CN212198733U

CN212198733U - Novel jet aerator

Info

Publication number: CN212198733U
Application number: CN202020408451.XU
Authority: CN
Inventors: 张安龙; 阎毓; 董婷婷; 程丙军; 罗清
Original assignee: Xi An Longhua Environmental Prot Technology Co ltd
Current assignee: Xi An Longhua Environmental Prot Technology Co ltd
Priority date: 2020-03-26
Filing date: 2020-03-26
Publication date: 2020-12-22
Anticipated expiration: 2030-03-26

Abstract

The utility model discloses a novel jet aerator, including circulating pipe, circulating pipe's a pot head is equipped with the mixing chamber, circulating pipe is located the tip of mixing chamber and is provided with the one-level nozzle, the other end is provided with circulating water pump, the mixing chamber cover is equipped with the intake pipe, the lateral wall of intake pipe is provided with inlet port a perpendicularly, be provided with the board between the lateral wall of mixing chamber and the inside wall of intake pipe, the both ends of intake pipe are sealed end, the body that the mixing chamber is located the intake pipe is provided with N hole, the sealed air chamber that is provided with in mixing chamber outside, the air chamber is provided with inlet port b, inlet port b is connected with the air-blower, the intake pipe is located inside the air chamber, the tip. The utility model relates to a novel jet aerator, which solves the problems of low oxygenation efficiency and large energy consumption of the jet aerator in the aerobic biological treatment process in the prior art.

Description

Novel jet aerator

Technical Field

The utility model belongs to the technical field of sewage treatment, concretely relates to novel jet aerator.

Background

The aerobic biological treatment is a main process for treating domestic sewage and industrial wastewater, and has the advantages of good treatment effect, low operation cost and the like. The aeration equipment in the aerobic treatment system mainly supplies oxygen to the water, so that the oxygen in the air can be effectively dissolved into the unsaturated water body to maintain the growth and biological oxidation of microorganisms. The activated sludge in the water body is in a suspension state through the stirring and mixing action of the aeration equipment, and organic matters, microorganisms and oxygen in the water can be fully contacted, so that favorable conditions are created for the removal of the organic matters and the growth of the microorganisms; the aeration equipment has driving force on water flow, so that the mud-water mixture circularly flows in the aeration tank, and the uniform distribution of oxygen in the water body is promoted; the aeration equipment is used as a core unit of a sewage treatment plant, and the energy consumption of the aeration equipment accounts for about 45-75% of that of the whole sewage treatment plant. Therefore, the research on the aeration equipment with high oxygenation performance has great significance for saving energy and reducing consumption of the sewage treatment plant.

At present, the aeration equipment which is applied more is a jet aerator which is particularly important in the aerobic biological treatment process, and the oxygenation performance of the jet aerator not only relates to the degradation degree of microorganisms in an aeration tank to organic matters, but also directly influences the energy consumption and the operation cost of the whole aerobic biological treatment system. Although the existing jet aerator has the functions of oxygenation and plug flow for sewage treatment in an aerobic biological treatment process, the existing jet aerator has low oxygenation efficiency, poor mixing effect of air and water, high requirement on the lift of a circulating water pump and large energy consumption.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a novel jet aerator, which solves the problems of low oxygenation efficiency and large energy consumption of the jet aerator in the aerobic biological treatment process in the prior art.

The utility model discloses the technical scheme who adopts is a novel jet aerator, including circulating pipe, circulating pipe's a pot head is equipped with the mixing chamber, circulating pipe is located the tip of mixing chamber and is provided with the one-level nozzle, the other end is provided with circulating water pump, the mixing chamber cover is equipped with the intake pipe, the lateral wall of intake pipe is provided with inlet port a perpendicularly, be provided with the board between the lateral wall of mixing chamber and the inside wall of intake pipe, the both ends of intake pipe are sealed end, the body that the mixing chamber is located the intake pipe is provided with N hole, the sealed air chamber that is provided with in mixing chamber outside, the air chamber is provided with inlet port b, inlet port b is connected with the air-blower, the intake pipe is located inside the air chamber.

The utility model discloses a characteristics still lie in:

the mixing chamber is circular in cross-section.

The proportion of the N holes in the mixing chamber body is 13% -20%, and the N holes are uniformly distributed along the axial direction of the mixing chamber.

The maximum outer diameter of the air inlet pipe is 110-130% of the maximum outer diameter of the mixing chamber.

