A rotary sealing device for aluminum battery composite calender
By adopting a combination of conical body and O-ring, a double-maze sealing structure and a disc spring design in an aluminum battery composite calender, the sealing problem caused by the slanting of the rotary joint is solved, extending the service life and reducing maintenance cost.
Patent Information
- Application Number
- CN202110992873.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-08-27
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2041-08-27
AI Technical Summary
During use, the rotary joints of existing aluminum battery composite calenders are prone to disengage the sealing plane due to slanting, damage to the ball bearing, wear of the seal, short service life, and complex transmission form design, which increases maintenance costs.
A rotary sealing device including a first connecting flange, a second connecting flange, a connecting inner tube and a connecting shaft is designed, and a double-maze sealing structure is used to provide a cone with a disc spring. The head body centrifugal preload ensures the seals operate simultaneously, reduces wear, and saves space and cost through stainless steel material and synchronous pin connections.
It effectively avoids wear and damage to seals, extends service life, facilitates maintenance and replacement, ensures the reliability of seals and synchronous operation, and reduces maintenance costs.
Smart Images
Figure CN113586825B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of rotary sealing devices, and in particular to a rotary sealing device for an aluminum battery composite calender. Background Art
[0002] Since the rotary joints used in aluminum battery composite calenders on the market are basically flat rotary joints, such as the attached Figure 6 As shown, there are double ball bearings between the rotating shaft and the fixed housing as a balancing support, so this planar rotary joint can run at a higher speed. However, this rotary joint has high requirements on the working conditions of use, and also has high requirements on the concentricity of the installation between the rotary joint, machinery and equipment, and the connecting inner tube. If the inner tube connecting the rotary joint and the equipment is long, it will cause deflection, especially at the position on the rear end cover of the rotary joint. The deflection phenomenon is particularly serious. The rigid extrusion of the inner tube can easily cause the sealing plane of the rotary joint to disengage during use, causing leakage. Even if the sealing surface is not disengaged, long-term deflection will also cause a serious burden on the ball bearing, and the balls in the bearing will often fall off and be damaged. In addition, the sealing surface will also be aggravated by wear due to the deflection problem, which will greatly shorten the service life of the rotary joint.
[0003] Therefore, the conventional rotary joints on the market have the following problems in actual use: ① The inner tube between the rotary joint and the aluminum battery composite calender is too long, which is easy to damage the seal inside the rotary joint and shorten the service life of the rotary joint; ② The traditional rotary joint connection method makes the transmission form of the equipment can only be designed at the roller end of the equipment, which increases the difficulty of installing the equipment transmission and takes up more space; ③ The sealing form of the inner tube of the conventional rotary joint is easy to cause damage to the seal and seal failure as the use time increases, causing the media in and out of the equipment to cross; ④ The conventional connection method of the rotary joint is to screw the thread and the equipment roller together. Under normal use, the thread will become tighter and tighter, and the roller on the aluminum battery composite calender needs to be replaced every six months. Sometimes the thread of the rotary joint cannot be screwed down or even the thread breaks, which greatly increases the maintenance cost of the equipment. Summary of the invention
[0004] In order to solve the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a rotary sealing device for an aluminum battery composite calender to overcome the defects in the prior art.
[0005] In order to achieve the above-mentioned purpose, the present invention provides a rotary sealing device for an aluminum battery composite calender, comprising a first connecting flange, a second connecting flange, a connecting inner tube and a connecting rotating shaft, wherein an equipment roller is inserted at the left end of the first connecting flange, a first mounting hole is arranged on the inner end surface of the first connecting flange in contact with the equipment roller, a first threaded hole is arranged on the end surface of the equipment roller, a first hexagon socket bolt passes through the first mounting hole and is threadedly connected in the first threaded hole, so that the first connecting flange is fixedly connected to the equipment roller, the first hexagon socket bolt is made of stainless steel and immersed in the medium of the first connecting flange; the first connection method A second connecting flange is inserted at the right end of the flange, the second connecting flange and the lower side of the first connecting flange are connected by a first external hexagonal bolt, and the second connecting flange is connected to the upper side of the first connecting flange by a first synchronization pin; an internal thread is arranged inside the left end of the second connecting flange for assembly and connection with the external thread of the inner tube of the equipment, an inner cone is arranged at the right end of the second connecting flange, and an outer cone is arranged at the left end of the inner tube, and the outer cone connected to the inner tube is embedded in the inner cone of the second connecting flange, and a second mounting groove is arranged on the outer wall of the outer cone, and a second O-ring is embedded in the second mounting groove and contacts with the inner wall of the second connecting flange , to play a sealing role; the connecting shaft is sleeved on the outside of the connecting inner tube, the connecting shaft is inserted into the right end of the second connecting flange, the lower side of the connecting shaft and the second connecting flange is connected by a second external hexagonal bolt, and the upper side of the connecting shaft and the second connecting flange is connected by a second synchronous pin; the connecting inner tube is fixedly connected with a limited block by a fastening screw, and a butterfly spring is arranged between the limited block and the connecting shaft for pre-tightening, so that the outer cone of the connecting inner tube and the inner cone of the second connecting flange are always in a fitting state; a plurality of raised sheet structures are arranged on the mating surfaces of different levels in contact with the right end of the connecting inner tube and the connecting shaft, and the connecting shaft A plurality of recessed groove structures are arranged on the corresponding mating surfaces of different levels, so that the sheet structures and groove structures that are spaced apart and matched with each other form two left and right labyrinth sealing structures; a third installation groove is opened on the connecting shaft located between the two labyrinth sealing structures, and the third O-ring is embedded in the third installation groove and contacts with the outer wall of the connecting inner tube to play a sealing role; the right end of the connecting shaft is connected to the equipment transmission shaft through the second key bar, so that the connecting shaft rotates synchronously with the equipment transmission shaft, and then the connecting shaft, the connecting inner tube, the second connecting flange, the first connecting flange, the equipment roller and the equipment inner tube operate synchronously.
[0006] Through the above technical solution, the first connecting flange is connected to the equipment roller through the first hexagon socket bolt. Since the size of the equipment roller is small, the first hexagon socket bolt is designed to be immersed in the medium and is made of stainless steel, which can save space on the roller and production cost; the connecting inner tube adopts an O-ring designed on the cone at one end for sealing, and a double labyrinth-type O-ring is used for sealing at the other end to ensure the sealing reliability, and the middle section of the connecting inner tube is designed with a disc spring to seal the cone and provide the conical body with a self-aligning preload, which can effectively ensure the concentricity of the connecting inner tube and play a shock-absorbing and buffering role. In the floating state, it always keeps synchronous operation with all transmission components, avoids wear and damage of the seals, increases service life, and facilitates maintenance and replacement.
[0007] As a further description of the rotary sealing device of the aluminum battery composite calender described in the present invention, preferably, a first installation groove is opened on the inner wall of the first connecting flange, and a first O-ring is embedded in the first installation groove and contacts with the outer wall of the equipment roller to act as a sealing medium.
[0008] As a further description of the rotary sealing device of the aluminum battery composite calender described in the present invention, preferably, a first key strip is arranged between the upper side of the equipment roller and the first connecting flange to eliminate the rotation angle difference caused by the gap between the first hexagon socket bolt and the first mounting hole.
[0009] As a further description of the rotary sealing device of the aluminum battery composite calender described in the present invention, preferably, a sealing gasket is arranged between the end face of the second connecting flange and the first connecting flange, so that the sealing gasket can play a sealing role by being squeezed by the end face of the second connecting flange.
[0010] As a further explanation of the rotary sealing device of the aluminum battery composite calendering machine described in the present invention, preferably, the first external hexagonal bolt is cooperatively connected with the axial hole of the second connecting flange, the first external hexagonal bolt is threadedly screwed with the first connecting flange, the first synchronization pin is threadedly screwed with the second connecting flange, and the first synchronization pin is cooperatively connected with the axial hole of the first connecting flange to eliminate the rotational angle difference between the second connecting flange and the first connecting flange.
[0011] As a further description of the rotary sealing device of the aluminum battery composite calender described in the present invention, preferably, a fourth mounting groove is opened on the outer wall of the connecting shaft, and a fourth O-ring is embedded in the fourth mounting groove and contacts the inner wall of the second connecting flange to act as a sealing medium.
[0012] As a further explanation of the rotary sealing device of the aluminum battery composite calendering machine described in the present invention, preferably, the second external hexagonal bolt is matched and connected with the axial hole of the connecting shaft, the second external hexagonal bolt is screwed together with the second connecting flange thread, the second synchronization pin is screwed together with the connecting shaft thread, and the second synchronization pin is matched with the axial hole of the second connecting flange to eliminate the angular difference between the connecting shaft and the second connecting flange.
[0013] As a further description of the rotary sealing device of the aluminum battery composite calender described in the present invention, preferably, a pressure cover is sleeved on the connecting inner tube, the pressure cover is located on the left side of the limit block, and the pressure cover is fixedly connected to the connecting shaft by a second hexagon socket bolt.
[0014] As a further explanation of the rotary sealing device of the aluminum battery composite calender described in the present invention, preferably, the outer sleeve of the connecting shaft is provided with a shell, a shaft rotating sealing ring is provided between the shell and the connecting shaft, and a stop hole is provided on the shell so that the shell remains stationary when the connecting shaft rotates.
[0015] As a further explanation of the rotary sealing device of the aluminum battery composite calender described in the present invention, preferably, the left end of the shell is assembled with the connecting shaft through a deep groove ball bearing, the right side of the deep groove ball bearing is limited by an elastic retaining ring of the first shaft, and the elastic retaining ring of the first shaft is embedded in the connecting shaft, and the right end of the shell is assembled with the connecting shaft through a ball bearing, the right side of the ball bearing is limited by an elastic retaining ring of the second shaft, and the elastic retaining ring of the second shaft is embedded in the connecting shaft.
[0016] The beneficial effects of the present invention are as follows: the first connecting flange of the present invention is connected to the equipment roller through the first hexagon socket bolt. Since the size of the equipment roller is small, the first hexagon socket bolt is designed to be immersed in the medium and is made of stainless steel, which can save space on the roller and production cost; the connecting inner tube adopts an O-ring designed on the cone at one end for sealing, and a double labyrinth-type O-ring is used for sealing at the other end to ensure the sealing reliability, and a disc spring is designed in the middle section of the connecting inner tube to perform sealing compensation on the cone and provide a conical body self-aligning preload, which can effectively ensure the concentricity of the connecting inner tube and play a shock-absorbing and buffering role. In the floating state, it always maintains synchronous operation with all transmission components, avoids wear and damage of the seals, increases service life, and facilitates maintenance and replacement. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic structural diagram of the rotary sealing device of the aluminum battery composite calender of the present invention.
[0018] Figure 2 It is a schematic diagram of the assembly of the equipment roller and the first connecting flange of the present invention.
[0019] Figure 3 It is a schematic diagram of assembling the first connecting flange and the second connecting flange of the present invention.
[0020] Figure 4 It is a schematic diagram of the assembly of the second connecting flange, the connecting inner tube and the connecting rotating shaft of the present invention.
[0021] Figure 5 for Figure 1 A partial enlarged view of the .
[0022] Figure 6 It is a structural schematic diagram of a planar rotary joint in the prior art.
[0023] In the accompanying drawings: equipment roller 1, equipment inner tube 2, first key strip 3, first connecting flange 4, first O-ring 5, first hexagon socket bolt 6, sealing gasket 7, first synchronization pin 8, second connecting flange 9, second O-ring 10, connecting inner tube 11, fourth O-ring 12, second hexagon socket bolt 13, second synchronization pin 14, pressure cover 15, fastening screw 16, limit block 17, connecting shaft 18, housing 19, second key strip 20, equipment transmission shaft 21, elastic retaining ring 22 for second shaft, ball bearing 23, rotating seal ring for shaft 24, third O-ring 25, elastic retaining ring 26 for first shaft, deep groove ball bearing 27, butterfly spring 28, second external hexagon socket bolt 29, first external hexagon socket bolt 30. DETAILED DESCRIPTION
[0024] In order to further understand the structure, features and other purposes of the present invention, the preferred embodiments are described in detail with reference to the accompanying drawings as follows. The embodiments described in the drawings are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention.
[0025] like Figure 1 As shown, Figure 1 It is a structural schematic diagram of the rotary sealing device of the aluminum battery composite calender of the present invention; the rotary sealing device of the aluminum battery composite calender comprises a first connecting flange 4, a second connecting flange 9, a connecting inner tube 11 and a connecting rotating shaft 18, wherein an equipment roller 1 is inserted at the left end of the first connecting flange 4, and a first mounting hole is arranged on the inner end face of the first connecting flange 4 in contact with the equipment roller 1, and a first threaded hole is arranged on the end face of the equipment roller 1, and a first hexagon socket bolt 6 passes through the first mounting hole and is threadedly connected in the first threaded hole so that the first connecting flange 4 is fixedly connected to the equipment roller 1. Since the size of the equipment roller 1 is small, the first hexagon socket bolt 6 is designed to be immersed in the medium. The first hexagon socket bolt 6 is made of stainless steel, which can save space on the roller and production cost. Figure 2As shown, preferably, a first mounting groove is opened on the inner wall of the first connecting flange 4, and a first O-ring 5 is embedded in the first mounting groove and contacts with the outer wall of the equipment roller 1, so that the first O-ring 5 acts as a sealing medium between the first connecting flange 4 and the equipment roller 1; preferably, a first key strip 3 is arranged between the upper side of the equipment roller 1 and the first connecting flange 4 to eliminate the angular difference caused by the gap between the first hexagon socket bolt 6 and the first mounting hole when the equipment is running.
[0026] like Figure 1 and Figure 2 As shown, a second connecting flange 9 is inserted into the right end of the first connecting flange 4, the second connecting flange 9 and the lower side of the first connecting flange 4 are connected by a first external hexagonal bolt 30, and the second connecting flange 9 and the upper side of the first connecting flange 4 are connected by a first synchronization pin 8. Preferably, the first external hexagonal bolt 30 is matched with the axial hole of the second connecting flange 9, the first external hexagonal bolt 30 is screwed and connected with the first connecting flange 4, the first synchronization pin 8 is screwed and connected with the second connecting flange 9, and the first synchronization pin 8 is matched with the axial hole of the first connecting flange 4 to eliminate the angular difference between the second connecting flange 9 and the first connecting flange 4, and to facilitate the disassembly of the first synchronization pin 8, so as to prevent the first synchronization pin 8 from being stuck on the first connecting flange 4 due to direct matching. Preferably, a sealing gasket 7 is provided between the end face of the second connecting flange 9 and the first connecting flange 4, so that the sealing gasket 7 plays a sealing role by being squeezed by the end face of the second connecting flange 9.
[0027] like Figure 1 and Figure 3 As shown, the left end of the second connecting flange 9 is provided with an internal thread for assembly and connection with the external thread of the equipment inner tube 2. The equipment inner tube 2 extends out of the end face of the equipment roller 1 by a very short position and is screwed on the second connecting flange 9. At that time, the equipment inner tube 2 and the second connecting flange 9 will operate synchronously, and the thread is a sealing thread. The right end of the second connecting flange 9 is provided with an inner cone, and the left end of the connecting inner tube 11 is provided with an outer cone. The outer cone of the connecting inner tube 11 is embedded in the inner cone of the second connecting flange 9, which will automatically align the center and ensure the concentricity when the inner tube is connected. The outer wall of the outer cone is provided with a second mounting groove, and the second O-type sealing ring 10 is embedded in the second mounting groove and contacts the inner wall of the second connecting flange 9, so that the second O-type sealing ring 10 plays a sealing role between the outer cone of the connecting inner tube 11 and the second connecting flange 9.
[0028] like Figure 1 and Figure 4As shown, the connecting shaft 18 is sleeved outside the connecting inner tube 11, and the connecting shaft 18 is inserted into the right end of the second connecting flange 9. The lower side of the connecting shaft 18 and the second connecting flange 9 are connected by the second external hexagonal bolt 29, and the upper side of the connecting shaft 18 and the second connecting flange 9 are connected by the second synchronization pin 14; preferably, the second external hexagonal bolt 29 is matched with the shaft hole of the connecting shaft 18, the second external hexagonal bolt 29 is screwed and connected with the second connecting flange 9, the second synchronization pin 14 is screwed with the connecting shaft 18, and the second synchronization pin 14 is matched with the shaft hole of the second connecting flange 9 to eliminate the angular difference between the connecting shaft 18 and the second connecting flange 9, and to facilitate the disassembly of the second synchronization pin 14, so as to prevent the second synchronization pin 14 from being stuck on the second connecting flange 9 due to direct matching. Preferably, a fourth mounting groove is provided on the outer wall of the connecting shaft 18, and the fourth O-ring 12 is embedded in the fourth mounting groove and contacts the inner wall of the second connecting flange 9 to play the role of sealing the medium.
[0029] like Figure 1 and Figure 4 As shown, the connection inner tube 11 is fixedly connected to the limit block 17 by a fastening screw 16, and a butterfly spring 28 is arranged between the limit block 17 and the connection shaft 18 to perform a pre-tightening effect, so that the outer cone of the connection inner tube 11 and the inner cone of the second connection flange 9 are always in a fitting state; the second O-ring 10 is always in a sealing state, and then the connection inner tube 11 and the second connection flange 9 will be in a synchronous operation state. Preferably, a gland 15 is sleeved on the connection inner tube 11, and the gland 15 is located on the left side of the limit block 17. The gland 15 is fixedly connected to the connection shaft 18 by a second hexagon socket bolt 13.
[0030] like Figure 1 and Figure 5 As shown, a plurality of raised sheet structures are arranged on the mating surfaces at different levels where the right end of the connecting inner tube 11 contacts the connecting shaft 18, and a plurality of recessed groove structures are arranged on the mating surfaces at different levels on the connecting shaft 18, so that the sheet structures and groove structures that are spaced apart and matched with each other form two left and right labyrinth seal structures; a third installation groove is provided on the connecting shaft 18 located between the two labyrinth seal structures, and a third O-type sealing ring 25 is embedded in the third installation groove and contacts the outer wall of the connecting inner tube 11, so that the third O-type sealing ring 25 plays a sealing role between the connecting shaft 18 and the connecting inner tube 11.
[0031] like Figure 1As shown, the right end of the connecting shaft 18 is connected to the equipment transmission shaft 21 through the second key bar 20, so that the connecting shaft 18 rotates synchronously with the equipment transmission shaft 21, and then the connecting shaft 18, the connecting inner tube 11, the second connecting flange 9, the first connecting flange 4, the equipment roller 1 and the equipment inner tube 2 operate synchronously. The connecting inner tube 11 is non-rigidly connected between the connecting shaft 18 and the second connecting flange 9, which can play a role in shock absorption and buffering of the overall connection, so the seals of each connection part also operate synchronously without relative displacement, so there is no seal wear at the connection part, the service life is longer, and the economic benefit is higher.
[0032] like Figure 1 As shown, the outer sleeve of the connecting shaft 18 is provided with a housing 19, and a shaft rotating seal ring 24 is provided between the housing 19 and the connecting shaft 18. The housing 19 is provided with a rotation-stopping hole so that the housing 19 remains stationary when the connecting shaft 18 rotates. The left end of the housing 19 is assembled with the connecting shaft 18 through a deep groove ball bearing 27, and the right side of the deep groove ball bearing 27 is limited by a first shaft elastic retaining ring 26, and the first shaft elastic retaining ring 26 is embedded in the connecting shaft 18. The right end of the housing 19 is assembled with the connecting shaft 18 through a ball bearing 23, and the right side of the ball bearing 23 is limited by a second shaft elastic retaining ring 22, and the second shaft elastic retaining ring 22 is embedded in the connecting shaft 18.
[0033] The above-mentioned aluminum battery composite calender rotary sealing device, the inner wall of the equipment inner tube 2, the inner wall of the second connecting flange 9, the outer wall of the second O-ring 10, the inner wall of the connecting inner tube 11, the outer wall of the third O-ring 25, the inner wall of the connecting shaft 18, the outer wall of the shaft rotating seal 24 and the rear cavity of the shell 19 constitute the first medium channel, and the second medium channel is composed of the inner wall of the equipment roller 1, the inner wall of the first connecting flange 4, the outer wall of the first O-ring 5, the inner wall of the sealing gasket 7, the inner wall of the second connecting flange 9, the outer wall of the fourth O-ring 12, the inner wall of the connecting shaft 18, the outer wall of the shaft rotating seal 24 and the front cavity of the shell 19. Under the action of the two labyrinth sealing structures, when the media on the left and right sides flow through the labyrinth cavity, each labyrinth cavity will reduce the flow rate of the leaked medium, increase the temperature in the cavity, and the pressure energy and kinetic energy in the medium will be converted into heat energy, which will eventually volatilize the medium. Even if very little medium flows out of the labyrinth cavity, it will be completely blocked by the third O-ring 25, thereby completely separating the media in the first channel and the second channel. In addition, the connecting inner tube 11 and the connecting shaft 18 under this structure are kept in synchronous operation, and there is no wear of the seal at all, which prevents damage to the seal. The connecting inner tube adopts an O-ring designed on the cone at one end for sealing, and a double labyrinth with an O-ring for sealing at the other end to ensure the sealing reliability, and the middle section of the connecting inner tube is designed with a disc spring to compensate for the sealing of the cone and provide the conical body with a self-aligning preload, which can effectively ensure the concentricity of the connecting inner tube and play a shock-absorbing and buffering role. In the floating state, it always keeps synchronous operation with all transmission components, avoiding wear and damage of the seal, increasing the service life, and facilitating maintenance and replacement.
[0034] It should be noted that the above invention content and specific implementation methods are intended to demonstrate the practical application of the technical solution provided by the present invention and should not be interpreted as limiting the scope of protection of the present invention. Those skilled in the art can make various modifications, equivalent substitutions or improvements within the spirit and principles of the present invention. The scope of protection of the present invention shall be subject to the attached claims.
Claims
1. A rotary sealing device for an aluminum battery composite calender, characterized in that: It comprises a first connecting flange (4), a second connecting flange (9), a connecting inner tube (11) and a connecting rotating shaft (18), wherein: The left end of the first connecting flange (4) is inserted with the equipment roller (1), and the inner end surface of the first connecting flange (4) in contact with the equipment roller (1) is provided with a first mounting hole, and the end surface of the equipment roller (1) is provided with a first threaded hole, and a first hexagon socket bolt (6) passes through the first mounting hole and is threadedly connected in the first threaded hole, so that the first connecting flange (4) is fixedly connected to the equipment roller (1), and the first hexagon socket bolt (6) is made of stainless steel and immersed in the medium of the first connecting flange (4); A second connecting flange (9) is inserted at the right end of the first connecting flange (4); the second connecting flange (9) and the lower side of the first connecting flange (4) are connected via a first external hexagonal bolt (30); and the second connecting flange (9) and the upper side of the first connecting flange (4) are connected via a first synchronization pin (8); The left end of the second connecting flange (9) is provided with an internal thread for assembly and connection with the external thread of the inner tube (2) of the equipment. The right end of the second connecting flange (9) is provided with an internal cone. The left end of the connecting inner tube (11) is provided with an external cone. The external cone of the connecting inner tube (11) is embedded in the internal cone of the second connecting flange (9). A second mounting groove is provided on the outer wall of the external cone. The second O-ring (10) is embedded in the second mounting groove and contacts the inner wall of the second connecting flange (9) to play a sealing role. The connecting shaft (18) is sleeved outside the connecting inner tube (11), and the connecting shaft (18) is inserted into the right end of the second connecting flange (9). The lower side of the connecting shaft (18) and the second connecting flange (9) are connected by a second external hexagonal bolt (29), and the upper side of the connecting shaft (18) and the second connecting flange (9) are connected by a second synchronization pin (14); The connecting inner tube (11) is fixedly connected to a limit block (17) by means of a fastening screw (16); a butterfly spring (28) is provided between the limit block (17) and the connecting shaft (18) to perform a pre-tightening effect so that the outer cone of the connecting inner tube (11) and the inner cone of the second connecting flange (9) are always in a fitted state; A plurality of raised sheet structures are arranged on the mating surfaces at different levels where the right end of the connecting inner tube (11) contacts the connecting shaft (18), and a plurality of recessed groove structures are arranged on the mating surfaces at different levels on the connecting shaft (18), so that the sheet structures and groove structures that are spaced apart and matched with each other form two left and right labyrinth seal structures (M); a third installation groove is provided on the connecting shaft (18) located between the two labyrinth seal structures, and a third O-type sealing ring (25) is embedded in the third installation groove and contacts the outer wall of the connecting inner tube (11) to play a sealing role; The right end of the connecting shaft (18) is connected to the equipment transmission shaft (21) through a second key bar (20), so that the connecting shaft (18) rotates synchronously with the equipment transmission shaft (21), and then the connecting shaft (18), the connecting inner tube (11), the second connecting flange (9), the first connecting flange (4), the equipment roller (1) and the equipment inner tube (2) rotate synchronously.
2. The rotary sealing device for the aluminum battery composite calender according to claim 1, characterized in that: The inner wall of the first connecting flange (4) is provided with a first installation groove, and the first O-type sealing ring (5) is embedded in the first installation groove and contacts the outer wall of the equipment roller (1) to play the role of sealing the medium.
3. The rotary sealing device for the aluminum battery composite calender according to claim 1, characterized in that: A first key strip (3) is provided between the upper side of the equipment roller (1) and the first connecting flange (4) to eliminate the rotation angle difference caused by the gap between the first hexagon socket bolt (6) and the first mounting hole.
4. The rotary sealing device for the aluminum battery composite calender according to claim 1, characterized in that: A sealing gasket (7) is arranged between the end surface of the second connecting flange (9) and the first connecting flange (4), so that the sealing gasket (7) plays a sealing role by being squeezed by the end surface of the second connecting flange (9).
5. The rotary sealing device for aluminum battery composite calender according to claim 1, characterized in that: The first external hexagonal bolt (30) is connected to the axial hole of the second connecting flange (9) by cooperation, the first external hexagonal bolt (30) is connected to the first connecting flange (4) by threaded engagement, the first synchronization pin (8) is connected to the second connecting flange (9) by threaded engagement, and the first synchronization pin (8) is connected to the axial hole of the first connecting flange (4) by cooperation, so as to eliminate the rotation angle difference between the second connecting flange (9) and the first connecting flange (4).
6. The rotary sealing device for the aluminum battery composite calender according to claim 1, characterized in that: A fourth installation groove is provided on the outer wall of the connecting shaft (18), and a fourth O-type sealing ring (12) is embedded in the fourth installation groove and contacts the inner wall of the second connecting flange (9) to play the role of sealing the medium.
7. The rotary sealing device for the aluminum battery composite calender according to claim 1, characterized in that: The second external hexagonal bolt (29) is connected to the shaft hole of the connecting shaft (18) by cooperation, the second external hexagonal bolt (29) is screwed and connected to the second connecting flange (9) by thread, the second synchronization pin (14) is screwed and connected to the connecting shaft (18) by thread, the second synchronization pin (14) is matched with the shaft hole of the second connecting flange (9) to eliminate the rotation angle difference between the connecting shaft (18) and the second connecting flange (9).
8. The rotary sealing device for the aluminum battery composite calender according to claim 1, characterized in that: A pressure cover (15) is sleeved on the connecting inner tube (11), the pressure cover (15) is located on the left side of the limit block (17), and the pressure cover (15) is fixedly connected to the connecting shaft (18) through a second hexagon socket bolt (13).
9. The rotary sealing device for aluminum battery composite calender according to claim 1, characterized in that: The outer sleeve of the connecting shaft (18) is provided with a housing (19), a shaft rotating seal ring (24) is provided between the housing (19) and the connecting shaft (18), and a rotation-stopping hole is provided on the housing (19) so that when the connecting shaft (18) rotates, the housing (19) remains stationary.
10. The rotary sealing device for the aluminum battery composite calender according to claim 9, characterized in that: The left end of the housing (19) is assembled with the connecting shaft (18) through a deep groove ball bearing (27), the right side of the deep groove ball bearing (27) is limited by a first shaft elastic retaining ring (26), and the first shaft elastic retaining ring (26) is embedded in the connecting shaft (18), and the right end of the housing (19) is assembled with the connecting shaft (18) through a ball bearing (23), the right side of the ball bearing (23) is limited by a second shaft elastic retaining ring (22), and the second shaft elastic retaining ring (22) is embedded in the connecting shaft (18).