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Medical positive pressure protective helmet with adjustable air supply angle

An adjustable air supply angle technology, which is applied to helmets, helmet covers, applications, etc., can solve the problems of difficult breathing, large breathing resistance, and low wearing comfort for users, so as to improve gas flow and accelerate the rate of descent , Increase the effect of wearing comfort

Pending Publication Date: 2022-05-27
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Ordinary medical self-absorbing respiratory protective devices have the influence of breathing resistance, which makes it difficult for the wearer to breathe. Onscreen CO 2 Concentration drop rate, gas fluidity in the mask, probability of dead space formation, and pressure gradient in the mask have no effect; conventional self-priming filter masks or other similar air-supply masks have high quality, high breathing resistance, and low portability. Poor, seriously reduce the user's work efficiency when wearing, and the wearing comfort is low

Method used

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  • Medical positive pressure protective helmet with adjustable air supply angle
  • Medical positive pressure protective helmet with adjustable air supply angle
  • Medical positive pressure protective helmet with adjustable air supply angle

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specific Embodiment approach 1

[0016] Specific implementation mode 1: refer to Figure 1 to Figure 4 This embodiment will be described. This embodiment provides a medical positive pressure protective helmet with adjustable air supply angle. The air supply angle adjustment device of the medical positive pressure protective helmet includes 1 helmet body, 2 air supply ports, 3 connection fixtures, 4 snaps, 5 air supply pipes, 6 fixed headgear, 7 sealing baffles, 8 adjusting devices, 9 face screens, 10 sealing apron. The adjustment device consists of: 8-1 single-layer rack, 8-2 gear 1, 8-3 spoiler 1, 8-4 screw rod 1, 8-5 bevel gear 1, 8-6 bevel gear 2, 8 -7 gear 2, 8-8 screw rod 2, 8-9 gear 3, 8-10 bevel gear 3, 8-11 bevel gear 4, 8-12 double rack, 8-13 gear 4, 8-14 disturbance flow plate 2;

[0017] The sealing baffle 7 is arranged at the bottom opening of the helmet body 1, and the sealing plate 7 is bonded and fixed to the helmet body 1. A rectangular through hole is processed at the center of the sealing ...

specific Embodiment approach 2

[0019] Specific implementation two: refer to Figure 2 to Figure 4 This embodiment will be described. This embodiment is further limited to the adjusting device 8 described in the first embodiment; in this embodiment, the adjusting device 8 includes a single-layer rack (8-1), a gear 1 (8-2) ), spoiler 1 (8-3), screw rod 1 (8-4), bevel gear 1 (8-5), bevel gear 2 (8-6), gear 2 (8-7), screw rod 2 (8-8), gear 3 (8-9), bevel gear 3 (8-10), bevel gear 4 (8-11), double rack (8-12), gear 4 (8-13), Spoiler 2 (8-14).

[0020] In this embodiment, the gear 1 and the gear 4 are connected to the shaft, and the other end of the shaft is connected to the spoiler. By rotating the screw rod 1 and the screw rod 2, the bevel gear 1, the bevel gear 2, the bevel gear 3, the bevel gear 3 and the bevel gear below the screw rod are driven. The gear 4 rotates, and then drives the gear 2 and gear 3 coaxial with the bevel gear 2 and the bevel gear 4 to rotate, and then the gear 2 and the gear 3 drive t...

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Abstract

The invention discloses a medical positive-pressure protective helmet capable of adjusting an air supply angle, belongs to the field of respiratory protection, and aims to solve the problems that the air supply angle of a common medical positive-pressure respiratory protection device is limited, the internal CO2 concentration is reduced slowly, and the internal gas fluidity is poor, so that a dead cavity exists, the CO2 concentration at the dead cavity is high, and the safety is high. According to the medical positive-pressure protective helmet capable of adjusting the air supply angle, an adjusting device is additionally arranged on the basis of an existing positive-pressure type respiratory protection device, so that clean air flowing through an air supply pipeline is adjusted through a spoiler after passing through the adjusting device, and then the air supply angle is adjusted through the spoiler; according to the medical positive-pressure protective helmet, air enters the face screen at multiple angles, the gas flowability in the face screen of the medical positive-pressure protective helmet is improved, formation of a dead cavity in the face screen is reduced, the conditions of uneven pressure distribution and uneven CO2 concentration distribution in the face screen are improved, and the using effect and comfort of a wearer are enhanced.

Description

Technical field: [0001] The invention relates to the technical field of respiratory protection, in particular to a medical powered air supply respiratory protection device. Background technique: [0002] Ordinary medical self-priming respiratory protection devices have the effect of breathing resistance, which makes it difficult for users to breathe, and the actual use effect is not ideal. At present, the power supply air mask adopts a fixed air supply angle to supply air, which can only meet the requirements of conventional air supply. In-screen CO 2 Concentration drop rate, gas fluidity in the mask, probability of dead space formation, and pressure gradient in the mask all have no effect; conventional self-priming filter masks or other similar air-supplied masks have high quality, high breathing resistance, and high portability. Poor, the user's work efficiency is seriously reduced when wearing, and the wearing comfort is low. Therefore, the present invention designs a m...

Claims

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Application Information

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IPC IPC(8): A42B3/28A42B3/20
CPCA42B3/28A42B3/283A42B3/288A42B3/20
Inventor 赵新通杨雪冬马冬冬
Owner HARBIN UNIV OF SCI & TECH
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