CN203856760U - Single end surface mechanical sealing structure - Google Patents
Single end surface mechanical sealing structure Download PDFInfo
- Publication number
- CN203856760U CN203856760U CN201420193288.4U CN201420193288U CN203856760U CN 203856760 U CN203856760 U CN 203856760U CN 201420193288 U CN201420193288 U CN 201420193288U CN 203856760 U CN203856760 U CN 203856760U
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- China
- Prior art keywords
- spring
- ring
- impeller
- axle sleeve
- spring seat
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- Expired - Fee Related
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- Mechanical Sealing (AREA)
Abstract
The utility model discloses a single end surface mechanical sealing structure, comprising an impeller, a shaft, a shaft sleeve, a movable ring, a static ring, a mechanical sealing chamber and a spring; the impeller sleeves the shaft; the shaft sleeve is additionally arranged on the hub of the impeller; the right end of the shaft sleeve radially and internally sleeves the movable ring; the movable ring radially and internally sleeves the impeller; the static ring internally sleeves the mechanical sealing chamber; the right end of the static ring is connected with a spring seat; the right part of the spring seat is a U-shaped slot; a spring press plate at the right side of the spring seat is fixed on the mechanical sealing chamber; the spring press plate is provided with a positioning pin which is inserted into the U-shaped slot of the spring seat; the springs are radially and uniformly distributed in the U-shaped slot, apply axial elasticity and are supported between the spring seat and the spring press plate. The coaxiality of the movable ring, the static ring and the shaft as well as the perpendicularity of a friction pair and the shaft are ensured, deviated friction is avoided, the sealing reliability is improved by using the springs and the shaft sleeve and the service life of a mechanical seal is prolonged.
Description
Technical field
The utility model relates to the mechanical seal device of pump, relates in particular to a kind of single mechanical end face seal structure.
Background technique
Mechanical seal for pump refers to that installation and operation plays the device of dynamic sealing action in pump apparatus, avoids the flowing medium in water pump spiral casing to flow out a kind of parts outside water pump by pump shaft; Because water pump mostly is conveying flowing medium, there is the features such as level installation, high rotating speed, high pressure, band solid particle, corrosivity be strong, so mechanical seal for pump main material often needs to resist the impact of washing away the unfavorable factors such as shock, sealing surface high temperature abrasion that high rotating speed brings, seal parameters that high pressure is brought is unstable, base structure part is corroded of solid particle.
The rotating ring of existing mechanical seal for pump is contained on impeller hub, generally the radial clearance in mechanical sealing linkage ring and impeller hub hole is 0.5mm: axially above by O RunddichtringO, seal, the perpendicularity of rotating ring friction pair and shaft axis in the time of so just can not guaranteeing to assemble, in this structure, by 2 driving pins on impeller, drive rotating ring to rotate, in pump startup or docking process, machine envelope rotating ring all can be subject to the impact force of driving pin, and long-term rear machine envelope rotating ring will fatigue ruption.
What existing single-end surface machine sealing adopted is that a big spring is enclosed within on main shaft, the axial end of big spring cannot be accomplished very smooth, thereby the power of spring action on stationary ring is inhomogeneous, while big spring in running is subject to the effect of centrifugal force, easily there is eccentric wear phenomenon in rotating ring and stationary ring friction pair, in pump docking process, machine envelope just there will be leakage phenomenon; And when the conveying easily-crystallized medium of pump, the spring of machine envelope easily lost efficacy, reason is that crystallization medium leaks in machine envelope pump shaft cavity, because machine envelope is not with sparge water, crystallization medium to be attached on big spring big spring was lost efficacy.
Generally speaking, existing mechanical seal for pump cannot guarantee rotating ring and the stable running state of stationary ring, easily occurs the phenomenon of eccentric wear, and sealing is not good, easily occurs that spring failure causes mechanical seal normally to work.
Model utility content
The technical assignment of technical problem to be solved in the utility model and proposition is that prior art is improved, a kind of single mechanical end face seal structure is provided, easily there is eccentric wear phenomenon in the single mechanical end face seal structure solving in current technology, the problem that sealing is poor.
For solving above technical problem, the technical solution of the utility model is:
A kind of single mechanical end face seal structure, comprise impeller, axle, axle sleeve, rotating ring, stationary ring, sealing chamber and spring, it is characterized in that, described impeller set is contained on axle, on the wheel hub of impeller, add axle sleeve, axle sleeve carries out axially locating and locking by locking nut, the right-hand member of axle sleeve is enclosed within on rotating ring in radially, rotating ring is enclosed within on impeller in radially again, and between impeller and axle sleeve, be provided with driving pin I, between impeller and rotating ring, be provided with driving pin II, in stationary ring, be enclosed within sealing chamber, the right-hand member of stationary ring is connecting spring seat, the right part of spring seat is U-shaped groove, on the right side of spring seat, spring bearer plate is fixed in sealing chamber, on spring bearer plate, device has locating stud to be inserted in the U-shaped groove of spring seat, and in U-shaped groove, be radially evenly distributed with spring apply axial resilient support at spring seat between spring bearer plate.The utility model installs axle sleeve on the wheel hub of impeller, utilize axle sleeve to reach good sealing effect, prevent that each parts are corroded, rotating ring is arranged on impeller simultaneously, its axially and radial location by the seam step on wheel hub and the radial end face of axle sleeve, both there will not be the appearance of machine envelope rotating ring end face eccentric wear phenomenon in conjunction with guaranteeing that rotating ring assembles rear and the coaxality of axle and the perpendicularity of rotating ring friction pair and axle.The spring of the stationary ring application of force is changed into little spring structure from the big spring being originally enclosed within main shaft, in radial direction, be evenly distributed with several springs, guarantee the stressed uniformity of stationary ring end face, the eccentric wear phenomenon of avoiding the out-of-flatness due to big spring end face on former main shaft to cause.Rotating ring and stationary ring all keep good coaxality, deflection can not occur in the course of the work, guarantee the perpendicularity of rotating ring and stationary ring friction pair and axle, thereby guarantee that mechanical seal normally works, and improve the serviceability of mechanical seal.
Further, between described axle sleeve and rotating ring, device has seal ring I, and between rotating ring and impeller, device has seal ring II, utilizes seal ring I and seal ring II to guarantee that rotating ring there will not be the situation of skidding in rotary course again.
Further, between described stationary ring and sealing chamber, also arranging device has two seal ring III to improve sealings, guarantees that the parts such as spring can not be corroded etc.
Further, described seal ring I, seal ring II and seal ring III adopt O RunddichtringO, simple in structure, and good seal performance is convenient to safeguard and is changed.
Further; returning apparatus spring axle sleeve on described stationary ring; spring axle sleeve inner sleeve is on spring seat aperture surface; utilize spring axle sleeve to improve the sealing at place, spring place; in pump operation process, micro-aggressive medium leaking of machine envelope can not erode to spring; reveal medium and be directly rejected to outside machine envelope, avoid the pollution springs such as crystal to cause spring failure, guarantee that mechanical seal can long-acting normal work.
Further, described spring bearer plate is fixed in sealing chamber by adjusting screw, and and between sealing chamber, maintain axial clearance, and utilize adjusting screw can regulate easily the pressure being applied on friction pair, be convenient in use for some time the replacing of spring.
Compared with prior art, the utility model advantage is:
Single mechanical end face seal structure described in the utility model is utilized fixedly rotating ring of axle sleeve and impeller combination, guarantee that rotating ring assembles rear and the coaxality of axle and the perpendicularity of rotating ring friction pair and axle, utilize radially equally distributed spring to apply uniform active force to stationary ring simultaneously, the coaxality that guarantees stationary ring and axle with and the perpendicularity of friction pair and axle, guarantee that mechanical seal there will not be the phenomenon of eccentric wear in the course of the work, utilize spring axle sleeve to improve the sealing reliability at stationary ring place, adopt spring bearer plate to guarantee the using effect of spring, the working life of prolongation machine envelope, the utility model is simple in structure simultaneously, is easy to manufacture, and overall economic efficiency is high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technological scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiments.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment who obtains under creative work prerequisite, all belong to the scope of the utility model protection.
The disclosed a kind of single mechanical end face seal structure of the utility model embodiment, makes the suffered active force of rotating ring and stationary ring balanced, guarantees that the friction pair of rotating ring and stationary ring, all the time perpendicular to shaft axis, improves sealing, the working life of prolonged mechanical sealing.
As shown in Figure 1, a kind of single mechanical end face seal structure, comprise impeller 1, axle 2, axle sleeve 3, rotating ring 4, stationary ring 5, sealing chamber 6 and spring 7, impeller 1 is sleeved on axle 2, on the wheel hub of impeller 1, add axle sleeve 3, axle sleeve 3 carries out axially locating and locking by locking nut 8, the right-hand member of axle sleeve 3 is enclosed within on rotating ring 4 in radially, rotating ring 4 is enclosed within on impeller 1 in radially again, on impeller 1, the installation place of rotating ring 4 is provided with seam step, and impeller 1 and axle sleeve 3 are in conjunction with guaranteeing that rotating ring 4 assembles rear and the coaxality of axle and the perpendicularity of rotating ring friction pair and axle.And be provided with driving pin I9 between impeller 1 and axle sleeve 3, between impeller 1 and rotating ring 4, be provided with driving pin II10 and guarantee rotating ring 4 rotations, between axle sleeve 3 and rotating ring 4, device has seal ring I14, between rotating ring 4 and impeller 1, device has seal ring II15 to guarantee that rotating ring 4 there will not be the situation of skidding in rotary course, and seal ring I14 and seal ring II15 adopt O RunddichtringO.
In stationary ring 5, be enclosed within sealing chamber 6, between stationary ring 5 and sealing chamber 6, also arranging device has two seal ring III16 to guarantee the reliability of sealing, and seal ring III16 adopts O RunddichtringO.The right-hand member of stationary ring 5 is connecting spring seat 11, the right part of spring seat 11 is U-shaped groove, at the right side of spring seat 11 spring bearer plate 12, be fixed in sealing chamber 6, on spring bearer plate 12, device has locating stud 13 to be inserted in the U-shaped groove of spring seat 11, and in U-shaped groove, be radially evenly distributed with the axial resilient support of spring 7 effect at spring seat 11 between spring bearer plate 12, at least need 3 springs 7 to guarantee active force at grade, guarantee the stressed uniformity of stationary ring end face, avoid occurring eccentric wear phenomenon.
Returning apparatus spring axle sleeve 17 on stationary ring 5, is placed in spring axle sleeve 17 on spring seat 11 aperture surfaces.In pump operation process, micro-aggressive medium leaking of machine envelope can not erode to spring, reveals medium and is directly rejected to outside machine envelope.
Spring bearer plate 12 is fixed in sealing chamber 6 by adjusting screw 18, and and sealing chamber 6 between maintain axial clearance, be convenient to be applied to the adjusting of the power on friction pair, the replacing of spring 7 is very convenient in use for some time.
Below be only preferred implementation of the present utility model, it should be pointed out that above-mentioned preferred implementation should not be considered as restriction of the present utility model, protection domain of the present utility model should be as the criterion with claim limited range.For those skilled in the art, within not departing from spirit and scope of the present utility model, can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (6)
1. a single mechanical end face seal structure, comprise impeller (1), axle (2), axle sleeve (3), rotating ring (4), stationary ring (5), sealing chamber (6) and spring (7), it is characterized in that, described impeller (1) is sleeved on axle (2), on the wheel hub of impeller (1), add axle sleeve (3), axle sleeve (3) carries out axially locating and locking by locking nut (8), the right-hand member of axle sleeve (3) is enclosed within on rotating ring (4) in radially, rotating ring (4) is enclosed within on impeller (1) in radially again, and between impeller (1) and axle sleeve (3), be provided with driving pin I(9), between impeller (1) and rotating ring (4), be provided with driving pin II(10), in stationary ring (5), be enclosed within sealing chamber (6), the right-hand member of stationary ring (5) is connecting spring seat (11), the right part of spring seat (11) is U-shaped groove, right side spring bearer plate (12) at spring seat (11) is fixed in sealing chamber (6), the upper device of spring bearer plate (12) has locating stud (13) to be inserted in the U-shaped groove of spring seat (11), and in U-shaped groove, be radially evenly distributed with spring (7) apply axial resilient support at spring seat (11) between spring bearer plate (12).
2. single mechanical end face seal structure according to claim 1, is characterized in that, between described axle sleeve (3) and rotating ring (4), device has seal ring I(14), between rotating ring (4) and impeller (1), device has seal ring II(15).
3. single mechanical end face seal structure according to claim 1, is characterized in that, between described stationary ring (5) and sealing chamber (6), also arranging device has two seal ring III(16).
4. single mechanical end face seal structure according to claim 3, is characterized in that, described seal ring I(14), seal ring II(15) and seal ring III(16) adopt O RunddichtringO.
5. single mechanical end face seal structure according to claim 3, is characterized in that, the upper returning apparatus spring axle sleeve (17) of described stationary ring (5), is placed in spring axle sleeve (17) on spring seat (11) aperture surface.
6. single mechanical end face seal structure according to claim 1, is characterized in that, it is upper that described spring bearer plate (12) is fixed on sealing chamber (6) by adjusting screw (18), and and sealing chamber (6) between maintain axial clearance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420193288.4U CN203856760U (en) | 2014-04-18 | 2014-04-18 | Single end surface mechanical sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420193288.4U CN203856760U (en) | 2014-04-18 | 2014-04-18 | Single end surface mechanical sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203856760U true CN203856760U (en) | 2014-10-01 |
Family
ID=51606614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420193288.4U Expired - Fee Related CN203856760U (en) | 2014-04-18 | 2014-04-18 | Single end surface mechanical sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203856760U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139494A (en) * | 2018-11-14 | 2019-01-04 | 南京腾图节能科技有限公司 | A kind of New type water pump |
-
2014
- 2014-04-18 CN CN201420193288.4U patent/CN203856760U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139494A (en) * | 2018-11-14 | 2019-01-04 | 南京腾图节能科技有限公司 | A kind of New type water pump |
| CN109139494B (en) * | 2018-11-14 | 2024-01-19 | 南京腾图节能科技有限公司 | Novel water pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141001 Termination date: 20150418 |
|
| EXPY | Termination of patent right or utility model |