A pressure relief valve and alarm

Abstract

The utility model discloses a kind of pressure relief valve and alarm, pressure relief valve includes valve body, valve cover and waterproof air-permeable membrane;Several air holes are equipped on valve cover;The waterproof air-permeable membrane is attached to the inner wall of valve cover;One circle of rim wall is equipped in the one end of valve body, the other end of valve body is equipped with pressure relief pipe, the center axis of valve body is equipped with through hole, the through hole is directly through the head of pressure relief pipe;Valve body and valve cover are airtight connection.The utility model pressure relief valve can make the pressure difference balance inside and outside closed box.

Description

Technical Field

[0001] This utility model relates to the field of pressure relief valve technology, and in particular to a pressure relief valve and an alarm. Background Technology

[0002] A waterproof case is a common outdoor device. Its excellent waterproof performance ensures a well-sealed, self-contained internal space. Because the case is inherently sealed, a pressure difference exists between the inside and outside of the case if it remains unopened for an extended period, making it difficult to open.

[0003] Therefore, the aforementioned technical problems need to be solved. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model proposes a pressure relief valve and an alarm to balance the pressure difference between the inside and outside of the sealed box.

[0005] To solve the above-mentioned technical problems, the basic technical solution proposed by this utility model is as follows:

[0006] A pressure relief valve includes a valve body, a valve cover, and a waterproof and breathable membrane; the valve cover has several vent holes; the waterproof and breathable membrane is attached to the inner wall of the valve cover; one end of the valve body has a rim wall, the other end of the valve body has a pressure relief pipe, and the valve body has a through hole in the central axis, which leads directly to the head of the pressure relief pipe; the valve body and the valve cover are sealed together.

[0007] Furthermore, the inner wall of the valve cover top is provided with a sealing edge, and the space between the sealing edge and the cover edge of the valve cover forms a sealing groove; the edge wall of the valve body is assembled in the sealing groove.

[0008] Furthermore, the inner wall of the valve cover edge is provided with a first buckle, and the outer side of the valve body edge wall is provided with a groove, and the first buckle engages with the groove.

[0009] Furthermore, the waterproof and breathable membrane comprises a three-layer structure, consisting of a waterproof adhesive layer, a breathable membrane layer, and a waterproof adhesive layer from top to bottom.

[0010] An alarm device includes a housing, a controller, a buzzer, and any of the aforementioned pressure relief valves; the controller is assembled inside the housing; the housing has a pressure relief hole; the pressure relief pipe of the pressure relief valve is assembled in the pressure relief hole; a support flange is provided on the flange side of the valve body, and a through hole is located inside the support flange; the buzzer is engaged between the support flange and the sealing flange, and the buzzer is also connected to the controller via a wire.

[0011] Furthermore, an L-shaped groove is provided on the inner edge of the sealing edge, and one end face of the buzzer is fitted into the L-shaped groove.

[0012] Furthermore, the pressure relief pipe is provided with external threads, and the pressure relief hole is provided with internal threads.

[0013] Furthermore, the top of the pressure relief pipe is provided with a second retractable buckle, the diameter of which is larger than the diameter of the pressure relief hole.

[0014] Furthermore, a waterproof rubber ring is provided between the pressure relief pipe and the pressure relief hole.

[0015] Furthermore, the controller integrates a gyroscope, which is used to detect the tilt angle and send an alarm signal to the controller when a preset tilt angle occurs; the controller is used to control the buzzer to emit an alarm sound according to the alarm signal.

[0016] The beneficial effects of this invention are as follows: By attaching a waterproof and breathable membrane to the inner wall of the valve cover, it allows for both air permeability and waterproofing. Therefore, after the pressure relief valve is assembled onto the sealed waterproof box, high-pressure gas inside the box can enter the valve through the pressure relief pipe and then be discharged to the outside through the waterproof and breathable membrane. Alternatively, outside gas can enter the box through the waterproof and breathable membrane, balancing the pressure difference inside and outside the waterproof box, thus easily opening the box while preventing outside water from entering. Furthermore, the inner wall of the valve cover top has a sealing edge protruding from the inner wall. This sealing edge forms a sealing groove with the edge of the valve cover, providing even better waterproofing between the valve cover and the valve body, preventing outside water from entering the valve body. A buzzer is installed in the pressure relief valve. When the controller detects an abnormality, it can control the buzzer to sound an alarm, giving the alarm not only a pressure relief function but also an alarm function. Attached Figure Description

