CN112943683A

CN112943683A - Impeller anti-loosening device for pump

Info

Publication number: CN112943683A
Application number: CN201911260743.1A
Authority: CN
Inventors: 蒋建英
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2021-06-11

Abstract

The invention belongs to the field of anti-loosening equipment, in particular to an impeller anti-loosening device for a pump, and provides a scheme aiming at the problem that the existing impeller is inconvenient to prevent the impeller from loosening. The impeller fixing device is reasonable in design, and the impeller, the nut and the rotating shaft can be fixed together through the fixing pin, so that loosening of the impeller can be prevented.

Description

Impeller anti-loosening device for pump

Technical Field

The invention relates to the technical field of anti-loosening equipment, in particular to an impeller anti-loosening device for a pump.

Background

Pumps play an important role in industrial and agricultural production, and centrifugal pumps are the most common structural form. The impeller of the pump is fixed with the main shaft through the impeller nut, and in order to achieve the purpose of looseness prevention, except that a flat key is arranged between the impeller and the main shaft, the thread turning direction of the impeller nut is opposite to the rotating direction of the main shaft. However, in the fixed structure, at the moment when the pump stops operating, the medium in the pipeline flows back due to the action of gravity to enable the impeller to rotate reversely, at the moment, the rotation direction of the impeller is the same as the rotation direction of the impeller nut, so that the impeller nut is loosened or even falls off, equipment is often damaged, and the problem that the impeller is not convenient to prevent from loosening exists, so that the impeller anti-loosening device for the pump is provided for solving the problem.

Disclosure of Invention

The invention aims to solve the defect that the impeller is inconvenient to prevent from loosening in the prior art, and provides an impeller loosening prevention device for a pump.

In order to achieve the purpose, the invention adopts the following technical scheme:

the anti-loosening device for the pump impeller comprises a rotating shaft and the impeller positioned on the rotating shaft, wherein a positioning plate is fixedly arranged on the rotating shaft, two symmetrically arranged positioning grooves are formed in one side of the positioning plate, two symmetrically arranged positioning seats are fixedly arranged on one side of the impeller, the positioning seat is matched with the corresponding positioning groove, a nut is arranged on the rotating shaft in a threaded manner, an annular plate is fixedly arranged on one side of the nut, the annular plate is movably sleeved on the rotating shaft, the top and the bottom of the rotating shaft are both provided with fixing grooves, the annular plate is provided with a first groove, a fixing pin is arranged in the first groove in a sliding manner, the fixing pins are matched with the corresponding fixing grooves, a threaded hole is arranged on the inner wall of one side of the first groove far away from the opening of the first groove, a fixing bolt is arranged in the threaded hole, and the fixing bolt is rotatably arranged on the fixing pin, and a second groove is formed in the inner wall of one side of the first groove.

Preferably, the opposite side of impeller is seted up two symmetrical draw-in grooves that set up, and slidable mounting has the sliding plate in the second inslot, and one side fixed mounting of sliding plate has the bayonet lock, and bayonet lock and the draw-in groove looks adaptation that corresponds, owing to be provided with bayonet lock and draw-in groove, can strengthen the fixed to the impeller.

Preferably, one side of the fixed pin is hinged with one end of a push rod, the other end of the push rod is hinged on the corresponding sliding plate, and due to the fact that the push rod is arranged, the fixed pin can move by driving the sliding plate to move through the push rod.

Preferably, the rotating shaft is provided with an external thread, the inner wall of the nut is provided with an internal thread, the direction of the internal thread is opposite to the rotating direction of the rotating shaft, the internal thread is meshed with the external thread, and the nut can prevent the impeller from loosening due to the arrangement of the nut.

Preferably, the top inner wall and the bottom inner wall of the second groove are provided with limiting grooves, the top inner wall and the bottom inner wall of the sliding plate are provided with limiting seats, the limiting seats are in sliding connection with the corresponding limiting grooves, and the sliding plate can be stably moved due to the fact that the limiting grooves and the limiting seats are arranged.

In the invention, when the impeller is installed, the impeller is firstly sleeved on the rotating shaft, the impeller is moved, so that the positioning seat on the impeller is clamped into the positioning groove on the positioning plate, the impeller can be positioned, then the nut is installed, the movement of the nut can drive the annular plate to move, when the annular plate is in tight contact with the impeller, the fixing pin corresponds to the corresponding fixing groove, then the fixing bolt is rotated, under the action of the threaded hole, the fixing bolt can rotate and move, the movement of the fixing bolt can drive the fixing pin to move, the fixing pin can be arranged in the corresponding fixing groove, so that the nut can be fixed, the movement of the fixing pin can drive the push rod to move, the push rod can drive the sliding plate to move, the sliding plate can drive the bayonet lock to move, so that the bayonet lock can be clamped into the clamping groove, thereby can strengthen the fixed to the impeller, can be in the same place impeller, nut and axis of rotation are fixed through the fixed pin to can place the not hard up of impeller.

The impeller fixing device is reasonable in design, simple in structure and convenient to operate, and the impeller, the nut and the rotating shaft can be fixed together through the fixing pin, so that loosening of the impeller can be prevented.

Drawings

Fig. 1 is a schematic structural view of an impeller anti-loosening device for a pump according to the present invention;

fig. 2 is a schematic structural view of a part a of the anti-loosening device for the impeller for the pump, which is provided by the invention;

fig. 3 is a schematic structural diagram of a part B of the anti-loosening device for the pump impeller according to the present invention.

In the figure: 1. a rotating shaft; 2. an impeller; 3. positioning a plate; 4. positioning a groove; 5. positioning seats; 6. a nut; 7. an annular plate; 8. a first groove; 9. a fixing pin; 10. fixing grooves; 11. a threaded hole; 12. fixing the bolt; 13. a card slot; 14. a second groove; 15. a sliding plate; 16. a bayonet lock; 17. a push rod.

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.

Referring to fig. 1-3, the impeller anti-loosening device for the pump comprises a rotating shaft 1 and an impeller 2 positioned on the rotating shaft 1, wherein a positioning plate 3 is fixedly installed on the rotating shaft 1, two positioning grooves 4 which are symmetrically arranged are formed in one side of the positioning plate 3, two positioning seats 5 which are symmetrically arranged are fixedly installed on one side of the impeller 2, the positioning seats 5 are matched with the corresponding positioning grooves 4, a nut 6 is installed on the rotating shaft 1 in a threaded manner, an annular plate 7 is fixedly installed on one side of the nut 6, the annular plate 7 is movably sleeved on the rotating shaft 1, fixing grooves 10 are formed in the top and the bottom of the rotating shaft 1, a first groove 8 is formed in the annular plate 7, a fixing pin 9 is slidably installed in the first groove 8, the fixing pin 9 is matched with the corresponding fixing groove 10, a threaded hole 11 is formed in the inner wall of one side, and the fixing bolt 12 is rotatably installed on the fixing pin 9, and a second groove 14 is formed on the inner wall of one side of the first groove 8.

In the invention, two symmetrically arranged clamping grooves 13 are formed in the other side of the impeller 2, the sliding plate 15 is arranged in the second groove 14 in a sliding manner, the clamping pin 16 is fixedly arranged on one side of the sliding plate 15, the clamping pin 16 is matched with the corresponding clamping groove 13, and the clamping pin 16 and the clamping groove 13 are arranged, so that the impeller 2 can be fixed in a strengthened manner.

In the invention, one side of the fixed pin 9 is hinged with one end of the push rod 17, the other end of the push rod 17 is hinged on the corresponding sliding plate 15, and the push rod 17 is arranged, so that the fixed pin 9 can drive the sliding plate 15 to move through the push rod 17 when moving.

According to the impeller, the rotating shaft 1 is provided with the external thread, the inner wall of the nut 6 is provided with the internal thread, the direction of the internal thread is opposite to the rotating direction of the rotating shaft 1, the internal thread is meshed with the external thread, and due to the arrangement of the nut 6, the nut 6 can prevent the impeller 2 from loosening.

In the invention, the inner walls of the top and the bottom of the second groove 14 are both provided with a limiting groove, the inner walls of the top and the bottom of the sliding plate 15 are both provided with a limiting seat, and the limiting seats are in sliding connection with the corresponding limiting grooves.

In the invention, when the impeller 2 is installed, firstly, the impeller 2 is sleeved on the rotating shaft 1, the impeller 2 is moved, so that the positioning seat 5 on the impeller 2 is clamped into the positioning groove 4 on the positioning plate 3, thereby the impeller 2 can be positioned, then, the nut 6 is installed, the movement of the nut 6 can drive the annular plate 7 to move, when the annular plate 7 is in pressing contact with the impeller 2, the fixing pin 9 corresponds to the corresponding fixing groove 10, then, the fixing bolt 12 is rotated, under the action of the threaded hole 11, the fixing bolt 12 can rotate and move, the movement of the fixing bolt 12 can drive the fixing pin 9 to move, the fixing pin 9 can be arranged in the corresponding fixing groove 10, thereby the nut 6 can be fixed, the movement of the fixing pin 9 can drive the push rod 17 to move, the push rod 17 can drive the sliding plate 15 to move, the sliding plate 15 can drive the bayonet 16 to move, so that bayonet 16 can block in to the draw-in groove 13 to can strengthen the fixed to impeller 2, can be together fixed impeller 2, nut 6 and axis of rotation 1 through fixed pin 9, thereby can place the not hard up of impeller 2.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. Impeller locking device for pump, including axis of rotation (1) and impeller (2) that is located axis of rotation (1), characterized in that, fixed mounting has locating plate (3) on axis of rotation (1), locating slot (4) that two symmetries set up is seted up to one side of locating plate (3), one side fixed mounting of impeller (2) has locating seat (5) that two symmetries set up, and locating seat (5) and corresponding locating slot (4) looks adaptation, threaded mounting has nut (6) on axis of rotation (1), one side fixed mounting of nut (6) has annular plate (7), and annular plate (7) activity cover is established on axis of rotation (1), fixed slot (10) have all been seted up at the top and the bottom of axis of rotation (1), set up first groove (8) on annular plate (7), slidable mounting has fixed pin (9) in first groove (8), and fixed pin (9) and corresponding fixed slot (10) looks adaptation, a threaded hole (11) is formed in the inner wall, away from the opening, of one side of the first groove (8), a fixing bolt (12) is installed in the threaded hole (11) in a threaded mode, the fixing bolt (12) is installed on the fixing pin (9) in a rotating mode, and a second groove (14) is formed in the inner wall, away from the opening, of one side of the first groove (8).

2. The impeller looseness prevention device for the pump according to claim 1, wherein two symmetrically arranged clamping grooves (13) are formed in the other side of the impeller (2), a sliding plate (15) is slidably mounted in the second groove (14), a clamping pin (16) is fixedly mounted on one side of the sliding plate (15), and the clamping pin (16) is matched with the corresponding clamping groove (13).

3. The impeller looseness prevention device for a pump according to claim 1, wherein one side of the fixing pin (9) is hinged with one end of a push rod (17), and the other end of the push rod (17) is hinged on the corresponding sliding plate (15).

4. The impeller looseness prevention device for the pump according to claim 1, wherein the rotation shaft (1) is externally threaded, and the nut (6) is internally threaded on an inner wall thereof, the direction of the internal thread being opposite to the rotation direction of the rotation shaft (1), and the internal thread being engaged with the external thread.

5. The impeller looseness prevention device for the pump according to claim 1, wherein a top inner wall and a bottom inner wall of the second groove (14) are provided with limiting grooves, a top inner wall and a bottom inner wall of the sliding plate (15) are provided with limiting seats, and the limiting seats are slidably connected with the corresponding limiting grooves.