CN219049671U

CN219049671U - Device for monitoring resistance of indicator for ethylene oxide sterilization

Info

Publication number: CN219049671U
Application number: CN202223536886.0U
Authority: CN
Inventors: 刘金红; 周伟伟; 秦绿廷
Original assignee: Shenzhen Jinpai Medical Packaging Sterilization Service Co ltd
Current assignee: Shenzhen Jinpai Medical Packaging Sterilization Service Co ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-05-23
Anticipated expiration: 2032-12-28

Abstract

The utility model discloses a device for monitoring the resistance of an indicator for ethylene oxide sterilization, which comprises a sterilization box and a controller, and is characterized in that a sensor assembly is arranged in the sterilization box, the sterilization box is connected with a heater, a humidifier, a vacuum pump, a nitrogen source, an ethylene oxide source and a circulating fan through pipelines, and an automatic control valve is arranged on the pipeline and is electrically connected with the controller; the sterilizing chamber comprises an inner shell and an outer shell, and the sensor assembly is arranged in a cavity of the inner shell; the outer wall of the inner shell is provided with a heating pipe which is connected with the heater. Through setting up sensor assembly, can monitor temperature, humidity, pressure and the concentration of ethylene oxide in the inner shell simultaneously, and directly in the inner shell of sterilization case, the testing result is accurate to be convenient for control sterilization environment and sterilization process according to the testing result, thereby make this resistance check out test set can accurately detect the sterilization effect under the different sterilization environment.

Description

Device for monitoring resistance of indicator for ethylene oxide sterilization

Technical Field

The utility model relates to the technical field of ethylene oxide sterilization, in particular to equipment for monitoring resistance of an indicator for ethylene oxide sterilization.

Background

The ethylene oxide gas has strong bactericidal power and broad bactericidal spectrum, can kill various microorganisms including bacterial spores, and belongs to a bactericide. Ethylene oxide does not damage sterilized articles and has strong penetration, so that most articles which are not suitable for sterilization by the common method can be sterilized by ethylene oxide. For example, electronic instruments, optical instruments, medical instruments, books, documents, fur, cotton, chemical fibers, plastic products, wooden products, ceramics, metal products, endoscopes, dialyzers, disposable medical supplies, and the like.

The prior ethylene oxide sterilizing equipment is usually filled with ethylene oxide into a sterilizing box, so that materials in the sterilizing box are sterilized in an ethylene oxide atmosphere, as disclosed in Chinese patent application No. CN202021471907.3, the ethylene oxide sterilizing and resolving integrated machine comprises a sterilizing cabinet, an electric cabinet, a circulating water type vacuum pump, an ethylene oxide decomposition box, an ethylene oxide vaporization box, an ethylene oxide gas tank and an air filtering filter element, wherein the bottom of the ethylene oxide vaporization box is communicated with a second heat source input pipe, the top of the ethylene oxide vaporization box is communicated with a second heat source output pipe, the upper end and the lower end of one side of the ethylene oxide decomposition box are respectively communicated with a water outlet pipe and a water outlet pipe, a first connecting pipe is communicated between the ethylene oxide gas tank and the ethylene oxide vaporization box, a second connecting pipe is communicated between the top of the first connecting pipe and the sterilizing cabinet, a third connecting pipe is communicated between the ethylene oxide decomposition box and the circulating water type vacuum pump, a fourth connecting pipe is communicated between the circulating water type vacuum pump and the sterilizing cabinet, and a fifth connecting pipe is communicated between the air filtering filter element and the sterilizing cabinet. However, there are some disadvantages to the above-described schemes: 1. the first temperature sensor is arranged on the inner side of the outer wall, so that the temperature in the sterilization chamber cannot be accurately monitored; 2. through the heat source chamber heat supply between to inner bag and the outer wall, heat partly flows to the inner bag, and partly flows to the outer wall, causes the heat loss more, and the outer wall is heated the back, scalds personnel easily.

