Water pollution treatment equipment for liquid level meter measurement

By designing the connecting platform and sliding platform, and utilizing the elastic elements and magnets, the problem of difficult separation of O-rings in sewage tanks for level gauges was solved, achieving stable connection and convenient separation of O-rings, and improving the efficiency of maintenance and replacement.

CN121405166APending Publication Date: 2026-01-27JIANGSU CHILIAN IOT TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202511645171.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-11-11
Publication Date
2026-01-27

AI Technical Summary

Technical Problem

When level gauges are used in sewage tanks, the O-rings bear a large load and torsion, causing the flange and O-ring to stick together and become difficult to separate, affecting the convenience of maintenance and replacement.

Method used

A liquid level gauge measuring device was designed. By cooperating with the connecting platform and the sliding platform, and utilizing the elastic element and the magnet, a stable connection and convenient separation of the O-ring are achieved, reducing the load and damage to the O-ring.

Benefits of technology

It improves the sealing ability and stability of O-rings, simplifies the disassembly and assembly process, reduces damage to the structure, and improves the efficiency of maintenance and replacement.

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Abstract

The invention provides water pollution treatment equipment measured by a liquidometer, and belongs to the technical field of water pollution liquidometers, the water pollution treatment equipment comprises a liquidometer main body and a fixed connection cylinder I. A junction table is arranged on one side of the fixed connection cylinder I. A sliding table is arranged on one side, closer to the junction table, in the fixed connection cylinder I. A junction cylinder is arranged in the sliding table. The lower rod body part of the liquid level meter body is fixedly connected with the inner wall of the connecting cylinder, and one side of the sliding table is fixedly connected with the connecting ring. The problems that when a proper screw is matched to restrain a flange, the O-shaped ring bears a large amount of load and is distorted and sunken, so that the flange and the O-shaped ring are tightly attached, separation is not facilitated, convenient treatment is not facilitated in the period that the O-shaped ring needs to be replaced and a liquid level meter needs to be overhauled and cleaned, and especially in the situation that many attachments exist in a sewage pool, the sealing effect is poor are solved. And more frequent problems are solved.
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Description

Technical Field

[0001] This invention belongs to the field of water pollution level gauge technology, and specifically relates to a water pollution treatment device that uses a level gauge for measurement. Background Technology

[0002] A pressure level gauge is a sensor for measuring liquid level, including hydrostatic level gauges, level transmitters, level sensors, and water level sensors. It is based on the principle that the hydrostatic pressure of the measured liquid is proportional to the height of the liquid. It uses advanced foreign isolated diffused silicon sensing elements to convert the hydrostatic pressure into an electrical signal. After temperature compensation and linear correction, it is converted into a standard electrical signal. It is suitable for measuring the liquid level of various media in systems and industries such as petrochemical, metallurgy, power, pharmaceutical, water supply and drainage, and environmental protection.

[0003] During water pollution treatment, level gauges are needed to detect the content of wastewater. The assembly of level gauges is generally performed by sealing with flanges and O-rings. This requires the use of appropriate screws to constrain the flange, which puts a lot of load on the O-rings and causes them to twist and dent. This results in the flange and O-rings being tightly attached, which is not conducive to separation. When the O-rings need to be replaced or the level gauge needs to be repaired and cleaned, it is not convenient to handle the situation, especially in scenarios with a lot of deposits in wastewater tanks. Therefore, a water pollution treatment device with level gauge measurement is proposed. Summary of the Invention

[0004] This invention provides a water pollution treatment device for measuring liquid level, which aims to solve the problem that when using appropriate screws to constrain the flange, the O-ring bears a large load and twists and dents, resulting in the flange and O-ring being tightly attached, which is not conducive to separation. This makes it difficult to handle during O-ring replacement and liquid level gauge maintenance and cleaning, especially in scenarios with a lot of deposits such as sewage tanks.

