CN105750508A - Precoated sand submersible pump impeller vane sand mold and manufacture method thereof - Google Patents
Precoated sand submersible pump impeller vane sand mold and manufacture method thereof Download PDFInfo
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- CN105750508A CN105750508A CN201610253648.9A CN201610253648A CN105750508A CN 105750508 A CN105750508 A CN 105750508A CN 201610253648 A CN201610253648 A CN 201610253648A CN 105750508 A CN105750508 A CN 105750508A
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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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Abstract
The invention relates to a precoated sand submersible pump impeller vane sand mold and a manufacture method thereof, comprising a frame sand mold corresponding to a submersible pump impeller inner cavity and vane sand molds corresponding to passages among impeller vanes; the vane sand molds are embedded on the frame sand mold; gaps corresponding to the impeller vanes are provided between the vane sand molds and/or between the vane sand molds and the frame sand mold; the manufacture method of the sand mold of the invention is reasonable; the sand mold of the invention is reasonable in structure, ingenious in design, solid and durable, low in cost, high in molding speed, free of deformation, high in glossiness and environment-friendly.
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, use always and make impeller blade sand mold the method for manual extraction blade by hand, the defect such as there is labor intensity length high, consuming time in type process processed, production efficiency is low, percent defective is high, causes the waste of unnecessary material and the energy.Precoated sand moulding method is faster than manual moulding method removing from mould, it is unlikely to deform, highly polished, environmentally safe, mainly solve existing labor effect height, production efficiency is low, percent defective is high, process is loaded down with trivial details, the problem that fund input is big, in order to overcome defect and the deficiency of above-mentioned prior art, in other industry product, precoated sand casting adopts in a large number, but when submersible pump impeller blade sand mold makes, particularity due to the distortion of blade multi-angle, make coated sand shooting complete rear blade mould cannot extract out at all, so precoated sand submersible pump impeller blade sand mold makes and captures always；If also adopting impeller blade entirety overlay film sand mold, after blade sand mold is made, blade mould cannot be extracted out at all.
Summary of the invention
The technical problem to be solved is to provide one and designs precoated sand submersible pump impeller blade sand mold and preparation method thereof cleverly.
For solving the problems referred to above, the technical solution used in the present invention is:
The present invention include the skeleton sand mold corresponding with submersible pump impeller inner chamber and and impeller blade between the corresponding blade sand mold of passage, blade sand mold is inlaid on skeleton sand mold, is provided with the gap corresponding with impeller blade between blade sand mold and/or between blade sand mold with skeleton sand mold.
Further, skeleton sand mold includes the first dowel of sped structure, the second dowel of sped structure, the lower round platform being connected respectively and the upper crossbearer being connected with the first dowel and the second dowel upper end respectively with the first dowel and the second dowel lower end；First dowel and the second dowel structure are identical, first dowel, the second dowel and upper crossbearer are formed and cut off and be divided into by skeleton sand mold the identical left side body of shape and right side body, the axial line circumferentially array of left side body and the following round platform of right side body is arranged, blade sand mold is arranged between the first dowel, the second dowel, upper crossbearer and lower round platform, blade sand mold at least 2.
Further, blade sand mold includes the first blade sand mold, the second blade sand mold, third blade sand mold and quaterfoil sand mold；
The first groove and the second groove that described left side body includes being arranged on lower round platform upper surface, it is arranged on first on the left of crossbearer on screens groove and second screens groove and is arranged on the first intrados on lower round platform medial wall and the second intrados；
The lower end of the first blade sand mold is inlaid in the first groove, and on second, the lower end of screens groove is inlaid in the second groove,
The upper end of the first blade sand mold is inlaid on first in screens groove, and on second, the upper end of screens groove is inlaid on second screens groove,
The first negative camber on the right side of first dowel, the first convex surface on the left of the second dowel, face, upper crossbearer lower-left, the first intrados right-hand member and the second intrados between formed first accommodation hollow out,
The lower end of the first negative camber is in smoothing junction with the left end of the first intrados, and the right-hand member of the first intrados and the left end of the second intrados are in smoothing junction, and the right-hand member of the second intrados and the lower end of the first convex surface connect；
Described right side body includes being arranged on the 3rd groove and the 4th groove of lower round platform upper surface, is arranged on the 3rd on the right side of crossbearer on screens groove and the 4th screens groove and is arranged on the 3rd intrados on lower round platform medial wall and the 4th intrados；
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,
On 3rd, the upper end of screens groove is inlaid on the 3rd in screens groove, and the upper end of quaterfoil sand mold is inlaid on the 4th in screens groove,
The second convex surface on the left of first dowel, the 3rd positive camber on the right side of the second dowel, face, upper crossbearer bottom right, formation the second accommodation hollow out between the 3rd intrados and the 4th intrados,
The lower end of the 3rd positive camber is in smoothing junction with the left end of the 3rd intrados, and the right-hand member of the 3rd intrados and the left end of the 4th intrados are smooth connected, and the right-hand member of the 4th intrados and the lower end of the second convex surface connect；
First blade sand mold, the second blade sand mold, third blade sand mold and quaterfoil sand mould structure are identical, first blade sand mold and the second blade sand mold are successively set in the first accommodation hollow out, third blade sand mold and quaterfoil sand mold are successively set in the second accommodation hollow out
Convex platform that lower camber side that the first screens key that first blade sand mold includes being inlaid in the first groove and corresponding the first side convex surface of the first negative camber, the upper screens block being inlaid on first in screens groove and the first intrados the fit side concave curved surface corresponding with the second side convex surface of the second blade sand mold, upper surface are concordant with upper crossbearer lower surface and the first outer arc surface；
Gap corresponding with immersible pump blade it is provided with between the first negative camber and the first side convex surface；It is provided with gap corresponding with immersible pump blade between the second side convex surface and side concave curved surface of the second blade sand mold；The axial line circumferentially array of the following round platform in described gap is arranged；
The sped structure of the first side convex surface, side concave curved surface and the first outer arc surface composition, the first outer arc surface is positioned at the top of the first side convex surface and side concave curved surface,
Upper screens block is arranged on convex platform side, and upper screens block lower end is connected with the first side convex surface, side concave curved surface and the first outer arc surface upper end respectively, and lower camber side is 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 of third blade sand mold, the 3rd outer arc surface of quaterfoil sand mold, the outside curve of the first dowel and the outside curve of the second dowel form the ring seal curved surface corresponding with submersible pump impeller inner chamber.
A kind of method 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 described blade sand mold；
Step c: after execution of step a and step b, splice blade sand mold on skeleton sand mold successively.
Further, described step a: the model of skeleton sand mold includes the upper model of skeleton sand mold and the drag of skeleton sand mold, between the upper model and the drag of skeleton sand mold of skeleton sand mold, it is provided with the die joint of skeleton sand mold；
First carrying out matched moulds work step, the drag of the upper model of skeleton sand mold Yu skeleton sand mold is respectively installed to the upper mould erecting bed of sand filler with on counterdie erecting bed, in control, the mobile cylinder of mould erecting bed drives upper model to be displaced downwardly to two model combinations together；
Then it is heated work step, starts sand filler, heating rod is positioned in bottoming hole, is preheated the upper model of skeleton sand mold and the drag of skeleton sand mold by heating rod simultaneously, heat to 180 ° of C-220 ° of C；
Finally carry out note sand work step, the note sand of sand filler moves cylinder and drives note sand cylinder to move to centrally located load bearing solids pattern type place, the note sand hole of the note sand mouth alignment load bearing solids pattern type on note sand cylinder, note sand cylinder pressurization, feed bin notes sand with note sand mouth to the model mesohigh of skeleton sand mold through conveying pipe, note sand cylinder, after note sand, control note sand moves cylinder and drives note sand cylinder to leave skeleton sand mold, note sand mouth is away from note sand hole, after insulation, upper mould erecting bed moves cylinder and drives upper model to promote, and takes out and repair skeleton sand mold.
Further, described step b: the model of described blade sand mold includes the upper model of blade sand mold and the drag of blade sand mold, between the upper model and the drag of bone blade sand mold of blade sand mold, it is provided with the die joint of blade sand mold；
First carrying out matched moulds work step, the drag of the upper model of blade sand mold Yu blade sand mold is respectively installed to the upper mould erecting bed of sand filler with on counterdie erecting bed, in control, the mobile cylinder of mould erecting bed drives upper model to be displaced downwardly to two model combinations together；
Then it is heated work step, starts sand filler, heating rod is positioned in bottoming hole, is preheated the upper model of blade sand mold and the drag of blade sand mold by heating rod simultaneously, heat to 180 ° of C-220 ° of C；
Finally carry out note sand work step, the note sand of sand filler moves cylinder and drives note sand cylinder to move to centrally located blade sand mold model place, the note sand hole of the note sand mouth alignment blade sand mold model on note sand cylinder, note sand cylinder pressurization, feed bin notes sand with note sand mouth to the model mesohigh of blade sand mold through conveying pipe, note sand cylinder, after note sand, control note sand moves cylinder and drives note sand cylinder to leave skeleton sand mold, note sand mouth is away from note sand hole, after insulation, upper mould erecting bed moves cylinder and drives upper model to promote, and takes out and repair blade sand mold.
Further, in the end carrying out in note sand work step, note sand cylinder is pressurised into 0.7Mpa-0.76Mpa, notes sand duration 5S, is incubated 100S.
Further, the model of blade sand mold and the model of skeleton sand mold are attached with releasing agent.
Further, in the end carry out, in note sand work step, performing to remove rising head.
Adopt and have the beneficial effects that produced by technique scheme:
Before the present invention is applicable to submersible pump impeller casting pouring, precoated sand makes impeller blade sand mold, particularly well submersible pump impeller multi-angle twisted blade precoated sand type.
The present invention adopts the spliced impeller blade sand mold of precoated sand sand mold, impeller blade sand mold is divided into some pieces of (the first blade sand molds, second blade sand mold, third blade sand mold, quaterfoil sand mold, particular number is determined according to actually used design, skeleton sand mold is integrated), by the first blade sand mold, second blade sand mold, third blade sand mold, quaterfoil sand mold is decomposed into some pieces, distinguish open form all in a mold for each piece, penetrate sand machine and automatically complete following technique: on, counterdie Guan Bi inlet is penetrated sand flash baking sand solidified and is moved back in case pressurize, counterdie die sinking is taken out precoated sand blade sand mold sand mold splicing impeller blade sand mold and is completed.Finally each blade sand mold submersible pump impeller blade sand mold that has been stitched together is made, thus (need not be not related to) extract the operation of twisted blade mould, equally possible utilize precoated sand to produce submersible pump impeller blade sand mold.
Present configuration is reasonable, designs ingenious, durable, saves cost, and removing from mould is fast, indeformable, highly polished, environmentally safe.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural representation of the present invention the first blade sand mold.
Fig. 3 is the structural representation of skeleton sand mold of the present invention.
Fig. 4 is the structural representation of round platform under the present invention.
Fig. 5 is the structural representation of the present invention the second groove.
Fig. 6 is the structural representation of the present invention the first convex surface.
Fig. 7 is the structural representation of convex platform of the present invention.
Fig. 8 is the structural representation of lower camber side of the present invention.
Wherein: 1, skeleton sand mold；2, the first blade sand mold；3, the second blade sand mold；4, third blade sand mold；5, quaterfoil sand mold；6, lower round platform；7, the first groove；8, the second groove；9, first holds hollow out；10, second holds hollow out；11, the 3rd groove；12, the 4th groove；13, the first negative camber；14, the 3rd positive camber；15, screens groove on first；16, screens groove on second；17, screens groove on the 3rd；18, screens groove on the 4th；19, the first intrados；20, the second intrados；21, the 3rd intrados；22, the 4th intrados；23, the first dowel；24, the second dowel；25, the first convex surface；26, the second convex surface；27, upper crossbearer；28, the first screens key；29, side concave curved surface；30, the first side convex surface；31, convex platform；32, upper screens block；33, lower camber side；34, the first outer arc surface.
Detailed description of the invention
As shown in figures 1-8, the present invention include the skeleton sand mold 1 corresponding with submersible pump impeller inner chamber and and impeller blade between the corresponding blade sand mold of passage, blade sand mold is inlaid on skeleton sand mold 1, is provided with the gap corresponding with impeller blade between blade sand mold and/or between blade sand mold with skeleton sand mold 1.
Further, skeleton sand mold 1 includes the first dowel 23 of sped structure, the second dowel 24 of sped structure, the lower round platform 6 being connected with the second dowel 24 lower end respectively and the upper crossbearer 27 being connected with the second dowel 24 upper end with the first dowel 23 respectively with the first dowel 23；First dowel 23 is identical with the second dowel 24 structure, first dowel the 23, second dowel 24 and upper crossbearer 27 are formed and cut off and be divided into by skeleton sand mold 1 the identical left side body of shape and right side body, the axial line circumferentially array of left side body and the following round platform 6 of right side body is arranged, blade sand mold is arranged on first dowel the 23, second dowel 24, between upper crossbearer 27 and lower round platform 6, blade sand mold at least 2.
Further, blade sand mold includes first blade sand mold the 2, second blade sand mold 3, third blade sand mold 4 and quaterfoil sand mold 5；
The first groove 7 that left side body includes being arranged on lower round platform 6 upper surface and the second groove 8, the first intrados 19 and the second intrados 20 being arranged on first on the left of crossbearer 27 on screens groove 15 and second screens groove 16 and being arranged on lower round platform 6 medial wall；
The lower end of the first blade sand mold 2 is inlaid in the first groove 7, and on second, the lower end of screens groove 16 is inlaid in the second groove 8,
The upper end of the first blade sand mold 2 is inlaid on first in screens groove 15, and on second, the upper end of screens groove 16 is inlaid on second screens groove 16,
The first convex surface 25 on the left of first negative camber the 13, second dowel 24 on the right side of first dowel 23, face, upper crossbearer 27 lower-left, the first intrados 19 right-hand member and the second intrados 20 between form the first accommodation hollow out 9,
The lower end of the first negative camber 13 is in smoothing junction with the left end of the first intrados 19, and the right-hand member of the first intrados 19 and the left end of the second intrados 20 are in smoothing junction, and the right-hand member of the second intrados 20 and the lower end of the first convex surface 25 connect；
Right side body includes being arranged on the 3rd groove 11 and the 4th groove 12 of lower round platform 6 upper surface, is arranged on the 3rd on the right side of crossbearer 27 on screens groove 17 and the 4th screens groove 18 and is arranged on the 3rd intrados 21 and the 4th intrados 22 on lower round platform 6 medial wall；
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,
On 3rd, the upper end of screens groove 17 is inlaid on the 3rd in screens groove 17, and the upper end of quaterfoil sand mold 5 is inlaid on the 4th in screens groove 18,
The 3rd positive camber 14 on the right side of second convex surface the 26, second dowel 24 on the left of first dowel 23, face, upper crossbearer 27 bottom right, formation the second accommodation hollow out 10 between the 3rd intrados 21 and the 4th intrados 22,
The lower end of the 3rd positive camber 14 is in smoothing junction with the left end of the 3rd intrados 21, and the right-hand member of the 3rd intrados 21 and the left end of the 4th intrados 22 are smooth connected, and the right-hand member of the 4th intrados 22 and the lower end of the second convex surface 26 connect；
First blade sand mold the 2, 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 accommodation hollow out 9, third blade sand mold 4 and quaterfoil sand mold 5 are successively set in the second accommodation hollow out 10
Convex platform 31 that the first screens key 28 that first blade sand mold 2 includes being inlaid in the first groove 7, the first side convex surface 30 corresponding with the first negative camber 13, the upper screens block 32 being inlaid on first in screens groove 15 and the lower camber side 33 that the first intrados 19 the fits side concave curved surface 29 corresponding with the second side convex surface of the second blade sand mold 3, upper surface are concordant with upper crossbearer 27 lower surface and the first outer arc surface 34；
Gap corresponding with immersible pump blade it is provided with between the first negative camber 13 with the first side convex surface 30；It is provided with gap corresponding with immersible pump blade between the second side convex surface and side concave curved surface 29 of the second blade sand mold 3；The axial line circumferentially array of the following round platform 6 in gap is arranged；
The sped structure of the first side convex surface 30, side concave curved surface 29 and the first outer arc surface 34 composition, the first outer arc surface 34 is positioned 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 is connected with the first side convex surface 30, side concave curved surface 29 and the first outer arc surface 34 upper end respectively, lower camber side 33 is connected with the first side convex surface 30, side concave curved surface 29 and the first outer arc surface 34 lower end respectively
Second outer arc surface of first outer arc surface the 34, second blade sand mold 3, the 3rd outer arc surface of third blade sand mold 4, the 3rd outer arc surface of quaterfoil sand mold 5, the outside curve of the first dowel 23 and the outside curve of the second dowel 24 form the ring seal curved surface corresponding with submersible pump impeller inner chamber.
The method 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 on skeleton sand mold 1 successively.
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, between the upper model and the drag of skeleton sand mold 1 of skeleton sand mold 1, it is provided with the die joint of skeleton sand mold 1；
First carrying out matched moulds work step, the drag of the upper model of skeleton sand mold 1 Yu skeleton sand mold 1 is respectively installed to the upper mould erecting bed of sand filler with on counterdie erecting bed, in control, the mobile cylinder of mould erecting bed drives upper model to be displaced downwardly to two model combinations together；
Then it is heated work step, starts sand filler, heating rod is positioned in bottoming hole, is preheated the upper model of skeleton sand mold 1 and the drag of skeleton sand mold 1 by heating rod simultaneously, heat to 180 ° of C-220 ° of C；
Finally carry out note sand work step, the note sand of sand filler moves cylinder and drives note sand cylinder to move to centrally located skeleton sand mold 1 model place, the note sand hole of note sand mouth alignment skeleton sand mold 1 model on note sand cylinder, note sand cylinder pressurization, feed bin notes sand with note sand mouth to the model mesohigh of skeleton sand mold 1 through conveying pipe, note sand cylinder, after note sand, control note sand moves cylinder and drives note sand cylinder to leave skeleton sand mold, note sand mouth is away from note sand hole, after insulation, upper mould erecting bed moves cylinder and drives upper model to promote, and takes 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, between the upper model and the drag of bone blade sand mold of blade sand mold, it is provided with the die joint of blade sand mold；
First carrying out matched moulds work step, the drag of the upper model of blade sand mold Yu blade sand mold is respectively installed to the upper mould erecting bed of sand filler with on counterdie erecting bed, in control, the mobile cylinder of mould erecting bed drives upper model to be displaced downwardly to two model combinations together；
Then it is heated work step, starts sand filler, heating rod is positioned in bottoming hole, is preheated the upper model of blade sand mold and the drag of blade sand mold by heating rod simultaneously, heat to 180 ° of C-220 ° of C；
Finally carry out note sand work step, the note sand of sand filler moves cylinder and drives note sand cylinder to move to centrally located blade sand mold model place, the note sand hole of the note sand mouth alignment blade sand mold model on note sand cylinder, note sand cylinder pressurization, feed bin notes sand with note sand mouth to the model mesohigh of blade sand mold through conveying pipe, note sand cylinder, after note sand, control note sand moves cylinder and drives note sand cylinder to leave skeleton sand mold, note sand mouth is away from note sand hole, after insulation, upper mould erecting bed moves cylinder and drives upper model to promote, and takes out and repair blade sand mold.
Further, in the end carrying out in note sand work step, note sand cylinder is pressurised into 0.7Mpa-0.76Mpa, notes sand duration 5S, is incubated 100S.Improve product quality.
Further, the model of blade sand mold and the model of skeleton sand mold 1 are attached with releasing agent.It is easy to the demoulding.
Further, in the end carry out, in note sand work step, performing to remove rising head.Improve product quality.
The present invention adopts the spliced impeller blade sand mold of precoated sand sand mold, impeller blade sand mold is divided into some pieces of (the first blade sand molds 2, second blade sand mold 3, third blade sand mold 4, quaterfoil sand mold 5, particular number is determined according to actually used design, skeleton sand mold 1 is integrated), by the first blade sand mold 2, second blade sand mold 3, third blade sand mold 4, quaterfoil sand mold 5 is decomposed into some pieces, distinguish open form all in a mold for each piece, penetrate sand machine and automatically complete following technique: on, counterdie Guan Bi inlet is penetrated sand flash baking sand solidified and is moved back in case pressurize, counterdie die sinking is taken out precoated sand blade sand mold sand mold splicing impeller blade sand mold and is completed.Finally each blade sand mold submersible pump impeller blade sand mold that has been stitched together is made, thus (need not be not related to) extract the operation of twisted blade mould, equally possible utilize precoated sand to produce submersible pump impeller blade sand mold.
Present configuration is reasonable, designs ingenious, durable, saves cost, and removing from mould is fast, indeformable, highly polished, environmentally safe.
Last it is noted that above example is only in order to illustrate technical scheme, it is not intended to limit；Although the present invention being described in detail with reference to previous embodiment, it will be understood by those within the art that: the technical scheme described in previous embodiment still can be modified by it, or wherein portion of techniques feature is carried out equivalent replacement；It is combined being apparent to multiple technical schemes of the present invention as those skilled in the art.And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of embodiment of the present invention technical scheme.
Claims (9)
1. a precoated sand submersible pump impeller blade sand mold, it is characterized in that: include the skeleton sand mold (1) corresponding with submersible pump impeller inner chamber and and impeller blade between the corresponding blade sand mold of passage, blade sand mold is inlaid on skeleton sand mold (1), is provided with the gap corresponding with impeller blade between blade sand mold and/or between blade sand mold with skeleton sand mold (1).
2. a kind of precoated sand submersible pump impeller blade sand mold according to claim 1, it is characterised in that: skeleton sand mold (1) includes first dowel (23) of sped structure, second dowel (24) of sped structure, the lower round platform (6) being connected with the second dowel (24) lower end respectively and the upper crossbearer (27) being connected with the second dowel (24) upper end with the first dowel (23) respectively with the first dowel (23)；First dowel (23) is identical with the second dowel (24) structure, first dowel (23), the second dowel (24) and upper crossbearer (27) are formed and cut off and be divided into by skeleton sand mold (1) the identical left side body of shape and right side body, the axial line circumferentially array of left side body and the following round platform of right side body (6) is arranged, blade sand mold is arranged between the first dowel (23), the second dowel (24), upper crossbearer (27) and lower round platform (6), blade sand mold at least 2.
3. a kind of precoated sand submersible pump impeller blade sand mold according to claim 2, it is characterised in that: 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)；
Described left side body includes being arranged on first groove (7) of lower round platform (6) upper surface and the second groove (8), be arranged on the first of crossbearer (27) left side on screens groove (15) and second screens groove (16) and the first intrados (19) being arranged on lower round platform (6) medial wall and the second intrados (20)；
The lower end of the first blade sand mold (2) is inlaid in the first groove (7), and on second, the lower end of screens groove (16) is inlaid in the second groove (8),
The upper end of the first blade sand mold (2) is inlaid on first in screens groove (15), and on second, the upper end of screens groove (16) is inlaid on second screens groove (16),
First dowel (23) right side the first negative camber (13), the second dowel (24) left side the first convex surface (25), upper crossbearer (27) face, lower-left, the first intrados (19) right-hand member and the second intrados (20) between formed first hold hollow out (9)
The lower end of the first negative camber (13) is in smoothing junction with the left end of the first intrados (19), the right-hand member of the first intrados (19) and the left end of the second intrados (20) are in smoothing junction, and the right-hand member of the second intrados (20) and the lower end of the first convex surface (25) connect；
Described right side body includes being arranged on the 3rd groove (11) of lower round platform (6) upper surface and the 4th groove (12), is arranged on the 3rd of crossbearer (27) right side on screens groove (17) and the 4th screens groove (18) and the 3rd intrados (21) being arranged on lower round platform (6) medial wall 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 groove (12),
On 3rd, the upper end of screens groove (17) is inlaid on the 3rd in screens groove (17), and the upper end of quaterfoil sand mold (5) is inlaid on the 4th in screens groove (18),
Second convex surface (26) in the first dowel (23) left side, the 3rd positive camber (14) on the second dowel (24) right side, upper crossbearer (27) face, bottom right, formation the second accommodation hollow out (10) between the 3rd intrados (21) and the 4th intrados (22)
The lower end of the 3rd positive camber (14) is in smoothing junction with the left end of the 3rd intrados (21), the right-hand member of the 3rd intrados (21) and the left end of the 4th intrados (22) are smooth connected, and the right-hand member of the 4th intrados (22) and the lower end of the second convex surface (26) connect；
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 accommodation hollow out (9), third blade sand mold (4) and quaterfoil sand mold (5) are successively set in the second accommodation hollow out (10)
First blade sand mold (2) includes the first screens key (28) being inlaid in the first groove (7), the first side convex surface (30) corresponding with the first negative camber (13), the upper screens block (32) being inlaid on first in screens groove (15), the lower camber side (33) fitted with the first intrados (19), the side concave curved surface (29) corresponding with the second side convex surface of the second blade sand mold (3), convex platform (31) that upper surface is concordant with upper crossbearer (27) lower surface and the first outer arc surface (34)；
It is provided with gap corresponding with immersible pump blade between the first negative camber (13) with the first side convex surface (30)；It is provided with gap corresponding with immersible pump blade between the second side convex surface and side concave curved surface (29) of the second blade sand mold (3)；The axial line circumferentially array in the following round platform in described gap (6) is arranged；
The sped structure that first side convex surface (30), side concave curved surface (29) and the first outer arc surface (34) form, first outer arc surface (34) is positioned 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 is connected with the first side convex surface (30), side concave curved surface (29) and the first outer arc surface (34) upper end respectively, lower camber side (33) is connected with the first side convex surface (30), side concave curved surface (29) and the first outer arc surface (34) lower end respectively
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 3rd outer arc surface of quaterfoil sand mold (5), the outside curve of the first dowel (23) and the outside curve of the second dowel (24) form the ring seal curved surface corresponding with submersible pump impeller inner chamber.
4. the method for the precoated sand submersible pump impeller blade sand mold that a kind makes described in any one of claim 1-3, it is characterised in that: comprise the following steps；
Step a: include the making of skeleton sand mold (1)；
Step b: include the making of described blade sand mold；
Step c: after execution of step a and step b, splice blade sand mold successively on skeleton sand mold (1).
5. a kind of method making precoated sand submersible pump impeller blade sand mold according to claim 4, it is characterized in that: described 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), between the upper model and the drag of skeleton sand mold (1) of skeleton sand mold (1), be provided with the die joint of skeleton sand mold (1)；
First matched moulds work step is carried out, the drag of the upper model of skeleton sand mold (1) Yu skeleton sand mold (1) being respectively installed to the upper mould erecting bed of sand filler with on counterdie erecting bed, in control, the mobile cylinder of mould erecting bed drives upper model to be displaced downwardly to two model combinations together；
Then it is heated work step, starts sand filler, heating rod is positioned in bottoming hole, is preheated the upper model of skeleton sand mold (1) and the drag of skeleton sand mold (1) by heating rod simultaneously, heat to 180 ° of C-220 ° of C；
Finally carry out note sand work step, the note sand of sand filler moves cylinder and drives note sand cylinder to move to centrally located skeleton sand mold (1) model place, the note sand hole of note sand mouth alignment skeleton sand mold (1) model on note sand cylinder, note sand cylinder pressurization, feed bin is through conveying pipe, note sand cylinder notes sand with note sand mouth to the model mesohigh of skeleton sand mold (1), after note sand, control note sand moves cylinder and drives note sand cylinder to leave skeleton sand mold, note sand mouth is away from note sand hole, after insulation, upper mould erecting bed moves cylinder and drives upper model to promote, take out and repair skeleton sand mold (1).
6. a kind of method making precoated sand submersible pump impeller blade sand mold according to claim 4, it is characterized in that: described step b: the model of described blade sand mold includes the upper model of blade sand mold and the drag of blade sand mold, between the upper model and the drag of bone blade sand mold of blade sand mold, be provided with the die joint of blade sand mold；
First carrying out matched moulds work step, the drag of the upper model of blade sand mold Yu blade sand mold is respectively installed to the upper mould erecting bed of sand filler with on counterdie erecting bed, in control, the mobile cylinder of mould erecting bed drives upper model to be displaced downwardly to two model combinations together；
Then it is heated work step, starts sand filler, heating rod is positioned in bottoming hole, is preheated the upper model of blade sand mold and the drag of blade sand mold by heating rod simultaneously, heat to 180 ° of C-220 ° of C；
Finally carry out note sand work step, the note sand of sand filler moves cylinder and drives note sand cylinder to move to centrally located blade sand mold model place, the note sand hole of the note sand mouth alignment blade sand mold model on note sand cylinder, note sand cylinder pressurization, feed bin notes sand with note sand mouth to the model mesohigh of blade sand mold through conveying pipe, note sand cylinder, after note sand, control note sand moves cylinder and drives note sand cylinder to leave blade sand mold, note sand mouth is away from note sand hole, after insulation, upper mould erecting bed moves cylinder and drives upper model to promote, and takes out and repair blade sand mold.
7. a kind of method making precoated sand submersible pump impeller blade sand mold according to claim 5 or 6, it is characterised in that: in the end carrying out in note sand work step, note sand cylinder is pressurised into 0.7Mpa-0.76Mpa, notes sand duration 5S, is incubated 100S.
8. a kind of method making described precoated sand submersible pump impeller blade sand mold according to claim 5 or 6, it is characterised in that: the model of blade sand mold and be attached with releasing agent on the model of skeleton sand mold (1).
9. a kind of method making precoated sand submersible pump impeller blade sand mold according to claim 5 or 6, it is characterised in that: in the end carry out, in note sand work step, performing to remove rising head.
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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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| CN109175262A (en) * | 2018-11-16 | 2019-01-11 | 襄阳五二五泵业有限公司 | A kind of production method of combination type blade wheel sand core |
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| CN105750508B (en) | 2018-02-16 |
| CN108015226B (en) | 2019-03-29 |
| CN108015226A (en) | 2018-05-11 |
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