CN106438449A - Seal assembly for centrifugal pump and centrifugal pump - Google Patents
Seal assembly for centrifugal pump and centrifugal pump Download PDFInfo
- Publication number
- CN106438449A CN106438449A CN201610887869.1A CN201610887869A CN106438449A CN 106438449 A CN106438449 A CN 106438449A CN 201610887869 A CN201610887869 A CN 201610887869A CN 106438449 A CN106438449 A CN 106438449A
- Authority
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- China
- Prior art keywords
- pump housing
- impeller
- ring
- choma
- body ring
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/086—Sealings especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2261—Rotors specially for centrifugal pumps with special measures
- F04D29/2266—Rotors specially for centrifugal pumps with special measures for sealing or thrust balance
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to the technical field of centrifugal pumps, in particular to a seal assembly for a centrifugal pump and the centrifugal pump. The seal assembly and the centrifugal pump aim at relieving the problem that in the prior art, a clearance at the joint of an impeller and a pump body is large, and consequently fluid leakage happens. The seal assembly comprises an impeller wear ring and a pump body wear ring which are used in a matched manner. First opposite surfaces and second opposite surfaces are arranged between the pump body wear ring and the impeller wear ring. The first opposite surfaces are the opposite surfaces of the circumferential face of the impeller wear ring and the impeller wear ring and, and the second opposite surfaces are opposite surfaces of the impeller wear ring and the pump body wear ring in the radial direction of the impeller wear ring. In a working state, a clearance exists between the first opposite surfaces, and the second opposite surfaces are in contact with each other. Due to the fact that no clearance exists between the second opposite surfaces, the seal assembly can prevent fluid flowing out of a water outlet of an impeller from flowing back to a water inlet of the impeller through the clearance at the joint of the impeller and a pump body, and the aim of preventing fluid leakage is achieved.
Description
Technical field
The present invention relates to centrifugation pump technical field, especially relates to a kind of black box for centrifugal pump and centrifugal pump.
Background technology
Centrifugal pump is a kind of produce during rotation by impeller centrifugal force conveying the pump of liquid, and centrifugal pump is in the industrial production
Extensive utilization is obtained.
The structure description of centrifugal pump of the prior art is as follows：
Fig. 1 and Fig. 2 is refer to, the pump housing and impeller is included, impeller is installed on pump housing inner chamber, the pump housing has pump housing water inlet
With pump housing outlet, impeller has impeller water inlet and impeller outlet, and fluid enters impeller water inlet from pump housing water inlet, and
Pump chamber is flowed out to from the impeller outlet, and flowed out by pump housing outlet.Segment fluid flow is through pump housing body ring and impeller port ring 311
Clearance backflow to impeller inlet end, being again introduced into impeller carries out fluid circulation, forms idle work.
The reflux problem of fluid result in larger flow loss, cause the work efficiency of centrifugal pump to reduce.In order to reduce
This flow loss, people's common practice is to reduce the gap of impeller port ring 311 and 321 junction of pump housing choma, causes leaf
Wheel higher with the requirement on machining accuracy of the pump housing (machining accuracy height just can reduce the gap of impeller and pump housing junction as far as possible).
Thus, impeller port ring of the prior art 311 how is avoided with the larger fluid for causing in the gap of pump housing choma 321
Leakage problem becomes people's technical problem urgently to be resolved hurrily.
Content of the invention
It is an object of the invention to provide a kind of black box and centrifugal pump for centrifugal pump.To alleviate in prior art
The impeller of presence and the larger Fluid leakage problems for causing in pump housing junction gap.
For solving above-mentioned technical problem, the invention provides following technical proposal：
A kind of black box for centrifugal pump, including：Matching used impeller port ring and pump housing choma；
The impeller port ring is arranged at impeller water inlet one end, can be with impeller synchronous rotary；The pump housing choma is fixed
In the pump housing inwall of the pump housing with the impeller junction,
There is between the pump housing choma and the impeller port ring the first apparent surface and the second apparent surface；Described first
Apparent surface is the impeller port ring side face surface relative with the impeller port ring, and second apparent surface is the impeller
Choma and the pump housing choma are on the relative surface of the impeller port ring radial direction；
Wherein, under in working order, with gap between first apparent surface, second apparent surface is indirectly
Touch；
The black box is used for the gap for preventing the fluid for flowing out from impeller outlet from passing through impeller and pump housing junction
It is back to impeller water inlet.
Further,
The impeller port ring is used interchangeably with the pump housing choma.
Further,
The pump housing choma and the impeller port ring have the first combination form：
The pump housing choma is the first pump housing choma, and the impeller port ring is the first impeller port ring；
The section of first pump housing choma axial direction is L-shaped, includes the first end face body ring and first being detachably connected
Side surface body ring, nearly pump housing end of the first end face body ring set loaded on the first side body ring, and the first side body ring
Length along its axis direction is more than the length of the first end face body ring；
First impeller port ring is built in described impeller water inlet one end, is set in outside the first side body ring, and
Nearly impeller side positioned at the first end face body ring.
Further,
The pump housing choma and the impeller port ring have the second combination form；
The pump housing choma is the second pump housing choma, and the impeller port ring is the second impeller port ring；
The section of second pump housing choma axial direction is L-shaped, includes the second end face body ring and second being detachably connected
Side surface body ring, the second end face body ring is offseted with the nearly pump housing end of the second side body ring, and the second end face body ring
External diameter more than the second side body ring external diameter；
Second impeller port ring is built in described impeller water inlet one end, is set in outside the second side body ring, and
Nearly impeller side positioned at the second end face body ring.
Further,
The pump housing choma and the impeller port ring have the 3rd combination form；
The pump housing choma is the 3rd pump housing choma, and the impeller port ring is trilobed wheel choma；
3rd section that pump housing choma is structure as a whole, which is axial is L-shaped, and the nearly pump of the 3rd pump housing choma
Body end has outside projection；
The trilobed wheel choma is built in the water inlet end of impeller, is set in outside the 3rd pump housing choma, and institute
State the projection of the nearly pump housing end near the 3rd pump housing choma of trilobed wheel choma.
Further,
The pump housing choma and the impeller port ring have the 4th combination form：
The pump housing choma is the 4th pump housing choma, and the impeller port ring is the 4th impeller port ring；
The section of the 4th pump housing choma axial direction is L-shaped, includes the 3rd end face body ring and the 3rd being detachably connected
Side surface body ring, the 3rd end face body ring is offseted with the nearly pump housing end of the 3rd side surface body ring, and the 3rd end face body ring
Internal diameter less than the 3rd side surface body ring internal diameter；
4th impeller port ring is placed on described impeller water inlet one end, and be located at the 3rd end face body ring with described
In the region that 3rd side surface body collar becomes.
Further,
The pump housing choma and the impeller port ring have the 5th combination form：
The pump housing choma is the 5th pump housing choma, and the impeller port ring is the 5th impeller port ring；
The section of the 5th pump housing choma axial direction is L-shaped, includes the 4th end face body ring and the 4th being detachably connected
Side surface body ring, the 4th end face body ring is located inside the 4th side surface body ring, and the 4th side surface body ring is along its axis
The length in direction is more than the length of the 4th end face body ring；
5th impeller port ring is placed on described impeller water inlet one end, and be located at the 4th end face body ring with described
The region that 4th side surface body collar becomes.
Further,
The pump housing choma and the impeller port ring have the 6th combination form：
The pump housing choma is the 6th pump housing choma, and the impeller port ring is the 6th impeller port ring；
6th pump housing choma is structure as a whole, and its axial section is L-shaped, and the nearly pump of the 6th pump housing choma
Body end has inside projection；
6th impeller port ring is placed on impeller water inlet one end, is located at the inside of the 6th pump housing choma, and institute
The nearly pump housing end of the 6th impeller port ring is stated near the projection.
A kind of centrifugal pump, including the pump housing and the impeller for being installed on the pump housing inner chamber, the pump housing has pump housing water inlet and pump
Body outlet, impeller has impeller water inlet and impeller outlet, and fluid enters the impeller water inlet from pump housing water inlet, from
The impeller water inlet enters the fluid passage of the impeller internal, and flows out to the pump housing water outlet from the impeller outlet
Mouthful；
The position being connected with the pump housing in the impeller is provided with the black box of any of the above-described technical scheme.
Further,
Inwall of the pump housing in the pump housing with the junction of the impeller is provided for the spacing pump housing choma
Step surface.
