Novel extraction bearing device

Abstract

The utility model relates to a novel extraction bearing device, which belongs to the technical field of diaphragm production, and comprises: a hydrostatic bearing assembly, which is composed of an inner ring and an outer ring, and a gap is arranged between the inner ring and the outer ring; the bearing medium supply system is used for injecting a pressurized liquid medium into the gap; and the power transmission assembly transmits power to the extraction roller through a non-contact coupling. The hydrostatic bearing assembly is adopted to replace a traditional ceramic bearing, a pressurized liquid medium is injected into the gap through the bearing medium supply system to serve as a bearing medium, a rolling body structure is eliminated, and the problems that the ceramic bearing is fragile and poor in bearing capacity are solved. In addition, non-contact driving of the power transmission assembly is achieved through a magnetic coupling, reduction of mechanical abrasion is facilitated, and the service life of the device is prolonged conveniently.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of diaphragm production, in particular to a novel extraction bearing device. BACKGROUND

[0002] At present, the lower row bearing of the extraction roller in the lithium battery diaphragm industry is mainly ceramic bearing because it is immersed in dichloromethane liquid, and dichloromethane has strong corrosive property. However, ceramic bearing is easy to break and has poor carrying capacity, and the service life cannot well meet the use requirements of the production line. The frequent damage and regular replacement of ceramic bearing reduce the utilization rate of the production line and increase the operation and maintenance cost, which is not conducive to cost reduction. CONTENT OF THE UTILITY MODEL

[0003] In order to improve the problem of easy damage and short service life of ceramic bearing in the extraction equipment, and further improve the stability and economy of the equipment, the present application provides a novel extraction bearing device.

[0004] The novel extraction bearing device provided by the present application adopts the following technical scheme:

[0005] A novel extraction bearing device comprises:

[0006] The static pressure bearing assembly is composed of an inner ring and an outer ring, and a gap is arranged between the inner ring and the outer ring;

[0007] The carrying medium supply system is used for injecting pressurized liquid medium into the gap as carrying medium;

[0008] The power transmission assembly transmits power to the extraction roller through a non-contact coupling.

[0009] By adopting the above technical scheme, the static pressure bearing assembly is used to replace the traditional ceramic bearing, and the carrying medium supply system is used to inject pressurized liquid medium into the gap as carrying medium, so that the rolling body structure is eliminated, and the problems of easy breakage and poor carrying capacity of ceramic bearing are solved. In addition, the power transmission assembly realizes non-contact driving through the magnetic coupling, which is conducive to reducing mechanical wear and facilitating the improvement of the service life of the device.

[0010] Optionally, the liquid medium is dichloromethane.

[0011] By adopting the above technical scheme, the selection of dichloromethane as the liquid medium not only makes full use of the existing process conditions, but also realizes the core advantages of high carrying capacity and low friction through its physical properties (density, viscosity) and chemical stability, while greatly reducing the maintenance cost, which meets the dual demands of equipment reliability and economy in lithium battery diaphragm production.

[0012] Optionally, the inner ring and the outer ring are made of corrosion-resistant metal material and are plated with hard chromium on the surface.

[0013] By adopting the technical scheme, through the synergistic effect of the corrosion-resistant metal base material and the hard chromium plated surface, the design not only solves the pain points of the traditional ceramic bearing, such as easy to break and poor corrosion resistance, but also improves the load capacity, wear resistance and service life of the static pressure bearing assembly, and finally realizes the goal of cost reduction and efficiency increase.

[0014] Optionally, the power transmission assembly comprises a magnetic coupling and a synchronous pulley, and the magnetic coupling is connected between the shaft head of the extraction roller and the synchronous pulley.

[0015] By adopting the technical scheme, the combination design of the magnetic coupling and the synchronous pulley perfectly adapts to the corrosive and high-pressure working conditions in the production of lithium battery separators through non-contact transmission, high sealing performance and low maintenance requirements, solves the problems of wear, leakage and frequent maintenance of the traditional power transmission structure, and significantly improves the reliability, economy and production efficiency of the equipment.

[0016] Optionally, the bearing medium supply system comprises a pump device and a pressure adjusting mechanism for dynamically adjusting the pressure of the liquid medium in the gap.

[0017] By adopting the technical scheme, the synergistic design of the pump device and the pressure adjusting mechanism solves the problems of high energy consumption, poor adaptability and frequent maintenance of the traditional bearing medium supply system through dynamic pressure closed-loop control, significantly improves the load stability, energy efficiency ratio and equipment life of the static pressure bearing assembly, and adapts to the requirements of high corrosion and multiple working conditions in the production of lithium battery separators.

[0018] Optionally, it also comprises left and right oppositely arranged wall plates, and the static pressure bearing assembly is installed on the wall plates through the mounting seat, and the two end shafts of the extraction roller are respectively supported by the static pressure bearing assembly.

[0019] By adopting the technical scheme, the modular design of the wall plate and the mounting seat facilitates quick assembly and disassembly, reduces the installation complexity; during maintenance, the single-sided wall plate or mounting seat can be directly disassembled, without the need for overall shutdown, reducing the interruption time of the production line.

[0020] Optionally, the synchronous pulley is connected with the magnetic coupling through a rotating shaft, the rotating shaft is supported by a bearing seat, and the rotating shaft and the bearing seat are rotationally connected.

[0021] By adopting the technical scheme, the rotating shaft is rotationally supported by the bearing seat, ensuring that the axes of the synchronous pulley and the magnetic coupling are strictly aligned, reducing the transmission error caused by eccentricity or vibration; in addition, the synchronous pulley and the magnetic coupling are indirectly connected through the rotating shaft, reducing the friction loss of the directly contacted components (such as the wear of the chain wheel in the traditional chain transmission), which is conducive to prolonging the service life of the synchronous pulley and the magnetic coupling.

[0022] Optionally, the inner ring of the hydrostatic bearing assembly is fixedly connected to the shaft head of the extraction roller, and the outer ring of the hydrostatic bearing assembly is fixed to the wall plate by a mounting base.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. This application uses a hydrostatic bearing assembly to replace the traditional ceramic bearing. A pressurized liquid medium is injected into the gap via a bearing medium supply system, eliminating the rolling element structure and solving the problems of fragility and poor load-bearing capacity of ceramic bearings. Furthermore, the power transmission assembly achieves non-contact drive through a magnetic coupling, which helps reduce mechanical wear and improves the service life of the device.

[0025] 2. In this application, dichloromethane is used as the liquid medium, which not only makes full use of the existing process conditions, but also achieves the core advantages of high load-bearing capacity and low friction through its physical properties (density, viscosity) and chemical stability, while significantly reducing maintenance costs, thus meeting the dual requirements of equipment reliability and economy in lithium battery separator production.

[0026] 3. Through the synergistic effect of corrosion-resistant metal substrate and hard chrome plating on the surface, this design not only solves the pain points of traditional ceramic bearings being fragile and lacking corrosion resistance, but also improves the load-bearing capacity, wear resistance and service life of hydrostatic bearing assemblies, ultimately achieving the goal of cost reduction and efficiency improvement. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of a novel extraction bearing device according to an embodiment of this application.

[0028] Figure 2 This is a control principle diagram illustrating the medium supply system in the embodiments of this application.

[0029] Explanation of reference numerals in the attached drawings: 1. Hydrostatic bearing assembly; 11. Inner ring; 12. Outer ring; 13. Clearance; 2. Bearing medium supply system; 21. Pump device; 22. Pressure regulating mechanism; 221. Pressure sensor; 3. Power transmission assembly; 31. Magnetic coupling; 32. Synchronous pulley; 4. Extraction roller; 5. Wall plate; 6. Mounting base; 7. Rotating shaft; 8. Bearing housing. Detailed Implementation

[0030] The following combination Figure 1 and Figure 2 This application will be described in further detail below.

[0031] Example:

[0032] This application discloses a novel bearing extraction device. (Refer to...) Figure 1A novel extraction bearing device includes a hydrostatic bearing assembly 1, a bearing medium supply system 2, and a power transmission assembly 3. The hydrostatic bearing assembly 1 includes an inner ring 11 and an outer ring 12, with a gap 13 between the inner ring 11 and the outer ring 12. The bearing medium supply system 2 is used to inject pressurized liquid medium into the gap 13. The power transmission assembly 3 transmits power to the extraction roller 4 through a non-contact coupling.

[0033] This extraction bearing device replaces the traditional ceramic bearing with a hydrostatic bearing assembly 1. A pressurized liquid medium is injected into the gap 13 via a bearing medium supply system 2, eliminating the rolling element structure and solving the problems of fragility and poor load-bearing capacity of ceramic bearings. Furthermore, the power transmission assembly 3 achieves non-contact drive via a magnetic coupling 31, which helps reduce mechanical wear and extends the device's service life.

[0034] Reference Figure 1 The liquid medium is dichloromethane. Thus, on the one hand, dichloromethane is an essential solvent in the extraction process during lithium battery separator production. Directly using dichloromethane as the bearing medium for the hydrostatic bearing assembly 1 eliminates the need to introduce other liquids, avoiding compatibility issues (such as contamination or chemical reaction risks) caused by medium switching and simplifying system design. On the other hand, dichloromethane has a high density (approximately 1.33 g / cm³). 3 Under pressure, dichloromethane forms a stable liquid bearing layer, supporting the weight of the extraction roller 4 through hydrostatic pressure. Its load-bearing capacity is significantly higher than that of traditional ceramic bearings with rolling elements, making it particularly suitable for high-pressure, high-load conditions. Furthermore, dichloromethane has a low viscosity, resulting in low flow resistance in the gap 13. This helps reduce frictional losses during bearing rotation, lowers maintenance costs, and also reduces energy consumption, improving overall energy efficiency.

[0035] Reference Figure 1 The inner ring 11 and outer ring 12 are made of corrosion-resistant metal and plated with hard chrome. In this embodiment, the inner ring 11 and outer ring 12 are made of stainless steel. Thus, on the one hand, dichloromethane is a highly corrosive organic solvent; using corrosion-resistant metal materials can resist the erosion of dichloromethane, while the hard chrome plating further forms a dense protective layer, isolating the substrate from direct contact with the corrosive medium, effectively preventing pitting corrosion, uniform corrosion, and other problems, and extending the service life of the hydrostatic bearing assembly 1 in corrosive environments. On the other hand, the hard chrome plating layer helps improve the wear resistance of the hydrostatic bearing assembly 1. During operation, the inner ring 11 is fixed to the roller shaft and rotates at high speed; the plating layer reduces frictional loss, preventing the gap 13 from increasing or failing due to long-term wear. Furthermore, since the gap 13 needs to withstand the pressurized dichloromethane liquid from the pump, the high strength of the hard chrome plating layer can resist the liquid pressure impact, preventing surface deformation or peeling, and ensuring that the hydrostatic bearing assembly 1 maintains stable load-bearing capacity under high pressure.

[0036] Reference Figure 1 The power transmission assembly 3 includes a magnetic coupling 31 and a synchronous pulley 32. The synchronous pulley 32 is connected to a drive motor, and the magnetic coupling 31 is connected between the shaft of the extraction roller 4 and the synchronous pulley 32. The synchronous pulley 32 is connected to the output end of the drive motor via a synchronous belt. In use, the magnetic coupling 31 transmits torque through magnetic field coupling, eliminating the need for physical contact and completely avoiding the wear problems caused by friction in traditional mechanical couplings. In the corrosive environment of dichloromethane, traditional metal couplings are prone to corrosion, rusting, or jamming, while the non-contact characteristic of the magnetic coupling 31 significantly extends its service life and reduces maintenance frequency. In addition, the magnetic coupling 31 enables completely sealed transmission, preventing dichloromethane liquid from leaking from the shaft of the extraction roller 4 and protecting the drive motor and other sensitive components from corrosive media.

