A bath medicine liquid disinfecting and sterilizing device and a disinfecting and sterilizing method

Abstract

The application discloses a bath medicine liquid disinfection and sterilization device and method, and belongs to the technical field of disinfection and sterilization. The bath medicine liquid disinfection and sterilization device comprises a sterilization unit, the sterilization unit comprises a positive electrode plate and a negative electrode plate, the positive electrode plate and the negative electrode plate are connected with a high-voltage pulse electric field generator, the high-voltage pulse electric field generator provides a high-voltage pulse electric field for the sterilization unit through the positive electrode plate and the negative electrode plate, a plurality of liquid pipes for making the bath medicine liquid flow through the high-voltage pulse electric field are arranged between the positive electrode plate and the negative electrode plate, a disinfection section for prolonging the length of the liquid pipe is arranged at the middle part of the liquid pipe, and a turbulence structure is arranged in the disinfection section. The bath medicine liquid disinfection and sterilization device and method can solve the problems that the existing disinfection and sterilization device is prone to causing the temperature of the medicine liquid to rise, affecting the medicinal property, and the disinfection and sterilization effect is poor.

Description

Technical Field

[0001] This invention relates to the field of disinfection and sterilization technology, and in particular to a bath disinfection and sterilization device and method. Background Technology

[0002] As a functional liquid that comes into direct contact with human skin, bath medicine liquids must strictly meet sterility standards for microbial indicators (such as bacteria, fungi, viruses, etc.). If the microbial levels exceed the standard, it may not only cause safety risks such as skin infection and inflammation, but may also destroy the active ingredients in the medicine liquid (such as plant extracts, enzymes, peptides, etc.), leading to a decrease or failure of efficacy. Therefore, disinfection and sterilization are the core links in the production, storage and use of bath medicine liquids.

[0003] Currently, the industry's disinfection and sterilization technologies for bath solutions are mainly divided into three categories: thermal disinfection, chemical disinfection, and conventional physical disinfection. Thermal disinfection (such as boiling and high-temperature steam sterilization) is the traditional mainstream method, which achieves sterilization by destroying the protein structure of microorganisms through high temperatures (usually above 60°C). However, bath solutions generally contain heat-sensitive active ingredients, and high temperatures can easily cause these ingredients to denature and degrade, directly resulting in loss of efficacy. It may also cause quality problems such as darkening of the solution's color and alteration of its odor. Furthermore, thermal disinfection requires extremely high uniformity of heating; insufficient local temperature creates sterilization dead zones, while excessive heating further exacerbates component damage, resulting in poor treatment effects on the bath solution. Chemical disinfection achieves sterilization by adding chemical reagents such as chlorine-containing disinfectants, peroxides, and quaternary ammonium salts. Although it is simple to operate and low in cost, chemical reagents are prone to leave residues in bath solutions, which may cause irritation, allergies, and other adverse reactions when in direct contact with the skin. In addition, some chemical reagents may react with the active ingredients in the bath solution to generate toxic and harmful byproducts, which not only destroy the efficacy of the medicine but also pose a potential threat to human health. Moreover, controlling the residue level is difficult and cannot meet the requirements of medical-grade or high-safety standards for bath solutions. Conventional physical disinfection (such as ultraviolet disinfection and ordinary high-voltage pulsed electric field disinfection) can avoid chemical residues and thermal damage. However, ultraviolet disinfection relies on the destruction of microbial nucleic acids by ultraviolet light. If the bath solution contains plant pigments, suspended particles, or other ingredients, the penetration ability of ultraviolet light will be greatly reduced, and it can only act on the surface of the solution. Microorganisms inside the solution are difficult to be effectively killed, resulting in poor sterilization uniformity. Summary of the Invention

[0004] The purpose of this invention is to provide a bath disinfection and sterilization device and method, which solves the problems of existing disinfection and sterilization devices that easily cause the temperature of the bath liquid to rise, affecting the medicinal properties and resulting in poor disinfection and sterilization effects.

[0005] To achieve the above objectives, the present invention provides a bath disinfection and sterilization device, comprising a sterilization unit, which includes a positive electrode plate and a negative electrode plate. Both the positive and negative electrode plates are connected to a high-voltage pulse electric field generator. The high-voltage pulse electric field generator provides a high-voltage pulse electric field to the sterilization unit through the positive and negative electrode plates. A plurality of liquid pipes are arranged between the positive and negative electrode plates to allow the bath liquid to flow through the high-voltage pulse electric field. A disinfection section extending the length of the liquid pipe is provided in the middle of the liquid pipe, and a turbulence-inducing structure is provided inside the disinfection section.

