CN211301824U - Breathing and breathing branch channel flow general mask for filtering and purifying air by filter bag - Google Patents

Breathing and breathing branch channel flow general mask for filtering and purifying air by filter bag Download PDF

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Publication number
CN211301824U
CN211301824U CN201921819637.8U CN201921819637U CN211301824U CN 211301824 U CN211301824 U CN 211301824U CN 201921819637 U CN201921819637 U CN 201921819637U CN 211301824 U CN211301824 U CN 211301824U
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filter bag
filter
expiration
connecting pipe
pipe
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李明忠
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Shanghai Ruizheng Environmental Protection Technology Development Co ltd
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Shanghai Ruizheng Environmental Protection Technology Development Co ltd
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Abstract

The utility model discloses a general gauze mask of crossing filter air purification of filter bag of exhaling and breathing in branch passageway stream designs into the bow-shaped body to the outer decorations filter mantle to satisfy the installation to support, exhaust box, cross filter bag and breathing pipe. In order to discharge the expired air smoothly, the two outer sides of the external decorative filter cover are provided with exhaust boxes; in order to have enough fresh air quantity during air suction, filter bags are arranged on the two inner sides of the outer decoration filter cover; the breathing conduit is connected with the silica gel joint and the expiration one-way valve in the exhaust box, the inspiration soft connecting pipe is connected with the inspiration inlet short pipe on the breathing conduit, and the inspiration soft connecting pipe is communicated with the filter bag interface pipe, so that the expiration positive pressure or inspiration negative pressure in the breathing conduit can be maintained, and the circulation of expiration and inspiration sub-channels is realized. The utility model overcomes gauze mask side leakage, expiration secondary suction and the not enough defect of new air volume of inhaling have convenient to use, breathe unobstructed, and filtration efficiency is high, and the protecting effect is excellent, crosses filter bag and exhaust filter and changes convenient advantage.

Description

Breathing and breathing branch channel flow general mask for filtering and purifying air by filter bag
Technical Field
The utility model relates to a breathe out and breathe in branch passageway and flow general gauze mask of crossing filter air purification of filter bag belongs to health protection product technical field.
Background
In order to avoid the invasion of dust, bacteria and waste gas in the air to the respiratory system, the mask is worn by the user, and the mask is a common protection method at present, has more types, and comprises a common dustproof anti-pollution mask and a special compound-proof mask for preventing toxic and harmful gases. The existing mask has many problems: 1. because the shape of the face of a human body is uneven, the wearing of the mask is difficult to ensure that no side leakage is generated, so that the due protection effect of the mask is reduced; 2. in the breathing process, the exhaled gas and the inhaled gas completely flow through the same channel, and the exhaled gas can be inhaled for the second time to influence the breathing quality because the resistance of the inhalation and exhalation in the mask is large (according to the national standard GB/T32610-2016 of the mask, the filtering efficiency is divided into 99% of I level, 95% of II level and 90% of III level, wherein the inhalation resistance of 99% of I level is less than 175Pa, and the exhalation resistance is less than 145 Pa); 3. because of the limitation of the nostril position of the human body, the effective filtering area of the mask is limited during breathing, and the requirement of people on air inhalation cannot be met to the maximum extent.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the problem of how make breathing in the gauze mask with exhale separately and prevent the side leakage is solved, improve filtration efficiency and protecting effect, provide sufficient effective filtration area simultaneously, satisfy the requirement of inhaling of people to the air.
In order to solve the technical problem, the technical scheme of the utility model is to provide a breathing tube, a fold connecting pipe, a silica gel joint, a support, an exterior filter cover, a breathing outlet short pipe, an exhalation one-way valve, an exhaust box, an inhalation inlet short pipe, an inhalation soft connecting pipe, a filter bag and a frenum, wherein the head of the breathing tube is connected with the lower end of the fold connecting pipe, the upper end of the fold connecting pipe is connected with the lower end of the silica gel joint, the fold connecting pipe is arranged on the exterior filter cover through the support, the tail of the breathing tube is connected with the lower end of the exhalation outlet short pipe, the upper end of the exhalation outlet short pipe is provided with the exhalation one-way valve, the exhalation outlet short pipe and the exhalation one-way valve are both arranged in the exhaust box, the middle position of the breathing tube is provided with the inhalation inlet short pipe communicated with the breathing tube, the short pipe of the air suction inlet is connected with the air suction flexible connecting pipe, one end of the air suction flexible connecting pipe is communicated with a filter bag which can be communicated with the outside air, and the two sides of the exterior filter cover are provided with tying belts; the shape of the silica gel joint is matched with the shape of the nasal cavity; the outer decorative filter cover is of an inwards concave arched structure; the bracket and the exhaust box are fixed on the external decorative filter cover.
Preferably, the top of the exterior filter is provided with a soft fastening piece for enabling the exterior filter to be attached to the nose bridge.
Preferably, the connection part of the folded connecting pipe and the support is vertically arranged, the upper end of the folded connecting pipe is bent inwards, and the bent part of the folded connecting pipe is arranged above the support.
Preferably, the filter bag is of a flat structure; the volume of the filter bag is more than 20 ml.
Preferably, the bracket is provided with two pipe seat holes, and the two pipe seat holes are respectively connected with the two folded connecting pipes in an interference fit manner; the fold-shaped connecting pipe can axially rotate along the lower end of the fold-shaped connecting pipe in the pipe seat hole.
Preferably, the upper end of the silica gel joint is of a bell mouth structure, the lower end of the silica gel joint is of a straight tube structure, the middle part of the silica gel joint is of a lantern structure, and the upper end and the lower end of the lantern structure are respectively connected with the small mouth end of the bell mouth structure and one end of the straight tube structure; the upper end and the lower end of the lantern structure are both circular planes, and the left side and the right side of the longitudinal section of the lantern structure are both circular arcs.
Preferably, the filter bag is communicated with the filter bag mouth-piece, one end of the filter bag mouth-piece is arranged in the filter bag and is connected with the side wall of one side of the filter bag, the other end of the filter bag mouth-piece penetrates through the other side of the filter bag and is communicated with the air suction soft connecting pipe, and an air inlet hole is arranged in the middle of the filter bag mouth-piece and is arranged in the filter bag.
Preferably, the filter bag mouth-piece is connected with the air suction soft connecting pipe through a valve box, and the other end of the filter bag mouth-piece is arranged in the valve box; the valve box is internally provided with an air suction one-way valve and a valve seat piece, the air suction one-way valve leans against the outlet side of the filter bag connector tube, the valve seat piece is fixed above the air suction one-way valve, and the air suction one-way valve is vertically hung on the valve seat piece; the inspiration one-way valve and the expiration one-way valve are both formed by combining a rigid diaphragm and a flexible diaphragm; the air suction one-way valve, the valve box and the filter bag mouth-piece are all two and are symmetrically arranged.
Preferably, the outlet of the exhalation outlet short pipe is vertically arranged upwards; a chamfer is arranged at the joint of the expiration outlet short pipe and the expiration one-way valve.
Preferably, the exhaust box is provided with an exhaust filter sheet communicated with the outside air; a heat exchange ring is arranged at the joint of the breathing conduit and the short pipe of the air suction inlet; the silica gel joint, roll over shape connecting pipe, breathing pipe, expiration export nozzle stub, expiration check valve, filter bag, breathe in soft takeover, exhaust box, exhaust cassette, heat transfer circle, the import nozzle stub of breathing in be two and symmetry setting.
Preferably, the silica gel joint, the folded connecting pipe, the breathing conduit, the short expiration outlet pipe, the expiration one-way valve, the filter bag, the soft inspiration connecting pipe, the exhaust box and the short inspiration inlet pipe are all two and are symmetrically arranged.
Preferably, the exterior filter cover is of an inwards concave bow-shaped structure, the middle-effect filtering stage is made of melt-blown filter materials or pure cotton filter materials, the melt-blown filter materials or the pure cotton filter materials are matched with the bracket, the exhaust box and the face of a human body, and the tying belts are connected to two side edges of the exterior filter cover.
Preferably, the soft buckle piece is wrapped on the top of the outer side of the outer decoration filter cover.
Preferably, the bracket is a half-moon-shaped sheet and is made of plastic, and the two near sides of the center line are symmetrically provided with the tube seat holes.
Preferably, the silica gel joint is made of flexible silica gel and can form a seal with the nostril; the wall thickness that silica gel connects is from up getting thinner gradually down, and the wall thickness of straight tube column structure is 2mm, and the wall thickness of the structural macrostoma end of horn mouth is 0.2 mm.
Preferably, the bending angle of the bending part of the folded connecting pipe is 10-15 degrees.
Preferably, the breathing conduit is made of plastic, and the inner diameter of the pipe of the breathing conduit is 6-15 mm.
Preferably, the exhalation outlet short pipe is made of plastic and is L-shaped; the wall thickness of the connection part of the expiration outlet short pipe and the expiration one-way valve is less than 0.2 mm.
Preferably, the filter bag is of a flat structure and a high-efficiency filter stage, is made of melt-blown filter materials or pure cotton filter materials, and is provided with a filter bag mouthpiece in the cavity, so that enough fresh air can be sucked during air suction, and more than 99% of air can be filtered.
Preferably, the mass of each of the inspiration one-way valve and the expiration one-way valve is less than 0.3 g.
Preferably, the exhaust box is a rectangular semi-slope body, is made of a plastic sheet and is provided with a box cover, the box is internally provided with an expiration one-way valve and an expiration outlet short pipe, the expiration one-way valve is positioned at the upper end of the expiration outlet short pipe, and the bottom surface of the box is provided with a communication hole of the breathing conduit and an assembly hole corresponding to the exterior filter cover.
Preferably, the exhaust filter plate, the intermediate-efficiency filter stage, is made of melt-blown filter material or pure cotton filter material and is mounted on the exhaust box.
Preferably, the air suction one-way valve is arranged in the valve box and leans against the outlet side of the filter bag mouth piece to form a closed state; one end of the valve box is connected with the filter bag mouth piece, and the other end of the valve box is connected with the air suction soft connecting pipe; the valve box is internally provided with a valve seat piece which is fixed above the air suction one-way valve, and the air suction one-way valve is vertically hung on the valve seat piece.
Preferably, the filter bag mouth-piece is made of plastics and is an inner cavity bracket of the filter bag and an air outlet, an air inlet hole is formed in the pipe wall in the inner cavity of the filter bag mouth-piece, and air flows to the outlet of the filter bag mouth-piece through the air inlet hole and then flows to the air suction one-way valve during air suction.
Preferably, the heat exchange ring is made of metal materials and is in a spiral spring shape or a sheet shape, and the heat exchange area of the heat exchange ring is larger than 0.0012 square meter.
The utility model discloses an outer decorations filter mantle and support are major structure, design into the bow-shaped body to outer decorations filter mantle to satisfy the installation to support, exhaust box, cross filter bag and breathing pipe. In order to discharge the expired air smoothly, the two outer sides of the external decorative filter cover are provided with exhaust boxes; in order to have enough fresh air quantity during air suction, filter bags are arranged on the two inner sides of the outer decoration filter cover; in order to effectively utilize the expiratory positive pressure or the inspiratory negative pressure during respiration, a respiration conduit is connected with a silica gel joint and an expiratory one-way valve in an exhaust box, one end of an inspiratory soft connecting pipe is connected with an inspiratory inlet short pipe on the respiration conduit, the other end of the inspiratory soft connecting pipe is communicated with a filter bag interface pipe, and the expiratory sub-channel circulation and the inspiratory sub-channel circulation are realized by utilizing the expiratory positive pressure or the inspiratory negative pressure during respiration.
The utility model overcomes gauze mask side leakage, expiration secondary suction and the not enough defect of new air volume of inhaling have convenient to use, breathe unobstructed, and filtration efficiency is high, and the protecting effect is excellent, crosses filter bag and exhaust filter and changes convenient advantage.
Drawings
FIG. 1 is a schematic view of a mask with a filter bag for filtering purified air for use in both exhalation and inhalation sub-channel flows;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a top view of FIG. 1;
FIG. 4 is a cross-sectional view B-B of FIG. 3;
fig. 5 is a schematic view of the connection between the two ends of the valve box and the suction hose and the filter bag mouthpiece respectively.
Wherein: 1 is an external decorative filter cover; 2 is a bracket; 3 is a silica gel joint; 4 is a folded connecting pipe; 5 is a breathing conduit; 6 is a short expiration outlet pipe; 7 is an expiration one-way valve; 8 is a filter bag; 9 is an air suction flexible connecting pipe; 10 is an exhaust box; 11 is an exhaust filter sheet; 12 is a heat exchange ring; 13 is a soft buckle sheet; 14 is a lace; 15 is a short suction inlet pipe; 16 is a suction one-way valve; 17 is a valve box; and 18 is a filter bag mouthpiece.
