CN214945237U

CN214945237U - Centrifugal fan impeller

Info

Publication number: CN214945237U
Application number: CN202120894954.7U
Authority: CN
Inventors: 单双磊
Original assignee: Hebei Yuleng Energy Saving Equipment Co ltd
Current assignee: Hebei Yuleng Energy Saving Equipment Co ltd
Priority date: 2021-04-28
Filing date: 2021-04-28
Publication date: 2021-11-30
Anticipated expiration: 2031-04-28

Abstract

The utility model discloses a centrifugal fan impeller, including chassis, blading and wheel cap, the blading is located between chassis and the wheel cap, through casting integration machine-shaping between chassis, blading and the wheel cap, the middle part that the chassis is close to wheel cap one side is provided with the flange, the mounting groove has been seted up at the middle part of flange, the inside nestification of mounting groove has the axle sleeve, first semi-circular thread groove has been seted up to the inner wall equidistant of mounting groove, the equidistant second semi-circular thread groove of having seted up of lateral wall of axle sleeve, the circular thread groove female connection who forms between second semi-circular thread groove and the first semi-circular thread groove has the screw. The utility model discloses a through casting integration machine-shaping between chassis, blading and the wheel cap, structural strength is big, and it is firm to connect stably, and processes simply relatively, through screwed connection between the protruding dish on axle sleeve and the chassis, and the installation is simple firm, and convenient to detach has reduced cost of maintenance simultaneously.

Description

Centrifugal fan impeller

Technical Field

The utility model relates to a fan wheel field, concretely relates to centrifugal fan impeller.

Background

The impeller is the heart of the blower. Different fans employ different types of impellers. Generally speaking, the impeller of centrifugal fan compares axial fan's impeller and needs complicated many, and the technological requirement is higher, according to the blade angle of impeller air outlet, can be with three kinds of impeller form flavors: the impeller is divided into a multi-wing impeller and a sub-impeller according to the impeller structure in the forward direction, the radial direction and the backward direction. The blades of the centrifugal wind wheel are generally within 10, the cross-sectional area of the blades is much larger than that of a multi-wing type, and the structure is much more complicated. The impeller suction opening is generally formed in a convex shape.

At present, the centrifugal fan impeller is low in strength and complex to machine, a shaft sleeve on a chassis is connected with the chassis through rivets, the connection is firm, the disassembly is inconvenient, and the disassembly is inconvenient to replace after the impeller is damaged.

Therefore, it is necessary to invent a centrifugal fan impeller to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a centrifugal fan impeller through casting integration machine-shaping between chassis, blading and the wheel cap, and structural strength is big, and processing is simple relatively, through screwed connection between axle sleeve and the protruding dish on the chassis, and it is simple firm to install, convenient to detach simultaneously to solve the above-mentioned weak point in the technique.

In order to achieve the above object, the present invention provides the following technical solutions: a centrifugal fan impeller comprises a chassis, a blade group and a wheel cover, wherein the chassis and the wheel cover are arranged in parallel relatively, the blade group is arranged between the chassis and the wheel cover, the chassis, the blade group and the wheel cover are integrally formed by casting or fixed by welding, a convex disc is arranged in the middle of one side of the chassis close to the wheel cover, the convex disc is arranged in the middle of the blade group, a mounting groove is formed in the middle of the convex disc, the mounting groove penetrates through the chassis, a shaft sleeve is nested inside the mounting groove, the shaft sleeve and the mounting groove are both conical, the shaft sleeve is matched with the mounting groove, a shaft hole is formed in the middle of the shaft sleeve, first semicircular thread grooves are formed in the inner wall of the mounting groove at equal intervals, the number of the first semicircular thread grooves is three, and second semicircular thread grooves are formed in the outer side wall of the shaft sleeve at equal intervals, the number of the second semicircular thread grooves is three, the position of the second semicircular thread grooves is corresponding to the position of the first semicircular thread grooves, the circular thread grooves formed between the second semicircular thread grooves and the first semicircular thread grooves are in threaded connection with screws, the inner wall of the mounting groove is provided with first semicircular dismounting grooves, the outer side of the shaft sleeve is provided with second semicircular dismounting grooves, the number of the second semicircular dismounting grooves is the same as that of the first semicircular dismounting grooves, and the positions of the second semicircular dismounting grooves are corresponding to those of the first semicircular dismounting grooves.

