CN106499821A - A kind of mechanical sealing device of silicon carbide - Google Patents
A kind of mechanical sealing device of silicon carbide Download PDFInfo
- Publication number
- CN106499821A CN106499821A CN201510561855.6A CN201510561855A CN106499821A CN 106499821 A CN106499821 A CN 106499821A CN 201510561855 A CN201510561855 A CN 201510561855A CN 106499821 A CN106499821 A CN 106499821A
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- Prior art keywords
- axle sleeve
- rotating ring
- ring
- gland
- spring base
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Abstract
The invention discloses a kind of mechanical sealing device of silicon carbide, including driving ring (1), gland (2), stationary ring (3), rotating ring (4), spring (5) and axle sleeve (6), the one end of axle sleeve (6) is located in a stomidium of driving ring (1) and fixed, spring base (8) is provided between the outer wall of the inwall of gland (2) and axle sleeve (6), spring base (8) are circumferential with gland (2) spacing, gap is provided between the outer wall of the inwall of spring base (8) and axle sleeve (6) and is provided between the two seal both sealing gaskets (9), axle sleeve (6) are spacing with rotating ring (4) circumferential and axial, the other end end of axle sleeve (6) is provided with bearing block (10).It is few that the mechanically-sealing apparatus greatly shorten mechanical seal axial direction length, number of parts, low cost, avoids the improper movement of rotating ring, so that rotating ring avoids separating with sealing gasket, it is ensured that sealing effectiveness.
Description
Technical field
The present invention relates to technical field of mechanical, is especially a kind of mechanical sealing device of silicon carbide.
Background technology
Existing a mechanically-sealing apparatus, including stationary ring, rotating ring, rotating seat, gland, spring, spring base and axle sleeve, the stationary ring is fixed on a section of gland, the gland is located at outside axle sleeve, stationary ring set is provided between the stationary ring and axle sleeve, the rotating ring is fixed on one end of rotating seat, the seal face of the rotating ring is close together under the action of the spring with the seal face of stationary ring, the rotating seat is located at outside axle sleeve, the spring is located at outside axle sleeve, one end of the spring is offseted with rotating seat, the other end is offseted with the spring base being fixed on outside axle sleeve, sealing ring is provided between the inner bottom surface of the other end and rotating seat of the rotating ring, sealing ring is provided between the inwall of the outer wall and gland of the stationary ring.
Moving ring assembly in this mechanism is rotated with the rotation of axle, and stationary ring forms sealing flour milling with rotating ring, is sealed, it is to avoid extraneous working media leaks into inside.
The mechanically-sealing apparatus of above prior art have the following disadvantages：L, as stationary ring and rotating ring are realized being close to by conventional helical spring, due to needing to provide enough elastic force, so make spring need enough length, the axial length so as to cause whole mechanical seal is longer；2nd, as spring is the outside that is located at stationary ring, need spring base to carry out support spring, and spring directly can not be contacted with rotating ring, but need to increase a rotating seat, so there are spring base, rotating seat to increased the axial length of whole mechanical seal, and number of parts is more, high cost.
Also there are the mechanically-sealing apparatus for replacing helical spring using wavy spring at present, while eliminating original rotating seat and spring base, so to some extent solve the larger problem of mechanical seal axial direction length, but yet suffer from following shortcoming：After eliminating original rotating seat and spring base, rotating ring is moved to static components under the pressure of medium and is compressed, and is moved and is extruded wavy spring, so that rotating ring is separated with sealing gasket after reaching certain thrust pusher dynamic and static ring, and seal failure is made, cause whole mechanical seal failure.
Content of the invention
The technical problem to be solved is to provide one kind, and to greatly shorten mechanical seal axial direction length, number of parts few, low cost, avoids the improper movement of rotating ring, so that rotating ring avoids separating with sealing gasket, it is ensured that the mechanical sealing device of silicon carbide of sealing effectiveness.
Technical scheme to be solved by this invention is, a kind of mechanical sealing device of silicon carbide with following structure for providing, including driving ring, gland, stationary ring, rotating ring, spring and axle sleeve, one end of the axle sleeve is located in a stomidium of driving ring and fixed, the gland is located at outside axle sleeve, pad is provided between one end end face and the step surface of driving ring of the gland, spring base is provided between the outer wall of the inwall and axle sleeve of the gland, the spring base is circumferentially spacing with gland, gap is provided between the outer wall of the inwall and axle sleeve of the spring base, the stationary ring is located at outside axle sleeve, gap is provided between the outer wall of the inwall and axle sleeve of the stationary ring, the spring is wavy spring；The spring is located at the upper of spring base, and one end is offseted with the step surface of spring base, the other end is offseted with the end face of stationary ring, the seal face of the stationary ring is close to the seal face of rotating ring, the rotating ring is located at outside axle sleeve, and is provided with sealing both sealing gaskets between the two, and the other end of the axle sleeve is provided with the annular flange for wrapping outward and by rotating ring, the axle sleeve is spacing with rotating ring circumferential and axial, and the other end end of the axle sleeve is provided with bearing block.
The axle sleeve is circumferentially spacing with rotating ring to be referred to, the outer wall of the rotating ring is provided with several pits, and the inwall of the annular flange of the axle sleeve is provided with the projection that mutually can be embedded in one by one with pit.
The axle sleeve referred to rotating ring axial limiting, and one section of the outer wall of the rotating ring is taper seat, the end of the annular flange of the axle sleeve be provided with the taper seat of being close to rotating ring to annular bending edges.
The sealing gasket is in stepped ramp type, the inwall of the cylindrical section of the sealing gasket and the outer wall close-fitting of axle sleeve, the outer wall of the cylindrical section of the sealing gasket and the inwall close-fitting of rotating ring, the inner face of the step of the sealing gasket is close to the end face of rotating ring, and the outer face of the step of the sealing gasket is close to the inner face of the annular flange of axle sleeve.
The spring base is circumferentially spacing with gland to be referred to, the side wall of the spring base is provided with a breach, and positioned at the fixture block of a bending on the spring base in breach, the endoporus step end face of the gland is provided with the hole embedded for fixture block.
After using above structure, a kind of mechanical sealing device of silicon carbide of the invention compared with prior art, with advantages below：As the spring is wavy spring；The spring is located at the upper of spring base, and one end is offseted with the step surface of spring base, and the other end is offseted with the end face of stationary ring, by the layout again of wavy spring, can so greatly shorten mechanical seal axial direction length；Reduce rotating seat simultaneously, reduce amount of parts；Again as the rotating ring is located at outside axle sleeve, and be provided between the two sealing both sealing gaskets, the other end of the axle sleeve is provided with the annular flange for wrapping outward and by rotating ring, the axle sleeve is spacing with rotating ring circumferential and axial, so rotating ring is carried out spacing after, rotating ring is avoided to move to static components under the pressure of medium and compress, move after reaching certain thrust pusher dynamic and static ring and do not extrude wavy spring, so that rotating ring is close to all the time with sealing gasket, and ensure that sealing is not failed, and causes the sealing of whole mechanical seal.Pad is provided between one end end face and the step surface of driving ring of the gland, and such driving ring makes pad cushioning effect be prayed between the driving ring and static gland for rotating when rotating, and prevents driving ring from directly going gland to contact.Again as the other end end of the axle sleeve is provided with bearing block, after using bearing is installed, it is to avoid the outer face of axle sleeve and bearing directly contact and wear and tear.
As improvement, the axle sleeve is circumferentially spacing with rotating ring to be referred to, the outer wall of the rotating ring is provided with several pits, and the inwall of the annular flange of the axle sleeve is provided with the projection that mutually can be embedded in one by one with pit, and processing is simple, in the exterior line processing pit of rotating ring, assembled, the annular flange punching press to axle sleeve is that the projection of depression is embedded in pit and can just realize, so process simply, and good limit effect.
As improvement, the axle sleeve is referred to rotating ring axial limiting, one section of the outer wall of the rotating ring is taper seat, the end of the annular flange of the axle sleeve be provided with the taper seat of being close to rotating ring to annular bending edges, parcel effect is good, and anti-locating snap ring is axially and mobile, and eliminate original rotating seat, saving parts, reduces cost, and easy to assembly.
As improvement, the sealing gasket is in stepped ramp type. the outer wall close-fitting of the inwall of the cylindrical section of the sealing gasket and axle sleeve, the outer wall of the cylindrical section of the sealing gasket and the inwall close-fitting of rotating ring, the inner face of the step of the sealing gasket is close to the end face of rotating ring, it is close to the inner face of the annular flange of axle sleeve the outer face of the step of the sealing gasket, so sealing gasket can make simultaneously between rotating ring and axle sleeve axially and radially between sealing, save original need individually between moving sealing ring and axle sleeve axially and radially, reduce part, reduces cost and installation time.
As improvement, the spring base is circumferentially spacing with gland to be referred to, the side wall of the spring base is provided with a breach, it is located at the fixture block of a bending on the spring base in breach, the endoporus step end face of the gland is provided with the hole embedded for fixture block, so circumferential spacing convenience, it is to avoid the circumference again with other bearing pin is spacing, reduce part, reduces cost and installation time.
Description of the drawings
Fig. 1 is a kind of structural representation of mechanical sealing device of silicon carbide of the present invention.
In figure：L, driving ring, 2, gland, 3, stationary ring, 4, rotating ring, 5, spring, 6, axle sleeve, 7, pad, 8, spring base, 9, sealing gasket, 10, bearing block.
Specific embodiment
As shown in Figure l, a kind of mechanical sealing device of silicon carbide that the present invention is provided, including driving ring l, gland 2, stationary ring 3, rotating ring 4, spring 5 and axle sleeve 6, it is characterised in that：One end of the axle sleeve 6 is located in a stomidium of driving ring l and fixed, the gland 2 is located at outside axle sleeve 6, pad 7 is provided between one end end face and the step surface of driving ring l of the gland 2, spring base 8 is provided between the outer wall of the inwall of the gland 2 and axle sleeve 6, the spring base 8 is circumferential with gland 2 spacing, gap is provided between the outer wall of the inwall of the spring base 8 and axle sleeve 6, the stationary ring 3 is located at outside axle sleeve 6, gap is provided between the outer wall of the inwall of the stationary ring 3 and axle sleeve 6, the spring 5 is wavy spring；The spring 5 is located at the upper of spring base 8, and one end is offseted with the step surface of spring base 8, the other end is offseted with the end face of stationary ring 3, the seal face of the stationary ring 3 is close to the seal face of rotating ring 4, the rotating ring 4 is located at outside axle sleeve 6, and is provided with sealing both sealing gaskets 9 between the two, and the other end of the axle sleeve 6 is provided with the annular flange for wrapping outward and by rotating ring 4, the axle sleeve 6 is spacing with 4 circumferential and axial of rotating ring, and the other end end of the axle sleeve 6 is provided with bearing block 10.
The axle sleeve 6 is circumferentially spacing with rotating ring 4 to be referred to, the outer wall of the rotating ring 4 is provided with several pits, and the inwall of the annular flange of the axle sleeve 6 is provided with the projection that mutually can be embedded in one by one with pit, and in assembling, each projection is embedded in corresponding pit 4.1.
The axle sleeve 6 is referred to 4 axial limiting of rotating ring, one section of the outer wall of the rotating ring 4 is taper seat, the end of the annular flange of the axle sleeve 6 be provided with the taper seat of being close to rotating ring 4 to annular bending edges, namely the end of annular flange is provided with inside interior necking, so as to wrap one end of rotating ring 4.
The sealing gasket 9 is in stepped ramp type, the inwall of the cylindrical section of the sealing gasket 9 and the outer wall close-fitting of axle sleeve 6, the outer wall of the cylindrical section of the sealing gasket 9 and the inwall close-fitting of rotating ring 4, the inner face of the step of the sealing gasket 9 is close to the end face of rotating ring 4, and the outer face of the step of the sealing gasket 9 is close to the inner face of the annular flange of axle sleeve 6.
The spring base 8 is circumferentially spacing with gland 2 to be referred to, the side wall of the spring base 8 is provided with a breach, the fixture block of a bending on the spring base 8 in breach, and the endoporus step end face of the gland 2 is provided with the hole embedded for fixture block.
Claims (5)
1. a kind of mechanical sealing device of silicon carbide, including driving ring (1), gland (2), stationary ring (3), rotating ring (4), spring (5) and axle sleeve (6), it is characterised in that：The one end of axle sleeve (6) is located in a stomidium of driving ring (1) and fixed, gland (2) are located at axle sleeve (6) outward, pad (7) is provided between the step surface of one end end face of gland (2) and driving ring (1), spring base (8) is provided between the outer wall of the inwall of gland (2) and axle sleeve (6), spring base (8) are circumferential with gland (2) spacing, gap is provided between the outer wall of the inwall of spring base (8) and axle sleeve (6), stationary ring (3) are located at axle sleeve (6) outward, gap is provided between the outer wall of the inwall of stationary ring (3) and axle sleeve (6), described spring (5) are wavy spring；Spring (5) are located at the upper of spring base (8), and one end is offseted with the step surface of spring base (8), the other end is offseted with the end face of stationary ring (3), the seal face of stationary ring (3) is close to the seal face of rotating ring (4), rotating ring (4) are located at axle sleeve (6) outward, and be provided between the two sealing both sealing gaskets (9), the other end of axle sleeve (6) is provided with the annular flange for wrapping outward and by rotating ring (4), axle sleeve (6) are spacing with rotating ring (4) circumferential and axial, the other end end of axle sleeve (6) is provided with bearing block (10).
2. the mechanical sealing device of silicon carbide according to claim l, it is characterised in that：Axle sleeve (6) are circumferentially spacing with rotating ring (4) to be referred to, the outer wall of rotating ring (4) is provided with several pits, and the inwall of the annular flange of axle sleeve (6) is provided with the projection that mutually can be embedded in one by one with pit.
3. the mechanical sealing device of silicon carbide according to claim l, it is characterised in that：Axle sleeve (6) are referred to rotating ring (4) axial limiting, one section of the outer wall of rotating ring (4) is taper seat, the end of the annular flange (6.1) of axle sleeve (6) be provided with the taper seat of being close to rotating ring (4) to annular bending edges.
4. the mechanical sealing device of silicon carbide according to claim l, it is characterised in that：Described sealing gasket (9) are in stepped ramp type, the inwall of the cylindrical section of sealing gasket (9) and the outer wall close-fitting of axle sleeve (6), the outer wall of the cylindrical section of sealing gasket (9) and the inwall close-fitting of rotating ring (4), the inner face of the step of sealing gasket (9) is close to the end face of rotating ring (4), and the outer face of the step of sealing gasket (9) is close to the inner face of the annular flange of axle sleeve (6).
5. the mechanical sealing device of silicon carbide according to claim l, it is characterised in that：Spring base (8) are circumferentially spacing with gland (2) to be referred to, the side wall of spring base (8) is provided with a breach, the fixture block of the upper bending of spring base (8) being located in breach, the endoporus step end face of gland (2) are provided with the hole embedded for fixture block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510561855.6A CN106499821A (en) | 2015-09-07 | 2015-09-07 | A kind of mechanical sealing device of silicon carbide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510561855.6A CN106499821A (en) | 2015-09-07 | 2015-09-07 | A kind of mechanical sealing device of silicon carbide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106499821A true CN106499821A (en) | 2017-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510561855.6A Pending CN106499821A (en) | 2015-09-07 | 2015-09-07 | A kind of mechanical sealing device of silicon carbide |
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| Country | Link |
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| CN (1) | CN106499821A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454237A (en) * | 2019-08-28 | 2019-11-15 | 天津大学 | A kind of supercritical carbon dioxide turbo-expander multistage carbocyclic ring labyrinth seal structure |
-
2015
- 2015-09-07 CN CN201510561855.6A patent/CN106499821A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454237A (en) * | 2019-08-28 | 2019-11-15 | 天津大学 | A kind of supercritical carbon dioxide turbo-expander multistage carbocyclic ring labyrinth seal structure |
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Application publication date: 20170315 |