CN217401484U - Elastic coupling system for deep well pump - Google Patents
Elastic coupling system for deep well pump Download PDFInfo
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- CN217401484U CN217401484U CN202221117435.0U CN202221117435U CN217401484U CN 217401484 U CN217401484 U CN 217401484U CN 202221117435 U CN202221117435 U CN 202221117435U CN 217401484 U CN217401484 U CN 217401484U
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- coupling
- half coupling
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- pump shaft
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Abstract
The utility model discloses an elastic coupling system for deep-well pump. The elastic coupling system comprises a driving half coupling, an elastic part and a driven half coupling, one end face of the driving half coupling and one end face of the driven half coupling are coaxially and fixedly connected, the mutually connected end faces of the driving half coupling and the driven half coupling are coaxially provided with the same assembling holes, and the elastic part is coaxially and hermetically arranged in the assembling holes of the driving half coupling and the driven half coupling; the other end surface of the driving half coupling is coaxial and synchronously connected with a rotor shaft of a motor for driving the elastic coupling system; the other end surface of the driven half coupling is coaxially and synchronously connected with a pump shaft of the deep-well pump. The utility model discloses with the coaxial arrangement of rotor shaft and pump shaft, reduced radial force greatly, the pump shaft adopts preferred chamfer to reduce stress concentration, and elastic coupling buffering damping has reduced the condition that disconnected axle appears in pump shaft or rotor shaft, reduces maintenance rate and cost of maintenance, improves the life of pump.
Description
Technical Field
The utility model relates to an elastic coupling system, concretely relates to elastic coupling system for deep-well pump.
Background
The rotor shaft and the pump shaft of a motor on the existing well pump (particularly a deep well pump) are connected through a coupling, and then the coupling and the pump shaft are fixed through screws. The spline hole is formed in one end of the coupler, the hexagonal hole is formed in the other end of the coupler, the shaft end of the rotor shaft is matched with the spline hole, the shaft end of the pump shaft is matched with the hexagonal hole, and the coaxiality of the spline hole in the coupler and the hexagonal hole cannot be guaranteed. The pump shaft is in clearance fit with the hexagonal hole, the coupler and the pump shaft are locked by screws, and the coaxiality between the pump shaft and the hexagonal hole cannot be guaranteed. When the well pump runs, the pump shaft and the motor rotor shaft are not coaxial, and the radial force is greatly increased, so that the problem of shaft breakage of the pump shaft or the motor shaft is caused.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that exists among the background art, the utility model provides an elastic coupling system for deep-well pump, the elastic component of elastic coupling system not only can compensate the relative displacement between the two axles, has the ability of buffering damping moreover, reduces the possibility of disconnected axle, reduces maintenance rate and cost of maintenance, improves the life of pump.
The utility model adopts the technical proposal that:
the utility model discloses the elastic coupling system includes initiative half-coupling, elastic component and driven half-coupling, and the same pilot hole has all coaxially been seted up to the coaxial fixed connection of a terminal surface of initiative half-coupling and driven half-coupling on the terminal surface of initiative half-coupling and driven half-coupling interconnect, and coaxial seal installs the elastic component in the pilot hole of initiative half-coupling and driven half-coupling.
The other end surface of the driving half coupling is coaxial and synchronously connected with a rotor shaft of a motor for driving the elastic coupling system; the other end surface of the driven half coupling is coaxially and synchronously connected with a pump shaft of the deep-well pump.
The pump shaft of the deep well pump is coaxial with the rotor shaft of the motor, the radial force is greatly reduced, and the occurrence of shaft breakage of the pump shaft or the rotor shaft can be greatly reduced.
The elastic piece is arranged in the assembly hole, so that the sand and mud can be prevented from entering during working, and the abrasion of the elastic piece is reduced.
The driving half coupling and the driven half coupling are cylindrical and have the same diameter.
The elastic piece is in a gear shape; a plurality of convex teeth are uniformly arranged on the inner side wall of the assembling hole of the driving half coupling at intervals along the circumferential direction; and a plurality of convex teeth are uniformly arranged on the inner side wall of the assembling hole of the driven half coupling at intervals along the circumferential direction.
The driving half coupling and the driven half coupling are elastically meshed with each other through the convex teeth and the elastic pieces.
The convex teeth of the driving half coupling and the convex teeth of the driven half coupling are arranged in the tooth gaps of the elastic parts at intervals in a staggered mode and are fixedly connected with the elastic parts.
The number of the convex teeth of the driving half coupling is the same as that of the convex teeth of the driven half coupling, and the number of the convex teeth of the driving half coupling is half of the number of teeth of the elastic piece.
The tooth parts of the elastic piece can be replaced by different shapes and numbers according to the actual load requirement.
The elastic piece is made of rubber and the like.
The elastic piece enables the pump shaft to buffer and damp, reduces the possibility of shaft breakage, reduces the maintenance rate and the maintenance cost, and prolongs the service life of the deep well pump.
The thickness of the elastic piece is twice of the depth of the assembling hole; the diameter of the elastic member is equal to the diameter of the fitting hole.
And the other end surface of the driving half coupling is coaxially provided with a spline hole, and a rotor shaft of the motor is synchronously connected in the spline hole.
And the other end surface of the driven half coupling is coaxially provided with a pump shaft hole, and a pump shaft of the deep-well pump is synchronously connected in the pump shaft hole.
The device also comprises a connecting piece; the outer side wall of the driven half coupling is radially provided with a fixing hole communicated with the pump shaft hole, and the fixing hole is close to the end part of the pump shaft connected in the pump shaft hole;
the connecting piece is arranged in the fixed hole, the outer end of the connecting piece does not protrude out of the outer side wall of the driven half-coupling, and the inner end of the connecting piece is clamped in the pump shaft hole.
The connecting piece is used for limiting the end part of the pump shaft to be fixed in the driven half coupling.
The pump shaft hole is a multi-square hole with the same shape as the shaft surface of the pump shaft, and each corner of the multi-square hole is a fillet.
The square holes can be triangular, square or hexagonal according to different shapes of the pump shaft.
The pump shaft is preferably chamfered, so that stress concentration can be reduced, and the pump shaft needs to be integrally used with the elastic coupling system.
When the rotor shaft of the motor and the pump shaft of the deep-well pump are synchronously connected through the elastic coupling system, the rotor shaft of the motor rotates around the axis of the motor, the driving half coupling is driven to rotate through the torque transmitted by the spline hole, then the driven half coupling is driven to rotate around the axis of the motor through the elastic piece, finally the pump shaft of the deep-well pump is driven to rotate around the axis of the deep-well pump, and the impeller of the deep-well pump connected with the pump shaft is driven to rotate.
The utility model has the advantages that:
the utility model discloses with the coaxial arrangement of rotor shaft and pump shaft, reduced radial force greatly, the pump shaft adopts preferred chamfer to reduce stress concentration, and elastic coupling buffering damping has reduced the condition that disconnected axle appears in pump shaft or rotor shaft, reduces maintenance rate and cost of maintenance, improves the life of pump.
Drawings
Fig. 1 is a schematic structural diagram of a coupling and a pump shaft in the present invention;
FIG. 2 is a schematic cross-sectional view of the coupling and pump shaft of the present invention;
FIG. 3 is a top view of a preferred fillet for coupling and pump shaft engagement in accordance with the present invention;
FIG. 4 is a top view of an example type of coupling spring of the present invention;
fig. 5 is a top view of an example type of active coupling half in the present invention;
in the figure: 1. driving half coupling 2, driven half coupling 3, shaft coupling 4, connecting piece 5, pump shaft.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 and 2, the elastic coupling system comprises a driving half coupling 1, an elastic part 2 and a driven half coupling 3, one end surface of the driving half coupling 1 and one end surface of the driven half coupling 3 are coaxially and fixedly connected, the same assembling holes are coaxially formed in the end surfaces of the driving half coupling 1 and the driven half coupling 3 which are mutually connected, and the elastic part 2 is coaxially and hermetically installed in the assembling holes of the driving half coupling 1 and the driven half coupling 3.
The other end surface of the driving half coupling 1 is coaxial and synchronously connected with a rotor shaft of a motor for driving the elastic coupling system; the other end surface of the driven half coupling 3 is coaxially and synchronously connected with a pump shaft 5 of the deep-well pump. The other end surface of the driving half coupling 1 is coaxially provided with a spline hole, and a rotor shaft of the motor is synchronously connected in the spline hole. The pump shaft 5 of the deep well pump is coaxial with the rotor shaft of the motor, the radial force is greatly reduced, and the occurrence of shaft breakage of the pump shaft 5 or the rotor shaft can be greatly reduced. The elastic part 2 is arranged in the assembling hole, so that the sand and sand can be prevented from entering during working, and the abrasion of the elastic part 2 is reduced. The driving half coupling 1 and the driven half coupling 3 are both cylindrical and have the same diameter.
As shown in fig. 1 and 4, the elastic member 2 is gear-shaped; a plurality of convex teeth are uniformly arranged on the inner side wall of the assembling hole of the driving half coupling 1 at intervals along the circumferential direction; a plurality of convex teeth are uniformly arranged on the inner side wall of the assembling hole of the driven half coupling 3 at intervals along the circumferential direction; the driving coupling part 1 and the driven coupling part 3 are elastically meshed with the elastic part 2 through convex teeth. The convex teeth of the driving half coupling 1 and the convex teeth of the driven half coupling 3 are alternately arranged in the tooth gaps of the elastic part 2 and are fixedly connected with the elastic part 2; the number of the teeth of the driving coupling part 1 is the same as that of the teeth of the driven coupling part 3, and the number of the teeth of the driving coupling part 1 is half of the number of the teeth of the elastic member 2. The teeth of the elastic member 2 may be replaced with different shapes and numbers according to actual load requirements, as shown in fig. 4 (a), (b), and (c). The material of the elastic member 2 is rubber or the like. The elastic piece 2 enables the pump shaft 5 to buffer and damp, reduces the possibility of shaft breakage, reduces the maintenance rate and the maintenance cost, and prolongs the service life of the deep well pump. The thickness of the elastic member 2 is twice the depth of the fitting hole; the diameter of the elastic member 2 is equal to the diameter of the fitting hole.
And the other end surface of the driven half coupling 3 is coaxially provided with a pump shaft hole, and a pump shaft 5 of the deep-well pump is synchronously connected in the pump shaft hole. The elastic coupling system further comprises a connecting piece 4; the outer side wall of the driven half coupling 3 is radially provided with a fixing hole communicated with a pump shaft hole, and the fixing hole is close to the end part of a pump shaft 5 connected in the pump shaft hole; the connecting piece 4 is arranged in the fixed hole, the outer end of the connecting piece 4 does not protrude out of the outer side wall of the driven half-coupling 3, and the inner end of the connecting piece 4 is clamped in the pump shaft 5 in the pump shaft hole. The coupling 4 serves to restrain the end of the pump shaft 5 fixed in the driven coupling half 3.
As shown in fig. 5 (a), (b), and (c), the pump shaft hole is a polygonal hole having the same shape as the axial surface of the pump shaft 5, and each corner of the polygonal hole is a rounded corner. The square holes can be triangular, square or hexagonal according to the shape of the pump shaft 5. The preferred chamfer of the pump shaft 5 reduces stress concentrations and the pump shaft 5 needs to be used integrally with an elastic coupling system.
When the rotor shaft of the motor and the pump shaft 5 of the deep-well pump are synchronously connected through the elastic coupling system, the rotor shaft of the motor rotates around the axis of the motor, the driving half-coupling 1 is driven to rotate through the torque transmitted by the splined hole, the driven half-coupling 3 is driven to rotate around the axis of the motor through the elastic piece 2, and finally the pump shaft 5 of the deep-well pump is driven to rotate around the axis of the deep-well pump and the impeller of the deep-well pump connected with the pump shaft 5 is driven to rotate.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention. In the above embodiments, the present invention may be variously modified and changed. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An elastomeric coupling system for a deep well pump, characterized by:
the transmission mechanism comprises a driving half coupling (1), an elastic piece (2) and a driven half coupling (3), wherein one end face of the driving half coupling (1) is coaxially and fixedly connected with one end face of the driven half coupling (3), the mutually connected end faces of the driving half coupling (1) and the driven half coupling (3) are coaxially provided with the same assembly holes, and the elastic piece (2) is coaxially and hermetically arranged in the assembly holes of the driving half coupling (1) and the driven half coupling (3);
the other end surface of the driving half coupling (1) is coaxially and synchronously connected with a rotor shaft of a motor for driving the elastic coupling system; the other end surface of the driven half coupling (3) is coaxially and synchronously connected with a pump shaft (5) of the deep-well pump.
2. An elastomeric coupling system for a deep well pump according to claim 1, wherein:
the driving half coupling (1) and the driven half coupling (3) are both cylindrical and have the same diameter.
3. An elastomeric coupling system for a deep well pump according to claim 1, wherein:
the elastic piece (2) is in a gear shape; a plurality of convex teeth are uniformly arranged on the inner side wall of the assembling hole of the driving half coupling (1) at intervals along the circumferential direction; a plurality of convex teeth are uniformly arranged on the inner side wall of the assembling hole of the driven half coupling (3) at intervals along the circumferential direction;
the driving half coupling (1) and the driven half coupling (3) are meshed with the elastic piece (2) through convex teeth.
4. An elastomeric coupling system for a deep well pump according to claim 3, wherein:
the convex teeth of the driving half coupling (1) and the convex teeth of the driven half coupling (3) are alternately arranged in the tooth gaps of the elastic part (2) at intervals and are fixedly connected with the elastic part (2);
the number of the convex teeth of the driving half coupling (1) is the same as that of the convex teeth of the driven half coupling (3), and the number of the convex teeth of the driving half coupling (1) is half of that of the elastic pieces (2).
5. An elastomeric coupling system for a deep well pump according to claim 1, wherein:
the elastic piece (2) is made of rubber.
6. An elastomeric coupling system for a deep well pump according to claim 1, wherein:
the thickness of the elastic piece (2) is twice of the depth of the assembly hole; the diameter of the elastic piece (2) is equal to that of the assembly hole.
7. An elastomeric coupling system for a deep well pump according to claim 1, wherein:
and the other end surface of the driving half coupling (1) is coaxially provided with a spline hole, and a rotor shaft of the motor is synchronously connected in the spline hole.
8. An elastomeric coupling system for a deep well pump according to claim 1, wherein:
and the other end surface of the driven half coupling (3) is coaxially provided with a pump shaft hole, and a pump shaft (5) of the deep-well pump is synchronously connected in the pump shaft hole.
9. An elastomeric coupling system for a deep well pump according to claim 8, wherein:
also comprises a connecting piece (4); the outer side wall of the driven half coupling (3) is radially provided with a fixing hole communicated with a pump shaft hole, and the fixing hole is close to the end part of a pump shaft (5) connected in the pump shaft hole;
the connecting piece (4) is arranged in the fixed hole, the outer end of the connecting piece (4) does not protrude out of the outer side wall of the driven half-coupling (3), and the inner end of the connecting piece (4) is clamped into the pump shaft (5) in the pump shaft hole.
10. An elastomeric coupling system for a deep well pump according to claim 8, wherein:
the pump shaft hole is a multi-square hole with the same shape as the shaft surface of the pump shaft (5), and each corner of the multi-square hole is a round angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221117435.0U CN217401484U (en) | 2022-05-10 | 2022-05-10 | Elastic coupling system for deep well pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221117435.0U CN217401484U (en) | 2022-05-10 | 2022-05-10 | Elastic coupling system for deep well pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217401484U true CN217401484U (en) | 2022-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221117435.0U Active CN217401484U (en) | 2022-05-10 | 2022-05-10 | Elastic coupling system for deep well pump |
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| Country | Link |
|---|---|
| CN (1) | CN217401484U (en) |
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2022
- 2022-05-10 CN CN202221117435.0U patent/CN217401484U/en active Active
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