Seawater quality detection device and method

Abstract

The present invention belongs to the technical field of water quality detection, and specifically to a device and method for detecting the quality of seawater, comprising a floating plate; a water retaining ring is fixedly connected to the top surface of the floating plate, a stabilizing cone is fixedly connected to the bottom surface of the floating plate, and through holes are provided at the central parts of the floating plate and the stabilizing cone; a connecting shell is provided in the through hole, a cavity is provided in the connecting shell, a detection unit is provided in the cavity, and a water inlet assembly is provided on the connecting shell; a rotating shaft is driven to rotate by a motor, thereby rotating a winding wheel, and at this time, the wire wound on the winding wheel will move downward, thereby allowing the connecting shell to enter the water, and after the connecting shell reaches a specified depth, the water inlet assembly is opened to allow water to enter the connecting shell, and then detected by the detection unit, thereby meeting the detection requirements for different water levels and greatly improving the convenience of water quality detection.

Description

Technical Field

[0001] The invention belongs to the technical field of water quality detection, in particular to a device and method for detecting the quality of seawater. Background Art

[0002] Ocean is the general term for the most extensive water bodies on Earth. The surface of the Earth is divided into vast waters that are interconnected by continents. The central part of the ocean is called the ocean, and the edge is called the sea. They communicate with each other to form a unified water body. In order to protect water resources and avoid pollution to the ocean, it is necessary to conduct real-time testing of the seawater quality in the region. Water quality is the abbreviation of water quality, which indicates the physical (such as color, turbidity, odor, etc.), chemical (inorganic and organic content) and biological (bacteria, microorganisms, plankton, benthic organisms) characteristics of the water body and its composition.

[0003] Seawater quality testing plays an important role in protecting the marine ecological environment and is also an important part of marine scientific research. It is of great significance for the monitoring and protection of the marine ecological environment, and can provide reliable data support for marine scientific research, such as suspended matter, dissolved oxygen, pH, conductivity, organic matter composition, microbial composition and other data.

[0004] The invention patent with publication number CN108490147B discloses a water quality detector for seawater aquaculture. The key points of its technical solution are: including a floating plate, a mounting plate, a component box, a pillar, a data antenna, a solar panel, a connecting column, a sensor box, a guide plate, a pendant, a stabilizing plate, an isolation plate, an integrated circuit board, a sealing cover, graphite paper, a battery, a water inlet and a sensor.

[0005] However, the above technology often has the following defects: in the process of water body detection, in order to ensure the comprehensiveness and accuracy of water quality assessment, it is necessary to detect water quality at different depths, and detect basic physical and chemical indicators such as temperature, salinity, dissolved oxygen, pH value, and key nutrient parameters such as ammonia nitrogen, nitrite, and active phosphate of each water layer respectively. However, when the above device detects water quality, it can only detect water quality close to the water surface, which has great limitations and cannot adapt to the current various requirements for water quality detection. For this reason, the present invention provides a seawater water quality detection device and method. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem raised in the background technology, the present invention provides a device and method for detecting the water quality of seawater.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a seawater water quality detection device comprises a floating plate; a water retaining ring is fixedly connected to the top surface of the floating plate, a stabilizing cone is fixedly connected to the bottom surface of the floating plate, and through holes are provided in the central parts of the floating plate and the stabilizing cone; a connecting shell is provided in the through hole, a cavity is provided in the connecting shell, a detection unit is provided in the cavity, and a water inlet assembly is provided on the connecting shell; a pair of fixed plates are fixedly connected to the top surface of the floating plate, a rotating shaft is rotatably connected between the fixed plates, a take-up wheel is fixedly connected to the surface of the rotating shaft, a wire is fixedly connected to the take-up wheel, an end of the wire away from the take-up wheel is fixedly connected to the connecting shell, and a motor for driving the rotating shaft to rotate is provided on one side of the fixed plate.

[0008] Preferably, the water inlet assembly includes a water inlet groove provided on the side wall of the connecting shell, a slide groove connected to the water inlet groove is provided in the connecting shell, a sealing plate made of magnetic material is provided in the slide groove, a first spring is fixedly connected between the top surface of the sealing plate and the inner wall of the slide groove, and an electromagnet with magnetic properties to the sealing plate is fixedly connected to the top surface of the inner wall of the slide groove.

