An ecological environment water quality detection sampling device and its sampling method

Abstract

The present invention relates to the field of water quality detection sampling, and discloses an ecological environment water quality detection sampling device, comprising: a sampling tube, a connecting block, a water outlet pipe and a blocking component. A water inlet hole is formed in the side wall of the sampling tube, and a pulling rope is connected to the top of the sampling tube; the connecting block is connected to the top of the sampling tube, the connecting block is located inside the sampling tube, a first cavity is formed at one end of the connecting block away from the top of the sampling tube, and a groove is formed at one end of the connecting block close to the side wall of the sampling tube, and the top of the groove communicates with the water inlet hole; the water outlet pipe penetrates through the bottom of the first cavity; the blocking component includes: a baffle plate, a telescopic component, a water level switch, a power supply and a processor. The telescopic component is connected to the top of the first cavity, one side of the baffle plate is connected to the telescopic component, the other side of the baffle plate abuts against the water outlet pipe, the water level switch is connected to the telescopic component, and the processor is connected to the power supply, the water level switch and the telescopic component. The water sample taken by this device is not easily mixed with the upper water sample, making the sampling more accurate and the detection result of the water quality more precise.

Description

Technical Field

[0001] The present invention relates to the field of water quality detection sampling, and particularly to an ecological environment water quality detection sampling device and a sampling method thereof. Background Art

[0002] Qinghai Lake is an important water source conservation area and a water vapor circulation channel in the western part of China. It is an important water body maintaining the ecological security of the Qinghai-Tibet Plateau, a natural barrier preventing the eastward spread of western desertification, and also the last barrier protecting the ecological security of the Hehuang Valley, the most economically developed area in Qinghai Province. Focusing on the trinity core of "water resources - water environment - water ecology", by carrying out research on the temporal and spatial variation laws of water quality, sediment water ecology during the ice-bound period and non-ice-bound period, and investigating point sources, non-point sources and endogenous pollution, the background baseline value range of water environment pollutants in Qinghai Lake is determined, the characteristics and sources of pollutants are discriminated, the response relationship between water quality and water quantity over the years is studied, the water environment problems in the basin are diagnosed, providing important basic data support for the implementation of the water quality improvement and treatment plan in the Qinghai Lake Basin in the next stage, and providing a scientific basis for improving water environment quality and maintaining regional ecological security. The water quality detection of Qinghai Lake is an essential link. The sampling depth of lake water is generally 10 - 20 cm below the lake surface, and the detection results of the water at this depth are more accurate.

[0003] The existing water quality detection sampling devices for lakes usually include a sampling tube with an opening at the top and a pull rope connected to the sampling tube. During sampling, by lowering the pull rope, the sampling tube sinks to the determined sampling depth, water flows into the sampling tube from the top of the sampling tube. After the water sample collection is completed, the sampling tube is lifted out by the pull rope. During this process, because the top of the sampling tube is always open, it is easy to mix in the upper water sample when the sampling tube is lifted out of the water after the sample is collected, which affects the water quality and cannot accurately reflect the true water quality at this depth, resulting in inaccurate detection results. Summary of the Invention

[0004] In order to solve the above technical problems, the present disclosure provides an ecological environment water quality detection sampling device and a sampling method thereof, such that after the water sample collection is completed, it is not easy to mix in the upper water sample, making the sampling more accurate and the detection results of the water quality more precise.

[0005] The present disclosure provides an ecological environment water quality detection and sampling device, including: a sampling tube, a connecting block, a water outlet pipe, and a blocking component. Both ends of the sampling tube are closed, and a water inlet hole is opened on the side wall of the sampling tube. A pulling rope is connected to the top of the sampling tube; the connecting block is connected to the top of the sampling tube and is located inside the sampling tube. A first cavity is opened at one end of the connecting block away from the top of the sampling tube. A groove is opened at one end of the connecting block close to the side wall of the sampling tube. The bottom of the groove communicates with the first cavity, and the top of the groove communicates with the water inlet hole; the water outlet pipe penetrates through the bottom of the first cavity and extends into the first cavity. The length of the water outlet pipe extending into the first cavity is less than the inner diameter of the groove; the blocking component includes: a baffle, a telescopic component, a water level switch, a power supply, and a processor. The telescopic component is connected to the top of the first cavity. One side of the baffle is connected to the telescopic component, and the other side of the baffle abuts against the water outlet pipe. The water level switch is connected to the telescopic component. The processor is connected to the power supply, the water level switch, and the telescopic component, so that after the water level reaches a preset value, the processor controls the telescopic component to extend or shorten.

[0006] Optionally, a second cavity is provided inside the connecting block. The second cavity is located on the side of the first cavity close to the top of the sampling tube. The telescopic component includes: an electromagnetic coil, a spring, and a metal rod. The electromagnetic coil is connected to the top of the second cavity. The spring is located inside the electromagnetic coil. One end of the metal rod abuts against the spring, and the other end of the metal rod penetrates through the second cavity and extends into the first cavity to be connected to the baffle. The water level switch is connected to the electromagnetic coil.

[0007] Optionally, the baffle is a plastic disc, and the plastic disc is connected to the metal rod.

[0008] Optionally, there is a rubber valve between the water outlet pipe and the baffle.

[0009] Optionally, the inner diameter of the end of the groove away from the water outlet pipe is larger than the inner diameter of the end close to the water outlet pipe.

[0010] Optionally, a slope is provided at the end of the groove close to the water inlet pipe.

[0011] Optionally, the distance from the bottom of the groove to the water inlet hole is less than the distance from the water outlet pipe to the water inlet hole.

[0012] Optionally, a filter screen is connected at the water inlet hole.

[0013] Optionally, waterproof components are provided for the connections between the power supply, the processor, the electromagnetic coil, and the water level switch.

[0014] An ecological environment water quality detection and sampling device includes the following steps:

[0015] Lower the sampling tube to the sampling point in the lake using the pulling rope;

[0016] Turn on the power supply. The processor controls the telescopic component to shorten, the baffle leaves the water outlet pipe, and sampling starts;

[0017] After the sampled water reaches the preset water level in the sampling tube, the water level switch transmits a signal to the processor, and the processor controls the telescopic component to extend, and the baffle blocks the water outlet pipe;

[0018] The sampling tube is pulled up by the pulling rope to complete the sampling.

[0019] The technical solution provided by the embodiment of the present disclosure has the following advantages compared with the prior art:

[0020] An ecological environment water quality detection sampling device provided by an embodiment of the present disclosure includes: a sampling tube, a connection block, a water outlet pipe, and a blocking component. The blocking component includes a baffle, a telescopic component, a water level switch, a power supply, and a processor. Before sampling, the baffle blocks the water outlet pipe so that no water enters the sampling tube. After the sampling tube reaches the sampling point, the power supply is turned on, and the controller controls the telescopic component to contract, and the baffle leaves the water outlet pipe, and the water sample enters the sampling tube. When the water sample reaches the preset water level in the sampling tube, the water level switch transmits a signal to the processor, and the processor controls the telescopic component to extend, and the baffle blocks the water outlet pipe, and then the sampling tube is lifted by the pulling rope to complete the sampling. During this sampling process, before sampling, when the sampling tube is lowered, and after the water sample collection is completed, when the sampling tube is extracted, the baffle blocks the water outlet pipe, so that the collected water sample is not easily mixed with the upper water sample, making the sampling more accurate and the detection result of the water quality more precise. Description of the Drawings

[0021] Figure 1 It is a cross-sectional view of an ecological environment water quality detection sampling device provided by an embodiment of the present disclosure during sampling;

[0022] Figure 2 For Figure 1 The enlarged view of the local structure of area A in

[0023] Figure 3 It is a cross-sectional view of an ecological environment water quality detection sampling device provided by an embodiment of the present disclosure when not sampling;

[0024] Figure 4 For Figure 3 The enlarged view of the local structure of area B in

[0025] Description of the Reference Numerals:

[0026] 1. Sampling tube; 10. Water inlet hole; 2. Pulling rope; 3. Connection block; 30. First cavity; 31. Groove; 32. Second cavity; 4. Water outlet pipe; 5. Blocking component; 50. Baffle; 51. Telescopic component; 510. Electromagnetic coil; 512. Spring; 513. Metal rod; 6. Rubber valve. Detailed Embodiment

[0027] The following will describe in detail a specific embodiment of the present invention in conjunction with the accompanying drawings. It should be understood that the protection scope of the present invention is not limited by the specific embodiment.

[0028] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the technical solutions of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0029] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0030] In addition, in the description of the present invention, "a plurality of" means two or more than two. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as implying or indicating relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0031] The existing water quality detection and sampling device for lakes generally includes a sampling tube with an opening at the top and a pull rope connected to the sampling tube. During sampling, by lowering the pull rope, the sampling tube sinks to a determined sampling depth, and water flows into the sampling tube from the top of the sampling tube. After the water sample collection is completed, the sampling tube is lifted out by the pull rope. During this process, because the top of the sampling tube is always in an open state, when the sampling tube is lifted out of the water surface after the sample is collected, it is easy to mix in the upper water sample, which affects the water quality and cannot accurately reflect the true water quality at this depth, resulting in inaccurate detection results.

[0032] Therefore, the embodiments of the present disclosure provide an ecological environment water quality detection and sampling device and its sampling method, which can make it not easy to mix in the upper water sample after the water sample collection is completed, making the sampling more accurate and the detection result of the water quality more precise.

[0033] At least one embodiment of the present invention provides an ecological environment water quality detection and sampling device, including: a sampling tube, a connection block, a water outlet pipe, and a blocking component. Both ends of the sampling tube are closed, a water inlet hole is opened on the side wall of the sampling tube, and a pulling rope is connected to the top of the sampling tube; the connection block is connected to the top of the sampling tube, the connection block is located inside the sampling tube, a first cavity is opened at one end of the connection block away from the top of the sampling tube, a groove is opened at one end of the connection block close to the side wall of the sampling tube, the bottom of the groove communicates with the first cavity, and the top of the groove communicates with the water inlet hole; the water outlet pipe penetrates through the bottom of the first cavity and extends into the first cavity, and the length of the water outlet pipe extending into the first cavity is less than the inner diameter of the groove; the blocking component includes: a baffle, a telescopic component, a water level switch, a power supply, and a processor. The telescopic component is connected to the top of the first cavity, one side of the baffle is connected to the telescopic component, the other side of the baffle abuts against the water outlet pipe, the water level switch is connected to the telescopic component, and the processor is connected to the power supply, the water level switch, and the telescopic component, so that after the water level reaches a preset value, the processor controls the telescopic component to extend or contract.

[0034] In the ecological environment water quality detection and sampling device provided by the above-mentioned embodiments of the present disclosure, by setting the sampling tube, the connection block, the water outlet pipe, and the blocking component, the blocking component includes a baffle, a telescopic component, a water level switch, a power supply, and a processor. Before sampling, the baffle blocks the water outlet pipe, so that no water enters the sampling tube. After the sampling tube reaches the sampling point, the power supply is turned on, and the controller controls the telescopic component to contract, the baffle leaves the water outlet pipe, and the water sample enters the sampling tube. When the water level in the sampling tube reaches the preset value, the water level switch transmits a signal to the processor, and the processor controls the telescopic component to extend, the baffle blocks the water outlet pipe, and then the sampling tube is lifted by the pulling rope to complete the sampling. During this sampling process, during the lowering of the sampling tube before sampling and the extraction of the sampling tube after the water sample collection is completed, the baffle blocks the water outlet pipe, so that the collected water sample is not easily mixed with the upper water sample, making the sampling more accurate and the detection result of the water quality more precise.

[0035] The following will illustrate the present disclosure through several specific embodiments. To keep the description clear and concise in the following embodiments of the present disclosure, the detailed description of known functions and known components may be omitted. When any component of the embodiments of the present disclosure appears in more than one drawing, the component may be represented by the same reference numeral in each drawing.

[0036] Refer to Figures 1 to 4 , Figure 1 is a cross-sectional view of an ecological environment water quality detection and sampling device provided by an embodiment of the present disclosure during sampling; Figure 2 is Figure 1 a partial enlarged view of the structure of area A in Figure 3 is a cross-sectional view of an ecological environment water quality detection and sampling device provided by an embodiment of the present disclosure before sampling; Figure 4 is Figure 3Local structure enlarged view of area B in the figure. An embodiment of the present disclosure provides an ecological environment water quality detection sampling device and a sampling method thereof, including: a sampling tube 1, a connecting block 3, a water outlet pipe 4, and a blocking component 5. Both ends of the sampling tube 1 are closed, a water inlet hole 10 is opened on the side wall of the sampling tube 1, and a pulling rope 2 is connected to the top of the sampling tube 1; the connecting block 3 is connected to the top of the sampling tube 1, the connecting block is located inside the sampling tube, a first cavity 30 is opened at one end of the connecting block 3 away from the top of the sampling tube 1, a groove 31 is opened at one end of the connecting block 3 close to the side wall of the sampling tube 1, the bottom of the groove 31 communicates with the first cavity 30, and the top of the groove 31 communicates with the water inlet hole 10; the water outlet pipe 4 penetrates through the bottom of the first cavity 30 and extends into the first cavity 30, and the length of the water outlet pipe 4 extending into the first cavity 30 is less than the inner diameter of the groove 31; the blocking component 5 includes: a baffle 50, a telescopic component 51, a water level switch, a power supply, and a processor. The telescopic component 51 is connected to the top of the first cavity 30, one side of the baffle 50 is connected to the telescopic component 51, the other side of the baffle 50 abuts against the water outlet pipe 4, the water level switch is connected to the telescopic component 51, and the processor is connected to the power supply, the water level switch, and the telescopic component 51, so that after the water level reaches a preset value, the processor controls the telescopic component 51 to extend or contract.

[0037] Before sampling, the baffle 50 blocks the water outlet pipe 4 so that no water can enter the sampling tube 1. After the sampling tube 1 reaches the sampling point, the power supply is turned on, and the controller controls the telescopic component 51 to contract. The baffle 50 leaves the water outlet pipe 4, and the water sample enters the sampling tube 1. When the water level in the sampling tube 1 of the water sample reaches the preset value, the water level switch transmits a signal to the processor, and the processor controls the telescopic component 51 to extend. The baffle 50 blocks the water outlet pipe 4, and then the sampling tube 1 is lifted through the pulling rope 2 to complete the sampling. During this sampling process, during the lowering of the sampling tube 1 before sampling and the extraction process of the sampling tube 1 after the water sample collection is completed, the baffle 50 blocks the water outlet pipe 4, making the collected water sample not easily mixed with the upper water sample, making the sampling more accurate and the detection result of the water quality more precise.

[0038] A second cavity 32 is provided in the connecting block 3. The second cavity 32 is located on the side of the first cavity 30 close to the top of the sampling tube 1. The telescopic component 51 includes: an electromagnetic coil 510, a spring 512, and a metal rod 513. The electromagnetic coil 510 is connected to the top of the second cavity 32. The spring 512 is located inside the electromagnetic coil 510. One end of the metal rod 513 abuts against the spring 512, and the other end of the metal rod 513 penetrates out of the second cavity 32 and extends into the first cavity 30 to be connected to the baffle 50. The water level switch is connected to the electromagnetic coil 510.

[0039] When the sampling tube 1 reaches the sampling point, turn on the power switch. When the electromagnet coil 510 is energized, a magnetic field will be formed, overcoming the elastic force of the spring 512, attracting the metal rod 513 to move upward, causing the baffle 50 to leave the water outlet pipe 4, so that the water sample enters the sampling tube 1. When the water sample reaches the preset water level in the sampling tube 1, the water level switch causes the electromagnet coil 510 to be de-energized, the magnetic field disappears, and under the action of the spring 512 and gravity, the baffle 50 blocks the water outlet pipe 4 again. Lift the sampling tube 1 with the pull rope 2 to complete the sampling. This process is simple, and the collected water sample is not easily mixed with the upper water sample, making the sampling more accurate and the test result of the water quality more precise.

[0040] The baffle 50 is a plastic disc, and the plastic disc is connected to the metal rod 513. When the plastic disc blocks the water outlet pipe 4, the sealing effect is better, further making it difficult for the upper water quality to mix into the sampling tube 1.

[0041] There is a rubber valve 6 between the water outlet pipe 4 and the baffle 50. The rubber valve 6 is generally provided with a vent hole. In the non-energized state, the metal rod 513 is pressed downward by the small spring 512, just pressing on the vent hole of the rubber valve 6, further preventing water flow from entering. In the energized state, the magnetic field generated by the electromagnet coil 510 will overcome the elastic force of the small spring 512, causing the metal rod 513 to move upward, opening the vent hole, and allowing water to enter the sampling tube 1.

[0042] The inner diameter of the end of the groove 31 far from the water outlet pipe 4 is larger than that of the end close to the water outlet pipe 4. Because the water inlet hole 10 is on the side, the speed of water entering the first cavity 30 will not be too fast, causing too much pressure in the first cavity 30.

[0043] One end of the groove 31 far from the water outlet pipe 4 is provided with an inclined surface. Because the water inlet is provided on the side wall of the sampling tube 1, the inclined surface makes it easy for water to enter the groove 31.

[0044] The distance from the bottom of the groove 31 to the water inlet hole 10 is less than the distance from the water outlet pipe 4 to the water inlet hole 10 by 3 - 5 cm. This enables the water sample to enter the sampling tube 1 at an appropriate speed. It will not be too fast to enter the first cavity 30 due to too large a distance, which may cause too much pressure to push the baffle 50 downward and affect the entry of water, nor will it be too slow due to too small a distance, resulting in a slow sampling process.

[0045] A filter screen is connected at the water inlet hole 10. The filter screen can filter out larger impurities, preventing some larger impurities that may exist in the lake from entering and blocking the water outlet pipe 4.

[0046] Waterproof components are provided for the connections between the power supply, the processor, the electromagnet coil 510, and the water level switch. Since the device needs to be energized underwater, it is easily damaged. The waterproof components can extend the service life of the device.

[0047] An ecological environment water quality detection and sampling device, comprising the following steps:

[0048] Lower the sampling tube 1 to the position of the sampling point in the lake with the pulling rope 2;

[0049] Connect the power supply, and the processor controls the telescopic component 51 to shorten, and the baffle 50 leaves the water outlet pipe 4 to start sampling;

[0050] When the sampled water reaches the preset water level in the sampling tube 1, the water level switch transmits a signal to the processor, and the processor controls the telescopic component 51 to extend, and the baffle 50 blocks the water outlet pipe 4;

[0051] Pull up the sampling tube 1 with the pulling rope 2 to complete the sampling.

[0052] The above-disclosed are only several specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. An ecological environment water quality detection sampling device, characterized in that: include: A sampling tube (1) and at least one control component connected to the sampling tube (1), wherein both ends of the sampling tube (1) are closed, a water inlet hole (10) is provided on the side wall of the sampling tube (1), a pull rope (2) is connected to the top of the sampling tube (1), and the control component comprises: A connecting block (3) is connected to the top of the sampling tube (1), the connecting block (3) is located in the sampling tube (1), a first cavity (30) is provided at one end of the connecting block (3) away from the top of the sampling tube (1), a groove (31) is provided at one end of the connecting block (3) close to the side wall of the sampling tube (1), the bottom of the groove (31) is connected to the first cavity (30), and the top of the groove (31) is connected to the water inlet (10); A water outlet pipe (4) is arranged at the bottom of the cavity and extends into the first cavity (30); the length of the water outlet pipe (4) extending into the first cavity (30) is less than the inner diameter of the groove (31); the diameter of one end of the groove (31) away from the water outlet pipe (4) is greater than the inner diameter of one end close to the water outlet pipe (4); and an inclined surface is provided at one end of the groove (31) close to the water inlet pipe; The blocking component (5) comprises a baffle (50), a telescopic component (51), a water level switch, a power supply and a processor, wherein the telescopic component (51) is connected to the top of the first cavity (30), one side of the baffle (50) is connected to the telescopic component (51), and the other side of the baffle (50) is in contact with the water outlet pipe (4), the water level switch is connected to the telescopic component (51), and the processor is connected to the power supply, the water level switch and the telescopic component (51), so that when the water level reaches a preset value, the processor controls the telescopic component (51) to extend or shorten.

2. The ecological environment water quality detection sampling device according to claim 1, characterized in that: A second cavity (32) is provided in the connection block (3), and the second cavity (32) is located on one side of the first cavity (30) close to the top of the sampling tube (1). The telescopic assembly (51) comprises: an electromagnet coil (510), a spring (512) and a metal rod (513). The electromagnet coil (510) is connected to the top of the second cavity (32), the spring (512) is located in the electromagnet coil (510), one end of the metal rod (513) is in contact with the spring (512), and the other end of the metal rod (513) is connected to the baffle (50), and the water level switch is connected to the electromagnet coil (510).

3. The ecological environment water quality detection sampling device as claimed in claim 2, characterized in that: The baffle (50) is a plastic disk, and the plastic disk is connected to the metal rod (513).

4. The ecological environment water quality detection sampling device as claimed in claim 3, characterized in that: A rubber valve (6) is provided between the water outlet pipe (4) and the baffle plate (50).

5. The ecological environment water quality detection sampling device according to claim 1, characterized in that: The distance from the bottom of the groove (31) to the water inlet hole (10) is smaller than the distance from the water outlet pipe (4) to the water inlet hole (10).

6. The ecological environment water quality detection sampling device according to claim 1, characterized in that: The water inlet (10) is connected to a filter screen.

7. The ecological environment water quality detection sampling device as claimed in claim 2, characterized in that: Waterproof components are provided at the connections between the power supply, the processor, the electromagnet coil (510) and the water level switch.

8. A sampling method for ecological environment water quality detection, using an ecological environment water quality detection sampling device according to any one of claims 1 to 7, characterized in that: The following steps are involved: Using a pull rope (2), lower the sampling tube (1) to the sampling point in the lake; When the power is turned on, the processor controls the telescopic assembly (51) to shorten, and the baffle (50) leaves the water outlet pipe (4), and sampling begins; When the sampled water reaches a preset water level in the sampling pipe (1), the water level switch transmits a signal to the processor, and the processor controls the telescopic component (51) to extend, and the baffle (50) blocks the water outlet pipe (4); The sampling tube (1) is pulled upward by the pull rope (2) to complete the sampling.

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