CN203477714U - Air-tight joint - Google Patents
Air-tight joint Download PDFInfo
- Publication number
- CN203477714U CN203477714U CN201320460172.8U CN201320460172U CN203477714U CN 203477714 U CN203477714 U CN 203477714U CN 201320460172 U CN201320460172 U CN 201320460172U CN 203477714 U CN203477714 U CN 203477714U
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- China
- Prior art keywords
- pipe fitting
- room
- inner tube
- pipe
- joint
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Abstract
The utility model provides an air-tight joint which comprises a male joint component and a female joint component, wherein the male joint component is in threaded joint with the female joint component; when the male joint component is in threaded joint with and relatively close to the female joint component, a first gasket accommodated between the male joint component and the female joint component is compressed to realize the air-tight effect; the male joint component and the female joint component which are used for a long time can be prevented from being separated due to the threaded joint manner, so that the steady combination and the effects of safety and reliability are realized.
Description
[technical field]
The utility model relates to a kind of air tight joint, and it has tool joint pin assembly and female joint assembly, for connecting the pipeline terminal of pressurized gas equipment, with by conjunction with or dismounting tool joint pin assembly and female joint assembly realize opening or closing of pipeline.
[background technique]
In prior art, the joint that is connected in pressurized gas pipeline is all mainly to utilize the structure of outer sleeve, spring and steel ball to realize the combination between tool joint pin and female joint, when connecting tool joint pin and female joint, user must first pull back female joint outer sleeve, backing out original position location can insert the interface of tool joint pin, after inserting, the interface of tool joint pin is fixed in the engaging of the steel ball of female joint inside, and then relieving outer sleeve, allow outer sleeve because the elastic force of spring resets, use in conjunction with this tool joint pin and female joint.
Yet, the be fixed mode of tool joint pin of steel ball by female joint, cannot seal between steel ball and female joint, the gap between steel ball and tool joint pin, and cannot fully realize airtightly, make the gas that passes through reveal loss by the gap between steel ball and female joint, between steel ball and tool joint pin; And under using for a long time, the position that is easily contacted with female joint and tool joint pin because of steel ball produces wearing and tearing, and may cause location not precisely or get loose, cause between tool joint pin and female joint realizing good tightness, cause the problem of air leakage.
[summary of the invention]
For solving the shortcoming of above-mentioned prior art, the utility model provides a kind of air tight joint, and it can be realized airtight and prevent Leakage Gas, and can make tool joint pin assembly with between female joint group between be firmly combined, to improve Security and the reliability of use.
For achieving the above object and other object, the utility model provides a kind of air tight joint, and it comprises tool joint pin assembly and female joint assembly.This tool joint pin assembly comprises the first pipe fitting, has compressed part and pushing and pressing part on its one end, and the outer surface of this first pipe fitting has the first outside thread, contiguous this compressed part of this first outside thread.This female joint assembly, for being combined with this tool joint pin assembly, comprising and connects outer tube, connects inner tube, the first packing ring, the second pipe fitting, piston, the second packing ring and spring; The internal surface of this connection outer tube has the first internal thread and limited part, and this first internal thread is extended internally for engaging with the first outside thread of this first pipe fitting by one end of this connection outer tube; This connection inner tube is assembled in this connection outer tube, one end of this connection inner tube is formed with cutting graftage part and barricade, and the other end of this connection inner tube has the second outside thread, this cutting graftage part is to pushing and pressing part that should the first pipe fitting, this barricade is close to this cutting graftage part, and this connection inner tube runs through and is formed with the first room and second room of connection, and the cross section of this first room is less than the second room; This first packing ring is arranged on the cutting graftage part that connects inner tube and against this barricade; The second outside thread that the internal surface of this its one end of the second pipe fitting has the second internal thread and is connected inner tube with this engages, and this second pipe fitting has the 3rd room, and the 3rd room is communicated with the second room of this connection inner tube; This piston has flow path portion, block wall and connecting part, and this flow path portion and this connecting part are positioned at respectively the both sides of this block wall, and this flow path portion is arranged in the first room of this connection inner tube and this flow path portion front end has the wall of supporting; This second gasket rings winding is placed in the flow path portion of this piston, when the block wall of this piston pushes this second packing ring, between this first room and this second room, is closed; This spring one end is arranged on the connecting part of this piston, and the other end is arranged in this second pipe fitting, so that this piston reciprocating is in this first room, this second room and the 3rd room; Wherein, when the first pipe fitting spiral of this tool joint pin assembly is engaged in the connection outer tube of this female joint assembly, what the pushing and pressing part of this first pipe fitting pushed against this piston supports wall until contact the cutting graftage part of this connection inner tube, and the barricade of the compressed part of this first pipe fitting and this connection inner tube is relative approaches and push this first packing ring of packing.
In above-mentioned air tight joint, this flow path portion has the plurality of grooves runner being extended vertically by this block wall.
In above-mentioned air tight joint, this tool joint pin assembly further comprises the first outer sleeve, this first outer sleeve has the 3rd internal thread, and on the other end of relative this compressed part of this first pipe fitting, there is the first pipe and meet portion, and the outer surface that contiguous this first pipe of this first pipe fitting meets portion has the 3rd outside thread, this first outer sleeve connects in portion and by the 3rd internal thread and engages with the 3rd outside thread of this first pipe fitting for being sheathed on this first pipe.
In above-mentioned air tight joint, this female joint assembly further comprises the second outer sleeve, this second outer sleeve has the 4th internal thread, and the other end of relative this second internal thread of this second pipe fitting has the second pipe and meets portion, and the outer surface that contiguous this second pipe of this second pipe fitting meets portion has the screw thread all round, this second outer sleeve is for being sheathed on this second pipe and connecing in portion and being threadedly engaged with all round by the of the 4th internal thread and this second pipe fitting.
Air tight joint of the present utility model by this tool joint pin assembly and this female joint assembly when being threadedly engaged with and packing is placed in the first packing ring between this tool joint pin assembly and this female joint assembly, to realize airtight effect, and this tool joint pin assembly and this female joint assembly get loose when having firm combination and safe and reliable effect and can avoid using for a long time.
[accompanying drawing explanation]
Fig. 1 is the decomposing schematic representation of the utility model embodiment's air tight joint;
Fig. 2 is the sectional view of the utility model embodiment's air tight joint;
Fig. 3 is still unconjugated schematic diagram of the utility model embodiment's the tool joint pin assembly of air tight joint and female joint assembly;
Fig. 4 is that the tool joint pin assembly of the utility model embodiment's air tight joint is combined with female joint assembly and the schematic diagram of gas flow during external gas piping;
Fig. 5 is that the utility model embodiment's air tight joint is along the structural representation in the cross section of A-A line segment in Fig. 2.
[symbol description]
1 tool joint pin assembly
10 first pipe fittings
11 compressed part
12 pushing and pressing parts
13 first outside threads
14 first pipes meet portion
15 the 3rd outside threads
2 female joint assemblies
20 connect outer tube
21 first internal threads
22 limited parts
30 connect inner tube
31 cutting graftage parts
32 barricades
33 second outside threads
34 first rooms
35 second rooms
40 first packing rings
50 second pipe fittings
51 second internal threads
52 the 3rd rooms
53 second pipes meet portion
54 screw threads all round
60 pistons
61 flow path portion
62 block walls
63 connecting parts
64 support wall
65 groove runners
70 second packing rings
80 springs
90 first outer sleeves
91 the 3rd internal threads
100 second outer sleeves
101 the 4th internal threads
3,4 gas lines
[embodiment]
For fully understanding the purpose of this utility model, feature and effect, now by following specific embodiment, and coordinate accompanying drawing, the utility model is elaborated, be described as follows:
Please refer to Fig. 1 to Fig. 5, Fig. 1 is the decomposing schematic representation of the utility model embodiment's air tight joint, Fig. 2 is the structural representation of the utility model embodiment's air tight joint, Fig. 3 is still unconjugated schematic diagram of the utility model embodiment's the tool joint pin assembly of air tight joint and female joint assembly, Fig. 4 is that the tool joint pin assembly of the utility model embodiment's air tight joint is combined with female joint assembly and the schematic diagram of gas flow during external gas piping, and Fig. 5 is that the utility model embodiment's air tight joint is along the structural representation in the cross section of A-A line segment in Fig. 2.
Please refer to Fig. 1 to Fig. 4, the utility model embodiment's air tight joint comprises tool joint pin assembly 1 and the female joint assembly 2 that can mutually combine.
The tool joint pin assembly 1 of this air tight joint mainly comprises the first pipe fitting 10, on one end of this first pipe fitting 10, there is compressed part 11 and pushing and pressing part 12 (Fig. 2 to Fig. 4), and the outer surface of this first pipe fitting 10 has the first outside thread 13, contiguous this compressed part 11 of this first outside thread 13.
The female joint assembly 2 of this air tight joint mainly comprises and connects outer tube 20, connects inner tube 30, the first packing ring 40, the second pipe fitting 50, piston 60, the second packing ring 70 and spring 80.The internal surface of this connection outer tube 20 has the first internal thread 21 and limited part 22, and this first internal thread 21 is extended internally for engaging with the first outside thread 13 of this first pipe fitting 10 by one end of this connection outer tube 20; This connection inner tube 30 is assembled in this connection outer tube 20, one end of this connection inner tube 30 is formed with cutting graftage part 31 and barricade 32, and the other end of this connection inner tube 30 has the second outside thread 33,31 pairs of this cutting graftage parts should the first pipe fitting 10 pushing and pressing part 12, these barricade 32 these cutting graftage parts 31 of next-door neighbour, and this connection inner tube 30 runs through and is formed with the first room 34 and second room 35 of connection, and the cross section of this first room 34 is less than this second room 35; This first packing ring 40 is around being arranged on the cutting graftage part 31 of this connection inner tube 30; Surperficial the second outside thread 33 joints that there is the second internal thread 51 and be connected inner tube 30 with this within one end of this second pipe fitting 50, and this second pipe fitting 50 has the second room 35 that the 3rd room 52, the three rooms 52 are communicated with these connection inner tubes 30; This piston 60 has flow path portion 61, block wall 62 and connecting part 63, this flow path portion 61 and this connecting part 63 lay respectively at the both sides of this block wall 62, this flow path portion 61 be arranged in the first room of this connection inner tube 30 34 and these flow path portion 61 front ends there is the wall of supporting 64; This second packing ring 70, around being arranged in the flow path portion 61 of this piston 60, when the block wall 62 of this piston 60 pushes this second packing ring 70, is closed between this first room 34 and this second room 35; These spring 80 one end are arranged on the connecting part 63 of this piston 60, and the other end is arranged in this second pipe fitting 50, so that this piston 60 is back and forth in this first room 34, this second room 35 and the 3rd room 52.
In the utility model embodiment, as shown in Figures 3 and 4, when the first pipe fitting 10 screwed joint of this tool joint pin assembly 1 are during in the connection outer tube 20 of this female joint assembly 2, these pistons 60 of pushing and pressing part 12 pushing and pressing of this first pipe fitting 10 support wall 64 until contact the cutting graftage part 31 of this connection inner tube 30, this piston 60 is pushed and moves towards the 3rd room 52, make this block wall 62 not push this second packing ring 70, this tool joint pin assembly 1 is communicated with this female joint assembly 2, simultaneously, the compressed part 11 of this first pipe fitting 10 is relative with the barricade 32 of this connection inner tube 30 approaches and pushes this first packing ring 40 of packing, so that realize airtight between this tool joint pin assembly 1 and this female joint assembly 2, this first pipe fitting 10 is connected gap between outer tube 20 and this first pipe fitting 10 and is connected gap between inner tube 30 with this by this first packing ring, 40 sealings with this, and avoid the Leakage Gas by this air tight joint.
In the present embodiment, as shown in the figure, one end of this first pipe fitting 10 forms recess and forms steppedly, and this compressed part 11 is positioned at the end face of this first pipe fitting 10, and this pushing and pressing part 12 is positioned at the bottom surface of this recess, and this compressed part 11 parallels with this pushing and pressing part 12.When the first pipe fitting 10 screwed joint of this tool joint pin assembly 1 are during in the connection outer tube 20 of this female joint assembly 2, this connects inner tube 30 and approaches towards this first pipe fitting 10, what make these pushing and pressing part 12 these pistons 60 of pushing and pressing supports wall 64 until contact the cutting graftage part 31 of this connection inner tube 30, the cutting graftage part of this connection inner tube 30 is placed in the recess of one end of this first pipe fitting 10, simultaneously, this piston 60 is pushed and moves towards the 3rd room 52, make this block wall 62 not push this second packing ring 70, this tool joint pin assembly 1 is communicated with this female joint assembly 2.
