CN207246104U - A kind of centrifugal air compressor impeller - Google Patents

Abstract

A kind of centrifugal air compressor impeller is the utility model is related to, it includes the boss plate of arch and blade, and the blade is fixedly connected on the outer surface of boss plate, it is characterised in that：The centre of the boss plate is equipped with the bearing holder (housing, cover) integral with it, and the top surface of bearing holder (housing, cover) is equipped with some holes passed through for latch, and the number of hole is 4~8；The blade is in distorted shape from top to bottom, the vaned geomery of institute, distortion angle all same, the angle all same of the suction surface of blade and the plate face composition of boss plate, and is obtuse angle.The centrifugal air compressor Impeller Machining process is simple, and the center of gravity of impeller and axle center more they tend to overlap, and when rotation is more steady.

Description

A kind of centrifugal air compressor impeller

Technical field

Turbomachinery is the utility model is related to, more particularly to a kind of centrifugal air compressor impeller.

Background technology

As China in national economy such as space division, metallurgy, building materials, petrochemical industry, electric power, sewage disposals gives priority to production In industry, the industrial structure develops to energy conservation and environmental protection direction, its industry equipment also gradually develops to energy conservation and environmental protection direction.Therefore, to work Industry centrifugal compressor is proposed towards high efficiency, low flow rate, service life is long, for ease of maintenaince the direction such as installation is developed New demand.

A kind of centrifugal type air has been proposed in the applicant in the Chinese patent of Application No. 201420568926.6 The impeller of compressor, it includes the boss plate of arch and blade group, and the blade group is fixedly connected on the outer of the boss plate of arch On surface, the bearing holder (housing, cover) integral with it is equipped among the boss plate, the blade group includes whole lamina and splitterr vanes, described The quantity of whole lamina is 12, and the quantity of splitterr vanes is 12, and whole lamina and splitterr vanes are in distorted shape from top to bottom, full leaf Piece and splitterr vanes are equidistant is separated by the outer surface for being fixed by welding in boss plate, the size of the splitterr vanes is full leaf The half of piece, the shape of splitterr vanes is identical with the shape of the latter half of whole lamina, the suction surface of the whole lamina with The angle that the plate face of boss plate is formed is obtuse angle.

The blade of the impeller of above-mentioned centrifugal compressor includes whole lamina and splitterr vanes, and splitterr vanes are the one of whole lamina Half, which causes Impeller Machining difficulty to become larger, and the center of gravity of impeller entirety cannot be overlapped with the axle center of impeller, and when use easily produces Raw vibration.Secondly, impeller using when be to be connected by nut with main shaft, under long-term high-speed rotation, the screw thread of nut can be by Damage, causes impeller to be fixed insecure, influences wheel rotation efficiency.

Utility model content

The purpose of this utility model is that being directed to problems of the prior art, it is related to a kind of more rational leaf of structure Wheel construction, can increase the service life of impeller, reduce vibration during wheel rotation.

For the attainment of one's purpose, technical solution provided by the utility model is：

A kind of centrifugal air compressor impeller that the utility model is related to, it includes the boss plate of arch and blade, institute The blade stated is fixedly connected on the outer surface of boss plate, it is characterised in that：The centre of the boss plate is equipped with and its one Bearing holder (housing, cover), the top surface of bearing holder (housing, cover) are equipped with some holes passed through for latch, and the number of hole is 4~8；The blade from Top to bottm is in distorted shape, the vaned geomery of institute, distortion angle all same, the suction surface of blade and the plate face structure of boss plate Into angle all same, and be obtuse angle.

Preferably, the hole is equally spaced using the axle center of bearing holder (housing, cover) as the center of circle according to circumference, institute's hole it is straight Footpath all same.After the completion of the impeller hub plate and blade processing, then by measuring and calculation, draw impeller again and axle center Whether it is completely superposed, then according to the depth for determining each hole with the amount of the offset in axle center again, the aperture of each hole is identical, But depth can be different, the center of gravity of impeller can be so finely adjusted, the center of gravity of impeller and axle center is tended to overlapping state.

Preferably, the inner of the blade being fixed on boss plate and outer end are formed outside blade inner circle and blade respectively Round, diameter of a circle is the outer diameter of a circle 80% of blade in blade.

Using technical solution provided by the utility model, compared with prior art, have the advantages that：

The blade for the centrifugal compressor impeller that the utility model is related to is using shape, size and degreeof tortuosity all same Blade, its difficulty of processing is lower, and processing quality is guaranteed；Secondly in bearing top surface drilling hole after processing, impeller is re-started Micro-adjustment, makes the center of gravity of impeller and axle center tend to overlap, and when wheel rotation is with small vibration., can be by inserting when impeller and main shaft assemble Pin insertion hole hole, latch are fixed with main shaft again, the moment of torsion bigger that impeller is subject to, and are rotated more steady.

Brief description of the drawings

Fig. 1 is the structure diagram of the utility model impeller；

Fig. 2 is the side view of the utility model impeller；

Fig. 3 is the utility model impeller use state diagram.

Illustrate：11 boss plates, 12 blades, 13 bearing holder (housing, cover)s, 14 holes, 20 main shafts, 30 latches, 40 nuts.

Embodiment

To further appreciate that the content of the utility model, the utility model is described in detail in conjunction with the embodiments, it is real below Apply example to be used to illustrate the utility model, but be not intended to limit the scope of the present invention.

With reference to shown in attached drawing 1 or 2, a kind of centrifugal air compressor impeller that the utility model is related to includes the wheel of arch Hub plate 11 and blade 12, the blade 12 are fixedly connected on the outer surface of boss plate 11, and blade 12 is from top to bottom in distortion The angle that shape, the vaned geomery of institute, distortion angle all same, the suction surface of blade and the plate face of boss plate are formed is homogeneous Together, and it is obtuse angle.The inner of blade 12 and outer end form blade inner circle respectively and blade is cylindrical, and diameter of a circle is leaf in blade The outer diameter of a circle 80% of piece.

The centre of the boss plate 11 is equipped with the bearing holder (housing, cover) 13 integral with it, and the top surface of bearing holder (housing, cover) is equipped with eight holes, should Hole is the formation that drills again after boss plate 11, bearing holder (housing, cover) 13 and blade 12 machine, and the hole 14 is with bearing The axle center of set is equally spaced for the center of circle according to circumference, and the aperture of hole 14 is identical, the center of gravity and axle center that depth can be according to impeller Deviation situation calculated and finally determined, after the completion of eight holes 14 drill, the center of gravity of impeller and axle center can be made to tend to weight Close.

With reference to shown in attached drawing 3, then which will insert in use, impeller to be integrally set in the end of main shaft 20 first Pin 30 is set in the end of main shaft 20, and latch is entirely insertable in hole 14, then screws on nut 40 in top, is used for Impeller and latch 30 are fixed on main shaft 20.During main axis, latch applies a torsion to impeller, is that wheel rotation is more flat Surely, while the active force of nut 40 is reduced, can effectively avoid the thread damage of nut 40, its service life is increased with this.

The utility model is described in detail above in association with embodiment, but the content be only the utility model compared with Good embodiment, it is impossible to be construed as limiting the scope of the utility model.It is made according to the scope of application of this utility model All the changes and improvements etc., should all still fall within the patent covering scope of the utility model.

Claims (3)

1. a kind of centrifugal air compressor impeller, it includes the boss plate of arch and blade, and the blade is fixedly connected on On the outer surface of boss plate, it is characterised in that：The centre of the boss plate is equipped with the bearing holder (housing, cover) integral with it, the top surface of bearing holder (housing, cover) Equipped with some holes passed through for latch, the number of hole is 4~8；The blade is in distorted shape from top to bottom, is owned The angle all same that the geomery of blade, distortion angle all same, the suction surface of blade and the plate face of boss plate are formed, and For obtuse angle.

2. centrifugal air compressor impeller according to claim 1, it is characterised in that：The hole is with bearing holder (housing, cover) Axle center is equally spaced for the center of circle according to circumference, the diameter all same of institute's hole.

3. centrifugal air compressor impeller according to claim 1, it is characterised in that：It is described to be fixed on boss plate The inner of blade and outer end form blade inner circle respectively and blade is cylindrical, and diameter of a circle is the outer diameter of a circle of blade in blade 80%.