[0005] This invention provides a water pollution treatment device for level gauge measurement, comprising a wastewater treatment tank, a measuring assembly assembly mounted on the wastewater treatment tank, an inlet channel and a dosing channel mounted on the upper part of the wastewater treatment tank, and an outlet channel mounted on the side of the wastewater treatment tank. The measuring assembly assembly includes a level gauge body and a fixed connecting cylinder. A connecting platform is mounted on one side of the fixed connecting cylinder, and a sliding platform is mounted on the side of the fixed connecting cylinder closer to the connecting platform. The connecting cylinder is mounted inside the sliding platform. The lower rod portion of the level gauge body is fixedly connected to the inner wall of the connecting cylinder, and a connecting ring is fixedly connected to one side of the sliding platform.

[0006] Preferably, one side of the connecting ring is fixedly connected to the first elastic element, and a first ring-shaped platform is installed on the side of the first elastic element farther from the connecting ring. The first ring-shaped platform and the side of the first elastic element farther from the connecting ring are fixedly connected. Multiple connecting rods are installed at equal intervals on the side of the first ring-shaped platform farther from the first elastic element, and a second ring-shaped platform is installed on the side of the multiple connecting rods farther from the first ring-shaped platform. The second ring-shaped platform is fixedly connected to the O-ring.

[0007] Preferably, each side of the connecting rod is fixedly connected to the first and second annular platforms, the sidewall of the sliding platform is provided with external threads, the inner wall of the connecting platform is provided with internal threads, and the sliding platform and the connecting platform are threaded together.

[0008] Preferably, the first fixed cylinder and the connecting platform are screwed together, and the sliding platform and the connecting cylinder are slidably connected. The sliding platform and the connecting ring are integral structures. The first and second ring-shaped platforms are each slidably connected to the inner wall of the first fixed cylinder. A protruding ring is fixed to one side wall of the first fixed cylinder. An indentation is reserved on the side of the first fixed cylinder closer to the protruding ring. Both the protruding ring and the indentation are ring-shaped.

[0009] Preferably, a second fixed cylinder is installed on one side of the first fixed cylinder, a channel is reserved in the second fixed cylinder, a connecting cylinder is fixed to the side of the second fixed cylinder farther from the first fixed cylinder, the connecting cylinder and the channel are connected to each other, a sealing connection part is installed on the side of the second fixed cylinder closer to the O-ring, and the sealing connection part is fixed to the side of the second fixed cylinder closer to the O-ring.

[0010] Preferably, the fixed ring body is fixedly connected to the side of the fixed cylinder two that is closer to the fixed cylinder one. A connecting outer ring is installed on the side wall of the fixed cylinder two. The connecting outer ring and the fixed cylinder two are connected by sliding. An elastic element two is installed inside the connecting outer ring. Both sides of the elastic element two are fixedly connected to the fixed cylinder two along with the connecting outer ring.

[0011] Preferably, the side of the fixed ring closer to the connecting platform has a mirror-image reserved stop ball cavity, and each of the two stop ball cavities is equipped with a ball. The side of the inner wall of the connecting outer ring closer to the ball is equipped with a stop protrusion.

[0012] Preferably, the stop protrusion and the connecting outer ring are fixedly connected, the stop protrusion and the connecting outer ring are integral structures, and the radial span of the sphere exceeds the length of both sides of the stop sphere cavity.

[0013] Preferably, the second annular platform has multiple connecting ports reserved at equal intervals in a ring shape, and a magnet is installed in each of the multiple connecting ports. The magnet is fixedly connected to the connecting port, and a fixing piece is installed on the side of the O-ring closer to the second annular platform.

[0014] Preferably, the fixing plate and the O-ring are fixed to the side closer to the second ring-shaped platform, the fixing plate is fixed to the second magnet, and the fixing plate and the O-ring are integrally constructed.

[0015] The beneficial effects of this invention are as follows: 1. In this invention, the connecting platform and the sliding platform are connected by a thread, allowing the sliding platform to slide along the direction of the connecting cylinder towards the position of the elastic element one. The sliding platform pulls the connecting ring to move, causing the connecting ring to pull the elastic element one. The elastic element one, under the pressure of the connecting ring, drives the ring-shaped platform two, thereby allowing the ring-shaped platform two to have a greater load on the O-ring, increasing the load between the O-ring and the sealing connection, and providing better sealing capability. To reduce the load during sealing, the connecting platform is rotated in the opposite direction, causing the connecting platform to pull the sliding platform to move in the opposite direction, reducing the load borne by the elastic element one, thereby reducing the load of the elastic element one acting on the O-ring.