As shown in Figures 1 and 5, the flow path portion 61 of the utility model embodiment's piston 60 is the surperficial cylinder with plurality of grooves runner 65, this groove runner 65 is extended vertically by this block wall 62, coordinate shown in Fig. 4, when this block wall 62 does not push this second packing ring 70 (this block wall 62 does not clamp this second packing ring 70 with the wall of this second room 35), this first room 34 can be communicated with this second room 35 via this groove runner 65, gas can flow to tool joint pin assembly 1 and flow out from this female joint assembly 2 along direction D, and this air tight joint is opening state.Coordinate shown in Fig. 3, when tool joint pin assembly 1 is not during in conjunction with this female joint assembly 2, these block wall 62 these second packing rings 70 of contact, extruding clamps this second packing ring 70 to this block wall 60 with relative the approaching of wall of this second room 35, and the one end that makes this groove runner 62 be communicated with this second room 35 is closed, and then make to be closed between this first room 34 and this second room 35, this air tight joint is closed condition.By this, when this tool joint pin assembly 1 is bonded to this female joint assembly 2, this air tight joint forms opening state; When tool joint pin assembly 1 is dismantled separation by this female joint assembly 2, this air tight joint forms closed condition.
In the present embodiment, as shown in Figures 1 to 4, this tool joint pin assembly 1 further comprises the first outer sleeve 90, this first outer sleeve 90 has the 3rd internal thread 91, and on the other end of these the first pipe fitting 10 relative these compressed part 11, there is the first pipe and meet portion 14, and the outer surface that contiguous these first pipes of this first pipe fitting 10 meet portion 14 has the 3rd outside thread 15, this first outer sleeve 90 connects in portion 14 and by the 3rd internal thread 91 and engages with the 3rd outside thread 15 of this first pipe fitting 10 for being sheathed on this first pipe.When using the utility model embodiment's air tight joint extend or connect gas piping, gas line 3 can be sheathed on to this first pipe connects in portion 14, and this first outer sleeve 90 is spirally connected and is bonded to this first pipe fitting 10, and then making this gas line 3 be fixed in this first outer sleeve 90 and this first pipe connects between portion 14, the gas that is flow to this tool joint pin assembly 1 by this female joint assembly 2 flow to this gas line 3 in this first pipe fitting 10.
In the present embodiment, as shown in Figures 1 to 4, this female joint assembly 2 further comprises the second outer sleeve 100, this second outer sleeve 100 has the 4th internal thread 101, and the other end of these the second pipe fitting 50 relative these the second internal threads 51 has the second pipe and meets portion 53, and the outer surface that contiguous these second pipes of this second pipe fitting 50 meet portion 53 has the screw thread 54 all round, this second outer sleeve 100 for be sheathed on this second pipe and connect in portion 53 and by the 4th internal thread 101 and this second pipe fitting 50 all round screw thread 54 engage.When using the utility model embodiment's air tight joint, the gas line 4 that connects gas supply source (not shown) is sheathed on to this second pipe to be connect in portion 53, and this second outer sleeve 100 is spirally connected and is bonded to this second pipe fitting 50, and then making this gas line 4 be fixed in this second outer sleeve 100 and this second pipe connects between portion 53, the gas of being exported by gas supply source is flowed in the second pipe fitting 50 of these female joint assemblies 2 by this gas line 4.
In sum, the utility model embodiment's air tight joint compresses the first packing ring being placed between this tool joint pin assembly and this female joint assembly when being threadedly engaged with by this tool joint pin assembly and this female joint assembly, to realize airtight effect, and this tool joint pin assembly and this female joint assembly get loose when having firm combination and safe and reliable effect and can avoid using for a long time.
The utility model discloses with preferred embodiment hereinbefore, yet it will be understood by those skilled in the art that this embodiment is only for describing the utility model, and should not be read as restriction scope of the present utility model.It should be noted, variation and the displacement of every and this embodiment's equivalence, all should be made as and be covered by category of the present utility model.Therefore, the protection domain of the utility model is when being as the criterion with claim.
Claims (4)
1. an air tight joint, is characterized in that, described air tight joint comprises:
Tool joint pin assembly, it comprises:
The first pipe fitting, has compressed part and pushing and pressing part on its one end, and the outer surface of described the first pipe fitting has the first outside thread, the contiguous described compressed part of this first outside thread;
Female joint assembly, for being combined with described tool joint pin assembly, it comprises:
Connect outer tube, its internal surface has the first internal thread and limited part, and described the first internal thread is extended internally for engaging with the first outside thread of described the first pipe fitting by one end of described connection outer tube;
Connect inner tube, it is assembled in described connection outer tube, one end of described connection inner tube is formed with cutting graftage part and barricade, and the other end of described connection inner tube has the second outside thread, the pushing and pressing part of corresponding described the first pipe fitting in described cutting graftage part, described barricade is close to described cutting graftage part, and described connection inner tube runs through and be formed with the first room and second room of connection, and the cross section of described the first room is less than described the second room;
The first packing ring, it is arranged on the cutting graftage part of described connection inner tube and against described barricade;
The second pipe fitting, the internal surface of its one end has the second internal thread and engages with described the second outside thread that is connected inner tube, and described the second pipe fitting has the 3rd room, and described the 3rd room is communicated with the second room of described connection inner tube;
Piston, it has flow path portion, block wall and connecting part, and described flow path portion and described connecting part are positioned at respectively the both sides of described block wall, and described flow path portion is arranged in the first room of described connection inner tube and described flow path portion front end has the wall of supporting;
The second packing ring, it, is closed between described the first room and this second room around being arranged in the flow path portion of described piston when the block wall of described piston pushes described the second packing ring; And
Spring, its one end is arranged on the connecting part of described piston, and the other end is arranged in described the second pipe fitting, so that described piston reciprocating is in described the first room, described the second room and described the 3rd room;
Wherein, when the first pipe fitting spiral of described tool joint pin assembly is engaged in the connection outer tube of described female joint assembly, what the pushing and pressing part of described the first pipe fitting pushed against described piston supports wall until contact the cutting graftage part of described connection inner tube, and the barricade of the compressed part of described the first pipe fitting and described connection inner tube is relative approaches and push the first packing ring described in packing.
2. air tight joint as claimed in claim 1, is characterized in that, described flow path portion has the plurality of grooves runner being extended vertically by described block wall.
3. air tight joint as claimed in claim 2, it is characterized in that, described tool joint pin assembly further comprises the first outer sleeve, described the first outer sleeve has the 3rd internal thread, and on the other end of the relatively described compressed part of described the first pipe fitting, there is the first pipe and meet portion, and the outer surface that contiguous described the first pipe of described the first pipe fitting meets portion has the 3rd outside thread, described the first outer sleeve connects in portion and by described the 3rd internal thread and engages with the 3rd outside thread of described the first pipe fitting for being sheathed on described the first pipe.
4. air tight joint as claimed in claim 3, it is characterized in that, described female joint assembly further comprises the second outer sleeve, described the second outer sleeve has the 4th internal thread, and the other end of relatively described the second internal thread of described the second pipe fitting has the second pipe and meets portion, and the outer surface that contiguous described the second pipe of described the second pipe fitting meets portion has the screw thread all round, described the second outer sleeve is for being sheathed on described the second pipe and connecing in portion and being threadedly engaged with all round by the of described the 4th internal thread and described the second pipe fitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320460172.8U CN203477714U (en) | 2013-07-30 | 2013-07-30 | Air-tight joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320460172.8U CN203477714U (en) | 2013-07-30 | 2013-07-30 | Air-tight joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203477714U true CN203477714U (en) | 2014-03-12 |
Family
ID=50226045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320460172.8U Expired - Fee Related CN203477714U (en) | 2013-07-30 | 2013-07-30 | Air-tight joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203477714U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500891A (en) * | 2014-12-27 | 2015-04-08 | 海盐四通管件制造有限公司 | Butter pipe joint |
-
2013
- 2013-07-30 CN CN201320460172.8U patent/CN203477714U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500891A (en) * | 2014-12-27 | 2015-04-08 | 海盐四通管件制造有限公司 | Butter pipe joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20150730 |
|
| EXPY | Termination of patent right or utility model |