Pyrolysis gas fan for lithium battery negative electrode material pre-carbonization rotary kiln system

Abstract

According to the technical scheme, the pyrolysis gas draught fan for the lithium battery negative electrode material pre-carbonization rotary kiln system is characterized in that the pyrolysis gas draught fan comprises an inner layer shell, and a draught fan cavity is formed in the inner layer shell; one end of the rotating shaft extends into the inner-layer shell; the inner-layer shell is wrapped with the middle-layer shell, a heating cavity is formed between the middle-layer shell and the inner-layer shell, the outer portion of the middle-layer shell is connected with a heat inlet pipe used for conveying high-temperature gas to the heating cavity, and the outer portion of the middle-layer shell is fixedly connected with a heat outlet pipe used for sending out gas in the heating cavity; the middle-layer shell and the inner-layer shell are wrapped with the outer-layer shell, and a heat preservation layer is arranged on the inner side of the outer-layer shell; high-temperature gas is introduced into the heating cavity to heat tar gas volatile components entering the fan cavity, so that the temperature of the tar gas volatile components cannot be reduced to below 450 DEG C, and the tar gas volatile components cannot be adhered to a pipeline, so that frequent shutdown cleaning is not needed, and the operation cost of equipment is reduced.

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; 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; 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; 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.

[0006] 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.

[0007] 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.

[0008] The present invention is further configured as follows: the outer shell comprises 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; The inner shell includes a fixed inner plate and a removable inner plate, the fixed inner plate is fixedly connected to the support plate, an insulation 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 removable inner plate is fixedly connected to the middle shell and the middle shell is removably connected to the support plate, and an insulation layer is filled between the middle shell and the removable outer plate.

[0009] The present invention is further configured as follows: 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 arranged between the first cavity and the second cavity, and a plurality of connecting holes are arranged on the partition plate to connect the first cavity and the second cavity.

[0010] The present invention is further configured as follows: it also includes a heat-insulating shell, the heat-insulating shell is fixedly connected to a side of the support plate away from the inner shell; 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 the reducer, the output end of the reducer is connected to the transmission shaft, the rotating shaft and the transmission shaft are coaxially arranged, the end of the rotating shaft close to the transmission shaft is provided with a matching hole, the end of the transmission shaft close to the rotating shaft is inserted into the matching hole, the outer side of the transmission shaft close to the rotating shaft end is fixedly connected with a plurality of clamping blocks whose length direction is parallel to the length direction of the rotating shaft, the plurality of clamping blocks are arranged around the transmission shaft, and the inner and outer sides of the matching hole are provided with a plurality of clamping grooves respectively matched with the plurality of clamping blocks.

[0011] The present invention is further configured to include: a fan, the fan is sleeved on the outside of the rotating shaft and the fan is rotatably connected in the heat-insulating shell; and a connecting assembly, the connecting assembly being used to connect the rotating shaft to the fan; The fan comprises a first connecting ring, which is sleeved outside the rotating shaft; a second connecting ring, the second connecting ring is arranged around the first connecting ring, the first connecting ring and the second connecting ring are arranged coaxially with the rotating shaft, and the second connecting ring is rotatably connected to the heat-insulating shell; and a fan blade, wherein the fan blade is arranged between the first connecting ring and the second connecting ring and two ends of the fan blade are respectively fixedly connected to the first connecting ring and the second connecting ring; The rotating shaft is provided with an adjustment hole which is connected with the matching hole and is coaxial with the rotating shaft, the adjustment hole is provided with an adjustment rod which can slide along the length direction of the rotating shaft, the adjustment rod is fixedly connected to the transmission shaft, and the transmission shaft can slide in the matching hole along the length direction of the rotating shaft; The first connecting ring is provided with a plurality of connecting holes arranged around the adjusting hole on the inner side, and the connecting holes penetrate the rotating shaft outward; The connecting assembly includes a connecting rod, wherein a plurality of connecting rods are provided, and the plurality of connecting rods are respectively provided in a plurality of connecting holes, and the connecting rods can slide in the connecting holes along the radial direction of the rotating shaft; And an elastic member, the elastic member is arranged in the rotating shaft and each connecting rod corresponds to an elastic member, the elastic member applies an elastic force toward the adjustment rod to the corresponding connecting rod, the adjustment rod pushes the connecting rod to extend and retract into the connecting hole by sliding in the adjustment hole, and a plurality of connecting grooves corresponding to the plurality of connecting rods are arranged on the inner side of the first connecting ring, and the connecting rod is inserted into the corresponding connecting groove when extending from the connecting hole.

