CN220302391U - Mechanical seal shaft sleeve for pump and mechanical seal device for pump - Google Patents
Mechanical seal shaft sleeve for pump and mechanical seal device for pump Download PDFInfo
- Publication number
- CN220302391U CN220302391U CN202321573841.2U CN202321573841U CN220302391U CN 220302391 U CN220302391 U CN 220302391U CN 202321573841 U CN202321573841 U CN 202321573841U CN 220302391 U CN220302391 U CN 220302391U
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- CN
- China
- Prior art keywords
- pump
- shaft sleeve
- sleeve body
- shaft
- mechanical seal
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- 238000007789 sealing Methods 0.000 claims abstract description 27
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to the technical field of sealing, in particular to a mechanical sealing shaft sleeve for a pump and a mechanical sealing device for the pump, which comprises a shaft sleeve body, wherein an inner thread section is fixedly arranged on the inner wall of the shaft sleeve body, a threaded hole is formed in one end side wall of the shaft sleeve body, a step is fixedly arranged on the outer wall of the other end of the shaft sleeve body, a dismounting groove is formed in the shaft sleeve body, a sealing groove is formed in the inner wall of one end of the shaft sleeve body, which is far away from the threaded hole, of the shaft sleeve body, the mechanical sealing device for the pump comprises a pump shaft, a mechanical sealing cover and a pump shell, the pump shaft is provided with the mechanical sealing shaft sleeve, the pump shaft is provided with an outer thread section, the shaft sleeve body is sleeved on the pump shaft, the shaft sleeve body is in threaded sealing connection with the pump shaft, the shaft sleeve body is fixedly connected with the shaft sleeve body through screws and the threaded hole, one end of the mechanical sealing sleeve abuts against the step, and the other end of the mechanical sealing sleeve is fixedly connected with the pump cover.
Description
Technical Field
The utility model relates to the technical field of sealing, in particular to a mechanical sealing shaft sleeve for a pump and a mechanical sealing device for the pump.
Background
At present, a traditional centrifugal pump rotor is provided with a shaft sleeve and a mechanical seal shaft sleeve and is arranged on a pump shaft, in the assembly process, the compression amount of a spring of the mechanical seal can be influenced by the accumulated machining errors of parts, so that the pre-compression amount is inaccurate and deviates from the compression amount designed by a mechanical seal manufacturer, the service life of the mechanical seal is further influenced, and when the compression amount of the mechanical seal at two sides is adjusted, the mechanical seal is required to be adjusted for multiple times, the operation is inconvenient and the efficiency is low, and on the other hand, the mechanical seal shaft sleeve is difficult to detach and is extremely inconvenient to maintain and repair.
Disclosure of Invention
The utility model aims to solve the defects in the prior art and provide the mechanical sealing shaft sleeve for the pump and the mechanical sealing device for the pump, which have the advantages of ingenious structure, convenience in assembly and disassembly, adjustable axial position of the shaft sleeve, convenience in operation and long service life.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
a mechanical seal axle sleeve for pump which characterized in that: the novel mechanical seal device comprises a shaft sleeve body, wherein an internal thread section is fixedly arranged on the inner wall of the shaft sleeve body, a threaded hole is formed in the side wall of one end of the shaft sleeve body, a step is fixedly arranged on the outer wall of the other end of the shaft sleeve body, the threaded hole is radially formed in the shaft sleeve body, the shaft sleeve body is connected with a pump shaft through threads, the relative position of the shaft sleeve body and the pump shaft is adjustable through threaded connection, the shaft sleeve body and the pump shaft are abutted against each other through screws passing through the threaded hole and the pump shaft, the shaft sleeve body is fixedly connected with the position of the pump shaft, and the step is used for being abutted against mechanical seal.
The shaft sleeve body is provided with the dismounting grooves at one end close to the threaded hole, the dismounting grooves are circumferentially distributed, and the opening of each dismounting groove faces outwards, so that the dismounting grooves can be clamped by a tool conveniently, and the shaft sleeve body is dismounted.
According to the utility model, the inner wall of one end of the shaft sleeve body far away from the threaded hole is provided with the sealing groove, so that the sealing ring is convenient to install.
The utility model provides a mechanical seal device for pump, includes pump shaft, mechanical seal, pump cover and pump case, its characterized in that: the mechanical seal shaft sleeve for the pump is arranged on the pump shaft, the external thread section is arranged on the pump shaft, the shaft sleeve body is sleeved on the pump shaft, the shaft sleeve body is in threaded sealing connection with the pump shaft through the internal thread section and the external thread section, a screw is arranged in the threaded hole, the screw passes through the threaded hole to abut against the pump shaft, the screw is in threaded connection with the shaft sleeve body to fixedly connect the shaft sleeve body with the pump shaft, the mechanical seal sleeve is connected with the shaft sleeve body on the shaft sleeve body, one end of the mechanical seal abuts against the step, the other end of the mechanical seal sleeve is fixedly connected with the pump cover, the pump cover is fixedly connected with the pump shell, the shaft sleeve body can axially move relative to the pump shaft due to the internal thread section and the external thread section, the shaft sleeve body is axially moved to drive one end of the mechanical seal to axially move, the spring compression amount between two ends of the mechanical seal is adjusted, and the mechanical seal is in threaded connection and convenient to assemble and disassemble.
Due to the adoption of the structure, the utility model has the advantages of ingenious structure, convenient assembly and disassembly, adjustable axial position of the shaft sleeve, convenient operation, long service life and the like.
Drawings
Fig. 1 is a schematic structural view of a mechanical seal bushing for a pump according to the present utility model.
Fig. 2 is a view in the direction a of fig. 1 in the present utility model.
Fig. 3 is a schematic structural view of the mechanical seal device for a pump of the present utility model.
Reference numerals: the shaft sleeve comprises a shaft sleeve body 1, an internal thread section 2, a threaded hole 3, a step 4, a dismounting groove 5, a sealing groove 6, a pump shaft 7, a mechanical seal 8, a pump cover 9, a pump shell 10, a screw 11 and a sealing ring 12.
Detailed Description
The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings.
A mechanical seal axle sleeve for pump which characterized in that: including axle sleeve body 1, axle sleeve body 1 inner wall is fixed to be equipped with internal thread section 2, axle sleeve body 1 one end lateral wall is equipped with screw hole 3, and the other end outer wall is fixed to be equipped with step 4, screw hole 3 radially sets up to do benefit to the axle sleeve body and pass through screw thread and pump shaft connection, threaded connection makes axle sleeve body and pump shaft relative position adjustable, passes screw hole and pump shaft counterbalance through and leans on axle sleeve body and pump shaft position fixed connection, and the step is used for leaning on with mechanical seal 8.
According to the utility model, one end of the shaft sleeve body 1, which is close to the threaded hole 3, is provided with the dismounting grooves 5, the dismounting grooves 5 are circumferentially distributed, and the opening of the dismounting grooves 5 faces outwards, so that the dismounting grooves can be clamped by a tool conveniently, and the shaft sleeve body can be dismounted.
According to the utility model, the inner wall of one end of the shaft sleeve body 1 far away from the threaded hole 3 is provided with the sealing groove 6, so that the sealing ring is convenient to install.
The utility model provides a mechanical seal device for pump, includes pump shaft 7, mechanical seal 8, pump cover 9 and pump case 10, its characterized in that: the mechanical seal shaft sleeve for the pump is arranged on the pump shaft 7, the external thread section is arranged on the pump shaft 7, the shaft sleeve body 1 is sleeved on the pump shaft 7, the shaft sleeve body 1 is in threaded sealing connection with the pump shaft 7 through the internal thread section 2 and the external thread section, a screw 11 is arranged in the threaded hole 3, the screw 11 passes through the threaded hole 3 to abut against the pump shaft 7, the screw 11 is in threaded connection with the shaft sleeve body 1 to fixedly connect the shaft sleeve body 1 with the pump shaft 7, the mechanical seal 8 is sleeved on the shaft sleeve body 1 to fixedly connect with the shaft sleeve body 1, one end of the mechanical seal 8 abuts against the step 4, the other end of the mechanical seal 8 is fixedly connected with the pump cover 9, the pump cover 9 is fixedly connected with the pump shell 10, so that the shaft sleeve body can axially move relative to the pump shaft, the shaft sleeve body axially moves to drive one end of the mechanical seal to axially move, the spring compression amount between two ends of the mechanical seal is adjusted, and the mechanical seal is in threaded connection is convenient to assemble and disassemble.
For convenience in description, a seal groove 6 is formed in the inner wall of the left end of the shaft sleeve body 1, a step 4 is formed in the outer wall of the left end of the shaft sleeve body 1, the outer diameter of the outer wall of the left end of the shaft sleeve body 1 is larger than the outer diameter of the outer wall of the right portion of the shaft sleeve body 1, the step 4 is used for propping against a mechanical seal 8, an internal thread section 2 is fixed on the inner wall of the right portion of the shaft sleeve body 1, a threaded hole 3 is formed in the right side of the internal thread section 2, the threaded hole 3 is matched with the threaded hole 3 through a screw 11, rotation of the shaft sleeve body 1 is limited, the threaded hole 3 is distributed radially, a disassembly groove 5 is formed in the end face of the right end of the shaft sleeve body 1, the disassembly groove 5 is U-shaped, an opening of the disassembly groove 5 faces right, and the disassembly groove 5 is used for being connected with a spanner to drive the shaft sleeve body 1 to rotate, so that the assembly and disassembly of the shaft sleeve body 1 are realized, and pump maintenance and repair efficiency are improved.
