CN202756312U - Section type abrasion-resisting multistage pump - Google Patents
Section type abrasion-resisting multistage pump Download PDFInfo
- Publication number
- CN202756312U CN202756312U CN 201220344511 CN201220344511U CN202756312U CN 202756312 U CN202756312 U CN 202756312U CN 201220344511 CN201220344511 CN 201220344511 CN 201220344511 U CN201220344511 U CN 201220344511U CN 202756312 U CN202756312 U CN 202756312U
- Authority
- CN
- China
- Prior art keywords
- balancing
- balancing drum
- pump
- abrasion
- casing
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model belongs to the field of multistage centrifugal pumps, and relates to a section type abrasion-resisting multistage pump. The section type abrasion-resisting multistage pump comprises a pump body, a casing, an impeller and a vane. The casing is divided into a suction-in section, a middle section and a water-outlet section, and the middle section is combined with the impeller and the vane. A pump shaft is installed in the pump body through a balancing drum and a balancing sleeve, the balancing sleeve is arranged on the outer side of the balancing drum, and the balancing sleeve is connected with the water-outlet section of the casing in fastening mode. The balancing drum is in a frustum shape with small end up, and an inner hole structure of the balancing sleeve is in a frustum shape matched with the structure of the balancing drum. A material of the impeller, the vane and middle section protection plates of the casing is changed into silicon carbide, a silicon carbide ceramic layer is coated on the outer surface of the balancing drum, an aluminum oxide ceramic layer is coated on the inner surface of the balancing sleeve, and abrasion-resistant capacity of the multistage pump is greatly increased. A throttling gap of the balancing drum and the balancing sleeve is changed to be in a conical shape to compensate the throttling gap expanded by abrasion, and therefore, the section type abrasion-resisting multistage pump has good abrasion-resistant capacity.
Description
Technical field
The utility model belongs to the multistage centrifugal pump field, specifically, relates to a kind of sectional type abrasion-resistant multistage pump.
Background technique
Existing sectional type multi-stage pump is difficult to carry the medium with solid particle.Its reason just is that the Equilibrator of multistage pump is worn in a short period of time when the medium of pump conveyor belt solid particle, and it is large that the gap of balancing drum becomes, and balancing drum has lost the function of balancing axial thrust.The impeller of existing sectional type multi-stage pump and stator adopt wear resisting cast iron to make more in addition, and wear-resisting property is lower.
The model utility content
For solving the problems of the technologies described above, the utility model proposes a kind of sectional type abrasion-resistant multistage pump.
The technical solution of the utility model is: a kind of sectional type abrasion-resistant multistage pump, comprise the pump housing, housing, impeller and stator, and housing is divided into suction casing, stage casing and water exit end, and be combined with impeller, stator in the stage casing; By balancing drum and balance set pump shaft is installed in the pump housing, balance set is arranged at the balancing drum outside, and balance set and housing water exit end are fastenedly connected; Described balancing drum is up-narrow and down-wide frustoconic shape structure, and the balance set inner hole structure is the frustoconic shape that is complementary with described balancing drum structure.
The outer surface coating silicon carbide ceramic layer of described balancing drum, the internal surface of described balance set applies the aluminium sesquioxide ceramic layer.
Described impeller and stator all adopt the carbofrax material sintering to form.Stator choma and silicon carbide stator are connected as a single entity.
Described housing stage casing is provided with backplate, and backplate adopts carbofrax material to make.The stage casing material is inlayed the silicon carbide backplate for forging No. 20 steel, and stage casing choma and silicon carbide backplate are connected as a single entity.
Working principle of the present utility model is: the frustoconic shape structure of balancing drum and balance set is so that throttle clearance between the two is taper, and the taper microcephaly is the high pressure side, and the taper major part is low voltage side.When throttle clearance become because of wearing and tearing large after, at balance set high pressure side end face cushioning, balance set is moved to low voltage side, then throttle clearance diminishes again, makes the restore balance ability of axial force of balancing drum.
The beneficial effects of the utility model are:
1, the frustoconic shape structure of balancing drum and balance set so that throttle clearance between the two when becoming large because of wearing and tearing, can pass through at balance set high pressure side end face cushioning, can compensate the throttle clearance that enlarges because of wearing and tearing, thereby the ability of the bulging balancing axial thrust that restores balance improves abrasive resistance;
2, the outer surface coating silicon carbide ceramic layer of balancing drum, the internal surface of balance set applies the aluminium sesquioxide ceramic layer, has greatly strengthened the abrasive resistance of multistage pump, and its life-span is improved 2 times than the multistage pump that adopts the built-up welding balancing drum at least;
3, impeller and stator all adopt the carbofrax material sintering to form, and housing stage casing backplate adopts carbofrax material to make, and the wear-resisting property of constant pressure sintering silicon carbide is more than 2 times of wear resisting cast iron, has greatly strengthened the abrasive resistance of multistage pump.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Wherein, 1, suction casing, 2, impeller, 3, stator, 4, the stage casing, 5, backplate, 6, water exit end, 7, balance set, 8, balancing drum, 9, the pump housing, 10, pump shaft.
Embodiment
Specify the utility model below in conjunction with accompanying drawing.
Referring to Fig. 1, the utility model comprises the pump housing 9, housing, impeller 2 and stator 3, and housing is divided into suction casing 1, stage casing 4 and water exit end 6, stage casing 4 and impeller 2, stator 3 combinations; By balancing drum 8 and balance set 7 pump shaft 10 is installed in the pump housing 9, balance set 7 is arranged at balancing drum 8 outsides, and balance set 7 is fastenedly connected with housing water exit end 6; Balancing drum 8 is up-narrow and down-wide frustoconic shape structure, and balance set 7 inner hole structures are the frustoconic shape that is complementary with balancing drum 8 structures.The outer surface coating silicon carbide ceramic layer of balancing drum 8, the internal surface of balance set 7 applies the aluminium sesquioxide ceramic layer.Impeller 2 and stator 3 all adopt the carbofrax material sintering to form.Stator choma and silicon carbide stator 3 are connected as a single entity.Housing stage casing 4 is provided with backplate 5, and backplate 5 adopts carbofrax material to make.Stage casing 4 materials are No. 20 steel of forging, outer embedding silicon carbide backplate 5, and stage casing choma and silicon carbide backplate 5 are connected as a single entity.
The frustoconic shape structure of balancing drum 8 and balance set 7 is so that throttle clearance between the two is taper, and the taper microcephaly is the high pressure side, and the taper major part is low voltage side.When throttle clearance become because of wearing and tearing large after, at balance set 7 high pressure side end face cushionings, balance set 7 is moved to low voltage side, then throttle clearance diminishes again, makes the restore balance ability of axial force of balancing drum 8.
Claims (3)
1. sectional type abrasion-resistant multistage pump, comprise the pump housing (9), housing, impeller (2) and stator (3), housing is divided into suction casing (1), stage casing (4) and water exit end (6), stage casing (4) and impeller (2), stator (3) combination; By balancing drum (8) and balance set (7) pump shaft (10) is installed in the pump housing (9), balance set (7) is arranged at balancing drum (8) outside, and balance set (7) is fastenedly connected with housing water exit end (6); It is characterized in that, described balancing drum (8) is up-narrow and down-wide frustoconic shape structure, and balance set (7) inner hole structure is the frustoconic shape that is complementary with described balancing drum (8) structure.
2. sectional type abrasion-resistant multistage pump according to claim 1 is characterized in that, the outer surface coating silicon carbide ceramic layer of described balancing drum (8), and the internal surface of described balance set (7) applies the aluminium sesquioxide ceramic layer.
3. sectional type abrasion-resistant multistage pump according to claim 1 is characterized in that, described housing stage casing (4) is provided with backplate (5), and stage casing (4) choma and backplate (5) are connected as a single entity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220344511 CN202756312U (en) | 2012-07-16 | 2012-07-16 | Section type abrasion-resisting multistage pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220344511 CN202756312U (en) | 2012-07-16 | 2012-07-16 | Section type abrasion-resisting multistage pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202756312U true CN202756312U (en) | 2013-02-27 |
Family
ID=47735497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220344511 Expired - Lifetime CN202756312U (en) | 2012-07-16 | 2012-07-16 | Section type abrasion-resisting multistage pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202756312U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443399A (en) * | 2016-01-07 | 2016-03-30 | 上海电气凯士比核电泵阀有限公司 | Self-cooling electric auxiliary water feeding pump |
-
2012
- 2012-07-16 CN CN 201220344511 patent/CN202756312U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443399A (en) * | 2016-01-07 | 2016-03-30 | 上海电气凯士比核电泵阀有限公司 | Self-cooling electric auxiliary water feeding pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2797164C (en) | Centrifugal pump for slurries | |
| CN103225624A (en) | Double-casing symmetric type radial subdivision multiple-stage centrifugal pump | |
| CN201265551Y (en) | Abrasion-proof slurry pump | |
| CN202756312U (en) | Section type abrasion-resisting multistage pump | |
| CN202811523U (en) | 550NZJA-MR slurry pump | |
| CN101749251A (en) | Scroll casing type radial split three-grade process pump | |
| CN201180662Y (en) | Slurry pump | |
| CN214837337U (en) | Novel wear-resisting slurry pump for mineral separation | |
| CN202991645U (en) | Abrasion-resisting centrifugal pump | |
| CN203230633U (en) | Forward and reverse water flow diverter for self-balancing multistage centrifugal pump | |
| CN215672726U (en) | Horizontal middle-open type double-shell high-lift multistage slurry pump | |
| CN206111656U (en) | Centrifugal pump of innovative blade | |
| CN101943184A (en) | Hydrodynamic and equilibrium combined seal for impeller of slurry pump | |
| CN103953578A (en) | Impeller for coal water slurry pump | |
| CN102720696A (en) | Preheating water pump | |
| CN207583672U (en) | Throttling balancing drum and set | |
| CN100491741C (en) | Improved axial force balance mechanism of centrifugal pump impeller | |
| CN206625981U (en) | A kind of wear-resisting process pump | |
| CN204253452U (en) | High-temperature and high-pressure wearable pump | |
| CN104154072A (en) | Improved structure of hydraulic cylinder of hydraulic loading system for mill | |
| CN213016922U (en) | Multistage centrifugal pump with double balance drums | |
| CN205895610U (en) | Horizontal sediment stuff pump | |
| CN107620736A (en) | A kind of twayblade semi-open type sewage impeller of pump Hydraulic Design Method | |
| CN204099259U (en) | A kind of wear resistant corrosion resistant double casing volute pump | |
| CN203081743U (en) | Gear pump with inner cavity coating layer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20190523 Granted publication date: 20130227 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20220523 Granted publication date: 20130227 |
|
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20220523 Granted publication date: 20130227 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130227 |