An environmental protection sewage purification and treatment device

Abstract

The present invention discloses a sewage purification and treatment device for environmental protection, including a purification tank. A stirring rod is arranged inside the purification tank, and a baffle plate is also arranged inside the purification tank. A plurality of wavy first stirring blades are fixedly installed on the surface of the stirring rod, and a reciprocating thread is arranged at the top of the stirring rod. A bubble baffle is threadedly installed on the surface of the reciprocating thread, and a plurality of spikes are fixedly installed on the lower surface of the bubble baffle. A liquid storage pipe is fixedly installed above the bubble baffle, and a top pipe penetrating the inside of the liquid storage pipe is arranged on the upper surface of the bubble baffle. A plurality of liquid inlet holes are opened at the top of the top pipe. Through the first stirring blade and the baffle plate, the liquid can be mixed faster and more evenly. The special shape of the wavy blade increases the contact area between the blade and the liquid, enabling more liquid to be effectively stirred and mixed. The up-and-down movement of the bubble baffle drives the spikes to pierce the foam, which can increase the contact area between the gas and the liquid in the sewage and is beneficial to the dissolution of oxygen in the liquid.

Description

Technical Field

[0001] The present invention belongs to the technical field of sewage treatment, and particularly relates to a sewage purification and treatment device for environmental protection. Background Art

[0002] Sewage treatment: The process of purifying sewage to meet the water quality requirements for discharging into a certain water body or for reuse. Sewage treatment is widely applied in various fields such as construction, agriculture, transportation, energy, petrochemical, environmental protection, urban landscape, medical treatment, and catering, and is also increasingly entering the daily lives of ordinary people. Therefore, the demand for sewage treatment equipment by people is increasing.

[0003] In the prior art, a Chinese invention patent with the patent number CN111498925A discloses a sewage purification and treatment device including a purification cylinder. The inner wall of the purification cylinder is fixedly connected with a bottom baffle and an intermediate baffle through connecting columns, and a collecting hopper is fixedly connected to the bottom of the purification cylinder.

[0004] In the above prior art, although by setting the bottom baffle and the intermediate baffle, under the agitation of the stirring plate, the sewage inside the purification cylinder rotates, so that the impurities are concentrated in the center of the purification cylinder, separating the water and impurities inside the purification cylinder, and enabling the water without impurities to enter the branch pipe from the place close to the inner wall of the purification cylinder and be discharged from the inside of the purification cylinder, achieving the purpose of filtering the particulate impurities in the sewage without using a filter screen. By setting the collecting hopper, the impurities in the center of the purification cylinder can be collected, so that the impurities in the sewage are concentrated inside the collecting hopper. After the sewage is purified, the sewage with a large amount of impurities inside the collecting hopper is discharged by opening the control valve, achieving the purpose of facilitating the cleaning of impurities. However, in the sewage treatment process, the sewage is treated through biochemical, aeration and other methods, and a large amount of foamy odor gas will be generated during the sewage treatment process. The odor gas generated during the sewage treatment process is very difficult to collect. The odor gas not only smells bad, but also contains a large number of bacteria, causing serious pollution to the surrounding air and affecting the sewage treatment staff at the same time. Summary of the Invention

[0005] In order to solve the technical problem that a large amount of odor gas will be generated during the sewage treatment process, and the odor gas generated during the sewage treatment process is very difficult to collect. The odor gas not only smells bad, but also contains a large number of bacteria, causing serious pollution to the surrounding air, the present invention provides a sewage purification and treatment device for environmental protection.

[0006] To achieve the above object, the present invention provides the following technical solution: An environmental protection sewage purification and treatment device, including a purification tank, a stirring rod is rotatably installed inside the purification tank, and a baffle plate that cooperates with the stirring rod is arranged inside the purification tank. A plurality of wavy first stirring blades are fixedly installed on the surface of the stirring rod, and a reciprocating thread is arranged at the top of the stirring rod. Limit blocks are fixedly installed at both ends of the reciprocating thread, and a bubble baffle is threadedly installed on the surface of the reciprocating thread.

[0007] Drainage holes are opened inside the bubble baffle, and a plurality of spikes are fixedly installed on the lower surface of the bubble baffle.

[0008] A liquid storage pipe is fixedly installed above the bubble baffle, and a top pipe penetrating inside the liquid storage pipe is arranged on the upper surface of the bubble baffle. A plurality of liquid inlet holes are opened at the top of the top pipe.

[0009] Optionally, an aerator is fixedly installed at the bottom of the purification tank. The stirring rod is hollow, and a plurality of aeration holes are opened on the surface of the stirring rod. The air outlet end of the aerator is communicated with the bottom of the stirring rod.

[0010] Optionally, disinfection barrels are fixedly installed on both sides of the purification tank. A first liquid supplement pipe is communicated with one side of the disinfection barrel, and a liquid inlet pipe is communicated with the top of the disinfection barrel. The liquid inlet pipe is communicated with the liquid storage pipe.

[0011] Optionally, deodorization barrels are fixedly installed on both sides of the purification tank. A second liquid supplement pipe is communicated with one side of the deodorization barrel, and a spray head penetrating inside the purification tank is communicated with the top of the deodorization barrel.

[0012] Optionally, a mounting plate is fixedly installed inside the cavity of the purification tank. Water permeable holes are opened inside the mounting plate. An annular fixing block is fixedly installed on the inner wall of the purification tank. A sliding ring is rotatably installed inside the fixing block. A first filter frame is fixedly installed on the inner wall of the sliding ring. A double-shaft motor is fixed at the bottom of the mounting plate. The liquid storage pipe is fixedly installed on the lower surface of the mounting plate. The upper output end of the double-shaft motor is fixed to the lower surface of the first filter frame, and the lower output end of the double-shaft motor is fixed to the stirring rod.

[0013] Optionally, a first top cover is assembled on the top of the purification tank. A sewage inlet pipe is communicated with the top of the first top cover. A conveying pipe is communicated with one side of the purification tank. The purification tank is communicated with a flocculation tank through the conveying pipe. A sewage discharge pipe is fixedly installed at the bottom of the purification tank.

[0014] Optionally, a second top cover is assembled on the top of the flocculation tank, and a cushion block is fixedly installed inside the cavity of the flocculation tank. A second filter frame is assembled on the upper surface of the cushion block. Filter holes are opened at the bottom of the second filter frame.

[0015] Optionally, a hybrid motor is fixedly installed on the top of the second top cover. The output end of the hybrid motor is equipped with a transmission shaft. A second stirring blade is fixedly installed at the lower part of the transmission shaft. A flocculation barrel is fixedly installed on one side of the flocculation tank. A third liquid supplement pipe is connected to the flocculation barrel, and the top of the flocculation barrel is connected to the flocculation tank.

[0016] Optionally, a scraper is fixedly installed on the top of the transmission shaft. A plurality of through holes are formed on the upper surface of the scraper. A convex column corresponding to the filter hole is slidably installed inside the through hole. The top end of the convex column is semicircularly arranged, and a spring is fixedly installed between the lower surface of the convex column and the scraper.

[0017] Optionally, a drain pipe is connected to one side of the flocculation tank, and a sewage discharge pipe is connected to the bottom of the flocculation tank. One end of the second stirring blade is fixedly installed with a cleaning plate used in cooperation with the flocculation tank.

[0018] In summary, compared with the prior art, an environmental protection sewage purification and treatment device provided by the present invention has the following beneficial effects:

[0019] In the present invention, when the bubble baffle moves upward, it drives the top pipe to move upward, so that the part with the liquid inlet hole is inserted into the liquid storage pipe, so that the disinfectant flows into the top pipe along the liquid inlet hole and then into the purification chamber to disinfect the sewage, so that the disinfectant can be added intermittently, avoiding the possible energy waste during continuous addition;

[0020] 2. In the present invention, through the synergistic effect of the first stirring blade and the baffle plate, the turbulence intensity and shear force of the fluid in the stirring area can be significantly increased. The design of the baffle plate can guide the fluid to flow along a specific path, making the action of the first stirring blade more concentrated and efficient, thus greatly shortening the mixing time and improving the mixing uniformity. The wavy design of the first stirring blade makes the blade have a larger bending angle and thickness. This design can generate a stronger stirring force. Compared with the blade with a planar design, the wavy blade can mix the liquid faster and more evenly. The special shape of the wavy blade increases the contact area between the blade and the liquid, enabling more liquid to be effectively stirred and mixed, thereby improving the overall mixing efficiency;

[0021] 3. In the present invention, a reciprocating screw is provided at the top of the stirring rod. Limit blocks are fixedly installed at both ends of the reciprocating thread, and a foam baffle is threadedly installed on the surface of the reciprocating thread for blocking the foam generated during sewage stirring. A plurality of spikes are fixedly installed on the lower surface of the foam baffle, and the foam baffle is arranged between the limit blocks. When moving and hitting the limit blocks, it moves in the reverse direction, so that the foam baffle moves up and down to drive the spikes to pierce the foam. Piercing the foam during the stirring process can increase the contact area between the gas and liquid in the sewage, facilitate the dissolution of oxygen in the liquid, increase the dissolved oxygen concentration, provide more favorable conditions for the growth of microorganisms and the degradation of pollutants, and the increase in dissolved oxygen can accelerate the biochemical reaction rate in the sewage;

[0022] 4. In the present invention, while the mixing motor rotates to stir the sewage, it drives the scraper to rotate, thereby driving the convex column to rotate. Since the top of the convex column is arranged in a semicircle and the top of the convex column is fixedly connected to the spring, while the scraper rotates, the convex column continuously pops out in the middle of the filter hole, pushing the suspended matter in the filter hole upward to prevent the suspended matter from blocking the filter and affecting the filtering effect;

[0023] 5. In the present invention, a cleaning plate for cooperating with the flocculation tank is fixedly installed at one end of the second stirring blade. When the second stirring blade stirs the sewage, it drives the cleaning plate to rotate to scrape the residues on the inner wall of the flocculation tank, facilitating the subsequent cleaning work. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic three-dimensional structure diagram of the present invention;

[0025] Figure 2 is a schematic internal structure diagram of the purification tank of the present invention;

[0026] Figure 3 is a schematic structure diagram of the purification bin of the present invention;

[0027] Figure 4 is of the present invention Figure 2 the enlarged structure diagram at A in;

[0028] Figure 5 is a schematic internal structure diagram of the flocculation tank of the present invention;

[0029] Figure 6 is a schematic structure diagram of the second filter frame of the present invention;

[0030] Figure 7 is a schematic structure diagram of the scraper of the present invention;

[0031] Figure 8 is a schematic cross-sectional structure diagram of the scraper of the present invention;

[0032] In the figure: 1, purification tank; 2, support leg; 3, first top cover; 4, water inlet pipe; 5, filtration chamber; 6, fixing block; 7, sliding ring; 8, first filter frame; 9, purification chamber; 10, mounting plate; 11, water permeable hole; 12, biaxial motor; 13, reciprocating thread; 14, limiting block; 15, chute; 16, bubble baffle; 17, water draining hole; 18, spike; 19, stirring rod; 20, first stirring blade; 21, baffle plate; 22, aerator; 23, aeration hole; 24, disinfection barrel; 25, first liquid supplementing pipe; 26, liquid inlet pipe; 27, liquid storage pipe; 28, top pipe; 29, liquid inlet hole; 30, deodorization barrel; 31, second liquid supplementing pipe; 32, spray head; 33, conveying pipe; 34, sewage discharge pipe; 35, flocculation tank; 36, second top cover; 37, mixing motor; 38, flocculation barrel; 39, third liquid supplementing pipe; 40, cushion block; 41, second filter frame; 42, filter hole; 43, transmission shaft; 44, scraper; 45, through hole; 46, convex column; 47, spring; 48, second stirring blade; 49, cleaning plate; 50, drain pipe. Detailed implementation manners

[0033] In order to enable those skilled in the art of the present technology to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0034] Refer to Figure 1 , an environmental protection sewage purification and treatment device, including a purification tank 1 and a flocculation tank 35. Support legs 2 are fixedly installed at the bottom of the purification tank 1, and a first top cover 3 is assembled on the top of the purification tank 1. A sewage inlet pipe 4 is communicated with the top of the first top cover 3.

[0035] Refer to Figure 2 and Figure 3 , a mounting plate 10 is fixedly installed in the inner cavity of the purification tank 1. Water permeable holes 11 are opened in the interior of the mounting plate 10. A filtration chamber 5 is formed between the upper surface of the mounting plate 10 and the inner cavity of the purification tank 1. An annular fixing block 6 is fixedly installed on the inner wall of the filtration chamber 5. A sliding ring 7 is rotatably installed inside the fixing block 6. A first filter frame 8 is fixedly installed on the inner wall of the sliding ring 7. A biaxial motor 12 is fixed to the bottom of the mounting plate 10. The upper output end of the biaxial motor 12 penetrates through the mounting plate 10 and makes a rotational fit with the mounting plate 10. The upper output end of the biaxial motor 12 is fixed to the lower surface of the first filter frame 8.

[0036] Further, during use, the sewage is introduced into the first filter frame 8 through the water inlet pipe 4 to filter the sundries in the sewage. The biaxial motor 12 rotates, thereby driving the first filter frame 8 to rotate, and further driving the filtered sundries to rotate, centrifugally separating the sewage on the surface of the sundries to improve the filtering effect. After the work is completed, the first top cover 3 can be disassembled to take out the sundries in the first filter frame 8 for centralized treatment.

[0037] Reference Figure 2 and Figure 3 , the lower surface of the mounting plate 10 and the inner cavity of the purification tank 1 form a purification chamber 9. The lower output end of the double-shaft motor 12 is fixedly installed with a stirring rod 19. The surface of the stirring rod 19 is fixedly installed with a wavy first stirring blade 20. The inner wall of the purification chamber 9 is fixedly installed with a baffle plate 21 that is used in cooperation with the first stirring blade 20.

[0038] Furthermore, during use, the synergistic effect of the first stirring blade 20 and the baffle plate 21 can significantly increase the turbulence intensity and shear force of the fluid in the stirring area. The design of the baffle plate 21 can guide the fluid to flow along a specific path, making the action of the first stirring blade 20 more concentrated and efficient, thereby greatly shortening the mixing time and improving the mixing uniformity. The wavy design of the first stirring blade 20 makes the blade have a larger bending angle and thickness. This design can generate a stronger stirring force. Compared with the blades with a planar design, the wavy blades can mix the liquid faster and more evenly. The special shape of the wavy blades increases the contact area between the blades and the liquid, enabling more liquid to be effectively stirred and mixed, thus improving the overall mixing efficiency.

[0039] Reference Figure 1 and Figure 2 , an aerator 22 is fixedly installed at the bottom of the purification tank 1. The stirring rod 19 is hollow, and a plurality of air holes 23 are formed on the surface of the stirring rod 19. The air outlet end of the aerator 22 penetrates through the purification tank 1 and is communicated with the bottom of the stirring rod 19, and the air outlet end of the aerator 22 is rotationally matched with the stirring rod 19.

[0040] Furthermore, during use, aeration is carried out while stirring the sewage. Aeration increases oxygen, and by introducing air into the sewage, the dissolved oxygen content in the sewage is increased, providing a necessary oxygen environment for microorganisms, promoting the growth and reproduction of microorganisms, agitating the sewage, making the suspended substances, dissolved substances, microorganisms, etc. in the sewage evenly distributed, increasing the contact opportunity between organic matter and microorganisms, accelerating the biochemical reaction rate, and improving the sewage treatment efficiency.

[0041] Reference Figure 2 and Figure 4, a reciprocating thread 13 is provided at the top of the stirring rod 19. Limiting blocks 14 are fixedly installed at both ends of the reciprocating thread 13. A foam blocking plate 16 is threadedly installed on the surface of the reciprocating thread 13, which is used to block the foam generated during sewage stirring. A chute 15 is fixedly installed inside the purification bin 9. The foam blocking plate 16 slides inside the chute 15. Drainage holes 17 are formed inside the foam blocking plate 16, which are used for sewage to fall into the purification bin 9. A plurality of spikes 18 are fixedly installed on the lower surface of the foam blocking plate 16. The foam blocking plate 16 is arranged between the limiting blocks 14. When it moves and touches the limiting block 14, it moves in the reverse direction, so that the foam blocking plate 16 moves up and down to drive the spikes 18 to pierce the foam. Piercing the foam during the stirring process can increase the contact area between the gas and liquid in the sewage, which is beneficial to the dissolution of oxygen in the liquid, improve the dissolved oxygen concentration, and provide more favorable conditions for the growth of microorganisms and the degradation of pollutants. The increase in dissolved oxygen can accelerate the biochemical reaction rate in the sewage, especially the aerobic reaction process, thereby accelerating the removal rate of pollutants and improving the overall efficiency of sewage treatment.

[0042] Reference Figure 2 and Figure 3 , disinfection barrels 24 are fixedly installed on both sides of the purification tank 1. A first liquid supplement pipe 25 is communicated with one side of the disinfection barrel 24. Two symmetrical liquid storage pipes 27 are fixedly installed on the lower surface of the mounting plate 10. A liquid inlet pipe 26 passing through the purification tank 1 is communicated with the top of the disinfection barrel 24. The liquid inlet pipe 26 is communicated with the liquid storage pipe 27. A top pipe 28 passing through the inside of the liquid storage pipe 27 is arranged on the upper surface of the foam blocking plate 16, and the top pipe 28 is in sliding fit with the liquid storage pipe 27. A plurality of liquid inlet holes 29 are formed at the top of the top pipe 28.

[0043] Furthermore, during use, when the foam blocking plate 16 moves upward, it drives the top pipe 28 to move upward, so that the part with the liquid inlet holes 29 is inserted into the liquid storage pipe 27, so that the disinfectant flows into the top pipe 28 along the liquid inlet holes 29 and then flows into the purification bin 9 to disinfect the sewage, so that the intermittent addition of the disinfectant avoids the possible energy waste during continuous addition.

[0044] Reference Figure 2 , deodorization barrels 30 are fixedly installed on both sides of the purification tank 1 and below the disinfection barrels 24. A second liquid supplement pipe 31 is communicated with one side of the deodorization barrel 30. A spray head 32 passing through the inside of the purification bin 9 is communicated with the top of the deodorization barrel 30.

[0045] Further, during use, when the sewage is being treated and stirred, a deodorant is sprayed into the purification chamber 9 through the spray head 32. The chemical components or microorganisms in the deodorant can react with the malodorous gases (such as hydrogen sulfide, ammonia, etc.) in the sewage. Through chemical reactions, adsorption, or biodegradation, etc., the malodorous gases are converted into harmless or less harmful substances, thereby significantly reducing the malodorous smell in the sewage, improving the environmental air quality. The reduction of the malodorous smell can provide a more comfortable working environment and reduce the adverse health effects caused by long-term exposure to malodorous gases.

[0046] Reference Figure 1 , one side of the purification tank 1 is connected with a delivery pipe 33. The delivery pipe 33 is located at the upper part of the purification chamber 9. After the sewage is aerated, the suspended solids in the sewage settle at the bottom of the purification chamber 9. The purification tank 1 is connected with the flocculation tank 35 through the delivery pipe 33. An external delivery pump is connected to the delivery pipe 33 to transport the preliminarily treated sewage to the flocculation tank 35. A sewage discharge pipe 34 connected to the purification chamber 9 is fixedly installed at the bottom of the purification tank 1. An external sewage pump is connected to the sewage discharge pipe 34 to discharge the precipitated suspended solids through the sewage discharge pipe 34.

[0047] Reference Figure 1 and Figure 6 , a second top cover 36 is assembled on the top of the flocculation tank 35, and a cushion block 40 is fixedly installed in the inner cavity of the flocculation tank 35. A second filter frame 41 is assembled on the upper surface of the cushion block 40, and filter holes 42 are opened at the bottom of the second filter frame 41.

[0048] Further, during use, the preliminarily treated sewage is transported into the second filter frame 41. After being filtered again through the filter holes 42, it falls downward, further improving the purification effect. The filtered impurities remain in the second filter frame 41 and can be taken out by opening the second top cover 36.

[0049] Reference Figure 1 and Figure 5 , a mixing motor 37 is fixedly installed on the top of the second top cover 36. The output end of the mixing motor 37 penetrates through the second filter frame 41 and is in rotational cooperation with the second filter frame 41. A detachable transmission shaft 43 is assembled on the output end of the mixing motor 37. A second stirring blade 48 is fixedly installed at the lower part of the transmission shaft 43. A flocculation barrel 38 is fixedly installed on one side of the flocculation tank 35. One end of the flocculation barrel 38 is connected with a third liquid supplement pipe 39, and the top of the flocculation barrel 38 is connected with the flocculation tank 35 for feeding the flocculant into the flocculation tank 35.

[0050] Furthermore, during use, while adding a flocculant to the sewage, stirring is carried out. Stirring enables the flocculant to be fully and evenly dispersed in the sewage, making full contact with suspended solids, colloidal substances, etc. in the sewage. This uniform mixing ensures that the flocculant can fully exert its functions such as adsorption, bridging, and net trapping, thereby improving the flocculation effect. During the stirring process, the flocculant interacts with the particulate matter in the sewage, and through mechanisms such as electrostatic adsorption, charge neutralization, and bridging, the particulate matter aggregates to form larger flocs. These flocs are easy to settle or filter, thus improving the sewage treatment efficiency.

[0051] Reference Figures 5 - 8 , at the top of the transmission shaft 43 and below the second filter frame 41, a scraper 44 is fixedly installed. A plurality of through holes 45 are formed on the upper surface of the scraper 44. A convex column 46 corresponding to the filter hole 42 is slidably installed inside the through hole 45. The top end of the convex column 46 is semicircularly arranged, and a spring 47 is fixedly installed between the lower surface of the convex column 46 and the scraper 44.

[0052] Furthermore, during use, while the mixing motor 37 rotates to stir the sewage, it drives the scraper 44 to rotate, thereby driving the convex column 46 to rotate. Since the top of the convex column 46 is semicircularly arranged and the top of the convex column 46 is fixedly connected to the spring 47, while the scraper 44 rotates, the convex column 46 continuously pops out in the middle of the filter hole 42, pushing the suspended matter in the filter hole 42 upward to prevent the suspended matter from blocking the filter hole 42 and affecting the filtering effect.

[0053] Reference Figures 5 - 8 , one side of the flocculation tank 35 is communicated with a drain pipe 50 for discharging the water purified by flocculation precipitation. And the bottom of the flocculation tank 35 is communicated with a sewage discharge pipe 34. One end of the second stirring blade 48 is fixedly installed with a cleaning plate 49 that cooperates with the flocculation tank 35. When the second stirring blade 48 stirs the sewage, it drives the cleaning plate 49 to rotate to scrape the residues on the inner wall of the flocculation tank 35, facilitating the subsequent cleaning work.

[0054] As used in the specification and claims, certain terms are used to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in names as a way to distinguish components, but use the difference in functions of components as the criterion for distinction. As used throughout the specification and claims, "comprising" is an open-ended term and should be interpreted as "including but not limited to". "Substantially" means within an acceptable error range. Those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0055] It should be noted that the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, such that a commodity or system comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such commodity or system. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the commodity or system comprising said element.

[0056] The above description illustrates and describes several preferred embodiments of the present application. However, as previously mentioned, it should be understood that the present application is not limited to the forms disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the application concept described herein through the above teachings or the techniques or knowledge in the relevant field. And any changes and variations made by those skilled in the art without departing from the spirit and scope of the present application shall fall within the protection scope of the appended claims of the present application.

Claims

1. An environmental protection sewage purification and treatment device, characterized in that It includes a purification tank (1). Inside the purification tank (1), a stirring rod (19) is rotatably installed, and a baffle plate (21) that cooperates with the stirring rod (19) is arranged inside the purification tank (1). A plurality of wavy first stirring blades (20) are fixedly installed on the surface of the stirring rod (19), and a reciprocating thread (13) is arranged at the top of the stirring rod (19). Limit blocks (14) are fixedly installed at both ends of the reciprocating thread (13), and a bubble baffle (16) is threadedly installed on the surface of the reciprocating thread (13). Draining holes (17) are formed inside the bubble baffle (16), and a plurality of spikes (18) are fixedly installed on the lower surface of the bubble baffle (16). A liquid storage pipe (27) is fixedly installed above the bubble baffle (16), and a top pipe (28) passing through the inside of the liquid storage pipe (27) is arranged on the upper surface of the bubble baffle (16). A plurality of liquid inlet holes (29) are formed at the top of the top pipe (28). When the bubble baffle (16) moves upward, it drives the top pipe (28) to move upward, so that the part with the liquid inlet holes (29) is inserted into the liquid storage pipe (27), enabling the disinfectant to flow into the top pipe (28) along the liquid inlet holes (29) and then flow into the purification tank (1) to disinfect the sewage. Disinfection barrels (24) are fixedly installed on both sides of the purification tank (1). A first liquid replenishing pipe (25) is communicated with one side of the disinfection barrel (24), and a liquid inlet pipe (26) is communicated with the top of the disinfection barrel (24). The liquid inlet pipe (26) is communicated with the liquid storage pipe (27).

