Lithium battery material reacting furnace sealing device and reacting furnace

Abstract

The invention discloses a lithium battery material reaction furnace sealing device and a reaction furnace, the lithium battery material reaction furnace sealing device comprises a first flange, a second flange, an elastic sealing member and a baffle plate, the first flange is fixedly connected to the end face of a transfer furnace in a sealing manner, the second flange is sleeved on the outer side of the reaction furnace in a sealing manner, and the second flange is located in the first flange; a first annular groove is formed in the inner wall of the first flange, and a second annular groove is formed in the inner wall of the second flange; a flat annular body is arranged in the middle of the elastic sealing piece, the peripheral end of the elastic sealing piece extends inwards in a bent mode to form a positioning part, and the positioning part abuts against the step face of the first annular groove in a sealed mode. A ball head is arranged on the inner periphery of the inner side of the elastic sealing piece in an extending manner; the ball head abuts against the step face of the second annular groove in a sealed mode. One end of the baffle is connected to the outer side of the first flange, and the baffle abuts against the outer side wall of the annular body. The sealing ring can bear high temperature and high pressure, and is good in sealing performance and long in service life.

Description

Technical Field

[0001] The invention relates to a sealing device, and in particular to a sealing device and a reaction furnace for a lithium battery material reaction furnace with good sealing performance and long service life. Background Art

[0002] In the process of processing lithium battery materials, it is generally necessary to send the lithium battery materials into a rotary reactor for reaction. Specifically, the transfer furnace is connected to the rotary reactor, and the rotary reactor rotates relative to the transfer furnace. During processing, the lithium battery materials are sent from other equipment to the transfer furnace, and then the rotary reactor rotates and the internal blades are used to push the lithium battery materials forward. However, the interior of the rotary reactor is in a high temperature and high pressure state during processing. In order to reduce the loss of air pressure and heat, a sealing component is usually provided between the rotary reactor and the transfer furnace to seal the gap between the two. The sealing method used in the existing rotary reactor is multi-pass sealing. By using an adjusting screw to extrude multiple sealing rings, each sealing ring is radially deformed and in surface contact with the outer side of the rotary reactor to achieve the purpose of sealing. However, this method has a large contact area between the sealing ring and the rotary reactor, and the friction generated is also very large. On the one hand, it will cause resistance to the rotation of the rotary reactor, so that the power of the driving device to drive the rotary reactor will increase, thereby consuming more energy. On the other hand, after using it for a period of time, the sealing ring will be greatly worn, the sealing performance will be greatly reduced, the service life will be short, and it will need to be shut down for replacement and maintenance, which will reduce production efficiency. Summary of the invention

[0003] The purpose of the present invention is to provide a lithium battery material reactor sealing device which can withstand high temperature and high pressure, has good sealing performance and long service life.

[0004] Another object of the present invention is to provide a lithium battery material reactor with good sealing performance and long service life.

[0005] In order to achieve the above-mentioned purpose, the lithium battery material reactor sealing device provided by the present invention is used for sealing between the reactor and the transfer furnace, including a first flange, a second flange, an elastic seal and a baffle, wherein the first flange is sealingly fixedly connected to the end face of the transfer furnace, the second flange is sealingly sleeved on the outer side of the reactor and the second flange is located inside the first flange; a first annular groove is provided on the inner wall of the first flange, and a second annular groove is provided on the inner wall of the second flange; a flat annular body is provided in the middle of the elastic seal, and a positioning portion is extended inwardly in a bent manner at the outer peripheral end of the elastic seal, and the positioning portion is sealingly pressed against the step surface of the first annular groove; a ball head is provided on the inner periphery of the inner side of the elastic seal extending outward toward the central axis direction; the ball head is sealingly pressed against the step surface of the second annular groove; one end of the baffle is connected to the outer side of the first flange, and the other end of the baffle extends toward the central axis direction to the gap between the first flange and the second flange, and the baffle abuts against the outer side wall of the annular body.

[0006] Compared with the prior art, the present invention provides a first annular groove on the first flange, a second annular groove on the second flange, and an elastic seal between the first flange and the second flange, so that the outer peripheral end of the elastic seal extends the positioning portion inwardly in a bent manner, and a ball head is provided on the inner inner periphery extending outwardly toward the central axis direction, and the positioning portion is pressed against the step surface of the first annular groove, and the ball head is pressed against the step surface of the second annular groove, so that the gap between the first flange and the second flange can be sealed. At the same time, the baffle is used to push the elastic seal, which not only prevents the elastic seal from being separated from the first flange and the second flange due to the high gas pressure inside the reactor, but also enables the positioning portion and the step surface of the first flange and the ball head and the step surface of the second flange to be in closer contact, which is conducive to withstanding high temperature and high pressure, and has very good sealing performance. Moreover, when the second flange rotates relative to the first flange, the step surface of the second flange and the ball head are only in line contact or in a small surface contact, and the friction force generated between the two is very small, which will not produce a large resistance to the reactor, thereby reducing the driving power, reducing energy consumption, and greatly reducing the wear of the elastic seal, thereby greatly extending the service life, effectively improving production efficiency, and reducing production costs.

[0007] Preferably, a first connecting portion inclined relative to the annular body is provided between the annular body and the positioning portion. By providing the first connecting portion, when the baffle plate presses against the annular body, the positioning portion can be made elastic through the first connecting portion, so that the positioning portion can be elastically contacted with the step surface of the first annular groove, which not only enhances the sealing performance between the positioning portion and the step surface of the first annular groove, but also protects the elastic seal, preventing it from being excessively pressed and causing serious deformation of the positioning portion, thereby ensuring the reliability of the seal.

[0008] Specifically, an inclined abutting surface is provided on one side of the first annular groove opposite to the step surface in the groove, and the abutting surface abuts against the first connecting portion. When the baffle is pressed against the annular body, the first connecting portion is deformed and limited and abutted by the abutting surface, thereby forming a reverse thrust on the annular body, so that the ball head on the other side of the annular body is closer to the step surface of the second annular groove, which is beneficial to enhancing the sealing performance of the ball head and the second annular groove.

[0009] Preferably, the outer peripheral end of the elastic seal extends outwardly in the radial direction to form an inserting portion, and the inner bottom surface of the first annular groove is provided with a slot in the radial direction, and the inserting portion is inserted into the slot. By means of the cooperation between the inserting portion and the slot, when the elastic seal is subjected to the pressure of the baffle or the pressure of the internal air pressure, the side surface of the inserting portion can be sealed against the inner wall surface of the slot, which can not only enhance the sealing performance between the outer periphery of the elastic seal and the first flange, but also position and limit the outer periphery of the elastic seal to prevent the elastic seal from falling off, thereby greatly enhancing the stability of the elastic seal.

[0010] Preferably, a second connecting portion inclined relative to the annular body is provided between the annular body and the ball head. By providing the second connecting portion, when the baffle plate presses against the annular body, the ball head can be made elastic through the second connecting portion, so that the ball head can elastically contact with the step surface of the second annular groove, thereby improving the sealing performance.

[0011] Preferably, an elastic foot is extended outwardly and obliquely from the inner periphery of the outer side of the elastic seal toward the central axis, and a contact surface extending radially is provided on the side of the second annular groove opposite to the step surface in the groove, and the elastic foot is accommodated in the second annular groove and opposite to the contact surface. By providing the elastic foot, it can timely make sealing contact with the contact surface when the ball head leaves the step surface of the second annular groove, thereby ensuring effective sealing between the elastic seal and the second flange and greatly improving the sealing performance.

[0012] Preferably, the baffle is fixedly connected to the outer end surface of the first flange by screws, so that the baffle can be fixed and the distance between the baffle and the annular body can be adjusted, thereby adjusting the pressing force on the annular body, thereby achieving the purpose of adjusting the elastic sealing ability of the elastic seal, with a simple structure and convenient use.

[0013] Preferably, a connecting flange is provided on the outer periphery of the converter, the first flange is fixedly connected to the connecting flange by screws, and a sealing gasket is provided between the first flange and the connecting flange. By using the connecting flange, the first flange can be quickly and conveniently installed on the end face of the converter body, thereby improving the convenience of assembly.

[0014] Preferably, a sealing ring is provided between the reactor and the second flange. This can prevent leakage between the second flange and the reactor, thereby improving sealing performance and reliability; a pressing plate is provided on at least one side of the second flange, one end of the pressing plate is connected to the second flange by screws, and the sealing ring is provided between the pressing plate and the side surface of the second flange, so as to be pressed against the outer side surface of the reactor in a sealing manner under the pressure of the pressing plate. By providing the pressing plate, an extrusion force can be formed on the sealing ring, thereby ensuring the sealing performance between the second flange and the reactor.

[0015] A lithium battery material reactor comprises a reactor, a transfer furnace and a sealing device. One end of the reactor is coaxially sleeved with one end of the transfer furnace and rotates relative to the transfer furnace. The sealing device is arranged between the reactor and the transfer furnace to seal the gap between the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the lithium battery material reactor of the present invention.

[0017] Figure 2 It is a cross-sectional structural diagram of the sealing device of the lithium battery material reaction furnace of the present invention.

[0018] Figure 3 It is a cross-sectional structural diagram of the first flange and the second flange of the sealing device of the lithium battery material reactor of the present invention.

[0019] Figure 4 It is a structural diagram of the elastic sealing member of the sealing device of the lithium battery material reactor of the present invention. DETAILED DESCRIPTION

[0020] In order to explain the technical content, structural features and achieved effects of the present invention in detail, the following is a detailed description in conjunction with the implementation methods and the accompanying drawings.

[0021] like Figures 1 to 4As shown, the lithium battery material reactor of the present invention comprises a reactor 200, a transfer furnace 300 and a lithium battery material reactor sealing device 100. One end of the reactor 200 is coaxially sleeved with one end of the transfer furnace 300 and rotates relative to the transfer furnace 300. The lithium battery material reactor sealing device 100 is arranged between the reactor 200 and the transfer furnace 300 to seal the gap between the two. The lithium battery material reactor sealing device 100 comprises a first flange 1, a second flange 2, an elastic seal 3 and a baffle 4. The first flange 1 is sealed and fixedly connected to the end surface of the transfer furnace 300. The second flange 2 is sealed and sleeved on the outside of the reactor 200 and the second flange 2 is located in the first flange 1. The first flange 1 and the second flange 2 are coaxially arranged. The inner wall of the first flange 1 is provided with a first annular groove 11, and the inner wall of the second flange 2 is provided with a second annular groove 21. A flat annular main body 31 is provided in the middle of the elastic seal 3. A positioning portion 32 is bent inwardly from the outer peripheral end of the elastic seal 3. The positioning portion 32 is sealed against the step surface 111 of the first annular groove 11. The positioning portion 32 is a bent structure with a bending angle of 90 degrees. More specifically, the positioning portion 32 first extends in the axial direction, then bends 90 degrees in the radial direction toward the center, and then bends 90 degrees in the axial direction toward the annular main body 31. The step surface 111 has an axial surface 111a parallel to the central axis and a radial surface 111b parallel to the diameter direction. The positioning portion 32 is pressed against the step surface 111 so that one side thereof is in contact with the axial surface 111a and the other side is in contact with the radial surface 111b. A ball head 34 is provided on the inner circumference of the inner side of the elastic seal 3 and extends outward toward the central axis; the ball head 34 is sealed against the step surface 211 of the second annular groove 21 and is in line contact with the step surface 211 of the second annular groove 21. One end of the baffle plate 4 is connected to the outer side of the first flange 1, and the other end of the baffle plate 4 extends toward the central axis to the gap between the first flange 1 and the second flange 2, and the baffle plate 4 abuts against the outer side wall of the annular body 31.

[0022] Please see again Figures 2 to 4, a first connecting portion 35 inclined relative to the annular body 31 is provided between the annular body 31 and the positioning portion 32. Specifically, the distance from the center of one end of the first connecting portion 35 close to the positioning portion 32 is greater than the distance from the center of one end close to the annular body 31. By providing the first connecting portion 35, when the baffle 4 presses against the annular body 31, the positioning portion 32 can be made elastic through the first connecting portion 35, so that the positioning portion 32 can be elastically contacted with the step surface 111 of the first annular groove 11, which not only enhances the sealing performance between the positioning portion 32 and the step surface 111 of the first annular groove 11, but also protects the elastic seal 3, preventing it from being excessively pressed and causing the positioning portion 32 to be severely deformed, thereby ensuring the reliability of the seal. The first annular groove 11 is provided with an inclined abutting surface 112 on the side opposite to the step surface 111 in the groove, and the abutting surface 112 cooperates with the outer side surface of the first connecting portion 35 and the abutting surface 112 abuts against the first connecting portion 35. When the baffle 4 is pressed against the annular body 31, the first connecting portion 35 is deformed and is limited and pressed against by the pressing surface 112, thereby forming a reverse thrust on the annular body 31, so that the ball head 34 on the other side of the annular body 31 is closer to the step surface 211 or bottom surface of the second annular groove 21, which is beneficial to enhancing the sealing performance of the ball head 34 and the second annular groove 21.

