Heat preservation type exothermic riser

Abstract

The utility model belongs to the technical field of exothermic risers, and particularly relates to a heat preservation type exothermic riser which comprises a cylinder assembly and a heat preservation assembly arranged on the inner wall of the cylinder assembly, the cylinder assembly comprises a cylinder shell, a combined cavity is reserved in the cylinder shell, a combined cavity thread is arranged on the circumferential inner wall of the combined cavity, and the combined cavity thread is matched with the heat preservation assembly. According to the heat preservation type exothermic riser, through combined application of accessories, molten iron on the upper portion of the exothermic riser generates heat to enable molten iron in the riser not to be solidified, the heat preservation assembly is arranged on the lower portion of the exothermic riser, the molten iron does not generate heat and only preserves heat, and the situation that the temperature of the heat-preserved molten iron is too high, so that poor spheroidization is caused is avoided; in this way, when a casting is fed by the riser, only the molten iron of the heat preservation part is fed into the casting, feeding efficiency is guaranteed, the problem of spheroidization is solved, and the structure is simple and easy to achieve.

Description

Technical Field

[0001] The utility model relates to the technical field of exothermic risers, in particular to a heat-insulating exothermic riser. Background Technique

[0002] The fluidity of austenitic ductile iron liquid is poor, and the pouring temperature is about 100 °C higher than that of ordinary ductile iron. The pouring temperature is controlled to 1520 ± 10 °C. When the iron liquid enters the exothermic riser and the riser burns, the temperature of the internal iron liquid will reach about 1550 °C.

[0003] In the prior art, when the temperature of the internal iron liquid in the riser reaches about 1550 °C after the riser burns, the iron liquid in the riser is too hot, and the spheres (spheres in ductile iron) will be burned out. During the feeding process of the riser, the burned-out spheres will be fed into the casting, resulting in poor spheroidization of the casting, and the exothermic riser cannot achieve a high-efficiency feeding effect either. Content of the Utility Model

[0004] The purpose of the utility model is to provide a heat-insulating exothermic riser to solve the problem that when the temperature of the internal iron liquid in the riser reaches about 1550 °C after the riser burns, the iron liquid in the riser is too hot, and the spheres (spheres in ductile iron) will be burned out. During the feeding process of the riser, the burned-out spheres will be fed into the casting, resulting in poor spheroidization of the casting, and the exothermic riser cannot achieve a high-efficiency feeding effect either, which is put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: including a cylindrical component and a heat-insulating component arranged on the inner wall of the cylindrical component;

[0006] Among them:

[0007] The cylindrical component, the cylindrical component includes a cylindrical shell, a combined cavity is reserved inside the cylindrical shell, and combined cavity threads are arranged on the circumferential inner wall of the combined cavity;

[0008] The heat-insulating component, the heat-insulating component includes a heat-insulating ring that cooperates with the combined cavity.

[0009] Preferably, the top of the cylindrical component is integrally connected with a top shell, and a heating element is arranged at the bottom of the top shell.

[0010] Preferably, a chamber is reserved inside the cylindrical shell, and the shape of the chamber is frustum-shaped.

[0011] Preferably, the circumferential outer wall of the heat-insulating ring is provided with heat-insulating ring threads that match the combined cavity threads.

[0012] Preferably, a first heat-insulating layer is tightly pressed on the inner wall of the heat-insulating ring, an embedded block is arranged on the inner wall of the first heat-insulating layer, and a second heat-insulating layer is clamped and matched with the inner wall of the embedded block.

[0013] Preferably, the materials of the first heat preservation interlayer, the embedded block and the second heat preservation interlayer are all calcium silicate.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] For this heat preservation type exothermic riser, through the combined application of accessories, the molten iron at the upper part of the exothermic riser generates heat to prevent the molten iron in the riser from solidifying. The lower part is provided with a heat preservation component. The molten iron does not generate heat but only keeps warm. The heat-preserved molten iron will not cause poor spheroidization due to excessive temperature. When the riser compensates for the shrinkage of the casting, only the heat-preserved molten iron will be compensated into the casting, which not only ensures the compensation efficiency but also solves the spheroidization problem, and the structure is simple and easy to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the present utility model will be described in detail below with reference to the drawings and specific embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. Among them:

[0017] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 is a schematic cross-sectional view of the overall structure of the present utility model;

[0019] Figure 3 is a schematic diagram of the heat preservation component of the present utility model;

[0020] Figure 4 is a schematic cross-sectional view of the heat preservation component of the present utility model.

[0021] In the figure: 100, cylindrical component; 110, cylindrical shell; 120, top shell; 130, heating element; 140, chamber; 150, combined chamber; 160, combined chamber thread; 200, heat preservation component; 210, heat preservation ring; 220, heat preservation ring thread; 230, first heat preservation interlayer; 240, embedded block; 250, second heat preservation interlayer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0023] In the description of the present utility model, the meaning of "a plurality of" is two or more, unless otherwise specifically defined.

[0024] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "provided with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can 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 circumstances.

[0025] The present utility model provides a heat-insulating type hot riser. Through the combined use of accessories, the molten iron at the upper part of the hot riser generates heat to prevent the molten iron in the riser from solidifying, and the lower part is provided with a heat-insulating component. The molten iron does not generate heat but only keeps warm. The heat-insulated molten iron does not have too high a temperature to cause poor spheroidization. In this way, when the riser compensates for the casting, only the heat-insulated part of the molten iron is compensated into the casting, which not only ensures the compensation efficiency but also solves the spheroidization problem. The structure is simple and easy to implement. Please refer to Figures 1 to 4 , including a cylindrical component 100 and a heat-insulating component 200 arranged on the inner wall of the cylindrical component 100;

[0026] The cylindrical component 100 includes a cylindrical shell 110. A combined cavity 150 is reserved inside the cylindrical shell 110, and a combined cavity thread 160 is arranged on the circumferential inner wall of the combined cavity 150;

[0027] The heat-insulating component 200 includes a heat-insulating ring 210 that cooperates with the combined cavity 150;

[0028] In specific use, first, a top shell 120 is arranged on the cylindrical shell 110. The top shell 120 is kept sealed with the cylindrical shell 110, and a heating element 130 is provided at the bottom of the top shell 120. At the same time, there is a chamber 140 and a combined chamber 150 inside the cylindrical shell 110. The inner wall of the combined chamber 150 is integrally formed with a combined chamber thread 160. The overall structure of the heat preservation component 200 matches the combined chamber 150. When the heat preservation ring 210 is rotated, the heat preservation ring thread 220 on the heat preservation ring 210 will be connected to the combined chamber thread 160. In order to ensure the heat preservation effect, there is a first heat preservation layer 230 in the heat preservation ring 210, and an embedded block 240 is installed on the inner wall of the first heat preservation layer 230 to cooperate with the second heat preservation layer 250, so as to improve the use effect of the heat preservation ring 210.

[0029] Meanwhile, to facilitate ensuring the combination effect, specifically, the top shell 120 is integrally formed and connected to the top of the cylindrical component 100. A heating element 130 is arranged at the bottom of the top shell 120. The heating element 130 can also be in the shape of a rod and is fixed at the top end inside. The heating element 130 is fixed by a secondary forming method. The heating element 130 can be made of a heat material containing thermite components.

[0030] Subsequently, to create sufficient internal space, specifically, a chamber 140 is reserved inside the cylindrical shell 110, and the shape of the chamber 140 is frustum-shaped.

[0031] Immediately afterwards, to facilitate the effective combination of the heat preservation ring 210 and the combined chamber 150, specifically, the circumferential outer wall of the heat preservation ring 210 is provided with a heat preservation ring thread 220 that matches the combined chamber thread 160.

[0032] Furthermore, to ensure the heat preservation effect, specifically, a first heat preservation layer 230 is tightly pressed against the inner wall of the heat preservation ring 210. An embedded block 240 is arranged on the inner wall of the first heat preservation layer 230, and the inner wall of the embedded block 240 is clamped and matched with a second heat preservation layer 250. The materials of the first heat preservation layer 230, the embedded block 240, and the second heat preservation layer 250 are all calcium silicate.

[0033] In some embodiments, the heat preservation ring 210 can be made of heat-insulating and heat-preserving materials such as sand, cenospheres, fly ash, and refractory fiber cotton.

[0034] In addition, the conventional accessories and conventional structures involved in the present utility model are all prior arts, which can be fully realized by those skilled in the art without further elaboration. The content protected by the present utility model does not involve improvements to the internal structure and method either.

[0035] Although the present utility model has been described above with reference to embodiments, various improvements can be made thereto and components thereof can be replaced with equivalents without departing from the scope of the present utility model. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed by the present utility model can be combined with each other in any way, and the exhaustive description of these combinations is not given in this specification only for the consideration of saving space and resources. Therefore, the present utility model is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A heat-insulating heating riser, characterized in that: It comprises a cylindrical component (100) and a heat-insulating component (200) arranged on the inner wall of the cylindrical component (100); in: A cylinder assembly (100), the cylinder assembly (100) comprising a cylinder shell (110), a combination cavity (150) being reserved inside the cylinder shell (110), and a combination cavity thread (160) being provided on a circumferential inner wall of the combination cavity (150); A heat preservation component (200), wherein the heat preservation component (200) comprises a heat preservation ring (210) matched with the combined cavity (150).

2. A heat-insulating exothermic riser according to claim 1, characterized in that: The top of the cylinder assembly (100) is integrally formed and connected with a top shell (120), and a heating element (130) is arranged at the bottom of the top shell (120).

3. A heat-insulating exothermic riser according to claim 2, characterized in that: A chamber (140) is reserved inside the cylindrical shell (110), and the chamber (140) is in the shape of a truncated cone.

4. A heat-insulating exothermic riser according to claim 3, characterized in that: The circumferential outer wall of the thermal insulation ring (210) is provided with a thermal insulation ring thread (220) matching the combined cavity thread (160).

5. The heat-insulating exothermic riser according to claim 4, characterized in that: The inner wall of the thermal insulation ring (210) is tightly pressed with a thermal insulation interlayer 1 (230), the inner wall of the thermal insulation interlayer 1 (230) is provided with an embedded block (240), and the inner wall of the embedded block (240) is snap-fitted with a thermal insulation interlayer 2 (250).

6. The heat-insulating exothermic riser according to claim 5, characterized in that: The materials of the thermal insulation interlayer 1 (230), the embedded block (240) and the thermal insulation interlayer 2 (250) are all calcium silicate.

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