Molten aluminum heat preservation discharge port

Abstract

The utility model discloses a molten aluminum heat preservation discharge port which comprises an outer cylinder body, a conical heat insulation sleeve, an inner cylinder body and a limiting ring, a through hole is concentrically formed in the outer cylinder body, the inner cylinder body is concentrically arranged in the through hole, the front end of the inner cylinder body extends to the front portion of the outer cylinder body, the diameter of the through hole is larger than the diameter of the outer circle of the inner cylinder body, and the limiting ring is arranged on the conical heat insulation sleeve. The tail portion of the through hole is provided with a first taper hole extending to the tail end of the outer barrel, the taper heat insulation sleeve is arranged in the first taper hole, the tail portion of the inner barrel is provided with an outer taper face attached to the inner wall of the taper heat insulation sleeve, and the outer circle of the inner barrel is provided with a circle of annular protruding rib located at the front end of the outer barrel. The limiting ring is concentrically arranged on the outer side of the inner barrel and located in front of the annular convex rib. The molten aluminum heat preservation discharge port is convenient to assemble, the inner barrel body can be cleaned and replaced easily, and a heat insulation cavity is formed between the inner barrel body and the outer barrel body.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum liquid transfer, in particular to an aluminum liquid insulation discharge port. Background Art

[0002] In order to facilitate the discharge of high-temperature aluminum liquid, a corresponding discharge port needs to be installed on the vacuum ladle of aluminum liquid. The utility model patent with application number 202021551761.3 discloses a clamping device for the aluminum outlet of a vacuum ladle, and an aluminum outlet is opened on the outside of the vacuum ladle body.

[0003] In order to improve the heat resistance of the discharge port, the discharge port may include an external mounting shell and an internal heat-resistant core, and the high-temperature aluminum liquid is contacted through the inner wall of the heat-resistant core to discharge the high-temperature aluminum liquid.

[0004] During actual operation, since the heat-resistant core is in direct contact with the high-temperature aluminum liquid, it is easily heated and transfers the heat to the mounting shell, which has almost no thermal insulation effect. As a result, the high-temperature aluminum liquid is easily cooled when in contact with the heat-resistant core, which reduces its fluidity and makes it easier to solidify and remain on the inner wall of the heat-resistant core, increasing the difficulty of cleaning and maintenance. Utility Model Content

[0005] The utility model aims to provide an aluminum liquid insulation discharge port to improve the insulation effect and maintenance convenience.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A molten aluminum insulation discharge outlet comprises: an outer cylinder, a conical insulation sleeve, an inner cylinder and a limiting ring, wherein a through hole is concentrically arranged in the outer cylinder, the inner cylinder is concentrically arranged in the through hole, and the front end of the inner cylinder extends to the front of the outer cylinder, the diameter of the through hole is larger than the outer circle diameter of the inner cylinder, the tail of the through hole is provided with a first conical hole extending to the tail end of the outer cylinder, the conical insulation sleeve is arranged in the first conical hole, the tail of the inner cylinder is provided with an outer conical surface that fits the inner wall of the conical insulation sleeve, a circle of annular convex ribs located at the front end of the outer cylinder is provided on the outer circle of the inner cylinder, the limiting ring is concentrically arranged on the outside of the inner cylinder and located in front of the annular convex ribs, and a screw connected to the front end surface of the outer cylinder is provided on the limiting ring.

[0008] Wherein, the diameter of the end portion of the first tapered hole is smaller than the diameter of the through hole.

[0009] Wherein, a second tapered hole concentric with the first tapered hole is arranged at the tail of the inner cavity of the inner cylinder, and a circle of tapered chamfers connected with the second tapered hole is arranged at the tail end of the inner cylinder.

[0010] Wherein, the inner hole diameter of the limiting ring is larger than the outer circle diameter of the inner cylinder.

[0011] Wherein, a guide rod penetrating a limiting ring is arranged on the front end surface of the outer cylinder, and a guide hole corresponding to the guide rod is arranged in the limiting ring.

[0012] Wherein, the conical heat-insulating sleeve adopts a conical refractory clay heat-insulating sleeve.

[0013] Wherein, an annular groove corresponding to the annular convex rib is arranged at one end of the inner hole of the limiting ring close to the annular convex rib.

[0014] Wherein, a plurality of annular positioning grooves are arranged at intervals on the outer circle of the outer cylinder.

[0015] The beneficial effects of the utility model include: an aluminum liquid insulation discharge outlet, which is convenient for disassembly and assembly, and is beneficial for cleaning and replacement of the inner cylinder. The inner cylinder is fixed by the cooperation of the conical insulation sleeve, the annular rib and the limit ring, and an insulation cavity is formed between the inner cylinder and the outer cylinder to avoid direct transfer of heat from the inner cylinder to the outer cylinder, which is beneficial for reducing heat loss when the aluminum liquid is discharged through the inner cylinder, ensuring the fluidity of the aluminum liquid, and reducing the problem of solidified aluminum liquid residue in the inner cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 yes Figure 1 A partial enlarged view of part A. DETAILED DESCRIPTION

[0018] Combine the following Figure 1 to Figure 2 The technical solution of the utility model is further illustrated by specific embodiments.

[0019] like Figure 1 The aluminum liquid insulation discharge port shown includes: an outer cylinder 1, a conical heat-insulating sleeve 3, an inner cylinder 2 and a limiting ring 4. The outer cylinder 1 is provided with a plurality of annular positioning grooves 9 at intervals on the outer circle, which is convenient for installation on a vacuum ladle. A through hole 8 is concentrically provided in the outer cylinder 1, and the inner cylinder 2 is concentrically provided in the through hole 8, and the front end of the inner cylinder 2 extends to the front of the outer cylinder 1, which is convenient for the aluminum liquid to be discharged through the front end of the inner cylinder 2.

[0020] The diameter of the through hole 8 is larger than the outer diameter of the inner cylinder 2, and a heat-insulating cavity is formed between the inner cylinder 2 and the outer cylinder 1, so as to avoid direct transfer of heat from the inner cylinder 2 to the outer cylinder 1, which is beneficial to reduce heat loss when the aluminum liquid is discharged through the inner cylinder, ensure the fluidity of the aluminum liquid, and reduce the problem of solidified residual aluminum liquid in the inner cylinder 2.

[0021] A first tapered hole 13 extending to the tail end of the outer cylinder 1 is provided at the tail end of the through hole 8. In the present embodiment, the tapered heat insulating sleeve 3 is arranged in the first tapered hole 13. The end diameter of the first tapered hole 13 is smaller than the diameter of the through hole 8, so as to perform axial limiting of the tapered heat insulating sleeve 3 after installation.

[0022] like Figure 1 As shown, the tail of the inner cylinder 2 is provided with an outer cone 12 that fits with the inner wall of the conical insulation sleeve 3, with high fit and good sealing. In this embodiment, the conical insulation sleeve 3 adopts a conical refractory clay insulation sleeve, which has good high temperature resistance and a certain heat insulation effect. A second conical hole 11 concentric with the first conical hole 13 is provided at the tail of the inner cavity of the inner cylinder 2, and a circle of conical chamfers 10 connected to the second conical hole 11 are provided at the tail end of the inner cylinder 2, which is conducive to the aluminum liquid in the vacuum ladle entering the second conical hole 11 through the conical chamfer 10.

[0023] A circle of annular convex ribs 7 located at the front end of the outer cylinder 1 is arranged on the outer circle of the inner cylinder 2. The inner cylinder 2 and the annular convex ribs 7 can adopt an integrated silicon carbide structure with good heat resistance. The limiting ring 4 is concentrically arranged on the outside of the inner cylinder 2 and in front of the annular convex rib 7. The limiting ring 4 is provided with a screw 5 connected to the front end surface of the outer cylinder 1 to limit the annular convex rib 7.

[0024] In this embodiment, the front end face of the outer cylinder 1 is provided with a guide rod 6 that passes through the limit ring 4. The limit ring 4 is provided with a guide hole corresponding to the guide rod 6 to provide guiding support for the limit ring 4 and avoid the problem of deflection of the limit ring 4.

[0025] like Figure 2 As shown, the diameter of the inner hole 14 of the limiting ring 4 is larger than the outer diameter of the inner cylinder 2, so as to avoid direct contact between the limiting ring 4 and the inner cylinder 2, which is beneficial to reduce the heat loss of the inner cylinder 2. In this embodiment, an annular groove 15 corresponding to the annular convex rib 7 is provided at one end of the inner hole 14 of the limiting ring 4 close to the annular convex rib 7, so as to position the annular convex rib 7 and ensure the stability and concentricity of the inner cylinder 2 in the through hole 8.

[0026] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A heat preservation outlet for molten aluminum, It is characterized in that include: An outer cylinder, a conical thermal insulation sleeve, an inner cylinder and a limiting ring, wherein a through hole is concentrically arranged in the outer cylinder, the inner cylinder is concentrically arranged in the through hole, and the front end of the inner cylinder extends to the front of the outer cylinder, the diameter of the through hole is larger than the outer diameter of the inner cylinder, the tail of the through hole is provided with a first conical hole extending to the tail end of the outer cylinder, the conical thermal insulation sleeve is arranged in the first conical hole, the tail of the inner cylinder is provided with an outer conical surface that fits the inner wall of the conical thermal insulation sleeve, a circle of annular convex ribs is arranged on the outer circle of the inner cylinder and located at the front end of the outer cylinder, the limiting ring is concentrically arranged on the outside of the inner cylinder and located in front of the annular convex rib, and a screw connected to the front end surface of the outer cylinder is arranged on the limiting ring.

2. The aluminum liquid insulation discharge port according to claim 1, It is characterized in that The diameter of the end of the first tapered hole is smaller than the diameter of the through hole.

3. The aluminum liquid insulation discharge port according to claim 1, It is characterized in that The tail portion of the inner cavity of the inner cylinder is provided with a second tapered hole concentric with the first tapered hole, and the tail end of the inner cylinder is provided with a circle of tapered chamfers connected with the second tapered hole.

4. The aluminum liquid insulation discharge port according to claim 1, It is characterized in that The inner hole diameter of the limiting ring is larger than the outer circle diameter of the inner cylinder.

5. The aluminum liquid insulation discharge port according to claim 1, It is characterized in that The front end surface of the outer cylinder is provided with a guide rod penetrating the limiting ring, and the limiting ring is provided with a guide hole corresponding to the guide rod.

6. The aluminum liquid insulation discharge port according to claim 1, It is characterized in that The conical heat-insulating sleeve adopts a conical refractory mud heat-insulating sleeve.

7. The aluminum liquid insulation discharge port according to claim 1, It is characterized in that An annular groove corresponding to the annular convex rib is arranged at one end of the inner hole of the limiting ring close to the annular convex rib.

8. The aluminum liquid insulation discharge port according to claim 1, It is characterized in that A plurality of annular positioning grooves are arranged at intervals on the outer circle of the outer cylinder.

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