Efficient dosing coagulation device for domestic sewage treatment

By using a bubble dilution and coagulation acceleration mechanism, the problem of easy agglomeration of chemicals is solved, achieving uniform mixing and rapid diffusion of chemicals, improving the stability and efficiency of wastewater treatment, and simplifying the equipment structure.

CN121573789APending Publication Date: 2026-02-27HEZE UNIV
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Patent Information

Application Number
CN202511939274.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-22
Publication Date
2026-02-27

AI Technical Summary

Technical Problem

In traditional domestic sewage treatment equipment, the reagents are prone to clumping and have poor solubility, resulting in uneven mixing and excessively high local concentrations, which affects the stability and efficiency of subsequent reactions.

Method used

It employs a bubble dilution mechanism and a coagulation acceleration mechanism. The aeration disc generates dense bubbles that work synergistically with the stirring blades to break up the mixed agents. The push plate and sliding block accelerate the diffusion of the agents in the coagulation tank, and the slag removal scraper automatically cleans up impurities.

Benefits of technology

It achieves uniform mixing and rapid diffusion of the reagents, improves the stability and efficiency of wastewater treatment, simplifies the equipment structure, and reduces energy consumption and maintenance costs.

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Abstract

The invention provides an efficient dosing coagulation device for domestic sewage treatment, and relates to the technical field of sewage treatment.The efficient dosing coagulation device comprises a medicament dilution tank, a coagulation basin is arranged on the side face of the medicament dilution tank, an aeration disc is arranged in the medicament dilution tank, an air pipeline is arranged in the aeration disc, bubble generation openings are formed in the aeration disc, and the bubble generation openings are communicated with the coagulation basin. A pushing plate is arranged in the coagulating basin, a plurality of holes are formed in the pushing plate, a bubble diluting mechanism is arranged on the medicament diluting tank, and the bubble diluting mechanism can crush and mix a medicament and water through upwelling of bubbles generated by an aeration disc and a bubble generating opening. The crank and the stirring roller are driven by the driving motor to rotate synchronously, the stirring blades on the stirring roller preliminarily stir chemicals and water in the chemical dilution tank, meanwhile, the crank drives the sealing piston to slide in the piston cylinder in a reciprocating mode through the piston rocker, and air pressure generated through sealing fit is used for pressing air into the air conveying pipe.
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Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of sewage treatment, more particularly, relates to a high-efficiency dosing coagulation device for domestic sewage treatment. BACKGROUND

[0002] Sewage treatment is a systematic project of collecting, treating and purifying sewage generated in the fields of life, industry, agriculture and other fields through physical, chemical, biological and other technical means. The core goal is to remove suspended solids, organic matter, heavy metals, pathogens and other pollutants in sewage, so that the treated water quality meets the discharge standard or reuse requirement, which can not only avoid the damage to the ecological environment of rivers, soils, groundwater and other ecological environment caused by direct discharge of sewage, but also can alleviate the pressure of water resource shortage through water resource recycling.

[0003] The current domestic sewage treatment dosing equipment has at least the following problems: First, in the pretreatment link of sewage treatment reagent, the mixing and blending of reagent and water are often completed in a special dilution equipment. This process is mostly used in urban domestic sewage treatment plants, community centralized sewage treatment stations and other scenarios. The treatment object is domestic sewage containing kitchen waste, suspended particles and other components. In actual operation, due to the characteristics of easy caking and poor solubility of part of the sewage treatment reagent, when the traditional dilution equipment only mixes by single stirring method, the reagent is easy to be unevenly dispersed and the local concentration is too high, which affects the stability of the subsequent sewage treatment reaction.

