CN108015226A - The production method of precoated sand submersible pump impeller blade sand mold - Google Patents
The production method of precoated sand submersible pump impeller blade sand mold Download PDFInfo
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- CN108015226A CN108015226A CN201711101598.3A CN201711101598A CN108015226A CN 108015226 A CN108015226 A CN 108015226A CN 201711101598 A CN201711101598 A CN 201711101598A CN 108015226 A CN108015226 A CN 108015226A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
- B22C15/23—Compacting by gas pressure or vacuum
- B22C15/24—Compacting by gas pressure or vacuum involving blowing devices in which the mould material is supplied in the form of loose particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
- B22C9/28—Moulds for peculiarly-shaped castings for wheels, rolls, or rollers
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- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a kind of precoated sand submersible pump impeller blade sand mold and preparation method thereof, it includes skeleton sand mold corresponding with submersible pump impeller inner cavity and the corresponding blade sand mold of passage between impeller blade, blade sand mold is inlaid on skeleton sand mold, is provided between blade sand mold and/or between blade sand mold and skeleton sand mold and the corresponding gap of impeller blade；Its production method, rational technology；The present invention is rational in infrastructure, ingenious in design, durable, cost-effective, and it is fast to go out type, indeformable, highly polished, environmentally safe.
Description
Technical field
The present invention relates to a kind of precoated sand submersible pump impeller blade sand mold and preparation method thereof.
Background technology
Now widely used submersible pump impeller, always using making impeller blade sand mold and manual extraction blade by hand
Method, there are the defects of labor intensity is high, time-consuming, low production efficiency, high rejection rate, unnecessary material is being caused during type processed
The waste of material and the energy.Precoated sand moulding method than manual moulding method go out type is fast, be unlikely to deform, it is highly polished, to environment
It is pollution-free, mainly solve the problems, such as existing labor effect height, low production efficiency, high rejection rate, process is cumbersome, fund input is big, be
The defects of overcoming the above-mentioned prior art and deficiency, the precoated sand casting largely use, but diving under water in other industry products
When pump impeller blade sand mold makes, due to the particularity of blade multi-angle distortion so that coated sand shooting completes rear blade mould root
Originally it can not extract out, not captured always so precoated sand submersible pump impeller blade sand mold makes；It is if also whole using impeller blade
Body overlay film sand mold, after blade sand mold is made, blade mould can not be extracted out at all.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of precoated sand submersible pump impeller blade sand mold ingenious in design
And preparation method thereof.
To solve the above problems, the technical solution used in the present invention is：
The present invention includes skeleton sand mold corresponding with submersible pump impeller inner cavity and passage is corresponding between impeller blade
Blade sand mold, blade sand mold are inlaid on skeleton sand mold, are set between blade sand mold and/or between blade sand mold and skeleton sand mold
It is equipped with and the corresponding gap of impeller blade.
Further, skeleton sand mold includes the first dowel of sped structure, the second dowel of sped structure, difference
The lower round platform that is connected with the first dowel with the second dowel lower end and respectively with the first dowel and the second dowel upper end
The upper crossbearer of connection；First dowel is identical with the second dowel structure, the first dowel, the second dowel and upper crossbearer shape
It is divided into the identical left side body of shape and right side body, the axial line of left side body and the following round platform of right side body into partition and by skeleton sand mold
Circumferentially array is set, and blade sand mold is arranged between the first dowel, the second dowel, upper crossbearer and lower round platform, blade
Sand mold at least two.
Further, blade sand mold includes the first blade sand mold, the second blade sand mold, third blade sand mold and quaterfoil sand
Type；
The left side body include the first groove for being arranged on lower round platform upper surface and the second groove, be arranged on the left of crossbearer the
Screens groove and the first intrados and the second intrados that are arranged on lower round platform madial wall on screens groove and second on one；
The lower end of first blade sand mold is inlaid in the first groove, and the lower end of screens groove is inlaid in the second groove on second,
The upper end of first blade sand mold is inlaid on first in screens groove, and the upper end of screens groove is inlaid in screens on second on second
Groove,
The first convex surface on the left of the first negative camber, the second dowel, upper crossbearer lower-left face on the right side of first dowel, in first
First is formed between the right end of cambered surface and the second intrados and accommodates hollow out,
The lower end of first negative camber and the left end smooth connection of the first intrados, the right end of the first intrados and the second intrados
Left end is in smoothing junction, and the right end of the second intrados is connected with the lower end of the first convex surface；
Include being arranged on the 3rd groove of lower round platform upper surface on the right side body and the 4th groove, be arranged on the right side of crossbearer
Screens groove and the 3rd intrados and the 4th intrados that are arranged on lower round platform madial wall on screens groove and the 4th on 3rd；
The lower end of third blade sand mold is inlaid in the 3rd groove, and the lower end of quaterfoil sand mold is inlaid in the 4th groove,
The upper end of screens groove is inlaid on the 3rd in screens groove on 3rd, and the upper end of quaterfoil sand mold is inlaid in screens on the 4th
In groove,
The 3rd positive camber on the right side of the second convex surface, the second dowel, upper crossbearer bottom right face on the left of first dowel, in the 3rd
Second is formed between cambered surface and the 4th intrados and accommodates hollow out,
The lower end of 3rd positive camber and the left end of the 3rd intrados are in smoothing junction, the right end of the 3rd intrados and the 4th intrados
Left end is smoothly connected, and the right end of the 4th intrados is connected with the lower end of the second convex surface；
First blade sand mold, the second blade sand mold, third blade sand mold are identical with quaterfoil sand mould structure, the first blade sand mold
It is successively set on the second blade sand mold in the first receiving hollow out, third blade sand mold and quaterfoil sand mold are successively set on
Two accommodate in hollow out,
First blade sand mold includes being inlaid in the first screens key in the first groove, convex with corresponding first side of the first negative camber
Curved surface, the upper screens block being inlaid on first in screens groove, the lower camber side to fit with the first intrados and the second blade sand mold
The corresponding side concave curved surface of the second side convex surface, curved outside the upper surface convex platform concordant with upper crossbearer lower face and first
Face；
Gap corresponding with diving pump blade is provided between the first negative camber and the first side convex surface；In the second blade sand mold
The second side convex surface and side concave curved surface between be provided with and the corresponding gap of diving pump blade；The axis of the following round platform in gap
Circumferentially array is set heart line；
The sped structure of first side convex surface, side concave curved surface and the first outer arc surface composition, the first outer arc surface are located at the
The top of side convex surface and side concave curved surface,
Upper screens block is arranged on convex platform side, upper screens block lower end respectively with the first side convex surface, side concave curved surface and first
Outer arc surface upper end connection, lower camber side are connected with the first side convex surface, side concave curved surface and the first outer arc surface lower end respectively,
First outer arc surface, the second outer arc surface of the second blade sand mold, the 3rd outer arc surface, the 4th leaf of third blade sand mold
The outside curve of 3rd outer arc surface of piece sand mold, the outside curve of the first dowel and the second dowel is formed and immersible pump
The corresponding ring seal curved surface in impeller inner cavity.
A kind of method for making above-mentioned precoated sand submersible pump impeller blade sand mold, comprises the following steps；
Step a：Include the making of skeleton sand mold；
Step b：Include the making of the blade sand mold；
Step c：After execution of step a and step b, splice blade sand mold successively on skeleton sand mold.
Further, the step a：The model of skeleton sand mold includes the upper model of skeleton sand mold and the lower die of skeleton sand mold
Type, is provided with the die joint of skeleton sand mold between the drag of upper model and the skeleton sand mold of skeleton sand mold；
Molding work step is carried out first, and the drag of the upper model of skeleton sand mold and skeleton sand mold is respectively installed to the upper of sand filler
Mould erecting bed is with lower die erecting bed, controlling the mobile cylinder of upper mold erecting bed to drive upper model to be displaced downwardly to two model combinations one
Rise；
Then heating work step is carried out, starts sand filler, heating rod is positioned in bottoming hole, skeleton is preheated by heating rod at the same time
The upper model of sand mold and the drag of skeleton sand mold, are heated up to 180 DEG C -220 DEG C；
Note sand work step is finally carried out, the note sand mobile cylinder of sand filler drives note sand cylinder to be moved into place in middle skeleton sand mould
At type, the note sand hole of the note sand mouth alignment skeleton sand mould type on sand cylinder is noted, the cylinder pressurization of note sand, feed bin is by delivery pipe, note sand
Cylinder notes sand with note sand mouth to the model mesohigh of skeleton sand mold, after noting sand, control note sand mobile cylinder drive note sand cylinder from
Open seam frame sand mold, and note sand mouth is away from note sand hole, and after insulation, upper mold erecting bed mobile cylinder drives upper model lifting, takes out
And repair skeleton sand mold.
Further, the step b：The model of the blade sand mold is included under the upper model and blade sand mold of blade sand mold
Model, is provided with the die joint of blade sand mold between the drag of upper model and bone the blade sand mold of blade sand mold；
Molding work step is carried out first, and the drag of the upper model of blade sand mold and blade sand mold is respectively installed to the upper of sand filler
Mould erecting bed is with lower die erecting bed, controlling the mobile cylinder of upper mold erecting bed to drive upper model to be displaced downwardly to two model combinations one
Rise；
Then heating work step is carried out, starts sand filler, heating rod is positioned in bottoming hole, blade is preheated by heating rod at the same time
The upper model of sand mold and the drag of blade sand mold, are heated up to 180 DEG C -220 DEG C；
Note sand work step is finally carried out, the note sand mobile cylinder of sand filler drives note sand cylinder to be moved into place in middle blade sand mould
At type, the note sand hole of the note sand mouth alignment blade sand mold model on sand cylinder is noted, the cylinder pressurization of note sand, feed bin is by delivery pipe, note sand
Cylinder notes sand with note sand mouth to the model mesohigh of blade sand mold, after noting sand, control note sand mobile cylinder drive note sand cylinder from
Open seam frame sand mold, and note sand mouth is away from note sand hole, and after insulation, upper mold erecting bed mobile cylinder drives upper model lifting, takes out
And repair blade sand mold.
Further, in note sand work step is finally carried out, note sand cylinder is pressurised into 0.7Mpa-0.76Mpa, notes sand duration 5s, protects
Warm 100s.
Further, it is attached with releasing agent on the model of the model of blade sand mold and skeleton sand mold.
It is using beneficial effect caused by above-mentioned technical proposal：
Precoated sand makes impeller blade sand mold, particularly well immersible pump leaf before the present invention is suitable for submersible pump impeller casting pouring
Take turns multi-angle twisted blade precoated sand type.
The present invention uses the spliced impeller blade sand mold of precoated sand sand mold, and impeller blade sand mold is divided into some pieces（First
Blade sand mold, the second blade sand mold, third blade sand mold, quaterfoil sand mold, particular number is definite according to actual use design,
Skeleton sand mold is integrated）If the first blade sand mold, the second blade sand mold, third blade sand mold, quaterfoil sand mold are decomposed into
Dry block, each piece is all distinguished open form in a mold, and penetrating sand machine automatically completes following technique：Upper and lower mould closure-inlet is penetrated
Sand-flash baking sand solidified-moves back case pressurize-upper and lower mould and mold-takes out precoated sand blade sand mold-sand mold splicing-leaf
Impeller blade sand mold completes.Finally each blade sand mold is stitched together and completes the making of submersible pump impeller blade sand mold, so
Just do not have to（It is not related to）The process for extracting twisted blade mould, can equally produce submersible pump impeller blade sand using precoated sand
Type.
The present invention is rational in infrastructure, ingenious in design, durable, cost-effective, and it is fast to go out type, indeformable, highly polished, to ring
Border is pollution-free.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention.
Fig. 2 is the structure diagram of the first blade sand mold of the invention.
Fig. 3 is the structure diagram of skeleton sand mold of the present invention.
Fig. 4 is the structure diagram of round platform under the present invention.
Fig. 5 is the structure diagram of the second groove of the invention.
Fig. 6 is the structure diagram of the first convex surface of the invention.
Fig. 7 is the structure diagram of convex platform of the present invention.
Fig. 8 is the structure diagram of lower camber side of the present invention.
Wherein：1st, skeleton sand mold；2nd, the first blade sand mold；3rd, the second blade sand mold；4th, third blade sand mold；5th, the 4th leaf
Piece sand mold；6th, lower round platform；7th, the first groove；8th, the second groove；9th, first hollow out is accommodated；10th, second hollow out is accommodated；11st, the 3rd
Groove；12nd, the 4th groove；13rd, the first negative camber；14th, the 3rd positive camber；15th, screens groove on first；16th, screens groove on second；
17th, screens groove on the 3rd；18th, screens groove on the 4th；19th, the first intrados；20th, the second intrados；21st, the 3rd intrados；22、
4th intrados；23rd, the first dowel；24th, the second dowel；25th, the first convex surface；26th, the second convex surface；27th, upper crossbearer；
28th, the first screens key；29th, side concave curved surface；30th, the first side convex surface；31st, convex platform；32nd, upper screens block；33rd, lower camber side；34、
First outer arc surface.
Embodiment
As shown in figures 1-8, the present invention includes skeleton sand mold 1 corresponding with submersible pump impeller inner cavity and and impeller blade
Between the corresponding blade sand mold of passage, blade sand mold is inlaid on skeleton sand mold 1, between blade sand mold and/or blade sand
It is provided between type and skeleton sand mold 1 and the corresponding gap of impeller blade.
Further, skeleton sand mold 1 includes the first dowel 23, the second dowel of sped structure of sped structure
24th, the lower round platform 6 that is connected respectively with the first dowel 23 with 24 lower end of the second dowel and respectively with the first dowel 23 with
The upper crossbearer 27 of second dowel, 24 upper end connection；First dowel 23 is identical with 24 structure of the second dowel, the first dowel
23rd, the second dowel 24 and upper crossbearer 27, which are formed, separates and skeleton sand mold 1 is divided into the identical left side body and right side body of shape,
Circumferentially array is set the axial line of left side body and the following round platform 6 of right side body, and blade sand mold is arranged on the first dowel 23, second
Between dowel 24, upper crossbearer 27 and lower round platform 6, blade sand mold at least two.
Further, blade sand mold includes the first blade sand mold 2, the second blade sand mold 3,4 and the 4th leaf of third blade sand mold
Piece sand mold 5；
Left side body includes the first groove 7 for being arranged on lower 6 upper surface of round platform and the second groove 8, is arranged on the left side of crossbearer 27
On first on screens groove 15 and second in screens groove 16 and the first intrados 19 and second being arranged on lower 6 madial wall of round platform
Cambered surface 20；
The lower end of first blade sand mold 2 is inlaid in the first groove 7, and the lower end of screens groove 16 is inlaid in the second groove 8 on second
It is interior,
The upper end of first blade sand mold 2 is inlaid on first in screens groove 15, and the upper end of screens groove 16 is inlaid in second on second
Upper screens groove 16,
First negative camber 13 on the right side of the first dowel 23, first convex surface 25 in the left side of the second dowel 24, upper crossbearer 27 are left
Below, first is formed between the right end of the first intrados 19 and the second intrados 20 and accommodates hollow out 9,
The lower end of first negative camber 13 and the left end of the first intrados 19 are in smoothing junction, in the right end and second of the first intrados 19
The left end of cambered surface 20 is in smoothing junction, and the right end of the second intrados 20 is connected with the lower end of the first convex surface 25；
Include being arranged on the 3rd groove 11 of lower 6 upper surface of round platform and the 4th groove 12 on the body of right side, be arranged on the right side of crossbearer 27
Screens groove 18 and the 3rd intrados 21 being arranged on lower 6 madial wall of round platform and on screens groove 17 and the 4th on the 3rd of side
Four intrados 22；
The lower end of third blade sand mold 4 is inlaid in the 3rd groove 11, and the lower end of quaterfoil sand mold 5 is inlaid in the 4th groove 12
It is interior,
The upper end of screens groove 17 is inlaid on the 3rd in screens groove 17 on 3rd, and the upper end of quaterfoil sand mold 5 is inlaid in the 4th
In upper screens groove 18,
Second convex surface 26 in the left side of the first dowel 23, the 3rd positive camber 14 on the right side of the second dowel 24, upper crossbearer 27 are right
Below, second is formed between the 3rd intrados 21 and the 4th intrados 22 and accommodates hollow out 10,
The lower end of 3rd positive camber 14 is in smoothing junction with the left end of the 3rd intrados 21, in the right end and the 4th of the 3rd intrados 21
The left end of cambered surface 22 is smoothly connected, and the right end of the 4th intrados 22 is connected with the lower end of the second convex surface 26；
First blade sand mold 2, the second blade sand mold 3, third blade sand mold 4 are identical with 5 structure of quaterfoil sand mold, the first blade
2 and second blade sand mold 3 of sand mold is successively set in the first receiving hollow out 9, third blade sand mold 4 and quaterfoil sand mold 5 according to
It is secondary to be arranged in the second receiving hollow out 10,
First blade sand mold 2 include being inlaid in the first screens key 28 in the first groove 7, with the first negative camber 13 corresponding the
Side convex surface 30, the upper screens block 32 being inlaid on first in screens groove 15, the lower camber side to fit with the first intrados 19
33rd, the corresponding side concave curved surface 29 of the second side convex surface with the second blade sand mold 3, upper surface are concordant with upper 27 lower face of crossbearer
31 and first outer arc surface 34 of convex platform；
Gap corresponding with diving pump blade is provided between the first negative camber 13 and the first side convex surface 30；In the second blade
Gap corresponding with diving pump blade is provided between the second side convex surface and side concave curved surface 29 of sand mold 3；The following round platform 6 in gap
Axial line circumferentially array set；
The sped structure of first side convex surface 30,29 and first outer arc surface 34 of side concave curved surface composition, the first outer arc surface
34 are located at the top of the first side convex surface 30 and side concave curved surface 29,
Upper screens block 32 is arranged on 31 side of convex platform, upper 32 lower end of screens block respectively with the first side convex surface 30, side concave curved surface
29 and first outer 34 upper end of the arc surface connection, lower camber side 33 respectively with the first side convex surface 30, side concave curved surface 29 and first
Outer 34 lower end of arc surface connection,
First outer arc surface 34, the second outer arc surface of the second blade sand mold 3, the 3rd outer arc surface of third blade sand mold 4,
The outside curve shape of 3rd outer arc surface of quaterfoil sand mold 5, the outside curve of the first dowel 23 and the second dowel 24
Into with the corresponding ring seal curved surface in submersible pump impeller inner cavity.
The method for making above-mentioned precoated sand submersible pump impeller blade sand mold, comprises the following steps；
Step a：Include the making of skeleton sand mold 1；
Step b：Include the making of blade sand mold；
Step c：After execution of step a and step b, splice blade sand mold successively on skeleton sand mold 1.
Further, step a：The model of skeleton sand mold 1 includes the upper model of skeleton sand mold 1 and the drag of skeleton sand mold 1,
The die joint of skeleton sand mold 1 is provided between the drag of upper model and the skeleton sand mold 1 of skeleton sand mold 1；
Molding work step is carried out first, and the drag of the upper model of skeleton sand mold 1 and skeleton sand mold 1 is respectively installed to sand filler
Upper mold erecting bed exists with lower die erecting bed, controlling the mobile cylinder of upper mold erecting bed to drive upper model to be displaced downwardly to two model combinations
Together；
Then heating work step is carried out, starts sand filler, heating rod is positioned in bottoming hole, skeleton is preheated by heating rod at the same time
The upper model of sand mold 1 and the drag of skeleton sand mold 1, are heated up to 180 DEG C -220 DEG C；
Note sand work step is finally carried out, the note sand mobile cylinder of sand filler drives note sand cylinder to be moved into place in middle skeleton sand mold 1
At model, the note sand hole of 1 model of note sand mouth alignment skeleton sand mold on sand cylinder is noted, the cylinder pressurization of note sand, feed bin is by delivery pipe, note
Sand cylinder notes sand with note sand mouth to the model mesohigh of skeleton sand mold 1, and after noting sand, control note sand mobile cylinder drives note sand cylinder
Skeleton sand mold is left, note sand mouth is away from note sand hole, and after insulation, upper mold erecting bed mobile cylinder drives upper model lifting, takes
Go out and repair skeleton sand mold 1.
Further, step b：The model of blade sand mold includes the upper model of blade sand mold and the drag of blade sand mold,
The die joint of blade sand mold is provided between the drag of upper model and bone the blade sand mold of blade sand mold；
Molding work step is carried out first, and the drag of the upper model of blade sand mold and blade sand mold is respectively installed to the upper of sand filler
Mould erecting bed is with lower die erecting bed, controlling the mobile cylinder of upper mold erecting bed to drive upper model to be displaced downwardly to two model combinations one
Rise；
Then heating work step is carried out, starts sand filler, heating rod is positioned in bottoming hole, blade is preheated by heating rod at the same time
The upper model of sand mold and the drag of blade sand mold, are heated up to 180 DEG C -220 DEG C；
Note sand work step is finally carried out, the note sand mobile cylinder of sand filler drives note sand cylinder to be moved into place in middle blade sand mould
At type, the note sand hole of the note sand mouth alignment blade sand mold model on sand cylinder is noted, the cylinder pressurization of note sand, feed bin is by delivery pipe, note sand
Cylinder notes sand with note sand mouth to the model mesohigh of blade sand mold, after noting sand, control note sand mobile cylinder drive note sand cylinder from
Open seam frame sand mold, and note sand mouth is away from note sand hole, and after insulation, upper mold erecting bed mobile cylinder drives upper model lifting, takes out
And repair blade sand mold.
Further, in note sand work step is finally carried out, note sand cylinder is pressurised into 0.7Mpa-0.76Mpa, notes sand duration 5s, protects
Warm 100s.Improve product quality.
Further, it is attached with releasing agent on the model of the model of blade sand mold and skeleton sand mold 1.Easy to demould.
The present invention uses the spliced impeller blade sand mold of precoated sand sand mold, and impeller blade sand mold is divided into some pieces（First
Blade sand mold 2, the second blade sand mold 3, third blade sand mold 4, quaterfoil sand mold 5, particular number are designed according to actual use
Determine, skeleton sand mold 1 is integrated）, by the first blade sand mold 2, the second blade sand mold 3, third blade sand mold 4, quaterfoil sand
Type 5 is decomposed into some pieces, and each piece is all distinguished open form in a mold, and penetrating sand machine automatically completes following technique：Upper and lower mould closes
Conjunction-inlet, which penetrates sand-flash baking sand solidified-and moves back case pressurize-upper and lower mould, mold-takes out precoated sand blade sand mold-sand
Type splicing-impeller blade sand mold completes.Finally each blade sand mold is stitched together and completes submersible pump impeller blade sand mold
Make, do not have to thus（It is not related to）The process for extracting twisted blade mould, equally can produce immersible pump leaf using precoated sand
Impeller blade sand mold.
The present invention is rational in infrastructure, ingenious in design, durable, cost-effective, and it is fast to go out type, indeformable, highly polished, to ring
Border is pollution-free.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
To modify to the technical solution described in previous embodiment, or equivalent substitution is carried out to which part technical characteristic；Make
It is obvious that multiple technical solutions of the present invention, which are combined, for those skilled in the art.And these are changed or replace
Change, the essence of appropriate technical solution is departed from the spirit and scope of technical solution of the embodiment of the present invention.
Claims (2)
- A kind of 1. production method of precoated sand submersible pump impeller blade sand mold, it is characterised in that：Its production method comprises the following steps；Step a：Include the making of skeleton sand mold (1)；Step b：Include the making of the blade sand mold；Step c：After execution of step a and step b, splice blade sand mold successively on skeleton sand mold (1)；In the step a：The model of skeleton sand mold (1) includes the upper model of skeleton sand mold (1) and the lower die of skeleton sand mold (1) Type, is provided with the die joint of skeleton sand mold (1) between the drag of upper model and the skeleton sand mold (1) of skeleton sand mold (1)；Molding work step is carried out first, and the drag of the upper model of skeleton sand mold (1) and skeleton sand mold (1) is respectively installed to note sand The upper mold erecting bed of machine is with lower die erecting bed, controlling the mobile cylinder of upper mold erecting bed to drive upper model to be displaced downwardly to the conjunction of two models And together；Then heating work step is carried out, starts sand filler, heating rod is positioned in bottoming hole, skeleton is preheated by heating rod at the same time The upper model of sand mold (1) and the drag of skeleton sand mold (1), are heated up to 180 DEG C -220 DEG C；Note sand work step is finally carried out, the note sand mobile cylinder of sand filler drives note sand cylinder to be moved into place in middle skeleton sand mold (1) at model, the note sand hole of note sand mouth alignment skeleton sand mold (1) model on sand cylinder is noted, the cylinder pressurization of note sand, feed bin is by conveying Pipe, note sand cylinder note sand with noting sand mouth to the model mesohigh of skeleton sand mold (1), after noting sand, control note sand mobile cylinder band Dynamic note sand cylinder leaves skeleton sand mold, and note sand mouth is away from note sand hole, and after insulation, upper mold erecting bed mobile cylinder drives upper model Lifting, takes out and repairs skeleton sand mold (1)；In the step b：The model of the blade sand mold includes the upper model of blade sand mold and the drag of blade sand mold, The die joint of blade sand mold is provided between the drag of upper model and bone the blade sand mold of blade sand mold；Molding work step is carried out first, and the drag of the upper model of blade sand mold and blade sand mold is respectively installed to the upper of sand filler Mould erecting bed is with lower die erecting bed, controlling the mobile cylinder of upper mold erecting bed to drive upper model to be displaced downwardly to two model combinations one Rise；Then heating work step is carried out, starts sand filler, heating rod is positioned in bottoming hole, blade is preheated by heating rod at the same time The upper model of sand mold and the drag of blade sand mold, are heated up to 180 DEG C -220 DEG C；Note sand work step is finally carried out, the note sand mobile cylinder of sand filler drives note sand cylinder to be moved into place in middle blade sand mould At type, the note sand hole of the note sand mouth alignment blade sand mold model on sand cylinder is noted, the cylinder pressurization of note sand, feed bin is by delivery pipe, note sand Cylinder notes sand with note sand mouth to the model mesohigh of blade sand mold, after noting sand, control note sand mobile cylinder drive note sand cylinder from Blade sand mold is opened, note sand mouth is away from note sand hole, and after insulation, upper mold erecting bed mobile cylinder drives upper model lifting, takes out And repair blade sand mold；In note sand work step is finally carried out, note sand cylinder is pressurised into 0.7Mpa-0.76Mpa, notes sand duration 5s, insulation 100.
- 2. production method according to claim 1, it is characterised in that the precoated sand immersible pump leaf is made after step c Impeller blade sand mold includes skeleton sand mold (1) corresponding with submersible pump impeller inner cavity and passage is corresponding between impeller blade Blade sand mold, blade sand mold is inlaid on skeleton sand mold (1), between blade sand mold and/or blade sand mold and skeleton sand mold (1) it is provided between and the corresponding gap of impeller blade；Skeleton sand mold (1) includes the first dowel (23) of sped structure, the second dowel (24) of sped structure, difference The lower round platform (6) that is connected with the first dowel (23) with the second dowel (24) lower end and respectively with the first dowel (23) with The upper crossbearer (27) of second dowel (24) upper end connection；First dowel (23) is identical with the second dowel (24) structure, the One dowel (23), the second dowel (24) and upper crossbearer (27), which are formed, to be separated and that skeleton sand mold (1) is divided into shape is identical Left side body and right side body, circumferentially array is set the axial line of left side body and the following round platform of right side body (6), and blade sand mold is set Between the first dowel (23), the second dowel (24), upper crossbearer (27) and lower round platform (6), blade sand mold at least two；Blade sand mold includes the first blade sand mold (2), the second blade sand mold (3), third blade sand mold (4) and quaterfoil sand mold (5)；The left side body includes the first groove (7) for being arranged on lower round platform (6) upper surface and the second groove (8), is arranged on horizontal stroke On the left of frame (27) first on screens groove (15) and second screens groove (16) and be arranged on lower round platform (6) madial wall One intrados (19) and the second intrados (20)；The lower end of first blade sand mold (2) is inlaid in the first groove (7), and the lower end of screens groove (16) is inlaid in second on second In groove (8),The upper end of first blade sand mold (2) is inlaid on first in screens groove (15), and the upper end of screens groove (16) is embedded on second Screens groove (16) on second,The first convex surface (25) on the left of the first negative camber (13), the second dowel (24) on the right side of first dowel (23), on Crossbearer (27) lower-left face, the first intrados (19) right end and the second intrados (20) between formed first accommodate hollow out (9),The lower end of first negative camber (13) and the left end of the first intrados (19) are in smoothing junction, the right end of the first intrados (19) with The left end of second intrados (20) is in smoothing junction, and the right end of the second intrados (20) is connected with the lower end of the first convex surface (25)；Include being arranged on the 3rd groove (11) of lower round platform (6) upper surface and the 4th groove (12) on the right side body, be arranged on On the right side of upper crossbearer (27) the 3rd on screens groove (18) and be arranged on lower round platform (6) madial wall on screens groove (17) and the 4th The 3rd intrados (21) and the 4th intrados (22)；The lower end of third blade sand mold (4) is inlaid in the 3rd groove (11), and the lower end of quaterfoil sand mold (5) is inlaid in the 4th In groove (12),The upper end of screens groove (17) is inlaid on the 3rd in screens groove (17) on 3rd, and the upper end of quaterfoil sand mold (5) is embedded in On the 4th in screens groove (18),The 3rd positive camber (14) on the right side of the second convex surface (26), the second dowel (24) on the left of first dowel (23), on Second is formed between crossbearer (27) bottom right face, the 3rd intrados (21) and the 4th intrados (22) and accommodates hollow out (10),The lower end of 3rd positive camber (14) and the left end of the 3rd intrados (21) are in smoothing junction, the right end of the 3rd intrados (21) with The left end of 4th intrados (22) is smoothly connected, and the right end of the 4th intrados (22) is connected with the lower end of the second convex surface (26)；First blade sand mold (2), the second blade sand mold (3), third blade sand mold (4) are identical with quaterfoil sand mold (5) structure, First blade sand mold (2) and the second blade sand mold (3) are successively set in the first receiving hollow out (9), third blade sand mold (4) with Quaterfoil sand mold (5) is successively set in the second receiving hollow out (10),First blade sand mold (2) include being inlaid in the first screens key (28) in the first groove (7), with the first negative camber (13) phase Corresponding first side convex surface (30), the upper screens block (32) being inlaid on first in screens groove (15) and the first intrados (19) lower camber side (33) that fits, with the corresponding side concave curved surface (29) of the second side convex surface of the second blade sand mold (3), on The surface convex platform (31) concordant with upper crossbearer (27) lower face and the first outer arc surface (34)；Gap corresponding with diving pump blade is provided between the first negative camber (13) and the first side convex surface (30)；Second Gap corresponding with diving pump blade is provided between second side convex surface of blade sand mold (3) and side concave curved surface (29)；It is described Circumferentially array is set the axial line of the following round platform in gap (6)；The sped structure of first side convex surface (30), side concave curved surface (29) and the first outer arc surface (34) composition, outside first Arc surface (34) is located at the top of the first side convex surface (30) and side concave curved surface (29),Upper screens block (32) is arranged on convex platform (31) side, upper screens block (32) lower end respectively with the first side convex surface (30), Side concave curved surface (29) and the connection of the first outer arc surface (34) upper end, lower camber side (33) respectively with the first side convex surface (30), side Concave curved surface (29) and the first outer arc surface (34) lower end connection,First outer arc surface (34), the second outer arc surface of the second blade sand mold (3), the 3rd outer arc of third blade sand mold (4) Curved surface, the 3rd outer arc surface of quaterfoil sand mold (5), the outside curve and the second dowel (24) of the first dowel (23) Outside curve to be formed and the corresponding ring seal curved surface in submersible pump impeller inner cavity.
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| CN201610253648.9A CN105750508B (en) | 2016-04-22 | 2016-04-22 | A kind of precoated sand submersible pump impeller blade sand mold and preparation method thereof |
| CN201711101598.3A CN108015226B (en) | 2016-04-22 | 2016-04-22 | The production method of precoated sand submersible pump impeller blade sand mold |
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| CN110586874A (en) * | 2019-10-28 | 2019-12-20 | 襄阳五二五泵业有限公司 | Manufacturing method of integral impeller sand core |
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| CN105750508B (en) | 2018-02-16 |
| CN108015226B (en) | 2019-03-29 |
| CN105750508A (en) | 2016-07-13 |
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