CN210531381U - Novel impeller lock nut and impeller shaft end locking anti-loosening structure - Google Patents
Novel impeller lock nut and impeller shaft end locking anti-loosening structure Download PDFInfo
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- CN210531381U CN210531381U CN201921504070.5U CN201921504070U CN210531381U CN 210531381 U CN210531381 U CN 210531381U CN 201921504070 U CN201921504070 U CN 201921504070U CN 210531381 U CN210531381 U CN 210531381U
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- impeller
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Abstract
The utility model discloses a novel impeller locking nut, which comprises a nut cover, a first screw hole and an inner taper hole, wherein the first screw hole and the inner taper hole are coaxial; the screw sleeve is provided with an outer cone matched with the inner taper hole, a clamping part and a second threaded hole, and the axial centers of the outer cone and the second threaded hole have an eccentric amount e. Meanwhile, the utility model also discloses an impeller shaft end locking and anti-loosening structure, which comprises an impeller; the end part of the pump shaft is provided with an installation step and penetrates through the middle part of the impeller; the novel impeller locking nut is in threaded connection with the pump shaft and compresses the impeller. The utility model provides a novel locking of impeller lock nut and impeller shaft end is prevented pine structure decomposes lock nut into nut lid and swivel nut, and nut lid and swivel nut make the screw thread clearance eliminate because of the conical surface cooperation of little offset e, and trace disalignment phenomenon appears in the screw-thread fit to realize the locking purpose.
Description
Technical Field
The utility model relates to the technical field of pumps, especially, relate to a novel impeller lock nut and impeller shaft end locking anti-loosening structure.
Background
The fastening of the impeller by means of the screw thread between the impeller nut and the pump shaft and the locking washer is a common form of pump construction. However, the space of the impeller suction inlet is limited, and it is very difficult to operate the locking gasket after the impeller nut is screwed down, or the locking purpose cannot be achieved, so that the situation that the impeller nut is loosened and falls off in operation and the impeller and the pump body are collided and damaged occurs sometimes.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome the problem that prior art exists, provide a novel impeller lock nut and impeller shaft end locking structure of preventing loosing, decompose lock nut into nut lid and swivel nut, nut lid and swivel nut make the screw thread clearance eliminate because of the conical surface cooperation of little offset e, and trace disalignment phenomenon appears in the screw-thread fit to realize the locking purpose.
The utility model adopts the technical proposal that:
a novel impeller locking nut comprises
A nut cap having a first threaded bore and an inner tapered bore, the first threaded bore and inner tapered bore being coaxial;
the screw sleeve is provided with an outer cone matched with the inner taper hole, a clamping part and a second threaded hole, and the axial centers of the outer cone and the second threaded hole have an eccentric amount e.
Further, the eccentricity e < 0.2.
Further, a sealing ring is arranged between the end face of the opening end of the nut cover and the clamping part.
Furthermore, an annular groove is formed in the end face of the opening end of the nut cover, and the sealing ring is arranged in the annular groove.
Further, the nut cover and the holding portion have a hexagonal shape.
The locking and anti-loosening structure for the shaft end of the impeller comprises
An impeller;
the end part of the pump shaft is provided with an installation step and penetrates through the middle part of the impeller;
the novel impeller locking nut is in threaded connection with the pump shaft and compresses the impeller.
Further, a sealing gasket is arranged between the screw sleeve and the impeller.
The utility model has the advantages that:
the utility model discloses a solve the problem that impeller nut can not lock the impeller among the prior art, designed a novel impeller lock nut, constitute by nut lid and swivel nut etc. lock nut is used for impeller and pump shaft equipment simultaneously from this, obtains impeller axle head locking and prevents loose structure. A nut cap having a first threaded bore and an inner tapered bore, the first threaded bore and inner tapered bore being coaxial. The screw sleeve is provided with an outer cone matched with the inner taper hole, a clamping part and a second threaded hole, and the axial centers of the outer cone and the second threaded hole have an eccentric amount e. When the nut cover is assembled, the nut cover and the threaded sleeve are combined for use, the outer cone extends into the inner taper hole, the end face of the opening end of the nut cover props against the clamping part, and the sealing ring is arranged between the annular groove and the clamping part to realize the sealing of the nut cover and the threaded sleeve. When the nut cover and the threaded sleeve are coaxially fastened with the pump shaft thread, the nut cover and the threaded sleeve are matched with each other due to the conical surface with small offset e, so that the thread clearance is eliminated, and the phenomenon of micro-misalignment occurs in thread matching, thereby realizing the locking purpose.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural view of a nut cover in embodiment 1 of the present invention.
Fig. 2 is a schematic structural view of the screw sleeve according to embodiment 1 of the present invention.
Fig. 3 is a left side view of the screw sleeve according to embodiment 1 of the present invention.
Fig. 4 is a schematic view of a combined structure of the nut cap and the thread insert in embodiment 1 of the present invention.
Fig. 5 is a schematic structural view of an impeller shaft end locking and anti-loosening structure in embodiment 2 of the present invention.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention.
Embodiments of the present invention/utility model will be described in detail below with reference to the drawings.
Example 1
A novel impeller locking nut is shown in attached figures 1-4 and comprises a nut cover 1, a thread sleeve 2 and a sealing ring 3.
The nut cover 1 has a hexagonal outer shape on the outside thereof and has a first threaded hole 11 and an inner tapered hole 12 on the inside thereof. The first threaded hole 11 and the inner tapered hole 12 maintain the coaxiality. An annular groove 13 is arranged on the end surface of one end of the nut cover 1.
The screw sleeve 2 has an outer cone 21 matching the inner tapered hole 12 and a hexagonal holder 22 having a second threaded hole 23 therein. The outer cone 21 and the second threaded hole 23 are not concentric with an eccentricity e. Preferably, the eccentricity e < 0.2.
When the nut cover 1 and the threaded sleeve 2 are assembled, the outer cone 21 extends into the inner taper hole 12, the end face of the open end of the nut cover 1 abuts against the clamping part 22, and the sealing ring 3 is arranged between the annular groove 13 and the clamping part 22 to realize the sealing of the nut cover 1 and the threaded sleeve 2. The hexagonal configuration of the nut cover 1 and the retaining portion 22 facilitates operation in a narrow space.
Example 2
The locking and anti-loosening structure for the shaft end of the impeller comprises an impeller 4, a pump shaft 5, a sealing gasket 6 and a locking nut, and is shown in the attached figure 5.
The locking nut comprises a nut cover 1, a thread sleeve 2 and a sealing ring 3. The nut cover 1 has a hexagonal outer shape on the outside thereof and has a first threaded hole 11 and an inner tapered hole 12 on the inside thereof. The first threaded hole 11 and the inner tapered hole 12 maintain the coaxiality. An annular groove 13 is arranged on the end surface of one end of the nut cover 1. The screw sleeve 2 has an outer cone 21 matching the inner tapered hole 12 and a hexagonal holder 22 having a second threaded hole 23 therein. The outer cone 21 and the second threaded hole 23 are not concentric with an eccentricity e. Preferably, the eccentricity e < 0.2.
The shaft 5 has a mounting step at its end and threads that mate with the first and second threaded holes 11 and 23. The end of the shaft 5 passes through the impeller 4 and the seal 6 in this order and is screwed with a lock nut so that the impeller 4 is fixed. When the nut cover 1 and the threaded sleeve 2 are coaxially fastened with the pump shaft 5, the nut cover 1 and the threaded sleeve 2 are matched with each other through the conical surface with small offset e, so that the thread clearance is eliminated, and the phenomenon of micro-misalignment occurs in thread matching, thereby realizing the locking purpose.
Claims (7)
1. The utility model provides a novel impeller lock nut which characterized in that: comprises that
A nut cap having a first threaded bore and an inner tapered bore, the first threaded bore and inner tapered bore being coaxial;
the screw sleeve is provided with an outer cone matched with the inner taper hole, a clamping part and a second threaded hole, and the axial centers of the outer cone and the second threaded hole have an eccentric amount e.
2. The novel impeller lock nut of claim 1, characterized in that: the eccentricity e < 0.2.
3. The novel impeller lock nut of claim 1, characterized in that: and a sealing ring is arranged between the end surface of the opening end of the nut cover and the clamping part.
4. The novel impeller lock nut of claim 3, characterized in that: the nut cover is characterized in that an annular groove is formed in the end face of the opening end of the nut cover, and the sealing ring is arranged in the annular groove.
5. The novel impeller lock nut of claim 1, characterized in that: the nut cover and the clamping part have a hexagonal shape.
6. The locking and anti-loosening structure for the shaft end of the impeller comprises
An impeller;
the end part of the pump shaft is provided with an installation step and penetrates through the middle part of the impeller;
the method is characterized in that:
the novel impeller locking nut of any one of claims 1-5 is further included, is in threaded connection with the pump shaft, and compresses an impeller.
7. The impeller shaft end locking anti-loosening structure of claim 6, wherein: and a sealing gasket is arranged between the threaded sleeve and the impeller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921504070.5U CN210531381U (en) | 2019-09-10 | 2019-09-10 | Novel impeller lock nut and impeller shaft end locking anti-loosening structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921504070.5U CN210531381U (en) | 2019-09-10 | 2019-09-10 | Novel impeller lock nut and impeller shaft end locking anti-loosening structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210531381U true CN210531381U (en) | 2020-05-15 |
Family
ID=70604894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921504070.5U Active CN210531381U (en) | 2019-09-10 | 2019-09-10 | Novel impeller lock nut and impeller shaft end locking anti-loosening structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210531381U (en) |
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2019
- 2019-09-10 CN CN201921504070.5U patent/CN210531381U/en active Active
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