Sulfide detection system

Abstract

The invention belongs to the technical field of water detection, and particularly relates to a sulfide detection system.The sulfide detection system comprises a shell assembly and a detection assembly, the shell assembly is used for protecting all parts in the shell assembly, so that all the parts can work normally and stably, and the detection assembly is arranged in the shell assembly; the detection assembly can be used for effectively sampling water bodies in different water areas of the same aquaculture water body, so that the situation that the sampled water areas are relatively fixed in position, so that the sampled samples cannot be summarized in the whole water area is avoided; the problem that the water quality judgment by workers is easy to make mistakes due to the fact that the water quality monitoring station is installed beside a river is solved, and after water sampling is completed, the workers place the sampled water into an existing water quality monitoring station installed beside the river to detect the water.

Description

Technical Field

[0001] This invention belongs to the field of water body detection technology, specifically a sulfide detection system. Background Technology

[0002] Sulfides are commonly found in water bodies. They are produced by the reduction of sulfates by bacteria or by the decomposition of sulfur organic matter. To detect sulfides in aquatic environments, water quality testing systems are needed to test and analyze water samples to ensure the safety of water sources. Due to their good adaptability, they are widely used in water environments such as rivers and lakes.

[0003] In aquaculture waters, sulfides are produced due to uneaten feed and feces. Common equipment for sampling sulfides in water typically involves placing the equipment directly into the water and extracting a water sample for testing. However, this sampling method results in a relatively fixed sampling location, leading to a limited sample size that cannot represent the entire water body. Furthermore, testing this single sample can result in test results that differ significantly from the actual conditions of the tested water body, making it easy for staff to make mistakes in water quality assessment.

[0004] In view of this, in order to overcome the above-mentioned technical problems, the present invention designs and develops a sulfide detection system, which solves the above-mentioned technical problems. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that the sulfide detection system provided by the present invention solves the problem that when water samples are taken, the water samples taken are relatively homogeneous, which affects the test results and the staff’s judgment of water quality.

[0006] This invention provides a sulfide detection system, comprising: a water quality monitoring station; and further comprising:

[0007] Housing assembly; the housing assembly serves to protect the internal components.

[0008] Sampling assembly; the detection device is located within the housing assembly; the sampling assembly is used for the effective collection of samples from different water bodies.

[0009] Preferably, the housing assembly includes:

[0010] The outer shell is cylindrical in shape and is used to protect the internal components. An annular cavity is formed inside the outer shell.

[0011] Airbag No. 1; the airbag No. 1 is annular; the airbag No. 1 is fixedly connected to the annular cavity of the outer shell;

[0012] Cylindrical groove; a cylindrical groove is formed at the middle of the upper end of the outer shell; the cylindrical groove is connected to the cavity inside the outer shell.

[0013] Preferably, the sampling component includes:

[0014] An electric motor; the electric motor is located inside a cylindrical slot; the outer surface sidewall of the electric motor is fixedly connected to the sidewall of the cylindrical slot;

[0015] A transmission rod is fixedly connected to the transmission shaft at the lower end of the motor; the other end of the transmission rod is rotatably connected to the lower end of the inner surface of the outer casing via a bearing.

[0016] Airbag No. 2; four airbags No. 2 are evenly fixedly connected to the inner surface of the outer shell along the circumferential direction; there is a reserved space between the four airbags No. 2;

[0017] An extrusion plate is fixedly connected to the outer sidewall of the transmission rod; the outer surface of the extrusion plate is in contact with the outer surface of the second airbag.

[0018] An annular groove; an annular groove is provided at the lower end of the side wall of the cylindrical groove, corresponding to the position of the extrusion plate; the internal cavity of the outer shell is connected to the cylindrical groove through the annular groove;

[0019] One-way valve No. 1; one-way valve No. 1 is fixedly connected to the lower end of the outer surface of each of the four No. 2 airbags; all four No. 1 one-way valves pass through the lower end of the outer shell;

[0020] Second check valve; each of the four second airbags has a second check valve fixedly connected to its outer surface sidewall; each of the four second check valves passes through the outer surface sidewall of the outer shell.

[0021] Preferably, the front end of the outer surface of the extrusion plate is arc-shaped.

[0022] Preferably, the outer surfaces of the first airbag and the four second airbags are all fixedly connected to the inner surface of the outer shell via Velcro.