When in use, the mechanical seal shaft sleeve for the pump is arranged on the mechanical seal device for the pump for use, firstly, the mechanical seal 8 is arranged at the step 4 of the shaft sleeve body 1, the sealing ring 12 is arranged in the sealing groove 6 of the shaft sleeve body 1, then the shaft sleeve body 1 is sleeved on the pump shaft 7, the dismounting groove 5 of the shaft sleeve body 1 is hooked by a hook wrench, the hook wrench drives the shaft sleeve body 1 to rotate, the left and right positions of the shaft sleeve body 1 on the pump shaft 7 are adjusted, after the position adjustment is proper, the screw 11 is abutted against the pump shaft 7 through the threaded hole 3 to fix the shaft sleeve body 1 on the pump shaft 7, the right end of the mechanical seal 8 is fixedly connected with the pump cover 9, the pump cover 9 is fixedly connected with the pump shell 10 through the screw, namely, the installation is completed, when the disassembly is needed, the pump cover 9 is disassembled, the screw 11 is removed, the hook wrench is used to be inserted into the dismounting groove 5, the shaft sleeve body 1 is driven to rotate, the shaft sleeve body 1 is taken down from the pump shaft 7,
according to the utility model, the shaft sleeve body 1 is arranged on the pump shaft 7 through threads and the screw 11, the mechanical seal 8 is fixed on the shaft sleeve body 1 and is fixed on the pump shell 10 through the pump cover 9 by bolts, the shaft sleeve body 1 and the pump shaft 7 are axially fixed in a threaded mode, the shaft sleeve body 1 is prevented from rotating, and the stable operation of the mechanical seal 8 can be ensured.
Due to the adoption of the structure, the utility model has the advantages of ingenious structure, convenient assembly and disassembly, adjustable axial position of the shaft sleeve, convenient operation, long service life and the like.
Claims (5)
1. A mechanical seal axle sleeve for pump which characterized in that: the novel shaft sleeve comprises a shaft sleeve body, an inner thread section is fixedly arranged on the inner wall of the shaft sleeve body, a threaded hole is formed in the side wall of one end of the shaft sleeve body, and the threaded hole is radially formed.
2. A mechanical seal bushing for a pump according to claim 1, wherein: the outer wall of the other end of the shaft sleeve body is fixedly provided with a step.
3. A mechanical seal bushing for a pump according to claim 1 or 2, characterized in that: the axle sleeve body is close to the one end of screw hole and is equipped with the dismouting groove, the dismouting groove is circumference and distributes, the dismouting groove opening is outwards.
4. A mechanical seal bushing for a pump according to claim 1 or 2, characterized in that: the inner wall of one end of the shaft sleeve body far away from the threaded hole is provided with a sealing groove.
5. The utility model provides a mechanical seal device for pump, includes pump shaft, mechanical seal, pump cover and pump case, its characterized in that: the mechanical seal shaft sleeve for the pump is characterized in that the pump shaft is provided with the mechanical seal shaft sleeve for the pump according to claim 1 or 2, the pump shaft is provided with an external thread section, the shaft sleeve body is sleeved on the pump shaft, the shaft sleeve body is in threaded sealing connection with the pump shaft through the internal thread section and the external thread section, a screw is arranged in the threaded hole, the screw passes through the threaded hole to abut against the pump shaft, the screw is in threaded connection with the shaft sleeve body to fixedly connect the shaft sleeve body with the pump shaft, the mechanical seal sleeve is connected with the shaft sleeve body, one end of the mechanical seal abuts against the step, the other end of the mechanical seal sleeve is fixedly connected with the pump cover, and the pump cover is fixedly connected with the pump shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321573841.2U CN220302391U (en) | 2023-06-20 | 2023-06-20 | Mechanical seal shaft sleeve for pump and mechanical seal device for pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321573841.2U CN220302391U (en) | 2023-06-20 | 2023-06-20 | Mechanical seal shaft sleeve for pump and mechanical seal device for pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220302391U true CN220302391U (en) | 2024-01-05 |
Family
ID=89347098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321573841.2U Active CN220302391U (en) | 2023-06-20 | 2023-06-20 | Mechanical seal shaft sleeve for pump and mechanical seal device for pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220302391U (en) |
-
2023
- 2023-06-20 CN CN202321573841.2U patent/CN220302391U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |