Crystallization device for preparing lithium iron phosphate by high-temperature solid-phase method

Abstract

The invention provides a crystallization device for preparing lithium iron phosphate by a high-temperature solid-phase method, and relates to the technical field of lithium iron phosphate preparation, the crystallization device comprises a tubular furnace, the bottom of the tubular furnace is uniformly and fixedly connected with supporting legs, the top of the tubular furnace is provided with a feeding port, the top of the feeding port is provided with a connecting cover, and the connecting cover is provided with a plurality of connecting holes; a discharging pipe is arranged at the bottom of the tubular furnace, an electromagnetic valve is arranged in the discharging pipe, and when the recycling device is used and processed raw materials need to be conveyed out of the tubular furnace through the discharging pipe, hot air generated in the tubular furnace enters a fixing pipe through a connecting pipe at the moment and then comes out of an air outlet; and when the hot air moves in the connecting pipe, the interior of the water tank is all cold water, so that the hot air exchanges heat with the cold water in the water tank when moving in the fixed pipe, the temperature of the cold water can be increased, and heat recovery can be carried out to a certain extent.

Description

Technical Field

[0001] The invention relates to the technical field of preparing lithium iron phosphate, and in particular to a crystallization device for preparing lithium iron phosphate by a high-temperature solid phase method. Background Art

[0002] The crystallization device is a device used to make the raw materials react at high temperature in the preparation of lithium iron phosphate by a high-temperature solid-phase method. When using the crystallization device, the raw materials for preparing lithium iron phosphate by a high-temperature fixed method are pre-treated and placed inside a tubular furnace. After being heated to a certain degree by the tubular furnace, they are heated inside the tubular furnace for a period of time to crystallize the raw materials and react into lithium iron phosphate.

[0003] The inventors have found in their daily work that the crystallization device still has at least the following problems: when using the crystallization device, the raw materials for preparing lithium iron phosphate by the high-temperature fixation method are pre-treated and placed inside a tubular furnace. After being heated to a certain degree by the tubular furnace, they are heated inside the tubular furnace for a period of time to crystallize the raw materials and react into lithium iron phosphate. However, in actual use, when the crystallized product is taken out of the tubular furnace, a large amount of hot gas is released, and the hot gas directly enters the atmosphere, and the thermal energy of the hot gas cannot be well utilized. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a crystallization device for preparing lithium iron phosphate by a high-temperature solid phase method.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a crystallization device for preparing lithium iron phosphate by a high-temperature solid phase method, comprising a tubular furnace, the bottom of which is evenly fixedly connected with support legs, the top of which is provided with a feed port, the top of which is provided with a connecting cover, the bottom of which is provided with a discharge pipe, the interior of which is provided with a solenoid valve, one side of which is provided with a recovery device, the bottom of which is provided with a connecting device, the recovery device comprises a connecting pipe, one side of the discharge pipe of the connecting pipe is fixedly connected, the connecting pipe and the discharge pipe are communicated together, the inner wall of the connecting pipe is fixedly connected with a filter screen, one end of the connecting pipe away from the discharge pipe is fixedly connected with a water tank, the inner wall of the water tank is fixedly connected with a fixed pipe, one end of the fixed pipe and the connecting pipe are arranged together, the fixed pipe and the interior of the connecting pipe are communicated together, the top of the water tank is provided with an air outlet, the top of the water tank is provided with a water inlet, the bottom of one side of the water tank is provided with a drain pipe, and the inner wall of the drain pipe is provided with a valve.

[0006] The effect achieved by the above components is: when using the recovery device, when the processed raw materials need to be transported out of the tubular furnace through the discharge pipe, the hot air generated inside the tubular furnace enters the fixed tube through the connecting pipe, and then comes out from the air outlet. Because the inside of the water tank is full of cold water when the hot air moves inside the connecting pipe, the hot air exchanges heat with the cold water inside the water tank when moving inside the fixed tube, which can increase the temperature of the cold water and thus can recover heat to a certain extent.

[0007] Preferably, a heat sink is uniformly inserted through the surface of the fixed tube, one end of the heat sink is arranged inside the fixed tube, and the end of the heat sink away from the inside of the fixed tube is arranged inside the water tank.

[0008] The effect achieved by the above components is: because one end of the heat sink is arranged inside the fixed pipe and the other end is arranged inside the water tank, the heat sink can increase the efficiency of heat exchange between hot air and cold water to a certain extent.

[0009] Preferably, a baffle is fixedly connected to the inner wall of the connecting tube, and the upper part of the baffle is evenly provided with a first air outlet, and a cylinder is rotatably provided on the inner wall of the connecting tube, and the upper part of the cylinder is evenly provided with a second air outlet, and a notch is provided on the surface of the connecting tube, and a connecting plate is slidably provided on the inner wall of the notch, and one end of the notch and the cylinder are rotatably sleeved on the surface of the connecting tube, and the inner wall of the cylinder and an end of the connecting plate away from the cylinder are fixedly connected, and circular grooves are evenly provided on the surface of the connecting tube, and a fixing ring is rotatably provided on the inner wall of the circular groove, and one end of the fixing ring away from the circular groove is fixedly connected to the inner wall of the cylinder.

[0010] The effect achieved by the above-mentioned components is: when it is necessary to let the hot air enter the water tank through the connecting pipe, the cylinder can be well restricted to rotate on the surface of the connecting pipe through the fixing ring, and then the cylinder can be manually controlled to rotate on the surface of the connecting pipe, which can drive the connecting plate to slide on the inner wall of the notch, because one end of the connecting plate is fixedly connected to one side of the cylinder, so that the rotation of the cylinder inside the connecting pipe can be well controlled, so that the first air outlet and the second air outlet can be aligned, so that the hot air can pass through the connecting pipe and enter the water tank well.

[0011] Preferably, a semicircular groove is provided on one side of the water tank, and a sliding block is slidably connected to the inner wall of the semicircular groove, and an end of the sliding block away from the semicircular groove is fixedly connected to an end of the cylinder away from the connecting pipe and close to the water tank; a rectangular groove is provided on the end of the water tank close to the connecting pipe, and a first locking plate is slidably connected to the inner wall of the rectangular groove, and the first locking plate is slidably sleeved on the surface of the sliding block away from the semicircular groove, and a first spring is fixedly connected to the side of the inner wall of the rectangular groove close to the water tank, and an end of the first spring away from the rectangular groove is fixedly connected to an end of the first locking plate close to the rectangular groove.

[0012] The effect achieved by the above-mentioned components is: when the control cylinder rotates on the surface of the connecting pipe, it can drive the sliding block to slide on the inner wall of the semicircular groove. When the first air outlet and the second air outlet are aligned, the first clamping plate is manually controlled to slide to the inside of the rectangular groove, so that the first clamping plate can be sleeved on the surface of the sliding block, and the first clamping plate is pulled toward the inside of the rectangular groove by the first spring, thereby well restricting the first clamping plate to the surface of the sliding block, so that the sliding block can be fixed inside the semicircular groove, thereby keeping the first air outlet and the second air outlet aligned, so that hot air can pass through the connecting pipe well.

[0013] Preferably, the connecting device includes a support plate, the top of the support plate is fixedly connected to one end of the support leg, the bottom of the support plate is evenly and fixedly connected to a support rod, the inclined plate is limited to the bottom of the support plate, the inclined plate is arranged in the middle of the two support rods, and the inclined plate is arranged at the bottom of the discharge pipe.

[0014] The effect achieved by the above components is: when using the connecting device, the inclined plate is set at the bottom of the discharge pipe, so that the processed raw materials can pass through the inclined plate away from the bottom of the discharge pipe, so that the processed raw materials can be conveniently transported out of the bottom of the tube furnace.

[0015] Preferably, a connecting groove is provided on one side of the two support rods close to the support plate, a second clamping plate is slidably connected to the inner wall of the connecting groove, and the two second clamping plates are fixedly connected to the side of the inclined plate on one side away from the connecting groove, and an arc groove is provided on the top of the second clamping plate.

[0016] The effect achieved by the above components is: manually slide the second positioning plate into the inside of the connecting groove, so that the inclined plate can be well restricted in the middle of the two support rods, and then the inclined plate can be restricted to the bottom of the discharge pipe.

[0017] Preferably, a support ring is fixedly connected to the surface of the support rod, a damping rod is evenly fixedly connected to the bottom of the support ring, a sliding cylinder is fixedly connected to the bottom of the damping rod, the sliding cylinder is slidably sleeved on the surface of the support rod, a second spring is sleeved on the surface of the damping rod, one end of the second spring is fixedly connected to the bottom of the support ring, one end of the second spring close to the damping rod is fixedly connected to the top of the sliding cylinder, and one end of the sliding cylinder away from the damping rod is slidably connected to the inner wall of the arc groove.

[0018] The effect achieved by the above components is: sliding the sliding cylinder into the inside of the arc groove, and then squeezing the sliding cylinder in the direction away from the support ring, so that the sliding cylinder can be restricted inside the arc groove, and then the second clamping plate can be well restricted inside the connecting groove.

[0019] Preferably, a positioning groove is provided on one side of the bottom of the sliding cylinder where it slides to the arc groove portion, a rubber block is provided on the inner wall of the positioning groove, and a side of the rubber block away from the positioning groove is fixedly connected to a side of the inner wall of the arc groove.

[0020] The effect achieved by the above components is that after the sliding cylinder is slid into the interior of the circular arc groove, the rubber block is squeezed into the interior of the positioning groove, so that the sliding cylinder can be well restricted inside the circular arc groove.

[0021] In the present invention, a recovery device is provided. When the recovery device is used, when the processed raw materials need to be transported out of the tubular furnace through the discharge pipe, the hot air generated inside the tubular furnace enters the interior of the fixed tube through the connecting tube, and then comes out from the air outlet. Because the interior of the water tank is full of cold water when the hot air moves inside the connecting tube, the hot air exchanges heat with the cold water inside the water tank when moving inside the fixed tube, which can increase the temperature of the cold water and thus can perform heat recovery to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the three-dimensional structure of a crystallization device for preparing lithium iron phosphate by a high-temperature solid phase method proposed by the present invention; Figure 2 The present invention provides a three-dimensional structural schematic diagram of a novel fixed tube; Figure 3 A three-dimensional structural schematic diagram of a novel sliding block proposed by the present invention; Figure 4 A schematic diagram of the three-dimensional structure of a novel cylinder proposed in the present invention; Figure 5 A three-dimensional structural schematic diagram of a novel drainage pipe proposed by the present invention; Figure 6 A three-dimensional structural schematic diagram of a novel inclined plate proposed in the present invention; Figure 7The present invention provides a three-dimensional structural schematic diagram of a novel sliding cylinder; Figure 8 The present invention provides a three-dimensional structural schematic diagram of a novel rubber block.

[0023] Legend: 1. Tube furnace; 2. Support legs; 3. Feed inlet; 4. Connecting cover; 5. Discharge pipe; 6. Solenoid valve; 7. Recovery device; 701. Connecting pipe; 702. Filter screen; 703. Water tank; 704. Fixed pipe; 705. Heat sink; 706. Water inlet; 707. Air outlet; 708. Baffle; 709. First air outlet; 710. Cylinder; 711. Second air outlet; 712. Notch; 713. Connecting plate; 714. Cylinder; 715. Circular groove; 716. 6. Fixed ring; 717. Semicircular groove; 718. Sliding block; 719. Rectangular groove; 720. First positioning plate; 721. First spring; 722. Drain pipe; 723. Valve; 8. Connecting device; 801. Support plate; 802. Support rod; 803. Inclined plate; 804. Support ring; 805. Damping rod; 806. Second spring; 807. Sliding cylinder; 808. Connecting groove; 809. Second positioning plate; 810. Circular groove; 811. Positioning groove; 812. Rubber block. DETAILED DESCRIPTION

[0024] Embodiment 1, as Figure 1-8 As shown, a crystallization device for preparing lithium iron phosphate by a high-temperature solid phase method, the bottom of a tubular furnace 1 is evenly fixedly connected with support legs 2, the top of the tubular furnace 1 is provided with a feed port 3, the top of the feed port 3 is provided with a connecting cover 4, the bottom of the tubular furnace 1 is provided with a discharge pipe 5, the inside of the discharge pipe 5 is provided with a solenoid valve 6, a recovery device 7 is provided on one side of the discharge pipe 5, and the bottom of the discharge pipe 5 is provided with a connecting device 8. When using the crystallization device, the raw materials for preparing lithium iron phosphate by a high-temperature fixed method are pretreated and placed in the inside of the tubular furnace 1, and are heated by the tubular furnace 1. After being heated to a certain degree, they are heated in the inside of the tubular furnace 1 for a period of time to crystallize the raw materials and react into lithium iron phosphate.

[0025] Reference Figures 2 to 5The recovery device 7 includes a connecting pipe 701, one side of the connecting pipe 701 is fixedly connected to the discharge pipe 5, the connecting pipe 701 and the discharge pipe 5 are communicated together, the inner wall of the connecting pipe 701 is fixedly connected with a filter screen 702, the end of the connecting pipe 701 away from the discharge pipe 5 is fixedly connected to a water tank 703, the inner wall of the water tank 703 is fixedly connected with a fixed pipe 704, one end of the fixed pipe 704 is arranged together with the connecting pipe 701, the fixed pipe 704 and the interior of the connecting pipe 701 are communicated together, an air outlet 707 is arranged on the top of the water tank 703, a water inlet 706 is arranged on the top of the water tank 703, a drain pipe 722 is arranged at the bottom of one side of the water tank 703, and a valve 723 is arranged on the inner wall of the drain pipe 722. When the recovery device 7 is used When the processed raw materials need to be transported out of the tube furnace 1 through the discharge pipe 5, the hot air generated in the tube furnace 1 enters the fixed tube 704 through the connecting pipe 701, and then comes out from the air outlet 707. Because the hot air moves in the connecting pipe 701, the inside of the water tank 703 is full of cold water, so that the hot air exchanges heat with the cold water in the water tank 703 when moving in the fixed tube 704, which can increase the temperature of the cold water and recover heat to a certain extent. The surface of the fixed tube 704 is evenly penetrated with heat dissipation plates 705, one end of the heat dissipation plate 705 is arranged in the fixed tube 704, and the end of the heat dissipation plate 705 away from the fixed tube 704 is arranged in the water tank 703 Because one end of the heat sink 705 is arranged inside the fixed pipe 704, and the other end is arranged inside the water tank 703, the heat sink 705 can increase the efficiency of heat exchange between hot air and cold water to a certain extent. The inner wall of the connecting pipe 701 is fixedly connected with a baffle 708, and the upper part of the baffle 708 is evenly provided with a first air outlet 709. The inner wall of the connecting pipe 701 is rotatably provided with a cylinder 710, and the upper part of the cylinder 710 is evenly provided with a second air outlet 711. A notch 712 is provided on the surface of the connecting pipe 701, and a connecting plate 713 is slidably provided on the inner wall of the notch 712. One end of the notch 712 and the cylinder 710, and the surface of the connecting pipe 701 is rotatably sleeved with a cylinder 714, and the inner wall of the cylinder 714 and the connecting plate 713 are away from each other. One end of the cylinder 710 is fixedly connected, and circular grooves 715 are evenly opened on the surface of the connecting pipe 701. A fixing ring 716 is rotatably provided on the inner wall of the circular groove 715. One end of the fixing ring 716 away from the circular groove 715 is fixedly connected to the inner wall of the cylinder 714. When it is necessary to let the hot air enter the water tank 703 through the connecting pipe 701, the cylinder 714 can be well restricted to rotate on the surface of the connecting pipe 701 by the fixing ring 716, and then the cylinder 714 can be manually controlled to rotate on the surface of the connecting pipe 701, and then the connecting plate 713 can be driven to slide on the inner wall of the notch 712. Because one end of the connecting plate 713 is fixedly connected to one side of the cylinder 710, the rotation of the cylinder 710 inside the connecting pipe 701 can be well controlled.In this way, the first air outlet 709 and the second air outlet 711 can be aligned, so that the hot air can enter the interior of the water tank 703 through the connecting pipe 701. A semicircular groove 717 is provided on one side of the water tank 703, and a sliding block 718 is slidably connected to the inner wall of the semicircular groove 717. The end of the sliding block 718 away from the semicircular groove 717 is fixedly connected to the end of the cylinder 714 away from the connecting pipe 701 and close to the water tank 703. A rectangular groove 719 is provided on the end of the water tank 703 close to the connecting pipe 701, and a first locking plate 720 is slidably connected to the inner wall of the rectangular groove 719. The first locking plate 720 is slidably sleeved on the surface of the sliding block 718 away from the semicircular groove 717. The inner wall of the rectangular groove 719 close to the water tank 703 is fixedly connected to the first spring 721. The end of the first spring 721 away from the rectangular groove 719 and The first clamping plate 720 is fixedly connected to one end of the rectangular groove 719. When the control cylinder 714 rotates on the surface of the connecting pipe 701, the sliding block 718 can be driven to slide on the inner wall of the semicircular groove 717. When the first air outlet 709 and the second air outlet 711 are aligned, the first clamping plate 720 is manually controlled to slide into the inside of the rectangular groove 719. In this way, the first clamping plate 720 can be sleeved on the surface of the sliding block 718. The first spring 721 is used to pull the first clamping plate 720 toward the inside of the rectangular groove 719, thereby well limiting the first clamping plate 720 on the surface of the sliding block 718. In this way, the sliding block 718 can be fixed inside the semicircular groove 717, thereby keeping the first air outlet 709 and the second air outlet 711 aligned, so that the hot air can pass through the connecting pipe 701 well.

[0026] Reference Figures 6 to 8The connecting device 8 includes a support plate 801, the top of the support plate 801 is fixedly connected to one end of the support leg 2, the bottom of the support plate 801 is evenly fixedly connected with a support rod 802, the inclined plate 803 is limited to the bottom of the support plate 801, the inclined plate 803 is set in the middle of the two support rods 802, and the inclined plate 803 is set at the bottom of the discharge pipe 5. When using the connecting device 8, the inclined plate 803 is set at the bottom of the discharge pipe 5, so that the processed raw materials can be moved away from the bottom of the discharge pipe 5 through the inclined plate 803, so that the processed raw materials can be easily transported out of the bottom of the tube furnace 1. The two support rods 802 are close to each other. A connecting groove 808 is provided on one side of the support plate 801, and a second clamping plate 809 is slidably connected to the inner wall of the connecting groove 808. The two second clamping plates 809 are fixedly connected to the side of the inclined plate 803 on the side away from the connecting groove 808. The top of the second clamping plate 809 is provided with an arc groove 810. The second clamping plate 809 is manually slid into the inside of the connecting groove 808, so that the inclined plate 803 can be well restricted in the middle of the two support rods 802, and then the inclined plate 803 can be restricted to the bottom of the discharge pipe 5. The surface of the support rod 802 is fixedly connected to the support ring 804, and the bottom of the support ring 804 is evenly fixedly connected A damping rod 805 is connected, and a sliding cylinder 807 is fixedly connected to the bottom of the damping rod 805. The sliding cylinder 807 is slidably sleeved on the surface of the support rod 802. A second spring 806 is sleeved on the surface of the damping rod 805. One end of the second spring 806 is fixedly connected to the bottom of the support ring 804. One end of the second spring 806 close to the damping rod 805 is fixedly connected to the top of the sliding cylinder 807. One end of the sliding cylinder 807 away from the damping rod 805 is slidably connected to the inner wall of the arc groove 810. The sliding cylinder 807 is slid into the interior of the arc groove 810, and then the second spring 806 is pressed in the direction away from the support ring 804 to press the sliding cylinder 810. 07, in this way, the sliding cylinder 807 can be restricted inside the circular arc groove 810, and then the second locking plate 809 can be well restricted inside the connecting groove 808. A positioning groove 811 is provided on one side of the part where the bottom of the sliding cylinder 807 slides to the circular arc groove 810, and a rubber block 812 is provided on the inner wall of the positioning groove 811. The side of the rubber block 812 away from the positioning groove 811 is fixedly connected to the side of the inner wall of the circular arc groove 810. After the sliding cylinder 807 slides into the interior of the circular arc groove 810, the rubber block 812 is squeezed into the interior of the positioning groove 811, which can well restrict the sliding cylinder 807 to the interior of the circular arc groove 810.

