A sodium hypochlorite continuous production device and method

Abstract

This invention belongs to the field of sodium hypochlorite production technology, specifically a continuous sodium hypochlorite production apparatus and method. Addressing the problems of existing apparatuses failing to effectively increase the contact area between chlorine and alkali, requiring multiple spray towers for multi-stage reactions, and increasing sodium hypochlorite production costs, this apparatus incorporates spray towers with built-in fixed and rotating cylinders. Chlorine is diffused in layers through inclined troughs and baffles, increasing the contact area. An intermittent exhaust structure prevents chlorine accumulation. A drive structure rotates the spray nozzles, expanding the alkali spray range. A U-shaped return pipe and a guide fan redirect unreacted chlorine back to the reaction chamber below, improving chlorine utilization. By optimizing chlorine diffusion, alkali spraying, and chlorine recovery methods, this apparatus significantly improves the reaction efficiency between chlorine and alkali, making it suitable for continuous sodium hypochlorite production.

Description

Technical Field

[0001] This invention relates to the field of sodium hypochlorite production technology, and in particular to a continuous sodium hypochlorite production apparatus and method. Background Technology

[0002] Sodium hypochlorite is an inorganic compound with a chlorine-like odor and strong oxidizing properties. Sodium hypochlorite solutions are mainly used for disinfection, sterilization, and water treatment. Currently, there are several main production processes for sodium hypochlorite: 1) the bleaching powder metathesis method, which has a high production cost; 2) the electrolysis method, suitable for preparing low-concentration, small-scale sodium hypochlorite solutions; and 3) the alkaline chlorination method, which has simple equipment, is easy to control, and has low production costs, making it widely used.

[0003] For example, utility model patent CN222586526U discloses a continuous production apparatus for sodium hypochlorite. However, the above technical solution still has the following problems in the continuous production of sodium hypochlorite: 1. When the above technical solution is used, the chlorine gas is disturbed by the combination of the baffle rod and the porous gas distribution plate, thereby increasing the contact area between the alkali solution and the chlorine gas. However, as the chlorine gas is continuously injected, it will flow upward along the holes of the porous gas distribution plate and accumulate radially along the holes. As a result, the alkali solution can only spray the uppermost layer of chlorine gas during spraying, while the chlorine gas in the lower layer cannot react fully, resulting in a decrease in sodium hypochlorite production efficiency. 2. In the continuous production of sodium hypochlorite, unreacted chlorine gas needs to be fully reacted through multiple spray towers, resulting in a low chlorine reaction rate in a single spray tower. To ensure that the chlorine gas can be fully reacted, multiple spray towers need to be used in conjunction to carry out multi-stage reactions, which in turn increases the production cost of sodium hypochlorite. 3. When spraying chlorine gas through the nozzle, the sprayed alkaline solution cannot spray the chlorine gas over the largest area, resulting in insufficient reaction between chlorine gas and alkaline solution, which affects the production efficiency of sodium hypochlorite. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing methods that cannot effectively increase the contact area between chlorine and alkali, require multiple spray towers for multi-stage reactions, and increase the production cost of sodium hypochlorite. Therefore, this invention proposes a continuous sodium hypochlorite production apparatus and method.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A continuous sodium hypochlorite production apparatus, comprising: A spray tower, wherein a chlorine gas injection pipe is fixedly connected through one side of the spray tower, an exhaust pipe for discharging unreacted chlorine gas is fixedly connected to the top of the spray tower, and a drain pipe for discharging alkaline solution and sodium hypochlorite solution is fixedly connected to the bottom of the spray tower. A fixed cylinder and a rotating cylinder are provided, wherein the fixed cylinder is disposed inside the spray tower, the rotating cylinder is rotatably connected to the top of the fixed cylinder, and the top end of the air injection pipe extends into the fixed cylinder; The layered exhaust structure includes multiple inclined grooves disposed inside the rotating cylinder. The inclined grooves are inclined and the inner walls on both sides that are far apart from each other are arc-shaped, which is used to drive the rotating cylinder to rotate when chlorine gas is discharged. An intermittent venting structure includes a fixed ring and a sealing plug, wherein the fixed ring is fixed inside the venting pipe and the sealing plug is used to intermittently seal the fixed ring; The injection pipe rotates and penetrates the top inner wall of the spray tower; Multiple nozzles I and multiple nozzles II are installed inside the spray tower; A drive structure for driving the nozzle I and nozzle II to rotate; In this process, chlorine gas is injected into the fixed cylinder through the injection pipe, enters the rotating cylinder, and is discharged obliquely upward through the inclined groove. The arc-shaped inner wall of the inclined groove drives the rotating cylinder to rotate, so that the chlorine gas is dispersed and discharged, increasing the contact area with the alkaline solution. At the same time, the intermittent exhaust structure intermittently seals the fixed ring through the sealing plug to prevent the continuous injection of chlorine gas from causing accumulation.

[0006] In one possible design, the stratified exhaust structure further includes a fixed column and a conical platform. The fixed column is fixed inside the fixed cylinder by a horizontal plate. The top of the fixed column rotates through the rotating cylinder and is fixed with the conical platform. Multiple baffles are fixed at the bottom of the conical platform to block the chlorine gas discharged from the inclined chute, so that the upper layer of chlorine gas flows outward along the gap between the baffle and the conical platform, and the lower layer of chlorine gas rotates and is discharged along the trajectory of the inclined chute, thereby achieving stratified and dispersed discharge of chlorine gas.

[0007] In one possible design, the intermittent exhaust structure further includes multiple slide rods, tension springs, L-shaped rings, lifting rings, inclined grooves, ball bearings, rope I, and rope II. The slide rods slide through the fixed ring and their top ends are fixedly connected to the bottom of the sealing plug. The tension springs are mounted on the slide rods and are used to drive the sealing plug upwards to release the seal. The L-shaped rings are longitudinally slidably connected to the inner wall of the fixed cylinder. The lifting rings are rotatably sleeved on the outer wall of the L-shaped ring and longitudinally slidably connected to the inner wall of the rotating cylinder. The inclined grooves are located on the inner wall of the rotating cylinder. The inner wall has the ball bearings disposed within the inclined groove. One end of rope I is fixed to the ball bearings, and the other end is fixedly connected to the top of the lifting ring. One end of rope II is fixed to the bottom of the L-shaped ring, and the other end extends to the injection pipe and is fixedly connected to the bottom of the sealing plug. When the rotating cylinder rotates, the ball bearings move along the inclined groove under the action of centrifugal force, pulling the lifting ring and L-shaped ring upwards through rope I, and then pulling the sealing plug downwards to seal the fixing ring through rope II. When the rotation speed of the rotating cylinder decreases, the sealing plug moves upwards under the push of the tension spring and chlorine gas, realizing intermittent injection.

[0008] In one possible design, the driving structure includes a liquid storage ring, a liquid guide pipe I, and a liquid guide pipe II. The liquid storage ring is rotatably connected to the inner wall of the spray tower, and multiple nozzles I are fixed inside the liquid storage ring. Two liquid guide pipes I are fixedly connected to the bottom of both sides of the injection pipe, and one end of the liquid guide pipe I extends into the liquid storage ring. Multiple liquid guide pipes II are fixedly connected to the outer wall of the injection pipe, and multiple nozzles II are fixed to the bottom of the liquid guide pipes II. The nozzles I and II are arranged alternately, and the nozzles I are set at an angle upward. When the injection pipe rotates, it drives the liquid storage ring and the liquid guide pipes II to rotate. The nozzles II spray alkaline solution downward, and the nozzles I spray alkaline solution at an angle upward, increasing the contact area between the alkaline solution and chlorine gas.

[0009] In one possible design, a drive motor is fixed to the top of the spray tower, and bevel gears are fixedly fitted on both the output shaft of the drive motor and the outer wall of the injection pipe. The two bevel gears mesh with each other to drive the injection pipe to rotate.

[0010] In one possible design, the inner wall of the rotating cylinder is fixed with multiple limiting plates to prevent the balls from disengaging from the inclined groove; the inner wall of the rotating cylinder is rotatably connected with multiple guide wheels I to guide the rope I.

[0011] In one possible design, the inner wall of the air injection pipe is rotatably connected to multiple guide wheels II, and the outer wall of the air injection pipe is rotatably connected to multiple guide wheels III, with the guide wheels II and III located inside a fixed cylinder for guiding the rope II.

[0012] In one possible design, the outer wall of the spray tower is provided with multiple U-shaped return gas pipes, both ends of which extend into the spray tower, with the upper end located above the liquid guide pipe II and the lower end located below the conical platform, for re-introducing the unreacted chlorine gas in the upper layer into the lower reaction; a gas guide fan is rotatably connected inside the U-shaped return gas pipe for discharging chlorine gas into the U-shaped return gas pipe.

[0013] In one possible design, multiple L-shaped rods are fixed to the outer wall of the injection pipe, and rotating rings are fixed to the bottom ends of the multiple L-shaped rods. The rotating rings are rotatably connected to the inner wall of the spray tower. Multiple inclined air guide plates are fixed to the bottom of the rotating rings to discharge chlorine gas to the surroundings. The rotating shaft of the air guide fan is fixed with a rotating shaft, and a rubber wheel is fixed to one end of the rotating shaft. The bottom of the rubber wheel abuts against the top of the rotating ring to drive the air guide fan to rotate through friction when the rotating ring rotates.

[0014] This application discloses a method of using a continuous sodium hypochlorite production apparatus, comprising the following steps: S1. Chlorine injection and uniform distribution: Chlorine is injected into the fixed cylinder through the injection pipe, so that the chlorine enters the rotating cylinder and is sprayed out through the inclined groove on its surface; the sprayed chlorine drives the rotating cylinder to rotate, so as to achieve uniform distribution of chlorine in the spray tower.

[0015] S2. Chlorine gas stratification and diversion: The conical platform and baffle located above the inclined trough block the upper layer of chlorine gas, causing it to diffuse along the circumferential plane of the conical platform, while the lower layer of chlorine gas continues to rotate and be discharged, thus realizing the stratified diffusion of chlorine gas to increase the contact area with the alkaline solution.

[0016] S3. Centrifugal Interruption and Intermittent Control: When the rotating cylinder rotates, the balls move outward along the inclined groove under the action of centrifugal force, pull the L-shaped ring through the rope, and pull down the sealing plug through another rope to close the gas path; when the speed decreases, the sealing plug opens again under the action of the tension spring and gas pressure to realize the intermittent injection of chlorine gas.

[0017] S4. Alkali Rotary Spray: The drive motor drives the injection pipe to rotate via bevel gear, causing the liquid storage ring, the liquid guide pipe and different nozzles to rotate together, realizing multi-angle alkali spraying downward and obliquely upward.

[0018] S5. Recycling of unreacted chlorine: Unreacted chlorine enters the U-shaped return pipe under the guidance of the rotating ring and the inclined gas guide plate. At the same time, the rotating ring drives the gas guide fan to re-inject the gas into the bottom of the tower to participate in the reaction.

[0019] S6. Residual chlorine treatment and sodium hypochlorite collection: The sodium hypochlorite solution generated in the reaction is discharged from the drain pipe, and the residual chlorine that cannot be reused is introduced into the next stage reaction tower through the exhaust pipe.

[0020] Beneficial effects: In this invention, chlorine gas enters the rotating cylinder and is discharged obliquely upward through the inclined chute into the spray tower. The inner wall of the inclined chute is arc-shaped, which drives the rotating cylinder to rotate when the chlorine gas is discharged into the spray tower, thereby making the chlorine gas evenly discharged in all directions. The chlorine gas in the upper layer is blocked by the baffle, while the chlorine gas in the lower layer is still discharged into the spray tower along the trajectory of the inclined chute. The upper and lower layers of chlorine gas are dispersed and discharged, which increases the contact area between chlorine gas and alkaline solution and improves the chlorine gas reaction efficiency. In this invention, when the rotating cylinder rotates, the ball bearings move outward along the trajectory of the inclined groove under the action of centrifugal force. The ball bearings pull the lifting ring and the L-shaped ring upward through rope I, and the L-shaped ring pulls the sealing plug downward through rope II. The sealing plug seals the fixing ring, which can intermittently inject chlorine gas to ensure that the chlorine gas can react fully and avoid excessive chlorine gas injection leading to chlorine gas accumulation, which would affect the production efficiency of sodium hypochlorite. In this invention, the injection pipe drives the storage ring and the guide pipe II to rotate, the nozzle II sprays the alkaline solution downward, and the nozzle I sprays the alkaline solution obliquely upward. The sprayed alkaline solution falls under the action of gravity, and the alkaline solution can scatter during the falling process, thereby increasing the contact area between the alkaline solution sprayed by the nozzle I and the chlorine gas, and improving the reaction rate between the chlorine gas and the alkaline solution. In this invention, the injection pipe drives the rotating ring and multiple inclined gas guide plates to rotate via an L-shaped rod. The multiple inclined gas guide plates can discharge chlorine gas to all directions, making it easy to inject chlorine gas into the U-shaped return gas pipe. The friction between the rotating ring and the rubber wheel drives the gas guide fan to rotate, and the unreacted chlorine gas is reinjected into the lower part of the spray tower through the U-shaped return gas pipe, so that the chlorine gas can react again, which greatly improves the reaction efficiency of chlorine gas and eliminates the need to use a large number of reaction towers for circulation.

[0021] In this invention, the stratified exhaust structure ensures uniform dispersion of chlorine gas, increases the contact area with the alkaline solution, and improves reaction efficiency. The intermittent exhaust structure prevents chlorine gas accumulation and ensures full reaction. The drive structure rotates the nozzle, expanding the alkaline solution spray range and further improving reaction efficiency. The U-shaped return pipe and the air guide fan effectively recover unreacted chlorine gas, achieving resource recycling. This device can operate stably and meet the needs of large-scale sodium hypochlorite production. Attached Figure Description

[0022] Figure 1 A three-dimensional structural schematic diagram of a continuous sodium hypochlorite production apparatus provided by the present invention; Figure 2 This is a three-dimensional cross-sectional structural diagram of a continuous sodium hypochlorite production apparatus provided by the present invention. Figure 3 A three-dimensional exploded view of the fixed sleeve, fixed cylinder, and conical platform of a continuous sodium hypochlorite production apparatus provided by the present invention; Figure 4This is a cross-sectional view of the fixed sleeve, fixed cylinder, and rotating cylinder of a continuous sodium hypochlorite production apparatus provided by the present invention. Figure 5 for Figure 4 Enlarged structural diagram at point A; Figure 6 A three-dimensional exploded structural diagram of the L-shaped ring, rope II and sealing plug of a continuous sodium hypochlorite production apparatus provided by the present invention; Figure 7 A three-dimensional cross-sectional view of the rotating cylinder of a continuous sodium hypochlorite production apparatus provided by the present invention, and a three-dimensional structural schematic diagram of the ball bearings and rope I. Figure 8 A cross-sectional view of the rotating cylinder of a continuous sodium hypochlorite production apparatus provided by the present invention; Figure 9 This is a three-dimensional cross-sectional view of the liquid storage ring in a continuous sodium hypochlorite production apparatus provided by the present invention. Figure 10 A three-dimensional structural schematic diagram of the U-shaped return gas pipe, rotating ring, and inclined gas guide plate of a continuous sodium hypochlorite production device provided by the present invention; Figure 11 A three-dimensional exploded structural diagram of the rubber wheel and inclined air guide plate of a continuous sodium hypochlorite production device provided by the present invention; Figure 12 for Figure 7 Enlarged view of section B.

[0023] In the diagram: 1. Spray tower; 2. Exhaust pipe; 3. Drain pipe; 4. Gas injection pipe; 5. Fixing rod; 6. Fixing sleeve; 7. Fixing cylinder; 8. Rotating cylinder; 9. Inclined trough; 10. Fixing column; 11. Conical truss; 12. Baffle; 13. Inclined trough; 14. Ball bearing; 15. Limiting plate; 16. Guide wheel I; 17. Rope I; 18. Lifting ring; 19. Fixing ring; 20. Sliding rod; 21. Sealing plug; 22. Pulling rod. 23. Spring; 24. L-shaped ring; 25. Rope II; 26. Guide wheel II; 27. Guide wheel III; 28. Injection pipe; 29. ​​Drive motor; 30. Bevel gear; 31. Liquid storage ring; 32. Liquid guide pipe I; 33. Nozzle I; 34. Liquid guide pipe II; 35. Nozzle II; 36. U-shaped return air pipe; 37. Air guide fan; 38. Rotating shaft; 39. L-shaped rod; 40. Rotating ring; 41. Angled air guide plate; 42. Rubber wheel. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0025] In one embodiment: Refer to Figures 1-9 A continuous sodium hypochlorite production apparatus mainly includes a spray tower 1, an injection pipe 4, an exhaust pipe 2, a fixed sleeve 6, a fixed cylinder 7, a rotating cylinder 8, a stratified exhaust structure, an intermittent exhaust structure, a liquid injection pipe 27, nozzle I 32, nozzle II 34, and a drive structure. As the main reaction site, the rational design of the internal structure of the spray tower 1 is crucial for improving the reaction rate between chlorine gas and alkaline solution.

[0026] Reference Figure 1 and Figure 2 The spray tower 1 is made of corrosion-resistant material to ensure it is not corroded by alkaline solutions and chlorine gas during long-term use. A chlorine gas injection pipe 4, made of stainless steel, is fixedly connected to one side of the spray tower 1 to ensure a stable and smooth injection of chlorine gas into the tower. An exhaust pipe 2, also made of corrosion-resistant material, is fixedly connected to the top of the spray tower 1 to discharge unreacted chlorine gas. A drain pipe 3, also made of corrosion-resistant material, is fixedly connected to the bottom of the spray tower 1 to discharge alkaline solutions and sodium hypochlorite solution. The drain pipe 3 is connected to the bottom of the spray tower 1 via a flange to ensure a tight connection and prevent leakage, thus facilitating the smooth discharge of the reacted solutions.

[0027] Reference Figures 2-4 Multiple fixing rods 5 are fixed to the inner wall of the spray tower 1. The number of fixing rods 5 is determined according to the diameter of the spray tower 1 and the structural strength requirements. The ends of the multiple fixing rods 5 that are close to each other are fixed to the same fixing sleeve 6, and the fixing sleeve 7 is fixed inside the fixing sleeve 6.

[0028] Reference Figure 3 and Figure 4 A fixed cylinder 7 and a rotating cylinder 8 are installed inside the spray tower 1, with the rotating cylinder 8 rotating on top of the fixed cylinder 7. A fixed column 10 is fixed inside the fixed cylinder 7 via a horizontal plate. The top of the fixed column 10 rotates through the rotating cylinder 8 and is fixed to a conical platform 11. Multiple baffles 12 are fixed to the bottom of the conical platform 11, and are evenly distributed at the bottom of the conical platform 11. The function of the baffles 12 is to block the chlorine gas discharged from the inclined trough 9, making the chlorine gas discharge more uniform.

[0029] Reference Figure 4 , Figure 7 , Figure 12 and Figure 8 The rotating cylinder 8 is equipped with multiple inclined troughs 9, the number of which is determined by the diameter of the rotating cylinder 8 and the chlorine emission requirements. The inclined troughs 9 are set at an inclination angle between 30° and 60°, used to discharge chlorine gas obliquely upwards into the spray tower 1. The inner walls of the two mutually distant sides of the inclined troughs 9 are both arc-shaped. This arc-shaped design drives the rotating cylinder 8 to rotate during chlorine emission, ensuring that the chlorine gas is evenly discharged in all directions.

[0030] Chlorine gas is injected into the fixed cylinder 7 through the gas injection pipe 4. The chlorine gas then enters the rotating cylinder 8 and is discharged obliquely upward through the inclined chute 9 into the spray tower 1. Because the inner wall of the inclined chute 9 is arc-shaped, the chlorine gas discharge into the spray tower 1 generates a tangential force on the rotating cylinder 8, driving it to rotate. As the chlorine gas is discharged through the inclined chute 9, the upper layer of chlorine gas is blocked by the baffle 12, causing it to flow outward along the plane along the gap between the baffle 12 and the conical platform 11. Meanwhile, the lower layer of chlorine gas continues to rotate and discharge into the spray tower 1 along the discharge trajectory of the inclined chute 9. This disperses the upper and lower layers of chlorine gas, increasing the contact area between the chlorine gas and the alkaline solution in the later stages and improving the chlorine reaction efficiency.

[0031] Reference Figure 5 and Figure 6 The intermittent venting structure includes components such as a fixed ring 19, a sealing plug 21, sliding rods 20, tension springs 22, an L-shaped ring 23, a lifting ring 18, a beveled groove 13, ball bearings 14, rope I 17, and rope II 24. The fixed ring 19 is fixed inside the air injection pipe 4. Multiple sliding rods 20 slide through the fixed ring 19 and are evenly distributed around it. The tops of the multiple sliding rods 20 are fixedly connected to the bottom of the sealing plug 21. The sealing plug 21 is made of rubber and has good sealing performance; its diameter is slightly larger than the inner diameter of the fixed ring 19 to ensure effective sealing of the fixed ring 19. Tension springs 22 are provided on the outer walls of the multiple sliding rods 20. The tops of the tension springs 22 are fixedly connected to the bottom of the fixed ring 19 via spring seats, and the bottoms of the tension springs 22 are fixedly connected to the outer wall of the sliding rods 20 via spring seats. These springs are used to drive the sealing plug 21 upwards, releasing the seal on the fixed ring 19.

[0032] Reference Figures 4-7 , Figure 12 The inner wall of the fixed cylinder 7 is longitudinally slidably connected to an L-shaped ring 23. A lifting ring 18 is rotatably fitted onto the outer wall of the L-shaped ring 23, and the outer wall of the lifting ring 18 is longitudinally slidably connected to the inner wall of the rotating cylinder 8. The inner wall of the rotating cylinder 8 has multiple inclined grooves 13, each containing a ball bearing 14 made of steel. One side of each ball bearing 14 is fixed with a rope I 17, and the bottom ends of each rope I 17 are fixedly connected to the top of the lifting ring 18, used to drive the lifting ring 18 and the L-shaped ring 23 upwards under the centrifugal force of the ball bearing 14. The bottom of the L-shaped ring 23 is fixed with multiple ropes II 24, the bottom ends of which extend to the air injection pipe 4 and are fixedly connected to the bottom of the sealing plug 21, used to cause the sealing plug 21 to move downwards under the centrifugal force of the ball bearing 14 and seal the fixed ring 19.

[0033] When the rotating cylinder 8 rotates under the action of chlorine gas, the ball bearing 14 moves outward along the trajectory of the inclined groove 13 under the action of centrifugal force. Since the ball bearing 14 is fixedly connected to the rope I 17, the ball bearing 14 pulls the lifting ring 18 and the L-shaped ring 23 upward through the rope I 17. The L-shaped ring 23 pulls the sealing plug 21 downward through the rope II 24, and the centrifugal force on the ball bearing 14 is greater than the elastic force of the tension spring 22 and the driving force of the chlorine gas pushing the sealing plug 21 upward. At this time, the sealing plug 21 seals the fixing ring 19, blocking the injection of chlorine gas. When the rotation speed of the rotating drum 8 decreases, the centrifugal force of the ball bearing 14 decreases, and the sealing plug 21 moves upward again under the tension of the tension spring 22 and the push of chlorine gas, thus injecting chlorine gas. This reciprocating operation allows for intermittent injection of chlorine gas, ensuring that the chlorine gas can react fully and avoiding excessive chlorine gas injection that could lead to chlorine gas accumulation and affect the production efficiency of sodium hypochlorite.

[0034] The spray tower 1 is equipped with a pressure relief valve at the top, with a threshold of 1.5 atm, which automatically discharges overpressured chlorine gas, and the outlet of the pressure relief valve can be connected to a gas collection container.

[0035] Reference Figure 2 and Figure 9 The drive structure includes components such as a liquid storage ring 30, nozzle I 32, nozzle II 34, liquid guide pipe I 31, liquid guide pipe II 33, injection pipe 27, drive motor 28, and bevel gear 29. The liquid storage ring 30 rotates on the inner wall of the spray tower 1. Multiple nozzles I 32 are fixed inside the liquid storage ring 30. The number of nozzles I 32 is determined according to the circumference of the liquid storage ring 30 and the spraying requirements, generally 8-16. Two liquid guide pipes I 31 are fixedly connected to both sides at the bottom of the injection pipe 27. The ends of the two liquid guide pipes I 31 that are far apart from each other extend into the liquid storage ring 30 to inject the alkaline solution in the injection pipe 27 into the liquid storage ring 30. Multiple liquid guide pipes II 33 located above the liquid storage ring 30 are fixedly connected to the outer wall of the injection pipe 27. Multiple nozzles II 34 are fixed in pairs at the bottom of the liquid guide pipes II 33, with nozzles I 32 and nozzles II 34 arranged alternately. The nozzles I32 are arranged at an angle upwards, with an inclination angle ranging from 15° to 45°, and are used to spray the alkaline solution at an angle upwards.

[0036] Reference Figure 2 and Figure 9 A drive motor 28 is fixed to the top of the spray tower 1 via a frame. Both the output shaft of the drive motor 28 and the outer wall of the injection pipe 27 are fitted with bevel gears 29. The two bevel gears 29 mesh to drive the injection pipe 27 to rotate. The drive motor 28 is a variable frequency motor.

[0037] After the drive motor 28 starts, it drives the injection pipe 27 to rotate through the meshing of two bevel gears 29. The injection pipe 27 drives the liquid storage ring 30 and the liquid guide pipe II 33 to rotate. The nozzle II 34 sprays the alkali solution downward, and the nozzle I 32 sprays the alkali solution obliquely upward. Because the nozzles I 32 and II 34 are arranged alternately, and the sprayed alkali solution falls under the action of gravity, the alkali solution can be dispersed during the falling process, thereby increasing the contact area between the alkali solution sprayed by the nozzle I 32 and the chlorine gas, and improving the reaction efficiency of chlorine gas and alkali solution.

[0038] Reference Figure 7 , Figure 12 The inner wall of the rotating cylinder 8 is fixed with multiple limiting plates 15 for limiting the movement of the balls 14. The number of limiting plates 15 is the same as the number of inclined grooves 13, which is used to prevent the balls 14 from disengaging from the inclined grooves 13. The inner wall of the rotating cylinder 8 is rotatably connected to multiple guide wheels I 16 via a base. The number of guide wheels I 16 is determined according to the number of ropes I 17, and the guide wheels I 16 cooperate with the adjacent ropes I 17 to guide the ropes I 17, making the ropes I 17 smoother during the pulling process and reducing friction.

[0039] Reference Figure 5 and Figure 6 The inner wall of the air injection pipe 4 is rotatably connected to multiple guide wheels II 25 via a base, and the outer wall of the air injection pipe 4 is rotatably connected to multiple guide wheels III 26 via a base. Both guide wheels III 26 and guide wheels II 25 are located within the fixed cylinder 7. Adjacent guide wheels II 25 and guide wheels III 26 cooperate with corresponding ropes II 24 to guide the ropes II 24, ensuring that the ropes II 24 can accurately and stably transmit force during the pulling of the sealing plug 21.

[0040] In another embodiment: Refer to Figure 2 , Figure 10 and Figure 11 The outer wall of the spray tower 1 is equipped with multiple U-shaped return gas pipes 35. Both ends of the multiple U-shaped return gas pipes 35 are fixedly extended into the spray tower 1, with the two ends located above the liquid guide pipe II 33 and below the conical platform 11, respectively, to reintroduce unreacted chlorine gas from the upper layer to the lower layer for further reaction. A guide fan 36 is rotatably connected to the upper opening of the U-shaped return gas pipe 35 via a frame, used to discharge unreacted chlorine gas from the spray tower 1 into the U-shaped return gas pipe 35. Multiple L-shaped rods 38 are fixed to the outer wall of the injection pipe 27, and the bottom end of each L-shaped rod 38 is fixed with the same rotating ring 39, which rotates on the inner wall of the spray tower 1. Multiple inclined guide plates 40 are fixed to the bottom of the rotating ring 39, and the inclined guide plates 40 rotate to discharge chlorine gas in all directions, facilitating the injection of chlorine gas into the U-shaped return gas pipes 35.

[0041] Reference Figure 10 and Figure 11One end of the rotating shaft of the air guide fan 36 is fixed with a rotating shaft 37, and the other end of the rotating shaft 37 is fixed with a rubber wheel 41. The bottom of the rubber wheel 41 abuts against the top of the rotating ring 39. The rubber wheel 41 can be replaced with a gear, and the top of the rotating ring 39 is provided with a rack that meshes with the gear. When the injection pipe 27 drives the rotating ring 39 and multiple inclined air guide plates 40 to rotate through the L-shaped rod 38, the multiple inclined air guide plates 40 can discharge chlorine gas to all sides, making it easier to inject chlorine gas into the U-shaped return gas pipe 35. In addition, the friction between the rotating ring 39 and the rubber wheel 41 drives the air guide fan 36 to rotate, and re-injects the unreacted chlorine gas in the spray tower 1 into the lower part of the spray tower 1 through the U-shaped return gas pipe 35, so that the chlorine gas can react again, greatly improving the reaction efficiency of chlorine gas, and eliminating the need to use a large number of reaction towers for circulation.

[0042] A method of using a continuous sodium hypochlorite production apparatus: Chlorine gas is injected into a fixed cylinder 7 through an injection pipe 4. The chlorine gas enters a rotating cylinder 8 and is discharged obliquely upward through a chute 9 into a spray tower 1. The inner wall of the chute 9 is arc-shaped, which drives the rotating cylinder 8 to rotate when the chlorine gas is discharged into the spray tower 1, thereby causing the chlorine gas to be evenly discharged in all directions. A conical platform 11 is fixed above the rotating cylinder 8 by a fixed column 10. When the chlorine gas is discharged through the chute 9, the upper layer of chlorine gas is blocked by a baffle 12, causing the upper layer of chlorine gas to flow outward along the plane along the gap between the baffle 12 and the conical platform 11, while the lower layer of chlorine gas is still discharged along the trajectory of the chute 9 into the spray tower 1. This allows the upper and lower layers of chlorine gas to be dispersed and discharged, increasing the chlorine gas concentration. The increased contact area with the alkaline solution improves the chlorine reaction efficiency. When the rotating cylinder 8 rotates under the influence of chlorine gas, the ball bearing 14 moves outward along the trajectory of the inclined groove 13 under centrifugal force. The ball bearing 14 pulls the lifting ring 18 and L-shaped ring 23 upward via rope I 17. The L-shaped ring 23 pulls the sealing plug 21 downward via rope II 24. The centrifugal force on the ball bearing 14 is greater than that of the tension spring 22 and the driving force of the chlorine gas pushing the sealing plug 21 upward (at this time, the tension spring 22 is stretched). The sealing plug 21 seals the fixing ring 19, blocking the injection of chlorine gas, thus allowing the sprayed alkaline solution to fully react with the stratified chlorine gas. When the rotation speed of the rotating cylinder 8 decreases, the centrifugal force of the ball bearing 14 decreases, and the tension of the sealing plug 21 under the tension spring 22... Driven by chlorine gas, the nozzle moves upward again for chlorine injection. This reciprocating operation allows for intermittent chlorine injection, ensuring sufficient reaction and preventing excessive chlorine accumulation that could affect sodium hypochlorite production efficiency. As the chlorine gas rises, the drive motor 28, through the meshing of two bevel gears 29, drives the injection pipe 27 to rotate. The injection pipe 27 then rotates the storage ring 30 and the guide pipe II 33. Nozzle II 34 sprays the alkali solution downwards, while nozzle I 32 sprays it obliquely upwards. The sprayed alkali solution falls under gravity, scattering during its descent, thus increasing the contact area between the alkali solution sprayed by nozzle I 32 and the chlorine gas, improving the reaction efficiency. As the alkali solution reacts with the chlorine gas, sodium hypochlorite solution is produced. Sodium hypochlorite solution and alkali solution are mixed and piled at the bottom of spray tower 1, and discharged into sodium hypochlorite circulation tank through drain pipe 3, which facilitates the reaction with unreacted chlorine gas later. Unreacted chlorine gas in spray tower 1 moves upward, and injection pipe 27 drives rotating ring 39 and multiple inclined guide plates 40 to rotate through L-shaped rod 38. Multiple inclined guide plates 40 can discharge chlorine gas to all sides, which facilitates the injection of chlorine gas into U-shaped return gas pipe 35. In addition, the friction between rotating ring 39 and rubber wheel 41 drives guide fan 36 to rotate, and injects unreacted chlorine gas in spray tower 1 back into the lower part of spray tower 1 through U-shaped return gas pipe 35, so that chlorine gas can react again, which greatly improves the reaction efficiency of chlorine gas and eliminates the need to use a lot of reaction towers for circulation.Unreacted chlorine gas remaining in spray tower 1 is discharged through exhaust pipe 2 to the next stage reaction tower for further reaction.

[0043] As is well known to those skilled in the art, the working principle and electrical connection method of the drive motor 28 are conventional technical means. Given that the above-mentioned technical features are already a regular component of conventional technical solutions in this field, and that their specific implementation can be flexibly selected and configured according to actual application scenarios, they will not be elaborated upon further in this specification. Those skilled in the art can make reasonable selections and implementations based on specific needs and with reference to existing technical specifications.

[0044] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0045] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A continuous sodium hypochlorite production apparatus, comprising a spray tower (1), wherein a gas injection pipe (4) for injecting chlorine gas is fixedly connected through one side of the spray tower (1), an exhaust pipe (2) for discharging unreacted chlorine gas is fixedly connected to the top of the spray tower (1), and a drain pipe (3) for discharging alkaline solution and sodium hypochlorite solution is fixedly connected to the bottom of the spray tower (1). A fixed cylinder (7) and a rotating cylinder (8), wherein the fixed cylinder (7) is disposed inside the spray tower (1), and the rotating cylinder (8) is rotatably connected to the top of the fixed cylinder (7), and the top end of the air injection pipe (4) extends into the fixed cylinder (7), characterized in that, Also includes: The layered exhaust structure includes multiple inclined grooves (9) disposed in the rotating cylinder (8). The inclined grooves (9) are inclined and the inner walls on both sides that are far apart from each other are arc-shaped, which are used to drive the rotating cylinder (8) to rotate when chlorine is discharged. The intermittent exhaust structure includes a fixed ring (19) and a sealing plug (21), wherein the fixed ring (19) is fixed inside the air injection pipe (4), and the sealing plug (21) is used to intermittently seal the fixed ring (19). The injection pipe (27) rotates through the top inner wall of the spray tower (1); Multiple nozzles I (32) and multiple nozzles II (34) are installed inside the spray tower (1); A drive structure for driving the nozzle I (32) and nozzle II (34) to rotate; Chlorine gas is injected into the fixed cylinder (7) through the gas injection pipe (4), enters the rotating cylinder (8), and is discharged obliquely upward through the inclined groove (9). The arc-shaped inner wall of the inclined groove (9) drives the rotating cylinder (8) to rotate, so that the chlorine gas is dispersed and discharged, increasing the contact area with the alkaline solution. At the same time, the intermittent exhaust structure intermittently seals the fixed ring (19) through the sealing plug (21).

2. The sodium hypochlorite continuous production apparatus according to claim 1, characterized in that, The stratified exhaust structure also includes a fixed column (10) and a conical platform (11). The fixed column (10) is fixed inside the fixed cylinder (7) by a horizontal plate. The top of the fixed column (10) rotates through the rotating cylinder (8) and is fixed with the conical platform (11). The bottom of the conical platform (11) is fixed with multiple baffles (12) to block the chlorine gas discharged from the inclined trough (9), so that the upper layer of chlorine gas flows outward along the gap between the baffle (12) and the conical platform (11), and the lower layer of chlorine gas rotates and is discharged along the trajectory of the inclined trough (9), thereby realizing the stratified and dispersed discharge of chlorine gas.

3. A continuous sodium hypochlorite production apparatus according to claim 2, characterized in that, The intermittent exhaust structure also includes multiple slide rods (20), tension springs (22), L-shaped rings (23), lifting rings (18), inclined grooves (13), ball bearings (14), rope I (17), and rope II (24). The slide rods (20) slide through the fixed ring (19), and their top ends are fixedly connected to the bottom of the sealing plug (21). The tension springs (22) are mounted on the slide rods (20) to drive the sealing plug (21) to move upward to release the seal. The L-shaped rings (23) are longitudinally slidably connected to the inner wall of the fixed cylinder (7). The lifting rings (18) are rotatably mounted on the outer wall of the L-shaped rings (23) and are longitudinally slidably connected to the inner wall of the rotating cylinder (8). The inclined grooves (13) are mounted on the inner wall of the rotating cylinder (8). The ball (14) is set in the inclined groove (13). One end of the rope I (17) is fixed to the ball (14), and the other end is fixedly connected to the top of the lifting ring (18). One end of the rope II (24) is fixed to the bottom of the L-shaped ring (23), and the other end extends to the gas injection pipe (4) and is fixedly connected to the bottom of the sealing plug (21). When the rotating cylinder (8) rotates, the ball (14) moves along the inclined groove (13) under the action of centrifugal force. The lifting ring (18) and the L-shaped ring (23) are pulled up by the rope I (17), and the sealing plug (21) is pulled down by the rope II (24) to seal the fixing ring (19). When the rotation speed of the rotating cylinder (8) decreases, the sealing plug (21) moves up under the push of the tension spring (22) and chlorine gas to realize intermittent injection.

4. A continuous sodium hypochlorite production apparatus according to claim 3, characterized in that, The driving structure includes a liquid storage ring (30), a liquid guide pipe I (31) and a liquid guide pipe II (33). The liquid storage ring (30) is rotatably connected to the inner wall of the spray tower (1), and multiple nozzles I (32) are fixed inside the liquid storage ring (30). Two liquid guide pipes I (31) are fixedly connected to the bottom of both sides of the injection pipe (27), and one end of the liquid guide pipe I (31) extends into the liquid storage ring (30). Multiple liquid guide pipes II (33) are fixedly connected to the outer wall of the injection pipe (27), and multiple nozzles II (34) are fixed at the bottom of the liquid guide pipes II (33). The nozzles I (32) and nozzles II (34) are arranged alternately, and the nozzles I (32) are set obliquely upward.

5. A continuous sodium hypochlorite production apparatus according to claim 4, characterized in that, The top of the spray tower (1) is fixed with a drive motor (28). The output shaft of the drive motor (28) and the outer wall of the injection pipe (27) are both fixedly fitted with bevel gears (29). The two bevel gears (29) mesh with each other to drive the injection pipe (27) to rotate.

6. A continuous sodium hypochlorite production apparatus according to claim 5, characterized in that, The inner wall of the rotating cylinder (8) is fixed with multiple limiting plates (15) to prevent the ball (14) from dislodging from the inclined groove (13); the inner wall of the rotating cylinder (8) is rotatably connected with multiple guide wheels I (16) to guide the rope I (17).

7. A continuous sodium hypochlorite production apparatus according to claim 6, characterized in that, The inner wall of the air injection pipe (4) is rotatably connected to multiple guide wheels II (25), and the outer wall of the air injection pipe (4) is rotatably connected to multiple guide wheels III (26). The guide wheels II (25) and III (26) are located inside the fixed cylinder (7) for guiding the rope II (24).

8. A continuous sodium hypochlorite production apparatus according to claim 7, characterized in that, The outer wall of the spray tower (1) is provided with a plurality of U-shaped return gas pipes (35). Both ends of the U-shaped return gas pipes (35) extend into the spray tower (1), with the upper end located above the liquid guide pipe II (33) and the lower end located below the conical platform (11), for introducing the unreacted chlorine gas in the upper layer back into the lower reaction; a gas guide fan (36) is rotatably connected inside the U-shaped return gas pipe (35), for discharging chlorine gas into the U-shaped return gas pipe (35).

9. A continuous sodium hypochlorite production apparatus according to claim 8, characterized in that, The outer wall of the injection pipe (27) is fixed with a plurality of L-shaped rods (38), and the bottom end of the plurality of L-shaped rods (38) is fixed with a rotating ring (39). The rotating ring (39) is rotatably connected to the inner wall of the spray tower (1). The bottom of the rotating ring (39) is fixed with a plurality of inclined air guide plates (40) for discharging chlorine gas to the surrounding area. The rotating shaft of the air guide fan (36) is fixed with a rotating shaft (37). One end of the rotating shaft (37) is fixed with a rubber wheel (41). The bottom of the rubber wheel (41) abuts against the top of the rotating ring (39) for driving the air guide fan (36) to rotate by friction when the rotating ring (39) rotates.

10. A method of using a continuous sodium hypochlorite production apparatus, applied to the continuous sodium hypochlorite production apparatus of claim 9, characterized in that, Includes the following steps: S1. Chlorine injection and uniform distribution: Chlorine is injected into the fixed cylinder (7) through the injection pipe (4), so that the chlorine enters the rotating cylinder (8) and is sprayed out through the inclined groove (9) on its surface; the sprayed chlorine drives the rotating cylinder (8) to rotate, so as to achieve uniform distribution of chlorine in the spray tower (1); S2, Chlorine gas stratification and diversion: The conical platform (11) and baffle (12) located above the inclined trough (9) block the upper layer of chlorine gas, causing it to diffuse along the circumferential plane of the conical platform (11), while the lower layer of chlorine gas maintains rotation and discharge, thereby realizing the stratified diffusion of chlorine gas to increase the contact area with the alkaline solution. S3. Centrifugal Interruption and Intermittent Control: When the rotating cylinder (8) rotates, the ball (14) moves outward along the inclined groove (13) under the action of centrifugal force, pulls the L-shaped ring (23) through rope I (17), and pulls down the sealing plug (21) through rope II (24) to seal the gas path; when the rotation speed decreases, the sealing plug (21) opens again under the action of tension spring (22) and gas pressure to realize the intermittent injection of chlorine gas; S4, Alkali Rotary Spray: The drive motor (28) drives the injection pipe (27) to rotate via the bevel gear (29), so that the liquid storage ring (30), the liquid guide pipe II (33), and the nozzle I (32) and nozzle II (34) rotate together to achieve multi-angle alkali spraying downward and obliquely upward; S5. Recycling of unreacted chlorine: Unreacted chlorine enters the U-shaped return pipe (35) under the guidance of the rotating ring (39) and the inclined gas guide plate (40). At the same time, the rotating ring (39) drives the gas guide fan (36) to re-inject the gas into the bottom of the tower to participate in the reaction. S6. Residual chlorine treatment and sodium hypochlorite collection: The sodium hypochlorite solution generated by the reaction is discharged from the drain pipe (3), and the residual chlorine that cannot be reused is introduced into the next stage reaction tower through the exhaust pipe (2).

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