Medical oxygen valve adapter

Abstract

The utility model relates to a medical oxygen valve conversion connector which comprises a conversion male head, a conversion female head and an elastic quick-insertion assembly. One end of the conversion female head is provided with a containing cavity, and the other end of the conversion female head is provided with female head internal threads in sealed connection with American standard oxygen valve connector external threads; a plurality of through holes which are uniformly distributed in the circumferential direction are formed in the side wall of the accommodating cavity; the conversion male head is coaxially arranged in the accommodating cavity; a plurality of blind holes corresponding to the through holes are formed in the surface of the outer end of the conversion male head, and male head internal threads in sealed connection with the external threads of the national standard oxygen connector are arranged on the end face of the conversion male head; a sealing piece is arranged between the inner end of the conversion male head and the accommodating cavity; the elastic quick-insertion assembly comprises a locking ring arranged on the conversion female head in a sleeving mode and a plurality of clamping columns which are arranged in the locking ring and can penetrate through the through holes to stretch into the blind holes under the action of springs. The utility model not only can realize the assembly of the American standard oxygen valve and the Chinese standard oxygen bottle, but also has the advantages of simplicity and convenience in disassembly and assembly, good sealing performance and the like.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a medical oxygen valve conversion joint. Background Art

[0002] In the medical industry, oxygen valves are a very common tool used to ensure that patients have adequate oxygen supply when needed. However, on the market today, American standard oxygen valves can only be used with corresponding American standard oxygen cylinders, and cannot be used with national standard oxygen cylinders, that is, American standard oxygen valves are incompatible with national standard oxygen cylinders. This incompatibility will lead to limited resource use, increased equipment replacement costs, and the risk of equipment unavailability in emergency situations. Utility Model Content

[0003] The utility model aims to overcome the deficiencies of the prior art and provide a medical oxygen valve conversion joint to achieve assembly of an oxygen valve of American standard and an oxygen cylinder of Chinese standard.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a medical oxygen valve conversion connector, comprising a conversion male head, a conversion female head and an elastic quick-insert component;

[0005] One end of the conversion female connector is provided with a receiving cavity, and the other end is provided with a female connector internal thread that is sealed and connected to the external thread of the American standard oxygen valve connector, and a female connector airway that connects the receiving cavity and the female connector internal thread is provided inside; a plurality of through holes evenly distributed in the circumferential direction are provided on the side wall of the receiving cavity;

[0006] The male conversion head is coaxially arranged in the accommodating cavity, and a male airway connected to the female airway is arranged inside; the axial cross section of the male conversion head is stepped, with the large end facing outward and the small end facing inward; the large end surface is provided with a plurality of blind holes corresponding to the through holes, and the end face is provided with a male internal thread sealed with the external thread of the national standard oxygen connector; a sealing member is arranged between the small end and the accommodating cavity;

[0007] The elastic quick-insertion assembly comprises a lock ring sleeved on the conversion female head, and a plurality of clamping columns arranged in the lock ring and capable of passing through the through hole and extending into the blind hole under the action of a spring.

[0008] Preferably, the shoulder of the conversion male head is provided with a chamfer; the minimum radius of the chamfer is smaller than the distance from the end to the axis when the clamping column is extended into the accommodating cavity to the limit position.

[0009] Preferably, the large end surface of the conversion male head is provided with inclined surfaces on both sides of the circumferential direction of the blind hole; and the large end surface of the conversion male head is provided with inclined grooves extending to the shaft shoulder between adjacent blind holes.

[0010] Preferably, the inner wall of the locking ring is provided with a groove; a positioning platform is provided at the bottom of the groove; the clamping column is arranged in the groove, and a limiting portion larger than the aperture of the through hole is provided at the tail; the spring sleeve is arranged on the positioning platform to drive the clamping column to move outward.

[0011] Preferably, the elastic quick-connect assembly further comprises a connecting ring sleeved on the conversion female head; the locking ring is formed by at least two pieces spliced ​​together and is fixed to the connecting ring by bolts.

[0012] Preferably, both ends of the locking ring are respectively provided with a snap-fitting slot and a snap-fitting block.

[0013] Preferably, an annular groove is provided on the outer surface of the conversion female head at one end of the accommodating cavity; and a protrusion that can be inserted into the annular groove is provided on the inner wall of the locking ring.

[0014] Preferably, an annular boss is provided at the airway opening of the female head in the accommodating cavity; the small end of the conversion male head is sleeved on the annular boss; and the sealing member is located between the annular boss and the small end of the conversion male head.

[0015] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0016] 1. The utility model can play a role of conversion and is compatible with American standard oxygen valves and national standard oxygen cylinders, so that the two can be assembled, reducing the operating costs and equipment replacement costs of medical institutions.

[0017] It also has the advantages of easy disassembly and assembly, good sealing, etc.

[0018] 2. The utility model can quickly disassemble and assemble the American standard oxygen valve and the national standard oxygen cylinder through the elastic quick-insert assembly, which simplifies the operation difficulty;

[0019] 3. The utility model is sealed and connected with both the American standard oxygen valve and the national standard oxygen joint, and a seal is also provided between the conversion male head and the conversion female head, so the sealing performance is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The technical solution of the utility model is further described below in conjunction with the accompanying drawings:

[0021] Attached Figure 1 It is a cross-sectional view of the medical oxygen valve conversion joint described in the utility model;

[0022] Attached Figure 2 It is a cross-sectional view of the conversion female head in the utility model;

[0023] Attached Figure 3 It is a cross-sectional view of the conversion male plug in the utility model;

[0024] Attached Figure 4This is a structural diagram of the conversion male head in the utility model;

[0025] Attached Figure 5 for Figure 1 A partial enlarged view of the middle part;

[0026] Attached Figure 6 It is an exploded view of the elastic quick-plug assembly in the utility model;

[0027] Attached Figure 7 It is a cross-sectional view of the Chinese standard oxygen connector of the utility model.

[0028] Among them: 1. conversion male head; 11. male head airway; 12. blind hole; 13. male head internal thread; 14. chamfer; 15. bevel; 16. oblique groove; 2. conversion female head; 21. accommodating cavity; 22. female head internal thread; 23. female head airway; 24. through hole; 25. annular groove; 26. annular boss; 3. elastic quick plug assembly; 31. locking ring; 32. spring; 33. clamping column; 34. groove; 35. positioning platform; 36. connecting ring; 37. bolt; 38. clamping groove; 39. clamping block; 4. American standard oxygen valve connector; 5. national standard oxygen connector; 51. external thread; 52. ring; 6. nut; 7. seal; 8. sealing gasket. DETAILED DESCRIPTION

[0029] The utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] Attached Figure 1-7 The medical oxygen valve conversion joint described in the utility model comprises a conversion male head 1, a conversion female head 2 and an elastic quick-insertion component 3;

[0031] One end of the conversion female connector 2 is provided with a receiving cavity 21, and the other end is provided with a female internal thread 22 which is sealed and connected with the external thread of the American standard oxygen valve connector 4, and a female airway 23 which connects the receiving cavity 21 and the female internal thread 22 is provided inside; a plurality of through holes 24 evenly distributed in the circumferential direction are provided on the side wall of the receiving cavity 21;

[0032] The conversion male plug 1 is coaxially arranged in the accommodating cavity 21, and a male plug airway 11 communicating with the female plug airway 23 is arranged inside; the axial cross section of the conversion male plug 1 is step-shaped, with the large end facing outward and the small end facing inward; the large end surface is provided with a plurality of blind holes 12 corresponding to the through holes 24, and the end face is provided with a male plug internal thread 13 sealed and connected with the external thread of the national standard oxygen connector 5; a sealing member 7 is arranged between the small end and the accommodating cavity 21;

[0033] The elastic quick-connect assembly 3 includes a lock ring 31 sleeved on the conversion female head 2 and a plurality of clamping columns 33 arranged in the lock ring 31 and capable of passing through the through hole 24 and extending into the blind hole 12 under the action of a spring 32 .

