阅读说明：本技术 一种快速混流泵叶轮锁紧装置 (Impeller locking device of rapid mixed flow pump ) 是由 万代祥 万超 张鑫麟 于 2020-06-24 设计创作，主要内容包括：本发明公开了混流泵叶轮技术领域的一种快速混流泵叶轮锁紧装置,包括泵轴,所述泵轴上套接有叶轮,所述叶轮的轴向通过第一锁紧螺母和第二锁紧螺母与泵轴固定,所述第二锁紧螺母位于压紧叶轮的一端设置裙边,所述裙边上沿第二锁紧螺母周边均匀分布个与第二锁紧螺母相匹配的第一定位销孔,所述叶轮上设有与第一定位销孔相匹配的第二定位销孔,所述第一定位销孔和第二定位销孔之间通过定位销连接,所述第一锁紧螺母和第二锁紧螺母内部设有退刀槽,通过设置第一锁紧螺母、第二锁紧螺母和定位销能够提高混流泵叶轮的锁紧效果。(The invention discloses a quick mixed flow pump impeller locking device in the technical field of mixed flow pump impellers, which comprises a pump shaft, wherein an impeller is sleeved on the pump shaft, the axial direction of the impeller is fixed with the pump shaft through a first locking nut and a second locking nut, a skirt edge is arranged at one end of the second locking nut, which is positioned at the compressed impeller, a first positioning pin hole matched with the second locking nut is uniformly distributed on the skirt edge along the periphery of the second locking nut, a second positioning pin hole matched with the first positioning pin hole is arranged on the impeller, the first positioning pin hole and the second positioning pin hole are connected through a positioning pin, a tool withdrawal groove is arranged inside the first locking nut and the second locking nut, and the locking effect of the mixed flow pump impeller can be improved through the arrangement of the first locking nut, the second locking nut and the positioning pin.)

1. The utility model provides a quick mixed flow pump impeller locking device, includes pump shaft (1), its characterized in that: the impeller (2) is sleeved on the pump shaft (1), the impeller (2) is fixed with the pump shaft (1) in a radial direction through a key connection, the axial direction of the impeller (2) is fixed with the pump shaft (1) through a first locking nut (3) and a second locking nut (4), the second locking nut (4) is in threaded connection with the shaft end of the pump shaft (1) and compresses the impeller (2), one end, located at the compressed impeller (2), of the second locking nut (4) is provided with a skirt edge (41), 8 first positioning pin holes (42) matched with the second locking nut (4) are uniformly distributed on the skirt edge (41) along the periphery of the second locking nut (4), second positioning pin holes matched with the first positioning pin holes (42) are formed in the impeller (2), the first positioning pin holes (42) are connected with the second positioning pin holes through positioning pins (6), tool withdrawal grooves (7) are formed in the first locking nut (3) and the second locking nut (4), and a locking bolt (9) is arranged in the inner cavity of the first locking nut (3).

2. The locking device for the impeller of the rapid mixed flow pump according to claim 1, wherein: the inner cavities of the first locking nut (3) and the tool withdrawal groove (7) are provided with threaded holes matched with the locking bolts (9), and the locking bolts (9) penetrate through the inner cavities of the first locking nut (3) and the tool withdrawal groove (7) and extend to the front end of the impeller shaft.

3. The locking device for the impeller of the rapid mixed flow pump according to claim 1, wherein: the inner walls of the first locking nut (3) and the second locking nut (4) are both provided with internal threads (8), and the internal threads (8) are matched with external threads on the pump shaft (1).

4. The locking device for the impeller of the rapid mixed flow pump according to claim 1, wherein: the second locking nut (3) is a circular arc nut with a cap.

5. The locking device for the impeller of the rapid mixed flow pump according to claim 1, wherein: and a sealing gasket (5) is arranged between the second locking nut (4) and the impeller (2).

6. The locking device for the impeller of the rapid mixed flow pump according to claim 1, wherein: and a sealing gasket (5) is arranged between the first locking nut (3) and the second locking nut (4).

7. The locking device for the impeller of the rapid mixed flow pump according to claim 1, wherein: the positioning pin (6) fixes the second locking nut (4) and the impeller (2).

Technical Field

The invention relates to the technical field of mixed flow pump impellers, in particular to a locking device for a quick mixed flow pump impeller.

Background

The conventional mixed flow pump impeller is locked by a locking nut, but when the mixed flow pump impeller works, the nut is possibly loosened due to inertia, so that the phenomenon of impact or abrasion and the like caused by the change of the axial direction of the impeller is easily caused, and in order to enhance the locking effect of the mixed flow pump impeller, a quick mixed flow pump impeller locking device is provided.

Disclosure of Invention

The invention aims to provide a locking device for an impeller of a rapid mixed flow pump, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a quick mixed flow pump impeller locking device, includes the pump shaft, the epaxial impeller that has cup jointed of pump, the impeller is radial to be fixed with the pump shaft through the key-type connection, the axial of impeller is fixed with the pump shaft through first lock nut and second lock nut, the axle head threaded connection of second lock nut and pump shaft compresses tightly the impeller, the one end that second lock nut is located to compress tightly the impeller sets up the shirt rim, along the peripheral evenly distributed of second lock nut on the shirt rim with the first location pinhole of second lock nut assorted, be equipped with the second location pinhole with first location pinhole assorted on the impeller, connect through the locating pin between first location pinhole and the second location pinhole, the inside tool withdrawal groove that is equipped with of first lock nut and second lock nut, first lock nut inner chamber is equipped with locking bolt.

Furthermore, the first locking nut and the tool withdrawal groove inner cavity are provided with threaded holes matched with the locking bolts, and the locking bolts penetrate through the first locking nut and the tool withdrawal groove inner cavity and extend to the front end of the impeller shaft. Furthermore, the inner walls of the first locking nut and the second locking nut are provided with inner threads, and the inner threads are matched with the outer threads on the pump shaft.

Further, the second locking nut is an arc nut with a cap.

Further, a sealing gasket is arranged between the second locking nut and the impeller.

Further, a sealing gasket is arranged between the first locking nut and the second locking nut.

Further, the locating pin fixes the second lock nut and the impeller.

Compared with the prior art, the invention has the beneficial effects that:

1. through setting up the second locating pin hole that matches on a plurality of first locating pin holes and the impeller between locating pin and the second lock nut, fixed column second lock nut and impeller that can be fine, axial and radial fixed that can second lock nut and impeller and pump shaft strengthen the locking effect, prolong mixed flow pump impeller's life.

2. Through setting up the fixity of second lock nut more strengthening the impeller, and all be equipped with sealed the pad between first lock nut and second lock nut and the impeller, avoid liquid to get into impeller and pump shaft, influence the work of impeller and pump shaft for a long time.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a first alignment pin hole structure of the present invention;

in the figure: 1. a pump shaft; 2. an impeller; 3. a first lock nut; 4. a second lock nut; 41. a skirt edge; 42. a first dowel hole; 5. a gasket; 6. positioning pins; 7. a tool withdrawal groove; 8. an internal thread.

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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.

Example 1

Referring to fig. 1-2, the present invention provides a technical solution: a locking device for an impeller of a rapid mixed flow pump comprises a pump shaft 1, wherein an impeller 2 is sleeved on the pump shaft 1, the impeller 2 is radially fixed with the pump shaft 1 through a key connection, the axial direction of the impeller 2 is fixed with the pump shaft 1 through a first locking nut 3 and a second locking nut 4, the second locking nut 4 is in threaded connection with the shaft end of the pump shaft 1 and compresses the impeller 2, one end, located at the compressed impeller 2, of the second locking nut 4 is provided with a skirt 41, the skirt 41 is uniformly provided with 8 first positioning pin holes 42 matched with the second locking nut 4 along the periphery of the second locking nut 4, the impeller 2 is provided with a second positioning pin hole matched with the first positioning pin holes 42, the first positioning pin holes 42 are connected with the second positioning pin holes through positioning pins 6, and by arranging a plurality of positioning pin holes, the fixity between the second locking nut 4 and the impeller 2 is improved, the locking effect is enhanced, so that the service life of the impeller of the mixed flow pump is prolonged, the first lock nut 3 and the second lock nut 4 are internally provided with a tool withdrawal groove 7, the inner cavity of the first lock nut 3 is provided with a lock bolt 9, the locking effect is further improved, and the service life of the mixed flow pump impeller is prolonged.

Referring to fig. 1, threaded holes matched with a locking bolt 9 are formed in inner cavities of a first locking nut 3 and a tool withdrawal groove 7, the locking bolt 9 penetrates through the inner cavities of the first locking nut 3 and the tool withdrawal groove 7 and extends to the front end of an impeller shaft, inner threads 8 are formed in inner walls of the first locking nut 3 and an inner wall of a second locking nut 4, the inner threads 8 are matched with outer threads on a pump shaft 1, the first locking nut 3 and the pump shaft 1 can be further fixed through threaded connection between the inner threads 8 and the outer threads, so that stability is enhanced, the second locking nut 3 is a circular arc nut with a cap, a sealing gasket 5 is arranged between the second locking nut 4 and an impeller 2, the sealing gasket 5 is arranged between the first locking nut 3 and the second locking nut 4, and the sealing gasket 5 can prevent liquid from entering and contacting the impeller 2 and the pump shaft 1, so that the impeller 2 and the pump shaft 1 are affected and the service life of the mixed flow impeller pump is shortened, the second lock nut 4 is fixed to the impeller 2 by a positioning pin 6.

The working principle is as follows: the connecting key is knocked into the key groove of the pump shaft 1, the key groove of the impeller 2 is aligned to the connecting key, the impeller 2 is sleeved on the pump shaft 1, the second locking nut 4 is rotated with the shaft end thread of the pump shaft 1, the second locking nut 4 is adjusted, the pin holes of the matched second positioning pin holes in the first positioning pin hole 42 and the impeller 2 are aligned, the positioning pin 6 is inserted into the first positioning pin hole 42 and the second positioning pin hole, the second locking nut 4 is fixed with the impeller 3, and finally the first locking nut 3 is connected with the external thread of the pump shaft 1 through the external thread of the pump shaft 1 to be tightly pressed and locked with the second locking nut 4.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.