CN204922003U - Rubber bellows mechanical seal - Google Patents

Rubber bellows mechanical seal Download PDF

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Publication number
CN204922003U
CN204922003U CN201520726423.1U CN201520726423U CN204922003U CN 204922003 U CN204922003 U CN 204922003U CN 201520726423 U CN201520726423 U CN 201520726423U CN 204922003 U CN204922003 U CN 204922003U
Authority
CN
China
Prior art keywords
bellows
ring
spring
mechanical seal
rotating
Prior art date
Application number
CN201520726423.1U
Other languages
Chinese (zh)
Inventor
蒋敏
Original Assignee
宁波天工机械密封有限公司
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Filing date
Publication date
Application filed by 宁波天工机械密封有限公司 filed Critical 宁波天工机械密封有限公司
Priority to CN201520726423.1U priority Critical patent/CN204922003U/en
Application granted granted Critical
Publication of CN204922003U publication Critical patent/CN204922003U/en

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Abstract

The utility model provides a rubber bellows mechanical seal, establishes bellows (2), rotating ring (3), rotating seat (4), tight loop (5), spring (6) and spring holder (7) on rotation axis (1) including overlapping in proper order, the tight dress of close -fitting end of rotating ring (3) in the big footpath end (2.1) of bellows (2), rotating seat (4) and tight loop (5) tightly overlap on bellows (2) and the adjacent mutual joint of tip, spring (6) be circular cone coil spring, circular cone coil spring's big footpath end spacing on spring holder (7), circular cone coil spring act on on bellows (2). Rubber bellows mechanical seal has the advantage that axial dimensions is short, overall structure is compact.

Description

Rubber bellows mechanical seal

Technical field

The utility model relates to technical field of mechanical, specifically refers to a kind of rubber bellows mechanical seal.

Background technique

Mechanical seal, also known as end face seal, is mainly used in the sealing of running shaft of pump, reactor, compressor, hydraulic transmission and other similar devices.The form of mechanical seal has a variety of, wherein bellows type mechanical seal is comparatively common a kind of form, comprise moving ring assembly and static components, wherein moving ring assembly mainly comprises rotating ring, bellows, rotating seat, cylindrically coiled spring, fastening ring, the overall axial dimension of mechanical seal of this form is long, higher to axial requirements of installation space, enough axial installing spaces need be reserved when assembling assembling.

Model utility content

The technical problems to be solved in the utility model is, provides that a kind of axial dimension is short, the rubber bellows mechanical seal of compact overall structure.

For solving the problems of the technologies described above, the technological scheme that the utility model provides is: comprise sheathed bellows, rotating ring, rotating seat, fastening ring, spring and spring seat on the rotary shaft successively, the close-fitting end of described rotating ring is tightly packed in the bigger diameter end of bellows, described rotating seat and fastening ring are tightly placed in the mutual clamping in end on bellows and adjacent respectively, described spring is conical helical spring, the bigger diameter end of described conical helical spring is spacing on spring seat, and described conical helical spring acts on bellows.

Described conical helical spring acts on the outer corner of indent that bellows bigger diameter end and miner diameter end intersect.

Also packing ring is provided with between step surface in described rotating ring end and bellows bigger diameter end, this packing ring can increase the area of contact in bellows bigger diameter end between step surface and rotating ring end face, to increase the effect dynamics of bellows to rotating ring, also can increase the intensity of bellows simultaneously.

Described spring seat is made up of baffle ring and the back-up ring being arranged on baffle ring surrounding, and the bigger diameter end of described conical helical spring is tight against at the baffle ring inside lock place crossing with back-up ring, described baffle ring is circumferentially evenly equipped with the stiffening rib increasing spring seat rigidity.

Rubber bellows mechanical seal of the present utility model, by being equipped with of spring, bellows, rotating ring, rotating seat, fastening ring and spring seat, compared to existing technologies, the particularly setting of conical helical spring, effectively reduce the axial length of whole mechanical seal, overall structure closely, rationally.

Accompanying drawing explanation

Accompanying drawing is the sectional structure schematic diagram of rubber bellows mechanical seal of the present utility model.

Shown in the utility model figure: 1 running shaft, 2 bellowss, 2.1 bigger diameter ends, step surface in 2.11,2.2 miner diameter ends, 3 rotating rings, 4 rotating seats, 5 fastening rings, 6 springs, 7 spring seats, 7.1 baffle rings, 7.2 back-up rings, the outer corner of 8 indents, 9 packing rings, 10 inside locks, 11 stiffening ribs.

Embodiment

Below in conjunction with accompanying drawing, the utility model is described in further detail.

As shown in the figure, rubber bellows mechanical seal of the present utility model, comprises the bellows 2 be set in successively on running shaft 1, rotating ring 3, rotating seat 4, fastening ring 5, spring 6 and spring seat 7.

Unlike the prior art, the close-fitting end of described rotating ring 3 is tightly packed in the bigger diameter end 2.1 of bellows 2, namely the close-fitting end close-fitting of rotating ring 3 is in the large diameter hole of bellows 2 bigger diameter end 2.1, described rotating seat 4 and fastening ring 5 are tightly placed in the mutual clamping on bellows 2 and adjacent end respectively, described spring 6 is conical helical spring, the bigger diameter end of described conical helical spring is spacing on spring seat 7, and described conical helical spring acts on bellows 2.

In the present embodiment, bellows is provided with bigger diameter end and miner diameter end, rotating seat 4 is also provided with bigger diameter end and miner diameter end, and on the bigger diameter end of rotating seat and the miner diameter end bigger diameter end that is tightly placed in bellows respectively and miner diameter end, fastening ring is then tightly placed on the miner diameter end of bellows, and the edge of the miner diameter end of rotating seat becomes to be evenly distributed in multiple draw-in groove, fastening ring is then clamped on by the fixture block of end edge in the draw-in groove of rotating seat miner diameter end, thus realizes the mutual clamping of fastening ring and rotating seat end.Now, described conical helical spring acts on outer corner 8 place of indent that bellows 2 bigger diameter end 2.1 and miner diameter end 2.2 intersect, and being outer corner 8 place of indent making conical helical spring act on bellows 2 bigger diameter end 2.1 and miner diameter end 2.2 to intersect, the miner diameter end of conical helical spring is then tight against the outer corner of indent of intersecting at bigger diameter end and the miner diameter end of rotating seat 4.

Also be provided with packing ring 9 between step surface 2.11 in described rotating ring 3 end and bellows 2 bigger diameter end 2.1, packing ring compares bellows, good rigidly, and intensity is good.

Described spring seat 7 is made up of baffle ring 7.1 and the back-up ring 7.2 being arranged on baffle ring 7.1 surrounding, the bigger diameter end of described conical helical spring is tight against at baffle ring 7.1 inside lock 10 place crossing with back-up ring 7.2, described baffle ring 7.1 is circumferentially evenly equipped with the stiffening rib 11 increasing spring seat 7 rigidity.

Rubber bellows mechanical seal of the present utility model adopts conical helical spring as elastic member, cylindrically coiled spring compared to existing technology, overall axial length can significantly reduce, under spring seat, rubber corrugated pipe, rotating seat and fastening ring equipped is arranged, can form that axial length is short, the rational rubber bellows mechanical seal of compact structure, and in seal process, conical helical spring two ends are tight against corner, good positioning effect, not easily there is play, shifting phenomena, the effective guarantee reliability of whole mechanical seal.

Claims (4)

1. a rubber bellows mechanical seal, comprise the bellows (2) be set in successively on running shaft (1), rotating ring (3), rotating seat (4), fastening ring (5), spring (6) and spring seat (7), it is characterized in that: the close-fitting end of described rotating ring (3) is tightly packed in the bigger diameter end (2.1) of bellows (2), described rotating seat (4) and fastening ring (5) are tightly placed in bellows (2) and go up and the mutual clamping in adjacent end, described spring (6) is conical helical spring, the bigger diameter end of described conical helical spring is spacing on spring seat (7), described conical helical spring acts on bellows (2).
2. rubber bellows mechanical seal according to claim 1, is characterized in that: described conical helical spring acts on outer corner (8) place of indent that bellows (2) bigger diameter end (2.1) and miner diameter end (2.2) intersect.
3. rubber bellows mechanical seal according to claim 1, is characterized in that: be also provided with packing ring (9) between described rotating ring (3) end and bellows (2) bigger diameter end (2.1) interior step surface (2.11).
4. rubber bellows mechanical seal according to claim 2, it is characterized in that: described spring seat (7) is made up of baffle ring (7.1) and the back-up ring (7.2) that is arranged on baffle ring (7.1) surrounding, the bigger diameter end of described conical helical spring is tight against at baffle ring (7.1) inside lock (10) place crossing with back-up ring (7.2), described baffle ring (7.1) is circumferentially evenly equipped with the stiffening rib (11) increasing spring seat (7) rigidity.
CN201520726423.1U 2015-09-18 2015-09-18 Rubber bellows mechanical seal CN204922003U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520726423.1U CN204922003U (en) 2015-09-18 2015-09-18 Rubber bellows mechanical seal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520726423.1U CN204922003U (en) 2015-09-18 2015-09-18 Rubber bellows mechanical seal

Publications (1)

Publication Number Publication Date
CN204922003U true CN204922003U (en) 2015-12-30

Family

ID=54971132

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520726423.1U CN204922003U (en) 2015-09-18 2015-09-18 Rubber bellows mechanical seal

Country Status (1)

Country Link
CN (1) CN204922003U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107654653A (en) * 2017-09-15 2018-02-02 浙江鲁溪密封件有限公司 A kind of mechanically-sealing apparatus
CN109844381A (en) * 2016-07-12 2019-06-04 约翰起重机有限公司 Not folding flexible sealing diaphragm and seal assembly for rotary shaft equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109844381A (en) * 2016-07-12 2019-06-04 约翰起重机有限公司 Not folding flexible sealing diaphragm and seal assembly for rotary shaft equipment
CN107654653A (en) * 2017-09-15 2018-02-02 浙江鲁溪密封件有限公司 A kind of mechanically-sealing apparatus

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