Heat exchange mechanism of sodium hypochlorite generator

Abstract

The utility model belongs to sodium hypochlorite generator technical field, concretely is sodium hypochlorite generator's heat exchange mechanism, including electrolytic cell shell still includes: Heat exchange coil, the water inlet of heat exchange coil is connected with electric three -way valve no.

Description

Technical Field

[0001] This utility model belongs to the technical field of sodium hypochlorite generators, and in particular relates to a heat exchange mechanism for a sodium hypochlorite generator. Background Technology

[0002] Sodium hypochlorite generators are electrochemical devices that produce sodium hypochlorite solution by electrolyzing saturated brine. They are widely used in drinking water disinfection, sewage treatment, and epidemic prevention. During the electrolysis reaction, the device continuously releases a large amount of heat, causing the electrolyte temperature to rise significantly. This not only reduces the current efficiency of the electrolysis process, affecting the yield and effective chlorine concentration of sodium hypochlorite, but also accelerates the decomposition of the sodium hypochlorite solution, resulting in the loss of the product's effective components.

[0003] Currently, existing sodium hypochlorite generators use simple jacketed or coiled heat exchange structures, directly introducing cooling water for heat exchange. Untreated cooling water contains high levels of calcium and magnesium ions, which easily leads to scaling inside the jacket or tubes. After long-term operation, the heat exchange efficiency drops sharply. In addition, in cold environments, excessively low inlet water temperature not only inhibits the electrolysis rate but may also cause thermal stress that damages the electrode columns. Therefore, an additional heating mechanism is required to raise the temperature of the inlet water, which not only increases the user's initial investment cost but also increases additional power consumption.

[0004] To address the aforementioned problems, this application proposes a heat exchange mechanism for a sodium hypochlorite generator. Utility Model Content

[0005] The purpose of this invention is to provide a heat exchange mechanism for a sodium hypochlorite generator, which solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a heat exchange mechanism for a sodium hypochlorite generator, including an electrolytic cell shell, and further comprising: A heat exchange coil is installed on the outer wall of the electrolytic cell shell. The water inlet of the heat exchange coil is connected to an electric three-way valve through a heat exchange water inlet pipe, and the electric three-way valve is connected to a three-way connector through a connecting pipe. The first tee joint is connected to the second tee joint and the third tee joint through the second connecting pipe and the second water supply pipe respectively. The third tee joint is connected to the drain outlet of the heat exchange coil through the heat exchange drain pipe. The second tee joint is connected to the outer shell of the electrolytic cell through the injection pipe. The three-way connector three is connected to the electric three-way valve two through the connecting pipe three, and the electric three-way valve two is connected to the salt dissolving tank through the water injection pipe; A water softener, wherein the outlet of the water softener is connected to an electric three-way valve via a water supply pipe.

[0007] Furthermore, the second three-way connector is connected to the outlet of the brine pump via a liquid delivery pipe, and the inlet of the brine pump is connected to the salt dissolving tank via a liquid extraction pipe.

[0008] Furthermore, electromagnetic check valves are installed on the water delivery pipe 2, the liquid delivery pipe and the connecting pipe 3, and a temperature sensor is installed on the injection pipe.

[0009] Furthermore, the water inlet of the water softener is connected to an external water pipe via an inlet pipe.

[0010] Furthermore, the electric three-way valve is connected to the drain pipe.

[0011] Furthermore, an outer protective shell is fixed to the outer shell of the electrolytic cell, and the heat exchange coil is disposed between the outer shell of the electrolytic cell and the outer protective shell.

[0012] Furthermore, the two ends of the outer shell of the electrolytic cell are fixed with connecting flanges, and an electrode post is inserted into the middle of the connecting flange.

[0013] This utility model has the following beneficial effects: This invention reduces the risk of scale formation in the heat exchange coil by softening the cooling water injected into it through a water softener, thereby ensuring unobstructed heat exchange path, improving heat exchange stability and the service life of the heat exchange coil, and reducing system maintenance frequency and replacement costs. This invention allows water that has undergone heat exchange to be introduced into the three-way connector two via the three-way connector three and the water supply pipe two. When the inlet water temperature is low, the warm water that has undergone superheat exchange is mixed with the raw water with a lower temperature from the water softener, thereby increasing the temperature of the liquid injected into the outer shell of the electrolytic cell. No additional heating device is required, which reduces the system operating cost and energy consumption.

[0014] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model; Figure 2 This is a schematic cross-sectional view of the outer protective shell of this utility model; Figure 3This is a partial structural schematic diagram of the present invention; The attached diagram lists the components represented by each number as follows: In the diagram: 1. Electrolytic cell outer shell; 101. Connecting flange; 2. Heat exchange coil; 3. Electric three-way valve one; 301. Water supply pipe one; 302. Heat exchange inlet water pipe; 303. Connecting pipe one; 4. Three-way connector one; 401. Connecting pipe two; 402. Water supply pipe two; 5. Three-way connector two; 501. Feeding pipe; 502. Liquid supply pipe; 6. Three-way connector three; 601. Heat exchange drain pipe; 602. Connecting pipe three; 7. Electric three-way valve two; 701. Water injection pipe; 702. Drain pipe; 8. Salt dissolving tank; 9. Brine pump; 901. Liquid extraction pipe; 10. Water softener; 1001. Inlet water pipe; 11. Outer casing; 12. Temperature sensor. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] Please see Figures 1 to 3 As shown, this utility model is a heat exchange mechanism for a sodium hypochlorite generator, including an electrolytic cell shell 1, and further including: a heat exchange coil 2, installed on the outer wall of the electrolytic cell shell 1; the inlet of the heat exchange coil 2 is connected to an electric three-way valve 3 through a heat exchange inlet pipe 302, and the electric three-way valve 3 is connected to a three-way connector 4 through a connecting pipe 303; the three-way connector 4 is connected to a three-way connector 5 and a three-way connector 6 through a connecting pipe 401 and a water supply pipe 402, respectively; the three-way connector 6 is connected to the drain outlet of the heat exchange coil 2 through a heat exchange drain pipe 601; the three-way connector 5 is connected to the electrolytic cell shell 1 through a filling pipe 501; the three-way connector 6 is connected to an electric three-way valve 7 through a connecting pipe 3, and the electric three-way valve 7 is connected to a salt dissolving tank 8 through a water supply pipe 701; and a water softener 10, the outlet of which is connected to the electric three-way valve 3 through a water supply pipe 301. This embodiment provides a heat exchange mechanism for a sodium hypochlorite generator. The electrolytic cell shell 1 serves as the container for the electrolytic reaction. The heat exchange coil 2 is tightly attached to the outer wall of the electrolytic cell shell 1. The material of the heat exchange coil 2 can be copper, stainless steel, or titanium. Soft water output from the water softener 10 enters the electric three-way valve 3 and is distributed to the heat exchange inlet pipe 302 and the connecting pipe 303. The water entering the connecting pipe 303 is injected into the electrolytic cell shell 1 through the three-way connector 4, the connecting pipe 401, the three-way connector 5, and the injection pipe 501. The water entering the heat exchange inlet pipe 302 enters the heat exchange coil. The heat exchange coil 2 exchanges heat with the outer shell 1 of the electrolytic cell to reduce the temperature of the outer shell 1. The softened water enters the heat exchange coil 2 as a cooling medium. Because it contains almost no or only trace amounts of calcium and magnesium ions, it will not precipitate calcium and magnesium ions due to high temperature during the heat exchange with the outer shell 1 of the electrolytic cell, thus forming insoluble precipitates such as calcium carbonate and magnesium hydroxide, i.e., scale. This eliminates the main cause of scale formation from the source, ensuring that the heat exchange coil 2 always maintains high thermal conductivity and can maintain stable heat exchange efficiency after long-term operation, thereby improving the service life of the heat exchange coil 2. The water after heat exchange is sent to the three-way connector 3 6 through the heat exchange drain pipe 601. When the water temperature in the water supply pipe 301 is low, the water entering the tee connector 36 enters the tee connector 4 through the water supply pipe 2 402 and mixes with the water entering the tee connector 4 through the connecting pipe 303, thereby increasing the water temperature. When the water temperature in the water supply pipe 301 does not require heating, the water entering the three-way connector 36 enters the electric three-way valve 27 through the heat exchange drain pipe 601. The water entering the electric three-way valve 27 can be put into the salt tank 8 through the water injection pipe 701 for use as a solvent.

[0020] The three-way connector 25 is connected to the outlet of the brine pump 9 through the liquid delivery pipe 502, and the inlet of the brine pump 9 is connected to the salt tank 8 through the liquid extraction pipe 901. The brine pump 9 extracts the salt solution in the liquid extraction pipe 901, and then sends the salt solution into the outer shell 1 of the electrolytic cell through the liquid extraction pipe 901, the three-way connector 25 and the injection pipe 501.

[0021] Among them, solenoid check valves are installed on water supply pipe 2 (402), liquid supply pipe 502, and connecting pipe 3, and temperature sensor 12 is installed on the injection pipe 501. The solenoid check valves are used to control the opening and closing of water supply pipe 2 (402), liquid supply pipe 502, and connecting pipe 3, respectively. Temperature sensor 12 is used to monitor the temperature of the material entering the connecting flange 101. The one-way solenoid valves, electric three-way valve 1 (3), electric three-way valve 2 (7), and temperature sensor 12 on water supply pipe 2 (402) and connecting pipe 3 are electrically connected to a central controller. When temperature sensor 12 detects that the feed temperature is within the normal temperature range, the solenoid check valve on water supply pipe 2 (402) closes, and the solenoid check valve on connecting pipe 3 closes. When the electromagnetic check valve opens, and the temperature sensor 12 detects that the feed temperature is lower than the normal temperature range, the central controller controls the electromagnetic check valve on the water supply pipe 2 402 to open and the electromagnetic check valve on the connecting pipe 3 to close, so that the water after heat exchange flows back to the three-way connector 4 through the water supply pipe 2 402 to increase the temperature of the water. (The judgment and control logic executed by the central controller, such as the comparison result between the signal value fed back by the temperature sensor 12 and the preset threshold, drives the electric three-way valve or electromagnetic check valve to open or close, thereby realizing mode switching. This can be achieved using existing and mature automation control technology. The control logic itself belongs to existing technology.)

[0022] The water inlet of the water softener 10 is connected to an external water pipe through the water inlet pipe 1001, and external water enters the water softener 10 through the water inlet pipe 1001 for softening.

[0023] Among them, the electric three-way valve 27 is connected to the drain pipe 702. When the temperature sensor 12 detects that the water temperature is normal, the electric three-way valve 27 controls the water entering the electric three-way valve 27 to be discharged through the drain pipe 702. When it is necessary to replenish the salt tank 8, the electric three-way valve 27 controls the water entering the electric three-way valve 27 to enter the salt tank 8 through the water injection pipe 701.

[0024] The outer shell 1 of the electrolytic cell is fixedly provided with an outer protective shell 11, and the heat exchange coil 2 is disposed between the outer shell 1 of the electrolytic cell and the outer protective shell 11.

[0025] The electrolytic cell shell 1 has connecting flanges 101 fixed at both ends, and an electrode post is inserted into the middle of the connecting flange 101.

[0026] It is understandable that this utility model uses soft water as a heat exchange medium to improve heat exchange stability and coil life. At the same time, by mixing the water used for heat exchange with the raw water at a lower temperature, the temperature of the liquid injected into the outer shell 1 of the electrolytic cell is increased, thereby reducing system operating costs and energy consumption.

[0027] A specific application of the operation process of this embodiment is as follows: the external water source is softened by the water softener 10, and the softened water enters the electric three-way valve 3 through the water supply pipe 301. Under the action of the electric three-way valve 3, the water is divided and flows into the heat exchange inlet pipe 302 and the connecting pipe 303 as cooling medium and raw water respectively. The raw water entering the connecting pipe 303 enters the outer shell 1 of the electrolytic cell through the three-way connector 4, the connecting pipe 401, the three-way connector 5, and the injection pipe 501; Water entering the heat exchange inlet pipe 302 enters the heat exchange coil 2 and exchanges heat with the outer shell 1 of the electrolytic cell. The temperature of the electrolyte inside the outer shell 1 of the electrolytic cell decreases, while the temperature of the cooling medium inside the heat exchange coil 2 increases. Then, the water enters the three-way connector 6 through the heat exchange drain pipe 601. If the feed temperature is within the normal threshold (e.g., 15-25℃), the solenoid check valve on the water supply pipe 402 closes, and the solenoid check valve on the connecting pipe 3 opens. The cooling medium enters the electric three-way valve 7 through the connecting pipe 3. The user controls the water replenishment in the salt tank 8 as needed. When water replenishment is required, the cooling medium enters the salt tank 8 through the electric three-way valve 27 and the water injection pipe 701. When water replenishment is not required, the cooling medium is discharged through the drain pipe 702 through the electric three-way valve 27. If the feed temperature is at the normal threshold (e.g., <15℃), the solenoid check valve on the water supply pipe 2402 is opened, and the solenoid check valve on the connecting pipe 3 is closed. The cooling medium enters the three-way connector 14 through the water supply pipe 2402 and mixes with the raw water. It is then injected into the outer shell 1 of the electrolytic cell through the three-way connector 25 and the feed pipe 501. The feed temperature is monitored in real time by temperature sensor 12; The brine pump 9 extracts the brine solution from the salt tank 8 and sends it into the outer shell 1 of the electrolytic cell.

[0028] In the description of this specification, references to terms such as "an embodiment," "example," and "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0029] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A heat exchange mechanism for a sodium hypochlorite generator, comprising an electrolytic cell housing (1), characterized in that, Also includes: Heat exchange coil (2) is installed on the outer wall of the electrolytic cell shell (1). The water inlet of the heat exchange coil (2) is connected to the electric three-way valve (3) through the heat exchange water inlet pipe (302), and the electric three-way valve (3) is connected to the three-way connector (4) through the connecting pipe (303). The first tee connector (4) is connected to the second tee connector (5) and the third tee connector (6) through the second connecting pipe (401) and the second water supply pipe (402), respectively. The third tee connector (6) is connected to the drain outlet of the heat exchange coil (2) through the heat exchange drain pipe (601). The second tee connector (5) is connected to the outer shell (1) of the electrolytic cell through the injection pipe (501). The three-way connector three (6) is connected to the electric three-way valve two (7) through the connecting pipe three (602), and the electric three-way valve two (7) is connected to the salt tank (8) through the water injection pipe (701); The water softener (10) has its outlet connected to the electric three-way valve (3) via a water supply pipe (301).

2. The heat exchange mechanism of the sodium hypochlorite generator according to claim 1, characterized in that: The three-way connector 2 (5) is connected to the outlet of the brine pump (9) through the liquid delivery pipe (502), and the inlet of the brine pump (9) is connected to the salt dissolving tank (8) through the liquid extraction pipe (901).

3. The heat exchange mechanism of the sodium hypochlorite generator according to claim 2, characterized in that: Electromagnetic check valves are installed on the water delivery pipe (402), liquid delivery pipe (502) and connecting pipe (602), and a temperature sensor (12) is installed on the injection pipe (501).

4. The heat exchange mechanism of the sodium hypochlorite generator according to claim 1, characterized in that: The water inlet of the water softener (10) is connected to an external water pipe through an inlet pipe (1001).

5. The heat exchange mechanism of the sodium hypochlorite generator according to claim 1, characterized in that: The electric three-way valve 2 (7) is connected to the drain pipe (702).

6. The heat exchange mechanism of the sodium hypochlorite generator according to claim 1, characterized in that: The outer shell (1) of the electrolytic cell is fixedly provided with an outer protective shell (11), and the heat exchange coil (2) is disposed between the outer shell (1) of the electrolytic cell and the outer protective shell (11).

7. The heat exchange mechanism of the sodium hypochlorite generator according to claim 1, characterized in that: The electrolytic cell shell (1) is fixed with connecting flanges (101) at both ends, and an electrode post is inserted into the middle of the connecting flange (101).

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