CN206127436U - Hypochlorite generator is used in disinfection - Google Patents

Abstract

The utility model discloses a sodium hypochlorite generator for disinfection, which comprises an infusion pipeline, a salt dissolving tank, a sodium hypochlorite electrolytic tank and a finished product storage tank. A mixing tube is arranged between them, and one end of the mixing tube is connected to the sodium hypochlorite electrolytic cell through an infusion pipeline; the sodium hypochlorite electrolytic cell is provided with a temperature switch and an electrolytic cell liquid level switch, and an acid inlet is provided on the side of the electrolytic cell liquid level switch The acid addition port is connected to the finished product storage tank through the infusion pipeline, and a hydrogen discharge pipe is arranged on the upper surface of the finished product storage tank; a finished product dosing metering pump is installed on the side of the finished product storage tank, and the finished product storage tank and the finished product dosing metering The pumps are connected by infusion pipelines. The sodium hypochlorite generator for disinfection adopts split electrolysis, which can reduce salt consumption and power consumption, by-product chlorate and bromide, and can greatly reduce the outlet water temperature, improve electrolysis efficiency, and prolong electrode life.

Description

Sodium hypochlorite generator for disinfection

technical field

The utility model relates to the technical field of disinfection liquid generators, in particular to a sodium hypochlorite generator for disinfection.

Background technique

Although there are many ways to disinfect drinking water, the most commonly used method is to add oxidants for disinfection, that is, chemical methods. Among the oxidants, although chlorine gas is the most economical, due to the unsafe transportation and storage of chlorine gas; and the low solubility of the gas and water when it is added, the pressure of the chlorine gas cylinder changes constantly, and there is a problem that the dosage is not accurate enough. In addition, the extremely strong diffusion of gases such as chlorine has a toxic effect on the environment, and the high activity of free chlorine is easy to form a class of carcinogenic chlorinated organic compounds such as chloroform, carbon tetrachloride, and dioxin with many organic substances. The second pollution that causes the environment is gradually eliminated.

Thereby the sodium hypochlorite generator that utilizes the principle of chemical electrolysis to manufacture sodium hypochlorite disinfectant at the disinfection site has also been more and more widely used. Since the sodium hypochlorite generator was introduced from abroad at the end of the last century, it has been rapidly used in drinking water disinfection, hospital wastewater treatment, food utensil disinfection, wastewater decolorization, industrial domestic wastewater sterilization, farm disinfection and other industries. It can improve the ecological environment of water areas and protect the environment. environmental effects. At present, sodium hypochlorite generators are widely used to produce sodium hypochlorite disinfectant by electrolysis of salt water, and similar products have been continuously developed and improved. The main problem faced by the electrochemical industry today is to reduce power consumption. The sodium hypochlorite generator must also control the salt consumption and improve the current efficiency, so the finished equipment of the sodium hypochlorite generator is relatively large in size and relatively high in cost. The present invention is dedicated to improving the generation of sodium hypochlorite. In order to solve the cost problem of the device, a kind of disinfectant product equipment with small size, convenient operation, low cost and low energy consumption is produced.

Utility model content

The purpose of this utility model is to provide a kind of sodium hypochlorite generator for disinfection, to solve the problem proposed in the above-mentioned background technology.

In order to achieve the above object, the utility model provides the following technical solutions: a sodium hypochlorite generator for disinfection, including an infusion pipeline, a salt-dissolving tank, a sodium hypochlorite electrolytic cell and a finished product storage tank. An electric valve is installed between the meter and the infusion pipeline; the electric valve is electrically connected to a motor, and a salt-dissolving tank is arranged on the side of the motor, and the lower end of the salt-dissolving tank is connected to a brine metering pump through the infusion pipeline; the brine metering pump A mixing tube is arranged between the motor and the motor, and one end of the mixing tube is connected to the sodium hypochlorite electrolytic cell through the infusion pipeline; the sodium hypochlorite electrolytic cell is provided with a temperature switch and an electrolytic cell liquid level switch, and an additional switch is provided on the side of the electrolytic cell liquid level switch Acid port; the acid adding port is connected to the finished product storage tank through the infusion pipeline, the upper surface of the finished product storage tank is provided with a hydrogen discharge pipe, and the side of the finished product storage tank is respectively equipped with a high liquid level switch, a medium liquid level switch and a low liquid level switch A finished product dosing metering pump is installed on the side of the finished product storage tank, and the finished product storage tank and the finished product dosing metering pump are connected through an infusion pipeline.

As a further solution of the utility model: the infusion pipeline is provided with a sampling bottle and a pipeline connection terminal.

As a further solution of the utility model: the infusion pipeline is made of PVC engineering plastics.

As a further solution of the utility model: the flow rate of the float flowmeter and the flow rate of the brine metering pump are accurately calibrated before the initial debugging of the equipment.

