CN210141220U - Hot oil pump impeller shaft end fixing structure - Google Patents

Abstract

The utility model discloses a hot oil pump impeller shaft end fixed knot constructs, establish including pump shaft, cover the nut of the tip of epaxial impeller of pump, threaded connection at the pump shaft, the impeller passes through the key assembly on the pump shaft, the one end swing joint who keeps away from the impeller of nut has the anti-loosening piece, the anti-loosening piece is with the epaxial recess joint of pump spindle connecting portion. The utility model discloses in, at the one end swing joint anti-loosening member of nut, through the cooperation of the inside spring board of nut and the dogtooth on the adapter sleeve, the terminal surface of spring board is used in the side of perpendicular to adapter sleeve outer wall on the dogtooth when the nut reverses, because the limiting displacement of lug and recess, consequently locking piece can only be followed pump shaft axial displacement, consequently the spring board can receive the hindrance of dogtooth, cause the nut can't realize the reversal, the key does not run through impeller and pump shaft junction simultaneously, make the key play spacing effect.

Description

Hot oil pump impeller shaft end fixing structure

Technical Field

The utility model relates to a hot oil pump field specifically is hot oil pump impeller shaft end fixed knot constructs.

Background

The hot oil pump is the equipment of mainly being applied to chemical industry enterprise and oil refining trade, and traditional hot oil pump impeller shaft end is fixed to adopt the cap nut to add axle head jackscrew structure, but this kind of impeller shaft end fixed knot structure's reversal locking ability is relatively weak, causes the axle end cover to form locking nut not hard up, drops easily during the impeller reversal, influences the normal operating of equipment.

For this reason, we propose a thermal oil pump impeller shaft end fixing structure to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hot oil pump impeller shaft end fixed knot constructs to cause the end of shaft cover to form lock nut not hard up, drop easily when solving the impeller reversal of proposition among the above-mentioned background art, influence the problem of equipment normal operating.

In order to achieve the above object, the utility model provides a following technical scheme: hot oil pump impeller shaft end fixed knot constructs, establish including pump shaft, cover the nut of epaxial impeller of pump, threaded connection at the tip of pump shaft, the impeller passes through the key assembly on the pump shaft, the one end swing joint who keeps away from the impeller of nut has the anti-loosening piece, the groove joint on anti-loosening piece and the pump shaft connecting portion.

Preferably, the anti-loosening element is of an annular structure, a convex block is processed on the inner wall of the anti-loosening element, and the convex block is matched with the groove.

Preferably, a connecting sleeve is processed at one end of the anti-loosening member close to the nut, and the end part of the connecting sleeve is rotatably connected with the nut through a bearing.

Preferably, the outer wall of the connecting sleeve is uniformly provided with convex teeth, and the convex teeth are meshed with a spring plate arranged on the inner wall of the nut.

Preferably, one side of each convex tooth is perpendicular to the outer wall of the connecting sleeve, the spring plate is obliquely arranged, and one end face of the spring plate is matched with one side, perpendicular to the outer wall of the connecting sleeve, of each convex tooth.

Preferably, the key is positioned on one side of the impeller nut, and one end of the key extends to the inside of the joint of the impeller and the pump shaft.

Preferably, one end of the nut, which is close to the impeller, is connected with a flange, and a spring washer is arranged between the flange and the impeller.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses in, at the one end swing joint anti-loosening member of nut, through the cooperation of the inside spring board of nut and the dogtooth on the adapter sleeve, the terminal surface of spring board is used in the side of perpendicular to adapter sleeve outer wall on the dogtooth when the nut reverses, because the limiting displacement of lug and recess, consequently locking piece can only be followed pump shaft axial displacement, consequently the spring board can receive the hindrance of dogtooth, cause the nut can't realize the reversal, the key does not run through impeller and pump shaft junction simultaneously, make the key play spacing effect.

Description of the drawings:

in order to more clearly illustrate the embodiments of the present invention 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 invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a perspective view of the present invention;

fig. 2 is a front view of the present invention;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;

FIG. 4 is an enlarged view of a portion of FIG. 3 at B;

fig. 5 is a schematic structural view of the joint between the middle anti-loosening member and the nut of the present invention.

In the figure: 1. a pump shaft; 2. an impeller; 3. a nut; 4. a key; 5. an anti-loosening element; 6. a groove; 7. a bump; 8. connecting sleeves; 9. a bearing; 10. a convex tooth; 11. a spring plate; 12. and (4) a flange.

The specific implementation mode is as follows:

the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides an embodiment: hot oil pump impeller shaft end fixed knot constructs, including pump shaft 1, cover establish impeller 2, the nut 3 of threaded connection at the tip of pump shaft 1 on pump shaft 1, impeller 2 passes through key 4 assembly on pump shaft 1, and the one end swing joint who keeps away from impeller 2 of nut 3 has locking piece 5, locking piece 5 and the 6 joints of recess on the 1 connecting portion of pump shaft.

The anti-loosening element 5 is of an annular structure, a convex block 7 is processed on the inner wall of the anti-loosening element 5, the convex block 7 is matched with a groove 6, a connecting sleeve 8 is processed at one end, close to the nut 3, of the anti-loosening element 5, the end portion of the connecting sleeve 8 is rotatably connected with the nut 3 through a bearing 9, convex teeth 10 are uniformly arranged on the outer wall of the connecting sleeve 8, the convex teeth 10 are meshed with a spring plate 11 installed at the inner wall of the nut 3, one side of each convex tooth 10 is perpendicular to the outer wall of the connecting sleeve 8, the spring plate 11 is obliquely arranged, one end face of each spring plate 11 is matched with one side, perpendicular to the outer wall of the connecting sleeve 8, of each convex tooth 10, after assembly, the nut 3 still achieves locking capacity, but due to the limitation of the convex blocks 7 and the grooves 6, the anti-loosening element 5 can only axially move along the pump shaft 1, when the impeller 2 rotates reversely, the nut 3 rotates towards the loosening direction under the action of rotation, the spring plate 11 at the, the spring plate 11 is blocked so that the nut 3 cannot be reversed.

Key 4 is located the one side of impeller 2 nut 3, and the one end of key 4 extends to the inside of impeller 2 and pump shaft 1 junction, and the one end that nut 3 is close to impeller 2 is connected with flange 12, has placed spring washer between flange 12 and the impeller 2, and key 4 not only plays fixed impeller 2's effect, because key 4 does not run through impeller 2 and pump shaft 1 junction, therefore key 4 also plays spacing effect.

The working principle is as follows: when the impeller 2 rotates reversely, the nut 3 rotates along with the pump shaft 1 and rotates reversely, the nut 3 should rotate towards the loosening direction, the anti-loosening piece 5 can only move axially along the pump shaft 1 due to the limitation of the convex block 7 and the groove 6, when the nut 3 rotates towards the loosening direction, the spring plate 11 on the inner wall of the nut 3 moves relative to the convex teeth 10 along with the rotation of the nut 3, the end face of the spring plate 11 acts on the side face, perpendicular to the outer wall of the connecting sleeve 8, of the convex teeth 10, and the anti-loosening piece 5 can only move axially along the pump shaft 1, so that the spring plate 11 is blocked by the convex teeth 10, the nut 3 cannot rotate reversely, and the anti-loosening is achieved.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (7)

1. Hot oil pump impeller axle head fixed knot constructs, establish including pump shaft (1), cover impeller (2), threaded connection on pump shaft (1) nut (3) at the tip of pump shaft (1), impeller (2) assemble on pump shaft (1) through key (4), its characterized in that, the one end swing joint who keeps away from impeller (2) of nut (3) has anti-loose piece (5), recess (6) joint on anti-loose piece (5) and pump shaft (1) connecting portion.

2. The hot oil pump impeller shaft end fixing structure according to claim 1, characterized in that the anti-loosening element (5) is of an annular structure, and a projection (7) is machined on the inner wall of the anti-loosening element (5), and the projection (7) is matched with the groove (6).

3. The fixed structure of the shaft end of the impeller of the hot oil pump as claimed in claim 2, characterized in that a connecting sleeve (8) is processed at one end of the anti-loosening element (5) close to the nut (3), and the end part of the connecting sleeve (8) is rotatably connected with the nut (3) through a bearing (9).

4. The fixed structure of the shaft end of the impeller of the hot oil pump as claimed in claim 3, characterized in that the outer wall of the connecting sleeve (8) is uniformly provided with convex teeth (10), and the convex teeth (10) are engaged with a spring plate (11) arranged at the inner wall of the nut (3).

5. The fixed structure of the shaft end of the impeller of the hot oil pump as set forth in claim 4, wherein one side of the protruding tooth (10) is perpendicular to the outer wall of the connecting sleeve (8), the spring plate (11) is arranged obliquely, and one end surface of the spring plate (11) is engaged with one side of the protruding tooth (10) which is perpendicular to the outer wall of the connecting sleeve (8).

6. The hot oil pump impeller shaft end fixing structure according to claim 1, characterized in that the key (4) is located at one side of the nut (3) of the impeller (2), and one end of the key (4) extends to the inside of the joint of the impeller (2) and the pump shaft (1).

7. The hot oil pump impeller shaft end fixing structure according to claim 1, characterized in that a flange (12) is connected to one end of the nut (3) close to the impeller (2), and a spring washer is placed between the flange (12) and the impeller (2).

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