A high-efficiency integrated sewage treatment equipment

Abstract

This invention provides a high-efficiency integrated wastewater treatment device, including a flocculation unit. The flocculation unit includes a drive component, a transmission shaft, a dosing container, and an impeller assembly. The drive component is connected to the transmission shaft; the dosing container communicates with the inner cavity of the transmission shaft; the transmission shaft has several dispensing holes; the impeller assembly includes a lower ring and an upper ring coaxially sleeved on the transmission shaft, with the lower and upper rings spaced apart along the axial direction of the transmission shaft; several blade groups are evenly distributed circumferentially between the lower and upper rings; each blade group includes inner and outer blades spaced radially, with the inner and outer blades located in the same radial plane; both the inner and outer blades are plate-like structures with two arc-shaped edges, the arc-shaped edges of the inner blades protruding towards the transmission shaft, and the arc-shaped edges of the outer blades protruding away from the transmission shaft. This invention provides a high-efficiency integrated wastewater treatment device that effectively improves the flocculation effect of the entire space, creating conditions for efficient sedimentation.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and specifically to a high-efficiency integrated wastewater treatment device. Background Technology

[0002] Integrated wastewater treatment equipment is widely used in the treatment of urban and rural domestic sewage. Among these applications, the flocculation process significantly impacts the formation and growth of flocs and the subsequent sedimentation. Existing frame-type agitator impellers generate fluid rotating around a drive shaft for flocculation, but they have the following drawbacks: 1. Because all blades are vertically arranged on the same plane frame, the collision effect of flocs in the vertical direction is poor, affecting the mixing and flocculation effect. 2. The fluid velocity varies in different radial directions; the flocculation effect near the drive shaft is weaker than that further away, resulting in an uneven flocculation effect across different radial directions. 3. Poor vertical and radial fluid flow within the flocculation tank leads to an uneven flocculation effect throughout the entire space. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a high-efficiency integrated sewage treatment equipment that effectively improves the flocculation effect of the entire space and creates conditions for efficient sedimentation.

[0004] To solve the above-mentioned technical problems, the present invention provides a high-efficiency integrated wastewater treatment device, including a flocculation device installed in a flocculation tank. The flocculation device includes a drive component, a hollow transmission shaft, a dosing container, and an impeller assembly. The drive component is fixed to the top of the flocculation tank and connected to the top of the transmission shaft. The bottom of the transmission shaft is connected to the bottom of the flocculation tank via a bearing. The dosing container and the impeller assembly are both mounted on the transmission shaft, with the dosing container positioned above the impeller assembly. The dosing container communicates with the inner cavity of the transmission shaft. The impeller assembly includes a plurality of discharge holes; the impeller assembly includes a lower ring and an upper ring coaxially sleeved on the drive shaft, the lower ring and the upper ring being spaced apart along the axial direction of the drive shaft; a plurality of blade groups are equally spaced circumferentially between the lower ring and the upper ring; each blade group includes an inner blade and an outer blade spaced apart radially, the inner blade and the outer blade being located in the same radial plane; the inner blade is a plate-like structure with two arc-shaped edges protruding toward the drive shaft, and the outer blade is a plate-like structure with two arc-shaped edges protruding away from the drive shaft.

[0005] As a further improvement of the present invention, the top end of the dosing container is located above the liquid surface and the bottom end is located below the liquid surface; the outer bottom end of the dosing container is provided with several auxiliary blades.

[0006] As a further improvement of the present invention, the lower surface of the upper ring is provided with an upper auxiliary blade, which is located between the inner blade and the outer blade; when the upper auxiliary blade rotates with the drive shaft, it generates a downward rotating fluid between the inner blade and the outer blade centered on the drive shaft.

[0007] As a further improvement of the present invention, the upper surface of the lower ring is provided with a lower auxiliary blade, which is located between the inner blade and the outer blade; when the lower auxiliary blade rotates with the drive shaft, it generates a rotating fluid moving upward around the drive shaft between the inner blade and the outer blade.

[0008] As a further improvement of the present invention, the impeller assembly has an axially symmetrical structure.

[0009] As a further improvement of the present invention, the transmission shaft is provided with an upper blade and a lower blade horizontally in the middle, and the bottom end of the upper blade and the top end of the lower blade are connected; when the upper blade rotates with the transmission shaft, it generates a rotating fluid moving upward around the transmission shaft, and when the lower blade rotates with the transmission shaft, it generates a rotating fluid moving downward around the transmission shaft.

