Split type chlorine dioxide air sterilizer

Abstract

The invention relates to the technical field of disinfection equipment, in particular to a split type chlorine dioxide air disinfection machine which comprises a closed shell and a reaction module, the reaction module is arranged in the closed shell, a cleaning process can be automatically triggered after the disinfection stage is finished, manual intervention is not needed, and the operation is simple and convenient. Seamless connection of disinfection or cleaning is achieved, the problems that traditional equipment is poor in cleaning collaboration and high in residual risk are thoroughly solved from the structural design, the low medicament conveying precision is monitored in real time, the flow speed control precision is improved, the flash explosion risk is eliminated, liquid level monitoring, fault classification early warning and emergency power supply are conducted on the upper cleaning agent chamber and the lower cleaning agent chamber, and the cleaning efficiency is improved. The real-time display of the liquid level of raw materials / clear water, the accurate alarm of faults and the completion of the unfinished reaction / washing step during power failure are realized, the visual adjustment of parameters and the storage of historical operation data are realized through human-computer interaction and data tracing, and the scene adaptability and the maintenance convenience are improved.

Description

Technical Field

[0001] This invention relates to the field of disinfection equipment technology, specifically a split-type chlorine dioxide air disinfection machine. Background Technology

[0002] Chlorine dioxide air sterilizers release pure molecular chlorine dioxide gas, which can effectively kill bacteria, viruses and other microorganisms in the air and on object surfaces, and effectively remove formaldehyde and odors, achieving air and environmental purification without dead angles. Most devices use chlorine dioxide pellets and aqueous solutions to react or chemically catalyze the process. The pure molecular ClO2 is diffused into the air through a heating, gas supply and ventilation system. ClO2 destroys the cell walls, nucleic acids and thiol-containing enzymes of microorganisms through strong oxidation, preventing their metabolic synthesis, thereby quickly inactivating them. It also has the theoretical ability to inactivate the novel coronavirus because it can destroy the envelope protein and RNA structure.

[0003] Existing equipment often uses independent control for disinfection and cleaning processes, requiring manual triggering or fixed program-triggered cleaning steps. It lacks an automatic coordination mechanism linked to liquid levels, easily leading to delayed rinsing after disinfection. This results in residual chemicals in the reaction chamber, affecting subsequent disinfection effectiveness and potentially causing secondary pollution due to chemical volatilization. Some equipment even lacks a dedicated cleaning chamber, relying solely on natural rinsing, which fails to thoroughly remove reaction residues and promotes bacterial growth over long-term use. The flow rate is often controlled using titration valves or gear drives, with flow rate errors generally exceeding 2 ml / min. Excessive flow rates can trigger flash explosions during liquid-liquid reactions. Furthermore, most equipment lacks real-time flow rate monitoring modules, failing to address viscosity changes or fluctuations caused by equipment aging, further exacerbating safety hazards. To address these issues, this invention proposes a split-type chlorine dioxide air sterilizer. Summary of the Invention

[0004] To address the problems in the prior art, this invention provides a split-type chlorine dioxide air sterilizer.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a split-type chlorine dioxide air sterilizer, including a sealed shell and a reaction module. The reaction module is provided inside the sealed shell. A control unit is fixedly connected to the inner top wall of the sealed shell. An interactive screen is fixedly connected to one side of the outer wall of the sealed shell. The sealed housing has an upper cleaning agent chamber and a lower cleaning agent chamber that are symmetrically and fixedly connected inside. Each of the upper and lower cleaning agent chambers has a connection hole at one end. A solenoid valve is fixedly connected to the inner wall of the connection hole. A liquid level sensor is fixedly connected to the inner wall of one side of each of the upper and lower cleaning agent chambers. Several heat dissipation holes are equidistantly opened through one side of the outer wall of the sealed housing. The lower cleaning agent chamber stores hydrochloric acid solution.

[0006] Specifically, the reaction module includes a reaction chamber, with a sodium chlorite solid carrier frame fixedly connected to the inner wall of the reaction chamber. An exhaust port is provided through one side of the upper surface of the reaction chamber. A fan is fixedly connected to the upper surface of the sealed shell, and the fan is fixedly connected to the exhaust port via a hose. A liquid inlet is provided through the center of the upper surface of the reaction chamber. A peristaltic pump is fixedly connected to the upper surface of the sealed shell, and the outlet of the peristaltic pump is fixedly connected to the liquid inlet via a water pipe. An outlet is provided through the lower surface of the lower cleaning agent chamber, and the inlet of the peristaltic pump is fixedly connected to the outlet via a water pipe. The outlet is equipped with a one-way valve.

