Marine medical waste disinfection system based on steam self-generation and PLC automatic control

Abstract

A sterilization cavity body is provided with an upper structure and a lower structure, the upper portion of the sterilization cavity body is a sterilization chamber, the lower portion of the sterilization cavity body is a water containing area, an air inlet electromagnetic valve is arranged at an air inlet of the sterilization chamber, and an air outlet of the sterilization chamber is connected with an ultraviolet sterilizer, a vacuum pump and an activated carbon filter through an exhaust electromagnetic valve. The activated carbon filter is connected with the vent; an electric heater is arranged at the bottom of the water containing area to form a steam generation module; the medical waste disinfection device control system comprises a medical waste disinfection device controller and a medical waste disinfection device display, the medical waste disinfection device controller adopts a PLC (Programmable Logic Controller), and the PLC is connected with a temperature sensor and a pressure sensor which are arranged on the sterilization cavity body; the control box is connected with the temperature sensor, the pressure sensor, the ultraviolet sterilizer, the activated carbon filter, the vacuum pump, the electromagnetic valves and the medical waste disinfection device displayer.

Description

Technical Field

[0001] The utility model relates to an automated high-temperature steam disinfection treatment system for medical waste on board ships, in particular to a medical waste disinfection system on board ships based on self-generation of steam and automatic control by PLC. Background Art

[0002] The existing similar ship medical waste disinfection device uses an external steam source for high temperature steam sterilization, and the sterilization process is controlled by a board card program, such as Figure 1 The external steam source requires a long steam pipeline to supply gas, and the system steam pipeline must be drained before each use, which makes it difficult to use and maintain.

[0003] At the same time, the existing technology controls the sterilization process through the board card program, and there is no limited authority for the operation parameter settings, which cannot avoid arbitrary modification or accidental touch, and does not have the function of restoring to factory settings. After the parameters are adjusted, they cannot be restored to the default values, which poses certain safety risks. Utility Model Content

[0004] Based on the above problems, this utility model proposes a ship-based medical waste disinfection system based on steam self-generation and PLC automatic control, the purposes of which are as follows:

[0005] 1) Through the steam self-generation technology, the convenience of using and maintaining medical waste disinfection equipment is improved, and the user experience is enhanced.

[0006] 2) Based on the existing board control program, PLC program design is used to eliminate potential safety hazards and enhance equipment safety.

[0007] To achieve the above-mentioned purpose, the technical solution of the utility model is: a ship-based medical waste disinfection system based on steam self-generation and PLC automatic control, comprising: a medical waste disinfection device, a medical waste disinfection device control system, the medical waste disinfection device comprising a sterilization chamber body containing a steam generation module, a solenoid valve, a temperature sensor, a pressure sensor, a UV sterilizer, an activated carbon filter, and a vacuum pump, the sterilization chamber body having an upper and lower structure, the upper part being a sterilization chamber, and the lower part being a water storage area, an air inlet solenoid valve being provided at the sterilization chamber air inlet, and an air outlet being connected to the UV sterilizer, vacuum pump, and activated carbon filter via an exhaust solenoid valve, and the activated carbon filter being further connected to the air vent; an electric heater is provided at the bottom of the water storage area to form a steam generation module; the medical waste disinfection device control system comprises a medical waste disinfection device controller and a medical waste disinfection device display, the medical waste disinfection device controller adopts a PLC controller, the PLC controller is connected to the temperature sensor and pressure sensor provided on the sterilization chamber body, and a control box is connected to the temperature sensor, pressure sensor, UV sterilizer, activated carbon filter, vacuum pump, various solenoid valves, and the medical waste disinfection device display.

[0008] Furthermore, the water storage area is connected to a water replenishment solenoid valve for replenishing water required for electric heating of the steam generation module.

[0009] Furthermore, a liquid level sensor is provided on the steam generation module, and the liquid level sensor is connected to the water replenishment solenoid valve for controlling the automatic water replenishment amount.

[0010] Furthermore, the outer jacket layer of the sterilization chamber body is provided with a cooling water outlet.

[0011] Furthermore, a condensate wastewater discharge solenoid valve is provided at the bottom of the water storage area.

[0012] Furthermore, the PLC controller is used to comprehensively monitor the operating status of the medical waste disinfection device and implement the control of the vacuum pump, UV sterilizer and various solenoid valves.

[0013] Furthermore, the PLC controller collects the temperature signal of the temperature sensor and the pressure signal of the pressure sensor, and outputs the control signal to the medical waste disinfection device after processing, which is used to control the medical waste disinfection device to implement the high-temperature steam sterilization process, and at the same time realize fault alarm and data communication with the auxiliary machine monitoring system.

[0014] The beneficial effects of the utility model are:

[0015] 1) A steam generation module is installed in the sterilization chamber, and a temperature sensor controls an electric heater to heat water and generate steam, thereby achieving high-temperature steam sterilization in the sterilization chamber;

[0016] 2) A water supply solenoid valve is provided to supply the steam generation module with water required for electric heating. A liquid level sensor is provided on the steam generation module to automatically control the water supply amount;

[0017] 3) Use PLC program to control the high-temperature steam sterilization process, increase parameter setting limit permissions to avoid arbitrary modification;

[0018] 4) It has the function of restoring factory settings to ensure that the parameters can be restored to the default values ​​after being adjusted;

[0019] 5) Each digital input channel has independent electrical isolation, ensuring that the signal will not affect the normal operation of the entire module in the event of strong electrical interference. Each digital output group has fuse protection, which can automatically protect the module in the event of overload. This is achieved through PLC hardware.

[0020] In summary, the present invention has the following advantages and features compared with the prior art:

[0021] 1) Through the self-generating steam design, there is no need for a system steam source and steam pipeline. It can be started with one button and used immediately and runs automatically, which greatly improves the convenience of equipment use and maintenance.

[0022] 2) Ensure that the device is in a safe state and does not malfunction during the power-on process.

[0023] 3) Misoperation can be ignored and the device can be switched back to factory settings with one click if necessary.

[0024] 4) When the analog input exceeds the range or the analog signal is disconnected, a prompt will be given, and it has an equipment overload protection function. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is the existing technology roadmap of ship-based medical waste disinfection equipment;

[0026] Figure 2 This is the technical roadmap of the utility model's ship-based medical waste disinfection system based on steam self-generation and PLC automatic control;

[0027] Figure 3 This is a working principle diagram of the steam self-generating medical waste disinfection device of the utility model;

[0028] Figure 4 This is a schematic structural diagram of the steam self-generating medical waste disinfection device of the utility model;

[0029] Figure 5 This is a schematic diagram of the hardware structure of the control system of the steam self-generating medical waste disinfection device of the present invention;

[0030] In the figure: 1-vent, 2-waste liquid discharge port, 3-cooling water inlet, 4-cooling water outlet, 5-air inlet, 6-sterilization chamber body, 7-water storage area, 8-sterilization chamber, 9-UV sterilizer, 10-vacuum pump, 11-activated carbon filter, 12-pressure sensor, 13-temperature sensor. DETAILED DESCRIPTION

[0031] In order to make the advantages and technical solutions of the present invention clearer and more specific, the present invention is described in detail below with reference to the accompanying drawings and specific implementation examples.

[0032] like Figures 2 to 5 As shown, the embodiment of the present invention proposes a medical waste disinfection system for ships based on steam self-generation and PLC automatic control, comprising:

[0033] 1) Medical waste disinfection device

[0034] It mainly consists of a sterilization chamber body 6 (including a steam generation module), a solenoid valve, a temperature sensor 13, a pressure sensor 12, an ultraviolet sterilizer 9, an activated carbon filter 10, a vacuum pump 9 and a control box.

[0035] The sterilization chamber body 1 is designed as an upper and lower structure, with the sterilization chamber 8 at the top and the water storage area 7 at the bottom. The sterilization chamber air inlet 5 is equipped with an air inlet solenoid valve, and the air outlet is connected to a vacuum valve or, via an exhaust solenoid valve, to a UV sterilizer 9, a vacuum pump 10, and an activated carbon filter 11. The activated carbon filter 11 is then connected to the air vent 1. An electric heater is installed at the bottom of the water storage area 7 to form a steam generation module, which electrically heats water to generate steam for high-temperature steam sterilization within the upper sterilization chamber 8. A water replenishment solenoid valve is also added to replenish the water required for electrical heating in the steam generation module. A liquid level sensor is installed on the steam generation module to automatically control the water replenishment. A condensate discharge solenoid valve is also installed at the bottom of the water storage area. The outer jacket layer of the sterilization chamber body 1 is equipped with a cooling water outlet 4. The sterilization chamber body 6 is equipped with a temperature sensor 13 and a pressure sensor 12. A control box is connected to the liquid level sensor, temperature sensor 13, pressure sensor 12, UV sterilizer 9, activated carbon filter 11, vacuum pump 10, and the solenoid valves.

[0036] like Figure 2 The process flow charts, operating principle diagrams, and examples shown in Figures 3 and 4 show that the high-temperature steam sterilization process for medical waste primarily consists of four sequential steps: pre-vacuuming, steam generation, high-temperature sterilization, and cooling. In the "automatic" mode, the device control box automatically adjusts the operating state of the equipment and valves based on the readings of the temperature and pressure sensors, switching between stages until the disinfection and sterilization of the medical solid waste is complete.

[0037] 2) Medical waste disinfection device control system

[0038] The hardware components include: medical waste disinfection device controller and medical waste disinfection device display. Figure 5 shown.

[0039] The primary function of the medical waste disinfection device control system is to comprehensively monitor the device's operating status and implement control of the vacuum pump, UV sterilizer, and electric valves. The control system collects relevant signal inputs from the device (such as temperature and pressure), analyzes these signals, and implements control strategies. It also provides fault alarms and data communication with auxiliary equipment monitoring systems.

[0040] The medical waste disinfection device control system and display are configured with administrator and operator usernames and passwords to limit login personnel and meet confidentiality requirements. When a user logs in as an operator, they can only perform page-turning and monitoring inspection operations, but cannot enter the system parameter interface or modify the corresponding parameter information. When the operator enters the password to log in as an administrator, they are granted access to the system parameter interface and can modify and save the relevant parameters.

[0041] The status that can be displayed on the human-machine interface includes:

[0042] a. Device process;

[0043] b. Equipment operating status;

[0044] c. Device operating parameters;

[0045] d. Through the screen, you can complete the temperature, pressure setting and stage running time setting.

Claims

1. A medical waste disinfection system for ships based on steam self-generation and PLC automatic control, characterized in that: include: Medical waste disinfection device, medical waste disinfection device control system, the medical waste disinfection device includes a sterilization chamber body containing a steam generation module, a solenoid valve, a temperature sensor, a pressure sensor, an ultraviolet sterilizer, an activated carbon filter, and a vacuum pump. The sterilization chamber body has an upper and lower structure, the upper part is a sterilization chamber, and the lower part is a water holding area. The air inlet of the sterilization chamber is provided with an air inlet solenoid valve, and the air outlet is connected to the ultraviolet sterilizer, vacuum pump, and activated carbon filter through an exhaust solenoid valve, and the activated carbon filter is then connected to the air vent; an electric heater is provided at the bottom of the water holding area to form a steam generation module; the medical waste disinfection device control system includes a medical waste disinfection device controller and a medical waste disinfection device display. The medical waste disinfection device controller adopts a PLC controller. The PLC controller is connected to the temperature sensor and pressure sensor provided on the sterilization chamber body, and the control box is connected to the temperature sensor, pressure sensor, ultraviolet sterilizer, activated carbon filter, vacuum pump, various solenoid valves and the medical waste disinfection device display.

2. The ship medical waste disinfection system based on steam self-generation and PLC automatic control according to claim 1 is characterized by: The water storage area is connected to a water supply solenoid valve for supplying water required for electric heating to the steam generation module.

3. The ship medical waste disinfection system based on steam self-generation and PLC automatic control according to claim 2 is characterized by: A liquid level sensor is provided on the steam generation module, and the liquid level sensor is connected to the water replenishment solenoid valve for controlling the automatic water replenishment amount.

4. The ship medical waste disinfection system based on steam self-generation and PLC automatic control according to claim 1 is characterized by: The outer jacket layer of the sterilization chamber body is provided with a cooling water outlet.

5. The ship medical waste disinfection system based on steam self-generation and PLC automatic control according to claim 1 is characterized by: A condensate wastewater discharge solenoid valve is also provided at the bottom of the water storage area.

6. The ship medical waste disinfection system based on steam self-generation and PLC automatic control according to claim 1 is characterized by: The PLC controller is used to comprehensively monitor the operating status of the medical waste disinfection device and implement the control of the vacuum pump, UV sterilizer and various solenoid valves.

7. The ship medical waste disinfection system based on steam self-generation and PLC automatic control according to claim 1 is characterized by: The PLC controller collects the temperature signal of the temperature sensor and the pressure signal of the pressure sensor, and outputs the control signal to the medical waste disinfection device after processing. It is used to control the medical waste disinfection device to implement the high-temperature steam sterilization process, and at the same time realize fault alarm and data communication with the auxiliary machine monitoring system.

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