CN102913702A - High pressure rotating joint capable of preventing backflowing - Google Patents
High pressure rotating joint capable of preventing backflowing Download PDFInfo
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- CN102913702A CN102913702A CN2012103765434A CN201210376543A CN102913702A CN 102913702 A CN102913702 A CN 102913702A CN 2012103765434 A CN2012103765434 A CN 2012103765434A CN 201210376543 A CN201210376543 A CN 201210376543A CN 102913702 A CN102913702 A CN 102913702A
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- valve seat
- filler opening
- check valve
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Abstract
The invention discloses a high pressure rotating joint capable of preventing backflowing. The joint comprises a joint shell (2), wherein one end of the joint shell (2) is rotatably arranged on a joint spindle (9), the other end of the joint shell (2) is provided with an oil inlet (21) and fixedly connected with a check valve capable of sealing the oil inlet (21). According to the rotating joint, the inner pressure of a high pressure oil cavity can be slowly released when a hydraulic system stops feeding oil to the high pressure oil cavity, so that the service lives of a roller spindle and a roller sleeve are prolonged.
Description
Technical field
The present invention relates to the metal shaping equipment technical field, particularly a kind of chicksan that prevents the quick backflow of high pressure oil that uses at rolling mill roll.
Background technique
In sheet metal, band, the paper tinsel operation of rolling, guarantee that the uniformity of plate face and the accuracy that guarantees plate shape all are very important.In order to obtain high-quality plate, band, paper tinsel, amount of deformation that must breaker roll compensates.In order to address this problem, the hydraulic expanding-forming roll has appearred recently, and this roll can be expanded axle sleeve by the internal pressure of accumulator between adjustable supporting roll axle sleeve and the roll shaft, thus control is because the caused work roll distortion of rolling load.Compare with traditional roll bending control system, the hydraulic expanding-forming roll directly acts on the center of strip, can effectively control the expansion of strip.In addition, in traditional milling train that this hydraulic expanding-forming roll can be installed on, directly substitute the support roll of original milling train, need not stop production and invest seldom, the roll after the installation can be brought into play than more senior in the past control advantage.
Fig. 1 is the structural principle schematic diagram of hydraulic expanding-forming roll.Wherein the hydraulic expanding-forming roll is comprised of roll mandrel 4, roll sleeve 41, chicksan 43 and supporting hydraulic system and control operation system.Be provided with high-voltage oil cavity 45 between mandrel and the roller shell, high pressure oil enters high-voltage oil cavity 45 through chicksan 43 by the roll oil duct 22 in the mandrel.Roll expands outside the roller shell under the effect of highly pressurised liquid and produces certain convexity.Adjustment fluid pressure size can stepless change roller shell convexity, proofreaies and correct rapidly the distortion such as bending, flattening of roll, thereby reaches the purpose of control panel shape.Interference fit is adopted at roller shell and mandrel two ends in certain-length, on the one hand highly pressurised liquid is sealed, and when bearing rolling load, transmits needed torque on the other hand, and guarantees the integral rigidity of roll.
When hydraulic system breaks down or during other situations, stop fuel feeding in the high-voltage oil cavity such as hydraulic system, the bulging roll system releases high pressure oil thereupon, one side of roll mandrel and roll sleeve will be subject to suddenly a larger radial pressure, thereby easily cause roll mandrel and roll sleeve destroyed, so need to stop in the high-voltage oil cavity behind the fuel feeding in hydraulic system, slowly pressure release in the high-voltage oil cavity, the radial pressure that roll mandrel and roll sleeve one side are subject to reduces gradually, to prolong the working life of roll mandrel and roll sleeve.
Summary of the invention
In order to solve that hydraulic system in the prior art stops in the high-voltage oil cavity pressure drop in the high-voltage oil cavity behind the fuel feeding and the easy destroyed technical problem of the roll mandrel that causes and roll sleeve, the invention provides a kind of this joint of anti-backflow chicksan and be provided with check valve, can stop to make slowly pressure release in the high-voltage oil cavity in the high-voltage oil cavity behind the fuel feeding in hydraulic system, prolong the working life of roll mandrel and roll sleeve.
The present invention for the technological scheme that solves its technical problem employing is: a kind of anti-backflow chicksan, comprise joint housing, one end of joint housing can be arranged on the joint mandrel rotationally, the other end of joint housing is provided with filler opening, and the other end of joint housing also is fixedly connected with the check valve that can seal filler opening.
Under the normal working, high pressure oil is pushed check valve open and is entered the roll oil duct from filler opening; When hydraulic system stopped in the high-voltage oil cavity fuel feeding, check valve can seal filler opening, and high pressure oil can slowly flow out from the slit between check valve and the filler opening, thus slowly pressure release in the realization high-voltage oil cavity.
Preferred joint housing also is provided with the joint base at an end that contains filler opening, and the joint base is provided with bottom tub, and filler opening is arranged on the bottom of bottom tub, and check valve is arranged in the bottom tub.
Preferred check valve has the check valve seat that is connected with joint housing, the check valve core that filler opening can be sealed, the check spring that is connected check valve seat and check valve core, and the check valve seat is provided with the valve seat oil guiding hole that is connected with filler opening.
Preferred check valve seat is formed with the valve seat groove of indent, and the valve seat oil guiding hole is arranged on the bottom of valve seat groove; Check valve core comprises spool head and valve rod, and valve rod is arranged in the valve seat groove, and valve core head section is positioned at the outside of valve seat channel opening end, and the closed end at its top and the shape of filler opening are complementary, and can be embedded in the filler opening.
On the preferred valve rod bossed annulus is set, and the annulus of this projection is contained in the valve seat groove; One end of check spring and the bottom butt of valve seat groove, the annulus butt of the other end of check spring and projection.
Preferred valve rod is the hollow article with runner, forms the store oil space between the bottom of bottom tub and the check valve seat, is provided with the through hole in connection runner and store oil space between the closed end of the annulus of projection and spool, and valve rod is plugged in the valve seat oil guiding hole.
The external diameter of the annulus of preferred projection equals the internal diameter of valve seat groove.
Be provided with the joint oil duct in the preferred joint mandrel, be provided with seal disc between joint mandrel and the joint base, be provided with the seal disc oil duct that is communicated with filler opening and joint oil duct in the seal disc.
Close contact between seal disc and the joint base is connected with the pressure compensation spring between seal disc and the joint mandrel.
Be provided with the lubricant oil district between joint housing and the joint mandrel, the arranged outside of joint mandrel has the lubricant oil filler opening, be provided with the lubricant oil oil input channel that is communicated with lubricant oil district and lubricant oil filler opening in the joint mandrel, the outside of joint mandrel also is provided with the lubricant oil oil outlet, also is provided with the lubricant oil oil road that is communicated with lubricant oil district and lubricant oil oil outlet in the joint mandrel.
The invention has the beneficial effects as follows: when the hydraulic system cut in the high-voltage oil cavity during fuel feeding, check valve can seal the joint oil duct, high pressure oil in the high-voltage oil cavity can slowly flow out in the outside from the slit between check valve and the filler opening to roll, the radial pressure that roll mandrel and roll sleeve are subject to slowly reduces gradually, thereby has prolonged the working life of roll mandrel and roll sleeve.
Description of drawings
Below in conjunction with accompanying drawing joint of the present invention is described in further detail.
Fig. 1 is hydraulic expanding-forming roll structure principle schematic.
Fig. 2 is the erection drawing of chicksan of the present invention.
Fig. 3 is the sectional view of chicksan middle joint base.
Fig. 4 is the sectional view of check valve seat in the chicksan.
Fig. 5 is the sectional view of check valve core in the chicksan.
Fig. 6 is the sectional view of chicksan middle joint mandrel.
Fig. 7 is the sectional view of seal disc in the chicksan.
Wherein 1. joint bases, 2. joint housing, 3. deep groove ball bearing, 4. roll mandrel, 5. bearing spacer, 6. joint end cap, 7. bulging fluorine rubber seal element, 8. viton seal ring, 9. joint mandrel, 10. end cap attachment screw, 11. the swivel joint fastening screw trip bolt, 13. pressure compensation springs, 14. seal discs, 15. screw, 18. check valve cores, 19. check springs, 20. the check valve seat, 21. filler openings, 22. roll oil ducts, 23. the lubricant oil district, 41. roll sleeves, 43. chicksans, 45. high-voltage oil cavity, 91. joint oil ducts, 92. lubricant oil filler openings, 93. the lubricant oil oil outlet, 94. lubricant oil oil input channels, 95. lubricant oil oil roads, 96. high pressure oil-feed duct, 101. bottom tubs, the bottom of 102. bottom tubs, 103. the store oil space, 141. seal disc oil ducts, 181. spool heads, 182. valve rod, 183. closed ends, the annulus of 184. projections, 185. runner, 187. through holes, 201. valve seat oil guiding holes, 202. the valve seat groove, the bottom of 203. valve seat grooves, 204. mounting holes.
Embodiment
Below in conjunction with accompanying drawing anti-backflow chicksan of the present invention is described in detail.A kind of anti-backflow chicksan 43, comprise joint housing 2, an end of joint housing 2 can be arranged on the joint mandrel 9 rotationally, and the other end of joint housing 2 is provided with filler opening 21, the other end of joint housing 2 also is fixedly connected with the check valve that can seal filler opening 21, sees Fig. 2, Fig. 3.
In normal operation, high pressure oil is pushed check valve open and is entered roll oil duct 22 from filler opening 21, and namely Fig. 2 and Fig. 3 mesohigh oil move at filler opening 21 places to push check valve open and continue from right to left provides pressure to left movement for high-voltage oil cavity; When the hydraulic system cut in the high-voltage oil cavity during fuel feeding, be that high pressure oil has lost when promoting power that it moves from right to left, filler opening 21 place's pressure reduce suddenly, check valve is with filler opening 21 sealings, then high pressure oil can slowly flow out from the slit between check valve and the filler opening 21, pressure in the high-voltage oil cavity slowly reduces, and has avoided pressure in the high-voltage oil cavity to reduce suddenly and destroys roll mandrel and roll sleeve.
For the ease of processing and installation, joint housing 2 also is provided with joint base 1 at an end that contains filler opening 21, in order to reduce volume, take full advantage of the space of joint base, joint base 1 is provided with bottom tub 101, filler opening 21 is arranged on the bottom 102 of bottom tub, and check valve is arranged in the bottom tub 101, such as Fig. 2, Fig. 3.
Check valve has the check valve seat 20 that is connected with joint housing 2, the check valve core 18 that filler opening 21 can be sealed, the check spring 19 that is connected check valve seat 20 and check valve core 18, and check valve seat 20 is provided with the valve seat oil guiding hole 201 that is connected with filler opening 21.Accurately with filler opening 21 sealings, can also reduce high pressure oil leaks into roll mandrel 4 from joint base 1 outside, such as Fig. 2, Fig. 4 when the check valve seat being set not only can guaranteeing check valve core 18 resilience.
Check valve seat 20 is formed with the valve seat groove 202 of indent, and valve seat oil guiding hole 201 is arranged on the bottom of valve seat groove 202; Check valve core 18 comprises spool head 181 and valve rod 182, and valve rod 182 is arranged in the valve seat groove 202, and spool head 181 is positioned at the outside of valve seat groove 202 opening ends, and the closed end 183 at its top is complementary with the shape of filler opening 21, and can be embedded in the filler opening 21.Preferred closed end 183 is conical or truncated cone, and the shape of filler opening 21 also is conical or truncated cone.The shape of the shape of closed end 183 and filler opening 21 be complementary can be when the roll draining reduce pressure release speed, such as Fig. 2, Fig. 5.
Be provided with joint oil duct 91 in the joint mandrel 9, be provided with seal disc 14 between joint mandrel 9 and the joint base 1, be provided with the seal disc oil duct 141 that is communicated with filler opening 21 and joint oil duct 91 in the seal disc 14.Close contact between preferred seal disc 14 and the joint base 1 is connected with pressure compensation spring 13 between seal disc 14 and the joint mandrel 9, such as Fig. 2, Fig. 6, Fig. 7.
Be provided with lubricant oil district 23 between joint housing 2 and the joint mandrel 9, the arranged outside of joint mandrel 9 has lubricant oil filler opening 92, be provided with the lubricant oil oil input channel 94 that is communicated with lubricant oil district 23 and lubricant oil filler opening 92 in the joint mandrel 9, the outside of joint mandrel 9 also is provided with lubricant oil oil outlet 93, also be provided with the lubricant oil oil road 95 that is communicated with lubricant oil district 23 and lubricant oil oil outlet 93 in the joint mandrel 9, such as Fig. 2, Fig. 6.Because the rotational speed of chicksan 43 is higher, so be provided with 2 row deep groove ball bearings 3 between joint mandrel 9 and the joint housing 2, on the joint mandrel, also be designed with lubricant oil filler opening 92 and lubricant oil oil outlet 93, lubricant oil enters lubricant oil district 23 from lubricant oil filler opening 92 and lubricant oil oil input channel 94, and then through lubricant oil oil road 95 and 93 discharges of lubricant oil oil outlet, the cooling that is used for deep groove ball bearing 3 reaches lubricated.
In addition, joint housing 2 is installed with roll mandrel 4 transition fit and is connected firmly with the end face of swivel joint fastening screw trip bolt 11 with bulging roll mandrel 4; Joint base 1 installs and installs additional the low pressure lubricant oil that twice viton seal ring 8 is used for sealing lubricating oil district 23 with joint housing 2 Spielpassung, joint base 1 is connected with joint housing 2 usefulness screws 15; Joint base 1 installs the viton seal ring 8 of radial seal additional with the viton seal ring 8 of axial end sealing with 4 of roll mandrels, is used for sealed high pressure oil.Check valve seat 20 is provided with outside thread, the joint base 2 interior internal threads that arrange, for convenient check valve seat 20 is tightened in the joint base 2, the outer end of check valve seat 20 also is provided with two mounting holes 204, two mounting holes 204 of the corresponding insertion of mounting bar with setting tool, just can rotate very easily check valve seat 20 by the turn setting tool, such as Fig. 4.6 of joint mandrel 9 and joint end caps are to seal movingly, so adopted double-channel sealing structure, are used for sealing lubricating oil district 23, and first adopts bulging fluorine rubber seal element 7, and second adopts plain cylindrical form viton seal ring 8, such as Fig. 2.
The below introduces the method for operation of anti-backflow chicksan of the present invention.See Fig. 2, in when work, except joint mandrel 9 and upper seal disc 14, the pressure installed of cooperating thereof replenish spring 13, the bearing spacer 5, all the other all parts are along with roll mandrel 4 rotates together.
The outer end of joint mandrel 9 is provided with high pressure oil-feed duct 96, under the normal working, hydraulic system makes high pressure oil enter and flow through successively from high pressure oil-feed duct 96 joint oil duct 91 and seal disc oil duct 141 rear arrival filler openings 21, then promoting check valve core 18 moves from right to left, high pressure oil is from flowing into the through hole 187 of flowing through successively behind the store oil space 103 between check valve core 18 and the seat filler opening 21, runner 185, enter roll oil duct 22, and then enter high-voltage oil cavity 45 and act on roll mandrel 4 and roll sleeve 41, according to different plate shape control control requirements, hydraulic system provides different hydraulic pressures, make roll sleeve 41 produce different distortion convexitys, thereby reach the requirement of control strip shape quality.When the hydraulic system cut in the high-voltage oil cavity during fuel feeding, filler opening 21 place's pressure reduce suddenly check valve core 18 and move from left to right under the effect of check spring 19 filler opening 21 sealings, then high pressure oil can slowly flow out from the slit between check valve core 18 and the filler opening 21, pressure in the high-voltage oil cavity reduces gradually, roll axle sleeve and the suffered pressure of roll mandrel slowly reduce, thus roll sleeve and the damage of roll mandrel of having avoided quick pressure releasing to cause.
The above only is specific embodiments of the invention, can not limit the scope that invention is implemented with it, thus the displacement of its equivalent assemblies, or according to equivalent variations and modification that scope of patent protection of the present invention is done, all should still belong to the category that this patent is contained.
Claims (10)
1. anti-backflow chicksan, it is characterized in that: comprise joint housing (2), one end of joint housing (2) can be arranged on the joint mandrel (9) rotationally, the other end of joint housing (2) is provided with filler opening (21), and the other end of joint housing (2) also is fixedly connected with the check valve that can seal filler opening (21).
2. joint according to claim 1, it is characterized in that: joint housing (2) also is provided with joint base (1) at an end that contains filler opening (21), joint base (1) is provided with bottom tub (101), filler opening (21) is arranged on the bottom (102) of bottom tub, and check valve is arranged in the bottom tub (101).
3. joint according to claim 2, it is characterized in that: check valve has the check valve seat (20) that is connected with joint housing (2), the check valve core (18) that filler opening (21) can be sealed, the check spring (19) that is connected check valve seat (20) and check valve core (18), and check valve seat (20) is provided with the valve seat oil guiding hole (201) that is connected with filler opening (21).
4. joint according to claim 3, it is characterized in that: check valve seat (20) is formed with the valve seat groove (202) of indent, and valve seat oil guiding hole (201) is arranged on the bottom of valve seat groove (202); Check valve core (18) comprises spool head (181) and valve rod (182), valve rod (182) is arranged in the valve seat groove (202), spool head (181) is positioned at the outside of valve seat groove (202) end, the closed end at its top (183) is complementary with the shape of filler opening (21), and can be embedded in the filler opening (21).
5. joint according to claim 4 is characterized in that: bossed annulus (184) is set on the valve rod (182), and the annulus of this projection (184) is contained in the valve seat groove (202); Bottom (203) butt of one end of check spring (19) and valve seat groove, annulus (184) butt of the other end of check spring (19) and projection.
6. joint according to claim 5, it is characterized in that: valve rod (182) is for having the hollow article of runner (185), form store oil space (103) between the bottom of bottom tub (102) and the check valve seat (20), be provided with the through hole (187) that is communicated with runner (185) and store oil space (103) between the closed end (183) of the annulus (184) of projection and spool, valve rod (182) is plugged in valve seat oil guiding hole (201).
7. joint according to claim 5, it is characterized in that: the external diameter of the annulus of projection (184) equals the internal diameter of valve seat groove (202).
8. joint according to claim 2, it is characterized in that: be provided with joint oil duct (91) in the joint mandrel (9), be provided with seal disc (14) between joint mandrel (9) and the joint base (1), be provided with the seal disc oil duct (141) that is communicated with filler opening (21) and joint oil duct (91) in the seal disc (14).
9. joint according to claim 8, it is characterized in that: close contact between seal disc (14) and the joint base (1) is connected with pressure compensation spring (13) between seal disc (14) and the joint mandrel (9).
10. joint according to claim 8, it is characterized in that: be provided with lubricant oil district (23) between joint housing (2) and the joint mandrel (9), the arranged outside of joint mandrel (9) has lubricant oil filler opening (92), be provided with the lubricant oil oil input channel (94) that is communicated with lubricant oil district (23) and lubricant oil filler opening (92) in the joint mandrel (9), the outside of joint mandrel (9) also is provided with lubricant oil oil outlet (93), also is provided with the lubricant oil oil road (95) that is communicated with lubricant oil district (23) and lubricant oil oil outlet (93) in the joint mandrel (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210376543.4A CN102913702B (en) | 2012-09-29 | 2012-09-29 | High pressure rotating joint capable of preventing backflowing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210376543.4A CN102913702B (en) | 2012-09-29 | 2012-09-29 | High pressure rotating joint capable of preventing backflowing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102913702A true CN102913702A (en) | 2013-02-06 |
| CN102913702B CN102913702B (en) | 2014-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210376543.4A Active CN102913702B (en) | 2012-09-29 | 2012-09-29 | High pressure rotating joint capable of preventing backflowing |
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| Country | Link |
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| CN (1) | CN102913702B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0599383A (en) * | 1991-10-08 | 1993-04-20 | Ritsukusu Kk | Oil feeding rotary joint |
| DE19757882C1 (en) * | 1997-12-24 | 1999-09-30 | Gat Gmbh | Rotary fluid passage for coolant feed in machine tool |
| CN101711323A (en) * | 2007-03-22 | 2010-05-19 | 日东工器株式会社 | Pipe joint member for high-pressure fluid |
| CN102337839A (en) * | 2011-09-06 | 2012-02-01 | 中国石油化工股份有限公司 | Directionally rotating type air hammer |
| CN202791050U (en) * | 2012-09-29 | 2013-03-13 | 中冶京诚工程技术有限公司 | Anti-backflow high pressure rotating connector |
-
2012
- 2012-09-29 CN CN201210376543.4A patent/CN102913702B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0599383A (en) * | 1991-10-08 | 1993-04-20 | Ritsukusu Kk | Oil feeding rotary joint |
| DE19757882C1 (en) * | 1997-12-24 | 1999-09-30 | Gat Gmbh | Rotary fluid passage for coolant feed in machine tool |
| CN101711323A (en) * | 2007-03-22 | 2010-05-19 | 日东工器株式会社 | Pipe joint member for high-pressure fluid |
| CN102337839A (en) * | 2011-09-06 | 2012-02-01 | 中国石油化工股份有限公司 | Directionally rotating type air hammer |
| CN202791050U (en) * | 2012-09-29 | 2013-03-13 | 中冶京诚工程技术有限公司 | Anti-backflow high pressure rotating connector |
Non-Patent Citations (1)
| Title |
|---|
| 严量力译: "布洛·诺克斯公司的轧辊凸度调整系统", 《轻合金加工技术》 * |
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| CN102913702B (en) | 2014-08-13 |
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