[0017] Figure 1 This is an overall schematic diagram of Embodiment 1 of the pressure relief valve;

[0018] Figure 2 and Figure 3 This is an exploded view of Embodiment 1 of the pressure relief valve;

[0019] Figure 4 This is a structural diagram of a waterproof and breathable membrane;

[0020] Figure 5 This is a cross-sectional view of Embodiment 1 of the pressure relief valve;

[0021] Figure 6 This is an exploded view of Embodiment 2 of the pressure relief valve;

[0022] Figure 7 This is a cross-sectional view of Embodiment 2 of the pressure relief valve;

[0023] Figure 8 This is a schematic diagram of the overall structure of the alarm device in Embodiment 1;

[0024] Figure 9 This is an assembly diagram of the alarm device embodiment one and the waterproof box;

[0025] Figure 10 This is a partial structural diagram of the alarm system in Embodiment 1;

[0026] Figure 11 for Figure 9 Cross-sectional view. Detailed Implementation

[0027] The following will be combined with the appendix Figure 1 To be continued Figure 11 The technical solutions in the embodiments of this utility model are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0028] It should be noted that, in the embodiments of this utility model, the directions shown in the accompanying drawings shall prevail, such as front and back. Figure 1 For the sake of accuracy, the specific details should be as follows: Figure 1 The left side is the front. Figure 1 The right side is the rear; at the same time, as Figure 2 As shown, the horizontal direction is roughly defined as left and right, and the vertical direction is defined as up and down. If a specific orientation changes, the directional indication will also change accordingly.

[0029] Please refer to Figure 1-3 The pressure relief valve has an overall circular structure and includes a valve body 1, a valve cover 2, and a waterproof and breathable membrane 3. The valve cover 2 has several vent holes 21 on its top. Each vent hole consists of a central circular hole surrounded by several strip-shaped holes distributed around its circumference. These circular and strip-shaped holes form a horn-like sound-emitting structure, effectively transmitting the buzzer sound. (Reference) Figure 2 The valve cover 2 has a sealing edge 22 protruding from the inner wall of its top, forming a sealing groove 24 between the sealing edge 22 and the cover edge 23 of the valve cover 2. The inner wall of the cover edge 23 also has a pair of first snap fasteners 25, symmetrically arranged on the inner side of the cover edge. The sealing groove 24 also has a pair of sealing holes 26, the outer periphery of which is adhered between the cover edge 23 and the sealing edge 22, symmetrically arranged on the inner side of the cover edge. A waterproof and breathable membrane 3 is attached to the inner wall of the valve cover 2 and covers the vent holes 21 in the sealing edge 22, preventing external water from entering the pressure relief valve.

[0030] Please refer to Figure 4 The waterproof and breathable membrane 3 consists of, from top to bottom, a waterproof adhesive layer 31, a breathable membrane layer 32, and a waterproof adhesive layer 33. Waterproof adhesive layers 31 and 33 are made of PET material. The breathable membrane layer 32 is made of PTFE material. This structure of the waterproof and breathable membrane provides breathability, sound permeability, and waterproofing.

[0031] refer to Figure 2 and Figure 3 The valve body 1 is nipple-shaped and integrally formed. One side of the valve body 1 has a tubular pressure relief pipe with external threads 11. The head of the pressure relief pipe has a second snap 12, which is formed by a slit in the middle of the head of the pressure relief pipe extending to both sides, giving it elasticity and allowing it to contract. A pre-reserved portion 13 is also provided between the second snap 12 and the external threads 11. A through hole 14 is axially located at the center of the valve body 1, directly connecting to the head of the pressure relief pipe. The other side of the valve body 1 has an annular flange 15. The outer wall of the flange 15 has a recessed strip groove 16. A notch is formed in the flange 15, and a sealing post 17 is placed in the notch, which is adapted to a sealing hole 26. A supporting flange 18 protruding from the inner wall of the valve body 1 is provided on the flange side. The supporting flange 18 has a notch 19 communicating with the through hole, and the through hole 14 is located within the supporting flange 18.

