CN209621706U - Impeller seals mechanism and centrifugal pump - Google Patents

Impeller seals mechanism and centrifugal pump Download PDF

Info

Publication number
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
Authority
CN
China
Prior art keywords
impeller
bellows
static seal
ring
seal component
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
CN201920424738.9U
Other languages
Chinese (zh)
Inventor
王智勇
王敏
王�锋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHENZHEN YINXIU TECHNOLOGY Co.,Ltd.
Original Assignee
王智勇
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 王智勇 filed Critical 王智勇
Priority to CN201920424738.9U priority Critical patent/CN209621706U/en
Application granted granted Critical
Publication of CN209621706U publication Critical patent/CN209621706U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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

Impeller seals mechanism and centrifugal pump
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.
CN201920424738.9U 2019-03-29 2019-03-29 Impeller seals mechanism and centrifugal pump Expired - Fee Related CN209621706U (en)

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

Publications (1)

Publication Number Publication Date
CN209621706U true CN209621706U (en) 2019-11-12

Family

ID=68458119

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920424738.9U Expired - Fee Related CN209621706U (en) 2019-03-29 2019-03-29 Impeller seals mechanism and centrifugal pump

Country Status (1)

Country Link
CN (1) CN209621706U (en)

Similar Documents

Publication Publication Date Title
CN206035814U (en) Supplementary vacuum pump
CN209621706U (en) Impeller seals mechanism and centrifugal pump
CN206903924U (en) Sealing device and the water pump with the sealing device
CN206129682U (en) A seal assembly and centrifugal pump for centrifugal pump
CN206608359U (en) Energy-efficient customization water pump and its multiple flow passages impeller
CN111207084B (en) Self-priming centrifugal pump
CN208138157U (en) Double-suction submerged pump
CN201236839Y (en) Centrifugal pump
CN207975023U (en) A kind of high efficiency tangent fire pumps
CN108730201A (en) Double-suction submerged pump
CN216950958U (en) Single-phase circulation permanent-magnet water pump
CN213039455U (en) Elongated slot type vane pump part
CN110735798B (en) Sealed leak-proof horizontal centrifugal sand pump
CN212003602U (en) Centrifugal pump with improved sealing structure
CN209586710U (en) A kind of immersible pump
CN207634368U (en) A kind of high-efficiency and energy-saving type water pump
CN210152966U (en) Double-end-face mechanical sealing structure of impurity pump
CN209458134U (en) A kind of novel standard-sized sheet Characteristics of Centrifugal Pulp Pump
CN203488385U (en) Novel direct connection self-sucking pump
CN209294116U (en) Pump mechanical power sealing structure
CN209458177U (en) A kind of pump uses novel sealing structure
CN209781222U (en) Multistage centrifugal pump with self-balanced impeller
CN215170806U (en) Double-suction submersible centrifugal pump
CN215719762U (en) Mechanical sealing device of condensate pump
CN208651184U (en) A kind of electric water pump

Legal Events

Date Code Title Description
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

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