[0012] The present invention is further configured as follows: the position on the adjusting rod corresponding to the connecting rod is provided with an adjusting groove arranged along the length direction of the adjusting rod, the connecting rod is inserted into the adjusting groove at one end close to the adjusting rod, and the adjusting groove is arranged in an arc shape away from the support plate.

[0013] The present invention is further configured as follows: two fans are provided, 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, two corresponding connecting components are also provided, the fan close to the support plate is the first fan, the fan away from the support plate is the second fan, the first fan and the second fan divide the heat preservation shell into three chambers, which are the first chamber, the second chamber and the third chamber in order from the support plate to the motor; A first air inlet is provided in the rotating shaft at the first chamber, the first air inlet is coaxial with the rotating shaft, an air inlet groove is provided in one end of the rotating shaft located in the fan chamber, the first air inlet is communicated with the air inlet groove, and a plurality of air outlets are provided outside the air inlet groove and penetrate the rotating shaft outward; A plurality of second air inlet holes are arranged around the axis of the rotating shaft in the rotating shaft, one end of the second air inlet hole is connected to the air inlet groove, and the other end extends into the third chamber and can be connected to the third chamber; The rotating shaft is provided with a first control mechanism and a second control mechanism, and 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 world.

[0014] The present invention is further configured as follows: a vent hole is provided at the top of the second chamber, an opening and closing plate sliding along the length direction of the rotating shaft is provided at the bottom of the vent hole, a sliding frame is provided outside the transmission shaft, the sliding frame can slide along the length direction of the rotating shaft in the heat-insulating shell and the transmission shaft is rotatably connected to the sliding frame, and the sliding frame is connected to the opening and closing plate to control the opening and closing of the vent hole through the sliding of the transmission shaft.

[0015] In summary, compared with the prior art, the present invention has the following beneficial effects: the present invention can heat the volatile matter of tar gas entering the fan chamber by introducing high-temperature gas into the heating chamber, so that its temperature 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional view of an inner shell, a middle shell and an outer shell of an embodiment; Figure 2 The schematic diagram of the heat-insulating housing is shown in the embodiment; Figure 3 A cross-sectional view of an adjusting rod is shown in the embodiment; Figure 4 for Figure 3 A magnified schematic diagram of part A; Figure 5 for Figure 3 An enlarged schematic diagram of part B; Figure 6 for Figure 3 An enlarged schematic diagram of the C portion; Figure 7 is a cross-sectional view of a second air inlet hole in an embodiment; Figure 8 A schematic diagram of a fan structure is shown in the embodiment; Fig. 9 for Figure 8 An enlarged schematic diagram of the D portion; Fig.10 The figure is a schematic diagram of a card slot and a card block according to an embodiment.

[0017] 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 slot; 124, connecting rod; 125, elastic member; 13, first air inlet hole; 14, air inlet slot; 141, air outlet hole; 15, second air inlet hole; 151, converging slot; 152, second connecting hole; 153, control ring; 1531, control rod; 16, first control hole; 17, second control hole; 171, first connecting hole; 18, connecting hole; 19, matching hole; 191, slot; 2, blade; 3. Support plate; 41. Remove the inner plate; 42. Fix the inner plate; 43. Fan cavity; 5. Middle shell; 51. First cavity; 52. Second cavity; 53. Partition plate; 531. Connection hole; 61. Fix the outer plate; 62. Remove the outer plate; 63. Filling layer; 7. Insulation shell; 71. Vent 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 DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is clearly and completely described below in conjunction with the accompanying drawings of the present invention. Based on the embodiments in this application, other similar embodiments obtained by ordinary technicians in this field without making creative work should all fall within the scope of protection of this application. In addition, the directional words mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional words used are used to illustrate rather than limit the invention.

[0019] The present invention will be further described below in conjunction with the accompanying drawings and preferred embodiments.

[0020] Embodiment: A pyrolysis gas blower for a lithium battery negative electrode material pre-carbonization rotary kiln system, see attached Figure 1 -Attached Fig.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.

[0021] 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.

[0022] 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.

[0023] 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 transmission-connected to the rotating shaft 1 is disposed on a side of the support plate 3 away from the fan chamber 43 .

[0024] 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.

[0025] 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.

[0026] Specifically, the heating chamber is divided into a first cavity 51 located on the circumferential outer side of the inner shell and a second cavity 52 located on the side of the inner shell away from the support plate 3. A partition plate 53 is arranged between the first cavity 51 and the second cavity 52. ​​The partition plate 53 is provided with a plurality of connecting holes 531 connecting the first cavity 51 and the second cavity 52.

[0027] Specifically, this embodiment also includes a heat-insulating shell 7 and a transmission shaft 9, wherein the heat-insulating shell 7 is fixedly connected to the side of the support plate 3 away from the inner shell; 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 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, and a matching hole 19 is provided at one end of the rotating shaft 1 close to the transmission shaft 9, and the end of the transmission shaft 9 close to the rotating shaft 1 is inserted into the matching hole 19, and a plurality of clamping blocks 93 whose length direction is parallel to the length direction of the rotating shaft 1 are fixedly connected to the outer side of the end of the transmission shaft 9 close to the rotating shaft 1, and the plurality of clamping blocks 93 are arranged around the transmission shaft 9, and a plurality of clamping grooves 191 respectively matching with the plurality of clamping blocks 93 are provided inside and outside the matching hole 19.

[0028] By setting the thermal insulation shell 7, the part of the rotating shaft 1 located on the side of the support plate 3 away from the fan chamber 43 and the transmission shaft 9 can be covered in the thermal insulation shell 7, thereby reducing the heat dissipation of the rotating shaft 1 and the transmission shaft 9 to the outside, thereby reducing the temperature in the fan chamber 43 from being transferred to the outside through the rotating shaft 1 and the transmission shaft 9, so that the temperature in the fan chamber 43 can be more easily maintained above 450°C.

[0029] Specifically, this embodiment also includes a fan 8 and a connecting assembly, wherein the fan 8 is sleeved on the outside of the rotating shaft 1 and the fan 8 is rotatably connected in the heat preservation shell 7; the connecting assembly is used to connect the rotating shaft 1 with the fan 8; the fan 8 includes a first connecting ring 81, a second connecting ring 82 and a fan blade 83, wherein the first connecting ring 81 is sleeved on the outside of 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 shell 7; the fan blade 83 is arranged between the first connecting ring 81 and the second connecting ring 82 and the two ends of the fan blade 83 are respectively fixedly connected to the first connecting ring 81 and the second connecting ring 82.

[0030] When inspecting the blades 2 and the rotating shaft 1, since the blades 2 and the rotating shaft 1 are in a high temperature state, it is only possible to wait for the blades 2 and the rotating shaft 1 to cool down naturally before the inspection operation can be performed; in this embodiment, when inspecting the blades 2 and the rotating shaft 1, the rotating shaft 1 is first connected to the fan 8 through a connecting component, and then the rotating shaft 1 is rotated to drive the fan 8 to blow air to the rotating shaft 1, and the flow of air accelerates the cooling of the rotating shaft 1 and the fan 8, thereby greatly shortening the waiting time required for inspection.

