CN202371175U - Pneumatic sealing movable joint - Google Patents
Pneumatic sealing movable joint Download PDFInfo
- Publication number
- CN202371175U CN202371175U CN2011205571538U CN201120557153U CN202371175U CN 202371175 U CN202371175 U CN 202371175U CN 2011205571538 U CN2011205571538 U CN 2011205571538U CN 201120557153 U CN201120557153 U CN 201120557153U CN 202371175 U CN202371175 U CN 202371175U
- Authority
- CN
- China
- Prior art keywords
- movable joint
- pneumatic
- sealing movable
- pneumostop
- distensible ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a pneumatic sealing movable joint, belongs to the technical field of pneumatic accessories, and comprises the pneumatic sealing movable joint. The pneumatic sealing movable joint mainly comprises an outer casing, wherein an air inlet is arranged at the top end of the outer casing, an air cavity, a metal piston and an expansion ring are successively arranged inside the outer casing and below the air inlet. The pneumatic sealing movable joint has the advantages of being simple in structure, compact in layout, low in cost, reasonable in design, flexible in sealing mode, stable in sealing performance, and long in service life.
Description
Technical field
The utility model relates to a kind of pneumostop union, belongs to pneumatic auxiliary technical field.
Background technique
In technical fields such as oil, chemical industry, iron and steel, automobile, usually need carry out sealing detection to the various tubular containers that can't fix.When such container being done the tightness detection, for the mouth of pipe that exposes,, in the time of can't fixing sealing with the structure of lock screw, often adopt in the existing technology to have necessarily flexible general plug owing to there is not fixable place, utilize plug to come the shutoff mouth of pipe.But when feeding certain air pressure in the container, under the effect of air pressure, plug tends to gone out by the air pressure in the container, can't reach seal action.
Can therefore, design a novel seal arrangement to overcome above-mentioned defective, becoming those skilled in the art has technical barrier to be solved.
The model utility content
The utility model is intended to overcome the deficiency of existing technology, provides a kind of sealability stable and mode pneumostop union flexibly.Its technological scheme that adopts is following:
This pneumostop union mainly comprises: shell, be provided with suction port on the top of shell, and be provided with air cavity, metallic piston and distensible ring in order under portion, the suction port in the enclosure.
Preferably, distensible ring is the rubber distensible ring that circumnutates with different size.
Compared with prior art, the utlity model has following advantage:
1, sealing means is flexible, and sealability is stable: adopt the structure of the piston type+distensible ring that can circumnutate, because the effect of air pressure, be close to outer tube wall after forcing distensible ring to produce deformation, make sealability more stable, and more reliable; And use flexibly, can make different distensible rings, when being used for the ferrule of different tube diameters, only needing to change the inner core distensible ring and get final product according to different calibers, flexible, highly versatile;
2, wear-resisting, long service life; Distensible ring adopts the rubber that circumnutates to process, and has effective, the wear-resisting characteristics of elastic strain, when reality is used the life-span longer, reduced cost of material;
3, volume is little, and is in light weight, more convenient operation; The sealing compact structure is reasonable, and volume is little, and amount is light, and installation and easy to maintenance is more simple and convenient when manipulating, and has improved working efficiency.
Description of drawings
Fig. 1: figure is partly cutd open in the pneumostop movable joint structure signal of the utility model.
Symbol description: 1, shell; 2, metallic piston; 3, distensible ring; 4, air cavity; 5, suction port.
Embodiment
Below in conjunction with accompanying drawing and instance the utility model is described further:
An embodiment of the utility model is as shown in Figure 1, and (left-half is a sectional view; Right half part is an external view); This pneumostop union mainly has shell 1; Be provided with suction port 5 on the top of shell 1, under shell 1 inside, suction port 5, be provided with air cavity 4, metallic piston 2 and distensible ring 3 in order.
Distensible ring 3 for example adopts the rubber that circumnutates to process, and has characteristics such as elastic strain is effective, tightness is high, wear-resisting; Because metallic piston 2 moves downward the gas pressure that causes, be close to outer tube wall after forcing distensible ring 3 to produce transverse deformations (distending), make sealability reliable and stable; Can make and use the distensible ring 3 of different size according to different calibers, when being used for the ferrule of different tube diameters, only needing to change a distensible ring 3 and get final product, flexible, highly versatile.
The installation and the working procedure of this pneumostop union of brief description: select suitable distensible ring 3 to pack in the pneumostop union of the utility model according to the mouth of pipe of container to be sealed; Use this pneumostop union to fill in the mouth of pipe of container to be sealed from top to bottom, its mouth of pipe is roughly sealed by distensible ring 3; In air cavity 4, continue injecting gas from suction port 5; Metallic piston 2 moves downward under air cavity 4 internal air pressure effects, because metallic piston 2 moves downward the gas pressure that causes, is close to outer tube wall after forcing distensible ring 3 horizontal distendings; Air pressure in the air cavity 4 is big more; Then metallic piston 2 moves downward manyly more, and the transverse deformation that distensible ring 3 produces is big more, and the seal action of its line up is stable more, reliable; When feeding air pressure in the container, as long as its air pressure just can not influence the sealing effect of pneumostop union not even as big as causing that piston 2 oppositely moves upward.After sealing is accomplished, only need suction port 5 and air are connected, then the air pressure in the air cavity finally reaches standard atmosphere pressure, and metallic piston 2 moves upward, and distensible ring 3 transverse shrinkage then can be taken out this pneumostop union from the mouth of pipe.
Show through using; The utility model is than the seal joint structure of conventional construction compact and reasonable more, long service life, and sealing effect is more stable; More convenient operation can be widely used in the system that the various tubuloses that can't fix in the fields such as oil, chemical industry, iron and steel, automobile need be used for sealing detection.
With way of example the utility model is illustrated above, but the utility model is not limited to above-mentioned specific embodiment, all any changes done based on the utility model or modification all belong to the utility model and require the scope protected.
Claims (2)
1. pneumostop union is characterized in that comprising shell (1), is provided with suction port (5) on the top of said shell (1), under said shell (1) inside, suction port (5), is provided with air cavity (4), metallic piston (2) and distensible ring (3) in order.
2. a kind of pneumostop union according to claim 1 is characterized in that, said distensible ring (3) is for having the rubber distensible ring that circumnutates of different size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205571538U CN202371175U (en) | 2011-12-20 | 2011-12-20 | Pneumatic sealing movable joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205571538U CN202371175U (en) | 2011-12-20 | 2011-12-20 | Pneumatic sealing movable joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202371175U true CN202371175U (en) | 2012-08-08 |
Family
ID=46594879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205571538U Expired - Fee Related CN202371175U (en) | 2011-12-20 | 2011-12-20 | Pneumatic sealing movable joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202371175U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953606A (en) * | 2018-08-17 | 2018-12-07 | 宁波泰尔汽车部件有限公司 | A kind of novel pipeline sealing structure |
| CN109649884A (en) * | 2019-01-30 | 2019-04-19 | 宁波和信制药设备有限公司 | Small sterile temperature sensor interface |
-
2011
- 2011-12-20 CN CN2011205571538U patent/CN202371175U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953606A (en) * | 2018-08-17 | 2018-12-07 | 宁波泰尔汽车部件有限公司 | A kind of novel pipeline sealing structure |
| CN109649884A (en) * | 2019-01-30 | 2019-04-19 | 宁波和信制药设备有限公司 | Small sterile temperature sensor interface |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120808 Termination date: 20121220 |