[0006] Preferably, the disinfection section has an inlet section at the front end and an outlet section at the rear end. The disinfection section includes several periodically arranged V-shaped structures. Adjacent V-shaped structures are connected by a smooth arc transition, and the two sides of the V-shaped structure are connected by a smooth arc transition. Both the inlet section and the outlet section are located in the middle of the V-shaped structure.

[0007] Preferably, the included angle between the two sides of the V-shaped structure is 40°-70°, the side length of the V-shaped structure is 30cm-40cm, and the radius of the center line of the arc of the V-shaped structure is 8cm-12cm.

[0008] Preferably, the liquid tube is a heat-resistant quartz tube with an inner diameter of 8mm-12mm and a wall thickness of 1mm-2mm, and the length of the liquid tube is 350cm-450cm.

[0009] Preferably, the turbulence structure includes turbulence columns, which are distributed in a circumferential array on the inner wall of the disinfection section. The turbulence columns in adjacent rows are staggered. The diameter of the turbulence columns is 0.3mm-0.5mm and the height is 0.3mm-0.5mm.

[0010] Preferably, a temperature sensor for detecting the temperature of the bath solution is provided at the outlet of the liquid pipe, the inlet section of the liquid pipe is connected to the main inlet pipe, the main inlet pipe is connected to the liquid pump through a filter unit, and the liquid pump, the high-voltage pulse electric field generator, and the temperature sensor are all electrically connected to the controller.

[0011] Preferably, the filtration unit includes a primary filter and a secondary filter connected in series, wherein the primary filter is a 50μm PP filter cotton and the secondary filter is a 0.22μm PES filter.

[0012] A disinfection and sterilization method for the above-mentioned bath disinfection and sterilization device includes the following steps: S1. The liquid pump sends the bath solution into the filtration unit. It first passes through the primary filter of the filtration unit for preliminary filtration, and then through several secondary filters for further filtration. S2. The filtered bath solution enters several liquid tubes between the positive and negative electrode plates through the main inlet pipe. The bath solution flows in the liquid tubes. The high-voltage pulse electric field generator provides a high-voltage pulse electric field to the sterilization unit to disinfect the bath solution flowing in the liquid tubes. The turbulence column in the liquid tubes disrupts the laminar flow state between the bath solution and the tube wall, so as to uniformly disinfect the bath solution. The temperature sensor monitors the temperature of the bath solution at the outlet of the liquid tube in real time. The controller controls the temperature of the bath solution by adjusting the electric field strength of the high-voltage pulse electric field generator and the flow rate of the bath solution. S3. After disinfection, the bath solution is discharged through the outlet of the liquid pipe and then pumped back into the disinfection and sterilization device to circulate the bath solution.

[0013] Preferably, in step S2, the high-voltage pulse electric field generator provides the sterilization unit with an exponentially decaying pulse width of 1μs-5μs and a pulse frequency of 100Hz-1000Hz.

[0014] Preferably, in step S2, the temperature of the bath solution at the outlet of the liquid pipe does not exceed 50°C, and the viscosity of the bath solution is 1-30. .

[0015] The advantages and positive effects of the bath solution disinfection and sterilization device and method described in this invention are as follows: This invention uses a high-voltage pulsed electric field to disinfect and sterilize the bath solution. While ensuring the disinfection and sterilization effect of the bath solution, the circulating flow reduces the temperature of the bath solution, retains the activity of the effective components in the bath solution, and ensures the efficacy of the bath solution. Multiple parallel liquid pipes are arranged between the positive and negative electrode plates, which helps to increase the flow rate of the bath solution and improve the treatment efficiency. The periodically V-shaped arrangement of the liquid pipes helps to ensure the smooth flow of the bath solution, avoids stagnation, and improves the treatment effect. The turbulence columns inside the liquid pipes can effectively disrupt the laminar flow distribution of the solution, allowing the bath solution with a slower flow rate near the pipe wall to mix thoroughly with the bath solution with a faster flow rate in the center, improving the uniformity of the mixture and the uniformity and thoroughness of disinfection and sterilization. The small size of the turbulence columns disrupts the laminar flow distribution of the bath solution without causing excessive flow resistance, ensuring the treatment efficiency of the bath solution.

[0016] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the sterilization unit structure according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the liquid pipe arrangement structure according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the liquid tube structure according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the internal structure of the liquid tube according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the cross-sectional structure of the liquid pipe according to an embodiment of the present invention.

[0018] Figure Labels 1. Liquid pump; 2. Filtration unit; 21. Primary filter; 22. Secondary filter; 3. Sterilization unit; 31. Positive electrode plate; 32. Negative electrode plate; 33. Liquid pipe; 34. Main inlet pipe; 35. Inlet section; 36. Outlet section; 37. Disinfection section; 38. Turbulence column; 4. High-voltage pulse electric field generator. Detailed Implementation

[0019] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] In this application, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. In case of any inconsistency, the meaning set forth in this specification or derived from the content described herein shall prevail. Furthermore, the terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit the scope of this application.

[0021] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0022] like Figure 1 , Figure 2As shown, a bath solution disinfection and sterilization device includes a sterilization unit 3, which disinfects and sterilizes the bath solution. The sterilization unit 3 includes opposing positive and negative electrode plates 31 and 32, both of which are connected to a high-voltage pulse electric field generator 4. The positive and negative electrode plates 31 and 32 are made of titanium plated with platinum. The high-voltage pulse electric field generator 4 provides a high-voltage pulse electric field to the sterilization unit 3 through the positive and negative electrode plates 31 and 32, forming a sterilization space between them for disinfecting the bath solution. Several liquid pipes 33 are arranged between the positive and negative electrode plates 31 and 32 to allow the bath solution to flow through the high-voltage pulse electric field, thus achieving disinfection and sterilization of the bath solution. The distance between the positive and negative electrode plates 31 and 32 is slightly larger than the outer diameter of the liquid pipes 33.

[0023] A temperature sensor is installed at the outlet of the sterilization unit 3 to detect the temperature of the bath solution. The temperature sensor monitors the temperature of the bath solution at the outlet in real time, controlling the temperature within a set range. The inlet of the sterilization unit 3 is connected to the main inlet pipe 34, which is connected to the liquid pump 1 via the filter unit 2. The filter unit 2 includes a primary filter 21 and a secondary filter 22 connected in series. The primary filter 21 is a 50μm PP filter cotton, and the secondary filter 22 is a 0.22μm PES filter. Two secondary filters 22 are provided. The liquid pump 1, the high-voltage pulse electric field generator 4, and the temperature sensor are all electrically connected to the controller. Based on the temperature of the bath solution detected by the temperature sensor, the controller adjusts the electric field strength of the high-voltage pulse electric field generator 4 and the duty cycle of the liquid pump 1 in real time, thereby controlling the temperature of the bath solution at the outlet of the sterilization unit 3 to prevent the bath solution from becoming too hot and damaging its properties.

[0024] like Figure 3 , Figure 4 As shown, a disinfection section 37 extending the length of the liquid pipe 33 is provided in the middle of the liquid pipe 33, and a turbulence structure is provided inside the disinfection section 37. The disinfection section 37 includes several periodically arranged V-shaped structures, with adjacent V-shaped structures connected by a smooth arc transition. The two sides of the V-shaped structures are also connected by a smooth arc transition. The included angle between the two sides of the V-shaped structure is 40°-70°, the side length of the V-shaped structure is 30cm-40cm, and the radius of the center line of the arc of the V-shaped structure is 8cm-12cm. The V-shaped structure of the liquid pipe 33 helps to prolong the residence time of the bath solution in the high-voltage pulse electric field, improve the disinfection and sterilization effect of the bath solution, and also helps to reduce the footprint of the sterilization unit 3.

[0025] The disinfection section 37 has an inlet section 35 at its front end and an outlet section 36 at its rear end, both located in the middle of the V-shaped structure. Both inlet and outlet sections 35 and 36 are straight sections, smoothly connected to the disinfection section 37 via inclined and arc-shaped sections. The liquid tube 33 is a heat-resistant quartz tube with an inner diameter of 8mm-12mm and a wall thickness of 1mm-2mm, and a length of 350cm-450cm. The corners of the liquid tube 33 are smoothly connected via arc-shaped sections, effectively reducing the flow resistance of the bath solution, ensuring smooth flow, and preventing stagnation that could affect the properties of the bath solution.

[0026] like Figure 5 , Figure 6 As shown, the turbulence structure includes turbulence columns 38, which are arranged in a circumferential array on the inner wall of the disinfection section 37. Adjacent rows of turbulence columns 38 are staggered. The diameter and height of the turbulence columns 38 are 0.3mm-0.5mm. The staggered arrangement of the turbulence columns 38 effectively disrupts the laminar flow distribution of the disinfectant solution, allowing the slower-flowing solution near the pipe wall to mix thoroughly with the faster-flowing solution in the center, improving the uniformity of the solution mixing and enhancing the uniformity and thoroughness of disinfection. The small size of the turbulence columns 38 ensures that while disrupting the laminar flow distribution of the disinfectant solution, it does not create excessive flow resistance, thus guaranteeing the treatment efficiency of the disinfectant solution.

[0027] The disinfection and sterilization method of the above-mentioned bath disinfection and sterilization device includes the following steps: S1. Pump 1 delivers the bath solution into filter unit 2. First, it undergoes preliminary filtration through a primary filter 21 (50μm PP filter cotton) to remove large particles of impurities. Then, it passes through two secondary filters 22 (0.22μm PES filters) for further filtration. The filtered bath solution is purer, and impurities are prevented from settling in the liquid pipe 33, which could cause blockage and affect the treatment efficiency of the bath solution.

[0028] S2. The filtered bath solution enters several liquid pipes 33 between the positive electrode plate 31 and the negative electrode plate 32 through the main inlet pipe 34. The simultaneous treatment of the bath solution by several liquid pipes 33 improves the efficiency of disinfection and sterilization. The bath solution flows within the liquid pipes 33, and the high-voltage pulse electric field generator 4 provides a high-voltage pulse electric field to the sterilization unit 3, disinfecting the bath solution flowing in the liquid pipes 33. The turbulence column 38 in the liquid pipes 33 disrupts the laminar flow between the bath solution and the pipe wall, ensuring uniform disinfection and sterilization. A temperature sensor monitors the temperature of the bath solution at the outlet of the liquid pipes 33 in real time, and the controller adjusts the electric field strength of the high-voltage pulse electric field generator 4 and the flow rate of the bath solution to control the temperature of the bath solution.

[0029] High-voltage pulse electric field generator 4 provides an electric field strength of 10 -50 An internally continuously adjustable solid-state Marx generator is used. A high-voltage pulse electric field generator 4 provides the sterilization unit 3 with an exponentially decaying pulse width of 1μs-5μs and a pulse frequency of 100Hz-1000Hz. The temperature of the bath solution at the outlet of the liquid pipe 33 does not exceed 50℃, ensuring the sterilization effect of the bath solution while reducing the damage to the properties of the bath solution caused by temperature. The viscosity of the bath solution is 1-30. .

[0030] S3. After disinfection, the bath solution is discharged through the outlet of the liquid pipe 33 and then sent back into the disinfection and sterilization device by the liquid pump 1 to circulate the bath solution.

[0031] The bath solution disinfection and sterilization device described in this invention can achieve the disinfection and sterilization treatment requirements of more than 500L / h of bath solution.

[0032] Example 1 Solids content 2%, viscosity 8 The 25L bath solution, after being filtered through a primary filter 21 (50μm PP filter cotton) and a secondary filter 22 (0.22μm PES filter cotton), enters the sterilization unit 3. The sterilization unit 3 has an electric field strength of 30kV / cm, a pulse width of 2μs, a frequency of 600Hz, and a flow rate of 600 ml / s per liquid tube 33. After circulating for 15 minutes, a sample of the bath solution at the outlet of tube 33 was taken for testing. The total bacterial count in the bath solution was 5.8 × 10⁻⁶. 5 Reduced to <10 The outlet temperature of the bath solution was 42.3℃, and the total polysaccharide and total flavonoid content in the bath solution decreased by 2.1% and 1.8% respectively compared with the original solution. It is evident that the disinfection and sterilization device described in this embodiment has a very good disinfection and sterilization effect, high processing efficiency, and minimal loss of effective components in the bath solution.

[0033] Example 2 Three liquid tubes (33) were connected in parallel to disinfect the bath solution, with a total flow rate of 1.8 L / min. The electric field strength was reduced to 20 kV / cm, and the other parameters were the same as in Example 1. 60 L of bath solution was treated, the final temperature was 45.6℃, and the total bacterial count was <1 CFU / mL.

[0034] Therefore, the bath solution disinfection and sterilization device and method described in this invention can solve the problem that existing disinfection and sterilization devices easily cause the temperature of the solution to rise, affecting the medicinal properties and resulting in poor disinfection and sterilization effects.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A bath disinfection and sterilization device, characterized in that: It includes a sterilization unit, which includes a positive electrode plate and a negative electrode plate. Both the positive and negative electrode plates are connected to a high-voltage pulse electric field generator. The high-voltage pulse electric field generator provides a high-voltage pulse electric field to the sterilization unit through the positive and negative electrode plates. Several liquid pipes are arranged between the positive and negative electrode plates to allow the bath solution to flow through the high-voltage pulse electric field. A disinfection section is provided in the middle of the liquid pipe to extend the length of the liquid pipe. The disinfection section is equipped with a turbulence structure.

2. The bath disinfection and sterilization device according to claim 1, characterized in that: The disinfection section has an inlet section at the front end and an outlet section at the rear end. The disinfection section includes several periodically arranged V-shaped structures. Adjacent V-shaped structures are connected by a smooth arc transition, and the two sides of the V-shaped structure are connected by a smooth arc transition. Both the inlet section and the outlet section are located in the middle of the V-shaped structure.

3. The bath disinfection and sterilization device according to claim 2, characterized in that: The included angle between the two sides of the V-shaped structure is 40°-70°, the side length of the V-shaped structure is 30cm-40cm, and the radius of the center line of the arc of the V-shaped structure is 8cm-12cm.

4. The bath disinfection and sterilization device according to claim 3, characterized in that: The liquid tube is a heat-resistant quartz tube with an inner diameter of 8mm-12mm and a wall thickness of 1mm-2mm, and the length of the liquid tube is 350cm-450cm.

5. The bath disinfection and sterilization device according to claim 4, characterized in that: The turbulence structure includes turbulence columns, which are distributed in a circumferential array on the inner wall of the disinfection section. The turbulence columns in adjacent rows are staggered. The diameter of the turbulence columns is 0.3mm-0.5mm and the height is 0.3mm-0.5mm.

6. The bath disinfection and sterilization device according to claim 5, characterized in that: A temperature sensor for detecting the temperature of the bath solution is installed at the outlet of the liquid pipe. The inlet section of the liquid pipe is connected to the main inlet pipe, which is connected to the liquid pump through a filter unit. The liquid pump, the high-voltage pulse electric field generator, and the temperature sensor are all electrically connected to the controller.

7. The bath disinfection and sterilization device according to claim 6, characterized in that: The filtration unit includes a primary filter and a secondary filter connected in series. The primary filter is a 50μm PP filter cotton, and the secondary filter is a 0.22μm PES filter.

8. A disinfection and sterilization method for the bath solution disinfection and sterilization device according to claim 7, characterized in that, Includes the following steps: S1. The liquid pump sends the bath solution into the filtration unit. It first passes through the primary filter of the filtration unit for preliminary filtration, and then through several secondary filters for further filtration. S2. The filtered bath solution enters several liquid tubes between the positive and negative electrode plates through the main inlet pipe. The bath solution flows in the liquid tubes. The high-voltage pulse electric field generator provides a high-voltage pulse electric field to the sterilization unit to disinfect the bath solution flowing in the liquid tubes. The turbulence column in the liquid tubes disrupts the laminar flow state between the bath solution and the tube wall, so as to uniformly disinfect the bath solution. The temperature sensor monitors the temperature of the bath solution at the outlet of the liquid tube in real time. The controller controls the temperature of the bath solution by adjusting the electric field strength of the high-voltage pulse electric field generator and the flow rate of the bath solution. S3. After disinfection, the bath solution is discharged through the outlet of the liquid pipe and then pumped back into the disinfection and sterilization device to circulate the bath solution.

9. The disinfection and sterilization method of the bath solution disinfection and sterilization device according to claim 8, characterized in that: In S2, the high-voltage pulse electric field generator provides the sterilization unit with an exponentially decaying pulse width of 1μs-5μs and a pulse frequency of 100Hz-1000Hz.

10. The disinfection and sterilization method of the bath solution disinfection and sterilization device according to claim 9, characterized in that: In step S2, the temperature of the bath solution at the outlet of the liquid pipe does not exceed 50°C, and the viscosity of the bath solution is 1-30. .

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