CA2140780A1 - Sliding ring packing - Google Patents
Sliding ring packingInfo
- Publication number
- CA2140780A1 CA2140780A1 CA 2140780 CA2140780A CA2140780A1 CA 2140780 A1 CA2140780 A1 CA 2140780A1 CA 2140780 CA2140780 CA 2140780 CA 2140780 A CA2140780 A CA 2140780A CA 2140780 A1 CA2140780 A1 CA 2140780A1
- Authority
- CA
- Canada
- Prior art keywords
- ring
- packing
- drum
- moving
- stationary
- 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.)
- Abandoned
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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3464—Mounting of the seal
- F16J15/348—Pre-assembled seals, e.g. cartridge seals
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/36—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member connected by a diaphragm or bellow to the other member
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Sealing (AREA)
- Sealing Devices (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Filtration Of Liquid (AREA)
Abstract
2140780 9403744 PCTABScor01 A sliding ring packing between two parts, in particular a packing on the inlet part of a drum filter comprising a stationary packing ring (2) fixed to one of the parts and, pressed onto it, a moving ring (1) coupled with the other of the two parts. To the moving ring (1) is fixed one end of a resilient ring membrane (4) whose the other end is fixed between a guiding ring (8) and a supporting ring (6) between which is seated an overlapping resilient packing (9) providing for the pressure of the guiding ring (8) on the supporting ring (6).
Description
`" ~ 21~0780 1 -- .
~ Dec~ription t ~ ~lidinq Rinq Pac~inq ~' Technical field The invention relates to a sliding ring packing between , ~i~ two parts, in particular a sliding ring packing on the inlet part of a drum filter comprising- a stationary packing ring fixed to first part and the supporting ring fixed to the sacond part, wherein between stationary packing ring and second part is placed the moving ring, pressed to the stationary packing ring.
Back~round of the Invention Sliding ring pac~ings of large-diameter rotary surfaces are used for instance ln drum filters serving for cleaning soiled waste water. In know drum filters, the soiled waste water is led into the inner space of the rotary drum filter whose lower part is in the filtered water, the level of the solled waste water lnside the drum of the drum filter being higher than the level of the filtered water outside the drum of the drum filter, The packing on the inlet part of the - - ~drum filter serves to prevent the unfiltered water outside the drum of the drum filter from getting into the space ; between the stationary and the rotary parts of the drum fllte~r due to the hydrostatic pressure produced by the level difference inside and outside the drum of the drum filter.
A~typical feature of these sliding ring' packings consist in the large diame~er of the packed surface an~ in the risk of unwanted radial and axial movements of the rotary part of the drum filter due to inaccurate seating.~
The heretofore known packing of the drum filter consists f a hose filled with water under adjustable pressure and - seated be~ween the stationary and the rotary part of the 3~ ~ -~: ~ AMENDED SHEET
~ ~ ~140780 i ; - 2 .:
.
`s drum filter. The hose spreading provides for eliminating the -~ gap between the stationary and the rotary parts of the drum ~- filter. Even if the rubber hose can be replaced by a hose made of another elastic material, this pac~ing is marked by ~`` low service life, unreliable working, increased need both to chec~ its function and to carry out its maintenance. At the ~, same time, this type of packing features high resistance against the rotation of the drum filter.
. .
Another known slidlng ring packing, described in US 4.8S4.S98, is used in pumps for liquids. The packing comprises a ring made of a hard material and fixed in the moving wheel of the pump. Onto this ring made of a hard material is pressed a sliding ring made of a graphite-saturated resin by means of an axially acting spring. This packing is intended for small diameter packings and high rotation speeds.
The use of this design for drum filter packings is impossible, because the sliding ring wouLd get worn-out in a~very short time, and the packing would cease to fulfil its functlon due to the fact that the minima1 pressure force of the spring must be adjusted -for the minimal required pressure force at the maximal wear of the sliding ring, so that the pressure force is uselessly excessive for the sllding ring not yet worn-out.
