Fixed-point stratified sampling device for water quality and plankton

Abstract

The invention relates to a water quality and plankton sampler, and provides a water quality and plankton fixed-point stratified sampling device which comprises a floater, a balance rod, a sampling pipe, a steel wire lifting rope, a water suction pump, a sampling bottle and a water inlet control ring, the balance rod is installed on the side face of the floater, the sampling pipe is installed in the middle of the floater, and the water inlet control ring is rotationally arranged on the sampling pipe; under the condition that the water inlet control ring is rotated, the water inlet or closing process is achieved, the steel wire lifting rope is installed on the balance rod, and the water suction pump and the sampling bottle are arranged on the outer side of the floater so that liquid extracted by the sampling pipe can be guided out conveniently; accurate depth sample collection can be realized by adjusting the length of the sampling pipe and controlling the water inlet control ring, and the water inlet control ring is controlled, so that collection of water quality and plankton mixed samples at different depths is realized, different depths of a monitoring section or the water quality and plankton conditions of the whole monitoring section can be known, and the monitoring accuracy is improved. Support is provided for environment management, and the water ecological environment is protected.

Description

Technical Field

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

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

[0003] At the same time, due to solar radiation and the physical and chemical properties of water, the water temperature of lakes and reservoirs shows obvious seasonal stratification along the water depth. The surface water temperature of stratified lakes and reservoirs is significantly higher than that of the middle and lower layers, causing the layered distribution of dissolved oxygen, nitrate, nitrogen, phosphorus and other plasma, which in turn leads to differences in the types and density of plankton in the lower water body. For the collection of plankton, sampling only in the middle and upper layers is not enough, and it cannot fully reflect the distribution of plankton in the water body.

[0004] The current water quality sampling is to collect water quality samples on a vertical line using various samplers. Qualitative plankton samples are taken using a No. 25 plankton net with an aperture of about 0.064mm and dragged in an "∞" shape at an appropriate speed for 1-3 minutes at about 0.5m below the water surface. Quantitative plankton collection uses a plastic bottle of a certain volume, which is directly filled with water at the sampling point. Regardless of water quality or plankton collection, only one level of samples can be collected each time. If samples of different depths of the water body need to be obtained, multiple samplings at different levels of the same area will inevitably disturb the plankton and the water layer, resulting in inaccurate sampling results at different levels. At the same time, existing samplers cannot accurately collect 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, so as to achieve accurate sampling of different stratified areas of the water body, meet the needs of environmental monitoring and scientific research, and aim to solve the problems existing in the above-mentioned background technology.

[0006] The embodiment of the present invention is implemented as follows: a fixed-point stratified sampling device for water quality and plankton, including a float, a balance rod, a sampling tube, a wire rope, a water pump, a sampling bottle and a water inlet control ring:

[0007] There are multiple balancing rods, which are respectively installed on multiple sides of the float;

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

[0009] A plurality of water inlets 1 are sequentially opened on the side of the sampling tube, 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 1 is adjusted to realize the water inlet or sealing process;

[0010] 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;

[0011] A water pump and a sampling bottle are arranged outside the float to facilitate the liquid extracted by the sampling tube to be discharged outwards.

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

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

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

[0015] Preferably, 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;

[0016] Wherein, the side surfaces of the plurality of water inlet control rings are sequentially arranged with driven teeth meshing with the driving teeth;

[0017] 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.

[0018] Preferably, the water pump is connected to the sampling bottle via a second infusion tube;

[0019] An adapter is installed at the top of the sampling tube, and the adapter is connected to the water pump through an infusion tube.

[0020] Preferably, the float and the balance rod are both made of PVC.

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

[0022] A fixed-point stratified sampling device for water quality and plankton provided in an embodiment of the present invention can perform fixed-point stratified sampling of water quality and plankton samples in rivers, lakes and reservoirs, and collect accurate depth samples by adjusting the length of the sampling tube and controlling the water inlet control ring; at the same time, the collection of mixed samples of water quality and plankton at different depths can be achieved by controlling the water inlet control ring, which helps to understand the water quality and plankton conditions at different depths of the monitoring section or the entire monitoring section, provide support for environmental management, and protect the water ecological environment. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0025] Figure 3 for Figure 1 A partial enlarged view of the middle part;

[0026] Figure 4 A schematic diagram of the structure of a water inlet control ring controlling 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 It is a schematic diagram of the structure of a fixed-point stratified sampling device for water quality and plankton provided by an embodiment of the present invention when a water inlet control ring controls no water inlet;

[0028] In the attached figure: 1-float; 2-balance bar; 3-sampling tube; 4-wire rope; 5-water pump; 6-sampling bottle; 7-infusion tube one; 8-infusion tube two; 9-water inlet one; 10-water inlet control ring; 11-water inlet two; 12-sealing gasket; 13-clamping ring; 14-driving shaft; 15-driving gear; 16-driven gear; 17-driving motor; 18-elastic stopper; 19-adapter. DETAILED DESCRIPTION

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

[0030] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0031] like Figures 1 to 5As shown, 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, comprising a float 1, a balance bar 2, a sampling tube 3, a wire rope 4, a water pump 5, a sampling bottle 6 and a water inlet control ring 10: the balance bar 2 is provided with a plurality of balance bars 2, and the balance bars 2 are respectively installed on a plurality of side surfaces of the float 1; the sampling tube 3 is installed in the middle of the float 1 and is fixed by a clamping ring 13 arranged on the sampling tube 3; a plurality of water inlets 9 are sequentially opened on the side surface 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 water inlet 9 is adjusted to realize the water inlet or sealing process; the wire rope 4 is installed on a plurality of balance bars 2, and is used to control the depth of the float 1 and the balance bar 2; a water pump 5 and a sampling bottle 6 are arranged on the outside of the float 1, so as to facilitate the outward discharge of the liquid extracted by the sampling tube 3.

[0032] The present application provides a fixed-point stratified sampling device for water quality and plankton, which can perform fixed-point stratified sampling of water quality and plankton samples in rivers, lakes and reservoirs, and collect 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 achieved, which helps to understand the water quality and plankton conditions at different depths of the monitoring section or the entire monitoring section, provide support for environmental management, and protect 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, the float 1 and the balance bar 2 are both made of PVC, and the sampling tube 3 is made of organic glass.

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

[0035] In one embodiment of the present invention, multiple water inlets 9 are arranged on the same side of the sampling tube 3, and it is necessary to ensure that the axes of the water inlets 9 remain parallel so as to cooperate with the water inlet control ring 10 to adjust the depth of the water inlet.

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

[0037] The sampling tube 3 is provided with an elastic stopper 18 , and the relative positions of the water inlet 1 9 and the water inlet 2 11 are adjusted when the water inlet control ring 10 is rotated.

[0038] In one embodiment of the present invention, when the water inlet 2 11 provided on the water inlet control ring 10 overlaps with the water inlet 1 9 provided on the sampling tube 3, the water inlet state is reached, as shown in the accompanying drawings of the specification. Figure 4 As shown, however, when the water inlet control ring 10 is deflected along the sampling tube 3 by force, the water inlet 2 11 and the water inlet 1 9 are in a staggered state, and water inlet stops.

[0039] like Figure 1 and Figure 3 As shown, as another preferred embodiment of the present invention, a driving shaft 14 is rotatably mounted on the float 1, and driving teeth 15 are sequentially staggeredly arranged on the side of the driving shaft 14;

[0040] The side surfaces of the plurality of water inlet control rings 10 are sequentially arranged with driven teeth 16 meshing with the driving teeth 15;

[0041] The driving shaft 14 is connected to a driving 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 one embodiment 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 the water inlet control rings 10 arranged is 4, since the driving tooth portions 15 are meshed with the driven tooth portions 16, the driving tooth portions 15 also need to be arranged in 4, and the spacing between adjacent driving tooth portions 15 is equal to the spacing between adjacent water inlets 9. In the case where the driving tooth portions 15 are arranged in a staggered manner, it can be known that the angle between adjacent driving tooth portions 15 is 90°. By analogy, when the number of the water inlet control rings 10 and the driven tooth portions 16 arranged is 6, the angle between adjacent driving tooth portions 15 is 60°.

[0043] In actual use, the driving motor 17 drives the driving shaft 14 at the bottom to rotate through the coupling. In the initial state, the driving tooth portion 15 at the bottom of the driving shaft 14 is meshed with the lowest driven tooth portion 16, and drives the driven tooth portion 16 and the water inlet control ring 10 to deflect along the sampling tube 3 when the driving tooth portion 15 rotates. During the rotation process, the elastic stopper 18 is elastically deformed by force. When the driving tooth portion 15 rotates to 90°, the water inlet 11 overlaps with the water inlet 19, and the water flows from the outside along the water inlet 11 in sequence. When the second set of driving teeth 15 and the driven teeth 16 enter the sampling tube 3 and continue to rotate the driving shaft 14 between 90° and 180°, the lowest driving teeth 15 and the driven teeth 16 are disengaged, and the elastic stopper 18 recovers its deformation, so that the lowest water inlet channel is closed. However, the second set of driving teeth 15 and the driven teeth 16 from bottom to top enter into a meshing state, thereby controlling the opening of a water inlet channel at another depth. By continuing the above process, the water inlet sampling work of multiple water inlets 9 can be realized when the driving shaft 14 rotates one circle.

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

[0045] An adapter 19 is installed at the top of the sampling tube 3, and the adapter 19 is connected to the water pump 5 through an infusion tube 7.

[0046] In one embodiment of the present invention, after sampling in the sampling tube 3 is completed, the water flow can flow from the sampling tube 3 along the adapter 19, the infusion tube 1 7 and the infusion tube 2 8 in sequence while the water pump 5 is working, and finally delivered to the sampling bottle 6.

[0047] In summary, the operation process is as follows: before placing the sampling device into the water body, according to the depth of the sample to be collected, the 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 clamp ring 13 on the sampling tube 3, the water pump 5 is connected, and a sampling bottle 6 is prepared at one end of the water pump 5. The sampling device is placed in the water body, and the drive shaft 14 is driven to rotate synchronously by the set drive motor 17, and the drive gear portion 15 rotates accordingly. Since the drive gear portion 15 is meshed with the driven gear portion 16, the water inlet control rings 10 at multiple positions can be driven one by one to rotate along the sampling tube 3 during the rotation of the drive shaft 14. Turn, adjust the relative position of water inlet 2 11 and water inlet 1 9, so that water at different depths can enter the sampling tube 3 from bottom to top in sequence, and start the water pump 5 to collect samples at different depths one by one; therefore, the present application can perform fixed-point stratified sampling of 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, the collection of mixed samples of water quality and plankton at different depths can be realized by controlling the water inlet control ring 10, which is helpful to understand the water quality and plankton conditions at different depths of the monitoring section or the entire monitoring section, provide support for environmental management, and protect the water ecological environment.

[0048] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0049] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes 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: Includes float, balance rod, sampling tube, wire rope, water pump, sampling bottle and 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; A plurality of water inlets 1 are sequentially opened on the side of the sampling tube, 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 1 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 by the sampling tube to be discharged outwards.

2. A 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. A fixed-point stratified sampling device for water quality and plankton according to claim 1, characterized in that: 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 first water inlet and the second water inlet are adjusted when the water inlet control ring is rotated.

4. A fixed-point stratified sampling device for water quality and plankton according to claim 1, characterized in that: 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.

5. A 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.

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

7. 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.

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