Furnace wall structure of graphitization furnace with uniformly distributed heat dissipation channels

Abstract

The utility model discloses a graphitization furnace wall structure with uniformly distributed heat dissipation channels, which comprises a furnace wall body, the furnace wall body is a rectangular column wall body, and a plurality of heat dissipation channels are arranged on the furnace wall body along the length direction of the furnace wall body; the multiple heat dissipation channels are arranged at equal intervals, an air inlet groove is formed in the bottom end of the furnace wall body, the length direction of the air inlet groove is consistent with that of the furnace wall body, the two ends of the air inlet groove penetrate through the two end walls of the furnace wall body in the length direction respectively, and the middle of the air inlet groove is communicated with the bottom ends of the multiple heat dissipation channels. When the furnace wall body structure is produced, the positions of the exhaust channels do not need to avoid the position of the base any more, a plurality of exhaust channels can be evenly arranged on the furnace wall body, the uniformity of the whole furnace wall structure is improved, and therefore the structural strength of the furnace wall is enhanced, and the service life of the furnace wall is prolonged. And the service lives of the furnace wall and the graphitization furnace are effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the field of graphitization furnaces, in particular to a graphitization furnace wall structure with evenly distributed heat dissipation channels. Background Art

[0002] The graphitization furnace is mainly used for high-temperature graphitization treatment of electrodes and battery negative electrode materials. Its prototype is a long furnace body constructed of refractory materials, with carbon blanks or granular materials loaded to form a conductive furnace core. Conductive electrode rods are arranged on the furnace walls at both ends of the furnace core and connected to the power supply to form an energized circuit. When the circuit is connected, the furnace core heats up due to the effect of resistance, so that the carbon blank is transformed into artificial graphite at a temperature of 2800~3200℃ through high-temperature heat treatment. The temperature in the graphitization furnace is generally between 2200~3200℃. Before 1000℃, if the high-temperature volatiles of the graphitized material cannot overflow smoothly and accumulate in the furnace, the pressure in the furnace will increase, and it will be forcibly ejected after the furnace temperature continues to rise.

[0003] Patent No. ZL202321691400.2 discloses a combined retaining wall structure for a graphitization furnace, in which an exhaust channel that penetrates the structure longitudinally is arranged on the retaining wall to exhaust the high-temperature flue gas inside the graphitization furnace. However, the bottom end of the retaining wall is supported by a plurality of bases. When designing the exhaust channel of the retaining wall, it is necessary to avoid the placement position of the base to prevent the base from blocking the bottom of the exhaust channel, resulting in poor ventilation of the exhaust channel and reduced heat dissipation effect. At the same time, since the exhaust channel needs to avoid the placement position of the base, the plurality of exhaust channels on the retaining wall cannot be evenly arranged, which will affect the symmetry of the retaining wall structure and uneven force, thereby reducing the structural strength of the retaining wall and shortening the service life of the retaining wall. It is necessary to improve it. Summary of the invention

[0004] The utility model aims to solve the above problems and provide a graphitization furnace wall structure with high structural strength, good heat dissipation effect and uniformly distributed heat dissipation channels.

[0005] In order to achieve the above purpose, the technical solution of the utility model is:

[0006] A graphitization furnace wall structure with evenly distributed heat dissipation channels comprises a furnace wall body, which is a rectangular column wall body. A plurality of heat dissipation channels are arranged on the furnace wall body along the length direction of the furnace wall body, and the length direction of the heat dissipation channels is consistent with the height direction of the furnace wall body; the plurality of heat dissipation channels are arranged at equal intervals, an air inlet groove is arranged at the bottom end of the furnace wall body, and the length direction of the air inlet groove is consistent with the length direction of the furnace wall body, the two ends of the air inlet groove respectively penetrate the two end walls of the furnace wall body in the length direction, and the middle part of the air inlet groove is connected with the bottom ends of the plurality of heat dissipation channels.

[0007] Furthermore, the longitudinal vertical section of the air inlet groove is arranged in an inverted U-shape with a flared bottom end, and the inner diameter of the top end of the air inlet groove is not less than the inner diameter of the heat dissipation channel in the width direction of the furnace wall body.

[0008] Furthermore, the heat dissipation channel is in the shape of a rectangular column, the bottom end of the heat dissipation channel passes through the bottom end wall of the furnace wall body, the top side of the heat dissipation channel is open and passes through the end wall of one side of the furnace wall body close to the inside of the graphitization furnace through the opening, and the edge corners of the heat dissipation channel are all arc chamfered structures.

[0009] Furthermore, furnace columns are provided at both ends of the length direction of the furnace wall body, and mounting protrusions are provided on both sides of the furnace columns; mounting grooves are provided at both ends of the length direction of the furnace wall body and are engaged and connected with the mounting protrusions on adjacent furnace columns through the mounting grooves; the length direction of the mounting groove is consistent with the height direction of the furnace wall body, and the upper and lower ends of the mounting groove respectively penetrate the upper and lower end walls of the furnace wall body; the bottom end of the mounting groove is connected to the air inlet groove arranged at the bottom end of the furnace wall body.

[0010] Furthermore, a plurality of first air holes are arranged between the heat dissipation channel on one side of the furnace wall body close to the installation groove and the installation groove, and the plurality of first air holes are arranged along the height direction of the furnace wall body and the two ends of the first air holes are respectively connected with the heat dissipation channel and the installation groove; the first air holes are arranged corresponding to the second air holes arranged on both sides of the furnace column, one end of the second air hole passes through one end wall of the installation protrusion, and the other end of the second air hole is connected with the hollow channel arranged inside the furnace column.

[0011] Furthermore, a plurality of smoke outlet grooves are arranged on the end wall of one side of the furnace wall body close to the inside of the graphitization furnace, and the plurality of smoke outlet grooves are arranged at equal intervals along the length direction of the furnace wall body. The length direction of the smoke outlet grooves is consistent with the height direction of the furnace wall body, and the upper and lower ends of the smoke outlet grooves respectively penetrate the upper and lower end walls of the furnace wall body.

[0012] Furthermore, a connecting hole is provided in the heat dissipation channel, and the connecting hole is arranged in an inclined shape. The higher end of the connecting hole is connected to the inside of the heat dissipation channel, and the lower end of the connecting hole is connected to the smoke outlet groove located outside the heat dissipation channel.

[0013] Furthermore, there are a plurality of communicating holes, which are arranged in sequence along the length direction of the smoke outlet groove.

[0014] Compared with the prior art, the utility model has the following advantages and positive effects:

[0015] The utility model adopts a design of arranging an air inlet groove at the bottom end of the furnace wall body, so that when the graphitization furnace is working, the base cannot completely block the air inlet groove at the bottom end of the furnace wall body, and the wind can enter into each heat dissipation channel through the air inlet groove. The base will not have any influence on the heat dissipation effect of the heat dissipation channel in the furnace wall body, thereby avoiding the situation that the heat dissipation channel is not ventilated well and the heat dissipation effect is poor due to the base blocking the heat dissipation channel; at the same time, when the furnace wall body structure is produced, the position of the exhaust channel no longer needs to avoid the position of the base, and a plurality of exhaust channels can be evenly arranged on the furnace wall body, thereby improving the uniformity of the overall structure of the furnace wall, thereby enhancing the structural strength of the furnace wall, and effectively extending the service life of the furnace wall and the graphitization furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 This is a top view of the overall structure of the graphitization furnace;

[0018] Figure 2 It is a top view of the connection structure between the furnace wall body and the furnace column;

[0019] Figure 3 for Figure 2 AA cross-sectional structure diagram;

[0020] Figure 4 This is the main structural diagram of the furnace wall body;

[0021] Figure 5 for Figure 4 BB cross-sectional structure diagram;

[0022] Figure 6 This is a top view of the furnace wall body;

[0023] Figure 7 for Figure 6 CC cross-sectional structure diagram;

[0024] Figure 8 This is an overhead structural diagram of the furnace wall body. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work, any modifications, equivalent replacements, improvements, etc., should be included in the protection scope of the utility model.

