An oxygen content sensor structure with self-cleaning function

Abstract

The application discloses a kind of oxygen content sensor structures with self-cleaning function, it is related to sensor technical field, including sealed shell;Rotary motor is fixedly arranged in the inside middle side of sealed shell, and the transmission shaft bottom of rotary motor is inserted and fixedly installed with cleaning assembly, by setting cleaning assembly and fixed component in the bottom side of sealed shell, by adjusting the length of combined support rod extension mobile shell to realize the adjusting action of whether the bottom of mobile shell touches ground, so as to be applicable to different water body basement situation, by the expansion and contraction action of plugging air bag to solve the water body oxygen content detection under static and flowing state, to improve the diversity function of water detection, and via rotary table and its internal piston plate, while cleaning detection window, self-cleaning action of cleaning brush can also be realized, improve the self-cleaning effect of overall device.

Description

Technical Field

[0001] This invention relates to the field of sensor technology, specifically to an oxygen content sensor structure with a self-cleaning function. Background Technology

[0002] An oxygen sensor is a device used to measure the oxygen concentration in a specific environment and convert the data into an electrical signal. It plays an important role in many fields. A sensor with a self-cleaning function is a sensor that can automatically clean its own surface. It is usually used in harsh environments or scenarios that require long-term stable operation.

[0003] The cleaning mechanisms of existing self-cleaning sensors may not be able to completely remove all contaminants, especially in extreme environments or after prolonged use, where some contaminants may still remain, affecting sensor performance. At the same time, the fixing structures of existing sensors are mostly simple and difficult to adapt to the complex conditions of different water bodies, causing the sensor body to easily touch the bottom. However, when the sensor touches the bottom, factors such as mud at the bottom of the water body can lead to inaccurate sensor data. Summary of the Invention

[0004] Therefore, in order to overcome the above-mentioned shortcomings, the present invention provides an oxygen content sensor structure with a self-cleaning function.

[0005] This invention is implemented as follows: An oxygen content sensor structure with a self-cleaning function is constructed. The device includes a sealed housing; a rotary motor is fixedly installed inside the sealed housing, and a cleaning component is inserted and fixedly installed at the bottom of the drive shaft of the rotary motor; a through hole is fixedly provided on both the left and right sides inside the sealed housing, and a fixing component is inserted into the through hole; a PCB board is provided on the top side inside the sealed housing, and the top of the PCB board is fixedly connected to an external cable.

[0006] The fixing assembly includes an electric propulsion assembly fixedly disposed at the through holes on the left and right sides inside the sealed housing; a movable housing is fixedly disposed at the bottom of the electric propulsion assembly; an adjustable support rod assembly is fixedly installed inside the movable housing; a sealing block with a separating function is fixedly disposed inside the movable housing by adhesive; a first coil component is fixedly disposed on the middle side inside the sealing block by bolts; a flexible metal sheet is fixedly disposed on the top side inside the sealing block; and a sealing airbag with a sealing function is adhesively fixedly disposed on the top of the flexible metal sheet.

[0007] Preferably, the electric propulsion assembly includes a sealed outer cylinder fixedly installed at the through holes on the left and right sides inside the sealed housing; a magnetically shielded inner cylinder is fixedly installed inside the middle side of the sealed outer cylinder; six sets of annular grooves are equidistantly arranged from top to bottom on the inner wall of the magnetically shielded inner cylinder, and an electromagnetic block is fixedly arranged inside the annular groove; the side of the electromagnetic block is fixedly connected to the current controller connector via a cable, and the current controller is fixedly arranged on the outer wall of the magnetically shielded inner cylinder.

[0008] Preferably, a timing controller is fixedly installed on the outer wall of the front side of the magnetically shielded inner cylinder by bolts, and the timing controller is fixedly connected to the current controller by a cable; a second permanent magnet block is slidably arranged on the inner wall of the annular groove of the magnetically shielded inner cylinder; a connecting rod is inserted into the bottom of the second permanent magnet block, and the bottom of the connecting rod is fixedly connected to the top of the movable housing.

[0009] Preferably, the strut assembly includes a second coil component fixedly installed in the arc-shaped groove on the side of the sealing block, and the second coil component specifically consists of a housing, a coil disposed inside the housing, and a cast iron plate fixedly disposed in the side through groove of the housing; a combined strut is slidably disposed in the side through groove of the housing of the second coil component.

[0010] Preferably, the internal coil of the second coil component is fixedly mounted with a pulse power supply via a cable, and the pulse power supply is fixedly mounted on the side of the sealing partition plate; a sensing element with data acquisition function is fixedly mounted on the inner wall of the arc-shaped groove on the side of the sealing partition by adhesive.

[0011] Preferably, the cleaning component includes a rotating frame fixedly installed at the bottom of the rotary motor drive shaft inside the sealed housing; filter screen holes are provided at the middle of the left and right sides of the rotating frame, and tapered holes are provided at the ends of the left and right sides of the rotating frame; cleaning brushes with cleaning function are fixedly provided on the upper and lower sides of the ends of the left and right sides of the rotating frame.

[0012] Preferably, the rotating frame has a sliding groove inside, and a first permanent magnet block is slidably disposed on the sliding groove; a third coil component is fixedly installed on the middle side of the rotating frame by bolts, and the first permanent magnet block and piston plate are slidably disposed inside the rotating frame; the first permanent magnet block is glued and fixedly installed on the side of the piston plate; the ratio of the length of the sliding groove inside the rotating frame to the length of the piston plate is 2:1.

[0013] Preferably, a telescopic cylinder is provided at the connection between the side through hole of the rotating frame and the rotary motor inside the sealed housing, and a horizontal groove is provided at the bottom of the sealed housing for placing the rotating frame.

[0014] Preferably, the filter mesh and conical holes on the rotating frame are both provided with filter membranes for filtration, and the conical holes have a conical structure that is wider at the top and narrower at the bottom.

[0015] A method of using an oxygen content sensor structure with self-cleaning function includes the following steps:

[0016] Step 1: Installation and Adjustment; The staff places the device in the water body to be tested and connects it to the external control terminal via an external cable. The fixed components are then controlled by the external control terminal to perform the adjustment steps. Since the water flow is easily affected by debris at the bottom of the water body, the external control terminal provides power to the pulse power supply, thereby energizing the second coil component in a timely manner to attract the sliding combination support rod. Due to gravity, the sealed housing and the moving housing slide downwards, thereby adjusting the length of the combination support rod extending out of the moving housing, and thus adjusting whether the bottom of the moving housing touches the ground.

[0017] Step 2: Flowing water data sensing; then, the control terminal controls the electric propulsion assembly and the telescopic cylinder at the end of the rotary motor drive shaft inside the sealed housing to work synchronously. Thus, the timing controller in the electric propulsion assembly is gradually energized from top to bottom, and the current controller outputs electrical energy to the electromagnetic block. Here, the magnetic field relationship between the electromagnetic block and the second permanent magnet block drives the second permanent magnet block and its bottom connecting rod to move down synchronously. Six sets of electromagnetic blocks and timing controllers are set here to realize six-level propulsion adjustment of the second permanent magnet block, thereby pushing the sealed housing and the moving housing to separate and adjust their distance. Here, the water flows into the gap between the sealed housing and the moving housing, and then the oxygen content of the water is detected by the sensing elements inside the sealed housing and the moving housing.

[0018] Step 3: Static Fluid Data Sensing; Since some of the water to be detected is in a static state, the first coil is intermittently powered through the PCB board inside the sealed housing and the external control terminal. The first coil generates magnetism when energized, causing the flexible metal sheet to bend up and down in a wave-like motion. The top of the flexible metal sheet squeezes the sealing airbag out of the through hole at the top of the moving housing. The expansion and contraction of the sealing airbag creates a pressure difference between the gap between the sealed housing and the moving housing and the external environment, thereby causing the static water around the sealed housing to flow through the gap between the sealed housing and the moving housing. The oxygen content of the water is detected by the sensing elements inside the sealed housing and the moving housing.

[0019] Step 4: Adjust and clean; Simultaneously, the rotary motor and the third coil inside the sealed housing are energized. The rotary motor drives the rotating frame to swing left and right in a fan shape, cleaning the detection window above the sensing element inside the moving housing. At the same time, during the rotation of the rotating frame, water will enter the rotating frame through the filter screen and the conical hole. At this time, the third coil is energized and magnetized, pushing the first permanent magnet block and the piston plate to slide inside the rotating frame. Since the piston plate slides and blocks the filter screen, the water is squeezed by the piston plate and flows out through the conical hole to rinse and clean the cleaning brush, thereby improving the cleaning effect of the cleaning brush.

[0020] The present invention has the following advantages: By providing an improved oxygen content sensor structure with a self-cleaning function, the present invention offers the following improvements compared to similar devices:

[0021] The oxygen content sensor structure with self-cleaning function described in this invention features a cleaning component and a fixing component on the bottom side of a sealed housing. Adjusting the length of the combined support rod extending from the movable housing allows for control over whether the bottom of the movable housing touches the ground, making it suitable for different water substrate conditions. The expansion and contraction of the sealing airbag addresses oxygen content detection in both static and flowing water states, thereby improving the versatility of water detection. Furthermore, the rotating frame and its internal piston plate enable the self-cleaning action of the cleaning brush while cleaning the detection window, enhancing the overall self-cleaning effect of the device. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the internal structure of the sealing housing of the present invention;

[0024] Figure 3 This is an exploded structural diagram of the sealing housing, cleaning component, and fixing component of the present invention;

[0025] Figure 4 This is an exploded view of the fixed component of the present invention;

[0026] Figure 5 This is a cross-sectional view of the electric propulsion component of the present invention;

[0027] Figure 6 This is a schematic diagram of the axial structure of the strut assembly of the present invention;

[0028] Figure 7 This is a cross-sectional view of the cleaning component of the present invention.

[0029] The components include: sealed housing-1, cleaning assembly-2, fixing assembly-3, external cable-4, rotating frame-21, filter screen hole-22, conical hole-23, cleaning brush-24, third coil component-25, first permanent magnet block-26, piston plate-27, electric propulsion assembly-31, moving housing-32, support rod assembly-33, sealing partition block-34, first coil component-35, flexible metal sheet-36, sealing airbag-37, sealed outer cylinder-311, magnetically shielded inner cylinder-312, electromagnetic block-313, current controller-314, timing controller-315, second permanent magnet block-316, second coil component-331, combined support rod-332, pulse power supply-333, and sensing element-334. Detailed Implementation

[0030] The following is in conjunction with the appendix Figures 1-7 The principles and features of the present invention are described below. The examples given are for illustrative purposes only and are not intended to limit the scope of the invention. The invention is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the invention.

[0031] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "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.

[0032] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The embodiments of this invention will now be described according to its overall structure.

[0033] Example 1:

[0034] Please see Figures 1-7 The present invention discloses an oxygen content sensor structure with self-cleaning function, comprising a sealed housing 1; a rotary motor is fixedly installed in the middle of the sealed housing 1, and a cleaning component 2 is fixedly installed at the bottom of the drive shaft of the rotary motor; a through hole is fixedly provided on both the left and right sides of the sealed housing 1, and a fixing component 3 is inserted into the through hole; a PCB board is provided on the top side of the sealed housing 1, and the top of the PCB board is fixedly connected to an external cable 4.

[0035] The fixed assembly 3 includes an electric propulsion assembly 31 fixedly installed at the through holes on the left and right sides inside the sealed housing 1; a movable housing 32 is fixedly installed at the bottom of the electric propulsion assembly 31; a support rod assembly 33 with an adjustment function is fixedly installed inside the movable housing 32; a sealing block 34 with a separation function is fixedly installed inside the movable housing 32 by adhesive; a first coil component 35 is fixedly installed on the middle side inside the sealing block 34 by bolts; a flexible metal sheet 36 is fixedly installed on the top side inside the sealing block 34; a sealing airbag 37 with a sealing function is adhesively fixedly installed on the top of the flexible metal sheet 36, and a sealing liquid is adhesively installed at the contact point between the top hole wall of the movable housing 32 and the sealing airbag 37.

[0036] The electric propulsion assembly 31 includes a sealed outer cylinder 311 fixedly installed inside the sealed housing 1 at the through holes on the left and right sides; a magnetically shielded inner cylinder 312 is fixedly installed inside the middle side of the sealed outer cylinder 311; six sets of annular grooves are equidistantly arranged from top to bottom on the inner wall of the magnetically shielded inner cylinder 312, and an electromagnetic block 313 is fixedly installed inside the annular groove; the side of the electromagnetic block 313 is fixedly connected to the junction plate of the current controller 314 via a cable, and the current controller 314 is fixedly installed on the outer wall of the magnetically shielded inner cylinder 312; a timing controller 315 is fixedly installed on the front outer wall of the magnetically shielded inner cylinder 312 via bolts, and the timing controller 315 is fixedly connected to the current controller 314 via a cable; a second permanent magnet block 316 is slidably arranged on the inner wall of the annular groove of the magnetically shielded inner cylinder 312; a connecting rod is inserted into the bottom of the second permanent magnet block 316, and the bottom of the connecting rod is fixedly connected to the top of the movable housing 32.

[0037] The strut assembly 33 includes a second coil component 331 fixedly installed in the arc-shaped groove on the side of the sealing block 34. The second coil component 331 specifically consists of a housing, a coil disposed inside the housing, and a cast iron plate fixedly disposed in the side through groove of the housing. A combined strut 332 is slidably disposed in the side through groove of the housing of the second coil component 331. A pulse power supply 333 is fixedly installed inside the coil of the second coil component 331 via a cable, and the pulse power supply 333 is fixedly disposed on the side of the sealing block 34 plate. A sensing element 334 with data acquisition function is fixedly installed on the inner wall of the arc-shaped groove on the side of the sealing block 34 by adhesive.

[0038] Example 2:

[0039] Please see Figures 1-7The present invention provides an oxygen content sensor structure with a self-cleaning function. Compared with Embodiment 1, this embodiment further includes: a cleaning component 2 comprising a rotating frame 21 fixedly installed inside the sealed housing 1 at the bottom of the rotary motor drive shaft; filter screen holes 22 are provided at the middle of the left and right sides of the rotating frame 21, and tapered holes 23 are provided at the ends of the left and right sides of the rotating frame 21; cleaning brushes 24 with cleaning function are fixedly installed on the upper and lower sides of the ends of the left and right sides of the rotating frame 21; a sliding groove is provided inside the rotating frame 21, and a first permanent magnet block 26 is slidably arranged on the sliding groove; a third coil component 25 is fixedly installed on the middle side of the rotating frame 21 by bolts, and the first permanent magnet block 26 and piston plate 27 are slidably arranged inside the rotating frame 21; the first permanent magnet block 26 is adhesively fixedly installed on the side of the piston plate 27; the ratio of the length of the sliding groove inside the rotating frame 21 to the length of the piston plate 27 is 2:1.

[0040] A telescopic cylinder is provided at the connection between the side through hole of the rotating frame 21 and the rotary motor inside the sealing housing 1, and a horizontal groove is provided at the bottom of the sealing housing 1 for placing the rotating frame 21; the filter mesh holes 22 and the conical holes 23 on the rotating frame 21 are both provided with filter membranes for filtration, and the conical holes 23 have a conical structure that is wider at the top and narrower at the bottom.

[0041] The working principle of the oxygen sensor structure with self-cleaning function described above is as follows:

[0042] First, when using this device, place it in the work area, and then connect it to an external power source to provide the power required for its operation.

[0043] Second, the staff places the device in the water body to be tested and connects the device to the external control terminal through the external cable 4; and controls the fixed component 3 to perform the adjustment steps through the external control terminal. Since the water body is easily affected by debris at the bottom of the water body, the water flows under the sealed shell 1. At this time, the external control terminal provides power to the pulse power supply 333 to control the second coil component 331 to be energized in time and attract the side-sliding combined support rod 332. Due to gravity, the sealed shell 1 and the moving shell 32 slide downward, thereby adjusting the length of the combined support rod 332 extending out of the moving shell 32, and realizing the adjustment action of whether the bottom of the moving shell 32 touches the ground.

[0044] Third, the control terminal then controls the telescopic cylinder at the end of the rotary motor drive shaft inside the electric propulsion assembly 31 and the sealed housing 1 to work synchronously. As a result, the timing controller 315 in the electric propulsion assembly 31 is gradually energized from top to bottom, and the current controller 314 outputs electrical energy to the electromagnetic block 313. Here, the magnetic field relationship between the electromagnetic block 313 and the second permanent magnet block 316 pushes the second permanent magnet block 316 and its bottom connecting rod to move down synchronously. Six sets of electromagnetic blocks 313 and timing controllers 315 are set here to realize six-level propulsion adjustment of the second permanent magnet block 316, thereby pushing the sealed housing 1 and the moving housing 32 to separate and adjust their distance. Here, water flows into the gap between the sealed housing 1 and the moving housing 32, and the oxygen content of the water is detected by the sensing element 334 inside the sealed housing 1 and the moving housing 32.

[0045] Fourth, since some of the water to be tested is in a static state, the first coil 35 is intermittently powered through the PCB board inside the sealed housing 1 and the external control terminal. The first coil 35 is energized and magnetized, which drives the flexible metal sheet 36 to perform a wave-like motion of bending up and down. The top of the flexible metal sheet 36 squeezes the sealing airbag 37 out of the top through hole of the moving housing 32. The expansion and contraction of the sealing airbag 37 creates a pressure difference between the gap between the sealed housing 1 and the moving housing 32 and the external environment, thereby causing the static water around the sealed housing 1 to flow through the gap between the sealed housing 1 and the moving housing 32. The oxygen content of the water is detected by the sensing element 334 inside the sealed housing 1 and the moving housing 32.

[0046] Fifth, by simultaneously energizing the rotary motor and the third coil 25 inside the sealed housing 1, the rotary motor drives the rotating frame 21 to swing left and right in a fan shape to clean the detection window above the sensing element 334 inside the moving housing 32. At the same time, during the rotation of the rotating frame 21, water will enter the interior of the rotating frame 21 through the filter screen hole 22 and the conical hole 23. At this time, the third coil 25 is energized and generates magnetism, which pushes the first permanent magnet block 26 and the piston plate 27 to slide inside the rotating frame 21. Since the piston plate 27 slides and blocks the filter screen hole 22, the water is squeezed by the piston plate 27 and flows out through the conical hole 23 to rinse and clean the cleaning brush 24, so as to improve the cleaning effect of the cleaning brush 24.

[0047] This invention provides an improved oxygen sensor structure with a self-cleaning function. By setting a cleaning component 2 and a fixing component 3 on the bottom side of the sealed housing 1, the length of the combined support rod 332 extending out of the movable housing 32 can be adjusted to determine whether the bottom of the movable housing 32 touches the ground, making it suitable for different water substrate conditions. The expansion and contraction of the sealing airbag 37 solves the problem of detecting oxygen content in water under static and flowing conditions, thereby improving the versatility of water detection. Furthermore, the self-cleaning action of the cleaning brush 24 can be achieved simultaneously with the cleaning of the detection window via the rotating frame 21 and its internal piston plate 27, improving the overall self-cleaning effect of the device.

[0048] The above description shows and illustrates the basic principles, main features, and advantages of the present invention. Standard parts used in the present invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0049] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An oxygen content sensor structure with self-cleaning function, comprising a sealed housing (1); characterized in that: A rotary motor is fixedly installed inside the middle side of the sealed housing (1), and a cleaning component (2) is fixedly installed at the bottom of the drive shaft of the rotary motor; a through hole is fixedly installed on both the left and right sides inside the sealed housing (1), and a fixing component (3) is inserted into the through hole; a PCB board is installed on the top side inside the sealed housing (1), and the top of the PCB board is fixedly connected to an external cable (4); The fixing component (3) includes an electric propulsion component (31) fixedly installed at the through holes on the left and right sides inside the sealed housing (1); a movable housing (32) is fixedly installed at the bottom of the electric propulsion component (31); a support rod component (33) with an adjustment function is fixedly installed inside the movable housing (32); a sealing block (34) with a separation function is fixedly installed inside the movable housing (32) by adhesive; a first coil component (35) is fixedly installed on the middle side inside the sealing block (34) by bolts; a flexible metal sheet (36) is fixedly installed on the top side inside the sealing block (34); a sealing airbag (37) with a sealing function is adhesively fixedly installed on the top of the flexible metal sheet (36). The cleaning component (2) includes a rotating frame (21) fixedly installed inside the sealed housing (1) at the bottom of the rotary motor drive shaft; the middle of the left and right sides of the rotating frame (21) is provided with a filter screen hole (22), and the ends of the left and right sides of the rotating frame (21) are provided with a tapered hole (23); the upper and lower sides of the ends of the left and right sides of the rotating frame (21) are fixedly provided with cleaning brushes (24) with cleaning function; a sliding groove is provided inside the rotating frame (21), and a first permanent magnet block (26) is slidably arranged on the sliding groove; a third coil component (25) is fixedly installed inside the rotating frame (21) by bolts, and the first permanent magnet block (26) and piston plate (27) are slidably arranged inside the rotating frame (21); the first permanent magnet block (26) is glued and fixedly installed on the side of the piston plate (27); the length ratio of the sliding groove inside the rotating frame (21) to the length of the piston plate (27) is 2:

1.

2. The oxygen content sensor structure with self-cleaning function according to claim 1, characterized in that: The electric propulsion assembly (31) includes a sealed outer cylinder (311) fixedly installed at the through holes on the left and right sides inside the sealed housing (1); a magnetically shielded inner cylinder (312) is fixedly installed inside the middle side of the sealed outer cylinder (311); six sets of annular grooves are equidistantly arranged from top to bottom on the inner wall of the magnetically shielded inner cylinder (312), and an electromagnetic block (313) is fixedly arranged inside the annular groove; the side of the electromagnetic block (313) is fixedly connected to the current controller (314) terminal piece through a cable, and the current controller (314) is fixedly arranged on the outer wall of the magnetically shielded inner cylinder (312).

3. The oxygen content sensor structure with self-cleaning function according to claim 2, characterized in that: The outer front wall of the magnetic shielding inner cylinder (312) is fixedly installed with a timing controller (315) by bolts, and the timing controller (315) is fixedly connected to the current controller (314) by a cable; a second permanent magnet block (316) is slidably arranged on the inner wall of the annular groove of the magnetic shielding inner cylinder (312); a connecting rod is inserted into the bottom of the second permanent magnet block (316), and the bottom of the connecting rod is fixedly connected to the top of the movable housing (32).

4. The oxygen content sensor structure with self-cleaning function according to claim 3, characterized in that: The strut assembly (33) includes a second coil component (331) fixedly installed in the arc groove on the side of the sealing block (34), and the second coil component (331) specifically consists of a housing, a coil disposed inside the housing, and a cast iron plate fixedly disposed in the side through groove of the housing; a combined strut (332) is slidably disposed in the side through groove of the housing of the second coil component (331).

5. The oxygen content sensor structure with self-cleaning function according to claim 4, characterized in that: The second coil component (331) has a pulse power supply (333) fixedly installed inside the coil via a cable, and the pulse power supply (333) is fixedly installed on the side of the sealing block (34) plate; a sensing element (334) with data acquisition function is fixedly installed on the inner wall of the arc groove on the side of the sealing block (34) by adhesive.

6. The oxygen content sensor structure with self-cleaning function according to claim 5, characterized in that: A telescopic cylinder is provided at the connection between the side through hole of the rotating frame (21) and the rotary motor inside the sealing housing (1), and a horizontal groove is provided at the bottom of the sealing housing (1) for placing the rotating frame (21).

7. The oxygen content sensor structure with self-cleaning function according to claim 6, characterized in that: The filter mesh (22) and the conical hole (23) on the rotating frame (21) are both provided with filter membranes for filtration, and the conical hole (23) has a conical structure that is wider at the top and narrower at the bottom.

8. A method of using an oxygen content sensor structure with a self-cleaning function, implementing the oxygen content sensor structure with a self-cleaning function as described in claim 7, characterized in that: Includes the following steps: Step 1: Adjustment and installation; The staff places the device in the water body to be tested and connects the device to the external control terminal through the external cable (4); and controls the fixed component (3) to perform the adjustment steps through the external control terminal. Since the water body is easily affected by debris at the bottom of the water body, the water flows under the sealed shell (1). At this time, the external control terminal provides power to the pulse power supply (333) to control the second coil component (331) to be energized in time and attract the side sliding combined support rod (332). Due to gravity, the sealed shell (1) and the moving shell (32) slide downwards, thereby adjusting the length of the combined support rod (332) extending out of the moving shell (32) to achieve the adjustment action of whether the bottom of the moving shell (32) touches the ground. Step 2: Flowing water data sensing; then, through the control terminal, the telescopic cylinder at the end of the rotary motor drive shaft inside the sealed housing (1) is controlled to work synchronously, so that the timing controller (315) in the electric propulsion assembly (31) is gradually energized from top to bottom, and the current controller (314) outputs electrical energy to the electromagnetic block (313). Here, the magnetic field relationship between the electromagnetic block (313) and the second permanent magnet block (316) drives the second permanent magnet block (316) and its bottom connecting rod to move down synchronously. Here, six sets of electromagnetic blocks (313) and timing controllers (315) are set to realize the six-level propulsion adjustment of the second permanent magnet block (316), thereby pushing the sealed housing (1) and the moving housing (32) to separate and adjust their distance. Here, the water flows into the gap between the sealed housing (1) and the moving housing (32), and then the oxygen content of the water is detected by the sensing element (334) inside the sealed housing (1) and the moving housing (32). Step 3: Sensing of static fluid data; Since some of the water to be detected is in a static state, the first coil (35) is intermittently powered by the PCB board inside the sealed housing (1) and the external control terminal. The first coil (35) is energized and magnetized, which drives the flexible metal sheet (36) to make a wave-like motion of bending up and down. The top of the flexible metal sheet (36) squeezes the sealing airbag (37) out of the top through hole of the moving housing (32). The expansion and contraction of the sealing airbag (37) causes a pressure difference between the gap between the sealed housing (1) and the moving housing (32) and the external environment, thereby driving the static water around the sealed housing (1) to flow through the gap between the sealed housing (1) and the moving housing (32). The oxygen content of the water is detected by the sensing element (334) inside the sealed housing (1) and the moving housing (32). Step 4: Adjust and clean; Simultaneously, by controlling the rotary motor and the third coil (25) inside the sealed housing (1) to be energized synchronously, the rotary motor drives the rotating frame (21) to swing left and right in a fan shape to clean the detection window above the sensing element (334) inside the moving housing (32). At the same time, during the rotation of the rotating frame (21), water will enter the interior of the rotating frame (21) through the filter screen hole (22) and the conical hole (23). At this time, the third coil (25) is energized and magnetized to push the first permanent magnet block (26) and the piston plate (27) to slide inside the rotating frame (21). Since the piston plate (27) slides and blocks the filter screen hole (22), the water is squeezed by the piston plate (27) and flows out through the conical hole (23) to rinse and clean the cleaning brush (24) in order to improve the cleaning effect of the cleaning brush (24).

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