Pressure relief explosion-proof valve of diving flashlight

Abstract

The utility model discloses a pressure relief explosion-proof valve of a diving flashlight, the pressure relief explosion-proof valve is arranged on a shell of the diving flashlight, the pressure relief explosion-proof valve comprises a valve rod, an O-shaped sealing ring, a compression spring and a spring supporting seat, a first accommodating groove is concavely arranged in the middle of the upper end part of the shell of the diving flashlight, and a first through hole is concavely arranged in the middle of the bottom of the first accommodating groove; the valve rod is embedded in the first through hole in a vertically sliding mode, a valve cover is arranged at the upper end of the valve rod in a protruding mode, gaps between the outer circumferential wall of the valve rod and the inner circumferential wall of the first through hole and between the outer circumferential wall of the valve cover and the inner circumferential wall of the first containing groove form an air channel, the O-shaped sealing ring is arranged at the lower end of the valve cover, and the compression spring is arranged on the valve rod in a sleeving mode. The spring supporting seat is fixed to the lower end of the valve rod, and the compression spring abuts against the inner bottom wall of the second containing groove and the spring supporting seat. According to the technical scheme, explosion caused by too high air pressure in the diving flashlight can be avoided, and the use safety of the diving flashlight is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure relief explosion-proof valves, and particularly relates to a pressure relief explosion-proof valve for a submersible flashlight. Background Art

[0002] With the improvement of the living standards of human beings, the desire to explore the mysterious sea has increased, and diving sports have gradually developed from individual regions to all coastal cities around the world. Since the light at the bottom of the sea is relatively dim, people expect to see clearly everything at the bottom of the sea. Thus, the submersible flashlight came into being.

[0003] Due to the great pressure at the bottom of the water, the performance requirements for submersible flashlights are very high. However, most of the existing submersible flashlights on the market do not have explosion-proof valves. During the use of the submersible flashlight at the bottom of the water, due to the long-term use of the battery, a large amount of gas will be released during the full-load use of the battery, causing the gas in the flashlight to accumulate and the air pressure to rise. When the gas in the flashlight accumulates to a certain level of air pressure, it will cause damage to the battery device or even cause an explosion, causing harm to the user and posing a safety hazard. Content of the Utility Model

[0004] The main purpose of the utility model is to provide a pressure relief explosion-proof valve for a submersible flashlight, aiming to solve the technical problems that the existing submersible flashlights do not have explosion-proof valves, a large amount of gas will be released during the full-load use of the internal battery, causing the gas in the flashlight to accumulate, the air pressure to rise, resulting in damage to the battery device or even causing an explosion, causing harm to the user and posing a safety hazard.

[0005] To achieve the above object, the pressure relief explosion-proof valve for a submersible flashlight proposed by the utility model is provided on the housing of the submersible flashlight. The pressure relief explosion-proof valve includes a valve rod, an O-ring, a compression spring, and a spring support seat. A first accommodation groove is recessed in the middle of the upper end of the housing of the submersible flashlight, and a first through hole is recessed in the middle of the bottom of the first accommodation groove. The valve rod is slidably embedded in the first through hole, and a valve cover protrudes from the upper end of the valve rod. The valve cover is slidably embedded in the first accommodation groove. The gaps between the outer peripheral wall of the valve rod and the inner peripheral wall of the first through hole and between the outer peripheral wall of the valve cover and the inner peripheral wall of the first accommodation groove form a gas path. The O-ring is provided at the lower end of the valve cover, and the O-ring can abut against the inner bottom wall of the first accommodation groove. The O-ring is used to seal the gas path. The compression spring is sleeved on the valve rod, and the spring support seat is detachably fixed to the lower end of the valve rod. A second accommodation groove is recessed in the inner top wall of the housing of the submersible flashlight. The spring support seat is slidably embedded in the second accommodation groove. The upper and lower ends of the compression spring respectively abut against the inner bottom wall of the second accommodation groove and the spring support seat.

[0006] Optionally, it further includes an E-type snap ring. A connecting rod protrudes from the lower end of the valve stem. A second through hole is recessed in the middle of the spring support seat. The connecting rod is disposed through the second through hole. A clamping groove is recessed in the lower end of the connecting rod. The E-type snap ring is detachably clamped in the clamping groove and abuts against the lower end wall of the spring support seat.

[0007] Optionally, a first limiting groove is recessed in the upper end of the spring support seat, and the lower end of the compression spring is embedded in the first limiting groove.

[0008] Optionally, it further includes a lower end cover. A third accommodation groove is recessed in the lower end of the second accommodation groove. The lower end cover is detachably embedded in the third accommodation groove, and the lower end of the valve stem is spaced from the inner bottom wall of the lower end cover.

[0009] Optionally, ventilation holes are respectively recessed on both sides of the lower end wall of the lower end cover.

[0010] Optionally, an external thread is provided on the outer peripheral wall of the lower end cover, and an internal thread is provided on the inner peripheral wall of the third accommodation groove. The external thread of the lower end cover is screwed onto the internal thread of the third accommodation groove.

[0011] Optionally, a second limiting groove is recessed in the lower end wall of the valve cover, and the O-ring is embedded in the second limiting groove.

[0012] Adopting the technical solution of the present utility model has the following beneficial effects: In the technical solution of the present utility model, a first accommodation groove is recessed in the middle of the upper end of the submersible flashlight housing. A first through hole is recessed in the middle of the bottom of the first accommodation groove. The valve rod is slidably embedded in the first through hole. A valve cover protrudes from the upper end of the valve rod. The valve cover is slidably embedded in the first accommodation groove. The gaps between the outer peripheral wall of the valve rod and the inner peripheral wall of the first through hole and between the outer peripheral wall of the valve cover and the inner peripheral wall of the first accommodation groove form an air path. An O-ring is arranged at the lower end of the valve cover, and the O-ring can abut against the inner bottom wall of the first accommodation groove. The O-ring is used to seal the air path. A compression spring is sleeved on the valve rod. The spring support seat is detachably fixed to the lower end of the valve rod. A second accommodation groove is recessed in the inner top wall of the submersible flashlight housing. The spring support seat is slidably embedded in the second accommodation groove. The upper and lower ends of the compression spring respectively abut against the inner bottom wall of the second accommodation groove and the spring support seat. Thus, when the pressure of the gas inside the submersible flashlight acting on the valve cover is greater than the resultant force of the pressure of the external gas (liquid) acting on the valve cover and the elastic force of the compression spring, the valve cover is pushed outwards. At this time, the O-ring is spaced from the inner bottom wall of the first accommodation groove, thus opening the air path. The entire explosion-proof valve is in an unsealed state, and the gas inside the submersible flashlight will be discharged outwards through the air path, ensuring that the inside of the submersible flashlight will not be damaged due to excessive air pressure and will not cause harm to the user, thereby effectively ensuring the safety of using the submersible flashlight. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following-described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0014] Figure 1 FIG. is a schematic diagram of the overall structure of a pressure relief explosion-proof valve of a submersible flashlight according to an embodiment of the present utility model;

[0015] Figure 2 FIG. is a schematic diagram of the overall structure of a pressure relief explosion-proof valve of a submersible flashlight from another perspective according to an embodiment of the present utility model;

[0016] Figure 3 FIG. is an exploded view of a pressure relief explosion-proof valve of a submersible flashlight according to an embodiment of the present utility model;

[0017] Figure 4 FIG. is another exploded view of a pressure relief explosion-proof valve of a submersible flashlight according to an embodiment of the present utility model;

[0018] Figure 5Another exploded structural schematic diagram of a pressure relief explosion-proof valve for a submersible flashlight according to an embodiment of the present invention;

[0019] Figure 6 Partial structural schematic diagram of a pressure relief explosion-proof valve for a submersible flashlight according to an embodiment of the present invention.

