A stirring device for sewage efficient flocculation clarification

Abstract

This utility model relates to a stirring device for efficient flocculation and clarification of wastewater, aiming to solve the problems of low stirring efficiency, uneven mixing, and high energy consumption in existing stirring devices. The core of the device includes a stirring tank and its internal rotating structure. The rotating structure consists of several evenly distributed stirring rollers. The stirring rollers are connected to a drive gear via a transmission gear. The drive gear is linked to an adjusting gear via a connecting rod. The adjusting gear meshes with a fixed gear and is fixed to the stirring tank. A connecting frame passes through the connecting rod and is connected to a drive shaft, which mechanically drives the device. A limiting plate is threaded above the adjusting gear, and a blocking plate is threaded at the end of the connecting rod and fixed to the drive gear. A fixing seat passing through the connecting rod is provided above the connecting frame, with a T-shaped limiting rod embedded in the fixing seat. The limiting rod is fixed to the transmission gear. The stirring rollers include a spiral curved plate connected to the transmission gear, the curved plate being centrally symmetrical and having gaps.

Description

Technical Field

[0001] This utility model provides a stirring device, and particularly relates to a stirring device for efficient flocculation and clarification of wastewater. Background Technology

[0002] In the field of efficient wastewater flocculation and clarification, the mixing device is one of the key pieces of equipment. Its main function is to promote full contact and collision between the flocculant and suspended particles in the wastewater through mechanical agitation, accelerating the formation and sedimentation of flocs, thereby achieving wastewater clarification. Traditional mixing devices typically include a mixing tank with an internal mixing shaft and a mixing paddle. The mixing shaft is driven by a motor, which rotates to drive the mixing paddle to agitate the wastewater. While this device can achieve wastewater flocculation and clarification to a certain extent, it has some shortcomings in practical applications.

[0003] Existing wastewater mixing devices have a relatively simple basic structure, typically consisting of a mixing tank, a mixing shaft, and a mixing paddle. The mixing shaft is driven by a motor, and the mixing paddle is fixed to the shaft; the rotation of the shaft achieves the mixing of wastewater. However, in traditional mixing devices, the movement of the mixing paddle is limited, usually only capable of simple circular motion, unable to achieve complex fluid movements. This results in low mixing efficiency, insufficient contact between flocculant and suspended particles, affecting floc formation and sedimentation. Due to the limited movement of the mixing paddle, the mixing of flocculant and suspended particles in the wastewater is not uniform, easily leading to localized over-mixing and insufficient mixing in other areas, affecting the overall clarification effect. To improve mixing efficiency, existing mixing devices often require increasing the motor power, but this leads to increased energy consumption and higher operating costs. Utility Model Content

[0004] To solve the above problems, this application provides a stirring device for efficient flocculation and clarification of wastewater.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a stirring device for efficient flocculation and clarification of wastewater, comprising a stirring tank, wherein the stirring tank is provided with a rotating structure, the rotating structure comprising a plurality of uniformly distributed stirring rollers located inside the stirring tank, a drive gear being connected above the stirring rollers via a transmission gear, an adjusting gear being connected above the drive gear via a connecting rod, and a fixed gear being provided between the adjusting gears and fixedly connected to the stirring tank.

[0006] A connecting frame, through which a connecting rod passes, is provided between the stirring rollers, and a driving device is mechanically connected to the top of the connecting frame via a fixedly connected drive shaft.

[0007] Preferably, the transmission gear and drive gear are located below the connecting frame, and the adjusting gear is located above the connecting frame; the adjusting gear and the fixed gear mesh with each other and are fixedly connected to the connecting rod.

[0008] Preferably, a limiting plate is threadedly connected above the adjusting gear and above the fixed gear, and a blocking plate located below the driving gear is threadedly connected to the end of the connecting rod away from the adjusting gear, and is threadedly connected to the driving gear.

[0009] Preferably, the connecting frame is provided with a fixed seat located between the adjusting gear and itself, and the center of the fixed seat is penetrated by the connecting rod; a T-shaped limiting rod is provided inside one side of the fixed seat, which penetrates itself and the connecting frame.

[0010] Preferably, the limiting rod and the transmission gear are fixedly connected, and the stirring roller includes a pair of centrally symmetrically distributed curved plates that are fixedly connected to the transmission gear. The curved plates are spirally oriented as a whole, and a certain gap is left between the curved plates.

[0011] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0012] This high-efficiency wastewater flocculation and clarification mixing device uses a drive unit to rotate a drive shaft, which is fixedly connected to a connecting frame. This causes the connecting frame to rotate in a circular motion under the drive of the drive unit. The rotation of the connecting frame drives an adjusting gear above it to rotate in a circular motion. The adjusting gear meshes with the teeth of a fixed gear that is fixedly connected to the mixing tank, causing the adjusting gear to rotate on its own axis while rotating in a circular motion. The adjusting gear transmits the rotational motion to the drive gear via a connecting rod. The drive gear then drives a transmission gear to rotate, which in turn drives the mixing roller to rotate. Due to the meshing of the adjusting gear and the fixed gear, the mixing roller rotates in the opposite direction to its circular motion around the drive shaft. This combined motion mode allows the mixing roller to more efficiently agitate the wastewater, promoting full contact and collision between the flocculant and suspended particles in the wastewater, accelerating floc formation and sedimentation, thereby achieving a more efficient clarification operation.

[0013] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of a stirring device for efficient flocculation and clarification of wastewater according to the present invention;

[0015] Figure 2 This is a cross-sectional view of a stirring device for efficient flocculation and clarification of wastewater according to the present invention.

[0016] Figure 3 This is an exploded view of the rotating structure of a stirring device for efficient flocculation and clarification of wastewater according to this utility model.

[0017] Figure 4 This is an exploded view of the stirring roller of a stirring device for efficient flocculation and clarification of wastewater according to this utility model.

[0018] As shown in the figure:

[0019] 1. Mixing tank; 2. Rotating structure; 3. Mixing roller; 4. Transmission gear; 5. Drive gear; 6. Connecting rod; 7. Adjusting gear; 8. Fixed gear; 9. Connecting frame; 10. Drive shaft; 11. Drive device; 12. Limiting plate; 13. Baffle plate; 14. Fixed seat; 15. Limiting rod; 16. Curved plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] like Figure 1 and Figure 2As shown, this utility model relates to a stirring device for efficient flocculation and clarification of wastewater, the core of which includes a stirring tank 1 and a rotating structure 2 inside. The rotating structure 2 consists of several evenly distributed stirring rollers 3. The stirring rollers 3 are connected to a drive gear 5 through a transmission gear 4. The drive gear 5 is linked to an adjusting gear 7 through a connecting rod 6. The adjusting gear 7 meshes with a fixed gear 8 and is fixed to the stirring tank 1. A connecting frame 9 passes through the connecting rod 6 and is connected to a drive shaft 10. The drive shaft 10 is mechanically linked to a drive device 11. In addition, a limiting plate 12 is threadedly connected above the adjusting gear 7, and a blocking plate 13 is threadedly connected to the end of the connecting rod 6 and fixed to the drive gear 5. A fixing seat 14 is provided above the connecting frame 9, passing through the connecting rod 6. A T-shaped limiting rod 15 is embedded in the fixing seat 14 and fixed to the transmission gear 4. The stirring roller 3 includes a spiral curved plate 16 connected to the transmission gear 4. The curved plate 16 is centrally symmetrical and has gaps.

[0024] In this embodiment, the stirring roller 3 is connected to the drive gear 5 via the transmission gear 4, and the drive gear 5 is linked to the adjusting gear 7 via the connecting rod 6. The adjusting gear 7 meshes with the fixed gear 8 and is fixed to the mixing tank 1. This design allows the stirring roller 3 to rotate on its own axis while moving in a circular motion around the drive shaft 10, with the rotation direction opposite to the circular motion direction. This combined motion mode significantly improves the mixing efficiency, allowing the flocculant to come into more thorough contact and collision with suspended particles in the wastewater, accelerating the formation and sedimentation of flocs. At the same time, the opposite directions of the rotation and revolution of the stirring roller 3 further enhance the mixing effect and avoid the problem of local over- or under-mixing.

[0025] The connecting frame 9 passes through the connecting rod 6 and connects to the drive shaft 10, which mechanically drives the device 11. The connecting frame 9 serves as the support platform for the entire rotating structure 2, ensuring the synchronous movement of each stirring roller 3. The design of the connecting frame 9 allows the stirring rollers 3 to be evenly distributed and rotate synchronously, ensuring uniform mixing of wastewater within the mixing tank 1. The drive shaft 10 is directly connected to the drive device 11, ensuring efficient power transmission, reducing energy loss, and lowering energy consumption.

[0026] Adjusting gear 7 meshes with and is fixed to the mixing tank 1 with fixed gear 8. Adjusting gear 7 is linked to drive gear 5 via connecting rod 6. Limiting plate 12 is threadedly connected to the upper part of adjusting gear 7, and blocking plate 13 is threadedly connected to the end of connecting rod 6 and fixed to drive gear 5. The meshing relationship between adjusting gear 7 and fixed gear 8 allows the mixing roller 3 to rotate while performing circular motion. The setting of limiting plate 12 and blocking plate 13 restricts the axial displacement of adjusting gear 7 and drive gear 5, ensuring the stability and reliability of the transmission system.

[0027] A fixed seat 14 is located above the connecting frame 9. A connecting rod 6 penetrates the center of the fixed seat 14, and a T-shaped limiting rod 15, which passes through itself and the connecting frame 9, is located inside one side of the fixed seat 14. The limiting rod 15 is fixed to the transmission gear 4. The combined design of the fixed seat 14 and the limiting rod 15 provides stable support for the transmission gear 4, ensuring that the transmission gear 4 will not deviate during rotation, thus guaranteeing the smooth operation of the entire transmission system. The T-shaped structure of the limiting rod 15 further enhances the stability of the system.

[0028] The stirring roller 3 includes spiral curved plates 16 connected to the transmission gear 4. The curved plates 16 are centrally symmetrically distributed with a certain gap. The design of the spiral curved plates 16 causes the wastewater to flow in a spiral direction during the stirring process, enhancing the mixing effect of the wastewater. The gaps between the curved plates 16 allow flocs to pass freely, avoiding floc breakage and improving the settling efficiency of the flocs.

[0029] It is worth noting that the spiral curved plate 16 of this device, driven by the drive device 11, forms a complex water flow dynamic through double reverse rotation, significantly improving flocculation efficiency. Specifically, when the connecting frame 9 is driven by the drive shaft 10 to revolve around the fixed gear 8, the adjusting gear 7 meshes with the fixed gear 8 to generate its own rotation, and drives the drive gear 5 to rotate in the opposite direction through the connecting rod 6, causing the transmission gear 4 to drive the stirring roller 3 to rotate in the opposite direction while revolving around the fixed gear. The spiral curved plate 16 produces the following water flow effect under double rotation:

[0030] Three-dimensional turbulence within the gap between curved plates:

[0031] The revolution causes the curved plate 16 to propel the water flow in a circular motion, while the reverse rotation stretches the water flow axially through the helical curved surface. The water flow within the gaps between the curved plates forms high-intensity turbulence due to bidirectional shear force, accelerating the collision and combination of flocculants and suspended particles.

[0032] Combined vertical and radial loops:

[0033] The rotation of the spiral plate 16 lifts the bottom sewage upwards, forming a vertical vortex to prevent sedimentation; the centrifugal force generated by its revolution spreads the water radially outwards, forming a horizontal circulation. The combination of these two elements creates a three-dimensional circulation, expanding the mixing coverage area.

[0034] Countercurrent shearing enhances flocculation:

[0035] The opposing directions of revolution and rotation result in an increased water velocity gradient between adjacent mixing rollers, creating a high-shear zone that disrupts particle stability and promotes the mutual adsorption and growth of micro-flocs. The spiral structure of the curved plate 16 further guides the water flow to collide, extending the effective contact time.

[0036] In summary, this device achieves rapid dispersion, uniform mixing, and deep flocculation through the composite flow pattern generated by the reverse rotation of the curved plate, significantly shortening the clarification cycle and achieving the goal of high-efficiency operation.

[0037] like Figure 3 and Figure 4 As shown, the device drives the drive shaft 10 to rotate via the drive unit 11, and transmits power to the connecting rod 6 through the connecting frame 9, causing the drive gear 5 to drive the transmission gear 4 and the stirring roller 3 to rotate synchronously. The meshing relationship between the adjusting gear 7 and the fixed gear 8 can adjust the speed and torque of the stirring roller 3. The limiting plate 12 and the blocking plate 13 respectively limit the displacement of the adjusting gear 7 and the drive gear 5. The limiting rod 15 and the fixed seat 14 form a stable fulcrum, ensuring that the transmission gear 4 drives the spiral curved plate 16 to form a highly efficient flocculated water flow. The spiral gap design of the curved plate 16 enhances the sewage mixing efficiency, achieving uniform dispersion and clarification of the flocculant in the sewage.

[0038] In this embodiment, the device drives the drive shaft to rotate the connecting frame via a drive unit. Power is transmitted to the drive gear and transmission gear via a connecting rod, causing the stirring roller to rotate synchronously around the central axis and in the opposite direction. The meshing of the adjusting gear and the fixed gear adjusts the speed and torque of the stirring roller. Limiting plates and blocking plates constrain gear displacement, and the limiting rod and fixed seat provide stable support. The device generates three-dimensional turbulence and a composite circulating flow through the gaps in the spiral curved plates, shortening the wastewater mixing time to 2-5 minutes and compressing the floc settling time to 10-20 minutes. Compared to traditional equipment, this increases efficiency by 30-60%, reduces energy consumption by 20-30%, and extends the maintenance cycle to 6-12 months, achieving rapid dispersion and efficient clarification of flocculants.

[0039] In the above implementation scheme, the wastewater high-efficiency flocculation and clarification mixing device provided by this scheme can be organically combined with existing wastewater mixing technology during implementation. Its installation method is simple: first, the mixing tank 1 is fixed in the designated position of the wastewater treatment tank according to standards, ensuring sealing and stability; then, the gears, mixing rollers 3, and other components are assembled in sequence; finally, the drive device 11 is connected to the power supply and control cabinet, and after normal debugging, it is put into use. In actual operation, the operator first determines the flocculant dosage based on the wastewater volume and quality using existing technical means, and adds the flocculant solution to the wastewater using a metering pump. Then, the drive device 11 is started, and the combined motion of the mixing rollers 3 rapidly and evenly mixes the wastewater and flocculant. After a period of flocculation reaction, the suspended particles in the wastewater form larger flocs and settle. At this time, the bottom outlet valve is opened, and the upper clarified water can flow into the next treatment stage. During the operation of the entire device, existing motor overload protection technology is used to ensure operational safety, and existing monitoring equipment such as level gauges are also equipped to monitor the liquid level in the tank in real time, ensuring efficient and stable operation of the device.

[0040] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the claims.

Claims

1. A stirring device for efficient flocculation and clarification of wastewater, comprising a stirring tank (1), characterized in that: The mixing tank (1) is provided with a rotating structure (2) inside. The rotating structure (2) includes a number of uniformly distributed stirring rollers (3) located inside the mixing tank (1). A drive gear (5) is connected above the stirring rollers (3) through a transmission gear (4). An adjusting gear (7) is connected above the drive gear (5) by a connecting rod (6). A fixed gear (8) is provided between the adjusting gears (7) and is fixedly connected to the mixing tank (1). A connecting frame (9) is provided between the stirring rollers (3) and is penetrated by the connecting rod (6). A drive device (11) is mechanically connected above the connecting frame (9) via a fixed drive shaft (10).

2. The stirring device for high-efficiency flocculation and clarification of wastewater according to claim 1, characterized in that: The transmission gear (4) and drive gear (5) are located below the connecting frame (9), and the adjusting gear (7) is located above the connecting frame (9); the adjusting gear (7) and the fixed gear (8) mesh with each other and are fixedly connected to the connecting rod (6).

3. The stirring device for high-efficiency flocculation and clarification of wastewater according to claim 1, characterized in that: The adjusting gear (7) is connected by a threaded limit plate (12) above itself and the fixed gear (8). The end of the connecting rod (6) away from the adjusting gear (7) is connected by a threaded block plate (13) located below the drive gear (5) and is connected to the drive gear (5) by a thread.

4. The stirring device for high-efficiency flocculation and clarification of wastewater according to claim 1, characterized in that: The connecting frame (9) is provided with a fixed seat (14) located between the adjusting gear (7) and itself. The center of the fixed seat (14) is penetrated by the connecting rod (6). A T-shaped limiting rod (15) penetrating itself and the connecting frame (9) is provided inside one side of the fixed seat (14).

5. The stirring device for high-efficiency flocculation and clarification of wastewater according to claim 4, characterized in that: The limiting rod (15) and the transmission gear (4) are fixedly connected. The stirring roller (3) includes a pair of centrally symmetrically distributed curved plates (16) that are fixedly connected to the transmission gear (4). The curved plates (16) are spiral in shape, and there is a certain gap between the curved plates (16).

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