CN203280934U - Gas filter - Google Patents
Gas filter Download PDFInfo
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- CN203280934U CN203280934U CN2013202218346U CN201320221834U CN203280934U CN 203280934 U CN203280934 U CN 203280934U CN 2013202218346 U CN2013202218346 U CN 2013202218346U CN 201320221834 U CN201320221834 U CN 201320221834U CN 203280934 U CN203280934 U CN 203280934U
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- breather pipe
- filter element
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Abstract
The utility model provides a gas filter which comprises a vent pipe, a filter element, a first one-way valve and a second one-way valve. The filter element is arranged outside the vent pipe in a gastight mode and is used for filtering gas, the first one-way valve is used for opening and closing the vent pipe, and the second one-way valve is used for allowing the gas to pass through the filter element when the second one-way valve is opened and preventing the gas from passing through the filter element when the second one-way valve is closed. In the operation of the gas filter, the second one-way valve is closed when the first one-way check is opened, and the second one-way valve is opened when the first one-way vale is closed.
Description
Technical field
The utility model relates to pneumatic filter, especially a kind of built-in nose filter, and it is used in air and air is filtered to protect health before entering in human respiratory, also can be used as the delivery system of medical treatment or health care purpose.
Background technology
At present, air pollution has caused health threat for the people in a lot of areas in the world, and people are 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 can make the people feel uncomfortable after putting on mouth mask, and the laminating of mouth mask and face is often not tight yet, causes filter effect not good; In addition, exist some to need air filtration but the work position that wears masks of inconvenience, traffic police on duty on highway for example, they need to blow a whistle with mouth, but mouth mask obviously can hinder their work.
Proposed at present various built-in nose filters, for example 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 existing built-in nose is with filter existent defect still all.For example in use, the gas of characteristics of contaminated respiratory droplets can contact existing nose and leach through filter element with filter element and the part of filter, cause filter element to be subject to the secondary pollution of (wherein containing moisture and hundreds of bacterium) of characteristics of contaminated respiratory droplets gas, thereby reduce the service life of filter element; And in the situation that on filter element with medicine, drug ingedient can be dispelled in external environment condition by breath, causes drug effect to descend.Also for example, filter element often is fixedly connected with its holding device and non-exchange, and when filter element expired service life, holding device also and in the lump abandoned, and causes the use cost of filter to increase.
The utility model content
In view of the above problem that exists in prior art, a kind of pneumatic filter of proposition of the present utility model, comprising: breather pipe; The airtight outside filter element that is used for filtering gas of this breather pipe that is arranged on; The first check valve, be used for opening and closing breather pipe; And second check valve, be used for allowing the gas permeation filter element when opening, and barrier gas sees through filter element when closing, 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 used for sealing and opens breather pipe, and the first valve seat, and it is used for being fixed on the first check valve on breather pipe and supporting the first flap.
Preferably, the second check valve comprises: the second flap, and it is distributed in the breather pipe outside; And second valve seat, it is used for being fixed on the second check valve on breather pipe and supporting the second flap.
Preferably, the second valve seat comprises interior annular element, outer ring spare and the spoke that connects inside and outside annular part, this second valve seat is airtight being set on breather pipe by interior annular element, and by outer ring spare and filter element, be tightly connected, described the second flap is connected and is connected with spoke with interior annular element, outer ring spare.
Preferably, the second valve seat has pore, and filter element covers this pore, and the second flap is used 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 the gas permeation filter element.
Preferably, the first and second flaps are flexible.The first and second flaps can be made by silica gel.
Preferably, pneumatic filter also comprises fixed muffle, is used for being set on described breather pipe or inserts breather pipe, so that filter element and the second check valve are clamped between described fixed muffle and breather pipe airtightly.
Preferably, the filtering surface of filter element has the gauffer that increases filter area.More preferably, filter element comprises nested each other inner barrel and outer cylinder body, has gap between inside and outside cylindrical shell, is used for the supplied gas circulation, and an end of outer cylinder body is connected with an 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 fixing described two filters that keep.
In pneumatic filter of the present utility model, by adopting two gas passages that isolate fully of check valve formation (for example be used for the people and suck the path and the path that is used for people's breath of gas) to be respectively used to enter gas and the rear waste gas of discharging of use that filter filters, avoid waste gas to cause secondary pollution to filter element, thereby extend at double the service life of filter element.And filter element is detachable the installation in filter, make the user easily to change filter element, greatly reduces the use cost of filter.
Description of drawings
Fig. 1 and Fig. 2 are the stereograms according to the pneumatic filter of the utility model the first embodiment.
Fig. 3 and Fig. 4 are respectively longitudinal sectional view and the exploded views according to the pneumatic filter of the utility model the first embodiment.
Fig. 5-9 are respectively front view, face upwarding stereogram, top perspective view, longitudinal sectional view and the exploded views according to the modification of the pneumatic filter of the utility model the first embodiment.
Figure 10-13 are respectively side view, upward view, longitudinal sectional view and the exploded views according to the pneumatic filter of the utility model the second embodiment.
Figure 14 and Figure 15 are respectively according to the breather pipe of the pneumatic filter of the utility model the second embodiment and upward view and the top view of holding device.
Figure 16 and Figure 17 are respectively upward view and the top views according to the filter element of the pneumatic filter of the utility model the second embodiment.
Figure 18 and Figure 19 are respectively longitudinal sectional view and the top views according to the second check valve of the pneumatic filter of the utility model the second embodiment.
Figure 20 and Figure 21 discharge state diagram according to the gas filtration state diagram of the pneumatic filter of the utility model the second embodiment and waste gas.
Figure 22 illustrates the modification according to the pneumatic filter of the utility model the second embodiment, has wherein used the filter element with multi-form gauffer.
The specific embodiment
Further illustrate the technical solution of the utility model below in conjunction with accompanying drawing and by specific embodiment.
Fig. 1-2 illustrates the stereogram according to the pneumatic filter of the utility model the first embodiment, and Fig. 3-4 illustrate respectively longitudinal sectional view and the exploded view of this pneumatic filter.This pneumatic filter comprises: breather pipe 110, the airtight outside filter element 130 that is used for filtering gas of this breather pipe 110 that is arranged on, and for the second check valve 120 that allows gas permeation filter element 130 and barrier gas sees through this filter element 130 when closing when opening, and an end of breather pipe 110 is provided with the first check valve that consists of the first valve seat 114 and the first flap 112, is used for opening and closing breather pipe 110.In the work of filter, the second check valve 120 is closed when the first one-way valve opens, and the second check valve 120 is opened when the first closed check valve.
Pneumatic filter of the present utility model can need to filter the also situation of combustion gas to inflow gas for various, and for example, pneumatic filter of the present utility model can be put into nostril along direction shown in arrow in Fig. 3 (namely vertical) and use.In this article, gas after term " waste gas " expression is filtered by filter will be via the gas (for example people's breath) of this filter discharge after use, when term " near-end " represents that this filter in use, this filter itself or its parts, at the front end of (being that waste gas is discharged on the rightabout of direction) on the inflow direction of gas to be filtered, and term " far-end " represent this filter itself or its parts, the rear end on the inflow direction of air-flow to be filtered.For example, when this filter is used for nostril and uses, an end of the more close human body of " near-end " expression, and " far-end " expression from human body the end away from.Term " vertically " direction is the direction from near-end to far-end.
