A water treatment coagulation tank dosing stirring monitoring device

Abstract

The application provides a tap water treatment coagulation tank dosing and stirring monitoring device, which comprises a stirring motor and a stirring shaft, a mounting platform is arranged on the coagulation tank, the stirring motor is mounted on the mounting platform, the stirring motor and the stirring shaft are connected through a shaft coupling, and the device further comprises a dosing device and a sensor assembly, the dosing device comprises a medicine box, a dosing pump, a medicine conveying pipe and a rotary medicine conveying device, a plurality of dosing openings are arranged along the stirring shaft, the dosing pump conveys the medicament in the medicine box to each dosing opening through the rotary medicine conveying device and the medicine conveying pipe respectively, and the medicament is put into the coagulation tank through the dosing openings. The tap water treatment coagulation tank dosing and stirring monitoring device provided by the application adopts integrated design, integrates the stirring and the dosing to realize compact structure and function integration, the key parameters of the water body in the coagulation tank can be obtained in real time through the sensor assembly, the stirring speed and the dosing amount can be automatically adjusted accurately based on the monitoring data, and the stability and reliability of the coagulation effect are ensured.

Description

Technical Field

[0001] This invention relates to the technical field of coagulation and mixing in water treatment, and particularly to a monitoring device for chemical dosing and mixing in a coagulation tank for tap water treatment. Background Technology

[0002] Coagulation tanks are an important unit in wastewater treatment, mainly used to remove suspended solids, colloids, and dissolved organic matter from water. The coagulation process involves adding chemical agents (coagulants) to the water, causing tiny particles in the water to aggregate and form larger, more easily settling flocs, thereby achieving solid-liquid separation.

[0003] The working principle is as follows: a coagulant (such as aluminum sulfate, polyaluminum chloride, iron salts, etc.) is added to the water to be treated. The coagulant neutralizes the surface charge of the colloids, disrupting their stability and making them easier to aggregate into larger particles. After the coagulant is added, it needs to be quickly and evenly dispersed into the water through stirring; this stage is called the rapid mixing stage, and its purpose is to ensure sufficient contact between the coagulant and the colloids and suspended solids in the water. Under slow stirring, the already aggregated small particles further aggregate into larger flocs. This stage is called the flocculation stage, characterized by a slower stirring speed to prevent the already formed flocs from being broken up. After the flocs form, the sedimentation stage begins, where larger flocs settle from the water due to gravity, achieving solid-liquid separation.

[0004] In existing coagulation tank technology, mixing and chemical dosing are two separate operations. Traditional mixing methods typically employ simple mechanical agitation, such as paddle mixers or turbine mixers, which are driven by motors to achieve mixing of the water. Separate chemical dosing systems separate the dosing process from the mixing process, generally using a separate dosing device to add chemicals to the coagulation tank.

[0005] The existing coagulation tank mixing and dosing technology has the following problems:

[0006] 1. Uneven mixing effect: The structure and operation mode of traditional agitators may lead to inconsistent mixing intensity in different areas of the coagulation tank, thus affecting the uniformity of the coagulation reaction. For example, in some corners or edge areas, the water flow velocity is slower, and the mixing of the reagent and the water is not sufficient, reducing the coagulation effect.

[0007] 2. Difficulty in controlling dosing precision: Independent dosing systems often rely on manual experience or simple timed and quantitative dosing methods, making it impossible to accurately adjust the dosage based on real-time water quality changes and agitation. This can lead to wasted chemicals or insufficient dosage, affecting coagulation efficiency and treatment costs.

[0008] 3. Lack of synergy: The separate operation of mixing and dosing results in a lack of effective synergy between the two. It is impossible to adjust the dosing strategy in a timely manner based on the water condition during mixing, nor to optimize the mixing speed and intensity based on the post-dosing reaction.

[0009] 4. Insufficient monitoring methods: Most existing mixers lack real-time monitoring of key parameters in the coagulation process, such as turbidity, pH value, and temperature of the water. This makes it difficult for operators to accurately grasp the progress and effect of the coagulation reaction, and to make timely adjustments and optimizations.

[0010] 5. High energy consumption: Due to the low mixing efficiency, in order to achieve a certain coagulation effect, it is often necessary to increase the motor power and mixing time, thereby increasing energy consumption.

[0011] 6. High maintenance costs: Due to its complex structure and poor coordination, the mixer has many vulnerable parts, and maintenance and repair work is more frequent, which increases the maintenance cost of the equipment.

[0012] For example, in a wastewater treatment plant, the traditional coagulation tank mixer used did not mix evenly, resulting in the coagulant failing to fully function in some areas and unstable effluent quality. In another industrial wastewater treatment plant, the independent dosing system could not accurately control the dosage, leading to overuse of chemicals and increased treatment costs. Summary of the Invention

[0013] To address the problems existing in the mixing of existing coagulation tanks, this invention provides a water treatment coagulation tank dosing and mixing monitoring device that adopts an integrated design, combining mixing and dosing, and achieving a compact structure and functional integration.

[0014] The solution adopted by this invention to solve its technical problem is: a chemical dosing and stirring monitoring device for a coagulation tank in tap water treatment, comprising a stirring motor and a stirring shaft, an installation platform erected on the coagulation tank, a stirring motor installed on the installation platform, and a coupling connecting the stirring motor and the stirring shaft. The device also includes a dosing device and a sensor assembly. The dosing device includes a chemical tank, a dosing pump, a delivery pipe, and a rotary delivery device. Multiple dosing ports are arranged along the stirring shaft. The dosing pump delivers the chemical from the chemical tank to each dosing port through the rotary delivery device and the delivery pipe, discharging the chemical into the coagulation tank through the dosing ports. The chemical agent is added to the tank. The rotary delivery device includes a rotating sleeve, a ring platform on the stirring shaft with multiple through holes, the rotating sleeve being fitted onto the stirring shaft, the upper end of the rotating sleeve being sealed to the shaft of the stirring shaft, and the lower end of the rotating sleeve being sealed to the ring platform. A cavity is left between the rotating sleeve and the stirring shaft as a temporary storage chamber for the chemical agent. A chemical inlet is provided on the outer wall of the rotating sleeve. The chemical agent delivered by the chemical tank and the dosing pump is delivered to the temporary storage chamber through the chemical inlet. The through holes on the ring platform are connected to the chemical inlets along the stirring shaft through delivery pipes. The sensor assembly includes a turbidity sensor, a pH sensor, and a temperature sensor. The turbidity sensor is installed at the outlet of the tank, and the pH sensor and temperature sensor are installed at different positions in the middle of the tank.

[0015] Furthermore, the stirring shaft includes a vertical shaft and multiple stirring blades. The stirring blades are fixed vertically along the shaft and are perpendicular to each other. The shaft is connected to the stirring motor via a coupling. The rotation of the shaft drives the stirring blades to stir the water in the coagulation tank.

[0016] Furthermore, the upper and lower ends of the rotating sleeve are respectively provided with an inwardly extending annular upper baffle and a lower baffle, wherein a bushing is installed between the upper baffle and the shaft of the stirring shaft, the upper surface of the lower baffle is in contact with the lower surface of the annular baffle, and a sealing ring is installed between the lower baffle and the annular baffle.

[0017] Furthermore, a support spring is also installed inside the rotating sleeve. The support spring is fitted onto the shaft of the stirring shaft and is located between the upper baffle and the ring platform.

[0018] Furthermore, the dosing port is located at the junction of the stirring blade and the shaft, and the dosing port is equipped with a mesh to ensure uniform distribution of the agent.

[0019] Furthermore, the stirring blades are arc-shaped with serrated edges to enhance the stirring effect.

[0020] Furthermore, it also includes an intelligent monitoring system, which acquires water information in the coagulation tank in real time through sensor components. A flow regulating valve is installed on the delivery pipe between the ring platform and the dosing port. The intelligent monitoring system controls the flow regulating valve to control the dosing based on the real-time water information.

[0021] The beneficial effects of the present invention: The water treatment coagulation tank dosing and stirring monitoring device provided by the present invention adopts an integrated design: the stirring device and the dosing device are integrated into one device, realizing the compact structure and the integration of functions.

[0022] Intelligent monitoring function: Equipped with turbidity sensors, pH sensors and temperature sensors, it can acquire key parameters of the water in the coagulation tank in real time.

[0023] Precise control: Based on monitoring data, the stirring speed and dosage are automatically and precisely adjusted to ensure the stability and reliability of the coagulation effect.

[0024] The dosing and stirring monitoring device of the present invention has the following advantages:

[0025] 1. Improve coagulation efficiency: The synergistic effect of stirring and chemical addition, as well as real-time intelligent monitoring and adjustment, enables the coagulation reaction to be faster and more complete, greatly shortening the processing time.

[0026] 2. Ensure stable treatment results: Precise control of stirring speed and dosage avoids fluctuations in coagulation effect caused by human error or environmental changes, ensuring that the effluent quality consistently meets standards.

[0027] 3. Save on chemical costs: Intelligent monitoring and precise dosing reduce chemical waste and lower processing costs.

[0028] 4. Reduced energy consumption: The optimized stirring design and the ability to adjust the stirring speed according to actual needs prevent over-stirring and effectively reduce energy consumption.

[0029] 5. Simplified operation process: The integrated design and intelligent control reduce manual intervention and complex operation steps, thereby improving work efficiency.

[0030] 6. Enhanced adaptability: It can automatically adjust operating parameters in real time according to different water qualities and treatment requirements, adapting to various complex water treatment scenarios.

[0031] 7. Improved equipment reliability: Reduced connection and coordination issues between independent components, lowered the probability of failure, and extended equipment lifespan.

[0032] 8. Data supports optimization: The large amount of data generated by real-time monitoring can provide a strong basis for subsequent process optimization and equipment improvement. Attached Figure Description

[0033] Figure 1 This is a three-dimensional structural diagram of the stirring device of the present invention.

[0034] Figure 2 This is a front view structural diagram of the stirring device.

[0035] Figure 3 This is a three-dimensional structural diagram of a rotary drug delivery device.

[0036] Figure 4 This is a schematic diagram of an explosion of a rotary drug delivery device.

[0037] The following are the labels in the diagram: 1. Stirring motor, 2. Stirring shaft, 3. Sensor assembly, 4. Medicine tank, 5. Dosing pump, 6. Rotary dosing device, 101. Coupling, 401. Dosing pipe, 402. Dosing port, 203. Stirring blade, 201. Ring platform, 202. Through hole, 601. Rotating sleeve, 603. Support spring, 604. Shaft sleeve. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below.

[0039] Example 1: This invention provides a monitoring device for chemical dosing and stirring in a coagulation tank for tap water treatment. This device combines coagulation tank stirring and chemical dosing operations. It uses sensor component 3 to acquire information about the water in the coagulation tank in real time. Based on the water parameters, the dosage is controlled by an intelligent monitoring system, thereby achieving precise addition of chemicals, improving the coagulation efficiency of the coagulation tank, and reducing the difficulty of subsequent water treatment.

[0040] Specifically, such as Figure 1 As shown, the water treatment coagulation tank dosing and stirring monitoring device of the present invention includes a mixer and a stirring shaft 2. An installation platform is set up on the coagulation tank, and a stirring motor 1 is installed on the installation platform. The stirring motor 1 and the stirring shaft 2 are connected by a coupling 101. The stirring motor 1 drives the stirring shaft 2 to stir the water in the coagulation tank, thereby accelerating the water coagulation process.

[0041] The top of the coagulation tank should be equipped with an inspection port and observation window to facilitate equipment maintenance and observation of its internal operation. The bottom of the tank should be designed in a conical shape to facilitate the accumulation and discharge of sediment.

[0042] like Figure 2 As shown, the water treatment coagulation tank dosing and stirring monitoring device also includes a dosing device and a sensor assembly 3. The dosing device includes a chemical tank 4, a dosing pump 5, a delivery pipe 401, and a rotary delivery device 6. Multiple dosing ports 402 are set along the stirring shaft 2. The dosing pump 5 delivers the chemicals in the chemical tank 4 to each dosing port 402 through the rotary delivery device 6 and the delivery pipe 401, and the chemicals are added to the coagulation tank through the dosing ports 402.

[0043] In order to allow for the addition of chemicals during the rotation of the stirring shaft 2, such as Figure 3 and Figure 4As shown, the rotary drug delivery device 6 is equipped with a rotating sleeve 601, and an annular platform 201 is provided on the stirring shaft 2. The annular platform 201 is an annular platform protruding from the outer wall of the stirring shaft 2. Multiple through holes 202 are evenly arranged on the annular platform 201, and the number of through holes 202 is the same as the number of drug delivery ports 402. The lower end of the through holes 202 is provided with a pipe interface protruding below the annular platform 201 to facilitate the installation of the drug delivery pipe 401. The drug delivery ports 402 are provided with mesh holes to ensure uniform distribution of the drug.

[0044] The rotating sleeve 601 is fitted onto the stirring shaft 2. The lower end of the rotating sleeve 601 is sealed to the ring platform 201, and the upper end of the rotating sleeve 601 is sealed to the stirring shaft 2 above the ring platform 201, so that the stirring shaft 2 can rotate in the rotating sleeve 601. A medicine inlet is provided on the side wall of the rotating sleeve 601, and the medicine inlet is also provided with a corresponding pipe joint to facilitate the connection between the medicine delivery pipe 401 and the medicine tank 4.

[0045] There are several ways to seal the rotating sleeve 601 and the stirring shaft 2 together; this embodiment will describe one of them. For example... Figure 3 As shown, the rotating sleeve 601 has an inwardly extending annular upper and lower baffles at both its upper and lower ends. After the rotating sleeve 601 is fitted onto the stirring shaft 2, the upper surface of the lower baffle and the lower surface of the annular baffle 201 are staggered and fitted together, and a wear-resistant sealing gasket is installed between them to improve the sealing performance. The through hole 202 provided on the annular baffle 201 is located inside the ring of the lower baffle, and the lower baffle and the annular baffle 201 are staggered but do not obstruct the through hole 202. A bushing 604 is installed between the upper baffle and the stirring shaft 2, and the bushing 604 achieves a sealed fit between the upper baffle and the stirring shaft 2.

[0046] The inner diameter of the rotating sleeve 601 is larger than the diameter of the stirring shaft 2, thus forming a temporary storage chamber for the medicine between the rotating sleeve 601 and the stirring shaft 2. The medicine is delivered into the temporary storage chamber through the inlet on the side wall of the rotating sleeve 601. Under the push of the dosing pump 5, the medicine is delivered from the through hole 202 through the dosing pipe 401 to the dosing port 402, thereby adding the medicine to the water.

[0047] A support spring 603 is also installed in the rotating sleeve 601. The support spring 603 is fitted on the shaft of the stirring shaft 2. The lower end of the support spring 603 is located on the ring platform 201, and the upper end of the support spring 603 touches the lower surface of the upper baffle. The support spring 603 is used to press the lower baffle and the ring platform 201 together and to reinforce the rotating sleeve 601.

[0048] The sensor assembly 3 includes a turbidity sensor, a pH sensor, and a temperature sensor. The turbidity sensor is installed at the outlet of the tank, while the pH and temperature sensors are installed at different locations in the middle of the tank. An inspection port and observation window should be provided at the top of the coagulation tank for easy maintenance and observation of its internal operation. The bottom of the tank is designed in a conical shape to facilitate the accumulation and discharge of sediment, and the outlet of the coagulation tank is located in the middle of the bottom.

[0049] The main structure of the coagulation tank should be cylindrical in shape, and the tank body should be made of corrosion-resistant materials, such as high-strength corrosion-resistant alloys, to ensure stable operation over a long period in the water treatment environment. An installation platform should be provided at the center of the coagulation tank for mounting the stirring device.

[0050] The intelligent monitoring system employs an advanced programmable logic controller (PLC) to acquire relevant water parameters from sensor component 3 and control the dosing device to quantitatively add chemicals, ensuring accurate dosage. The system is equipped with a touchscreen display, allowing operators to intuitively view monitoring data, set operating parameters, and check equipment status.

[0051] Furthermore, a flow regulating valve is installed on the drug delivery pipe 401 between the ring platform 201 and the drug dosing port 402. The intelligent monitoring system controls the flow regulating valve to control the drug dosing based on real-time water information.

[0052] In this invention, the stirring motor 1 is a high-efficiency and energy-saving variable frequency motor, capable of flexibly adjusting its speed according to control commands. It is made of solid stainless steel with a special surface treatment to enhance corrosion resistance and wear resistance. The stirring blades 203 are designed as a double-layer structure; the upper blades are responsible for rapidly dispersing the agent into the water, while the lower blades generate strong turbulence to promote thorough mixing of the agent and water. The angle and spacing of the blades are precisely calculated to achieve the best stirring effect. The stirring blades 203 are arc-shaped with serrated edges to enhance the stirring effect. The chemical tank 4 is made of chemically corrosion-resistant polyethylene material and is divided into multiple independent compartments to store different types of coagulants. The dosing pump 5 is a high-precision metering pump, capable of accurately controlling the dosage according to control signals.

[0053] The dosing pipeline is made of corrosion-resistant PVC pipe, and an anti-clogging device is installed inside the pipeline to ensure smooth delivery of the agent.

[0054] The operation process of this invention

[0055] 1. Start the equipment: After the equipment is started, the monitoring agency begins to collect data such as turbidity, pH value and temperature of the water in real time and transmits them to the control agency.

[0056] 2. Data processing and control: The control mechanism calculates the appropriate stirring speed and dosage based on the preset process parameters and the received monitoring data, and sends control commands to the stirring mechanism and the dosing mechanism.

[0057] 3. Stirring process: The stirring mechanism adjusts the motor speed according to the instructions, driving the stirring blades 203 to stir. The upper blades quickly disperse the agent into the water, while the lower blades generate strong turbulence, promoting thorough mixing of the agent and the water.

[0058] 4. Dosing process: The dosing mechanism controls the operating frequency of the dosing pump 5 according to instructions to accurately add chemicals to the coagulation tank. The chemicals are delivered to each dosing port 402 through the rotary dosing device 6 and the dosing pipe 401, and are evenly distributed in the water.

[0059] 5. Real-time monitoring and adjustment: During operation, the monitoring agency continuously monitors the data, and the control agency constantly adjusts the operating parameters to form a dynamic closed-loop control, ensuring that the coagulation effect always reaches the best state.

[0060] 6. Sedimentation and Effluent: The bottom of the coagulation tank is designed in a conical shape to facilitate the accumulation and discharge of sediment. The treated clear water is discharged from the outlet at the bottom of the coagulation tank, and a turbidity sensor monitors the turbidity of the effluent in real time to ensure the treatment effect.

[0061] Precision dosing: Through an intelligent monitoring system and a high-precision dosing pump, precise dosing of chemicals is achieved, avoiding waste and insufficient dosing.

[0062] Uniform mixing: The double-layer mixing blades 203 and the rotating drug delivery device 6 ensure uniform distribution of the agent in the water and improve the coagulation effect.

[0063] Real-time monitoring: Multiple sensors monitor water parameters in real time to ensure the stability and reliability of the coagulation process.

[0064] Energy-efficient and high-performance: The variable frequency motor and optimized stirring design reduce energy consumption and improve processing efficiency.

[0065] Easy maintenance: The top of the pool is equipped with an inspection port and observation window, which facilitates the maintenance of the equipment and the observation of its internal operation.

[0066] Through the above design and operation process, the water treatment coagulation tank dosing and stirring monitoring device of the present invention can significantly improve the working efficiency of the coagulation tank, reduce the difficulty of subsequent water treatment, and realize intelligent and automated water treatment process.

[0067] Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other implementations obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

Claims

1. A monitoring device for chemical dosing and stirring in a coagulation tank for tap water treatment, comprising a stirring motor (1) and a stirring shaft (2), an installation platform is erected on the coagulation tank, the stirring motor (1) is installed on the installation platform, the stirring motor (1) and the stirring shaft (2) are connected by a coupling (101), and further comprising a dosing device and a sensor assembly (3). The dosing device comprises a chemical tank (4), a dosing pump (5), a delivery pipe (401) and a rotary delivery device (6), and multiple dosing ports (402) are provided along the stirring shaft (2). The dosing pump (5) delivers the chemicals in the chemical tank (4) to each dosing port (402) through the rotary delivery device (6) and the delivery pipe (401), respectively, and the chemicals are added to the coagulation tank through the dosing ports (402). Its features are: The sensor assembly (3) includes a turbidity sensor, a pH sensor and a temperature sensor. The turbidity sensor is installed at the outlet of the pool, and the pH sensor and the temperature sensor are installed at different positions in the middle of the pool. The stirring shaft (2) is provided with multiple stirring blades (203). The stirring blades (203) are fixed up and down along the shaft. The stirring blades (203) are designed as a double layer. The upper blades are responsible for quickly dispersing the agent into the water, and the lower blades generate strong turbulence. The rotary drug delivery device (6) includes a rotary sleeve (601), and an annular platform (201) protruding from the outer wall of the stirring shaft (2) is provided on the stirring shaft (2). Multiple through holes (202) are evenly arranged on the annular platform (201), and a pipe interface protruding below the annular platform (201) is provided at the lower end of each through hole (202) to facilitate the installation of the drug delivery pipe (401). The rotary sleeve (601) is fitted onto the stirring shaft (2), and the upper and lower ends of the rotary sleeve (601) are respectively provided with an inwardly extending annular upper baffle and a lower baffle. A connecting rod is installed between the upper baffle and the shaft of the stirring shaft (2). The bushing (604) achieves a sealed fit, the upper surface of the lower baffle and the lower surface of the ring platform (201) are alternately fitted, and a sealing gasket is installed between them; a cavity is left between the rotating sleeve (601) and the stirring shaft (2) as a temporary storage cavity for the medicine, and an inlet is provided on the outer wall of the rotating sleeve (601). The medicine delivered by the medicine tank (4) and the dosing pump (5) is delivered to the temporary storage cavity for the medicine through the inlet. The through hole (202) on the ring platform (201) is connected to the dosing port (402) provided along the stirring shaft (2) through the pipe interface and the dosing pipe (401). A support spring (603) is also installed in the rotating sleeve (601). The support spring (603) is mounted on the shaft of the stirring shaft (2). The lower end of the support spring (603) is located on the ring platform (201), and the upper end of the support spring (603) touches the lower surface of the upper baffle. The support spring (603) is used to press the lower baffle and the ring platform (201) together and to reinforce the rotating sleeve (601).

2. The monitoring device for chemical dosing and stirring in the coagulation tank of tap water treatment according to claim 1, characterized in that, The dosing port (402) is located at the junction of the stirring blade (203) and the shaft. The dosing port (402) is provided with mesh holes to ensure uniform distribution of the agent.

3. The monitoring device for chemical dosing and stirring in the coagulation tank of tap water treatment according to claim 1, characterized in that, The stirring blade (203) is arc-shaped with serrated edges to enhance the stirring effect.

4. The monitoring device for chemical dosing and stirring in the coagulation tank of tap water treatment according to claim 1, characterized in that, It also includes an intelligent monitoring system, which obtains water information in the coagulation tank in real time through sensor components (3). A flow regulating valve is installed on the delivery pipe (401) between the ring platform (201) and the dosing port (402). The intelligent monitoring system controls the flow regulating valve to control the dosing according to the real-time water information.

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