High-efficiency low-resistance exhaust valve

Abstract

The utility model provides a kind of efficient low-resistance exhaust valve, comprising: annular valve seat, valve cover and flexible valve diaphragm, wherein: the inner ring of annular valve seat is integrally provided with annular knob, the inner ring of annular knob is integrally provided with annular sealing baffle ring, and the outer ring of annular sealing baffle ring and the inner ring of annular knob are integrally provided with boss;Valve cover detachable cover is arranged outside annular knob, and the side wall of valve cover has several exhaust holes, the inner top wall of valve cover is integrally provided with briquetting, and briquetting is set corresponding to boss, and briquetting is set relative to exhaust hole, and flexible valve diaphragm is placed on annular sealing baffle ring.The utility model provides a kind of efficient low-resistance exhaust valve, in gas flow, the cooperation of flexible valve diaphragm and annular sealing baffle ring, exhaust resistance is reduced, and air flow is discharged smoothly;In sealing performance, flexible valve diaphragm automatically adheres sealing function, effectively prevent outside air reflux, and improve protection effect.

Description

Technical Field

[0001] This utility model relates to the field of respiratory protective mask technology, specifically to a high-efficiency, low-resistance exhaust valve. Background Technology

[0002] In industrial production environments, respirators, when paired with particulate respirators or filter cartridges, are crucial equipment for protecting the respiratory systems of industrial workers. However, most respirators currently on the market use elongated cold-flow valves or umbrella-shaped valves. These traditional structures not only have room for improvement in gas flow efficiency, leading to higher air resistance, but some manufacturers even lack valve plate protective covers. This results in reduced protective performance and insufficient structural stability during actual use, making it difficult to fully meet standard requirements and the protective needs of complex industrial scenarios. Therefore, there is an urgent need to develop a new type of exhalation valve structure that combines low gas resistance, high structural stability, and ease of processing and installation.

[0003] Therefore, a high-efficiency, low-resistance exhaust valve is proposed. Utility Model Content

[0004] The present invention aims to solve the problems mentioned in the background art by providing a high-efficiency, low-resistance exhaust valve.

[0005] The specific technical solution is as follows:

[0006] A high-efficiency, low-resistance exhaust valve includes: an annular valve seat, a valve cover, and a flexible valve diaphragm, wherein:

[0007] The annular valve seat has an integrally formed annular convex ring on its inner ring, an integrally formed annular sealing ring on its inner ring, and an integrally formed boss between the outer ring of the annular sealing ring and the inner ring of the annular convex ring.

[0008] The valve cover is detachably mounted on the outside of the annular protrusion, and the side wall of the valve cover has several vent holes. A pressure block is integrally provided on the inner top wall of the valve cover. The pressure block is arranged corresponding to the protrusion and is positioned opposite the vent holes.

[0009] The flexible valve diaphragm rests on the annular sealing ring, with one edge of the flexible valve diaphragm pressed between the pressure block and the boss. As the exhaled airflow passes through the inner ring of the annular sealing ring and enters the internal cavity of the valve cover, the portion of the flexible valve diaphragm near the exhaust port can detach from the annular sealing ring, thereby forming an exhaust channel. This allows the airflow entering the internal cavity of the valve cover to eventually exit through the exhaust port. After the airflow exits the internal cavity of the valve cover, the flexible valve diaphragm automatically adheres to the annular sealing ring under its own elasticity, preventing outside air from flowing back into the inner ring of the annular sealing ring through the exhaust port.

[0010] In the aforementioned high-efficiency, low-resistance exhaust valve, the flexible valve diaphragm is a flexible silicone diaphragm or a flexible rubber diaphragm.

[0011] In the aforementioned high-efficiency, low-resistance exhaust valve, an annular groove is integrally provided on the inner top wall of the valve cover, and an annular convex strip is integrally provided on the outer side of the annular convex ring, the annular convex strip being able to be locked in the annular groove.

[0012] In the aforementioned high-efficiency, low-resistance exhaust valve, a positioning sleeve is integrally provided on the inner top wall of the valve cover, and a positioning rod is integrally provided between the outer ring of the annular sealing ring and the inner ring of the annular convex ring. When the valve cover is tightly closed on the outside of the annular convex ring, the positioning rod is inserted into the positioning sleeve.

[0013] In the aforementioned high-efficiency, low-resistance exhaust valve, the positioning sleeve is positioned close to the pressure block, and the positioning rod is positioned close to the boss.

[0014] In the aforementioned high-efficiency, low-resistance exhaust valve, a cross-shaped reinforcing frame is integrally provided on the inner ring of the annular valve seat.

[0015] In the aforementioned high-efficiency, low-resistance exhaust valve, the surface roughness of both the annular sealing ring and the flexible valve diaphragm is no greater than Ra0.1.

[0016] This utility model has the following beneficial effects:

[0017] This utility model provides a high-efficiency, low-resistance exhaust valve that achieves multiple technical advantages through a unique structural design and component coordination. Regarding gas flow, the combination of the flexible valve diaphragm and the annular sealing ring reduces exhaust resistance, ensuring smooth airflow. In terms of sealing performance, the flexible valve diaphragm's automatic sealing function effectively prevents backflow of external air, enhancing the protective effect. Regarding structural stability, the annular convex ring, boss, and cross-shaped reinforcing frame work together to enhance overall strength, meeting standard requirements for structural stability. The snap-fit ​​connection and positioning structure not only facilitates installation, disassembly, and maintenance but also enhances the stability of connections between components, improving vibration and impact resistance. Furthermore, the flexible valve diaphragm made of specific materials and the low-roughness surface treatment further ensure sealing performance and service life, enabling the exhaust valve to operate stably and reliably in various complex industrial environments. Attached Figure Description

[0018] Figure 1 A schematic diagram of the structure of the high-efficiency, low-resistance exhaust valve provided in this embodiment of the utility model;

[0019] Figure 2 Another structural schematic diagram of the high-efficiency, low-resistance exhaust valve provided in an embodiment of this utility model;

[0020] Figure 3 Schematic cross-sectional view of the high-efficiency, low-resistance exhaust valve provided in this embodiment of the utility model. Figure 1 ;

[0021] Figure 4 for Figure 3 Enlarged structural diagram at point A;

[0022] Figure 5 Schematic cross-sectional view of the high-efficiency, low-resistance exhaust valve provided in this embodiment of the utility model. Figure 2 .

[0023] In the attached image:

[0024] 1. Annular valve seat;

[0025] 2. Valve cover; 201. Vent hole; 202. Annular groove; 203. Positioning sleeve;

[0026] 3. Flexible valve diaphragm;

[0027] 4. Annular sealing retaining ring; 401. Positioning rod; 402. Cross-shaped reinforcing frame;

[0028] 5. Pressing blocks;

[0029] 6. Boss;

[0030] 7. Annular convex ring; 701. Annular convex strip. Detailed Implementation

[0031] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0032] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0033] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0034] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] Example

[0036] The high-efficiency, low-resistance exhaust valve provided in this embodiment, such as Figures 1-5 As shown, it includes: an annular valve seat 1, a valve cover 2, and a flexible valve diaphragm 3, wherein:

[0037] An annular valve seat 1 has an integral annular convex ring 7 on its inner ring, an annular sealing ring 4 on its inner ring, and a boss 6 integrally provided between the outer ring of the annular sealing ring 4 and the inner ring of the annular convex ring 7.

[0038] The valve cover 2 is detachably covered on the outside of the annular protrusion 7, and the side wall of the valve cover 2 has several exhaust holes 201. The inner top wall of the valve cover 2 is integrally provided with a pressure block 5, which is set corresponding to the protrusion 6 and is positioned relative to the exhaust holes 201.

[0039] The flexible valve diaphragm 3 is placed on the annular sealing ring 4, and one edge of the flexible valve diaphragm 3 is pressed between the pressure block 5 and the boss 6. As the exhaled airflow enters the internal cavity of the valve cover 2 through the inner ring of the annular sealing ring 4, the part of the flexible valve diaphragm 3 near the exhaust port 201 can detach from the annular sealing ring 4 to form an exhaust channel. This allows the airflow entering the internal cavity of the valve cover 2 to be discharged through the exhaust port 201. After the airflow in the internal cavity of the valve cover 2 is discharged, the flexible valve diaphragm 3 automatically adheres to the annular sealing ring 4 under its own elasticity to seal, which can prevent outside air from flowing back into the inner ring of the annular sealing ring 4 through the exhaust port 201.

[0040] The high-efficiency, low-resistance exhaust valve using the above-mentioned technical solution allows the flexible valve diaphragm 3 to detach from the annular sealing ring 4 under the action of exhaled airflow, forming an exhaust channel. After the airflow is discharged, it automatically adheres and seals. This structural design effectively reduces gas flow resistance while ensuring good sealing performance, preventing backflow of external air, and improving the protective effect. In addition, the annular convex ring 7, the boss 6, and other structures work together to enhance the stability of the overall structure and meet the needs of use under complex working conditions.

[0041] Specifically, in this embodiment, the flexible valve diaphragm 3 is a flexible silicone diaphragm or a flexible rubber diaphragm. By using a flexible silicone or flexible rubber diaphragm, the diaphragm 3 possesses excellent flexibility and elasticity, ensuring that it opens and closes flexibly under airflow and is not easily deformed over long-term use. This further improves the sealing performance and service life of the exhaust valve, ensuring stable operation in various environments.

[0042] Specifically, in this embodiment, an annular groove 202 is integrally provided on the inner top wall of the valve cover 2, and an annular convex strip 701 is integrally provided on the outer side of the annular convex ring 7. The annular convex strip 701 can be locked in the annular groove 202. The annular groove 202 on the inner top wall of the valve cover 2 and the annular convex strip 701 on the outer side of the annular convex ring 7 are locked together. This snap-fit ​​connection method makes the installation and disassembly of the valve cover 2 and the annular valve seat 1 more convenient, which facilitates the maintenance and replacement of parts of the exhaust valve in the later stage. At the same time, it also enhances the stability of the connection between the valve cover 2 and the annular valve seat 1, prevents loosening during use, and ensures the stability of the overall structure of the exhaust valve.

[0043] Specifically, in this embodiment, a positioning sleeve 203 is integrally provided on the inner top wall of the valve cover 2, and a positioning rod 401 is integrally provided between the outer ring of the annular sealing retaining ring 4 and the inner ring of the annular convex ring 7. When the valve cover 2 is tightly closed on the outside of the annular convex ring 7, the positioning rod 401 is inserted into the positioning sleeve 203. The added positioning sleeve 203 and positioning rod 401, when the valve cover 2 is tightly closed, further refine the relative position of the valve cover 2 and the annular valve seat 1, avoid misalignment during installation, and enable the pressure block 5 and the boss 6 to accurately press the flexible valve diaphragm 3, ensuring the reliability of the exhaust valve sealing structure. At the same time, it also enhances the vibration and impact resistance of the exhaust valve during use and improves the overall structural stability.

[0044] Specifically, in this embodiment, the positioning sleeve 203 is positioned close to the pressure block 5, and the positioning rod 401 is positioned close to the boss 6. This arrangement further optimizes the assembly structure of the valve cover 2 and the annular valve seat 1, resulting in a more uniform pressing force on the flexible valve diaphragm 3 by the pressure block 5 and the boss 6 during installation. This effectively avoids sealing problems caused by uneven force distribution, further improving the sealing performance and structural stability of the exhaust valve.

[0045] Specifically, in this embodiment, a cross-shaped reinforcing frame 402 is integrally provided on the inner ring of the annular valve seat 1. The cross-shaped reinforcing frame 402 on the inner ring of the annular valve seat 1 significantly enhances the structural strength of the annular valve seat 1, making it less prone to deformation or breakage when subjected to external forces such as axial tension. This improves the stability and durability of the overall structure of the exhaust valve, meets the structural strength requirements in the standard, and extends the service life of the exhaust valve.

[0046] Specifically, in this embodiment, the surface roughness of both the annular sealing ring 4 and the flexible valve diaphragm 3 is no greater than Ra0.1. Limiting the surface roughness of the annular sealing ring 4 and the flexible valve diaphragm 3 to no greater than Ra0.1 effectively reduces the frictional resistance between the airflow and the component surface, lowering air resistance during the exhaust process and allowing for smoother airflow. Simultaneously, the smooth surface also facilitates a tight fit between the flexible valve diaphragm 3 and the annular sealing ring 4, further improving the sealing performance, preventing external contaminants from entering through tiny gaps, and enhancing the protective effect of the exhaust valve.

[0047] In summary, the high-efficiency, low-resistance exhaust valve provided in this embodiment has the following advantages:

[0048] This high-efficiency, low-resistance exhaust valve achieves multiple technological advantages through its unique structural design and component coordination. Regarding gas flow, the cooperation between the flexible valve diaphragm 3 and the annular sealing ring 4 reduces exhaust resistance, ensuring smooth airflow. In terms of sealing performance, the flexible valve diaphragm 3's automatic sealing function effectively prevents backflow of external air, enhancing the protective effect. Regarding structural stability, the annular convex ring 7, the boss 6, and the cross-shaped reinforcing frame 402 work together to enhance overall strength, meeting the standard requirements for structural stability. The snap-fit ​​connection and positioning structure not only facilitates installation, disassembly, and maintenance but also enhances the stability of the connections between components, improving vibration and impact resistance. Furthermore, the flexible valve diaphragm 3 made of specific materials and the low-roughness surface treatment further ensure sealing performance and service life, enabling the exhaust valve to operate stably and reliably in various complex industrial environments.

[0049] Working principle

[0050] The high-efficiency, low-resistance exhaust valve mainly consists of an annular valve seat 1, a valve cover 2, and a flexible valve diaphragm 3. The annular valve seat 1 has an annular convex ring 7 on its inner ring, and an annular sealing ring 4 is set within the annular convex ring 7, with a boss 6 between them. The valve cover 2 is detachably placed on the outside of the annular convex ring 7, with an exhaust hole 201 on its side wall. A pressure block 5 on the inner top wall corresponds to the boss 6 and is positioned opposite the exhaust hole 201. The flexible valve diaphragm 3 rests on the annular sealing ring 4, with one edge pressed tightly by the pressure block 5 and the boss 6. When the user exhales air through the inner ring of the annular sealing ring 4 into the internal cavity of the valve cover 2, the airflow pressure causes the flexible valve diaphragm 3 near the exhaust hole 201 to detach from the annular sealing ring 4, forming an exhaust channel. The airflow is then discharged through the exhaust hole 201. After the airflow is discharged, the flexible valve diaphragm 3 automatically seals itself against the annular sealing ring 4 due to its elasticity, preventing backflow of outside air through the exhaust hole 201 and achieving a one-way exhaust function.

[0051] How to use

[0052] During installation, install the annular valve seat 1 in the corresponding position on the mask or dust / gas respirator. The annular protrusion 701 on the outer side of the annular convex ring 7 interlocks with the annular groove 202 on the inner top wall of the valve cover 2, completing the initial connection between the valve cover 2 and the annular valve seat 1. Simultaneously, the positioning rod 401 is inserted into the positioning sleeve 203 to ensure accurate installation, allowing the pressure block 5 and the boss 6 to accurately press the flexible valve diaphragm 3. Ensure that the part of the flexible valve diaphragm 3 furthest from the pressure block 5 and the boss 6 faces downwards, i.e., ensure the exhaust port 201 faces downwards. This allows for automatic sealing using its own weight. During use, when the user exhales, the airflow drives the flexible valve diaphragm 3 to open and exhaust; when inhaling, the flexible valve diaphragm 3 automatically seals, isolating polluted air from the outside, while air enters through the intake filter on the mask or dust / gas respirator. After use, if maintenance or replacement of parts is required, the flexible valve diaphragm 3 can be inspected and replaced by disassembling the valve cover 2.

[0053] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency, low-resistance exhaust valve, characterized in that, include: The annular valve seat (1), valve cover (2), and flexible valve diaphragm (3) are as follows: The annular valve seat (1) has an integrally formed annular convex ring (7) on its inner ring, and an integrally formed annular sealing ring (4) on its inner ring, and an integrally formed boss (6) between the outer ring of the annular sealing ring (4) and the inner ring of the annular convex ring (7). The valve cover (2) is detachably covered on the outside of the annular protrusion (7), and the side wall of the valve cover (2) has a plurality of exhaust holes (201). The inner top wall of the valve cover (2) is integrally provided with a pressure block (5), which is arranged corresponding to the protrusion (6) and is arranged relative to the exhaust hole (201). The flexible valve diaphragm (3) is placed on the annular sealing ring (4), and one edge of the flexible valve diaphragm (3) is pressed between the pressure block (5) and the boss (6). During the process of the exhaled airflow entering the internal cavity of the valve cover (2) through the inner ring of the annular sealing ring (4), the part of the flexible valve diaphragm (3) near the exhaust hole (201) can detach from the annular sealing ring (4) to form an exhaust channel, so that the airflow entering the internal cavity of the valve cover (2) is finally discharged through the exhaust hole (201). After the airflow in the internal cavity of the valve cover (2) is discharged, the flexible valve diaphragm (3) automatically fits and seals with the annular sealing ring (4) under its own elasticity, which can prevent the outside air from flowing back into the inner ring of the annular sealing ring (4) through the exhaust hole (201).

2. The high-efficiency, low-resistance exhaust valve according to claim 1, characterized in that, The flexible valve diaphragm (3) is a flexible silicone diaphragm or a flexible rubber diaphragm.

3. The high-efficiency, low-resistance exhaust valve according to claim 1, characterized in that, The valve cover (2) has an integrally formed annular groove (202) on its inner top wall, and the annular convex ring (7) has an integrally formed annular convex strip (701) on its outer side surface. The annular convex strip (701) can be locked in the annular groove (202).

4. The high-efficiency, low-resistance exhaust valve according to claim 3, characterized in that, A positioning sleeve (203) is integrally provided on the inner top wall of the valve cover (2). A positioning rod (401) is integrally provided between the outer ring of the annular sealing ring (4) and the inner ring of the annular convex ring (7). When the valve cover (2) is tightly closed on the outside of the annular convex ring (7), the positioning rod (401) is inserted into the positioning sleeve (203).

5. The high-efficiency, low-resistance exhaust valve according to claim 4, characterized in that, The positioning sleeve (203) is positioned close to the pressure block (5), and the positioning rod (401) is positioned close to the boss (6).

6. The high-efficiency, low-resistance exhaust valve according to any one of claims 1-5, characterized in that, The inner ring of the annular valve seat (1) is integrally provided with a cross-shaped reinforcing frame (402).

7. The high-efficiency, low-resistance exhaust valve according to any one of claims 1-5, characterized in that, The surface roughness of the annular sealing ring (4) and the surface roughness of the flexible valve diaphragm (3) are both no greater than Ra0.1.

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