An online monitoring and early warning device for sewage biological toxicity

Abstract

The present invention discloses an online monitoring and early warning device for biological toxicity of sewage, comprising a floating traction mechanism and an underwater water intake mechanism. The floating traction mechanism is used for towing a water pipe on the water surface, wherein the floating traction mechanism comprises a floating frame and a rudder plate, and the underwater water intake mechanism is used for sampling sewage at different depths underwater, wherein the underwater water intake mechanism comprises an air pipe and an impurity separation component, and the floating traction mechanism pulls the water pipe when floating on the water surface, and the floating frame floats on the water surface to tow the underwater water intake mechanism underwater to a position away from the shore, and by adjusting the depth of the underwater water intake mechanism in the water, the sampling is not easily affected by impurities and dirt on the bottom or surface of the water, thereby improving the accuracy of the sampling. The online monitoring and early warning device for biological toxicity of sewage solves the problem in the prior art that the sewage toxicity monitoring device may be affected by residual dirt when sampling in sewage.

Description

Technical Field

[0001] The invention relates to the technical field of sewage water quality monitoring, and in particular to an online monitoring and early warning device for sewage biological toxicity. Background Art

[0002] Sewage refers to the domestic drainage of residents or the wastewater discharged from industrial production. There are many kinds of dirt and harmful substances in sewage. Once sewage is mixed with rivers or groundwater sources, it will have a great impact on the water source environment. The biological toxic substances in sewage will cause serious harm to aquatic organisms and even lead to the collapse of the entire ecosystem. Toxic substances in water bodies not only threaten aquatic organisms, but may also ultimately affect human health through the food chain. By monitoring the biological toxicity in sewage, it is possible to prevent the potential harm of toxic substances to human health through drinking water or the food chain, and ensure the health and safety of the public. By monitoring the biological toxicity of sewage, the source of pollution can be tracked and identified, and relevant enterprises and departments can be urged to take effective measures to reduce the discharge of toxic substances. After highly toxic substances are found in industrial wastewater, enterprises can improve production processes, use more environmentally friendly raw materials, and reduce the generation and discharge of toxic substances from the source. Therefore, it is very important to monitor the biological toxic substances in sewage and issue alarms in time.

[0003] Existing sewage monitoring equipment can monitor sewage in a variety of ways, including physical monitoring, chemical monitoring, biological monitoring and other monitoring methods. Among them, the most commonly used is the portable sewage toxicity monitoring device. The sampling head on the sewage toxicity monitoring device is placed in the sewage, and the sewage substances in the water flow are sampled through the sampling head. However, due to the presence of a large amount of sludge, dirt and microorganisms in the sewage, the sampling head is in the sewage for a long time. These foreign objects may adhere to the sampling head, affecting the accuracy of the sampling and may also cause damage to the sampling head. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides an online monitoring and early warning device for sewage biological toxicity to solve the problem mentioned in the background art that the sewage toxicity monitoring device in the prior art may be affected by residual dirt when sampling in sewage and affect the monitoring results.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A sewage biological toxicity online monitoring and early warning device comprises a monitoring box and a water pipe, wherein the water pipe is fixedly connected to the monitoring box, and further comprises a floating traction mechanism and an underwater water intake mechanism, wherein the water pipe passes through the floating traction mechanism, the floating traction mechanism floats on the water surface, and the floating traction mechanism is used to tow the water pipe on the water surface, wherein the floating traction mechanism comprises a floating frame and a rudder plate, the water pipe passes through and is fixedly arranged on the floating frame, the rudder plate is rotatably arranged at the bottom of the floating frame, the underwater water intake mechanism is connected to the water pipe, the underwater water intake mechanism is arranged below the water surface, and the underwater water intake mechanism is used to sample sewage at different depths underwater, wherein the underwater water intake mechanism comprises an air pipe and an impurity separation assembly, the air pipe is connected to the floating frame, two impurity separation assemblies are arranged, and the impurity separation assembly is used to separate impurities in water from sewage for sampling when taking water.

[0007] Preferably, the floating frame is provided with a fixing ring, a deflection opening and a fixed paddle, the fixing ring is fixedly arranged in the floating frame, the water pipe passes through and is fixedly arranged on the fixing ring, the deflection opening is opened on the floating frame, the fixed paddle is fixedly arranged at the bottom of the floating frame, two fixed paddles are provided, and the rudder plate is arranged between the two fixed paddles.

