CN205298149U - High -speed rotary distributor of mechanical seal that floats - Google Patents
High -speed rotary distributor of mechanical seal that floats Download PDFInfo
- Publication number
- CN205298149U CN205298149U CN201620044415.3U CN201620044415U CN205298149U CN 205298149 U CN205298149 U CN 205298149U CN 201620044415 U CN201620044415 U CN 201620044415U CN 205298149 U CN205298149 U CN 205298149U
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- China
- Prior art keywords
- floating
- mandrel
- shell
- rotary sleeve
- oil
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- 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.)
- Withdrawn - After Issue
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Abstract
The utility model relates to a high -speed rotary distributor of mechanical seal that floats, coaxial arrangement are on the pneumatic cylinder, and mechanical seal is installed to the outer coaxial suit of dabber between this rotary sleeve and the dabber, the rotary sleeve overcoat has the shell, installs two unsteady mechanical seal subassemblies of mirror symmetry between this shell and the rotary sleeve, and the oil duct of dabber communicates with the unsteady oil duct that the oil inlet of shell was made through the mechanical seal subassembly that floats. Unsteady mechanical seal subassembly has been installed to this distributor between the installation cover of the rotary sleeve of dabber and shell, this mechanical seal passes through the dabber cover, outer shell and the cooperation of floating and overlapping, unsteady cover can realize effectively that the balanced of oil pressure flows, it is can the volume of ensureing the clearance equal completely, clearance oil pressure balanced, realize zero friction static pressure oil film seal, rotary sleeve diameter runout has been solved in the perfection, hydraulic oil pressure imbalance therefore hardly produce oil film seal's problem in the clearance, the contact of direct NOT AND plane of rotation has been avoided, wearing and tearing, the dead technological problem of card.
Description
Technical field
This utility model belongs to field of metallurgy, relates to allotter, especially a kind of floating mechanical sealing high speed rotating allotter.
Background technology
High speed rotating allotter is mainly used in metallurgy industry hot-rolled and cold-rolled coiling machine, combines with harmomegathus hydraulic cylinder, its general pressure 210bar, rotating speed 1000-2500rpm/min. High speed rotating allotter relies on clearance seal, gap between tumbler and fixture is not more than 20 microns, within the scope of internal diameter 80-100 millimeter, and deep groove ball bearing end-play is at 20 microns, being cased with circular runout so rotating in the course of the work, making hydraulic fluid pressure in gap unequal, it is difficult to produce oil film seal, even directly contact with nonrotational face, abrasion, stuck.
By the retrieval of patent document, not yet find the patent document relevant to this utility model application.
Utility model content
The purpose of this utility model is in that to overcome the deficiencies in the prior art, it is provided that a kind of floating mechanical sealing high speed rotating allotter realizing contactless rotation.
The purpose of this utility model is achieved through the following technical solutions:
A kind of floating mechanical sealing high speed rotating allotter, it is coaxially mounted on hydraulic cylinder, including mandrel, rotary sleeve, floating mechanical sealing assembly, bearing, installation set, shell and end cap, the outer coaxial package of mandrel, between this rotary sleeve and mandrel, mechanical seal is installed; Being cased with shell outside rotary sleeve, be provided with two floating mechanical sealing assemblies of specular between this shell and rotary sleeve, rotary sleeve and shell are by bearing relative motion therebetween; Being shaped with oil-in and oil leak hole on shell, be shaped with the main oil gallery connected with hydraulic cylinder in mandrel, the oil duct of mandrel is connected by the floating oil duct that floating mechanical sealing assembly is made with the oil-in of shell.
And, the structure of described floating mechanical sealing assembly is: this assembly includes: the left set of mandrel being tightly connected with the rotary sleeve of mandrel overcoat and fixing each other by connecting bolt, the right set of mandrel, the casing being tightly connected and fixing each other by connecting bolt is overlapped with installing of shell inner sleeve, floating bushing, the left set of mandrel connects with the radially inner and outer gap of casing and its right side flushes, floating bushing is inlaid in the right set of mandrel, and leave flying height with the right set of mandrel, floating oil duct is axially made in casing, and in floating bushing, form taper, axially turn back at the left set of mandrel again and connect main oil gallery straight down.
And, about described mandrel, set and casing, floating bushing relatively rotate, and gap therebetween is 0.01mm;The pressure of floating oil duct made in floating bushing, equal to the pressure from the supply of shell oil-in, promotes casing and floating bushing to move right, and thus medium enters flying height, the annulus area of the flying height floating oil duct equal to 2 times.
Advantage of the present utility model and having the benefit effect that
1, present dispenser is mounted with floating mechanical sealing assembly between the rotary sleeve and the installation set of shell of mandrel, core sleeve is passed through in this mechanical seal, the cooperation of casing and floating bushing, floating bushing can effectively realize the balanced flowing of oil pressure, may insure that gap value is essentially equal, gap oil pressure balance, realize sealing without friction static pressure oil film, perfection solves rotary sleeve circular runout, in gap, hydraulic fluid pressure is unequal thus the problem of very difficult generation oil film seal, avoid direct and nonrotational face to contact, abrasion, stuck technical barrier, it it is the technical products that a novelty is higher.
2, this rotary distributor can realize contactless rotation, and mechanical seal is enclosed within the mandrel in rotary sleeve, and the sealing between mandrel and rotary sleeve is composite rotatory sealing; When this machinery rotatory sealing was lost efficacy, can rotating between machinery rotatory sealing and mandrel, composite rotatory sealing plays safety effect, and coordinating between machinery rotatory sealing and shell is also realized by composite rotatory sealing with sealing, after mechanical seal cooling, work on.
Accompanying drawing explanation
Fig. 1 is structure sectional view of the present utility model;
Fig. 2 is the A portion structure enlarged diagram of Fig. 1;
Fig. 3 is the B portion structure enlarged diagram of Fig. 2.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment of the present utility model is further described; The present embodiment is illustrative, is not determinate, it is impossible to thus limit protection domain of the present utility model.
A kind of floating mechanical sealing high speed rotating allotter, it is coaxially mounted on hydraulic cylinder 1, including mandrel 2, rotary sleeve 6, floating mechanical sealing assembly, bearing 4, set 7, shell 8 and end cap 9 are installed, the outer coaxial package of mandrel, between this rotary sleeve and mandrel, sealing member is installed; Being cased with shell outside rotary sleeve, be provided with two floating mechanical sealing assemblies of specular between this shell and rotary sleeve, rotary sleeve and shell are by bearing relative motion therebetween; Being shaped with oil-in 5 and oil leak hole 3 on shell, be shaped with the main oil gallery 10 connected with hydraulic cylinder in mandrel, the oil duct of mandrel is connected by the floating oil duct 13 that floating mechanical sealing assembly is made with the oil-in of shell.
The structure of described floating mechanical sealing assembly is:
This assembly includes: the left set 18 of mandrel being tightly connected with the rotary sleeve of mandrel overcoat and fixing each other by connecting bolt 11, the right set 16 of mandrel, the casing 14 being tightly connected and fixing each other by connecting bolt 12 is overlapped with installing of shell inner sleeve, floating bushing 15, the left set of mandrel connects with the radially inner and outer gap of casing and its right side flushes, floating bushing is inlaid in the right set of mandrel, and leave flying height 17 with the right set of mandrel, floating oil duct is axially made in casing, and in floating bushing, form taper, axially turn back at the left set of mandrel again and connect main oil gallery straight down.
In the present embodiment, the operation principle of floating mechanical sealing is:
Referring to Fig. 3, about mandrel, set and casing, floating bushing relatively rotate, and gap therebetween is approximately 0.01mm; The pressure in b chamber approximates the pressure from the supply of shell oil-in, promotes casing and floating bushing to move right, and thus medium enters c chamber, and the annulus area floated in c chamber approximates 2 times of b chambeies.When c cavity pressure is b cavity pressure two/for the moment, casing, floating bushing will be promoted to left movement. Therefore, b cavity pressure is equilibrated at the half of outside charge oil pressure by pressure medium automatically. It is equal for flowing through gap a with the flow of flow path gap d, and flow path gap a is also equal with the pressure reduction of flow path gap d; When meeting Ld/La=Rd/Ra, equal with gap d in the size of equilibrium point gap a, i.e. Ha=Hd. This mechanical seal may insure that gap value is essentially equal, gap oil pressure balance, it is achieved seals without friction static pressure oil film. ;
This rotary distributor can realize contactless rotation, and mechanical seal is enclosed within the mandrel in rotary sleeve, and the sealing between mandrel and rotary sleeve is composite rotatory sealing; When this machinery rotatory sealing was lost efficacy, can rotating between machinery rotatory sealing and mandrel, composite rotatory sealing plays safety effect, and coordinating between machinery rotatory sealing and shell is also realized by composite rotatory sealing with sealing, after mechanical seal cooling, work on.
Claims (3)
1. a floating mechanical sealing high speed rotating allotter, it is coaxially mounted on hydraulic cylinder, it is characterized in that: include mandrel, rotary sleeve, floating mechanical sealing assembly, bearing, installation set, shell and end cap that the outer coaxial package of mandrel is provided with mechanical seal between this rotary sleeve and mandrel; Being cased with shell outside rotary sleeve, be provided with two floating mechanical sealing assemblies of specular between this shell and rotary sleeve, rotary sleeve and shell are by bearing relative motion therebetween; Being shaped with oil-in and oil leak hole on shell, be shaped with the main oil gallery connected with hydraulic cylinder in mandrel, the oil duct of mandrel is connected by the floating oil duct that floating mechanical sealing assembly is made with the oil-in of shell.
2. floating mechanical sealing high speed rotating allotter according to claim 1, it is characterized in that: the structure of described floating mechanical sealing assembly is: this assembly includes: the left set of mandrel being tightly connected with the rotary sleeve of mandrel overcoat and fixing each other by connecting bolt, the right set of mandrel, the casing being tightly connected and fixing each other by connecting bolt is overlapped with installing of shell inner sleeve, floating bushing, the left set of mandrel connects with the radially inner and outer gap of casing and its right side flushes, floating bushing is inlaid in the right set of mandrel, and leave flying height with the right set of mandrel, floating oil duct is axially made in casing, and in floating bushing, form taper, axially turn back at the left set of mandrel again and connect main oil gallery straight down.
3. floating mechanical sealing high speed rotating allotter according to claim 2, it is characterised in that: about described mandrel, set and casing, floating bushing relatively rotate, and gap therebetween is 0.01mm; The pressure of floating oil duct made in floating bushing, equal to the pressure from the supply of shell oil-in, promotes casing and floating bushing to move right, and thus medium enters flying height, the annulus area of the flying height floating oil duct equal to 2 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620044415.3U CN205298149U (en) | 2016-01-18 | 2016-01-18 | High -speed rotary distributor of mechanical seal that floats |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620044415.3U CN205298149U (en) | 2016-01-18 | 2016-01-18 | High -speed rotary distributor of mechanical seal that floats |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205298149U true CN205298149U (en) | 2016-06-08 |
Family
ID=56428542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620044415.3U Withdrawn - After Issue CN205298149U (en) | 2016-01-18 | 2016-01-18 | High -speed rotary distributor of mechanical seal that floats |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205298149U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465105A (en) * | 2016-01-18 | 2016-04-06 | 天津市四方欧业液压技术有限公司 | High-speed rotating distributor with floating mechanical seal |
-
2016
- 2016-01-18 CN CN201620044415.3U patent/CN205298149U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465105A (en) * | 2016-01-18 | 2016-04-06 | 天津市四方欧业液压技术有限公司 | High-speed rotating distributor with floating mechanical seal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160608 Effective date of abandoning: 20170609 |