[0023] Preferably, the outer surfaces of the first and second check valves are respectively in a sealed sliding connection with the positions passing through the outer casing.

[0024] Preferably, a solar panel with a diameter equal to that of the outer casing is fixedly connected to the upper end of the outer casing via Velcro.

[0025] Preferably, an annular floating plate is fixedly connected to the outer surface sidewall of the outer shell.

[0026] Preferably, an electromagnet is fixedly connected inside the front end of the extrusion plate; an electromagnet is fixedly connected to the inner surface of the outer shell and at the gap between the four second airbags.

[0027] Preferably, a marine drive device is fixedly connected to the rear end of the outer shell.

[0028] The beneficial effects of this invention are as follows:

[0029] The present invention provides a sulfide detection system that protects its internal components through a housing assembly, ensuring their normal and stable operation. This prevents water from the aquaculture water body from entering the system and causing damage. The sampling component can effectively sample different areas of the same aquaculture water body, thus avoiding the problem that fixed sampling locations cannot represent the entire water body, leading to significant discrepancies between the test results and the actual situation of the tested water body, which can easily cause errors in the water quality assessment by the staff. Attached Figure Description

[0030] The invention will now be further described with reference to the accompanying drawings.

[0031] Figure 1 This is a main body diagram of the present invention;

[0032] Figure 2 This is a cross-sectional view of the present invention;

[0033] In the diagram: 1. Shell assembly, 101. Airbag 102. Cylindrical groove 103. Sampling assembly 2. Motor 201. Transmission rod 202. Airbag 203. Extrusion plate 204. Annular groove 205. Check valve 1 206. Check valve 2 207. Solar panel 3. Floating plate 4. Electromagnet 5. Marine drive device 6. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] This invention provides a sulfide detection system that solves the problem that when water samples are taken, the limited variety of samples affects the test results and the staff's judgment of water quality.

[0037] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0038] This invention provides a sulfide detection system, comprising:

[0039] Housing assembly 1; the housing assembly 1 serves to protect the internal components.

[0040] Sampling component 2; the detection device is located inside the housing component 1; the sampling component 2 is used to effectively collect samples from different water bodies.

[0041] In this invention, the housing assembly 1 is used to protect the internal components, enabling them to operate normally and stably. This prevents water from the aquaculture water from entering the electronic components that cannot come into contact with water, thus preventing the equipment from continuing to operate. The sampling assembly 2 of this invention can effectively sample water from different areas of the same aquaculture water body, thus avoiding the problem that the sampling area is relatively fixed, which would result in the sample not being able to represent the entire water body. This would lead to a large difference between the test results and the actual situation of the tested water body, making it easy for staff to make mistakes in water quality assessment. After the water sampling is completed, the staff put the sampled water into the existing water quality monitoring station installed on the riverbank for water quality testing.

[0042] In one specific embodiment of the present invention, the housing assembly 1 includes:

[0043] The outer shell 101 is cylindrical in shape and is used to protect the internal components. An annular cavity is formed inside the outer shell 101.

[0044] Airbag 102; the airbag 102 is annular; the airbag 102 is fixedly connected to the annular cavity of the outer shell 101;

[0045] Cylindrical groove 103; A cylindrical groove 103 is formed at the middle position of the upper end of the outer shell 101; The cylindrical groove 103 is connected to the cavity inside the outer shell 101.

[0046] The shell assembly 1 of this invention has an annular cavity, which ensures that each component can be properly installed inside the shell 101. At the same time, an annular first airbag 102 is fixedly connected inside the cavity of the shell 101. Since the first airbag 102 is large in volume and light in weight, it is easy to float on the water surface, which helps the invention to float smoothly in the aquaculture water body that needs to be sampled. A cylindrical groove 103 is opened at the middle of the upper end of the shell 101, and the inside of the cylindrical groove 103 is cylindrical. The cylindrical groove 103 is connected to the cavity inside the shell 101, which ensures that some components of the invention can be smoothly deployed for sampling.

