A concentration adjustment monitoring device for a sodium hypochlorite generator

Abstract

The utility model discloses a concentration regulation monitoring devices of sodium hypochlorite generator belongs to the field of disinfection, including sodium hypochlorite generator, the input of sodium hypochlorite generator is equipped with the mixed jar of providing brine and the water storage jar of providing soft water. The utility model compared with prior art's advantage lies in: this device through the pulse type start -stop of pulse on -off valve, to the solution in the electrolytic chamber inside is constantly extracted, at the same time, avoid electrode stick damage sodium hypochlorite online concentration meter, and through sodium hypochlorite online concentration meter to the solution in the detection box inside behind pulse on -off valve is monitored, after detection is completed, will through the timing on -off valve under the detection box with the solution is discharged to the recovery tank, and the solution in the recovery tank will be added electrolytic chamber in through reflux pump again, thereby complete the circulation of electrolytic solution, guarantee quality inspection, meanwhile, will not influence the efficiency of electrolysis.

Description

Technical Field

[0001] This utility model relates to the field of disinfection, specifically to a concentration adjustment and monitoring device for a sodium hypochlorite generator. Background Technology

[0002] Sodium hypochlorite solution is a traditional disinfectant used in municipal water supply and hospitals, and is also widely used for disinfection of home environments, public environments, and tableware. To ensure that the concentration of sodium hypochlorite solution is within the optimal range after production, a concentration adjustment and monitoring device is usually installed inside the sodium hypochlorite generator to detect the concentration of the electrolyzed sodium hypochlorite solution.

[0003] The existing sodium hypochlorite generator has a general connection structure consisting of a mixing tank for providing brine and a storage tank for providing soft water, both connected to one side of the electrolysis chamber of the sodium hypochlorite generator. Both the mixing tank and the storage tank are connected to the input port of the sodium hypochlorite generator via a pressure pump. The electricity for electrolysis of the mixed liquid inside the electrolysis chamber is provided by positive and negative electrode rods inserted into the top surface of the electrolysis chamber. To ensure the uniformity of electrolysis, a stirring shaft disc driven by a drive motor is located on the bottom surface of the electrolysis chamber. The stirring shaft disc is made of non-conductive material.

[0004] To ensure monitoring of the sodium hypochlorite solution, after electrolysis is completed, the power is turned off and the discharge port is opened to release a quantitative amount of test solution for testing (using electrochemical methods and iodometric methods, etc.). Once the concentration is confirmed to be within acceptable limits, the sodium hypochlorite solution in the electrolysis chamber is released. If the concentration is too low or too high, it is necessary to add brine raw materials or extend the electrolysis time, depending on the concentration level. Utility Model Content

[0005] The technical problem this invention aims to solve is that the existing concentration regulation and monitoring devices for sodium hypochlorite generators cannot automatically monitor the concentration inside the electrolysis chamber during the electrolysis process and adjust the electrolysis time accordingly.

[0006] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a concentration adjustment and monitoring device for a sodium hypochlorite generator, including a sodium hypochlorite generator, wherein the input end of the sodium hypochlorite generator is provided with a mixing tank for providing brine and a water storage tank for providing soft water, and both the mixing tank and the water storage tank are connected to the input port of the sodium hypochlorite generator through a pressure pump;

[0007] The sodium hypochlorite generator includes an electrolysis chamber for electrolysis reaction, a positive electrode rod and a negative electrode rod inserted on the top cover of the electrolysis chamber, and a stirring shaft disk passing through the bottom surface of the electrolysis chamber. A drive motor is provided on the shaft of the stirring shaft disk.

[0008] The electrolysis chamber has a detection port for detecting sodium hypochlorite concentration at the lower side wall. The output end of the detection port is equipped with a pulse stop valve that opens and closes at a time. The output end of the pulse stop valve is equipped with a test tank for storing the test liquid. Inside the test tank is an online sodium hypochlorite concentration meter for monitoring the concentration of the test liquid. The bottom surface of the test tank is equipped with a recovery tank connected to it via a timed stop valve. The bottom output end of the recovery tank is equipped with a reflux pump that returns the detected sample to the electrolysis chamber.

[0009] As an improvement, the output port of the inspection box is located on the bottom surface of the inspection box, the input port of the recycling box is located on the top surface of the recycling box, and several auxiliary support rods are provided between the bottom surface of the inspection box and the top surface of the recycling box.

[0010] As an improvement, the top surface of the electrolysis chamber is provided with a gas discharge port for emitting gas.

[0011] As an improvement, the reflux pump output connection port of the electrolysis chamber is located on the top surface of the side wall of the electrolysis chamber.

[0012] As an improvement, a discharge port for discharging sodium hypochlorite solution is provided on one side of the bottom surface of the electrolysis chamber, and a check valve is provided at the output end of the discharge port.

[0013] As an improvement, both the mixing tank and the water storage tank are equipped with flow meters to detect the output.

[0014] The advantages of this invention compared to existing technologies are as follows: This device continuously extracts the solution inside the electrolysis chamber through the pulse start and stop of the pulse stop valve, while avoiding damage to the online sodium hypochlorite concentration meter by the electrode rod. The solution inside the test chamber downstream of the pulse stop valve is monitored by the online sodium hypochlorite concentration meter. After the test is completed, the solution is discharged into the recovery tank through the timed stop valve below the test chamber. The solution inside the recovery tank is then reintroduced into the electrolysis chamber by the reflux pump, thus completing the circulation of the electrolytic solution. This ensures quality inspection without affecting the efficiency of electrolysis. Attached Figure Description

[0015] Figure 1 This is a front view of the overall structure of a concentration adjustment and monitoring device for a sodium hypochlorite generator according to this utility model.

[0016] Figure 2 This is a rear view of the overall structure of a concentration adjustment and monitoring device for a sodium hypochlorite generator according to this utility model.

[0017] Figure 3 This is an open view of the overall structure of a concentration adjustment and monitoring device for a sodium hypochlorite generator according to this utility model.

[0018] Figure 4 This is a cross-sectional view of the overall structure of a concentration adjustment and monitoring device for a sodium hypochlorite generator according to this utility model.

[0019] As shown in the figure: 1. Sodium hypochlorite generator; 11. Electrolysis chamber; 111. Detection port; 112. Gas exhaust port; 113. Exhaust port; 114. Check valve; 12. Positive electrode rod; 13. Negative electrode rod; 14. Stirring shaft; 15. Drive motor; 2. Mixing tank; 3. Water storage tank; 4. Pressure pump; 5. Pulse check valve; 6. Test box; 61. Auxiliary support rod; 7. Online sodium hypochlorite concentration meter; 8. Timed check valve; 9. Recovery box; 91. Return pump. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings.

[0021] As per the instruction manual Figure 1 , 2 As shown in Figures 3 and 4, the sodium hypochlorite generator 1 includes an electrolysis chamber 11 for electrolysis, a positive electrode rod 12 and a negative electrode rod 13 inserted into the top cover of the electrolysis chamber 11, and a stirring shaft 14 passing through the bottom surface of the electrolysis chamber 11. A drive motor 15 is provided on the shaft of the stirring shaft 14. In order to discharge the hydrogen and chlorine generated by electrolysis, a gas discharge port 112 is opened on the top surface of the electrolysis chamber 11, and the gas discharge port 112 is connected to a hydrogen discharge system device for controlling the safe discharge of hydrogen. The input end of the electrolysis chamber 11 is connected to a mixing tank 2 that provides brine and a water storage tank 3 that provides soft water. In order to ensure the output pressure, both the mixing tank 2 and the water storage tank 3 are connected to the input port of the sodium hypochlorite generator 1 through a pressure pump 4. Both the mixing tank 2 and the water storage tank 3 are equipped with flow meters to detect the output flow rate, thereby ensuring the accuracy of the output flow rate of the mixing tank 2 and the water storage tank 3.

[0022] To ensure timely monitoring of the sodium hypochlorite solution concentration during electrolysis and maintain the optimal concentration of the finished product, a detection port 111 for detecting sodium hypochlorite concentration is provided on the lower side wall of the electrolysis chamber 11. The output of the detection port 111 is equipped with a timed pulse stop valve 5. The output of the pulse stop valve 5 is equipped with a test chamber 6 for storing the test solution. Inside the test chamber 6 is an online sodium hypochlorite concentration meter 7 for monitoring the concentration of the test solution. The online sodium hypochlorite concentration meter 7 uses DERACE sodium hypochlorite (DERACE sodium hypochlorite operates on a clever principle: it uses an LED light source to emit a beam of parallel light, which is precisely guided by a series of optical elements to align the light with the measured medium). In the process of light contact with the medium, total internal reflection and refraction occur, creating two regions of light and dark. The instrument captures these changes in brightness using a high-resolution CCD sensor, thereby determining the critical angle of the measured medium. Combining the known prism refractive index with a specific calculation formula, the instrument can quickly calculate the refractive index of the measured medium and convert it into the corresponding mass concentration for display and output. This detection method is not only accurate but also highly stable. Because only the totally internally reflected light beam is used for calculation, the presence of bubbles, suspended particles, or impurities in the measured medium will not interfere with the detection results. This greatly improves the accuracy and reliability of the detection, while also reducing maintenance costs (as the instrument requires no consumables and is maintenance-free).

[0023] To prevent the pulse stop valve 5 from becoming conductive and damaging the online sodium hypochlorite concentration meter 7, the pulse stop valve 5 is made of a non-conductive structure. In order to make full use of the test solution, the bottom surface of the test box 6 is provided with a recovery box 9 connected by a timed stop valve 8, and the bottom output end of the recovery box 9 is provided with a reflux pump 91 that returns the test result back to the electrolysis chamber 11, so that the test solution forms a complete cycle and can ensure that the test solution is not discarded due to testing.

[0024] To ensure the stability of the connection between the test box 6 and the recycling box 9, the output port of the test box 6 is located on the bottom surface of the test box 6, and the input port of the recycling box 9 is located on the top surface of the recycling box 9. The output and input ports of the two are connected by a timed stop valve 8. Several auxiliary support rods 61 are provided between the bottom surface of the test box 6 and the top surface of the recycling box 9 to ensure the connection stability between the test box 6 and the recycling box 9. In order to ensure that the output efficiency of the liquid output by the reflux pump 91 is not affected by water pressure, the output connection port of the reflux pump 91 of the electrolysis chamber 11 is located on the top surface of the side wall of the electrolysis chamber 11.

[0025] To ensure faster discharge and flow control of the sodium hypochlorite product, a discharge port 113 for discharging the sodium hypochlorite solution product is provided on one side of the bottom surface of the electrolysis chamber 11, and a stop valve 114 is provided at the output end of the discharge port 113.

[0026] In practical implementation, according to the required amount, the amount to be added is input into the controllers of mixing tank 2 and water storage tank 3. Then, the pressurization pumps 4 of both tanks are started to inject water into the electrolysis chamber 11. The output of mixing tank 2 and water storage tank 3 is calculated using flow meters inside the two tanks. After the raw material injection is completed, the valves inside mixing tank 2 and water storage tank 3 are closed. Then, the positive electrode rod 12 and negative electrode rod 13 are started simultaneously, along with the drive motor 15. The raw liquid is stirred by the stirring shaft disc 14 above the drive motor 15 to ensure the stability of the electrolysis rate. After preliminary electrolysis, the timed stop valve 8 and reflux pump 91 are started sequentially to ensure that there is no liquid to be tested inside the test tank 6. The pulse stop valve 5 is activated to discharge the solution inside the electrolysis chamber 11 into the test tank 6 under gravity. After it is full, the pulse stop valve 5 is automatically closed. The concentration of the test solution is detected by the online sodium hypochlorite concentration meter 7 inside the test tank 6. After the monitoring is completed, the timer stop valve 8 and the reflux pump 91 are activated again to complete the quality inspection cycle. The activation interval of the pulse stop valve 5 is determined according to the total activation time of the timer stop valve 8 and the reflux pump 91. When the detected data is qualified, the online sodium hypochlorite concentration meter 7 issues a qualified prompt, thereby disconnecting the current of the positive electrode rod 12 and the negative electrode rod 13. After a period of stirring, the drive motor 15 is stopped, the stop valve 114 is opened, and the finished product is released.

[0027] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A concentration adjustment and monitoring device for a sodium hypochlorite generator, comprising a sodium hypochlorite generator (1), wherein the input end of the sodium hypochlorite generator (1) is provided with a mixing tank (2) for providing brine and a water storage tank (3) for providing soft water, wherein the mixing tank (2) and the water storage tank (3) are both connected to the input port of the sodium hypochlorite generator (1) via a pressure pump (4); The sodium hypochlorite generator (1) includes an electrolysis chamber (11) for electrolysis, a positive electrode rod (12) and a negative electrode rod (13) inserted into the top cover of the electrolysis chamber (11), and a stirring shaft disk (14) passing through the bottom surface of the electrolysis chamber (11). A drive motor (15) is provided on the shaft of the stirring shaft disk (14). The generator is characterized by: The electrolysis chamber (11) has a detection port (111) for detecting sodium hypochlorite concentration at the lower side wall. The output end of the detection port (111) is equipped with a pulse stop valve (5) that opens and closes at a time. The output end of the pulse stop valve (5) is equipped with a test box (6) for storing the test liquid. The test box (6) is equipped with an online sodium hypochlorite concentration meter (7) for monitoring the concentration of the test liquid. The bottom surface of the test box (6) is equipped with a recovery box (9) connected by a timed stop valve (8). The bottom surface of the recovery box (9) is equipped with a reflux pump (91) that returns the detected instrument back to the electrolysis chamber (11).

2. The concentration adjustment and monitoring device for a sodium hypochlorite generator according to claim 1, characterized in that: The output port of the test box (6) is located on the bottom surface of the test box (6), the input port of the recycling box (9) is located on the top surface of the recycling box (9), and a number of auxiliary support rods (61) are provided between the bottom surface of the test box (6) and the top surface of the recycling box (9).

3. The concentration adjustment and monitoring device for a sodium hypochlorite generator according to claim 1, characterized in that: The top surface of the electrolysis chamber (11) is provided with a gas discharge port (112) for discharging gas.

4. The concentration adjustment and monitoring device for a sodium hypochlorite generator according to claim 1, characterized in that: The output port of the reflux pump (91) of the electrolysis chamber (11) is located on the top surface of the side wall of the electrolysis chamber (11).

5. The concentration adjustment and monitoring device for a sodium hypochlorite generator according to claim 1, characterized in that: The bottom side of the electrolysis chamber (11) is provided with a discharge port (113) for discharging sodium hypochlorite solution, and the output end of the discharge port (113) is provided with a stop valve (114).

6. The concentration adjustment and monitoring device for a sodium hypochlorite generator according to claim 1, characterized in that: Both the mixing tank (2) and the water storage tank (3) are equipped with flow meters to detect the output.

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