Breather valve sealing mechanism and breather valve

Abstract

The utility model discloses a breather valve sealing mechanism and a breather valve, and belongs to the technical field of breather valves, the breather valve sealing mechanism comprises a valve body, a first through pipe and a second through pipe, the first through pipe and the second through pipe are mounted on the surface of the valve body, an air outlet valve disc matched with an air outlet valve seat for exhausting is arranged in the first through pipe, and a mounting cover plate which is detachably mounted is arranged at the top of the air outlet valve disc; a sealing mechanism matched with the air outlet valve disc is mounted at the top of an inner cavity of the mounting cover plate; a sealing plunger for improving the sealing effect is arranged at the bottom of the air outlet valve disc, and an annular filter piece for dust prevention and exhaust is arranged at the bottom end of the mounting cover plate. An air suction valve disc matched with the air inlet valve seat and used for air inlet is arranged in the second through pipe; according to the breather valve, the sealing effect of the breather valve can be further improved, the inspiration or exhaust smoothness of the breather valve is effectively guaranteed, the use effect of the breather valve is improved, and after the breather valve is damaged, the valve disc structure can be conveniently overhauled, and the maintenance efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of breathing valve technology, specifically to a breathing valve sealing mechanism and a breathing valve. Background Technology

[0002] As a safety accessory for storage tanks, the breather valve functions to reduce the evaporation loss of volatile liquids in atmospheric and low-pressure storage tanks. The breather valve not only maintains the pressure balance within the tank, ensuring protection from damage under overpressure and negative pressure, but also utilizes the tank's own pressure-bearing capacity to reduce the evaporation and loss of the medium inside, playing a crucial role in both safety and environmental protection. However, existing breather valves suffer from poor sealing performance, leading to blockages and impaired air intake or exhaust flow. Furthermore, repairs are inconvenient after damage. Therefore, we need to propose a breather valve sealing mechanism and a breather valve itself. Utility Model Content

[0003] The purpose of this utility model is to provide a breathing valve sealing mechanism and a breathing valve, which can further improve the sealing effect of the breathing valve, effectively ensure the smoothness of the breathing valve's intake or exhaust, improve the breathing valve's performance, and facilitate the repair of the valve disc structure after the breathing valve is damaged, thereby improving maintenance efficiency and solving the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides: a breathing valve sealing mechanism, comprising a valve body and a first through pipe and a second through pipe mounted on the surface of the valve body. The inner cavities of the first through pipe and the second through pipe are respectively provided with an outlet valve seat and an inlet valve seat. The first through pipe has an outlet valve disc that cooperates with the outlet valve seat for exhaust. The top of the outlet valve disc is provided with a detachable mounting cover. The top of the inner cavity of the mounting cover is equipped with a sealing mechanism that cooperates with the outlet valve disc. The bottom of the outlet valve disc is provided with a sealing plunger to improve the sealing effect. The bottom end of the mounting cover is provided with a dustproof and exhaust-proof annular filter. The second through pipe has an intake valve disc that cooperates with the inlet valve seat for intake. Below the intake valve disc is a protective filter disc for intake protection.

[0005] Preferably, the sealing mechanism includes: a mounting sleeve connected to the center position of the mounting cover plate, and a first spring fitted onto the surface of the mounting sleeve; wherein, the top end of the air outlet valve disc is connected to a first valve stem, the top end of the first valve stem is slidably connected to the inner wall of the mounting sleeve, and the bottom end of the first spring is connected to the top of the air outlet valve disc.

[0006] Preferably, the bottom of the exhaust valve disc is provided with a counterweight chamber for auxiliary sealing, and the inner wall of the counterweight chamber is detachably connected with a sealing plunger, the bottom end of which is sealed to the exhaust port of the exhaust valve seat.

[0007] Preferably, the bottom end of the mounting cover is connected to a connecting frame, the annular filter element is movably installed inside the connecting frame, and the inner wall of the first through pipe is provided with an air outlet groove.

[0008] Preferably, a fixed cover plate is detachably installed on the top of the second pipe through a mounting hole, and a second valve stem is connected to the top of the suction valve disc, with the surface of the second valve stem slidably inserted into the interior of the fixed cover plate.

[0009] Preferably, a second spring is fitted on the surface of the second valve stem, and the two ends of the second spring are respectively connected to the inner wall of the fixed cover plate and the surface of the intake valve disc. The protective filter disc is detachably installed outside the intake hole of the intake valve seat.

[0010] On the other hand, this utility model proposes a breathing valve, including the aforementioned breathing valve sealing mechanism.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention utilizes a combination of components including a valve body, a first through pipe, a second through pipe, a mounting cover, an outlet valve disc, a sealing plunger, and a sealing mechanism. Through the cooperation of the sealing plunger and the counterweight chamber, combined with the pressure exerted on the outlet valve disc by the first spring, a double seal is formed between the outlet valve disc and the outlet valve seat: a plunger seal and a valve disc fit. This effectively prevents gas leakage and further improves the sealing and control performance of the breather valve. Similarly, the intake and outlet valve discs operate on the same principle, improving the stability of internal air intake and reducing the evaporation loss of volatile liquids in the storage tank. The removable mounting and fixing covers allow for convenient inspection and maintenance of the valve body's internal structure, ensuring the lifespan of the breather valve. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the valve body of this utility model;

[0015] Figure 3 This is a schematic diagram of the valve body structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the mounting cover structure of this utility model.