[0009] Preferably, a rectangular groove is provided in the connecting shell, a group of rectangular plates are sealingly and slidably connected to the inner wall of the rectangular groove, the rectangular plates are fixed by connecting rods, a water guide hole connected to the rectangular groove is provided on the bottom surface of the cavity, and a driving mechanism for driving the rectangular plates to move is provided in the connecting shell.

[0010] Preferably, the sealing plate is sealingly and slidingly connected to the inner wall of the slide groove, a connecting rod is connected between the slide groove and the rectangular groove, a connecting pipe is connected between the rectangular groove and the slide groove, an air outlet one-way valve is arranged in the connecting pipe, a first circular tube is arranged on the side wall of the slide groove, an air intake one-way valve is arranged in the first circular tube, and a second circular tube connected to the rectangular groove is arranged on the side wall of the connecting shell, and a control valve is arranged in the second circular tube.

[0011] Preferably, an annular groove is provided on the top surface of the inner wall of the cavity, a retaining ring is slidably connected to the inner wall of the annular groove, a sponge ring is fixedly connected to the top surface of the retaining ring, a round rod is sealingly and slidably connected to the top surface of the connecting shell, the bottom surface of the round rod is fixedly connected to the retaining ring, a second spring is fixedly connected between the top surface of the retaining ring and the inner wall of the annular groove, and a push plate for pushing the round rod is provided on the inner wall of the through hole.

[0012] Preferably, a group of inclined water outlet grooves are provided on the top surface of the inner wall of the cavity, one end of the water outlet groove is connected to the annular groove, and a floating ring is provided in the cavity to seal the water outlet groove.

[0013] Preferably, a fixing rod is fixedly connected to the top surface of the cavity, a support plate is slidably connected to the surface of the fixing rod, a side wall of the support plate is fixedly connected to a floating ring, and a limiting disk is fixedly connected to the bottom surface of the fixing rod.

[0014] Preferably, a filter screen is fixedly connected to the inner wall of the water inlet trough, bristles are fixedly connected to the side of the sealing plate close to the filter screen, a group of first magnetic blocks are fixedly connected to the side of the filter screen away from the sealing plate, and a group of second magnetic blocks that repel the first magnetic blocks are fixedly connected to the side of the sealing plate close to the filter screen.

[0015] A method for detecting the quality of seawater, the method using the above-mentioned device for detecting the quality of seawater, the method comprising the following steps:

[0016] S1: Place the floating board on the water surface, use the motor to drive the rotating shaft to rotate, so that the take-up wheel rotates, and the wire moves downward, so that the connecting shell enters the water, and the take-up wheel stops rotating after the connecting shell reaches the specified depth;

[0017] S2: The sealing plate is lifted up by the electromagnet, and water enters the cavity from the water inlet tank, and then contacts the detection unit for detection. After the water quality detection is completed, the wire is pulled in reverse by the take-up wheel, so that the connecting shell enters the through hole;

[0018] S3: When the connecting shell enters the through hole, the push plate pushes the round rod, so that the round rod drives the sponge ring to move downward. At this time, the sponge ring can clean the seawater remaining on the surface of the detection unit;

[0019] S4: When the connecting shell descends, the second spring will pull the retaining ring, so that the sponge ring is squeezed by the annular groove, and the water absorbed by the sponge ring is squeezed out. When the water enters the cavity, the floating ring will rise with the help of buoyancy to seal the water outlet groove.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. The present invention drives the rotating shaft to rotate by means of a motor, thereby rotating the take-up wheel. At this time, the wire wound on the take-up wheel will move downward, allowing the connecting shell to enter the water. After the connecting shell reaches a specified depth, the water inlet component is turned on to allow water to enter the connecting shell, and then the water is detected by the detection unit, thereby meeting the detection requirements for different water levels and greatly improving the convenience of water quality detection.

[0022] 2. In the present invention, when the connecting shell reaches a specified depth, the sealing plate can be driven to rise by the electromagnet. At this time, water will enter the cavity from the water inlet groove, and then contact and detect with the detection unit. When the connecting shell enters the through hole, the connecting shell is no longer in contact with the water. At this time, the water will be discharged from the water inlet groove, and then the electromagnet is closed, so that the first spring pushes the sealing plate to seal the water inlet groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] Figure 1 is a stereogram of the detection device of the present invention;

[0025] Figure 2 It is a schematic diagram of the internal structure of the floating ring, the water retaining ring and the stabilizing cone in the present invention;

[0026] Figure 3 It is a schematic diagram of the internal structure of the connecting shell in the present invention;

[0027] Figure 4 yes Figure 3 A magnified image of point A;

[0028] Figure 5 It is a partial structural cross-sectional view of the connecting shell in the present invention;

[0029] Figure 6 It is a flow chart of the method in the present invention.

[0030] In the figure: 1. floating plate; 2. water retaining ring; 3. stabilizing cone; 4. fixing plate; 5. rotating shaft; 6. conducting wire; 7. take-up wheel; 8. connecting shell; 9. cavity; 10. detection unit; 11. water inlet groove; 12. sealing plate; 13. slide groove; 14. electromagnet; 15. rectangular groove; 16. rectangular plate; 17. connecting rod; 18. water guide hole; 19. connecting pipe; 20. first circular tube; 21. second circular tube; 22. sponge ring; 23. retaining ring; 24. round rod; 25. water outlet groove; 26. floating ring; 27. support plate; 28. limit plate; 29. ​​fixing rod; 30. push plate; 31. filter screen; 32. bristles; 33. first magnetic block; 34. second magnetic block; 35. annular groove. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0032] Embodiment 1: Figures 1 to 4As shown, the seawater quality detection device described in the embodiment of the present invention comprises a floating board 1; a water retaining ring 2 is fixedly connected to the top surface of the floating board 1, a stabilizing cone 3 is fixedly connected to the bottom surface of the floating board 1, and a through hole is provided at the center of the floating board 1 and the stabilizing cone 3; a connecting shell 8 is provided in the through hole, a cavity 9 is provided in the connecting shell 8, a detection unit 10 is provided in the cavity 9, and a water inlet assembly is provided on the connecting shell 8; a pair of fixed plates 4 are fixedly connected to the top surface of the floating board 1, a rotating shaft 5 is rotatably connected between the fixed plates 4, a take-up wheel 7 is fixedly connected to the surface of the rotating shaft 5, a wire 6 is fixedly connected to the take-up wheel 7, an end of the wire 6 away from the take-up wheel 7 is fixedly connected to the connecting shell 8, and a motor driving the rotating shaft 5 to rotate is provided on one side of the fixed plate 4;

[0033] When the present application needs to detect water bodies at different water levels, it is necessary to first place the floating board 1 on the water surface, and then use the motor to drive the rotating shaft 5 to rotate, so that the take-up wheel 7 rotates. At this time, the wire 6 wound on the take-up wheel 7 will move downward, so that the connecting shell 8 enters the water. After the connecting shell 8 reaches the specified depth, the water inlet component is turned on to allow water to enter the connecting shell 8, and then the detection unit 10 performs detection. After the water body detection is completed, the motor controls the take-up wheel 7 to reverse, so that the wire 6 pulls the connecting shell 8 up to allow the connecting shell 8 to enter the through hole. At this time, the water in the connecting shell 8 will be discharged with the help of the water inlet component, and then the floating board 1 is placed at other water surface positions to continue to detect the water body. The above-mentioned mechanism can meet the detection needs of different water levels, greatly improving the convenience of water quality detection.

[0034] The water inlet assembly includes a water inlet groove 11 provided on the side wall of the connecting shell 8, a slide groove 13 connected to the water inlet groove 11 is provided in the connecting shell 8, a sealing plate 12 made of magnetic material is arranged in the slide groove 13, a first spring is fixedly connected between the top surface of the sealing plate 12 and the inner wall of the slide groove 13, and an electromagnet 14 which is magnetic to the sealing plate 12 is fixedly connected to the top surface of the inner wall of the slide groove 13; when the connecting shell 8 in the present application reaches a specified depth, the sealing plate 12 can be sucked up by the electromagnet 14, at which time water will enter the cavity 9 from the water inlet groove 11, and then contact the detection unit 10 for detection, when the connecting shell 8 enters the through hole, the connecting shell 8 is no longer in contact with water, at which time water will be discharged from the water inlet groove 11, and then the electromagnet 14 is closed, so that the first spring pushes the sealing plate 12 to seal the water inlet groove 11.

