CN207297380U - Centrifugal multistage pump multiple centrifugal pump - Google Patents
Centrifugal multistage pump multiple centrifugal pump Download PDFInfo
- Publication number
- CN207297380U CN207297380U CN201720537819.0U CN201720537819U CN207297380U CN 207297380 U CN207297380 U CN 207297380U CN 201720537819 U CN201720537819 U CN 201720537819U CN 207297380 U CN207297380 U CN 207297380U
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- CN
- China
- Prior art keywords
- impeller
- pump
- guide vane
- centrifugal
- ring portion
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Abstract
The utility model provides a kind of centrifugal multistage pump multiple centrifugal pump, belongs to water pump technology.It solves the problems, such as that noise is big during existing multistage centrifugal pump work, hydraulic loss is big.This centrifugal multistage pump multiple centrifugal pump, including motor and by intake end cover, the pump housing that pump barrel is formed with water outlet end cap, stretched to by motor-driven pump shaft in the pump housing, some grades of guide vanes and impeller are equipped with the pump housing, it is equipped with and is used for the spiral flow guiding structure one for being introduced to next stage impeller inlet of the current of upper level impeller outlet between two adjacent impellers, it is equipped with the spiral flow guiding structure two being introduced in the outlet of water outlet end cap of the current of afterbody impeller outlet between afterbody impeller and water outlet end cap, it is equipped between the guide vane that impeller is set in contrast and is used to prevent current from entering and the safeguard structure to rub between impeller and guide vane can be reduced again.The utility model has the advantages that hydraulic loss is few, noise lampet.
Description
Technical field
The utility model belongs to water pump technology, is related to a kind of centrifugal multistage pump multiple centrifugal pump.
Background technology
Centrifugal multistage pump multiple centrifugal pump be applied to industrial liquid conveying and urban water supply and sewerage, skyscraper pressurized water supply, gardens sprinkling irrigation,
Fire fighting pressurization, send the circularly-supercharged cold-warm waters such as water, heating, bathroom and coordinative composition of equipments and air-conditioner set to circulate, cool down at a distance
Water conveying etc..For example, Chinese patent discloses a kind of centrifugal multistage pump multiple centrifugal pump [102086872 A of application publication number CN], including motor
And pump, pump include shaft coupling, stent letter body, bearing, axle envelope, water exit end, stage casing, guide vane, impeller, axis and inlet segment, pump and electricity
Machine is connected by shaft coupling, and motor is supported by stent letter body, and bearing and axle envelope are located at the lower section of shaft coupling, stage casing, guide vane, leaf
Wheel, axle position are between water exit end and inlet segment.
There are problems with for above-mentioned centrifugal multistage pump multiple centrifugal pump：1st, it is again introduced into from the water of upper level impeller outflow after detour
Into the water inlet of next stage impeller, hydraulic loss is easily caused；2nd, gap can not ensure that gap is excessive between impeller and guide vane
Then water is easily entered directly into next stage impeller from the gap, does not reach the purpose of supercharging；If gap is too small, impeller and guide vane it
Between there is friction, not only influence the service life of impeller and guide vane, but also noise can be produced, influence the normal use of water pump.
The content of the invention
The purpose of this utility model is that there are the above problem for existing technology, it is proposed that one kind reduction hydraulic loss,
The small centrifugal multistage pump multiple centrifugal pump of noise.
The purpose of this utility model can be realized by following technical proposal：
This centrifugal multistage pump multiple centrifugal pump, including motor and the pump housing that is made of intake end cover, pump barrel and water outlet end cap, are driven by motor
Pump shaft stretch in the pump housing, is equipped with some grades of guide vanes and impeller in the pump housing, it is characterised in that two adjacent impellers it
Between be equipped with and be used for the spiral flow guiding structure one for being introduced to next stage impeller inlet of the current of upper level impeller outlet, afterbody
It is equipped with the spiral drainage being introduced in the outlet of water outlet end cap of the current of afterbody impeller outlet between impeller and water outlet end cap
Structure two, is equipped between the guide vane that the impeller is set in contrast and is used to prevent current from entering and can reduce impeller again with leading
The safeguard structure to rub between leaf.
In above-mentioned centrifugal multistage pump multiple centrifugal pump, the impeller is two-stage：The first order impeller and second being fixed on pump shaft
Level impeller, the guide vane are two：The first order guide vane and second level guide vane being fixed on the pump housing, above-mentioned safeguard structure are
Two, and respectively between first order guide vane and first order impeller, second level guide vane and second level impeller.
In above-mentioned centrifugal multistage pump multiple centrifugal pump, the safeguard structure includes plastic hoop in a ring, the plastic hoop it is interior
Footpath is more than the outside diameter at impeller inlet, and the outside diameter of the plastic hoop is less than the internal diameter of guide vane, and the plastic hoop passes through connection
Structure is arranged on guide vane.
In above-mentioned centrifugal multistage pump multiple centrifugal pump, the connection structure includes extending radially outwardly positioned at plastic hoop one end
Spacing ring portion one and the spacing ring portion two to extend radially outwardly arranged on the plastic hoop other end, the spacing ring portion one extend to
The water outlet side of guide vane, the spacing ring portion two extend to the influent side of guide vane.
In above-mentioned centrifugal multistage pump multiple centrifugal pump, the spacing ring portion one, spacing ring portion two are integrally formed with plastic hoop, described
The influent side of guide vane is equipped with the annular groove that depth is more than spacing two thickness of ring portion, and the spacing ring portion two is located at the annular groove
It is interior.
In above-mentioned centrifugal multistage pump multiple centrifugal pump, the flow guiding structure one include being arranged on first order impeller and second level impeller it
Between deflector one, the deflector one is fixed on the pump housing and which is provided with for connecting first order impeller outlet and second
The draining hole one of level impeller inlet；The flow guiding structure two includes the deflector being arranged between second level impeller and water outlet end cap
Two, the deflector two is fixed on the pump housing and which is provided with for connecting second level impeller outlet and the outlet of water outlet end cap
Draining hole two.
In above-mentioned centrifugal multistage pump multiple centrifugal pump, plastic sheath one, first order impeller are equipped between the deflector one and pump shaft
One end of plastic sheath one is resisted against, second level impeller is resisted against the other end of plastic sheath one, and the middle part of the plastic sheath one has
The annular protrusion one of radially outwardly projecting, the annular protrusion one and deflector one are clearance fit.Annular protrusion one and modeling
Material set one is integrally formed.
In above-mentioned centrifugal multistage pump multiple centrifugal pump, the pump shaft is equipped with plastic sheath two, and the middle part of the plastic sheath two has
The annular protrusion two of radially outwardly projecting, the annular protrusion two and deflector two are clearance fit.Annular protrusion two and modeling
Material set two is integrally formed.
Compared with prior art, this centrifugal multistage pump multiple centrifugal pump has the following advantages：
By setting relocatable plastic hoop between impeller and guide vane, water can be reduced and be directly entered from the gap, moreover it is possible to
The friction between impeller and guide vane is reduced, noise is reduced while reducing hydraulic loss, improves pump head；Deflector with
Plastic sheath is set between pump shaft, equally achievees the purpose that to reduce hydraulic loss, noise and improves pump head.
Brief description of the drawings
Fig. 1 is a kind of structure diagram of preferred embodiment provided by the utility model.
Fig. 2 is enlarged diagram at A in Fig. 1 provided by the utility model.
Fig. 3 is enlarged diagram at B in Fig. 1 provided by the utility model.
In figure, 1, motor；2nd, intake end cover；3rd, pump barrel；4th, water outlet end cap；5th, first order impeller；6th, second level impeller；7、
First order guide vane；8th, second level guide vane；9th, plastic hoop；10th, spacing ring portion one；11st, spacing ring portion two；12nd, annular groove；13rd, lead
Flowing plate one；14th, deflector two；15th, plastic sheath one；16th, annular protrusion one.
Embodiment
It is specific embodiment of the utility model and with reference to attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these embodiments.
Centrifugal multistage pump multiple centrifugal pump as shown in Figure 1, including motor 1 and the pump that is made of intake end cover 2, pump barrel 3 and water outlet end cap 4
Body, the pump shaft driven by motor 1 are stretched in the pump housing, are equipped with some grades of guide vanes and impeller in the pump housing, between two adjacent impellers
Equipped with for by the spiral flow guiding structure one for being introduced to next stage impeller inlet of the current of upper level impeller outlet, afterbody leaf
Take turns water outlet end cap 4 between be equipped with by the current of afterbody impeller outlet it is spiral be introduced to water outlet end cap 4 export in drainage
Structure two, is equipped between the guide vane that impeller is set in contrast and is used to prevent current enter and can reduce between impeller and guide vane again from rubbing
The safeguard structure of wiping.
As shown in Figure 1, impeller is two-stage：The first order impeller 5 and second level impeller 6 being fixed on pump shaft, guide vane two
It is a：The first order guide vane 7 and second level guide vane 8 being fixed on the pump housing, safeguard structure is two, and is located at first order guide vane respectively
Between 7 and first order impeller 5, second level guide vane 8 and second level impeller 6.
As depicted in figs. 1 and 2, safeguard structure includes plastic hoop 9 in a ring, and the internal diameter of the plastic hoop 9 is more than impeller
The outside diameter of entrance, the outside diameter of plastic hoop 9 is less than the internal diameter of guide vane, and plastic hoop 9 is arranged on guide vane by connection structure.
As shown in Fig. 2, connection structure includes being located at the spacing ring portion 1 to extend radially outwardly of 9 one end of plastic hoop and sets
In the spacing ring portion 2 11 to extend radially outwardly of 9 other end of plastic hoop, spacing ring portion 1 extends to the water outlet side of guide vane, limit
Position ring portion 2 11 extends to the influent side of guide vane.
As shown in Fig. 2, spacing ring portion 1, spacing ring portion 2 11 are integrally formed with plastic hoop 9, the influent side of guide vane is equipped with
Depth is more than the annular groove 12 of spacing 2 11 thickness of ring portion, and spacing ring portion 2 11 is located in the annular groove 12.
As shown in Figure 1, flow guiding structure one includes the deflector 1 being arranged between first order impeller 5 and second level impeller 6,
Deflector 1 is fixed on the pump housing and which is provided with to be drawn for connecting the outlet of first order impeller 5 with second level impeller 6 import
Head piece one；Flow guiding structure two includes the deflector 2 14 being arranged between second level impeller 6 and water outlet end cap 4, and deflector 2 14 is solid
It is scheduled on the pump housing and which is provided with the draining hole two exported for connecting the outlet of second level impeller 6 with water outlet end cap 4.
As shown in figure 3, being equipped with plastic sheath 1 between deflector 1 and pump shaft, first order impeller 5 is resisted against plastic sheath
One 15 one end, second level impeller 6 are resisted against the other end of plastic sheath 1, and the middle part of plastic sheath 1 is with radially outward convex
The annular protrusion 1 risen, annular protrusion 1 are clearance fit, annular protrusion 1 and plastic sheath 1 with deflector 1
It is integrally formed.
As shown in Figure 1, pump shaft is equipped with plastic sheath two, the middle part of the plastic sheath two has the annular of radially outwardly projecting
Protrusion two, annular protrusion two and deflector 2 14 are clearance fit, and annular protrusion two is integrally formed with plastic sheath two.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Described specific embodiment can be done various modifications or additions or using similar by belonging to those skilled in the art
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (8)
1. a kind of centrifugal multistage pump multiple centrifugal pump, including motor (1) and the pump that is made of intake end cover (2), pump barrel (3) with water outlet end cap (4)
Body, the pump shaft driven by motor (1) are stretched in the pump housing, are equipped with some grades of guide vanes and impeller in the pump housing, its feature exists
In being equipped between two adjacent impellers and be used to be introduced to drawing for next stage impeller inlet by the current of upper level impeller outlet are spiral
Flow structure one, is equipped between afterbody impeller and water outlet end cap (4) and is introduced to the current of afterbody impeller outlet are spiral
Flow guiding structure two in water outlet end cap (4) outlet, is equipped with safeguard structure between the impeller and the guide vane set in contrast.
2. centrifugal multistage pump multiple centrifugal pump according to claim 1, it is characterised in that the impeller is two-stage：It is fixed on pump shaft
First order impeller (5) and second level impeller (6), the guide vane be two：The first order guide vane (7) that is fixed on the pump housing and
Second level guide vane (8), above-mentioned safeguard structure are two, and respectively positioned at first order guide vane (7) and first order impeller (5), the
Between two level guide vane (8) and second level impeller (6).
3. centrifugal multistage pump multiple centrifugal pump according to claim 1, it is characterised in that the safeguard structure includes plastics in a ring
Ring (9), the internal diameter of the plastic hoop (9) are more than the outside diameter at impeller inlet, and the outside diameter of the plastic hoop (9) is less than the interior of guide vane
Footpath, and the plastic hoop (9) is arranged on guide vane by connection structure.
4. centrifugal multistage pump multiple centrifugal pump according to claim 3, it is characterised in that the connection structure includes being located at plastic hoop
(9) the spacing ring portion one (10) to extend radially outwardly of one end and the limit to extend radially outwardly arranged on plastic hoop (9) other end
Position ring portion two (11), the spacing ring portion one (10) extend to the water outlet side of guide vane, the spacing ring portion two (11) extension
To the influent side of guide vane.
5. centrifugal multistage pump multiple centrifugal pump according to claim 4, it is characterised in that the spacing ring portion one (10), spacing ring portion
Two (11) are integrally formed with plastic hoop (9), and the influent side of the guide vane is equipped with the ring that depth is more than spacing two (11) thickness of ring portion
Shape groove (12), the spacing ring portion two (11) are located in the annular groove (12).
6. centrifugal multistage pump multiple centrifugal pump according to claim 1, it is characterised in that the flow guiding structure one includes being arranged on the first order
Deflector one (13) between impeller (5) and second level impeller (6), the deflector one (13) are fixed on the pump housing and thereon
Equipped with the draining hole one for connecting first order impeller (5) outlet and second level impeller (6) import；The flow guiding structure two wraps
Include and be fixed on pump arranged on the deflector two (14) between second level impeller (6) and water outlet end cap (4), the deflector two (14)
On body and it which is provided with for connecting the draining hole two that second level impeller (6) exports and water outlet end cap (4) exports.
7. centrifugal multistage pump multiple centrifugal pump according to claim 6, it is characterised in that set between the deflector one (13) and pump shaft
There is plastic sheath one (15), first order impeller (5) is resisted against one end of plastic sheath one (15), and second level impeller (6) is resisted against plastics
The other end of one (15) is covered, the middle part of the plastic sheath one (15) has the annular protrusion one (16) of radially outwardly projecting, described
Annular protrusion one (16) and deflector one (13) be clearance fit.
8. centrifugal multistage pump multiple centrifugal pump according to claim 1, it is characterised in that the pump shaft is equipped with plastic sheath two, described
Between annular protrusion two of the middle part of plastic sheath two with radially outwardly projecting, the annular protrusion two and deflector two (14) are
Gap coordinates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720537819.0U CN207297380U (en) | 2017-05-15 | 2017-05-15 | Centrifugal multistage pump multiple centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720537819.0U CN207297380U (en) | 2017-05-15 | 2017-05-15 | Centrifugal multistage pump multiple centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207297380U true CN207297380U (en) | 2018-05-01 |
Family
ID=62271937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720537819.0U Expired - Fee Related CN207297380U (en) | 2017-05-15 | 2017-05-15 | Centrifugal multistage pump multiple centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207297380U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454434A (en) * | 2019-09-17 | 2019-11-15 | 苏州美达斯机电有限公司 | A kind of centrifugal pump multi-stage impeller structure |
| CN110939610A (en) * | 2019-12-17 | 2020-03-31 | 绍兴市雪花机电有限公司 | Mute pump |
-
2017
- 2017-05-15 CN CN201720537819.0U patent/CN207297380U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454434A (en) * | 2019-09-17 | 2019-11-15 | 苏州美达斯机电有限公司 | A kind of centrifugal pump multi-stage impeller structure |
| CN110939610A (en) * | 2019-12-17 | 2020-03-31 | 绍兴市雪花机电有限公司 | Mute pump |
| CN110939610B (en) * | 2019-12-17 | 2020-11-13 | 绍兴市雪花机电有限公司 | Mute pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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: 20180501 Termination date: 20190515 |