CN203081850U - Centrifugal pump impeller of closed structure - Google Patents
Centrifugal pump impeller of closed structure Download PDFInfo
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- CN203081850U CN203081850U CN 201220697448 CN201220697448U CN203081850U CN 203081850 U CN203081850 U CN 203081850U CN 201220697448 CN201220697448 CN 201220697448 CN 201220697448 U CN201220697448 U CN 201220697448U CN 203081850 U CN203081850 U CN 203081850U
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- impeller
- centrifugal pump
- arc
- pump impeller
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Abstract
The utility model provides a centrifugal pump impeller of a closed structure, and belongs to a member converting mechanical energy into fluid pressure energy. According to the centrifugal pump impeller, a front cover plate and a rear cover plate are connected together through a large circular arc blade, a hollow front impeller sleeve is arranged in the center of the front cover plate, a hollow rear impeller sleeve is arranged in the center of the rear cover plate, a shaft sleeve is fixedly connected with the interior of the rear impeller sleeve, and blades are uniformly arranged between the front cover plate and the rear cover plate. According to the centrifugal pump impeller, a simple structure is adopted; the centrifugal pump impeller is easy to cast and machine and good in dynamic balancing performance; and phenomena of vibration, noise, gas etching, and the like in working are eliminated, friction and abrasion against adjacent components are reduced, and the service life is prolonged.
Description
Technical field
The utility model relates to a kind of closed type structure centrifugal pump impeller, belongs to the member that mechanical energy is converted into fluid pressure energy.
Background technique
At present, centrifugal pump is widely used in the industrial and agricultural production.Centrifugal pump is to produce centrifugal action because impeller is made high speed rotating in pump case, liquid between impeller, leaf road is subjected to blade to be forced to rotate and energy transfer, make fluid pressure can and kinetic energy increase, pass through again the kinetic energy switching to pressure can device after, thereby reach the purpose of conveying liquid.During centrifugal pump work, because the high speed rotating of impeller, the liquid in the pump also rotates with impeller, and produce certain centrifugal force, liquid is thrown away around the mind-set from impeller, be pooled to then in the pump case runner with flaring cross section and go, flow to discharge tube through diffuser pipe.Simultaneously, the impeller center then forms certain vacuum because liquid is thrown toward impeller outer edge, and under the effect of imbibition face atmospheric pressure, liquid enters impeller through inhaling people's pipe: make the continuous operation of pump energy.Centrifugal pump has simple in structure, and compactness is in light weight, and cost is low, can directly be connected with high speed prime mover, and discharge capacity is big, and advantage such as feed flow is even.But the impeller of centrifugal pump is to the requirement for dynamic balance height, not good easy vibration of the dynamic balancing of impeller, and noise, phenomenons such as cavitation erosion, it is excessive also can to produce the wearing and tearing of housing and impeller abrasion-proof ring, faults such as impeller obstruction, wearing and tearing, corrosion.
Summary of the invention
In order to solve problems of the prior art, the utility model provides a kind of closed type structure centrifugal pump impeller, this centrifugal pump impeller is answered the simple structure of Bian, be easy to processing, dynamic balance performance is good, phenomenons such as the vibration during elimination work, noise, cavitation erosion, the friction and the wearing and tearing of minimizing and adjacent component increase the service life.
The technical solution adopted in the utility model is: a kind of closed type structure centrifugal pump impeller, it adopts blade that front shroud and back shroud are linked together, the central authorities of described front shroud are provided with the preceding impeller set of a hollow, the central authorities of back shroud are provided with the back impeller set of a hollow, the impeller set internal fixation connects an axle sleeve in the back, 3-8 blade evenly is set between front shroud and back shroud, the arc-shaped structure that blade adopts two sections circular arcs to constitute, be short circular arc by one section circular arc in the middle of the impeller, one section circular arc by the impeller cylindrical is oval arc, the arc length of short circular arc is the 20-30% of oval arc arc length, and the radius of arc of oval arc is the 68-75% of impeller radius.
The runner that forms between the described blade expands to the liquid outlet of impeller cylindrical always with circular arc from the liquid entering hole in the middle of the impeller.
Described front shroud tilts to back shroud, and tilt angle a is the 5-6 degree, forms the axial dimension of the axial dimension of runner exit less than the runner import.
The central authorities of described axle sleeve are provided with the cone shape hole of a band keyway.
The connecting wall of described back impeller set and axle sleeve is provided with an equalizing orifice at least.
The beneficial effects of the utility model are: this closed type structure centrifugal pump impeller adopts the great circle arc shaped blade that front shroud and back shroud are linked together, the central authorities of front shroud are provided with the preceding impeller set of a hollow, the central authorities of back shroud are provided with the back impeller set of a hollow, the impeller set internal fixation connects an axle sleeve in the back, and blade evenly is set between front shroud and back shroud.This centrifugal pump impeller Bian simple structure is easy to casting and processing, and dynamic balance performance is good, and phenomenons such as the vibration when having eliminated work, noise, cavitation erosion have reduced friction and wearing and tearing with adjacent component, have prolonged working life.
Description of drawings
Fig. 1 is a kind of plan view of closed type structure centrifugal pump impeller.
Fig. 2 is the right elevation of Fig. 1.
Fig. 3 is the blade structure figure of impeller.
Among the figure: 1, front shroud, 1a, preceding impeller set, 2, back shroud, 2a, back impeller set, 3, circular arc vane, 3a, first intersecting line, 3b, second intersecting line, 3c, third phase transversal, 4, axle sleeve, 4a, second bearing, 5, cone shape hole, 5a, keyway, 6, equalizing orifice, 7, runner.
Embodiment
Also come the clearer the utility model that intactly illustrates in conjunction with the accompanying drawings below by embodiment.
Fig. 1,2 shows a kind of structural drawing of closed type structure centrifugal pump impeller.Among the figure, this closed type structure centrifugal pump impeller adopts blade 3 that front shroud 1 and back shroud 2 are linked together, there is the preceding impeller set 1a of a hollow in the central authorities of front shroud 1, there is the back impeller set 2a of a hollow in the central authorities of back shroud 2, impeller set 2a internal fixation connects an axle sleeve 4 in the back, and the central authorities of axle sleeve 4 are provided with the cone shape hole 5 of a band keyway 5a.On the connecting wall of back impeller set 2a and axle sleeve 4, be provided with equalizing orifice 6.Between front shroud 1 and back shroud 2, evenly arrange 5 blades 3, the arc-shaped structure that blade 3 adopts two sections circular arcs to constitute, be short circular arc by one section circular arc in the middle of the impeller, one section circular arc by the impeller cylindrical is oval arc, the arc length of short circular arc is oval arc arc length 220-30%, and the radius of arc of oval arc is the 68-75% of impeller radius.The runner 7 that forms between the blade 3 expands to the liquid outlet of impeller cylindrical always with circular arc from the liquid entering hole in the middle of the impeller.Front shroud 1 tilts to back shroud 2, and tilt angle a is 5.5 degree, forms the axial dimension of the axial dimension of runner 7 outlets less than runner 7 imports.
Fig. 3 shows the blade structure figure of impeller.The blade 3 that only draws among the figure, the joint of blade 3 and back shroud 2 be called can't represent among first another intersecting line of intersecting line 3a(figure clear), blade 3 has two-lines with the joint of front shroud 1, is called the second intersecting line 3b and third phase transversal 3c.The zone also can be described as the sectional shape of blade 3 between the second intersecting line 3b and the third phase transversal 3c.
Adopt the centrifugal pump impeller of technique scheme, its main structure parameters: D=280mm, d=74mm, b=5.8mm, R1=96mm, R2=102mm, R3=104mm, R4=48mm, R5=76mm, R6=65mm.
Above-mentioned centrifugal pump impeller adopts Ludox fusible pattern casing technology, and which floor adopts normal casing technology before when the system shell, and pattern is put in the slurry, makes its whole body overwork slurry, spreads with sand again.Because the different numbers of plies is for the granularity requirements difference of sand, except that surface layer used surface layer sand, remainder layer all spread the bastard coal stone sand with 30-60, can't be circulated into up to sand again and annotate in the road.Adopt grouting process this moment, cooperates the strong cold drying proposal of high wind simultaneously, to increase investment shell intensity and to reduce time of drying.Shell is put in the slurry, made the inner surface of runner evenly be stained with slurry, take out shell again.The strong cold technology of high wind comprises an air compressor and several airducts.The external diameter offer of airduct is less than the impeller water inlet.The outlet of airduct one end and air compressor is linked to each other, and the other end is linked into the water inlet of impeller, starts compressor, and air enters into impeller channel along airduct, blows with high wind, utilizes the evaporating principle of air flows, improves the drying efficiency of impeller.
Adopt the shell of this technology preparation, the shell number of plies of runner inside is much larger than the number of plies of crust, and intensity is far superior to design strength, finds no the phenomenon of shell fracture and bleed-out in cast.Because the strong cold technology of high wind that adopts, reduce the time of drying of impeller, shortened the manufacture cycle, reduced cost of production, and the yield rate height has improved quality of product.
Claims (5)
1. closed type structure centrifugal pump impeller, it adopts blade (3) that front shroud (1) and back shroud (2) are linked together, it is characterized in that: the central authorities of described front shroud (1) are provided with the preceding impeller set (1a) of a hollow, the central authorities of back shroud (2) are provided with the back impeller set (2a) of a hollow, impeller set (2a) internal fixation connects an axle sleeve (4) in the back, between front shroud (1) and back shroud (2), 3-8 blade (3) is set evenly, the arc-shaped structure that blade (3) adopts two sections circular arcs to constitute, be short circular arc by one section circular arc in the middle of the impeller, one section circular arc by the impeller cylindrical is oval arc, the arc length of short circular arc is the 20-30% of oval arc arc length, and the radius of arc of oval arc is the 68-75% of impeller radius.
2. a kind of closed type structure centrifugal pump impeller according to claim 1 is characterized in that: the runner (7) that forms between the described blade (3) expands to the liquid outlet of impeller cylindrical always with circular arc from the liquid entering hole in the middle of the impeller.
3. a kind of closed type structure centrifugal pump impeller according to claim 1, it is characterized in that: described front shroud (1) tilts to back shroud (2), tilt angle a is the 5-6 degree, forms the axial dimension of the axial dimension of runner (7) outlet less than runner (7) import.
4. a kind of closed type structure centrifugal pump impeller according to claim 1 is characterized in that: the central authorities of described axle sleeve (4) are provided with the cone shape hole (5) of a band keyway (5a).
5. a kind of closed type structure centrifugal pump impeller according to claim 2 is characterized in that: described back impeller set (2a) is provided with an equalizing orifice (6) at least with the connecting wall of axle sleeve (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220697448 CN203081850U (en) | 2012-12-17 | 2012-12-17 | Centrifugal pump impeller of closed structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220697448 CN203081850U (en) | 2012-12-17 | 2012-12-17 | Centrifugal pump impeller of closed structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203081850U true CN203081850U (en) | 2013-07-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220697448 Expired - Fee Related CN203081850U (en) | 2012-12-17 | 2012-12-17 | Centrifugal pump impeller of closed structure |
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| CN (1) | CN203081850U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103521719A (en) * | 2013-09-29 | 2014-01-22 | 湖州南丰机械制造有限公司 | Narrow-runner impeller casting |
| CN105240311A (en) * | 2015-11-16 | 2016-01-13 | 蓝深集团股份有限公司 | Prefabricated pump station employing single channel impeller water pump |
| CN108561327A (en) * | 2018-04-09 | 2018-09-21 | 张家港市海工船舶机械制造有限公司 | A kind of double shrouded wheel and its manufacturing method |
| CN110653579A (en) * | 2019-10-28 | 2020-01-07 | 襄阳五二五泵业有限公司 | Method for manufacturing closed impeller with narrow flow passage |
| CN111594455A (en) * | 2020-05-22 | 2020-08-28 | 南方泵业股份有限公司 | Micro-flow low-noise horizontal multistage centrifugal pump |
| WO2023070774A1 (en) * | 2021-10-31 | 2023-05-04 | 浙江水泵总厂有限公司 | Impeller inlet structure and centrifugal pump having same |
-
2012
- 2012-12-17 CN CN 201220697448 patent/CN203081850U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103521719A (en) * | 2013-09-29 | 2014-01-22 | 湖州南丰机械制造有限公司 | Narrow-runner impeller casting |
| CN103521719B (en) * | 2013-09-29 | 2016-01-06 | 湖州南丰机械制造有限公司 | A kind of narrow path impeller foundry goods |
| CN105240311A (en) * | 2015-11-16 | 2016-01-13 | 蓝深集团股份有限公司 | Prefabricated pump station employing single channel impeller water pump |
| CN108561327A (en) * | 2018-04-09 | 2018-09-21 | 张家港市海工船舶机械制造有限公司 | A kind of double shrouded wheel and its manufacturing method |
| CN110653579A (en) * | 2019-10-28 | 2020-01-07 | 襄阳五二五泵业有限公司 | Method for manufacturing closed impeller with narrow flow passage |
| CN111594455A (en) * | 2020-05-22 | 2020-08-28 | 南方泵业股份有限公司 | Micro-flow low-noise horizontal multistage centrifugal pump |
| WO2023070774A1 (en) * | 2021-10-31 | 2023-05-04 | 浙江水泵总厂有限公司 | Impeller inlet structure and centrifugal pump having same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130724 Termination date: 20131217 |