In conjunction with above technical scheme, as the black box that the present invention is provided includes matching used impeller port ring and the pump housing
Choma；Impeller port ring is arranged at impeller water inlet one end, can be with impeller synchronous rotary；Pump housing choma is fixed on the pump housing with impeller
The pump housing inwall of junction, has the first apparent surface and the second apparent surface between pump housing choma and impeller port ring；First phase
It is the impeller port ring side face surface relative with impeller port ring to surface, the second apparent surface is impeller port ring with pump housing choma in leaf
The relative surface of wheel choma radial direction.Under in working order, with gap between the first apparent surface, the second apparent surface
Between contact；Black box is used for the clearance backflow for preventing the fluid for flowing out from impeller outlet from passing through impeller and pump housing junction
To impeller water inlet.Due to gapless between the second apparent surface, thus fluid cannot pass through to let out between the second apparent surface
Leakage, also, in working order under, moisture film can be formed between the first apparent surface, moisture film effectively can prevent fluid leak, stream
Body cannot pass through the first apparent surface and the second apparent surface leaks, thus reach the purpose for preventing fluid from leaking.
Further, since centrifugal pump have the black box, when the black box is not installed, with the pump housing of the prior art and
Gap at impeller cooperation is compared, and the technical scheme that the present invention is provided can significantly increase above-mentioned gap, thus manufacture
On requirement to the pump housing and the quality of fit of impeller reduce, and reduce the probability that impeller kills phenomenon, and prolongation
The service life of impeller.
Description of the drawings
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, below will be to concrete
Needed for embodiment or description of the prior art, accompanying drawing to be used is briefly described, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the centrifugal pump for being assembled with impeller port ring and pump housing choma in prior art；
Fig. 2 is the structural representation of impeller port ring and pump housing choma in Fig. 1；
Fig. 3 is the first combination form structural representation of black box provided in an embodiment of the present invention；
Fig. 4 is the second combination form structural representation of black box provided in an embodiment of the present invention；
Fig. 5 is the 3rd combination form structural representation of black box provided in an embodiment of the present invention；
Fig. 6 is the 4th combination form structural representation of black box provided in an embodiment of the present invention；
Fig. 7 is the 5th combination form structural representation of black box provided in an embodiment of the present invention；
Fig. 8 is the 6th combination form structural representation of black box provided in an embodiment of the present invention；
Fig. 9 is the overall knot that the black box with the 3rd combination form provided in an embodiment of the present invention is installed on centrifugal pump
Structure schematic diagram；
Figure 10 is the entirety that the black box with the 6th combination form provided in an embodiment of the present invention is installed on centrifugal pump
Structural representation.
Icon：The 100- pump housing；200- impeller；101- pump housing water inlet；102- pump housing outlet；201- impeller enters
The mouth of a river；202- impeller outlet；300- black box；311- impeller port ring；321- pump housing choma；The first impeller of 312-
Choma；The second impeller port ring of 313-；314- trilobed wheel choma；The 4th impeller port ring of 315-；The 5th impeller port ring of 316-；
The 6th impeller port ring of 317-；322- first pump housing choma；323- second pump housing choma；The 3rd pump housing choma of 324-；325-
4th pump housing choma；The 5th pump housing choma of 326-；The 6th pump housing choma of 327-；3221- first end face body ring；3222-
One side body ring；3231- second end face body ring；3232- second side body ring；The 3rd end face body ring of 3251-；3252-
Three side surface body rings；The 4th end face body ring of 3261-；The 4th side surface body ring of 3262-.
Specific embodiment
Below in conjunction with accompanying drawing, technical scheme is clearly and completely described, it is clear that described enforcement
Example is a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment obtained under the premise of creative work is not made by personnel, belongs to the scope of protection of the invention.
In describing the invention, it should be noted that term " " center ", " on ", D score, "left", "right", " vertical ",
The orientation of instruction such as " level ", " interior ", " outward " or position relationship be based on orientation shown in the drawings or position relationship, merely to
Be easy to describe the present invention and simplify description, rather than indicate or the hint device of indication or element must with specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.Additionally, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that indicating or hint relative importance.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；Can
To be to be mechanically connected, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Embodiment 1 provides a kind of black box 300 for centrifugal pump, and the black box 300 is used for preventing from impeller
The fluid that outlet 202 flows out passes through impeller 200 with the clearance backflow of 100 junction of the pump housing to impeller water inlet 201, so as to reach
To the purpose for preventing fluid leakage.
Embodiment 2 provides a kind of centrifugal pump, employs the black box 300 in embodiment 1, the sealing on unassembled
During component 300, compared with the gap at the pump housing of the prior art 100 and 200 cooperation of impeller, the technical scheme that the present invention is provided
Above-mentioned gap can be significantly increased, thus in the manufacturing, the requirement to the pump housing 100 and the quality of fit of impeller 200 reduces,
And reduce the probability that impeller 200 kills phenomenon, and the service life for extending impeller 200.
It should be noted that the nearly pump housing end being related in the present invention is referred to Figure of description 1 as reference, left side is near
Pump housing end, right side is nearly impeller end.
Below in conjunction with the accompanying drawings embodiment 1 and embodiment 2 are described in detail：
Wherein, Fig. 1 is the structural representation of the centrifugal pump for being assembled with impeller port ring and pump housing choma in prior art；Fig. 2
For impeller port ring in Fig. 1 and the structural representation of pump housing choma；Fig. 3 is first group of black box provided in an embodiment of the present invention
Close morphosiss schematic diagram；Fig. 4 is the second combination form structural representation of black box provided in an embodiment of the present invention；Fig. 5
The 3rd combination form structural representation for black box provided in an embodiment of the present invention；Fig. 6 is provided in an embodiment of the present invention
4th combination form structural representation of black box；Fig. 7 is the 5th combination shape of black box provided in an embodiment of the present invention
State structural representation；Fig. 8 is the 6th combination form structural representation of black box provided in an embodiment of the present invention；Fig. 9 is this
The black box with the 3rd combination form that inventive embodiments are provided is installed on the overall structure diagram of centrifugal pump；Figure 10 is
The black box with the 6th combination form provided in an embodiment of the present invention is installed on the overall structure diagram of centrifugal pump.
Embodiment 1
A kind of black box 300 for centrifugal pump is present embodiments provided, including：Matching used impeller port ring and pump
Body choma.
Impeller port ring is arranged at 201 one end of impeller water inlet, can be with 200 synchronous rotary of impeller；Pump housing choma is fixed on
The pump housing 100 and the pump housing inwall of 200 junction of impeller, have the first apparent surface and second between pump housing choma and impeller port ring
Apparent surface；First apparent surface is the impeller port ring side face surface relative with impeller port ring, and the second apparent surface is impeller mouth
Ring and pump housing choma are on the relative surface of impeller port ring radial direction.
Wherein, under in working order, with gap between the first apparent surface, contact between the second apparent surface.
Black box is used for preventing the fluid for flowing out from impeller outlet 202 from passing through impeller 200 with 100 junction of the pump housing
Clearance backflow is to impeller water inlet 201.The beneficial effect that the black box 300 can reach is：Due to the second relative table
Gapless between face, thus fluid cannot pass through to leak between the second apparent surface, also, in working order under, first is relative
Moisture film can be formed between surface, and moisture film can effectively prevent fluid from leaking, and fluid cannot pass through the first apparent surface and second
Apparent surface leaks, thus has reached the purpose for preventing fluid from leaking.
Further, since centrifugal pump has the black box 300, on unassembled during the black box 300, with prior art
In gap of the pump housing choma 321 between impeller port ring 311 compared with, the technical scheme that the present invention is provided can be significantly increased
Gap is stated, thus the requirement in the manufacturing to the pump housing 100 and the quality of fit of impeller 200 reduces, and reduce impeller
200 probabilities for killing phenomenon, and the service life for extending impeller 200.
In the alternative of the present embodiment, above-mentioned impeller port ring and pump housing choma are used interchangeably, to improve using upper
Motility.
