CN111878932A - High-pollution building space air exhaust multi-flow comprehensive killing system and method - Google Patents

Abstract

The invention provides a multi-process comprehensive disinfection system and method for exhausting air in a high-pollution building space. The system includes a negative pressure metal ventilation pipe in a polluted area, and any position on the ventilation pipe is connected to the inlet end of the ventilation pipe with a high-resistance thermal insulation layer. The outlet end of the high-resistance ventilation duct with thermal insulation layer is connected to the inlet end of the outdoor negative pressure metal ventilation duct through the electric anti-backflow valve, and the outlet end of the outdoor negative pressure metal ventilation duct is connected to the air outlet of the high-efficiency variable frequency fan; A variety of virus disinfecting devices are arranged in sequence at the back end of the device. The invention firstly conducts high-temperature sterilization on the air that may contain viruses in the highly polluted building space through electric heating pipes, and then drains the air after high-temperature sterilization to various outdoor virus sterilization devices through negative pressure pipes to diversify the introduced air. It can completely eliminate viruses in the air of highly polluted building spaces.

Description

Multi-process comprehensive disinfection system and method for exhaust air in high-polluting building space

technical field

The invention relates to a multi-process comprehensive sterilization system and method for exhausting high-polluting building space, and belongs to the field of indoor environment treatment.

Background technique

In 2020, the global new crown virus is raging, and it is necessary to disinfect the places where a large number of people infected with the virus used to move to avoid the further spread of the virus. Viruses are very easy to survive in wet and cold environments for a long time, especially in airtight underground spaces or above-ground spaces where external windows cannot be opened. How to ventilate the airtight building space and avoid secondary pollution caused by virus leakage has become a difficult problem to be solved in the industry.

For example, the underground trading hall of a wholesale market has become a high-risk area after the emergency evacuation of the virus-infected merchants. The space is closed, and a large amount of meat left has rotted and deteriorated in high temperature weather. The rotten air has complex components and high concentrations. The possibility of viruses and methane cannot be ruled out. At the same time, due to concerns about secondary pollution caused by virus leakage, the air-conditioning and exhaust systems in the underground trading hall are inactive. How to ventilate the confined space in the shortest time to remove viruses and polluted gases and create relatively safe working conditions for the entry of disinfecting personnel has become the top priority of the "war epidemic".

Studies have shown that viruses can be transmitted in the form of aerosols. The diameter of the new coronavirus is 60nm-220nm, and it has a strong ability to survive in a humid and low-temperature environment. It is difficult and costly to completely filter the new coronavirus through the existing high-efficiency filter. And it is impossible to disinfect the new coronavirus, which is easy to cause incomplete filtering or secondary transmission. In addition, the air duct in the uncontaminated area in front of the filter also lacks effective disinfection methods after being contaminated by viruses.

In view of this, it is necessary to develop a multi-process comprehensive sterilization system for exhaust air in high-polluting buildings.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a multi-process comprehensive disinfection system and method for exhausting air in highly polluted building spaces. First, the air that may contain viruses in the polluted building space is subjected to high temperature disinfection through electric heating pipes, and then the high temperature is eliminated through negative pressure pipes. The sterilized air is drained to the outdoor airtight duct, and a variety of virus sterilization devices are arranged in the airtight duct to diversify and sterilize the introduced air, which can completely remove the viruses in the air in the highly polluted building space.

In order to achieve the above object, in the first aspect, the present invention provides a multi-process comprehensive sterilization system for exhausting air in a high-pollution building space, including a negative pressure metal ventilation pipe in a polluted area, and at least one end of the negative pressure metal ventilation pipe in the polluted area is connected with a The tuyere with primary filter, any position on it is connected to the inlet end of the high-resistance ventilating duct with thermal insulation and insulating layer, and the outlet end of the high-resistance ventilating duct with thermal insulation and insulating layer is connected to the outdoor negative pressure metal through the electric anti-backflow valve The inlet end of the ventilation pipe and the outlet end of the outdoor negative pressure metal ventilation pipe are connected to the air outlet of the high-efficiency variable frequency fan;

Further, the exhaust port of the high-efficiency variable frequency fan is connected to the air inlet of the microporous aerator in the chlorine-containing disinfectant aeration and disinfecting water tank, and the microporous aerator has a plurality of air outlet microporous air, each The air flow discharged from the air outlet micropores forms small air bubbles and enters the chlorine-containing disinfectant aeration and sterilization water tank, and the small air bubbles are fully contacted with the chlorine-containing disinfectant, so that at least a part of the virus aerosol particles in the bubbles are disinfected by chlorine-containing disinfectants. liquid absorption.

Further, the exhaust port of the chlorine-containing disinfectant aeration and disinfecting water tank is connected to a chlorine-containing disinfectant wet film humidifier and disinfector, and the chlorine-containing disinfectant wet film humidifier and disinfector is connected to a humidification pump, and the humidification pump Make the chlorine-containing disinfectant flow out from the upper part of the wet-film humidifier of the chlorine-containing disinfectant wet-film humidifier and disinfector, and slowly flow down along the wet-film surface to infiltrate the entire wet film; the chlorine-containing disinfectant wet-film humidifier and disinfector is sealed in the square. inside the duct.

Further, a medium-efficiency filter section is arranged in the square air duct adjacent to the chlorine-containing disinfectant wet film humidifier and disinfector; filter.

Further, a high-efficiency filter section is arranged in the square air duct adjacent to the medium-efficiency filter section; the high-efficiency filter section is used for high-efficiency filtration of the air flow after the medium-efficiency filtration of the medium-efficiency filter section.

Further, a spraying and disinfecting section is arranged in the square air duct immediately adjacent to the high-efficiency filter section; the spraying and disinfecting section is used for spraying and killing the airflow after the high-efficiency filtering of the high-efficiency filter section with hydrogen peroxide.

Further, an electric anti-backflow valve is provided at the connection between the high-resistance ventilation duct with thermal insulation layer and the outdoor negative pressure metal ventilation duct, and the electric anti-backflow valve is suitable for interlocking closing when the high-efficiency variable frequency fan Effectively prevent the airflow from the outdoor negative pressure metal ventilation pipe from flowing back into the high-resistance ventilation pipe with thermal insulation layer.

Further, an electric pressure-measuring pressure relief valve is connected near the connection between the outdoor negative pressure metal ventilation pipe and the high-resistance ventilating pipe with adiabatic insulation layer, which is used to measure the air pressure in the outdoor negative pressure metal ventilation pipe. When positive pressure occurs in the negative pressure metal ventilation pipe, the electric pressure-measuring pressure relief valve is opened to relieve pressure, preventing the airflow from the outdoor negative pressure metal ventilation pipe from flowing backwards into the high-resistance ventilation pipe with thermal insulation layer.

Further, an air quality monitoring device is provided in the polluted building space, and the air quality monitoring device includes a third controller and an air quality sensor, and the third controller is pre-stored with air quality parameter preset values, which are suitable for The electric anti-backflow valve and the high-efficiency variable frequency fan are opened and closed according to the comparison result between the real-time detection value of the air quality sensor and the preset value of the air quality parameter.

In the second aspect, the present invention provides a multi-process comprehensive sterilization method for exhausting high-polluting building spaces, comprising the following steps: (1) monitoring the air quality in the virus-contaminated building space in real time, if the air quality is not up to standard, the The air in the virus-contaminated building space is drained to the outdoor square air duct through the negative pressure metal ventilation pipe in the polluted area, the high resistance ventilation pipe with thermal insulation layer and the outdoor negative pressure metal ventilation pipe, and the high resistance ventilation pipe with thermal insulation layer is energized. Heat to kill the virus attached to the pipe wall at high temperature; set a high-efficiency variable frequency fan in the square air duct, and connect the outlet end of the outdoor negative pressure metal ventilation pipe to the air outlet of the high-efficiency variable frequency fan to generate negative pressure on the drainage pipe ; Set an electric anti-backflow valve at the connection between the high-resistance ventilation pipe with thermal insulation layer and the outdoor negative pressure metal ventilation pipe, and automatically close the electric anti-backflow valve when the high-efficiency variable frequency fan stops to effectively prevent airflow from the The outdoor negative pressure metal ventilation pipe flows back into the high-resistance ventilation pipe with thermal insulation and insulation layer; an electric pressure measuring and pressure relief valve is connected near the connection between the outdoor negative pressure metal ventilation pipe and the high-resistance ventilation pipe with thermal insulation and insulation layer, It is used to measure the air pressure in the outdoor negative pressure metal ventilation pipe. When positive pressure occurs in the outdoor negative pressure metal ventilation pipe, the electric pressure relief valve is opened to release the pressure to prevent the airflow from flowing backward from the outdoor negative pressure metal ventilation pipe. High-resistance ventilation duct with thermal insulation layer; (2) in the square air duct, at least one of the following disinfection treatment methods is performed on the airflow passing through: chlorine-containing disinfectant aeration disinfection and chlorine-containing disinfectant wet film humidification and disinfection ; The air flow after sterilization treatment is successively subjected to medium-efficiency filtration, high-efficiency filtration and spray oxidant sterilization.

Through the above technical solutions, the present invention can at least achieve the following beneficial effects:

1. It can kill the air duct in the uncontaminated area. The air duct in the uncontaminated area can be sterilized through the ventilation duct with a high-resistance thermal insulation layer, the first electrode contact of the current heating and sterilizing device, and the second electrode contact of the current heating and sterilizing device. Specifically, the AC power supply in the building is used to connect the first electrode contact of the current heating and disinfection device and the second electrode contact of the current heating and disinfection device, respectively, to form a current loop with the high-resistance ventilation duct with thermal insulation and insulation layer. After the power is turned on, the temperature of the heating inner wall rises to above 60 °C, and the temperature of 60 °C-100 °C is maintained for 30 minutes under the control of the temperature control module. disinfect.

2. Use the principle of aeration to completely disinfect the virus. The principle of aeration in water treatment engineering is applied to gas disinfection, and the large flow of gas is subdivided into small bubbles by using a microporous aerator, and then the small bubbles are sent into the chlorine-containing disinfectant, and the small bubbles are mixed with the chlorine-containing disinfectant. The chlorine-containing disinfectant is fully contacted, and the virus aerosol particles in the bubbles are partially absorbed by the chlorine-containing disinfectant, and some are combined with the disinfectant volatilized by the chlorine-containing disinfectant (at the same time absorbing part of the VOC in the airflow). After the virus contacts the chlorine-containing disinfectant It can be sterilized, thereby significantly reducing the virus content in the airflow sent by the fan, and achieving a better sterilization effect than the existing technology of disinfecting the airflow. In addition, in the upper space of the chlorine-containing disinfectant aeration and disinfecting water tank, due to the natural volatilization of the disinfectant, it is filled with the volatilized chlorine-containing disinfectant, and the airflow combines with the volatilized chlorine-containing disinfectant in this space, which can also Play a better disinfecting effect.

3. Equipped with a chlorine-containing disinfectant wet film humidifier. The invention utilizes the principle that the wet film humidifier contacts the water-absorbing film with the air, and the moisture on the film is volatilized to humidify. The working liquid of the wet film humidifier is changed from air to disinfectant. After the disinfectant volatilizes on the wet film, it enters the airflow in the form of disinfectant vapor. The liquid kills the airflow, and the disinfectant vapor with a small particle size is easy to combine with the aerosol in the airflow to effectively disinfect the virus.

4. Equipped with airflow quality monitoring and sampling device and high-efficiency variable frequency fan. It can adjust the speed of the high-efficiency variable frequency fan, change the processing air volume, and decide whether to replace the filter by detecting the quality of the airflow after each processing section. For example, when the air flow quality monitoring and sampling device finds that the air flow quality is not good, the speed of the high-efficiency variable frequency fan can be reduced, that is, the treated air volume can be reduced, the wind speed of the section of the present invention can be reduced, and the air treatment effect can be improved. If the air quality is still poor after reducing the rotational speed and the processing air volume, the filter should be replaced when the air quality is still poor. Fan speed, that is, increasing the air volume processed and increasing the air volume processed per unit time. If the rotation speed is reduced and the processing air volume is reduced, the air quality can be maintained at a high speed and high air volume when the air quality is still good through the airflow quality monitoring and sampling device. If the detected air quality is still worse, reduce the fan speed and air volume.

Through the coordinated operation of airflow quality monitoring and sampling device and high-efficiency variable frequency fan, the airflow treatment effect is ensured, and the treatment effect is not affected by the excessive airflow rate. The filter needs to be replaced, and neither wastes due to premature replacement, nor secondary pollution due to late replacement.

5. Equipped with an air quality monitoring device and a building space negative pressure monitoring device, which can monitor the air quality and negative pressure in the polluted building space in real time, and adjust the equipment in the system to ensure the negative pressure in the polluted building space. , to avoid the leakage of toxic and harmful gases.

Description of drawings

FIG. 1 is a plan layout diagram of an embodiment of a multi-process comprehensive disinfection system for exhausting high-polluting building spaces according to the present invention.

In the figure, the contaminated building space A; the uncontaminated area B; the negative pressure metal ventilation pipe 2 in the contaminated area; the air outlet with the primary filter 3; 5; the second electrode contact of the current heating and disinfection device 6; the electric anti-backflow valve 7; the electric pressure measuring pressure relief valve 8; the outdoor negative pressure metal ventilation pipe 9; the high-efficiency frequency conversion fan 10; Microporous aerator 12; medium-efficiency filter section 17; high-efficiency filter section 18; spraying and disinfecting section 19; air quality monitoring device 26; airflow quality monitoring and sampling device 27; building space negative pressure monitoring device 28; temperature control module 29; Square air duct 30; Chlorine-containing disinfectant wet film humidifying sterilizer 31; Humidifying pump 35.

Detailed ways

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can implement the present invention.

As shown in FIG. 1, an embodiment of the multi-process comprehensive disinfection system for exhausting high-polluting building spaces of the present invention includes a negative pressure metal ventilation pipe 2 in a polluted area, and at least one end of the negative pressure metal ventilation pipe 2 in the polluted area is connected to There is a tuyere 3 with a primary filter, and any position on it is connected to the inlet end of the high-resistance ventilating duct 4 with thermal insulation and insulating layer, and the outlet end of the high-resistance ventilating duct 4 with thermal insulation and insulating layer is connected by an electric anti-backflow valve 7 To the inlet end of the outdoor negative pressure metal ventilation pipe 9, the outlet end of the outdoor negative pressure metal ventilation pipe 9 is connected to the air outlet of the high-efficiency variable frequency fan 10; the two ends of the high-resistance belt insulation layer ventilation pipe 4 are electrically connected to the power supply. Fig. 1 shows that both ends of the negative pressure metal ventilation pipe 2 in the polluted area are connected with air outlets 3 with primary filters, and the middle pipe wall of the negative pressure metal ventilation pipe 2 in the polluted area is connected to the high resistance ventilation pipe 4 with a thermal insulation layer. At the inlet end, the connection is sealed to prevent gas leakage, so that a closed airflow path is formed between the negative pressure metal ventilation pipe 2 in the polluted area and the ventilation pipe 4 with a high-resistance thermal insulation layer.

The negative pressure metal ventilation pipe 2 in the polluted area is set at a high position in the polluted area, and the virus-contaminated air is discharged from the air outlet 3 with the primary filter into the negative pressure metal ventilation pipe 2 in the polluted area, and then enters the high resistance ventilation pipe 4 with a thermal insulation layer. . A building space negative pressure monitoring device 28 is installed in the polluted building space A, and the building space negative pressure monitoring device 28 includes a second controller and an air pressure sensor; the second controller is pre-stored with a preset air pressure, which is suitable for The rotational speed of the high-efficiency variable frequency fan 10 is adjusted according to the comparison result between the real-time detection value of the air pressure sensor and the preset air pressure value, so as to maintain the air pressure in the polluted building space A within the preset air pressure range Inside. When the building space negative pressure monitoring device 28 detects that the negative pressure in the polluted building space A is not up to standard, that is, when it is higher than the preset air pressure value, the rotational speed of the high-efficiency variable frequency fan 10 is increased, the exhaust air volume is increased, and the polluted building space is maintained The negative pressure in A prevents the air in the polluted building space A from leaking out. The negative pressure metal ventilation pipe 2 in the polluted area and the ventilation pipe 4 with a high-resistance thermal insulation layer maintain the negative pressure in the pipe under the action of the high-efficiency variable frequency fan 10 . The tuyere with primary effect filter 3 is an tuyere provided with a coarse filter or a filter screen. The high-resistance ventilation duct 4 with thermal insulation layer is made of austenitic stainless steel tube or other metal material with high electrical resistance, and is wrapped with thermal insulation layer outside to prevent leakage and reduce heat loss during energization. Both ends of the high-resistance ventilation duct 4 with thermal insulation layer are respectively connected with the first electrode contact 5 of the current heating and sterilizing device and the second electrode contact 6 of the current heating and sterilizing device, and the live wire and the neutral wire of the 380V or above power supply are connected to the two electrodes, A conductive path is formed with the ventilation duct 4 with a high-resistance thermal insulation layer, and the high-resistance ventilation duct 4 with thermal insulation and insulation layer heats up when energized, and the temperature rises. The first electrode contact 5 of the current heating and sterilizing device and the second electrode contact 6 of the current heating and sterilizing device are copper terminals with a protective cover, one end is connected to the ventilation duct 4 with a high-resistance thermal insulation layer, and the other end is connected to the power supply. A temperature control module 29 is provided on the ventilation duct 4 with a high-resistance thermal insulation layer, and the temperature control module 29 includes a first controller and a temperature sensor arranged on the inner wall of the ventilation duct 4 with a thermal insulation and insulation layer of the high-resistance strip; A preset temperature is pre-stored in a controller, which is adapted to control the on-off of the power supply according to the comparison result between the real-time detection value of the temperature sensor and the preset value, so as to connect the high-resistance with a thermal insulation layer The temperature of the ventilation duct 4 is maintained within the preset temperature range. The high-resistance belt insulation layer ventilation duct 4 generates heat after being energized, and the temperature of the inner wall rises to above 60°C. Under the control of the temperature control module 29, the temperature of 60°C-100°C can be maintained for 30 minutes, and the adsorption on the high-resistance belt can be realized. High temperature disinfecting of viruses on the surface of the ventilation duct 4 of the thermal insulation layer. The electric anti-backflow valve 7 is installed at the connection between the high-resistance ventilation duct 4 with heat-insulating insulation layer and the outdoor negative pressure metal ventilation duct 9 . When the high-efficiency variable frequency fan 10 suddenly stops during high-speed operation, the airflow pressure of the outdoor negative pressure metal ventilation duct 9 fluctuates, which may cause the airflow to flow back instantaneously, from the outdoor negative pressure metal ventilation duct 9 back to the high-resistance thermal insulation layer. In the ventilation duct 4, a positive air pressure in the ventilation duct 4 with a high-resistance thermal insulation layer is formed in an instant relative to the uncontaminated building space, which is easy to cause poisonous and harmful substances such as viruses in the ventilation duct 4 with a high-resistance thermal insulation layer. Diffusion from the inside of the pipeline to the outside of the pipeline, resulting in contamination of the uncontaminated area B. Therefore, an electric anti-backflow valve 7 is provided at the connection between the high-resistance ventilation duct 4 with thermal insulation layer and the outdoor negative pressure metal ventilation duct 9, and the electric anti-backflow valve 7 is interlocked and closed when the high-efficiency variable frequency fan 10 is shut down to effectively prevent backflow. In addition, an electric pressure-measuring pressure relief valve 8 is connected near the connection between the outdoor negative pressure metal ventilation pipe 9 and the high-resistance thermal insulation layer ventilation pipe 4, which is used to measure the air pressure in the outdoor negative pressure metal ventilation pipe 9. When When there is a positive pressure in the outdoor negative pressure metal ventilation pipe 9, and there is a risk of the airflow backflowing back to the high-resistance ventilation duct 4 with thermal insulation layer, open the electric pressure-measuring pressure relief valve 8 to relieve pressure to prevent the airflow from backflowing.

In an embodiment of the multi-process comprehensive disinfection system for exhausting high-polluting building spaces of the present invention, the exhaust port of the high-efficiency variable frequency fan 10 is connected to the microporous aerator in the chlorine-containing disinfectant aeration and disinfection water tank 11 The air inlet of 12, the microporous aerator 12 has a plurality of air outlet micropores, and the air flow discharged from each of the air outlet micropores forms small bubbles into the chlorine-containing disinfectant aeration and disinfecting water tank 11, and the small bubbles and The chlorine-containing disinfectant is fully contacted, so that at least a part of the virus aerosol particles in the bubbles are absorbed by the chlorine-containing disinfectant, and the other part is combined with the disinfectant volatilized by the chlorine-containing disinfectant, while absorbing part of the volatile organic compounds (VOCs) in the airflow. ), the virus is disinfected after contacting the chlorine-containing disinfectant, thereby significantly reducing the virus content in the airflow sent by the high-efficiency variable frequency fan 10. In the upper space of the chlorine-containing disinfectant aeration and disinfecting water tank 11, due to the natural volatilization of the disinfectant, it is filled with the volatilized chlorine-containing disinfectant, and small air bubbles float to the upper space of the chlorine-containing disinfectant aeration and disinfecting water tank 11. burst. The aerosol with virus remaining in the airflow is further contacted with the chlorine-containing disinfectant volatile gas (ie, the disinfectant vapor) filled in the upper space, and the virus in the airflow is further eliminated.

In an embodiment of the multi-process comprehensive disinfection system for exhausting high-polluting building spaces of the present invention, the exhaust port of the chlorine-containing disinfectant aeration and disinfecting water tank 11 is connected to the chlorine-containing disinfectant wet film humidifier 31, The chlorine-containing disinfectant wet film humidifier 31 is connected to a humidification pump 35, and the humidification pump 35 makes the chlorine-containing disinfectant flow out from the upper part of the wet film humidifier of the chlorine-containing disinfectant wet film humidifier 31, along the wet film. The surface slowly flows down to infiltrate the entire wet film; the chlorine-containing disinfectant wet film humidifier 31 is sealed in the square air duct 30 . When the airflow passes through the wet film, the chlorine-containing disinfectant on the wet film volatilizes quickly and enters the airflow to disinfect the residual virus in the airflow. At the same time, part of the VOC in the airflow is absorbed by the chlorine-containing disinfectant on the wet film. The humidification pump 35 can be selected as a low-flow variable frequency pump with the pump body and vanes made of plastic.

