CN2866493Y

CN2866493Y - Submersible propelling aerator

Info

Publication number: CN2866493Y
Application number: CNU2006200687429U
Authority: CN
Inventors: 杜诚
Original assignee: NANJING BEITE ENVIRONMENTAL PROTECTION GENERAL EQUIPMENT MANUFACTURING Co Ltd
Current assignee: NANJING BEITE ENVIRONMENTAL PROTECTION GENERAL EQUIPMENT MANUFACTURING Co Ltd
Priority date: 2006-01-24
Filing date: 2006-01-24
Publication date: 2007-02-07
Anticipated expiration: 2016-01-24

Abstract

A utility model relates to a dive plug flow aerator which belongs to the water treatment technology field. The aerator comprises a dive motor supported at the bearing seat of the casing two ends, wherein the output terminal of the dive motor is fixedly connected with a plug flow oar. The improvements of the dive motor are that between the output terminal and the casing is a room connected with an input tube which communicates with the aeration head central tube that extends to the front end of the plug flow oar. The aeration head is consist of a central tube and a sheering blade and is fixedly connected with the plug flow oar. The central tube is provided with an air outlet and is connected with radical direction and uniform distribution sheering blades. The air room and the central tube of the utility are in a barotropicState all long, thereby no sophisticated measures are needed. Provided with a relative simple and compact configuration and also reasonable impellers engaging with each other, the solubility of oxygen is improved obviously.

Description

Diving pulling flow type aerator

Technical field

The utility model relates to a kind of aerator, and especially a kind of diving pulling flow type aerator belongs to the water treating equipment technical field.

Background technology

Aeration and plug-flow (stirring) are topmost technical process in the sewage biochemical treatment Activated Sludge Process, height to sewage treating efficiency plays the crux effect, also is the flow process of biochemistry pool (as oxidation ditch, SBR pond, aerating filter etc.) energy expenditure maximum simultaneously.

Retrieval is found, application number is that the Chinese patent of CN03219365.3 discloses a kind of diving aeration machines, these facility have airduct, negative pressure cover, impeller, directed dispenser, guide shell and submersible machine, submersible machine is fixed on the bottom of directed dispenser, and submersible machine stretches on axially in the chamber of directed dispenser or submersible machine is fixed on the negative pressure cover and the submersible machine axially downwardly extending is gone in the chamber of directed dispenser; Impeller is a helical runner; The guide shell water inlet is in the top of guide shell, its water inlet under user mode apart from the water-in of 3 centimetres to 25 centimetres of liquid levels.It is introduced that it is floating and cause the problem of aerobic bacteria mass mortality that this machine can solve the liquid level bubble under without the situation of sprinkling equipment.

Yet the diving aeration machines structure of this suction type obviously exists easy seepage, the complicated weak points such as seal approach of needs.

The utility model content

The purpose of this utility model is: at the deficiency that above prior art exists, propose a kind of simple and compact for structure, positive-pressure type diving pulling flow type aerator that dissolved oxygen efficiency is high.

In order to reach above purpose, diving pulling flow type aerator of the present utility model comprises the submersible machine that is supported on housing two end axles bearing, the output terminal of described motor is fixedlyed connected with plug-flow leaf slurry, its improvements are, it between the output terminal of described motor and the housing air chamber that taps into tracheae, described air chamber communicates with the aeration head pipe core that extends to plug-flow leaf slurry front end, described aeration head is combined by pipe core and shearing blade, be connected with plug-flow leaf slurry, be connected the outward shearing blade of radial equipartition of described pipe core has production well on the described pipe core.

During work, the high-pressure air that is entered air chamber by inlet pipe sprays at a high speed from production well by pipe core, forms bubble.The combined impeller high speed rotating that driven by motor plug-flow impeller and aeration head constitute, at a high speed, the cutting further broken by the shearing blade of high speed rotating of the small bubbles of ejection in ejection moment tear the tiny bubble of poling and with the water thorough mixing, plug-flow leaf oar is pushed ahead the tiny bubble of wrapped folder in water together in company with current, make bubble be diffused into broad waters, thereby finish required aeration operation.

Understand easily, air chamber of the present utility model, pipe core are in barotropic state all the time, therefore need not complicated seal approach, and structure is simple relatively compact, and the reasonably combined impeller work that cooperatively interacts can significantly improve dissolved oxygen rate.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is the structural representation of an embodiment of the utility model.

Embodiment

Embodiment one

The diving pulling flow type aerator of present embodiment as shown in Figure 1, submersible machine 8 is installed in the aerator housing, is supported on the bearing support 7 at housing two ends, by mechanical seal device 6 sealing.It between the output terminal of motor 8 and the housing air chamber 4 that taps into tracheae 5.This air chamber communicates by the pipe core of bowl-type pod with the aeration head 2 that extends to plug-flow leaf slurry front end, and aeration head is combined by pipe core and shearing blade 1, is connected with plug-flow leaf slurry.Pod is fixedlyed connected with the output terminal of submersible machine 8, the outside surface plug-flow leaf slurry 3 that is connected radially.Be connected the outward shearing blade 1 of radial equipartition of the pipe core of aeration head 2 has the production well of arranging vertically on the pipe shaft of pipe core.

During work, aerator is placed under water, and motor shaft directly drives the combined impeller of plug-flow impeller and aeration head formation, rotates with per minute 100-1000 rotary speed.When the sewage disposal flow process at aeration aerating during the stage, the pressure air that gas blower produces enters the air chamber that is positioned under water through inlet pipe, again from the pore high speed ejection of aeration head pipe core.Because shearing blade and plug-flow leaf oar are equipped with in the aeration head outside, the small bubbles of ejection will spray moment by the shearing blade fragmentation of high speed rotating at a high speed, and countless superfine little bubbles are torn in cutting, with the water thorough mixing.Plug-flow leaf oar is pushed ahead the tiny bubble of wrapped folder in water together in company with current, makes bubble be diffused into farther wideer waters.

When only needing to stir, stop air feed and get final product, the running under water of plug-flow leaf slurry is stirred current, thereby is avoided in the air admission water.As required, its working speed and oxygenation capacity can be designed to constant speed perseverance (stream) amount and speed change change (stream) amount.The speed change variable can be carried out automatic control by frequency transformer (or multipolar machine) by PLC on a time period according to different processing requirements again, to obtain best sewage treatment process effect and minimum energy consumption.

Experiment shows that the aerator of present embodiment has following characteristics:

1, dissolved oxygen efficiency height, service area is big.The height of dissolved oxygen efficiency is directly proportional with bubble and the degree of depth of water contacted specific surface area, the time that contacts with water, water, the distance that moves in water, the speed that spreads in water under same operating mode, is inversely proportional to the gas probability that collision mutually merges that ducks in drink.Bubble is through aeration head and the fragmentation of blade two-stage, thereby bubble ratio jet-flow aeration, centrifugal aeration are littler.Bubble with the water thorough mixing after, be forward by plug-flow leaf oar rapidly again that covering of the fan is pushed a distant place to and diffusion is come, can significantly reduce that oxygenation supersaturation and bubble hit merge probability near the spout.Because water body is helical and pushes ahead under the effect of spiral leaf oar, small bubbles are moving forward and are slowly also stirring up and down with current are linear in the shape of a spiral in the uphill process, therefore its movement locus has extended, thereby prolonged the time that contacts with water and the stroke in water greatly, therefore had higher dissolved oxygen efficiency than micro-pore aeration (risings of bubble straight line), jet-flow aeration (being oblique line rises), centrifugal aeration (being the flat spin rising).This machine fitting depth under water can reach 30 meters, and all right downward-sloping 15 °～45 ° installations of level make bubble earlier downwards, slowly rise again, are anti-parabolic path and move, and can reach darker farther waters, have prolonged the underwater residence time more.

2, Technological adaptability is good, the Energy Efficiency Ratio height.This machine aeration and plug-flow churning time can be given arbitrarily, and the speed change unsteady flow can be adjusted rotating speed and tolerance automatically by the water technology curve requirement of setting, and therefore can obtain best wastewater treatment efficiency.This machine is only leaf oar rotation when plug-flow stirs, and stops air feed, and jet aerator, centrifugal aerator only just can play stirring action when aeration, if only be used for stirring, then will consume bigger power, so generally do not use as stirrer.The waterpower whipping performance of spiral leaf oar is better than former formula centrifugal impeller and jet type injecting stirring simultaneously, so its unit consumption of energy is littler.

3, compact construction, a tractor serves several purposes, equipment does not have civil engineering costs, maintenance is installed conveniently.This machine aeration, stirring unification, anhydrous pipe network down, no civil engineering.When installation, lifting, maintenance, without draining, installation system of providing for oneself under water and tackling system waterborne can conveniently be installed the location and lift by crane.

4, reliable, do not have to stop up not have and twine.The leaf oar is designed to anti-winding-type.

In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.

Claims

1. diving pulling flow type aerator, comprise the submersible machine that is supported on housing two end axles bearing, the output terminal of described motor is fixedlyed connected with plug-flow leaf slurry, it is characterized in that: be the air chamber that taps into tracheae between the output terminal of described motor and the housing, described air chamber communicates with the aeration head pipe core that extends to plug-flow leaf slurry front end, described aeration head is combined by pipe core and shearing blade, be connected with plug-flow leaf slurry, be connected the outward shearing blade of radial equipartition of described pipe core has production well on the described pipe core.

2. according to the described diving pulling flow type of claim 1 aerator, it is characterized in that: described air chamber communicates by the pipe core of bowl-type pod with the aeration head that extends to plug-flow leaf slurry front end, described pod is fixedlyed connected with the output terminal of submersible machine, the outside surface plug-flow leaf slurry that is connected radially.

3. according to the described diving pulling flow type of claim 2 aerator, it is characterized in that: have the production well of arranging vertically on the pipe shaft of described pipe core.