In the alternative of the present embodiment, pump housing choma and impeller port ring can be provided with multiple combination form, concrete and
Speech, pump housing choma and impeller port ring have the first combination form, the second combination form, the 3rd combination form, the 4th combination form,
5th combination form and the 6th combination form.Hereinafter each combination form is described in more detail：
First combination form：Pump housing choma is the first pump housing choma 322, and impeller port ring is the first impeller port ring 312.First
The section of 322 axial direction of pump housing choma is L-shaped, includes the first end face body ring 3221 and first side body ring being detachably connected
3222, first end face body ring 3221 is set in the nearly pump housing end of first side body ring 3222, and first side body ring 3222 is along which
The length of axis direction is more than the length of first end face body ring 3221；First impeller port ring 312 is built in impeller water inlet 201 1
Hold, be set in outside first side body ring 3222, and the nearly impeller side positioned at first end face body ring 3221.Wherein, first end face
The connected mode of body ring 3221 and first side body ring 3222 is not limited to threaded, interference swelling connection, binding agent connection
Deng.In addition, under in working order, the gap between the first apparent surface is 0.1-2mm, contacts between the second apparent surface.Need
It is noted that above-mentioned first apparent surface refers to relative surface between first side body ring 3222 and the first impeller port ring 312,
Above-mentioned second apparent surface refers to relative surface between first end face body ring 3221 and the first impeller port ring 312.
Second combination form：Pump housing choma is the second pump housing choma 323, and impeller port ring is the second impeller port ring 313；Second
The section of 323 axial direction of pump housing choma is L-shaped, includes the second end face body ring 3231 and second side body ring being detachably connected
3232, second end face body ring 3231 is offseted with the nearly pump housing end of second side body ring 3232, and second end face body ring 3231 is outer
Footpath is more than the external diameter of second side body ring 3232；Second impeller port ring 313 is built in 201 one end of impeller water inlet, is set in
Outside two side faces body ring 3232, and the nearly impeller side positioned at second end face body ring 3231.Wherein, second end face body ring 3231 and
The connected mode of two side faces body ring 3232 is not limited to threaded, interference swelling connection, binding agent connection etc..In addition, in work
Make under state, the gap between the first apparent surface is to contact 0.1-2mm, between the second apparent surface.It should be noted that on
State the first apparent surface and refer to relative surface between second side body ring 3232 and the second impeller port ring 313, above-mentioned second is relative
Surface refers to relative surface between second end face body ring 3231 and the first impeller port ring 312.
3rd combination form：Pump housing choma is the 3rd pump housing choma 324, and impeller port ring is trilobed wheel choma 314；3rd
The section that pump housing choma 324 is structure as a whole, which is axial be L-shaped, and the nearly pump housing end of the 3rd pump housing choma 324 have outside
Raised；Trilobed wheel choma 314 is built in the water inlet end of impeller, is set in outside the 3rd pump housing choma 324, and trilobed wheel
The nearly pump housing end of choma 314 is near the projection of the 3rd pump housing choma 324.In addition, under in working order, between the first apparent surface
Gap be 0.1-2mm, between the second apparent surface contact.It should be noted that above-mentioned first apparent surface refers to the 3rd pump housing
Relative surface between the periphery direction of choma 324 and trilobed wheel choma 314, above-mentioned second apparent surface refers to above-mentioned projection
Relative surface between trilobed wheel choma 314.
4th combination form：Pump housing choma is the 4th pump housing choma 325, and impeller port ring is the 4th impeller port ring 315；4th
The section of 325 axial direction of pump housing choma is L-shaped, includes the 3rd end face body ring 3251 and the 3rd side surface body ring being detachably connected
3252, the 3rd end face body ring 3251 is offseted with the nearly pump housing end of the 3rd side surface body ring 3252, and the 3rd end face body ring 3251 is interior
Footpath is less than the internal diameter of the 3rd side surface body ring 3252；4th impeller port ring 315 is placed on 201 one end of impeller water inlet, and is located at the
In the region that three end face body rings 3251 and the 3rd side surface body ring 3252 are surrounded.Wherein, the 3rd end face body ring 3251 and the 3rd side
The connected mode of body ring 3252 is not limited to threaded, interference swelling connection, binding agent connection etc..In addition, in working order
Under, the gap between the first apparent surface is 0.1-2mm, contacts between the second apparent surface.It should be noted that above-mentioned first
Apparent surface refers to relative surface between the 3rd side surface body ring 3252 and the 4th impeller port ring 315, and above-mentioned second apparent surface refers to
Relative surface between 3rd end face body ring 3251 and the 4th impeller port ring 31.
5th combination form：Pump housing choma is the 5th pump housing choma 326, and impeller port ring is the 5th impeller port ring 316；5th
The section of 326 axial direction of pump housing choma is L-shaped, includes the 4th end face body ring 3261 and the 4th side surface body ring being detachably connected
3262, the 4th end face body ring 3261 is located inside the 4th side surface body ring 3262, and the 4th side surface body ring 3262 is along its axis direction
Length more than the 4th end face body ring 3261 length；5th impeller port ring 316 is placed on 201 one end of impeller water inlet, and position
In the region that the 4th end face body ring 3261 and the 4th side surface body ring 3262 are surrounded.Wherein, the 4th end face body ring 3261 and the 4th side
Connected mode between face body ring 3262 is not limited to threaded, interference swelling connection, binding agent connection etc..In addition, in work
Make under state, the gap between the first apparent surface is to contact 0.1-2mm, between the second apparent surface.It should be noted that on
State the first apparent surface and refer to relative surface between the 4th side surface body ring 3262 and the 5th impeller port ring 316, above-mentioned second is relative
Surface refers to relative surface between the 4th end face body ring 3261 and the 5th impeller port ring 316.
6th combination form：Pump housing choma is the 6th pump housing choma 327, and impeller port ring is the 6th impeller port ring 317；6th
Pump housing choma 327 is structure as a whole, its axial section be L-shaped, and the nearly pump housing end of the 6th pump housing choma 327 have inside
Raised；6th impeller port ring 317 is placed on 201 one end of impeller water inlet, is located at the inside of the 6th pump housing choma 327, and the 6th
The nearly pump housing end of impeller port ring 317 is near raised.In addition, under in working order, the gap between the first apparent surface is 0.1-
2mm, contacts between the second apparent surface.It should be noted that above-mentioned first apparent surface refers to the circumference of the 6th pump housing choma 327
Relative surface between face direction and the 6th impeller port ring 317, above-mentioned second apparent surface refers to above-mentioned raised and the 6th impeller mouth
Relative surface between ring 317.
It should be noted that the length of the impeller port ring described in the present embodiment is preferably 0.2～5 with wide ratio.
It should be noted that above multiple combination form is the present embodiment preferably embodiment, art technology people
Member is it should be appreciated that on the premise of without departing from present inventive concept, other deformation in structure and retouching all should be in application claims
Within the scope of protection.
Embodiment 2
A kind of centrifugal pump is present embodiments provided, including the pump housing 100 and the impeller 200 for being installed on 100 inner chamber of the pump housing, the pump housing
100 with pump housing water inlet 101 and pump housing outlet 102, impeller 200 with impeller water inlet 201 and impeller outlet 202,
Fluid enters impeller water inlet 201 from pump housing water inlet 101, enters the fluid passage of impeller internal from impeller water inlet 201, and
Pump housing outlet 102 is flowed out to from impeller outlet 202.
The position being connected with the pump housing 100 in impeller 200 is provided with black box 300.
In the further scheme of the present embodiment, inwall of the pump housing 100 in the pump housing 100 with the junction of impeller 200 is arranged
It is the step surface for spacing pump housing choma.
Fig. 9 shows that the black box 300 with the 3rd combination form is installed on the structural representation of centrifugal pump, now,
Inwall of the pump housing 100 in the pump housing 100 with the junction of impeller 200 is provided with step surface, the nearly pump housing end of the 3rd pump housing choma 324
Abut against with the step surface of the pump housing 100.Trilobed wheel choma 314 is connected in impeller water inlet 201.
Figure 10 shows that the black box 300 with the 6th combination form is installed on the structural representation of centrifugal pump, now,
Inwall of the pump housing 100 in the pump housing 100 with the junction of impeller 200 is set to step surface, the nearly pump housing end of the 6th pump housing choma 327
Abut against with the step surface of the pump housing 100.6th impeller port ring 317 is set in outside impeller water inlet 201.
In order to save length, the first combination form, the second combination form, the 4th combination form and the 5th combination form group
Structural representation loaded on centrifugal pump is not illustrated in Figure of description, one of ordinary skill in the art be referred to Fig. 1, Fig. 9 and
Figure 10 realizes corresponding first combination form, the second combination form, the 4th combination form and the assembling of the 5th combination form respectively
Version in centrifugal pump.
To sum up, as centrifugal pump group is equipped with the black box 300, thus effectively can prevent to flow from impeller outlet 202
The fluid for going out is by the clearance backflow of impeller 200 and 100 junction of the pump housing to 100 inner chamber of the pump housing.Fluid is prevented so as to reach
The purpose of leakage.
In addition, when the black box 300 is not installed, with the gap at the pump housing of the prior art 100 and 200 cooperation of impeller
Compare, the technical scheme that the present invention is provided can significantly increase above-mentioned gap, thus to the pump housing 100 and impeller in the manufacturing
The requirement of 200 quality of fit reduces, and reduces the probability that impeller 200 kills phenomenon, and extends impeller 200
Service life.
Finally it should be noted that：Various embodiments above only in order to technical scheme to be described, rather than a limitation；To the greatest extent
Pipe has been described in detail to the present invention with reference to foregoing embodiments, it will be understood by those within the art that：Its according to
So the technical scheme described in foregoing embodiments can be modified, or which part or all technical characteristic are entered
Row equivalent；And these modifications or replacement, do not make the essence of appropriate technical solution depart from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a kind of black box for centrifugal pump, it is characterised in that include：Matching used impeller port ring and pump housing choma；
The impeller port ring is arranged at impeller water inlet one end, can be with impeller synchronous rotary；The pump housing choma is fixed on institute
The pump housing inwall of the pump housing and the impeller junction is stated,
There is between the pump housing choma and the impeller port ring the first apparent surface and the second apparent surface；Described first is relative
Surface is the impeller port ring side face surface relative with the impeller port ring, and second apparent surface is the impeller port ring
With the pump housing choma on the relative surface of the impeller port ring radial direction；
Wherein, under in working order, with gap between first apparent surface, contact between second apparent surface；
The black box is used for the clearance backflow for preventing the fluid for flowing out from impeller outlet from passing through impeller and pump housing junction
To impeller water inlet.
2. black box according to claim 1, it is characterised in that：
The impeller port ring is used interchangeably with the pump housing choma.
3. black box according to claim 1, it is characterised in that
The pump housing choma and the impeller port ring have the first combination form：
The pump housing choma is the first pump housing choma, and the impeller port ring is the first impeller port ring；
The section of first pump housing choma axial direction is L-shaped, includes the first end face body ring and first side being detachably connected
Body ring, nearly pump housing end of the first end face body ring set loaded on the first side body ring, and the first side body ring is along which
The length of axis direction is more than the length of the first end face body ring；
First impeller port ring is built in described impeller water inlet one end, is set in outside the first side body ring, and is located at
The nearly impeller side of the first end face body ring.
4. black box according to claim 1, it is characterised in that
The pump housing choma and the impeller port ring have the second combination form；
The pump housing choma is the second pump housing choma, and the impeller port ring is the second impeller port ring；
The section of second pump housing choma axial direction is L-shaped, includes the second end face body ring and second side being detachably connected
Body ring, the second end face body ring is offseted with the nearly pump housing end of the second side body ring, and the second end face body ring is outer
Footpath is more than the external diameter of the second side body ring；
Second impeller port ring is built in described impeller water inlet one end, is set in outside the second side body ring, and is located at
The nearly impeller side of the second end face body ring.
5. black box according to claim 1, it is characterised in that
The pump housing choma and the impeller port ring have the 3rd combination form；
The pump housing choma is the 3rd pump housing choma, and the impeller port ring is trilobed wheel choma；
3rd section that pump housing choma is structure as a whole, which is axial is L-shaped, and the nearly pump housing end of the 3rd pump housing choma
With outside projection；
The trilobed wheel choma is built in the water inlet end of impeller, is set in outside the 3rd pump housing choma, and described
The nearly pump housing end of trilobed wheel choma is near the projection of the 3rd pump housing choma.
6. black box according to claim 1, it is characterised in that
The pump housing choma and the impeller port ring have the 4th combination form：
The pump housing choma is the 4th pump housing choma, and the impeller port ring is the 4th impeller port ring；
The section of the 4th pump housing choma axial direction is L-shaped, includes the 3rd end face body ring and the 3rd side being detachably connected
Body ring, the 3rd end face body ring is offseted with the nearly pump housing end of the 3rd side surface body ring, and the 3rd end face body ring is interior
Footpath is less than the internal diameter of the 3rd side surface body ring；
4th impeller port ring is placed on described impeller water inlet one end, and is located at the 3rd end face body ring and the described 3rd
In the region that side surface body collar becomes.
