CN112791629B

CN112791629B - Vertical double-curve stirring impeller and stirrer thereof

Info

Publication number: CN112791629B
Application number: CN202110306092.6A
Authority: CN
Inventors: 凌跃成; 潘云; 凌杰
Original assignee: Jiangsu Yiyang Water Industry Co ltd
Current assignee: Jiangsu Yiyang Water Industry Co ltd
Priority date: 2021-03-23
Filing date: 2021-03-23
Publication date: 2022-08-16
Anticipated expiration: 2041-03-23
Also published as: CN112791629A

Abstract

The invention discloses a vertical hyperbolic stirring impeller and a stirrer thereof, wherein the vertical hyperbolic stirring impeller comprises a mounting seat and blades, the blades are uniformly connected around the mounting seat, the blades comprise a flow guide supporting plate and a flow pushing plate, the surface of the flow pushing plate is curved, the curved surface of the surface is twisted, the flow pushing plate is gradually twisted from the axial end to the outer end, the flow pushing plate is upwards protruded and mounted at the rear edge of the flow guide supporting plate, the front edge and the rear edge of the flow guide supporting plate are both curved, and the surface area of the surface of the flow guide supporting plate from the inner connecting end to the outer extending end is gradually increased. The stirrer comprises a vertical hyperbolic stirring impeller and a driving mechanism for driving the impeller to rotate, and a mounting seat of the vertical hyperbolic stirring impeller is connected with the driving mechanism through a rotating shaft. The invention has strong stirring capability, can achieve corresponding stirring effect without adopting high rotating speed, can greatly save energy consumption, saves cost for enterprises, and simultaneously prolongs the service life of the device.

Description

Vertical double-curve stirring impeller and stirrer thereof

Technical Field

The invention relates to a sewage treatment device, in particular to a vertical hyperbolic stirring impeller and a stirrer thereof, belonging to the technical field of energy conservation and environmental protection.

Background

Sewage treatment is a process of purifying sewage to meet the water quality requirement of discharging the sewage into a certain water body or reusing the sewage. Sewage treatment is widely applied to various fields such as buildings, agriculture, traffic, energy, petrifaction, environmental protection, urban landscape, medical treatment, catering and the like, and is increasingly used in daily life of common people.

Biological treatment is the most common and the most main treatment method in sewage treatment projects at home and abroad at present, wherein the aerobic biological treatment method is most widely applied. Aeration is an important link of an aerobic biological treatment system, and has the functions of oxygenating oxygen in the reaction tank, ensuring oxygen required by the biochemical action of microorganisms, and simultaneously ensuring the full mixing of the microorganisms, organic matters and dissolved oxygen in the reactor, thereby creating favorable biochemical reaction conditions for the microorganisms. According to reliable research, the aeration equipment consumes most power in the biological treatment process, which accounts for about 80% of the whole sewage treatment system, so that the improvement of the efficiency of the aeration equipment is a key factor for reducing the water treatment cost. In the aeration process, the stirrer is used as a key hydraulic functional part for the biochemical reaction of good itch, and directly influences the hydraulic flow state and the oxygenation aeration effect in the sewage treatment process.

At present, various international and domestic mixers mainly have two types: one is a paddle type stirrer, and the other is an umbrella type hyperboloid stirrer. The paddle type stirrer generates a stirring action by generating a lateral plug flow by utilizing the angle of a paddle when rotating. The resistance of the lateral straight blades in water is high, so that the stirrer can only adopt a low rotating speed in operation, generally 2-12 revolutions per minute, and the stirring capacity is insufficient due to the low rotating speed. Another umbrella hyperboloid blender, such as the one disclosed in patent 200680011608.8; the rotating speed required by the umbrella-shaped hyperboloid stirrer is high, the common rotating speed is 30-42 revolutions per minute, and the stirrer is good in stirring capacity due to the high rotating speed and is popular in market application. But the power of the matched motor and the speed reducer is larger due to the higher rotating speed, so that the energy consumption is greatly increased, and the unit operation cost is greatly increased.

Disclosure of Invention

The invention aims to provide a vertical hyperbolic stirring impeller and a stirrer thereof, which are used for overcoming the problems in the prior art.

On one hand, one of the technical schemes adopted by the invention is as follows: the utility model provides a vertical hyperbolic impeller, its includes mount pad and blade, the blade sets up two at least to the blade is even to be connected around the mount pad, the blade includes water conservancy diversion layer board and plug flow board, the face of plug flow board is the curved surface form to the curved surface of face is the distortion form, and it twists reverse to the outside end gradually from the axis side, and the back edge at the water conservancy diversion layer board is installed to the protrusion that pushes up simultaneously, the leading edge and the back edge of water conservancy diversion layer board all are the curved surface form, and the crooked direction of leading edge and back edge is unanimous with the face crooked direction of plug flow board, simultaneously the water conservancy diversion layer board is from inboard link to the outside face surface area of extending the end and crescent.

Further, the blades are installed horizontally or are installed overall obliquely downwards.

Further, the installation angle between the blade and the horizontal plane ranges from 0 degree to 35 degrees; the angle between the vertical shaft and the vertical shaft on the mounting seat is 90-135 degrees through conversion, and the angle can be adjusted and selected according to the concentration of the stirred medium in specific application.

Furthermore, the height of the thrust plate is 150-300 mm.

Furthermore, the flow guide supporting plate and the flow pushing plate are made of stainless steel materials, and the flow guide supporting plate and the flow pushing plate are of an integrally formed structure or are connected with each other through welding.

Furthermore, the flow guide supporting plate and the flow pushing plate are made of glass fiber reinforced plastic materials, and the flow guide supporting plate and the flow pushing plate are of an integrally formed structure.

Further, the number of the blades is 2-6, and the blades are evenly arranged on the periphery of the mounting seat in an evenly-divided mode.

Further, the diameter range of the impeller is 300-3000 mm.

On the other hand, the second technical scheme adopted by the invention is as follows: a vertical hyperbolic stirring machine comprises the vertical hyperbolic stirring impeller and a driving mechanism for driving the impeller to rotate in the first scheme, wherein a mounting seat of the vertical hyperbolic stirring impeller is connected with the driving mechanism through a rotating shaft.

Furthermore, the driving mechanism comprises a motor and a speed reducer, the output end of the motor is connected with the input end of the speed reducer, the output end of the speed reducer is connected with the top end of the rotating shaft, and the bottom end of the rotating shaft is fixedly connected with the mounting seat of the vertical hyperbolic stirring impeller.

The invention has the beneficial effects that: the vertical hyperboloid stirrer combines the advantages of the two existing stirrers, creatively designs the stirring impeller into a turbine shape, the turbine shape is specifically a curved surface, the curved surface of the plate surface is twisted, the turbine shape is gradually twisted from the axial end to the outer side end, the height of the blade surface of the whole impeller is increased, the impeller volume is greatly increased, and when the vertical hyperboloid stirrer is used, the guide supporting plate is arranged below the impeller, so that the stirred fluid is quickly radiated to the periphery to form the bottom of the fluid to generate liquid level negative pressure, and the liquid at the upper part in the pool is sucked to the bottom to be stirred by the impeller in a 360-degree vertical three-dimensional circulating manner. In addition, the impeller blade is designed into a turbine type, so that the energy consumption can be reduced by about 80% when the impeller blade rotates, a large amount of energy consumption can be saved, a large amount of cost can be saved for enterprises, and the service life of the impeller blade is prolonged.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 is a schematic perspective view of a vertical hyperbolic stirring impeller;

FIG. 2 is a schematic top view of a vertical hyperbolic stirring impeller;

FIG. 3 is a schematic diagram of the structure of a vertical double-curved blender;

labeled as: 1-mounting seat, 2-blade, 3-guide supporting plate, 4-thrust plate, 5-guide supporting plate front edge, 6-guide supporting plate rear edge, 7-rotating shaft, 8-motor and 9-speed reducer.

Detailed Description

The invention is described in detail below with reference to the figures and the specific embodiments.

The first embodiment.

As shown in fig. 1 and 2, a vertical hyperbolic stirring impeller, it includes mount pad 1 and blade 2, blade 2 sets up two at least to blade 2 is evenly connected around mount pad 1, blade 2 includes water conservancy diversion layer board 3 and plug board 4, the face of plug board 4 is the curved surface form to the curved surface of face is the distortion form, and it twists reverse gradually to the outside end from the axle side end, and plug board 4 upwards protrusion is installed at the back edge 6 of water conservancy diversion layer board 3 simultaneously, the leading edge 5 and the back edge 6 of water conservancy diversion layer board 3 all are the curved surface form, and the crooked direction of leading edge 5 and back edge 6 is unanimous with the crooked direction of face of plug board 4, simultaneously water conservancy diversion layer board 3 extends the face surface area and the crescent of end from inboard link to the outside.

In this embodiment, the blades 2 are installed horizontally or are installed overall in a downward inclination. Preferably, the installation angle between the blade 2 and the horizontal plane ranges from 0 to 35 degrees; the angle between the vertical shaft and the vertical shaft on the mounting seat is 90-135 degrees through conversion, and the angle can be adjusted and selected according to the concentration of the stirred medium in specific application.

In this embodiment, the height of the thrust plate is 150-300 mm.

In this embodiment, the flow guide supporting plate 3 and the flow pushing plate 4 are made of stainless steel, and the flow guide supporting plate 3 and the flow pushing plate 4 are of an integrally formed structure or the flow guide supporting plate 3 and the flow pushing plate 4 are connected together by welding. Or the flow guide supporting plate 3 and the flow pushing plate 4 can also be made of glass fiber reinforced plastic materials, and the flow guide supporting plate 3 and the flow pushing plate 4 are of an integrally formed structure.

In the embodiment, the number of the blades is 2-6, preferably 3 or 4.

In this embodiment, the diameter range of the impeller is 300-3000 mm.

Example two.

As shown in fig. 3, a vertical hyperbolic stirring machine includes a vertical hyperbolic stirring impeller and a driving mechanism for driving the impeller to rotate, in which a mounting seat of the vertical hyperbolic stirring impeller is connected to the driving mechanism through a rotating shaft 7. The driving mechanism comprises a motor 8 and a speed reducer 9, the output end of the motor 8 is connected with the input end of the speed reducer 9, the output end of the speed reducer 9 is connected with the top end of a rotating shaft 7, and the bottom end of the rotating shaft 7 is fixedly connected with a mounting seat 1 of a vertical hyperbolic stirring impeller.

The working principle of the invention is as follows: in the rotation process of the blade, the guide supporting plate drags the liquid on the blade, the flow pushing plate rotates to push the liquid in front of the blade out to the periphery, due to the unique curved surface structures of the guide supporting plate and the flow pushing plate, the flow pushing plate of the blade pushes the liquid in the area of the blade away to disperse the liquid around the blade for 360 degrees, then the bottom area forms a negative pressure area, the liquid above the negative pressure area can downwards enter the area and is pushed to the periphery, and therefore the negative pressure area is broken up, and the integral three-dimensional stirring effect is achieved.

In summary, the impeller is increased from 7mm to 150-300 mm in height of a common stirrer, and the impeller area is increased by several times, so that the energy consumption is not increased, and the impeller is designed to be of a turbine type, so that the energy consumption can be reduced by 80% when the impeller rotates. In the practical process, a paddle type stirrer with the diameter of 3000mm and an umbrella-shaped hyperboloid stirrer are respectively tested. In the test, a vertical hyperbolic blade stirring prototype with the diameter of 3000mm is compared with other stirrers in operation. And (3) test results: (1) when the paddle stirrer with the diameter of 3000mm rotates at the same speed of 9 rpm and the power of the matched motor is 3kw, the bottom sludge in the pool can not be stirred by the paddle stirrer, and the water surface does not roll. And the vertical hyperbolic blade type stirrer is uniformly stirred up and down in a pool with the depth of 6 meters under the same condition, and the water flow on the surface of the pool is actively tumbled. (2) In the test with the umbrella-shaped double-curved blade stirrer with the diameter of 3000mm, the matched power of the umbrella-shaped double-curved blade stirrer is 11.5kw and 42 revolutions, while the matched power of the vertical double-curved blade stirrer is 19 kw, the stirring capability of the neutral double-curved blade stirrer is slightly higher than that of the umbrella-shaped double-curved blade stirrer in comparison with the two, and the energy consumption is only half of that of the umbrella-shaped double-curved blade stirrer.

Therefore, compared with other similar products, under the condition of the same operation effect, the application effect of the invention can save 50 percent of power consumption, and the operation cost of the stirrer can be saved by more than 30 ten thousand yuan per year in a sewage plant of 20 ten thousand tons/d, so the invention has huge energy-saving benefit!

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the scope of the present invention in any way, and all technical solutions obtained by using equivalent substitution methods fall within the scope of the present invention.

The parts not involved in the present invention are the same as or can be implemented using the prior art.

Claims

1. The utility model provides a vertical hyperbolic impeller, its characterized in that, includes mount pad and blade, the blade sets up two at least to the blade is evenly connected around the mount pad, blade horizontal installation or whole downward sloping installation, the installation angle range between blade and the horizontal plane is 0~35 degree, the blade includes water conservancy diversion layer board and plug board, the face of plug board is the curved surface form to the curved surface of face is the distortion form, and it twists reverse gradually to the outside end from the axle side, and the plug board upwards protrudes simultaneously and installs the back edge at the water conservancy diversion layer board, the leading edge and the back edge of water conservancy diversion layer board all are the curved surface form to the crooked direction of leading edge and back edge is unanimous with the crooked direction of the face of plug board, simultaneously the water conservancy diversion layer board is from inboard link to the outside face surface area and the crescent who extends the end.

2. The vertical hyperbolic stirring impeller of claim 1, wherein the height of the impeller is 150-300 mm.

3. The vertical hyperbolic stirring impeller of claim 1, wherein the flow guiding supporting plate and the thrust plate are made of stainless steel, and the flow guiding supporting plate and the thrust plate are of an integrally formed structure or are connected together by welding.

4. The vertical hyperbolic stirring impeller of claim 1, wherein the flow guide supporting plate and the flow pushing plate are made of glass fiber reinforced plastic material, and the flow guide supporting plate and the flow pushing plate are of an integrally formed structure.

5. The vertical hyperbolic stirring impeller of claim 1, wherein the number of the blades is 2-6, and the blades are evenly installed around the installation seat in equal parts.

6. The vertical hyperbolic stirring impeller of claim 1, wherein the diameter of the impeller ranges from 300 to 3000 mm.

7. A vertical hyperbolic stirring machine, comprising a vertical hyperbolic stirring impeller as claimed in any one of claims 1 to 6, wherein a mounting seat of the vertical hyperbolic stirring impeller is connected with a driving mechanism through a rotating shaft.

8. The vertical hyperbolic mixer of claim 7, wherein the driving mechanism comprises a motor and a reducer, an output end of the motor is connected with an input end of the reducer, an output end of the reducer is connected with a top end of the rotating shaft, and a bottom end of the rotating shaft is fixedly connected with the mounting seat of the vertical hyperbolic mixing impeller.