Automatic homogenizing and stirring tank for iron phosphate powder
By employing a three-layer stirring shaft alternating in opposite directions in the iron phosphate powder mixing tank, the problems of powder aggregation and electrostatic adsorption agglomeration during the stirring process are solved, achieving efficient and uniform mixing and shortening the mixing time.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-29
- Publication Date
- 2026-03-20
AI Technical Summary
Existing iron phosphate powder mixing tanks are prone to powder aggregation on the tank wall during the mixing process, forming an 'inefficient zone' in the central area, resulting in poor homogenization. In addition, iron phosphate powder is prone to agglomeration due to electrostatic adsorption, leading to uneven component distribution.
The design employs a three-layer stirring shaft, with each layer having an opposite stirring force direction, forming an alternating reverse shear force field. Through multi-directional vortex and dynamic direction switching, the flow inertia of the powder is broken, promoting uniform dispersion of particles.
It achieves efficient and uniform mixing of iron phosphate powder, shortens mixing time, eliminates dead zones, and improves component uniformity and anti-agglomeration effect.
Smart Images
Figure CN224009673U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of iron phosphate production, especially relates to a kind of automatic homogenization stirring tank of iron phosphate powder. BACKGROUND
[0002] Iron phosphate powder is an important inorganic material, its chemical formula is FePO4, usually exists in powder form, with stable crystal structure, high temperature resistance, strong oxidation resistance.Common form includes anhydrous (FePO4) and dihydrate (FePO4·2H2O), the latter is often used in lithium ion battery cathode material precursor.
[0003] In the production and processing of iron phosphate powder, homogenization stirring is the key step to ensure material performance, mainly used to solve the following problems: poor flowability, micron / nanometer level particles are easy to agglomerate due to static electricity, van der waals force, form agglomerate, leading to uneven composition distribution;Density difference, if there is density or particle size difference between batches of raw materials, it may be stratified when standing (such as large particles sinking);Hygroscopicity, part of iron phosphate powder is easy to absorb moisture and form agglomerate, which needs to be broken by stirring.The existing iron phosphate powder stirring tank mostly adopts one-way stirring, and the powder is easy to gather to the tank wall under the action of centrifugal force, forming a "low efficiency area" in the center, thereby affecting the final homogenization effect. SUMMARY
[0004] The utility model aims at solving the shortcomings in prior art, and provides an automatic homogenization stirring tank of iron phosphate powder.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:
[0006] An automatic homogenization stirring tank of iron phosphate powder, comprising: a stirring tank, a device chamber is provided at the top of the stirring tank, a first stirring shaft is vertically penetrated and rotationally connected to the top of the stirring tank, a second stirring shaft is vertically provided outside the first stirring shaft in the stirring tank, a third stirring shaft is vertically provided outside the second stirring shaft in the stirring tank, first, second and third stirring blades are respectively welded to the outer periphery of the first, second and third stirring shafts;
[0007] A driving mechanism is used to drive the first, second and third stirring shafts to rotate in opposite directions.
[0008] As a further technical scheme of the utility model, a controller is fixedly installed on one side of the stirring tank, a discharge port is formed in the bottom of the stirring tank, an electric valve is installed on the discharge port, and three supporting legs are vertically welded along the circumference at the bottom of the stirring tank.
[0009] As a further technical scheme of the utility model, the top side of the stirring tank is equipped with a feeding channel, the top of the feeding channel is covered with a top cover, and the feeding channel penetrates through the equipment chamber and is in communication with the inside of the stirring tank.
[0010] As a further technical scheme of the utility model, the second stirring shaft and the third stirring shaft are both provided with multiple ones, the multiple second stirring shafts are uniformly distributed along the circumference outside the first stirring shaft, the multiple third stirring shafts are uniformly distributed along the circumference outside the second stirring shaft, and the top ends of the multiple second stirring shafts and third stirring shafts all extend into the inside of the equipment chamber and are rotationally connected with the equipment chamber.
[0011] As a further technical scheme of the utility model, the first stirring blade, the second stirring blade and the third stirring blade are all provided with multiple ones, and the multiple first stirring blades, the second stirring blades and the third stirring blades are respectively uniformly distributed along the periphery of the first stirring shaft, the second stirring shaft and the third stirring shaft, and the first stirring blade, the second stirring blade and the third stirring blade are vertically staggered.
[0012] As a further technical scheme of the utility model, the driving mechanism comprises a rotary motor, an L-shaped mounting plate is welded on the top side of the stirring tank, the rotary motor is vertically fixedly installed at the bottom of the L-shaped mounting plate, a large disc is fixedly installed at the output end of the rotary motor, a circular groove is formed at the bottom of the large disc, a small disc is welded at the center of the circular groove, multiple inner protruding teeth are uniformly welded on part of the inner wall of the circular groove, multiple outer protruding teeth are uniformly welded on part of the outer periphery of the small disc, a pinion is arranged in the circular groove, and the pinion is in mesh with the multiple inner protruding teeth and the multiple outer protruding teeth in sequence.
[0013] The rotary motor is started to drive the large disc to rotate forward, the large disc drives the small disc to rotate forward, the multiple inner protruding teeth on the inner wall of the circular groove first mesh with the pinion to drive the pinion to rotate forward, and the pinion drives the first stirring shaft to rotate forward; when the multiple inner protruding teeth and the pinion are meshed, the multiple outer protruding teeth on the outer periphery of the small disc mesh with the pinion again to drive the pinion to rotate reversely, the pinion drives the first stirring shaft to rotate reversely, and the large disc and the small disc rotate all the time, so as to drive the first stirring shaft to reciprocatingly rotate forward and reversely.
[0014] As a further technical scheme of the utility model, the first stirring shaft is welded at the center of the pinion, a first gear is welded above the first stirring shaft, multiple second gears are welded above the multiple second stirring shafts, a third gear is welded above one of the third stirring shafts, the multiple second gears are all in mesh with the first gear, the third gear is in mesh with one of the second gears, a belt is connected between the adjacent two third stirring shafts, and the first gear, the second gear, the third gear and the belt are all located in the inside of the equipment chamber.
[0015] The first stirring shaft drives the plurality of second stirring shafts to rotate reversely through the meshing of the first gear and the second gear, one of the second stirring shafts drives one of the third stirring shafts to rotate forwardly through the meshing of the second gear and the third gear, and one of the third stirring shafts drives other third stirring shafts to rotate forwardly through the plurality of belts.
[0016] The present application has the advantages that:
[0017] 1. The inside of the stirring tank has three layers of stirring force from inside to outside, the directions of each layer of stirring force are opposite, forming an alternating reverse shear force field, forcing the material to generate multi-directional vortex in the radial direction and axial direction at the same time, breaking the "laminar solidification" phenomenon of one-way stirring.
[0018] 2. The stirring directions of the three layers of stirring force are alternately switched in positive and negative directions, the dynamic direction switching breaks the material flow inertia through bidirectional shear force, forcing the powder to diffuse in different directions and eliminate dead angles, which can more evenly disperse the particle agglomeration, especially for the problem of electrostatic adsorption and caking of iron phosphate powder, and the direction switching causes the change of turbulent intensity, promotes the synergistic effect of convection mixing (macroscopic homogenization) and diffusion mixing (microscopic homogenization), and shortens the mixing time. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 A structural schematic view of the automatic homogenization stirring tank for iron phosphate powder is provided for the present application;
[0020] Figure 2 A sectional view structural schematic view of the automatic homogenization stirring tank for iron phosphate powder is provided for the present application;
[0021] Figure 3 A partial top view structural schematic view of the automatic homogenization stirring tank for iron phosphate powder is provided for the present application;
[0022] Figure 4 A partial bottom view structural schematic view of the automatic homogenization stirring tank for iron phosphate powder is provided for the present application;
[0023] Figure 5 An inside bottom view structural schematic view of the automatic homogenization stirring tank for iron phosphate powder is provided for the present application.
[0024] In the figure: 1, large disc; 2, first stirring shaft; 3, feeding channel; 4, controller; 5, stirring tank; 6, supporting leg; 7, discharge port; 8, L-shaped mounting plate; 9, rotating motor; 10, first gear; 11, third stirring shaft; 12, belt; 13, equipment chamber; 14, second gear; 15, second stirring shaft; 16, third gear; 17, third stirring blade; 18, pinion; 19, inner protruding tooth; 20, first stirring blade; 21, outer protruding tooth; 22, small disc; 23, circular groove; 24, second stirring blade. DETAILED DESCRIPTION
[0025] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.
[0026] Please refer to the accompanying drawings Figure 1 - the accompanying drawings Figure 5 The utility model provides a kind of automatic homogenization stirring tank of iron phosphate powder, it include: stirring tank 5, equipment chamber 13 is equipped in the top of stirring tank 5, the top of stirring tank 5 is vertically penetrated and is rotationally connected with first stirring shaft 2, second stirring shaft 15 is vertically arranged in the outside of first stirring shaft 2 in stirring tank 5, third stirring shaft 11 is vertically arranged in the outside of second stirring shaft 15 in stirring tank 5, the outer periphery of first stirring shaft 2, second stirring shaft 15 and third stirring shaft 11 is respectively welded with first stirring blade 20, second stirring blade 24 and third stirring blade 17;
[0027] Driving mechanism, driving mechanism is used to drive first stirring shaft 2, second stirring shaft 15 and third stirring shaft 11 reciprocating positive and negative rotation.
[0028] Please refer to the accompanying drawings Figure 1 In a preferred embodiment, controller 4 is fixedly installed on one side of the outside of stirring tank 5, discharge port 7 is opened in the bottom of stirring tank 5, electric valve is installed on discharge port 7, and three supporting legs 6 are vertically welded along the circumference in the bottom of stirring tank 5.
[0029] Controller 4 controls the opening and closing and work of all electrical equipment, opens electric valve and discharges homogenized iron phosphate powder through discharge port 7, and supporting leg 6 provides support for stirring tank 5.
[0030] Please refer to the accompanying drawings Figures 1-2 In a preferred embodiment, feeding channel 3 is arranged on one side of the top of stirring tank 5, the top of feeding channel 3 is covered with top cover, feeding channel 3 penetrates equipment chamber 13 and is communicated with the inside of stirring tank 5 at the bottom.
[0031] Open top cover and add iron phosphate powder into the inside of stirring tank 5 from feeding channel 3.
[0032] Please refer to the accompanying drawings Figures 2-3In a preferred embodiment, the second stirring shaft 15 and the third stirring shaft 11 are each provided with a plurality of second stirring shafts 15 which are evenly distributed along the circumference outside the first stirring shaft 2, and a plurality of third stirring shafts 11 which are evenly distributed along the circumference outside the second stirring shaft 15, and the top ends of the plurality of second stirring shafts 15 and the third stirring shafts 11 are all extended into the equipment chamber 13 and are rotationally connected with the equipment chamber 13.
[0033] Please refer to the accompanying drawings Figures 2-3 In a preferred embodiment, the first stirring blade 20, the second stirring blade 24 and the third stirring blade 17 are each provided with a plurality of first stirring blades 20, second stirring blades 24 and third stirring blades 17 which are evenly distributed along the circumference of the first stirring shaft 2, the second stirring shaft 15 and the third stirring shaft 11 respectively, and the first stirring blade 20, the second stirring blade 24 and the third stirring blade 17 are vertically staggered.
[0034] Please refer to the accompanying drawings Figure 1 And 4 In a preferred embodiment, the driving mechanism includes a rotary motor 9, an L-shaped mounting plate 8 is welded on one side of the top of the stirring tank 5, the rotary motor 9 is vertically fixedly installed at the bottom of the L-shaped mounting plate 8, a large disc 1 is fixedly installed at the output end of the rotary motor 9, and a circular groove 23 is formed at the bottom of the large disc 1.
[0035] The L-shaped mounting plate 8 provides support and fixation for the rotary motor 9.
[0036] Please refer to the accompanying drawings Figure 1 And 4 In a preferred embodiment, a small disc 22 is welded at the center of the circular groove 23, a plurality of inner protrusions 19 are evenly welded on part of the inner wall of the circular groove 23, a plurality of outer protrusions 21 are evenly welded on part of the outer circumference of the small disc 22, a small gear 18 is arranged in the circular groove 23, and the small gear 18 is in meshing engagement with the plurality of inner protrusions 19 and the plurality of outer protrusions 21 in sequence.
[0037] Please refer to the accompanying drawings Figures 2-3 In a preferred embodiment, the first stirring shaft 2 is welded at the center of the small gear 18, a first gear 10 is welded above the first stirring shaft 2, a second gear 14 is welded above each of the plurality of second stirring shafts 15, and a third gear 16 is welded above one of the third stirring shafts 11.
[0038] Please refer to the accompanying drawings Figures 2-3 In a preferred embodiment, the plurality of second gears 14 are all in meshing engagement with the first gear 10, the third gear 16 is in meshing engagement with one of the second gears 14, and a belt 12 is connected between the adjacent two third stirring shafts 15, and the first gear 10, the second gear 14, the third gear 16 and the belt 12 are all located inside the equipment chamber 13.
[0039] From the above description, it can be seen that the above embodiments of this utility model achieve the following technical effects: The rotating motor 9 is started to drive the large disc 1 to rotate forward, the large disc 1 drives the small disc 22 to rotate forward, the multiple inner protruding teeth 19 on the inner wall of the circular groove 23 first mesh with the small gear 18 to drive the small gear 18 to rotate forward, the small gear 18 drives the first stirring shaft 2 to rotate forward, the first stirring shaft 2 drives the first stirring blade 20 to rotate forward, and when the first stirring shaft 2 rotates forward, the meshing action of the first gear 10 and the second gear 14 drives multiple second stirring shafts 15 to rotate in the opposite direction. The second stirring blade 24 is driven to rotate in the opposite direction. One of the second stirring shafts 15 drives one of the third stirring shafts 11 to rotate in the forward direction through the meshing of the second gear 14 and the third gear 16. One of the third stirring shafts 11 drives the other third stirring shafts 11 to rotate in the forward direction in sequence through multiple belts 12. The third stirring shaft 11 drives the third stirring blade 17 to rotate in the forward direction. The mixing tank 5 has three layers of stirring force from the inside to the outside. The direction of each layer of stirring force is opposite, forming an alternating and opposite shear force field, which forces the material to generate multi-directional vortexes in the radial and axial directions at the same time, breaking the "laminar solidification" phenomenon of unidirectional stirring.
[0040] When the multiple internal protruding teeth 19 and the pinion 18 have finished meshing, the multiple external protruding teeth 21 on the outer periphery of the small disc 22 mesh with the pinion 18, causing the pinion 18 to rotate in the opposite direction. The pinion 18 then drives the first stirring shaft 2 to rotate in the opposite direction. The large disc 1 and the small disc 22 continue to rotate, thus driving the first stirring shaft 2 to rotate back and forth in both directions. Similarly, the second stirring shaft 15 rotates back and forth in both directions, and the third stirring shaft 11 rotates back and forth in both directions. The stirring directions of the three layers of stirring force alternately switch between forward and reverse in sequence. The dynamic direction switching breaks the material flow inertia through bidirectional shear force, forcing the powder to diffuse in different directions and eliminating dead corners. This can more evenly disperse particle agglomeration, especially addressing the electrostatic adsorption and agglomeration problem of iron phosphate powder. Furthermore, the direction switching causes changes in turbulence intensity, promoting the synergistic effect of convective mixing (macroscopic homogenization) and diffusion mixing (microscopic homogenization), and shortening the mixing time.
[0041] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.
[0042] The utility model aims at all such replacement, modification and variation falling into the broad scope of the claim. Therefore, any omission, modification, equivalent replacement, improvement and the like made in the spirit and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. An automatic homogenizing and mixing tank for ferric phosphate powder, characterized in that, include: A mixing tank (5) is provided with an equipment chamber (13) at the top of the mixing tank (5). A first stirring shaft (2) is vertically connected to the top of the mixing tank (5) and rotated. A second stirring shaft (15) is vertically provided outside the first stirring shaft (2) inside the mixing tank (5). A third stirring shaft (11) is vertically provided outside the second stirring shaft (15) inside the mixing tank (5). A first stirring blade (20), a second stirring blade (24), and a third stirring blade (17) are respectively welded to the outer periphery of the first stirring shaft (2), the second stirring shaft (15), and the third stirring shaft (11). The driving mechanism is used to drive the first stirring shaft (2), the second stirring shaft (15) and the third stirring shaft (11) to reciprocate in both directions.
2. The automatic homogenizing and mixing tank for ferric phosphate powder according to claim 1, characterized in that, A controller (4) is fixedly installed on one side of the outside of the mixing tank (5). A discharge port (7) is opened at the bottom of the mixing tank (5). An electric valve is installed on the discharge port (7). Three support legs (6) are evenly and vertically welded along the circumference at the bottom of the mixing tank (5).
3. The automatic homogenizing and mixing tank for ferric phosphate powder according to claim 2, characterized in that, The mixing tank (5) has a feeding channel (3) on one side of its top. The top of the feeding channel (3) is covered with a top cover. The feeding channel (3) passes through the equipment room (13) and its bottom is connected to the inside of the mixing tank (5).
4. The automatic homogenizing and mixing tank for ferric phosphate powder according to claim 1, characterized in that, The second stirring shaft (15) and the third stirring shaft (11) are provided in multiples. The multiple second stirring shafts (15) are evenly distributed around the outside of the first stirring shaft (2) along the circumference. The multiple third stirring shafts (11) are evenly distributed around the outside of the second stirring shafts (15) along the circumference. The top ends of the multiple second stirring shafts (15) and the third stirring shafts (11) extend into the equipment chamber (13) and are rotatably connected to the equipment chamber (13).
5. The automatic homogenizing and mixing tank for ferric phosphate powder according to claim 4, characterized in that, The first stirring blade (20), the second stirring blade (24) and the third stirring blade (17) are provided in multiples, and the multiple first stirring blades (20), second stirring blades (24) and third stirring blades (17) are evenly distributed on the outer periphery of the first stirring shaft (2), the second stirring shaft (15) and the third stirring shaft (11), respectively, and the first stirring blades (20), second stirring blades (24) and third stirring blades (17) are arranged in a vertically staggered manner.
6. The automatic homogenizing and mixing tank for ferric phosphate powder according to claim 5, characterized in that, The driving mechanism includes a rotary motor (9), an L-shaped mounting plate (8) is welded to one side of the top of the mixing tank (5), the rotary motor (9) is vertically fixed to the bottom of the L-shaped mounting plate (8), a large disc (1) is fixedly installed at the output end of the rotary motor (9), and a circular groove (23) is opened at the bottom of the large disc (1).
7. The automatic homogenizing and mixing tank for ferric phosphate powder according to claim 6, characterized in that, A small disc (22) is welded to the center of the circular groove (23). A plurality of internal protruding teeth (19) are uniformly welded to a portion of the inner wall of the circular groove (23). A plurality of external protruding teeth (21) are uniformly welded to a portion of the outer periphery of the small disc (22). A small gear (18) is provided inside the circular groove (23). The small gear (18) meshes with a plurality of internal protruding teeth (19) and a plurality of external protruding teeth (21) in sequence.
8. The automatic homogenizing and mixing tank for ferric phosphate powder according to claim 7, characterized in that, The top of the first stirring shaft (2) is welded to the center of the pinion (18). A first gear (10) is welded above the first stirring shaft (2). A second gear (14) is welded above each of the multiple second stirring shafts (15), and a third gear (16) is welded above one of the third stirring shafts (11).
9. The automatic homogenizing and mixing tank for ferric phosphate powder according to claim 8, characterized in that, Multiple second gears (14) mesh with the first gear (10), the third gear (16) meshes with one of the second gears (14), and a belt (12) connects two adjacent third stirring shafts (11). The first gear (10), the second gear (14), the third gear (16) and the belt (12) are all located inside the equipment chamber (13).