Sewage treatment device for river water pollution prevention and control

Abstract

The invention discloses a sewage treatment device for river water pollution prevention and control, which comprises a prevention and control cylinder and further comprises an agent feeding assembly, a liquid inlet pipe is fixedly mounted on the circumferential surface of the prevention and control cylinder, and a liquid outlet is formed in the circumferential surface of the prevention and control cylinder; the agent feeding assembly comprises a stirring rod, a chemical box, a chemical hole, a chemical frame, a rubber frame, an elastic telescopic block, a control plate, a feeding hole and a pressure plate, the stirring rod rotationally penetrates through the bottom of the control cylinder, the chemical box is fixedly mounted at the top of the control cylinder, the chemical hole is formed in the bottom of the chemical box, and the chemical frame is slidably mounted on the inner wall of the chemical box; the rubber frame fixedly penetrates through the upper wall and the lower wall of the chemical frame, the higher the rotating speed of the stirring rod is, the higher the putting frequency of a precipitant in the chemical box is, the putting frequency of the precipitant is increased when the sewage amount is large, it can be ensured that the precipitant and sewage are fully mixed and react, and therefore the treatment effect is improved. The device has the characteristic of controlling the feeding rate of the precipitant according to the stirring speed.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to a wastewater treatment device for river water pollution prevention and control. Background Technology

[0002] Rivers are habitats for aquatic life, and water pollution can directly disrupt the ecological balance of aquatic bodies. Many rivers are also drinking water sources for surrounding cities and towns. Even rivers that are not drinking water sources can indirectly affect human water safety through groundwater infiltration and soil pollution.

[0003] Patent publication number CN212356817U relates to a sewage treatment device for river water pollution control. Addressing the problem that existing sewage treatment devices cannot replace and clean filter plates simultaneously with sewage treatment, leading to filter plate clogging and reduced treatment efficiency, the patent proposes the following solution: A purification tank is included. A motor is fixedly installed on one side of the purification tank, and a stirring rod is fixedly connected to the motor's output shaft. The stirring rod is rotatably mounted inside the purification tank. A fixing base is fixedly installed on the top of the purification tank, and a sewage tank is formed on the top of the fixing base. Two filter holes are formed on the bottom inner wall of the sewage tank. A water inlet is formed on the top of the purification tank, communicating with the two filter holes. This patent has a reasonable structure and is easy to operate. This sewage treatment device can replace and clean the filter plates simultaneously with sewage treatment, preventing filter plate clogging and improving sewage treatment efficiency.

[0004] In the aforementioned patents, the device can replace and clean the filter plates while treating wastewater, preventing clogging and improving wastewater treatment efficiency. However, the precipitant is usually added at a constant rate, making it difficult to control the addition rate based on the stirring speed. If the addition rate and stirring speed are mismatched, the reaction equilibrium will be disrupted. If the addition is too slow when stirring is vigorous, the reaction will be incomplete, resulting in pollutant residue. If the addition is too fast when stirring is gentle, unreacted precipitant will be wasted or interfere with the sedimentation process. Furthermore, unadded precipitant is susceptible to pollution from wastewater backflow. Therefore, it is essential to design a wastewater treatment device for river water pollution prevention that is highly practical and can control the addition rate of precipitant based on the stirring speed. Summary of the Invention

