A spring-loaded waterproof, breathable, and explosion-proof valve

Abstract

This utility model discloses a spring-loaded waterproof, breathable, and explosion-proof valve, relating to the field of explosion-proof valve technology. It includes a valve body with a piston and guide rod internally mounted and fixedly connected. A spring plate with support feet at both ends is fitted over the guide rod. Symmetrical grooves are cut on the end faces of the valve body. When the spring plate deforms under force, the support feet slide within the grooves and abut against the guide rod. The piston and guide rod are connected via a threaded post and an internal threaded hole. An outer sealing ring and an inner sealing ring are embedded in the edges of the valve body to improve sealing. A pressure ring is engaged inside the piston, and a diaphragm connects the pressure ring and the piston. A top cover is connected to the end of the piston away from the guide rod, and an iron sheet connects the top cover and the pressure ring. A vent gap is reserved between the edge of the top cover and the valve body. This explosion-proof valve achieves waterproof and breathable functions, and can promptly release pressure in case of abnormal pressure. It has a reasonable structure and strong practicality.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof valve technology, and in particular to a spring-loaded waterproof and breathable explosion-proof valve. Background Technology

[0002] Currently, some explosion-proof valves on the market use helical springs as the core elastic component to adjust the sealing and pressure relief functions through spring deformation.

[0003] However, helical springs have obvious drawbacks: First, the manufacturing process is complex, especially for helical springs that meet high precision and special specifications, which require specialized equipment and processes, resulting in higher overall costs; second, they occupy a large axial space, making them difficult to arrange flexibly in scenarios with compact internal space, thus limiting the application range of explosion-proof valves; third, the installation process requires specific tools and methods to ensure accurate installation position and adequate preload, making the operation more complex and increasing assembly difficulty and time costs. Utility Model Content

[0004] To address the technical problems existing in the background art, this utility model proposes a spring-loaded waterproof, breathable, and explosion-proof valve.

[0005] This utility model proposes a spring-loaded waterproof, breathable, and explosion-proof valve, comprising a valve body, a piston movably disposed inside the valve body, and a guide rod movably disposed inside the valve body. The piston is fixedly connected to the guide rod, and a spring plate is sleeved on the outside of the guide rod. Support feet are integrally connected to both ends of the spring plate. Grooves are symmetrically formed on the end face of the valve body. When the spring plate is deformed under force, the support feet slide inside the grooves, and the spring plate abuts against the guide rod.

[0006] Furthermore, a threaded post is connected to the end face of the piston facing the guide rod, and an internal threaded hole is opened at the end of the guide rod facing the piston, with the threaded post connected to the internal threaded hole.

[0007] Furthermore, an outer sealing ring is embedded in the edge of the valve body facing the guide rod to improve the sealing between the valve body and the product.

[0008] Furthermore, an inner sealing ring is embedded in the side edge of the valve body facing the piston to improve the sealing performance between the valve body and the piston.

[0009] Furthermore, a pressure ring is internally engaged and fixed to the piston, and a diaphragm is fixedly connected between the pressure ring and the piston.

[0010] Furthermore, the piston's end face away from the guide rod is fixedly connected to the upper cover, and an iron sheet is fixedly connected between the upper cover and the pressure ring.

[0011] Furthermore, an air vent gap is provided between the edge of the top cover and the valve body.

[0012] The beneficial effects of this utility model are as follows: By using a spring sheet instead of a traditional helical spring as the core elastic component, the manufacturing process is simplified, and production can be carried out without special equipment and complex processes, significantly reducing the overall cost. It can also effectively reduce the axial space occupation, adapt to the use scenarios with compact internal space of the product, and broaden the application range of the explosion-proof valve. At the same time, the installation method of the spring sheet in conjunction with the guide rod, groove and other structures is simpler, and assembly can be completed without special tools to ensure that the pre-tightening force meets the standard, reducing the assembly difficulty and time cost. Moreover, through the synergistic effect of spring sheet deformation, inner and outer sealing ring sealing and diaphragm ventilation, waterproof, breathable and explosion-proof functions can be stably achieved, improving practicality and reliability while taking into account economy and space adaptability. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the disassembled structure of this utility model; Figure 2 This is a schematic diagram of the valve body and spring plate in this utility model; Figure 3 This is a schematic diagram of the assembly structure of this utility model; Figure 4 This is a half-sectional view of the assembled version of this utility model.

[0014] In the diagram: 1. Top cover; 2. Iron sheet; 3. Pressure ring; 4. Diaphragm; 5. Piston; 51. Threaded column; 6. Inner sealing ring; 7. Valve body; 71. Groove; 72. Mounting hole; 8. Outer sealing ring; 9. Spring plate; 91. Support foot; 10. Guide rod; 101. Internal threaded hole. Detailed Implementation

[0015] Reference Figures 1-4 The present invention proposes a spring-loaded waterproof and breathable explosion-proof valve, including a valve body 7. The valve body 7 has symmetrical mounting holes 72 on its end face. The mounting holes 72 are the key structure for connecting the explosion-proof valve with the customer's product. In the actual installation process, the staff fixes the explosion-proof valve to the preset installation position of the customer's product through the mounting holes 72 and completes the locking operation with screws and other fasteners. The valve body 7 has an outer sealing ring 8 embedded in the edge facing the customer's product. When the screw is tightened, the outer sealing ring 8 will deform under pressure and fit tightly between the valve body 7 and the contact surface of the customer's product. This effectively prevents external moisture, dust and other impurities from entering the customer's product, ensuring the sealing performance of the connection between the explosion-proof valve and the customer's product, and laying the foundation for the subsequent waterproof and explosion-proof functions. The valve body 7 has a piston 5 and a guide rod 10 inside, which are fixedly connected by a specific structure. Specifically, the end face of the piston 5 facing the guide rod 10 is integrally connected with a threaded post 51, and the end of the guide rod 10 facing the piston 5 is provided with an internal threaded hole 101. During installation, the threaded post 51 is screwed into the internal threaded hole 101 to complete the stable connection between the piston 5 and the guide rod 10. A spring plate 9 is sleeved on the outside of the guide rod 10. The two ends of the spring plate 9 are integrally connected to support feet 91, and the support feet 91 are embedded in the grooves 71 opened on the end face of the valve body 7. After the piston 5 and the guide rod 10 are assembled, the degree of compression of the spring plate 9 by the guide rod 10 can be changed by adjusting their relative positions, so that the spring plate 9 deforms and generates a preload. At the same time, an inner sealing ring 6 is embedded in the edge of the valve body 7 facing the piston 5. The preload generated by the spring plate 9 will act on the piston 5, pushing the piston 5 to press tightly against the inner sealing ring 6, so that the inner sealing ring 6 fully fits the contact surface between the piston 5 and the valve body 7, and finally achieves the sealing of the entire explosion-proof valve, effectively preventing gas leakage inside the customer's product, and preventing external liquid intrusion. The piston 5 is internally engaged with a pressure ring 3, and a diaphragm 4 is fixedly connected between the pressure ring 3 and the piston 5. When the internal pressure of the customer's product is within the normal range, the diaphragm 4 allows a small amount of gas inside the product to exchange with the outside through its own pores, thereby achieving a breathable function and preventing the pressure inside the product from slowly increasing due to gas accumulation. At the same time, it can block external moisture from entering the product through the breathable channel, thus achieving both breathability and waterproofing. The piston 5 is fixedly connected to the end face away from the guide rod 10 with an upper cover 1. An iron sheet 2 is fixedly connected between the upper cover 1 and the pressure ring 3. The iron sheet 2 can enhance the structural strength of the connection between the piston 5 and the upper cover 1 and prevent the piston 5 from deforming or being damaged during the stress process. An air vent gap is reserved between the edge of the upper cover 1 and the valve body 7. This gap is the channel for pressure release.

[0016] When the internal pressure of a customer's product rises sharply due to a malfunction or other reasons, and the pressure difference between the inside and outside reaches a certain threshold, the high-pressure airflow will exert an impact force on the piston 5. When the impact force is greater than the preload of the spring plate 9, the piston 5 will move away from the inner sealing ring 6 under the push of the airflow, and at the same time drive the guide rod 10 to move synchronously. At this time, the support foot 91 of the spring plate 9 will slide along the set trajectory in the groove 71. The spring plate 9 will further deform to adapt to the displacement of the piston 5. As the piston 5 moves, the vent gap between the top cover 1 and the valve body 7 gradually widens, and the high-pressure gas inside the customer's product is quickly discharged through the vent gap to achieve pressure relief operation and avoid the risk of explosion due to excessive internal pressure.

[0017] When the internal pressure of the customer's product drops to a safe range, the preload of the spring plate 9 will push the guide rod 10 to reset, thereby driving the piston 5 back to its initial position, re-tightening the inner sealing ring 6, so that the explosion-proof valve can return to a sealed state and continue to perform its waterproof and breathable functions, ensuring the continuous and stable operation of the customer's product.

[0018] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A spring-loaded, waterproof, breathable, and explosion-proof valve, comprising a valve body (7), characterized in that, A piston (5) is movably disposed inside the valve body (7), and a guide rod (10) is also movably disposed inside the valve body (7). The piston (5) is fixedly connected to the guide rod (10), and a spring plate (9) is sleeved on the outside of the guide rod (10). Support feet (91) are integrally connected to both ends of the spring plate (9). Grooves (71) are symmetrically opened on the end face of the valve body (7). When the spring plate (9) is deformed under force, the support feet (91) slide inside the groove (71), and the spring plate (9) abuts against the guide rod (10).

2. The spring-loaded waterproof, breathable, and explosion-proof valve according to claim 1, characterized in that, The piston (5) is connected to the end face of the guide rod (10) with a threaded post (51). The guide rod (10) has an internal threaded hole (101) at one end facing the piston (5). The threaded post (51) is connected to the internal threaded hole (101).

3. The spring-loaded waterproof, breathable, and explosion-proof valve according to claim 1, characterized in that, An outer sealing ring (8) is embedded in the edge of the valve body (7) facing the guide rod (10) to improve the sealing between the valve body (7) and the product.

4. The spring-loaded waterproof, breathable, and explosion-proof valve according to claim 1, characterized in that, The valve body (7) has an inner sealing ring (6) embedded in one edge facing the piston (5) to improve the sealing between the valve body (7) and the piston (5).

5. The spring-loaded waterproof, breathable, and explosion-proof valve according to claim 1, characterized in that, The piston (5) has a pressure ring (3) locked inside, and a diaphragm (4) is fixedly connected between the pressure ring (3) and the piston (5).

6. The spring-loaded waterproof, breathable, and explosion-proof valve according to claim 5, characterized in that, The piston (5) is fixedly connected to the upper cover (1) at the end face away from the guide rod (10), and the upper cover (1) and the pressure ring (3) are fixedly connected to the iron sheet (2).

7. The spring-loaded waterproof, breathable, and explosion-proof valve according to claim 6, characterized in that, An air vent gap is reserved between the edge of the top cover (1) and the valve body (7).

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