A reagent dosing device for tap water treatment

Abstract

This utility model relates to a chemical dosing device for tap water treatment, comprising an inlet pipe, a pipeline mixer, and a filter connected in sequence. The pipeline mixer includes a mixing pipe, a first mixing element arranged along the central axis of the mixing pipe, and a second mixing element disposed on the inner side wall of the mixing pipe. The first mixing element includes multiple forward spiral blades and reverse spiral blades, which are arranged alternately along the axial direction of the mixing pipe and rotate in opposite directions. The second mixing element has multiple guide grooves on the side facing the first mixing element. At least two dosing components are connected to the side wall of the mixing pipe near the starting end of the water flow. The dosing components include a storage tank, a delivery pipe connecting the storage tank and the pipeline mixer, and a metering pump disposed on the delivery pipe. In this embodiment, the cooperation of the first and second mixing elements can further disrupt the water flow, increase the contact area and contact time between the chemical and the water, and make the mixing more uniform and thorough.

Description

Technical Field

[0001] This utility model relates to the field of tap water processing, and more specifically, to a reagent dosing device for tap water processing. Background Technology

[0002] In the process of tap water treatment, various chemicals are added to remove impurities and harmful substances and improve water quality. The quality and uniformity of chemical addition directly affect the treatment effect and water safety. Currently, traditional methods of adding chemicals to tap water treatment processes mostly involve simply adding them to the water without effective mixing methods. This results in incomplete mixing of chemicals and water, uneven distribution of chemicals, excessively high concentrations in some areas, and excessively low concentrations in others, failing to achieve the desired treatment effect and affecting the quality of tap water. Utility Model Content

[0003] In view of this, the present invention provides a reagent dosing device for tap water processing.

[0004] The objective of this utility model is achieved through the following technical solution: A reagent dosing device for tap water processing includes an inlet pipe, a pipe mixer, and a filter connected in sequence. The pipeline mixer includes a mixing pipe, a first mixing element arranged along the central axis of the mixing pipe, and a second mixing element disposed on the inner side wall of the mixing pipe. The first mixing element includes a plurality of forward spiral blades and reverse spiral blades. The forward spiral blades and reverse spiral blades are arranged alternately along the axial direction of the mixing pipe and rotate in opposite directions. The second mixing element has a plurality of guide grooves on the side facing the first mixing element. The sidewall of the mixing pipe is connected to at least two dosing assemblies near the starting end of the water flow. The dosing assembly includes a storage tank, a delivery pipe connecting the storage tank and the pipeline mixer, and a metering pump installed on the delivery pipe.

[0005] In the above technical solution, when tap water flows within the pipe mixer, the first mixing element, with its alternating forward and reverse spiral blades, creates repeated turbulence and reverse shearing within the water flow. This significantly enhances the mixing degree between different chemicals and water, allowing the chemicals to disperse rapidly and evenly in the water, effectively improving mixing efficiency. The multiple guide channels on the second mixing element guide the water flow to form specific flow trajectories. These channels, working in conjunction with the turbulence generated by the first mixing element, further disrupt the water flow, increasing the contact area and contact time between the chemicals and water, resulting in more uniform and thorough mixing, and further optimizing the mixing quality.

[0006] In addition, the two dosing units can precisely control the dosage of each agent through metering pumps. The addition ratio of the agents can be flexibly adjusted according to different water quality conditions and treatment requirements to achieve precise dosing, avoid agent waste, reduce treatment costs, and ensure stable and reliable quality of treated tap water.

[0007] Optionally, in one possible implementation, the first mixing component is detachably fixed inside the mixing pipe by a first mounting base, wherein there are two first mounting bases spaced apart along the axial direction of the mixing pipe, and the first mixing component is disposed between the two first mounting bases.

[0008] In the above technical solution, after long-term operation, scale or impurities may adhere to the surface of the spiral blades, affecting the mixing effect. The detachable design allows the entire first mixing component to be removed from the pipeline for thorough cleaning or maintenance, avoiding difficult and incomplete cleaning operations inside the pipeline.

[0009] Secondly, the two first mounting seats provide stable and precise positioning for the first mixing component. The first mixing component is firmly fixed between the two first mounting seats, preventing displacement or shaking due to the impact of high-speed water flow. This ensures that the first mixing component remains in the correct position, enabling it to continuously and stably perform its mixing function and guaranteeing the stability and consistency of the mixing effect between the reagent and water.

[0010] Optionally, in one possible implementation, the first mounting base includes a collar, a shaft block, and connecting ribs. The shaft block is located inside the collar and connected to the collar via a plurality of the connecting ribs. The collar is threadedly connected to the mixing pipe, and the first mixing component is threadedly connected to the shaft block via an extension post.

[0011] In the above technical solution, the first mounting base can be quickly installed simply by aligning the collar with the threaded interface on the mixing pipe and rotating the collar. At the same time, the extension column of the first mixing component is threadedly connected to the shaft block, and the first mixing component can be separated from the shaft block simply by rotating the collar. The operation is convenient and quick, which is beneficial to the maintenance and management of the equipment.

[0012] Optionally, in one possible implementation, the second mixing component is engaged between two first mounting seats via a second mounting base, wherein the second mounting seats are two spaced apart along the axial direction of the mixing pipe, and the second mixing component is disposed between the two second mounting seats.

[0013] In the above technical solution, the second mixing component and its second mounting base constitute a completely independent module, which can be disassembled, cleaned, inspected, or replaced separately. The second mixing component is precisely positioned between the two first mounting bases. This positioning method ensures that its relative position with the first mixing component in the axial and radial directions conforms to the design preset, effectively preventing positional deviations during installation or operation that could affect the performance.

[0014] Alternatively, in one possible implementation, the second mixing component is a plurality of components spaced circumferentially along the second mounting base.

[0015] In the above technical solution, when water flows through, each second mixing component generates an independent disturbance to the water flow, causing complex turbulence and vortices. These local turbulence and vortices superimpose and interact with each other, greatly enhancing the disturbance intensity of the water flow, thereby improving the mixing uniformity of the agent and water, ensuring that the agent can be more fully dissolved and dispersed in the water, and improving the quality of tap water treatment.

[0016] Alternatively, in one possible implementation, the guide channel has a wave-shaped structure or a continuous "V"-shaped structure.

[0017] In the above technical solutions, the wave-shaped or continuous "V"-shaped guide channels can disrupt the original steady state of water flow. When water flows through these specially shaped guide channels, it will generate complex changes in flow path under the guidance of the channels, forming a large amount of turbulence. The presence of turbulence intensifies the relative motion between the reagent and the water, thereby further improving the mixing effect.

[0018] Optionally, in one possible implementation, the filter includes a housing, and connecting pipes and an outlet pipe disposed at both ends of the housing, the housing being filled with filter sand.

[0019] In the above technical solution, the filter sand filling the tank has a rich porous structure and a large specific surface area, which can effectively trap suspended solids, particulate impurities, silt, rust, etc. in the water. When water flows through the filter sand layer, these impurities are blocked by the sand and gradually accumulate on the surface and in the pores of the sand, thereby achieving preliminary purification of the water quality and significantly improving the clarity and transparency of the water.

[0020] Optionally, in one possible implementation, both the inlet pipe and the outlet pipe are connected to a water quality monitoring instrument.

[0021] In the above technical solution, a water quality monitoring instrument is connected to the inlet pipe, which can detect the quality of the raw water entering the tap water processing system in real time and accurately. The water quality monitoring instrument on the outlet pipe can comprehensively test the processed tap water to ensure that the quality of the water leaving the plant meets relevant national standards and user requirements.

[0022] Alternatively, in one possible implementation, the inlet pipe is connected to the pipe mixer, and the pipe mixer is connected to the connecting pipe, both via flanges.

[0023] In the above technical solution, the flange connection method is simple and easy to implement, requiring no complicated tools or professional skills during installation and disassembly. When the pipe mixer needs to be inspected, replaced, or cleaned, the operator only needs to use common tools such as a wrench to loosen the bolts on the flange to separate the pipe mixer from the inlet pipe and connecting pipe. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of one embodiment.

[0026] Figure 2 This is a schematic diagram of the internal structure of a pipe mixer according to one embodiment.

[0027] Figure 3 This is a schematic diagram of the internal structure of the enclosure in one embodiment.

[0028] Reference numerals: 1-Inlet pipe; 2-Pipe mixer; 21-Mixing pipe; 22-First mixing component; 221-Forward spiral blade; 222-Reverse spiral blade; 23-Second mixing component; 231-Guide channel; 24-First mounting base; 241-Collar; 242-Shaft block; 243-Connecting rib; 25-Second mounting base; 3-Filter; 31-Box; 311-Filter sand; 32-Connecting pipe; 33-Outlet pipe; 4-Dosing assembly; 41-Storage tank; 42-Transfer pipe; 43-Metering pump; 5-Water quality monitor. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0031] Please refer to Figure 1 and Figure 2 This embodiment provides a chemical dosing device for tap water treatment, including an inlet pipe 1, a pipeline mixer 2, and a filter 3 connected in sequence. The pipeline mixer 2 includes a mixing pipe 21, a first mixing element 22 arranged along the central axis of the mixing pipe 21, and a second mixing element 23 disposed on the inner side wall of the mixing pipe 21. The first mixing element 22 includes multiple forward spiral blades 221 and reverse spiral blades 222. The forward spiral blades 221 and the reverse spiral blades 222 are arranged alternately along the axial direction of the mixing pipe 21 and rotate in opposite directions. The second mixing element 23 is provided with multiple guide grooves 231 on the side facing the first mixing element 22. At least two dosing components 4 are connected to the side wall of the mixing pipe 21 near the starting end of the water flow. The dosing components 4 include a storage tank 41, a delivery pipe 42 connecting the storage tank 41 and the pipeline mixer 2, and a metering pump 43 disposed on the delivery pipe 42.

[0032] When tap water flows within the pipe mixer 2, the first mixing element 22, with its forward spiral blades 221 and reverse spiral blades 222 arranged axially in an alternating pattern, generates repeated turbulence and reverse shearing within the water flow. This significantly enhances the mixing degree between different chemicals and water, allowing the chemicals to disperse rapidly and evenly in the water, effectively improving mixing efficiency. The multiple guide channels 231 on the second mixing element 23 guide the water flow to form a specific trajectory, working in conjunction with the turbulence generated by the first mixing element 22 to further disrupt the water flow, increasing the contact area and contact time between the chemicals and water, resulting in more uniform and thorough mixing, further optimizing the mixing quality.

[0033] In addition, the two dosing components 4 can precisely control the dosage of each agent through the metering pump 43. The addition ratio of the agent can be flexibly adjusted according to different water quality conditions and treatment requirements to achieve precise dosing, avoid agent waste, reduce treatment costs, and ensure stable and reliable quality of treated tap water.

[0034] Understandably, the raw water flowing through inlet pipe 1 contains a certain amount of iron and manganese ions. Under the combined action of free residual chlorine and dissolved oxygen, these iron and manganese ions oxidize to form ferric hydroxide and manganese dioxide precipitates, which adhere to the not-so-smooth inner wall of the distribution pipe and gradually accumulate, thus adversely affecting water quality. In this embodiment, the two dosing components 4 are used to store and add NaOH and KMnO4, respectively, to remove iron and manganese ions from the water.

[0035] In this embodiment, the first mixing component 22 is detachably fixed inside the mixing pipe 21 by means of the first mounting base 24. There are two first mounting bases 24 spaced apart along the axial direction of the mixing pipe 21, and the first mixing component 22 is disposed between the two first mounting bases 24. The two first mounting bases 24 are respectively disposed at both ends of the mixing pipe 21, so that the first mixing component 22 can cover the entire axial length of the mixing pipe 21 as much as possible, thereby allowing the first mixing component 22 to continuously perform its function within the entire mixing pipe 21.

[0036] After prolonged operation, scale or impurities may accumulate on the surface of the spiral blades, affecting the mixing effect. The detachable design allows the entire first mixing component 22 to be removed from the pipeline for thorough cleaning or maintenance, avoiding difficult and incomplete cleaning operations inside the pipeline. This also reduces maintenance difficulty and costs, minimizes equipment downtime, and ensures continuous and stable operation of the tap water processing system.

[0037] Secondly, the two first mounting seats 24 provide stable and precise positioning for the first mixing component 22. The first mixing component 22 is firmly fixed between the two first mounting seats 24, and will not be displaced or shaken due to the impact of the water flow when the water flows through at high speed. This ensures that the first mixing component 22 is always in the correct position and can continuously and stably perform its mixing function, thus guaranteeing the stability and consistency of the mixing effect between the agent and water.

[0038] In this embodiment, the first mounting base 24 includes a collar 241, a shaft block 242, and connecting ribs 243. The shaft block 242 is located inside the collar 241 and is connected to the collar 241 through several connecting ribs 243. The collar 241 is threadedly connected to the mixing pipe 21, and the first mixing component 22 is threadedly connected to the shaft block 242 through an extension post (not shown in the figure). The collar 241 is annular, and its outer surface is provided with external threads. The inner end of the mixing pipe 21 is provided with matching internal threads. The shaft block 242 is located at the center of the collar 241, and the shaft block 242 is provided with a threaded hole. The extension post is provided with external threads that match the threaded hole.

[0039] In this embodiment, simply aligning the collar 241 with the threaded interface on the mixing pipe 21 and rotating the collar 241 allows for quick installation of the first mounting base 24. Simultaneously, the extension post of the first mixing component 22 is threadedly connected to the shaft block 242; similarly, rotating the collar 241 allows for separation of the first mixing component 22 from the shaft block 242. This convenient and quick operation facilitates equipment maintenance and management. Specifically, both first mounting bases 24 and the first mixing component 22 are detachable. During assembly, one end of the first mixing component 22 can be threaded onto one of the first mounting bases 24, which is then threaded into the mixing pipe 21. Finally, the other first mounting base 24 is threaded onto both the mixing pipe 21 and the other end of the first mixing component 22.

[0040] Furthermore, in this embodiment, the second mixing component 23 is secured between two first mounting seats 24 via a second mounting seat 25. Two second mounting seats 25 are spaced apart along the axial direction of the mixing pipe 21, and the second mixing component 23 is disposed between the two second mounting seats 25. The second mounting seats 25 are annular in shape, and the two second mounting seats 25 can respectively abut against the inner sides of the two first mounting seats 24.

[0041] The second mixing component 23 and its second mounting base 25 constitute a completely independent module, which can be disassembled, cleaned, inspected, or replaced separately. The second mixing component 23 is precisely engaged between the two first mounting bases 24. This positioning method ensures that its relative position with the first mixing component 22 in the axial and radial directions conforms to the design preset, effectively preventing positional deviations during installation or operation that could affect the performance.

[0042] It should be noted that multiple second mixing components 23 are arranged circumferentially along the second mounting base 25. When water flows through, each second mixing component 23 generates an independent disturbance to the water flow, causing complex turbulence and vortices. These local turbulence and vortices superimpose and interact with each other, greatly enhancing the disturbance intensity of the water flow, thereby improving the mixing uniformity of the agent and water, ensuring that the agent can be more fully dissolved and dispersed in the water, and improving the quality of tap water treatment.

[0043] The second mixing component 23 works in conjunction with the first mixing component 22 to form a multi-layered mixing structure. The first mixing component 22 generates complex turbulence and shear forces through the forward spiral blades 221 and the reverse spiral blades 222, which initially mixes the reagent with the water. Meanwhile, the guide channel 231 on the second mixing component 23 can further guide the water flow, change the flow direction and velocity distribution of the water flow, and superimpose and supplement the turbulence generated by the first mixing component 22, so that the reagent and water are fully mixed over a wider range, which greatly improves the uniformity and efficiency of mixing, thereby improving the quality of tap water treatment.

[0044] In this embodiment, the guide channel 231 has a wave-shaped structure or a continuous "V"-shaped structure. The wave-shaped or continuous "V"-shaped guide channel 231 can break the original steady state of the water flow. When the water flows through these specially shaped guide channels 231, it will generate complex flow path changes under the guidance of the guide channels 231, forming a large amount of turbulence. The presence of turbulence intensifies the relative motion between the reagent and the water, thereby further improving the mixing effect.

[0045] Furthermore, compared to the straight-line guide channel 231, the wavy and continuous "V"-shaped guide channel 231 increases the flow path length of the water on the surface of the mixing component. The water flow needs to constantly change direction along the undulations or bends of the guide channel 231, which allows more time for the reagent and water to mix and react. The longer mixing path helps ensure good mixing at all points within the mixing pipe 21, avoiding incomplete local mixing.

[0046] Qing Reference Figure 1 and Figure 3 In this embodiment, the filter 3 includes a housing 31, and connecting pipes 32 and outlet pipes 33 disposed at both ends of the housing 31. The housing 31 is filled with filter sand 311. The filter sand 311 is manganese sand with a particle diameter of 0.8 to 1.2 mm.

[0047] The filter sand 311 filling the housing 31 has a rich porous structure and a large specific surface area, which can effectively trap suspended solids, particulate impurities, silt, rust, etc. in the water. When water flows through the filter sand 311 layer, these impurities are blocked by the sand and gradually accumulate on the surface and in the pores of the sand, thereby achieving preliminary purification of the water quality and significantly improving the clarity and transparency of the water. In this embodiment, iron and manganese ions in the water can be converted into solid iron and manganese, which are then ultimately trapped by the filter 3 along with the suspended solids in the water.

[0048] In this embodiment, a water quality monitor 5 is connected to both the inlet pipe 1 and the outlet pipe 33. The water quality monitor 5 is a conventional device that can be used to monitor the iron and manganese ion content in the water.

[0049] A water quality monitor 5 is connected to the inlet pipe 1, enabling real-time and accurate monitoring of the raw water quality entering the water treatment system. The water quality monitor 5 on the outlet pipe 33 can comprehensively monitor the treated tap water, ensuring that the water quality meets relevant national standards and user requirements, and ensuring that the iron and manganese levels in the treated water are controlled below 0.3 mg / L and 0.1 mg / L respectively. In this embodiment, the water inlet pipe 1 and the pipe mixer 2, as well as the pipe mixer 2 and the connecting pipe 32, are connected by flanges.

[0050] The flange connection method is simple and easy to implement, requiring no complicated tools or professional skills during installation and disassembly. When the pipe mixer 2 needs to be inspected, replaced, or cleaned, the operator only needs to use common tools such as a wrench to loosen the bolts on the flange to separate the pipe mixer 2 from the inlet pipe 1 and the connecting pipe 32.

[0051] In the description of this utility model, it should be understood that terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this 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. Therefore, they should not be construed as limitations on this utility model.

[0052] 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.

[0053] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A reagent dosing device for tap water treatment, characterized in that, It includes an inlet pipe, a pipe mixer, and a filter connected in sequence; The pipeline mixer includes a mixing pipe, a first mixing element arranged along the central axis of the mixing pipe, and a second mixing element disposed on the inner side wall of the mixing pipe. The first mixing element includes a plurality of forward spiral blades and reverse spiral blades. The forward spiral blades and reverse spiral blades are arranged alternately along the axial direction of the mixing pipe and rotate in opposite directions. The second mixing element has a plurality of guide grooves on the side facing the first mixing element. The sidewall of the mixing pipe is connected to at least two dosing assemblies near the starting end of the water flow. The dosing assembly includes a storage tank, a delivery pipe connecting the storage tank and the pipeline mixer, and a metering pump installed on the delivery pipe.

2. The reagent dosing device for tap water treatment according to claim 1, characterized in that, The first mixing component is detachably fixed inside the mixing pipe by means of a first mounting base. There are two first mounting bases spaced apart along the axial direction of the mixing pipe, and the first mixing component is disposed between the two first mounting bases.

3. The reagent dosing device for tap water treatment according to claim 2, characterized in that, The first mounting base includes a collar, a shaft block, and connecting ribs. The shaft block is located inside the collar and is connected to the collar through a plurality of connecting ribs. The collar is threadedly connected to the mixing pipe. The first mixing component is threadedly connected to the shaft block through an extension post.

4. The reagent dosing device for tap water treatment according to claim 2, characterized in that, The second mixing component is secured between two first mounting seats via a second mounting base. The second mounting seats are two units spaced apart along the axial direction of the mixing pipe, and the second mixing component is positioned between the two second mounting seats.

5. The reagent dosing device for tap water treatment according to claim 4, characterized in that, The second mixing component is a plurality of components spaced apart circumferentially along the second mounting base.

6. The reagent dosing device for tap water treatment according to claim 1, characterized in that, The guide channel has a wave-shaped structure or a continuous "V"-shaped structure.

7. The reagent dosing device for tap water treatment according to claim 1, characterized in that, The filter includes a housing, and connecting pipes and an outlet pipe disposed at both ends of the housing. The housing is filled with filter sand.

8. The reagent dosing device for tap water treatment according to claim 7, characterized in that, Water quality monitoring instruments are connected to both the inlet and outlet pipes.

9. The reagent dosing device for tap water treatment according to claim 7, characterized in that, The inlet pipe is connected to the pipe mixer, and the pipe mixer is connected to the connecting pipe via flanges.

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