[0020] The realization of the purpose, functional features and advantages of the present invention will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0023] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of the technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0024] The present invention provides a pressure relief explosion-proof valve for a submersible flashlight.

[0025] As Figures 1 to 6As shown in the figure, in an embodiment of the present utility model, the pressure relief and explosion-proof valve is arranged on the submersible flashlight housing 101. The pressure relief and explosion-proof valve includes a valve stem 102, an O-ring 103, a compression spring 104, and a spring support seat 105. A first accommodation groove 1011 is recessed in the middle of the upper end of the submersible flashlight housing 101, and a first through hole 1012 is recessed in the middle of the bottom of the first accommodation groove 1011. The valve stem 102 is slidably embedded in the first through hole 1012. A valve cover 1021 protrudes from the upper end of the valve stem 102, and the valve cover 1021 is slidably embedded in the first accommodation groove 1011. A gas path is formed by the gaps between the outer peripheral wall of the valve stem 102 and the inner peripheral wall of the first through hole 1012 and between the outer peripheral wall of the valve cover 1021 and the inner peripheral wall of the first accommodation groove 1011. The O-ring 103 is arranged at the lower end of the valve cover 1021, and the O-ring 103 can abut against the inner bottom wall of the first accommodation groove 1011. The O-ring 103 is used to seal the gas path. The compression spring 104 is sleeved on the valve stem 102. The spring support seat 105 is detachably fixed to the lower end of the valve stem 102. A second accommodation groove 1013 is recessed in the inner top wall of the submersible flashlight housing 101, and the spring support seat 105 is slidably embedded in the second accommodation groove 1013. The upper and lower ends of the compression spring 104 respectively abut against the inner bottom wall of the second accommodation groove 1013 and the spring support seat 105.

[0026] Specifically, it further includes an E-type snap ring 106. A connecting rod 1022 protrudes from the lower end of the valve stem 102. A second through hole 1051 is recessed in the middle of the spring support seat 105. The connecting rod 1022 is arranged through the second through hole 1051. A clamping groove 1023 is recessed in the lower end of the connecting rod 1022. The E-type snap ring 106 is detachably clamped in the clamping groove 1023, and the E-type snap ring 106 abuts against the lower end wall of the spring support seat 105, making the installation between the spring support seat and the valve stem more convenient and fast.

[0027] Specifically, a first limiting groove 1052 is recessed in the upper end of the spring support seat 105, and the lower end of the compression spring 104 is embedded in the first limiting groove 1052 to prevent the compression spring from skewing.

[0028] Specifically, it further includes a lower end cover 107. A third accommodation groove 1014 is recessed in the lower end of the second accommodation groove 1013. The lower end cover 107 is detachably embedded in the third accommodation groove 1014, and the lower end of the valve stem 102 is spaced from the inner bottom wall of the lower end cover 107.

[0029] Specifically, air holes 1071 are respectively recessed on both sides of the lower end wall of the lower end cover 107 to facilitate the discharge of the gas inside the submersible flashlight.

[0030] Specifically, an external thread 1072 is provided on the outer peripheral wall of the lower end cap 107, and an internal thread (not shown) is provided on the inner peripheral wall of the third accommodating groove 1014. The external thread of the lower end cap 107 is screwed onto the internal thread of the third accommodating groove 1014, facilitating the installation and removal of the lower end cap.

[0031] Specifically, it further includes a battery negative spring 108. The battery negative spring 108 is disposed inside the submersible flashlight housing 101 and is used to abut against the negative electrode of the battery inside the submersible flashlight.

[0032] Specifically, a second limiting groove 1024 is recessed on the lower end wall of the valve cover 1021, and the O-ring 103 is embedded in the second limiting groove 1024 to play a role in limiting the O-ring.

[0033] The working principle and process of the present utility model are as follows:

[0034] 1. When the pressure of the gas inside the submersible flashlight acting on the valve cover is less than the resultant force of the pressure of the external gas (liquid) acting on the valve cover and the elastic force of the compression spring, the O-ring abuts against the inner bottom wall of the first accommodating groove, thereby sealing the gas path. At this time, the entire explosion-proof valve is in a sealed state, and the submersible flashlight is in a sealed and waterproof state. The external gas (liquid) cannot enter the submersible flashlight through the explosion-proof valve.

[0035] 2. When the pressure of the gas inside the submersible flashlight acting on the valve cover is greater than the resultant force of the pressure of the external gas (liquid) acting on the valve cover and the elastic force of the compression spring, the valve cover is pushed outwards. At this time, the O-ring is connected to the inner bottom wall of the first accommodating groove at an interval, thereby opening the gas path. The entire explosion-proof valve is in an unsealed state, and the gas inside the submersible flashlight will be discharged outwards through the gas path, ensuring that the inside of the submersible flashlight will not be damaged due to excessive air pressure and will not cause harm to the user, thereby effectively ensuring the safety of using the submersible flashlight.

[0036] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made under the inventive concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.

Claims

1. A pressure relief explosion-proof valve for a diving torch, characterized in that: The pressure relief and explosion-proof valve is arranged on the housing of the diving flashlight, and the pressure relief and explosion-proof valve includes a valve stem, an O-ring, a compression spring and a spring support seat. A first accommodating groove is recessed in the middle of the upper end of the housing of the diving flashlight, and a first through hole is recessed in the middle of the bottom of the first accommodating groove. The valve stem can be slidably embedded in the first through hole up and down, and a valve cover is protruding from the upper end of the valve stem. The valve cover can be slidably embedded in the first accommodating groove up and down. The outer peripheral wall of the valve stem and the inner peripheral wall of the first through hole and the outer peripheral wall of the valve cover and the first accommodating groove are connected. An air path is formed in the gap between the inner circumferential walls, the O-ring is arranged at the lower end of the valve cover, and the O-ring can abut against the inner bottom wall of the first accommodating groove, the O-ring is used to close the air path, the compression spring is sleeved on the valve stem, the spring support seat is detachably fixed to the lower end of the valve stem, the inner top wall of the diving flashlight housing is recessed with a second accommodating groove, the spring support seat can be slidably embedded in the second accommodating groove up and down, and the upper and lower ends of the compression spring are respectively abutted against the inner bottom wall of the second accommodating groove and the spring support seat.

2. The submersible torch pressure relief explosion-proof valve according to claim 1, characterized in that: It also includes an E-type retaining ring, a connecting rod is protruding from the lower end of the valve stem, a second through hole is recessed in the middle of the spring support seat, the connecting rod is inserted into the second through hole, a retaining groove is recessed at the lower end of the connecting rod, the E-type retaining ring is detachably retaining in the retaining groove, and the E-type retaining ring abuts against the lower end wall of the spring support seat.

3. The submersible torch pressure relief explosion-proof valve according to claim 1, characterized in that: The upper end portion of the spring support seat is concavely provided with a first limiting groove, and the lower end portion of the compression spring is embedded in the first limiting groove.

4. The submersible torch pressure relief explosion-proof valve according to claim 1, characterized in that: It also includes a lower end cover, a third accommodating groove is recessed at the lower end of the second accommodating groove, the lower end cover is detachably embedded in the third accommodating groove, and the lower end of the valve stem is spaced apart and connected to the inner bottom wall of the lower end cover.

5. The submersible torch pressure relief explosion-proof valve according to claim 4, characterized in that: A vent hole is respectively recessed on both sides of the lower end wall of the lower end cover.

6. The submersible torch pressure relief explosion-proof valve according to claim 4, characterized in that: The outer peripheral wall of the lower end cover is provided with an external thread, the inner peripheral wall of the third containing groove is provided with an internal thread, and the external thread of the lower end cover is screwed onto the internal thread of the third containing groove.

7. The submersible torch pressure relief explosion-proof valve according to claim 1, characterized in that: A second limiting groove is recessed on the lower end wall of the valve cover, and the O-ring is embedded in the second limiting groove.

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