Inflatable sealing ring

Abstract

The utility model discloses an inflation sealing ring which comprises a sealing ring body, an inflation pipeline and an electromagnetic valve. The sealing ring body comprises an inflation cavity provided with an inflation inlet, a mounting flange connected with the rear end face of the inflation cavity and a sealing flange connected with the front end face of the inflation cavity. The inflation cavity is in a backward concave shape before being inflated and is in a forward protruding convex shape after being inflated. One end of the inflation pipeline is communicated with the inflation inlet, an electromagnetic valve is installed on the inflation pipeline, and the other end of the inflation pipeline is an air inlet. The sealing ring body installed on the periphery of the door opening is inflated, so that the sealing ring body expands and abuts against the movable door, and therefore the effects of multiple sealing and air leakage prevention are achieved.

Description

Technical Field

[0001] The utility model relates to an inflatable sealing ring which is suitable for sealing between a movable door and a door opening and belongs to the technical field of sealing equipment. Background Art

[0002] Inflatable sealing rings are primarily made of highly elastic and ductile rubber. They feature a shaped hollow cavity and expand to create a seal when inflated, returning to their original shape when deflated. This creates a flexible seal. For example, due to precision machining, doors and door frames can become deformed over time, creating gaps between them. Inflatable sealing rings can seal these gaps. Inflatable sealing rings are widely used in chemical reactors, steam rooms, ovens, fire trucks, aircraft cabin door seals, and more.

[0003] Existing inflatable sealing rings typically use a valve core to prevent air leakage. This approach works well for applications requiring long-term sealing, but is unsuitable for applications such as movable doors, which require frequent seal changes. Furthermore, movable doors require the door body to compress the sealing ring to achieve a seal, resulting in a complex compression mechanism. Furthermore, if a movable door moves a long distance, it can easily fall due to its own gravity, making it difficult to secure the inflatable sealing ring, resulting in poor sealing and prone to air leakage.

[0004] Therefore, it is urgent to design a new type of inflatable sealing ring to achieve the purpose of sealing without moving the door to compress the sealing ring. Summary of the Invention

[0005] In response to the above-mentioned existing technical problems, the utility model provides an inflatable sealing ring, which achieves the technical purpose of multiple sealing and preventing air leakage by inflating the sealing ring body installed around the door opening so that it expands and supports the movable door.

[0006] In order to achieve the above technical purpose, the utility model provides an inflatable sealing ring, comprising a sealing ring body, an inflation pipe, and a solenoid valve;

[0007] The sealing ring body includes an inflation cavity with an inflation port, a mounting rib connected to the rear end face of the inflation cavity, and a sealing rib connected to the front end face of the inflation cavity; the inflation cavity is in a concave shape before inflation and in a convex shape after inflation;

[0008] One end of the inflation pipe is connected to the inflation port, on which a solenoid valve is installed, and the other end is the air inlet.

[0009] Furthermore, the utility model provides that a pressure regulating valve and a digital pressure gauge are installed on the inflation pipe, and the digital pressure gauge is located between the solenoid valve and the pressure regulating valve.

[0010] The utility model further provides that the inflation cavity includes two parallel supporting edges and a folding edge connecting the two supporting edges, and the rear end surfaces of the two supporting edges are connected to a mounting rib, and the front end surface of the folding edge is connected to a sealing rib;

[0011] The folded edge is sunken between the two supporting edges before inflation and protrudes in front of the two supporting edges during inflation.

[0012] Furthermore, the present invention provides that the front end surface of the sealing rib is provided with serrations.

[0013] Furthermore, the present invention provides that the sealing ring body is made of silicone material.

[0014] In summary, the present invention achieves the effect of sealing the movable door without the door body pressing the sealing ring through a new sealing pressure control method and a control method for the expansion and retraction of the sealing ring, and is suitable for sealing between the movable door and the door opening.

[0015] Compared with the existing technology, the technical advantages of this utility model are:

[0016] 1. Compared with the existing valve core method, the solenoid valve of the utility model can flexibly control the expansion and retraction of the sealing ring body. Even if there is a slight leak in the inflatable sealing ring, the overall sealing effect can be ensured not to be affected.

[0017] 2. The pressure regulating valve of the present invention can freely control the size of the sealing pressure, which is very helpful for pressure-sensitive applications and is also conducive to extending the service life of the sealing ring body.

[0018] 3. The inflatable cavity of the sealing ring body of the utility model is a concave shape before inflation and a convex shape when inflation. In addition, the folded edge of the inflatable cavity can increase the expansion and deformation of the inflatable cavity, which is conducive to improving the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 for Figure 1 Schematic diagram of the structure of the sealing ring body cross section in the AA direction before inflation;

[0021] Figure 3 for Figure 1 A schematic diagram of the structure of the sealing ring body cross section in the AA direction after inflation;

[0022] Figure 4 This is a schematic diagram of the assembly of the sealing ring body of the utility model applied to a movable door;

[0023] Figure 5 for Figure 4 Schematic diagram of the partial structure of the sliding door;

[0024] Figure 6 for Figure 4 Installation diagram of the middle sealing ring body;

[0025] Figure 7 This is a cross-sectional schematic diagram of the sealing ring body of the present invention applied to a movable door;

[0026] In the figure: 1. Sealing ring body, 2. Pressure regulating valve, 3. Solenoid valve, 4. Air inlet, 5. Digital pressure gauge, 6. Mounting rib, 7. Inflatable chamber, 8. Sealing rib, 9. Folding edge, 10. Support edge, 11. Sliding door, 12. Door glass, 13. Door frame, 14. Glass rib, 15. Door guide rail, 16. Pressure plate. DETAILED DESCRIPTION

[0027] To make the purpose, technical solution, and advantages of the present invention more clear, the following will be combined with the embodiments of the present invention to clearly and completely describe the technical solution of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0028] In the description of this application, the terms "connected" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0029] In the description of this application, "front", "back", "left", "right", "up", "down", etc. are only used to indicate relative position relationships. When the absolute position of the described object changes, the relative position relationship may also change accordingly.

[0030] like Figure 1 As shown, the inflatable sealing ring of the present invention includes a sealing ring body 1, an inflation pipe, and a solenoid valve 3, which are described in detail as follows.

[0031] like Figure 2 、 Figure 3 As shown, the sealing ring body 1 includes an inflation cavity 7, a mounting rib 6 connected to the rear end face of the inflation cavity 7, and a sealing rib 8 connected to the front end face of the inflation cavity 7, and both sides of the mounting rib 6 protrude from both sides of the rear end face of the inflation cavity 7; the inflation cavity 7 is a concave shape that sinks backward before inflation, and a convex shape that protrudes forward after inflation.

[0032] During specific implementation, the sealing ring body 1 is installed and fixed around the door opening, and gas is filled into the inflation chamber 7. The inflation chamber 7 will expand and protrude forward into a convex shape. At this time, the front end surface of the sealing rib 8 can protrude forward and press the movable door 11 used to block the door opening, thereby achieving the purpose of sealing and preventing air leakage.

[0033] like Figure 2 、 Figure 3 As shown, in other embodiments, the front end surface of the sealing rib 8 is provided with serrations to increase the frictional force in contact with the movable door 11 .

[0034] like Figure 2 、 Figure 3 As shown, in other embodiments, the inflation chamber 7 includes two parallel supporting edges 10 and a folded edge 9 connecting the two supporting edges 10. The rear ends of the two supporting edges 10 are connected to the mounting flange 6, and the front ends of the folded edge 9 are connected to the sealing flange 8. In particular, the folded edge 9 is sunken between the two supporting edges 10 before inflation and protrudes in front of the two supporting edges 10 after inflation.

[0035] During specific implementation, the folded edge 9 is used to increase the expansion deformation of the inflation chamber 7 to improve the sealing effect. When the inflation chamber 7 is inflated, the folded edge 9 protrudes forward in front of the two supporting edges 10, that is, the inflation chamber 7 protrudes forward into a convex shape. When the inflation chamber 7 is exhausted, the folded edge 9 will return to its original shape, that is, the inflation chamber 7 sinks backward into a concave shape, causing the sealing ring body 1 to retract to its original shape. In addition, when the folded edge 9 is small in size, the sealing ring body 1 can be inflated with very little air pressure, but accordingly, the life of the sealing ring body 1 will be shortened, and it will be more likely to be broken due to excessive pressure. When the folded edge 9 is large in size, the life of the sealing ring body 1 will be longer, and it will not be easily damaged, but at the same time, a greater air pressure will be required to inflate the sealing ring body 1.

[0036] In addition, in other embodiments, the sealing ring body 1 is made of silicone material to form an elastic inflation cavity 7.

[0037] like Figure 1 As shown, an inflation port is provided on the inflation cavity 7; one end of the inflation pipe is connected to the inflation port, and is connected to a solenoid valve 3, and the other end is an air inlet 4.

[0038] The air inlet 4 is an interface for allowing gas to enter or be discharged through the inflation pipe.

[0039] The solenoid valve 3 is used to inflate or deflate the sealing ring body 1 as needed. When the solenoid valve 3 inflates the sealing ring body 1, the expanded sealing ring body 1 blocks the movable door 11 from opening, effectively sealing the movable door 11. When the solenoid valve 3 deflates the sealing ring body 1, the sealing ring body 1 retracts and no longer blocks the movable door 11, allowing the movable door 11 to open. In specific implementations, the solenoid valve 3 can be the FESTO solenoid valve VUVG-L10-B52-T-M5-1P3.

[0040] like Figure 1 As shown, in other embodiments, the inflation pipe is further connected to a pressure regulating valve 2 and a digital pressure gauge 5, and the digital pressure gauge 5 is located between the solenoid valve 3 and the pressure regulating valve 2.

[0041] Among them, the pressure regulating valve 2 is used to adjust the sealing pressure of the sealing ring body 1. The air pressure of the sealing ring body 1 is controlled within an appropriate range by the pressure regulating valve 2, which can satisfy the sealing effect and protect the sealing ring body 1 from being broken by the air pressure. In addition, the pressure regulating valve 2 can use a lower inflation pressure while ensuring the sealing effect, thereby maximizing the service life of the sealing ring body 1 and protecting the sealing ring body 1 from being broken. In specific implementation, the pressure regulating valve 2 can adopt the Airtac precision pressure regulating valve GPR30008LJN. In addition, depending on the size of the sealing ring body 1, the pressure range controlled by the pressure regulating valve 2 can be 0.1-1Mpa, for example, the pressure of the sealing ring body 1 is 0.2MPa.

[0042] The digital pressure gauge 5 is used to display and feedback the real-time pressure of the sealing ring body 1. According to the pressure, it can be used to judge whether the sealing effect is normal, whether the sealing ring body 1 is damaged, and other abnormal conditions. In specific implementation, the digital pressure gauge 5 can be an SMC digital pressure gauge ISE20C-R-02-W.

[0043] The working process of the utility model for sealing the movable door 11 and the door opening is as follows: First, Figure 4 As shown, two door rails 15 are installed above and below the door opening, and the movable door 11 is installed between the upper and lower door rails 10 and can move left and right along the door rails 10. When the movable door 11 moves to the left, it can block the door opening. Figure 5 As shown, the sliding door 11 includes a door frame 13 and a door glass 12 , and a glass retaining edge 14 is installed around the door frame 13 , and the glass retaining edge 14 presses and fixes the four sides of the door glass 12 so that the door glass 12 is fixed in the door frame 13 .

[0044] Then, if Figure 6As shown, two parallel pressure plates 16 are installed around the door opening, and the sealing ring body 1 is inserted between the two pressure plates 16. The two pressure plates 16 are used to press and fix the two sides of the installation rib 6 respectively, and the front end face of the sealing rib 8 is facing the movable door 11 to complete the installation and fixation of the sealing ring body 1.

[0045] Then, if Figure 7 As shown, after the movable door 11 is moved to the left, the solenoid valve 3 is opened, and the regulating valve 2 is controlled to inflate the sealing ring body 1 through the air inlet 4 and the inflation pipe to expand the sealing ring body 1. At this time, the inflation cavity 7 protrudes into a convex shape, driving the sealing rib 8 to protrude forward and support the door glass 12 of the movable door 11, thereby achieving multiple sealing of the movable door 11 and preventing air leakage.

[0046] The above is a detailed introduction to the technical solutions provided by the embodiments of the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, based on the idea of ​​the present invention, the technical solutions recorded in the aforementioned embodiments can be modified, or some of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the idea and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An inflatable sealing ring, characterized in that: It includes a sealing ring body, an air filling pipe, and a solenoid valve; The sealing ring body includes an inflation cavity with an inflation port, a mounting rib connected to the rear end face of the inflation cavity, and a sealing rib connected to the front end face of the inflation cavity; the inflation cavity is in a concave shape before inflation and in a convex shape after inflation; One end of the inflation pipe is connected to the inflation port, on which a solenoid valve is installed, and the other end is the air inlet.

2. An inflatable sealing ring according to claim 1, characterized in that: A pressure regulating valve and a digital pressure gauge are also installed on the inflation pipeline, and the digital pressure gauge is located between the solenoid valve and the pressure regulating valve.

3. The inflatable sealing ring according to claim 1, characterized in that: The inflation cavity includes two parallel supporting edges and a folding edge connecting the two supporting edges, and the rear end surfaces of the two supporting edges are connected to a mounting rib, and the front end surface of the folding edge is connected to a sealing rib; The folded edge is sunken between the two supporting edges before inflation and protrudes in front of the two supporting edges during inflation.

4. An inflatable sealing ring according to claim 1 or 3, characterized in that: The front end surface of the sealing rib is provided with serrations.

5. An inflatable sealing ring according to claim 1 or 3, characterized in that: The sealing ring body is made of silicone material.

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