CN202690532U - Centrifugal pump - Google Patents
Centrifugal pump Download PDFInfo
- Publication number
- CN202690532U CN202690532U CN 201220310059 CN201220310059U CN202690532U CN 202690532 U CN202690532 U CN 202690532U CN 201220310059 CN201220310059 CN 201220310059 CN 201220310059 U CN201220310059 U CN 201220310059U CN 202690532 U CN202690532 U CN 202690532U
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- CN
- China
- Prior art keywords
- impeller
- centrifugal pump
- pump
- material layer
- resistant material
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- Expired - Fee Related
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Abstract
An embodiment of the utility model discloses a centrifugal pump, comprising a pump head shell and an impeller rotationally arranged in the pump head shell, wherein the position of the pump head shell corresponding to an impeller center is provided with a water inlet; an abrasion-resistant material layer is embedded in the inner wall of the pump head shell back from the water inlet; and the abrasion-resistant material layer is opposite to the impeller. According to the utility model, a technical way that the abrasion-resistant material layer embedded on the inner wall of the pump head shell back from the water inlet is used and the abrasion-resistant material layer is opposite to the impeller is used, thus, abrasion/corrosion destructive power is weakened; the service life of the centrifugal pump is prolonged; in addition, the centrifugal pump uses an impeller structure that a first edge part is heightened gradually from the impeller center to an edge correspondingly to the height of a plane where a wheel hub is; therefore, alary cavitation and cavitation erosion damage are weakened effectively.
Description
Technical field
The utility model relates to a kind of centrifugal pump.
Background technique
The existing impeller that is used for sandblast is increased to flow at high speed state with the sand aqueous mixtures from zero velocity at the inner chamber of pump head, the sand particle all has dissection to the water passage surface of impeller and pump head in the high flow rate dirty solution, the pump head surface is cut down chip to the sand particle and sand grains is blended together, the sand particle becomes large after the kneading, and is larger to pump head inner wall surface abrasion collapsing force; Simultaneously, chip is with the impeller High Rotation Speed, can produce localized hyperthermia, and being engineering plastics, the impeller of centrifugal pump and pump head make, this material is easily softening, melting at high temperature, and at high temperature this chip can stick to impeller surface position and cumulative, sticks to impeller upper surface chip when being stacked into to a certain degree and becomes with the pump head inner wall surface and contact friction, can scrap pump head is worn out at last.
In addition, the impeller intake position easily produces wing cavitation and cavitation corrosion.
The model utility content
The utility model embodiment technical problem to be solved is, a kind of centrifugal pump of high abrasion is provided.
The further technical problem to be solved of the utility model embodiment is, a kind of centrifugal pump that effectively weakens wing cavitation and cavitation corrosion is provided.
In order to solve the problems of the technologies described above, the utility model embodiment has proposed a kind of centrifugal pump, comprise the pump head housing and be located at rotationally the interior impeller of pump head housing, the position corresponding to the impeller center of pump head housing is provided with water intake, deviating from the inwall of water intake of pump head housing is embedded with wear-resistant material layer, and wear-resistant material layer is relative with impeller.
Further, offer groove on the described inner walls, described wear-resistant material layer is embedded in the groove.
Further, the area of described wear-resistant material layer is more than or equal to the frontal projected area of impeller.
Further, impeller a plurality of blades of comprising wheel hub and being centrosymmetric and distributing in the same side of wheel hub and around the central shaft of impeller.
Further, blade comprises the first seamed edge section corresponding to water inlet position, and the first seamed edge section is namely increased by mind-set edge in the impeller along its length direction gradually with respect to the height on plane, wheel hub place.
Further, blade also comprises the second seamed edge section that forms from the extension of the first seamed edge section, and the second seamed edge section is namely reduced by mind-set edge in the impeller along its length direction gradually with respect to the height on plane, wheel hub place.
Further, described centrifugal pump is the sandblast pump that is used for spray in the making process of circuit board.
The beneficial effect of the utility model embodiment's centrifugal pump is: be embedded wear-resistant material layer by adopting in deviating from the inwall of water intake of pump head housing, and the technological means that wear-resistant material layer is relative with impeller, thereby reached the abrasion collapsing force that weakens chip and sand grains, prolonged the working life of centrifugal pump; In addition, the blade structure that adopts the first seamed edge section to be increased gradually by mind-set edge in the impeller with respect to the height on plane, wheel hub place, thus effectively weakened wing cavitation and cavitation erosion.
Description of drawings
Fig. 1 is the pump head sectional view of the utility model embodiment's centrifugal pump.
Fig. 2 is the plan view of impeller of the utility model embodiment's centrifugal pump.
Embodiment
Need to prove, in the situation that do not conflict, embodiment and the feature among the embodiment among the application can mutually combine, and below in conjunction with the drawings and specific embodiments the utility model are described in further detail.
Please refer to Fig. 1 ~ Fig. 2, the utility model embodiment provides a kind of centrifugal pump, and particularly, described centrifugal pump is the sandblast pump that is used for spray in the making process of circuit board.The utility model embodiment's centrifugal pump structure has high wear resistance on the one hand; Wing cavitation and cavitation erosion effect are very faint on the other hand.
Described centrifugal pump comprises pump head housing 10 and is located at rotationally impeller 20 in the pump head housing 10, and wherein, pump head housing 10 is provided with water intake 40 corresponding to the position at impeller 20 centers, and impeller 20 is fixedly arranged on the pump shaft 30.
Deviating from the inwall of water intake 40 of pump head housing 10 offers groove 11, is embedded with wear-resistant material layer 50 in the groove 11, and the area of wear-resistant material layer 50 is more than or equal to the area of impeller 20 orthographic projections on inwall, and is positioned at impeller 20 tops and relative with impeller 20.In the present embodiment, groove 11 is stepped slot, and the high-abrasive material that wear-resistant material layer 50 adopts can be high density polyethylene (HDPE).Pump head housing 10 is to inlay wear-resistant material layer 50 on the position of described inwall corresponding to impeller 20 for not wear-resisting position only, and for pump head housing 10 all used high-abrasive material, materials were economized, and cost is low.
A plurality of blades 23 that impeller 20 comprises wheel hub 21 and is centrosymmetric and distributes in the same side of wheel hub 21 and around the central shaft of impeller 20.Wherein, impeller 20 can adopt high density polyethylene (HDPE) to make.Thereby, inserter and impeller 20 in the groove 11 all adopt high-density polyethylene material, this material is softer, has certain elasticity, and both can not melt each other mutually, when the sand granule impact arrives this softer body surface, its abrasion collapsing force weakens greatly, even there is chip to be abraded, also can't stick to impeller 20 upper surfaces, stopped vicious circle abrasion phenomenon, this kind structure has obviously prolonged the working life of centrifugal pump.
Blade 23 comprise extend corresponding to the first seamed edge section 230 of water intake 40 positions with from the first seamed edge section 230 232, the first seamed edge sections 230 of the second seamed edge section that form with respect to the height on plane, wheel hub place along its length direction namely by impeller 20 in the mind-set brim height increase gradually.Thereby, the arc transition structure of this kind blade 23, optimized the entry angle of impeller 20, strengthened high incidence, blade 23 water inlet positions are formed be similar to expansion bell-mouthed round table-like, make the current can be more smooth and easy, effectively weakened the wing cavitation of impeller 20 ingress and the destruction of cavitation corrosion, prolong the working life of impeller 20.
Blade 23 also comprises the second seamed edge section 232 that forms from 230 extensions of the first seamed edge section, the second seamed edge section 232 is namely reduced by mind-set edge in the impeller 20 along its length direction gradually with respect to the height on plane, wheel hub 21 place, the arc platy structure of the distortion of the described respective outer side edges blade 23 of the second seamed edge section 232, strengthen centrifugal pump delivery and lift from fluid-mechanics point of view, promoted economic benefit.
Although illustrated and described embodiment of the present utility model, for the ordinary skill in the art, be appreciated that in the situation that do not break away from principle of the present utility model and spirit can be carried out multiple variation, modification, replacement and modification to these embodiments, scope of the present utility model is limited by claims and equivalency range thereof.
Claims (7)
1. centrifugal pump, comprise the pump head housing and be located at rotationally the interior impeller of pump head housing, the position corresponding to the impeller center of pump head housing is provided with water intake, it is characterized in that, deviating from the inwall of water intake of pump head housing is embedded with wear-resistant material layer, and wear-resistant material layer is relative with impeller.
2. centrifugal pump as claimed in claim 1 is characterized in that, offers groove on the described inner walls, and described wear-resistant material layer is embedded in the groove.
3. centrifugal pump as claimed in claim 1 is characterized in that, the area of described wear-resistant material layer is more than or equal to the frontal projected area of impeller.
4. centrifugal pump as claimed in claim 1 is characterized in that, a plurality of blades that impeller comprises wheel hub and is centrosymmetric and distributes in the same side of wheel hub and around the central shaft of impeller.
5. centrifugal pump as claimed in claim 4 is characterized in that, blade comprises the first seamed edge section corresponding to water inlet position, and the first seamed edge section is namely increased by mind-set edge in the impeller along its length direction gradually with respect to the height on plane, wheel hub place.
6. centrifugal pump as claimed in claim 5 is characterized in that, blade also comprises the second seamed edge section that forms from the extension of the first seamed edge section, and the second seamed edge section is namely reduced by mind-set edge in the impeller along its length direction gradually with respect to the height on plane, wheel hub place.
7. such as each described centrifugal pump in the claim 1～6, it is characterized in that, described centrifugal pump is the sandblast pump that is used for spray in the making process of circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220310059 CN202690532U (en) | 2012-06-28 | 2012-06-28 | Centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220310059 CN202690532U (en) | 2012-06-28 | 2012-06-28 | Centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202690532U true CN202690532U (en) | 2013-01-23 |
Family
ID=47546158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220310059 Expired - Fee Related CN202690532U (en) | 2012-06-28 | 2012-06-28 | Centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202690532U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111458244A (en) * | 2019-12-17 | 2020-07-28 | 国网四川省电力公司映秀湾水力发电总厂 | Mixed-flow water turbine blade wing type abrasion test device |
-
2012
- 2012-06-28 CN CN 201220310059 patent/CN202690532U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111458244A (en) * | 2019-12-17 | 2020-07-28 | 国网四川省电力公司映秀湾水力发电总厂 | Mixed-flow water turbine blade wing type abrasion test device |
| CN111458244B (en) * | 2019-12-17 | 2023-02-28 | 国网四川省电力公司映秀湾水力发电总厂 | Mixed-flow water turbine blade wing type abrasion test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20130123 Termination date: 20200628 |