A precise dosing device for smelting circulating water treatment

Abstract

This utility model discloses a precision dosing device for smelting circulating water treatment, relating to the field of smelting circulating water treatment technology. The device includes a support frame with multiple reagent storage tanks at the top. Each reagent storage tank has a delivery pipe at its bottom. A mixing cylinder is located inside the support frame. Several delivery pipes are connected to the inlet end of the mixing cylinder. A reagent delivery pump is connected between the delivery pipes. An inlet pipe is connected to one side of the mixing cylinder, and a transfer pipe is connected to the bottom of the mixing cylinder. A mixed liquid delivery pump is connected to the transfer pipe, and the outlet end of the mixed liquid delivery pump is connected to a metering and dosing mechanism. This utility model can achieve precise dosing of multiple reagents mixed in proportion, and can also switch to a single-reagent independent dosing mode after rinsing the mixing cylinder. It combines the synergistic effect of compound treatment with the flexibility of individual control, improving the accuracy, automation level, and adaptability of reagent dosing in smelting circulating water systems.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical circulating water treatment technology, and in particular to a precision dosing device for metallurgical circulating water treatment. Background Technology

[0002] In the circulating water treatment systems of metallurgical enterprises, the water quality is characterized by high hardness, high temperature, high suspended solids, and a tendency to scale, corrode, and breed microorganisms. Therefore, it is typically necessary to add multiple water treatment agents (such as scale inhibitors, corrosion inhibitors, bactericides, and flocculants) to maintain stable system operation. Currently, most enterprises still use manual or semi-automatic methods to add single agents in stages. This results in problems such as inaccurate agent ratios, uneven dosing, delayed response, and significant agent waste. It is difficult to adapt to the dynamic changes in water quality, leading to unstable treatment effects, increased risk of equipment corrosion and scaling, and persistently high operating costs.

[0003] To improve processing efficiency, some systems have introduced automatic dosing devices. However, existing technologies are mostly limited to the quantitative addition of a single agent, or although they have the function of mixing multiple agents, they are difficult to switch flexibly between the two modes of "multi-agent synergistic mixing and addition" and "independent and precise addition of a single agent", which makes it difficult to meet the needs of rapid and individual enhanced addition of specific agents under complex working conditions. Utility Model Content

[0004] This utility model provides a precision dosing device for smelting circulating water treatment, including a support frame. The top of the support frame is provided with multiple reagent storage tanks. Each reagent storage tank is provided with a conveying pipe at its bottom. The inside of the support frame is provided with a mixing cylinder. The liquid inlet end of the top of the mixing cylinder is connected to several conveying pipes. A liquid delivery pump is connected between the first and second conveying pipes. One side of the mixing cylinder is connected to a liquid inlet pipe. The bottom of the mixing cylinder is connected to a transfer pipe. A mixed liquid delivery pump is connected to the transfer pipe. The liquid outlet end of the mixed liquid delivery pump is connected to a metering dosing mechanism.

[0005] Preferably, each of the conveying pipes is provided with a first control valve and a first flow meter.

[0006] Preferably, the inlet of the inlet pipe is connected to the outlet of the liquid transfer pump, and the liquid transfer pump draws liquid from the dilution tank.

[0007] Preferably, the inlet pipe is equipped with a flow regulating valve and a second flow meter, with the second flow meter located downstream of the flow regulating valve.

[0008] Preferably, the metering and dosing mechanism includes an extension pipe connected to a mixed liquid delivery pump, with multiple metering branch pipes connected in parallel at the outlet end of the extension pipe, the outlets of the multiple metering branch pipes being connected to the inlets of multiple metering pumps respectively, the outlets of the metering pumps being connected to a connecting tube, and a second control valve installed on each metering branch pipe.

[0009] Preferably, a check valve is provided on the connecting tube.

[0010] Preferably, a drain pipe is provided on the lower side of the liquid outlet end of the extension tube, and a valve is provided on the drain pipe.

[0011] Preferably, a stirring paddle is rotatably installed inside the mixing cylinder, and the stirring paddle is driven by a motor.

[0012] Preferably, an annular spray element is provided at the top of the interior of the mixing cylinder, and the water inlet pipe of the spray element extends to the outside of the mixing cylinder.

[0013] Preferably, the lower side of the spraying component is provided with a plurality of vertical nozzles, and the outer side of the spraying component is provided with a plurality of inclined nozzles.

[0014] This utility model provides a precision dosing device for smelting circulating water treatment, which, compared with the prior art: 1. This utility model, by configuring multiple independent reagent storage tanks and combining them with a first control valve and a first flow meter on each delivery pipe, achieves precise metering and controllable delivery of different types of reagents. Various reagents can be delivered to the mixing drum in a set proportion according to the treatment requirements for thorough mixing to form a composite solution. The mixed solution is then pumped to the metering and dosing mechanism via a transfer pipe. Through multiple parallel metering branch pipes, metering pumps, and connecting pipes, branching, quantitative, and precise dosing is achieved. This structure not only ensures the stability and uniformity of the synergistic effect of multi-component reagents but also significantly improves the automation level and control accuracy of reagent dosing, effectively meeting the dynamic control requirements of the smelting circulating water system for complex water quality treatment.

[0015] 2. This utility model has the ability to independently add a single agent, which improves the flexibility and applicability of the system. By installing a spray device at the top of the mixing drum that can be connected to an external water source, the inside of the mixing drum can be thoroughly rinsed after the mixing and dosing operation is completed to remove residual liquid and avoid cross-contamination. After cleaning, the system can switch to single agent operation mode, only opening the delivery path corresponding to the target agent to directly deliver it to the metering and dosing mechanism. After being accurately metered by the metering pump, it is put into the circulating water system through an independent connecting pipe. This function enables the device to achieve multi-agent synergistic treatment and flexibly execute the precise dilution and dosing of a single agent according to the actual working conditions, which greatly enhances the system's response capability and operational reliability to different water quality problems. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model; Figure 2 This is a second schematic diagram of the overall structure of an embodiment of the present utility model; Figure 3 This is a partial schematic diagram of the overall structure of an embodiment of the present utility model; Figure 4 This is a schematic diagram of the mixing cylinder structure according to an embodiment of the present invention; Figure 5 This is an embodiment of the present utility model. Figure 4 Top view of the structure; Figure 6 This is an embodiment of the present utility model. Figure 5 Schematic diagram of cross section along AA; Figure 7 This is a schematic diagram of the spray component structure according to an embodiment of the present utility model.

[0018] Figure label: 1. Support frame; 2. Drug storage tank; 3. Delivery pipe one; 4. First control valve; 5. First flow meter; 6. Mixing cylinder; 7. Delivery pipe two; 8. Drug delivery pump; 9. Inlet pipe; 10. Flow regulating valve; 11. Second flow meter; 12. Liquid delivery pump; 13. Diluent tank; 14. Transfer pipe; 15. Mixed liquid delivery pump; 16. Extension pipe; 17. Drain pipe; 18. Valve; 19. Metering branch pipe; 20. Second control valve; 21. Metering pump; 22. Connecting drug pipe; 23. Check valve; 24. Motor; 25. Agitator; 26. Spraying components. Detailed Implementation

[0019] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0020] Please refer to Figures 1-7 This utility model provides a precision dosing device for smelting circulating water treatment, including a support 1. Multiple reagent storage tanks 2 are mounted on the top of the support 1. Each reagent storage tank 2 stores a type of circulating water treatment reagent, such as a scale inhibitor, bactericide, or flocculant. A delivery pipe 3 is located at the bottom of each reagent storage tank 2 for discharging the reagent.

[0021] Each delivery pipe 3 is equipped with a first control valve 4 and a first flow meter 5. The first control valve 4 is used to control the opening and closing of the drug passage, and the first flow meter 5 is used to monitor the delivery flow rate of the drug in real time to achieve accurate measurement. Each delivery pipe 3 is connected to the input end of the drug delivery pump 8, and the output end of the drug delivery pump 8 is connected to the second delivery pipe 7. The other end of the second delivery pipe 7 is connected to the liquid inlet at the top of the mixing cylinder 6. By controlling the opening state of the first control valve 4 corresponding to different drugs and the operating parameters of the drug delivery pump 8, multiple drugs can be delivered to the mixing cylinder 6 in a set ratio.

[0022] A liquid inlet pipe 9 is provided on one side of the mixing cylinder 6 for introducing dilution water. The inlet of the liquid inlet pipe 9 is connected to the outlet of the liquid transfer pump 12. The liquid transfer pump 12 is used to draw softened water or deionized water from the dilution water tank 13 as a dilution medium. A flow regulating valve 10 and a second flow meter 11 are sequentially installed on the liquid inlet pipe 9. The flow regulating valve 10 is used to regulate the amount of dilution water added, and the second flow meter 11 is located downstream of the flow regulating valve 10 and is used to accurately measure the actual amount of dilution water entering the mixing cylinder 6.

[0023] The mixing cylinder 6 is equipped with a stirring paddle 25, which is driven to rotate by a motor 24 to fully mix the various agents and dilution water entering the mixing cylinder 6, ensuring the formation of a uniform and stable composite solution.

[0024] The mixing cylinder 6 has an annular spray nozzle 26 at its top. The water inlet pipe of the spray nozzle 26 extends to the outside of the mixing cylinder 6 and can be connected to an external clean water source such as high-pressure water or cleaning fluid. The spray nozzle 26 has multiple vertically downward nozzles on its lower side and multiple inclined nozzles on its outer periphery. It can thoroughly rinse the inner wall of the mixing cylinder 6 in cleaning mode, effectively remove residual chemicals, and prevent cross-contamination between different chemicals.

[0025] The bottom of the mixing cylinder 6 is provided with a transfer pipe 14, and a mixing liquid delivery pump 15 is installed on the transfer pipe 14. The mixed liquid flows into the transfer pipe 14 under the action of gravity and is delivered to the metering and dosing mechanism by the mixing liquid delivery pump 15.

[0026] The metering and dosing mechanism includes an extension pipe 16 connected to the outlet of the mixed liquid transfer pump 15. Multiple metering branch pipes 19 are connected in parallel at the outlet of the extension pipe 16. Each metering branch pipe 19 is connected to the inlet of a metering pump 21. The metering pump 21 is a high-precision diaphragm or plunger metering pump, which can achieve precise control of small flow rates. The outlet of each metering pump 21 is connected to an independent connecting medicine pipe 22 for adding medicine into the circulating water system pipeline. Each metering branch pipe 19 is equipped with a second control valve 20 for controlling the opening and closing of the branch.

[0027] A check valve 23 is installed on the connecting pipe 22 to prevent water in the circulating water system from flowing back into the metering pump 21 or the transfer system, thus ensuring equipment safety.

[0028] To facilitate system cleaning and maintenance, a drain pipe 17 is installed below the liquid outlet of the extension pipe 16. A valve 18 is installed on the drain pipe 17. When it is necessary to clean the transfer pipe 14 and the extension pipe 16, the main drain valve (not shown) at the bottom of the mixing drum 6 can be closed, the valve 18 can be opened, cleaning water can be introduced, and the sewage can be discharged through the drain pipe 17 to achieve online cleaning of the conveying pipeline.

[0029] This device is also equipped with a control system (not shown). The liquid level sensor is installed inside the chemical storage tank 2, and its signal output is connected to the control system to monitor the remaining chemical level and trigger a low liquid level alarm. The signal input of the control system is connected to various flow meters, liquid level sensors and other detection elements, and the output is connected to various control valves, pumps and motors 24. It can automatically adjust the type, ratio and flow rate of chemical dosing according to the feedback data of the online water quality monitoring system to achieve intelligent and precise chemical dosing.

[0030] In summary, the control system opens the first control valve 4 of the corresponding agent storage tank 2 according to the set ratio based on the online water quality monitoring data. The agent is sent into the mixing cylinder 6 through the first delivery pipe 3 and the second delivery pipe 7 via the agent delivery pump 8. At the same time, the liquid delivery pump 12 injects water from the dilution tank 13 into the mixing cylinder 6 through the inlet pipe 9. The flow regulating valve 10 and the second flow meter 11 regulate and monitor the water volume. The motor 24 drives the stirring paddle 25 to mix. The mixed liquid flows into the transfer pipe 14 and is delivered to the extension pipe 16 by the mixed liquid delivery pump 15. The second control valve 20 is opened, and the metering pump 21 accurately adds the agent through the connecting drug pipe 22. The check valve 23 prevents backflow. During cleaning, the spray element 26 is turned on to rinse the mixing cylinder 6 with water, and the valve 18 on the drain pipe 17 is opened to discharge the sewage. A single agent dosing mode can be switched.

[0031] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A precision dosing device for smelting circulating water treatment, characterized in that: Includes a support (1), the top of which is provided with multiple drug storage tanks (2), each drug storage tank (2) is provided with a first delivery pipe (3) at the bottom, the inside of the support (1) is provided with a mixing cylinder (6), the liquid inlet end of the top of the mixing cylinder (6) is connected to several second delivery pipes (7), a drug delivery pump (8) is connected between the first delivery pipe (3) and the second delivery pipe (7), a liquid inlet pipe (9) is connected to one side of the mixing cylinder (6), a transfer pipe (14) is connected to the bottom of the mixing cylinder (6), a mixed liquid delivery pump (15) is connected to the transfer pipe (14), and the liquid outlet end of the mixed liquid delivery pump (15) is connected to the metering and dosing mechanism.

2. The precision dosing device for smelting circulating water treatment according to claim 1, characterized in that: Each of the aforementioned delivery pipes (3) is equipped with a first control valve (4) and a first flow meter (5).

3. The precision dosing device for smelting circulating water treatment according to claim 2, characterized in that: The inlet of the inlet pipe (9) is connected to the outlet of the liquid transfer pump (12), and the liquid transfer pump (12) draws liquid from the dilution tank (13).

4. The precision dosing device for smelting circulating water treatment according to claim 3, characterized in that: The inlet pipe (9) is equipped with a flow regulating valve (10) and a second flow meter (11), which is located downstream of the flow regulating valve (10).

5. The precision dosing device for smelting circulating water treatment according to claim 4, characterized in that: The metering and dosing mechanism includes an extension pipe (16) connected to a mixed liquid delivery pump (15). Multiple metering branches (19) are connected in parallel at the outlet of the extension pipe (16). The outlets of the multiple metering branches (19) are connected to the inlets of multiple metering pumps (21). A connecting tube (22) is connected to the outlet of the metering pump (21). A second control valve (20) is installed on each metering branch (19).

6. The precision dosing device for smelting circulating water treatment according to claim 5, characterized in that: A check valve (23) is provided on the connecting tube (22).

7. The precision dosing device for smelting circulating water treatment according to claim 6, characterized in that: A drain pipe (17) is provided on the lower side of the liquid outlet end of the extension pipe (16), and a valve (18) is provided on the drain pipe (17).

8. The precision dosing device for smelting circulating water treatment according to claim 1, characterized in that: The mixing cylinder (6) is equipped with a rotating stirring paddle (25), which is driven by a motor (24).

9. The precision dosing device for smelting circulating water treatment according to claim 8, characterized in that: The top of the inside of the mixing cylinder (6) is provided with an annular spray element (26), and the water inlet pipe of the spray element (26) extends to the outside of the mixing cylinder (6).

10. The precision dosing device for smelting circulating water treatment according to claim 9, characterized in that: The spraying component (26) has several vertical nozzles on its lower side and several inclined nozzles on its outer side.

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