Mechanical seal dismounting tool

Abstract

The utility model relates to the technical field of water pump maintenance, in particular to a mechanical seal disassembling tool which comprises a shaft sleeve, a shaft sleeve, a rotating shaft and a rotating shaft. The extension barrel is connected to the tail part of the shaft sleeve, and the extension barrel is used for transmitting thrust or / and tensile force to the shaft sleeve; and the driving mechanism is in transmission connection with the extension barrel, and the driving mechanism is used for applying axial driving force to the extension barrel, so that when the shaft sleeve is connected to the transmission shaft in a clearance fit manner, the driving mechanism drives the extension barrel to perform axial displacement movement. After the shaft sleeve is pushed between the mechanical seal and the transmission shaft, the mechanical seal is connected with the outer wall of the shaft sleeve, and axial driving force is applied to the extension barrel, so that the shaft sleeve drives the mechanical seal to be detached from the pump body, and the mechanical seal can be effectively detached when a gap between the mechanical seal and the pump body is small.

Description

Technical Field

[0001] The utility model relates to the technical field of water pump maintenance, in particular to a mechanical seal disassembly tool. Background Art

[0002] When inspecting the mechanical seal of a water pump, the mechanical seal needs to be removed from the pump body. However, the existing mechanical seal disassembly device is installed outside the mechanical seal and then connected to the mechanical seal. When the gap between the mechanical seal and the pump body is small, the existing mechanical seal disassembly device cannot enter between the mechanical seal and the pump body, resulting in the inability to effectively disassemble the mechanical seal when the gap between the mechanical seal and the pump body is small.

[0003] In the prior art, for example, the invention patent CN117620961A discloses a tool for disassembling a mechanical seal. In this patent, a positioning sleeve is sleeved on the outside of the mechanical seal, and then engaged with the blind hole circumferentially of the mechanical seal through a fixing member, and then the connecting member is rotated so that the positioning sleeve drives the mechanical seal to move along the extension direction of the connecting member, thereby removing the mechanical seal. However, when the gap between the mechanical seal and the pump body is small, the positioning sleeve in this patent cannot enter between the mechanical seal and the pump body, nor can it be engaged with the blind hole circumferentially of the mechanical seal through the fixing member, so that this patent cannot effectively disassemble the mechanical seal when the gap between the mechanical seal and the pump body is small.

[0004] Therefore, how to effectively disassemble the mechanical seal when the gap between the mechanical seal and the pump body is small is a problem that needs to be solved urgently in the technical field. Utility Model Content

[0005] In view of the problem that when the gap between the mechanical seal and the pump body is small, the existing mechanical seal disassembly device cannot enter between the mechanical seal and the pump body, resulting in the inability to effectively disassemble the mechanical seal when the gap between the mechanical seal and the pump body is small, a mechanical seal disassembly tool is provided, which can effectively disassemble the mechanical seal when the gap between the mechanical seal and the pump body is small.

[0006] In order to achieve the above-mentioned utility model purpose, the utility model provides the following technical solutions:

[0007] A mechanical seal disassembly tool, comprising:

[0008] A shaft sleeve, the shaft sleeve is used to be pushed into between the mechanical seal and the transmission shaft, so that after the shaft sleeve is pushed into between the mechanical seal and the transmission shaft, the inner wall of the shaft sleeve and the transmission shaft are gap-matched, and the outer wall of the shaft sleeve is engaged with the sealing ring in the mechanical seal;

[0009] An extension barrel, the extension barrel is connected to the tail of the shaft sleeve, and the extension barrel is used to transmit thrust and / or pulling force to the shaft sleeve, so that when the extension barrel transmits thrust and / or pulling force, the shaft sleeve moves along the transmission shaft;

[0010] A driving mechanism is transmission-connected to the extension barrel, and is used to apply an axial driving force to the extension barrel, so that when the sleeve is loosely connected to the transmission shaft, the driving mechanism drives the extension barrel to perform axial displacement.

[0011] As a preferred embodiment, the driving mechanism comprises:

[0012] A screw rod is threadedly connected to the extension barrel, and a torsion bar is integrally provided at the head of the screw rod, and the torsion bar is used to drive the screw rod to rotate.

[0013] As a preferred embodiment, the driving mechanism further comprises:

[0014] A limiting cylinder, wherein the limiting cylinder is slidably connected to the outer wall of the extension barrel;

[0015] A limit assembly, wherein the limit assembly is connected to the limit cylinder, the limit assembly is rotationally connected to the screw rod, and the limit assembly is used to limit the movable position of the screw rod, so that when the screw rod is turned clockwise, the extension barrel slides toward the tail end of the limit cylinder, and when the screw rod is turned counterclockwise, the extension barrel slides toward the head end of the limit cylinder.

[0016] As a preferred embodiment, the limiting assembly includes:

[0017] A limiting plate, the limiting plate being mounted on the rear end of the limiting cylinder through a plurality of supporting rods;

[0018] A bearing is connected through the middle position of the limit plate, and an inner ring of the bearing is fixedly connected to the screw.

[0019] As a preferred embodiment, the screw rod is threadedly connected to the extension barrel in the following manner:

[0020] A connecting tube is also integrally provided in the extension barrel, and the connecting tube is connected through the middle position of the bottom end of the extension barrel, and the screw is threadedly connected in the connecting tube.

[0021] As a preferred embodiment, the limiting cylinder is slidably connected to the extension barrel in the following manner:

[0022] A plurality of limiting sliding grooves are symmetrically provided on the outer wall of the extension barrel, and a plurality of limiting sliding blocks are symmetrically and integrally provided on the inner wall of the limiting cylinder. The limiting sliding blocks are slidably connected in the limiting sliding grooves.

[0023] As a preferred embodiment, the extension barrel is connected to the rear of the sleeve in the following manner:

[0024] An external thread is arranged on the tail of the outer wall of the sleeve, and an internal thread is arranged on the top of the inner wall of the extension barrel. The external thread is threadably connected with the internal thread. After the external thread is connected with the internal thread, the tail of the sleeve is located in the extension barrel.

[0025] As a preferred embodiment, the screw is configured as an M16 screw.

[0026] As a preferred embodiment, a limiting slip ring is also passed through the limiting cylinder, and the inner wall of the limiting slip ring is gap-matched with the outer wall of the extension barrel, and a plurality of clamping blocks are symmetrically and integrally arranged on the outer wall of the limiting slip ring, and a plurality of L-shaped slide grooves are symmetrically opened on the inner wall of the limiting cylinder, and the clamping blocks are slidably connected in the L-shaped slide grooves, and the transverse groove sections of the L-shaped slide grooves are used to limit the movable position of the limiting slip ring, and the limiting slip ring is also connected to one end of the supporting cylinder, and the other end of the supporting cylinder is connected to abutting ring, and one end of the abutting ring abuts against the head end of the limiting cylinder after sliding, and the other end of the abutting ring is used to abut against the end face of the mechanical seal.

[0027] As a preferred embodiment, a rubber ring sheet is also bonded to the abutting ring, and the rubber ring sheet is used to separate the abutting ring from the end face of the mechanical seal.

[0028] By adopting the above technology, compared with the prior art, the beneficial effects of the utility model are:

[0029] The utility model discloses that after the shaft sleeve is pushed into between the mechanical seal and the transmission shaft, the mechanical seal is connected to the outer wall of the shaft sleeve, and then an axial driving force is applied to the extension barrel, so that the shaft sleeve drives the mechanical seal to be removed from the pump body, thereby realizing effective disassembly of the mechanical seal when the gap between the mechanical seal and the pump body is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application;

[0032] Figure 2This is a schematic diagram of a connection tube connection in one embodiment of the present application;

[0033] Figure 3 This is a structural schematic diagram of another embodiment of the present application;

[0034] Figure 4 This is a schematic diagram of the structure of a limit assembly in another embodiment of the present application;

[0035] Figure 5 This is a schematic diagram of the internal structure of a limiting cylinder according to another embodiment of the present application;

[0036] Figure 6 This is a schematic diagram of the connection of a limiting cylinder in another embodiment of the present application;

[0037] Figure 7 This is a schematic diagram of the structure of a limit slip ring in another embodiment of the present application; DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments.

[0039] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0040] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0041] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Embodiment 1, as Figure 1-Figure 2 As shown,

[0043] A mechanical seal disassembly tool, comprising:

[0044] A shaft sleeve 1, wherein the shaft sleeve 1 is used to be pushed into between the mechanical seal and the transmission shaft, so that after the shaft sleeve 1 is pushed into between the mechanical seal and the transmission shaft, the inner wall of the shaft sleeve 1 is gap-matched with the transmission shaft, and the outer wall of the shaft sleeve 1 is engaged with the sealing ring in the mechanical seal;

[0045] An extension barrel 2, the extension barrel 2 is connected to the tail of the shaft sleeve 1, and the extension barrel 2 is used to transmit thrust and / or pulling force to the shaft sleeve 1, so that when the extension barrel 2 transmits thrust and / or pulling force, the shaft sleeve 1 moves along the transmission shaft;

[0046] The driving mechanism 3 is transmission-connected to the extension barrel 2, and is used to apply an axial driving force to the extension barrel 2, so that when the sleeve 1 is loosely connected to the transmission shaft, the driving mechanism 3 drives the extension barrel 2 to perform axial displacement activities.

[0047] When disassembling the mechanical seal of the water pump, the sleeve 1 is inserted into the drive shaft of the water pump, and then the extension barrel 2 is connected to the tail of the sleeve 1. The staff pushes the sleeve 1 through the extension barrel 2, so that the sleeve 1 slides along the drive shaft and enters between the mechanical seal and the drive shaft. The outer wall of the sleeve 1 is engaged with the sealing ring in the mechanical seal, and the mechanical seal is connected to the outer wall of the sleeve 1. Then, an axial driving force is applied to the extension barrel 2 through the driving mechanism 3, and the extension barrel 2 drives the sleeve 1 to slide toward the end of the drive shaft. The mechanical seal is displaced along with the sleeve 1, so that the mechanical seal is removed from the pump body of the water pump, and the outer wall of the sleeve 1 is engaged with the inner sealing ring of the mechanical seal to protect the inner sealing ring of the mechanical seal, thereby effectively avoiding damage to the sealing ring during the disassembly of the mechanical seal. In this technical solution, after the sleeve 1 is pushed into between the mechanical seal and the transmission shaft, the mechanical seal establishes a connection with the outer wall of the sleeve 1, and then an axial driving force is applied to the extension barrel 2, so that the sleeve 1 drives the mechanical seal to be removed from the pump body, thereby achieving effective disassembly of the mechanical seal when the gap between the mechanical seal and the pump body is small.

[0048] As a preferred embodiment, the driving mechanism 3 comprises:

[0049] The screw rod 31 is threadedly connected to the extension barrel 2 . A torsion bar 32 is integrally provided at the head of the screw rod 31 . The torsion bar 32 is used to drive the screw rod 31 to rotate.

[0050] After the mechanical seal is connected to the outer wall of the sleeve 1, the screw 31 is threadedly connected to the extension barrel 2, and then the screw 31 is turned clockwise through the torsion bar 32 so that the end of the screw 31 abuts against the end face of the transmission shaft; after the end of the screw 31 abuts against the end face of the transmission shaft, the screw 31 is continued to be turned clockwise through the torsion bar 32. During the clockwise rotation of the screw 31, the extension barrel 2 is driven to axially displace outside the pump body, so that the sleeve 1 drives the mechanical seal to axially displace outside the pump body, until the mechanical seal moves outside the pump body driven by the sleeve 1, thereby completing the disassembly of the mechanical seal.

[0051] Furthermore, the screw rod 31 is threadedly connected to the extension barrel 2 in the following manner:

[0052] A connecting tube 21 is also integrally provided in the extension barrel 2 . The connecting tube 21 is connected to the middle position of the bottom end of the extension barrel 2 . The screw rod 31 is threadedly connected in the connecting tube 21 .

[0053] When the threaded connection area between the screw 31 and the extension barrel 2 is small, the thread may get stuck or the extension barrel 2 may deflect during the transmission of the screw 31; therefore, a connecting tube 21 is integrally provided in the extension barrel 2, and a threaded connection is made between the connecting tube 21 and the screw 31, thereby increasing the threaded connection area between the screw 31 and the extension barrel 2, avoiding the thread getting stuck or the extension barrel 2 deflecting during the transmission of the screw 31, thereby ensuring the connection strength and the transmission effect.

[0054] Furthermore, the extension barrel 2 is connected to the rear of the sleeve 1 in the following manner:

[0055] An external thread is provided on the tail of the outer wall of the sleeve 1, and an internal thread is provided on the top of the inner wall of the extension barrel 2. The external thread is threadedly connected to the internal thread. After the external thread is connected to the internal thread, the tail of the sleeve 1 is located in the extension barrel 2.

[0056] Since the sleeve 1 needs to be pushed into between the mechanical seal and the transmission shaft, the sleeve 1 is relatively thin and is a wearing part. After repeated use, the surface of the sleeve 1 will be deformed and cannot be used. When the sleeve 1 is damaged and cannot be used, the sleeve 1 needs to be replaced; therefore, an external thread is provided on the tail of the outer wall of the sleeve 1, and an internal thread is provided on the top of the inner wall of the extension barrel 2. The sleeve 1 and the extension barrel 2 are threadedly connected so that they can be quickly installed or disassembled. After the sleeve 1 and the extension barrel 2 are threadedly connected, the outer wall of the extension barrel 2 protrudes from the outer wall of the sleeve 1, which can limit the pushing depth of the sleeve 1 and prevent the sleeve 1 from being pushed in too much.

[0057] Furthermore, the screw rod 31 is configured as an M16 screw rod. By configuring the screw rod 31 as an M16 screw rod, the structural strength of the screw rod 31 is ensured, and the transmission effect of the screw rod 31 is also ensured.

[0058] Embodiment 2, as Figure 3-Figure 7 As shown,

[0059] A mechanical seal disassembly tool, based on the above embodiment, the driving mechanism 3 further includes:

[0060] A limiting cylinder 33, wherein the limiting cylinder 33 is slidably connected to the outer wall of the extension barrel 2;

[0061] A limit assembly 34 is connected to the limit cylinder 33. The limit assembly 34 is rotatably connected to the screw rod 31. The limit assembly 34 is used to limit the movable position of the screw rod 31, so that when the screw rod 31 is turned clockwise, the extension barrel 2 slides toward the tail end of the limit cylinder 33, and when the screw rod 31 is turned counterclockwise, the extension barrel 2 slides toward the head end of the limit cylinder 33.

[0062] When the sleeve 1 enters between the mechanical seal and the transmission shaft, an axial thrust needs to be applied to the extension barrel 2. When the sleeve 1 drives the mechanical seal to be removed from the pump body, an axial pulling force needs to be applied to the extension barrel 2. The end of the screw 31 abuts against the end face of the transmission shaft to apply axial pulling force, and the screw 31 will cause wear to the end face of the transmission shaft. Therefore, a limit cylinder 33 is slidably connected to the outer wall of the extension barrel 2, and a limit assembly 34 is provided on the limit cylinder 33. The movable position of the screw 31 is restricted by the limit assembly 34, so that the position of the screw 31 will not be movable during the rotation of the screw 31, and the sliding connection between the limit cylinder 33 and the extension barrel 2 is cooperated to hold the screw The rotational motion of the rod 31 is converted into the linear motion of the extension barrel 2; when pushing the sleeve 1 into between the mechanical seal and the transmission shaft, the staff limits the movable position of the limit barrel 33 by holding the limit barrel 33, and then turns the screw 31 counterclockwise, and the extension barrel 2 slides toward the head end of the limit barrel 33, so that the extension barrel 2 pushes the sleeve 1 into between the mechanical seal and the transmission shaft; after the mechanical seal establishes a connection with the outer wall of the sleeve 1, the screw 31 is turned clockwise, and the extension barrel 2 slides toward the tail end of the limit barrel 33, so that the extension barrel 2 drives the sleeve 1 to axially displace outside the pump body, and the mechanical seal moves outside the pump body driven by the sleeve 1, thereby completing the disassembly of the mechanical seal.

[0063] As a preferred embodiment, the limiting assembly 34 includes:

[0064] A limiting plate 341, wherein the limiting plate 341 is mounted on the rear end of the limiting cylinder 33 through a plurality of supporting rods 342;

[0065] The bearing 343 is connected through the middle position of the limiting plate 341 , and the inner ring of the bearing 343 is fixedly connected to the screw rod 31 .

[0066] When the screw 31 is turned clockwise or counterclockwise, the screw 31 drives the inner ring of the bearing 343 to rotate. The rotation performance of the screw 31 is guaranteed by the connection of the bearing 343, and the limit plate 341 cooperates with multiple support rods 342 to fix the bearing 343 at the tail end of the limit cylinder 33, limiting the movable position of the bearing 343, so that the screw 31 can only rotate but not axially displace, thereby ensuring the transmission effect of the screw 31 applying thrust or pulling force to the extension barrel 2.

[0067] Furthermore, the limiting cylinder 33 is slidably connected to the extension barrel 2 in the following manner:

[0068] A plurality of limiting slide grooves 22 are symmetrically provided on the outer wall of the extension barrel 2 , and a plurality of limiting slide blocks 331 are symmetrically and integrally provided on the inner wall of the limiting cylinder 33 . The limiting slide blocks 331 are slidably connected in the limiting slide grooves 22 .

[0069] When the screw 31 is turned clockwise or counterclockwise, the limit slide groove 22 cooperates with the limit slider 331 to prevent the extension barrel 2 from rotating along with the screw 31, so that when the screw 31 is turned clockwise or counterclockwise, the limit slider 331 slides in the limit slide groove 22, so that the extension barrel 2 applies axial thrust or tension to the sleeve 1.

[0070] As a preferred embodiment, a limiting slip ring 4 is also passed through the limiting cylinder 33, and the inner wall of the limiting slip ring 4 is gap-matched with the outer wall of the extension barrel 2. A plurality of clamping blocks 41 are symmetrically and integrally arranged on the outer wall of the limiting slip ring 4. A plurality of L-shaped slide grooves 332 are symmetrically opened on the inner wall of the limiting cylinder 33. The clamping blocks 41 are slidably connected in the L-shaped slide grooves 332. The transverse groove sections of the L-shaped slide grooves 332 are used to limit the movable position of the limiting slip ring 4. The limiting slip ring 4 is also connected to one end of a supporting cylinder 42, and the other end of the supporting cylinder 42 is connected to a supporting ring 43. One end of the supporting ring 43 slides and abuts against the head end of the limiting cylinder 33, and the other end of the abutting ring 43 is used to abut against the end face of the mechanical seal.

[0071] After the shaft sleeve 1 drives the mechanical seal to be removed from the pump body, the mechanical seal is engaged with the outer wall of the shaft sleeve 1. When the mechanical seal is inspected or installed back into the pump body, the mechanical seal needs to be removed from the outer wall of the shaft sleeve 1; therefore, a limiting slip ring 4 is also inserted into the limiting cylinder 33, and the limiting slip ring 4 is connected to the abutment ring 43 through the supporting cylinder 42. When the mechanical seal needs to be removed from the outer wall of the shaft sleeve 1, the screw 31 is first turned counterclockwise to drive the extension barrel 2 to slide toward the head end of the limiting cylinder 33, so that the mechanical seal moves away from the limiting cylinder 33, and then the supporting cylinder 42 is pulled out of the limiting cylinder 33 through the abutment ring 43, and the block 41 on the outer wall of the limiting slip ring 4 slides along the vertical groove section of the L-shaped groove 332. After the block 41 slides to the bottom end of the vertical groove section, the abutment ring 43 is rotated to make the block 41 slide into the horizontal groove section of the L-shaped slide groove 332. The block 41 cooperates with the horizontal groove section of the L-shaped slide groove 332 to limit the axial sliding of the limiting sliding ring 4, so that the support tube 42 supports and erects the abutment ring 43; then the screw rod 31 is turned clockwise to drive the extension barrel 2 to slide toward the tail end of the limiting tube 33. After sliding, the end face of the mechanical seal abuts against the abutment ring 43, and the abutment ring 43 limits the mechanical seal from further moving with the shaft sleeve 1. As the screw rod 31 is further turned clockwise, the shaft sleeve 1 is gradually removed from the mechanical seal, thereby realizing the disassembly and separation of the mechanical seal and the shaft sleeve 1.

[0072] Furthermore, a rubber ring sheet 44 is bonded to the abutting ring 43 , and the rubber ring sheet 44 is used to separate the abutting ring 43 from the end face of the mechanical seal.

[0073] After the end face of the mechanical seal abuts against the abutment ring 43, the end face of the mechanical seal will be subjected to a large thrust, and the friction between the end face of the mechanical seal and the abutment ring 43 will cause wear. Therefore, a rubber ring sheet 44 is bonded to the abutment ring 43. When the end face of the mechanical seal abuts against the abutment ring 43, the rubber ring sheet 44 separates the abutment ring 43 from the end face of the mechanical seal to avoid friction and wear of the end face of the mechanical seal.

[0074] The above description is only a preferred embodiment of the utility model and is not intended to limit the technical solution of the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the technical solution of the utility model shall be included in the protection scope of the utility model.

Claims

1. A mechanical seal disassembly tool, characterized in that: include: A shaft sleeve, the shaft sleeve is used to be pushed into between the mechanical seal and the transmission shaft, so that after the shaft sleeve is pushed into between the mechanical seal and the transmission shaft, the inner wall of the shaft sleeve and the transmission shaft are gap-matched, and the outer wall of the shaft sleeve is engaged with the sealing ring in the mechanical seal; An extension barrel, the extension barrel is connected to the tail of the shaft sleeve, and the extension barrel is used to transmit thrust and / or pulling force to the shaft sleeve, so that when the extension barrel transmits thrust and / or pulling force, the shaft sleeve moves along the transmission shaft; A driving mechanism is transmission-connected to the extension barrel, and is used to apply an axial driving force to the extension barrel, so that when the sleeve is loosely connected to the transmission shaft, the driving mechanism drives the extension barrel to perform axial displacement.

2. The mechanical seal disassembly tool according to claim 1, characterized in that: The driving mechanism comprises: A screw rod is threadedly connected to the extension barrel, and a torsion bar is integrally provided at the head of the screw rod, and the torsion bar is used to drive the screw rod to rotate.

3. The mechanical seal disassembly tool according to claim 2, characterized in that: The driving mechanism further comprises: A limiting cylinder, wherein the limiting cylinder is slidably connected to the outer wall of the extension barrel; A limit assembly, wherein the limit assembly is connected to the limit cylinder, the limit assembly is rotationally connected to the screw rod, and the limit assembly is used to limit the movable position of the screw rod, so that when the screw rod is turned clockwise, the extension barrel slides toward the tail end of the limit cylinder, and when the screw rod is turned counterclockwise, the extension barrel slides toward the head end of the limit cylinder.

4. The mechanical seal disassembly tool according to claim 3, characterized in that: The limiting component comprises: A limiting plate, the limiting plate being mounted on the rear end of the limiting cylinder through a plurality of supporting rods; A bearing is connected through the middle position of the limit plate, and an inner ring of the bearing is fixedly connected to the screw.

5. The mechanical seal disassembly tool according to claim 2, characterized in that: The screw rod is threadedly connected to the extension barrel in the following manner: A connecting tube is also integrally provided in the extension barrel, and the connecting tube is connected through the middle position of the bottom end of the extension barrel, and the screw is threadedly connected in the connecting tube.

6. The mechanical seal disassembly tool according to claim 3, characterized in that: The limiting cylinder is slidably connected to the extension barrel in the following manner: A plurality of limiting sliding grooves are symmetrically provided on the outer wall of the extension barrel, and a plurality of limiting sliding blocks are symmetrically and integrally provided on the inner wall of the limiting cylinder. The limiting sliding blocks are slidably connected in the limiting sliding grooves.

7. The mechanical seal disassembly tool according to claim 1, characterized in that: The extension barrel is connected to the rear end of the sleeve in the following manner: An external thread is arranged on the tail of the outer wall of the sleeve, and an internal thread is arranged on the top of the inner wall of the extension barrel. The external thread is threadably connected with the internal thread. After the external thread is connected with the internal thread, the tail of the sleeve is located in the extension barrel.

8. The mechanical seal disassembly tool according to claim 2, characterized in that: The screw is set to be an M16 screw.

9. The mechanical seal disassembly tool according to claim 3, characterized in that: A limiting slip ring is also passed through the limiting cylinder, and the inner wall of the limiting slip ring is gap-matched with the outer wall of the extension barrel. A plurality of clamping blocks are symmetrically and integrally arranged on the outer wall of the limiting slip ring, and a plurality of L-shaped grooves are symmetrically opened on the inner wall of the limiting cylinder. The clamping blocks are slidably connected in the L-shaped grooves, and the transverse groove sections of the L-shaped grooves are used to limit the movable position of the limiting slip ring. The limiting slip ring is also connected to one end of the supporting cylinder, and the other end of the supporting cylinder is connected to abutting ring, and one end of the abutting ring abuts against the head end of the limiting cylinder after sliding, and the other end of the abutting ring is used to abut against the end face of the mechanical seal.

10. The mechanical seal disassembly tool according to claim 9, characterized in that: A rubber ring sheet is also bonded to the abutting ring, and the rubber ring sheet is used to separate the abutting ring from the end face of the mechanical seal.

Images