CN212347490U - Sub-channel breathing filter capable of preventing countercurrent - Google Patents
Sub-channel breathing filter capable of preventing countercurrent Download PDFInfo
- Publication number
- CN212347490U CN212347490U CN202020563237.1U CN202020563237U CN212347490U CN 212347490 U CN212347490 U CN 212347490U CN 202020563237 U CN202020563237 U CN 202020563237U CN 212347490 U CN212347490 U CN 212347490U
- Authority
- CN
- China
- Prior art keywords
- breathing
- filter
- cavity
- expiration
- exhaust
- 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.)
- Active
Links
Images
Abstract
The utility model discloses a sub-channel breathing filter capable of preventing counter-flow, which adopts a plurality of high-tech methods, and is provided with an expiration channel and an inspiration channel respectively in the sub-channel breathing filter, and realizes the circulation of the expiration and inspiration sub-channel by utilizing the expiration positive pressure and the inspiration negative pressure generated during respiration, and can discharge the expiration quickly and filter the inspiration gas efficiently; aiming at the characteristic that the exhalation and the inhalation are continuously and alternately carried out, a plane filter is adopted for filtering, and the filtering is primary filtering; the combination of the plane filter plate and the filter bag is adopted for filtering, and the filtering is a secondary filtering, so that higher filtering efficiency can be obtained; aiming at the characteristics of high expiration temperature and low inspiration temperature, the heat exchange sheet is arranged, so that the heat exchange sheet can store heat energy during expiration and release the heat energy into gas during inspiration, and the inspiration comfort can be greatly improved; aiming at the characteristic that the exhalation and the inhalation are continuously and alternately carried out, the countercurrent-preventing exhaust kettle is arranged in the exhalation channel, so that the countercurrent is not generated.
Description
Technical Field
The utility model relates to a sub-channel respiratory filter capable of preventing countercurrent, which belongs to the technical field of health care.
Background
In the place that air pollution is serious, in the region that bacterium, virus exist in a large number, often need to wear the gauze mask, especially to nurse and doctor that are closest to infectious victim all need wear the gauze mask that filtration efficiency is high and the protective effect is good, present gauze mask or protective articles have about following several: general gauze mask, gauze mask with expiratory valve, subchannel nose breathing filter mantle (do not have the product).
The universal mask has the advantages that the universal mask can play a certain role in filtering and isolating pollutants, bacteria, viruses and the like in the air; the disadvantages are that the foul air exhaled during breathing can not be discharged in time, secondary inhalation can be formed, the fresh air is insufficiently inhaled, and serious anoxic breathing can be formed; can not form good seal with the face of a person, can produce side leakage and reduce the protection effect.
The mask with the exhalation valve has the advantages that the mask can play a certain role in filtering and isolating pollutants, bacteria, viruses and the like in the air, and a small part of foul breath exhaled during breathing can be discharged in time; the disadvantages are that the foul air exhaled during breathing can not be discharged in large quantity, secondary inhalation can be formed, the fresh air is insufficiently inhaled, and heavy anoxic breathing can be formed; viral inhalation may result because the exhalation valve is sometimes not tightly closed during inhalation; can not form good seal with the face of a person, can produce side leakage and reduce the protection effect.
The sub-channel nasal breathing filter mask has the advantages that the sub-channel technology is provided, and the possibility of improving the ventilation efficiency of expiration and inspiration is provided. The defect is that the overall design is incomplete, and the product development condition is not available for further research.
Characteristics of the human respiratory system and related data:
1, the main respiratory organs of human body are nose, pharynx, larynx, trachea, bronchus and lung. The nose is the main passage for the human body to breathe outwards.
The physiological function of human breathing includes two functions, one is to exhaust the foul air in the body during exhalation, and the other is to capture the oxygen from the inhaled air during inhalation.
3, the main physical parameters of human respiration, that is, 20 to 25 breaths per minute by an adult, the air volume of each breath is about 300 to 800 ml, and the temperature of the human body is about 37 ℃. When a human body breathes normally, the positive pressure of expiration is about 10-100 Pa, the negative pressure of inspiration is about 12-120 Pa, and the oxygen content in the inhaled air can be consumed by 4 percent of one breath of the human body.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: the problems that the breathing filter is difficult to discharge expired air, the inspired air is not fresh, side leakage is easy to generate and the overall design is incomplete are solved.
