A water-lubricated bearing rubber inner ring stripping and recovery device

Abstract

The present invention discloses a device for stripping and recovering the rubber inner ring of a water-lubricated bearing. The device comprises a power system for driving axial movement of a stripping tool, which utilizes a cylindrical cutter and can be inserted between the rubber inner ring and the outer shell of the water-lubricated bearing. The device also includes a clamping mechanism for clamping the water-lubricated bearing, with the clamped bearing and the stripping tool arranged coaxially. The device is particularly suitable for stripping and recovering large water-lubricated bearings, enabling smooth and rapid removal of the rubber inner ring in a near-destructive manner, significantly reducing operational complexity.

Description

Technical Field

[0001] The invention belongs to the technical field of water-lubricated bearing recycling and reuse, and in particular relates to a water-lubricated bearing rubber inner ring stripping and recycling device. Background Art

[0002] Water-lubricated bearings refer to bearings used directly in water. They are mainly divided into phenol bearings, rubber bearings, ceramic bearings, graphite bearings, PTFE and other polymer bearings. They do not require any sealing devices. The bearings are directly lubricated by water, avoiding water pollution caused by lubricating oil or grease, and can effectively control the temperature rise of the bearings. They are safe and reliable.

[0003] Rubber bearings are typical water-lubricated bearings, primarily consisting of a brass outer shell and a rubber inner ring bonded to the inner wall of the brass outer shell with a strong adhesive. When a rubber bearing exceeds its service life (service life) or its inner ring is damaged, it is typically removed and replaced. However, since the brass outer shell rarely breaks, it can be recycled and reused. Currently, there are two main methods for recycling rubber bearings: first, incinerating the bearing in a high-temperature furnace (above the melting point of the rubber but below that of the outer shell) to melt or burn the inner ring. However, this method is highly polluting and can easily leave rubber plaques on the inner wall of the outer shell. It is generally only suitable for rubber bearings less than 500mm in length. Second, using custom-made tools to peel the inner ring piece by piece is time-consuming, labor-intensive, and inefficient, and can easily injure the operator's hands. For example, for a DN150mm*1000mm rubber bearing, completely peeling the inner ring would take approximately two hours.

[0004] Crucially, existing methods for recycling rubber bearings are destructive, meaning they can only recycle the brass outer shell intact, but not the rubber inner ring. Therefore, if the rubber inner ring could be stripped and recycled as a whole, the manufacturing cost of recycled and reusable rubber bearings could be significantly reduced. Summary of the Invention

[0005] At least in order to solve the technical problems mentioned in the background technology, one of the purposes of the present invention is to provide a water-lubricated bearing rubber inner ring stripping and recovery device.

[0006] The present invention adopts the following technical solutions.

[0007] A water-lubricated bearing rubber inner ring stripping and recovery device includes a power system for driving a stripping tool to move axially, and the stripping tool can be inserted between the rubber inner ring and the outer shell of the water-lubricated bearing; it also includes a clamping mechanism for clamping the water-lubricated bearing, and the water-lubricated bearing in the clamped state is coaxially arranged with the stripping tool.

[0008] In order to improve the stability during the stripping and recovery process of the rubber inner ring of the water-lubricated bearing, the power system adopts a worm gear mechanism; the clamping mechanism adopts a clamping clamping assembly, and a stopper is provided on the outside of the clamping clamping assembly for pressing against the end face of the water-lubricated bearing.

[0009] In order to further improve the stability and efficiency of the stripping and recovery process of the rubber inner ring of the water-lubricated bearing, the stripping tool includes a knife seat, the knife seat is fixedly connected to the worm of the worm gear mechanism, the lower edge of the knife seat is abutted against the guide groove, a cylindrical tool is arranged in front of the knife seat, and several cylindrical plugs of the same specifications are arranged between the cylindrical tool and the knife seat. The cylindrical plug is coaxially arranged with the cylindrical tool, and the cylindrical tool and the cylindrical plug can be separated. The outer diameter of the cylindrical tool is equal to the inner diameter of the outer shell.

[0010] In order to improve the stability during the stripping and recovery process of the rubber inner ring of the water-lubricated bearing and reduce the difficulty of operation, the power system adopts a stamping mechanism; the clamping mechanism adopts a clamping clamping assembly, and a block body for pressing against the end face of the water-lubricated bearing is provided on the outside of the clamping clamping assembly; the stripping tool includes a tool holder, the tool holder is fixedly connected to the punch of the stamping mechanism, the tool holder is abutted in the guide groove, a cylindrical tool is provided in front of the tool holder, and several cylindrical plugs of the same specifications are provided between the cylindrical tool and the tool holder, the cylindrical plug and the cylindrical tool are coaxially arranged, and the cylindrical tool and the cylindrical plug can be separated, and the outer diameter of the cylindrical tool is equal to the inner diameter of the outer shell.

[0011] As a preferred solution, the outer diameter corresponding to the cutting edge of the cylindrical cutter is equal to the inner diameter of the housing.

[0012] In order to prevent the cylindrical tool from getting stuck during the stripping process, the blades at different parts of the cylindrical tool have height differences, and the blade has an overall tooth-shaped structure.

[0013] As a preferred solution, a boss is provided on the knife seat, and the outer diameter of the boss is equal to the inner diameter of the cylindrical plug.

[0014] A method for stripping and recovering the rubber inner ring of a water-lubricated bearing using the aforementioned device comprises the following steps:

[0015] Step 1: Place the water-lubricated bearing on the clamping mechanism and clamp it, so that the distal end of the water-lubricated bearing rests against the block body; in the present invention, the distal end of the water-lubricated bearing refers to the end of the water-lubricated bearing away from the power system, and the proximal end of the water-lubricated bearing refers to the end of the water-lubricated bearing close to the power system;

[0016] Step 2: Place the cylindrical cutter in the guide groove in front of the cutter holder. At this point, the cutting edge of the cylindrical cutter is aligned with the interface between the rubber inner ring and the outer shell.

[0017] Step 3: Control the power system to run forward to move the drive tool holder forward, thereby driving the cylindrical tool to move forward and insert into the interface between the rubber inner ring and the outer shell. During the forward movement of the cylindrical tool, the rubber inner ring is gradually peeled off;

[0018] Step 4: After the cylindrical tool moves to the target position, the power system is controlled to run in reverse to move the driven tool holder back a standard length, and then the cylindrical plug is placed in the guide groove;

[0019] Step 5: Control the power system to run forward again to move the driven tool holder forward. After the tool holder moves forward a standard length, control the power system to run reversely again to move the driven tool holder back a standard length, and then continue to place a new cylindrical plug in the guide groove.

[0020] Step 6: Repeat step 5 several times until the blade of the cylindrical tool is pressed against the block and stops, then control the tool holder to reset and pull out the rubber inner ring.

[0021] As a preferred solution, the standard length distance is 10 to 20 mm greater than the length of the cylindrical plug body.

[0022] Beneficial effects: The scheme of the present invention is particularly suitable for stripping and recycling large-sized (length not less than one meter, inner diameter not less than DN100mm) water-lubricated bearings. The rubber inner ring can be stripped out smoothly and quickly in a nearly non-destructive manner. Taking a rubber bearing of DN150~200mm*1000~1200mm as an example, it only takes about five minutes to completely strip the rubber inner ring. The peeled rubber inner ring is cylindrical and can be reused after only surface treatment. The peeled outer shell only needs to be processed to remove the adhesive material on the inner wall before it can be reused. When the scheme of the present invention is used to strip and recycle water-lubricated bearings, there are only individual rubber patches on the inner wall of the outer shell, there is no air pollution caused by incineration, and it will not damage the operator's hands, which significantly reduces the difficulty of operation. The water-lubricated bearing rubber inner ring stripping and recovery device of the present invention also has the advantages of good stability and simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional schematic diagram of the water-lubricated bearing rubber inner ring stripping and recovery device in Example 1;

[0024] Figure 2 This is a schematic cross-sectional view of the device for stripping and recovering the rubber inner ring of a water-lubricated bearing in Example 1;

[0025] Figure 3 Schematic diagram of the cylindrical tool in Example 1;

[0026] Figure 4 Schematic diagram of the cross section of the cylindrical tool in Example 1;

[0027] Figure 5 This is a schematic diagram of the cylindrical plug body in Example 1;

[0028] Figure 6 This is a cross-sectional schematic diagram of the water-lubricated bearing rubber inner ring stripping and recovery device in Example 2. DETAILED DESCRIPTION

[0029] The following is a clear and complete description of the technical solutions of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0030] Combine Figures 1 to 5 As shown, a water-lubricated bearing rubber inner ring stripping and recovery device includes a power system, which is used to drive the stripping tool 1 to move axially. The stripping tool 1 can be inserted between the rubber inner ring 12 and the outer shell 11 of the water-lubricated bearing 10; it also includes a clamping mechanism, which is used to clamp the water-lubricated bearing 10, and the water-lubricated bearing 10 in the clamped state is coaxially arranged with the stripping tool 1.

[0031] In this embodiment, the power system adopts a horizontally arranged worm gear mechanism 9; the clamping mechanism adopts a plurality of spaced-apart clamping assemblies 3, and a stopper 2 for pressing against the end face of the water-lubricated bearing 10 is provided on the outside of the clamping assemblies 3 (to the side of the clamping assemblies 3 away from the power system).

[0032] In this embodiment, the stripping tool 1 includes a tool holder 4, which is fixedly connected to the worm of the worm gear mechanism 9. The lower edge of the tool holder 4 is abutted against the guide groove 8. A cylindrical tool 5 that can be flexibly placed and removed is provided in front of the tool holder 4. A plurality of cylindrical plugs 6 of the same specifications are provided between the cylindrical tool 5 and the tool holder 4. The cylindrical plugs 6 are coaxially arranged with the cylindrical tool 5, and the cylindrical tool 5 and the cylindrical plugs 6 can be separated. The outer diameter of the cylindrical tool 5 is equal to the inner diameter of the shell 11. Among them, the outer diameter corresponding to the blade 14 of the cylindrical tool 5 is equal to the inner diameter of the shell 11; the blades 14 at different parts of the cylindrical tool 5 have a height difference, and the blade 14 as a whole has a tooth-shaped structure (such as Figure 3 and Figure 4 ). A boss 7 is provided on the tool holder 4, and the outer diameter of the boss 7 is equal to the inner diameter of the cylindrical plug body 6. The stripping tool 1, the power system and the block body 2 are all mounted on the base 13.

[0033] A method for stripping and recovering the rubber inner ring of a water-lubricated bearing according to this embodiment comprises the following steps:

[0034] Pretreatment: First, use a knife or a sharp tool to peel or pry open the bonding area between the end of the rubber inner ring 12 and the outer shell 11. The axial depth of peeling or prying is controlled to 5-10mm, so that the blade 14 of the cylindrical tool 5 in step 3 can be smoothly inserted at the beginning of the peeling stage;

[0035] Step 1: Place the water-lubricated bearing 10 on the clamping mechanism and clamp it after adjusting the position of the water-lubricated bearing 10. At this time, the distal end of the water-lubricated bearing 10 abuts against the block body 2.

[0036] Step 2: Place the cylindrical cutter 5 in the guide groove 8 in front of the cutter holder 4. At this time, the cutting edge 14 of the cylindrical cutter 5 is aligned with the interface between the rubber inner ring 12 and the outer shell 11.

[0037] Step 3: Control the power system to run forward (essentially, control the motor shaft of the worm gear mechanism 9 to rotate clockwise, the same below) to move the drive tool holder 4 forward, thereby driving the cylindrical tool 5 to move forward and insert into the interface between the rubber inner ring 12 and the outer shell 11. During the forward movement of the cylindrical tool 5, the rubber inner ring 12 is gradually peeled off;

[0038] Step 4: After the cylindrical cutter 5 moves to the target position, the power system is controlled to run in the reverse direction (essentially, the motor shaft of the worm gear mechanism 9 is controlled to rotate counterclockwise) to drive the cutter holder 4 back a standard length. At this time, there is no space between the cylindrical cutter 5 and the cutter holder 4. The cylindrical cutter 5 is embedded between the rubber inner ring 12 and the outer shell 11. Then, the cylindrical plug 6 is placed in the guide groove 8. The standard length is 10 mm longer than the length of the cylindrical plug 6.

[0039] Step 5: Control the power system to run forward again to move the drive tool holder 4 forward. After the tool holder 4 moves forward a standard length, control the power system to run reverse again to move the drive tool holder 4 back a standard length, and then continue to place a new cylindrical plug 6 into the guide groove 8.

[0040] Step 6: Repeat step 5 several times until the blade 14 of the cylindrical cutter 5 is brought into contact with the block 2 and stops. Then, the cutter holder 4 is controlled to reset and the rubber inner ring 12 is withdrawn. This completes the cylindrical rubber inner ring 12. The adhesive material on the inner wall of the outer shell 11 is subsequently cleaned and the outer and inner walls of the rubber inner ring 12 are re-polished or repaired. The rubber inner ring 12 and the outer shell 11 can then be reused. Example 2

[0041] Combine Figure 6As shown, a water-lubricated bearing rubber inner ring stripping and recovery device includes a power system, which is used to drive the stripping tool 1 to move axially. The stripping tool 1 can be inserted between the rubber inner ring 12 and the outer shell 11 of the water-lubricated bearing 10; it also includes a clamping mechanism, which is used to clamp the water-lubricated bearing 10, and the water-lubricated bearing 10 in the clamped state is coaxially arranged with the stripping tool 1.

[0042] In this embodiment, the power system adopts a vertically arranged stamping mechanism; the clamping mechanism adopts a clamping clamping assembly 3, and a block body 2 for pressing the end face of the water-lubricated bearing 10 is provided on the outside of the clamping clamping assembly 3 (away from the bottom of the clamping clamping assembly 3 of the power system); the stripping tool 1 includes a tool holder 4, the tool holder 4 is fixedly connected to the punch 15 of the stamping mechanism, the tool holder 4 is abutted in the guide groove 8, and a cylindrical tool 5 is provided in front of the tool holder 4, and several cylindrical plugs 6 of the same specifications are provided between the cylindrical tool 5 and the tool holder 4, the cylindrical plug 6 is coaxially arranged with the cylindrical tool 5, and the cylindrical tool 5 and the cylindrical plug 6 can be separated, and the outer diameter of the cylindrical tool 5 is equal to the inner diameter of the outer shell 11.

[0043] In this embodiment, the stripping tool 1 includes a tool holder 4, which is fixedly connected to the punch of the stamping mechanism. The lower edge of the tool holder 4 rests on the guide groove 8. A cylindrical tool 5 that can be flexibly placed and removed is provided in front of the tool holder 4. A plurality of cylindrical plugs 6 of the same specifications are provided between the cylindrical tool 5 and the tool holder 4. The cylindrical plugs 6 are coaxially arranged with the cylindrical tool 5, and the cylindrical tool 5 and the cylindrical plugs 6 can be separated. The outer diameter of the cylindrical tool 5 is equal to the inner diameter of the outer shell 11. Among them, the outer diameter corresponding to the blade 14 of the cylindrical tool 5 is equal to the inner diameter of the outer shell 11; the blades 14 at different parts of the cylindrical tool 5 have a height difference, and the blades 14 have a tooth-shaped structure as a whole. A boss 7 is provided on the tool holder 4, and the outer diameter of the boss 7 is equal to the inner diameter of the cylindrical plug 6.

[0044] A method for stripping and recovering the rubber inner ring of a water-lubricated bearing according to this embodiment comprises the following steps:

[0045] Pretreatment: First, use a knife or a sharp tool to peel or pry open the bonding area between the end of the rubber inner ring 12 and the outer shell 11. The axial depth of peeling or prying is controlled to 5-10mm, so that the blade 14 of the cylindrical tool 5 in step 3 can be smoothly inserted at the beginning of the peeling stage;

[0046] Step 1: Place the water-lubricated bearing 10 on the clamping mechanism and clamp it after adjusting the position of the water-lubricated bearing 10. At this time, the distal end of the water-lubricated bearing 10 abuts against the block body 2.

[0047] Step 2: Place the cylindrical cutter 5 in the guide groove 8 in front of the cutter holder 4. At this time, the cutting edge 14 of the cylindrical cutter 5 is aligned with the interface between the rubber inner ring 12 and the outer shell 11.

[0048] Step 3: Control the power system to run forward (essentially, control the punch of the punching mechanism to move downward) to move the drive tool holder 4 forward, thereby driving the cylindrical tool 5 to move forward and insert into the interface between the rubber inner ring 12 and the outer shell 11. During the forward movement of the cylindrical tool 5, the rubber inner ring 12 is gradually peeled off;

[0049] Step 4: After the cylindrical cutter 5 moves to the target position, the power system is controlled to operate in reverse (essentially, the punch of the punching mechanism is controlled to move upward) to cause the driven cutter holder 4 to retreat a standard length. At this time, there is no space between the cylindrical cutter 5 and the cutter holder 4. The cylindrical cutter 5 is inserted between the rubber inner ring 12 and the outer shell 11. Then, the cylindrical plug 6 is placed in the guide groove 8. The standard length is 20 mm longer than the length of the cylindrical plug 6.

[0050] Step 5: Control the power system to run forward again to move the drive tool holder 4 forward. After the tool holder 4 moves forward a standard length, control the power system to run reverse again to move the drive tool holder 4 back a standard length, and then continue to place a new cylindrical plug 6 into the guide groove 8.

[0051] Step 6: Repeat step 5 several times until the blade 14 of the cylindrical cutter 5 is brought into contact with the block 2 and stops. Then, the cutter holder 4 is controlled to reset and the rubber inner ring 12 is withdrawn. This completes the cylindrical rubber inner ring 12. The adhesive material on the inner wall of the outer shell 11 is subsequently cleaned and the outer and inner walls of the rubber inner ring 12 are re-polished or repaired. The rubber inner ring 12 and the outer shell 11 can then be reused.

[0052] For a DN200mm*1200mm rubber bearing with a 15mm thick inner rubber ring and a 12mm thick outer shell, a 200mm long, 10mm thick cylindrical plug 6 and a 150mm long, 10mm thick cylindrical cutter 5 were used. Using the method in Example 1, complete peeling of the rubber inner ring took approximately six minutes and fifteen seconds (including the approximately one minute required to place the rubber bearing). After peeling, the rubber inner ring was cylindrical, and only seven individual rubber patches remained on the inner shell wall (rubber patches refer to rubber blocks with a diameter of no more than 2mm remaining on the inner shell wall). Using the method in Example 2, complete peeling of the rubber inner ring took five minutes and three seconds (including the one minute required to place the rubber bearing). After peeling, the rubber inner ring was cylindrical, and only five individual rubber patches remained on the inner shell wall. However, using traditional incineration to recycle the outer shell also burns away the adhesive, leaving at least hundreds of rubber patches remaining in the roughened spots (small pits) on the inner shell wall.

[0053] In the implementation scheme, it is very critical to use a power system in conjunction with a specific stripping tool, which can strip the rubber inner ring in a nearly non-destructive manner. During the stripping process, the axial force provided by the power system is cleverly converted into a radial force to tear off the rubber inner ring, and the peeled portion of the rubber inner ring is guided by the cylindrical tool and the inner cavity of the cylindrical plug.

[0054] The solution of the embodiment is particularly suitable for stripping and recycling large-sized (length not less than one meter, inner diameter not less than DN100mm) water-lubricated bearings. The rubber inner ring can be stripped out smoothly and quickly in a nearly non-destructive manner. Taking a rubber bearing of DN150~200mm*1000~1200mm as an example, it only takes about five minutes to completely strip the rubber inner ring. The peeled rubber inner ring is cylindrical and can be reused after only surface treatment. The peeled outer shell only needs to remove the adhesive material on the inner wall before it can be reused, truly realizing the recycling of the rubber inner ring and outer shell. When the embodiment solution is used to strip and recycle water-lubricated bearings, only individual rubber patches are left on the inner wall of the outer shell. There is no air pollution caused by incineration, and the operator's hands will not be injured, which significantly reduces the difficulty of operation. It also has the advantages of good stability and simple structure.

Claims

1. A method for stripping and recycling the rubber inner ring of a water-lubricated bearing, characterized in that: A water-lubricated bearing rubber inner ring stripping and recovery device is used. The device includes a power system for driving a stripping tool (1) to move axially. The stripping tool (1) can be inserted between the rubber inner ring (12) and the outer shell (11) of the water-lubricated bearing (10). The device also includes a clamping mechanism for clamping the water-lubricated bearing (10). The water-lubricated bearing (10) in the clamped state is coaxially arranged with the stripping tool (1). The method for stripping and recovering the rubber inner ring of a water-lubricated bearing comprises the following steps: Step 1: Place the water-lubricated bearing (10) on the clamping mechanism and clamp it, so that the distal end of the water-lubricated bearing (10) abuts against the block body (2); Step 2: Place the cylindrical cutter (5) in the guide groove (8) in front of the cutter holder (4). At this time, the blade (14) of the cylindrical cutter (5) is aligned with the interface between the rubber inner ring (12) and the outer shell (11); Step 3, controlling the power system to run forward to move the drive tool holder (4) forward, thereby driving the cylindrical tool (5) to move forward and insert into the interface between the rubber inner ring (12) and the outer shell (11), and during the forward movement of the cylindrical tool (5), the rubber inner ring (12) is gradually peeled off; Step 4, after the cylindrical tool (5) moves to the target position, the power system is controlled to run in reverse to move the driving tool holder (4) back a standard length, and then the cylindrical plug (6) is placed in the guide groove (8); Step 5, controlling the power system to run forward again to move the driven knife seat (4) forward, and after the knife seat (4) moves forward a standard length, controlling the power system to run reverse again to move the driven knife seat (4) back a standard length, and then continuing to place a new cylindrical plug body (6) in the guide groove (8); Step 6, repeat step 5 several times until the blade (14) of the cylindrical tool (5) is brought into contact with the block (2) and stops, then control the tool holder (4) to reset and extract the rubber inner ring (12).

2. The method for stripping and recycling the rubber inner ring of a water-lubricated bearing according to claim 1, characterized in that: The standard length is 10-20 mm greater than the length of the cylindrical plug body (6).

3. The method for stripping and recycling the rubber inner ring of a water-lubricated bearing according to claim 2, characterized in that: The power system adopts a worm gear mechanism (9); the clamping mechanism adopts a clamping hoop type clamping assembly (3), and a stopper (2) for pressing against the end face of the water-lubricated bearing (10) is provided on the outside of the clamping hoop type clamping assembly (3).

4. The method for stripping and recycling the rubber inner ring of a water-lubricated bearing according to claim 3, characterized in that: The stripping tool (1) includes a tool holder (4), the tool holder (4) is fixedly connected to the worm of the worm gear mechanism (9), the lower edge of the tool holder (4) is abutted against the guide groove (8), a cylindrical tool (5) is arranged in front of the tool holder (4), and a plurality of cylindrical plugs (6) of the same specifications are arranged between the cylindrical tool (5) and the tool holder (4), the cylindrical plugs (6) and the cylindrical tool (5) are coaxially arranged, and the cylindrical tool (5) and the cylindrical plugs (6) can be separated, and the outer diameter of the cylindrical tool (5) is equal to the inner diameter of the housing (11).

5. The method for stripping and recycling the rubber inner ring of a water-lubricated bearing according to claim 4, characterized in that: The power system adopts a stamping mechanism; the clamping mechanism adopts a clamping hoop type clamping assembly (3), and a stopper (2) for pressing against the end face of a water-lubricated bearing (10) is provided on the outside of the clamping hoop type clamping assembly (3); the stripping tool (1) includes a tool holder (4), the tool holder (4) is fixedly connected to a punch (15) of the stamping mechanism, the tool holder (4) is abutted in a guide groove (8), a cylindrical tool (5) is provided in front of the tool holder (4), a plurality of cylindrical plugs (6) of the same specification are provided between the cylindrical tool (5) and the tool holder (4), the cylindrical plugs (6) and the cylindrical tool (5) are coaxially arranged, and the cylindrical tool (5) and the cylindrical plugs (6) can be separated, and the outer diameter of the cylindrical tool (5) is equal to the inner diameter of the housing (11).

6. The method for stripping and recycling the rubber inner ring of a water-lubricated bearing according to claim 5, characterized in that: The outer diameter corresponding to the blade (14) of the cylindrical tool (5) is equal to the inner diameter of the housing (11).

7. The method for stripping and recycling the rubber inner ring of a water-lubricated bearing according to claim 6, characterized in that: The blades (14) at different positions of the cylindrical tool (5) have height differences, and the blades (14) are in a tooth-shaped structure as a whole.

8. The method for stripping and recycling the rubber inner ring of a water-lubricated bearing according to claim 7, characterized in that: A boss (7) is provided on the knife seat (4), and the outer diameter of the boss (7) is equal to the inner diameter of the cylindrical plug body (6).

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