CN209621706U - Impeller seals mechanism and centrifugal pump - Google Patents
Impeller seals mechanism and centrifugal pump Download PDFInfo
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- CN209621706U CN209621706U CN201920424738.9U CN201920424738U CN209621706U CN 209621706 U CN209621706 U CN 209621706U CN 201920424738 U CN201920424738 U CN 201920424738U CN 209621706 U CN209621706 U CN 209621706U
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- impeller
- bellows
- static seal
- ring
- seal component
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- 230000007246 mechanism Effects 0.000 title claims abstract description 31
- 238000007789 sealing Methods 0.000 claims abstract description 97
- 230000003068 static effect Effects 0.000 claims abstract description 57
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- 229910045601 alloy Inorganic materials 0.000 claims description 4
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- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 4
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
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- 230000009471 action Effects 0.000 description 3
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- 238000005119 centrifugation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
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Abstract
The utility model relates to fluid machinery technology technical fields, more particularly, to a kind of impeller seals mechanism and centrifugal pump；Impeller seals mechanism includes impeller, pump cover, dynamic sealing assembly and static seal component；Setting sealing extension on impeller；Dynamic sealing assembly includes rotating ring, bellows and elastic component, and bellows-sheathed is set to the outside of sealing extension, and elastic component is set in the outside of bellows, and the turn-up portion at the both ends and bellows both ends of elastic component leans, and rotating ring is located at bellows towards one end of pump cover；Pump cover inner surface is provided with stepped part, and static seal component is fixedly installed in the stepped part；When pump cover and centrifugal pump main body are installed, dynamic sealing assembly can be mutually sealed against with static seal component, to realize the sealing between impeller and pump cover, liquid at outlet of centrifugal pump will not gap between front shroud of impeller and pump cover by the entrance of resorption or back pressure to centrifugal pump, to effectively improve the working efficiency and performance of centrifugal pump.
Description
Technical field
The utility model relates to fluid machinery technology technical fields, more particularly, to a kind of impeller seals mechanism and centrifugation
Pump.
Background technique
Current centrifugal pump is widely used in every field, in the prior art the structure of most of centrifugal pump as shown in Figure 1,
Impeller 1 ' is fixed on motor shaft end, electric machine main shaft rotor and shell and is rotatablely connected by bearing, and main shaft can occur when motor operates
Play axially and radially, impeller and the pump housing occur friction and generate unnecessary harm in order to prevent, impeller 1 ' and pump cover 2 '
Between it is either axial or it is radial all there are biggish spaces, and have the gap and just have leakage, outlet of centrifugal pump and entrance
Pressure difference is bigger, and amount of leakage is also more, the big quantity of fluid at outlet by the suction inlet of resorption or back pressure to centrifugal pump, cause from
The discharge capacity of heart pump is reduced, and the pressure at centrifugation pump discharge end also decreases naturally, to greatly reduce the work of centrifugal pump
Make efficiency；Especially when centrifugal pump is used to extract the liquid in vacuum equipment, such situation is become apparent.
Also there is part centrifugal pump that a sealing ring is arranged between impeller and pump case front shroud in the prior art to be sealed,
But in centrifugal pump use process since damage in impeller or play cause the gap between impeller and pump case front shroud constantly to become
Greatly, sealing ring can only reduce gap, and cannot be sealed completely to gap at this, however it remains the problem of leakage, influence from
The working efficiency of heart pump.
Utility model content
The purpose of this utility model is to provide a kind of impeller seals mechanism and centrifugal pumps, existing to solve to a certain extent
There is the technical issues of impeller of centrifugal pump and pump cover front shroud can not be sealed effectively in technology.
The utility model provides a kind of impeller seals mechanism, including impeller, pump cover, dynamic sealing assembly and static seal group
Part；Sealing extension is provided on the front shroud of the impeller, the axis of the sealing extension is conllinear with the impeller spindle；
The dynamic sealing assembly includes rotating ring, bellows and elastic component；The bellows-sheathed is set on the outside of the sealing extension, described
Elastic component is sheathed on the outside of the bellows, and the both ends of the elastic component and the turn-up portion at the bellows both ends lean；
The rotating ring is located at the bellows towards on one end end face of the pump cover；The pump cover inner surface is provided with stepped part；Institute
It states static seal component to be located on the stepped part, the rotating ring can be mutually sealed against with the static seal component.
Further, the static seal component includes stationary ring and stationary ring gasket, the stationary ring gasket be arranged with it is described
On the outside of stationary ring, the stationary ring can with the ring seal against.
Further, limiting groove is offered on the stepped part, the part stationary ring gasket is embedded at the limit
In groove.
Further, the dynamic sealing assembly further includes preceding dead ring and rear dead ring；The preceding dead ring is sheathed on institute
Bellows is stated close to the outside of one end of the static seal component, and the outer wall of the preceding dead ring is equipped with ladder abutment face；Institute
Stating rear dead ring is open recesses, and the rear dead ring is sheathed on the outer of the one end of the bellows far from the static seal component
Side, and the open end of the open recesses is towards the side of the static seal component；One end of the elastic component is located at described spacious
In port recess, the other end of the elastic component leans with the ladder abutment face.
Further, the stepped part includes first order ladder and second level ladder, and the sealing extension can extend into
In the first order ladder, the static seal component is located on the second level ladder.
Further, open up fluted on the front shroud of the impeller, the bellows is far from the static seal component
One end is located in the groove.
Further, the elastic component is spring.
Further, the material of the stationary ring and the rotating ring is graphite, alloy, ceramics or silicon carbide.
Further, the material of the stationary ring gasket is rubber.
The utility model additionally provides a kind of centrifugal pump, including impeller seals mechanism described in any of the above embodiments.
Compared with prior art, the utility model has the following beneficial effects:
Impeller seals mechanism provided by the utility model includes impeller, pump cover, dynamic sealing assembly and static seal component；Impeller
Upper setting seals extension, and sealing extension is connected with the liquid inlet of front shroud of impeller, and seals the axis of extension
It is conllinear with the main shaft of impeller；Dynamic sealing assembly includes rotating ring, bellows and elastic component；The both ends of bellows have turn-up portion,
Elastic component is set in the outside of bellows, and turn-up portion of the both ends of elastic component with bellows both ends leans；Due to ripple
Pipe has retractility, and when one end of bellows is fixed, and the other end is under pressure, bellows can shorten along its length, set
Elastic component on the outside of bellows is compressed；When the disappearance of one end pressure of bellows, the wave under the action of elastic force of elastic component
Line pipe can extend；One end of bellows is additionally provided with rotating ring, realizes sealing for cooperating with static seal component.Work as dynamic sealing assembly
When being assemblied on impeller, bellows-sheathed is set on the outside of sealing extension, and one end of bellows is made to be resisted against the front cover of impeller
On plate, the one end of bellows with rotating ring is towards pump cover；The elasticity for relying on bellows itself simultaneously, is prolonged by bellows and sealing
The interference fit for stretching pipe, make bellows tightly be sheathed on sealing extension outside, and can make bellows and sealing extend
Sealing state is between pipe, liquid will not be between bellows and sealing extension by the sucking of resorption or back pressure to centrifugal pump
Mouthful, to ensure that the working efficiency of centrifugal pump.
Pump cover inner surface is provided with stepped part, wherein the axis direction phase of stepped part a cascaded surface and the main shaft of impeller
Vertically, static seal component is fixedly installed on the cascaded surface；When pump cover and centrifugal pump main body are installed, the sealing of impeller
Extension can extend into the stepped part, and the dynamic sealing assembly for being sheathed on the outside of sealing extension can be with static seal group
Part is mutually sealed against, to realize the sealing between impeller and pump cover, the liquid at outlet of centrifugal pump will not be from front shroud of impeller
Gap between pump cover is by the entrance of resorption or back pressure to centrifugal pump, to effectively improve the working efficiency and property of centrifugal pump
Energy.
When being centrifuged pump work, play axially and radially can occur with main shaft for impeller, not by common sealing element
Gap at this can be sealed completely, can only reduction gap appropriate, leakage still has, and still will affect the work of centrifugal pump
Efficiency；But by the transformation to impeller and pump cover structure, dynamic sealing assembly is set on impeller, static seal is accordingly arranged in pump cover
Component, when play in axial direction occurs for impeller, by the elastic force of elastic component and the retractility of bellows, rotating ring always can
It is enough to be sealed against with static seal component, sealing state is in so as to be always ensured that between impeller and pump cover；When impeller is sent out
When the play of raw radial direction, due to dynamic sealing assembly and the direction of the sealing surface of static seal component and the radial direction phase of impeller
Together, in the enough situations of contact area for guaranteeing sealing surface, when radial-play occurs for impeller, rotating ring and static seal component are still
It can be guaranteed at the state of palette, to will not reveal.
Therefore, centrifugal pump can be guaranteed at runtime by the impeller seals mechanism of the application, begun between impeller and pump cover
Be in sealing state eventually, liquid will not gap between impeller and pump cover by the suction inlet of resorption or back pressure to centrifugal pump, from
And guarantees centrifugal pump and be in efficient working condition always.
The utility model additionally provides a kind of centrifugal pump, including the impeller seals mechanism, thus the centrifugal pump
It can guarantee the leakproofness between front shroud of impeller and pump cover, to guarantee the beneficial effect of centrifugal pump working efficiency.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of centrifugal pump in the prior art；
Fig. 2 is the structural schematic diagram of impeller seals mechanism provided by the embodiment of the utility model；
Fig. 3 is enlarged drawing at A in Fig. 2；
Fig. 4 is the another structural schematic diagram of impeller seals mechanism provided by the embodiment of the utility model；
Fig. 5 is enlarged drawing at B in Fig. 4.
Appended drawing reference:
1 '-impeller, 2 '-pump covers, 1- impeller, 11- seal extension, 2- pump cover, 21- stepped part, 22- limiting groove, 23-
First order ladder, the second level 24- ladder, 3- dynamic sealing assembly, 31- rotating ring, 32- bellows, 33- elastic component fasten before 34-
Ring, dead ring after 35-, 4- static seal component, 41- stationary ring, 42- stationary ring gasket.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.
The component of the utility model embodiment for usually describing and showing in attached drawing here can be with a variety of different
Configuration is to arrange and design.It therefore, is not below purport to the detailed description of the embodiments of the present invention provided in the accompanying drawings
In the range of limitation claimed invention, but it is merely representative of the selected embodiment of the utility model.
Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the
One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
Impeller seals mechanism and centrifugal pump according to the application some embodiments are described referring to Fig. 1 to Fig. 5.
This application provides a kind of impeller seals mechanisms, as shown in Figures 2 and 3, including impeller 1, pump cover 2, dynamic sealing group
Part 3 and static seal component 4；It is provided with sealing extension 11 on the front shroud of impeller 1, seals the axis and impeller 1 of extension 11
Main shaft it is conllinear；Dynamic sealing assembly 3 includes rotating ring 31, bellows 32 and elastic component 33；Bellows 32 is sheathed on sealing extension
11 outsides, elastic component 33 is sheathed on 32 outside of bellows, and the both ends of elastic component 33 and the turn-up portion at 32 both ends of bellows offset
It leans on；Rotating ring 31 is located at bellows 32 towards in one end end face of pump cover 2；2 inner surface of pump cover is provided with stepped part 21；Static seal group
Part 4 is located on stepped part 21, and rotating ring 31 can be sealed against with 4 phase of static seal component.
Impeller seals mechanism provided by the present application includes impeller 1, pump cover 2, dynamic sealing assembly 3 and static seal component 4, is passed through
Dynamic sealing assembly 3 is sealed on impeller 1, static seal component 4 is sealed on pump cover 2, by dynamic sealing assembly 3 with
The sealing between impeller 1 and pump cover 2 is realized in sealing between static seal component 4, and the liquid at outlet of centrifugal pump will not be from impeller 1
Gap between front shroud and pump cover 2 is by the entrance of resorption or back pressure to centrifugal pump, to effectively improve the work effect of centrifugal pump
Rate and performance.
The setting sealing extension 11 first on impeller 1, sealing extension 11 are connected with the liquid inlet of 1 front shroud of impeller
It connects, and the axis for sealing extension 11 is conllinear with the main shaft of impeller 1, the liquid from centrifugal pump fluid intake is via sealing
Extension 11 enters inside impeller 1, is then discharged under the action of 1 centrifugal force of impeller via outlet of centrifugal pump；
Specifically, sealing extension 11 is welded to connect with 1 front shroud of impeller, or before sealing extension 11 and impeller 1
Cover board is an integral molding structure.
Dynamic sealing assembly 3 is sheathed on the outside of sealing extension 11, and when the centrifugal pump is operated, dynamic sealing assembly 3 can be with
Impeller 1 rotates together.Dynamic sealing assembly 3 includes rotating ring 31, bellows 32 and elastic component 33；The both ends of bellows 32, which have, to be turned over
Edge, elastic component 33 be set in the outside of bellows 32, and the both ends of elastic component 33 respectively correspond and turn over 32 both ends of bellows
Edge leans；Since bellows 32 has retractility, when one end of bellows 32 is fixed, when the other end is under pressure, ripple
Pipe 32 can shorten along its length, and the elastic component 33 for being sheathed on 32 outside of bellows is compressed；When 32 1 end pressure of bellows
It disappears, bellows 32 can extend under the action of the elastic force of elastic component 33；One end of bellows 32 is additionally provided with rotating ring 31, tool
Body, opens up fluted on one end end face of bellows 32, a part of rotating ring 31 is located in the groove, and by rotating ring 31 with
The interference fit of groove can make rotating ring 31 is stable to be embedded in the groove, to make rotating ring 31 and bellows 32 steadily
It is fixed together.
Specifically, when dynamic sealing assembly 3 is assemblied on impeller 1, bellows 32 is sheathed on 11 outside of sealing extension,
And it is resisted against one end of bellows 32 on the front shroud of impeller 1, the one end of bellows 32 with rotating ring 31 is towards pump cover 2；Together
When by bellows 32 itself elasticity, by bellows 32 and sealing extension 11 interference fit, make bellows 32 tightly
Be sheathed on the outside of sealing extension 11, and can make between bellows 32 and sealing extension 11 in sealing state, liquid
Body will not from bellows 32 and sealing extension 11 between by resorption or back pressure to the suction inlet of centrifugal pump, influence the work of centrifugal pump
Make efficiency；
2 inner surface of pump cover is provided with stepped part 21, wherein the axis of the main shaft of stepped part 21 a cascaded surface and impeller 1
Direction is perpendicular, and static seal component 4 is fixedly installed on the cascaded surface；When pump cover 2 and centrifugal pump main body are installed, leaf
The sealing extension 11 of wheel 1 can extend into the stepped part 21, and be sheathed on the dynamic sealing group in the outside of sealing extension 11
Part 3 can be sealed against with 4 phase of static seal component, so that the sealing between impeller 1 and pump cover 2 is realized, at outlet of centrifugal pump
Liquid will not be from the gap between 1 front shroud of impeller and pump cover 2 by the entrance of resorption or back pressure to centrifugal pump, to effectively improve
The working efficiency and performance of centrifugal pump.
When being centrifuged pump work, play axially and radially can occur with main shaft for impeller 1, not by common sealing element
Gap at this can be sealed completely, can only reduction gap appropriate, leakage still has, and still will affect the work of centrifugal pump
Efficiency；But by the transformation to 2 structure of impeller 1 and pump cover, dynamic sealing assembly 3 is set on impeller 1, pump cover 2 is accordingly arranged
Static seal component 4, when play in axial direction occurs for impeller 1, by the elastic force of elastic component 33 and stretching for bellows 32
Property, rotating ring 31 can be sealed against always with static seal component 4, so as to be always ensured that being between impeller 1 and pump cover 2
Sealing state；When the play of radial direction occurs for impeller 1, due to the side of dynamic sealing assembly 3 and the sealing surface of static seal component 4
To identical as the radial direction of impeller 1, in the enough situations of contact area for guaranteeing sealing surface, radial-play occurs for impeller 1
When, rotating ring 31 and static seal component 4 still are able to be guaranteed at the state of palette, to will not reveal.
Therefore, centrifugal pump can be guaranteed at runtime by the impeller seals mechanism of the application, between impeller 1 and pump cover 2
Always be in sealing state, liquid will not gap between impeller 1 and pump cover 2 by the sucking of resorption or back pressure to centrifugal pump
Mouthful, to guarantee that centrifugal pump is in always in efficient working condition.
In one embodiment of the application, it is preferable that as shown in figure 3, static seal component 4 includes that stationary ring 41 and stationary ring are close
Packing 42, stationary ring gasket 42 is arranged can be sealed against with 41 outside of stationary ring, stationary ring 41 with rotating ring 31.
In this embodiment, static seal component 4 include stationary ring 41 and stationary ring gasket 42, by stationary ring gasket 42 with it is quiet
Stationary ring gasket 42 is arranged the outside with stationary ring 41 by the interference fit of ring 41, keeps stationary ring gasket 42 and stationary ring 41 close
Envelope connection；
Sealing between dynamic sealing assembly 3 and static seal component 4 is by being sealed against between stationary ring 41 and rotating ring 31
Realize sealing, static seal component 4 is set on the stepped part 21 of 2 inner surface of pump cover, and wherein stationary ring gasket 42 is located at ladder
On the perpendicular cascaded surface of the axis direction of portion 21 and 1 main shaft of impeller, stationary ring 41 towards the side of rotating ring 31, when by pump cover 2 with
It when centrifugal pump main body is installed, can be sealed against between the stationary ring 41 on the rotating ring 31 on impeller 1 and pump cover 2, realize leaf
Sealing between wheel 1 and pump cover 2, to effectively improve the working efficiency and performance of centrifugal pump.
In one embodiment of the application, it is preferable that as shown in figure 3, offering limiting groove 22, portion on stepped part 21
Stationary ring gasket 42 is divided to be embedded in limiting groove 22.
In this embodiment, static seal component 4 is located at the axis direction of 2 inner wall stepped part 21 and 1 main shaft of impeller of pump cover
On perpendicular cascaded surface, by opening up limiting groove 22 on cascaded surface, by stationary ring gasket 42 towards the one of 2 side of pump cover
Part is placed in the limiting groove 22, is then passed through the interference fit of stationary ring gasket 42 and the fiber groove, is made stationary ring 41
Seal point is firmly embedded in limiting groove 22.
In one embodiment of the application, it is preferable that as shown in figure 3, dynamic sealing assembly 3 further includes 34 He of preceding dead ring
Dead ring 35 afterwards；Preceding dead ring 34 is sheathed on the outside of the one end of bellows 32 close to static seal component 4, and preceding dead ring 34
Outer wall is equipped with ladder abutment face；Dead ring 35 is open recesses afterwards, and rear dead ring 35 is sheathed on bellows 32 far from static seal group
The outside of one end of part 4, and the open end of open recesses is towards the side of static seal component 4；One end of elastic component 33 is located at spacious
In port recess, the other end and the ladder abutment face of elastic component 33 lean.
In this embodiment, dynamic sealing assembly 3 further includes preceding dead ring 34 and rear dead ring 35, by preceding dead ring 34 with
The outside for being sheathed on bellows 32 that dead ring 35 can make elastic component 33 more stable afterwards；Preceding dead ring 34 and rear dead ring 35 are equal
By the interference fit with bellows 32, it is firmly sheathed on the outside of bellows 32；Preceding dead ring 34 is located at bellows 32 and leans on
One end of nearly static seal component 4, rear dead ring 35 are located at the one end of bellows 32 far from static seal component 4；Dead ring 35 is afterwards
The outer wall of open recesses, preceding dead ring 34 is equipped with ladder abutment face, and one end of elastic component 33 is located in open recesses, elastic component 33
The other end be resisted against on the ladder abutment face, thus the outside for being sheathed on bellows 32 for keeping spring more stable.
In one embodiment of the application, it is preferable that as shown in Figure 4 and Figure 5, stepped part 21 includes first order ladder 23
With second level ladder 24, sealing extension 11 be can extend into first order ladder 23, and static seal component 4 is located at second level ladder
On 24.
In this embodiment, stepped part 21 includes first order ladder 23 and second level ladder 24, and static seal component 4 is located at the
It is close when being installed pump cover 2 and centrifugal pump main body on second level ladder 24 and the perpendicular cascaded surface of 1 major axes orientation of impeller
Envelope extension 11 can extend into first order ladder 23, and dynamic sealing assembly 3 can be with the static seal group in second level ladder 24
Part 4 is sealed against, so that sufficient space can be reserved in one end of sealing extension 11 by the first stepped part 21 of setting,
To make impeller 1 not collide with pump cover 2 when axial float occurs.
In one embodiment of the application, it is preferable that as shown in Fig. 2, opening up fluted, wave on the front shroud of impeller 1
Line pipe 32 is located in groove far from one end of static seal component 4.
In this embodiment, in order to make dynamic sealing assembly 3 more securely be sheathed on the outside of sealing extension 11, close
It seals and opens up groove on 1 front shroud of impeller of extension 11, one end of bellows 32 can be located exactly in the groove, and be passed through
Interference fit is embedded at the bottom of bellows 32 securely in the groove, occurs to extend along sealing to place dynamic sealing assembly 3
The play of 11 length direction of pipe.
In one embodiment of the application, it is preferable that as shown in Figures 2 to 5, elastic component 33 is spring.
In this embodiment, elastic component 33 is spring, and spring pocket is set to the outside of bellows 32, by the elasticity of spring,
When axial float occurs for impeller 1, bellows 32 can be made to extend and shorten, and provide motive force to rotating ring 31, make rotating ring 31
With 41 tight abutment of stationary ring.
In one embodiment of the application, it is preferable that as shown in Figures 2 to 5, the material of stationary ring 41 and rotating ring 31 is stone
Ink or alloy, ceramics or silicon carbide.
In this embodiment, in normal work, impeller 1 is in high-speed rotating state, stationary ring 41 and rotating ring to centrifugal pump
31 to form friction secondary, to bear certain pressure at work, therefore stationary ring 41 and rotating ring 31 use hard material, as graphite,
Alloy, ceramics or silicon carbide are able to bear pressure when impeller 1 works, guarantee the service life of impeller seals mechanism.
In one embodiment of the application, it is preferable that as shown in Figures 2 to 5, the material of stationary ring gasket 42 is rubber
Glue.
In this embodiment, the material of stationary ring gasket 42 is rubber, since rubber has elasticity, stationary ring sealing
Pad 42 can be arranged the outside for being installed on stationary ring 41 by being interference fitted, and be sealed to the contact surface of the two；Stationary ring simultaneously
Gasket 42 be also by interference fit be embedded at 2 inner wall of pump cover stepped part 21 and the axis direction of 1 main shaft of impeller it is perpendicular
Cascaded surface on, so that static seal component 4 and the inner wall of pump cover 2 be made to be also at sealing state.
Present invention also provides a kind of centrifugal pumps, as shown in Figures 2 to 5, the impeller seals including any of the above-described embodiment
Mechanism.
In this embodiment, centrifugal pump includes impeller seals mechanism, therefore centrifugal pump has the whole of impeller seals mechanism
Beneficial effect, this is no longer going to repeat them.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
Claims (10)
1. a kind of impeller seals mechanism, which is characterized in that including impeller, pump cover, dynamic sealing assembly and static seal component；
Sealing extension is provided on the front shroud of the impeller, the axis of the sealing extension and the main shaft of the impeller are total
Line；
The dynamic sealing assembly includes rotating ring, bellows and elastic component；The bellows-sheathed is set on the outside of the sealing extension,
The elastic component is sheathed on the outside of the bellows, and the both ends of the elastic component and the turn-up portion at the bellows both ends offset
It leans on；The rotating ring is located at the bellows towards on one end end face of the pump cover；
The inner surface of the pump cover is provided with stepped part；The static seal component is located on the stepped part；The rotating ring can
It is sealed against with the static seal component.
2. impeller seals mechanism according to claim 1, which is characterized in that the static seal component includes stationary ring and stationary ring
Gasket, the stationary ring gasket be arranged on the outside of the stationary ring, the stationary ring can with the ring seal against.
3. impeller seals mechanism according to claim 2, which is characterized in that limiting groove is offered on the stepped part,
The part stationary ring gasket is embedded in the limiting groove.
4. impeller seals mechanism according to claim 1, which is characterized in that the dynamic sealing assembly further includes preceding dead ring
With rear dead ring；
The preceding dead ring is sheathed on the bellows close to the outside of one end of the static seal component, and the preceding dead ring
Outer wall be equipped with ladder abutment face；
Dead ring is open recesses after described, and the rear dead ring is sheathed on one of the bellows far from the static seal component
The outside at end, and the open end of the open recesses is towards the side of the static seal component；
One end of the elastic component is located in the open recesses, and the other end of the elastic component offsets with the ladder abutment face
It leans on.
5. impeller seals mechanism according to claim 1, which is characterized in that the stepped part includes first order ladder and
Second level ladder, the sealing extension can extend into the first order ladder, and the static seal component is located at the second level
On ladder.
6. impeller seals mechanism according to claim 1, which is characterized in that offered on the front shroud of the impeller recessed
Slot, the bellows are located in the groove far from one end of the static seal component.
7. impeller seals mechanism according to claim 1, which is characterized in that the elastic component is spring.
8. impeller seals mechanism according to claim 2, which is characterized in that the material of the stationary ring and rotating ring difference
For graphite, alloy, ceramics or silicon carbide.
9. impeller seals mechanism according to claim 2, which is characterized in that the material of the stationary ring gasket is rubber.
10. a kind of centrifugal pump, which is characterized in that including the described in any item impeller seals mechanisms of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920424738.9U CN209621706U (en) | 2019-03-29 | 2019-03-29 | Impeller seals mechanism and centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920424738.9U CN209621706U (en) | 2019-03-29 | 2019-03-29 | Impeller seals mechanism and centrifugal pump |
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| CN209621706U true CN209621706U (en) | 2019-11-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112576516A (en) * | 2020-12-14 | 2021-03-30 | 扬州大学 | Full tubular pump with novel transmission structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112576516A (en) * | 2020-12-14 | 2021-03-30 | 扬州大学 | Full tubular pump with novel transmission structure |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210107 Address after: No.12, Liujin Road, Dongcheng sub district office, Nanchuan District, Chongqing 408400 Patentee after: SHENZHEN YINXIU TECHNOLOGY Co.,Ltd. Address before: 333000 50 Jinghu, Hongyuan street, Hongyuan Town, Fuliang County, Jingdezhen City, Jiangxi Province Patentee before: Wang Zhiyong |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191112 Termination date: 20210329 |