A pipe mixer for water treatment chemical mixing

Abstract

The utility model discloses a pipeline mixer for water treatment agent mixing, including with the outside pipeline intercommunication's mixing chamber, be located in the dosing pipe and stirring subassembly of mixing chamber, the dosing pipe's medicine outlet is located in the stirring subassembly, the stirring subassembly includes the rotor blade for driving fluid rotation to make the medicine outlet place agent preliminary dispersion mixing, and the stator guide plate for shunting rotating fluid to make agent further dispersion mixing is surrounded in the rotor blade periphery. The utility model discloses through the medicine outlet of dosing pipe is located in the stirring subassembly, makes agent to be scattered and realizes preliminary mixing in the flow field center of high -speed rotation, again after the secondary shunting of peripheral stator guide plate and shearing, forms the fine dispersion path from inside to outside, reduces the mixing time while promoting agent mixing evenness and reaction efficiency, significantly reduces the agent waste caused by uneven mixing, improves the pollutant removal rate.

Description

Technical Field

[0001] This utility model belongs to the field of fluid mixing technology, and in particular relates to a pipeline mixer. Background Technology

[0002] In wastewater treatment systems, the addition and mixing of chemicals are among the key factors determining the effectiveness of water treatment. The dissolution efficiency and mixing uniformity of water treatment chemicals directly affect the removal rate of pollutants, the stability of system operation, and treatment costs.

[0003] Currently, water treatment chemicals are mainly mixed using two technologies: centralized dosing in large dosing tanks and dynamic mixing using pipeline mixers. While large dosing tanks, by creating independent spaces for chemical dissolution and diffusion, can achieve basic mixing functions, they require a large area, incur high civil engineering costs, and are difficult to adjust the mixing intensity flexibly during flow fluctuations, resulting in wasted land resources and insufficient operational economics. In contrast, pipeline mixers, through optimized fluid dynamics design, integrate the mixing process within the delivery pipeline, significantly reducing the equipment's space requirements and allowing for flow rate adjustment to adapt to different operating conditions.

[0004] However, existing pipeline mixers often add chemicals directly at the mixer inlet and use simple impellers for stirring, which makes it easy for the chemical particles to dissolve incompletely, resulting in poor mixing effect. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the deficiencies and defects mentioned in the background art above, and to provide a pipeline mixer for mixing water treatment agents with simple structure and good mixing effect.

[0006] To solve the above-mentioned technical problems, the technical solution proposed by this utility model is as follows: A pipeline mixer for mixing water treatment agents includes a mixing chamber connected to an external pipeline, a dosing pipe disposed in the mixing chamber, and a stirring assembly. The outlet of the dosing pipe is disposed in the stirring assembly. The stirring assembly includes rotor blades for driving fluid to rotate so that the agent at the outlet is initially dispersed and mixed, and a stator guide plate surrounding the rotor blades for diverting the rotating fluid so that the agent is further dispersed and mixed.

[0007] Preferably, in the above-mentioned pipeline mixer, the stirring assembly further includes a stirring motor located outside the mixing chamber, a rotating shaft connected at one end to the stirring motor and extending into the mixing chamber, and a fixed sleeve fitted around the rotating shaft and fixed in place. The fixed sleeve has a cover plate with circulation holes at one end facing away from the stirring motor. The rotor blades are mounted on the other end of the rotating shaft, the stator guide plate is fixed to the underside of the cover plate, and the drug outlet passes through the cover plate. In this configuration, the stirring motor acts as a power source, causing the rotor blades to rotate at high speed via the rotating shaft. The fluid, accelerated by the rotor blades, impacts the stationary stator guide plate, further dispersing and mixing. Through the circulation holes on the cover plate, the fluid can be drawn back into the rotor blade area, forming an internal circulating flow. Furthermore, the drug outlet of the dosing pipe passes through the cover plate, allowing the agent to be instantly injected into the rotor blade area, ensuring the uniformity and full reaction of the final mixing effect.

[0008] In the aforementioned pipe mixer, preferably, a support member is provided between the fixed sleeve and the rotating shaft to prevent the rotating shaft from wobbling. Providing a support member effectively limits the radial runout that may occur when the rotating shaft rotates at high speed, ensuring that the rotating shaft remains in the center position within the fixed sleeve.

[0009] In the aforementioned pipe mixer, preferably, the stirring motor is a speed-regulating motor with adjustable stirring speed. The speed-regulating motor can be linked with sensors for adjustment, regulating the stirring speed and time according to production needs, avoiding unnecessary energy consumption, and improving equipment operating efficiency and energy-saving effects.

[0010] In the aforementioned pipeline mixer, preferably, the mixing chamber is equipped with a flow guide baffle that divides it into a first region and a second region. The flow guide baffle forces the fluid to circumvent the flow, significantly increasing the effective flow distance and residence time of the fluid within the region, thus providing the necessary time for thorough mixing of the reagents.