[0010] As a further improvement of the present invention, the axial symmetry plane of the impeller assembly is used as the interface, with the upper blade located above the interface and the lower blade located below the interface.

[0011] As a further improvement of the present invention, the number of blade groups is 2 to 4.

[0012] As a further improvement of the present invention, the uppermost discharge hole on the drive shaft is located below the upper end face of the impeller assembly, and the lowermost discharge hole is located above the lower end face of the impeller assembly.

[0013] As a further improvement of the present invention, the distance between the uppermost discharge hole on the drive shaft and the upper end face of the impeller assembly is 100-300mm, and the distance between the lowermost discharge hole on the drive shaft and the lower end face of the impeller assembly is 100-300mm.

[0014] The present invention provides a high-efficiency integrated sewage treatment device, which uses vertically arranged arc-shaped inner and outer blades. The inner blades generate a double-trumpet-shaped inner annular fluid, and the outer blades generate a waist-drum-shaped outer annular fluid, thereby realizing the continuous collision and growth of flocs in the radial and vertical directions of the entire circumference, continuously accelerating the aggregation of flocs and improving the rapid and efficient sedimentation of impurities. Attached Figure Description

[0015] Figure 1 A schematic diagram of the flocculation device of the high-efficiency integrated sewage treatment equipment provided in the embodiments of the present invention;

[0016] Figure 2 for Figure 1A schematic diagram of the middle impeller assembly.

[0017] The diagram includes: drive component 1, drive shaft 2, drug outlet 21, upper blade 3, lower blade 4, impeller assembly 5, lower ring 51, lower auxiliary blade 511, upper ring 52, upper auxiliary blade 521, outer blade 53, inner blade 54, bearing 6, drug dosing container 7, and auxiliary blade 71. Detailed Implementation

[0018] The technical solution of the present invention will now be described in detail with reference to the accompanying drawings.

[0019] This invention provides a high-efficiency integrated wastewater treatment device, including a flocculation unit installed in a flocculation tank. Figure 1 As shown, the flocculation device includes a drive component 1, a hollow drive shaft 2, a dosing container 7, and an impeller assembly 5. The drive component 1 is fixed to the top of the flocculation tank and is connected to the top of the drive shaft 2. The bottom of the drive shaft 2 is connected to the bottom of the flocculation tank via a bearing 6. The dosing container 7 and the impeller assembly 5 are both mounted on the drive shaft 2, with the dosing container 7 positioned above the impeller assembly 5.

[0020] The dosing container 7 is a thin-walled cylindrical body with an open top, used to hold the coagulant aid. The dosing container 7 is coaxially mounted with the drive shaft 2 and rotates synchronously with it. The drive shaft, located within the dosing container 7, has several inlet holes on its circumference, and the dosing container and the inner cavity of the drive shaft 2 are connected through these inlet holes. The drive shaft, located within the impeller assembly, has several outlet holes 21 on its circumference. In use, the coagulant aid is added to the dosing container 7, enters the inner cavity of the drive shaft 2 through the inlet holes, and then enters the flocculation tank through the outlet holes 21.

[0021] Preferably, the top of the dosing container 7 is above the liquid surface, and the bottom is below the liquid surface. Several auxiliary blades 71 are provided on the outer bottom of the dosing container 7. When the drive shaft rotates, the dosing container 7 rotates synchronously with the drive shaft. The auxiliary blades 71 generate radial fluid below the liquid surface, stirring and mixing the fluid containing flocs and coagulants. This causes the flocs to continuously mix, collide, and agglomerate within the rotation radius of the auxiliary blades, accelerating the floc growth process. Simultaneously, it prevents the fluid from rising, causing the upward-moving fluid to change direction and move outwards, colliding again with the surrounding fluid, further agglomerating and increasing the size of the flocs.

[0022] like Figure 2As shown, the impeller assembly 5 includes a lower ring 51 and an upper ring 52 coaxially sleeved on the drive shaft, with the lower ring 51 and upper ring 52 spaced apart along the axial direction of the drive shaft. The lower ring 51 is located below the lower blade 4, and the upper ring 52 is located between the upper blade 3 and the bottom end of the dosing container. Several blade groups are evenly distributed circumferentially between the lower ring 51 and the upper ring 52, with the number of blade groups being 2 to 4 groups. Each blade group includes an inner blade 54 and an outer blade 53 spaced apart radially, with the inner and outer blades located in the same radial plane. The inner blade 54 is a plate-like structure with two arc-shaped edges protruding towards the drive shaft, and the outer blade 53 is a plate-like structure with two arc-shaped edges protruding away from the drive shaft.

[0023] Preferably, the impeller assembly 5 has an axially symmetrical structure. The axial symmetry plane of the impeller assembly 5 serves as the interface.

[0024] When the inner blade 54 rotates, it generates a double-flare-shaped inner annular fluid rotating around the drive shaft 2, symmetrically positioned above and below the interface. Above the interface, the flare faces upward; below the interface, the flare faces downward. The outer ring of the inner annular fluid is the outer edge of the inner blade, and the inner ring of the inner annular fluid is the inner edge of the inner blade.

[0025] From the interface upwards to the upper surface of the inner annular fluid, the tangential velocity of both the inner and outer rings of the inner annular fluid gradually increases. Within the inner annular fluid: 1. The fluid within and near the inner ring mixes and collides, causing flocs in different motion states to collide and aggregate, accelerating floc growth. The radial aggregation effect of the flocs throughout the circumference gradually increases from bottom to top. 2. The gradually agglomerated and enlarging flocs continuously collide and mix with the coagulant injected outwards from the drive shaft's outlet and the flocs formed by the surrounding water, further increasing floc size. 3. The fluid at the uppermost end mixes and compresses with the radial fluid formed by the auxiliary blades 71, again increasing floc agglomeration and size. 4. Due to the different tangential velocities of the fluid at different heights, and the funnel-shaped, unstable state of the inner annular fluid, the inward diffusion effect of the inner annular fluid varies at different heights, thus enhancing the inward turbulence effect and accelerating the three-dimensional mixing and aggregation of flocs. 5. Due to the differences in fluid tangential velocity in the height direction and coverage in the radial direction, the flow performance in the depth direction is improved, thereby achieving a spatial aggregation effect of flocs within the inner ring. Outer ring of the inner annular fluid: 1. The outer ring of the inner annular fluid mixes and collides with the fluid near the outer ring, causing flocs in different motion states to collide and aggregate, accelerating floc growth. The radial aggregation effect of flocs throughout the circumference gradually increases from bottom to top. 2. Due to the different tangential velocities of the fluid at different heights, and the funnel-shaped shape of the inner annular fluid, which is in an unstable state, the outward diffusion effect of the inner annular fluid is also different, thus strengthening the outward turbulence effect of the inner annular fluid, thereby accelerating the three-dimensional mixing and aggregation of flocs. 3. Due to the differences in fluid tangential velocity and coverage in the height direction, the flow performance in the depth direction is improved, thereby achieving a spatial aggregation effect of flocs outside the outer ring.

[0026] From the interface downwards to the lower end of the inner annular fluid, the tangential velocity of both the inner and outer rings of the inner annular fluid gradually increases. Within the inner annular fluid: 1. The inner ring mixes and collides with the fluid near it, causing flocs in different motion states to collide and aggregate, accelerating floc growth. The radial aggregation effect of the flocs along the entire circumference gradually increases from top to bottom. 2. The gradually agglomerated and growing flocs continuously collide and mix with the flocs formed by the coagulant injected outwards from the discharge port 21 of the drive shaft and the surrounding water, further increasing floc size. 3. The fluid at the bottom mixes and compresses with the fluid at the bottom of the pool, again increasing floc aggregation. 4. Due to the different tangential velocities of the fluid at different heights and the funnel-shaped, unstable state of the inner annular fluid, its inward diffusion effect also varies, thus enhancing the inward turbulence effect and accelerating the three-dimensional mixing and aggregation of flocs. 5. Due to the differences in fluid tangential velocity in the height direction and radial coverage, the flow performance in the depth direction is improved, achieving a spatial aggregation effect of flocs within the inner ring. Outer ring of the inner annular fluid: 1. The outer ring of the inner annular fluid mixes and collides with the fluid near the outer ring, causing flocs in different motion states to collide and aggregate, accelerating floc growth. The radial aggregation effect of flocs throughout the circumference gradually increases from top to bottom. 2. The fluid at the bottom mixes and compresses with the fluid at the bottom of the pool, further increasing floc aggregation. 3. Due to the different tangential velocities of the fluid at different heights, and the funnel-shaped shape of the inner annular fluid, which is in an unstable state, the outward diffusion effect of the inner annular fluid is also different, thus strengthening the outward turbulence effect of the inner annular fluid, thereby accelerating the three-dimensional mixing and aggregation of flocs. 4. Due to the differences in fluid tangential velocity and coverage in the height direction, the flow performance in the depth direction is improved, achieving a spatial aggregation effect of flocs outside the outer ring.

