CN102818026B - Centrifugal and labyrinth combined sealing device for vertical main shaft - Google Patents

Centrifugal and labyrinth combined sealing device for vertical main shaft Download PDF

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Publication number
CN102818026B
CN102818026B CN201210281575.6A CN201210281575A CN102818026B CN 102818026 B CN102818026 B CN 102818026B CN 201210281575 A CN201210281575 A CN 201210281575A CN 102818026 B CN102818026 B CN 102818026B
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CN
China
Prior art keywords
centrifugal
ring
labyrinth
seal
oil storage
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 - Fee Related
Application number
CN201210281575.6A
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Chinese (zh)
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CN102818026A (en
Inventor
蒋书运
徐春冬
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Southeast University
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Southeast University
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Filing date
Publication date
Application filed by Southeast University filed Critical Southeast University
Priority to CN201210281575.6A priority Critical patent/CN102818026B/en
Publication of CN102818026A publication Critical patent/CN102818026A/en
Application granted granted Critical
Publication of CN102818026B publication Critical patent/CN102818026B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The invention relates to a centrifugal and labyrinth combined sealing device for a vertical main shaft, which comprises a rotary shaft (1), a centrifugal sealing piece (2), a labyrinth sealing piece (3), a centrifugal sealing ring (4), an oil storage ring (5), an end cover (6) and a housing (7), wherein the rotary shaft (1) is positioned in the housing (7), the centrifugal sealing piece (2) is installed on the lower end of the rotary shaft (1), the centrifugal sealing ring (4) is installed on the lower end of the housing (7), the lower side of the centrifugal sealing ring (4) is provided with the oil storage ring (5), the lower side of the oil storage ring (5) is provided with the end cover (6), the labyrinth sealing piece (3) is arranged between the end cover (6) and the centrifugal sealing piece (2), and an annular space as an oil storage chamber (18) is formed in a center defined by the labyrinth sealing piece (3), the centrifugal sealing ring (4), the oil storage ring (5) and the end cover (6). Without external equipment, due to the adoption non-contact seal, the centrifugal and labyrinth combined sealing device has the advantages of no friction power consumption, long service life and no influence on the rotation precision of a main shaft and is expected to provide a kind of novel sealing mode for sealing the end surface of the main shaft.