[0011] Preferably, in the aforementioned pipeline mixer, both the first and second regions are equipped with the dosing pipe and the stirring assembly. This arrangement enables the first and second regions to form a primary reaction zone and a secondary reaction zone, respectively. Different types or dosages of primary and secondary reagents can be added to the two regions. Furthermore, the dosage of the primary and secondary reagents, as well as the rotation speed of the stirring assemblies in the two regions, can be independently adjusted according to changes in the influent water quality and target pollutants, thereby achieving precise treatment of complex water qualities.

[0012] In the aforementioned pipeline mixer, preferably, the flow guide baffle is arranged perpendicular to the fluid delivery direction, with a flow port at one end for fluid passage, and the stirring positions of the stirring components are all located on the side away from the flow port. By setting the flow port of the flow guide baffle and the stirring positions of the stirring components at opposite ends of the chamber, the fluid is forced to be mixed in the stirring zone, pass through the flow guide baffle, and move along its surface to the flow port before entering the next zone. This maximizes the actual residence time of the fluid in the stirring zone, ensuring that the fluid is fully mixed in the previous stage before entering the next stage through the flow port.

[0013] In the aforementioned pipe mixer, preferably, the flow guide baffle has a trapezoidal cross-section, with the narrower end of the trapezoidal cross-section closer to the flow port. The inclined surface of the trapezoidal structure provides a gentle turning path for the fluid. When the fluid flows from the first region to the second region, it is naturally guided to the flow port along the inclined surface, enhancing the stability of the flow guide baffle.

[0014] In the aforementioned pipeline mixer, preferably, both the first and second regions are equipped with sensor groups for monitoring the pH value, pressure, flow rate, and concentration of the fluid. These sensor groups can accurately determine the reaction state and effect of each mixing stage, thereby enabling precise and independent adjustment of the dosage in the dosing pipes of each region and the rotation speed of each stirring component, ensuring optimal mixing efficiency.

[0015] In the aforementioned pipe mixer, preferably, both ends of the mixing chamber are connected to external pipes via flanges. Flange connections facilitate installation and maintenance.

[0016] Compared with the prior art, the advantages of this utility model are: By placing the outlet of the dosing pipe inside the stirring assembly, the agent is instantly dispersed and initially mixed in the center of the high-speed rotating flow field. Then, through secondary diversion and shearing by the outer stator guide plate, a fine dispersion path is formed from the inside to the outside. This improves the uniformity of agent mixing and reaction efficiency, while reducing mixing time, significantly reducing agent waste caused by uneven mixing, and improving the pollutant removal rate. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of a pipeline mixer for mixing water treatment agents, as shown in the embodiment. Figure 2 This is a partial structural schematic diagram of the stirring assembly in the embodiment; Figure 3 for Figure 2 A cross-sectional view at point AA.

[0019] Legend 1. Mixing chamber; 11. First zone; 12. Second zone; 13. Flow port; 2. Dosing pipe; 21. Discharge port; 3. Stirring assembly; 31. Rotor blades; 32. Stator guide plate; 33. Stirring motor; 34. Rotating shaft; 35. Fixing sleeve; 36. Cover plate; 361. Circulation hole; 37. Support component; 4. Flow guide baffle; 5. Sensor group. Detailed Implementation

[0020] To facilitate understanding of this utility model, it will be described more comprehensively and in detail below with reference to the accompanying drawings and preferred embodiments. However, the scope of protection of this utility model is not limited to the following specific embodiments.

[0021] It should be noted that when a component is described as being "fixed to, attached to, connected to or connected to" another component, it can be directly fixed to, attached to, connected to or connected to the other component, or it can be indirectly fixed to, attached to, connected to or connected to the other component through other intermediate connectors.

[0022] Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by those skilled in the art. The technical terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the scope of protection of this invention.

[0023] Unless otherwise specified, all raw materials, reagents, instruments and equipment used in this invention can be purchased from the market or prepared by existing methods.

[0024] Example: like Figures 1 to 3 As shown, the pipeline mixer for mixing water treatment agents in this embodiment includes a mixing chamber 1 connected to an external pipeline, a dosing pipe 2 disposed in the mixing chamber 1, and a stirring assembly 3. The outlet 21 of the dosing pipe 2 is disposed in the stirring assembly 3. The stirring assembly 3 includes a rotor blade 31 for driving the fluid to rotate so that the agent at the outlet 21 is initially dispersed and mixed, and a stator guide plate 32 surrounding the rotor blade 31 for diverting the rotating fluid so that the agent is further dispersed and mixed.

[0025] In this embodiment, the stirring assembly 3 also includes a stirring motor 33 located outside the mixing chamber 1, a rotating shaft 34 connected to the stirring motor 33 at one end and extending into the mixing chamber 1, and a fixing sleeve 35 fixed outside the rotating shaft 34. The fixing sleeve 35 is provided with a cover plate 36 with a circulation hole 361 at one end away from the stirring motor 33. The rotor blades 31 are installed at the other end of the rotating shaft 34. The stator guide plate 32 is fixed on the lower side of the cover plate 36. The medicine outlet 21 passes through the cover plate 36.

[0026] In this embodiment, a support member 37 is provided between the fixed sleeve 35 and the rotating shaft 34 to prevent the rotating shaft 34 from shaking.

[0027] In this embodiment, the stirring motor 33 is a speed-regulating motor with adjustable stirring speed.

[0028] In this embodiment, the number of plates in the stator guide plate 32 is greater than the number of blades in the rotor blade 31, which enables the stator guide plate 32 to provide better dispersion and more uniform mixing quality.

[0029] In this embodiment, a flow guide baffle 4 is provided in the mixing chamber 1 to divide it into a first region 11 and a second region 12.

[0030] In this embodiment, both the first region 11 and the second region 12 are provided with a dosing pipe 2 and a stirring assembly 3.

[0031] In this embodiment, the flow guide baffle 4 is arranged perpendicular to the fluid conveying direction, and one end of it is provided with a flow port 13 for fluid to pass through. The stirring position of the stirring assembly 3 is located on the side away from the flow port 13.

[0032] In this embodiment, the cross-section of the flow guide baffle 4 is trapezoidal, with the narrower end of the trapezoidal cross-section closer to the flow port 13.

[0033] In this embodiment, both the first region 11 and the second region 12 are equipped with sensor groups 5 for monitoring the pH value, pressure, flow rate, and concentration of the fluid. Specifically, the sensor groups 5 are located downstream of the corresponding stirring device to more accurately detect the mixing effect in each region. When poor mixing effect is detected, the stirring speed of the stirring component 3 can be increased by the controller to enhance the mixing effect.

[0034] In this embodiment, the two ends of the mixing chamber 1 are connected to external pipes via flanges.

[0035] In this embodiment, the inner wall of the mixing chamber 1 is provided with a wear-resistant coating, which can be a ceramic coating or a composite material, to extend the service life of the mixing chamber 1.

[0036] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A pipeline mixer for mixing water treatment agents, comprising a mixing chamber (1) connected to an external pipeline, a dosing pipe (2) disposed within the mixing chamber (1), and a stirring assembly (3), characterized in that, The outlet (21) of the dosing tube (2) is located inside the stirring assembly (3). The stirring assembly (3) includes a rotor blade (31) for driving the fluid to rotate so that the agent at the outlet (21) is initially dispersed and mixed, and a stator guide plate (32) surrounding the rotor blade (31) for diverting the rotating fluid so that the agent is further dispersed and mixed.

2. The pipe mixer according to claim 1, characterized in that, The stirring assembly (3) further includes a stirring motor (33) located outside the mixing chamber (1), a rotating shaft (34) connected to the stirring motor (33) and extending into the mixing chamber (1) at one end, and a fixed sleeve (35) fixed outside the rotating shaft (34). The fixed sleeve (35) has a cover plate (36) with a circulation hole (361) at one end away from the stirring motor (33). The rotor blades (31) are installed at the other end of the rotating shaft (34). The stator guide plate (32) is fixed on the lower side of the cover plate (36). The medicine outlet (21) passes through the cover plate (36).

3. The pipe mixer according to claim 2, characterized in that, A support member (37) is provided between the fixed sleeve (35) and the rotating shaft (34) to prevent the rotating shaft (34) from shaking.

4. The pipe mixer according to claim 2, characterized in that, The stirring motor (33) is a speed-regulating motor with adjustable stirring speed.

5. The pipe mixer according to any one of claims 1-4, characterized in that, The mixing chamber (1) is provided with a flow guide baffle (4) that divides it into a first region (11) and a second region (12).

6. The pipe mixer according to claim 5, characterized in that, Both the first region (11) and the second region (12) are equipped with the dosing pipe (2) and the stirring assembly (3).

7. The pipe mixer according to claim 6, characterized in that, The flow guide baffle (4) is arranged perpendicular to the fluid transport direction, and one end of it is provided with a flow port (13) for fluid to pass through. The stirring position of the stirring assembly (3) is located on the side away from the flow port (13).

8. The pipe mixer according to claim 7, characterized in that, The cross-section of the flow guide baffle (4) is trapezoidal, with the narrower end of the trapezoidal cross-section close to the flow port (13).

9. The pipe mixer according to claim 5, characterized in that, Both the first region (11) and the second region (12) are equipped with sensor groups (5) for monitoring the pH value, pressure, flow rate and concentration of the fluid.

10. The pipe mixer according to claim 1, characterized in that, The two ends of the mixing chamber (1) are connected to external pipes via flanges.

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