Mixing and extruding equipment for preparing silicon-carbon negative electrode material of lithium battery

Abstract

The utility model discloses mixing extrusion equipment for preparing a lithium battery silicon-carbon negative electrode material. The mixing extrusion equipment comprises a mixing box, one end of the top of the mixing box is fixedly connected with a feeding port, the top end of the feeding port is movably connected with a cover plate, the bottom end of the mixing box is fixedly connected with a supporting column, and the bottom end of the supporting column is fixedly connected with a bottom plate. According to the mixing and extruding equipment for preparing the silicon-carbon negative electrode material of the lithium battery, a fixed cover is arranged, before material mixing, materials are firstly added into a mixing box through a feeding opening, a second motor is started to drive a group of transmission chain wheels to rotate, and two groups of rotating shafts are driven to synchronously rotate through a transmission chain and a connecting shaft; the rotating shaft rotates and drives the stirring frame and the stirring rod outside the rotating shaft to rotate at the same time, the stirring frame and the stirring rod can rapidly stir the materials, the two stirring assemblies on the two sides can effectively improve the mixing efficiency, the situation that the materials at the corners cannot be fully mixed is prevented, and the problem that the mixing efficiency is low is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to a hybrid extrusion device for preparing a silicon-carbon negative electrode material of a lithium battery. Background Art

[0002] Lithium batteries are the most commonly used type of battery at present and have a very wide range of applications. Lithium batteries are used as energy storage components in vehicles, mechanical equipment, and various electronic products. Currently, silicon-carbon is commonly used as the negative electrode material during the production of lithium batteries. The negative electrode made of silicon-carbon has various advantages such as high specific capacity, environmental friendliness, and fast charging. During the production of lithium batteries, it is necessary to mix silicon-carbon materials.

[0003] However, there are still some defects in the mixing equipment for silicon-carbon negative electrode materials used in lithium battery production. During the mixing process, the mixing efficiency is low and the mixing effect is not good.

[0004] Now, a new type of hybrid extrusion device for preparing a silicon-carbon negative electrode material of a lithium battery is proposed to solve the above problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a hybrid extrusion device for preparing a silicon-carbon negative electrode material of a lithium battery to solve the problem of low mixing efficiency proposed in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A hybrid extrusion device for preparing a silicon-carbon negative electrode material of a lithium battery, including a mixing tank. One end of the top of the mixing tank is fixedly connected with a feed inlet. The top end of the feed inlet is movably connected with a cover plate. The bottom end of the mixing tank is fixedly connected with support columns. The bottom ends of the support columns are fixedly connected with a bottom plate. The bottom end of the mixing tank is fixedly connected with a feeding bin. A stirring structure for quickly mixing materials is arranged inside the mixing tank.

[0007] The stirring structure includes a rotating shaft. The two sides of the inner top of the mixing tank are movably connected with the rotating shaft. Stirring frames are fixedly connected to both sides of the rotating shaft. Stirring rods are fixedly connected inside the stirring frames. A fixed cover is fixedly connected to the top of the mixing tank. The rotating shaft extends into the fixed cover and is fixedly connected with a connecting shaft. A transmission sprocket is fixedly connected to the outside of the connecting shaft. A transmission chain is movably connected to the outside of the transmission sprocket. A second motor is fixedly connected to one side of the top of the fixed cover.

[0008] Further, the output end of the second motor extends into the fixed cover and is fixedly connected with the connecting shaft. The center line of the connecting shaft and the center line of the transmission sprocket are in the same vertical plane.

[0009] Further, the stirring rods are fixedly connected with the rotating shaft, and the rotating shafts on both sides inside the mixing tank are arranged symmetrically.

[0010] Preferably, two discharge ports are opened at the bottom end of the mixing box. Activity cavities are arranged at the bottom ends on both sides inside the mixing box. Side grooves are opened at the bottom ends on both sides of the mixing box. A cylinder is fixedly connected inside the side groove. The output end of the cylinder is fixedly connected with a piston rod. The piston rod extends into the activity cavity and is fixedly connected with a connecting plate. The top end on one side of the connecting plate is fixedly connected with a baffle plate.

[0011] Furthermore, the baffle plate extends into the discharge port and is movably connected with the discharge port. The discharge port is communicated with the inside of the material conveying bin.

[0012] Preferably, a spiral shaft is movably connected inside the material conveying bin. Extrusion pipes are fixedly connected to both sides at the bottom of the material conveying bin. A blanking cover is movably connected to the bottom end of the extrusion pipe. A first motor is fixedly connected to one side of the material conveying bin.