[0034] During installation: first, thread the male head internal thread 13 and the national standard oxygen connector 5 and seal them with an airtight thread sealant. At this time, the nut 6 is placed behind the ring 52 of the national standard oxygen connector 5; then, the sealing ring is put on the external thread of the American standard oxygen valve connector 4, and then the external thread of the American standard oxygen valve connector 4 is screwed into the female head internal thread 22. If you want better sealing, you can also place a sealing gasket 8 in the female head internal thread 22, so that the external thread end face of the American standard oxygen valve connector 4 presses the sealing gasket 8 for secondary sealing; then, install the elastic quick-insert component 3 on the conversion female head 2, so that multiple clamping columns 33 pass through the through hole 24 and extend into the accommodating chamber 21; finally, insert the conversion male head 1 into the accommodating chamber 21 until the clamping column 33 extends into the blind hole 12, and the conversion female head 2 and the conversion male head 1 are clamped.

[0035] Furthermore, the shoulder of the conversion male head 1 is provided with a chamfer 14; the minimum radius of the chamfer 14 is smaller than the distance from the end to the axis when the clamping column 33 extends into the extreme position in the accommodating cavity 21; when the conversion male head 1 is inserted into the accommodating cavity 21, the clamping column 33 can be lifted up by the chamfer 14, which is convenient for assembly; when the conversion male head 1 is installed in place, the clamping column 33 extends into the blind hole 12 under the action of the spring 32, and clamps the conversion female head 2 and the conversion male head 1.

[0036] Furthermore, the large end surface of the conversion male head 1 is provided with inclined surfaces 15 on both sides of the circumferential direction of the blind hole 12; the large end surface of the conversion male head 1 is provided with inclined grooves 16 extending to the shaft shoulder between adjacent blind holes 12; when disassembly is required, the lock ring 31 is rotated, and the clamping column 33 is lifted up and separated from the blind hole 12 under the action of the inclined surface 15; when the clamping column 33 is rotated to the position of the inclined groove 16, due to the inclination angle of the inclined groove 16 and the force of the clamping column 33 being pushed outward by the spring 32, the conversion female head 2 and the conversion male head 1 are easily separated.

[0037] Furthermore, a groove 34 is provided on the inner wall of the locking ring 31; a positioning platform 35 is provided at the bottom of the groove 34; the clamping column 33 is arranged in the groove 34, and a limiting portion larger than the aperture of the through hole 24 is provided at the tail; the spring 32 is sleeved on the positioning platform 35, and is used to drive the clamping column 33 to move outward; when the elastic quick-plug assembly 3 is installed on the conversion female head 2, the clamping column 33 will pass through the through hole 24 and extend into the accommodating cavity 21 under the action of the spring 32, but because the clamping column 33 is provided with a limiting portion larger than the aperture of the through hole 24 at the tail, it can be ensured that the clamping column 33 will not fall out of the groove 34.

[0038] Furthermore, the elastic quick-connect assembly 3 also includes a connecting ring 36 sleeved on the conversion female head 2; the locking ring 31 is composed of three pieces spliced ​​together and fixed to the connecting ring 36 by bolts 37; the utility model not only facilitates the installation of the clamping column 33 and the spring 32, but also facilitates the installation of the annular groove 25 and the protrusion by splicing the locking ring 31 from three pieces.

[0039] Furthermore, the two ends of the lock ring 31 are respectively provided with a snap-fitting slot 38 and a snap-fitting block 39; the utility model provides the snap-fitting slot 38 and the snap-fitting block 39, so that adjacent lock rings 31 can play a positioning role when spliced, ensuring that their end faces are located in the same plane.

[0040] Furthermore, an annular groove 25 is provided on the outer surface of the conversion female head 2 at one end of the accommodating cavity 21; a protrusion that can be inserted into the annular groove 25 is provided on the inner wall of the locking ring 31; the utility model plays an axial positioning role for the locking ring 31 through the cooperation between the annular groove 25 and the protrusion, ensuring that the clamping column 33 can be aligned with the through hole 24.

[0041] Furthermore, an annular boss 26 is provided at the airway opening of the conversion female connector 2 in the accommodating cavity 21; the small end of the conversion male connector 1 is sleeved on the annular boss 26; the sealing member 7 is located between the annular boss 26 and the small end of the conversion male connector 1 to play a sealing role.

[0042] Furthermore, the sealing member 7 is fixedly mounted on the annular boss 26 or in the small end of the conversion male connector 1, which is not only convenient for assembly but also difficult to be misplaced during installation.

[0043] The above are only specific application examples of the utility model, and do not constitute any limitation on the protection scope of the utility model. Any technical solution formed by equivalent transformation or equivalent replacement falls within the protection scope of the utility model.

Claims

1. A medical oxygen valve conversion joint, characterized in that: Contains conversion male head, conversion female head and elastic quick-plug assembly; One end of the conversion female connector is provided with a receiving cavity, and the other end is provided with a female connector internal thread that is sealed and connected to the external thread of the American standard oxygen valve connector, and a female connector airway that connects the receiving cavity and the female connector internal thread is provided inside; a plurality of through holes evenly distributed in the circumferential direction are provided on the side wall of the receiving cavity; The male conversion head is coaxially arranged in the accommodating cavity, and a male airway connected to the female airway is arranged inside; the axial cross section of the male conversion head is stepped, with the large end facing outward and the small end facing inward; the large end surface is provided with a plurality of blind holes corresponding to the through holes, and the end face is provided with a male internal thread sealed with the external thread of the national standard oxygen connector; a sealing member is arranged between the small end and the accommodating cavity; The elastic quick-insertion assembly comprises a lock ring sleeved on the conversion female head, and a plurality of clamping columns arranged in the lock ring and capable of passing through the through hole and extending into the blind hole under the action of a spring.

2. The medical oxygen valve conversion joint according to claim 1, characterized in that: The shaft shoulder of the conversion male head is provided with a chamfer; the minimum radius of the chamfer is smaller than the distance from the end to the axis when the clamping column extends into the limit position in the accommodating cavity.

3. The medical oxygen valve conversion joint according to claim 1, characterized in that: The large end surface of the conversion male head is provided with inclined surfaces on both sides of the blind hole in the circumferential direction; the large end surface of the conversion male head is provided with inclined grooves extending to the shaft shoulder between adjacent blind holes.

4. The medical oxygen valve conversion joint according to any one of claims 1 to 3, characterized in that: The inner wall of the lock ring is provided with a groove; a positioning platform is provided at the bottom of the groove; the clamping column is arranged in the groove, and a limiting portion larger than the aperture of the through hole is provided at the tail; the spring sleeve is arranged on the positioning platform to drive the clamping column to move outward.

5. The medical oxygen valve conversion joint according to claim 4, characterized in that: The elastic quick-connect assembly also includes a connecting ring sleeved on the conversion female head; the locking ring is formed by splicing at least two pieces and is fixed to the connecting ring by bolts.

6. The medical oxygen valve conversion joint according to claim 5, characterized in that: Both ends of the lock ring are respectively provided with a clamping groove and a clamping block that can be engaged.

7. The medical oxygen valve conversion joint according to claim 6, characterized in that: The outer surface of the conversion female head at one end of the accommodating cavity is provided with an annular groove; the inner wall of the lock ring is provided with a protrusion that can be inserted into the annular groove.

8. The medical oxygen valve conversion joint according to claim 1, characterized in that: An annular boss is arranged at the airway opening of the female head in the accommodating cavity; the small end of the conversion male head is sleeved on the annular boss; and the sealing member is located between the annular boss and the small end of the conversion male head.

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