A pyrolysis gas blower for a pre-carbonization rotary kiln system of a lithium battery anode material

Abstract

The invention discloses a pyrolysis gas blower for a lithium battery negative electrode material pre-carbonization rotary kiln system. The technical solution thereof mainly comprises an inner shell, in which a blower cavity is formed; a rotating shaft, one end of which extends into the inner shell; a middle shell, in which the middle shell is coated outside the inner shell and a heating cavity is formed between the middle shell and the inner shell, a heat inlet pipe for conveying high-temperature gas to the heating cavity is connected to the outside of the middle shell, and a heat outlet pipe for conveying gas in the heating cavity is fixedly connected to the outside of the middle shell; and an outer shell, in which the outer shell is coated outside the middle shell and the inner shell, and an insulation layer is arranged on the inner side of the outer shell; by introducing high-temperature gas into the heating cavity, volatile components of tar gas entering into the blower cavity can be heated so that the temperature will not drop below 450°C, and thus the volatile components will not adhere to the pipeline, so that frequent shutdown for cleaning is not required, thereby reducing the equipment operation cost.

Description

Technical Field

[0001] The invention relates to the technical field of pyrolysis gas blowers, and more specifically, to a pyrolysis gas blower for a lithium battery negative electrode material pre-carbonization rotary kiln system. Background Art

[0002] Currently, in the pre-carbonization rotary kiln system of the lithium battery negative electrode material production line, one of the links needs to transport high-temperature tar gas volatiles and other substances. Once the temperature of this substance is lower than 450°C, it will condense and easily adhere to the flow channel, causing channel blockage. This requires frequent shutdowns for cleaning, which greatly increases the cost of equipment operation.

[0003] Therefore, a fan capable of reducing the adhesion of tar gas volatiles on a passage is provided. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a pyrolysis gas blower for a lithium battery negative electrode material pre-carbonization rotary kiln system, which can heat the volatile matter of tar gas entering the blower chamber by passing high-temperature gas into the heating chamber, so that the temperature of the tar gas will not drop below 450°C, and thus it will not adhere to the pipeline, thereby eliminating the need for frequent shutdown for cleaning and reducing the operating cost of the equipment.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: A pyrolysis gas blower for a lithium battery negative electrode material pre-carbonization rotary kiln system, comprising an inner shell, wherein a blower cavity is formed in the inner shell;

[0006] A rotating shaft, one end of which extends into the inner shell and the end of which is fixedly connected to a plurality of blades located in the fan cavity;

[0007] A middle shell, the middle shell is coated on the outside of the inner shell and a heating chamber is formed between the middle shell and the inner shell, a heat inlet pipe for conveying high-temperature gas to the heating chamber is connected to the outside of the middle shell, and a heat outlet pipe for conveying gas in the heating chamber is fixedly connected to the outside of the middle shell;

[0008] and an outer shell, wherein the outer shell is coated outside the middle shell and the inner shell, and a heat-insulating layer is arranged inside the outer shell.

[0009] The present invention is further configured such that the high-temperature gas input into the heating chamber is the high-temperature flue gas generated by the pre-carbonization rotary kiln system.

[0010] The present invention is further configured to include: a support plate, the rotating shaft is rotatably connected to the support plate, and a motor drivingly connected to the rotating shaft is arranged on the side of the support plate away from the fan chamber.

[0011] The present invention is further configured such that: the outer shell includes a fixed outer plate and a detachable outer plate, the fixed outer plate is fixedly connected to the support plate, and the detachable outer plate is detachably connected to the support plate;

[0012] The inner shell includes a fixed inner plate and a detachable inner plate. The fixed inner plate is fixedly connected to the support plate. A heat-insulating layer is filled between the fixed inner plate and the fixed outer plate. The middle shell surrounds the circumferential outer side of the inner shell and the side of the inner shell away from the support plate. The detachable inner plate is fixedly connected to the middle shell and the middle shell is detachably connected to the support plate. A heat-insulating layer is filled between the middle shell and the detachable outer plate.

[0013] The present invention is further configured such that: the heating chamber is divided into a first cavity located on the circumferential outer side of the inner shell and a second cavity located on the side of the inner shell away from the support plate. A partition plate is provided between the first cavity and the second cavity, and a plurality of through holes for communicating the first cavity and the second cavity are provided on the partition plate.

[0014] The present invention is further configured such that: it further includes a heat-insulating shell, and the heat-insulating shell is fixedly connected to the side of the support plate away from the inner shell;

[0015] And a transmission shaft. The transmission shaft is arranged between the rotating shaft and the motor. The output end of the motor is connected to a speed reducer, the output end of the speed reducer is connected to the transmission shaft. The rotating shaft and the transmission shaft are coaxially arranged. A mating hole is provided at one end of the rotating shaft close to the transmission shaft. One end of the transmission shaft close to the rotating shaft is inserted into the mating hole. A plurality of blocks are fixedly connected to the outer side of one end of the transmission shaft close to the rotating shaft, and the length directions of the plurality of blocks are parallel to the length direction of the rotating shaft. The plurality of blocks are arranged around the transmission shaft. A plurality of card slots respectively cooperating with the plurality of blocks are provided on the inner and outer sides of the mating hole.

[0016] The present invention is further configured such that: it further includes a fan. The fan is sleeved on the outer side of the rotating shaft and the fan is rotatably connected in the heat-insulating shell;

[0017] And a connecting component for connecting the rotating shaft and the fan;

[0018] The fan includes a first connecting ring sleeved on the rotating shaft;

[0019] A second connecting ring surrounding the first connecting ring. The first connecting ring and the second connecting ring are coaxially arranged with the rotating shaft, and the second connecting ring is rotatably connected to the heat-insulating shell;

[0020] And fan blades arranged between the first connecting ring and the second connecting ring, and both ends of the fan blades are fixedly connected to the first connecting ring and the second connecting ring respectively;

[0021] An adjustment hole that communicates with the mating hole and is coaxial with the rotating shaft is provided inside the rotating shaft. An adjustment rod that can slide along the length direction of the rotating shaft is provided inside the adjustment hole. The adjustment rod is fixedly connected to the transmission shaft, and the transmission shaft can slide along the length direction of the rotating shaft inside the mating hole;

[0022] A plurality of connection holes are provided inside the inner side of the first connection ring and are arranged around the adjustment hole. The connection holes penetrate the rotating shaft outward;

[0023] The connection assembly includes connecting rods. There are a plurality of connecting rods, and the plurality of connecting rods are respectively arranged inside the plurality of connection holes. The connecting rods can slide along the radial direction of the rotating shaft inside the connection holes;

[0024] And elastic members. The elastic members are provided inside the rotating shaft and each connecting rod corresponds to one elastic member. The elastic members apply elastic forces towards the adjustment rod direction to the corresponding connecting rods. The adjustment rod pushes the connecting rods to extend and retract inside the connection holes by sliding inside the adjustment hole. A plurality of connection grooves corresponding to the plurality of connecting rods are provided inside the inner side of the first connection ring. When the connecting rods extend out of the connection holes, they are inserted into the corresponding connection grooves.

[0025] The present invention is further configured as: adjustment grooves are provided at positions corresponding to the connecting rods on the adjustment rod along the length direction of the adjustment rod. One end of the connecting rod close to the adjustment rod is inserted into the adjustment groove. The side of the adjustment groove away from the support plate is arc-shaped.

[0026] The present invention is further configured as: there are two fans. The two fans are arranged along the length direction of the rotating shaft, and the two fans blow air in directions away from each other. The corresponding connection assemblies are also provided with two. The fan close to the support plate is the first fan, and the fan away from the support plate is the second fan. The first fan and the second fan divide the inside of the heat preservation housing into three chambers. From the support plate to the motor, they are the first chamber, the second chamber, and the third chamber in sequence;

[0027] A first air inlet hole is provided inside the rotating shaft at the first chamber. The first air inlet hole is coaxial with the rotating shaft. An air inlet groove is provided inside one end of the rotating shaft located inside the fan cavity. The first air inlet hole communicates with the air inlet groove. A plurality of air outlet holes that penetrate the rotating shaft outward are provided outside the air inlet groove;

[0028] A plurality of second air inlet holes that are arranged around the axis of the rotating shaft are provided inside the rotating shaft. One end of the second air inlet hole communicates with the air inlet groove, and the other end extends into the third chamber and can communicate with the third chamber;

[0029] A first control mechanism and a second control mechanism are provided on the rotating shaft. The two control mechanisms are respectively used to control the communication between the first air inlet hole and the second air inlet hole and the outside.

[0030] The present invention is further configured such that: a ventilation hole is provided at the top of the second chamber, and a switching plate that slides along the length direction of the rotating shaft is provided at the bottom of the ventilation hole. A sliding frame is provided outside the transmission shaft. The sliding frame can slide along the length direction of the rotating shaft within the heat preservation housing, and the transmission shaft is rotatably connected to the sliding frame. The sliding frame is connected to the switching plate to control the opening and closing of the ventilation hole through the sliding of the transmission shaft.

