A composite sealing device for high-temperature reaction continuous production equipment of lithium battery materials

Abstract

The present invention discloses a composite sealing device for lithium battery material high-temperature reaction continuous production equipment, which relates to the technical field of sealing for lithium battery material high-temperature reaction continuous production equipment, including a basic sealing ring installed in a cavity between the outer wall of a rotating cylinder and the inner wall of a fixed cylinder; the fixed flange is connected to the right end of the fixed cylinder, and the fixed adjusting bolt is used to adjust the tightness of the basic sealing ring; the airtight sealing ring is installed in the cavity between the outer wall of the fixed cylinder and the inner wall of a rotating sealing cavity, and the rotating flange is connected to the left end of the rotating sealing cavity by a rotating adjusting bolt; the rotating sealing cavity is installed on the outer wall of the rotating cylinder by a fastening bolt; the present invention has the beneficial effects that the airflow leaked at the connection between the rotating cylinder and the fixed cylinder and the trajectory of lithium battery powder are "inverted U-shaped" with increased resistance, and the powdered lithium battery material is filled into the gaps in various places of the composite sealing device and accumulates to participate in sealing and lubrication to form a virtuous cycle.

Description

Technical Field

[0001] The present invention relates to the field of lithium battery materials, and particularly to a composite sealing device for a continuous production device of high-temperature reaction of lithium battery materials. Technical Background

[0002] When the continuous production device of high-temperature reaction of lithium battery materials produces lithium battery materials, the temperature reaches 500 to 1000 degrees Celsius, and the internal environment of the furnace is slightly positive pressure. It is required that the rotating high-temperature kettle be tightly sealed and work stably for a long time without leaking powder or air. If there is powder leakage or air leakage, the internal environment atmosphere of the rotating cylinder will change, the quality of the produced lithium battery materials will decrease, and the unqualified rate of products will increase. Moreover, due to the poor sealing performance of the continuous production device of high-temperature reaction, it is extremely easy to cause combustion or flash explosion due to high temperature, resulting in potential safety hazards in production. Therefore, the continuous production device of high-temperature reaction for processing lithium battery materials needs to achieve very high airtightness. The original continuous production device of high-temperature reaction of lithium battery materials has powder leakage and air leakage during use, and the sealing performance is poor. Moreover, as the use time of the device increases, the powder leakage and air leakage at the connection between the rotating cylinder and the fixed cylinder increase, which requires workers to often maintain and replace the sealing parts, increasing the labor intensity, and the cooling and shutdown cause power loss and reduction of production efficiency. Summary of the Invention

[0003] The purpose of the present invention is to provide a composite sealing device for a continuous production device of high-temperature reaction of lithium battery materials to solve the problems raised in the above technical background.

[0004] In order to achieve the above invention purpose and address the above technical problems, the present invention proposes the following technical solutions:

[0005] A composite sealing device for a continuous production equipment of high-temperature reaction of lithium battery materials, comprising a rotating cylinder, a fixed cylinder, a fixed flange, fixed adjusting bolts, a basic sealing ring, a rotating sealing cavity, fastening bolts, a rotating flange, rotating adjusting bolts, and an airtight sealing ring; the rotating cylinder is a cylinder with cavities at both ends open, the basic sealing ring is placed in the cavity at the connection and cooperation of the inner wall of the fixed cylinder and the outer wall of the rotating cylinder, the fixed flange is connected to the right end of the fixed cylinder by the fixed adjusting bolts arranged uniformly in a circumferential direction, the basic sealing ring is adjusted in tightness by the fixed adjusting bolts, the basic sealing ring is arranged along the central axis direction between the outer wall of the rotating cylinder and the inner wall of the fixed cylinder, the right end of the fixed cylinder is provided with threaded holes arranged uniformly in a circumferential direction, the rotating sealing cavity is composed of two symmetrical semi-cylinders with threaded holes arranged uniformly in a circumferential direction at the left end, the right end of the rotating sealing cavity is fixed on the rotating drum by the fastening bolts, a composite sealing cavity is formed between the inner wall of the rotating sealing cavity and the outer wall of the fixed cylinder, multiple airtight sealing rings are placed in the composite sealing cavity, the rotating adjusting bolts connect the rotating flange to the right end of the rotating sealing cavity to press the airtight sealing rings, and the rotating sealing cavity secondarily seals the entire basic sealing cavity to form the composite sealing device of the present invention.

[0006] Compared with the prior art, the beneficial effects of the present invention are:

[0007] The trajectories of the internal air flow and lithium battery material powder in the rotating cylinder moving towards the external environment are in an "inverted U shape", increasing the resistance to the exchange of the internal air flow in the rotating cylinder and the external environment. Most of the leaked air flow and lithium battery powder at the connection between the rotating cylinder and the fixed cylinder are blocked after passing through the cavity where the basic sealing ring is located, and a small part moves through the "inverted U-shaped" trajectory to the cavity where the airtight sealing ring is located and is completely blocked. The positive pressure in the rotating cylinder causes the powdered lithium battery material to invade the gaps everywhere in the composite sealing cavity. Due to the resistance of the "inverted U-shaped" movement trajectory path, the powdered lithium battery material melts into the gaps everywhere in the composite sealing cavity. The accumulated powdered lithium battery material directly participates in sealing and lubrication to form a virtuous cycle, making the relative movement resistance between the rotating cylinder and the fixed cylinder not only reduced but also the sealing tight. The composite sealing device of the equipment does not need to be shut down for maintenance for a long time, saving electric energy, reducing the labor intensity of the staff, and improving production efficiency and product quality. Description of the Drawings

[0008] Figure 1 It is a cross-sectional view of a composite sealing device for a continuous production equipment of high-temperature reaction of lithium battery materials;

[0009] Figure 2 It is an enlarged view of the partial view W of a composite sealing device for a continuous production equipment of high-temperature reaction of lithium battery materials;

[0010] Figure 3 For the fastening bolts of the composite sealing device of a continuous production equipment for high-temperature reaction of lithium battery materials, the external views of the rotating sealing cavity, rotating flange, rotating adjusting bolt, and airtight sealing ring assembly;

[0011] Figure 4 For the sectional views of the rotating sealing cavity, rotating flange, rotating adjusting bolt, and airtight sealing ring assembly of the composite sealing device of a continuous production equipment for high-temperature reaction of lithium battery materials;

[0012] Such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , the reference numerals are: rotating cylinder body 1, fixed cylinder body 2, fixed flange 3, fixed adjusting bolt 4, basic sealing ring 5, fastening bolt 6, rotating sealing cavity 7, rotating flange 8, rotating adjusting bolt 9, airtight sealing ring 10. Specific embodiments

[0013] Please refer to Figure 1 , the composite sealing device is installed at the connection between the rotating cylinder body 1 and the fixed cylinder body 2. The rotating cylinder body 1 has a cavity at both ends that is open, and the lithium battery material undergoes a high-temperature reaction inside it; the fixed cylinder body 2 is the fixed discharge end connecting to the rotating cylinder body 1, and there are threaded holes arranged in a circular pattern at the right end;

[0014] Please refer to Figure 2 , the basic sealing ring 5 is installed in the cavity between the outer wall of the rotating cylinder body 1 and the inner wall of the fixed cylinder body 2 and is arranged along the central axis direction; the basic sealing ring 5 is in the shape of a ring, and the number is one or more;

[0015] The fixed flange 3 is in the shape of a ring with a boss and has a plurality of circular holes evenly arranged in a circular pattern. It is connected to the right end of the fixed cylinder body 2, and the tightness of the basic sealing ring 5 is adjusted through the fixed adjusting bolt 4;

[0016] The airtight sealing ring 10 is installed in the cavity between the outer wall of the fixed cylinder body 2 and the inner wall of the rotating sealing cavity 7, and the rotating flange 8 is connected to the left end of the rotating sealing cavity 7 through the rotating adjusting bolt 9;

[0017] Both the airtight sealing ring 10 and the basic sealing ring 5 are in the shape of a ring, and they can be made of the same material, different materials, or a combination of several materials. The number of each is one or more and arranged;

[0018] Please refer to Figure 3 , Figure 4, the rotary sealing cavity 7 is composed of two symmetric hollow stepped semi-cylindrical tubes, and is installed on the outer wall of the rotary cylinder 1 through fastening bolts 6 and rotates synchronously with the rotary cylinder 1; the left end of the rotary sealing cavity 7 is evenly provided with threaded holes in the circumferential direction, and the rotary flange 8 is connected to the left end of the rotary sealing cavity 7 through a rotary adjusting bolt 9 to adjust the tightness of the airtight sealing ring 10;

[0019] The rotary sealing cavity 7 completely seals the cavity where the basic sealing ring 5 is located for the second time to form the composite sealing device of the present invention. The composite sealing device makes the movement trajectories of the airflow and the lithium battery material powder inside the rotary cylinder 1 and the external environment be in an "inverted U shape". The resistance of the airflow inside the rotary cylinder 1 flowing to the outside increases. The lithium battery powder material fills the gaps inside the "inverted U shape" composite sealing device, and the accumulated powdery lithium battery material directly participates in sealing and lubrication to form a virtuous cycle, making the relative movement resistance between the rotary cylinder and the fixed cylinder not only reduced but also tightly sealed. The composite sealing device of the equipment does not need to be shut down for maintenance for a long time, saves electric energy, reduces the labor intensity of the staff, and improves the production efficiency and product quality.

Claims

1. A composite sealing device for high temperature reaction continuous production equipment of lithium battery materials, characterized in that: It includes a rotating cylinder, a fixed cylinder, a fixed flange, a fixed adjustment bolt, a basic sealing ring, a rotating sealing cavity, a fastening bolt, a rotating flange, a rotating adjustment bolt and an airtight sealing ring. The rotating cylinder has a cylinder with open ends at both ends of the cavity. The basic sealing ring is placed at the connection between the fixed cylinder and the rotating cylinder. The fixed flange is connected to the right end of the fixed cylinder through the fixed adjustment bolt. The fixed adjustment bolts are arranged in a circle to adjust the tightness of the basic sealing ring. The basic sealing ring is in the cavity between the outer circle of the rotating cylinder and the inner circle of the fixed cylinder.

2. The composite sealing device for high temperature reaction continuous production equipment of lithium battery materials according to claim 1, characterized in that: The rotating sealing cavity is composed of two symmetrical semi-cylinders with steps, which are fixed to the rotating cylinder by the fastening bolts. The airtight sealing ring is placed between the inner wall of the rotating sealing cavity and the outer wall of the fixed cylinder. The rotating adjusting bolts are arranged symmetrically around the circumference to connect the rotating flange to the left end of the rotating sealing cavity to adjust the tightness of the airtight sealing ring. The rotating sealing cavity completely surrounds and seals the cavity where the basic sealing ring is located to form the composite sealing device of the present invention.

3. The composite sealing device for high temperature reaction continuous production equipment of lithium battery materials according to claim 1, characterized in that: The right end of the fixed cylinder is provided with threaded holes arranged in a circumference, and the fixed flange is connected to the right end of the fixed cylinder through the fixed adjustment bolts, and the fixed flange is used to adjust the basic sealing ring.

4. The composite sealing device for high temperature reaction continuous production equipment of lithium battery materials according to claim 1, characterized in that: The airtight sealing ring and the basic sealing ring are both in a circular ring shape.

5. The composite sealing device for high temperature reaction continuous production equipment of lithium battery materials according to claim 2, characterized in that: The left end of the rotating sealing cavity is evenly arranged with threaded holes along the circumference, and the right end is fixed to the rotating cylinder by the fastening bolts. The airtight sealing ring is placed between the outer circumference of the fixed cylinder and the inner circumference of the rotating sealing cavity.

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