[0047] In one specific embodiment of the present invention, the sampling component 2 includes:

[0048] Motor 201; the motor 201 is located inside the cylindrical groove 103; the outer surface sidewall of the motor 201 is fixedly connected to the sidewall of the cylindrical groove 103;

[0049] Transmission rod 202; the transmission shaft at the lower end of the motor 201 is fixedly connected to the transmission rod 202; the other end of the transmission rod 202 is rotatably connected to the lower end of the inner surface of the outer casing 101 through a bearing;

[0050] Second airbag 203; four second airbags 203 are uniformly fixedly connected to the inner surface of the outer shell 101 along the circumferential direction; there is reserved space between the four second airbags 203;

[0051] Squeeze plate 204; the outer surface sidewall of the transmission rod 202 is fixedly connected to the squeeze plate 204; the outer surface of the squeeze plate 204 is in contact with the outer surface of the second airbag 203;

[0052] Annular groove 205; An annular groove 205 is provided at the lower end of the side wall of the cylindrical groove 103, corresponding to the position of the extrusion plate 204; The internal cavity of the outer shell 101 is connected to the cylindrical groove 103 through the annular groove 205.

[0053] One-way valve 206; One-way valve 206 is fixedly connected to the lower end of the outer surface of each of the four second airbags 203; All four one-way valves 206 pass through the lower end of the outer shell 101.

[0054] Second check valve 207; each of the four second airbags 203 has a second check valve 207 fixedly connected to its outer surface sidewall; each of the four second check valves 207 passes through the outer surface sidewall of the outer shell 101.

[0055] When samples need to be collected from the aquaculture area to be tested, the motor 201 inside the outer casing 101 starts to operate, and then the transmission rod 202 at its lower end also starts to rotate. To ensure that the transmission rod 202 can operate smoothly, in this invention, the other end of the transmission rod 202 is rotatably connected to the lower end of the inner surface of the outer casing 101 via a bearing. This reduces excessive vibration caused by the transmission rod 202 during rotation, thereby ensuring the stability of the equipment during operation. During the rotation of the transmission rod 202, its outer surface sidewall is fixed... The fixedly connected extrusion plate 204 also unfolds and rotates together. During the rotation of the extrusion plate 204, it squeezes the second airbag 203, causing the gas inside the second airbag 203 to be discharged from the second one-way valve 207 fixedly connected to the outer surface side wall of the second airbag 203. The extrusion plate 204 continues to rotate. When the second airbag 203 loses the extrusion of the extrusion plate 204, during the rebound process, the airbag draws water samples from a certain location in the aquaculture water into the second airbag 203 through the first one-way valve 206 fixedly connected to its lower end, thereby completing the water sample collection work.

[0056] To ensure effective water sampling from different locations within the same body of water, four secondary airbags 203 are uniformly fixedly connected circumferentially within the outer casing 101. Each secondary airbag 203 has a secondary one-way valve 207 fixedly connected to its outer sidewall, and a primary one-way valve 206 fixedly connected to the lower end of its outer surface. A reserved space is provided between each secondary airbag 203. After the motor 201 drives the squeezing plate 204 to squeeze one of the secondary airbags 203, the motor 201 stops operating, and the squeezing plate 204 remains in the reserved space between two secondary airbags 203. Subsequently, when the invention is placed at another location within the sampling area, the motor 201 restarts, allowing the invention to continue sampling the water. This method eliminates the localized nature of water samples. To reduce the discrepancy between the test results and the actual situation of the tested water area, thereby reducing the possibility of staff misjudging the water quality, after the water sample is collected, the motor 201 is turned on again after the equipment is retrieved from the water body and it continues to run. At this time, the second airbag 203, which has collected the water sample, is squeezed a second time, and the water sample is discharged from the second one-way valve 207 and collected for testing. In order to ensure that the collected water sample can smoothly enter the second airbag 203, and also to ensure that the water sample collected in the second airbag 203 can smoothly exit the second airbag 203, the second one-way valve 207 and the first one-way valve 206, which are fixedly connected to the outer side wall and the lower end of the second airbag 203, all pass through the outer shell 101 and are connected to the outside. The second airbag 203 can assist the first airbag 102 in floating.

[0057] In order to ensure that the extrusion plate 204 can be unfolded normally, an annular groove 205 is provided at the lower end of the side wall of the cylindrical groove 103 corresponding to the position of the extrusion plate 204. At the same time, the internal cavity of the outer shell 101 is connected to the cylindrical groove 103 through the annular groove 205, so that the extrusion plate 204 can be unfolded smoothly in the outer shell 101 without being obstructed.

[0058] In one specific embodiment of the present invention, the front end of the outer surface of the extrusion plate 204 is arc-shaped.

[0059] Considering that the extrusion plate 204 needs to extrude four second airbags 203, in order to prevent the sharp edges of the extrusion plate 204 from generating excessive friction with the outer surface of the second airbag 203, which would cause the extrusion plate 204 to malfunction, and also to prevent the sharp edges of the extrusion plate 204 from causing unnecessary damage to the outer surface of the second airbag 203 during the extrusion process, the front end of the outer surface of the extrusion plate 204 is set to an arc shape.

[0060] In one specific embodiment of the present invention, the outer surfaces of the first airbag 102 and the four second airbags 203 are all fixedly connected to the inner surface of the outer shell 101 by Velcro.

[0061] To facilitate maintenance or replacement of airbag 102 and airbag 203, both airbag 102 and airbag 203 are fixedly connected to the inner surface of the outer shell 101 via Velcro. When airbag 102 or airbag 203 needs to be replaced or repaired, simply pull on airbag 102 or airbag 203 to separate the Velcro, thereby removing airbag 102 or airbag 203 for replacement or repair. This method saves time for maintenance personnel.

[0062] In one specific embodiment of the present invention, the outer surfaces of the first check valve 206 and the second check valve 207 respectively pass through the outer casing 101; the first check valve 206 and the second check valve 207 are fitted with the outer casing with an interference fit.

[0063] To prevent water from flowing into the aquaculture water body through the gaps between the No. 1 check valve 206 and the No. 2 check valve 207 and the outer shell 101, the outer surfaces of the No. 1 check valve 206 and the No. 2 check valve 207 respectively pass through the outer shell 101. At the same time, the No. 1 check valve 206 and the No. 2 check valve 207 are fitted with the outer shell by an interference fit. This protects the other components located inside the outer shell 101 so that they can operate effectively in a relatively dry environment, thereby extending the service life of the invention.

[0064] In one specific embodiment of the present invention, a solar panel 3 with the same diameter as the outer shell 101 is fixedly connected to the upper end of the outer shell 101 by Velcro.

[0065] Considering the need to conserve state-owned resources, a ring-shaped solar panel 3 with the same diameter as the outer casing 101 is installed at the upper end of the outer casing 101. The wires connecting the solar panel 3 and the motor 201 can be embedded in the wall thickness of the outer casing 101. Considering the need for maintenance of the solar panel 3, the solar panel 3 is fixedly connected to the upper surface of the outer casing 101 with Velcro. When maintenance of the solar panel 3 is required, it can be simply pulled up. This method improves the maintenance efficiency of the solar panel 3 and also improves the working efficiency of the present invention.

[0066] In one specific embodiment of the present invention, an annular floating plate 4 is fixedly connected to the outer surface sidewall of the outer shell 101.

[0067] To prevent the invention from capsizing due to unstable water surface during operation in aquaculture water, which would prevent the invention from continuing to operate, an annular floating plate 4 is fixedly connected to the outer surface sidewall of the outer shell 101. This increases the contact area with the surface of the aquaculture water, thereby reducing the possibility of capsizing. At the same time, the floating plate 4 further improves the invention's ability to float on the water surface, thus enabling it to operate effectively.

[0068] In one specific embodiment of the present invention, an electromagnet 5 is fixedly connected inside the front end of the extrusion plate 204; an electromagnet 5 is fixedly connected to the inner surface of the outer shell 101 and at the gap between the four second airbags 203.

[0069] After the motor 201 drives the squeezing plate 204 to squeeze one of the second airbags 203, the motor 201 stops operating and then moves to another location to continue sampling. During this process, to prevent the squeezing plate 204 from squeezing the next second airbag 203 due to inertia at the same water location, an electromagnet 5 is fixedly connected to the inner surface of the outer shell 101, which has a reserved space between the inner front end of the squeezing plate 204 and each second airbag 203. The electromagnets 5 at the squeezing plate 204 and the electromagnets 5 on the inner surface of the outer shell 101 have opposite magnetic poles on opposite sides, and their magnetism is different, thus making the two electromagnets 5... The two airbags can attract each other. This method ensures that after the squeezing plate 204 has finished squeezing one of the second airbags 203 and the motor 201 has stopped running, the squeezing plate 204 will stay effectively in the reserved space between the second airbags 203 due to the mutual attraction of the electromagnets 5. It will not squeeze the next second airbag 203 due to inertia, thus preventing water samples from being collected at the same location. This improves the working efficiency of the invention and avoids the situation where the staff may make mistakes in water quality assessment when collecting and analyzing water samples from the same area.

[0070] Meanwhile, an electromagnet 5 is installed inside the extrusion plate 204 and on the inner surface of the outer shell 101. When the motor 201 is off, the electromagnet 5 is energized and generates an attraction, which limits the inertial rotation of the extrusion plate 204. When the motor 201 is started, the electromagnet 5 is de-energized, and the magnetism disappears, so it will not affect the normal rotation of the extrusion plate 204.

[0071] In one specific embodiment of the present invention, a marine drive device 6 is fixedly connected to the rear end of the outer shell 101.

[0072] To ensure that the present invention can move freely within the aquaculture water body to effectively collect samples at different locations, a marine drive device 6 is added to the rear end of the outer shell 101. Its structure and working principle are similar to the drive device of a small remote-controlled boat model in the prior art, which is used to achieve movement to any position under the remote control operation of the testing personnel. This ensures that the present invention can move freely within the aquaculture water body to be tested, and thus can successfully collect water samples from different locations for testing, thereby ensuring the accuracy of the test results of the present invention.

[0073] Working Principle: When samples need to be collected from the aquaculture area to be tested, the motor 201 inside the outer casing 101 starts to operate, and then the transmission rod 202 at its lower end also starts to rotate. To ensure that the transmission rod 202 can unfold smoothly, in this invention, the other end of the transmission rod 202 is rotatably connected to the lower end of the inner surface of the outer casing 101 through a bearing, thereby reducing excessive vibration caused by the transmission rod 202 during rotation and ensuring the stability of the equipment during operation. When the transmission rod 202 rotates, the extrusion plate 204 fixedly connected to its outer surface sidewall also unfolds and rotates together. During the rotation of the extrusion plate 204, the second airbag 203 is extruded, causing the gas inside the second airbag 203 to be released from the second airbag 203. The air bladder 203 is discharged into a second one-way valve 207 fixedly connected to the outer sidewall of the air bladder 203. When the second air bladder 203 loses the pressure of the squeezing plate 204, during the rebound process, the air bladder draws water samples from a certain location in the aquaculture water into the second air bladder 203 through a first one-way valve 206 fixedly connected to its lower end, thereby completing the water sample collection. To ensure that the present invention can effectively collect water samples from different locations in the same water area, four second air bladders 203 are evenly fixedly connected along the circumferential direction inside the outer shell 101 of the present invention. A second one-way valve 207 is fixedly connected to the outer sidewall of each second air bladder 203, and a first one-way valve 206 is fixedly connected to the lower end of the outer surface of each second air bladder 203. There are reserved spaces between them. After the motor 201 drives the extrusion plate 204 to extrude one of the second airbags 203, the motor 201 stops running. At this time, the extrusion plate 204 stays in the reserved space between the two second airbags 203. During this process, in order to prevent the extrusion plate 204 from extruding the next second airbag 203 due to inertia at the same water location, an electromagnet 5 is fixedly connected to the inner front end of the extrusion plate 204 and the inner surface of the outer shell 101 of the reserved space between each second airbag 203. This method ensures that after the extrusion plate 204 has extruded one of the second airbags 203 and the motor 201 has stopped running, the extrusion plate 204 will stay effectively due to the mutual attraction of the electromagnets 5. The space between the two airbags 203 is reserved, preventing the squeezing plate 204 from squeezing the next airbag 203 due to inertia, thus avoiding water sampling at the same location. This improves the efficiency of the invention and avoids errors in water quality assessment caused by collecting and analyzing water samples from the same area. Subsequently, with the help of the marine drive device 6 added to the rear of the outer shell 101, the invention can move freely in the aquaculture water body to be tested, thus successfully collecting water samples from different locations for testing, ensuring the accuracy of the test results. When the invention is placed in another location in the sampling water area, the motor 201 starts running again.This allows the invention to continue sampling the water body. This method eliminates limitations on water samples, thereby reducing the discrepancy between test results and the actual situation of the tested water area, thus reducing the possibility of errors in water quality assessment by staff. After the water sample collection is completed, the motor 201 continues to operate. At this time, the second airbag 203, which has collected the water sample, is subjected to a second compression, and the water sample is discharged from the second one-way valve 207 for collection and testing. To ensure that the collected water sample can smoothly enter the second airbag 203, and also to ensure that the collection is completed within the second airbag 203... The water sample can then be smoothly discharged from the second airbag 203. Therefore, the second one-way valve 207 and the first one-way valve 206, which are fixedly connected to the outer sidewall and lower end of the second airbag 203, all pass through the outer shell 101 and connect to the outside. To ensure the extrusion plate 204 can deploy normally, an annular groove 205 is provided at the lower end of the sidewall of the cylindrical groove 103, corresponding to the position of the extrusion plate 204. Simultaneously, the internal cavity of the outer shell 101 is connected to the cylindrical groove 103 through the annular groove 205, thus allowing the extrusion plate 204 to deploy smoothly within the outer shell 101 without obstruction.

