CN113699543A

CN113699543A - Sodium hypochlorite preparation system

Info

Publication number: CN113699543A
Application number: CN202111073422.8A
Authority: CN
Inventors: 刘文崇; 刘文凯; 郑振天; 李志杰
Original assignee: Fujian Hada Intelligence Technology Co ltd
Current assignee: Fujian Hada Intelligence Technology Co ltd
Priority date: 2021-09-14
Filing date: 2021-09-14
Publication date: 2021-11-26
Anticipated expiration: 2041-09-14
Also published as: CN113699543B

Abstract

The invention relates to a sodium hypochlorite preparation system which comprises an electrolytic cell, a gas-liquid separation device, a gas dilution device and a mixing device. The electrolytic cell comprises a cell body, wherein an anode chamber and a cathode chamber are arranged in the cell body, and a diaphragm is arranged between the anode chamber and the cathode chamber; the anode chamber is provided with an anode inlet and an anode outlet, and the cathode chamber is provided with a cathode inlet and a cathode outlet; the gas-liquid separation device is used for separating gas and liquid in the cathode discharge; the gas dilution device is used for diluting the concentration of the gas separated by the gas-liquid separation device; the mixing device is used for mixing gas discharged from the anode outlet of the electrolytic cell and liquid separated by the gas-liquid separation device. The invention not only makes full use of the electrolysis product, but also can prepare sodium hypochlorite solution without secondary electrolysis, thereby greatly reducing energy consumption, improving the concentration of sodium hypochlorite, absorbing chlorine gas and avoiding the chlorine gas leakage to pollute the environment and cause potential safety hazard.

Description

Sodium hypochlorite preparation system

Technical Field

The invention relates to the technical field of electrolysis, in particular to a sodium hypochlorite preparation system.

Background

Hypochlorous acid is a strong oxidant and can kill bacteria in water, so tap water is usually sterilized by chlorine (about 0.002g of chlorine is introduced into 1L of water). Hypochlorous acid, which is capable of discoloring dyes and organic colors, is commonly used as a bleaching agent, an oxidizing agent, a deodorizing agent, and a disinfectant. In biology, hypochlorous acid is used by neutrophils (neutrophiles) to kill bacteria and is widely used in chlorine-containing disinfectant products for swimming pools. The existing devices for preparing sodium hypochlorite are numerous, and a sodium chloride solution is electrolyzed by a diaphragm-free method to generate a sodium hypochlorite solution with the concentration of 0.7-1%. Electrolyzing the sodium chloride solution to obtain chlorine, and reacting the chlorine with water to prepare a sodium hypochlorite solution.

In the process of implementing the invention, the inventor finds that the following problems exist in the prior art:

the existing sodium hypochlorite electrolytic cell is limited by the influences of liquid temperature, production energy consumption and preparation process factors in the preparation process, the concentration of the prepared sodium hypochlorite solution is generally lower than 1 percent, the energy consumed in the electrolysis process is large, and the production cost is high.

Disclosure of Invention

Therefore, a device with low energy consumption and capable of preparing high-concentration sodium hypochlorite is needed to be provided for solving the problems of low concentration and high energy consumption of the prepared sodium hypochlorite in the prior art.

In order to achieve the above object, the present invention provides a sodium hypochlorite preparation system, comprising:

the electrolytic cell comprises a cell body, wherein an anode chamber and a cathode chamber are arranged in the cell body, and a diaphragm is arranged between the anode chamber and the cathode chamber; the anode chamber is provided with an anode inlet and an anode outlet, and the cathode chamber is provided with a cathode inlet and a cathode outlet;

the gas-liquid separation device is used for separating gas and liquid in the cathode discharge and is provided with a hydrogen outlet and a liquid outlet;

a gas dilution device for diluting the concentration of the gas separated by the gas-liquid separation device,

and the mixing device is used for mixing the gas discharged from the anode outlet of the electrolytic cell and the liquid separated by the gas-liquid separation device.

Preferably, the gas-liquid separation device comprises a liquid inlet pipe, a first gas-liquid separation pipe, an inclined tee joint and a second gas-liquid separation pipe,

the liquid inlet pipe is connected with a main pipeline of the inclined tee joint, and reducing pipes are arranged in the main pipeline;

the first gas-liquid separation pipe is vertically arranged, the lower end of the first gas-liquid separation pipe is connected with a first branch pipe of the inclined tee joint, and the upper end of the first gas-liquid separation pipe is used as a hydrogen outlet and is connected with a gas dilution device;

the second gas-liquid separation pipe is vertically arranged, the upper end of the second gas-liquid separation pipe is connected with a second branch pipe of the inclined tee joint, and the lower end of the second gas-liquid separation pipe is connected with the mixing device.

Preferably, the gas-liquid separation device is provided with a gas outlet, and the gas dilution device includes:

the sealed tank body is connected with a gas outlet of the gas-liquid separation device and is used for storing gas in the cathode discharge separated by the gas-liquid separation device;

the first pipeline is arranged outside the sealed tank body, one pipe end of the first pipeline is connected with an air outlet of the fan, and the other pipe end of the first pipeline freely extends to be communicated with the outside air;

one pipe end of the second pipeline is communicated with the sealed tank body, and the other pipe end of the second pipeline is communicated with the middle part of the first pipeline; a negative pressure area is formed at the connecting position of the second pipeline and the first pipeline;

one pipe end of the third pipeline is communicated with the sealed tank body, and the other pipe end of the third pipeline freely extends to be communicated with the outside air;

and the fan is used for blowing air to the first pipeline.

Preferably, the gas dilution device comprises:

one pipe end of the first pipeline is connected with an air outlet of the fan, and the other pipe end of the first pipeline freely extends to be communicated with the outside air;

one pipe end of the second pipeline is communicated with the hydrogen outlet of the gas-liquid separation device, and the other pipe end of the second pipeline is communicated with the middle part of the first pipeline; a negative pressure area is formed at the connecting position of the second pipeline and the first pipeline;

and the fan is used for blowing air to the first pipeline.

More preferably, a choke block is further arranged at a connecting position of the second pipeline and the first pipeline, and the choke block is arranged on the inner wall of the first pipeline and used for blocking blast air so that a negative pressure area is formed at the connecting position of the second pipeline and the first pipeline.

Preferably, an alkaline water pipeline is arranged at a cathode inlet of the electrolytic cell, and the alkaline water pipeline is connected with the cathode inlet through an alkaline pump.

Preferably, the system further comprises a brine proportioning system, wherein the brine proportioning system comprises:

the mixer is used for mixing the brine and the soft water and is provided with a second liquid outlet which is connected with an anode inlet of the electrolytic cell;

the soft water tank is connected with the mixer through a soft water pipeline, and a soft water pump is arranged on the soft water pipeline;

the brine tank is connected with the mixer through a brine pipeline, and a brine pump is arranged on the brine pipeline;

the first salinity meter is arranged in the saline pipe and used for detecting the concentration of the saline water in the saline pipe;

the salt adding mechanism comprises a bin and a discharge hole; the discharge port is arranged on the stock bin and is connected with the feed port of the brine tank through a feed valve;

a control unit configured to be in electrical connection with the first salinity meter, the feed valve.

More preferably, a bottom plate is arranged on a discharge port of the salt adding mechanism, the bottom plate is used for covering the discharge port, at least one discharge hole is arranged on the bottom plate, and an inserting plate is further arranged at the position of the discharge hole;

the salt adding mechanism further comprises a driving mechanism, and the driving mechanism is used for driving the inserting plate to move relative to the bottom plate so that the discharging hole is in a closed state or an open state.

More preferably, the sodium hypochlorite preparation system includes an automatic bag breaking device, the automatic bag breaking device includes:

the clamping mechanism is used for clamping the salt bag;

the bag breaking mechanism is arranged below the clamping mechanism and used for cutting the salt bag;

the lifting mechanism is in transmission connection with the clamping mechanism and is used for driving the clamping mechanism to lift so as to enable the clamping mechanism to be in contact with the bag breaking mechanism or to be far away from the bag breaking mechanism;

and the first driving mechanism is used for driving the lifting mechanism to lift.

Preferably, the bag breaking mechanism comprises:

a support assembly comprising a first angled portion and a second angled portion; one end part of the first inclined part is connected with the first fixing component, and the other end part of the first inclined part extends along the first inclined direction; one end part of the second inclined part is connected with the second fixing component, and the other end part of the second inclined part extends along the second inclined direction; the first inclination direction and the second inclination direction are both inclined inwards;

the bag breaking assembly comprises a first cutting assembly, the first cutting assembly comprises a first cutting part and a second cutting part, and the first cutting part is arranged along the first inclined direction; the second cutting part is arranged along the second inclined direction;

and the fixing assembly comprises a first fixing assembly, and the first fixing assembly is used for fixing two ends connected with the first inclined part and the second inclined part.

Different from the prior art, the technical scheme adopts the diaphragm type electrolytic cell to separate the products of the cathode and the anode, separates the hydrogen and the alkali liquor discharged from the cathode chamber by the gas separation device, and mixes and reacts the alkali liquor and the chlorine discharged from the anode chamber to prepare the sodium hypochlorite solution. Through above-mentioned technical scheme preparation sodium hypochlorite solution, not only make full use of the electrolysis product, can also prepare sodium hypochlorite solution, need not secondary electrolysis, the energy consumption that has significantly reduced has also improved sodium hypochlorite's concentration, can absorb chlorine moreover, avoids chlorine to leak the polluted environment, causes the potential safety hazard.

Drawings

FIG. 1 is a schematic diagram of a sodium hypochlorite preparation system according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a mixing device according to an embodiment of the present invention;

FIG. 3 is a schematic view showing the structure of a gas-liquid separator according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a gas dilution device according to an embodiment of the present invention;

FIG. 5 is a schematic view of a choke block structure according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a saline proportioning device according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of an automatic bag breaking apparatus according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a bag breaking mechanism according to an embodiment of the present invention.

Description of reference numerals:

1. an electrolytic cell; 10. an electrolysis power supply;

21. a liquid inlet pipe; 22. a first gas-liquid separation tube; 23. an inclined tee joint; 24. a second gas-liquid separation pipe; 25. reducing; 26. a hydrogen outlet; 27. a gas separation packing;

31. a first pipeline; 32. a second pipeline; 33. a third pipeline; 34. a fan; 35. sealing the tank body;

41. a mixer; 42. a soft water tank; 43. a soft water pipeline; 44. a soft water pump; 45. a brine tank; 46. a brine line; 47. a brine pump; 48. a first salinity meter; 49. a salt adding mechanism;

51. a mixing tube; 52. standing the tube; 53. blocking sheets; 54. a filler;

61. a clamping mechanism; 62. a bag breaking mechanism; 63. a lifting mechanism; 64. salt bags;

621. a support assembly; 622. a bag breaking assembly; 623. and (6) fixing the assembly.

Detailed Description

To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present application.

As shown in fig. 1, the present embodiment provides a sodium hypochlorite preparation system, including: an electrolytic bath, a gas-liquid separation device, a gas dilution device and a mixing device.

The electrolytic cell comprises a cell body, wherein an anode chamber and a cathode chamber are arranged in the cell body, and a diaphragm is arranged between the anode chamber and the cathode chamber. The anode chamber is provided with an anode inlet and an anode outlet, and the cathode chamber is provided with a cathode inlet and a cathode outlet. The anode plate and the cathode plate in the electrolytic cell 1 are respectively connected with an electrolytic power supply 10, and the electrolytic cell specifically comprises: the anode plate of the anode chamber of the electrolytic cell 1 is connected with the anode of the power supply, and the cathode plate of the cathode chamber of the electrolytic cell 1 is connected with the cathode of the power supply.

In the present embodiment, the electrolytic cell has a diaphragm type electrolytic cell structure, and the liquid is fed to the cathode and the anode separately. During electrolysis, soft water enters the cathode chamber from the cathode inlet, and brine enters the anode chamber from the anode inlet. After brine in the electrolytic cell is electrolyzed, a large amount of NaOH solution and hydrogen are generated in the cathode chamber, chlorine is generated in the anode chamber, and then the required sodium hypochlorite solution can be obtained by further processing the anode product and the cathode product. The electrolytic tank is preferably a diaphragm type electrolytic tank, which can ensure that the anode product and the cathode product can not influence each other and are respectively discharged from the anode outlet and the cathode outlet.

The gas-liquid separation device is used for separating gas and liquid in the cathode discharge. Because the products discharged from the cathode chamber are hydrogen and sodium hydroxide solution, but the sodium hydroxide solution is needed in the subsequent preparation of the sodium hypochlorite solution, the hydrogen and the sodium hydroxide solution are separated by adopting a gas-liquid separation device, and the subsequent reaction is prevented from being influenced due to the fact that the hydrogen is mixed into the collected sodium hydroxide solution.

And the gas diluting device is used for diluting the concentration of the gas separated by the gas-liquid separating device. The gas separated by the gas-liquid separation device is hydrogen, and if the hydrogen is directly discharged into the air, once the concentration of the hydrogen exceeds a certain range, the risk of explosion exists. Therefore, the separated hydrogen needs to be diluted and then discharged, and the hydrogen can be sucked out by suction or jet flow to be discharged to the outside.

And the mixing device is used for mixing the gas discharged from the anode outlet of the electrolytic cell 1 and the liquid separated by the gas-liquid separation device. The gas discharged from the anode outlet of the electrolytic cell 1 is chlorine gas, and the liquid separated by the gas-liquid separation device is sodium hydroxide solution. And mixing the chlorine gas and the sodium hydroxide solution to react to obtain a sodium hypochlorite solution. The mixing device may be a closed container with a stirring tool, and the mixing is performed sufficiently to mix the chlorine gas and the sodium hydroxide solution uniformly, but the invention is not limited thereto, and any device capable of mixing gas and liquid is within the protection scope of the embodiment.

Preferably, as shown in fig. 2, the mixing device includes a mixing tube 51, a rest tube 52, a blocking piece 53, and a mixing filler 54. The inlet end of the mixing tube 51 is connected with the anode outlet and the liquid outlet of the gas-liquid separation device, and the outlet end of the mixing tube is connected with the inlet end of the standing tube. Be provided with the closure plate 53 in the hybrid tube 51, chlorine and alkali lye are when passing through closure plate 53, and the aperture on the closure plate 53 is broken up accumulational chlorine bubble, increases the area of contact of chlorine and NaOH solution, improves absorption efficiency. After the large bubbles of chlorine gas are broken up into small bubbles by the blocking pieces, the bubbles are further broken up in the mixed filler 54 when passing through the mixed filler 54 in the mixing pipe 51, so that the chlorine gas absorption effect is better. After passing through the mixing pipe 51, the liquid and gas flowing into the stationary pipe 52 are smoothly stationary, and the flow rate is lowered. Preferably, a plurality of groups of mixing pipes and standing pipes are arranged, and mixing and standing are repeatedly performed, so that chlorine is scattered and absorbed for two times and three times, and the occurrence of the overflow of the chlorine is effectively avoided.

In some embodiments, the gas separation filler and the mixed filler can be made of the same material, the functions of the gas separation filler and the mixed filler are different, the gas separation filler is used for separating small bubbles in liquid, and the separation effect is achieved by adopting different flow rates of the gas and the liquid. The mixed filler has the function of increasing the contact time of the gas and the liquid after the gas passes through the seasoning, thereby increasing the reaction effect.

In the using process, sodium chloride solution is introduced into an anode inlet of the electrolytic cell, and pure water is introduced into a cathode inlet of the electrolytic cell. A diaphragm in the electrolytic cell separates the anode chamber from the cathode chamber, the cathode generates hydrogen and sodium hydroxide solution and discharges the hydrogen and sodium hydroxide solution from the cathode outlet, and the anode generates chlorine and sodium hypochlorite solution and discharges the chlorine and sodium hypochlorite solution from the anode outlet. The gas-liquid separation device is connected with the cathode outlet to separate hydrogen and sodium hydroxide solution, and the hydrogen is discharged through the gas dilution device. And fully mixing the sodium hydroxide solution with the chlorine discharged from the anode outlet through a mixing device to obtain a sodium hypochlorite solution. By the method, the sodium hypochlorite solution can be obtained without electrolysis again, and the concentration of the sodium hypochlorite solution can be improved.

In a preferred embodiment, referring to fig. 3, the gas-liquid separation device comprises a liquid inlet pipe 21, a first gas-liquid separation pipe 22, a tee 23 and a second gas-liquid separation pipe 24.

One end of the liquid inlet pipe 21 is connected with the cathode outlet of the electrolytic cell, and the other end is connected with the main pipeline of the inclined tee 23. Because the first gas-liquid separation pipe 22 needs to be larger than the caliber of the liquid inlet pipe by more than 3 grades, the reducing pipe 25 is arranged in the main pipeline of the liquid inlet pipe. The liquid inlet pipe passes through the inclined tee joint by about 30-40 cm through reducing, and hydrogen is ensured not to flow away upwards through an outlet of the inclined tee joint after flowing out of the liquid inlet pipeline.

The first gas-liquid separation pipe 22 is vertically arranged, and gas-liquid separation occurs at the position, and is mainly manufactured by standard pipeline processing. The lower end of the first gas-liquid separation pipe 22 is connected with the first branch pipe of the inclined tee 23, and the upper end of the first gas-liquid separation pipe 22 is used as a hydrogen outlet 26 and is connected with a gas dilution device. Due to the low density of hydrogen, the hydrogen produced by the electrolyzer will move upwards in the first gas-liquid separation tube 22.

The second gas-liquid separation pipe 24 is vertically arranged, the upper end of the second gas-liquid separation pipe 24 is connected with the second branch pipe of the inclined tee 23, and the lower end of the second gas-liquid separation pipe 24 is connected with the mixing device.

The inclined tee joint is mainly based on standard pipe fittings, and corresponding standards and specifications can be selected according to needs. Preferably, the inclined tee joint is a 45-degree inclined tee joint, so that liquid can conveniently flow downwards into the second gas-liquid separation pipe.

In the using process, the mixed solution of hydrogen and sodium hydroxide enters the liquid inlet pipe 21, is amplified through the reducing pipe 25, and then enters the first gas-liquid separation pipe 22 through the inclined tee 23 to perform gas-liquid primary separation. Since the hydrogen gas has a density lower than that of the liquid, the hydrogen gas escapes upward and enters the gas diluting device through the hydrogen gas outlet 26 at the upper end of the first gas-liquid separation pipe 22. And the residual liquid flows into a second gas-liquid separation pipe 24 through an inclined tee 23 to carry out gas-liquid two-stage separation. At this time, a small amount of hydrogen bubbles remain in the liquid, and the hydrogen bubbles move upward while the liquid flows downward and flows into the mixing device from the lower outlet of the second gas-liquid separation pipe 24.

In the mixed liquid of hydrogen and sodium hydroxide, part of small bubbles move along the flow velocity direction. Preferably, the first gas-liquid separation pipe 22 and the second gas-liquid separation pipe 24 are internally provided with a gas separation packing 27. The gas separation filler can further separate the hydrogen gas small bubbles flowing along with the liquid from the liquid, and the gas-liquid separation effect is improved. The gas and the liquid pass through the gas separation packing 27 in the first gas-liquid separation tube 22, a part of the gas is adsorbed, and the remaining liquid flows through the inclined tee 23 to the gas separation packing 27 in the second gas-liquid separation tube 24. When liquid passes through the gas separation filler, small bubbles remained in the liquid are blocked and adsorbed by the gas separation filler. After a plurality of small bubbles form large bubbles, the buoyancy of the bubbles is increased, the floating speed is accelerated, so that secondary separation of hydrogen and alkali is formed, the hydrogen content in the alkali liquor is reduced, and the subsequent reaction efficiency of chlorine and alkali is improved.

In other embodiments, the gas-liquid separation device may also be a filter membrane that allows gas to pass through but does not allow liquid to pass through, but is not limited thereto, and any device that can separate hydrogen gas and sodium hydroxide solution is within the protection scope of the present embodiment.

In a preferred embodiment, referring to fig. 4, the gas dilution device comprises: a first pipeline 31, a second pipeline 32, a third pipeline 33, a fan 34 and a sealed tank 35. The hydrogen concentration generated by the hypochlorous acid electrolysis system is higher, and the hydrogen cannot be directly discharged, so that potential safety hazards can be brought. The gas diluting device is used for diluting hydrogen, and the hydrogen concentration is reduced to a certain range and then discharged, so that dangerous situations such as explosion can be avoided.

And the sealed tank body 35 is used for storing the hydrogen separated by the gas separation device and is connected with the hydrogen outlet 26 of the first gas-liquid separation pipe 22.

And the first pipeline 31 is arranged outside the sealed tank body 35, one pipe end of the first pipeline 31 is connected with an air outlet of the fan 34, and the other pipe end of the first pipeline extends freely to be communicated with the outside air. Under the action of the fan, the gas in the first pipeline flows in one direction, flows to the end, far away from the fan, of the first pipeline and flows into the external environment.

And a second pipeline 32, wherein one pipe end of the second pipeline 32 is communicated with the sealed tank body 35, and the other pipe end is communicated with the middle part of the first pipeline 31. The structure of the joint of the second pipeline and the first pipeline is similar to a T shape, and a negative pressure area is formed at the joint. And a third pipeline 33, one end of which is communicated with the sealed tank body 35, and the other end of which freely extends to be communicated with the outside air. And a blower 34 for blowing air into the first pipe 31. The air outlet of the fan is connected with one end of the first pipeline. The blower may be a blower, or a ventilator.

There is the negative pressure region in the hookup location of first pipeline 31 and second pipeline 32, and the gas in the sealed tank body 35 is "inhaled" by the negative pressure region through second pipeline 32, and second pipeline one end is connected with the sealed tank body, and the internal hydrogen of sealed tank passes through the regional first pipeline of flow direction of negative pressure after, can contact and move together with the air current in the first pipeline to flow toward external environment, thereby reach the effect of diluting the internal gas of sealed tank.

The sealed tank body is provided with a third pipeline for keeping the pressure in the sealed tank body balanced, one pipe end of the third pipeline is communicated with the sealed tank body 35, and the other pipe end of the third pipeline freely extends to be communicated with the outside air. When the internal pressure that flows because of the gas outflow of seal tank reduced, external air is inhaled the seal tank internally by the third pipeline, can further dilute the gas concentration in the sealed storage tank through injecting into external air on the one hand, and on the other hand can be so that the internal pressure of seal tank reaches dynamic balance.

When the fan is closed, although the first pipeline, the second pipeline and the third pipeline are not involved in gas flowing, the sealing gas is communicated with the outside air through the second pipeline and the first pipeline in sequence and is communicated with the outside air through the third pipeline, and the pressure in the sealing storage tank is balanced with the outside air all the time. No matter the fan is opened or closed, in the whole device use process, the pressure in the sealed tank body can not suddenly rise or fall, and the sealed tank body can not suddenly shrink or expand, so that the service life of the sealed tank body can be effectively prolonged.

In a preferred embodiment, the gas dilution means comprises: a first conduit 31, a second conduit 32 and a fan 34.

One end of the first pipeline 31 is connected with an air outlet of the fan 34, and the other end extends freely to be communicated with the outside air. One end of the second pipe 32 communicates with the hydrogen outlet 26 of the first gas-liquid separating pipe 22, and the other end communicates with the middle of the first pipe 31. The connecting position of the second pipeline and the first pipeline forms a negative pressure area. The blower 34 is used to blow air into the first pipe 31.

There is the negative pressure region in the hookup location of first pipeline 31 and second pipeline 32, and the gas of hydrogen export 26 is "inhaled" by the negative pressure region through second pipeline 32, and second pipeline one end is connected with hydrogen export 26, and hydrogen passes through the regional first pipeline of flow direction of negative pressure after, can contact and move together with the air current in the first pipeline to flow toward external environment, thereby reach the effect of diluting hydrogen fast. The sealed tank body of gas storage is not set up in this embodiment, therefore need not to set up the third pipeline and maintain atmospheric pressure stable, and the structure is simpler.

In a more preferred embodiment, referring to fig. 5, a choke block 36 is further disposed at a connection position of the second pipeline 32 and the first pipeline 31, and the choke block is disposed on an inner wall of the first pipeline 31 and is used for blocking the blowing air, so that a negative pressure region is formed at the connection position of the second pipeline 32 and the first pipeline 31. The first pipeline is under the fan effect, and inside air current is towards the one end removal of keeping away from the fan. The wind resistance block is arranged on the inner wall of the first pipeline, and one side of the wind resistance block faces the wind and the other side of the wind resistance block faces the leeward. According to bernoulli's principle, when the flow rate of the fluid (gas and liquid) is very fast, the pressure becomes very small; conversely, when the flow rate is slow, the pressure is high. The flow velocity of the air on the windward side is high, and the flow velocity of the air on the leeward side is low. When the airflow blows over the wind-resistant block, the air flow speed of the leeward side of the wind-resistant block is very slow, and a negative pressure area is generated, so that the adsorption effect is generated and the air flow is guided. In other embodiments, the choke block is arranged below the inner wall of the first pipeline and integrally formed with the inner wall of the first pipeline, so that the problem that when the wind power of the fan is increased, the choke block is blown to be displaced, the formed negative pressure area is reduced or even cannot be formed, and the effect is greatly reduced.

In other embodiments, the gas dilution device may be a jet device, but is not limited thereto, and any device capable of diluting the hydrogen gas and discharging the diluted hydrogen gas to the outside is within the protection scope of the present embodiment.

In a preferred embodiment, the cathode inlet of the electrolytic cell 1 is provided with an alkaline water pipeline, and the alkaline water pipeline is connected with the cathode inlet through an alkaline pump 15. The pH value of the liquid entering the cathode inlet can be improved by adding the alkali pump at the cathode inlet, so that the pH value in the cathode chamber is improved, the excessive alkali liquor in the cathode chamber of the electrolytic cell is ensured, and the equipment can stably run. In addition, the addition of alkali liquor in the cathode chamber can also improve the electric conduction efficiency of the electrolytic cell. The conductivity of common household tap water is about 125-1250 mu s/cm, and after an alkaline water pipeline and an alkaline pump are arranged, alkaline liquid is added into water entering a cathode inlet, so that the conductivity in a cathode chamber can be improved, and the conductive effect of the electrolytic cell is improved. In this embodiment, the alkaline water pipeline is filled with 15% NaOH solution, and the parameters of the alkaline pump are adjusted to make water and alkaline solution enter the cathode inlet according to the ratio of 40: 1. In addition, the second gas-liquid separation pipe 24 and the alkaline water pipe form a U-shaped pipe, which can prevent the liquid discharged from the anode from flowing into the cathode electrolytic cell.

In a preferred embodiment, referring to fig. 6, the brine proportioning system comprises: a mixer 41, a soft water tank 42, a brine tank 45, a first salinity meter 48, a salting mechanism 49, and a control unit.

A mixer 41 for mixing the brine and the soft water. The mixer 41 is provided with a second liquid outlet which is connected with the anode inlet of the electrolytic cell, and the brine prepared by the mixer is introduced into the anode inlet of the electrolytic cell.

The soft water tank 42 is connected to the mixer 41 through a soft water line 43, and a soft water pump 44 is provided on the soft water line 43. The soft water tank is used for storing soft water, and the soft water pump is used for conveying the soft water. Water pumps are machines that deliver or pressurize a liquid. It transfers the mechanical energy of the prime mover or other external energy to the liquid, causing the liquid energy to increase. The soft water pump pumps the soft water in the soft water pipeline into the mixer.

The brine tank 45 is connected to the mixer 41 through a brine line 46, and a brine pump 47 is provided in the brine line 46. The brine tank is used for storing brine, and specifically, the brine that the brine tank stored is saturated brine, and the brine pump is thrown the brine in the brine pipeline into the blender.

The first salinity meter 48 is disposed in the brine pipe 46, and the first salinity meter 48 is configured to detect a concentration of brine in the brine pipe 46. The brine tank is used for storing brine, and specifically, the brine that the brine tank stored is saturated brine, and the brine pump is thrown the brine in the brine pipeline into the blender.

A salt adding mechanism 49 which comprises a storage bin and a discharge hole; the discharge port is arranged on the stock bin and is connected with the feed inlet of the brine tank 45 through a feed valve. The salt adding mechanism is used for supplementing salt in the brine tank. The discharge gate of salt mechanism can be connected through the feed inlet of feedstock channel with the brine tank, and the feed valve can be established in the feedstock channel, and when the feed valve was opened, salt material in the feed bin of salt mechanism can enter into the brine tank through feedstock channel to the effect of salt is supplemented for the brine tank is automatic to the realization. In other embodiments, the material port is arranged above the material inlet of the brine tank, a bottom plate is arranged between the material outlet and the material inlet, a material outlet and an insert plate are arranged on the bottom plate, and the material inlet valve can realize the effect of the material inlet valve through the movement of the insert plate, namely when the insert plate moves to the position which does not completely cover the material outlet, the material inlet valve is opened, salt in the storage bin can enter the brine tank through the material outlet on the bottom plate, so as to realize the function of automatically supplementing salt to the brine tank; when the flashboard moves to the position completely covering the discharge hole, the feed valve is closed, the salt in the storage bin does not enter the salt tank, and the charging structure stops adding salt for the salt tank.

The salt adding mechanism 49 includes a bin and a discharge port. The discharge port is arranged on the stock bin and is connected with the feed inlet of the brine tank through a feed valve. The salt adding mechanism is used for supplementing salt in the brine tank. The discharge gate of salt mechanism can be connected through the feed inlet of feedstock channel with the brine tank, and the feed valve can be established in the feedstock channel, and when the feed valve was opened, salt material of the feed bin of salt mechanism can enter into the brine tank through feedstock channel to the realization is the effect of brine tank automatic salt that supplys. In other embodiments, the material port is arranged above the material inlet of the brine tank, a bottom plate is arranged between the material outlet and the material inlet, a material outlet and an insert plate are arranged on the bottom plate, and the material inlet valve can realize the effect of the material inlet valve through the movement of the insert plate, namely when the insert plate moves to the position which does not completely cover the material outlet, the material inlet valve is opened, salt in the storage bin can enter the brine tank through the material outlet on the bottom plate, so as to realize the function of automatically supplementing salt to the brine tank; when the flashboard moves to the position completely covering the discharge hole, the feed valve is closed, the salt in the storage bin does not enter the salt tank, and the charging structure stops adding salt for the salt tank.

In other embodiments, the salting mechanism and the brine tank are connected by a lifting mechanism. The lifting mechanism is a mechanical device for transportation by changing potential energy, and can be a crane, a bucket elevator and the like. When the height that the feed inlet of salt solution jar was located is higher than the height that the discharge gate of salt adding mechanism was located, hoist mechanism can promote the salt material to the eminence from lower, can also control hoist mechanism's lifting speed, is convenient for add salt in the salt solution jar.

The control unit is configured to be in electrical communication with the first salinity meter 48, the feed valve. When the control unit judges that first salinity meter detects salinity and is less than the predetermined value, the feed valve of control structure that adds salt is opened for add salt mechanism and supply the salt material for the brine tank, realize the effect of salt when salt concentration crosses low automatically, thereby promote the salt concentration that the brine tank came out, and then make the dilute brine that obtains after the soft water ratio that the brine tank came out and the soft water tank came out through the brine tank reach required concentration requirement, optimized production efficiency.

During use, the soft water in the soft water tank 42 flows into the mixer 41 through the soft water line 43 by the soft water pump 44, and the saturated brine in the brine tank 45 flows into the mixer 41 through the brine line 46 by the brine pump 47. The brine and the soft water in the mixer are mixed according to the proportion to obtain dilute brine, and the proportion of the brine and the soft water can be controlled by controlling the water outlet proportion of the brine pump and the soft water pump, so that the required dilute brine is prepared. When the first salinity meter 48 detects that the salinity in the brine pipeline 46 is lower than the preset value, it indicates that the concentration of the brine discharged from the brine tank 45 is lower at this time, and the discharged brine is actually in an unsaturated state, the control unit controls the opening of the feed valve of the salting mechanism, so that the brine in the storage bin of the salting mechanism enters the brine tank through the feed valve, and the concentration of the brine discharged from the brine tank is increased. When the first salinity meter detects that the salinity in the brine pipeline reaches the saturation requirement, the control unit can control the feeding valve of the salting mechanism to be closed, and therefore the salting mechanism is stopped from continuing to feed materials into the brine tank. Through this scheme, can guarantee that the brine concentration that the brine tank came out is saturated brine all the time, and then the accuracy of raw materials concentration when guaranteeing the dilute brine ratio.

In a preferred embodiment, a bottom plate is disposed on the discharge port of the salting mechanism 49, the bottom plate is used for covering the discharge port, at least one discharge hole is disposed on the bottom plate, and an insert plate is disposed at the position of the discharge hole. The salt adding mechanism further comprises a driving mechanism, and the driving mechanism is used for driving the inserting plate to move relative to the bottom plate so that the discharging hole is in a closed state or an open state.

In a preferred embodiment, a PID controlled brine proportioning system is used to prepare the brine. The PID control brine proportioning system is composed of a mixer, a salt proportioning pump, a flowmeter, a flow regulating valve, a conductivity probe and the like. The PID control brine proportioning system adjusts the flow of tap water to a fixed value through a flow adjusting valve, detects the conductivity through a conductivity probe to control the amount of saturated brine pumped out by a pump, and then fully and uniformly mixes salt and water through a self-made brine mixer. When the displayed conductivity exceeds a set value, the operating frequency of the pump is reduced through PID control; when the conductivity is displayed below the set point, the operating frequency of the pump is increased. And the proportion of the saline water is controlled by adopting PID, so that the concentration of 6% saline water required by equipment can be accurately proportioned. And secondly, the stable brine concentration is beneficial to maintaining stable voltage and current and stable productivity in the electrolysis process.

In a preferred embodiment, referring to fig. 7, the sodium hypochlorite preparation system comprises an automatic bag breaking device, which comprises a clamping mechanism 61, a bag breaking mechanism 62, a lifting mechanism 63 and a first driving mechanism.

The holding mechanism 61 is used for holding the salt bag 64, and includes, but is not limited to, a wedge clamping mechanism, a screw clamping mechanism, an eccentric clamping mechanism, a hinge clamping mechanism, a centering clamping mechanism, etc., as long as the mechanism can clamp and drive the salt bag 64 to move together, and is within the protection scope of the present embodiment.

The bag breaking mechanism 62 is disposed below the clamping mechanism, and may be a cutter, a spike, etc. for cutting the salt bag 64, and any mechanism capable of breaking the salt bag 64 is within the protection scope of the present embodiment.

The lifting mechanism 63 is in transmission connection with the clamping mechanism and is used for driving the clamping mechanism to lift so as to enable the clamping mechanism to be in contact with or far away from the bag breaking mechanism. The lifting mechanism can be a scissor type, a telescopic type, a sleeve type, a telescopic arm type, a folding arm type and other lifting platforms. In other embodiments, the lifting mechanism may also be a fixed pulley and a rope. In practical application, the fixed pulley can be arranged at a high position, the rope passes through the upper part of the fixed pulley, one end of the rope is connected with the clamping mechanism, the other end of the rope is connected with the motor (namely, the first driving mechanism), and the clamping mechanism is controlled to lift by pulling or loosening the rope through the motor.

And the first driving mechanism is used for driving the lifting mechanism to lift. The first drive mechanism may be a hydraulic drive mechanism, a pneumatic drive mechanism, an electrical drive mechanism, and a mechanical drive mechanism. Preferably, in this embodiment, the first driving mechanism is driven by hydraulic pressure or pneumatic pressure.

In the using process, the clamping mechanism keeps a state of clamping the salt bag 64, the first driving mechanism drives the lifting mechanism to descend, and further drives the clamping mechanism to descend, so that the clamping mechanism drives the salt bag 64 to move towards the bag breaking mechanism, and when the salt bag 64 moves to the base position of the bag breaking mechanism, the salt bag is cut by the bag breaking mechanism. Then, the lifting mechanism is driven to lift through the first driving mechanism, and the clamping mechanism is further driven to gradually lift up to be far away from the bag breaking mechanism; when the salt bag breaking mechanism is lifted to a certain height, the first driving mechanism can further drive the lifting mechanism to descend again, and then drive the clamping mechanism to descend, so that the clamping mechanism drives the salt bag 64 to move towards the direction of the salt bag breaking mechanism, the salt bag 64 is broken secondarily by the salt bag breaking mechanism, materials can flow out of the salt bag 64 more quickly, and the bag breaking process is completed after the salt bag breaking mechanism is repeatedly used for a plurality of times.

For example, when the salt bag 64 needs to be cut, in the using process, the clamping mechanism can clamp the salt bag 64 filled with salt materials, the lifting mechanism drives the clamping mechanism to descend under the driving action of the first driving mechanism until the salt bag 64 contacts the bag breaking mechanism and is cut by the bag breaking mechanism, then under the action of the first driving mechanism, the lifting mechanism drives the clamping mechanism to ascend, and the salt materials are poured out through a bag breaking opening in the salt bag 64 until the salt bags are poured out. Of course, the salt bag 64 can be contacted with the bag breaking mechanism for multiple times by driving the lifting mechanism to reciprocate up and down, so that the area of the bag breaking opening becomes larger, and the salt in the salt bag 64 can be poured and poured quickly.

In a preferred embodiment, as shown in fig. 8, the bag breaking mechanism comprises: a support assembly 621, a bag breaking assembly 622 and a securing assembly 623.

A support member 621 including a first support member including a first slope part and a second slope part; one end part of the first inclined part is connected with the first fixing component, and the other end part of the first inclined part extends along the first inclined direction; one end part of the second inclined part is connected with the second fixing component, and the other end part of the second inclined part extends along the second inclined direction; the first and second inclination directions are both inclined inward.

A bag breaking assembly 622 comprising a first cutting assembly comprising a first cutting portion and a second cutting portion, the first cutting portion being disposed along a first oblique direction; the second cutting portion is disposed in a second oblique direction. The first cutting portion is used for cutting the packing bag, and may be a blade, a saw blade, or the like.

The fixing member 623 includes a first fixing member for fixing both ends to which the first and second inclined portions are connected. The bag breaking assembly 622, the supporting assembly 621 and the fixing assembly 623 are made of anticorrosive materials. The anticorrosive material is a material that inhibits chemical corrosion and electrochemical corrosion of an object to be protected, and includes, but is not limited to, various organic and inorganic paints, glass fiber reinforced plastics, rubber products, inorganic plates, and the like. The adoption of the anticorrosive material can avoid the bag breaking component from being corroded due to long-term contact with the material raw material, and prolong the service life of the salt bag breaking device.

It should be noted that, although the above embodiments have been described herein, the invention is not limited thereto. Therefore, based on the innovative concepts of the present invention, the technical solutions of the present invention can be directly or indirectly applied to other related technical fields by making changes and modifications to the embodiments described herein, or by using equivalent structures or equivalent processes performed in the content of the present specification and the attached drawings, which are included in the scope of the present invention.

Claims

1. A sodium hypochlorite preparation system, comprising:

a gas-liquid separation device for separating gas and liquid in the cathode discharge;

the gas dilution device is used for diluting the concentration of the gas separated by the gas-liquid separation device;

2. The sodium hypochlorite preparation system according to claim 1, wherein the gas-liquid separation device comprises a liquid inlet pipe, a first gas-liquid separation pipe, an inclined tee and a second gas-liquid separation pipe,

3. The sodium hypochlorite preparation system as claimed in claim 1, wherein the gas-liquid separation device is provided with a gas outlet, and the gas dilution device comprises:

and the fan is used for blowing air to the first pipeline.

4. The sodium hypochlorite preparation system of claim 1, wherein said gas dilution means comprises:

and the fan is used for blowing air to the first pipeline.

5. The sodium hypochlorite preparation system according to claim 3 or 4, wherein a choke block is further arranged at the connecting position of the second pipeline and the first pipeline, and the choke block is arranged on the inner wall of the first pipeline and used for blocking the blast air so as to form a negative pressure area at the connecting position of the second pipeline and the first pipeline.

6. The sodium hypochlorite preparation system according to claim 1, wherein the cathode inlet of the electrolytic cell is provided with an alkaline water pipeline, and the alkaline water pipeline is connected with the cathode inlet through an alkaline pump.

7. The sodium hypochlorite preparation system of claim 1, further comprising a brine proportioning system, the brine proportioning system comprising:

8. The sodium hypochlorite preparation system according to claim 7, wherein a bottom plate is arranged on a discharge hole of the salt adding mechanism, the bottom plate is used for covering the discharge hole, at least one discharge hole is arranged on the bottom plate, and a plug board is further arranged at the position of the discharge hole;

9. The sodium hypochlorite preparation system of claim 8, wherein the sodium hypochlorite preparation system comprises an automatic bag breaking device, the automatic bag breaking device comprising:

the clamping mechanism is used for clamping the salt bag;

10. The sodium hypochlorite preparation system of claim 9, wherein said bag breaking mechanism comprises: