Automatic dosing device for water treatment
By designing an automatic dosing device for water treatment, the problem of the single dosing method in traditional methods has been solved, and the precise control and uniform mixing of multiple agents have been achieved, thereby improving the adaptability and effectiveness of water treatment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-15
- Publication Date
- 2026-03-17
AI Technical Summary
Traditional water treatment methods are limited and cannot meet the complex and ever-changing water quality treatment needs. Inaccurate control of chemical dosage and uneven mixing affect the treatment effect.
Design an automatic water treatment dosing device, comprising a chemical storage unit, a water quality monitoring unit, and a dosing execution unit. Employ a multi-parameter detection module, a PLC controller, and a mixer to achieve precise control and uniform mixing of various chemicals.
It enables flexible storage and precise dosing of various reagents, improves water treatment efficiency, enhances the adaptability and mixing efficiency of the device, ensures reagent uniformity and stability, and improves coagulation and sedimentation effects.
Smart Images
Figure CN224001099U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of water purification technology, specifically relating to an automatic dosing device for water treatment. Background Technology
[0002] In water purification processes, various chemicals are often added to achieve good water purification results, such as pH-adjusting agents, flocculants to remove turbidity, and disinfectants. Different water quality problems require different chemicals, and there are strict requirements for the dosage and mixing of these chemicals.
[0003] Traditional water treatment dosing methods are often limited and cannot meet the complex and ever-changing water quality treatment needs. Some dosing devices may only store and add one or a few types of chemicals, failing to flexibly address different water quality conditions. Furthermore, there are issues with the precision of chemical dosage control, easily leading to overdosing, resulting in waste and secondary pollution, or underdosing, failing to achieve the desired treatment effect. Regarding chemical mixing, existing methods may result in uneven mixing, preventing the chemicals from fully contacting and reacting with the raw water, thus affecting the efficiency and effectiveness of water treatment. For example, in some coagulation and sedimentation processes, insufficient mixing of chemicals with raw water leads to poor flocculation, failing to effectively remove suspended solids and impurities from the water.
[0004] In view of this, we propose an automatic water treatment dosing device that can simultaneously store multiple reagents, precisely control the dosage, and achieve efficient mixing to solve the above problems. Utility Model Content
[0005] The present invention aims to solve the technical problem that the existing water treatment chemical dosing methods are often relatively simple and difficult to meet the complex and ever-changing water quality treatment needs.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] An automatic water treatment dosing device includes:
[0008] The drug storage unit includes multiple drug storage tanks arranged in parallel. The drug dosing pipelines on the drug storage tanks are equipped with metering pumps and frequency converters; it can accurately control the dosage of the drug and maintain the fluidity of the drug, ensuring the stability and accuracy of the dosing process.
[0009] The water quality monitoring unit is a multi-parameter detection module consisting of a pH sensor, a turbidity sensor, and a residual chlorine detector; and the water quality monitoring unit is installed in the secondary sedimentation tank; it monitors water quality parameters in real time, provides accurate data support for the control unit, and ensures that the water quality meets the standards.
[0010] The control unit uses a PLC controller connected to a touch screen and has a built-in PID control algorithm and dosing calculation model. It can automatically calculate the dosage of the agent based on water quality monitoring data and control the output power of the metering pump through a frequency converter valve to achieve automated control.
[0011] The dosing unit includes a ring distributor, a double-helix cone mixer located at the outlet of the ring distributor, and a pipeline mixer located at the outlet of the double-helix cone mixer. The pipeline mixer is installed on the pipeline connecting the secondary sedimentation tank to the coagulation sedimentation tank. It can uniformly mix and accurately add the reagents to the coagulation sedimentation tank, improving the treatment effect.
[0012] As a preferred option, the water quality monitoring unit collects raw water parameters in the secondary sedimentation tank in real time, the PLC controller automatically calculates the dosage of each agent according to the preset water quality standard, and controls the output power of the metering pump through the frequency conversion regulating valve. The agent in the agent storage tank is injected into the coagulation sedimentation tank after passing through the dosing pipeline, the double spiral cone mixer and the pipeline mixer.
[0013] Preferably, each medicine storage tank is equipped with a pneumatic agitator and an electric heating jacket at the bottom to prevent medicine crystallization and precipitation.
[0014] Preferably, the annular distributor includes an annular ring with an annular groove, a connecting nozzle threaded through equally spaced through holes on the annular ring and connected to the drug inlets arranged annularly at equal intervals on the double-helix conical mixer, and the connecting nozzle being connected to the drug dosing pipeline via a quick connector. This allows for uniform distribution of the drug into the double-helix conical mixer, improving the mixing effect.
[0015] Preferably, the annular ring has U-shaped openings arranged at equal intervals to accommodate the dosing pipe, and the dosing pipe is positioned in the annular groove after passing through the U-shaped opening.
[0016] Preferably, the annular ring is fixed to the mounting bracket at the top of the double-helix conical mixer.
[0017] Preferably, the outer side of the annular distributor is provided with an arc-shaped guide channel, and the dosing pipes coming out of the annular groove are guided and arranged to pass through the arc-shaped guide channel.
[0018] Preferably, the discharge port flange at the bottom of the double helical cone mixer is connected to a dosing valve, and the bottom flange of the pressure valve is connected to the dosing port of the pipeline mixer.
[0019] Preferably, the dosing unit has one pipeline mixer, two annular distributors and two double-helix conical mixers, and two dosing ports on the pipeline mixer.
[0020] Compared with the prior art, the technical effects and advantages of this utility model are:
[0021] This automatic water treatment dosing system mainly consists of a chemical storage unit, a water quality monitoring unit, a control unit, and a dosing execution unit working in concert. The water quality monitoring unit uses a pH sensor, turbidity sensor, and residual chlorine detector to collect multiple water quality parameters of the raw water in the secondary sedimentation tank in real time. After receiving this data, the PLC controller in the control unit calculates the dosage of each chemical based on preset water quality standards and a built-in dosing calculation model. Then, the output power of the metering pump is controlled by a frequency converter to precisely deliver the chemicals from multiple chemical storage tanks in the chemical storage unit. The chemicals are evenly distributed to two double-helix conical mixers via a ring distributor. The double-helix conical mixers utilize a double-helix structure to create turbulence, ensuring thorough mixing of the chemicals with the raw water. The two mixers alternately dispense chemicals and supply them to a pipeline mixer, which further enhances the mixing effect before injecting the chemicals into the coagulation sedimentation tank.
[0022] Multiple parallel chemical storage tanks can store various chemicals simultaneously, flexibly addressing different water quality issues such as pH adjustment, turbidity removal, and disinfection, enhancing the system's ability to treat complex water conditions. Metering pumps precisely control the chemical delivery rate, preventing over- or under-dosing and improving water treatment efficiency. Variable frequency control valves dynamically adjust the dosage, enhancing system flexibility and adaptability. Pneumatic agitators at the bottom of each storage tank prevent chemical crystallization and precipitation, ensuring uniform and stable chemical distribution; electric heating jackets control chemical temperature, ensuring the activity and effectiveness of temperature-sensitive chemicals.
[0023] The water quality monitoring unit, installed in the secondary sedimentation tank, acquires accurate water quality information, providing reliable data support for chemical dosing control. The PLC controller boasts high reliability, flexible programming, and strong anti-interference capabilities, ensuring stable operation of the device. The touchscreen facilitates operation, allowing personnel to view status, set parameters, and perform operations. PID control algorithms and a dosing calculation model enable precise dosing control, improving the scientific rigor and rationality of dosing. The combined design of a ring distributor, a double-helix conical mixer, and a pipeline mixer achieves efficient mixing and dosing of multiple chemicals, improving mixing efficiency and uniformity. Alternating chemical supply from two double-helix conical mixers ensures the continuity of raw water treatment, ultimately enhancing coagulation and sedimentation effects and overall water treatment quality. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the structure of this utility model;
[0025] Figure 2 This is a schematic diagram of the structure of the annular distributor and the double-helix conical mixer of this utility model;
[0026] Figure 3 This is a schematic diagram of the structure of the double-helix conical mixer of this utility model;
[0027] Figure 4 This is a first-view view of the annular distributor of this utility model;
[0028] Figure 5 This is a second-view view of the annular distributor of this utility model.
[0029] In the diagram: 1. Chemical storage tank; 2. Dosing pipeline; 3. Annular distributor; 31. Annular groove; 32. Annular ring; 33. Through hole; 34. Connecting nozzle; 35. Quick connector; 36. U-shaped opening; 4. Double helix cone mixer; 41. Chemical inlet; 42. Mounting bracket; 5. Pipeline mixer; 6. Arc-shaped guide channel; 7. Dosing valve; 8. Dosing port. Detailed Implementation
[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0031] The following combination Figures 1 to 5 This application will be described in further detail.
[0032] This application discloses an automatic water treatment dosing device, including a chemical storage unit, a water quality monitoring unit, a control unit, and a dosing execution unit;
[0033] The drug storage unit includes multiple drug storage tanks 1 arranged in parallel. The drug dosing pipeline 2 on the drug storage tank 1 is equipped with a metering pump and a frequency conversion regulating valve. Each drug storage tank 1 is equipped with a pneumatic stirrer and an electric heating jacket at the bottom to prevent drug crystallization and precipitation.
[0034] Multiple parallel chemical storage tanks 1 can simultaneously store various chemicals to meet different water treatment needs. Different water quality problems may require different chemicals to solve, such as adjusting pH, removing turbidity, and disinfection. Multiple chemical storage tanks 1 allow for flexible selection of appropriate chemicals when treating complex water conditions.
[0035] Metering pumps can precisely control the delivery rate of chemicals, ensuring accurate dosing and preventing over- or under-dosing, thereby improving water treatment efficiency. Variable frequency control valves can adjust the output power of the metering pump according to actual needs, enabling dynamic adjustment of the dosing amount and improving the system's flexibility and adaptability.
[0036] Pneumatic stirrers prevent drug crystallization and precipitation, ensuring the uniformity and stability of the drug. Some drugs are prone to precipitation or crystallization during storage, which can affect the concentration and performance of the drug. Stirrers can keep the drug in a uniform state at all times. Electric heating mantles can control the temperature of the drug, especially for some drugs that are greatly affected by temperature. Appropriate temperature can ensure the activity and effectiveness of the drug.
[0037] The water quality monitoring unit is a multi-parameter detection module consisting of a pH sensor, a turbidity sensor, and a residual chlorine detector; and the water quality monitoring unit is installed in the secondary sedimentation tank; the control unit uses a PLC controller connected to a touch screen, with built-in PID control algorithm and dosing calculation model; the dosing execution unit includes a ring distributor 3, a double helical cone mixer 4 located at the outlet of the ring distributor 3, and a pipeline mixer 5 located at the outlet of the double helical cone mixer 4. The pipeline mixer 5 is installed on the pipeline leading from the secondary sedimentation tank to the coagulation sedimentation tank.
[0038] The multi-parameter detection module, consisting of a pH sensor, a turbidity sensor, and a residual chlorine detector, can monitor multiple water quality parameters of the raw water in the secondary sedimentation tank in real time and comprehensively, such as pH, turbidity, and residual chlorine content. By monitoring these key parameters, changes in water quality can be understood in a timely manner, providing accurate data support for subsequent chemical dosing control.
[0039] The water quality monitoring unit is installed inside the secondary sedimentation tank, allowing direct acquisition of accurate water quality information from the raw water within the tank, ensuring the accuracy and timeliness of the monitoring data. The secondary sedimentation tank is a crucial step in the water treatment process; monitoring water quality here reflects the water quality status after the previous stage of treatment, providing key information for subsequent coagulation and sedimentation processes.
[0040] The PLC controller boasts advantages such as high reliability, flexible programming, and strong anti-interference capabilities, enabling stable control of the entire dosing system. The touchscreen provides convenient human-machine interaction, allowing operators to intuitively view the system's operating status, set parameters, and perform operations, thus improving ease of operation and visualization.
[0041] The PID control algorithm can automatically adjust the dosage based on real-time data from the water quality monitoring unit, enabling water quality parameters to quickly and stably reach preset standards and achieving precise dosing control. The dosing calculation model can accurately calculate the required dosage based on different water quality conditions and treatment requirements, improving the scientific rigor and rationality of dosing.
[0042] The discharge flange at the bottom of the double helical cone mixer 4 is connected to a dosing valve 7, and the bottom flange of the pressure valve is connected to the dosing port 8 of the pipeline mixer 5. There is one pipeline mixer 5 on the dosing execution unit, and two each on the annular distributor 3 and the double helical cone mixer 4. The pipeline mixer 5 has two dosing ports 8.
[0043] The annular distributor 3 can evenly distribute the chemicals from multiple chemical storage tanks 1 into the double-helix conical mixer 4, ensuring thorough mixing of each chemical. The double-helix conical mixer 4 has highly efficient mixing performance, enabling the chemicals to fully contact and mix with the raw water, improving the reaction effect. Its unique double-helix structure creates strong turbulence during mixing, promoting uniform mixing of the chemicals and raw water. The pipeline mixer 5 further enhances the mixing effect of the chemicals and raw water, allowing the chemicals to be more evenly dispersed in the raw water, improving the coagulation and sedimentation effect.
[0044] The pipeline mixer 5 has one unit, while there are two annular distributors 3 and two double-helix conical mixers 4. The pipeline mixer 5 also has two dosing ports 8. This design allows for the simultaneous mixing and dosing of multiple chemicals, improving mixing efficiency and uniformity. The two annular distributors 3 and double-helix conical mixers 4 can alternately mix and dispense chemicals, providing them to the pipeline mixer 5 in an alternating manner to ensure continuous raw water treatment.
[0045] The water quality monitoring unit collects raw water parameters in the secondary sedimentation tank in real time. The PLC controller automatically calculates the dosage of each agent according to the preset water quality standard. The output power of the metering pump is controlled by the frequency conversion regulating valve. The agent in the agent storage tank 1 is injected into the coagulation sedimentation tank after passing through the dosing pipeline 2, the double spiral cone mixer 4, and the pipeline mixer 5.
[0046] The annular distributor 3 includes an annular ring 32 with an annular groove 31, a connecting nozzle 34 threaded through equally spaced through holes 33 on the annular ring 32 and connected to the equally spaced inlet ports 41 on the double helical conical mixer 4, and the connecting nozzle 34 is connected to the dosing pipe 2 via a quick connector 35. The annular ring 32 has equally spaced U-shaped openings 36 for the dosing pipe 2 to pass through, and the dosing pipe 2 is positioned within the annular groove 31 after passing through the U-shaped openings 36. The annular ring 32 is fixed to a mounting bracket 42 on the top of the double helical conical mixer 4. An arc-shaped guide channel 6 is provided on the outer side of the annular distributor 3, through which the dosing pipe 2 exiting from the annular groove 31 is guided and arranged.
[0047] The annular groove 31 can accommodate the dosing pipeline 2, making the pipeline layout more neat and orderly, and facilitating management and maintenance. The connecting nozzle 34 is threaded to the inlet 41 on the double helical cone mixer 4, and is connected to the dosing pipeline 2 through the quick connector 35. This connection method is convenient and quick, has good sealing performance, and can ensure the smooth delivery of the agent.
[0048] The U-shaped opening 36 facilitates the installation and positioning of the dosing pipeline 2, allowing the pipeline to accurately pass through the annular ring 32 and be fixed within the annular groove 31. The arc-shaped guide channel 6 guides and arranges the dosing pipeline 2, preventing pipelines from tangling and crossing, ensuring smooth and safe operation of the pipeline.
[0049] The dosing process of this automatic water treatment dosing device is as follows:
[0050] Water quality monitoring: A multi-parameter detection module consisting of a pH sensor, a turbidity sensor, and a residual chlorine detector collects multiple water quality parameters in real time, such as acidity, alkalinity, turbidity, and residual chlorine content of the raw water in the secondary sedimentation tank.
[0051] Dosage calculation: The PLC controller automatically calculates the dosage of each agent based on the preset water quality standards and real-time data fed back by the water quality monitoring unit, using the built-in dosage calculation model.
[0052] Pharmaceutical delivery control: The PLC controller controls the output power of the metering pump through a frequency converter valve, precisely controlling the delivery volume of the pharmaceuticals in the multiple parallel pharmaceutical storage tanks 1. Pneumatic stirrers and electric heating jackets at the bottom of each pharmaceutical storage tank 1 ensure the uniformity, stability, and activity of the pharmaceuticals.
[0053] Chemical Dispensing and Mixing: The annular distributor 3 evenly distributes the chemicals from multiple chemical storage tanks 1 into two double-helix conical mixers 4. The double-helix conical mixers 4 utilize their unique double-helix structure to create strong turbulence, ensuring thorough contact and mixing of the chemicals with the raw water. The two double-helix conical mixers 4 alternately mix and dispense the chemicals, supplying them to a pipeline mixer 5, which further enhances the mixing effect between the chemicals and the raw water. The thoroughly mixed chemicals are then injected into the coagulation sedimentation tank through the pipeline mixer 5, completing the dosing process.
[0054] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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 water treatment automatic dosing device, characterized in that, The utility model relates to a water treatment system, which comprises: a medicine storage unit including a plurality of medicine storage tanks (1) arranged side by side, a metering pump and a variable frequency regulating valve provided on a medicine feeding pipe (2) of the medicine storage tank (1); a water quality monitoring unit, which is a multi-parameter detection module composed of a pH sensor, a turbidity sensor and a residual chlorine detector, and is installed in a secondary sedimentation tank; a control unit, which is connected to a touch screen using a PLC controller, and is internally provided with a PID control algorithm and a medicine feeding amount calculation model; a medicine feeding execution unit, which includes a ring distributor (3), a double helical conical mixer (4) located at the outlet of the ring distributor (3), and a pipe mixer (5) located at the outlet of the double helical conical mixer (4), and the pipe mixer (5) is installed on a pipe leading to a coagulation sedimentation tank from the secondary sedimentation tank.
2. The automatic water treatment dosing device according to claim 1, characterized in that: The water quality monitoring unit collects real-time raw water parameters in the secondary sedimentation tank, the PLC controller automatically calculates the dosing amount of each medicine according to the preset water quality standard, controls the output power of the metering pump through the variable frequency regulating valve, and the medicine in the medicine storage tank (1) is injected into the coagulation sedimentation tank through the medicine feeding pipe (2), the double helical conical mixer (4) and the pipe mixer (5).
3. The automatic water treatment dosing device according to claim 1, characterized in that: The bottom of each medicine storage tank (1) is provided with a pneumatic agitator and an electric heating jacket to prevent crystallization and precipitation of the medicine.
4. The automatic water treatment dosing device according to claim 1, characterized in that: The ring distributor (3) includes a ring (32) with a ring groove (31), a butt joint nozzle (34) penetrating through the equidistantly arranged through holes (33) of the ring (32) and being threadedly connected with the medicine inlet ports (41) of the double helical conical mixer (4), and the butt joint nozzle (34) is connected with the medicine feeding pipe (2) through a quick connector (35).
5. The automatic water treatment dosing device according to claim 4, characterized in that: The ring (32) is provided with U-shaped openings (36) arranged equidistantly and circularly on the ring, which are matched with the medicine feeding pipe (2) to pass through, and the medicine feeding pipe (2) is positioned in the ring groove (31) after passing through the U-shaped openings (36).
6. The automatic water treatment dosing device according to claim 5, characterized in that: The ring (32) is fixed on a mounting bracket (42) at the top of the double helical conical mixer (4).
7. The automatic water treatment dosing device according to claim 4, characterized in that: The outer side of the ring distributor (3) is provided with an arc-shaped guide channel (6), and the medicine feeding pipe (2) coming out of the ring groove (31) is arranged in a guide manner and passes through the arc-shaped guide channel (6).
8. The automatic water treatment dosing device according to claim 1, characterized in that: The discharge flange of the bottom of the double helical conical mixer (4) is butt jointed with a medicine feeding valve (7), and the bottom flange of the pressurizing valve is butt jointed to the medicine inlet port (8) of the pipe mixer (5).
9. The automatic water treatment dosing device according to claim 8, characterized in that: There is one pipe mixer (5) on the medicine feeding execution unit, two ring distributors (3) and two double helical conical mixers (4), and the medicine inlet port (8) of the pipe mixer (5) has two.