Wastewater treatment device with stirring function

Abstract

The application provides a wastewater treatment device with stirring function, and relates to the technical field of wastewater treatment. The device comprises a shell and a core mixing system arranged in the shell. The core mixing system comprises a center shaft driven by a motor. A horn sleeve for collecting upper fluid is arranged on the upper part of the center shaft. The horn sleeve is connected to a right-angle pipe provided with a closing block through a collecting pipe. A bottom sleeve and a bottom ring provided with diffusion holes are connected to the bottom of an outer cavity. The lower part of the center shaft is also provided with a horn sleeve and is connected to a sleeve pipe through a circulating pipe. The outlet of the sleeve pipe is connected to a top cavity. A top sleeve and a top ring provided with diffusion holes are connected to the top cavity. A impeller, a booster wheel associated with the impeller and used for pressurizing the liquid flow in the right-angle pipe, and a stirring wheel used for destroying the laminar flow are arranged on the center shaft. In operation, forced bidirectional vertical convection is formed through two independent flow channels of upward flow and downward flow. The bidirectional vertical convection is supplemented by pressurized jet flow and anti-laminar flow stirring, so that the rapid and uniform mixing of the reagent in the full reactor depth range is realized.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and more specifically, to a wastewater treatment device with a stirring function. Background Technology

[0002] In industrial and municipal wastewater treatment processes, chemical treatments such as coagulation, flocculation, and neutralization are crucial. The typical procedure involves adding liquid or solid chemical agents to the upper section of a wastewater reaction tank. A mechanical agitator then rotates to initially mix the agents with the wastewater and induce a chemical reaction. Existing technologies commonly use vertical shaft agitators, powered by a motor mounted on top of the tank, which drives a vertical shaft and single or multiple layers of impellers (such as turbine or propeller blades) mounted on it. This agitation method primarily generates strong radial or circumferential flow, creating a highly turbulent zone in the horizontal direction near the agitator, thereby rapidly dispersing the added chemicals.

[0003] However, conventional mixing methods have significant hydrodynamic drawbacks when dealing with conditions requiring uniform mixing throughout the tank. Because the flow field generated by mixing is primarily confined to the horizontal direction, the axial (vertical) fluid transport capacity is severely insufficient. This causes high-density chemicals to tend to stagnate at the top of the tank after addition, making it difficult to effectively transport them to the bottom. Simultaneously, wastewater in the slow-flowing area at the bottom of the tank is also difficult to lift to the top for sufficient contact with the chemicals. As a result, significant concentration stratification and mixing dead zones form within the reaction tank, with excessively high chemical concentrations at the top and severely insufficient concentrations at the bottom. This uneven mixing directly leads to two serious consequences: first, the chemical reaction occurs only locally and intensely, with a large amount of chemicals being lost with the water flow without participating in the effective reaction, resulting in significant waste and increased costs; second, the overall reaction rate and completeness are drastically reduced, resulting in uneven floc growth and poor settling performance, ultimately leading to unstable effluent quality that fails to meet the expected treatment standards, severely restricting the efficiency and economy of the treatment plant. Summary of the Invention

[0004] (a) Technical problems to be solved In view of the problems existing in the prior art, the present invention provides a wastewater treatment device with a stirring function to solve the technical problems mentioned in the background art.

[0005] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: a wastewater treatment device with a stirring function, comprising a circulation mechanism and a stirring mechanism; The circulation mechanism includes a tilting component, a pressurizing component, and a diffusion component. The circulation mechanism can allow wastewater with different concentrations at the upper and lower ends to flow between each other by rotating, thus greatly increasing the stirring effect. The flipping component mixes wastewater of different concentrations at the top and bottom ends through two separate spaces, thereby improving the stirring effect of wastewater treatment. The pressurizing component rotates as it agitates the wastewater, generating pressure that forces the wastewater with a higher concentration of medicine solution at the upper end to flow into the side with a lower concentration of wastewater at the lower end, thereby improving the circulation effect. The diffusion component enhances the mixing effect of the drug solution and wastewater at both ends as the wastewater is stirred, thereby improving the wastewater treatment effect. The stirring mechanism provides power for the stirring of the entire wastewater treatment process.

[0006] Preferably, the flipping assembly includes a drive shaft, the upper end of which is connected to and installed with multiple sets of top tubes, and a top sleeve and a top ring coaxially arranged with the drive shaft are connected and installed between the multiple top tubes. Multiple sets of diffusion holes are formed on the outer wall of the top sleeve and the top ring.

[0007] Preferably, the lower end of the drive shaft is connected to and installed with multiple sets of bottom tubes, and bottom sleeves and bottom rings are respectively connected and installed between the multiple sets of bottom tubes. The sidewalls of the bottom sleeves and the bottom rings are provided with multiple sets of diffusion holes.

[0008] Preferably, a sleeve is provided inside the drive shaft, the lower end of the sleeve is divided into multiple groups and connected to internal blocks respectively, the internal blocks are nested and fixed inside the bottom tube, a sealing disc is installed at the upper end of the sleeve, the sealing disc is fixedly installed inside the drive shaft, a sealing block is installed inside each top tube, a top cavity is formed between the top tube, drive shaft, sealing block and sealing disc, and an outer cavity is formed between the outer wall of the sleeve, drive shaft, bottom tube, sealing disc and internal blocks.

[0009] Preferably, each of the top tubes and the area outside the top sleeve is connected to two sets of collection tubes, and each of the top tubes and the area outside the bottom sleeve is connected to a circulation tube, and a horn sleeve is installed on each of the collection tubes and the circulation tubes.

[0010] Preferably, the pressurizing assembly includes a right-angle tube connecting the top tube and the drive shaft, the upper end of the right-angle tube connecting to the space where the collection tube is located, the other end of the right-angle tube connecting to the outer cavity, and a pressurizing sleeve being installed inside a plurality of the right-angle tubes.

[0011] Preferably, a bidirectional rod is rotatably installed inside the pressurizing sleeve, a pressurizing wheel is installed in the middle of the bidirectional rod, impellers are installed at both ends of the bidirectional rod, a flat groove is opened inside the pressurizing sleeve, and the pressurizing wheel is located at half of the flat groove.

[0012] Preferably, the diffusion assembly includes two sets of reinforcing rods, with the upper and lower sets of reinforcing rods respectively connected to the top sleeve and the bottom sleeve. Each reinforcing rod is symmetrically equipped with two limiting rods, and each limiting rod is rotatably connected to a stirring wheel.

[0013] Preferably, the stirring mechanism includes a fixed housing, a motor is fixedly mounted on the upper end of the housing, the drive end of the motor is connected to the transmission shaft, and a feed pipe and a drug inlet pipe are respectively connected to the housing.

[0014] Preferably, the lower end of the housing is connected to a discharge pipe, and the discharge pipe is connected to external equipment.

[0015] (III) Beneficial Effects Compared with the prior art, the present invention provides a wastewater treatment device with a stirring function, which has the following beneficial effects: This invention solves the inherent technical problem of uneven mixing in the vertical direction in traditional stirring methods by constructing a forced internal bidirectional convection circulation system. Its core lies in the coordinated work of the upward and downward flow channels to actively drive the high-concentration drug solution to migrate to the bottom of the wastewater, while simultaneously driving the low-concentration wastewater to migrate to the top. This rapidly reduces the concentration gradient throughout the entire depth of the reactor, achieving uniform mixing of the agent and pollutants across the entire area, thereby improving the reaction rate and treatment effect.

[0016] This invention transforms the mixing process from passive turbulence to active directional transport. The upper horn sleeve efficiently collects the high-concentration fluid from the upper layer and guides it through the collection pipe. Under the sealed guidance of the closed block, it enters the right-angle pipe and is then transported through the outer cavity to the bottom sleeve and bottom ring. Finally, it is sprayed into the most difficult-to-mix area at the bottom of the pool in the form of multiple fine jets through the diffusion holes on it. At the same time, the lower horn sleeve lifts the low-concentration wastewater from the bottom layer to the top cavity through the circulation pipe and the sleeve. Then, it is sprayed onto the upper surface in a large area through the diffusion holes on the top sleeve and top ring. This bidirectional, synchronous forced convection mechanism ensures high-speed exchange and efficient dilution of materials in the vertical dimension.

[0017] This invention enhances the mixing intensity of key processes through an integrated power and pressurization unit. The main impeller, driven by a motor, generates the main turbulence, while the associated pressurization impeller applies additional dynamic pressure to the downward high-concentration liquid flow through the right-angle tube. This results in the jet ejected from the bottom diffuser having higher kinetic energy and penetration depth, thereby creating more intense local disturbances at the bottom of the pool and greatly enhancing the microscopic mixing process of the high-concentration medium and the main wastewater.

[0018] The anti-laminar flow unit set up in this invention effectively ensures the thoroughness of mixing throughout the entire process. The independently operating stirring wheel, through its specially designed blades, continuously generates strong shear and disturbance in the main flow field, which is specifically designed to break any stable laminar flow interface that may form, prevent the formation of mixing dead zones, and ensure that the fluid in the entire reactor is always in a highly random turbulent state, providing an ideal hydrodynamic environment for full chemical reaction.

[0019] The multi-mechanism synergistic mixing mode constructed in this invention achieves superimposed efficiency. Forced bidirectional convection is responsible for rapid macroscopic material transport and concentration equilibrium, pressurized jet enhances microscopic mixing at key interfaces, and anti-laminar stirring maintains the turbulent foundation of the fluid throughout the entire domain. The three are driven by the same source and work together to form a three-dimensional, efficient and stable mixing network, which enables a step-by-step improvement in mixing efficiency and uniformity, thereby significantly shortening the process cycle and improving the equipment's processing capacity.

[0020] The structural design of this invention is based on mature mechanical and fluid dynamics principles, ensuring reliable operation and easy control. All mixing functions are achieved through mechanical transmission and flow channel guidance, eliminating the need for complex external circulation systems or numerous internal guide plates. The overall mixing intensity can be synchronously controlled by adjusting the speed of a single motor, providing excellent adaptability and adjustability to different wastewater characteristics and treatment requirements. While ensuring superior performance, it also takes into account operational reliability and economy. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a wastewater treatment device with a stirring function according to the present invention. Figure 2 This is a cross-sectional view of the shell structure in this invention; Figure 3 This is a schematic diagram of the structure of the top ring and the bottom ring in this invention; Figure 4 In this invention Figure 3 A schematic diagram of the cross-sectional structure; Figure 5 In this invention Figure 4 A schematic diagram of the cross-sectional structure; Figure 6 This is a schematic diagram of the pressurization component in this invention; Figure 7 This is a cross-sectional view of the pressure-boosting sleeve in this invention.

[0022] In the diagram: 11. Tilting assembly; 12. Drive shaft; 13. Top tube; 14. Top sleeve; 15. Top ring; 16. Diffuser hole; 17. Bottom tube; 18. Bottom sleeve; 19. Bottom ring; 110. Sleeve; 111. Inner block; 112. Sealing disc; 113. Sealing block; 114. Top cavity; 115. Outer cavity; 116. Collection tube; 117. Circulation tube; 118. Horn sleeve; 21. Pressurizing assembly; 22. Right-angle tube; 23. Pressurizing sleeve; 24. Two-way rod; 25. Pressurizing wheel; 26. Impeller; 27. Flat groove; 31. Diffuser assembly; 32. Reinforcing rod; 33. Limiting rod; 34. Stirring wheel; 41. Stirring mechanism; 42. Shell; 43. Motor; 44. Feed pipe; 45. Drug inlet pipe; 46. Discharge pipe. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0025] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0026] Please see Figures 1 to 7 This embodiment mainly includes a shell 42 as a container, and a core mixing system integrated inside it. The core mixing system consists of a drug dosing interface, an internal flow guide pipe, a mechanically driven impeller 26, and anti-laminar flow components, which work together to establish efficient bidirectional convection.

[0027] 1. Overall structure and drug dosage The shell 42 is used to contain the wastewater to be treated. The chemical solution is quantitatively added to the upper area inside the shell 42 through the chemical inlet pipe 45. In the initial state, the high concentration of chemical solution mainly accumulates in the upper layer of wastewater.

[0028] 2. Detailed Composition of the Core Hybrid System 2.1 Drug delivery channel (high concentration to low concentration transport path) This channel is responsible for actively collecting wastewater from the upper high-concentration drug solution mixing zone and forcibly transporting it to the bottom of the pool for release.

[0029] Collection and diversion: In the upper region of the stirring shaft, multiple funnel-shaped sleeves 118 are fixedly installed. The openings of these funnel sleeves 118 face upwards to efficiently collect the upper fluid. The outlet of each funnel sleeve 118 is connected to a collection pipe 116. The end of the collection pipe 116 is connected to a right-angle pipe 22. A sealing block 113 is provided at the right-angle pipe 22 to control the flow direction and ensure that the fluid can only move along the designed path.

[0030] Bottom diffusion: The right-angle tube 22 introduces the fluid into an annular outer cavity 115. The bottom of the outer cavity 115 is connected to the bottom sleeve 18 and the bottom ring 19. A large number of diffusion holes 16 are evenly opened in the circumference on the bottom sleeve 18 and the bottom ring 19. The high-concentration drug solution mixture is sprayed into the low-concentration wastewater at the bottom of the shell 42 in the form of multiple fine jets through these diffusion holes 16.

[0031] 2.2 Wastewater lifting channel (low-concentration to high-concentration transport path) This channel operates in the opposite direction to the upper channel, responsible for lifting the bottom wastewater to the top to achieve fluid circulation and dilution.

[0032] Bottom collection and lifting: In the lower area of ​​the stirring shaft, multiple downward-facing horn-shaped sleeves 118 (which can be referred to as lower horn-shaped sleeves 118 for distinction) are also provided to collect bottom wastewater. The lower horn-shaped sleeves 118 are connected to a sleeve 110 through a circulation pipe 117.

[0033] Top release: The sleeve 110 extends upward, conveying the bottom wastewater to an annular top cavity 114. The top cavity 114 is connected to the top sleeve 14 and the top ring 15. The top sleeve 14 and the top ring 15 are also provided with a large number of diffusion holes 16. The bottom wastewater is thus sprayed over a large area to the upper high-concentration area, serving to dilute and mix it.

[0034] 2.3 Power and Boosting System The system's driving force comes from a motor 43, which drives the central shaft to rotate.

[0035] Impeller 26 and booster: Multiple impellers 26 are mounted on the central shaft. The power of the impellers 26 is transmitted to a dedicated booster 25, which is located in the flow channel formed by the right-angle tube 22 or at its outlet. Its rotation can additionally pressurize the liquid flow that passes through the right-angle tube 22 and is transported from the upper layer to the lower layer, thereby enhancing its jet intensity and penetration depth, and thus strengthening the mixing effect of the lower layer.

[0036] 2.4 Anti-laminar flow mixing system To prevent the formation of a stable laminar flow during the main mixing process, which would affect mixing efficiency, multiple agitators 34 are also installed on the central shaft. The blade angles and shapes of these agitators 34 are specially designed to disrupt any regular flow layers that may form, increasing the random motion and turbulence intensity of the fluid.

[0037] 3. The working process and mixing principle of the device S1: Initial drug administration and initiation.