Detailed Description
In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
Example 1
The utility model relates to a general gauze mask of crossing filter bag filtration air purification of exhaling and breathing in branch passageway stream, as shown in fig. 1-4, it includes breathing pipe 5, outer decorations filter mantle 1, support 2, silica gel joint 3, the shape of book connecting pipe 4, exhale export nozzle stub 6, exhale check valve 7, cross filter bag 8, breathe in soft takeover 9, exhaust box 10, exhaust filter plate 11, heat transfer circle 12, soft buckle piece 13, frenulum 14, breathe in import nozzle stub 15, breathe in check valve 16, valve box 17, cross filter bag mouth-piece 18, breathing pipe 5's internal diameter is 5-15 mm. The head of breathing pipe 5 is connected with the lower extreme of book shape connecting pipe 4, and the upper end of book shape connecting pipe 4 is connected with the lower extreme that silica gel connects 3, and book shape connecting pipe 4 is located on the exterior trim filter mantle 1 through support 2, and support 2 locates the inboard middle part of exterior trim filter mantle 1, and the top of exterior trim filter mantle 1 is equipped with and makes the exterior trim filter mantle 1 paste the flexible buckle piece 13 of tight bridge of the nose. The tail of the breathing conduit 5 is connected with the lower end of the expiration outlet short pipe 6, the upper end of the expiration outlet short pipe 6 is provided with an expiration one-way valve 7, the outlet of the expiration outlet short pipe 6 is vertically arranged upwards, the expiration outlet short pipe 6 and the expiration one-way valve 7 are both arranged in the exhaust box 10, the exhaust box 10 is provided with exhaust filter sheets 11 communicated with the outside air, and the outer side of each exhaust box 10 is provided with at least one exhaust filter sheet 11. An air suction inlet short pipe 15 communicated with the breathing conduit 5 is arranged in the middle of the breathing conduit 5, the air suction inlet short pipe 15 is connected with an air suction soft connecting pipe 9, one end of the air suction soft connecting pipe 9 is communicated with a filter bag 8 communicated with the outside air, a heat exchange ring 12 is arranged at the joint of the breathing conduit 5 and the air suction inlet short pipe 15, and tying belts 14 are arranged on two sides of the exterior filter cover 1; the shape of the silica gel joint 3 is matched with the shape of the nasal cavity. The exhaust box 10 is fixed to both outer sides of the exterior filter 1. The filter bags 8 are arranged at two inner sides of the exterior filter cover 1.
The exterior trim filter mantle 1 is an inwards concave bow-shaped structure, has a middle-effect filtering stage, is made of melt-blown filter material or pure cotton filter material, is matched with the bracket 2, the exhaust box 10 and the face of a human body, the soft buckle piece 13 wraps the top of the outer side of the exterior trim filter mantle 1, and the tying belts 14 are connected to two side edges of the exterior trim filter mantle 1.
The support 2 is a half-moon-shaped sheet and is made of plastics, pipe seat holes are symmetrically formed in two near sides of a center line, namely, two pipe seat holes are formed in the support 2, and mounting holes of the exterior filter cover 1 are symmetrically formed in two far sides of the center line. The two pipe seat holes are respectively connected with the two folded connecting pipes 4 in an interference fit manner; the fold-shaped connecting pipe 4 can axially rotate along the lower end of the fold-shaped connecting pipe 4 in the pipe seat hole.
The upper end of the silica gel joint 3 is of a bell mouth structure, the lower end of the silica gel joint 3 is of a straight tube structure, the middle part of the silica gel joint 3 is of a lantern structure, and the upper end and the lower end of the lantern structure are respectively connected with the small mouth end of the bell mouth structure and one end of the straight tube structure; the upper end and the lower end of the lantern structure are both circular planes, and the left side and the right side of the longitudinal section of the lantern structure are both circular arcs. The silica gel joint 3 is made of flexible silica gel and can form a seal with nostrils. The wall thickness of silica gel joint 3 is from up getting thinner gradually down, and the wall thickness of straight tube column structure is 2mm, and the wall thickness of the structural macrostoma end of horn mouth is 0.2 mm.
The connection part of the folded connecting pipe 4 and the support 2 is vertically arranged, the upper end of the folded connecting pipe 4 is bent towards the inner side, and the bent part of the folded connecting pipe 4 is arranged above the support 2. The bending angle of the bending part of the bent connecting pipe 4 is 10-15 degrees.
The breathing conduit 5 is made of plastic, and the top of the breathing conduit 5 is provided with a socket connected with the folded connecting pipe 4. The respiratory conduits 5 are respectively provided with two sections, the upper section is vertically arranged and is connected with the folded connecting pipe 4; the lower section is arranged in a downward inclined way, and a heat exchange ring 12 is arranged in the lower section. The inner diameter of the tube of the breathing conduit 5 is 6-15 mm.
The expiration outlet short pipe 6 is made of plastic, is L-shaped, and is provided with an outer chamfer at the upper outlet, namely, a chamfer is arranged at the joint of the expiration outlet short pipe 6 and the expiration one-way valve 7. The wall thickness of the mouth part is less than 0.2mm, namely the wall thickness of the connection part of the expiration outlet short pipe 6 and the expiration one-way valve 7 is less than 0.2 mm. The lower elbow is connected with the tail part of the breathing conduit 5 in interference fit.
The filter bag 8 is a flat structure and has high-efficiency filtering level, is made of melt-blown filter material or pure cotton filter material, and is provided with a filter bag mouthpiece 18 in the cavity, so that enough fresh air can be sucked during air suction, and more than 99% of air can be filtered. The volume of the filter bag 8 is more than 20 ml.
As shown in fig. 5, the filter bag 8 is communicated with the filter bag mouth-piece 18, one end of the filter bag mouth-piece 18 is arranged in the filter bag 8 and is connected with the side wall of one side of the filter bag 8, the other end of the filter bag mouth-piece 18 passes through the other side of the filter bag 8 to be communicated with the soft suction connecting pipe 9, and an air inlet is arranged in the middle of the filter bag mouth-piece 18 and is arranged in the filter bag 8. The filter bag mouth-piece 18 is connected with the air suction soft connecting pipe 9 through a valve box 17, the other end of the filter bag mouth-piece 18 is arranged in the valve box 17, and the other end of the filter bag mouth-piece 18 is provided with an air suction one-way valve 16 which can be closed or opened; the air suction check valve 16 is arranged in the valve box 17.
The inspiration check valve 16 and the expiration check valve 7 are plastic film check valves which are formed by combining a hard plastic film sheet and a flexible plastic film sheet, have small mass and small opening resistance, and can be opened or closed immediately through normal expiration and inspiration of people. The mass of the inspiration one-way valve 16 and the expiration one-way valve 7 is less than 0.3 g.
The exhaust box 10 is a rectangular semi-slope body, is made of plastic sheets and is provided with a box cover, an expiration one-way valve 7 and an expiration outlet short pipe 6 are arranged in the box, the expiration one-way valve 7 is positioned at the upper end of the expiration outlet short pipe 6, and a communication hole of a breathing conduit 5 and an assembly hole corresponding to the exterior filter cover 1 are arranged on the bottom surface of the box. The box cover is provided with a mounting seat of an exhaust filter sheet 11.
An exhaust filter 11, a middle-effect filter stage, is made of melt-blown filter material or pure cotton filter material and is installed on the exhaust box 10.
And the air suction one-way valve 16 is arranged in the valve box 17 and leans against the outlet side of the filter bag mouthpiece 18 to form a closed state. One end of the valve box 17 is connected with the filter bag mouthpiece 18, and the other end is connected with the air suction soft connecting pipe 9; the valve box 17 is provided therein with a valve seat member fixed above the suction check valve 16, and the suction check valve 16 is vertically suspended from the valve seat member.
The filter bag mouth-piece 18 is made of plastic and is not only an inner cavity bracket of the filter bag 8 but also an air outlet, an air inlet hole is arranged on the tube wall in the inner cavity of the filter bag mouth-piece 18, and air flows to the outlet of the filter bag mouth-piece 18 through the air inlet hole and then flows to the air suction one-way valve 16 when air is sucked.
The heat exchange ring 12 is made of metal material (copper or stainless steel) and is in a spiral spring shape (or sheet shape), the heat exchange area of the heat exchange ring is larger than 0.0012 square meter, and the temperature of the sucked air can be increased when the heat exchange ring is used in winter. The heat exchange principle is as follows: according to the second principle of thermodynamics (steady-state heat conduction, heat and mass transfer due to phase change).
The silica gel joint 3, the zigzag connecting pipe 4, the breathing conduit 5, the expiration outlet short pipe 6, the expiration one-way valve 7, the filter bag 8, the inspiration soft connecting pipe 9, the exhaust box 10, the exhaust filter plate 11, the heat exchange ring 12, the inspiration inlet short pipe 15, the inspiration one-way valve 16, the valve box 17 and the filter bag mouthpiece 18 are all two and are symmetrically arranged.
The utility model discloses breathe through the subchannel, divide the passageway, mean can be divided into breathing passageway and inspiratory channel and circulate respectively breathing in. The expiration channel is formed by connecting gas from the nasal cavity to the silica gel joint 3, the folded connecting pipe 4, the breathing conduit 5, the expiration outlet short pipe 6, the expiration one-way valve 7, the exhaust box 10 and the exhaust filter sheet 11 to the atmosphere during expiration; the air suction channel refers to a cavity from the exterior filter cover 1 to the middle of the exterior filter cover, a filter bag 8, an air suction one-way valve 16, an air suction soft connecting pipe 9, an air suction inlet short pipe 15, a breathing conduit 5, a folded connecting pipe 4 and a silica gel joint 3 to the nasal cavity when air is sucked.
The utility model discloses a using-way is similar with the wearing mode of current gauze mask commonly used, connects 3 and nostril butt joints to two silica gel earlier, hangs frenulum 14 on both sides ear again, and the soft cramp 13 straining of 1 top of outer decoration filter mantle is on the bridge of the nose, accomplishes and wears. When two silica gel joints 3 and nostril butt joint, the horn-shaped structure is located in the nostril, and the outer wall of lantern-shaped structure and nostril sealing contact.
The utility model discloses when using, exhale and breathe in and divide the passageway circulation, specific working process as follows:
when the nostril exhales, the silica gel joint 3, the folded connecting pipe 4, the breathing pipe 5, the expiration outlet short pipe 6 and the inspiration soft connecting pipe 9 form positive pressure, the expiration check valve 7 is opened immediately, the inspiration check valve 16 is closed immediately, and gas is exhausted to the atmosphere through the silica gel joint 3, the folded connecting pipe 4, the breathing pipe 5, the expiration outlet short pipe 6 to the exhaust box 10 and the exhaust filter 11 in sequence to complete the expiration process.
When the nostril inhales, the silica gel joint 3, the fold-shaped connecting pipe 4, the breathing conduit 5, the expiration outlet short pipe 6 and the inspiration soft connecting pipe 9 form negative pressure, the expiration one-way valve 7 is closed immediately, the inspiration one-way valve 16 is opened immediately, the negative pressure is formed in the filter bag 8, air passes through the exterior filter cover 1 and enters the filter bag 8, the inspiration one-way valve 16, the inspiration soft connecting pipe 9, the inspiration inlet short pipe 15, the breathing conduit 5, the fold-shaped connecting pipe 4 and the silica gel joint 3 to the nostril through a cavity between the exterior filter cover 1 and the face, and the inspiration process is finished. The above processes are circularly implemented, and the work process of the nostril exhaling and inhaling again can be completed.
The utility model discloses having add filter bag 8 in the 1 inboard of exterior trim filter mantle, owing to inhale gaseous through filter bag 8, breathe in soft takeover 9, breathe in inlet nozzle stub 15 and get into respiratory duct 5, ensure respiratory duct 5, silica gel connects 3 gaseous more than 99% that get into human nasal cavity to filter through filter bag 8. Under special conditions, such as fire, toxic and harmful gas environments, the filter bag 8 can also be filtered in a wet state, so that the filter efficiency is higher and the purification effect is better. The utility model discloses well filter bag 8 adopts the soft takeover 9 of breathing in and breathes in pipe 5 and is connected with the import nozzle stub 15 of breathing in, has easy dismounting, the easy advantage of changing.
The utility model discloses be equipped with exhaust filter 11 in box cover side of exhaust box 10, exhaust filter 11 can be conveniently changed.
For being suitable for winter use, the utility model discloses be provided with the heat transfer circle 12 of rising temperature usefulness in breathing pipe 5, when the external temperature in winter is less than 5 ℃, heat transfer circle 12 in the breathing pipe 5 can be automatic stores the heat energy in the exhalation gas to release in the inhalation gas, make the temperature of inhaling in the nasal cavity more comfortable.
The utility model is suitable for the requirements of special posts, especially the infectious disease control area of hospitals except the use under the high pollution environment.
When some sulfur dioxide and nitrogen dioxide in the external atmosphere are higher, the filter bag 8 made of cotton or paper is adopted, and water is sprayed for humidification, so that the inhaled air can be effectively purified.
When the outside atmosphere contains high carbon dioxide, active carbon can be added into the filter bag 8 to effectively purify the sucked air.
When the external atmosphere contains viruses which are easy to infect, the external decoration filter cover 1, the filter bag 8 and the exhaust filter sheet 11 of the utility model can be directionally sterilized, so that the cross infection of the viruses can be more effectively prevented.
Example 2
In this embodiment, the provision of the suction check valve 16 is eliminated. Because the filter bag 8 is used, the filter bag 8 is of a flat structure and has high-efficiency filter level, is made of melt-blown filter materials or pure cotton filter materials, and is provided with a bag port, enough fresh air can be sucked during air suction, and more than 99% of air can be filtered. According to the national standard GB/T32610-2016 of the mask, the inspiration resistance is less than 175Pa, the expiration resistance is less than 145Pa, the opening resistance (less than 10Pa) of the expiration check valve is far greater than, according to the classic theory of fluid mechanics- (Bernoulli equation), the mask is popularized to the condition of shunting or converging along the way, and the conclusion can be drawn according to the general mechanical energy conservation principle- (Bernoulli equation): because the normal positive expiratory pressure of the human body is less than 50Pa, the expired air can not be discharged from the filter bag 8. Thus, when breathing out, the gas will only go out of the expiration check valve 7 and not into the filter bag 8; on inhalation, the exhalation check valve 7 automatically closes and only filtered air can be inhaled from the filter bag 8.
The principle is as follows:
when breathing out, the resistance of the gas to the filter bag 8 is greater than the resistance of the gas to the exhalation check valve 7 so that the gas will only exit the exhalation check valve 7 and not enter the filter bag 8.
When inhaling, because the expiratory check valve 7 is open from the inside to the outside, the negative pressure generated by the breathing conduit 5 during inhalation causes the expiratory check valve 7 to be firmly attached to the end of the expiratory outlet stub 6, so that it can only absorb gas from the filter bag 8. The gas pressure within the filter bag 8 is less than the atmospheric pressure of the ambient air which will be compressed into the filter bag 8 by the atmospheric pressure. Thereby replenishing the consumed air and meeting the requirement of air suction.
The rest is the same as in example 1.
Example 3
In this embodiment, the replacement hot coil 12 can be eliminated when the ambient temperature is above 15 ℃ according to actual needs. The rest is the same as in example 1.
Example 4
In this embodiment, the exhaust filter 11 may be eliminated when the cross infection of viruses in the working environment does not exceed the hygienic protection standard according to actual needs. The rest is the same as in example 1.

Claims (10)

1. A mask for filtering and purifying air by a filter bag commonly used for expiration and inspiration branch channel flow is characterized by comprising a breathing conduit (5), a folded connecting pipe (4), a silica gel joint (3), a support (2), an exterior trim filter cover (1), an expiration outlet short pipe (6), an expiration one-way valve (7), an exhaust box (10), an inspiration inlet short pipe (15), an inspiration soft connecting pipe (9), a filter bag (8) and a frenum (14), wherein the head of the breathing conduit (5) is connected with the lower end of the folded connecting pipe (4), the upper end of the folded connecting pipe (4) is connected with the lower end of the silica gel joint (3), the folded connecting pipe (4) is arranged on the exterior trim filter cover (1) through the support (2), the tail of the breathing conduit (5) is connected with the lower end of the expiration outlet short pipe (6), the upper end of the expiration outlet short pipe (6) is provided with the expiration one-way, the exhalation outlet short pipe (6) and the exhalation one-way valve (7) are both arranged in the exhaust box (10), the middle position of the breathing conduit (5) is provided with an inhalation inlet short pipe (15) communicated with the breathing conduit (5), the inhalation inlet short pipe (15) is connected with an inhalation flexible connecting pipe (9), one end of the inhalation flexible connecting pipe (9) is communicated with the filter bag (8), and both sides of the exterior trim filter cover (1) are provided with tying belts (14); the outer decorative filter cover (1) is of an inwards concave arc-shaped structure; the bracket (2) and the exhaust box (10) are fixed on the exterior filter cover (1).
2. A mask for filtering and purifying air with a filter bag for both exhalation and inhalation bypass flow as claimed in claim 1, wherein the top of said exterior filter (1) is provided with a soft buckle (13) for making the exterior filter (1) close to the nose bridge.
3. The mask for filtering and purifying air by using the filter bag for the branch flow of the exhalation and the inhalation as claimed in claim 1, wherein the joint of the folded connecting pipe (4) and the support (2) is vertically arranged, the upper end of the folded connecting pipe (4) is bent inwards, and the bent part of the folded connecting pipe (4) is arranged above the support (2).
4. A respirator for filtering purified air with a filter bag for both exhalation and inhalation bypass flow as claimed in claim 1, wherein said filter bag (8) is of a flat-bodied configuration.
5. The mask for filtering and purifying air by using the filter bag for the common sub-channel flow of expiration and inspiration as claimed in claim 1, wherein the support (2) is provided with two tube seat holes, and the two tube seat holes are respectively connected with the two folded connecting tubes (4) in an interference fit manner; the folded connecting pipe (4) can axially rotate along the lower end of the folded connecting pipe (4) in the pipe seat hole.
6. The mask for filtering and purifying air by using the filter bag for the branch flow of the exhalation and the inhalation as claimed in claim 1, wherein the upper end of the silica gel joint (3) is of a bell mouth structure, the lower end of the silica gel joint (3) is of a straight tube structure, the middle part of the silica gel joint (3) is of a lantern structure, and the upper end and the lower end of the lantern structure are respectively connected with the small mouth end of the bell mouth structure and one end of the straight tube structure; the upper end and the lower end of the lantern structure are both circular planes, and the left side and the right side of the longitudinal section of the lantern structure are both circular arcs.
7. The mask for filtering and purifying air by using the filter bag for the common sub-channel flow of the exhalation and the inhalation as claimed in claim 1, wherein the filter bag (8) is communicated with the filter bag mouth piece (18), one end of the filter bag mouth piece (18) is arranged in the filter bag (8) and is connected with the side wall of one side of the filter bag (8), the other end of the filter bag mouth piece (18) passes through the other side of the filter bag (8) to be communicated with the inhalation soft connecting pipe (9), and an air inlet is arranged in the middle of the filter bag mouth piece (18) and is arranged in the filter bag (8).
8. The mask for filtering and purifying air by the filter bag for the common sub-channel flow of expiration and inspiration as claimed in claim 7, characterized in that the filter bag mouth piece (18) is connected with the inspiration soft connecting tube (9) through a valve box (17), and the other end of the filter bag mouth piece (18) is arranged in the valve box (17); an air suction one-way valve (16) and a valve seat element are arranged in the valve box (17), the air suction one-way valve (16) leans against the outlet side of the filter bag mouthpiece (18), the valve seat element is fixed above the air suction one-way valve (16), and the air suction one-way valve (16) is vertically hung on the valve seat element; the inspiration one-way valve (16) and the expiration one-way valve (7) are both formed by combining a rigid diaphragm and a flexible diaphragm; the air suction one-way valve (16), the valve box (17) and the filter bag mouthpiece (18) are all two and are symmetrically arranged.
9. A respirator for filtering and purifying air with a filter bag for both expiratory and inspiratory sub-channel flows according to claim 1, characterized in that the outlet of the expiratory outlet stub pipe (6) is vertically arranged upwards; a chamfer is arranged at the joint of the expiration outlet short pipe (6) and the expiration one-way valve (7).
10. A mask for filtering and purifying air with a filter bag for both exhalation and inhalation sub-channel flow as claimed in claim 1, wherein said exhaust box (10) is provided with an exhaust filter (11); a heat exchange ring (12) is arranged at the joint of the breathing conduit (5) and the short pipe (15) of the inspiration inlet; the silica gel joint (3), the fold-shaped connecting pipe (4), the breathing conduit (5), the expiration outlet short pipe (6), the expiration check valve (7), the filter bag (8), the inspiration soft connecting pipe (9), the exhaust box (10), the exhaust filter sheet (11), the heat exchange ring (12) and the inspiration inlet short pipe (15) are respectively two and symmetrically arranged.
CN201921819637.8U 2019-10-28 2019-10-28 Breathing and breathing branch channel flow general mask for filtering and purifying air by filter bag Active CN211301824U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921819637.8U CN211301824U (en) 2019-10-28 2019-10-28 Breathing and breathing branch channel flow general mask for filtering and purifying air by filter bag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921819637.8U CN211301824U (en) 2019-10-28 2019-10-28 Breathing and breathing branch channel flow general mask for filtering and purifying air by filter bag

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CN211301824U true CN211301824U (en) 2020-08-21

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112704825A (en) * 2020-12-30 2021-04-27 上海睿正环保科技发展有限公司 Oral method for separately treating expiration and inspiration and breathing sub-channel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112704825A (en) * 2020-12-30 2021-04-27 上海睿正环保科技发展有限公司 Oral method for separately treating expiration and inspiration and breathing sub-channel
WO2022143600A1 (en) * 2020-12-30 2022-07-07 上海睿正环保科技发展有限公司 Method for separately disposing exhaled air and inhaled air, and respiratory branch channels

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