2. An environmental protection sewage purification and treatment device according to claim 1, characterized in that, An aerator (22) is fixedly installed at the bottom of the purification tank (1). The stirring rod (19) is hollow, and a plurality of air outlet holes (23) are formed on the surface of the stirring rod (19). The air outlet end of the aerator (22) is communicated with the bottom of the stirring rod (19).

3. An environmental protection sewage purification and treatment device according to claim 2, characterized in that, Deodorization barrels (30) are fixedly installed on both sides of the purification tank (1). A second liquid replenishing pipe (31) is communicated with one side of the deodorization barrel (30), and a spray head (32) passing through the inside of the purification tank (1) is communicated with the top of the deodorization barrel (30).

4. An environmental protection sewage purification and treatment device according to claim 1, characterized in that, A mounting plate (10) is fixedly installed in the inner cavity of the purification tank (1). Water permeable holes (11) are formed inside the mounting plate (10). An annular fixing block (6) is fixedly installed on the inner wall of the purification tank (1). A sliding ring (7) is rotatably installed inside the fixing block (6). A first filter frame (8) is fixedly installed on the inner wall of the sliding ring (7). A double-shaft motor (12) is fixed to the bottom of the mounting plate (10). The liquid storage pipe (27) is fixedly installed on the lower surface of the mounting plate (10). The upper output end of the double-shaft motor (12) is fixed to the lower surface of the first filter frame (8), and the lower output end of the double-shaft motor (12) is fixed to the stirring rod (19).

5. An environmental protection sewage purification and treatment device according to claim 4, characterized in that, A first top cover (3) is assembled on the top of the purification tank (1). A sewage inlet pipe (4) is connected to the top of the first top cover (3). A delivery pipe (33) is connected to one side of the purification tank (1), and the purification tank (1) is connected to a flocculation tank (35) through the delivery pipe (33). A sewage discharge pipe (34) is fixedly installed at the bottom of the purification tank (1).

6. An environmental protection sewage purification and treatment device according to claim 5, characterized in that, A second top cover (36) is assembled on the top of the flocculation tank (35). A cushion block (40) is fixedly installed in the inner cavity of the flocculation tank (35). A second filter frame (41) is assembled on the upper surface of the cushion block (40). Filter holes (42) are formed in the bottom of the second filter frame (41).

7. An environmental protection sewage purification and treatment device according to claim 6, characterized in that, A mixing motor (37) is fixedly installed on the top of the second top cover (36). A transmission shaft (43) is assembled at the output end of the mixing motor (37). A second stirring blade (48) is fixedly installed at the lower part of the transmission shaft (43). A flocculation barrel (38) is fixedly installed on one side of the flocculation tank (35). A third liquid supplement pipe (39) is connected to one side of the flocculation barrel (38), and the top of the flocculation barrel (38) is connected to the flocculation tank (35).

8. An environmental protection sewage purification and treatment device according to claim 7, characterized in that, A scraper (44) is fixedly installed at the top of the transmission shaft (43). A plurality of through holes (45) are formed in the upper surface of the scraper (44). A convex column (46) corresponding to the filter hole (42) is slidably installed inside the through hole (45). The top end of the convex column (46) is semicircularly arranged, and a spring (47) is fixedly installed between the lower surface of the convex column (46) and the scraper (44).

9. An environmental protection sewage purification and treatment device according to claim 7, characterized in that, A drain pipe is connected to one side of the flocculation tank (35), and a sewage discharge pipe (34) is connected to the bottom of the flocculation tank (35). A cleaning plate (49) cooperating with the flocculation tank (35) is fixedly installed at one end of the second stirring blade (48).

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