[0016] 2. This invention connects the fixing plate to the connection port on the ring-shaped platform two, allowing the fixing plate to pull the magnet two and the magnet one in the connection port to interact with each other. The magnet has a traction force, which can firmly fix the O-ring in the appropriate position, allowing the operator to easily perform the separation action without the need for other equipment assistance. This reduces the probability of damage to the structure and O-ring during disassembly. The O-ring can be quickly and reliably fixed in the appropriate position, making replacement and maintenance cleaning more efficient and the assembly more stable.

[0017] 3. In this invention, the elastic element 2 drives the outer ring of the connector to slide towards the connecting platform. The outer ring of the connector pulls the stop protrusion to slide, thereby the ball bears the load of the stop protrusion. The ball is embedded in the recessed opening through the stop ball cavity, and the stop protrusion slides to the top of the ball, thereby achieving the fixed connection between the first connecting cylinder and the connecting cylinder. During disassembly, the outer ring of the connector is driven to one side, and the outer ring of the connector pulls the stop protrusion to slide, thereby releasing the constraint of the stop protrusion in the position of the ball. The second connecting cylinder is driven to one side, and the ball can separate from the recessed opening under external force, allowing the second connecting cylinder and the first connecting cylinder to be easily separated. Therefore, during the disassembly of the liquid level gauge body, it can be easily disassembled, which is more efficient and facilitates assembly and replacement.

[0018] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the main structure of the level gauge according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of the fixed connecting tube according to an embodiment of the present invention; Figure 3 This is a schematic diagram of a cross-sectional structure of the fixed-connecting cylinder according to an embodiment of the present invention; Figure 4 This is a schematic diagram of a fixed-connection cylinder structure according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the connecting cylinder and the fixed cylinder in an embodiment of the present invention; Figure 6 This is a schematic diagram of the internal structure of the fixed connecting tube II according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the two-section structure of the fixed-connection cylinder according to an embodiment of the present invention; Figure 8 Embodiments of the present invention Figure 7 Schematic diagram of the structure at point X; Figure 9 This is a schematic diagram of the cross-sectional structure of the O-ring according to an embodiment of the present invention; Figure 10 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure reference numerals: 11. Level gauge body; 111. Wastewater treatment tank; 112. Inlet channel; 113. Dosing channel; 114. Outlet channel; 12. Fixed cylinder one; 122. Protruding ring; 123. Recessed opening; 124. Fixed platform; 13. Connecting platform; 132. Sliding platform; 133. Connecting ring; 134. Elastic element one; 135. Ring-shaped platform one; 136. Connecting rod; 1 37. Ring-shaped platform II; 138. O-ring; 14. Connecting cylinder; 142. Channel I; 15. Fixed connecting cylinder II; 152. Sealing connection part; 153. Fixed connecting ring body; 154. Stop ball cavity; 155. Ball; 16. Connecting outer ring; 162. Elastic element II; 163. Stop protrusion; 19. Connecting port; 192. Magnet I; 193. Fixed connecting piece; 194. Magnet II. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] Reference Figures 1-10This invention provides a water pollution treatment device with a level gauge, comprising a wastewater treatment tank 111, a measuring assembly mounted on the wastewater treatment tank 111, an inlet channel 112 and a dosing channel 113 on the upper part of the wastewater treatment tank 111, and an outlet channel 114 on the side of the wastewater treatment tank 111. During operation, the level in the wastewater treatment tank 111 is measured. Wastewater enters the wastewater treatment tank 111 through the inlet channel 112 and reacts with the reagents added through the dosing channel 113, treating the wastewater before it is discharged from the outlet channel 114. The measuring assembly includes a level gauge body 11 and a fixed connection. Cylinder 12, with a connecting platform 13 installed on one side. A sliding platform 132 is installed on the side of cylinder 12 closer to the connecting platform 13. A connecting cylinder 14 is installed inside the sliding platform 132. The lower rod portion of the level gauge body 11 is fixedly connected to the inner wall of the connecting cylinder 14. A connecting ring 133 is fixedly connected to one side of the sliding platform 132. One side of the connecting ring 133 is fixedly connected to an elastic element 134 (a spring). A ring-shaped platform 135 is installed on the side of the elastic element 134 furthest from the connecting ring 133. The ring-shaped platform 135 and the side of the elastic element 134 furthest from the connecting ring 133 are fixedly connected. Ring-shaped platforms 135 are installed at equal intervals on the side of the elastic element 134 furthest from the elastic element 134. Multiple connecting rods 136 are provided. A second annular platform 137 is installed on the side of the connecting rods 136 further from the first annular platform 135. The second annular platform 137 is fixedly connected to an O-ring 138. The elastic element 134, through the pressure of the connecting ring 133, drives the second annular platform 137, thereby increasing the load on the O-ring 138 and improving the load between the O-ring 138 and the sealing connection 152, resulting in better sealing capability. Each connecting rod 136 is fixedly connected to both sides of the first annular platform 135 and the second annular platform 137. External threads are pre-drilled on the sidewall of the sliding platform 132, and internal threads are pre-drilled on the inner wall of the connecting platform 13. The sliding platform 132 and the connecting platform 13 are threaded together, allowing… The sliding platform 132 can slide along the direction of the connecting cylinder 14 toward the position of the elastic element 134, thereby allowing the sliding platform 132 to pull the connecting ring 133 to move, and the elastic element 134 to bear the load of the connecting ring 133; the fixed cylinder 12 and the connecting platform 13 are screwed together, the sliding platform 132 and the connecting cylinder 14 are slidably connected, the sliding platform 132 and the connecting ring 133 are integral structures, the annular platform 135 and the annular platform 2 137 are each slidably connected to the inner wall of the fixed cylinder 12, the protruding ring 122 is fixedly connected to the side wall of the fixed cylinder 12, and the side of the fixed cylinder 12 closer to the protruding ring 122 has a recessed opening 123 reserved, and both the protruding ring 122 and the recessed opening 123 are annularly installed.

