Sintering device for preparing lithium iron phosphate by liquid phase method

Abstract

The utility model relates to the field of sintering devices, in particular to a sintering device for preparing lithium iron phosphate by a liquid phase method, which comprises a support table, a sintering cylinder is placed on the support table, a feed port is arranged at the top of the sintering cylinder, a first driving motor is mounted at one end of the sintering cylinder, and a second driving motor is mounted at the other end of the sintering cylinder. The output end of the first driving motor is connected with a first rotating rod, the first rotating rod is fixedly connected with a spiral plate, one end of the sintering cylinder is fixedly connected with a first rectangular shell, a material blocking mechanism is arranged on the first rectangular shell, and one side of the first rectangular shell is fixedly connected with a rectangular box; and a stirring mechanism is arranged in the rectangular box. When the lithium iron phosphate cooling device is used, lithium iron phosphate in the rectangular box can be stirred through the stirring mechanism, so that the lithium iron phosphate can be uniformly cooled, the time required by cooling is greatly shortened, and the cooling effect is better.

Description

TECHNICAL FIELD

[0001] The utility model relates to sintering device technical field especially relates to a kind of sintering device of liquid phase method preparation lithium iron phosphate. BACKGROUND

[0002] Lithium iron phosphate, also known as LFP, is an inorganic compound with the molecular formula LiFePO4, mainly used in various lithium-ion batteries. Lithium iron phosphate is widely used in multiple fields due to its excellent performance: energy storage devices, electric tools, light electric vehicles, small devices, starting power sources, fixed power sources, etc. As an excellent lithium-ion battery cathode material, lithium iron phosphate has broad application prospects and development potential.

[0003] After lithium iron phosphate is prepared using the liquid phase method, it needs to be sintered. After sintering is completed, it needs to be cooled. The existing sintering device cannot be turned over during cooling, resulting in a longer cooling time for the accumulated lithium iron phosphate and poor cooling effect. Therefore, a sintering device for liquid phase method preparation of lithium iron phosphate is proposed. SUMMARY

[0004] The utility model aims at solving the existing sintering device cannot be turned over during cooling, resulting in a longer cooling time for the accumulated lithium iron phosphate and poor cooling effect, and proposes a sintering device for liquid phase method preparation of lithium iron phosphate.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] A sintering device for liquid phase method preparation of lithium iron phosphate, comprising a support table, a sintering cylinder placed on the support table, a feed inlet formed at the top of the sintering cylinder, a first drive motor installed at one end of the sintering cylinder, a first rotating rod connected to the output end of the first drive motor, a spiral plate fixedly connected to the first rotating rod, a first rectangular shell fixedly connected to one end of the sintering cylinder, a material blocking mechanism provided on the first rectangular shell, a rectangular box fixedly connected to one side of the first rectangular shell, and a stirring mechanism provided in the rectangular box.

[0007] Preferably, the material blocking mechanism comprises a second drive motor, a bidirectional screw, a rectangular block, and a first material blocking plate, the output end of the second drive motor is connected to the bidirectional screw, the bidirectional screw is threadedly connected to the rectangular block, and the bottom of the rectangular block is fixedly connected to the first material blocking plate.

[0008] One side of the first material blocking plate is in abutment with one end of the sintering cylinder, a first rectangular opening is formed in the top of the first rectangular shell, the rectangular block is slidably connected with the first rectangular opening, the top of the first rectangular shell is fixedly connected with a rectangular plate, and the second driving motor is mounted on the rectangular plate.

[0009] Preferably, the stirring mechanism comprises a third driving motor, a second rotating rod, a third rotating rod, a first belt pulley, a second belt pulley, a transmission belt, and a stirring rod, the output end of the third driving motor is connected with the second rotating rod, the second rotating rod is fixedly connected with the first belt pulley, the third rotating rod is fixedly connected with the second belt pulley, the transmission belt is sleeved on the first belt pulley and the second belt pulley, and the second rotating rod and the third rotating rod are fixedly connected with the stirring rod.

[0010] Preferably, the top of the rectangular box is fixedly connected with a U-shaped plate, the third driving motor is mounted on the U-shaped plate, the third rotating rod is rotatably connected with the U-shaped plate, and the stirring rod is located in the rectangular box.

[0011] Preferably, the bottom of the rectangular box is fixedly connected with a discharging shell, a second rectangular opening is formed in one side of the discharging shell, one side of the discharging shell is fixedly connected with a second rectangular shell, a fourth driving motor is mounted on one side of the second rectangular shell, the output end of the fourth driving motor is connected with a threaded rod, and the threaded rod is threadedly connected with a second material blocking plate.

