CN2470587Y - Low-wear slag-slurry pump - Google Patents
Low-wear slag-slurry pump Download PDFInfo
- Publication number
- CN2470587Y CN2470587Y CN 01213219 CN01213219U CN2470587Y CN 2470587 Y CN2470587 Y CN 2470587Y CN 01213219 CN01213219 CN 01213219 CN 01213219 U CN01213219 U CN 01213219U CN 2470587 Y CN2470587 Y CN 2470587Y
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- pump
- impeller
- impeller blade
- angle
- inlet
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Abstract
Disclosed is a slow-wear slurry pump. The inlet fluid angle of the impeller blade is 15-30 degrees and the outlet fluid angle is 10-25 degrees. The number of the impeller blade is 2-3. The centers of the impellers run out to the entrance of the pump. A mild turning passage is formed between the entrance and the exit of the pump. The wrap angle of the impeller blade is 260-340 degrees and the inlet edge of the impeller blade is extended towards the entrance of the pump. The flow difference of solid and liquid mediums in the pump and the impact frictional reacting force by solid materials to the flow-by parts of the pump can be largely reduced, and the service lives of the flow-by parts of the pump can be improved.
Description
The utility model relates to the slag stock pump of carrying high abrasion slurry.
Present both at home and abroad all kinds of slag stock pumps (comprising ore pulp pump, lime-ash slurry, sand pump etc.) that generally use, its waterpower design all are on the basis of general clear water centrifugal pump, carry out according to the rerum natura of institute's conveying material that the boundary conditions correction obtains.This pump mainly is by the pump wetted surfaces solid material to be carried out positive action to come slurry body, therefore its wear-resisting property is very poor, have to adopt the high-wear resistance material to be made, make that the manufacture cost of pump is very high, both made like this, because the abrasion of this pump is extremely inhomogeneous, bring out cavitation at the serious position of abrasion toward contact simultaneously, make the local damage of pump especially serious, therefore the working life of pump is short, the use occasion of some high anti-corrosion effects, the user claims this pump for " week pump ", promptly uses week only in life-span.Therefore not only device fabrication cost height of this pump, and the annual required parts that change is especially up to 5～10 times of the own cost of equipment.The existing main deficiency of slag stock pump is: the flow angle of pump blade is big, and (import is generally 30～50 degree, outlet is generally 20～35 degree), solid material is bigger to the blade surface angle of shock, so solid material is also big to the abrasive acrion power of blade surface, causes the pump impeller serious wear.The area of passage of impeller from import to outlet sharply increases, cause flow rate of liquid to reduce, and in this process, solid material is because action of inertia still keeps higher flow velocity, to have formed very big flow velocity not good enough with liquid, therefore its percussion to blade surface is bigger, has aggravated the wearing and tearing of impeller and volute chamber etc.Inlet edge of impeller blade is far away from import, and many places are in the racing crook, and the impeller streamline is 90 degree angles from the import to the outlet, and the turning of liquid stream in impeller is rapid, so pump impeller and front pump cover (or apron plate) are especially serious in the position wearing and tearing of turning rapid.Often wear and tear not for a long time in other position, and this position is worn out, causes the pump life-span sharply to descend.The number of blade many (being generally 5～7), impeller channel is narrow, therefore stops up easily when carrying large particle or high concentration material, often must not dredge with shutting down, and labor intensity is big, and manufacturing efficiency is low.
The purpose of this utility model aim to provide a kind of can reduce significantly solid liquid media in pump mobile difference and solid material to the flow passage components of pump and the friction effect power of impact, improve the pump flow passage components low wearing and tearing slag stock pump in working life.
The purpose of this utility model realizes by following manner:
The utility model comprises impeller, the pump housing, apron plate, front pump cover, back backplate, rear pump cover, sprung parts, main shaft, impeller blade import flow angle is 15～30 degree, the outlet flow angle is 10～25 degree, the impeller blade number is 2～3, the center of impeller is to the projection of the position of pump inlet, from forming a mild turning channel between pump inlet and the pump discharge, the impeller blade cornerite is 260～340 degree, and inlet edge of impeller blade extends to the import of pump.