The device for monitoring the resistance of the indicator is essentially a sterilization effect detection device, has a composition similar to that of the sterilization device, needs to accurately control the sterilization environment and the sterilization effect, monitors the sterilization environment and the sterilization effect, and obviously does not meet the use requirements.

The above disadvantages are to be improved.

Disclosure of Invention

In order to solve the problems that the sterilization environment and the sterilization effect are difficult to monitor, so that the sterilization environment and the sterilization effect are difficult to control, the ethylene oxide sterilization device cannot be used as a resistance instrument, and more heat loss is caused, the utility model provides equipment for monitoring the resistance of an indicator for ethylene oxide sterilization.

The technical scheme of the utility model is as follows:

the device for monitoring the resistance of the indicator for ethylene oxide sterilization comprises a sterilization box and a controller, and is characterized in that a sensor assembly is arranged in the sterilization box, the sterilization box is connected with a heater, a humidifier, a vacuum pump, a nitrogen source, an ethylene oxide source and a circulating fan through pipelines, and an automatic control valve is arranged on the pipeline and is electrically connected with the controller; the sterilization box comprises an inner shell and an outer shell, the sensor assembly is arranged in a cavity of the inner shell, and the sensor assembly comprises a temperature sensor, a humidity sensor, a pressure sensor and an ethylene oxide concentration sensor; the outer wall of the inner shell is provided with a heating pipe, and the heating pipe is connected with the heater.

Further, the temperature sensor, the humidity sensor, the pressure sensor, and the ethylene oxide concentration sensor are all provided in plurality, and are provided at intervals in the inner case.

Further, the automatic control valve is an electromagnetic valve or a pneumatic valve.

Further, the heater is a steam heater, hot air of the steam heater is led to one end of the heating pipe, and cold air at the other end of the heating pipe is led to the steam heater.

Further, the heater is an electric heater, an electric heating wire is arranged in the heating pipe, and the electric heating wire is electrically connected with the electric heater.

Further, an air outlet of the vacuum pump is connected with a sewage draining bucket.

Further, a gasifier is arranged between the ethylene oxide gas source and the sterilization box, the ethylene oxide gas source is connected with the sterilization box through the gasifier, the gasifier is used for gasifying ethylene oxide, temperature sensors are further arranged on the gasifier and on pipelines between the gasifier and the sterilization box, and the temperature sensors are used for monitoring the temperature of the gasifier and the temperature of gasified ethylene oxide.

Further, a safety valve is connected to the sterilization box.

Further, the sterilizing box is also connected with a vent valve.

Further, the sterilizing box is also connected with an air compressor.

The utility model according to the scheme has the beneficial effects that:

1. according to the equipment for monitoring the resistance of the indicator for ethylene oxide sterilization, provided by the utility model, the sensor assembly is arranged, so that the temperature, the humidity, the pressure and the concentration of ethylene oxide in the inner shell can be monitored simultaneously, and the detection result is accurate directly in the inner shell of the sterilization box, so that the sterilization environment and the sterilization process can be controlled conveniently according to the detection result, and the resistance detection equipment can accurately detect the sterilization effect under different sterilization environments.

2. According to the equipment for monitoring the resistance of the indicator for ethylene oxide sterilization, disclosed by the utility model, the heating pipe is arranged on the inner shell, so that heat transfer to the cavity of the inner shell is facilitated, heat loss is reduced, a gap exists between the heating pipe and the outer shell, heat transfer is reduced, personnel are prevented from contacting the outer shell, and the safety is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an electric heater according to the present utility model;

FIG. 2 is a schematic diagram of a first portion of a control circuit according to the present utility model;

FIG. 3 is a schematic diagram of a second portion of the control circuit of the present utility model;

FIG. 4 is a schematic diagram of a third portion of the control circuit according to the present utility model;

FIG. 5 is a schematic diagram of a fourth portion of the control circuit of the present utility model;

FIG. 6 is a schematic diagram of a fifth portion of the control circuit according to the present utility model;

FIG. 7 is a schematic diagram of a sixth portion of the control circuit of the present utility model;

fig. 8 is a schematic view of a structure of the present utility model using a steam heater.

Wherein, each reference sign in the figure: 1. a sterilization box; 101. an inner case; 102. a housing; 2. a sensor assembly; 3. a heater; 301. heating pipes; 4. a humidifier; 5. a vacuum pump; 6. a nitrogen source; 7. an ethylene oxide gas source; 8. a circulating fan; 9. a sewage discharge barrel; 10. a gasifier; 11. a safety valve; 12. a blow-off valve; 13. an air compressor; 14. an automatic control valve; 15. and a controller.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It will be understood that when an element is referred to as being "mounted" or "disposed" or "connected" to another element, it can be directly or indirectly on the other element. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are directions or positions based on the drawings, and are merely for convenience of description and are not to be construed as limiting the present technical solution. The terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "multiple" is two or more, unless explicitly defined otherwise. The meaning of "a number" is one or more than one, unless specifically defined otherwise.

As shown in fig. 1 to 7, an apparatus for monitoring resistance of an indicator of ethylene oxide sterilization according to an example of the present utility model includes a sterilization chamber 1 and a controller 15, wherein a sensor assembly 2 is disposed inside the sterilization chamber 1, the sterilization chamber 1 is connected with a heater 3, a humidifier 4, a vacuum pump 5, a nitrogen source 6, an ethylene oxide gas source 7 and a circulating fan 8 through a pipeline, and an automatic control valve 14 is disposed on the pipeline, and the automatic control valve 14 is electrically connected with the controller 15; the sterilization case 1 includes an inner case 101 and an outer case 102, and a sensor assembly 2 is provided in a chamber of the inner case 101, the sensor assembly 2 including a temperature sensor, a humidity sensor, a pressure sensor, and an ethylene oxide concentration sensor; the outer wall of the inner casing 101 is provided with a heating pipe 301, and the heating pipe 301 is connected to the heater 3.

Placing the indicator into a sterilization system, and controlling the heater 3 to heat the sterilization box 1 by the controller 15, wherein the temperature sensor detects that the temperature inside the sterilization box 1 reaches a preset temperature and then keeps the temperature; then the controller 15 controls the vacuum pump 5 to pump out the air in the sterilization box 1, and when the pressure sensor detects that the vacuum degree in the sterilization box 1 is smaller than the preset vacuum degree, the pressure is maintained, and the air tightness of the sterilization box 1 can be detected; the controller 15 controls the humidifier 4 to humidify the sterilization box 1, and when the humidity sensor detects that the humidity difference before and after humidification reaches a preset value, the humidification is performed; the controller 15 controls the automatic control valve 14 between the ethylene oxide gas source 7 and the sterilization box 1 to be opened, so that the ethylene oxide gas is filled into the sterilization box 1; after the pressure sensor detects that the pressure difference before and after dosing reaches a set value, the controller 15 controls the heater 3 to heat the sterilization box 1, when the temperature sensor detects that the temperature inside the sterilization box 1 reaches the set sterilization temperature, the controller 15 controls the circulating fan 8 to work, so that the ethylene oxide circularly flows in the sterilization box 1, the ethylene oxide fully contacts with an indicator to perform sterilization operation, after reaching a preset sterilization time, the vacuum pump 5 is controlled to pump out the ethylene oxide in the sterilization box 1, when the vacuum degree reaches the cleaning vacuum degree, the nitrogen source 6 is opened, nitrogen is filled into the sterilization box 1, after a certain amount of nitrogen is filled, the air pressure is increased to the pressure at which the nitrogen valve is closed, the vacuum pump 5 pumps out the air in the sterilization box 1 again, after the circulation is performed for several times, the concentration of the ethylene oxide in the sterilization box 1 is reduced to be within a safe range, and the circulating fan 8 and the ethylene oxide in a pipeline need to be started to clean after the nitrogen is filled in the process of cleaning circulation. In addition, the nitrogen can replace the ethylene oxide, and the air in the sterilization box 1 can be replaced by the nitrogen before the ethylene oxide is filled, so that the safety can be further ensured. And after the cleaning is finished, taking out the indicator to finish the resistance test.