[0027] When the outer blade 53 rotates, it generates an outer annular fluid in the shape of a waist drum that rotates around the drive shaft 2, and is symmetrical about the interface. The outer ring of the outer annular fluid is the outer edge of the outer blade, and the inner ring of the outer annular fluid is the inner edge of the outer blade.

[0028] From the interface upwards to the upper surface of the outer annular fluid, the tangential velocity of both the inner and outer rings of the outer annular fluid gradually decreases. In the inner ring of the outer annular fluid: 1. The inner ring of the outer annular fluid mixes and collides with the outer ring of the inner annular fluid formed by the inner blades, as well as with the fluid near the outer ring of the inner annular fluid. This causes the two flocs in different motion states to collide and aggregate, accelerating floc growth. Because the tangential velocity of the inner annular fluid gradually increases from bottom to top, the outward diffusion of the outer ring of the inner annular fluid gradually increases, while the tangential velocity of the outer annular fluid gradually decreases. The inward diffusion of the inner ring of the outer annular fluid gradually decreases, and the distance between the inner and outer annular fluids gradually decreases. This balances the radial aggregation effect of the flocs between the inner and outer blades in the height direction, resulting in a more even distribution of flocs in the height direction. 2. The fluid at the upper surface mixes and compresses with the fluid near the liquid surface, further increasing floc aggregation. 3. Due to the different tangential velocities of the fluid at different heights, and the drum-shaped, unstable outer ring fluid, the inward diffusion effect of the outer ring fluid also varies, thus enhancing the inward turbulence effect and accelerating the three-dimensional mixing and aggregation of flocs. 4. The different tangential velocities in the height direction and the different radial coverage areas improve the flow performance in the depth direction, achieving spatial aggregation of flocs within the inner ring. Outer Ring of the Outer Ring Fluid: 1. The outer ring of the outer ring fluid mixes and collides with the fluid near it, causing flocs in different motion states to collide and aggregate, accelerating floc growth. The radial aggregation effect of flocs throughout the circumference gradually increases from top to bottom. 2. Due to the different tangential velocities of the fluid at different heights, and the drum-shaped, unstable outer ring fluid, the outward diffusion effect of the outer ring fluid also varies, thus enhancing the outward turbulence effect and accelerating the three-dimensional mixing and aggregation of flocs. 3. Due to the difference in fluid tangential velocity and coverage in the height direction, the flow performance in the depth direction is improved, thereby achieving the spatial aggregation effect of flocs. 4. As the distance between the outer blade and the pool wall gradually increases from bottom to top, while the fluid tangential velocity gradually decreases, the collision and mixing effects of the flocs differ from bottom to top, causing the fluid to deflect inwards. During movement, it continuously mixes with the fluid above, accelerating the floc aggregation process. 5. After the mixed fluid moves upwards to near the liquid surface, it moves towards the drive shaft, colliding and mixing with the fluid near the liquid surface, further agglomerating the flocs. 6. During the movement, it mixes and collides with the radial fluid moving outwards generated by the auxiliary blade 71. Because the two fluid flows in opposite directions, the mutual collision and aggregation of the flocs are strengthened. 7. Under the action of the upper auxiliary blade 521, the interacting fluid changes direction and moves downwards between the inner and outer blades. Then, under the combined action of the inner and outer blades, the movement and aggregation process of the flocs is repeated, accelerating the sedimentation of impurities.

[0029] From the interface downwards to the lower end of the outer annular fluid, the tangential velocity of both the inner and outer rings of the outer annular fluid gradually decreases. The inner ring of the outer annular fluid: 1. The inner ring of the outer annular fluid mixes and collides with the outer ring of the inner annular fluid formed by the inner blades, and with the fluid near the outer ring of the inner annular fluid, causing the two flocs in different motion states to collide and aggregate, accelerating floc growth. Because the tangential velocity of the inner annular fluid gradually increases from bottom to top, the outward diffusion of the outer ring of the inner annular fluid gradually increases, while the tangential velocity of the outer annular fluid gradually decreases. The inward diffusion of the inner ring of the outer annular fluid gradually decreases, and the distance between the inner and outer annular fluids gradually decreases, thus balancing the radial aggregation effect of the flocs between the inner and outer blades in the height direction, resulting in a more even distribution of flocs in the height direction. 2. Due to the different tangential velocities of the fluid at different heights, and the drum-shaped outer annular fluid, the inward diffusion effect of the outer annular fluid also varies, thus strengthening the inward turbulence effect of the annular fluid, thereby accelerating the three-dimensional mixing and aggregation of flocs. 3. Due to the differences in fluid tangential velocity in the height direction and radial coverage, spatial aggregation of flocs within the inner circle is achieved. 4. The fluid at the lower end mixes and compresses with the fluid at the bottom of the pool, further increasing floc aggregation. Outer ring of the outer ring fluid: 1. The outer ring of the outer ring fluid mixes and collides with the fluid near the outer ring, causing flocs in different motion states to collide and aggregate, accelerating floc growth. The radial aggregation effect of flocs throughout the circumference gradually increases from bottom to top. 2. Due to the different tangential velocities of the fluid at different heights, and the drum-shaped outer ring fluid being in an unstable state, the outward diffusion effect of the outer ring fluid is also different, thus strengthening the outward turbulence effect of the outer ring fluid, thereby accelerating the three-dimensional mixing and aggregation of flocs. 3. Due to the differences in fluid tangential velocity and coverage in the height direction, the flow performance in the depth direction is improved, achieving spatial aggregation of flocs. 4. As the distance between the outer blade and the pool wall gradually increases from top to bottom, and the tangential velocity of the fluid gradually decreases, the collision and mixing effects of the flocs differ from top to bottom, causing the fluid to deflect inward. During its movement, it continuously mixes with the fluid below, accelerating the floc aggregation process. 5. The mixed fluid moves downward to the bottom of the pool and moves towards the drive shaft, colliding and mixing with the fluid at the bottom of the pool, further agglomerating the flocs. 6. During its movement, it mixes and collides with the downward-moving fluid generated by the lower blade 4. Since the two fluid flows are perpendicular, the mutual collision and aggregation of the flocs are enhanced. 7. Under the action of the lower auxiliary blade 511, the interacting fluid changes direction and moves upward between the inner and outer blades. Then, under the combined action of the inner and outer blades, the movement and aggregation process of the flocs is repeated, accelerating the sedimentation of impurities.

[0030] In the above embodiments, by vertically setting arc-shaped inner and outer blades, the inner blades generate a double-trumpet-shaped inner annular fluid, and the outer blades generate a waist-drum-shaped outer annular fluid, thereby realizing the continuous collision and growth of flocs in the radial and vertical directions of the entire circumference, continuously accelerating the aggregation of flocs, and improving the rapid and efficient sedimentation of impurities.

[0031] Preferably, the lower surface of the upper ring 52 is provided with an upper auxiliary blade 521, located between the inner blade 54 and the outer blade 53. The upper auxiliary blade 521 is inclined downward, and when the drive shaft rotates, the upper auxiliary blade 521 generates a rotating fluid moving downward around the drive shaft between the inner blade 54 and the outer blade 53. The upper surface of the lower ring 51 is provided with a lower auxiliary blade 511, located between the inner blade 54 and the outer blade 53. The lower auxiliary blade 511 is inclined upward, and when the drive shaft rotates, the lower auxiliary blade 511 generates a rotating fluid moving upward around the drive shaft between the inner blade 54 and the outer blade 53.

[0032] The fluid above the impeller assembly changes direction and moves downward between the inner and outer blades under the action of the upper auxiliary blade 521. The fluid below the impeller assembly changes direction and moves upward between the inner and outer blades under the action of the lower auxiliary blade 511. On the one hand, the downward-moving fluid and the upward-moving fluid collide and mix with each other near the interface, causing the flocs to continuously increase in size. On the other hand, after the fluids above and below the interface remix, a new mixed fluid is formed, causing the fluids above and below the interface to continuously change position. Under the combined action of the inner and outer blades, the movement and aggregation process of the flocs is repeated, accelerating the sedimentation effect.

[0033] In a preferred embodiment, the drive shaft 2 has an upper blade 3 and a lower blade 4 horizontally positioned at its center. The bottom end of the upper blade 3 and the top end of the lower blade 4 are connected, and the upper blade 3 and the lower blade 4 are located between the inner blade and the drive shaft. Preferably, the upper blade 3 is located above the interface, and the lower blade 4 is located below the interface.

[0034] The upper blade 3 is inclined upwards. When the drive shaft rotates, the upper blade 3 generates a rotating fluid moving upwards around the drive shaft. During this upward movement, the fluid continuously mixes with the coagulant aid injected outwards from the discharge port 21 of the drive shaft, ensuring the coagulant aid is fully dissolved in the fluid and causing the flocs in the fluid to continuously increase in size near the drive shaft. As the growing flocs move upwards with the fluid, they continuously mix and collide again with the coagulant aid injected from the upper discharge port, thus increasing the flocs' size in the height direction. Most of the fluid generated by the upper blade mixes with the coagulant aid and moves upwards, while a small portion flows tangentially outwards around the drive shaft, generating an inner annular fluid under the action of the inner blades of the impeller assembly, carrying out flocculation processes in different directions and increasing the collision and aggregation of flocs in different directions. The lower blade 4 is inclined downwards. When the drive shaft rotates, the lower blade 4 generates a rotating fluid moving downwards around the drive shaft. As the fluid moves downwards, it continuously mixes with the coagulant aid sprayed outwards from the outlet 21 of the drive shaft, ensuring the coagulant aid is fully dissolved in the water. This causes the flocs in the water to continuously increase in size near the drive shaft. The continuously growing flocs, as the fluid moves downwards, continuously mix and collide with the coagulant aid sprayed from the lower outlet, causing the flocs to grow further in height. Most of the fluid and agent generated by the lower blades mixes and moves downwards, while a small portion flows tangentially outwards around the drive shaft. Under the action of the inner blades of the impeller assembly, an inner annular fluid is generated, carrying out flocculation processes in different directions and increasing the collision and aggregation of flocs in different directions.

[0035] In the above embodiments, by setting upper and lower blades, the flocs continuously collide and grow along the drive shaft in the height direction, causing the flocs to continuously increase in size and creating favorable conditions for the continuous aggregation of subsequent flocs.

[0036] Preferably, the uppermost discharge port on the drive shaft is located below the upper end face of the impeller assembly, and the lowermost discharge port is located above the lower end face of the impeller assembly. Preferably, the distance between the uppermost discharge port on the drive shaft and the upper end face of the impeller assembly is 100–300 mm, and the distance between the lowermost discharge port on the drive shaft and the lower end face of the impeller assembly is 100–300 mm. This allows the continuously growing flocs to continuously agglomerate radially under the action of the impeller assembly.

[0037] The working process of the high-efficiency integrated wastewater treatment equipment in the above preferred embodiment is as follows:

[0038] The coagulant is added to the dosing container 7. The coagulant enters the inner cavity of the drive shaft 2 through the inlet hole and then enters the flocculation tank through the outlet hole 21.

[0039] The driving component 1 drives the transmission shaft 2 to rotate, which in turn drives the upper blade 3, lower blade 4, inner blade 54, outer blade 53, auxiliary blade 71, upper auxiliary blade 521, and lower auxiliary blade 511 to rotate.

[0040] At the top of the interface:

[0041] The upper blade 3 rotates to generate an upward-moving rotating fluid centered on the drive shaft. During this upward movement, the fluid continuously mixes with the coagulant aid injected outwards from the discharge port 21 on the drive shaft, ensuring the coagulant aid is fully dissolved in the fluid and causing the flocs in the fluid to continuously increase in size near the drive shaft. As the growing flocs continue to move upwards with the fluid, they are repeatedly mixed and collided with the coagulant aid injected from the upper discharge port, causing the flocs to grow continuously in the height direction. Most of the fluid generated by the upper blade mixes with the coagulant aid and moves upwards, while a small portion flows tangentially outwards around the drive shaft, forming an inner annular fluid under the action of the inner blade 54, undergoing flocculation processes in different directions and increasing the collision and aggregation of flocs in different directions.

[0042] The inner blade 54 rotates to generate an upward-opening, funnel-shaped inner annular fluid that rotates around the drive shaft 2. The inner ring of this fluid mixes and collides with the fluid near it, causing flocs in different motion states to collide and agglomerate, accelerating floc growth. The radial agglomeration effect of the flocs gradually increases from bottom to top along the entire circumference. The gradually agglomerated and enlarging flocs continuously collide and mix with the flocs formed by the coagulant injected outwards from the drive shaft's outlet and the surrounding water under the action of the upper blades, further increasing floc size. The fluid at the top mixes and compresses with the radial fluid formed by the auxiliary blades 71, again causing floc agglomeration and enlargement. The outer ring of the inner annular fluid mixes and collides with the fluid near it, causing flocs in different motion states to collide and agglomerate, accelerating floc growth. The radial agglomeration effect of the flocs gradually increases from bottom to top along the entire circumference.