Another embodiment of the sliding ring packing according to US patent 2,404,690 compFises a stationary steel ring onto which is pressed a moving bronze ring on which is drawn one end of a collar whose the other end is fastened to the shaft by means of an elastic ring pac~ing w~ich is held-in its operative position by means of a retainer cup set thereon and by means of a first pressure spring- Similarly, the collar is fixed to the mo~ing bronze ring by means of an elastic ring mounted in a retainer cup which is in contact with a second pressure spring which also pressed the moving A~ENO'D S~iEET
~1~0780 , . .
f~ - 3 -vj~t bronze ~ing onto the stationary steel ring. This pac~ing, as .. ~
well, is used for small-diameter packings and for high ~rotation speeds.
Even this embodiment of the sliding ring packing is not applicable for the sliding ring packing of the drum filter, because the pressure of the ~moving ring onto the stationary ring is provided ~y a pressure spring which must be dlmensioned for the lowest pressure force required to press the~moving ring to~the stationary one at the maximum r~ear of the maving ring. Wlth the moving ring not yet worn-out, the pressure spring~is~compressed more, and the~pressure force is-~due to this use,lessly increased by the deformation force of the spring. This method of pressing the movin9 ring onto the stationary one is applicable only ts sliding ring packings~ wlth ~small wear of the~ moving ring ~and, conse~uently, not~or the sliding ring,packing of a drum , fllter, where~saLd wear is conslderably hlgh. ' Dlsclosure~of invention The~above spec~lfled drawbacks of the~ state of art are removed~by a sliding ring packing according to the invention who~sè~prlnciple, consists in that at the end of the moving ring adjacent the~second part is fixed the resilient ring membrane~whose free~end~is pressed by~ the resilient packing member to, the gu~iding ring placed ~etween the moving ring and the supporting~ring and gripped between a stop inside supporting ring and said guiding ring.
For pressing of the moving ring during filling of the drum filter with liquid until the level of the liquid in the drum has not yet reached the level of the resilient ring membrane can ~e to the Supporting ring fixed one end of the torSion spring whose free end leans against the inner face ,of the moving ring adjacent the second part.
AMEND~D SHEET
~, 21~0780 - 3a -t ~; Brief Description of the Drawinq i . , An example of emho-lLment of tt~e sl.iding ring p~k i n~ i s st~own in the ~ccompany i nq ~lrawi.n~ . ~
.~ ~
' 1 Modes for Carryinq Out the Invention The sli~ing ring packing of large-diameter r~tar.-y parts wi:ll be described :on the exampl.e o~ em~odiment o~ t~le slid:ing ring packing of the inlet part of a drum filter.
:The ~rum filter ~omprises a stationary fram;P 3 ~avirlq a hole to let soiled water or another liquid to he ~i].tere~
`~ enter:the lnner space of the drum filter. Around Sa.Ld hole and fixed to the stati:onary frame 3 is a stationary packing r~ing 2 contacted by a moving ring 1 whose inner diametPr is in~:the shown : ~ :
~, ~, --AMENDED SHEF '~
-~094/03744 PCT/CZ93/~18 ,...................................... .
embodiment larger th~n the diameter of the hole of the stationary packing ring 2. As the smallest suitable ~,; inner diameter of the moving ring 1 may be taken the dismeter of the hole of ~he stationary packing ring 2. The moving ring 1 is coupled with the face 7 of a drum 5 made as a ring disc which is a part of ~he supporting frame of the drum S carrying and having fixed thereto well-known filter cloths through which passes and thus filters in well-known manner the ~7~ 90iled liquid passing during the filtering process into~the space~outs~ide the drum 5 of the drum filter where it is collected and in a not represented well known m~nne~r~ taken away.The diameter of the hole provided in the face ~ of the drum 5 is equal or superior to the inner diameter of the msving ring The level difference between the soiled liquid in ide the drum 5 and the filtered liquid outside the drum 5 proY1des for hydrostatic pressure ind~ispensable f~or the working of the drum filter.
HoweYer, at the same time, it is necessary to prevent the~soiled liquid from enterin8 thc space outside the~drum 5 e~cept th~ filter cloths which could occur between the face 7 of the drum 5 and the moving ring and also between the moving ~ring 1 and the ~ 9 t - t i o na F ~ pack1ng r1ng 2-To the face 7 of the drum 5 is fixed a shaped upporting ring 6 fitted on its rim with reinforcing bendings between which is in the shown e~ample ~f embodiment provided a cylindrical part whose outward g~ part can be used in a well-known way for embracing with a well-known, not represented supporting and dr~ving means, for instance with a beIt. Inside the 17','~ supporting rin8 6 is fi~ed a stop lO which can consist 'J,~ of a rlng body fi~ed to the supporting rlng 6, for instsnce by welding, or it can be made as one piece with the supporting ring 6.
Fi~ed on the outward circumference of the moving 7, '.'j:
j ~094/037~4 PCT/CZ93/00018 , -5-ring 1, on the side adjacent the face 7 of the dr~m 5, is a resilient ring membrane 4 whose free end is put on the inner end of the guiding ring ~ inserted in the space inside a carrying ring . The inner d~iameter of the inner end of the guiding ring 8 is ,superior to the outer diameter of the moving ring b~y more than four times the thickness of the resili-ent ring membrane 4.
The minima~I length ln which the~resilient ring mem~brane 4 is put on the guiding ring 8 is e~ual to the size of the~ contacting surface~ of the guiding ring 8 on the stop 10 of the supporting ring 6. Between the part of the outer surface of the guiding ring I~ 8~ and the part of~the inner surface of th~e supporting ring~ 6 is inse~rt~ed an overlapping resilient packing 9 ~filling and packing the space between the guiding ring~8~and the~supportlng ring 6. The inserted resili-ent ~packing 9~ser~es also to fix the resilient~ring membrane~ 4 on ~the guiding ring 8, the guiding ring 8~being~ pressed together wlth the resillent ring mem-brane 4 to the sto p~ 10 of the supportlng rin~g 6.~ ~
Under ~he action of the hydrostatic pressure exert~ed from inside on the resil1ent ring ~membrane 4 and due to the fixed connection ~of the membrane 4 ~with the moYing~ ring 1, the moving ring 1 i 9 pressed onto the sur~ace of the stationary packing ring 2 made of abrasion resistant material. Due to this arran-gement, at ~ufficient length of the resilient~membrane 4 can the moving ring 1 made of a known material con-talning graphite wear by as much as three quarters - ~f its length without decreasing ~he packing effect.
The pressure force acting on the moving ring 1 is not affected by the wear and can be therefore throughout set at the minimum. The pre~ssure force acts on the moving ring 1 even when the drum 5 does 7,~,s ~
~"~ ' ' , ~ .
~140780 ~ N094/03744 PCT/CZ93/~18 ... .
, .
not rotate.
As is the case in the shown embodiment, to the supporting ring 6 can be fi~ed a guiding 12 having seated thereon a torsion spring ll whose free end leans against the inner face of the moving ring and which serYes to create additional pressure of the moYing ~ring 1 on the stationarg packing ring 2.
The torsion spring ll proYides for the pressure on the moYing rin~g 1 when the drum filter is being set in~to operstion, when the drum 5 is being fed with liquid ~and the ~mo~ing ring 1 is not yet pressed onto the~stationary packing -ring 2 by the hydrostatic pres-ure, becau~e the level of the liquid in the drum 5~ has not yet rcached the resilient ring membrane In ~nother, DQt shown embodiment, the stationary packing ring 2 :can be mounted (seated~ on the face 7 ;of the drum 5, and the mo~ing ring 1 together with -the other related parts of the sl;iding ring packing can be~seated~on t:he ~tationary frame 3.
In:the drum filter operation, soiled Iiquid is in a well-known :manner fed into the drum 5 n the ;di-rect~ion of the~arrow:through~the hole provided in the stationary-frame 3 through the~ sliding rin8 packing and is due to the hydrostatic pressure resultin~ from the le~el difference inside and outside the drum 5 in a well-known ~ay filtered through the filter cloths of the drum 5. Said hydrostatic pressure acts on the resilient rlng~membrane 4 and through its fr~ee part between the moving ring 1 and the place of gripping between the stop 10 of the supporting ring 6 and the guidi~g ring 8 exerts pressure force on the moving ring 1. Thus, the resilient ring membrane 4 acts at the ~ame time as a packing ~ember of the inner space .~:
.~5' ~ .
r. ~:
094/03744 7 P~r/czg3/o~l8 of the drum 5 and as a driving member of the moving ring 1.
Non-uniform deposition of soiled matter on the cloths of the drum 5 can result during the drum rotary mo~ement in impacts l.eading to radial or axial swings of the drum 50 Radial swing of the drum 5 results in a reversing radial displacement of- the moYing rin~g 1 on the stationary packing ring 2. A~ial swing of the drum 5 results in a~ial swing of the supporting r~ng .6 fi~ed to the drum 5. The motion of the support-ing ring 6 is shared by the resilient packing member 9, ::guiding ring~8, and by the part of the resilient ring membrane: 4 gripped between the guiding ring 8 and the stop 10 of the supporting:ring 6. In each of these cases, the guiding rinB 8~remains pressed to the stationar~y packing ring 2 due to the hydroststic pressure on the:resilient ring membrane 4.
Field~of APplication The~ sliding:~ ring packing accordi:ng to the inYention can be used for the packing of ~he inlet pa~rt:s of:the drum~ filters of waste water or for the packing of other large-diame-ter slowly~or interruptedly rotating parts .
. ~
' ~
;~
:'~ ~ , .
~ Dec~ription t ~ ~lidinq Rinq Pac~inq ~' Technical field The invention relates to a sliding ring packing between , ~i~ two parts, in particular a sliding ring packing on the inlet part of a drum filter comprising- a stationary packing ring fixed to first part and the supporting ring fixed to the sacond part, wherein between stationary packing ring and second part is placed the moving ring, pressed to the stationary packing ring.
Back~round of the Invention Sliding ring pac~ings of large-diameter rotary surfaces are used for instance ln drum filters serving for cleaning soiled waste water. In know drum filters, the soiled waste water is led into the inner space of the rotary drum filter whose lower part is in the filtered water, the level of the solled waste water lnside the drum of the drum filter being higher than the level of the filtered water outside the drum of the drum filter, The packing on the inlet part of the - - ~drum filter serves to prevent the unfiltered water outside the drum of the drum filter from getting into the space ; between the stationary and the rotary parts of the drum fllte~r due to the hydrostatic pressure produced by the level difference inside and outside the drum of the drum filter.
A~typical feature of these sliding ring' packings consist in the large diame~er of the packed surface an~ in the risk of unwanted radial and axial movements of the rotary part of the drum filter due to inaccurate seating.~
The heretofore known packing of the drum filter consists f a hose filled with water under adjustable pressure and - seated be~ween the stationary and the rotary part of the 3~ ~ -~: ~ AMENDED SHEET
~ ~ ~140780 i ; - 2 .:
.
`s drum filter. The hose spreading provides for eliminating the -~ gap between the stationary and the rotary parts of the drum ~- filter. Even if the rubber hose can be replaced by a hose made of another elastic material, this pac~ing is marked by ~`` low service life, unreliable working, increased need both to chec~ its function and to carry out its maintenance. At the ~, same time, this type of packing features high resistance against the rotation of the drum filter.
. .
Another known slidlng ring packing, described in US 4.8S4.S98, is used in pumps for liquids. The packing comprises a ring made of a hard material and fixed in the moving wheel of the pump. Onto this ring made of a hard material is pressed a sliding ring made of a graphite-saturated resin by means of an axially acting spring. This packing is intended for small diameter packings and high rotation speeds.
The use of this design for drum filter packings is impossible, because the sliding ring wouLd get worn-out in a~very short time, and the packing would cease to fulfil its functlon due to the fact that the minima1 pressure force of the spring must be adjusted -for the minimal required pressure force at the maximal wear of the sliding ring, so that the pressure force is uselessly excessive for the sllding ring not yet worn-out.
Another embodiment of the sliding ring packing according to US patent 2,404,690 compFises a stationary steel ring onto which is pressed a moving bronze ring on which is drawn one end of a collar whose the other end is fastened to the shaft by means of an elastic ring pac~ing w~ich is held-in its operative position by means of a retainer cup set thereon and by means of a first pressure spring- Similarly, the collar is fixed to the mo~ing bronze ring by means of an elastic ring mounted in a retainer cup which is in contact with a second pressure spring which also pressed the moving A~ENO'D S~iEET
~1~0780 , . .
f~ - 3 -vj~t bronze ~ing onto the stationary steel ring. This pac~ing, as .. ~
well, is used for small-diameter packings and for high ~rotation speeds.
Even this embodiment of the sliding ring packing is not applicable for the sliding ring packing of the drum filter, because the pressure of the ~moving ring onto the stationary ring is provided ~y a pressure spring which must be dlmensioned for the lowest pressure force required to press the~moving ring to~the stationary one at the maximum r~ear of the maving ring. Wlth the moving ring not yet worn-out, the pressure spring~is~compressed more, and the~pressure force is-~due to this use,lessly increased by the deformation force of the spring. This method of pressing the movin9 ring onto the stationary one is applicable only ts sliding ring packings~ wlth ~small wear of the~ moving ring ~and, conse~uently, not~or the sliding ring,packing of a drum , fllter, where~saLd wear is conslderably hlgh. ' Dlsclosure~of invention The~above spec~lfled drawbacks of the~ state of art are removed~by a sliding ring packing according to the invention who~sè~prlnciple, consists in that at the end of the moving ring adjacent the~second part is fixed the resilient ring membrane~whose free~end~is pressed by~ the resilient packing member to, the gu~iding ring placed ~etween the moving ring and the supporting~ring and gripped between a stop inside supporting ring and said guiding ring.
For pressing of the moving ring during filling of the drum filter with liquid until the level of the liquid in the drum has not yet reached the level of the resilient ring membrane can ~e to the Supporting ring fixed one end of the torSion spring whose free end leans against the inner face ,of the moving ring adjacent the second part.
AMEND~D SHEET
~, 21~0780 - 3a -t ~; Brief Description of the Drawinq i . , An example of emho-lLment of tt~e sl.iding ring p~k i n~ i s st~own in the ~ccompany i nq ~lrawi.n~ . ~
.~ ~
' 1 Modes for Carryinq Out the Invention The sli~ing ring packing of large-diameter r~tar.-y parts wi:ll be described :on the exampl.e o~ em~odiment o~ t~le slid:ing ring packing of the inlet part of a drum filter.
:The ~rum filter ~omprises a stationary fram;P 3 ~avirlq a hole to let soiled water or another liquid to he ~i].tere~
`~ enter:the lnner space of the drum filter. Around Sa.Ld hole and fixed to the stati:onary frame 3 is a stationary packing r~ing 2 contacted by a moving ring 1 whose inner diametPr is in~:the shown : ~ :
~, ~, --AMENDED SHEF '~
-~094/03744 PCT/CZ93/~18 ,...................................... .
embodiment larger th~n the diameter of the hole of the stationary packing ring 2. As the smallest suitable ~,; inner diameter of the moving ring 1 may be taken the dismeter of the hole of ~he stationary packing ring 2. The moving ring 1 is coupled with the face 7 of a drum 5 made as a ring disc which is a part of ~he supporting frame of the drum S carrying and having fixed thereto well-known filter cloths through which passes and thus filters in well-known manner the ~7~ 90iled liquid passing during the filtering process into~the space~outs~ide the drum 5 of the drum filter where it is collected and in a not represented well known m~nne~r~ taken away.The diameter of the hole provided in the face ~ of the drum 5 is equal or superior to the inner diameter of the msving ring The level difference between the soiled liquid in ide the drum 5 and the filtered liquid outside the drum 5 proY1des for hydrostatic pressure ind~ispensable f~or the working of the drum filter.
HoweYer, at the same time, it is necessary to prevent the~soiled liquid from enterin8 thc space outside the~drum 5 e~cept th~ filter cloths which could occur between the face 7 of the drum 5 and the moving ring and also between the moving ~ring 1 and the ~ 9 t - t i o na F ~ pack1ng r1ng 2-To the face 7 of the drum 5 is fixed a shaped upporting ring 6 fitted on its rim with reinforcing bendings between which is in the shown e~ample ~f embodiment provided a cylindrical part whose outward g~ part can be used in a well-known way for embracing with a well-known, not represented supporting and dr~ving means, for instance with a beIt. Inside the 17','~ supporting rin8 6 is fi~ed a stop lO which can consist 'J,~ of a rlng body fi~ed to the supporting rlng 6, for instsnce by welding, or it can be made as one piece with the supporting ring 6.
Fi~ed on the outward circumference of the moving 7, '.'j:
j ~094/037~4 PCT/CZ93/00018 , -5-ring 1, on the side adjacent the face 7 of the dr~m 5, is a resilient ring membrane 4 whose free end is put on the inner end of the guiding ring ~ inserted in the space inside a carrying ring . The inner d~iameter of the inner end of the guiding ring 8 is ,superior to the outer diameter of the moving ring b~y more than four times the thickness of the resili-ent ring membrane 4.
The minima~I length ln which the~resilient ring mem~brane 4 is put on the guiding ring 8 is e~ual to the size of the~ contacting surface~ of the guiding ring 8 on the stop 10 of the supporting ring 6. Between the part of the outer surface of the guiding ring I~ 8~ and the part of~the inner surface of th~e supporting ring~ 6 is inse~rt~ed an overlapping resilient packing 9 ~filling and packing the space between the guiding ring~8~and the~supportlng ring 6. The inserted resili-ent ~packing 9~ser~es also to fix the resilient~ring membrane~ 4 on ~the guiding ring 8, the guiding ring 8~being~ pressed together wlth the resillent ring mem-brane 4 to the sto p~ 10 of the supportlng rin~g 6.~ ~
Under ~he action of the hydrostatic pressure exert~ed from inside on the resil1ent ring ~membrane 4 and due to the fixed connection ~of the membrane 4 ~with the moYing~ ring 1, the moving ring 1 i 9 pressed onto the sur~ace of the stationary packing ring 2 made of abrasion resistant material. Due to this arran-gement, at ~ufficient length of the resilient~membrane 4 can the moving ring 1 made of a known material con-talning graphite wear by as much as three quarters - ~f its length without decreasing ~he packing effect.
The pressure force acting on the moving ring 1 is not affected by the wear and can be therefore throughout set at the minimum. The pre~ssure force acts on the moving ring 1 even when the drum 5 does 7,~,s ~
~"~ ' ' , ~ .
~140780 ~ N094/03744 PCT/CZ93/~18 ... .
, .
not rotate.
As is the case in the shown embodiment, to the supporting ring 6 can be fi~ed a guiding 12 having seated thereon a torsion spring ll whose free end leans against the inner face of the moving ring and which serYes to create additional pressure of the moYing ~ring 1 on the stationarg packing ring 2.
The torsion spring ll proYides for the pressure on the moYing rin~g 1 when the drum filter is being set in~to operstion, when the drum 5 is being fed with liquid ~and the ~mo~ing ring 1 is not yet pressed onto the~stationary packing -ring 2 by the hydrostatic pres-ure, becau~e the level of the liquid in the drum 5~ has not yet rcached the resilient ring membrane In ~nother, DQt shown embodiment, the stationary packing ring 2 :can be mounted (seated~ on the face 7 ;of the drum 5, and the mo~ing ring 1 together with -the other related parts of the sl;iding ring packing can be~seated~on t:he ~tationary frame 3.
In:the drum filter operation, soiled Iiquid is in a well-known :manner fed into the drum 5 n the ;di-rect~ion of the~arrow:through~the hole provided in the stationary-frame 3 through the~ sliding rin8 packing and is due to the hydrostatic pressure resultin~ from the le~el difference inside and outside the drum 5 in a well-known ~ay filtered through the filter cloths of the drum 5. Said hydrostatic pressure acts on the resilient rlng~membrane 4 and through its fr~ee part between the moving ring 1 and the place of gripping between the stop 10 of the supporting ring 6 and the guidi~g ring 8 exerts pressure force on the moving ring 1. Thus, the resilient ring membrane 4 acts at the ~ame time as a packing ~ember of the inner space .~:
.~5' ~ .
r. ~:
094/03744 7 P~r/czg3/o~l8 of the drum 5 and as a driving member of the moving ring 1.
Non-uniform deposition of soiled matter on the cloths of the drum 5 can result during the drum rotary mo~ement in impacts l.eading to radial or axial swings of the drum 50 Radial swing of the drum 5 results in a reversing radial displacement of- the moYing rin~g 1 on the stationary packing ring 2. A~ial swing of the drum 5 results in a~ial swing of the supporting r~ng .6 fi~ed to the drum 5. The motion of the support-ing ring 6 is shared by the resilient packing member 9, ::guiding ring~8, and by the part of the resilient ring membrane: 4 gripped between the guiding ring 8 and the stop 10 of the supporting:ring 6. In each of these cases, the guiding rinB 8~remains pressed to the stationar~y packing ring 2 due to the hydroststic pressure on the:resilient ring membrane 4.
Field~of APplication The~ sliding:~ ring packing accordi:ng to the inYention can be used for the packing of ~he inlet pa~rt:s of:the drum~ filters of waste water or for the packing of other large-diame-ter slowly~or interruptedly rotating parts .
. ~
' ~
;~
:'~ ~ , .
Claims (2)
1. A sliding ring packing between two parts, in particular a sliding ring packing on the inlet part of a drumfilter comprising a stationary packing ring fixed to first part and the` supporting ring fixed to the second part, wherein between stationary packing ring and second part is placed the moving ring, pressed to the stationary packing ring, characterized by that at the end of the moving ring (1) adjacent the second part is fixed the resilient ring membrane, the free end of the resilient ring membrane is pressed by the resilient packing member (9) to the guiding ring (8) placed between the moving ring (1) and the supporting ring (6) and gripped between a stop (10) inside supporting ring (6) and set guiding ring (8).
2. A sliding ring packing as claimed in claim 1, characterized by that to the supporting ring (6) is fixed one end of the torsion spring (11) whose free end leans against the inner face of the moving ring (1) adjacent the second part.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CZPV2405-92 | 1992-08-03 | ||
| CS922405A CZ278856B6 (en) | 1992-08-03 | 1992-08-03 | Sliding ring-shaped packing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2140780A1 true CA2140780A1 (en) | 1994-02-17 |
Family
ID=5361122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2140780 Abandoned CA2140780A1 (en) | 1992-08-03 | 1993-08-02 | Sliding ring packing |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0653031A1 (en) |
| AU (1) | AU4557093A (en) |
| CA (1) | CA2140780A1 (en) |
| CZ (1) | CZ278856B6 (en) |
| FI (1) | FI950471A (en) |
| HU (1) | HUT69576A (en) |
| PL (1) | PL307239A1 (en) |
| SK (1) | SK277917B6 (en) |
| WO (1) | WO1994003744A1 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2404690A (en) * | 1944-04-17 | 1946-07-23 | Thompson Prod Inc | Shaft seal |
-
1992
- 1992-08-03 CZ CS922405A patent/CZ278856B6/en unknown
- 1992-08-03 SK SK240592A patent/SK277917B6/en unknown
-
1993
- 1993-08-02 WO PCT/CZ1993/000018 patent/WO1994003744A1/en not_active Application Discontinuation
- 1993-08-02 PL PL93307239A patent/PL307239A1/en unknown
- 1993-08-02 EP EP93915635A patent/EP0653031A1/en not_active Withdrawn
- 1993-08-02 AU AU45570/93A patent/AU4557093A/en not_active Abandoned
- 1993-08-02 CA CA 2140780 patent/CA2140780A1/en not_active Abandoned
- 1993-08-02 HU HU9500339A patent/HUT69576A/en unknown
-
1995
- 1995-02-02 FI FI950471A patent/FI950471A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| PL307239A1 (en) | 1995-05-15 |
| FI950471A0 (en) | 1995-02-02 |
| HU9500339D0 (en) | 1995-03-28 |
| HUT69576A (en) | 1995-09-28 |
| CZ278856B6 (en) | 1994-07-13 |
| EP0653031A1 (en) | 1995-05-17 |
| FI950471A (en) | 1995-02-02 |
| SK240592A3 (en) | 1995-08-09 |
| WO1994003744A1 (en) | 1994-02-17 |
| SK277917B6 (en) | 1995-08-09 |
| AU4557093A (en) | 1994-03-03 |
| CZ240592A3 (en) | 1994-04-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |