CN211874962U - Shaft sleeve transmission mechanism of high-pressure mechanical seal and sealing device - Google Patents
Shaft sleeve transmission mechanism of high-pressure mechanical seal and sealing device Download PDFInfo
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- CN211874962U CN211874962U CN201922152533.2U CN201922152533U CN211874962U CN 211874962 U CN211874962 U CN 211874962U CN 201922152533 U CN201922152533 U CN 201922152533U CN 211874962 U CN211874962 U CN 211874962U
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- shaft sleeve
- shaft
- ring
- fastening
- piston ring
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Abstract
The utility model belongs to the technical field of mechanical seal, in particular to a shaft sleeve transmission mechanism and a sealing device of high-pressure mechanical seal, wherein the shaft sleeve transmission mechanism comprises a shaft sleeve (1) sleeved on a shaft, a fastening ring (2), a piston ring (3) and a bolt 4; the piston ring (3) is arranged outside the shaft sleeve (1), and the fastening ring (2) is fixed outside the piston ring (3); the upper end of the shaft sleeve (1) is provided with a plurality of notches a, so that the deformation force and the elasticity of the shaft sleeve are increased; the piston ring (3) is provided with a notch b, is matched with the fastening ring (2) through two wedge surfaces c and d, forms radial compression through the fastening force of the bolt (4), and hoops the fastening ring (2) and the shaft to transmit through the friction force after clasping. The damage to the shaft caused by the tightening transmission of the jackscrew is eliminated. The shaft does not need to be provided with grooves and counter bores, the strength of the shaft is not affected, and the processing cost and the material cost are reduced.
Description
Technical Field
The utility model belongs to the technical field of mechanical seal, concretely relates to high pressure mechanical seal's axle sleeve drive mechanism still provides the high pressure mechanical seal device including this drive mechanism simultaneously.
Background
The existing mechanical seal shaft sleeve transmission mode mainly adopts a mode of fastening a jackscrew or processing a groove and a counter bore on a shaft and a mode of clamping a one-way wedge surface for transmission, and has various defects. 1. The jackscrew fastening mode can extrude the pit on the axle, and the peripheral deformation of pit can influence the dismouting of axle sleeve and damage axle sleeve sealing washer. 2. The mode of epaxial processing slot, counter bore transmits, and the processing cost increases, the intensity of the influence axle that can be very big simultaneously. 3. The clamping force of the unidirectional wedge surface clamping transmission mode is small, and the unidirectional wedge surface clamping transmission mode cannot be used in occasions with large axial force.
SUMMERY OF THE UTILITY MODEL
In view of the above problem, the present invention provides a shaft sleeve transmission mechanism of a high-pressure mechanical seal, which includes a shaft sleeve 1, a fastening ring 2, a piston ring 3 and a bolt 4; the piston ring 3 is arranged outside the shaft sleeve 1, and the fastening ring 2 is fixed outside the piston ring 3;
the upper end of the shaft sleeve 1 is provided with a plurality of shaft sleeve notches to increase the deformation force and elasticity of the shaft sleeve; the piston ring 3 is provided with a piston ring notch, and is matched with the fastening ring 2 through two wedge surfaces, namely a first wedge surface c and a second wedge surface d, radial compression is formed through fastening force of the bolt 4, and the fastening ring 2 and the shaft are hooped to transmit through friction force after being clasped.
Furthermore, 4 shaft sleeve notches are formed in the shaft sleeve 1.
Furthermore, the upper end of the shaft sleeve 1 is recessed to form a boss, the piston ring 3 is provided with a horizontal plane and a vertical plane of which the outer side is an inclined plane, and the vertical plane is arranged at the boss and is closely attached to and surrounds the shaft sleeve 1; the fastening ring 2 is provided with a boss and an inclined plane which are matched with the piston ring 3, and the boss and the inclined plane are combined together to form a structure with a rectangular section.
A high-pressure mechanical sealing device for sealing a shaft comprises the transmission mechanism.
The technical scheme has the advantages that: the damage to the shaft caused by the tightening transmission of the jackscrew is eliminated. The shaft does not need to be provided with grooves and counter bores, the strength of the shaft is not affected, and the processing cost and the material cost are reduced. The fastening form of the two-way wedge surfaces c and d is large and stable in fastening force, compared with the existing fastening form of the one-way wedge surface c, the fastening form of the two-way wedge surface c and d reduces the loosening phenomenon caused by the fact that the fastening force is reduced due to the deformation of the fastening ring and the piston ring towards the outer diameter direction, and the fastening form of the two-way wedge surface c and d can be applied to occasions with larger axial force, and particularly can be reliably used in the transmission of a high-pressure mechanical seal.
Drawings
Fig. 1 is a schematic structural view of the utility model;
fig. 2 is a schematic top view of the present invention;
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-2, the present invention provides a shaft sleeve transmission mechanism of a high pressure mechanical seal, which comprises a shaft sleeve 1 sleeved on a shaft, a fastening ring 2, an expansion ring 3 and a bolt 4; the piston ring 3 is arranged outside the shaft sleeve 1, and the fastening ring 2 is fixed outside the piston ring 3;
the upper end of the shaft sleeve 1 is provided with a plurality of shaft sleeve notches, and the deformation force and elasticity of the shaft sleeve are increased at a position a in figure 2; the piston ring 3 is provided with a piston ring notch, which divides the piston ring 3 into openings, i.e. the opening is broken, in fig. 2 b. Through the cooperation of the two wedge surfaces of the first wedge surface c and the second wedge surface d in the figure 1 and the fastening ring 2, radial compression is formed through the fastening force of the bolt 4, and the fastening ring 2 and the shaft are hooped to transmit through the friction force after clasping.
As an improvement of the scheme, 4 shaft sleeve notches are formed in the shaft sleeve 1.
As an improvement of the scheme, the upper end of the shaft sleeve 1 is recessed to form a boss, the piston ring 3 is provided with a horizontal plane and a vertical plane of which the outer side is an inclined plane, and the vertical plane is arranged at the boss and is closely attached to and surrounded on the shaft sleeve 1; the fastening ring 2 is provided with a boss and an inclined plane which are matched with the piston ring 3, and the boss and the inclined plane are combined together to form a structure with a rectangular section.
According to another aspect of the present invention, there is provided a high-pressure mechanical seal device for sealing a shaft, comprising the transmission mechanism according to any one of the above aspects.
The working principle is as follows: the design of this structure has eliminated the damage of jackscrew fastening transmission counter shaft. The shaft does not need to be provided with grooves and counter bores, and the strength of the shaft is not affected. The fastening mode of the two-way wedge surfaces c and d is adopted, the fastening force is large and stable, compared with the existing fastening mode of the one-way wedge surface c, the loosening phenomenon caused by the fact that the fastening force is reduced due to the deformation of the fastening ring and the piston ring towards the outer diameter direction is reduced, and the fastening ring and the piston ring can be applied to occasions with larger axial force, and particularly can be reliably used in the transmission of a high-pressure mechanical seal shaft sleeve.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (4)
1. The utility model provides a high pressure mechanical seal's axle sleeve drive mechanism which characterized in that: comprises a shaft sleeve (1) sleeved on a shaft, a fastening ring (2), an expansion ring (3) and a bolt (4); the piston ring (3) is arranged outside the shaft sleeve (1), and the fastening ring (2) is fixed outside the piston ring (3);
the upper end of the shaft sleeve (1) is provided with a plurality of shaft sleeve notches to increase the deformation force and elasticity of the shaft sleeve; the piston ring (3) is provided with a piston ring notch, and is matched with the fastening ring (2) through a first wedge surface and a second wedge surface, radial compression is formed through fastening force of the bolt (4), and the fastening ring (2) and the shaft are hooped to transmit through friction force after being clasped.
2. The bushing actuator of a high pressure mechanical seal of claim 1, wherein: the shaft sleeve (1) is provided with 4 shaft sleeve notches.
3. The bushing actuator of a high pressure mechanical seal of claim 1, wherein: the upper end of the shaft sleeve (1) is recessed to form a boss, the piston ring (3) is provided with a horizontal plane and a vertical plane of which the outer side is an inclined plane, and the vertical plane is arranged at the boss and is tightly attached to and surrounded on the shaft sleeve (1); the fastening ring (2) is provided with a boss and an inclined plane which are matched with the piston ring (3), and the boss and the inclined plane are combined together to form a structure with a rectangular section.
4. A seal assembly for sealing a shaft, comprising: a bushing actuator comprising a high pressure mechanical seal according to any of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922152533.2U CN211874962U (en) | 2019-12-05 | 2019-12-05 | Shaft sleeve transmission mechanism of high-pressure mechanical seal and sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922152533.2U CN211874962U (en) | 2019-12-05 | 2019-12-05 | Shaft sleeve transmission mechanism of high-pressure mechanical seal and sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211874962U true CN211874962U (en) | 2020-11-06 |
Family
ID=73244364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922152533.2U Active CN211874962U (en) | 2019-12-05 | 2019-12-05 | Shaft sleeve transmission mechanism of high-pressure mechanical seal and sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211874962U (en) |
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2019
- 2019-12-05 CN CN201922152533.2U patent/CN211874962U/en active Active
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