CN113559730A

CN113559730A - Suction inlet structure of jet aerator

Info

Publication number: CN113559730A
Application number: CN202110730920.9A
Authority: CN
Inventors: 朱明章; 张�林; 刘懿萱; 李正津; 刘修玉; 李美莲; 孙鲁杰; 张梦萍; 岳广璇
Original assignee: Qingdao University of Technology
Current assignee: Qingdao University of Technology
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2021-10-29

Abstract

The invention discloses the structure of the suction port of a new type of jet aerator. The difference from the existing design is that in the present invention, outside the liquid inlet pipe and the air inlet cavity, a circle of channels is left on the wall surface of the gas-liquid mixing chamber, which is called Suction port structure. The channel here will enter the water twice under the action of water pressure, forming a water curtain similar to a waterfall at the entrance of the mixing pipe. The water column flowing out of the nozzle meets the water curtain at the inlet of the mixing pipe at a certain angle, and carries the gas into the mixing pipe. In this way, the generation and retention of air bubbles in the front section of the mixing tube can be effectively reduced, so as to reduce the flow resistance and increase the air-carrying efficiency.

Description

Suction inlet structure of jet aerator

Technical Field

The invention relates to a suction inlet structure of a jet aerator, belonging to the technical field of construction and building materials.

Background

1. The conventional structure of the jet aerator mainly comprises a nozzle, an air suction chamber, a mixing pipe, a diffuser pipe and the like, and a typical structure of the jet aerator is shown in fig. 3. The structural parameters are as follows: the distance d between the nozzle and the throat part of the mixing pipe (throat nozzle distance), the area ratio m between the nozzle and the mixing pipe, the length-diameter ratio of the mixing pipe, the size of the diffuser pipe and the like all have obvious influence on the gas carrying rate (air flow/working medium flow) q. Therefore, the research on the jet aerator mainly focuses on the optimization and experiment of the structural parameters.

However, in the experiment of the gas carrying efficiency, a large amount of bubbles are formed at the front part of the mixing pipe, so that the forward flowing resistance of the gas is increased, the jet energy is consumed, and the gas carrying efficiency of the jet is reduced.

Disclosure of Invention

In order to solve the above-mentioned defects in the prior art, the present invention provides a suction inlet structure of a jet aerator, and in order to achieve the above-mentioned object, the technical solution adopted by the present invention is as follows:

a suction inlet structure of a jet aerator comprises a cavity surrounding the original jet aerator and a fixing device connected with the front end and the rear end.

Preferably, the cavity is in a shape similar to a disc on two sides, has a radian and is in a contraction shape, and consists of through-water wall surfaces, the front end wall surface is connected to the front half part of the jet aerator, the rear end part is connected to the rear half part of the jet aerator, and the front part and the rear part form a whole through a connecting rod.

Preferably, the suction inlet structure is provided behind the intake pipe and in front of the gas-liquid mixing chamber. The device is a hollow device and forms a whole with the gas-liquid mixing chamber, and because the original device does not have the structure, a large amount of bubbles can be generated in the space when gas and liquid are mixed, so that the flow resistance is increased. The device can press liquid into the inlet of the gas-liquid mixing chamber under the action of pressure to form a circle of waterfall-like water curtain, thereby effectively reducing the generation and detention of bubbles and further reducing the flow resistance of the liquid.

The utility model provides a novel suction inlet structure of jet aerator, different from the existing design: the invention is provided with a liquid inlet pipe and an air inlet cavity, and a circle of channel is reserved on the wall surface of a gas-liquid mixing chamber, which is called as a suction inlet structure. The channel can be fed with water again under the action of water pressure, and a ring of waterfall-like water curtain is formed at the inlet of the mixing pipe. The water column flowing out of the nozzle is intersected with the water curtain at the inlet of the mixing pipe at a certain angle, and the gas is carried into the mixing pipe. Just so can effectively reduce the formation and the delay of hybrid tube anterior segment bubble, reach and reduce the flow resistance, increase the effect of taking gas efficiency.

Drawings

FIG. 1 is a perspective view of a suction inlet structure of a novel jet aerator implemented in this example;

FIG. 2 is a front plan view of a novel jet aerator suction inlet configuration as embodied in this example;

fig. 3 is a structural view of a conventional jet aerator.

Detailed Description

In order to make the technical means and technical effects achieved by the technical means of the present invention more clearly and more perfectly disclosed, an embodiment is provided, and the following detailed description is made with reference to the accompanying drawings:

as shown in fig. 1-2, the suction inlet structure of the novel jet aerator of the present embodiment includes a cavity surrounding the original jet aerator and fixing devices connecting the front and rear ends.

The preferred, whole of this example is divided into three major parts: the front wall of the suction inlet structure, the rear wall of the suction inlet structure and the connecting rod between the front wall and the rear wall.

The first part is a front wall surface 3 of a suction inlet structure, which is integrated with a water inlet pipe 1 and an air inlet cavity 2 at the front end of the jet aerator, wherein the shape of the air inlet cavity can be determined according to specific working environment, and the nature of the air inlet cavity is actually a cavity, so that the water inlet pipe is directly communicated into the air inlet cavity. Due to the support of this construction, the front wall is designed at the end of the inlet chamber, i.e. a passage connecting the gas-liquid mixing chamber to the external liquid opens at this point.

The second part is a rear wall surface 4 of the suction inlet structure, and a gas-liquid mixing chamber 6, a throat pipe section 7 and a jet orifice 8 at the rear end of the rest jet aerator form a whole. The front wall surface and the rear wall surface are the same in shape, the angles are kept parallel and the front wall surface and the rear wall surface are in a contraction shape, so that a cavity similar to a plate is formed, when gas and liquid are primarily mixed and a large number of bubbles still exist, the device presses external liquid into the gas and liquid mixing chamber for the second time through water pressure, and due to the design of the shape and the design position of the device, pressed water can be secondarily mixed, the main function of the device can be that the pressed water can disperse and absorb a certain amount of bubbles, so that the resistance of the whole device is reduced, and the mixing efficiency of the device is improved.

The third part is a connecting rod 5 between the front wall surface and the rear wall surface, and a plurality of optimal connecting points which are most suitable for fixation are designed in the whole cavity according to the rule of fluid entering. The two walls are connected by using corrosion-resistant and high-strength alloy as a material, namely the whole jet aerator is connected. This device does not function appreciably, since it is of primary importance to maintain the integrity of the device when it is in an environment with high water pressure.

The above description is provided for the purpose of further elaboration of the technical solutions provided in connection with the preferred embodiments of the present invention, and it should not be understood that the embodiments of the present invention are limited to the above description, and it should be understood that various simple deductions or substitutions can be made by those skilled in the art without departing from the spirit of the present invention, and all such alternatives are included in the scope of the present invention.

Claims

1. A suction port structure of a jet aerator, comprising a cavity surrounding the original jet aerator and connecting the fixing devices at the front and rear ends.

2 . The suction port structure of a jet aerator according to claim 1 , wherein the cavity divides the entire device into two parts, which are connected into one body by a fixing device. 3 .

3. The suction port structure of a jet aerator as claimed in claim 1, wherein the actual shape of the cavity is a plate shape, the front wall is connected to the cavity formed by the water inlet and the air inlet, and the rear wall is Connected to the cavity formed by the gas-liquid mixing chamber and the throat.

4. The cavity formed by the water inlet and the air inlet as claimed in claim 3, is characterized in that: the water inlet is a pipe, the air inlet is actually a whole cavity, and the length of the air inlet pipe is set according to the environment where the device is located, The two form a cavity underwater, and the front wall of the suction port structure is welded to the rear end of the intake port body.

5. the suction port structure of a kind of jet aerator as claimed in claim 4 is characterized in that: similar to the shape of the rear wall surface, both are a circle of discs with radians, and the two wall surfaces are parallel to each other, and are in a constricted shape , the formed cavity is directly connected to the water, which is convenient for the water to be pressed into the gas-liquid mixing chamber for the second time.

6. the suction port structure of a kind of jet aerator as claimed in claim 3 is characterized in that: the rear wall surface is connected with the rear half of the jet aerator, and the rear half is a common structure, consisting of a throat pipe and a jet The device is formed, and the rear wall is connected to the head of the throat and becomes a whole with it.

7. The suction port structure of a jet aerator as claimed in claim 1, characterized in that: a certain connection and fixing device is arranged between the two suction port structures, which does not affect the secondary suction, and makes the whole device safe and stable. connected together.