Graphitization furnace with multi-cavity heat insulation structure

Abstract

The utility model relates to the technical field of graphitization devices, and particularly discloses a graphitization furnace with a multi-cavity heat insulation structure, which comprises a furnace body arranged on a workbench, the furnace body is sleeved with the first protection cover, and a first heat insulation cavity is formed between the first protection cover and the furnace body; the heat exchange pipe fitting is located in the first heat insulation cavity and spirally arranged on the outer wall face of the furnace body; the second protection cover is arranged outside the first protection cover in a sleeving mode, and a second heat insulation cavity is formed between the first protection cover and the second protection cover; the second heat insulation chamber can be used for storing workpieces; the cover plate is used for sealing and covering the first heat insulation chamber and the second heat insulation chamber; the bridge crane is used for hoisting the cover plate; the circulating assembly is used for circularly conveying a heat exchange medium into the heat exchange pipe fitting; the air supply assembly is used for conveying argon or air in the atmosphere into the second heat insulation cavity. The auxiliary heating efficiency can be improved; and the workpiece can be preheated, and heat for cooling the furnace body is recycled.

Description

Technical Field

[0001] This utility model relates to the technical field of graphitization devices, and in particular to a graphitization furnace with a multi-chamber heat-insulating structure. Background Technology

[0002] Graphitization furnaces are mainly used for high-temperature treatments such as sintering, graphitization, and purification of graphite powders for carbon materials.

[0003] In existing technologies, heat exchange tubes are usually coiled around the outer wall of the graphitization furnace. Hot or cold water is supplied into the heat exchange tubes to assist in heating or cooling the graphitization furnace.

[0004] However, heat exchange tubes are directly exposed to the outside atmosphere, which easily leads to heat loss and poor auxiliary heating effect; in addition, during the auxiliary cooling process, the heat exchanged by the heat exchange tubes is also directly lost into the atmosphere, wasting a lot of heat. Utility Model Content

[0005] In view of the above problems, this utility model provides a graphitization furnace with a multi-chamber heat insulation structure, the purpose of which is to improve the heating efficiency of the graphitization furnace and reduce heat waste.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A graphitization furnace with a multi-chamber heat-insulating structure is provided, comprising: a furnace body and a worktable, the furnace body being disposed on the worktable; a first protective cover, cylindrical in shape, installed on the worktable and fitted over the furnace body, forming a first heat-insulating chamber between the first protective cover and the furnace body; heat exchange tubes, located within the first heat-insulating chamber and coiled on the outer wall of the furnace body; a second protective cover, cylindrical in shape, installed on the worktable and fitted over the first protective cover, forming a second heat-insulating chamber between the first and second protective covers; wherein the second heat-insulating chamber can be used to store workpieces; a cover plate for sealing the first and second heat-insulating chambers; a bridge crane for lifting the cover plate; a circulation assembly for circulating heat exchange medium into the heat exchange tubes; and a gas supply assembly for supplying argon or atmospheric air into the second heat-insulating chamber.

[0008] Furthermore, the graphitization furnace also includes: several support rods, parallel to the axial direction of the first protective cover, set on the cover plate, which can drive the support rods into / out of the second heat insulation chamber when the bridge crane lifts the cover plate; several bases, set on the support rods; and a storage trough, opened on the base, for placing workpieces.

[0009] Furthermore, the graphitization furnace also includes a rubber strip embedded in the end of the second protective cover away from the worktable, for the cover plate to press against.

[0010] Furthermore, the circulation assembly includes: a feed pipe and a discharge pipe, which are respectively connected to the heat exchange tubes; and a water pump, the discharge port of which is connected to the feed pipe and is used to deliver the heat exchange medium into the heat exchange tubes.

[0011] Furthermore, the gas supply assembly includes: an inlet pipe, an outlet pipe, a valve, and an air pump. One end of the inlet pipe is connected to the second insulation chamber, and the other end of the inlet pipe is connected to the outlet of the air pump. One end of the outlet pipe is connected to the second insulation chamber, and the other end of the outlet pipe is connected to the atmosphere. The valve is installed on the outlet pipe.

[0012] Furthermore, the graphitization furnace also includes a lifting ring, which is mounted on the cover plate.

[0013] The beneficial effects of this utility model are as follows: By using this utility model, argon gas is supplied to the second insulation chamber, which surrounds the first insulation chamber, separating the external atmospheric environment and the heat exchange pipes, reducing the heat transfer efficiency between the first and second insulation chambers, reducing heat loss, and improving auxiliary heating efficiency; by supplying air from the atmosphere to the second insulation chamber through the gas supply component, the first insulation chamber is surrounded, improving the heat transfer efficiency between the first and second insulation chambers, and the workpiece in the second insulation chamber can transfer heat to the heat exchange pipes through the air as a medium, preheating the workpiece, and recovering and utilizing the heat from the furnace cooling, which can reduce the energy consumption for subsequent workpiece heating in the furnace. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the graphitization furnace provided in the embodiments of this application.

[0015] Figure 2 This is a bottom view of the cover plate provided in an embodiment of this application.

[0016] The components are as follows: 1. Furnace body; 2. Workbench; 3. Heat exchanger fittings; 41. First protective cover; 42. Second protective cover; 43. Rubber strip; 5. Cover plate; 51. Support rod; 52. Base; 521. Storage trough; 53. Workpiece; 54. Lifting ring; 61. Feed pipe; 62. Discharge pipe; 63. Water pump; 71. Air inlet pipe; 72. Air outlet pipe; 73. Valve; 74. Air pump. Detailed Implementation

[0017] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0018] Reference Figure 1As shown in the embodiment of this application, a graphitization furnace with a multi-chamber heat insulation structure is disclosed, including: a furnace body 1 and a workbench 2, the furnace body 1 being disposed on the workbench 2; a first protective cover 41, which is cylindrical, is installed on the workbench 2 and sleeved outside the furnace body 1, forming a first heat insulation chamber between the first protective cover 41 and the furnace body 1; a heat exchange tube 3, which is located in the first heat insulation chamber and is coiled on the outer wall of the furnace body 1; a second protective cover 42, which is cylindrical, is installed on the workbench 2 and sleeved outside the first protective cover 41, forming a second heat insulation chamber between the first protective cover 41 and the second protective cover 42; wherein, the second heat insulation chamber can be used to store workpiece 53; a cover plate 5, which is used to cover the first heat insulation chamber and the second heat insulation chamber; a bridge crane, which is used to lift the cover plate 5; a circulation assembly, which is used to circulate and transport the heat exchange medium into the heat exchange tube 3; and a gas supply assembly, which is used to supply argon or air from the atmosphere into the second heat insulation chamber.

[0019] In practical use, when the furnace body 1 is heating up, a high-temperature heat exchange medium is continuously supplied to the heat exchange tubes 3 through the circulation component to assist the furnace body 1 in heating up. Simultaneously, argon gas is supplied to the second insulation chamber through the gas supply component. The argon gas surrounds the first insulation chamber. Argon gas is an inert gas that separates the external atmospheric environment from the heat exchange tubes 3, reducing the heat transfer efficiency between the first and second insulation chambers, reducing heat loss, and improving the auxiliary heating efficiency.

[0020] When the furnace body 1 is cooling down, a low-temperature heat exchange medium is continuously supplied to the heat exchange tubes 3 through the circulation component to remove the heat from the furnace body 1, thereby assisting in the cooling of the furnace body 1. Simultaneously, in the second insulation chamber, air from the atmosphere is supplied to the second insulation chamber through the air supply component. The air from the atmosphere surrounds the first insulation chamber, improving the heat transfer efficiency between the first and second insulation chambers. The heat exchanged by the heat exchange tubes 3 is transferred to the second insulation chamber. The workpiece 53 in the second insulation chamber can transfer heat with the heat exchange tubes 3 through the air as a medium, transferring a certain amount of heat to the workpiece 53 to preheat it. The heat from the cooling of the furnace body 1 is recovered and reused, which can reduce the energy consumption for the subsequent heating of the workpiece 53 in the furnace body 1.

[0021] Reference Figure 2 As shown, the graphitization furnace also includes: several support rods 51, parallel to the axial direction of the first protective cover 41, and set on the cover plate 5. The bridge crane can lift the cover plate 5 and drive the support rods 51 into / out of the second heat insulation chamber; several bases 52, set on the support rods 51; and a storage trough 521, opened on the base 52, for placing the workpiece 53.

[0022] In this embodiment, a plurality of support rods 51 are provided on the cover plate 5 along the circumference of the cover plate 5; wherein, two support rods 51 form a group, and the two sides of the base 52 are welded and fixed by a group of support rods 51.

[0023] It is worth mentioning that on a set of support rods 51, along the axial direction of the first protective cover 41, there are several bases 52.

[0024] In this embodiment, the workpiece 53 is cylindrical.

[0025] It is worth mentioning that the graphitization furnace also includes a rubber strip 43, which is embedded in the end of the second protective cover 42 away from the worktable 2 for the cover plate 5 to press against; part of the rubber strip 43 is embedded in the second protective cover 42, and part of the rubber strip 43 protrudes from the second protective cover 42, and the cover plate 5 presses the rubber sleeve together to reduce the leakage of gas in the second heat insulation chamber.

[0026] Specifically, the circulation assembly includes: a feed pipe 61 and a discharge pipe 62, which are respectively connected to the heat exchange tube 3; and a water pump 63, the discharge port of which is connected to the feed pipe 61, for conveying the heat exchange medium into the heat exchange tube 3.

[0027] In this embodiment, the heat exchange medium can be either oil or water.

[0028] It is worth mentioning that the inlet of the water pump 63 is connected to a water tank for storing heat exchange medium through a pipe fitting, and the outlet pipe 62 can also be connected to another water tank for storing heat exchange medium through a pipe fitting, thereby realizing the recycling of heat exchange medium.

[0029] Specifically, the heat exchange medium can be heated by resistance, and the heat exchange medium can be cooled by a refrigeration compressor. The specific selection and installation are existing technologies and will not be elaborated here.

[0030] Specifically, the air supply assembly includes: an air inlet pipe 71, an air outlet pipe 72, a valve 73, and an air pump 74. One end of the air inlet pipe 71 is connected to the second heat insulation chamber, and the other end of the air inlet pipe 71 is connected to the air outlet of the air pump 74. One end of the air outlet pipe 72 is connected to the second heat insulation chamber, and the other end of the air outlet pipe 72 is connected to the atmosphere. The valve 73 is installed on the air outlet pipe 72.

[0031] During the installation, a three-way valve is installed at the air inlet of the air pump 74. The single three-way valve is connected to the gas storage tank for storing argon and the atmosphere through pipe fittings.

[0032] Preferably, the graphitization furnace further includes: a lifting ring 54, disposed on the cover plate 5, for use by a bridge crane to lift the cover plate 5.

[0033] Those skilled in the art will understand that although preferred embodiments of the present invention have been described, those skilled in the art, once they learn the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention. Clearly, those skilled in the art can make various alterations and modifications to the present invention without departing from its spirit and scope. Thus, if these modifications and modifications of the present invention fall within the scope of the machine equivalents of the claims of the present invention, the present invention also intends to include these modifications and modifications.

Claims

1. A graphitization furnace with a multi-chamber heat-insulating structure, characterized in that, include: Furnace body (1) and workbench (2), the furnace body (1) is set on the workbench (2); The first protective cover (41) is cylindrical and is installed on the workbench (2) and fitted over the furnace body (1). A first heat insulation chamber is formed between the first protective cover (41) and the furnace body (1). The heat exchange tube (3) is located in the first insulation chamber and is coiled on the outer wall of the furnace body (1); The second protective cover (42) is cylindrical and is installed on the workbench (2), covering the first protective cover (41). A second heat insulation chamber is formed between the first protective cover (41) and the second protective cover (42). The second heat-insulated chamber can be used to store workpieces (53); Cover plate (5) is used to cover the first and second insulation chambers; Bridge crane, used for lifting cover plates (5); A circulation assembly is used to circulate and deliver the heat exchange medium into the heat exchange tube (3); A gas supply assembly is used to supply argon or atmospheric air into the second insulated chamber.

2. The graphitization furnace with a multi-chamber heat-insulating structure according to claim 1, characterized in that, Also includes: Several support rods (51) are set on the cover plate (5) in parallel to the axial direction of the first protective cover (41). The bridge crane can lift the cover plate (5) and drive the support rods (51) into / out of the second heat insulation chamber. Several bases (52) are mounted on the support rod (51); A storage slot (521) is provided on the base (52) for placing workpieces (53).

3. The graphitization furnace with a multi-chamber heat-insulating structure according to claim 1, characterized in that, It also includes a rubber strip (43), which is embedded in the end of the second protective cover (42) away from the worktable (2) for the cover plate (5) to press against.

4. The graphitization furnace with a multi-chamber heat-insulating structure according to claim 1, characterized in that, The loop component includes: The feed pipe (61) and the discharge pipe (62) are respectively connected to the heat exchange fitting (3); A water pump (63) is connected to a feed pipe (61) at its outlet, and is used to deliver heat exchange medium into the heat exchange pipe fitting (3).

5. The graphitization furnace with a multi-chamber heat-insulating structure according to claim 1, characterized in that, The air supply assembly includes an air inlet pipe (71), an air outlet pipe (72), a valve (73), and an air pump (74). One end of the air inlet pipe (71) is connected to the second heat insulation chamber, and the other end of the air inlet pipe (71) is connected to the air outlet of the air pump (74). One end of the air outlet pipe (72) is connected to the second heat insulation chamber, and the other end of the air outlet pipe (72) is connected to the atmosphere. The valve (73) is installed on the air outlet pipe (72).

6. The graphitization furnace with a multi-chamber heat-insulating structure according to claim 1, characterized in that, Also includes: The lifting ring (54) is set on the cover plate (5).

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