Pickling-free electrolytic sodium hypochlorite generation system

Abstract

The utility model discloses a pickling-free electrolytic sodium hypochlorite generation system which comprises a water softener, a water storage tank, a dilute brine tank, a strong magnetic mechanism, a fluid director, an electrolytic bath and a liquid storage tank which are sequentially arranged from front to back, an electromagnetic flowmeter is arranged at the liquid outlet end of the flow rate adjusting pump; the strong magnetic mechanism comprises a first strong magnetic descaling device and a plurality of second strong magnetic descaling devices which are arranged in parallel, the liquid outlet ends and the liquid inlet ends of the first strong magnetic descaling device and the second strong magnetic descaling devices as well as the adjacent second strong magnetic descaling devices are connected, and electromagnetic valves are arranged on connecting pipelines; flushing branch pipes are arranged at the liquid inlet end and the liquid outlet end of the electrolytic bath respectively, and flushing electromagnetic valves are arranged on the flushing branch pipes; and the water storage tank is connected with a flushing branch pipe at the liquid inlet end of the electrolytic bath through a booster pump.

Description

Technical Field

[0001] The utility model belongs to the technical field of sodium hypochlorite generating equipment, and in particular relates to an acid-wash-free sodium hypochlorite generating system using an electrolytic method. Background Art

[0002] During the electrolysis process of the sodium hypochlorite generator: Since the water contains calcium and magnesium ions, negative charges and hydroxide ions are generated near the cathode. Calcium and magnesium ions are positively charged ions and are easily attracted by negative charges. They combine with hydroxide ions to form calcium hydroxide that is slightly soluble in water and magnesium hydroxide that is insoluble in water. Calcium hydroxide then combines with carbon dioxide in the water to form calcium carbonate that is deposited on the cathode. During the deposition process, the particles in the water will gather around the crystal nucleus and deposit on the electrode. The prior art adds a water softener in front of the sodium hypochlorite generator, which can slow down scaling and extend the pickling time. However, pickling is generally required once every six months, which is costly and the equipment is easily damaged by pickling.

[0003] Scaling of existing sodium hypochlorite generators often occurs on the cathode plate, which is covered with a large amount of scale layers. These scale layers block the water flow, hinder the emission of hydrogen, reduce the electrolysis efficiency, and lead to insufficient sodium hypochlorite production and increased heat generation of the electrode plate. Utility Model Content

[0004] The utility model aims to provide an acid-wash-free electrolytic sodium hypochlorite generation system, which aims to prevent scaling of electrodes in an electrolytic cell and improve the electrolysis efficiency of sodium hypochlorite.

[0005] The utility model is mainly realized through the following technical solutions:

[0006] A sodium hypochlorite generation system without acid washing by electrolysis method, comprising a water softener, a water storage tank, a dilute brine tank, a strong magnetic mechanism, a flow guide, an electrolytic cell and a liquid storage tank arranged in sequence from front to back, wherein the water inlet of the water softener is connected to tap water, a flow rate regulating pump is installed between the strong magnetic mechanism and the flow guide, and an electromagnetic flowmeter is arranged at the liquid outlet of the flow rate regulating pump; the strong magnetic mechanism comprises a first strong magnetic descaling device and a plurality of second strong magnetic descaling devices arranged in parallel, wherein the first strong magnetic descaling device and the second strong magnetic descaling device are connected to each other by a plurality of strong magnetic descaling devices. The liquid outlet end of the strong magnetic descaling device and the adjacent second strong magnetic descaling device are connected to the liquid inlet end, and a solenoid valve is provided on the connecting pipeline; the liquid outlet end of the dilute brine tank is connected to the liquid inlet end of the first strong magnetic descaling device and the second strong magnetic descaling device through a solenoid valve, and the liquid outlet end of the guide device is provided with a solenoid valve; the liquid inlet end and liquid outlet end of the electrolytic cell are respectively provided with flushing branches, and the flushing branches are provided with a flushing solenoid valve; the water storage tank is connected to the flushing branch at the liquid inlet end of the electrolytic cell through a booster pump.