[0027] Working principle: when using the crystallization device, the raw materials for preparing lithium iron phosphate by the high-temperature fixing method are pretreated and placed inside the tubular furnace 1. After being heated to a certain degree by the tubular furnace 1, the raw materials are heated inside the tubular furnace 1 for a period of time to crystallize the raw materials and react into lithium iron phosphate. When using the recovery device 7, the cylinder 714 can be well restricted to rotate on the surface of the connecting tube 701 by the fixing ring 716, and then the cylinder 714 can be manually controlled to rotate on the surface of the connecting tube 701, and then the connecting plate 713 can be driven to slide on the inner wall of the notch 712. Because one end of the connecting plate 713 is fixedly connected to one side of the cylinder 710, the rotation of the cylinder 710 inside the connecting tube 701 can be well controlled. When the control When the cylinder 714 rotates on the surface of the connecting pipe 701, it can drive the sliding block 718 to slide on the inner wall of the semicircular groove 717. When the first air outlet 709 and the second air outlet 711 are aligned, the first clamping plate 720 is manually controlled to slide into the inside of the rectangular groove 719, so that the first clamping plate 720 can be sleeved on the surface of the sliding block 718, and the first clamping plate 720 is pulled toward the direction close to the inside of the rectangular groove 719 by the first spring 721, so that the first clamping plate 720 is well restricted on the surface of the sliding block 718, so that the sliding block 718 can be fixed in the inside of the semicircular groove 717, so that the first air outlet 709 and the second air outlet 711 are kept aligned, so that the hot air can pass through the connecting pipe 701 well. In this way, the hot air can pass through the connecting pipe 701 to enter the inside of the water tank 703. At this time, the hot air generated in the tube furnace 1 enters the inside of the fixed pipe 704 through the connecting pipe 701, and then comes out from the air outlet 707. Because the hot air moves in the connecting pipe 701, the inside of the water tank 703 is full of cold water, and the hot air exchanges heat with the cold water in the water tank 703 when moving in the fixed pipe 704. Because one end of the heat sink 705 is arranged in the inside of the fixed pipe 704, and the other end is arranged in the inside of the water tank 703, the heat exchange efficiency between the hot air and the cold water can be increased to a certain extent through the heat sink 705, which can increase the temperature of the cold water, and heat recovery can be performed to a certain extent. When the device 8 is installed, the second positioning plate 809 is manually slid into the interior of the connecting groove 808, and the sliding cylinder 807 is slid into the interior of the arc groove 810, and then the second spring 806 is pressed against the sliding cylinder 807 in the direction away from the support ring 804, so that the sliding cylinder 807 can be restricted in the interior of the arc groove 810. After the sliding cylinder 807 is slid into the interior of the arc groove 810, the rubber block 812 is pressed into the interior of the positioning groove 811, so that the sliding cylinder 807 can be well restricted in the interior of the arc groove 810, and then the second positioning plate 809 can be well restricted in the interior of the connecting groove 808, and then the inclined plate 803 can be well restricted in the middle of the two support rods 802, and then the inclined plate 803 can be restricted to the bottom of the discharge pipe 5.In this way, the processed raw materials can be easily transported out of the bottom of the tube furnace 1.

[0028] It should be noted that all damping rods in this case are retractable dampers that can absorb energy during the retraction process.

Claims

1. A crystallization device for preparing lithium iron phosphate by a high temperature solid phase method, characterized in that: The invention comprises a tubular furnace, wherein the bottom of the tubular furnace is evenly and fixedly connected with supporting legs, the top of the tubular furnace is provided with a feeding port, the top of the feeding port is provided with a connecting cover, the bottom of the tubular furnace is provided with a discharging pipe, the interior of the discharging pipe is provided with a solenoid valve, a recovery device is provided at one side of the discharging pipe, a connecting device is provided at the bottom of the discharging pipe, the recovery device comprises a connecting pipe, one side of the discharging pipe of the connecting pipe is fixedly connected, the connecting pipe and the discharging pipe are communicated together, a filter screen is fixedly connected to the inner wall of the connecting pipe, one end of the connecting pipe away from the discharging pipe is fixedly connected with a water tank, the inner wall of the water tank is fixedly connected with a fixing pipe, one end of the fixing pipe and the connecting pipe are arranged together, the interiors of the fixing pipe and the connecting pipe are communicated together, an air outlet is provided at the top of the water tank, a water inlet is provided at the top of the water tank, a drain pipe is provided at the bottom of one side of the water tank, and a valve is provided on the inner wall of the drain pipe.

2. The crystallization device for preparing lithium iron phosphate by a high temperature solid phase method according to claim 1, characterized in that: A heat sink is evenly inserted through the surface of the fixed pipe, one end of the heat sink is arranged inside the fixed pipe, and one end of the heat sink away from the inside of the fixed pipe is arranged inside the water tank.

3. The crystallization device for preparing lithium iron phosphate by a high temperature solid phase method according to claim 1, characterized in that: The inner wall of the connecting tube is fixedly connected with a baffle, and the upper part of the baffle is evenly provided with a first air outlet, the inner wall of the connecting tube is rotatably provided with a cylinder, and the upper part of the cylinder is evenly provided with a second air outlet, a notch is provided on the surface of the connecting tube, and a connecting plate is slidably provided on the inner wall of the notch, one end of the notch and the cylinder, and the surface of the connecting tube is rotatably sleeved with a cylinder, the inner wall of the cylinder and the end of the connecting plate away from the cylinder are fixedly connected, the surface of the connecting tube is evenly provided with circular grooves, and the inner wall of the circular groove is rotatably provided with a fixing ring, and the end of the fixing ring away from the circular groove is fixedly connected to the inner wall of the cylinder.

4. The crystallization device for preparing lithium iron phosphate by a high temperature solid phase method according to claim 1, characterized in that: A semicircular groove is provided on one side of the water tank, and a sliding block is slidably connected to the inner wall of the semicircular groove, and an end of the sliding block away from the semicircular groove is fixedly connected to an end of the cylinder away from the connecting pipe and close to the water tank. A rectangular groove is provided on the end of the water tank close to the connecting pipe, and a first clamping plate is slidably connected to the inner wall of the rectangular groove. The first clamping plate is slidably sleeved on the surface of the sliding block away from the semicircular groove, and a first spring is fixedly connected to a side of the inner wall of the rectangular groove close to the water tank, and an end of the first spring away from the rectangular groove is fixedly connected to an end of the first clamping plate close to the rectangular groove.

5. The crystallization device for preparing lithium iron phosphate by a high temperature solid phase method according to claim 1, characterized in that: The connecting device includes a support plate, the top of the support plate is fixedly connected to one end of the support leg, the bottom of the support plate is evenly fixedly connected to a support rod, the inclined plate is limited to the bottom of the support plate, the inclined plate is arranged in the middle of the two support rods, and the inclined plate is arranged at the bottom of the discharge pipe.

6. A crystallization device for preparing lithium iron phosphate by a high temperature solid phase method according to claim 5, characterized in that: The two support rods are provided with a connecting groove on one side close to the support plate, and the inner wall of the connecting groove is slidably connected with a second clamping plate. The two second clamping plates are fixedly connected to the side of the inclined plate on the side away from the connecting groove, and the top of the second clamping plate is provided with an arc groove.

7. A crystallization device for preparing lithium iron phosphate by a high temperature solid phase method according to claim 5, characterized in that: A support ring is fixedly connected to the surface of the support rod, a damping rod is evenly fixedly connected to the bottom of the support ring, a sliding cylinder is fixedly connected to the bottom of the damping rod, the sliding cylinder is slidably sleeved on the surface of the support rod, a second spring is sleeved on the surface of the damping rod, one end of the second spring is fixedly connected to the bottom of the support ring, one end of the second spring close to the damping rod is fixedly connected to the top of the sliding cylinder, and one end of the sliding cylinder away from the damping rod is slidably connected to the inner wall of the arc groove.

8. A crystallization device for preparing lithium iron phosphate by a high temperature solid phase method according to claim 7, characterized in that: A positioning groove is provided on one side of the bottom of the sliding cylinder where it slides to the arc groove.

9. A crystallization device for preparing lithium iron phosphate by a high temperature solid phase method according to claim 8, characterized in that: The inner wall of the positioning groove is provided with a rubber block, and a side of the rubber block away from the positioning groove is fixedly connected to a side of the inner wall of the arc groove.

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