CN102583720A

CN102583720A - Deep-water type down-umbrella aerator impeller

Info

Publication number: CN102583720A
Application number: CN2012100417858A
Authority: CN
Inventors: 周文忠; 王淦; 侯红勋; 郑士良; 朱甲华
Original assignee: Anhui Guoshen Environment Protection And Energy Saving Science And Technology Co
Current assignee: Cecep Guozhen Environmental Protection Technology Co.,Ltd.
Priority date: 2012-02-23
Filing date: 2012-02-23
Publication date: 2012-07-18
Anticipated expiration: 2032-02-23
Also published as: CN102583720B

Abstract

The invention discloses a deep-water type down-umbrella aerator impeller. The deep-water type down-umbrella aerator impeller comprises an aerator impeller and an agitation impeller, wherein the agitation impeller is coaxially installed below the aerator impeller; the aerator impeller is installed at the lower end of a transmission shaft of a reduction box; the reduction box is driven by a motor; the aerator impellor comprises a center plate vertically connected to an impeller shaft; a plurality of aerator blades are arranged on the center plate; the upper ends of the aerator blades are obliquely connected with a pressurized-water plate; the lower end of the pressurized-water plate is connected to the center plate; a caster angle alpha is formed between each aerator blade and the radial direction of the impeller and a water-facing angle beta is formed between each aerator blade and the axial direction of the impeller; the lower end of each aerator blade is respectively collected in a base conical table; and the center plate, the aerator blades and the pressurized-water plate form the water-ejecting outlet of the impeller. By using the deep-water type down-umbrella aerator impeller provided by the invention, the water body flow and hydraulic jump height can be effectively improved, the agitated water is ejected through the water-ejecting outlet, and the formed water surface is fresher and can fully contact with air, thus reaching the aeration effect maximally; meanwhile, the agitation impeller can act as an axial flow effect, so that a liquid at the bottom of a deep groove can form an upward flow state and the bottom sludge can be prevented from settling.

Description

Deep water type inverted umbrella-shaped aeration machine impeller

Technical field

The present invention relates to the environmental protection equipment in the WWT, specifically belonging to is a kind of deep water type inverted umbrella-shaped aeration machine impeller.

Background technology

Along with the propelling of industrial expansion and urbanization process, environmental problem is very outstanding, and particularly water pollutes, and brings more stern challenge to the China that originally has been water resources shortage, therefore, strengthens water pollution control, is current urgent task.Biological process technology is adopted in WWT mostly, and the aeration that this technology key technology is a biological tank is oxygenation.In addition, because the anxiety of land resources, to the deep channel type development, this takes into account stirring action with regard to requiring aerator to biological tank in aeration, prevents the sludge settling of zanjon bottom.Vertical inversed umbrella type surface aeration machine with operation the time do not hang dirty, do not stop up, and the strong advantage of oxygenation capacity obtains widespread use in the industry.

At present; The vertical surface aeration machine of being produced both at home and abroad of falling the umbrella; The water body that impeller is dished out when operation does not fully contact with air; Fail to reach good aeration effect, tracing it to its cause is that the structure formation of aeration machine impeller is unreasonable, the effect that stir the more difficult bottom that reaches the requirement of deep water type biological tank.The blade wheel structure key for design is: under the certain power initial conditions, the size of the hydraulic jump that the impeller rotation time is produced and volume of water how much.Hydraulic jump is big, and the water meter area that contacts with air is big; Volume of water is many, and the water yield that contacts with air is many, and this process is brought airborne oxygen in the water into, reaches the effect of aeration.

Summary of the invention

The object of the present invention is to provide the inverted umbrella-shaped aeration machine impeller of the strong and suitable deep channel type of a kind of oxygenation capacity, strengthened water body and in the process of shedding, entrained into air more, and water body is more fully contacted with air, thereby strengthen oxygenation capacity, improve aeration efficient.

The technical scheme that the present invention adopts is following:

A kind of deep water type inverted umbrella-shaped aeration machine impeller includes aeration impeller and paddle wheel, the coaxial aeration impeller below that is installed in of said paddle wheel; Said aeration impeller is installed on reduction box transmission shaft lower end; Said reduction box is by electric motor driving, and described aeration impeller includes the center plate that is vertically connected on the impeller shaft, is furnished with a plurality of aeration blades on the center plate; The aeration blade upper end tilts to be connected with the setting-out plate; The lower end of setting-out plate is connected on the center plate, and each aeration blade and impeller radially are a back rake angle α, and with impeller shaft to being the angle β that meets water; Each aeration blade lower end comes together in respectively in the base cone platform, and center plate, aeration blade and setting-out plate constitute impeller and throw the mouth of a river.

Described aeration blade quantity is 7～10, and back rake angle α is 10 °～15 °, and the angle β that meets water is 5 °～10 °, and base cone platform tapering is 75 °～90 °.

Described paddle wheel includes perpendicular to the gusset plate on the coupling shaft, and gusset plate evenly is furnished with agitating vane, and agitating vane and impeller shaft are to being the angle γ that meets water.

Described agitating vane quantity is 3～5, and the angle γ that meets water is 30 °～45 °.

In the present invention, during the aeration impeller rotation, through the effect of blade back rake angle α, under same loading condiction, improved rotating speed, the result is that the water yield through impeller strengthens in the unit time; Through the meet water effect of angle β of blade, the result is the height that has improved hydraulic jump.Both actings in conjunction have strengthened water body and in the process of shedding, have entrained into air more, and water body is more fully contacted with air, thereby strengthen oxygenation capacity, improve aeration efficient.

In the present invention, during the coaxial rotation of paddle wheel,, form axial flow from bottom to top, make wheel bottom liquid produce the effect of eddy current diffusion through the meet water effect of angle γ of blade.The process that axial flow makes progress is converged and is together shed out the throwing mouth of a river to shed the negative pressuren zone that water body produces because of aeration impeller after, has prevented the sludge settling of zanjon bottom.

Description of drawings

Fig. 1 is a deep water type aeration impeller of the present invention working position synoptic diagram.

Fig. 2 is a front view of the present invention.

Fig. 3 is a vertical view of the present invention.

Fig. 4 is a paddle wheel front view of the present invention.

Fig. 5 is a paddle wheel vertical view of the present invention.

Embodiment

Referring to accompanying drawing, a kind of deep water type inverted umbrella-shaped aeration machine impeller includes aeration impeller 1 and paddle wheel 2; Paddle wheel 2 coaxial aeration impeller 1 belows that are installed in, aeration impeller 1 is installed on reduction box 5 transmission shafts 3 lower ends, and reduction box is driven by motor 4; Aeration impeller 1 includes the center plate 6 that is vertically connected on the impeller shaft, is furnished with 7～10 aeration blades 7 on the center plate 6, and aeration blade 7 upper ends tilt to be connected with setting-out plate 8; The lower end of setting-out plate 8 is connected on the center plate 6, and each aeration blade 7 radially is a back rake angle α with impeller, and with impeller shaft to being the angle β that meets water; Each aeration blade 7 lower ends come together in respectively in the base cone platform 9, and back rake angle α is 10 °～15 °, and the angle β that meets water is 5 °～10 °; Base cone platform tapering is 75 °～90 °, and center plate, aeration blade and setting-out plate constitute impeller and throw the mouth of a river 10; Paddle wheel 2 includes perpendicular to the gusset plate on the coupling shaft 11, and gusset plate 11 evenly is furnished with 3～5 agitating vanes 12, and agitating vane 12 and impeller shaft are to being the angle γ that meets water, and the angle γ that meets water is 30 °～45 °.

In sum; When core of the present invention is the impeller rotation; Utilize the effect of back rake angle α with the angle β that meets water of aeration blade, improved the height of water flow and hydraulic jump effectively, the water body that stirs is dished out through throwing the mouth of a river; Formed liquid level upgrades and contacts with air fully with water curtain, reaches to greatest limit the effect of aeration.Simultaneously, utilize the effect of the axial flow of paddle wheel generation, make the liquid of zanjon bottom form fluidised form upwards, prevent the sedimentation of bottom mud.

Claims

1. a deep water type inverted umbrella-shaped aeration machine impeller includes aeration impeller and paddle wheel, it is characterized in that: the coaxial aeration impeller below that is installed in of said paddle wheel; Said aeration impeller is installed on reduction box transmission shaft lower end; Said reduction box is by electric motor driving, and described aeration impeller includes the center plate that is vertically connected on the impeller shaft, is furnished with a plurality of aeration blades on the center plate; The aeration blade upper end tilts to be connected with the setting-out plate; The lower end of setting-out plate is connected on the center plate, and each aeration blade and impeller radially are a back rake angle α, and with impeller shaft to being the angle β that meets water; Each aeration blade lower end comes together in respectively in the base cone platform, and center plate, aeration blade and setting-out plate constitute impeller and throw the mouth of a river.

2. deep water type inverted umbrella-shaped aeration machine impeller according to claim 1 is characterized in that: described aeration blade quantity is 7～10, and back rake angle α is 10 °～15 °, and the angle β that meets water is 5 °～10 °, and base cone platform tapering is 75 °～90 °.

3. deep water type inverted umbrella-shaped aeration machine impeller according to claim 1 is characterized in that: described paddle wheel includes perpendicular to the gusset plate on the coupling shaft, and gusset plate evenly is furnished with agitating vane, and agitating vane and impeller shaft are to being the angle γ that meets water.

4. deep water type inverted umbrella-shaped aeration machine impeller according to claim 3 is characterized in that: described agitating vane quantity is 3～5, and the angle γ that meets water is 30 °～45 °.