[0074] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sulfide detection system characterized by: include: Housing assembly (1); the housing assembly (1) serves to protect the internal components; Detection component (2); The detection device is located inside the housing assembly (1); the detection assembly (2) is used to effectively collect samples from different water bodies.

2. A sulphide detection system according to claim 1, characterised in that: The housing assembly (1) includes: The outer shell (101) is cylindrical in shape and is used to protect the internal components. An annular cavity is provided inside the outer shell (101). Airbag No. 1 (102); the airbag No. 1 (102) is annular; the airbag No. 1 (102) is fixedly connected to the annular cavity of the outer shell (101); Cylindrical groove (103); A cylindrical groove (103) is formed at the middle position of the upper end of the outer shell (101); The cylindrical groove (103) is connected to the cavity inside the outer shell (101).

3. The sulfide detection system of claim 1, wherein: The detection component (2) includes: Motor (201); the motor (201) is located in the cylindrical groove (103); the outer surface sidewall of the motor (201) is fixedly connected to the sidewall of the cylindrical groove (103); Transmission rod (202); the transmission shaft at the lower end of the motor (201) is fixedly connected to the transmission rod (202); the other end of the transmission rod (202) is rotatably connected to the lower end of the inner surface of the outer casing (101) through a bearing; Second airbag (203); four second airbags (203) are uniformly fixedly connected to the inner surface of the outer shell (101) along the circumferential direction; there is a reserved space between the four second airbags (203); Squeeze plate (204); the outer surface sidewall of the transmission rod (202) is fixedly connected to the squeeze plate (204); the outer surface of the squeeze plate (204) is in contact with the outer surface of the second airbag (203); Annular groove (205); The lower end of the side wall of the cylindrical groove (103) is provided with an annular groove (205) corresponding to the position of the extrusion plate (204); The internal cavity of the outer shell (101) is connected to the cylindrical groove (103) through the annular groove (205); One-way valve (206); one-way valve (206) is fixedly connected to the lower end of the outer surface of each of the four second airbags (203); one-way valve (206) passes through the lower end of the outer shell (101); Second check valve (207); the outer surface sidewalls of the four second airbags (203) are all fixedly connected with the second check valve (207); the four second check valves (207) all pass through the outer surface sidewalls of the outer shell (101).

4. The sulfide detection system according to claim 3, characterized in that: The front end of the outer surface of the extrusion plate (204) is arc-shaped.

5. A sulfide detection system according to claim 3, characterized in that: The outer surfaces of the first airbag (102) and the four second airbags (203) are all fixedly connected to the inner surface of the outer shell (101) by Velcro.

6. The sulfide detection system according to claim 3, characterized in that: The outer surfaces of the first check valve (206) and the second check valve (207) pass through the outer shell (101) respectively; the first check valve (206) and the second check valve (207) are fitted with the outer shell by an interference fit.

7. The sulfide detection system according to claim 1, characterized in that: A solar panel (3) with the same diameter as the outer shell (101) is fixedly connected to the upper end of the outer shell (101) by Velcro.

8. A sulfide detection system according to claim 1, characterized in that: An annular floating plate (4) is fixedly connected to the outer surface sidewall of the outer shell (101).

9. A sulfide detection system according to claim 3, characterized in that: An electromagnet (5) is fixedly connected inside the front end of the extrusion plate (204); an electromagnet (5) is fixedly connected to the inner surface of the outer shell (101) and at the gap between the four second airbags (203).

10. A sulfide detection system according to claim 1, characterized in that: The rear end of the outer shell (101) is fixedly connected to a marine drive unit (6).

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