A boiler water pH adjustment and ammonia addition device

Abstract

This utility model relates to the field of boiler demineralized water treatment technology, and more particularly to a boiler water pH adjustment and ammonia addition device. It includes an ammonia mixing tank, a drain pipe at the bottom of the mixing tank, an ammonia pump installed on the drain pipe, a power-driven agitator inside the mixing tank, a supply pipe connected to the top of the mixing tank, an injector installed on the supply pipe, the diffuser of the injector connected to the supply pipe, the high-pressure port of the injector connected to the high-pressure demineralized water supply pipe, and the low-pressure port of the injector connected to the ammonia raw material supply pipe. An electric regulating valve is installed on the ammonia raw material supply pipe, and the inlet side of the ammonia raw material supply pipe extends into a finished ammonia tank, which is placed on a lifting platform. This utility model uses an injector for initial rapid mixing of ammonia and demineralized water, combined with secondary mixing by the agitator built into the mixing tank, to ensure rapid and uniform mixing of ammonia and demineralized water.

Description

Technical Field

[0001] This utility model relates to the field of demineralized water treatment technology for boilers, and in particular to a device for adjusting the pH value of boiler water and adding ammonia. Background Technology

[0002] Industrial boiler water typically undergoes a series of filtration and desalination processes to obtain high-purity desalinated water. However, after purification, the pH value of the desalinated water is generally between 6 and 7, which can easily cause acid corrosion to pipelines and equipment. Adding ammonia to the desalinated water plays a crucial role in industrial boiler water treatment, primarily to adjust the pH value of the desalinated water and prevent acid corrosion damage to pipelines and equipment.

[0003] Some existing demineralized water ammonia addition systems involve operators pouring barrels of ammonia water into a dosing tank, then adding demineralized water for dilution and stirring. This dilution and stirring process is slow and heavily relies on the stirring equipment. Utility Model Content

[0004] Based on the above problems, the purpose of this utility model is to provide a device for adjusting the pH value of boiler water and adding ammonia. This utility model adopts the following technical solution:

[0005] This utility model provides a boiler water pH adjustment and ammonia addition device, including an ammonia mixing tank. A drain pipe is installed at the bottom of the ammonia mixing tank, and an ammonia pump is installed on the drain pipe. A power-driven stirrer is installed inside the ammonia mixing tank. A supply pipe is connected to the top of the ammonia mixing tank, and an injector is installed on the supply pipe. The diffuser of the injector is connected to the supply pipe. The high-pressure port of the injector is connected to a high-pressure demineralized water supply pipe, and the low-pressure port of the injector is connected to an ammonia raw material supply pipe. An electric regulating valve is installed on the ammonia raw material supply pipe, and the inlet side of the ammonia raw material supply pipe extends into a finished ammonia tank, which is placed on a lifting platform.

[0006] Preferably, the ammonia mixing tank is equipped with a pH sensor and a level gauge;

[0007] Solenoid valves are installed on the high-pressure demineralized water supply pipe, the ammonia raw material supply pipe, and the drainage pipe.

[0008] The electric regulating valve, pH sensor, level gauge, and solenoid valve are all electrically connected to the PLC control system.

[0009] Preferably, the lifting platform is located inside the foundation pit.

[0010] Preferably, the lifting platform is a scissor lift platform, and the scissor lift platform is driven to lift by a hydraulic system.

[0011] Preferably, a fence is provided around the top of the lifting platform, and a doorway is provided on one side of the fence.

[0012] Preferably, the top of the lifting platform is provided with a bucket placement mark.

[0013] Preferably, the bottom of the ammonia mixing tank is provided with a waste discharge pipe.

[0014] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0015] This invention uses an injector to initially and quickly mix ammonia and demineralized water, and then uses a stirrer built into the ammonia mixing tank for secondary mixing, which can make the ammonia and demineralized water mix quickly and evenly. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a system structure diagram of the ammonia addition device for adjusting the pH value of boiler water according to this utility model;

[0018] Figure 2 This is a schematic diagram of the injector's structure;

[0019] Figure 3 This is a schematic diagram of the lifting platform of this utility model;

[0020] Explanation of reference numerals in the attached diagram: 1. Ammonia mixing tank; 2. Drainage pipe; 3. Ammonia pump; 4. Agitator; 5. Supply pipe; 6. Ejector; 601. Converging section; 602. Mixing section; 603. Diffusion section; 7. High-pressure demineralized water supply pipe; 8. Ammonia raw material supply pipe; 9. Electric regulating valve; 10. Finished ammonia water tank; 11. Lifting platform; 12. pH sensor; 13. Level gauge; 14. Solenoid valve; 15. Foundation pit; 16. Hydraulic system; 17. Fence; 18. Doorway; 19. Tank placement marker; 20. Waste discharge pipe. Detailed Implementation

[0021] To make the technical problems, technical solutions and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0022] like Figures 1 to 3 As shown in the figure, this embodiment discloses a boiler water pH adjustment ammonia addition device, including an ammonia addition mixing tank 1, a drain pipe 2 is provided at the bottom of the ammonia addition mixing tank 1, an ammonia addition pump 3 is installed on the drain pipe 2, and a motor-driven agitator 4 is provided inside the ammonia addition mixing tank 1. The structure of the agitator 4 mainly includes a shaft and a stirring blade provided on the shaft. The shaft is usually driven by a motor installed on the top of the ammonia addition mixing tank 1.

[0023] The top of the ammonia mixing tank 1 is connected to a liquid supply pipe 5, and an ejector 6 is installed on the liquid supply pipe 5. The ejector 6 mainly includes a diffuser, a low-pressure port, a high-pressure port, a converging section, a mixing section (also called a throat), and a diffusion section. The diffuser of the ejector 6 is connected to the liquid supply pipe 5, the high-pressure port of the ejector 6 is connected to the high-pressure demineralized water supply pipe 7, and the low-pressure port of the ejector 6 is connected to the ammonia raw material supply pipe 8. An electric regulating valve 9 is installed on the ammonia raw material supply pipe 8, and the inlet side of the ammonia raw material supply pipe 8 extends into the finished ammonia tank 10. Here, the ejector 6 mixes the ammonia and demineralized water using the negative pressure effect of the ejector 6 and the diffusion section. Simultaneously, the agitator 4 inside the ammonia mixing tank 1 further agitates the mixed ammonia solution.

[0024] In addition, a waste discharge pipe 20 is installed at the bottom of the ammonia mixing tank 1. A valve is installed on the waste discharge pipe 20, which is used to drain the liquid from the ammonia mixing tank 1 during maintenance. An exhaust valve is installed at the top of the ammonia mixing tank 1 to maintain pressure balance inside and outside the tank.

[0025] Solenoid valves 14 are installed on the high-pressure demineralized water supply pipe 7, the ammonia raw material supply pipe 8, and the drain pipe 2; a pH sensor 12 and a level gauge 13 are installed in the ammonia mixing tank 1; the pH sensor 12 is used to monitor the pH value of the mixture in the ammonia mixing tank 1, and the level gauge 13 is used to monitor the height of the mixture in the ammonia mixing tank 1.

[0026] The electric regulating valve 9, pH sensor 12, level gauge 13, and solenoid valve 14 are all electrically connected to the PLC control system. The PLC control system is a commonly used control system in the field of automation; those skilled in the art can commission a third-party manufacturer to customize one according to functional requirements.

[0027] In this embodiment, the finished ammonia water tank 10 is placed on the lifting platform 11; the height of the lifting platform 11 is controlled so that the ammonia water raw material supply pipe 8 can be inserted to the bottom of the ammonia water tank when drawing ammonia water. In addition, multiple branch pipes can be set at the inlet end of the ammonia water raw material supply pipe 8 to draw multiple finished ammonia water tanks 10.

[0028] The lifting platform 11 is set inside the foundation pit 15. The lifting platform 11 is lowered to be parallel to the ground. The finished ammonia water barrels 10 are transported to the lifting platform 11 by the transport trolley. A barrel placement mark position 19 is set on the top of the lifting platform 11. Each barrel placement mark position 19 corresponds to an ammonia water raw material supply pipe 8 or a branch pipe connected to the ammonia water raw material supply pipe 8.

[0029] The top of the lifting platform 11 is surrounded by a fence 17 for normal protection. A doorway 18 is provided on one side of the fence 17. The doorway 18 can be opened or closed and is hinged to the fence 17.

[0030] In this embodiment, the lifting platform 11 is a scissor lift platform, which is driven by a hydraulic system 16 for lifting. A scissor lift platform is an aerial work platform that uses a scissor mechanism and achieves smooth lifting through a hydraulic system. It is widely used in construction, industry, logistics warehousing, and other fields.

[0031] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A boiler water pH adjustment ammonia addition device, comprising an ammonia mixing tank (1), wherein a drain pipe (2) is provided at the bottom of the ammonia mixing tank (1), and an ammonia pump (3) is installed on the drain pipe (2), characterized in that: The ammonia mixing tank (1) is equipped with a power-driven agitator (4). The top of the ammonia mixing tank (1) is connected to a liquid supply pipe (5). An injector (6) is installed on the liquid supply pipe (5). The diffuser of the injector (6) is connected to the liquid supply pipe (5). The high-pressure port of the injector (6) is connected to the high-pressure demineralized water supply pipe (7). The low-pressure port of the injector (6) is connected to the ammonia raw material supply pipe (8). An electric regulating valve (9) is installed on the ammonia raw material supply pipe (8). The inlet side of the ammonia raw material supply pipe (8) extends into the finished ammonia water tank (10). The finished ammonia water tank (10) is placed on a lifting platform (11).

2. The boiler water pH adjustment and ammonia addition device according to claim 1, characterized in that: The ammonia mixing tank (1) is equipped with a pH sensor (12) and a level gauge (13). Solenoid valves (14) are installed on the high-pressure demineralized water supply pipe (7), the ammonia raw material supply pipe (8), and the drain pipe (2). The electric regulating valve (9), pH sensor (12), level gauge (13) and solenoid valve (14) are all electrically connected to the PLC control system.

3. The ammonia addition device for adjusting the pH value of boiler water according to claim 1, characterized in that: The lifting platform (11) is located inside the foundation pit (15).

4. The boiler water pH adjustment and ammonia addition device according to claim 1, characterized in that: The lifting platform (11) is a scissor lift platform, which is driven to lift by a hydraulic system (16).

5. The boiler water pH adjustment and ammonia addition device according to claim 4, characterized in that: The top of the lifting platform (11) is surrounded by a fence (17), and a doorway (18) is provided on one side of the fence (17).

6. The boiler water pH adjustment and ammonia addition device according to claim 4, characterized in that: The top of the lifting platform (11) is provided with a bucket placement mark (19).

7. The boiler water pH adjustment and ammonia addition device according to claim 1, characterized in that: The bottom of the ammonia mixing tank (1) is equipped with a waste discharge pipe (20).

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