Pouring system for preventing root of valve body flange from shrinkage porosity

Abstract

The utility model relates to the field of precision casting, and particularly discloses a pouring system for preventing root shrinkage porosity of valve body flanges, which comprises a valve body, a vertical pouring gate, a pouring cup and a transverse pouring gate, flanges are arranged at the upper end and the lower end of the valve body, a through hole penetrating through the flanges is arranged in the middle of the valve body, the upper end of the vertical pouring gate is connected with the pouring cup, and the transverse pouring gate is connected with the vertical pouring gate. A patch is arranged on the end surface of the flange and is connected with the cross gate; according to the utility model, the end faces of the flanges are provided with the patches, and the flanges at the two ends of the valve body are fed by using the patches, so that the defect of shrinkage porosity of the flanges is fundamentally overcome, the product quality of the valve body is improved, the manufacturing process is simplified, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of precision casting, in particular to a pouring system for preventing the root of a valve body flange from shrinking. Background Art

[0002] The valve body of the flow meter has a thin wall thickness, a thick flange, and a small inner hole size, which is prone to shrinkage defects at the root of the flange, affecting product quality. The current solution is to pour water at the root of the flange during pouring to avoid overheating. However, this approach is not only cumbersome to operate, but also unable to effectively control the amount of water pouring, which is prone to cause excessive cooling and cannot fundamentally solve the problem of shrinkage at the root of the flange. For this reason, the present application proposes a pouring system for preventing shrinkage at the root of the valve body flange. Utility Model Content

[0003] In view of the existing problems, the utility model provides a pouring system for preventing the root of the valve body flange from shrinking, which can effectively solve the problems raised in the background technology.

[0004] In order to solve the above problems, the present invention adopts the following technical solutions:

[0005] A pouring system for preventing shrinkage at the root of a valve body flange comprises a valve body, wherein flanges are provided at the upper and lower ends of the valve body, and a through hole is provided in the middle of the valve body that penetrates the flange. The system also comprises a vertical runner, a pouring cup and a horizontal runner, wherein the upper end of the vertical runner is connected to the pouring cup, the horizontal runner is connected to the vertical runner, and the end face of the flange is provided with a subsidy that is connected to the horizontal runner.

[0006] As a further solution of the present invention: the runner is a right-angled trapezoidal structure.

[0007] As a further solution of the present invention: a surface of the subsidy facing away from the flange is an inclined surface and the slope is consistent with the slope of the inclined surface on the runner.

[0008] As a further solution of the present invention: the subsidy is a circular ring structure, and the outer diameter of the subsidy is half of the flange diameter.

[0009] As a further solution of the present invention: the subsidy is concentric with the through hole, and the central angle of the subsidy is greater than 180°.

[0010] As a further solution of the present invention: the inner diameter of the patch is 2.5 times the diameter of the through hole.

[0011] As a further solution of the present invention: the vertical runner is connected to the side surface of the valve body through a gate.

[0012] As a further solution of the present invention: a plastic cover is provided on the pouring cup, the diameter of the plastic cover is larger than the diameter of the cup mouth of the pouring cup, and the plastic cover is provided with a handle.

[0013] Compared with the existing technology, the beneficial effects of the present invention are: the present invention provides subsidies on the end faces of the flanges, and uses the subsidies to compensate for the shrinkage of the flanges at both ends of the valve body, thereby fundamentally solving the shrinkage defects of the flanges, improving the product quality of the valve body, simplifying the manufacturing process, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model from one perspective;

[0015] Figure 2 This is a three-dimensional schematic diagram of the overall structure of the utility model from another perspective;

[0016] Figure 3 This is a front view of the overall structure of the utility model;

[0017] Figure 4 It is a top view of the overall structure of the utility model.

[0018] In the figure: 1. Valve body; 2. Flange; 3. Through hole; 4. Vertical sprue; 5. Sprue cup; 6. Horizontal sprue; 7. Substrate; 8. Sprue; 9. Plastic cover; 10. Handle. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Combine Figures 1 to 4 To describe this embodiment, this embodiment provides a casting system for preventing the root of the valve body flange from shrinking, which includes a valve body 1. Flanges 2 are provided at the upper and lower ends of the valve body 1, and a through hole 3 is provided in the middle of the valve body 1 to penetrate the flange 2. In each group of casting systems, two valve bodies 1 are set and are symmetrically arranged. A vertical runner 4 is set between the two valve bodies 1. The upper end of the vertical runner 4 is connected to the pouring cup 5, and the vertical runner 4 is connected to the horizontal runner 6. There are two horizontal runners 6 and the horizontal runners 6 are respectively connected to the upper and lower flanges 2 of the valve body 1. The end face of the flange 2 is provided with a subsidy 7, and the subsidy 7 is also connected to the horizontal runner 6.

[0021] The runner 6 is a right-angled trapezoidal structure, the upper runner 6 has an inclined surface located on the upper surface, the lower runner 6 is located on the lower surface, and the surface of the patch 7 facing away from the flange 2 is an inclined surface with a slope consistent with that of the inclined surface on the runner 6 .

[0022] The patch 7 is a circular ring structure with an outer diameter of half the diameter of the flange 2. The patch 7 is concentric with the through hole 3, and the central angle of the patch 7 is greater than 180 degrees. The inner diameter of the patch 7 is 2.5 times the diameter of the through hole 3.

[0023] The vertical runner 4 is connected to the side of the valve body 1 through a gate 8 , and the gate 8 is used to compensate for the shrinkage of the side opening of the valve body 1 .

[0024] A plastic cover 9 is provided on the pouring cup 5. The diameter of the plastic cover 9 is larger than the diameter of the cup mouth of the pouring cup 5. The plastic cover 9 is provided with a handle 10, which can effectively prevent the sand material from falling into the mold cavity after dewaxing, causing the casting to be scrapped after processing.

[0025] The working principle of the present invention is as follows: by arranging a subsidy 7 on the end face of the flange 2, the subsidy 7 is used to compensate the flanges 2 at both ends of the valve body 1, thereby fundamentally solving the shrinkage defect of the flange 2, improving the product quality of the valve body 1, simplifying the manufacturing process, and improving production efficiency.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pouring system for preventing shrinkage at the root of a valve body flange, comprising a valve body, flanges at the upper and lower ends of the valve body, and a through hole penetrating the flanges in the middle of the valve body, characterized in that: It also includes a vertical runner, a pouring cup and a horizontal runner. The upper end of the vertical runner is connected to the pouring cup, and the horizontal runner is connected to the vertical runner. The end face of the flange is provided with a subsidy, and the subsidy is connected to the horizontal runner.

2. A pouring system for preventing shrinkage of the valve body flange root according to claim 1, characterized in that: The runner is a right-angled trapezoidal structure.

3. A pouring system for preventing shrinkage of the valve body flange root according to claim 2, characterized in that: A surface of the subsidy facing away from the flange is an inclined surface, and the slope thereof is consistent with the slope of the inclined surface on the runner.

4. A pouring system for preventing shrinkage of the valve body flange root according to claim 1, characterized in that: The subsidy is a circular ring structure, and the outer diameter of the subsidy is half of the flange diameter.

5. A pouring system for preventing shrinkage of the valve body flange root according to claim 4, characterized in that: The subsidy is concentric with the through hole, and the central angle of the subsidy is greater than 180°.

6. A pouring system for preventing shrinkage of the valve body flange root according to claim 4, characterized in that: The inner diameter of the patch is 2.5 times the diameter of the through hole.

7. A pouring system for preventing shrinkage of the valve body flange root according to claim 1, characterized in that: The vertical runner is connected to the side surface of the valve body through a gate.

8. A pouring system for preventing shrinkage of the valve body flange root according to claim 1, characterized in that: The pouring cup is provided with a plastic cover, the diameter of the plastic cover is larger than the diameter of the cup mouth of the pouring cup, and the plastic cover is provided with a handle.

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