CN213953975U

CN213953975U - Double-suction impeller

Info

Publication number: CN213953975U
Application number: CN202022749049.0U
Authority: CN
Inventors: 郭梦青; 贾凤红
Original assignee: Jiangsu Huafeiyu Energy Saving Technology Co ltd
Current assignee: Jiangsu Huafeiyu Energy Saving Technology Co ltd
Priority date: 2020-11-24
Filing date: 2020-11-24
Publication date: 2021-08-13
Anticipated expiration: 2030-11-24

Abstract

The utility model discloses a double-suction impeller, which comprises a first impeller and a second impeller which are arranged in a back direction; the first impeller comprises a first wheel disc, a first blade and a positioning block; the second impeller comprises a second wheel disc and second blades; the surfaces of the first blade and the second blade are coated with elastic wear-resistant layers; the surfaces of the first wheel disc and the second wheel disc are coated with rigid wear-resistant layers; the separated first impeller and the second impeller can facilitate independent replacement of the damaged part, thereby avoiding high maintenance cost; the rigid wear-resistant layer greatly improves the surface wear resistance of the first wheel disc and the second wheel disc; the existence of the elastic wear-resistant layer enables the first blade and the second blade to have stronger wear-resistant performance, and meanwhile, the first blade and the second blade are worn to be the elastic wear-resistant layer when being used as stress bodies; the elastic wear-resistant layer can be repeatedly coated and repaired after being worn, so that the service life is prolonged.

Description

Double-suction impeller

Technical Field

The utility model relates to a water pump impeller's technical field especially relates to a double suction impeller.

Background

The pump can be applied to various fields as a conveying device regardless of sewage discharge in hydraulic engineering, tap water conveying or petroleum medium conveying in chemical enterprises; however, the vanes are easily damaged due to a series of influences such as the existence of impurities in the medium, and the service life of the pump is shortened; the existing double-suction pump impeller generally adopts an integral impeller, so that the casting cost is high, and meanwhile, when the impeller on one side is damaged, the impeller needs to be integrally replaced, and the maintenance cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves is: provided is a double suction impeller which has good wear resistance and is easy to replace a worn impeller.

In order to solve the main technical problems, the following technical scheme is adopted:

a double suction impeller comprises a first impeller and a second impeller; the first impeller and the second impeller are arranged oppositely; the first impeller comprises a first wheel disc, a first blade and a positioning block; a plurality of first blades are integrally formed on one side of the first wheel disc, and a plurality of positioning blocks protruding outwards are arranged on the other side of the first wheel disc; a plurality of first mounting holes are distributed on the surface of the first wheel disc at intervals; the second impeller comprises a second wheel disc and second blades; a plurality of second blades are integrally formed on the side of the second wheel disc, which is back to the first wheel disc, and a plurality of positioning grooves which correspond to the positioning blocks one by one and are matched with the positioning blocks are arranged on the side of the second wheel disc, which faces the first wheel disc; the number of the second blades is the same as that of the first blades and is arc-shaped; the second blades and the first blades are arranged along the same rotary direction and are arranged in a staggered manner; second mounting holes which correspond to the first mounting holes one by one are distributed on the surface of the second wheel disc at intervals; the fastener penetrates through the first mounting hole and the second mounting hole so as to fix the first impeller and the second impeller; the surfaces of the first blade and the second blade are coated with elastic wear-resistant layers; and the surfaces of the first wheel disc and the second wheel disc are coated with rigid wear-resistant layers.

Preferably, the resilient wear layer is a wear resistant material of polyurethane elastomer; the rigid wear-resistant layer is a carborundum coating.

Preferably, the carborundum coating particles of the rigid wear-resistant layer are 480 meshes.

Preferably, the thickness of the elastic wear-resistant layer is between 0.5 and 1 mm; the thickness of the rigid wear-resistant layer is 0.8-1.2 mm.

Preferably, shaft holes are formed in the middles of the first impeller and the second impeller; the three positioning blocks surround the shaft hole of the first impeller at intervals for a circle; the first mounting holes are four and are uniformly distributed for one circle of the first wheel disc; the extension length of the positioning block is smaller than the groove depth of the positioning groove.

Preferably, a shaft sleeve is fixedly connected in the shaft hole; the shaft sleeve penetrates through the first impeller and the second impeller; the shaft sleeve is made of hard alloy; the shaft sleeve is sleeved with the first impeller and the second impeller through clearance fit and is fixed by utilizing a flat key.

Compared with the prior art, the utility model discloses the following advantage is equipped with to the utensil:

(1) the first impeller and the second impeller which are separated can be convenient for independently replacing the damaged part, so that the high later maintenance cost is avoided; the first impeller and the second impeller are identical in structure, so that the casting cost in the early stage is reduced conveniently.

(2) The surfaces of the first wheel disc and the second wheel disc are coated with rigid wear-resistant layers, and the rigid wear-resistant layers greatly improve the surface wear resistance of the first wheel disc and the second wheel disc; the surfaces of the first blade and the second blade are coated with elastic wear-resistant layers, the first blade and the second blade have stronger wear-resistant performance due to the elastic wear-resistant layers, and the first blade and the second blade are worn as stressed bodies by the elastic wear-resistant layers; the elastic wear-resistant layer can be repeatedly coated and repaired after being worn, so that the service lives of the first blade and the second blade are prolonged.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some examples of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive work.

FIG. 1 is a schematic overall structure diagram according to a first embodiment;

fig. 2 is a left side view schematically illustrating a first impeller according to the first embodiment;

fig. 3 is a left side view schematically illustrating a second impeller according to the first embodiment;

fig. 4 is a left side view schematically illustrating a first impeller according to a second embodiment.

In the figure: the device comprises a first impeller 1, a first wheel disc 11, a first blade 12, a positioning block 13, a first mounting hole 14, a second impeller 2, a second wheel disc 21, a second blade 22, a positioning groove 23, a second mounting hole 24, a shaft hole 3 and a shaft sleeve 4.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. In addition, all the connection relations mentioned herein do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection accessories according to specific implementation conditions.

The first embodiment,

Referring to fig. 1-3, a double suction impeller includes a first impeller 1 and a second impeller 2;

first impeller

1 and 2 settings dorsad of second impeller, the centre of

first impeller

1 and 2 second impellers all is provided with

shaft hole

3, and 3 sizes in shaft hole of

first impeller

1 and 2 second impellers are unanimous.

The first impeller 1 comprises a first wheel disc 11, a first blade 12 and a positioning block 13; a plurality of first blades 12 are integrally formed on one side of the first wheel disc 11, and a plurality of positioning blocks 13 protruding outwards are arranged on the other side of the first wheel disc; the first impellers 1 are arc-shaped, and a plurality of first impellers 1 uniformly wind the first wheel disc 11 for a circle; a plurality of first mounting holes 14 are distributed on the surface of the first wheel disc 11 at intervals.

The second impeller 2 includes a second disc 21 and a second blade 22; the end face dimension of the second wheel disc 21 is the same as the end face dimension of the first wheel disc 11; a plurality of second blades 22 are integrally formed on the side of the second wheel disc 21 back to the first wheel disc 11, and the second blades 22 are arc-shaped and cut around the second wheel disc 21 for a circle; the number of the second blades 22 is the same as that of the first blades 12; the second blade 22 and the first blade 12 have the same rotation direction, that is, the first blade 12 and the second blade 22 both have a counterclockwise rotation direction or a clockwise rotation direction; both the first blade 12 and the second blade 22 are arranged in a staggered manner; the surface of the second wheel disc 21 close to the first wheel disc 11 is provided with a plurality of positioning grooves 23, and the positioning grooves 23 correspond to the positioning blocks 13 one by one and are mutually matched; the positioning blocks 13 are generally provided in three; the three positioning blocks 13 surround the shaft hole 3 of the first impeller 1 at intervals; the extension length of the positioning block 13 is smaller than the depth of the positioning groove 23, so that after the positioning block 13 is inserted into the positioning groove 23, the first wheel disc 11 and the second wheel disc 21 are attached together; second mounting holes 24 which correspond to the first mounting holes 14 one to one are distributed on the surface of the second wheel disc 21 at intervals; the number of the first mounting holes 14 is four, the first wheel disc 11 is uniformly distributed for one circle, the number of the first mounting holes 14 is four, the number of the positioning blocks 13 is three, namely, if the positioning blocks 13 are not located in the required positioning grooves 23, the first mounting holes 14 and the second mounting holes 24 cannot be in one-to-one correspondence; the fastener is arranged through the first mounting hole 14 and the second mounting hole 24, so that the first impeller 1 and the second impeller 2 are fixed into a whole; through the arrangement of the positioning block 13 and the positioning groove 23, the first impeller 1 and the second impeller 2 can be conveniently positioned and installed; the separated first impeller 1 and the second impeller 2 can facilitate the independent replacement of the damaged part, thereby avoiding high maintenance cost; the first impeller 1 and the second impeller 2 have the same structure, thereby facilitating the reduction of the casting cost in the early stage.

The surfaces of the first blade 12 and the second blade 22 are coated with elastic wear-resistant layers; the elastic wear-resistant layer is a wear-resistant material of a polyurethane elastomer; the existence of the elastic wear-resistant layer enables the first blade 12 and the second blade 22 to have stronger wear resistance, and simultaneously, the first blade 12 and the second blade 22 are worn as stress bodies, and the elastic wear-resistant layer can be repeatedly coated and repaired after being worn, so that the service life of the first blade 12 and the second blade 22 is prolonged, and the thickness of the elastic wear-resistant layer is usually 0.5-1 mm; the surfaces of the first wheel disc 11 and the second wheel disc 21 are coated with rigid wear-resistant layers; the rigid wear-resistant layer is a carborundum coating; the carborundum coating particles of the rigid wear-resistant layer are 480 meshes; the thickness of the rigid wear-resistant layer is 0.8-1.2mm, and the rigid wear-resistant layer greatly improves the surface wear resistance of the first wheel disc 11 and the second wheel disc 21.

Example II,

Referring to fig. 4, the difference between the second embodiment and the first embodiment is that a shaft sleeve 4 is fixedly connected in the shaft hole 3 on the basis of keeping the first embodiment; the shaft sleeve 4 penetrates through the first impeller 1 and the second impeller 2; the shaft sleeve 4 is made of hard alloy; the shaft sleeve 4 is sleeved with the first impeller 1 and the second impeller 2 in a clearance fit manner and is fixed by a flat key; the shaft sleeve 4 made of hard alloy can facilitate the sealing part to have stronger wear resistance.

In the first embodiment, after casting, the surfaces of the first wheel disc 11 and the second wheel disc 21 are coated with rigid wear-resistant layers, and the surfaces of the first impeller 1 and the second impeller 2 are coated with elastic wear-resistant layers; clamping the positioning block 13 of the first impeller 1 into the positioning groove (23) and enabling the first mounting holes 14 and the second mounting holes 24 to correspond one to one; fastening screws with good wear resistance and corrosion resistance are used for penetrating through the first mounting hole (14) and the second mounting hole (24) to connect the first impeller (1) and the second impeller (2) in a back-to-back mode.

In the second embodiment, on the basis of the first embodiment, the first impeller 1 and the second impeller 2 which are fixed together are sleeved outside the shaft sleeve 4 and fixedly connected through a flat key.

It should be noted that, in the present invention, "upper, lower, left, right, inner and outer" are defined based on the relative position of the components in the drawings, and are only for the clarity and convenience of describing the technical solution, it should be understood that the application of the directional terms does not limit the protection scope of the present application.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or some of the technical features may be substituted by equivalent substitutions, modifications and the like, all of which are within the spirit and principle of the present invention.

Claims

1. A double suction impeller is characterized in that: comprises a first impeller (1) and a second impeller (2); the first impeller (1) and the second impeller (2) are arranged in a back-to-back manner; the first impeller (1) comprises a first wheel disc (11), a first blade (12) and a positioning block (13); a plurality of first blades (12) are integrally formed on one side of the first wheel disc (11), and a plurality of outwards-convex positioning blocks (13) are arranged on the other side of the first wheel disc; a plurality of first mounting holes (14) are distributed on the surface of the first wheel disc (11) at intervals; the second impeller (2) comprises a second disk (21) and second blades (22); a plurality of second blades (22) are integrally formed on the side of the second wheel disc (21) back to the first wheel disc (11), and a plurality of positioning grooves (23) which correspond to the positioning blocks (13) one by one and are matched with the positioning blocks (13) are arranged on the side facing the first wheel disc (11); the number of the second blades (22) is the same as that of the first blades (12) and is arc-shaped; the second blade (22) and the first blade (12) are arranged along the same rotation direction and are arranged in a staggered manner; second mounting holes (24) which correspond to the first mounting holes (14) one by one are distributed on the surface of the second wheel disc (21) at intervals; the fastener penetrates through the first mounting hole (14) and the second mounting hole (24) so as to fix the first impeller (1) and the second impeller (2); the surfaces of the first blade (12) and the second blade (22) are coated with elastic wear-resistant layers; the surfaces of the first wheel disc (11) and the second wheel disc (21) are coated with rigid wear-resistant layers.

2. A double suction impeller according to claim 1, wherein: the elastic wear-resistant layer is a wear-resistant material of a polyurethane elastomer; the rigid wear-resistant layer is a carborundum coating.

3. A double suction impeller according to claim 2, wherein: the carborundum coating particles of the rigid wear-resistant layer are 480 meshes.

4. A double suction impeller according to claim 1, wherein: the thickness of the elastic wear-resistant layer is 0.5-1 mm; the thickness of the rigid wear-resistant layer is 0.8-1.2 mm.

5. A double suction impeller according to claim 1, wherein: shaft holes (3) are formed in the middles of the first impeller (1) and the second impeller (2); the three positioning blocks (13) are arranged and surround the shaft hole (3) of the first impeller (1) at intervals for a circle; the number of the first mounting holes (14) is four, and the first wheel discs (11) are uniformly distributed for one circle; the extension length of the positioning block (13) is smaller than the depth of the positioning groove (23).

6. A double suction impeller according to claim 5, wherein: a shaft sleeve (4) is fixedly connected in the shaft hole (3); the shaft sleeve (4) penetrates through the first impeller (1) and the second impeller (2); the shaft sleeve (4) is made of hard alloy; the shaft sleeve (4) is sleeved with the first impeller (1) and the second impeller (2) through clearance fit and is fixed by a flat key.