[0007] In order to better realize the utility model, it further includes a salt dissolving box and a cooling water tank, the water outlet ends of the water storage tank are respectively connected to the salt dissolving box and the cooling water tank, the salt dissolving box and the cooling water tank are respectively connected to the dilute brine tank through a salt solution delivery pump and a dilution water delivery pump, the salt dissolving box and the dilute brine tank are respectively provided with a stirring mechanism and a salt dissolving air pump; the salt dissolving box and the dilute brine tank are respectively provided with a salinity meter, the cooling water tank and the dilute brine tank are respectively provided with a temperature sensor, and the water outlet ends of the salt solution delivery pump and the dilution water delivery pump are respectively provided with an electromagnetic flowmeter.

[0008] In order to better realize the utility model, further, a plurality of flushing nozzles are arranged inside the electrolytic cell near the electrodes, and the flushing branch pipes at the liquid inlet end of the electrolytic cell are connected to the flushing nozzles.

[0009] In order to better realize the utility model, further, a spiral channel is arranged inside the deflector.

[0010] In order to better realize the utility model, further, an arc-shaped channel is provided inside the deflector, and the inner diameter thereof gradually decreases near the electrolytic cell.

[0011] In order to better implement the utility model, further, the connection end between the deflector and the electrolytic cell is arranged close to the negative electrode.

[0012] In order to better realize the utility model, further, the magnetic field strength of the first strong magnetic descaling device and the second strong magnetic descaling device is ≥3000 Gauss.

[0013] The beneficial effects of the utility model are as follows:

[0014] (1) The utility model pre-treats tap water through a water softener, and then performs secondary treatment on the water through a strong magnetic mechanism, thereby changing the particle size of the particles in the water and reducing scaling at the electrodes; further, the pre-treated water in the water storage tank is used by a booster pump to high-pressure flush the electrolytic cell, and in particular, the electrodes can be flushed in a targeted manner through a flushing nozzle, thereby achieving acid-free washing of the electrolytic sodium hypochlorite generation system. In the strong magnetic mechanism, the capacity of the magnetization treatment can be increased by a first strong magnetic descaling device and a plurality of second strong magnetic descaling devices arranged in parallel; the magnetization treatment effect can be enhanced and the efficiency of the magnetization treatment can be ensured by interconnecting the first strong magnetic descaling device and the second strong magnetic descaling device or the interconnected second strong magnetic descaling devices, and the utility model has good practicality;

[0015] (2) The utility model adjusts the temperature of the dilute brine tank and the concentration of the solution in the dilute brine tank by dilution through a cooling water tank; configures a saturated solution through a salt dissolving tank, shortens the processing time of the system, and can pre-filter the filter residue in the salt solution; can adjust the added ratio through a salt solution delivery pump and a dilution water delivery pump, effectively prepare the dilute solution, and has good practicality;

[0016] (3) The utility model can adjust the reaction efficiency in the electrolytic cell through a flow rate regulating pump and a flow guide, and can quickly mix the solution after magnetization treatment through the spiral channel inside the flow guide to improve the uniformity of the solution; the flow rate of the liquid poured into the electrolytic cell can be accelerated through the arc channel inside the flow guide to quickly impact the negative electrode that is prone to scaling, and has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the electrolytic sodium hypochlorite generation system in Example 1;

[0018] Figure 2 Schematic diagram of the structure of the electrolytic sodium hypochlorite generation system in Example 2.

[0019] Among them: 1-water softener, 2-water storage tank, 3-salt dissolving tank, 4-cooling water tank, 5-diluted brine tank, 6-first strong magnetic descaling device, 7-second strong magnetic descaling device, 8-flow guide, 9-electrolyzer, 10-liquid storage tank, 11-water storage chamber, 12-salt solution delivery pump, 13-dilution water delivery pump, 14-boosting pump. DETAILED DESCRIPTION

[0020] Embodiment 1:

[0021] An acid-free electrolytic sodium hypochlorite generation system, such as Figure 1As shown, it includes a water softener 1, a water storage tank 2, a dilute brine tank 5, a strong magnetic mechanism, a deflector 8, an electrolytic cell 9 and a liquid storage tank 10 which are arranged in sequence from front to back. The water inlet end of the water softener 1 is connected to tap water, a flow rate regulating pump is installed between the strong magnetic mechanism and the deflector 8, and an electromagnetic flowmeter is arranged at the liquid outlet end of the flow rate regulating pump; the strong magnetic mechanism includes a first strong magnetic descaling device 6 and a plurality of second strong magnetic descaling devices 7 which are arranged in parallel, the liquid outlet ends of the first strong magnetic descaling device 6 and the second strong magnetic descaling device 7 and the adjacent second strong magnetic descaling devices 7 are connected to the liquid inlet end, and a solenoid valve is arranged on the connected pipeline; the liquid outlet end of the dilute brine tank 5 is connected to the liquid inlet ends of the first strong magnetic descaling device 6 and the second strong magnetic descaling device 7 respectively through a solenoid valve, and the liquid outlet end of the deflector 8 is provided with a solenoid valve. Preferably, the liquid outlet of the first strong magnetic descaling device 6 and the liquid inlet of the second strong magnetic descaling device 7 are respectively provided with a water storage chamber 11 for caching the solution. Specifically, the magnetic field strength of the first strong magnetic descaling device 6 and the second strong magnetic descaling device 7 is ≥3000 Gauss. The deflector 8 is provided with a spiral channel inside.

[0022] Preferably, if Figure 1 As shown, tap water enters the water softener 1 for treatment and then is introduced into the water storage tank 2. The water storage tank 2 introduces the pre-treated tap water into the dilute brine tank 5 and the salt dissolving tank 3 through branch pipes, and the two branch pipes are respectively provided with a dilution water delivery pump 13 and a salt solution delivery pump 12, and the liquid outlets of the dilution water delivery pump 13 and the salt solution delivery pump 12 are respectively provided with electromagnetic flowmeters. The liquid outlet of the dilute brine tank 5 is respectively connected to the first strong magnetic descaling device 6 and two second strong magnetic descaling devices 7 arranged in parallel. Specifically, the liquid inlet and liquid outlet of the electrolytic cell 9 are respectively provided with flushing branches, and the flushing branches are provided with flushing solenoid valves.

[0023] The utility model first pre-treats tap water through a water softener 1 to remove a large amount of calcium and magnesium ions; then, the saturated salt solution derived from the salt dissolving box 3 is diluted by tap water to obtain dilute salt water suitable for electrolysis, and then the first strong magnetic descaling device 6 and several second strong magnetic descaling devices 7 are used for strong magnetic magnetization, and the particle size of the particles in the water changes, making it difficult to adhere to the cathode. Thereby reducing the possibility of electrode scaling. Finally, the pre-treated water in the water storage tank 2 is used by the booster pump 14 to high-pressure wash the electrolytic cell 9, and in particular, the electrodes can be flushed in a targeted manner through the flushing nozzle to achieve the acid-free washing of the electrolytic sodium hypochlorite generation system. In the strong magnetic mechanism, the utility model can increase the capacity of the magnetization treatment through the first strong magnetic descaling device 6 and the two second strong magnetic descaling devices 7 arranged in parallel; and can also enhance the magnetization treatment effect and ensure the efficiency of the magnetization treatment through the interconnected first strong magnetic descaling device 6 and the second strong magnetic descaling device 7 or the interconnected second strong magnetic descaling devices 7, and has good practicality.

[0024] Embodiment 2:

[0025] An acid-free electrolytic sodium hypochlorite generation system, such as Figure 2 As shown, it includes a water softener 1, a water storage tank 2, a salt dissolving tank 3, a cooling water tank 4, a dilute brine tank 5, a strong magnetic mechanism, a deflector 8, an electrolytic cell 9 and a liquid storage tank 10, which are arranged in sequence from front to back; a flow rate regulating pump is installed between the strong magnetic mechanism and the deflector 8, and an electromagnetic flowmeter is provided at the liquid outlet of the flow rate regulating pump.

[0026] The water inlet of the water softener 1 is connected to tap water, and the water outlet of the water storage tank 2 is connected to the salt dissolving tank 3 and the cooling water tank 4 respectively. The salt dissolving tank 3 and the cooling water tank 4 are connected to the dilute brine tank 5 through the salt solution delivery pump 12 and the dilution water delivery pump 13 respectively. The salt dissolving tank 3 and the dilute brine tank 5 are respectively provided with a stirring mechanism and a salt dissolving air pump; the salt dissolving tank 3 and the dilute brine tank 5 are respectively provided with a salinity meter, the cooling water tank 4 and the dilute brine tank 5 are respectively provided with a temperature sensor, and the water outlet of the salt solution delivery pump 12 and the dilution water delivery pump 13 are respectively provided with an electromagnetic flowmeter. The liquid inlet and liquid outlet of the electrolytic cell 9 are respectively provided with a flushing branch pipe, and a flushing solenoid valve is provided on the flushing branch pipe; the water storage tank 2 is connected to the flushing branch pipe of the liquid inlet end of the electrolytic cell 9 through a booster pump 14. Specifically, a plurality of flushing nozzles are provided near the electrodes inside the electrolytic cell 9, and the flushing branch pipe at the liquid inlet end of the electrolytic cell 9 is connected with the flushing nozzle.

[0027] Preferably, the strong magnetic mechanism includes a first strong magnetic descaling device 6 and a plurality of second strong magnetic descaling devices 7 arranged in parallel, the first strong magnetic descaling device 6 is connected to the second strong magnetic descaling device 7 and the adjacent second strong magnetic descaling device 7 at the outlet and the inlet, and a solenoid valve is provided on the connected pipeline; the outlet of the dilute brine tank 5 is connected to the inlet of the first strong magnetic descaling device 6 and the second strong magnetic descaling device 7 respectively through a solenoid valve, and the outlet of the guide 8 is provided with a solenoid valve. Preferably, the outlet of the first strong magnetic descaling device 6 and the inlet of the second strong magnetic descaling device 7 are respectively provided with a water storage chamber 11 for caching the solution. Specifically, the magnetic field strength of the first strong magnetic descaling device 6 and the second strong magnetic descaling device 7 is ≥3000 Gauss.

[0028] Preferably, an arc-shaped channel is provided inside the flow guide 8, and the inner diameter gradually decreases near the electrolytic cell 9. The connection end of the flow guide 8 and the electrolytic cell 9 is provided near the negative electrode. The flow rate of the liquid poured into the electrolytic cell 9 can be accelerated through the arc-shaped channel inside the flow guide 8, and the negative electrode that is prone to scaling can be quickly impacted, which has good practicality.

[0029] The utility model adjusts the temperature of the dilute salt water tank 5 and dilutes and adjusts the concentration of the solution in the dilute salt water tank 5 through the cooling water tank 4; the saturated solution is configured through the salt dissolving tank 3 to shorten the processing time of the system, and the filter residue in the salt solution can be pre-filtered; the added ratio can be adjusted through the salt solution delivery pump 12 and the dilution water delivery pump 13 to effectively prepare the dilute solution. The utility model first pre-treats the tap water through the water softener 1 to remove a large amount of calcium and magnesium ions; then, the first strong magnetic descaling device 6 and several second strong magnetic descaling devices 7 are used for strong magnetic magnetization, and the particle size of the particles in the water changes, making it difficult to adhere to the cathode. Thereby, the possibility of electrode scaling is reduced. The water in the pre-treated water storage tank 2 is further high-pressure-washed to the electrolytic cell 9 through the booster pump 14, and in particular, the electrodes can be specifically washed through the washing nozzle, so as to realize the acid-free washing of the electrolytic sodium hypochlorite generation system.

[0030] In the strong magnetic mechanism, the capacity of the magnetization treatment can be increased by the first strong magnetic descaling device 6 and the two second strong magnetic descaling devices 7 arranged in parallel; the magnetization treatment effect can also be enhanced and the efficiency of the magnetization treatment can be ensured by the interconnected first strong magnetic descaling device 6 and the second strong magnetic descaling device 7 or the interconnected second strong magnetic descaling devices 7, which has good practicality.

[0031] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. An acid-wash-free electrolytic sodium hypochlorite generation system, characterized in that: The invention comprises a water softener (1), a water storage tank (2), a salt water tank (5), a strong magnetic mechanism, a flow guide (8), an electrolytic cell (9) and a liquid storage tank (10) which are arranged in sequence from front to back. The water inlet of the water softener (1) is connected to tap water. A flow rate regulating pump is installed between the strong magnetic mechanism and the flow guide (8). An electromagnetic flow meter is arranged at the liquid outlet of the flow rate regulating pump. The strong magnetic mechanism comprises a first strong magnetic descaling device (6) and a plurality of second strong magnetic descaling devices (7) which are arranged in parallel. The first strong magnetic descaling device (6) and the second strong magnetic descaling devices (7) are connected to each other. The liquid outlet end of the adjacent second strong magnetic descaling device (7) is connected to the liquid inlet end, and a solenoid valve is provided on the connected pipeline; the liquid outlet end of the dilute brine tank (5) is connected to the liquid inlet ends of the first strong magnetic descaling device (6) and the second strong magnetic descaling device (7) respectively through solenoid valves, and the liquid outlet end of the guide device (8) is provided with a solenoid valve; the liquid inlet end and the liquid outlet end of the electrolytic cell (9) are respectively provided with flushing branches, and the flushing branches are provided with flushing solenoid valves; the water storage tank (2) is connected to the flushing branch at the liquid inlet end of the electrolytic cell (9) through a booster pump (14).

2. The acid-wash-free electrolytic sodium hypochlorite generation system according to claim 1, characterized in that: The invention also comprises a salt dissolving tank (3) and a cooling water tank (4); the water outlet of the water storage tank (2) is respectively connected to the salt dissolving tank (3) and the cooling water tank (4); the salt dissolving tank (3) and the cooling water tank (4) are respectively connected to the dilute brine tank (5) via a salt solution delivery pump (12) and a dilution water delivery pump (13); a stirring mechanism and a salt dissolving air pump are respectively arranged inside the salt dissolving tank (3) and the dilute brine tank (5); a salinity meter is respectively arranged inside the salt dissolving tank (3) and the dilute brine tank (5); a temperature sensor is respectively arranged inside the cooling water tank (4) and the dilute brine tank (5); and an electromagnetic flow meter is respectively arranged at the water outlet of the salt solution delivery pump (12) and the dilution water delivery pump (13).

3. The acid-wash-free electrolytic sodium hypochlorite generation system according to claim 1 or 2, characterized in that: A plurality of flushing nozzles are arranged inside the electrolytic cell (9) near the electrodes, and a flushing branch pipe at the liquid inlet end of the electrolytic cell (9) is connected to the flushing nozzle.

4. The acid-wash-free electrolytic sodium hypochlorite generation system according to claim 1, characterized in that: The deflector (8) is provided with a spiral channel inside.

5. The acid-wash-free electrolytic sodium hypochlorite generation system according to claim 1, characterized in that: An arc-shaped channel is provided inside the flow guide (8), and the inner diameter gradually decreases near the electrolytic cell (9).

6. The acid-wash-free electrolytic sodium hypochlorite generation system according to claim 5, characterized in that: The connection end between the flow guide (8) and the electrolytic cell (9) is arranged close to the negative electrode.

7. The acid-wash-free electrolytic sodium hypochlorite generation system according to claim 1, characterized in that: The magnetic field strength of the first strong magnetic descaling device (6) and the second strong magnetic descaling device (7) is ≥ 3000 Gauss.

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