[0037] Reference Figure 1 and Figure 2 The medium supply system 2 includes a pump unit 21 and a pressure regulating mechanism 22, used to dynamically regulate the pressure of the liquid medium within the gap 13. The pressure regulating mechanism 22 monitors the pressure of the liquid medium in the gap 13 in real time via a pressure sensor 221 and dynamically adjusts the output pressure of the pump unit 21 in conjunction with the sensor. On one hand, this ensures that the pressure always matches the actual working conditions, maintaining the stability of the liquid-bearing layer and preventing bearing vibration or failure due to pressure imbalance. On the other hand, it enables on-demand pressure adjustment, reducing the ineffective power consumption of the pump unit 21 and decreasing the circulation of dichloromethane, thus achieving energy saving and consumption reduction. Furthermore, dynamic pressure control prevents the gap 13 from being in a state of overpressure or underpressure for extended periods, reducing mechanical impact on the inner ring 11 and outer ring 12.

[0038] Reference Figure 1 The extraction bearing device also includes left and right opposing wall plates 5. The two ends of the extraction roller 4 are fixedly connected to the inner ring 11 of the corresponding hydrostatic bearing assembly 1, and the outer ring 12 of the hydrostatic bearing assembly 1 is fixed to the wall plate 5 by the mounting base 6. In this way, the modular design of the wall plate 5 and the mounting base 6 facilitates quick assembly and disassembly, reducing installation complexity; during maintenance, one side of the wall plate 5 or the mounting base 6 can be directly disassembled without stopping the entire machine, reducing production line downtime.

[0039] Reference Figure 1The synchronous pulley 32 is connected to the magnetic coupling 31 via a rotating shaft 7. The rotating shaft 7 is supported by a bearing housing 8, and the rotating shaft 7 is rotatably connected to the bearing housing 8. In this way, the rotating shaft 7 is rotatably supported by the bearing housing 8, ensuring that the axes of the synchronous pulley 32 and the magnetic coupling 31 are strictly aligned, reducing transmission errors caused by eccentricity or vibration. In addition, the synchronous pulley 32 and the magnetic coupling 31 are indirectly connected via the rotating shaft 7, reducing frictional losses of directly contacting parts (such as sprocket wear in traditional chain drives), which helps to extend the service life of the synchronous pulley 32 and the magnetic coupling 31.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A novel bearing extraction device, characterized in that, include: The hydrostatic bearing assembly (1) is composed of an inner ring (11) and an outer ring (12), and a gap (13) is provided between the inner ring (11) and the outer ring (12); A carrier medium supply system (2) is used to inject pressurized liquid medium into the gap (13); The power transmission assembly (3) transmits power to the extraction roller (4) via a non-contact coupling.

2. The novel extraction bearing device according to claim 1, characterized in that: The liquid medium is dichloromethane.

3. The novel extraction bearing device according to claim 2, characterized in that: The inner ring (11) and outer ring (12) are made of corrosion-resistant metal and are plated with hard chrome.

4. The novel extraction bearing device according to claim 1, characterized in that: The power transmission assembly (3) includes a magnetic coupling (31) and a synchronous pulley (32), wherein the magnetic coupling (31) is connected between the shaft of the extraction roller (4) and the synchronous pulley (32).

5. The novel extraction bearing device according to claim 1, characterized in that: The carrier medium supply system (2) includes a pump device (21) and a pressure regulating mechanism (22) for dynamically regulating the pressure of the liquid medium in the gap (13).

6. The novel extraction bearing device according to claim 1, characterized in that: It also includes wall panels (5) arranged opposite each other on the left and right. The hydrostatic bearing assembly (1) is mounted on the wall panel (5) via a mounting base (6). The two ends of the extraction roller (4) are supported by the hydrostatic bearing assembly (1).

7. The novel extraction bearing device according to claim 4, characterized in that: The synchronous pulley (32) is connected to the magnetic coupling (31) via a rotating shaft (7). The rotating shaft (7) is supported by a bearing seat (8), and the rotating shaft (7) is rotatably connected to the bearing seat (8).

8. A novel extraction bearing device according to claim 6, characterized in that: The inner ring (11) of the hydrostatic bearing assembly (1) is fixedly connected to the shaft head of the extraction roller (4), and the outer ring (12) of the hydrostatic bearing assembly (1) is fixed to the wall plate (5) by the mounting base (6).

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