Sodium hypochlorite generator

Abstract

The invention discloses a sodium hypochlorite generator, including a water softener, a water inlet of the water softener connected to a water inlet pipe, a water outlet of the water softener communicated with a water inlet of a salt dissolving box through a pipeline, a water outlet of the salt dissolving box communicated with a pipeline mixer through a pipeline, another water outlet of the water softener communicated with a pipeline mixer through a pipeline, a water outlet of the pipeline mixer communicated with a multifunctional reactor through a pipeline, the multifunctional reactor comprises a tank body, an exhaust port is provided at the upper end of the tank body, a heat exchanger is provided at the bottom of the tank body cavity, the water outlet of the pipeline mixer is communicated with one end of the heat exchanger through a pipeline, the other end of the heat exchanger is communicated with an electrolyzer liquid inlet through a pipeline, the liquid outlet of the electrolyzer is communicated with the upper part of the tank body cavity through a pipeline, and the lower part of the tank body cavity is communicated with a sodium hypochlorite storage tank. The structure of the invention is reasonable, solves the problem that the electrolyzer is easy to burn dry and easy to scale, makes the salt dissolution more thorough, can accurately calculate the salinity, effectively improves the production efficiency, and solves the problem of hydrogen generation hazards.

Description

Technical Field

[0001] The invention relates to the technical field of disinfection generators, in particular to a sodium hypochlorite generator. Background Art

[0002] Sodium hypochlorite generator is mainly used to electrolyze salt water and produce sodium hypochlorite for tap water disinfection. As a bactericidal disinfectant, sodium hypochlorite can not only disinfect, but also be used safely. Because it does not produce by-products in the process of sterilizing water, it better protects the original quality of water and has become one of the ideal bactericidal disinfectants.

[0003] With the continuous development of science and technology, the application and production technology of sodium hypochlorite are also gradually improving. However, the existing sodium hypochlorite production device produces sodium hypochlorite solution by electrolyzing salt. Calcium, magnesium and other deposits are easily formed on the surface of the motor, and the electrodes need to be cleaned frequently, resulting in low production efficiency and high production costs. In view of the above problems, it is urgently necessary to carry out innovative design based on the original sodium hypochlorite production device.

[0004] When the existing sodium hypochlorite generator is in operation, the anode produces chlorine and the cathode produces hydrogen. The chlorine produced by the anode reacts with the sodium hydroxide in the electrolyte to produce sodium hypochlorite, and the hydrogen produced by the cathode naturally escapes into the air. When the concentration of hydrogen mixed with air reaches a certain level, it will be harmful to the human body, and improper operation will cause explosion.

[0005] Therefore, how to design a sodium hypochlorite generator that can solve the above-mentioned technical problems is a topic that the inventor has devoted himself to studying. Summary of the invention

[0006] The purpose of the present invention is to provide a sodium hypochlorite generator with a reasonable structural design, which solves the problems of easy drying and scaling of the electrolytic cell, makes the salt dissolve more thoroughly, can accurately calculate the salinity, effectively improves the production efficiency, and solves the problem of the harm of hydrogen generation.

[0007] In order to achieve the above-mentioned purpose, the technical solution of the present invention is: a sodium hypochlorite generator, which includes a water softener, a water inlet of the water softener is connected to a water inlet pipe, a water outlet of the water softener is communicated with the water inlet of a salt dissolving box through a pipeline, the water outlet of the salt dissolving box is communicated with a pipeline mixer through a pipeline, another water outlet of the water softener is communicated with the pipeline mixer through a pipeline, the water outlet of the pipeline mixer is communicated with a multifunctional reactor through a pipeline, the multifunctional reactor includes a tank body, an exhaust port is provided at the upper end of the tank body, a heat exchanger is provided at the bottom of the inner cavity of the tank body, the water outlet of the pipeline mixer is communicated with one end of the heat exchanger through a pipeline, the other end of the heat exchanger is communicated with the liquid inlet of an electrolyzer through a pipeline, the liquid outlet of the electrolyzer is communicated with the upper part of the inner cavity of the tank body through a pipeline, and the lower part of the inner cavity of the tank body is communicated with a sodium hypochlorite storage tank.

[0008] The sodium hypochlorite generator of the present invention, wherein the salt dissolving box comprises a box body, a salt filtering layer is arranged at the lower part of the inner cavity of the box body, and the salt filtering layer is arranged above the salt in the salt dissolving box.

[0009] The sodium hypochlorite generator of the present invention further comprises a saturated brine tank, which is connected to the salt dissolving tank through a pipeline, and the saturated brine tank is connected to the pipeline mixer through a connecting pipe, and a brine pump is provided on the connecting pipe.

[0010] In the sodium hypochlorite generator of the present invention, a salt water filter is installed on the pipeline between the pipeline mixer and the multifunctional reactor, and the shells of the pipeline mixer and the salt water filter are both made of transparent materials.

[0011] In the sodium hypochlorite generator of the present invention, a liquid distribution and salinity control instrument is installed on the pipeline between the salt water filter and the multifunctional reactor.

[0012] The sodium hypochlorite generator of the present invention, wherein the heat exchanger adopts a heat exchange coil made of titanium material.

[0013] The sodium hypochlorite generator of the present invention, wherein the upper part of the inner cavity of the tank body is connected with the fan through a pipeline.

[0014] In the sodium hypochlorite generator of the present invention, the positive and negative poles of the power output of the electrolytic cell are connected to the electrical control circuit, and the electrical control circuit switches the positive and negative poles of the power supply for conversion.

[0015] The sodium hypochlorite generator of the present invention, wherein the exhaust port of the electrolytic cell is connected to an exhaust pipe, the exhaust pipe is installed with an exhaust valve, the exhaust valve comprises a shell, the shell has a channel penetrating the upper and lower ends thereof, the channel is communicated with the exhaust pipe, the channel is a stepped hole with a small upper portion and a large lower portion, a sealing ring is installed at the upper step surface in the channel, a floating ball is arranged at the lower portion of the channel, and the cross-sectional dimension of the floating ball is smaller than the cross-sectional dimension of the lower portion of the channel and larger than the cross-sectional dimension of the upper portion of the channel.

[0016] The sodium hypochlorite generator of the present invention, wherein the sodium hypochlorite storage tank is installed with a water level sensor, and the water inlet pipe is installed with a water inlet solenoid valve, when the water level sensor measures that the liquid level in the sodium hypochlorite storage tank reaches a specified low liquid level, the detection signal is fed back to the controller, and the controller controls the water inlet solenoid valve to open automatically.

[0017] After adopting the above scheme, the sodium hypochlorite generator of the present invention has the following beneficial effects:

[0018] 1. By arranging a multifunctional reactor after the electrolytic cell, when the heated sodium hypochlorite enters the first tank cavity of the multifunctional reactor, the residual heat generated keeps the salt solution at a certain temperature, and the salt solution is not easy to freeze in winter. In addition, the multifunctional reactor can separate gas and water, dilute the concentration of hydrogen, and make hydrogen emission safer;

[0019] 2. By setting the shells of the brine filter and the pipeline mixer to be made of transparent materials, the impurities in the filtered salt can be better observed, the electrolytic cell can be protected, the salt can be dissolved more thoroughly, energy consumption can be reduced, and the efficiency of the product can be improved;

[0020] 3. The generator can make full use of the space of the electrolytic cell through experiments, and will not cause the reaction electrode to dry out due to the air filling the upper part of the electrolytic cell. By connecting the positive and negative poles of the power output of the electrolytic cell with the electrical control circuit, the positive and negative poles of the electrolytic cell are switched, which effectively reduces the generation of scale and ensures that the concentration of the brine entering the electrolytic cell is 3%-5%, thereby improving production efficiency and reducing energy consumption and failure rate.

[0021] 4. By installing a liquid control salinity meter on the pipeline between the brine filter and the multi-functional reactor, the brine concentration can be accurately controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of an embodiment of a sodium hypochlorite generator of the present invention;

[0023] Figure 2 It is a circuit diagram of connecting the positive and negative electrodes of the electrolytic cell power supply output and the electrical control circuit according to an embodiment of the present invention;

[0024] Figure 3 It is a schematic diagram of the exhaust valve structure of the electrolytic cell according to an embodiment of the present invention.

[0025] The present invention will be further described below by way of embodiments in conjunction with the accompanying drawings; DETAILED DESCRIPTION

[0026] like Figure 1The schematic diagram of the structure of the embodiment of the sodium hypochlorite generator of the present invention is shown, which includes a water softener 1, which is an existing product, and its water inlet is connected to a water inlet pipe 2, and the water inlet pipe 2 is connected to tap water. In this embodiment, a water inlet solenoid valve 3 is installed on the water inlet pipe 2. One of the water outlets of the water softener 1 is connected to the water inlet of the salt dissolving tank 4 through a pipeline. The salt dissolving box 4 includes a box body 5, a salt filter layer 6 is provided at the lower part of the inner cavity of the box body 5, and the salt filter layer 6 is arranged on the salt placed at the bottom of the inner cavity of the box body 5. The salt filter layer 6 is used to filter the salt. Saturated brine can be prepared through the salt dissolving box 4. The liquid outlet of the box body 5 of the salt dissolving box 4 is connected with the saturated brine tank 7 through a pipeline. The prepared saturated brine enters the saturated brine tank 7 from the salt dissolving box 4 through a pipeline. The saturated brine tank 7 is used to store saturated brine. The saturated brine tank 7 is connected with the pipeline mixer 9 through a connecting pipe 8. The pipeline mixer 9 includes a tubular first shell 10 made of a transparent material, and a stirring structure 11 is arranged in the first shell 10. The first shell 10 is arranged to be made of a transparent material so that the stirring structure 11 in the inner cavity of the first shell 10 can be easily observed. The brine pump 12 is installed on the connecting pipe 8. The other water outlet of the water softener 1 is connected to the inner cavity of the first shell 10 of the pipeline mixer 9 through a pipeline. The softened water from the water softener 1 is used as dilution water. The pipeline mixer 9 is used to stir the saturated brine and softened water entering the inner cavity of its first shell 10, thereby diluting the concentration of the brine. The water outlet of the first shell 10 of the pipeline mixer 9 is connected to the multifunctional reactor 13 through a pipeline. The multifunctional reactor 13 is used for waste heat recovery, gas-water separation, and dilution of hydrogen.

[0027] The multifunctional reactor 13 of this embodiment includes a first tank body 14 placed vertically, and the first tank body 14 of this embodiment is made of transparent PVC material. A brine filter 15 is installed on the pipeline between the first shell 10 of the pipeline mixer 9 and the first tank body 14 of the multifunctional reactor 13, which is used to filter the impurities of the salt on the one hand, and to make the salt entering the pipeline mixer 9 more soluble on the other hand. The brine filter 15 includes a second shell 16 made of transparent material, which is convenient for observing the situation of the brine filter 15 filtering impurities, which can reduce energy consumption and improve efficiency. A liquid distribution control salinity meter 17 is installed on the pipeline between the brine filter 15 and the multifunctional reactor 13. The liquid distribution control salinity meter 17 is set, and combined with the brine pump 12 configured on the connecting pipe 8, it is used to accurately calculate the concentration of the brine entering the electrolytic cell 20, which can ensure that the concentration of the brine entering the electrolytic cell is 3%-5%. In this embodiment, the concentration of the brine after dilution is ensured to be 3%.

[0028] The first tank body 14 of the multifunctional reactor 13 is provided with an exhaust port 18 at the upper end, which is mainly used to discharge hydrogen in this embodiment. A heat exchanger 19 is provided at the bottom of the inner cavity of the first tank body 14. In this embodiment, the heat exchanger 19 adopts a heat exchange coil made of titanium. The water outlet of the first shell 10 of the pipeline mixer 9 is connected to one end of the heat exchanger 19 through a pipeline, and the other end of the heat exchanger 19 is connected to the liquid inlet of the electrolytic cell 20 through a pipeline. The electrolytic cell 20 is an existing product, which includes a horizontally placed second tank body 21, and the second tank body 21 is provided with a liquid inlet.

[0029] Combination Figure 2 As shown, the positive and negative outputs of the power supply 22 of the electrolytic cell 20 are connected to the electrical control circuit 23, and the electrical control circuit 23 switches the positive and negative poles of the power supply 22 for conversion. The electrical control circuit 23 is set to switch the positive and negative poles of the power supply 22 to reduce scaling.

[0030] The upper end of the second tank 21 of the electrolytic cell 20 is provided with an exhaust port, to which an exhaust pipe 24 is connected, and an exhaust valve 25 is installed on the exhaust pipe 24, which is used to exhaust the air brought into the electrolytic cell 20 to prevent the electrode from drying out. Figure 3 As shown, the exhaust valve 25 includes a third housing 26, and the third housing 26 has a channel 27 that passes through the upper and lower ends thereof. The channel 27 is connected to the exhaust pipe 24, and the channel 27 is a stepped column hole with a small upper part and a large lower part. In this embodiment, the third housing 26 is composed of an upper pipe head 28 and a lower pipe head 29 connected up and down, and a first sealing ring 30 is arranged between the upper pipe head 28 and the lower pipe head 29. In this embodiment, the lower end of the upper pipe head 28 is connected to the upper end of the inner cavity of the lower pipe head 29, and the inner diameter of the upper pipe head 28 is smaller than the inner diameter of the lower pipe head 29, thereby forming a stepped column hole-shaped channel 27. A second sealing ring 31 is installed at the step surface in the channel 27, that is, the lower end of the inner cavity of the upper pipe head 28, and a floating ball 32 is arranged at the lower part of the channel 27, that is, the inner cavity of the lower pipe head 29, and the cross-sectional size of the floating ball 32 is smaller than the inner diameter of the lower pipe head 29 and larger than the inner diameter of the upper pipe head 28. Before the float 32 floats to the second sealing ring 31 under the buoyancy of the salt water, the float 32 floats on the salt water, but is separated from the second sealing ring 31. At this time, the exhaust pipe 24 can continue to discharge the gas. When the salt water rises and the float 32 is pushed against the second sealing ring 31 under the buoyancy of the salt water, the exhaust pipe 24 is closed and the gas is no longer discharged.

[0031] The liquid outlet on the second tank body 21 of the electrolytic cell 20 is connected to the upper part of the inner cavity of the first tank body 14 through a pipeline, and the lower part of the inner cavity of the first tank body 14 is connected to the sodium hypochlorite storage tank 33. The bottom liquid outlet of the first tank body 14 and the storage tank 33 form a communicating vessel structure. The first tank body 14 has a liquid level display function. The high position of the storage tank 33 is the effective liquid level mark point. If the liquid level mark point is exceeded, the system stops working. A water level sensor is installed on the storage tank 33. When the water level sensor measures that the liquid level in the storage tank 33 reaches the specified low liquid level, the detection signal is fed back to the controller, and the controller controls the water inlet solenoid valve 3 to open.

[0032] The upper part of the inner cavity of the first tank body 14 is connected to the fan 34 through a pipeline. The hydrogen after gas-water separation in the first tank 14 is introduced into a large amount of air through the fan 34 to dilute the hydrogen concentration. The fan 34 dilutes the hydrogen concentration to ≤ 0.8%, so that the hydrogen discharged to the outside is absolutely safe.

[0033] During operation, when the water level sensor measures that the liquid level of the sodium hypochlorite storage tank 33 reaches the specified low liquid level, the detection signal is fed back to the controller, and the controller controls the water inlet solenoid valve 3 to open automatically, and the tap water enters the softener 1 through the water inlet pipe 2 to form softened water. The softened water is divided into two paths: one path enters the salt dissolving box 4 to prepare saturated brine, and the other path is used as dilution water. The saturated brine is accurately mixed with dilution water to a ratio of 3% brine through the brine pump 12 and the liquid distribution control salinity meter 17, and then enters the second tank 21 of the electrolytic cell 20. When the brine level in the second tank 21 reaches the full level, the rectifier of the electrolytic cell 20 automatically opens and starts working, and electrolysis produces 0.8% sodium hypochlorite solution and a small amount of H2. In the first tank 14 of the multifunctional reactor 13, gas and water are naturally separated, and H2 is discharged to the outside through the exhaust pipe 24. The sodium hypochlorite solution is stored in the storage tank 33 after heat recovery for addition.

[0034] The sodium hypochlorite solution generates a large amount of heat during the electrolysis process, which is preheated and reused by the titanium heat exchanger 19 arranged at the bottom of the inner cavity of the first tank body 14, thereby improving system performance when the temperature is low in winter.

[0035] In the production process of the present invention, 350L of H2 will be generated for every 1kg of sodium hypochlorite produced, and the lower part of the inner cavity of the first tank body 14 is a sodium hypochlorite solution, which will produce H2, which has a gas-water separation effect.

[0036] When the liquid level in the second tank body 21 of the storage tank 33 reaches a high liquid level, the rectifier of the electrolytic cell 20 is automatically turned off, the brine pump 12 is turned off, and the water inlet solenoid valve 3 is closed.

[0037] During operation, if the liquid level in the second tank 21 of the electrolytic cell 20 is abnormal, the equipment will shut down, the rectifier of the electrolytic cell 20 will automatically shut down, the brine pump 12 will shut down, the water inlet solenoid valve 3 will shut down, and an audible and visual alarm will be given.

[0038] During operation, if the outlet water temperature exceeds 60°C, the equipment will shut down, the rectifier of the electrolytic cell 20 will automatically shut down, the brine pump 12 will be turned off, the water inlet solenoid valve 3 will be closed, and an audible and visual alarm will be given.

[0039] The sodium hypochlorite generator of the present invention is provided with a multifunctional reactor 13 behind the electrolytic cell 20. When the sodium hypochlorite with temperature enters the inner cavity of the first tank body 14 of the multifunctional reactor 13, the residual heat generated keeps the salt solution at a certain temperature, and the salt solution is not easy to freeze in winter. In addition, the multifunctional reactor 13 can separate gas and water, and can dilute the concentration of hydrogen, making the hydrogen emission safer. By setting the first shell 10 of the pipeline mixer 9 and the second shell 16 of the salt water filter 15 to be made of transparent materials, the impurities of the filtered salt can be better observed. The electrolytic cell 20 is protected, the salt is dissolved more thoroughly, the energy consumption is reduced, and the use efficiency of the product is improved; the sodium hypochlorite generator of the present invention can make full use of the space of the electrolytic cell 20, and will not cause the reaction electrode to dry out due to the air filling the upper part of the electrolytic cell 20. The positive and negative electrodes of the power supply 22 of the electrolytic cell 20 are connected to the electrical control circuit 23, so that the positive and negative electrodes of the electrolytic cell 20 are switched, the scale generation is effectively reduced, and the concentration of the salt water entering the electrolytic cell 20 is ensured to be 3%-5%, which improves the production efficiency, reduces the energy consumption and the failure rate. The salinity can be accurately controlled by installing a liquid distribution control salinity meter 17 on the pipeline between the salt water filter 15 and the multifunctional reactor 13.

[0040] The above-described embodiments are merely descriptions of preferred implementations of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field shall fall within the protection scope of the claims of the present invention.

Claims

1. A sodium hypochlorite generator, characterized in that: It comprises a water softener, wherein the water inlet of the water softener is connected to a water inlet pipe, a water outlet of the water softener is communicated with the water inlet of a salt dissolving box through a pipeline, the water outlet of the salt dissolving box is communicated with a pipeline mixer through a pipeline, another water outlet of the water softener is communicated with the pipeline mixer through a pipeline, the water outlet of the pipeline mixer is communicated with a multifunctional reactor through a pipeline, the multifunctional reactor comprises a tank body, an exhaust port is provided at the upper end of the tank body, a heat exchanger is provided at the bottom of the inner cavity of the tank body, the water outlet of the pipeline mixer is communicated with one end of the heat exchanger through a pipeline, the other end of the heat exchanger is communicated with the liquid inlet of an electrolyzer through a pipeline, the liquid outlet of the electrolyzer is communicated with the upper part of the inner cavity of the tank body through a pipeline, and the lower part of the inner cavity of the tank body is communicated with a sodium hypochlorite storage tank; The positive and negative poles of the power output of the electrolytic cell are connected to the electrical control circuit, and the electrical control circuit switches the positive and negative poles of the power supply for conversion; An exhaust pipe is connected to the exhaust port of the electrolytic cell, an exhaust valve is installed on the exhaust pipe, and the exhaust valve includes a shell having a channel passing through the upper and lower ends thereof, and the channel is connected to the exhaust pipe.

2. The sodium hypochlorite generator according to claim 1, characterized in that: The salt dissolving box comprises a box body, a salt filtering layer is arranged at the lower part of the inner cavity of the box body, and the salt filtering layer is arranged on the top of the salt in the salt dissolving box.

3. The sodium hypochlorite generator according to claim 1, characterized in that: It also includes a saturated brine tank, which is connected to the salt dissolving tank through a pipeline, and the saturated brine tank is connected to the pipeline mixer through a connecting pipe, and a brine pump is provided on the connecting pipe.

4. The sodium hypochlorite generator according to claim 1, characterized in that: A salt water filter is installed on the pipeline between the pipeline mixer and the multifunctional reactor, and the shells of the pipeline mixer and the salt water filter are both made of transparent materials.

5. The sodium hypochlorite generator according to claim 4, characterized in that: A liquid distribution and salinity control instrument is installed on the pipeline between the brine filter and the multifunctional reactor.

6. The sodium hypochlorite generator according to claim 1, characterized in that: The heat exchanger adopts a heat exchange coil made of titanium material.

7. The sodium hypochlorite generator according to claim 1, characterized in that: The upper part of the inner cavity of the tank body is communicated with the fan through a pipeline.

8. The sodium hypochlorite generator according to claim 1, characterized in that: The channel is a stepped hole with a small upper portion and a large lower portion, a sealing ring is installed at the upper step surface in the channel, a floating ball is arranged at the lower portion of the channel, and the cross-sectional dimension of the floating ball is smaller than the lower cross-sectional dimension of the channel and larger than the upper cross-sectional dimension of the channel.

9. The sodium hypochlorite generator according to claim 1, characterized in that: The sodium hypochlorite storage tank is equipped with a water level sensor, and the water inlet pipe is equipped with a water inlet solenoid valve. When the water level sensor measures that the liquid level in the sodium hypochlorite storage tank reaches a specified low liquid level, the detection signal is fed back to the controller, and the controller controls the water inlet solenoid valve to open automatically.

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