CN110966251A

CN110966251A - Fan impeller

Info

Publication number: CN110966251A
Application number: CN201911124761.7A
Authority: CN
Inventors: 董飞; 李忠; 陈阳
Original assignee: Suzhou Flanders Environmental Protection Equipment Co Ltd
Current assignee: Suzhou Flanders Environmental Protection Equipment Co Ltd
Priority date: 2019-11-18
Filing date: 2019-11-18
Publication date: 2020-04-07

Abstract

The invention relates to a fan impeller, which comprises a driving shaft and an impeller, wherein the driving shaft and the impeller are fixedly connected through an iron disc, the iron disc is of a shoulder tubular structure, one end part of the iron disc is fixedly connected with a bottom plate at the end part of the impeller, the iron disc and the driving shaft are fixedly connected through a key groove structure, a guide plate for isolating air inside the impeller is installed on the outer wall of the iron disc penetrating into the impeller, the guide plate and the bottom plate of the impeller are coated with anti-corrosion sealing through glass fiber reinforced plastic, the iron disc is an intermediate part, one end of the iron disc is fixedly connected with the bottom plate and sealed through the guide plate, the other end of the iron disc and the driving shaft are sealed through glass fiber reinforced plastic double. Compared with the prior art, the invention has the beneficial effects that: the invention provides a fan impeller, which ensures that a driving shaft and the impeller are connected in a sealing way by arranging a guide plate, a glass fiber reinforced plastic coating seal and a double-sided packing seal and then sealing, and avoids the influence on the environment caused by the influence on the work of a fan due to the gas corrosion and corrosive gas leakage formed at the joint.

Description

Fan impeller

Technical Field

The invention relates to the technical field of industrial fans, in particular to a fan impeller.

Background

The fan is a driven fluid machine which increases the pressure of gas and discharges the gas by means of input mechanical energy. The blower is a Chinese habit abbreviation for gas compression and gas conveying machinery, and the blower generally comprises a ventilator, a blower and a wind driven generator. Fans are widely used for ventilation, dust exhaust and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, and for ventilation and draught of boilers and industrial furnaces and kilns; cooling and ventilation in air conditioning equipment and household appliances; drying and selecting grain, wind tunnel wind source and air cushion boat inflating and propelling. The fan forms negative pressure in the cavity when rotating at high speed to play a role in ventilation. However, the fan impeller needs to be driven by a driving shaft, when the sealing of the joint of the driving shaft and the impeller is poor, an air passage is formed inside the joint, the impeller shakes and erodes when running at high speed, the service life of the fan is shortened, and the problem in the industry is always solved.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides the fan impeller, which ensures that the connection between the driving shaft and the impeller is in sealing connection by arranging the front seal of the guide plate and the rear seal of the sealing gasket, and avoids the influence of an air passage formed at the connection part on the work of the fan.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the utility model provides a fan impeller, includes drive shaft and impeller, drive shaft and impeller pass through the iron disc and connect fixedly, the iron disc is for taking shoulder tubular structure, a tip of iron disc and the bottom plate fixed connection of impeller tip, and it is fixed that iron disc and drive shaft pass through keyway structural connection, it installs the guide plate that is used for keeping apart the inside air of impeller on the iron disc outer wall of impeller to penetrate, the bottom plate welded seal of guide plate and impeller, the iron disc is the intermediate member, and one end is connected fixedly and is sealed through the guide plate with the bottom plate, and the other end is sealed with the drive shaft, realizes that the junction of drive shaft and impeller is sealed.

Further, still install a sealed dish on the terminal surface that impeller one side was kept away from to the iron plate, be equipped with the screw hole on the sealed dish, also be equipped with the screw hole on the iron plate that corresponds sealed dish screw hole, it is fixed with sealed dish, iron plate and bottom plate connection through the screw, one side of sealed dish still is connected with the cover, sealed dish and cover pass through bolted connection fixed, cup jointed sealed the pad in the drive shaft between cover and the sealed dish, when cover and sealed dish pass through the bolt-up, sealed the drive shaft that closely laminates of deformation under pressure, a side laminating of sealed dish is on the iron plate and through screw fixed connection, and another terminal surface of sealed dish is sealed through the junction that realizes iron plate and drive shaft with cover and sealed cooperation of pad, and the fine double-end that has realized the iron plate is sealed.

The junction of lining lid and sealed pad is equipped with the annular that is used for sealed embedding under the pad natural state, sealed dish and sealed pad junction also is equipped with the annular that is used for sealed embedding under the pad natural state, the sealed pad atress deformation of sealed pad and extrusion back of lining lid and sealed dish centre gripping fills the gap that forms between lining lid, sealed dish and the drive shaft, guarantees sealed effect.

Preferably, the degree of depth of annular is one fifth of sealed pad thickness, receives extrusion deformation back because the annular is outer along the clearance less in the sealed embedding annular, and the annular is interior along the clearance great, helps sealed pad entering annular inner edge to fill, improves sealed effect.

Preferably, the sealing gasket is a Teflon sealing gasket with good sealing performance.

Furthermore, one end of the driving shaft, which is far away from the impeller, is sleeved with a bearing used for stable rotation of the driving shaft, the outer edge of the bearing is fixedly connected with the outer cavity of the impeller, efficient operation of the impeller is guaranteed, one end part of the driving shaft, which is far away from the impeller, is matched and connected with a gearbox of a driving machine, and the gearbox is driven by the driving machine of the fan.

Compared with the prior art, the invention has the beneficial effects that: the invention provides a fan impeller, which ensures that a driving shaft and the impeller are connected in a sealing way by arranging a front seal of a guide plate and a rear seal of a sealing gasket, and avoids the influence of an air passage formed at the joint on the work of a fan.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is an enlarged view of the junction of the drive shaft and impeller of the present invention.

In the figure: 1. the device comprises a driving shaft, 2, an impeller, 3, a bottom plate, 4, a guide plate, 5, an iron disc, 6, a double-sided sealing disc, 7, a threaded hole, 8, a positioning bolt, 9, a sealing pad, 10, a ring groove, 11 and a sealing disc.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

Example one

As shown in fig. 1, the invention designs a fan impeller, which comprises a driving shaft 1 and an impeller 2, wherein the driving shaft 1 and the impeller 2 are fixedly connected through an iron disc 5, the iron disc 5 is of a shoulder-tube-shaped structure, one end of the iron disc 5 is fixedly connected with a bottom plate at the end of the impeller, the iron disc 5 and the driving shaft 1 are fixedly connected through a key groove structure, a guide plate 4 for isolating air inside the impeller is installed on the outer wall of the iron disc penetrating into the impeller, the guide plate 4 and the bottom plate 3 of the impeller 2 are welded and sealed, the iron disc 5 is an intermediate piece, one end of the intermediate piece is fixedly connected with the bottom plate 3 and sealed through the guide plate 4, and the other end of the intermediate piece is sealed with the driving shaft 1, so.

Furthermore, a sealing disk 11 is also arranged on the end surface of the iron disk 5 far away from the impeller 2, a threaded hole 7 is arranged on the sealing disk 11, the iron disc 5 corresponding to the sealing disc threaded hole is also provided with a threaded hole 7, the sealing disc 11, the iron disc 5 and the bottom plate 3 are fixedly connected through screws, one side of the sealing disk 11 is also connected with a lining cover 6, the sealing disk 11 and the lining cover 6 are fixedly connected through bolts, a sealing gasket 9 is sleeved on the driving shaft between the lining cover 6 and the sealing disk 11, when the lining cover and the sealing disk are screwed down by bolts, the sealing gasket 9 is pressed to deform and is tightly attached to the driving shaft 1, one side face of the sealing disc 11 is attached to the iron disc and fixedly connected with the iron disc through screws, the other end face of the sealing disc 11 is matched with the lining cover 6 and the sealing gasket 9 to achieve sealing of the joint of the iron disc 5 and the driving shaft 1, and double-end sealing of the iron disc is achieved well.

The junction of lining lid 6 and sealed pad 9 is equipped with the annular 10 that is used for sealed pad 9 natural state to imbed down, sealed pad 11 also is equipped with the annular 10 that is used for sealed pad 9 natural state to imbed down with sealed pad 9's junction, lining lid 6 and the sealed pad 11 centre gripping of sealed pad 9 and extrusion back sealed pad atress deformation fill the gap that forms between lining lid, sealed pad and the drive shaft, guarantee sealed effect.

Preferably, the degree of depth of annular groove 10 is one fifth of sealed pad thickness, and 8 embedding sealed pads receive extrusion deformation in the annular groove because the annular groove is outer along the clearance less, and the annular is interior along the clearance great, help sealed pad to get into the annular and follow the packing in, improve sealed effect.

Preferably, the gasket 9 is a teflon gasket having good sealing performance.

Furthermore, one end of the driving shaft 1, which is far away from the impeller, is sleeved with a bearing used for stable rotation of the driving shaft, the outer edge of the bearing is fixedly connected with the outer cavity of the impeller, efficient operation of the impeller is guaranteed, one end part of the driving shaft, which is far away from the impeller, is matched and connected with a gearbox of a driving machine, and the gearbox is driven by the driving machine of a fan.

When the fan outer cavity is installed after the driving shaft 1 and the impeller 2 are assembled through the above description, the outer cavity is welded and fixed to the bearing joint on the driving shaft or the outer cavity is detachably connected through a bolt connection mode, when the driving shaft drives the impeller to rotate at a high speed after the assembly is completed, the joint of the driving shaft 1 and the impeller 2 is completely sealed relatively, the driving shaft and the impeller are of an integrated structure, and the phenomenon that the impeller 2 is damaged due to vibration caused by the fact that an air passage is formed in the joint is avoided.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The fan impeller is characterized by comprising a driving shaft and an impeller, wherein the driving shaft and the impeller are fixedly connected through an iron disc, the iron disc is of a cylindrical structure with a shoulder, one end part of the iron disc is fixedly connected with a bottom plate at the end part of the impeller, and the iron disc and the driving shaft are fixedly connected through a key groove structure;

and a guide plate for isolating the air in the impeller is arranged on the outer wall of the iron plate penetrating into the impeller, and the guide plate and the bottom plate of the impeller are coated with the glass fiber reinforced plastic for anticorrosion sealing.

2. The blower impeller according to claim 1, wherein a double-sided sealing disk is further installed on an end surface of the iron disk on a side away from the impeller, the sealing disk is provided with a threaded hole, and the sealing disk, the iron disk and the bottom plate are fixedly connected by a screw.

3. The blower impeller of claim 1, wherein a liner cover is further attached to one side of the seal disk, and the seal disk and the liner cover are fixed by bolting.

4. The blower impeller according to claim 3, wherein a gasket is sleeved on the drive shaft between the double-sided sealing discs consisting of the lining cover and the sealing disc, and the gasket is pressed and deformed to closely fit the drive shaft when the lining cover and the sealing disc are screwed down by the bolts.

5. The fan impeller of claim 4, wherein the joint of the double-sided sealing disk and the sealing gasket, which is composed of the side cover and the lining cover, is provided with an annular groove for embedding in a natural state of the sealing gasket, the joint of the sealing disk and the sealing gasket is also provided with an annular groove for embedding in a natural state of the sealing gasket, and the lining cover and the sealing disk clamp the sealing gasket and press the sealing gasket to deform under stress to fill gaps formed between the lining cover, the sealing disk and the drive shaft.

6. The fan wheel according to claim 5, wherein the depth of the annular groove is one fifth of the thickness of the seal.

7. The blower wheel according to claim 4, wherein the gasket is a Teflon gasket with good sealing properties.

8. The fan wheel as claimed in claim 1, wherein the end of the drive shaft remote from the wheel has a bearing for stabilizing rotation of the drive shaft.

9. The fan wheel of claim 1 wherein an end of the drive shaft remote from the wheel is cooperatively engaged with a gearbox of a drive machine.