CN207064319U - It is a kind of to pass through the twisted blade type impeller of the efficient double wall dredge pump of sphere diameter greatly - Google Patents
It is a kind of to pass through the twisted blade type impeller of the efficient double wall dredge pump of sphere diameter greatly Download PDFInfo
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- CN207064319U CN207064319U CN201720578290.7U CN201720578290U CN207064319U CN 207064319 U CN207064319 U CN 207064319U CN 201720578290 U CN201720578290 U CN 201720578290U CN 207064319 U CN207064319 U CN 207064319U
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Abstract
Dredge pump the Hydraulic Design technical field is the utility model is related to, discloses a kind of greatly by the twisted blade type impeller of the efficient double wall dredge pump of sphere diameter, wherein for impeller maximum by sphere diameter is impeller suction inlet diameter 60%, blade is three-dimensional twisted blade.Pump impeller blade of the present utility model of dredging is designed to distortion type blade, vane type line improves the handling capacity of impeller channel, new impeller of pump of dredging can solve the problem that the problem of easily blocking when dredge pump conveys big rock, and reduce hydraulic loss, improve dredging pump efficiency.
Description
Technical field
The utility model is related to it is a kind of be used to dredging, large rock mass can be conveyed in mining industry field, the big of mineral passes through ball
Footpath high-efficiency industrial pump, mainly a kind of handling capacity are the 60% of dredge pump suction inlet diameter, can effectively prevent what ratchel from blocking
Dredge pump.
Background technology
Dredge pump is the key equipment of dredger, when cutter suction dredger is digging decomposed rock, coral hermatolith or contains larger stone
During the sandy soil of block, it may occur that stone gets lodged in the situation of dredging pump impeller import, must not interrupt construction, dredge pump inlet short pipe of dismantling,
The stone of impeller inlet is cleared, dredge pump frequent jams, it is impossible to ensure the continuity of construction, seriously reduce strand suction and dredge
Efficiency of construction of the ship in such a soil property operating mode.With existing 3500m3Exemplified by the dredge pump applied on/h cutter suction dredgers, either
The common dredge pump of five leaf impellers or the efficient dredge pump of three blade impellers, the 35-40% by particle diameter for dredge pump suction inlet diameter, when
The a diameter of 850mm of dredge pump suction inlet, i.e. dredge pump maximum are 340mm by sphere diameter, when block sizes are more than 340mm, it is easy to
It is blocked in mouth piece position.Dredging pump impeller it is relatively small by sphere diameter, be that frequent jams occur when conveying sillar for dredge pump
Main cause.During for Subgrade soils such as large rock masses, dredge pump key flow passage components, which do not require nothing more than its runner, should comply with Dredged marerial
Running orbit, and flow channels are big, reduce dredge pump and block.
Utility model content
The problem of easily blocking when conveying rock for existing excavating pump, the purpose of this utility model is to provide one kind can
By the bigger impeller of pump of object external diameter, using the dredge pump maximum of the Impeller Design by sphere diameter up to dredge pump suction inlet diameter
60%, as a diameter of 850mm of dredge pump suction inlet, i.e. dredge pump maximum is 510mm by sphere diameter, enhances the defeated of big rock
Ability is sent, effectively prevents dredge pump from blocking, while there is higher efficiency under various working, improves the construction effect of dredger
Rate.
The utility model needs the technical scheme to be protected to be：
It is a kind of greatly by the twisted blade type impeller of the efficient double wall dredge pump of sphere diameter, the excessively stream part of the impeller is by impeller protecgulum
Plate, back shroud of impeller, fair water cone, blade, wheel hub 5 surround that (this part-structure is related to building block, position relationship, annexation
All it is already belonging to prior art).And innovative point of the present utility model, it is characterised in that：
Described blade 3 is distortion type blade, and the number of blade is three, and adjacent is in 120 degree of intervals, and blade exit width is leaf
The 60% of suction inlet diameter is taken turns, impeller channel is by the 60% of a diameter of impeller suction inlet diameter of maximum spheroid, and blade is from import to going out
Mouthful uniformly thicken, vane thickness value is 80~120mm, 120 °~150 ° of subtended angle of blade value.Vane type line equation is by two
It is grouped into, blade and front shroud intersection equation and blade and back shroud intersection equation：
The blade and front shroud intersection equation：
The blade and back shroud intersection equation：
Wherein, r1For impeller suction inlet radius, unit mm；θ is angle of the blade in circumferencial direction, and vane inlet is starting
0 °, blade exit is terminalFor subtended angle of blade, rs(θ) and rh(θ) is respectively on front shroud intersection and back shroud intersection
Any point is to the distance of impeller central, unit mm.After blade is by front shroud intersection and back shroud intersection setting-out, to impeller outer edge side
In the thickness range set to thickening.
DescribedFor 135 °.
Based on above technical scheme, a kind of efficient excavating pump of big orifice for conveying rock can be designed, inner chamber is by this practicality
The spiral case of New Structure of Cantilever shrouded centrifugal impellor and single channel spiral case composition, internal impeller and outside is cast using rich chromium cast iron
Make and form.
The excessively stream part of impeller is surrounded by front shroud of impeller, back shroud of impeller, fair water cone, blade, wheel hub 5.Pump shaft and leaf
Wheel wheel hub is connected through a screw thread, and impeller suction inlet has wearing ring, has abrasionproof bushing at suction inlet, there is abrasion-resistant lining plate between impeller and pump cover.
Blade is distortion type blade, and the number of blade is three, and impeller channel passes through the 60% of a diameter of impeller suction inlet diameter of maximum spheroid.
Spiral case is supported and fixed by liner plate, pump cover, and spiral casing flow passage section configuration is round rectangle, and spiral casing flow passage width value takes
Impeller channel width and impeller front and rear cover plate thickness value and the gap width sum of impeller cover and abrasion-proof backing block, impeller front and rear covers
Thickness of slab angle value takes 50-60mm, and the gap width of impeller cover and abrasion-proof backing block takes 3-5mm, and the inside and outside edge of spiral case is helix
Type.
Pump impeller blade of the present utility model of dredging is designed to distortion type blade, and vane type line improves impeller channel
Handling capacity, the utility model impeller of pump of dredging can solve the problem that the problem of easily blocking when dredge pump conveys big rock, and reduce
Hydraulic loss, improves dredging pump efficiency.
Dredge pump of the present utility model has greatly by sphere diameter, high efficiency, passes through sphere diameter dredge pump product more existing than market
Improve 50% by sphere diameter, effectively reduce the blocking probability of dredging large rock mass, and dredge pump clear water efficiency ensures up to 85%
Construction continuity and economical, obvious benefit lifting is brought to enterprise.
Brief description of the drawings
Fig. 1 is impeller axis projection and blade type line chart.
Fig. 2 is impeller water body runner graphics and passes through sphere diameter figure.
Fig. 3 is three-dimensional blades part drawing, 1- front shrouds, 2- fair water cones, 3- blades, 4- back shrouds, 5- wheel hubs.
Fig. 4 is double wall dredge pump three-dimensional installation diagram, 6- spiral cases (inner bag), 7- abrasion-proof backing blocks, the big lids of 8-, 9- front pump covers, 10-
Impeller, 11- impeller suction inlet wearing rings, 12- shells, 13- bearing cartridge modules, 14- pump shafts, 15- bearing cartridge brackets.
Fig. 5 is the dredge pump clean water performance curve using the utility model Impeller Design.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings：
Shown in Fig. 1, impeller channel axis plane projection and vane type line, the number of blade 3, impeller outer diameter D2For 2040mm, impeller
Suction inlet diameter 850mm, impeller impeller channel exit width B2 are impeller suction inlet diameter D160%, i.e. impeller channel outlet is wide
Spend B2For 510mm, subtended angle of blade takes 135 °, and vane type line coordinate such as following table is calculated according to equation (1) and equation (2).Leaf
After piece is by front shroud intersection and back shroud intersection setting-out, thickeies 80mm to impeller outer edge direction and obtain.
| θ(°) | 0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | 110 | 120 | 130 | 135 |
| rs(θ)(mm) | 231 | 277 | 323 | 382 | 433 | 490 | 541 | 600 | 654 | 708 | 755 | 805 | 857 | 912 | 1020 |
| rh(θ)(mm) | 429 | 448 | 474 | 498 | 529 | 556 | 591 | 626 | 669 | 708 | 755 | 805 | 857 | 912 | 1020 |
Shown in Fig. 2, the utility model impeller it is maximum by the way that sphere diameter is impeller suction inlet diameter D1 in Fig. 1 60%,
That is 510mm.
Shown in Fig. 3, the excessively stream part of impeller is by front shroud of impeller 1, fair water cone 2, blade 3 and back shroud of impeller 4, wheel hub 5
Surround, and foregoing five parts are integrated casting.Blade 3 is distortion type blade, and the number of blade is three, and impeller channel passes through most
Big sphere diameter is the 60% of impeller suction inlet diameter.
Shown in Fig. 4, pump shaft 14 is connected through a screw thread with impeller 10, and impeller 10 is connected with impeller suction inlet wearing ring 11 by bolt
Connect, impeller 10 is located in the cavity that spiral case (inner bag) 6 and abrasion-proof backing block 7 form, and spiral case (inner bag) 6 is bolted on outer
On shell 12, cavity between spiral case (inner bag) 6 and shell 12 has balanced the pressure in dredge pump runner full of water under high pressure, impeller 10 with
There is abrasion-proof backing block 7 between front pump cover 9 and shell 12, abrasion-proof backing block 7 is connected by bolt and front pump cover 9 and shell 12, and front pump cover 9 is logical
Cross and be bolted on big lid 8, big lid 8 is bolted on shell 12, and pump shaft 14 is located inside bearing cartridge 13, bearing
Cylinder 13 is fixed on bearing cartridge bracket 15, and bearing cartridge bracket 15 is connected by bolt with shell 7, bearing cartridge bracket 15 and shell
12 are bolted in deck in ship structure.
Spiral case (inner bag) width of flow path value take impeller channel width and impeller front and rear cover plate thickness value and impeller cover with
The gap width sum of abrasion-proof backing block, impeller front and rear cover plate thickness value take 60mm, and the gap width of impeller cover and abrasion-proof backing block takes
4mm, i.e. spiral case (inner bag) width of flow path value takes 578mm.
Shown in Fig. 5, the performance curve of the utility model dredge pump, flow 12000- are obtained by numbered analog simulation
14000m3/ h, hydraulic efficiency are excellent up to 83%-85%, hydraulic performance.Examine through production practices, set according to the utility model
The impeller of meter enhances the conveying capacity of big rock, effectively prevents dredge pump from blocking, and improves the construction continuity of dredger,
And then the efficiency of construction of dredger is improved, there is higher economic benefit.Cutter suction dredger can be greatly reduced in severe soil
Dredge pump under matter blocks probability, reduces maintenance time, ship construction continuity is improved, when increasing effective construction of cutter suction dredger
It is long, the daily output is improved, thus it is cost-effective, increase the benefit.
Illustrating for the utility model patent above, but the utility model is not limited to above-described embodiment, also includes
Other embodiment or variation in the utility model concept.
Claims (3)
1. a kind of greatly by the twisted blade type impeller of the efficient double wall dredge pump of sphere diameter, the excessively stream part of the impeller is by impeller protecgulum
Plate, back shroud of impeller, fair water cone, blade, wheel hub (5) surround, it is characterised in that
Described blade (3) is distortion type blade, and the number of blade is three, and adjacent is in 120 degree of intervals, and blade exit width is impeller
The 60% of suction inlet diameter, impeller channel is by the 60% of a diameter of impeller suction inlet diameter of maximum spheroid, and blade is from import to outlet
Uniformly thicken, vane thickness value is 80~120mm, 120 °~150 ° of subtended angle of blade value.
2. a kind of as claimed in claim 1 pass through greatly the twisted blade type impeller of the efficient double wall dredge pump of sphere diameter, it is characterised in that
Vane type line equation is made up of two parts, blade and front shroud intersection equation and blade and back shroud intersection equation：
Blade and front shroud intersection equation：
Blade and back shroud intersection equation：
Wherein, r1For impeller suction inlet radius, unit mm；θ is angle of the blade in circumferencial direction, and vane inlet is originates 0 °, blade
Export as terminal For subtended angle of blade, rs(θ) and rh(θ) be respectively on front shroud intersection and back shroud intersection any point to leaf
The distance at wheel center, unit mm.
3. it is as claimed in claim 2 a kind of greatly by the twisted blade type impeller of the efficient double wall dredge pump of sphere diameter, it is describedFor
135°。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720578290.7U CN207064319U (en) | 2017-05-23 | 2017-05-23 | It is a kind of to pass through the twisted blade type impeller of the efficient double wall dredge pump of sphere diameter greatly |
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|---|---|---|---|
| CN201720578290.7U CN207064319U (en) | 2017-05-23 | 2017-05-23 | It is a kind of to pass through the twisted blade type impeller of the efficient double wall dredge pump of sphere diameter greatly |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100888A (en) * | 2017-05-23 | 2017-08-29 | 中交疏浚技术装备国家工程研究中心有限公司 | A kind of big twisted blade type impeller by the efficient double wall dredge pump of sphere diameter |
| CN108302062A (en) * | 2018-03-15 | 2018-07-20 | 中交疏浚技术装备国家工程研究中心有限公司 | Dredging pump impeller structure and its design method suitable for different soil properties |
-
2017
- 2017-05-23 CN CN201720578290.7U patent/CN207064319U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100888A (en) * | 2017-05-23 | 2017-08-29 | 中交疏浚技术装备国家工程研究中心有限公司 | A kind of big twisted blade type impeller by the efficient double wall dredge pump of sphere diameter |
| CN108302062A (en) * | 2018-03-15 | 2018-07-20 | 中交疏浚技术装备国家工程研究中心有限公司 | Dredging pump impeller structure and its design method suitable for different soil properties |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200113 Address after: No. 21 Jiangxinsha Road, Pudong New Area, Shanghai, 2003 Co-patentee after: NATIONAL ENGINEERING RESEARCH CENTER OF DREDGING TECHNOLOGY AND EQUIPMENT Patentee after: CCCC Shanghai Dredging Equipment Industry Co., Ltd. Address before: 201314 Shanghai city Pudong New Area Xinchang Town GUCUI Road No. 12 Patentee before: NATIONAL ENGINEERING RESEARCH CENTER OF DREDGING TECHNOLOGY AND EQUIPMENT |
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| TR01 | Transfer of patent right |