Snap-on gas terminal

Abstract

The utility model discloses a snap-on gas terminal, including a valve seat and a valve body installed on the top of the valve seat, the valve seat is provided with two sets of guide grooves arranged opposite to each other, each guide groove is respectively provided with a set of buttons and a third spring; the top of the button is provided with a limit snap-on extending outward; the inner hole wall at the bottom of the valve body is provided with an annular locking groove, the limit snap-on is inserted into the locking groove under the push of the third spring; the top of the valve seat is also provided with a positioning pin, the upper end of the positioning pin is inserted into the positioning hole at the bottom of the valve body. The valve body and the valve seat of the utility model adopt a snap-on connection, no tools are required, and it is easy to disassemble and assemble, and it also has the advantages of easy operation and reliable connection.

Description

Technical Field

[0001] The utility model belongs to the field of medical equipment, and in particular relates to a gas terminal. Background Art

[0002] Hospital wards and operating rooms are equipped with equipment belts with gas terminals. Some gas pipeline alarm boxes are also equipped with gas terminals for checking gas. Users can get oxygen and other required gases by inserting the gas pipe into the gas terminal.

[0003] Traditional gas terminals are usually installed with screws. Although this method is stable and reliable, it has certain defects in actual use: the installation and removal of screws are cumbersome, require the use of corresponding tools, and take a long time, especially when replacing and maintaining. It is very inconvenient. Utility Model Content

[0004] The utility model provides a snap-on gas terminal, the purpose of which is to solve the problem of inconvenient installation and disassembly caused by screw connection.

[0005] The technical solution of this utility model is as follows:

[0006] A snap-on gas terminal comprises a valve seat and a valve body mounted on the top of the valve seat, wherein the valve seat is provided with two sets of guide grooves arranged opposite to each other, and each guide groove is respectively provided with a set of buttons and a third spring;

[0007] A limit buckle extending outward is provided on the top of the button;

[0008] An annular locking groove is provided on the inner hole wall of the bottom of the valve body, and the limit buckle is inserted into the locking groove under the push of the third spring;

[0009] A positioning pin is also installed on the top of the valve seat, and the upper end of the positioning pin is inserted into the positioning hole at the bottom of the valve body.

[0010] As a further improvement of the snap-on gas terminal: the button includes a body and two groups of vertical rods, the lower ends of the two groups of vertical rods are respectively connected to the body, the upper ends of the vertical rods are respectively provided with the limit buckles, and the tops of the limit buckles are provided with inclined surfaces.

[0011] As a further improvement of the snap-on gas terminal: a vertical groove matching with the vertical rod is provided on the valve seat, and the lower end of the vertical groove is connected with the guide groove.

[0012] As a further improvement of the snap-on gas terminal: a chamfer is provided at the inner hole opening at the bottom of the valve body.

[0013] As a further improvement of the snap-on gas terminal: a fourth sealing ring is further sleeved on the outer side of the valve seat, and the vertical rod is located on the inner side of the fourth sealing ring.

[0014] As a further improvement of the snap-on gas terminal: a valve port is installed at the upper end of the valve body, and a valve cover is installed on the outer side of the valve port.

[0015] As a further improvement of the snap-on gas terminal: a positioning sleeve that can slide up and down is installed in the valve body, and the positioning sleeve is located below the valve port;

[0016] A guide pin is installed on the outer wall of the positioning sleeve, and the guide pin passes through a vertical slide groove provided on the valve body, and the outer end of the guide pin is located in the hole wall of the inner hole of the valve cover; the valve cover and the valve body are slidably matched, and the upper end of the valve port is provided with a flange for preventing the valve cover from moving upward;

[0017] A first spring is also installed inside the valve body, and the first spring is used to push the positioning sleeve upward;

[0018] The positioning sleeve is provided with a positioning mechanism for fixing the insertion tube inserted into the valve port.

[0019] As a further improvement of the snap-on gas terminal: the positioning mechanism is a steel ball installed in the ball hole on the positioning sleeve; an annular groove is provided on the inner wall of the valve body, and when the first spring pushes the positioning sleeve upward, the steel ball moves inward under the action of the conical surface of the annular groove and clamps the insert tube.

