A fixed-point stratified sampling device for water quality and plankton

Abstract

The present invention relates to a water quality and plankton sampler, and provides a fixed-point stratified sampling device for water quality and plankton, which includes a float, a balance rod, a sampling tube, a steel wire suspension rope, a water pump, a sampling bottle and an inlet control ring: The balance rod is installed on the side of the float, the sampling tube is installed in the middle of the float, and the inlet control ring is rotatably arranged on the sampling tube, and the water inlet or closing process is realized by rotating the inlet control ring. The steel wire suspension rope is installed on the balance rod, and a water pump and a sampling bottle are arranged outside the float to facilitate the outward export of the liquid extracted by the sampling tube; This application can realize the collection of accurate depth samples by adjusting the length of the sampling tube and controlling the inlet control ring, and control the inlet control ring to realize the collection of mixed samples of water quality and plankton at different depths, which helps to understand the water quality and plankton conditions at different depths of the monitoring section or the entire monitoring section, provides support for environmental management, and protects the water ecological environment.

Description

Technical Field

[0001] The present invention relates to a water quality and plankton sampler, and particularly to a fixed-point stratified sampling device for water quality and plankton. Background Art

[0002] With the acceleration of the urbanization process, the total discharge of domestic sewage and industrial wastewater continues to increase. People pay increasing attention to the water environment quality of rivers and lakes. Due to the influence of river and lake conditions and the characteristics of water migration and movement, pollutants will continuously diffuse and even dissolve and change in the water body. Therefore, the concentration distribution of pollutants in river and lake water bodies is uneven. The water environment quality not only varies in the plane dimension but also has certain differences along the depth direction, especially obvious in waters with large water depth, high temperature difference, and complex water flow patterns. Therefore, it is necessary to conduct stratified sampling and monitoring of the water body.

[0003] At the same time, due to solar radiation and the physical and chemical properties of water, the water temperature in lakes and reservoirs shows an obvious seasonal stratified distribution along the water depth. The surface water temperature of stratified lakes and reservoirs is significantly higher than that of the middle and lower layers, resulting in stratified distribution of dissolved oxygen, nitrate, nitrogen, phosphorus and other ions, and further leading to differences in the types and densities of plankton in the lower layer of water. For the collection of plankton, sampling only in the middle and upper layers is not enough, and it cannot comprehensively reflect the distribution of plankton in the water body.

[0004] The current water quality sampling is to collect water quality samples on the vertical line using various samplers. Qualitative samples of plankton are dragged in a "∞" shape at a proper speed for 1 - 3 minutes about 0.5 m below the water surface using a No. 25 plankton net with an aperture of about 0.064 mm. Quantitative collection of plankton uses a plastic bottle of a certain volume and directly fills it with water at the sampling point. Whether it is the collection of water quality or plankton, only one layer of samples can be collected each time. If samples at different depths of the water body are needed, multiple samplings at different layers in the same area are required, which will inevitably disturb the plankton and water layers, resulting in inaccurate sampling results for different layers. At the same time, the existing samplers cannot perform accurate fixed-point sampling of samples. Summary of the Invention

[0005] The purpose of the embodiments of the present invention is to provide a fixed-point stratified sampling device for water quality and plankton, which can achieve precise sampling of different stratified areas of the water body and meet the needs of environmental monitoring and scientific research, aiming to solve the problems existing in the above background art.

[0006] The embodiments of the present invention are implemented as follows. A fixed-point stratified sampling device for water quality and plankton includes a float, a balance rod, a sampling tube, a steel wire suspension rope, a water pump, a sampling bottle, and an inlet control ring:

[0007] A plurality of balance rods are provided, and the balance rods are respectively installed on a plurality of sides of the float;

[0008] The sampling tube is installed in the middle of the float and fixed by a snap ring arranged on the sampling tube;

[0009] A plurality of first water inlets are sequentially arranged on the side of the sampling tube. An inlet control ring is rotatably arranged on the sampling tube, and when the inlet control ring is rotated, the relative position with the first water inlets is adjusted to realize the water inlet or closing process;

[0010] The steel wire suspension rope is installed on a plurality of balance rods and is used to control the depth of the float and the balance rods;

[0011] A water pump and a sampling bottle are arranged outside the float to facilitate the outward export of the liquid extracted by the sampling tube.

[0012] Preferably, the first water inlets are arranged at equal intervals on the sampling tube, and the distance between adjacent first water inlets is 50 cm.

[0013] Preferably, a second water inlet is arranged on the inlet control ring, and a sealing gasket is installed on the side of the inlet control ring where the second water inlet is located;

[0014] An elastic stopper is installed on the sampling tube, and when the inlet control ring is rotated, the relative position between the first water inlet and the second water inlet is adjusted.

[0015] Preferably, a drive shaft is rotatably installed on the float, and drive tooth parts are sequentially arranged in a staggered manner on the side of the drive shaft;

[0016] Among them, driven tooth parts meshing with the drive tooth parts are sequentially arranged on the sides of a plurality of inlet control rings;

[0017] The drive shaft is connected to a drive motor installed on the float through a coupling and is used to adjust the position of the inlet control ring.

[0018] Preferably, the water pump and the sampling bottle are connected by a second infusion tube;

[0019] A connector is installed at the top end of the sampling tube, and the connector is connected to the water pump through a first infusion tube.

[0020] Preferably, the materials of the float and the balance rods are both PVC.

[0021] Preferably, the material of the sampling tube is plexiglass.

[0022] A fixed-point stratified sampling device for water quality and plankton provided by an embodiment of the present invention can perform fixed-point stratified sampling on water quality and plankton samples in rivers, lakes and reservoirs. By adjusting the length of the sampling tube and controlling the water inlet control ring, accurate depth samples can be collected. At the same time, by controlling the water inlet control ring, mixed samples of water quality and plankton at different depths can be collected, which helps to understand the water quality and plankton conditions at different depths or the entire monitoring section of the monitoring section, provides support for environmental management, and protects the water ecological environment. Description of the Drawings

[0023] Figure 1 It is a three-dimensional structure diagram of a fixed-point stratified sampling device for water quality and plankton provided by an embodiment of the present invention;

[0024] Figure 2 It is a schematic structural diagram of the sampling tube and the water inlet control ring in a fixed-point stratified sampling device for water quality and plankton provided by an embodiment of the present invention;

[0025] Figure 3 is Figure 1 The partial enlarged view at A in;

[0026] Figure 4 It is a schematic structural diagram when the water inlet control ring controls water inlet in a fixed-point stratified sampling device for water quality and plankton provided by an embodiment of the present invention;

[0027] Figure 5 is a schematic structural diagram when the water inlet control ring controls no water inlet in a fixed-point stratified sampling device for water quality and plankton provided by an embodiment of the present invention;

[0028] In the drawings: 1 - float; 2 - balance rod; 3 - sampling tube; 4 - steel wire suspension rope; 5 - water pump; 6 - sampling bottle; 7 - first infusion tube; 8 - second infusion tube; 9 - first water inlet; 10 - water inlet control ring; 11 - second water inlet; 12 - sealing gasket; 13 - snap ring; 14 - drive shaft; 15 - drive tooth part; 16 - driven tooth part; 17 - drive motor; 18 - elastic stop; 19 - adapter. Detailed Embodiment

[0029] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] The following describes the specific implementation of the present invention in detail with reference to specific embodiments.

[0031] Such as Figures 1 to 5As shown in the figure, it is a structural diagram of a fixed-point stratified sampling device for water quality and plankton provided by an embodiment of the present invention, including a float 1, a balance rod 2, a sampling tube 3, a steel wire suspension rope 4, a water pump 5, a sampling bottle 6, and a water inlet control ring 10: A plurality of balance rods 2 are provided, and the balance rods 2 are respectively installed on multiple sides of the float 1; The sampling tube 3 is installed in the middle of the float 1 and is fixed by a snap ring 13 arranged on the sampling tube 3; A plurality of first water inlets 9 are sequentially arranged on the side of the sampling tube 3, and a water inlet control ring 10 is rotatably arranged on the sampling tube 3, and when the water inlet control ring 10 is rotated, the relative position with the first water inlet 9 is adjusted to realize the water inlet or closing process; The steel wire suspension rope 4 is installed on a plurality of balance rods 2 to control the depth of the float 1 and the balance rod 2; The outside of the float 1 is provided with a water pump 5 and a sampling bottle 6 to facilitate the outward export of the liquid extracted by the sampling tube 3.

[0032] A fixed-point stratified sampling device for water quality and plankton provided by the present application can perform fixed-point stratified sampling on water quality and plankton samples in rivers, lakes and reservoirs, and realize the collection of samples at accurate depths by adjusting the length of the sampling tube 3 and controlling the water inlet control ring 10; At the same time, by controlling the water inlet control ring 10, the collection of mixed samples of water quality and plankton at different depths can be realized, which helps to understand the water quality and plankton conditions at different depths or the entire monitoring section of the monitoring section, provides support for environmental management, and protects the water ecological environment.

[0033] In an example of the present invention, the length of the sampling tube 3 can be adjusted according to the sampling depth, and the materials of the float 1 and the balance rod 2 are both PVC, and the material of the sampling tube 3 is plexiglass.

[0034] As Figure 1 shown, as a preferred embodiment of the present invention, the first water inlets 9 are arranged at equal intervals on the sampling tube 3, and the distance between adjacent first water inlets 9 is 50 cm.

[0035] In an example of the present invention, a plurality of first water inlets 9 are all arranged on the same side of the sampling tube 3, and it is necessary to ensure that the axes of the first water inlets 9 are parallel to facilitate cooperation with the water inlet control ring 10 to adjust the water inlet depth.

[0036] As Figure 1 and Figure 2 shown, as another preferred embodiment of the present invention, a second water inlet 11 is opened on the water inlet control ring 10, and a sealing gasket 12 is installed on the side of the water inlet control ring 10 where the second water inlet 11 is located;

[0037] An elastic stop block 18 is installed on the sampling tube 3, and when the water inlet control ring 10 is rotated, the relative positions of the first water inlet 9 and the second water inlet 11 are adjusted.

[0038] In an example of the present invention, when the second water inlet 11 provided on the water inlet control ring 10 overlaps with the first water inlet 9 provided on the sampling tube 3, it is in the water inlet state, as shown in the accompanying drawings of the specification. Figure 4 However, when the water inlet control ring 10 is deflected along the sampling tube 3 under force, the second water inlet 11 and the first water inlet 9 are in a staggered state, and the water inlet stops.

[0039] As Figure 1 and Figure 3 shown, as another preferred embodiment of the present invention, a drive shaft 14 is rotatably installed on the float 1, and drive tooth portions 15 are arranged in a staggered manner on the side of the drive shaft 14 in sequence.

[0040] Among them, driven tooth portions 16 meshing with the drive tooth portions 15 are arranged in sequence on the sides of multiple water inlet control rings 10.

[0041] The drive shaft 14 is connected to a drive motor 17 installed on the float 1 through a coupling, and is used to adjust the position of the water inlet control ring 10.

[0042] In an example of the present invention, the driven tooth portions 16 are arranged in the same number as the water inlet control rings 10. When the number of water inlet control rings 10 arranged is 4, since the drive tooth portions 15 mesh with the driven tooth portions 16, 4 drive tooth portions 15 also need to be arranged. And the distance between adjacent drive tooth portions 15 is equal to the distance between adjacent first water inlets 9. And in the case where the drive tooth portions 15 are arranged in a staggered manner, it can be known that the included angle between adjacent drive tooth portions 15 is 90°. By analogy, when the number of water inlet control rings 10 and driven tooth portions 16 arranged is 6, the included angle between adjacent drive tooth portions 15 is 60°.

[0043] During actual use, the drive motor 17 drives the drive shaft 14 at the bottom to rotate through the coupling. In the initial state, the drive tooth portion 15 at the bottom of the drive shaft 14 meshes with the driven tooth portion 16 at the lowest position, and drives the driven tooth portion 16 and the water inlet control ring 10 to deflect along the sampling tube 3 during the rotation of the drive tooth portion 15. During the rotation process, the elastic stop block 18 is elastically deformed under force. When the drive tooth portion 15 rotates to 90°, the second water inlet 11 overlaps with the first water inlet 9, and water flows into the sampling tube 3 from the outside along the second water inlet 11 and the first water inlet 9 in sequence. When the drive shaft 14 continues to rotate between 90° and 180°, the drive tooth portion 15 and the driven tooth portion 16 at the lowest position are disengaged, and the elastic stop block 18 resumes deformation, so that the water inlet channel at the lowest position is closed. However, the second set of drive tooth portions 15 and driven tooth portions 16 from bottom to top enter the meshing state, thereby controlling the opening of the water inlet channel at another depth. By continuously performing the above process, the water inlet sampling work of multiple first water inlets 9 can be realized when the drive shaft 14 rotates one week.

[0044] AsFigure 1 As shown, as another preferred embodiment of the present invention, the water pump 5 is connected to the sampling bottle 6 through the second infusion tube 8;

[0045] A swivel joint 19 is installed at the top of the sampling tube 3, and the swivel joint 19 is connected to the water pump 5 through the first infusion tube 7.

[0046] In an example of the present invention, after the sampling of the sampling tube 3 is completed, the water flow can flow from the sampling tube 3 along the swivel joint 19, the first infusion tube 7 and the second infusion tube 8 in turn under the working condition of the water pump 5, and finally be sent into the sampling bottle 6.

[0047] In summary, the operation process is as follows. Before putting the sampling device into the water body, according to the depth of the sample to be collected, the first water inlet 9 on the sampling tube 3 is closed by adjusting the water inlet control ring 10. The sampling tube 3 is inserted into the hole in the middle of the float 1 and fixed by the snap ring 13 on the sampling tube 3. Connect the water pump 5, prepare the sampling bottle 6 at one end of the water pump 5, put the sampling device into the water body, drive the drive shaft 14 to rotate synchronously by the driving motor 17 provided, the driving tooth part 15 rotates accordingly, and since the driving tooth part 15 meshes with the driven tooth part 16, the water inlet control rings 10 at multiple positions can be successively driven to deflect along the sampling tube 3 during the rotation of the drive shaft 14, adjusting the relative positions of the second water inlet 11 and the first water inlet 9, so that the water bodies at different depths can enter the sampling tube 3 from bottom to top in sequence. Starting the water pump 5 can collect samples at different depths one by one; therefore, the present application can perform fixed-point stratified sampling on the water quality and plankton samples of rivers, lakes and reservoirs, and realize the collection of accurate-depth samples by adjusting the length of the sampling tube 3 and controlling the water inlet control ring 10; at the same time, by controlling the water inlet control ring 10, the collection of mixed samples of water quality and plankton at different depths can be realized, which helps to understand the water quality and plankton conditions at different depths or the entire monitoring section of the monitoring section, provides support for environmental management, and protects the water ecological environment.

[0048] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention.

[0049] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fixed-point stratified sampling device for water quality and plankton, characterized in that, It includes a float, a balance rod, a sampling tube, a steel wire rope, a water pump, a sampling bottle and a water inlet control ring; There are multiple balancing rods, which are respectively installed on multiple sides of the float; The sampling tube is installed in the middle of the float and is fixed by a clamping ring arranged on the sampling tube; The side of the sampling tube is provided with a plurality of water inlets one in sequence, and a water inlet control ring is rotatably arranged on the sampling tube, and when the water inlet control ring is rotated, the relative position with the water inlet one is adjusted to realize the water inlet or sealing process; The steel wire rope is installed on a plurality of balance rods and is used to control the depth of the float and the balance rod; A water pump and a sampling bottle are arranged outside the float to facilitate the liquid extracted from the sampling tube to be discharged outwards; The water inlet control ring is provided with a second water inlet, and a sealing gasket is installed on the side of the second water inlet on the water inlet control ring; An elastic stopper is installed on the sampling tube, and the relative positions of the water inlet 1 and the water inlet 2 are adjusted by rotating the water inlet control ring; A driving shaft is rotatably mounted on the float, and driving teeth are arranged in sequence and staggered on the side of the driving shaft; Wherein, the side surfaces of the plurality of water inlet control rings are sequentially arranged with driven teeth meshing with the driving teeth; The driving shaft is connected to the driving motor installed on the float through a coupling, and is used to adjust the position of the water inlet control ring; The driving motor drives the driving shaft to rotate, and the driving teeth rotate accordingly. When the driving teeth mesh with the driven teeth, the water inlet control ring is driven to deflect along the sampling tube, thereby adjusting the relative position of water inlet two and water inlet one, and the water inlet channel is gradually opened for sampling. When water inlet two and water inlet one completely overlap, the driving teeth and the driven teeth are disengaged, and the water inlet control ring rotates to its original position under the action of the elastic block to restore the deformation, and the water inlet channel is completely closed. At this time, the driving teeth and the driven teeth corresponding to the depth of the upper layer enter into a meshing state. By continuing the above process, when the driving shaft rotates one circle, the driving teeth mesh with the driven teeth in sequence from bottom to top, thereby driving the water inlet control rings at different positions to deflect along the sampling tube in sequence, so that water bodies at different depths enter the sampling tube in sequence from bottom to top for collection.

2. The fixed-point stratified sampling device for water quality and plankton according to claim 1, characterized in that, The water inlets are arranged on the sampling tube at equal intervals, and the distance between adjacent water inlets is 50 cm.

3. The fixed-point stratified sampling device for water quality and plankton according to claim 1, characterized in that, The water pump is connected to the sampling bottle via a second infusion tube; An adapter is installed at the top of the sampling tube, and the adapter is connected to the water pump through an infusion tube.

4. A fixed-point stratified sampling device for water quality and plankton according to claim 1, characterized in that, The float and the balance rod are both made of PVC.

5. A fixed-point stratified sampling device for water quality and plankton according to claim 1, characterized in that, The sampling tube is made of organic glass.

Images