CN201891651U

CN201891651U - Novel impeller nut locking structure

Info

Publication number: CN201891651U
Application number: CN 201020598954
Authority: CN
Inventors: 谢芳; 张贺; 禹泽龙; 王业春
Original assignee: Shanghai Bangpu Industrial Group Co Ltd
Current assignee: Shanghai Bangpu Industrial Group Co Ltd
Priority date: 2010-11-10
Filing date: 2010-11-10
Publication date: 2011-07-06
Anticipated expiration: 2020-11-10

Abstract

The utility model relates to a novel impeller nut locking structure, which comprises a shaft, an impeller which is sleeved on the shaft, an impeller nut and a stop washer, and is characterized in that: a groove is arranged on the outer side surface of the impeller nut to be close to the impeller, a groove is arranged on a shaft hole of the impeller to be close to the impeller nut, the stop washer is arranged between the impeller nut and the impeller, an inner stop pin of the stop washer is snapped into the groove on the impeller nut, and an outer stop pin of the stop washer is snapped into the groove on the shaft hole of the impeller. The utility model has the advantages that: the novel impeller nut locking structure has a simple structure and a low cost, is convenient to process, effectively prevents the loosing situation of the impeller nut, and facilitates the safe and reliable running of a pump.

Description

A kind of novel impeller nut anti-looseness structure

Technical field

The utility model relates to a kind of anti-loose structure, particularly a kind of novel impeller nut anti-looseness structure.

Background technique

Pump is mainly used to carry liquid to comprise water, oil, acid ﹠ alkali liquid, emulsified liquid, suspended emulsion and liquid metal etc., the also liquid that can carry liquid, gaseous mixture and contain suspended solids, and it is self-evident in industrial effect.Fig. 1 is a kind of single-stage cantilever type centrifugal pump, and centrifugal pump is fixed to axle on 1 by impeller nut with impeller 2, ZA series chemical process pump for example, IS series centrifugal pump etc.With ZA series chemical process pump is example, and domestic and international nearly all producer all prevents that by steel-wire screw-socket 3 impeller nut 4 is loosening.Steel-wire screw-socket 1 price height is not only processed impeller nut 4 and must be used specialized tool, and processed complex, and required precision is also quite high.At present, have some producers to be reluctant infusion of financial resources not increase any locking device on impeller nut, this just causes impeller nut that loosening phenomenon often takes place.The staff must take the pump housing apart and keep in repair, and it is tightened the back continue to use, and also can cause the damage of pump when serious, even directly scrap, and reduces the working life of pump greatly.In view of the foregoing, demand developing that a kind of cost is low, novel impeller nut anti-looseness structure urgently, to satisfy the demand that people improve constantly.

Summary of the invention

The purpose of this utility model has provided a kind of novel impeller nut anti-loose structure, has solved the deficiencies in the prior art.

The purpose of this utility model is achieved in that a kind of novel impeller nut anti-looseness structure, comprise: axle, be set in impeller, impeller nut and lock washer on the axle, it is characterized in that: on the outer side surface of described impeller nut, have a groove by the impeller place, have a groove by the impeller nut place on the axis hole of impeller, between impeller nut and impeller, be provided with lock washer, interior stop pin on the lock washer snaps in the groove on the impeller nut, and outer stop pin snaps in the groove on the impeller axis hole.

The thickness of described lock washer is 1mm.

The utility model has the advantages that: simple in structure, with low cost, easy to process, prevent that effectively the loosening situation of impeller nut from producing, and makes the operation of pump safety and steady ground.

Description of drawings

Fig. 1 is the prior art section of structure.

Fig. 2 is the utility model section of structure.

Fig. 3 is the lock washer structural representation.

Fig. 4 is the female schematic representation of impeller spiral shell structure.

Below in conjunction with drawings and Examples the utility model is elaborated.

Embodiment

Among the figure, a kind of novel impeller nut anti-looseness structure, comprise: axle 11, be set in impeller 12, impeller nut 14 and the lock washer 13 of axle on 11, it is characterized in that: on the outer side surface of described impeller nut 4, have a groove 15 by impeller 2 places, have a groove 16 by impeller nut 14 places on the axis hole 17 of impeller 12, between impeller nut 14 and impeller 12, be provided with lock washer 13, interior stop pin 22 on the lock washer 13 snaps in 15 li of grooves on the impeller nut 14, and outer stop pin 21 snaps in 16 li of grooves on the impeller axis hole 17.

The thickness of described lock washer 3 is 1mm.

During the processing anti-loose structure, earlier respectively process groove with impeller axis hole 17 in impeller nut 14 sides, after being contained in impeller 12 on the axle 11, lock washer 13 is installed, owing to do not have too many space between impeller front end and the impeller nut, so lock washer 13 is unsuitable blocked up, adopt the 1mm steel plate to be made, stop pin card 22 in the lock washer 13 is gone in the groove 15 of impeller axis hole 17, impeller nut 4 is installed then, after tightening the outer stop pin 21 of lock washer 13 is snapped into 16 li of the grooves of impeller nut 14 outer rims, can prevent that impeller nut 4 is loosening.Nearly all single-stage cantilever type centrifugal pump can use this structure, guarantees that pump moves more reposefully.

During pump work, by axle 11 impeller 12 high speed rotating, power effect between the interior stop pin 22 by impeller 12 and lock washer 13 and the outer stop pin 21 of impeller nut 14 and lock washer 13, having offset the trend of getting loose is the loosening rotating force that produces, and has prevented impeller nut 13 loosening situations effectively.

Below only expressed mode of execution of the present utility model, it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model patent scope.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.

The utility model advantage is: simple in structure, with low cost, easy to process, prevent that effectively the loosening situation of impeller nut from producing, and makes the operation of pump safety and steady ground.

Claims

1. novel impeller nut anti-looseness structure, comprise: axle, be set in impeller, impeller nut and lock washer on the axle, it is characterized in that: on the outer side surface of described impeller nut, have a groove by the impeller place, have a groove by the impeller nut place on the axis hole of impeller, between impeller nut and impeller, be provided with lock washer, interior stop pin on the lock washer snaps in the groove on the impeller nut, and outer stop pin snaps in the groove on the impeller axis hole.

2. a kind of novel impeller nut anti-looseness structure according to claim 1, it is characterized in that: the thickness of described lock washer is 1mm.