Air exhausting and filtering device for negative pressure isolation cabin in infectious disease area

Abstract

The utility model provides an air exhaust filtering device for a negative pressure isolation cabin in an infectious disease area, and relates to the technical field of air exhaust filtering devices. The infectious disease area negative pressure isolation cabin exhaust filtering device comprises an exhaust filtering device body, an air inlet pipe is installed at the bottom of the exhaust filtering device body, two exhaust mechanisms are arranged on one side of the exhaust filtering device body, and an air supply mechanism is arranged in the exhaust filtering device body. And the air supply mechanism is used for supplying air in the negative pressure isolation cabin into the air exhaust mechanism. According to the negative pressure isolation cabin exhaust filtering device for the infectious disease area, the blocking mechanism is arranged in the air inlet pipe, and when a filter needs to be replaced, an operator stretches the hand into the negative pressure isolation cabin through an operation hole in the negative pressure isolation cabin and operates the blocking mechanism to block the air inlet pipe; therefore, air in the negative pressure isolation cabin is prevented from entering the exhaust filtering device when the filter is replaced, the infection risk is reduced, and practical application is facilitated.

Description

Technical Field

[0001] This application relates to the technical field of exhaust air filtration devices, specifically an exhaust air filtration device for a negative pressure isolation chamber in an infectious disease area. Background Technology

[0002] In the course of working in infectious disease wards, negative pressure isolation chambers are often used for the isolation and transfer of patients. A negative pressure isolation chamber is an integration of an emergency stretcher and an isolation chamber for infectious disease patients; their organic combination achieves multiple uses. Negative pressure isolation chambers are generally equipped with exhaust filtration devices, which filter the air inside the chamber before expelling it, thereby preventing airborne transmission.

[0003] Traditional negative pressure isolation chambers typically use filters for filtration. After prolonged use, these filters need to be replaced. However, during the replacement process, because the exhaust filtration device lacks an internal filter, air from inside the negative pressure isolation chamber enters the exhaust filtration device. This unfiltered air poses a certain risk of infection and is not conducive to practical application.

[0004] Therefore, those skilled in the art provide an exhaust air filtration device for a negative pressure isolation chamber in an infectious disease area to solve the problems mentioned in the background art. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides an exhaust air filtration device for a negative pressure isolation chamber in an infectious disease area. This solves the problem mentioned in the background technology that when the filter is replaced, air from inside the negative pressure isolation chamber enters the exhaust air filtration device, resulting in this unfiltered air and thus posing a certain risk of infection.

[0006] To achieve the above objectives, this application provides the following technical solution: an exhaust air filtration device for a negative pressure isolation chamber in an infectious disease area, comprising an exhaust air filtration device body, an air inlet pipe installed at the bottom of the exhaust air filtration device body, two exhaust mechanisms provided on one side of the exhaust air filtration device body, and an air supply mechanism provided inside the exhaust air filtration device body, the air supply mechanism being used to supply air from inside the negative pressure isolation chamber to the interior of the exhaust mechanism;

[0007] The air inlet pipe is equipped with a sealing mechanism inside, which is used to seal the air inlet pipe.

[0008] The above technical solution involves installing a sealing mechanism inside the air inlet duct. When the filter needs to be replaced, the operator can insert their hand through the operating hole on the negative pressure isolation chamber into the interior of the negative pressure isolation chamber and operate the sealing mechanism to seal the air inlet duct. This prevents air from inside the negative pressure isolation chamber from entering the exhaust air filter while the filter is being replaced, thereby reducing the risk of infection and facilitating practical application.

[0009] Preferably, the exhaust mechanism includes an exhaust pipe and a filter. The exhaust pipe is installed on one side of the exhaust filter body, and the filter is threadedly connected to the end of the exhaust pipe away from the exhaust filter body.

[0010] The above technical solution allows for convenient purification of the air discharged from the negative pressure isolation chamber using a filter.

[0011] Preferably, the air supply mechanism includes a purification tank, two guide channels, two exhaust fans, a diversion channel, and an ultraviolet lamp. The purification tank is located inside the exhaust filter body, and all exhaust pipes are connected to the interior of the purification tank. The ultraviolet lamp is installed on the top of the inner wall of the purification tank. The diversion channel is located inside the exhaust filter body and below the purification tank. The two guide channels are located between the purification tank and the diversion channel, and the two exhaust fans are respectively installed inside the corresponding guide channels.

[0012] The above technical solution utilizes the operation of an exhaust fan to send the air inside the diversion tank into the purification tank, where it is sterilized by ultraviolet lamps, then discharged through the purification tank, and finally filtered through a filter before being discharged to the outside of the equipment.

[0013] Preferably, the sealing mechanism includes a baffle, a through groove, a spring, a circular plate, a plug, a knob cover, a vent, and a filter screen. The baffle is installed inside the air inlet pipe, the through groove is opened inside the baffle, the spring is fixed to the bottom of the baffle, the circular plate is fixed to the bottom of the spring, the plug is installed on the top of the circular plate and located inside the spring, the top of the plug passes through the through groove and cooperates with the through groove, the knob cover is threaded to the outside of the air inlet pipe, the vents are equidistantly opened at the bottom of the knob cover, and the filter screens are all installed inside the vents.

[0014] Through the above technical solution, the air inside the negative pressure isolation chamber enters the inside of the knob cover through the vent, and then enters the inside of the air inlet pipe through the through groove, and then enters the inside of the diversion groove through the air inlet pipe.

[0015] Preferably, batteries are installed on both sides of the exhaust filter body, and charging ports are provided on the outside of each battery.

[0016] The above technical solution enables the use of storage batteries to power the entire equipment.

[0017] Preferably, a control panel is installed on the top of the exhaust filter body, the exhaust fan and the ultraviolet lamp are electrically connected to the control panel, and the exhaust fan, the ultraviolet lamp and the control panel are all electrically connected to the battery.

[0018] The above technical solution allows for better control of the overall operation of the equipment using a control panel.

[0019] This application provides an exhaust air filtration device for a negative pressure isolation chamber in an infectious disease area, which has the following beneficial effects:

[0020] 1. The exhaust air filtration device of the negative pressure isolation chamber in the infectious disease area has a sealing mechanism installed inside the air inlet pipe. When the filter needs to be replaced, the operator can insert his hand into the inside of the negative pressure isolation chamber through the operating hole on the negative pressure isolation chamber and operate the sealing mechanism to seal the air inlet pipe. This prevents air from inside the negative pressure isolation chamber from entering the exhaust air filtration device when the filter is replaced, thereby reducing the risk of infection and facilitating practical application.

[0021] 2. The exhaust and filtration device of the negative pressure isolation chamber in the infectious disease area, through the combination of air supply and exhaust mechanisms, can quickly exhaust the polluted air inside the negative pressure isolation chamber, facilitating ventilation and filtration. Attached Figure Description

[0022] Figure 1 This is a first-view three-dimensional structural diagram of the present application;

[0023] Figure 2 This is a second-view three-dimensional structural diagram of the present application;

[0024] Figure 3 This is a schematic diagram of the internal cross-sectional structure of this application;

[0025] Figure 4 This is a schematic diagram of the disassembled structure of the sealing mechanism in this application. Figure 1 ;

[0026] Figure 5 This is a schematic diagram of the disassembled structure of the sealing mechanism in this application. Figure 2 ;

[0027] Figure 6 For this application Figure 3 Enlarged view of point A in the middle.

[0028] In the diagram: 1. Main body of the exhaust filter device; 2. Air inlet pipe; 3. Exhaust pipe; 4. Filter; 5. Purification tank; 6. Guide channel; 7. Exhaust fan; 8. Diversion channel; 9. Baffle; 10. Through channel; 11. Spring; 12. Round plate; 13. Plug; 14. Knob cover; 15. Ventilation opening; 16. Filter screen; 17. Battery; 18. Charging port; 19. Control panel; 20. Ultraviolet lamp. Detailed Implementation

[0029] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0030] Reference Figure 1 , Figure 2 and Figure 3 This application provides an exhaust air filtration device for a negative pressure isolation chamber in an infectious disease area, including an exhaust air filtration device body 1. An air inlet pipe 2 is installed at the bottom of the exhaust air filtration device body 1. The outer side of the air inlet pipe 2 is provided with external threads for easy installation of a sealing nut. In use, the air inlet pipe 2 is inserted into the exhaust hole on the negative pressure isolation chamber, and then the sealing nut is screwed on the outer side of the air inlet pipe 2 to seal the gap between the air inlet pipe 2 and the negative pressure isolation chamber, ensuring no air leakage. Batteries 17 are installed on both sides of the exhaust air filtration device body 1, and charging ports 18 are provided on the outer side of each battery 17 for convenient charging. A control panel 19 is installed on the top of the exhaust air filtration device body 1.

[0031] Two exhaust mechanisms are provided on one side of the exhaust filter body 1. An air supply mechanism is installed inside the exhaust filter body 1 to deliver air from inside the negative pressure isolation chamber to the exhaust mechanisms. By combining the air supply mechanism with the exhaust mechanism, polluted air inside the negative pressure isolation chamber can be quickly discharged, facilitating ventilation and filtration. A sealing mechanism is installed inside the air inlet duct 2 to block the air inlet duct 2.

[0032] Reference Figure 3In one aspect of this embodiment, the exhaust mechanism includes an exhaust pipe 3 and a filter 4. The exhaust pipe 3 is installed on one side of the exhaust filter device body 1, and the filter 4 is threadedly connected to the end of the exhaust pipe 3 away from the exhaust filter device body 1. The filter 4 facilitates the purification of the air discharged from the negative pressure isolation chamber. The filter 4 is disclosed in Chinese Patent No. CN202637346U, entitled "An Exhaust Filter Device for a Negative Pressure Isolation Chamber for Infectious Disease Patients," and is considered prior art, so it will not be described in detail here. By setting a sealing mechanism inside the air inlet pipe 2, when the filter 4 needs to be replaced, the operator can insert their hand through the operating hole on the negative pressure isolation chamber into the interior of the negative pressure isolation chamber and operate the sealing mechanism to seal the air inlet pipe 2. This prevents air from inside the negative pressure isolation chamber from entering the exhaust filter device while the filter 4 is being replaced, thereby reducing the risk of infection and facilitating practical application.

[0033] Reference Figure 3 In one aspect of this embodiment, the air supply mechanism includes a purification tank 5, two guide channels 6, two exhaust fans 7, a diversion channel 8, and an ultraviolet lamp 20. The purification tank 5 is located inside the exhaust filter body 1, and all exhaust pipes 3 communicate with the interior of the purification tank 5. The ultraviolet lamp 20 is installed at the top of the inner wall of the purification tank 5, enabling sterilization. The diversion channel 8 is located inside the exhaust filter body 1 and below the purification tank 5. The two guide channels 6 are located between the purification tank 5 and the diversion channel 8, and the two exhaust fans 7 are respectively installed inside the corresponding guide channels 6. The exhaust fans 7 deliver air from the diversion channel 8 to the purification tank 5, where it is sterilized by the ultraviolet lamp 20, then discharged through the purification tank 5, and finally filtered by the filter 4 before being discharged to the outside of the equipment. Both the exhaust fans 7 and the ultraviolet lamp 20 are electrically connected to the control panel 19, allowing for better control of the overall operation of the equipment. The exhaust fan 7, ultraviolet lamp 20 and control panel 19 are all electrically connected to the storage battery 17, which can power the entire equipment.

[0034] Reference Figure 4 , Figure 5 and Figure 6In one aspect of this embodiment, the sealing mechanism includes a baffle 9, a through groove 10, a spring 11, a circular plate 12, a plug 13, a knob cover 14, a vent 15, and a filter screen 16. The baffle 9 is installed inside the air inlet pipe 2, and the through groove 10 is formed inside the baffle 9. The spring 11 is fixed to the bottom of the baffle 9, and the circular plate 12 is fixed to the bottom of the spring 11. The plug 13 is installed on the top of the circular plate 12 and located inside the spring 11; the top of the plug 13 passes through the through groove 10 and cooperates with the through groove 10. The knob cover 14 is threaded onto the outside of the air inlet pipe 2. The vents 15 are equidistantly formed at the bottom of the knob cover 14, and the filters 16 are all installed inside the vents 15. Air inside the negative pressure isolation chamber enters the interior of the knob cover 14 through the vents 15, enters the interior of the air inlet pipe 2 through the through groove 10, and then enters the interior of the diversion groove 8 through the air inlet pipe 2.

[0035] Working principle:

[0036] When in use, first insert the air inlet pipe 2 into the exhaust hole on the negative pressure isolation chamber, then screw the sealing nut on the outside of the air inlet pipe 2 to seal the gap between the air inlet pipe 2 and the negative pressure isolation chamber, ensuring that air will not leak. Then screw the knob cover 14 on the outside of the air inlet pipe 2 so that it contacts the round plate 12 and drives the plug 13 to move upward so that it no longer blocks the through groove 10.

[0037] Then it can be used. The exhaust fan 7 and ultraviolet lamp 20 are controlled by the control panel 19. The air inside the negative pressure isolation chamber enters the inside of the knob cover 14 through the vent 15, and enters the inside of the air inlet pipe 2 through the through groove 10. Then it enters the inside of the diversion groove 8 through the air inlet pipe 2. At the same time, the exhaust fan 7 is used to send the air inside the diversion groove 8 to the inside of the purification tank 5. The air is then sterilized by the ultraviolet lamp 20, and then discharged through the purification tank 5. Finally, it is filtered by the filter 4 and discharged to the outside of the equipment.

[0038] When filter 4 needs to be replaced, the operator inserts their hand into the negative pressure isolation chamber through the operating hole, and then turns the knob cover 14 in the opposite direction to the sealing nut. When the knob cover 14 no longer touches the circular plate 12, the plug 13 moves downward under the action of the spring 11, sealing the through groove 10 again. Then the filter 4 can be replaced. This avoids air from inside the negative pressure isolation chamber from entering the exhaust filter while the filter 4 is being replaced, thereby reducing the risk of infection and benefiting practical applications.

[0039] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An exhaust air filtration device for a negative pressure isolation chamber in an infectious disease area, comprising an exhaust air filtration device body (1), wherein an air inlet pipe (2) is installed at the bottom of the exhaust air filtration device body (1), characterized in that, Two exhaust mechanisms are provided on one side of the exhaust filter body (1), and an air supply mechanism is provided inside the exhaust filter body (1). The air supply mechanism is used to send the air inside the negative pressure isolation chamber to the interior of the exhaust mechanism. The air inlet pipe (2) is provided with a sealing mechanism inside, which is used to seal the air inlet pipe (2); The sealing mechanism includes a baffle (9), a through groove (10), a spring (11), a circular plate (12), a plug (13), a knob cover (14), a vent (15), and a filter screen (16). The baffle (9) is installed inside the air inlet pipe (2). The through groove (10) is opened inside the baffle (9). The spring (11) is fixed to the bottom of the baffle (9). The circular plate (12) is fixed to the bottom of the spring (11). The plug (13) is installed on the top of the circular plate (12) and located inside the spring (11). The top of the plug (13) passes through the through groove (10) and cooperates with the through groove (10). The knob cover (14) is threaded to the outside of the air inlet pipe (2). The vents (15) are equidistantly opened at the bottom of the knob cover (14). The filter screens (16) are all installed inside the vents (15).

2. The exhaust air filtration device for the negative pressure isolation chamber in an infectious disease area according to claim 1, characterized in that: The exhaust mechanism includes an exhaust pipe (3) and a filter (4). The exhaust pipe (3) is installed on one side of the exhaust filter body (1), and the filter (4) is threadedly connected to the end of the exhaust pipe (3) away from the exhaust filter body (1).

3. The exhaust air filtration device for the negative pressure isolation chamber in the infectious disease area according to claim 2, characterized in that: The air supply mechanism includes a purification tank (5), two guide channels (6), two exhaust fans (7), a diversion channel (8), and an ultraviolet lamp (20). The purification tank (5) is located inside the exhaust filter body (1). The exhaust pipes (3) are all connected to the inside of the purification tank (5). The ultraviolet lamp (20) is installed on the top of the inner wall of the purification tank (5). The diversion channel (8) is located inside the exhaust filter body (1) and below the purification tank (5). The two guide channels (6) are located between the purification tank (5) and the diversion channel (8). The two exhaust fans (7) are respectively installed inside the corresponding guide channels (6).

4. The exhaust air filtration device for the negative pressure isolation chamber in the infectious disease area according to claim 3, characterized in that: The exhaust filter device body (1) is equipped with batteries (17) on both sides, and the batteries (17) are provided with charging ports (18) on the outside.

5. The exhaust air filtration device for the negative pressure isolation chamber in an infectious disease area according to claim 4, characterized in that: The exhaust filter body (1) is equipped with a control panel (19) on its top. The exhaust fan (7) and the ultraviolet lamp (20) are electrically connected to the control panel (19). The exhaust fan (7), the ultraviolet lamp (20) and the control panel (19) are all electrically connected to the battery (17).

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