Preferably, the blade group comprises a plurality of blades, the number of the blades is provided with a plurality of blades, the plurality of blades are arranged on a chassis and are uniformly distributed along the circumferential direction of the chassis, and one side, far away from the chassis, of the plurality of blades is connected with a wheel cover.

Preferably, the convex disc and the bottom disc are integrally machined and formed through casting.

Preferably, the inner wall of the mounting groove is provided with a positioning groove, the outer side wall of the shaft sleeve is provided with a positioning block at a position corresponding to the positioning groove, and the positioning block is nested in the positioning groove.

Preferably, the positioning block and the shaft sleeve are integrally formed by casting.

Preferably, a key groove is formed in the position, corresponding to the positioning block, of the inner wall of the shaft sleeve.

Preferably, the surfaces of the chassis, the blade group and the wheel cover are treated by a phosphorization and blackening process.

Preferably, the surface of the shaft sleeve is treated by a phosphorization blackening process.

In the technical scheme, the utility model provides a technological effect and advantage:

1. the centrifugal fan impeller is integrally formed by casting among the chassis, the blade group and the wheel cover, so that the centrifugal fan impeller is high in structural strength, stable and firm in connection among the chassis, the blade group and the wheel cover, relatively simple to machine, simple and firm to install and convenient to disassemble, when a shaft hole is abraded, only the shaft sleeve needs to be replaced, maintenance cost is reduced, and the service life of the centrifugal fan impeller is prolonged;

2. the surfaces of the base plate, the blade group and the wheel cover are treated by a phosphating blackening process, and the surface of the shaft sleeve is treated by a phosphating blackening process, so that the centrifugal fan impeller is strong in heat resistance and corrosion resistance, not easy to rust and prolonged in service life.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, 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 embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.

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

FIG. 2 is a connection diagram of the bottom plate and the blade assembly of the present invention;

FIG. 3 is a schematic view of the wheel cover of the present invention;

fig. 4 is a schematic view of the shaft sleeve of the present invention;

fig. 5 is a schematic view of the screw of the present invention.

Description of reference numerals:

1 chassis, 2 blade groups, 3 wheel covers, 4 blades, 5 convex discs, 6 mounting grooves, 7 shaft sleeves, 8 first semicircular thread grooves, 9 second semicircular thread grooves, 10 screws, 11 first semicircular dismounting grooves, 12 second semicircular dismounting grooves, 13 positioning grooves, 14 positioning blocks, 15 key grooves and 16 shaft holes.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.

The first embodiment is as follows:

the utility model provides a centrifugal fan impeller as shown in figures 1-5, which comprises a chassis 1, a blade group 2 and a wheel cover 3, wherein the chassis 1 and the wheel cover 3 are arranged in parallel, the blade group 2 is arranged between the chassis 1 and the wheel cover 3, the chassis 1, the blade group 2 and the wheel cover 3 are integrally formed by casting, a convex disc 5 is arranged at the middle part of one side of the chassis 1 close to the wheel cover 3, the convex disc 5 is arranged at the middle part of the blade group 2, a mounting groove 6 is arranged at the middle part of the convex disc 5, the mounting groove 6 runs through the chassis 1, a shaft sleeve 7 is nested inside the mounting groove 6, the shaft sleeve 7 and the mounting groove 6 are both arranged in a conical shape, the shaft sleeve 7 is matched with the mounting groove 6, a shaft hole 16 is arranged at the middle part of the shaft sleeve 7, a first semicircular thread groove 8 is arranged at equal intervals on the inner wall of the mounting groove 6, the number of the first semicircular thread grooves 8 is three, the outer side wall of the shaft sleeve 7 is equidistantly provided with second semicircular thread grooves 9, the number of the second semicircular thread grooves 9 is three, the position of each second semicircular thread groove 9 is three, the position of each first semicircular thread groove 8 is corresponding to that of each second semicircular thread groove, a screw 10 is connected to a circular thread groove internal thread formed between each second semicircular thread groove 9 and each first semicircular thread groove 8, a first semicircular dismounting groove 11 is formed in the inner wall of the mounting groove 6, a second semicircular dismounting groove 12 is formed in the outer side of the shaft sleeve 7, the number of the second semicircular dismounting grooves 12 is the same as that of the first semicircular dismounting grooves 11, and the position of the second semicircular dismounting groove 12 is corresponding to that of the first semicircular dismounting grooves 11.

Further, in the above technical solution, the blade group 2 includes a plurality of blades 4, the number of the blades 4 is provided with a plurality of blades 4, the plurality of blades 4 are installed on the chassis 1, the plurality of blades 4 are uniformly distributed along the circumferential direction of the chassis 1, and one side of the plurality of blades 4, which is far away from the chassis 1, is connected to the wheel cover 3.

Furthermore, in the technical scheme, the convex disc 5 and the chassis 1 are integrally formed by casting, so that the convex disc 5 and the chassis 1 are high in connection strength, firm and stable in connection and long in service life.

Further, in the above technical scheme, constant head tank 13 has been seted up to the inner wall of mounting groove 6, the position that the lateral wall of axle sleeve 7 corresponds constant head tank 13 is provided with locating piece 14, locating piece 14 nestification is in constant head tank 13, is convenient for install axle sleeve 7 stable in mounting groove 6 for second semicircular thread groove 9 and second semicircular disassembly groove 12 on the axle sleeve 7 can align with first semicircular thread groove 8 and first semicircular disassembly groove 11 in mounting groove 6 effectively.

Furthermore, in the above technical scheme, the positioning block 14 and the shaft sleeve 7 are integrally formed by casting, so that the connection strength between the positioning block 14 and the shaft sleeve 7 is improved, the connection is stable and firm, and the damage is not easy to damage.

Further, in the above technical solution, a key slot 15 is formed in a position of the inner wall of the shaft sleeve 7 corresponding to the positioning block 14.

Furthermore, in the technical scheme, the surfaces of the chassis 1, the blade group 2 and the wheel cover 3 are treated by a phosphating blackening process, so that the chassis 1, the blade group 2 and the wheel cover 3 are strong in heat resistance and corrosion resistance, are not easy to rust, and the service life is prolonged.

Furthermore, in the technical scheme, the surface of the shaft sleeve 7 is treated by a phosphating and blackening process, so that the shaft sleeve 7 is strong in heat resistance and corrosion resistance, is not easy to rust and is prolonged in service life.

The implementation mode is specifically as follows: the chassis 1, the blade group 2 and the wheel cover 3 are integrally formed by casting, the structural strength is high, the connection between the chassis 1, the blade group 2 and the wheel cover 3 is stable and firm, the processing is relatively simple, the surfaces of the chassis 1, the blade group 2, the wheel cover 3 and the shaft sleeve 7 are treated by a phosphating and blackening process, so that the centrifugal fan impeller has strong heat resistance and corrosion resistance and is difficult to rust, the service life is prolonged, the shaft sleeve 7 is arranged in the mounting groove 6 on the convex disc 5 and connected by the screw 10, the mounting is simple and firm, meanwhile, the disassembly is convenient, when the shaft hole 16 on the shaft sleeve 7 is worn, only the shaft sleeve 7 needs to be replaced, the maintenance cost is reduced, the service life of the centrifugal fan impeller is prolonged, the implementation mode specifically solves the problems that the strength of the centrifugal fan impeller in the prior art is low, the processing is complex, and the shaft sleeve on the chassis is connected with the chassis by rivets, though the connection is firm, the disassembly is inconvenient, and the disassembly and the replacement are inconvenient after the damage.

Example two:

the utility model provides a centrifugal fan impeller as shown in figures 1-5, which comprises a chassis 1, a blade group 2 and a wheel cover 3, wherein the chassis 1 and the wheel cover 3 are arranged in parallel, the blade group 2 is arranged between the chassis 1 and the wheel cover 3, the chassis 1, the blade group 2 and the wheel cover 3 are fixed by welding, a convex disc 5 is arranged at the middle part of one side of the chassis 1 close to the wheel cover 3, the convex disc 5 is arranged at the middle part of the blade group 2, a mounting groove 6 is arranged at the middle part of the convex disc 5, the mounting groove 6 runs through the chassis 1, a shaft sleeve 7 is nested inside the mounting groove 6, the shaft sleeve 7 and the mounting groove 6 are both arranged in a cone shape, the shaft sleeve 7 is matched with the mounting groove 6, a shaft hole 16 is arranged at the middle part of the shaft sleeve 7, a first semicircular thread groove 8 is arranged at equal intervals on the inner wall of the mounting groove 6, the number of the first semicircular thread groove 8 is three, the utility model discloses a bearing support, including bearing support 7, the lateral wall of bearing support 7 has equidistant second semicircular thread groove 9 of seted up, the quantity of second semicircular thread groove 9 is provided with threely, and is three the position of second semicircular thread groove 9 is with three the position of first semicircular thread groove 8 is corresponding, the circular thread groove female connection who forms between second semicircular thread groove 9 and the first semicircular thread groove 8 has screw 10, first semicircular disassembly groove 11 has been seted up to the inner wall of mounting groove 6, second semicircular disassembly groove 12 has been seted up to the outside of bearing support 7, the quantity of second semicircular disassembly groove 12 is the same with the quantity of first semicircular disassembly groove 11, the position of second semicircular disassembly groove 12 is corresponding with the position of first semicircular disassembly groove 11.

The implementation mode is specifically as follows: through welded fastening between chassis 1, blading 2 and the wheel cap 3 for the connection between chassis 1, blading 2 and the wheel cap 3 is stable firm, and chassis 1, blading 2 and wheel cap 3 can be processed production respectively earlier, and rethread welded fastening is in the same place, and processing is simple, has improved production efficiency, and this embodiment has specifically solved the problem that the centrifugal fan impeller processing that exists is complicated among the prior art, and production efficiency is low.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

Claims

1. The utility model provides a centrifugal fan impeller, includes chassis (1), blade group (2) and wheel lid (3), its characterized in that: the novel wheel cover is characterized in that the base plate (1) and the wheel cover (3) are arranged in a relatively parallel mode, the vane group (2) is located between the base plate (1) and the wheel cover (3), the base plate (1), the vane group (2) and the wheel cover (3) are integrally machined and formed through casting or fixed through welding, a convex disc (5) is arranged in the middle of one side, close to the wheel cover (3), of the base plate (1), the convex disc (5) is located in the middle of the vane group (2), a mounting groove (6) is formed in the middle of the convex disc (5), the mounting groove (6) penetrates through the base plate (1), a shaft sleeve (7) is nested inside the mounting groove (6), the shaft sleeve (7) and the mounting groove (6) are both arranged to be conical shapes, the shaft sleeve (7) is matched with the mounting groove (6), a shaft hole (16) is formed in the middle of the shaft sleeve (7), first semicircular thread grooves (8) are formed in the inner wall of the mounting groove (6) at equal intervals, the number of the first semicircular thread grooves (8) is three, the outer side wall of the shaft sleeve (7) is provided with second semicircular thread grooves (9) at equal intervals, the number of the second semicircular thread grooves (9) is three, the positions of the three second semicircular thread grooves (9) correspond to the positions of the three first semicircular thread grooves (8), a screw (10) is connected with the inner thread of the circular thread groove formed between the second semicircular thread groove (9) and the first semicircular thread groove (8), the inner wall of the mounting groove (6) is provided with a first semicircular dismounting groove (11), a second semicircular dismounting groove (12) is arranged on the outer side of the shaft sleeve (7), the number of the second semicircular disassembly grooves (12) is the same as that of the first semicircular disassembly grooves (11), the position of the second semicircular dismounting groove (12) corresponds to the position of the first semicircular dismounting groove (11).

2. A centrifugal fan impeller according to claim 1, wherein: the blade group (2) includes blade (4), the quantity of blade (4) is provided with a plurality ofly, and is a plurality of install on chassis (1) blade (4), and is a plurality of blade (4) are along the circumference evenly distributed of chassis (1), and is a plurality of one side that chassis (1) were kept away from in blade (4) is connected with shroud (3).

3. A centrifugal fan impeller according to claim 1, wherein: the convex disc (5) and the chassis (1) are integrally formed by casting.

4. A centrifugal fan impeller according to claim 1, wherein: the inner wall of the mounting groove (6) is provided with a positioning groove (13), a positioning block (14) is arranged on the outer side wall of the shaft sleeve (7) corresponding to the positioning groove (13), and the positioning block (14) is embedded in the positioning groove (13).

5. A centrifugal fan impeller according to claim 4, wherein: the positioning block (14) and the shaft sleeve (7) are integrally formed by casting.

6. A centrifugal fan impeller according to claim 4, wherein: a key groove (15) is formed in the position, corresponding to the positioning block (14), of the inner wall of the shaft sleeve (7).

7. A centrifugal fan impeller according to claim 1, wherein: the surfaces of the chassis (1), the blade group (2) and the wheel cover (3) are treated by a phosphorization blackening process.

8. A centrifugal fan impeller according to claim 1, wherein: the surface of the shaft sleeve (7) is treated by a phosphorization blackening process.