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is the vertical view of common slurry pump impeller.
Fig. 2 is common slurry pump impeller forward view.
Fig. 3 is the utility model structural representation.
Fig. 4 is the vertical view of the utility model impeller.
Fig. 5 is the utility model impeller forward view.
Fig. 6 is that the utility model and common slag stock pump flow one head curve compare.
Shown in accompanying drawing 3,4,5, the utility model comprises impeller 1, the pump housing 2, apron plate 3, front pump cover 4, back backplate 5, rear pump cover 6, sprung parts 7, main shaft 8, blade 13.Impeller blade import flow angle β
1Angle is controlled at 15～30 degree, impeller blade outlet flow angle β
2The angle is controlled at 10～25 degree, and the number of impeller blade 13 is 2～3, and the impeller blade wrap angle sigma is that inlet edge of impeller blade 10 extends to the import of pump in 260～340 degree, near pump inlet 11.The center of impeller 1 is to the projection of the position of pump inlet 11, and and pump inlet 11 and pump discharge 12 between form a mild turning channel 9.
The inlet diameter of the utility model impeller is 1.2～1.4 times of common slag stock pump, has increased the inlet diameter of impeller, thereby reduces the flow velocity of medium in import.
The utility model is owing to adopt above-mentioned particular structure, can reduce solid liquid media significantly in the mobile difference of pump and solid material working life to the pump flow passage components, and efficient simultaneously obviously improves the energy-saving effect highly significant.
Compare with common slag stock pump, the utlity model has following tangible advantage:
The flow angle of pump impeller blade reduces (the import flow angle only is 15～30 degree, and the outlet flow angle only is 10～25 degree) greatly, thereby makes solid material reduce greatly the angle of shock of blade surface, therefore significantly reduces the wearing and tearing of blade.
Increased the impeller inlet diameter, thereby reduced the flow velocity of medium in import, make impeller significantly reduce to the change in flow that goes out from import, the speed difference that solid liquid media flows is also very little, thereby solid material obviously reduces the percussion on impeller and pump housing surface, significantly reduced the wearing and tearing of impeller and volute chamber.
Impeller is mild from the import to the exit turn, has eliminated the phenomenon of turn sharp, and the wearing and tearing of pump are tending towards evenly, and significantly prolong working life.
Impeller blade number few (only being 2～3), impeller channel is wide, and no plugging performance is fine, and the equivalent diameter of the maximum solid that can pass through can reach 40% of pump inlet diameter.
Referring to Fig. 6, L
1Be curve of the present utility model, L
2Be the curve of common slag stock pump, X is a flow, and Y is a lift, and as can be seen from the figure, when the lift luffing was H, flow luffing of the present utility model only was Q
1, and the flow luffing of common slag stock pump is up to Q
2, Q
2Be far longer than Q
1Thereby the blade flow angle is little, and the flow lift curve steepening of pump changes or pipeline is local when stopping up when the device lift of pump pipeline system like this, and the changes in flow rate of pump is less, helps normal stable operation.
The inlet side of impeller blade is extended to pump inlet, and the cavitation performance of pump obviously improves.Because the mobile of the interior liquid-solid two-phase medium of pump tends to be steady evenly, local cavitation phenomenons is eliminated simultaneously.Cavitation is also eliminated substantially to the aggravation effect of wearing and tearing, and the working life of pump is longer, and the pump practical efficiency obviously improves simultaneously, and energy-saving effect is remarkable.
Common slag stock pump and comparison of the present utility model:
| Characteristic | Common slag stock pump | The utility model | |
| Hydraulic performance | Solid material is to the angle of shock of blade | Greatly | Little |
| Inlet velocity | High | Low | |
| From the import to the exit velocity, change | Sharply diminish | Change steadily | |
| Cavitation performance | Difference | Good | |
| Pump work efficient | Lower | Higher | |
| The anti-plugging performance | Difference | Good | |
| Velocity flow profile in the impeller | Movement disorder and with the whirlpool that refluxes | Mobile uniform and stable, the whirlpool of backflow seldom | |
| The flow lift curve shape | Changes in flow rate greatly when gently, lift changed | Changes in flow rate was little when suddenly, lift changed | |
| Wear-resisting property | Solid material is to the impact wear of wetted surfaces | Greatly | Little |
| Concentrated wear | Seriously | Wearing and tearing evenly | |
| Cavitation is to the aggravation effect of abrasion | Seriously | Slightly, do not exist substantially | |
| Pump working life | Short | Long |
Claims (2)
1, a kind of low wearing and tearing slag stock pump comprises impeller (1), the pump housing (2), apron plate (3), front pump cover (4), back backplate (5), rear pump cover (6), sprung parts (7), main shaft (8), and blade (13) is characterized in that impeller blade import flow angle β
1Angle is controlled at 15～30 degree, impeller blade outlet flow angle β
2The angle is controlled at 10～25 degree, and the number of impeller blade (13) is 2～3, and the impeller blade wrap angle sigma is that inlet edge of impeller blade (10) extends to the import of pump in 260～340 degree, near pump inlet (11).The center of impeller (1) is to the position projection of pump inlet (11), and and pump inlet (11) and pump discharge (12) between form a mild turning channel (9).
2, a kind of low wearing and tearing slag stock pump as claimed in claim 1, the inlet diameter that it is characterized in that impeller is 1.2～1.4 times of common slag stock pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01213219 CN2470587Y (en) | 2001-01-05 | 2001-01-05 | Low-wear slag-slurry pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01213219 CN2470587Y (en) | 2001-01-05 | 2001-01-05 | Low-wear slag-slurry pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2470587Y true CN2470587Y (en) | 2002-01-09 |
Family
ID=33632252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01213219 Expired - Fee Related CN2470587Y (en) | 2001-01-05 | 2001-01-05 | Low-wear slag-slurry pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2470587Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988505A (en) * | 2009-08-04 | 2011-03-23 | 江苏华机环保设备有限责任公司 | Double-door bagasse pump |
| CN103758781A (en) * | 2013-07-31 | 2014-04-30 | 山东博丰利众化工有限公司 | Centrifugal circulating water pump of sulphur acid making device |
| CN105179307A (en) * | 2015-10-13 | 2015-12-23 | 江苏国泉泵业制造有限公司 | Wear-resistance centrifugal slurry pump impeller hydraulic design method |
| CN105927595A (en) * | 2016-06-28 | 2016-09-07 | 广州市拓道流体设备技术有限公司 | Cavitation prevention slurry pump |
| CN107559207A (en) * | 2017-08-15 | 2018-01-09 | 王道红 | A kind of Novel slurry pump |
-
2001
- 2001-01-05 CN CN 01213219 patent/CN2470587Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988505A (en) * | 2009-08-04 | 2011-03-23 | 江苏华机环保设备有限责任公司 | Double-door bagasse pump |
| CN103758781A (en) * | 2013-07-31 | 2014-04-30 | 山东博丰利众化工有限公司 | Centrifugal circulating water pump of sulphur acid making device |
| CN105179307A (en) * | 2015-10-13 | 2015-12-23 | 江苏国泉泵业制造有限公司 | Wear-resistance centrifugal slurry pump impeller hydraulic design method |
| CN105927595A (en) * | 2016-06-28 | 2016-09-07 | 广州市拓道流体设备技术有限公司 | Cavitation prevention slurry pump |
| CN107559207A (en) * | 2017-08-15 | 2018-01-09 | 王道红 | A kind of Novel slurry pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |