Axial flow pump water outlet casting mold

Abstract

The utility model discloses an axial flow pump water outlet casting mold which comprises a casting module, a pouring gate is arranged on the casting module, the casting module is composed of two half molds, a mold core set which transversely penetrates through the casting module is inserted in the casting module, the mold core set is composed of a mold core a, a mold core b and a core column, and the core column is fixedly installed at the inner end of the mold core b. A plurality of axial convex teeth are evenly arranged at the inner ends of the mold core a and the mold core b along the circumference, the convex teeth between the mold core a and the mold core b are staggered and meshed to form a blade forming cavity, an annular outer cylinder casting cavity is formed between the outer side of the mold core set and the casting module, and an inner cylinder casting cavity is formed between the outer side of the core column and the mold core a. The inner cylinder casting cavity is communicated with the outer cylinder casting cavity through the blade forming cavity, and the lower end of the sprue is communicated with the outer cylinder casting cavity. The barrel body of the water outlet and the guide vanes in the water outlet can be formed through one-time pouring, the process is simplified, the production efficiency is improved, and the water outlet formed through integral casting can obtain high strength.

Description

TECHNICAL FIELD

[0001] The utility model relates to casting mould technical field, concretely is a kind of axial flow pump water outlet casting mould. BACKGROUND

[0002] Axial flow pump is a kind of common pump product, axial flow pump is transported along the axis direction by the force that the blade of rotating impeller produces to liquid, and there are vertical, inclined and tubular type several, and it has wide application in farmland irrigation, municipal water supply and drainage, water transfer project, power plant circulating water project etc., axial flow pump has the advantages of large water delivery, fast water delivery speed, less energy consumption etc..In order to reduce weight and anticorrosion, the shell and water outlet of axial flow pump are mostly aluminum alloy pipe material, since water is output along the axial direction of impeller, so the water flow exists the rotation in the same direction with impeller, so multiple blades consistent with the direction of rotation are set in water outlet to play the role of flow guide, currently the inner wall of pipe body of blade and water outlet is generally welded, which leads to low production efficiency. SUMMARY

[0003] The utility model aims at providing a kind of axial flow pump water outlet casting mould to solve the problems presented in the above background.

[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of axial flow pump water outlet casting mould, including casting die group, the casting die group is equipped with sprue, casting die group is made of two half moulds, the transversely penetrating die core group is inserted in the casting die group, the die core group is made of die core a, die core b and core column, the core column is fixedly installed in the inner end of die core b, the inner end of die core a, die core b is evenly equipped with multiple axial protrusions and the protrusions between the two are staggered and engaged to form blade forming cavity, annular outer cylinder casting cavity is formed between the outer side of die core group and casting die group, inner cylinder casting cavity is formed between the outer side of core column and die core a, the inner cylinder casting cavity and outer cylinder casting cavity are communicated by blade forming cavity, the lower end of sprue is communicated with outer cylinder casting cavity.

[0005] Preferably, the outer end of the core column is conical, and the inner cylinder casting cavity is concentric with the outer cylinder casting cavity.

[0006] Preferably, a box-shaped casting bucket is installed on the upper side of the casting die group beside the sprue, and a turnover for installation is provided on the lower end of the casting bucket.

[0007] Compared with the prior art, the utility model has the beneficial effects that: the utility model can form the cylinder body of water outlet and the flow guide blade inside by one pouring, simplifies the process, improves the generation efficiency, and the water outlet integrally casted can obtain higher strength. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0009] Figure 2 It is a sectional structure schematic view of the utility model;

[0010] Figure 3 It is a three-dimensional structure schematic view of the mold core group;

[0011] Figure 4 It is a sectional structure schematic view of the mold core group.

[0012] In the drawing: 1, half mold; 2, pouring ladle; 3, turnover; 4, pouring gate; 5, mold core a; 6, mold core b; 7, core column; 8, outer cylinder pouring cavity; 9, inner cylinder pouring cavity; 10, blade forming cavity; 11, protruding tooth. DETAILED DESCRIPTION

[0013] The technical scheme in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0014] Please refer to Figures 1-4 The utility model provides a kind of technical scheme: a shaft flow pump water outlet casting mold, including pouring mold group, pouring gate 4 is equipped on pouring mold group, the upper side of pouring mold group is installed with box-like pouring ladle 2 in pouring gate 4 side, the lower end outside of pouring ladle 2 is equipped with turnover 3 for installation, pouring ladle 2 is used to guide flow to pouring gate 4 when pouring, avoid leakage.

[0015] Pouring mold group is made of two half molds 1, pouring mold group is inserted with transversely penetrating mold core group, mold core group is made of mold core a 5, mold core b 6 and core column 7, core column 7 is fixedly installed in the inner end of mold core b 6, the outer end of core column 7 is conical (so that the inner cylinder formed by casting has taper tip, to reduce the resistance to water flow), inner cylinder pouring cavity 9 is concentric with outer cylinder pouring cavity 8, the inner end of mold core a 5 and mold core b 6 is evenly equipped with multiple axial protruding teeth 11 along circumference and the protruding teeth 11 between them are staggered and engaged to form blade forming cavity 10, annular outer cylinder pouring cavity 8 is formed between the outer side of mold core group and pouring mold group.

[0016] The outer side of core column 7 and mold core a 5 form inner cylinder pouring cavity 9, inner cylinder pouring cavity 9 and outer cylinder pouring cavity 8 are communicated by blade forming cavity 10, the lower end of pouring gate 4 is communicated with outer cylinder pouring cavity 8. When parting, two half molds 1 are separated, mold core a 5 and mold core b 6 are separated along axial direction, so that the integrally formed water outlet casting can be conveniently taken out, and once casting is formed, which is conducive to improving the generation efficiency.

[0017] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A casting mould for the outlet of an axial flow pump, comprising a gating system provided with a sprue (4), the gating system being composed of two half-moulds (1), characterised in that: The casting mold group is plugged with a transversely penetrating mold core group, which is composed of a mold core a (5), a mold core b (6) and a core column (7), the core column (7) is fixedly installed at the inner end of the mold core b (6), the mold core a (5) and the mold core b (6) are uniformly provided with a plurality of axial protrusions (11) at the inner end along the circumference, the protrusions (11) between the two are staggered and engaged to form a vane forming cavity (10), an annular outer cylinder casting cavity (8) is formed between the outer side of the mold core group and the casting mold group, an inner cylinder casting cavity (9) is formed between the outer side of the core column (7) and the mold core a (5), the inner cylinder casting cavity (9) and the outer cylinder casting cavity (8) are communicated through the vane forming cavity (10), and the lower end of the sprue (4) is communicated with the outer cylinder casting cavity (8).

2. The axial flow pump outlet casting mold according to claim 1, wherein: The outer end of the core column (7) is conical, and the inner cylinder casting cavity (9) is concentric with the outer cylinder casting cavity (8).

3. The axial flow pump outlet casting mold of claim 2, wherein: The upper side of the casting mold group is provided with a box-shaped casting bucket (2) beside the sprue (4), and the lower end of the casting bucket (2) is provided with a turnover (3) for installation.

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