Batching device for lithium iron phosphate production

Abstract

The utility model provides a batching device for lithium iron phosphate production, which comprises an outer cylinder body, feed hoppers, a mixing cylinder, an electric push rod and a baffle plate, the feed hoppers are fixed at the left end and the right end of the top of the outer cylinder body, the mixing cylinder is fixed at the lower part in the outer cylinder body, and the electric push rod is transversely fixed at the right side of the bottom of the mixing cylinder; a baffle is fixedly connected to the left side of a push rod at the output end of the electric push rod, a guide cylinder is fixed to the upper portion of the interior of the mixing cylinder, a stand column is vertically fixed to the upper surface of the guide cylinder, a conveying pipe is vertically fixed to the middle of the mixing cylinder, a spiral conveying rod is embedded into the conveying pipe, and a connecting disc is embedded into the top of the outer side of the conveying pipe; a connecting column is vertically fixed to the bottom of the connecting disc, and an outer pipeline is fixed to the bottom of the connecting column. In the using process, raw materials can be dispersed and stirred, the raw materials can be prevented from being stacked at the bottom of the mixing barrel for a long time, stirring dead angles are fewer, the uniformity of raw material mixing and batching is further improved, and the batching effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of mixing equipment, in particular to a batching device for lithium iron phosphate production. Background Art

[0002] Lithium iron phosphate is a lithium-ion battery electrode material, mainly used in various lithium-ion batteries. The entire production process of lithium iron phosphate batteries generally includes the following batching steps: mixing of positive electrode raw materials, mixing of negative electrode raw materials, and mixing of electrolyte raw materials. The first two batching operations are generally solid material mixing. The existing common batching devices used for preparing positive and negative electrodes of batteries mainly include: a material tank, a mixing kettle, a stirring structure, and an external frame. However, the existing batching devices often have uneven batching during the batching process.

[0003] Therefore, a lithium battery diaphragm coating and batching system with patent number CN219168216U is proposed in the prior art. Through the arrangement of a batching tank, a motor, a rotating rod, a stirring blade, a connecting rod and a scraper, the bottom of the batching tank gradually shrinks inward, so that the mixed and formed diaphragm coating can be better discharged, the output effect is enhanced, and the internal residue is reduced. The motor drives the rotating rod to rotate, so that the stirring blade stirs and mixes the raw materials inside the batching tank, increases the movement between the raw materials, and enhances the mixing efficiency. The scraper rotates with the rotating rod through the connecting rod, thereby scraping off the diaphragm coating adhered to the inner wall of the batching tank, avoiding waste of raw materials and making the device more convenient to clean after use.

[0004] However, in actual use of the batching system, due to the large gap between the outer wall of the scraper and the stirring blade and the bottom of the batching tank, some raw materials will accumulate at the bottom of the batching tank for a long time, and there will be a large number of dead corners for stirring and batching, resulting in low overall mixing uniformity of the raw materials, further reducing the batching effect of the device. Utility Model Content

[0005] The utility model aims to solve the problems existing in the above-mentioned background technology and proposes a batching device for lithium iron phosphate production.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A batching device for lithium iron phosphate production comprises an outer cylinder, a feeding hopper, a mixing cylinder, an electric push rod and a baffle, wherein the left and right ends of the top of the outer cylinder are fixed with feeding hoppers, a mixing cylinder is fixed at the lower part of the inner part of the outer cylinder, an electric push rod is laterally fixed to the right side of the bottom of the mixing cylinder, a baffle is fixedly connected to the left side of the push rod at the output end of the electric push rod, a guide cylinder is fixed at the upper part of the inner part of the mixing cylinder, a column is vertically fixed to the upper surface of the guide cylinder, a conveying pipe is vertically fixed to the middle part of the mixing cylinder, a spiral conveying rod is embedded in the interior of the conveying pipe, a connecting disk is nested at the top of the outer side of the conveying pipe, a connecting column is vertically fixed to the bottom of the connecting disk, an outer pipe is fixed to the bottom of the connecting column, a stirring blade and a scraper are fixed to the outer wall of the outer pipe, and a main servo motor and an auxiliary servo motor are respectively fixed to the middle and right sides of the top of the outer cylinder.

[0008] Preferably, the auxiliary servo motor is rotatably connected between a gear plate at the output end and a connecting plate, and the inner wall of the outer pipe is in close contact with the outer wall of the conveying pipe.

[0009] Preferably, the main servo motor is rotationally connected to the spiral conveying rod through a transmission shaft, feed ports are arranged at the left and right ends of the bottom of the conveying pipe, a discharge port is arranged above the conveying pipe, and the discharge port of the connecting column below the connecting plate is arranged just outside the discharge port of the conveying pipe.

[0010] Preferably, the guide cylinder is arranged just below the outer side of the discharge port at the top of the conveying pipe, the guide cylinder is arranged in a "funnel" shape, and the columns are arranged in a circular ring around the middle of the guide cylinder.

[0011] Preferably, the distance between the middle of the guide cylinder and the outer wall of the outer pipe is 1-3 cm, the stirring blades are arranged at the bottom of the guide cylinder, and two groups of stirring blades are arranged from top to bottom below the outer wall of the outer pipe.

[0012] Preferably, three scrapers are arranged below the outer wall of the outer pipe, and the scrapers are arranged in a circular ring around the middle of the outer pipe, and the outer walls of the scrapers are in close contact with the inner wall of the mixing barrel.

[0013] 1. The auxiliary servo motor drives the stirring blades and scrapers to rotate through the gear plate, connecting plate, connecting column and external pipe to stir and mix the raw materials. The raw materials enter the lower part of the conveying pipe along the feed port at the bottom of the conveying pipe. At this time, the main servo motor drives the spiral conveying rod to rotate, so that the raw materials move from bottom to top along the conveying pipe and fall from the discharge port above the conveying pipe, avoiding the raw materials from accumulating at the bottom of the mixing barrel for a long time, and there are fewer dead corners for stirring, which further improves the uniformity of raw material mixing and batching, and the batching effect is better.

[0014] 2. After the raw materials fall along the discharge port of the hopper or conveying pipe, they will just enter the guide cylinder above the mixing cylinder, and move toward the middle along the upper surface of the guide cylinder. During the movement, the raw materials will hit the columns and disperse, avoiding a large number of raw materials of the same type from being mixed together. During the falling process, the raw materials will contact with the rotating stirring blades and be stirred and dispersed, resulting in a better batching effect, which further improves the uniformity of the raw material mixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a front cross-sectional schematic diagram of the overall structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the partial structure of the conveying pipe, the spiral conveying rod and the connecting plate in the utility model;

[0018] Figure 4 It is a schematic diagram of the local structure of the guide cylinder in the utility model.

[0019] Legend:

[0020] Outer cylinder 1, feeding hopper 101, mixing cylinder 102, electric push rod 103, baffle 104, guide cylinder 2, column 201, conveying pipe 202, spiral conveying rod 203, connecting plate 204, connecting column 205, outer pipeline 206, stirring blade 207, scraper 208, main servo motor 209, auxiliary servo motor 210. DETAILED DESCRIPTION

[0021] Example 1, reference Figure 1-4 A batching device for lithium iron phosphate production includes an outer cylinder 1, a feeding hopper 101, a mixing cylinder 102, an electric push rod 103 and a baffle 104. The feeding hoppers 101 are fixed to the left and right ends of the top of the outer cylinder 1, and the mixing cylinder 102 is fixed to the lower part of the outer cylinder 1. The electric push rod 103 is horizontally fixed to the right side of the bottom of the mixing cylinder 102, and the left side of the push rod at the output end of the electric push rod 103 is fixedly connected to the baffle 104. It is characterized in that a guide cylinder 2 is fixed to the upper part of the mixing cylinder 102, and the upper surface of the guide cylinder 2 is vertically A column 201 is fixed in the middle of the mixing barrel 102, a delivery pipe 202 is vertically fixed, a spiral delivery rod 203 is embedded in the delivery pipe 202, a connecting plate 204 is nested on the outer top of the delivery pipe 202, a connecting column 205 is vertically fixed to the bottom of the connecting plate 204, an outer pipe 206 is fixed to the bottom of the connecting column 205, a stirring blade 207 and a scraper 208 are fixed to the outer wall of the outer pipe 206, and a main servo motor 209 and an auxiliary servo motor 210 are respectively fixed to the middle and right sides of the top of the outer cylinder body 1.

[0022] The auxiliary servo motor 210 is rotatably connected to the connecting disk 204 through the gear disk at the output end, and the inner wall of the outer pipe 206 is closely attached to the outer wall of the delivery pipe 202;

[0023] The auxiliary servo motor 210 can drive the stirring blade 207 and the scraper 208 to rotate through the gear plate, the connecting plate 204, the connecting column 205 and the outer pipe 106 to stir and mix the raw materials;

[0024] The main servo motor 209 is rotatably connected to the spiral conveying rod 203 via a transmission shaft. The left and right ends of the bottom of the conveying pipe 202 are provided with a feed port, the top of the conveying pipe 202 is provided with a discharge port, and the discharge port of the connecting column 205 below the connecting plate 204 is just provided outside the discharge port of the conveying pipe 202.

[0025] During the process of the stirring blade 207 and the scraper 208 rotating to stir and mix the raw materials, the raw materials will enter the lower part of the conveying pipe 202 along the feed port at the bottom of the conveying pipe 202 due to the action of gravity. At this time, the main servo motor 209 drives the spiral conveying rod 203 to rotate, so that the raw materials move from bottom to top along the conveying pipe 202 and fall from the discharge port above the conveying pipe 202, thereby preventing the raw materials from accumulating at the bottom of the mixing barrel 102 for a long time, and reducing the stirring dead angle, further improving the uniformity of the raw material mixing and batching, and achieving a better batching effect;

[0026] Embodiment 2: Embodiment 2 is different from Embodiment 1 in that, in this embodiment, the guide cylinder 2 is arranged just below the outer side of the discharge port at the top of the conveying pipe 202, the guide cylinder 2 is arranged in a "funnel" shape, and the columns 201 are arranged in a circular ring around the middle of the guide cylinder 2;

[0027] After the raw materials fall along the discharge port of the hopper 101 or the conveying pipe 202, they will just enter the guide cylinder 2 above the mixing cylinder 102, and move toward the middle along the upper surface of the guide cylinder 2. During the movement, the raw materials will hit the column 201 and then disperse, thus avoiding a large number of raw materials of the same type from being mixed together, thereby further improving the uniformity of the raw material mixing.

[0028] The distance between the middle of the guide cylinder 2 and the outer wall of the outer pipe 206 is 1-3 cm, the stirring blades 207 are arranged at the bottom of the guide cylinder 2, and two groups of stirring blades 207 are arranged from top to bottom below the outer wall of the outer pipe 206;

[0029] When the raw materials pass through the middle of the guide cylinder 2 and fall, they will contact with the rotating stirring blades and be stirred and dispersed, which has a better batching effect and further improves the uniformity of the raw material mixing.

[0030] Three scrapers 208 are arranged below the outer wall of the outer pipe 206. The scrapers 208 are arranged in a circular ring around the middle of the outer pipe 206. The outer wall of the scraper 208 is in close contact with the inner wall of the mixing barrel 102.

[0031] The main function of the scraper 208 is to stir the raw materials stored in the lower part of the mixing barrel 102 to prevent the raw materials from sticking and accumulating under the inner wall of the mixing barrel 102 for a long time, thereby effectively reducing the dead corners of the mixing and mixing of the raw materials.

[0032] The above are only preferred implementations of the utility model. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the utility model. These should also be regarded as the protection scope of the utility model. These will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A batching device for lithium iron phosphate production, comprising an outer cylinder (1), a feeding hopper (101), a mixing cylinder (102), an electric push rod (103) and a baffle (104), wherein the feeding hopper (101) is fixed to the left and right ends of the top of the outer cylinder (1), the mixing cylinder (102) is fixed to the lower part of the inner part of the outer cylinder (1), the electric push rod (103) is fixed to the right side of the bottom of the mixing cylinder (102), and the baffle (104) is fixedly connected to the left side of the push rod at the output end of the electric push rod (103), characterized in that: A guide cylinder (2) is fixed on the upper part of the mixing cylinder (102), a column (201) is vertically fixed on the upper surface of the guide cylinder (2), a delivery pipe (202) is vertically fixed in the middle of the mixing cylinder (102), a spiral delivery rod (203) is embedded in the delivery pipe (202), a connection plate (204) is embedded in the top of the outer side of the delivery pipe (202), a connection column (205) is vertically fixed at the bottom of the connection plate (204), an outer pipe (206) is fixed at the bottom of the connection column (205), a stirring blade (207) and a scraper (208) are fixed to the outer wall of the outer pipe (206), and a main servo motor (209) and an auxiliary servo motor (210) are respectively fixed in the middle and right sides of the top of the outer cylinder body (1).

2. The batching device for lithium iron phosphate production according to claim 1, characterized in that: The auxiliary servo motor (210) is rotatably connected to the connecting disk (204) via a gear disk at the output end, and the inner wall of the outer pipe (206) is closely attached to the outer wall of the conveying pipe (202).

3. The batching device for lithium iron phosphate production according to claim 1, characterized in that: The main servo motor (209) is rotatably connected to the spiral conveying rod (203) via a transmission shaft; the left and right ends of the bottom of the conveying pipe (202) are provided with feed ports; the top of the conveying pipe (202) is provided with a discharge port; and the discharge port of the connecting column (205) below the connecting plate (204) is arranged just outside the discharge port of the conveying pipe (202).

4. The batching device for lithium iron phosphate production according to claim 1 or 3, characterized in that: The guide cylinder (2) is arranged just below the outer side of the top discharge port of the conveying pipe (202); the guide cylinder (2) is arranged in a "funnel" shape, and the columns (201) are arranged in a circular ring around the middle of the guide cylinder (2).

5. The batching device for lithium iron phosphate production according to claim 1, characterized in that: The distance between the middle of the guide cylinder (2) and the outer wall of the outer pipe (206) is 1-3 cm, the stirring blades (207) are arranged at the bottom of the guide cylinder (2), and two groups of stirring blades (207) are arranged from top to bottom below the outer wall of the outer pipe (206).

6. The batching device for lithium iron phosphate production according to claim 1, characterized in that: Three scrapers (208) are arranged below the outer wall of the outer pipe (206); the scrapers (208) are arranged in a circular ring around the middle of the outer pipe (206); and the outer walls of the scrapers (208) are in close contact with the inner wall of the mixing barrel (102).

Images