[0007] Specifically, the upper and lower cleaning agent chambers have the same volume, the solenoid valve is used to control the opening and closing between the upper and lower cleaning agent chambers, the signal output terminal of the liquid level sensor is connected to the analog input port of the controller, and the controller can compare the liquid level sensor detection value with a preset threshold through a comparison command, and trigger an alarm program when the liquid level is lower than the preset threshold.

[0008] Specifically, the interactive screen is a touch screen, and it communicates bidirectionally with the control unit via the interactive screen bus. The interactive screen configuration includes a main interface, a parameter setting interface, and a history record interface, supporting parameter settings for disinfection duration, hydrochloric acid flow rate, and cleaning duration, as well as storage and querying of operating data by date.

[0009] Specifically, the controller has a built-in self-test program that can detect the operating status of output channels Y1-Y8 and input channels AD01-AD02. When a fault is detected, the specific fault type is displayed by means of indicator light flashing, buzzer alarm and interactive screen pop-up window. The fault types include channel fault, low liquid level and abnormal flow rate.

[0010] Specifically, the reaction chamber uses a solid-liquid reaction method to prepare chlorine dioxide. The peristaltic pump quantitatively delivers hydrochloric acid solution into the reaction chamber to react with the sodium chlorite solid carrier on the sodium chlorite solid carrier. The fan transports the chlorine dioxide gas generated by the reaction to the target space machine for disinfection.

[0011] Specifically, the power supply link consists of a power supply and a switching power supply. The switching power supply outputs a stable voltage to power the controller, liquid level sensor, fan, peristaltic pump and interactive screen.

[0012] Specifically, the controller controls the operating flow rate of the peristaltic pump by outputting PWM pulse signals. The flow rate control accuracy is ±0.5ml / min, and the program has a built-in limit threshold of 4ml / min for the upper limit of the flow rate to avoid liquid-liquid reaction flash explosion caused by excessive flow rate.

[0013] The beneficial effects of this invention are: (1) The split-type chlorine dioxide air sterilizer of the present invention innovatively adopts an upper and lower cleaning agent chamber structure with symmetrical distribution, with a height difference between the two. It uses a solenoid valve to realize fluid on / off control and gravity-assisted rapid delivery of cleaning liquid. Through the linkage of the controller and the liquid level sensor, the cleaning process can be automatically triggered after the disinfection stage without manual intervention, realizing seamless connection between disinfection and cleaning. At the same time, both the upper and lower cleaning agent chambers are equipped with replenishment pipes extending to the outside of the shell, and the lower end of the reaction chamber is equipped with a waste liquid pipe. The agent replenishment and waste liquid discharge do not require disassembly of the equipment, making operation convenient. From the structural design, it completely solves the problems of poor cleaning coordination and high residual risk of traditional equipment. By real-time monitoring of low agent delivery accuracy, the flow rate control accuracy is improved and the risk of flash explosion is eliminated. By monitoring the liquid level of the upper and lower cleaning agent chambers, classifying and warning of faults, and providing emergency power supply, the real-time display of raw material / clean water liquid level and accurate fault alarm are realized. When the power is off, the unfinished reaction / rinsing steps are completed. Through human-machine interaction and data traceability, the parameter visualization adjustment and historical operation data storage are realized, improving the scene adaptability and maintenance convenience. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 A front view schematic diagram of the split-type chlorine dioxide air sterilizer provided by the present invention; Figure 2 A schematic diagram of the heat dissipation hole installation position structure of the split-type chlorine dioxide air sterilizer provided by the present invention; Figure 3 A schematic diagram of the installation positions of the upper and lower cleaning agent chambers of the split-type chlorine dioxide air sterilizer provided by the present invention; Figure 4 A cross-sectional structural schematic diagram of the split-type chlorine dioxide air sterilizer provided by the present invention; Figure 5 A front view schematic diagram of the upper and lower cleaning agent chambers of the split-type chlorine dioxide air sterilizer provided by the present invention; Figure 6 A schematic diagram of the sterilization process structure of the split-type chlorine dioxide air sterilizer provided by the present invention; Figure 7 A schematic diagram of the touch screen interface structure of the split-type chlorine dioxide air sterilizer provided by the present invention.

[0016] In the diagram: 1. Sealed shell; 2. Reaction module; 21. Reaction chamber; 22. Sodium chlorite solid carrier frame; 23. Fan; 24. Peristaltic pump; 3. Control unit; 4. Interactive screen; 5. Upper cleaning agent chamber; 6. Lower cleaning agent chamber; 7. Solenoid valve; 8. Liquid level sensor; 9. Heat dissipation hole. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0018] like Figures 1-7 As shown, the present invention provides the following technical solution: Example 1: A split-type chlorine dioxide air sterilizer includes a sealed shell 1 and a reaction module 2. The reaction module 2 is located inside the sealed shell 1. A control unit 3 is fixedly connected to the inner top wall of the sealed shell 1, and an interactive screen 4 is fixedly connected to one side of the outer wall of the sealed shell 1. The sealed housing 1 has an upper cleaning agent chamber 5 and a lower cleaning agent chamber 6 that are symmetrically and fixedly connected inside. Each of the upper cleaning agent chamber 5 and the lower cleaning agent chamber 6 has a connection hole at one end. A solenoid valve 7 is fixedly connected to the inner wall of the connection hole. A liquid level sensor 8 is fixedly connected to the inner wall of one side of both the upper cleaning agent chamber 5 and the lower cleaning agent chamber 6. Several heat dissipation holes 9 are equidistantly opened through one side of the outer wall of the sealed housing 1. The lower cleaning agent chamber 6 stores hydrochloric acid solution.

[0019] The reaction module 2 includes a reaction chamber 21, with a sodium chlorite solid carrier frame 22 fixedly connected to the inner wall of the reaction chamber 21. An exhaust port is opened through one side of the upper surface of the reaction chamber 21. A fan 23 is fixedly connected to the upper surface of the sealed shell 1. The fan 23 is fixedly connected to the exhaust port through a hose. A liquid inlet is opened through the center of the upper surface of the reaction chamber 21. A peristaltic pump 24 is fixedly connected to the upper surface of the sealed shell 1. The outlet of the peristaltic pump 24 is fixedly connected to the liquid inlet through a water pipe. An outlet is opened through the lower surface of the lower cleaning agent chamber 6. The inlet of the peristaltic pump 24 is fixedly connected to the outlet through a water pipe. The outlet is equipped with a one-way valve.

[0020] The upper cleaning agent chamber 5 and the lower cleaning agent chamber 6 have the same volume. The solenoid valve 7 is used to control the opening and closing between the upper cleaning agent chamber 5 and the lower cleaning agent chamber 6. The signal output terminal of the liquid level sensor 8 is connected to the analog input port of the controller 3. The controller 3 can compare the detection value of the liquid level sensor 8 with the preset threshold through comparison instructions. When the liquid level is lower than the preset threshold, an alarm program is triggered.

[0021] Among them, the interactive screen 4 is a touch screen, which communicates bidirectionally with the control unit 3 through the interactive screen 4 bus. The configuration of the interactive screen 4 includes a main interface, a parameter setting interface and a history record interface. It supports parameter settings for disinfection duration, hydrochloric acid flow rate and cleaning duration, as well as storage of operating data and querying by date.

[0022] The controller 3 has a built-in self-test program that can detect the operating status of output channels Y1-Y8 and input channels AD01-AD02. When a fault is detected, the specific fault type is displayed by flashing indicator lights, buzzer alarm, and pop-up window on interactive screen 4. Fault types include channel fault, low liquid level, and abnormal flow rate.

[0023] The reaction chamber 21 uses a solid-liquid reaction method to prepare chlorine dioxide. The peristaltic pump 24 quantitatively delivers hydrochloric acid solution into the reaction chamber 21 to react with the sodium chlorite solid carrier 22. The fan 23 delivers the chlorine dioxide gas generated by the reaction to the target space machine for disinfection.

[0024] The power supply link consists of a power supply and a switching power supply. The stable output voltage of the switching power supply powers the controller 3, the liquid level sensor 8, the fan 23, the peristaltic pump 24 and the interactive screen 4.

[0025] The controller 3 controls the operating flow rate of the peristaltic pump 24 by outputting PWM pulse signals. The flow rate control accuracy is ±0.5ml / min, and the program has a built-in limit threshold of 4ml / min for the upper limit of the flow rate to avoid liquid-liquid reaction flash explosion caused by excessive flow rate.

[0026] Model of each component: The sealed housing 1 is cylindrical, with good sealing and corrosion resistance, which can effectively prevent internal agents from leaking and external impurities from entering; Both the upper cleaning agent chamber 5 and the lower cleaning agent chamber 6 are semi-cylindrical and arranged symmetrically inside the sealed shell 1. The volume of the upper cleaning agent chamber 5 and the lower cleaning agent chamber 6 is 200mL, the central axis coincides, and the relative height difference is 12cm. This height difference design can achieve rapid delivery of cleaning solution with the help of gravity. The lower cleaning agent chamber 6 is used to store 3mol / L hydrochloric acid solution, and the upper cleaning agent chamber 5 is used to store water cleaning solution. A replenishment pipe is provided on one side of the upper cleaning agent chamber 5 and the lower cleaning agent chamber 6. The waste liquid pipe of the replenishment pipe extends to the outside of the sealed shell 1 and is equipped with a valve. The solenoid valve 7 is a DN15 type DC 24V solenoid valve. A connection hole is provided at the center of the opposite end of the upper cleaning agent chamber 5 and the lower cleaning agent chamber 6. The solenoid valve 7 is fixedly connected to the inner wall of the connection hole by a flange. The on and off state of the solenoid valve 7 is controlled by the controller 3 to realize the flow and disconnection between the upper cleaning agent chamber 5 and the lower cleaning agent chamber 6. The liquid level sensor 8 is an OmegaLVU2718 ultrasonic liquid level sensor. The liquid level sensor 8 is fixedly connected to the lower part of the inner wall of the upper cleaning agent chamber 5 and the lower cleaning agent chamber 6 on one side by 316L stainless steel bolts. The liquid level sensor 8 has a measurement range of 0-20cm and an accuracy of ±0.1cm, and can detect the liquid level height in the chamber in real time. The heat dissipation holes 9 are round holes with a diameter of 5mm and a spacing of 20mm. They are arranged in a matrix to quickly dissipate the heat generated by the control unit 3 and other components during operation, ensuring stable operation of the equipment. The controller 3 is a Mitsubishi FX3UPLC all-in-one machine. This all-in-one machine integrates PWM output port, digital output port Y1-Y8, and analog input port AD01-AD02. It has the ability to perform logic operations, parameter storage, and multi-module linkage control. The controller 3 is fixed to the top wall of the sealed housing 1 by bracket bolts. The interactive screen 4 is fixedly connected to the middle of the front outer wall of the sealed housing 1 by a buckle. The interactive screen 4 is a 4.3-inch capacitive touch screen that supports multi-touch operation. The reaction module 2 is located on one side of the lower cleaning agent chamber 6 and includes a reaction chamber 21, a sodium chlorite solid carrier frame 22, a blower 23, and a peristaltic pump 24. The reaction chamber 21 is semi-cylindrical with a volume of 500mL. The sodium chlorite solid carrier frame 22 is fixedly connected to the middle of its inner wall through a slot. The carrier frame has a grid structure and is used to carry sodium chlorite solid particles, so that the solid particles are evenly distributed and can react fully with hydrochloric acid solution. The lower end of the reaction chamber 21 is provided with a waste liquid pipe, which extends to the outside of the sealed shell 1 and is equipped with a valve. The blower 23 is a small centrifugal blower, model DF-120, rated voltage 24V. An exhaust port is opened through the upper surface of the reaction chamber 21. A high temperature and corrosion resistant hose is fixedly connected to the exhaust port. The air inlet of the blower 23 is fixedly connected to the exhaust port of the reaction chamber 21 through the high temperature and corrosion resistant hose. The blower 23 is fixed to the upper surface of the sealed shell 1 by bolts. It is used to extract the chlorine dioxide gas generated by the reaction and transport it to the target disinfection space. The peristaltic pump 24 is model BT100-2J with a rated voltage of 24V. It has a liquid inlet that runs through the center of the upper surface of the reaction chamber 21. A corrosion-resistant hose is fixedly connected to the liquid inlet. The peristaltic pump 24 is fixedly connected to the sealed shell 1 through a bracket. The outlet of the peristaltic pump 24 is fixedly connected to the liquid inlet of the reaction chamber 21 through a corrosion-resistant hose. The one-way valve is model CV-15. It has a liquid outlet through the center of the lower surface of the lower cleaning agent chamber 6. The one-way valve is fixedly connected to the liquid outlet. The one-way valve can prevent the hydrochloric acid solution from flowing back. The inlet of the peristaltic pump 24 is fixedly connected to the outlet of the one-way valve through a hose, forming a transport link for the hydrochloric acid solution from the lower cleaning agent chamber 6 to the reaction chamber 21. The power supply chain consists of an AC220V mains power supply and a switching power supply of model S-100-24. The switching power supply is fixedly installed inside the rear of the sealed housing 1. Its input terminal is connected to the AC220V mains power supply through a power cord, and its output terminal stably outputs DC24V voltage. It supplies power to the controller 3, liquid level sensor 8, fan 23, peristaltic pump 24 and interactive screen 4 through wires. Each power supply branch is equipped with a fuse with a rated current of 2A to prevent overload damage to components. When the equipment is connected to the signal, the signal output terminals of the two liquid level sensors 8 are connected to the analog input ports AD01 and AD02 of the controller 3 through shielded wires, respectively. The signal of the liquid level sensor 8 in the upper cleaning agent chamber 5 is connected to AD01, and the signal of the liquid level sensor in the lower cleaning agent chamber 6 is connected to AD02, which is used to transmit the real-time liquid level data to the controller 3. The digital / PWM output port Y1 of the controller 3 is connected to the control terminal of the peristaltic pump 24, Y4 is connected to the control terminal of the fan 23, Y5 is connected to the control terminal of the solenoid valve 7, Y6 is connected to the fault indicator installed on the front side of the sealed housing 1, adjacent to the interactive screen 4, and Y7 is connected to the buzzer installed next to the fault indicator, which is used to output control signals to drive the actuators and trigger fault alarms. During equipment interaction communication, the interactive screen 4 communicates bidirectionally with the control unit 3 via the RS485 bus. Through this communication link, the interactive screen 4 can send parameter setting instructions to the control unit 3, and the control unit 3 can upload real-time operating data such as liquid level, flow rate, running time, and fault information to the interactive screen 4. When the equipment is fluid connected, the outlet of the upper cleaning agent chamber 5 is connected to the inlet of the lower cleaning agent chamber 6 through the solenoid valve 7. The outlet of the lower cleaning agent chamber 6 is connected to the inlet of the peristaltic pump 24 through the check valve and the hose. The outlet of the peristaltic pump 24 is connected to the inlet of the reaction chamber 21 through the hose, forming a chemical delivery link. The exhaust port of the reaction chamber 21 is connected to the air inlet of the fan 23 through the hose, forming a disinfection gas output link. At the same time, the upper cleaning agent chamber 5 can deliver cleaning fluid to the reaction chamber 21 through the pipelines of the solenoid valve 7 and the lower cleaning agent chamber 6, forming a cleaning link. Operating Procedure: Upon use, first connect to AC220V mains power. Power on the device, and the controller 3 will automatically start its built-in self-test program. The self-test lasts 5 seconds. During the self-test, the controller 3 sequentially checks the operating status of digital output ports Y1-Y8 and analog input ports AD01-AD02. It outputs a test signal to Y1 to check if the peristaltic pump 24 responds, outputs a test signal to Y4 to check if the fan 23 starts normally, and outputs a test signal to Y5 to check if the solenoid valve 7 is properly open and closed. It also checks whether the two liquid level sensors 8 can output signals normally via AD01-AD02. If a channel fault is detected, such as no response from peristaltic pump 24 after Y1 output signal, or no liquid level signal input from AD01, the controller 3 controls the Y6 fault indicator to flash at a frequency of 1Hz, and the Y7 buzzer to sound an alarm once every 2 seconds. At the same time, a fault signal is sent to the interactive screen 4 via the RS485 bus. The interactive screen 4 displays the specific fault type in a pop-up window, such as a peristaltic pump 24 channel fault, a liquid level sensor 8 fault in the upper cleaning agent chamber 5, or an abnormal flow rate. If there is no abnormality in the self-test, the controller 3 controls the fault indicator to turn off and the buzzer to stop working. The interactive screen 4 enters the main interface and displays the initial status of the equipment, such as standby or normal liquid level. Operators can access the parameter setting interface by clicking the parameter setting button on the main interface of interactive screen 4. This interface has input boxes for values ​​such as disinfection time, disinfection duration, or cleaning time, as well as save or cancel buttons. According to the requirements of the target disinfection scenario, the corresponding parameters are entered, such as disinfection time 30 minutes and cleaning time 5 minutes. After clicking the save button, the parameters are sent to the controller 3 via the RS485 bus and stored in the data register inside the controller 3 for subsequent control. If the cancel button is clicked, the parameter setting is invalid and the user returns to the main interface. After the parameters are set, click the start button on the main interface of the interactive screen 4 to start the disinfection process. The controller 3 outputs a PWM pulse signal to the peristaltic pump 24 through the output port Y1, and controls the operating speed of the peristaltic pump 24 according to the hydrochloric acid flow rate set in the parameters to achieve quantitative delivery of hydrochloric acid solution. In this embodiment, the flow rate control accuracy can reach ±0.5ml / min. At the same time, the controller 3 outputs a control signal through Y4 to start the fan 23. The 3 mol / L hydrochloric acid solution stored in the cleaning agent chamber 6 is transported to the reaction chamber 21 through a one-way valve and hose under the drive of the peristaltic pump 24. It reacts with the sodium chlorite solid on the sodium chlorite solid carrier 22. The reaction equation is: 5NaClO2 + 4HCl = 4ClO2 + 5NaCl + 2H2O. The chlorine dioxide gas generated by the reaction is drawn into the fan 23 through the exhaust port of the reaction chamber 21 and hose, and then transported to the target disinfection space by the fan 23 to achieve air disinfection. During the disinfection process, the controller 3 collects the signal from the liquid level sensor 8 in the cleaning agent chamber 6 in real time through AD02, and calculates the real-time hydrochloric acid flow rate through the PWM signal feedback value. If the flow rate exceeds the limit threshold built into the program, the controller 3 immediately controls the peristaltic pump 24 to stop and starts the fault alarm mechanism to avoid excessive flow rate. When the disinfection time reaches the set value, or when the liquid level sensor 8 of the lower cleaning agent chamber 6 detects that the hydrochloric acid solution is depleted and the liquid level is lower than the preset minimum threshold, the controller 3 determines that the disinfection stage is over and automatically enters the cleaning stage. At this time, the controller closes the Y1 output, the peristaltic pump 24 stops working, and at the same time opens the Y5 output to control the solenoid valve 7 to open. The clean water in the upper cleaning agent chamber 5 enters the reaction chamber 21 through the pipeline of the solenoid valve 7 and the lower cleaning agent chamber 6 under the action of gravity, and washes the residual waste liquid and solid residue on the inner wall of the reaction chamber 21 and the sodium chlorite solid carrier frame 22. During the cleaning process, the liquid level sensor 8 in the upper cleaning agent chamber 5 detects the liquid level change in real time. When the controller 3 detects through AD01 that the clean water level has dropped to the preset cleaning completion level, that is, when the clean water has submerged the residual waste liquid in the reaction chamber 21, the controller 3 shuts off the Y5 output, the solenoid valve 7 is disconnected, and the cleaning stage ends. After cleaning, the rinsing wastewater in the reaction chamber 21 is transported to the external wastewater tank through the wastewater pipe. When the wastewater in the reaction chamber 21 is drained, the liquid level sensor 8 of the lower cleaning agent chamber 6 detects that the liquid level is 0 and sends a drain signal to the controller 3. The controller 3 shuts off the Y1 output, the peristaltic pump 24 stops working, and at the same time shuts off the Y4 output, the blower 23 stops running. The replenishment pipe can be used to replenish the solution in the upper cleaning agent chamber 5 and the lower cleaning agent chamber 6.

[0027] After all actuators are turned off, the controller 3 stores the operation data, including disinfection time, actual hydrochloric acid flow rate, cleaning time, liquid level change, and whether a fault occurred, into the local memory. The memory can store 300 operation data entries, and a cyclic overwrite method is used, that is, the 301st data entry overwrites the 1st data entry. Finally, the interactive screen 4 displays a disinfection completion prompt, and the equipment returns to standby mode. During equipment operation and after shutdown, operators can click the history record button on the main interface of interactive screen 4 to enter the history record interface. This interface displays nearly 300 operation data in chronological order and supports querying operation records for a specific time period by date. Through this function, the operating status of the equipment can be clearly traced, which is convenient for later maintenance and optimization of parameter settings according to different disinfection scenarios.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A split-type chlorine dioxide air sterilizer, comprising a sealed shell (1) and a reaction module (2), wherein the sealed shell (1) is provided with the reaction module (2), a control unit (3) is fixedly connected to the inner top wall of the sealed shell (1), and an interactive screen (4) is fixedly connected to one side of the outer wall of the sealed shell (1). Its features are, The sealed housing (1) has an upper cleaning agent chamber (5) and a lower cleaning agent chamber (6) symmetrically connected inside. Each of the upper cleaning agent chamber (5) and the lower cleaning agent chamber (6) has a connection hole at one end. A solenoid valve (7) is fixedly connected to the inner wall of the connection hole. A liquid level sensor (8) is fixedly connected to the inner wall of one side of the upper cleaning agent chamber (5) and the lower cleaning agent chamber (6). Several heat dissipation holes (9) are equidistantly opened through one side of the outer wall of the sealed housing (1). The lower cleaning agent chamber (6) stores hydrochloric acid solution.

2. The split-type chlorine dioxide air sterilizer according to claim 1, characterized in that: The reaction module (2) includes a reaction chamber (21), and a sodium chlorite solid carrier frame (22) is fixedly connected to the inner wall of the reaction chamber (21). An exhaust port is opened through one side of the upper surface of the reaction chamber (21). A fan (23) is fixedly connected to the upper surface of the sealed shell (1). The fan (23) is fixedly connected to the exhaust port through a hose. An inlet is opened through the center of the upper surface of the reaction chamber (21). A peristaltic pump (24) is fixedly connected to the upper surface of the sealed shell (1). The outlet of the peristaltic pump (24) is fixedly connected to the inlet through a water pipe. An outlet is opened through the lower surface of the lower cleaning agent chamber (6). The inlet of the peristaltic pump (24) is fixedly connected to the outlet through a water pipe. The outlet is equipped with a one-way valve.

3. The split-type chlorine dioxide air sterilizer according to claim 1, characterized in that: The upper cleaning agent chamber (5) and the lower cleaning agent chamber (6) have the same volume. The solenoid valve (7) is used to control the opening and closing between the upper cleaning agent chamber (5) and the lower cleaning agent chamber (6). The signal output terminal of the liquid level sensor (8) is connected to the analog input port of the controller (3). The controller (3) can compare the detection value of the liquid level sensor (8) with the preset threshold through comparison instructions. When the liquid level is lower than the preset threshold, an alarm program is triggered.

4. The split-type chlorine dioxide air sterilizer according to claim 1, characterized in that: The interactive screen (4) is a touch screen. It communicates bidirectionally with the control unit (3) via the bus of the interactive screen (4). The configuration of the interactive screen (4) includes a main interface, a parameter setting interface and a history record interface. It supports parameter settings for disinfection duration, hydrochloric acid flow rate and cleaning duration, as well as storage and querying of running data by date.

5. The split-type chlorine dioxide air sterilizer according to claim 1, characterized in that: The controller (3) has a built-in self-test program that can detect the operating status of output channels Y1-Y8 and input channels AD01-AD02. When a fault is detected, the specific fault type is displayed by flashing indicator lights, buzzer alarm and interactive screen (4) pop-up window. The fault types include channel fault, low liquid level and abnormal flow rate.

6. The split-type chlorine dioxide air sterilizer according to claim 2, characterized in that: The reaction chamber (21) uses a solid-liquid reaction method to prepare chlorine dioxide. The peristaltic pump (24) quantitatively delivers hydrochloric acid solution into the reaction chamber (21) to react with sodium chlorite solid on the sodium chlorite solid carrier frame (22). The fan (23) delivers the chlorine dioxide gas generated by the reaction to the target space machine for disinfection.

7. The split-type chlorine dioxide air sterilizer according to claim 1, characterized in that: The power supply link consists of a power supply and a switching power supply. The stable output voltage of the switching power supply powers the controller (3), liquid level sensor (8), fan (23), peristaltic pump (24) and interactive screen (4).

8. The split-type chlorine dioxide air sterilizer according to claim 1, characterized in that: The controller (3) controls the operating flow rate of the peristaltic pump (24) by outputting PWM pulse signals. The flow rate control accuracy is ±0.5ml / min, and the program has a built-in limit threshold of 4ml / min for the upper limit of the flow rate to avoid liquid-liquid reaction flash explosion caused by excessive flow rate.

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