Expiratory valve used for respiratory protection device
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A protective device and exhalation valve technology, applied in the field of exhalation valve, can solve the problems of increased inspiratory resistance, crowd influence, high material and production costs, etc., and achieve the effects of reduced exhalation resistance, smooth appearance and simple structure
Inactive Publication Date: 2017-02-22
王戈丰
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Abstract
Description
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Problems solved by technology
[0007] There are many problems in the existing exhalation valve. First, the structure of the current exhalation valve is relatively complicated, and the cost of materials and production is relatively high. , to achieve sealing and exhaust, in the opening / closing process of the valve, it is inevitable that there will be unfiltered air entering; 3, in order to increase the exhaled gas, it is necessary to increase the area of the exhalation valve, thus reducing The effective filtration area is increased, which in turn increases the inspiratory resistance; Fourth, the existing respiratory protective devices will more or less have a certain dead space structure, which will have a greater impact on some specific groups of people
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Embodiment 1
[0024] figure 1 It is a schematic diagram of the exhalation valve in Example 1 of the present invention when exhaling.
[0025] like figure 1 As shown, a through hole 11 is opened on the cover body 1, and one end of the exhaust pipe 12 is inserted into the through hole 11, and the wall of the end of the exhaust pipe 12 inserted into the end is airtightly fixed together with the edge of the through hole 11, The rest of the exhaust pipe 12 is placed outside the cover body 1 , and part of the pipe wall of the exhaust pipe 12 is fixed on the outside of the cover body 1 through bonding points 10 .
[0026] In this embodiment 1, the through hole 11 is circular, but it is not limited thereto. The size and shape of the through hole 11 are not limited; The middle part of body 1, near the mouth and nose.
[0027] Exhaust pipe 12 is a flexible pipe, and it is made of frivolous, soft, air-tight film material, such as plastics, rubber or composite material etc.
[0028] figure 2 is a...
Embodiment 2
[0034] figure 2 It is a cross-sectional view of Embodiment 2 of the present invention. Embodiment 2 is based on Embodiment 1, adding a nasal plug 13, inhaling through the mouth and exhaling through the nose, realizing that inhalation and exhalation go their own way, completely avoiding In order to form a dead space in the respiratory protection device, keep the inside of the respiratory protection device dry and comfortable.
[0035] As shown in the figure, one end of the nasal prong tube 13 located inside the cover body 1 is airtightly connected to the through hole 11. The connection method is bonding or plugging, preferably plugging, so that the nasal prong tube 13 can be replaced.
[0036] The other end of this nasal plug tube 13 will be inserted in the nostril during use, and this end can be designed into different thicknesses, to adapt to the nostrils of different sizes, further improves the comfortability of wearing.
[0037] In actual use, two one-way channels formed ...
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Abstract
The invention discloses an expiratory valve used for a respiratory protection device. The expiratory valve comprises a through hole and a gas exhaust tube, wherein the through hole is formed in a proper position of a cover body of the respiratory protection device; the gas exhaust tube penetrates through the through hole; the edge of one end of the gas exhaust tube is fixedly connected to the edge of the through hole in a gastight mode, and the other end of the gas exhaust tube extends to the outer side of the cover body of the respiratory protection device; the gas exhaust tube is a hose which is made of thin, soft and gastight plastic, rubber or a composite material; the end, at the outer side of the cover body, of the hose is curled; part of the hose wall of the hose is fixedly arranged at the outer side of the cover body of the respiratory protection device; and a nose plug tube is connected with the through hole in the gastight mode. The expiratory valve disclosed by the invention has the advantages of being simple in structure, convenient to process, low in cost and the like, further has the characteristics of being flexible in design, neat in appearance and the like; and after the nose plug tube is additionally arranged, expiration and inspiration can be separately carried out, so that formation of a dead space is completely avoided, and the problems in the prior art are effectively solved.
Description
technical field [0001] The invention relates to an exhalation valve, in particular to an exhalation valve for a respiratory protective device. Background technique [0002] Respiratory protective devices are widely used in daily work and life, especially with the increase of smog weather, respiratory protective devices have become the main tool for people to defend against smog. [0003] In order to have a good filtering effect, a mask or a breathing mask must have good airtightness and at the same time be able to smoothly discharge the gas exhaled by the human body. The gas is discharged as soon as possible, which becomes an important factor affecting the performance of the mask or breathing mask. [0004] For general masks, most of the exhaled gas is discharged through the periphery of the mask. In this case, when people inhale, the periphery of the mask will not immediately restore good airtightness, and some air will enter from the periphery of the mask, affecting To t...
Claims
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Application Information
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