Pressure release valve
By designing a pressure relief valve including valve housing, valve core plate and rotary shaft, the problem that the existing micro-pressure oxygen chamber pressure relief valve cannot be operated inside or outside the cabin, achieving high ventilation volume and low noise The pressure relief effect is suitable for the emergency pressure relief needs of micro-pressure oxygen chambers.
Patent Information
- Application Number
- CN202420211543.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-29
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-01-29
AI Technical Summary
The existing micro-pressure oxygen chamber pressure relief valve cannot be operated inside or outside the chamber, and the air outlet volume is small and the noise is high, making it difficult to meet the needs of simple operation inside and outside the chamber, with high throughput and low noise.
A pressure relief valve is designed, including a valve housing, valve core plate and rotary shaft. The valve housing and valve core plate are provided with through holes. The valve core plate is driven to rotate through the rotary shaft, so that the through holes and valves on the valve core plate are The through holes on the housing overlap to achieve gas pressure relief. The pressure relief valve can be opened and closed by the inner or outer handle, and a muffler is provided to reduce noise.
It realizes the pressure relief function that can be operated easily both inside and outside the cabin, has the advantages of high ventilation volume and low noise, and is suitable for cabins with large wall thickness.
Smart Images
Figure 00000000_0000_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mechanical valves, in particular to a pressure relief valve. Background Art
[0002] As a civilian product, the micro-pressure oxygen chamber is aimed at various user groups. During use, it is inevitable that people in the chamber will need to leave the chamber urgently. In order to cope with the emergency exit situation, the chamber must be equipped with valves that can release pressure both inside and outside the chamber.
[0003] Existing micro-pressure oxygen chamber pressure relief valves mostly use ball valves or pull-out pressure relief valves. Ball valves cannot be operated both inside and outside the cabin. In order to achieve pressure relief both inside and outside the cabin, at least two ball valves need to be arranged. When emergency pressure relief is required inside or outside the cabin, pressure relief is achieved by operating different ball valves. The pull-out pressure relief valve has a small air output and loud noise. It can be seen that whether it is possible to provide a pressure relief valve that can be easily operated both inside and outside the cabin, and has the advantages of high throughput and low noise, has become a technical problem that needs to be solved urgently by technical personnel in this field. Utility Model Content
[0004] In order to realize that the pressure relief valve can be opened both inside and outside the hyperbaric oxygen chamber, and the pressure relief valve has the advantages of high ventilation volume and low noise, and can be suitable for a chamber with a thicker wall, the utility model provides a pressure relief valve with the following technical solution.
[0005] A pressure relief valve comprises a valve housing, a valve core plate and a rotating shaft passing through the valve housing and the valve core plate, wherein the valve housing and the valve core plate are both provided with through holes, the valve housing is in air-tight contact with the valve core plate or in air-tight contact with the valve core plate through an air pipe, the rotating shaft is fixedly connected to the valve core plate and drives the valve core plate to rotate, and the rotation trajectory of the through hole on the valve core plate overlaps with the through hole on the valve housing.
[0006] Furthermore, the valve housing and the valve core plate are in airtight contact in an area other than the through hole or in airtight contact through an air pipe.
[0007] Furthermore, the valve housing includes an inner housing and an outer housing, and the valve core plate is arranged between the inner housing and the outer housing. Preferably, the valve core plate is in airtight contact with the inner housing except for the through-holes, and the valve core plate is in airtight contact with the outer housing except for the through-holes directly or through an air pipe. Whether to set up an air pipe mainly depends on the thickness requirement of the oxygen chamber applicable to the pressure relief valve. If the thickness of the oxygen chamber is small, there is no need to set up an air pipe, and the valve core plate is in direct airtight contact with the outer housing except for the through-holes. If the thickness of the oxygen chamber is wide, an air pipe is required, and the valve core plate is in airtight contact with the outer housing except for the through-holes through the air pipe.
[0008] Further, the valve housing further comprises an intermediate housing, the intermediate housing being located between the inner housing and the outer housing, and the valve core plate being arranged between the intermediate housing and the inner housing or between the intermediate housing and the outer housing. Preferably, the valve core plate is arranged between the intermediate housing and the inner housing. The inner housing, the valve core plate and the intermediate housing are in airtight contact in the area other than the through hole. The area other than the through hole between the valve core plate and the outer housing is in airtight contact through the air pipe.
[0009] Further, one end of the air pipe is in airtight contact with the valve core plate, and the other end is connected to the through hole on the outer shell. Preferably, when the valve core plate is in airtight contact with the valve housing through the air pipe, one end of the air pipe is in airtight contact with the valve core plate, and the other end is connected to the through hole on the outer shell. And the outer wall of the air pipe is in airtight contact with the inner wall of the through hole on the outer shell.
[0010] Furthermore, the pressure relief valve further comprises a muffler, which is arranged on the outer surface of the outer shell and communicated with the air pipe. Preferably, the muffler is threadedly connected to the air pipe.
[0011] Furthermore, sealing rings are provided between the inner shell, the valve core plate, the intermediate shell and the outer shell. Preferably, a first sealing ring is provided between the inner shell and the valve core plate, and between the valve core plate and the intermediate shell. The first sealing ring is provided in grooves relatively provided in the inner shell, the valve core plate and the intermediate shell. A second sealing ring is provided between the inner shell and the intermediate shell, and between the intermediate shell and the outer shell. The second sealing ring is provided in a receiving groove between the inner shell, the intermediate shell and the outer shell. The airtight contact between the valve core plate and the valve shell is achieved by providing the first sealing ring and the second sealing ring.
[0012] Further, the rotating shaft is in airtight contact with the intermediate housing and the inner housing. Preferably, a third sealing ring is provided between the rotating shaft and the intermediate housing and the inner housing. The third sealing ring is provided in a groove between the rotating shaft and the intermediate housing and the inner housing. The airtight contact between the rotating shaft and the intermediate housing and the inner housing is achieved by providing the third sealing ring.
[0013] Furthermore, a through hole is provided on the valve housing, and a wire sealing joint is provided in the through hole.
[0014] Furthermore, both ends of the rotating shaft are respectively connected with handles.
[0015] One or more technical solutions provided in the present invention have at least the following technical effects or advantages:
[0016] 1. The utility model provides a pressure relief valve, wherein both ends of the rotating shaft are respectively connected with an inner handle and an outer handle. The pressure relief valve can be opened and closed by the inner or outer handle, and is easy to use.
[0017] 2. The utility model provides a pressure relief valve, which is provided with a valve core plate, and the pressure relief of the hyperbaric oxygen chamber is achieved through the through holes on the valve core plate and the valve housing, wherein the through holes can be set to a larger diameter, thereby having the advantages of rapid exhaust and low noise.
[0018] 3. The utility model provides a pressure relief valve, in which the valve housing includes an inner housing, an intermediate housing and an outer housing, so that the valve housing structure is stable. At the same time, the pressure relief valve can be embedded in the cabin wall when in use, with a small protrusion from the cabin wall, thus saving installation space. A muffler is installed on the pressure relief valve to effectively reduce exhaust noise. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 A three-dimensional diagram of a pressure relief valve according to an embodiment of the present application;
[0020] Figure 2 This is a front view of the pressure relief valve according to an embodiment of the present application;
[0021] Figure 3 For the embodiment of this application Figure 2 A cross-sectional view of the pressure relief valve along line AA is shown;
[0022] Figure 4 This is an exploded view of the pressure relief valve according to an embodiment of the present application.
[0023] The accompanying drawings are marked as follows: 1. inner shell; 2. valve core plate; 3. intermediate shell; 4. outer shell; 5. rotating shaft; 6. air pipe; 7. muffler; 8. first sealing ring; 9. second sealing ring; 10. third sealing ring; 11. inner handle; 12. outer handle; 13. through hole; 14. wire sealing joint; 15. first through hole; 16. second through hole; 17. third through hole; 18. fourth through hole. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Generally, the components of the embodiment of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0026] It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In the description of the utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the utility model 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 the utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0027] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0028] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0029] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.
[0030] Example:
[0031] A pressure relief valve, such as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, it includes a valve housing, a valve core plate 2 and a rotating shaft 5 that passes through the valve housing and the valve core plate 2. The valve housing and the valve core plate 2 are both provided with through holes, wherein the through holes can achieve a larger diameter, thereby having the advantages of rapid exhaust and low noise. The size of the specific through hole diameter can be selected based on the actual product use requirements. The valve housing and the valve core plate 2 are in airtight contact, that is, the valve housing and the valve core plate are in airtight contact in the area other than the through hole or in airtight contact through the air pipe. The rotating shaft 5 is fixedly connected to the valve core plate 2 and drives the valve core plate 2 to rotate, and the rotation trajectory of the through hole on the valve core plate 2 overlaps with the through hole on the valve housing. The two ends of the rotating shaft 5 are respectively connected to the inner handle 11 and the outer handle 12. The two ends of the rotating shaft 5 are respectively connected to the inner handle 11 and the outer handle 12, and the pressure relief valve can be opened and closed by the inner or outer handle, which is convenient to use.
[0032] Further, the valve housing includes an inner housing 1 and an outer housing 4, and the valve core plate 2 is arranged between the inner housing 1 and the outer housing 4. Preferably, the valve core plate 2 is in airtight contact with the inner housing 1 except for the through hole, and the valve core plate 2 is in airtight contact with the outer housing 4 except for the through hole directly or through the air pipe 6. Whether to set the air pipe 6 mainly depends on the thickness requirement of the oxygen chamber applicable to the pressure relief valve. If the thickness of the oxygen chamber is small, the air pipe 6 is not required, and the valve core plate 2 is in airtight contact with the outer housing 4 except for the through hole directly. If the thickness of the oxygen chamber is wide, the air pipe 6 is required, and the valve core plate 2 is in airtight contact with the outer housing 4 except for the through hole through the air pipe 6. The length of the air pipe is selected based on the thickness of the applicable oxygen chamber wall.
[0033] The valve housing further comprises an intermediate housing 3, the intermediate housing 3 being located between the inner housing 1 and the outer housing 4, and the valve core plate 2 being arranged between the inner housing 1 and the intermediate housing 3 or between the intermediate housing 3 and the outer housing 4. Preferably, the valve core plate 2 is arranged between the intermediate housing 3 and the inner housing 1. And the areas between the inner housing 1, the valve core plate 2 and the intermediate housing 3 except for the through hole are in airtight contact. The areas between the valve core plate 2 and the outer housing 4 except for the through hole are in airtight contact through the air pipe 6. A first sealing ring 8 is arranged between the inner housing 1 and the valve core plate 2, and between the valve core plate 2 and the intermediate housing 3. More preferably, the first sealing ring 8 is a butterfly valve sealing ring. Grooves are arranged oppositely on the inner housing 1 and the intermediate housing 3, and the first sealing ring 8 is arranged in the groove. The inner housing 1 and the intermediate housing 3 are fixedly connected by bolts, and a second sealing ring 9 is arranged between the inner housing 1 and the intermediate housing 3, and on the side opposite to the intermediate housing 3 and the outer housing 4. The inner shell, the intermediate shell and the outer shell are in airtight contact. The second sealing ring 9 is arranged in the accommodating grooves provided on the inner shell 1, the intermediate shell 3 and the outer shell 4. The rotating shaft 5 is in airtight contact with the intermediate shell 3 and the inner shell 1. Preferably, a third sealing ring 19 is arranged between the rotating shaft 5 and the intermediate shell 3 and the inner shell 1. The third sealing ring 19 is arranged in the groove between the rotating shaft 5 and the intermediate shell 3 and the inner shell 1. The airtight contact between the rotating shaft 5 and the intermediate shell 3 and the inner shell 1 is achieved by the third sealing ring 19.
[0034] Furthermore, a through hole 13 is provided on the valve housing, and a wire sealing joint 14 is provided in the through hole 13. The through hole 13 can be provided on the inner housing 1, or on the intermediate housing 3 and / or the outer housing 4, and those skilled in the art can design it based on the use requirements of the device using the pressure relief valve. The through holes on the inner housing 1, the intermediate housing 3 and the outer housing 4 are respectively named as the first through hole 15, the second through hole 16 and the third through hole 17, and the through hole on the valve core plate 2 is named as the fourth through hole 18.
[0035] When the pressure relief valve is not provided with an air pipe, during use, when pressure relief is required, the handle is turned to drive the rotating shaft 5 to rotate, and the rotating shaft 5 drives the valve core plate 2 to rotate, so that the through hole on the valve core plate 2 overlaps with the through hole on the valve housing to achieve communication, that is, the first through hole 15, the second through hole 16, the third through hole 17 and the fourth through hole 18 are connected, so that the gas in the pressure relief chamber is discharged through the first through hole 15, the fourth through hole 18, the second through hole 16 and the third through hole 17 in sequence. When the hyperbaric oxygen chamber is in use, the handle is turned to drive the rotating shaft 5 to rotate, so that the non-through hole area of the valve core plate 2 is located between the through holes of the inner housing 1, the intermediate housing 3 and the outer housing 4. At this time, under the action of the first sealing ring 8, the second sealing ring 9 and the third sealing ring 19, the inner housing 1, the valve core plate 2 and the intermediate housing 3 are in airtight contact. The hyperbaric oxygen chamber is in a sealed state.
[0036] When the pressure relief valve is provided with an air pipe, during use, when pressure relief is required, the handle is turned to drive the rotating shaft 5 to rotate, and the rotating shaft 5 drives the valve core plate 2 to rotate, so that the through hole on the valve core plate 2 overlaps with the through hole on the valve housing to achieve communication, that is, the first through hole 15, the second through hole 16, the third through hole 17 and the fourth through hole 18 are connected, so that the gas in the pressure relief chamber passes through the first through hole 15, the fourth through hole 18, the second through hole 16, and the air pipe 6 in sequence and is discharged after being silenced by the muffler 7. When the hyperbaric oxygen chamber is in use, the handle is turned to drive the rotating shaft 5 to rotate, so that the non-through hole area of the valve core plate 2 is located between the through holes of the inner housing 1, the intermediate housing 3 and the outer housing 4. At this time, under the action of the first sealing ring 8, the second sealing ring 9 and the third sealing ring 19, the inner housing 1, the valve core plate 2 and the intermediate housing 3 are in airtight contact. The hyperbaric oxygen chamber is in a sealed state.
[0037] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.
[0038] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.
Claims
1. A pressure relief valve, comprising a valve housing, a valve core plate and a rotating shaft passing through the valve housing and the valve core plate, characterized in that: The valve housing and the valve core plate are both provided with through holes, the valve housing and the valve core plate are in air-tight contact or in air-tight contact through an air pipe, the rotating shaft is fixedly connected to the valve core plate and drives the valve core plate to rotate, and the rotation trajectory of the through hole on the valve core plate overlaps with the through hole on the valve housing.
2. The pressure relief valve according to claim 1, characterized in that: The valve housing comprises an inner housing and an outer housing, and the valve core plate is arranged between the inner housing and the outer housing.
3. The pressure relief valve according to claim 2, characterized in that: The valve housing further comprises an intermediate housing, wherein the intermediate housing is located between the inner housing and the outer housing, and the valve core plate is arranged between the intermediate housing and the inner housing or between the intermediate housing and the outer housing.
4. The pressure relief valve according to claim 2 or 3, characterized in that: One end of the air pipe is in airtight contact with the valve core plate, and the other end is connected to the through hole on the outer shell.
5. The pressure relief valve according to claim 4, characterized in that: The pressure relief valve also includes a muffler, which is arranged on the outer surface of the outer shell and is connected to the air pipe.
6. The pressure relief valve according to claim 3, characterized in that: Sealing rings are arranged between the inner shell, the valve core plate, the intermediate shell and the outer shell.
7. The pressure relief valve according to claim 3, characterized in that: The rotating shaft is in airtight contact with the intermediate shell and the inner shell.
8. The pressure relief valve according to claim 1, characterized in that: The valve housing is provided with a through hole, and a wire sealing joint is arranged in the through hole.
9. The pressure relief valve according to claim 1, characterized in that: Both ends of the rotating shaft are respectively connected with handles.