CN212283592U

CN212283592U - Microbubble generating device

Info

Publication number: CN212283592U
Application number: CN202020803970.6U
Authority: CN
Inventors: 孙继辉
Original assignee: Ningbo Zhichunren Environmental Engineering Co ltd
Current assignee: Ningbo Zhichunren Environmental Engineering Co ltd
Priority date: 2020-05-14
Filing date: 2020-05-14
Publication date: 2021-01-05
Anticipated expiration: 2030-05-14

Abstract

The utility model discloses a microbubble generating device, including blast mechanism and micropore aerator, still include rabbling mechanism, the blast mechanism comprises fan and trachea, the fan is linked together through trachea and micropore aerator, the rabbling mechanism comprises agitator and the drive unit who is used for driving the agitator to rotate, the agitator sets up the top at micropore aerator, and there is distance D in the lower surface of agitator and micropore aerator's upper surface, the distance between micropore aerator's upper surface and the surface of water is D, D is less than 1/2D, the agitator is radial-flow agitator or mixed flow agitator; the advantages are low energy consumption, good effect and stable operation.

Description

Microbubble generating device

Technical Field

The utility model belongs to the technical field of water treatment and chemical industry technique and specifically relates to a microbubble generating device is related to.

Background

In water treatment process and chemical process, the microbubble generator is mainly used for air floatation separation and water oxygenation, and can also be used for dissolving other gaseous substances in water, such as chlorine dioxide, ozone disinfection, sterilization or chemical oxidation, and the like.

In the application of the microbubbles, the diameter of the microbubbles has great influence on the treatment energy consumption and the treatment effect, and generally, the smaller the diameter of the microbubbles is, the better the treatment effect is under the same generated gas quantity. At present, a common micro-bubble generating device comprises a blast aeration device, a diving aeration device, a dissolved air releasing device and an electrolysis device.

The aeration device comprises a microporous aeration device and a hydraulic shearing and diffusing aeration device, wherein the microporous aeration device uses a fan to blow gas into water and then enters the water through a microporous aerator; the submersible aeration device is divided into an impeller mixing mode and a Venturi mixing mode according to a gas-liquid mixing mode, a device adopting the impeller mixing mode is called a stirring aerator or a propeller aerator, and a device adopting the Venturi mixing mode is called a jet aeration device; the dissolved gas releasing device is used for firstly pressurizing and dissolving gas in high-pressure water, and then quickly decompressing to release the dissolved gas from the water; the electrolysis device decomposes substances in water into gas and releases the gas into the water through the electrochemical action on the electrodes.

The aeration rate of the blast aeration device and the diving aeration device is large, the energy consumption is low under the same generated gas quantity, but the generated bubbles have larger diameter, the gas-liquid mass transfer effect is poor, the air floatation effect is poor, the diameter of the generated bubbles can be reduced by reducing the aperture of the diffusion device, but the unit energy consumption is rapidly increased by the undersized aperture, and the normal operation of the equipment is influenced by the fact that the undersized aperture is easy to cause micropore blockage.

The diameters of bubbles generated by the dissolved gas release device and the electrolysis device are smaller, the gas-liquid mass transfer effect is better, the air floatation effect is better, but the energy consumption is higher under the same generated gas quantity, wherein the dissolved gas release device is also easy to be blocked to influence the normal operation of the equipment.

Therefore, it is an urgent technical problem to be solved by those skilled in the art to design a microbubble generator with low energy consumption and good effect.

Disclosure of Invention

In order to solve the deficiencies existing in the prior art, the utility model provides a little bubble generating device that the energy consumption is low, effectual and the operation is stable.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a microbubble generating device, includes blast mechanism and micropore aerator, still includes rabbling mechanism, blast mechanism constitute by fan and trachea, the fan pass through the trachea with micropore aerator be linked together, rabbling mechanism by the agitator with be used for the drive agitator pivoted drive unit constitute, the agitator set up micropore aerator's top, just the lower surface of agitator with micropore aerator's upper surface have distance D, micropore aerator's upper surface and the distance between the surface of water be D, D is less than 1/2D, the agitator be radial-flow agitator or mixed-flow agitator.

Preferably, D is less than 1/10D. The advantage is that under the same stirring power, radial water flow with higher speed can be obtained on the surface of the microporous aerator, so that the effect of the water flow generated by the stirrer for cutting initial bubbles is stronger, and more bubbles with small diameters can be obtained.

Preferably, the stirrer is a radial flow stirrer. In the structure, the stirrer adopts a radial flow stirrer, and because the generated water flow is mainly horizontal flow and the water flow direction is the main direction for cutting initial bubbles, more small-diameter bubbles can be obtained under the condition of the same stirring power.

Preferably, the stirrer is a circular saw-tooth stirrer. In this structure, the disk sawtooth formula agitator is discoid and the outward flange has the sawtooth structure, and it can obtain the radial rivers of bigger speed under the same stirring power condition, and the effect of the initial bubble of rivers cutting that the agitator produced is more obvious, can obtain more minor diameter bubbles finally.

Preferably, the stirrer is provided with a plurality of through holes, and the through holes are distributed in a radial shape. In the structure, the water flow direction between the stirrer provided with the through hole and the microporous aerator is a single radial outward flow, and when the through hole is not arranged, the water flow between the stirrer and the microporous aerator is a circulating flow with an outward upper layer and an inward lower layer, so that the structure can reduce the reactive energy loss and improve the micro-bubble generation efficiency; the through holes are arranged, so that bubbles passing through the through holes can be cut for the second time, and the diameters of the bubbles are further reduced; the through holes are arranged, so that the rotational inertia of the stirrer can be reduced under the conditions of keeping rigidity and strength, and the starting difficulty of the stirrer can be reduced.

Preferably, the microporous aerator is a flat plate type microporous aerator. In the structure, the gas diffusion surface of the flat plate type microporous aerator is a plane, and the cutting effect of radial water flow formed on the plane is stronger under the same stirring power, so that the effect of water flow generated by the stirrer for cutting initial bubbles is stronger, and more small-diameter bubbles can be obtained.

Preferably, the microporous aerator is provided with a gas diffusion area, a plurality of gas outlet holes are arranged in the gas diffusion area, the diameter of the stirrer is 1/5-4/5 of the longest straight line size of the gas diffusion area, and the stirrer is positioned in the center of the gas diffusion area. In the structure, the shape of the gas diffusion area is not limited, when the plane of the gas diffusion area is a circle, the longest straight line dimension of the gas diffusion area is the diameter of the gas diffusion area, when the plane of the gas diffusion area is a rectangle, the longest straight line dimension of the gas diffusion area is the diagonal length of the gas diffusion area, the diameter of the stirrer is 1/5-4/5 of the longest straight line dimension of the gas diffusion area and is positioned in the center of the gas diffusion area, on one hand, the radial water flow generated by the stirrer is uniformly applied to the gas diffusion area, on the other hand, if the size of the stirrer is too large, the thickness of the stirrer needs to be increased for maintaining the rigidity of the stirrer, the water flow speed for cutting bubbles under the same stirring power is reduced, the rotational inertia is increased, and the; if the size is too small, the surface runoff velocity of the microporous aerator except the stirrer is reduced under the condition of the same stirring power, so that the selection range of 1/5-4/5 is most suitable.

Preferably, an air filter is connected to the air inlet and/or the air outlet of the fan. In this structure, air cleaner is prior art, and it plays filtered air's effect for the final gas that flows to microporous aerator is comparatively clean, helps microporous aerator can long-term normal operating like this and is not blockked up.

Compared with the prior art, the utility model has the advantages of: the air pipe through which the fan passes supplies air to the microporous aerator, so that the microporous aerator continuously generates small bubbles; the driving unit is arranged for driving the stirrer to rotate, and when the stirrer rotates, the water flow generated by the stirrer plays a water flow cutting role on the surface of the microporous aerator, so that the diameter of bubbles initially generated by the microporous aerator is reduced; because the distance D exists between the lower surface of the stirrer and the upper surface of the microporous aerator, the distance D between the upper surface of the microporous aerator and the water surface is smaller than 1/2D, and the stirrer is a radial flow stirrer or a mixed flow stirrer, the energy consumption for obtaining the same water flow cutting effect on the surface of the microporous aerator is lower, and micro bubbles can be efficiently generated; this structure has avoided the simple adoption to reduce the aerator gas resistance loss that the mode of micropore aerator venthole leads to and the problem that the fan energy consumption increases, has still reduced the possibility that the venthole blockked up, has reduced the gaseous preliminary treatment degree of difficulty of aeration, has reduced the cost to along with the microbubble diameter reduce more above the effect show more.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a stirrer according to a first embodiment of the present invention;

fig. 3 is a top view of a first embodiment of the present invention;

fig. 4 is a top view of a second embodiment of the present invention;

fig. 5 is a schematic structural diagram of a third embodiment of the present invention;

fig. 6 is a schematic structural diagram of a fourth embodiment of the present invention;

fig. 7 is a schematic structural diagram of a fifth embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples, but the present invention is not limited thereto.

The first embodiment is as follows: as shown in the figure, a microbubble generating device, including blower mechanism and micropore aerator 1, still include rabbling mechanism, blower mechanism comprises fan 2 and trachea 3, fan 2 is linked together through trachea 3 and micropore aerator 1, rabbling mechanism comprises agitator 4 and the drive unit 5 that is used for driving 4 pivoted of agitator, agitator 4 sets up the top at micropore aerator 1, and there is distance D in the lower surface of agitator 4 and the upper surface of micropore aerator 1, the distance between the upper surface of micropore aerator 1 and the surface of water is D, D is less than 1/2D, agitator 4 is radial-flow agitator or mixed flow agitator.

In this embodiment, D is less than 1/10D. The advantage is that under the same stirring power, radial water flow with higher speed can be obtained on the surface of the microporous aerator 1, so that the effect of the water flow generated by the stirrer 4 for cutting initial bubbles is stronger, and more small-diameter bubbles can be obtained.

In this embodiment, the stirrer 4 is a radial stirrer. In this configuration, the stirrer 4 is a radial flow stirrer, and since the water flow generated by the stirrer is mainly a horizontal flow, and the water flow direction is the main direction for cutting the initial bubbles, more small-diameter bubbles can be obtained under the same stirring power.

In this embodiment, the driving unit 5 includes a motor and a stirring shaft, the motor is fixed above the water surface, the upper end of the stirring shaft is fixed to the output shaft of the motor, and the lower end of the stirring shaft is coaxially fixed to the stirrer 4.

In this embodiment, the agitator 4 is a disk sawtooth agitator. In this structure, the disk sawtooth formula agitator is discoid and the outward flange has the sawtooth structure, and it can obtain the radial rivers of bigger speed under the same stirring power condition, and the effect of the initial bubble of rivers cutting that this agitator 4 produced is more obvious, can obtain more minor diameter bubbles finally.

In this embodiment, the stirrer 4 is provided with a plurality of through holes 41, and the plurality of through holes 41 are radially distributed. In the structure, the water flow direction between the stirrer 4 provided with the through hole 41 and the microporous aerator 1 flows outwards in a single radial direction, and the water flow between the stirrer 4 and the microporous aerator 1 is a circulating flow with an upper layer outwards and a lower layer inwards when the through hole 41 is not provided, so that the structure can reduce the loss of reactive energy and improve the generation efficiency of micro bubbles; the through holes 41 are arranged, so that bubbles passing through the through holes 41 can be cut for the second time, and the diameters of the bubbles are further reduced; the through holes 41 can also reduce the moment of inertia of the stirrer 4 under the condition of keeping rigidity and strength, and are beneficial to reducing the starting difficulty of the stirrer 4.

In this embodiment, the micro-porous aerator 1 is a flat plate type micro-porous aerator. In the structure, because the gas diffusion surface of the flat plate type microporous aerator is a rectangular plane, the cutting effect of radial water flow formed on the plane is stronger under the same stirring power, so that the effect of water flow generated by the stirrer 4 for cutting initial bubbles is stronger, and more small-diameter bubbles can be obtained.

In this embodiment, the microporous aerator 1 has a gas diffusion area 11, a plurality of gas outlets 12 are provided in the gas diffusion area 11, the diameter of the agitator 4 is 1/5-4/5 of the longest straight line dimension of the gas diffusion area 11, and the agitator 4 is located at the center of the gas diffusion area 11. In the structure, as the planar shape of the gas diffusion area 11 is rectangular, the longest straight line dimension of the gas diffusion area 11 is the length of the diagonal line thereof, the diameter of the stirrer 4 is 1/5-4/5 of the diagonal line dimension, and the stirrer 4 is positioned at the center of the gas diffusion area 11, on one hand, the radial water flow generated by the stirrer 4 is relatively uniformly applied to the gas diffusion area 11, on the other hand, if the size is too large, the thickness of the stirrer 4 needs to be increased to maintain the rigidity of the stirrer 4, the water flow speed for cutting bubbles under the same stirring power is reduced, the rotational inertia is increased, and the starting difficulty of the stirrer 4 is increased; if the size is too small, the amount of the radial flow on the surface of the microporous aerator 1 other than the agitator 4 is reduced under the same agitation power, and therefore, it is most preferable to select the range of 1/5 to 4/5.

Example two: the other structure is the same as the first embodiment, except that the microaeration device 1 has a gas diffusion region 11, the planar shape of the gas diffusion region 11 is circular, a plurality of gas outlets 12 are provided in the gas diffusion region 11, the diameter of the stirrer 4 is 1/5-4/5 of the longest straight line dimension of the gas diffusion region 11, and the stirrer 4 is located at the center of the gas diffusion region 11. In the structure, as the plane shape of the gas diffusion area 11 is a circle, the longest straight line dimension of the gas diffusion area 11 is the diameter of the gas diffusion area, the diameter of the stirrer 4 is 1/5-4/5 of the diameter dimension, and the stirrer 4 is positioned at the center of the gas diffusion area 11, on one hand, the radial water flow generated by the stirrer 4 is relatively uniformly applied to the gas diffusion area 11, on the other hand, if the diameter is too large, the thickness of the stirrer 4 needs to be increased to maintain the rigidity of the stirrer 4, the water flow speed for cutting bubbles under the same stirring power is reduced, the rotational inertia is increased, and the starting difficulty of the stirrer 4 is increased; if the size is too small, the amount of the radial flow on the surface of the microporous aerator 1 other than the agitator 4 is reduced under the same agitation power, and therefore, it is most preferable to select the range of 1/5 to 4/5.

Example three: the other structures are the same as those of the first embodiment, and the difference is that an air inlet and an air outlet of the fan 2 are respectively connected with an air filter 6. In this structure, air cleaner 6 is prior art, and it includes the framework, installs the filter screen in the framework, plays filtered air's effect for the final gas that flows to microporous aerator 1 is comparatively clean, helps microporous aerator 1 to be able to long-term normal operating like this and not blockked up.

Example four: the other structure is the same as the first embodiment, but the difference is that an air filter 6 is connected to the air inlet of the fan 2. In this structure, air cleaner 6 is prior art, and it plays the effect of filtered air for the final gas that flows to microporous aerator 1 is comparatively clean, helps microporous aerator 1 to run normally for a long time like this and is not blockked up.

Example five: the other structure is the same as the first embodiment, except that an air filter 6 is connected to an air outlet of the fan 2. In this structure, air cleaner 6 is prior art, and it plays the effect of filtered air for the final gas that flows to microporous aerator 1 is comparatively clean, helps microporous aerator 1 to run normally for a long time like this and is not blockked up.

It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, and the present invention can also be modified in materials and structures, or replaced by technical equivalents. Therefore, all structural equivalents which may be made by applying the present invention to the specification and drawings, or by applying them directly or indirectly to other related technical fields, are intended to be encompassed by the present invention.

Claims

1. The utility model provides a microbubble generating apparatus, includes blast mechanism and micropore aerator which characterized in that: the aerator is characterized by further comprising a stirring mechanism, the blowing mechanism consists of a fan and an air pipe, the fan is communicated with the microporous aerator through the air pipe, the stirring mechanism consists of a stirrer and a driving unit for driving the stirrer to rotate, the stirrer is arranged above the microporous aerator, the lower surface of the stirrer is far from the upper surface of the microporous aerator, the distance between the upper surface of the microporous aerator and the water surface is D, the D is smaller than 1/2D, and the stirrer is a radial flow stirrer or a mixed flow stirrer.

2. A microbubble generation apparatus according to claim 1, wherein: d is less than 1/10D.

3. A microbubble generation apparatus according to claim 1, wherein: the stirrer is a radial flow stirrer.

4. A microbubble generation apparatus according to claim 1 or 3, wherein: the stirrer is a circular saw tooth type stirrer.

5. A microbubble generation apparatus according to claim 4, wherein: the stirrer is provided with a plurality of through holes which are radially distributed.

6. A microbubble generation apparatus according to claim 1, wherein: the microporous aerator is a flat plate type microporous aerator.

7. A microbubble generation apparatus according to claim 4, wherein: the microporous aerator is provided with a gas diffusion area, a plurality of gas outlet holes are formed in the gas diffusion area, the diameter of the stirrer is 1/5-4/5 of the longest straight line size of the gas diffusion area, and the stirrer is located in the center of the gas diffusion area.

8. A microbubble generation apparatus according to claim 1, wherein: and an air filter is connected at the air inlet and/or the air outlet of the fan.