In order to solve the technical problem, the technical scheme of the utility model is to provide a sub-channel breathing filter capable of preventing countercurrent, which comprises an outer mask, a silica gel joint, a folded connecting pipe, a breathing shunting cavity, a cushion ring bracket, a plane filter sheet, a filter sheet support, a pressing sheet, a sealing gasket, a breathing shunting cavity cover, a filter bag inner bracket, an elastic belt, an expiration check valve, a breathing valve seat, an anti-countercurrent exhaust kettle, an exhaust box, an exhaust filter sheet, a heat exchange sheet bracket, a filter sheet buckle sheet and a lacing;
the sub-channel breathing filter can divide human breathing into an expiration channel and an inspiration sub-channel to be respectively circulated, and is generally designed according to a plurality of characteristics of human breathing, and the specific content is as follows:
according to the technical measures corresponding to the breathing characteristics
The nasal respiratory sub-channel system is designed according to the fact that the nose is a main channel for human body respiration, and the sub-channel divides respiration into an expiration channel and an inspiration channel which are communicated respectively through a pipeline and related components.
Two tasks to be performed according to the respiration of the human body are to discharge the foul air (mainly carbon dioxide) in the body through expiration, and to extract oxygen from the inhaled air into the blood through inspiration to provide the oxygen to various organs of the human body. When inhaling, it can capture about 4% of oxygen content in air. The oxygen content in the air is 21-18% of the normal interval, 18-15% of the oxygen-deficient interval and less than 15% of the dangerous interval. The design of the sub-channels is adopted, so that the turbid air can be completely discharged during expiration, and sufficient oxygen is available during inspiration.
3, according to the positive pressure generated by expiration when a human body breathes, the negative pressure generated by inspiration, the expiration and inspiration are continuously and alternately carried out, an expiration one-way valve can be arranged on the expiration channel, and the expiration one-way valve is automatically opened to discharge the foul smell when the human body breathes out; when breathing in, the exhalation one-way valve is automatically closed, the switching between the exhalation channel and the inhalation channel is realized, and 100 percent of inhaled air is ensured to enter the nasal cavity after being filtered.
4, according to the breathing of human body, the positive pressure generated by the breathing is very small, the thin-film expiratory one-way valve is adopted, the mass of the expiratory one-way valve is very small, the opening resistance is very small, according to the law of universal gravitation Newton of scientists, the expiratory one-way valve is designed to move in the vertical direction, the expiratory one-way valve can be easily opened by the positive pressure of gas during the breathing, and the expiratory one-way valve can be closed by the universal gravitation and the negative pressure of breathing during the breathing. And the expiration one-way valve can be synchronous with the breathing of the human body, and can ensure that the expiration one-way valve works normally in normal activities of people.
5, according to the breathing of a human body, the nostrils are provided with double holes for breathing gas downwards, a sub-channel breathing filter with a breathing flow dividing cavity as a structural main body is designed, and a flow dividing groove is arranged in the breathing flow dividing cavity and can divide the breathing into an breathing channel and an inhaling channel; the exhalation channel is in turn from the nasal cavity, the silica gel joint, the fold-shaped connecting pipe, the respiratory shunt cavity (shunt slot), the anti-reflux exhaust pot, the exhalation one-way valve, the exhaust box and the exhaust filter plate to the atmosphere; the air suction channel comprises a nasal cavity, a silica gel joint, a folded connecting pipe, a breathing shunting cavity (shunting groove), a plane filter plate, a breathing shunting cavity cover or a filter bag to atmosphere according to the sequence.
According to Bernoulli hydromechanics theory, because the total resistance of the pipeline of the exhalation channel is far smaller than that of the inhalation channel (the opening resistance of the exhalation one-way valve is far smaller than that of the planar filter), the exhaled air cannot be discharged from the inhalation channel during exhalation.
6, according to the characteristics of human breathing, the breathing and the inspiration are continuously and alternately carried out, the primary or secondary filtration of the combination of the plane filter plate and the filter bag is designed, and the primary filtration can be adopted for preventing air pollution generally; when people work in a virus environment and the sub-channel breathing filter is required to have extremely high filtering efficiency and protective effect, secondary filtering can be adopted. The planar filter is arranged in the breathing shunt cavity, so that primary filtration can be realized; and increase and cross the filter bag, set up the filter bag outside breathing the reposition of redundant personnel cavity, filter area is unrestricted, and the filter bag is crossed to the filter cloth preparation that available filtration efficiency is higher, still can set up great full volume between crossing the filter bag and the plane filter plate, utilizes exhaling and inhales the time difference that carries out the production in succession in turn, inhales and obtains the compensation, realizes the secondary filter, can greatly improve branch passageway breathing filter's filtration efficiency, improves the protection to medical staff.
7, according to the characteristics of human breathing, the breathing and the inspiration are continuously and alternately carried out, and the heat exchange plate is designed, so that when the ambient temperature is low, such as in winter, the temperature of the inhaled air is low during breathing, and discomfort or frostbite can be caused. According to the Fourier heat transfer theory, the heat exchange plate is designed, the heat exchange plate stores the heat energy in the exhaled air during exhalation and releases the heat energy into the inhaled air during inhalation, so that the temperature of the inhaled air can be increased, and the inhalation is comfortable.
8, according to the characteristics of the human body during breathing, the exhalation and the inhalation are continuously and alternately carried out, and the backflow-preventing exhaust pot is arranged in front of the outlet of the exhalation channel, so that the backflow is not generated when the exhalation is converted into the inhalation.
The utility model designs the sub-channel breathing filter into a bilaterally symmetrical retroversion angle and a long bow-shaped structure according to the breathing characteristics of the human body and the corresponding technical measures and by combining the shape of the face of the human body, the breathing shunt cavity is a main structure body and is arranged in the middle to be bilaterally symmetrical, and the breathing interface short pipe is symmetrically arranged in the middle of the upper end of the breathing shunt cavity and is connected with the silica gel joint through the zigzag connecting pipe; the breathing ports at the left and right ends of the inner side in the breathing shunt cavity are respectively connected with one ends of two anti-countercurrent exhaust kettles, the other end of each anti-countercurrent exhaust kettle is respectively arranged in an exhaust box, an exhaust filter disc is arranged on the exhaust box, and an expiration one-way valve is arranged at the port of the other end of each anti-countercurrent exhaust kettle; the outer side in the breathing shunt cavity is provided with a plane filter plate, and the inner side in the breathing shunt cavity is provided with a heat exchange plate; a cushion ring is arranged at the rear side of the respiratory shunt cavity; two ends of the respiratory shunt cavity are respectively provided with two lacings.
Preferably, the heat exchange plate is fixed in the breathing shunt cavity through a heat exchange plate bracket; the plane filter is fixed in the breathing shunt cavity through a plane filter support; the cushion ring is fixed at the rear side of the respiratory shunt cavity through a cushion ring bracket; the expiration check valve is fixed in the exhaust box through the breather valve seat and is arranged on the air outlet port of the anti-reflux exhaust kettle.
Preferably, the inner side of the respiratory shunt cavity is provided with a deep groove, the outer side of the respiratory shunt cavity is provided with a shallow groove, the deep groove is arranged on the inner side of the shallow groove, the deep groove is a shunt groove, and the shallow groove is a filter mounting groove; two breathing short connecting pipes are symmetrically arranged in the middle of the top surface of the deep groove and are connected with the lower ends of the folded connecting pipes, short expiration outlet pipes are symmetrically arranged at the expiration ports at the left side end and the right side end of the deep groove, and the short expiration outlet pipes are connected with one end of the anti-backflow exhaust kettle; the heat exchange fins and the heat exchange fin bracket are arranged in the deep groove; the shallow groove is internally provided with a plane filter support and a plane filter, and the outer side of the shallow groove is provided with a breathing shunting cavity cover. Two extending plates are symmetrically arranged at two side ends of the bottom surface of the respiratory shunt cavity and used for installing an exhaust box and a lacing.
Preferably, the respiratory shunt cavity is in a long arch shape with a back inclination angle; the respiratory shunt cavity is made of plastic.
