CN103203082B - Pneumatic filter - Google Patents
Pneumatic filter Download PDFInfo
- Publication number
- CN103203082B CN103203082B CN201310151272.7A CN201310151272A CN103203082B CN 103203082 B CN103203082 B CN 103203082B CN 201310151272 A CN201310151272 A CN 201310151272A CN 103203082 B CN103203082 B CN 103203082B
- Authority
- CN
- China
- Prior art keywords
- breather pipe
- filter
- check valve
- filter element
- flap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B23/00—Filters for breathing-protection purposes
- A62B23/06—Nose filters
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
A kind of pneumatic filter of proposition of the present invention, comprising: breather pipe; Airtightly be arranged on the outside filter element for filtering gas of this breather pipe; First check valve, for opening and closing breather pipe; And second check valve, for allowing gas permeation filter element when opening, and when closing barrier gas through filter element, wherein, in the work of filter, the second closed check valve when the first one-way valve opens, and when the first closed check valve the second one-way valve opens.
Description
Technical field
The present invention relates to pneumatic filter, especially a kind of built-in nose filter, it is used in before air enters in human respiratory and filters to protect health to air, also can be used as the delivery system of medical treatment or health care object.
Background technology
At present, air pollution causes health threat to the people in a lot of area in the world, and people in the urgent need to breathing clean air in daily life and work.For this reason, some people puts on mouth mask to filter contaminated air, but people can be made after putting on mouth mask to feel uncomfortable, and the laminating of mouth mask and face is often not tight yet, causes filter effect not good; In addition, there are some needs air filtration but the work position that wears masks of inconvenience, and traffic police such as on duty on highway, they need to blow a whistle with mouth, but mouth mask obviously can hinder their work.
Proposed various built-in nose filter at present, such as the applicant discloses a kind of built-in nose filter in Chinese patent CN1819857B, and its filter area is large and with low cost, can be placed in nose and use to replace mouth mask.
But all still there is shortcoming in existing built-in nose filter.Such as in use, the gas of characteristics of contaminated respiratory droplets can contact the filter element of existing nose filter and partly leach through filter element, cause filter element to be subject to the secondary pollution of characteristics of contaminated respiratory droplets gas (wherein containing moisture and hundreds of bacterium), thus reduce in the service life of filter element; And on filter element with medicine, drug ingedient can be dispelled in external environment condition by breath, causes drug effect to decline.Also such as, filter element is often fixedly connected with its holding device and non-exchange, and when filter element expires service life, holding device also and abandon in the lump, causes the use cost of filter to increase.
Summary of the invention
In view of the above problem existed in prior art, a kind of pneumatic filter of proposition of the present invention, comprising: breather pipe; Airtightly be arranged on the outside filter element for filtering gas of this breather pipe; First check valve, for opening and closing breather pipe; And second check valve, for allowing gas permeation filter element when opening, and when closing barrier gas through filter element, wherein, in the work of filter, the second closed check valve when the first one-way valve opens, and when the first closed check valve the second one-way valve opens.
Preferably, the first check valve comprises: the first flap, and it is for closing and open breather pipe, and the first valve seat, and it is for be fixed on the first check valve on breather pipe and to support the first flap.
Preferably, the second check valve comprises: the second flap, and it is distributed in breather pipe outside; And second valve seat, it is for be fixed on the second check valve on breather pipe and to support the second flap.
Preferably, second valve seat comprises interior annular element, outer ring part and connects the spoke of inside and outside annular element, this second valve seat is airtight by interior annular element to be set on breather pipe, and be tightly connected by outer ring part and filter element, described second flap is connected with interior annular element, one of outer ring part and spoke.
Preferably, the second valve seat has pore, and filter element covers this pore, and the second flap is for opening and closing this pore.This pore is filtered element and covers airtightly, so when the second flap opens or closes this pore, can allow or stop gas permeation filter element.
Preferably, the first and second flaps are flexible.First and second flaps can be made up of silica gel.
Preferably, pneumatic filter also comprises fixed sleeving, for being set on described breather pipe or inserting in breather pipe, filter element and the second check valve to be clamped in airtightly between described fixed sleeving and breather pipe.
Preferably, the filtering surface of filter element has the gauffer increasing filter area.More preferably, filter element comprises inner barrel nested with one another and outer cylinder body, between inside and outside cylindrical shell, there is gap, and for supplied gas circulation, one end of outer cylinder body is connected with one end of inner barrel.
Preferably, described breather pipe, filter element, the first check valve and the second check valve form filter, and this pneumatic filter comprises two described filters and holding device, and described holding device is used for being fixedly connected with described two filters; Preferably, described holding device is connected with the breather pipe of described two filters, and has clamping part, and this clamping part is used for described two filters of fixing maintenance.
In pneumatic filter of the present invention, form two completely isolated gas passages (such as path and the path for people's breath of people's suction gas) by adopting check valve be respectively used to enter gas that filter carries out filtering and use the waste gas of discharging afterwards, avoid waste gas to cause secondary pollution to filter element, thus extend the service life of filter element at double.And filter element is detachable installation in the filter, makes user easily can change filter element, greatly reduces the use cost of filter.
Accompanying drawing explanation
Fig. 1 and Fig. 2 is the stereogram of pneumatic filter according to a first embodiment of the present invention.
Fig. 3 and Fig. 4 is the longitudinal sectional view Sum decomposition figure of pneumatic filter according to a first embodiment of the present invention respectively.
Fig. 5-9 is front view, face upwarding stereogram, top perspective view, the longitudinal sectional view Sum decomposition figure of the modification of pneumatic filter according to a first embodiment of the present invention respectively.
Figure 10-13 is side view, upward view, the longitudinal sectional view Sum decomposition figure of pneumatic filter according to a second embodiment of the present invention respectively.
Figure 14 and Figure 15 is the breather pipe of pneumatic filter according to a second embodiment of the present invention and the upward view of holding device and top view respectively.
Figure 16 and Figure 17 is upward view and the top view of the filter element of pneumatic filter according to a second embodiment of the present invention respectively.
Figure 18 and Figure 19 is longitudinal sectional view and the top view of the second check valve of pneumatic filter according to a second embodiment of the present invention respectively.
Figure 20 and Figure 21 is that the gas filtration state diagram of pneumatic filter according to a second embodiment of the present invention and waste gas discharge state diagram respectively.
Figure 22 illustrates the modification of pneumatic filter according to a second embodiment of the present invention, which uses the filter element with multi-form gauffer.
Detailed description of the invention
Technical scheme of the present invention is further illustrated by specific embodiment below in conjunction with accompanying drawing.
Fig. 1-2 illustrates the stereogram of pneumatic filter according to a first embodiment of the present invention, and Fig. 3-4 illustrates longitudinal sectional view and the exploded view of this pneumatic filter respectively.This pneumatic filter comprises: breather pipe 110, airtightly be arranged on the filter element 130 of this breather pipe 110 outside for filtering gas, and for allow gas permeation filter element 130 when opening and when closing barrier gas through the second check valve 120 of this filter element 130, and one end of breather pipe 110 is provided with the first check valve be made up of the first valve seat 114 and the first flap 112, for opening and closing breather pipe 110.In the work of filter, when the first one-way valve opens, the second check valve 120 is closed, and the second check valve 120 is opened when the first closed check valve.
Pneumatic filter of the present invention may be used for variously needing to carry out filtering to inflow gas and in the situation of combustion gas, such as, pneumatic filter of the present invention can be put into nostril along direction shown in arrow in Fig. 3 (i.e. longitudinal direction) and use.In this article, term " waste gas " represents the gas (such as people's breath) will discharged via this filter after a procedure by the gas after metre filter, when term " near-end " represents that this filter in use, this filter itself or its parts, on the inflow direction of gas to be filtered the front end of the rightabout of waste gas discharge direction (i.e. on), and term " far-end " represent this filter itself or its parts, rear end on the inflow direction of air-flow to be filtered.Such as, when this filter is used for using in nostril, " near-end " represents the one end closer to human body, and " far-end " represents from the one end away from human body.Term " longitudinal direction " direction is proximally to the direction of far-end.
As Figure 1-4, breather pipe 110 is roughly cylindrical shape, has the internal path 111 of discharging for waste gas.First valve seat 114 of the first check valve is arranged on the far-end of breather pipe 110, is connected and supports the first flap 112 with the first flap 112.First valve seat 114 has the pore be communicated with the internal path 111 of breather pipe 110, first flap 112 is mobilizable, the first valve seat 114 can be opened or closed (specifically, open or close the pore of the first valve seat 114), thus opening or closing breather pipe 110, the first flap 112 is when closedown the first valve seat 114 and this valve seat airtight joint.Preferably, the first flap 112 is flexible, and being subject to the draught head effect of its both sides and elastic deformation, can certainly be hard.Waste gas from the proximal flow of breather pipe 110 distally time, the free end 113 of the first flap 112 is easily blown afloat by waste gas, thus opens breather pipe 110; On the contrary, when forming negative pressure in breather pipe 110, this free end 113 to be easily attracted on the first valve seat 114 thus to close breather pipe 110.First valve seat 114 can be tightly connected with breather pipe 110 or be integrally formed.First valve seat 114 also can as a part for breather pipe 110, and now, the first flap 112 is directly connected with breather pipe 110, for opening and closing breather pipe 110.
As Figure 1-4, the second check valve 120 comprises: the second flap 121, and be connected with the second flap 121 and the second valve seat 123, second check valve 120 supporting the second flap 121 by this second valve seat 123 and breather pipe 110 airtight joint.Second valve seat 123 also comprises fixing hole 126, for making the second valve seat 123 be set in breather pipe 110 for breather pipe 110 passes.Second valve seat 123 also comprises seal lip 124, and for wall (wall in the such as nostril) airtight joint of the chamber with this filter of accommodation, sealing antelabium 124 is preferably flexible, makes to be more conducive to form described airtight joint.Second valve seat 123 has the pore being distributed in breather pipe 110 outside, and this pore is filtered element 130 and covers airtightly, and filter element 130 can be filtered the gas flowed into through this pore.Second flap 121 is mobilizable, the second valve seat 123 can be opened or closed, specifically open or close the pore of the second valve seat 123, thus allow gas to discharge through filter element 130 and then from the second check valve through the second check valve and then through filter element 130 or prevention waste gas.Second flap 121 is when closedown the second valve seat 123 and this valve seat airtight joint.Preferably, second flap 121 is flexible, be subject to the draught head effect of its both sides and elastic deformation, such as, when filter combustion gas, air pressure (air pressure namely in breather pipe 110) a little higher than ambient pressure in the chamber holding this filter, thus the second flap 121 is pressed on the second valve seat 123 and closes the second valve seat 123; On the contrary, when forming negative pressure in the chamber holding this filter, this free end 122 is started thus is opened the second valve seat 123.Second valve seat 123 can be tightly connected with breather pipe 110 and/or the first valve seat 114 or be integrally formed.
In the present embodiment, the second valve seat 123 comprises interior annular element 127, outer ring part 128 and connects the spoke 129 of inside and outside annular element, as shown in figs. 1 and 4.This interior annular element 127 comprises fixing hole 126.By the fixing hole 126 in the middle of interior annular element 127, fixed cover is located on described breather pipe 110 this second valve seat 123, and be tightly connected by outer ring part and filter element 130, as shown in Figure 3, described second flap 122 can be connected with any one in described interior annular element 127, outer ring part 128 and spoke 129 or its, as long as ensure that the second flap 122 can open or close the second valve seat 123 under the draught head effect of its both sides.
Filter element 130 is hemispherical, by the edge 132 (i.e. the far-end of filter element 130) of the opening 131 in this hemispherical being embedded the annular groove 125 in the proximal side of the outer ring part 128 of the second valve seat 123, filter element 130 is connected with the second valve seat 123, is preferably tightly connected.This filter element 130 is also set on breather pipe 110 by the fixing hole 133 on it.In the present embodiment, first valve seat 114 forms the flange of breather pipe 110, the near-end of breather pipe 110 is through fixing hole 126 and 133, and fixed sleeving 140 is connected in breather pipe 110 from the near-end cover of breather pipe 110, thus the edge clamping of fixing hole 126 and 133 be held between breather pipe 110 and fixed sleeving 140, thus form being tightly connected between breather pipe 110, second valve seat 123, filter element 130.
Preferably, the first check valve and the second check valve are made up of silica column.
For the ease of assembling and the stability improving connection, breather pipe 110 can be made up of hard material.
When being used in nostril with filter, its operation principle is described below.When filter is positioned in nostril along the direction of arrow in Fig. 3, seal lip 124 and nostril form airtight joint.When human body air-breathing, in nostril, form negative pressure, therefore the first flap 112 is closed breather pipe 110 by adsorbing, but the second flap 121 is opened, thus allow air to arrive filter element 130 through the pore of the second valve seat 123, after filter element 130 filters, enter human body; When human exhaled breath, a little higher than ambient pressure of intranarial air pressure, thus the first flap 112 opens breather pipe 110 for waste gas discharge, but the second flap 121 is closed, thus stop waste gas to be discharged through the pore of filter element 130 from the second valve seat 123.As can be seen here, filter of the present invention makes the completely isolated of the passage of filtering gas and the passage of combustion gas, avoids the secondary pollution to filter element 130, extends the service life of filter element 130.And filter element 130 is removably clamped on the second valve seat 123 and breather pipe 110, can change when needed.
In the present invention, various amendment can be carried out to filter.Such as, the shape of breather pipe 110 is not limited to cylindrical shape, can have other shape such as polyhedron shape, taper type.First check valve is not necessarily arranged on the far-end of breather pipe, also can be arranged on the near-end of breather pipe, any position even between far-end and near-end, discharge smoothly through breather pipe 110 as long as waste gas can be realized but stop non-filtering gas to enter breather pipe 110.Second check valve may not be arranged on the far-end of filter as implemented in the first embodiment, also can be arranged on the near-end of filter, as shown in a second embodiment.Filter element 130 also can have other shape, such as, be taper type, paraboloidal, cylinder shape etc.Airtight joint between filter element 130 and the second check valve 120 also can adopt other modes to realize, or filter element 130 and the relative position of the second check valve 120 on filter is longitudinal also can change, as long as ensure that filter element 130 can cover the pore of the second check valve 120, thus realize the second flap 121 and can allow and stop gas permeation filter element 130 when this pore of opening and closing.
A kind of modification of pneumatic filter is according to a first embodiment of the present invention described below in conjunction with Fig. 5-9.The difference of this modification and above-mentioned gas filter is: the first check valve and the second check valve are all integrated on breather pipe, and fixed sleeving is inserted in breather pipe for fixing filter element.Illustrate described difference below.
As described in Figure, pneumatic filter in this modified example comprises: breather pipe 110, airtightly be arranged on the filter element 130 of this breather pipe 110 outside for filtering gas, and for allow gas permeation filter element 130 when opening and when closing barrier gas through the second check valve 120 of this filter element 130, itself and breather pipe 110 are integrally formed, and one end of breather pipe 110 is provided with the first flap 112 thus forms the first check valve, for opening and closing breather pipe 110.In the work of filter, when the first one-way valve opens, the second check valve 120 is closed, and the second check valve 120 is opened when the first closed check valve.
Second check valve 120 comprises: the second flap 121, and to be connected with the second flap 121 and to support the second valve seat 123 of the second flap 121, second valve seat 123 comprises outer ring part 128 and spoke 129, and outer ring part 128 is connected with breather pipe 110 by this spoke 129.Second valve seat 123 has the pore being distributed in breather pipe 110 outside, and this pore is filtered element 130 and covers airtightly, and filter element 130 can be filtered the gas flowed into through this pore.
Filter element 130 is hemispherical, by the edge 132 (i.e. the far-end of filter element 130) of the opening 131 in this hemispherical being embedded the annular groove 125 in the proximal side of the outer ring part 128 of the second valve seat 123, filter element 130 is connected with the second valve seat 123, is preferably tightly connected.This filter element 130 also has fixing hole 133, fixed sleeving 140 passes this fixing hole 133 and inserts in breather pipe 110, thus the edge clamping of fixing hole 133 be held between breather pipe 110 and fixed sleeving 140, thus form being tightly connected between breather pipe 110 and filter element 130.
Pneumatic filter in this modified example is identical with the operation principle of the pneumatic filter in the first embodiment, therefore repeats no more.
Pneumatic filter in pneumatic filter in above-mentioned first embodiment or the modified example of the first embodiment can multiplely use together, fixes multiple pneumatic filter, thus remained in such as nostril by pneumatic filter by holding device.
Below in conjunction with Figure 10-21 explanation pneumatic filter according to a second embodiment of the present invention.As shown in figures 10-13, the pneumatic filter of the second embodiment comprises two identical filters 501 and 502 and be fixedly connected with the holding device 215 of these two filters.Filter wherein in each filter 501 or 502 and the first embodiment is similar, the main distinction is that the second check valve 220 of this filter is positioned at the near-end of breather pipe 210, filter element 230 is contrary with the relative position of the relative position of the second check valve 220 on filter is longitudinal and the filter element 130 in the first embodiment and the second check valve 120, and filter element 230 has the gauffer for increasing filter area.
