CN213981332U

CN213981332U - Centrifugal fan impeller structure

Info

Publication number: CN213981332U
Application number: CN202022272203.XU
Authority: CN
Inventors: 冯永国
Original assignee: Shanxi Tengtai Environmental Protection Technology Co ltd
Current assignee: Shanxi Tengtai Environmental Protection Technology Co ltd
Priority date: 2020-10-13
Filing date: 2020-10-13
Publication date: 2021-08-17
Anticipated expiration: 2030-10-13

Abstract

The utility model discloses a centrifugal fan impeller structure, which relates to the technical field of fans, and comprises a back plate, a plurality of blades, a front plate, a motor shell and a motor shaft, wherein one end of each blade is welded with the surface of the back plate, the other end of each blade is connected with the peripheral side of the motor shell, each blade comprises a blade body and a connecting block, the connecting blocks are welded on the surface of the blade body, the front plate is connected with the blades through the connecting blocks, the back plate is connected with the front plate through the blades, the motor shaft is arranged on the surface in the motor shell, the front plate comprises a front plate body and first bolts, a plurality of first threaded through holes are arrayed on the surface of the front plate body, and the first bolts are respectively matched with the first threaded through holes in a rotating way, the centrifugal fan impeller structure avoids the structural design of an integral type by arranging the first bolts to connect the blades and the front plate through the bolts, the assembled structure makes production more convenient, has practiced thrift manufacturing cost.

Description

Centrifugal fan impeller structure

Technical Field

The utility model relates to a fan technical field, in particular to centrifugal fan impeller structure.

Background

The centrifugal fan is a driven fluid machine which increases the pressure of gas and discharges the gas by means of input mechanical energy, the centrifugal fan is widely used for ventilation, dust exhaust and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, impellers are key parts in the centrifugal fan, and how the performance of one centrifugal fan depends on the structure of the impeller to a great extent.

The existing impeller is mostly of an integrated structure of a front disc, blades and a rear disc, the impeller of the structure is complex to produce and inconvenient to maintain, and a balance block in the impeller is mostly directly welded on the rear disc, so that the impeller is not convenient to replace and maintain, and the centrifugal fan impeller structure is provided.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main objective is providing a centrifugal fan impeller structure, through increasing its corresponding functional structure, effectively cooperate service environment and user demand, can effectively solve current impeller and mostly be the integral type structure of front bezel, blade and back dish, the impeller of this kind of structure is produced very complicatedly, and it is also inconvenient that the maintenance is got up to the balancing piece in the impeller is mostly the direct welding on the back dish, is not convenient for change maintenance scheduling problem.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a centrifugal fan impeller structure, includes back dish, blade, preceding dish, motor housing and motor shaft, and is a plurality of blade one end all with a back dish surface weld, a plurality of the blade other end all is connected with motor housing week side, the blade includes blade body and connecting block, the connecting block welds in blade body surface, preceding dish passes through the connecting block with the blade and is connected, the back dish passes through the blade with preceding dish and is connected, the motor shaft is installed in the inside surface of motor housing, preceding dish includes preceding dish body and first bolt, preceding dish body surface array has a plurality of first screw through-holes, and is a plurality of first bolt is respectively with a plurality of first screw through-hole normal running fit.

Preferably, the back plate includes the back plate body and balancing piece mounting hole, and is a plurality of the balancing piece mounting hole all installs in back plate body one surface, and through setting up the balancing piece mounting hole, the balancing piece passes through bolt-up's mode and installs on the back plate, and after fan wheel dynamic balance imbalance, only need dismantle former balancing piece, change new balancing piece, can make fan wheel resume dynamic balance, guarantee the normal operating of fan to the defect of rewelding the balancing piece has been avoided.

Preferably, the blade still includes the boss, boss one end and motor housing week side are connected, the boss other end and blade body side surface are connected, through setting up the boss, have consolidated being connected between blade and the motor housing, have improved the stability of impeller structure effectively.

Preferably, the front disc further comprises a supporting ring, the supporting ring is connected with the side surface of the front disc body, the blades and the front disc are connected through bolts by arranging the first bolts, the integral structural design is avoided, the assembly type structure enables production to be more convenient, and production cost is saved.

Preferably, motor housing includes motor housing body, enclosing cover and second bolt, the enclosing cover is connected with a motor housing body surface, enclosing cover surface array has a plurality of second screw thread through-holes, and is a plurality of the second bolt respectively with a plurality of second screw thread through-holes normal running fit, through setting up the second bolt, has strengthened the stability between motor housing and the enclosing cover, the installation in the dismantlement of the motor of being convenient for.

Preferably, the motor shaft includes motor shaft body and mount pad, the mount pad welds in the inside surface of motor housing, motor shaft body one end is connected with the mount pad, is favorable to the installation of motor.

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

the utility model discloses in, through setting up the balancing piece mounting hole, the balancing piece passes through the mode of bolt-up and installs on the back dish, after fan wheel dynamic balance imbalance, only needs to dismantle former balancing piece, changes new balancing piece, can make fan wheel resume dynamic balance, guarantees the normal operating of fan to the defect of rewelding the balancing piece has been avoided.

The utility model discloses in, through setting up first bolt, couple together blade and front bezel through bolted connection, avoided the structural design of integral type, the structure of assembled makes production more convenient, has practiced thrift manufacturing cost.

Drawings

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

fig. 2 is a schematic front view of the impeller structure of the centrifugal fan of the present invention;

FIG. 3 is a schematic cross-sectional view of the impeller structure of the centrifugal fan at the position A-A in FIG. 2;

fig. 4 is a schematic sectional view of the impeller structure diagram 2 of the centrifugal fan at the position B-B of the present invention.

In the figure: 100. a rear disc; 101. a balance block mounting hole; 200. a blade; 201. connecting blocks; 203. a reinforcing block; 300. a front plate; 301. a support ring; 302. a first bolt; 400. a motor housing; 401. an outer cover; 402. a second bolt; 500. a motor shaft; 501. and (7) mounting a seat.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The first embodiment is as follows:

please refer to fig. 1-4, the utility model discloses a centrifugal fan impeller structure, including back plate 100, blade 200, front bezel 300, motor housing 400 and motor shaft 500, a plurality of blade 200 one end all with a back plate 100 surface welding, a plurality of blade 200 other end all with motor housing 400 side connection all, blade 200 includes blade body and connecting block 201, connecting block 201 welds in blade body a surface, front bezel 300 passes through connecting block 201 with blade 200 and is connected, back plate 100 passes through blade 200 with front bezel 300 and is connected, motor shaft 500 is installed in the inside surface of motor housing 400, front bezel 300 includes front bezel body and first bolt 302, a front bezel body surface array has a plurality of first screw through-holes, a plurality of first bolt 302 respectively with a plurality of first screw through-holes normal running fit.

Further, the back plate 100 includes the back plate body and balancing piece mounting hole 101, and a plurality of balancing piece mounting holes 101 are all installed in back plate body one surface, and through setting up balancing piece mounting hole 101, the balancing piece passes through the mode of bolt-up and installs on back plate 100, after fan wheel dynamic balance imbalance, only need dismantle former balancing piece, change new balancing piece, can make fan wheel resume dynamic balance, guarantee the normal operating of fan to the defect of rewelding the balancing piece has been avoided.

Further, the blade 200 further comprises a reinforcing block 203, one end of the reinforcing block 203 is connected with the peripheral side face of the motor shell 400, the other end of the reinforcing block 203 is connected with the side face of the blade body, and by arranging the reinforcing block 203, the connection between the blade 200 and the motor shell 400 is reinforced, and the stability of the impeller structure is effectively improved.

Further, the front disc 300 further comprises a supporting ring 301, the supporting ring 301 is connected with the side surface of the front disc body, the blades 200 are connected with the front disc 300 through bolts by arranging the first bolts 302, the integral structure design is avoided, the assembly structure enables production to be more convenient, and production cost is saved.

Further, motor housing 400 includes motor housing body, enclosing cover 401 and second bolt 402, and enclosing cover 401 and motor housing body surface connection, and an enclosing cover 401 surface array has a plurality of second screw thread through-holes, and a plurality of second bolts 402 respectively with a plurality of second screw thread through-holes normal running fit, through setting up second bolt 402, has strengthened the stability between motor housing 400 and enclosing cover 401, the installation in the dismantlement of the motor of being convenient for.

Further, the motor shaft 500 includes a motor shaft body and a mounting seat 501, the mounting seat 501 is welded on one surface inside the motor housing 400, and one end of the motor shaft body is connected with the mounting seat 501, which is beneficial to the installation of the motor.

Example two:

referring to fig. 1-4, the present invention relates to an impeller structure of a centrifugal fan, the impeller adopts an assembled structure, the blades 200 are welded on the back plate 100, one end of the blades 200 is reinforced and connected with the motor housing 400 through the reinforcing block 203, the back plate 100 is connected with the blades 200 through the first bolts 302, such a connection mode is convenient for disassembly and assembly, wherein the balance block is installed on the back plate 100 through the balance block installation holes 101 in a bolt connection mode.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a centrifugal fan impeller structure, includes back dish (100), blade (200), preceding dish (300), motor housing (400) and motor shaft (500), its characterized in that: a plurality of blade (200) one end all with a back plate (100) surface welding, a plurality of blade (200) other end all is connected with motor housing (400) side all around, blade (200) include blade body and connecting block (201), connecting block (201) weld in blade body one surface, preceding dish (300) are connected through connecting block (201) with blade (200), back plate (100) are connected through blade (200) with preceding dish (300), motor shaft (500) are installed in motor housing (400) inside one surface, preceding dish (300) are including preceding dish body and first bolt (302), a preceding dish body surface array has a plurality of first screw through-holes, and is a plurality of first bolt (302) are respectively with a plurality of first screw through-hole normal running fit.

2. The centrifugal fan impeller structure according to claim 1, wherein: the rear disc (100) comprises a rear disc body and balance block mounting holes (101), and the balance block mounting holes (101) are all mounted on one surface of the rear disc body.

3. The centrifugal fan impeller structure according to claim 1, wherein: the blade (200) further comprises a reinforcing block (203), one end of the reinforcing block (203) is connected with the side surface of the motor shell (400), and the other end of the reinforcing block (203) is connected with the side surface of the blade body.

4. The centrifugal fan impeller structure according to claim 1, wherein: the front disc (300) further comprises a support ring (301), and the support ring (301) is connected with the side surface of the front disc body.

5. The centrifugal fan impeller structure according to claim 1, wherein: motor housing (400) includes motor housing body, enclosing cover (401) and second bolt (402), enclosing cover (401) and motor housing body surface are connected, enclosing cover (401) surface array has a plurality of second screw thread through-holes, and is a plurality of second bolt (402) respectively with a plurality of second screw thread through-holes normal running fit.

6. The centrifugal fan impeller structure according to claim 1, wherein: the motor shaft (500) comprises a motor shaft body and a mounting seat (501), the mounting seat (501) is welded on one surface inside the motor shell (400), and one end of the motor shaft body is connected with the mounting seat (501).