The vertical cross sections of the first-stage nozzle and the second-stage nozzle are both trapezoidal, the circulating water pipe and the first-stage nozzle are integrally formed, and the mixing chamber and the second-stage nozzle are integrally formed.

The distance between the end part of the air inlet pipe close to the primary nozzle and the nozzle of the primary nozzle is 6-10 cm.

The first-stage nozzle is connected with the circulating water pump through a flange, and an air inlet b of the air chamber is connected with the air blower through a flange.

The air chamber is a wedge-shaped cavity, an arc-shaped mounting opening matched with the outer side wall of the mixing chamber is formed in the bottom of the air chamber, and the air chamber is welded with the mixing chamber.

The utility model has the advantages that:

the utility model relates to a novel jet aerator, force to blow the air into the aerator through the air-blower, make sewage, activated sludge and air disperse the mixture better, not only increased the turbulence intensity in the mixing chamber, still break up the air into tiny bubble, increase the gas-liquid area of contact, make oxygen dissolve in the gas-liquid mixture phase more rapidly, thereby improve the oxygen transfer efficiency of aerator, its oxygen transfer efficiency can reach 30% ~ 35%; the utility model relates to a novel jet aerator is low to the lift demand of circulating water pump, and power efficiency can reach 4.0 ~ 5.2 kg/(kW.h) to difficult jam, the fault rate is low, has reached energy saving and consumption reduction's purpose.

Drawings

Fig. 1 is a front view of the novel jet aerator of the present invention;

fig. 2 is a top view of the novel jet aerator of the present invention;

fig. 3 is a left side view of the novel jet aerator of the present invention.

In the figure, 1 is a circulating water pipe, 2 is a primary nozzle, 3 is an air inlet pipe, 4 is an air chamber, 5 is a mixing chamber, 6 is a secondary nozzle, and 7 is a plate.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

The utility model relates to a novel jet aerator, which has the structure shown in figures 1 and 2, 3, including circulating pipe 1, the pot head of circulating pipe 1 is equipped with mixing chamber 5, the tip that circulating pipe 1 is located mixing chamber 5 is provided with one-level nozzle 2, the other end is provided with circulating water pump, 5 covers of mixing chamber are equipped with intake pipe 3, the lateral wall of intake pipe 3 is provided with inlet port a perpendicularly, be provided with board 7 between the lateral wall of mixing chamber 5 and the inside wall of intake pipe 3, the both ends of intake pipe 3 are sealed end, the body that mixing chamber 5 is located intake pipe 3 is provided with N hole, 5 outside seals of mixing chamber are provided with air chamber 4, air chamber 4 is provided with inlet port b, inlet port b is connected with the air-blower, intake pipe 3 is located inside air chamber 4, the tip that circulating pipe 1 was kept away from to mixing chamber 5 is provided with second.

Preferably, the mixing chamber 5 is circular in cross-section.

Preferably, the proportion of the N holes in the body of the mixing chamber 5 is 13% -20%, and the N holes are uniformly distributed along the axial direction of the mixing chamber 5.

Preferably, the maximum outer diameter of the intake pipe 3 is 110% to 130% of the maximum outer diameter of the mixing chamber 5.

Preferably, the vertical cross sections of the primary nozzle 2 and the secondary nozzle 6 are trapezoidal, the circulating water pipe 1 and the primary nozzle 2 are integrally formed, and the mixing chamber 5 and the secondary nozzle 6 are integrally formed.

Preferably, the distance between the end part of the air inlet pipe 3 close to the first-stage nozzle 2 and the nozzle of the first-stage nozzle 2 is 6-10 cm.

Preferably, the primary nozzle 2 is connected with the circulating water pump through a flange, and the air inlet b of the air chamber 4 is connected with the blower through a flange.

Preferably, the air chamber 4 is a wedge-shaped cavity, the bottom of the air chamber 4 is provided with an arc-shaped mounting opening matched with the outer side wall of the mixing chamber 5, and the air chamber 4 is welded with the mixing chamber 5.

