CN208281681U - A kind of center-rotary joint - Google Patents
A kind of center-rotary joint Download PDFInfo
- Publication number
- CN208281681U CN208281681U CN201820818622.9U CN201820818622U CN208281681U CN 208281681 U CN208281681 U CN 208281681U CN 201820818622 U CN201820818622 U CN 201820818622U CN 208281681 U CN208281681 U CN 208281681U
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- axis
- oil groove
- annular oil
- returned
- seat
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Abstract
The utility model discloses a kind of center-rotary joints, axis is returned including in and return in being sheathed on axis and returned in axis be rotatably assorted in time seat, in return seat and returned in the duct of axis cooperation equipped with annular oil groove, in return axis and be equipped with axial oil circuit, in return seat be equipped with the first hydraulic fluid port, axis is returned in described is equipped with the first runner for being connected to axial oil circuit and annular oil groove, the width of the first runner is equal with the width of the annular oil groove and cross section gradually becomes smaller towards axial oil circuit direction, the bottom of first hydraulic fluid port is in back taper, the second flow channel being connected to the annular oil groove is equipped in the bottom of back taper.The utility model flows into annular oil groove after bottom is in back taper convergence pressurization from the oil liquid entered in the first hydraulic fluid port, oil liquid pressure is improved, and there is the process of compression and expansion during entering annular oil groove by the first hydraulic fluid port and second flow channel in oil liquid, and oil liquid temperature is reduced.
Description
Technical field
The utility model belongs to smoking article technical field more particularly to a kind of low temperature smoking set and its adiabatic apparatus.
Background technique
Center-rotary joint is one of the core Hydraulic Elements in many rotation class construction machinery hydraulic systems, for connecting
The relative rotation that control host gets on and off is chiefly used in high pressure, big flow occasion, and frequency of use is high, thus host system is to it
The performances such as intensity, service life, the pressure loss have very high requirement.Since center-rotary joint shape is irregular, it is existing in
It returns its shape of seat and mostly uses casting and forming, internal galleries are then realized by machining mode.
Chinese utility model patent 201721291262.3 discloses a kind of center-rotary joint, the first hydraulic fluid port and annular oil
Slot is gradually become smaller using the casting runner connection of " eight " font, radial hole towards axial oil circuit direction aperture, and product is greatly reduced
High-pressure high-flow work when part and along stroke pressure lose.But the patent still has the small problem of Fluid pressure.In addition,
In the small stress that will lead to shell of runner fillet that returns in seat concentrate, runner fillet is big to cause flow resistance to increase again, this is
One contradiction, therefore returning seat strength condition decline low flow resistance in how guaranteeing is a technical problem urgently to be resolved.
Utility model content
The application aims to solve at least one of the technical problems existing in the prior art.For this purpose, the purpose of this utility model
One of be to provide that a kind of pressure loss is small and center-rotary joint with function of increasing pressure.
In order to solve the above technical problems, the technical solution adopted by the utility model is:
A kind of center-rotary joint, axis is returned including in and return in being sheathed on axis and returned in axis be rotatably assorted in time
Seat, it is described in return seat in return axis cooperation duct in be equipped with annular oil groove, it is described in return axis be equipped with axial direction oil circuit, it is described in
Return seat and be equipped with the first hydraulic fluid port, it is described in return axis and be equipped with the first runner for being connected to axial oil circuit and annular oil groove, described first
The width of runner is equal with the width of the annular oil groove and cross section gradually becomes smaller towards axial oil circuit direction, first hydraulic fluid port
Bottom be in back taper, be equipped with the second flow channel that is connected to the annular oil groove in the bottom of back taper.
Further, the second flow channel and annular oil groove use size for the round-corner transition of R10-R15 in junction.
Further, the width of the annular oil groove is 8-16mm, and the roof and side wall of the annular oil groove are in intersection
Use size for the round-corner transition of R4-R5.
Further, the material that seat is returned in described is QT500 spheroidal graphite cast-iron.
Further, the section of first hydraulic fluid port is rounded.
The center-rotary joint of above-mentioned technical proposal, it is described in return seat on be located at annular oil groove two sides be respectively equipped with ring
Shape sealing ring mounting groove is equipped with chance oil expansion cushion rubber in the ring type seal mounting groove.
Compared with prior art, the utility model has the beneficial effects that:
1, the bottom of the first hydraulic fluid port is in back taper, and the second flow channel being connected to annular oil groove is equipped in the bottom of back taper,
It is flowed into annular oil groove after bottom is in back taper convergence pressurization from the oil liquid entered in the first hydraulic fluid port, oil liquid pressure is mentioned
Height, and there is the process of compression and expansion during entering annular oil groove by the first hydraulic fluid port and second flow channel in oil liquid,
Oil liquid temperature is reduced.
2, axis is returned in is equipped with the first runner for being connected to axial oil circuit and annular oil groove, width and the annular oil of first runner
The width of slot is equal and cross section gradually becomes smaller towards axial oil circuit direction aperture, is greatly reduced the work of product high-pressure high-flow
When part and along stroke pressure lose.
3, the first hydraulic fluid port section is rounded, it may be convenient to be screwed on external oil inlet pipe.
4, ring type seal mounting groove be set in return seat on, ensure that in return axis intensity, sealing ring using meet oil it is swollen
Swollen cushion rubber, directly adopt compared to the prior art conventional apron sealing, reduce in return axis in return seat assembly difficulty.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the cross-sectional view of the utility model；
Fig. 3 is the cross-sectional view in the direction X-X in Fig. 1；
Fig. 4 is the enlarged drawing in Fig. 2 at I.
Specific embodiment
The utility model is further described below in conjunction with the drawings and specific embodiments.
Referring to figures 1-4, center-rotary joint, which mainly returns seat 1 in and returns axis 2 in, forms, in return axis 2 be inserted in time seat 1
In, axis and seat can with relative rotation, in return 1 material of seat be QT500 spheroidal graphite cast-iron.In return on axis 2 and have axial oil circuit 3 oily with second
Mouthful connection, in return on seat 1 and have inner annular oil groove 4 and the first hydraulic fluid port 5, the section of the first hydraulic fluid port 5 is rounded, so as to convenient
It is connect with external oil pipe spiral.In axis and during seat relative rotation, in return seat 1 by annular oil groove 4 by the second hydraulic fluid port and
The connection of first hydraulic fluid port 5.
To keep oil liquid smooth enough during through-flow, in return on axis 2 and cast out first runner 6 to be connected to axial direction 3 He of oil circuit
The width of annular oil groove 4, first runner 6 is equal with the width of annular oil groove 4, and the cross section of first runner 6 is towards axial 3 side of oil circuit
To gradually becoming smaller.In the present embodiment, and the width of annular oil groove is equal and section is towards axial oil circuit direction for the width of first runner 6
Aperture gradually becomes smaller, be greatly reduced product high-pressure high-flow work when part and along stroke pressure lose.
Referring to fig. 2, the bottom of the first hydraulic fluid port 5 is in back taper, is equipped with the be connected to annular oil groove 4 in the bottom of back taper
Two runners 7.By above-mentioned design, the oil liquid entered out of first hydraulic fluid port 5 is after the convergence pressurization of back taper bottom through second
Road 7 flows into annular oil groove 4, and oil liquid pressure is improved, and oil liquid is entering ring by the first hydraulic fluid port 5 and second flow channel 7
There is the process of compression and expansion during shape oil groove 4, oil liquid temperature is reduced.
To further decrease the pressure loss and preventing stress from concentrating, the intensive analysis and flow field resistance analysis by finite element
Theoretical calculation method small digging center-rotary joint shell runner fillet parameter is carried out excellent in conjunction with the durability test of rack
Change, can be effectively reduced the flowing of fluid in runner under conditions of guaranteeing casing rigidity in the development phase of center-rotary joint
Resistance.Specifically, second flow channel 7 and annular oil groove 4 use size for the round-corner transition of R10-R15 at junction (at S1), ring
The width of shape oil groove 4 is 8-16mm, and the roof and side wall of annular oil groove 4 use size for the circle of R4-R5 at intersection (at S2)
Angle transition.
Referring to fig. 2, the center-rotary joint of above-mentioned technical proposal, in return seat 1 on be located at annular oil groove 4 two sides set respectively
There is ring type seal mounting groove 8, chance oil expansion cushion rubber 9, ring type seal mounting groove 8 are installed in ring type seal mounting groove 8
Be set to back on seat 1, ensure that in return axis intensity, sealing ring using meet oil expansion cushion rubber, compared to the prior art directly
Sealed using conventional apron, reduce in return axis in return seat assembly difficulty.
Referring to Fig. 1, for return in improving axis 2 and in return sealing and dust-proof effect between seat 1, returned in axis 2 and in return seat 1
End cooperation section be equipped with sealing structure, the sealing structure include in being set to return axis and in return seat support outside framework oil seal,
Dustband, washer 10 and circlip 11.
Above-described embodiment is only to clearly demonstrate examples for clearly illustrating the present invention, rather than the restriction to embodiment.
For those of ordinary skill in the art, other various forms of variations can also be made on the basis of the above description
Or it changes.Here without can not be also exhaustive to all embodiments.And the obvious variation thus amplified out
Or it changes among still in the protection scope of the utility model.
Claims (6)
1. a kind of center-rotary joint, axis is returned including in and returned on axis in being sheathed on and returned in axis be rotatably assorted in time seat,
Return seat in described and returned in the duct of axis cooperation and be equipped with annular oil groove, it is described in return axis and be equipped with axial oil circuit, it is described in time
Seat is equipped with the first hydraulic fluid port, it is characterised in that: and axis is returned in described is equipped with the first runner for being connected to axial oil circuit and annular oil groove,
The bottom of first hydraulic fluid port is in back taper, and the second flow channel being connected to the annular oil groove, institute are equipped in the bottom of back taper
The width for stating first runner is equal with the width of the annular oil groove and cross section gradually becomes smaller towards axial oil circuit direction.
2. center-rotary joint according to claim 1, it is characterised in that: the second flow channel and annular oil groove are connecting
Place uses size for the round-corner transition of R10-R15.
3. center-rotary joint according to claim 1, it is characterised in that: the width of the annular oil groove is 8-16mm,
The roof and side wall of the annular oil groove use size for the round-corner transition of R4-R5 in intersection.
4. center-rotary joint according to claim 1, it is characterised in that: the material for returning seat in described is QT500 spheroidal graphite
Cast iron.
5. center-rotary joint according to claim 1, it is characterised in that: the section of first hydraulic fluid port is rounded.
6. center-rotary joint according to claim 1-5, it is characterised in that: returned in described and be located at ring on seat
The two sides of shape oil groove are respectively equipped with ring type seal mounting groove, and the oily expansion glue of chance is equipped in the ring type seal mounting groove
Circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820818622.9U CN208281681U (en) | 2018-05-28 | 2018-05-28 | A kind of center-rotary joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820818622.9U CN208281681U (en) | 2018-05-28 | 2018-05-28 | A kind of center-rotary joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208281681U true CN208281681U (en) | 2018-12-25 |
Family
ID=64705388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820818622.9U Active CN208281681U (en) | 2018-05-28 | 2018-05-28 | A kind of center-rotary joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208281681U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110500464A (en) * | 2019-08-21 | 2019-11-26 | 江苏长龄液压股份有限公司 | A kind of compact center-rotary joint |
| CN111895197A (en) * | 2020-07-16 | 2020-11-06 | 江苏长龄液压股份有限公司 | Hydraulic central swivel joint with radial casting oil circuit cavity |
-
2018
- 2018-05-28 CN CN201820818622.9U patent/CN208281681U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110500464A (en) * | 2019-08-21 | 2019-11-26 | 江苏长龄液压股份有限公司 | A kind of compact center-rotary joint |
| CN111895197A (en) * | 2020-07-16 | 2020-11-06 | 江苏长龄液压股份有限公司 | Hydraulic central swivel joint with radial casting oil circuit cavity |
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