CN113445065A

CN113445065A - Sodium hypochlorite generator

Info

Publication number: CN113445065A
Application number: CN202110786627.4A
Authority: CN
Inventors: 左益平; 胡根珍; 龚明
Original assignee: Wuhan Xingda Technology Engineering Co ltd
Current assignee: Wuhan Xingda Technology Engineering Co ltd
Priority date: 2021-07-12
Filing date: 2021-07-12
Publication date: 2021-09-28

Abstract

The invention relates to the technical field of electrolytic equipment, in particular to a sodium hypochlorite generator which comprises an electrolytic cell assembly, a brine tank and a clear water tank, wherein the electrolytic cell assembly comprises an electrolytic cell body, a heat exchange element and an electrode assembly; the brine inlet pipe of the brine tank, the electrode assemblies and the sodium hypochlorite outlet pipe form a series structure; the clean water tank is connected with the heat exchange elements in the electrolytic bath bodies in series through cooling water inlet pipes, and cooling water in the heat exchange elements flows into the brine tank through cooling water outlet pipes. According to the invention, through monitoring of the temperature of the electrolyte inlet, when the temperature of the inlet is low, the cooling water quantitatively extracts the brine from the brine tank, and the heat exchange element exchanges heat with the electrolyte, so that the water temperature in the brine tank is increased, and the temperature of the inlet is further increased. The baffle device on the heat exchange element can effectively reduce the outlet temperature of the electrolyte, and the cooling water flow is subjected to feedback regulation through monitoring the temperature of the electrolyte, so that the temperature of the electrolyte can be effectively controlled.

Description

Sodium hypochlorite generator

Technical Field

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

Background

The sodium hypochlorite solution is used as a real high-efficiency, broad-spectrum and safe powerful sterilization and disinfection medicament, has good affinity with water, can be mutually dissolved with water in any proportion, does not have the potential safety hazards of liquid chlorine, chlorine dioxide and other medicaments, and has the disinfection effect which is known to be equivalent to that of chlorine. Because sodium hypochlorite is easy to decompose and difficult to store and transport, a sodium hypochlorite generator is mostly adopted for on-site preparation in a sterilization site (disinfection and microbicide). The brine type sodium hypochlorite generator takes 3-5 wt% brine and electricity as raw materials to prepare a sodium hypochlorite solution with a certain concentration on site. The prior brine type sodium hypochlorite generator has the following problems:

1. the temperature of the electrolysis outlet is high. When the temperature of the inlet brine is high, the electrolyte impedance is increased due to the gas-liquid mixture formed by the electrolyte impedance and the electrolysis process in the electrolysis process, a large amount of heat is generated in the electrolysis process to increase the temperature of the electrolyte, the degradation of the sodium hypochlorite solution is accelerated, and the temperature of the electrolyte is not too high in the electrolysis process.

2. The inlet temperature of the electrolyte is low. When the temperature of the inlet brine is low, the chlorine evolution electrode is more prone to oxygen evolution reaction at low temperature, the process accelerates the falling of the chlorine evolution electrode coating, and the service life of the electrode is shortened.

3. The power consumption and the salt consumption of the sodium hypochlorite generator are high. Because the byproduct of the generator operation process has hydrogen, the hydrogen is discharged in time to increase the electrolyte impedance, thereby increasing the electrolysis voltage and reducing the electrolysis efficiency. In order to ensure the power consumption of electrolysis, the concentration of the brine in the general generating equipment is usually 3 wt%, and the conversion rate of the chloride ions into hypochlorite is low. To this end, we propose a sodium hypochlorite generator.

Disclosure of Invention

Based on the technical problem that the background art exists, provide one kind and can solve electrolysis outlet temperature height, entry temperature low and salt consumption and the low special-purpose salt water type hypochlorite generator of power consumption.

The invention provides the following technical scheme: a sodium hypochlorite generator comprises an electrolytic cell assembly, a brine tank and a clear water tank, wherein the electrolytic cell assembly comprises an electrolytic cell body, a heat exchange element arranged in the electrolytic cell body and an electrode assembly arranged in the heat exchange element;

the brine inlet pipe of the brine tank, a plurality of electrode assemblies and a sodium hypochlorite outlet pipe form a series structure, and sodium hypochlorite solution electrolyzed by the electrode assemblies flows to a dosing point or a storage tank through a sodium hypochlorite outlet pipe;

the clean water tank is connected with the heat exchange elements in the electrolytic bath bodies in series through cooling water inlet pipes, and cooling water in the heat exchange elements flows into the brine tank through cooling water outlet pipes.

Preferably, the cooling water inlet pipe, the cooling water outlet pipe, the sodium hypochlorite outlet pipe and the brine inlet pipe are all provided with temperature monitoring devices.

Preferably, the cooling water inlet pipe is further provided with an electric regulating valve for regulating flow change and a flow monitoring device for monitoring flow change.

Preferably, the brine inlet pipe is also provided with a flow monitoring device and a pressure monitoring device.

Preferably, the electrolytic cell body comprises a cell body, an electrolyte inlet and outlet, a cooling liquid inlet and outlet and a hydrogen discharge port, wherein the hydrogen discharge port is positioned right above the cell body, and the interface position extends into the upper part of the electrode assembly through the cell body.

Preferably, the electrolytic cell body further comprises a temperature and liquid level monitoring device, the temperature and liquid level monitoring device is installed right above the electrolytic cell body, and the probe of the temperature and liquid level monitoring device extends to the middle of the electrode assembly from the electrolytic cell body.

Preferably, the heat exchange element comprises a heat exchange tube exchanging heat with the electrolyte and a baffling element sealed with the tank body, the baffling element isolates the tank body from the heat exchange tube into a plurality of chambers, each baffling element is provided with a flow passage, and the flow passages between the chambers form a certain angle in the circumferential direction, so that the two flow passages are not overlapped in the circumferential direction.

Preferably, the electrode assembly comprises an anode assembly, a sealing separator, a hydrogen removal membrane element, a bipolar electrode and a cathode assembly; the anode assembly is connected with the anode of the rectifying unit and is formed by connecting a plurality of anodes in parallel; the cathode assembly is connected with the cathode of the rectifying unit and is formed by connecting a plurality of cathodes in parallel; the part of the bipolar electrode, which is opposite to the anode assembly, is a cathode part of the bipolar electrode, and the part of the bipolar electrode, which is opposite to the cathode assembly, is an anode part of the bipolar electrode.

Preferably, the sealing separator and the heat exchange tube form a sealing structure, the electrode assembly is divided into a plurality of electrolytic chambers, and the electrolyte can only pass through the electrodes; a hydrogen discharge hole for collecting and discharging hydrogen is arranged right above the sealing clapboard; and a sewage discharge hole for discharging the electrolytic waste liquid is arranged under the sealing partition plate.

Preferably, the dehydrogenation membrane elements are installed between the cathode and the anode through the installation holes to separate the cathode from the anode, the middle diaphragm of the dehydrogenation membrane elements is used for passing through hydrogen bubbles, and the directions of the two dehydrogenation membrane elements for passing through the bubbles are respectively a vertical direction and a horizontal direction.

The invention has the beneficial effects that:

1. through electrolyte entry temperature monitoring, when the entry temperature was low, the cooling water extracted the salt solution from the salt water tank ration, carries out the heat exchange through heat exchange element and electrolyte, improves the salt incasement temperature, and then improves the entry temperature.

2. The upper baffle device of the heat exchange element can effectively reduce the outlet temperature of the electrolyte, and the cooling water flow is subjected to feedback regulation through monitoring the temperature of the electrolyte, so that the temperature of the electrolyte can be effectively controlled.

3. A liquid level monitoring device is arranged above the electrode component to ensure the safety of the electrolytic reaction.

4. The installation mode of the electrode assembly and the heat exchange tube improves the electrolysis efficiency and reduces the electrolysis efficiency. The hydrogen generated in the electrolysis process is rapidly collected through the hydrogen discharge membrane element and discharged from the top of the electrode assembly through the hydrogen discharge port, so that the power consumption of the equipment is reduced.

5. Due to the arrangement of the hydrogen discharging device, the brine concentration at the electrolysis inlet can be reduced, so that the salt consumption of the equipment is reduced.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a heat exchange element according to the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2 in accordance with the present invention;

FIG. 4 is a schematic view of the structure of an electrode assembly according to the present invention;

FIG. 5 is a side view of the electrode assembly of the present invention;

FIG. 6 is a schematic structural view of a dehydrogenation membrane element according to the present invention;

fig. 7 is a side view of a dehydrogenation membrane element of the present invention.

In the figure: 1. an electrolyzer assembly; 1.1, an electrolytic bath body; 1.1a, a tank body; 1.1b, a hydrogen discharge port; 1.1c, a liquid level monitoring device; 1.2, a heat exchange element; 1.2a, heat exchange tubes; 1.2b, a baffle element; 1.2c, an overflow port; 1.3, an electrode assembly; 1.3a, an anode assembly; 1.3b, sealing the partition plate; 1.3c, a dehydrogenation membrane element; 1.3d, bipolar electrode, 1.3e, cathode assembly; 1.3f, a sewage draining hole; 1.3g, hydrogen discharge holes; 2. a brine tank; 3. a clear water tank; 4. a cooling water inlet pipe; 5. a cooling water outlet pipe; 6. a saline water inlet pipe; 7. a sodium hypochlorite outlet pipe; 8. mounting holes; 9. a middle diaphragm.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, the present invention provides a technical solution: a sodium hypochlorite generator comprises an electrolytic cell component 1, a brine tank 2 and a clear water tank 3, wherein the electrolytic cell component 1 comprises an electrolytic cell body 1.1, a heat exchange element 1.2 arranged in the electrolytic cell body 1.1 and an electrode component 1.3 arranged in the heat exchange element 1.2;

a brine inlet pipe 6 of the brine tank 2, a plurality of electrode assemblies 1.3 and a sodium hypochlorite outlet pipe 7 form a series structure, and a sodium hypochlorite solution electrolyzed by the electrode assemblies 1.3 flows to a dosing point or a storage tank through the sodium hypochlorite outlet pipe 7;

the clean water tank 3 is connected with the heat exchange elements 1.2 in the electrolytic bath bodies 1.1 in series through the cooling water inlet pipe 4, and the cooling water in the heat exchange elements 1.2 flows into the brine tank 2 through the cooling water outlet pipe 5.

And temperature monitoring devices are arranged on the cooling water inlet pipe 4, the cooling water outlet pipe 5, the sodium hypochlorite outlet pipe 7 and the brine inlet pipe 6. The cooling water inlet pipe 4 is also provided with an electric regulating valve for regulating flow change and a flow monitoring device for monitoring flow change. The brine inlet pipe 6 is also provided with a flow monitoring device and a pressure monitoring device.

During the use, open salt solution inlet tube 6, salt solution inlet tube 6 is provided with temperature monitoring, flow monitoring and pressure monitoring device, when the entry temperature is not less than the limit value, electrolyte gets into electrode subassembly 1.3 through salt solution inlet tube 6 in, open the rectifier cabinet and input current carries out the electrolysis reaction, electrode cathode produces hydrogen among the electrolysis process, the positive pole produces chlorine, chlorine and the sodium hydroxide reaction generation sodium hypochlorite solution that produces among the electrolysis process, sodium hypochlorite solution is carried to dosing point or storage tank behind electrolysis trough export, sodium hypochlorite outlet pipe 7. And a temperature monitoring device is arranged on the sodium hypochlorite outlet pipe 7 and feeds back a temperature signal to an upper computer. The host computer receives outlet temperature signal and opens cooling water inlet pipe 4, if sodium hypochlorite exit temperature is higher than the settlement this moment, then opens electrical control valve, by clear water tank 3 as the water inlet, adjusts the water inlet flow, if the temperature is in the settlement within range, then keeps the cooling water inflow. Cooling water enters the heat exchange element 1.2 through the cooling water inlet pipe 4 to carry out heat exchange, the temperature of the electrolyte is reduced, the electrolyte enters the cooling water outlet pipe 5, a temperature monitoring device is arranged on the cooling water outlet pipe 5, and finally the cooling water enters the clear water tank 3.

When 6 temperatures of salt solution inlet tube were less than the lower limit of the limit value, the upper computer received entry temperature feedback signal, opened cooling water inlet tube 4 to reduce 6 flows of salt solution inlet tube, the cooling water was intake from salt solution tank 2, and adjustment cooling water flow, the cooling water was after the heat exchanger heat exchange, and the temperature rose, returned to 6 positions of salt solution inlet tube behind cooling water outlet tube 5.

The electrolytic bath body 1.1 comprises a bath body 1.1a, an electrolyte inlet and outlet, a cooling liquid inlet and outlet and a hydrogen discharge port 1.1b, wherein the hydrogen discharge port 1.1b is positioned right above the bath body 1.1a, and the interface position extends into the upper part of an electrode assembly 1.3 from the bath body 1.1 a. The hydrogen generated in the electrolysis process is rapidly collected through the dehydrogenation membrane element 1.3c and is discharged from the top of the electrode assembly 1.3 through the hydrogen discharge port 1.1b, so that the power consumption of the device is reduced.

The electrolytic bath body 1.1 also comprises a temperature and liquid level monitoring device 1.1c, the temperature and liquid level monitoring device 1.1c is arranged right above the electrolytic bath body, and a probe of the temperature and liquid level monitoring device extends to the middle part of the electrode component 1.3 from the bath body 1.1 a. A temperature and liquid level monitoring device 1.1c is arranged above the electrode component 1.3 to ensure the safety of the electrolytic reaction.

As shown in fig. 2 and 3, the heat exchange element 1.2 includes a heat exchange tube 1.2a for exchanging heat with the electrolyte and a deflection element 1.2b for forming a seal with the tank body 1.1a, the deflection element 1.2b separates the tank body 1.1a and the heat exchange tube 1.2a into a plurality of chambers, each deflection element 1.2b has an overflow port 1.2c, and the overflow ports 1.2c between the chambers form a certain angle in the circumferential direction, so as to ensure that the two overflow ports 1.2c do not overlap in the circumferential direction.

The heat exchange element 1.2 is matched with the tank body 1.1a through a plurality of baffling elements 1.2b to ensure radial installation in the tank body 1.1a, axial installation is ensured through end face position and tank body 1.1a end face installation, and a plurality of baffling elements 1.2b and the tank body 1.1a form a plurality of sealed isolation chambers to ensure heat exchange efficiency. And the baffling element 1.2b forms a certain angle in the circumferential direction, plays a baffling role in water flow, prolongs the heat exchange time and further improves the heat exchange efficiency.

In order to improve the heat exchange effect, the heat exchange tube 1.2a adopts the core to be pure copper, and the outward appearance is wrapped up with pure titanium, compares in stainless steel or pure titanium, can effectively improve heat exchange efficiency. Because the electrolytic generation place of the inner wall of the heat exchange tube 1.2a, the surface titanium material can be corroded by the stray current in the electrolytic process, and therefore, the ruthenium-iridium coating is adopted on the inner wall of the heat exchange tube 1.2a, and the copper-titanium alloy tube is corroded.

As shown in fig. 4 and 5, the electrode assembly 1.3 includes an anode assembly 1.3a, a sealed separator 1.3b, a hydrogen removal membrane element 1.3c, a bipolar electrode 1.3d, a cathode assembly 1.3 e; the anode assembly 1.3a is connected with the anode of the rectifying unit and is formed by connecting a plurality of anodes in parallel; the cathode component 1.3e is connected with the cathode of the rectifying unit and is formed by connecting a plurality of cathodes in parallel; the part of the bipolar electrode 1.3d opposite to the anode assembly 1.3a is the cathode part of the bipolar electrode 1.3d, and the part of the bipolar electrode 1.3e opposite to the cathode assembly 1.3e is the anode part of the bipolar electrode 1.3 d. The electrolysis of dilute brine is effected by means of the electrode assembly 1.3, and therefore the design of the electrode assembly 1.3 is also very important.

The electrodes are parallel to each other with a certain gap, and the hydrogen removal membrane element 1.3c ensures the distance between the parallel electrodes. When dilute brine is introduced between the electrode assemblies 1.3, the electrodes are turned on. Although the bipolar electrode 1.3d is not directly connected with the power supply, under the action of the induced charge principle, the two ends of the bipolar electrode are respectively charged with positive and negative charges, so that a loop is formed with a water path, current flows from a high potential to a low potential and respectively passes through the anode assembly 1.3a, the bipolar cathode portion, the bipolar anode portion and the cathode assembly 1.3e to form a loop, and the electrodes are in a series structure.

The end part of the anode component 1.3a is directly connected with the anode of the rectifier cabinet through a cable, and the end part of the cathode component 1.3e is connected with the cathode of the rectifier cabinet through a cable. Electrode mid-mounting has temperature and liquid level probe, and flow reduction or valve trouble appear when the electrolysis process lead to the electrolysis process flow to reduce, and during the quick upper part of electrolyte temperature, the host computer will carry out fault alarm and cut off the power to equipment to guarantee the safety and stability operation of equipment.

The sealing partition plates 1.3b and the heat exchange tubes 1.2a form a sealing structure, the electrode assembly 1.3 is decomposed into a plurality of electrolytic chambers, and electrolyte can only pass through the electrodes; a hydrogen discharge hole 1.3g for collecting and discharging hydrogen is arranged right above the sealing clapboard 1.3 b; a sewage discharge hole 1.3f for discharging the electrolytic waste liquid is arranged under the sealing clapboard 1.3 b.

The electrode assembly 1.3 is divided into a plurality of electrolytic chambers by the sealing separators 1.3b on the electrode assembly 1.3, and the sealing elements ensure that each electrolytic chamber is independent from each other, and electrolyte can only pass through the gaps between the electrodes, thereby ensuring the electrolytic efficiency in the electrolytic process.

Hydrogen generated in the electrolytic reaction process is released from the cathode of the electrode, part of the hydrogen rises to the top end of the electrode rapidly and stays at the top because the density of the hydrogen is lower than that of liquid, and most of the hydrogen forms a gas-liquid mixture with electrolyte under the action of pressure if the hydrogen cannot be discharged from the top rapidly, so that the impedance of the electrolyte is increased. The impedance of the electrolyte is increased, so that the electrolytic voltage in the electrolytic process is improved, a large amount of electric energy is converted into heat energy, and the efficiency of equipment is reduced. Because the electrolytic voltage of the chlorine evolution electrode is lower than that of the oxygen evolution reaction in the electrolytic reaction, if the electrolytic voltage is over-constant, the chlorine evolution reaction is not facilitated, and therefore, under the condition of not performing independent hydrogen discharge, the inlet brine concentration is required to be higher than 3 wt%, and the salt consumption of equipment is greatly increased.

As shown in fig. 6 and 7, the hydrogen removal membrane elements 1.3c are mounted between the cathode and the anode through the mounting holes 8, the cathode and the anode are isolated, the intermediate membrane 9 in the hydrogen removal membrane elements 1.3c is used to pass hydrogen bubbles, and the directions in which the two hydrogen removal membrane elements 1.3c pass through the bubbles are the vertical direction and the horizontal direction, respectively.

The top end of the electrode sealing clapboard 1.3b is provided with a hole, and the top end is connected with the hydrogen discharge port 1.1b of the tank body 1.1 a. Part of hydrogen generated in the electrolysis process quickly overflows from the solution and quickly overflows from the tank body through a hydrogen discharge port 1.1 b; part of the hydrogen and the electrolyte form a gas-liquid mixture.

The hydrogen removing membrane elements 1.3c in the electrode assembly 1.3 are arranged between the cathode and the anode of the electrode, and the front and the back hydrogen removing membrane elements 1.3c allow an included angle of 90 degrees to be formed between the vertical direction and the horizontal direction, namely the front and the back hydrogen removing membranes, after the hydrogen removing membrane mounting position is clamped by a fastening piece, a stable distance can be kept between the electrodes along with the progress of the electrolytic reaction. Meanwhile, the installation material of the dehydrogenation membrane element 1.3c is made of a plastic material with corrosion resistance, good insulating property and good heat resistance. After the gas-liquid mixture formed by the electrolyte sequentially passes through two adjacent hydrogen removal membrane elements 1.3c, the hydrogen mixed in the electrolyte can be rapidly removed, and part of the hydrogen rapidly rises to the top of the electrode and is finally discharged from a hydrogen discharge port 1.1 b.

The liquid level of electrolyte can change along with the discharge of hydrogen in the electrolytic process, and in order to ensure the safe operation of the electrode, a temperature and liquid level monitoring device 1.1c is arranged in the middle of an electrode component 1.3, and when the liquid level is lower than a fixed value, the equipment alarms and stops, so that the normal operation of the equipment is ensured.

The hydrogen generated in the electrolysis process is discharged in time, the electrode spacing is adjusted, the electrolysis voltage is lower, the brine concentration at the inlet of the equipment can be reduced, and the salt consumption of the equipment is further reduced.

According to the invention, through monitoring of the inlet temperature of the electrolyte, when the inlet temperature is low, the cooling water quantitatively extracts brine from the brine tank 2, and exchanges heat with the electrolyte through the heat exchange element 1.2, so that the water temperature in the brine tank is increased, and the inlet temperature is further increased. The baffle device on the heat exchange element 1.2 can effectively reduce the outlet temperature of the electrolyte, and the monitoring of the temperature of the electrolyte can feed back and adjust the flow of cooling water, thereby effectively controlling the temperature of the electrolyte.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. A sodium hypochlorite generator which is characterized in that: the electrolytic cell comprises an electrolytic cell component (1), a brine tank (2) and a clear water tank (3), wherein the electrolytic cell component (1) comprises an electrolytic cell body (1.1), a heat exchange element (1.2) arranged in the electrolytic cell body (1.1) and an electrode component (1.3) arranged in the heat exchange element (1.2);

the brine inlet pipe (6) of the brine tank (2), the electrode assemblies (1.3) and the sodium hypochlorite outlet pipe (7) form a series structure, and sodium hypochlorite solution electrolyzed by the electrode assemblies (1.3) flows to a dosing point or a storage tank through the sodium hypochlorite outlet pipe (7);

the clean water tank (3) is connected with heat exchange elements (1.2) in the electrolytic bath bodies (1.1) in series through cooling water inlet pipes (4), and cooling water in the heat exchange elements (1.2) flows into the brine tank (2) through cooling water outlet pipes (5).

2. A hypochlorite generator as claimed in claim 1, wherein: and temperature monitoring devices are arranged on the cooling water inlet pipe (4), the cooling water outlet pipe (5), the sodium hypochlorite outlet pipe (7) and the brine inlet pipe (6).

3. A hypochlorite generator as claimed in claim 2, wherein: and the cooling water inlet pipe (4) is also provided with an electric regulating valve for regulating flow change and a flow monitoring device for monitoring flow change.

4. A hypochlorite generator as claimed in claim 2, wherein: and the brine inlet pipe (6) is also provided with a flow monitoring device and a pressure monitoring device.

5. A hypochlorite generator as claimed in claim 1, wherein: the electrolytic cell body (1.1) comprises a cell body (1.1a), an electrolyte inlet and outlet, a cooling liquid inlet and outlet and a hydrogen discharge port (1.1b), wherein the hydrogen discharge port (1.1b) is positioned right above the cell body (1.1a), and the interface position of the hydrogen discharge port is extended into the upper part of the electrode assembly (1.3) through the cell body (1.1 a).

6. A hypochlorite generator as claimed in claim 1, wherein: the electrolytic cell body (1.1) further comprises a temperature and liquid level monitoring device (1.1c), the temperature and liquid level monitoring device (1.1c) is installed right above the electrolytic cell body, and a probe of the electrolytic cell body extends to the middle of the electrode assembly (1.3) from the cell body (1.1 a).

7. A hypochlorite generator as claimed in claim 1, wherein: the heat exchange element (1.2) comprises a heat exchange tube (1.2a) which exchanges heat with electrolyte and a baffling element (1.2b) which is sealed with the tank body (1.1a), the baffling element (1.2b) isolates the tank body (1.1a) from the heat exchange tube (1.2a) into a plurality of chambers, each baffling element (1.2b) is provided with an overflowing port (1.2c), and the overflowing ports (1.2c) between the chambers form a certain angle in the circumferential direction, so that the two overflowing ports (1.2c) are not overlapped in the circumferential direction.

8. A hypochlorite generator as claimed in claim 1, wherein: the electrode assembly (1.3) comprises an anode assembly (1.3a), a sealed separator (1.3b), a hydrogen removal membrane element (1.3c), a bipolar electrode (1.3d) and a cathode assembly (1.3 e); the anode assembly (1.3a) is connected with the anode of the rectifying unit and is formed by connecting a plurality of anodes in parallel; the cathode assembly (1.3e) is connected with the cathode of the rectifying unit and is formed by connecting a plurality of cathodes in parallel; the part of the bipolar electrode (1.3d) opposite to the anode assembly (1.3a) is the cathode part of the bipolar electrode (1.3d), and the part of the bipolar electrode (1.3e) opposite to the cathode assembly (1.3e) is the anode part of the bipolar electrode (1.3 d).

9. A hypochlorite generator as claimed in claim 8, wherein: the sealing separator (1.3b) and the heat exchange tube (1.2a) form a sealing structure, the electrode assembly (1.3) is decomposed into a plurality of electrolytic chambers, and electrolyte can only pass through the electrodes; a hydrogen discharge hole (1.3g) for collecting and discharging hydrogen is arranged right above the sealing clapboard (1.3 b); a sewage draining hole (1.3f) for discharging the electrolytic waste liquid is arranged right below the sealing clapboard (1.3 b).

10. A hypochlorite generator as claimed in claim 8, wherein: the dehydrogenation membrane elements (1.3c) are arranged between a cathode and an anode through mounting holes (8) to isolate the cathode and the anode, an intermediate diaphragm (9) in the dehydrogenation membrane elements (1.3c) is used for passing hydrogen bubbles, and the directions of the two dehydrogenation membrane elements (1.3c) allowing the bubbles to pass are respectively a vertical direction and a horizontal direction.