CN201890803U - Jet aerator - Google Patents

Abstract

The utility model discloses a jet aerator, which belongs to sewage treatment equipment. It includes an inhalation air chamber (1) communicated with the intake pipe, a tubular mixing chamber (3) arranged at the lower part of the inhalation air chamber (1) and in communication with the inhalation air chamber (1), coaxially arranged in the mixing chamber (3) The water inlet pipe with a conical nozzle (5) is characterized in that at least three blades (8) distributed in a spiral shape are arranged on the inner wall of the nozzle (5) of the water inlet pipe. The utility model arranges spirally distributed blades in the nozzle of the water inlet pipe, so that the water flow sprayed out of the nozzle will rotate at the nozzle due to the action of the blades, which increases the friction between the water flow and the air, and makes the air bubbles smaller, thereby making the air bubbles smaller. The sewage is evenly aerated, and the amount of dissolved oxygen is large, which greatly improves the aeration effect.

Description

A jet aerator

technical field

The utility model relates to a sewage treatment device, in particular to a jet aerator.

Background technique

In sewage treatment, jet aeration is the third aeration method after blast aeration and mechanical aeration. It uses the turbulent movement and shearing action of the jet to cut gas and generate microbubbles to obtain extremely high oxygen transfer. Speed, and its advantages such as simple structure, less land occupation, and less infrastructure investment have attracted more and more attention. Existing jet aerators generally consist of three parts: nozzle, suction chamber and mixing chamber. The dynamic diffusion effect mixes the water flow and air to form a mixture of air and water. Usually, the nozzles of jet aerators are mostly conical structures. Since the working medium is directly sprayed out by this type of nozzle structure, there are defects in the mixing effect between the working medium and the injection medium, and the amount of dissolved oxygen is small, resulting in the aeration effect. Difference.

Utility model content

Aiming at the above-mentioned defects in the prior art, the utility model provides a novel jet aerator, which has uniform oxygenation, large dissolved oxygen and good aeration effect.

The utility model is achieved through the following technical solutions: a jet aerator, comprising an air intake chamber communicated with the intake pipe, a tubular mixing chamber arranged at the lower part of the air intake chamber and communicated with the air intake chamber, coaxially arranged on A water inlet pipe with a conical nozzle is provided in the mixing chamber, and at least three blades distributed in a spiral shape are arranged on the inner wall of the nozzle of the water inlet pipe.

The utility model arranges spirally distributed blades in the nozzle of the water inlet pipe, so that the sprayed water flow is rotated at the nozzle due to the action of the blades, which increases the friction between the water flow and the air, and the sewage and the ejected air are fully mixed. The bubbles become smaller, the sewage is evenly oxygenated, and the amount of dissolved oxygen is large.

In order to improve the mixing effect and consider the processing technology of the blades, the blades in the utility model can adopt a rectangular or right-angled trapezoidal shape.

The beneficial effects of the utility model are: the utility model has a simple structure, and by setting spirally distributed blades in the nozzle of the water inlet pipe, the water flow sprayed from the nozzle can be fully mixed with the ejected air, and due to the rotation of the water flow, The friction between the water flow and the air makes the bubbles smaller, so that the sewage is evenly oxygenated, the dissolved oxygen is large, and the aeration effect is greatly improved.

Description of drawings

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

Fig. 2 is the A direction view in Fig. 1;

Fig. 3 is the schematic diagram of rectangular blade;

Fig. 4 is the schematic diagram of the blade of rectangular trapezoid;

Among the figure, 1, suction air chamber, 2, stomata, 3, mixing chamber, 4, air-water mixing outlet, 5, nozzle, 6, water inlet pipe, 7, air inlet pipe, 8, blade.

Detailed ways

Below by non-limiting embodiment and in conjunction with accompanying drawing, the utility model is further described:

As shown in the drawings, what this embodiment shows is a jet aerator, which includes a suction chamber 1, a mixing chamber 3 located at the bottom of the suction chamber 1, and an air inlet pipe 7 is arranged on the suction chamber 1. It can communicate with the air intake system. The mixing chamber 3 is a tubular structure, and the air hole 2 is arranged on the pipe wall corresponding to the suction chamber 1. The suction chamber 1 communicates with the mixing chamber 3 through the air hole 2. The water inlet pipe 6 is coaxially arranged at one end of the mixing chamber 3, and the water outlet end is located in the mixing chamber 3, and the water outlet end has a nozzle 5, which is a conical pipe structure, and the inner wall is provided with spirally uniformly distributed blades 8 , three blades are shown in this embodiment. The other end of the mixing chamber 3 is an air-water mixing outlet 4, which is a tapered tube structure.

The number of vanes 8 in this embodiment can be adjusted according to design requirements, and the shape of the vanes 8 can be rectangular or right-angled trapezoidal.

The working process of the utility model is: the gas enters the suction chamber 1 from the intake pipe 7, and the sewage is ejected from the water supply pipe 6 through the nozzle 5 at a high speed. During the sewage spraying process, a negative pressure is formed around the nozzle to introduce the air in the suction chamber 1. Mixing is carried out in the mixing chamber 3, oxygen is added to the water, and the mixed gas-water mixture is injected through the gas-water mixing outlet 4.

The other parts of this embodiment adopt the existing technology, which will not be repeated here.

The above-mentioned embodiments are only used to illustrate the present utility model, not to limit it, and those skilled in the art can also make changes on this basis.

Claims (2)

1. jet aerator, comprise the suction air chamber (1) that communicates with inlet pipe, be located at and suck air chamber (1) bottom and suck the piped mixing section (3) that air chamber (1) communicates, the coaxial water inlet pipe that has conical nozzle (5) in the mixing section (3) that is arranged on is characterized in that: the nozzle of described water inlet pipe (5) inwall is provided with at least three blades (8) of shape distribution in the shape of a spiral.

2. jet aerator according to claim 1 is characterized in that: described blade (8) be shaped as rectangle or right-angled trapezium.

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