[0026] like Figure 1 As shown, the present embodiment discloses a graphitization furnace body structure, which is composed of a furnace column 2, a furnace wall body 1, a base 3, a bottom plate 4, and a furnace head 5. The furnace column 2 is placed on the ground, and the furnace wall body 1 and the furnace column 2 are intermittently arranged and the furnace wall body 1 is clamped on both sides of the furnace column 2 to form a graphitization furnace wall. The bottom end of the furnace wall body 1 is supported by a plurality of transversely arranged bases 3; a bottom plate 4 is arranged between two groups of symmetrically arranged graphitization furnace walls, and the bottom plate 4 is also supported by the base 3, and furnace heads 5 are arranged on both sides of the bottom plate 4; in the existing structure, a heat dissipation channel is arranged on the furnace wall body in the height direction, but the bottom end of the heat dissipation channel needs to avoid being blocked by the base, resulting in uneven distribution of the heat dissipation channel and weak structural strength of the furnace wall body; based on this, the utility model proposes a graphitization furnace wall structure with uniformly distributed heat dissipation channels;

[0027] like Figures 2 to 8 As shown, the present embodiment discloses a furnace wall structure of a graphitization furnace with uniformly distributed heat dissipation channels, including a furnace wall body 1, the furnace wall body 1 is a rectangular column wall, and a plurality of heat dissipation channels 11 are arranged on the furnace wall body 1 along the length direction of the furnace wall body 1; the heat dissipation channel 11 is a top side outlet structure, which is in a rectangular column shape, and the bottom end of the heat dissipation channel 11 passes through the bottom end wall of the furnace wall body 1, and the top side of the heat dissipation channel 11 is opened and passes through the end wall of the furnace wall body 1 close to the inside of the graphitization furnace through the opening, and the edge corners of the heat dissipation channel 11 are all arc chamfered structures to avoid cracking at the edge corners of the heat dissipation channel 11;

[0028] The plurality of heat dissipation channels 11 are arranged at equal intervals, and an air inlet groove 17 is arranged at the bottom end of the furnace wall body 1. The length direction of the air inlet groove 17 is consistent with the length direction of the furnace wall body 1, and the two ends of the air inlet groove 17 respectively penetrate the end walls of the furnace wall body 1 in the length direction, and the middle part of the air inlet groove 17 is connected with the bottom ends of the plurality of heat dissipation channels 11.

[0029] The longitudinal vertical section of the air inlet groove 17 is arranged in an inverted U-shape with a flared bottom end (i.e., in the width direction of the air inlet groove, the inner diameter of the bottom end of the air inlet groove is larger than the inner diameter of the top end of the air inlet groove), and the inner diameter of the top end of the air inlet groove 17 is not less than the inner diameter of the bottom end of the heat dissipation channel 11 in the width direction of the furnace wall body 1. The bottom end of the air inlet groove is arranged in a flared structure, so that air can enter the air inlet groove from the bottom end of the air inlet groove and enter the heat dissipation channel through the air inlet groove.

[0030] The furnace columns 2 are arranged at both ends of the furnace wall body 1 in the length direction, and mounting protrusions 21 are arranged on both sides of the furnace columns 2; mounting grooves 12 are arranged at both ends of the furnace wall body 1 in the length direction, and the cross-section of the mounting groove 12 is U-shaped with an end flared (that is, in the width direction of the mounting groove, the inner diameter of the end of the mounting groove close to the end face of the furnace wall body is larger than the inner diameter of the end of the mounting groove away from the end face of the furnace wall body), so as to facilitate the interlocking connection with the mounting protrusion 21; the furnace wall body 1 is interlocked with the mounting protrusion 21 on the adjacent furnace column 2 through the mounting groove 12; the length direction of the mounting groove 12 is consistent with the height direction of the furnace wall body 1, and the upper and lower ends of the mounting groove 12 respectively penetrate the upper and lower end walls of the furnace wall body 1; the bottom end of the mounting groove 12 is connected to the air inlet groove 17 arranged at the bottom end of the furnace wall body 1.

[0031] The structural design of the mounting groove is mainly to realize the connection between the furnace wall body and the mounting protrusion on the furnace column. In actual production operations, when the furnace wall body is connected to adjacent furnace columns or adjacent furnace wall bodies, a protrusion structure can be set at one end of the length direction of the furnace wall body, and the other component connected to the furnace wall body can be set with a corresponding groove structure for connection, which can also achieve the combined installation effect of the graphitization furnace wall.

[0032] A plurality of first vent holes 13 are arranged between the heat dissipation channel 11 on the furnace wall body 1 near the mounting groove 12 and the mounting groove 12. The plurality of first vent holes 13 are arranged along the height direction of the furnace wall body 1 and the two ends of the first vent holes 13 are respectively connected with the heat dissipation channel 11 and the mounting groove 12; the first vent holes 13 are arranged corresponding to the second vent holes 23 arranged on both sides of the furnace column 2, one end of the second vent hole 23 passes through one end wall of the mounting protrusion 21, and the other end of the second vent hole 23 is connected with the hollow channel 22 arranged inside the furnace column 2, and the upper and lower ends of the hollow channel of the furnace column are respectively provided with an air outlet and an air inlet to realize the airflow circulation in the hollow channel inside the furnace column, thereby improving the high-temperature flue gas discharge effect of the graphitization furnace.

[0033] The design of the first vent hole and the second vent hole can connect the hollow channel in the furnace column with the heat dissipation channel in the adjacent furnace wall body, so that the exhaust structures of the entire graphitization furnace wall are interconnected, and the high-temperature flue gas inside the graphitization furnace is discharged through the exhaust structures that are interconnected, which effectively improves the fluidity of the exhaust gas flow, thereby increasing the exhaust rate of the flue gas inside the graphitization furnace, and further improving the use effect of the utility model.

[0034] A plurality of smoke outlet grooves 14 are arranged on the outer wall of one side of the furnace wall body 1 close to the inside of the graphitization furnace. The plurality of smoke outlet grooves 14 are arranged at equal intervals along the length direction of the furnace wall body 1. The length direction of the smoke outlet grooves 14 is consistent with the height direction of the furnace wall body 1. The upper and lower ends of the smoke outlet grooves 14 respectively penetrate the upper and lower end walls of the furnace wall body 1.

[0035] A plurality of connecting holes 16 are provided in the heat dissipation channel 11. The plurality of connecting holes 16 are arranged in sequence along the length direction of the smoke outlet groove 14. The connecting holes 16 are arranged in an inclined shape. The higher end of the connecting hole 16 is connected to the inside of the heat dissipation channel 11, and the lower end of the connecting hole 16 is connected to the smoke outlet groove 14 located outside the heat dissipation channel 11.

[0036] When the furnace wall body is the middle partition wall of the graphitization furnace, the side walls on both sides of the width direction of the furnace wall body are close to the inside of the graphitization furnace, and the side walls on both sides are provided with flue gas outlet grooves and connecting holes. When the furnace wall body is the side wall of the graphitization furnace, it is only necessary to provide the flue gas outlet grooves and connecting holes on the side of the furnace wall body close to the inside of the graphitization furnace.

[0037] During production operations, the carbon particles will contact the side walls of the furnace wall body. Since the inner diameter of the flue gas outlet groove is smaller than the particle size of the carbon particles, the carbon particles will not enter the flue gas outlet groove, so that the flue gas outlet groove forms a high-temperature flue gas discharge channel, so that the high-temperature flue gas generated by the carbon particles in the graphitization furnace is discharged from the top of the flue gas outlet groove; at the same time, the design of the connecting hole makes it possible for negative pressure to be generated in the heat dissipation channel when gas enters the bottom of the heat dissipation channel, and the connecting hole is evacuated under the action of the negative pressure, and finally the high-temperature flue gas inside the graphitization furnace is discharged from the top of the heat dissipation channel, thereby further improving the heat dissipation effect of the graphitization furnace.

[0038] The furnace wall body 1 is provided with hoisting holes 15 for convenient hoisting. There are two hoisting holes 15 and the two hoisting holes 15 are symmetrically arranged to facilitate the hanging installation operation of the furnace wall body 1.

[0039] The utility model adopts a design of arranging an air inlet groove at the bottom end of the furnace wall body, so that when the graphitization furnace is working, the base cannot completely block the air inlet groove at the bottom end of the furnace wall body, and the wind can enter into each heat dissipation channel through the air inlet groove. The base will not have any influence on the heat dissipation effect of the heat dissipation channel in the furnace wall body, thereby avoiding the situation that the heat dissipation channel is not ventilated well and the heat dissipation effect is poor due to the base blocking the heat dissipation channel; at the same time, when the furnace wall body structure is produced, the position of the exhaust channel no longer needs to avoid the position of the base, and a plurality of exhaust channels can be evenly arranged on the furnace wall body, thereby improving the uniformity of the overall structure of the furnace wall, thereby enhancing the structural strength of the furnace wall, and effectively extending the service life of the furnace wall and the graphitization furnace.

Claims

1. A graphitization furnace wall structure with uniformly distributed heat dissipation channels, comprising a furnace wall body, the furnace wall body being a rectangular column wall body, a plurality of heat dissipation channels being arranged on the furnace wall body along the length direction of the furnace wall body, the length direction of the heat dissipation channels being consistent with the height direction of the furnace wall body; characterized in that: The several heat dissipation channels are arranged at equal intervals, and an air inlet groove is arranged at the bottom end of the furnace wall body. The length direction of the air inlet groove is consistent with the length direction of the furnace wall body, and the two ends of the air inlet groove respectively penetrate the end walls of the furnace wall body in the length direction, and the middle part of the air inlet groove is connected with the bottom ends of the several heat dissipation channels.

2. The graphitization furnace wall structure with uniformly distributed heat dissipation channels according to claim 1, characterized in that: The longitudinal vertical section of the air inlet groove is arranged in an inverted U-shape with a flared bottom end, and the inner diameter of the top end of the air inlet groove is not less than the inner diameter of the heat dissipation channel in the width direction of the furnace wall body.

3. The graphitization furnace wall structure with uniformly distributed heat dissipation channels according to claim 2, characterized in that: The heat dissipation channel is in the shape of a rectangular column, the bottom end of the heat dissipation channel passes through the bottom end wall of the furnace wall body, the top side of the heat dissipation channel is open and passes through the end wall of the furnace wall body close to the inside of the graphitization furnace through the opening, and the edge corners of the heat dissipation channel are all arc chamfered structures.

4. The graphitization furnace wall structure with uniformly distributed heat dissipation channels according to claim 3, characterized in that: Furnace columns are arranged at both ends of the length direction of the furnace wall body, and installation protrusions are arranged on both sides of the furnace columns; installation grooves are arranged at both ends of the length direction of the furnace wall body and are engaged and connected with the installation protrusions on adjacent furnace columns through the installation grooves; the length direction of the installation groove is consistent with the height direction of the furnace wall body, and the upper and lower ends of the installation groove respectively penetrate the upper and lower end walls of the furnace wall body; the bottom end of the installation groove is connected with the air inlet groove arranged at the bottom end of the furnace wall body.

5. The graphitization furnace wall structure with uniformly distributed heat dissipation channels according to claim 4, characterized in that: A plurality of first air holes are arranged between the heat dissipation channel on the furnace wall body close to the installation groove and the installation groove, and the plurality of first air holes are arranged along the height direction of the furnace wall body, and the two ends of the first air holes are respectively connected with the heat dissipation channel and the installation groove; the first air holes are arranged corresponding to the second air holes arranged on both sides of the furnace column, one end of the second air hole passes through one end wall of the installation protrusion, and the other end of the second air hole is connected with the hollow channel arranged inside the furnace column.

6. The graphitization furnace wall structure with uniformly distributed heat dissipation channels according to claim 5, characterized in that: A plurality of smoke outlet grooves are arranged on the end wall of one side of the furnace wall body close to the inside of the graphitization furnace. The plurality of smoke outlet grooves are arranged at equal intervals along the length direction of the furnace wall body. The length direction of the smoke outlet grooves is consistent with the height direction of the furnace wall body. The upper and lower ends of the smoke outlet grooves respectively penetrate the upper and lower end walls of the furnace wall body.

7. The graphitization furnace wall structure with uniformly distributed heat dissipation channels according to claim 6, characterized in that: A connecting hole is arranged in the heat dissipation channel, and the connecting hole is arranged in an inclined shape. The higher end of the connecting hole is connected to the inside of the heat dissipation channel, and the lower end of the connecting hole is connected to the smoke outlet groove located outside the heat dissipation channel.

8. The graphitization furnace wall structure with uniformly distributed heat dissipation channels according to claim 7, characterized in that: There are a plurality of communicating holes, which are arranged in sequence along the length direction of the smoke outlet groove.

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