WO2020038310A1

WO2020038310A1 - Dual-fluid colliding jet-type micro-nano-bubble generation device

Info

Publication number: WO2020038310A1
Application number: PCT/CN2019/101278
Authority: WO
Inventors: 孙广东; 赵龙; 吕冠梦; 沙倩; 申彪; 蒋云钟; 吴昊; 张萍
Original assignee: 深圳源域生态科创中心有限公司
Priority date: 2018-08-21
Filing date: 2019-08-19
Publication date: 2020-02-27
Also published as: CN209005563U

Abstract

Disclosed is a dual-fluid colliding jet-type micro-nano-bubble generation device, comprising Venturi tubes, wherein two Venturi tubes are provided. The device has the beneficial effects that the device uses a dual-fluid colliding-type structural design; collision occurs between two fluids containing micro-nano-bubbles, and thus a turbulence intensity being 1.5-3 times higher than that of traditional single-tube jets is formed to promote micro-nano secondary crushing, such that there are more micro-nano-bubbles generated, and the grain size becomes uniform; by means of collision between two foam fluids, a diffusion mode of the micro-nano-bubbles changes to a 360-degree annular disk form, thereby facilitating diffusion of the micro-nano-bubbles; a counter-acting force of a water body on the device is small due to a special collision-type structural design; therefore, when the device works underwater, other fixing devices are not needed, thereby greatly improving convenience; and compared with a traditional single-tube Venturi tube device, the present invention requires lower energy consumption in the case of requiring the generation of the same number of micro-nano-bubbles of the same grain size.

Description

Double-flow colliding jet type micro-nano bubble generating device

This application claims the entire rights and interests of a Chinese patent application filed on August 21, 2018 with the State Intellectual Property Office of the People's Republic of China with an application number of 201821342790.1 and an invention name of "a dual-flow colliding jet micro-nano bubble generating device".

Technical field

The utility model belongs to the technical field of water quality treatment equipment, and particularly relates to a dual-flow colliding jet type micro-nano bubble generating device.

Background technique

The concentration of dissolved oxygen in the water indicates the self-purification ability of the water area. At present, in a comprehensive water ecological restoration project, the use of an aeration device to increase the dissolved oxygen in the water body is a key technical point.

Under the same conditions, compared with the common aeration method, the micro-nano aeration method has more gas input into the water in the same time and has a wider range of effects. Micro-nano aeration equipment is small, more convenient to use than traditional aeration equipment, lower energy consumption, and micro-nano bubbles can be kept in water for a long time, which can greatly increase the dissolved oxygen in water, and when the bubble diameter is less than 50 microns The interface of the bubble is negatively charged, has a strong adsorption capacity, and has obvious air flotation effect. At the same time, some oxidizing free radicals are attached around the micro-nano bubbles, which provides a high concentration of active oxidant for the water body repair system, which can greatly improve the water body. Therefore, the utility model proposes a dual-flow colliding jet type micro-nano bubble generating device. The utility model is based on the Venturi jet method and adopts a unique dual-flow colliding structure design to achieve more stable preparation of micro-nano bubbles. Effect. Before the utility model and the method were made, other micro-nano bubble generation methods at home and abroad include pressurized dissolved gas release method, water temperature difference method, electric field method, microwave method, venturi jet method, etc., based on the above methods With the help of rotary cutting, centrifugation and other devices to prepare micro-nano bubbles.

Among them, the pressurized dissolved gas release method and related devices change the gas pressure in a special dissolved gas tank to change the solubility of the gas in the liquid, and then the dissolved gas is changed into micro-nano bubbles by sudden pressure recovery. The form of precipitation, the number of micro-nano bubbles is large, and the particle size is uniform, but the dissolved gas tank of the device has low gas-dissolving efficiency, complicated operation, high manufacturing cost, high energy consumption, and most of them are used in air flotation technology. The scope of application is small. The water temperature difference method shows that when cold and hot water are mixed, gas is released from low-temperature water to prepare nano-bubbles. However, this method cannot accurately control the temperature difference of the water temperature, and the number of micro-nano bubbles produced is small. There are many working parts in this device. , Complex coordination, high energy consumption. The electric field method is to generate micro-nano bubbles on the positive and negative plates by energizing the water. Most of the micro-bubble diameters generated by this generation method are between 20 and 60 mm. The bubble size is controllable, but there are shortcomings such as less bubbles, electrode consumption, and higher energy consumption. In many practical applications, the electrolytic device is strict. Claim.

Venturi jet method uses various shearing forces to smash the gas to form micro-nano bubbles into the liquid phase. This method is easy to operate and has low energy consumption. Venturi jet micro-nano bubble generator The advantages of "compact structure, not easy to block, and large flux" have important application potentials. However, the traditional single-tube Venturi jet device cannot form a 360 ° all-round jet due to the single jet direction. The micro-nano bubbles generated in rivers and lakes In the application, the diffusion is not uniform, the diffusion is insufficient, and the high pressure required by the jet causes high energy consumption. Therefore, the utility model proposes a method and a device for generating 360 ° micro-nano bubbles based on the colliding jet, which can conveniently and conveniently The formation and diffusion of 360 ° micro-nano bubbles, while reducing the required jet pressure and energy consumption, can obtain smaller-sized micro-nano bubbles, which is an inevitable demand for micro-nano bubbles generation technology widely used in river and lake water treatment.

Summary of the Invention

The purpose of the present invention is to provide a dual-flow colliding jet-type micro-nano bubble generator in order to solve the above problems, and solve the shortcomings of the prior art.

In order to solve the above problems, the present invention provides a technical solution:

A dual-flow colliding jet type micro-nano bubble generating device includes a venturi tube, two venturi tubes are provided, the venturi tubes are sleeved on a fixed disc, and a water inlet is provided at an upper end of the venturi tubes. The water inlet of the venturi tube is at the center position of a fixed disc. A plurality of fixed rods are inserted through the fixed disc, and the fixed rods are sleeved with screws. Each of the fixed rods and two fixed rods are fixed. The disks are vertically connected, each of the fixed rods is parallel to each other, the two fixed disks are parallel to each other, a shrink tube is connected below the water inlet, and the water inlet and the shrink tube are integral, and the shrinkage A throat is provided on one side of the tube end, an air inlet is provided on the venturi tube, a water outlet is provided on one end of the venturi tube relative to the water inlet, and a distance between the end of the contraction tube and the throat is very large. A small gap, there is a gap between the outer wall of the shrink tube and the air inlet hole, a collision gap is provided between the two venturi tubes, and the fixed disc is detachable by a fixing rod and a screw Connection, each said solid The distance between the rod and the center of the fixed disc is equal, and the distance between each two adjacent fixed rods is equal. The end of the shrink tube is a small cylindrical structure, and there is no gap between the shrink tube and the air inlet hole. In direct communication, the gap between the outer wall of the shrink tube and the air inlet hole surrounds the lower end of the shrink tube in a ring shape.

Preferably, the gap between the shrinkable tube and the throat pipe communicates with the gap between the outer wall of the shrinkable tube and the air intake hole.

Preferably, the air inlet is located outside the venturi device.

Preferably, a diffuser is connected between the water outlet and the throat.

Preferably, the length of the collision gap ranges from 0.1 cm to 100 cm.

The beneficial effects of the utility model:

The utility model adopts a dual-flow colliding structure design, and two fluids containing micro-nano bubbles collide with each other, generating a turbulence intensity 1.5 to 3 times higher than that of a traditional single-tube jet, which promotes the secondary fragmentation of micro-nano. The number of micro-nano bubbles is increased and the particle size becomes uniform. The utility model uses two foam streams to collide, so that the diffusion mode of the micro-nano bubbles is changed into a 360 ° annular disc shape, which is beneficial to the micro-nano bubbles Due to the special collision structure design, the reaction force of the water body is very small, so the device does not need other fixing devices when working underwater, and the convenience is greatly improved. The utility model and the traditional single-tube wenqiu Compared with the inner tube device, under the requirements of generating the same particle size and the same number of micro-nano bubbles, the required energy consumption is lower.

BRIEF DESCRIPTION OF THE DRAWINGS

For ease of description, the present invention is described in detail by the following specific implementations and drawings.

Figure 1 is a schematic diagram of the internal structure of the utility model;

FIG. 2 is a schematic structural diagram of the present invention;

FIG. 3 is a working flowchart of the utility model.

In the picture: 1. Screw; 2. Water inlet; 3. Air inlet; 4. Collision clearance; 5. Water outlet; 6. Venturi tube; 7. Fixed rod; 8. Fixed disc; 9. Shrink tube. 10, throat; 11, diffuser.

detailed description

As shown in Figs. 1-3, the present embodiment adopts the following technical solution: a dual-flow colliding jet micro-nano bubble generating device, including a venturi tube 6, two venturi tubes 6, and two venturi tubes 6 On the fixed disc 8, a water inlet 2 is provided at the upper end of the venturi tube 6, the water inlet 2 of the venturi tube 6 is located at the center position of the fixed disc 8, and a plurality of fixed rods 7 7 is provided with screws 1 on each sleeve, and each of the fixing rods 7 is vertically connected to two fixing discs 8 and each of the fixing rods 7 is parallel to each other, and the two fixing discs 8 are parallel to each other. A shrink tube is connected below the water inlet 2 9. The water inlet 2 and the shrink tube 9 are integrated. The end of the shrink tube 9 is provided with a throat 10, the venturi tube 6 is provided with an air inlet 3, and the venturi tube 6 is provided at one end with respect to the water inlet 2. There is a small gap between the nozzle 5 and the end of the shrinkable tube 9 and the throat 10, there is a gap between the outer wall of the shrinkable tube 9 and the air inlet 3, and a collision gap 4 is provided between the two venturi tubes 6. , The fixed discs 8 are detachably connected through the fixing rods 7 and the screws 1, and the distance between each fixing rod 7 The distance between the center of the fixed disc 8 is equal, and the distance between each two adjacent fixed rods 7 is equal. The end of the shrink tube 9 is a small cylindrical structure, and there is no direct communication between the shrink tube 9 and the air inlet hole 3, The gap between the outer wall of the shrinkable tube 9 and the air inlet hole 3 surrounds the lower end of the shrinkable tube 9 in a ring shape.

The gap between the shrink tube 9 and the throat pipe 10 communicates with the gap between the outer wall of the shrink tube 9 and the air inlet hole 3. The air inlet hole 3 is located outside the venturi 6 device, and the water outlet 5 and the throat 10 are connected The length of the diffusion tube 11 and the collision gap 4 is between 0.1 cm and 100 cm.

Specifically: a dual-flow colliding jet type micro-nano bubble generating device, in use, the water inlets 2 on both sides are connected to a pump respectively, and the air inlets 3 on two symmetrical venturi tubes 6 are each connected to a soft The gas flow meter can be installed on both flexible pipes to detect the intake air volume of the venturi 6 on both sides, and the two flexible pipes are equipped with a device to adjust the intake air volume to ensure two air intakes. The air intake volume of the hole 3 remains the same. The high-pressure water flows through the water inlet 2 and the shrink tube 9 and the cavity at the end of the shrink tube 9 is initially mixed with the gas and enters the throat 10. The throat 10 is fully mixed and collided. Sprayed in the form of foam flow, the two gas-liquid mixtures sprayed still have great kinetic energy, and collisions occur at the collision gap 4 to obtain more micro-nano bubbles while the micro-nano bubbles' diffusion path is diffused in a straight line. It becomes a 360-degree disc-shaped plane spread. When using this device, the device should be placed vertically in the water body so that the initial diffusion surface of the micro-nano bubbles is parallel to the water surface. Because the device is separated from the pump, the vertical position of the device in the water body can be freely adjusted according to the situation. In order to ensure the number of micro-nano bubbles and the final diffusion mode of the micro-nano, the pump is a booster pump and a water pump. The head is 30-40m, the flexible tube is a PVC material hose, the gas flow meter is an electronic flow meter, the diffusion angle of the diffusion pipe 11 is 5 ° -15 °, and the collision The gap 4 distance is between 0.1-100cm.

The above shows and describes the basic principles and main features of the present utility model and the advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the foregoing embodiments. What is described in the foregoing embodiments and the description is merely illustrative. The principle of the utility model can be changed and improved without departing from the spirit and scope of the utility model. These changes and improvements all fall within the scope of the claimed utility model. The scope of protection is defined by the following claims and their equivalents.

Claims

A dual-flow colliding jet-type micro-nano bubble generating device includes a venturi tube (6), which is characterized in that two venturi tubes (6) are provided, and the venturi tubes (6) are sleeved on a fixed circle A water inlet (2) is provided on the upper end of the venturi tube (6) on the plate (8), and the water inlet (2) of the venturi tube (6) is located at the center position of the fixed disc (8). A plurality of fixing rods (7) are inserted through the fixing disc (8), and screws (1) are sleeved on the fixing rod (7), and each of the fixing rod (7) and two fixing discs (8) ) Are vertically connected, each of the fixed rods (7) is parallel to each other, the two fixed disks (8) are parallel to each other, a shrink tube (9) is connected below the water inlet (2), and the inlet The spout (2) and the shrink tube (9) are integrated, a throat (10) is provided on one end of the shrink tube (9), and an air inlet (3) is provided on the venturi tube (6), A water outlet (5) is provided at one end of the venturi tube (6) relative to the water inlet (2), and there is a small gap between the end of the contraction tube (9) and the throat tube (10). There is a gap between the outer wall of the shrink tube (9) and the air inlet (3), and two of said venturi (6) A collision gap (4) is provided between the fixing discs (8), and the fixing discs (8) are detachably connected by a fixing rod (7) and a screw (1), and a distance between each of the fixing rods (7). The distance between the centers of the fixed discs (8) is equal, and the distance between each two adjacent fixed rods (7) is equal. The end of the shrinkable tube (9) is a small cylindrical structure, and the shrinkable tube (9) There is no direct communication with the air inlet hole (3), and the gap between the outer wall of the shrink tube (9) and the air inlet hole (3) surrounds the lower end of the shrink tube (9) in a ring shape.
The dual-flow colliding jet type micro-nano bubble generating device according to claim 1, characterized in that the gap between the shrink tube (9) and the throat pipe (10) and the outer wall of the shrink tube (9) and the air inlet hole ( 3) The gap between them is communicated.
The dual-flow colliding jet type micro-nano bubble generating device according to claim 1, characterized in that the air inlet (3) is located outside the venturi tube (6) device.
The dual-flow colliding jet-type micro-nano bubble generating device according to claim 1, wherein a diffusion tube (11) is connected between the water outlet (5) and the throat pipe (10).
The dual-stream colliding jet-type micro-nano bubble generating device according to claim 1, wherein the length of the collision gap (4) is between 0.1 cm and 100 cm.