CN219282058U

CN219282058U - Impeller with adjustable impeller diameter for centrifugal pump

Info

Publication number: CN219282058U
Application number: CN202321184299.1U
Authority: CN
Inventors: 李吉成; 李栋; 符丽
Original assignee: Lanzhou University of Technology
Current assignee: Lanzhou University of Technology
Priority date: 2023-05-17
Filing date: 2023-05-17
Publication date: 2023-06-30
Anticipated expiration: 2033-05-17

Abstract

The utility model discloses an impeller for a centrifugal pump with an adjustable impeller diameter, which comprises a wheel disc, wherein a fixed sleeve is fixedly arranged at one end of the wheel disc, a rotating sleeve is sleeved on the outer surface of the fixed sleeve, a clamping block is arranged on the inner side of the rotating sleeve, teeth are arranged on the outer surface of the rotating sleeve, a rotating shaft is distributed on one side of the rotating sleeve, and a half gear is connected with the front end of the rotating shaft; the diameter size of the impeller can be adjusted according to actual use requirements by utilizing the combination of the teeth, the half gears and the rotating sleeve, and further the flow of the centrifugal pump can be changed without adjusting the opening of the water outlet valve and the rotating speed of the impeller.

Description

Impeller with adjustable impeller diameter for centrifugal pump

Technical Field

The utility model relates to the field of impellers for centrifugal pumps with adjustable impeller diameters, in particular to an impeller for a centrifugal pump with adjustable impeller diameters.

Background

The centrifugal pump is used for converting the kinetic energy of an electric motor into the kinetic energy of a fluid, and the device is used for separating water by centrifugal force generated by rotation of an impeller, so that the water is thrown to the edge of the impeller and flows through a volute casing to enter a pressure pipeline of the centrifugal pump. The diameter of the impeller of the centrifugal pump influences the flow rate of the centrifugal pump;

the centrifugal pump with the adjustable impeller diameter disclosed by the utility model with the authorized publication number of CN208169193U is provided with the liquid inlet pipe with the middle part higher than the pump body, plays the role of a communicating vessel, prevents liquid in the pump body from flowing back when the centrifugal pump is not started, does not need to add water into the pump body again when the centrifugal pump is started, and has better convenience, however, most impellers on the market are fixed in diameter, the diameter size of the impellers is difficult to adjust according to actual use requirements, and then the flow of the centrifugal pump needs to be changed by adjusting the opening of a water outlet valve and the rotating speed of the impellers, but the opening of the water outlet valve is reduced, so that the water flow resistance is increased, the mechanical loss in a waterway is increased, and the efficiency of the centrifugal pump and the rotating speed of the impellers are reduced.

Disclosure of Invention

In order to overcome the defects of the prior art, the impeller for the centrifugal pump, which is provided by the utility model, can solve the problems that the prior impeller plays a role of a communicating vessel through the liquid inlet pipe with the middle part higher than the pump body, liquid in the pump body is prevented from flowing back when the centrifugal pump is not started, water is not required to be added into the pump body when the centrifugal pump is started again, the convenience is better, most impellers on the market are fixed in diameter and are difficult to adjust the diameter size of the impellers according to actual use requirements, the flow of the centrifugal pump is changed, the opening degree of a water outlet valve and the rotating speed of the impellers are required to be adjusted, but the opening degree of the water outlet valve is reduced, so that the water flow resistance is increased, the mechanical loss in a waterway is increased, and meanwhile, the efficiency of the centrifugal pump and the rotating speed of the impellers are also reduced.

In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides an impeller for centrifugal pump of adjustable impeller diameter, includes the rim plate, the one end fixed mounting of rim plate has fixed cover, just fixed cover's surface cover is equipped with changes the cover, the fixture block is installed to the inboard of changeing the cover, change the surface mounting of cover has tooth, change one side of cover and distribute the pivot, just the front end of pivot is connected with half gear, half gear's one end is connected with the blade, just the spout has been seted up to the one end inboard of blade, the inboard of spout is connected with the slider, just one side of slider is connected with the pull rod, the inboard of fixed cover runs through there is the connecting axle, fixed cover's inside wall is connected with the locating lever.

As a preferable technical scheme of the utility model, a limit sliding plate is sleeved on the outer surface of the positioning rod, one side of the limit sliding plate is connected with a return spring, and an annular groove is formed on the outer surface of the fixing sleeve.

As a preferable technical scheme of the utility model, the outer diameter size of the fixed sleeve is matched with the inner diameter size of the rotating sleeve, and the inner side wall of the fixed sleeve is provided with a through hole matched with the diameter size of the positioning rod.

As a preferable technical scheme of the utility model, the teeth are equidistantly distributed along the center point of the rotating sleeve, and the half gear is in meshed connection with the rotating sleeve through the teeth.

As a preferable technical scheme of the utility model, the blades are equidistantly distributed along the center point of the wheel disc, and the blades are rotatably connected with the wheel disc through the rotating shaft.

As a preferable technical scheme of the utility model, the positioning rods are in sliding connection with the fixed sleeve through the limiting sliding plate, and the positioning rods are distributed at equal intervals along the central point of the fixed sleeve.

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

1. the diameter size of the impeller can be adjusted according to actual use requirements by utilizing the combination of the teeth, the half gear and the rotating sleeve, so that the flow of the centrifugal pump can be changed without adjusting the opening of the water outlet valve and the rotating speed of the impeller, the centrifugal pump is more convenient and quick, when the rotating sleeve drives a plurality of teeth which are equidistantly distributed on the outer surface of the rotating sleeve to rotate along with the rotating sleeve, the blades can rotate around the wheel disc through the rotating shaft by utilizing the meshing connection between the teeth and the half gear, and the diameter size of the whole impeller can be adjusted by combining the rotation among the blades;

2. the combined use between locating lever, spacing slide and the reset spring that utilizes the setting can carry out the location processing to the position of changeing the cover after the diameter size adjustment of impeller finishes, prevent that the interval between the blade from changing in the course of the work of whole impeller, and then influence centrifugal pump's flow, cause unnecessary trouble, can promote the locating lever to the outside when the connecting axle is input the inboard of fixed cover, and then make the locating lever drive spacing slide pulling reset spring to make its deformation produce reverse effort, can be input the inboard of a plurality of locating holes of changeing cover inside wall equidistance distribution respectively when the locating lever moves simultaneously, so as to realize the location processing of changeing the cover, ensure that it can not take place to rotate at the during operation of follow-up impeller.

Drawings

FIG. 1 is a schematic view of an impeller structure for a centrifugal pump with an adjustable impeller diameter according to the present utility model;

FIG. 2 is an enlarged schematic view of the impeller of FIG. 1 for a centrifugal pump with adjustable impeller diameter according to the present utility model;

FIG. 3 is a schematic view of the internal structure of an impeller blade for a centrifugal pump with an adjustable impeller diameter according to the present utility model;

FIG. 4 is a schematic perspective view of an impeller fixing sleeve for a centrifugal pump with adjustable impeller diameter;

wherein: 1. a wheel disc; 2. a fixed sleeve; 3. a rotating sleeve; 4. a clamping block; 5. teeth; 6. a rotating shaft; 7. a half gear; 8. a blade; 9. a chute; 10. a slide block; 11. a pull rod; 12. a connecting shaft; 13. a positioning rod; 14. a limit sliding plate; 15. a return spring; 16. an annular groove.

Detailed Description

In order that the manner in which the above recited features, objects and advantages of the present utility model are obtained will become readily apparent, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Based on the examples in the embodiments, those skilled in the art can obtain other examples without making any inventive effort, which fall within the scope of the utility model.

Referring to fig. 1, 3 and 4, the utility model provides an impeller for a centrifugal pump with an adjustable impeller diameter, which comprises a wheel disc 1, wherein a fixed sleeve 2 is fixedly arranged at one end of the wheel disc 1, a rotating sleeve 3 is sleeved on the outer surface of the fixed sleeve 2, the outer diameter of the fixed sleeve 2 is matched with the inner diameter of the rotating sleeve 3, a through hole matched with the diameter of a positioning rod 13 is formed in the inner side wall of the fixed sleeve 2, a clamping block 4 is arranged at the inner side of the rotating sleeve 3, teeth 5 are arranged on the outer surface of the rotating sleeve 3, a rotating shaft 6 is distributed at one side of the rotating sleeve 3, a half gear 7 is connected at the front end of the rotating shaft 6, a blade 8 is connected at one end of the half gear 7, a sliding groove 9 is formed at the inner side of one end of the blade 8, a sliding block 10 is connected at the inner side of the sliding groove 9, a pull rod 11 is connected at one side of the sliding block 10, a connecting shaft 12 penetrates through the inner side of the fixed sleeve 2, and the inner side of the fixed sleeve 2 is connected with a positioning rod 13.

When the impeller is used, the diameter of the impeller is adjusted by the aid of the adjusting structure, then the connecting shaft 12 penetrates through the inner side of the fixed sleeve 2, and the position of the rotating sleeve 3 can be positioned by the aid of the positioning structure, so that the impeller is prevented from rotating during operation.

As a further implementation manner of this embodiment, as shown in fig. 1, fig. 2, fig. 3 and fig. 4, one end of the wheel disc 1 is fixedly provided with a fixed sleeve 2, and the outer surface sleeve of the fixed sleeve 2 is provided with a rotating sleeve 3, the inner side of the rotating sleeve 3 is provided with a clamping block 4, the clamping blocks 4 are equidistantly distributed along the central point of the rotating sleeve 3, and the rotating sleeve 3 is rotationally connected with the fixed sleeve 2 through the arranged clamping blocks 4, so that the clamping blocks 4 are in sliding connection with the fixed sleeve 2, the outer surface of the rotating sleeve 3 is provided with teeth 5, the teeth 5 are equidistantly distributed along the central point of the rotating sleeve 3, a half gear 7 is meshed with the rotating sleeve 3 through the teeth 5, one side of the rotating sleeve 3 is provided with a rotating shaft 6, the front end of the rotating shaft 6 is connected with a half gear 7, one end of the half gear 7 is connected with a blade 8, one end inner side of the blade 8 is provided with a sliding groove 9, one side of the sliding groove 9 is connected with a sliding block 10, one side of the sliding block 10 is connected with a pull rod 11, the blade 8 is equidistantly distributed along the central point of the wheel disc 1, the blade 8 is rotationally connected with the rotating shaft 1 through the 6, the inner side of the fixed sleeve 2 is provided with a rotating shaft 12, the sliding plate 2 is connected with a positioning rod 13 through the sliding rod 13, the sliding rod is connected with the positioning rod 13, the positioning rod 13 is fixedly connected with the positioning rod 13, the positioning rod is provided with the positioning rod 13, the positioning rod is connected with the positioning rod 13 through the positioning rod 13, and the positioning rod is fixedly provided with the positioning rod 13, and the positioning rod is connected with the positioning rod 13 through the positioning rod 13, and the positioning rod is 13 is connected with the positioning rod is 13 through the positioning rod 13, and the positioning rod is 13.

When the diameter size of the impeller is required to be regulated, the rotating sleeve 3 is rotated, because the rotating sleeve 3 is connected with the fixed sleeve 2 in a rotating way through the clamping blocks 4, the rotating sleeve 3 rotates around the fixed sleeve 2, then the rotating sleeve 3 drives a plurality of teeth 5 which are equidistantly distributed on the outer surface of the rotating sleeve to rotate along with the rotating sleeve, further the synchronous rotation of the half gear 7 is realized through the meshing connection of the teeth 5 and the half gear 7, then the blades 8 rotate around the wheel disc 1 through the rotating shaft 6 under the rotating action of the half gear 7, when the blades 8 rotate around the wheel disc 1, the pull rods 11 connected with one sides of the top ends of the blades can be driven to move, and then the rotation of the blades 8 is limited by the pull rods 11 to ensure the consistent distance between the blades 8, and after the diameter size of the impeller is regulated, the connecting shaft 12 penetrates through the inner side of the fixed sleeve 2, meanwhile, the connecting shaft 12 pushes the positioning rod 13 outwards and drives the limit slide plate 14 sleeved on the outer surface of the connecting shaft to move along with the positioning rod 13, the rear limit slide plate 14 drives the reset spring 15 to deform along with the reset spring, and the reset spring deforms to generate reverse acting force, so that the rebound of the positioning rod 13 is convenient to realize later, because the inner side of the rotating sleeve 3 is equidistantly provided with a plurality of positioning holes matched with the positioning rod 13, the positioning holes formed in the inner side wall of the rotating sleeve 3 are equidistantly distributed along the central point of the rotating sleeve 3, the positions of the uniformly distributed positioning holes and the clamping blocks 4 are mutually staggered, the arrangement of the clamping blocks 4 does not influence the input of the positioning rod 13 into the inner side of the positioning holes, and meanwhile, the rotating sleeve 3 rotates equidistantly along a certain distance during each rotation, so that the position of the positioning holes can be always kept at one side of the positioning rod 13, further, the positioning process of the turn sleeve 3 can be realized when the positioning rod 13 is inputted to the inside of the positioning hole.

The specific working principle is as follows: when the diameter of the impeller is required to be regulated, the rotating sleeve 3 is rotated around the fixed sleeve 2, then the rotating sleeve 3 drives the teeth 5 of the impeller to rotate along with the rotating sleeve, synchronous rotation of the half gear 7 is realized by meshing connection of the teeth 5 and the half gear 7, when the half gear 7 rotates, the rotating shaft 6 rotates around the wheel disc 1, then the blades 8 rotate around the wheel disc 1 through the rotating shaft 6 under the rotating action of the half gear 7, when the blades 8 rotate around the wheel disc 1, the pull rods 11 connected with one sides of the top ends of the blades can be driven to move, and then the rotation of the blades 8 is limited by the pull rods 11 to ensure consistent intervals between the blades 8, and after the diameter of the impeller is regulated, the connecting shaft 12 penetrates through the inner side of the fixed sleeve 2, and simultaneously the connecting shaft 12 pushes the positioning rods 13 to the outer side, the limiting slide plate 14 sleeved on the outer surface of the rotating sleeve 3 is driven to move along with the rotating sleeve, the rear limiting slide plate 14 drives the reset spring 15 to deform along with the reset spring, and the reset spring is deformed to generate reverse acting force, so that the rebound of the positioning rod 13 can be conveniently realized, as the inner side of the rotating sleeve 3 is equidistantly provided with a plurality of positioning holes matched with the positioning rod 13, the positioning holes formed in the inner side wall of the rotating sleeve 3 are equidistantly distributed along the central point of the rotating sleeve 3, the positions of the uniformly distributed positioning holes and the clamping blocks 4 are mutually staggered, the arrangement of the clamping blocks 4 does not influence the input of the positioning rod 13 into the inner side of the positioning holes, and meanwhile, the rotating sleeve 3 rotates equidistantly along a certain distance, so that the position of the positioning hole can be always kept at one side of the positioning rod 13, and the positioning treatment of the rotating sleeve 3 can be realized when the positioning rod 13 is input into the inner side of the positioning hole, thereby preventing the rotation of the rotor sleeve 3 during the subsequent operation of the impeller, and the diameter of the impeller from changing.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. Impeller for centrifugal pump of adjustable impeller diameter, including rim plate (1), its characterized in that: the novel rotary wheel comprises a wheel disc (1), and is characterized in that a fixed sleeve (2) is fixedly arranged at one end of the wheel disc (1), a rotating sleeve (3) is sleeved on the outer surface of the fixed sleeve (2), a clamping block (4) is arranged on the inner side of the rotating sleeve (3), teeth (5) are arranged on the outer surface of the rotating sleeve (3), a rotating shaft (6) is distributed on one side of the rotating sleeve (3), a half gear (7) is connected to the front end of the rotating shaft (6), a blade (8) is connected to one end of the half gear (7), a sliding groove (9) is formed in the inner side of one end of the blade (8), a sliding block (10) is connected to the inner side of the sliding groove (9), a pull rod (11) is connected to one side of the sliding block (10), a connecting shaft (12) penetrates through the inner side of the fixed sleeve (2), and a positioning rod (13) is connected to the inner side wall of the fixed sleeve (2).

2. An impeller for a centrifugal pump of adjustable impeller diameter according to claim 1, wherein: the outer surface of the locating rod (13) is sleeved with a limiting sliding plate (14), one side of the limiting sliding plate (14) is connected with a return spring (15), and the outer surface of the fixing sleeve (2) is provided with an annular groove (16).

3. An impeller for a centrifugal pump of adjustable impeller diameter according to claim 1, wherein: the outer side diameter of the fixed sleeve (2) is matched with the inner side diameter of the rotating sleeve (3), and the inner side wall of the fixed sleeve (2) is provided with a through hole matched with the diameter of the positioning rod (13).

4. An impeller for a centrifugal pump of adjustable impeller diameter according to claim 1, wherein: the teeth (5) are equidistantly distributed along the center point of the rotating sleeve (3), and the half gears (7) are in meshed connection with the rotating sleeve (3) through the teeth (5).

5. An impeller for a centrifugal pump of adjustable impeller diameter according to claim 1, wherein: the blades (8) are distributed at equal intervals along the center point of the wheel disc (1), and the blades (8) are rotationally connected with the wheel disc (1) through the rotating shaft (6).

6. An impeller for a centrifugal pump of adjustable impeller diameter according to claim 2, wherein: the locating rods (13) are in sliding connection with the fixed sleeve (2) through the limiting sliding plates (14), and the locating rods (13) are distributed at equal intervals along the center point of the fixed sleeve (2).