CN202468633U - Novel impeller nut - Google Patents

Abstract

The utility model discloses a novel impeller nut, which comprises a first nut which is provide with inner threads and matched with an impeller shaft. The novel impeller nut is characterized by further comprising a second nut. External threads are arranged at an end of the outer side of the first nut. The second nut is provided with inner matching threads matched with the external threads. The novel impeller nut is simple in structure. Meanwhile, the novel impeller nut is fixed with the impeller shaft through the first nut and fixed with the second nut through the external threads on the first nut. Therefore, the first nut is clamped tightly on the shaft and can not be loosened and the novel impeller nut can effectively prevent the impeller nut from falling off in the high speed rotation. The safety performance is good and the practicability is strong.

Description

The novel impeller nut

Technical field

The utility model relates to a kind of nut, is specifically related to a kind of novel impeller nut.

Background technique

The impeller nut of existing technology, employing be single impeller nut, lock each other through the internal thread of single impeller nut and the outside thread of pump shaft, right because impeller diameter is bigger; When highly rotating, can produce very big radial force, particularly water pump starts repeatedly; And if the pressure medium carried of water pump produces water hammer when higher during termination of pumping, high pressure water recoil impeller causes the impeller counter-rotating; Very easily cause impeller nut to pitch, produce security incident, poor safety performance.

Summary of the invention

The purpose of the utility model provides a kind of simple and reasonable, good a kind of novel impeller nut of Safety performance when using.

The technological scheme that realizes the utility model purpose provides a kind of novel impeller nut; Comprise and be provided with tapped first nut that matches with impeller shaft; Also comprise second nut; One end in said first nut outside is provided with outside thread, and said second nut is provided with the interior matching thread that matches with said outside thread.

Further, outside thread one side of said first nut is provided with axial groove.

Further, said axial groove is four wide sulculuses of two millimeters.

Further, said second nut is the nut of end sealing, on sealing surface, is provided with tapped hole.

Further, said outside thread and interior matching thread are tapered thread.

The utlity model has positive effect: in (1), the utility model; Comprise and be provided with tapped first nut that matches with impeller shaft; Also comprise second nut; One end in said first nut outside is provided with outside thread, and said second nut is provided with the interior matching thread that matches with said outside thread; Simple in structure, fix through first nut and impeller shaft, and fix through the outside thread on first nut and second nut; Played and be clamped in the effect that to become flexible on the axle to first nut; Can effectively prevent impeller nut in high speed rotating, to come off, Safety performance is good, and be practical.

(2), in the utility model; Outside thread one side of first nut is provided with four wide axial grooves of two millimeters, because the outer cone thread arrangements of components of first impeller nut has four axial grooves, this axial groove makes the tapered thread parts of first impeller nut have elasticity; When firmly second impeller being locked toward first impeller nut; Will produce stubborn more tightly more, can prevent effectively that impeller nut is loosening, further strengthen the Safety performance of impeller nut.

(3), in the utility model; Said second nut is the nut of end sealing, on sealing surface, is provided with tapped hole, after tightening second nut; Can be through tapped hole with fixing second nut of positioning screwn and impeller shaft; Play further locking effect, further effectively played the situation that prevents that impeller is loosening, Safety performance further improves.

Description of drawings

For the content that makes the utility model is more clearly understood, below according to specific embodiment and combine accompanying drawing, the utility model is done further detailed explanation, wherein:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the second nut structure schematic representation of novel impeller nut shown in Figure 1.

Reference character: first nut 1, second nut 2, outside thread 3, interior matching thread 4, axial groove 5, sealing surface 6, tapped hole 7.

Embodiment

(embodiment 1)

Fig. 1 and Fig. 2 have shown a kind of embodiment of the utility model, and wherein Fig. 1 is the composite structure schematic representation of the utility model; Fig. 2 is the second nut structure schematic representation of novel impeller nut shown in Figure 1.

See Fig. 1 and Fig. 2; A kind of novel impeller nut comprises being provided with tapped first nut 1 that matches with impeller shaft, also comprises second nut 2; One end in first nut, 1 outside is provided with outside thread 3, the second nuts 2 and is provided with the interior matching thread 4 that matches with outside thread 3.

Outside thread 3 one sides of first nut 1 are provided with axial groove 5.

Axial groove 5 is four wide sulculuses of two millimeters.

Second nut 2 is the nut of end sealing, on sealing surface 6, is provided with tapped hole 7.

Outside thread 3 is a tapered thread 4 with interior matching thread.

In use, the fastening impeller that connects with the pump shaft outside thread of the internal thread through first impeller nut.

Cooperate fastening with the outer cone thread of first impeller nut the inside tapered thread of second impeller nut; Because the outer cone thread arrangements of components of first impeller nut has four axial grooves; This axial groove makes the tapered thread parts of first impeller nut have elasticity; When firmly with second impeller toward first impeller nut locking, will produce stubborn more tightly more, prevent the effect that impeller nut is loosening.After second impeller nut tightened, at second impeller nut end face only positioning screwn of screwing on, play further locking effect, these two roads safty device have solved the problem that impeller becomes flexible effectively.

Obviously, the foregoing description of the utility model only be for explain clearly that the utility model does for example, and be not to be qualification to the mode of execution of the utility model.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all mode of executions.And conspicuous variation that these connotations that belong to the utility model are extended out or change still belong to the protection domain of the utility model.

Claims (5)

1. novel impeller nut; Comprise and be provided with tapped first nut (1) that matches with impeller shaft; It is characterized in that: also comprise second nut (2); One end in said first nut (1) outside is provided with outside thread (3), and said second nut (2) is provided with the interior matching thread (4) that matches with said outside thread (3).

2. novel impeller nut according to claim 1 is characterized in that: outside thread (3) one sides of said first nut (1) are provided with axial groove (5).

3. novel impeller nut according to claim 2 is characterized in that: said axial groove (5) is four wide sulculuses of two millimeters.

4. according to claim 1 or the described novel impeller nut of claim 2, it is characterized in that: said second nut (2) is the nut of end sealing, on sealing surface (6), is provided with tapped hole (7).

5. novel impeller nut according to claim 1 is characterized in that: said outside thread (3) and interior matching thread (4) are tapered thread.

Images