A water sample collection tool
By designing a water sample collection tool with a conical head structure and a buoyancy cavity counterweight, the problem of floating impurities entering the sample was solved, enabling simple and efficient water sample collection and ensuring water sample quality and testing accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BAIHETAN BRANCH OF THREE GORGES BASE DEV CO LTD
- Filing Date
- 2025-06-18
- Publication Date
- 2026-07-17
Smart Images
Figure CN224518221U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water sampling tools, and in particular to a water sample collection tool. Background Technology
[0002] In the daily work of a laboratory, obtaining water samples accurately and conveniently is a fundamental step in conducting experiments such as water quality analysis. Existing water sampling methods have many problems. For example, when using ordinary containers to directly collect water, it is difficult to ensure the representativeness of the sample, and other impurities are easily introduced during the sampling process, affecting the accuracy of subsequent test results. Some specialized water sampling equipment has a complex structure and is inconvenient to operate. Therefore, there is an urgent need for a water sampling tool that is simple in structure, easy to operate, and can ensure the quality of the water sample.
[0003] For example, in the prior art, Chinese patent document CN201955254U discloses a water sampler, including a cylindrical barrel with an inlet at the bottom and an outlet at the top. A floating plate is located above the inlet, and a baffle is installed inside the barrel. A sample outlet is located at the bottom of the barrel. The floating plate is an inverted frustum shape, and the inlet matches the floating plate. Its advantage is that, because the floating plate is an inverted frustum shape, it is pressed into the inlet under water pressure during water sampling, sealing it tightly and preventing leakage. Through the difference between water pressure and gravity, the water pressure pushes the lower cover upwards, draining water into the sampling barrel through the open inlet, thus preventing impurities from entering the sampling barrel. Its disadvantage is that, during use, the bottom of the cylindrical barrel contacts the water surface first. Impurities at the bottom of the cylindrical barrel will accumulate at the bottom of the support ring. When the floating plate floats up, the impurities accumulated at the bottom of the support ring enter the cylindrical barrel. Utility Model Content
[0004] The purpose of this utility model is to provide a water sample collection tool that allows the conical head to float up and open the collection port after the collection port of the sampling bucket is inserted below the water surface for collection. Furthermore, because the conical head can effectively break the water, it can prevent impurities floating on the water surface from entering the sampling bucket during collection.
[0005] To achieve the above objectives, this utility model provides a water sample collection tool, including a sampling bucket with a collection port at the bottom. The lower end of the sampling bucket is a conical structure that is wider at the top and narrower at the bottom. The collection port is located at the lower end of the conical structure. A conical head adapted to the inner wall of the conical structure is movably installed inside the sampling bucket. At least one buoyancy cavity is provided inside the upper end of the conical head. A pull ring is provided at the top of the sampling bucket. When the outer wall of the conical head is in contact with the inner wall of the conical structure, the head at the lower end of the conical head extends out of the collection port by a certain length.
[0006] A counterweight is installed inside the buoyancy cavity.
[0007] The conical head has a threaded hole at the bottom of the buoyancy cavity. The counterweight is a ring structure. The threaded end of the screw passes through the central hole of the counterweight and is then connected and fixed to the threaded hole.
[0008] A sealing groove is provided on the conical wall of the conical head, and a sealing ring is installed in the sealing groove.
[0009] The top of the conical head is provided with a groove, and a cover plate is sealed and installed at the position corresponding to the groove on the top of the conical head, thereby forming the buoyancy cavity.
[0010] The top center of the conical head is provided with a guide hole, and a guide rod is installed on the inner wall of the sampling bucket through a support rod, with the guide rod passing through the guide hole.
[0011] The inner wall of the guide hole is provided with an exhaust groove, which is arranged along the axial direction of the guide hole.
[0012] A limiting sleeve is fixedly installed on the support rod, and a guide rod passes through the limiting sleeve. A limiting screw is radially screwed onto the limiting sleeve, and the limiting screw abuts against the guide rod to limit the guide rod and the limiting sleeve.
[0013] The sampling barrel has a flange on its top inner wall, and a top cover is detachably mounted on the flange via a connector. The top cover has at least one mounting hole and at least one vent hole around the mounting hole. The vent cover is connected to the mounting hole. The vent cover includes a sealing cover, a sliding rod, and a limiting member. The sliding rod is fixed to the lower side of the sealing cover and passes through the mounting hole from top to bottom. The limiting member is fixedly mounted on the lower end of the sliding rod. The vent hole is located on the lower side of the sealing cover, and an annular groove is provided on the lower side of the sealing cover at the position of the corresponding vent hole.
[0014] The sampling bucket includes an upper cylinder and a lower cylinder, with a flexible cylinder fixedly connected between the upper and lower cylinders; the lower cylinder includes a connecting ring and a sampling head fixedly connected to the lower end of the connecting ring, and the sampling head has a conical structure.
[0015] Compared with the prior art, this utility model has the following technical effects:
[0016] 1. This utility model allows the cone-shaped head to float up and open the sampling port after the sampling port of the sampling bucket is inserted below the water surface for sampling. Furthermore, because the cone-shaped head can effectively break the water, it can prevent impurities floating on the water surface from entering the sampling bucket during sampling.
[0017] 2. When the water in the sampling bucket is removed, the bottom of the conical head is brought against the bottom of the container. As the sampling bucket is lowered, there is a large gap between the conical head and the sampling port, and the water in the sampling bucket flows out into the container through this gap.
[0018] 3. This utility model can control the upward stroke of the conical head by adjusting the extension length of the lower end of the guide rod, that is, control the size of the gap between the conical head and the sampling port, so that the water enters the sampling bucket more slowly, avoiding the situation where the sample is too close to the bottom when sampling in some shallow water areas, causing the dirt at the bottom of the water to enter the sampling bucket with the rapid water flow.
[0019] 4. When collecting water from deeper sources, such as water in a well, this invention can prevent debris from falling into the sampling bucket. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.
[0021] Figure 1 This is a cross-sectional view of the conical head and conical structure of this utility model when they are fitted together.
[0022] Figure 2 This is a cross-sectional view of the conical head of this utility model during the upward collection process.
[0023] Figure 3 This is a three-dimensional structural diagram of the conical head of this utility model.
[0024] Figure 4 This is a cross-sectional view of the conical head of this utility model.
[0025] Figure 5 This is a three-dimensional structural diagram of the lower cylinder of this utility model.
[0026] Figure 6 This is a three-dimensional structural diagram of the upper cylinder of this utility model.
[0027] Figure 7 This is a cross-sectional view of the upper cylinder of this utility model.
[0028] Figure label:
[0029] Sampling barrel 10, upper cylinder 11, flange 111, upper cover 112, connector 113, mounting hole 114, vent hole 115, lower cylinder 12, connecting ring 121, conical structure 122, collection port 123, limiting sleeve 124, support rod 125, guide rod 126, limiting screw 127, flexible cylinder 13, exhaust cover 14, sealing cover 141, sliding rod 142, limiting plate 143, annular groove 145;
[0030] Conical head 20, buoyancy chamber 21, threaded hole 211, screw 212, guide hole 22, vent groove 221, cover plate 23, bolt 231, sealing ring 24, counterweight 25;
[0031] Pull ring 30. Detailed Implementation
[0032] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.
[0033] Example 1:
[0034] See Figure 1-7 A water sample collection tool includes a sampling bucket 10 with a collection port 123 at the bottom. The lower end of the sampling bucket 10 is a conical structure 122 that is wider at the top and narrower at the bottom. The collection port 123 is located at the lower end of the conical structure 122. A conical head 20 adapted to the inner wall of the conical structure 122 is movably installed inside the sampling bucket 10. At least one buoyancy cavity 21 is provided inside the upper end of the conical head 20. A pull ring 30 is provided at the top of the sampling bucket 10. When the outer wall of the conical head 20 is in contact with the inner wall of the conical structure 122, the head of the lower end of the conical head 20 extends out of the collection port 123 by a certain length.
[0035] Sampling bucket 10 is used to hold the collected water, and the conical head 20 has a certain weight. In the longitudinal position, such as Figure 1 As shown, the conical head 20 closes the collection port 123 during natural descent. When the collection port 123 is below the water surface, making the water level approximately above the conical head 20, the conical head 20 moves upward under water pressure, creating a gap between the conical head 20 and the collection port 123. Water enters the sampling container 10 through this gap. When the water level inside the conical structure 122 is higher than the conical head 20, the conical head 20 quickly floats upward due to the buoyancy chamber 21 inside it. Figure 2 As shown, water enters the sampling bucket 10 through the collection port 123. As the sampling bucket 10 is further lowered, sufficient water is collected within it. This structure allows the conical head 20 to rise and open the collection port 123 after the collection port 123 of the sampling bucket 10 has submerged below the water surface for collection. Furthermore, because the conical head 20 effectively breaks up water, it prevents impurities floating on the surface from entering the sampling bucket 10 during collection.
[0036] In this embodiment, the conical head 20 is made of plastic.
[0037] When removing the water from the sampling bucket 10, the bottom of the conical head 20 is brought against the bottom of the container. As the sampling bucket 10 is lowered, there is a large gap between the conical head 20 and the collection port 123, and the water in the sampling bucket 10 flows out into the container through this gap.
[0038] Furthermore, a counterweight 25 is installed inside the buoyancy cavity 21. The counterweight 25 controls the conical head 20 to float at the required depth.
[0039] Specifically, in order to facilitate the installation of the counterweight 25, the conical head 20 is provided with a threaded hole 211 at the bottom of the buoyancy cavity 21. The counterweight 25 has a ring structure, and the threaded end of the screw 212 passes through the central hole of the counterweight 25 and is connected and fixed to the threaded hole 211.
[0040] See Figure 3 A sealing groove is provided on the conical wall of the conical head 20, and a sealing ring 24 is installed in the sealing groove to improve the sealing effect between the conical head 20 and the inner wall of the conical structure 122.
[0041] In this embodiment, see Figure 3 , 4 The top of the conical head 20 is provided with a groove, and a cover plate 23 is sealed and installed on the top of the conical head 20 at the position corresponding to the groove, thereby forming the buoyancy cavity 21. Specifically, the cover plate 23 is installed on the top of the conical head 20 by cover bolts 231, and the cover plate 23 and the conical head 20 are sealed and connected by installing a sealing ring or applying sealant.
[0042] In this embodiment, to ensure the balance of the conical head 20, see [reference needed]. Figure 3 , 4 The conical head 20 has three buoyancy chambers 21 evenly distributed in a ring. When the counterweight 25 is installed in each buoyancy chamber 21, the weight of the counterweight 25 in each buoyancy chamber 21 is the same.
[0043] See Figures 1-5 The cone-shaped head 20 has a guide hole 22 at its top center. A guide rod 126 is installed on the inner wall of the sampling bucket 10 via a support rod 125, and the guide rod 126 passes through the guide hole 22. The cone-shaped head 20 can move stably up and down by cooperating with the guide hole 22 and the guide rod 126.
[0044] In this embodiment, see Figure 3 , 4 The inner wall of the guide hole 22 is provided with an exhaust groove 221, which is arranged along the axial direction of the guide hole 22. By providing the exhaust groove 221, when the conical head 20 moves up and down along the guide rod 12, the air pressure or water pressure in the guide hole 22 can be balanced with the external pressure, making the conical head 20 run more smoothly.
[0045] See Figure 2 , 5A limiting sleeve 124 is fixedly installed on the support rod 125. A guide rod 126 passes through the limiting sleeve 124. A limiting screw 127 is radially screwed onto the limiting sleeve 124. The limiting screw 127 abuts against the guide rod 126, limiting the guide rod 126 and the limiting sleeve 124. By adjusting the extension length of the lower end of the guide rod 126, the upward stroke of the conical head 20 can be controlled, that is, the gap between the conical head 20 and the collection port 123 can be controlled, so that water enters the sampling bucket 10 more slowly. This avoids the situation where, when collecting samples in shallow water, the sampler is too close to the bottom, causing dirt from the bottom to enter the sampling bucket 10 with the rapid water flow.
[0046] Specifically, see Figure 5 Three support rods 125 are welded to the outer wall of the limiting sleeve 124, and the three support rods 125 are then welded and fixed to the inner wall of the sampling barrel 10.
[0047] Example 2:
[0048] Based on the embodiments, see Figure 6 , 7 The sampling barrel 10 has a flange 111 on its top inner wall. A top cover 112 is detachably mounted on the flange 111 via a connector 113. The top cover 112 has at least one mounting hole 114 and at least one vent hole 115 around the mounting hole 114. The exhaust cover 14 is connected to the mounting hole 114. The exhaust cover 14 includes a sealing cover 141, a sliding rod 142, and a limiting member 143. The sliding rod 142 is fixed to the lower side of the sealing cover 141 and passes through the mounting hole 114 from top to bottom. The limiting member 143 is fixedly mounted on the lower end of the sliding rod 142. The vent hole 115 is located on the lower side of the sealing cover 141. An annular groove 145 is provided on the lower side of the sealing cover 141 at the position corresponding to the vent hole 115.
[0049] With the above structure, when water enters the sampling bucket 10, the air pressure inside the sampling bucket 10 increases, and the air inside the sampling bucket 10 is discharged laterally from the annular groove 145 through the vent 115. When the sampling bucket 10 is lifted, when the water level inside the sampling bucket 10 is higher than the water surface, air enters from the annular groove 145 through the vent 115 and finally enters the sampling bucket 10, and the conical head 20 moves down to close the collection port 123.
[0050] With the above structure, when collecting water from deeper sources, such as water in a collection well, debris from the well wall is prevented from falling into the sampling bucket 10.
[0051] In this embodiment, the connector 113 uses a hand-tightening bolt for easy opening.
[0052] Example 3:
[0053] Based on Example 1 or Example 2, see Figure 1 , 2 The sampling container 10 includes an upper cylinder 11 and a lower cylinder 12, with a flexible cylinder 13 fixedly connected between the upper cylinder 11 and the lower cylinder 12. The lower cylinder 12 includes a connecting ring 121 and a sampling head fixedly connected to the lower end of the connecting ring 121. The sampling head has a conical structure 122. This structure facilitates storage.
[0054] Specifically, the flexible cylinder 13 can be made of waterproof Oxford cloth, with both ends of the cylinder sleeved on the lower end of the upper cylinder 11 and the upper end of the connecting ring 121, and fixed by glue.
[0055] The flexible cylinder 13 can also be a plastic telescopic folding cylinder. Similarly, the two ends of the cylinder are respectively sleeved on the lower end of the upper cylinder 11 and the upper end of the connecting ring 121, and are fixed by glue.
[0056] The method of use or principle of this utility model:
[0057] When in use, a rope is installed on the pull ring 30. In the longitudinal position, such as... Figure 1 As shown, the conical head 20 closes the collection port 123 during natural descent. When the collection port 123 is below the water surface, and the water level is approximately above the conical head 20, the conical head 20 floats upward under water pressure, creating a gap between the conical head 20 and the collection port 123. Water enters the sampling container 10 through this gap. When the water level inside the conical structure 122 is higher than the conical head 20, the conical head 20 rapidly floats upward under buoyancy due to the buoyancy chamber 21 within it. Figure 2 As shown, water enters the sampling bucket 10 from the collection port 123. As the sampling bucket 10 is lowered further, enough water is collected in the sampling bucket 10.
[0058] When water enters the sampling bucket 10, the air pressure inside the sampling bucket 10 increases, and the air inside the sampling bucket 10 is discharged laterally from the annular groove 145 through the vent 115. When the sampling bucket 10 is lifted, when the water level inside the sampling bucket 10 is higher than the water surface, air enters from the annular groove 145 through the vent 115 and finally enters the sampling bucket 10, and the conical head 20 moves down to close the collection port 123.
[0059] When removing the water from the sampling bucket 10, the bottom of the conical head 20 is brought against the bottom of the container. As the sampling bucket 10 is lowered, there is a large gap between the conical head 20 and the collection port 123, and the water in the sampling bucket 10 flows out into the container through this gap.
Claims
1. A water sampling tool comprising a sampling bucket (10) having a collection port (123) in the bottom thereof, characterized by: The sampling bucket (10) has a cone-shaped structure (122) at the bottom, which is larger at the top and smaller at the bottom. The collection port (123) is located at the bottom of the cone-shaped structure (122). A cone-shaped head (20) adapted to the inner wall of the cone-shaped structure (122) is movably installed inside the sampling bucket (10). At least one buoyancy cavity (21) is provided inside the upper end of the cone-shaped head (20). A pull ring (30) is provided on the top of the sampling bucket (10). When the outer wall of the cone-shaped head (20) is in contact with the inner wall of the cone-shaped structure (122), the head of the lower end of the cone-shaped head (20) extends out of the collection port (123) by a certain length.
2. A water sampling tool according to claim 1, wherein: A counterweight (25) is installed inside the buoyancy cavity (21).
3. A water sampling tool according to claim 2, wherein: The conical head (20) has a threaded hole (211) at the bottom of the buoyancy cavity (21). The counterweight (25) has a ring structure. The threaded end of the screw (212) passes through the center hole of the counterweight (25) and is connected and fixed to the threaded hole (211).
4. The water sampling tool of claim 1, wherein: A sealing groove is provided on the conical wall of the conical head (20), and a sealing ring (24) is installed in the sealing groove.
5. The water sampling tool of claim 1, wherein: The top of the conical head (20) is provided with a groove, and a cover plate (23) is sealed and installed at the position corresponding to the groove on the top of the conical head (20), thereby forming the buoyancy cavity (21).
6. A water sampling tool according to claim 1, characterized in that: The top center of the conical head (20) is provided with a guide hole (22), and the inner wall of the sampling bucket (10) is equipped with a guide rod (126) through a support rod (125), and the guide rod (126) passes through the guide hole (22).
7. A water sampling tool according to claim 6, wherein: The inner wall of the guide hole (22) is provided with an exhaust groove (221), which is arranged along the axial direction of the guide hole (22).
8. A water sampling tool according to claim 6, wherein: A limiting sleeve (124) is fixedly installed on the support rod (125). The guide rod (126) passes through the limiting sleeve (124). A limiting screw (127) is radially screwed onto the limiting sleeve (124). The limiting screw (127) abuts against the guide rod (126) to limit the guide rod (126) and the limiting sleeve (124).
9. The water sampling tool of claim 1, wherein: The sampling bucket (10) has a flange (111) on its top inner wall. A top cover (112) is detachably mounted on the flange (111) via a connector (113). The top cover (112) has at least one mounting hole (114) and at least one vent hole (115) around the mounting hole (114). An exhaust cover (14) is connected to the mounting hole (114). The exhaust cover (14) includes a sealing cover (115). 41) Sliding rod (142) and limiting member (143). The sliding rod (142) is fixed on the lower side of the closed cover (141). The sliding rod (142) passes through the mounting hole (114) from top to bottom. The limiting member (143) is fixedly installed at the lower end of the sliding rod (142). The vent hole (115) is located on the lower side of the closed cover (141). The lower side of the closed cover (141) is provided with an annular groove (145) at the position of the corresponding vent hole (115).
10. A water sampling tool according to any one of claims 1 to 9, wherein: The sampling barrel (10) comprises an upper cylinder (11) and a lower cylinder (12), and a flexible cylinder (13) is fixed between the upper cylinder (11) and the lower cylinder (12); the lower cylinder (12) comprises a connecting ring (121) and a sampling head fixed at the lower end of the connecting ring (121), and the sampling head is in a conical structure (122).