A boiler water tank pH on-line detection and automatic dosing device

Abstract

This utility model discloses an online pH detection and automatic dosing device for boiler water tanks, relating to the field of water quality regulation technology. It includes a chemical tank with an electromagnetic diaphragm metering pump fixedly connected to it. An inlet pipe is connected to the inlet end of the electromagnetic diaphragm metering pump, and the inlet pipe is vertically fixed to the inside of the chemical tank. A float is fitted onto the outside of the inlet pipe, and a magnetic block is fixedly connected to the bottom of the float. A Hall sensor is fixedly connected to the bottom of the chemical tank at a position corresponding to the magnetic block. The device also includes a controller and a pH sensor, all of which are electrically connected to the controller. This online pH detection and automatic dosing device for boiler water tanks can automatically and quantitatively add chemicals based on pH, making chemical addition more convenient and accurate.

Description

Technical Field

[0001] This utility model relates to the field of water quality regulation technology, specifically to an online pH detection and automatic dosing device for boiler water tanks. Background Technology

[0002] The boiler equipment has its own heat exchanger device. The water in the storage tank is circulated and heated in the heat exchanger for later use. The stable control of the pH value of the water in the storage tank is crucial to the service life and safe operation of the boiler equipment.

[0003] Because boiler water tanks are typically installed at considerable height, manual labor for adding chemicals is not only inconvenient but also poses a significant risk of falls, seriously threatening the safety of workers. Furthermore, manual addition relies entirely on experience to control the dosage, making precise dosing difficult and resulting in large fluctuations in the pH value of the water in the tank, failing to maintain it within the stable range required for boiler operation. Abnormal fluctuations in the boiler water pH value directly exacerbate corrosion and scaling problems in core boiler components such as heat exchangers, significantly shortening the overall service life of the boiler equipment.

[0004] Therefore, it is necessary to propose an online pH detection and automatic dosing device for boiler water tanks to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved The purpose of this invention is to provide an online detection and automatic dosing device for pH value in boiler water tanks, so as to solve the problem of inconvenient pH adjustment in existing boiler water tanks mentioned in the background art.

[0006] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: an online pH detection and automatic dosing device for boiler water tanks, comprising a chemical tank, an electromagnetic diaphragm metering pump fixedly connected to the chemical tank, an inlet pipe connected to the inlet end of the electromagnetic diaphragm metering pump, the inlet pipe being vertically fixedly connected to the inner side of the chemical tank, a float ball sleeved on the outer side of the inlet pipe, a magnetic block fixedly connected to the bottom end of the float ball, and a Hall sensor fixedly connected to the bottom end of the chemical tank at a position corresponding to the magnetic block; it also includes a controller and a pH sensor, wherein the pH sensor, the electromagnetic diaphragm metering pump, and the Hall sensor are all electrically connected to the controller.

[0007] Preferably, the inlet pipe is a rigid pipe, the bottom end of the medicine tank is fixedly connected to a base, the inlet pipe is inserted into the base, and the base has an inlet hole.

[0008] Preferably, the Hall sensor is fixedly connected to the inside of the base.

[0009] Preferably, the magnetic block is annular, and several locking blocks are fixedly connected to the inner side of the float along its axial direction.

[0010] Preferably, the top of the medicine tank is provided with a liquid inlet, and a partition is fixedly connected to the inner side of the medicine tank. The liquid inlet and the liquid inlet pipe are located on both sides of the partition.

[0011] Preferably, it also includes an alarm, which is electrically connected to the controller.

[0012] Preferably, the medicine tank is a transparent box.

[0013] (III) Beneficial Effects Compared with the prior art, this utility model provides an online pH detection and automatic dosing device for boiler water tanks, which has the following beneficial effects: 1. The online pH detection and automatic dosing device for boiler water tanks, by setting up a pH sensor and an electromagnetic diaphragm metering pump, enables it to automatically add chemicals in quantitative amounts according to the pH, making chemical addition more convenient and eliminating the need for manual addition from a height. At the same time, compared with manual addition, its addition amount is more accurate.

[0014] 2. The online pH detection and automatic dosing device for boiler water tank uses a magnetic block driven by a float ball to move up and down outside the inlet pipe and a Hall sensor fixed at the bottom of the liquid tank to remind the staff to add liquid when the liquid level is low. It has a simple structure and low installation cost. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional schematic diagram of the structure of this utility model; Figure 3 This is a partial cross-sectional schematic diagram of the structure of this utility model; Figure 4 This is a schematic diagram of the structure of this utility model in use.

[0016] In the diagram: 1. Water storage tank; 2. Controller; 3. Heat exchanger; 4. Medicine tank; 5. pH sensor; 7. Liquid inlet; 8. Electromagnetic diaphragm metering pump; 9. Liquid inlet pipe; 10. Baffle; 11. Float; 12. Base; 13. Hall sensor; 14. Locking block; 15. Magnetic block; 16. Liquid inlet hole. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Please see Figure 1-4 As shown, a boiler water tank pH value online detection and automatic dosing device includes a chemical tank 4, an electromagnetic diaphragm metering pump 8 fixedly connected to the chemical tank 4, an inlet pipe 9 connected to the inlet end of the electromagnetic diaphragm metering pump 8, the inlet pipe 9 being vertically fixedly connected to the inner side of the chemical tank 4, a float ball 11 sleeved on the outer side of the inlet pipe 9, a magnetic block 15 fixedly connected to the bottom end of the float ball 11, and a Hall sensor 13 fixedly connected to the bottom end of the chemical tank 4 at a position corresponding to the magnetic block 15; it also includes a controller 2 and a pH sensor 5, the pH sensor 5, the electromagnetic diaphragm metering pump 8 and the Hall sensor 13 being electrically connected to the controller 2.

[0019] In use, connect pH sensor 5 to the inlet pipe of heat exchanger 3, and connect the outlet of electromagnetic diaphragm metering pump 8 to water storage tank 1. pH sensor 5 collects the pH value of the water entering heat exchanger 3 in real time and transmits the data to controller 2. Controller 2 compares the real-time pH value with a preset standard range to determine if it is within the acceptable range. If the detected value exceeds the range, controller 2 will instruct electromagnetic diaphragm metering pump 8 to perform quantitative dispensing based on the actual difference, thereby controlling the pH value of the water. As the medicine in medicine tank 4 is continuously consumed, its liquid level drops, and float 11 drops synchronously with the liquid level. When magnetic block 15 approaches Hall sensor 13, Hall sensor 13 is triggered and transmits a signal to controller 2, indicating that medicine needs to be replenished.

[0020] Specifically, the dosage of the drug is calculated using the following formula:

[0021] In the formula, β is the amount of acid / base required to change the pH of 1 L of water by one unit, and V 水 C represents the water storage capacity of tank 1, ΔpH represents the deviation between the target pH and the measured pH, and C represents the water volume. 药 denoted as , where is the molar concentration of the active ingredient in the reagent that plays a neutralizing role, and f is the correction factor for water quality fluctuations and reagent losses caused by the inflow and outflow of water into storage tank 1, where f is 0.95.

[0022] To ensure stable raising and lowering of the float 11, the inlet pipe 9 is a rigid pipe. A base 12 is fixedly connected to the bottom of the medicine tank 4, and the inlet pipe 9 is inserted into the base 12. An inlet hole 16 is provided on the base 12. By setting the base 12, the inlet pipe 9 is limited, making its installation more convenient. When the liquid is pumped, the medicine in the medicine tank 4 enters the inlet pipe 9 through the inlet hole 16.

[0023] To ensure the sealing effect of the medicine tank 4 and prevent medicine leakage, the Hall sensor 13 is fixedly connected to the inside of the base 12. To facilitate the installation and removal of the Hall sensor 13, the Hall sensor 13 is threaded through the medicine tank 4 and connected to the base 12.

[0024] In some embodiments, the magnetic block 15 is annular, and a plurality of locking blocks 14 are fixedly connected to the inner side of the float 11 along its axial direction. By using the annular magnetic block 15, the float 11 can still stably trigger the Hall sensor 13 when it rotates.

[0025] To prevent liquid level fluctuations from affecting the rise and fall of the float 11 when adding medicine, the top of the medicine tank 4 is provided with a liquid inlet 7, and a partition 10 is fixedly connected to the inside of the medicine tank 4. The liquid inlet 7 and the liquid inlet pipe 9 are located on opposite sides of the partition 10. By setting the partition 10 to separate the liquid inlet 7 and the liquid inlet pipe 9, the liquid level fluctuations on the side of the liquid inlet pipe 9 are reduced when adding liquid.

[0026] To remind staff to add medication in a timely manner, an alarm is also included, which is electrically connected to controller 2. When Hall sensor 13 is triggered, controller 2 activates the alarm. Preferably, the medication tank 4 is a transparent tank. By using a transparent tank, staff can see the liquid level inside the medication tank 4 and add medication in a timely manner.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for online pH detection and automatic dosing of boiler water tank, characterized in that: The system includes a liquid tank (4), on which an electromagnetic diaphragm metering pump (8) is fixedly connected. The inlet end of the electromagnetic diaphragm metering pump (8) is connected to an inlet pipe (9), which is vertically fixedly connected to the inside of the liquid tank (4). A float (11) is sleeved on the outside of the inlet pipe (9). A magnetic block (15) is fixedly connected to the bottom end of the float (11). A Hall sensor (13) is fixedly connected to the bottom end of the liquid tank (4) at a position corresponding to the magnetic block (15). It also includes a controller (2) and a pH sensor (5), wherein the pH sensor (5), the electromagnetic diaphragm metering pump (8) and the Hall sensor (13) are all electrically connected to the controller (2).

2. The online pH detection and automatic dosing device for boiler water tanks according to claim 1, characterized in that: The inlet pipe (9) is a rigid pipe, and the bottom end of the liquid tank (4) is fixedly connected to a base (12). The inlet pipe (9) is inserted into the base (12), and the base (12) has an inlet hole (16).

3. The online pH detection and automatic dosing device for boiler water tanks according to claim 1, characterized in that: The Hall sensor (13) is fixedly connected to the inside of the base (12).

4. The online pH detection and automatic dosing device for boiler water tanks according to claim 1, characterized in that: The magnetic block (15) is ring-shaped, and several locking blocks (14) are fixedly connected to the inner side of the float (11) along its axial direction.

5. The online pH detection and automatic dosing device for boiler water tank according to claim 1, characterized in that: The top of the liquid tank (4) is provided with an inlet (7), and a partition (10) is fixedly connected to the inner side of the liquid tank (4). The inlet (7) and the inlet pipe (9) are located on both sides of the partition (10).

6. The online pH detection and automatic dosing device for boiler water tanks according to claim 1, characterized in that: It also includes an alarm that is electrically connected to the controller (2).

7. The online pH detection and automatic dosing device for boiler water tanks according to claim 1, characterized in that: The medicine tank (4) is a transparent box.

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