Handheld water sampler for underground drinking water sampling

Abstract

This utility model discloses a handheld water quality sampler for underground drinking water sampling, relating to the field of underground drinking water sampling technology. It includes a sampling tube, a sampling hole, a sample storage tube, a switching mechanism, and a cleaning mechanism. The sampling hole is located on one side of the top of the sampling tube. The handheld water quality sampler disclosed in this utility model, through the switching mechanism, prevents water flow from entering the sample storage tube through the sampling hole when the water quality sampler is not in use, thus sealing the sampling hole and forming physical isolation. During water sample collection, a filter screen filters the water flow, preventing fixed impurities smaller than the sampling hole from entering the sample storage tube and contaminating the sample, thereby reducing errors in subsequent laboratory analysis. Furthermore, the cleaning mechanism pushes out impurities causing blockage when the sampling hole is blocked by similarly sized impurities, thus preventing blockage from affecting the sampling of underground drinking water.

Description

Technical Field

[0001] This utility model relates to the field of underground drinking water sampling technology, specifically a handheld water sampler for underground drinking water sampling. Background Technology

[0002] Groundwater sampling is a highly specialized and meticulous process aimed at obtaining representative, uncontaminated water samples for water quality analysis and assessment to ensure drinking water safety. Using handheld water samplers is a feasible and common practice, particularly suitable for shallow groundwater monitoring wells, drinking water wells, or springs. These devices are typically small, lightweight, and easy to operate, making them ideal for fieldwork.

[0003] Application No. 202021277768.0 discloses a sampler for water environment testing in fine chemical industries. This patent includes a sample storage cylinder with an open top and closed bottom. A support plate is provided on the outer side of the top of the sample storage cylinder. A connecting rod is provided inside the sample storage cylinder, with a handle at the top. A limiting rod penetrating the support plate is provided at the bottom of one end of the handle, and a spring is sleeved on the limiting rod, located between the handle and the support plate. A cap is provided at the bottom of the connecting rod penetrating the bottom of the sample storage cylinder. The inner wall of the cap slides against the outer wall of the sample storage cylinder. Multiple water inlet holes are provided on the outer wall of the bottom of the sample storage cylinder. The advantages of this utility model are: it prevents large impurities in the water source from being sucked into the sampler during sampling, facilitates cleaning of the sampler, and allows for convenient one-handed operation of the sampler, ensuring the stability of the operator's center of gravity and preventing the operator from falling into the water source.

[0004] While the above comparison documents can prevent larger impurities from the water source from being sucked into the sampler during sampling, impurities smaller than the inlet hole can still enter the sampler. Furthermore, when impurities of similar size to the inlet hole come into contact with it, they can easily get stuck, causing blockage and affecting the use of the water sampler. Utility Model Content

[0005] The purpose of this invention is to provide a handheld water sampler for underground drinking water sampling, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a handheld water sampler for underground drinking water sampling, comprising a sampling tube, a sampling hole, a sample storage tube, a switching mechanism, and a cleaning mechanism. The sampling tube has a sampling hole on one side of its top, and a sample storage tube is connected to the bottom of its outer wall. A water outlet pipe is connected to one side of the outer wall of the sample storage tube. The switching mechanism includes a base rotatably connected to the bottom of the sample storage tube. The top of the base is disc-shaped and has an overall "T"-shaped structure. A rotating column is connected to the middle of the top of the base, and a turntable is welded to the top of the outer wall of the rotating column. Sealing plates are connected to both sides of the top of the base, and filter screens are connected to the outer walls of the sealing plates. Limiting plates are fixedly connected to both sides of the top of the filter screens. A flow channel for water flow is provided inside the base.

[0007] By setting the base to drive the sealing plate, filter plate and cleaning mechanism to rotate together, they can be brought close to the sampling hole respectively.

[0008] Preferably, both the sealing plate and the filter screen are arc-shaped, and the top of the sealing plate has a limiting groove corresponding to the limiting insert plate, so that the replacement operation can be completed simply by moving the filter screen plate longitudinally.

[0009] By setting a limiting plate, people only need to move the filter screen plate upwards so that the limiting plate moves out of the sealing plate, and then the filter screen plate can be removed for replacement.

[0010] Preferably, the outer wall of the top of the sampling tube is threadedly connected to a support block with a threaded pin, and the outer side of the turntable has a threaded hole corresponding to the threaded pin, and the threaded holes are distributed at equal angles.

[0011] By setting a threaded pin on the outside of the turntable, the rotating column is limited to prevent it from rotating arbitrarily.

[0012] Preferably, the cleaning mechanism includes a rotating rod connected to the rotating column, the top of the rotating column has an internal movable cavity corresponding to the rotating rod, and a spring is fixedly connected to the bottom of the movable cavity, and the top of the spring is connected to the bottom of the rotating rod.

[0013] The spring force generated by the spring reset helps the rotating rod return to its original position.

[0014] Preferably, a transmission seat is fixedly connected to one side of the bottom end of the rotating rod, and the transmission seat is "L" shaped. A rotating plate is rotatably connected to the bottom end of the transmission seat, and a sliding seat is rotatably connected to the bottom end of the rotating plate.

[0015] The slide moves horizontally in a straight line by rotating the plate.

[0016] Preferably, the outer wall of the slide is connected to a push pin in the middle, and the volume of the push pin is smaller than that of the sampling hole, so that it can extend into the sampling hole.

[0017] By inserting the ejector pin into the sampling hole, impurities that are causing blockages in the sampling hole are ejected.

[0018] Preferably, the slide is arc-shaped, and a limiting block is fixedly connected to the bottom end of the slide. The outer wall of the slide is connected to the top of the base through a sliding groove.

[0019] The slide block is guided to move linearly by a groove on the top of the base.

[0020] As can be seen from the above, the handheld water sampler for underground drinking water sampling provided by this utility model has the following beneficial effects.

[0021] 1. By setting a switching mechanism, when the water sampler is not in use, the water flow cannot enter the sample storage cylinder through the sampling hole, thus sealing the sampling hole when not sampling, forming a physical isolation. When collecting water samples, the water flow is filtered through a filter screen to prevent fixed impurities smaller than the sampling hole from entering the sample storage cylinder and contaminating the sample, thereby reducing errors in subsequent laboratory analysis.

[0022] 2. By setting up a cleaning mechanism, when the sampling hole is blocked by impurities of similar size, the impurities causing the blockage will be pushed out, thereby preventing the blockage from affecting the sampling of groundwater drinking water. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the three-dimensional cross-sectional structure of this utility model; Figure 3 This is a three-dimensional structural diagram of the sealing plate of this utility model; Figure 4 This is a three-dimensional structural diagram of the filter screen plate of this utility model rotating to the sampling hole; Figure 5 This is a three-dimensional structural diagram of the filter screen of this utility model; Figure 6 This is a three-dimensional structural diagram of the base of this utility model; Figure 7 This is a three-dimensional structural diagram of the cleaning mechanism of this utility model; Figure 8 This is a schematic diagram of the three-dimensional cross-sectional structure of the turntable of this utility model.

[0024] In the diagram: 1. Sampling cylinder; 2. Sampling hole; 3. Sample storage cylinder; 4. Switching mechanism; 401. Base; 402. Rotating column; 403. Turntable; 404. Sealing plate; 405. Filter screen; 406. Limiting plate; 407. Threaded pin; 5. Cleaning mechanism; 501. Rotating rod; 502. Spring; 503. Transmission seat; 504. Rotating plate; 505. Slide seat; 506. Ejector pin. Detailed Implementation

[0025] 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.

[0026] Please see Figures 1-8 This utility model provides a technical solution: a handheld water sampler for underground drinking water sampling, including a sampling tube 1, a sampling hole 2, a sample storage tube 3, a switching mechanism 4, and a cleaning mechanism 5. The sampling tube 1 has a sampling hole 2 on one side of its top end, and the sample storage tube 3 is connected to the bottom of the outer wall of the sampling tube 1. A water outlet pipe is connected to one side of the outer wall of the sample storage tube 3. The switching mechanism 4 includes a base 401 rotatably connected to the bottom end of the sample storage tube 3. The top of the base 401 is disc-shaped and has an overall "T"-shaped structure. A rotating column 402 is connected to the middle of the top of the base 401, and a turntable 403 is welded to the top of the outer wall of the rotating column 402. Sealing plates 404 are connected to both ends, and filter screen plates 405 are connected to the outer wall of the sealing plates 404. Limiting insert plates 406 are fixedly connected to both sides of the top of the filter screen plates 405. A guide groove for water flow is opened inside the base 401. Both the sealing plates 404 and the filter screen plates 405 are arc-shaped, and the top of the sealing plates 404 has a limiting groove corresponding to the limiting insert plates 406. Thus, the replacement operation can be completed by simply moving the filter screen plates 405 longitudinally. The outer wall of the top of the sampling tube 1 is threadedly connected to the support block with a threaded pin 407. The outer side of the turntable 403 has a threaded hole corresponding to the threaded pin 407, and the threaded holes are distributed at equal angles.

[0027] For specific implementation, please refer to Figure 1 and Figure 2 The staff first held the sampling tube 1 close to the groundwater, then lowered the sampling tube 1 so that the sampling hole 2 entered the water. At this time, the water flow was collected through the sampling hole 2, and the water flow entered the storage tube 3, thus completing the water sample collection of the groundwater.

[0028] See Figures 3-6When water enters the sampling hole 2, the sealing plate 404 approaches the side of the sampling hole 2, thereby blocking the sampling hole 2 to prevent water from entering. When water needs to flow through the sampling hole 2, first rotate the threaded pin 407 to disengage from the turntable 403, then release the limit on the turntable 403. After that, manually rotate the turntable 403 to drive the rotating column 402 to rotate. Since the bottom end of the rotating column 402 is connected to the base 401, the rotation of the rotating column 402 will drive the base 401 to rotate together. Since the outer side of the top of the base 401 is connected to the sealing plate 404 and the filter screen plate 405, the rotation of the base 401 will drive the sealing plate 404 and the filter screen plate 405 to rotate together. Furthermore, the rotation of the rotating column 402 will also drive the cleaning mechanism 5 to rotate together. See Figures 4-6 As the base 401 rotates, the sealing plate 404 moves away from the sampling hole 2, the filter screen plate 405 moves closer to the sampling hole 2, and then the threaded pin 407 is rotated into the turntable 403, thereby limiting the rotating column 402 to prevent it from continuing to rotate, thus removing the seal on the sampling hole 2 so that the water can pass through. At this time, the water flowing through the sampling hole 2 will pass through the filter screen plate 405, and then the water will be filtered by the filter screen plate 405 to prevent fixed impurities smaller than the sampling hole 2 from entering the sample storage cylinder 3. See Figure 5 and Figure 6 When the filter screen 405 needs to be replaced, simply move the filter screen 405 upwards so that the limiting insert 406 moves out of the sealing plate 404, and then the filter screen 405 can be removed for replacement.

[0029] By setting the switching mechanism 4, when the water sampler is not in use, the water flow cannot enter the sample storage cylinder 3 through the sampling hole 2, thereby sealing the sampling hole 2 when not sampling, forming a physical isolation. When water samples are collected, the water flow is filtered by the filter screen 405 to prevent fixed impurities smaller than the sampling hole 2 from entering the sample storage cylinder 3 and contaminating the sample, thereby reducing the error of subsequent laboratory analysis.

[0030] See Figure 2 , Figure 3 , Figure 6 and Figure 7 A transmission seat 503 is fixedly connected to one side of the bottom end of the rotating rod 501. The transmission seat 503 is L-shaped. A rotating plate 504 is rotatably connected to the bottom end of the transmission seat 503. A slide 505 is rotatably connected to the bottom end of the rotating plate 504. An ejector pin 506 is connected to the middle of the outer wall of the slide 505. The ejector pin 506 is smaller than the sampling hole 2 and can extend into the sampling hole 2. The slide 505 is arc-shaped. A limit block is fixedly connected to the bottom end of the slide 505. The outer wall of the slide 505 is connected to the top of the base 401 through a sliding groove.

[0031] For specific implementation, please refer to Figure 6 and Figure 7When an impurity of similar size to the sampling hole 2 blocks the sampling hole 2, the base 401 is rotated so that the slide 505 moves to the side of the sampling hole 2, so that the ejector pin 506 coincides with the center line of the sampling hole 2.

[0032] Next, manually press down on the rotating rod 501, causing the rotating rod 501 to drive the transmission seat 503 to move downward along the rotating column 402. The downward movement of the rotating rod 501 will compress the spring 502, causing it to deform. Then, the spring force generated by the spring 502 returning to its original position will drive the rotating rod 501 to return to its original position. Since the bottom end of the transmission seat 503 is rotatably connected to the rotating rod 501, the movement of the transmission seat 503 will cause the rotating rod 501 to rotate. At this time, the angle between the transmission seat 503 and the rotating plate 504 will change, which will generate a pushing force on the slide 505. This will cause the slide 505 to drive the ejector pin 506 to move towards the sampling hole 2 until the ejector pin 506 moves into the sampling hole 2, pushing out the impurities that are blocking the sampling hole 2.

[0033] Subsequently, when sampling hole 2 is blocked by impurities of similar size, the cleaning mechanism 5 pushes out the impurities that caused the blockage of sampling hole 2, thereby preventing the blockage of sampling hole 2 from affecting the sampling of underground drinking water.

[0034] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A handheld water sampler for underground drinking water sampling, comprising a sampling tube (1), a sampling hole (2), a sample storage tube (3), a switching mechanism (4), and a cleaning mechanism (5), wherein a sampling hole (2) is provided on one side of the top of the sampling tube (1), and a sample storage tube (3) is connected to the bottom of the outer wall of the sampling tube (1), and a water outlet pipe is connected to one side of the outer wall of the sample storage tube (3), characterized in that: The switching mechanism (4) includes a base (401) that is rotatably connected to the bottom of the sample storage cylinder (3), and the top of the base (401) is in the shape of a disc and has an overall "T" structure. A rotating column (402) is connected to the middle of the top of the base (401), and a turntable (403) is welded to the top of the outer wall of the rotating column (402). Sealing plates (404) are connected to both sides of the top of the base (401), and a filter screen plate (405) is connected to the outer wall of the sealing plate (404). Limiting insert plates (406) are fixedly connected to both sides of the top of the filter screen plate (405). A guide groove for water to flow through is opened inside the base (401).

2. The handheld water sampler for underground drinking water sampling according to claim 1, characterized in that: Both the sealing plate (404) and the filter screen plate (405) are arc-shaped, and the top of the sealing plate (404) has a limiting groove corresponding to the limiting insert plate (406), so the replacement operation can be completed simply by moving the filter screen plate (405) longitudinally.

3. The handheld water sampler for underground drinking water sampling according to claim 2, characterized in that: The outer wall of the top of the sampling tube (1) is threaded with a threaded pin (407) through a support block. The turntable (403) has a threaded hole corresponding to the threaded pin (407) on its outer side, and the threaded holes are distributed at equal angles.

4. The handheld water sampler for underground drinking water sampling according to claim 1, characterized in that: The cleaning mechanism (5) includes a rotating rod (501) connected to the rotating column (402). The top of the rotating column (402) has an active cavity corresponding to the rotating rod (501), and a spring (502) is fixedly connected to the bottom of the active cavity. The top of the spring (502) is connected to the bottom of the rotating rod (501).

5. The handheld water sampler for underground drinking water sampling according to claim 4, characterized in that: A transmission seat (503) is fixedly connected to one side of the bottom end of the rotating rod (501), and the transmission seat (503) is "L" shaped. A rotating plate (504) is rotatably connected to the bottom end of the transmission seat (503), and a slide (505) is rotatably connected to the bottom end of the rotating plate (504).

6. The handheld water sampler for underground drinking water sampling according to claim 5, characterized in that: The slide (505) has an ejector pin (506) connected to the middle of its outer wall, and the ejector pin (506) is smaller in volume than the sampling hole (2), and can extend into the sampling hole (2).

7. The handheld water sampler for underground drinking water sampling according to claim 6, characterized in that: The slide (505) is arc-shaped, and a limiting block is fixedly connected to the bottom of the slide (505). The outer wall of the slide (505) is connected to the top of the base (401) through a sliding groove.

Images