CN203926123U - A kind of stock pump impeller that reduces pressure surge - Google Patents
A kind of stock pump impeller that reduces pressure surge Download PDFInfo
- Publication number
- CN203926123U CN203926123U CN201420311574.6U CN201420311574U CN203926123U CN 203926123 U CN203926123 U CN 203926123U CN 201420311574 U CN201420311574 U CN 201420311574U CN 203926123 U CN203926123 U CN 203926123U
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- blade
- edge
- pump
- impeller
- pressure surge
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Abstract
A kind of stock pump impeller that reduces pressure surge, belong to impeller technical field, adopt three or three multiple-blade patterns with upper blade, it is characterized in that described blade comprises entrance limit, Exit-edge, blade inlet edge, trailing edge, blade profile adopts space curved surface distorted-structure, and the molded line on its entrance limit adopts arcuate structure, Exit-edge to adopt the project organization that is angle with axial plane; Blade inlet edge coordinates with rear wearing plate and forms respectively cooperation formation runner with front wearing plate, trailing edge.This patent can reduce import to be impacted, weakens and opening vortex, the separation of flow of having avoided the negative angle of attack to form, thereby can reduce pressure pulse, reduce quality and stability that paper longitudinal basis weight fluctuates, improves slurry, reduce obstruction, the raising through-current capability of pulp fiber, be conducive to improve paper product Quality and yield, improve the overall operation performance of pump, improve the anti-cavitation ability of pump, the working life of reducing running noises and energy consumption, reduction equipment maintenance cost and prolongation pump.
Description
Technical field
The utility model belongs to impeller technical field, is specifically related to a kind of stock pump impeller with the reduced pressure surge of full-open type, one step single sucking structure.
Background technique
Paper pulp streaming and paper sheet formation process are hydrodynamic processes, and it is the basis that high-quality is shaped that good stream send, and stock pump is that stream the most used in paper-making pulping send equipment; Along with the development of paper technology, the raising of paper machine speed and fabric width, has proposed requirements at the higher level to paper pulp streaming and formation technique equipment, thereby requires the applicable craft scope of stock pump comparatively broad.It is generally acknowledged, the quantitative fluctuation of page can be divided into transversal wave movement and longitudinally fluctuation, mould is that design or misoperation by cloth slurry house steward and all the other relevant devices causes to fluctuation, and longitudinally fluctuation is that pressure surge by pulp feeding system causes, and is mainly starching pump and pressurized screen.
Characteristics of Centrifugal Pulp Pump is applied in constant part, the paper pulp component that requires grout outlet evenly, stable, the flow box level stability of concentration stabilize, velocity of approach etc.The Characteristics of Centrifugal Pulp Pump that in prior art, constant part is used mainly contains low pulse starching pump and unshrouded impeller stock pump, in novel papermaking technique, increased this element of flow box, can make along papermaking fabric width direction distributed slurry equably, guarantee that to a certain extent pressure, speed, flow are even, make fiber alignment controlled, but the general constant part that is all applicable to larger flow of this element, the with it supporting low pulse fan pump of double-sucking type that is.Yet domestic some papermaking enterprises of also depositing, constant part is all without flow box design, or each operating point flow is less, all cannot select fan pump, when common single suction unshrouded impeller stock pump is applied to sizing technique, due to the fluctuation of pressure, the irregular or disconnected paper phenomenon of paper product thickness causing is not within minority.Thereby from improving the Structure Mechanism of unshrouded impeller stock pump, reduce the pressure pulse of stock pump, can solve preferably pulp feeding system pressure surge impact, reduce the fluctuation of paper longitudinal basis weight, be conducive to improve paper product Quality and yield, reduce the noise of pump, improve the efficiency of pump, extend the working life of pump.
Model utility content
The utility model is intended to provide a kind of stock pump impeller technological scheme that reduces pressure surge by improvement blade structure, to overcome problems of the prior art.
Described a kind of stock pump impeller that reduces pressure surge, adopt three or three multiple-blade patterns with upper blade, it is characterized in that described blade comprises entrance limit, Exit-edge, blade inlet edge, trailing edge, blade profile adopts space curved surface distorted-structure, and the molded line on its entrance limit adopts arcuate structure, Exit-edge to adopt the project organization that is angle with axial plane; Blade inlet edge coordinates with rear wearing plate and forms respectively cooperation formation runner with front wearing plate, trailing edge.
Described a kind of stock pump impeller that reduces pressure surge, the thickness that it is characterized in that described blade adopts the structure being increased progressively to the outlet end of blade by the entry end of blade, and thin one-tenth approximate curve structure is repaiied on described entrance limit.
Described a kind of stock pump impeller that reduces pressure surge, is characterized in that being equipped with one group of equalizing orifice on the back shroud of impeller, and equalizing orifice adopts the quantity of through-hole structure and equalizing orifice consistent with the number of blade.
Described a kind of stock pump impeller that reduces pressure surge, is characterized in that described front wearing plate is arranged on the pump housing, and described rear wearing plate is arranged on pump cover.
Above-mentioned a kind of stock pump impeller that reduces pressure surge, novel, rational in infrastructure, blade profile adopts space curved surface distorted-structure, the molded line on entrance limit adopts arcuate structure, Exit-edge adopts the project organization that is angle with axial plane, can reduce import impacts, weaken and opening vortex, the separation of flow of having avoided the negative angle of attack to form, thereby can reduce pressure pulse, reduce the fluctuation of paper longitudinal basis weight, improve quality and the stability of slurry, reduce the obstruction of pulp fiber, improve through-current capability, be conducive to improve paper product Quality and yield, can reduce the amplitude of periodic pressure fluctuation simultaneously, improve the overall operation performance of pump, improve the anti-cavitation ability of pump, reduce running noises and energy consumption, reduce the working life of equipment maintenance cost and prolongation pump.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is the plan structure schematic diagram of Fig. 1;
Fig. 3 is the utility model mounting structure schematic diagram;
In figure: wearing plate before wearing plate, 7-after 1-entrance limit, 2-blade inlet edge, 3-trailing edge, 4-Exit-edge, 5-equalizing orifice, 6-.
Embodiment
Now, in conjunction with Figure of description, describe embodiment of the present utility model in detail:
As shown be a kind of stock pump impeller that reduces pressure surge, belong to the one step single sucking impeller of full-open type structure, adopt three or three multiple-blade patterns with upper blade; Each blade comprises entrance limit 1, Exit-edge 4, blade inlet edge 2, trailing edge 3, and blade profile adopts space curved surface distorted-structure; The molded line on its entrance limit 1 adopts arcuate structure, Exit-edge 4 to adopt the project organization that is angle with axial plane, and the blade inlet edge 2 of Exit-edge 4, trailing edge 3 lay respectively at two different axial planes; The thickness of blade adopts the structure being increased progressively to the outlet end of blade by the entry end of blade, and thin one-tenth approximate curve structure is repaiied on described entrance limit 1.On the back shroud of impeller, be equipped with one group of equalizing orifice 5, equalizing orifice 5 adopts the quantity of through-hole structure and equalizing orifice 5 consistent with the number of blade, equalizing orifice 5 can make the axial force of impeller obtain effective balance, and the smoothness that has guaranteed slurries is not stopped up and impeller play not, keeps working pressure continual and steady.Blade inlet edge 2 coordinates with rear wearing plate 6 and forms respectively cooperation formation runner with front wearing plate 7, trailing edge 3; described front wearing plate 7, rear wearing plate 6 adopt respectively high-abrasive material to make; corresponding being arranged on the pump housing, pump cover; the large part of this class of the pump housing and pump cover is protected, can effectively overcome position serious wear that impeller front and rear cover plate in prior art coordinates, change the pump housing and pump cover cost high and affect the problems such as machine life.
When slurry enters stock pump impeller eye, especially under off-design behaviour, near flowing impeller eye is very large on the impact of performance of centrifugal pump, the entrance limit 1 of blade is designed to arc, make slurry produce different inlet velocities at blade inlet limit 1 different parts, improve the anti-cavitation ability of pump, and reduce import impact, thereby reach pressure buffer effect; This design is dispersing pulp fiber effectively, prevents that fiber flocculation is at entrance, in addition, because thin one-tenth approximate curve is repaiied on entrance limit, reduces blade import thickness, reduces hydraulic loss, improves the hydraulic efficiency of pump.In addition, the wearing and tearing of stock pump impeller have similarity substantially, generally the wearing and tearing at impeller outlet place are all more serious than other places, in this patent, the different back sides Thickness Design of impeller blade is become to different, by the entry end of blade, the outlet end to blade increases progressively the thickness of blade, can extend like this life-span of whole impeller.
The blade inlet edge of the exit edge of blade of impeller 42, trailing edge 3 are designed to be located to two different axial planes, form the project organization that Exit-edge 4 and axial plane are angle, make slurry leave impeller with different speed and different angles, weaken and opening vortex, and the separation of flow of having avoided the negative angle of attack to form, thereby can reduce pressure pulse, improve quality and the stability of slurry, laboratory data shows simultaneously, and the design method of Exit-edge 4 different axial planes can make again the efficiency of pump increase.
This patent adopts blade quantity to be more than or equal to the multiple-blade pattern of three, can reduce the amplitude of periodic pressure fluctuation, improves pump performance, and reduces the noise of pump, and adopts the blade wheel structure of full-open type, can reduce obstruction, the raising through-current capability of pulp fiber.
Claims (4)
1. the stock pump impeller that can reduce pressure surge, adopt three or three multiple-blade patterns with upper blade, it is characterized in that described blade comprises entrance limit (1), Exit-edge (4), blade inlet edge (2), trailing edge (3), blade profile adopts space curved surface distorted-structure, and the molded line on its entrance limit (1) adopts arcuate structure, Exit-edge (4) to adopt the project organization that is angle with axial plane; Blade inlet edge (2) coordinates with rear wearing plate (6) and forms respectively cooperation formation runner with front wearing plate (7), trailing edge (3).
2. a kind of stock pump impeller that reduces pressure surge as claimed in claim 1, the thickness that it is characterized in that described blade adopts the structure being increased progressively to the outlet end of blade by the entry end of blade, and thin one-tenth approximate curve structure is repaiied on described entrance limit (1).
3. a kind of stock pump impeller that reduces pressure surge as claimed in claim 1, is characterized in that being equipped with one group of equalizing orifice (5) on the back shroud of impeller, and equalizing orifice (5) adopts the quantity of through-hole structure and equalizing orifice (5) consistent with the number of blade.
4. a kind of stock pump impeller that reduces pressure surge as claimed in claim 1, is characterized in that described front wearing plate (7) is arranged on the pump housing, and described rear wearing plate (6) is arranged on pump cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420311574.6U CN203926123U (en) | 2014-06-12 | 2014-06-12 | A kind of stock pump impeller that reduces pressure surge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420311574.6U CN203926123U (en) | 2014-06-12 | 2014-06-12 | A kind of stock pump impeller that reduces pressure surge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203926123U true CN203926123U (en) | 2014-11-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420311574.6U Expired - Fee Related CN203926123U (en) | 2014-06-12 | 2014-06-12 | A kind of stock pump impeller that reduces pressure surge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203926123U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355271A (en) * | 2017-07-25 | 2017-11-17 | 航天推进技术研究院 | A kind of organic Rankine bottoming cycle multikilowatt TRT |
| CN109026825A (en) * | 2018-09-17 | 2018-12-18 | 浙江泽浩泵业有限公司 | A kind of water pump vane structure |
| CN109854530A (en) * | 2019-03-19 | 2019-06-07 | 苏州横海信息科技有限公司 | A kind of efficient LNG delivery pump blade wheel |
| CN112879341A (en) * | 2021-01-22 | 2021-06-01 | 兰州理工大学 | High-cavitation-resistance backswept and split-flow offset type spiral centrifugal impeller |
-
2014
- 2014-06-12 CN CN201420311574.6U patent/CN203926123U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355271A (en) * | 2017-07-25 | 2017-11-17 | 航天推进技术研究院 | A kind of organic Rankine bottoming cycle multikilowatt TRT |
| CN107355271B (en) * | 2017-07-25 | 2023-06-09 | 航天推进技术研究院 | Organic Rankine cycle kilowatt-level power generation device |
| CN109026825A (en) * | 2018-09-17 | 2018-12-18 | 浙江泽浩泵业有限公司 | A kind of water pump vane structure |
| CN109854530A (en) * | 2019-03-19 | 2019-06-07 | 苏州横海信息科技有限公司 | A kind of efficient LNG delivery pump blade wheel |
| CN112879341A (en) * | 2021-01-22 | 2021-06-01 | 兰州理工大学 | High-cavitation-resistance backswept and split-flow offset type spiral centrifugal impeller |
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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 |
Granted publication date: 20141105 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |