A water sample collector

Abstract

The present invention relates to the technical field of environmental water quality sampling equipment, a water sample collector, including a sampling container, a rope, a floating plate, and a fixing clamp, wherein the sampling container is a cylinder with a sampling hole, a universal connector is provided between the top of the sampling container and the rope, so that the sampling container can rotate, a group of symmetrical guide plates are provided on the outer wall of the middle part of the sampling container, the inner end of the guide plate is connected and fixed to the side wall of the sampling container, the outer end to the inner end of the guide plate is a smooth curved surface from thin to thick, and the guide plate and the sampling container together form a guide body with a shuttle-shaped profile in the horizontal cross section, which can be unidirectionally guided in the horizontal direction, so that when impacted by a lateral water flow, the guide plates on both sides of the sampling container can be parallel to the water flow direction, so that the sampling container remains in a vertical state. The present invention helps to solve the problem that the existing structure is easily affected by the impact of the water flow, and the position is offset, which affects the accuracy of the sampling depth.

Description

Technical Field

[0001] The invention relates to the technical field of environmental water quality sampling equipment, in particular to a water sample collector. Background Art

[0002] Water pollution is caused by harmful chemicals that reduce or lose the use value of water. When organic matter in sewage is decomposed by microorganisms, it consumes oxygen in the water and affects the life of aquatic organisms. Water pollution has become a problem that people now pay attention to and urgently need to solve. Before treating water pollution, it is necessary to use a water sampling device to sample the water quality.

[0003] For example, Chinese patent CN202122748280.2 discloses a water sampling device that can accurately determine the depth. The device includes a base plate, a limiting through hole is opened at the center of the base plate, and two handles are symmetrically arranged on the top surface of the base plate. The outer edge of the base plate is connected to at least two arc-shaped floating plates evenly distributed in the circumferential direction, and all the arc-shaped floating plates together form a floating outer ring. A rope is movably connected in the limiting through hole, and a sampling container is connected to the bottom end of the rope. A rope fixing clamp is connected to the rope, and the outer contour of the rope fixing clamp is larger than the aperture of the limiting through hole, and scale lines are drawn on the rope.

[0004] In the specific implementation process of the above technical scheme, although the length of the line can be accurately controlled with the help of the base plate and the rope fixing clamp, when the sampling container is lowered into the water, due to the complex water flow conditions in the water and the lack of sufficient diversion and self-balancing structure, the sampling container is often impacted by the water flow and deviates and flows, resulting in the rope being unable to maintain a vertical state in the water. Although the length of the line can be controlled, the actual depth of the sampling container does not reach the target depth due to the offset, and there is a certain degree of deviation, which affects the sampling accuracy. Summary of the invention

[0005] The purpose of the present invention is to provide a water sample collector, which helps to solve the problem that the existing structure is easily affected by the impact of water flow, resulting in position deviation and affecting the accuracy of sampling depth.

[0006] In order to achieve the above object, the present invention adopts such technical solution:

[0007] A water sample collector comprises a sampling container, a rope, a floating plate and a fixing clamp. The sampling container is a cylinder with a sampling hole. A universal connector is provided between the top of the sampling container and the rope so that the sampling container can rotate. A group of symmetrical guide plates are provided on the outer wall of the middle part of the sampling container. The inner ends of the guide plates are connected and fixed to the side walls of the sampling container. The guide plates are smooth curved surfaces from thin to thick from the outer ends to the inner ends. The guide plates and the sampling container together form a guide body with a shuttle-shaped profile in the horizontal cross section. The guide bodies can perform unidirectional guide in the lateral direction so that when impacted by lateral water flow, the guide plates on both sides of the sampling container can be parallel to the water flow direction so that the sampling container remains in a vertical state.

[0008] On the basis of the above technical solution, a counterweight is connected to the bottom of the sampling container, and a universal connector is provided between the counterweight and the sampling container. The counterweight helps to increase the weight of the sampling container during the downward movement, so that it has enough weight to straighten the rope, which helps the sampling container to maintain a vertical state and can make the depth judgment result based on the rope pay-off length more accurate.

[0009] On the basis of the above technical solution, the sampling container is a shuttle-shaped cylinder with upper and lower pointed ends, and a cavity for loading water samples is provided inside the sampling container. This structure helps to reduce the resistance encountered by the sampling container during the descent or ascent in the water, making the sampling process easier and more efficient. In addition, the structure naturally forms a symmetrical gradient curved surface guide structure at the upper and lower ends of the sampling container, which can reduce the influence of the lateral water flow on the sampling container in the water.

[0010] On the basis of the above technical solution, the universal connector adopts a ring joint or a universal ball joint. The function of the universal connector is to release the freedom of movement of each component and reduce the constraint between adjacent components. When the sampling container is affected by the lateral water flow in the water, each component can freely "isolate" according to the degree of influence it is subjected to, and each component can perform self-regulating actions such as swinging and rotating to different degrees, thereby making the self-correction effect more delicate and effective.

[0011] On the basis of the above technical solution, at least one circle of auxiliary plates can be detachably spliced ​​on the outer side of the float, and the auxiliary plates are composed of at least two arc-shaped structures. By adopting this simple and convenient splicing and superposition method, it is flexibly adapted according to the different descending depths of the sampling container or the size of the sampling container, the weight of the counterweight block and other factors to meet the floating stability as a horizontal plane reference body.

[0012] Based on the above technical solution, the outer end of the guide plate is a pointed structure.

[0013] On the basis of the above technical solution, the sampling hole is arranged on the side wall of the sampling container, and a one-way flap is arranged inside the sampling hole.

[0014] On the basis of the above technical solution, the sampling container is detachably connected with a bottom cover, which helps to make the sampling and drainage process more convenient and efficient.

[0015] Based on the above technical solution, a through hole is provided on the top of the sampling container.

[0016] On the basis of the above technical solution, the guide plate is a longitudinal spiral blade structure, and the thickness of the guide plate gradually increases from the bottom to the top; the guide plates on both sides are movably connected to the sampling container through suspensions at the upper and lower ends, and the suspension is located at the center of the sampling container and is provided with a vertical rotating shaft, and the outer wall of the rotating shaft is provided with a spiral guide vane with the same rotation direction as the guide plate, the guide plate, suspension, rotating shaft and spiral guide vane constitute a rotating body that can rotate with the rotating shaft as the rotation axis during the downward process of the sampling container, and the spiral guide vane can form a guide structure to guide the water inside the sampling container upward after rotation. By setting a rotating body, the structure of the sampling container is made richer. When the sampling container descends in the water due to its own weight, the rotating body will be prompted to rotate. The guide body on the outside can form a guiding mechanism of the "rifle principle" on the outside of the sampling container, making the downward path of the sampling container more stable. The rotation of the spiral guide plate in the sampling container can continuously guide the water that has been poured into the interior of the sampling container by the sampling hole during the downward movement upward, and discharge it outward through the through hole, so that the water inside the sampling container is continuously discharged and renewed during the downward movement, thereby avoiding the accumulation of shallow water inside the sampling container and being unable to be discharged to occupy space, resulting in the final sampling of water being inaccurate.

[0017] On the basis of the above technical solution, a set of symmetrical guide wings are provided on the outside of the universal connector, and the guide wings have a smooth curved surface from thin to thick from the outer end to the inner end, and the guide wings on the universal connector closer to the sampling container are larger. This structure hierarchically differentiates the guide mechanism, so that the components on the upper and lower sides of the sampling container can share the guide pressure of the sampling container when affected by the lateral water flow, so that the sampling container can quickly self-correct and adjust to a vertical state in time. When encountering a lateral water flow with a smaller flow rate, the guide wings on both sides can complete the guide and stabilization function alone. Therefore, the overall guide structure is more flexible and agile, and responds quickly.

[0018] Compared with the prior art, the present invention has at least the following advantages:

[0019] 1. The present invention arranges a group of symmetrical guide plates on the sampling container, and arranges a universal connector between the sampling container and the rope, so that the sampling container can rotate relatively. When the sampling container sinks into the water, the side of the guide plate serves as a blocking surface. When the lateral water flow hits the blocking surface, the guide plate drives the sampling container to rotate until the side of the guide plate is aligned with the direction of the water flow, and the original blocking surface of the guide plate shifts the tangent direction of the water flow to serve as a guide curved surface, thereby reducing the impact of the flowing water on the sampling container, so that the sampling container can also maintain a vertical state in the water flow, and will not be tilted and offset by the upper rope due to the influence of the water flow like the existing structure.

[0020] 2. The present invention can improve the longitudinal stability of the sampling container by configuring the sampling container to be a shuttle-shaped cylinder with upper and lower pointed ends. When the guide plate acts, the sampling container can rotate about its longitudinal center axis, thereby ensuring that it is in a vertical state.

[0021] 3. The present invention provides a detachable bottom cover at the bottom of the sampling container, so that the drainage action after sampling is more convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of a water sample collector in one embodiment;

[0023] Figure 2 for Figure 1 The schematic diagram of the structure of the sampling container;

[0024] Figure 3 for Figure 2 A cross-sectional view of the sampling container;

[0025] Figure 4 It is a schematic diagram of the structure of a sampling container in another embodiment;

[0026] Figure 5 A schematic diagram of a partial structure of a through hole of a sampling container in another embodiment;

[0027] Figure 6 is a partial structural schematic diagram of a universal connector in another embodiment;

[0028] Figure 7 It is a structural schematic diagram of a water sample collector in another embodiment;

[0029] Figure 8 for Figure 7 A top view of the middle floating plate;

[0030] Fig. 9 It is a structural schematic diagram of a sampling container in another embodiment;

[0031] Fig.10 for Fig. 9 Schematic diagram of the internal structure of the sampling container.

[0032] Labels in the figure: 1. Sampling container; 11. Sampling hole; 12. One-way flap; 13. First guide plate; 14. Bottom cover; 15. Cavity; 16. Second guide plate; 17. Through hole; 18. Third guide plate; 181. Suspension; 2. Rope; 3. Floating plate; 31. Limiting hole; 32. Auxiliary plate; 33. Insert rod; 4. Fixing clamp; 5. Counterweight block; 6. Lifting ring joint; 61. Guide wing; 7. Universal ball joint; 8. Transfer shaft; 9. Spiral guide vane. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Example 1, see Figure 1-3 This embodiment discloses a water sample collector, which is composed of a sampling container 1, a rope 2, a floating plate 3, a fixing clamp 4, a counterweight 5 and a universal connector.

[0035] The sampling container 1 is a shuttle-shaped cylindrical structure with pointed upper and lower ends, and a universal connector is connected to the upper and lower ends, so that the sampling container 1 can rotate along its longitudinal central axis. The bottom of the sampling container 1 is connected to the counterweight 5 through a universal connector, so that it has enough weight to sink to the target depth. The top of the sampling container 1 is connected to the rope 2 through a universal connector, and the rope 2 mainly plays the role of pulling and suspending the sampling container 1. A floating disk 3 is sleeved on the rope 2, and the floating disk 3 can float on the water surface as a reference carrier of the horizontal plane. A limiting through hole 31 is provided at the center position of the floating disk 3, and the rope 2 passes through the limiting through hole 31, and a fixing clamp 4 is clamped on the rope 2 above the limiting through hole 31. The fixing clamp 4 structure is larger than the limiting through hole 31 and will abut against the top of the limiting through hole 31. A length mark is set on the rope 2 for observing and judging the length of the line. For example, when sampling is required at a depth of 5 meters underwater, the fixing clamp 4 is installed at the 5-meter mark on the rope 2. When the sampling container 1 sinks into the water, the rope 2 at the lower end will be driven downward. When it descends to the target depth of 5 meters, the fixing clamp 4 just touches the top of the limit hole 31, which helps the operator to easily observe whether the sampling container 1 sinks accurately into place.

[0036] The universal connector in this embodiment is a lifting ring joint 6, which can rotate along its own longitudinal center axis.

[0037] like Figure 2As shown, the first guide plate 13 is provided on the side wall of the sampling container 1 in this embodiment, and the number of the first guide plates 13 is two and they are symmetrically distributed. The inner side end of the first guide plate 13 is connected and fixed to the side wall of the sampling container 1, and the outer side end to the inner side end of the first guide plate 13 is a smooth curved surface from thin to thick, and the first guide plate 13 and the sampling container 1 together form a guide body with a shuttle-shaped profile in the horizontal cross section, which can be unidirectionally guided in the horizontal direction, so that when the sampling container 1 is impacted by the horizontal water flow, the first guide plates 13 on both sides of the sampling container 1 can be parallel to the water flow direction, so that the sampling container 1 remains in a vertical state.

[0038] During the specific implementation process, when the sampling container 1 sinks into the water, the side surface of the first guide plate 13 serves as a blocking surface. When the lateral water flow hits the blocking surface, the first guide plate 13 will be driven to drive the sampling container 1 to rotate until the side surface of the first guide plate 13 is aligned with the direction of the water flow. The original blocking surface of the first guide plate 13 transfers the tangent direction of the water flow and serves as a guide curved surface, thereby reducing the impact of the flowing water on the sampling container 1, so that the sampling container 1 can also maintain a vertical state in the water flow, and will not be affected by the water flow like the existing structure, causing the upper rope 2 to tilt and shift.

[0039] Combination Figure 2 and Figure 3 The sampling container 1 has a cavity 15 for loading water samples inside, and a sampling hole 11 for sampling water is provided on the side wall of the sampling container 1. The sampling hole 11 connects the cavity 15 with the outside, and the inner end of the sampling hole 11 has an inclined table, and a one-way flap 12 is provided on the inclined table. When the sampling container 1 enters the water, the external water will enter the cavity 15 through the sampling hole 11, and after the sampling container 1 is pulled up, the water in the cavity 15 cannot flow out of the sampling hole 11 in the opposite direction due to the obstruction of the one-way flap 12. It should be noted that the sampling hole 11 structure in this embodiment is only one of many embodiments. According to the prior art, other structural forms of sampling structures may also be used in other embodiments, such as an opening structure with an opening and closing control function (mechanical or electrical or magnetic control).

[0040] In order to conveniently and quickly discharge the water sample in the cavity 15 after sampling, a bottom cover 14 is threadedly connected to the bottom of the sampling container 1. The bottom cover 14 can be opened to quickly discharge the internal water sample.

[0041] Embodiment 2, on the basis of embodiment 1, as Figure 4 As shown, in order to achieve a better diversion effect, a second guide plate 16 is used. The outer end of the second guide plate 16 is a pointed structure, which enables the second guide plate 16 to have a certain diversion effect in the longitudinal direction after being aligned with the water flow direction, making the diversion function of the second guide plate 16 more flexible and accurate.

[0042] Example 3, based on Example 1, in order to make the sampling process smoother, the air in the cavity 15 can be quickly discharged during the water intake process of the sampling container 1, and after reaching the target depth, the water sample in the cavity 15 can fully interact with the outside, such as Figure 5 As shown, a through hole 17 is provided on the top of the sampling container 1, thereby forming a reflux interaction path between the cavity 15 and the outside.

[0043] Embodiment 4, on the basis of embodiment 1, adopts universal ball joint 7 to replace lifting ring joint 6, so that sampling container 1 can not only rotate in the horizontal direction, but also swing in the longitudinal direction, which helps to coordinate with the guide plate to adapt to the complex and diverse underwater water flow conditions, thereby ensuring that sampling container 1 is in a vertical state as much as possible, thereby improving the accuracy of sinking depth.

[0044] Example 5, based on Example 1, combined with Figure 7 and Figure 8 As shown, in order to ensure the floating effect of the floating plate 3, an auxiliary plate 32 is further provided on the outside of the floating plate 3. The auxiliary plate 32 and the floating plate 3 are made of the same material, and both use foam or rubber sheet and other materials to achieve the effect of floating on the water surface.

[0045] Further, such as Figure 8 As shown, the auxiliary plate 32 is composed of two semicircular arc structures, and there is a gap between the inner wall and the floating plate 3, and between the adjacent sides of the auxiliary plates 32 on both sides. The gap is provided with a plug rod 33 as a connecting piece. Specifically, the plug rod 33 and the countersunk hole on the side wall of the auxiliary plate 32 or the floating plate 3 form a detachable clamping structure. By adopting this simple and convenient, spliced ​​and superimposed method, it is flexibly adapted according to the different descending depths of the sampling container 1 or the size of the sampling container 1, and the weight of the counterweight block 5, so as to meet the floating stability as a horizontal plane reference body.

[0046] Furthermore, a group of guide wings 61 are provided on the outer side walls of the lifting ring joint 6 located on the upper and lower sides of the sampling container 1. The guide wings 61 have a smooth curved surface from thin to thick from the outer end to the inner end, and the guide wings on the universal connector closer to the sampling container 1 are larger. This structure hierarchically differentiates the diversion mechanism so that the components on the upper and lower sides of the sampling container 1 can share the diversion pressure of the sampling container 1 when affected by the lateral water flow, so that the sampling container 1 can quickly self-correct and adjust to a vertical state in time. When encountering a lateral water flow with a smaller flow rate, the diversion and stabilization function can be completed with the help of the guide wings 61 on both sides alone. Therefore, the overall diversion structure is more flexible and sensitive, and responds quickly.

[0047] Example 6, based on Example 3, combined with Fig. 9 and Fig.10The guide plate adopts a third guide plate 18, and the third guide plate 18 is a longitudinal spiral blade structure, and the thickness of the third guide plate 18 gradually increases from the bottom to the top; the third guide plates 18 on both sides are movably connected to the sampling container 1 at the upper and lower ends through the suspension 181. Specifically, in this embodiment, the sampling container 1 has an upper and lower hollow cone structure that are always kept fixed. The outer wall of the suspension 181 abuts against the inner wall of the cone structure, and the two are connected by a bearing structure. The suspension 181 in this example is a disk body with multiple upper and lower through holes. In other embodiments, the suspension 181 can also adopt a beam structure.

[0048] Furthermore, the suspension 181 is provided with a vertical rotating shaft 8 at the center position inside the sampling container 1, and the upper and lower ends of the rotating shaft 8 are connected to the suspension 181 through the bearing, and the outer wall of the rotating shaft 8 is provided with a spiral guide plate 9 with the same rotation direction as the third guide plate 18. The third guide plate 18, the suspension 181, the rotating shaft 8 and the spiral guide plate 9 constitute a rotating body that can rotate with the rotating shaft as the rotation axis during the downward movement of the sampling container 1. After the spiral guide plate 9 rotates, it can form a guide structure that guides the water inside the sampling container 1 upward. In this embodiment, the third guide plate 18 and the spiral guide plate 9 can rotate in the counterclockwise direction (looking down) when descending in the water.

[0049] By setting a rotating body, the structure of the sampling container 1 is enriched. When the sampling container 1 descends in the water due to its own weight, the rotating body will be prompted to rotate. The third guide body 18 on the outside can form a guiding mechanism of the "rifle principle" on the outside of the sampling container 1, so that the downward path of the sampling container 1 is more stable. The rotation of the spiral guide plate 9 in the sampling container can continuously guide the water that has been poured into the sampling container 1 by the sampling hole 11 during the downward movement upward, and discharge it outward through the through hole 17, so that the water inside the sampling container 1 is continuously discharged and updated during the downward movement, thereby avoiding the accumulation of shallow water in the sampling container and being unable to be discharged to occupy space, resulting in the final sampling of water being inaccurate.

[0050] In addition, the rotating shaft 8 adopts a solid rod structure. Due to its vertical setting, a center of gravity structure is naturally formed inside the sampling container 1. The upper and lower ends are connected to the third guide body 18 by means of the suspension 181 to form a rotating body. The rotating body and the upper and lower cones together constitute the sampling container 1, and the entire container structure is more stable and reliable. The rotating shaft 8 and the spiral guide plate 9 are located at the inner center of the cavity 15. When the cavity 15 is filled with water, the rotating shaft 8 and the spiral guide plate 9 can also maintain the balance of the water body, avoiding the lateral shaking of the internal water body during the upward process, thereby affecting the upward posture of the sampling container 1. This helps to reduce the occurrence of the opening and closing control structure of the sampling hole 11 being opened by mistake, and helps to avoid the lateral shaking of the sampling container 1, and then getting stuck on water plants, debris and other items in the water.

[0051] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A water sample collector, comprising a sampling container (1), a rope (2), a floating plate (3), and a fixing clamp (4). It is characterized in that The sampling container (1) is a cylinder having a sampling hole (11). A universal connector is provided between the top of the sampling container (1) and the rope (2), so that the sampling container (1) can rotate. A group of symmetrical guide plates are provided on the outer wall of the middle part of the sampling container (1). The inner ends of the guide plates are connected to the side walls of the sampling container (1). The guide plates are smooth curved surfaces from thin to thick from the outer ends to the inner ends. The guide plates and the sampling container (1) together form a guide body with a shuttle-shaped profile in the horizontal cross section, which can perform unidirectional flow guidance in the horizontal direction. When the sampling container (1) is impacted by a horizontal water flow, the guide plates on both sides of the sampling container (1) can be parallel to the water flow direction, so that the sampling container (1) remains in a vertical state. The top of the sampling container (1) is provided with a through hole (17); The guide plate is a longitudinal spiral blade structure, and the thickness of the guide plate gradually increases from the bottom to the top; the guide plates on both sides are movably connected to the sampling container (1) at the upper and lower ends through a suspension (181); the suspension (181) is provided with a vertical rotating shaft (8) at the center position inside the sampling container (1); the outer wall of the rotating shaft (8) is provided with a spiral guide plate (9) with the same rotation direction as the guide plate; the guide plate, the suspension (181), the rotating shaft (8) and the spiral guide plate (9) constitute a rotating body that can rotate with the rotating shaft (8) as the rotation axis during the downward movement of the sampling container (1); after the spiral guide plate (9) rotates, it can form a guide structure for guiding the water inside the sampling container (1) upward.

2. A water sample collector according to claim 1, It is characterized in that A counterweight block (5) is connected to the bottom of the sampling container (1), and a universal connector is provided between the counterweight block (5) and the sampling container (1).

3. A water sample collector according to claim 1, It is characterized in that The sampling container (1) is a shuttle-shaped cylinder with upper and lower pointed ends, and a cavity (15) for loading water samples is provided inside the cylinder.

4. A water sample collector according to claim 1, It is characterized in that The universal connection piece adopts a lifting ring joint (6) or a universal ball joint (7).

5. A water sample collector according to claim 1, It is characterized in that At least one circle of subsidiary plates (32) is detachably spliced ​​on the outside of the floating plate (3), and the subsidiary plates (32) are composed of at least two arc-shaped structures.

6. A water sample collector according to claim 1, It is characterized in that The sampling hole (11) is arranged on the side wall of the sampling container (1), and a one-way flap (12) is arranged inside the sampling hole (11).

7. A water sample collector according to claim 1, It is characterized in that The sampling container (1) is detachably connected to a bottom cover (14).

8. A water sample collector according to claim 1 or 2, It is characterized in that A group of symmetrical guide wings (61) are arranged on the outside of the universal connector. The guide wings (61) are smooth curved surfaces from thin to thick from the outside end to the inside end, and the guide wings (61) on the universal connector closer to the sampling container (1) are larger.

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