7. black box according to claim 1, it is characterised in that
The pump housing choma and the impeller port ring have the 5th combination form：
The pump housing choma is the 5th pump housing choma, and the impeller port ring is the 5th impeller port ring；
The section of the 5th pump housing choma axial direction is L-shaped, includes the 4th end face body ring and the 4th side being detachably connected
Body ring, the 4th end face body ring is located inside the 4th side surface body ring, and the 4th side surface body ring is along its axis direction
Length more than the 4th end face body ring length；
5th impeller port ring is placed on described impeller water inlet one end, and is located at the 4th end face body ring and the described 4th
The region that side surface body collar becomes.
8. black box according to claim 1, it is characterised in that
The pump housing choma and the impeller port ring have the 6th combination form：
The pump housing choma is the 6th pump housing choma, and the impeller port ring is the 6th impeller port ring；
6th pump housing choma is structure as a whole, and its axial section is L-shaped, and the nearly pump housing end of the 6th pump housing choma
With inside projection；
6th impeller port ring is placed on impeller water inlet one end, is located at the inside of the 6th pump housing choma, and described the
The nearly pump housing end of six impeller port rings is near the projection.
9. a kind of centrifugal pump, including the pump housing and the impeller for being installed on the pump housing inner chamber, the pump housing has pump housing water inlet and the pump housing
Outlet, impeller has impeller water inlet and impeller outlet, and fluid enters the impeller water inlet from pump housing water inlet, from institute
The fluid passage that impeller water inlet enters the impeller internal is stated, and the pump housing water outlet is flowed out to from the impeller outlet
Mouthful；
Characterized in that, the position being connected with the pump housing in the impeller is arranged just like described in any one of claim 1-8
Black box.
10. centrifugal pump according to claim 9, it is characterised in that the pump housing is in the company of the pump housing and the impeller
The inwall at the place of connecing is provided for the step surface of the spacing pump housing choma.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610887869.1A CN106438449B (en) | 2016-10-12 | 2016-10-12 | Seal assembly and centrifugal pump for centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610887869.1A CN106438449B (en) | 2016-10-12 | 2016-10-12 | Seal assembly and centrifugal pump for centrifugal pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106438449A true CN106438449A (en) | 2017-02-22 |
| CN106438449B CN106438449B (en) | 2019-08-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610887869.1A Expired - Fee Related CN106438449B (en) | 2016-10-12 | 2016-10-12 | Seal assembly and centrifugal pump for centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106438449B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989051A (en) * | 2017-05-19 | 2017-07-28 | 合肥工业大学 | A kind of sealing opening ring for centrifugal pump |
| CN113027805A (en) * | 2021-03-30 | 2021-06-25 | 上海凯泉泵业（集团）有限公司 | Booster-type sealing energy-saving device for pump |
| CN113309732A (en) * | 2021-05-31 | 2021-08-27 | 景德镇学院 | Gas conveying device |
| CN113482937A (en) * | 2021-08-23 | 2021-10-08 | 江苏永一泵业科技集团有限公司 | Hot water circulating pump mouth ring device with supporting structure |
| CN114033706A (en) * | 2021-11-17 | 2022-02-11 | 嘉利特荏原泵业有限公司 | Centrifugal pump |
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| CN206129682U (en) * | 2016-10-12 | 2017-04-26 | 浙江远邦流体科技有限公司 | A seal assembly and centrifugal pump for centrifugal pump |
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| US4023918A (en) * | 1975-02-10 | 1977-05-17 | Itt Industries, Inc. | Pump |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989051A (en) * | 2017-05-19 | 2017-07-28 | 合肥工业大学 | A kind of sealing opening ring for centrifugal pump |
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| CN113027805A (en) * | 2021-03-30 | 2021-06-25 | 上海凯泉泵业（集团）有限公司 | Booster-type sealing energy-saving device for pump |
| CN113027805B (en) * | 2021-03-30 | 2024-05-17 | 上海凯泉泵业（集团）有限公司 | Pressurized sealing energy-saving device for pump |
| CN113309732A (en) * | 2021-05-31 | 2021-08-27 | 景德镇学院 | Gas conveying device |
| CN113482937A (en) * | 2021-08-23 | 2021-10-08 | 江苏永一泵业科技集团有限公司 | Hot water circulating pump mouth ring device with supporting structure |
| CN114033706A (en) * | 2021-11-17 | 2022-02-11 | 嘉利特荏原泵业有限公司 | Centrifugal pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106438449B (en) | 2019-08-02 |
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