Lubricating and cooling device for bearing chamber of heating roller

Abstract

The invention provides a heating roller bearing chamber lubricating and cooling device which comprises a cooling assembly and a bearing assembly, the bearing assembly is connected with an equipment vertical plate, and the bearing assembly supports an electromagnetic heating roller to rotate. The bearing assembly comprises a bearing seat fixed to the equipment vertical plate, a plurality of bearings arranged in the bearing seat, a first check ring and a second check ring, the first check ring and the second check ring are arranged between the adjacent bearings, and the two adjacent bearings, the first check ring and the second check ring form a lubricating chamber. The cooling assembly comprises an annular cooling groove formed in the bearing seat and a cooling liquid conveying pipeline communicated with the annular cooling groove, and cooling liquid flows in the annular cooling groove and the cooling liquid conveying pipeline to take away heat of the bearing. According to the heating roller bearing chamber lubricating and cooling device, the temperature of the bearing is reduced, the service life of the bearing is prolonged, and the stability of a transmission system is improved.

Description

Technical Field

[0001] The present application belongs to the field of bearings, and in particular relates to a heating roller bearing chamber lubrication and cooling device. Background Art

[0002] The new energy battery industry refers to battery products and their related industrial chains that store and release energy in an electrochemical manner. These batteries are mainly used in new energy vehicles, energy storage systems, portable electronic devices, etc. New energy vehicles include pure electric vehicles (BEV), plug-in hybrid electric vehicles (PHEV) and fuel cell vehicles (FCEV); energy storage systems refer to systems used for grid peak regulation, renewable energy storage and home / commercial energy storage, such as mobile batteries; portable electronic devices include mobile phones, laptops, etc.

[0003] Lithium batteries are widely used because of their high power and high energy density. The pole roll is the main component of lithium batteries, so its performance directly affects the quality of the battery. The pole roll raw materials and processing production process are prone to moisture, and high moisture has a certain impact on the quality of the battery, so it is necessary to use certain technologies to quickly remove the moisture and control the moisture within a certain standard range. Electromagnetic roller heating is an efficient heating technology and the most advanced heating method in the industry. Combined with other technologies, it can achieve rapid removal of moisture from the pole roll. The electromagnetic heating roller is a heating roller made according to the principle of electromagnetic induction heating of metals. It can achieve rapid heating and high heating temperature, which can reach 600°C. In addition, the temperature control accuracy of electromagnetic roller heating is high. The foil rotates and moves on the surface of the heating roller, evenly absorbing heat to achieve the purpose of heating. The bearing is used to support the heating roller. The heating roller works under high temperature. The bearing is very susceptible to heat. The bearing is in a high temperature environment for a long time, which causes the hardness, strength and wear resistance of the bearing material to change, thereby affecting the bearing's load-bearing capacity; high temperature causes thermal expansion of the bearing parts, resulting in reduced clearance, increased friction and wear, and even causing the bearing to get stuck; under high temperature conditions, the oxidation reaction of the metal surface is accelerated, resulting in corrosion and rust on the bearing surface, affecting its normal operation. Therefore, the service life of the bearing is short, and the bearing needs to be replaced frequently, increasing economic costs. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a heating roller bearing chamber lubrication and cooling device, which reduces the bearing temperature, prolongs the bearing service life and improves the stability of the transmission system.

[0005] The present invention provides a heating roller bearing chamber lubrication and cooling device, which includes a cooling component and a bearing component. The bearing component is connected to a device vertical plate, and the bearing component supports the electromagnetic heating roller to rotate. The bearing component includes a bearing seat fixed on the device vertical plate, a plurality of bearings arranged in the bearing seat, and a retaining ring 1 and a retaining ring 2 arranged between adjacent bearings. Two adjacent bearings, the retaining ring 1 and the retaining ring 2 form a lubrication chamber. The cooling component includes an annular cooling groove opened on the bearing seat, and a coolant delivery pipeline connected to the annular cooling groove. The coolant flows in the annular cooling groove and the coolant delivery pipeline to take away the heat of the bearing.

[0006] Furthermore, the bearing seat includes a cylindrical body and a flange surrounding the outer circumference of the cylindrical body. A port of the cylindrical body is provided with a circular ring connected to the inner wall of the cylindrical body. An annular cooling groove is provided on the circular ring. A small sealing groove is provided on the inner side of the annular cooling groove. A large sealing groove is provided on the outer side of the annular cooling groove. A threaded hole is provided on the bearing seat on the inner side of the small sealing groove and the outer side of the large sealing groove. An oil inlet hole for lubricating grease to enter is provided on the cylindrical body. The oil inlet hole is connected to the oil nozzle. An annular groove is provided on the inner wall of the end of the bearing seat away from the circular ring.

[0007] Furthermore, a small sealing ring is arranged in the small sealing groove, a large sealing ring is arranged in the large sealing groove, the thickness of the small sealing ring is greater than the depth of the small sealing groove, and the thickness of the large sealing ring is greater than the depth of the large sealing groove.

[0008] Furthermore, an annular pressure cover for covering the annular cooling groove is provided on one side of the bearing seat, and a through hole one which is coaxial with the threaded hole is provided on the annular pressure cover.

[0009] Furthermore, a coolant inlet and a coolant outlet connected to the annular cooling groove are provided on the cylindrical body, the coolant inlet and the coolant outlet are arranged opposite to each other, and the coolant inlet and the coolant outlet are connected to the coolant delivery pipeline through a water nozzle.

[0010] Furthermore, the coolant delivery pipeline includes a liquid inlet main pipe, a liquid return main pipe and a liquid inlet pipe connected between the liquid inlet main pipe and the liquid return main pipe, and the liquid inlet pipe connects the multiple annular cooling grooves in sequence.

[0011] Furthermore, each bearing includes an inner ring that fits tightly with the roller shaft of the electromagnetic heating roller and rotates with the roller shaft, an outer ring assembled in the bearing seat, rolling bodies rotating between the inner ring and the outer ring, and a retaining frame for evenly spacing the rolling bodies.

[0012] Furthermore, there are two bearings, namely bearing one and bearing two. The outer ring of bearing one abuts against the circular ring, and the inner ring of bearing one abuts against the shaft inserted into the roller shaft groove with an elastic retaining ring. The roller shaft groove is opened on the surface of the roller shaft, and the outer ring of bearing two abuts against the hole inserted into the annular groove of the bearing seat with an elastic retaining ring.

[0013] Furthermore, retaining ring 1 and retaining ring 2 are arranged between bearing 1 and bearing 2, the diameter of retaining ring 1 is larger than the diameter of retaining ring 2, retaining ring 1 is arranged between the outer ring of bearing 1 and the outer ring of bearing 2, the outer ring surface of retaining ring 1 is close to the inner wall of the bearing seat, retaining ring 2 is arranged between the inner ring of bearing 1 and the inner ring of bearing 2, the inner ring surface of retaining ring 2 is close to the roller shaft, and retaining ring 1 is provided with oil inlet hole 2, and the position of oil inlet hole 2 corresponds to the position of oil inlet hole 1.

[0014] Furthermore, a sealing cover 1 is provided on the outer ring of bearing 1, and a sealing cover 2 is provided on the outer ring of bearing 2. Both sealing cover 1 and sealing cover 2 are annular plates, and the outer peripheries of the annular plates are respectively connected to the outer rings of bearing 1 and bearing 2, and the inner ring diameters of the annular plates are larger than the inner ring diameters of bearing 1 and bearing 2.

[0015] Beneficial effects of the present invention:

[0016] The invention provides a heating roller bearing chamber lubrication and cooling device. The annular cooling groove is arranged on the bearing seat. The annular cooling groove is connected with a liquid inlet pipe. The coolant enters the annular cooling groove through a coolant inlet and is then output through a coolant outlet. The coolant flows through a plurality of annular cooling grooves and then returns to the liquid return pipe. The liquid inlet pipe and the liquid return pipe are connected with a refrigeration device. This cycle is repeated to form a heat cycle, take away the heat of the bearing, and reduce the working temperature of the bearing. The bearing, the first retaining ring and the second retaining ring are arranged in the bearing seat. Two adjacent bearings, the first retaining ring and the second retaining ring form a lubrication chamber. Grease enters the lubrication chamber to play a lubricating role while absorbing the heat transferred to the roller shaft, reducing the bearing temperature and improving the durability. A small sealing ring, a large sealing ring and an annular pressure cover are arranged on both sides of the annular cooling groove. The annular pressure cover is tightly attached to the bearing seat. At the same time, the annular pressure cover squeezes the small sealing ring and the large sealing ring to seal the annular cooling groove to prevent the coolant from leaking. The shaft elastic retaining ring and the hole elastic retaining ring are arranged to limit the axial movement of the roller shaft, thereby ensuring the stable operation of the bearing. The invention provides a heating roller bearing chamber lubrication and cooling device, which uses the circulation of high temperature resistant grease and coolant to cool the bearing at the same time, thereby improving the cooling effect, extending the bearing life, reducing the bearing replacement frequency, and reducing the economic cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a schematic diagram of the connection of a heating roller bearing chamber lubrication and cooling device.

[0018] Figure 2 Schematic diagram of the coolant flow.

[0019] Figure 3 Schematic diagram of the connection between the roller shaft and the bearing assembly.

[0020] Figure 4 for Figure 3 main view.

[0021] Figure 5 for Figure 4 Cross-sectional view in the AA direction.

[0022] Figure 6 It is a structural schematic diagram of the bearing assembly from the first perspective.

[0023] Figure 7 It is a structural schematic diagram of the bearing assembly from a second perspective.

[0024] Figure 8 Schematic diagram of the bearing structure.

[0025] Fig. 9 This is a schematic diagram of the structure of an elastic retaining ring for a shaft.

[0026] Fig.10 It is a schematic diagram of the structure of the elastic retaining ring for hole.

[0027] Fig.11 A schematic diagram of the first-person perspective of the connection between two bearings.

[0028] Fig.12 A schematic diagram showing the connection of two bearings from a second perspective.

[0029] Fig.13 This is the front view of the bearing seat.

[0030] Fig.14 for Fig.13 A sectional stereogram taken along the middle BB direction.

[0031] Fig.15 Schematic diagram of the sealing ring.

[0032] Reference numerals:

[0033] 1. Cooling assembly; 1-1. Coolant delivery pipeline; 1-1-1. Liquid inlet main pipe; 1-1-2. Liquid return main pipe; 1-1-3. Liquid inlet pipe; 1-2. Annular cooling trough;

[0034] 2. Bearing assembly;

[0035] 2-1, bearing seat; 2-1-1, cylindrical body; 2-1-2, flange; 2-1-3, ring; 2-1-5, small sealing groove; 2-1-6, large sealing groove; 2-1-7, annular groove;

[0036] 2-2, bearing; 2-2-1, bearing one; 2-2-2, bearing two; 2-2-3, inner ring; 2-2-4, outer ring; 2-2-5, rolling element; 2-2-6, cage;

[0037] 2-3, retaining ring 1; 2-4, retaining ring 2;

[0038] 3. Equipment vertical plate; 4. Electromagnetic heating roller; 5. Lubrication chamber; 6. Oil inlet hole 1; 7. Oil nozzle; 8-1. Small sealing ring; 8-2. Large sealing ring; 9. Annular pressure cover; 9-1. Through hole 1; 10. Coolant inlet; 11. Coolant outlet; 12. Water nozzle; 13. Roller shaft; 14. Elastic retaining ring for shaft; 15. Elastic retaining ring for hole; 16. Oil inlet hole 2; 17-1. Sealing cover 1; 17-2. Sealing cover 2. DETAILED DESCRIPTION

[0039] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of this application.