[0008] Furthermore, the floating traction mechanism also includes a steering assembly and an airbag 1. The steering assembly is arranged on the floating frame, and the steering assembly is connected to the water pipe and the rudder plate. The steering assembly is used to drive the rudder plate to rotate through the water pipe. The airbag 1 is fixedly arranged on the floating frame, and the air pipe is communicated with the airbag 1.

[0009] Furthermore, the steering assembly includes gear one, a traction ring and gear two, the gear one is rotatably arranged on the floating frame, the water pipe passes through the traction ring, the traction ring is located at the deflection opening, the water pipe passes through the traction ring and then passes through the fixed ring after passing through the deflection opening, the gear two is rotatably arranged on the floating frame, the gear one is meshed with the gear two, the gear two is arranged on the side of the gear one away from the deflection opening, and the gear two is fixedly connected to the rudder plate.

[0010] As a further solution of the present application, the underwater water intake mechanism also includes a water intake frame, a water intake pipe and a lifting and adjusting component. The water supply pipe and the air supply pipe are both fixedly connected to the water intake frame. The two impurity separation components are respectively fixedly arranged on both sides of the water intake frame. The water intake pipe is fixedly arranged on the water intake frame. The middle part of the water intake pipe is connected to the water supply pipe. The two ends of the water intake pipe are respectively connected to the two impurity separation components. The lifting and adjusting component is fixedly arranged on the upper part of the water intake frame. The lifting and adjusting component is used to adjust the depth of the water intake frame in the water.

[0011] As a further solution of the present application, the lifting and adjusting assembly includes a water inlet trough, a driving cylinder, a filter screen 1, an air bag 2 and a lifting plate. The water inlet trough is opened at the top of the water intake frame, the driving cylinder is fixedly arranged in the water intake frame, the output end of the driving cylinder extends into the water inlet trough, the filter screen 1 is detachably arranged on the water inlet trough, the air bag 2 is fixedly arranged in the water inlet trough, the air bag 2 is connected with the air supply pipe, the lifting plate is arranged in the water inlet trough, the air bag 2 is arranged between the lifting plate and the water inlet trough, and the two sides of the air bag 2 are respectively fixedly connected to the water inlet trough and the lifting plate.

[0012] Among them, it is further explained that the impurity separation component includes a water-passing cylinder, a ring, a blade shaft, a second filter screen and a motor, the water-passing cylinder is fixedly arranged on the water intake frame, the ring is fixedly arranged in the water-passing cylinder, the blade shaft is rotatably arranged in the water-passing cylinder, the blade shaft is rotatably connected to the ring, the second filter screen is fixedly arranged on the water intake frame, the second filter screen is arranged on the side of the water intake frame away from the water intake pipe, the motor is fixedly arranged on the ring, the output end of the motor is fixedly connected to the blade shaft, a separation cylinder is arranged in the water-passing cylinder, the separation cylinder is fixedly arranged on one end of the water-passing cylinder away from the second filter screen, and the water intake pipe is connected with the separation cylinder after passing through the water-passing cylinder.

[0013] Compared with the prior art, the present invention provides an online monitoring and early warning device for sewage biological toxicity, which has the following beneficial effects:

[0014] 1. In the present invention, by providing a floating frame and a rudder plate, the water pipe pulls the traction ring to deflect, the gear 1 rotates, driving the gear 2 to rotate, so that the rudder plate rotates in the opposite direction to the traction ring. At this time, due to the rotation of the rudder plate, the floating frame floats in the direction away from the water pipe. The water pipe is fixed by the fixing ring, and the water pipe bends in the deflection opening. The floating frame drives the water intake frame to float, and the position of the water intake frame in the water can be adjusted by pulling the length of the water pipe on the shore;

[0015] 2. In the present invention, by providing airbag 2 and separation cylinder, when the output end of the driving cylinder is extended, the lifting plate is pushed to move toward the filter screen 1, and the lifting plate pulls airbag 2 to expand, the volume of airbag 2 increases, so that the buoyancy of the water intake frame increases, so that airbag 2 drives the water intake frame to float upward, and the sewage rotates with the blade shaft in the water-passing cylinder, and the dirt and impurities in the sewage adhere to the outer wall of the water-passing cylinder with the rapid rotation of the water. When the impurities in the sewage move to the separation cylinder, the impurities flow between the separation cylinder and the water-passing cylinder, and the sewage with less impurities flows in the separation cylinder, and the impurities and sewage are separated and flow out, and the water delivery pipe absorbs the sewage in the separation cylinder through the water intake pipe for monitoring;

[0016] In the present invention, the water intake position can be adjusted by setting a floating traction mechanism, and the water intake depth can be adjusted by setting an underwater water intake mechanism, and impurities in the sewage can be separated at the same time. Therefore, the sewage biological toxicity online monitoring and early warning device can reduce the impact of impurities on sewage monitoring by adjusting the water sampling position and separating impurities in sewage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the present application;

[0018] Figure 2 This is a schematic diagram of the overall structure from another perspective in a preferred embodiment of the present application;

[0019] Figure 3 This is a schematic cross-sectional structural diagram of a floating frame in a preferred embodiment of the present application;

[0020] Figure 4 A schematic cross-sectional structure diagram of a floating frame from another perspective in a preferred embodiment of the present application;

[0021] Figure 5 This is a structural schematic diagram of an underwater water intake mechanism in a preferred embodiment of the present application;

[0022] Figure 6 This is a partial cross-sectional structural schematic diagram of a water intake frame in a preferred embodiment of the present application;

[0023] Figure 7 This is a schematic cross-sectional structural diagram of a water intake frame from another perspective in a preferred embodiment of the present application.

[0024] In the figure: 1. monitoring box; 2. water pipe; 3. floating frame; 4. rudder plate; 5. air pipe; 6. fixing ring; 7. deflection opening; 8. fixed blade; 9. air bag 1; 10. gear 1; 11. traction ring; 12. gear 2; 13. water intake frame; 14. water intake pipe; 15. water inlet trough; 16. driving cylinder; 17. filter screen 1; 18. air bag 2; 19. lifting plate; 20. water cylinder; 21. collar; 22. blade shaft; 23. filter screen 2; 24. motor; 25. separation cylinder. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figures 1 to 7 , a sewage biological toxicity online monitoring and early warning device, comprising a monitoring box 1 and a water pipe 2, the water pipe 2 is fixedly connected to the monitoring box 1, and also comprises a floating traction mechanism and an underwater water intake mechanism, the water pipe 2 passes through the floating traction mechanism, the floating traction mechanism floats on the water surface, and the floating traction mechanism is used to tow the water pipe 2 on the water surface, wherein the floating traction mechanism comprises a floating frame 3 and a steering plate 4, the water pipe 2 passes through and is fixedly arranged on the floating frame 3, the steering plate 4 is rotatably arranged at the bottom of the floating frame 3, the underwater water intake mechanism is connected to the water pipe 2, the underwater water intake mechanism is arranged below the water surface, and the underwater water intake mechanism is used to sample sewage at different depths underwater, wherein the underwater water intake mechanism comprises an air pipe 5 and an impurity separation The air pipe 5 is connected to the floating frame 3, and two impurity separation components are provided. The impurity separation components are used to separate impurities from sewage in the water for sampling when taking water. The floating traction mechanism pulls the water pipe 2 when floating on the water surface, and the floating frame 3 floats on the water surface to pull the underwater water intake mechanism under the water to a position away from the shore. When using a traditional water intake head, the water intake head is directly thrown into the water, and the water intake head will sink to the bottom of the water near the shore, making it easy to be blocked by sludge. At the same time, only water from the bottom of the water can be taken, which may lead to inaccurate water samples. By adjusting the depth of the underwater water intake mechanism in the water, water at various depths can be obtained, and it is not easy to be affected by impurities and dirt on the bottom or surface of the water to affect the sampling, thereby improving the accuracy of sampling.

[0027] See also Figures 1 to 4A fixing ring 6, a deflection opening 7 and a fixing blade 8 are provided on the floating frame 3. The fixing ring 6 is fixedly arranged in the floating frame 3. The water pipe 2 is fixedly arranged on the fixing ring 6 through the fixing ring 6. The deflection opening 7 is opened on the floating frame 3. The fixing blade 8 is fixedly arranged at the bottom of the floating frame 3. Two fixing blades 8 are provided. The rudder plate 4 is arranged between the two fixing blades 8. The floating traction mechanism also includes a steering assembly and an air bag 9. The steering assembly is arranged on the floating frame 3. The steering assembly is connected to the water pipe 2 and the rudder plate 4. The steering assembly is used to drive the rudder plate 4 to rotate through the water pipe 2. The air bag 9 is fixedly arranged on the floating frame 3. The air pipe 5 is connected to the air bag 9. The floating frame 3 floats on the water surface. Since sewage is mostly discharged into flowing water sources such as rivers, under the flow of water, the fixing blade 8 at the bottom of the floating frame 3 will make the direction of the floating frame 3 parallel to the direction of the water flow.

[0028] See also Figures 1 to 4 The steering assembly includes a gear 10, a traction ring 11 and a gear 2 12. The gear 10 is rotatably arranged on the floating frame 3. The water pipe 2 passes through the traction ring 11. The traction ring 11 is at the deflection opening 7. After the water pipe 2 passes through the traction ring 11, it passes through the deflection opening 7 and then passes through the fixing ring 6. The gear 2 12 is rotatably arranged on the floating frame 3. The gear 10 is meshed with the gear 2 12. The gear 2 12 is arranged on the side of the gear 10 away from the deflection opening 7. The gear 2 12 is fixedly connected to the rudder plate 4. When the floating frame 3 is rotated, the water pipe 2 passes through the traction ring 11 and then passes through the fixing ring 6. When floating in the water, the water pipe 2 pulls the traction ring 11 to deflect, the gear 1 10 rotates, and drives the gear 2 12 to rotate, so that the rudder plate 4 rotates in the opposite direction of the traction ring 11. At this time, due to the rotation of the rudder plate 4, the floating frame 3 floats in the direction away from the water pipe 2. The water pipe 2 is fixed by the fixing ring 6, and the water pipe 2 is bent in the deflection opening 7. The floating frame 3 drives the water intake frame 13 to float. The length of the water pipe 2 can be pulled by a person on the shore to adjust the position of the water intake frame 13 in the water.

[0029] See also Figures 1 to 5 The underwater water intake mechanism also includes a water intake frame 13, a water intake pipe 14 and a lifting and adjusting component. The water pipe 2 and the air pipe 5 are fixedly connected to the water intake frame 13. Two impurity separation components are respectively arranged on both sides of the water intake frame 13. The water intake pipe 14 is fixedly arranged on the water intake frame 13. The middle part of the water intake pipe 14 is connected to the water pipe 2. The two ends of the water intake pipe 14 are respectively connected to the two impurity separation components. The lifting and adjusting component is fixedly arranged on the upper part of the water intake frame 13. The lifting and adjusting component is used to adjust the depth of the water intake frame 13 in the water.

[0030] See also Figures 5 to 7The lifting and adjusting assembly includes a water inlet trough 15, a driving cylinder 16, a filter screen 17, an air bag 2 18 and a lifting plate 19. The water inlet trough 15 is opened at the top of the water intake frame 13. The driving cylinder 16 is fixedly arranged in the water intake frame 13. The output end of the driving cylinder 16 extends into the water inlet trough 15. The filter screen 17 is detachably arranged on the water inlet trough 15. The air bag 2 18 is fixedly arranged in the water inlet trough 15. The air bag 2 18 is connected to the air delivery pipe 5. The lifting plate 19 is arranged in the water inlet trough 15. The air bag 2 18 is arranged between the lifting plate 19 and the water inlet trough 15. The air bag The two sides of airbag 18 are fixedly connected to the water inlet trough 15 and the lifting plate 19 respectively. The water inlet trough 15 is connected with the external water through the filter screen 17. When the output end of the driving cylinder 16 is extended, the lifting plate 19 is pushed to move toward the filter screen 17. The lifting plate 19 pulls the airbag 18 to expand. The gas in the airbag 19 moves into the airbag 18 through the air supply pipe 5. The volume of the airbag 18 increases, which increases the buoyancy of the water intake frame 13, so that the airbag 18 drives the water intake frame 13 to float upward, thereby adjusting the height of the water intake frame 13 in the water.

[0031] See also Figures 5 to 7 The impurity separation component includes a water-passing cylinder 20, a collar 21, a paddle shaft 22, a second filter screen 23 and a motor 24. The water-passing cylinder 20 is fixedly arranged on the water intake frame 13, the collar 21 is fixedly arranged in the water-passing cylinder 20, the paddle shaft 22 is rotatably arranged in the water-passing cylinder 20, the paddle shaft 22 is rotatably connected to the collar 21, the second filter screen 23 is fixedly arranged on the water intake frame 13, the second filter screen 23 is arranged on the side of the water intake frame 13 away from the water intake pipe 14, the motor 24 is fixedly arranged on the collar 21, and the output end of the motor 24 is fixedly connected to the paddle shaft 22. A separation cylinder 25 is arranged in the water-passing cylinder 20, and the separation cylinder 25 is fixedly arranged in the water-passing cylinder 20 away from the second filter screen 23 At one end, the water intake pipe 14 passes through the water passing cylinder 20 and is connected with the separation cylinder 25. The motor 24 drives the blade shaft 22 to rotate, and the water is sucked into the water passing cylinder 20 through the filter screen 23. The sewage rotates with the blade shaft 22 in the water passing cylinder 20, and the dirt and impurities in the sewage adhere to the outer wall of the water passing cylinder 20 with the rapid rotation of the water. When the impurities in the sewage move to the separation cylinder 25, the impurities flow between the separation cylinder 25 and the water passing cylinder 20, and the sewage with less impurities flows in the separation cylinder 25. After the impurities and sewage are separated, they flow out at the end of the water passing cylinder 20 away from the filter screen 23. The water supply pipe 2 absorbs the sewage in the separation cylinder 25 through the water intake pipe 14 for monitoring.

[0032] In summary, when the sewage biological toxicity online monitoring and early warning device is monitoring, the floating frame 3 and the water intake frame 13 are thrown into the water, the water intake frame 13 sinks into the water, and the water pipe 2 is pulled. The water pipe 2 pulls the gear 10 to rotate through the traction ring 11, and the water pipe 2 between the traction ring 11 and the fixed ring 6 is bent at the deflection opening 7. At this time, the rudder plate 4 rotates, so that the floating frame 3 floats in the opposite direction of pulling the water pipe 2, and the floating frame 3 drives the water intake frame 13 to slide in the water. The output end of the driving cylinder 16 pulls the lifting plate 19 to move, so that the volume of the airbag 2 18 changes, so that the buoyancy of the water intake frame 13 sinks and floats in the water with the change, and the depth is adjusted. The motor 24 drives the blade shaft 22 to rotate, and the sewage is sucked into the water cylinder 20. With the rapid rotation of the sewage, the impurities in the sewage leave the water cylinder 20 between the separation cylinder 25 and the water cylinder 20. The water pipe 2 extracts the sewage in the separation cylinder 25 through the water intake pipe 14, and the monitoring box 1 monitors the sewage.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sewage biological toxicity online monitoring and early warning device, comprising a monitoring box (1) and a water pipe (2), wherein the water pipe (2) is fixedly connected to the monitoring box (1), characterized in that: Also includes: a floating traction mechanism, the water pipe (2) passing through the floating traction mechanism, the floating traction mechanism floating on the water surface, and the floating traction mechanism being used to tow the water pipe (2) on the water surface; The floating traction mechanism comprises a floating frame (3) and a rudder plate (4), the water pipe (2) passes through and is fixedly arranged on the floating frame (3), and the rudder plate (4) is rotatably arranged at the bottom of the floating frame (3); An underwater water intake mechanism, the underwater water intake mechanism being connected to the water delivery pipe (2), the underwater water intake mechanism being arranged below the water surface, and the underwater water intake mechanism being used to sample sewage at different depths underwater; The underwater water intake mechanism comprises an air pipe (5), a water intake frame (13) and an impurity separation component, wherein the air pipe (5) is fixedly connected to the floating frame (3), and two impurity separation components are provided, and the impurity separation components are used to separate impurities from sewage in water for sampling when taking water; The floating frame (3) is provided with: A fixing ring (6), the fixing ring (6) being fixedly arranged in the floating frame (3), and the water delivery pipe (2) passing through and fixedly arranged on the fixing ring (6); A deflection opening (7), wherein the deflection opening (7) is provided on the floating frame (3); A fixed blade (8), the fixed blade (8) being fixedly arranged at the bottom of the floating frame (3), two fixed blades (8) being arranged, and the rudder plate (4) being arranged between the two fixed blades (8); The floating traction mechanism also includes: a steering assembly, the steering assembly being arranged on the floating frame (3), the steering assembly being connected to both the water pipe (2) and the rudder plate (4), and the steering assembly being used to drive the rudder plate (4) to rotate via the water pipe (2); The steering assembly comprises: Gear one (10), the gear one (10) being rotatably disposed on the floating frame (3); A traction ring (11), the water pipe (2) passing through the traction ring (11), the traction ring (11) being located at the deflection opening (7), the water pipe (2) passing through the traction ring (11) and then through the deflection opening (7) and then through the fixing ring (6); Gear 2 (12), the gear 2 (12) being rotatably arranged on the floating frame (3), the gear 1 (10) being meshed with the gear 2 (12), the gear 2 (12) being arranged on a side of the gear 1 (10) away from the deflection opening (7), and the gear 2 (12) being fixedly connected to the rudder plate (4); When the floating frame (3) floats in the water, the water pipe (2) pulls the traction ring (11) to deflect, the gear one (10) rotates, driving the gear two (12) to rotate, so that the rudder plate (4) rotates in the direction opposite to the traction ring (11). At this time, due to the rotation of the rudder plate (4), the floating frame (3) floats in the direction away from the water pipe (2). The water pipe (2) is fixed by the fixing ring (6), and the water pipe (2) bends in the deflection opening (7). The floating frame (3) drives the water intake frame (13) to float, and the position of the water intake frame (13) in the water can be adjusted by pulling the length of the water pipe (2) on the shore.

2. The sewage biological toxicity online monitoring and early warning device according to claim 1 is characterized in that: The floating traction mechanism also includes: Airbag one (9), the airbag one (9) is fixedly arranged on the floating frame (3), and the air supply pipe (5) is connected to the airbag one (9).

3. The sewage biological toxicity online monitoring and early warning device according to claim 2 is characterized in that: The water delivery pipe (2) and the air delivery pipe (5) are both fixedly connected to the water intake frame (13), and the two impurity separation components are respectively arranged on both sides of the water intake frame (13); A water intake pipe (14), the water intake pipe (14) being fixedly arranged on the water intake frame (13), the middle portion of the water intake pipe (14) being connected to the water delivery pipe (2), and the two ends of the water intake pipe (14) being respectively connected to the two impurity separation components; A lifting and adjusting component, wherein the lifting and adjusting component is arranged on the upper part of the water intake frame (13), and the lifting and adjusting component is used to adjust the depth of the water intake frame (13) in the water.

4. The sewage biological toxicity online monitoring and early warning device according to claim 3 is characterized in that: The lifting and adjusting component comprises: A water inlet trough (15), wherein the water inlet trough (15) is provided on the top of the water intake frame (13); A driving cylinder (16), the driving cylinder (16) being fixedly disposed in the water intake frame (13), the output end of the driving cylinder (16) extending into the water inlet trough (15); A filter screen 1 (17), the filter screen 1 (17) being detachably arranged on the water inlet tank (15); Airbag 2 (18), the airbag 2 (18) is fixedly arranged in the water inlet groove (15), and the airbag 2 (18) is connected to the air delivery pipe (5); A lifting plate (19), the lifting plate (19) being arranged in the water inlet groove (15), the second airbag (18) being arranged between the lifting plate (19) and the water inlet groove (15), and the two sides of the second airbag (18) being fixedly connected to the water inlet groove (15) and the lifting plate (19) respectively.

5. The sewage biological toxicity online monitoring and early warning device according to claim 4 is characterized in that: The impurity separation component comprises: A water-passing cylinder (20), the water-passing cylinder (20) being fixedly arranged on the water-intake frame (13); A collar (21), the collar (21) being fixedly disposed in the water-passing cylinder (20); a blade shaft (22), the blade shaft (22) being rotatably disposed in the water-passing cylinder (20), the blade shaft (22) being rotatably connected to the sleeve ring (21); A second filter screen (23), the second filter screen (23) being fixedly arranged on the water intake frame (13), the second filter screen (23) being arranged on a side of the water intake frame (13) away from the water intake pipe (14); A motor (24), wherein the motor (24) is fixedly disposed on the collar (21), and an output end of the motor (24) is fixedly connected to the blade shaft (22).

6. The sewage biological toxicity online monitoring and early warning device according to claim 5 is characterized in that: The water-passing cylinder (20) is provided with a separation cylinder (25), the separation cylinder (25) being fixedly arranged at one end of the water-passing cylinder (20) away from the second filter screen (23), and the water intake pipe (14) is connected to the separation cylinder (25) after passing through the water-passing cylinder (20).

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