A quick connector for oxygen filling and a structure to prevent misoperation.

Abstract

This utility model relates to the field of oxygen filling technology, specifically a quick connector and anti-misoperation structure for oxygen filling. It includes an filling tube, an inlet tube inserted into the outlet end of the filling tube, a second sealing gasket fixedly installed at the connection between the inlet tube and the filling tube, a first sealing gasket fixedly installed on the inner wall of the filling tube at the connection with the inlet tube, which cooperates with the second sealing gasket, a fixing mechanism fixedly installed on the filling tube, and a support rod and a convex ball arranged inside the inlet tube via an inlet mesh plate. A perforated baffle plate cooperating with the convex ball is fixedly installed inside the inlet tube. The structure composed of the inlet mesh plate, support rod, convex ball, perforated baffle plate, and third spring inside the inlet tube of this device can automatically open under pressure during filling and automatically seal after filling, further reducing the possibility of oxygen leakage and providing multiple safety guarantees for the oxygen filling process.

Description

Technical Field

[0001] This utility model relates to the field of oxygen filling technology, specifically to a quick connector and anti-misoperation structure for oxygen filling. Background Technology

[0002] Oxygen delivery and filling are crucial in many fields, including oxygen filling and related industrial production and medical assistance. Quick couplings, as key components connecting oxygen generators, filling equipment and oxygen pipes, directly affect the safety, efficiency and stability of oxygen filling.

[0003] Traditional connection structures used for oxygen filling have many shortcomings. Regarding sealing, many traditional connectors rely solely on simple rubber rings or other single sealing methods. Under prolonged use or when exposed to high-pressure oxygen, these rubber rings are prone to aging and wear, leading to incomplete seals and oxygen leaks. Furthermore, traditional connectors often use simple plug-and-play connections, lacking effective fixing and locking mechanisms. During filling, the flow of oxygen generates impact forces, or equipment vibrations can easily cause the connectors to loosen or even detach, interrupting the filling process and affecting work efficiency. Sudden oxygen ejection can also pose a hazard. In addition, in complex operating environments, operators may inadvertently or improperly begin oxygen filling without properly connecting or securing the connector, which can easily lead to oxygen leaks and safety accidents. Therefore, we propose a quick-connect connector for oxygen filling and a structure to prevent misoperation. Utility Model Content

[0004] The purpose of this invention is to provide a quick connector and a misoperation prevention structure for oxygen filling, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes an inflation tube, an air inlet tube inserted into the air outlet end of the inflation tube, a second sealing gasket fixedly installed at the connection between the air inlet tube and the inflation tube, a first sealing gasket cooperating with the second sealing gasket fixedly installed at the connection between the inflation tube and the air inlet tube, a fixing mechanism fixedly installed on the inflation tube, an air inlet mesh plate fixedly installed inside the air inlet tube, a support rod slidably mounted on the air inlet mesh plate, a convex ball fixedly installed at the inner end of the support rod, a perforated baffle cooperating with the convex ball fixedly installed inside the air inlet tube, and a third spring sleeved on the outer side of the support rod, one end of the third spring fixedly connected to the convex ball, and the other end of the third spring fixedly connected to the air inlet mesh plate.

[0006] Preferably, a fixing mechanism is fixedly installed on the inflation tube. The fixing mechanism includes an installation plate sleeved on the outer wall of the inflation tube. Several fixing plates are evenly fixedly installed on the side wall of the installation plate. A through hole is provided through the fixing plate. A sliding rod is provided in the through hole. A lifting plate is fixedly installed at the bottom end of the sliding rod. A locking block is fixedly installed on the outer wall of the lifting plate. An insertion hole for cooperating with the locking block is opened on the side wall of the air inlet tube. The fixing plate is also rotatably provided with a threaded rod through the lifting plate and threadedly connected to the lifting plate. An adjustment mechanism for driving the threaded rod to rotate is provided on the installation plate.

[0007] Preferably, the adjusting mechanism includes a gear ring rotatably mounted on the mounting plate, a mounting shell fixedly mounted on the outer wall of the fixing plate, a threaded rod penetrating the mounting shell and extending into the interior of the mounting shell, a worm gear located inside the mounting shell on the threaded rod and connected by a key, and a worm rotatably mounted on the mounting shell, the worm and the worm gear meshing with each other.

[0008] Preferably, a first bevel gear is connected to the outer end of the worm gear via a key, and a second bevel gear is fixedly installed on the inner wall of the gear ring, with the second bevel gear meshing with the first bevel gear.

[0009] Preferably, the inflation tube is further provided with a limiting mechanism that cooperates with the toothed ring. The limiting mechanism includes a fixed frame that is fixedly installed on the inflation tube, an mounting rod that is slidably installed on the fixed frame, and a limiting block that cooperates with the toothed ring that is fixedly installed at the bottom end of the mounting rod.

[0010] Preferably, the inflation pipe is fixedly connected to the oxygen generator, and the outlet end of the air inlet pipe is fixedly connected to the oxygen pipe.

[0011] Preferably, a first spring is sleeved on the outer side of the mounting rod, one end of the first spring is fixedly connected to the fixing frame, and the other end of the first spring is fixedly connected to the limiting block.

[0012] Preferably, the side wall of the intake pipe is further provided with a limiting mechanism for use with the locking block. The limiting mechanism includes several cavities opened on the side wall of the intake pipe, a telescopic rod is fixedly installed in the cavity, a slide plate is fixedly installed at the end of the telescopic arm of the telescopic rod, a limiting rod is fixedly installed on the side wall of the slide plate, and a limiting groove is opened on the side wall of the locking block for use with the limiting rod.

[0013] Preferably, a second spring is sleeved on the outer side of the telescopic rod, one end of the second spring is fixedly connected to the slide plate, and the other end of the second spring is fixedly connected to the inner wall of the cavity.

[0014] Preferably, a limiting plate is fixedly installed at the outer end of the slide bar.

[0015] Compared with existing technologies, the beneficial effects of this utility model are as follows: By setting a second sealing gasket and a matching first sealing gasket at the connection between the air inlet pipe and the inflation pipe, the double sealing design greatly enhances the sealing performance of the connection, effectively preventing oxygen leakage during filling and transportation. This avoids waste of oxygen resources, reduces operating costs, and eliminates safety hazards such as fires and explosions that may be caused by oxygen leakage, ensuring a safe operating environment. The adjusting mechanism drives the threaded rod to rotate, thereby moving the lifting plate and allowing the locking block to be precisely inserted into the insertion hole on the side wall of the air inlet pipe, achieving a stable connection between the inflation pipe and the air inlet pipe. This connection method can effectively resist oxygen flow. The system mitigates the impact of shocks and equipment vibrations, preventing loosening or detachment of the joints and ensuring a continuous and stable oxygen filling process, thus improving work efficiency. Furthermore, the transmission of the gear ring, worm gear, and bevel gears not only makes operation more convenient and labor-saving, but the self-locking characteristic of the worm gear prevents accidental movement of the locking block during filling, ensuring connection reliability. Simultaneously, the limiting mechanisms on the filling pipe that engage with the gear ring and on the side wall of the inlet pipe that engage with the locking block further lock and confirm the connection status, preventing operators from initiating filling without proper connection due to negligence or improper operation. This standardizes the operating procedure and reduces operational risks.

[0016] In addition, the structure consisting of an air intake mesh plate, support rod, convex ball, perforated baffle and third spring inside the air intake pipe can automatically open under pressure during inflation and automatically seal after inflation, further reducing the possibility of oxygen leakage and providing multiple safety guarantees for the oxygen filling process, thus improving the safety, stability and reliability of oxygen filling operations as a whole. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the present invention from another perspective;

[0019] Figure 3 This is a schematic diagram of the internal cross-sectional structure of this utility model;

[0020] Figure 4 For the present utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0021] Figure 5 For the present utility model Figure 1 Enlarged view of the structure at point B in the middle;

[0022] Figure 6 For the present utility model Figure 2 Enlarged view of the structure at point C.

[0023] The components represented by each number in the attached diagram are listed below: 1. Inflation pipe; 2. Inlet pipe; 3. First sealing gasket; 4. Second sealing gasket; 5. Mounting plate; 6. Gear ring; 7. Fixing plate; 8. Lifting plate; 9. Locking block; 10. Slide rod; 11. Limiting plate; 12. Threaded rod; 13. Mounting shell; 14. Worm gear; 15. Worm; 16. First bevel gear; 17. Second bevel gear; 18. Fixing bracket; 19. Mounting rod; 20. Limiting block; 21. First spring; 22. Cavity; 23. Telescopic rod; 24. Slide plate; 25. Limiting rod; 26. Inlet mesh plate; 27. Support rod; 28. Perforated baffle; 29. ​​Convex ball; 30. Second spring; 31. Third spring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This utility model provides a technical solution: such as Figures 1-6 The quick connector and anti-misoperation structure for oxygen filling shown include an inflation tube 1, which is fixedly connected to an oxygen generator. An air inlet tube 2 is inserted into the outlet end of the inflation tube 1. The outlet end of the air inlet tube 2 is fixedly connected to an oxygen tube. A second sealing gasket 4 is fixedly installed at the connection between the air inlet tube 2 and the inflation tube 1. A first sealing gasket 3, which works in conjunction with the second sealing gasket 4, is fixedly installed on the inner wall of the inflation tube 1 at the connection with the air inlet tube 2. Under the action of the first sealing gasket 3 and the second sealing gasket 4, the sealing of the inflation mechanism is ensured, thereby preventing oxygen leakage.

[0026] A fixing mechanism is fixedly installed on the inflation tube 1. The fixing mechanism includes a mounting plate 5 sleeved on the outer wall of the inflation tube 1. Several fixing plates 7 are evenly fixedly installed on the side wall of the mounting plate 5. A through hole is provided through the fixing plate 7, and a sliding rod 10 is installed in the through hole. A lifting plate 8 is fixedly installed at the bottom end of the sliding rod 10. A locking block 9 is fixedly installed on the outer wall of the lifting plate 8. An insertion hole is opened on the side wall of the air inlet tube 2 to cooperate with the locking block 9. At this time, the connection quality between the inflation tube 1 and the air inlet tube 2 is ensured by the action of the locking block 9 and the insertion hole. This ensures the quality of subsequent inflation. The fixed plate 7 is also equipped with a threaded rod 12 that rotates through the bearing. The threaded rod 12 passes through the lifting plate 8 and is threadedly connected to the lifting plate 8. Rotating the threaded rod 12 will move the lifting plate 8, thereby inserting or removing the locking block 9 from the air inlet pipe 2. The mounting plate 5 is equipped with an adjustment mechanism that drives the threaded rod 12 to rotate. A limit plate 11 is fixedly installed at the outer end of the slide rod 10. Under the action of the limit plate 11, the occurrence of the lifting plate 8 falling off is reduced, ensuring the efficiency of the use of the lifting plate 8.

[0027] The adjustment mechanism includes a gear ring 6 rotatably mounted on the mounting plate 5, a mounting shell 13 fixedly mounted on the outer wall of the fixing plate 7, a threaded rod 12 penetrating the mounting shell 13 and extending into the interior of the mounting shell 13, a worm gear 14 connected to the threaded rod 12 via a key inside the mounting shell 13, a worm 15 rotatably mounted on the mounting shell 13, and the worm 15 meshing with the worm gear 14. Rotating the worm 15 will drive the threaded rod 12 to rotate via the worm gear 14, thereby adjusting the position of the locking block 9. In addition, because the worm gear 14 and the worm 15 have a self-locking function, the adjusted position of the locking block 9 can be restricted, thereby ensuring the connection quality between the inflation pipe 1 and the air intake pipe 2. A first bevel gear 16 is connected to the outer end of the worm 15 via a key, and a second bevel gear 17 is fixedly mounted on the inner wall of the gear ring 6, with the second bevel gear 17 meshing with the first bevel gear 16. Rotating the gear ring 6 will drive the threaded rod 12 to rotate via the second bevel gear 17 and the first bevel gear 16, thereby adjusting the locking block 9.

[0028] The inflation tube 1 is also equipped with a limiting mechanism that works in conjunction with the toothed ring 6. The limiting mechanism includes a fixed frame 18 fixedly installed on the inflation tube 1, an mounting rod 19 slidably mounted on the fixed frame 18, and a limiting block 20 that works in conjunction with the toothed ring 6 fixedly installed at the bottom end of the mounting rod 19. Under the action of the limiting block 20, the toothed ring 6 can be limited and fixed, thereby further improving the connection quality between the locking block 9 and the insertion hole. A first spring 21 is sleeved on the outside of the mounting rod 19. One end of the first spring 21 is fixedly connected to the fixed frame 18, and the other end of the first spring 21 is fixedly connected to the limiting block 20. At this time, under the action of the first spring 21, the connection quality between the limiting block 20 and the toothed ring 6 is guaranteed.

[0029] An intake grille 26 is fixedly installed inside the intake pipe 2. A support rod 27 is slidably mounted on the intake grille 26. A convex ball 29 is fixedly installed at the inner end of the support rod 27. A perforated baffle 28 that cooperates with the convex ball 29 is fixedly installed inside the intake pipe 2. Under the action of the convex ball 29 and the perforated baffle 28, the intake pipe 2 can be sealed. A third spring 31 is sleeved on the outside of the support rod 27. One end of the third spring 31 is fixedly connected to the convex ball 29, and the other end of the third spring 31 is fixedly connected to the intake grille 26. Under the action of the third spring 31, the contact quality between the convex ball 29 and the perforated baffle 28 is guaranteed. In actual use, when inflation is performed, oxygen enters the air inlet pipe 2 through the air inlet end of the air inlet pipe 2. At this time, under the action of pressure, the convex ball 29 is pushed open, and oxygen can then enter the oxygen pipe through the perforated baffle 28 and the air inlet mesh plate 26. After inflation is completed, under the action of the third spring 31, the convex ball 29 re-contacts the perforated baffle 28, thereby sealing the perforated baffle 28, reducing the occurrence of oxygen leakage, and ensuring the quality of inflation.

[0030] The intake pipe 2 is also provided with a limiting mechanism that works in conjunction with the locking block 9. The limiting mechanism includes several cavities 22 opened on the side wall of the intake pipe 2. A telescopic rod 23 is fixedly installed in the cavity 22. A slide plate 24 is fixedly installed at the end of the telescopic arm of the telescopic rod 23. A limiting rod 25 is fixedly installed on the side wall of the slide plate 24. A limiting groove is opened on the side wall of the locking block 9 to work in conjunction with the limiting rod 25. At this time, under the action of the limiting rod 25 and the limiting groove, the connection quality between the locking block 9 and the intake pipe 2 is guaranteed. A second spring 30 is sleeved on the outside of the telescopic rod 23. One end of the second spring 30 is fixedly connected to the slide plate 24, and the other end of the second spring 30 is fixedly connected to the inner wall of the cavity 22. At this time, under the action of the second spring 30, the connection quality between the limiting rod 25 and the limiting groove is guaranteed.

[0031] Working principle: First, connect the inflation tube 1 and the air inlet tube 2. Insert the air inlet tube 2 into the air outlet end of the inflation tube 1. At this time, the first sealing gasket 3 and the second sealing gasket 4 cooperate with each other to ensure the sealing of the connection and prevent oxygen leakage.

[0032] Next, the connection is strengthened using a fixing mechanism. Rotating the gear ring 6 on the mounting plate 5 causes the second bevel gear 17 on the inner wall to rotate. The second bevel gear 17 meshes with the first bevel gear 16, causing the worm gear 15 to rotate. The worm gear 15 meshes with the worm wheel 14, which in turn causes the threaded rod 12 to rotate. Since the threaded rod 12 is threadedly connected to the lifting plate 8, its rotation causes the lifting plate 8 to descend, allowing the locking block 9 to insert into the insertion hole on the side wall of the intake pipe 2. Simultaneously, the second spring 30 on the outside of the telescopic rod 23 pushes the sliding plate 24, causing the limiting rod 25 to insert into the limiting groove on the side wall of the locking block 9, further ensuring the connection quality. At this time, the first spring 21 on the fixing frame 18 pushes the limiting block 20 to limit and fix the gear ring 6, preventing its rotation. The sliding rod 10 and the limiting plate 11 prevent the lifting plate 8 from falling off, ensuring efficiency.

[0033] During inflation, oxygen enters the intake pipe 2 from the inflation pipe 1. The pressure pushes open the convex ball 29 supported by the third spring 31 on the intake mesh plate 26. The oxygen enters the oxygen pipe through the perforated baffle 28 and the intake mesh plate 26. After inflation is completed, the third spring 31 pushes the convex ball 29 to re-contact the perforated baffle 28 to achieve a seal and reduce oxygen leakage.

[0034] To disassemble, pull the mounting rod 19 to disengage the limiting block 20 from the toothed ring 6, and rotate the toothed ring 6 in the opposite direction. Through the aforementioned transmission, the locking block 9 is moved out of the insertion hole, thus separating the inflation tube 1 and the air inlet tube 2. The entire mechanism, through multiple designs including sealing, fixing, and limiting, ensures the safety and efficiency of the inflation process.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quick connector for oxygen filling and a structure to prevent misoperation, comprising a filling tube (1), characterized in that: An air inlet pipe (2) is inserted into the air outlet end of the inflation pipe (1). A second sealing gasket (4) is fixedly installed at the connection between the air inlet pipe (2) and the inflation pipe (1). A first sealing gasket (3) that works with the second sealing gasket (4) is fixedly installed at the connection between the air inlet pipe (2) and the inner wall of the inflation pipe (1). A fixing mechanism is fixedly installed on the inflation pipe (1). An air inlet mesh plate (26) is also fixedly installed inside the air inlet pipe (2). A support rod (27) is slidably installed on the air inlet mesh plate (26). A convex ball (29) is fixedly installed at the inner end of the support rod (27). A perforated baffle (28) that works with the convex ball (29) is fixedly installed inside the air inlet pipe (2). A third spring (31) is sleeved on the outer side of the support rod (27). One end of the third spring (31) is fixedly connected to the convex ball (29), and the other end of the third spring (31) is fixedly connected to the air inlet mesh plate (26).

2. The quick connector and anti-misoperation structure for oxygen filling according to claim 1, characterized in that: A fixing mechanism is fixedly installed on the inflation tube (1). The fixing mechanism includes an installation plate (5) sleeved on the outer wall of the inflation tube (1). Several fixing plates (7) are evenly fixed on the side wall of the installation plate (5). A through hole is provided through the fixing plate (7). A sliding rod (10) is provided in the through hole. A lifting plate (8) is fixedly installed at the bottom end of the sliding rod (10). A locking block (9) is fixedly installed on the outer wall of the lifting plate (8). An insertion hole for cooperating with the locking block (9) is opened on the side wall of the air inlet tube (2). A threaded rod (12) is also provided on the fixing plate (7) through a bearing. The threaded rod (12) passes through the lifting plate (8) and is threadedly connected to the lifting plate (8). An adjustment mechanism for driving the threaded rod (12) to rotate is provided on the installation plate (5).

3. The quick connector and anti-misoperation structure for oxygen filling according to claim 2, characterized in that: The adjustment mechanism includes a gear ring (6) rotatably mounted on the mounting plate (5), a mounting shell (13) fixedly mounted on the outer wall of the fixing plate (7), a threaded rod (12) penetrating the mounting shell (13) and extending into the interior of the mounting shell (13), a worm gear (14) connected to the threaded rod (12) by a key inside the mounting shell (13), and a worm (15) rotatably mounted on the mounting shell (13), the worm (15) meshing with the worm gear (14).

4. The quick connector and anti-misoperation structure for oxygen filling according to claim 3, characterized in that: The outer end of the worm (15) is connected by a key to a first bevel gear (16), and a second bevel gear (17) is fixedly installed on the inner wall of the gear ring (6). The second bevel gear (17) meshes with the first bevel gear (16).

5. The quick connector and anti-misoperation structure for oxygen filling according to claim 1, characterized in that: The inflation tube (1) is also provided with a limiting mechanism that works in conjunction with the toothed ring (6). The limiting mechanism includes a fixed frame (18) fixedly installed on the inflation tube (1), an mounting rod (19) slidably installed on the fixed frame (18), and a limiting block (20) that works in conjunction with the toothed ring (6) fixedly installed at the bottom end of the mounting rod (19).

6. The quick connector and anti-misoperation structure for oxygen filling according to claim 1, characterized in that: The inflation pipe (1) is fixedly connected to the oxygen generator, and the outlet end of the air inlet pipe (2) is fixedly connected to the oxygen pipe.

7. A quick connector for oxygen filling and a misoperation prevention structure according to claim 5, characterized in that: The mounting rod (19) is fitted with a first spring (21) on its outer side. One end of the first spring (21) is fixedly connected to the fixing frame (18), and the other end of the first spring (21) is fixedly connected to the limiting block (20).

8. The quick connector and anti-misoperation structure for oxygen filling according to claim 1, characterized in that: The side wall of the air intake pipe (2) is also provided with a limiting mechanism that works in conjunction with the locking block (9). The limiting mechanism includes several cavities (22) opened on the side wall of the air intake pipe (2). A telescopic rod (23) is fixedly installed in the cavity (22). A sliding plate (24) is fixedly installed at the end of the telescopic arm of the telescopic rod (23). A limiting rod (25) is fixedly installed on the side wall of the sliding plate (24). A limiting groove that works in conjunction with the limiting rod (25) is opened on the side wall of the locking block (9).

9. A quick connector for oxygen filling and a misoperation prevention structure according to claim 8, characterized in that: The telescopic rod (23) is fitted with a second spring (30) on its outer side. One end of the second spring (30) is fixedly connected to the slide plate (24), and the other end of the second spring (30) is fixedly connected to the inner wall of the cavity (22).

10. A quick connector for oxygen filling and a misoperation prevention structure according to claim 2, characterized in that: A limiting plate (11) is fixedly installed at the outer end of the slide bar (10).

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