Intake check valve and atomizer having the same

Abstract

The utility model relates to a gas inlet check valve and the atomizer who has it. The gas inlet check valve includes: the grid, is set up with each other interval a plurality of air holes on the grid, the valve, the valve is opposite with the grid, is equipped with the valve body with every the air hole one -to -one on the valve, and the briquetting, the briquetting is arranged in the side of the valve away from the grid and is configured to detachably fix the valve on the grid, is equipped with with every the valve body one -to -one pressure -fitting column on the briquetting, and every the pressure -fitting column is with the side of corresponding the valve body abuts against. The utility model discloses gas inlet check valve structure is stable, can effectively prevent the backflow of the airflow, improves the gas supply efficiency.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to an air intake one-way valve and an nebulizer having the same. Background Technology

[0002] Nebulizers can convert liquid medications into tiny aerosol particles, allowing the medication to act directly on the patient's respiratory tract and lungs through inhalation. This helps to moisturize the airways, thin sputum, and relieve coughs and asthma, and is widely used in the prevention and adjunctive treatment of respiratory diseases.

[0003] Currently, nebulizers generally include components such as a main unit, a medication cup unit, an aerosol plate unit, an air inlet check valve, a reservoir, a mouthpiece, and a breathing mask. The air inlet check valve allows the user to open it during inhalation, enabling the aerosol generated by the aerosol plate unit to smoothly enter the patient's respiratory tract. Conversely, the air inlet check valve closes when the user exhales. This not only prevents medication from being exhaled, improving drug delivery efficiency, but also prevents backflow and biocontamination, avoiding medication waste.

[0004] Common one-way air intake valves include valve structures and diaphragm structures. Valve structures open or close the air intake passage by controlling the opening and closing of the valve; while diaphragm structures open or close the air intake passage by the deformation of the diaphragm itself in response to pressure changes. Compared to valve structures, diaphragm structures have many advantages, such as simpler mechanical structure, more sensitive operation, and longer service life, thus they are widely used in atomizers. However, due to the thinness and softness of the diaphragm material, its structural stability is relatively poor, making it prone to airflow backflow and affecting the normal operation of the atomizer.

[0005] Therefore, a new technical solution is needed in this field to solve the above problems. Utility Model Content

[0006] To address or improve to some extent the technical problem of poor structural stability in existing one-way intake valves, this utility model provides an intake one-way valve. The intake one-way valve includes: a grid plate with a plurality of spaced-apart vent holes; a valve opposite to the grid plate, with a valve body corresponding to each of the vent holes; and a pressure block, disposed on the side of the valve away from the grid plate and configured to detachably fix the valve to the grid plate, the pressure block having a pressing post corresponding to each valve body, and each pressing post abutting against one side of the corresponding valve body.

[0007] Those skilled in the art will understand that the intake one-way valve of this utility model includes a grid plate, a valve, and a pressure block. The grid plate has multiple vent holes spaced apart from each other. The valve is disposed opposite to the grid plate, and each valve body corresponds to one vent hole. The pressure block is arranged on the side of the valve away from the grid plate, and the pressure block can detachably fix the valve to the grid plate, which not only provides structural stability to the entire intake one-way valve but also facilitates the disassembly, maintenance, and replacement of the valve. Furthermore, the pressure block also has a pressing post corresponding to each valve body, and each pressing post abuts against one side of its corresponding valve body. In this way, the pressing post can constrain one side of the valve body between the grid plate and the pressing post, so that when the air pressure changes, the valve body closer to the pressing post deforms less, while the valve body farther from the pressing post deforms more. Through the above settings, on the one hand, irregular deformation of the entire valve body can be avoided, increasing the reliability of the valve body's sealing vent and correspondingly reducing the risk of airflow backflow. On the other hand, the air intake channel is larger at valve bodies with greater deformation and smaller at valve bodies with less deformation, causing the airflow to generate a spiral airflow when flowing through this inclined valve body. The spiral airflow flows along the inside of the reservoir (compared to a straight airflow), which can effectively reduce the time that aerosols stay on the inner wall, reduce the amount of aerosol settling, effectively reduce the volume of dead space area, and thus improve drug delivery efficiency.

[0008] In the preferred embodiment of the above-mentioned one-way air intake valve, the area of ​​each valve body is greater than or equal to the area of ​​the corresponding vent, so that when the valve body covers the vent, the vent can be effectively sealed to prevent airflow backflow.

[0009] In the preferred embodiment of the aforementioned one-way air intake valve, a circumferential protrusion is formed on each vent hole, extending along its circumferential edge and toward the corresponding valve body. In the assembled state, the valve body abuts against the corresponding circumferential protrusion. The circumferential protrusion allows the valve body to easily abut against it, thereby forming an effective sealing connection.

[0010] In the preferred embodiment of the aforementioned intake one-way valve, each of the pressing posts includes a pressing post body, the pressing post body being configured to press the valve body against the circumferential protrusion. The pressing post body and the circumferential protrusion stably constrain the valve body between them.

[0011] In the preferred embodiment of the aforementioned one-way intake valve, the compression column further includes a stop rib extending from the compression column body toward the valve body, wherein the compression column body, the stop rib, and the circumferential protrusion together form a limiting groove that allows the corresponding valve body to be inserted therein. The limiting groove formed by the compression column body, the stop rib, and the circumferential protrusion can more stably constrain the valve body.

[0012] In the preferred embodiment of the above-mentioned one-way intake valve, a first central through hole, a second central through hole, and a third central through hole are respectively provided on the grid plate, the valve, and the pressure block. The diameters of the second and third central through holes are both greater than or equal to the diameter of the first central through hole. Having the diameters of the second and third central through holes greater than or equal to the diameter of the first central through hole reduces resistance and ensures the unobstructed flow of the aerosol channel.

[0013] In the preferred embodiment of the above-mentioned one-way intake valve, the first central through-hole, the second central through-hole, and the third central through-hole have the same centerline. The first central through-hole, the second central through-hole, and the third central through-hole with the same centerline can form a continuous aerosol channel.

[0014] In the preferred embodiment of the above-described intake one-way valve, the grid plate is provided with a plurality of circumferential mounting holes arranged at intervals along the first central through hole, the circumferential mounting holes being located radially between the first central through hole and the vent hole; the valve is provided with circumferential through holes corresponding one-to-one with each of the circumferential mounting holes; and the pressure block is provided with mounting blocks that can extend through the corresponding circumferential through holes and form a snap-fit ​​engagement with the corresponding circumferential mounting holes. Through the above arrangement, the pressure block can conveniently and effectively fix the valve to the grid plate.

[0015] In the preferred embodiment of the aforementioned intake check valve, a snap-fit ​​protrusion is formed at the end of each mounting block to mate with the corresponding circumferential mounting hole. The snap-fit ​​protrusion ensures a reliable snap-fit ​​engagement between the mounting block and the circumferential mounting hole.

[0016] In the preferred embodiment of the aforementioned intake check valve, an inclined guide surface is provided on the snap-fit ​​protrusion. The guide surface allows the mounting block to be easily inserted into the corresponding circumferential through hole and circumferential mounting hole.

[0017] In the preferred embodiment of the above-mentioned one-way air intake valve, the plurality of air vents are evenly spaced along the circumference of the first central through hole, so that the multiple valve bodies on the valve are subjected to more uniform force and the structure is more stable.

[0018] In the preferred embodiment of the above-described one-way intake valve, a sealing ring is provided on the grid plate, extending along the circumferential edge of the first central through hole and toward a direction away from the valve. The sealing ring facilitates a sealed connection with other components (e.g., the atomizing plate unit), ensuring that the atomized aerosol flows smoothly within the first central through hole.

[0019] In the preferred embodiment of the above-described intake check valve, a sealing ring is formed on the circumferential edge of the grille. The sealing ring allows the grille to form a sealed connection with other components (e.g., a mist reservoir).

[0020] In the preferred embodiment of the above-mentioned one-way valve for intake, each of the pressing columns is arranged on the same side of the corresponding valve body, thereby further improving the uniformity of force on multiple valve bodies and better improving the structural stability of the one-way valve for intake.

[0021] In the preferred technical solution of the above-mentioned one-way valve for intake, the valve is made of silicone, rubber, TPE or TPU to enrich the product diversity of the valve.

[0022] To address or improve to some extent the technical problem of poor structural stability of the existing one-way air intake valve, this invention provides an atomizer. The atomizer includes the one-way air intake valve as described in any of the above claims.

[0023] Solution 1. An intake one-way valve (10), characterized in that the intake one-way valve (10) comprises: a grid plate (11) having a plurality of vent holes (1112) spaced apart from each other on the grid plate (11); a valve (12) opposite to the grid plate (11), and a valve body (122) corresponding to each of the vent holes (1112) on the valve (12); and a pressure block (13), the pressure block (13) being arranged on the side of the valve (12) away from the grid plate (11) and configured to detachably fix the valve (12) on the grid plate (11), and a pressing post (133) corresponding to each of the valve body (122) on the pressure block (13), and each pressing post (133) abutting against one side of the corresponding valve body (122).

[0024] Scheme 2. The one-way valve (10) according to Scheme 1 is characterized in that the area of ​​each valve body (122) is greater than or equal to the area of ​​the corresponding vent (1112).

[0025] Solution 3. The one-way valve (10) according to Solution 1 is characterized in that a circumferential protrusion (11121) is formed on each of the vent holes (1112) extending along its circumferential edge and toward the corresponding valve body (122), and in the assembled state, the valve body (122) abuts against the corresponding circumferential protrusion (11121).

[0026] Option 4. The intake one-way valve (10) according to Option 3, characterized in that each of the pressing columns (133) includes a pressing column body (1331) configured to press the valve body (122) onto the circumferential protrusion (11121).

[0027] Option 5. The intake one-way valve (10) according to Option 4 is characterized in that the pressing column (133) further includes a stop rib (1332) extending from the pressing column body (1331) toward the valve body (122), wherein the pressing column body (1331), the stop rib (1332) and the circumferential protrusion (11121) together form a limiting groove that allows the corresponding valve body (122) to be inserted therein.

[0028] Scheme 6. The intake one-way valve (10) according to any one of Schemes 1-5 is characterized in that a first central through hole (1111), a second central through hole (1211), and a third central through hole (1311) are respectively provided on the grid plate (11), the valve (12), and the pressure block (13), wherein the diameters of the second central through hole (1211) and the third central through hole (1311) are both greater than or equal to the diameter of the first central through hole (1111).

[0029] Scheme 7. The intake one-way valve (10) according to Scheme 6 is characterized in that the first central through hole (1111), the second central through hole (1211) and the third central through hole (1311) have the same center line.

[0030] Solution 8. The intake check valve (10) according to Solution 6 is characterized in that a plurality of circumferential mounting holes (1113) are provided on the grid plate (11) at circumferential intervals along the first central through hole (1111), the circumferential mounting holes (1113) being located radially between the first central through hole (1111) and the vent hole (1112); a circumferential through hole (1212) corresponding to each of the circumferential mounting holes (1113) is provided on the valve (12); and a mounting block (132) is provided on the pressure block (13) that can extend through the corresponding circumferential through hole (1212) and form a snap-fit ​​with the corresponding circumferential mounting hole (1113).

[0031] Solution 9. The intake check valve (10) according to Solution 8 is characterized in that a snap-fit ​​protrusion (1321) is formed at the end of each mounting block (132) to match the corresponding circumferential mounting hole (1113).

[0032] Scheme 10. The intake check valve (10) according to Scheme 9 is characterized in that an inclined guide surface (13211) is provided on the snap-fit ​​protrusion (1321).

[0033] Solution 11. The intake check valve (10) according to Solution 6 is characterized in that a plurality of the vent holes (1112) are evenly spaced along the circumference of the first central through hole (1111); and / or a sealing ring (112) is provided on the grid plate (11) along the circumferential edge of the first central through hole (1111) and extending toward a direction away from the valve (12).

[0034] Option 12. The intake one-way valve (10) according to Option 1 is characterized in that a sealing ring (113) is formed on the circumferential edge of the grid plate (11); and / or each of the pressing posts (133) is arranged on the same side of the corresponding valve body (122); and / or the valve (12) is made of silicone, rubber, TPE or TPU.

[0035] Scheme 13. An atomizer (1), characterized in that the atomizer (1) includes an air intake check valve (10) according to any one of Schemes 1-12. Attached Figure Description

[0036] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which:

[0037] Figure 1 This is a first structural schematic diagram of an embodiment of the intake one-way valve of this utility model;

[0038] Figure 2 This is a second structural schematic diagram of an embodiment of the intake one-way valve of this utility model;

[0039] Figure 3 This is an exploded structural diagram of an embodiment of the intake one-way valve of this utility model;

[0040] Figure 4 This is a schematic diagram of the assembly structure of the pressure block and valve in an embodiment of the intake one-way valve of this utility model;

[0041] Figure 5 This is a schematic diagram of the assembly structure of an embodiment of the atomizer of this utility model.

[0042] List of reference numerals in the attached diagram:

[0043] 1. Atomizer; 10. Inlet one-way valve; 11. Grid plate; 111. Grid plate body; 1111. First central through hole; 1112. Vent hole; 11121. Circumferential protrusion; 1113. Circumferential mounting hole; 112. Sealing ring; 113. Sealing ring; 114. Reinforcing rib; 12. Valve; 121. Fixing ring; 1211. Second central through hole; 1212. Circumferential through hole; 122. Valve body; 1221. Fixed side; 1222. Movable side; 13. Pressure block; 131. Pressure block body; 1311. Third central through hole; 132. Mounting block; 1321. Snap-fit ​​protrusion; 13211. Guide surface; 133. Pressing column; 1331. Pressing column body; 1332. Stop rib; 20. Liquid cup; 30. Atomizer. Detailed Implementation

[0044] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0045] It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "front", "rear", "inner", "outer", etc., indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0046] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0047] To address or improve to some extent the technical problem of poor structural stability in existing one-way intake valves, this utility model provides an intake one-way valve 10. The intake one-way valve 10 includes: a grid plate 11 with a plurality of spaced-apart vent holes 1112; a valve 12 opposite to the grid plate 11, with a valve body 122 corresponding to each vent hole 1112; and a pressure block 13 disposed on the side of the valve 12 away from the grid plate 11 and configured to fix the valve 12 to the grid plate 11. The pressure block 13 has a pressing post 133 corresponding to each valve body 122, and each pressing post 133 abuts against one side of the corresponding valve body 122.

[0048] Figure 1 This is a first structural schematic diagram of an embodiment of the intake one-way valve of this utility model;

[0049] Figure 2 This is a second structural schematic diagram of an embodiment of the intake one-way valve of this utility model; Figure 3 This is an exploded structural diagram of an embodiment of the intake one-way valve of this utility model. Figures 1-3 As shown, in one or more embodiments, the intake one-way valve 10 of this utility model includes a grid plate 11, a valve 12, and a pressure block 13. The valve 12 is detachably fixed to the grid plate 11 via the pressure block 13.

[0050] like Figures 1-3 As shown, in one or more embodiments, the grid plate 11 has a generally square grid plate body 111 with rounded corners. Alternatively, the grid plate body 111 may also be square, circular, or other suitable shapes. The grid plate body 111 may be integrally formed using PP, PC, or other suitable resin materials via injection molding. A generally circular first central through-hole 1111 is provided in the center of the grid plate body 111. In the assembled state, the grid plate body 111 is opposite to the atomizing plate unit (not shown) of the atomizer 1, allowing the aerosol atomized by the atomizing plate unit to pass through the first central through-hole 1111. See also Figure 2 In one or more embodiments, a sealing ring 112 is further provided on the grid plate body 111. The sealing ring 112 extends along the circumferential edge of the first central through hole 1111 and extends in a direction away from the valve 12. In other words, in the assembled state, the sealing ring 112 extends from the grid plate body 111 in a direction close to the atomizing plate unit, so as to form a reliable sealing connection between the atomizing plate unit, prevent aerosol leakage, and ensure that the aerosol flows smoothly to the first central through hole 1111.

[0051] See also Figure 3In one or more embodiments, four vent holes 1112 spaced apart from each other are provided on the grid plate body 111. Each vent hole 1112 has a generally "L"-shaped shape. Alternatively, the vent holes 1112 can also be provided in other suitable shapes, such as circular, square, etc. Alternatively, the number of vent holes 1112 can also be more or less than four, such as three, five, etc. Preferably, the four vent holes 1112 are the same in shape and size, which not only facilitates processing but also further improves the uniformity of force on the valve 12. In one or more embodiments, the four vent holes 1112 are evenly spaced along the circumference of the first central through hole 1111, so that the valve 12 opposite to the grid plate body 111 is subjected to uniform force and the structure is more stable. In one or more embodiments, a circumferential protrusion 11121 is formed on each vent hole 1112. The circumferential protrusion 11121 extends along the circumferential edge of the vent hole 1112 and toward the corresponding valve body 122. Therefore, in the assembled state, the valve body 122 can directly abut against the circumferential protrusion 11121, reducing the contact area between the valve body 122 and the grid body 111, and ensuring that the valve body 122 effectively seals the vent hole 1112.

[0052] See also Figure 3 In one or more embodiments, four circumferential mounting holes 1113 spaced apart from each other are provided on the grid plate body 111. These four circumferential mounting holes 1113 are circumferentially spaced along the first central through hole 1111. Further, these four circumferential mounting holes 1113 are evenly spaced along the circumferential direction of the first central through hole 1111. Each circumferential mounting hole 1113 is located radially between the first central through hole 1111 and the vent hole 1112. Each circumferential mounting hole 1113 has a generally arcuate shape. Each circumferential mounting hole 1113 can form a snap-fit ​​engagement with the corresponding mounting block 132 on the pressure block 13 to fix the valve 12 on the grid plate 11. It should be noted that the number, shape, and arrangement of the circumferential mounting holes 1113 can also be adjusted according to actual needs, which will not be elaborated here.

[0053] See also Figure 3 In one or more embodiments, a sealing ring 113 is further provided on the circumferential edge of the grid plate body 111. The sealing ring 113 can be made of TPE, silicone, TPU or other suitable flexible materials. The sealing ring 113 and the grid plate body 111 can be formed by processes such as two-color injection molding or overmolding. The sealing ring 113 can enhance the sealing performance between the grid plate 11 and other components (such as the liquid cup 20, the mist reservoir 30, etc.). In one or more embodiments, a groove (not shown in the figure) that can match the mouth of the mist reservoir 30 is also provided on the side of the sealing ring 113 near the valve 12 to further improve the sealing performance.

[0054] See also Figure 3 In one or more embodiments, the grid body 111 is further provided with four reinforcing ribs 114 spaced apart from each other. Each reinforcing rib 114 extends from the sealing ring 113 in a direction toward the first central through hole 1111. The arrangement of the reinforcing ribs 114 can enhance the structural stability of the sealing ring 113 and prevent the sealing ring 113 from undergoing severe deformation, thus reducing the sealing performance. In addition, the reinforcing ribs 114 can also improve the mechanical strength and structural stability of the entire grid body 111.

[0055] like Figure 3 As shown, valve 12 and grating 11 are opposite to each other. Figure 4 This is a schematic diagram of the assembly structure of the pressure block and valve in an embodiment of the intake one-way valve of this utility model. See also Figure 3 and Figure 4 In one or more embodiments, four spaced-apart valve bodies 122 are provided on the valve 12. Each valve body 122 corresponds one-to-one with a vent 1112, and the area of ​​each valve body 122 is larger than the area of ​​the corresponding vent 1112. This allows the valve body 122 to effectively cover the corresponding vent 1112, ensuring that airflow does not flow back to the vent 1112 through the valve body 122. In one or more embodiments, each valve body 122 has a generally fan-shaped shape. Preferably, the four valve bodies 122 are identical in shape and size, which not only facilitates manufacturing but also further improves the uniformity of force distribution on the entire valve 12. It should be noted that the number, shape, and size of the valve bodies 122 can also be adjusted according to actual needs, and will not be elaborated further here.

[0056] See also Figure 3 and Figure 4In one or more embodiments, the valve 12 further includes a generally annular retaining ring 121. Four valve bodies 122 are spaced apart from each other circumferentially along the retaining ring 121. Further, the four valve bodies 122 are evenly spaced apart circumferentially along the retaining ring 121. The retaining ring 121 and the valve bodies 122 can be integrally molded from a suitable flexible material, such as silicone, rubber, TPE, or TPU. The thickness of the retaining ring 121 is greater than the thickness of the valve bodies 122 to improve the overall structural stability of the valve 12. In one or more embodiments, a second central through-hole 1211 is provided in the middle of the retaining ring 121, opposite to the first central through-hole 1111. The diameter of the second central through-hole 1211 is greater than or equal to the diameter of the first central through-hole 1111. Preferably, the second central through-hole 1211 and the first central through-hole 1111 have the same centerline C. In one or more embodiments, the fixing ring 121 is further provided with four circumferential through holes 1212 spaced apart circumferentially along the second central through hole 1211. In the assembled state, each circumferential through hole 1212 corresponds one-to-one with the circumferential mounting hole 1113 on the grid plate 11, so that the corresponding mounting block 132 on the pressure block 13 can extend through the circumferential through hole 1212 and be fixed in the circumferential mounting hole 1113. It should be noted that the number, shape and arrangement of the circumferential through holes 1212 can also be adjusted according to actual needs, as long as they can match the circumferential mounting holes 1113 and the mounting block 132.

[0057] like Figure 3 and Figure 4 As shown, in one or more embodiments, the pressure block 13 is arranged on the side of the valve 12 away from the grid plate 11 and configured to detachably fix the valve 12 to the grid plate 11. The pressure block 13 has a generally circular pressure block body 131. A third central through hole 1311 is provided in the middle of the pressure block body 131. The third central through hole 1311 is opposite to the first central through hole 1111 and the second central through hole 1211, respectively. Preferably, the third central through hole 1311 has the same centerline C as the first central through hole 1111 and the second central through hole 1211. Therefore, in the assembled state, the first central through-hole 1111, the second central through-hole 1211, and the third central through-hole 1311 together form a continuous aerosol channel, allowing the aerosol generated by the atomizing plate unit connected to the intake check valve 10 to pass sequentially through the first central through-hole 1111, the second central through-hole 1211, and the third central through-hole 1311, and then flow into the mist storage tank 30 near the pressure block 13. In one or more embodiments, the diameter of the third central through-hole 1311 is also greater than or equal to the diameter of the first central through-hole 1111, so that the aerosol has less resistance when flowing through the entire intake check valve 10, ensuring its smooth flow.

[0058] See also Figure 3 and Figure 4In one or more embodiments, four compression posts 133 spaced apart from each other circumferentially are formed on the compression block body 131. Each compression post 133 corresponds to a valve body 122, and each compression post 133 abuts against one side of the corresponding valve body 122. Each valve body 122 has a fixed side 1221 and a movable side 1222. The compression post 133 abuts against the fixed side 1221 of the corresponding valve body 122. Therefore, when the pressure on the valve body 122 on the side of the grid plate 11 is greater than the pressure on the side of the compression block 13, the valve body 122 will deform, wherein the valve body 122 away from the compression post 133 (i.e., the valve body 122 near the movable side 1222) will produce a larger deformation, while the valve body 122 near the compression post 133 (i.e., the valve body 122 near the fixed side 1221) will produce a smaller deformation. This not only avoids irregular deformation of the entire valve body 122, increasing the reliability of the valve body 122 sealing the vent 1112 and correspondingly reducing the risk of airflow backflow, but also generates a spiral airflow when the airflow passes through this inclined valve body 122. The aerosol, after passing through the first central through-hole 111, the second central through-hole 1211, and the third central through-hole 1311, is located at the center of the spiral airflow, preventing the aerosol from prolonged contact with the inner wall of the reservoir 30 and thus avoiding deposition, thereby improving the aerosol delivery efficiency. In one or more embodiments, each pressing column 133 is arranged on the same side of the corresponding valve body 122, making the force on the multiple valve bodies 122 more uniform. Based on Figure 3 As shown, each compression post 133 is positioned on the left side (clockwise) of the corresponding valve body 122. Alternatively, each compression post 133 may also be positioned on the right side of the corresponding valve body 122. It should be noted that the compression posts 133 may also be provided in other suitable numbers, such as three or five, as long as they can be fitted to the valve body 122.

[0059] See also Figure 3 and Figure 4 In one or more embodiments, each pressing post 133 has a pressing post body 1331 extending straight outward from the circumferential edge of the pressing block body 131. The pressing post body 1331 and the pressing block body 131 are substantially in the same plane. Based on Figure 3 and Figure 4 As shown, both the pressing post body 1331 and the pressing block body 131 are in a vertical plane. Each pressing post body 1331 is parallel to and spaced a certain distance from a straight line passing through the center of the third central through hole 1311. In the assembled state, the pressing post body 1331 presses the corresponding valve body 122 onto the corresponding circumferential protrusion 11121 on the grid plate 11.

[0060] See also Figure 3 and Figure 4 In one or more embodiments, a stop rib 1332 is further provided on each pressing column body 1331. The stop rib 1332 extends outward from the pressing column body 1331. Based on Figure 3 As shown, the stop rib 1332 is located on the left side of each compression body (clockwise) and extends towards the direction of the grid plate 11 (i.e., towards the corresponding valve body 122). In the assembled state, the compression post body 1331, the stop rib 1332, and the corresponding circumferential protrusion 11121 on the grid plate 11 together form a limiting groove (not shown in the figure) that allows the corresponding valve body 122 to be inserted into it. The setting of the limiting groove can further improve the reliability of fixing the valve body 122 and prevent the valve body 122 from slipping due to pressure changes.

[0061] See also Figure 3 and Figure 4 In one or more embodiments, four mounting blocks 132 spaced apart from each other circumferentially are further provided on the pressing block body 131. Each mounting block 132 is located between two adjacent pressing pillars 133. Each mounting block 132 extends vertically outward from the circumferential edge of the pressing block body 131. Preferably, the mounting blocks 132, pressing pillars 133, and pressing block body 131 can be integrally molded from a suitable resin material using an injection molding process, such as PE, PP, PC, etc. Figure 3 As shown, mounting blocks 132 extend vertically from the circumferential edge of the press-fit body toward the direction close to the grid plate 11. Each mounting block 132 has a generally arcuate shape. In the assembled state, each mounting block 132 extends through a corresponding circumferential through-hole 1212 and forms a snap-fit ​​engagement with a corresponding circumferential mounting hole 1113. In one or more embodiments, a snap-fit ​​protrusion 1321 is formed at the end of each mounting block 132, such that a reliable snap-fit ​​engagement is formed between the mounting block 132 and the circumferential mounting hole 1113. See also Figure 2 In one or more embodiments, each snap-fit ​​protrusion 1321 is further provided with an inclined guide surface 13211, so that the mounting block 132 can pass smoothly through the circumferential through hole 1212 and the circumferential mounting hole 1113.

[0062] Figure 5 This is a schematic diagram of the assembly structure of an embodiment of the atomizer of this utility model. Figure 5As shown, in one or more embodiments, the present invention also provides an atomizer 1, which includes the one-way air inlet valve 10 described in any of the above embodiments. The atomizer 1 also includes a liquid medicine cup 20 and a reservoir 30, with the one-way air inlet valve 10 arranged between the liquid medicine cup 20 and the reservoir 30. The grid plate 11 of the one-way air inlet valve 10 faces the liquid medicine cup 20, while the pressure block 13 of the one-way air inlet valve 10 faces the reservoir 30. The atomizer 1 also includes an atomizing plate unit (not shown in the figure) fixed on the liquid medicine cup 20, so that the liquid medicine on the liquid medicine cup 20 is atomized into an aerosol after passing through the atomizing plate unit. Alternatively, the atomizer 1 may also include, but is not limited to, a main unit, a mouthpiece, and a breathing mask (all not shown in the figure), etc., which will not be described in detail here.

[0063] The technical solution of this utility model has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. An intake check valve (10), characterized in that, The intake check valve (10) includes: A grid plate (11) has a plurality of vent holes (1112) spaced apart from each other. A valve (12), the valve (12) being opposite the grating (11), and the valve (12) having a valve body (122) corresponding one-to-one with each of the vent holes (1112); and A pressure block (13) is arranged on the side of the valve (12) away from the grid plate (11) and configured to detachably fix the valve (12) on the grid plate (11). The pressure block (13) is provided with a pressing post (133) corresponding to each valve body (122), and each pressing post (133) abuts against one side of the corresponding valve body (122).

2. The intake check valve (10) according to claim 1, characterized in that, The area of ​​each valve body (122) is greater than or equal to the area of ​​the corresponding vent (1112).

3. The intake check valve (10) according to claim 1, characterized in that, A circumferential protrusion (11121) is formed on each of the vent holes (1112) extending along its circumferential edge and toward the corresponding valve body (122), and in the assembled state, the valve body (122) abuts against the corresponding circumferential protrusion (11121).

4. The intake check valve (10) according to claim 3, characterized in that, Each of the compression posts (133) includes a compression post body (1331) configured to press the valve body (122) onto the circumferential protrusion (11121).

5. The intake check valve (10) according to claim 4, characterized in that, The compression post (133) also includes a stop rib (1332) extending from the compression post body (1331) toward the valve body (122). The compression column body (1331), the stop rib (1332), and the circumferential protrusion (11121) together form a limiting groove that allows the corresponding valve body (122) to be inserted therein.

6. The intake check valve (10) according to any one of claims 1-5, characterized in that, A first central through hole (1111), a second central through hole (1211), and a third central through hole (1311) are respectively provided on the grid plate (11), the valve (12), and the pressure block (13). The diameters of the second central through hole (1211) and the third central through hole (1311) are both greater than or equal to the diameter of the first central through hole (1111).

7. The intake check valve (10) according to claim 6, characterized in that, The first central through hole (1111), the second central through hole (1211), and the third central through hole (1311) have the same center line.

8. The intake check valve (10) according to claim 6, characterized in that, The grid plate (11) is provided with a plurality of circumferential mounting holes (1113) arranged circumferentially at intervals along the first central through hole (1111), and the circumferential mounting holes (1113) are located radially between the first central through hole (1111) and the vent hole (1112). The valve (12) is provided with circumferential through holes (1212) corresponding one-to-one with each of the circumferential mounting holes (1113); and The pressure block (13) is provided with a mounting block (132) that can extend through the corresponding circumferential through hole (1212) and form a snap-fit ​​with the corresponding circumferential mounting hole (1113).

9. The intake check valve (10) according to claim 8, characterized in that, At the end of each mounting block (132), a snap-fit ​​protrusion (1321) is formed to mate with the corresponding circumferential mounting hole (1113).

10. The intake check valve (10) according to claim 9, characterized in that, An inclined guide surface (13211) is provided on the snap-fit ​​protrusion (1321).

11. The intake check valve (10) according to claim 6, characterized in that, The plurality of vent holes (1112) are evenly spaced along the circumference of the first central through hole (1111); and / or A sealing ring (112) is provided on the grid plate (11) along the circumferential edge of the first central through hole (1111) and extending in a direction away from the valve (12).

12. The intake check valve (10) according to claim 1, characterized in that, A sealing ring (113) is formed at the circumferential edge of the grid plate (11); and / or Each of the compression posts (133) is arranged on the same side of the corresponding valve body (122); and / or The valve (12) is made of silicone, rubber, TPE or TPU.

13. An atomizer (1), characterized in that, The atomizer (1) includes an intake check valve (10) according to any one of claims 1-12.

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