Organic matter purifying agent raw material pretreatment device

Abstract

The utility model discloses an organic matter purifying agent raw material pretreatment device, and the device includes the stirring tank with the cone bottom and is arranged in the agitator of stirring tank, wherein, the agitator includes stirring shaft and sets up the intermediate stirring structure, the outer periphery stirring structure and the bottom stirring structure on stirring shaft, the outer periphery stirring structure includes the extension arm fixed in stirring shaft both sides, the extension arm end is provided with the stirring column and is provided with the stirring arc plate between stirring column, the stirring arc plate shape is semicircular arc plate, and one end is fixed in the upper end of one stirring column, and the other end is fixed in the lower end of another stirring column. The device is through multilayer stirring and optimization feeding design, improves the utilization of medicine, reduces the operating cost, prevents the equipment from blocking, is applicable to industrial wastewater and domestic sewage treatment, and significantly improves the mixing uniformity and process efficiency.

Description

Technical Field

[0001] This utility model relates to a pretreatment device for organic purifying agent raw materials, belonging to the field of wastewater treatment equipment. Background Technology

[0002] With the continuous advancement of industrialization, the discharge of various industrial wastewaters and urban sewage continues to increase, and the content of organic pollutants in water bodies is rising daily. In order to effectively remove pollutants such as suspended particles, organic matter, color, and some heavy metal ions from sewage, various types of purification agents are often added during sewage treatment for coagulation, sedimentation, and advanced treatment.

[0003] Currently, commonly used organic pollutants mainly include inorganic polymeric flocculants such as polyaluminum chloride (PAC) and polyferric sulfate (PFS), as well as organic polymeric flocculants such as polyacrylamide (PAM). In practical engineering applications, to improve treatment efficiency, it is often necessary to add multiple pollutants in combination. The synergistic effect of different pollutants enhances flocculation, shortens reaction time, and reduces the total dosage. However, the current market often uses multiple dosing devices to add pollutants separately. Each reagent flows independently into the reaction tank during transport, resulting in poor on-site mixing uniformity and easily causing problems such as low reagent utilization, incomplete reaction, and large fluctuations in dosage ratios.

[0004] In addition, due to the high viscosity, easy agglomeration, and shear sensitivity of polymeric flocculants such as PAM, improper handling can easily lead to risks such as equipment blockage, reagent degradation, and dosage failure.

[0005] Therefore, there is a need for a multi-component pretreatment device that can efficiently premix various purifying agent stock solutions, so as to achieve online dynamic uniform mixing of various organic purifying agents, improve the effectiveness of the agents, reduce operating costs, and enhance the overall efficiency of the wastewater treatment process. Utility Model Content

[0006] The purpose of this invention is to provide a pretreatment device for organic purifier raw materials, which can effectively solve the above-mentioned problems.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: The apparatus includes a mixing tank with a conical bottom and a stirrer disposed within the mixing tank; wherein the stirrer includes a stirring shaft and an intermediate stirring structure, an outer peripheral stirring structure, and a bottom stirring structure disposed on the stirring shaft, the outer peripheral stirring structure including extension arms fixed on both sides of the stirring shaft, the ends of the extension arms being provided with stirring columns and stirring arc plates disposed between the stirring columns; the stirring arc plates are semi-circular arc plates, one end being fixed to the upper end of one of the stirring columns and the other end being fixed to the lower end of the other stirring column.

[0008] Furthermore, the stirring arc plate is provided with several through holes.

[0009] Furthermore, the mixing tank has three feeding holes on its body, and feeding pipes are installed on the feeding holes. The axis of the feeding pipes is tangent to the body of the mixing tank.

[0010] Furthermore, the feed holes are at different horizontal heights, and the vertical distance between two adjacent feed holes is the same.

[0011] Furthermore: the intermediate stirring structure includes multiple mounting sleeves vertically mounted on the stirring shaft, with connecting rods symmetrically arranged on both sides of the mounting sleeves, and stirring blades fixed on the connecting rods, the stirring blades being bent in the middle to form a certain arc.

[0012] Furthermore, the axes of the connecting rods that are adjacent in the vertical position are perpendicular.

[0013] Furthermore, the bottom stirring structure includes two stirring rods inclined towards the middle, with the upper end of the stirring rods fixedly connected to the lower end of the stirring column.

[0014] Furthermore, the other ends of the two stirring rods are connected and bent, and a rotating plate is provided at the connection of the stirring rods.

[0015] Furthermore: a reducer is connected to the upper end of the stirring shaft via a coupling, and a motor is connected to the input end of the reducer.

[0016] The beneficial effects are: 1. Highly Efficient and Uniform Mixing: The device utilizes a multi-layered mixing structure, including a central mixing structure, an outer peripheral mixing structure, and a bottom mixing structure, to achieve a three-dimensional, multi-dimensional mixing effect. The arc-shaped stirring blades of the central mixing structure enhance the shear force in the central region, the stirring arc plates and through holes of the outer peripheral mixing structure promote liquid turbulence, and the stirring rods and rotating plates of the bottom mixing structure prevent material deposition at the bottom of the cone, ensuring that purifying agents of different viscosities and densities are fully and uniformly mixed within the mixing tank.

[0017] 2. Optimized reagent utilization: The through holes on the stirring arc plate effectively increase liquid flowability and turbulence intensity, reducing the risk of agglomeration of high-viscosity reagents (such as PAM) and improving reagent dispersibility and reaction efficiency. Compared with the traditional method of adding reagents separately using multiple dosing devices, this device significantly reduces reagent waste and the total amount added, thereby reducing operating costs.

[0018] 3. Improved feeding design: The mixing tank is equipped with three feeding holes and a tangential feeding pipe. The tangential feeding creates an initial vortex, promoting the preliminary mixing of the drug concentrate. The different heights of the feeding holes (with equal vertical distance between adjacent feeding holes) optimize the addition sequence and spatial distribution of different drugs, avoiding excessively high local concentrations and improving mixing uniformity.

[0019] 4. Preventing sedimentation and clogging: The inclined stirring rod and rotating plate of the bottom stirring structure are designed for the material characteristics of the cone bottom area, effectively agitating high-density or high-viscosity agents, preventing materials from settling at the bottom of the mixing tank, reducing the risk of equipment clogging, and reducing maintenance frequency. Attached Figure Description

[0020] For ease of explanation, this utility model is described in detail below with reference to the specific embodiments and accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a top view of the present invention; Figure 3 This is the front view of the present invention; Figure 4 This is a drawing of the stirrer parts of this utility model; Figure 5 for Figure 4 Enlarged view of a portion of the image; Figure 6 This is a right view of the stirrer of this utility model.

[0022] Explanation of reference numerals in the attached figures: 1. Mixing tank; 2. Agitator; 3. Agitator shaft; 4. Intermediate mixing structure; 401. Mounting sleeve; 402. Connecting rod; 403. Agitator blade; 5. Outer peripheral mixing structure; 501. Extension arm; 502. Agitator column; 503. Agitator arc plate; 504. Through hole; 6. Bottom mixing structure; 601. Agitator rod; 602. Rotating plate; 7. Reducer; 8. Electric motor. Detailed Implementation

[0023] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0024] It should be noted that, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model.

[0025] Furthermore, the terms “first,” “second,” “third,” etc., are used for descriptive purposes only and should not be interpreted as indicating or implying relative importance.

[0026] Furthermore, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] See Figure 1-6 This invention relates to an organic purifying agent raw material pretreatment device, used for the online dynamic uniform mixing of various organic purifying agents (polyaluminum chloride PAC, polyferric sulfate PFS, and polyacrylamide PAM) during wastewater treatment. The device includes a mixing tank 1 with a conical bottom and a stirrer 2 disposed within the mixing tank 1. The conical bottom design of the mixing tank 1 facilitates the centralized collection and discharge of the mixed agents, making it particularly suitable for treating high-viscosity or easily deposited agent concentrates. The tank body of the mixing tank 1 can be made of stainless steel or lined with a corrosion-resistant coating to accommodate purifying agents with different chemical properties.

[0028] like Figure 4 As shown, the stirrer structure includes a stirring shaft 3 and an intermediate stirring structure 4, an outer peripheral stirring structure 5, and a bottom stirring structure 6 fixed on the stirring shaft 3. The stirring shaft 3 is the core transmission component of the device, passing through the center of the mixing tank 1, and is powered by a drive mechanism at the top. The multi-layered stirring structures on the stirring shaft 3 work together to create a three-dimensional, multi-dimensional mixing effect, ensuring that the purifying agent stock solutions of different viscosities and densities can be fully mixed.

[0029] 1. Peripheral stirring structure 5; such as Figure 4 , Figure 5As shown, the outer peripheral stirring structure 5 includes extension arms 501 fixed on both sides of the stirring shaft 3. The extension arms 501 extend horizontally outward from the stirring shaft 3 to increase the stirring range. Each extension arm 501 has a vertically arranged stirring column 502 fixed to its end, and stirring arc plates 503 are connected between the stirring columns 502. The stirring arc plate 503 is designed as a semi-circular arc plate, with one end fixed to the upper end of one stirring column 502 and the other end fixed to the lower end of the other stirring column 502, forming an inclined arc-shaped stirring path. This design allows the stirring arc plate 503 to push the liquid along the inner wall of the tank to form a vortex when rotating, enhancing the mixing effect.

[0030] The stirring arc plate 503 is provided with several through holes 504. The through holes 504 allow liquid to pass through the arc plate during stirring, increasing the turbulence intensity and reducing the agglomeration or adhesion of high-viscosity agents (such as PAM) during stirring. The distribution of the through holes 504 can be optimized according to the actual agent characteristics, for example, by using a uniform distribution or staggered arrangement to further improve the uniformity of liquid flow.

[0031] 2. Intermediate stirring structure 4; such as Figure 4 As shown, the intermediate stirring structure 4 includes multiple mounting sleeves 401 vertically mounted on the stirring shaft 3. The mounting sleeves 401 are fixed to the stirring shaft 3 by bolts or welding to ensure structural stability. Each mounting sleeve 401 has a connecting rod 402 symmetrically arranged on both sides. The connecting rod 402 extends outward and is fixed with a stirring blade 403. The stirring blade 403 is an arc-shaped blade with a bend in the middle. The bending angle can be adjusted according to the viscosity of the agent. It is usually in a smooth arc to increase the contact area with the liquid and improve shear force and mixing efficiency.

[0032] The axes of adjacent connecting rods 402 are designed to be perpendicular to each other, meaning that the connecting rods 402 of adjacent mounting sleeves 401 form a 90° angle in space. This vertical layout effectively avoids dead corners during mixing, ensuring that the material in the middle area of ​​the mixing tank 1 can be fully disturbed, making it suitable for mixing purifying agents of different densities (such as the mixing of PAC and PAM).

[0033] 3. Bottom stirring structure 6; such as Figure 5 As shown, the bottom stirring structure 6 is located at the lower end of the stirring shaft 3 and is specifically designed for material mixing in the cone-shaped bottom region. The bottom stirring structure 6 includes two stirring rods 601 that slope inwards. The upper end of each stirring rod 601 is fixedly connected to the lower end of the stirring column 502 of the outer peripheral stirring structure 5, forming structural continuity. The inclined design of the stirring rods 601 allows them to effectively disturb the material along the inclined surface of the cone bottom when rotating, preventing high-density or high-viscosity agents from depositing at the cone bottom.

[0034] The other ends of the two stirring rods 601 are connected and bent, with a rotating plate 602 fixed at the connection. The rotating plate 602 is a flat or slightly curved plate structure, and its function is to further push the material in the cone bottom area upward when the stirring rods 601 rotate, enhancing the circulation effect of the liquid at the bottom. The design of the rotating plate 602 also prevents the accumulation of material at the bottom of the mixing tank 1, ensuring the uniformity of the mixed agent.

[0035] The feeding system includes three feeding holes on the tank body of the mixing tank 1, each connected to a feeding pipe. The axis of the feeding pipe is tangential to the outer wall of the mixing tank 1, forming a tangential feeding method. Tangential feeding causes the incoming drug concentrate to form a swirling flow along the inner wall of the tank, which helps with initial mixing and reduces the phenomenon of excessively high local concentrations of the drug when entering the mixing tank 1. The three feeding holes are at different horizontal heights, and the vertical distance between adjacent feeding holes is designed to be equal. This tiered feeding layout allows different types of purifying agents (such as PAC, PFS, and PAM) to enter the mixing tank 1 at different heights, optimizing the mixing sequence. For example, high-viscosity PAM can enter through the lower feeding hole to avoid premature agglomeration in the upper part of the tank, while low-viscosity PAC or PFS can enter through the higher feeding hole to promote stepwise mixing.

[0036] The feed pipe can be equipped with a flow control valve or a metering pump (not shown in the figure) to precisely control the dosage and dosing rate of each agent, ensure the stability of the dosing ratio, and meet the needs of different wastewater treatment processes.

[0037] Drive system, such as Figure 1 As shown, a reducer 7 is connected to the upper end of the stirring shaft 3 via a coupling, and a motor 8 is connected to the input end of the reducer 7. The motor 8 provides rotational power, and the reducer 7 is used to adjust the rotational speed of the stirring shaft 3, typically adjustable within the range of 0-200 rpm to meet the mixing requirements of different reagents. The reducer 7 employs a high-precision gear reduction mechanism to ensure smooth stirring and low-noise operation. The coupling is designed for easy disassembly and maintenance while ensuring reliable power transmission.

[0038] Workflow: In wastewater treatment applications, operators first inject PAC, PFS, PAM, and other purification agent stock solutions into the mixing tank 1 at predetermined ratios via the feed pipe, according to process requirements. The tangential feeding design causes the agents to swirl along the inner wall of the tank, resulting in initial mixing. After the motor 8 starts, it drives the stirring shaft 3 to rotate via the reducer 7, causing the intermediate stirring structure 4, the outer peripheral stirring structure 5, and the bottom stirring structure 6 to work together. The arc-shaped stirring blades 403 of the intermediate stirring structure 4 perform strong shearing and mixing of the agent in the middle area of ​​the tank, ensuring uniform dispersion of agents of different densities.

[0039] The stirring arc plate 503 and through hole 504 of the outer peripheral stirring structure 5 drive the liquid to form a vortex, enhance the turbulence effect, and reduce the risk of agglomeration of high-viscosity agents.

[0040] The stirring rod 601 and rotating plate 602 of the bottom stirring structure 6 agitate the material in the cone bottom area to prevent sedimentation and ensure the uniformity of the agent throughout the tank.

[0041] After mixing, the compounded reagent is discharged through the discharge port at the bottom of the mixing tank 1 and enters the subsequent wastewater treatment process (such as a coagulation sedimentation tank). The entire process is automated through a control system, including precise control of reagent dosage, stirring speed, and time.

[0042] Example 2 Compared to Example 1, this example adds a corrosion-resistant coating (such as polytetrafluoroethylene or epoxy resin coating) to the inner wall of the mixing tank 1 to accommodate the mixing requirements of acidic or alkaline purifying agents and extend the service life of the equipment. Furthermore, the rotational speed of the stirring shaft 3 can be further optimized according to the characteristics of the reagent. For example, for high-viscosity PAM stock solution, the rotational speed can be reduced to 50-100 rpm to reduce shear degradation; for low-viscosity PAC or PFS stock solution, the rotational speed can be increased to 150-200 rpm to enhance mixing efficiency.

[0043] To further improve mixing uniformity, an online flow meter and automatic valve can be installed on the feed pipe, and the reagent dosage can be dynamically adjusted through a PLC control system. In addition, an observation window or sampling port can be installed on the top of the mixing tank 1 to facilitate real-time monitoring of the mixing effect by operators.

[0044] Example 3 This embodiment addresses the needs of large-scale wastewater treatment plants by adding auxiliary functions to the mixing tank 1. The mixing tank 1 can be equipped with an external insulation jacket to maintain the fluidity of the reagents in low-temperature environments, making it particularly suitable for operation in cold regions or during winter. The stirring shaft 3 of the agitator 2 can be modularly designed, allowing for the replacement of different numbers of intermediate stirring structures 4 or peripheral stirring structures 5 depending on the tank volume or reagent type, to adapt to different treatment scales. Furthermore, the rotating plate 602 of the bottom stirring structure 6 can be designed with an adjustable angle, optimizing the mixing effect in the cone-shaped bottom area by adjusting the tilt angle of the rotating plate 602.

[0045] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An organic purifier raw material pretreatment device, characterized in that: The apparatus includes a mixing tank (1) with a conical bottom and a stirrer (2) disposed within the mixing tank (1); wherein the stirrer (2) includes a stirring shaft (3) and an intermediate stirring structure (4), an outer peripheral stirring structure (5) and a bottom stirring structure (6) disposed on the stirring shaft (3), the outer peripheral stirring structure (5) includes an extension arm (501) fixed on both sides of the stirring shaft (3), the end of the extension arm (501) is provided with a stirring column (502) and a stirring arc plate (503) disposed between the stirring columns (502); the stirring arc plate (503) is in the shape of a semi-circular arc plate, one end is fixed to the upper end of one of the stirring columns (502) and the other end is fixed to the lower end of the other stirring column (502); The stirring arc plate (503) is provided with several through holes (504); The mixing tank (1) has three feeding holes on its body, and feeding pipes are provided on the feeding holes. The axis of the feeding pipes is tangent to the body of the mixing tank (1). The feed holes are at different horizontal heights, and the vertical distance between two adjacent feed holes is the same.

2. The organic matter purification agent raw material pretreatment device according to claim 1, characterized in that: The intermediate stirring structure (4) includes multiple mounting sleeves (401) vertically mounted on the stirring shaft (3). Connecting rods (402) are symmetrically arranged on both sides of the mounting sleeves (401). Stirring blades (403) are fixed on the connecting rods (402). The stirring blades (403) are bent in the middle to form a certain arc.

3. The organic matter purification agent raw material pretreatment device according to claim 2, characterized in that: The axes of the connecting rods (402) that are adjacent in the vertical position are perpendicular.

4. The organic matter purification agent raw material pretreatment device according to claim 3, characterized in that: The bottom stirring structure (6) includes two stirring rods (601) that are inclined towards the middle, and the upper end of the stirring rods (601) is fixedly connected to the lower end of the stirring column (502).

5. The organic matter purification agent raw material pretreatment device according to claim 4, characterized in that: The other ends of the two stirring rods (601) are connected and bent, and a rotating plate (602) is provided at the connection of the stirring rods (601).

6. The organic matter purification agent raw material pretreatment device according to claim 5, characterized in that: The upper end of the stirring shaft (3) is connected to a reducer (7) via a coupling, and the input end of the reducer (7) is connected to a motor (8).

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