A self-inductive disinfection spray device and its application

Abstract

The present invention discloses a self-inductive disinfection spray device and its application. The self-inductive disinfection spray device includes an outer cabin and multiple sets of disinfection components composed of a spray head, a spray pump, a disinfectant tank, and connecting pipelines, and is equipped with multiple sensors for microbial monitoring. The microbial activity is determined based on the monitoring data, so as to adjust the working mode of the disinfection components. The present invention comprehensively judges the microbial activity through the concentration of microbial-related VOCs and particulate matter, uses the growth rate of microbial activity to judge the occurrence of microbial pollution events, triggers the disinfection device according to the microbial activity and adjusts the disinfection intensity, ensuring accurate dosage of disinfectant during the disinfection process, no lag in disinfection time, and avoiding the generation of microbial drug resistance by alternating the use of disinfectants, and can flexibly meet complex public health disinfection requirements.

Description

Technical Field

[0001] The present invention relates to a spray device for environmental disinfection, and particularly to a disinfection spray device that can adjust the dosage and type of disinfectant according to the on-site microbial contamination situation, belonging to the technical field of public health equipment. Background Art

[0002] A disinfectant is a preparation used to kill microorganisms on a transmission medium to meet the requirements of disinfection or sterilization. Compared with other disinfection means, disinfectants have excellent disinfection effects on narrow environments and environmental object surfaces in crowded places, and different types of disinfectants can be selected according to different disinfection scenarios. Commonly used disinfectants for air disinfection include 200 mg / L chlorine dioxide, 0.2% peracetic acid, 3% hydrogen peroxide, and 100 mg / L hypochlorous acid. They are all highly efficient broad-spectrum disinfectants and cause less harm to other organisms.

[0003] The sudden global COVID-19 pandemic in 2020 has led to a sharp increase in the use of disinfectants, especially in crowded public places and ordinary residents' homes. However, disinfectants are not only a kind of "protective reagent" but also a kind of "dangerous product". For example, inhalation of hypochlorous acid and ozone can cause the occurrence and aggravation of asthma. Currently, except for hospitals, research institutes, farms, etc. that are equipped with professional disinfectant users due to special disinfection requirements, there are problems such as over-disinfection, under-disinfection, and lag in disinfection time during the use of disinfectants in most scenarios. Specifically, they include: 1) The dosage and time of disinfectant use mostly rely on human judgment and are difficult to adapt to the actual microbial contamination situation. In most cases, the use of disinfectants occurs after microbial contamination has occurred for some time, and there are often phenomena such as disinfectant remaining in the environment after sterilization or the need for secondary disinfection due to insufficient use of disinfectants; 2) Incorrect judgments of relatively low microbial contamination levels can also lead to the direct use of high-concentration disinfectants with better disinfection effects but stronger harm to the ecosystem and human health, causing additional harmful effects; 3) Using a single disinfectant for disinfection can cause microorganisms to develop drug resistance, reduce the subsequent disinfection effect, and even produce drug-resistant bacteria.

[0004] In order to solve the first and second problems mentioned above, some equipment attempts to determine the amount of disinfectant used by judging the activity of microorganisms, which is called "self-sensing disinfection equipment". However, the self-sensing method of current self-sensing disinfection equipment is not very practical. Some self-sensing disinfection equipment reflects the activity of harmful microorganisms in the place through the particle concentration, biological temperature, and biological density of the place to be tested, but the correlation between these indicators and the actual microbial activity is not stable and consistent, and the spatial representativeness is not strong. It is impossible to quickly reflect the overall microbial contaminant status of the place, and it is impossible to avoid the problem of excessive disinfection or insufficient disinfection. Some scholars have also tried to introduce mature scientific research microbial online monitoring technologies or equipment such as carbon nanowires and WIBS into commercial or civilian fields, but there is no technology to connect it in series with disinfection equipment. Even if there is in the future, the cost is too high. In addition, the current self-sensing disinfection equipment uses the absolute level of microbial activity as an indicator to determine the increase in the amount of disinfectant, but this indicator is very difficult to determine because the risk levels of different microbial species vary greatly, and determining the accurate absolute level of microbial activity requires very high calibration of the self-sensing equipment, which is very difficult to achieve.

[0005] Volatile organic compounds (VOCs) emitted by microorganisms are an important source of indoor VOCs. Detecting microbial marker VOCs is a convenient and quick alternative method for detecting microorganisms. For example, indole can be used to indicate Escherichia coli, methyl nicotinate can be used to indicate Mycobacterium tuberculosis, and 2-nonanone can be used to indicate Pseudomonas aeruginosa. Ethanol, n-butanol, isopentanol, formaldehyde, acetaldehyde, isobutyraldehyde, benzaldehyde, acetone, 3-hydroxy-2-butanone, 2-nonanone, acetic acid, propionic acid, 3-methyl-butyric acid, ethyl acetate, ethyl butyrate, amyl butyrate, indole, hydrogen sulfide, and trimethylamine are common VOCs released by indoor microorganisms, and their combination can well reflect the activity of microorganisms.

[0006] Several existing technologies for disinfection sprays for microbial contamination are described below.

[0007] China's pending invention patent application CN202010638083.2 discloses a portable, ready-to-use ozone disinfection sprayer that eliminates microorganisms by preparing and spraying high-concentration ozone water, and can be used in offices and public areas. This invention is a typical "non-self-sensing" microbial disinfection device. The amount and time of spraying the disinfectant can only rely on human judgment, and it is difficult to adapt to the actual contamination status of the microorganisms. In most cases, the use of disinfectants occurs after microbial contamination has occurred for some time. There is a lack of effective evaluation of the actual effect of disinfection, and it is easy for a large amount of ozone to remain in the environment after sterilization is completed, or for a second spraying to be required due to insufficient use of disinfectants. In addition, the use of only ozone as a disinfectant can easily lead to drug resistance in microorganisms, reducing the effectiveness of subsequent disinfection.

[0008] Chinese utility model CN207505674U discloses a sheep house with automatic disinfection function, equipped with a self-sensing disinfection spray device. The utility model detects the content of microorganisms inside the sheep house body by setting a microbial detector in the middle of the dividing plate. When the content exceeds the standard, the ozone generator is triggered to start generating ozone for disinfection. However, the specification does not specify which microbial detection method is used. If the "microbial detector" in the specification refers to a mature scientific research microbial online monitoring device, the cost is too high. Moreover, the equipment also only uses ozone as a disinfectant, which can easily lead to drug resistance in microorganisms, especially in places with dense microorganisms such as sheep houses. In addition, the indicator for judging the occurrence of pollution problems in the utility model is the absolute level of microbial activity, but this indicator is very difficult to determine, even with very precise instruments, because the risk levels of different types of microorganisms vary greatly, and determining the accurate absolute level of microbial activity requires very high calibration of the self-sensing equipment, which is very difficult to achieve.

[0009] China's pending invention patent application CN202010257191.5 provides an automatic spray disinfection system for livestock and poultry houses. Similar to the utility model CN207505674U above, it attempts to use fine particulate matter (PM 2.5 ) as the trigger point of the self-sensing disinfection device. This method also has the problems of easily leading to microbial resistance in the field and high measurement difficulty. The most important thing is that bioaerosol is indeed one of the important indicators of microbial levels in the air, but PM 2.5 The absolute concentration of PM2.5 is unlikely to represent the activity of microorganisms, and microorganisms may not even be PM2.5. 2.5 In addition, after disinfection is completed, even if the microorganisms die, PM 2.5 The absolute concentration will not drop quickly, which will continuously trigger the spray device and lead to excessive use of disinfectant.

[0010] How to use a self-sensing design and a simple method that can represent the activity of microorganisms to trigger the disinfection device and change the disinfection intensity, ensure the accurate amount of disinfectant used during the disinfection process, and ensure that the disinfection time is not delayed, and try to avoid the development of drug resistance in microorganisms, is a problem that needs to be solved in the current public health disinfection field. Summary of the invention

[0011] The purpose of the present invention is to provide a self-sensing disinfection spray device, which comprehensively judges the microbial activity through the relevant VOCs and particulate matter concentrations, and uses the growth rate of microbial activity to judge the occurrence of a microbial contamination event. Disinfection begins at the initial stage of the contamination event, and the amount of disinfectant can be gradually increased as the degree of contamination increases. The staggered use of disinfectants can prevent microorganisms from developing drug resistance.

[0012] The technical solution of the present invention is as follows:

[0013] A self-inductive disinfection spray device, comprising an outer cabin and multiple sets of disinfection components composed of a spray head, a spray pump, a disinfectant tank and connecting pipelines. The feature is that in each set of disinfection components, the spray pump and the disinfectant tank are located inside the outer cabin, the spray head is located outside the outer cabin, one end of the spray pump is connected to the disinfectant tank through a pipeline, and the other end is connected to the spray head through a pipeline; one side of the outer cabin is recessed inward, and multiple sensors for microbial monitoring are installed at the recess; an air extraction pump is also provided inside the outer cabin, and the air extraction end of the air extraction pump is connected to the vicinity of the sensors through a pipeline; a display screen and buttons are installed on the outer cabin, and control components are installed inside the outer cabin; the control components are connected to the display screen, buttons, air extraction pump, spray pump and sensors for microbial monitoring, and determine the microbial activity according to the monitoring data of the sensors for microbial monitoring, so as to adjust the working mode of the disinfection components.

[0014] In order to facilitate the movement and fixation of the above self-inductive disinfection spray device, fixed rollers can be installed at the four corners of the bottom surface of the outer cabin. A door is provided on the side of the outer cabin, and the size and position of the door should be convenient for replacing the disinfectant tank. The sensors for microbial monitoring are installed at the recessed part on one side of the outer cabin, and the recess is connected with an air extraction pump, forming an environment that can mechanically protect the sensors and improve the speed of the sensors contacting the outside air. Preferably, a drying tank is installed on the pipeline connecting the air extraction pump and the recess (i.e., the air extraction end pipeline) to prevent the disinfectant solution from entering the air extraction pump.

[0015] The buttons include a start button, a setting button, an up button and a down button, which are mainly used for starting the device and adjusting the flow rate of the spray pump, the single spray time, the timing spraying time point, and the determination condition for the increase of microbial activity.

[0016] Preferably, the outer cabin, spray head, all pipelines and disinfectant tank are made of fluorine-based plastics or other light-weight acid and oxidation-resistant materials to reduce the weight of the entire device and extend the service life of these components after long-term contact with disinfectants.

[0017] The above self-inductive disinfection spray device can adjust the disinfection intensity according to the microbial activity, including selecting the type of disinfectant to be sprayed, adjusting the spray intensity and spray time, etc. Preferably, there should be no less than three sets of disinfection components composed of a disinfectant tank, a spray pump, a spray head and supporting pipelines, and no less than three types of disinfectants should be used. Different disinfectants are respectively placed in different disinfectant tanks and used alternately to reduce the possibility of drug resistance in microorganisms in the disinfected area; different disinfectants should not share pipelines to avoid mutual influence. The disinfectants are preferably disinfectants such as chlorine dioxide at 200 mg / L, peracetic acid at 0.2%, hydrogen peroxide at 3%, and hypochlorous acid at 100 mg / L, which have low mutual interference, less harm to the human body, and are mature and easy to purchase and replace. The flow rate of the spray pump should have no less than three gears. The low-speed gear ensures that the disinfectant is not overused, and the high-speed gear ensures that the microbial pollution outbreak can be quickly controlled. The flow rate of the spray pump and the single spray time should be adjusted comprehensively considering the speed of microbial control, the acceptance of the user, the loss of accessories, and the replacement frequency of the disinfectant.

[0018] Preferably, the direction and height of the spray head and the flow rate of the spray pump should be designed according to the direction of the potential microbial source to ensure that the liquid sprayed by the disinfection spray device can cover the potential area where the microorganisms surge.

[0019] The sensor for microbial monitoring preferably uses a combination of a particulate matter photoelectric sensor, a VOCs PID sensor, and a hydrogen sulfide electrochemical sensor, which has a long service life and a low detection limit. If the types of main microorganisms in the place can be judged, the particulate matter and the gas corresponding to the microorganisms in the place should be monitored; if the types of main microorganisms in the place cannot be determined, the particulate matter in the place, as well as the main gases released during the metabolism of microorganisms such as ethanol, isopentanol, acetaldehyde, acetone, 2-nonanone, ethyl acetate, indole, hydrogen sulfide, and trimethylamine should be monitored.

[0020] During the time period that requires frequent disinfection, multiple disinfectant tanks need to be frequently replaced. The connection between the disinfectant tank and the corresponding pipeline is preferably connected by an infusion joint or other quick connection methods.

[0021] The monitoring data of the sensor for microbial monitoring should be displayed on the display screen to remind of the disinfection effect and the post-treatment method, and the following functions are realized through the cooperation of buttons:

[0022] 1. Settings: By using the setting keys, up-arrow key, and down-arrow key, the flow rate, single spray time, scheduled spraying time point, and determination condition for the increase in microbial activity of the spray pump can be set. The default value of the determination condition for the increase in microbial activity can be set such that at least two sensor signals for microbial monitoring meet the following conditions: the time interval between two monitoring times is a fixed time (such as five minutes), and the intensity of the signal in two consecutive times increases by a certain degree (such as 20%) compared to the previous monitoring. The monitoring interval time, signal increase amplitude, and consecutive increase times should be adjusted according to the actual situation.

[0023] 2. Start: Click the start key, and the air pump and sensors for microbial monitoring will start working simultaneously. The monitoring data of the sensors for microbial monitoring will be displayed on the display screen; according to the monitoring data, different working conditions will occur for the disinfection component:

[0024] 1) If the monitoring data never meets the determination condition for the increase in microbial activity, the spray pump will complete one spraying at a low speed at the scheduled spraying time point.

[0025] 2) If the monitoring data meets the determination condition for the increase in microbial activity, the spray pump will complete one spraying at a low speed; if the monitoring data still meets the determination condition for the increase in microbial activity after spraying, the spray pump will increase one gear to complete one spraying; when the spray pump reaches the highest gear and the monitoring data still meets the determination condition for the increase in microbial activity after spraying, continue to spray at the highest gear, and the display screen will use noise for alarm.

[0026] Regardless of the monitoring data, one disinfectant needs to be switched in sequence for two adjacent sprayings, and the display screen needs to remind to improve the ventilation of the place after each spraying.

[0027] The self-sensing disinfection spray device provided by the present invention comprehensively judges the microbial activity through the concentration of microbial-related VOCs and particulate matter, uses the growth rate of microbial activity to judge the occurrence of microbial pollution events, triggers the disinfection device according to the microbial activity and adjusts the disinfection intensity. Compared with the prior art, it ensures the accurate dosage of disinfectant during the disinfection process, the disinfection time is not lagged, and the staggered use of disinfectants avoids the generation of drug resistance by microorganisms, and can flexibly meet the complex public health disinfection requirements. Description of the Drawings

[0028] Figure 1 is the external view schematic diagram of the self-sensing disinfection spray device in the embodiment;

[0029] Figure 2 is Figure 1 the A-A sectional view of the self-sensing disinfection spray device shown;

[0030] Figure 3 is Figure 2 the B-B sectional view of the self-sensing disinfection spray device shown;

[0031] Figures 1 to 3 Among them: 1 - outer cabin, 2 - roller, 3 - first spray head, 4 - first spray head connecting pipeline, 5 - first spray pump, 6 - first disinfectant tank connecting pipeline, 7 - first disinfectant tank, 8 - second spray head, 9 - second spray head connecting pipeline, 10 - second spray pump, 11 - second disinfectant tank connecting pipeline, 12 - second disinfectant tank, 13 - third spray head, 14 - third spray head connecting pipeline, 15 - third spray pump, 16 - third disinfectant tank connecting pipeline, 17 - third disinfectant tank, 18 - sensor, 19 - sensor fixing base, 20 - air extraction pump, 21 - drying tank, 22 - display screen, 23 - control element, 24 to 27 - buttons (including setting button, up selection button, down selection button, start button), 28 - door. Specific implementation mode

[0032] The present invention will be further described in detail below with reference to the accompanying drawings through embodiments, but the scope of the present invention is not limited in any way.

[0033] As Figures 1 to 3 shown, the spray device for self - sensing disinfection according to the microbial activity in this embodiment is composed of an outer cabin 1, three sets of "disinfection components" (including spray head, spray head connecting pipeline, spray pump, disinfectant tank connecting pipeline, disinfectant tank), a sensor 18, an air extraction pump 20, a display screen 22, a control element 23, and buttons 24 - 27. Among them:

[0034] The outer cabin 1 is a cubic cavity with a length of 800 mm, a width of 800 mm, and a height of 600 mm. Fixed rollers 2 are installed at the four corners of the bottom to fix and move the entire device.

[0035] The first set of "disinfection components" includes: the first disinfectant tank 7 is fixed at the inner bottom of the outer cabin 1, and a rubber cap is used at the top; the first disinfectant tank connecting pipeline 6 is a hard pipe with a diameter of 6 mm, and is connected by inserting a plastic needle into the rubber cap of the first disinfectant tank 7, and the other end is connected to the first spray pump 5; the first spray pump 5 is also fixed at the inner bottom of the outer cabin 1, and its flow rate has three gears: low - speed gear, medium - speed gear, and high - speed gear. The low - speed gear ensures that the disinfectant is not over - used, and the high - speed gear ensures that the microbial pollution outbreak can be quickly controlled; the first spray pump 5 is connected to the first spray head 3 located outside the outer cabin 1 through the first spray head connecting pipeline 4, and the first spray head connecting pipeline 4 is a hard pipe with a diameter of 6 mm, passing through the top surface of the outer cabin 1. The structures of the second and third sets of "disinfection components" are the same as that of the first set of disinfection components, and the three sets are independent of each other.

[0036] The display screen 22 and buttons 24-27 (setting button, up selection button, down selection button, start button) are recessed in the front of the outer cabin 1, and the control element 23 is fixed on the inner side of the front of the outer cabin near the display screen 22; a door 28 is installed on the front of the outer cabin 1, with a size of 300mm×800mm, which is convenient for replacing the first disinfectant tank 7, the second disinfectant tank 12 and the third disinfectant tank 17. One side of the outer cabin 1 is recessed inward to form a 400mm×400mm×200mm recessed cubic space, and a sensor fixing base 19 is installed in the recess, on which a sensor 18 is fixed, and the recess can effectively mechanically protect the sensor. The vacuum pump 20 is fixed to the bottom of the inner side of the outer cabin 1, with a flow rate of 60L / h. Its vacuum end is connected to the vicinity of the sensor 18 for vacuuming, which increases the speed at which the sensor 18 contacts the outside air; a drying tank 21 is installed at the vacuum end of the vacuum pump 20 to prevent liquid from entering the vacuum pump.

[0037] 1. All "disinfection components" except the three spray pumps are made of fluorine-based plastics to extend the service life of these components after long-term contact with strong oxidizing and strong acid disinfectants.

[0038] The first disinfectant tank 7, the second disinfectant tank 12 and the third disinfectant tank 17 are respectively filled with 200 mg / L chlorine dioxide, 0.2% peracetic acid and 100 mg / L hypochlorous acid.

[0039] The positions, directions and heights of the first spray head 3, the second spray head 8 and the third spray head 13 should be designed according to the directions of potential microbial sources to ensure that the liquid sprayed by the disinfection spray device can cover the potential areas where microorganisms proliferate.

[0040] The sensor 18 is composed of a particulate matter photoelectric sensor, a hydrogen sulfide electrochemical sensor, and ethanol, isopentanol, acetaldehyde, acetone, 2-nonanone, ethyl acetate, indole, and trimethylamine PID sensors, which can comprehensively reflect the phenomenon of increased activity of common microorganisms.

[0041] The specific process of using the self-sensing disinfection spray equipment of this embodiment to disinfect a place is as follows:

[0042] The control element 23 is connected with the first spray pump 5, the second spray pump 10, the third spray pump 15, the air pump 20, the sensor 18, the display screen 22 and the buttons 24-27 (setting button, up-adjustment button, down-adjustment button, start button). The following functions are realized through the cooperation of different buttons, the display screen 21 and the control element 22:

[0043] 1. Considering the speed of microbial control, the acceptance of users, the wear of accessories, and the replacement frequency of disinfectants, use the setting key, up key, and down key to set the spraying speed and single spraying time of the three spray pumps. The default low, medium, and high speed values of the three spray pumps are 2 mL / min, 5 mL / min, and 10 mL / min respectively, and the default single spraying time is 5 min.

[0044] 2. Use the setting key, up key, and down key to set the scheduled spraying time, and the default value is 19:00.

[0045] 3. Use the setting key, up key, and down key to set the "judgment condition for the increase in microbial activity", and the default value is: the signals of at least two sensors 18, the time interval between two monitors is five minutes, and the intensity of the signals increases by 20% compared with the previous monitor for two consecutive times.

[0046] 4. Click the start key to start the device. The air pump 20 and the sensor 18 start to work, and the display screen 22 shows the concentrations of particulate matter, hydrogen sulfide, ethanol, isopentanol, acetaldehyde, acetone, 2-nonanone, ethyl acetate, indole, and trimethylamine; according to the monitoring data, different working conditions occur:

[0047] 1) If the "judgment condition for the increase in microbial activity" is never met, one of the three spray pumps will complete a spraying at the scheduled spraying time point using the low speed gear.

[0048] 2) If the monitoring data meets the "judgment condition for the increase in microbial activity", one of the three spray pumps will complete a spraying using the low speed gear; if the monitoring data still meets the judgment condition for the increase in microbial activity after spraying, one of the three spray pumps will increase one gear to complete a spraying; when the spray pump reaches the highest gear and the monitoring data still meets the judgment condition for the increase in microbial activity after spraying, continue to spray using the highest gear, and the display screen 22 will alarm using noise.

[0049] For two adjacent sprayings, one of the three spray pumps needs to be selected in turn to switch to a disinfectant each time, and the display screen 22 needs to remind to improve the ventilation of the place after each spraying.

Claims

1. A self-inductive disinfection spray device, comprising an outer cabin and multiple sets of disinfection components composed of a spray head, a spray pump, a disinfectant tank and connecting pipelines, characterized in that, In each set of disinfection components, the spray pump and the disinfectant tank are located inside the outer cabin, the spray head is located outside the outer cabin, one end of the spray pump is connected to the disinfectant tank through a pipeline, and the other end is connected to the spray head through a pipeline; one side of the outer cabin is recessed inward, and a plurality of sensors for microbial monitoring are installed at the recess; an air extraction pump is also provided inside the outer cabin, and the air extraction end of the air extraction pump is connected to the vicinity of the sensor through a pipeline; a display screen and buttons are installed on the outer cabin, and control components are installed inside the outer cabin; the control components are connected to the display screen, buttons, air extraction pump, spray pump and sensors for microbial monitoring, and determine the microbial activity according to the monitoring data of the sensors for microbial monitoring, so as to adjust the working mode of the disinfection components; There are no less than three sets of the disinfection components, and no less than three types of disinfectants are respectively placed in different disinfectant tanks, and each set is independent of each other; The disinfectant is selected from chlorine dioxide at 200 mg / L, peracetic acid at 0.2%, hydrogen peroxide at 3%, and hypochlorous acid at 100 mg / L; The flow rate of the spray pump is not less than three gears: low, medium and high; The sensors for microbial monitoring are a combination of a particulate matter photoelectric sensor, a volatile organic compound PID sensor, and a hydrogen sulfide electrochemical sensor; The volatile organic compounds include ethanol, isoamyl alcohol, acetaldehyde, acetone, 2-nonanone, ethyl acetate, indole, and trimethylamine; A method for environmental disinfection using a self-inductive disinfection spray device includes: 1) Setting: Set the flow rate of different gears of the spray pump, the single spray time, the timing spraying time point, and the determination condition for the increase in microbial activity through the buttons. The default value of the determination condition for the increase in microbial activity is set to at least two sensor signals for microbial monitoring to meet the following conditions: the time interval between two monitoring times is a fixed time, and the intensity of the two consecutive signals increases to a certain extent compared with the previous monitoring; 2) Starting: The air extraction pump and the sensors for microbial monitoring start working at the same time, and the display screen displays the monitoring data of the sensors for microbial monitoring; adjust the working condition of the disinfection components according to the monitoring data: A. If the monitoring data never meets the determination condition for the increase in microbial activity, the spray pump will complete one spraying at the low speed gear at the timing spraying time point; B. If the monitoring data meets the determination condition for the increase in microbial activity, the spray pump will complete one spraying at the low speed gear; if the monitoring data still meets the determination condition for the increase in microbial activity after spraying, the spray pump will increase one gear to complete one spraying; when the spray pump reaches the highest gear and the monitoring data still meets the determination condition for the increase in microbial activity after spraying, continue to spray at the highest gear, and the display screen will give an alarm using noise; Regardless of the monitoring data, one disinfectant needs to be switched in sequence for two adjacent sprayings, and the display screen needs to remind to improve the ventilation of the place after each spraying.

2. The self-inductive disinfection spray device according to claim 1, wherein, Fixed rollers are installed at the four corners of the bottom surface of the outer cabin; a door is provided on the side surface of the outer cabin for facilitating the replacement of the disinfectant tank.

3. The self-inductive disinfection spray device according to claim 1, wherein, A drying tank is installed on the air extraction end pipeline of the air extraction pump.

4. The self-inductive disinfection spray device according to claim 1, wherein, The materials of the outer cabin, spray head, disinfectant tank and all pipelines are lightweight acid-resistant and oxidation-resistant materials.

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