Crucible venting method and structure

Abstract

The application discloses a kind of crucible exhaust method and structure, the structure includes upper layer crucible and lower layer crucible stacked together, and uniformly distributed carbon powder cavity corresponding to position is formed on upper layer crucible and lower layer crucible, recessed edge on bottom surface and convex edge on top surface are respectively machined on the periphery of bottom surface of upper layer crucible and top surface of lower layer crucible, and bottom surface exhaust groove and top surface exhaust groove are respectively formed on the bottom surface of upper layer crucible and the top surface of lower layer crucible, the bottom surface exhaust groove and the top surface exhaust groove are arranged in the form of misaligned tongue and groove with convex top and concave bottom or concave top and convex bottom.The application fundamentally solves the technical problem of poor exhaust of volatile gas during carbonization and graphitization, which is a common problem, and has great significance for reducing production operation risk and improving the service life of the crucible.The application also effectively avoids the problems of carbon powder escape and mixing of carbon powder and insulation material, and improves the quality of graphitized carbon powder.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of crucible exhaust method and structure, belong to industrial furnace technical field. BACKGROUND

[0002] At present, various graphitization furnaces or high-temperature calcination furnaces are mainly used in the production of graphitized carbon powder or purified carbon powder, using crucibles as containers or cavities to fill carbon powder, and then heating the crucible to graphitize or purify the carbon powder in the crucible at high temperature, thereby producing graphitized carbon powder or purified carbon powder.

[0003] During the graphitization or purification of carbon powder, volatile and ash components contained in the carbon powder will continuously escape in the form of gas and accumulate together under high temperature conditions. The crucible used to fill the carbon powder is a closed container. If the gas generated during graphitization cannot be effectively discharged in time, it is easy to cause the furnace to be blown out, even to cause an explosion, thereby causing serious safety accidents. Currently, the crucible used in the graphitization or purification of carbon powder is mainly a flat crucible, and the volatile gas generated can only be discharged through the gap between the crucibles. The exhaust is difficult, the production risk is high, and the service life of the crucible is short. SUMMARY

[0004] The present application aims to provide a kind of crucible exhaust method and structure, solve the problem of poor exhaust of volatile gas during the graphitization of carbon powder, and the method or device has the advantages of simple structure, easy manufacturing, low production cost, high stability during production, etc. The production safety and service life of the crucible during the graphitization of carbon powder are improved.

[0005] The technical solution of the present application is a kind of crucible exhaust method, including adjacent crucibles stacked together, and an exhaust groove is arranged between the adjacent crucibles. The exhaust groove is arranged in the form of a staggered tongue structure with convex upper and concave lower or concave upper and convex lower, thereby forming a structural cavity between the adjacent crucibles. The volatile gas produced during the graphitization or purification of carbon powder is discharged from the crucible through the structural cavity.

[0006] In the above method, the staggered tongue structure has a material blocking function, which can prevent the carbon powder in the crucible from being discharged through the exhaust groove, and also prevent the heat preservation material outside the crucible from entering the crucible cavity through the exhaust groove and mixing with the carbonization material.

[0007] Meanwhile, the application also provides a crucible exhaust structure constructed by the crucible exhaust method of claim 1 or 2, which comprises an upper crucible and a lower crucible stacked together, and position corresponding carbon powder cavities are uniformly distributed on the upper crucible and the lower crucible, a bottom concave edge and a top convex edge are respectively machined on the bottom periphery of the upper crucible and the top periphery of the lower crucible, and a bottom exhaust groove and a top exhaust groove are respectively formed on the bottom of the upper crucible and the top of the lower crucible, wherein the bottom exhaust groove and the top exhaust groove are arranged in a staggered tongue and groove structure with the top convex and the bottom concave or the top concave and the bottom convex.

[0008] Further, the top exhaust groove comprises an internal communication groove and an external exhaust groove, the internal communication groove is communicated with all the carbon powder cavities, and the bottom exhaust groove is arranged between the internal communication groove and the external exhaust groove.

[0009] Further, the carbon powder cavities are arranged in a plum blossom shape.

[0010] Due to the above technical scheme, the application has the advantages that the application fundamentally solves the technical problem of poor volatile gas exhaust during carbonization and graphitization, which is of great significance for reducing the production operation risk and prolonging the service life of the crucible, and the application also effectively avoids the problems of carbon powder escape and carbon powder mixing with the heat preservation material, thereby improving the quality of the graphitized carbon powder. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 is an assembly structure schematic diagram of the application;

[0012] Fig. 2 is a bottom structure schematic diagram of the upper crucible;

[0013] Fig. 3 is a top structure schematic diagram of the lower crucible.

[0014] Mark explanation: 1-upper crucible, 2-lower crucible, 3-top convex edge, 4-bottom concave edge, 5-top exhaust groove, 6-bottom exhaust groove, 7-carbon powder cavity. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantages of the application more clear, the application will be further described in detail below in combination with the drawings and examples.

[0016] Embodiment of the application:

[0017] Reference Figs. 1-3The application discloses a crucible exhaust structure, which comprises upper and lower crucibles 1 and 2 stacked together, and carbon powder cavities 7 are uniformly distributed on the upper and lower crucibles 1 and 2 in a position corresponding mode; a bottom concave edge 4 and a top convex edge 3 are respectively machined on the bottom periphery of the upper crucible 1 and the top periphery of the lower crucible 2, and the bottom concave edge 4 and the top convex edge 3 are matched with each other, so that the upper and lower crucibles 1 and 2 are more stable and convenient when stacked together; meanwhile, a bottom exhaust groove 6 and a top exhaust groove 5 are respectively arranged on the bottom of the upper crucible 1 and the top of the lower crucible 2, and the bottom exhaust groove 6 and the top exhaust groove 5 are arranged in a staggered tongue and groove structure mode with the top convex and the bottom concave or the top concave and the bottom convex.

[0018] The working principle of the application is as follows: the exhaust grooves are arranged between the upper and lower crucibles 1 and 2, and the exhaust grooves are arranged in a staggered tongue and groove structure mode with the top convex and the bottom concave or the top concave and the bottom convex, so that a structural cavity is formed between the upper and lower crucibles 1 and 2, and the volatile gas produced in the carbon powder graphitization or purification process is exhausted from the crucible through the structural cavity; meanwhile, the staggered tongue and groove structure has a material blocking function, which can prevent the carbon powder in the crucible from being exhausted through the exhaust grooves, and also can prevent the heat preservation material outside the crucible from entering the crucible cavity through the exhaust grooves to mix with the carbonization.

Claims

1. A crucible venting method, comprising adjacent crucibles stacked together, characterized in that: The crucible includes an upper crucible (1) and a lower crucible (2) stacked together. The crucible is characterized by having carbon powder cavities (7) evenly distributed on both the upper crucible (1) and the lower crucible (2). The bottom periphery of the upper crucible (1) and the top periphery of the lower crucible (2) are respectively machined with mutually matching bottom concave edges (4) and top convex edges (3). At the same time, bottom exhaust grooves (6) and top exhaust grooves (5) are respectively opened on the bottom surface of the upper crucible (1) and the top surface of the lower crucible (2). The bottom exhaust grooves (6) and the top exhaust grooves (5) are arranged in a staggered tenon structure with an upper convex and lower concave or an upper concave and lower convex shape. The top surface exhaust groove (5) includes an internal connecting groove and an external exhaust groove. The internal connecting groove is connected to all carbon powder chambers (7). The bottom surface exhaust groove (6) is constructed between the internal connecting groove and the external exhaust groove. The carbon powder material chambers (7) are all arranged in a plum blossom shape; the carbon powder material chambers (7) are composed of a central material chamber (9) and a group of edge material chambers (8) arranged in a circle. The multiple edge material chambers (8) are connected by annular grooves, and the annular grooves are connected to the central material chamber (9) through four straight grooves. The crucible venting method includes: Exhaust grooves are provided between adjacent crucibles, and the exhaust grooves are arranged in a staggered tenon structure with an upper convex and lower concave or upper concave and lower convex shape, thereby forming a structural cavity between adjacent crucibles. Volatile gases produced during the graphitization or purification of carbon powder are discharged from the crucibles through the structural cavity.

2. The crucible venting method according to claim 1, characterized in that: The aforementioned misaligned tenon structure has a material isolation function, which can prevent the carbon powder in the crucible from being discharged through the exhaust groove, and can also prevent the insulation material outside the crucible from entering the crucible cavity through the exhaust groove and mixing with the carbonization material.

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