In an embodiment of the multi-process comprehensive disinfection system for exhausting high-polluting building spaces of the present invention, the square air duct 30 is provided with a medium-efficiency filter section 17, The high-efficiency filter section 18 and the spraying and disinfecting section 19; the medium-efficiency filter section 17 is used for medium-efficiency filtration of the airflow sterilized by the ultraviolet lamp intensive array 15, and the high-efficiency filter section 18 is used for The air flow after the medium-efficiency filtration in the medium-efficiency filtering section 17 is subjected to high-efficiency filtration, and the spraying and disinfecting section 19 is used for spraying hydrogen peroxide to disinfect the air-flow after the high-efficiency filtering in the high-efficiency filtering section 18. Hydrogen peroxide can be decomposed into water and oxygen, which is less harmful to the environment. The medium-efficiency filter in the medium-efficiency filter section 17 and the high-efficiency filter in the high-efficiency filter section 18 cannot be cleaned, and are disposable consumables. Other parts can be used repeatedly and repeatedly, and cleaned when necessary.

In an embodiment of the multi-process comprehensive disinfection system for exhausting high-polluting building spaces of the present invention, each processing section is also provided with an airflow quality monitoring and sampling device 27 for monitoring the quality (quality) of the airflow after passing through each processing section. . The device can monitor the air temperature, humidity, speed, PM2.5 and other particulate matter content, VOC content, and chlorine-containing disinfectant content in real time, and sample the air at regular intervals. Among them, the VOC content can represent the pollutant content in the air, and the interval sampling is completed by the micro air pump and a plurality of small sampling containers in the airflow quality monitoring and sampling device 27 . At regular intervals, the small sampling container can be taken out from the airflow quality monitoring and sampling device 27 and sent to the laboratory for virus detection to determine whether there is still residual virus in the airflow. When the airflow quality monitoring and sampling device 27 detects that the VOC content in the airflow exceeds the standard, or the chlorine-containing disinfectant content is too low, it indicates that the degree of airflow treatment is not enough at this time, and it is necessary to adjust the high-efficiency variable frequency fan 10 to reduce the rotational speed, thereby reducing the The air supply volume, thereby reducing the treatment air flow (treatment load) of the chlorine-containing disinfectant aeration and disinfecting water tank 11 and the microporous aerator 12, thereby improving the treatment effect. On the contrary, when various parameters are far better than the relevant indexes determined according to the prior art, the rotational speed of the high-efficiency variable frequency fan 10 is increased, thereby increasing the air supply volume and improving the processing efficiency.

The parameters obtained by the airflow quality monitoring and sampling device 27 are also an important basis for judging whether to replace the filter. When the air quality monitoring parameters after the mid-efficiency filter section 17 or the high-efficiency filter section 18 are not good (for example, the VOC content is too high) or the virus residue is detected, the corresponding filter needs to be replaced as soon as possible.

In an embodiment of the multi-process comprehensive disinfection system for exhausting high-polluting building spaces of the present invention, the polluted building space A is provided with an air quality monitoring device 26, and the air quality monitoring device 26 includes a third controller and an air quality sensor, The third controller is pre-stored with a preset value of air quality parameters, which is suitable for opening and closing the electric anti-backflow valve according to the comparison result between the real-time detection value of the air quality sensor and the preset value of the air quality parameter 7. High-efficiency variable frequency fan 10, humidification pump 35, etc. to disinfect or stop the work of disinfecting.

An embodiment of the multi-process comprehensive sterilization method for exhausting high-pollution building spaces of the present invention includes the following steps: (1) monitoring the air quality in the virus-contaminated building space in real time, if the air quality does not meet the standard, then the virus-contaminated buildings will be The air in the space is drained to the outdoor square air duct 30 through the negative pressure metal ventilation pipe 2 in the polluted area, the high resistance ventilation pipe 4 with thermal insulation and insulation layer, and the outdoor negative pressure metal ventilation pipe 9 to the outdoor square air pipe 30. Electric heating is carried out to kill the virus attached to the pipe wall at a high temperature; a high-efficiency variable frequency fan 10 is set in the square air duct 30, and the outlet end of the outdoor negative pressure metal ventilation pipe 9 is connected to the air outlet of the high-efficiency variable frequency fan 10. A negative pressure is generated on the drainage pipeline; an electric anti-backflow valve 7 is set at the junction of the high-resistance belt insulation ventilation duct 4 and the outdoor negative pressure metal ventilation duct 9, and the electric anti-flow valve 7 is automatically closed when the high-efficiency variable frequency fan 10 stops. A reverse flow valve 7 to effectively prevent airflow from the outdoor negative pressure metal ventilation pipe 9 back into the high-resistance ventilation pipe 4 with thermal insulation and insulation layer; An electric pressure measuring pressure relief valve 8 is connected near the connection of the ventilation duct 4 to measure the air pressure in the outdoor negative pressure metal ventilation pipe 9. When positive pressure occurs in the outdoor negative pressure metal ventilation pipe 9, the electric pressure measurement is turned on. The pressure relief valve 8 releases the pressure to prevent the airflow from the outdoor negative pressure metal ventilation pipe 9 from flowing back into the high-resistance thermal insulation layer ventilation pipe 4; (2) in the square air duct 30, the airflow passing through is eliminated as follows: At least one of the killing treatment methods: chlorine-containing disinfectant aeration and disinfection and chlorine-containing disinfectant wet film humidification and disinfection; the air flow after the disinfection treatment is sequentially subjected to medium-efficiency filtration, high-efficiency filtration and spray oxidant disinfection. The specific implementation of the exhaust air, aeration, filtering, spraying and disinfecting has been described in the above-mentioned embodiments of the system of the present invention, and will not be repeated here.

While the basic principles, main features and advantages of the present invention have been shown and described above, it will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but without departing from the spirit or essential characteristics of the present invention In the following, the present invention can be implemented in other specific forms. Therefore, the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, which are therefore intended to fall within the scope of the appended claims. All changes within the meaning and scope of the equivalents of , are included in the present invention.

In addition, it should be understood that although this specification is described in terms of embodiments, not each embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Technical personnel, within the scope of the technical solution of the present invention, can use the technical content disclosed above to be changed or modified into equivalent embodiments of equivalent changes, but any content that does not depart from the technical solution of the present invention is based on the technical essence of the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the technical solutions of the present invention.

Claims (10)

1. The multi-flow comprehensive air exhaust killing system for the high-pollution building space is characterized by comprising a pollution area negative-pressure metal ventilation pipe (2), wherein at least one end of the pollution area negative-pressure metal ventilation pipe (2) is connected with an air port (3) with a primary filter, any position on the pollution area negative-pressure metal ventilation pipe is communicated with the inlet end of a high-resistance area heat-insulation-layer ventilation pipe (4), the outlet end of the high-resistance area heat-insulation-layer ventilation pipe (4) is connected to the inlet end of an outdoor negative-pressure metal ventilation pipe (9) through an electric backflow prevention valve (7), and the outlet end of the outdoor negative-pressure metal ventilation pipe (9) is connected to an air suction port of a high; the two ends of the high-resistance ventilation pipeline (4) with the heat-insulating layer are electrically connected to a power supply.

2. The high-pollution building space air-exhausting multi-flow comprehensive killing system according to claim 1, wherein an air outlet of the high-efficiency variable-frequency fan (10) is connected to an air inlet of a microporous aerator (12) in a chlorine-containing disinfectant aeration and killing water tank (11), the microporous aerator (12) is provided with a plurality of air-outlet microporous gases, the air flow discharged from each air-outlet microporous forms small bubbles to enter the chlorine-containing disinfectant aeration and killing water tank (11), and the small bubbles are in sufficient contact with the chlorine-containing disinfectant to enable at least a part of virus aerosol particles in the bubbles to be absorbed by the chlorine-containing disinfectant.

3. The system for exhausting and multi-flow comprehensive disinfection and sterilization of the highly polluted building space according to claim 2, wherein the exhaust port of the chlorine-containing disinfectant aeration disinfection and sterilization water tank (11) is connected to a chlorine-containing disinfectant wet film humidification disinfector (31), the chlorine-containing disinfectant wet film humidification disinfector (31) is connected to a humidification pump (35), the humidification pump (35) makes the chlorine-containing disinfectant flow out of the upper part of the wet film humidifier of the chlorine-containing disinfectant wet film humidification disinfector (31) and slowly flow down along the surface of the wet film to infiltrate the whole wet film; the chlorine-containing disinfectant wet film humidifying sterilizer (31) is sealed in the square air pipe (30).

4. The high-pollution building space air-exhausting multi-flow comprehensive killing system as claimed in claim 3, wherein an intermediate-effect filtering section (17) is arranged in the square air pipe (30) and next to the chlorine-containing disinfectant wet film humidifying sterilizer (31); the medium-efficiency filtering section (17) is used for performing medium-efficiency filtering on the airflow disinfected by the ultraviolet lamp dense array (15).

5. The high-pollution building space air-discharge multi-flow comprehensive killing system as claimed in claim 4, wherein a high-efficiency filtering section (18) is arranged in the square air duct (30) and is close to the middle-efficiency filtering section (17); the high-efficiency filtering section (18) is used for efficiently filtering the air flow subjected to the intermediate-efficiency filtering in the intermediate-efficiency filtering section (17).

6. The high-pollution building space air-discharge multi-flow comprehensive killing system as claimed in claim 5, wherein a spray killing section (19) is arranged in the square air duct (30) adjacent to the high-efficiency filtering section (18); the spraying sterilization section (19) is used for spraying hydrogen peroxide to the air flow which is efficiently filtered by the efficient filtering section (18) for sterilization.

7. The high-pollution building space air exhaust multi-flow comprehensive killing system according to claim 1, wherein an electric backflow prevention valve (7) is arranged at the joint of the high-resistance heat-insulation-layer ventilation duct (4) with the outdoor negative-pressure metal ventilation duct (9), and the electric backflow prevention valve (7) is suitable for being closed in a linkage manner when the high-efficiency variable-frequency fan (10) is shut down, so that airflow is effectively prevented from flowing back into the high-resistance heat-insulation-layer ventilation duct (4) from the outdoor negative-pressure metal ventilation duct (9).

8. The high-pollution building space multi-flow comprehensive killing system that airs exhaust of claim 7, characterized in that, on outdoor negative pressure metal ventilation pipe (9) with near the junction of high resistance area adiabatic insulation layer ventilation pipe (4) is connected with electronic pressure measurement relief valve (8) for measure the atmospheric pressure in outdoor negative pressure metal ventilation pipe (9), when positive pressure appears in outdoor negative pressure metal ventilation pipe (9), electronic pressure measurement relief valve (8) are opened and are carried out the pressure release, prevent that the air current from outdoor negative pressure metal ventilation pipe (9) refluence and go into high resistance area adiabatic insulation layer ventilation pipe (4).

9. The system for multi-flow comprehensive air exhaust elimination and killing in the highly polluted building space according to claim 8, wherein an air quality monitoring device (26) is arranged in the polluted building space, the air quality monitoring device (26) comprises a third controller and an air quality sensor, and an air quality parameter preset value is prestored in the third controller and is suitable for opening and closing the electric backflow prevention valve (7) and the high-efficiency variable frequency fan (10) according to a comparison result between a real-time detection value of the air quality sensor and the air quality parameter preset value.

10. The multi-flow comprehensive air exhaust killing method for the high-pollution building space is characterized by comprising the following steps of:

(1) monitoring the air quality in the building space polluted by the viruses in real time, if the air quality does not reach the standard, conducting the air in the building space polluted by the viruses to an outdoor air pipe (30) through a negative-pressure metal ventilation pipe (2) in a polluted area, a ventilation pipe (4) with a high-resistance heat-insulating layer and an outdoor negative-pressure metal ventilation pipe (9) in sequence, and electrifying and heating the ventilation pipe (4) with the high-resistance heat-insulating layer to kill viruses attached to the pipe wall at high temperature; arranging a high-efficiency variable-frequency fan (10) in the square air pipe (30), and connecting the outlet end of the outdoor negative-pressure metal ventilation pipe (9) to an air suction port of the high-efficiency variable-frequency fan (10) to generate negative pressure on a drainage pipeline; an electric backflow prevention valve (7) is arranged at the joint of the high-resistance ventilation pipeline (4) with the heat-insulating layer and the outdoor negative-pressure metal ventilation pipeline (9), and when the high-efficiency variable-frequency fan (10) is stopped, the electric backflow prevention valve (7) is automatically closed so as to effectively prevent airflow from flowing back into the high-resistance ventilation pipeline (4) with the heat-insulating layer from the outdoor negative-pressure metal ventilation pipeline (9); an electric pressure measuring and relieving valve (8) is connected to the position, close to the connection position of the outdoor negative pressure metal ventilation pipe (9) and the high-resistance heat-insulation-layer-band ventilation pipe (4), and is used for measuring the air pressure in the outdoor negative pressure metal ventilation pipe (9), when positive pressure occurs in the outdoor negative pressure metal ventilation pipe (9), the electric pressure measuring and relieving valve (8) is opened for pressure relief, and airflow is prevented from flowing back into the high-resistance heat-insulation-layer-band ventilation pipe (4) from the outdoor negative pressure metal ventilation pipe (9);

(2) at least one of the following disinfection and killing treatment modes is carried out on the air flow flowing through the square air pipe (30): aerating and disinfecting the chlorine-containing disinfectant and humidifying and disinfecting the chlorine-containing disinfectant by a wet film; and (3) sequentially carrying out medium-effect filtration, high-efficiency filtration and oxidant spraying for killing on the air flow after the killing treatment.

Images