[0023] Please see again Figures 2 to 4 The outer peripheral end of the elastic seal 3 extends outwardly in the radial direction to form an inserting portion 36, and the inner bottom surface of the first annular groove 11 is provided with a slot 113 in the radial direction, and the inserting portion 36 is inserted into the slot 113. By means of the cooperation between the inserting portion 36 and the slot 113, when the elastic seal 3 is subjected to the pressure of the baffle 4 or the pressure of the internal air pressure, the side surface of the inserting portion 36 can be sealed against the inner wall surface of the slot 113, which can not only enhance the sealing performance between the outer periphery of the elastic seal 3 and the first flange 1, but also position and limit the outer periphery of the elastic seal 3 to prevent the elastic seal 3 from falling off, thereby greatly enhancing the stability of the elastic seal 3.

[0024] Please see again Figure 4 A second connecting portion 33 is provided between the annular body 31 and the ball head 34, which is inclined relative to the annular body 31. By providing the second connecting portion 33, when the baffle 4 presses against the annular body 31, the ball head 34 can be made elastic through the second connecting portion 33, so that the ball head 34 can elastically contact with the step surface 211 of the second annular groove 21, thereby improving the sealing performance.

[0025] Please see again Figures 2 to 4The outer inner periphery of the elastic seal 3 extends an elastic foot 37 outwardly and obliquely toward the central axis. The second annular groove 21 is provided with a contact surface 212 extending in the radial direction on the side opposite to the step surface 211 in the groove. The elastic foot 37 is accommodated in the second annular groove 21 and opposite to the contact surface 212. By providing the elastic foot 37, it can timely make sealing contact with the contact surface 212 when the ball head 34 leaves the step surface 211 of the second annular groove 21, thereby ensuring effective sealing between the elastic seal 3 and the second flange 2, and greatly improving the sealing performance. The annular body 31, the first connecting portion 35, the positioning portion 32, the plug-in portion 36, the second connecting portion 33, the ball head 34 and the elastic foot 37 are all in an integrated structure, and are all made of high temperature resistant elastic materials, such as elastic silicone, rubber, etc.

[0026] See also Figure 2 The baffle plate 4 is fixedly connected to the outer end surface of the first flange 1 by screws 41. In this way, the baffle plate 4 can be fixed and the distance between the baffle plate 4 and the annular body 31 can be adjusted, thereby adjusting the pressure against the annular body 31, thereby achieving the purpose of adjusting the elastic sealing ability of the elastic seal 3, with a simple structure and convenient use. The baffle plate 4 covers at least half of the gap between the first flange 1 and the second flange 2; thereby better supporting the elastic seal 3.

[0027] Please see again Figure 2 The outer periphery of the converter 300 is provided with a connection flange 301, the first flange 1 is fixedly connected to the connection flange 301 by screws 1a, and a sealing gasket 1b is provided between the first flange 1 and the connection flange 301. By using the connection flange 301, the first flange 1 can be quickly and conveniently installed on the end surface of the converter 300 body, thereby improving the convenience of assembly.

[0028] Please see again Figure 2 and Figure 3 , a sealing ring 2a is provided between the reactor 200 and the second flange 2. In this way, leakage between the second flange 2 and the reactor 200 can be prevented, thereby improving the sealing performance and reliability. Specifically, a pressing plate 2b is provided on at least one side of the second flange 2, one end of the pressing plate 2b is connected to the second flange 2 by a screw 2c, and the sealing ring 2a is provided between the pressing plate 2b and the side surface of the second flange 2, so as to be radially deformed under the pressure of the pressing plate 2b and sealably pressed against the outer side surface of the reactor 200. By providing the pressing plate 2b, an extrusion force can be formed on the sealing ring 2a, thereby ensuring the sealing performance between the second flange 2 and the reactor 200.

[0029] Compared with the prior art, the present invention provides a first annular groove 11 on the first flange 1, a second annular groove 21 on the second flange 2, and an elastic seal 3 between the first flange 1 and the second flange 2, so that the outer peripheral end of the elastic seal 3 extends inwardly in a bent manner to form a positioning portion 32, and a ball head 34 is provided on the inner periphery extending outwardly toward the central axis direction, and the positioning portion 32 is pressed against the step surface 111 of the first annular groove 11, and the ball head 34 is pressed against the step surface 111 of the second annular groove 21, so that the gap between the first flange 1 and the second flange 2 can be sealed. At the same time, the baffle 4 is used to push against the elastic seal 3, so that the elastic seal 3 is prevented from being separated from the first flange 1 and the second flange 2 due to the high gas pressure inside the reactor 200, and the positioning portion 32 and the step surface 111 of the first flange 1 and the ball head 34 and the step surface 111 of the second flange 2 can be more closely contacted, which is conducive to bearing the high temperature and high pressure, and the sealing performance is very good. Moreover, when the second flange 2 rotates relative to the first flange 1, the step surface 111 of the second flange 2 and the ball head 34 are only in line contact or in a small surface contact, and the friction force generated therebetween is very small, and will not generate a large resistance to the reactor 200, thereby reducing the driving power, reducing energy consumption, and greatly reducing the wear of the elastic seal 3, thereby greatly extending the service life, effectively improving production efficiency, and reducing production costs.

[0030] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the scope covered by the present invention.

Claims

1. A lithium battery material reactor sealing device, used for sealing between a reactor and a transfer furnace, characterized in that: It includes a first flange, a second flange, an elastic seal and a baffle, the first flange is sealingly fixedly connected to the end face of the transfer furnace, the second flange is sealingly sleeved on the outer side of the reaction furnace and the second flange is located inside the first flange; a first annular groove is provided on the inner wall of the first flange, and a second annular groove is provided on the inner wall of the second flange; a flat annular main body is provided in the middle of the elastic seal, and a positioning portion is bent inwardly extending from the outer peripheral end of the elastic seal, and the positioning portion is sealingly pressed against the step surface of the first annular groove; a ball head is provided on the inner periphery of the inner side of the elastic seal extending outwardly toward the central axis direction; the ball head is sealingly pressed against the step surface of the second annular groove; one end of the baffle is connected to the outer side of the first flange, and the other end of the baffle extends to the gap between the first flange and the second flange toward the central axis direction, and the baffle abuts against the outer side wall of the annular main body.

2. The sealing device for a lithium battery material reactor as claimed in claim 1, characterized in that: A first connecting portion which is inclined relative to the annular body is provided between the annular body and the positioning portion.

3. The sealing device for a lithium battery material reactor as claimed in claim 2, characterized in that: An inclined abutting surface is provided on a side of the first annular groove opposite to the step surface in the groove, and the abutting surface abuts against the first connecting portion.

4. The sealing device for a lithium battery material reactor as claimed in claim 1, characterized in that: An inserting portion is radially extended outward from the outer peripheral end of the elastic sealing member, and a slot is radially provided on the inner bottom surface of the first annular groove, and the inserting portion is inserted into the slot.

5. The sealing device for a lithium battery material reactor as claimed in claim 1, characterized in that: A second connecting portion which is inclined relative to the annular body is provided between the annular body and the ball head.

6. The sealing device for a lithium battery material reactor as claimed in claim 1, characterized in that: An elastic foot is extended outwardly and obliquely from the inner periphery of the outer side of the elastic seal toward the central axis, and a contact surface extending radially is provided on the side of the second annular groove opposite to the step surface in the groove, and the elastic foot is accommodated in the second annular groove and opposite to the contact surface.

7. The sealing device for a lithium battery material reactor as claimed in claim 1, characterized in that: The baffle is fixedly connected to the outer end surface of the first flange by screws.

8. The sealing device for a lithium battery material reactor as claimed in claim 1, characterized in that: A connecting flange is arranged on the outer periphery of the converter, the first flange is fixedly connected to the connecting flange by screws, and a sealing gasket is arranged between the first flange and the connecting flange.

9. The sealing device for a lithium battery material reactor as claimed in claim 1, characterized in that: A sealing ring is provided between the reactor and the second flange; a pressure plate is provided on at least one side of the second flange, one end of the pressure plate is connected to the second flange by screws, and the sealing ring is arranged between the pressure plate and the side surface of the second flange to be sealed against the outer side surface of the reactor under the pressure of the pressure plate.

10. A lithium battery material reactor, characterized in that: It comprises a reaction furnace, a transfer furnace and a sealing device as described in any one of claims 1 to 9, one end of the reaction furnace is coaxially sleeved with one end of the transfer furnace and rotates relative to the transfer furnace, and the sealing device is arranged between the reaction furnace and the transfer furnace to seal the gap therebetween.

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