[0004] Second, the coagulation reaction stage of domestic sewage treatment is widely used in various scale domestic sewage treatment facilities. The core is to form flocculation through chemical reaction of reagent and pollutants in sewage to realize the separation and removal of pollutants. In traditional coagulation treatment, the diluted reagent is usually directly injected into the coagulation tank through pipeline, and the mixing is realized by relying on the flow of sewage itself or simple stirring. The fluid flow state in the coagulation tank is uneven, and dead angles are easy to form in some areas, which leads to slow diffusion speed of the reagent and long time required for coagulation reaction, thereby restricting the overall treatment efficiency of the sewage treatment system. SUMMARY

[0005] In order to solve the above technical problems, the present application provides a high-efficiency dosing coagulation device for domestic sewage treatment, which solves the problem that due to the characteristics of easy caking and poor solubility of part of the sewage treatment reagent, when the traditional dilution equipment only mixes by single stirring method, the reagent is easy to be unevenly dispersed and the local concentration is too high, which affects the stability of the subsequent sewage treatment reaction.

[0006] The utility model provides a kind of high-efficiency dosing coagulation device for domestic sewage treatment, including medicament dilution tank, the medicament dilution tank side is equipped with coagulation tank, air pipe is equipped in the medicament dilution tank, air pipe is equipped in the air pipe, and bubble generating port is arranged on the air pipe, push plate is equipped in the coagulation tank, a plurality of holes are opened in the push plate, bubble dilution mechanism is equipped on the medicament dilution tank, bubble dilution mechanism can be broken up and mixed with medicament and water by the bubble upwelling generated by air pipe and bubble generating port, and can be brought to water surface and scraped off by bubble upwelling when producing impurity during mixing, coagulation acceleration mechanism is equipped in the coagulation tank, and coagulation acceleration mechanism can push medicament from one end of coagulation tank to the other end by reciprocating motion of push plate.

[0007] Preferably, the bubble dilution mechanism includes a drive motor, the drive motor is provided with a crank at the lower end, the crank is fixedly installed with a stirring roller penetrating thereon, the upper end of the stirring roller is connected with the fixed output shaft of the drive motor, the drive motor is fixedly installed above the medicament dilution tank, a deslagging scraper is rotatably installed on the stirring roller, the deslagging scraper is provided with a scraper, the installation position of the deslagging scraper is located on the water level line, the deslagging scraper is fixedly installed with the inner wall of the medicament dilution tank, a stirring blade is provided below the deslagging scraper, the air disc is fixedly installed at the bottom of the stirring roller, and the stirring blade is located between the deslagging scraper and the air disc.

[0008] Preferably, the stirring blade is located in the medicament dilution tank, the crank is provided with a piston cylinder at the side, the piston cylinder is slidably installed with a sealing piston, the piston cylinder is provided with a ventilation hole, the sealing piston is in sealing cooperation with the piston cylinder, a piston rocker is provided between the sealing piston and the crank, the piston rocker is rotatably installed with the crank, the sealing piston is rotatably installed with the piston rocker, the lower end of the sealing piston is provided with an interface, the air transmission pipe is fixedly installed on the interface at the lower end of the sealing piston, the other end of the air transmission pipe is installed with a rotary sealing ring, the rotary sealing ring is located in the medicament dilution tank, the rotary sealing ring is rotatably installed on the stirring roller, the stirring roller is provided with an in-shaft sealing pipeline, one end of the in-shaft sealing pipeline is connected with the rotary sealing ring, the other end of the in-shaft sealing pipeline is connected with the air disc, the air disc is provided with a one-way valve, the device fixing frame is provided below the medicament dilution tank, the device fixing frame is fixedly installed with a dosing pump Preferably, the coagulation acceleration mechanism comprises a conveying interface, a metering pump is arranged on the conveying interface, the conveying interface is fixedly installed on the outer wall of the medicament dilution tank, one end of the conveying interface is connected with a medicament outlet, the medicament outlet is installed on the coagulation tank, a push rod is fixedly installed on the sealing piston, one end of the push rod is located in the piston cylinder, a sealing ring is fixedly installed at the position where the push rod contacts the piston cylinder, the other end of the push rod is fixedly installed with a push plate, sliding blocks are fixedly and symmetrically installed on the push plate, the coagulation tank is provided with sliding rails, the sliding rails are fixedly installed in symmetry around the push rod as the shaft, and the sliding blocks are slidingly installed in the sliding rails.