[0035] A rectangular groove 15 is provided in the connecting shell 8, and a group of rectangular plates 16 are sealed and slidably connected to the inner wall of the rectangular groove 15. The rectangular plates 16 are fixed by connecting rods 17. A water guide hole 18 connected to the rectangular groove 15 is provided on the bottom surface of the cavity 9, and a driving mechanism for driving the rectangular plate 16 to move is provided in the connecting shell 8; when water enters the cavity 9 in the present application, the connecting plate can be driven to move with the help of the driving mechanism, so that the connecting plate on the right side moves to the side away from the sealing plate 12. At this time, the connecting plate on the right side will be misaligned with the water inlet hole. At this time, the water in the cavity 9 will enter between a pair of connecting plates from the water guide hole 18, and then until the next connecting plate moves to the water guide hole 18, the water guide hole 18 is sealed with the plate 12. At this time, the water entering between the connecting plates will be sampled and can be used for subsequent more complex detection.

[0036] The sealing plate 12 is sealingly and slidably connected to the inner wall of the slide groove 13, a connecting rod 17 is connected between the slide groove 13 and the rectangular groove 15, a connecting pipe 19 is connected between the rectangular groove 15 and the slide groove 13, an air outlet check valve is arranged in the connecting pipe 19, a first round tube 20 is arranged on the side wall of the slide groove 13, an air intake check valve is arranged in the first round tube 20, a second round tube 21 connected to the rectangular groove 15 is arranged on the side wall of the connecting shell 8, a control valve is arranged in the second round tube 21;

[0037] When the sealing plate 12 in the present application moves upward, it will push the gas in the chute 13 from the connecting pipe 19 into the rectangular groove 15. At this time, the gas will push the connecting plate to move, so that the connecting plate on the right will be misaligned with the water inlet hole. At this time, the water in the cavity 9 will enter between a pair of connecting plates from the water guide hole 18. Then, when the sealing plate 12 continues to rise, the gas in the chute 13 will continue to enter the rectangular groove 15, thereby continuously pushing the connecting plate to move, so that the next connecting plate moves to the water guide hole 18, and the water guide hole 18 is sealed with the plate 12. Then, when the connecting shell 8 enters the through hole, the sealing plate 12 can be moved downward. At this time, the chute 13 will take in air from the first circular tube 20. The connecting plate can be driven to move continuously through the rising driving mechanism, so that seawater of different depths can be stored between all connecting plates for detection, thereby improving the diversity of water sampling.

[0038] An annular groove 35 is provided on the top surface of the inner wall of the cavity 9, a retaining ring 23 is slidably connected to the inner wall of the annular groove 35, a sponge ring 22 is fixedly connected to the top surface of the retaining ring 23, a round rod 24 is sealingly slidably connected to the top surface of the connecting shell 8, the bottom surface of the round rod 24 is fixedly connected to the retaining ring 23, a second spring is fixedly connected between the top surface of the retaining ring 23 and the inner wall of the annular groove 35, and a push plate 30 for pushing the round rod 24 is provided on the inner wall of the through hole;

[0039] In the present application, after the detection unit 10 is used, seawater will remain on the detection unit 10. The residual seawater will affect the subsequent detection results of the detection unit 10 on seawater at other depths. When the connecting shell 8 enters the through hole through the above-mentioned mechanism, the push plate 30 will push the round rod 24, so that the round rod 24 drives the sponge ring 22 to move downward. At this time, the sponge ring 22 can clean the seawater remaining on the surface of the detection unit 10. Then, when the connecting shell 8 moves downward, the second spring will pull the retaining ring 23, so that the sponge ring 22 enters the annular groove 35. The retaining ring 23 can block the seawater to prevent the seawater from soaking the sponge ring 22 and affecting the cleaning effect of the detection unit 10.

[0040] A group of inclined water outlet grooves 25 are provided on the top surface of the inner wall of the cavity 9, one end of the water outlet groove 25 is connected to the annular groove 35, and a floating ring 26 is provided in the cavity 9 to seal the water outlet groove 25; when the sponge ring 22 in the present application is reset, it will be squeezed by the annular groove 35 with the help of the second spring tension. At this time, the water absorbed by the sponge ring 22 will be squeezed out, and the water will be discharged from the water outlet groove 25. When water enters the cavity 9, the floating ring 26 will float up to seal the water outlet groove 25 to prevent water from entering the annular groove 35.

