CN201615297U - Sealing structure connected by bellows - Google Patents
Sealing structure connected by bellows Download PDFInfo
- Publication number
- CN201615297U CN201615297U CN2009203191965U CN200920319196U CN201615297U CN 201615297 U CN201615297 U CN 201615297U CN 2009203191965 U CN2009203191965 U CN 2009203191965U CN 200920319196 U CN200920319196 U CN 200920319196U CN 201615297 U CN201615297 U CN 201615297U
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- Prior art keywords
- bellows
- sealing
- liner
- nut
- connects
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- Expired - Lifetime
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Abstract
The utility model provides a sealing structure connected by bellows which belongs to the technical field of piping connection and solves the problems that a seal ring can generate the plastic deformation of inward holes when the current bellows implements sealing by squeezing the seal ring to reduce the flux of a through hole which directly affects fluid transportation. The sealing structure connected by bellows is arranged between the end part of the bellows and a pipe needed to be connected; the end part of the bellows is inserted into an adapter tube; a nut is sleeved on the bellows and is connected with the adapter tube through threads; a sealing element is arranged between the bellows and the nut; and the sealing element is sleeved on the bellows; and the edge of the nut is blocked on the end surface of the sealing element. The sealing element of the sealing structure connected by bellows is sleeved on the bellows, which has good stability; moreover, the connecting operation is simpler and more convenient.
Description
Technical field
The utility model belongs to pipe fitting interconnection technique field, relates to a kind of sealing configuration, particularly a kind of sealing configuration that is used for bellows and valve or pipe fitting joint.
Background technique
At present, the thin-wall corrugated tube that adopts stainless steel material to make can be crooked, and have the advantage of metal pipe concurrently, very is suitable for using in the pipelines such as tap water, oil and combustion gas.But it must be the prefabricated joint of engineering that deficiency is its linkage structure, finishes by specific linkage structure.Therefore, in use, the length of its pipe all is fixed length.This occasion that just makes that it can only be confined to is seldom used, and can not be widely used.
The applicant once applied for the Chinese patent of " a kind of linkage structure of bellows of novelty " by name at the problems referred to above, its patent No. is ZL200410084696.7, this linkage structure comprises two liners and a nut, the inboard of liner has the shape that is complementary with the bellows outer surface, spiro cap is on bellows, nut is connected with adapter by screw thread, and the shade of nut is blocked in the end of above-mentioned liner.
As can be seen, the linkage structure of above-mentioned bellows is to utilize liner to withhold on bellows, and bellows can not deviate from; Utilize nut to block liner then, at nut with to be exactly bellows after adapter is connected fixedly connected with taking over.Seal ring set between adapter and bellows can play seal action, leakage phenomenon occurs to prevent the joint.
Ring inner hole does not have positioning device, and corrugated tube end leans on seal ring and seals and since the corrugated tube end after connecting with take between for line contacts, so the stability of seal ring can not get assurance, drops easily and also inconvenience is installed.Therefore, people are squeezed into compressive state by constantly being screwed into nut with the end of bellows, make bellows and take between realize plane contact, thereby improve the stability of joint seal ring, and then improve sealing.But in extrusion process, seal ring can produce to the endoporus plastic deformation, and the flow of through hole is diminished, and directly influences the conveying of fluid.
Simultaneously, compression process not only during operating cost, effort, and bellows and adapter do not position in extrusion process, caliber very easily is offset.Easily cause the corrugated tube end caliber generation irregular deformation after the compression, its intensity and sealing are relatively poor with being connected of taking over, the while in influence.Use relevant special tool that corrugated tube end is compressed, also will additionally increase the expense of professional tool.
Summary of the invention
The purpose of this utility model is the existing the problems referred to above of sealing configuration at existing bellows joint, and proposed a kind of the needs corrugated tube end compression is face-flange, can guarantee the sealing configuration of sealing.
The purpose of this utility model can realize by following technical proposal: the sealing configuration that a kind of bellows connects, between the end that is arranged on bellows and the adapter that will be connected, the end of bellows inserts in the adapter, be with a nut on the bellows, nut is connected with adapter by screw thread, it is characterized in that, is provided with a Sealing between described bellows and described nut, and the sealing part is socketed on the described bellows, and the shade of above-mentioned nut is blocked on the end face of described Sealing.
In the sealing configuration that above-mentioned a kind of bellows connects, described Sealing is tubular.
When bellows is connected with adapter, nut connects in the process of taking over, utilize shade and take over will be between them Sealing along the axial compression of bellows, Sealing is compressed both sides outside the bellows radial inward, back and protrudes deformation simultaneously, the deformation part of protruding is squeezed in respectively on nozzle inner wall and the bellows outer wall, reaches better sealing effect.Wherein the deformation towards bellows outer wall direction partly also can be trapped in the trough of bellows, and bellows is axially locked, and it can not deviate from.The radial crush resistance of bellows is very high, so Sealing can not cause the interior compression deformation of corrugated tube end when being extruded.
In the sealing configuration that above-mentioned a kind of bellows connects, be provided with the liner of two tiles between described Sealing and the shade, the inner side surface shape and the bellows outer surface of liner are complementary, and two of liner is resisted against respectively on shade and the Sealing.Liner is withheld on bellows, and bellows can not deviate from; Utilize the shade of nut to block liner then, fixedly connected with taking over just making bellows after adapter is connected at nut, in the installation process, the force transmission of shade is pushed Sealing to liner.
In the sealing configuration that above-mentioned a kind of bellows connects, between described liner and the liner for being rotationally connected.Two liners can conveniently be installed when open the joint, can withhold on bellows again afterwards.
In the sealing configuration that above-mentioned a kind of bellows connects, described liner outer side surface has the retaining edge of protrusion, and retaining is along being resisted against on the shade.Such structure makes the internal diameter at nut shade place to do more.Therefore, just not needing plastic protective sleeve with the bellows outside to peel off in connection procedure very longly can connect too.
In the sealing configuration that above-mentioned a kind of bellows connects, described Sealing sidepiece axially open.Such structure can allow outside the easier installation of Sealing, can also make that the internal diameter size of Sealing does as far as possible with the bellows size near or less than bellows, it closely is socketed on the bellows, compression back better tightness.
In the sealing configuration that above-mentioned a kind of bellows connects, described Sealing is a seal washer, and adopts rubber material to be made.
In the sealing configuration that above-mentioned a kind of bellows connects, described Sealing is made up of two tile pad, and the inner wall shape of pad and bellows outer surface are complementary.Being a tubular after two pads are installed circumferentially envelopes bellows.
In the sealing configuration that above-mentioned a kind of bellows connects, there is a shoulder block described adapter inboard, and the shoulder block place is provided with and turns edge, and above-mentioned Sealing is resisted against on the shoulder block.
In this sealing configuration, adapter can be an end of a pipe joint, also can be an end of a valve.
Compared with prior art, the sealing configuration of this bellows connection has following advantage:
1, in this sealing configuration, Sealing is socketed on the bellows, and stability better.
2, do not need end compressive strain with bellows, attended operation is fairly simple, convenient, the expense that also can save special-purpose tool of compression simultaneously.
3, in installation process, utilize the deformation of Sealing to finish sealing, the extruding degree of Sealing determines its sealing, so the adjustability of sealing is bigger.
4, requiring in connectivity robustness is not extra high place, can remove two liners, directly utilizes the deformation part that is absorbed in the bellows trough after the Sealing deformation that bellows is locked, and it can not deviate from.
5, Sealing is tubular, can be squeezed in simultaneously when being compressed in a plurality of crests and a plurality of trough, form multiple-sealed, better tightness.
Description of drawings
Fig. 1 is the sectional structure schematic representation of sealing configuration in embodiment one that this bellows connects.
Fig. 2 is the transverse sectional view at sealing configuration liner place in embodiment one of this bellows connection.
Fig. 3 is the perspective view of sealing configuration liner in embodiment one of this bellows connection.
Fig. 4 is the sectional structure schematic representation of sealing configuration in embodiment two that this bellows connects.
Among the figure, 1, bellows; 2, take over; 21, shoulder block; 22, turn edge; 3, liner; 31, retaining edge; 4, nut; 41, shade; 5, Sealing; 6, groove.
Embodiment
Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
Embodiment one
As depicted in figs. 1 and 2, between the end that the sealing configuration that this bellows connects is arranged on bellows 1 and the adapter 2 that will be connected, the end of bellows 1 inserts in to be taken in 2, be with a nut 4 on the bellows 1, the inner outside thread of nut 4 is connected in to be taken on 2, and the outer end of nut 4 has the shade 41 that protrudes to the inside.Be provided with the liner 3 of two tiles between shade 41 and the adapter 2, liner 3 is buckled in the surface of bellows 1 and the inner side surface of liner 3 has the shape that is complementary with bellows 1 outer side surface.The inboard of adapter 2 has shoulder block 21, and the end of bellows 1 is resisted against on the shoulder block 21, and the shoulder block place is provided with and turns edge 22.
Be provided with the compressible seal member 5 of a tubular between the shoulder block 21 of liner 3 and adapter 2, sealing part 5 is enclosed within bellows 1 end, and two is resisted against respectively on shoulder block 21 and the liner 3.In the present embodiment, the seal washer that Sealing 5 is made for rubber material.
As shown in Figure 3, the outer side surface of liner 3 has the retaining of protrusion along 31, and retaining is positioned at the end of liner 3 and is resisted against on the shade 41 of nut 4 along 31.In the present embodiment, the inner side surface of liner 3 has one section helical groove 6 that is complementary with bellows 1 outside, and certainly according to actual conditions, it also is feasible that the helical groove 6 that is complementary with bellows 1 outside is two sections.
Taking over 2 is connected with bellows 1 in the process, at first Sealing 5 is enclosed within the end of bellows 1, should hold afterwards to insert and take in 2, in this process, liner 3 is also buckled in the lump, make liner 3 between bellows 1 and adapter 2, and then the nut 4 that will be placed on the bellows 1 is taken on 2 by being threaded in.Obviously, two liners 3 are tightly pushed down bellows 1, make be taken over 2 and fixedly connected with bellows 1.
Nut 4 with take over 2 processes that are connected, the shade 41 of nut 4 is resisted against the retaining of liner 3 along on 31.Promote in bellows 1 and the liner 3 insertion adapters 2 along 31 by retaining, in this process, Sealing 5 the inners are taken over 2 shoulder block 21 and are stopped, the outer end is subjected to the extruding force effect of liner 3, both sides outside bellows 1 radial inward, extruding back are protruded deformation simultaneously, the deformation part that Sealing 5 protrudes is squeezed in respectively takes on 2 inwalls and bellows 1 outer wall, reaches sealing effect.Wherein the deformation towards bellows 1 outer wall direction partly also can be trapped in the trough of bellows 1.Because the retaining of liner 3 is resisted against on the shade 41 of nut 4 along 31, such structure makes the internal diameter at nut 4 shades 41 places to do more.Therefore, just not needing plastic protective sleeve with bellows 1 outside to peel off in connection procedure very longly can connect too.
In this sealing configuration, taking over 2 can be an end of a pipe joint, also can be an end of a valve.
Embodiment two
As shown in Figure 4, requiring in some connectivity robustness is not extra high place, liner 3 can also be saved, and utilizes the deformation part that is absorbed in bellows 1 trough after Sealing 5 deformation that bellows 1 is axially locked, and it can not deviate from.
In addition, also Sealing 5 can be made the tubular of sidepiece axially open, such structure can allow outside the Sealing 5 easier installations, can make approaching with bellows 1 size as far as possible that the internal diameter size of Sealing 5 does, it closely is socketed on the bellows 1, compression back better tightness utilizes compressive deformation to fill up the gap of opening.
Or be Sealing 5 to be made two tile pad, the inner wall shape of pad and bellows 1 outer surface are complementary.Be a tubular after two pads are installed bellows 1 is circumferentially enveloped, the gap of joint can rely on the compressive deformation of pad to fill up equally.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (9)
1. the sealing configuration that connects of a bellows, between the end that is arranged on bellows (1) and the adapter that will be connected (2), the end of bellows (1) inserts in the adapter (2), be with a nut (4) on the bellows (1), nut (4) is connected with adapter (2) by screw thread, it is characterized in that, between described bellows (1) and described nut (4), be provided with a Sealing (5), and sealing part (5) is socketed on the described bellows (1), and the shade (41) of above-mentioned nut (4) is blocked on the end face of described Sealing (5).
2. the sealing configuration that a kind of bellows according to claim 1 connects is characterized in that described Sealing (5) is tubular.
3. the sealing configuration that a kind of bellows according to claim 1 and 2 connects, it is characterized in that, be provided with the liner (3) of two tiles between described Sealing (5) and the shade (41), the inner side surface shape of liner (3) and bellows (1) outer surface are complementary, and two of liner (3) is resisted against respectively on shade (41) and the Sealing (5).
4. the sealing configuration that a kind of bellows according to claim 3 connects is characterized in that, between described liner (3) and the liner (3) for being rotationally connected.
5. the sealing configuration that a kind of bellows according to claim 3 connects is characterized in that, described liner (3) outer side surface has the retaining of protrusion along (31), and retaining is resisted against on the shade (41) along (31).
6. the sealing configuration that a kind of bellows according to claim 2 connects is characterized in that described Sealing (5) sidepiece axially open.
7. the sealing configuration that a kind of bellows according to claim 2 connects is characterized in that described Sealing (5) is a seal washer, and adopts rubber material to be made.
8. the sealing configuration that a kind of bellows according to claim 2 connects is characterized in that described Sealing (5) is made up of two tile pad, and the inner wall shape of pad and bellows (1) outer surface is complementary.
9. the sealing configuration that a kind of bellows according to claim 1 and 2 connects is characterized in that there is a shoulder block (21) described adapter (2) inboard, and shoulder block (21) locates to be provided with turn edge (22), and above-mentioned Sealing (5) is resisted against on the shoulder block (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203191965U CN201615297U (en) | 2009-12-30 | 2009-12-30 | Sealing structure connected by bellows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203191965U CN201615297U (en) | 2009-12-30 | 2009-12-30 | Sealing structure connected by bellows |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201615297U true CN201615297U (en) | 2010-10-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203191965U Expired - Lifetime CN201615297U (en) | 2009-12-30 | 2009-12-30 | Sealing structure connected by bellows |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201615297U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102361279A (en) * | 2011-08-31 | 2012-02-22 | 长沙中联重工科技发展股份有限公司 | Wiring harness protecting device |
| CN111946911A (en) * | 2020-08-13 | 2020-11-17 | 吴寿华 | High-efficient stainless steel bellows convenient to connect |
-
2009
- 2009-12-30 CN CN2009203191965U patent/CN201615297U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102361279A (en) * | 2011-08-31 | 2012-02-22 | 长沙中联重工科技发展股份有限公司 | Wiring harness protecting device |
| CN111946911A (en) * | 2020-08-13 | 2020-11-17 | 吴寿华 | High-efficient stainless steel bellows convenient to connect |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101027 |