Quick connecting device with good air tightness

Abstract

The utility model relates to the field of safe use of aviation oxygen supply masks, in particular to a quick connecting device with good air tightness. The device comprises a first breather pipe, the outer side of the first breather pipe is fixedly sleeved with a first check ring, one end of the first breather pipe is fixedly provided with a fixing ring, the fixing ring is fixedly provided with a sealing rubber ring, and the outer side of the first breather pipe is movably sleeved with a second check ring. The threaded round shell is matched with the threaded pipe, so that the threaded round shell drives the sealing rubber ring on one side of the first ventilation pipe to extrude towards the interior of the second ventilation pipe, and the sealing rubber ring is in sealing contact with the inner wall of the second ventilation pipe during extrusion; and meanwhile, when a sealing rubber ring is extruded, a circular filter plate in the second vent pipe can be fixed, so that the effect of more convenience in use can be achieved, and meanwhile, the sealing performance of the connecting device can be greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of safe use of aviation oxygen supply masks, in particular to a quick connection device with good air tightness. Background Art

[0002] One of the working principles of gas connectors is sealing. During gas transmission, it is very important to ensure the tightness of the gas to prevent gas leakage and loss. Gas connectors usually use materials such as sealing rings, sealing gaskets or sealants to achieve the sealing effect. When the two connector parts are connected to each other, the sealing material will fill the gap between the connectors to form a sealed airtight passage to ensure that the gas cannot leak out from the connection point. The sealing ring or sealing gasket is usually made of elastic material, which can produce a good sealing effect under the external pressure of the connector. The existing technology uses a spring to squeeze the rubber, which has a poor effect. The spring is in a tension state for a long time, which will cause the tension of the spring to decrease, and thus the sealing state cannot be achieved. Utility Model Content

[0003] The purpose of the utility model is to provide a quick connection device with good air tightness to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides a quick connection device with good air tightness, including a first ventilation pipe, an outer fixed sleeve of the first ventilation pipe is provided with a first retaining ring, one end of the first ventilation pipe is fixedly installed with a fixing ring, a sealing rubber ring is fixedly installed on the fixing ring, an outer movable sleeve of the first ventilation pipe is provided with a second retaining ring, a threaded round shell is fixedly installed on the second retaining ring, and one side of the threaded round shell is fixedly installed on the second retaining ring, a threaded pipe is connected to the inner thread of the threaded round shell, and a second ventilation pipe is fixedly installed inside the threaded pipe.

[0005] As a further improvement of the technical solution, the first retaining ring is used to limit the position of the second retaining ring, and the second retaining ring is used to enable the threaded shell to move flexibly.

[0006] As a further improvement of the technical solution, the fixing ring is used to fix the sealing rubber ring. When the threaded round shell rotates on the threaded tube, the fixing ring applies a thrust to the sealing rubber ring.

[0007] As a further improvement of the technical solution, the sealing rubber ring cooperates with the second ventilation pipe to ensure sealing contact between the sealing rubber ring and the second ventilation pipe.

[0008] As a further improvement of the technical solution, the threaded round shell and the threaded tube cooperate with each other so that the sealing rubber ring on the fixing ring is squeezed toward the inside of the second ventilation pipe.

[0009] As a further improvement of the technical solution, a circular filter plate is slidably installed in the second ventilation pipe, and a retaining ring is fixedly installed on the inner wall of the second ventilation pipe near one end, and the retaining ring is used to limit the circular filter plate.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] In the quick connection device with good air tightness, the threaded round shell is connected to the threaded tube, so that the threaded round shell drives the sealing rubber ring on one side of the first ventilation tube to be squeezed into the inside of the second ventilation tube. When squeezing, the sealing rubber ring is in sealing contact with the inner wall of the second ventilation tube. At the same time, the sealing rubber ring can fix the circular filter plate in the second ventilation tube when squeezing, thereby achieving a more convenient use effect and greatly improving the sealing performance of the connection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a cross-sectional structural schematic diagram of the utility model.

[0014] The meaning of each number in the figure is:

[0015] 1. First ventilation pipe; 2. First retaining ring; 3. Fixed ring; 4. Sealing rubber ring; 5. Second retaining ring; 6. Threaded round shell; 7. Second ventilation pipe; 8. Retaining ring; 9. Round filter plate; 10. Threaded pipe. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0018] Example 1

[0019] See also Figure 1-Figure 2 As shown, the present embodiment provides a quick connection device with good air tightness, including a first ventilation pipe 1, a first retaining ring 2 is provided on the outer fixed sleeve of the first ventilation pipe 1, a fixing ring 3 is fixedly installed at one end of the first ventilation pipe 1, a sealing rubber ring 4 is fixedly installed on the fixing ring 3, the fixing ring 3 is used to fix the sealing rubber ring 4, and the fixing ring 3 is used to apply a thrust to the sealing rubber ring 4, and the setting of the fixing ring 3 can prevent the sealing rubber ring 4 from falling off when being squeezed, a second retaining ring 5 is provided on the outer movable sleeve of the first ventilation pipe 1, the first retaining ring 2 is used to limit the second retaining ring 5, and the second retaining ring 5 is used to move the threaded round shell 6, a threaded round shell 6 is fixedly installed on the second retaining ring 5, and one side of the threaded round shell 6 is fixedly installed on the second retaining ring 5, the threaded round shell 6 is internally threadedly connected with a threaded pipe 10, and the threaded pipe 1 0 is fixedly installed with a second ventilation pipe 7, and through the cooperation of the first retaining ring 2 and the second retaining ring 5, when the threaded circular shell 6 is rotating, the first ventilation pipe 1 is squeezed into the threaded tube 10, and the sealing rubber ring 4 cooperates with the second ventilation pipe 7 to make a sealing contact between the sealing rubber ring 4 and the second ventilation pipe 7, thereby achieving a sealing effect, the threaded circular shell 6 and the threaded tube 10 cooperate, the sealing rubber ring 4 squeezes the second ventilation pipe 7, and a circular filter plate 9 is slidably installed in the second ventilation pipe 7, and a retaining ring 8 is fixedly installed on the inner wall of the second ventilation pipe 7 near one end, and the retaining ring 8 is used to limit the circular filter plate 9, and under the action of the sealing rubber ring 4 and the retaining ring 8, the circular filter plate 9 in the second ventilation pipe 7 can be fixed, thereby preventing the circular filter plate 9 from shaking in the second ventilation pipe 7.

[0020] In summary, the working principle of this solution is as follows:

[0021] When the airtight quick connection device of this embodiment is used, first, the circular filter plate 9 is placed into the second ventilation pipe 7, and the sealing rubber ring 4 on the first ventilation pipe 1 is aligned with the connection port of the second ventilation pipe 7. Then, the threaded circular shell 6 is rotated on the outside of the threaded tube 10, and at the same time, the sealing rubber ring 4 on the first ventilation pipe 1 is driven to be squeezed into the second ventilation pipe 7. When the sealing rubber ring 4 is squeezed inwardly, it contacts the circular filter plate 9, and when the threaded circular shell 6 cannot rotate, the circular filter plate 9 in the second ventilation pipe 7 can be fixed.

[0022] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A quick connection device with good airtightness, comprising a first vent pipe (1), characterized in that: The first ventilation pipe (1) is provided with a first retaining ring (2) on the outer fixed sleeve, a fixing ring (3) is fixedly mounted on one end of the first ventilation pipe (1), a sealing rubber ring (4) is fixedly mounted on the fixing ring (3), a second retaining ring (5) is provided on the outer movable sleeve of the first ventilation pipe (1), a threaded round shell (6) is fixedly mounted on the upper part of the second retaining ring (5), and one side of the threaded round shell (6) is fixedly mounted on the second retaining ring (5), the threaded round shell (6) is internally threadedly connected to a threaded pipe (10), and a second ventilation pipe (7) is fixedly mounted inside the threaded pipe (10).

2. The quick connection device with good airtightness according to claim 1, characterized in that: The first retaining ring (2) is used to limit the position of the second retaining ring (5), and the second retaining ring (5) is used to enable the threaded shell to move flexibly.

3. The quick connection device with good airtightness according to claim 2, characterized in that: The fixing ring (3) is used to fix the sealing rubber ring (4); when the threaded round shell (6) rotates on the threaded tube (10), the fixing ring (3) applies a thrust to the sealing rubber ring (4).

4. The quick connection device with good airtightness according to claim 3, characterized in that: The sealing rubber ring (4) cooperates with the second ventilation pipe (7) so that the sealing rubber ring (4) and the second ventilation pipe (7) are in sealing contact.

5. The quick connection device with good airtightness according to claim 4, characterized in that: The threaded round shell (6) and the threaded tube (10) cooperate to allow the sealing rubber ring (4) on the fixing ring (3) to be pressed toward the interior of the second ventilation tube (7).

6. The quick connection device with good airtightness according to claim 5, characterized in that: A circular filter plate (9) is slidably mounted in the second ventilation pipe (7), and a retaining ring (8) is fixedly mounted on the inner wall of the second ventilation pipe (7) near one end, the retaining ring (8) being used to limit the circular filter plate (9).

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