[0043] The outer blade 53 rotates to generate a semi-circular outer annular fluid that rotates around the drive shaft 2. The inner ring of the outer annular fluid mixes and collides with the outer ring of the inner annular fluid formed by the inner blade, as well as with the fluid near the outer ring of the inner annular fluid. This causes the flocs in two different motion states to collide and agglomerate, accelerating floc growth. The fluid at the upper end mixes and compresses with the fluid near the liquid surface, further increasing floc agglomeration. The outer ring of the outer annular fluid mixes and collides with the fluid near the outer ring, causing the flocs in different motion states to collide and agglomerate, accelerating floc growth. As the distance between the outer blade and the pool wall gradually increases from bottom to top, while the tangential velocity of the fluid gradually decreases, the collision and mixing effect of the flocs from bottom to top is different. This causes the upward-moving fluid to deflect inward, continuously mixing with the fluid above during its movement, accelerating the floc agglomeration process. After the mixed fluid moves upward to the vicinity of the liquid surface, it moves towards the drive shaft, colliding and mixing with the fluid near the liquid surface, further agglomerating the flocs.

[0044] The auxiliary blades 71 rotate to generate radial fluid, which stirs and mixes the liquid containing flocs and coagulants below the liquid surface. This causes the flocs to continuously mix, collide, and agglomerate between the inner blades and the drive shaft, accelerating the floc growth process. At the same time, it prevents other fluids from floating to the surface, causing them to change direction and move in all directions, colliding with the surrounding fluids again, thus causing the flocs to continuously agglomerate and increase in size.

[0045] The upward-flowing fluid generated by the upper blade 3 reaches its uppermost point and moves outwards under the action of the auxiliary blade 71. The outer annular fluid generated by the outer blade moves towards the drive shaft after reaching the vicinity of the liquid surface and collides with the radial fluid generated by the auxiliary blade 71.

[0046] Below the split screen:

[0047] The rotation of the lower blade 4 generates a downward-moving rotating fluid centered on the drive shaft. During this downward movement, the fluid continuously mixes with the coagulant aid injected outwards from the discharge port 21 on the drive shaft, ensuring the coagulant aid is fully dissolved in the fluid. This causes the flocs in the fluid to continuously increase in size between the inner blade and the drive shaft. As the flocs continue to grow downwards, they are further mixed and collided with the coagulant aid injected from the lower discharge port, causing the flocs to grow continuously in the height direction. Most of the fluid generated by the lower blade mixes with the coagulant aid and moves downwards, while a small portion flows tangentially outwards around the drive shaft, creating an inner annular fluid under the action of the inner blade, thus initiating flocculation processes in different directions and increasing the collision and aggregation of flocs in different directions.

[0048] The inner blades rotate, generating a downward-facing, funnel-shaped inner annular fluid that rotates around the drive shaft 2. The inner ring of this fluid mixes and collides with the fluid near it, causing flocs in different motion states to collide and agglomerate, accelerating floc growth. The radial agglomeration effect of the flocs gradually increases from top to bottom throughout the entire circumference. The gradually agglomerated and growing flocs continuously collide and mix with the flocs formed by the coagulant injected outwards from the drive shaft's outlet 21 and the surrounding water, further increasing floc size. The fluid at the bottom mixes and compresses with the fluid at the bottom of the pool, again causing floc agglomeration and growth. The outer ring of the inner annular fluid mixes and collides with the fluid near it, causing flocs in different motion states to collide and agglomerate, accelerating floc growth. The radial agglomeration effect of the flocs gradually increases from top to bottom throughout the entire circumference. The fluid at the bottom mixes and compresses with the fluid at the bottom of the pool, again causing floc agglomeration and growth.

[0049] The rotation of the outer blades generates a semi-circular, drum-shaped outer annular fluid that rotates around the drive shaft 2. The inner ring of the outer annular fluid mixes and collides with the outer ring of the inner annular fluid formed by the inner blades, as well as with the fluid near the outer ring of the inner annular fluid. This mixing and collision causes the flocs in different motion states to collide and agglomerate, accelerating floc growth. The fluid at the lower end mixes and compresses with the fluid at the bottom of the pool, further increasing floc agglomeration. The outer ring of the outer annular fluid mixes and collides with the fluid near its outer ring, causing the flocs in different motion states to collide and agglomerate, accelerating floc growth. Because the distance between the outer blades and the pool wall gradually increases from top to bottom, and the tangential velocity of the fluid gradually decreases, the collision and mixing effect of the flocs from bottom to top is different. This causes the downward-moving fluid to deflect inwards, continuously mixing with the fluid below, accelerating the floc agglomeration process. The mixed fluid moves downwards to the bottom of the pool and moves towards the drive shaft, colliding and mixing with the fluid at the bottom of the pool, further agglomerating the flocs.