[0012] Preferably, the top of the sintering cylinder is provided with a heating device, the two sides of the rectangular box are provided with cooling devices, and the top of the supporting table and the discharging shell are fixedly connected with supporting legs.

[0013] Compared with the prior art, the device has the following beneficial effects:

[0014] 1、When the device is in use, the stirring mechanism operates when the cooling device cools the sintered lithium iron phosphate, and the stirring rod stirs the lithium iron phosphate in the rectangular box, so that the lithium iron phosphate can be uniformly cooled, thereby greatly shortening the cooling time and improving the cooling effect.

[0015] 2、When the device is in use, the first material blocking plate is used to block one end of the sintering cylinder during heating and sintering, so that the unsintered lithium iron phosphate cannot fall into the rectangular box, and the first material blocking plate is also combined together during cooling, so that the lithium iron phosphate cannot fall into the sintering cylinder during stirring.

[0016] 3、The device can block the lithium iron phosphate in the rectangular box through the second material baffle during use, after cooling, the fourth drive motor drives the threaded rod to rotate, the threaded rod drives the second material baffle to move into the second rectangular shell, and the lithium iron phosphate flows out of the device through the discharging shell, and the staff recycles it. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A whole three-dimensional structure schematic diagram of the sintering device for preparing lithium iron phosphate by a liquid phase method is provided for the utility model;

[0018] Figure 2 A first drive motor and spiral plate three-dimensional structure schematic diagram of the sintering device for preparing lithium iron phosphate by a liquid phase method is provided for the utility model;

[0019] Figure 3 A stirring mechanism three-dimensional structure schematic diagram of the sintering device for preparing lithium iron phosphate by a liquid phase method is provided for the utility model;

[0020] Figure 4 A fourth drive motor and second material baffle three-dimensional structure schematic diagram of the sintering device for preparing lithium iron phosphate by a liquid phase method is provided for the utility model.

[0021] In the drawing: 1, support table; 2, sintering cylinder; 3, feeding port; 4, first drive motor; 5, spiral plate; 6, first rectangular shell; 7, rectangular box; 8, second drive motor; 9, bidirectional screw rod; 10, rectangular block; 11, first material baffle; 12, third drive motor; 13, second rotating rod; 14, third rotating rod; 15, first pulley; 16, second pulley; 17, transmission belt; 18, stirring rod; 19, U-shaped plate; 20, discharging shell; 21, second rectangular shell; 22, fourth drive motor; 23, threaded rod; 24, second material baffle; 25, heating device; 26, cooling device. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] REFERENCE Figures 1-4A sintering device for preparing lithium iron phosphate by a liquid phase method includes a support platform 1, a sintering cylinder 2 is placed on the support platform 1, a feeding port 3 is opened on the top of the sintering cylinder 2, a first driving motor 4 is installed at one end of the sintering cylinder 2, the output end of the first driving motor 4 is connected to a first rotating rod, a spiral plate 5 is fixedly connected to the first rotating rod, one end of the sintering cylinder 2 is fixedly connected to a first rectangular shell 6, a material blocking mechanism is provided on the first rectangular shell 6, a rectangular box 7 is fixedly connected to one side of the first rectangular shell 6, and a stirring mechanism is provided in the rectangular box 7;

[0024] A heating device 25 is provided on the top of the sintering cylinder 2, cooling devices 26 are provided on both sides of the rectangular box 7, and the tops of the support platform 1 and the blanking shell 20 are fixedly connected with support legs.

[0025] The first drive motor 4 is powered and controlled to be turned on and off by an external device, lithium iron phosphate is poured into the sintering cylinder 2 from the feed port 3, the heating device 25 heats the sintering cylinder 2, the first drive motor 4 drives the first rotating rod to rotate, and the first rotating rod drives the spiral plate 5 to rotate, and the spiral plate 5 drives the lithium iron phosphate to move from one end to the other end inside the sintering cylinder 2. At the same time, the spiral plate 5 flips the lithium iron phosphate so that the lithium iron phosphate can be heated evenly.

[0026] After the heating is completed, the lithium iron phosphate enters the rectangular box 7 from one end of the sintering cylinder 2 through the first rectangular shell 6 , and the stirring device stirs the lithium iron phosphate in the rectangular box 7 .

[0027] Furthermore, the material blocking mechanism includes a second drive motor 8, a bidirectional screw 9, a rectangular block 10, and a first material blocking plate 11. The output end of the second drive motor 8 is connected to the bidirectional screw 9, the bidirectional screw 9 is threadedly connected to the rectangular block 10, and the bottom of the rectangular block 10 is fixedly connected to the first material blocking plate 11.

[0028] One side of the first baffle plate 11 is against one end of the sintering cylinder 2, a first rectangular opening is opened on the top of the first rectangular shell 6, the rectangular block 10 is slidably connected to the first rectangular opening, a rectangular plate is fixedly connected to the top of the first rectangular shell 6, and the second drive motor 8 is installed on the rectangular plate.

[0029] Among them, the second drive motor 8 is powered by an external device and controlled to open and close. The second drive motor 8 drives the bidirectional screw 9 to rotate. The bidirectional screw 9 drives the rectangular blocks 10 to move closer to or away from each other. The rectangular blocks 10 drive the first baffle plates 11 to move closer to or away from each other. When heating and sintering are performed, the first baffle plates 11 are merged together to block one end of the sintering cylinder 2 to prevent unsintered lithium iron phosphate from falling into the rectangular box 7. When cooling, the first baffle plates 11 are also merged together to prevent the lithium iron phosphate from falling back into the sintering cylinder 2 during stirring.

[0030] Further, the stirring mechanism comprises a third driving motor 12, a second rotating rod 13, a third rotating rod 14, a first belt pulley 15, a second belt pulley 16, a transmission belt 17 and a stirring rod 18, the output end of the third driving motor 12 is connected with the second rotating rod 13, the second rotating rod 13 is fixedly connected with the first belt pulley 15, the third rotating rod 14 is fixedly connected with the second belt pulley 16, the transmission belt 17 is sleeved on the first belt pulley 15 and the second belt pulley 16, and the second rotating rod 13 and the third rotating rod 14 are fixedly connected with the stirring rod 18.

[0031] Wherein, the third driving motor 12 is powered and controlled to be turned on and off by an external device, the third driving motor 12 drives the second rotating rod 13 to rotate, the second rotating rod 13 drives the first belt pulley 15 to rotate, the first belt pulley 15 drives the second belt pulley 16 to rotate through the transmission belt 17, the second belt pulley 16 drives the third rotating rod 14 to rotate, the second rotating rod 13 and the third rotating rod 14 drive the stirring rod 18 to rotate, and the stirring rod 18 stirs the lithium iron phosphate in the rectangular box 7, so that the lithium iron phosphate can be uniformly cooled.

[0032] Further, the top of the rectangular box 7 is fixedly connected with a U-shaped plate 19, the third driving motor 12 is installed on the U-shaped plate 19, the third rotating rod 14 is rotatably connected with the U-shaped plate 19, and the stirring rod 18 is located in the rectangular box 7.

[0033] Wherein, the U-shaped plate 19 provides sufficient space for the first belt pulley 15 and the second belt pulley 16 to be fixed to the second rotating rod 13 and the third rotating rod 14.

[0034] Further, the bottom of the rectangular box 7 is fixedly connected with a discharging shell 20, one side of the discharging shell 20 is provided with a second rectangular opening, one side of the discharging shell 20 is fixedly connected with a second rectangular shell 21, one side of the second rectangular shell 21 is installed with a fourth driving motor 22, the output end of the fourth driving motor 22 is connected with a threaded rod 23, and the threaded rod 23 is threadedly connected with a second blocking plate 24.

[0035] Wherein, the fourth driving motor 22 is powered and controlled to be turned on and off by an external device, when cooling, the second blocking plate 24 blocks the lithium iron phosphate in the rectangular box 7, after cooling is completed, the fourth driving motor 22 drives the threaded rod 23 to rotate, the threaded rod 23 drives the second blocking plate 24 to move and be received in the second rectangular shell 21, the lithium iron phosphate flows out of the device through the discharging shell 20, and a worker recycles the lithium iron phosphate.

[0036] Meanwhile, the specific model specifications of the first driving motor 4, the second driving motor 8, the third driving motor 12 and the fourth driving motor 22 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the field, so it is not described here.

[0037] The working principle of the utility model is:

[0038] The lithium iron phosphate is poured into the sintering cylinder 2 from the feeding port 3, the heating device 25 heats the sintering cylinder 2, the first driving motor 4 drives the first rotating rod to rotate, the first rotating rod drives the spiral plate 5 to rotate, the spiral plate 5 drives the lithium iron phosphate to move from one end to the other end inside the sintering cylinder 2, at the same time, the spiral plate 5 stirs the lithium iron phosphate, so that the lithium iron phosphate can be heated uniformly;

[0039] After sintering, the second driving motor 8 drives the bidirectional screw rod 9 to rotate, the bidirectional screw rod 9 drives the rectangular blocks 10 to move away from each other, the rectangular blocks 10 drive the first material blocking plates 11 to move away from each other, the spiral plate 5 makes the lithium iron phosphate fall into the rectangular box 7;

[0040] Subsequently, the first material blocking plates 11 are also combined together, the cooling device 26 cools the sintered lithium iron phosphate in the rectangular box 7, the third driving motor 12 drives the second rotating rod 13 to rotate, the second rotating rod 13 drives the first belt pulley 15 to rotate, the first belt pulley 15 drives the second belt pulley 16 to rotate through the transmission belt 17, the second belt pulley 16 drives the third rotating rod 14 to rotate, the second rotating rod 13 and the third rotating rod 14 together drive the stirring rod 18 to rotate, the stirring rod 18 stirs the lithium iron phosphate in the rectangular box 7, so that the lithium iron phosphate can be cooled uniformly;

[0041] Finally, after cooling, the fourth driving motor 22 drives the threaded rod 23 to rotate, the threaded rod 23 drives the second material blocking plate 24 to move, and is collected into the second rectangular shell 21, the lithium iron phosphate flows out of the device through the discharging shell 20, and the staff recycles it.

[0042] The above is only the preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A sintering device for preparing lithium iron phosphate by liquid phase method, comprising a support table (1), characterized in that, The support table (1) is provided with a sintering cylinder (2), the top of the sintering cylinder (2) is provided with a feeding port (3), one end of the sintering cylinder (2) is provided with a first driving motor (4), the output end of the first driving motor (4) is connected with a first rotating rod, the first rotating rod is fixedly connected with a spiral plate (5), one end of the sintering cylinder (2) is fixedly connected with a first rectangular shell (6), the first rectangular shell (6) is provided with a material blocking mechanism, one side of the first rectangular shell (6) is fixedly connected with a rectangular box (7), the rectangular box (7) is provided with an agitating mechanism.

2. The sintering device for preparing lithium iron phosphate by liquid phase method according to claim 1, characterized in that, The material blocking mechanism comprises a second driving motor (8), a bidirectional screw rod (9), a rectangular block (10) and a first material blocking plate (11), the output end of the second driving motor (8) is connected with the bidirectional screw rod (9), the bidirectional screw rod (9) is threadedly connected with the rectangular block (10), and the bottom of the rectangular block (10) is fixedly connected with the first material blocking plate (11). One side of the first material blocking plate (11) abuts against one end of the sintering cylinder (2), the top of the first rectangular shell (6) is provided with a first rectangular opening, the rectangular block (10) is slidably connected with the first rectangular opening, and the top of the first rectangular shell (6) is fixedly connected with a rectangular plate. 3.The sintering device for preparing lithium iron phosphate by liquid phase method according to claim 1, characterized in that, The agitating mechanism comprises a third driving motor (12), a second rotating rod (13), a third rotating rod (14), a first belt pulley (15), a second belt pulley (16), a transmission belt (17) and an agitating rod (18), the output end of the third driving motor (12) is connected with the second rotating rod (13), the second rotating rod (13) is fixedly connected with the first belt pulley (15), the third rotating rod (14) is fixedly connected with the second belt pulley (16), the transmission belt (17) is sleeved on the first belt pulley (15) and the second belt pulley (16), and the second rotating rod (13) and the third rotating rod (14) are fixedly connected with the agitating rod (18). 4.The sintering device for preparing lithium iron phosphate by liquid phase method according to claim 3, characterized in that, The top of the rectangular box (7) is fixedly connected with a U-shaped plate (19), the third driving motor (12) is installed on the U-shaped plate (19), the third rotating rod (14) is rotatably connected with the U-shaped plate (19), and the agitating rod (18) is located in the rectangular box (7).

5. The sintering device for preparing lithium iron phosphate by liquid phase method according to claim 1, characterized in that, The bottom of the rectangular box (7) is fixedly connected with a discharging shell (20), one side of the discharging shell (20) is provided with a second rectangular opening, one side of the discharging shell (20) is fixedly connected with a second rectangular shell (21), one side of the second rectangular shell (21) is provided with a fourth driving motor (22), the output end of the fourth driving motor (22) is connected with a threaded rod (23), and the threaded rod (23) is threadedly connected with a second material blocking plate (24). 6.The sintering device for preparing lithium iron phosphate by liquid phase method according to claim 5, characterized in that, The top of the sintering cylinder (2) is provided with a heating device (25), the two sides of the rectangular box (7) are provided with cooling devices (26), and the top of the support table (1) and the discharging shell (20) are fixedly connected with supporting legs.

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