[0005] The purpose of this invention is to provide a sewage treatment device for river water pollution prevention and control, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a sewage treatment device for river water pollution prevention and control, comprising a treatment cylinder and a dosing assembly. An inlet pipe is fixedly installed on the circumferential surface of the treatment cylinder, and an outlet is formed on the circumferential surface of the treatment cylinder. The dosing assembly includes a stirring rod, a chemical tank, a chemical hole, a chemical frame, a rubber frame, an elastic telescopic block, a control plate, a dosing hole, and a pressure plate. The stirring rod rotatably penetrates the bottom of the treatment cylinder. The chemical tank is fixedly installed on the top of the treatment cylinder. The chemical hole is formed at the bottom of the chemical tank. The chemical frame is slidably installed on the inner wall of the chemical tank. The rubber frame is fixedly installed through the upper and lower walls of the chemical frame. The elastic telescopic block is fixedly installed at the bottom of the inner wall of the chemical tank, the control plate is rotatably installed at the top of the inner wall of the prevention and control cylinder, the dispensing hole is opened at the top of the prevention and control cylinder, the pressure plate is fixedly installed on the circumferential surface of the stirring rod, the free end of the elastic telescopic block is fixedly connected to the chemical rack, the chemical tank is filled with a precipitant, and a spring is installed between the control plate and the prevention and control cylinder. The rotation of the control plate compresses the spring, and the spring deforms and stores force under the compression of the control plate. After the control plate is separated from the pressure plate, the spring can drive the control plate to reset. The faster the stirring rod rotates, the faster the precipitant is dispensed into the chemical tank.

[0007] According to the above technical solution, the right side of the control panel is set as an inclined surface, and the bottom of the rubber frame is set as an arc surface. Setting the bottom of the rubber frame as an arc surface can reduce the friction when the rubber frame contacts the control panel. The side of the pressure plate away from the stirring rod is set as an arc surface. The precipitant inside the chemical tank enters the prevention and control cylinder through the chemical hole and the dispensing hole and mixes with the sewage.

[0008] According to the above technical solution, the control plate contacts the injection hole, the pressure plate contacts the top of the inner wall of the prevention cylinder, the control plate abuts against the rubber frame, and the rubber frame moves downward to contact the chemical hole and seal the chemical hole.

[0009] According to the above technical solution, it also includes an anti-rush component and a retrieval component. The anti-rush component is used to prevent excessive impact force of sewage from causing foaming at the top of the sewage. The retrieval component is used to retrieve small solid particles in the sewage. The anti-rush component includes an anti-rush frame, a load-bearing frame, an anti-rush plate, a load-bearing spring, and an arc-shaped block. Sewage can only flow down the inner wall of the sewage treatment cylinder through the gap between the anti-rush frame and the anti-rush plate. The anti-rush frame is fixedly installed on the circumferential surface of the stirring rod. The load-bearing frame is fixedly installed on the circumferential surface of the stirring rod. The anti-rush plate is slidably installed on the circumferential surface of the stirring rod. The load-bearing spring is set between the anti-rush plate and the load-bearing frame. The anti-rush plate moves upward to pull the load-bearing spring. The load-bearing spring deforms and stores force due to the pull of the anti-rush plate. The arc-shaped block is fixedly installed at the bottom of the anti-rush plate.

[0010] According to the above technical solution, the anti-impact assembly further includes a support ring and a support rod. The support ring is fixedly installed on the circumferential surface of the anti-impact cylinder, and the support rod is fixedly inserted through the circumferential surface of the support ring and through the inner and outer walls of the anti-impact cylinder. The anti-impact plate moves back and forth to squeeze and crush the solid particles stuck between the anti-impact frame and the anti-impact plate.

[0011] According to the above technical solution, the retrieval assembly includes a fixed base, an elastic telescopic rod, a locking ring, a telescopic support rod, and a hollow float. The hollow float reciprocates to retrieve particles floating on the top of the sewage surface. The fixed base is fixedly installed at the bottom of the load-bearing frame. The elastic telescopic rod is fixedly installed through the upper and lower walls of the fixed base. The locking ring is fixedly installed on the circumferential surface of the stirring rod. The telescopic support rod is fixedly installed on the top of the locking ring. The hollow float is fixedly installed at the free end of the telescopic support rod.

[0012] According to the above technical solution, the salvage assembly further includes a limiting groove and a limiting plate. The limiting groove is formed on the circumferential surface of the free end of the elastic telescopic rod, and the limiting plate is fixedly installed on the top of the fixed base. The limiting plate contacts the bottom of the inner wall of the limiting groove and limits the free end of the elastic telescopic rod.

