CN102517959B - Sealing device of boot type squeezing device - Google Patents
Sealing device of boot type squeezing device Download PDFInfo
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- CN102517959B CN102517959B CN201210006005.6A CN201210006005A CN102517959B CN 102517959 B CN102517959 B CN 102517959B CN 201210006005 A CN201210006005 A CN 201210006005A CN 102517959 B CN102517959 B CN 102517959B
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Abstract
The invention discloses a sealing device of a boot type squeezing device. The sealing device comprises a rotating device, wherein the rotating device comprises a fixed cover; the fixed cover is connected with a movable block through a compression connecting piece; squeezing belts are sleeved on the outer circumferences of the movable block and the fixed cover; a sealing piece is arranged among the movable block, the fixed cover and the squeezing belts; the fixed cover is arranged on a boot beam through a bearing; the bearing is fixed on the boot beam through a bearing gland; the bearing gland is fixedly connected with the fixed cover; a wear-resistant sleeve is sleeved on the bearing gland; and the outer side of the wear-resistant sleeve is provided with a framework sealing ring. A movable sealing form in which a compensable framework type oil seal is matched with the wear-resistant sleeve is adopted, so that the sealing service life is longer, and a better sealing effect is achieved. The sealing piece with a structure which is concave on four sides is adopted, so that sealing between the squeezing belts and a rotating mechanism is more reliable, pressing force is stronger, and leakage of oil can be avoided effectively.
Description
Technical field
The present invention relates to a kind of paper making equipment, especially a kind of sealing device of shoe press apparatus.
Background technology
At present between more than 200 year of paper machine development, at press section and calecder section, two is the most frequently used squeezing or press polish mode to columniform pressure roller.But owing to being linear contact lay between two rollers, nip is very narrow, cause in press section dehydration difficulty; Not high at calecder section sheet smoothness.
For addressing these problems, there is shoe press from the early 1980s, now having used growing to it and being tending towards universal.This press type belongs to high squeezing and defeats squeezing or be called wide nip press.Higher squeeze force refers to have higher squeezing specific pressure compared with concora crush roller; Wide nip be also squeeze with traditional pressure roller compared with, l Water Paper page has the longer time of staying in nip.The nip (also referred to as long nip press LNP) that wide nip press is formed based on major diameter pressure roller, the nip length of conventional press is 20-90mm, and roller diameter is 1320-1650mm, the nip length of shoe press is generally 50-300mm, is conducive to page and dewaters better.In shoe-press, squeeze pressure is normally produced by the shoe nip of concave, and belt one deck resilient synthetic material squeezing pad that lower compression roller surface is squeezed by upper pressure roller in shoe nip produced.Shoe-press increases removing of squeeze water by improving the squeezing time, and it mainly utilizes oil pressure to be pressed on the pressure roller on top by the shoe press plate of bottom, supports the woollen blanket of l Water Paper page and the adhesive tape nip by boot last pressing plate and upper pressure roller.Initial shoe-press is open, as shown in Figure 1, and leakage of oil every day about 20 liters.
For this reason, develop again the boots laminated structure of closed, what shoe press plate was arranged on rotation has in good flexible squeeze set, as shown in Figure 2.Shoe press is implemented by the concave surface nip formed between pressure roller and press belt, shoe press plate to squeeze.Its composition order is: paper, cardboard or other thin-film materials enter the region between pressure roller and press belt, and pressurization oil cylinder, is pressurizeed to this thin-film material by shoe press plate.Hydraulic oil enters press belt through in-line, and the region between shoe press plate forms lubricating oil film and forms certain barometric gradient, and unnecessary oil is discharged through siphon device and oil gas system of discharging.Pressure roller drive the press belt through belt stretcher tensioning to rotate as main transmission by rubbing action; Press belt driven rotary device is around the central rotation of boots beam; Make thin-film material be achieved continuous seepage simultaneously.But structure is comparatively complicated, flexible pipe, joint and instrument are numerous; Especially the mating surface hardness of whirligig movable sealing is inadequate, easily leaks, need often change.Frictional force between press belt and whirligig is not enough, and easily leaks.
Summary of the invention
The object of the invention is, for overcoming above-mentioned the deficiencies in the prior art, to provide a kind of sealing device of shoe press apparatus, this apparatus structure be simple, sealing long service life, good sealing effect, reliable, thrust is large, can avoid leaking.
For achieving the above object, the present invention adopts following technical proposals:
A sealing device for shoe press apparatus, comprises whirligig, and described whirligig comprises fixed cap, and fixed cap is connected with movable block by compressing connector; The excircle of described movable block and fixed cap all overlaps and has press belt, and movable block, between fixed cap and press belt, be provided with seal; Fixed cap is arranged on boots beam by bearing; Described bearing is fixed on boots beam by bearing gland, and bearing gland is fixedly connected with fixed cap, and on bearing gland, cover has wear sleeve, is provided with backbone sealing ring outside wear sleeve.
Described backbone sealing ring is pressed on wear sleeve by a spring.
Described seal adopts integral outer ring to be annular, and its section is square hermetically-sealed construction, and four of annular sides are equipped with annular groove, can realize four sides and seal simultaneously, be easy to sealing and step up.
Described wear sleeve and bearing gland adopt interference fit.
Described compression connector is hold-down bolt.
Described wear sleeve is prepared from by bearing steel grinding after quenching.
The present invention is by pressure roller and bearing arrangement, and press belt, shoe press plate, pressurization oil cylinder, siphon device and oil gas discharge system, boots beam and bearing arrangement, whirligig, in-line, the compositions such as belt stretcher.Pressurization oil cylinder, siphon device and oil gas discharge system, whirligig, in-line, and belt stretcher etc. are all fixed on boots beam, and pressurization oil cylinder and shoe press plate are linked together, and are pressurizeed to pressure roller by belt.
Whirligig is made up of seal, fixed cap, bearing, movable block, hold-down bolt, bearing gland, wear sleeve framework type sealing ring etc., for ensureing sealing and the tensioning of press belt, and enables to rotate around boots beam
Present invention employs the movable sealing form that the skeleton-type oil seal of compensability and wear sleeve match, make sealing longer service life, sealing effectiveness is better.
Present invention employs the seal of four sides concave structure, make the sealing between press belt and rotating mechanism more reliable, thrust is larger, effectively can avoid the leakage of fluid.
The present invention is relative to the improvement of prior art, and movable sealing place of shoe press rotary sealing appts adopts skeleton-type oil seal and hard quenched steel component to coordinate; Press belt sealing have employed a kind of seal of new structure.Whirligig for ensureing sealing and the tensioning of press belt, and enables to rotate around boots beam.Make the mating surface hardness of whirligig movable sealing higher, avoid leaking, long service life, the frictional force between press belt and whirligig is comparatively large, and avoiding can the leakage of fluid.
Accompanying drawing explanation
Fig. 1 is open shoe-press structural representation;
Fig. 2 is enclosed shoe-press structural representation; Wherein Fig. 2 (a) is front view, and Fig. 2 (b) is that part sectioned view is looked on a left side;
Fig. 3 is rotary device structure schematic diagram of the present invention;
Fig. 4 is seal schematic cross-section of the present invention;
Wherein 1. pressure roller, 2. press belt, 3. shoe press plate, 4. pressurize oil cylinder, 5. siphon device and oil gas discharge system, 6. boots beam, 7. whirligig, 8. in-line, 9. belt stretcher, 31. seals, 32. fixed caps, 33. movable blocks, 34. bearings, 35. hold-down bolts, 36. bearing glands, 37. wear sleeves, 38 framework type sealing rings, 1A felt, 2A paper.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described.
As Figure 1-4, shoe press is implemented by the concave surface nip formed between pressure roller 1 and press belt 2, shoe press plate 3 to squeeze.Its composition order is: paper 2A, cardboard or other thin-film materials enter the region between pressure roller 1 and press belt 2, and pressurization oil cylinder 4 is pressurizeed to this thin-film material by shoe press plate 3.Hydraulic oil enters press belt 2 through in-line 8, and the region between shoe press plate 3 forms lubricating oil film and forms certain barometric gradient, and unnecessary oil is discharged system 5 through siphon device and oil gas and discharged system.Pressure roller 1 drive the press belt 2 through belt stretcher 9 tensioning to rotate as main transmission by rubbing action; Press belt 2 driven rotary device 7 is around the central rotation of boots beam 6; Make thin-film material be achieved continuous seepage simultaneously.
In shoe-press, squeeze pressure is normally produced by the shoe nip of concave, and shoe nip is by pressure roller 1 press belt 2.Shoe-press increases removing of squeeze water by improving the squeezing time, on the pressure roller 1 that it mainly utilizes oil pressure to be pressed in by shoe press plate 3, supports the felt 1A of l Water Paper page and the adhesive tape nip by shoe press plate 3 and pressure roller 1.
Wherein pressure roller 1 roll body is mild steel, and spindle nose and end cap are 35# steel, roll surface encapsulate, and press belt 2 is waterproof resilient synthetic materials, outside rut line.Shoe press plate 3 is alloy-steel plates.Pressurization oil cylinder 4 is made up of carbon steel, inside has sealing, and can bear certain side-play amount.The in-line 8 that siphon device and oil gas discharge system 5 is made up of stainless steel.Belt stretcher 7 is made up of hydraulic cylinder, compressed-air atomizer, slide block etc., makes the tension force that press belt keeps certain.
Whirligig 7 comprises fixed cap 32, and fixed cap 32 is connected with movable block 33 by hold-down bolt 35; Described movable block 33 and the excircle of fixed cap 32 all overlap and has press belt 2, and movable block 33, between fixed cap 32 and press belt 2, be provided with seal 31; Fixed cap 32 is arranged on boots beam 6 by bearing 34; Described bearing 34 is fixed on boots beam 6 by bearing gland 36, and bearing gland 36 is fixedly connected with fixed cap 32, and on bearing gland 36, cover has wear sleeve 37, is provided with backbone sealing ring 38 outside wear sleeve 37.Whirligig 7 for ensureing sealing and the tensioning of press belt 2, and enables to rotate around boots beam 6.
Backbone sealing ring 38 is pressed on wear sleeve 37 by a spring.Seal 31 adopts integral outer ring to be annular, its section is square hermetically-sealed construction, and four of annular sides are equipped with annular groove, four sides can be realized seal simultaneously, be easy to sealing and step up, seal 31 is structures of a kind of easy compression, while can ensureing good sealing effectiveness, is closely forced together with whirligig by press belt.Wear sleeve 37 and bearing gland 36 adopt interference fit, can ensure to combine closely.
Wear sleeve 37 is made up of bearing steel, and after quenching, grinding forms, and has very high hardness and surface smoothness, can ensure good sealing and and minimum friction.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.
Claims (4)
1. the sealing device of shoe press apparatus, comprises whirligig, and described whirligig comprises fixed cap, and fixed cap is connected with movable block by compressing connector; The excircle of described movable block and fixed cap all overlaps and has press belt, it is characterized in that, described movable block, between fixed cap and press belt, be provided with seal, described seal adopts integral outer ring to be annular, its section is square hermetically-sealed construction, and four of annular sides are equipped with annular groove; Fixed cap is arranged on boots beam by bearing; Described bearing is fixed on boots beam by bearing gland, and bearing gland is fixedly connected with fixed cap, and on bearing gland, cover has wear sleeve, is provided with backbone sealing ring outside wear sleeve; Described backbone sealing ring is pressed on wear sleeve by a spring.
2. the sealing device of shoe press apparatus as claimed in claim 1, is characterized in that, described wear sleeve and bearing gland adopt interference fit.
3. the sealing device of shoe press apparatus as claimed in claim 1, it is characterized in that, described compression connector is hold-down bolt.
4. the sealing device of shoe press apparatus as claimed in claim 1, is characterized in that, described wear sleeve is prepared from by bearing steel grinding after quenching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210006005.6A CN102517959B (en) | 2012-01-10 | 2012-01-10 | Sealing device of boot type squeezing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210006005.6A CN102517959B (en) | 2012-01-10 | 2012-01-10 | Sealing device of boot type squeezing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102517959A CN102517959A (en) | 2012-06-27 |
| CN102517959B true CN102517959B (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210006005.6A Active CN102517959B (en) | 2012-01-10 | 2012-01-10 | Sealing device of boot type squeezing device |
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| Country | Link |
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| CN (1) | CN102517959B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134956A (en) * | 2015-09-21 | 2015-12-09 | 中国船舶重工集团公司第七〇五研究所 | Axial dynamic seal structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1873092A (en) * | 2005-05-31 | 2006-12-06 | 市川毛织株式会社 | Shoe press mechanism of paper machine |
| CN202466294U (en) * | 2012-01-10 | 2012-10-03 | 山东昌华造纸机械有限公司 | Sealing device of shoe type squeezing device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002064885A1 (en) * | 2001-02-13 | 2002-08-22 | Pmt Italia Paper Machinery Technology Spa | An anchor device for anchoring a peripheral edge of a press blanket |
| DE10138526A1 (en) * | 2001-08-06 | 2003-02-20 | Voith Paper Patent Gmbh | Flexible press mantle, for a shoe press roller at a papermaking or cardboard production machine, has an additional reinforcement at the end zones to fit over a carrier e.g. an expanding ring |
| BR0318220A (en) * | 2003-03-31 | 2006-03-21 | Pmt Italia Spa | press-type device for removing water from a screen |
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2012
- 2012-01-10 CN CN201210006005.6A patent/CN102517959B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1873092A (en) * | 2005-05-31 | 2006-12-06 | 市川毛织株式会社 | Shoe press mechanism of paper machine |
| CN202466294U (en) * | 2012-01-10 | 2012-10-03 | 山东昌华造纸机械有限公司 | Sealing device of shoe type squeezing device |
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| Publication number | Publication date |
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| CN102517959A (en) | 2012-06-27 |
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