Simple sand mold baking device

Abstract

The utility model relates to a simple sand mold baking device which comprises a main pipeline, a natural gas pipe joint arranged at the top end of the main pipeline, a plurality of wind shields arranged between the natural gas pipe joint and the main pipeline, gaps communicated with the outside and arranged among the wind shields, and a compressed air joint arranged on the side wall of the lower end of the main pipeline. The compressed air connector communicates with the interior of the main pipeline, and a limiting supporting plate is arranged on the outer wall face of the bottom end of the main pipeline. By means of the injection-suction type principle, hot air is fed into a cavity through a pouring system, the whole cavity is baked through the hot air, and water vapor generated through baking can also escape from a dead head through the hot air.

Description

Technical Field

[0001] The utility model relates to the technical field of casting, in particular to a simple sand mold baking device. Background Art

[0002] The foundry industry generally uses raw sand and binder to make molds and cores. There is inevitably water in the raw sand and binder. During pouring, the water evaporates to produce water vapor, which is then drawn into or invaded by the molten steel into the casting, forming pores.

[0003] To reduce porosity in castings, small sand molds and cores are typically baked using a torch or dryer before assembling and pouring. Some foundries have dedicated drying pits for this purpose. For large castings, sand molds and cores are thicker and require a longer baking time, making them difficult to fully dry. If pouring is not done promptly after assembling, moisture absorption is possible. Summary of the Invention

[0004] The purpose of the utility model is to solve the problems existing in the above-mentioned prior art and to provide a simple sand mold baking device.

[0005] The specific solution of the utility model is: a simple sand mold baking device, including a main pipeline, a natural gas pipe joint is provided at the top of the main pipeline, a plurality of wind shields are installed between the natural gas pipe joint and the main pipeline, gaps connected to the outside are provided between the plurality of wind shields, a compressed air joint is provided on the side wall of the lower end of the main pipeline, the compressed air joint is connected to the inside of the main pipeline, and a limit support plate is provided on the outer wall surface of the bottom end of the main pipeline.

[0006] Furthermore, the outer end of the natural gas pipe joint is connected to a natural gas hose, and the outer end of the compressed air joint is connected to an air hose, and valves are installed on the natural gas hose and the air hose.

[0007] Furthermore, the main pipeline is a curved pipe with a bending angle of 130°-160°.

[0008] Furthermore, the distance between the limiting support plate and the bottom surface of the main pipeline is 10-20 cm.

[0009] Compared with the prior art, the utility model has the following advantages: the hot air is sent into the mold cavity through the pouring system by utilizing the injection-suction principle, the entire mold cavity is baked by the hot air, and the water vapor generated by baking can also escape from the riser through the hot air. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the utility model;

[0011] In the figure: 1. Natural gas connector; 2. Wind shield; 3. Main pipeline; 4. Limit plate; 5. Compressed air connector. DETAILED DESCRIPTION

[0012] See also Figure 1 This embodiment is a simple sand mold baking device, which includes a main pipeline 3. A natural gas pipe joint is provided at the top of the main pipeline 3. Several wind shields 2 are installed between the natural gas pipe joint and the main pipeline 3. Gaps communicating with the outside are provided between the several wind shields 2. A compressed air joint 5 is provided on the side wall of the lower end of the main pipeline 3. The compressed air joint 5 is communicated with the inside of the main pipeline 3. A limit support plate is provided on the outer wall of the bottom end of the main pipeline 3.

[0013] Furthermore, the outer end of the natural gas pipe joint is connected to a natural gas hose, and the outer end of the compressed air joint 5 is connected to an air hose, and both the natural gas hose and the air hose are equipped with valves. Furthermore, the main pipeline 3 is a curved pipe with a bending angle of 130°-160°.

[0014] Furthermore, the distance between the limit support plate and the bottom surface of the main pipe 3 is 10-20 cm. The specific implementation process of the utility model is as follows: First, open the natural gas valve; secondly, ignite at the gap of the windshield 2; then place the entire device on the pouring cup, insert the main pipe 3 into the pouring cup, and the limit support plate serves as a support on the pouring cup. Finally, open the compressed air valve, and let high-speed air into the main pipe 3. The high-speed air is ejected into the runner and brings the flame into the pouring system through the main pipe 3 in a jet-suction manner. The generated hot air is baked on the entire cavity through the pouring system.

[0015] The utility model adopts a self-made sand mold baking device, which is convenient and easy to operate, and solves the problem that large castings are difficult to bake after being assembled. At the same time, the automated long-term baking solution optimizes labor, which can reduce the porosity defects of the castings and reduce production costs.

[0016] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A simple sand mold baking device, characterized by: It includes a main pipeline, a natural gas pipe joint is provided at the top of the main pipeline, a number of wind shields are installed between the natural gas pipe joint and the main pipeline, gaps connected to the outside are provided between the wind shields, a compressed air joint is provided on the side wall of the lower end of the main pipeline, the compressed air joint is connected to the inside of the main pipeline, and a limit support plate is provided on the outer wall of the bottom end of the main pipeline.

2. A simple sand mold baking device according to claim 1, characterized in that: The outer end of the natural gas pipe joint is connected to a natural gas hose, and the outer end of the compressed air joint is connected to an air hose. Valves are installed on the natural gas hose and the air hose.

3. The simple sand mold baking device according to claim 1, characterized in that: The main pipeline is a curved pipe with a bending angle of 130°-160°.

4. The simple sand mold baking device according to claim 1, characterized in that: The distance between the limiting support plate and the bottom surface of the main pipeline is 10-20 cm.

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