[0031] In summary, the present invention has the following beneficial effects compared with the prior art: by introducing high-temperature gas into the heating chamber, the present invention can heat the tar gas volatiles entering the fan chamber so that they will not be reduced to below 450 °C, and thus will not easily adhere to the pipeline, thereby eliminating the need for frequent shutdown cleaning and reducing the equipment operation cost. Description of the Drawings

[0032] Figure 1 A cross-sectional view showing the inner layer housing, the middle layer housing, and the outer layer housing for the embodiment;

[0033] Figure 2 A schematic diagram showing the heat preservation housing for the embodiment;

[0034] Figure 3 A cross-sectional view showing the adjusting rod for the embodiment;

[0035] Figure 4 For Figure 3 An enlarged schematic view of part A of

[0036] Figure 5 For Figure 3 An enlarged schematic view of part B of

[0037] Figure 6 For Figure 3 An enlarged schematic view of part C of

[0038] Figure 7 A cross-sectional view showing the second air inlet for the embodiment;

[0039] Figure 8 A schematic diagram showing the fan structure for the embodiment;

[0040] Figure 9 For Figure 8 An enlarged schematic view of part D of

[0041] Figure 10 A schematic diagram showing the clamping groove and the clamping block for the embodiment.

[0042] In the figure: 1. Rotating shaft; 11. Adjusting hole; 12. Adjusting rod; 121. First control part; 1211. First through hole; 122. Second control part; 1221. Second through hole; 1222. Third through hole; 123. Adjusting groove; 124. Connecting rod; 125. Elastic part; 13. First air inlet hole; 14. Air inlet groove; 141. Air outlet hole; 15. Second air inlet hole; 151. Converging groove; 152. Second communication hole; 153. Control ring; 1531. Control rod; 16. First control hole; 17. Second control hole; 171. First communication hole; 18. Connecting hole; 19. Fitting hole; 191. Card slot; 2. Blade; 3. Support plate; 41. Demountable inner layer plate; 42. Fixed inner layer plate; 43. Fan cavity; 5. Middle shell; 51. First cavity; 52. Second cavity; 53. Partition plate; 531. Connecting through hole; 61. Fixed outer layer plate; 62. Demountable outer layer plate; 63. Filling layer; 7. Heat preservation shell; 71. Ventilation hole; 711. Opening and closing plate; 72. First chamber; 73. Second chamber; 74. Third chamber; 8. Fan; 81. First connecting ring; 811. Connecting groove; 82. Second connecting ring; 83. Fan blade; 9. Transmission shaft; 91. Motor; 911. Sliding seat; 912. Support seat; 92. Sliding frame; 93. Block. Detailed implementation mode

[0043] In order to enable the personnel in this field to better understand the technical solution of the present invention, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Based on the embodiments in this application, other similar embodiments obtained by those of ordinary skill in the art without creative efforts shall all fall within the scope of protection of this application. In addition, the directional terms mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only with reference to the directions of the drawings. Therefore, the directional terms used are for illustration rather than to limit the present invention.

[0044] The present invention will be further described below in conjunction with the drawings and preferred embodiments.

[0045] Embodiment: A pyrolysis gas fan for a pre-carbonization rotary kiln system of lithium battery anode materials, see attached Figure 1 - Attached Figure 10, comprising an inner shell, a rotating shaft 1, a middle shell 5 and an outer shell, wherein a fan cavity 43 is formed in the inner shell; one end of the rotating shaft 1 extends into the inner shell and a plurality of blades 2 located in the fan cavity 43 are fixedly connected to the end of the rotating shaft 1; the middle shell 5 is coated on the outside of the inner shell and a heating cavity is formed between the middle shell 5 and the inner shell, a heat inlet pipe for conveying high-temperature gas to the heating cavity is connected to the outside of the middle shell 5, and a heat outlet pipe for conveying the gas in the heating cavity is fixedly connected to the outside of the middle shell 5; the outer shell is coated on the outside of the middle shell 5 and the inner shell, and an insulation layer is arranged on the inner side of the outer shell.

[0046] By introducing high-temperature gas into the heating chamber, the volatile matter of tar gas entering the fan chamber 43 can be heated so that its temperature does not drop below 450°C and does not adhere to the pipeline, thereby eliminating the need for frequent shutdowns for cleaning and reducing equipment operating costs.

[0047] Specifically, the high-temperature gas input into the heating chamber is the high-temperature flue gas generated by the pre-carbonization rotary kiln system. The high-temperature flue gas generated by the pre-carbonization rotary kiln system itself is used as the high-temperature gas input into the heating chamber, and no additional energy is consumed to generate the high-temperature gas.

[0048] Specifically, the present embodiment further comprises a support plate 3 , the rotating shaft 1 is rotatably connected to the support plate 3 , and a motor 91 drivingly connected to the rotating shaft 1 is disposed on a side of the support plate 3 away from the fan chamber 43 .

[0049] Specifically, the outer shell includes a fixed outer plate 61 and a removable outer plate 62, the fixed outer plate 61 is fixedly connected to the support plate 3, and the removable outer plate 62 is removably connected to the support plate 3; the inner shell includes a fixed inner plate 42 and a removable inner plate 41, the fixed inner plate 42 is fixedly connected to the support plate 3, and an insulation layer is filled between the fixed inner plate 42 and the fixed outer plate 61, the middle shell 5 surrounds the circumferential outer side of the inner shell and the side of the inner shell away from the support plate 3, the removable inner plate 41 is fixedly connected to the middle shell 5 and the middle shell 5 is removably connected to the support plate 3, and an insulation layer is filled between the middle shell 5 and the removable outer plate 62.

[0050] By dispersing the outer shell and the inner shell, it is convenient to remove the outer plate 62 and the inner plate 41 from the support plate 3, thereby facilitating the leakage of the blades 2 in the fan cavity 43 for the inspection and maintenance of the blades 2 and the shaft 1.

[0051] Specifically, the heating chamber is divided into a first cavity 51 located on the circumferential outer side of the inner layer housing and a second cavity 52 located on the side of the inner layer housing away from the support plate 3. A partition plate 53 is provided between the first cavity 51 and the second cavity 52, and a plurality of through holes 531 for communicating the first cavity 51 and the second cavity 52 are provided on the partition plate 53.

[0052] Specifically, this embodiment further includes a heat preservation housing 7 and a transmission shaft 9. The heat preservation housing 7 is fixedly connected to the side of the support plate 3 away from the inner layer housing; the transmission shaft 9 is arranged between the rotating shaft 1 and the motor 91. The output end of the motor 91 is connected to a speed reducer, and the output end of the speed reducer is connected to the transmission shaft 9. The rotating shaft 1 and the transmission shaft 9 are coaxially arranged. A mating hole 19 is provided at one end of the rotating shaft 1 close to the transmission shaft 9. One end of the transmission shaft 9 close to the rotating shaft 1 is inserted into the mating hole 19. A plurality of blocks 93 with a length direction parallel to the length direction of the rotating shaft 1 are fixedly connected to the outer side of one end of the transmission shaft 9 close to the rotating shaft 1. The plurality of blocks 93 are arranged around the transmission shaft 9, and a plurality of slots 191 respectively cooperating with the plurality of blocks 93 are provided on the inner and outer sides of the mating hole 19.

[0053] Through the arrangement of the heat preservation housing 7, the part of the rotating shaft 1 located on the side of the support plate 3 away from the fan cavity 43 and the transmission shaft 9 can be covered inside the heat preservation housing 7, reducing the heat dissipation of the rotating shaft 1 and the transmission shaft 9 to the outside world. Thus, the temperature in the fan cavity 43 is reduced from being transferred to the outside through the rotating shaft 1 and the transmission shaft 9, making it easier to maintain the temperature in the fan cavity 43 above 450 °C.

[0054] Specifically, this embodiment further includes a fan 8 and a connecting component. The fan 8 is sleeved outside the rotating shaft 1 and the fan 8 is rotatably connected inside the heat preservation housing 7; the connecting component is used to connect the rotating shaft 1 and the fan 8; the fan 8 includes a first connecting ring 81, a second connecting ring 82 and fan blades 83. The first connecting ring 81 is sleeved outside the rotating shaft 1; the second connecting ring 82 is arranged around the first connecting ring 81. The first connecting ring 81 and the second connecting ring 82 are coaxially arranged with the rotating shaft 1, and the second connecting ring 82 is rotatably connected to the heat preservation housing 7; the fan blades 83 are arranged between the first connecting ring 81 and the second connecting ring 82, and both ends of the fan blades 83 are fixedly connected to the first connecting ring 81 and the second connecting ring 82 respectively.

[0055] When overhauling the blade 2 and the rotating shaft 1, since the blade 2 and the rotating shaft 1 are in a high-temperature state themselves, it is only possible to wait for the blade 2 and the rotating shaft 1 to cool naturally before performing the overhaul operation. In this embodiment, when overhauling the blade 2 and the rotating shaft 1, first connect the rotating shaft 1 to the fan 8 through the connecting component, and then drive the fan 8 to blow air on the rotating shaft 1 by the rotation of the rotating shaft 1. The cooling of the rotating shaft 1 and the fan 8 is accelerated through the flow of air, greatly shortening the waiting time required for the overhaul.

[0056] An adjustment hole 11 that is communicated with the mating hole 19 and coaxial with the rotating shaft 1 is provided in the rotating shaft 1. An adjustment rod 12 that can slide along the length direction of the rotating shaft 1 is provided in the adjustment hole 11. The adjustment rod 12 is fixedly connected to the transmission shaft 9, and the transmission shaft 9 can slide along the length direction of the rotating shaft 1 in the mating hole 19. A plurality of connection holes 18 that are arranged around the adjustment hole 11 are provided inside the first connection ring 81, and the connection holes 18 penetrate through the rotating shaft 1 outward. The connecting component includes a connecting rod 124 and an elastic member 125. A plurality of connecting rods 124 are provided, and the plurality of connecting rods 124 are respectively arranged in the plurality of connection holes 18. The connecting rod 124 can slide along the radial direction of the rotating shaft 1 in the connection hole 18. The elastic member 125 is arranged inside the rotating shaft 1 and one elastic member 125 corresponds to each connecting rod 124. The elastic member 125 applies an elastic force towards the adjustment rod 12 to the corresponding connecting rod 124. The adjustment rod 12 pushes the connecting rod 124 to extend and retract into the connection hole 18 by sliding in the adjustment hole 11. A plurality of connection grooves 811 corresponding to the plurality of connecting rods 124 are provided inside the first connection ring 81. When the connecting rod 124 extends out of the connection hole 18, it is inserted into the corresponding connection groove 811.

[0057] Specifically, the elastic member 125 is set as a spring.

[0058] Adjustment grooves 123 that are arranged along the length direction of the adjustment rod 12 are provided at the positions of the adjustment rod 12 corresponding to the connecting rods 124. One end of the connecting rod 124 close to the adjustment rod 12 is inserted into the adjustment groove 123, and the side of the adjustment groove 123 away from the support plate 3 is set as an arc.

[0059] When the fan is in normal use, one end of the connecting rod 124 close to the adjusting rod 12 is located in the adjusting groove 123. At this time, the connecting rod 124 completely retracts into the connecting hole 18, so that the connecting rod 124 is separated from the connecting groove 811. As a result, when the rotating shaft 1 rotates, it will not drive the fan 8 to rotate together. When it is necessary to repair the rotating shaft 1 and the blades 2, the sliding of the transmission shaft 9 towards the support plate 3 pushes the adjusting rod 12 to move towards the support plate 3. Then, under the action of the arc at the end of the adjusting groove 123 away from the support plate 3, the connecting rod 124 is pushed to slide away from the adjusting rod 12. Thus, the end of the connecting rod 124 away from the adjusting rod 12 extends out of the connecting hole 18 and is inserted into the connecting groove 811. Then, when the rotating shaft 1 rotates, it can drive the fan 8 to rotate together, and the fan 8 blows air on the rotating shaft 1.

[0060] Specifically, two fans 8 are provided. The two fans 8 are arranged along the length direction of the rotating shaft 1, and the two fans 8 blow air in opposite directions. Corresponding connection components are also provided in two. The fan 8 close to the support plate 3 is the first fan 8, and the fan 8 far from the support plate 3 is the second fan 8. The first fan 8 and the second fan 8 divide the heat preservation housing 7 into three chambers. From the support plate 3 to the motor 91, they are the first chamber 72, the second chamber 73, and the third chamber 74 in sequence. A first air inlet hole 13 is provided in the rotating shaft 1 at the first chamber 72. The first air inlet hole 13 is coaxial with the rotating shaft 1. An air inlet groove 14 is provided at one end of the rotating shaft 1 located in the fan chamber 43. The first air inlet hole 13 is communicated with the air inlet groove 14. A plurality of air outlet holes 141 are provided outside the air inlet groove 14 and penetrate the rotating shaft 1 outward. A plurality of second air inlet holes 15 are provided in the rotating shaft 1 and are arranged around the axis of the rotating shaft 1. One end of the second air inlet hole 15 is communicated with the air inlet groove 14, and the other end extends into the third chamber 74 and can be communicated with the third chamber 74. A first control mechanism and a second control mechanism are provided on the rotating shaft 1. The two control mechanisms are respectively used to control the communication between the first air inlet hole 13 and the second air inlet hole 15 and the outside. Specifically, a ventilation hole 71 is provided at the top of the second chamber 73. A switching plate 711 that slides along the length direction of the rotating shaft 1 is provided at the bottom of the ventilation hole 71. A sliding frame 92 is provided outside the transmission shaft 9. The sliding frame 92 can slide along the length direction of the rotating shaft 1 in the heat preservation housing 7, and the transmission shaft 9 is rotatably connected to the sliding frame 92. The sliding frame 92 is connected to the switching plate 711 to control the opening and closing of the ventilation hole 71 through the sliding of the transmission shaft 9.

