CN1010958B - Controlled deflection roll and the press method - Google Patents
Controlled deflection roll and the press methodInfo
- Publication number
- CN1010958B CN1010958B CN 85104692 CN85104692A CN1010958B CN 1010958 B CN1010958 B CN 1010958B CN 85104692 CN85104692 CN 85104692 CN 85104692 A CN85104692 A CN 85104692A CN 1010958 B CN1010958 B CN 1010958B
- Authority
- CN
- China
- Prior art keywords
- pressure chamber
- pressure
- roller shell
- seal
- axle
- 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.)
- Expired
Links
Images
Abstract
The present invention relates to a controllable deflection roll which comprises a tubular rotary roll shell arranged on a fixed shaft, wherein the fixed shaft penetrates through the roll shell which is supported by the shaft; the shaft supporting the roll shell is in pressurizing contact with the working surface and opposite components of the roll shell to form pressing operation; a pressure chamber between the shaft and the roll shell is pressurized by fluid introduced by a sealing element between the shaft and the roll shell. When the fluid is introduced, the pressure chamber releases pressure through the front side of the pressure chamber (for example, the sealing element is made into a special shape, such as a back edge flange) in order to maintain predetermined pressure.
Description
The improvement of the relevant a kind of Controlled deflection roll and the press method of the present invention, such deflection roll and the press method has a pressure roll shell, is installed in rotation on the fixing axle, by the hydraulic cavities support between roller shell and the axle, the roller shell is under the support of hydraulic cavities, and its operating pressure is delivered on the axle by hydraulic fluid.
Particularly, the structure of the hydraulic cavities pressurization between relevant roller shell of the present invention and the axle and the improvement of method.Up to now, such structure example as announced among the 2nd, 908, No. 964 Appenzeller of (U.S.) patent case with and one by one modification in, the pressurization of the pressure chamber between roller shell and the axle all is will go in the liquid pushing inlet pressure chamber such as oils with one.According to the design of such roller, the roller shell contacts with another roller, forms a nip along working face.Oil with pump pressure is sent to the pressurization of the chamber between axle and the roller shell, makes nip keep straight substantially, because the pressure of nip is by pressing oil, be communicated to from the roller shell that axle gets on, so axle can be crooked, but the roller shell only is subjected to the pressure of hydraulic fluid, thereby can keep straight substantially.
U.S. Pat 3.611,529 discloses the another kind of existing apparatus that seals a pressure chamber in Controlled deflection roll and the press method.In this patent, a gas-flow closure spare is housed in the succeeding vat that forms on the stationary roller shaft surface.Be inflated in the sealing part, make it to expand and press the inner surface of roller shell, fluid is enclosed in the chamber that forms between roller shell inner surface, gas-flow closure spare and roll shaft.The expansion surface of seal is symmetroid, provides sealed engagement between roller shell and axle.Pressure in the seal can change, and realization seals or have the leakage of control fully to chamber, and this is decided in its sole discretion by the operator.
This class formation requires to have the oil pump of accurate controlling organization, the pressurization in controlled pressure chamber.And when starting just, just require that pressure is arranged in the pressure chamber, prevent that the inner surface of roller shell from being denuded or abrading by axle, and the pressure in the pressure chamber, must keep predetermined pressure by the required nip pressure of squeezing operation.Therefore, be provided with seal and prevent pressure leakage, unique effect of seal is set in the past so Here it is.If hydraulic fluid leaks from seal, just need carry and press oil to compensate to pressure chamber.Because the pressure in the nip is decided by the pressure in the pressure chamber fully, so accurately controlled pressure and oil pump can not run into the mistake in the running, for example pump pulsing error or fault etc.And pump must have enough energy, the leakage of compensation sealing, and when under the maximum nip pressure condition, operating, can have enough liquid to replenish.Because usually require roller to do the running of both direction, so design of rubber seal must can adapt to both direction, and seal degree does not have to change substantially.
The objective of the invention is to propose a kind of improved Controlled deflection roll and the press method, it does not need controlled force (forcing) pump to come the pressure chamber in the controllable pressure roller is pressurizeed.