As Figure 1-4, breather pipe 110 is roughly cylindrical shape, has the internal path 111 of for waste gas, discharging.The first valve seat 114 of the first check valve is arranged on the far-end of breather pipe 110, is connected with the first flap 112 and supports the first flap 112.The first valve seat 114 has the pore that is communicated with the internal path 111 of breather pipe 110, the first flap 112 is mobilizable, can open or close the first valve seat 114(particularly, open or close the pore of the first valve seat 114), thereby open or close breather pipe 110, the first flaps 112 when closing the first valve seat 114 and this valve seat airtight joint.Preferably, the first flap 112 is flexible, is subject to the draught head effect of its both sides and strain can certainly be hard.From the proximal flow of breather pipe 110 during to far-end, the free end 113 of the first flap 112 is easily blown afloat by waste gas, thereby opens breather pipe 110 at waste gas; On the contrary, when the interior formation negative pressure of breather pipe 110, thereby easily being attracted on the first valve seat 114, this free end 113 closes breather pipe 110.The first valve seat 114 can be tightly connected with breather pipe 110 or be integrally formed.The first valve seat 114 also can be used as the part of breather pipe 110, and at this moment, the first flap 112 directly is connected with breather pipe 110, is used 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, the second check valves 120 of supporting the second flap 121 by this second valve seat 123 and breather pipe 110 airtight joints.The second valve seat 123 also comprises fixing hole 126, is used for passing and making the second valve seat 123 be set in breather pipe 110 for breather pipe 110.The second valve seat 123 also comprises seal lip 124, is used for wall (for example wall in the nostril) airtight joint with the chamber that holds this filter, and sealing antelabium 124 is preferably flexible, makes and is more conducive to form described airtight joint.The second valve seat 123 has the pore that is distributed in breather pipe 110 outsides, and this pore is filtered element 130 and covers airtightly, makes filter element 130 to filter the gas that flows into through this pore.The second flap 121 is mobilizable, can open or close the second valve seat 123, specifically open or close the pore of the second valve seat 123, thereby allow gas through the second check valve and then see through filter element 130 or stop waste gas to see through filter element 130 and then from the second check valve, discharge.The second flap 121 is when closing the second valve seat 123 and this valve seat airtight joint.Preferably, the second flap 121 is flexible, be subject to the draught head effect of its both sides and strain, for example, when the filter combustion gas, the a little higher than ambient pressure of air pressure in holding the chamber of this filter (the namely air pressure in breather pipe 110), thus the second flap 121 is pressed on the second valve seat 123 and closes the second valve seat 123; On the contrary, while forming negative pressure in holding the chamber of this filter, thereby being started, this free end 122 opens the second valve seat 123.The 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 spare 128 and the spoke 129 that connects inside and outside annular part, as shown in figs. 1 and 4.Should comprise fixing hole 126 by interior annular element 127.Fixed cover is located on described breather pipe 110 this second valve seat 123 by the fixing hole 126 in the middle of interior annular element 127, and by outer ring spare and filter element 130, be tightly connected, as shown in Figure 3, described the second flap 122 can with described interior annular element 127, outer ring spare 128 and spoke 129 in any one or its be connected, as long as guarantee that the second flap 122 can be under the draught head effect of its both sides and open or close the second valve seat 123.
Preferably, the first check valve and the second check valve are made by the silica gel resin.
For the ease of the stability of assembling and raising connection, breather pipe 110 can be made by hard material.
Its operation principle is described while below with filter, being used for nostril.In the time of in filter is positioned over nostril along the direction of arrow in Fig. 3, seal lip 124 forms airtight joint with nostril.When human body is air-breathing, form negative pressure in nostril, therefore the first flap 112 is adsorbed and closes breather pipe 110, but the second flap 121 is opened, thereby allow air to arrive filter element 130 through the pore of the second valve seat 123, enter human body after filter element 130 filters; When human body is exhaled, a little higher than ambient pressure of intranarial air pressure, thus the first flap 112 is opened breather pipe 110 for the waste gas discharge, and still the second flap 121 is closed, thereby stops waste gas to be discharged from the pore of the second valve seat 123 through filter element 130.This shows, filter of the present utility model makes the isolation fully of the passage of the passage of filtering gas and combustion gas, has avoided the secondary pollution to filter element 130, has extended the service life of filter element 130.And filter element 130 removably is clamped on the second valve seat 123 and breather pipe 110, can change when needed.
In the utility model, can carry out various modifications to filter.For example, the shape of breather pipe 110 is not limited to cylindrical shape, can have other shapes such as polyhedron shape, taper type.The first check valve may not necessarily be arranged on the far-end of breather pipe, also can be arranged on the near-end of breather pipe, any position between far-end and near-end even, as long as can realize that waste gas discharges smoothly but stop not filtering gas to enter breather pipe 110 through breather pipe 110.The second check valve may not be arranged on the far-end of filter as shown 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, is for example 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, perhaps filter element 130 and the second check valve 120 relative position on filter is vertical also can change, as long as guarantee that filter element 130 can cover the pore of the second check valve 120, thereby realize that the second flap 121 can allow and stop gas permeation filter element 130 when opening and closing this pore.
Below in conjunction with a kind of modification of Fig. 5-9 explanation according to the pneumatic filter of the utility model the first embodiment.The difference of this modification and above-mentioned gas filter is: the first check valve and the second check valve all are integrated on breather pipe, and fixed sleeving is to be inserted in breather pipe to be used for fixedly filter element.Below illustrate described difference.
As described in Figure, pneumatic filter in this modified example comprises: breather pipe 110, the airtight outside filter element 130 that is used for filtering gas of this breather pipe 110 that is arranged on, and for the second check valve 120 that allows gas permeation filter element 130 and barrier gas sees through this filter element 130 when closing when opening, itself and breather pipe 110 are integrally formed, and thereby an end of breather pipe 110 is provided with the first flap 112 and forms the first check valve, is used for opening and closing breather pipe 110.In the work of filter, the second check valve 120 is closed when the first one-way valve opens, and the second check valve 120 is opened when the first closed check valve.
The second check valve 120 comprises: the second flap 121, and the second valve seat 123 that is connected and supports the second flap 121 with the second flap 121, the second valve seat 123 comprises outer ring spare 128 and spoke 129, and outer ring spare 128 is connected with breather pipe 110 by this spoke 129.The second valve seat 123 has the pore that is distributed in breather pipe 110 outsides, and this pore is filtered element 130 and covers airtightly, makes filter element 130 to filter the gas that flows into through this pore.
The operation principle of the pneumatic filter in the pneumatic filter in this modified example and the first embodiment is identical, therefore repeats no more.
Pneumatic filter in pneumatic filter in above-mentioned the first embodiment or the modified example of the first embodiment can be a plurality of uses together, by holding device, fixes a plurality of pneumatic filters, thereby pneumatic filter is for example remained in nostril.
Below in conjunction with the pneumatic filter of Figure 10-21 explanation according to the utility model the second embodiment.As shown in Figure 10-13, the pneumatic filter of the second embodiment comprises two identical filters 501 and 502 and the holding device 215 that is fixedly connected with these two filters.Wherein the filter in each filter 501 or the 502 and 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, the relative position on vertically is opposite with the relative position of the filter element 130 in the first embodiment and the second check valve 120 at filter for filter element 230 and the second check valve 220, and filter element 230 has the gauffer for the increase filter area.
Particularly, filter 501 or 502 comprises: breather pipe 210, the airtight outside filter element 230 that is used for filtering gas of this breather pipe 210 that is arranged on, and for the second check valve 220 that allows gas permeation filter element 230 and barrier gas sees through this filter element 230 when closing when opening.One end of breather pipe 210 (for example far-end) is provided with the first check valve 503 that consists of the first valve seat 214 and the first flap 212, is used for opening and closing breather pipe 210.In the work of filter, the second check valve 220 is closed when the first check valve 503 is opened, and the second check valve 220 is opened when the first check valve 503 is closed.
As shown in Figure 10-15, breather pipe 210 is roughly cylindrical shape, has the internal path 211 of for waste gas, discharging.The first valve seat 214 of the first check valve 503 is arranged on the far-end of breather pipe 210, is connected with the first flap 212 and supports the first flap 212.The first valve seat 214 has the pore that is communicated with the internal path 211 of breather pipe 210, the first flap 212 is mobilizable, can open or close the first valve seat (particularly, open or close the pore of the first valve seat), thereby open or close breather pipe 210, the first flaps 212 when closing the first valve seat and the valve seat airtight joint.Preferably, the first flap 212 is flexible, is subject to the draught head effect of its both sides and strain, and for example, from the proximal flow of breather pipe 210 during to far-end, the free end 213 of the first flap 212 is easily blown afloat by waste gas, thereby opens breather pipe 210 at waste gas; On the contrary, when the interior formation negative pressure of breather pipe 210, thereby easily being attracted on the first valve seat 214, this free end 213 closes breather pipe 210.
The first valve seat 214 can be tightly connected with breather pipe 210 or be integrally formed.The first valve seat 214 also can be used as the part of breather pipe 210, and at this moment, the first flap 212 directly is connected with breather pipe 210, is used 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, the second check valves 220 of supporting the second flap 221 by this second valve seat 223 and breather pipe 210 airtight joints.The second valve seat 223 comprises seal lip 224, is used for wall (for example wall in the nostril) airtight joint with the chamber that holds this filter, and sealing antelabium 224 is preferably flexible, makes and is more conducive to form described airtight joint.The second valve seat 223 has the pore that is distributed in breather pipe 210 outsides, and this pore is filtered element 230 and covers airtightly, makes filter element 230 to filter the gas that flows into through this pore.The second flap 221 is mobilizable, can open or close the second valve seat 223, specifically open or close the pore of the second valve seat 223, thereby allow gas to discharge and contaminated filter element 230 from the pore of the second check valve by pore or the prevention waste gas of the second check valve after element 230 filtrations after filtration.The second flap 221 is when closing the second valve seat 223 and this valve seat airtight joint.Preferably, the second flap 221 is flexible, be subject to the draught head effect of its both sides and strain, for example, when the filter combustion gas, the a little higher than ambient pressure of air pressure in holding the chamber of this filter (the namely air pressure in breather pipe 210), thus the second flap 221 is pressed on the second valve seat 223 and closes the second valve seat 223; On the contrary, while forming negative pressure in holding the chamber of this filter, thereby being started, the free end 122 of the second flap 221 opens the second valve seat 223.The second valve seat 223 can be tightly connected with breather pipe 210.
For example in the present embodiment, the second valve seat 223 comprises interior annular element 227, outer ring spare 228 and the spoke 229 that connects inside and outside annular part, as shown in Figures 18 and 19.Should comprise fixing hole 226 by interior annular element 227, be used for passing for fixed sleeving 240, when fixed sleeving 240 passes this fixing hole 226, and from the near-end of breather pipe 210, insert breather pipe 210 and fixedly the time, the edge of this fixing hole 226 is clamped between the near-end of the flange of fixed sleeving 240 near-ends and breather pipe 210, as shown in figure 12, thus this second valve seat 223 is tightly connected with breather pipe 210.The second flap 222 can with described interior annular element 227, outer ring spare 228 and spoke 229 in any one or its be connected, as long as guarantee that the second flap 222 can be under the draught head effect of its both sides and open or close the second valve seat 223.
the inner barrel 235 that filter element 240 comprises outer cylinder body 234 and is enclosed within outer cylinder body 234 inside, interior, there is gap supplied gas circulation 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 annular groove 235 on the outer ring spare 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, thereby at fixed sleeving 240, from the near-end of breather pipe 210, insert breather pipe 210 and fixedly the time, the edge of this fixing hole 233 also is clamped between the near-end of the flange of fixed sleeving near-end and breather pipe 210, similar with the edge of fixing hole 226, as shown in figure 12, thereby 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 gauffers.Particularly, have a lot of gauffers on inside and outside cylindrical shell 234,235 barrel, for example straight gauffer, filter element as shown in figure 22 230 ' annular gauffer etc., to increase the filter area of filter element.
Certainly, filter element 230 can have three or more cylindrical shells 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, be used for inserting breather pipe 210 fixedly the time at the near-end from breather pipe 210, form airtight joint between the second valve seat 223, breather pipe 210 and the filter element 230 of the second check valve, and when fixed sleeving 240 is pulled up from breather pipe 210, can easily change filter element 230.
Each check valve in the utility model can adopt silica gel to make, and to realize sensitive unidirectional filtering function, but also can adopt other materials such as rubber, plastics to make.Filter element in the utility model can adopt various materials for example polyester fiber make, to realize gas filtration; And can, with the medicine that is used for the treatment of with health-care effect, be used for the treatment of and the purpose that keeps healthy.
Its operation principle is described while below with the filter of the present embodiment, being used for nostril.In the time of in filter is positioned over nostril along the direction of arrow in Figure 10, seal lip 224 forms airtight joint with nostril.When human body is air-breathing, form negative pressure in nostril, therefore the first flap 212 is closed breather pipe 210, but the second flap 221 is opened, thereby allow air to enter human body from the pore of the second valve seat 223 after filter element 230 filters, as shown in Figure 20, arrow wherein represents air flow direction; When human body is exhaled, the a little higher than ambient pressure of intranarial air pressure, thereby the first flap 212 is opened breather pipe 210 and is discharged smoothly for waste gas, but the second flap 221 is closed, thereby 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, wherein arrow represents air flow direction.This shows, filter of the present utility model makes the isolation fully of the passage of the passage of filtering gas and combustion gas, has avoided the secondary pollution of filter element 230, has extended the service life of filter element 230.
And filter element part 230 be clamped in the groove 225 of the second valve seat 223 and be clamped in the flange of fixed sleeving 240 and the near-end of breather pipe 210 between, by fixed sleeving 240 is extracted from breather pipe 210, can be easy to filter element 230 and groove 225 are broken away from, thereby can change new filter element 230.When assembling new filter element 230, the near-end of the outer cylinder body of filter element 230 234 is stuck in groove 225, and fixed sleeving 240 is passed the fixing hole 233 of the inner barrel 235 of the fixing hole 226 of the second valve seat 223 of the second check valve and filter element 230, and insert in breather pipe 210, thereby the edge clamping of fixing hole 226 and 233 is held between the near-end of the flange of fixed sleeving 240 near-ends and breather pipe 210, so filter element 230 is changed, completes.
Figure 22 illustrates the modification according to the pneumatic filter of the utility model the second embodiment, and in itself and the second embodiment, the difference of pneumatic filter has been to use the filter element 230 with multi-form gauffer.
Above by a plurality of embodiment, for example understand the technical solution of the utility model.Certainly, the utility model is not limited to described embodiment.Those of ordinary skills should be realized that, can carry out various modifications and replacement to each embodiment based on principle of the present utility model, and all such modifications and replacement also fall in protection domain of the present utility model.
Claims (30)
1. pneumatic filter comprises:
Breather pipe;
The airtight outside filter element that is used for filtering gas of this breather pipe that is arranged on;
The first check valve, be used for opening and closing described breather pipe; And
The second check valve, be used for allowing the described filter element of gas permeation when opening, and barrier gas sees through described filter element when closing,
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.
2. pneumatic filter as claimed in claim 1, wherein, described the first check valve comprises:
The first flap, it is used for sealing and opens described breather pipe, and
The first valve seat, it is used for being fixed on the first check valve on described breather pipe and supporting the first flap.
3. pneumatic filter as claimed in claim 1 or 2, wherein, described the second check valve comprises:
The second flap, it is outside that it is distributed in described breather pipe; And
The second valve seat, it is used for being fixed on the second check valve on described breather pipe and supporting the second flap.
4. pneumatic filter as claimed in claim 3, wherein, described the second valve seat comprises interior annular element, outer ring spare and the spoke that connects inside and outside annular part, this second valve seat is airtight being set on described breather pipe by interior annular element, and by outer ring spare and described filter element, be tightly connected, described the second flap is connected and is connected with spoke with described interior annular element, outer ring spare.
5. pneumatic filter as claimed in claim 3, wherein, described the second valve seat has pore, and described filter element covers described pore, and described the second flap is used for opening and closing described pore.
6. pneumatic filter as claimed in claim 4, wherein, described the second valve seat has pore, and described filter element covers described pore, and described the second flap is used for opening and closing described pore.
7. pneumatic filter as described in one of claim 1-6, wherein, described the first and second flaps are flexible.
8. pneumatic filter as described in one of claim 1-6, also comprise fixed muffle, be used for being set on described breather pipe or inserting described breather pipe, so that described filter element and described the second check valve are clamped between described fixed muffle and described breather pipe airtightly.
9. pneumatic filter as described in one of claim 1-6, wherein, the filtering surface of described filter element has the gauffer that increases filter area.
10. pneumatic filter as claimed in claim 7, wherein, the filtering surface of described filter element has the gauffer that increases filter area.
11. pneumatic filter as claimed in claim 8, wherein, the filtering surface of described filter element has the gauffer that increases filter area.
12. pneumatic filter as described in one of claim 1-6, wherein, described filter element comprises nested each other inner barrel and outer cylinder body, has gap between inside and outside cylindrical shell, and an end of outer cylinder body is connected with an end of inner barrel.
13. pneumatic filter as claimed in claim 7, wherein, described filter element comprises nested each other inner barrel and outer cylinder body, has gap between inside and outside cylindrical shell, and an end of outer cylinder body is connected with an end of inner barrel.
14. pneumatic filter as claimed in claim 8, wherein, described filter element comprises nested each other inner barrel and outer cylinder body, has gap between inside and outside cylindrical shell, and an end of outer cylinder body is connected with an end of inner barrel.
15. pneumatic filter as claimed in claim 9, wherein, described filter element comprises nested each other inner barrel and outer cylinder body, has gap between inside and outside cylindrical shell, and an end of outer cylinder body is connected with an end of inner barrel.
16. pneumatic filter as claimed in claim 10, wherein, described filter element comprises nested each other inner barrel and outer cylinder body, has gap between inside and outside cylindrical shell, and an end of outer cylinder body is connected with an end of inner barrel.
17. pneumatic filter as claimed in claim 11, wherein, described filter element comprises nested each other inner barrel and outer cylinder body, has gap between inside and outside cylindrical shell, and an end of outer cylinder body is connected with an end of inner barrel.
18. pneumatic filter as described in one of claim 1-6, 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.
19. pneumatic filter as claimed in claim 18, 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 fixing described two filters that keep.
20. pneumatic filter as claimed in claim 7, 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.
21. pneumatic filter as claimed in claim 8, 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.
22. pneumatic filter as claimed in claim 9, 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.
23. pneumatic filter as claimed in claim 10, 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.
24. pneumatic filter as claimed in claim 11, 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.
25. pneumatic filter as claimed in claim 12, 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.
26. pneumatic filter as claimed in claim 13, 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.
27. pneumatic filter as claimed in claim 14, 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.
28. pneumatic filter as claimed in claim 15, 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.
29. pneumatic filter as claimed in claim 16, 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.
30. pneumatic filter as claimed in claim 17, 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202218346U CN203280934U (en) | 2013-04-26 | 2013-04-26 | Gas filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202218346U CN203280934U (en) | 2013-04-26 | 2013-04-26 | Gas filter |
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| Publication Number | Publication Date |
|---|---|
| CN203280934U true CN203280934U (en) | 2013-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202218346U Expired - Fee Related CN203280934U (en) | 2013-04-26 | 2013-04-26 | Gas filter |
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| Country | Link |
|---|---|
| CN (1) | CN203280934U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103203082A (en) * | 2013-04-26 | 2013-07-17 | 周立新 | Gas filter |
| CN109027272A (en) * | 2018-10-31 | 2018-12-18 | 廊坊金盾华通科技有限公司 | A kind of fire-preventing check valve |
| CN109354087A (en) * | 2018-12-19 | 2019-02-19 | 珠海格力电器股份有限公司 | Liquid storage device, water treatment system and water purification equipment |
-
2013
- 2013-04-26 CN CN2013202218346U patent/CN203280934U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103203082A (en) * | 2013-04-26 | 2013-07-17 | 周立新 | Gas filter |
| WO2014173320A1 (en) * | 2013-04-26 | 2014-10-30 | Zhou Lixin | Air filter |
| CN103203082B (en) * | 2013-04-26 | 2016-01-06 | 周立新 | Pneumatic filter |
| CN109027272A (en) * | 2018-10-31 | 2018-12-18 | 廊坊金盾华通科技有限公司 | A kind of fire-preventing check valve |
| CN109354087A (en) * | 2018-12-19 | 2019-02-19 | 珠海格力电器股份有限公司 | Liquid storage device, water treatment system and water purification equipment |
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