CN201048513Y - Centrifugal type outer pipe aeration oxygenation machine - Google Patents

Abstract

A centrifugal outer tube aeration automatic aerator comprises a drive set, which is characterized in that: the drive set is connected with a capstan shaft; the capstan shaft from top to bottom is respectively provided with a pressurizing impeller and a combined revolving solid; the capstan shaft at the pressurizing impeller is outside sleeved by a oxygen inletting outer tube, and the lower end of the oxygen inletting outer tube is provided with the combined revolving solid; the outer side of the combined revolving solid is provided with an airscrew blade, and the lower end of the airscrew blade is provided with an extroversive type air-out channel. The centrifugal outer tube aeration automatic aerator has a simple structure and convenient maintenance. The air-in pressure and the air input are increased through the two groups of pressurizing impeller and the airscrew blade in the lower combined revolving solid; the air is thrown out from the extroversive type ring-shaped channel and is pressurized and broken up to form current aerated fully through the retroverted blade at the end to fully convect and increase oxygen in the whole water; therefore, the oxygen increasing effect is obviously improved at low energy consumption. The aeration automatic aerator can be widely applicable to the water oxygen increasing in aquiculture or sewage purification.

Description

Centrifugal outer tube aeration aerator

technical field

The utility model belongs to aeration equipment for aquaculture or sewage purification, in particular to a centrifugal outer tube aeration and oxygenation machine with remarkable oxygenation effect and large oxygenation range.

Background technique

At present, there are various types of aerators used in aquaculture or sewage purification, mainly including jet spray type, impeller type, waterwheel type and aeration type. Both the impeller type and the jet water spray type aerators use water to be sprayed out to make it contact with the air to achieve the purpose of oxygenation. The waterwheel type aerator uses blades to flap in shallow water to cause waves and increase the contact area between the water surface and the air to achieve oxygenation. The above-mentioned aerators can only increase oxygen on the surface water surface, and the harmful gas in the bottom water cannot be effectively eliminated, and the effect of increasing oxygen is not good. The existing aeration aerator uses a motor to drive air into the water to dissolve oxygen. Although the effect has been improved, the structure of the aeration aerator is very complicated, and at the same time it needs to form a large intake pressure, which consumes a lot of energy. of electric energy.

The inventor believes that the existing problems of the current aeration and aeration machines are mainly due to the unreasonable structural design. When the air enters the water body, it is in a vertical downward direction, and the buoyancy force it receives is relatively large, and the oxygen dissolution time in the water body is short. In order to realize air and water entering into a wider range, the direction of driving water flow is radial or axial direction, which cannot realize large-scale convection.

Contents of the invention

The purpose of the utility model is to provide a centrifugal outer tube aeration and oxygenation machine with simple structure, low energy consumption, large oxygenation range and large-scale aeration and convection, which solves the high energy consumption of the existing aeration and oxygenation machine , complex structure and small aeration range.

For realizing above-mentioned purpose of the invention, the technical scheme that the utility model adopts is as follows:

A centrifugal type outer tube aeration and aeration machine, including a driving device, is characterized in that the driving device is connected with a capstan, and the capstan is respectively provided with a supercharged impeller and a combined rotating body from top to bottom, and the capstan at the supercharged impeller is The jacket is covered with an oxygen inlet tube, and the lower end of the oxygen inlet tube is assembled with a combined rotating body. The outer side of the combined rotating body is provided with a propeller blade, and the lower end is provided with an outwardly inclined air outlet channel.

Specifically, the combined rotating body of the centrifugal outer tube aeration and aeration machine has an outer rotating shell that cooperates with the lower end of the oxygen inlet outer tube. An air outlet channel is formed between the bell mouth and the inner rotating housing with a bell mouth structure at the lower end.

The outer rotating case is fixedly connected with the inner rotating case, a helical blade is fixedly arranged between the upper part of the inner rotating case and the outer rotating case, and the upper end of the outer rotating case is connected with the capstan.

The upper end of the rotating shell outside the combined rotating body coincides end-to-end with the lower end of the oxygen inlet outer tube, and the propeller blades are terminal backward-tilted blades fixedly distributed on the outer wall of the outer shell.

The driving device is an electric motor or a mechanical driving device.

There are two booster impellers, which are respectively arranged on the main shaft at the upper port and the lower port of the oxygen inlet outer pipe.

The diameter of the lower end of the oxygen inlet outer pipe is smaller than the diameter of the upper end.

The air outlet passage at the lower end of the combined rotating body is a downward and flared annular passage.

The outer tube type aeration aerator has fewer components and a simple structure. Part of the oxygen inlet outer tube is located under the water surface. The gas fluid with high oxygen supply pressure can be continuously pressurized by the spiral blades in the combined rotating body, and finally, under the action of the rotating centrifugal force of the combined rotating body, it is thrown into the water body from the downwardly inclined annular air outlet channel at the lower end, and the end is tilted backward The deep water pressure generated by the rotation of the propeller increases the pressure of the air at the air outlet channel and the surrounding area. The air is crushed and stirred and fully dissolved and mixed with a large range of water bodies to form convection in the whole pool, so that the deep water and further water bodies can be fully absorbed. Oxygenation.

The beneficial effect of the utility model is that the centrifugal outer tube aeration and aeration machine has a simple structure and is convenient for maintenance. The air intake pressure and the intake air volume are increased by two sets of booster impellers and the spiral blades in the lower combined rotating body, and the air intake is increased by the external The inclined annular channel is thrown out, and is pressurized and crushed by the backward inclined blade at the end to form a fully aerated water flow, which fully convects the entire water body to increase oxygen, and significantly improves the oxygen increase effect under the condition of low energy consumption. The aeration and oxygenation machine can be widely used in water body oxygenation in aquaculture or sewage purification and other occasions.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment, the utility model is further elaborated.

Fig. 1 is a partial cross-sectional structure schematic diagram of the utility model.

Detailed ways

As shown in the figure, the centrifugal outer tube aeration aerator is mainly composed of a motor 1, a main shaft 4, booster impellers 2 and 5, a combined rotating body 6, and an oxygen inlet outer tube 3. The motor 1 is connected with the capstan 4, and two booster impellers 2 and 5 and a combined rotating body 6 are respectively installed on the capstan from top to bottom. The lower end of the tube shrinks inward to increase the intake pressure. The combined rotating body 6 has an outer rotating housing 7 that matches the lower end of the oxygen inlet outer tube. The lower end of the outer rotating housing is an externally expanding bell mouth, and the outer expanding bell mouth and the lower end have an inner rotating housing 10 with a bell mouth structure. A circular air outlet channel that slopes downwards and outwards is formed between them. The outer rotating case 7 is fixedly connected with the inner rotating case, the helical blade 9 is fixedly arranged between the upper part of the inner rotating case and the outer rotating case, and the upper end of the outer rotating case is connected with the capstan. The upper end of the outer rotating shell matches the lower end of the oxygen inlet outer pipe end to end, and the propeller blades 8 are fixedly distributed on the outer wall of the outer rotating shell. The propeller blade 8 is a terminal backward inclined blade.

Claims (8)

1. centrifugal outer tube aeration oxygen increasing machine, comprise drive unit, it is characterized in that connecting on the drive unit capstan, supercharging impeller and combination rotary body from top to bottom are set respectively on the capstan, the capstan overcoat at supercharging impeller place is put into the oxygen outer tube, advance oxygen outer tube lower end assembly rotary body, combination rotary body arranged outside propeller blade, its lower end is provided with the external inclined type outlet passageway.

2. centrifugal outer tube aeration oxygen increasing machine according to claim 1, it is characterized in that described combination rotary body have one with advance the inner rotary housing that oxygen outer tube lower end cooperates, inner rotary housing lower end is for extending out the shape horn mouth, and it extends out shape horn mouth and lower end has between the interior rotary shell of horn mouth structure and form outlet passageway.

3. centrifugal outer tube aeration oxygen increasing machine according to claim 2, it is characterized in that described inner rotary housing fixedlys connected with interior rotary shell, fixedly install helical blade between the top of interior rotary shell and inner rotary housing, the upper end of inner rotary housing connects capstan.

4. centrifugal outer tube aeration oxygen increasing machine according to claim 2, it is characterized in that the upper end of described combination rotary body inner rotary housing and enter oxygen outer tube lower end being end to end anastomosis, described propeller blade is terminal BI blade, and stationary distribution is at the outer wall of described shell body.

5. centrifugal outer tube aeration oxygen increasing machine according to claim 1 is characterized in that described drive unit is electromotor or mechanical actuation device.

6. centrifugal outer tube aeration oxygen increasing machine according to claim 1 is characterized in that described supercharging impeller is two, is separately positioned on the capstan of into oxygen outer tube upper port and lower port place.

7. centrifugal outer tube aeration oxygen increasing machine according to claim 1 is characterized in that describedly advancing the lower end caliber of oxygen outer tube less than its upper end caliber.

8. centrifugal outer tube aeration oxygen increasing machine according to claim 1, the outlet passageway that it is characterized in that the lower end of described combination rotary body are downward external inclined type circular passage.

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