The utility model relates to a novel jet aerator, the working process as follows:

putting a novel jet aerator into an aerobic biological treatment tank, starting an air blower and a circulating water pump, wherein the air blower blows air into an air chamber 4, then the air blower is introduced into a mixing chamber 5 along an air inlet hole b of an air inlet pipe 3, meanwhile, the circulating water pump pumps a mixture of sewage and activated sludge into the mixing chamber 5 through a primary nozzle 2, the speed of a mixed phase of the sewage and the aerobic sludge is increased after the mixed phase passes through the primary nozzle 2, the mixed phase is disturbed with an airflow column of the mixing chamber 5 to generate turbulence, the air can be dispersed into tiny air columns by holes of the mixing chamber 5, the tiny air bubbles are changed into tiny air bubbles by combining the shearing action of liquid sprayed out by the primary nozzle 2, the smaller the air bubbles are, the larger the surface area of the same volume of the air is, the contact area of the air and the mixed phase is increased, the turbulence intensity is increased accordingly, the air bubbles are crushed into emulsion, the emulsion is rapidly dissolved into, in addition, the plate 7 divides the gas flow, so that the disturbance of a gas flow column is enhanced, further, the gas flow column and the liquid generate violent turbulence, bubbles are sheared to be smaller, and the mass transfer of oxygen is facilitated.

The utility model relates to a novel jet aerator, its advantage lies in:

the novel jet aerator can better disperse and mix the three phases of sewage, activated sludge and air; the turbulence intensity in the mixing chamber 5 is increased, air is scattered into tiny bubbles, the gas-liquid contact area is increased, oxygen is more rapidly dissolved in a gas-liquid mixed phase, the oxygen transfer efficiency and the power efficiency of the air supply type low-pressure jet aerator are improved, and the purposes of energy conservation and consumption reduction are achieved; the utility model relates to a novel jet aerator can also play the effect of preventing suck-back, and after circulating water pump was out of order, sewage and activated sludge in the mixing chamber can flow in the cavity of intake pipe 3 through inlet port a, flow in air chamber 4 again, avoid mud direct reflux to circulating water pipe 1, and then damage circulating water pump, cause the loss.

Claims

1. The novel jet aerator is characterized by comprising a circulating water pipe (1), wherein one end of the circulating water pipe (1) is sleeved with a mixing chamber (5), the end part of the circulating water pipe (1) positioned in the mixing chamber (5) is provided with a first-stage nozzle (2), the other end of the circulating water pipe is provided with a circulating water pump, the mixing chamber (5) is sleeved with an air inlet pipe (3), the side wall of the air inlet pipe (3) is vertically provided with an air inlet hole a, a plate (7) is arranged between the outer side wall of the mixing chamber (5) and the inner side wall of the air inlet pipe (3), the two ends of the air inlet pipe (3) are sealed ends, the body of the mixing chamber (5) positioned in the air inlet pipe (3) is provided with N holes, the outer side of the mixing chamber (5) is hermetically provided with an air chamber (4), the, intake pipe (3) are located inside air chamber (4), the tip that circulating pipe (1) was kept away from in mixing chamber (5) is provided with second grade nozzle (6), second grade nozzle (6) are located the oxidation ditch bottom.

2. A novel jet aerator as claimed in claim 1, characterised in that said mixing chamber (5) is circular in cross-section.

3. A novel jet aerator as claimed in claim 2, characterised in that the proportion of N said holes in the body of the mixing chamber (5) is between 13% and 20%, and that N said holes are uniformly distributed in the axial direction of the mixing chamber (5).

4. A novel jet aerator as claimed in claim 2, characterised in that the maximum outer diameter of said inlet pipe (3) is between 110% and 130% of the maximum outer diameter of the mixing chamber (5).

5. A novel jet aerator as claimed in claim 1, characterized in that the vertical cross-sections of the primary nozzles (2) and the secondary nozzles (6) are trapezoidal, the circulating water pipe (1) is formed integrally with the primary nozzles (2), and the mixing chamber (5) is formed integrally with the secondary nozzles (6).

6. The novel jet aerator as claimed in claim 1, wherein the distance between the end of the air inlet pipe (3) close to the primary nozzle (2) and the nozzle of the primary nozzle (2) is 6-10 cm.

7. A novel jet aerator as claimed in claim 1, characterized in that said primary nozzles (2) are flanged to the circulating water pump and the air inlet holes b of said air chamber (4) are flanged to the blower.

8. A novel jet aerator as claimed in claim 1, characterized in that said air chamber (4) is a wedge-shaped cavity, the bottom of said air chamber (4) is provided with an arc-shaped mounting opening matching with the outer side wall of the mixing chamber (5), and said air chamber (4) is welded with the mixing chamber (5).