A safety explosion-proof valve

Abstract

The utility model discloses a safety explosion-proof valve, including an outer shell body, the outer shell body having a centrally located air vent, a step in the middle of the air vent; a flap pressed against the step, one end of the flap being pivotally connected to the outer shell body through a pivot, and the other end being connected to the bottom of the air vent through a tension spring, and an opening for conducting the air vent is provided in the center of the flap, and a breathable membrane is welded to the opening; a protective cover fixed to the upper end of the outer shell body, the protective cover and the flap are spaced apart, and a pressure relief hole is provided around the protective cover. The utility model realizes rapid opening of the valve through the flap, instantly releasing the pressure, achieving the effect of rapid pressure relief to ensure safety, and at the same time, the breathable membrane can be ventilated and pressure relieved when the normal pressure in the product space increases slowly, and has a wide range of applications and strong practicality.

Description

Technical Field

[0001] The utility model belongs to the technical field of explosion-proof valves, and in particular relates to a safety explosion-proof valve. Background Art

[0002] The waterproof and dustproof protection level of the housing of electronic and electrical equipment such as outdoor electrical control boxes, energy storage battery boxes, and new energy vehicle power battery packs is generally required to meet the national standard GB 4208-2008 "Enclosure Protection Level" (IP Code) IP67 or above. Therefore, it is required to be sealed, but electronic and electrical components will generate heat during operation, causing the air in the sealed container to expand due to the temperature rise. If it cannot be discharged in time, the pressure in the box will continue to increase, especially for sealed boxes with components such as batteries and large capacitors or containers for storing flammable and explosive chemicals. When the batteries, capacitors or chemicals inside are thermally runaway, high temperature and high pressure will be generated, which will generate huge pressure in the box and there is a risk of violent explosion. Therefore, an explosion-proof valve is needed to prevent explosion and reduce the damage caused by the explosion.

[0003] Existing explosion-proof valves are generally designed with a sealed valve core, that is, when the air pressure gradually decreases or becomes relatively low, the opening height of the valve core will become smaller or even closed, which can easily lead to a slower discharge and pressure relief speed of the gas in the container, and cause the gas in the box to not be fully discharged, directly affecting the pressure relief and explosion-proof effect. In addition, the structure is complex, the cost is expensive, and the applicability is poor.

[0004] Therefore, there is an urgent need for an explosion-proof valve with simple structure, easy use and high safety factor. Utility Model Content

[0005] In view of this, the technical problem to be solved by the utility model is to provide a safety explosion-proof valve, which is used to avoid the troubles of the previous explosion-proof valves with complex structure, high cost and insensitive explosion-proof pressure relief.

[0006] In order to solve the above technical problems, the utility model discloses a safety explosion-proof valve, comprising:

[0007] The outer shell cover body has a centrally located air permeable channel, and a step is provided in the middle of the air permeable channel;

[0008] A flap is pressed against the step, one end of the flap is pivotally connected to the housing cover through a pivot, and the other end is connected to the bottom of the air vent through a tension spring, and an opening for conducting the air vent is provided in the center of the flap, and a breathable membrane is welded to the opening;

[0009] A protective cover is fixed to the upper end of the outer shell body, the protective cover is spaced from the flap, and a pressure relief hole is provided around the protective cover.

[0010] According to an embodiment of the utility model, a sealing gasket is provided at the bottom of the shell cover.

[0011] According to an embodiment of the utility model, the edge of the step has an embedded sealing ring, and the sealing ring is pressed by the flap.

[0012] According to an embodiment of the present invention, the two ends of the shell cover have extending bracket parts, and the bracket parts have screw mounting holes.

[0013] According to an embodiment of the utility model, the flap and the outer shell cover both have branches extending into the air vent, and the branches are arranged opposite to each other on the left and right sides for installing tension springs.

[0014] According to one embodiment of the utility model, the above-mentioned breathable membrane is configured as a PTFE membrane.

[0015] Compared with the prior art, the utility model can obtain the following technical effects:

[0016] 1. When the normal pressure of the product space increases slowly, the explosion-proof valve can be used for ventilation and pressure relief through the breathable membrane (waterproof, dustproof, breathable, and reagent-resistant);

[0017] 2. When the pressure inside the product space increases instantly, the explosion-proof valve can be quickly opened to release the pressure instantly, achieving rapid pressure relief to ensure safety.

[0018] 3. When the pressure in the product space is released to the normal safety value, the valve of the explosion-proof valve returns to its original position and seals;

[0019] 4. The explosion-proof valve can work repeatedly.

[0020] Of course, any product implementing the present utility model does not necessarily need to achieve all of the above-mentioned technical effects at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0022] Figure 1 This is an internal view of the safety explosion-proof valve of the embodiment of the utility model;

[0023] Figure 2 It is a three-dimensional diagram of a safety explosion-proof valve according to an embodiment of the utility model.

[0024] Figure ID

[0025] The outer shell 10 , the air vent 11 , the step 12 , the flap 20 , the pivot 30 , the tension spring 40 , the air permeable membrane 50 , the protective cover 60 , the pressure relief hole 70 , the sealing gasket 80 , the sealing ring 90 , the bracket part 100 , the screw mounting hole 110 , and the branch part 120 . DETAILED DESCRIPTION

[0026] The following will describe the implementation methods of the present invention in detail with reference to the accompanying drawings and embodiments, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0027] Please refer to Figure 1 and Figure 2 , Figure 1 This is an internal view of the safety explosion-proof valve of the embodiment of the utility model; Figure 2 It is a three-dimensional diagram of a safety explosion-proof valve according to an embodiment of the utility model.

[0028] As shown in the figure, a safety explosion-proof valve includes: an outer shell cover 10, the outer shell cover 10 has an air vent 11 located in the center, and the middle of the air vent 11 has a step 12; a flap 20 pressed on the step 12, one end of the flap 20 is pivotally connected to the outer shell cover 10 through a pivot 30, and the other end is connected to the bottom of the air vent 11 through a tension spring 40, and an opening that conducts the air vent 11 is provided in the center of the flap 20, and a breathable membrane 50 is welded to the opening; a protective cover 60 fixed to the upper end of the outer shell cover 10, the protective cover 60 is spaced apart from the flap 20, and a pressure relief hole 70 is provided around the protective cover 60.

[0029] In one embodiment of the utility model, the housing 10 is through from top to bottom, and a ventilation hole 11 is provided in the center, and a step 12 is provided in the middle of the ventilation hole 11. The flap 20 is installed on the step 12 to play a pressing role, and the flap 20 is used to cover the hole at the sealing step 12 through the pivot 30 and the tension spring 40. Specifically, one end of the flap 20 is pivoted by the pivot 30 so that the flap 20 can be turned over, and the tension spring 40 is installed at the other end relative to the pivot 30. The tension spring 40 is designed obliquely to the lower end of the pivot 30 to close the flap 20 in the shape of a handle. When the bottom air pressure is sufficient, the flap 20 can be lifted up to release pressure.

[0030] In addition, an opening is made in the middle area of ​​the flap 20, and a breathable membrane 50 is sealed and welded at the opening, so as to allow ventilation and pressure relief when the normal pressure in the product space increases slowly, which is highly practical.

[0031] The protective cover 60 is installed on the upper end of the outer shell body 10 for covering and protection, and a pressure relief hole 70 is arranged around it to communicate with the air permeable membrane 50 to achieve air release.

[0032] Preferably, a sealing gasket 80 is provided at the bottom of the outer shell cover 10 to ensure sealing during installation of the explosion-proof valve.

[0033] In addition, a sealing ring 90 is embedded in the edge of the step 12 , and the sealing ring 90 is pressed by the flap 20 to ensure the sealing performance after the flap 20 is pressed.

[0034] The two ends of the outer shell cover 10 of the utility model are provided with extended bracket parts 100, and the bracket parts 100 have screw mounting holes 110, which are convenient for mounting and fixing the explosion-proof valve.

[0035] Furthermore, both the flap 20 and the outer shell cover 10 have branches 120 extending into the air vent 11 , and the branches 120 are arranged opposite to each other on the left and right sides and are used to install the tension spring 40 , which has a simple structure and is easy to install.

[0036] The breathable membrane 50 is configured as a PTFE membrane, which has good waterproof and breathable effects.

[0037] In summary, the utility model realizes rapid opening of the valve through the flap 20, releases the pressure instantly, and achieves the effect of rapid pressure relief to ensure safety. At the same time, the breathable membrane 50 can be ventilated and pressure relieved when the normal pressure in the product space slowly increases. It has wide application and strong practicality.

[0038] The above description shows and describes several preferred embodiments of the utility model, but as mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A safety explosion-proof valve, characterized in that: include: An outer shell cover, wherein the outer shell cover has a centrally located air permeable channel, and a step is provided in the middle of the air permeable channel; A flap pressed against the step, one end of the flap being pivotally connected to the housing cover through a pivot, and the other end being connected to the bottom of the air vent through a tension spring, and an opening for conducting the air vent is provided in the center of the flap, and a breathable membrane is welded to the opening; A protective cover is fixed to the upper end of the outer shell body, the protective cover is spaced apart from the flap, and a pressure relief hole is provided around the protective cover.

2. The safety explosion-proof valve according to claim 1, characterized in that: A sealing gasket is arranged at the bottom of the shell cover.

3. The safety explosion-proof valve according to claim 1, characterized in that: The step edge has an embedded sealing ring, and the sealing ring is pressed by the flap.

4. The safety explosion-proof valve according to claim 1, characterized in that: The two ends of the shell cover body are provided with extended bracket parts, and the bracket parts are provided with screw mounting holes.

5. The safety explosion-proof valve according to claim 1, characterized in that: The flap and the outer shell cover both have branches extending into the air-permeable channel, and the branches are arranged opposite to each other on the left and right sides and are used to install the tension spring.

6. The safety explosion-proof valve according to claim 1, characterized in that: The air permeable membrane is configured as a PTFE membrane.

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