An unpowered medicament mixing device for sewage treatment

Abstract

This utility model discloses a non-powered chemical mixing device for wastewater treatment, comprising: a delivery pipe, a distributor, and distribution pipes; one end of the delivery pipe is located at the top of the mixing tank, and the other end is located at the output end of the delivery pump; the distributor is located at the top of the mixing tank and connected to the output end of the delivery pipe, and includes a shell and a diversion plate located at the bottom of the shell; multiple distribution pipes are provided, one end of which is connected to the bottom of the distributor, and the other end diffuses outwards to the surrounding area of ​​the mixing tank, including a main pipe and a vertical pipe. The chemical is evenly delivered to different locations in the mixing tank through different distribution pipes, allowing the chemical to mix with the wastewater in the mixing tank. Because the chemical is distributed in the wastewater in a relatively dispersed rather than concentrated manner, the concentration of the chemical in the wastewater at different locations in the mixing tank is ensured to be within a reasonable range, avoiding problems such as insufficient mixing of the chemical and wastewater or foam adsorption and sedimentation, thus improving the efficiency of wastewater treatment.

Description

Technical Field

[0001] The embodiments of this utility model belong to the field of wastewater treatment technology, and more specifically, relate to a non-powered reagent mixing device for wastewater treatment. Background Technology

[0002] In wastewater treatment, thorough mixing of chemicals and wastewater is a crucial step in achieving effective pollutant separation. Mixing is essential because the chemicals must come into full contact with suspended solids and colloidal particles in the wastewater to trigger chemical reactions such as flocculation, sedimentation, and neutralization, forming settleable flocs that ultimately purify the water through solid-liquid separation. Uneven mixing can lead to several problems: First, incomplete reactions, with excessive or insufficient chemicals in some areas, resulting in some pollutants not being effectively captured and causing excessive turbidity in the effluent, such as residual suspended solids due to insufficient flocculation. Second, waste chemicals, with excessive dosage creating ineffective chemical residues and increasing treatment costs; in actual cases, waste due to uneven mixing can reach over 15%. Third, equipment and water quality risks, as undissolved solid chemicals may clog pipes, increasing maintenance burdens.

[0003] Existing technologies primarily achieve initial integration of chemicals and wastewater through mechanical stirring, hydrodynamics, or premixing devices. Mechanical stirring is the most common method, involving the installation of helical blades, cross-shaped agitators, or other devices in mixing tanks or reaction vessels, with forced mixing achieved by motor drive. For example, fast mixing tanks use high-speed mixers to quickly disperse chemicals, while slow mixing tanks maintain floc stability through low-speed stirring. Pipeline injection and premixing are another approach, where chemicals are injected into wastewater pipes via dosing pipes, utilizing the natural mixing effect of turbulent water flow; or a premixing tank is added to first prepare multiple chemicals in the correct proportions before conveying them to the main treatment unit via an impeller.

[0004] Although existing technologies have partially improved mixing efficiency, significant drawbacks remain. Insufficient mixing precision is another major defect. Natural water flow mixing relies on turbulence intensity, and uneven reagent distribution occurs when flow rate fluctuates. Mechanical stirring causes liquid level changes, resulting in waste due to upper-layer foam adsorption of reagents, while bottom sedimentation leads to incomplete reactions. Therefore, a non-powered reagent mixing device for wastewater treatment is needed to ensure thorough mixing of reagents and wastewater, avoiding uneven distribution or foam adsorption and sedimentation. Utility Model Content

[0005] To address the aforementioned deficiencies or improvement needs of existing technologies, this utility model provides a non-powered chemical mixing device for wastewater treatment. The chemical is transported to a distributor via a delivery pipe, where it is further mixed. The mixed chemical is then evenly distributed to different locations within the mixing tank via various distribution pipes, allowing the chemical to mix with the wastewater. Because the chemical is dispersed rather than concentrated in the wastewater, the concentration of the chemical in the wastewater remains within a reasonable range at different locations within the mixing tank during stirring. This avoids problems such as insufficient mixing of the chemical and wastewater, foam adsorption, and sedimentation, thereby improving the efficiency of wastewater treatment.

[0006] To achieve the above objectives, this utility model provides a non-powered chemical mixing device for wastewater treatment, comprising: a delivery pipe, a distributor, and a dispensing pipe;

[0007] One end of the drug delivery pipe is located at the top of the mixing tank, and the other end is located at the output end of the drug delivery pump;

[0008] The dispensing device is located at the top of the mixing tank and connected to the output end of the delivery pipe. It includes a housing and a diversion plate located at the bottom of the housing.

[0009] The dispensing pipes are provided in multiple parts, one end of which is connected to the bottom end of the dispensing device, and the other end spreads outwards to the surrounding area of ​​the mixing tank. The pipes include main pipes and vertical pipes, which evenly disperse the medicine into the mixing tank.

[0010] Furthermore, the interior of the outer shell is a cylindrical cavity with a circular connection port at the center of the top plate and a fixed diversion plate at the bottom. The diversion plate has multiple circular holes along the circumference as diversion holes, and an outer edge is provided on the outside of the diversion holes as a diversion connection port.

[0011] Furthermore, the outer shell is also provided with an annular partition, which is integrally formed with the outer shell and serves as a support structure extending from the outer shell into its internal cylindrical cavity.

[0012] The annular partition is also provided with a rotating cylinder, which is a cylindrical structure with an open top. Its bottom plate is located on the annular partition. The outer diameter of the rotating cylinder is the same as the inner diameter of the outer shell, and it rotates inside the outer shell.

[0013] Furthermore, the bottom plate of the rotating drum divides the cylindrical cavity inside the outer shell into an upper remixing chamber and a lower diversion chamber;

[0014] The bottom plate of the rotating drum has multiple through holes at equal intervals along the circumference, through which the remixing chamber and the diversion chamber are connected.

[0015] Furthermore, the bottom plate of the rotating drum is provided with a rotating shaft at its center. The upper end of the rotating shaft extends out of the outer shell, and a rotating wheel is fixed at the upper end of the rotating shaft. The rotating wheel is an impeller and is located inside the output end of the drug delivery tube.

[0016] Furthermore, the input end of the main pipe is connected to the diversion connection port on the diversion plate, and a reducing pipe is provided at the connection point, that is, the diameter of the main pipe is smaller than the diameter of the diversion connection port, and the pressure of the drug is increased through the reducing pipe.

[0017] Furthermore, the main pipe is a horizontal pipe, and its output end extends to the periphery of the mixing tank;

[0018] The vertical pipe is located at the output end of the main pipe and is connected to the main pipe by an elbow. It is set vertically until it reaches the bottom of the mixing tank.

[0019] The vertical pipe has multiple branch pipes equidistantly spaced along its axial direction.

[0020] Furthermore, the bottom end of the vertical pipe has a vertical liquid outlet, and an end cap is provided at the liquid outlet. The end cap is an inverted conical cap with a flat opening at the tip to connect the two ends of the end cap, and the diameter of the flat opening is smaller than the diameter of the liquid outlet of the vertical pipe.

[0021] Furthermore, the outer edge of the end cap is fixedly connected to the liquid outlet of the vertical pipe.

[0022] In summary, compared with the prior art, the above-described technical solution conceived by this utility model can achieve the following beneficial effects:

[0023] 1. The non-powered chemical mixing device of this utility model delivers the chemical to the distributor through a delivery pipe, where it is further mixed. The mixed chemical is then evenly distributed to different locations in the mixing tank through different distribution pipes, allowing the chemical to mix with the wastewater in the mixing tank. Because the chemical is dispersed rather than concentrated in the wastewater, the concentration of the chemical in the wastewater at different locations in the mixing tank can be kept within a reasonable range during stirring. This avoids problems such as insufficient mixing of the chemical and wastewater or foam adsorption and sedimentation, thereby improving the efficiency of wastewater treatment.

[0024] 2. The non-powered drug mixing device of this utility model drives the rotating drum to rotate when the drug is transported to the output end of the drug delivery pipe, so as to achieve the purpose of mixing the drug again without the need for an additional power source. While achieving the purpose of mixing, it reduces the use of power devices, saves on usage and maintenance costs, saves on site space, and avoids problems that are difficult to solve due to excessive site complexity.

[0025] 3. The non-powered chemical mixing device of this utility model has a vertical pipe with a tapered diameter that is thicker at the top and thinner at the bottom. This enhances the hydraulic pressure of the chemical inside the pipe, ensuring that the output of the chemical is the same at different depths. This solves the problem that the pressure of the chemical decreases as the depth of the vertical pipe increases. Under the combined pressure of these two factors, the output of the chemical is greater in shallower areas and less in deeper areas, resulting in different chemical concentrations at different depths of wastewater.

[0026] 4. In this utility model's non-powered chemical mixing device, after the chemical is output from the outlet of the vertical pipe, a portion moves towards the bottom of the mixing tank from the flat opening at the center of the end cap, while the remaining portion is sprayed upwards under the reaction force of the end cap. This disperses the chemical at the bottom of the tank within a small area, mixing it with the surrounding wastewater. This avoids the situation where the chemical sprayed from the outlet settles at the bottom of the tank, resulting in an excessively high chemical concentration at the bottom. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a non-powered reagent mixing device for sewage treatment according to an embodiment of the present invention;

[0028] Figure 2 This is a cross-sectional view of the structure of a non-powered reagent mixing device for sewage treatment according to an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the internal structure of a non-powered reagent mixing device for sewage treatment according to an embodiment of the present invention;

[0030] Figure 4 This is a cross-sectional view of the dispensing device structure of a non-powered reagent mixing device for sewage treatment according to an embodiment of the present invention;

[0031] Figure 5 This is a schematic diagram of the dispensing device structure of a non-powered reagent mixing device for sewage treatment according to an embodiment of the present invention;

[0032] Figure 6 This is a schematic diagram of the distribution pipe structure of a non-powered reagent mixing device for sewage treatment according to an embodiment of the present invention;

[0033] Figure 7 This is a cross-sectional view of the dispensing pipe structure of a non-powered reagent mixing device for sewage treatment according to an embodiment of the present invention;

[0034] Figure 8 This is a schematic diagram of the end cap structure of a non-powered reagent mixing device for sewage treatment according to an embodiment of the present invention;

[0035] Figure 9 This is a schematic diagram of the stirrer structure of a non-powered reagent mixing device for sewage treatment according to an embodiment of the present invention.

[0036] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1-mixing tank, 2-drug delivery pipe, 3-drug dispenser, 31-outer shell, 32-annular baffle, 33-diverter plate, 34-rotating drum, 35-rotating wheel, 36-remixing chamber, 37-diverter chamber, 4-drug delivery pipe, 41-main pipe, 42-vertical pipe, 43-diverter pipe, 44-end cap. Detailed Implementation

[0037] In the description of this application, 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", "counterclockwise", etc., indicating the orientation or positional relationship are 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 are not intended to 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.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0039] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0041] like Figure 1-9As shown, this utility model embodiment provides a non-powered chemical mixing device for wastewater treatment, including a delivery pipe 2 on a mixing tank 1, a distributor 3 at the output end of the delivery pipe 2, and multiple distribution pipes 4 at the bottom end of the distributor 3. The mixing tank 1 contains wastewater requiring chemical treatment. One end of the delivery pipe 2 is located at the top of the mixing tank 1, and the other end is located at the output end of a chemical pump, which delivers the chemical from a dosing tank to the mixing tank 1. The distributor 3 is located at the top of the mixing tank 1, and the output ends of the distribution pipes 4 are connected to the output ends of the distributor 3, with their output ends located around the bottom of the mixing tank 1. After the agent is delivered to the distributor 3 through the delivery pipe 2, it is further mixed in the distributor 3. The mixed agent is then evenly delivered to different locations in the mixing tank 1 through different distribution pipes 4, so that the agent can be mixed with the sewage in the mixing tank 1. Since the agent is placed in the sewage in a relatively dispersed rather than concentrated manner, the concentration of the agent in the sewage can be kept within a reasonable range at different locations in the mixing tank 1 during stirring. This avoids problems such as insufficient mixing of the agent and sewage or foam adsorption and sedimentation, thereby improving the efficiency of sewage treatment.

[0042] It is understood that the dosing pipe 2 delivers the agent (not shown in the figure) from the dosing tank. The agent is a solid or concentrated liquid, which is stored in the dosing tank for later use after being dissolved or diluted with a solvent. The agent in the dosing tank is a high-concentration agent. When it is needed, it is delivered to the mixing tank 1 through the dosing pump and the dosing pipe 2 to mix with the sewage in the mixing tank 1.

[0043] The dispensing device 3 is located at the top of the mixing tank 1, and includes a housing 31 and a diverter plate 33 located at the bottom of the housing 31. The housing 31 has a cylindrical cavity inside, with a circular connection port at the center of its top plate and a fixed diverter plate 33 at its bottom. The diverter plate 33 has multiple circular holes along its circumference serving as diversion holes, and an outer edge extending downwards from the diversion holes as a diversion connection port. An annular partition 32 is also provided inside the housing 31, integrally formed with the housing 31, and serves as a support structure extending from the housing 31 into its internal cylindrical cavity. A rotating cylinder 34 is also provided on the annular partition 32. The rotating cylinder 34 is an open-top cylindrical structure with its bottom plate located on the annular partition 32. The outer diameter of the rotating cylinder 34 is the same as the inner diameter of the housing 31, and it rotates within the housing 31. The bottom plate of the rotating drum 34 divides the cylindrical cavity inside the outer shell 31 into an upper remixing chamber 36 and a lower diversion chamber 37. The bottom plate of the rotating drum 34 has multiple through holes spaced equidistantly along its circumference, connecting the remixing chamber 36 and the diversion chamber 37. A rotating shaft is also located at the center of the bottom plate of the rotating drum 34, with its upper end extending beyond the outer shell 31. A rotating wheel 35, which is an impeller, is fixed to the upper end of the rotating shaft and is integrally located inside the output end of the drug delivery tube 2.

[0044] Understandably, when the agent is delivered through the dosing pipe 2, it enters through the circular connection port of the outer shell 31. Under pressure, it drives the rotating wheel 35 to rotate, thereby driving the rotating drum 34 to rotate. Simultaneously, the agent enters the remixing chamber 36. The agent in the remixing chamber 36 then enters the distribution chamber 37 through the through-holes on the bottom plate of the rotating drum 34. The rotating drum 34 distributes the agent evenly within the same time interval into the distribution chamber 37, and then it flows out from the distribution chamber 37. Furthermore, as the rotating drum 34 rotates, the pressure position of the agent within it also rotates, meaning the liquid is sprayed out from different through-holes on the bottom plate of the rotating drum 34, further mixing the agent in the distributor 3. This avoids inconsistent concentrations of the agent in the dosing tank or dosing pipe 2 due to sedimentation, which would result in different concentrations of agent distributed from the distributor 3 to different locations in the mixing tank 1. This effectively solves the problem of uneven mixing between the agent and wastewater caused by the agent's own concentration.

[0045] Understandably, when the medicine is transported to the output end of the delivery pipe 2, it drives the rotating drum 34 to rotate, so that the medicine can be mixed again without the need for an additional power source. This achieves the mixing purpose while reducing the use of power devices, saving on usage and maintenance costs, saving on site space, and avoiding overly complex site conditions that may lead to problems that are difficult to solve.

[0046] As a further preferred embodiment, the rotating drum 34 is provided with a bushing, and the outer shell 31 is provided with an annular groove at the corresponding position of the bushing. The bushing cooperates with the annular groove to reduce the friction between the two and allow it to rotate smoothly under the action of the drug flow.

[0047] The distributing pipe 4 includes a main pipe 41 and a vertical pipe 42. The input end of the main pipe 41 is connected to a diversion connection port on the diversion plate 33, and a reducing pipe is provided at the connection point, meaning the diameter of the main pipe 41 is smaller than the diameter of the diversion connection port, increasing the pressure of the agent through this reducing pipe. The main pipe 41 is a horizontal pipe, with its output end extending to the perimeter of the mixing tank 1. The vertical pipe 42 is located at the output end of the main pipe 41, connected to the main pipe 41 via an elbow, and is vertically arranged until it reaches the bottom of the mixing tank 1. Multiple diversion pipes 43 are equidistantly spaced along the axial direction of the vertical pipe 42, through which the agent is discharged into the wastewater at different heights within the mixing tank 1 and mixed with it.

[0048] It is understandable that in the mixing tank 1, the greater the depth, the greater the pressure of the sewage at the outlet of the diversion pipe 43. Since some of the chemical is output from the upper diversion pipe 43 within the vertical pipe 42, the hydraulic pressure of the chemical in the vertical pipe 42 actually decreases with increasing depth. The combined effect of these two pressures inevitably leads to a larger output of the chemical in shallower areas and a smaller output in deeper areas, resulting in different chemical concentrations at different sewage depths. Therefore, in this embodiment, the vertical pipe 42 is tapered at the top and narrower at the bottom to enhance the hydraulic pressure of the chemical at its deeper interior, ensuring the same output of chemical at different depths.

[0049] As a further preferred embodiment, the bottom end of the vertical pipe 42 has a vertical liquid outlet, and an end cap 44 is provided at the liquid outlet. The end cap 44 is an inverted conical cap with a flat opening at the tip to connect the two ends of the end cap 44, and the diameter of the flat opening is smaller than the diameter of the liquid outlet of the vertical pipe 42. The outer edge of the end cap 44 is fixedly connected to the liquid outlet of the vertical pipe 42.

[0050] Understandably, after the agent is output from the outlet of the vertical pipe 42, a portion moves towards the bottom of the mixing tank 1 from the flat opening at the center of the end cap 44, while the remaining portion is sprayed upwards by the reaction force of the end cap 44. This disperses the agent at the bottom of the tank within a small area, mixing it with the surrounding sewage. This prevents the agent at the outlet from settling at the bottom of the tank after being sprayed out, thus avoiding an excessively high concentration of agent at the bottom.

[0051] As a further preferred embodiment, the mixing tank 1 is also equipped with multiple stirring mechanisms (not shown in the figure), which are fixed upside down on the mixing tank 1. The output end is equipped with blades, which are driven by a motor to rotate to stir the sewage, so that the sewage and the agent are more fully mixed.

[0052] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A non-powered reagent mixing device for wastewater treatment, characterized in that, include: The infusion tube (2), the dispensing device (3), and the dispensing tube (4); One end of the drug delivery pipe (2) is located at the top of the mixing tank (1), and the other end is located at the output end of the drug delivery pump; The dispensing device (3) is located at the top of the mixing tank (1) and connected to the output end of the delivery pipe (2). It includes a housing (31) and a diversion plate (33) located at the bottom of the housing (31). The dispensing pipe (4) is provided in multiple parts, one end of which is connected to the bottom end of the dispensing device (3), and the other end spreads to the surrounding area of ​​the mixing tank (1), including the main pipe (41) and the vertical pipe (42), so as to evenly disperse the medicine into the mixing tank (1).

2. The non-powered reagent mixing device for wastewater treatment according to claim 1, characterized in that, The interior of the outer shell (31) is a cylindrical cavity. A circular connection port is opened at the center of the top plate, and a fixed diversion plate (33) is provided at the bottom. Multiple circular holes are opened along the circumference of the diversion plate (33) as diversion holes. On the outside of the diversion holes, an outer edge is provided downward as a diversion connection port.

3. The non-powered reagent mixing device for wastewater treatment according to claim 2, characterized in that, The outer shell (31) is also provided with an annular partition (32), which is integrally formed with the outer shell (31) and serves as a support structure for the outer shell (31) to extend into its internal cylindrical cavity; The annular partition (32) is also provided with a rotating cylinder (34), which is a cylindrical structure with an open top. Its bottom plate is located on the annular partition (32). The outer diameter of the rotating cylinder (34) is the same as the inner diameter of the outer shell (31), and it rotates in the outer shell (31).

4. The non-powered reagent mixing device for wastewater treatment according to claim 3, characterized in that, The bottom plate of the rotating drum (34) divides the cylindrical cavity inside the outer shell (31) into an upper remixing chamber (36) and a lower diversion chamber (37); The bottom plate of the rotating drum (34) has multiple through holes at equal intervals along the circumference, through which the remixing chamber (36) and the diversion chamber (37) are connected.

5. A non-powered reagent mixing device for wastewater treatment according to claim 4, characterized in that, The bottom plate of the rotating drum (34) is also provided with a rotating shaft at the center. The upper end of the rotating shaft extends out of the outer shell (31). A rotating wheel (35) is fixed at the upper end of the rotating shaft. The rotating wheel (35) is an impeller and is located inside the output end of the drug delivery tube (2).

6. A non-powered reagent mixing device for wastewater treatment according to any one of claims 1-5, characterized in that, The input end of the main pipe (41) is connected to the diversion connection port on the diversion plate (33), and a variable diameter pipe is provided at the connection point, that is, the diameter of the main pipe (41) is smaller than the diameter of the diversion connection port, and the pressure of the drug is increased through the variable diameter pipe.

7. A non-powered reagent mixing device for wastewater treatment according to claim 6, characterized in that, The main pipe (41) is a horizontal pipe, and its output end extends to the periphery of the mixing tank (1); The vertical pipe (42) is located at the output end of the main pipe (41) and is connected to the main pipe (41) by an elbow. It is set vertically until it reaches the bottom of the mixing tank (1). The vertical pipe (42) has multiple branch pipes (43) equidistantly spaced along its axial direction.

8. A non-powered reagent mixing device for wastewater treatment according to claim 7, characterized in that, The bottom end of the vertical pipe (42) has a vertical liquid outlet, and an end cap (44) is provided at the liquid outlet. The end cap (44) is an inverted conical cap with a flat opening at the tip to connect the two ends of the end cap (44). The diameter of the flat opening is smaller than the diameter of the liquid outlet of the vertical pipe (42).

9. A non-powered reagent mixing device for wastewater treatment according to claim 8, characterized in that, The outer edge of the end cap (44) is fixedly connected to the liquid outlet of the vertical pipe (42).

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