GB2026118A - Rotary fluid tight coupling - Google Patents
Rotary fluid tight coupling Download PDFInfo
- Publication number
- GB2026118A GB2026118A GB7924682A GB7924682A GB2026118A GB 2026118 A GB2026118 A GB 2026118A GB 7924682 A GB7924682 A GB 7924682A GB 7924682 A GB7924682 A GB 7924682A GB 2026118 A GB2026118 A GB 2026118A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hose
- cap
- gasket
- rotary fluid
- adaptor
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/08—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe
- F16L27/0804—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another
- F16L27/0808—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements extending coaxially for some distance from their point of separation
- F16L27/0812—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements extending coaxially for some distance from their point of separation with slide bearings
- F16L27/082—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements extending coaxially for some distance from their point of separation with slide bearings having axial sealing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/08—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe
- F16L27/0804—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another
- F16L27/0808—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements extending coaxially for some distance from their point of separation
- F16L27/0824—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements extending coaxially for some distance from their point of separation with ball or roller bearings
- F16L27/0832—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements extending coaxially for some distance from their point of separation with ball or roller bearings having axial bearings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
Abstract
A rotary fluid tight coupling comprises a hose-connecting adaptor (4) and a hose-connecting sleeve (7) rotatably supported on the hose-connecting adaptor by at least one bearing (5) and at least one circular gasket (6), the hose-connecting sleeve (7) being subdivided into a bearing sleeve (7a) and a cap (7b) screwed on to it, the cap having a connection (8) for a hose, and the gasket (6) being located between the cap (7b) and the adjacent end (9) of the adaptor (4) and having pressure- equalization surfaces (10, 11) on both sides. Screwing of the cap (7b) on the bearing sleeve (7a) is adjusted to set the compression of the gasket (6) and secured by a locking ring (12), while a clamping ring (13) fixes the gasket in the cap. The gasket (6) has an oblique portion (15) making contact with the end (9) of the adaptor (4), having the pressure-equalization surfaces (10, 11), with a central axial flange (16) contiguous therewith and merging into an inner wall of the cap, and a hole (18) leads from the hose connection (8) of the cap to a chamber (17) in the cap closed by the gasket (6). <IMAGE>
Description
SPECIFICATION
Rotary fluid coupling
This invention relates to a rotary fluid coupling for insertion into a hose, particularly a high-pressure hose with a spraying nozzle attached at the free end of the hose, the coupling comprising a hoseconnecting adaptor and a hose-connecting sleeve rotatably supported on the hose-connecting adaptor by the interposition of at least one bearing and at least one circular gasket.
The cleaning out of channels, particularly waste water channels, pipes or the like often takes place by means of a spraying nozzle moving through the channel to be cleaned out, to which nozzle a high-pressure hose is attached. In such a case the best cleaning effect is only obtained if the spraying nozzle moves through the channel in an aligned position. Yet in course of progress of the cleaning, or for other reasons, twisting of the high-pressure hose is often unavoidable. However, twisting movements resulting from this should not be transmitted to the spraying nozzle if the cleaning effect is to remain unimpaired. Forthis reason a rotary fluid coupling is inserted into the high-pressure hose, this being at a short distance behind the spraying nozzle which is connected to the coupling by a short length of hose.
Such a rotary fluid coupling can however only fulfil its purpose satisfactorily, i.e. compensate for twisting movements of the high-pressure hose, if adequate freedom of movement is guaranteed, bearing in mind the high pressure existing inside the hose. It is here that the invention is applied.
The object of the invention is to create a rotary fluid coupling for insertion into a hose, which coupling is outstanding for freedom of rotational movement even under extremely high pressure, and also for a relatively simple and functionally appropriate form of construction.
According to the present invention, a rotary fluid coupling comprises a hose-connecting adaptor and a hose-connecting sleeve rotatably supported on the hose-connecting adaptor by the interposition of at least one bearing and at least one circular gasket, the hose-connecting sleeve being subdivided into a bearing sleeve and a cap screwed on to it, the cap having a connection for a hose and the circular gasket being located between the cap and the adjacent end of the hose-connecting adaptor and having pressure-equalization surfaces on both sides of the gasket. If care is taken to obtain pressure equalization between the two sides of the sealing disc located between the screw cap and the hoseconnecting adaptor, there is no impairment of the freedom of rotational movement between the cap screwed on to the bearing sleeve and the hoseconnecting adaptor even at extremely high pressure.
Consequently transmission of twisting movements of the hose to a spraying nozzle attached thereto is eliminated and correct positioning of the nozzle during the cleaning process is always ensured. In fact the loading on the gasket in the transition region between the cap and the hose-connecting adaptor is considerably relieved, whilst pressure-tightness is ensured by quite low initial tightening of the cap against the gasket and hence against the adjacent end of the hose-connecting adaptor.
Further advantageous features of the invention will now be described. The bearing sleeve may be rotatably supported on the hose-connecting adaptor by anti-friction bearings. Of course in principle the use of a plain journal bearing is conceivable. To obtain the necessary initial compression of the gasket, the cap screwed on to the bearing sleeve is preferably adjustable and securable by means of a locking ring. Preferably, a clamping ring with external thread and encircling the hose-connecting adaptor is screwed into the cap, for the gasket to be clamped between the clamping ring and a shoulder in the cap. However the pre-loading between the cap and the adjacent end of the hose-connecting adaptor is not affected by this.The gasket preferably bears by an oblique portion against an outer edge of the adjacent end of the hose-connecting adaptor, with the pressure-equalizing surfaces on either side of the oblique portion. The gasket has a central axial flange contiguous with the oblique portion having the pressure-equalization surfaces and merging into an inner wall of the cap. Finally, the gasket closes a pressure-equalization chamber on the inside of the cap, and a pressure-equalizing hole leads from the hose connection of the cap to the pressureequalization chamber.
The advantages achieved by the invention are essentially to be seen in that a rotary fluid coupling for insertion into a hose, particularly a high-pressure hose with a spraying nozzle for the cleaning out of channels, particularly waste water channels, pipes or the like, is provided and which on account of pressure-equalization between the rotatable parts is outstanding for freedom of rotational movement, so that twists occurring in the high-pressure hose cannot be transmitted to the spraying nozzle, which is aligned for maximum cleaning effect. In addition to this a simple and functionally appropriate form of construction is ensured.
An embodiment of the invention will now be described by way of example only, with reference to the accompanying drawings, in which:
Figure 1 is a side elevation of a length of hose incorporating a rotary fluid coupling in accordance with the invention, and with a spraying nozzle attached; and
Figure 2 is an axial section to a larger scale through the coupling of Figure 1.
The rotary fluid coupling 1 shown in Figure 1 inserted into a hose 2, particularly a high pressure hose, with a spraying nozzle 3 attached at the free end of the hose, consists of a hose-connecting adaptor 4 and a hose-connecting sleeve 7 rotatably supported on the hose-connecting adaptor by intermediate bearings 5 and a circular gasket 6. The hose-connecting sleeve 7 is subdivided into a bearing sleeve 7a and a cap 7b screwed on to it, the cap having an internally threaded socket for the hose.
The circular gasket is located between the cap 7b and the adjacent end 9 of the hose-connecting adaptor 4, and has pressure-equalization surfaces 10, 11 on either side of the gasket. The bearing sleeve7a is rotatably supported on the hoseconnecting adaptor 4 by intermediate anti-friction bearings. The cap 7b screwed on to bearing sleeve 7a is adjustable and is secured by means of a locking ring 12. A clamping ring 13 with external thread, encircling the hose-connecting adaptor 4, is screwed into the cap 7b, and the gasket 6 is clamped between this clamping ring 13 and a shoulder 14 in the cap 7b.
The initial compression of the gasket 6 results however from adjustment of the cap 7b on the sleeve 7a. The gasket bears by an oblique portion 15 against an outer edge of the end 9 of the hoseconnecting adaptor 4, with the pressure-equalization surfaces 10, 11 on either side of the oblique portion.
A central axial flange 16 is contiguous with the oblique portion having the pressure-equalization surfaces and merges into an inner wall of the cap 7b.
The sealing gasket 6 closes an annular pressureequalization chamber 17 on the inside of the cap 7b, and a pressure-equalizing hole 18 leads to this pressure-equalization chamber 17 from the hose connection 8 of the cap 7b.
Claims (8)
1. A rotary fluid coupling for insertion into a hose comprising a hose-connecting adaptor and a hoseconnecting sleeve rotatably supported on the hoseconnecting adaptor by the interposition of at least one bearing and at least one circular gasket, the hose-connecting sleeve being subdivided into a bearing sleeve and a cap screwed on to it, the cap having a connection for a hose, and the gasket being located between the cap and the adjacent end of the hose-connecting adaptor and having pressureequalization surfaces on either side of the gasket.
2. A rotary fluid coupling as in Claim 1, wherein the bearing sleeve is rotatably supported on the hose-connecting adaptor by anti-friction bearings.
3. A rotary fluid coupling as in Claim 1 or Claim 2, wherein the cap screwed on to the bearing sleeve is adjustable and is secured by means of a locking ring.
4. A rotary fluid coupling as in any one of Claims 1 to 3, wherein a clamping ring with external thread, encircling the hose-connecting adaptor, is screwed into the cap, and the gasket is clamped between the clamping ring and a shoulder in the cap.
5. A rotary fluid coupling as in any one of Claims 1 to 4, wherein the gasket bears by an oblique portion against an outer edge of the adjacent end of the hose-connecting adaptor, with the pressureequalizing surfaces on either side of the oblique portion.
6. A rotary fluid coupling as in any one of Claims 1 to 5, wherein the gasket has a central axial flange contiguous with the oblique portion having the pressure-equalization surfaces and merges into an inner wall of the cap.
7. A rotary fluid coupling as in any one of Claims 1 to 6, wherein the gasket closes a pressure, equalization chamber on the inside of the cap and a pressure-equalizing hole leads from the hose connection of the cap to the pressure-equalization chamber.
8. A rotary fluid coupling substantially as hereinbefore described with reference to Figure 2 of the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7924682A GB2026118B (en) | 1979-07-16 | 1979-07-16 | Rotary fluid tight coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7924682A GB2026118B (en) | 1979-07-16 | 1979-07-16 | Rotary fluid tight coupling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2026118A true GB2026118A (en) | 1980-01-30 |
| GB2026118B GB2026118B (en) | 1982-07-14 |
Family
ID=10506525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7924682A Expired GB2026118B (en) | 1979-07-16 | 1979-07-16 | Rotary fluid tight coupling |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2026118B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5222486A (en) * | 1992-03-11 | 1993-06-29 | James Cromwell | Swivel connector for use in an oxygen line |
| EP0670448A1 (en) * | 1994-03-04 | 1995-09-06 | Ransburg Corporation | Rotary fluid coupling |
| GB2322173A (en) * | 1997-02-18 | 1998-08-19 | Sprays International Limited | In-line swivel holder for spray nozzles |
| US8714598B2 (en) | 2010-11-30 | 2014-05-06 | 2141632 Ontario Inc. | Hydraulic fluid coupling comprising an inline swivel joint |
-
1979
- 1979-07-16 GB GB7924682A patent/GB2026118B/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5222486A (en) * | 1992-03-11 | 1993-06-29 | James Cromwell | Swivel connector for use in an oxygen line |
| EP0670448A1 (en) * | 1994-03-04 | 1995-09-06 | Ransburg Corporation | Rotary fluid coupling |
| GB2322173A (en) * | 1997-02-18 | 1998-08-19 | Sprays International Limited | In-line swivel holder for spray nozzles |
| US8714598B2 (en) | 2010-11-30 | 2014-05-06 | 2141632 Ontario Inc. | Hydraulic fluid coupling comprising an inline swivel joint |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2026118B (en) | 1982-07-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |