CN215890505U

CN215890505U - Impeller anti-loosening device of submersible pump

Info

Publication number: CN215890505U
Application number: CN202122319939.2U
Authority: CN
Inventors: 陆勇华; 刁永进
Original assignee: Zhongchuang Environmental Protection Equipment Technology Engineering Taixing Co ltd
Current assignee: Zhongchuang Environmental Protection Equipment Technology Engineering Taixing Co ltd
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2022-02-22
Anticipated expiration: 2031-09-24

Abstract

The utility model discloses a submersible pump impeller anti-loosening device which comprises a pump shaft and an impeller, wherein one end of the pump shaft, which is close to the impeller, is provided with a thread, the impeller is provided with a first screw hole and is in threaded connection with the thread arranged on the pump shaft through the first screw hole, the thread on the pump shaft is in threaded connection with an impeller nut, the impeller nut is attached to the impeller, the impeller nut is provided with four placing grooves, telescopic cylinder sleeves are respectively placed through the placing grooves, the inner wall of each telescopic cylinder sleeve is axially and slidably connected with a sliding block, one end, which is close to the pump shaft, of each sliding block is fixedly connected with a telescopic rod, the telescopic rod penetrates through the telescopic cylinder sleeves and extends out of the impeller nut, the impeller nut is provided with four limiting grooves matched with the four telescopic rods, springs are respectively placed in each telescopic cylinder sleeve, and two ends of each spring are respectively and fixedly connected with the sliding block and the inner walls of the telescopic cylinder sleeves. The utility model achieves the effects that the nut of the impeller cannot be loosened and the impeller cannot be loosened when the medium flows back through the matching of the integral structure.

Description

Impeller anti-loosening device of submersible pump

Technical Field

The utility model relates to the technical field of submersible pumps, in particular to a submersible pump impeller anti-loosening device.

Background

The submersible pump belongs to one kind of centrifugal impurity pump, and is mainly used for conveying medium containing solid particles such as fiber, paper scrap and the like in urban sewage, excrement or liquid; the submersible pump is widely applied to the fields of mining, urban municipal pollution discharge, emergency rescue, flood fighting and the like, and has the beneficial effects of large flow and capability of conveying a certain amount of impurities.

The impeller head and the pump shaft of the submersible pump in the prior art are both in threaded connection, the threaded connection is adopted mainly for preventing the impeller from loosening, but when the medium is stopped to be conveyed every time, the medium falls back to the suction end of the submersible pump, a backflow phenomenon of a certain degree can occur, the impeller can rotate reversely when the medium falls back to a working state, the reverse rotation of the impeller is consistent with the rotation direction of the impeller nut loosening, the loosening torque can be caused to occur at the impeller nut, the stopping washer can be damaged by the torque, the impeller can be loosened, after the impeller loosens, the impeller cannot normally operate when the impeller is started next time, the submersible pump vibrates, and therefore the submersible pump impeller loosening prevention device is needed to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an impeller anti-loosening device of a submersible pump, which has the advantages that an impeller nut cannot be loosened and an impeller cannot be loosened when a medium flows back, and the impeller, a pump shaft and the impeller nut are conveniently connected, and solves the problems in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme: a submersible pump impeller anti-loosening device comprises a pump shaft and an impeller, wherein one end of the pump shaft, which is close to the impeller, is provided with a thread, the impeller is provided with a first screw hole and is in threaded connection with a thread arranged on the pump shaft through the first screw hole, an impeller nut is screwed on the screw thread on the pump shaft and is attached to the impeller, four placing grooves are formed in the impeller nut, a telescopic cylinder sleeve is placed in each placing groove, a sliding block is axially and slidably connected to the inner wall of each telescopic cylinder sleeve, a telescopic rod penetrating through the telescopic cylinder sleeve and extending out of the impeller nut is fixedly connected to one end, close to the pump shaft, of each sliding block, the impeller nut is provided with four limit grooves matched with four telescopic rods, each telescopic cylinder sleeve is internally provided with a spring, and two ends of each spring are fixedly connected with the inner walls of the sliding block and the telescopic cylinder sleeve respectively.

Preferably, the impeller and the pump shaft are provided with second screw holes, and screws are screwed through the second screw holes.

Preferably, the second screw hole is screwed with a sealing cover, and the sealing cover is attached to the screw.

Preferably, a sealing ring is arranged between the second screw hole and the sealing cover.

Preferably, the screw is a fastening socket head cap screw.

Preferably, one end of each group of the telescopic rods, which is far away from the sliding block, is spherical.

Compared with the prior art, the utility model has the following beneficial effects:

1. the utility model achieves the effects that the nut of the impeller cannot be loosened and the impeller cannot be loosened when the medium flows back through the matching of the integral structure.

2. According to the utility model, the impeller is in threaded connection with the thread formed on the pump shaft through the first screw hole, and the impeller nut is in threaded connection with the thread on the pump shaft, so that the effect of convenient connection among the impeller, the pump shaft and the impeller nut is achieved.

Drawings

FIG. 1 is a first schematic view of the overall structure of the present invention;

FIG. 2 is a schematic cross-sectional view of the overall structure of the present invention;

FIG. 3 is a second external view of the overall structure of the present invention;

FIG. 4 is a schematic structural view of the telescopic rod, the spring and the telescopic barrel sleeve of the present invention.

In the figure: 1. an impeller; 2. an impeller nut; 21. a placement groove; 22. a telescopic cylinder sleeve; 23. a slider; 24. a spring; 25. a telescopic rod; 3. a sealing cover; 31. a screw; 32. a limiting groove; 33. a first screw hole; 34. a second screw hole; 4. and a pump shaft.

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.

The utility model provides a technical scheme that: the utility model provides a immersible pump impeller locking device, including pump shaft 4 and impeller 1, the one end that pump shaft 4 is close to impeller 1 is seted up threadedly, the screw thread spiro union of seting up on impeller 1 and through first screw 33 and the pump shaft 4, the epaxial screw thread spiro union of pump has impeller nut 2, impeller nut 2 and the laminating of impeller 1, impeller nut 2 is last to have seted up four standing grooves 21 and all has placed telescopic tube cover 22 through every standing groove 21, equal axial sliding connection has slider 23 on the inner wall of every telescopic tube cover 22, the equal fixedly connected with of one end that every slider 23 is close to pump shaft 4 runs through telescopic tube cover 22 and extends to the outer telescopic link 25 of impeller nut 2, impeller nut 2 is last to have seted up with four telescopic link 25 complex spacing grooves 32, spring 24 has all been placed in every telescopic tube cover 22, every spring 24's both ends respectively with slider 23 and telescopic tube cover 22's inner wall fixed connection.

Referring to fig. 1, 2, 3 and 4, the effect of transmission medium of the submersible pump is achieved by arranging the impeller 1, the effect of driving the impeller 1 to rotate is achieved by arranging the pump shaft 4, the effect of conveniently connecting the impeller 1 and the pump shaft 4 and preliminarily preventing the impeller 1 from loosening is achieved by arranging the first screw hole 33 on the impeller 1 and screwing the first screw hole 33 with the thread arranged on the pump shaft 4, the effect of conveniently connecting the impeller nut 2 and the pump shaft 4 is achieved by arranging the impeller nut 2 screwed with the thread arranged on the pump shaft 4 and further preventing the impeller 1 from loosening is achieved because the impeller nut 2 is attached to the impeller 1, the effect of placing four sets of the telescopic cylinder sleeves 22 is achieved by arranging the four placing grooves 21 on the impeller nut 2, the telescopic cylinder sleeves 22 are arranged to achieve the effect that when the impeller nut 2 is screwed to be attached to the impeller 1, at this time, the telescopic rods 25 are opposite to the limiting grooves 32, spring 24 slides slider 23 to spacing groove 32 direction afterwards, and telescopic link 25 slides to spacing groove 32 direction promptly, thereby four telescopic links 25 all slide four spacing inslots 32, and then when having reached to stop carrying the medium at every turn, all can have the suction end that the medium fell back to the immersible pump, just there is the refluence phenomenon of certain degree, impeller 1 can appear when the medium fell back with during operating condition opposite rotation, and impeller 1's the counter-rotation is unanimous with the not hard up direction of rotation of impeller nut 2 this moment, nevertheless because the cooperation of telescopic link 25 and spacing groove 32, thereby make impeller nut 2 can not rotate and further play the effect of locking up of impeller 1.

Further, the impeller 1 and the pump shaft 4 are provided with a second screw hole 34, and a screw 31 is screwed through the second screw hole 34.

Referring to fig. 1 and 2, the effect of screwing the screw 31 is achieved by arranging the second screw hole 34, the effect of fixing the impeller 1 at the position of the pump shaft 4 is achieved by arranging the second screw hole 34 and screwing the screw 31, and the effect of deviation due to the fact that the position of the impeller 1 is not fixed when the impeller nut 2 is screwed is prevented.

Furthermore, a sealing cover 3 is screwed on the second screw hole 34, and the sealing cover 3 is attached to the screw 31.

Referring to fig. 1 and 2, the primary protection of the screw 31 from rusting and the screw connection between the impeller 1 and the pump shaft 4 from rusting are achieved by providing the seal cover 3.

Further, a sealing ring is arranged between the second screw hole 34 and the sealing cover 3.

Referring to fig. 1 and 2, the sealing ring is provided to further protect the screw 31 from rusting and the threaded connection between the impeller 1 and the pump shaft 4 from rusting.

Further, the screw 31 is a fastening socket head cap screw.

Referring to fig. 2, the screw 31 is a universal screw, which is convenient for manual screwing, by arranging the screw 31 to fasten the socket head cap screw.

Furthermore, one end of each group of telescopic rods 25, which is far away from the sliding block 23, is spherical.

Referring to fig. 2 and 4, the spherical end of each set of telescopic rods 25 away from the sliding block 23 reduces interference when the impeller nut 2 is screwed, thereby reducing friction.

The working principle is as follows: when the impeller anti-loosening device for the submersible pump is used, the impeller 1 is screwed on the threads on the pump shaft 4, the impeller 1 is conveniently connected with the pump shaft 4 and the impeller 1 is prevented from loosening initially, then one end of the impeller 1, which is far away from the pump shaft 4, is fixed with the pump shaft 4 through the screw 31, the position of the impeller 1 is prevented from being unfixed when the impeller nut 2 is screwed, so that deviation occurs, then the sealing cover 3 is screwed until the sealing cover 3 is attached to the screw 31 and the sealing cover 3 is provided with the sealing ring, the effects that the screw 31 cannot rust and the threaded connection part between the impeller 1 and the pump shaft 4 cannot rust are achieved, then the impeller nut 2 is screwed on the threads of the pump shaft 4 until the impeller nut 2 is attached to the impeller 1, the impeller nut 2 is conveniently connected with the pump shaft 4, and the impeller nut 2 is attached to the impeller 1 to further achieve the effect of preventing the impeller 1 from loosening, four telescopic links 25 are relative with four spacing grooves 32 this moment, spring 24 slides slider 23 to spacing groove 32 direction promptly telescopic link 25 slides to spacing groove 32 direction afterwards, thereby four telescopic links 25 all slide in four spacing grooves 32, and then when having reached to stop carrying the medium at every turn, all can have the suction end that the medium fell back to the immersible pump, just there is the refluence phenomenon of certain degree, impeller 1 can appear when the medium fell back with operating condition reverse rotation, and impeller 1's reverse rotation is unanimous with the not hard up direction of rotation of impeller nut 2 this moment, nevertheless because telescopic link 25 and spacing groove 32's cooperation, thereby it is further play the effect of locking not hard up to impeller 1 to make impeller nut 2 can not rotate.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a immersible pump impeller locking device which characterized in that: the pump comprises a pump shaft (4) and an impeller (1), wherein one end of the pump shaft (4) close to the impeller (1) is provided with a thread, the impeller (1) is provided with a first screw hole (33) and is in threaded connection with the thread arranged on the pump shaft (4) through the first screw hole (33), the thread arranged on the pump shaft (4) is in threaded connection with an impeller nut (2), the impeller nut (2) is attached to the impeller (1), the impeller nut (2) is provided with four placing grooves (21) and is provided with a telescopic cylinder sleeve (22) through each placing groove (21), the inner wall of each telescopic cylinder sleeve (22) is axially and slidably connected with a sliding block (23), one end of each sliding block (23) close to the pump shaft (4) is fixedly connected with a telescopic rod (25) which penetrates through the telescopic cylinder sleeve (22) and extends out of the impeller nut (2), and the impeller nut (2) is provided with four limit grooves (32) matched with the four telescopic rods (25), each spring (24) is placed in the telescopic cylinder sleeve (22), and two ends of each spring (24) are fixedly connected with the inner walls of the sliding block (23) and the telescopic cylinder sleeve (22) respectively.

2. The anti-loosening device for the impeller of the submersible pump according to claim 1, wherein: and the impeller (1) and the pump shaft (4) are provided with second screw holes (34) and are in threaded connection with screws (31) through the second screw holes (34).

3. The anti-loosening device for the impeller of the submersible pump according to claim 2, wherein: the second screw hole (34) is connected with a sealing cover (3) in a threaded mode, and the sealing cover (3) is attached to the screw (31).

4. The anti-loosening device for the impeller of the submersible pump according to claim 2 or 3, wherein: and a sealing ring is arranged between the second screw hole (34) and the sealing cover (3).

5. The anti-loosening device for the impeller of the submersible pump according to claim 2, wherein: the screw (31) is a fastening socket head cap screw.

6. The anti-loosening device for the impeller of the submersible pump according to claim 1, wherein: one end of each group of the telescopic rods (25) far away from the sliding block (23) is spherical.