As a further solution of the utility model: the salt-dissolving tank, the sodium hypochlorite electrolytic cell and the finished product storage tank are all provided with blowdown valves.

As a further solution of the utility model: a liquid level switch is arranged on the salt-dissolving tank.

Compared with the prior art, the utility model has beneficial effects:

1. The sodium hypochlorite electrolytic cell of the sodium hypochlorite generator for disinfection of the utility model adopts a modular design. According to the different amount of sodium hypochlorite required, the provided equipment can increase or decrease modules, which not only meets the needs of users, but also ensures the maturity of the production process of the stereotyped modules And perfection, to ensure product quality.

2. The sodium hypochlorite generator for disinfection of this utility model adopts a unique composite electrode connection method, with very few connecting parts in the whole structure, which reduces the contact resistance to the minimum, reduces the heat production on the connecting parts, and the electrolysis voltage is 10% lower than the conventional one. -15%, economical and energy-saving, high efficiency, and has a positive effect on reducing by-products. At the same time, shunt electrolysis can reduce salt consumption and electricity consumption by about 20%, reduce by-products - chlorate and bromide by about 50%, and can greatly reduce the outlet water temperature, improve electrolysis efficiency, and prolong electrode life. The whole generator adopts unit design, including salt dissolving system, brine water distribution system, electrolytic tube system, hydrogen exhaust system and pickling system, etc., with compact structure and small footprint. In addition, the sodium hypochlorite generator for disinfection uses the instant hydrogen exhaust technology in the tube to quickly discharge the hydrogen generated by electrolysis out of the electrolytic tube. Ensure the good state of the electrolyte in the electrolytic tube and prevent the electrodes from being exposed, so that not only the current efficiency of sodium hypochlorite production can be improved, but also the service life of the electrodes can be improved. There is a special channel for hydrogen discharge during the electrolysis process to reduce the hindrance of hydrogen to the current.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the utility model.

In the figure: 1-transfusion pipeline; 11-pipeline connection terminal; 12-electric valve; 2-rotameter; 3-motor; 4-sampling bottle; 5-salt solution tank; 6-salt water metering pump; 7-mixing tube ;8-Sodium hypochlorite electrolytic cell; 81-Temperature switch; 82-Electrolyzer liquid level switch; 83-Acid feed port, 9-Product storage tank; 91-Hydrogen exhaust pipe; 92-High liquid level switch; 93-Medium liquid level Switch; 94-low liquid level switch; 95-finished product dosing metering pump.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Fig. 1, in the utility model embodiment, a kind of sodium hypochlorite generator for disinfection comprises infusion pipeline 1, dissolving salt tank 5, sodium hypochlorite electrolytic cell 8 and finished product storage tank 9, and infusion pipeline 1 adopts PVC engineering plastics to make, It has the advantages of good sealing and corrosion resistance; a rotameter 2 is installed on the infusion pipeline 1, and the rotameter 2 is used to control the flow of tap water, thereby controlling the concentration of brine; it is installed between the rotameter 2 and the infusion pipeline 1 There is an electric valve 12, and the electric valve 12 controls the flow of tap water and salt water in the whole device; the electric valve 12 is electrically connected to the motor 3, and the side of the motor 3 is provided with a salt-dissolving tank 5, which is used for manufacturing and storing Saturated salt water, a liquid level switch is installed on the salt-dissolving tank 5, when the low liquid level in the salt-dissolving tank 5, open the electric valve 12 to replenish water, close the electric valve 12 when the liquid level reaches the requirement; the lower end of the salt-dissolving tank 5 The brine metering pump 6 is connected through the infusion pipeline 1, and the brine metering pump 6 is used to output the saturated salt water in the salt dissolving tank 5; a mixing tube 7 is arranged between the brine metering pump 5 and the motor 3, and one end of the mixing tube 7 passes through the infusion The pipeline 1 is connected to the sodium hypochlorite electrolytic cell 8; the brine metering pump 6 quantitatively outputs saturated brine to the mixing tube 7 to fully mix with the tap water controlled by the rotameter 2, which can ensure that the brine entering the sodium hypochlorite electrolytic cell 8 is 3-3.5% concentration of dilute brine, the dilute brine reacts chemically under the electrolysis of the sodium hypochlorite electrolytic cell 8, thereby generating sodium hypochlorite solution; The temperature of the chemical reaction in the medium can make the chemical reaction more thorough, and at the same time, the waste caused by too much or too little dilute brine can be prevented through the electrolytic tank liquid level switch 82; the side of the electrolytic tank liquid level switch 82 has an acid inlet 83. After the sodium hypochlorite generator has been working for a period of time, it is necessary to add a hydrochloric acid solution of 5% mass concentration) to the sodium hypochlorite electrolytic cell 8 through the acid inlet 83, and pickle the sodium hypochlorite electrolytic cell 8 through the hydrochloric acid solution, which can clean the electrolytic cell Clean up the oxides in the sodium hypochlorite solution to avoid being mixed with sundries; the acid addition port 83 is connected with the finished product storage tank 9 through the infusion pipeline 1, and the finished product storage tank 9 is provided with a hydrogen discharge pipe 91 on the upper surface of the finished product storage tank 9. The side of the finished product storage tank 9 is respectively equipped with a high liquid level switch 92, a middle liquid level switch 93 and a low liquid level switch 94; The metering pumps 95 are connected through the infusion pipeline 1; after the dilute brine is electrolyzed by the electrolyzer, the finished sodium hypochlorite solution with a concentration of 0.8% (7000ppm-9000ppm) enters the finished product storage tank 9, and a small amount of hydrogen generated by electrolysis is directly discharged from the hydrogen discharge pipe 91 The finished product storage tank 9 is equipped with high, medium and low three-level liquid level switches, and the liquid level switch 93 can start the finished product dosing metering pump 95 to quantitatively add the sodium hypochlorite solution to the disinfection point. The residual chlorine value of the factory water in sampling bottle 4 is adjusted Adjust the stroke size of the dosing metering pump, and the residual chlorine value of the factory water should be within the range specified by the national standard to ensure the water quality standard of the factory water.

To sum up: before the sodium hypochlorite generator for disinfection starts to work, it is necessary to check whether the opening and closing status of each valve is correct. Electrolyzer 8 drain valves are all closed, then adjust the concentration of saturated salt water in the salt-dissolving tank 5 by means of float flowmeter 2 and brine metering pump 6, then send the regulated dilute brine into sodium hypochlorite electrolyzer 8 for electrolytic reaction, through Split electrolysis can reduce salt consumption and electricity consumption by about 20%, reduce by-products - chlorate and bromide by about 50%, reduce environmental pollution, and finally discharge the finished sodium hypochlorite solution after electrolysis into the finished product storage tank In 9, a small amount of hydrogen produced by electrolysis is directly discharged to the outside from the hydrogen discharge pipe 91, which ensures the good state of the electrolyte in the sodium hypochlorite electrolytic cell 8 and prevents the electrodes from being exposed, thereby not only improving the current efficiency of sodium hypochlorite production, but also improving electrode life.

It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from all points of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to fall within the scope of the claims All changes within the meaning and range of equivalents of the required elements are included in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (6)

1. hypochlorite generator, including liquid-transport pipe-line are used in a kind of sterilization（1）, dissolved salt tank（5）, sodium hypochlorite electrolysis bath（8）With Product storage tank（9）, it is characterised in that：The liquid-transport pipe-line（1）On suspended body flowmeter is installed（2）, suspended body flowmeter（2）With Liquid-transport pipe-line（1）Between electrically operated valve is installed（12）；The electrically operated valve（12）It is electrically connected with motor（3）, motor（3）'s Side is provided with dissolved salt tank（5）, dissolved salt tank（5）Lower end pass through liquid-transport pipe-line（1）It is connected with saline dosing pump（6）；The salt Water dosing pump（6）With motor（3）Between be provided with mixing tube（7）, mixing tube（7）One end pass through liquid-transport pipe-line（1）With secondary chlorine Sour natrium electrolytic cell（8）Connection, sodium hypochlorite electrolysis bath（8）On be provided with temperature switch（81）With cell liquid bit switch（82）, Cell liquid bit switch（82）Side offer acid-adding port（83）；The acid-adding port（83）By liquid-transport pipe-line（1）With finished product Holding vessel（9）Connection, product storage tank（9）Upper surface is provided with hydrogen discharging pipe（91）, product storage tank（9）Side be respectively mounted There is high level switch（92）, middle liquid-level switch（93）With low liquid level switch（94）；The product storage tank（9）Side be provided with Finished product adds dosing pump（95）, product storage tank（9）Dosing pump is added with finished product（95）Between pass through liquid-transport pipe-line（1）Connection.

2. hypochlorite generator is used in a kind of sterilization according to claim 1, it is characterised in that：The liquid-transport pipe-line（1） On be provided with sampling bottle（4）With conduit connection end（11）.

3. hypochlorite generator is used in a kind of sterilization according to claim 1, it is characterised in that：The liquid-transport pipe-line（1） Made using PVC engineering plastics.

4. hypochlorite generator is used in a kind of sterilization according to claim 1, it is characterised in that：The suspended body flowmeter （2）Flow and saline dosing pump（6）Flow debug front accurate calibration for the first time in equipment.

5. hypochlorite generator is used in a kind of sterilization according to claim 1, it is characterised in that：The dissolved salt tank（5）, it is secondary Sodium chlorate electrolysis bath（8）And product storage tank（9）On be provided with blowoff valve.

6. hypochlorite generator is used in a kind of sterilization according to claim 1, it is characterised in that：The dissolved salt tank（5）On It is provided with liquid-level switch.