[0020] As a further improvement of the snap-on gas terminal: an air inlet hole is provided at the bottom of the valve seat, a mounting hole connected to the air inlet hole is provided at the top of the valve seat, an upper valve core is installed at the upper end of the mounting hole, a lower valve core is installed in the upper valve core, and the lower end of the lower valve core is used to block the air inlet hole;

[0021] A second spring for pushing the lower valve core upward is also installed in the valve seat; a third sealing ring is also mounted on the lower valve core. When the lower valve core is pushed upward by the second spring, the lower valve core and the upper valve core squeeze the third sealing ring to prevent the gas in the air inlet hole from entering the valve body.

[0022] As a further improvement of the snap-on gas terminal: a first sealing ring is installed at the upper end of the upper valve core, and the first sealing ring is used to achieve sealing between the central hole of the upper valve core and the cannula inserted into the valve body;

[0023] A second sealing ring is also installed between the upper valve core and the valve seat.

[0024] Compared with the prior art, the utility model has the following beneficial effects:

[0025] 1. The valve body and valve seat are connected by snap-on connection, which does not require tools and is easy to disassemble and assemble.

[0026] 2. The inclined surface on the top of the limit buckle can reduce the resistance when pushing the limit buckle during installation and reduce the wear of the button.

[0027] 3. The fourth sealing ring on the outside of the valve seat can constrain the extreme position of the button to prevent the button from falling off after the valve body is removed.

[0028] 4. A steel ball is used to fix the insert in the valve body. After pressing the valve cover, the steel ball automatically changes to an unlocked state and can be inserted and removed at will. After loosening the valve cover, the steel ball clamps the insert under the push of the annular groove to achieve automatic fixation, which is easy to operate and reliable in connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is one of the three-dimensional diagrams of the utility model;

[0030] Figure 2 It is one of the cross-sectional views of the utility model;

[0031] Figure 3 This is the second cross-sectional view of the utility model, in which the valve body and the upper valve core are hidden;

[0032] Figure 4 This is the second stereoscopic diagram of the utility model, in which the valve seat, the upper valve core, the lower valve core and other parts are hidden.

[0033] Parts names in the picture:

[0034] 1. Valve port; 2. Valve cover; 3. Valve body; 4. Valve seat; 5. Button; 6. Positioning sleeve; 7. First spring; 8. First sealing ring; 9. Upper valve core; 10. Second sealing ring; 11. Positioning pin; 12. Third sealing ring; 13. Second spring; 14. Lower valve core; 15. Set screw; 16. Guide pin; 17. Fourth sealing ring; 18. Third spring; 3-1. Annular groove; 3-2. Locking groove; 3-3. Chamfer; 5-1. Limit buckle; 6-1. Bead hole. DETAILED DESCRIPTION

[0035] The technical solution of the utility model is described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments.

[0036] like Figure 1 , a snap-on gas terminal comprises a valve seat 4 and a valve body 3 installed on the top of the valve seat 4.

[0037] like Figure 2 and 3, a valve port 1 is installed at the upper end of the valve body 3 through a set screw 15, and a valve cover 2 that can move up and down is installed on the outer side of the valve port 1. A positioning sleeve 6 that can slide up and down is installed in the valve body 3, and the positioning sleeve 6 is located below the valve port 1. A guide pin 16 is installed on the outer wall of the positioning sleeve 6, and the guide pin 16 passes through the vertical slide groove opened on the valve body 3, and the outer end of the guide pin 16 is located in the hole wall of the inner hole of the valve cover 2. A flange for blocking the valve cover 2 from moving upward is provided at the upper end of the valve port 1. A first spring 7 is also installed inside the valve body 3, and the first spring 7 is used to push the positioning sleeve 6 upward, and at the same time, the positioning sleeve 6 pushes the valve cover 2 to move upward through the guide pin 16 until the valve cover 2 contacts the flange.

[0038] The positioning sleeve 6 is provided with a positioning mechanism for fixing the insert tube inserted into the valve port 1. Specifically, the positioning mechanism is a steel ball installed in the bead hole 6-1 on the positioning sleeve 6. In this embodiment, the bead hole 6-1 has two layers, 3-4 beads in each layer, and the layers are staggered. An annular groove 3-1 is provided on the inner wall of the valve body 3. When the first spring 7 pushes the positioning sleeve 6 upward, the steel ball moves inward and clamps the inserted insert tube under the action of the conical surface of the annular groove 3-1. When the valve cover 2 is pressed, the valve cover 2 drives the positioning sleeve 6 to move downward through the guide pin 16. At this time, the steel ball moves to the middle position of the annular groove 3-1 and is in an unlocked state, which can be freely plugged in and out.

[0039] The bottom of the valve seat 4 is provided with an air inlet hole, the top of the valve seat 4 is provided with a mounting hole connected to the air inlet hole, an upper valve core 9 is mounted on the upper end of the mounting hole by threaded matching, and a second sealing ring 10 is also installed between the upper valve core 9 and the valve seat 4. A first sealing ring 8 is installed on the upper end of the upper valve core 9, and the first sealing ring 8 is used to achieve sealing between the center hole of the upper valve core 9 and the cannula inserted into the valve body 3.

[0040] A lower valve core 14 is installed at the lower part of the upper valve core 9. The lower end of the lower valve core 14 is provided with an external thread, which cooperates with the internal thread at the end of the air inlet hole to block the air inlet hole. A second spring 13 for pushing the lower valve core 14 upward is also installed in the valve seat 4. A third sealing ring 12 is also mounted on the lower valve core 14. When the lower valve core 14 is pushed upward by the second spring 13, the lower valve core 14 and the upper valve core 9 squeeze the third sealing ring 12 to prevent the gas in the air inlet hole from entering the valve body 3. When the inserted cannula pushes the lower valve core 14 downward (but the bottom does not block the air inlet hole), the upper valve core 9 is separated from the lower valve core 14, and the gas can pass normally. Furthermore, during maintenance, the lower valve core 14 can be manually pushed to the bottom, and the lower valve core 14 can be rotated so that the external thread at its lower end cooperates with the internal thread at the air inlet hole to block the air inlet hole and disconnect the gas supply.

[0041] Further, such as Figure 1 and4 The valve seat 4 is provided with two sets of guide grooves arranged opposite to each other, and a set of buttons 5 and a third spring 18 are respectively installed in each of the guide grooves.

[0042] The top of the button 5 is provided with a limit buckle 5-1 extending outward. In this embodiment, the button 5 includes a body and two sets of vertical rods, the lower ends of the two sets of vertical rods are respectively connected to the body, and the upper ends of the vertical rods are respectively provided with the limit buckle 5-1, and the top of the limit buckle 5-1 is provided with an inclined surface.

[0043] Furthermore, a vertical groove matched with the vertical rod is formed on the valve seat 4, and the lower end of the vertical groove is connected with the guide groove.

[0044] Furthermore, a fourth sealing ring 17 is mounted on the outer side of the valve seat 4 , and the vertical rod is located on the inner side of the fourth sealing ring 17 to prevent the button 5 from falling off after the valve body 3 is removed.

[0045] An annular locking groove 3-2 is provided on the inner hole wall at the bottom of the valve body 3, and the limit buckle 5-1 is inserted into the locking groove 3-2 under the push of the third spring 18. A chamfer 3-3 is also provided at the inner hole opening at the bottom of the valve body 3 to further reduce the friction when the valve body 3 contacts the inclined surface.

[0046] A positioning pin 11 is also installed on the top of the valve seat 4 , and the upper end of the positioning pin 11 is inserted into the positioning hole at the bottom of the valve body 3 .

[0047] Before installation, first install the valve seat 4 (including the upper valve core 9 and the lower valve core 14) on the equipment belt. At this time, the lower end of the lower valve core 14 is screwed into the internal thread of the air inlet to block the air inlet. Then install the positioning pin 11, and then buckle the valve body 3 and the positioning sleeve 6, the valve port 1, and the valve cover 2 on the valve seat 4. When buckling, make sure that the positioning hole at the bottom of the valve body 3 is aligned with the positioning pin 11. When buckling, the valve body 3 contacts the inclined surface on the button 5, pushes the button 5 inward, and then the button 5 is inserted into the locking groove 3-2 under the push of the third spring 18 to achieve installation connection. When disassembling, press the button 5 and directly remove the valve body 3 and related components.

[0048] Before use, first unscrew the lower valve core 14. At this time, the lower valve core 14 moves upward under the action of the second spring 13 and squeezes the third sealing ring 12 together with the upper valve core 9 to prevent the gas in the air inlet from entering the valve body 3. When gas is needed, first press the valve cover 2, then the steel ball is unlocked, and then the cannula is inserted. The cannula pushes the lower valve core 14 downward, the gas path is connected, and then the valve cover 2 is loosened, the positioning sleeve 6 moves up, and the steel ball clamps the cannula. After use, press the valve cover 2 and pull out the cannula. At this time, the lower valve core 14 returns to its position and the gas path is disconnected.

[0049] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. The scope of the present invention is defined by the claims rather than the above description.

Claims

1. A snap-on gas terminal, comprising a valve seat (4) and a valve body (3) mounted on the top of the valve seat (4), characterized in that: The valve seat (4) is provided with two sets of guide grooves arranged opposite to each other, and each guide groove is respectively installed with a set of buttons (5) and a third spring (18); The top of the button (5) is provided with a limit buckle (5-1) extending outward; An annular locking groove (3-2) is provided on the inner hole wall at the bottom of the valve body (3), and the limit buckle (5-1) is inserted into the locking groove (3-2) under the push of the third spring (18); A positioning pin (11) is also installed on the top of the valve seat (4), and the upper end of the positioning pin (11) is inserted into the positioning hole at the bottom of the valve body (3).

2. The snap-on gas terminal according to claim 1, characterized in that: The button (5) comprises a body and two groups of vertical rods, the lower ends of the two groups of vertical rods are respectively connected to the body, the upper ends of the vertical rods are respectively provided with the limiting buckles (5-1), and the tops of the limiting buckles (5-1) are provided with inclined surfaces.

3. The snap-on gas terminal according to claim 2, characterized in that: The valve seat (4) is provided with a vertical groove matched with the vertical rod, and the lower end of the vertical groove is connected to the guide groove.

4. The snap-on gas terminal according to claim 3, characterized in that: A chamfer (3-3) is provided at the inner hole opening at the bottom of the valve body (3).

5. The snap-on gas terminal according to claim 3, characterized in that: A fourth sealing ring (17) is also sleeved on the outer side of the valve seat (4), and the vertical rod is located on the inner side of the fourth sealing ring (17).

6. The snap-on gas terminal according to any one of claims 1 to 5, characterized in that: A valve port (1) is mounted on the upper end of the valve body (3), and a valve cover (2) is mounted on the outer side of the valve port (1).

7. The snap-on gas terminal according to claim 6, characterized in that: A positioning sleeve (6) which can slide up and down is installed in the valve body (3), and the positioning sleeve (6) is located below the valve port (1); A guide pin (16) is mounted on the outer wall of the positioning sleeve (6), the guide pin (16) passes through a vertical slide groove provided on the valve body (3), and the outer end of the guide pin (16) is located in the hole wall of the inner hole of the valve cover (2); the valve cover (2) and the valve body (3) are slidably matched, and the upper end of the valve port (1) is provided with a flange for preventing the valve cover (2) from moving upward; A first spring (7) is also installed inside the valve body (3), and the first spring (7) is used to push the positioning sleeve (6) upwards; The positioning sleeve (6) is provided with a positioning mechanism for fixing the insertion tube inserted into the valve port (1).

8. The snap-on gas terminal according to claim 7, characterized in that: The positioning mechanism is a steel ball installed in a ball hole (6-1) on the positioning sleeve (6); an annular groove (3-1) is provided on the inner wall of the valve body (3); when the first spring (7) pushes the positioning sleeve (6) upward, the steel ball moves inward under the action of the conical surface of the annular groove (3-1) to clamp the insertion tube.

9. The snap-on gas terminal according to claim 6, characterized in that: An air inlet hole is provided at the bottom of the valve seat (4), a mounting hole communicating with the air inlet hole is provided at the top of the valve seat (4), an upper valve core (9) is mounted at the upper end of the mounting hole, a lower valve core (14) is mounted in the upper valve core (9), and the lower end of the lower valve core (14) is used to block the air inlet hole; A second spring (13) for pushing the lower valve core (14) upward is also installed in the valve seat (4); a third sealing ring (12) is also sleeved on the lower valve core (14); when the lower valve core (14) is pushed upward by the second spring (13), the lower valve core (14) and the upper valve core (9) squeeze the third sealing ring (12) to prevent the gas in the air inlet from entering the valve body (3).

10. The snap-on gas terminal according to claim 9, characterized in that: A first sealing ring (8) is installed at the upper end of the upper valve core (9), and the first sealing ring (8) is used to achieve sealing between the central hole of the upper valve core (9) and the insertion tube inserted into the valve body (3); A second sealing ring (10) is also installed between the upper valve core (9) and the valve seat (4).

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