[0031] The rotating shaft 1 is provided with an adjustment hole 11 which is connected 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. The transmission shaft 9 can slide along the length direction of the rotating shaft 1 in the matching hole 19. The inner side of the first connecting ring 81 is provided with a plurality of connecting holes 18 which are arranged around the adjustment hole 11. The connecting holes 18 penetrate the rotating shaft 1 outward. The connecting assembly includes a connecting rod 124 and an elastic member 125. The connecting rod 124 is provided with a plurality of connecting rods, and the plurality of connecting rods 124 are respectively arranged at a plurality of connecting rods 124. In the connecting hole 18, the connecting rod 124 can slide in the connecting hole 18 along the radial direction of the rotating shaft 1; the elastic member 125 is arranged in the rotating shaft 1 and each connecting rod 124 corresponds to an elastic member 125, the elastic member 125 applies an elastic force toward the adjustment rod 12 to the corresponding connecting rod 124, and the adjustment rod 12 pushes the connecting rod 124 to extend and retract into the connecting hole 18 by sliding in the adjustment hole 11. The inner side of the first connecting ring 81 is provided with multiple connecting grooves 811 corresponding to the multiple connecting rods 124 respectively, and the connecting rod 124 is inserted into the corresponding connecting groove 811 when extending out of the connecting hole 18.

[0032] Specifically, the elastic member 125 is configured as a spring.

[0033] The position of the adjusting rod 12 corresponding to the connecting rod 124 is provided with an adjusting groove 123 arranged along the length direction of the adjusting rod 12. The connecting rod 124 is inserted into the adjusting groove 123 near one end of the adjusting rod 12. The adjusting groove 123 is arranged in an arc shape away from the support plate 3.

[0034] When the fan is in normal use, the end of the connecting rod 124 close to the adjusting rod 12 is located in the adjusting slot 123, and the connecting rod 124 is completely retracted into the connecting hole 18, so that the connecting rod 124 is disengaged from the connecting slot 811, and the shaft 1 will not drive the fan 8 to rotate during the rotation process; and when the shaft 1 and the blades 2 need to be inspected and repaired, the adjusting rod 12 is pushed to move in the direction close to the support plate 3 by sliding the transmission shaft 9 toward the support plate 3, so that the connecting rod 124 is pushed to slide in the direction away from the adjusting rod 12 under the action of the arc of the adjusting slot 123 away from the support plate 3, so that 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 slot 811, and then the fan 8 can be driven to rotate during the rotation process of the shaft 1, and the shaft 1 is blown by the fan 8.

[0035] Specifically, two fans 8 are provided, and 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 from the support plate 3 to the motor 91; a first air inlet 13 is provided in the rotating shaft 1 at the first chamber 72, and the first air inlet 13 is coaxial with the rotating shaft 1, so An air inlet groove 14 is provided at one end of the rotating shaft 1 located in the fan cavity 43, and the first air inlet hole 13 is connected to the air inlet groove 14. A plurality of air outlet holes 141 that penetrate the rotating shaft 1 outward are provided outside the air inlet groove 14; a plurality of second air inlet holes 15 that are arranged around the axis of the rotating shaft 1 are provided in the rotating shaft 1, and one end of the second air inlet hole 15 is connected to the air inlet groove 14, and the other end extends into the third chamber 74 and can be connected to the third chamber 74; a first control mechanism and a second control mechanism are provided on the rotating shaft 1, and the two control mechanisms are respectively used to control the connection between the first air inlet hole 13 and the second air inlet hole 15 and the outside world. Specifically, a vent hole 71 is provided on the top of the second chamber 73, and an opening and closing plate 711 sliding along the length direction of the rotating shaft 1 is provided at the bottom of the vent 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 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 to control the switch of the vent hole 71 by sliding of the transmission shaft 9.

[0036] When the fan is working normally, the first control mechanism and the second control mechanism respectively control the first air inlet 13 and the second air inlet 15 to be closed. When the rotating shaft 1 and the blade 2 need to be inspected, the transmission shaft 9 slides toward 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 13 and the second air inlet 15. The wind blown by the two fans 8 passes through the first air inlet 13 and the second air inlet 15 into the air inlet groove 14 respectively, and then the air is blown toward the blade 2 through the air outlet 141 through the air inlet groove 14. The air can cool the rotating shaft 1 in the process of flowing through the first air inlet 13 and the second air inlet 15, and can also cool the blade 2 after being blown toward the blade 2 through the blowing hole.

[0037] 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 at one side of the first control hole 16 away from the support plate 3, and 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 the rotating shaft 1 outwardly. 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 in the second control hole 17 along the axis direction of the rotating shaft 1, and the end of the adjustment rod 12 close to the support plate 3 is fixedly connected to the second control part 122. A second through hole 1221 connected to the first through hole 1211 is provided on one side of the second control portion 122 close to the first control portion 121, and a plurality of third through holes 1222 arranged around the axis of the second control portion 122 are provided on the outer side of the second through hole 1221. The plurality of third through holes 1222 respectively correspond to the plurality of first connecting holes 171. When the second control portion 122 and the second control hole 17 are fitted with the hole wall close to one end of the support plate 3, the plurality of third through holes 1222 are respectively aligned with the plurality of first connecting holes 171. At this time, the first air inlet 13 is connected 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.

[0038] Specifically, a convergence groove 151 is provided at one end of the plurality of second air inlet holes 15 close to the motor 91, and a plurality of second connecting holes 152 penetrating outwardly through the rotating shaft 1 are provided on the outer side of the convergence groove 151; the second control mechanism includes a control ring 153 arranged around the rotating shaft 1, and a plurality of control rods 1531 are fixedly connected to a side of the control ring 153 close to the sliding frame 92, and an end of the control rod 1531 away from the control ring 153 is fixedly connected to the sliding frame 92.

[0039] When the fan needs to be used normally, the transmission shaft 9 slides in the direction away from the support plate 3 until the connecting rod 124 is disengaged from the connecting 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 with the plurality of first air inlet holes 13, and at this time, the control ring 153 is blocked outside the plurality of second connecting holes 152, and the opening and closing plate 711 blocks the vent 71. Then, the transmission shaft 9 drives the rotating shaft 1 to rotate under the action of the motor 91.

[0040] When the fan needs to be repaired, the transmission shaft 9 moves toward the direction close to the support plate 3 until the second control part 122 is in contact with the second through hole 1221 close to the support plate 3. At this time, the connecting rod 124 is inserted into the corresponding connecting groove 811, the control ring 153 moves to the side of the multiple second connecting holes 152 and the opening and closing plate 711 moves to the side of the vent 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 vent 71, and then flows to 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 13 through the first connecting hole 171, and the air in the second chamber 73 enters the second air inlet 15 through the second connecting hole 152. The air in the first air inlet 13 and the second air inlet 15 enters the air inlet groove 14, and then blows to the blade 2 through the air outlet 141.

[0041] Specifically, one end of the blowing hole away from the air inlet groove 14 is inclined toward a direction away from the axis of the rotating shaft 1 .

[0042] Specifically, the motor 91 is arranged on the outer side of the end of the insulation shell 7 away from the support plate 3, and a sliding seat 911 is arranged at the bottom of the motor 91. A support seat 912 fixedly connected to the outside of the insulation shell 7 is arranged at the bottom of the sliding seat 911. The sliding seat 911 slides on the support seat 912 along the axial direction of the rotating shaft 1, and the sliding of the sliding seat 911 on the support seat 912 is driven by the cylinder.

[0043] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention 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, wherein the outer shell is coated on the outside of the middle shell (5) and the inner shell, and a heat-insulating layer is arranged on the inner side of the outer shell.

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; and a transmission shaft (9), wherein 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 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: 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 an elastic member (125), the elastic member (125) applies an elastic force toward the adjustment rod (12) to the corresponding connecting rod (124), the adjustment rod (12) pushes the connecting rod (124) to extend out and retract into the connecting hole (18) by sliding in the adjustment 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).

8. A pyrolysis gas blower for a lithium battery negative electrode material pre-carbonization rotary kiln system according to claim 7, characterized in that: 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.

9. A pyrolysis gas blower for a lithium battery negative electrode material pre-carbonization rotary kiln system according to claim 8, 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.

10. A pyrolysis gas blower for a lithium battery negative electrode material pre-carbonization rotary kiln system according to claim 9, 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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