A corrosion protection device for POF film roller bearings

Abstract

This utility model discloses a corrosion protection device for POF film roller bearings, relating to the field of thin film processing equipment technology. It includes a roller with a protective cover on one side, the cover being fitted over the outside of the roller shaft and rotatably connected to the roller. A bearing is fixedly mounted on one side of the roller, located inside the protective cover. The mounting area of ​​the protective cover and the bearing forms a closed chamber. A connecting ring is provided inside the protective cover, and an air outlet is connected to the side of the connecting ring near the bearing. The air outlet blows air towards the bearing surface. An air inlet assembly is provided at the upper end of the protective cover for supplying gas into the connecting ring. This application has the effect of extending the service life of the bearing.

Description

Technical Field

[0001] This utility model relates to the field of thin film processing equipment technology, and in particular to a corrosion protection device for POF film roller bearings. Background Technology

[0002] POF film is widely used in the packaging industry. With the continuous development of automated production technology, the production and processing of POF film is gradually moving towards higher efficiency and precision. As a key component in the production process, the stable operation of the POF film roller plays a crucial role in ensuring product quality and production efficiency. The normal operation of the roller depends on the good performance of the bearings, and the service life and working condition of the bearings directly affect the reliability of the entire production system. Therefore, ensuring the normal operation of POF film roller bearings has become a key issue of continuous concern in the industry. Good bearing protection technology can effectively reduce equipment maintenance costs, minimize production stoppages caused by bearing failures, and thus improve the economic benefits and market competitiveness of enterprises.

[0003] Current protection methods typically involve applying protective grease to the bearing surface. This forms a dense protective film, reducing direct contact between ozone and moisture and the bearing. Applying protective grease involves first cleaning the bearing surface to remove impurities and oil, then evenly applying the grease to ensure complete coverage.

[0004] Regarding the aforementioned technologies, although an ozone fan is used to extract ozone during the cross-linked POF membrane manufacturing process, a high concentration of ozone still exists in the irradiation chamber in real time. Furthermore, the ozone, accompanied by moisture, has a strong corrosive effect on the roller bearings. The protective film coated with protective grease will gradually fail due to the strong oxidizing effect of ozone and the erosion caused by moisture during prolonged use, thus failing to provide continuous and effective protection for the bearings and leading to bearing damage. Utility Model Content

[0005] In order to extend the service life of bearings, this application provides a corrosion protection device for POF film roller bearings.

[0006] This application provides a corrosion protection device for POF film roller bearings, which adopts the following technical solution: A corrosion protection device for a POF film roller bearing includes a roller, a protective cover on one side of the roller, the protective cover being fitted onto the outside of the roller shaft and rotatably connected to the roller, a bearing fixed on one side of the roller, the bearing being located inside the protective cover, the installation area of ​​the protective cover and the bearing forming a closed chamber, a connecting ring inside the protective cover, an air outlet connected to the side of the connecting ring near the bearing, the air outlet blowing air in the direction of the bearing surface, and an air inlet assembly at the upper end of the protective cover for supplying gas into the connecting ring.

[0007] By adopting the above technical solution, the air intake assembly delivers gas into the connecting ring, and the gas is blown onto the bearing surface through the air outlet at a certain direction and pressure. This continuous airflow can blow away the bearing, forming a continuous and uniform airflow coverage layer, which can quickly blow away any trace amounts of ozone and moisture that may remain on the bearing surface, reducing the adhesion and accumulation of corrosive media on the bearing contact surface. At the same time, it can keep the bearing surface dry and clean, reduce the corrosive activity of ozone in humid environments, and extend the service life of the bearing.

[0008] Optionally, the air intake assembly includes a variable frequency fan, an air intake duct, and a hose. The variable frequency fan is located at the upper end of the protective cover. The air outlet of the variable frequency fan is connected to the air intake duct. The hose is located at the end of the air intake duct away from the variable frequency fan. The air intake duct passes through the protective cover and is connected to the hose. The end of the hose away from the air intake duct is connected to the connecting ring, and the hose and the connecting ring are rotatably connected.

[0009] By adopting the above technical solution, the variable frequency fan, as the core power source of the air intake assembly, possesses powerful air extraction and delivery capabilities. It can continuously and stably draw in outside air and deliver it through the intake duct and hose to the connecting ring, ultimately blowing it onto the bearing surface through the outlet nozzle. This stable airflow supply ensures that there is always sufficient gas around the bearing. The hose has a certain degree of flexibility, which can adapt to the relative movement between the protective cover and the connecting ring, reducing problems such as pipe rupture or airflow obstruction caused by rigid connections.

[0010] Optionally, a seal is provided between the air inlet duct and the protective cover. The seal is made of an elastic material and is used to seal the gap between the air inlet duct and the protective cover.

[0011] By adopting the above technical solution, the sealing element is made of elastic material, which can fit tightly against the connection surface of the air inlet pipe and the protective cover, achieving seamless sealing of the gap between the two. The sealing element can effectively reduce gas leakage from the gap, ensuring that the gas can enter the connecting ring through the hose according to the design path, and then be blown to the bearing surface through the air outlet, thus improving the gas utilization efficiency.

[0012] Optionally, a humidity sensor is fixed inside the protective cover. The humidity sensor is electrically connected to the variable frequency fan and is used to detect the humidity inside the protective cover.

[0013] By adopting the above technical solution, the humidity sensor is fixed inside the protective cover, which can directly and accurately monitor the humidity changes in the closed chamber and feed the humidity signal back to the variable frequency fan in real time, so that the variable frequency fan can adjust the speed according to the humidity, thereby improving the flexibility of the device.

[0014] Optionally, a connecting block is fixed at the upper end of the protective cover, and two positioning sleeves are provided inside the connecting block. The two positioning sleeves are symmetrically distributed with respect to the air inlet duct. A positioning rod is fixed on the side of the two positioning sleeves that are far apart from each other. The positioning rod is slidably connected to the connecting block in the transverse direction. An elastic element is sleeved on the outside of the positioning block. In its natural state, the elastic element drives the two positioning sleeves to move closer to each other. A handle is provided on the side of the positioning rod that is far away from the positioning sleeve. The handle is threadedly connected to the positioning rod.

[0015] By adopting the above technical solution, the two positioning sleeves are symmetrically distributed with respect to the air inlet duct. The elastic element provides a continuous clamping force in its natural state, which drives the positioning sleeves to move closer to each other and fit tightly against the outer wall of the air inlet duct. The clamping force is transmitted through the laterally sliding positioning rod, so that the two positioning sleeves cooperate to position the air inlet duct, reducing the probability of accidental movement of the air inlet duct and improving the stability of the device.

[0016] Optionally, a motor is fixedly mounted on the outside of the protective cover, and a lead screw is provided at the upper end of the bearing. The lead screw is rotatably connected to the protective cover, and the output shaft of the motor is fixed coaxially with the lead screw. A drive block is provided at one end of the lead screw, and the drive block is threadedly connected to the lead screw. A connecting ring is located on one side of the drive block and is rotatably connected to the drive block.

[0017] By adopting the above technical solution, when the motor starts, it drives the lead screw to rotate. The protective cover limits the drive block. The rotation of the lead screw drives the drive block to move laterally. The lateral movement of the drive block drives the connecting ring to move laterally, thereby driving the air outlet to move laterally. This facilitates the adjustment of the distance between the bearing and the air outlet, and improves the flexibility of the device.

[0018] Optionally, a disc is provided inside the protective cover, the disc is rotatably connected to the protective cover, a belt is provided between the disc and the connecting ring, the belt is rotatably connected to the disc and the connecting ring respectively, and a motor is fixed on the outside of the protective cover to drive the disc to rotate.

[0019] By adopting the above technical solution, the second motor drives the disc to rotate via the belt, which in turn drives the connecting ring and the air outlet to rotate synchronously, so that the airflow generated by the air outlet can fully cover the bearing, forming a dynamic airflow barrier, and more efficiently blowing away the ozone and water vapor remaining on the bearing surface.

[0020] Optionally, the protective cover has a maintenance observation window on its side wall. The protective cover and the maintenance observation window are rotatably connected. The maintenance observation window is made of transparent corrosion-resistant material and has a sealing ring embedded in its edge.

[0021] By adopting the above technical solution, the inspection and observation window is made of transparent and corrosion-resistant material. This allows operators to clearly observe the operating status of the equipment inside the protective cover without opening it. When maintenance is required, operators only need to open the observation window to directly access the relevant components of the equipment for maintenance, cleaning, and replacement of parts. The edge of the inspection and observation window is fitted with a sealing ring, which forms a tight seal with the rotating connection surface of the protective cover. This effectively seals the gap between the observation window and the protective cover, reducing the infiltration of high concentrations of ozone and moisture into the irradiation chamber through the gap.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The air intake assembly delivers gas into the connecting ring, and the gas is blown towards the bearing surface through the air outlet at a certain direction and pressure. This continuous airflow can blow away the bearing, forming a continuous and uniform airflow coverage layer, which can quickly blow away any trace amounts of ozone and moisture that may remain on the bearing surface, reducing the corrosive activity of ozone in humid environments and extending the service life of the bearing; 2. The humidity sensor is fixed inside the protective cover, which can directly and accurately monitor the humidity changes in the closed chamber and feed the humidity signal back to the variable frequency fan in real time, so that the variable frequency fan can adjust the speed according to the humidity, improving the flexibility of the device. 3. The seals can effectively reduce gas leakage from the gaps, ensuring that the gas can enter the connecting ring through the hose according to the design path, and then be blown to the bearing surface through the air outlet, thus improving the gas utilization efficiency. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a corrosion protection device for POF film roller bearings.

[0024] Figure 2 This is a cross-sectional schematic diagram designed to highlight the connection structure of the air intake duct.

[0025] Figure 3 yes Figure 2 An enlarged schematic diagram of part A in the middle.

[0026] Figure 4 This is a cross-sectional schematic diagram designed to highlight the connecting ring structure.

[0027] Explanation of reference numerals in the attached drawings: 1. Roller; 2. Bearing; 3. Protective cover; 31. Connecting ring; 311. Motor 1; 312. Lead screw; 313. Drive block; 314. Motor 2; 315. Disc; 316. Belt; 32. Humidity sensor; 33. Air outlet; 34. Inspection window; 4. Variable frequency fan; 41. Air inlet duct; 42. Hose; 43. Seal; 5. Connecting block; 51. Positioning sleeve; 52. Elastic element; 53. Handle; 54. Positioning rod. Detailed Implementation

[0028] The present application will be further described in detail below with reference to all the accompanying drawings.

[0029] This application discloses a corrosion protection device for POF film roller bearings. Example

[0030] Reference Figure 1 and Figure 2 A corrosion protection device for POF film roller bearings includes a roller 1, a bearing 2 fixedly mounted on one side of the roller 1, and a protective cover 3 fitted over the outside of the roller 1. The protective cover 3 is located at the upper end of the roller 1 on the ground, and the bearing 2 is located inside the protective cover 3. The protective cover 3 and the installation area of ​​the bearing 2 form a closed chamber to reduce the infiltration of external corrosive gases and reduce corrosion of the bearing 2. A variable frequency fan 4 is provided at the upper end of the protective cover 3. An air inlet pipe 41 is provided at the outlet end of the variable frequency fan 4. A flexible hose 42 is provided inside the air inlet pipe 41. The air inlet pipe 41 passes through the protective cover 3 and is connected to the flexible hose 42. The end of the flexible hose 42 away from the air inlet pipe 41 is connected to a connecting ring 31, and the connecting ring 31 is rotatably connected to the flexible hose 42.

[0031] Reference Figure 2 and Figure 3 The variable frequency fan 4, as the core power source of the air intake assembly, can continuously and stably draw in outside air and deliver it to the connecting ring 31 through the air intake pipe 41 and the hose 42. The connecting ring 31 is connected to the air outlet 33 on the side near the bearing 2. The air outlet 33 blows air towards the surface of the bearing 2. The gas entering the connecting ring 31 is blown onto the surface of the bearing 2 through the air outlet 33. This continuous airflow can blow away the bearing 2 and form a continuous and uniform airflow coverage layer. It can quickly blow away any trace amounts of ozone and water vapor that may remain on the surface of the bearing 2, reduce the adhesion and accumulation of corrosive media on the contact surface of the bearing 2, keep the surface of the bearing 2 dry and clean, reduce the corrosive activity of ozone in a humid environment, and extend the service life of the bearing 2.

[0032] Reference Figure 2 A humidity sensor 32 is fixed inside the protective cover 3. The humidity sensor 32 is electrically connected to the variable frequency fan 4. The humidity sensor 32 is fixed inside the protective cover 3 and can directly and accurately monitor the humidity changes in the closed chamber. It can also feed the humidity signal back to the variable frequency fan 4 in real time. When the humidity inside the protective cover 3 exceeds the standard, the variable frequency fan 4 automatically increases the speed to increase the gas delivery volume, quickly reduce the humidity inside the protective cover 3 and enhance the airflow cleaning effect. When the humidity drops to a safe range, the variable frequency fan 4 automatically reduces the speed, so that the variable frequency fan 4 can adjust the speed according to the humidity, thereby improving the flexibility of the device.

[0033] Reference Figure 2 and Figure 4A motor 311 is fixedly mounted on the outside of the protective cover 3. A lead screw 312 is provided at the upper end of the bearing 2. The lead screw 312 is rotatably connected to the protective cover 3, and the output shaft of the motor 311 is coaxially fixed with the lead screw 312. When the motor 311 starts, it drives the lead screw 312 to rotate. A drive block 313 is provided at one end of the lead screw 312. The drive block 313 is threadedly connected to the lead screw 312. The protective cover 3 limits the drive block 313. The rotation of the lead screw 312 drives the drive block 313 to move laterally. The connecting ring 31 is located on one side of the drive block 313 and is rotatably connected to the drive block 313. The lateral movement of the drive block 313 drives the connecting ring 31 to move laterally, thereby driving the air outlet 33 to move laterally. This facilitates the adjustment of the distance between the bearing 2 and the air outlet 33, improving the flexibility of the device.

[0034] Reference Figure 2 and Figure 4 A second motor 314 is fixedly mounted on the outside of the protective cover 3, and a disc 315 is installed inside the protective cover 3. The disc 315 is rotatably connected to the protective cover 3, and is coaxially fixed to the output shaft of the second motor 314. When the second motor 314 starts, it drives the disc 315 to rotate. A belt 316 is provided between the disc 315 and the connecting ring 31. The belt 316 is rotatably connected to both the disc 315 and the connecting ring 31. The rotation of the disc 315 drives the connecting ring 31 to rotate through the belt 316, which in turn drives the air outlet 33 to rotate. This allows the airflow generated by the air outlet 33 to fully cover the bearing 2, forming a dynamic airflow barrier and more efficiently blowing away residual ozone and water vapor on the surface of the bearing 2. The lead screw 312, disc 315, etc., are all made of corrosion-resistant materials that do not react with ozone, improving the stability of the device.

[0035] Reference Figure 2 and Figure 3 A sealing element 43 is provided between the air inlet duct 41 and the protective cover 3. The sealing element 43 is made of elastic material 52. The sealing element 43 is made of elastic material and can fit tightly against the connection surface of the air inlet duct 41 and the protective cover 3 to achieve seamless sealing of the gap between the two. The sealing element 43 can effectively reduce the leakage of gas from the gap and ensure that the gas can enter the connecting ring 31 through the hose 42 according to the design path, and then be blown to the surface of the bearing 2 through the air outlet 33, thereby improving the gas utilization efficiency.

[0036] Reference Figure 2 and Figure 3A connecting block 5 is fixedly installed at the upper end of the protective cover 3. Two positioning sleeves 51 are provided inside the connecting block 5. The two positioning sleeves 51 are symmetrically distributed with respect to the air inlet pipe 41. A positioning rod 54 is fixedly installed on the side of the two positioning sleeves 51 that is far away from each other. The positioning rod 54 is slidably connected to the connecting block 5 in the transverse direction. An elastic element 52 is sleeved on the outside of the positioning block. The two positioning sleeves 51 are symmetrically distributed with respect to the air inlet pipe 41. The elastic element 52 provides a continuous clamping force in its natural state, which drives the positioning sleeves 51 to move closer to each other and fit tightly against the outer wall of the air inlet pipe 41. The clamping force is transmitted through the transversely sliding positioning rod 54, so that the two positioning sleeves 51 cooperate to position the air inlet pipe 41, reducing the probability of accidental movement of the air inlet pipe 41 and improving the stability of the device.

[0037] Reference Figure 3 A handle 53 is provided on the side of the positioning rod 54 away from the positioning sleeve 51, and the handle 53 is threadedly connected to the positioning rod 54. Twisting the handle 53 will cause the positioning rod 54 to slide laterally, easily opening or closing the positioning sleeve 51. During installation, simply twist the handles 53 on both sides to separate the positioning sleeve 51, insert the air inlet duct 41, and then release the handles 53. The elastic element 52 will automatically drive the positioning sleeve 51 to clamp the air inlet duct 41, and fixation can be completed without additional tools. During disassembly, twisting the handles 53 in the opposite direction will quickly release the air inlet duct 41. The positioning sleeve 51 has an arc-shaped surface that fits against the air inlet duct 41, which is beneficial for the positioning sleeve 51 to clamp the air inlet duct 41.

[0038] Reference Figure 1 The protective cover 3 has a maintenance observation window 34 on its side wall. The protective cover 3 and the maintenance observation window 34 are rotatably connected. The maintenance observation window 34 is made of transparent and corrosion-resistant material. This allows operators to clearly observe the operating status of the equipment inside the protective cover 3 without opening the protective cover 3. When it is necessary to maintain the equipment inside the protective cover 3, the operator only needs to open the observation window to directly access the relevant parts of the equipment for maintenance, cleaning, replacement of parts, and other operations. The edge of the maintenance observation window 34 is fitted with a sealing ring, which forms a tight seal with the rotatable connection surface of the protective cover 3. This effectively seals the gap between the observation window and the protective cover 3, reducing the infiltration of high concentrations of ozone and moisture into the irradiation chamber through the gap.

[0039] The implementation principle of the POF film roller bearing anti-corrosion device in this application embodiment is as follows: the variable frequency fan 4 continuously and stably draws in outside air and delivers it to the connecting ring 31 through the air inlet pipe 41 and the hose 42. The gas entering the connecting ring 31 is blown onto the surface of the bearing 2 through the air outlet 33. This continuous airflow can blow away the bearing 2 and form a continuous and uniform airflow coverage layer, which can quickly blow away any trace ozone and water vapor that may remain on the surface of the bearing 2, reduce the adhesion and accumulation of corrosive media on the contact surface of the bearing 2, keep the surface of the bearing 2 dry and clean, reduce the corrosive activity of ozone in a humid environment, and extend the service life of the bearing 2.

[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 corrosion protection device for POF film roller bearings, comprising a roller (1), characterized in that: A protective cover (3) is provided on one side of the roller (1). The protective cover (3) is sleeved on the outside of the roller shaft. The protective cover (3) is rotatably connected to the roller (1). A bearing (2) is fixed on one side of the roller (1). The bearing (2) is located inside the protective cover (3). The installation area of ​​the protective cover (3) and the bearing (2) forms a closed chamber. A connecting ring (31) is provided inside the protective cover (3). An air outlet (33) is connected to the side of the connecting ring (31) near the bearing (2). The air outlet (33) blows air in the direction of the bearing (2). An air inlet assembly is provided at the upper end of the protective cover (3). The air inlet assembly is used to deliver gas into the connecting ring (31).

2. The anti-corrosion device for POF film roller bearings according to claim 1, characterized in that: The air intake assembly includes a variable frequency fan (4), an air intake duct (41), and a hose (42). The variable frequency fan (4) is located at the upper end of the protective cover (3). The air outlet of the variable frequency fan (4) is connected to the air intake duct (41). The hose (42) is located at the end of the air intake duct (41) away from the variable frequency fan (4). The air intake duct (41) passes through the protective cover (3) and is connected to the hose (42). The end of the hose (42) away from the air intake duct (41) is connected to the connecting ring (31), and the hose (42) and the connecting ring (31) are rotatably connected.

3. The anti-corrosion device for POF film roller bearings according to claim 2, characterized in that: A sealing element (43) is provided between the air inlet duct (41) and the protective cover (3). The sealing element (43) is made of elastic material (52) and is used to seal the gap between the air inlet duct (41) and the protective cover (3).

4. The anti-corrosion device for POF film roller bearings according to claim 2, characterized in that: A humidity sensor (32) is fixed inside the protective cover (3). The humidity sensor (32) is electrically connected to the variable frequency fan (4). The humidity sensor (32) is used to detect the humidity inside the protective cover (3).

5. The anti-corrosion device for POF film roller bearings according to claim 2, characterized in that: The upper end of the protective cover (3) is fixed with a connecting block (5), and two positioning sleeves (51) are provided inside the connecting block (5). The two positioning sleeves (51) are symmetrically distributed with respect to the air inlet pipe (41). A positioning rod (54) is fixed on the side of the two positioning sleeves (51) that is far away from each other. The positioning rod (54) is slidably connected to the connecting block (5) in the transverse direction. An elastic element (52) is sleeved on the outside of the positioning block. The elastic element (52) drives the two positioning sleeves (51) to move closer to each other in its natural state. A handle (53) is provided on the side of the positioning rod (54) that is far away from the positioning sleeve (51). The handle (53) is threadedly connected to the positioning rod (54).

6. The anti-corrosion device for POF film roller bearings according to claim 1, characterized in that: A motor (311) is fixedly mounted on the outside of the protective cover (3). A lead screw (312) is provided at the upper end of the bearing (2). The lead screw (312) is rotatably connected to the protective cover (3). The output shaft of the motor (311) is coaxially fixed with the lead screw (312). A drive block (313) is provided at one end of the lead screw (312). The drive block (313) is threadedly connected to the lead screw (312). A connecting ring (31) is located on one side of the drive block (313) and is rotatably connected to the drive block (313).

7. The anti-corrosion device for POF film roller bearings according to claim 1, characterized in that: The protective cover (3) is provided with a disc (315) inside, the disc (315) is rotatably connected to the protective cover (3), a belt (316) is provided between the disc (315) and the connecting ring (31), the belt (316) is rotatably connected to the disc (315) and the connecting ring (31) respectively, and a motor (314) for driving the disc (315) to rotate is fixed on the outside of the protective cover (3).

8. The anti-corrosion device for POF film roller bearings according to claim 1, characterized in that: The protective cover (3) has a maintenance observation window (34) on its side wall. The protective cover (3) is rotatably connected to the maintenance observation window (34). The maintenance observation window (34) is made of transparent corrosion-resistant material and has a sealing ring embedded on its edge.

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