Water quality monitoring stratified sampling device

Abstract

The utility model discloses a water quality monitoring stratified sampling device which comprises a lifting rope, a plurality of sampling barrels are fixedly arranged at the lower end of the lifting rope, a sealing cover is movably arranged at the upper end of each sampling barrel in a screwed mode through threads, a sampling mechanism used for sampling is arranged in the middle of each sealing cover, and each sampling mechanism comprises a sampling flow channel, a first spring and a sealing ball. A sampling flow channel is fixedly arranged in the middle of the inner side of the sealing cover, a first spring is arranged at the lower end in the sampling flow channel, a sealing ball is movably clamped in the sampling flow channel at the first spring, and a sealing mechanism for further sealing the sampling flow channel is arranged at the lower end in the sampling barrel. The automatic layered water sampling device is good in using effect, can automatically perform layered water sampling by utilizing different water pressures, does not need any electric control system, and is simple in structure, convenient to use, low in cost and convenient to popularize and use.

Description

Technical Field

[0001] This utility model relates to the field of water quality sampling technology, specifically a water quality monitoring stratified sampling device. Background Technology

[0002] In existing technologies for water quality monitoring, water sampling is a very common step. However, when existing sampling devices require stratified sampling of water bodies, such as the stratified water quality monitoring sampling device described in Chinese Patent Application No. 202010579125.X, this device utilizes multiple sampling chambers to sample multiple water bodies at once. However, the entire device relies on electrical control equipment such as motors, which raises issues related to electrical control and power supply. This results in a simple yet complex overall structure, high cost, and difficulty in widespread adoption. Therefore, an improved stratified water quality monitoring sampling device is needed to address this problem. Utility Model Content

[0003] The purpose of this invention is to provide a water quality monitoring stratified sampling device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a water quality monitoring stratified sampling device, including a suspension rope, with several sampling buckets fixedly installed at the lower end of the suspension rope. A sealing cap is screwed onto the upper end of each sampling bucket via a threaded connection. A sampling mechanism for sampling is provided in the middle of the sealing cap. The sampling mechanism includes a sampling channel, a first spring, and a sealing ball. A sampling channel is fixedly installed in the middle of the inner side of the sealing cap. A first spring is installed at the lower end of the sampling channel. A sealing ball is movably engaged with the first spring inside the sampling channel. A sealing mechanism for further sealing the sampling channel is provided at the lower end of the sampling bucket.

[0005] Preferably, the sealing mechanism includes a column, a float, a second spring, a magnetic ring, and a sealing plug. A column is fixedly installed in the middle of the inner side of the sampling bucket. A float is movably sleeved on the middle of the surface of the column. A second spring is movably sleeved on the surface of the column at the lower end of the float. A magnetic ring is fixedly installed at the upper end of the float. A sealing plug is fixedly installed at the upper end of the magnetic ring. The sealing mechanism can further seal the sampling channel after the water sample is collected, thereby preventing water from continuing to enter the sampling bucket.

[0006] Preferably, the central part of the column surface is covered with sheet metal. The sheet metal is attracted by the magnetic ring, which can balance the elastic force of the second spring. When water enters the sampling bucket, the water gradually submerges the float, causing the float to generate buoyancy. At this time, the elastic force of the second spring and the buoyancy of the float overcome the attraction of the sheet metal attracted by the magnetic ring, causing the second spring to immediately spring up. This causes the float and the sealing plug to move upward quickly, and finally the sealing plug is inserted into the sealing channel, thus automatically sealing the sealing channel. This prevents the sealing ball from being stuck by debris during sampling, which would prevent the first spring and sealing ball from springing back to their original positions. This would cause water samples from other depths to enter the sampling bucket when it is pulled out of the water, thus improving the sampling effect of the device. After each sampling, the sealing cover is opened to pour out the sampled water inside the sampling bucket. This allows the float to move downward, compressing the second spring, and the sheet metal attracted by the magnetic ring can be used to re-fix the float.

[0007] Preferably, a limiting block is fixedly provided at the upper end of the column to prevent the float from falling off the column.

[0008] Preferably, a counterweight is fixedly provided at the lower end of the sampling bucket. The counterweight can ensure that the sampling bucket can quickly sink into the water body to be sampled, and prevent the sampling bucket from floating and being unable to sink.

[0009] Preferably, the spring force increases sequentially from top to bottom, which ensures that multiple sampling buckets can obtain different sampling pressure thresholds. The sampling pressure of the bottommost storage bucket is the greatest. After being submerged in water, the first spring inside the bottommost sampling bucket has the greatest elasticity. It requires the water pressure after being submerged to a depth of 15 meters to compress the first spring and cause it to contract, so that the sealing ball no longer seals the sampling channel. This allows sampling to be performed on a water layer up to 15 meters deep.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. This utility model can automatically collect water samples in layers by utilizing different water pressures, and does not require any electrical control system. This makes the device simple in structure, easy to use, and low in cost, making it easy to promote and use. It is also easy to operate; simply drop the sampling bucket into the predetermined depth and the water pressure will automatically collect the sample.

[0012] 2. During sampling, the water inside the sampling bucket gradually submerges the float, causing it to buoy. At this time, the spring force of the second spring and the buoyancy of the float overcome the attraction of the magnetic ring to the iron sheet, causing the second spring to spring up immediately. This causes the float and the sealing plug to move upwards quickly, eventually allowing the sealing plug to insert into the sealing channel, thus automatically sealing the channel. This prevents the sealing ball from being stuck by debris during sampling, which would prevent the first spring and sealing ball from springing back to their original positions. In such cases, water samples from other depths would enter the sampling bucket when it is pulled out of the water. This improves the sampling effect of the device. After each sampling, opening the sealing cap and emptying the water from the sampling bucket allows the float to move downwards, compressing the second spring. The magnetic ring then uses its attraction to the iron sheet to re-secure the float. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the water quality monitoring stratified sampling device of this utility model;

[0014] Figure 2 This is a cross-sectional view of the water quality monitoring stratified sampling device of this utility model;

[0015] Figure 3 This is an upward view of the float in the stratified sampling device for water quality monitoring of this utility model;

[0016] Figure 4 This utility model relates to a stratified sampling device for water quality monitoring. Figure 2 A magnified view of point A in the middle.

[0017] In the diagram: 1. Suspension rope; 2. Sampling bucket; 3. Sealing cap; 4. Sampling channel; 5. First spring; 6. Sealing ball; 7. Column; 8. Float; 9. Second spring; 10. Magnetic ring; 11. Sealing plug; 12. Sheet metal; 13. Limiting block; 14. Counterweight. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-4This utility model provides a technical solution: a water quality monitoring stratified sampling device, including a suspension rope 1, a plurality of sampling buckets 2 fixedly installed at the lower end of the suspension rope 1, a sealing cover 3 being screwed onto the upper end of the sampling bucket 2, a sampling mechanism for sampling being provided in the middle of the sealing cover 3, the sampling mechanism including a sampling channel 4, a first spring 5, and a sealing ball 6, a sampling channel 4 being fixedly installed in the middle of the inner side of the sealing cover 3, a first spring 5 being provided at the lower end of the inner side of the sampling channel 4, a sealing ball 6 being movably engaged with the first spring 5 inside the sampling channel 4, and a sealing mechanism for further sealing the sampling channel 4 being provided at the lower end of the inner side of the sampling bucket 2.

[0020] The sealing mechanism includes a column 7, a float 8, a second spring 9, a magnetic ring 10, and a sealing plug 11. The column 7 is fixedly installed in the middle of the inner side of the sampling bucket 2. The float 8 is movably sleeved in the middle of the surface of the column 7. The second spring 9 is movably sleeved in the lower end of the float 8 on the surface of the column 7. The magnetic ring 10 is fixedly installed in the upper end of the float 8. The sealing plug 11 is fixedly installed in the upper end of the magnetic ring 10. The sealing mechanism can further seal the sampling channel 4 after the water sample is taken, thereby preventing water from continuing to enter the interior of the sampling bucket 2.

[0021] The central part of the surface of the column 7 is covered with sheet metal 12. The magnetic ring 10 attracts this sheet metal 12, balancing the elastic force of the second spring 9. When water enters the sampling bucket 2, the water gradually submerges the float 8, causing buoyancy in the float 8. At this time, the elastic force of the second spring 9 and the buoyancy of the float 8 overcome the attraction of the magnetic ring 10 to the sheet metal 12, causing the second spring 9 to immediately spring up. This causes the float 8 and the sealing plug 11 to move rapidly upwards, ultimately allowing the sealing plug 11 to insert into the sealed flow channel. This automatically seals the flow channel, preventing the sealing ball 6 from getting stuck with debris during sampling. This would prevent the first spring 5 and the sealing ball 6 from springing back to their original positions, thus preventing water samples from other depths from entering the sampling bucket 2 when it is pulled out of the water. This improves the sampling effect of the device. After each sampling, opening the sealing cover and emptying the sampled water from the sampling bucket 2 will push the float down to compress the second spring, and the magnetic ring 10 can be used to attract the iron sheet 12 to re-fix the float 8.

[0022] A limiting block 13 is fixedly installed at the upper end of the column 7, which can prevent the float from falling off the column 7.

[0023] A counterweight 14 is fixedly installed at the lower end of the sampling bucket 2. The counterweight 14 can ensure that the sampling bucket 2 can quickly sink into the water body to be sampled, and prevent the sampling bucket 2 from floating and being unable to sink.

[0024] The spring 5 increases in elasticity from top to bottom, ensuring that multiple sampling buckets 2 can obtain different sampling pressure thresholds. The sampling pressure of the bottommost storage bucket is the highest. After being submerged in water, the spring 5 inside the bottommost sampling bucket 2 has the highest elasticity. It needs to be submerged to a depth of 15 meters to compress the spring 5 and cause the sealing ball 6 to stop sealing the sampling channel 4. This allows sampling of a water layer 15 meters deep. The other sampling bucket 2 can be set to compress the spring 5 with a water pressure of 10 meters. The spacing between the sampling buckets 2 should also be 5 meters. When the device is submerged in water at once, the upper sampling bucket 2 is at a depth of 10 meters and the lower sampling bucket 2 is at a depth of 15 meters. By utilizing the different water pressures, stratified water sampling can be automatically performed without any electrical control system. This makes the device simple in structure, easy to use, and low in cost, making it easy to promote and use.

[0025] Working principle: When using this device for sampling, hold the suspension rope 1 and then drop multiple sampling buckets 2 directly into the water body to be sampled. At this time, the sampling pressure of the lowest storage bucket is the greatest. After being submerged in water, the first spring 5 inside the lowest sampling bucket 2 has the greatest elasticity. It takes the water pressure of a depth of 15 meters to compress the first spring 5, thereby causing the sealing ball 6 to no longer seal the sampling channel 4. Then, water at this depth can flow into the sampling bucket 2 through the sampling channel 4, thus sampling a water layer up to 15 meters deep. Each sampling bucket 2 can be set to compress the first spring 5 with a water pressure of 10 meters, and the corresponding spacing between sampling buckets 2 should also be 5 meters. In this way, when the device is submerged in water at once, the upper sampling bucket 2 will be at a depth of 10 meters, and the lower sampling bucket 2 will be at a depth of 15 meters. By utilizing the difference in water pressure, stratified water samples can be automatically collected without any electrical control system. This makes the device simple in structure, easy to use, and low in cost, making it easy to promote and use. It should be noted that after the sampling bucket 2 is submerged to the predetermined depth, the hoisting rope 1 should be held tightly to stop the sampling bucket 2 from sinking further.

[0026] Furthermore, during sampling, the water inside the sampling bucket 2 gradually submerges the float 8, causing the float 8 to generate buoyancy. At this time, the elasticity of the second spring 9 and the buoyancy of the float 8 overcome the attraction of the magnetic ring 10 to the iron sheet 12, causing the second spring 9 to immediately spring up. This causes the float 8 and the sealing plug 11 to move upwards rapidly, eventually allowing the sealing plug 11 to be inserted into the sealed flow channel. This automatically seals the flow channel, preventing the sealing ball 6 from being stuck by debris during sampling. This prevents the first spring 5 and the sealing ball 6 from springing up and resetting, which would cause water samples from other depths to enter the sampling bucket 2 when it is pulled out of the water surface. This improves the sampling effect of the device. After each sampling, opening the sealing cover and emptying the sampled water inside the sampling bucket 2 pushes the float down to compress the second spring, and the magnetic ring 10 can be used to re-fix the float 8 by attracting the iron sheet 12.

[0027] Furthermore, since the first spring 5 is inside the sealing cover 3, when it is necessary to use a first spring 5 with different elasticity, it is only necessary to replace the sealing cover 3 to obtain a first spring 5 with different springs, thereby changing the trigger sampling depth threshold of the sampling bucket 2.

[0028] It should be noted that only two sampling barrels 2 are shown in the figure for illustration purposes. In practice, multiple sampling barrels 2 can be set up at intervals as needed. In this case, the elastic force of the first spring 5 should be increased from top to bottom. This allows the device to perform more detailed water quality monitoring and stratified sampling. In order to ensure the accuracy of sampling, there needs to be a significant difference in water pressure between the stratified samples. Therefore, the sampling barrels 2 of this device should not be too close together and should be at least two meters apart.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water quality monitoring stratified sampling device, comprising a suspension rope (1), characterized in that: A number of sampling buckets (2) are fixedly installed at the lower end of the suspension rope (1). A sealing cover (3) is screwed onto the upper end of the sampling bucket (2) by means of a thread. A sampling mechanism for sampling is provided in the middle of the sealing cover (3). The sampling mechanism includes a sampling channel (4), a first spring (5), and a sealing ball (6). A sampling channel (4) is fixedly installed in the middle of the inner side of the sealing cover (3). A first spring (5) is installed at the lower end of the sampling channel (4). A sealing ball (6) is installed inside the sampling channel (4) and engaged with the first spring (5). A sealing mechanism for further sealing the sampling channel (4) is provided at the lower end of the sampling bucket (2).

2. The water quality monitoring stratified sampling device according to claim 1, characterized in that: The sealing mechanism includes a column (7), a float (8), a second spring (9), a magnetic ring (10), and a sealing plug (11). The column (7) is fixedly installed in the middle of the inner side of the sampling barrel (2). The float (8) is movably sleeved in the middle of the surface of the column (7). The second spring (9) is movably sleeved in the lower end of the float (8) on the surface of the column (7). The magnetic ring (10) is fixedly installed in the upper end of the float (8). The sealing plug (11) is fixedly installed in the upper end of the magnetic ring (10).

3. The water quality monitoring stratified sampling device according to claim 2, characterized in that: The central part of the surface of the column (7) is covered with sheet metal (12).

4. The water quality monitoring stratified sampling device according to claim 2, characterized in that: A limit block (13) is fixedly installed at the upper end of the column (7).

5. The water quality monitoring stratified sampling device according to claim 1, characterized in that: A counterweight (14) is fixedly installed at the lower end of the sampling bucket (2).

6. The water quality monitoring stratified sampling device according to claim 1, characterized in that: The elastic force of the first spring (5) increases sequentially from top to bottom.

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