CN200989323Y - Centrifugal coal slurry pump with double vane structure - Google Patents
Centrifugal coal slurry pump with double vane structure Download PDFInfo
- Publication number
- CN200989323Y CN200989323Y CN 200620048220 CN200620048220U CN200989323Y CN 200989323 Y CN200989323 Y CN 200989323Y CN 200620048220 CN200620048220 CN 200620048220 CN 200620048220 U CN200620048220 U CN 200620048220U CN 200989323 Y CN200989323 Y CN 200989323Y
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- CN
- China
- Prior art keywords
- impeller
- pump
- resistance
- coal slurry
- envelope
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- Expired - Lifetime
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Abstract
The utility model relates to a centrifugal coal-slurry pump with a double-quench impeller structure, in particular to a cantilever-type structural single-suction vertical pump and consists essentially of a pump base, a pump frame, an impeller, a front cover plate, a rear cover plate, a bearing bracket stand, a rear heating cavity and a stuffing baffle, wherein the impeller is an open-type impeller. The impeller side adjacent to the rear cover plate is provided with a back blade. The impeller back is connected with the double-quench impeller in series and the periphery of the double-quench impeller is provided with a quenching partition plate, thus forming a double-quench impeller structure. The utility model enhances the seal reliability greatly, reduces the pressure in front of the axle seal and then prevents the coal slurry deposition effectively, thereby boasting a value of application.
Description
Technical field
The utility model relates to a kind of FLUID TRANSPORTATION pump, relates in particular to a kind of centrifugal coal slurry pump with two resistance envelope blade wheel structures.
Background technique
Centrifugal type slurry pump can be used to carry the solid mixture that abrasion is more intense, contain the strong solid particle, as ore pulp, lime-ash, cement slurry, mortar, grit etc.But existing centrifugal type slurry pump allows impurity content usually between 3～5%, and in power plant desulfurization technology, carbon residue content is up to 30%, and this is the at present domestic and international the highest operating mode of impurity content.And in " coal system oil " direct liquefaction commercial plant, solid content is up to 50%wt in the coal slurry, and existing centrifugal type slurry pump causes the coal slurry alluvial easily because sealing is bad.
Summary of the invention
The purpose of this utility model provides a kind of centrifugal coal slurry pump with two resistance envelope blade wheel structures exactly for the sealing problem that solves the slag stock pump.
The purpose of this utility model is achieved in that a kind of centrifugal coal slurry pump with two resistance envelope blade wheel structures, be cantilever structure one step single sucking vertical pump, mainly comprise pump seat, pump bracket, impeller, front shroud, back shroud, back heating cavity and filler baffle plate, be characterized in, described impeller is a unshrouded impeller, nearly back shroud one side at impeller is provided with back blade, be in series with two resistance envelope impellers at the rear portion of impeller, be provided with resistance packing plate in the periphery of two resistance envelope impellers, constitute two resistance envelope blade wheel structures.
Described filler baffle plate is provided with the flushing oil import, and the flushing oil inlet tube is installed in the flushing oil import.
Between described back shroud and the resistance packing plate, and be provided with stop pin between resistance packing plate and the filler baffle plate, whole two resistance envelope blade wheel structures by after heating cavity and back shroud and bearing bracket fastening.
The centrifugal coal slurry pump of the two resistance envelope of the utility model band blade wheel structure has improved the reliability of sealing greatly owing to be provided with pair resistance envelope blade wheel structures, has reduced the pressure before axle seals, and can effectively prevent the coal slurry alluvial, has use value.
Description of drawings
Fig. 1 is the general structure cross-sectional schematic of the centrifugal coal slurry pump of the two resistance envelope of the utility model band blade wheel structure;
Fig. 2 is the right side view of coal slurry pump shown in Figure 1;
Fig. 3 is the two resistance envelope blade wheel structure schematic representation in the utility model.
Embodiment
Referring to Fig. 1, Fig. 2, the centrifugal coal slurry pump of the two resistance envelope of band of the present utility model blade wheel structure comprises pump seat 1, intake pipe 2, pad 3, front shroud 4, water exit end 5, impeller 6, back shroud 7, resistance packing plate 8, filler 9, packing ring 10, axle sleeve 11, bearing bracket 12, axle sleeve 13, angular contact ball bearing 14, electric machine support 15, coupling parts 16, water inlet heating chamber inlet tube 17, preceding heating chamber is imported and exported pipe 18, middle heating chamber is imported and exported pipe 19, motor 20, locking nut 21, bearing cap 22, bearing support 23, axle 24, roller bearing 25, bearing cap 26, Gland 27, flushing oil inlet tube 28, filler 29, back heating cavity 30, filler baffle plate 31, resistance envelope impeller 32, back heating chamber is imported and exported pipe 33, adjust pad 34, pump bracket 35 and water inlet heating chamber outer pipe 36.
Consider the solid matter that the slag stock pump is carried, the pump flow passage components are had very strong abrasion, thus the selecting for use of reasonable structural design and overcurrent part material, can guarantee the reliable running of pump, reduce the rate of wear of overcurrent component, prolong the working life of pump.Impeller 6 in the utility model and resistance envelope impeller 32 adopt nickel Hart alloys, and front shroud 4, water exit end 5, back shroud 7 adopt KmTBCr26.Because the gold machining manufacturability of high-abrasive material is relatively poor, direct and the contacted part of fed sheet of a media often need be changed again, so the utility model is designed to double-layer shell structure with it, by tolerance fit and bolton, whole flow passage components can reduce wear part like this by pump seat 1, pump bracket 35 and bearing bracket 12.
Cooperation is referring to Fig. 3, and in order to prevent to leak and the alluvial of coal dust, the utility model is designed to unshrouded impeller with impeller 6, at its back shroud place back blade 61 is set, by the back blade action of centrifugal force, a large amount of solid matters is radially thrown away, avoided a large amount of alluvials between pump and axle envelope.
Continuation is referring to Fig. 3, and the utility model has also been connected behind impeller 6 two and hindered envelope impellers 32, and in the peripheries of two resistance envelope impellers 32 resistance packing plate 8 is set, the two resistance envelope of formation blade wheel structures.This structure further block media is sealed flowing of direction to axle, reduces axle envelope place pressure, prevents alluvial.
The utility model also is provided with the flushing oil import on filler baffle plate 31, flushing oil inlet tube 28 is installed in the flushing oil import.Before the termination of pumping, inject flushing oil by flushing oil inlet tube 28 and wash, can prevent the coal slurry alluvial.
The utility model and is provided with stop pin 37 between resistance packing plate 8 and the filler baffle plate 31 also between back shroud 7 and resistance packing plate 8, and whole two resistance envelope blade wheel structures are fastening by back heating cavity 30 and back shroud 7 and bearing bracket 12.
Axle envelope of the present utility model adopts packing seal, and filler 29 quick releases are convenient for changing filler.
The utility model is applicable to chemical industry and coal liquefaction field impurity content height, the place that temperature is high.Also can be applicable to the high occasions of impurity content such as mine, power station, papermaking.
Claims (3)
1, a kind of centrifugal coal slurry pump with two resistance envelope blade wheel structures, be cantilever structure one step single sucking vertical pump, mainly comprise pump seat, pump bracket, impeller, front shroud, back shroud, back heating cavity and filler baffle plate, it is characterized in that: described impeller is a unshrouded impeller, nearly back shroud one side at impeller is provided with back blade, be in series with two resistance envelope impellers at the rear portion of impeller, be provided with resistance packing plate, constitute two resistance envelope blade wheel structures in the periphery of two resistance envelope impellers.
2, the centrifugal coal slurry pump of the two resistance envelope of band as claimed in claim 1 blade wheel structure, it is characterized in that: described filler baffle plate is provided with the flushing oil import, and the flushing oil inlet tube is installed in the flushing oil import.
3, the centrifugal coal slurry pump of the two resistance envelope of band as claimed in claim 1 or 2 blade wheel structure, it is characterized in that: between described back shroud and the resistance packing plate, and be provided with stop pin between resistance packing plate and the filler baffle plate, whole two resistance envelope blade wheel structures by after heating cavity and back shroud and bearing bracket fastening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620048220 CN200989323Y (en) | 2006-11-28 | 2006-11-28 | Centrifugal coal slurry pump with double vane structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620048220 CN200989323Y (en) | 2006-11-28 | 2006-11-28 | Centrifugal coal slurry pump with double vane structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200989323Y true CN200989323Y (en) | 2007-12-12 |
Family
ID=38940360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620048220 Expired - Lifetime CN200989323Y (en) | 2006-11-28 | 2006-11-28 | Centrifugal coal slurry pump with double vane structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200989323Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102374188A (en) * | 2011-10-24 | 2012-03-14 | 山东双轮股份有限公司 | Centrifugal pump |
| US10287522B2 (en) | 2013-01-31 | 2019-05-14 | General Electric Company | System and method for preparing coal water slurry |
-
2006
- 2006-11-28 CN CN 200620048220 patent/CN200989323Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102374188A (en) * | 2011-10-24 | 2012-03-14 | 山东双轮股份有限公司 | Centrifugal pump |
| CN102374188B (en) * | 2011-10-24 | 2013-04-10 | 山东双轮股份有限公司 | Centrifugal pump |
| US10287522B2 (en) | 2013-01-31 | 2019-05-14 | General Electric Company | System and method for preparing coal water slurry |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: CO-PATENTEE TO: SHENHUA COAL OIL RESEARCH CENTER CO. ¬ |
|
| CU01 | Correction of utility model patent |
Correction item: Co-patentee Correct: Shenhua Coal Oil Research Center Co Ltd Number: 50 Page: The title page Volume: 23 |
|
| CU03 | Correction of utility model patent gazette |
Correction item: Co-patentee Correct: Shenhua Coal Oil Research Center Co Ltd Number: 50 Volume: 23 |
|
| ERR | Gazette correction |
Free format text: CORRECT: CO-PATENTEE; FROM: NONE ¬ TO: SHENHUA COAL OIL RESEARCH CENTER CO. ¬ |
|
| CX01 | Expiry of patent term |
Granted publication date: 20071212 |
|
| EXPY | Termination of patent right or utility model |