Description

A kind of for the centrifugal of vertical spindle and labyrinth combination sealing arrangement
Technical field
The present invention relates to a kind of for the centrifugal of vertical spindle and labyrinth combination sealing arrangement, belong to the technical field of Machine Design.
Background technique
Traditional large-scale vertical main shaft often adopts sliding bearing to support, no matter be static-pressure sliding bearing, or hydrodynamic sliding bearing, all lubricant oil must be passed into during work, lubricant oil is by reclaiming after sliding bearing again, and recycle, generally do not allow lubricant oil directly to be flowed out by end face and enter cutting or grinding region.For avoiding lubricant oil by face leakage, main-axis end is generally equipped with shaft end seal device, and common have: mechanical seal, labyrinth seal, spiral seal and non-contact air sealing etc.The contacting mechanical seal sealing configuration life-span is short, and affects spindle rotation accuracy; Labyrinth seal and spiral seal belong to non-contact seals, do not affect spindle rotation accuracy, but voltage endurance capability is limited, when hydrodynamic pressure is higher, will affect sealability; Non-contact air sealing must pass into pressurized gas by outside, adds sealing cost.
Summary of the invention
technical problem:for solving above-mentioned technical deficiency, the invention provides a kind of for the centrifugal of vertical spindle and labyrinth combination sealing arrangement.This device is without the need to increasing external equipment, and due to noncontact seal, without friction power loss, the life-span is long, does not affect spindle rotation accuracy, is expected as main shaft end face seal provides a class closed.
technological scheme:of the present inventionly to comprise for the centrifugal of vertical spindle and labyrinth combination sealing arrangement: running shaft, centrifugal seal part, labyrinth seal, centrifugal seal ring, oil storage ring, end cap, shell; Running shaft is arranged in shell, centrifugal seal part is arranged on the lower end of running shaft, centrifugal seal ring is arranged on the lower end of shell, oil storage ring is provided with on the downside of centrifugal seal ring, end cap is provided with in the downside of oil storage ring, between end cap and centrifugal seal part, be provided with labyrinth seal, be formed centrally an annular space in surrounding by labyrinth seal, centrifugal seal ring, oil storage ring, end cap and be accumulator.
Centrifugal seal Ring current distribution hole is taper hole, and the miner diameter end of taper hole is near the lower end of shell; The outside on centrifugal seal part top is frustum, and matches with centrifugal seal ring.
Gap is left, for getting rid of lubricant oil into accumulator between the frustum of centrifugal seal part upper outside and centrifugal seal Ring current distribution taper hole.
The frustum bigger diameter end of centrifugal seal part is provided with some annular grooves, for forming labyrinth seal with the annular gear piece of labyrinth seal.
beneficial effect:of the present invention for the centrifugal of vertical spindle and labyrinth combination sealing arrangement, mainly comprise: running shaft, centrifugal seal assembly, labyrinth seal, shell etc., during running shaft High Rotation Speed, when the lubricant oil leaked is through centrifugal seal assembly, to be centrifuged and throw away, enter accumulator, enter reclaim line by the spill port on accumulator, the labyrinth seal of labyrinth seal and centrifugal seal part composition will prevent outflow of lubrication oil, thus reach sealing effect.
Accompanying drawing explanation
Fig. 1 is general structure schematic diagram of the present invention.
Fig. 2 is centrifugal seal ring structure schematic diagram.
Fig. 3 centrifugal seal part structural representation.
Fig. 4 labyrinth seal structural representation.
Embodiment
Of the present invention for the centrifugal of vertical spindle and labyrinth combination sealing arrangement, mainly comprise: running shaft 1, centrifugal seal part 2, labyrinth seal 3, centrifugal seal ring 4, oil storage ring 5, end cap 6, shell 7 etc., as shown in Figure 1.Running shaft 1 is arranged in shell 7, centrifugal seal part 2 is arranged on the lower end of running shaft 1, centrifugal seal ring 4 is arranged on the lower end of shell 7, oil storage ring 5 is provided with on the downside of centrifugal seal ring 4, end cap 6 is provided with in the downside of oil storage ring 5, between end cap 6 and centrifugal seal part 2, be provided with labyrinth seal 3, be formed centrally an annular space in surrounding by labyrinth seal 3, centrifugal seal ring 4, oil storage ring 5, end cap 6 and be accumulator 18.The center hole of centrifugal seal ring 4 is taper hole, and the miner diameter end 13 of taper hole is near the lower end of shell 7; The outside on centrifugal seal part 2 top is frustum, and matches with centrifugal seal ring 4.
As shown in Figure 2, the miner diameter end 13 of taper hole is near the lower end of shell 7.As shown in Figure 3, the upper end of centrifugal seal part 2 is taper, and miner diameter end 14 is arranged on the lower end of running shaft 1, and centrifugal seal part 2 leaves gap with the center taper hole of centrifugal seal ring 4, for passing through lubricant oil 12, centrifugal seal part 2 is connected with running shaft 1 by several screws 10.The taper bigger diameter end 15 of centrifugal seal part 2 is provided with some circular grooves 16, as shown in Figure 3.Labyrinth seal 3 is provided with the annular gear piece 17 with quantity such as circular grooves 16, as shown in Figure 4.Labyrinth seal 3 is arranged on the lower end of the taper bigger diameter end 15 of centrifugal seal part 2, and leaves certain gap between the two, and the annular gear piece 17 of labyrinth seal 3 forms labyrinth seal with the circular groove 16 of centrifugal seal part 2.Oil storage ring 5 is provided with several oil outlets 11, oil storage ring 5 is arranged on the lower end of centrifugal seal ring 4, end cap 6 is arranged on the lower end of oil storage ring 5, and end cap 6 is connected with centrifugal seal ring 4 by several screws 8 with oil storage ring 5, and labyrinth seal ring 3 is connected with end cap 6 by several screws 9.
When running shaft 1 turns round, centrifugal seal part 2 will rotate together, owing to leaving certain interval between centrifugal seal part 2 and labyrinth seal 3, therefore can not affect the rotating accuracy of running shaft 1.When fluid 12 to be flowed down the gap between centrifugal seal part 2 and centrifugal seal ring 4 by upper end, due to centrifugal seal ring 2 High Rotation Speed, under centrifugal action, fluid 12 will be dumped into accumulator 18, enter outside reclaim line by oil outlet 11.The labyrinth seal that labyrinth seal 3 and centrifugal seal part 2 form is flowed out preventing micro fluid in the gap between labyrinth seal 3 and centrifugal seal part 2, thus reaches sealing effect.

Claims (1)

1., for the centrifugal of vertical spindle and a labyrinth combination sealing arrangement, it is characterized in that this device comprises: running shaft (1), centrifugal seal part (2), labyrinth seal (3), centrifugal seal ring (4), oil storage ring (5), end cap (6), shell (7), running shaft (1) is arranged in shell (7), centrifugal seal part (2) is arranged on the lower end of running shaft (1), centrifugal seal ring (4) is arranged on the lower end of shell (7), oil storage ring (5) is provided with in centrifugal seal ring (4) downside, end cap (6) is provided with in the downside of oil storage ring (5), labyrinth seal (3) is provided with between end cap (6) and centrifugal seal part (2), by labyrinth seal (3), centrifugal seal ring (4), oil storage ring (5), be formed centrally an annular space during end cap (6) surrounds and be accumulator (18),
The center hole of centrifugal seal ring (4) is taper hole, and the miner diameter end (13) of taper hole is near the lower end of shell (7); The outside on centrifugal seal part (2) top is frustum, and matches with centrifugal seal ring (4);
Gap is left, for getting rid of into accumulator (18) by lubricant oil (12) between the frustum of centrifugal seal part (2) upper outside and the center taper hole of centrifugal seal ring (4);
The frustum bigger diameter end (15) of centrifugal seal part (2) is provided with some annular grooves (16), for forming labyrinth seal with the annular gear piece (17) of labyrinth seal (3).
CN201210281575.6A 2012-08-08 2012-08-08 Centrifugal and labyrinth combined sealing device for vertical main shaft Expired - Fee Related CN102818026B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210281575.6A CN102818026B (en) 2012-08-08 2012-08-08 Centrifugal and labyrinth combined sealing device for vertical main shaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210281575.6A CN102818026B (en) 2012-08-08 2012-08-08 Centrifugal and labyrinth combined sealing device for vertical main shaft

Publications (2)

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CN102818026A CN102818026A (en) 2012-12-12
CN102818026B true CN102818026B (en) 2015-04-15

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103939609B (en) * 2014-03-31 2016-05-11 珠海优特电力科技股份有限公司 Storage device is opened sealing mechanism and automatic condiment device automatically
DE102023002185A1 (en) * 2022-06-20 2023-12-21 Sew-Eurodrive Gmbh & Co Kg Gearbox with shaft and centrifugal disc

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0127485B1 (en) * 1983-05-31 1987-09-09 Kawasaki Steel Corporation Sealed multi-row roller bearing device for rolling mills
JPH074529A (en) * 1993-01-27 1995-01-10 Skf Mekan Ab Labyrinth seal device
JPH0771624A (en) * 1993-09-02 1995-03-17 Okuma Mach Works Ltd Seal for rotary unit

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH658707A5 (en) * 1982-11-05 1986-11-28 Inventio Ag TOUCH-FREE SEAL.
CN201265651Y (en) * 2008-07-25 2009-07-01 广东科达机电股份有限公司 Sealing device for mechanical rotating shaft
CN102022541B (en) * 2010-11-03 2013-01-02 中国科学院长春光学精密机械与物理研究所 A rotary dynamic sealing device for boat-carrying photoelectric equipment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0127485B1 (en) * 1983-05-31 1987-09-09 Kawasaki Steel Corporation Sealed multi-row roller bearing device for rolling mills
JPH074529A (en) * 1993-01-27 1995-01-10 Skf Mekan Ab Labyrinth seal device
JPH0771624A (en) * 1993-09-02 1995-03-17 Okuma Mach Works Ltd Seal for rotary unit

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