring, cover plate and torsion spring is set up, which can realize negative pressure automatic water absorption under the action of pull rod, and the water sample will not flow back, thus improving the sampling efficiency and ensuring the unidirectional flow of water.

[0013] 2. This utility model achieves the effects of preventing impurities from interfering with the water pipe, avoiding water sample pollution, and preventing leakage by setting a filter screen at the rear end of the water pipe and connecting a detachable test tube at the bottom of the water outlet pipe, and by using a baffle to seal and protect the test tube.

[0014] 3. This utility model, through the setting of a mounting frame, a limiting hole and a protrusion limiting structure, facilitates the rapid positioning of the test tube, and, combined with the test paper box, enables the on-site use of water quality test paper, thereby improving the overall portability of the device and the convenience of on-site testing. Attached Figure Description

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

[0016] Figure 2 This is a cross-sectional structural diagram of the water pipe one, sealing ring and water pipe two components of this utility model.

[0017] Figure 3 This is a structural schematic diagram of the piston ring, rubber ring, and cover plate of this utility model.

[0018] Figure 4 This is a cross-sectional structural diagram of the components of this utility model, including the water outlet pipe, valve, and test tube.

[0019] Figure 5 This is a cross-sectional structural diagram of the screw, filter screen, and water outlet pipe components of this utility model.

[0020] Among them: 1: Water pipe one, 101: Sealing ring, 2: Water pipe two, 3: Pull rod, 31: Limiting ring, 32: Connecting frame, 4: Piston ring, 5: Rubber ring, 6: Cover plate, 7: Torsion spring, 8: Inlet ring, 9: Outlet pipe, 10: Valve, 11: Test tube, 111: Protrusion, 12: Baffle, 13: Screw one, 131: Screw two, 14: Filter screen, 15: Mounting frame, 16: Sliding sleeve, 17: Test paper box, 18: Rubber block, 19: Vertical handle. Detailed Implementation

[0021] Example: A portable river water sampler, such as Figures 1-5As shown, it includes water pipe 1, sealing ring 101, water pipe 2, pull rod 3, limit ring 31, connecting bracket 32, piston ring 4, rubber ring 5, cover plate 6, torsion spring 7, inlet ring 8, outlet pipe 9, valve 10, and vertical handle 19. For ease of understanding, the rear side in this solution refers to... Figure 2 The sealing ring 101 is located in the direction opposite to the rear side. The sealing ring 101 is located inside the rear side of water pipe 1. Water pipe 2 is slidably connected to the outer side of the rear side of water pipe 1. A pull rod 3 is slidably connected inside water pipe 1. A handle is connected to the front end of the pull rod 3, which is located outside water pipe 1. A limit ring 31 is fixedly connected to the pull rod 3. A connecting bracket 32 ​​is bolted to the rear end of the pull rod 3. A piston ring 4 is connected to the rear side of the connecting bracket 32. A rubber ring 5 is provided around the piston ring 4 to reinforce it. 4. To ensure the sealing between the piston ring 4 and the water pipe 1, and to ensure that the water can flow smoothly under negative pressure without leakage, a cover plate 6 is provided on the front side of the piston ring 4. One end of the cover plate 6 is rotatably connected to one end of the piston ring 4. A torsion spring 7 is provided at the rotatable connection between the cover plate 6 and the piston ring 4. The diameter of the cover plate 6 is larger than the inner diameter of the piston ring 4. Therefore, the cover plate 6 on the piston ring 4 can only rotate to the side away from the piston ring 4. Due to the obstruction of the cover plate 6, it cannot rotate to the side closer to the piston ring 4. Under normal conditions, the cover plate 6 seals the piston ring. An inlet ring 8 is fixedly installed inside the rear side of water pipe 2, and a cover plate 6 is also installed on the front side of the inlet ring 8. One end of the cover plate 6 is rotatably connected to one end of the inlet ring 8. A torsion spring 7 is installed at the rotatable connection between the cover plate 6 and the inlet ring 8. The diameter of the cover plate 6 is larger than the inner diameter of the inlet ring 8. Therefore, the cover plate 6 on the inlet ring 8 can only rotate towards the side away from the inlet ring 8. Due to the obstruction of the cover plate 6, it cannot rotate towards the side closer to the inlet ring 8. Under normal conditions, the cover plate 6 seals the inlet ring 8. The cover plate 6 and the torsion spring 7 are used to effectively control the water flow direction and avoid water sample backflow or cross-contamination. The bottom front side of water pipe 1 is connected to and connected to an outlet pipe 9. A valve 10 is installed at the lower part of the outlet pipe 9. A vertical handle 19 is bolted to the lower front side of water pipe 1, located in front of the outlet pipe 9.

[0022] like Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, it also includes a test tube 11, a baffle 12, a screw 13, a rubber block 18, a sliding sleeve 16, and a second screw 131. The bottom of the water outlet pipe 9 is threadedly connected to the test tube 11. The baffle 12 is rotatably connected to the front and rear sides of the upper part of the test tube 11. When the baffle 12 is closed, it can block the mouth of the test tube. One end of each baffle 12 extends to the outside of the test tube 11 to form a handhold, so that the user can easily rotate the baffle 12. A groove is provided on the outer side of water pipe 1, and water pipe 2 is slidably connected to water pipe 1 through the groove. A screw rod 13 is threaded on the front side of water pipe 2. A rubber block 18 is provided at the outlet of water pipe 1. The rubber block 18 can block the outlet of water pipe 1. A through hole is provided in the middle of the rubber block 18 for the pull rod 3 to pass through. The pull rod 3 can move in the through hole. A sliding sleeve 16 is fitted on the front side of the rubber block 18 on the pull rod 3. The upper and lower sides of the sliding sleeve 16 are threaded with screw rod 2 131. The sliding sleeve 16 can slide on the pull rod 3. The effective stroke length of the pull rod 3 can be adjusted by adjusting the position of the sliding sleeve 16. After adjustment, the position of the sliding sleeve 16 is fixed by screw rod 2 131.

[0023] like Figure 1 and Figure 5 As shown, it also includes a filter screen 14, a mounting bracket 15, a protrusion 111, and a test paper box 17. The filter screen 14 is located inside the rear end of the second water pipe 2. The mounting bracket 15 is connected to the front periphery of the first water pipe 1 by bolts. The mounting bracket 15 has a limiting hole for placing the test tube 11. The lower part of the test tube 11 has a protrusion 111. The upper part of the wall of the limiting hole has a groove that matches the protrusion 111. The test tube 11 slides into the groove of the limiting hole with the protrusion 111 aligned with it. After the protrusion 111 has completely passed through the groove, the test tube 11 is rotated to misalign the protrusion 111 with the groove of the limiting hole. Under the action of the hand-held part of the front baffle 12 and the rear protrusion 111, the test tube 11 is prevented from sliding off the mounting bracket 15 in the front-back direction during use. The test paper box 17 is installed on the front periphery of the first water pipe 1 at the position between the mounting bracket 15 and the rubber block 18.

[0024] This portable river water sampler achieves water sample collection at different depths through the coordinated operation of its components. During operation, the user holds the vertical handle 19 and inserts the inlet ring 8 into the water. Then, holding the handle, the user pulls the lever 3 outwards. Water enters from the inlet ring 8 at the rear end of the second water pipe 2, and after initial filtration of impurities by the filter screen 14, continues to flow forward. The lever 3 drives the connecting frame 32 and the piston ring 4 to slide forward synchronously. When the lever 3 is pulled until the limiting ring 31 on the lever 3 contacts the rubber block 18 on the first water pipe 1, the volume of the cavity between the cover plate 6 of the piston ring 4 and the cover plate 6 of the inlet ring 8 increases, and the pressure decreases. The external pressure is greater than the internal pressure, causing the cover plate 6 of the inlet ring 8 to rotate forward and open under the pressure, allowing the river water sample to pass through. The water sample is drawn into the chamber through the inlet ring 8. After a certain amount of water sample enters, the pressure returns to normal. At this time, the cover plate 6 resets under the action of the torsion spring 7 to prevent the water sample from flowing back. Subsequently, the pull rod 3 is pushed in the opposite direction, and the volume of the chamber between the piston ring 4 and the front side of the water pipe 1 increases, and the pressure gradually decreases. Under the action of pressure and the impact force of the water flow, the cover plate 6 of the piston ring 4 rotates and opens to the front side. The river water sample flows into the space in front of the piston ring 4 through the piston ring 4. After a certain amount of water sample enters, the pressure returns to normal. At this time, the cover plate 6 resets under the action of the torsion spring 7 and the water sample will not flow back. The valve 10 can be opened to let the river water sample flow into the test tube 11.

[0025] To meet the sampling requirements at different depths, water pipe 2 is slidably connected to water pipe 1 via a sliding groove and locked in place by screw 13, thereby adjusting the height of the inlet ring 8 on water pipe 2 for sampling from deeper water sources. To adjust the water intake, the position of the sliding sleeve 16 on the pull rod 3 can be adjusted, thereby adjusting the effective stroke of the pull rod 3. After adjustment, it is locked in place by screw 131. A sealing ring 101 is located on the rear side of water pipe 1 to enhance the sealing performance between the two pipes and ensure effective establishment of negative pressure. A filter screen 14 is used to block large particulate impurities and improve the purity of the water sample.

[0026] After water sample collection is completed, close valve 10 on the outlet pipe 9 to prevent liquid leakage. Test tube 11 is threaded to the bottom of outlet pipe 9. Rotating the baffles 12 on both sides can seal the test tube opening after water sample collection, preventing spillage or contamination during transportation. After removing test tube 11, if further sampling is not required, valve 10 can be opened to drain excess water, or an external water pipe can be connected to clean the inside of water pipe 1 and water pipe 2, ensuring that the sampling results are not contaminated for the next use. Place the test tube 11 with collected samples into the limiting hole of the mounting bracket 15. The lower part of test tube 11 has a protrusion 111 that slides into the limiting hole. Then, rotating it will cause the protrusion 111 to misalign with the groove to achieve a fixed effect. When testing is required, water quality test strips can be placed in the test strip box 17 for convenient on-site testing.

[0027] In summary, this sampler uses the pull rod 3 to drive the piston ring 4 to move and create negative pressure to achieve self-absorption of water. Combined with the cover plate 6 and torsion spring 7, it achieves automatic opening and closing to control the water flow path, effectively preventing water sample backflow. The sampling depth is adjusted by using a chute and screw structure. It features a compact structure, convenient operation, and strong adaptability.

Claims

1. A portable river water sampler characterised in that: The system includes a water pipe (1), a sealing ring (101), a water pipe (2), a pull rod (3), a limiting ring (31), a connecting frame (32), a piston ring (4), a rubber ring (5), a cover plate (6), a torsion spring (7), an inlet ring (8), an outlet pipe (9), a valve (10), and a vertical handle (19). The water pipe (1) has a sealing ring (101) inside its rear side. The water pipe (1) is slidably connected to the outer rear side of the water pipe (1). The water pipe (1) has a pull rod (3) slidably connected inside its interior. The pull rod (3) has a limiting ring (31) fixedly connected to its rear side. The pull rod (3) has a connecting frame (32) fixedly connected to its rear end. The connecting frame (32) has a piston ring (4) connected to its rear side. The piston ring (4) has a rubber ring (5) on its outer rear side. A cover plate (6) is connected to the front side of the ring (4). One end of the cover plate (6) is rotatably connected to one end of the piston ring (4). A torsion spring (7) is provided at the rotatable connection between the cover plate (6) and the piston ring (4). The diameter of the cover plate (6) is larger than the inner diameter of the piston ring (4). An inlet ring (8) is fixedly connected to the interior of the rear side of the water pipe (2). The front side of the inlet ring (8) is also rotatably connected to the cover plate (6). A torsion spring (7) is provided at the rotatable connection between the two. The diameter of the cover plate (6) is larger than the inner diameter of the inlet ring (8). A water outlet pipe (9) is connected and communicated to the bottom of the front side of the water pipe (1). A valve (10) is provided at the bottom of the water outlet pipe (9). A vertical handle (19) is fixedly connected to the lower front side of the water pipe (1) in front of the water outlet pipe (9).

2. A portable river water sampler according to claim 1, characterised in that: It also includes a test tube (11) and two baffles (12). The bottom of the water outlet pipe (9) is threaded to the test tube (11). The test tube (11) is rotatably connected to the front and rear sides of the upper part of the test tube (11). When the two baffles (12) are closed, they can block the mouth of the test tube. One end of each baffle (12) extends to the outside of the test tube (11) to form a handhold.

3. A portable river water sampler as claimed in claim 2, wherein: It also includes screw one (13), rubber block (18), sliding sleeve (16) and screw two (131). A sliding groove is provided on the outside of water pipe one (1). Water pipe two (2) is slidably connected to water pipe one (1) through the sliding groove. Screw one (13) is threaded on the front side of water pipe two (2). Rubber block (18) is provided at the water outlet on the front side of water pipe one (1). Pull rod (3) passes through the middle of rubber block (18). Sliding sleeve (16) is slidably connected on the pull rod (3) on the front side of rubber block (18). Screw two (131) is threaded on the upper and lower sides of sliding sleeve (16).

4. A portable river water sampler as claimed in claim 3, wherein: It also includes a filter screen (14), and the filter screen (14) is installed inside the rear end of the water pipe (2).

5. A portable river water sampler as claimed in claim 4 wherein: It also includes a mounting bracket (15) and a protrusion (111). The mounting bracket (15) is fixedly connected to the front periphery of the water pipe (1). The mounting bracket (15) has a limiting hole for placing the test tube (11). The lower part of the test tube (11) has a protrusion (111). The upper part of the limiting hole has a groove that matches the protrusion (111).

6. A portable river water sampler according to claim 5, wherein: It also includes a test strip box (17), which is installed on the front side of the water pipe (1) between the mounting bracket (15) and the rubber block (18).

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