[0022] Fixed cylinder 12 is connected to fixed cylinder 2 15 on one side. A passage 142 is reserved inside fixed cylinder 2 15. A connecting cylinder 14 is fixed to the side of fixed cylinder 2 15 furthest from fixed cylinder 12. Connecting cylinder 14 and passage 142 are interconnected. A sealing connection part 152 is installed on the side of fixed cylinder 2 15 closer to O-ring 138. The sealing connection part 152 is fixed to the side of fixed cylinder 2 15 closer to O-ring 138. O-ring 13... The sealing contact between the 8 and the sealing connection 152 enhances the sealing capability, reduces the resistance of the O-ring 138, and reduces contact loss. The fixing ring body 153 is fixed to the side of the fixing cylinder 2 15 closer to the fixing cylinder 1 12. A connecting outer ring 16 is installed on the side wall of the fixing cylinder 2 15, and the connecting outer ring 16 and the fixing cylinder 2 15 are connected by sliding. An elastic element 2 162 is installed inside the connecting outer ring 16, with elastic elements 2 162 having elastic elements on both sides... The outer ring 16 is fixedly connected to the second connecting cylinder 15. The second elastic element 162 can drive the outer ring 16 to slide towards the connecting platform 13, allowing the outer ring 16 to pull the stop protrusion 163 to slide, thereby the ball 155 bears the load of the stop protrusion 163. The side of the fixed ring 153 closer to the connecting platform 13 has a mirror image reserved stop ball cavity 154, and each of the two stop ball cavities 154 is equipped with a ball 155. The inner wall of the outer ring 16 is spaced from the wall of the connecting ring 16. A stop protrusion 163 is installed on the side closer to the sphere 155. The stop protrusion 163 and the connecting outer ring 16 are fixedly connected. The stop protrusion 163 and the connecting outer ring 16 are integral structures. The radial span of the sphere 155 exceeds the length of both sides of the stop ball cavity 154. The sphere 155 is embedded in the recess 123 through the stop ball cavity 154. The sphere 155 is constrained by the stop protrusion 163, so that the fixed cylinder 2 15 and the fixed cylinder 1 12 can be easily separated and replaced.

[0023] The circular platform 137 has multiple pre-reserved connecting ports 19 at equal intervals. Each connecting port 19 contains a magnet 192, which is fixedly connected to the connecting port 19. The O-ring 138 has a fixing plate 193 installed on the side closer to the circular platform 137. The fixing plate 193 is fixedly connected to the side of the O-ring 138 closer to the circular platform 137. The fixing plate 193 is also fixedly connected to the magnet 194. The fixing plate 193 and the O-ring 138 are integrated into one structure, allowing the fixing plate 193 to pull the magnet 194 and the magnet 192 in the connecting port 19 to interact with each other. This securely fixes the O-ring 138 in the appropriate position.

[0024] The specific implementation method is as follows: the fixed connecting cylinder 15 is assembled on the sewage treatment tank 111. During assembly, the line of the level gauge body 11 can pass through the connecting cylinder 14 and enter the sewage treatment tank 111 to measure the liquid level. During use, the operator connects the fixed connecting piece 193 to the connecting port 19 on the ring platform 137, so that the fixed connecting piece 193 pulls the magnet 194 and the magnet 192 in the connecting port 19 to interact with each other. The magnet has a traction force, which can firmly fix the O-ring 138 in the appropriate position, allowing the operator to easily perform the separation action without the need for other equipment assistance, reducing the probability of damage to the structure and O-ring during disassembly. The O-ring 138 can be quickly and reliably fixed in the appropriate position, making the replacement, maintenance and cleaning of the level gauge body 11 more efficient. Rotate the connecting platform 13. The connecting platform 13 and the sliding platform 132 are connected by a screw, allowing the sliding platform 132 to slide along the position of the connecting cylinder 14 towards the position of the elastic element 134. The sliding platform 132 pulls the connecting ring 133 to move, allowing the connecting ring 133 to pull the elastic element 134. The elastic element 134, through the pressure of the bearing connecting ring 133, drives the ring platform 137, thereby allowing the ring platform 137 to have a greater load on the O-ring 138, increasing the load between the O-ring 138 and the sealing connection 152, resulting in better sealing ability. To reduce the load during sealing, rotate the connecting platform 13 in the opposite direction. The connecting platform 13 pulls the sliding platform 132 to move in the opposite direction, reducing the load borne by the elastic element 134, thereby reducing the load of the elastic element 134 acting on the O-ring 138. Slide the outer connecting ring 16 toward the fixed connecting cylinder 15, and insert the fixed connecting cylinder 12 into the fixed connecting ring body 153. Release the outer connecting ring 16. The elastic element 2 162 drives the outer connecting ring 16 to slide toward the connecting platform 13. The outer connecting ring 16 pulls the stop protrusion 163 to slide, thereby the ball 155 bears the load of the stop protrusion 163. The ball 155 is embedded in the recess 123 through the stop ball cavity 154, and the stop protrusion 163 slides. Move it to the top of the sphere 155, thereby achieving a fixed connection between the first connecting cylinder 12 and the connecting cylinder 14. During disassembly, drive the outer connecting ring 16 to one side. The outer connecting ring 16 pulls the stop protrusion 163 to slide, thereby releasing the constraint of the stop protrusion 163 in the position of the sphere 155. Drive the second connecting cylinder 15 to one side. The sphere 155 can be separated from the recess 123 under external force, allowing the second connecting cylinder 15 and the first connecting cylinder 12 to be easily separated.

[0025] 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 this invention is defined by the appended claims and their equivalents.

Claims

1. A water pollution treatment device with a liquid level gauge, comprising a wastewater treatment tank (111), a measuring assembly mounted on the wastewater treatment tank (111), an inlet channel (112) mounted on the upper part of the wastewater treatment tank (111), a dosing channel (113) mounted on the upper part of the wastewater treatment tank (111), and an outlet channel (114) mounted on the side of the wastewater treatment tank (111). The measuring assembly comprises a liquid level gauge body (11) and a fixed cylinder (12), characterized in that... A connecting platform (13) is installed on one side of the fixed connecting cylinder (12). A sliding platform (132) is installed on the side of the fixed connecting cylinder (12) closer to the connecting platform (13). A connecting cylinder (14) is installed in the sliding platform (132). The lower rod part of the level gauge body (11) is fixedly connected to the inner wall of the connecting cylinder (14). A connecting ring (133) is fixedly connected to one side of the sliding platform (132).

2. The water pollution treatment equipment for level measurement according to claim 1, characterized in that: One side of the connecting ring (133) is fixedly connected to the first elastic element (134). The first elastic element (134) is further away from the connecting ring (133) and a ring-shaped platform (135) is installed on the side further away from the connecting ring (133). The ring-shaped platform (135) and the first elastic element (134) are fixedly connected on the side further away from the connecting ring (133). A plurality of connecting rods (136) are installed at equal intervals on the side further away from the first elastic element (134) of the ring-shaped platform (135). A second ring-shaped platform (137) is installed on the side further away from the first ring-shaped platform (135) of the plurality of connecting rods (136). The second ring-shaped platform (137) is fixedly connected to the O-ring (138).

3. The water pollution treatment equipment for level measurement according to claim 2, characterized in that: The connecting rod (136) is fixedly connected to the first ring platform (135) and the second ring platform (137) on both sides. The sliding platform (132) has external threads on its side wall and internal threads on its inner wall. The sliding platform (132) and the connecting platform (13) are threaded together.

4. A water pollution treatment device for measuring liquid level according to claim 3, characterized in that: The first fixed cylinder (12) and the connecting platform (13) are screwed together, and the sliding platform (132) and the connecting cylinder (14) are slidably connected. The sliding platform (132) and the connecting ring (133) are integral structures. The first ring platform (135) and the second ring platform (137) are each slidably connected to the inner wall of the first fixed cylinder (12). The side wall of the first fixed cylinder (12) is fixed with a protruding ring (122). The side of the first fixed cylinder (12) closer to the protruding ring (122) has a recessed opening (123). The protruding ring (122) and the recessed opening (123) are both ring-shaped.

5. A water pollution treatment device for measuring liquid level according to claim 4, characterized in that: One side of the first fixed cylinder (12) is fitted with a second fixed cylinder (15), and a channel (142) is reserved in the second fixed cylinder (15). The side of the second fixed cylinder (15) further away from the first fixed cylinder (12) is fixed with a connecting cylinder (14). The connecting cylinder (14) and the channel (142) are connected to each other. The side of the second fixed cylinder (15) closer to the O-ring (138) is fitted with a sealing connection part (152). The sealing connection part (152) and the side of the second fixed cylinder (15) closer to the O-ring (138) are fixed together.

6. A water pollution treatment device for measuring liquid level according to claim 5, characterized in that: The fixed cylinder two (15) is fixed to the fixed ring body (153) on the side closer to the fixed cylinder one (12). The fixed cylinder two (15) has a connecting outer ring (16) installed on its side wall. The connecting outer ring (16) and the fixed cylinder two (15) are connected by sliding. The connecting outer ring (16) has an elastic element two (162) installed inside. The elastic element two (162) is fixed to the fixed cylinder two (15) on both sides, along with the connecting outer ring (16).

7. A water pollution treatment device for measuring liquid level according to claim 6, characterized in that: The fixed ring (153) has a mirror image of the side closer to the connecting platform (13) with a reserved stop ball cavity (154), and each of the two stop ball cavities (154) is equipped with a ball (155). The inner wall of the connecting outer ring (16) is equipped with a stop protrusion (163) closer to the ball (155).

8. A water pollution treatment device for measuring liquid level according to claim 7, characterized in that: The stop protrusion (163) and the connecting outer ring (16) are fixedly connected. The stop protrusion (163) and the connecting outer ring (16) are integral structures. The radial span of the sphere (155) exceeds the length of both sides of the stop sphere cavity (154).

9. A water pollution treatment device for measuring liquid level according to claim 8, characterized in that: The circular platform 2 (137) has multiple connecting ports (19) reserved at equal intervals in a circular shape. Each of the multiple connecting ports (19) is equipped with a magnet 1 (192). The magnet 1 (192) and the connecting port (19) are fixedly connected. The O-ring (138) is equipped with a fixing piece (193) on the side closer to the circular platform 2 (137).

10. A water pollution treatment device for measuring liquid level according to claim 9, characterized in that: The fixed piece (193) and the O-ring (138) are fixed to the side closer to the second ring platform (137), the fixed piece (193) and the second magnet (194) are fixed together, and the fixed piece (193) and the O-ring (138) are integrally constructed.