An emergency pressure relief device for an oxygen chamber

Abstract

This utility model discloses an emergency depressurization device for an oxygen chamber, including a mounting base with a groove on the inner side and a depressurization hole on the groove. A silencer is installed on the outer side of the depressurization hole. A pressure plate is provided above the groove, and a rotatable valve plate is provided between the groove and the pressure plate. The valve plate has a first through hole. The mounting base has an inner handle and an outer handle that are linked together. The inner or outer handle can drive the valve plate to rotate, adjusting the overlap between the first through hole and the depressurization hole. This utility model utilizes the design of the valve plate being linked with the inner and outer handles. In an emergency, the operator only needs to rotate the handle to quickly adjust the valve plate, so that the first through hole and the depressurization hole quickly reach a complete overlap, achieving rapid depressurization of the chamber and ensuring the safety of the oxygen chamber and the personnel inside.

Description

Technical Field

[0001] This utility model relates to the field of oxygen chamber technology, and in particular to an emergency depressurization device for oxygen chambers. Background Technology

[0002] In the medical field, hyperbaric oxygen chambers are important medical devices primarily used to provide hyperbaric oxygen therapy to patients. Hyperbaric oxygen therapy works by having patients breathe pure or high-concentration oxygen in an environment above atmospheric pressure, increasing blood oxygen levels and partial pressure, and promoting oxygen diffusion to tissue cells, thereby achieving the goal of treating diseases. The chamber contains compressed air at a certain pressure. For safety reasons, pressure release in case of emergencies needs to be considered. Therefore, the pressure chamber needs to be equipped with a manual pressure relief valve for releasing pressure before opening the chamber door or in emergency situations.

[0003] Traditional oxygen chamber pressure relief valves are inconvenient to operate. Some valves use a threaded rotation method to open and release pressure, which takes a long time and cannot provide rapid venting. Other valves require the user to manually maintain a push-pull position during pressure relief, which is very strenuous. Furthermore, pressure chamber depressurization generates significant noise, causing discomfort to personnel. Utility Model Content

[0004] To address the aforementioned problems, this invention provides an emergency depressurization device for oxygen chambers that is simple in structure and easy to use.

[0005] Therefore, the technical solution of this utility model is: an emergency depressurization device for an oxygen chamber, including a mounting base, a groove on the inner side of the mounting base, a depressurization hole on the groove, and a silencer installed on the outer side of the depressurization hole; a pressure plate is provided above the groove, and a rotatable valve plate is provided between the groove and the pressure plate, and a first through hole is provided on the valve plate; an inner handle and an outer handle are provided on the inner and outer sides of the mounting base, and the inner handle or the outer handle can drive the valve plate to rotate, adjusting the overlap between the first through hole and the depressurization hole.

[0006] Based on the above scheme and as a preferred embodiment of the above scheme: the first through hole and the pressure relief hole can be in three states: completely offset, completely overlapped, and partially overlapped.

[0007] Based on the above scheme and as a preferred embodiment of the above scheme: both the valve plate and the groove are fan-shaped structures, and the included angle of the groove is greater than that of the valve plate. When the valve plate is attached to one side edge of the groove, the first through hole and the pressure relief hole are completely offset. When the valve plate is attached to the other side edge of the groove, the first through hole and the pressure relief hole are completely overlapped.

[0008] Based on the above scheme and as a preferred embodiment of the above scheme: the included angle of the valve plate is 45 degrees and the included angle of the groove is 90 degrees.

[0009] Based on the above scheme and as a preferred embodiment of the above scheme: a mounting hole is provided at the center of the valve plate, and a bayonet is provided on the mounting hole; the inner handle and the outer handle are connected by a handle connecting rod, the handle connecting rod passes through the mounting hole, and a positioning pin is provided on the handle connecting rod to cooperate with the bayonet.

[0010] Based on the above scheme and as a preferred embodiment of the above scheme: the two ends of the pressure plate are fixed on the mounting base, the pressure plate is provided with multiple positioning holes, and positioning pins are installed in the positioning holes; the positioning pins press against the valve plate, and a gap is left between the valve plate and the pressure plate.

[0011] Based on the above scheme and as a preferred embodiment of the above scheme: the pressure relief hole is provided with a first sealing groove on the side facing the valve plate, and a first sealing ring is provided in the sealing groove. The valve plate is sealed and fitted with the pressure relief hole through the first sealing ring.

[0012] Based on the above scheme and as a preferred embodiment of the above scheme: the outer side of the mounting base is provided with a second sealing groove, and the second sealing groove is provided with a second sealing ring; the mounting base is provided with a mounting hole.

[0013] Based on the above scheme and as a preferred embodiment of the above scheme: the mounting base is provided with a handle mounting hole; a handle connecting rod is provided between the inner handle and the outer handle, and the handle connecting rod is rotatably mounted in the handle mounting hole through a bearing; the pressure plate is provided with a second through hole for the handle connecting rod to pass through.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] By utilizing the design that links the valve plate with the inner and outer handles, in an emergency, the operator can quickly adjust the valve plate by simply turning the handle, so that the first through hole and the pressure relief hole quickly reach a state of complete overlap, thereby achieving rapid depressurization of the chamber. Compared with the traditional screw-rotated opening method, this device greatly shortens the depressurization operation time, can respond quickly in an emergency, and ensure the safety of the oxygen chamber and the personnel inside.

[0016] By rotating the handle, the alignment of the movable valve plate's through-hole with the fixed pressure relief hole can be adjusted, thereby flexibly regulating the rate at which gas is released from the chamber to the outside. In different emergency situations, the pressure relief rate can be precisely controlled according to actual needs. This allows for rapid pressure relief to deal with sudden high-pressure dangers, as well as moderately slow pressure relief in some cases to prevent excessive pressure relief from affecting subsequent treatment, meeting diverse usage scenarios.

[0017] The valve plate is pressed against the first sealing ring by the positioning pin on the pressure plate, and it seals with the pressure relief hole to ensure a good seal between the valve plate and the pressure relief hole, preventing gas leakage during normal use. At the same time, the mounting base and the chamber are sealed together by the second sealing ring, which further ensures the sealing of the connection between the entire device and the oxygen chamber, avoids oxygen leakage, maintains stable pressure in the oxygen chamber, and ensures the safety and stability of the treatment environment.

[0018] Installing a silencer on the outside of the pressure relief vent can effectively reduce the noise generated during pressure chamber depressurization. This not only reduces noise interference to patients and surrounding personnel inside the chamber, preventing discomfort, but also meets the requirements for quietness in medical environments, thus improving the overall user experience. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model (inner view).

[0020] Figure 2 This is a schematic diagram of the structure of this utility model (outer view).

[0021] Figure 3 This is an exploded view of the parts of this utility model;

[0022] Figure 4 This is a diagram showing the first through hole and the pressure relief hole of this utility model completely offset (hidden pressure plate);

[0023] Figure 5 This is a diagram showing the overlap between the first through hole and the pressure relief hole in this utility model (with the pressure plate hidden).

[0024] Figure 6 This is a diagram showing the first through hole and the pressure relief hole of this utility model completely overlapping (hidden pressure plate);

[0025] Figure 7 This is a schematic diagram of the structure of the mounting base of this utility model;

[0026] Figure 8 This is a schematic diagram of the valve plate of this utility model.

[0027] The markings in the diagram are as follows: mounting base 1, mounting hole 11, second sealing groove 12, groove 13, pressure relief hole 14, first sealing groove 15, handle assembly hole 16, second sealing ring 2, silencer 3, first sealing ring 4, pressure plate 5, positioning hole 51, positioning pin 52, second through hole 53, valve plate 6, assembly hole 61, bayonet 62, first through hole 63, bearing 7, inner handle 81, outer handle 82, handle connecting rod 83, positioning pin 84, bolt 9. Detailed Implementation

[0028] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0030] See the attached drawings. The emergency pressure relief device for the oxygen chamber described in this embodiment is installed on the chamber body. The pressure relief device includes a mounting base 1, which has mounting holes 11 and is fixed to the chamber body by bolts 9. The outer side of the mounting base 1 is fitted against the inner wall of the chamber, and a second sealing groove 12 is provided on the outer side. A second sealing ring 2 is provided in the second sealing groove 12 to improve the sealing of the connection between the mounting base and the chamber body, prevent oxygen leakage, maintain the pressure stability inside the oxygen chamber, and ensure the safety and stability of the treatment environment.

[0031] The mounting base 1 has a 90-degree fan-shaped groove 13 on its inner side, and a pressure relief hole 14 on the groove 13. A silencer 3 is installed on the outer side of the pressure relief hole 14. The silencer 3 can be a commercially available BSM flat-head silencer or other suitable gas silencer, which can reduce the noise generated when the pressure chamber is depressurized. A first sealing groove 15 is provided on the side of the pressure relief hole 14 facing the valve plate, and a first sealing ring 4 is provided inside the sealing groove 15.

[0032] A pressure plate 5 is provided above the groove 13. The pressure plate 5 is an oblique strip structure, with both ends of the pressure plate 5 fixed to the mounting base 1, and the middle of the pressure plate 5 protruding upwards. A rotatable valve plate 6 is provided between the groove 13 and the pressure plate 5. The valve plate 6 is a 45-degree fan-shaped structure and is concentric with the groove 13. At the same time, the pressure plate 5 is provided with multiple positioning holes 51, and positioning pins 52 are installed in the positioning holes 51. The positioning pins 52 press against the valve plate 6, so that the valve plate 6 and the first sealing ring 4 on the outside of the pressure relief hole 14 are tightly fitted to prevent air leakage when closed. At the same time, the positioning pins 52 also leave a gap between the valve plate 6 and the pressure plate 5 to facilitate air flow during pressure relief.

[0033] The mounting base 1 is provided with a handle mounting hole 16, which is located at the center of the groove 13. A bearing 7 is provided inside the handle mounting hole 16. The inner handle 81 and the outer handle 82 are linked on the inner and outer sides of the mounting base 1. The inner handle 81 and the outer handle 82 are connected by a handle connecting rod 83. The handle connecting rod 83 passes through the bearing 7, and the inner handle 81 and the outer handle 82 can rotate relative to the mounting base 1. At the same time, the pressure plate 5 is provided with a second through hole 53 for the handle connecting rod 83 to pass through, so as to facilitate the rotation of the inner handle 81.

[0034] The valve plate 6 has an assembly hole 61 at its center and a latch 62 on the assembly hole 61. The handle connecting rod 83 passes through the assembly hole 61 and has a positioning pin 84 on the handle connecting rod 83, which works in conjunction with the latch 62. When the handle connecting rod 83 rotates, the positioning pin 84 can drive the valve plate 6 to rotate synchronously through the latch 62. That is, when the inner handle 81 and the outer handle 82 rotate, they can both drive the valve plate 6 to rotate synchronously.

[0035] The valve plate 6 is provided with a first through hole 63, the diameter of which is the same as the diameter of the pressure relief hole 14. When the inner handle 81 or the outer handle 82 is rotated, the overlap between the first through hole 63 and the pressure relief hole 14 can be adjusted, such that the first through hole 63 and the pressure relief hole 14 are completely offset, completely overlapped, or partially overlapped, thereby controlling the pressure relief speed. When the valve plate 6 is in contact with the vertical edge of the groove 13, the first through hole 63 and the pressure relief hole 14 are completely offset, which is the sealed state; when the valve plate 6 is in contact with the horizontal edge of the groove 13, the first through hole 63 and the pressure relief hole 14 are completely overlapped, which is the maximum pressure relief state, and pressure relief can be completed quickly.

[0036] In use, the pressure relief device is fixed to the installation position of the cabin with bolts. Under normal operation, the first through hole 63 of the valve plate 6 is completely offset from the pressure relief hole 14 of the mounting base 1, and the valve plate 6 and the pressure relief hole 14 are sealed and fitted by the first sealing ring 4 to prevent pressure relief. When the oxygen chamber needs to be depressurized, the inner handle 81 or the outer handle 82 is manually rotated to adjust the degree of overlap between the first through hole 63 on the valve plate 6 and the pressure relief hole 14 where the silencer 3 is located, thereby adjusting the speed at which the gas in the cabin is discharged to the outside. In an emergency, the first through hole 63 and the pressure relief hole 14 are completely overlapped to achieve rapid depressurization of the cabin.

[0037] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An emergency pressure relief device for an oxygen chamber, characterized by: The device includes a mounting base with a groove on its inner side and a pressure relief hole on the groove. A silencer is installed on the outer side of the pressure relief hole. A pressure plate is provided above the groove, and a rotatable valve plate is provided between the groove and the pressure plate. The valve plate has a first through hole. The mounting base has an inner handle and an outer handle that are linked together. The inner handle or the outer handle can drive the valve plate to rotate and adjust the overlap between the first through hole and the pressure relief hole.

2. The emergency pressure relief device for an oxygen cabin according to claim 1, wherein: The first through hole and the pressure relief hole can be in three states: completely offset, completely overlapped, and partially overlapped.

3. The emergency pressure relief device for an oxygen cabin according to claim 2, wherein: Both the valve plate and the groove are fan-shaped structures, and the included angle of the groove is greater than that of the valve plate. When the valve plate is attached to one side edge of the groove, the first through hole and the pressure relief hole are completely offset. When the valve plate is attached to the other side edge of the groove, the first through hole and the pressure relief hole are completely overlapped.

4. The emergency pressure relief device for an oxygen cabin according to claim 1, wherein: The valve plate has a sector angle of 45 degrees and a groove angle of 90 degrees.

5. The emergency pressure relief device for an oxygen cabin according to claim 1, wherein: A mounting hole is provided at the center of the valve plate, and a bayonet is provided on the mounting hole; the inner handle and the outer handle are connected by a handle connecting rod, which passes through the mounting hole and is provided with a positioning pin, which works in conjunction with the bayonet.

6. An emergency depressurization device for an oxygen chamber as described in claim 1, characterized in that: The pressure plate is fixed at both ends to the mounting base. The pressure plate has multiple positioning holes, and positioning pins are installed in the positioning holes. The positioning pins press against the valve plate, and a gap is left between the valve plate and the pressure plate.

7. The emergency pressure relief device for a habitat as defined in claim 6, wherein: The pressure relief hole is provided with a first sealing groove on the side facing the valve plate, and a first sealing ring is provided in the sealing groove. The valve plate is sealed with the pressure relief hole through the first sealing ring.

8. The emergency pressure relief device for an oxygen chamber according to claim 1, wherein: The mounting base has a second sealing groove on its outer side, and a second sealing ring is provided in the second sealing groove; the mounting base has a mounting hole.

9. The emergency pressure relief device for use in an oxygen chamber according to claim 1, wherein: The mounting base is provided with a handle mounting hole; a handle connecting rod is provided between the inner handle and the outer handle, and the handle connecting rod is rotatably mounted in the handle mounting hole through a bearing; the pressure plate is provided with a second through hole for the handle connecting rod to pass through.

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