The utility model can monitor the temperature, humidity, pressure and concentration of ethylene oxide in the inner shell 101 at the same time by arranging the sensor component 2, and the detection result is accurate in the inner shell 101 of the sterilization box 1, thereby being convenient for controlling the sterilization environment and the sterilization process according to the detection result, and further enabling the resistance detection equipment to accurately detect the sterilization effect under different sterilization environments. In addition, the heating pipe 301 is in direct contact with the inner shell 101, so that heat transfer to the cavity of the inner shell 101 is facilitated, heat loss is reduced, a gap exists between the heating pipe 301 and the outer shell 102, heat transfer is reduced, personnel are prevented from being scalded when contacting the outer shell 102, and safety is improved.

In a preferred embodiment, the temperature sensor, the humidity sensor, the pressure sensor, and the ethylene oxide concentration sensor are each provided in plurality and are disposed at intervals in the inner case 101. Through setting up different grade type's sensor and being provided with a plurality ofly, can detect the inside different region of sterilization case 1 on the one hand, evaluation testing result that can be more accurate for testing result is more close the inside real condition of sterilization case 1, thereby more accurate control sterilization environment, makes the resistance detection's result more accurate.

In a preferred embodiment, the circulating fan 8 is a magnetic fan, which has good explosion-proof performance, and ethylene oxide is a flammable and explosive toxic gas, so that the circulating fan has high safety when blowing the ethylene oxide to circularly flow in the sterilization box 1.

In a preferred embodiment, the automatic control valve 14 is a solenoid valve or a pneumatic valve. The control is convenient, the response is faster, and the sterilization environment and the sterilization process are convenient to adjust.

In a preferred embodiment, as shown in fig. 1, the heater 3 is an electric heater, and a heating wire is disposed in the heating tube 301 and electrically connected to the electric heater. As shown in fig. 8, the heater 3 is a steam heater, hot air of the steam heater is led to one end of the heating pipe 301, and cool air of the other end of the heating pipe 301 is led to the steam heater. The type of the heater 3 is conveniently selected according to the actual situation, and the heater 3 can heat the gasifier 10 at the same time.

In a preferred embodiment, as shown in fig. 1, the air outlet of the vacuum pump 5 is connected to a waste tub 9. The vacuum pump 5 pumps the gas in the sterilization box 1 into the blow-down barrel 9 for collection, prevents the escape of waste gas, especially ethylene oxide gas, ensures the health of production personnel, prevents the pollution to the environment, and ensures the environment-friendly production process.

As shown in fig. 1, in a preferred embodiment, a vaporizer 10 is disposed between the ethylene oxide gas source 7 and the sterilization tank 1, the ethylene oxide gas source 7 is connected to the sterilization tank 1 through the vaporizer 10, the vaporizer 10 is used for vaporizing ethylene oxide, and temperature sensors are further disposed on the vaporizer 10 and on the piping between the vaporizer 10 and the sterilization tank 1, and the temperature sensors are used for monitoring the temperature of the vaporizer 10 and the temperature of the vaporized ethylene oxide. The ethylene oxide gas source 7 is generally filled in an ethylene oxide medicine bottle, and when medicine is added, ethylene oxide in the medicine bottle is heated and gasified and then led to the sterilizing box 1, and the temperature of the gasifier 10 is monitored through the temperature sensor, so that the temperature of the ethylene oxide is controlled, the ethylene oxide is prevented from being lower, the gasification is insufficient, or the explosion is prevented from being caused by overhigh temperature. And a temperature sensor is arranged on the pipeline to monitor the gasified ethylene oxide, so that the temperature of the medicine is convenient to control, the sterilization environment is controlled, and the detection accuracy is improved.

As shown in fig. 1, in a preferred embodiment, a safety valve 11 is connected to the sterilization chamber 1. When the pressure in the sterilization box 1 exceeds the upper pressure limit set by the safety valve 11, the safety valve 11 is automatically opened to release the pressure in the sterilization box 1, so that the pressure in the sterilization box 1 is prevented from being too high to ensure the ethylene oxide mode, and the safety of equipment is further improved.

In a preferred embodiment, as shown in fig. 1, the sterilization chamber 1 is further connected with a blow-off valve 12. After the ethylene oxide is replaced by the nitrogen, when the vacuum degree in the sterilization box 1 reaches the cleaning vacuum degree, the vent valve 12 is opened, air is filled into the sterilization box 1 by utilizing negative pressure, the sterilization box 1 can be further cleaned by matching with the vacuum pump 5, and after cleaning is finished, the air pressure inside and outside the sterilization box 1 can be balanced by opening the vent valve 12, so that the sterilization box is convenient to open. The sterilization box 1 is also connected to an air compressor 13. The sterilization box 1 can be actively filled with gas for further cleaning and balancing the internal and external air pressure.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The device for monitoring the resistance of the indicator for ethylene oxide sterilization comprises a sterilization box and a controller, and is characterized in that a sensor assembly is arranged in the sterilization box, the sterilization box is connected with a heater, a humidifier, a vacuum pump, a nitrogen source, an ethylene oxide source and a circulating fan through pipelines, and an automatic control valve is arranged on the pipeline and is electrically connected with the controller;

the sterilization box comprises an inner shell and an outer shell, the sensor assembly is arranged in a cavity of the inner shell, and the sensor assembly comprises a temperature sensor, a humidity sensor, a pressure sensor and an ethylene oxide concentration sensor;

the outer wall of the inner shell is provided with a heating pipe, and the heating pipe is connected with the heater.

2. An apparatus for monitoring the resistance to an indicator of ethylene oxide sterilization as claimed in claim 1, wherein said temperature sensor, said humidity sensor, said pressure sensor and said ethylene oxide concentration sensor are each provided in plurality and are disposed in said inner housing at intervals.

3. An apparatus for monitoring the resistance of an indicator to ethylene oxide sterilization as claimed in claim 1, wherein said automatic control valve is a solenoid valve or a pneumatic valve.

4. An apparatus for monitoring resistance to indicators of ethylene oxide sterilization as claimed in claim 1 wherein said heater is a steam heater, hot gas from said steam heater being directed to one end of said heating tube and cold gas from the other end of said heating tube being directed to said steam heater.

5. The apparatus for monitoring resistance to an indicator of ethylene oxide sterilization as defined in claim 1, wherein the heater is an electric heater, and wherein a heating wire is disposed in the heating tube, and wherein the heating wire is electrically connected to the electric heater.

6. An apparatus for monitoring the resistance of an indicator to ethylene oxide sterilization as claimed in claim 1 wherein the air outlet of the vacuum pump is connected to a blowdown tank.

7. An apparatus for monitoring resistance to an indicator of ethylene oxide sterilization as claimed in claim 1, wherein a vaporizer is provided between the ethylene oxide gas source and the sterilization chamber, the ethylene oxide gas source being connected to the sterilization chamber by the vaporizer, the vaporizer being adapted to vaporize ethylene oxide, and temperature sensors being provided on the vaporizer and on the lines between the vaporizer and the sterilization chamber, the temperature sensors being adapted to monitor the temperature of the vaporizer and the temperature of the vaporized ethylene oxide.

8. An apparatus for monitoring the resistance of an indicator to ethylene oxide sterilization as claimed in claim 1 wherein a safety valve is attached to the sterilization chamber.

9. An apparatus for monitoring the resistance of an indicator to ethylene oxide sterilization as claimed in claim 1 wherein said sterilization chamber is further connected to a vent valve.

10. An apparatus for monitoring the resistance of an indicator to ethylene oxide sterilization as claimed in claim 1 wherein said sterilization chamber is further connected to an air compressor.