Mechanical seal shaft sleeve structure convenient to disassemble and assemble
By designing a mechanical sealed sleeve structure that is easy to disassemble and assemble, the problem of difficulty in quickly disassembling the sleeve is solved, rapid equipment maintenance is achieved, and downtime and risk of equipment damage is reduced.
Patent Information
- Application Number
- CN202422231727.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-12
AI Technical Summary
The existing mechanical sealing shaft sleeves are difficult to quickly remove due to lubricating oil loss and deformation during long-term use, resulting in long downtime and potential damage to the equipment.
A shaft sleeve structure including middle and end mounting components is designed. By removing the cover sleeve and shell sleeve mounting bolts, tapping the end of the shaft to remove the mounting shell, and removing the sleeve mechanism as a whole to avoid damage to parts caused by violent disassembly.
It simplifies the disassembly and assembly process of shaft sleeves, reduces equipment downtime, and protects equipment integrity.
Smart Images
Figure CN223152574U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of mechanical seal shafts, and more specifically, to a mechanical seal shaft sleeve structure that is convenient for disassembly and assembly. Background Art
[0002] Different from the traditional packing seal, in the currently widely used mechanical seal, the dynamic ring assembly and the static ring assembly are respectively pre-installed on the shaft sleeve and the gland, and then fixed to the main shaft and the pump casing.
[0003] During normal installation of the seal, lubricating oil or grease is applied to the O-ring inside the shaft sleeve. However, during the operation of the mechanical seal, various factors such as high temperature, vibration, and centrifugal force can cause the lubricating oil to leak, dilute, or dissipate, and the machined parts such as the shaft sleeve will undergo irregular deformation under the action of temperature and external force; when the seal is disassembled during shutdown, it may be difficult to disassemble the mechanical seal due to poor lubrication and large resistance, resulting in a long shutdown time. At the same time, if it is pulled violently or disassembled forcibly, it is very likely to cause the O-ring to be squeezed and deformed, or the inner diameter of the shaft sleeve to scratch the main shaft of the equipment, and in severe cases, the appearance of the main shaft will be damaged, resulting in serious equipment damage and large economic losses. How to invent a mechanical seal shaft sleeve structure that is convenient for disassembly and assembly to improve these problems has become an urgent problem for those skilled in the art. Summary of the Utility Model
[0004] To make up for the above deficiencies, the utility model provides a mechanical seal shaft sleeve structure that is convenient for disassembly and assembly, aiming to improve the problem that it is difficult to quickly remove and replace when the shaft sleeve and the shaft undergo irregular deformation during long-term use.
[0005] The utility model is realized as follows: A mechanical seal shaft sleeve structure that is convenient for disassembly and assembly includes
[0006] A housing, the housing includes a mounting shell and a sealing cover, and the mounting shell is installed at the end of the sealing cover;
[0007] A shaft sleeve mechanism, the shaft sleeve mechanism includes a middle mounting component and an end mounting component, the end mounting component is sleeved on one end of the middle mounting component, the middle mounting component includes a shaft rod and a shell shaft sleeve, the shaft rod and the shell shaft sleeve are installed in a limit-sealed manner on one side of the mounting shell, and the end mounting component is installed in a limit-sealed manner on one side of the mounting shell.
[0008] In a preferred technical solution of the utility model, the middle mounting component further includes a first bearing, the first bearing is sleeved on the shaft rod in a limited manner, the shell shaft sleeve is sleeved outside the first bearing in a limited manner, the shell shaft sleeve penetrates through the mounting shell, and the shell shaft sleeve is in sealing fit with the inner wall of the mounting shell.
[0009] In a preferred technical solution of the present utility model, an outer edge is provided at one end of the housing bushing, and the outer edge of the housing bushing is embedded and fitted to the inner wall of the mounting housing. A housing sleeve mounting bolt is threadedly penetrated through the back of the mounting housing, and the housing sleeve mounting bolt is threadedly connected to one side of the outer edge of the housing bushing.
[0010] In a preferred technical solution of the present utility model, an outer ring sealing ring is provided at the end of the housing bushing away from the mounting housing. An outer ring mounting bolt is threadedly penetrated through the outer ring sealing ring, and the outer ring mounting bolt is threadedly connected to the outer edge of the housing bushing.
[0011] In a preferred technical solution of the present utility model, a stepped ring is provided on the outer part of the inner ring of the outer ring sealing ring, and the stepped ring is in sealing contact with the outer ring of the first bearing.
[0012] In a preferred technical solution of the present utility model, an inner ring positioning ring is threadedly sleeved on the outer part of the shaft rod. A stepped ring is provided on one side of the inner ring positioning ring close to the first bearing, and the stepped ring is in sealing contact with the inner ring of the first bearing.
[0013] In a preferred technical solution of the present utility model, sealing gaskets are provided between the outer ring sealing ring and the housing bushing and the first bearing, between the inner ring positioning ring and the first bearing, and between the housing bushing and the inner wall of the mounting housing.
[0014] In a preferred technical solution of the present utility model, the end mounting assembly includes a second bearing. The inner ring of the second bearing is fixedly sleeved on the end of the shaft rod, and the outer part of the second bearing is sealingly sleeved with a cover bushing, and the cover bushing is sealingly connected to the sealing cover.
[0015] In a preferred technical solution of the present utility model, an outer edge is provided at one end of the cover bushing located inside the sealing cover. A cover sleeve mounting bolt is threadedly installed on the inner side of the outer edge of the cover bushing, and the cover sleeve mounting bolt penetrates through the outer wall of the sealing cover and is connected to the outer edge of the cover bushing.
[0016] In a preferred technical solution of the present utility model, the outer edge of the cover bushing is embedded and installed in the inner wall of the sealing cover, and a sealing gasket is provided between the outer edge of the cover bushing and the sealing cover.
[0017] The beneficial effects of the present utility model are as follows: A mechanically sealed shaft sleeve structure that is convenient for disassembly and assembly is obtained through the above design. During use, first remove the cover sleeve installation bolts and the bolts connecting the installation shell and the sealing cover. When removing, take off the sealing cover. At this time, the end installation component is exposed. Then remove the shell sleeve installation bolts, and gently tap the end of the shaft rod to make the shell shaft sleeve disengage from the installation shell. After removing the entire shaft sleeve mechanism, replace it with a new one (or a repaired and maintained one). Install the shaft sleeve mechanism through the shell sleeve installation bolts and the cover sleeve installation bolts, which will not affect the use of the equipment. After installation, remove the cover shaft sleeve and the shell shaft sleeve, etc. If it is stuck, use methods such as lubrication, tapping, heating, and cooling to remove it to avoid damage to parts caused by violent pulling and forced disassembly, which is convenient for direct removal and effectively reduces the equipment downtime. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.
[0019] Figure 1 is a schematic structural diagram of one side provided by the embodiment of the present utility model;
[0020] Figure 2 is a schematic internal structure diagram provided by the embodiment of the present utility model;
[0021] Figure 3 is a schematic structural diagram of the middle installation component provided by the embodiment of the present utility model;
[0022] Figure 4 is a schematic structural diagram of the end installation component provided by the embodiment of the present utility model.
[0023] In the figure: 100 - housing; 110 - installation shell; 120 - sealing cover; 200 - shaft sleeve mechanism; 210 - middle installation component; 211 - shaft rod; 212 - first bearing; 213 - shell shaft sleeve; 214 - shell sleeve installation bolt; 215 - outer ring sealing ring; 216 - outer ring installation bolt; 217 - inner ring positioning ring; 220 - end installation component; 221 - second bearing; 222 - cover shaft sleeve; 223 - cover sleeve installation bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.
[0025] Please refer to Figure 1 and Figure 2 The present utility model provides a technical solution: a mechanical seal shaft sleeve structure that is easy to disassemble and assemble, including
[0026] a housing 100, the housing 100 includes a mounting shell 110 and a sealing cover 120, and the mounting shell 110 is installed at the end of the sealing cover 120; a shaft sleeve mechanism 200, the shaft sleeve mechanism 200 includes a middle mounting component 210 and an end mounting component 220, the end mounting component 220 is sleeved on one end of the middle mounting component 210, the middle mounting component 210 includes a shaft rod 211 and a shell shaft sleeve 213, the shaft rod 211 and the shell shaft sleeve 213 are installed in a limiting and sealing manner on one side of the mounting shell 110, the end mounting component 220 is installed in a limiting and sealing manner on one side of the mounting shell 110, the middle mounting component 210 and the end mounting component 220 are respectively sealingly connected to the mounting shell 110 and the sealing cover 120. When disassembling, the middle mounting component 210 and the end mounting component 220 are removed as a whole to prevent the shaft rod 211 from getting stuck in the mounting shell 110 and the sealing cover 120, which may cause difficulty in disassembly and affect the normal operation of the equipment. By directly removing the middle mounting component 210 and the end mounting component 220 for replacement, the normal operation of the equipment is facilitated, and the downtime of the equipment is reduced.
[0027] Please refer to Figure 2 and Figure 3 The middle mounting component 210 further includes a first bearing 212, the first bearing 212 is sleeved on the shaft rod 211 in a limiting manner, the shell shaft sleeve 213 is sleeved on the outside of the first bearing 212 in a limiting manner, the shell shaft sleeve 213 penetrates through the mounting shell 110, and the shell shaft sleeve 213 is in sealing fit with the inner wall of the mounting shell 110.
[0028] One end of the housing bushing 213 is provided with an outer edge, and the outer edge of the housing bushing 213 is embedded and fitted to the inner wall of the mounting housing 110. A housing sleeve mounting bolt 214 is threadedly penetrated through the back of the mounting housing 110, and the housing sleeve mounting bolt 214 is threadedly connected to one side of the outer edge of the housing bushing 213. The housing sleeve mounting bolt 214 is used to closely fit the housing bushing 213 and the mounting housing 110. One end of the housing bushing 213 away from the mounting housing 110 is provided with an outer ring seal ring 215, and an outer ring mounting bolt 216 is threadedly penetrated through the outer ring seal ring 215. The outer ring mounting bolt 216 is threadedly connected to the outer edge of the housing bushing 213. A step ring is provided on the outside of the inner ring of the outer ring seal ring 215, and the step ring is in sealing contact with the outer ring of the first bearing 212. The step ring is used to seal the outer ring of the first bearing 212.
[0029] An inner ring positioning ring 217 is threadedly sleeved on the outside of the shaft rod 211. A step ring is provided on one side of the inner ring positioning ring 217 close to the first bearing 212, and the step ring is in sealing contact with the inner ring of the first bearing 212. The step ring is used to seal the inner ring of the first bearing 212. Sealing gaskets are provided between the outer ring seal ring 215 and the housing bushing 213 and the first bearing 212 respectively, a sealing gasket is provided between the inner ring positioning ring 217 and the first bearing 212, and a sealing gasket is provided between the housing bushing 213 and the inner wall of the mounting housing 110 to increase the sealing effect.
[0030] Please refer to Figure 2 and Figure 4 , the end mounting assembly 220 includes a second bearing 221. The inner ring of the second bearing 221 is fixedly sleeved on the end of the shaft rod 211, and the outside of the second bearing 221 is sealingly sleeved with a cover bushing 222. The cover bushing 222 is sealingly connected to the sealing cover 120.
[0031] One end of the cover bushing 222 located inside the sealing cover 120 is provided with an outer edge, and a cover sleeve mounting bolt 223 is threadedly installed on the inner side of the outer edge of the cover bushing 222. The cover sleeve mounting bolt 223 penetrates through the outer wall of the sealing cover 120 and is connected to the outer edge of the cover bushing 222. The outer edge of the cover bushing 222 is embedded and installed on the inner wall of the sealing cover 120. A sealing gasket is provided between the outer edge of the cover bushing 222 and the sealing cover 120, which is convenient for removing the shaft rod 211 and avoiding jamming. The cover bushing 222 is removed by screwing the cover sleeve mounting bolt 223.
[0032] Working principle: When the bushing mechanism 200 needs to be removed, first remove the cover sleeve installation bolts 223 and the bolts connecting the installation shell 110 and the sealing cover 120. When removing, take off the sealing cover 120. At this time, the end installation assembly 220 is exposed. Then remove the shell sleeve installation bolts 214. Gently tap the end of the shaft rod 211 to make the shell bushing 213 disengage from the installation shell 110. After removing the bushing mechanism 200 as a whole, replace it with a new one (or a repaired and maintained one). Install the bushing mechanism 200 through the shell sleeve installation bolts 214 and the cover sleeve installation bolts 223, which will not affect the use of the equipment. After installation, remove the cover bushing 222 and the shell bushing 213, etc. If it is stuck, use methods such as lubrication, tapping, heating, and cooling to remove it to avoid damage to parts caused by violent pulling and forced disassembly.
[0033] The above is only the preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A mechanical seal shaft sleeve structure that is convenient for disassembly and assembly, characterized in that including a housing, the housing including a mounting shell and a sealing cover, the mounting shell being mounted at an end of the sealing cover; a bushing mechanism, the bushing mechanism including a middle mounting assembly and an end mounting assembly, the end mounting assembly being sleeved on one end of the middle mounting assembly, the middle mounting assembly including a shaft rod and a housing bushing, the shaft rod and the housing bushing being limit-sealed and mounted on one side of the mounting shell, and the end mounting assembly being limit-sealed and mounted on one side of the mounting shell.
2. The structure of a mechanical seal shaft sleeve that is easy to disassemble and assemble according to claim 1, wherein: The middle mounting assembly further includes a first bearing, the first bearing being sleeved on the shaft rod, the housing bushing being sleeved outside the first bearing, the housing bushing penetrating through the mounting shell, and the housing bushing being in sealing fit with the inner wall of the mounting shell.
3. The structure of a mechanical seal shaft sleeve that is convenient for disassembly and assembly according to claim 2, characterized in that: One end of the housing bushing is provided with an outer edge, the outer edge of the housing bushing being embedded and fitted to the inner wall of the mounting shell, and a housing sleeve mounting bolt is threadedly penetrated through the back of the mounting shell, the housing sleeve mounting bolt being threadedly connected to one side of the outer edge of the housing bushing.
4. A mechanically sealed shaft sleeve structure that is convenient for disassembly and assembly according to claim 3, characterized in that: One end of the housing bushing away from the mounting shell is provided with an outer ring sealing ring, and an outer ring mounting bolt is threadedly penetrated through the outer ring sealing ring, the outer ring mounting bolt being threadedly connected to the outer edge of the housing bushing.
5. The structure of a mechanical seal shaft sleeve that is convenient for disassembly and assembly according to claim 4, characterized in that: A step ring is provided outside the inner ring of the outer ring sealing ring, and the step ring is in sealing contact with the outer ring of the first bearing.
6. The structure of a mechanical seal shaft sleeve that is convenient for disassembly and assembly according to claim 5, wherein: An inner ring positioning ring is threadedly sleeved on the outside of the shaft rod, and a step ring is provided on one side of the inner ring positioning ring close to the first bearing, and the step ring is in sealing contact with the inner ring of the first bearing.
7. The structure of a mechanical seal shaft sleeve that is convenient for disassembly and assembly according to claim 6, wherein: Sealing gaskets are provided between the outer ring sealing ring and the housing bushing and the first bearing respectively, a sealing gasket is provided between the inner ring positioning ring and the first bearing, and a sealing gasket is provided between the housing bushing and the inner wall of the mounting shell.
8. The structure of a mechanical seal shaft sleeve that is convenient for disassembly and assembly according to claim 1, wherein: The end mounting assembly includes a second bearing, the inner ring of the second bearing being fixedly sleeved on the end of the shaft rod, and a cover bushing being hermetically sleeved outside the second bearing, the cover bushing being hermetically connected to the sealing cover.
9. The structure of a mechanical seal shaft sleeve that is convenient for disassembly and assembly according to claim 8, characterized in that: One end of the cover bushing located inside the sealing cover is provided with an outer edge, and a cover sleeve mounting bolt is threadedly mounted on the inner side of the outer edge of the cover bushing, the cover sleeve mounting bolt penetrating through the outer wall of the sealing cover and being connected to the outer edge of the cover bushing.
10. A mechanical seal shaft sleeve structure that is convenient for disassembly and assembly according to claim 9, characterized in that: The outer edge of the cover bushing is embedded and mounted on the inner wall of the sealing cover, and a sealing gasket is provided between the outer edge of the cover bushing and the sealing cover.