Sodium hypochlorite generator dilute brine preparation device

Abstract

The utility model relates to the technical field of dilute brine preparation, in particular to a dilute brine preparation device of a sodium hypochlorite generator. Comprising a water inlet pipe connected with a water softener, the other end of the water softener is connected with a jet device through a first feeding pipe, a spiral blanking machine is connected with the other inlet of the jet device through a second feeding pipe, and the outlet end of the jet device is communicated with a dilute brine tank through a discharging pipe; a spiral blanking machine is adopted for automatically metering and controlling the adding amount of solid salt, a jet device with softened water as a power water source is arranged, the principle that the jet device sprays at a high speed and forms negative pressure is utilized, the salt from the spiral blanking machine is sucked into the jet device, efficiently mixed and dissolved in the jet device and forcibly dissolved again in a secondary mixer, and then the salt is fed into the secondary mixer. And finally, accurate 3-5% dilute brine is obtained.

Description

Technical Field

[0001] This utility model relates to the field of dilute brine preparation technology, and in particular to a dilute brine preparation device for a sodium hypochlorite generator. Background Technology

[0002] A sodium hypochlorite generator is a device that produces sodium hypochlorite solution by electrolyzing dilute brine. The concentration of the brine used is generally 3-5%, and it is prepared by dissolving solid salt in water. Currently, the dilute brine preparation process for sodium hypochlorite generators in China generally involves first dissolving solid salt in water to obtain saturated brine, and then diluting the saturated brine a second time. During the preparation of saturated brine, solid salt is added to the dissolving tank through a salt feeder, and then softened water is introduced. After the softened water passes through a salt layer of a certain thickness, saturated brine is obtained. Then, a metering pump is used to dilute the saturated brine with softened water at a certain ratio to obtain a dilute brine with a concentration of 3-5%.

[0003] The defects and shortcomings of this preparation process are:

[0004] Because a certain salt layer thickness needs to be maintained inside the salt dissolving tank, the tank is relatively tall. When adding salt into the tank, a salt-adding machine must be used to reduce manual labor intensity, which increases investment costs and the equipment occupies a large area, making it unsuitable for some places where the space of the equipment room is limited.

[0005] During the salt dissolution process, the thickness of the salt layer will gradually decrease. If the salt is not added in time, the concentration of the brine will change, which will affect the concentration of the subsequent dilute brine and the electrolysis effect, and may even cause abnormal operation of the electrolytic cell and fluctuations in the concentration of electrolytic products.

[0006] Because a filtration system needs to be installed at the bottom of the salt dissolving tank, it needs to be cleaned or replaced after a period of use. This makes cleaning and replacement troublesome and time-consuming, affecting the normal operation of the chlorination system and even causing the water plant's water supply and drainage production to stop. Utility Model Content

[0007] In order to overcome the shortcomings of the prior art and achieve the above-mentioned functions, this utility model provides a dilute brine preparation device for a sodium hypochlorite generator.

[0008] This utility model is achieved through the following technical solution:

[0009] A sodium hypochlorite generator dilute brine preparation device includes an inlet pipe connected to a water softener, the other end of the water softener being connected to an ejector via a first feed pipe, a screw feeder being connected to another inlet of the ejector via a second feed pipe, and the outlet end of the ejector being connected to a dilute brine tank via a discharge pipe.

[0010] Furthermore, a regulating valve and an electromagnetic flow meter are installed sequentially on the first feed pipe in the direction of flow.

[0011] Furthermore, a conductivity meter is installed on the discharge pipe.

[0012] Furthermore, the dilute brine tank is equipped with a high-level switch and a low-level switch.

[0013] Furthermore, the spiral feeder is equipped with a salt bin.

[0014] Furthermore, a secondary mixer is also installed on the discharge pipe, and the conductivity meter is located at the outlet end of the secondary mixer.

[0015] Furthermore, the screw feeder is equipped with a material level measuring instrument, and the entire preparation system will automatically alarm and stop when the storage level is at the bottom.

[0016] Furthermore, all electrical components in this device are connected to a PLC controller and controlled by a preset program in the PLC controller.

[0017] The beneficial effects of this utility model are:

[0018] The system employs a screw feeder to automatically meter and control the addition of solid salt. An ejector powered by softened water is used, utilizing the high-speed jetting and negative pressure of the ejector to draw the salt from the screw feeder into the ejector for efficient mixing and dissolution. The salt is then forcibly dissolved again in a secondary mixer, ultimately yielding a precise 3-5% brine solution, which is stored in a brine storage tank for use in the electrolysis tank. This technology utilizes a PLC intelligent control system and a brine conductivity meter to automatically adjust the salt and softened water volumes based on set brine concentration parameters, ensuring stable brine concentration and guaranteeing optimal electrolysis results. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure and connection of this utility model.

[0020] In the picture:

[0021] 1. Water inlet pipe, 2. Water softener, 3. Regulating valve, 4. Electromagnetic flow meter, 5. First feed pipe, 6. Second feed pipe, 7. Screw feeder, 8. Salt tank, 9. Ejector, 10. Discharge pipe, 11. Conductivity meter, 12. Dilute brine tank, 1201. High level switch, 1202. Low level switch, 13. Secondary mixer. Detailed Implementation

[0022] The technical solutions of the present invention will now be clearly and completely described with reference to the accompanying drawings of the embodiments thereof. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The components of the embodiments of the present invention described and shown in the accompanying drawings herein can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] like Figure 1 As shown, this utility model includes an inlet pipe 1 connected to a water softener 2. The function of the water softener 2 is to remove hardness ions from tap water, turning tap water into softened water. The other end of the water softener 2 is connected to an ejector 9 through a first feed pipe 5. The screw feeder 7 is connected to another inlet of the ejector 9 through a second feed pipe 6. The outlet end of the ejector 9 is connected to a dilute brine tank 12 through a discharge pipe 10.

[0025] A regulating valve 3 and an electromagnetic flow meter 4 are installed sequentially on the first feed pipe 5 in the direction of flow. The regulating valve 3 can be an electric regulating valve that can be connected to a PLC to reduce manual intervention.

[0026] The discharge pipe 10 is equipped with a conductivity meter 11. By applying an electric field to the solution, the resistance or conductivity value when current passes through is measured, and the conductivity is indirectly calculated, thereby obtaining the concentration of the dilute brine.

[0027] The dilute brine tank 12 is equipped with a high level switch 1201 and a low level switch 1202 to provide early warning and monitor the dilute brine level.

[0028] The spiral feeder 7 is equipped with a salt bin 8.

[0029] A secondary mixer 13 is also installed on the discharge pipe 10. The conductivity meter 11 is located at the outlet end of the secondary mixer 13 and performs the final concentration measurement after secondary high-level dissolution.

[0030] The screw feeder 7 is equipped with a material level measuring instrument. When the storage level is at the bottom, the entire preparation system will automatically alarm and stop.

[0031] All electrical components in this device are connected to a PLC controller and controlled by a preset program in the PLC controller.

[0032] The working principle of this utility model is as follows:

[0033] The addition of solid salt is automatically metered and controlled by a screw feeder 7 in the salt tank 8. An ejector 9, powered by softened water, draws the salt from the screw feeder 7 into the ejector through high-speed jetting and negative pressure. The salt is then efficiently mixed and dissolved within the ejector 9, and further forced to dissolve in a secondary mixer 13, ultimately yielding a dilute brine with a concentration accurate to 3-5%. This brine is stored in a dilute brine storage tank 12 for use in the electrolysis tank. A PLC controller and a dilute brine conductivity meter 11 automatically adjust the salt and softened water volumes according to the set dilute brine concentration parameters, ensuring a stable brine concentration and guaranteeing effective electrolysis.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A device for preparing dilute brine for sodium hypochlorite generator, comprising a water inlet pipe (1) connected with a water softener (2), characterized in that: The other end of the water softener (2) is connected to the jet generator (9) through the first feed pipe (5), the screw feeder (7) is connected to the other inlet of the jet generator (9) through the second feed pipe (6), and the outlet end of the jet generator (9) is connected to the dilute brine tank (12) through the discharge pipe (10).

2. The sodium hypochlorite generator dilute brine formulation device of claim 1, wherein: A regulating valve (3) and an electromagnetic flow meter (4) are installed sequentially on the first feed pipe (5) in the direction of flow.

3. The sodium hypochlorite generator dilute brine formulation device of claim 1, wherein: A conductivity meter (11) is installed on the discharge pipe (10).

4. The sodium hypochlorite generator dilute brine formulation device of claim 1, wherein: The dilute brine tank (12) is equipped with a high level switch (1201) and a low level switch (1202).

5. The dilute brine preparation device for a sodium hypochlorite generator according to claim 1, characterized in that: The screw feeder (7) is equipped with a salt bin (8).

6. The sodium hypochlorite generator dilute brine formulation device of claim 3, wherein: A secondary mixer (13) is also installed on the discharge pipe (10), and the conductivity meter (11) is located at the outlet end of the secondary mixer (13).

7. The sodium hypochlorite generator dilute brine formulation device of claim 1, wherein: The screw feeder (7) is equipped with a material level measuring instrument. When the storage volume is at the bottom level, the entire preparation system will automatically alarm and stop.

8. The sodium hypochlorite generator dilute brine formulation device of claim 1, wherein: All electrical components in this device are connected to a PLC controller and controlled by a preset program in the PLC controller.

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