A circulating flow enhanced hydrofoil type stirring device for sewage treatment

Abstract

The present application relates to sewage treatment stirring equipment technical field, specifically, it relates to a kind of sewage treatment is enhanced with annular flow water wing type stirring device, including mounting frame and the sewage treatment tank of mounting frame top installation, the top of the sewage treatment tank is equipped with motor, the output end of the motor is through sewage treatment tank and is fixedly connected with stirring rod, in the present application, through the aileron installed on the blade outer side trailing edge, realize to the blade wake dispersing vortex, give ahead to downlink water flow circumferential pre-rotation angle, reduce water loss, strengthen the internal rotating flow of guide cylinder basis, through the conical guide frame installed on the bottom end of stirring rod, realize center water flow converging flow, water flow is guided to the guide rib two of inside of lower horn expansion, complete secondary directional flow guide, through the upper horn expansion, guide rib one and lower horn expansion, guide rib two installed on the upper and lower ends of guide cylinder, regular surface water flow, spread bottom water flow, synergistically enhance the annular flow intensity in tank.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment mixing equipment technology, and more specifically, to a circulating enhanced hydrofoil mixing device for wastewater treatment. Background Technology

[0002] In wastewater treatment systems, hydrofoil mixers are core equipment for wastewater biochemical treatment and homogenization of water. Compared to traditional mixing structures, hydrofoil impellers have lower resistance, lower energy consumption, and smoother operation. When combined with a guide tube, they can constrain the water flow direction, forming a vertical water circulation within the tank, maintaining the sludge in suspension, and ensuring sufficient reaction between wastewater and microorganisms. They are widely used in various domestic and industrial wastewater treatment scenarios.

[0003] Traditional hydrofoil mixers lack a circulation enhancement structure, leading to turbulent eddies at the blade trailing edge during operation. This results in hydraulic energy loss, and the outflow lacks a preset direction, causing erratic downward flow that cannot precisely align with the guide ribs of the flow guide tube. This results in weak circulation intensity and uneven water flow within the tank, easily forming dead zones and accumulating sludge, leading to incomplete wastewater treatment. The conventional solution is to increase the motor speed, which increases equipment energy consumption and wear, raising operating costs. In view of this, we propose a circulating enhanced hydrofoil agitator for wastewater treatment. Summary of the Invention

[0004] The purpose of this invention is to provide a circulating enhanced hydrofoil agitator for wastewater treatment to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides a circulating enhanced hydrofoil agitator for wastewater treatment, comprising a mounting frame and a wastewater treatment tank mounted on top of the mounting frame. A motor is mounted on the top of the wastewater treatment tank, and the output end of the motor passes through the wastewater treatment tank and is fixedly connected to an agitator rod. Multiple blades are fixedly connected to the end of the agitator rod away from the motor. A secondary wing is mounted on the side of the blades away from the agitator rod. Multiple support rods are installed in a ring shape on the bottom of the inner wall of the wastewater treatment tank, and a guide tube is fixedly connected to the side of the support rod away from the wastewater treatment tank.

[0006] As a preferred embodiment of the present invention, the top of the guide tube is fixedly connected to an upper flared opening, and the inner wall of the upper flared opening is provided with evenly distributed guide ribs in a ring shape.

[0007] As a preferred embodiment of the present invention, the bottom of the guide tube is fixedly connected to a lower flared opening, and the inner wall of the lower flared opening is provided with evenly distributed guide ribs in a ring shape.

[0008] As a preferred embodiment of the present invention, a connecting rod is fixedly connected to the bottom of the stirring rod, and a cross connector is fixedly connected to the bottom of the connecting rod.

[0009] As a preferred embodiment of the present invention, a tapered guide frame is fixedly connected to the end of the cross connector away from the connecting rod.

[0010] As a preferred embodiment of the present invention, an inlet is installed through one side of the top of the wastewater treatment tank.

[0011] As a preferred embodiment of the present invention, the bottom of the wastewater treatment tank is provided with a drain outlet.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: In this invention, the ailerons installed on the outer trailing edge of the blades disperse and eliminate eddies in the blade wake, pre-spinning the downward water flow in the circumferential direction, reducing hydraulic losses, and strengthening the swirling foundation inside the guide tube. The conical guide frame installed at the bottom of the stirring rod gathers and concentrates the central water flow, guiding the water flow to the guide ribs on the inner side of the lower flared end for secondary directional flow guidance. The upper flared end and guide ribs 1 and 2 installed at the upper and lower ends of the guide tube regulate the surface water flow and disperse the bottom water flow, synergistically enhancing the circulation intensity inside the tank, reducing dead zones, and inhibiting sludge deposition. The stirring effect can be guaranteed without increasing the rotation speed, reducing the energy consumption of the equipment. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the installation of the rubber limiting plate of the present invention; Figure 3 This is a schematic diagram of the sliding plate of the present invention; Figure 4 This is a cross-sectional view of one side of the swing plate of the present invention; The meanings of the labels in the diagram are as follows: 1. Mounting frame; 2. Wastewater treatment tank; 3. Motor; 4. Stirring rod; 5. Blade; 6. Aileron; 7. Support rod; 8. Flow guide tube; 9. Upper flared end; 10. Flow guide rib one; 11. Lower flared end; 12. Flow guide rib two; 13. Connecting rod; 14. Cross connector; 15. Conical flow guide frame; 16. Liquid inlet; 17. Liquid outlet. Detailed Implementation

[0014] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0016] Please see Figure 1-4 As shown, this embodiment provides a circulating enhanced hydrofoil agitator for wastewater treatment, including a mounting frame 1 and a wastewater treatment tank 2 mounted on top of the mounting frame 1. The mounting frame 1 provides stable support, shock absorption, and positioning for the entire device, ensuring stable operation without shaking. A motor 3 is mounted on top of the wastewater treatment tank 2, providing stable rotational power for the overall agitation mechanism. The output end of the motor 3 passes through the wastewater treatment tank 2 and is fixedly connected to a stirring rod 4. Torque is transmitted through the stirring rod 4, driving the lower agitator components to rotate synchronously. The end of the stirring rod 4 furthest from the motor 3... Multiple blades 5 are fixedly connected. The rotation of the blades 5 generates downward water flow, forming vertical water flow power inside the tank. Auxiliary wing 6 is installed on the side of the blades 5 away from the stirring rod 4. The auxiliary wing 6 can eliminate the eddy current loss at the tail of the blades and apply a pre-rotation angle to the water flow in advance to enhance the circulation foundation. Multiple support rods 7 are installed in a ring shape at the bottom of the inner wall of the sewage treatment tank 2. The multiple sets of support rods 7 are arranged in a ring to ensure uniform force. A guide tube 8 is fixedly connected on the side of the support rod 7 away from the sewage treatment tank 2, so that the guide tube 8 is fixedly installed in the center and provides a stable structural foundation for the directional flow of water.

[0017] It should be noted that the aileron 6 is a small guide vane installed on the outer trailing edge of the blade 5. It is installed at a 15-degree angle along the direction of blade rotation. The aileron 6 is mainly used to disperse the turbulent vortex at the tail of the blade rotation and reduce hydraulic power loss. At the same time, it can give the downstream water flow a circumferential pre-rotation angle in advance, so that the water flow can be accurately guided to the bottom guide rib 2 12. In conjunction with the guide structure, it strengthens the overall circulation intensity inside the tank, effectively eliminates dead zones in the water body, and improves the uniformity of sewage mixing.

[0018] The top of the guide tube 8 is fixedly connected to an upper flared port 9, which can expand the water intake range and gather surface water and scum over a large area. The inner wall of the upper flared port 9 is equipped with evenly distributed guide ribs 10 in a ring shape. The guide ribs 10 evenly distribute and regulate the flow of water, avoiding surface flow deviation and stagnant water areas.

[0019] The bottom of the guide tube 8 is fixedly connected to a lower flared port 11. The lower flared port 11 can spread the concentrated downward water flow smoothly to all sides, preventing the water flow from rushing directly to the bottom of the tank and causing turbulence and sludge accumulation. The inner wall of the lower flared port 11 is equipped with evenly distributed guide ribs 12 in a ring shape. The guide ribs 12 guide the water body after diversion tangentially, enhance the bottom swirling effect, and realize the whole pool circulation flushing.

[0020] A connecting rod 13 is fixedly connected to the bottom of the stirring rod 4. The connecting rod 13 serves to lengthen the transmission and stabilize the lower structure. A cross connector 14 is fixedly connected to the bottom of the connecting rod 13. The cross connector 14 enhances the connection strength and ensures that the bottom guide structure is installed stably and has high coaxiality.

[0021] The end of the cross connector 14 away from the connecting rod 13 is fixedly connected to a tapered guide frame 15. The tapered guide frame 15 can block the dead water corner at the bottom of the main shaft, gather the water flow in the center, and accurately guide the water flow to the surface of the guide rib 12, which, together with the bottom rib, further amplifies the circulation effect.

[0022] The top side of the sewage treatment tank 2 is equipped with an inlet 16 for stable flow of sewage to be treated, so as to realize continuous water intake operation of the equipment.

[0023] The bottom of the wastewater treatment tank 2 is equipped with a drain port 17, which is used to smoothly discharge the wastewater after the stirring reaction is completed, thus completing the water circulation treatment process.

[0024] During use, the sewage first enters the sewage treatment tank 2 through the inlet 16. The equipment is supported by the mounting frame 1. The motor 3 is started, and the motor 3 drives the stirring rod 4 to rotate, which drives the blade 5 and the outer auxiliary wing 6 to rotate synchronously, forming downward stirring of the water. The auxiliary wing 6 gives the water flow a pre-rotation angle in advance, reducing tail vortex loss and increasing the flow rate and power of the downward water flow.

[0025] During the mixing process, the guide tube 8 is fixed inside the tank by the support rod 7. The upper flared mouth 9, together with the guide rib 10, gathers the surface water and evenly directs the water flow. After being pressurized by the blades 5, the water flows vertically downward along the guide tube 8 and passes through the conical guide frame 15 at the bottom of the mixing rod 4. The conical guide frame 15 gathers and guides the downward water flow in the center, accurately diverting and guiding the concentrated water flow to the area of ​​the bottom guide rib 12, avoiding direct turbulence of the central water flow and eliminating dead water corners at the bottom of the main shaft.

[0026] After being guided by the conical guide frame 15, the water flows evenly against the inner wall of the lower flared opening 11. With the help of the guide ribs 12, it completes the secondary swirling guidance, so that the water flows evenly around the bottom of the tank along the tangential direction, forming a stable and high-intensity overall circulation. The water circulation is uniform throughout the process, with no dead corners where mud accumulates. After the sewage is fully stirred and reacted, it is finally discharged from the bottom drain 17, completing the sewage treatment stirring operation.

[0027] 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 above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the 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 appended claims and their equivalents.

Claims

1. A circulating enhanced hydrofoil agitator for wastewater treatment, comprising a mounting frame (1) and a wastewater treatment tank (2) mounted on top of the mounting frame (1), characterized in that: A motor (3) is installed on the top of the sewage treatment tank (2). The output end of the motor (3) passes through the sewage treatment tank (2) and is fixedly connected to a stirring rod (4). Multiple blades (5) are fixedly connected to the end of the stirring rod (4) away from the motor (3). Auxiliary wing (6) is installed on the side of the blade (5) away from the stirring rod (4). Multiple support rods (7) are installed in a ring shape at the bottom of the inner wall of the sewage treatment tank (2). A guide tube (8) is fixedly connected to the side of the support rod (7) away from the sewage treatment tank (2).

2. The circulating enhanced hydrofoil agitator for wastewater treatment according to claim 1, characterized in that: The top of the guide tube (8) is fixedly connected to an upper horn flare (9), and the inner wall of the upper horn flare (9) is equipped with evenly distributed guide ribs (10) in a ring shape.

3. The circulating enhanced hydrofoil agitator for wastewater treatment according to claim 2, characterized in that: The bottom of the guide tube (8) is fixedly connected to a lower horn flare (11), and the inner wall of the lower horn flare (11) is equipped with evenly distributed guide ribs (12) in a ring shape.

4. The circulating enhanced hydrofoil agitator for wastewater treatment according to claim 1, characterized in that: The bottom of the stirring rod (4) is fixedly connected to a connecting rod (13), and the bottom of the connecting rod (13) is fixedly connected to a cross connector (14).

5. A circulating enhanced hydrofoil agitator for wastewater treatment according to claim 4, characterized in that: The cross connector (14) is fixedly connected to a tapered guide frame (15) at the end away from the connecting rod (13).

6. The circulating enhanced hydrofoil agitator for wastewater treatment according to claim 1, characterized in that: The wastewater treatment tank (2) has an inlet (16) installed on one side of its top.

7. The circulating enhanced hydrofoil agitator for wastewater treatment according to claim 1, characterized in that: The bottom of the wastewater treatment tank (2) is connected to a drain outlet (17).

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