[0009] Compared with the prior art, the present application has the following advantages: In the present application, by means of the bubble dilution mechanism, the driving motor drives the crank and the stirring roller to rotate synchronously, the stirring blades on the stirring roller preliminarily stir the medicament and water in the medicament dilution tank, at the same time, the crank drives the sealing piston to reciprocate in the piston cylinder through the piston rocker, the air pressure generated by the sealing cooperation is used to press the gas into the air transmission pipe, the gas is transported to the aeration disc through the rotating sealing ring and the shaft inner sealing pipeline, dense bubbles are formed through the bubble generating port, the upwelling bubbles and the stirring blades cooperate to break and mix the medicament more thoroughly, avoid clumping, and carry the impurities generated during mixing to float, and the impurities are automatically scraped off by cooperating with the slag scraping plate, which greatly improves the dilution quality and purity of the medicament, and solves the problems of uneven mixing and impurity residue in the traditional dilution process.

[0010] In the present application, by means of the coagulation acceleration mechanism, the reciprocating motion of the sealing piston synchronously drives the push rod and the push plate to reciprocate in the coagulation tank, the holes on the push plate effectively reduce the movement resistance, the symmetrically installed sliding blocks smoothly slide along the sliding rails, ensuring that the push plate moves accurately and stably, the metering pump on the conveying interface accurately controls the delivery amount of the diluted medicament, the medicament enters from one end of the coagulation tank and diffuses to the other end under the push of the push plate, accelerating the full contact between the medicament and the domestic sewage, shortening the coagulation reaction time, and improving the sewage treatment efficiency, the whole process realizes the linkage and cooperation of medicament addition, mixing and coagulation, which is convenient to operate and does not need manual intervention, reducing the labor intensity.

[0011] In the present application, by means of the rotating sealing ring and the shaft inner sealing pipeline, the rotating sealing ring realizes dynamic sealing in the rotating state of the stirring roller, the static ring and the dynamic ring are tightly fitted, the wear is compensated by the medium pressure, which prevents gas leakage and ensures aeration efficiency, blocks the backflow of the medicament solution to block the airway, and the one-way valve in the aeration disc further strengthens the backflow prevention effect, ensuring the stable operation of the pneumatic transmission system, without the need for additional configuration of the fan, only by converting power through the driving motor to provide air source, simplifying the equipment structure, reducing the number of power components, reducing energy consumption and equipment failure rate, and at the same time, reducing the occupied space of the equipment, which is more suitable for the installation and use requirements of small and medium-sized sewage treatment scenes.

[0012] In the present application, by providing the slag removal scraper fixedly installed on the inner wall of the medicament dilution tank at the water level line, the structure is simple and the installation is stable, when the stirring roller drives the liquid in the tank to rotate, the impurity foam wrapped in the bubbles rotates with the liquid, the fixed slag removal scraper can efficiently capture these impurity foams, realize automatic cleaning of impurities, without frequent salvage by manual, reduce the operation steps and maintenance cost, at the same time, avoid the impurities remaining in the medicament to affect the subsequent coagulation reaction effect, ensure the stability and standard rate of sewage treatment, especially suitable for long-term continuous operation of sewage treatment scene, improve the practicality and reliability of the device. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is the overall structure schematic diagram of the present application; Figure 2 is the medicament dilution tank structure schematic diagram of the present application; Figure 3 is the crank structure schematic diagram of the present application; Figure 4 is the piston rocker structure schematic diagram of the present application; Figure 5 is the sealing piston structure schematic diagram of the present application; Figure 6 is the piston cylinder structure schematic diagram of the present application; Figure 7 is the push rod structure schematic diagram of the present application; Figure 8 is the push plate structure schematic diagram of the present application.

[0014] In the figure, the corresponding relationship between the component name and the drawing number is: 1, medicament dilution tank; 2, device fixing frame; 3, dosing pump; 4, coagulation tank; 5, driving motor; 6, stirring roller; 7, crank; 8, piston rocker; 9, sealing piston; 10, piston cylinder; 11, air exchange hole; 12, push rod; 13, push plate; 14, sliding block; 16, sliding rail; 17, conveying interface; 18, slag removal scraper; 19, stirring blade; 20, aeration disc; 21, bubble generating port; 22, air transmission pipe; 23, rotary sealing ring; 24, shaft inner sealing pipeline. DETAILED DESCRIPTION

[0015] The embodiments of the present application will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0016] Please refer to Figures 1-8The application provides a high-efficiency dosing coagulation device for domestic sewage treatment, which comprises a medicament dilution tank 1, the medicament dilution tank 1 is used for dilution of domestic sewage medicament, a coagulation tank 4 is arranged on the side of the medicament dilution tank 1, the coagulation tank 4 is used for storing domestic sewage and providing a place for coagulation of the domestic sewage, an aeration disc 20 is arranged in the medicament dilution tank 1, an air pipeline is arranged in the aeration disc 20, a plurality of bubble generating ports 21 are arranged on the aeration disc 20, the aeration disc 20 and the bubble generating port 21 can convert air into dense bubbles, the bubbles in the medicament dilution tank 1 can make the medicament be broken and mixed more thoroughly, and can make impurities move upwards, a push plate 13 is arranged in the coagulation tank 4, a plurality of holes are formed in the push plate 13, and the push plate 13 is used for pushing the diluted medicament from one end of the coagulation tank 4 to the other end.

[0017] The medicament dilution tank 1 is provided with a bubble dilution mechanism, the bubble dilution mechanism can break and mix the medicament and water by the bubbles generated by the aeration disc 20 and the bubble generating port 21, and can take the impurities generated during mixing to the water surface by the bubbles and scrape off the impurities, the coagulation tank 4 is provided with a coagulation acceleration mechanism, and the coagulation acceleration mechanism can push the medicament from one end of the coagulation tank 4 to the other end by reciprocating movement of the push plate 13.

[0018] As Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6As shown, the bubble dilution mechanism includes a drive motor 5, the lower end of the drive motor 5 is provided with a crank 7, the crank 7 is fixedly installed through the upper end of the stirring roller 6, the upper end of the stirring roller 6 is connected with the fixed output shaft of the drive motor 5, the drive motor 5 is fixedly installed above the medicament dilution tank 1, the stirring roller 6 is rotatably installed with a deslagging scraper 18, the deslagging scraper 18 is provided with a scraper, the installation position of the deslagging scraper 18 is located on the water level line, the deslagging scraper 18 is fixedly installed with the inner wall of the medicament dilution tank 1, the medicament dilution tank 1 is used for scraping impurities on the horizontal surface, the lower side of the deslagging scraper 18 is provided with a stirring blade 19, an aerator 20 is fixedly installed at the bottom of the stirring roller 6, the stirring blade 19 is located between the deslagging scraper 18 and the aerator 20, the stirring blade 19 is located in the medicament dilution tank 1, the stirring blade 19 is used for mixing the medicament and water, the side of the crank 7 is provided with a piston cylinder 10, a sealing piston 9 is slidably installed in the piston cylinder 10, an air exchange hole 11 is formed in the piston cylinder 10, the sealing piston 9 is sealingly matched with the piston cylinder 10, a piston rocker 8 is arranged between the sealing piston 9 and the crank 7, the piston rocker 8 is rotatably installed with the crank 7, the sealing piston 9 is rotatably installed with the piston rocker 8, the lower end of the sealing piston 9 is provided with an interface, an air transmission pipe 22 is fixedly installed on the interface at the lower end of the sealing piston 9, the other end of the air transmission pipe 22 is installed with a rotary sealing ring 23, the rotary sealing ring 23 is located in the medicament dilution tank 1, the rotary sealing ring 23 is rotatably installed on the stirring roller 6, (the working principle of the rotary sealing ring 23 is that a sealing pair is formed by the close fit of the static ring and the dynamic ring, the static ring is fixed on the equipment shell, the dynamic ring rotates synchronously with the hollow stirring shaft, at the same time, the medium pressure is used to compensate the wear of the sealing pair, which not only ensures the dynamic sealing when the stirring shaft rotates, prevents the leakage of the shaft gas, but also prevents the external medicament solution from flowing into the hollow shaft body to block the air hole) an inner shaft sealing pipeline 24 is arranged in the stirring roller 6, one end of the inner shaft sealing pipeline 24 is connected with the rotary sealing ring 23, the other end of the inner shaft sealing pipeline 24 is connected with the aerator 20, a one-way valve is arranged in the aerator 20, the one-way valve in the aerator 20 can prevent the liquid in the medicament dilution tank 1 from flowing back, a device fixing frame 2 is arranged below the medicament dilution tank 1, a medicament adding pump 3 is fixedly installed on the device fixing frame 2, the medicament adding pump 3 is used for injecting sewage treatment medicament into the medicament dilution tank 1, when the medicament dilution tank 1 is filled with water, the device is started, the drive motor 5 drives the crank 7 to rotate through the fixed output shaft, the piston rocker 8 rotatably installed on the crank 7 drives the sealing piston 9 to reciprocate in the piston cylinder 10, due to the sealing cooperation of the sealing piston 9 and the piston cylinder 10, the sealing piston 9 pushes the gas into the air transmission pipe 22 from the interface at the bottom of the piston cylinder 10, under the action of the rotary sealing ring 23, the gas can enter the inner shaft sealing pipeline 24 without being disturbed by the rotation of the stirring roller 6, and then passes through the one-way valve in the aerator 20 and the gas pipeline to be sprayed from each bubble generating port 21, a series of bubbles are formed, the medicament is mixed with the water in the medicament dilution tank 1, and the impurities that may appear in the mixing process are wrapped in the bubbles to the horizontal surface,Since the stirring roller 6 rotates to drive the stirring blade 19 to rotate synchronously, the water in the medicament dilution tank 1 rotates under the driving of the stirring blade 19, and the slag scraping plate 18 is fixed to capture the impurities and foam rotating with the horizontal plane.

[0019] As shown in Figure 1 , Figure 5 , Figure 7 and Figure 8 , the coagulation acceleration mechanism includes a delivery interface 17 provided with a metering pump, the delivery interface 17 is used to deliver the medicament water in the medicament dilution tank 1 after dilution to the coagulation tank 4, the delivery interface 17 is fixedly installed on the outer side wall of the medicament dilution tank 1, one end of the delivery interface 17 is connected to a medicament outlet, the medicament outlet is installed on the coagulation tank 4, a push rod 12 is fixedly installed on the sealing piston 9, one end of the push rod 12 is located in the piston cylinder 10, a sealing ring is fixedly installed at the position where the push rod 12 contacts the piston cylinder 10, the other end of the push rod 12 is fixedly installed with a push plate 13, the push plate 13 is fixedly installed with symmetrically sliding blocks 14, the coagulation tank 4 is provided with sliding rails 16, the sliding rails 16 are fixedly installed symmetrically with the push rod 12 as the axis, the sliding blocks 14 are slidingly installed in the sliding rails 16, when the delivery interface 17 extracts the diluted medicament liquid from the medicament dilution tank 1, the drive motor 5 drives the sealing piston 9 to reciprocate to make the push rod 12 move synchronously, the medicament liquid falls into the coagulation tank 4 from one end of the coagulation tank 4 and reacts with the domestic sewage in the coagulation tank 4, at this time, the push rod 12 moves to drive the push plate 13 to move, which drives the medicament liquid on one side of the coagulation tank 4 to fluctuate to the other end, accelerates the reaction and coagulation of the medicament liquid and the domestic sewage, and the sliding blocks 14 slide on the sliding rails 16 synchronously with the push plate 13 to assist in fixing the push plate 13.

[0020] Working principle: Firstly, the device fixed frame 2 is used to inject a certain amount of sewage treatment medicament into the medicament dilution tank 1 through the medicament pump 3, and at the same time, the medicament dilution tank 1 is filled with clean water to complete the preliminary preparation of medicament dilution, the coagulation tank 4 is used to pre-store the domestic sewage to be treated to provide a basic condition for subsequent coagulation reaction, the connection state of each part is checked, the sealing cooperation between the sealing piston 9 and the piston cylinder 10, the installation sealing performance of the rotary sealing ring 23, and the flexibility of the one-way valve in the aeration disc 20 are confirmed to avoid leakage, abnormal gas transmission or liquid backflow during operation, and to ensure that the device can be started stably.

[0021] Second step, start the drive motor 5 above the medicament dilution tank 1, its output shaft drives the crank 7 to rotate, synchronously rotates with the crank 7 through the fixed stirring roller 6, the stirring blade 19 on the stirring roller 6 rotates, preliminary mixes the medicament and water in the medicament dilution tank 1, simultaneously, the crank 7 drives the sealing piston 9 to reciprocate in the piston cylinder 10 through the piston rocker 8, the piston cylinder 10 realizes gas exchange through the air hole 11, the sealing piston 9 pushes the gas from the lower end interface to the air transmission pipe 22 in the descending process, provides stable gas source for the aeration process.

[0022] Third step, the gas in the air transmission pipe 22 enters the shaft inner sealing pipeline 24 in the stirring roller 6 through the rotating sealing ring 23, the rotating sealing ring 23 guarantees the dynamic sealing when the stirring roller 6 rotates, prevents gas leakage and medicament solution backflow, the gas is delivered to the aeration disc 20 at the bottom of the stirring roller 6 through the shaft inner sealing pipeline 24, forms dense bubbles through the air pipeline and bubble generating port 21 in the aeration disc 20, the bubbles upsurge in the stirring action of the stirring blade 19, the medicament is broken and mixed more thoroughly, the impurities are wrapped to the water surface by the bubbles, the stirring roller 6 rotates to drive the liquid in the tank to rotate, the deslagging scraper 18 fixed on the inner wall of the tank and located at the water level line captures the rotating impurity foam, completes the impurity scraping.

[0023] Fourth step, open the delivery interface 17 of the medicament dilution tank 1 outside wall, the metering pump above the delivery interface 17 delivers the uniformly diluted medicament to one end of the coagulation tank 4 through the medicine outlet, simultaneously, the reciprocating motion of the sealing piston 9 drives the push rod 12 to move synchronously, the push plate 13 at the other end of the push rod 12 reciprocates in the coagulation tank 4, the hole on the push plate 13 reduces the movement resistance, the sliding block 14 symmetrically installed slides along the sliding rail 16 on the coagulation tank 4, guarantees the stable movement of the push plate 13, the push plate 13 pushes the liquid medicine to fluctuate in the coagulation tank 4 from one end to the other end, accelerates the liquid medicine to fully contact and react with the domestic sewage, efficiently completes the coagulation process.

[0024] The embodiments of the present application are given for example and description, and are not exhaustive or limit the present application to the disclosed forms. Many modifications and changes are obvious to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical application of the present application, and enable those skilled in the art to understand the present application to design various embodiments with various modifications suitable for specific purposes.

Claims

1. A high-efficiency dosing coagulation device for domestic sewage treatment, comprising a medicament dilution tank (1), characterized in that: The medicament dilution tank (1) is provided with a coagulation tank (4) on the side, the medicament dilution tank (1) is provided with an aeration disc (20) inside, the aeration disc (20) is provided with an air pipeline inside, the aeration disc (20) is provided with bubble generating ports (21) in an array on the top, the coagulation tank (4) is provided with a push plate (13) inside, and a plurality of holes are formed in the push plate (13). The medicament dilution tank (1) is provided with a bubble dilution mechanism, the bubble dilution mechanism can break and mix the medicament and water by the bubbles generated by the aeration disc (20) and the bubble generating ports (21) and can take the impurities generated during mixing to the water surface by the bubble upwelling and scrape off, the coagulation tank (4) is provided with a coagulation acceleration mechanism, and the coagulation acceleration mechanism can push the medicament from one end of the coagulation tank (4) to the other end by the reciprocating movement of the push plate (13).

2. The high-efficiency dosing coagulation device for treating domestic sewage according to claim 1, characterized in that, The bubble dilution mechanism comprises a driving motor (5), the lower end of the driving motor (5) is provided with a crank (7), the crank (7) is provided with a stirring roller (6) fixedly installed in an array, the upper end of the stirring roller (6) is connected with the fixed output shaft of the driving motor (5), the driving motor (5) is fixedly installed above the medicament dilution tank (1), and the stirring roller (6) is rotatably installed with a slag removal scraper (18).

3. The high-efficiency dosing coagulation device for treating domestic sewage according to claim 2, characterized in that, The slag removal scraper (18) is provided with a scraper, the installation position of the slag removal scraper (18) is located on the water level line, the slag removal scraper (18) is fixedly installed with the inner wall of the medicament dilution tank (1), the lower side of the slag removal scraper (18) is provided with a stirring blade (19), the aeration disc (20) is fixedly installed at the bottom of the stirring roller (6), and the stirring blade (19) is located between the slag removal scraper (18) and the aeration disc (20).

4. The high-efficiency dosing coagulation device for treating domestic sewage according to claim 3, characterized in that, The stirring blade (19) is located in the medicament dilution tank (1), the crank (7) is provided with a piston cylinder (10) on the side, the piston cylinder (10) is slidably installed with a sealing piston (9) inside, the piston cylinder (10) is provided with an air exchange hole (11), and the sealing piston (9) is in sealing cooperation with the piston cylinder (10).

5. The high-efficiency dosing coagulation device for treating domestic sewage according to claim 4, characterized in that, A piston rocker (8) is arranged between the sealing piston (9) and the crank (7), the piston rocker (8) and the crank (7) are rotatably installed, the sealing piston (9) and the piston rocker (8) are rotatably installed, the lower end of the sealing piston (9) is provided with an interface, and the interface of the lower end of the sealing piston (9) is fixedly installed with an air transmission pipe (22).

6. The high-efficiency dosing coagulation device for treating domestic sewage according to claim 5, characterized in that, The other end of the air transmission pipe (22) is installed with a rotary sealing ring (23), the rotary sealing ring (23) is located in the medicament dilution tank (1), the rotary sealing ring (23) is rotatably installed on the stirring roller (6), and the stirring roller (6) is provided with an in-shaft sealing pipeline (24).

7. The high-efficiency dosing coagulation device for treating domestic sewage according to claim 6, characterized in that, One end of the in-shaft sealing pipeline (24) is connected with the rotary sealing ring (23), the other end of the in-shaft sealing pipeline (24) is connected with the aeration disc (20), the aeration disc (20) is provided with a one-way valve, the lower side of the medicament dilution tank (1) is provided with a device fixing frame (2), and the device fixing frame (2) is fixedly installed with a medicament adding pump (3).

8. The high-efficiency dosing coagulation device for treating domestic sewage according to claim 7, characterized in that, The coagulation accelerating mechanism comprises a delivery interface (17) provided with a metering pump, which is fixedly installed on the outer sidewall of the medicament dilution tank (1), one end of the delivery interface (17) is connected with a medicament outlet, and the medicament outlet is installed on the coagulation tank (4).

9. The high-efficiency dosing coagulation device for treating domestic sewage according to claim 8, characterized in that, A push rod (12) is fixedly installed on the sealing piston (9), one end of the push rod (12) is located in the piston cylinder (10), a sealing ring is fixedly installed at the position where the push rod (12) is in contact with the piston cylinder (10), the other end of the push rod (12) is fixedly installed with a push plate (13), and the push plate (13) is fixedly and symmetrically installed with sliding blocks (14).

10. The high-efficiency dosing coagulation device for treating domestic sewage according to claim 9, characterized in that, The coagulation tank (4) is provided with sliding rails (16), the sliding rails (16) are fixedly installed in pairs of symmetry with the push rod (12) as the axis, and the sliding blocks (14) are slidingly installed in the sliding rails (16).