[0017] In the diagram: 1. Valve body; 2. First through pipe; 3. Second through pipe; 4. Outlet valve seat; 5. Outlet groove; 6. Mounting cover plate; 7. Mounting sleeve; 8. Outlet valve disc; 9. First valve stem; 10. First spring; 11. Counterweight chamber; 12. Sealing plunger; 13. Connecting frame; 14. Annular filter element; 15. Inlet valve seat; 16. Fixed cover plate; 17. Second valve stem; 18. Inlet valve disc; 19. Second spring; 20. Protective filter disc; 21. Mounting hole. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-4 This utility model provides: a breathing valve sealing mechanism and a breathing valve, including a valve body 1 and a first through pipe 2 and a second through pipe 3 installed on the surface of the valve body 1. The inner cavities of the first through pipe 2 and the second through pipe 3 are respectively provided with an exhaust valve seat 4 and an intake valve seat 15. The inside of the first through pipe 2 is provided with an exhaust valve disc 8 that cooperates with the exhaust valve seat 4 for exhaust. The top of the exhaust valve disc 8 is provided with a detachable mounting cover plate 6. The top of the inner cavity of the mounting cover plate 6 is provided with a sealing mechanism that cooperates with the exhaust valve disc 8. The bottom of the exhaust valve disc 8 is provided with a sealing plunger 12 to improve the sealing effect. The bottom end of the mounting cover plate 6 is provided with a dustproof and exhaust-proof annular filter element 14. The inside of the second through pipe 3 is provided with an intake valve disc 18 that cooperates with the intake valve seat 15 for intake. The bottom of the intake valve disc 18 is provided with a protective filter disc 20 for intake protection.

[0020] It is worth noting that the coordinated arrangement of the valve body 1, the first through pipe 2, the second through pipe 3, the mounting cover plate 6, the exhaust valve disc 8, the sealing plunger 12, and the sealing mechanism can further improve the sealing effect of the breather valve, effectively ensure the smoothness of the breather valve's intake or exhaust, improve the breather valve's performance, and facilitate the repair of the valve disc structure after the breather valve is damaged, thus improving maintenance efficiency.

[0021] Specifically, the sealing mechanism includes: a mounting sleeve 7 connected to the center of the mounting cover plate 6, and a first spring 10 fitted onto the surface of the mounting sleeve 7; wherein, the top end of the exhaust valve disc 8 is connected to a first valve stem 9, the top end of the first valve stem 9 is slidably connected to the inner wall of the mounting sleeve 7, and the bottom end of the first spring 10 is connected to the top of the exhaust valve disc 8. The bottom of the exhaust valve disc 8 is provided with a counterweight chamber 11 for auxiliary sealing, and a sealing plunger 12 is detachably connected to the inner wall of the counterweight chamber 11, the bottom end of the sealing plunger 12 being sealed to the exhaust port of the exhaust valve seat 4.

[0022] Furthermore, the mounting cover plate 6 is a structure for installing the exhaust valve disc 8, the mounting sleeve 7 cooperates with the first valve stem 9 to install the exhaust valve disc 8 and also serves as a guide and limiter, the first spring 10 cooperates with the mounting sleeve 7 to press the exhaust valve disc 8, improving the sealing effect of the bottom of the exhaust valve disc 8 in contact with the exhaust valve seat 4, the sealing plunger 12 is a structure that cooperates with the inner wall of the exhaust valve seat 4 to seal, and the counterweight cavity 11 is a connecting structure for installing the sealing plunger 12.

[0023] The bottom of the mounting cover plate 6 is connected to a connecting frame 13, and the annular filter element 14 is movably installed inside the connecting frame 13. The inner wall of the first pipe 2 is provided with an exhaust groove 5. The connecting frame 13 is a structure for installing the annular filter element 14 and is connected to the surface of the valve body 1. The exhaust groove 5 is used to discharge the gas inside the first pipe 2.

[0024] When exhaust is required, the air pressure pushes the exhaust valve disc 8 upward through the exhaust valve seat 4 of the valve body 1 to form an exhaust channel. When negative pressure intake occurs, the exhaust valve disc 8 will be subjected to gravity, negative pressure and the first spring 10 to improve the sealing effect, while the intake valve disc 18 will be affected by negative pressure and will draw the air filtered by the external protective filter disc 20 into the storage tank connected to the valve body 1 through the intake valve seat 15 to ensure the air pressure balance inside the storage tank.

[0025] A fixed cover plate 16 is detachably installed on the top of the second pipe 3 through the mounting hole 21. A second valve stem 17 is connected to the top of the intake valve disc 18, and the surface of the second valve stem 17 is slidably inserted into the interior of the fixed cover plate 16. A second spring 19 is fitted on the surface of the second valve stem 17, and the two ends of the second spring 19 are respectively connected to the inner wall of the fixed cover plate 16 and the surface of the intake valve disc 18. The protective filter disc 20 is detachably installed outside the intake port of the intake valve seat 15.

[0026] In addition, the mounting hole 21 is a structure for mounting the cover plate 6 and fixing the cover plate 16 by bolt assembly. The structure principle of the intake valve disc 18 and the exhaust valve disc 8 is the same. Similarly, the structure of the fixing cover plate 16 and the mounting cover plate 6 is the same. The protective filter disc 20 filters the air intake of the intake valve seat 15 to ensure the quality of ventilation and prevent impurities from being adsorbed and blocked, which would affect the smooth flow of the breathing valve's intake and exhaust.

[0027] On the other hand, this utility model proposes a breathing valve, including the aforementioned breathing valve sealing mechanism.

[0028] By using the matching structure of the sealing plunger 12 and the counterweight chamber 11, combined with the pressure applied to the outlet valve disc 8 by the first spring 10, a double seal of plunger sealing + valve disc contact can be formed between the outlet valve disc 8 and the outlet valve seat 4, effectively preventing gas leakage and further improving the sealing and control effect of the breather valve; similarly, the structure of the intake valve disc 18 and the outlet valve disc 8 is the same, improving the stability of internal air intake and reducing the evaporation loss of volatile liquids in the storage tank;

[0029] By combining the annular filter element with the outlet groove, and the protective filter disc 20 with the inlet valve seat 15, an external exhaust dust removal channel and an inlet filtration channel can be formed, preventing external pollutants from entering the valve body and effectively reducing the occurrence of blockages. Furthermore, the detachable nature of the mounting cover 6 and the fixing cover 16 allows for convenient inspection and maintenance of the internal structure of the valve body 1, ensuring the service life of the breather valve.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A breather valve sealing mechanism, characterized in that, include: The valve body (1) and the first through pipe (2) and the second through pipe (3) installed on the surface of the valve body (1) are respectively provided with an outlet valve seat (4) and an inlet valve seat (15) in the inner cavity of the first through pipe (2) and the second through pipe (3); The first through pipe (2) is provided with an exhaust valve disc (8) that cooperates with the exhaust valve seat (4) for exhaust. The top of the exhaust valve disc (8) is provided with a detachable mounting cover plate (6). The top of the inner cavity of the mounting cover plate (6) is provided with a sealing mechanism that cooperates with the exhaust valve disc (8). The bottom of the exhaust valve disc (8) is provided with a sealing plunger (12) to improve the sealing effect, and the bottom of the mounting cover plate (6) is provided with a dustproof and exhaust annular filter (14). The second through pipe (3) is provided with an intake valve disc (18) that cooperates with the intake valve seat (15) for intake. Below the intake valve disc (18) is a protective filter disc (20) for intake protection.

2. The breathing valve sealing mechanism according to claim 1, characterized in that: The sealing mechanism includes: The mounting sleeve (7) connected to the center of the mounting cover plate (6), and A first spring (10) fitted onto the surface of the mounting sleeve (7); The top end of the air outlet valve disc (8) is connected to a first valve stem (9), the top end of the first valve stem (9) is slidably connected to the inner wall of the mounting sleeve (7), and the bottom end of the first spring (10) is connected to the top of the air outlet valve disc (8).

3. The breathing valve sealing mechanism according to claim 2, characterized in that: The bottom of the exhaust valve disc (8) is provided with a counterweight chamber (11) for auxiliary sealing. The inner wall of the counterweight chamber (11) is detachably connected with a sealing plunger (12). The bottom end of the sealing plunger (12) is sealed to the exhaust port of the exhaust valve seat (4).

4. The breathing valve sealing mechanism according to claim 1, characterized in that: The bottom end of the mounting cover (6) is connected to a connecting frame (13), and the annular filter element (14) is movably installed inside the connecting frame (13). The inner wall of the first through pipe (2) is provided with an air outlet groove (5).

5. The breathing valve sealing mechanism according to claim 1, characterized in that: The top of the second through pipe (3) is detachably fitted with a fixed cover plate (16) through the mounting hole (21). The top of the suction valve disc (18) is connected to a second valve stem (17), and the surface of the second valve stem (17) is slidably inserted into the inside of the fixed cover plate (16).

6. A breather valve sealing mechanism according to claim 5, characterized in that: The surface of the second valve stem (17) is fitted with a second spring (19), and the two ends of the second spring (19) are respectively connected to the inner wall of the fixed cover plate (16) and the surface of the intake valve disc (18). The protective filter disc (20) is detachably installed outside the intake hole of the intake valve seat (15).

7. A breathing valve, characterized in that: Includes a breather valve sealing mechanism as described in any one of claims 1-6.

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