N-halamine sterilant generator and spray device therefor

Abstract

The present application belongs to the technical field of disinfectant preparation, in particular to a N-halamine sterilization solution generator and a spraying device thereof. The generator comprises a generating cavity and a regeneration cavity. A regeneration liquid is arranged in the regeneration cavity. An N-halamine resin in a hollow metal frame is driven by a switching mechanism to move between the generating cavity and the regeneration cavity. A flow collection cavity and a liquid discharge hole are arranged in the closure disc. The magnetic attraction force of the magnetic block and the iron block is used to automatically open the liquid discharge hole to discharge the residual regeneration liquid during the rising process after resin regeneration, thereby avoiding cross contamination. The spraying device is provided with a piston plate and a conical closure head in the pesticide spraying pipe. When the diaphragm pump stops, the spring III pushes the closure head to block the spray hole, and the U-shaped tube generates reverse suction to prevent residual liquid droplets from leaking. The device can complete resin regeneration without disassembly or additional metering pump, and the filling and spraying process is leak-proof, which is suitable for high-risk environments.

Description

Technical Field

[0001] This invention relates to the field of disinfectant preparation technology, and in particular to an N-haloamine bactericidal liquid generator and its spraying device. Background Technology

[0002] N-haloamine compounds are a class of organic compounds containing nitrogen-halogen covalent bonds. They possess broad-spectrum and highly efficient bactericidal properties and have promising applications in fields such as medical and health care, water treatment, food processing, and public safety. N-haloamine bactericide solutions are typically prepared by reacting resins containing specific functional groups with oxidizing solutions containing halogens.

[0003] The existing equipment for generating N-haloamine bactericidal solutions mainly suffers from the following technical problems: 1. The generation of bactericidal solution and the regeneration of resin often need to be completed in different equipment or containers, or the equipment needs to be disassembled to remove the resin for separate processing. This is cumbersome, inefficient, and increases the risk of operators coming into contact with chemical reagents. 2. Some existing equipment attempts to integrate generation and regeneration functions within the same housing. However, when switching operating states, cross-mixing can easily occur between different liquids (such as bactericidal liquid and regeneration liquid), leading to product contamination or dilution of the regeneration liquid, which affects the purity of the final product and regeneration efficiency. 3. After resin regeneration is completed, the regenerated liquid is likely to remain in the resin filling container or related channels. If it is not discharged in time, it will mix into the product when the bactericidal liquid is generated again, affecting the quality of the bactericidal liquid. 4. For spraying devices for N-halogen amine disinfectant, especially high-voltage electrostatic spraying equipment used in laboratories or contaminated areas, when spraying stops, the pressurized liquid remaining in the nozzle pipeline often forms a dripping phenomenon at the nozzle tip due to the slow release of pressure. If these large droplets contain strong oxidizing substances such as N-halogen amines, they will cause irreversible spot corrosion when they drip onto precision equipment or the ground. 5. In P3 / P4 biosafety laboratories or heavily contaminated areas, operators must wear heavy, multi-layered protective gloves, which restricts hand dexterity. Adding pesticide solutions to the reservoir of spraying equipment using conventional screw caps or funnels is difficult, inefficient, and highly prone to splashing. If N-haloamine solutions splash onto chemical protective suits, they may corrode and penetrate the protective materials, posing a serious safety risk. Summary of the Invention

[0004] The purpose of this invention is to solve the shortcomings of existing resin regeneration methods, such as the need to disassemble or connect an external pump for backwashing, cross-contamination of liquids, and easy leakage during liquid transfer and spraying. The invention proposes an N-haloamine bactericide generator and its spraying device.

[0005] N-haloamine disinfectant generator, including: The housing has a conical plate II fixed inside it, and the housing has a generation chamber and a regeneration chamber arranged vertically through the conical plate II. The regeneration chamber is used to contain the regeneration liquid, and the conical plate II has a central hole. Liquid inlet pipe I is fixed to one side of the housing and connected to the generating chamber for injecting water into the housing; A sealing disk is disposed within the central hole to seal the central hole; A generating mechanism, disposed within the generating chamber, includes a perforated metal frame and N-haloamine resin disposed within the perforated metal frame, the perforated metal frame being fixedly connected to the closed disk; and... A switching mechanism is provided on the housing, including two slide rods and a top plate fixed to the top of the two slide rods. The bottom ends of the two slide rods slide into the housing and are fixedly connected to the top of the hollow metal frame, for driving the hollow metal frame and the N-haloamine resin into the generation chamber and the regeneration chamber respectively. The N-haloamine resin is used to contact the water flowing through it to generate an N-haloamine bactericide solution.

[0006] In one possible design, the generating mechanism further includes a conical plate I fixed within the generating chamber, the perforated metal frame penetrating the conical plate I, and the top diameter of the conical plate I and the conical plate II being larger than their bottom diameter; after water flows into the generating chamber through the inlet pipe I, it converges towards the center under the guidance of the conical plate I and comes into contact with the N-haloamine resin to generate an N-haloamine bactericidal solution, which then flows out from the perforated metal frame and converges towards the center under the action of the conical plate II.

[0007] In one possible design, a drainage mechanism is also included, which comprises: The manifold is located within the enclosed disk; Multiple liquid inlet channels are provided on the outer wall of the closed disk and are connected to the manifold. A drain hole is located at the bottom of the enclosed disc; A sealing plate I is disposed at the bottom of the sealing disk, and a rubber sealing plug I extending into the drain hole is fixed at the top of the sealing plate I; Multiple vertical slots are provided inside the enclosed disk; Multiple sliding rods are slidably connected to multiple vertical slots, and the bottom end of each sliding rod extends slidably to the bottom of the closed disc and is fixedly connected to the top of the closed plate I. Multiple springs II are respectively disposed in multiple vertical grooves. The top end of the spring II is fixedly connected to the outer wall of the sliding rod, and the bottom end of the spring II is fixedly connected to the bottom inner wall of the vertical groove, for applying an upward thrust to the sealing plate I to seal the drain hole; A liquid guide tube is fixedly inserted through the hollow metal frame, with the bottom end of the liquid guide tube fixedly extending into the manifold cavity, and the top end of the liquid guide tube slidingly penetrating through the housing; An iron block is fixed to the bottom of the closed plate I; A horizontal plate is fixed inside the regeneration cavity; A round rod slides vertically through the horizontal plate. A limiting ring is fixedly sleeved on the outer wall of the round rod to limit its downward movement. A counterweight is fixed at the bottom end of the round rod. A magnetic block, fixed to the top of the round rod, is used to generate a magnetic attraction force with the iron block to drive the sealing plate I to move down and release the sealing of the drain hole; The magnetic attraction between the magnetic block and the iron block is greater than the elastic force of the spring II.

[0008] In one possible design, the thickness of the sealing disc is less than the height of the central hole, and the inner wall of the central hole is fixedly fitted with a plurality of rubber sealing rings for cooperating with the sealing disc to increase the sealing performance.

[0009] In one possible design, the switching mechanism further includes a spring I, a base plate, and a pin. The spring I is sleeved on the outer wall of one of the slide rods, and its two ends abut against the bottom of the top plate and the top of the housing, respectively. The base plate is fixed to the top of the housing, and the pin slides through the base plate. Another slide rod has a socket for engaging with the pin to limit the position of the slide rod. The top plate is equipped with a pump body connected to the top of the liquid guide pipe. The outlet end of the pump body is connected to a three-way valve. The first port of the three-way valve is connected to an outlet head through a hose for discharging the sterilizing liquid inside the shell. The second port of the three-way valve is connected to an external recycling tank through a hose. A rubber ring is fixed to the outer wall of the outlet head, and a center plate is fixed inside the outlet head by a crossbar.

[0010] A spraying device for spraying the bactericidal solution generated in the aforementioned N-haloamine bactericidal solution generator, comprising: Barrel body; A diaphragm pump is fixed to the bottom of the tank body via a mounting box, and the inlet end of the diaphragm pump extends into the tank body via a hose; An air supply duct is provided, and the liquid outlet of the diaphragm pump is fixedly connected to the air supply duct via a hose. The spray pipe is fixed to one end of the air supply duct; and, A leak-proof mechanism is installed inside the spray pipe, including a sealing plate II and a fixing plate fixed inside the spray pipe. The fixing plate is located at the outlet end of the spray pipe, and the fixing plate has multiple spray holes.

[0011] In one possible design, the leak-proof mechanism further includes a piston plate I, multiple conical sealing heads, a guide rod, a piston plate II, a fixed cylinder, a spring III, and multiple U-shaped tubes. The piston plate I is sealed and slides within the spray pipe and is located between the sealing plate II and the fixed plate. The multiple conical sealing heads are fixed to the side of the piston plate I near the fixed plate and are used to seal the multiple spray holes. The guide rod is sealed and slides through the sealing plate II. One end of the guide rod is fixedly connected to the piston plate I. The piston plate II is fixed to the other end of the guide rod and is sealed and slides within the spray pipe. The piston plate II is located on the side of the sealing plate II away from the piston plate I. The fixed cylinder is fixed to the side of the sealing plate II near the piston plate II. One end of the guide rod is sealed and slides through the fixed cylinder. The spring III is sleeved on the outer wall of the guide rod and is located... Inside the fixed cylinder, one end of spring III is fixedly connected to the inner wall of the fixed cylinder, and the other end of spring III is fixedly connected to the outer wall of the guide rod, for applying a thrust to the guide rod towards the fixed disc. Multiple U-shaped tubes are fixedly connected to the outer wall of the spray pipe, with the two ends of each U-shaped tube located on opposite sides of piston plate II and piston plate I. When the diaphragm pump is running, the disinfectant is injected through the U-shaped tube between piston plate I and the fixed disc. Piston plate I and the conical sealing head move towards the fixed cylinder and compress spring III, causing the disinfectant to be sprayed through the spray hole. When the diaphragm pump stops, spring III drives piston plate I and the conical sealing head to close the spray hole and moves piston plate II, drawing back the disinfectant between piston plate I and the fixed disc through the U-shaped tube.

[0012] In one possible design, the outer wall of the spray pipe is provided with a through hole, which is located between the piston plate I and the fixed plate.

[0013] In one possible design, an impeller rotates within the air supply duct via a mounting bracket, the mounting bracket contains a motor for driving the impeller to rotate, and the air supply duct contains a high-voltage electrostatic generator for causing the bactericidal liquid blown out by the impeller to carry static electricity.

[0014] In one possible design, the top of the barrel has a liquid inlet hole, and a U-shaped plate is fixed to the inner wall of the top of the barrel. A vertical rod slides through the U-shaped plate, and the top of the vertical rod passes through the liquid inlet hole. A sealing plate III located inside the barrel is fixedly sleeved on the outer wall of the vertical rod. A rubber sealing plug II extending to the liquid inlet hole is fixed to the top of the sealing plate III. A spring IV is fixed between the bottom of the sealing plate III and the bottom inner wall of the U-shaped plate through a spring seat. The spring IV is sleeved on the outer wall of the vertical rod. A corrugated bellows cover for protecting the spring IV is fixed between the sealing plate III and the U-shaped plate. A fixing ring is fixed to the top of the barrel. The liquid outlet head is clearance-fitted with the fixing ring. The fixing ring is coaxial with the liquid inlet hole. The vertical rod abuts against the center plate. When the liquid outlet head is inserted into the fixing ring, the center plate pushes the vertical rod down and compresses the spring IV, causing the sealing plate III and the rubber sealing plug II to move down and release the seal on the liquid inlet hole.

[0015] Beneficial effects: In this invention, by setting a generation chamber and a regeneration chamber separated by a conical plate II inside the shell, and equipping them with a switching mechanism consisting of a slide bar, a top plate and a hollow metal frame, the function of continuous generation of N-haloamine bactericidal solution and in-situ regeneration of resin within the same equipment is realized. The resin can restore its activity after processing high-concentration regeneration solution without disassembly, which significantly simplifies the operation process, reduces the risk of operators coming into contact with chemical reagents, and improves equipment utilization and production efficiency. In this invention, by setting a manifold, inlet channel, and outlet hole in the closed plate, and cooperating with a drainage mechanism composed of spring II, magnetic block, iron block and counterweight, the automatic collection and discharge of residual regenerated liquid during the lifting process after resin regeneration is realized. By using the timing coordination of magnetic force and spring force, the outlet hole is automatically opened at a specific position to discharge waste liquid, and automatically closed after being emptied, ensuring reliable isolation between the generation chamber and the regeneration chamber, effectively avoiding cross-contamination between the two liquids, and ensuring the purity of the bactericidal liquid and the stability of the concentration of the regenerated liquid. In this invention, a leak-proof mechanism is installed inside the spray pipe of the spraying device, comprising a piston plate I, a conical sealing head, a guide rod, a piston plate II, a spring III, and a U-shaped tube. When the diaphragm pump stops working, the spring force drives the conical sealing head to physically seal the spray hole. At the same time, the movement of the piston plate II generates negative pressure, which draws back the residual liquid at the spray hole through the U-shaped tube. This completely solves the problem of drooling caused by residual pressure in traditional spray heads and prevents large droplets of highly corrosive N-haloamine liquid from causing irreversible spot corrosion to the equipment and the ground. In this invention, a self-sealing filling interface, including a vertical rod, a sealing plate III, a spring IV, and a fixing ring, is provided on the top of the spraying device's barrel. This interface works in conjunction with the generator's liquid outlet. During filling, simply inserting the liquid outlet into the fixing ring causes the central plate to automatically open the seal of the liquid inlet. Simultaneously, the rubber ring forms an external seal. After filling, pulling out the liquid outlet automatically closes the liquid inlet. This allows operators to complete the liquid filling process quickly and leak-free with one hand, even while wearing heavy protective gloves. This significantly improves operational efficiency and safety in high-risk environments such as P3 / P4 laboratories, completely avoiding the fatal risk of chemical protective clothing being corroded and penetrated by liquid splashing.

[0016] This invention effectively solves the core problems of existing technologies, such as cumbersome operation of bactericide generation and resin regeneration, cross-contamination of liquids, leakage at the spray terminal, and difficulty and danger in filling in high-risk environments, through integrated cavity design, reliable liquid path isolation and automatic residue discharge mechanism, anti-drip spraying mechanism, and convenient and safe capless filling interface. The equipment is compact, easy to operate, reliably sealed, and safe to use, significantly improving the automation level, operational safety, and final product quality of N-haloamine bactericide preparation and use. It is particularly suitable for biosafety laboratories and medical and health facilities with extremely high safety and reliability requirements. Attached Figure Description

[0017] Figure 1 A three-dimensional structural schematic diagram of the N-haloamine bactericidal liquid generator provided by the present invention; Figure 2 This is a cross-sectional structural schematic diagram of the N-haloamine bactericidal liquid generator provided by the present invention; Figure 3 A three-dimensional cross-sectional view of the hollow metal frame and closed disk of the N-haloamine bactericidal liquid generator provided by the present invention; Figure 4 for Figure 3 Enlarged structural diagram at point A; Figure 5 This is a three-dimensional structural diagram of the slide bar and liquid guide tube of the N-haloamine bactericidal liquid generator provided by the present invention; Figure 6 This is a three-dimensional exploded view of the liquid outlet head, rubber ring, and central plate of the N-haloamine bactericidal liquid generator provided by the present invention. Figure 7 This is a three-dimensional structural schematic diagram of a spraying device provided by the present invention; Figure 8 A three-dimensional exploded structural diagram of the barrel and diaphragm pump of a spraying device provided by the present invention; Figure 9 A three-dimensional cross-sectional view of the air supply tube and spray pipe of a spraying device provided by the present invention; Figure 10 A cross-sectional view of the spray pipe and fixing plate of a spraying device provided by the present invention; Figure 11 This is a partial three-dimensional cross-sectional view of the sealing plate III, the fixing ring, and the barrel of a spraying device provided by the present invention. Figure 12 The bactericidal rate of N-haloamine bactericidal resin PDCl; Figure 13 Plate graph showing the bactericidal effects of N-haloamine bactericidal resin and recycled chlorinated resin on Staphylococcus epidermidis.

[0018] In the diagram: 1. Shell; 2. Inlet pipe I; 3. Filter; 4. Conical plate I; 5. Perforated metal frame; 6. Resin; 7. Slide rod; 8. Top plate; 9. Spring I; 10. Base plate; 11. Pin; 12. Insertion hole; 13. Guide pipe; 14. Three-way valve; 15. Outlet head; 16. Rubber ring; 17. Center plate; 18. Conical plate II; 19. Center hole; 20. Sealing plate; 21. Rubber sealing ring; 22. Inlet channel; 23. Manifold; 24. Drain hole; 25. Rubber sealing plug I; 26. Sealing plate I; 27. Vertical groove; 28. 29. Sliding rod; 30. Spring II; 31. Iron block; 32. Magnetic block; 33. Barrel body; 34. Diaphragm pump; 35. Air supply tube; 36. Impeller; 37. Spraying pipe; 38. Fixed plate; 39. Spray hole; 40. Sealing plate II; 41. Guide rod; 42. Piston plate I; 43. Conical sealing head; 44. Fixed cylinder; 45. Spring III; 46. Piston plate II; 47. Through hole; 48. U-shaped tube; 49. U-shaped plate; 50. Vertical rod; 51. Sealing plate III; 52. Rubber sealing plug II; 53. Spring IV; 54. Corrugated bellows cover; 55. Fixing ring. Detailed Implementation

[0019] 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.

[0020] In one embodiment: Refer to Figure 1 and Figure 2The N-haloamine disinfectant generator relates to the field of disinfectant preparation technology. It mainly includes a housing 1, which houses and supports all components of the generator. The housing 1 can be cylindrical and made of corrosion-resistant polyvinyl chloride or polypropylene plastic to adapt to the chemical environment of the N-haloamine disinfectant and regenerated solution. An inlet pipe I2 is fixed to one side of the housing 1, injecting clean water into the housing 1. A filter 3 is fixedly connected to the end of the inlet pipe I2 away from the housing 1. The filter 3 filters the water flow, removing suspended particles, sediment, and other impurities to prevent contamination of the N-haloamine resin or blockage of the flow channel. The inlet end of the filter 3 is connected to an external water pump, which provides water pressure to deliver clean water into the housing 1.

[0021] Reference Figure 1 and Figure 2 A conical plate II18 is fixed inside the shell 1. The top diameter of the conical plate II18 is larger than the bottom diameter, forming a funnel-shaped structure that is larger at the top and smaller at the bottom. The outer edge of the conical plate II18 is sealed and fixedly connected to the inner wall of the shell 1. The shell 1 forms a generation chamber and a regeneration chamber arranged vertically through the conical plate II18. The generation chamber is located in the space above the conical plate II18, and the regeneration chamber is located in the space below the conical plate II18. The regeneration chamber contains a regeneration liquid, which is usually an aqueous solution containing free halogens, such as sodium hypochlorite solution or sodium hypobromite solution, used to replenish and regenerate the inactive N-haloamine resin. The shell 1 has an inlet end and an outlet end, both of which are connected to the regeneration chamber. These two ports are used to replenish fresh regeneration liquid into the regeneration chamber or to discharge ineffective regeneration liquid. Specifically, this can be achieved by opening a pipe with a valve on the side wall of the shell 1. The inlet pipe I2 is connected to the generation chamber, that is, clean water flows directly into the generation chamber.

[0022] Reference Figure 2 , Figure 3 and Figure 5The housing 1 is equipped with a switching mechanism for driving the hollow metal frame 5 and resin 6 into the generation chamber and regeneration chamber respectively. The switching mechanism can lift or lower the hollow metal frame 5 as a whole, allowing it to carry the resin 6 between the generation chamber and the regeneration chamber. The switching mechanism includes two slide rods 7 and a top plate 8 fixed to the top of the two slide rods 7. The two slide rods 7 are arranged vertically and parallel, with their bottom ends passing through a sealed sliding bearing at the top of the housing 1 and entering the interior of the housing 1, where they are fixedly connected to the top of the hollow metal frame 5. The top plate 8 is connected to the top of the two slide rods 7 and is used to simultaneously operate the two slide rods 7 to move up and down synchronously. The operator can manually control the position of the hollow metal frame 5 by pressing or pulling the top plate 8. A sealing flange is fixed to the top of the housing 1. The sealing flange integrates at least one lip seal and one dust scraper ring. The bottom ends of the two slide rods slid through the sealing flange and extend into the housing 1. The sealing flange is used to prevent external contaminants from entering the housing 1 and to prevent gas leakage from the housing 1. The exterior of the housing 1 is also provided with a retractable corrugated protective cover. The top end of the corrugated protective cover is sealed to the top plate 8, and the bottom end is sealed to the top of the housing 1. It completely covers the two slide rods 7 and the spring I 9 to prevent pollutants from adhering to the surface of the slide rods 7 in a polluted environment.

[0023] Reference Figure 2 and Figure 3 The conical plate II18 has a circular through hole, namely the central hole 19, at its center. A sealing disc 20 is provided inside the central hole 19 for sealing it. The diameter of the sealing disc 20 matches the inner diameter of the central hole 19 and can slide up and down inside the central hole 19 to open or close the central hole 19. The generating chamber is provided with a generating mechanism for generating N-halogen amine bactericidal liquid. The generating mechanism includes a hollow metal frame 5 and resin 6, and the resin 6 is N-halogen amine resin. The hollow metal frame 5 is a basket-shaped container made of corrosion-resistant metal wire mesh. Its mesh size is smaller than the particle diameter of the resin 6, which can accommodate the resin 6 and allow the liquid to enter and exit freely. The resin 6 is filled in the hollow metal frame 5 and is itself a polymer resin bead loaded with N-halogen amine functional groups.

[0024] Reference Figures 2-4The generating mechanism also includes a conical plate I4 fixed inside the generating chamber. The conical plate I4 is also a funnel-shaped structure with a top diameter larger than the bottom diameter. Its outer edge is sealed and fixedly connected to the inner wall of the shell 1. It is located above the conical plate II18. A hollow metal frame 5 passes through the conical plate I4. The center of the conical plate I4 also has an opening. The upper middle part of the hollow metal frame 5 passes through the opening, and the bottom of the hollow metal frame 5 is fixedly connected to the closed plate 20. The hollow metal frame 5 is fixed to the top of the closed plate 20 to form an integrated structure. The resin 6 is placed inside the hollow metal frame 5. The top diameter of the conical plate I4 and the conical plate II18 is larger than the bottom diameter. Through the conical plate I4, the water flowing into the generating chamber can converge to the middle and fully contact the resin 6 to generate N-haloamine bactericidal solution.

[0025] Specifically, clean water is injected into the housing 1 through the inlet pipe I2. Under the action of gravity, the water falls onto the upper surface of the conical plate I4. As the conical plate I4 contracts and tilts downward, the water slides down its surface towards the center, converges, and flows precisely to and through the hollow metal frame 5. When the water flows through the hollow metal frame 5, it comes into full contact with the resin 6 inside the frame. The N-haloamine groups on the resin 6 exchange or react with the halogen ions in the water, turning the water into a bactericidal solution containing N-haloamine components. The produced N-haloamine bactericidal solution flows out from the bottom of the hollow metal frame 5 and falls onto the conical plate II18 below. The conical plate II18 also converges the bactericidal solution towards the center, causing it to flow towards the central hole 19 area, which facilitates the later centralized discharge of the N-haloamine bactericidal solution through the drainage mechanism set at the central hole 19.

[0026] Reference Figures 2-4 To prevent cross-contamination between the two liquids when switching working chambers, a drainage mechanism is further provided. The sealed disc 20 has a manifold 23, which is a cavity located inside the sealed disc 20. The outer wall of the sealed disc 20 has multiple inlet channels 22, which are radial channels penetrating the outer wall of the sealed disc 20. One end of each channel opens onto the outer circumferential surface of the sealed disc 20, and the other end connects to the manifold 23. When the sealed disc 20 closes the central hole 19, the bactericidal liquid collected at the bottom center of the conical plate II 18 can flow into the manifold through these inlet channels 22. Inside cavity 23, the bottom of the sealing plate 20 is provided with a drain hole 24, which connects the manifold 23 with the space below the sealing plate 20. The bottom of the sealing plate 20 is provided with a sealing plate I 26 for sealing the drain hole 24. The sealing plate I 26 is a circular or square plate whose area covers the drain hole 24. The top of the sealing plate I 26 is fixed with a rubber sealing plug I 25 extending into the drain hole 24. The shape of the rubber sealing plug I 25 matches the shape of the inner wall of the drain hole 24, such as a frustum cone or a cylinder, for sealing the drain hole 24.

[0027] Reference Figures 2-4The sealed disk 20 has multiple vertical grooves 27, which are cylindrical or rectangular grooves located inside the sealed disk 20 and opened vertically. Each vertical groove 27 has a sliding rod 28 slidably connected to it, which can slide freely up and down within the groove. The bottom ends of the sliding rods 28 extend to the bottom of the sealed disk 20 and are fixedly connected to the top of the sealing plate I 26. In this way, the sealing plate I 26 can move up and down relative to the sealed disk 20. Each vertical groove 27 has multiple springs II 29. The top end of the springs II 29 is fixedly connected to the outer wall of the sliding rod 28 through a spring seat, and the bottom end of the springs II 29 is fixedly connected to the bottom inner wall of the vertical groove 27 through a spring seat. The springs II 29 are always in a compressed state, applying an upward thrust to the sliding rod 28. This, in turn, applies an upward pushing force to the sealing plate I 26 and the rubber sealing plug I 25 through the sliding rod 28, causing the rubber sealing plug I 25 to press tightly against the sealing surface of the drain hole 24, thus sealing the drain hole 24. The inner walls of the sliding rod 28 and the vertical groove 27 are coated with a polytetrafluoroethylene lubricating coating to achieve a low-friction, non-jamming sliding fit in corrosive liquid environments.

[0028] Reference Figures 2-4 A liquid guide tube 13 is fixedly inserted through the hollow metal frame 5. The liquid guide tube 13 is a slender rigid pipe. The top end of the liquid guide tube 13 extends upward from the top of the hollow metal frame 5, passes through the sealed sliding pipe joint at the top of the housing 1, and finally connects to the external pump body. The bottom end of the liquid guide tube 13 extends downward, passes through the bottom of the hollow metal frame 5, and extends into the manifold 23. In this way, the liquid in the manifold 23 can be drawn out through the liquid guide tube 13. An iron block 30 is fixed at the bottom of the sealing plate I 26. The iron block 30 is a pure iron or low carbon steel product that can be attracted by a magnet. A horizontal plate is fixed inside the regeneration chamber. The horizontal plate is horizontally fixed on the inner wall of the housing 1 and is located in a lower position inside the regeneration chamber. A round rod slides vertically through the horizontal plate. The round rod can slide up and down relative to the horizontal plate. A limiting ring is fixedly fitted on the outer wall of the device. The limiting ring is located below the horizontal plate. The outer diameter of the limiting ring is larger than the diameter of the through hole on the horizontal plate through which the round rod passes. It is used to limit the downward movement of the round rod and prevent the round rod from falling off the top of the horizontal plate. A counterweight is fixed at the bottom of the round rod. The counterweight is a metal block with a certain mass. The counterweight cooperates with the horizontal plate to limit the magnetic block 31. A magnetic block 31 is fixed at the top of the round rod. The magnetic block 31 is a permanent magnet. A magnetic attraction force is generated between the magnetic block 31 and the iron block 30. This magnetic attraction force is used to overcome the elastic force of the spring II 29 and drive the rubber sealing plug I 25 and the sealing plate I 26 to move downward, thereby releasing the closure of the drain hole 24. In the design, it is necessary to ensure that the magnetic attraction force between the magnetic block 31 and the iron block 30 is greater than the elastic force of the spring II 29.

[0029] Specifically, when water flows into the generating chamber and generates N-haloamine bactericidal solution through resin 6, the bactericidal solution converges towards the center under the action of conical plate II 18 and enters the manifold 23 through the inlet channel 22. At this time, an external water pump (connected to the top of the guide pipe 13) operates, drawing out the bactericidal solution in the manifold 23 through the guide pipe 13 and sending it to a subsequent use or storage device. When resin 6 needs to be regenerated after a period of use, the bactericidal solution above conical plate II 18 must first be drained. This can be done by continuing to draw water through the guide pipe 13 until the liquid level is lower than the inlet channel 22. Then, the operator moves the hollow metal frame 5 down through the switching mechanism. The hollow metal frame 5 moves the closed plate 20 and the iron block 30 together. As the iron block 30 descends, it gradually approaches the magnetic block 31. When the hollow metal frame 5 continues to descend and is completely submerged in the regeneration liquid of the regeneration chamber, the distance between the iron block 30 and the magnetic block 31 is extremely close, and the magnetic attraction between them reaches its maximum. However, at this time, the sealing plate 20 also descends and leaves the central hole 19. Therefore, the bactericidal liquid above and the regeneration liquid below lose the obstruction of the sealing plate 20. However, since the bactericidal liquid above has been drained before the descent, and the small amount of mixing that may occur between the two at the moment the sealing plate 20 descends will be dealt with in the subsequent residual discharge process of this invention. During the regeneration process of the resin 6, the resin 6 is soaked in the regeneration liquid for a certain period of time to complete the replenishment of halogens. After regeneration is complete, the switching mechanism begins to lift the hollow metal frame 5. As the hollow metal frame 5 rises, the iron block 30 also rises. At this time, because the magnetic block 31 is confined within the regeneration cavity by the round rod, counterweight, and horizontal plate, the magnetic attraction between the iron block 30 and the magnetic block 31 drags the round rod and the magnetic block 31 upwards together until the limiting ring on the round rod abuts against the bottom surface of the horizontal plate, preventing the round rod from moving further upwards. At this point, the magnetic block 31 is confined to its highest position. When the closed disk 20 re-enters the central hole 19 during the upward process, the iron block 30 continues to rise, while the magnetic block 31, being confined, cannot continue to rise. Therefore, the distance between the iron block 30 and the magnetic block 31 begins to increase. At this time, because the iron block 30 is still within the magnetic attraction range of the magnetic block 31... The magnetic attraction still exists, but its direction is to try to pull the iron block 30 downwards. However, the rise of the sealing disk 20 is forced by the slide rod 7 driving the hollow metal frame 5. Therefore, when the sealing disk 20 rises and the distance between the iron block 30 and the magnetic block 31 increases to a certain extent, the magnetic attraction will overcome the elastic force of the spring II 29 and the gravity of the sealing plate I 26, causing the iron block 30 to move downwards relative to the sealing disk 20. The downward movement of the iron block 30 causes the sealing plate I 26 and the rubber sealing plug I 25 to move downwards, thereby releasing the seal on the drain hole 24. At this time, since the sealing disk 20 has resealed the central hole 19, and the upper part of the sealing disk 20 is the internal space of the generating cavity, while the lower part is the regeneration cavity, the hollow metal frame 5 moves downwards from the regeneration cavity. During the process of being lifted in the liquid, its outer surface and the inside of the hollow metal frame 5 will carry some regenerated liquid. When the sealing plate 20 closes the central hole 19, this residual regenerated liquid, as well as the regenerated liquid that may drip from the hollow metal frame 5, will collect on the conical plate II 18 and flow back into the manifold 23 through the liquid inlet channel 22. Since the drain hole 24 has been opened at this time, this regenerated liquid will be discharged downward through the drain hole 24 and flow back to the bottom of the regeneration chamber. After the regenerated liquid in the manifold 23 is emptied, the hollow metal frame 5 and the sealing plate 20 continue to move upward. At this time, since the sliding rod 28 has a limited stroke in the vertical groove 27, when the sealing plate 20 moves up to a certain height, the top of the sliding rod 28 will contact the top inner wall of the vertical groove 27, so that the sealing plate I When block 26 can no longer move downwards relative to the sealing plate 20, the entire sealing plate 20 will move the iron block 30 upwards. After moving upwards, the iron block 30 will quickly move away from the magnetic block 31, and the magnetic attraction between the two will drop sharply to less than the elastic force of spring II 29. Therefore, spring II 29 will push the sliding rod 28 upwards, causing the sealing plate I 26 and the rubber sealing plug I 25 to reseal the drain hole 24. At this time, the sealing plate 20 is still located inside the central hole 19 and remains closed to the central hole 19. Thus, the residual liquid after regeneration is successfully discharged, and the drain hole 24 is closed again, preparing for the next generation of disinfectant. This draining mechanism has a compact structure, requires no external power, and automatically completes the residual discharge and sealing actions by utilizing the timing coordination of magnetic force and spring force.This avoids contamination of the subsequently generated disinfectant solution with the regenerated solution.

[0030] To ensure the reliability of the opening of the drain hole 24, the fit between the limiting ring and the horizontal plate should ensure that after the sealing plate 20 completely closes the central hole 19, the sealing plate 20 continues to rise a short, preset stroke S. This stroke S is sufficient to completely overcome the spring force of the spring II 29 by ensuring that the magnetic attraction between the iron block 30 and the magnetic block 31 is sufficient. By rationally designing the stiffness of the spring II 29, the magnetic force of the magnetic block 31, and the preset stroke S, it can be ensured that the drain hole 24 is forcibly opened after the sealing plate 20 closes the central hole 19. Those skilled in the art can determine the preferred range of the above parameters through a limited number of experiments.

[0031] Reference Figures 2-4 To ensure the reliability of the above process, the thickness of the sealing disk 20 is less than the height of the central hole 19. This provides the sealing disk 20 with a travel space within the central hole 19. When the bottom of the sealing disk 20 is flush with the bottom of the central hole 19, the gap between the iron block 30 and the magnetic block 31 is minimal, and the magnetic attraction is maximum, sufficient to move the round rod upward to the highest point, where it is lowered by the counterweight and the horizontal plate. Then, after the sealing disk 20 moves upward a certain distance, the iron block 30 moves downward relative to the magnetic block 31, releasing the seal on the drain hole 24. After the regenerated liquid in the manifold 23 is drained, the sealing disk 20 continues to... As the slide bar 28 continues to move upward, its sliding distance within the vertical groove 27 is limited. The sealing disc 20 then moves the iron block 30 upward, releasing the magnetic attraction between the iron block 30 and the magnetic block 31. Under the action of the spring 29, the iron block 30 re-closes the drain hole 24. At this time, the sealing disc 20 remains within the central hole 19, sealing it. To enhance the sealing effect, multiple rubber sealing rings 21 are fixedly embedded in the inner wall of the central hole 19. The rubber sealing rings 21 can be O-rings, forming multiple seals with the outer wall of the sealing disc 20, increasing the sealing performance between the central hole 19 and the sealing disc 20, and preventing liquid leakage.

[0032] Reference Figure 2 , Figure 5 , Figure 6 and Figure 11The bottom ends of both slide rods 7 extend into the housing 1 and are fixedly connected to the top of the hollow metal frame 5. A spring I9 is ​​fixed between the bottom of the top plate 8 and the top of the housing 1 via a spring seat. The spring I9 is ​​sleeved on the outer wall of one of the slide rods 7. The spring I9 is ​​in a compressed state, and its elastic force is upward, always applying an upward thrust to the top plate 8. This ensures that, in its natural state, the hollow metal frame 5 and the closed plate 20 are in the highest position, i.e., inside the regeneration cavity. This prevents resin 6 from falling into the regeneration cavity due to accidental operation. A base plate 10 is fixed to the top of the housing 1, and a pin 11 slides through the base plate 10. Another slide bar 7 has an insertion hole 12, which cooperates with the pin 11. When the operator overcomes the elastic force of the spring I9 and presses the top plate 8 downward, causing the hollow metal frame 5 to move into the regeneration chamber, the pin 11 can be inserted into the insertion hole 12 to lock the position of the slide bar 7, keeping the resin 6 immersed in the regeneration liquid. When the sealing plate 20 moves to the highest point, the iron block 30 and the magnetic block 31 disengage, and the sealing plate 20 is still closed to the center hole 19. At this time, the pin 11 can be inserted into the insertion hole 12 to limit the slide bar 7 and prevent it from springing upward under the action of the spring I9. The top plate 8 is equipped with a liquid guide tube. The pump body, connected to the top of the 13th section, can be a small diaphragm pump or a peristaltic pump. A three-way valve 14 is connected to the outlet end of the pump body. The three-way valve 14 is a manual or electric directional valve with three ports. One port of the three-way valve 14 is connected to an outlet head 15 via a hose. This port is used to discharge the sterilizing solution generated inside the housing 1 to an external container. The other port of the three-way valve 14 is connected to an external recycling tank via a hose. This port is used to discharge waste liquid during cleaning operations. After the resin 6 moves from the regeneration chamber to the generation chamber, the resin 6 needs to be rinsed before generating the sterilizing solution to remove residual regeneration fluid from its surface. At this time, clean water is injected into the generating chamber through the liquid inlet pipe I2 to clean the resin 6. After cleaning, the three-way valve 14 is switched to the port connected to the recovery tank, the pump runs, and the waste liquid generated during cleaning is extracted and discharged into the recovery tank. After that, the three-way valve 14 is switched to the outlet head 15 port, and normal sterilization liquid output can be carried out. A rubber ring 16 is fixed on the outer wall of the outlet head 15. The rubber ring 16 is used to form a seal with the fixing ring 54 on the barrel 32 of the subsequent spraying device. A center plate 17 is fixed inside the outlet head 15 by a crossbar. The center plate 17 is used to push the vertical rod 49 on the spraying device during liquid injection.

[0033] It also includes a controller, which is a PLC programmable logic controller or a microcontroller. The controller is electrically connected to the control terminals of the pump body, diaphragm pump 33, motor driving impeller 35, high-voltage electrostatic generator, and three-way valve 14. The controller is configured to: control the pump body to start when the system is in generating mode, and control the three-way valve 14 to switch to the port connected to the liquid outlet 15; control the three-way valve 14 to switch to the port connected to the recovery tank when the system is in cleaning mode; when the spraying device is started, the controller synchronously controls the diaphragm pump 33 and motor to start, and delays or synchronously starts the high-voltage electrostatic generator; when the spraying device is stopped, the controller controls the diaphragm pump 33 and motor to stop simultaneously.

[0034] Working principle of N-haloamine bactericidal solution generator: S1. In the initial state, the spring I9 in the switching mechanism is in a naturally extended or pre-compressed state. Its elastic force acts on the hollow metal frame 5 through the top plate 8 and the two slide rods 7, so that the hollow metal frame 5 is located at the highest position of the generating cavity inside the shell 1. The closed plate 20 fixed to the bottom of the hollow metal frame 5 is embedded in the central hole 19. The outer wall of the closed plate 20 is tightly fitted with the multiple rubber sealing rings 21 embedded in the inner wall of the central hole 19, realizing the isolation between the generating cavity and the regeneration cavity. At the same time, the multiple springs II 29 in the draining mechanism are in a compressed state. The elastic force of the springs II 29 is transmitted to the closed plate I 26 through the slide rod 28, so that the rubber sealing plug I 25 at the top of the closed plate I 26 presses upward against the inner wall of the drain hole 24, and the drain hole 24 is in a closed state. There is a certain distance between the iron block 30 at the bottom of the closed plate I 26 and the magnetic block 31 at the top of the round rod in the regeneration cavity, and the magnetic attraction force does not play a role. S2. When clean water is injected into the generating chamber, an external water pump sends clean water into the filter 3. After the filter 3 removes suspended particles from the water, the clean water enters the generating chamber inside the shell 1 through the inlet pipe I2. The clean water first falls on the upper surface of the conical plate I4. The conical plate I4 is funnel-shaped with a larger top and a smaller bottom. Its inclined inner wall guides the clean water to converge towards the central area of ​​the conical plate I4. The water then passes through the side wall of the hollow metal frame 5 fixed in the center of the conical plate I4 and comes into full contact with the N-haloamine resin filled inside the hollow metal frame 5. When the water passes through the hollow metal frame 5, it comes into full contact with the N-haloamine resin inside the frame. The N-haloamine functional groups on the resin undergo a hydrolysis reaction, slowly releasing free active halogens with strong oxidizing properties (such as hypochlorous acid) into the water, or releasing N-haloamine molecules containing active halogens, thereby converting the water into a solution with bactericidal effect. S3. The generated disinfectant flows out from the bottom of the hollow metal frame 5 under the action of gravity and falls onto the upper surface of the cone-shaped plate II 18 below. The cone-shaped plate II 18 is also funnel-shaped, wider at the top and narrower at the bottom. Its inclined inner wall guides the disinfectant towards the central area of ​​the cone-shaped plate II 18, that is, the position of the central hole 19. Since the sealing plate 20 seals the central hole 19, the disinfectant cannot flow downward into the regeneration chamber. Instead, it flows into the confluence chamber 23 inside the sealing plate 20 through multiple liquid inlet channels 22 opened on the outer wall of the sealing plate 20. At this time, it flows into the confluence chamber 23 inside the sealing plate 20. When the pump body is connected to the end, it starts to run. The bottom end of the liquid guide pipe 13 is fixedly extended into the manifold 23. The pump body draws out the bactericidal liquid collected in the manifold 23 through the liquid guide pipe 13. The three-way valve 14 at the outlet end of the pump body is switched to the port connected to the outlet head 15. The bactericidal liquid is transported to an external storage container or directly supplied to the spraying device through the outlet head 15. In this state, the inlet flow rate of the external water pump and the pumping flow rate of the pump body are kept in dynamic balance. The bactericidal liquid is continuously generated and output. The drain hole 24 is kept closed, and there is no liquid leakage or cross-contamination. S4. When the bactericidal efficacy of resin 6 decreases and regeneration is required, first stop the external water pump and the pump body connected to the liquid guide pipe 13. Evacuate the residual bactericidal liquid in the generation chamber through the liquid guide pipe 13 until the liquid level on the upper surface of the conical plate II 18 is lower than the height of the inlet channel 22. The operator manually overcomes the elastic force of spring I 9 and presses down on the top plate 8 of the switching mechanism. The top plate 8 drives the two sliding rods 7 to slide downwards synchronously. The sliding rods 7 push the hollow metal frame 5 downwards, and the closed plate 20 fixed to the bottom of the hollow metal frame 5 moves downwards accordingly. First, it disengages from the central hole 19, and the generation chamber and regeneration chamber are connected through the central hole 19. The hollow metal frame 5 continues to descend until it is completely immersed in the pre-stored regeneration liquid in the regeneration chamber. The regeneration liquid contains free halogens. An aqueous solution is used to ensure that the resin 6 is completely immersed. As the perforated metal frame 5 descends, the iron block 30 at the bottom of the closed plate I26 descends along with it, gradually approaching the magnetic block 31 fixed to the top of the round rod. When the perforated metal frame 5 descends to its lowest position, the distance between the iron block 30 and the magnetic block 31 reaches its minimum value, and the magnetic attraction between them reaches its maximum value, keeping the perforated metal frame 5 and the resin 6 inside immersed in the regeneration solution. During the set immersion time, the active halogens in the regeneration solution (such as sodium hypochlorite or other solutions containing active free halogens) undergo a rehalogenation reaction with the nitrogen-hydrogen bonds (NH bonds) left on the resin 6 after consumption, generating new nitrogen-halogen bonds (NX bonds), replenishing the active halogens, and restoring the bactericidal activity of the resin 6. After S5 and resin 6 are regenerated, the pressure on the top plate 8 is released, and the spring I9, which is in a compressed state, releases its elastic force, pushing the top plate 8 to move upward. The top plate 8 drives the hollow metal frame 5 to rise upward through the two sliding rods 7. In the initial stage of lifting, the resin 6 carried by the hollow metal frame 5 and the outer surface of the hollow metal frame 5 are covered with residual regeneration liquid. During the rise of the hollow metal frame 5, the closed plate 20 and the iron block 30 at its bottom rise synchronously. Since the round rod in the regeneration chamber cooperates with the horizontal plate through the limiting ring on its outer wall, and the bottom end of the round rod is fixed with a counterweight, the upward stroke of the round rod and the magnetic block 31 is restricted. When the iron block 30 rises to a certain height, the magnetic attraction between the iron block 30 and the magnetic block 31 overcomes the elastic force of the spring II 29, causing the iron block 30 to move downward relative to the closed plate 20. The movement of the iron block 30 drives the closed plate I 26 and the rubber sealing plug I 25 to move downward over the elastic force of the spring II 29. The rubber sealing plug I 25 disengages from the drain hole 24, and the drain hole 24 is opened. S6. When the closed disc 20 re-embeds into the central hole 19 during its continued ascent, the closed disc 20 isolates the generating chamber from the regeneration chamber again. At this time, the residual regeneration liquid dripping from the surface of the hollow metal frame 5 and resin 6 is collected by the conical plate II 18 and flows into the manifold 23 through the inlet channel 22. Since the drain hole 24 is open, the residual regeneration liquid in the manifold 23 is immediately discharged downward through the drain hole 24 and flows back to the bottom of the regeneration chamber. This process realizes the automatic discharge of residual regeneration liquid and avoids its contamination of the subsequently generated bactericidal liquid. As the closed disc 20 continues to rise, when the top of the sliding rod 28 contacts the top inner wall of the vertical groove 27, the sliding rod 28 can no longer move upward relative to the closed disc 20. When the closed disc 20 rises further, it will drive the sliding rod 28, the closed plate I 26, and the iron block 30 to move upward together. After the iron block 30 moves upward, it will contact the magnetic block 3. As the distance between them increases, the magnetic attraction between them decreases rapidly. When the magnetic attraction is less than the elastic force of spring II 29, spring II 29 pushes sliding rod 28 upward. Sliding rod 28 drives sealing plate I 26 and rubber sealing plug I 25 upward. Rubber sealing plug I 25 re-closes drain hole 24. At this time, sealing plate 20 is still in the sealed position inside center hole 19. Hollow metal frame 5 has completely returned to the generation chamber. The regeneration liquid remaining on the surface of resin 6 has been drained. The system automatically returns to standby state. The operator can inject clean water into the generation chamber through inlet pipe I 2 to briefly rinse resin 6. During rinsing, three-way valve 14 switches to the port connected to the external recovery tank. The pump is started to extract the rinsing waste liquid and discharge it into the recovery tank. After rinsing, three-way valve 14 switches back to the port connected to outlet head 15. The equipment can then be put back into the production of sterilizing liquid.

[0035] Reference Figures 7-9A spraying device for spraying the disinfectant solution generated in the aforementioned N-haloamine disinfectant solution generator includes a tank body 32 for storing the N-haloamine disinfectant solution to be sprayed. A diaphragm pump 33 is fixed to the bottom of the tank body 32 via a mounting box. The diaphragm pump 33 provides spraying power to extract the disinfectant solution from the tank body 32. The inlet end of the diaphragm pump 33 extends into the tank body 32 via a hose, and the outlet end of the diaphragm pump 33 is fixed to an air supply duct 34 via a hose. The air supply duct 34 is a cylindrical shell with an internal air supply assembly. A spray pipe 36 is fixed to one end of the air supply duct 34. The spray pipe 36 is a pipe through which liquid and airflow are mixed and sprayed. Its outlet end points towards the target to be sprayed. The spray pipe 36 is equipped with a leak-proof mechanism to prevent residual liquid in the spray pipe 36 from flowing out from one end of the spray pipe 36 under pressure after the diaphragm pump 33 stops running, dripping onto precision equipment or the ground and causing irreversible spot corrosion. The leak-proof mechanism includes a sealing plate II 39 and a fixing plate 37 fixed inside the spray pipe 36. The sealing plate II 39 is a disc with a central hole, fixed in the middle and rear part of the inner wall of the spray pipe 36. The fixing plate 37 is located near the outlet end of the spray pipe 36. The fixing plate 37 is equipped with multiple spray holes 38. The spray holes 38 are small through holes used to atomize the liquid or form a fine jet.

[0036] Reference Figures 7-9The leak-proof mechanism also includes a piston plate I 41 that slides within the spray pipe 36. The piston plate I 41 is a circular piston with its outer edge dynamically sealing against the inner wall of the spray pipe 36. The piston plate I 41 is located between the sealing plate II 39 and the fixed plate 37. Multiple conical sealing heads 42 are fixed to the side of the piston plate I 41 closest to the fixed plate 37. The number and position of the conical sealing heads 42 correspond one-to-one with the spray holes 38 on the fixed plate 37. Each conical sealing head 42 has a conical surface that can be tightly pressed into the corresponding spray hole 38 to mechanically seal the spray hole 38, thereby preventing leakage. The disinfectant leaks through the spray nozzle 38. A guide rod 40 slides through the sealing plate II 39, its outer wall forming a sliding seal with the central hole of the sealing plate II 39. One end of the guide rod 40 is fixedly connected to the piston plate I 41, and the other end is fixed to the piston plate II 45. The piston plate II 45 is also a circular piston with its outer edge dynamically sealing against the inner wall of the spray pipe 36. The piston plate II 45 slides within the spray pipe 36, located on the side of the sealing plate II 39 furthest from the piston plate I 41, i.e., closer to the diaphragm pump 33. The sealing plate II 39 is close to the piston. A fixed cylinder 43 is fixed to one side of plate II 45. The fixed cylinder 43 is a cylindrical structure. One end of the guide rod 40 slides through the fixed cylinder 43 in a sealed manner. A spring III 44 is sleeved on the outer wall of the guide rod 40 inside the fixed cylinder 43. The end of the spring III 44 near the piston plate II 45 is fixedly connected to the inner wall of one side of the fixed cylinder 43, and the end of the spring III 44 near the sealing plate II 39 is fixedly connected to the outer wall of the guide rod 40. The spring III 44 is in a compressed state, and its elastic force is used to apply a thrust to the guide rod 40 in the direction of the fixed plate 37, so that when there is no hydraulic pressure, the guide rod 40 pushes the piston plate I 41, causing... The conical sealing head 42 tightly seals the spray hole 38. The outer wall of the spray pipe 36 is fixedly connected to multiple U-shaped tubes 47. The U-shaped tube 47 is a U-shaped bend, with its two ends connected to two different positions on the side wall of the spray pipe 36. One connection point is located on the side of the piston plate II 45 away from the sealing plate II 39, and the other connection point is located in the chamber between the piston plate I 41 and the fixed plate 37. The function of the U-shaped tube 47 is to allow the bactericidal liquid to bypass the piston plate II 45 and the piston plate I 41 and be injected directly from the inlet area near the diaphragm pump 33 into the area between the piston plate I 41 and the fixed plate 37.

[0037] Specifically, when the diaphragm pump 33 starts, the disinfectant solution in the tank 32 is pumped into the spray pipe 36. The liquid flow first fills the space between the piston plate II 45 and the sealing plate II 39. Due to the presence of the U-shaped tube 47, the liquid can simultaneously be injected directly into the chamber between the piston plate I 41 and the fixed plate 37 through the U-shaped tube 47. As the liquid is injected, the pressure between the piston plate I 41 and the fixed plate 37 rises rapidly. When the thrust generated by this pressure on the piston plate I 41 is greater than the elastic force of the spring III 44, the piston plate I 41... The piston plate I 41 moves towards the sealing plate II 39, simultaneously compressing the spring III 44. As the piston plate I 41 moves, it drives the guide rod 40 and piston plate II 45 to move together towards the sealing plate II 39. The movement of piston plate I 41 causes the conical sealing head 42 to disengage from the spray hole 38, opening the spray channel. At this time, the disinfectant can be sprayed out through the spray hole 38. The diaphragm pump 33 continues to operate, and the spray hole 38 continues to spray. When the diaphragm pump 33 stops operating, the liquid pressure in the spray pipe 36 drops rapidly, and piston plate I 41 and... The pressure between the fixed plates 37 also decreases. When the pressure is lower than the elastic force of spring III 44, spring III 44 begins to reset, pushing guide rod 40 and piston plate I 41 towards the fixed plate 37. As piston plate I 41 moves, the conical sealing head 42 is pressed into the spray hole 38 again, sealing it. At the same time, the movement of piston plate I 41 reduces the volume of the chamber between piston plate I 41 and fixed plate 37. More importantly, guide rod 40, which is fixedly connected to piston plate I 41, pulls piston plate II 45 together. As the piston plate II 45 moves toward the fixed plate 37, the movement of the piston plate II 45 increases the volume of the chamber between it and the air supply duct 34, thereby generating a certain negative pressure. This negative pressure acts on the chamber between the piston plate I 41 and the fixed plate 37 through the U-shaped tube 47, drawing back the small amount of residual disinfectant liquid to the side of the piston plate II 45 through the U-shaped tube 47. In this way, not only is the nozzle 38 physically sealed, but the liquid in front of the nozzle 38 is also drawn back, avoiding the possibility of residual liquid slowly dripping out due to gravity or residual pressure.

[0038] Reference Figure 9 and Figure 10 To facilitate the discharge of back pressure when the piston plate I 41 moves, the outer wall of the spray pipe 36 is provided with a through hole 46, which is located between the piston plate I 41 and the fixed plate 37. When the piston plate I 41 moves towards the sealing plate II 39, the through hole 46 can discharge the air or liquid on the back of the piston plate I 41, avoiding the formation of back pressure that hinders movement; conversely, when the piston plate I 41 is reset, the through hole 46 can draw in air, avoiding the generation of vacuum resistance.

[0039] Reference Figure 9 and Figure 10To achieve better spraying results, an impeller 35 rotates within the air supply duct 34 via a mounting bracket. The mounting bracket houses a motor, such as a brushless DC motor, to drive the impeller 35. The motor drives the impeller 35 to rotate at high speed, generating a high-speed airflow that blows the disinfectant towards the spray pipe 36. This further atomizes the disinfectant sprayed from the nozzle 38 into fine particles, which are then directed towards the target. The air supply duct 34 also contains a high-voltage electrostatic generator (not shown in the figure). This high-voltage electrostatic generator can be a DC high-voltage power supply module, whose output is connected to the spray pipe 36 or the fixed plate 37. This causes the disinfectant droplets sprayed from the nozzle 38 to carry the same charge, resulting in mutual repulsion between the droplets. This further refines the droplets and allows them to more effectively adhere to the surface of the sprayed target, improving spraying efficiency and uniformity.

[0040] In another embodiment: Refer to Figure 7 , Figure 8 and Figure 11 This invention features a screwless, leak-proof filling interface at the top of the barrel 32. The top of the barrel 32 has a circular through-hole for liquid inlet. A U-shaped plate 48, an inverted U-shaped support, is fixed to the inner wall of the top of the barrel 32. A vertical rod 49 slides vertically through the U-shaped plate 48, with its top end extending from the top of the U-shaped plate 48 and further upward through the liquid inlet to the outside of the barrel 32. A sealing plate III 50, located inside the barrel 32, is fixedly fitted onto the outer wall of the vertical rod 49. The sealing plate III 50 has an area larger than the diameter of the liquid inlet, used to seal the liquid inlet. A rubber sealing plug II 51 is fixed to the top of the sealing plate III 50, its shape matching the liquid inlet, allowing it to be inserted into the liquid inlet for sealing. A spring connects the bottom of the sealing plate III 50 to the inner wall of the bottom of the U-shaped plate 48. A spring IV52 is fixed to the seat and sleeved on the outer wall of the vertical rod 49. When the spring IV52 is in a compressed state, its elastic force pushes the sealing plate III50 upward, causing the rubber sealing plug II51 to press tightly against the edge of the liquid inlet, thus achieving a normally closed seal. A corrugated bellows cover 53 is fixed between the sealing plate III50 and the U-shaped plate 48. The corrugated bellows cover 53 is a retractable flexible protective sleeve that is sleeved on the outside of the spring IV52 to protect the spring IV52 and prevent the liquid or impurities from corroding the spring. A fixing ring 54 is fixed to the top of the barrel 32. The fixing ring 54 is a circular protrusion, and its inner diameter forms a clearance fit with the outer diameter of the liquid outlet 15, so that the liquid outlet 15 can slide smoothly up and down inside it. The fixing ring 54 and the liquid inlet are strictly coaxial. The top of the vertical rod 49 and the center plate 17 inside the liquid outlet 15 form an abutment fit during filling.

[0041] When adding the liquid medicine, the operator only needs to align the dispensing head 15 on the generator with the fixing ring 54 at the top of the tank 32 and insert it downwards. During insertion, the center plate 17 inside the dispensing head 15 will first contact the top of the vertical rod 49. Continuing to press down on the dispensing head 15, the center plate 17 will push the vertical rod 49 downwards against the elastic force of the spring IV 52. The downward movement of the vertical rod 49 will cause the sealing plate III 50 and the rubber sealing plug II 51 to move downwards together, thereby opening the inlet hole. The rubber ring 16 on the outer wall of the dispensing head 15 will abut against the top of the fixing ring 54, forming a ring seal to prevent the liquid medicine from leaking out. Splashing out from the gap, at this time, the outlet of the liquid outlet 15 is directly facing the open inlet hole. The operator can start the pump to inject the disinfectant stored in the shell 1 directly into the tank 32 through the liquid outlet 15 and the inlet hole. The entire filling process can be completed with one hand without any capping action, and the seal is reliable, completely avoiding the risk of liquid exposure and splashing. After filling, pull the liquid outlet 15 upward, the center plate 17 moves away from the vertical rod 49, and under the elastic force of the spring IV 52, the sealing plate III 50 and the rubber sealing plug II 51 automatically reset and reseal the inlet hole.

[0042] A method of using a spraying device includes the following steps: S1. After the bactericidal liquid generated by the N-haloamine bactericidal liquid generator is injected into the tank 32 of the spraying device, during the spraying operation, the motors in the diaphragm pump 33 and the air supply duct 34 are started. The diaphragm pump 33 pumps the bactericidal liquid in the tank 32 through the hose to the spray pipe 36. After the bactericidal liquid enters the spray pipe 36, part of the liquid fills the space between the piston plate II 45 and the sealing plate II 39, and the other part of the liquid directly enters the space between the piston plate I 41 and the fixed plate 37 through multiple U-shaped tubes 47 fixed on the outer wall of the spray pipe 36. As the bactericidal liquid is continuously injected... As the liquid pressure between piston plate I 41 and fixed plate 37 increases, when the thrust generated by this pressure on piston plate I 41 is greater than the elastic force of spring III 44 in fixed cylinder 43, piston plate I 41 moves toward the direction of closing plate II 39. When piston plate I 41 moves, it drives the conical closing head 42 fixed on it to disengage from the spray hole 38 on fixed plate 37. At the same time, it drives piston plate II 45 to move in the same direction through guide rod 40 and compresses spring III 44. After the spray hole 38 is opened, the bactericidal liquid is sprayed out from the spray hole 38 under pressure, forming fine droplets. S2. The motor inside the air supply duct 34 drives the impeller 35 to rotate at high speed, generating a high-speed airflow. The high-speed airflow flows through the spray pipe 36, further breaking and atomizing the fine droplets sprayed from the nozzle 38, and carrying them towards the target direction. The high-voltage electrostatic generator inside the air supply duct 34 generates DC high voltage, which is applied to the spray pipe 36 or the fixed plate 37, so that the sprayed droplets have the same charge. Droplets with the same charge repel each other, further refining the droplet size and enabling them to more effectively adhere to the surface of the sprayed target. S3. When the diaphragm pump 33 stops running, the tank 32 stops supplying liquid to the spray pipe 36. The liquid pressure between the piston plate I 41 and the fixed plate 37 drops rapidly. When the thrust generated by this pressure on the piston plate I 41 is less than the elastic force of the spring III 44, the spring III 44 begins to extend, pushing the guide rod 40 to move away from the sealing plate II 39. The guide rod 40 pushes the piston plate I 41 to move towards the fixed plate 37. The conical sealing head 42 fixed on the piston plate I 41 moves accordingly and re-presses the spray hole 38, achieving physical sealing of the spray hole 38. At the same time, the movement of the piston plate I 41 reduces the volume of the space between the piston plate I 41 and the fixed plate 37. The residual liquid is squeezed out. However, when the piston plate II 45, which is fixedly connected to the guide rod 40, moves toward the fixed plate 37, it increases the volume of the space between the piston plate II 45 and the air supply tube 34, forming a negative pressure. This negative pressure is transmitted to the space between the piston plate I 41 and the fixed plate 37 through the U-shaped tube 47, and the residual liquid is drawn back to the side of the piston plate II 45 through the U-shaped tube 47. Through the physical sealing of the spray hole 38 and the back suction of the residual liquid, the phenomenon of liquid leakage or dripping at the front end of the spray pipe 36 after spraying stops is completely avoided. The through hole 46 provided on the outer wall of the spray pipe 36 balances the back pressure when the piston plate I 41 moves, ensuring that the piston plate I 41 moves smoothly. S4. When adding N-haloamine disinfectant to the tank 32 of the spraying device, the operator does not need to perform any capping or plugging action. The operator directly aligns the N-haloamine disinfectant generator outlet head 15 with the fixing ring 54 fixed at the top of the tank 32 and inserts the outlet head 15 downwards. The inner diameter of the fixing ring 54 and the outer diameter of the outlet head 15 form a clearance fit, guiding the outlet head 15 to be inserted vertically. S5. During insertion, the center plate 17 inside the outlet head 15 first contacts the top of the vertical rod 49 inside the liquid inlet hole at the top of the barrel 32. As the outlet head 15 continues to press down, the center plate 17 overcomes the elastic force of the spring IV 52, pushing the vertical rod 49 downwards. The movement of the vertical rod 49 causes the sealing plate III 50, which is fixedly sleeved on its outer wall, and the rubber sealing plug II 51, fixed to the top of the sealing plate III 50, to move downwards. The rubber sealing plug II 51 disengages from the liquid inlet hole, opening the liquid inlet hole. Simultaneously, the rubber ring 16 fixed to the outer wall of the outlet head 15 abuts against the top end face of the fixing ring 54. This generates elastic deformation, forming a ring seal to prevent liquid from splashing out from the gap between the outlet head 15 and the fixing ring 54. At this time, the outlet of the outlet head 15 is directly above the inlet hole. The operator starts the pump in the N-haloamine disinfectant generator and switches the three-way valve 14 to the port connected to the outlet head 15. The disinfectant is injected directly into the tank 32 through the outlet head 15 and the open inlet hole. The entire filling process can be completed by the operator with one hand, without any auxiliary tools or capping action. The liquid is in a sealed channel throughout the process, with no risk of exposure or splashing. S6. After filling, the operator pulls out the liquid outlet 15 upwards, the center plate 17 moves away from the top of the vertical rod 49, the downward pressure applied to the vertical rod 49 disappears, the compressed spring IV 52 releases its elasticity, pushing the sealing plate III 50 upwards. The sealing plate III 50 drives the rubber sealing plug II 51 to re-insert into the liquid inlet hole, thus sealing the liquid inlet hole. At the same time, the corrugated bellows cover 53 fixed between the sealing plate III 50 and the U-shaped plate 48 unfolds as the sealing plate III 50 moves, protecting the spring IV 52. The liquid inlet hole of the barrel 32 returns to its normally closed sealed state, waiting for the next filling operation.

[0043] When this device is used in highly polluted environments, it is recommended to clean the exterior of the housing 1 and the exposed section of the slide bar 7 after each use, and to periodically check the integrity of each seal. The corrugated protective cover and sealing flange are both replaceable to maintain the long-term reliability of the equipment in harsh environments.

[0044] Experimental method: N-haloamine bactericidal solution was prepared using the apparatus of this invention. 900 μL of the bactericidal solution was then reacted with 100 µL of Klebsiella pneumoniae (2 × 10⁻⁶ cells / mL). 6 CFU / mL, isolated from air in the milking parlor of the dairy farm), Acinetobacter rofibrinolyticus (1×10⁻⁶ ...). 6 CFU / mL, isolated from air in cattle sheds in pastures), Staphylococcus epidermidis (1×10⁻⁶ ...). 6 CFU / mL, isolated from dairy cow drinking water in pastures) and Enterococcus faecalis (1×10⁻⁶ CFU / mL, isolated from dairy cow drinking water in pastures) and Enterococcus faecium (1×10⁻⁶ CFU / mL, isolated from dairy cow drinking water in pastures) 6 After mixing and reacting for 1 h with CFU / mL (separated from the air in the cattle shed of the ranch), the sterilization rate was as high as 99.9999% as determined by plate counting, indicating that the N-haloamine bactericidal resin has a strong bactericidal effect on the ranch environment. Figure 12 ).

[0045] The N-haloamine bactericidal resin (initial available chlorine content 2.06 wt%) and the recycled chlorinated resin were directly mixed with 200 mL of 10% chlorine solution. 6 A mixture of CFU / mL Staphylococcus epidermidis (isolated from dairy cow drinking water) was used to observe the bactericidal effect by taking 1 mL of the liquid and spreading it on a plate at 15, 20, 25, and 30 min. Figure 13 As the contact sterilization time increases, the sterilization rate gradually increases. Ultimately, the initial resin (effective chlorine content: 2.06 wt%) achieved a sterilization rate of 99.3% after 30 minutes of contact sterilization; the resin after the second regeneration chlorination (effective chlorine content: 1.85 wt%) achieved a sterilization rate of 98.6% after 30 minutes of contact sterilization; this indicates that the N-haloamine sterilizing resin can be efficiently recycled and chlorinated using the device of this invention.

[0046] However, as is well known to those skilled in the art, the working principle and wiring method of the diaphragm pump 33 are conventional methods or common knowledge, and will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0047] 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.

[0048] 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. An N-haloamine bactericidal solution generator, characterized in that, include: The shell (1) has a conical plate II (18) fixed inside it, and the shell (1) has a generation cavity and a regeneration cavity arranged vertically through the conical plate II (18). The regeneration cavity is used to contain the regeneration liquid, and the conical plate II (18) has a central hole (19). The liquid inlet pipe I (2) is fixed to one side of the housing (1) and connected to the generating cavity, and is used to inject water into the housing (1); A sealing disk (20) is disposed inside the central hole (19) for sealing the central hole (19). The generating mechanism, disposed within the generating cavity, includes a perforated metal frame (5) and an N-haloamine resin (6) disposed within the perforated metal frame (5), wherein the perforated metal frame (5) is fixedly connected to the closed disk (20); and, The switching mechanism is set on the housing (1) and includes two slide rods (7) and a top plate (8) fixed on the top of the two slide rods (7). The bottom ends of the two slide rods (7) slide into the housing (1) and are fixedly connected to the top of the hollow metal frame (5) to drive the hollow metal frame (5) and the N-haloamine resin (6) into the generation chamber and the regeneration chamber respectively. The N-haloamine resin (6) is used to contact the water flowing through it to generate an N-haloamine bactericide solution.

2. The N-haloamine bactericidal liquid generator according to claim 1, characterized in that, The generating mechanism also includes a conical plate I (4) fixed in the generating cavity, and the hollow metal frame (5) penetrates the conical plate I (4). The top diameter of the conical plate I (4) and the conical plate II (18) is greater than the bottom diameter.

3. The N-haloamine bactericidal liquid generator according to claim 2, characterized in that, It also includes a drainage mechanism, which comprises: The manifold (23) is disposed within the enclosed disk (20); Multiple liquid inlet channels (22) are provided on the outer wall of the closed disk (20) and are connected to the manifold (23); A drain hole (24) is provided at the bottom of the closed disc (20); A sealing plate I (26) is disposed at the bottom of the sealing disk (20), and a rubber sealing plug I (25) extending into the drain hole (24) is fixed at the top of the sealing plate I (26). Multiple vertical slots (27) are provided inside the enclosed disk (20); Multiple sliding rods (28) are slidably connected in multiple vertical slots (27), and the bottom end of the sliding rod (28) extends slidably to the bottom of the closed disk (20) and is fixedly connected to the top of the closed plate I (26); Multiple springs II (29) are respectively disposed in multiple vertical grooves (27). The top end of the spring II (29) is fixedly connected to the outer wall of the sliding rod (28), and the bottom end of the spring II (29) is fixedly connected to the bottom inner wall of the vertical groove (27). They are used to apply an upward thrust to the sealing plate I (26) to close the drain hole (24). A liquid guide tube (13) is fixedly inserted through the hollow metal frame (5). The bottom end of the liquid guide tube (13) is fixedly extended into the manifold (23), and the top end of the liquid guide tube (13) slides through the housing (1). Iron block (30) is fixed to the bottom of the closed plate I (26); A horizontal plate is fixed inside the regeneration cavity; A round rod slides vertically through the horizontal plate. A limiting ring is fixedly sleeved on the outer wall of the round rod to limit its downward movement. A counterweight is fixed at the bottom end of the round rod. A magnetic block (31) is fixed to the top of the round rod and is used to generate a magnetic attraction force with the iron block (30) to drive the sealing plate I (26) to move down and release the sealing of the drain hole (24); The magnetic attraction between the magnetic block (31) and the iron block (30) is greater than the elastic force of the spring II (29).

4. The N-haloamine bactericidal solution generator according to claim 3, characterized in that, The thickness of the closed disc (20) is less than the height of the central hole (19), and the inner wall of the central hole (19) is fixedly fitted with a plurality of rubber sealing rings (21) for cooperating with the closed disc (20) to increase the sealing performance.

5. The N-haloamine bactericidal liquid generator according to claim 4, characterized in that, The switching mechanism also includes a spring I (9), a base plate (10), and a pin (11). The spring I (9) is sleeved on the outer wall of one of the slide rods (7), and its two ends abut against the bottom of the top plate (8) and the top of the housing (1) respectively. The base plate (10) is fixed to the top of the housing (1). The pin (11) slides through the base plate (10). Another slide rod (7) is provided with an insertion hole (12) for cooperating with the pin (11) to limit the slide rod (7). The top plate (8) is provided with a pump body that is connected to the top of the liquid guide pipe (13). The outlet end of the pump body is connected to a three-way valve (14). The first port of the three-way valve (14) is connected to an outlet head (15) through a hose, which is used to discharge the sterilization liquid in the shell (1). The second port of the three-way valve (14) is connected to an external recycling box through a hose. A rubber ring (16) is fixed on the outer wall of the outlet head (15). A center plate (17) is fixed inside the outlet head (15) through a crossbar.

6. A spraying device for spraying the bactericidal liquid generated in the N-haloamine bactericidal liquid generator according to claim 5, characterized in that, include: Barrel body (32); A diaphragm pump (33) is fixed to the bottom of the tank (32) by a mounting box, and the inlet end of the diaphragm pump (33) extends into the tank (32) through a hose; The air supply duct (34) is fixedly connected to the liquid outlet end of the diaphragm pump (33) via a hose; A spray pipe (36) is fixed to one end of the air supply duct (34); and, The leak-proof mechanism is installed inside the spray pipe (36) and includes a sealing plate II (39) and a fixing plate (37) fixed inside the spray pipe (36). The fixing plate (37) is located at the end of the spray pipe (36) near the outlet and has multiple spray holes (38) inside.

7. A spraying device according to claim 6, characterized in that, The leak-proof mechanism also includes a piston plate I (41), multiple conical sealing heads (42), a guide rod (40), a piston plate II (45), a fixed cylinder (43), a spring III (44), and multiple U-shaped tubes (47). The piston plate I (41) is sealed and slides within the spray pipe (36) and is located between the sealing plate II (39) and the fixed plate (37). The multiple conical sealing heads (42) are fixed to the side of the piston plate I (41) near the fixed plate (37) and are used to seal multiple spray holes (38). The guide rod (40) is sealed and slides through the sealing plate II (39). One end of the guide rod (40) is fixedly connected to the piston plate I (41). The piston plate II (45) is fixed to the other end of the guide rod (40) and is sealed and slides within the spray pipe (36). The piston plate II (45) is located within the... The sealing plate II (39) is located away from the piston plate I (41). The fixed cylinder (43) is fixed to the sealing plate II (39) on the side close to the piston plate II (45). One end of the guide rod (40) is sealed and slides through the fixed cylinder (43). The spring III (44) is sleeved on the outer wall of the guide rod (40) and located inside the fixed cylinder (43). One end of the spring III (44) is fixedly connected to the inner wall of the fixed cylinder (43), and the other end of the spring III (44) is fixedly connected to the outer wall of the guide rod (40) to apply a thrust to the guide rod (40) in the direction of the fixed disc (37). A plurality of U-shaped tubes (47) are fixedly connected to the outer wall of the spray pipe (36). The two ends of the U-shaped tubes (47) are located on the side away from the piston plate II (45) and the piston plate I (41) respectively.

8. A spraying device according to claim 7, characterized in that, The outer wall of the spray pipe (36) is provided with a through hole (46), which is located between the piston plate I (41) and the fixed plate (37).

9. A spraying device according to claim 8, characterized in that, An impeller (35) rotates inside the air supply duct (34) via a mounting bracket. The mounting bracket is equipped with a motor for driving the impeller (35) to rotate. The air supply duct (34) is equipped with a high-voltage electrostatic generator for making the bactericidal liquid blown out by the impeller (35) carry static electricity.

10. A spraying device according to claim 9, characterized in that, The top of the barrel (32) is provided with a liquid inlet hole. A U-shaped plate (48) is fixed to the inner wall of the top of the barrel (32). A vertical rod (49) slides through the U-shaped plate (48) vertically. The top of the vertical rod (49) passes through the liquid inlet hole. A sealing plate III (50) located inside the barrel (32) is fixedly sleeved on the outer wall of the vertical rod (49). A rubber sealing plug II (51) extending to the liquid inlet hole is fixed to the top of the sealing plate III (50). The bottom of the sealing plate III (50) is connected to the U-shaped plate (48). A spring IV (52) is fixed between the inner walls of the bottom by a spring seat. The spring IV (52) is sleeved on the outer wall of the vertical rod (49). A corrugated accordion cover (53) for protecting the spring IV (52) is fixed between the sealing plate III (50) and the U-shaped plate (48). A fixing ring (54) is fixed on the top of the barrel (32). The liquid outlet (15) is clearance-fitted with the fixing ring (54). The fixing ring (54) is coaxial with the liquid inlet hole. The vertical rod (49) abuts against the center plate (17).

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