Preferably, the cavity in the backflow-preventing exhaust kettle is vertically upward; the lower side surface of the anti-reflux exhaust kettle is provided with an inlet short tube, the upper end surface of the anti-reflux exhaust kettle is provided with an outlet short tube, the outlet of the outlet short tube is provided with a chamfer, the inlet short tube is inserted in the outer side of the expiration outlet short tube and is in interference fit with the expiration outlet short tube, and the expiration outlet short tube protrudes into the cavity of the anti-reflux exhaust kettle.
Preferably, the planar filter is fixed on the planar filter support through a pressing sheet, the respiratory shunt cavity cover is hermetically connected with a shallow groove of the respiratory shunt cavity through a sealing gasket, and the pressing sheet is arranged in the shallow groove; a locking component is correspondingly arranged between the breathing shunt cavity cover and the breathing shunt cavity.
Preferably, a filter bag interface is arranged on the outer side of the breathing shunt cavity cover, and a filter bag communicated with the filter bag interface is arranged on the outer side of the breathing shunt cavity cover; the filter bag is internally provided with a filter bag inner support.
Preferably, the filter bag is made of melt-blown non-woven fabric or fine-pore fiber cloth; the outer side of the filter bag is a polluted surface, and the inner side of the filter bag is a clean surface; the bag connecting port of the filter bag is tightly connected with the breathing shunt cavity cover through an elastic belt buckle.
Preferably, the expiration check valve is formed by combining a hard diaphragm and a flexible diaphragm; the hard diaphragm is arranged on an outlet pipe of the anti-reflux exhaust kettle.
Preferably, the outer side of the respiratory shunt cavity is provided with an outer mask, and two tying belts are respectively arranged at two side ends of the outer mask.
Preferably, the fold-shaped connecting pipe is made of high polymer plastics, the lower part of the fold-shaped pipe is a straight pipe, and the upper part of the fold-shaped pipe is a folded pipe.
The utility model relates to a branch passageway respiratory filter that can prevent against current can divide into one-level or second grade filtration, adopts multinomial high-tech method, has realized the filterable purpose of branch passageway breathing. The sub-channel breathing filter is respectively provided with an expiration channel and an inspiration channel, the expiration positive pressure and the inspiration negative pressure generated in breathing are utilized to realize the circulation of the expiration and inspiration sub-channels, the expiration can be quickly discharged, and the inhaled gas is efficiently filtered; aiming at the characteristic that the exhalation and the inhalation are continuously and alternately carried out, a plane filter is adopted for filtering, and the filtering is primary filtering; the combination of the plane filter plate and the filter bag is adopted for filtering, and the filtering is a secondary filtering, so that higher filtering efficiency can be obtained; aiming at the characteristics of high expiration temperature and low inspiration temperature, the heat exchange sheet is arranged, so that the heat exchange sheet can store heat energy during expiration and release the heat energy into gas during inspiration, and the inspiration comfort can be greatly improved; aiming at the characteristic that the exhalation and the inhalation are continuously and alternately carried out, the countercurrent-preventing exhaust kettle is arranged in the exhalation channel, so that the countercurrent is not generated.
Drawings
FIG. 1 is a front view of a bypass respiratory filter that is resistant to reverse flow;
FIG. 2 is a top view of FIG. 1;
fig. 3 is a cross-sectional view of fig. 1.
Detailed Description
In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
The utility model relates to a branch passageway respiratory filter that can prevent adverse current, as shown in fig. 1-fig. 3, it is including outer mask 1, silica gel joint 2, book shape connecting pipe 3, breathe reposition of redundant personnel cavity 4, cushion ring 5, cushion ring support 6, plane filter plate 7, plane filter plate support 8, preforming 9, sealed pad 10, breathe reposition of redundant personnel cavity lid 11, cross filter bag 12, cross filter bag inner support 13, elastic band 14, expiration check valve 15, breather valve seat 16, prevent exhaust kettle 17 against the current, exhaust box 18, exhaust filter plate 19, the filter plate cramp, heat exchanger fin 20, heat exchanger fin support 21, frenulum.
The sub-channel breathing filter is of a bilaterally symmetrical structure, a breathing shunt cavity 4 is arranged in the middle, the upper end of the breathing shunt cavity 4 is connected with two silica gel joints 2 through folded connecting pipes 3 respectively, the exhalation ports at the left and right ends of a shunt slot in the breathing shunt cavity 4 are connected with one ends of two anti-reflux exhaust kettles 17 respectively, the other end of each anti-reflux exhaust kettle 17 is arranged in an exhaust box 18 respectively, the side surface of the exhaust box 18 is provided with an exhaust filter plate 19, and the pipe orifice at the upper end of the anti-reflux exhaust kettle 17 is provided with an exhalation one-way valve 15; the critical surface of the outer side and the deep groove in the respiratory flow-dividing cavity 4 is an inspiration inlet, and the outer side of the flow-dividing groove of the respiratory flow-dividing cavity 4 is provided with a plane filter plate 7 and a respiratory flow-dividing cavity cover 11. The respiratory shunt cavity cover 11 is provided with two clocks, one is provided with no filter bag interface on the outer side surface and is used for primary filtration; the other is that the lateral surface is provided with a filter bag interface for secondary filtration. Meanwhile, the filter bag 12 can be arranged on the outer side of the breathing shunt cavity cover 11 provided with the filter bag interface, and the filter bag 12 is not arranged on the outer side of the breathing shunt cavity cover 11 without the filter bag interface. The outer side of the inspiration inlet of the breath shunt cavity 4 is sequentially provided with a filter support 8, a plane filter 7, a pressing sheet 9, a sealing gasket 10 and a cavity cover 11. A heat exchange fin 20 is arranged in the flow dividing groove in the breathing flow dividing cavity 4; a cushion ring 5 is arranged at the rear side of the respiratory shunt cavity 4; two extending plates are symmetrically arranged at the bottoms of the two ends of the breathing shunting cavity 4, and an anti-reflux exhaust kettle 17 and an exhaust box 18 are arranged on the extending plates. The outer side of the breathing shunt cavity 4 is provided with an outer mask 1, and two laces are respectively arranged at the two side ends of the outer mask 1.
The heat exchange fins 20 are fixed in the deep grooves of the breathing flow-dividing cavity 4 through the heat exchange fin bracket 21; the plane filter plate 7 is fixed in the shallow groove of the breathing shunt cavity 4 through a plane filter plate support 8; the cushion ring 5 is fixed at the rear side of the respiratory shunt cavity 4 through a cushion ring bracket 6; the expiration check valve 15 is located on the air outlet port of the anti-backflow air exhausting pot 17, and the expiration check valve 15 is fixed in the air exhausting box 18 through the breathing valve seat 16.
The external mask 1 is made of silica gel, soft plastic, ultra-fine fiber cloth and the like, and the shielding range is from the upper part of an upper end beam to a nose beam, the lower part of the upper end beam to a neck and the left and right near ear edges; the respiratory shunt cavity is provided with a lace matched with the respiratory shunt cavity in shape.
The silica gel joint 2 is made of silica gel film, and adopts a structure that the upper part is a bell mouth, the middle part is a circular arc and the lower part is a straight pipe in order to achieve the sealing with nostrils.
The fold-shaped connecting pipe 3 is made of high polymer plastics, the lower part of the fold-shaped pipe is a straight pipe, the upper part of the fold-shaped pipe is a folded pipe, and the fold angle is about 5-20 degrees, so that the fold-shaped connecting pipe can play a role in guiding and adjusting the direction.
The structure of the breathing shunt cavity 4 is designed into a long bow shape in order to match the shape of the face of a human body; the respiratory shunt cavity 4 is made of high polymer plastics. The inner side of the respiratory shunt cavity 4 is provided with a deep groove, the outer side of the respiratory shunt cavity 4 is provided with a shallow groove, the deep groove is arranged at the inner side of the shallow groove, the deep groove is a shunt groove, and the shallow groove is a filter mounting groove; two breathing short connecting pipes are symmetrically arranged in the middle of the top surface of the deep groove and are connected with the lower end of the folded connecting pipe 3, two short expiration outlet pipes are symmetrically arranged at the expiration ports at the left side end and the right side end of the deep groove, and the short expiration outlet pipes are connected with one end of an anti-reflux exhaust kettle 17; the heat exchange fins 20 and the heat exchange fin bracket 21 are arranged in the deep groove; the shallow groove is internally provided with a plane filter support 8 and a plane filter 7, the outer side of the shallow groove is provided with a breathing shunting cavity cover 11, and the outer side of the breathing shunting cavity cover 11 is provided with a filter bag interface. The plane filter plate 7 is fixed on the plane filter plate support 8 through a pressing plate 9, the breath shunt cavity cover 11 is hermetically connected with the shallow groove of the breath shunt cavity 4 through a sealing gasket 10, and the pressing plate 9 is arranged in the shallow groove. Two extending plates are symmetrically arranged at two side ends of the bottom surface of the deep groove, a breathing shunt cavity cover 11 is arranged on each extending plate, and a locking part is arranged between the breathing shunt cavity 4 and the breathing shunt cavity cover 11 to ensure the internal sealing of the breathing shunt cavity 4; the breathing shunt cavity 4 is provided with a soft cushion ring bracket mounting lock catch and a lace lock catch, and the lace lock catch is provided with a lace.
The anti-reflux exhaust kettle 17 is made of high polymer plastics, the air inlet is provided with a design with small resistance in forward flow and large resistance in reverse flow, and the inner volume of the kettle is enlarged to form a small air chamber. The cavity in the anti-reflux air exhaust kettle 17 is vertically upward; the lower side surface of the anti-reflux exhaust kettle 17 is provided with an inlet short tube, the upper end surface of the anti-reflux exhaust kettle 17 is provided with an outlet short tube, the outlet of the outlet short tube is subjected to outer chamfering treatment, and the outlet is required to be smooth. Can ensure that no counter flow is generated in the process of breathing. The short air inlet pipe is inserted at the outer side of the short expiration outlet pipe and is in interference fit with the short expiration outlet pipe, and the short expiration outlet pipe protrudes into the cavity of the anti-reflux air exhaust kettle 17.
The breath shunt cavity cover 11 is made of polymer plastics and is provided with a component locked with the breath shunt cavity 4, and the middle part of the breath shunt cavity cover is provided with an external interface short pipe which can be connected with the filter bag 12.
The filter bag 12 is made of melt-blown non-woven fabrics, fine-pore fiber cloth or superfine-pore filter materials and the like, is designed into a T-shaped structure by matching with the shape of the breathing shunting cavity 4, the outer side of the filter bag 12 is a polluted surface, and the inner side of the filter bag 12 is a clean surface. The bag connecting port is arranged below the T-shaped structure, and the bag connecting port of the filter bag 12 is sleeved with an external short pipe on the breathing shunting cavity cover 11 and fastened by an elastic band 14. The filter bag 12 is internally provided with a filter bag inner support 13.
The heat exchange plate 20 is made of a stainless steel sheet, is fixed on the heat exchange plate support 21 and is installed in the flow dividing groove of the breathing flow dividing cavity 4, so that heat energy in exhaled air can be stored when the breath is exhaled, and the heat energy is released into inhaled air when the breath is inhaled, so that the temperature of the inhaled air can be increased, and the breath is more comfortable.
The exhaust box 18 is made of polymer plastics, one surface of the exhaust box is provided with a grid type exhaust port, an exhaust filter 19 can be installed, and the exhaust box 18 is installed on an extension plate of the respiratory shunt cavity 4, so that the expiratory side pressure can be slowly reduced, and the counter flow can be prevented.
The exhaust filter 19 is made of melt-blown non-woven fabric or superfine pore filter material, and can filter the expired air to prevent cross infection.
The cushion ring 5 is made of high polymer soft plastic, silica gel and the like.
The cushion ring support 6 is made of polymer plastics and can be arranged at the rear side of the breathing shunt cavity.
The gasket 10 is an O-ring seal.
The heat exchanger plate support 21 is made of plastic.
The working process of the utility model is as follows:
when the nasal cavity exhales, positive pressure is generated in the nasal cavity, and the air passes through the silica gel joint 2, the folded connecting pipe 3, the respiratory shunt cavity 4, the anti-reflux exhaust pot 17, the exhalation one-way valve 15, the exhaust box 18 and the exhaust filter plate 19 from the nasal cavity to the atmosphere; when breathing in, negative pressure is generated in the nasal cavity, negative pressure is generated in the breathing shunt cavity 4 and the filter bag 12, and fresh air is filtered to the inner side of the filter bag 12, the plane filter plate 7, the breathing shunt cavity 4, the folded connecting pipe 3, the silica gel joint 2 and the nasal cavity from the outer side of the filter bag 12 in sequence. This is repeated, and the breathing can be smoothly performed.
The utility model designs the main structure of the sub-channel breathing filter, namely the breathing shunt cavity, into a back inclination angle and a long bow shape according to the characteristics of the human face shape, thereby realizing the ingenious matching with the face shape; can achieve the purposes of safety, high efficiency, beauty and practicability.
The utility model discloses a major structure and outer mask etc. can use for a long time, only the cassette can be changed at any time with crossing the filter bag, can greatly practice thrift use cost.
The utility model discloses can be according to the operation requirement, make the cassette and cross the filter bag with different materials, can carry out purification treatment to the inhaled gas.
Claims (10)
1. The anti-backflow sub-channel breathing filter is characterized by being of a bilateral symmetry structure and comprising a breathing flow-dividing cavity (4) arranged in the middle, the upper end of the breathing flow-dividing cavity (4) is connected with two silica gel joints (2) through a folded connecting pipe (3) respectively, the breathing ports at the left end and the right end of the inner side in the breathing flow-dividing cavity (4) are connected with one ends of two anti-backflow exhaust kettles (17) respectively, the other end of each anti-backflow exhaust kettle (17) is arranged in an exhaust box (18) respectively, an exhaust filter sheet (19) is arranged on the exhaust box (18), and an expiration one-way valve (15) is arranged at the port of the other end of each anti-backflow exhaust kettle (17); the outer sides of air suction ports at the left end and the right end of the outer side in the respiratory shunt cavity (4) are provided with a plane filter (7); the inner side of the respiratory shunt cavity (4) is provided with a heat exchange sheet (20); a cushion ring (5) is arranged at the rear side of the respiratory shunt cavity (4); two ends of the respiratory shunt cavity (4) are respectively provided with two lacings.
2. The anti-backflow subchannel breathing filter of claim 1, characterized in that said plate (20) is fixed inside the breathing diversion chamber (4) by means of a plate holder (21); the plane filter (7) is fixed in the breathing shunt cavity (4) through a plane filter support (8); the cushion ring (5) is fixed at the rear side of the respiratory shunt cavity (4) through a cushion ring bracket (6); the expiration one-way valve (15) is fixed in the exhaust box (18) through a breather valve seat (16), and the expiration one-way valve (15) is arranged on an air outlet port of the backflow-preventing exhaust pot (17).
3. The anti-backflow subchannel breathing filter of claim 2, wherein the inner side of the breathing shunting cavity (4) is provided with a deep groove, the outer side of the breathing shunting cavity (4) is provided with a shallow groove, the deep groove is arranged on the inner side of the shallow groove, the deep groove is a shunting groove, and the shallow groove is a filter mounting groove; two breathing short connecting pipes are symmetrically arranged in the middle of the top surface of the deep groove and are connected with the lower end of the folded connecting pipe (3), short breathing outlet pipes are symmetrically arranged at the breathing ports at the left side end and the right side end of the deep groove, and the short breathing outlet pipes are connected with one end of an anti-reflux exhaust kettle (17); the heat exchange fins (20) and the heat exchange fin bracket (21) are arranged in the deep groove; a plane filter sheet support (8) and a plane filter sheet (7) are arranged in the shallow groove, and a breathing shunt cavity cover (11) is arranged on the outer side of the shallow groove.
4. The anti-reflux bypass breathing filter according to claim 1 or 3, wherein the breathing bypass chamber (4) is of a retrograded long arch type; the respiratory shunt cavity (4) is made of plastic.
5. An anti-reflux bypass breathing filter as claimed in claim 3, wherein the chamber in the anti-reflux venting kettle (17) is oriented vertically upwards; the lower side surface of the anti-reflux exhaust kettle (17) is provided with an inlet short tube, the upper end surface of the anti-reflux exhaust kettle (17) is provided with an outlet short tube, the outlet of the outlet short tube is provided with a chamfer, the inlet short tube is inserted in the outer side of the expiration outlet short tube and is in interference fit with the expiration outlet short tube, and the expiration outlet short tube protrudes into the cavity of the anti-reflux exhaust kettle (17).
6. The anti-backflow subchannel breathing filter of claim 3, wherein the planar filter sheet (7) is fixed on the planar filter sheet support (8) through a pressing sheet (9), the breathing shunt cavity cover (11) is hermetically connected with the shallow groove of the breathing shunt cavity (4) through a sealing gasket (10), and the pressing sheet (9) is arranged in the shallow groove; a locking component is correspondingly arranged between the respiratory shunt cavity cover (11) and the respiratory shunt cavity (4).
7. The bypass breathing filter capable of preventing backflow according to claim 3, wherein the outside of the breathing bypass cavity cover (11) is provided with a filter bag interface, and the outside of the breathing bypass cavity cover (11) is provided with a filter bag (12) communicated with the filter bag interface; an inner filter bag support (13) is arranged in the filter bag (12).
8. The anti-backflow subchannel breathing filter of claim 7, characterized in that the filter bag (12) is made of melt-blown non-woven fabric or fine-meshed fiber cloth; the outer side of the filter bag (12) is a polluted surface, and the inner side of the filter bag (12) is a clean surface; the bag connecting port of the filter bag (12) is connected with the respiratory shunt cavity cover (11) in a fastening way through an elastic band (14).
9. The anti-backflow subchannel breathing filter of claim 1, wherein said expiratory check valve (15) is formed by combining a rigid diaphragm and a flexible diaphragm; the hard diaphragm is arranged on an outlet pipe of the backflow-preventing exhaust kettle (17).
10. The anti-backflow subchannel respiratory filter of claim 1, wherein an outer mask (1) is arranged outside the respiratory flow dividing cavity (4), and two tying belts are respectively arranged at two side ends of the outer mask (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020563237.1U CN212347490U (en) | 2020-04-16 | 2020-04-16 | Sub-channel breathing filter capable of preventing countercurrent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020563237.1U CN212347490U (en) | 2020-04-16 | 2020-04-16 | Sub-channel breathing filter capable of preventing countercurrent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212347490U true CN212347490U (en) | 2021-01-15 |
Family
ID=74140405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020563237.1U Active CN212347490U (en) | 2020-04-16 | 2020-04-16 | Sub-channel breathing filter capable of preventing countercurrent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212347490U (en) |
-
2020
- 2020-04-16 CN CN202020563237.1U patent/CN212347490U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210021044U (en) | Novel breathe internal medicine vital capacity training device | |
| CN106820345A (en) | A kind of safety goggles haze mouth mask | |
| WO2022143600A1 (en) | Method for separately disposing exhaled air and inhaled air, and respiratory branch channels | |
| CN206525594U (en) | Safety goggles haze mouth mask | |
| CN112675448A (en) | Infectious disease anti-suffocating mask device for department of respiration | |
| CN111437530A (en) | Respiratory valve body structure of filter type mask for incoming and outgoing calls | |
| CN212279979U (en) | Mask with built-in hydrogen production inner core | |
| CN212282479U (en) | Respirator for improving ventilation environment of chronic obstructive pulmonary disease | |
| CN212997872U (en) | Breathing and inhaling separated artificial nose mask | |
| CN212347490U (en) | Sub-channel breathing filter capable of preventing countercurrent | |
| CN111437531A (en) | Filter type mask for incoming and outgoing calls | |
| CN213466558U (en) | Built-in sub-channel breathing device and mask | |
| CN110681027A (en) | Closed anaesthetic mask capable of preventing anaesthetic gas from escaping | |
| CN212369436U (en) | Respiratory valve body structure of filter type mask for incoming and outgoing calls | |
| CN212383097U (en) | Filter type mask for incoming and outgoing calls | |
| CN215653499U (en) | Medical protective mask comfortable to wear | |
| CN214018800U (en) | Breathe internal medicine nursing and use artificial respirator | |
| CN206007741U (en) | A kind of oxygen absorption artificial respirator for cardiovascular internal medicine department | |
| CN212065764U (en) | Protective mask | |
| CN212347376U (en) | Atomizing inhalation device | |
| CN211301824U (en) | Breathing and breathing branch channel flow general mask for filtering and purifying air by filter bag | |
| CN212814420U (en) | Separate filtering type mask | |
| WO2023035340A1 (en) | Mask assistor | |
| CN218187566U (en) | Sub-channel breathing device and mask with labyrinth expiration channel and flat plate intubation tube | |
| CN212368382U (en) | Medical mask for nursing hepatitis patients |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |