Automatic chemical oxygen demand analyzer for industrial water treatment

Abstract

The utility model belongs to the technical field of environmental monitoring and water treatment, and particularly relates to an automatic chemical oxygen demand analyzer for industrial water treatment, which comprises a support base, two electric push rods, a mounting frame, a driving motor and the like, the two electric push rods are mounted at the top end of the support base side by side, the telescopic end of each electric push rod faces upwards, and the mounting frame is mounted on the support base. The mounting frame is mounted between the telescopic ends of the two electric push rods, the driving motors are distributed in two rows and two columns and mounted on the periphery of the mounting frame, and an output shaft of each driving motor faces downwards. Through cooperative work of an electric push rod, a mounting frame, a driving motor, a stirring rod, a sealing cover, a heating rod and a liquid adding assembly, automation and intelligence of a water quality analysis process are realized, the operation process is simplified, manual intervention is reduced, a more stable and reliable analysis result is provided, an enterprise is helped to better monitor and improve the sewage treatment process, and the sewage treatment efficiency is improved. And a higher environmental protection standard is achieved.

Description

An automated chemical oxygen demand analyzer for industrial water treatment Technical Field

[0001] This utility model belongs to the field of environmental monitoring and water treatment technology, and in particular relates to an automated chemical oxygen demand analyzer for industrial water treatment. Background Technology

[0002] With the rapid development of the industrial sector, the discharge of industrial wastewater is increasing daily, making its treatment and monitoring a crucial aspect of environmental protection. By employing chemical or optical analysis methods, it is possible to rapidly and accurately determine the content of organic pollutants in water samples, providing indispensable data support for industrial water treatment processes. With this precise data, enterprises can optimize their wastewater treatment processes, effectively reduce pollution emissions, and thus actively fulfill their social responsibility for environmental protection while achieving economic benefits.

[0003] Traditional industrial water oxygen demand analysis procedures have many drawbacks. The process is extremely cumbersome and inefficient. The entire analysis process mainly relies on operators manually using simple tools such as test tanks. Operators must strictly follow the established steps, first adding the water sample and various reagents to the test tank in sequence, and then performing a series of operations such as stirring, heating, and cooling. This process is time-consuming and is highly susceptible to human interference, such as varying levels of operator skill and difficulty in controlling the uniformity of stirring. These factors can lead to certain errors in the analysis results, affecting the reliability and accuracy of the analysis.

[0004] Therefore, there is a particular need for an automated chemical oxygen demand (COD) analyzer for industrial water treatment to solve the above problems. Summary of the Invention

[0005] To overcome the shortcomings of traditional industrial water oxygen demand analysis processes, such as being cumbersome and inefficient, relying on manual operation, and being easily affected by human factors leading to errors in results, this utility model provides an automated chemical oxygen demand analyzer for industrial water treatment.

[0006] This utility model is achieved through the following technical means: An automated chemical oxygen demand (COD) analyzer for industrial water treatment includes a support base, electric push rods, a mounting frame, a drive motor, a stirring rod, a sealing cap, heating rods, a liquid addition assembly, and glass test tanks. Two electric push rods are installed side by side on the top of the support base, with the telescopic end of each electric push rod facing upwards. The mounting frame is installed between the telescopic ends of the two electric push rods. Multiple drive motors are arranged in two rows and columns around the periphery of the mounting frame, with the output shaft of each drive motor facing downwards. Each stirring rod is fixed to the output shaft of each drive motor via a coupling. Each sealing cap is installed at the bottom of each drive motor and rotates with the output shaft of the drive motor. Multiple heating rods arranged in a circular array form a group, and there are multiple groups. Each group of heating rods is installed at the bottom of each sealing cap. The liquid addition assembly is set on the support base. Multiple glass test tanks, with the same number as the number of sealing caps, are placed on the support base, and the multiple sealing caps are respectively located directly above the multiple glass test tanks.

[0007] Optionally, the liquid filling assembly includes a support rod, an electric slide rail, an electric slider, a rotary motor, a mounting rod, and a liquid injection pipe. The Y-shaped support rod is fixed to the top of the support base. Two electric slide rails are installed on the upper end of the support rod in a parallel arrangement. Each electric slider is slidably mounted on each electric slide rail. Two rotary motors are installed on each electric slider in a parallel arrangement, with the output shaft of each rotary motor facing outward. Each mounting rod is fixed to the output shaft of each rotary motor via a coupling. Each liquid injection pipe is fixed to each mounting rod in an interlaced manner, with its inlet end adopting a hemispherical structure and its outlet end adopting an inclined structure.

[0008] Optionally, it also includes a compression airbag, each compression airbag being fixed to each injection tube and connected to the injection channel of the injection tube.

[0009] Optionally, it also includes clamping plates and elastic elements. Two clamping plates with their clamping surfaces facing each other form a group, and there are multiple groups. All groups of clamping plates are slidably mounted on the support base. Multiple glass test jars are located between the multiple groups of clamping plates. Multiple elastic elements arranged in a rectangular array form a group, and there are multiple groups. Each group of elastic elements is fixed between each group of clamping plates and the support base.

[0010] Optionally, the clamp is a flexible clamp.

[0011] Optionally, the upper end of the clamp has an outward-facing arc shape.

[0012] The beneficial effects of this utility model are: by using the coordinated work of electric push rod, mounting frame, drive motor, stirring rod, sealing cover, heating rod and liquid addition assembly, the water quality analysis process is automated and intelligent, the operation process is simplified, manual intervention is reduced, more stable and reliable analysis results are provided, and enterprises are helped to better monitor and improve their wastewater treatment process to achieve higher environmental protection standards.

[0013] By using a compression bladder design, a stable airflow can be blown into the injection channel of the injection tube simply by pressing the compression bladder at the appropriate time. The airflow pressure can effectively promote the flow of residual reagents out of the injection tube, avoiding possible deviations in analytical results due to reagent residues, and further ensuring the accuracy and reliability of analytical results.

[0014] By adding clamps and elastic elements, it is possible to ensure that the glass test jar remains firmly clamped during the analysis process, effectively avoiding analytical errors that may be caused by shaking or displacement of the glass test jar, and providing strong assurance for the accuracy of the analytical results. Attached Figure Description

[0015] Figure 1 is a three-dimensional structural diagram of this utility model.

[0016] Figure 2 is a three-dimensional structural diagram of the drive motor, stirring rod, and sealing cap of this utility model.

[0017] Figure 3 is a three-dimensional structural diagram of the components of this utility model, including the electric slide rail, electric slider, and rotary motor.

[0018] Figure 4 is a partial cross-sectional view of the clamping plate component of this utility model.

[0019] Explanation of reference numerals in the attached drawings: 1. Support base, 2. Electric push rod, 3. Mounting bracket, 4. Drive motor, 5. Stirring rod, 6. Sealing cap, 7. Heating rod, 8. Support rod, 9. Electric slide rail, 10. Electric slider, 11. Rotary motor, 12. Mounting rod, 13. Liquid injection pipe, 14. Compressed air bladder, 15. Clamping plate, 151. Elastic element, 16. Glass test tank. Detailed Implementation

[0020] The following description is only a preferred embodiment of the present invention and does not limit the scope of protection of the present invention.

[0021] Example: An automated chemical oxygen demand (COD) analyzer for industrial water treatment, as shown in Figures 1-4, includes a support base 1, electric actuators 2, a mounting frame 3, a drive motor 4, a stirring rod 5, a sealing cover 6, a heating rod 7, a liquid addition assembly, and a glass test tank 16. Two electric actuators 2 are mounted side-by-side on the top of the support base 1, with the extension end of each electric actuator 2 facing upwards. The mounting frame 3 is bolted between the extension ends of the two electric actuators 2. Four drive motors 4 are arranged in two rows and two columns, bolted to the periphery of the mounting frame 3, with the output shaft of each drive motor 4 facing downwards. Each stirring rod 5... The stirring rod 5 is connected to the output shaft of each drive motor 4 via a coupling. Each sealing cover 6 is connected to the lower part of each drive motor 4 by bolts and rotates with the output shaft of the drive motor 4. Four heating rods 7 arranged in a ring array form a group, and there are four groups in total. Each group of heating rods 7 is connected to the bottom end of each sealing cover 6 by bolts. The liquid addition assembly is set on the support base 1. Four glass test jars 16, which are the same number as the number of sealing covers 6, are placed on the support base 1, and the four sealing covers 6 are respectively located directly above the four glass test jars 16, ensuring that the sealing covers 6 can stably cover the corresponding glass test jars 16.

[0022] As shown in Figures 1 and 3, the liquid filling assembly includes a support rod 8, an electric slide rail 9, an electric slider 10, a rotary motor 11, a mounting rod 12, a liquid injection pipe 13, and a compression airbag 14. The Y-shaped support rod 8 is welded to the geometric center of the top of the support base 1. Two electric slide rails 9 are arranged side-by-side on the upper end of the support rod 8. Each electric slider 10 is slidably mounted on each electric slide rail 9. Two rotary motors 11 are arranged side-by-side on each electric slider 10, with the output shaft of each rotary motor 11 facing outwards. Each mounting rod 12 is connected to each rotary motor 10 via a coupling. On the output shaft of the machine 11, each injection tube 13 is bonded to each mounting rod 12 in an interlocking manner. Its inlet end adopts a hemispherical structure. The hemispherical shape has a large surface area, which can increase the contact area between the reagent and the inlet end of the injection tube 13, so that the reagent can flow into the injection tube 13 more smoothly and reduce the resistance when the reagent flows. The outlet end of each injection tube 13 adopts an inclined structure, which can make the reagent flow out at a certain angle and direction, and can also reduce the residue of reagent at the outlet end. Each compression air bag 14 is connected to each injection tube 13 by welding and connects to the injection channel of the injection tube 13.

[0023] As shown in Figures 1 and 4, the system also includes clamping plates 15 and elastic elements 151. Two clamping plates 15 with opposing clamping surfaces form a group, and there are four groups in total. All four groups of clamping plates 15 are slidably mounted on the support base 1. Four glass test jars 16 are located between the four groups of clamping plates 15. The clamping plates 15 are flexible clamping plates made of flexible material. When clamping the glass test jars 16, they can deform to conform to the contour of the glass test jars 16, evenly distributing the clamping force and preventing excessive local pressure that could cause the glass test jars 16 to break. Furthermore, the clamping plates... The upper end of 15 has an outward-facing arc-shaped structure. This arc-shaped structure can achieve initial positioning through curved surface contact when the glass test tank 16 is placed in, and use curvature to guide the glass test tank 16 to slide along a preset path between each set of clamping plates 15. Four elastic elements 151 arranged in a rectangular array form a set, and there are four sets in total. Each set of elastic elements 151 is connected between each set of clamping plates 15 and the support base 1 by welding, providing elastic support and restoring force for each set of clamping plates 15. The elastic elements 151 are strong springs.

[0024] Initially, the telescopic end of the electric push rod 2 is fully extended, so that the mounting bracket 3 is in the highest position and the elastic element 151 is in a compressed and energy-storing state, applying an inward pre-tightening force to the clamping plate 15 to ensure that the clamping plate 15 can firmly clamp the glass test jar 16 placed on the support base 1.

[0025] When water quality analysis is required, the operator first pours the water sample to be tested into each glass test vessel 16 in sequence, taking care to avoid splashing or contamination during the pouring process. Then, a certain amount of mercuric sulfate solution, potassium dichromate solution, and silver sulfate-sulfuric acid solution are added to each glass test vessel 16 in sequence. After each reagent is added, the rotary motor 11 is started. By controlling the rotation angle of the output shaft of the rotary motor 11, the mounting rod 12 is rotated to a suitable angle, and the angle of the injection tube 13 is adjusted to ensure that the reagents are distributed in sections within the glass test vessel 16 each time a different reagent is injected. This effectively avoids premature chemical reactions between the reagents and ensures the safety of each reagent. In subsequent analysis, it can function according to the preset reaction sequence to improve the accuracy of analysis. After the angle adjustment is completed, the rotary motor 11 is turned off in time to lock the position of the injection tube 13. At the same time, after each reagent is added, the compression bag 14 is pressed in time to blow a stable airflow into the injection channel of the injection tube 13. The airflow pressure is used to make the residual reagent flow out from the injection tube 13. After adding the above three reagents, the electric slide rail 9 is activated to control the electric slider 10 to move outward. The injection tube 13 moves outward synchronously until it is completely offset from the glass test tank 16. The electric slide rail 9 is turned off to prevent the injection tube 13 from interfering with other components in subsequent operations.

[0026] Subsequently, the operator activates the electric push rod 2, controlling its telescopic end to retract, causing the mounting frame 3 and all its components to descend smoothly. When the sealing cover 6 descends to the preset height and tightly covers the glass test tank 16, the electric push rod 2 is immediately turned off to lock the position of the sealing cover 6. At this time, the stirring rod 5 and the heating rod 7 have accurately entered the glass test tank 16. Then, the drive motor 4 is activated, and its output shaft drives the stirring rod 5 to start rotating. Through stirring, the water sample and the three added reagents are fully mixed to ensure uniform reaction. At the same time, the heating rod 7 is activated to raise the internal temperature of the glass test tank 16 to the preset value (e.g., 150 degrees Celsius). When the temperature reaches the preset value, the heating rod 7 automatically switches to constant temperature mode to maintain the temperature for constant temperature digestion reaction, thereby accelerating the oxidative decomposition of organic matter in the water sample.

[0027] After the digestion time is over, the operator turns off the drive motor 4 and the heating rod 7, stops the stirring and heating process, and restarts the electric push rod 2, controls its extension end to extend, and drives the mounting frame 3 and all the components set on it to rise smoothly until it returns to the initial height, so that the sealing cover 6 is removed from the glass test tank 16. After turning off the electric push rod 2, wait for the temperature of the glass test tank 16 to cool down to a safe range.

[0028] After waiting for the glass test tank 16 to cool down, restart the electric slide rail 9 and control the electric slider 10 to move inward. The injection tube 13 moves inward synchronously until it is aligned with the glass test tank 16. At this time, ferrous ammonium sulfate reagent is added drop by drop into the glass test tank 16. The operator closely observes the reaction and evaluates the oxygen demand of the water sample by analyzing the reaction phenomena (such as color change) and records the relevant data.

[0029] Finally, the operator removes the glass test jar 16. At this time, the elastic element 151 returns to its original state, causing the clamping plate 15 to move inward and reset under the action of elastic force. After cleaning the glass test jar 16, it is placed back on the support base 1. During the placement process, the glass test jar 16 first contacts the upper end of the clamping plate 15 and gradually squeezes the clamping plate 15 to move outward. At this time, the elastic element 151 is compressed. After the glass test jar 16 is completely placed, the elastic element 151 remains compressed, continuously applying a stable inward pre-tightening force to the clamping plate 15 to ensure that the clamping plate 15 can tightly and stably clamp the glass test jar 16 again, preparing for the next analysis operation.

[0030] It is important to note that during the analysis, the proportions of mercuric sulfate solution, potassium dichromate solution, silver sulfate-sulfuric acid solution, and ferrous ammonium sulfate reagent added to each glass test vessel 16 vary. This variation is based on rigorous scientific principles and extensive experimental experience. Different reagent ratios can have multifaceted and critical impacts on the analysis process, fully demonstrating the diversity and complexity of the analytical structure. In addition, before each water sample analysis, glass test vessel 16 must be cleaned to remove any residues, thereby ensuring the accuracy and reliability of the analytical results.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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. An automated chemical oxygen demand (COD) analyzer for industrial water treatment, characterized in that, The system includes a support base (1), electric push rods (2), a mounting bracket (3), a drive motor (4), a stirring rod (5), a sealing cap (6), a heating rod (7), a liquid addition assembly, and a glass test tank (16). Two electric push rods (2) are installed side-by-side on the top of the support base (1), with the telescopic ends of each electric push rod (2) facing upwards. The mounting bracket (3) is installed between the telescopic ends of the two electric push rods (2). Multiple drive motors (4) are arranged in two rows and columns around the perimeter of the mounting bracket (3), with the output shaft of each drive motor (4) facing downwards. Each stirring rod (5) 5) The heating rods (7) are fixed to the output shaft of each drive motor (4) by a coupling. Each sealing cover (6) is installed at the bottom of each drive motor (4) and rotates with the output shaft of the drive motor (4). Multiple heating rods (7) arranged in a ring array are grouped together. There are multiple groups. Each group of heating rods (7) is installed at the bottom of each sealing cover (6). The liquid addition assembly is set on the support base (1). Multiple glass test tanks (16) with the same number as the sealing covers (6) are placed on the support base (1), and the multiple sealing covers (6) are located directly above the multiple glass test tanks (16).

2. The automated chemical oxygen demand (COD) analyzer for industrial water treatment according to claim 1, characterized in that, The liquid filling assembly includes a support rod (8), an electric slide rail (9), an electric slider (10), a rotary motor (11), a mounting rod (12), and a liquid injection pipe (13). The Y-shaped support rod (8) is fixed to the top of the support base (1). Two electric slide rails (9) are installed on the upper end of the support rod (8) in a parallel arrangement. Each electric slider (10) is slidably set on each electric slide rail (9). Two rotary motors (11) are installed on each electric slider (10) in a parallel arrangement. The output shaft of each rotary motor (11) faces outward. Each mounting rod (12) is fixed to the output shaft of each rotary motor (11) through a coupling. Each liquid injection pipe (13) is fixed to each mounting rod (12) in an interlocking manner. Its liquid inlet end adopts a hemispherical structure, and its liquid outlet end adopts an inclined structure.

3. The automated chemical oxygen demand (COD) analyzer for industrial water treatment according to claim 2, characterized in that, It also includes a compression airbag (14), each compression airbag (14) being fixed to each injection tube (13) and connected to the injection channel of the injection tube (13).

4. An automated chemical oxygen demand (COD) analyzer for industrial water treatment according to claim 3, characterized in that, It also includes clamping plates (15) and elastic elements (151). Two clamping plates (15) with their clamping surfaces facing each other form a group, and there are multiple groups in total. All groups of clamping plates (15) are slidably set on the support base (1). Multiple glass test jars (16) are located between the multiple groups of clamping plates (15). Multiple elastic elements (151) arranged in a rectangular array form a group, and there are multiple groups in total. Each group of elastic elements (151) is fixed between each group of clamping plates (15) and the support base (1).

5. An automated chemical oxygen demand (COD) analyzer for industrial water treatment according to claim 4, characterized in that, The clamp (15) is a flexible clamp.

6. An automated chemical oxygen demand (COD) analyzer for industrial water treatment according to claim 5, characterized in that, The upper end of the clamp (15) has an outward-facing arc structure.

Images