CN202246245U

CN202246245U - Aerating device with low gas pressure loss

Info

Publication number: CN202246245U
Application number: CN2011204316734U
Authority: CN
Inventors: 王杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-11-03
Filing date: 2011-11-03
Publication date: 2012-05-30
Anticipated expiration: 2021-11-03

Abstract

The utility model discloses an aerating device with low gas pressure loss, which comprises a gas feeding pipe and a gas liquid mixing pipe. The gas feeding pipe is inserted into the lower end portion of the gas liquid mixing pipe, an inner wall of the gas liquid mixing pipe is provided with flow guiding resistance plates and rivet cap-shaped protrusions, and the rivet-shaped protrusions are arranged above the flow guiding resistance plates. The two flow guiding resistance plates are distributed in a shape of mutual intersection. The flow guiding resistance plates are in a shape of a crescent arc. The rivet cap-shaped protrusions are divided into big rivet cap-shaped protrusions and small rivet cap-shaped protrusions. The aerating device with the low gas pressure loss is long in service life and not easy to block, and aerating area is 5 to 7 times as large as that of a common aerating device.

Description

A kind of aerating apparatus of low gaseous tension loss

Technical field

The utility model relates to the sewage disposal device field, particularly relates to a kind of sewage disposal reaction tank device.

Background technology

In the biological reaction tank of WWT, use loose device of air or aerating apparatus at the bottom of the pond usually.Common aerating apparatus, it is discoid to be mostly that aeration head is generally, and the top perforate is used for the gas ejection, perhaps is used for the gas ejection for its tube wall perforate of aeration tube.After the gas ejection, utilize its buoyancy to rise to liquid level naturally.In order to improve the utilization ratio of oxygen, promptly send the ratio that the oxygen in the air of aeration tank is digested by the mikrobe in the aeration tank to, pore is generally very little; So that spray less bubble increased its residence time in liquid, this has also caused the pressure loss of gas bigger, and in the accumulation of the unavoidable mud in the bottom of its installation; Simultaneously, be used in when handling the high sewage of sludge concentration, be easy to take place scale formation; Gas orifice gradually can be blocked; When surpassing duration of service more than 3 years, be difficult to normal operation performance effect, general work-ing life is at most also at 5-7.On the other hand, because the constitutional features of common aerating apparatus is difficult to be applicable to the WWT of the higher easy fouling of mineral ion concentration, also or often need the upkeep operations such as cleaning, replacing of equipment after using.During operation even need stop to produce, cleared up the water in the pond.And adopting the intermittent aeration mode; Promptly in same biological reaction tank, stop aeration number hour behind the aeration number hour again; And then when repeating mode that aeration stops again and carrying out WWT, the gas orifice of common aerating apparatus is easy blocking more, is difficult to normal operation performance effect.How to address this problem is the difficult problem that the technician faces.

The utility model content

The utility model has been to overcome the defective of prior art, and the aerating apparatus of a kind of long service life, difficult low gaseous tension loss of blocking is provided.

In order to solve the problems of the technologies described above, the utility model provides following technical scheme:

The aerating apparatus of low gaseous tension loss; Comprise induction pipe and gas-liquid mixing head; Said gas-liquid mixed pipe bottom is inserted with induction pipe, and said gas-liquid mixed inside pipe wall is provided with water conservancy diversion flaps and rivet cap shape prominence, and said water conservancy diversion flaps top is provided with rivet cap shape prominence.

Further, said water conservancy diversion flaps quantity is two, and said water conservancy diversion flaps is mutual cross-like and distributes.

Further, said water conservancy diversion flaps is the crescent shape circular arc.

Further, said rivet cap shape prominence is divided into two kinds of big rivet cap shape prominence and little rivet cap shape prominences.

Compared with prior art, the utlity model has following beneficial effect:

Mud is difficult for piling up in the reaction tank bottom, and the gas-liquid mixed pipe is difficult for stopping up; Aeration area is than the big 5-7 of common aerating apparatus times, and the utilization ratio of oxygen is high, thereby more energy-conservation, long service life, and maintenance cost is low, and is applied widely, more stable work.

Description of drawings

Fig. 1 is the structural representation of the aerating apparatus of the low gaseous tension loss of the utility model;

Fig. 2 is the vertical view of the utility model gas-liquid mixed pipe;

Fig. 3 be the utility model gas-liquid mixed pipe A to sectional view;

Fig. 4 be the utility model gas-liquid mixed pipe B to sectional view;

Fig. 5 be Fig. 3 gas-liquid mixed pipe C to sectional view;

Fig. 6 be Fig. 3 gas-liquid mixed pipe D to sectional view.

Embodiment

Describe below in conjunction with the preferred embodiment of accompanying drawing, should be appreciated that preferred embodiment described herein only is used for explanation and explains the utility model, and be not used in qualification the utility model the utility model.

Like Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, shown in Figure 6; Comprise induction pipe 1, gas-liquid mixed pipe 2, below gas-liquid mixed pipe 2, the mouth of pipe of giving vent to anger of induction pipe 1 inserts from gas-liquid mixed pipe 2 bottoms; The caliber of gas-liquid mixed pipe 2 is greater than the caliber of induction pipe 1; Gas-liquid mixed pipe 2 is a straight tube, and induction pipe 1 is curved tube or other shapes such as the circular-arc pipe of two knuckles, and gas is sent in the gas-liquid mixed pipe 2 from the bottom straight line of gas-liquid mixed pipe 2.Gas directly spues from induction pipe 1, sends gas-liquid mixed pipe 2 to.Above induction pipe 1 outlet; Be set with water conservancy diversion flaps 3 and rivet cap shape prominence 4 on gas-liquid mixed pipe 2 inwalls; The quantity of water conservancy diversion flaps 3 is two, and water conservancy diversion flaps 3 is the tilting shape of intersection and distributes, and water conservancy diversion flaps 3 is the crescent shape circular arc; Be lune cut off about 1/3rd stay like the crescent shape part, make through the fluid here and form spiral helicine rising stream and fierce whirling current.Rivet cap shape prominence 4 is positioned at water conservancy diversion flaps 3 tops; Rivet cap shape prominence 4 is divided into big rivet

cap shape prominence

5 and 6 two kinds of little rivet cap shape prominences; And the big or small different in size and quantity of two kinds of rivet cap shape prominences is unfixing; Optimal way is that big rivet cap shape thrust 5 every layer quantitative ranges are 6-18; Little rivet cap shape thrust 6 every layer quantitative ranges are 8-32, and big rivet cap shape prominence 5 is all alternately arranged along wall circulars in the gas-liquid mixed pipe 2 with little rivet cap shape prominence 6 each other, arranges number of plies scope greater than 4 layers.The rivet-like prominence is used to pulverize gas group and liquid bolus; And make the gas-liquid of flowing through form random air-flow and make the gas-liquid thorough mixing; Increase gas liquid mixture simultaneously through the resistance here; Reduce flow velocity, increase the time of gas-liquid mixed, also make through mixed gas liquid mixture and spread with eddy-currents form ejection gas-liquid mixed pipe 2 and to periphery.

Gas is behind the induction pipe 1 spirt gas-liquid mixed pipe 2 of bottom, and space clustering is agglomerating below the tilting crescent shape circular arc water conservancy diversion flaps 3 of intersection, the upwards injection rapidly of burst type then, and form spiral helicine riser circuit and fierce eddy-currents.When gas group breaks through crescent shape circular arc water conservancy diversion flaps 3, its below pressure step-down, the liquid of induction pipe 1 tuyere periphery is inhaled into gas-liquid mixed pipe 2.Therefore just formed the induction pipe 1 spirt gas-liquid mixed pipe 2 of gas from the bottom, liquid is sucked into from the tuyere periphery, and from induction pipe 1 spirt of bottom, liquid is sucked into around tuyere gas more again, makes gas-liquid form piston motion so repeatedly.The opposing party; Break through the gas of water conservancy diversion flaps 3; With the eddy-currents of fierceness upwards towards the time, run into tube wall rivet cap shape prominence 4, be broken into tiny bubble and with pipe in the liquid thorough mixing; Suitably reducing when upwards spray thanks to speed, spread with eddy-currents form ejection gas-liquid mixed pipe 2 and to periphery.Liquid is inhaled into from the bottom, and gas liquid mixture forms bigger cycling stream in the ejection from gas-liquid mixed pipe 2 tops around aerating apparatus.

The advantage of the utility model device, muddy water is inhaled into from the tuyere periphery of induction pipe 1, when the muddy water mixed solution of high density and gas mix, is difficult for forming mud in the bottom and piles up.Liquid is inhaled into from gas-liquid mixed pipe 2 bottoms, and gas liquid mixture is the ejection from gas-liquid mixed pipe 2 tops again, around gas-liquid mixed pipe 2, forms bigger cycling stream, and actual aeration useful area than the big 5-7 of common aerating apparatus doubly.The residence time of gas in the pond is long, and the utilization ratio of oxygen is higher, thereby more energy-conservation.Gas is directly told air inlet liquid mixing head 2 from induction pipe 1, and pressure loss is extremely low, and whole device does not have the air outlet, small-bore; And piston motion takes place by pulverizing mixing fully in gas liquid mixture in gas-liquid mixed pipe 2; Form impingement flow, make the bubble in the liquid littler, can not stop up.

The utility model specific examples does

Certain food processing plant carry out the waste water behind the acid-base neutralisation with lime, the concentration of lime slurry is up to 30% in the aeration tank, the two all uses aeration tube and aeration head, but all often stops up.Use induction pipe internal diameter 40mm; Gas-liquid mixed bore 125; Behind the aerating apparatus of the low gaseous tension loss of gas-liquid mixed pipe height 600mm, latch up phenomenon is not observed, and the DO in the pond (dissolved oxygen) value is former below 0.5ppm; In 2 middle of the month on probation, its DO (dissolved oxygen) value remains between the 2.2-2.5ppm always.

2. the waste water of certain sugar enterprise adopts SBR (sequence intermittent activated sludge process), promptly anaerobism, support well, sedimentation, draining accomplish in a pond; This processing mode aerator often stops up, and the DO at the bottom of the pond (dissolved oxygen) value is 0, and thread fungus breeds sludge bulking in a large number; Biological respinse is bad, and sludge settling ratio reached 95 in 30 minutes, behind the aerating apparatus of the low gaseous tension loss of use the utility model; 1. DO (dissolved oxygen) maintains 3ppm at the bottom of the pond, and 2. 30 minutes sludge settling ratios have dropped to below 50 from 95,3. do not have the sludge bulking phenomenon and take place; 4. the downward modulation of the air quantity of gas blower is more than 26.9%, and 5. the daily administration personnel reduce to 0.5 people from 2 people.

3. the waste water of certain paper industry enterprise for the hardness that makes paper improves, adds lime in paper pulp, and the calcium ion concn in the waste water is high, the frequent fouling of pipeline and aerator, and general aeration head and aeration tube can not be used.The long 55m of the aeration tank of its water treatment, wide 14.5m, depth of water 8.5m, the central authorities in the pond, the aerator that to be provided with 6 power be 22KW/H, aerator be because of the calcification fouling, just from the pond, took out in per 4 months to clean, and the bottom in pond and peripheral mud accumulating amount are big.Behind the aerating apparatus of having tried out the low gaseous tension loss of the utility model, the mud packing phenomenon is not observed in the pond, and aerator has also stopped use in 6 water, per hour practices thrift 132 degree.In 3 months on probation of the aerating apparatus of the low air resistance of the utility model, every first quarter moon takes out observation once at the bottom of the pond, after 3 months, do not observe scale formation.

4. the waste water of certain printing and dyeing mill, the long 20m in aeration tank, wide 10m; Depth of water 4.5m is set with 150 of the discoid aeration heads of diameter 40cm at the bottom of the pond, the aeration head production well stops up; Every 2-3 will stop production, and the water in the pond racked up the back clean aeration head, will change whole aeration heads behind the 5-6; Long-term mud is piled up at the bottom of the pond has 20-30cm, has slight foul smell to emit.The aerating apparatus of the low gaseous tension loss of trial edition utility model, wherein gas-liquid mixed pipe caliber is 30 of the experimental installations of 125mm, 6 months on probation.The result shows, the foul smell disappearance does not have mud and piles up at the bottom of the pond, is 0.3ppm before the experiment of DO (dissolved oxygen) value, and middle DO (dissolved oxygen) value on probation remains on 4.0ppm basically.The air quantity of gas blower has also reduced 25%.

The above is merely the embodiment of explanation the utility model; Be not limited to the utility model; For a person skilled in the art; All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.

Claims

1. the aerating apparatus of a low gaseous tension loss; Comprise induction pipe and gas-liquid mixing head; It is characterized in that; Said gas-liquid mixed pipe bottom is inserted with induction pipe, and said gas-liquid mixed inside pipe wall is provided with water conservancy diversion flaps and rivet cap shape prominence, and said water conservancy diversion flaps top is provided with rivet cap shape prominence.

2. the aerating apparatus of low gaseous tension loss according to claim 1 is characterized in that: said water conservancy diversion flaps quantity is two, and said water conservancy diversion flaps is mutual cross-like and distributes.

3. the aerating apparatus of low gaseous tension loss according to claim 2 is characterized in that: said water conservancy diversion flaps is the crescent shape circular arc.

4. the aerating apparatus of low air resistance according to claim 1 is characterized in that: said rivet cap shape prominence is divided into two kinds of big rivet cap shape prominence and little rivet cap shape prominences.