CN215387108U

CN215387108U - Power air-supply filtering respirator

Info

Publication number: CN215387108U
Application number: CN202121244137.3U
Authority: CN
Inventors: 赵子皓
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-04
Filing date: 2021-06-04
Publication date: 2022-01-04
Anticipated expiration: 2031-06-04

Abstract

The utility model relates to a power air supply filtering respirator, wherein a shell is composed of an upper cover and a bottom shell, a shell sealing silica gel ring is arranged in a groove on the matching surface of the upper cover, a fan assembly, a control circuit and an electronic switch are arranged in a space formed by the upper cover and a lower cover in a matching way, and the lower end of the shell is provided with a modular battery pack mounting position. The battery pack provides electric energy, the fan assembly forms forced airflow, the forced airflow is blown to the closed mask or the open hood through the air outlet port through the air guide pipe, negative pressure is formed, and external air is filtered by the canister and then is sucked into the air cavity. The dual-filter tank can be provided with the dual-filter tank, has a compact structure, is suitable for users with different physiques and different environments, and can effectively improve the wearing comfort. The shell sealing ring is matched with the local pouring sealant, so that the sealing performance of the whole machine is improved. The air inlet end cap and the air outlet end cap are matched for use, and the modularized battery pack is added, so that the device can be integrally soaked for disinfection.

Description

Power air-supply filtering respirator

Technical Field

The utility model relates to the technical field of respirators, in particular to a power air supply filtering respirator.

Background

The conventional gas mask takes a canister as a gas filtering medium and takes human breath as power, and the user feels uncomfortable due to oxygen deficiency and suffocation after long-time use. Moreover, the inside of the mask is in a negative pressure state during inhalation, which easily causes toxic gas to leak into the mask. Therefore, an auxiliary device for electric power air supply is needed, and the existing products in the market comprise: insufficient air quantity, inconvenient disinfection, short battery endurance time, non-replaceable batteries and the like.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides a power air supply filtering respirator which is reasonable in structure, long in service life, safe and guaranteed in use, convenient to clean and disinfect after use, low in failure rate, simple to maintain and convenient to maintain.

In order to achieve the purpose of the utility model, the utility model adopts the technical scheme that: power air supply filtration formula respirator, including the respirator body, the respirator body includes casing, fan assembly, control circuit and modularization group battery, its characterized in that: the shell comprises an upper cover and a bottom shell, wherein the matching surface of the upper cover is provided with grooves, the matching surface of the bottom shell is provided with bulges, two sides of the outer surface of the upper cover are respectively provided with a canister mounting hole with female threads, one side of the upper end of the bottom shell is provided with an air outlet port, the air outlet port is provided with external threads, the back surface of the bottom shell is provided with four protruded clamping bamboo shoots, a waistband connector is arranged between the four clamping bamboo shoots in a matching way, waistband connector latches for fixing the waistband connector are also arranged below the two clamping bamboo shoots, an air inlet is arranged in the upper cover and corresponds to the canister mounting hole, a battery mounting position is arranged in the lower part of the upper cover, the center of the battery mounting position is provided with a battery latch, a battery mounting slot is arranged below the bottom shell, and the modularized battery pack is respectively installed in a matching way with the battery mounting position, the battery latch and the battery mounting slot, the fan assembly is installed in inside one side of drain pan, the fan assembly air outlet is connected with the air-out port, be equipped with the shielding box in the drain pan of fan assembly one side, control circuit is located the shielding box, and links to each other with fan assembly modularization group battery through the wire, canister mounting hole and air-out port outside cooperate respectively to be equipped with air inlet end cap and air-out port end cap.

As an improvement: a silica gel sealing ring with a circular cross section is arranged in the groove of the bottom shell, and the protrusion of the upper cover is inserted into the groove and tightly pressed with the sealing ring.

As an improvement: the modularized battery is wrapped by a battery shell to wrap an internal lithium battery, an electric quantity display and a battery connecting contact piece are arranged outside the battery shell, a lithium battery protection circuit high-temperature power-off circuit and an electric quantity detection circuit are arranged in the battery shell, the modularized battery has a waterproof design, and the battery can be wholly immersed in disinfectant.

As an improvement: the upper cover is provided with a plurality of nut mounting holes on the upper cover matching surface, and the bottom shell matching surface is provided with bolt mounting holes matched with the nut mounting holes.

As an improvement: the respirator body also comprises an electronic switch, and the electronic switch comprises an air volume reducing button, an air volume increasing button and a power switch which are positioned on one side of the air outlet port; the power switch is turned on by short pressing and turned off by long pressing for three seconds; the air volume increasing key and the air volume reducing key can adjust the air volume by short pressing, and four air volume gears are arranged to meet the use requirements of different environments and different people. The electronic switch is a membrane switch, is led into the shell from the outside of the shell through the flat cable, and then the reserved opening of the flat cable is sealed by pouring sealant so as to ensure the air tightness

As an improvement: the control circuit consists of an electronic switch circuit, an air quantity constant circuit, a battery voltage stabilizing circuit, a low flow alarm circuit, a low voltage alarm circuit and a carbon monoxide concentration alarm circuit.

Compared with the prior art, the utility model has the advantages that: the air supply control device can be provided with double filter tanks, has a compact structure, realizes four-gear air supply quantity adjustment, constant air quantity, low-flow alarm and low-power alarm under the action of a control circuit and an electronic switch, is more suitable for users with different physiques and different environments, and can effectively improve the wearing comfort level. The shell sealing ring is matched with the local pouring sealant, so that the sealing performance of the whole machine is improved. The air inlet end cap and the air outlet end cap are matched for use, and the modularized battery pack is added, so that the device can be integrally soaked for disinfection, and the convenience and safety degree of decontamination operation after the device is used in a biological pollution environment are enhanced.

Drawings

Fig. 1 is an isometric view of the overall appearance of the device of the present invention.

FIG. 2 is a schematic view of the top cover mating surface and interior of the device of the present invention.

FIG. 3 is a schematic view of the device of the present invention mounted with a corresponding plug and a battery.

Figure 4 is an elevational view of the device of the present invention with the plug installed.

Figure 5 is an isometric view of the bottom shell of the device of the present invention.

FIG. 6 is a schematic view of the back of the apparatus of the present invention.

In the above drawings: 1. a belt connector; 2. an air outlet port; 3. canister mounting holes; 4. the air quantity reduces the key set; 5. an air volume increasing button; 6. a power switch; 7. a nut mounting hole; 8. a groove; 9. battery locking; 10. a battery mounting location; 11. an air inlet; 12. a modular battery pack (not mounted in place in fig. 3); 13. an air inlet plug; 14. an air outlet end plug; 15. an upper cover; 16. a bottom case; 17. a protrusion; 18. a fan assembly; 19. a bolt mounting hole; 20. a battery mounting slot; 21. Blocking the bamboo shoots; 22. bolt holes; 23. the waistband connector is locked.

Detailed Description

The following further describes embodiments of the present invention with reference to the accompanying drawings.

Referring to fig. 1, the upper cover 15 and the bottom shell 16 of the device of the present invention are both in the shape of a notch, the front end surface of the upper cover 15 is composed of two planes with a middle protrusion, and two threaded canister mounting holes are arranged on the planes; the air outlet port 2 is positioned on one side of the upper end surface of the device, and an external thread is arranged on the air outlet port 2 and used for being connected with an air conduit. The electronic control key is arranged beside the air outlet port and comprises the following components: an air volume reducing button 4, an air volume increasing button 5 and a power switch 6. The back of the device is provided with a clamping bamboo shoot 21 connected with the waistband connector, and the main machine of the power air supply filtering respirator can be separated from and connected with the waistband connector 1 through the clamping bamboo shoot.

The front cover of the device of the utility model is shown in figure 2 and the bottom shell is shown in figure 5. Install embedded nut in the nut mounting hole 7, be equipped with the sealing silica gel strip in the slot 8, when the protecgulum assembled with the drain pan, bolt mounting hole 19 on the drain pan aligns with the nut mounting hole 7 of upper cover, and upper cover fitting surface slot 8 is inserted to drain pan fitting surface arch 17, and the bolt passes through bolt mounting hole 19 screw in embedded nut, and protruding 17 compresses tightly the silica gel circle in the slot 8 when the bolt is screwed, reaches airtight from this. A battery mounting position 10 is arranged below the upper cover, a battery lock catch 9 is arranged in the center of the mounting position, and a battery mounting clamping groove 20 is arranged below the bottom shell; when the modular battery pack 12 is aligned with the battery mounting slot 20, the battery mounting slot 10 can be slid into the battery mounting position, and after the battery is mounted in place, the latch 9 is ejected and inserted into the latch opening at the upper end of the modular battery pack 12, so that the battery is locked.

The device of the present invention is shown in FIG. 6. The rear end face of the waistband connector is provided with four T-shaped clamping bamboo shoots 21 which can be connected and separated with the waistband connector 1 through the clamping bamboo shoots, and when the clamping bamboo shoots 21 are correctly clamped into the waistband connector, the waistband connector lock 23 is inserted into the waistband connector 1 to lock the waistband connector; when separation is required, the housing can be separated from the belt connector 1 by pressing the connector lock 23 and pushing the housing upward.

The internal structure of the device of the present invention is shown in fig. 5. The fan assembly 18 is positioned on the left side in the bottom shell, and an air outlet of the fan assembly 18 is directly connected with the air outlet port 2; in order to reduce wind power loss, the shell of the fan assembly is airtight except for the air outlet and the air inlet by adopting a mode of combining ultrasonic welding and pouring sealant; and a silica gel ring is arranged on the outer side of the air outlet of the fan assembly and is used for air tightness when being connected with the air outlet port 2. The control circuit consists of an electronic switch circuit, an air volume constant circuit, a battery voltage stabilizing circuit, a low flow alarm circuit, a low voltage alarm circuit and a carbon monoxide concentration alarm circuit, wherein the control circuits are all positioned in a shielding box, and the shielding box is positioned in a blank area at the lower side of the air outlet port 2 and at the right side of the fan assembly 18; the output port of the control circuit is connected with other parts through DuPont wires. Wherein: the electronic switch circuit is used for controlling a total power supply (comprising a fan assembly) of the control circuit and controlling the air supply quantity of the fan, and the air quantity constant circuit is used for regulating and controlling the air supply quantity of the fan in a PID control mode so as to keep the air supply quantity within the range of +/-5% of the set air supply quantity of the current gear; the battery voltage stabilizing circuit is used for stabilizing the output voltage of the 3S lithium battery to be about 12v all the time, when the residual electric quantity of the battery is lower than 15%, the low-voltage alarm circuit is started, and the buzzer continuously gives out alarm sound; the low-flow alarm circuit can start the alarm device when the output air volume caused by air inlet blockage, air duct knotting and the like caused by some accidents is lower than the set minimum air volume, so that the buzzer continuously alarms to prevent oxygen deficiency in the hood; the carbon monoxide canister at the present stage adopts hopcalite agent, and a certain amount of hopcalite agent can only provide the protection of certain time, because carbon monoxide is colorless tasteless, and whether the canister is effective is difficult to artificially judge in the use, has consequently added carbon monoxide concentration alarm circuit very much, just begins to report to the police when carbon monoxide concentration value is close to the danger value in the air after filtering, makes the user have sufficient time to leave dangerous place.

The state of the device of the utility model to be sterilised is shown in figure 3. The air inlet plug 13 is screwed in the canister mounting hole 3, so that the air inlet is sealed; the air outlet end plug 14 is screwed in the air outlet end 2, so that an air outlet of the air outlet end 14 is sealed; the battery lock catch 9 is opened, and the modular battery pack 12 is ejected from the battery installation position 10; at the moment, the battery and the shell can be directly immersed in disinfectant for disinfection. The device of the utility model has the advantages that the sealing effect that no bubbles emerge and no water permeates when the device is placed under water for 3 hours under the condition of the water depth of 2m is achieved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. Power air supply filtration formula respirator, including the respirator body, the respirator body includes casing, fan assembly, control circuit and modularization group battery, its characterized in that: the shell comprises an upper cover and a bottom shell, wherein the matching surface of the upper cover is provided with grooves, the matching surface of the bottom shell is provided with bulges, two sides of the outer surface of the upper cover are respectively provided with a poison filtering tank mounting hole with female threads, one side of the upper end of the bottom shell is provided with an air outlet port, the air outlet port is provided with external threads, the back surface of the bottom shell is provided with four protruding clamping bamboo shoots, a waistband connector is arranged between the four clamping bamboo shoots in a matching way, waistband connector latches for fixing the waistband connector are also arranged below the two clamping bamboo shoots, an air inlet is arranged in the upper cover and corresponds to the poison filtering tank mounting hole, a battery mounting position is arranged in the lower part of the upper cover, the center of the battery mounting position is provided with a battery latch, a battery mounting slot is arranged below the bottom shell, and the modularized battery pack is respectively installed in a matching way with the battery mounting position, the battery latch and the battery mounting slot, the fan assembly is installed in inside one side of drain pan, the fan assembly air outlet is connected with the air-out port, be equipped with the shielding box in the drain pan of fan assembly one side, control circuit is located the shielding box, and links to each other with fan assembly modularization group battery through the wire, canister mounting hole and air-out port outside cooperate respectively to be equipped with air inlet end cap and air-out port end cap.

2. The powered air-supplying filtering respirator of claim 1, wherein: a silica gel sealing ring with a circular cross section is arranged in the groove of the bottom shell, and the protrusion of the upper cover is inserted into the groove and tightly pressed with the sealing ring.

3. The powered air-supplying filtering respirator of claim 1, wherein: the modularized battery is formed by wrapping a battery shell with an internal lithium battery, wherein an electric quantity display and a battery connecting contact piece are arranged outside the battery shell, and a lithium battery protection circuit high-temperature power-off circuit and an electric quantity detection circuit are arranged in the battery shell.

4. The powered air-supplying filtering respirator of claim 1, wherein: the upper cover is provided with a plurality of nut mounting holes on the upper cover matching surface, and the bottom shell matching surface is provided with bolt mounting holes matched with the nut mounting holes.

5. The powered air-supplying filtering respirator of claim 1, wherein: the respirator body still includes electronic switch, electronic switch is including the amount of wind that is located air-out port one side reduces button, the amount of wind increases button and switch.

6. The powered air-supplying filtering respirator of claim 5, wherein: the control circuit consists of an electronic switch circuit, an air quantity constant circuit, a battery voltage stabilizing circuit, a low flow alarm circuit, a low voltage alarm circuit and a carbon monoxide concentration alarm circuit.