[0032] During assembly, please refer to Figure 1-5 The valve cover 2 is pressed onto the flange 15 of the valve body 1, and the first snap 25 inside the valve cover snaps into the slot 16 on the flange 15, thus fixing the valve body and the valve cover together. At the same time, the flange 15 of the valve body is also fitted into the sealing groove 24 between the sealing edge 22 and the cover edge 23, thus forming a good seal between the valve body and the valve cover, providing excellent waterproof performance. Furthermore, a pair of sealing posts 17 on the valve body are also inserted into a pair of sealing holes 26 on the valve cover, making the connection between the valve body and the valve cover even more secure.

[0033] Please refer to Figure 6 and Figure 7 This is an exploded view of embodiment two of the pressure relief valve; the pressure relief valve in this embodiment has a basically the same structure as that in the previous embodiment. The pressure relief valve also includes a valve body 1, a valve cover 2, and a waterproof and breathable membrane 3. The similarities will not be repeated here. The difference is that it also includes a buzzer. An L-shaped groove 27 is provided on the inner edge of the sealing edge 22. One end face of the buzzer 4 is stuck in the L-shaped groove, and the other end face of the buzzer 4 is abutted by the supporting edge 18. In this way, the buzzer 4 is fixed between the supporting edge 18 and the sealing edge 22.

[0034] Please refer to Figures 8 to 10 The alarm of this utility model includes a housing 20 and a pressure relief valve 10; the housing 20 is provided with a pressure relief hole 201. The housing 20 also has a slit for communication with a waterproof box; when there is a pressure difference between the waterproof box and the outside environment, airflow can enter the housing through the slit. (Reference) Figure 9When the alarm is assembled with the waterproof housing 40, the housing 20 is located inside the waterproof housing, while the pressure relief valve 10 is located outside the waterproof housing. The waterproof and breathable membrane inside the pressure relief valve 10 effectively prevents water from entering the housing and waterproof housing from the outside. The pressure relief hole has an internal thread, and the pressure relief pipe has an external thread 11. The pressure relief hole 201 of the housing 20 passes through the pressure relief port of the waterproof housing, and the pressure relief pipe is threaded into the pressure relief hole 201. This internal and external design facilitates the carrying of the water tank outdoors and ensures the dryness of the housing. (Reference) Figure 8 A waterproof rubber ring 30 is provided between the pressure relief pipe of the pressure relief valve 10 and the pressure relief hole 201 of the housing 20.

[0035] The alarm also includes a buzzer, which is located inside the pressure relief valve. The buzzer is connected to the controller via a wire, with one end of the wire connected to the buzzer and the other end passing through through hole 14 and connecting to the controller. Please refer to [reference needed]. Figure 7 An L-shaped groove 27 is provided on the inner edge of the sealing edge 22. One end of the buzzer 4 is fitted into the L-shaped groove, and the other end of the buzzer 4 is held in place by the supporting edge 18. Thus, the buzzer 4 is fixed between the supporting edge 18 and the sealing edge 22. As can be seen from the figure, the buzzer 4, the waterproof and breathable membrane 3, and the sealing edge 22 form a cavity 5. This cavity structure can effectively amplify the alarm sound emitted by the buzzer 4. The amplified alarm sound passes through the waterproof and breathable membrane 3 and is emitted through the vent 21. The head of the pressure relief pipe is provided with a second retractable clip 12, which allows the pressure relief pipe to pass through the pressure relief hole 201 during installation, but is restricted by the second clip 12 when exiting. The diameter of the second clip 12 is larger than the diameter of the pressure relief hole 201, preventing the pressure relief valve 10 from completely detaching from the housing 20 and preventing the wire connecting the buzzer and the controller from being broken.

[0036] Please refer to 10. The alarm also includes a controller 202 and a battery pack 203, which are assembled inside the housing. The battery pack 203 is connected to the controller via wires, providing power to the controller and the buzzer. The controller integrates a gyroscope, which detects the tilt angle. When the gyroscope tilts at a 30° angle, it sends an alarm signal to the controller. The controller then controls the buzzer to sound an alarm based on the alarm signal. When someone steals the waterproof box, the box changes from a horizontal position to a vertical position for carrying. The gyroscope detects this change in the box's horizontal position and then notifies the controller to activate the buzzer, thus enabling the alarm function. In other embodiments, a vibrator can be installed inside the housing to sense the vibration intensity. When the vibration intensity exceeds a threshold, it sends an alarm signal to the controller, which then controls the buzzer to sound an alarm. Please refer to [reference needed]. Figure 8 and Figure 10The controller 202 is also equipped with a power switch, one end of which is connected to the controller 202, and the other end protrudes from the housing 20. The power switch can be used to cancel the alarm, or to turn off the alarm in case of an erroneous alarm, thus restoring the alarm to normal operation.

[0037] Although the alarm in this embodiment only includes a vent valve and a buzzer, its venting path has been significantly altered. Please refer to... Figure 7 The buzzer 4 essentially blocks the airflow channel between the through hole 14 and the vent 21, allowing only a weak airflow path to be formed. Therefore, the main pressure relief channel needs to be modified. (See also...) Figure 11 After the alarm is installed on the water tank, the waterproof rubber ring 30 is deformed by the pressure relief pipe, the pressure relief hole 201 of the housing, and the waterproof tank. This state prevents external water from entering the housing through the gap between the pressure relief pipe and the pressure relief hole, thus providing a waterproof function. Reverse rotation of the air release valve 10 causes the pressure relief pipe to slowly spiral out of the pressure relief hole 201. It can be seen that a pre-reserved portion 13 needs to be provided at the head of the pressure relief pipe; otherwise, the pressure relief pipe cannot be turned. After the pressure relief pipe has been turned out a certain distance, the waterproof rubber ring 30 gradually returns to its original state, and the gap between the pressure relief pipe and the pressure relief hole connects to the outside. Additionally, when the pressure relief valve is turned, a gap is also created between the external thread of the pressure relief pipe and the internal screw of the pressure relief hole. Thus, the high-pressure air inside the waterproof tank enters the housing 20, and then the air pressure in the housing 20 is released to the outside through the gap between the pressure relief pipe and the pressure relief hole, thereby achieving the pressure relief function.

[0038] As can be seen from the above description, the alarm device in this embodiment integrates waterproof, alarm, and pressure relief functions.

[0039] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A pressure relief valve, characterized in that, It includes a valve body, a valve cover, and a waterproof and breathable membrane; the valve cover has several vent holes; the waterproof and breathable membrane is attached to the inner wall of the valve cover; one end of the valve body has a rim wall, the other end of the valve body has a pressure relief pipe, and the valve body has a through hole in the central axis, which leads directly to the head of the pressure relief pipe; the valve body and the valve cover are connected in a sealed manner.

2. The pressure relief valve according to claim 1, characterized in that, The inner wall of the valve cover top is provided with a sealing edge, and the space between the sealing edge and the cover edge of the valve cover forms a sealing groove; the edge wall of the valve body is assembled in the sealing groove.

3. The pressure relief valve according to claim 1, characterized in that, The valve cover has a first buckle on the inner wall of the cover edge, and the valve body has a groove on the outer side of the edge wall, and the first buckle engages with the groove.

4. The pressure relief valve according to claim 1, characterized in that, The waterproof and breathable membrane comprises a three-layer structure, consisting of a waterproof adhesive layer, a breathable membrane layer, and a waterproof adhesive layer from top to bottom.

5. An alarm device, characterized in that, The device includes a housing, a controller, a buzzer, and a pressure relief valve as described in claims 2-4; the controller is assembled inside the housing; the housing has a pressure relief hole; the pressure relief pipe of the pressure relief valve is assembled in the pressure relief hole; a support flange is provided on the flange side of the valve body; the buzzer is engaged between the support flange and the sealing flange, and the buzzer is also connected to the controller via a wire.

6. The alarm device according to claim 5, characterized in that, An L-shaped groove is provided on the inner edge of the sealing edge, and one end face of the buzzer is fitted into the L-shaped groove.

7. The alarm device according to claim 5, characterized in that, The pressure relief pipe is provided with external threads, and the pressure relief hole is provided with internal threads.

8. The alarm device according to claim 5, characterized in that, The top of the pressure relief pipe is provided with a second retractable buckle, the diameter of which is larger than the diameter of the pressure relief hole.

9. The alarm device according to claim 5, characterized in that, A waterproof rubber ring is provided between the pressure relief pipe and the pressure relief hole.

10. The alarm device according to claim 5, characterized in that, The controller integrates a gyroscope, which is used to detect the tilt angle and send an alarm signal to the controller when a preset tilt angle occurs; the controller is used to control the buzzer to emit an alarm sound according to the alarm signal.

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