[0038] The wastewater is located inside the shell 42. The treatment agent is added to the upper layer of the wastewater through the inlet pipe 45. The motor 43 is started, which drives the central shaft and all rotating parts (impeller 26, booster wheel 25, stirring wheel 34, etc.) installed on it to start rotating.

[0039] S2: Establish forced convection circulation (bidirectional mixing).

[0040] As the device operates, two independent internal flow channel systems are activated simultaneously, forming a closed convection cycle: Downstream flow (high concentration → low concentration): The upper layer of wastewater, initially mixed with chemicals and with a relatively high concentration, enters the upper funnel sleeve 118 under fluid pressure and the collecting action of the funnel sleeve 118, and is collected through the collection pipe 116. Guided by the sealing block 113, the liquid flows into the right-angle pipe 22. While flowing through the right-angle pipe 22, it gains additional kinetic energy under the pressure of the booster wheel 25. The pressurized liquid flows into the outer cavity 115, and finally is sprayed into the static or low-velocity area at the bottom of the pool in the form of a high-speed jet from the numerous diffuser holes 16 of the bottom sleeve 18. This process actively "implants" the high-concentration chemicals into the bottom of the pool.

[0041] Upward flow (low concentration → high concentration): Simultaneously, the wastewater with lower concentration at the bottom of the pool is collected by the lower funnel sleeve 118 and flows into the sleeve 110 through the circulation pipe 117. The sleeve 110 lifts this portion of wastewater to the top and sends it into the top cavity 114. Subsequently, it is evenly sprayed upward through the diffusion holes 16 on the top sleeve 14. This process transports the bottom "clean water" to the upper layer, diluting the high concentration area and promoting diffusion.

[0042] S3: Main body turbulent mixing and anti-laminar flow.

[0043] While forced convection is in progress, the main impeller 26 rotates within the casing 42 to generate strong radial and tangential turbulence, breaking up large fluid clumps. The stirring wheel 34 is specifically designed to disrupt any possible laminar interfaces, ensuring that the fluid within the entire reactor is in a highly turbulent state, providing ideal conditions for the microscopic reaction between reagent molecules and pollutants.

[0044] S4: Full reaction and discharge.

[0045] Under the combined effect of the above-mentioned triple mixing mechanism (forced vertical convection, main body turbulent stirring, and anti-laminar shearing), the reagent and wastewater are rapidly and uniformly mixed in three-dimensional space. After a preset sufficient reaction time, the treated water is discharged through the discharge pipe 46 and enters the subsequent process unit.

[0046] Working Principle Summary: The core innovation of this device lies in breaking through the traditional stirring model that relies solely on overall turbulence. Through a mechanical structure, it actively constructs a forced internal convection loop that transports high-concentration liquid from top to bottom and low-concentration liquid from bottom to top. This loop directly exchanges matter along the direction of the largest concentration gradient (vertical direction), greatly accelerating the homogenization process throughout the pool. The booster wheel 25 enhances jet mixing, while the stirring wheel 34 suppresses laminar flow, thus achieving efficient and energy-saving deep mixing.

[0047] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wastewater treatment device with a stirring function, characterized in that: Including a circulation mechanism and a stirring mechanism (41); The circulation mechanism includes a flipping component (11), a pressurizing component (21), and a diffusion component (31). The circulation mechanism can allow wastewater with different concentrations at the upper and lower ends to circulate with each other by rotating, thus greatly increasing the stirring effect. The flipping component (11) mixes wastewater of different concentrations at the upper and lower ends through two non-communicating spaces, thereby improving the stirring effect of wastewater treatment. The pressurizing component (21) generates pressure as it rotates while stirring the wastewater, which in turn pushes the wastewater with a higher concentration of medicine solution at the upper end to the side with a lower concentration of wastewater at the lower end, thereby improving the circulation effect. The diffusion component (31) enhances the mixing effect of the drug solution and wastewater at both ends as the wastewater is stirred, thereby improving the wastewater treatment effect; The stirring mechanism (41) provides power for stirring the entire wastewater treatment process.

2. The wastewater treatment device with stirring function according to claim 1, characterized in that: The flipping assembly (11) includes a drive shaft (12), and multiple sets of top tubes (13) are connected and installed at the upper end of the drive shaft (12). A top sleeve (14) and a top ring (15) coaxially arranged with the drive shaft (12) are connected and installed between the multiple top tubes (13). Multiple sets of diffusion holes (16) are opened on the outer wall of the top sleeve (14) and the top ring (15).

3. The wastewater treatment device with stirring function according to claim 2, characterized in that: The lower end of the drive shaft (12) is connected to multiple sets of bottom tubes (17), and bottom sleeves (18) and bottom rings (19) are connected to each other. The sidewalls of the bottom sleeves (18) and the bottom rings (19) are provided with multiple sets of diffusion holes (16).

4. A wastewater treatment device with a stirring function according to claim 3, characterized in that: A sleeve (110) is provided inside the drive shaft (12). The lower end of the sleeve (110) is divided into multiple groups and connected to internal blocks (111) respectively. The internal blocks (111) are nested and fixed inside the bottom tube (17). A sealing disc (112) is installed at the upper end of the sleeve (110). The sealing disc (112) is fixedly installed inside the drive shaft (12). A sealing block (113) is installed in each top tube (13). A top cavity (114) is formed between the top tube (13), the drive shaft (12), the sealing block (113) and the sealing disc (112). An outer cavity (115) is formed between the outer wall of the sleeve (110), the drive shaft (12), the bottom tube (17), the sealing disc (112) and the internal blocks (111).

5. A wastewater treatment device with a stirring function according to claim 4, characterized in that: Each of the top tubes (13) is connected to two sets of collection tubes (116) in the region outside the top sleeve (14), and each of the top tubes (13) is connected to a circulation tube (117) in the region outside the bottom sleeve (18). A horn sleeve (118) is installed on each of the collection tubes (116) and the circulation tubes (117).

6. A wastewater treatment device with a stirring function according to claim 4, characterized in that: The pressurizing assembly (21) includes a right-angle tube (22) connecting the top tube (13) and the drive shaft (12). The upper end of the right-angle tube (22) is connected to the space where the collection tube (116) is located, and the other end of the right-angle tube (22) is connected to the outer cavity (115). A pressurizing sleeve (23) is installed inside the multiple right-angle tubes (22).

7. A wastewater treatment device with a stirring function according to claim 6, characterized in that: A bidirectional rod (24) is rotatably installed inside the pressure boosting sleeve (23). A pressure boosting wheel (25) is installed in the middle of the bidirectional rod (24). Impellers (26) are installed at both ends of the bidirectional rod (24). A flat groove (27) is opened inside the pressure boosting sleeve (23). The pressure boosting wheel (25) is located at half of the flat groove (27).

8. A wastewater treatment device with a stirring function according to claim 3, characterized in that: The diffusion assembly (31) includes two sets of reinforcing rods (32), and the upper and lower sets of reinforcing rods (32) are respectively connected to the top sleeve (14) and the bottom sleeve (18). Each reinforcing rod (32) is symmetrically equipped with two limiting rods (33), and each limiting rod (33) is rotatably connected to a stirring wheel (34).

9. A wastewater treatment device with a stirring function according to claim 2, characterized in that: The stirring mechanism (41) includes a fixed housing (42), a motor (43) is fixedly installed at the upper end of the housing (42), the drive end of the motor (43) is connected to the transmission shaft (12), and a feed pipe (44) and a medicine inlet pipe (45) are respectively connected to the housing (42).

10. A wastewater treatment device with a stirring function according to claim 9, characterized in that: The lower end of the housing (42) is connected to a discharge pipe (46), and the discharge pipe (46) is connected to an external device.

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