Improved structure of impeller casting loam core box
By using two independent mud core boxes to manufacture the blade working face and back side respectively in impeller casting, the problem of the inability to draft mold in conventional impeller casting is solved, and the successful preparation of twisted blades is achieved.
Patent Information
- Application Number
- CN202411146404.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2024-12-27
AI Technical Summary
Conventional impeller casting mud core boxes cannot be drawn when preparing impellers of two blades, especially when the blades have large cladding angles and severe distortions, it is difficult to successfully manufacture.
Two independent mud core boxes are used to prepare the working face and back of the blade respectively. By combining the blade shape, the direct manufacturing of the specific blade shape is avoided.
The problem of the inability to draw the conventional impeller mud core box is solved, and the successful preparation of the two blades is achieved, which is suitable for impeller blades with severe distortion.
Smart Images
Figure CN119187448A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of impeller preparation, and in particular to an improved structure of an impeller casting mud core box. Background Art
[0002] The impeller casting mud core box is a necessary tooling for casting and manufacturing centrifugal pump impeller blades. Conventional impeller casting mud core box needs to manufacture a specific blade shape. When manufacturing the mud core, the impeller blades are pulled out to form a blade cavity, and molten iron is filled during casting to form the impeller blades.
[0003] For an impeller with two blades, the blade wrap angle is large and the distortion is severe, so it is impossible to demould the conventional impeller core box. Summary of the invention
[0004] The technical problem to be solved by the present invention is to provide an improved structure of the impeller casting mud core box in order to address the problem that the conventional impeller mud core box has no way to demold when preparing an impeller with two blades. The improved structure does not specifically prepare the blades, but only makes the corresponding blade working surface and back surface, and the two combined cavities form the blade shape.
[0005] The technical problem to be solved by the present invention can be achieved by the following technical solutions:
[0006] An improved structure of an impeller casting mud core box comprises: a first mud core box for preparing a blade working surface and a second mud core box for preparing a blade back surface, wherein the first mud core box and the second mud core box respectively manufacture the blade working surface and the blade fixing surface, and then the blade working surface and the blade fixing surface are combined into a blade.
[0007] In a preferred embodiment of the present invention, a blade working surface molding cavity formed by a mud core is provided in the first mud core box, and a blade back surface molding cavity formed by a mud core is provided in the second mud core box.
[0008] By adopting the above technical solution, the present invention solves the problem that a standard impeller mud core box cannot be demoulded when preparing an impeller with two blades. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is a schematic diagram of the blade structure of the present invention.
[0010] Figure 2 It is a schematic structural diagram of the first mud core box of the present invention.
[0011] Figure 3 It is a schematic structural diagram of the second mud core box of the present invention. DETAILED DESCRIPTION
[0012] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.
[0013] See also Figure 2 and Figure 3 The improved structure of the impeller casting mud core box shown in the figure includes: preparing Figure 1 The first mud core box 200 for the working surface 110 of the blade 100 and the second mud core box 300 for preparing the back side 120 of the blade 100 are shown. A blade working surface molding cavity 220 formed by the mud core 210 is arranged in the first mud core box 200, and a blade back side molding cavity 320 formed by the mud core 310 is arranged in the second mud core box 300.
[0014] The first core box 200 and the second core box 300 cast the working surface 110 of the blade 100 and the back surface 120 of the blade 100 respectively, and then the working surface 110 of the blade 100 and the fixing surface 120 of the blade 100 are combined into the blade 100 .
Claims
1. An improved structure of an impeller casting mud core box, characterized in that: include: A first mud core box for preparing the blade working surface and a second mud core box for preparing the blade back surface are prepared. The first mud core box and the second mud core box respectively manufacture the blade working surface and the blade fixing surface, and then the blade working surface and the blade fixing surface are combined into a blade.
2. The improved structure of the impeller casting mud core box according to claim 1 is characterized in that: A blade working surface molding cavity formed by a mud core is arranged in the first mud core box, and a blade back surface molding cavity formed by a mud core is arranged in the second mud core box.