Two-stage electrolysis and photocatalyst disinfection equipment and method

Abstract

The invention relates to two-stage electrolysis and photocatalyst disinfection equipment and method, the two-stage electrolysis and photocatalyst disinfection equipment comprises a first-stage electrolysis disinfection box and a second-stage photocatalyst circulation disinfection box, and a liquid conveying pipe is arranged between the first-stage electrolysis disinfection box and the second-stage photocatalyst circulation disinfection box; the liquid conveying pipe is used for conveying water in the first-stage electrolysis disinfection box into the second-stage photocatalyst circulating disinfection box, and liquid level sensors are arranged on one side of the first-stage electrolysis disinfection box and one side of the second-stage photocatalyst circulating disinfection box and at least used for measuring liquid in the first-stage electrolysis disinfection box and liquid in the second-stage photocatalyst circulating disinfection box; and a circulating pipe fitting is arranged on one side of the secondary photocatalyst circulating disinfection box. Through the synergistic effect of the automatic water inlet system, the two-stage disinfection system and the automatic control system, efficient disinfection and continuous bacteriostasis of a dental chair water way are achieved. Tap water is electrolyzed by the first-stage electrolytic tank to generate hypochlorous acid, a photocatalyst in the second-stage photocatalyst water tank is excited by ultraviolet light to generate hydroxyl radicals, and the two-stage synergistic disinfection efficiency is improved by 90% or above.

Description

Technical Field

[0001] The present invention relates to the technical field of medical device disinfection, and in particular to a two-stage electrolysis and photocatalyst disinfection device and method. Background Art

[0002] During dental care, there's an invisible infection factor: dental chair water contamination. Like an invisible "sewage drain," it's a major cause of cross-infection during dental care. Due to the texture and construction of the plastic tubing and the smooth, thin inner walls of the dental chair waterway, microbial biofilms easily form, leading to frequent microbial contamination of the water flowing through the dental chair. During dental care, this contaminated water can directly enter the patient's mouth or form aerosols, entering the respiratory tract of the patient or medical staff, creating the risk of nosocomial infection.

[0003] Current dental chair disinfection equipment suffers from the following issues: Low disinfection efficiency: Traditional chemical disinfection requires manual operation, which carries the risk of residual disinfectant. Waterway contamination: Backdraft from high-speed dental handpieces leads to the growth of biofilm in waterways, making it difficult to completely remove with existing disinfection methods. Complex operation: Frequent replacement of disinfectant bottles increases the workload for medical staff. Therefore, a dual-stage electrolysis and photocatalytic disinfection device and method are urgently needed to address these issues. Summary of the Invention

[0004] The object of the present invention is to provide a two-stage electrolysis and photocatalytic disinfection device and method to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A two-stage electrolysis and photocatalyst disinfection device comprises a primary electrolysis disinfection box and a secondary photocatalyst circulation disinfection box, wherein an infusion tube is provided between the primary electrolysis disinfection box and the secondary photocatalyst circulation disinfection box, the infusion tube is used to transport water inside the primary electrolysis disinfection box to the interior of the secondary photocatalyst circulation disinfection box, a liquid level sensor is provided on one side of the primary electrolysis disinfection box and the secondary photocatalyst circulation disinfection box, the liquid level sensor is used at least to measure the liquid inside the primary electrolysis disinfection box and the secondary photocatalyst circulation disinfection box, a circulation pipe is provided on one side of the secondary photocatalyst circulation disinfection box, and one end of the circulation pipe is connected to the bottom of the primary electrolysis disinfection box for drainage, a plurality of dental equipment is provided on the circulation pipe, and a water inlet pipe is provided on the top of the primary electrolysis disinfection box, the water inlet pipe introduces clean water into the interior of the primary electrolysis disinfection box.

[0007] Preferably, a control cabinet is also included, and the control cabinet is used for overall control of the disinfection equipment.

[0008] Preferably, the control cabinet is composed of a residual chlorine sensor, a programmable logic controller (PLC), and a human-computer interaction interface.

[0009] Preferably, an electrolytic cell is provided inside the first-level electrolytic disinfection box, an anode and a cathode are provided inside the electrolytic cell, the anode and the cathode are connected to an electrolysis control box located outside the first-level electrolytic disinfection box, and a drain pipe is provided on one side of the bottom of the first-level electrolytic disinfection box.

[0010] Preferably, the anode is made of titanium plated with ruthenium iridium, the cathode is made of titanium, and the current density between the anode and cathode is 10-20 mA / cm 2 The effective chlorine concentration of hypochlorous acid generated by electrolysis is 40-80 mg / L.

[0011] Preferably, the inner wall of the secondary photocatalyst circulation disinfection box is coated with a nano titanium dioxide photocatalyst layer, a plurality of ultraviolet lamps are arranged inside the secondary photocatalyst circulation disinfection box, and a wire pipe for laying wires is arranged above the ultraviolet lamp. A drain pipe 2 is arranged on one side of the bottom of the secondary photocatalyst circulation disinfection box, and the wavelength of the ultraviolet lamp is 254nm.

[0012] Preferably, the liquid level sensor includes a mounting base fixed on the outer wall of the first-level electrolytic disinfection box or the second-level photocatalyst circulation disinfection box, and a connecting pipe connected to the first-level electrolytic disinfection box or the second-level photocatalyst circulation disinfection box is provided on the outside of the mounting base, a grating measuring scale is provided on the outer wall of one side of the mounting base, and the outer sleeve of the connecting pipe is provided with a light shield.

[0013] Preferably, the circulation pipe includes a circulation pipe, which is provided with a circulation pipe pressure sensor, a one-way valve, and a circulation pump. The circulation pump is close to one end of the secondary photocatalyst circulation disinfection box, and several dental equipment are connected to the circulation pipe.

[0014] Preferably, the water inlet pipe comprises a water inlet pipe, on which a manual valve, a water inlet pressure sensor, a solenoid valve and a filter are sequentially arranged, and the filter is a PP cotton filter.

[0015] A method for using a two-stage electrolysis and photocatalyst disinfection device, comprising the two-stage electrolysis and photocatalyst disinfection device, comprises the following steps:

[0016] Step 1: When the liquid level sensor detects that the water level in the first-level electrolytic disinfection tank is lower than the low water level, the solenoid valve opens to let water in, and the PP cotton filter is used to filter the incoming water;

[0017] Step 2: After the liquid level sensor detects that the water level in the first-level electrolytic disinfection tank has reached the high water level, the electrolysis control box of the electrolytic tank is powered on to continuously electrolyze the water inside the electrolytic tank to generate hypochlorous acid disinfectant;

[0018] Step 3: The disinfectant flows into the interior of the secondary photocatalyst circulation disinfection box through the infusion tube. The water contacts the nano-titanium dioxide photocatalyst layer inside the secondary photocatalyst circulation disinfection box and is irradiated with ultraviolet light. The photocatalytic reaction produces hydroxyl free radicals, which continuously disinfects and circulates to inhibit bacteria.

[0019] Step 4: The water treated by the secondary photocatalyst circulation disinfection box is transported to the dental equipment through the circulation pipe for use. At the same time, the circulation pipe circulates the water drawn out from the secondary photocatalyst circulation disinfection box to the interior of the primary electrolytic disinfection box.

[0020] In the above technical solution, the present invention provides a two-stage electrolysis and photocatalytic disinfection device and method, which has the following beneficial effects:

[0021] This invention achieves efficient disinfection and sustained antibacterial control of dental chair waterways through the synergistic effects of an automatic water inlet system, a two-stage disinfection system, and an automatic control system. A primary electrolytic cell electrolyzes tap water to produce hypochlorous acid, while a secondary photocatalyst water tank excites the photocatalyst via ultraviolet light to produce hydroxyl radicals. This two-stage synergistic disinfection efficiency improves by over 90%. The device features one-button start, automatic mode switching, and real-time residual chlorine monitoring, addressing the issues of low disinfection efficiency, complex operation, and waterway contamination associated with traditional dental chair disinfection. It is suitable for use in scenarios such as comprehensive dental treatment units. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0023] Figure 1 This is a schematic structural diagram of an embodiment of a two-stage electrolysis and photocatalyst disinfection device and method provided by the present invention.

[0024] Figure 2 This is a structural schematic diagram from another angle provided for an embodiment of a two-stage electrolysis and photocatalyst disinfection device and method of the present invention.

[0025] Figure 3 This is a schematic diagram of the circulation pipe structure provided in an embodiment of a two-stage electrolysis and photocatalyst disinfection device and method of the present invention.

[0026] Figure 4 This is a schematic diagram of the water inlet pipe structure provided in an embodiment of a two-stage electrolysis and photocatalytic disinfection device and method of the present invention.

[0027] Figure 5 A schematic diagram of the liquid level sensor structure provided in an embodiment of a two-stage electrolysis and photocatalytic disinfection device and method of the present invention.

[0028] Figure 6 This is a cross-sectional view of the structure of a first-stage electrolysis disinfection box provided in an embodiment of a two-stage electrolysis and photocatalyst disinfection device and method of the present invention.

[0029] Figure 7 This is a cross-sectional view of the structure of a two-stage photocatalyst circulation disinfection box provided in an embodiment of a two-stage electrolysis and photocatalyst disinfection device and method of the present invention.

[0030] 1. Primary electrolytic disinfection box; 11. Electrolytic cell; 12. Drain pipe 1; 13. Anode; 14. Cathode; 15. Electrolytic control box; 2. Secondary photocatalyst circulation disinfection box; 21. Nano-titanium dioxide photocatalyst layer; 22. Ultraviolet lamp; 23. Drain pipe 2; 24. Wire pipe; 3. Infusion tube; 4. Liquid level sensor; 41. Mounting base; 42. Grating measuring ruler; 43. Connecting pipe; 44. Light shield; 5. Circulation pipe fittings; 51. Circulation pipe; 52. Circulation pipe pressure sensor; 53. Circulation pump; 54. One-way valve; 6. Dental equipment; 7. Control cabinet; 8. Water inlet pipe fittings; 81. Water inlet pipe; 82. Manual valve; 83. Water inlet pressure sensor; 84. Solenoid valve; 85. Filter. DETAILED DESCRIPTION

[0031] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0032] like Figure 1-7 As shown, a two-stage electrolysis and photocatalyst disinfection equipment provided by an embodiment of the present invention includes a first-level electrolysis disinfection box 1 and a second-level photocatalyst circulation disinfection box 2. An infusion tube 3 is arranged between the first-level electrolysis disinfection box 1 and the second-level photocatalyst circulation disinfection box 2. The infusion tube 3 is used to transport the water inside the first-level electrolysis disinfection box 1 to the inside of the second-level photocatalyst circulation disinfection box 2. A liquid level sensor 4 is arranged on one side of the first-level electrolysis disinfection box 1 and the second-level photocatalyst circulation disinfection box 2. The liquid level sensor 4 is at least used to measure the liquid inside the first-level electrolysis disinfection box 1 and the second-level photocatalyst circulation disinfection box 2. A circulation pipe 5 is arranged on one side of the second-level photocatalyst circulation disinfection box 2, and one end of the circulation pipe 5 is connected to the bottom of the first-level electrolysis disinfection box 1. Several dental equipment 6 are connected to the circulation pipe 5. A water inlet pipe 8 is arranged on the top of the first-level electrolysis disinfection box 1. The water inlet pipe 8 introduces clean water into the interior of the first-level electrolysis disinfection box 1.

[0033] In this embodiment, it includes a first-level electrolytic disinfection box 1;

[0034] The first-level electrolytic disinfection box 1 is provided with an electrolytic cell 11, and the electrolytic cell 11 is provided with an anode 13 and a cathode 14; the anode 13 is made of titanium plated with ruthenium iridium, and the cathode 14 is made of titanium. The current density between the anode 13 and the cathode 14 is 10-20 mA / cm 2 The effective chlorine concentration of the electrolytically generated hypochlorous acid is 40-80 mg / L. The anode 13 and the cathode 14 are connected to the electrolysis control box 15 located outside the first-level electrolysis disinfection box 1. The electrolysis time is 15-40 minutes, killing 99.9% of bacteria and viruses. A drain pipe 12 is provided on one side of the bottom of the first-level electrolysis disinfection box 1 for discharging water or disinfectant inside the first-level electrolysis disinfection box 1.

[0035] In this embodiment, the secondary photocatalyst circulation disinfection box 2;

[0036] The inner wall of the secondary photocatalyst circulation disinfection box 2 is coated with a nano-titanium dioxide photocatalyst layer 21. Nano-photocatalysis uses the effect of titanium dioxide (TiO2) semiconductor to activate the surface of the material to adsorb oxygen and moisture, generate active hydroxyl free radicals and superoxide anion free radicals, which are converted into an active substance with safe chemical energy, which plays a role in mineralization and degradation of environmental pollutants and antibacterial and sterilization. Several ultraviolet lamps 22 are arranged inside the secondary photocatalyst circulation disinfection box 2, and a wire pipe 24 for laying wires is arranged above the ultraviolet lamp 22. A drain pipe 23 is arranged on one side of the bottom of the secondary photocatalyst circulation disinfection box 2. The wavelength of the ultraviolet lamp 22 is 254nm. The bactericidal effect in this band is the strongest, which can destroy the DNA or RNA structure of microorganisms and cause cell death.

[0037] In this embodiment, a liquid infusion tube 3 is provided between the primary electrolytic disinfection box 1 and the secondary photocatalyst circulation disinfection box 2, and the liquid infusion tube 3 is used to transport the water inside the primary electrolytic disinfection box 1 to the inside of the secondary photocatalyst circulation disinfection box 2;

[0038] In this embodiment, a liquid level sensor 4 is provided on one side of the primary electrolytic disinfection box 1 and the secondary photocatalyst circulation disinfection box 2. The liquid level sensor 4 is used at least to measure the liquid inside the primary electrolytic disinfection box 1 and the secondary photocatalyst circulation disinfection box 2;

[0039] The liquid level sensor 4 includes a mounting base 41 fixed on the outer wall of the first-level electrolytic disinfection box 1 or the second-level photocatalyst circulation disinfection box 2, and a connecting pipe 43 connected to the first-level electrolytic disinfection box 1 or the second-level photocatalyst circulation disinfection box 2 is provided on the outside of the mounting base 41. A grating measuring scale 42 is provided on the outer wall of one side of the mounting base 41, and a light shield 44 is provided on the outside of the connecting pipe 43. The grating measuring scale 42 is used to illuminate the connecting pipe 43 to obtain the height of the liquid level inside the connecting pipe 43, thereby realizing real-time monitoring of the liquid inside the box.

[0040] In this embodiment, a circulation pipe 5 is provided on one side of the secondary photocatalyst circulation disinfection box 2, and one end of the circulation pipe 5 is connected to the bottom of the primary electrolytic disinfection box 1. A plurality of dental equipment 6 are connected to the circulation pipe 5.

[0041] The circulation pipe fitting 5 includes a circulation pipe 51, on which a circulation pipe pressure sensor 52, a one-way valve 54, and a circulation pump 53 are provided. The circulation pump 53 is close to one end of the secondary photocatalyst circulation disinfection box 2, and several dental equipment 6 are connected to the circulation pipe 51. The circulation pump flow rate of the circulation pump 53 and the circulation pipe 51 is 5-10L / min, achieving 360° disinfection without dead angles.

[0042] In this embodiment, a water inlet pipe 8 is provided on the top of the primary electrolytic disinfection box 1 , and the water inlet pipe 8 introduces clean water into the interior of the primary electrolytic disinfection box 1 .

[0043] The water inlet pipe 8 includes a water inlet pipe 81, on which a manual valve 82, a water inlet pressure sensor 83, a solenoid valve 84 and a filter 85 are sequentially arranged. The filter 85 adopts a PP cotton filter with a filtration accuracy of 5μm to remove particulate impurities.

[0044] In this embodiment, a control cabinet 7 is also included, and the control cabinet 7 is used for overall control of the disinfection equipment.

[0045] Specifically, the control cabinet 7 is composed of a residual chlorine sensor, a programmable logic controller (PLC), and a human-machine interface.

[0046] A method for using a two-stage electrolysis and photocatalyst disinfection device, comprising the following steps:

[0047] Step 1: When the liquid level sensor 4 detects that the water level of the first-level electrolytic disinfection box 1 is lower than the low water level, the solenoid valve 84 opens the water inlet, and the PP cotton filter is used to filter the incoming water;

[0048] Step 2: After the liquid level sensor 4 detects that the water level in the primary electrolytic disinfection tank 1 has reached the high water level, the electrolysis control box 15 of the electrolytic cell 11 is energized to continuously electrolyze the water inside the electrolytic cell 11 to generate hypochlorous acid disinfectant;

[0049] Step 3: The disinfectant flows into the interior of the secondary photocatalyst circulation disinfection box 2 through the infusion tube 3. The water contacts the nano-titanium dioxide photocatalyst layer 21 inside the secondary photocatalyst circulation disinfection box 2 and is irradiated by the ultraviolet lamp 22. The photocatalytic reaction generates hydroxyl radicals, which continuously circulates and disinfects the water.

[0050] Step 4: The water treated by the secondary photocatalyst circulation disinfection box 2 is transported to the dental equipment 6 through the circulation pipe 5 for use. At the same time, the circulation pipe 5 circulates the water drawn out of the secondary photocatalyst circulation disinfection box 2 to the interior of the primary electrolytic disinfection box 1. After the disinfection is completed, the control cabinet 7 automatically switches to the circulation antibacterial mode to maintain the effective chlorine concentration of the disinfectant used in the dental equipment 6 at 0.5-5 mg / L.

[0051] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make some changes or modifications to equivalent embodiments using the technical contents disclosed above. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A two-stage electrolysis and photocatalyst disinfection equipment, characterized in that: The invention comprises a primary electrolytic disinfection box (1) and a secondary photocatalyst circulation disinfection box (2), wherein a liquid infusion pipe (3) is provided between the primary electrolytic disinfection box (1) and the secondary photocatalyst circulation disinfection box (2), and the liquid infusion pipe (3) is used to transport water inside the primary electrolytic disinfection box (1) to the inside of the secondary photocatalyst circulation disinfection box (2), and a liquid level sensor (4) is provided on one side of each of the primary electrolytic disinfection box (1) and the secondary photocatalyst circulation disinfection box (2), and the liquid level sensor (4) is used to at least monitor the liquid level of the primary electrolytic disinfection box (1). The invention relates to a method for measuring the liquid inside an electrolytic disinfection box (1) and a secondary photocatalyst circulation disinfection box (2), wherein a circulation pipe (5) is provided on one side of the secondary photocatalyst circulation disinfection box (2), and one end of the circulation pipe (5) is connected to the bottom of the primary electrolytic disinfection box (1), and a plurality of dental equipment (6) are connected to the circulation pipe (5). The top of the primary electrolytic disinfection box (1) is provided with a water inlet pipe (8), and the water inlet pipe (8) introduces clean water into the interior of the primary electrolytic disinfection box (1).

2. A two-stage electrolysis and photocatalyst disinfection equipment according to claim 1, characterized in that: It also includes a control cabinet (7), which is used for overall control of the disinfection equipment.

3. A two-stage electrolysis and photocatalyst disinfection equipment according to claim 2, characterized in that, The control cabinet (7) is composed of a residual chlorine sensor, a programmable logic controller (PLC), and a human-machine interaction interface.

