CN2138120Y

CN2138120Y - Liquid-air multiple nozzles jet aerator

Info

Publication number: CN2138120Y
Application number: CN92239267U
Authority: CN
Inventors: 周斌
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-11-04
Filing date: 1992-11-04
Publication date: 1993-07-14
Anticipated expiration: 2002-11-04

Abstract

The utility model relates to a liquid air-liquid jetting steam aerator with multiple nozzles. A flange (1) is connected with a liquid suction pipe connected with nozzles; a flange (3) is welded with an air suction pipe (4) of which one end is connected with a hollow throat and a diffusion pipe; the end of the diffusion pipe is connected with a flange (15) connected with another flange (16) by screws and screw nuts; the flange (16) is connected with a liquid suction pipe (13) and is connected with a second stage hollow throat and a diffusion pipe; a spray head (14) with multiple nozzles is arranged in a liquid suction chamber. The turbulent motion action of air liquid and liquid flow and the action of the hollow throat and the diffusion pipes, air phase and liquid phase are mixed to be a homogeneous medium, and the oxygen utilization efficiency is increased.

Description

Liquid-air multiple nozzles jet aerator

The utility model relates to a kind of many nozzles of liquid solution-air jet aerator, belongs to the technical field of oxygen supply equipment.

At present; aerobic biochemical is handled the important means that has become second-stage treatment in the environment protection; normally used blast aeration; oxygen supply equipments such as surface aeration are big because of noise again, and coefficient of oxygen utilization is low, and investment and working cost are all higher all to be restricted its application and further development; existing jet aerator also begins to adopt at home; its shortcoming is that power consumption is big, and coefficient of oxygen utilization is on the low side, demands urgently improving.

The purpose of this utility model is that a kind of many nozzles of liquid solution-air jet aerator will be provided, and it can overcome above-mentioned shortcoming.

The purpose of this utility model is to realize like this, aerator partly is made up of liquid gas and liquid solution-air aeration two, and its liquid gas aeration part is made up of gas suction pipe, nozzle, trunnion and diffuser tube, and liquid solution-air aeration part is by the liquid suction chamber, chew shower nozzle, trunnion and diffuser tube are formed more.

Fig. 1 liquid solution-air many nozzles jet aerator (left part)

Fig. 2 liquid solution-air many nozzles jet aerator (middle part)

Fig. 3 liquid solution-air many nozzles jet aerator (right part)

The A-A sectional view of Fig. 4 accompanying drawing 1

The B-B sectional view of Fig. 5 accompanying drawing 2

The synoptic diagram of Fig. 6 gas suction chamber

The C-C sectional view of Fig. 7 Fig. 6

The synoptic diagram of Fig. 8 liquid suction chamber

The D-D sectional view of Fig. 9 Fig. 8

Figure 10 chews the synoptic diagram of shower nozzle more

Now in conjunction with the accompanying drawings the structure of many nozzles of liquid solution-air jet aerator is described in further detail:

Fig. 1 is aerator (left part) synoptic diagram, flange (1) is integrally welded with the left end of liquid tail pipe (2), the right-hand member of tail pipe (2) welds with taper nozzle (6) again, flange (3) is integrally welded with gas suction pipe (4), gas suction pipe (4) middle part is a right cylinder, the right side is cone (25), and the left side is that a disk (21) is combined into one, and the right-hand member of tail pipe (4) is about 1300 millimeters one-level trunnion (7) with a length again and welds mutually.

Fig. 2 is the middle part synoptic diagram of aerator, the right-hand member of one-level trunnion (7) and one-level diffuser tube (8) welding, diffusion (8) also is a cone, it is right cylinder that the right-hand member of diffuser tube (8) has a bit of, weld mutually with a flange (15), a left end welding flange (16) of liquid suction chamber (13), right-hand member is mutually integrally welded with a secondary trunnion (18) again, fluid intake (17) is arranged in the liquid suction chamber (13), and many nozzles shower nozzle (14) is housed, flange (15), (16) be lined with flange packing (12) between, use screw (10) then, packing ring (9), nut (11) connects.

Fig. 3 is aerator (right part) synoptic diagram, secondary trunnion (18) is integrally welded with the secondary diffuser tube (19) of taper, the right-hand member of diffuser tube (19) is welded with retaining plate (20), and retaining plate (20) is that rectangular plate is welded in above the annulus, and connecting hole (23) is arranged.Fig. 1, Fig. 2 and Fig. 3 are combined into a complete aerator.

Fig. 4 is the A-A sectional view of accompanying drawing 1

Flange (3) is welded into one with gas suction pipe (4), the end of tail pipe (4) and gas suction chamber (5) welding.

Fig. 5 is the B-B sectional view of accompanying drawing 2, retaining plate (20) is a rectangular plate, its inner face is that circular arc is connected with a torus (22) and is integral, torus (22) is welded in above the secondary diffuser tube (19), totally 4 of retaining plates, uniform distribution around the edge has connecting hole (23) on the retaining plate (20).

Fig. 6 is the sectional view of gas suction chamber, gas suction chamber (5) be one section pipe and one section cone (25) combine form, one side perforation forms a gas admission port (24), the gas suction pipe (4) of can packing into, cone (25) also is the inlet of one-level trunnion, and tapering is about 14 ° 2 ' 10 ".

Fig. 7 is the C-C sectional view of Fig. 6.

Fig. 8 is the synoptic diagram of liquid suction chamber, Fig. 9 is the D-D sectional view of accompanying drawing 8, liquid suction chamber (13) also is that one section pipe and one section cone are formed, pipe part porose (17), fluid intake (17) just, the tapering of conical part is 14 ° 59 ' 42 ", conical part is secondary trunnion inlet (26) just.

Figure 10 is a synoptic diagram of chewing shower nozzle more, and chew shower nozzle (14) is a right cylinder more, and it has the hole (26) of 4 inclinations, and the tapering in hole is about 4 ° 34 ' 52 ".

Principle of work is as follows:

There is the sewage of pressure to flow into from flange (1) liquid tail pipe (2), spray by nozzle (6), because the viscous effect between jet boundary layer and gas, air is drawn into the gas suction chamber (5) from gas suction pipe (4) goes, because the interaction of jet and air, the influence of nozzle surfaceness, make the jet surface form wavy, development along with surface-duided wave, cause jet to break and form dripping shape liquid, it to be colliding at a high speed and pressurized air, and it is ground into micro-bubble, at this moment drop again polymerization become the emulsus mixed solution of gassiness bubble, this mixed solution enters after the diffuser tube (8), cone reduces flow velocity, but the pressure increase, bubble is subjected to further compression, so liquid gas two-phase medium enters liquid suction chamber (13), eject by chewing shower nozzle (14) again, because effusive turbulent fluctuation diffusion and the effect of carrying under one's arms are drawn into liquid suction chamber (13) with sewage from fluid intake (17) again more; In suction chamber (13) and trunnion (18), again because the disorderly diffusion of the expansion of the gas phase media in the working liquid and effusive, working liquid and absorbed sewage carry out the transmission of energy and quality, thereby progressively become uniform two-phase mixed stream, and the kinetic energy of mixed solution partly changes pressure energy in diffuser tube, the back gaseous media that expands is compressed again, after boosting, mixed two-phase medium self-diffusion pipe discharges, in said process, on the one hand because air is crushed into micro-bubble through twice, and be compressed, oxygen is transferred in the liquid, and the active sludge in the sewage is cut into less bulk tissue by twice jet on the other hand, has also increased the transducing area and the time of it and air, simultaneously it can directly oxygen uptake from bubble, has also increased the activity of mud.

Compared with prior art, many nozzles of liquid solution-air jet aerator has following advantage:

1, compare with similar aerator, the oxygen uptake rate height, power consumption is low.

2, owing to use many nozzles, increased the contact area of jet and gas, increased the turbulent fluctuation effect of gas-liquid two-phase, so the energy transfer efficiency height, oxygen-transfer efficiency is 3.14～3.78kgO ₂, kwh, so the high generous % of dynamic efficiency.

3, simple in structure, cost is low, and is easy to maintenance.

Claims

1, a kind of many nozzles of liquid solution-air jet aerator, it is characterized in that flange (1) and liquid tail pipe (2) left end are welded into one, tail pipe (2) right-hand member and nozzle (6) welding, flange (3) and gas suction pipe (4) welding, tail pipe (4) right-hand member welds mutually with a trunnion (7) again, trunnion (7) welds with diffuser tube (8) again, the right-hand member of diffuser tube (8) and flange (15) welding, liquid suction chamber (13) left end welds a flange (16), right-hand member welds mutually with trunnion (18) again, fluid intake (17) is arranged in the liquid suction chamber (13), and many nozzles shower nozzle (14) is housed, flange (15), flange packing (12) is arranged, with screw (10) (16), packing ring (9), nut (11) is connected, and trunnion (18) is connected with retaining plate (20) successively with diffuser tube (19).

2, aerator according to claim 1 is characterized in that liquid suction chamber (13) is that one section pipe and one section cone are formed, pipe part porose (17), and fluid intake (24) just, conical part are trunnion inlets (26).

3, aerator according to claim 1 is characterized in that retaining plate (20) is a rectangle, and its inner face is a circular arc, is connected as a body with a torus (22), and 4 fixed blocks retaining plate (20) on have connecting hole (23) along uniform all around.