[0013] Furthermore, the output end of the first motor extends into the material conveying bin and is fixedly connected with the spiral shaft. The extrusion pipe is communicated with the inside of the material conveying bin.

[0014] Furthermore, the central axis of the spiral shaft and the central axis of the material conveying bin are on the same vertical plane.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: The mixing and extrusion equipment for preparing the silicon-carbon anode material of the lithium battery not only realizes the improvement of the mixing efficiency, realizes the convenient control of the discharge, but also realizes the rapid extrusion of the material;

[0016] (1) By providing a fixed cover, a rotating shaft, a stirring frame, a stirring rod, a driving sprocket, a driving chain, a connecting shaft and a second motor, before mixing the materials, first add the materials into the mixing box through the feeding port. Start the second motor to drive a group of driving sprockets to rotate, and drive two rotating shafts to rotate synchronously through the driving chain and the connecting shaft. While the rotating shafts are rotating, drive the stirring frames and stirring rods outside them to rotate. The stirring frames and stirring rods can quickly stir the materials, and the two stirring components on both sides can effectively improve the mixing efficiency and prevent the materials at the corners from being insufficiently mixed, realizing the improvement of the mixing efficiency;

[0017] (2) By providing a cylinder, a piston rod, an activity cavity, a connecting plate, a discharge port, a baffle plate and a side groove, when the materials inside the mixing box are mixed, start the cylinders on both sides at the same time to pull the connecting plate to move to one side through the piston rod. The connecting plate then drives the baffle plate to move to one side, so that the discharge ports on both sides are quickly opened, so that the mixed materials inside the mixing box can be quickly discharged through the discharge ports, realizing the quick discharge of the materials after mixing;

[0018] (3) By providing a material feeding bin, an extrusion pipe, a material blocking cover, a spiral shaft and a first motor, when exporting materials, the materials will first be sent into the interior of the material feeding bin. When the first motor is started to drive the spiral shaft inside the material feeding bin to rotate, the materials will be transported to both sides. When the material blocking cover is opened, under the extrusion of the spiral shaft, the materials are quickly extruded through the extrusion pipe for convenient collection. Moreover, the extruded materials are not easy to loosen, which is more convenient for transportation and processing, realizing the automatic extrusion of materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a front sectional structure schematic diagram of the present utility model;

[0020] Figure 2 is a top sectional structure schematic diagram of the fixed cover of the present utility model;

[0021] Figure 3 is a side structure schematic diagram of the material feeding bin of the present utility model;

[0022] Figure 4 of the present utility model Figure 1 is an enlarged structure schematic diagram at A in

[0023] In the figure: 1, mixing tank; 2, fixed cover; 3, feed inlet; 4, cover plate; 5, rotating shaft; 6, stirring frame; 7, stirring rod; 8, cylinder; 9, material feeding bin; 10, extrusion pipe; 11, support pillar; 12, bottom plate; 13, material blocking cover; 14, spiral shaft; 15, first motor; 16, piston rod; 17, movable cavity; 18, connecting plate; 19, discharge opening; 20, baffle; 21, driving sprocket; 22, driving chain; 23, connecting shaft; 24, side groove; 25, second motor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment 1: Please refer to Figures 1-4 , a mixing and extrusion device for preparing a silicon-carbon anode material for lithium batteries, including a mixing tank 1, one end of the top of the mixing tank 1 is fixedly connected with a feed inlet 3, the top end of the feed inlet 3 is movably connected with a cover plate 4, the bottom end of the mixing tank 1 is fixedly connected with support pillars 11, the bottom ends of the support pillars 11 are fixedly connected with a bottom plate 12, the bottom end of the mixing tank 1 is fixedly connected with a material feeding bin 9, and a stirring structure for quickly mixing materials is arranged inside the mixing tank 1;

[0026] The stirring structure includes a rotating shaft 5. The two sides of the inner top of the mixing tank 1 are movably connected to the rotating shaft 5. Stirring frames 6 are fixedly connected to both sides of the rotating shaft 5. Stirring rods 7 are fixedly connected to the inside of the stirring frames 6. A fixed cover 2 is fixedly connected to the top of the mixing tank 1. The rotating shaft 5 extends into the fixed cover 2 and is fixedly connected to a connecting shaft 23. A driving sprocket 21 is fixedly connected to the outside of the connecting shaft 23. A driving chain 22 is movably connected to the outside of the driving sprocket 21. A second motor 25 is fixedly connected to one side of the top of the fixed cover 2;

[0027] The output end of the second motor 25 extends into the fixed cover 2 and is fixedly connected to the connecting shaft 23. The central axis of the connecting shaft 23 and the central axis of the driving sprocket 21 are in the same vertical plane;

[0028] The stirring rods 7 are fixedly connected to the rotating shaft 5. The rotating shafts 5 on both sides inside the mixing tank 1 are symmetrically arranged;

[0029] Specifically, as Figure 1 , Figure 2 and Figure 4 shown, before mixing the materials, first add the materials into the inside of the mixing tank 1 through the feed inlet 3. Start the second motor 25 to drive a set of driving sprockets 21 to rotate, and drive the two sets of rotating shafts 5 to rotate synchronously through the driving chain 22 and the connecting shaft 23. While the rotating shafts 5 are rotating, drive the stirring frames 6 and the stirring rods 7 outside them to rotate. The stirring frames 6 and the stirring rods 7 can quickly stir the materials, and the two sets of stirring components on both sides can effectively improve the mixing efficiency and prevent the materials at the corners from being unable to be fully mixed, achieving the improvement of the mixing efficiency.

[0030] Embodiment 2: Two discharge openings 19 are opened at the bottom of the mixing tank 1. Moving chambers 17 are arranged at the bottoms of both sides inside the mixing tank 1. Side grooves 24 are opened at the bottoms of both sides of the mixing tank 1. A cylinder 8 is fixedly connected to the inside of the side groove 24. A piston rod 16 is fixedly connected to the output end of the cylinder 8. The piston rod 16 extends into the moving chamber 17 and is fixedly connected to a connecting plate 18. A baffle 20 is fixedly connected to the top of one side of the connecting plate 18;

[0031] The baffle 20 extends into the discharge opening 19 and is movably connected to the discharge opening 19. The discharge opening 19 is communicated with the inside of the material conveying bin 9;

[0032] Specifically, as Figure 1 and Figure 3 shown, when the materials inside the mixing tank 1 are mixed, start the cylinders 8 on both sides at the same time to pull the connecting plate 18 to move to one side through the piston rod 16. The connecting plate 18 then drives the baffle 20 to move to one side, so that the two discharge openings 19 on both sides are quickly opened, so that the mixed materials inside the mixing tank 1 can be quickly discharged through the discharge openings 19, achieving the quick discharge of the materials after mixing.

[0033] Embodiment 3: A spiral shaft 14 is movably connected inside the material feeding bin 9. On both sides of the bottom of the material feeding bin 9, an extrusion pipe 10 is fixedly connected. The bottom end of the extrusion pipe 10 is movably connected with a material blocking cover 13. On one side of the material feeding bin 9, a first motor 15 is fixedly connected;

[0034] The output end of the first motor 15 extends into the interior of the material feeding bin 9 and is fixedly connected to the spiral shaft 14. The extrusion pipe 10 is communicated with the interior of the material feeding bin 9;

[0035] The central axis of the spiral shaft 14 and the central axis of the material feeding bin 9 are in the same vertical plane;

[0036] Specifically, as Figure 1 and Figure 3 shown, when exporting materials, the materials will first be sent into the interior of the material feeding bin 9. Start the first motor 15 to drive the spiral shaft 14 inside the material feeding bin 9 to rotate. While the spiral shaft 14 rotates, it will transport the materials to both sides. Open the material blocking cover 13. Under the extrusion of the spiral shaft 14, the materials are quickly extruded through the extrusion pipe 10 for convenient collection. Moreover, the extruded materials are not easy to loosen, which is more convenient for transportation and processing, realizing the automatic extrusion of materials.

[0037] Working principle: When the present utility model is in use, before mixing materials, first add the materials into the interior of the mixing box 1 through the feed inlet 3. Start the second motor 25 to drive a set of driving sprockets 21 to rotate, and drive two sets of rotating shafts 5 to rotate synchronously through the drive chain 22 and the connecting shaft 23. While the rotating shafts 5 rotate, they drive the stirring frames 6 and stirring rods 7 outside them to rotate. The stirring frames 6 and stirring rods 7 can quickly stir the materials, and the two sets of stirring components on both sides can effectively improve the mixing efficiency and prevent the materials at the corners from being insufficiently mixed. When the materials inside the mixing box 1 are completely mixed, simultaneously start the cylinders 8 on both sides. The piston rods 16 pull the connecting plate 18 to move to one side, and the connecting plate 18 then drives the baffle 20 to move to one side, so that the two discharging ports 19 on both sides are quickly opened, and thus the mixed materials inside the mixing box 1 can be quickly exported through the discharging ports 19. When exporting materials, the materials will first be sent into the interior of the material feeding bin 9. Start the first motor 15 to drive the spiral shaft 14 inside the material feeding bin 9 to rotate. While the spiral shaft 14 rotates, it will transport the materials to both sides. Open the material blocking cover 13. Under the extrusion of the spiral shaft 14, the materials are quickly extruded through the extrusion pipe 10 for convenient collection. Moreover, the extruded materials are not easy to loosen, which is more convenient for transportation and processing.

Claims

1. A mixing extrusion device for preparing silicon-carbon negative electrode materials for lithium batteries, comprising a mixing box (1), characterized in that: One end of the top of the mixing box (1) is fixedly connected to a feed port (3), the top of the feed port (3) is movably connected to a cover plate (4), the bottom end of the mixing box (1) is fixedly connected to a support (11), the bottom end of the support (11) is fixedly connected to a bottom plate (12), the bottom end of the mixing box (1) is fixedly connected to a feed bin (9), and a stirring structure for quickly mixing materials is provided inside the mixing box (1); The stirring structure comprises a rotating shaft (5), the rotating shaft (5) is movably connected to both sides of the top of the mixing box (1), the stirring frames (6) are fixedly connected to both sides of the rotating shaft (5), the stirring frames (6) are fixedly connected to the inside of the stirring frames (6), the top of the mixing box (1) is fixedly connected to a fixed cover (2), the rotating shaft (5) extends to the inside of the fixed cover (2) and is fixedly connected to a connecting shaft (23), the outside of the connecting shaft (23) is fixedly connected to a transmission sprocket (21), the outside of the transmission sprocket (21) is movably connected to a transmission chain (22), and one side of the top of the fixed cover (2) is fixedly connected to a second motor (25).

2. The mixed extrusion equipment for preparing silicon-carbon negative electrode materials for lithium batteries according to claim 1, characterized in that: The output end of the second motor (25) extends to the interior of the fixed cover (2) and is fixedly connected to the connecting shaft (23), and the center line of the connecting shaft (23) and the center line of the transmission sprocket (21) are on the same vertical plane.

3. The mixed extrusion equipment for preparing silicon-carbon negative electrode materials for lithium batteries according to claim 1, characterized in that: The stirring rod (7) is fixedly connected to the rotating shaft (5), and the rotating shafts (5) on both sides inside the mixing box (1) are symmetrically arranged.

4. The mixed extrusion equipment for preparing silicon-carbon negative electrode materials for lithium batteries according to claim 1, characterized in that: The bottom end of the mixing box (1) is provided with two groups of discharge ports (19), the bottom ends of both sides of the mixing box (1) are provided with active chambers (17), the bottom ends of both sides of the mixing box (1) are provided with side grooves (24), the inside of the side grooves (24) is fixedly connected with a cylinder (8), the output end of the cylinder (8) is fixedly connected with a piston rod (16), the piston rod (16) extends to the inside of the active chamber (17) and is fixedly connected with a connecting plate (18), and the top end of one side of the connecting plate (18) is fixedly connected with a baffle (20).

5. The mixed extrusion equipment for preparing silicon-carbon negative electrode materials for lithium batteries according to claim 4, characterized in that: The baffle (20) extends to the interior of the material discharge port (19) and is movably connected to the material discharge port (19), and the material discharge port (19) is communicated with the interior of the material feeding bin (9).

6. The mixed extrusion equipment for preparing silicon-carbon negative electrode materials for lithium batteries according to claim 1, characterized in that: The inside of the feeding bin (9) is movably connected to a spiral shaft (14), the two sides of the bottom of the feeding bin (9) are fixedly connected to extrusion tubes (10), the bottom end of the extrusion tube (10) is movably connected to a blocking cover (13), and one side of the feeding bin (9) is fixedly connected to a first motor (15).

7. The mixed extrusion equipment for preparing silicon-carbon negative electrode materials for lithium batteries according to claim 6, characterized in that: The output end of the first motor (15) extends to the interior of the feeding bin (9) and is fixedly connected to the screw shaft (14), and the extrusion tube (10) is connected to the interior of the feeding bin (9).

8. The mixed extrusion equipment for preparing silicon-carbon negative electrode materials for lithium batteries according to claim 6, characterized in that: The center line of the screw shaft (14) and the center line of the feeding bin (9) are on the same vertical plane.

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