Homogenizing tank for mixing raw materials of lithium iron phosphate battery

Abstract

The utility model discloses a homogenizing tank for mixing raw materials of a lithium iron phosphate battery, and belongs to the field of raw material mixing. A homogenizing tank for mixing lithium iron phosphate battery raw materials comprises a tank body, a sleeve is rotationally connected into the tank body, a spiral plate is fixedly connected to the sleeve, a transmission rod is rotationally connected into the tank body, stirring blades are arranged on the outer wall of the transmission rod and are in a wing shape, the stirring blades are arranged above the guide end of the spiral plate, and the rotation direction of the transmission rod is opposite to that of the sleeve; according to the utility model, the spiral plate can be driven by the sleeve to rotate so as to prevent solid raw materials from precipitating at the bottom of the tank body, so that the raw materials are in a flowing state, and the stirring blades in a wing shape can rotate in the opposite direction above the guide end of the spiral plate; furthermore, vortex generated by the stirring blades can impact the raw materials conveyed by the spiral plate to a certain extent, so that the contact area between the solid raw materials and the liquid raw materials is increased, and the raw material mixing effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of raw material mixing, in particular to a homogenizing tank for mixing raw materials of lithium iron phosphate batteries. Background Art

[0002] At present, before making or producing lithium iron phosphate batteries, the raw materials need to be added into a mixing tank and stirred. The main purpose is to prepare positive and negative electrode slurries. The positive electrode material composed of active materials graphene composite conductive agents, binders, etc. and the negative electrode material composed of active materials graphene composite conductive agents, binders and dispersants are mixed evenly respectively, and then the solvent is added and stirred to form graphene composite lithium iron phosphate positive electrode slurry and graphene modified negative electrode slurry, and then the subsequent coating process is carried out.

[0003] In the prior art, the stirring tank used for mixing lithium iron phosphate battery slurry directly adopts internal stirring blades for stirring. Due to the centripetal force, some solid raw materials will settle at the bottom of the tank, making it difficult to fully blend the liquid raw materials with the solid raw materials in a short time. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that the stirring tank used for mixing lithium iron phosphate battery slurry in the prior art directly adopts internal stirring blades for stirring, and due to the centripetal force, part of the solid raw materials will be precipitated at the bottom of the tank body, making it difficult to fully blend the liquid raw materials and the solid raw materials in a short time. A homogenizing tank for mixing lithium iron phosphate battery raw materials is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A homogenizing tank for mixing raw materials of lithium iron phosphate batteries comprises a tank body, a sleeve is rotatably connected inside the tank body, a spiral plate is fixedly connected to the sleeve, a transmission rod is rotatably connected inside the tank body, a stirring blade is arranged on the outer wall of the transmission rod, the stirring blade is wing-shaped, the stirring blade is arranged above the guide end of the spiral plate, and the transmission rod rotates in opposite directions to the sleeve.

[0007] In order to facilitate the circulating flow mixing of the raw materials in the tank body, preferably, a conveying cylinder is fixedly connected to the tank body through a partition plate, a guide channel is formed between the conveying cylinder and the tank body, the spiral plate is arranged in the cavity of the conveying cylinder, and the axis of the sleeve coincides with the axis of the conveying cylinder.

[0008] In order to facilitate the rotation of the sleeve, preferably, the sleeve extends to the bottom of the tank body and is fixedly connected to a main gear, the bottom of the tank body is fixedly connected to a connecting shaft, the connecting shaft is fixedly connected to an auxiliary gear, and the main gear is meshed with the auxiliary gear.

[0009] In order to ensure that the rotation direction of the sleeve is always opposite to the rotation direction of the connecting shaft, the transmission rod is further rotatably connected to the sleeve, a first pulley is fixedly connected to the sleeve, a second pulley is fixedly connected to the connecting shaft, and the first pulley is connected to the second pulley through a belt.

[0010] In order to facilitate repeated mixing of the raw material mixture in the guide channel, preferably, a rotating shaft is rotatably connected to the tank body, and the rotating shaft extends into the guide channel and is fixedly connected to a blocking plate.

[0011] In order to facilitate turning over the solid raw materials that may be deposited at the bottom of the tank body, preferably, a cleaning plate is fixedly connected to the sleeve, and the contact end of the cleaning plate is in contact with the bottom of the tank body.

[0012] Compared with the prior art, the utility model provides a homogenizing tank for mixing raw materials of lithium iron phosphate batteries, which has the following beneficial effects:

[0013] 1. The lithium iron phosphate battery raw material mixing homogenizing tank drives the spiral plate to rotate through the casing, and the raw materials at the bottom of the tank body can be transported to the opening at the top of the conveying cylinder. At this time, the raw materials will flow to the inner bottom of the tank body through the diversion channel, thereby achieving a circulation effect to prevent solid raw materials from settling at the bottom of the tank body and keep the raw materials in a flowing state;

[0014] 2. The lithium iron phosphate battery raw material mixing homogenizing tank has a cleaning plate fixedly connected to the sleeve, and the contact end of the cleaning plate is fitted with the inner bottom of the tank body, so that the raw materials on the inner bottom of the tank body can be scraped;

[0015] 3. The homogenizing tank for mixing raw materials of lithium iron phosphate batteries rotates in the opposite direction above the guide end of the spiral plate through the wing-shaped stirring blade, so that the vortex generated by the stirring blade can have a certain impact on the raw materials transported by the spiral plate, thereby increasing the contact area between the solid raw materials and the liquid raw materials and improving the raw material mixing effect;

[0016] 4. The homogenizing tank for mixing raw materials of lithium iron phosphate batteries can drive the obstructed plate to rotate in the guide channel through the rotating shaft, so as to stir and mix the raw materials so that the raw materials are mixed more evenly.

[0017] The parts not involved in the device are the same as the existing technology or can be implemented by the existing technology. The utility model can use the sleeve to drive the spiral plate to rotate, and can guide the raw materials in the bottom of the tank body to the opening at the top of the conveying cylinder. At this time, the raw materials will flow to the inner bottom of the tank body through the guide channel, thereby achieving a circulation effect to prevent the solid raw materials from settling at the bottom of the tank body, so that the raw materials are in a flowing state, and the wing-shaped stirring blade can be rotated in the opposite direction above the guide end of the spiral plate, so that the vortex generated by the stirring blade can have a certain impact on the raw materials conveyed by the spiral plate, thereby increasing the contact area between the solid raw materials and the liquid raw materials, and improving the raw material mixing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of a homogenizing tank for mixing raw materials of lithium iron phosphate batteries proposed in the utility model;

[0019] Figure 2 This is a schematic diagram of a blocking plate of a homogenizing tank for mixing raw materials of a lithium iron phosphate battery proposed in the utility model;

[0020] Figure 3 This is a schematic cross-sectional view of a homogenizing tank for mixing raw materials for lithium iron phosphate batteries proposed in the utility model;

[0021] Figure 4 This is a schematic diagram of the bottom of a homogenizing tank for mixing raw materials for lithium iron phosphate batteries proposed in the utility model.

[0022] In the figure: 1, tank body; 2, conveying cylinder; 3, sleeve; 301, main gear; 302, first pulley; 4, transmission rod; 401, stirring blade; 5, spiral plate; 501, cleaning plate; 6, connecting shaft; 601, auxiliary gear; 602, second pulley; 7, rotating shaft; 701, obstruction plate. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0025] Example:

[0026] Reference Figure 1-Figure 4 A homogenizing tank for mixing raw materials of lithium iron phosphate batteries comprises a tank body 1. Two groups of feed pipes are arranged on the top of the tank body 1, and the two groups of feed pipes can add solid raw materials and liquid raw materials respectively. The positive electrode material mainly composed of active material graphene composite conductive agent, binder, etc. and the negative electrode material mainly composed of active material graphene composite conductive agent, binder and dispersant, etc. are mixed evenly respectively. A discharge pipe is also arranged at the bottom of the tank body 1, and an electromagnetic valve is arranged on the discharge pipe, which can be used to control the passage of the discharge pipe.

[0027] In addition, a conveying cylinder 2 is fixedly connected to the tank body 1 through a partition plate, and the centers of the cross sections of the conveying cylinder 2 and the tank body 1 are at the same position, but the diameter of the tank body 1 is larger than the diameter of the conveying cylinder 2, and the height of the tank body 1 is slightly higher than the height of the conveying cylinder 2, thereby forming a diversion channel between the tank body 1 and the conveying cylinder 2.

[0028] In addition, a sleeve 3 is rotatably connected to the tank body 1, and the sleeve 3 extends into the conveying cylinder 2, and a spiral plate 5 is fixedly installed on the sleeve 3, and the axis of the sleeve 3 coincides with the axis of the conveying cylinder 2. The sleeve 3 extends to the bottom of the tank body 1 and is fixedly connected to a main gear 301, and a connecting shaft 6 is fixedly connected to the bottom of the tank body 1, and an auxiliary gear 601 is fixedly connected to the connecting shaft 6. The main gear 301 is meshed with the auxiliary gear 601, and the sleeve 3 can be driven to rotate by a driving machine or a hydraulic motor, and the connecting shaft 6 can also be driven to rotate by a driving machine or a hydraulic motor, so that the auxiliary gear 601 drives the main gear 301 to rotate, thereby increasing the torque of the sleeve 3 and reducing the rotation speed of the sleeve 3.

[0029] When the sleeve 3 rotates, the raw materials at the bottom of the tank body 1 can be guided to the opening at the top of the conveying cylinder 2. At this time, the raw materials will flow to the inner bottom of the tank body 1 through the diversion channel, thereby achieving a circulation effect to prevent the solid raw materials from settling at the bottom of the tank body 1, so that the raw materials are in a flowing state, and a cleaning plate 501 is fixedly connected to the sleeve 3, and the contact end of the cleaning plate 501 is fitted with the inner bottom of the tank body 1, so that it can scrape the raw materials on the inner bottom of the tank body 1.

[0030] In order to better mix the raw materials, a transmission rod 4 is rotatably connected to the sleeve 3, and a stirring blade 401 is arranged on the outer wall of the transmission rod 4. The stirring blade 401 is wing-shaped and is arranged above the guide end of the spiral plate 5. Moreover, a first pulley 302 is fixedly connected to the sleeve 3, and a second pulley 602 is fixedly connected to the connecting shaft 6. The first pulley 302 is connected to the second pulley 602 through a belt.

[0031] When the sleeve 3 rotates, the main gear 301 will drive the auxiliary gear 601 to rotate, and the rotation direction of the auxiliary gear 601 is opposite to that of the main gear 301. When the auxiliary gear 601 rotates, it can drive the second pulley 602 to rotate in the same direction. At this time, the second pulley 602 will drive the first pulley 302 to rotate in the same direction, so that the transmission rod 4 and the sleeve 3 always rotate in opposite directions.

[0032] At this time, the wing-shaped stirring blade 401 will rotate in the opposite direction above the guiding end of the spiral plate 5, and the raw material will be moved from the bottom of the tank body 1 to the opening of the conveying cylinder 2 through the spiral plate 5. That is, in the process of conveying the raw material, the spiral plate 5 rotates along the direction of the spiral line, and at the same time, the raw material is pushed forward under the limitation of the conveying cylinder 2. At this time, the raw material rotates to a certain extent following the spiral plate 5. At this time, the wing-shaped stirring blade 401 will rotate in the opposite direction in the conveyed raw material, so that the vortex generated by the stirring blade 401 can have a certain impact on the raw material conveyed by the spiral plate 5, thereby increasing the contact area between the solid raw material and the liquid raw material, and improving the mixing effect of the raw materials.

[0033] In addition, a rotating shaft 7 is rotatably connected to the tank body 1, and the rotating shaft 7 extends into the guide channel and is fixedly connected to a blocked plate 701. The rotating shaft 7 can be driven to rotate by an electric motor or a hydraulic motor. When the raw materials in the tank body 1 circulate, the blocked plate 701 is driven to rotate in the guide channel by the rotating shaft 7, so that the raw materials can be stirred and mixed, so that the raw materials can be mixed more evenly.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A homogenizing tank for mixing raw materials for lithium iron phosphate batteries, comprising a tank body (1), characterized in that: A sleeve (3) is rotatably connected inside the tank body (1), a spiral plate (5) is fixedly connected to the sleeve (3), a transmission rod (4) is rotatably connected inside the tank body (1), a stirring blade (401) is arranged on the outer wall of the transmission rod (4), the stirring blade (401) is wing-shaped, the stirring blade (401) is arranged above the guide end of the spiral plate (5), and the transmission rod (4) and the sleeve (3) rotate in opposite directions.

2. A homogenizing tank for mixing raw materials for lithium iron phosphate batteries according to claim 1, characterized in that: A conveying cylinder (2) is fixedly connected to the tank body (1) via a partition plate, a flow guide channel is formed between the conveying cylinder (2) and the tank body (1), the spiral plate (5) is arranged in the cavity of the conveying cylinder (2), and the axis of the sleeve (3) coincides with the axis of the conveying cylinder (2).

3. The homogenizing tank for mixing raw materials for lithium iron phosphate batteries according to claim 1, characterized in that: The sleeve (3) extends to the bottom of the tank body (1) and is fixedly connected to a main gear (301); the bottom of the tank body (1) is fixedly connected to a connecting shaft (6); an auxiliary gear (601) is fixedly connected to the connecting shaft (6); and the main gear (301) is meshed with the auxiliary gear (601).

4. The homogenizing tank for mixing raw materials for lithium iron phosphate batteries according to claim 3, characterized in that: The transmission rod (4) is rotatably connected to the sleeve (3), a first pulley (302) is fixedly connected to the sleeve (3), a second pulley (602) is fixedly connected to the connecting shaft (6), and the first pulley (302) is connected to the second pulley (602) by a belt.

5. The homogenizing tank for mixing raw materials for lithium iron phosphate batteries according to claim 2, characterized in that: The tank body (1) is rotatably connected to a rotating shaft (7), and the rotating shaft (7) extends into the flow guide channel and is fixedly connected to a blocking plate (701).

6. The homogenizing tank for mixing raw materials for lithium iron phosphate batteries according to claim 1, characterized in that: A cleaning plate (501) is fixedly connected to the sleeve (3), and a contact end of the cleaning plate (501) fits the inner bottom of the tank body (1).

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