KR19990002299U - Impeller of low speed gun - Google Patents

Abstract

The present invention relates to an impeller of a low speed aeration machine, the impeller of the low speed aeration machine according to the present invention is provided with an injection angle control plate on top of a conventional 45-degree low speed aeration machine to use two functions of oxygen transfer capacity and agitation capacity. And it can be adjusted according to the user's driving state is the device to enable efficient operation by adjusting the two functions of the aeration machine most appropriately depending on the shape of the tank, shallow and wide and deep and narrow.

Description

Impeller of low speed gun

The present invention relates to an impeller of a low speed foaming machine, and in particular, the injection angle control plate is provided on the upper part of the conventional 45 degree spraying low speed width apparatus so that the two functions of oxygen transfer ability and agitation ability can be adjusted according to the use and user operating state. It relates to an impeller of a low speed gun.

Aeration machine is a device for dissolving air in water in biological and chemical treatment processes in general, and is mainly used for oxygen supply.

There are many ways to classify the aeration group into a structural form, but if it is classified according to the principle of operation, it is largely divided into abandonment and underwater aeration. Also, it is divided into high speed aeration and low speed aeration according to the use of reducer.

The surface aeration machine is divided into spray type and self-suction type according to the contact method of air and water, and the device of the present invention belongs to the spray type low speed surface aeration machine.

The surface aeration machine has the ability to deliver oxygen and agitation function to agitate the water at the same time, especially the periphery and bottom portion of the water tank is important to the stirring ability, overall oxygen transfer capacity is important to the shape and purpose of the water tank Therefore, the above two functions should be adjusted to be appropriately harmonized.

Abandonment machines have their strengths and weaknesses for each model, and will use the appropriate format according to their purpose.

1A and 1B are views illustrating an example of an impeller of aeration machine according to the prior art.

Referring to the drawings, the impeller of the conventional aeration machine constitutes a cone center 3 around the rotation axis 5, the cone center 3 is configured so that the cone surface 9 is inclined 45 degrees from the horizontal plane In addition, three underwater wings 1 on the outer periphery are configured to be arranged in the 45 degree direction, and the injection angle at which water is finally injected becomes the 45 degree direction.

When the direction of the injection angle of the water is sprayed at 45 degrees, the water to be sprayed is to maximize the contact time is in contact with the air to maximize the oxygen transfer capacity.

Conventional aeration impeller of the structure described above is characterized in that the oxygen delivery capacity is significantly higher than other models, but there is no means to properly adjust the oxygen delivery capacity and water stirring ability according to the situation depending on the situation There is a problem that can not be adjusted to the optimum operating state according to the user's operating state.

Therefore, the present invention is equipped with a spray angle control plate on the top of the conventional 45-degree low speed explosion apparatus to solve the above problems, the low speed to adjust the two functions of oxygen transfer capacity and stirring ability according to the use and user operating conditions The purpose is to provide a repellent impeller.

1A is a plan view of an impeller of a low speed gun according to the prior art;

1B is a sectional view of an impeller of a low speed gun according to the prior art;

Figure 2A is a plan view of the impeller of the low speed gun according to the technology of the present invention

Figure 2B is an impeller cross section of the low speed gun according to the technology of the present invention

3A is a plan view of the injection angle control plate shown in FIG. 2A

FIG. 3B is a cross-sectional view of the jet angle control plate shown in FIG. 2A

Figure 4 is a cross-sectional view showing a state of spraying water in the low speed foamer equipped with a spray angle control plate according to the technology of the present invention

* Description of the symbols for the main parts of the drawings *

1: Blade 3: Cone center body

5: rotating shaft 7: injection angle control plate

9: conical surface 11: inclined surface

The present invention for achieving the above object includes a rotating shaft, a cone central body which rotates about the rotating shaft and whose outer cone surface is inclined at an angle in a horizontal plane, and a plurality of underwater wings arranged on the outer circumference of the rotating shaft. In the low-speed aeration machine impeller configured, the injection angle control plate is provided separately on the top of the cone center, by the inclination angle (a) and the width (b) of the inclined surface formed on the bottom end of the circumference of the injection angle control plate is adjusted properly It is characterized in that the oxygen transfer capacity of the aeration phase and the ability to stir the water.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

Figure 2A is a plan view of the impeller low speed gun according to the technology of the present invention, Figure 2B is an impeller cross-sectional view of the low speed gun according to the technology of the present invention.

As shown in the figure, the low speed air bubbler impeller according to the present invention is provided with an injection angle control plate 7 separately on the top of the cone center 3.

The center of the injection angle adjustment plate 7 is fixed to the rotation shaft 5, and as shown in Figs. 3A and 3B, the end of the circumference of the injection angle adjustment plate 7 has a predetermined width at its bottom. The inclined surface 11 is formed at a predetermined angle of inclination a.

The inclination angle (a) and the width (b) of the bottom surface 11 is the size of the water injection is changed as the size is adjusted, if appropriately adjusted according to the use conditions, the balance of the appropriate oxygen transfer capacity and water stirring ability Can be achieved.

Figure 4 is a cross-sectional view showing a state of spraying water in the low speed foaming machine equipped with a spray angle adjustment plate according to the technique of the present invention.

As shown in the drawings, when the injection angle control plate 7 according to the technology of the present invention is mounted, the inclination angle a and the inclined area of the inclined surface 11 formed on the bottom surface of the circumferential end of the injection angle control plate 7 When the width b is properly adjusted according to the use conditions, the water injection state is changed from the conventional ㉮ direction to the ㉯ direction. In this case, the amount of oxygen delivered decreases and the stirring ability of the water increases by the reduced power.

Therefore, by configuring the injection angle control plate (7), by adjusting the inclination angle (a) and the width (b) of the inclined surface 11 it is possible to adjust the oxygen transfer capacity and the stirring ability of the water to the desired state, wherein the injection angle is a ₀ The oxygen transfer capacity is Sin a ₀ / Sin 45 ° and the stirring capacity is Cos a ₀ / Cos 45 °, and the sum of the two functions is unchanged.

In the following examples, the oxygen transfer capacity and the stirring ability of the water were tested before and after the injection angle control plate of the present invention was described.

On the other hand, the technical scope of the present invention is not limited by the following examples.

EXAMPLE

First, a test machine and a test tank were respectively manufactured, and after filling 648 tons of fresh water in the test tank, sodium sulfate (Na ₂ SO ₃ ) was used to adjust the oxygen concentration to 0, and cobalt chloride (CoCl ₂ ) was added as a catalyst. After the oxygen concentration was set to 0, the oxygen concentration was measured for 30 minutes at a predetermined point in six locations until the oxygen concentration was saturated at 10-second intervals.

Since the agitation capacity of water is determined by the flow rate, the flow rate is measured, and the flow rate should be measured at the lowest point in the abandoned tank but the test tank is selected by comparing the relative mechanical characteristics. The state was set at 100 and the change amount was measured as a percentage.

At this time, the mechanical specifications of the experimental machine is 60HP (45KW) output side rotation speed 86 RPM, the specification of the test tank is 12M horizontal × 12M × 4.5M water depth.

The experimental results are summarized in the table below.

[table]

According to the experimental results shown in the above table, the oxygen transfer amount is measured as the lateral force and the oxygen transfer rate is found to be proportional to Sin a / Sin 45 °. It can be seen that it is proportional to 45 °.

Since the above two equations are the vertical component and the horizontal component of the water injection rate, it can be seen that the oxygen transfer ability and the stirring ability can be precisely adjusted by the injection angle in the device of the same efficiency.

As described above, the impeller of the low speed bubbler according to the present invention has an injection angle control plate on the upper portion of the conventional 45 degree injection low speed aeration device to adjust two functions of oxygen transfer ability and stirring ability according to the use and user operation state. In this way, it is possible to operate efficiently by adjusting the two functions of the aeration machine according to the shape of the tank according to the shallow and wide case and the deep and narrow degree.

Claims (2)

In the impeller of the low speed aeration machine comprising a rotating shaft, a conical center which rotates about the rotating shaft and its outer cone surface is inclined at an angle in a horizontal plane, and a plurality of underwater wings are arranged on the outer periphery of the rotating shaft, An injection angle control plate is separately provided on the top of the cone center, and the inclination angle (a) and the width (b) of the inclined surface formed at the bottom of the end of the circumference of the injection angle control plate are appropriately adjusted so that the oxygen transfer capacity of the aeration machine and the stirring of water Impeller of low speed guns, characterized in that the ability to be adjustable. 2. The impeller of claim 1, wherein the angle of the outer cone surface of the cone center body is inclined 45 degrees with respect to the horizontal plane.