4. A two-stage electrolysis and photocatalyst disinfection equipment according to claim 1, characterized in that: The first-level electrolytic disinfection box (1) is provided with an electrolytic cell (11) inside, and an anode (13) and a cathode (14) are provided inside the electrolytic cell (11). The anode (13) and the cathode (14) are connected to an electrolysis control box (15) located outside the first-level electrolytic disinfection box (1), and a drainage pipe (12) is provided on one side of the bottom of the first-level electrolytic disinfection box (1).

5. A two-stage electrolysis and photocatalyst disinfection equipment according to claim 4, characterized in that: The anode (13) is made of titanium plated with ruthenium and iridium, the cathode (14) is made of titanium, and the current density between the anode (13) and the cathode (14) is 10-20 mA / cm 2 The effective chlorine concentration of hypochlorous acid generated by electrolysis is 40-80 mg / L.

6. A two-stage electrolysis and photocatalyst disinfection equipment according to claim 1, characterized in that: The inner wall of the secondary photocatalyst circulation disinfection box (2) is coated with a nano titanium dioxide photocatalyst layer (21); a plurality of ultraviolet lamps (22) are arranged inside the secondary photocatalyst circulation disinfection box (2); and a wire tube (24) for laying wires is arranged above the ultraviolet lamps (22); a drain pipe 2 (23) is arranged on one side of the bottom of the secondary photocatalyst circulation disinfection box (2); and the wavelength of the ultraviolet lamp (22) is 254 nm.

7. A two-stage electrolysis and photocatalyst disinfection equipment according to claim 1, characterized in that: The liquid level sensor (4) comprises a mounting seat (41) fixed on the outer wall of the primary electrolytic disinfection box (1) or the secondary photocatalyst circulation disinfection box (2), and a connecting pipe (43) connected to the primary electrolytic disinfection box (1) or the secondary photocatalyst circulation disinfection box (2) is provided on the outer side of the mounting seat (41), a grating measuring ruler (42) is provided on the outer wall of one side of the mounting seat (41), and a light shield (44) is provided on the outer side of the connecting pipe (43).

8. A two-stage electrolysis and photocatalyst disinfection equipment according to claim 1, characterized in that: The circulation pipe (5) comprises a circulation pipe (51), on which a circulation pipe pressure sensor (52), a one-way valve (54), and a circulation pump (53) are provided. The circulation pump (53) is close to one end of the secondary photocatalyst circulation disinfection box (2), and a plurality of the dental equipment (6) are connected to the circulation pipe (51).

9. A two-stage electrolysis and photocatalyst disinfection equipment according to claim 1, characterized in that: The water inlet pipe (8) comprises a water inlet pipe (81), on which a manual valve (82), a water inlet pressure sensor (83), a solenoid valve (84) and a filter (85) are sequentially arranged, and the filter (85) is a PP cotton filter.

10. A method for using a dual-stage electrolysis and photocatalyst disinfection device, comprising the dual-stage electrolysis and photocatalyst disinfection device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: When the liquid level sensor (4) detects that the water level in the first-level electrolytic disinfection box (1) is lower than the low water level, the solenoid valve (84) opens to allow water to flow in, and at the same time, the PP cotton filter is used to filter the incoming water; Step 2: After the liquid level sensor (4) detects that the water level in the first-level electrolytic disinfection box (1) reaches the high water level, the electrolysis control box (15) of the electrolytic cell (11) is powered on to continuously electrolyze the water inside the electrolytic cell (11) to generate hypochlorous acid disinfectant; Step 3: The disinfectant flows into the interior of the secondary photocatalyst circulation disinfection box (2) through the infusion tube (3), and the water contacts the nano-titanium dioxide photocatalyst layer (21) inside the secondary photocatalyst circulation disinfection box (2). The water is irradiated by the ultraviolet lamp (22), and the photocatalytic reaction generates hydroxyl free radicals, which continuously disinfects and circulates to inhibit bacteria; Step 4: The water treated by the secondary photocatalyst circulation disinfection box (2) is transported to the dental equipment (6) through the circulation pipe (5) for use. At the same time, the circulation pipe (5) circulates the water drawn out of the secondary photocatalyst circulation disinfection box (2) to the interior of the primary electrolytic disinfection box (1).

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