[0040] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0041] like Figure 1-1 5, the present invention provides a heating roller bearing chamber lubrication and cooling device, which includes a cooling component 1 and a bearing component 2, the bearing component 2 is connected to the equipment vertical plate 3, the bearing component 2 supports the electromagnetic heating roller 4 to rotate, the bearing component 2 includes a bearing seat 2-1 fixed on the equipment vertical plate 3, a plurality of bearings 2-2 arranged in the bearing seat 2-1, and a retaining ring 1 2-3 and a retaining ring 2-4 arranged between adjacent bearings 2-2, two adjacent bearings 2-2, retaining rings 1 2-3 and retaining rings 2-4 form a lubrication chamber 5, the cooling component 1 includes an annular cooling groove 1-2 opened on the bearing seat 2-1, and a coolant delivery pipeline 1-1 connected to the annular cooling groove 1-2, and the coolant flows in the annular cooling groove 1-2 and the coolant delivery pipeline 1-1 to take away the heat of the bearing 2-2.

[0042] like Figure 1 As shown, in one embodiment, there are multiple bearing assemblies 2 distributed at different positions of the equipment vertical plate 3, and each bearing assembly 2 is connected to an electromagnetic heating roller 4 respectively.

[0043] like Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 1 3 and Figure 1As shown in FIG. 4, in one embodiment, the bearing seat 2-1 includes a cylindrical body 2-1-1, a flange 2-1-2 surrounding the outer circumference of the cylindrical body 2-1-1, a port of the cylindrical body 2-1-1 is provided with a ring 2-1-3 connected to the inner wall of the cylindrical body 2-1-1, the ring 2-1-3 is preferably integrally formed with the cylindrical body 2-1-1, an annular cooling groove 1-2 is provided on the ring 2-1-3, a small sealing groove 2-1-5 is provided on the inner side of the annular cooling groove 1-2, a large sealing groove 2-1-6 is provided on the outer side of the annular cooling groove 1-2, and the small sealing groove 2-1-5 is provided on the inner side of the annular cooling groove 1-2. 1-5 and the large sealing groove 2-1-6 are preferably circular, the small sealing groove 2-1-5 and the large sealing groove 2-1-6 can be, for example, multiple circles respectively, the depth of the annular cooling groove 1-2 is greater than the depth of the small sealing groove 2-1-5 and the large sealing groove 2-1-6, and a threaded hole 1 is provided on the bearing seat 2-1 on the inner side of the small sealing groove 2-1-5 and the outer side of the large sealing groove 2-1-6. The flange 2-1-2 is used to fix the bearing seat 2-1 on the equipment vertical plate 3, and an oil inlet hole 6 for lubricating grease to enter is opened on the cylindrical body 2-1-1, and the oil inlet hole 6 is connected to the oil nozzle 7.

[0044] like Figure 1 As shown in FIG. 4, in one embodiment, an annular groove 2-1-7 is formed on the inner wall of the end of the bearing seat 2-1 away from the ring 2-1-3.

[0045] like Figure 1 4 and Figure 1 As shown in FIG. 5 , in one embodiment, a small sealing ring 8-1 is provided in the small sealing groove 2-1-5, and a large sealing ring 8-2 is provided in the large sealing groove 2-1-6. The thickness of the small sealing ring 8-1 is slightly greater than the depth of the small sealing groove 2-1-5, for example, 3-4 mm at most. The thickness of the large sealing ring 8-2 is slightly greater than the depth of the large sealing groove 2-1-6, for example, 3-4 mm at most. The material of the small sealing ring 8-1 and the large sealing ring 8-2 can be, for example, rubber or polyurethane. The small sealing ring 8-1 and the large sealing ring 8-2 seal the annular cooling groove 1-2 to prevent leakage of the coolant.

[0046] like Figure 3 , Figure 5 , Figure 6 As shown, in one embodiment, an annular pressure cover 9 for covering the annular cooling groove 1-2 is provided on one side of the bearing seat 2-1, and a through hole 9-1 coaxial with the threaded hole is provided on the annular pressure cover 9. The bolt passes through the through hole 9-1 and is screwed into the threaded hole. During the process of tightening the bolt, the annular pressure cover 9 is tightly attached to the bearing seat 2-1, and at the same time, the annular pressure cover 9 squeezes the small sealing ring 8-1 and the large sealing ring 8-2 to seal the annular cooling groove 1-2.

[0047] like Figure 3 , Figure 4 , Figure 6 , Figure 7 and Figure 1 As shown in FIG. 3 , in one embodiment, a coolant inlet 10 and a coolant outlet 11 connected to the annular cooling groove 1-2 are provided on the cylindrical body 2-1-1. The coolant inlet 10 and the coolant outlet 11 are preferably arranged opposite to each other. The coolant inlet 10 and the coolant outlet 11 are connected to the coolant delivery pipeline 1-1 via a water nozzle 12.

[0048] like Figure 1 and Figure 2 As shown, in one embodiment, the cooling liquid delivery pipeline 1-1 includes a liquid inlet main pipe 1-1-1, a liquid return main pipe 1-1-2 and a liquid inlet pipe 1-1-3 connected between the liquid inlet main pipe 1-1-1 and the liquid return main pipe 1-1-2. The liquid inlet pipe 1-1-3 connects multiple annular cooling grooves 1-2 in sequence. The liquid inlet main pipe 1-1-1 and the liquid return main pipe 1-1-2 are both connected to a refrigeration device. The cooling liquid can be, for example, cooling water. After the cooling liquid enters the liquid inlet pipe 1-1-3 from the liquid inlet main pipe 1-1-1, the cooling liquid enters the annular cooling groove 1-2 through the cooling liquid inlet 10 and is output through the cooling liquid outlet 11. The cooling liquid flows through multiple annular cooling grooves 1-2 and then returns to the liquid return main pipe 1-1-2. This cycle is repeated to form a heat cycle, which takes away the heat of the bearing 2-2 and reduces the working temperature of the bearing 2-2.

[0049] like Figure 8 As shown, in one embodiment, each bearing 2-2 includes an inner ring 2-2-3 which is tightly matched with the roller shaft 13 of the electromagnetic heating roller 4 and rotates with the roller shaft 13, an outer ring 2-2-4 assembled in the bearing seat 2-1, rolling bodies 2-2-5 rotating between the inner ring 2-2-3 and the outer ring 2-2-4, and a retaining frame 2-2-6 for evenly spacing the rolling bodies 2-2-5. The rolling bodies 2-2-5 can be balls, for example. The retaining frame 2-2-6 is used to prevent the rolling bodies 2-2-5 from colliding with each other.

[0050] like Figure 5 , Figure 8 , Fig. 9 , Figure 1 0. Figure 1 1 and Fig.12 As shown, in one embodiment, there are two bearings 2-2, namely bearing 1 2-2-1 and bearing 2 2-2-2. Figure 5As a reference datum, bearing 1 2-2-1 is arranged on the right side of bearing 2-2-2, the outer ring of bearing 2-2-1 abuts against the ring 2-1-3, the inner ring of bearing 2-2-1 abuts against the shaft elastic retaining ring 14 inserted into the roller shaft groove, the roller shaft groove is provided on the surface of roller shaft 13, the outer ring of bearing 2-2-2 abuts against the hole elastic retaining ring 15 inserted into the annular groove 2-1-7 of bearing seat 2-1, the shaft elastic retaining ring 14 and the hole elastic retaining ring 15 are used to limit the axial movement of bearing 2-2 to ensure the stable operation of bearing 2-2, and the material of shaft elastic retaining ring 14 and hole elastic retaining ring 15 can be, for example, spring steel.

[0051] like Figure 5 , Figure 1 1 and Figure 1 As shown in FIG. 2, in one embodiment, retaining ring 1 2-3 and retaining ring 2-4 are arranged between bearing 1 2-2-1 and bearing 2-2-2, the diameter of retaining ring 1 2-3 is larger than the diameter of retaining ring 2-4, retaining ring 1 2-3 is arranged between the outer ring of bearing 1 2-2-1 and the outer ring of bearing 2-2-2, the outer ring surface of retaining ring 1 2-3 is close to the inner wall of bearing seat 2-1, retaining ring 2-4 is arranged between the inner ring of bearing 1 2-2-1 and the inner ring of bearing 2-2-2, the inner ring surface of retaining ring 2-4 is close to roller shaft 13, under the action of shaft elastic retaining ring 14 and hole elastic retaining ring 15, the outer ring of bearing 1 2-2-1 and the outer ring of bearing 2-2-2 squeeze retaining ring 1 2-3, the inner ring of bearing 1 2-2-1 and the inner ring of bearing 2-2-2 squeeze retaining ring 2-4, retaining ring 1 2-3 is provided with oil inlet hole 21 6, the position of the oil inlet hole 1 6 corresponds to the position of the oil inlet hole 1 6, the grease enters the lubrication chamber 5 through the oil nozzle 7, the oil inlet hole 1 6, and the oil inlet hole 2 1 6 in sequence, and penetrates into the bearing 2-2 to play a lubricating role, reduce wear, and extend the service life of the bearing. The grease adopts a gel-like high-temperature resistant grease. The heat transferred from the electromagnetic heating roller 4 to the bearing 2-2 is absorbed by the grease to achieve a cooling effect, thereby improving durability.

[0052] like Figure 5 , Figure 1 1 and Figure 1 As shown in FIG. 2, in one embodiment, a sealing cover 17-1 is provided on the outer ring of the bearing 1 2-2-1, and a sealing cover 17-2 is provided on the outer ring of the bearing 2-2-2. The sealing cover 17-1 and the sealing cover 17-2 are both annular plates, and the outer peripheries of the annular plates are respectively connected to the outer rings of the bearing 1 2-2-1 and the outer rings of the bearing 2-2-2, for example, as one piece. The inner ring diameter of the annular plate is larger than the inner ring diameter of the bearing 1 2-2-1 and the inner ring diameter of the bearing 2-2-2. The sealing cover 17-1 and the sealing cover 17-2 are used to reduce the leakage of lubricating grease.

[0053] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A heating roller bearing chamber lubrication and cooling device, comprising a cooling assembly (1) and a bearing assembly (2), wherein the bearing assembly (2) is connected to an equipment vertical plate (3), and the bearing assembly (2) supports an electromagnetic heating roller (4) for rotation, wherein the bearing assembly (2) comprises a bearing seat (2-1) fixed on the equipment vertical plate (3), a plurality of bearings (2-2) arranged in the bearing seat (2-1), and a retaining ring (2-3) and a retaining ring (2-4) arranged between adjacent bearings (2-2), wherein two adjacent bearings (2-2), the retaining ring (2-3) and the retaining ring (2-4) form a lubrication chamber (5), and the cooling assembly (1) comprises an annular cooling groove (1-2) provided on the bearing seat (2-1), and a coolant delivery pipeline (1-1) connected to the annular cooling groove (1-2), wherein the coolant flows in the annular cooling groove (1-2) and the coolant delivery pipeline (1-1) to take away the heat of the bearings (2-2).

2. The heating roller bearing chamber lubrication and cooling device according to claim 1, characterized in that: The bearing seat (2-1) comprises a cylindrical body (2-1-1), a flange (2-1-2) surrounding the outer circumference of the cylindrical body (2-1-1), a port of the cylindrical body (2-1-1) is provided with a ring (2-1-3) connected to the inner wall of the cylindrical body (2-1-1), an annular cooling groove (1-2) is opened on the ring (2-1-3), a small sealing groove (2-1-5) is provided inside the annular cooling groove (1-2), and the annular cooling groove A large sealing groove (2-1-6) is provided on the outer side of the bearing seat (2-1-2), a threaded hole is provided on the inner side of the small sealing groove (2-1-5) and the outer side of the large sealing groove (2-1-6), an oil inlet hole (6) for lubricating grease to enter is provided on the cylindrical body (2-1-1), the oil inlet hole (6) is connected to the oil nozzle (7), and an annular groove (2-1-7) is provided on the inner wall of the end of the bearing seat (2-1) away from the ring (2-1-3).

3. The heating roller bearing chamber lubrication and cooling device according to claim 2, characterized in that: A small sealing ring (8-1) is arranged in the small sealing groove (2-1-5), and a large sealing ring (8-2) is arranged in the large sealing groove (2-1-6). The thickness of the small sealing ring (8-1) is greater than the depth of the small sealing groove (2-1-5), and the thickness of the large sealing ring (8-2) is greater than the depth of the large sealing groove (2-1-6).

4. The heating roller bearing chamber lubrication and cooling device according to claim 2 or 3, characterized in that: An annular pressure cover (9) for covering the annular cooling groove (1-2) is provided on one side of the bearing seat (2-1), and a through hole (9-1) coaxial with the threaded hole is provided on the annular pressure cover (9).

5. The heating roller bearing chamber lubrication and cooling device according to claim 3, characterized in that: The cylindrical body (2-1-1) is provided with a cooling liquid inlet (10) and a cooling liquid outlet (11) which are in communication with the annular cooling groove (1-2); the cooling liquid inlet (10) and the cooling liquid outlet (11) are arranged opposite to each other; the cooling liquid inlet (10) and the cooling liquid outlet (11) are connected to the cooling liquid delivery pipeline (1-1) via a water nozzle (12).

6. The heating roller bearing chamber lubrication and cooling device according to claim 1, characterized in that: The cooling liquid delivery pipeline (1-1) comprises a liquid inlet main pipe (1-1-1), a liquid return main pipe (1-1-2), and a liquid inlet pipe (1-1-3) connected between the liquid inlet main pipe (1-1-1) and the liquid return main pipe (1-1-2), and the liquid inlet pipe (1-1-3) sequentially connects a plurality of annular cooling grooves (1-2).

7. The heating roller bearing chamber lubrication and cooling device according to claim 1, characterized in that: Each bearing comprises an inner ring (2-2-3) which is tightly matched with the roller shaft (13) of the electromagnetic heating roller (4) and rotates with the roller shaft (13), an outer ring (2-2-4) assembled in the bearing seat (2-1), a rolling body (2-2-5) rotating between the inner ring (2-2-3) and the outer ring (2-2-4), and a retaining frame (2-2-6) for evenly spacing the rolling bodies (2-2-5).

8. The heating roller bearing chamber lubrication and cooling device according to claim 7, characterized in that: There are two bearings (2-2), namely bearing 1 (2-2-1) and bearing 2 (2-2-2). The outer ring of bearing 1 (2-2-1) is in contact with the annular ring (2-1-3), the inner ring of bearing 1 (2-2-1) is in contact with the shaft inserted into the roller groove by means of an elastic retaining ring (14), the roller groove is provided on the surface of the roller shaft (13), and the outer ring of bearing 2 (2-2-2) is in contact with the hole of the annular groove (2-1-7) inserted into the bearing seat (2-1) by means of an elastic retaining ring (15).

9. The heating roller bearing chamber lubrication and cooling device according to claim 7 or 8, characterized in that: The retaining ring 1 (2-3) and the retaining ring 2 (2-4) are arranged between the bearing 1 (2-2-1) and the bearing 2 (2-2-2); the diameter of the retaining ring 1 (2-3) is larger than the diameter of the retaining ring 2 (2-4); the retaining ring 1 (2-3) is arranged between the outer ring of the bearing 1 (2-2-1) and the outer ring of the bearing 2 (2-2-2); the outer ring surface of the retaining ring 1 (2-3) is close to the inner wall of the bearing seat (2-1); the retaining ring 2 (2-4) is arranged between the inner ring of the bearing 1 (2-2-1) and the inner ring of the bearing 2 (2-2-2); the inner ring surface of the retaining ring 2 (2-4) is close to the roller shaft (13); and the retaining ring 1 (2-3) is provided with an oil inlet hole 2 (16).

10. The heating roller bearing chamber lubrication and cooling device according to claim 9, characterized in that: A sealing cover 1 (17-1) is provided on the outer ring of the bearing 1 (2-2-1), and a sealing cover 2 (17-2) is provided on the outer ring of the bearing 2 (2-2-2). The sealing cover 1 (17-1) and the sealing cover 2 (17-2) are both annular plates, and the outer peripheries of the annular plates are respectively connected to the outer rings of the bearing 1 (2-2-1) and the bearing 2 (2-2-2). The inner ring diameter of the annular plate is larger than the inner ring diameter of the bearing 1 (2-2-1) and the inner ring diameter of the bearing 2 (2-2-2).

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