[0050] The downward-flowing fluid generated by the lower blade 4 reaches the bottom and moves outwards under the influence of the pool bottom. The outer annular fluid generated by the outer blade moves towards the drive shaft after reaching the pool bottom, and the fluids at the pool bottom collide with each other.

[0051] The fluid above the impeller assembly changes direction and moves downward between the inner and outer blades under the action of the upper auxiliary blade 521. The fluid below the impeller assembly changes direction and moves upward between the inner and outer blades under the action of the lower auxiliary blade 511. The downward-moving fluid and the upward-moving fluid collide and mix near the interface, causing the flocs to continuously increase in size. The fluids above and below the interface undergo three-dimensional mixing simultaneously in the axial and radial directions (the fluids formed by the inner, upper, and lower blades), achieving spatial flocculation. After remixing, a new mixed fluid is formed, causing the fluids above and below the interface to continuously change position. Under the combined action of the inner and outer blades, the movement and aggregation of flocs are repeated, accelerating the sedimentation effect.

[0052] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the specific embodiments described above. The specific embodiments and descriptions in the specification are merely for further illustrating the principles of the invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the claims and their equivalents.

Claims

1. A high-efficiency integrated sewage treatment equipment, characterized in that, The device includes a flocculation unit installed in a flocculation tank. The flocculation unit includes a drive component (1), a hollow drive shaft (2), a dosing container (7), and an impeller assembly (5). The drive component (1) is fixed to the top of the flocculation tank and is connected to the top of the drive shaft (2). The bottom of the drive shaft (2) is connected to the bottom of the flocculation tank via a bearing (6). The dosing container (7) and the impeller assembly (5) are both mounted on the drive shaft (2), with the dosing container located above the impeller assembly. The dosing container communicates with the inner cavity of the drive shaft (2). The drive shaft (2) is provided with several outlet holes (2). 1) The impeller assembly (5) includes a lower ring (51) and an upper ring (52) coaxially sleeved on the drive shaft. The lower ring (51) and the upper ring (52) are spaced apart along the axial direction of the drive shaft. A number of blade groups are evenly distributed circumferentially between the lower ring (51) and the upper ring (52). Each blade group includes an inner blade and an outer blade arranged radially. The inner blade and the outer blade are located in the same radial plane. The inner blade is a plate-like structure with two arc-shaped edges protruding towards the drive shaft, and the outer blade is a plate-like structure with two arc-shaped edges protruding away from the drive shaft. The top of the dosing container (7) is above the liquid surface and the bottom is below the liquid surface; the bottom of the dosing container (7) is provided with several auxiliary blades (71). The impeller assembly (5) has an axially symmetrical structure; The transmission shaft (2) has an upper blade (3) and a lower blade (4) horizontally arranged in the middle. The bottom end of the upper blade (3) and the top end of the lower blade (4) are connected. When the upper blade (3) rotates with the transmission shaft, it generates a rotating fluid that moves upward around the transmission shaft. When the lower blade (4) rotates with the transmission shaft, it generates a rotating fluid that moves downward around the transmission shaft. With the axial symmetry plane of the impeller assembly (5) as the interface, the upper blade is located above the interface and the lower blade is located below the interface.

2. The high-efficiency integrated sewage treatment equipment according to claim 1, characterized in that, The lower surface of the upper ring (52) is provided with an upper auxiliary blade (521) and is located between the inner blade and the outer blade; when the upper auxiliary blade (521) rotates with the drive shaft, it generates a downward rotating fluid between the inner blade and the outer blade centered on the drive shaft.

3. The high-efficiency integrated sewage treatment equipment according to claim 1, characterized in that, The upper surface of the lower ring (51) is provided with a lower auxiliary blade (511), which is located between the inner blade and the outer blade. When the lower auxiliary blade (511) rotates with the drive shaft, it generates an upward rotating fluid between the inner blade and the outer blade, centered on the drive shaft.

4. The high-efficiency integrated sewage treatment equipment according to claim 1, characterized in that, The number of blade groups is 2 to 4.

5. The high-efficiency integrated sewage treatment equipment according to claim 1, characterized in that, The uppermost discharge port on the drive shaft is located below the upper end face of the impeller assembly, and the lowermost discharge port is located above the lower end face of the impeller assembly.

6. The high-efficiency integrated sewage treatment equipment according to claim 5, characterized in that, The distance between the uppermost discharge port on the drive shaft and the upper end face of the impeller assembly is 100-300mm, and the distance between the lowermost discharge port on the drive shaft and the lower end face of the impeller assembly is 100-300mm.

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