High-temperature pyrolysis gas discharging mechanism

Abstract

The utility model belongs to the technical field of waste lithium battery pyrolyzing furnaces, and particularly discloses a high-temperature pyrolysis gas discharging mechanism which comprises a connecting pipe, a material lifting conical hopper and a gas collecting hood, the connecting pipe is sleeved with an annular gas collecting hood, an annular groove is formed in the inner wall of the gas collecting hood, and a gas collecting cavity is defined by the groove and the outer wall of the connecting pipe; an exhaust pipe is arranged on the gas collecting hood and is communicated with the gas collecting cavity; a plurality of air holes are formed in the pipe wall of the connecting pipe and are connected into through holes; the material lifting conical hopper is arranged in the connecting pipe, and a connecting flange is welded to the large end of the material lifting conical hopper and fixedly installed at one end of the connecting pipe; in the axis direction of the connecting pipe, the air holes are all located between the two ends of the material lifting conical hopper. The device is simple in structure, and is arranged between a high-temperature furnace and a cooling furnace when being used, so that gas stays in the high-temperature furnace for a long time and is fully pyrolyzed, the temperature of the gas is increased, tar is prevented from being generated, and the consumption of natural gas of a waste gas treatment system is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste lithium battery pyrolysis furnaces, and in particular relates to a high-temperature pyrolysis gas emission mechanism. Background Art

[0002] At present, the gas discharge port of the rotary pyrolysis furnace of waste lithium batteries is set at the furnace head position of the high-temperature furnace. With such a gas discharge structure, since the gas discharge port is set at the furnace head position, the temperature at the furnace head position is lowered, and the electrolyte at the furnace head position cannot be fully pyrolyzed. Moreover, the gas in the pyrolysis furnace is close to the gas discharge port and is directly discharged from the gas discharge port, which further lowers the temperature of the gas, and the temperature of the gas entering the exhaust gas treatment system does not meet the designed standard. The gas that is not fully pyrolyzed condenses in the pipeline of the exhaust gas treatment system to form tar and absorbs dust, which can easily cause the pipeline of the exhaust gas treatment system to be blocked, making it difficult to clean and seriously affecting production efficiency. When the gas with a lower temperature enters the exhaust gas treatment system, it will increase the consumption of natural gas and increase production costs. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a high-temperature pyrolysis gas emission mechanism with a simple structure, which allows the electrolyte to enter the exhaust gas system after being fully pyrolyzed, and can improve production efficiency.

[0004] The technical solution adopted by the utility model is: a high-temperature pyrolysis gas discharge mechanism, including a connecting pipe, a material copying cone bucket and a gas collecting hood; the connecting pipe is sleeved with a gas collecting hood, the gas collecting hood is annular, an annular groove is arranged on the inner wall of the gas collecting hood, and the groove and the outer wall of the connecting pipe form a gas collecting cavity; the gas collecting hood is provided with an exhaust pipe, and the exhaust pipe is connected to the gas collecting cavity; a plurality of air holes are arranged on the wall of the connecting pipe, and the air holes are through holes;

[0005] The material copying cone bucket is placed in the connecting pipe, a connecting flange is welded on the large end of the material copying cone bucket, and the connecting flange is fixedly installed on one end of the connecting pipe; in the axial direction of the connecting pipe, multiple air holes are located between the two ends of the material copying cone bucket; the air collecting cavity is connected to the gap between the connecting pipe and the material copying cone bucket through the air holes.

[0006] Furthermore, center lines of the multiple air holes on the connecting pipe are located in the same cross section perpendicular to the axis of the connecting pipe.

[0007] Furthermore, the exhaust pipe is arranged at the top of the air collecting hood, and an ash discharge pipe is arranged at the bottom of the air collecting hood, and the ash discharge pipe is connected to the air collecting cavity.

[0008] Furthermore, the connecting flange is an annular plate structure, and a plurality of bolt holes are provided on the connecting flange, and the plurality of bolt holes are evenly arranged along the circumferential direction.

[0009] Furthermore, the material-scraping cone bucket includes a cone bucket and a material-scraping spiral blade; the material-scraping spiral blade is coaxially fixed on the inner wall of the cone bucket, and the large end of the cone bucket is welded in the center hole of the connecting flange; the cone bucket is coaxial with the connecting flange and coaxial with the connecting pipe.

[0010] Further, the air collecting hood comprises an upper hood and a lower hood, the upper hood comprises a semi-circular hood plate I, a semi-circular sealing plate I and a semi-circular sealing plate II; the outer circles of the sealing plates I and II are welded to the inner wall of the hood plate I, and the two ends of the sealing plate I in the circumferential direction, the two ends of the sealing plate II in the circumferential direction and the two ends of the hood plate I in the circumferential direction are located in the same plane; an air outlet is provided on the top of the hood plate I, and the air outlet is located between the sealing plate I and the sealing plate II; the air outlet is connected to the exhaust pipe;

[0011] The lower cover includes a semi-circular cover plate II, a semi-circular sealing plate III and a semi-circular sealing plate IV; the outer circles of the sealing plates III and IV are welded to the inner wall of the cover plate II, and the two ends of the sealing plate III, the two ends of the sealing plate IV and the two ends of the cover plate II are located in the same plane; the bottom of the cover plate II is provided with an ash discharge hole, which is located between the sealing plates III and IV; the ash discharge hole is connected to the ash discharge pipe;

[0012] The upper cover and the lower cover are connected to form an annular structure, the sealing plate I and the sealing plate III are located in the same plane, the sealing plate II and the sealing plate IV are located in the same plane, and the sealing plates I, II, III, IV, the cover plate I and the cover plate II form an annular groove.

[0013] Furthermore, after the upper cover and the lower cover are connected, the sealing plate I and the sealing plate III constitute an annular sealing plate I, and a rubber sealing strip I is fixedly provided on both side walls of the annular sealing plate I. The sealing plate II and the sealing plate IV constitute an annular sealing plate II, and a rubber sealing strip II is fixedly provided on both side walls of the annular sealing plate II. The inner circles of the rubber sealing strips I and II are matched with the outer wall of the connecting pipe.

[0014] Furthermore, four supporting legs are provided on the outer wall of the cover plate II.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the utility model has a simple structure, and when it is used, the two ends of the connecting pipe are respectively connected to the discharge port of the high-temperature furnace and the feed port of the cooling furnace through pipelines; the high-temperature furnace is no longer provided with a gas discharge port, so that the gas can only be collected and transported to the waste gas treatment system through the utility model, and the gas formed by the electrolyte stays in the high-temperature furnace for a long time and can be fully pyrolyzed, and the gas temperature is increased, which prevents the gas from condensing in the pipeline of the waste gas treatment system to form tar, and will no longer block the pipeline, thereby improving production efficiency; and reducing the consumption of natural gas by the waste gas treatment system, thereby reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1This is an installation structure diagram of the utility model.

[0017] Figure 2 It is a structural diagram of the utility model.

[0018] Figure 3 This is a three-dimensional diagram of the utility model without the gas collecting hood.

[0019] Figure 4 This is the front view of the utility model after removing the gas collecting hood.

[0020] Figure 5 This is a cross-sectional view of the utility model without the gas collecting hood.

[0021] Figure 6 It is a front view of the gas collecting hood of the utility model.

[0022] Figure 7 It is a three-dimensional diagram of the gas collecting hood of the utility model.

[0023] In the figure: 1-high temperature furnace; 2-cooling furnace; 3-base; 4-connecting pipe; 401-air hole; 5-cone bucket for material removal, 501-cone bucket; 502-spiral blade for material removal; 6-gas collecting hood, 601-exhaust pipe; 602-ash unloading pipe; 603-groove; 61-upper cover; 611-cover plate I; 612-sealing plate I; 613-sealing plate II; 614-air outlet; 615-connecting plate I; 616-rubber sealing strip I; 62-lower cover; 621-cover plate II; 622-sealing plate III; 623-sealing plate IV; 625-connecting plate II; 626-rubber sealing strip II; 627-leg; 7-connecting flange; 8-flange; 9-connecting rib plate. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings.

[0025] like Figure 2-Figure 7 As shown, the utility model includes a connecting pipe 4, a material collecting cone 5 and an air collecting hood 6; the connecting pipe 4 is provided with an air collecting hood 6. The air collecting hood 6 includes an upper hood 61 and a lower hood 62, the upper hood includes a semi-circular cover plate I611, a semi-circular sealing plate I612 and a semi-circular sealing plate II613; the outer circles of the sealing plates I612 and II613 are welded to the inner wall of the cover plate I611, and the two ends of the sealing plate I612 in the circumferential direction, the two ends of the sealing plate II613 in the circumferential direction and the two ends of the cover plate I611 in the circumferential direction are located in the same plane. An air outlet 614 is provided at the top of the cover plate I611, and the air outlet 614 is located between the sealing plate I612 and the sealing plate II613; the air outlet 614 is connected to the exhaust pipe 601.

[0026] The lower cover 62 includes a semi-circular cover plate II 621, a semi-circular sealing plate III 622 and a semi-circular sealing plate IV 623; the outer circles of the sealing plates III 622 and IV 623 are welded to the inner wall of the cover plate II 621, and the two ends of the sealing plate III 622, the two ends of the sealing plate IV 623 and the two ends of the cover plate II 621 are located in the same plane. The bottom of the cover plate II 621 is provided with an ash discharge hole, which is located between the sealing plate III 622 and the sealing plate IV 623. The ash discharge hole is connected to the ash discharge pipe 602.

[0027] Connecting plates I615 are welded to the outer walls at both ends of the circumference of the cover plate I611, and the bottom surface of the connecting plate I615 is coplanar with the two ends of the circumference of the cover plate I611. Connecting plates II625 are welded to the outer walls at both ends of the circumference of the cover plate II621, and the top surface of the connecting plate II625 is coplanar with the two ends of the circumference of the cover plate II621. Multiple bolt holes are provided on the connecting plates I615 and II625, and the connecting plates I615 and the corresponding connecting plates II625 are connected by bolts to form a gas collecting hood 6 with an annular structure.

[0028] Sealing plate I612 and sealing plate III622 are located in the same plane, sealing plate II613 and sealing plate IV623 are located in the same plane, and sealing plate I612, sealing plate II613, sealing plate III622, sealing plate IV623, cover plate I611 and cover plate II621 form an annular groove 603. The groove 603 and the outer wall of the connecting pipe 4 form a gas collecting cavity; the pipe wall of the connecting pipe 4 is provided with a plurality of air holes 401, the air holes 401 are through holes, and the center lines of the plurality of air holes 401 are located in the same cross section perpendicular to the axis of the connecting pipe 4. Four legs 627 are provided on the outer wall of the cover plate II621, and the legs 627 are perpendicular to the connecting plate II625, such as Figure 1 As shown, four legs 627 are used to be mounted on the base 3 of the pyrolysis furnace.

[0029] After the upper cover 61 and the lower cover 62 are connected, the sealing plate I612 and the sealing plate III622 form an annular sealing plate I, and a rubber sealing strip I616 is fixed on both side walls of the annular sealing plate I. The sealing plate II613 and the sealing plate IV623 form an annular sealing plate II, and a rubber sealing strip II626 is fixed on both side walls of the annular sealing plate II. The inner circles of the rubber sealing strips I616 and II626 are matched with the outer wall of the connecting pipe 4. The gas in the gas collecting cavity is prevented from leaking from the gap between the gas collecting cover 6 and the connecting pipe 4.

[0030] The material-scraping cone bucket 5 comprises a cone bucket 501 and a material-scraping spiral blade 502; the material-scraping spiral blade 502 is coaxially fixedly mounted on the inner wall of the cone bucket 501. The material-scraping cone bucket 5 is placed in the connecting pipe, the large end of the material-scraping cone bucket 5 is welded in the inner hole of the connecting flange 7, the connecting flange 7 is fixedly mounted on one end of the connecting pipe 4, the other end of the connecting pipe 4 is welded with a flange 8, and the connecting flange 7 and the flange 8 are coaxial with the connecting pipe 4. The air collecting cavity communicates with the gap between the connecting pipe 4 and the cone bucket 501 through the air hole 401. The cone bucket 501 is coaxial with the connecting flange 7; the small end side of the cone bucket 501 is connected to the inner wall of the connecting pipe 4 through a plurality of connecting ribs 9, and the plurality of connecting ribs 9 are evenly arranged in the circumferential direction. The connecting flange 7 is an annular plate structure, and a plurality of bolt holes are arranged on the connecting flange 7, and the plurality of bolt holes are evenly arranged in the circumferential direction. In the axial direction of the connecting pipe 4, the plurality of air holes 401 are located between the two ends of the material copying cone 5; this structure prevents solid materials from leaking into the gas collecting chamber from the air holes 401 when the materials pass through the utility model, and also prevents solid materials from blocking the air holes 401 and preventing exhaust.

[0031] The working principle of the utility model is as follows:

[0032] When the utility model is used, the two ends of the connecting pipe 4 of the utility model are respectively connected to the discharge port of the high temperature furnace 1 and the feed port of the cooling furnace 2 through pipelines; the small end of the material copying cone hopper 5 faces the cooling furnace 2. The gas collecting hood 6 is installed on the base 3 through four legs 627. The base 3 is installed on the foundation, and the angle between the base 3 and the horizontal plane is 2°, and the high temperature furnace 1 is higher than the cooling furnace 2.

[0033] After the lithium battery crushed material enters the high temperature furnace 1, it slowly moves from the head to the tail of the high temperature furnace 1, and the gas generated by the high temperature also flows from the head to the tail of the high temperature furnace 1, and is discharged into the exhaust gas treatment system through the material copying cone 5, the gap between the cone 501 and the connecting pipe 4, the air hole 401, the groove 603, and the exhaust pipe 601 in sequence. Since a rubber sealing strip I616 is fixed on the two side walls of the annular sealing plate I, and a rubber sealing strip II626 is fixed on the two side walls of the annular sealing plate II, it can effectively prevent the gas from leaking out from the gap between the gas collecting hood 6 and the connecting pipe 4. The gas formed by the electrolyte stays in the high temperature furnace 1 for a long time and can be fully pyrolyzed. The crushed material enters the cooling furnace 2 through the material copying cone 5. The material copying spiral blade 502 of the material copying cone 5 is responsible for lifting the lithium battery crushed material and entering the cooling furnace 2. The lithium battery crushed material is cooled through the cooling furnace 2 and enters the next process.

Claims

1. A high-temperature pyrolysis gas discharge mechanism, characterized by: It comprises a connecting pipe, a material copying cone bucket and an air collecting hood; the connecting pipe is provided with an air collecting hood, the air collecting hood is annular, an annular groove is provided on the inner wall of the air collecting hood, and the groove and the outer wall of the connecting pipe form an air collecting cavity; the air collecting hood is provided with an exhaust pipe, and the exhaust pipe is connected to the air collecting cavity; a plurality of air holes are provided on the wall of the connecting pipe, and the air holes are through holes; The material copying cone bucket is placed in the connecting pipe, a connecting flange is welded on the large end of the material copying cone bucket, and the connecting flange is fixedly installed on one end of the connecting pipe; in the axial direction of the connecting pipe, multiple air holes are located between the two ends of the material copying cone bucket; the air collecting cavity is connected to the gap between the connecting pipe and the material copying cone bucket through the air holes.

2. The high-temperature pyrolysis gas discharge mechanism according to claim 1 is characterized in that: The center lines of the multiple air holes on the connecting pipe are located in the same cross section which is perpendicular to the axis of the connecting pipe.

3. The high-temperature pyrolysis gas discharge mechanism according to claim 1, characterized in that: The exhaust pipe is arranged on the top of the air collecting hood, and an ash discharge pipe is arranged at the bottom of the air collecting hood, and the ash discharge pipe is connected to the air collecting cavity.

4. The high-temperature pyrolysis gas discharge mechanism according to claim 1 is characterized in that: The connecting flange is an annular plate structure, and a plurality of bolt holes are arranged on the connecting flange, and the plurality of bolt holes are evenly arranged along the circumferential direction.

5. The high-temperature pyrolysis gas discharge mechanism according to claim 1 is characterized in that: The material-scraping cone bucket comprises a cone bucket and a material-scraping spiral blade; the material-scraping spiral blade is coaxially fixedly installed on the inner wall of the cone bucket, and the large end of the cone bucket is welded in the central hole of the connecting flange; the cone bucket is coaxial with the connecting flange and the connecting pipe.

6. The high-temperature pyrolysis gas discharge mechanism according to claim 3, characterized in that: The gas collecting hood comprises an upper hood and a lower hood, the upper hood comprises a semi-circular hood plate I, a semi-circular sealing plate I and a semi-circular sealing plate II; the outer circles of the sealing plates I and II are welded to the inner wall of the hood plate I, and the two ends of the sealing plate I in the circumferential direction, the two ends of the sealing plate II in the circumferential direction and the two ends of the hood plate I in the circumferential direction are located in the same plane; an air outlet is provided at the top of the hood plate I, and the air outlet is located between the sealing plate I and the sealing plate II; the air outlet is connected to the exhaust pipe; The lower cover includes a semi-circular cover plate II, a semi-circular sealing plate III and a semi-circular sealing plate IV; the outer circles of the sealing plates III and IV are welded to the inner wall of the cover plate II, and the two ends of the sealing plate III, the two ends of the sealing plate IV and the two ends of the cover plate II are located in the same plane; the bottom of the cover plate II is provided with an ash discharge hole, which is located between the sealing plates III and IV; the ash discharge hole is connected to the ash discharge pipe; The upper cover and the lower cover are connected to form an annular structure, the sealing plate I and the sealing plate III are located in the same plane, the sealing plate II and the sealing plate IV are located in the same plane, and the sealing plates I, II, III, IV, the cover plate I and the cover plate II form an annular groove.

7. The high-temperature pyrolysis gas discharge mechanism according to claim 6, characterized in that: After the upper cover and the lower cover are connected, the sealing plate I and the sealing plate III constitute an annular sealing plate I, and a rubber sealing strip I is fixedly provided on both side walls of the annular sealing plate I. The sealing plate II and the sealing plate IV constitute an annular sealing plate II, and a rubber sealing strip II is fixedly provided on both side walls of the annular sealing plate II. The inner circles of the rubber sealing strips I and II are matched with the outer wall of the connecting pipe.

8. The high-temperature pyrolysis gas discharge mechanism according to claim 7, characterized in that: Four supporting legs are arranged on the outer wall of the cover plate II.

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