A gas-tight joint for a ventilator pipeline

Abstract

The utility model discloses an airtight joint for a ventilator pipeline, belonging to the technical field of pipeline joints, including a first joint and a second joint, the first joint being threadedly connected to the second joint, the first joint and the second joint being respectively provided with a first sealing ring and a second sealing ring at one end, the first joint and the second joint being respectively sleeved with a first helical gear ring and a second helical gear ring, the second helical gear ring being meshed and connected with the first helical gear ring, and a limiting mechanism being provided on the second joint. The utility model can ensure the sealing of the connection between the first joint and the second joint to avoid air leakage by providing the first sealing ring and the second sealing ring at the two connecting ends, and by providing the second helical gear ring being meshed and connected with the first helical gear ring, the second helical gear ring is meshed and pressed against the first helical gear ring by a spring, thereby avoiding the first joint and the second joint from being loosened due to reversal, and improving the reliability of the ventilator pipeline connection.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline joints, and in particular relates to an airtight joint for a breathing machine pipeline. Background Art

[0002] The ventilator pipe connector is a component used to connect the ventilator to the breathing circuit. The Chinese patent publication number CN214912265U discloses a ventilator connector device, including a connecting pipe, a threaded ring is provided at one end of the connecting pipe, an oxygen connecting pipe is installed at the other end of the connecting pipe, a pressing ring is installed at the end of the oxygen connecting pipe close to the connecting pipe, an external thread is provided on the outer wall of the connecting pipe, a threaded ring is provided at the end of the connecting pipe away from the pressing ring, the threaded ring is threadedly connected to the external thread, and a fixed pipe is provided on the outer side of one end of the connecting pipe. The connecting pipe of the ventilator connector device can be connected to the oxygen connecting pipe on the ventilator, and the other end is connected to the fixed pipe, one end of the fixed pipe is installed on the oxygen cylinder, and the fixed pipe and the connecting pipe are detachably connected, so as to facilitate the quick connection and disassembly of one end of the oxygen connecting pipe on the patient between the oxygen cylinder and the ventilator, thereby facilitating the transportation of the patient and saving transportation time. After installation, it can be connected and tightened, which is convenient for oxygen delivery and will not fall off.

[0003] The problem with the prior art is that the above-mentioned ventilator connector pushes the locking ball to the inside of the locking hole through the threaded connection between the threaded ring and the external thread to lock the connector, but the threaded connection is prone to loosening, which not only causes air leakage at the connector, but also affects the stability of the connection between the connector and the pipeline, and needs further improvement. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model provides an airtight joint for a ventilator pipeline, which has the advantages of good sealing and high reliability, and solves the problem that the existing ventilator joints are easily loosened through threaded connections, causing air leakage at the joints and affecting the connection stability between the joints and the pipeline.

[0005] The utility model is implemented as follows: an airtight joint for a ventilator pipeline comprises a first joint and a second joint, wherein the first joint and the second joint are fixedly mounted on the ventilator and one end of the pipeline respectively, the first joint is threadedly connected to the second joint, a first sealing ring and a second sealing ring are respectively arranged at one end of the first joint and the second joint, the first sealing ring and the second sealing ring are respectively abutted against a fourth connecting portion and an end of the first joint, a first bevel gear ring and a second bevel gear ring are respectively sleeved on the first joint and the second joint, the second bevel gear ring is meshingly connected with the first bevel gear ring, and a limiting mechanism is arranged on the second joint.

[0006] As a preferred embodiment of the utility model, a first connection part and a second connection part are arranged on the inner side of one end of the first joint, and an extension part is arranged on the outer side, a third connection part and a fourth connection part are arranged on one end of the second joint, and the first connection part and the second connection part are threadedly connected to the third connection part and the fourth connection part respectively.

[0007] As a preferred embodiment of the present invention, a mounting ring is fixedly connected to the inner wall of the first helical gear ring, the mounting plate is fixedly sleeved on the extension portion, and a plurality of reinforcing ribs are provided on one side of the mounting ring.

[0008] As a preferred embodiment of the utility model, a mounting seat is fixedly connected to one side of the second helical gear ring, a spring is fixedly installed in the mounting seat, and the spring is sleeved on one end of the second joint.

[0009] As a preferred embodiment of the utility model, the limiting mechanism includes a fixing ring and a guide plate, the fixing ring is fixedly sleeved on one end of the second joint and fixedly connected to one end of the spring, the guide plate is fixedly connected to one side of the mounting seat, the end of the guide plate away from the mounting seat slides through the fixing ring and the end is fixedly connected with a retaining ring.

[0010] As a preferred embodiment of the utility model, the outer circumferential surfaces of the fixing ring and the upper and lower ends of the mounting seat are respectively fixedly connected with a first fixing plate and a second fixing plate, and a pull rod is rotatably connected to one side of the second fixing plate. A limiting block is fixedly installed on the rod body of the pull rod away from the second fixing plate, and a pull ring is fixedly connected to the end.

[0011] As a preferred embodiment of the utility model, the limit block slides through the first fixed plate, and a plurality of anti-slip strips are provided on one side of the limit plate.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The utility model can improve the stability of the connection by providing a stepped matching structure, and can ensure the sealing of the connection between the first joint and the second joint to avoid air leakage by providing a first sealing ring and a second sealing ring at the two connection ends.

[0014] 2. The utility model provides a second helical gear ring that is meshed and connected with the first helical gear ring, and the second helical gear ring is meshed and pressed against the first helical gear ring by a spring. The second helical gear ring is fixed to the first helical gear ring by the limiting cooperation between the guide plate and the fixing ring, thereby preventing the first joint and the second joint from being reversed and loosened, and improving the reliability of the ventilator pipeline connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0016] Figure 2It is a partial cross-sectional three-dimensional structural schematic diagram of the utility model;

[0017] Figure 3 For the utility model Figure 1 A magnified view of the structure at center;

[0018] Figure 4 For the utility model Figure 2 A magnified view of the structure at B in the middle;

[0019] Figure 5 This is an exploded view of the first partial structure of the utility model;

[0020] Figure 6 This is an exploded view of the second local structure of the utility model.

[0021] In the figure: 1. first joint; 11. first connecting part; 12. second connecting part; 13. first sealing ring; 14. extension part; 101. second joint; 1011. third connecting part; 1012. fourth connecting part; 1013. second sealing ring; 2. limiting mechanism; 201. fixing ring; 202. guide plate; 203. retaining ring; 204. first fixing plate; 205. second fixing plate; 206. pull rod; 207. pull ring; 208. limiting block; 209. anti-slip strip; 3. first bevel gear ring; 301. mounting ring; 302. reinforcing rib; 4. second bevel gear ring; 5. spring; 501. mounting seat. DETAILED DESCRIPTION

[0022] In order to further understand the content, features and effects of the utility model, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0023] The structure of the utility model is described in detail below in conjunction with the accompanying drawings.

[0024] like Figures 1 to 6 As shown, an embodiment of the utility model provides an airtight joint for a ventilator pipeline, comprising a first joint 1 and a second joint 101, the first joint 1 and the second joint 101 are respectively fixedly installed on the ventilator and one end of the pipeline, the first joint 1 is threadedly connected to the second joint 101, and one end of the first joint 1 and the second joint 101 are respectively provided with a first sealing ring 13 and a second sealing ring 1013, the first sealing ring 13 and the second sealing ring 1013 are respectively abutted against the fourth connecting portion 1012 and the end of the first joint 1, the first joint 1 and the second joint 101 are respectively sleeved with a first helical gear ring 3 and a second helical gear ring 4, the second helical gear ring 4 is meshedly connected with the first helical gear ring 3, and a limiting mechanism 2 is provided on the second joint 101.

[0025] Furthermore, a first connection part 11 and a second connection part 12 are provided on the inner side of one end of the first joint 1, and an extension part 14 is provided on the outer side, and a third connection part 1011 and a fourth connection part 1012 are provided on one end of the second joint 101, and the first connection part 11 and the second connection part 12 are threadedly connected to the third connection part 1011 and the fourth connection part 1012 respectively.

[0026] In the present application, the cross-sections of the first connection part 11 and the second connection part 12 of the first joint 1 are stepped, and the third connection part 1011 and the fourth connection part 1012 of the second joint 101 are adapted to the first connection part 11 and the second connection part 12. During the threaded connection of the first joint 1 and the second joint 101, the outer wall of the third connection part 1011 slides with the extension part 14 until the first sealing ring 13 and the second sealing ring 1013 are tightly pressed. By setting a stepped matching structure, the stability of the connection can be improved. By setting the first sealing ring 13 and the second sealing ring 1013 at the two connecting ends, the sealing of the connecting part between the first joint 1 and the second joint 101 can be guaranteed to avoid air leakage.

[0027] Furthermore, a mounting ring 301 is fixedly connected to the inner wall of the first helical gear ring 3, a mounting plate is fixedly sleeved on the extension portion 14, a plurality of reinforcing ribs 302 are provided on one side of the mounting ring 301, a mounting seat 501 is fixedly connected to one side of the second helical gear ring 4, a spring 5 is fixedly installed in the mounting seat 501, and the spring 5 is sleeved on one end of the second joint 101.

[0028] In the present application, the first bevel gear ring 3 is fixed to the first joint 1 by a mounting ring 301, and the second bevel gear ring 4 is movably arranged on the second joint 101 by a spring 5 and fixed by a limiting mechanism 2. By meshing the second bevel gear ring 4 with the first bevel gear ring 3, it is possible to avoid reversal of the first joint 1 and the second joint 101 during use to cause air leakage, thereby improving the stability of the connection between the first joint 1 and the second joint 101 and improving the reliability of the ventilator pipeline connection.

[0029] Furthermore, the limiting mechanism 2 includes a fixing ring 201 and a guide plate 202. The fixing ring 201 is fixedly sleeved on one end of the second joint 101 and is fixedly connected to one end of the spring 5. The guide plate 202 is fixedly connected to one side of the mounting seat 501. The end of the guide plate 202 away from the mounting seat 501 slides through the fixing ring 201 and a retaining ring 203 is fixedly connected to the end. The outer circumferential surfaces of the fixing ring 201 and the upper and lower ends of the mounting seat 501 are respectively fixedly connected with a first fixing plate 204 and a second fixing plate 205. A pull rod 206 is rotatably connected to one side of the second fixing plate 205. A limiting block 208 is fixedly installed on the rod body of the pull rod 206 away from the second fixing plate 205, and a pull ring 207 is fixedly connected to the end. The limiting block 208 slides through the first fixing plate 204, and a plurality of anti-slip strips 209 are arranged on one side of the limiting plate.

[0030] In the specific settings, Figure 4 Before connecting the first joint 1 and the second joint 101, pull the pull ring 207 outward, the pull ring 207 drives the pull rod 206 and the limit block 208 to move outward until the limit block 208 moves to the right side of the first fixed plate 204, then rotate the pull ring 207 to make the limit block 208 vertical, so that the limit block 208 blocks the right side of the first fixed plate 204, the pull rod 206 drives the second fixed plate 205, the mounting seat 501 and the second helical gear ring 4 to move synchronously, so that the spring 5 contracts, and the second helical gear ring 4 moves away from the first helical gear ring 3. After the first joint 1 and the second joint 101 are connected, the pull ring 207 and the limit block 208 are rotated in the opposite direction, and the second bevel gear ring 4 is driven to move in the opposite direction by the spring 5. The teeth of the second bevel gear ring 4 and the teeth of the first bevel gear ring 3 slide slightly and then mesh, so as to limit the first bevel gear ring 3, so as to fix the first joint 1 and the second joint 101 and avoid loose connection. During the movement of the second fixed plate 205, the guide plate 202 slides accordingly on the fixed ring 201, so as to guide the second fixed plate 205.

[0031] The working principle of this utility model:

[0032] When in use, the pull ring 207 is pulled outward, and the pull ring 207 drives the pull rod 206 and the limit block 208 to move outward until the limit block 208 moves to the right side of the first fixed plate 204, and then the pull ring 207 is rotated to make the limit block 208 vertical, so that the limit block 208 blocks the right side of the first fixed plate 204, and the pull rod 206 drives the second fixed plate 205, the mounting seat 501 and the second bevel gear ring 4 to move synchronously, so that the spring 5 contracts, and the second bevel gear ring 4 moves away from the first bevel gear ring 3, and then the first connecting part 11 and the second connecting part are connected. 12 is threadedly connected with the third connection part 1011 and the fourth connection part 1012 respectively, so that the first sealing ring 13 and the second sealing ring 1013 are pressed tightly to realize the sealed connection between the first joint 1 and the second joint 101, and then the pull ring 207 and the limit block 208 are rotated in the opposite direction, and the second bevel gear ring 4 is driven to move in the opposite direction by the spring 5. The teeth of the second bevel gear ring 4 and the teeth of the first bevel gear ring 3 are slightly slid and then meshed, so as to realize the limitation of the first bevel gear ring 3, so that the first joint 1 and the second joint 101 are fixed to prevent the connection from being loose.

[0033] To sum up: this kind of airtight joint for ventilator pipeline can improve the stability of connection by setting a stepped matching structure, and can ensure the sealing of the connection between the first joint 1 and the second joint 101 by setting the first sealing ring 13 and the second sealing ring 1013 at the two connecting ends to avoid air leakage, and can mesh with the first bevel gear ring 3 by setting the second bevel gear ring 4 and meshing and pressing the second bevel gear ring 4 with the first bevel gear ring 3 by the spring 5, and can fix the second bevel gear ring 4 with the first bevel gear ring 3 by the limiting cooperation between the guide plate 202 and the fixing ring 201, thereby avoiding the first joint 1 and the second joint 101 from loosening due to reversal, thereby improving the reliability of the ventilator pipeline connection.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An airtight connector for a ventilator pipeline, comprising a first connector (1) and a second connector (101), characterized in that: The first joint (1) and the second joint (101) are respectively fixedly mounted on the ventilator and one end of the pipeline; the first joint (1) is threadedly connected to the second joint (101); one end of the first joint (1) and the second joint (101) are respectively provided with a first sealing ring (13) and a second sealing ring (1013); the first sealing ring (13) and the second sealing ring (1013) are respectively abutted against the fourth connecting portion (1012) and the end of the first joint (1); the first joint (1) and the second joint (101) are respectively sleeved with a first helical gear ring (3) and a second helical gear ring (4); the second helical gear ring (4) is meshedly connected to the first helical gear ring (3); and a limiting mechanism (2) is provided on the second joint (101).

2. The airtight joint for a ventilator pipeline according to claim 1, characterized in that: A first connection portion (11) and a second connection portion (12) are provided on the inner side of one end of the first joint (1), and an extension portion (14) is provided on the outer side; a third connection portion (1011) and a fourth connection portion (1012) are provided on one end of the second joint (101); the first connection portion (11) and the second connection portion (12) are respectively threadedly connected to the third connection portion (1011) and the fourth connection portion (1012).

3. The airtight joint for a ventilator pipeline according to claim 1, characterized in that: A mounting ring (301) is fixedly connected to the inner wall of the first helical gear ring (3); the mounting ring (301) is fixedly sleeved on the extension portion (14); and a plurality of reinforcing ribs (302) are provided on one side of the mounting ring (301).

4. The airtight joint for a ventilator pipeline according to claim 1, characterized in that: One side of the second helical gear ring (4) is fixedly connected to a mounting seat (501), a spring (5) is fixedly mounted inside the mounting seat (501), and the spring (5) is sleeved on one end of the second joint (101).

5. The airtight joint for a breathing machine pipeline according to claim 4, characterized in that: The limiting mechanism (2) comprises a fixing ring (201) and a guide plate (202); the fixing ring (201) is fixedly sleeved on one end of the second joint (101) and fixedly connected to one end of the spring (5); the guide plate (202) is fixedly connected to one side of the mounting seat (501); and the guide plate (202) is located away from one end of the mounting seat (501).

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