A device for dispensing caustic into an acid wash tower

Abstract

The utility model relates to industrial waste gas treatment technical field, concretely relates to a kind of pickling tower alkali dispensing device, including collecting tank, the top of collecting tank is equipped with two main and auxiliary dispensing barrels, the top of dispensing barrel is equipped with solid aggregate bin, installation support is arranged between two dispensing barrels, the side of installation support is equipped with control cabinet, the other side of installation support is equipped with two liquid outlet pipelines, the liquid outlet pipeline is connected with backflushing pipeline, and the dispensing barrel is connected with the medicine delivery pipeline with multiple control valves between it.The utility model is provided with backflushing structure, when the liquid outlet pipeline is blocked, by connecting the water inlet pipeline interface at its bottom, and closing the side switch at the top of liquid outlet pipeline, backflushing is carried out to liquid outlet pipeline, waste liquid flows out through drain pipeline after washing, ensure that liquid can be smoothly transported, ensure that the internal medicine of dispensing barrel can be discharged in time.

Description

Technical Field

[0001] This utility model relates to the field of industrial waste gas treatment technology, specifically to an alkali addition and dosing device for an acid washing tower. Background Technology

[0002] Pickling towers treat acidic waste liquid by preparing corresponding alkaline agents. The agents are mixed with the acidic waste liquid to neutralize it and achieve the purpose of treating the acidic waste.

[0003] In the traditional process of preparing alkaline agents, the solid agent needs to be poured into the preparation tank manually and water needs to be added manually to achieve the purpose of preparing the agent. During the preparation process, a lot of solid sodium hydroxide is wasted. Excessive sodium hydroxide can cause crystals to precipitate in the pipeline, block the pipeline, and cause pump failure. At the same time, traditional dosing devices cannot automatically replenish the agent, which can easily lead to pump dry burning and damage, resulting in the need for frequent inspection and preparation.

[0004] Therefore, it is necessary to invent an alkali addition and dosing device for an acid washing tower to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide an alkali addition and preparation device for an acid washing tower, which solves the problem that sodium hydroxide crystallizes and precipitates in the pipeline during the preparation process, causing pipeline blockage.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A alkali addition and dosing device for an acid washing tower includes a collection tank, with two dosing tanks (main and auxiliary) mounted on the top of the collection tank. A solid aggregate bin is mounted on the top of each dosing tank. A mounting bracket is provided between the two dosing tanks. A control cabinet is mounted on one side of the mounting bracket, and two outlet pipes are mounted on the other side of the mounting bracket. The outlet pipes are connected to a backwashing pipe, and a dosing pipeline with multiple control valves connects the dosing tanks.

[0007] As a preferred embodiment of this utility model, a hybrid motor is provided at the top of the medicine mixing tank, and a pH meter, a thermometer, and a level gauge extending into the inside of the medicine mixing tank are also provided at the top of the medicine mixing tank.

[0008] As a preferred embodiment of this utility model, the control valves include control valve one, control valve two, and control valve three installed on the drug delivery pipeline. The liquid outlet pipelines are located on both sides of control valve two and are connected to water pumps. The inlet of the water pump is connected to a pump inlet pipeline that communicates with the drug delivery pipeline, and the outlet of the water pump is connected to a pump outlet pipeline that communicates with the liquid outlet pipeline. Control valve one and control valve three are located on the side where the water pump connects to the drug preparation tank.

[0009] As a preferred embodiment of this utility model, the backwashing pipe includes an inlet pipe interface located at the bottom of the outlet pipe, an external pipe interface is provided at the top of the outlet pipe, and a drain pipe is installed in the middle of the outlet pipe.

[0010] As a preferred embodiment of this utility model, multiple regulating switches are installed on the liquid outlet pipe, and a pressure gauge is installed on one side of the drain pipe.

[0011] As a preferred embodiment of this utility model, a vent valve is connected to one side of the bottom of the medicine mixing tank, and an electric discharge valve for controlling material discharge is provided at the bottom of the solid collection bin.

[0012] As a preferred embodiment of this utility model, a liquid level observation tube is installed on the side wall of the medicine dispensing tank, and the liquid level observation tube is made of transparent tubing.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows: This invention employs two mixing tanks (main and auxiliary) and two water pumps, with multiple control valves installed on the delivery pipeline. During normal operation, control valve two in the middle is closed, and the mixing tank is pumped out by the adjacent water pump to neutralize acidic waste liquid. When the water pump near the left mixing tank malfunctions, control valve three near the right closes, and control valve two opens, allowing the medicine inside the left mixing tank to be pumped out by the right water pump; the reverse is also true. A backflushing structure is also included. When the outlet pipe becomes blocked, multiple pipes are backflushed by connecting the inlet pipe at its bottom and closing one switch at the top of the outlet pipe. After flushing, the waste liquid flows out through the drain pipe, ensuring smooth liquid delivery and timely discharge of the medicine inside the mixing tank. This prevents solid crystal accumulation and pipe blockage, solving the problem of frequent inspections during use and facilitating automatic drug dispensing via multiple sensors. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0016] Figure 3 This is a schematic diagram showing the positional relationship of the liquid outlet pipe of this utility model.

[0017] Figure 4 This utility model Figure 3 Enlarged structural diagram at point B.

[0018] Figure 5 This is a schematic diagram of the connection structure of the drug delivery pipeline of this utility model.

[0019] Figure 6 This utility model Figure 5 A magnified view of the structure at point C.

[0020] Explanation of reference numerals in the attached diagram: 1. Level gauge; 2. Solid aggregate bin; 3. Hybrid motor; 4. Discharge electric valve; 5. pH meter; 6. Water supply electric valve; 7. Thermometer; 8. Dosing tank; 9. Control cabinet; 10. Collection tank; 11. Water supply pipe; 12. Level observation pipe; 13. Mounting bracket; 14. Water pump; 15. Pump inlet pipe; 16. Pressure gauge; 17. Discharge pipe; 18. Drainage pipe; 19. Pump outlet pipe; 20. Drug delivery pipe; 21. Control valve one; 22. Control valve two; 23. Control valve three; 24. Water inlet pipe interface; 25. External pipe interface; 26. Vent valve. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0022] This utility model provides, for example Figure 1-6 The illustrated acid washing tower alkali addition and dosing device includes a collection tank 10, with two dosing tanks 8 (main and auxiliary) mounted on the top of the collection tank 10. A solid aggregate bin 2 is mounted on the top of each dosing tank 8. A mounting bracket 13 is provided between the two dosing tanks 8. A control cabinet 9 is mounted on one side of the mounting bracket 13, and two outlet pipes 17 are mounted on the other side of the mounting bracket 13. The outlet pipes 17 are connected to backwash pipes. A delivery pipe 20 with multiple control valves connects the dosing tanks 8. The control cabinet 9 is connected to the outlet pipes 17, and various detection devices can be installed inside the control cabinet 9.

[0023] A hybrid motor 3 is installed at the top of the dosing tank 8. A pH meter 5, a thermometer 7, and a level gauge 1 extending into the tank are also installed at the top of the dosing tank 8. By using multiple sensors, the pH concentration of the reagent inside the dosing tank 8 can be controlled by detecting the corresponding data from the sensors. Specific methods include: a preset pH mode, in which the equipment automatically replenishes water and solid alkali to achieve the preset pH value; and pH linkage between the solution and the pickling tower. Since the pH of the dissolving tank is preset, the pH of the pickling tower's water collection tank is brought closer to neutral by adjusting the frequency of the variable frequency alkali replenishment pump. Simultaneously, when the solution in the dissolving tank is consumed to the middle level, the system will automatically replenish the solution to the high level according to the preset pH value.

[0024] The control valves include control valve 21, control valve 22, and control valve 23, all installed on the drug delivery pipeline 20. The outlet pipelines 17 are located on both sides of control valve 22 and are connected to water pumps 14. The inlet of each water pump 14 is connected to a pump inlet pipeline 15, which communicates with the drug delivery pipeline 20. The outlet of each water pump 14 is connected to a pump outlet pipeline 19, which communicates with the outlet pipeline 17. Control valves 21 and 23 are located on the side where the water pump 14 connects to the drug preparation tank 8. When the water pump 14 malfunctions, different control valves can be closed or opened to achieve different discharge effects, preventing the drug preparation tank 8 on the affected side from becoming unusable due to pump 14 failure and causing drug accumulation.

[0025] The backwashing pipeline includes an inlet pipe interface 24 located at the bottom of the outlet pipe 17, an external pipe interface 25 at the top of the outlet pipe 17, and a drain pipe 18 installed in the middle of the outlet pipe 17. The external pipe interface 25 is used to connect to the pickling tower, and the inlet pipe interface 24 is used to connect to the flushing water, facilitating backwashing of the pipeline.

[0026] Multiple adjustment switches are installed on the liquid outlet pipe 17, and a pressure gauge 16 is installed on one side of the drain pipe 18. By closing different adjustment switches during the backwashing process, different areas can be cleaned, thereby providing a better flushing effect.

[0027] A vent valve 26 is connected to one side of the bottom of the mixing tank 8, and a discharge electric valve 4 for controlling material discharge is installed at the bottom of the solid collection bin 2. The vent valve 26 is designed to quickly discharge the reagents inside the mixing tank 8, facilitating reagent switching. The discharge electric valve 4 controls the addition of solid NaOH, facilitating pH control of the reagent. The discharge electric valve 4 replaces manual mixing, avoiding skin damage from strong alkalis during manual mixing.

[0028] The side wall of the medicine preparation tank 8 is equipped with a liquid level observation pipe 12. The liquid level observation pipe 12 is made of transparent pipe, which makes it easy to directly observe the water level of the medicine preparation tank 8 from the outside.

[0029] The upper half of the medicine preparation tank 8 is connected to a water supply pipe 11, and a water supply electric valve 6 is installed on one side of the water supply pipe 11. The water supply pipe 11 is used to ensure that the medicine is within an appropriate water level range.

[0030] This invention employs two mixing tanks 8 (main and auxiliary) and two water pumps 14, with multiple control valves installed on the drug delivery pipeline 20. During normal operation, control valve 22 in the middle is closed, and the mixing tank 8 is pumped out by the adjacent water pump 14 to neutralize acidic waste liquid. When the water pump 14 near the left mixing tank 8 malfunctions and cannot be used, control valve 3 23 near the right closes, and control valve 22 opens, allowing the drug inside the left mixing tank 8 to be pumped out by the right water pump 14; the reverse is also true. A backflushing structure is also included. When the outlet pipeline 17 becomes blocked, multiple pipelines are backflushed by connecting the inlet pipe interface 24 at its bottom and closing the switch on one side of the outlet pipeline 17. After flushing, the waste liquid flows out through the drain pipe 18, ensuring smooth liquid delivery and timely discharge of the drug inside the mixing tank 8. This prevents solid crystal accumulation and pipeline blockage, solving the problem of frequent inspections during use and facilitating automatic drug dispensing through multiple sensors.

[0031] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A device for adding alkali and preparing chemicals in an acid washing tower, characterized in that: The system includes a collection tank (10), with two main and auxiliary medicine tanks (8) installed at the top of the collection tank (10). A solid aggregate bin (2) is installed at the top of the medicine tank (8). An installation bracket (13) is provided between the two medicine tanks (8). A control cabinet (9) is installed on one side of the installation bracket (13). Two liquid outlet pipes (17) are installed on the other side of the installation bracket (13). The liquid outlet pipes (17) are connected to a backwash pipe. A medicine delivery pipe (20) with multiple control valves is connected between the medicine tanks (8).

2. The acid washing tower alkali addition and dosing device according to claim 1, characterized in that: The top of the medicine mixing tank (8) is equipped with a hybrid motor (3), and the top of the medicine mixing tank (8) is also equipped with a pH meter (5), a thermometer (7) and a level gauge (1) extending to the inside of the medicine mixing tank (8).

3. The acid washing tower alkali addition and dosing device according to claim 1, characterized in that: The control valves include control valve one (21), control valve two (22) and control valve three (23) installed on the drug delivery pipeline (20). The liquid outlet pipeline (17) is located on both sides of control valve two (22) and is connected to a water pump (14). The inlet of the water pump (14) is connected to a pump inlet pipeline (15) that communicates with the drug delivery pipeline (20). The outlet of the water pump (14) is connected to a pump outlet pipeline (19) that communicates with the liquid outlet pipeline (17). Control valve one (21) and control valve three (23) are located on the connection side between the water pump (14) and the drug preparation tank (8).

4. The acid washing tower alkali addition and dosing device according to claim 3, characterized in that: The backwash pipe includes an inlet pipe interface (24) at the bottom of the outlet pipe (17), an external pipe interface (25) at the top of the outlet pipe (17), and a drain pipe (18) installed in the middle of the outlet pipe (17).

5. The acid washing tower alkali addition and dosing device according to claim 4, characterized in that: Multiple regulating switches are installed on the liquid outlet pipe (17), and a pressure gauge (16) is installed on one side of the drain pipe (18).

6. The acid washing tower alkali addition and dosing device according to claim 1, characterized in that: The bottom of the medicine mixing tank (8) is connected to a vent valve (26), and the bottom of the solid collection bin (2) is provided with a discharge electric valve (4) for controlling the discharge of materials.

7. The acid washing tower alkali addition and dosing device according to claim 1, characterized in that: The side wall of the medicine dispensing tank (8) is equipped with a liquid level observation tube (12), which is made of transparent tubing.

8. The acid washing tower alkali addition and dosing device according to claim 1, characterized in that: The upper half of the medicine dispensing tank (8) is connected to a water supply pipe (11), and a water supply electric valve (6) is installed on one side of the water supply pipe (11).

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