CN202924818U

CN202924818U - Adjustable integrated impeller

Info

Publication number: CN202924818U
Application number: CN201220593537XU
Authority: CN
Inventors: 王淦; 张静; 侯红勋; 彭永臻
Original assignee: Beijing University of Technology
Current assignee: Beijing University of Technology
Priority date: 2012-11-12
Filing date: 2012-11-12
Publication date: 2013-05-08
Anticipated expiration: 2022-11-12

Abstract

The utility model relates to an impeller, and especially relates to an adjustable integrated impeller, composed of an impeller node board and a plurality of blades, wherein the blades are distributed at the bottom of the impeller node board, which is composed of an impeller shaft and a center board arranged on the outer side of the impeller shaft; the center board is provided with a hole site for connecting the blades; and the center line of the hole site and the radial line of the impeller form a blade caster angle alpha, which is 10-15 degrees. The adjustable integrated impeller disclosed by the utility model has the advantages of slightly reducing an aeration function of the impeller by increasing the caster angle alpha so as to enhance a plug flow effect, and weakening the plug flow effect of the impeller by reducing number of the blades to enhance the aeration function.

Description

Adjustable integrated impeller

Technical field

The utility model relates to a kind of impeller, especially a kind of adjustable integrated impeller.

Background technology

The first sentence of " national environmental protection " 12 " planning " introductory song clearly proposes the fundamental state policy that protection of the environment is China; and China's water environment situation allows of no optimist; water is basic natural resources and strategic economic resources; China's water resources is shortage totally; in the process of Fast Urbanization, shortage of water resources is more serious.Therefore, strengthening water pollution control, is current urgent task.Half biological process that adopt of sewage treatment process more, this technology key technology is the aeration of biological tank, inverted umbrella-shaped aeration machine is exactly the major equipment of aeration.

At present, the domestic and international surface aerating machine of inverted umbrella of producing is similar, and its crucial difference is aeration machine impeller.The structure of impeller and the operation condition that is complementary with it determine the performance performance of whole aerator, thereby have influence on the energy-saving and cost-reducing of sewage treatment process.All aeration machine impellers all complete in factory now, namely moulding fully, the impeller of this moulding can't be according to each Sewage Plant actual sewage treatment process demand, to get its best structure formation and rational running status, uniquely change wheel speed by frequency conversion, regulate plug-flow and aeration rate, this is unreasonable on Energy Saving Strategy.Therefore, the design of impeller is a new problem to meticulous, adjustable, integrated development.

Summary of the invention

For the weak point of above-mentioned technology, it is a kind of by increasing the angle of blade back rake angle that the utility model provides, and makes the aeration performance of impeller edge down and make the plug-flow effect obtain the adjustable integrated impeller that strengthens.

For achieving the above object, the utility model provides a kind of adjustable integrated impeller, consisted of by impeller gusset plate and a plurality of blade, described Leaf positional distribution is in the bottom of described impeller gusset plate, described impeller gusset plate is made of impeller shaft and the center plate that is arranged on the described impeller shaft outside, described center plate is provided be used to the position, hole that connects described blade, and the medullary ray of position, described hole and described impeller radial slit form blade back rake angle α, and the angle of described blade back rake angle α is 10 °～15 °.

The quantity of position, described hole is identical with the quantity of described blade.

The quantity of described blade is 8～12.

Described blade is made of blade web plate, flow deflector and vane plate, described flow deflector is antiparallelogram and is in the described vane plate of the symmetrical embedding of parabolic shape, the front end of described flow deflector and sea line form flow deflector elevation angle β, and described blade web plate is vertically welded on the middle position of described vane plate.

The angle of described flow deflector elevation angle β is 25 ° ~ 40 °.

Described vane plate is welded on the middle position of described blade web plate.

Described impeller is connected with reduction box by coupling shaft, and described reduction box is connected with motor by shaft coupling.

Described impeller diameter is 1200mm～3500mm.

Compared with prior art, the utlity model has following advantage:

1, impeller under identical rotating speed, by increasing the angle of blade back rake angle α, makes the aeration performance of impeller edge down and make the plug-flow effect obtain enhancing;

2, by reducing the blade quantity of impeller, the plug-flow effect decline aeration performance of impeller is enhanced;

3, the impeller diameter by adjusting, thus the load condition of impeller is changed significantly;

4, the utility model can adapt to the demand of different sewage treatment plant, realize best operational mode, reach energy-saving and cost-reducing purpose, integrated different structure as requested, to adapt to different occasion needs, bring into play its speciality, adjust flexibly mode by adopting, for sewage treatment process energy-saving and cost-reducing provides multiple strategy.

Description of drawings

Fig. 1 is front view of the present utility model;

Fig. 2 is the vertical view of Fig. 1;

Fig. 3 is the structure iron of impeller gusset plate in Fig. 1;

Fig. 4 is the vertical view of Fig. 3;

Fig. 5 is the side-view of Fig. 1 Leaf;

Fig. 6 is the vertical view of Fig. 5;

Fig. 7 is use state graph of the present utility model.

Main nomenclature is as follows:

1-impeller 2-coupling shaft 3-reduction box

4-motor 5-impeller gusset plate 6-blade

7-center plate 8-impeller shaft 9-impeller flange

10-blade web plate 11-flow deflector 12-vane plate

13-bolt 14-blades installation hole

Embodiment

Below in conjunction with drawings and Examples, the utility model is described in further detail.

To shown in Figure 6, the utility model provides a kind of adjustable integrated impeller as Fig. 1, and by impeller gusset plate 5 and a plurality of blades 6, impeller diameter is 1200mm～3500mm, by the impeller diameter of adjusting, thereby the load condition of impeller is changed significantly.The quantity of blade 6 is 8～12, and is evenly distributed in the bottom of impeller gusset plate 5, and blade 6 is vertically mounted on the bottom of impeller gusset plate 5 by bolt 13.Wherein, impeller gusset plate 5 is made of impeller shaft 8 and the center plate 7 that is set on impeller shaft 8 outsides, on the end face of the top of impeller shaft 8, impeller flange 9 is installed also.Be provided with on center plate 7 for the blades installation hole 14 that connects blade, the quantity in this blades installation hole is identical with the quantity of blade, a plurality of blades installations hole formation open holes group.The medullary ray in blades installation hole and the radial slit of impeller form blade back rake angle α, and wherein, the angle of blade back rake angle α is 10 °～15 °, the diameter that the blades installation hole is different with the different distance formation impeller in impeller shaft axle center.Impeller by increasing the angle of blade back rake angle α, makes the aeration performance of impeller edge down and make the plug-flow effect obtain enhancing under identical rotating speed.

Blade 6 is made of with vane plate 12 blade web plate 10, flow deflector 11, and vane plate 12 adopts the mode of vertical welding to be fixed on the middle position of blade web plate 10 bottoms, and vane plate 12 also is vertically mounted on the bottom of impeller gusset plate 5 by bolt 13.Flow deflector 11 is antiparallelogram, thereby along the crooked parabolic shape that forms of thickness of slab direction, and adopt symmetric mode to embed in vane plate, and the front end of flow deflector and sea line form flow deflector elevation angle β, and wherein, the angle of flow deflector elevation angle β is 25 ° ~ 40 °.By reducing the blade quantity of impeller, the plug-flow effect decline aeration performance of impeller is enhanced.

As shown in Figure 7, impeller 1 is connected with the output shaft of reduction box 3 by coupling shaft 2, and the input shaft of reduction box 3 is connected with motor 4 by shaft coupling, and electric motor driving is the impeller rotation after slowing down.

The utility model can adapt to the demand of different sewage treatment plant, realize best operational mode, reach energy-saving and cost-reducing purpose, integrated different structure as requested, to adapt to different occasion needs, bring into play its speciality, adjust flexibly mode by adopting, for sewage treatment process energy-saving and cost-reducing provides multiple strategy.

The above is only preferred embodiment of the present utility model, and is in order to limit the utility model, not all within spirit of the present utility model and principle, any modification of doing, is equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.

Claims

1. adjustable integrated impeller, consisted of by impeller gusset plate and a plurality of blade, described Leaf positional distribution is in the bottom of described impeller gusset plate, it is characterized in that, described impeller gusset plate is made of impeller shaft and the center plate that is arranged on the described impeller shaft outside, described center plate is provided be used to the position, hole that connects described blade, and the medullary ray of position, described hole and described impeller radial slit form blade back rake angle α, and the angle of described blade back rake angle α is 10 °～15 °.

2. adjustable integrated impeller according to claim 1, is characterized in that, the quantity of position, described hole is identical with the quantity of described blade.

3. adjustable integrated impeller according to claim 2, is characterized in that, the quantity of described blade is 8～12.

4. adjustable integrated impeller according to claim 3, it is characterized in that, described blade is made of blade web plate, flow deflector and vane plate, described flow deflector is antiparallelogram and is in the described vane plate of the symmetrical embedding of parabolic shape, the front end of described flow deflector and sea line form flow deflector elevation angle β, and described blade web plate is vertically welded on the middle position of described vane plate.

5. adjustable integrated impeller according to claim 4, is characterized in that, the angle of described flow deflector elevation angle β is 25 ° ~ 40 °.

6. adjustable integrated impeller according to claim 5, is characterized in that, described vane plate is welded on the middle position of described blade web plate.

7. arbitrary described adjustable integrated impeller according to claim 1 to 6, is characterized in that, described impeller is connected with reduction box by coupling shaft, and described reduction box is connected with motor by shaft coupling.

8. adjustable integrated impeller according to claim 6, is characterized in that, described impeller diameter is 1200mm～3500mm.