CN202400897U - Lateral air inlet self-rotating air cutting aerator - Google Patents

Abstract

A self-rotating air-cutting aerator with side air intake, which is composed of a shell, a rotating shaft, and an impeller, and is characterized in that the shell is a drainage pipe for side air intake, and the air outlet end of the drainage pipe is provided with a flow guide of a guide bracket The cover, the lower end of the rotating shaft in the center of the shell is provided with a bearing and a bearing bracket, and a power impeller, an accelerating impeller, and a cutting impeller are installed on the rotating shaft, and each of the power impeller and the accelerating impeller constitutes a power component, which are arranged in front and rear along the airflow direction, and the cutting impeller Installed on the inner side of the shroud. Along the airflow direction, the horizontal distance H between the start of the shroud and the end of the drainage pipe is 0.25-0.4 times the diameter of the cutting impeller. The advantage is that the cutting impeller can be driven by the automatic power of the oxidizing air, and the bubbles generated by the decompression diffusion can be further cut into tiny bubbles, so as to reduce the particle size of the bubbles, increase the oxygen mass transfer area, improve the oxidation effect, and increase the oxygen utilization rate . It meets the requirements of the national cycle energy saving. It is suitable for oxidation treatment of various flue gas desulfurization slurry and wastewater.

Description

A self-rotating air-cutting aerator with lateral air intake

technical field

The utility model belongs to an aeration device for waste water treatment, in particular to a device for oxidation treatment of desulfurization slurry and waste water. An aeration device that uses oxidized air as the rotating power of a cutter to cut oxidized air, reduce the particle size of its bubbles, increase the uniformity of bubble release, and improve the oxygen transfer rate. the

Background technique

At present, aeration devices have been widely used in the forced oxidation of flue gas desulfurization. Generally, fixed air injectors, jet aerators, agitator-air spray gun aerators, rotary air injectors are used, and perforated diffusers are also used. Aerators, plate aerators, diaphragm aerators, variable microporous disc aerators, hose aerators, umbrella aerators, rotary cut aerators. The existing aeration device is dealing with the oxidation treatment of desulfurization waste liquid. In order to prevent the clogging of the aeration device, the aperture of the aeration hole is set larger, resulting in a larger particle size of the oxidized air bubbles, poor oxygen mass transfer effect, and low oxygen utilization rate. the

Contents of the invention

The purpose of this utility model is to design and manufacture a side air intake self-rotating air cutting aerator, which uses the oxidized air itself as a power source to make the cutting impeller generate strong rotation and cut oxidized air, reduce the particle size of its bubbles, increase Oxidize the specific surface area of air bubbles, increase the efficiency of oxygen mass transfer, and improve the utilization rate of oxidized air. the

The technical scheme of the utility model is a self-rotating air-cutting aerator with lateral air intake, which is composed of a housing, a rotating shaft and an impeller. The housing is a drainage pipe for lateral air intake. The deflector cover of the deflector bracket, the lower end of the rotating shaft in the center of the shell is provided with a bearing and a bearing bracket, and a power impeller, an accelerating impeller, a cutting impeller are installed on the rotating shaft, and each of the power impeller and the accelerating impeller constitutes a power component; the cutting impeller is set Inside the shroud area. the

As mentioned above for the lateral self-rotating air cutting aerator, the power impeller adopts a multi-wing single-inlet impeller, the accelerating impeller adopts a forward impeller, and the cutting impeller adopts a radial impeller. the

As for the above-mentioned lateral self-rotating air-cutting aerator, along the airflow direction, the horizontal distance between the starting end of the shroud and the end of the drainage pipe is 0.25-0.4 cutting impeller diameter. the

The utility model has the advantage that the self-advancement of the oxidizing air and the energy of decompression and expansion can be used as the driving force for the rotation of the cutter. The high-speed rotation of the cutter breaks up the oxidized air released by diffusion, and cuts the air bubbles to reduce their particle size, so as to improve the oxygen mass transfer rate and oxygen utilization rate. The oxidation air used by the device can come from a Roots blower or a high-pressure centrifugal blower, which has high applicability to air sources and is suitable for oxidation treatment of various flue gas desulfurization waste liquids and wastewater. the

Description of drawings

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

Figure 1 is a schematic diagram of the structure of a side-inlet self-rotating air-cutting aerator of the utility model

Figure 2 is a side view of Figure 1

In the figure, 1-power impeller, 2-accelerating impeller, 3-cutting impeller, 4-bearing, 5-rotating shaft, 6-bearing bracket, 7-guiding cover, 8-guiding bracket, 9-drainage pipe, 10- Horizontal distance between the screen, the beginning of the H-shroud and the end of the drainage pipe

Detailed ways

It can be seen from Figures 1 and 2 that a side air inlet self-rotating air cutting aerator of the present utility model is composed of a housing, a rotating shaft and an impeller. The wind deflector 7 is provided with a deflector bracket 8 at the end, the lower end of the rotating shaft 5 in the center of the housing is provided with a bearing 4 and a bearing bracket 6, and a power impeller 1, an accelerating impeller 2, a cutting impeller 3, and a power impeller are installed on the rotating shaft , 1 accelerating impeller, which jointly constitute the power components, arranged in front and back along the airflow direction; the cutting impeller is arranged inside the guide cover; the air outlet is provided with a screen 10. the

The power impeller adopts a multi-wing single-inlet impeller, the accelerating impeller adopts a forward impeller, and the cutting impeller adopts a radial impeller; along the direction of air flow, the horizontal distance H between the starting end of the shroud 7 and the end of the drainage pipe 9 is 0.25-0.4 times the cutting impeller diameter. the

The working principle and usage method of the utility model are as follows: the oxidizing air flows laterally into the drainage pipe 9 at high speed, flows through the power impeller 1 to generate power to rotate the rotating shaft 5, and flows through the accelerating impeller 2 to increase the rotating speed of the rotating shaft 5. When the oxidizing air flows to the outlet end of the drainage pipe 9, the oxidizing air decompresses and diffuses to form bubbles of different sizes, and then diffuses further after passing through the shroud 7, and the liquid also enters the shroud 7 through the gap between the shrouds 8 , mixed with oxidizing air bubbles, cut and broken into tiny bubbles by the high-speed rotating cutting impeller 3, and then flow out of the shroud for further diffusion after passing through the screen 10 to increase the degree of turbulence in the mixing of soda and water. the

Claims (3)

1. A self-rotating air-cutting aerator with lateral air intake, consisting of a housing, a rotating shaft, and an impeller, characterized in that the housing is a drainage pipe for lateral air intake, and the air outlet end of the drainage pipe is provided with a guide bracket In the shroud, the lower end of the rotating shaft in the center of the housing is provided with a bearing and a bearing bracket. The rotating shaft is equipped with a power impeller, an accelerating impeller, a cutting impeller, and each of the power impeller and the accelerating impeller constitutes a power component, which are arranged front and back along the direction of air flow. The cutting impeller is arranged inside the shroud. 2. A side-inlet self-rotating air-cutting aerator as claimed in claim 1, wherein the power impeller adopts a multi-wing single-inlet impeller, the accelerating impeller adopts a forward impeller, and the cutting impeller adopts a radial impeller . 3. A kind of lateral air inlet self-rotating air cutting aerator as claimed in claim 1, characterized in that, along the airflow direction, the horizontal distance H between the initial end of the shroud and the end of the drainage pipe is 0.25-0.4 times the cut Diameter of impeller.

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