[0013] According to the above technical solution, the limiting plate is in contact with the limiting groove, the free end of the elastic telescopic rod is in contact with the hollow float, and the elastic telescopic rod is in contact with the anti-impact plate. The contact between the elastic telescopic rod and the anti-impact plate allows the anti-impact plate to drive the free end of the elastic telescopic rod to move downward.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are: (1) In this invention, after the seal of the chemical hole is released, the precipitant inside the chemical tank intermittently enters the prevention and control cylinder through the chemical hole and the injection hole to mix with the sewage. Intermittent injection can avoid the problem of excessive local sewage precipitant concentration caused by a large amount of precipitant rushing in at one time. The more sewage there is, the faster the speed of the stirring rod and the stirring equipment, and the faster the speed of the stirring rod, the faster the frequency of precipitant injection inside the chemical tank. When there is a lot of sewage, the frequency of precipitant injection can be accelerated to ensure that the precipitant and sewage are fully mixed and reacted, thereby improving the treatment effect. The chemical frame moves downward, which drives the rubber frame to move downward. The rubber frame moves downward and contacts the chemical hole and seals the chemical hole. The rubber frame accurately blocks the precipitant injection channel to prevent the uninjected precipitant from being contaminated by sewage back osmosis, thereby ensuring the effectiveness of the precipitant.

[0015] (2) In this invention, due to the shielding effect of the anti-rush frame, sewage can only flow down the inner wall of the treatment cylinder through the gap between the anti-rush frame and the anti-rush plate. The sewage flowing down the inner wall of the treatment cylinder can avoid the water flow directly impacting the water body and forming violent agitation, thereby reducing the bubbles generated by turbulence, ensuring the stable sedimentation reaction and improving the sewage treatment effect.

[0016] (3) The invention uses the back-and-forth movement of the anti-surge plate to squeeze and crush the solid particles stuck between the anti-surge frame and the anti-surge plate. Squeezing and crushing the solid particles can ensure the smooth flow of sewage, and the crushed particles are more likely to react with the precipitant, thereby improving the removal rate of pollutants in sewage.

[0017] (4) The invention uses a hollow float to reciprocate to retrieve particles floating on the top of the sewage surface. This can retrieve floating debris in a timely manner, prevent it from blocking the contact between the precipitant and the sewage, reduce the adsorption or entrainment of precipitant by floating objects during the mixing process, and thus ensure that the precipitant is evenly dispersed in the sewage.

[0018] (5) This invention, by limiting the contact between the limiting plate and the bottom of the inner wall of the limiting tank and limiting the free end of the elastic telescopic rod, prevents the hollow float from floating too far up and squeezing the anti-impact plate, thus preventing deformation. By avoiding the hollow float from squeezing the anti-impact plate due to excessive floating, the integrity of the anti-impact plate structure can be guaranteed, and the stable path of sewage flowing down the inner wall can be maintained, thereby ensuring that all components of the sewage treatment device work together. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with 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 overall structure of the present invention; Figure 2 This is a schematic diagram of the half-section structure of the prevention and control cylinder of the present invention; Figure 3 This is a schematic diagram of a half-section of the chemical chamber structure of the present invention; Figure 4 This is a schematic diagram of the position and structure of the stirring rod and pressure plate of the present invention; Figure 5 This is the present invention. Figure 4 Enlarged schematic diagram of section A in the middle; Figure 6 This is a schematic diagram of the positional structure of the elastic telescopic rod and the hollow float of the present invention; Figure 7 This is the present invention. Figure 6 Enlarged schematic diagram of section B; Figure 8 This is a schematic diagram of the position and structure of the stirring rod and the anti-impact frame of the present invention.

[0020] In the diagram: 1. Prevention cylinder; 2. Inlet pipe; 3. Outlet; 4. Stirring rod; 5. Chemical tank; 6. Chemical port; 7. Chemical rack; 8. Rubber rack; 9. Elastic telescopic block; 10. Control panel; 11. Dispensing hole; 12. Pressure plate; 131. Anti-impact frame; 132. Load-bearing frame; 133. Anti-impact plate; 134. Load-bearing spring; 135. Arc-shaped block; 136. Support ring; 137. Support rod; 141. Fixed seat; 142. Elastic telescopic rod; 143. Locking ring; 144. Telescopic support rod; 145. Hollow float; 146. Limiting groove; 147. Limiting plate. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0022] Please see Figure 1-8 The present invention provides a technical solution: a sewage treatment device for river water pollution prevention and control, comprising a treatment cylinder 1 and a dosing assembly. An inlet pipe 2 is fixedly installed on the circumferential surface of the treatment cylinder 1, and an outlet 3 is opened on the circumferential surface of the treatment cylinder 1. The dosing assembly includes a stirring rod 4, a chemical tank 5, a chemical hole 6, a chemical frame 7, a rubber frame 8, an elastic telescopic block 9, a control plate 10, a dispensing hole 11, and a pressure plate 12. The stirring rod 4 rotates through the bottom of the treatment cylinder 1. The chemical tank 5 is fixedly installed on the top of the treatment cylinder 1. The chemical hole 6 is opened at the bottom of the chemical tank 5. The chemical frame 7 is slidably installed on the inner wall of the chemical tank 5. The rubber frame 8 is fixedly installed through the upper and lower walls of the chemical frame 7. The elastic telescopic block 9 is fixedly installed inside the chemical tank 5. At the bottom of the wall, the control plate 10 is rotatably installed on the top of the inner wall of the treatment cylinder 1. The injection hole 11 is opened on the top of the treatment cylinder 1. The pressure plate 12 is fixedly installed on the circumferential surface of the stirring rod 4. The free end of the elastic telescopic block 9 is fixedly connected to the chemical rack 7. The chemical tank 5 is filled with precipitant. A spring is installed between the control plate 10 and the treatment cylinder 1. The rotation of the control plate 10 compresses the spring. The spring deforms and stores force under the compression of the control plate 10. After the control plate 10 is separated from the pressure plate 12, the spring can drive the control plate 10 to reset. When the sewage volume is large, the frequency of precipitant injection can be increased to ensure that the precipitant and sewage are fully mixed and reacted, thereby improving the treatment effect.

[0023] The right side of the control plate 10 is set as an inclined surface, and the bottom of the rubber frame 8 is set as an arc surface. Setting the bottom of the rubber frame 8 as an arc surface can reduce the friction when the rubber frame 8 contacts the control plate 10. The side of the pressure plate 12 away from the stirring rod 4 is set as an arc surface. The precipitant inside the chemical tank 5 enters the prevention cylinder 1 through the chemical hole 6 and the injection hole 11 and mixes with the sewage. Intermittent injection can avoid the problem of excessively high local sewage precipitant concentration caused by a large amount of precipitant rushing in at one time.

[0024] The control plate 10 contacts the injection hole 11, the pressure plate 12 contacts the top of the inner wall of the prevention cylinder 1, the control plate 10 abuts against the rubber frame 8, the rubber frame 8 moves downward to contact the chemical hole 6 and seals the chemical hole 6, the rubber frame 8 precisely blocks the precipitant injection channel, prevents the uninjected precipitant from being contaminated by sewage back osmosis, and thus ensures the effectiveness of the precipitant.

[0025] During operation, wastewater is diverted into the treatment cylinder 1 through the inlet pipe 2. A stirring device is installed on the circumferential surface of the stirring rod 4. A servo motor is installed at the bottom of the treatment cylinder 1, and its output is fixedly connected to the stirring rod 4. When the servo motor starts, it drives the stirring rod 4 to rotate. This rotation of the stirring rod 4 drives the stirring device to rotate, stirring the wastewater inside the treatment cylinder 1. Simultaneously, the rotation of the stirring rod 4 drives the pressure plate 12 to rotate. The pressure plate 12 rotates and contacts the inclined surface of the control plate 10, squeezing it. The control plate 10 rotates under the pressure of the pressure plate 12, releasing the seal on the chemical hole 6. After the seal on the chemical hole 6 is released, the precipitant inside the chemical tank 5 enters the treatment cylinder 1 through the chemical hole 6 and the inlet hole 11 to mix with the wastewater. As the stirring rod 4 continues to rotate, it drives the pressure plate 12 to continue rotating, disengaging from the control plate 10. After the control plate 10 disengages from the pressure plate 12, it rotates back to its initial state under the elastic force of the spring. The system restores its initial state and contacts the injection hole 11, sealing the chemical tank 5. When treating different amounts of wastewater, the speed of the stirring rod 4 and the stirring equipment can be changed by adjusting the servo motor. The more wastewater there is, the faster the speed of the stirring rod 4 and the stirring equipment. The faster the speed of the stirring rod 4, the faster the frequency of precipitant injection inside the chemical tank 5. When the control plate 10 rotates, it will disengage from the rubber frame 8. After the rubber frame 8 disengages from the control plate 10, the chemical frame 7 moves downward under the elastic force of the elastic telescopic block 9. The downward movement of the chemical frame 7 drives the rubber frame 8 to move downward. The downward movement of the rubber frame 8 contacts the chemical hole 6 and seals the chemical hole 6. When the control plate 10 rotates and returns to its initial state under the elastic force of the spring, it will contact the bottom arc surface of the rubber frame 8 and squeeze the rubber frame 8. The rubber frame 8 moves upward and resets under the squeezing of the control plate 10. The upward movement and reset of the rubber frame 8 drives the free end of the elastic telescopic block 9 to move upward and store force. Example

[0026] Please see Figure 1-8 Based on Embodiment 1, this embodiment further includes an anti-rush component and a retrieval component. The anti-rush component is used to prevent excessive impact force of sewage from causing foaming at the top of the sewage. The retrieval component is used to retrieve small particulate solids in the sewage. The anti-rush component includes an anti-rush frame 131, a load-bearing frame 132, an anti-rush plate 133, a load-bearing spring 134, and an arc-shaped block 135. The anti-rush frame 131 is fixedly installed on the circumferential surface of the stirring rod 4, the load-bearing frame 132 is fixedly installed on the circumferential surface of the stirring rod 4, and the anti-rush plate 133 is slidably installed on the stirring rod 4. On the circumference of the stirring rod 4, a load-bearing spring 134 is set between the anti-impact plate 133 and the load-bearing frame 132. The anti-impact plate 133 moves upward to pull the load-bearing spring 134. The load-bearing spring 134 deforms and stores force under the pull of the anti-impact plate 133. The arc-shaped block 135 is fixedly installed at the bottom of the anti-impact plate 133. The sewage flows down the inner wall of the treatment cylinder 1, which can avoid the water flow directly impacting the water body and forming violent agitation, thereby reducing the bubbles generated by turbulence, ensuring the stability of the sedimentation reaction and improving the sewage treatment effect.

[0027] The anti-surge assembly also includes a support ring 136 and a support rod 137. The support ring 136 is fixedly installed on the circumferential surface of the anti-surge cylinder 1, and the support rod 137 is fixedly inserted through the circumferential surface of the support ring 136 and through the inner and outer walls of the anti-surge cylinder 1. The anti-surge plate 133 moves back and forth to squeeze and crush the solid particles stuck between the anti-surge frame 131 and the anti-surge plate 133. Squeezing and crushing the solid particles can ensure smooth flow of sewage, and the crushed particles are more likely to react with the precipitant, thereby improving the removal rate of pollutants in the sewage.

[0028] The retrieval assembly includes a fixed base 141, an elastic telescopic rod 142, a locking ring 143, a telescopic support rod 144, and a hollow float 145. The fixed base 141 is fixedly installed at the bottom of the load-bearing frame 132. The elastic telescopic rod 142 is fixedly installed through the upper and lower walls of the fixed base 141. The locking ring 143 is fixedly installed on the circumference of the stirring rod 4. The telescopic support rod 144 is fixedly installed on the top of the locking ring 143. The hollow float 145 is fixedly installed at the free end of the telescopic support rod 144. It can retrieve floating debris on the liquid surface in a timely manner, which can prevent it from blocking the contact between the precipitant and the sewage, and reduce the adsorption or entrainment of precipitant by floating objects during the mixing process, thereby ensuring that the precipitant is evenly dispersed in the sewage.

[0029] The retrieval assembly also includes a limiting groove 146 and a limiting plate 147. The limiting groove 146 is formed on the circumferential surface of the free end of the elastic telescopic rod 142. The limiting plate 147 is fixedly installed on the top of the fixed base 141. The limiting plate 147 contacts the bottom of the inner wall of the limiting groove 146 and limits the free end of the elastic telescopic rod 142. By preventing the hollow float 145 from deforming due to excessive upward pressure on the anti-collision plate 133, the structural integrity of the anti-collision plate 133 can be ensured, and a stable path for sewage to flow down the inner wall can be maintained, thereby ensuring that all components of the sewage treatment device work together.

[0030] The limiting plate 147 contacts the limiting groove 146, the free end of the elastic telescopic rod 142 abuts against the hollow float 145, and the elastic telescopic rod 142 abuts against the anti-impact plate 133. The contact between the elastic telescopic rod 142 and the anti-impact plate 133 allows the anti-impact plate 133 to drive the free end of the elastic telescopic rod 142 to move downward.

[0031] During operation, the rotation of the stirring rod 4 causes the anti-surge frame 131 and anti-surge plate 133 to rotate. This rotation forces wastewater entering the treatment cylinder 1 to contact the anti-surge plate 133. Due to the shielding effect of the anti-surge frame 131, the wastewater can only flow down the inner wall of the treatment cylinder 1 through the gap between the anti-surge frame 131 and the anti-surge plate 133. Simultaneously, the rotation of the anti-surge plate 133 causes the arc-shaped block 135 to rotate. This rotation causes the arc-shaped block 135 to contact the support rod 137 and compress it. The arc-shaped block 135 is thus compressed. The reaction force of the support rod 137 moves upward, and the arc block 135 moves upward, causing the anti-impact plate 133 to move upward. As the anti-impact plate 133 continues to rotate, it will cause the arc block 135 to continue to rotate. As the arc block 135 continues to rotate, it will disengage from the support rod 137. After the arc block 135 disengages from the support rod 137, the anti-impact plate 133 moves downward and resets under the elastic force of the load-bearing spring 134. The reciprocating movement of the anti-impact plate 133 squeezes and crushes the solid particles stuck between the anti-impact frame 131 and the anti-impact plate 133.

[0032] When the anti-impact plate 133 moves upward, it disengages from the top of the free end of the elastic telescopic rod 142. After the top of the free end of the elastic telescopic rod 142 disengages from the anti-impact plate 133, the free end of the elastic telescopic rod 142 moves upward under its own elastic force, disengaging from the hollow float 145. After the hollow float 145 disengages from the bottom of the free end of the elastic telescopic rod 142, the free end of the telescopic support rod 144 moves upward, causing the hollow float 145 to move upward. When the anti-impact plate 133 moves downward and resets under the elastic force of the load-bearing spring 134, the anti-impact plate 133 moves downward and contacts the top of the free end of the elastic telescopic rod 142, pressing against the free end of the elastic telescopic rod 142. The free end of the elastic telescopic rod 142 moves downward under the pressure of the anti-impact plate 133 and stores force. The hollow float 145 is pressed against the top of the elastic telescopic rod 142, causing it to move downwards. This downward movement of the hollow float 145 drives the free end of the telescopic support rod 144 to move downwards as well. The free end of the telescopic support rod 144 retracts and stores force. The reciprocating movement of the hollow float 145 helps to collect particles floating on the top of the sewage surface. Simultaneously, if too much sewage enters the control cylinder 1, the hollow float 145 will move upwards under the buoyancy of the sewage. This upward movement of the hollow float 145 drives the free end of the elastic telescopic rod 142 to move upwards. This upward movement of the elastic telescopic rod 142 causes the limiting plate 147 to contact the bottom of the inner wall of the limiting groove 146. The contact between the limiting plate 147 and the bottom of the inner wall of the limiting groove 146 limits the free end of the elastic telescopic rod 142, thereby preventing the hollow float 145 from rising too far and compressing the anti-impact plate 133, causing deformation.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sewage treatment device for river water pollution prevention and control, comprising a treatment cylinder, characterized in that: It also includes a dosing component, an anti-impact component, and a retrieval component. An inlet pipe is fixedly installed on the circumferential surface of the prevention and control cylinder, and an outlet is opened on the circumferential surface of the prevention and control cylinder. The dosing assembly includes a stirring rod, a chemical tank, a chemical hole, a chemical rack, a rubber rack, an elastic telescopic block, a control plate, a dispensing hole, and a pressure plate. The stirring rod rotates through the bottom of the control cylinder. The chemical tank is fixedly installed at the top of the control cylinder. The chemical hole is located at the bottom of the chemical tank. The chemical rack is slidably installed on the inner wall of the chemical tank. The rubber rack is fixedly installed through the upper and lower walls of the chemical rack. The elastic telescopic block is fixedly installed at the bottom of the inner wall of the chemical tank. The control plate rotates and is installed at the top of the inner wall of the control cylinder. The dispensing hole is located at the top of the control cylinder. The pressure plate is fixedly installed on the circumferential surface of the stirring rod. The free end of the elastic telescopic block is fixedly connected to the chemical rack. A precipitant is placed inside the chemical tank. A spring is provided between the control plate and the control cylinder. The anti-rush component is used to prevent excessive impact force of sewage from causing foaming at the top of the sewage, and the retrieval component is used to retrieve small solid particles from the sewage.

2. The sewage treatment device for river water pollution prevention and control according to claim 1, characterized in that: The right side of the control panel is set as an inclined surface, the bottom of the rubber frame is set as an arc surface, and the side of the pressure plate away from the stirring rod is set as an arc surface.

3. A sewage treatment device for river water pollution prevention and control according to claim 2, characterized in that: The control plate is in contact with the injection hole, the pressure plate is in contact with the top of the inner wall of the prevention cylinder, and the control plate is in contact with the rubber frame.

4. A sewage treatment device for river water pollution prevention and control according to claim 3, characterized in that: The anti-impact assembly includes an anti-impact frame, a load-bearing frame, an anti-impact plate, a load-bearing spring, and an arc-shaped block. The anti-impact frame is fixedly installed on the circumferential surface of the stirring rod, the load-bearing frame is fixedly installed on the circumferential surface of the stirring rod, the anti-impact plate is slidably installed on the circumferential surface of the stirring rod, the load-bearing spring is disposed between the anti-impact plate and the load-bearing frame, and the arc-shaped block is fixedly installed at the bottom of the anti-impact plate.

5. A sewage treatment device for river water pollution prevention and control according to claim 4, characterized in that: The anti-impact assembly also includes a support ring and a support rod. The support ring is fixedly installed on the circumferential surface of the anti-impact cylinder, and the support rod is fixedly inserted through the circumferential surface of the support ring and through the inner and outer walls of the anti-impact cylinder.

6. A sewage treatment device for river water pollution prevention and control according to claim 5, characterized in that: The salvage assembly includes a fixed base, an elastic telescopic rod, a locking ring, a telescopic support rod, and a hollow float. The fixed base is fixedly installed at the bottom of the load-bearing frame. The elastic telescopic rod is fixedly installed through the upper and lower walls of the fixed base. The locking ring is fixedly installed on the circumferential surface of the stirring rod. The telescopic support rod is fixedly installed on the top of the locking ring. The hollow float is fixedly installed at the free end of the telescopic support rod.

7. A sewage treatment device for river water pollution prevention and control according to claim 6, characterized in that: The salvage assembly also includes a limiting groove and a limiting plate. The limiting groove is formed on the circumferential surface of the free end of the elastic telescopic rod, and the limiting plate is fixedly installed on the top of the fixed base.

8. A sewage treatment device for river water pollution prevention and control according to claim 7, characterized in that: The limiting plate is in contact with the limiting groove, the free end of the elastic telescopic rod is in contact with the hollow float, and the elastic telescopic rod is in contact with the anti-impact plate.

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