Specifically, filter 501 or 502 comprises: breather pipe 210, airtightly be arranged on the filter element 230 of this breather pipe 210 outside for filtering gas, and for allow gas permeation filter element 230 when opening and when closing barrier gas through the second check valve 220 of this filter element 230.One end (such as far-end) of breather pipe 210 is provided with the first check valve 503 be made up of the first valve seat 214 and the first flap 212, for opening and closing breather pipe 210.In the work of filter, when the first check valve 503 is opened, the second check valve 220 is closed, and the second check valve 220 is opened when the first check valve 503 is closed.
Holding device 215 is all connected with the first valve seat 214 of filter 501 and 502, and then is connected with the breather pipe 210 of filter 501 and 502, thus is fixedly connected with this two filters 501 and 502.Certainly, holding device 215 also by with filter 501 with 502 other parts be fixedly connected with and realize and filter 501 and 502 be fixedly connected with.Preferably, this holding device 215 has clamping part 216, for such as clamping nose pillar when this filter is used in nostril, thus keeps filter 501 and 502 with nostril, and prevents filter 501 and 502 to be inhaled in nasal cavity.
As shown in fig. 10-15, breather pipe 210 is roughly cylindrical shape, has the internal path 211 of discharging for waste gas.First valve seat 214 of the first check valve 503 is arranged on the far-end of breather pipe 210, is connected and supports the first flap 212 with the first flap 212.First valve seat 214 has the pore be communicated with the internal path 211 of breather pipe 210, first flap 212 is mobilizable, the first valve seat can be opened or closed (specifically, open or close the pore of the first valve seat), thus opening or closing breather pipe 210, the first flap 212 is when closedown the first valve seat and valve seat airtight joint.Preferably, the first flap 212 is flexible, is subject to the draught head effect of its both sides and elastic deformation, such as, waste gas from the proximal flow of breather pipe 210 distally time, the free end 213 of the first flap 212 is easily blown afloat by waste gas, thus opens breather pipe 210; On the contrary, when forming negative pressure in breather pipe 210, this free end 213 to be easily attracted on the first valve seat 214 thus to close breather pipe 210.
First valve seat 214 can be tightly connected with breather pipe 210 or be integrally formed.First valve seat 214 also can as a part for breather pipe 210, and now, the first flap 212 is directly connected with breather pipe 210, for opening and closing breather pipe 210.
As shown in Figure 10-13,18-19, the second check valve 220 comprises: the second flap 221, and be connected with the second flap 221 and the second valve seat 223, second check valve 220 supporting the second flap 221 by this second valve seat 223 and breather pipe 210 airtight joint.Second valve seat 223 comprises seal lip 224, and for wall (wall in the such as nostril) airtight joint of the chamber with this filter of accommodation, sealing antelabium 224 is preferably flexible, makes to be more conducive to form described airtight joint.Second valve seat 223 has the pore being distributed in breather pipe 210 outside, and this pore is filtered element 230 and covers airtightly, and filter element 230 can be filtered the gas flowed into through this pore.Second flap 221 is mobilizable, the second valve seat 223 can be opened or closed, specifically open or close the pore of the second valve seat 223, thus allow gas after filtration element 230 filter after by the pore of the second check valve or stop waste gas to be discharged and contaminated filter element 230 from the pore of the second check valve.Second flap 221 is when closedown the second valve seat 223 and this valve seat airtight joint.Preferably, second flap 221 is flexible, be subject to the draught head effect of its both sides and elastic deformation, such as, when filter combustion gas, air pressure (air pressure namely in breather pipe 210) a little higher than ambient pressure in the chamber holding this filter, thus the second flap 221 is pressed on the second valve seat 223 and closes the second valve seat 223; On the contrary, when forming negative pressure in the chamber holding this filter, the free end 122 of the second flap 221 is started thus is opened the second valve seat 223.Second valve seat 223 can be tightly connected with breather pipe 210.
Such as in the present embodiment, the second valve seat 223 comprises interior annular element 227, outer ring part 228 and connects the spoke 229 of inside and outside annular element, as shown in Figures 18 and 19.This interior annular element 227 comprises fixing hole 226, for passing for fixed sleeving 240, when fixed sleeving 240 is through this fixing hole 226, and when inserting breather pipe 210 from the near-end of breather pipe 210 and fix, between the flange that the edge of this fixing hole 226 is clamped in fixed sleeving 240 near-end and the near-end of breather pipe 210, as shown in figure 12, thus this second valve seat 223 and breather pipe 210 be tightly connected.Second flap 222 can be connected with any one in described interior annular element 227, outer ring part 228 and spoke 229 or its, as long as ensure that the second flap 222 can open or close the second valve seat 223 under the draught head effect of its both sides.
Filter element 240 comprises outer cylinder body 234 and is enclosed within the inner barrel 235 of outer cylinder body 234 inside, interior, gap supplied gas circulation is there is between outer cylinder body 235 and 234, the far-end of outer cylinder body 234 is connected with the far-end of inner barrel 235, the near-end of outer cylinder body 234 is inserted in the annular groove 235 on the outer ring part 228 of the second valve seat 234 airtightly, the near-end of inner barrel 235 has fixing hole 233, fixed sleeving 240 also can pass this fixing hole 233, thus when fixed sleeving 240 inserts breather pipe 210 from the near-end of breather pipe 210 and fixes, the edge of this fixing hole 233 is also clamped between the flange of fixed sleeving near-end and the near-end of breather pipe 210, similar with the edge of fixing hole 226, as shown in figure 12, thus this filter element 230 and the second check valve 220 are tightly connected, and cover the pore of the second check valve 220.Filter element 230 can have a lot of gauffer.Specifically, the barrel of inside and outside cylindrical shell 234,235 has a lot of gauffer, such as straight gauffer, filter element 230 ' annular corrugations as shown in figure 22 etc., to increase the filter area of filter element.
Certainly, filter element 230 can have three or more cylindrical shells that are mutually nested and that be connected successively, and is not only two cylindrical shells.Its principle is similar, repeats no more here.
Here, fixed sleeving 240 can be hard, for when fixing from the near-end insertion breather pipe 210 of breather pipe 210, the second check valve the second valve seat 223, form airtight joint between breather pipe 210 and filter element 230, and when being pulled up from breather pipe 210 by fixed sleeving 240, can easily change filter element 230.
Each check valve in the present invention can adopt silica gel to make, and to realize sensitive unidirectional filtering function, but other material such as rubber, plastics also can be adopted to make.Filter element in the present invention can adopt various material such as polyester fiber to make, to realize gas filtration; And with being used for the treatment of the medicine with health-care effect, can be used for the treatment of and the object that keeps healthy.
When being used in nostril with the filter of the present embodiment, its operation principle is described below.When filter is positioned in nostril along the direction of arrow in Figure 10, seal lip 224 and nostril form airtight joint.When human body air-breathing, in nostril, form negative pressure, therefore the first flap 212 closes breather pipe 210, but the second flap 221 is opened, thus allow air from the pore of the second valve seat 223, to enter human body after filter element 230 filters, as shown in Figure 20, arrow wherein represents air flow direction; When human exhaled breath, the a little higher than ambient pressure of intranarial air pressure, thus the first flap 212 is opened breather pipe 210 for waste gas and is discharged smoothly, but the second flap 221 is closed, thus stop waste gas to be discharged and contaminated filter element 230 from the pore of the second valve seat 223, as shown in Figure 21, arrow wherein represents air flow direction.As can be seen here, filter of the present invention makes the completely isolated of the passage of filtering gas and the passage of combustion gas, avoids the secondary pollution of filter element 230, extends the service life of filter element 230.
And filter element part 230 is in the groove 225 being clamped in the second valve seat 223 and is clamped between the flange of fixed sleeving 240 and the near-end of breather pipe 210, by fixed sleeving 240 is extracted from breather pipe 210, filter element 230 and groove 225 can be easy to depart from, thus new filter element 230 can be changed.When assembling new filter element 230, the near-end of the outer cylinder body 234 of filter element 230 is stuck in groove 225, and by fixed sleeving 240 through the fixing hole 226 of the second valve seat 223 of the second check valve and the fixing hole 233 of the inner barrel 235 of filter element 230, and insert in breather pipe 210, thus between the flange that the edge clamping of fixing hole 226 and 233 is held in fixed sleeving 240 near-end and the near-end of breather pipe 210, so filter element 230 has been changed.
Figure 22 illustrates the modification of pneumatic filter according to a second embodiment of the present invention, and in itself and the second embodiment, the difference of pneumatic filter is to employ the filter element 230 with multi-form gauffer.
Above illustrate technical scheme of the present invention by multiple embodiment.Certainly, the invention is not restricted to described embodiment.Those of ordinary skill in the art should be realized that, can carry out various amendment and replacement based on principle of the present invention to each embodiment, and all such modifications and replacement also fall within the scope of protection of the present invention.
Claims (8)
1. a pneumatic filter, comprising:
Breather pipe;
Airtightly be arranged on the outside filter element for filtering gas of this breather pipe;
First check valve, for opening and closing described breather pipe; And
Second check valve, for allowing filter element described in gas permeation when opening, and when closing barrier gas through described filter element,
Wherein, in the work of filter, the second closed check valve when the first one-way valve opens, and when the first closed check valve the second one-way valve opens;
Described second check valve comprises: the second flap, and it is outside that it is distributed in described breather pipe; And second valve seat, it is for be fixed on the second check valve on described breather pipe and to support the second flap;
Described second valve seat comprises interior annular element, outer ring part and connects the spoke of inside and outside annular element, this second valve seat is airtight by interior annular element to be set on described breather pipe, and be tightly connected by outer ring part and described filter element, described second flap is connected with described interior annular element, one of outer ring part and spoke;
Also comprise fixed sleeving, for being set on described breather pipe or inserting in described breather pipe, described filter element and described second check valve to be clamped in airtightly between described fixed sleeving and described breather pipe.
2. pneumatic filter as claimed in claim 1, wherein, described first check valve comprises:
First flap, it is for closing and opening described breather pipe, and
First valve seat, it is for be fixed on the first check valve on described breather pipe and to support the first flap.
3. pneumatic filter as claimed in claim 1, wherein, described second valve seat has pore, and described filter element covers described pore, and described second flap is for opening and closing described pore.
4. the pneumatic filter as described in one of claim 1-3, wherein, described first and second flaps are flexible.
5. the pneumatic filter as described in one of claim 1-3, wherein, the filtering surface of described filter element has the gauffer increasing filter area.
6. the pneumatic filter as described in one of claim 1-3, wherein, described filter element comprises inner barrel nested with one another and outer cylinder body, between inside and outside cylindrical shell, there is gap, and one end of outer cylinder body is connected with one end of inner barrel.
7. the pneumatic filter as described in one of claim 1-3, wherein, described breather pipe, filter element, the first check valve and the second check valve form filter, this pneumatic filter comprises two described filters and holding device, and described holding device is used for being fixedly connected with described two filters.
8. pneumatic filter as claimed in claim 7, wherein, described holding device is connected with the breather pipe of described two filters, and has clamping part, and this clamping part is used for described two filters of fixing maintenance.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310151272.7A CN103203082B (en) | 2013-04-26 | 2013-04-26 | Pneumatic filter |
| PCT/CN2014/076222 WO2014173320A1 (en) | 2013-04-26 | 2014-04-25 | Air filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310151272.7A CN103203082B (en) | 2013-04-26 | 2013-04-26 | Pneumatic filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103203082A CN103203082A (en) | 2013-07-17 |
| CN103203082B true CN103203082B (en) | 2016-01-06 |
Family
ID=48750619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310151272.7A Expired - Fee Related CN103203082B (en) | 2013-04-26 | 2013-04-26 | Pneumatic filter |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103203082B (en) |
| WO (1) | WO2014173320A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103203082B (en) * | 2013-04-26 | 2016-01-06 | 周立新 | Pneumatic filter |
| CN103405862A (en) * | 2013-08-09 | 2013-11-27 | 洪满 | Tubular breathing filter |
| CN104645516A (en) * | 2013-11-19 | 2015-05-27 | 李先强 | Cigarette type dust filter |
| CN209378345U (en) * | 2017-09-22 | 2019-09-13 | 林晞彤 | Nose breathing air filter |
| KR102393006B1 (en) * | 2020-04-02 | 2022-05-02 | 고재정 | Clip type air exhaust apparatus and mask having the same |
| CN113183998B (en) * | 2021-06-17 | 2023-01-17 | 中铁十六局集团电气化工程有限公司 | Rail vehicle air conditioning device with heat comfort and breathing supply functions |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2417304A1 (en) * | 1978-02-20 | 1979-09-14 | Bourdier Ste Civile Etu Rech | Dust filter for nasal breathing - has flexible body inserted into nostril with air passing over dust trapping coated spiral wound fibres |
| CN2400133Y (en) * | 1999-12-22 | 2000-10-11 | 刘聪 | Hidden nosepiece |
| CN201220049Y (en) * | 2008-07-16 | 2009-04-15 | 胡志卫 | Filtering rhinobyon |
| CN1819857B (en) * | 2003-07-12 | 2010-06-09 | 周立新 | Built-in nose filter |
| CN101743040A (en) * | 2007-05-14 | 2010-06-16 | 帕奥罗·纳尔奇斯 | Nasal cavity filter |
| CN102240426A (en) * | 2010-05-10 | 2011-11-16 | 鲍里斯·卡斯马可夫 | Nose filter |
| CN203280934U (en) * | 2013-04-26 | 2013-11-13 | 周立新 | Gas filter |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3884223A (en) * | 1974-06-26 | 1975-05-20 | Lawrence Peska Ass Inc | Nasal filter |
| US6595215B2 (en) * | 2000-03-13 | 2003-07-22 | Innomed Technologies, Inc. | Ventilation interface for sleep apnea therapy |
| CN2370891Y (en) * | 1999-05-14 | 2000-03-29 | 周和平 | Respiration purifier |
| AU2002237498A1 (en) * | 2001-12-03 | 2003-06-17 | Fausto Lancini | Nose filter |
| AU2008202850A1 (en) * | 2007-06-29 | 2009-01-15 | Bird Healthcare Pty Ltd | Inhalation device |
| KR101164352B1 (en) * | 2010-08-11 | 2012-07-10 | 이행열 | a system of nose mask |
| CN103203082B (en) * | 2013-04-26 | 2016-01-06 | 周立新 | Pneumatic filter |
-
2013
- 2013-04-26 CN CN201310151272.7A patent/CN103203082B/en not_active Expired - Fee Related
-
2014
- 2014-04-25 WO PCT/CN2014/076222 patent/WO2014173320A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2417304A1 (en) * | 1978-02-20 | 1979-09-14 | Bourdier Ste Civile Etu Rech | Dust filter for nasal breathing - has flexible body inserted into nostril with air passing over dust trapping coated spiral wound fibres |
| CN2400133Y (en) * | 1999-12-22 | 2000-10-11 | 刘聪 | Hidden nosepiece |
| CN1819857B (en) * | 2003-07-12 | 2010-06-09 | 周立新 | Built-in nose filter |
| CN101743040A (en) * | 2007-05-14 | 2010-06-16 | 帕奥罗·纳尔奇斯 | Nasal cavity filter |
| CN201220049Y (en) * | 2008-07-16 | 2009-04-15 | 胡志卫 | Filtering rhinobyon |
| CN102240426A (en) * | 2010-05-10 | 2011-11-16 | 鲍里斯·卡斯马可夫 | Nose filter |
| CN203280934U (en) * | 2013-04-26 | 2013-11-13 | 周立新 | Gas filter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103203082A (en) | 2013-07-17 |
| WO2014173320A1 (en) | 2014-10-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103203082B (en) | Pneumatic filter | |
| AU2020100228A4 (en) | Filter Mask with UVC LED | |
| CN1933875B (en) | Respirators | |
| JP4746247B2 (en) | Self-sealing filter connection and gas mask and filter assembly incorporating it | |
| CN104955524A (en) | Respiratory mask having a clean air inlet chamber | |
| KR100900755B1 (en) | Filter for mask and mask using the same | |
| TWI552784B (en) | Nasal mask respirator with filter cartridge | |
| CN105792897A (en) | Bayonet connectors suitable for connecting filter cartridges to respirators | |
| CN104757711B (en) | Protection type environmental protection mask | |
| CN209475418U (en) | Reveal mouth formula protective face mask | |
| CN203280934U (en) | Gas filter | |
| CN211835880U (en) | Protective mask assembly | |
| CN209714045U (en) | Mouth and nose separate protective face mask | |
| CN104548403A (en) | Air supply type respirator device | |
| US20210220679A1 (en) | Filter-type respiratory protective device | |
| CN209711604U (en) | A kind of protective face mask | |
| CN106512253A (en) | Nose cover with breather valve and breathing filter device including nose cover | |
| KR200351789Y1 (en) | emergency respiratory organs for portable | |
| CN204380016U (en) | Gas feeding Mask devices | |
| TWI632935B (en) | Mask | |
| CN214317088U (en) | Mask | |
| CN215309420U (en) | Novel face mask | |
| JP2006346166A (en) | Filter medium | |
| AU2012205181B2 (en) | Respirators | |
| CN205108807U (en) | A expiratory valve for breathing protector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160106 |