Pressure relief device and oxygen cabin
Through the pressure relief device with a full mechanical structure, the connecting rod assembly and limiting parts are automatically adjusted under the pressure changes in the cabin, which solves the safety hazards of the existing high-pressure oxygen chamber pressure relief device, realizes an automated and accurate pressure relief process, and improves the safety and reliability of the oxygen chamber.
Patent Information
- Application Number
- CN202422261638.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-09-14
AI Technical Summary
The pressure relief device of the existing high-pressure oxygen chamber has safety hazards in emergency situations. The manual pressure relief valve needs to be manually operated, and the automatic pressure relief valve is susceptible to pressure sensor failure.
The pressure relief device with a full mechanical structure is adopted, and the connecting rod assembly and limiting parts are automatically adjusted under the pressure changes in the cabin, realizing self-locking and unlocking, ensuring that the hatch cover automatically releases pressure at the preset pressure value.
It avoids safety hazards caused by insensitivity of instruments or valves, realizes an automated and accurate pressure relief process, and improves the safety and reliability of the oxygen chamber.
Smart Images
Figure CN223242528U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hyperbaric oxygen chambers, in particular to a pressure relief device and an oxygen chamber. Background Art
[0002] During use, when the pressure inside a hyperbaric oxygen chamber becomes abnormal, an emergency pressure relief device is crucial for the safety of patients and medical staff. Existing pressure relief devices primarily include manual and automatic pressure relief valves. Manual pressure relief valves require manual opening by medical staff or operators when pressure becomes abnormal, posing a safety hazard in emergencies. Automatic pressure relief valves require interoperability with pressure sensors, posing a safety hazard if either the automatic pressure relief valve or the pressure sensor malfunctions, or if the pressure sensor signal transmission becomes unstable. Utility Model Content
[0003] Based on this, it is necessary to provide a pressure relief device and an oxygen chamber to address the problem of potential safety hazards in the pressure relief devices in the prior art.
[0004] The technical solution is as follows:
[0005] In one aspect, a pressure relief device is provided, comprising:
[0006] a cylinder, used for communicating with the cabin and provided with a telescopic end;
[0007] A connecting rod assembly comprising a first connecting rod having a first connecting end and a crimping end, a second connecting rod having a second connecting end and a limiting end, a hinge, and a first limiting member, wherein the first connecting rod is configured to be hingedly connected to a mounting body, the first connecting end, the second connecting end, and the telescopic end are all connected to the hinge, and the first limiting member is mounted on one of the first connecting end and the second connecting end and is configured to engage with the other of the first connecting end and the second connecting end in a limiting manner when the first connecting end rotates relative to the second connecting end to a locking angle, wherein the locking angle is greater than 180°;
[0008] The second limiting member is provided on one side of the limiting end and is configured to abut against the limiting end when the first connecting end rotates to a locking angle relative to the second connecting end, so as to apply a pre-tightening force to the telescopic end.
[0009] The technical solution is further described below:
[0010] In one embodiment, the axial direction of the crimping end is set at an angle to the axial direction of the first connecting end.
[0011] In one embodiment, the connecting rod assembly further includes a fixed hinge mounted on the mounting body, and the connection between the crimping end and the first connecting end is connected to the fixed hinge.
[0012] In one embodiment, the first connecting rod and the second connecting rod are respectively located on opposite sides of the telescopic end.
[0013] In one embodiment, the first limiting member is fixed to a side of the second connecting end facing away from the telescopic end, and is engaged with a side of the first connecting end facing away from the telescopic end.
[0014] In one embodiment, the pressure relief device further includes a third limiting member, which is arranged on a side of the limiting end away from the second limiting member and is configured to cooperate with the limiting end when the hatch cover is opened, so that the crimping end is at least partially located within the movable space of the hatch cover.
[0015] In one embodiment, the pressure relief device also includes a sliding member hinged to the limit end, the sliding member is used to slide with the mounting body, the second limit member is arranged on one side of the sliding member, and is configured to interfere with the sliding member when the first connection end is rotated to a locking angle relative to the second connection end, so as to apply a preload force to the telescopic end.
[0016] In one embodiment, the pressure relief device further includes a slide rail mounted on the mounting body, and the sliding member is configured as a slider, which is slidably engaged with the slide rail.
[0017] On the other hand, an oxygen chamber is provided, comprising a chamber body for storing oxygen, a chamber cover provided on the chamber body, and the pressure relief device.
[0018] In one embodiment, one side of the hatch cover is hinged to the cabin body, and the other side is crimped to the crimping end.
[0019] When using the pressure relief device and oxygen chamber in the above-described embodiment, after rotating the first connecting end relative to the second connecting end to a locking angle, the first connecting rod and cylinder are correspondingly mounted on the mounting body, the cylinder is connected to the cabin body, and the second stopper is correspondingly mounted on one side of the stopper, so that the connecting rod assembly is in a self-locking state and crimped onto the hatch cover. When the pressure within the cabin is less than or equal to a preset pressure value, the driving force of the telescopic end cannot overcome the preload force, and the connecting rod assembly remains in a self-locking state. At this time, the second stopper maintains a contact engagement with the stopper, the extended length of the telescopic end remains unchanged, the first stopper maintains a limited engagement with the other of the first and second connecting ends, and the crimped end is stably and reliably crimped onto the hatch cover, preventing the hatch cover from opening. When the pressure inside the cabin is greater than the preset pressure value, the driving force of the telescopic end overcomes the preload force, the telescopic end extends, and the connecting rod assembly releases the self-locking state. At this time, the interference fit between the second limiter and the limiter end is released, the limit fit between the first limiter and the other of the first connection end and the second connection end is released, and the crimping fit between the crimping end and the hatch cover is released. The hatch cover can be opened under the pressure inside the cabin to relieve pressure. The pressure relief device in this application adopts a fully mechanical structure to avoid safety hazards caused by insensitive instruments or valves, and ensure the safety of people outside the cabin. In addition, the telescopic end is controlled by the pressure inside the cabin to achieve automatic pressure relief while ensuring the accuracy of pressure relief, avoiding personnel misoperation and improving the safety of the oxygen cabin. The second limiter and the connecting rod assembly are separately arranged, and the preload force of the telescopic end can be adjusted by adjusting the position of the second limiter relative to the limiter end, thereby adjusting the pressure relief value of the cabin and improving the practicality of the oxygen cabin. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The drawings that constitute a part of this application are used to provide further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute improper limitations on this application.
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0022] Figure 1 This is a schematic structural diagram of a pressure relief device installed on a hatch cover according to an embodiment.
[0023] Description of reference numerals:
[0024] 10. Pressure relief device; 100. Cylinder; 110. Telescopic end; 200. First connecting rod; 210. First connecting end; 220. Crimp end; 300. Second connecting rod; 310. Second connecting end; 320. Limit end; 400. Hinge; 500. First limit member; 600. Second limit member; 700. Fixed hinge; 800. Third limit member; 900. Sliding member; 1000. Slide rail; 20. Cabin; 30. Hatch cover. DETAILED DESCRIPTION
[0025] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.
[0026] like Figure 1 As shown, in one embodiment, a pressure relief device 10 is provided, including a cylinder 100, a connecting assembly and a second limiter 600. The cylinder 100 is used to communicate with the cabin 20 and is provided with a telescopic end 110. The connecting rod assembly includes a first connecting rod 200 provided with a first connecting end 210 and a crimping end 220, a second connecting rod 300 provided with a second connecting end 310 and a limiter end 320, a hinge 400 and a first limiter 500. The first connecting rod 200 is used to be hinged to the mounting body. The first connecting end 210, the second connecting end 310 and the telescopic end 110 are all connected to the hinge 400. The first limiter 500 is installed on one of the first connecting end 210 and the second connecting end 310, and is configured to rotate at the first connecting end 210 relative to the second connecting end 310 to a locking angle (such as Figure 1 The second stopper 600 is disposed on one side of the stopper end 320 and is configured to engage with the stopper end 320 when the first connection end 210 rotates relative to the second connection end 310 to the locking angle, thereby applying a preload force to the telescopic end 110.
[0027] When using the pressure relief device 10 in the above embodiment, after rotating the first connecting end 210 relative to the second connecting end 310 to a locking angle, the first connecting rod 200 and the cylinder 100 are then correspondingly mounted on the mounting body, the cylinder 100 is in communication with the cabin 20, and the second stopper 600 is mounted on one side of the stopper 320, causing the connecting rod assembly to be in a self-locking state and press-fitted against the hatch cover 30. When the pressure within the cabin 20 is less than or equal to a predetermined pressure value, the driving force of the telescopic end 110 cannot overcome the preload force, and the connecting rod assembly remains in the self-locking state. At this time, the second stopper 600 maintains a contact engagement with the stopper 320, the extended length of the telescopic end 110 remains unchanged, and the first stopper 500 maintains a positional engagement with the other of the first connecting end 210 and the second connecting end 310. The crimping end 220 is stably and reliably press-fitted against the hatch cover 30, preventing the hatch cover 30 from opening. When the pressure within the cabin 20 exceeds a preset pressure value, the driving force of the telescopic end 110 overcomes the preload force, causing the telescopic end 110 to extend and the connecting rod assembly to release its self-locking state. At this point, the interference fit between the second limiter 600 and the limiter end 320 is released, the limit fit between the first limiter 500 and the other of the first connection end 210 and the second connection end 310 is released, and the crimping fit between the crimping end 220 and the hatch cover 30 is released. The hatch cover 30 can then be opened to relieve pressure under the pressure within the cabin 20. The pressure relief device 10 in this application utilizes a fully mechanical structure, avoiding safety hazards caused by insensitive instruments or valves and ensuring the safety of personnel outside the cabin 20. Furthermore, the telescopic end 110 is controlled by the pressure within the cabin 20, achieving automatic pressure relief while also ensuring the accuracy of pressure relief, avoiding operator misoperation, and improving the reliability of the pressure relief device 10. The second limit member 600 is separately arranged from the connecting rod assembly. The preload force of the telescopic end 110 can be adjusted by adjusting the position of the second limit member 600 relative to the limit end 320, thereby adjusting the pressure relief pressure value (i.e., the preset pressure value) of the cabin 20, thereby improving the practicality of the pressure relief device 10.
[0028] The mounting body can be the cabin 20 or an object surrounding the cabin 20. The first limiting member 500 and the second limiting member 600 can both be configured as limiting plates, limiting blocks, limiting frames, or other limiting structures. The hinge 400 can be configured as a movable hinge, a hinge link, or other hinged structure. Specifically, in this embodiment, the hinge 400 is configured as a hinge link, and the first connecting end 210, the second connecting end 310, and the telescopic end 110 are all rotatably connected to the hinge link.
[0029] The locking angle can be adjusted flexibly based on actual usage needs. For example, the locking angle can be set to a range of 181° to 185°. Specifically, in this embodiment, the locking angle is set to 182°.
[0030] like Figure 1As shown, the axis direction of the crimping end 220 is further arranged at an angle to the axis direction of the first connecting end 210. In this way, the first connecting rod 200 is hook-shaped, which reduces the movable space of the first connecting rod 200 while ensuring that the first connecting rod 200 can hook the hatch 30, thereby improving the reliability of the pressure relief device 10.
[0031] Specifically in this embodiment, the axial direction of the crimping end 220 and the axial direction of the first connecting end 210 are arranged at an obtuse angle.
[0032] like Figure 1 As shown, the connecting rod assembly optionally further includes a fixed hinge 700 mounted on the mounting body, and the connection between the crimping end 220 and the first connecting end 210 is connected to the fixed hinge 700. In this way, the first connecting rod 200 can rotate along a predetermined trajectory with the fixed hinge 700 as the rotation center, ensuring that the first connecting rod 200 can press the hatch cover 30 tightly, thereby improving the reliability of the pressure relief device 10.
[0033] like Figure 1 As shown, in one embodiment, the first connecting rod 200 and the second connecting rod 300 are respectively located on opposite sides of the telescopic end 110. In this way, the telescopic end 110 can be smoothly ejected to release the self-locking state of the connecting rod assembly when the pressure in the cabin 20 is greater than a preset pressure value.
[0034] Specifically in this embodiment, when the first connection end 210 rotates relative to the second connection end 310 to a locking angle, the axis of the telescopic end 110 coincides with the angle bisector of the locking angle.
[0035] like Figure 1 As shown, optionally, the first stopper 500 is fixed to the side of the second connecting end 310 facing away from the telescopic end 110, and cooperates with the side of the first connecting end 210 facing away from the telescopic end 110 to limit the position. In this way, the first stopper 500 can ensure that it can perform its limiting function while not interfering with the first connecting rod 200 and the hinge 400 during the ejection process of the telescopic end 110, thereby improving the reliability of the pressure relief device 10.
[0036] like Figure 1As shown, in one embodiment, the pressure relief device 10 further includes a third stopper 800. The third stopper 800 is disposed on a side of the stopper end 320 away from the second stopper 600 and is configured to engage with the stopper end 320 when the hatch cover 30 is opened, thereby ensuring that the crimping end 220 is at least partially located within the movable space of the hatch cover 30. In this manner, the third stopper 800 limits the displacement of the connecting rod assembly, preventing the crimping end 220 from becoming unhooked due to excessive displacement. This ensures that the crimping end 220 can limit the movable range of the hatch cover 30 when the hatch cover 30 pops open, thereby improving the safety of the pressure relief device 10. Furthermore, the third stopper 800 is disposed separately from the connecting rod assembly. Adjusting the position of the third stopper 800 relative to the stopper end 320 can adjust the displacement of the connecting rod assembly, thereby adjusting the opening range of the hatch cover 30, thereby improving the practicality of the pressure relief device 10.
[0037] The movable space of the hatch cover 30 refers to the trajectory space that the hatch cover 30 passes through during the normal opening process. The third limiting member 800 can be configured as a limiting plate, a limiting seat, a limiting block or other limiting structures.
[0038] Specifically in this embodiment, when the connecting rod assembly is in the self-locking state, the second limiting member 600 is in contact with the limiting end 320 , and the third limiting member 800 is spaced apart from the limiting end 320 .
[0039] like Figure 1 As shown, in one embodiment, the pressure relief device 10 further includes a sliding member 900 hingedly connected to the limiting end 320. The sliding member 900 is configured to slidably engage with the mounting body. The second limiting member 600 is disposed on one side of the sliding member 900 and is configured to abut against the sliding member 900 when the first connecting end 210 rotates relative to the second connecting end 310 to a locking angle, thereby applying a preload force to the telescopic end 110. In this manner, the sliding member 900 guides the second connecting rod 300, ensuring that the second connecting rod 300 can move along a predetermined path. When the pressure within the cabin 20 is less than or equal to a predetermined pressure value, the sliding member 900 abuts against the second limiting member 600 to apply a preload force to the telescopic end 110. When the pressure within the cabin 20 is greater than a predetermined pressure value, the sliding member 900 abuts against the third limiting member 800 to limit the range of motion of the hatch cover 30, thereby improving the reliability and safety of the pressure relief device 10.
[0040] The sliding member 900 can be configured as a slider, a pulley or other sliding structures. The sliding member 900 can be connected to the mounting body by any sliding matching method in the prior art.
[0041] like Figure 1 As shown, optionally, the pressure relief device 10 further includes a slide rail 1000 mounted on the mounting body, and the sliding member 900 is configured as a slider, which slides in cooperation with the slide rail 1000 .
[0042] Specifically in this embodiment, the slide rail 1000 extends in a straight line, and the second limiting member 600 and the third limiting member 800 are respectively located on both sides of the sliding member 900 along the extending direction of the slide rail 1000 .
[0043] like Figure 1 As shown, in one embodiment, an oxygen cabin is provided, comprising a cabin body 20 for storing oxygen, a cabin cover 30 covering the cabin body 20, and the pressure relief device 10 in any of the above embodiments.
[0044] During use of the oxygen chamber in the above embodiment, after the first connecting end 210 is rotated relative to the second connecting end 310 to a locking angle, the first connecting rod 200 and the cylinder 100 are correspondingly mounted on the mounting body, the cylinder 100 is connected to the chamber body 20, and the second stopper 600 is mounted on one side of the stopper 320, so that the connecting rod assembly is in a self-locking state and is crimped onto the hatch 30. When the pressure within the chamber 20 is less than or equal to a predetermined pressure value, the driving force of the telescopic end 110 cannot overcome the preload force, and the connecting rod assembly remains in a self-locking state. At this time, the second stopper 600 maintains a contact engagement with the stopper 320, the extended length of the telescopic end 110 remains unchanged, and the first stopper 500 maintains a limited engagement with the other of the first connecting end 210 and the second connecting end 310. The crimping end 220 is stably and reliably crimped onto the hatch 30, preventing the hatch 30 from opening. When the pressure inside the cabin 20 is greater than the preset pressure value, the driving force of the telescopic end 110 overcomes the preload force, the telescopic end 110 extends, and the connecting rod assembly releases the self-locking state. At this time, the interference fit between the second limiter 600 and the limiter end 320 is released, the limit fit between the first limiter 500 and the other of the first connection end 210 and the second connection end 310 is released, and the crimping fit between the crimping end 220 and the hatch cover 30 is released. The hatch cover 30 can be opened to relieve pressure under the pressure inside the cabin 20. The pressure relief device 10 in this application adopts a fully mechanical structure to avoid safety hazards caused by insensitive instruments or valves, and ensure the safety of people outside the cabin 20. In addition, the telescopic end 110 is controlled by the pressure inside the cabin 20 to achieve automatic pressure relief while ensuring the accuracy of pressure relief, avoiding personnel misoperation, and improving the safety of the oxygen cabin. The second limit member 600 is separately provided from the connecting rod assembly. The preload force of the telescopic end 110 can be adjusted by adjusting the position of the second limit member 600 relative to the limit end 320, thereby adjusting the pressure relief value (i.e., the preset pressure value) of the cabin body 20, thereby improving the practicality of the oxygen cabin.
[0045] Optionally, one side of the hatch cover 30 is hinged to the cabin body 20, and the other side is crimped to the crimping end 220. In this way, when the pressure in the cabin body 20 is less than or equal to a preset pressure value, the force on the hatch cover 30 is more uniform, and the cabin body 20 can be kept sealed. When the pressure in the cabin body 20 is greater than the preset pressure value, the hatch cover 30 can be restrained on the cabin body 20, thereby improving the reliability of the oxygen chamber.
[0046] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.
[0047] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.
[0048] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.
[0049] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.
[0050] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.
[0051] It should also be understood that when explaining the connection relationship or positional relationship of elements, even if not explicitly described, the connection relationship and positional relationship should be interpreted as including a range of error, which should be within the acceptable deviation range of the specific value determined by those skilled in the art. For example, "approximately," "approximately," or "substantially" can mean within one or more standard deviations, which is not limited here.
[0052] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0053] The above embodiments merely illustrate several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.
Claims
1. A pressure relief device, characterized in that: include: a cylinder, used for communicating with the cabin and provided with a telescopic end; A connecting rod assembly comprising a first connecting rod having a first connecting end and a crimping end, a second connecting rod having a second connecting end and a limiting end, a hinge, and a first limiting member, wherein the first connecting rod is configured to be hingedly connected to a mounting body, the first connecting end, the second connecting end, and the telescopic end are all connected to the hinge, and the first limiting member is mounted on one of the first connecting end and the second connecting end and is configured to engage with the other of the first connecting end and the second connecting end in a limiting manner when the first connecting end rotates relative to the second connecting end to a locking angle, wherein the locking angle is greater than 180°; The second limiting member is provided on one side of the limiting end and is configured to abut against the limiting end when the first connecting end rotates to a locking angle relative to the second connecting end, so as to apply a pre-tightening force to the telescopic end.
2. The pressure relief device according to claim 1, characterized in that: The axial direction of the crimping end is arranged at an angle to the axial direction of the first connecting end.
3. The pressure relief device according to claim 2, characterized in that: The connecting rod assembly further includes a fixed hinge mounted on the mounting body, and a connection point between the crimping end and the first connecting end is connected to the fixed hinge.
4. The pressure relief device according to claim 1, characterized in that: The first connecting rod and the second connecting rod are respectively located on two opposite sides of the telescopic end.
5. The pressure relief device according to claim 4, characterized in that: The first limiting member is fixed to a side of the second connecting end facing away from the telescopic end, and is engaged with a side of the first connecting end facing away from the telescopic end.
6. The pressure relief device according to claim 1, characterized in that: The pressure relief device also includes a third limiting member, which is arranged on a side of the limiting end away from the second limiting member and is configured to cooperate with the limiting end when a hatch cover provided on the cabin body is opened, so that the crimping end is at least partially located within the movable space of the hatch cover.
7. The pressure relief device according to any one of claims 1 to 6, characterized in that: The pressure relief device also includes a sliding member hinged to the limit end, the sliding member is used to slide with the mounting body, the second limit member is arranged on one side of the sliding member, and is configured to interfere with the sliding member when the first connection end is rotated to a locking angle relative to the second connection end, so as to apply a pre-tightening force to the telescopic end.
8. The pressure relief device according to claim 7, characterized in that: The pressure relief device further comprises a slide rail mounted on the mounting body, the slide member is configured as a slider, and the slider is slidably engaged with the slide rail.
9. An oxygen chamber, characterized in that: The invention comprises a cabin for storing oxygen, a cabin cover provided on the cabin, and a pressure relief device according to any one of claims 1 to 8.
10. The oxygen chamber according to claim 9, characterized in that: One side of the hatch cover is hinged to the cabin body, and the other side is press-fitted with the press-fit end.