CN216922584U - Impeller over-rotation balance combined mandrel and pump equipment - Google Patents
Impeller over-rotation balance combined mandrel and pump equipment Download PDFInfo
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- CN216922584U CN216922584U CN202123317229.2U CN202123317229U CN216922584U CN 216922584 U CN216922584 U CN 216922584U CN 202123317229 U CN202123317229 U CN 202123317229U CN 216922584 U CN216922584 U CN 216922584U
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Abstract
The utility model discloses an impeller over-rotation balance combined mandrel, which comprises: the mandrel comprises a mandrel body, a first limiting part and a second limiting part; the mandrel body is provided with a first connecting surface and a second connecting surface, the first connecting surface is used for being in transition fit connection with an inner hole of the impeller, and the first limiting part is connected with the first end surface of the impeller after being connected with the second connecting surface; the second limiting part and the first limiting part are oppositely arranged on two sides of the first connecting surface and connected with the end part of the first connecting surface; the second end face of the impeller is abutted against the second limiting part and then connected with the second limiting part. According to the utility model, on the basis of transition fit connection between the mandrel body and the inner hole of the impeller, the first limiting part and the second limiting part are connected to two ends of the mandrel body after the mandrel body and the inner hole of the impeller are assembled, so that relative rotation or axial movement between the mandrel body and the inner hole of the impeller is limited, on the premise of meeting the assembly process of the mandrel body and the inner hole of the impeller, the machining process and the installation process of the mandrel body are simplified, and the working efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of compressors, in particular to an impeller over-rotation balance combined mandrel and pump equipment.
Background
The taper of an inner hole of an existing impeller is usually 1:50, the over-rotation speed of the impeller can reach 40000r/min, and in the process of assembling a compressor, in order to meet the precision requirement of impeller balance and the assembling requirement of an impeller over-rotation test, the inner hole of the impeller and a combined mandrel need to be assembled in an interference fit mode, namely the aperture of the inner hole of the impeller is smaller than the diameter of the mandrel.
The assembly requirement needs to adopt a hydraulic assembly and disassembly tool to assemble and disassemble the impeller and the combined mandrel, so that an oil hole and an oil line need to be arranged on the combined mandrel, a high-pressure oil pump and a low-pressure oil pump are connected in the assembly and disassembly tool, and the high-pressure oil pump starts to work after the impeller and the combined mandrel are initially assembled. The inner hole of the impeller is expanded by utilizing the action of high-pressure oil, after a certain gap is formed between the inner hole of the impeller and the combined mandrel, the low-pressure oil pump is started, the low-pressure oil pump pushes a sliding device in the disassembling tool, and the sliding device drives the impeller to slide forwards, so that the interference fit of the impeller and the combined mandrel is realized.
The assembling method leads to complex machining procedures of the combined mandrel, complicated installation processes of the impeller and the combined mandrel, additional hydraulic dismounting devices such as a high-pressure pump and a low-pressure pump are needed, the cost is increased, and the production efficiency is low.
SUMMERY OF THE UTILITY MODEL
In view of the above, the utility model provides an impeller over-rotation balance combined mandrel and pump equipment, which simplify the machining process and the installation process of the mandrel body and improve the working efficiency on the premise of meeting the installation process of the mandrel body and the inner hole of the impeller.
Specifically, the method comprises the following technical scheme:
in a first aspect, an embodiment of the present invention provides an impeller over-rotation balancing combined spindle, including: the mandrel comprises a mandrel body, a first limiting part and a second limiting part;
the mandrel body is provided with a first connecting surface and a second connecting surface, the first connecting surface is used for being in transition fit connection with an inner hole of the impeller, and the first limiting part is connected with the first end surface of the impeller after being connected with the second connecting surface;
the second limiting part and the first limiting part are oppositely arranged on two sides of the first connecting surface and are connected with the end part of the first connecting surface;
the second end face of the impeller is abutted against the second limiting part and then is connected with the second limiting part.
Optionally, the first limiting part is provided with a first threaded hole, the second connecting surface is a threaded matching surface, and the first threaded hole is matched with the threaded matching surface;
the first limiting portion is detachably connected with the second connecting surface through the first threaded hole and then is connected with the first end face of the impeller.
Optionally, the first limiting part is further provided with second threaded holes, and the second threaded holes are distributed around the first threaded holes along the radial direction of the first limiting part;
a third threaded hole corresponding to the second threaded hole is formed in the first end face of the impeller;
a first screw is attached in the second and third threaded holes.
Optionally, a gasket is arranged between the first limiting portion and the first end face of the impeller, and the first screw is connected with the first end face of the impeller through the gasket.
Optionally, the second limiting part is a boss, and the boss and the first mating surface are integrally formed; and the second end surface of the impeller is abutted against the boss and then is connected with the boss.
Optionally, the number of the second threaded holes is multiple, and the multiple second threaded holes are uniformly distributed around the first threaded hole along the radial direction of the first limiting portion.
Optionally, a fourth threaded hole is arranged on the boss, and the fourth threaded holes are distributed along the radial direction of the boss;
a fifth threaded hole corresponding to the fourth threaded hole is formed in the second end face of the impeller;
and the second screw is connected in the fourth threaded hole and the fifth threaded hole.
Optionally, the number of the fourth threaded holes is multiple, and the multiple fourth threaded holes are close to the edge of the boss and are uniformly distributed along the radial direction of the boss.
Optionally, the outer contour of the boss is a discontinuous circumferential shape, and the fourth threaded hole is disposed near an edge of the discontinuous circumferential shape.
In a second aspect, embodiments of the present invention provide a pump apparatus comprising an impeller over-rotation balancing combination spindle as described above.
The technical scheme provided by the embodiment of the utility model has the beneficial effects that at least:
the utility model arranges a first matching surface and a second matching surface on the mandrel body, the first matching surface is used for transitionally matching and connecting with the inner hole of the impeller, the first spacing part is connected with the first end surface of the impeller after matching and connecting with the second matching surface, the second spacing part and the first spacing part are arranged at two sides of the first matching surface and connected with the second end surface of the impeller oppositely, on the basis of the transition fit assembly of the mandrel body and the inner hole of the impeller, the first limiting part and the second limiting part are arranged at the two ends after the assembly and are used for fixing the relative position of the mandrel body and the inner hole of the impeller after the assembly, so that the relative rotation or the axial movement between the mandrel body and the inner hole of the impeller is avoided, and the process effect of the interference fit connection is achieved, the assembling process of the mandrel body and the inner hole of the impeller is met, the machining process and the assembling process of the mandrel body are simplified, the production efficiency is improved, and the manufacturing cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural view of an impeller over-rotation balance combined spindle and an impeller inner hole in matched connection according to an embodiment of the utility model.
Fig. 2 is a partially enlarged schematic view of the connection between the first limiting portion and the second limiting portion in fig. 1 and the inner hole of the impeller.
Fig. 3 is a schematic structural view of a mandrel body according to an embodiment of the present invention.
Fig. 4 is a partially enlarged schematic view of the second position-limiting portion in fig. 3.
Fig. 5 is a schematic structural diagram of a first limiting portion according to an embodiment of the utility model.
The reference numerals in the figures are denoted respectively by:
1-a mandrel body; 11-a first mating face; 12-a second mating face; 2-a first limiting part; 21-a first threaded hole; 22-a second threaded hole; 23-anti-loose connecting holes; 3-a second limiting part; 31-a fourth threaded hole; 4-impeller inner hole; 5-the first end face of the impeller; 51-a third threaded hole; 6-the second end face of the impeller; 61-a fifth threaded hole; 7-a first screw; 8-a second screw; 9-a gasket.
With the above figures, certain embodiments of the utility model have been illustrated and described in more detail below. The drawings and the description are not intended to limit the scope of the inventive concept in any way, but rather to illustrate it by those skilled in the art with reference to specific embodiments.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the technical solutions and advantages of the present invention clearer, the following will describe embodiments of the present invention in further detail with reference to the accompanying drawings.
Unless otherwise defined, technical or scientific terms used herein shall have the meaning understood by those of ordinary skill in the art to which the utility model belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.
To facilitate an understanding of the present invention, the general structure of an impeller over-rotation balancing combination spindle and pump apparatus and its application are described herein by way of example.
Fig. 1 is a schematic structural view of a matching connection between an impeller over-rotation balance combined spindle and an impeller inner hole according to an embodiment of the present invention, fig. 2 is a partially enlarged schematic view of a connection between a first limiting portion and a second limiting portion in fig. 1 and the impeller inner hole, fig. 3 is a schematic structural view of a spindle body according to an embodiment of the present invention, fig. 4 is a partially enlarged schematic view of the second limiting portion in fig. 3, and fig. 5 is a schematic structural view of the first limiting portion according to an embodiment of the present invention.
As shown in fig. 1 and fig. 2, the impeller over-rotation balancing combination spindle according to the embodiment of the present invention includes: the mandrel comprises a mandrel body 1, a first limiting part 2 and a second limiting part 3; the mandrel body 1 is provided with a first connecting surface 11 and a second connecting surface 12, the first connecting surface 11 is used for being in transition fit connection with the inner hole 4 of the impeller, and the first limiting part 2 is connected with the first end surface 5 of the impeller after being connected with the second connecting surface 12; the second limiting part 3 and the first limiting part 2 are oppositely arranged at two sides of the first connecting surface 11 and connected with the end part of the first connecting surface 11; the second end surface 6 of the impeller is abutted against the second limiting part 3 and then is connected with the second limiting part 3.
The utility model arranges a first matching surface and a second matching surface on the mandrel body, the first matching surface is used for transitionally matching and connecting with the inner hole of the impeller, the first spacing part is connected with the first end surface of the impeller after matching and connecting with the second matching surface, the second spacing part and the first spacing part are arranged at two sides of the first matching surface and connected with the second end surface of the impeller oppositely, on the basis of the transition fit assembly of the mandrel body and the inner hole of the impeller, the first limiting part and the second limiting part are arranged at the two ends after the assembly and are used for fixing the relative position of the mandrel body and the inner hole of the impeller after the assembly, so that the relative rotation or the axial movement between the mandrel body and the inner hole of the impeller is avoided, and the process effect of the interference fit connection is achieved, the assembling process of the mandrel body and the inner hole of the impeller is met, the machining process and the assembling process of the mandrel body are simplified, the production efficiency is improved, and the manufacturing cost is reduced.
As shown in fig. 1, 2 and 5, the first position-limiting portion 2 is provided with a first threaded hole 21, the second matching surface 12 is a threaded matching surface, and the first threaded hole 21 is matched with the threaded matching surface; the first limiting part 2 is detachably connected with the second matching surface 12 through a first threaded hole 21 and then is connected with the first end surface 5 of the impeller.
Because the impeller inner hole 4 is a tapered inner hole, the first matching surface 11 is also a tapered surface, and when the spindle body 1 and the impeller inner hole 4 are in transition fit connection, the large end surface of the impeller inner hole 4 needs to be aligned with the small end surface of the first matching surface 11 for assembly, so that the outer diameter of the second matching surface 12 needs to be smaller than the outer diameter of the first matching surface 11. Then the first limiting part 2 and the second matching surface 12 are locked in advance, the first limiting part 2 props against the first end surface 5 of the impeller to limit the position of the impeller relative to the mandrel body 1 after assembly to be unchanged, then the impeller is connected with the first end surface 5 of the impeller, and finally the first threaded hole 21 and the second matching surface 12 are locked. The relative position between the first end surface 5 of the impeller and the mandrel body 1 is firmly limited, and the mandrel body 1 and the inner hole 4 of the impeller are prevented from relative rotation or axial movement.
As shown in fig. 1, 2 and 5, the first position-limiting part 2 is further provided with second threaded holes 22, and the second threaded holes 22 are distributed around the first threaded hole 21 along the radial direction of the first position-limiting part 2; the first end face 5 of the impeller is provided with a third threaded hole 51 corresponding to the second threaded hole 22; the first screw 7 is attached to the second screw hole 22 and the third screw hole 51.
The second threaded hole 22 is formed in the radial direction of the first limiting portion 2, the second threaded hole 22 is connected with the third threaded hole 51, the position of the first end face 5 of the assembled impeller is limited in the radial direction, the radial position between the mandrel body 1 and the inner hole 4 of the impeller is guaranteed to be unchanged, and rotation cannot occur.
By using the first screw 7 inserted into the second threaded hole 22 and the third threaded hole 51, the friction diameter of the first screw 7 is small, and a high preload can be achieved with a relatively small torque. Therefore, the first screw 7 generates strong jacking force to the first end face 5 of the impeller in the axial direction, and generates strong clamping force together with the first threaded hole 21, when the impeller inner hole 4 rotates at high speed along with the mandrel body 1, the impeller inner hole 4 and the mandrel body 1 can not rotate relatively or move axially, and the interference fit effect is achieved.
And first spacing portion 2 and dabber body 1 and the first terminal surface 5 of impeller between all can dismantle the connection, and is quick, convenient when installation or dismantlement, has improved production efficiency.
As shown in fig. 2, a gasket is disposed between the first limiting portion 2 and the first end surface 5 of the impeller, and the first screw 7 is connected to the first end surface 5 of the impeller through the gasket.
A gasket 9 is arranged between the first limiting part 2 and the first end face 5 of the impeller, threaded holes corresponding to the second threaded hole 22 and the third threaded hole 51 are arranged on the gasket 9, and the first screw 7 is connected with the first end face 5 of the impeller through the gasket 9. Make first screw 7 directly act on gasket 9 to the top thrust that impeller first terminal surface 5 produced, play the effect of transmission thrust, can protect impeller first terminal surface 5, make the fastening more of being connected between first spacing portion 2 and the impeller first terminal surface 5 simultaneously.
As shown in fig. 2 and 3, the second position-limiting portion 3 is a boss integrally formed with the first mating surface 11; the second end surface 6 of the impeller is connected with the boss after abutting against the boss.
The boss is directly machined at the end part of the first matching surface 11 on the mandrel body 1, so that the first matching surface 11 and the inner hole 4 of the impeller can be positioned when being assembled, and the assembling process is simplified. And the second end surface 6 of the impeller is connected with the boss, so that the spindle body 1 and the inner hole 4 of the impeller can be ensured not to rotate in the radial direction after being assembled.
The second limiting part 3 and the mandrel body 1 are of an integral structure, so that the connection strength of the second limiting part 3 and the second end face 6 of the impeller can be increased, and the radial displacement between the mandrel body 1 and the inner hole 4 of the impeller can be better limited.
The second limiting part 3 may also be an annular member, and the annular member is welded to the end of the first mating surface 11 by a welding process, and then the second limiting part 3 is connected and fixed with the second end surface 6 of the impeller, and the positioning and limiting functions can also be achieved, so that the specific structure of the first mating surface 11 is not limited.
As shown in fig. 5, the number of the second threaded holes 22 is plural, and the plural second threaded holes 22 are uniformly distributed around the first threaded hole 21 in the radial direction along the first stopper portion 2.
Set up a plurality of evenly distributed's tie point between first spacing portion 2 and the first terminal surface 5 of impeller, can be so that the first spacing portion 2 of effort evenly distributed between dabber body 1 and the impeller hole 4, prolong its duty cycle, take place to rotate between better restriction dabber body 1 and the impeller hole 4 simultaneously.
As shown in fig. 5, the anti-loosening connecting hole 23 is formed along the circumferential direction of the outer wall of the first threaded hole 21, and the anti-loosening connecting hole 23 is in threaded connection with the spindle body 1, so that the relative rotation between the impeller inner hole 4 and the spindle body 1 is further prevented when the impeller inner hole 4 rotates at a high speed along with the spindle body 1.
As shown in fig. 2 to 4, the boss is provided with fourth threaded holes 31, and the fourth threaded holes 31 are distributed along the radial direction of the boss; a fifth threaded hole 61 corresponding to the fourth threaded hole 31 is formed in the second impeller end surface 6; the second screw 8 is connected to the fourth screw hole 31 and the fifth screw hole 61.
Through set up detachable radial connecting point between spacing portion 3 of second and impeller second terminal surface 6, inject the radial position between dabber body 1 and the impeller second terminal surface 6, take place dismantlement, simple to operate when rotating each other preventing.
As shown in fig. 2 to 4, the number of the fourth threaded holes 31 is plural, and the plural fourth threaded holes 31 are close to the edge of the boss and are uniformly distributed along the radial direction of the boss.
A plurality of uniformly distributed connection points are arranged between the second limiting part 3 and the second end face 6 of the impeller, so that the torque between the mandrel body 1 and the inner hole 4 of the impeller is uniform, the second limiting part is used, and the working period of the mandrel body is prolonged.
As shown in fig. 4, the outer contour of the boss is a discontinuous circumferential shape, and the fourth screw hole 31 is disposed near the edge of the discontinuous circumferential shape.
In the embodiment provided by the utility model, the boss is in a blade shape, the top ends of the four blades are on the same circumference, and the discontinuous circumferential shape of the boss can reduce the dead weight of the mandrel body on the premise of not influencing positioning and limiting so as to meet the capacity of over-rotation equipment.
The embodiment of the utility model provides pump equipment, which comprises the impeller over-rotation balance combined mandrel according to the embodiment, and the impeller over-rotation balance combined mandrel according to the embodiment of the utility model has the technical effects, so that the pump equipment also has corresponding technical effects, namely the pump equipment is provided with the mandrel body 1, the first limiting part 2 and the second limiting part 3; the mandrel body 1 is provided with a first connecting surface 11 and a second connecting surface 12, the first connecting surface 11 is used for being in transition fit connection with the inner hole 4 of the impeller, and the first limiting part 2 is connected with the first end surface 5 of the impeller after being connected with the second connecting surface 12; the second limiting part 3 and the first limiting part 2 are oppositely arranged at two sides of the first connecting surface 11 and connected with the end part of the first connecting surface 11; the second end surface 6 of the impeller is abutted against the second limiting part 3 and then is connected with the second limiting part 3. On the basis of transition fit assembly of the mandrel body and the inner hole of the impeller, the first limiting part and the second limiting part are arranged at two ends of the assembled mandrel body and are used for fixing the relative position of the mandrel body and the inner hole of the impeller after assembly, so that relative rotation or axial movement between the mandrel body and the inner hole of the impeller is avoided, the process effect of interference fit connection is achieved, the machining process and the assembly process of the mandrel body are simplified while the assembly process of the mandrel body and the inner hole of the impeller is met, the production efficiency is improved, and the manufacturing cost is reduced.
Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides an impeller excess rotation balanced combination dabber which characterized in that includes: the mandrel comprises a mandrel body (1), a first limiting part (2) and a second limiting part (3);
the mandrel body (1) is provided with a first connecting surface (11) and a second connecting surface (12), the first connecting surface (11) is used for being in transition fit connection with an inner hole (4) of the impeller, and the first limiting part (2) is connected with the first end surface (5) of the impeller after being connected with the second connecting surface (12);
the second limiting part (3) and the first limiting part (2) are oppositely arranged on two sides of the first connecting surface (11) and connected with the end part of the first connecting surface (11);
the second end surface (6) of the impeller is abutted against the second limiting part (3) and then is connected with the second limiting part (3).
2. The impeller over-rotation balance combined mandrel as claimed in claim 1, wherein the first limiting portion (2) is provided with a first threaded hole (21), the second connecting surface (12) is a threaded matching surface, and the first threaded hole (21) is matched with the threaded matching surface;
the first limiting part (2) is detachably connected with the second connecting surface (12) through the first threaded hole (21) and then is connected with the first end surface (5) of the impeller.
3. The impeller over-rotation balance combined mandrel as claimed in claim 2, wherein the first limiting part (2) is further provided with second threaded holes (22), and the second threaded holes (22) are distributed around the first threaded holes (21) along the radial direction of the first limiting part (2);
a third threaded hole (51) corresponding to the second threaded hole (22) is formed in the first end surface (5) of the impeller;
a first screw (7) is attached to the second threaded hole (22) and the third threaded hole (51).
4. The impeller over-rotation balance combined mandrel as claimed in claim 3, wherein a gasket (9) is arranged between the first limiting part (2) and the first end surface (5) of the impeller, and the first screw (7) is connected with the first end surface (5) of the impeller through the gasket (9).
5. The impeller over-rotation balance combined spindle according to claim 1, wherein the second limiting portion (3) is a boss integrally formed with the first connection surface (11); and the second end surface (6) of the impeller is connected with the boss after abutting against the boss.
6. The impeller over-rotation balance combined mandrel as claimed in claim 3, wherein the number of the second threaded holes (22) is multiple, and the second threaded holes (22) are uniformly distributed around the first threaded hole (21) along the radial direction of the first limiting part (2).
7. The impeller over-rotation balance combined mandrel as claimed in claim 5, wherein a fourth threaded hole (31) is arranged on the boss, and the fourth threaded holes (31) are distributed along the radial direction of the boss;
a fifth threaded hole (61) corresponding to the fourth threaded hole (31) is formed in the second impeller end face (6);
the second screw (8) is connected to the fourth threaded hole (31) and the fifth threaded hole (61).
8. The impeller over-rotation balancing combination spindle as claimed in claim 7, wherein the number of the fourth threaded holes (31) is multiple, and the multiple fourth threaded holes (31) are close to the edge of the boss and evenly distributed along the radial direction of the boss.
9. The impeller over-rotation balancing combination spindle as claimed in claim 7, wherein the outer contour of the boss is a discontinuous circumferential shape, and the fourth threaded hole (31) is provided near the edge of the discontinuous circumferential shape.
10. A pump apparatus comprising an impeller over-rotation balancing combination spindle as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123317229.2U CN216922584U (en) | 2021-12-27 | 2021-12-27 | Impeller over-rotation balance combined mandrel and pump equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123317229.2U CN216922584U (en) | 2021-12-27 | 2021-12-27 | Impeller over-rotation balance combined mandrel and pump equipment |
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| Publication Number | Publication Date |
|---|---|
| CN216922584U true CN216922584U (en) | 2022-07-08 |
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|---|---|---|---|
| CN202123317229.2U Active CN216922584U (en) | 2021-12-27 | 2021-12-27 | Impeller over-rotation balance combined mandrel and pump equipment |
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| Country | Link |
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| CN (1) | CN216922584U (en) |
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2021
- 2021-12-27 CN CN202123317229.2U patent/CN216922584U/en active Active
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