CN2632076Y

CN2632076Y - Jetting aeration distributor

Info

Publication number: CN2632076Y
Application number: CNU032677421U
Authority: CN
Inventors: 浦跃武
Original assignee: South China University of Technology SCUT
Current assignee: South China University of Technology SCUT
Priority date: 2003-07-21
Filing date: 2003-07-21
Publication date: 2004-08-11
Anticipated expiration: 2013-07-21

Abstract

The utility model discloses a jet aeration distributor, which comprises a distributor parent tube connected between the tail pipe of a jet aeration device and a tangent distributor pipe. The axis of the exit end of the tangent distributor pipe is tangential to circle around the axis of the distributor parent tube and slopes downward. Without increasing the energy consumption of the jet aeration device, the jet aeration distributor makes the fluid body rotatingly flow in a horizontal direction via circumferential tangent jet fluid body, therefore, increasing the contact time of the gas and liquid phases, improving the dissolving rate of oxygen with apparent effects. The utility model is suitable for aeration tank with different depth and has wide application scope.

Description

The jet aeration sparger

Technical field

The utility model relates to a kind of sewage jet aeration treatment unit, particularly a kind of jet aeration sparger.

Background technology

Jet aeration is a kind of sewage biochemical processing commonly used.In existing jet aeration device, general action mode is that gas-liquid mixture directly axially sprays along the injector tail pipe, perhaps gas-liquid mixture is axially sprayed along the nozzle 1 of sparger, perhaps use another kind of multi-nozzle sparger (as shown in Figure 2) to make gas-liquid mixture radially become the nozzle 2 at certain inclination angle circumferentially to spray on every side and with the injector tail pipe to the injector tail pipe along being uniformly distributed in the injector tail pipe by a multi-nozzle sparger (as shown in Figure 1) that is installed on the injector tail pipe; These modes of action all are simply gas-liquid mixture to be sprayed in the aeration tank and can not make fluid in the aeration tank produce the rotational flow of horizontal direction, and the duration of contact of gas-liquid two-phase is shorter, makes the raising of dissolved oxygen efficiency be subjected to certain restriction.

Summary of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of simple in structure, can make in the aeration tank fluid produce horizontal direction rotational flow, the effective jet aeration sparger of aeration.

The purpose of this utility model is achieved through the following technical solutions: this jet aeration sparger comprises the sparger parent tube, and the sparger parent tube is connected with jet aeration device tail pipe, it is characterized in that the sparger parent tube is connected with the tangent line distribution pipe.

The axis of described tangent line distribution pipe exit end is tangent with the circumference that with sparger parent tube axis is the center of circle.

The axis of described tangent line distribution pipe exit end is with respect to the horizontal plane downward-sloping, and the angle of its inclination is 0 °～70 °.

Described tangent line distribution pipe axially be distributed in symmetrically and evenly the sparger parent tube around.

The quantity of described tangent line distribution pipe is 2～10.

Being shaped as of described tangent line distribution pipe

Shape or Shape.

Described tangent line distribution pipe is connected in the circumferential dispensing orifice of sparger parent tube, and its mode of connection can link with flange, welding, screw thread or with glue is bonding.

Also be provided with the water conservancy diversion cone in the described sparger parent tube, the water conservancy diversion cone is arranged on the sparger parent tube symmetry axis, its objective is the minimizing fluid impedance losses.

Described sparger parent tube and jet aeration device tail pipe can link with flange, welding, threaded fitting or with glue is bonding.

This jet aeration sparger also can comprise the internal recycle guide, and the internal recycle guide is installed on the jet aeration device tail pipe outside and is positioned at sparger parent tube top.

Described internal recycle guide is connected with jet aeration device tail pipe by spoke or disc.

Action principle of the present utility model is: when gas-liquid mixture when the tangent line distribution pipe of jet aeration device tail pipe by this jet aeration sparger flows out downwards, utilizing the fluidic tangential jet to make one of fluid generation in the aeration tank is the horizontal direction rotational flow in the center of circle with the sparger, and gas-liquid mixture is prolonged duration of contact; Simultaneously, fluidic pressure difference in the aeration tank that the horizontal direction rotation that utilizes sparger to produce is caused, make fluid in the internal recycle guide, produce flowing from top to bottom, can drive portion gas motion from top to bottom in the internal recycle guide like this, prolonged the duration of contact of gas-liquid two-phase, improve dissolved oxygen efficiency.

The utility model has following advantage and effect with respect to prior art: under the prerequisite that does not increase the jet aeration plant energy consumption, by circumferential tangential jet fluid, make fluid produce the rotational flow of a horizontal direction, the duration of contact of increase gas-liquid two-phase, improve dissolved oxygen efficiency; Because fluid is the action mode that sprays downwards, has enough strokes to realize contacting dissolved oxygen so guarantee fluid easily, thereby this jet aeration sparger goes for the aeration tank of the various degree of depth to the not strict requirement of fitting depth; In addition, this jet aeration sparger utilizes the pressure difference that rotational flow produced of horizontal direction can realize the motion from top to bottom of portion gas in the internal recycle guide, has increased the duration of contact of gas-liquid two-phase, has improved the utilization ratio of gas; This jet aeration sparger is by the keying action of tangent line distribution pipe and internal recycle guide, can make the mixing of gas in the aeration tank, liquid, active sludge more even, helps mass transfer; Experimental results show that under the prerequisite that does not increase the jet aeration plant energy consumption, dissolved oxygen efficiency can improve 5～15% after using this jet aeration sparger, effect improves highly significant.

Description of drawings

Fig. 1 is the structural representation of existing multi-nozzle sparger.

Fig. 2 is the structural representation of existing another kind of multi-nozzle sparger.

Fig. 3 is the structural representation of the utility model jet aeration sparger.

Fig. 4 is the vertical view of jet aeration sparger shown in Figure 3.

Embodiment

Below in conjunction with example and accompanying drawing the utility model is done further concrete description, but embodiment of the present utility model is not limited thereto.

Embodiment

Fig. 3～Fig. 4 shows embodiment of the present utility model, as seen from Figure 3, this jet aeration sparger comprises sparger parent tube 8, and the bottom of sparger parent tube 8 circumferentially is evenly distributed with four dispensing orifices 11 that connect tangent line distribution pipe 9, as shown in Figure 4, four are shaped as

The tangent line distribution pipe 9 of shape adopts modes such as screw thread, flange, welding, glue connection to be connected with four distribution holes 11, be provided with a water conservancy diversion cone 7 in sparger parent tube 8 bottoms, water conservancy diversion cone 7 is positioned on the symmetry axis of sparger parent tube 8, sparger parent tube 8 is connected by flange 6 with the tail pipe 3 of jet aeration device, also can adopt modes such as screw thread, welding to connect; The tubular axis line of the exit end 10 of tangent line distribution pipe 9 be that the circumference in the center of circle is tangent and with respect to the horizontal plane downward-sloping 30 °～60 ° with sparger parent tube 8 axis; This jet aeration sparger also comprises internal recycle guide 4, internal recycle guide 4 is installed on jet aeration device tail pipe 3 outsides and is positioned at sparger parent tube 8 tops, aeration tank water surface below, and internal recycle guide 4 is connected with jet aeration device tail pipe 3 with the 3 coaxial installations of jet aeration device tail pipe and by spoke 5.

Action principle of the present utility model is: when gas-liquid mixture sprays downwards along the tangent line aspect through jet aeration device tail pipe 3, sparger parent tube 8 and tangent line distribution pipe 9, can make the fluid in the aeration tank form rotatablely moving of horizontal direction, prolonged the path of the gas arrival aeration tank water surface, thereby increased gas, liquid biphase duration of contact, improved the dissolved oxygen effect; Simultaneously, because the axis with sparger parent tube 8 that forms at the aeration tank inner fluid is the rotatablely moving of horizontal direction in the center of circle, circle centre position pressure is reduced, and the pressure of internal recycle guide 4 upsides is higher relatively, so in internal recycle guide 4, form fluid flowing from top to bottom, and circulate, can drive portion gas motion from top to bottom in internal recycle guide 4 like this in the 4 inside and outside generations of internal recycle guide, increase the duration of contact of gas-liquid two-phase, improve the utilization ratio of gas; Since above-mentioned rotatablely move with and circulate, can make the mixing of gas in the aeration tank, liquid, active sludge more even, help mass transfer.After using this jet aeration sparger, under the prerequisite that does not increase the jet aeration plant energy consumption, dissolved oxygen efficiency improves 5～15%, the effect highly significant.

Claims

1, a kind of jet aeration sparger comprises sparger parent tube (8), and sparger parent tube (8) is connected with jet aeration device tail pipe (3), it is characterized in that: sparger parent tube (8) is connected with tangent line distribution pipe (9).

2, jet aeration sparger according to claim 1 is characterized in that: the axis of described tangent line distribution pipe (9) exit end is tangent with the circumference that with sparger parent tube axis is the center of circle.

3, jet aeration sparger according to claim 2 is characterized in that: the axis of described tangent line distribution pipe (9) exit end (10) is with respect to the horizontal plane downward-sloping, and the angle of its inclination is 0 °～700 °.

4, according to claim 1 or 2 or 3 described jet aeration spargers, it is characterized in that: described tangent line distribution pipe (9) axially be evenly distributed on sparger parent tube (8) around.

5, according to claim 1 or 2 or 3 described jet aeration spargers, it is characterized in that: the quantity of described tangent line distribution pipe (9) is 2～10.

6, according to claim 1 or 2 or 3 described jet aeration spargers, it is characterized in that: being shaped as of described tangent line distribution pipe (9) "

" shape or " " shape.

7, jet aeration sparger according to claim 1 is characterized in that: described tangent line distribution pipe (9) is connected by flange, welding, screw thread or with the circumferential dispensing orifice (11) of bonding mode of glue and sparger parent tube (8).

8, jet aeration sparger according to claim 1 is characterized in that: be provided with water conservancy diversion cone (7) in the described sparger parent tube (8), water conservancy diversion cone (7) is arranged on the symmetry axis of sparger parent tube (8).

9, jet aeration sparger according to claim 1 is characterized in that: comprise internal recycle guide (4), internal recycle guide (4) is installed on jet aeration device tail pipe (3) outside and is positioned at sparger parent tube (8) top.

10, jet aeration sparger according to claim 9 is characterized in that: described internal recycle guide (4) is connected with jet aeration device tail pipe (3) by spoke (5) or disc.