CN2491446Y - Self-sucking underwater diversion aerating and stirring machine - Google Patents

Abstract

The utility model relates to a self-feeding diving dual-purpose machine of aeration and agitation, comprising a diving motor, a blade wheel, a guide shell and an air intake duct, wherein the diving motor is directly disposed at the top end of the guide shell, the output shaft of the diving motor dives inside the guide shell and is connected to the blade wheel, and the guide shell is fixed at the bottom of a pool or floats on the water surface. The blade wheel is a hollow cavity body, and the perisporium of the blade wheel is integrally connected with a plurality of hollow cavity blades which is communicated with the hollow cavity body. The centre of the upper end surface of the hollow cavity body of the blade wheel is connected to the output shaft of the diving motor through a shaft sleeve, and the centre of the lower end surface is provided with an air inlet opening which is connected to one end of the air intake duct. The other end of the air intake duct gets through the guide shell and communicates with air.

Description

Self-priming submersible diversion aeration mixing machine

The utility model relates to sewage biochemical treatment equipment.

In the sewage biochemical treatment process, realizing the dissolution of oxygen in water is the most critical factor in the treatment process. In order to maximize the oxygen transfer efficiency and power efficiency, people have made many efforts and produced many kinds of aeration equipment, but Still unsatisfactory.

Existing air diffusers (aeration head, aeration tube, etc.) are generally fixed on the air pipeline at the bottom of the pool, and compressed air enters the water through the micropores of the aeration head (pipe) to realize the transfer of oxygen. This process has a large pressure loss and needs to be equipped with a high-pressure fan, which is not suitable for use in deep pools. At the same time, its life span is short, it is troublesome to update and maintain, and the investment and operation costs of ancillary facilities (blowers, machine rooms, pipelines) are particularly high.

Existing mechanical aerators (centrifugal, jet aerators, etc.) are limited by the degree of vacuum generated, and their maximum diving depth is about 5 meters. As the diving depth increases, the corresponding air intake decreases, thereby reducing Oxygenation capacity. The power efficiency of products currently on the market is generally only at the level of 1.2-1.5kgO ₂ /kWh. To improve the diving depth, an air compressor must be attached to provide an air source, which also causes an increase in investment and operating costs.

The purpose of this utility model is to provide a low cost, wide range of application, simple structure, convenient maintenance, especially to save the gas supply equipment and related supporting facilities and extremely high oxygen transfer rate. High self-priming submersible diversion aeration mixing machine.

The technical solution of the utility model:

A self-priming dual-purpose submersible diversion aeration aeration mixing machine is characterized in that it consists of a submersible motor, an impeller, a diversion cylinder and an air suction pipe, the submersible motor is directly placed on the upper end of the diversion cylinder, and the output shaft of the submersible motor extends Into the guide tube and connected with the impeller, the guide tube is fixed on the bottom of the pool or floating on the water surface, the impeller is a cavity body, its surrounding wall is connected with a plurality of cavity blades connected with the cavity body, the cavity body of the impeller The center of the upper end surface is connected with the submersible motor through a shaft sleeve, and the center of the lower end surface is provided with an air intake hole, which is connected with one end of the suction pipe, and the other end of the suction pipe passes through the guide cylinder to communicate with the air.

The utility model has the dual functions of self-suction and pushing flow, can push the gas-liquid mixture to the bottom of the pool, prolongs the gas-water contact time, and the oxygen transfer efficiency is extremely high, which can reach 50-55%. Gas equipment, high power efficiency. Adjust the inhalation volume to realize the dual-purpose function of stirring and oxygenation, one machine with two functions, instead of a large number of air diffusers and special mixers. The utility model has the function of self-inhalation, reduces the gas supply equipment and auxiliary facilities, saves investment costs, can be used in various sewage treatment processes, and is especially suitable for use in deep pools (10-15m). It will not be blocked, has a long service life, and is simple and convenient to install and maintain. It can be fixed or floating.

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

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

Fig. 2 is a schematic structural view of the impeller of the present invention.

As shown in Figures 1 and 2, the utility model is composed of a submersible motor 1, an impeller 2, a vane guide wheel 2a, a guide tube 3, and an air suction pipe 4. The submersible motor 1 is directly placed on the upper end of the guide tube 3, and the output shaft of the submersible motor 1 It extends into the guide tube 3 and connects with the impeller 2. The guide tube 3 is fixed on the bottom of the pool or floats on the water surface. The impeller 2 is a cavity body, and its surrounding wall is integrally connected with a plurality of cavity blades 6 communicating with the cavity body. The lower surface 7 or the outer surface 8 of each blade is a curved surface or an inclined surface, and the number of blades of the impeller 2 is 2-12, preferably 3-6. The outer periphery of the impeller 2 is provided with a guide vane wheel 2a, and the guide vane wheel 2a consists of Composed of a plurality of curved blades, they are arranged on the inner wall of the guide tube 3 corresponding to the peripheral position of the impeller 2, and they guide the water flow thrown out by the impeller 2 to flow to the pool body, so that the impeller 2 not only has the function of vacuuming the original impeller, but also Added the function of pushing the liquid. The center of the upper end surface of the hollow body of the impeller 2 is connected to the output shaft of the submersible motor 1 through the shaft sleeve 9, and the center of the lower end surface is provided with an air inlet 5, which is connected to one end of the suction pipe 4, and the other end of the suction pipe 4 One end passes through the guide tube 3 and the water surface communicates with the air. The aerator adopts the original impeller structure design, which has two functions. On the one hand, it can generate extremely high vacuum degree, and on the other hand, it can push the flow.

When the utility model is used, it is placed 1.5-2.0m underwater, and the impeller 2 rotating under the drive of the motor 1 forms a negative pressure at the inlet to inhale air, and the air is crushed into tiny air bubbles by the chopping device next to the impeller 2. Vigorous mixing is carried out under the turbulence of high-speed water flow to form a uniform gas-water emulsion. Under the pushing action of the impeller 2, it continues to run down to the bottom of the pool. Since the air bubbles are continuously pressurized, the oxygen in the air bubbles is continuously transferred. At the same time, the diversion method prolongs the air-water contact time, which improves the actual oxygen transfer efficiency. , the α value can reach 0.8-0.9, and the power efficiency can reach 3.5-4.0kgO ₂ /kWh.

On the other hand, due to the downward movement of the sewage in the guide tube 3, a natural circulation system is formed, and the water jetted from the lower part of the guide tube 3 achieves a good stirring effect, which can fully aerate the sewage in the entire pool body and avoid dead ends. . The suction pipe 4 is used to self-inhale under the shallow water level, and the diversion method is used to ensure a sufficient amount of aeration, and it is not limited by the depth of the pool. The mechanical energy consumption is small, and there is no need for blowers, machine rooms, gas pipelines and other facilities, saving investment and cost. running costs. The utility model can adjust the air intake through the control valve, so that the two functions of aeration and stirring can be realized respectively.

In the utility model, the submersible motor 1 can also be installed in the guide tube 3 upside down, and its output shaft is connected to the impeller 2 upwards, and the other structures are unchanged, and the effect is the same.

The utility model can also be arranged on the floating water surface, and can be moved and used arbitrarily in the pool.

Claims (9)

1. A self-priming dual-purpose submersible diversion aeration aeration mixing machine, characterized in that it consists of a submersible motor, an impeller, a diversion tube, and an air suction pipe. The submersible motor is directly placed on the upper end of the diversion tube, and the output of the submersible motor is The shaft extends into the guide tube and connects with the impeller. The guide tube is fixed on the bottom of the pool or floats on the water surface. The impeller is a cavity body, and its surrounding wall is connected with a plurality of cavity blades communicating with the cavity body. The cavity of the impeller The center of the upper end surface of the cavity is connected with the submersible motor through a shaft sleeve, and an air inlet is arranged at the center of the lower end surface of the cavity, which is connected with one end of the suction pipe, and the other end of the suction pipe passes through the guide tube to communicate with the air. 2. The self-priming submersible diversion, aeration and agitation machine according to claim 1, characterized in that the lower surfaces of the impeller and each blade are curved surfaces. 3. The self-priming submersible diversion, aeration and agitation machine according to claim 1, characterized in that the lower surface of each blade of the impeller is an inclined plane. 4. The self-priming submersible, diversion, aeration and mixing machine according to claim 1, characterized in that the outer surface of each blade of the impeller is a curved surface. 5. The self-priming submersible diversion, aeration and agitation machine according to claim 1, characterized in that the outer surface of each blade of the impeller is an inclined plane. 6. The self-priming submersible diversion, aeration and agitation machine according to claim 1, characterized in that the number of blades of the impeller is 2-12. 7. The self-priming submersible diversion, aeration and mixing machine according to claim 6, characterized in that the number of blades of the impeller is 3-6. 8. The self-priming submersible diversion, aeration and agitation machine according to claim 1, characterized in that an impeller is provided on the outer periphery of the impeller, and the impeller is composed of a plurality of curved blades, which are arranged on the outer periphery of the corresponding impeller. on the inner wall of the guide tube. 9. The self-priming submersible diversion, aeration and agitation machine according to claim 1, characterized in that all the submersible motors are installed upside down in the diversion cylinder, the output shaft is connected to the impeller upward, and other structures remain unchanged .

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