[0041] A fixing rod 29 is fixedly connected to the top surface of the cavity 9, a support plate 27 is slidably connected to the surface of the fixing rod 29, a side wall of the support plate 27 is fixedly connected to the floating ring 26, and a limiting plate 28 is fixedly connected to the bottom surface of the fixing rod 29; the floating ring 26 in the present application can be limited by the contact between the supporting plate 27 and the limiting plate 28, and when water enters the cavity 9, the floating ring 26 will rise by the buoyancy, thereby sealing the water outlet trough 25.

[0042] Embodiment 2: Figure 5 As shown, compared with Example 1, another implementation of the present invention is: a filter screen 31 is fixedly connected to the inner wall of the water inlet trough 11, a brush 32 is fixedly connected to the side of the sealing plate 12 close to the filter screen 31, a group of first magnetic blocks 33 are fixedly connected to the side of the filter screen 31 away from the sealing plate 12, and a group of second magnetic blocks 34 that repel the first magnetic blocks 33 are fixedly connected to the side of the sealing plate 12 close to the filter screen 31; in the present application, when the water inlet trough 11 is taking in water, the filter screen 31 can filter larger impurities in the seawater, and at the same time, when the sealing plate 12 is moving, the bristles 32 on the sealing plate 12 can brush off the impurities on the filter screen 31, and at the same time, the filter screen 31 can be continuously shaken by means of the repulsion between the first magnetic block 33 and the second magnetic block 34, so as to further assist in cleaning the impurities on the filter screen 31.

[0043] like Figure 6 As shown, a method for detecting the quality of seawater body water, the method adopts the above-mentioned seawater body water quality detection device, and the method comprises the following steps:

[0044] S1: placing the floating board 1 on the water surface, driving the rotating shaft 5 to rotate with the help of a motor, so that the take-up wheel 7 rotates, and the wire 6 moves downward, so that the connecting shell 8 enters the water, and the take-up wheel 7 stops rotating after the connecting shell 8 reaches a specified depth;

[0045] S2: The sealing plate 12 is pulled up by the electromagnet 14, and water enters the cavity 9 from the water inlet groove 11, and then contacts the detection unit 10 for detection. After the water quality detection is completed, the wire 6 is reversed and pulled by the take-up wheel 7, so that the connecting shell 8 enters the through hole;

[0046] S3: When the connecting shell 8 enters the through hole, the push plate 30 pushes the round rod 24, so that the round rod 24 drives the sponge ring 22 to move downward. At this time, the sponge ring 22 can clean the seawater remaining on the surface of the detection unit 10;

[0047] S4: When the connecting shell 8 descends, the second spring will pull the retaining ring 23, so that the sponge ring 22 is squeezed by the annular groove 35, and the water adsorbed by the sponge ring 22 is squeezed out. When the water enters the cavity 9, the floating ring 26 will rise with the help of buoyancy to seal the water outlet groove 25.

[0048] Working principle: by placing the floating board 1 on the water surface, and then using the motor to drive the rotating shaft 5 to rotate, so that the take-up wheel 7 rotates, at this time the wire 6 wound on the take-up wheel 7 will move downward, so that the connecting shell 8 enters the water, after the connecting shell 8 reaches the specified depth, the water inlet component is turned on, allowing water to enter the connecting shell 8, and then it is detected by the detection unit 10. After the water body detection is completed, the motor controls the take-up wheel 7 to reverse, so that the wire 6 pulls the connecting shell 8 up, so that the connecting shell 8 enters the through hole, and then the water in the connecting shell 8 is discharged with the help of the water inlet component, and then the floating board 1 is placed on it. At its water surface position, the water body continues to be detected. The above mechanism can meet the detection requirements of different water levels, greatly improving the convenience of water quality detection. When the connecting shell 8 in the present application reaches the specified depth, the sealing plate 12 can be sucked up by the electromagnet 14. At this time, water will enter the cavity 9 from the water inlet groove 11, and then contact with the detection unit 10 for detection. When the connecting shell 8 enters the through hole, the connecting shell 8 is no longer in contact with the water. At this time, the water will be discharged from the water inlet groove 11, and then the electromagnet 14 will be closed, so that the first spring pushes the sealing plate 12 to seal the water inlet groove 11.

[0049] When water enters the cavity 9 in the present application, the connecting plate can be driven to move by means of a driving mechanism, so that the right connecting plate moves to the side away from the sealing plate 12. At this time, the right connecting plate will be misaligned with the water inlet hole. At this time, the water in the cavity 9 will enter between a pair of connecting plates from the water guide hole 18, and then until the next connecting plate moves to the water guide hole 18, the water guide hole 18 is sealed with the plate 12. At this time, the water entering between the connecting plates will be sampled and can be used for subsequent more complex detection. When the sealing plate 12 in the present application moves upward, it will push the gas in the slide groove 13 from the connecting pipe 19 into the rectangular groove 15. At this time, the gas will push the connecting plate to move, so that the right side The connecting plate will be misaligned with the water inlet hole. At this time, the water in the cavity 9 will enter between the pair of connecting plates from the water guide hole 18. Then, when the sealing plate 12 continues to rise, the gas in the chute 13 will continue to enter the rectangular groove 15, thereby pushing the connecting plate to move, so that the next connecting plate moves to the water guide hole 18, and the water guide hole 18 is sealed with the plate 12. Then, when the connecting shell 8 enters the through hole, the sealing plate 12 can be moved downward. At this time, the chute 13 will take in air from the first circular tube 20. The connecting plate can be driven to move continuously through the rising driving mechanism, so that seawater of different depths can be stored between all connecting plates for detection, thereby improving the diversity of water sampling.

[0050] In the present application, after the detection unit 10 is used, seawater will remain on the detection unit 10. The residual seawater will affect the subsequent detection results of the detection unit 10 on seawater at other depths. When the connecting shell 8 enters the through hole through the above-mentioned mechanism, the push plate 30 will push the round rod 24, so that the round rod 24 drives the sponge ring 22 to move downward. At this time, the sponge ring 22 can clean the seawater remaining on the surface of the detection unit 10. Then, when the connecting shell 8 moves downward, the second spring will pull the retaining ring 23, so that the sponge ring 22 enters the annular groove 35. The retaining ring 23 can block the seawater to prevent the seawater from entering. Soaking the sponge ring 22 in water affects the cleaning effect of the detection unit 10; when the sponge ring 22 in the present application is reset, it will be squeezed by the annular groove 35 with the help of the second spring tension. At this time, the water adsorbed by the sponge ring 22 will be squeezed out, and the water will be discharged from the water outlet groove 25. When water enters the cavity 9, the floating ring 26 will float up to seal the water outlet groove 25 to prevent water from entering the annular groove 35; the floating ring 26 in the present application can be limited by the contact between the support plate 27 and the limit plate 28. When water enters the cavity 9, the floating ring 26 will rise with the help of buoyancy, thereby sealing the water outlet groove 25.

[0051] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0052] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing 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 therefore should not be understood as limiting the scope of protection of the present invention.

[0053] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A seawater quality detection device, comprising a floating plate (1); a water retaining ring (2) is fixedly connected to the top surface of the floating plate (1); a stabilizing cone (3) is fixedly connected to the bottom surface of the floating plate (1); and through holes are provided at the center of the floating plate (1) and the stabilizing cone (3); Features: A connecting shell (8) is arranged in the through hole, a cavity (9) is provided in the connecting shell (8), a detection unit (10) is arranged in the cavity (9), and a water inlet assembly is arranged on the connecting shell (8); A pair of fixed plates (4) are fixedly connected to the top surface of the floating plate (1); a rotating shaft (5) is rotatably connected between the fixed plates (4); a wire reel (7) is fixedly connected to the surface of the rotating shaft (5); a wire (6) is fixedly connected to the wire reel (7); an end of the wire (6) away from the wire reel (7) is fixedly connected to a connecting shell (8); and a motor for driving the rotating shaft (5) to rotate is provided on one side of the fixed plate (4); The water inlet assembly comprises a water inlet groove (11) provided on a side wall of the connecting shell (8), a chute (13) in communication with the water inlet groove (11) provided in the connecting shell (8), a sealing plate (12) made of a magnetic material provided in the chute (13), a first spring fixedly connected between the top surface of the sealing plate (12) and the inner wall of the chute (13), and an electromagnet (14) having a magnetic property to the sealing plate (12) fixedly connected to the top surface of the inner wall of the chute (13); A rectangular groove (15) is provided in the connection shell (8), and a group of rectangular plates (16) are sealingly and slidably connected to the inner wall of the rectangular groove (15). The rectangular plates (16) are fixed to each other via connecting rods (17). A water guide hole (18) connected to the rectangular groove (15) is provided on the bottom surface of the cavity (9). A driving mechanism for driving the rectangular plates (16) to move is provided in the connection shell (8). The sealing plate (12) is sealingly and slidably connected to the inner wall of the slide groove (13). The slide groove A connecting rod (17) is connected between the rectangular groove (13) and the rectangular groove (15); a connecting pipe (19) is connected between the rectangular groove (15) and the slide groove (13); an air outlet check valve is arranged in the connecting pipe (19); a first circular tube (20) is arranged on the side wall of the slide groove (13); an air intake check valve is arranged in the first circular tube (20); a second circular tube (21) connected to the rectangular groove (15) is arranged on the side wall of the connecting shell (8); a control valve is arranged in the second circular tube (21).

2. The seawater quality detection device according to claim 1, characterized in that: An annular groove (35) is provided on the top surface of the inner wall of the cavity (9); a retaining ring (23) is slidably connected to the inner wall of the annular groove (35); a sponge ring (22) is fixedly connected to the top surface of the retaining ring (23); a round rod (24) is sealingly slidably connected to the top surface of the connecting shell (8); the bottom surface of the round rod (24) is fixedly connected to the retaining ring (23); a second spring is fixedly connected between the top surface of the retaining ring (23) and the inner wall of the annular groove (35); and a push plate (30) for pushing the round rod (24) is provided on the inner wall of the through hole.

3. The seawater quality detection device according to claim 2, characterized in that: A group of inclined water outlet grooves (25) are provided on the top surface of the inner wall of the cavity (9), one end of the water outlet groove (25) is connected to the annular groove (35), and a floating ring (26) is provided in the cavity (9) to seal the water outlet groove (25).

4. The seawater quality detection device according to claim 3 is characterized in that: A fixing rod (29) is fixedly connected to the top surface of the cavity (9), a support plate (27) is slidably connected to the surface of the fixing rod (29), a side wall of the support plate (27) is fixedly connected to the floating ring (26), and a limiting disk (28) is fixedly connected to the bottom surface of the fixing rod (29).

5. The seawater quality detection device according to claim 4 is characterized in that: A filter screen (31) is fixedly connected to the inner wall of the water inlet trough (11); a side of the sealing plate (12) close to the filter screen (31) is fixedly connected to bristles (32); a side of the filter screen (31) away from the sealing plate (12) is fixedly connected to a group of first magnetic blocks (33); and a side of the sealing plate (12) close to the filter screen (31) is fixedly connected to a group of second magnetic blocks (34) that repel the first magnetic blocks (33).

6. A method for detecting the quality of seawater, the method using the device for detecting the quality of seawater as claimed in claim 5, characterized in that: The method comprises the following steps: S1: placing the floating board (1) on the water surface, driving the rotating shaft (5) to rotate with the help of a motor, causing the take-up wheel (7) to rotate, and the wire (6) to move downward, thereby allowing the connecting shell (8) to enter the water, and stopping the take-up wheel (7) from rotating until the connecting shell (8) reaches a specified depth; S2: The sealing plate (12) is sucked up by the electromagnet (14), and water enters the cavity (9) from the water inlet groove (11), and then contacts the detection unit (10) for detection. After the water quality detection is completed, the wire (6) is reversed and pulled by the take-up wheel (7), so that the connection shell (8) enters the through hole; S3: When the connecting shell (8) enters the through hole, the push plate (30) pushes the round rod (24), so that the round rod (24) drives the sponge ring (22) to move downward, and the sponge ring (22) can clean the seawater remaining on the surface of the detection unit (10); S4: When the connecting shell (8) descends, the second spring pulls the retaining ring (23), so that the sponge ring (22) is squeezed by the annular groove (35), and the water adsorbed by the sponge ring (22) is squeezed out. When the water enters the cavity (9), the floating ring (26) rises with the help of buoyancy to seal the water outlet groove (25).

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