The another one purpose of invention, be to propose a kind of improved method and apparatus, thereby make pressure roll liquid feeding and pressurization voluntarily voluntarily, so the operating pressure in the pressure chamber provides automatically with the rotation of pressure roll, the running of force (forcing) pump needn't be coordinated with the pressure in running speed and the roller shell.
A general purpose of the present invention, be to propose a kind of improved roller shell structure, can keep the pressure of nip more even, it is more reliable to turn round, prevent when device fails, pair roller shell and axle cause unexpected failure, and improve to some extent than structure and method in the past, and the running over a long time that makes the roller shell do to continue.
The present invention proposes a kind of Controlled deflection roll and the press method and pressure method thereof, include a roller shell that is placed on the fixed axis, pressure chamber backing roll shell is arranged between axle and roller shell, pressure chamber in the shell is by pressing the oil pressurization, because the motion of the relative seal of roller shell inner surface makes and presses oil to pass through seal in the front side of pressure chamber, and relief passage is set again, remove too high pressure in the chamber, and the pressure of constant needs is arranged in the holding chamber.
The present invention also provides a kind of improvement seal of Controlled deflection roll and the press method, makes the roller can self-excitation, to exempt in order to produce the pump of lubricating oil pressure.And this structure can reduce parts, than the equipment in the prior art field higher cost benefit ratio is arranged, and in the present invention, seal can make lubricating oil pressure all produce in two direction of rotation.
About other purpose of the present invention, advantage and characteristics are used this specification, and claims and accompanying drawing are done following the argumentation to principle of the present invention, just can separate and say clearly.Accompanying drawing thes contents are as follows:
Fig. 1 is according to the Controlled deflection roll and the press method of principle manufacturing of the present invention and the running cutaway view along its center line intercepting.
Fig. 2 is the basic vertical view that II-the II line is watched along Fig. 1,
Its central roll shell is removed.
Fig. 3 is the basic vertical sectional view that III-the III line is done along Fig. 1.
Fig. 4 is the amplification detail view of the seal among Fig. 3.
Fig. 5 is that the seal of another form amplifies detailed cross sectional view.
Fig. 6 is that the seal of another form amplifies detailed cross sectional view.
Fig. 1 represents that material makes the side sectional view of a roller spare of pressurized treatments.Particularly, this roller spare utmost point is applicable to paper industry, and in paper industry, paper web will make the paper web dehydration through a series of press operation.In order to make paper web evenly dehydration on whole width substantially, make the roller shell that an axial straight nip can be provided, and to make nip pressure consistent on whole width be very important.In order to reach this purpose, in the art the someone various forms of roller spares were proposed, can be called Controlled deflection roll and the press method.
As shown in Figure 1, Controlled deflection roll and the press method comprises a cylindrical or tubular roller shell 10, and a smooth exterior surface face is arranged, can be in order to along working face 11 and an opposite power effect.Therefore, this roller often is used to cooperate with another roller, forms a roller and pays.The nip that forms between two roller spares is accepted paper web and woollen blanket together, absorbs the moisture that extrudes.Under suitable nip pressure, the roller shell will trend towards along its curved in length, cause disadvantageous arch nip, and owing to the bending of roller spare brings useless power.The bending of roller spare causes the pressure of paper web unequal inhomogeneous with dehydration.With a kind of fluid support roller shell, the hydraulic fluid of handy oil and so on, the roller shell only contacts hydraulic fluid along its working surface 11, transmits a uniform power inwards, so the roller shell can be crooked, and the nip line is straight substantially.Be delivered to the power in the fluid, be delivered to again on the fixed axis 12 that in the roller shell, stretches.The arrangement of axle is to leave the space between axle and roller shell inner surface 20.There is a pressure chamber 16 in the place relative with roller shell working surface 11 in this space.Hydraulic fluid in the pressure chamber is by the seal on the axle 18 interception, and mode is that seal is embedded in 19 li of grooves on the axle.The design of seal, its structure and with respect to the roller shell and the axle the position all be unique, a kind of structure of self-excitation is arranged.In this structure, oily stream is directed on the inner surface of roller shell, pressure chamber 16 is pressurizeed automatically, the compressed oil stream of introducing keeps it in pressure chamber 16 constant compression force to be arranged by a relief passage 26.
Such as being installed in suitable frame 13 first-class modes, make axle 12 usefulness it fixing in rotatable roll shell.At the two ends of roller shell bearing 14 is arranged, keep the rotatable situation of roller shell.The roller shell has end cap, on dust seal 15 protection bearings are arranged.Can the pair roller shell drive, make it rotation, also can make it with the band (web) of material, or be driven to rotate during the contact of relative roller.
As illustrated in fig. 1 and 2, the groove 19 that seal 18 embeds has special shape, thereby when working face 11 positions are watched, the shape of an ellipse is arranged.Embed the cell wall 19a of the groove of seal, on the axial medium position of axle, extend to the central point radially of axle basically.On this position, the relative downward bias side of axle can not change the spacing between axle and the roller shell inner surface 20.At the two-end-point 19b place (Fig. 2) of groove, the spacing slight change, and seal has this small variation of enough elastic compensatings.Basically groove has certain shape, progressively recessed inwards from the end of axle to the middle part, the amount of bow of axle increases with respect to the roller shell, oval-shaped groove moves closer to towards the radial center point of axle, thereby on the position at seal place, the spacing variation between axle and the roller shell can remain in the predetermined bottom line.
With reference to Fig. 1,, the pressure of 16 li of pressure chambers is remained in the predetermined level by decompression control.Because lubricating fluid was with from seal, pressure chamber is pressurized forever, so pressure chamber is subjected to constant supply and keep-ups pressure.For the pressure oil of releasing too much, relief passage 26 has a 26a of first, have with axle on the boring that communicates of pressure chamber 16.The second portion 26b of relief passage extends axially (not shown) in the oil groove of the tip of the axis from the 26a of first.What link to each other with passage has a controllable pressure relief valve 27, and this valve regulates being decompressed to predetermined value according to the size of the working surface 11 desired power of pair roller shell.
Fig. 3 represents the relativeness of central shaft 12 and roller shell inner surface 20.Seal 18 has special shape continuously, and Fig. 4 illustrates more detailed details.Seal 18 is embedded in the groove 19, and the bottom 18a that stretches downwards with respect to roller shell working surface 11 is arranged.Seal 18 has one first prominent lip 18b to stretch out resilient abutment roller shell inner surface 20 from above.The roller shell can rotate to both direction, and the prominent lip 18b with respect to the forward position side of roller coiling direction at pressure chamber 16 will take place sagging.Like this, taken to the pressure oil of 17 li of not pressurised zones between axle and the roller shell downwards; Under pump function, be conducted through seal and to pressure chamber 16 pressurization.Frictional force between the smooth inner surface 20 of pressure oil and roller shell is under continuous pump function, pressing oil to send from seal.In the downstream of pressure chamber, the corresponding prominent lip of seal 18b constitutes sealing, stops oil to be overflowed.
Seal has in second the bottom of prominent lip 18c against groove 19, and seal is outwards pushed to the roller shell.Between prominent lip 18b and the 18c, the press strip 18e of an integral body is arranged, prominent lip is pushed to the direction that stretches.
The seal that another kind of form is arranged, as shown in Figure 5, seal 18 ' be embedded in the groove 19.Seal among Fig. 5 has a bottom 22, is embedded in the groove, the back is arranged along prominent lip portion 21, leans against on the inner surface 20 of roller shell to slide.The structure of prominent lip portion is sagging in pressure chamber forward position side, thereby pressure oil pump is pressed, and enters pressure chamber through seal.At the place, downstream, prominent lip will stretch along the direction of pressure chamber, thereby produces the effect of sealing, stops and presses oil to overflow.
In structure shown in Figure 6, seal 18 is set ", its bottom is 25, two backs are 23 and 24 along prominent lip.The effect of the seal shown in Fig. 6, shown in Figure 5 identical of fundamental sum, but in the efficient higher sealing of two prominent lip in the downstream of pressure chamber.
As shown in figs. 1 and 3, pad 28 is set in the end of axle, when the live load on working face 11 suddenly disappears, prevents the abrasion between roller shell and the axle.
An oil supply source is arranged, and by a supply line 29 oil reservoir of coating on the inner surface of roller shell continuously, supply line 29 to stretching, extension, feeds not pressurizing chamber 17 from the end axis of axle then diametrically.The too much oil that the chamber is 17 li is drained by the return line 30 that links to each other with it, therebetween through a radial component, with an axial component that in axle, passes, and a circulation pump is arranged, continuously oil from pipeline 29, by space 17, discharge from pipeline 30 again, to circulate.The oil of recirculation can add cooling, uses axle and roller shell are played cooling effect.In addition, if plan to make the roller shell under predetermined temperature, to turn round, the oil of supplying with by pipeline 29 can be remained under the above-mentioned predetermined temperature, with the operating temperature that needing to keep.For this purpose, on supply line, can increase an oil treater 31.31 transfer pump of simple expression and oil treaters.
During running the roller shell is rotated to start this mechanism.Like this will be immediately oil below axle 12 not pressurizing chamber 17 upwards draw, this part oil will be by pump pressure, from the forward position side of pressure chamber 16, by seal 18.If roller rotates in the direction of the clock, just oil be pumped, by the left side seal of Fig. 3, if roller by rotation counterclockwise, just oil be pumped, by the seal on right side among the figure.So pressure chamber 16 will be along its whole length pressurization, because seal 18 has half to be in pressure chamber 16 forward position sides with respect to roller shell 10 direction of rotation.Correspondingly, second half of seal 18 will be in the downstream, and an effective seal will be provided, and stop oil to be overflowed from pressure chamber 16.To regulate according to the nip pressure that roller shell working surface 11 requires pressure-reducing valve 27, with the predetermined pressure in the chamber 16 that keep-ups pressure.
Obviously when high speed, more oil pump pushing inlet pressure chamber will be arranged, but this does not influence the controlled pressure that pressure-reducing valve 27 is kept.Have been found that this structure can carry enough compressed oils to pressure chamber, it is turned round under the maximum nip pressure of needs, and do not need other pressure fluid, also do not need to be provided with other for the source for the source.
Therefore, proposed a kind of structure and method of operating of improved Controlled deflection roll and the press method as can be seen in person, can use the shortcoming of avoiding in the existing skill field, and satisfy target proposed above and advantage.The workpiece that some needs can be save as force (forcing) pump, just and can guarantee roller spare supercharging voluntarily immediately after starting.Because the appropriate configuration of seal, lubricating oil pressure can all produce on two direction of rotation, and by being controlled by the annular seal space draining, can make pressure even.The parts that this structure is used are few, than existing equipment higher cost benefit ratio arranged.
Claims (9)
1, a kind of Controlled deflection roll and the press method comprises
A rotating tubular roller shell, its outer surface is done the pressure contact along a working face, to squeeze operation;
A fixed axis that passes the roller shell, its two ends are supported, and are surrounded with the roller shell above the axle, between the working face district of roller shell and axle, form a pressure chamber, power is delivered on the axle from the roller shell, and utilizes fluid pressure backing roll shell in the pressure chamber, a continuous groove is arranged on the axle;
Seal in groove that is placed on the axle, the sealing part is between axle and roller shell, to keep the pressure in the pressure chamber;
It is characterized in that:
Described seal has the bottom and the prominent lip that stretches out in pressure chamber forward position side that embed in the groove of axle, the inner surface of prominent lip and roller shell forms sliding-contact, and sagging along the direction generation of roller rotation, so that make fluid pass seal pressure chamber is pressurizeed
It is oval-shaped route that described seal is extended into that a working surface from the roller shell looks, and at the axial middle section position of axle, oval-shaped both sides extend to the central point radially of axle basically.
2, Controlled deflection roll and the press method according to claim 1, it is characterized in that between axle and roller shell, first and second seals being arranged, at least one of above-mentioned seal, on the side of the above-mentioned forward position of pressure chamber, a prominent lip is arranged, become sealing to contact with the inner surface of roller shell, and sagging along the direction generation of roller rotation, so that passing seal, fluid enters pressure chamber.
3, Controlled deflection roll and the press method according to claim 2 is characterized in that above-mentioned two seals all have a prominent lip, and is sagging on roller shell inner surface movement direction, and prominent lip is positioned at the forward position side of pressure chamber.
4, Controlled deflection roll and the press method as claimed in claim 1 is characterized in that above-mentioned seal centers on whole length of above-mentioned pressure chamber at it, has uniform shape, it is made with lip, so that when the roller shell rotates on both direction, can pass through seal by guided liquid-flow, enter pressure chamber.
5, Controlled deflection roll and the press method as claimed in claim 1 is characterized in that the operation of fluid being introduced pressure chamber that above-mentioned seal carries out, and is the unique pressure source of pressure chamber pressurization.
6, Controlled deflection roll and the press method as claimed in claim 1 is characterized in that wherein having a relief passage, extends in axle and the connection of above-mentioned pressure chamber, and connects with a low pressure source, in order to discharge fluid too much in the above-mentioned pressure chamber.
7, described Controlled deflection roll and the press method as claimed in claim 6, being characterised in that has a pressure-reducing valve in above-mentioned passage, pressure chamber is reduced pressure by predetermined level.
8, a kind of method that in a fluid bearing chamber, increases pressure, this chamber is centered on by a seal, and between the tubular roller shell of a fixed axis and a threaded shaft, this roller shell is suitable for rotation, and add press contacts with relative parts along its working surface, squeeze operation, it is characterized in that this method comprises:
Along with the rotation of roller shell, a fluid streams from the forward position side with respect to the pressure chamber of the direction of rotation of roller, is introduced by seal, to the pressure chamber pressurization,
Release from chamber and to press oil, to keep the predetermined pressure of this chamber.
9, method according to claim 8 is characterized in that the fluid of above-mentioned guiding by seal, alone pressure chamber is pressurizeed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85104692 CN1010958B (en) | 1985-06-19 | 1985-06-19 | Controlled deflection roll and the press method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85104692 CN1010958B (en) | 1985-06-19 | 1985-06-19 | Controlled deflection roll and the press method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85104692A CN85104692A (en) | 1986-12-24 |
| CN1010958B true CN1010958B (en) | 1990-12-26 |
Family
ID=4793999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85104692 Expired CN1010958B (en) | 1985-06-19 | 1985-06-19 | Controlled deflection roll and the press method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1010958B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010029492A1 (en) * | 2010-05-31 | 2011-12-01 | Voith Patent Gmbh | Roller and method for avoiding their vibrations |
-
1985
- 1985-06-19 CN CN 85104692 patent/CN1010958B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN85104692A (en) | 1986-12-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| FI70952C (en) | ANORDNING MED LAONG PRESON VID PRESSBEHANDLING AV FIBERBANA | |
| US4201624A (en) | Extended nip press | |
| FI78753B (en) | PRESSVALS FOER BANDFORMIGT MATERIAL. | |
| US4563245A (en) | Press device, particularly for the removing of water from a web of paper | |
| RU1838490C (en) | Pressing roller with the regulated sagging | |
| US4330023A (en) | Extended nip press | |
| SU1369678A3 (en) | Cylindrical press | |
| FI82274C (en) | Method of hot pressing and drying device | |
| US3748225A (en) | Fibrous web press nip structure including nonporous belts backed by pistons supported with fluid pressure | |
| US3043211A (en) | Roller assemblies for the pressure treatment of materials | |
| US6416631B1 (en) | Pressing apparatus having semipermeable membrane | |
| US6161303A (en) | Pressing apparatus having chamber end sealing | |
| KR890008397A (en) | Deflection roll controlled by magnetic load | |
| JP2906234B2 (en) | Press equipment for paper making machines | |
| EP1793038A2 (en) | Sealing arrangement | |
| CA2147730A1 (en) | Roll for a papermaking machine | |
| JPH0320518B2 (en) | ||
| CA2257574C (en) | Extended nip press with oscillating blanket for extended wear | |
| CN1010958B (en) | Controlled deflection roll and the press method | |
| GB2084265A (en) | Calendar roll machine | |
| JP2900315B2 (en) | Press machine for paper machine | |
| KR890000821B1 (en) | Controled deflection roll | |
| JP4331278B2 (en) | Pressing device | |
| JPS6146598B2 (en) | ||
| CN100348800C (en) | Press roller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |