Positive-pressure electric air supply respiratory protection system, maintenance storage box and maintenance method

Abstract

The present invention discloses a positive-pressure electric air supply breathing protection system, a maintenance and arrangement box, and a maintenance method, which includes a protective housing, a cover plate, and a ventilation hood. One side of the protective housing is open, and a reusable main filter material is arranged on the open side. A cover plate is also buckled on the open side of the protective housing. An air inlet is provided at the bottom of the cover plate, and an air outlet is provided at the top of the protective housing. The main filter material made of ePTFE polytetrafluoroethylene air filtration membrane is used, and combined with the regular disinfection and cleaning of the maintenance and arrangement box, the relative service time of the filter material becomes longer, thereby reducing the cost of discarding the filter material. By using the second ultraviolet lamp and starting and reversing the forward and reverse axial-flow electric fan, the dirt blocked on the main filter material is cleaned and the dirt is concentrated on the secondary protective filter material to complete the disinfection and maintenance of the positive-pressure electric air supply breathing protection system. The disinfection and maintenance process is simple and efficient. At the same time, in special cases, the alarm lamp, the secondary insurance filter material, and the backup battery can still ensure the normal operation of the system.

Description

Technical Field

[0001] The present invention relates to the field of protective equipment, and particularly to a positive pressure electric air supply respiratory protection system, a maintenance and sorting box, and a maintenance method. Background Art

[0002] The safety protection level of the positive pressure respiratory protection system is higher than that of the negative pressure respiratory protection equipment.

[0003] At present, the vast majority of electric air supply respiratory protection products on the market are industrial safety protection equipment, mainly dealing with hazards in industrial environments such as particulate matter, aerosols, and organic gases, and using disposable filter materials with a limited number of uses. When dealing with public health emergencies, because it mainly deals with the microbial environment, the filter material has a relatively short service life, the cost of discarding the filter material is high, and the cleaning and disinfection process is cumbersome, making it difficult to popularize and use. Summary of the Invention

[0004] The purpose of the present invention is to provide a positive pressure electric air supply respiratory protection system, a maintenance and sorting box, and a maintenance method to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A positive pressure electric air supply respiratory protection system, including a protective housing, a cover plate, and a ventilation hood. One side of the protective housing is open, and a reusable main filter material is provided on the open side. A cover plate is also buckled on the open side of the protective housing. An air inlet is provided at the bottom of the cover plate, and an air outlet is provided at the top of the protective housing. A battery is provided outside the protective housing. An electric fan is provided in the air outlet. An inner tube is provided in the ventilation hood, and the inner tube is connected to the air outlet through an air supply pipe. A detachable secondary safety filter material is provided between the ventilation hood and the air supply pipe. A backpack system is also provided on the side of the protective housing, and a controller is installed in the backpack system. The electric fan and the battery are both electrically connected to the controller through a first wire.

[0007] The main filter material is made of ePTFE polytetrafluoroethylene air filtration membrane.

[0008] The electric fan is a forward and reverse rotation axial flow fan.

[0009] The inner tube is arc-shaped and fixedly installed on the top of the ventilation hood, and several ventilation holes are also provided at the bottom of the inner tube.

[0010] The backpack system includes two telescopic and adjustable shoulder straps. The two ends of the shoulder straps are respectively hinged to the top and bottom of the protective housing. A separable chest strap is also provided between the two shoulder straps, and the controller is provided on the chest strap.

[0011] Several of the first wires are bundled to form a wire group, and the wire group is fixedly connected to the shoulder strap.

[0012] An alarm lamp and a backup battery are also provided outside the protective housing. A first ultraviolet lamp is also provided inside the protective housing. An air cleanliness sensor and a wind pressure sensor are also provided inside the air outlet. The alarm lamp, the backup battery, the air cleanliness sensor, the first ultraviolet lamp, and the wind pressure sensor are all electrically connected to the controller through a first wire.

[0013] A maintenance and storage box for a positive pressure electric air supply respiratory protection system includes a box body and a box cover. One side of the box body is open, and the box cover is hinged to the open side. A sealing groove is provided at the open side of the box body, and a sealing strip is installed in the sealing groove. A power supply and a second ultraviolet lamp are provided inside the box body. A switch, a power socket, and a plug are provided on the power supply. The plug is located inside the box body, and the power socket and the switch extend from the side wall of the box body to the outside of the box body. The power supply is electrically connected to the second ultraviolet lamp through a second wire, and the plug is arranged in a matching manner with the controller.

[0014] A buckle for opening and closing the maintenance and storage box is also provided on the side of the maintenance and storage box. A plurality of side handles are provided on the side of the box body, and an upper handle is provided on the box cover.

[0015] A maintenance method for the maintenance and storage box includes the following steps:

[0016] S1. After the positive pressure electric air supply respiratory protection system is used up, turn the wind speed adjustment switch of the electric blower to the maximum air volume position;

[0017] S2. Spray the positive pressure electric air supply respiratory protection system with disinfectant water for preliminary disinfection and cleaning;

[0018] S3. Remove the secondary protection filter material and install it on the air inlet;

[0019] S4. Put the whole positive pressure electric air supply respiratory protection system into the maintenance and storage box, and at the same time plug the plug into the controller;

[0020] S5. Close the box cover, connect the power supply through the power socket and the power cord, and press the power switch;

[0021] S6. The controller first starts the second ultraviolet lamp, uses ultraviolet light irradiation to kill microorganisms, then starts and reverses the electric blower, and the electric blower blows air into the protective housing to clean the dirt blocked on the main filter material and concentrate the dirt on the secondary protection filter material. While maintaining the positive pressure electric air supply respiratory protection system, the controller also controls the power supply to charge the battery and the backup battery.

[0022] The beneficial effects of the present invention are:

[0023] 1. The main filter material made of reusable ePTFE polytetrafluoroethylene air filtration membrane is arranged on the opening side of the protective housing, and combined with the regular disinfection and cleaning of the maintenance and sorting box, the relative service life of the filter material becomes longer, thereby reducing the cost of discarding the filter material.

[0024] 2. The auxiliary protective filter material is installed on the air inlet. By using the second ultraviolet lamp and starting and reversing the forward and reverse axial flow electric fan, the dirt blocked on the main filter material is cleaned, and the dirt is concentrated on the auxiliary protective filter material, completing the maintenance and disinfection of the positive pressure electric air supply respiratory protection system. The disinfection and maintenance process is simple and efficient. At the same time, the power supply can also charge the battery and the backup battery, greatly reducing the preparation time for reuse after the maintenance of the protection system.

[0025] 3. During the filtration operation, if dangerous situations such as too low air pressure, too low air pressure, decreased cleanliness of the filtered air, and too low power / voltage of the power supply occur, the controller will control the alarm lamp to alarm. In this case, the auxiliary insurance filter material can still ensure the filtration of the system, and the backup battery can supply power as a substitute, thereby ensuring the normal operation of the system under special circumstances. Brief Description of the Drawings

[0026] Figure 1 It is a schematic structural diagram of a positive pressure electric air supply respiratory protection system;

[0027] Figure 2 It is a rear view structural schematic diagram after the protective housing and the cover plate of the positive pressure electric air supply respiratory protection system are assembled;

[0028] Figure 3 It is a side view structural schematic diagram of the protective housing of the positive pressure electric air supply respiratory protection system;

[0029] Figure 4 It is a side view structural schematic diagram of the cover plate of the positive pressure electric air supply respiratory protection system;

[0030] Figure 5 It is a front view structural schematic diagram after the protective housing and the backpack system of the positive pressure electric air supply respiratory protection system are assembled;

[0031] Figure 6 It is a structural schematic diagram of the ventilation hood of the positive pressure electric air supply respiratory protection system;

[0032] Figure 7 For the present invention Figure 6 The partial enlarged structural schematic diagram at A in;

[0033] Figure 8 It is a structural schematic diagram when the maintenance and sorting box is in the closed state;

[0034] Figure 9It is a schematic structural diagram when the storage box is in the open state.

[0035] In the figure: protective housing 1, cover plate 2, air inlet 2.1, air outlet 1.1, electric blower 1.11, air pressure sensor 1.12, alarm light 1.2, battery 1.3, backup battery 1.4, first ultraviolet lamp 1.5, main filter material 1.6, shoulder strap 3, wire group 4, secondary insurance filter material 5, air supply pipe 6, chest strap 7, controller 8, buckle 9, ventilation hood 11, inner pipe 11.1, ventilation holes 11.11;

[0036] Box body 21, power supply 22, power supply socket 23, switch 24, plug 25, second ultraviolet lamp 26, buckle 27, box cover 28, side handle 29, upper handle 30. Specific embodiments

[0037] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following.

[0038] Please refer to Figures 1-9 , a positive pressure electric air supply respiratory protection system, including a protective housing 1, a cover plate 2 and a ventilation hood 11. One side of the protective housing 1 is open, and a main filter material 1.6 made of ePTFE polytetrafluoroethylene air filtration membrane that can be reused is arranged on the open side. Using a filter material made of ePTFE polytetrafluoroethylene air filtration membrane, the filtration efficiency can reach over 99.99%.

[0039] A cover plate 2 is also buckled on the open side of the protective housing 1. An air inlet 2.1 is provided at the bottom of the cover plate 2. (The air inlet 2.1 can be designed as a circular tube, and a gas filter can be installed at the air inlet 2.1 in an environment with organic vapor and acidic gas.) An air outlet 1.1 is provided at the top of the protective housing 1. An alarm light 1.2, a battery 1.3 and a backup battery 1.4 are arranged outside the protective housing 1. This system adopts a dual-battery power supply structure. A first ultraviolet lamp 1.5 is arranged inside the protective housing 1. A forward and reverse axial flow electric blower 1.11, an air cleanliness sensor (not shown in the figure) and an air pressure sensor 1.12 are arranged inside the air outlet 1.1. An arc-shaped inner pipe 11.1 is arranged inside the ventilation hood 11. The arc-shaped inner pipe 11.1 is fixedly installed at the top of the ventilation hood 11. A plurality of ventilation holes 11.11 are also provided at the bottom of the inner pipe 11.1. The inner pipe 11.1 is communicated with the air outlet 1.1 through an air supply pipe 6. A detachable secondary insurance filter material 5 is arranged between the ventilation hood 11 and the air supply pipe 6.

[0040] During the filtration operation, the negative pressure generated by the rotation of the forward and reverse axial flow electric fan 1.11 sucks air into the air inlet 2.1 of the protective housing 1. The air passes through the main filter material 1.6 made of ePTFE polytetrafluoroethylene air filter membrane to remove harmful substances such as solid particles and aerosols containing bacteria and viruses. Then, it passes through the air supply pipe 6 and is sent into the ventilation hood 11. From the inner top of the ventilation hood 11, it sprays downward towards the user's face in the direction from the back to the front and along the forehead, for the user to breathe. Under the action of the positive pressure in the ventilation hood 11, the exhaled waste gas is discharged from the gap at the lower edge of the ventilation hood 11.

[0041] Such a gas flow direction can avoid the gas blowing directly on the face and also prevent the face shield of the ventilation hood 11 from fogging up. Under the action of the ventilation holes 11.11, a part of the gas can be diverted and play a role in cooling the user's head.

[0042] During the filtration operation, the gas flow direction is as shown by the arrow in Figure 6 .

[0043] A backpack system is also provided on the side of the protective housing 1. A controller 8 is installed in the backpack system. The forward and reverse axial flow electric fan 1.11, the wind pressure sensor 1.12, the air cleanliness sensor, the alarm light 1.2, the battery 1.3, the backup battery 1.4, and the first ultraviolet lamp 1.5 are all electrically connected to the controller 8 through the first wire. At the same time, several first wires for connection are bundled to form a wire group 4, and the wire group 4 is fixedly connected to the backpack strap 3.

[0044] The above-mentioned electronic components are all well-known prior arts to those skilled in the art, so they will not be elaborated here.

[0045] Referring to Figure 5 , the backpack system includes two telescopic and adjustable backpack straps 3. The two ends of the backpack straps 3 are respectively fixedly connected to the top and bottom of the protective housing 1. A separable chest strap 7 is also provided between the two backpack straps 3. The separation and insertion of the chest strap 7 are realized by the buckle 9. The controller 8 is arranged on the chest strap 7.

[0046] During the filtration operation, if dangerous situations such as too low wind pressure, too low air cleanliness after filtration, and too low power / voltage of the power supply occur, the controller will control the alarm light 1.2 to give an alarm. In this case, the secondary insurance filter material 5 arranged between the ventilation hood 11 and the air supply pipe 6 can still ensure the filtration of the system, and at the same time, the backup battery 1.4 can supply power as a substitute, thus ensuring the normal operation of the system under special circumstances.

[0047] A maintenance and storage box for the maintenance of a positive-pressure electric air supply breathing protection system, including a box body 21 and a box cover 28 hinged to the box body 21. The opening or closing and fastening of the box body 21 and the box cover 28 are realized through a buckle 27 located on its side. The movement of the maintenance and storage box is realized through a plurality of side handles 29 located on the side of the box body 21 and an upper handle 30 on the top of the box cover 28.

[0048] A sealing groove is provided at the top of the box body 21, and a sealing strip (not shown in the figure) is installed in the sealing groove. A power supply 22 and a second ultraviolet lamp 26 are arranged inside the box body 21. A switch 24, a power socket 23 and a plug 25 are provided on the power supply 22. The plug 25 is located inside the box body 21, and the power socket 23 and the switch 24 extend from the side wall of the box body 21 to the outside of the box body 21. The power supply 22 is electrically connected to the second ultraviolet lamp 26 through a second wire.

[0049] The maintenance method of the maintenance and storage box includes the following steps:

[0050] S1. After the positive-pressure electric air supply breathing protection system is used, turn the wind speed adjustment switch of the forward and reverse axial-flow electric fan 1.11 to the maximum air volume position;

[0051] S2. Spray the positive-pressure electric air supply breathing protection system with disinfectant water for preliminary disinfection and cleaning;

[0052] S3. Remove the secondary protection filter material 5 and install it on the air inlet 2.1;

[0053] S4. Put the whole positive-pressure electric air supply breathing protection system into the maintenance and storage box, and at the same time plug the plug 25 into the controller 8;

[0054] S5. Close the box cover 28, connect the power supply 22 through the power socket 23 and the power cord, and press the power switch.

[0055] S6. The controller 8 first starts the second ultraviolet lamp 26, uses ultraviolet light irradiation to generate ozone to kill microorganisms, and then starts and reverses the forward and reverse axial-flow electric fan 1.11. The forward and reverse axial-flow electric fan 1.11 blows air into the protection housing 1, cleans the dirt blocked on the main filter material 1.6, and concentrates the dirt on the secondary protection filter material 5. At the same time, while maintaining the positive-pressure electric air supply breathing protection system, the controller 8 also controls the power supply 22 to charge the battery 1.3 and the backup battery 1.4 for the next use.

[0056] The above are only the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the forms disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications, and environments, and can be changed within the scope of the concept described herein through the above teachings or the techniques or knowledge in the relevant field. Any changes and modifications made by those skilled in the art without departing from the spirit and scope of the present invention shall fall within the protection scope of the appended claims of the present invention.

Claims

1. A maintenance and storage box for maintaining a positive pressure electric air supply respiratory protection system, the positive pressure electric air supply respiratory protection system including a protective housing (1), a cover plate (2) and a ventilation hood (11). The protective housing (1) has an opening on one side, and a reusable main filter material (1.6) is provided on the opening side. A cover plate (2) is also buckled on the opening side of the protective housing (1). An air inlet (2.1) is provided at the bottom of the cover plate (2), and an air outlet (1.1) is provided at the top of the protective housing (1). A battery (1.3) is provided outside the protective housing (1). An electric blower (1.11) is provided in the air outlet (1.1). An inner tube (11.1) is provided in the ventilation hood (11), and the inner tube (1.11) is communicated with the air outlet (1.1) through an air supply pipe (6). A detachable secondary safety filter material (5) is provided between the ventilation hood (11) and the air supply pipe (6). A back-carrying system is also provided on the side of the protective housing (1), and a controller (8) is installed in the back-carrying system. The electric blower (1.11) and the battery (1.3) are both electrically connected to the controller (8) through a first wire; The maintenance and storage box includes a box body (21) and a box cover (28). One side of the box body (21) is open, and the box cover (28) is hinged to the opening side. It is characterized in that: A sealing groove is provided at the opening side of the box body (21), and a sealing strip is installed in the sealing groove. A power supply (22) and a second ultraviolet lamp (26) are provided inside the box body (21). A switch (24), a power socket (23) and a plug (25) are provided on the power supply (22). The plug (25) is located inside the box body (21), and the power socket (23) and the switch (24) extend from the side wall of the box body (21) to the outside of the box body (21). The power supply (22) is electrically connected to the second ultraviolet lamp (26) through a second wire. The plug (25) is arranged in a matching manner with the controller (8); The electric blower (1.11) is a forward and reverse axial flow blower; The main filter material (1.6) is made of ePTFE polytetrafluoroethylene air filtration membrane.

2. The maintenance and storage box according to claim 1, It is characterized in that: The inner tube (1.11) is arc-shaped and fixedly installed at the top of the ventilation hood (11), and a plurality of ventilation holes (11.11) are also provided at the bottom of the inner tube (11.1).

3. The maintenance and storage box according to claim 1, It is characterized in that: The back-carrying system includes two retractable and adjustable shoulder straps (3). The two ends of the shoulder straps (3) are respectively hinged to the top and bottom of the protective housing (1). A separable chest strap (7) is also provided between the two shoulder straps (3), and the controller (8) is arranged on the chest strap (7).

4. The maintenance and storage box according to claim 1, It is characterized in that: A plurality of the first wires are bundled to form a wire group (4), and the wire group (4) is fixedly connected to the shoulder strap (3).

5. The maintenance and storage box according to claim 1, It is characterized in that: An alarm lamp (1.2) and a backup battery (1.4) are further arranged outside the protection housing (1), a first ultraviolet lamp (1.5) is further arranged inside the protection housing (1), an air cleanliness sensor and a wind pressure sensor (1.12) are further arranged in the air outlet (1.1), and the alarm lamp (1.2), the backup battery (1.4), the air cleanliness sensor, the first ultraviolet lamp (1.5) and the wind pressure sensor (1.12) are all electrically connected to a controller (8) through a first wire.

6. The maintenance organizer according to claim 1, characterized in that: A buckle (27) for opening and closing the maintenance organizer is further arranged on the side of the maintenance organizer, a plurality of side handles (29) are arranged on the side of the box body (21), and an upper handle (30) is arranged on the box cover (28).

7. The maintenance method of the maintenance organizer according to claim 1, characterized in that: It includes the following steps: S1. After the positive pressure electric air supply respiratory protection system is used up, turn the wind speed adjustment switch of the electric blower (1.11) to the maximum air volume position; S2. Sprinkle the positive pressure electric air supply respiratory protection system with disinfectant water for preliminary disinfection and cleaning; S3. Remove the secondary protection filter material (5) and install it on the air inlet (2.1); S4. Put the whole positive pressure electric air supply respiratory protection system into the maintenance organizer, and at the same time plug the plug (25) into the controller (8); S5. Close the box cover (28), connect the power supply (22) through the power socket (23) and the power cord, and press the power switch; S6. The controller (8) first starts the second ultraviolet lamp (26) to kill microorganisms by irradiating with ultraviolet light, then starts and reverses the electric blower (1.11), and the electric blower (1.11) blows air into the protection housing (1) to clean the dirt blocked on the main filter material (1.6) and concentrate the dirt on the secondary protection filter material (5). While maintaining the positive pressure electric air supply respiratory protection system, the controller (8) also controls the power supply (22) to charge the battery (1.3) and the backup battery (1.4).

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