Online dispersing device for lithium iron phosphate pulping

Abstract

The utility model discloses an on-line dispersing device for lithium iron phosphate pulping, and relates to the technical field of lithium iron phosphate pulping, the on-line dispersing device comprises an on-line dispersing machine, the on-line dispersing machine comprises a rack, a barrel, a plurality of feeding pipelines, a plurality of discharging pipelines and a plurality of dispersing discs, the barrel is arranged on the rack, the feeding pipelines are arranged on the top of the barrel, and the discharging pipelines are arranged on the top of the barrel. A discharging pipeline is arranged on the side wall of the barrel, the feeding pipeline is connected with a feeding pipe, one end of the feeding pipe is connected with a raw material measuring bin, a dispersing shaft is arranged in the barrel, the dispersing discs are evenly distributed on the dispersing shaft, a motor is arranged at the top of the barrel, and the top end of the dispersing shaft penetrates out of the barrel and is connected with the driving end of the motor. The dispersion disc in the online dispersion machine is unique in design, the lithium iron phosphate slurry is subjected to multi-dimensional dispersion, compared with a homogenizing pump, the dispersion force is stronger, the action range is wider, a motor does not need to operate at too high power, the production cost is effectively saved, and the energy utilization efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of lithium iron phosphate pulping technology, specifically an online dispersion device for lithium iron phosphate pulping. Background Technology

[0002] In the lithium iron phosphate slurry preparation process, a homogenizing pump is typically used as an online dispersion device. The homogenizing pump has a special rotor and stator structure. The working principle of the homogenizing pump is based on the shearing action of high-pressure liquid. After lithium iron phosphate raw materials, solvents and various additives are mixed in a certain proportion to form a preliminary slurry, it is transported to the feed port of the homogenizing pump through pipeline. Inside the pump, the slurry is driven by the centrifugal force generated by the high-speed rotation of the rotor and quickly passes through the narrow gap between the rotor and stator. The slurry is subjected to strong shearing force, impact force and high-frequency pressure fluctuation, which breaks up the agglomerates of lithium iron phosphate particles and achieves uniform dispersion of particles in the slurry.

[0003] While homogenizing pumps can disperse lithium iron phosphate slurry to some extent, their internal structure and operating methods limit their ability to efficiently disperse nano- or submicron-sized lithium iron phosphate particles. In lithium iron phosphate slurry preparation, particle agglomeration is severe. The limited shear force and action time of homogenizing pumps prevent complete breaking down of these agglomerates, resulting in a large number of particle aggregates remaining in the slurry. To achieve better dispersion, homogenizing pumps often need to operate at high pressures and speeds, requiring the motor to consume significant amounts of electrical energy. High-pressure operation increases frictional losses between internal components. Furthermore, the materials and structural design of homogenizing pumps lack sufficient wear resistance and impact resistance to withstand the long-term scouring of high-hardness particles.

[0004] Lithium iron phosphate particles have a certain degree of hardness. When passing through the narrow gap inside the homogenizing pump, they will cause strong scouring and wear on the rotor, stator, and other components of the pump body. Wear not only shortens the service life of the equipment, but also affects the continuity of production and increases maintenance costs due to frequent replacement of vulnerable parts. Utility Model Content

[0005] The purpose of this invention is to provide an online dispersion device for lithium iron phosphate slurry preparation, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An online dispersion device for lithium iron phosphate slurry includes an online disperser. The online disperser includes a frame, a cylinder, a feed pipe, a discharge pipe, and dispersion discs. The cylinder is mounted on the frame. Multiple feed pipes are located at the top of the cylinder, and a discharge pipe is located on the side wall of the cylinder. The feed pipes are connected to a feed tube, one end of which is connected to a raw material metering bin. A dispersion shaft is located inside the cylinder, and dispersion discs are evenly distributed on the dispersion shaft. A motor is located at the top of the cylinder. The top of the dispersion shaft extends out of the cylinder and is connected to the drive end of the motor. The motor drives the dispersion discs to rotate by cooperating with the dispersion shaft.

[0008] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0009] In one alternative: the discharge pipe is connected to a discharge tube, one end of which is connected to a dispersion tank, the dispersion tank is connected to a pneumatic diaphragm pump and a nano-sand mill, and a rotary valve is installed on the feed pipe.

[0010] In one alternative: the exterior of the cylinder is provided with an observation window and a cooling system.

[0011] In one alternative: both the feed pipe and the discharge pipe are equipped with connecting flanges on their exteriors.

[0012] In one alternative: the online disperser is equipped with multiple casters at its bottom.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. The online dispersion device for lithium iron phosphate slurry consists of an online disperser and inlet / outlet pipes. The dispersion disc inside the online disperser has a unique design that generates a more complex and uniform flow field when rotating at high speed, thus dispersing the lithium iron phosphate slurry in multiple dimensions. Compared with a homogenizing pump, it has stronger dispersion force and a wider range of action, and can more effectively break up particle agglomerates to achieve uniform dispersion of nano- or submicron-sized particles.

[0015] 2. The online disperser optimizes the dispersion structure and flow field design, enabling efficient dispersion of slurry with lower energy consumption. The rational layout and movement of the dispersion discs reduce ineffective energy loss, and the motor does not need to operate at excessive power. Under the same production scale and dispersion requirements, the online disperser consumes less energy than the homogenizing pump, effectively saving production costs and improving energy utilization efficiency.

[0016] 3. The internal structure of the online disperser is relatively simple. Key components such as the dispersing disc are made of high-hardness, wear-resistant materials, resulting in relatively small impact and wear between the slurry and the equipment parts. This leads to high operational stability, a low failure rate, reduced maintenance frequency and time, lower maintenance costs, and ensures the continuity and stability of production. Attached Figure Description

[0017] Figure 1 A schematic diagram of an online dispersion device for lithium iron phosphate slurry preparation.

[0018] Figure 2 A flowchart illustrating the use of an online dispersion device for lithium iron phosphate slurry preparation.

[0019] Figure 3 A flowchart for preparing lithium iron phosphate slurry.

[0020] Figure label annotations: 1-Online disperser, 2-Frame, 3-Cylinder, 4-Feed pipe, 5-Feed tube, 7-Discharge pipe, 8-Rotary valve, 9-Raw material metering bin, 10-Dispersion tank, 11-Nano sand mill, 12-Pneumatic diaphragm pump. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. In the drawings and description, similar or identical parts are referred to by the same reference numerals, and in practical applications, the shape, thickness, or height of each component may be enlarged or reduced. The embodiments listed in this utility model are merely illustrative and not intended to limit the scope of this utility model. Any obvious modifications or changes made to this utility model do not depart from its spirit and scope.

[0022] In one embodiment, such as Figure 1-3 As shown, an online dispersion device for lithium iron phosphate slurry includes an online disperser 1. The online disperser 1 consists of a frame 2, a cylinder 3, a feed pipe 4, a discharge pipe 7, and dispersion discs. The cylinder 3 is mounted on the frame 2. Multiple feed pipes 4 are mounted on the top of the cylinder 3. The discharge pipe 7 is mounted on the side wall of the cylinder 3. The feed pipes 4 are connected to feed tubes 5. One end of the feed tubes 5 is connected to a raw material metering bin 9. A dispersion shaft is mounted inside the cylinder 3. Dispersion discs are evenly distributed on the dispersion shaft. A motor is mounted on the top of the cylinder 3. The top of the dispersion shaft extends out of the cylinder 3 and is connected to the drive end of the motor. The motor drives the dispersion discs to rotate by cooperating with the dispersion shaft.

[0023] An online dispersion device for lithium iron phosphate slurry is used to replace a homogenizing pump. The motor is installed on the top of the cylinder 3 and connected to the dispersion shaft via a coupling. The dispersion shaft runs through the inside of the cylinder 3, and dispersion discs are evenly distributed on the dispersion shaft. The feed pipe 4 is connected to one side of the cylinder 3 to input the mixed lithium iron phosphate slurry into the cylinder 3. The discharge pipe 7 is located on the other side of the cylinder to output the dispersed slurry. The cylinder can be equipped with structures such as guide plates as needed to optimize the flow path of the slurry in the cylinder. As an example, the left, right, up, and down positions of the various components shown in the attached drawings are only one arrangement method, and the specific positions are set according to specific needs.

[0024] In one embodiment, such as Figure 1-2 As shown, the discharge pipe 7 is connected to the discharge pipe 6, one end of the discharge pipe 6 is connected to the divergence tank 10, the divergence tank 10 is connected to the pneumatic diaphragm pump 12 and the nano-sand mill 11, and the feed pipe 5 is equipped with a rotary valve 8.

[0025] In one embodiment, such as Figure 1 As shown, the exterior of the cylinder 3 is equipped with an observation window and a cooling system.

[0026] In one embodiment, such as Figure 1 As shown, both the feed pipe 4 and the discharge pipe 7 are provided with connecting flanges 13 on their exteriors.

[0027] In one embodiment, such as Figure 1 As shown, the bottom of the online disperser 1 is equipped with multiple casters 14.

[0028] The above embodiments of this utility model provide an online dispersion device for lithium iron phosphate slurry preparation, with the following steps:

[0029] 1. Mix lithium iron phosphate raw materials, solvents and additives thoroughly in a mixing tank according to the predetermined formula to prepare a slurry to be dispersed;

[0030] 2. The slurry is transported to the cylinder 3 of the online disperser 1 through the feed pipe 4. During the feeding process, the flow rate of the feed pump can be adjusted according to the characteristics of the slurry and production needs to control the speed at which the slurry enters the disperser.

[0031] 3. Start the motor. The motor drives the dispersing shaft to rotate at high speed. The dispersing disc on the dispersing shaft rotates at high speed. The high-speed rotating dispersing disc causes the slurry in the cylinder 3 to generate strong circumferential motion and radial flow. At the same time, the blades of the dispersing disc generate high-speed shearing, impact and dispersing effects on the slurry.

[0032] 4. During the dispersion process, the dispersion of the slurry can be observed through the observation window on the cylinder 3. The temperature, pressure and other parameters of the slurry can be monitored in real time by the sensor installed on the pipeline. If the temperature is found to be too high, the cooling system can be turned on to cool the cylinder 3 to prevent the heat generated during the dispersion process from affecting the quality of the slurry.

[0033] 5. The fully dispersed slurry flows out from the discharge pipe 7 and enters the subsequent pulping process to complete the online dispersion process.

[0034] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. An online dispersion device for lithium iron phosphate slurry preparation, comprising an online disperser, characterized in that, The online disperser includes a frame, a cylinder, a feed pipe, a discharge pipe, and a dispersing disc. The cylinder is mounted on the frame, and multiple feed pipes are located on the top of the cylinder. A discharge pipe is located on the side wall of the cylinder. The feed pipes are connected to a feed tube, one end of which is connected to a raw material metering bin. A dispersing shaft is located inside the cylinder, and the dispersing discs are evenly distributed on the dispersing shaft. A motor is located on the top of the cylinder, and the top of the dispersing shaft extends out of the cylinder and is connected to the drive end of the motor. The motor drives the dispersing discs to rotate by cooperating with the dispersing shaft.

2. The online dispersion device for lithium iron phosphate slurry preparation according to claim 1, characterized in that, The discharge pipe is connected to a discharge pipe, one end of which is connected to a dispersion tank. The dispersion tank is connected to a pneumatic diaphragm pump and a nano-sand mill. A rotary valve is installed on the feed pipe.

3. The online dispersion device for lithium iron phosphate slurry preparation according to claim 1, characterized in that, The exterior of the cylinder is equipped with an observation window and a cooling system.

4. The online dispersion device for lithium iron phosphate slurry preparation according to claim 1, characterized in that, Both the feed pipe and the discharge pipe are equipped with connecting flanges on the outside.

5. The online dispersion device for lithium iron phosphate slurry preparation according to claim 4, characterized in that, The online disperser is equipped with multiple casters at its bottom.

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