[0061] When the fan is working normally, the first control mechanism and the second control mechanism respectively control the first air inlet hole 13 and the second air inlet hole 15 to be closed. When it is necessary to repair the rotating shaft 1 and the blades 2, the transmission shaft 9 slides in the direction close to the support plate 3, thereby driving the first control mechanism and the second control mechanism to open the first air inlet hole 13 and the second air inlet hole 15. The air blown by the two fans 8 respectively passes through the first air inlet hole 13 and the second air inlet hole 15 and enters the air inlet groove 14, and then the air passes through the air inlet groove 14 and blows the air to the blades 2 through the air outlet hole 141. The air flowing in the first air inlet hole 13 and the second air inlet hole 15 can play a role in cooling the rotating shaft 1, and the air can also play a role in cooling the blades 2 after being blown to the blades 2 through the air blowing holes.

[0062] Specifically, a first control hole 16 coaxial with the first air inlet hole 13 is provided at one end of the first air inlet hole 13 close to the motor 91. A second control hole 17 coaxial with the first control hole 16 is provided on the side of the first control hole 16 away from the support plate 3. A plurality of first communication holes 171 arranged around the axis of the rotating shaft 1 are provided at a position close to the first control hole 16 outside the second control hole 17, and the first communication holes 171 penetrate through the rotating shaft 1 outward. The first control mechanism includes a first control part 121 and a second control part 122. The first control part 121 can be completely inserted into the first control hole 16, and a first through hole 1211 is provided on the first control part 121; the second control part 122 is fixedly connected to the side of the first control part 121 away from the support plate 3. The first control part 121 is located in the second control hole 17 and can slide along the axis direction of the rotating shaft 1 in the second control hole 17. One end of the adjusting rod 12 close to the support plate 3 is fixedly connected to the second control part 122. A second through hole 1221 communicated with the first through hole 1211 is provided on the side of the second control part 122 close to the first control part 121. A plurality of third through holes 1222 arranged around the axis of the second control part 122 are provided outside the second through hole 1221. The plurality of third through holes 1222 respectively correspond to the plurality of first communication holes 171. When the second control part 122 is in contact with the hole wall at the end of the second control hole 17 close to the support plate 3, the plurality of third through holes 1222 are respectively aligned with the plurality of first communication holes 171. At this time, the first air inlet hole 13 is communicated with the outside, and at this time, the connecting rod 124 is inserted into the connecting groove 811 to realize the connection between the rotating shaft 1 and the fan 8.

[0063] Specifically, a converging groove 151 is provided at one end of the plurality of second air inlet holes 15 close to the motor 91. A plurality of second communication holes 152 penetrating through the rotating shaft 1 outward are provided outside the converging groove 151; the second control mechanism includes a control ring 153 arranged around the rotating shaft 1. A plurality of control rods 1531 are fixedly connected to the side of the control ring 153 close to the sliding frame 92, and one end of the control rod 1531 away from the control ring 153 is fixedly connected to the sliding frame 92.

[0064] When the fan needs to be used normally, the transmission shaft 9 slides away from the support plate 3 until the connecting rod 124 disengages from the connection groove 811. At this time, the second control part 122 is located on the side of the second through hole 1221 away from the support plate 3, so that the plurality of third through holes 1222 are staggered from the plurality of first air inlet holes 13. And at this time, the control ring 153 blocks outside the plurality of second communication holes 152, and the opening and closing plate 711 blocks the air vent hole 71. Then the transmission shaft 9 drives the rotating shaft 1 to rotate under the action of the motor 91.

[0065] When the fan needs to be overhauled, the transmission shaft 9 moves towards the support plate 3 until the second control part 122 fits with the side of the second through hole 1221 close to the support plate 3. At this time, the connecting rod 124 is inserted into the corresponding connection groove 811, the control ring 153 moves to one side of the plurality of second communication holes 152 and the opening and closing plate 711 moves to one side of the air vent hole 71. Then the transmission shaft 9 drives the rotating shaft 1 to rotate. At this time, the outside air enters the second chamber 73 through the air vent hole 71, and then flows into the first chamber 72 and the third chamber 74 respectively under the action of the two fans 8. The air in the first chamber 72 enters the first air inlet hole 13 through the first communication hole 171, the air in the second chamber 73 enters the second air inlet hole 15 through the second communication hole 152, and the air in the first air inlet hole 13 and the second air inlet hole 15 enters the air inlet groove 14, and then blows towards the blade 2 through the air outlet hole 141.

[0066] Specifically, the end of the air blowing hole away from the air inlet groove 14 is inclined towards the direction away from the axis of the rotating shaft 1.

[0067] Specifically, the motor 91 is arranged outside one end of the heat preservation housing 7 away from the support plate 3. A sliding seat 911 is arranged at the bottom of the motor 91, and a support seat 912 fixedly connected to the outside of the heat preservation housing 7 is arranged at the bottom of the sliding seat 911. The sliding seat 911 slides on the support seat 912 along the axis direction of the rotating shaft 1, and the sliding of the sliding seat 911 on the support seat 912 is driven by a cylinder.

[0068] The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and retouches should also be regarded as the protection scope of the present invention.

Claims

1. A pyrolysis gas blower for a lithium battery negative electrode material pre-carbonization rotary kiln system, characterized in that: It comprises an inner shell, wherein a fan cavity (43) is formed in the inner shell; A rotating shaft (1), one end of the rotating shaft (1) extends into the inner shell and the end of the rotating shaft (1) is fixedly connected to a plurality of blades (2) located in the fan chamber (43); A middle shell (5), the middle shell (5) is coated on the outside of the inner shell and a heating chamber is formed between the middle shell (5) and the inner shell, the middle shell (5) is externally connected to a heat inlet pipe for conveying high-temperature gas to the heating chamber, and the middle shell (5) is externally fixedly connected to a heat outlet pipe for conveying gas in the heating chamber; and an outer shell, the outer shell covering the middle shell (5) and the inner shell, and a heat-insulating layer is arranged on the inner side of the outer shell; It also includes a transmission shaft (9), wherein the transmission shaft (9) is arranged between the rotating shaft (1) and the motor (91); It also includes a fan (8), wherein the fan (8) is sleeved on the outside of the rotating shaft (1) and the fan (8) is rotatably connected in the heat-insulating shell (7); and a connecting assembly, the connecting assembly being used to connect the rotating shaft (1) and the fan (8); The fan (8) comprises a first connecting ring (81), wherein the first connecting ring (81) is sleeved outside the rotating shaft (1); a second connecting ring (82), the second connecting ring (82) being arranged around the first connecting ring (81), the first connecting ring (81) and the second connecting ring (82) being arranged coaxially with the rotating shaft (1), and the second connecting ring (82) being rotatably connected to the heat-insulating shell (7); and a fan blade (83), wherein the fan blade (83) is arranged between the first connecting ring (81) and the second connecting ring (82), and two ends of the fan blade (83) are respectively fixedly connected to the first connecting ring (81) and the second connecting ring (82); The rotating shaft (1) is provided with an adjustment hole (11) which is in communication with the matching hole (19) and is coaxial with the rotating shaft (1); the adjustment hole (11) is provided with an adjustment rod (12) which can slide along the length direction of the rotating shaft (1); the adjustment rod (12) is fixedly connected to the transmission shaft (9); and the transmission shaft (9) can slide in the matching hole (19) along the length direction of the rotating shaft (1); A plurality of connection holes (18) arranged around the adjustment hole (11) are arranged on the inner side of the first connection ring (81), and the connection holes (18) penetrate the rotating shaft (1) outwardly; The connecting assembly comprises a connecting rod (124), a plurality of the connecting rods (124) are provided, and the plurality of connecting rods (124) are respectively arranged in a plurality of connecting holes (18), and the connecting rods (124) can slide in the connecting holes (18) along the radial direction of the rotating shaft (1); and an elastic member (125), wherein the elastic member (125) is arranged in the rotating shaft (1) and each connecting rod (124) corresponds to one elastic member (125), the elastic member (125) applies an elastic force to the corresponding connecting rod (124) in the direction of the adjusting rod (12), the adjusting rod (12) pushes the connecting rod (124) to extend out and retract into the connecting hole (18) by sliding in the adjusting hole (11), and a plurality of connecting grooves (811) corresponding to the plurality of connecting rods (124) are arranged on the inner side of the first connecting ring (81), and the connecting rod (124) is inserted into the corresponding connecting groove (811) when extending out of the connecting hole (18); An adjustment slot (123) is provided along the length direction of the adjustment rod (12) at a position corresponding to the connecting rod (124) on the adjustment rod (12); one end of the connecting rod (124) close to the adjustment rod (12) is inserted into the adjustment slot (123); and the side of the adjustment slot (123) away from the support plate (3) is arranged in an arc shape.

2. A pyrolysis gas blower for a lithium battery negative electrode material pre-carbonization rotary kiln system according to claim 1, characterized in that: The high-temperature gas input into the heating chamber is the high-temperature flue gas generated by the pre-carbonization rotary kiln system.

3. A pyrolysis gas blower for a lithium battery negative electrode material pre-carbonization rotary kiln system according to claim 1, characterized in that: It also comprises a support plate (3), the rotating shaft (1) is rotatably connected to the support plate (3), and a motor (91) drivingly connected to the rotating shaft (1) is arranged on the side of the support plate (3) away from the fan chamber (43).

4. A pyrolysis gas blower for a lithium battery negative electrode material pre-carbonization rotary kiln system according to claim 3, characterized in that: The outer shell comprises a fixed outer plate (61) and a detachable outer plate (62), wherein the fixed outer plate (61) is fixedly connected to the support plate (3), and the detachable outer plate (62) is detachably connected to the support plate (3); The inner shell comprises a fixed inner plate (42) and a removable inner plate (41); the fixed inner plate (42) is fixedly connected to the support plate (3); a heat-insulating layer is filled between the fixed inner plate (42) and the fixed outer plate (61); a middle shell (5) surrounds the circumferential outer side of the inner shell and the side of the inner shell away from the support plate (3); the removable inner plate (41) is fixedly connected to the middle shell (5) and the middle shell (5) is removably connected to the support plate (3); and a heat-insulating layer is filled between the middle shell (5) and the removable outer plate (62).

5. A pyrolysis gas blower for a lithium battery negative electrode material pre-carbonization rotary kiln system according to claim 4, characterized in that: The heating chamber is divided into a first chamber (51) located on the circumferential outer side of the inner shell and a second chamber (52) located on the side of the inner shell away from the support plate (3). A partition plate (53) is provided between the first chamber (51) and the second chamber (52). The partition plate (53) is provided with a plurality of connecting holes (531) for connecting the first chamber (51) and the second chamber (52).

6. A pyrolysis gas blower for a lithium battery negative electrode material pre-carbonization rotary kiln system according to claim 5, characterized in that: It also comprises a heat-insulating shell (7), wherein the heat-insulating shell (7) is fixedly connected to a side of the support plate (3) away from the inner shell; The output end of the motor (91) is connected to the reducer, and the output end of the reducer is connected to the transmission shaft (9). The rotating shaft (1) and the transmission shaft (9) are coaxially arranged. The end of the rotating shaft (1) close to the transmission shaft (9) is provided with a matching hole (19). The end of the transmission shaft (9) close to the rotating shaft (1) is inserted into the matching hole (19). The outer side of the end of the transmission shaft (9) close to the rotating shaft (1) is fixedly connected with a plurality of clamping blocks (93) whose length direction is parallel to the length direction of the rotating shaft (1). The plurality of clamping blocks (93) are arranged around the transmission shaft (9), and the inner and outer sides of the matching hole (19) are provided with a plurality of clamping grooves (191) respectively matching with the plurality of clamping blocks (93).

7. A pyrolysis gas blower for a lithium battery negative electrode material pre-carbonization rotary kiln system according to claim 6, characterized in that: Two fans (8) are provided, the two fans (8) are arranged along the length direction of the rotating shaft (1), and the two fans (8) blow air in directions away from each other, and two corresponding connecting components are also provided, the fan (8) close to the support plate (3) is the first fan (8), and the fan (8) away from the support plate (3) is the second fan (8), and the first fan (8) and the second fan (8) divide the heat preservation shell (7) into three chambers, which are the first chamber (72), the second chamber (73) and the third chamber (74) in order from the support plate (3) to the motor (91); A first air inlet hole (13) is arranged in the rotating shaft (1) at the first chamber (72), the first air inlet hole (13) is coaxial with the rotating shaft (1), an air inlet groove (14) is arranged in one end of the rotating shaft (1) located in the fan chamber (43), the first air inlet hole (13) is communicated with the air inlet groove (14), and a plurality of air outlet holes (141) are arranged outside the air inlet groove (14) and penetrate the rotating shaft (1) outwardly; A plurality of second air inlet holes (15) are arranged in the rotating shaft (1) and are arranged around the axis of the rotating shaft (1); one end of the second air inlet hole (15) is communicated with the air inlet groove (14), and the other end extends into the third chamber (74) and can be communicated with the third chamber (74); The rotating shaft (1) is provided with a first control mechanism and a second control mechanism, and the two control mechanisms are used to control the communication between the first air inlet (13) and the second air inlet (15) and the outside respectively.

8. A pyrolysis gas blower for a lithium battery negative electrode material pre-carbonization rotary kiln system according to claim 7, characterized in that: A vent hole (71) is arranged at the top of the second chamber (73); an opening and closing plate (711) is arranged at the bottom of the vent hole (71) and is slidable along the length direction of the rotating shaft (1); a sliding frame (92) is arranged outside the transmission shaft (9); the sliding frame (92) is capable of sliding along the length direction of the rotating shaft (1) in the heat-insulating shell (7) and the transmission shaft (9) is rotatably connected to the sliding frame (92); the sliding frame (92) is connected to the opening and closing plate (711) so as to control the opening and closing of the vent hole (71) by sliding the transmission shaft (9).

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