Anti-oxidation protection device for riser for casting

Abstract

The utility model relates to a riser anti-oxidation protection device for casting, which comprises an annular pipe, an air inlet pipe, hoops, hooks and hanging rods, the annular pipe is communicated and connected with the air inlet pipe, a plurality of air holes are uniformly distributed on the bottom surface of the annular pipe, a plurality of hoops are arranged between pipe bodies on two sides of the annular pipe, the hooks are connected onto the hoops, and the hanging rods are arranged on the annular pipe. And the hook is hung on the hanging rod. The annular pipe can be changed according to the shape of an open type riser so as to adapt to different riser shapes, and the application range is wide. The protection device is hoisted above the riser, and the shape of the riser is not damaged. Argon is uniformly blown to the riser through the ventilation opening, and the flow direction of molten steel cannot be affected.

Description

Technical Field

[0001] The utility model relates to the technical field of casting, in particular to an anti-oxidation protection device for a riser in casting. Background Art

[0002] At present, the casting process is relatively mature, and the quality requirements for products are getting higher and higher. For an open riser, it is easy to come into contact with air during the pouring of molten steel, thereby oxidizing the molten steel, forming oxide inclusions and entering the casting, resulting in relatively large defects in the subsequent process and poor quality of the casting. To effectively ensure the pouring quality of molten steel, a device for protecting the open riser needs to be studied.

[0003] The existing patent CN 204700296 U discloses an argon protection device for a pouring cup of a heavy-duty gas turbine exhaust cylinder casting, which includes an argon inlet pipe, at least two layers of argon blowing pipes, at least two connecting pipes and an argon protection cover. The argon blowing pipes are of a ring structure and are connected through the connecting pipes. The argon inlet pipe is connected to one of the connecting pipes. An argon protection cover is arranged outside the argon blowing pipes and the connecting pipes, and a plurality of argon outlets are evenly arranged inside the argon blowing pipes. This device is not suitable for an open riser. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide an anti-oxidation protection device for a riser in casting, which can prevent the riser from coming into contact with air and avoid oxidation of molten steel.

[0005] To achieve the above object, the utility model adopts the following technical solutions:

[0006] An anti-oxidation protection device for a riser in casting includes an annular pipe, an inlet pipe, a hoop, a hook and a hanging rod. The annular pipe is connected and communicated with an inlet pipe. A plurality of air-permeable holes are evenly distributed on the bottom surface of the annular pipe. A plurality of hoops are arranged between the two side pipe bodies of the annular pipe. Hooks are connected to the hoops, and the hooks are hung on the hanging rod.

[0007] The inlet pipe is an angled elbow pipe.

[0008] Argon is introduced into the inlet pipe.

[0009] The hoops are evenly distributed or symmetrically arranged on the annular pipe.

[0010] The bottom of the hook is fixedly connected to the hoop. A semi-circular hanging ring is arranged at the top of the hook, and the hook is hung on the hanging rod through the semi-circular hanging ring.

[0011] The hooks are symmetrically arranged on the hoop.

[0012] Compared with the existing technology, the beneficial effects of the utility model are:

[0013] The annular tube of the present utility model can be changed according to the shape of the open riser to adapt to different riser shapes, with a wide range of applications. The protection device is hoisted above the riser without damaging the riser shape. Argon is evenly blown into the riser through the air vents without affecting the flow direction of the molten steel.

[0014] The present utility model is convenient to operate, provides effective protection for the casting production of special steel, and ensures the quality of the castings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a perspective view of the present utility model.

[0016] Figure 2 is a side view of the present utility model.

[0017] Figure 3 is a schematic diagram of the bottom of the annular tube.

[0018] Figure 4 is a schematic diagram of the hook.

[0019] Figure 5 is a schematic diagram of the application of the present utility model.

[0020] In the figure: annular tube 1, inlet pipe 2, hoop 3, hook 4, hanging rod 5, air vent 6, semi-circular hanging ring 7. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In the description of the present utility model, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0022] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0023] Such as Figures 1-4, A riser anti-oxidation protection device for casting, comprising an annular pipe 1, an air inlet pipe 2, a hoop 3, a hook 4, and a hanging rod 5. The annular pipe 1 is connected to an air inlet pipe 2 in a communicating manner. A plurality of air permeable holes 6 are evenly distributed on the bottom surface of the annular pipe 1. A plurality of hoops 3 are provided between the two side pipes of the annular pipe 1. Hooks 4 are connected to the hoops 3, and the hooks 4 are hung on the hanging rod 5.

[0024] The air inlet pipe 2 is a bent pipe with an angle.

[0025] The air inlet pipe 2 is filled with argon gas.

[0026] The hoops 3 are evenly distributed or symmetrically arranged on the annular pipe.

[0027] The bottom of the hook 4 is fixedly connected to the hoop 3. A semi-circular hanging ring 7 is provided at the top of the hook 4, and the hook 4 is hung on the hanging rod 5 through the semi-circular hanging ring 7.

[0028] The hooks 4 are symmetrically arranged on the hoop 3.

[0029] Working principle:

[0030] The protection device is installed above the open riser, and the hanging rod is fixed to the mold. During the pouring process, argon gas is introduced, and the argon gas is blown towards the riser through the air permeable holes 6 to prevent the riser from contacting the air, achieving the purpose of preventing the molten steel from oxidizing.

[0031] To make the purpose, technical solution and technical effect of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. However, the embodiments described below are only a part of the embodiments of the present invention, rather than all of the embodiments. Combining the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0032] Embodiment 1

[0033] A riser anti-oxidation protection device for casting, comprising an annular pipe 1, an air inlet pipe 2, a hoop 3, a hook 4, and a hanging rod 5. The annular pipe 1 is square. The annular pipe 1 is connected to an air inlet pipe 2, and the air inlet pipe 1 is filled with argon gas. The inside of the annular pipe 1 and the air inlet pipe 2 is in communication. A plurality of air permeable holes 6 are evenly distributed on the bottom surface of the annular pipe 1. Two hoops 3 are symmetrically provided between the two side pipes of the annular pipe 1. Hooks 4 are connected to the hoops 3. The bottom of the hook 4 is fixedly connected to the hoop 3. A semi-circular hanging ring 6 is provided at the top of the hook 4, and the hook 4 is hung on the hanging rod 5 through the semi-circular hanging ring 6.

[0034] Embodiment 2

[0035] A riser anti-oxidation protection device for casting, comprising an annular tube 1, an inlet pipe 2, a hoop 3, a hook 4, and a hanging rod 5. The annular tube 1 is in a long strip shape and is connected to an inlet pipe 2. Argon gas is introduced into the inlet pipe 1. The annular tube 1 and the inlet pipe 2 are internally connected, and the inlet pipe 1 is a 90-degree elbow. A plurality of air-permeable holes 6 are evenly distributed on the bottom surface of the annular tube 1. Four hoops 3 are evenly distributed between the two side tubes of the annular tube 1. Hooks 4 are connected to the hoops 3. The bottom of the hook 4 is fixedly connected to the hoop 3. A semi-circular hanging ring 6 is provided at the top of the hook 4. The hook 4 is hung on the hanging rod 5 through the semi-circular hanging ring 6. The hooks 4 are symmetrically arranged on the hoop 3.

[0036] Application example

[0037] The riser anti-oxidation protection device for casting is applied to the casting of cylinder blocks (see Figure 5 ). The protection devices are respectively installed above the open risers on both sides of the cylinder block mold. During the pouring process, argon gas is continuously blown into the risers for protected casting. There are no obvious defects in the castings, improving the quality of the castings.

[0038] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and basic spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A riser anti-oxidation protection device for casting, characterized in that, It includes an annular pipe, an air inlet pipe, a hoop, a hook and a hanging rod. The annular pipe is connected and communicated with an air inlet pipe. A plurality of air permeable holes are evenly distributed on the bottom surface of the annular pipe. A plurality of hoops are provided between the two side pipes of the annular pipe. Hooks are connected to the hoops, and the hooks are hung on the hanging rod.

2. The anti-oxidation protection device for a riser in casting according to claim 1, wherein, The air inlet pipe is an angled elbow pipe.

3. A riser anti-oxidation protection device for casting according to claim 1, characterized in that, Argon is introduced into the air inlet pipe.

4. A riser anti-oxidation protection device for casting according to claim 1, characterized in that, The hoops are evenly distributed or symmetrically arranged on the annular pipe.

5. A riser anti-oxidation protection device for casting according to claim 1, characterized in that, The bottom of the hook is fixedly connected to the hoop. A semi-circular hanging ring is provided at the top of the hook, and the hook is hung on the hanging rod through the semi-circular hanging ring.

6. The oxidation prevention protection device for a riser used in casting according to claim 1, characterized in that, The hooks are symmetrically arranged on the hoop.

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