Liquid-filtering multi-purpose respiratory protective mask

Abstract

The present application belongs to the technical field of respiratory protection appliances, and particularly relates to a liquid-filtering multifunctional respiratory protection mask, which comprises a mask body, a breathing mask installed on the front side of the mask body, an exhalation pipe located at the middle and air inlet filtering mechanisms located at both sides installed on the breathing mask, the air inlet filtering mechanism comprising a filter screen, a liquid filter element and an air induction fan, the liquid filter element being arranged between the filter screen and the air induction fan, and the air induction fans of the air inlet filtering mechanisms being distributed close to the breathing mask. The liquid filter element is used in the air inlet filtering mechanism to replace the traditional solid filtering material, and a liquid replacement opening is arranged, so that the filter element does not need to be removed, the purification liquid can be supplemented or replaced at any time and anywhere, there is no risk of uninterrupted protection, and the respiratory protection function can be realized conveniently, at low cost and safely. The liquid filter element with different internal structures is designed based on the gas-liquid-solid multiphase action mechanism under micro scale, so that the harmful components in the polluted gas can be fully adsorbed and dissolved by the purification liquid, and the filtering efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the technical field of respiratory protective equipment, specifically relating to a liquid-filtering multifunctional respiratory protective mask. Background Technology

[0002] Respiratory protective equipment mainly includes masks and face shields. Compared with masks, face shields have higher protective efficiency.

[0003] The following shortcomings have been found in the use of existing face mask-type respiratory protective equipment: 1) The filter components are easily saturated and need to be replaced regularly, otherwise the protective efficiency will be greatly reduced and even secondary hazards may be caused; 2) There is a protection interruption during the disassembly and replacement of the filter components, which cannot continuously protect the user; 3) The filter components have a single filtration function, are expensive, and have high operating costs. Summary of the Invention

[0004] The purpose of this invention is to overcome the problems of existing respiratory protective equipment, such as easy absorption saturation of filter components, need for regular replacement, single filtration function, and high cost of use, and to provide a liquid-filtering multifunctional respiratory protective mask.

[0005] To achieve the above-mentioned technical objectives and effects, the present invention is implemented through the following technical solution:

[0006] A liquid-filtering multifunctional respiratory protective mask includes a mask body, a breathing mask is installed on the front side of the mask body, an exhalation tube located in the middle and air intake filtering mechanisms located on both sides of the breathing mask, the air intake filtering mechanism includes a filter screen, a liquid filter element and an exhaust fan, at least one liquid filter element is installed between the filter screen and the exhaust fan, and the exhaust fans of the air intake filtering mechanism are distributed close to the breathing mask.

[0007] Furthermore, in the aforementioned liquid-filtering multifunctional respiratory protective mask, a diaphragm-type one-way exhalation valve is installed inside the exhalation tube, and the outer end of the exhalation tube is inclined downward relative to the inner end, which can remove the CO2 gas exhaled by the user and the water droplets condensed inside the breathing mask.

[0008] Furthermore, in the aforementioned liquid-filtering multifunctional respiratory protective mask, the filter mesh size of the air intake filtration mechanism meets the requirements for preliminary filtration of solid particulate pollutants in contaminated gas.

[0009] Furthermore, in the aforementioned liquid-filtering multifunctional respiratory protective mask, the liquid filter element includes a tube shell. The inner cavity of the tube shell is divided into an inlet connection section, a purified liquid storage section, and an outlet connection section by two liquid-separating membranes. An air inlet one-way valve is installed at the outlet connection section of the tube shell to prevent the backflow of purified gas. A liquid replacement port is installed on the outside of the tube shell to facilitate the replenishment or replacement of the purified liquid stored in the purified liquid storage section.

[0010] Furthermore, in the aforementioned liquid-filtering multifunctional respiratory protective mask, the liquid-blocking membrane has the function of being breathable but impermeable to water, which can prevent the purified liquid stored in the purified liquid storage section from seeping out towards the inlet connection section or the outlet connection section.

[0011] Furthermore, in the aforementioned liquid-filtering multifunctional respiratory protective mask, the tube shell is provided with an internal or external thread structure at the inlet connection section to facilitate connection with the filter screen, and the tube shell is provided with an internal or external thread structure at the outlet connection section to facilitate connection with the exhaust fan.

[0012] Furthermore, in the above-mentioned liquid-filtering multifunctional respiratory protective mask, the tube shell is provided with a functional structure inside the purification liquid storage section to enable the filter liquid to fully adsorb or dissolve harmful components in the gas, thereby improving the filtration effect.

[0013] The functional structure is one of the following ad structures:

[0014] a. A packing block with liquid microchannels, wherein the cross-section of the liquid microchannels is circular or other shapes;

[0015] b. Fill with silicone balls of a certain density;

[0016] c. A baffle structure, comprising several staggered baffles;

[0017] d. A trapezoidal partition structure comprising at least one set of oppositely arranged trapezoidal partitions, wherein the distance between two trapezoidal partitions in the same set gradually decreases from both ends toward the middle.

[0018] Furthermore, in the aforementioned liquid-filtering multifunctional respiratory protective mask, the radius of the liquid microchannel in the filling block is 0.05–0.2 mm; and the radius of the silicone ball is 0.1–0.3 mm.

[0019] Furthermore, in the aforementioned liquid-filtering multifunctional respiratory protective mask, the mask body is made of transparent PP, PC, or PE plastic material, and the mask body can cover the user's entire face, with good light transmittance and field of vision.

[0020] The shell material of the liquid filter element is PDMS silicone or plastic, which has the advantages of corrosion resistance, stable physical and chemical properties, low cost and rapid molding.

[0021] The purification solution is water or a synthetic functional liquid.

[0022] Furthermore, in the aforementioned liquid-filtering multifunctional respiratory protective mask, the portion of the mask located within the mask body can fit snugly against the user's face around the mouth and nose. A silicone sealing gasket is provided at the outer edge of the mask body to ensure that harmful gases cannot leak into the mask's interior. The mask body is equipped with a convenient wearing strap. Specifically, the strap connects to the mask body around its perimeter to secure and adjust the position and tightness between the mask body and the user's head.

[0023] The beneficial effects of this invention are:

[0024] 1. The air intake filtration mechanism of the present invention uses a liquid filter element instead of traditional solid filter materials such as filter cotton and activated carbon, and is equipped with a liquid replacement port. There is no need to remove the filter element. The purification liquid can be added or replaced anytime and anywhere according to the user's needs. There is no risk of uninterrupted protection. It can achieve convenient, low-cost and safe respiratory protection function.

[0025] 2. This invention designs liquid filter elements with different internal structures based on the gas-liquid-solid multiphase interaction mechanism at the microscale, which can achieve full adsorption and dissolution of harmful components in polluted gas by the purified liquid, thereby improving filtration efficiency.

[0026] 3. The liquid filter element of the present invention is provided with connecting threads to realize multi-stage filter element combination filtration, which is convenient for disassembly and assembly, and can achieve multi-functional purification function. In addition, the active air supply of the exhaust fan reduces the airflow resistance of the intake air and ensures that the user can breathe smoothly.

[0027] Of course, any product implementing this invention does not necessarily need to achieve all of the above advantages at the same time. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is an exploded view of the air intake filter mechanism in this invention;

[0031] Figure 3 This is a schematic diagram of the liquid filter element in Embodiment 1 of the present invention;

[0032] Figure 4This is a schematic diagram of the liquid filter element in Embodiment 2 of the present invention;

[0033] Figure 5 This is a cross-sectional schematic diagram of the filling block in Embodiment 2 of the present invention;

[0034] Figure 6 This is a schematic diagram of the liquid filter element in Embodiment 3 of the present invention;

[0035] Figure 7 This is a schematic diagram of the liquid filter element in Embodiment 4 of the present invention;

[0036] Figure 8 This is a schematic diagram of the liquid filter element in Embodiment 5 of the present invention;

[0037] In the attached diagram, the component numbers are as follows:

[0038] 1-Filter screen, 2-Liquid filter element, 201-Tube shell, 202-Liquid diaphragm, 203-Inlet connection section, 204-Purified liquid storage section, 205-Outlet connection section, 206-Inlet one-way valve, 207-Liquid exchange port, 208-Filling block, 209-Silicone ball, 210-Baffle structure, 211-Trapezoidal baffle structure, 3-Exhaust fan, 4-Breathing mask, 5-Exhalation tube, 6-Mask body, 7-Silicone sealing gasket, 8-Fixing strap. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Example 1

[0041] like Figures 1 to 3 As shown, this embodiment provides a liquid-filtering multifunctional respiratory protective mask, including a mask body 6, a breathing mask 4 installed on the front side of the mask body 6, an exhalation tube 5 located in the middle and an air intake filtering mechanism located on both sides of the breathing mask 4. The air intake filtering mechanism includes a filter screen 1, a liquid filter element 2 and an exhaust fan 3. The liquid filter element 2 is disposed between the filter screen 1 and the exhaust fan 3, and the exhaust fan 3 of the air intake filtering mechanism is distributed close to the breathing mask 4.

[0042] In this embodiment, a diaphragm-type one-way exhalation valve is installed inside the exhalation tube 5. The outer end of the exhalation tube 5 is inclined downward relative to the inner end, which can expel the CO2 gas exhaled by the user and the water droplets condensed inside the breathing mask.

[0043] In this embodiment, the filter mesh 1 in the air intake filtration mechanism has a filter pore size that meets the requirements for preliminary filtration of solid particulate pollutants in the polluted gas.

[0044] In this embodiment, the liquid filter element 2 includes a housing 201. The inner cavity of the housing 201 is divided into an inlet connection section 203, a purified liquid storage section 204, and an outlet connection section 205 by two liquid-separating membranes 202. An inlet one-way valve 206 is installed at the outlet connection section 205 of the housing 201 to prevent the backflow of purified gas. A liquid exchange port 207 is installed on the outside of the housing 201 to facilitate the replenishment or replacement of the purified liquid stored in the purified liquid storage section 204.

[0045] In this embodiment, the liquid-blocking membrane 202 has the function of being breathable but impermeable to water, and can prevent the purified liquid stored in the purified liquid storage section 204 from seeping out into the inlet connection section 203 or the outlet connection section 205.

[0046] In this embodiment, the shell 201 is provided with an internal or external thread structure at the inlet connection section 203 to facilitate connection with the filter screen 1, and the shell 201 is provided with an internal or external thread structure at the outlet connection section 205 to facilitate connection with the induced draft fan 3. In order to realize multi-stage filtration combination, one end can be set as an internal thread structure and the other end can be set as a matching external thread structure.

[0047] In this embodiment, the mask body 6 is made of transparent PP, PC, or PE plastic material, and can cover the user's entire face, providing good light transmittance and field of vision. The shell 201 of the liquid filter element 2 is made of PDMS silicone or plastic material, which has the advantages of corrosion resistance, stable physical and chemical properties, low cost, and rapid molding capability. The purification liquid is a functional liquid for detoxification, deodorization, etc., prepared from water, synthetic agents, or medical solutions.

[0048] In this embodiment, the breathing mask 4 is made of TPE soft rubber or silicone material. The part of the breathing mask 4 located inside the mask body 6 can fit tightly to the face around the user's mouth and nose. A silicone sealing gasket 7 is provided at the outer edge of the mask body 6 to ensure that harmful gases cannot leak into the mask. A fastening strap 8 is installed on the mask body 6 for easy wearing.

[0049] One specific application of this embodiment is as follows: When the user's environment contains smoke, dust, odors, or toxic components, a functional liquid capable of adsorbing, filtering, or dissolving these harmful components is injected into the purification liquid storage section 204 of the liquid filter element 2 through the liquid exchange port 207. The liquid filter element 2 is then connected to the filter screen 1 and the exhaust fan 3 via connecting threads. Alternatively, multiple stages of liquid filter elements 2 can be combined and connected according to the user's purification needs to achieve multi-functional purification. Under the action of the exhaust fan 3, the air inlet one-way valve 206 of the liquid filter element 2 opens. The contaminated gas enters the purification liquid storage section 204 of the liquid filter element 2 after primary filtration by the filter screen 1. The harmful components in the gas are adsorbed or dissolved by the functional filter liquid. The purified air enters the breathing mask 4 and then into the user's nasal cavity, completing the inhalation process. When the user exhales, the air inlet one-way valve 206 in the liquid filter element 2 closes, and the exhalation one-way valve of the exhalation tube 5 opens, expelling exhaled carbon dioxide and other gases, completing the exhalation process. The exhalation tube 5 is set to tilt downwards, which can simultaneously expel water droplets condensed inside the breathing mask 4, keeping the user's face dry.

[0050] Example 2

[0051] The structure and application of this embodiment are basically the same as those of Embodiment 1, with the following differences: Figure 4 and Figure 5 As shown: The casing 201, located inside the purification liquid storage section 204, has a functional structure that allows the filtration liquid to fully adsorb or dissolve harmful components in the gas, thereby improving the filtration effect. This functional structure is a packing block 208 with liquid microchannels. The cross-section of the liquid microchannels is circular or other shapes; the radius of the liquid microchannels in the packing block 208 is 0.05–0.2 mm. Under the action of liquid surface tension, the liquid microchannels contain the purification liquid that purifies the harmful components of the gas.

[0052] After passing through the primary filtration of filter screen 1, the polluted gas enters the liquid microchannel of the filling block 208 in the purification liquid storage section 204. Under the action of gas, liquid and solid multiphase, the harmful components in the gas are adsorbed or dissolved by the functional filter liquid.

[0053] Example 3

[0054] The structure and application of this embodiment are basically the same as those of Embodiment 1, with the following differences: Figure 6 As shown: The shell 201, located inside the purification liquid storage section 204, has a functional structure that allows the filtration liquid to fully adsorb or dissolve harmful components in the gas, thereby improving the filtration effect. This functional structure consists of silica gel balls 209 filled with a certain density, the radius of which is 0.1–0.3 mm.

[0055] The silica gel balls 209 are evenly distributed in the filtrate. When the contaminated gas enters the inner cavity of the purification liquid storage section 204, vortices and flow are generated near the silica gel balls 209. Through the interaction of gas, liquid and solid, the filtrate fully adsorbs or dissolves the harmful components in the gas, thereby improving the filtration effect.

[0056] Example 4

[0057] The structure and application of this embodiment are basically the same as those of Embodiment 1, with the following differences: Figure 7 As shown: The casing 201, located inside the purification liquid storage section 204, has a functional structure that allows the filtrate to fully adsorb or dissolve harmful components in the gas, thereby improving the filtration effect. This functional structure is a baffle structure 210, which includes several staggered baffles.

[0058] When the contaminated gas enters the inner cavity of the purification liquid storage section 204, vortices and flow around it are generated near the baffle. Through the interaction of gas, liquid and solid, the filtration liquid can fully adsorb or dissolve the harmful components in the gas, thereby improving the filtration effect.

[0059] Example 5

[0060] The structure and application of this embodiment are basically the same as those of Embodiment 1, with the following differences: Figure 8 As shown: The shell 201 is located inside the purification liquid storage section 204 and has a functional structure that enables the filtration liquid to fully adsorb or dissolve harmful components in the gas, thereby improving the filtration effect. This functional structure is a trapezoidal partition structure 211, which includes at least one set of oppositely arranged trapezoidal partitions. The distance between two trapezoidal partitions in the same set gradually decreases from both ends to the middle, that is, the cavity cross-section is a Venturi structure.

[0061] The Venturi constrictor and expander tubes significantly improve the stability of microbubble generation after gas enters the purified liquid storage section 204, reducing bubble size and enhancing filtration efficiency. Trapezoidal baffles can be configured in multiple series configurations to further improve filtration performance, depending on the size of the liquid chamber.

[0062] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A liquid-filtering multifunctional respiratory protective mask, comprising a mask body (6), characterized in that: A breathing mask (4) is installed on the front side of the mask body (6). An exhalation tube (5) located in the middle and an air intake filter mechanism located on both sides are installed on the breathing mask (4). The air intake filter mechanism includes a filter screen (1), a liquid filter element (2) and an exhaust fan (3). At least one liquid filter element (2) is installed between the filter screen (1) and the exhaust fan (3). The exhaust fan (3) of the air intake filter mechanism is distributed close to the breathing mask (4). The liquid filter element (2) includes a shell (201). The inner cavity of the shell (201) is divided into an inlet connection section (203), a purified liquid storage section (204), and an outlet connection section (205) by two liquid-separating membranes (202). An air inlet check valve (206) is installed at the outlet connection section (205) of the shell (201) to prevent the backflow of purified gas. A liquid exchange port (207) is installed on the outside of the shell (201) to facilitate the replenishment or replacement of the purified liquid stored in the purified liquid storage section (204). The liquid-separating membrane (202) has the function of being breathable but impermeable to water, and can prevent the purified liquid stored in the purified liquid storage section (204) from seeping out to the inlet connection section (203) or the outlet connection section (205). The shell (201) is located inside the purification liquid storage section (204) and is equipped with a functional structure that enables the filtration liquid to fully adsorb or dissolve harmful components in the gas, thereby improving the filtration effect. The functional structure is one of the following three structures: a. A filling block (208) with liquid microchannels, wherein the cross-section of the liquid microchannels is circular or other shapes; b. Fill with silicone balls of a certain density (209); c. Trapezoidal partition structure (211), comprising at least one set of oppositely arranged trapezoidal partitions, wherein the distance between two trapezoidal partitions in the same set gradually decreases from both ends toward the middle.

2. The liquid-filtering multifunctional respiratory protective mask according to claim 1, characterized in that: The exhalation tube (5) is equipped with a diaphragm-type one-way exhalation valve. The outer end of the exhalation tube (5) is inclined downward relative to the inner end, which can expel the CO2 gas exhaled by the user and the water droplets condensed inside the breathing mask.

3. The liquid-filtering multifunctional respiratory protective mask according to claim 1, characterized in that: The filter mesh (1) in the air intake filtration mechanism has a filter hole specification that meets the requirements for preliminary filtration of solid particulate pollutants in the polluted gas.

4. The liquid-filtering multifunctional respiratory protective mask according to claim 1, characterized in that: The shell (201) is provided with an internal or external thread structure at the inlet connection section (203) to facilitate connection with the filter screen (1), and the shell (201) is provided with an internal or external thread structure at the outlet connection section (205) to facilitate connection with the induced draft fan (3).

5. The liquid-filtering multifunctional respiratory protective mask according to claim 1, characterized in that: The radius of the liquid microchannel in the filling block (208) is 0.05-0.2 mm; the radius of the silicone ball (209) is 0.1-0.3 mm.

6. The liquid-filtering multifunctional respiratory protective mask according to claim 1, characterized in that: The mask body (6) is made of transparent PP, PC or PE plastic material. The mask body (6) can cover the user's entire face and has good light transmission and field of vision. The shell (201) of the liquid filter element (2) is made of PDMS silicone or plastic. The purification solution is water or a synthetic functional liquid.

7. The liquid-filtering multifunctional respiratory protective mask according to claim 1, characterized in that: The portion of the breathing mask (4) located inside the mask body (6) can fit closely to the face around the user's mouth and nose. A silicone sealing pad (7) is provided at the outer edge of the mask body (6) to ensure that harmful gases cannot leak into the mask. A fastening strap (8) is installed on the mask body (6) for easy wearing.

Images