CN219623367U - Coupling device with adjustable coaxiality - Google Patents
Coupling device with adjustable coaxiality Download PDFInfo
- Publication number
- CN219623367U CN219623367U CN202320487345.9U CN202320487345U CN219623367U CN 219623367 U CN219623367 U CN 219623367U CN 202320487345 U CN202320487345 U CN 202320487345U CN 219623367 U CN219623367 U CN 219623367U
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- CN
- China
- Prior art keywords
- gasket
- lifting cage
- chuck
- bushing
- coaxiality
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Abstract
The utility model discloses a coupling device with adjustable coaxiality, a lifting cage (9) is arranged in a lifting cage sliding sleeve (16), the lifting cage and the lifting cage are in clearance fit, a chuck (22) is arranged at the lower part of the lifting cage (9), a spherical cambered surface (23) is arranged on the upper part and the lower part of the chuck (22), a bushing (8) is sleeved on a valve rod shaft diameter (19), the lower plane of the bushing (8) is tightly attached to a shaft shoulder (24), a lower sliding arc gasket (10), the chuck (22), an upper sliding arc gasket (11), a gasket (12) and a spring gasket (13) are sequentially arranged outside the bushing (8), a nut (14) is screwed into a valve rod threaded rod (15), and a clearance (18) is formed between the upper sliding arc gasket (11) and the gasket (12). The component for adjusting the coaxiality of the device has the advantages of simple structure, low manufacturing cost and convenient maintenance and replacement.
Description
Technical Field
The utility model relates to a coupling device with adjustable coaxiality.
Background
Generally, a coupling device is needed between a valve rod and an actuating mechanism of the valve, at present, a rigid clamping plate is used in most cases, and the connection strength can meet the use requirement, but the coaxiality cannot be adjusted, so that the valve rod and the actuating mechanism bear larger stress when moving up and down, and the valve rod, the shaft sleeve and the filler are easy to wear. Therefore, it is necessary to develop a coupling device with adjustable coaxiality.
Disclosure of Invention
The utility model aims to provide a coupling device with adjustable coaxiality, which realizes dynamic coaxiality adjustment through sliding of a spherical cambered surface. The technical scheme of the utility model is as follows: a shaft coupling device with adjustable coaxiality is characterized in that a valve rod (1) passes through a valve body center hole (20), a gland fastening bolt (4) fastens a packing ring gland (6) on a valve body (2), the gland fastening bolt (4) tightly presses a sealing packing ring (3) in a packing chamber (21), a bolt (7) fastens a lifting cage sliding sleeve base (5) on the valve body (2), a lifting cage (9) is arranged in a lifting cage sliding sleeve (16), the lifting cage (9) and the lifting cage sliding sleeve (16) are in clearance fit, a lifting cage traction rod (17) is arranged at the upper part of the lifting cage (9), a chuck (22) is arranged at the lower part of the lifting cage (9), a spherical cambered surface (23) is respectively arranged at the upper end face and the lower end face of the chuck (22), a bushing (8) is sleeved on a valve rod shaft diameter (19), the lower plane of the bushing (8) is tightly attached to a shaft shoulder (24), a lower arc-sliding gasket (10), a chuck (22), an upper sliding gasket (11), a gasket (12) and a spring gasket (13) are sequentially arranged outside the bushing (8), a nut (14) is assembled with the valve rod (12) and the valve rod (8) when the bushing (12) is tightly pressed to the upper plane (9), a gap (18) is arranged between the upper sliding arc gasket (11) and the gasket (12).
The gap (18) has a value of 0.04 to 0.08mm.
The diameter of the chuck (22) is 1 to 2mm larger than the outer diameter of the bushing (8).
The spherical cambered surfaces on the upper and lower sides of the chuck (22) are the same as the spherical cambered surface circular arcs of the lower sliding arc gasket (10) and the upper sliding arc gasket (11).
The working principle of the utility model is as follows:
the lifting cage (9) moves up and down in the lifting cage sliding sleeve (16) to control the lifting height of the valve rod (1), the up and down movement is accompanied by slight movement in the horizontal direction, the lower coaxial valve rod is limited in the valve body shaft sleeve and the packing ring, and stress is generated if a coupling device capable of flexibly adjusting the coaxiality is not provided. The utility model designs a coupling device with adjustable coaxiality, which adopts an upper spherical cambered surface workpiece and a lower spherical cambered surface workpiece, a lower sliding arc gasket (10) and an upper sliding arc gasket (11) are in sliding fit with a chuck (22) on a lifting cage (9), when the lifting cage (9) is not coaxial with a valve rod (1), a bushing (8) can drive the valve rod (1) to freely move in the chuck (22), and as a gap (18) of 0.04-0.08 mm is arranged between the upper sliding arc gasket (11) and the gasket (12), the diameter of the chuck (22) is 1-2 mm larger than the outer diameter of the bushing (8), the gap ensures that the valve rod (1) can freely slide in the chuck (22) and is coaxial all the time, and different coaxial stresses generated at the joint of the lifting cage (9) and the valve rod (1) are eliminated.
The utility model has the technical effects that:
according to the shaft coupling device with adjustable coaxiality, an upper spherical cambered surface workpiece and a lower spherical cambered surface workpiece are adopted, the lower sliding arc gasket (10) and the upper sliding arc gasket (11) are in sliding fit with the chuck (22) on the lifting cage (9), when the lifting cage (9) is not coaxial with the valve rod (1), the bushing (8) can drive the valve rod (1) to freely move in the chuck (22), and as a gap (18) of 0.04-0.08 mm is arranged between the upper sliding arc gasket (11) and the gasket (12), the diameter of the chuck (22) is 1-2 mm larger than the outer diameter of the bushing (8), the valve rod (1) can slide freely in the chuck (22), and the coaxiality is adjusted constantly, so that different coaxial stresses generated at the joint of the lifting cage (9) and the valve rod (1) are eliminated. The component for adjusting the coaxiality of the device has the advantages of simple structure, low manufacturing cost and convenient maintenance and replacement.
Drawings
FIG. 1 is a schematic view of the structure of the present utility model
FIG. 2 is an enlarged view of a portion of the device for adjusting coaxiality
FIG. 3 is a top view of FIG. 1
Detailed Description
As shown in figure 1, a shaft coupling device with adjustable coaxiality is characterized in that a valve rod 1 passes through a valve body center hole 20, a gland fastening bolt 4 fastens a packing ring gland 6 on a valve body 2, the gland fastening bolt 4 tightly presses a sealing packing ring 3 in a packing chamber 21, a bolt 7 fastens a lifting cage sliding sleeve base 5 on the valve body 2, as shown in figure 3, a lifting cage 9 is arranged in a lifting cage sliding sleeve 16, the lifting cage 9 and the lifting cage sliding sleeve 16 are in clearance fit, a lifting cage traction rod 17 is arranged at the upper part of the lifting cage 9, as shown in figure 2, a chuck 22 is arranged at the lower part of the lifting cage 9, a spherical cambered surface 23 is respectively arranged at the upper end surface and the lower end surface of the chuck 22, a bushing 8 is sleeved on a valve rod shaft diameter 19, a lower plane of the bushing 8 is tightly attached to a shaft shoulder 24, a lower sliding arc gasket 10, the chuck 22, an upper sliding arc gasket 11, a gasket 12 and a spring gasket 13 are sequentially arranged outside the bushing 8, the nut 14 is tightly attached to an upper plane of the bushing 8, when the lifting cage 9 is tightly pressed down on the valve rod 1, a clearance 18 is arranged between the upper arc gasket 11 and the gasket 12, the clearance 18 is 0.04 mm to the diameter of the spherical cambered surface is larger than the spherical cambered surface 1 when the spherical cambered surface is the spherical cambered surface 1 is not equal to the spherical cambered surface 1, and the spherical cambered surface is larger than the spherical cambered surface 1, and the spherical surface is larger than the spherical cambered surface 1 is equal to the spherical surface 1, and the spherical cambered surface is 1 is guaranteed, and the diameter is different from the spherical cambered surface 1 is 1. The component for adjusting the coaxiality of the device has the advantages of simple structure, low manufacturing cost and convenience in maintenance and replacement.
Claims (4)
1. An adjustable axiality's shaft coupling device, characterized by: the valve rod (1) passes through a valve body center hole (20), a gland fastening bolt (4) fastens a packing ring gland (6) on the valve body (2), the gland fastening bolt (4) tightly presses a sealing packing ring (3) in a packing chamber (21), a bolt (7) fastens a lifting cage sliding sleeve base (5) on the valve body (2), a lifting cage (9) is arranged in a lifting cage sliding sleeve (16), the lifting cage (9) and the lifting cage sliding sleeve (16) are in clearance fit, a lifting cage traction rod (17) is arranged at the upper part of the lifting cage (9), a chuck (22) is arranged at the lower part of the lifting cage (9), a spherical cambered surface (23) is arranged at the upper end face and the lower end face of the chuck (22), a bushing (8) is sleeved on a valve rod shaft diameter (19), the lower plane of the bushing (8) is tightly attached to a lower sliding arc gasket (10), a chuck (22), an upper sliding arc gasket (11), a gasket (12) and a spring gasket (13) are sequentially arranged outside the bushing (8), a nut (14) is assembled with the lifting cage sliding rod (16), the gasket (12) is tightly attached to the upper plane of the valve rod (8) when the bushing (1) is tightly pressed, a gap (18) is arranged between the upper sliding arc gasket (11) and the gasket (12).
2. The adjustable coaxiality coupling device according to claim 1, wherein: the gap (18) has a value of 0.04 to 0.08mm.
3. The adjustable coaxiality coupling device according to claim 1, wherein: the diameter of the chuck (22) is 1 to 2mm larger than the outer diameter of the bushing (8).
4. The adjustable coaxiality coupling device according to claim 1, wherein: the spherical cambered surfaces on the upper and lower sides of the chuck (22) are the same as the spherical cambered surface circular arcs of the lower sliding arc gasket (10) and the upper sliding arc gasket (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320487345.9U CN219623367U (en) | 2023-03-15 | 2023-03-15 | Coupling device with adjustable coaxiality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320487345.9U CN219623367U (en) | 2023-03-15 | 2023-03-15 | Coupling device with adjustable coaxiality |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219623367U true CN219623367U (en) | 2023-09-01 |
Family
ID=87771524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320487345.9U Active CN219623367U (en) | 2023-03-15 | 2023-03-15 | Coupling device with adjustable coaxiality |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219623367U (en) |
-
2023
- 2023-03-15 CN CN202320487345.9U patent/CN219623367U/en active Active
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