CN115818854A - Aeration head, aeration equipment and aeration method for generating reinforced micro bubbles - Google Patents

Abstract

The invention provides an aeration head for generating reinforced micro bubbles, which comprises an aeration branch pipe for entering external gas, a gas-water branch pipe for entering dissolved water, an aeration membrane, an inner-layer micro bubble generating cavity, an outer-layer aeration cavity and a regulating mechanism, wherein the aeration branch pipe is used for entering the external gas; the inner-layer micro-bubble generation cavity is used for receiving the gas-dissolved water from the gas-water separation pipe and generating micro-bubbles by the gas-dissolving gas release method, and the micro-bubbles are discharged through the aeration membrane; the outer aeration cavity is used for receiving gas from the aeration branch pipe and discharging the gas through the aeration membrane; the adjusting mechanism is used for adjusting the amount of gas which flows from the outer layer aeration cavity to the inner layer micro-bubble generation cavity. The invention can generate enough amount of micro bubbles by combining dissolved air outgassing with direct aeration, and solves the problems of poor mass transfer and poor dissolved oxygen effect of bubbles caused by small aeration amount in the current dissolved air outgassing process and large generation of bubbles generated by direct aeration.

Description

Aeration head, aeration equipment and aeration method for generating enhanced microbubbles

technical field

The invention relates to the field of wastewater treatment, in particular to an aeration head for generating enhanced microbubbles, an aeration device and an aeration method.

Background technique

The biological method has the advantages of environmental friendliness, high removal efficiency, and strong ability to remove refractory pollutants. It is currently often used in the treatment of domestic sewage and various industrial sewage. Biological methods include aerobic methods, anaerobic methods, and biological enzyme methods. Among them, aerobic methods are applied to the treatment of various water bodies due to their advantages of high treatment efficiency, less restrictions, and wide application. The core of the aerobic method is aeration, which increases the dissolved oxygen content in wastewater, thereby increasing the activity of microorganisms in the water and providing conditions for decomposing organic matter. The aeration process can also act as a disturbance, so that the organic matter, microorganisms, and dissolved oxygen are well mixed to improve the removal efficiency. Existing traditional aeration equipment generally aerates through a single direct air blowing method, and controls the size of the aeration volume and the size of the bubbles by controlling the size of the aperture and the power of the blower. Long-term aeration may easily cause some aeration holes to be blocked, and pollutants Deposition inside the tube makes the aeration amount uneven and the bubbles generated are large, which leads to low mass transfer efficiency, low dissolved oxygen content, high energy consumption, low efficiency, and poor removal effect during the aeration process. Long-term use Post-aeration equipment is prone to aging and clogging, and the cost of equipment use is relatively high.

Compared with the ordinary bubbles produced by blast aeration, the microbubbles produced by the aerosol release method have large specific surface area, long residence time, high mass transfer efficiency, uniform aeration, and rich in strong oxidizing free radicals, etc. advantage. However, the amount of microbubbles generated by a single air-dissolving and degassing method is small, and a sufficient amount of microbubbles cannot be efficiently generated.

On the other hand, the existing aeration equipment has a low degree of intelligence, and the aeration process requires manual monitoring and operation and control of the aeration equipment to adjust the aeration volume, which consumes a lot of manpower.

Contents of the invention

Purpose of the invention: The technical problem to be solved by the present invention is to provide an aeration head for generating enhanced microbubbles for the deficiencies of the prior art.

In order to solve the above technical problems, the present invention provides an aeration head for generating enhanced microbubbles, the aeration head includes an aeration branch pipe for entering external air, a gas moisture pipe for entering aerosol water, and an aeration membrane A sheet, an inner microbubble generating chamber, an outer aeration chamber and an adjustment mechanism. The inner microbubble generation chamber is used to receive the aerosolized water from the air-moisture pipe and generate microbubbles from the aerosolized water through the aerosol release method, and the microbubbles are discharged through the aeration membrane. The outer aeration chamber is used to receive the gas from the aeration branch pipe and discharge the gas through the aeration membrane. The adjustment mechanism is used to adjust the amount of gas flowing from the outer aeration chamber to the inner microbubble generation chamber.

In some embodiments, the aeration head includes an internal support and a mixing aeration tube. The internal support member is fixedly installed inside the aeration head. The mixing and aeration pipe runs through the inner support. The internal support and the mixed aeration pipe separate the interior of the aeration head to form an inner microbubble generation chamber and an outer aeration chamber. The side wall of the mixed aeration pipe is provided with a flow port for communicating with the microbubble generation chamber of the inner layer and the aeration chamber of the outer layer. The adjustment mechanism includes a movable outer tube that is movably sleeved on the outside of the mixed aeration pipeline to block the flow opening, and the movable outer tube can move back and forth along the mixed aeration pipeline to adjust the lower part of the movable outer tube Cover the area of the flow opening.

In some embodiments, the adjustment mechanism further includes a baffle and a return spring, the baffle is installed on the lower part of the movable outer tube, and the gas output by the aeration branch pipe is directed to the lower part of the baffle. The return spring is located between the mixing aeration pipe and the inner support, and the movable outer tube is connected to the inner support through the return spring. When the amount of gas output by the aeration branch pipe is increased, the pressure exerted on the baffle by the gas output by the aeration branch pipe increases, and the movable outer pipe moves along the mixed aeration pipe toward the The aeration diaphragm moves and compresses the return spring. When the amount of gas output by the aeration branch pipe is reduced, the pressure exerted on the baffle by the gas output by the aeration branch pipe decreases, and the movable outer pipe moves away from the direction movement of the aeration membrane. When the pressure exerted on the baffle by the gas output by the aeration branch pipe is in balance with the rebound force exerted by the return spring on the movable outer pipe, the movable outer pipe is in a stable position.

Thus, the present application can continuously adjust the area of the flow opening blocked by the lower part of the movable outer pipe by continuously adjusting the amount of gas output by the aeration branch pipe.

In some embodiments, the aeration head further includes a backwashing pipe, one end of the backwashing pipe passes through the outer aeration chamber and the inner support and extends to the outer wall of the movable outer pipe, Outer pipe backwashing holes are opened on the side wall of the movable outer pipe, and inner pipe backwashing holes are opened on the side wall of the mixed aeration pipe. When the amount of gas output by the aeration branch pipe reaches the maximum value, the movable outer pipe moves upward to the position where the return spring is fully compressed, and the backwash hole of the inner pipe, the backwash hole of the outer pipe and the backwash hole of the outer pipe The backwashing pipelines are connected in sequence.

In some embodiments, the aeration membrane is a double-layer aeration membrane, and the positions of micropores on the two membranes of the double-layer aeration membrane are interlaced.

In some embodiments, the mixed aeration pipeline communicates with the gas-moisture pipe through a decompression hole, and the aerosolized water from the gas-moisture pipe releases microbubbles to the mixed aeration pipeline through the decompression hole; The decompression hole is located below the flow port.

The present invention also provides an aeration device for generating enhanced micro-bubbles, the aeration device includes the above-mentioned aeration head for generating enhanced micro-bubbles, a double-suction pump, an air dissolving tank, an air pump, a water distribution pipe, an air distribution pipe, a dissolving An oxygen meter and a controller, the more than one aeration heads are located at the bottom of the water body in the aeration tank. The double-suction pump is provided with a first water inlet, a second water inlet and a water outlet, and the double-suction pump is used to pump external air from the first water inlet of the double-suction pump to the water outlet of the double-suction pump and to The water in the upper part of the water body in the aeration tank is pumped from the second water inlet of the double-suction pump to the water outlet of the double-suction pump to form air-water outlet in this way. The input end of the dissolved air tank communicates with the water outlet of the double suction pump for receiving the air and water outlet, and the output end of the dissolved air tank communicates with the air and water pipes of each aeration head through the water distribution pipe. The aerosolized water from the outlet of the aerosol tank is delivered to each aeration head. The air pump is used to pump external air from the air inlet of the air pump to the air outlet of the air pump, and the air outlet of the air pump communicates with the aeration branch pipes of each aeration head through the air distribution pipe. The dissolved oxygen meter is located in the water body of the aeration tank and is used for monitoring the dissolved oxygen content in the water body of the aeration tank. The double-suction pump, the air pump and the dissolved oxygen meter are all electrically connected to the controller, and the controller controls the start and stop of the double-suction pump based on the measured value from the dissolved oxygen meter. The start and stop of the air pump and the intake air volume of the air pump.

In some embodiments, the aeration equipment also includes a filter and a first pipeline, the filter is located on the upper part of the water body in the aeration tank, and the second water inlet of the double-suction pump passes through the first pipeline and the first pipeline. The filter communicates.

In some embodiments, the aeration device further includes a first air inlet pipe, a second air inlet pipe and a check valve, and the first water inlet of the double-suction pump communicates with the outside air through the first air inlet pipe. The air inlet of the air pump communicates with the outside air through the second air inlet pipe. The first check valve is located on the first pipeline.

The present invention provides an aeration method for generating enhanced microbubbles, which is implemented by using the above-mentioned aeration device for generating enhanced microbubbles, comprising the following steps:

Turn on the double-suction pump, the external air and the upper pool water of the water body in the aeration tank pass through the double-suction pump to form gas-water outlet. The gas-water effluent passes through the gas-dissolving tank to form gas-soluble water. The air-moisture pipe of the aeration head receives the aerosolized water, and the aerosolized water passes through the decompression holes of the aeration head to form microbubbles. The microbubbles enter the water body in the aeration tank sequentially through the inner microbubble generating chamber and the aeration membrane to increase the dissolved oxygen content in the water body.

The air pump is turned on, and the external air is pumped to the aeration sub-pipe of the aeration head, and the gas output by the aeration sub-pipe of the aeration head is toward the lower part of the baffle. By adjusting the air intake of the air pump, the area of the lower part of the movable outer tube is occluded, so as to adjust the amount of gas flowing from the outer aeration chamber to the inner microbubble generation chamber, including: when increasing the intake of the air pump When the air volume is high, the gas output by the aeration branch pipe drives the movable outer pipe to move upward along the mixed aeration pipe with the help of the baffle, reducing the area where the lower part of the movable outer pipe blocks the flow opening, and is used to increase the flow from the outer aeration chamber to the The gas volume of the microbubble generation chamber in the inner layer. When the air intake volume of the air pump is reduced, the gas output from the aeration branch pipe drives the movable outer pipe to move downward along the mixed aeration pipe with the help of the baffle, increasing the area of the lower part of the movable outer pipe to block the flow opening, which is used to reduce the flow rate from the outside. The amount of gas that flows from the layer aeration chamber to the inner layer microbubble generation chamber. The gas flowing from the outer layer aeration chamber to the inner layer microbubble generation chamber stirs the inner layer microbubble generation chamber to generate more microbubbles, and the generation of inner layer microbubbles is adjusted by adjusting the air intake of the air pump The amount of microbubbles in the cavity.

Further, an aeration method for generating enhanced microbubbles provided by the present invention also includes the following steps:

Turn on the double-suction pump and the air pump and adjust the intake air volume of the air pump to the maximum value, the movable outer pipe moves upward to the position where the return spring is fully compressed, the backwash hole of the inner pipe, the backwash hole of the outer pipe and the backwash The pipes are connected sequentially. Control the double-suction pump to switch between the open state and the stop state, and the microbubbles ejected from the decompression hole of the aeration head and the gas flowing from the outer aeration chamber to the inner microbubble generation chamber are mixed and then impacted. The inner wall of the inner microbubble generation chamber. The air-water mixture entrained with the pollutants on the inner wall of the inner microbubble generation chamber is discharged from the backwashing pipeline.

Beneficial effect:

(1) The aeration head of the present invention connects the aeration branch pipe and the aeration diaphragm by setting the outer layer aeration chamber, thereby allowing the outer layer aeration chamber to carry out direct aeration; by setting the gas moisture pipe to connect the inner layer microbubble generation chamber and the aeration diaphragm, so as to allow the inner layer microbubble generation chamber to perform aeration by aerosol release method; by setting the adjustment mechanism to adjust the amount of gas flowing from the outer layer aeration chamber to the inner layer microbubble generation chamber, When the outer layer aeration chamber is connected with the inner layer microbubble generation chamber, the gas flowing from the aeration branch pipe to the inner layer microbubble generation chamber disturbs the inner layer microbubble generation chamber, so that more microbubble generation chambers are generated in the inner layer Micro-bubbles increase the gas-water ratio of the gas-water mixture in the cavity generated by the micro-bubbles in the inner layer. Compared with a single method of dissolving air and degassing, the aeration head of this application produces more microbubbles; compared with a single direct aeration method, the aeration head of this application produces a sufficient amount of microbubbles, which solves the current problem The amount of aeration in the dissolved air release process is small, and the direct aeration method produces large bubbles, which leads to poor mass transfer of the bubbles and poor dissolved oxygen effect.

(2) In some embodiments of the present application, the interior of the aeration head is separated by an internal support member and a mixed aeration pipe to form an inner layer microbubble generation chamber and an outer layer aeration chamber, and the side wall of the mixed aeration pipe is opened for use. In order to communicate with the flow port of the inner layer microbubble generation chamber and the outer layer aeration chamber, a movable outer tube is provided to block the flow port by setting a movable sleeve on the outside of the mixing aeration pipe, and the movable outer tube can move along the mixing The aeration pipe moves back and forth in order to adjust the area of the flow opening blocked by the lower part of the movable outer pipe, thereby adjusting the amount of gas flowing from the outer aeration chamber to the inner microbubble generation chamber, thereby allowing the adjustment of the inner microbubble generation The amount of microbubbles generated in the cavity.

(3) In some embodiments of the present application, a baffle is provided at the lower part of the movable outer pipe, and the gas output by the aeration branch is directed toward the lower part of the baffle, so that the pressure of the gas output by the aeration branch on the baffle can drive the movable outer The pipe moves along the mixed aeration pipe; by setting a return spring between the mixed aeration pipe and the internal support, the return spring connects the movable outer pipe and the internal support; when increasing the amount of gas output by the aeration branch pipe, The pressure of the gas output by the aeration branch pipe on the baffle increases, and the movable outer tube moves toward the aeration diaphragm along the mixed aeration pipe under the action of the gas pressure and compresses the return spring; When the amount of gas output by the aeration branch pipe is small, the pressure exerted on the baffle by the gas output by the aeration branch pipe decreases, and the movable outer pipe moves away from the The direction of the aeration diaphragm moves; when the force exerted on the baffle by the gas output by the aeration branch pipe is balanced with the force exerted on the movable outer pipe by the return spring, the position of the movable outer pipe is stable. The adjustment mechanism of this embodiment controls the displacement of the movable outer pipe along the mixed aeration pipeline by means of the gas output by the aeration branch pipe, that is, controls the area of the flow opening blocked by the lower part of the movable outer pipe, thereby adjusting the gas flow output by the aeration branch pipe to the amount of the microbubble generation chamber in the inner layer, and then adjust the generation amount of microbubbles in the microbubble generation chamber in the inner layer.

(4) The aeration membrane of some embodiments of the present application adopts a double-layer aeration membrane, and the micropore positions on the two-layer membrane of the double-layer aeration membrane are interlaced; when the aeration head is in a non-working state , the two-layer diaphragm of the double-layer aeration diaphragm relies on its own elasticity to fit, so that impurities such as external sewage and sludge cannot enter the interior of the aeration head; when the aeration head is in working condition, the double-layer aeration diaphragm The two layers of membranes are separated so that the substances inside the aerator head can be discharged from the micropores.

(5) In some embodiments of the present application, the backwashing pipe that runs through the outer layer aeration chamber and the internal support, the backwashing hole of the outer pipe provided on the side wall of the movable outer pipe, and the sidewall of the mixed aeration pipe are provided. The backwash hole of the inner tube on the wall, when the gas volume output by the aeration branch pipe is increased to the maximum value, the return spring is in a fully compressed position, and the backwash hole of the inner tube, the backwash hole of the outer tube and the backwash pipe are connected in sequence; A large amount of gas flowing through the aeration branch pipe into the inner microbubble generation chamber mixes with the gas-water mixture in the inner layer microbubble generation chamber, then impacts the inner wall of the inner layer microbubble generation chamber and entrains the air from the inner wall of the inner layer microbubble generation chamber Attachments such as sludge and microorganisms; when the gas volume output by the aeration branch pipe reaches the maximum output value, the internal pressure of the microbubble generation chamber in the inner layer is greater than the external water pressure, and because the aeration diaphragm has resistance to the discharge of the gas-water mixture, Under the action of internal pressure, the air-water mixture entrained with sludge, microorganisms and other attachments is discharged through the backwash hole of the inner pipe, the backwash hole of the outer pipe and the backwash pipe in sequence; The way of water creates disturbances inside the microbubble generation cavity in the inner layer, making it easier for sludge, microorganisms and other attachments to be discharged into the water body along with the air-water mixture. Through the above process, the aeration head of the present application realizes the function of back flushing and cleaning.

(6) This application can control whether the air-moisture pipe feeds dissolved air water into the inner microbubble generation chamber, whether the aeration branch pipe delivers external air to the outer aeration chamber, and adjusts the amount of external gas delivered to the outer aeration chamber. Adjust the aeration mode of the aeration head of this application; when the gas moisture pipe inputs dissolved air water to the inner microbubble generation chamber, and the aeration branch pipe does not deliver external air to the outer aeration chamber, the aeration head is in the Aerosol release mode; when the gas water pipe does not input dissolved air water to the inner microbubble generation chamber, and the aeration branch pipe delivers external air to the outer aeration chamber, the aeration head is in the direct aeration mode; when the air water When the sub-pipe supplies dissolved air water to the inner micro-bubble generation chamber, and the aeration sub-pipe delivers external air to the outer aeration chamber but does not deliver the maximum amount of gas, the aeration head is in the mixed aeration mode; When the aeration chamber transports external air and outputs the maximum amount of gas, and the gas-moisture pipe intermittently inputs dissolved air water to the inner microbubble generation chamber, the aeration head is in the reverse flushing mode.

(7) The aeration equipment provided by this application can control the start and stop of the double-suction pump, the start and stop of the air pump, and the air intake of the air pump through the controller based on the measured value from the dissolved oxygen meter, and then adjust the aeration of the aeration equipment. Gas mode: When the controller controls the double-suction pump to start and the air pump to stop, the aeration equipment is in the aerosol release mode; The aeration equipment is in the direct aeration mode; when the controller controls the activation of the double suction pump, the air pump is enabled and the maximum gas volume is not output, the aeration equipment is in the mixed aeration mode; When the suction pump is switched between activation and deactivation, the aeration equipment is in the reverse flushing mode; The disadvantage of insufficient air bubble aeration; on the other hand, according to the change of dissolved oxygen content in the aeration tank, the aeration mode can be changed, the aeration process can be optimized, and energy consumption can be saved.

(8) The aeration equipment of the present application controls the start and stop of the double-suction pump, the start and stop of the air pump, and the air intake of the air pump based on the measured value from the dissolved oxygen meter by setting the controller, thereby reducing manpower operations, and simultaneously passing the dissolved oxygen meter It can monitor the dissolved oxygen in water in real time.

(9) The aeration equipment of the present application pumps the external air from the first water inlet of the double-suction pump to the water outlet of the double-suction pump through the double-suction pump and pumps the water in the upper part of the water body in the aeration tank from the second water inlet of the double-suction pump. The water inlet is pumped to the outlet of the double-suction pump, in this way, the air-water outlet is formed, and the air-water outlet returns to the bottom of the aeration tank through the process of dissolved air and degassing, so as to realize the return of sewage and form an external circulation process, extending the The residence time of the water treatment process.

Description of drawings

The advantages of the above and/or other aspects of the present invention will become clearer as the present invention will be further described in detail in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is a three-dimensional schematic diagram 1 of an aeration head for generating enhanced microbubbles provided by an embodiment of the present invention;

Fig. 2 is a top view of the aeration head shown in Fig. 1;

Fig. 3 is a perspective view II of the aeration head shown in Fig. 1;

Fig. 4 is a sectional view of the aeration head shown in Fig. 1;

Fig. 5 is a schematic diagram of the internal structure of the aeration head shown in Fig. 1;

Fig. 6 is a schematic structural diagram of an aeration device using the aeration head shown in Fig. 1 .

Detailed ways

The reference signs of the present invention are as follows:

Aeration tank 000, aeration head 100, aeration pipe 110, gas water pipe 120, aeration membrane 130, aeration head shell 140, internal support 150, backwashing pipe 151, mixed aeration pipe 160, reducing Pressure hole 161, flow port 162, inner pipe backwash hole 163, inner chamber 170, inner layer microbubble generation chamber 171, outer layer aeration chamber 172, outer pipe backwash hole 183, adjustment mechanism 190, baffle plate 191, Return spring 192, movable outer pipe 193, double suction pump 200, first water inlet 210, second water inlet 220, water outlet 230, first air inlet pipe 240, dissolved air tank 300, input end 310, output end 320, air pump 400, air inlet 410, air outlet 420, second air inlet pipe 430, water distribution pipe 500, air distribution pipe 600, dissolved oxygen meter 700, controller 800, filter 900, first pipeline 910, first check valve 920 .

The technical solution of the present application will be described in detail below in conjunction with the accompanying drawings.

The single direct aeration method controls the aeration volume and bubble size by controlling the aperture size and blower power. Due to the influence of pore size, the bubbles generated by a single direct aeration method are relatively large, and after a long time of aeration, some pores are easily blocked, and the gas cannot cover the entire top of the aeration head, resulting in uneven aeration volume, and then It leads to problems such as low mass transfer efficiency, low dissolved oxygen content, high energy consumption, low efficiency, and poor removal effect during the aeration process. Compared with the ordinary bubbles produced by blast aeration, the microbubbles produced by the aerosol release method have large specific surface area, long residence time, high mass transfer efficiency, uniform aeration, and rich in strong oxidizing free radicals, etc. advantage. However, because the gas dissolution and release method needs to be pressurized to dissolve the gas in water, the whole process is discontinuous, resulting in a small amount of microbubbles generated by a single method of gas dissolution and degassing, which cannot efficiently generate a sufficient amount of microbubbles.

As shown in FIGS. 1 to 4 , the present application provides an aeration head for generating enhanced microbubbles. The aeration head 100 can be installed at the bottom of a water body in an aeration tank 000 . The aerator head 100 is in the shape of a shower as a whole, and the outer wall has a radian of 90° to 145°. The aeration head 100 includes an aeration branch pipe 110 for entering external air, an air moisture pipe 120 for entering aerosol water, an aeration membrane 130, an inner microbubble generation chamber 171, an outer aeration chamber 172 and Adjustment mechanism 190. The inner microbubble generating chamber 171 is used to receive the aerosolized water from the air-moisture pipe 120 and generate microbubbles in the aerosolized water through the aerosol release method, and the microbubbles are discharged through the aeration membrane 130 . The outer aeration chamber 172 is used to receive the gas from the aeration branch pipe 110 and discharge the gas through the aeration membrane 130 . The adjusting mechanism 190 is used to adjust the amount of gas flowing from the outer aeration chamber 172 to the inner microbubble generating chamber 171 . In the present application, the external air may be external air.

The aeration head of the present invention communicates with the aeration branch pipe 110 and the aeration membrane 130 by setting the outer aeration chamber 172 , thereby allowing the outer aeration chamber 172 to perform direct aeration. The air-moisture pipe 120 is provided to connect the inner layer microbubble generation chamber 171 with the aeration membrane 130, thereby allowing the inner layer microbubble generation chamber 171 to be aerated by aerosol release. The amount of gas flowing from the outer aeration chamber 172 to the inner microbubble generation chamber 171 is adjusted by setting the adjustment mechanism 190. The gas flowing into the inner layer microbubble generation chamber 171 disturbs the inner layer microbubble generation chamber 171, so that more microbubbles are generated in the inner layer microbubble generation chamber 171, and the gas-water mixture in the inner layer microbubble generation chamber 171 is increased. air-to-water ratio. Compared with the single air-dissolving and degassing method, the aeration head 100 of the present application generates more microbubbles. Compared with the single direct aeration method, the aeration head 100 of the present application generates a sufficient amount of microbubbles, which solves the problem that the current dissolved air release process has a small amount of aeration, and the direct aeration method produces large bubbles, which leads to mass transfer of the bubbles. Poor, poor effect of dissolved oxygen.

In some embodiments, as shown in FIG. 4 , the mixed aeration pipeline 160 communicates with the air-moisture pipe 120 through a decompression hole 161, and the aerosolized water from the air-moisture pipe 120 releases micro bubble. The decompression hole 161 is located below the flow port 162 . In some examples, the diameter of the decompression hole 161 ranges from 500 μm to 1500 μm. The size range of the microbubbles generated by the dissolved air water passing through the decompression hole 161 is 0.5-2 mm.

In some embodiments, the aeration head 100 includes an inner support 150 and a mixing aeration pipe 160 . The internal support member 150 is fixedly installed inside the aeration head 100 . The mixing aeration pipe 160 runs through the inner support 150 . The inner support member 150 and the mixing aeration pipe 160 separate the interior of the aeration head 100 to form an inner microbubble generation chamber 171 and an outer aeration chamber 172 . The side wall of the mixed aeration pipeline 160 is provided with a flow port 162 for connecting the inner microbubble generation chamber 171 and the outer aeration chamber 172 . The adjustment mechanism 190 includes a movable outer tube 193 that is movably sleeved on the outside of the mixing aeration pipeline 160 to block the flow opening 162. The movable outer tube 193 can move back and forth along the mixing aeration pipeline 160 for adjusting the movement of the movable outer tube 193. The lower part covers the area of the flow port 162 .

When the movable outer tube 193 blocks the flow port 162, the air-dissolved water is input into the air-moisture pipe 120, and the dissolved air water releases microbubbles through the decompression hole 161, and the microbubbles pass through the inner microbubble generation chamber 171 and the aeration diaphragm 130 After discharge, that is, the aeration is completed in the inner layer microbubble generation chamber 171 by the method of dissolved air and degassing.

When the aeration branch pipe 110 outputs gas, the movable outer pipe 193 moves up along the mixing aeration pipe 160 and exposes the flow port 162, the outer layer aeration chamber 172 communicates with the inner layer microbubble generation chamber 171, and the gas flows through the aeration branch pipe 110. The gas to the inner layer microbubble generation chamber 171 disturbs the inner layer microbubble generation chamber 171, so that more microbubbles are generated in the inner layer microbubble generation chamber 171, and the gas-water mixture in the inner layer microbubble generation chamber 171 is increased. water ratio. Compared with the single method of aeration through the dissolved air release method, the above process combines the direct aeration method with the dissolved air release method to generate more microbubbles. At the same time, the application can adjust the aeration by adjusting the output gas volume of the aeration branch pipe 110 or adjusting the displacement of the movable outer pipe 193 along the mixed aeration pipe 160, that is, controlling the area of the lower part of the movable outer pipe 193 to block the flow port 162 The amount of the gas output from the branch pipe 110 flows to the inner microbubble generation chamber 171 , thereby realizing the control of the generation amount of microbubbles in the inner layer microbubble generation chamber 171 .

In some examples, the flow port 162 is an elliptical hole, the length of the major axis of the elliptical hole is 0.5 cm, and the length of the minor axis is 0.2 cm. In some examples, the number of circulation ports 162 ranges from 3 to 5, and these circulation ports 162 are evenly distributed along the circumference of the mixing and aeration pipeline 160 .

Specifically, as shown in FIG. 4 , the aeration membrane 130 is located on the top of the aeration head 100 . The aeration membrane 130 is connected with the aeration head housing 140 of the aeration head 100 to form an inner chamber 170 of the aeration head 100 . The inner support 150 is fixedly installed inside the inner chamber 170 , and the outer peripheral edge of the inner support 150 is connected with the aeration membrane 130 . The inner support 150 and the mixing aeration pipe 160 separate the inner chamber 170 of the aeration head 100 to form an inner microbubble generation chamber 171 and an outer aeration chamber 172 . The inner surface of the inner microbubble generation chamber 171 includes the top outer surface of the inner support 150 , the inner surface of the aeration membrane 130 and the inner wall surface of the mixing aeration pipe 160 . The inner wall of the outer aeration chamber 172 includes the outer surface of the side wall of the inner support member 150 , the inner surface of the aeration membrane 130 , the inner wall surface of the aeration head shell 140 and part of the outer wall surface of the mixing aeration pipe 160 .

In some embodiments, as shown in Figure 4 and Figure 5, the adjustment mechanism 190 further includes a baffle 191 and a return spring 192, the baffle 191 is installed on the lower part of the movable outer tube 193, and the gas output by the aeration branch 110 is directed toward the baffle Lower part of 191. The return spring 192 is located between the mixing aeration pipe 160 and the inner support 150 , and the movable outer tube 193 is connected to the inner support 150 through the return spring 192 . When the amount of gas output by the aeration branch pipe 110 is increased, the pressure exerted by the gas output by the aeration branch pipe 110 on the baffle plate 191 increases, and the movable outer pipe 193 moves toward the aeration membrane along the mixed aeration pipe 160 under the action of the gas pressure. 130 moves and compresses return spring 192 . When the amount of gas output by the aeration branch pipe 110 is reduced, the pressure exerted by the gas output by the aeration branch pipe 110 on the baffle plate 191 decreases, and the movable outer pipe 193 moves away from the aeration diaphragm 130 under the force of the return spring 192 direction of movement. When the force exerted by the gas output by the aeration branch pipe 110 on the baffle plate 191 is in balance with the force exerted by the return spring 192 on the movable outer tube 193, the position of the movable outer tube 193 is stable, so that the output of the aerator head 100 is slightly The amount of air bubbles remains stable, thereby allowing the aeration head 100 provided in this embodiment to continuously adjust the amount of microbubbles output by the aeration head 100 by continuously adjusting the amount of gas output by the aeration branch pipe 110 .

In this embodiment, the adjustment mechanism 190 controls the displacement of the movable outer pipe 193 along the mixed aeration pipe 160 by means of the gas output by the aeration branch pipe 110, that is, controls the area of the lower part of the movable outer pipe 193 to block the flow opening 162, thereby Adjust the amount of gas output from the aeration branch pipe 110 to flow into the inner microbubble generation chamber 171 , and then adjust the generation amount of microbubbles in the inner layer microbubble generation chamber 171 .

In some examples, the baffle 191 and the movable outer tube 193 can be made of PP plastic. Return spring 192 is selected corrosion-resistant stainless steel material for use. In some examples, the lower part of the outer wall of the mixing aeration pipe 160 is provided with a limiting part for supporting the movable outer pipe 193 . When the aeration branch pipe 110 does not output gas, the return spring 192 is in a natural state, and the limiting part is in contact with the bottom of the movable outer pipe 193 .

In some embodiments, as shown in Figures 3 to 5, the aeration membrane 130 can adopt a double-layer aeration membrane, and the positions of the micropores on the two layers of the aeration membrane 130 are staggered. When the head is in the non-working state, the two layers of the aeration membrane 130 rely on their own elasticity to fit together, so that impurities such as external sewage and sludge cannot enter the inner microbubble generation chamber 171 and the outer aeration chamber 172. When the aeration head is in working condition, the two membranes of the aeration membrane 130 are separated so that the gas-water mixture containing microbubbles in the inner microbubble generation chamber 171 and the gas in the outer aeration chamber 172 can be discharged from the micropores. . In some examples, the diameters of the micropores on the two-layer membranes range from 0.5 mm to 2 mm.

In some embodiments, the aeration head also includes a backwashing pipe 151, one end of the backwashing pipe 151 passes through the outer aeration chamber 172 and the inner support 150 and extends to the outer side wall of the movable outer pipe 193, the movable outer pipe Outer pipe backwash holes 183 are opened on the side wall of 193 , and inner pipe backwash holes 163 are opened on the side wall of the mixing aeration pipe 160 . When the double-suction pump 200 and the air pump 400 are turned on and the gas volume output by the aeration branch pipe 110 is increased to the maximum output value, the force exerted by the gas output by the aeration branch pipe 110 on the baffle plate 191 is increased to the maximum, so that the movable outer pipe 193 is upward Moving to the position where the return spring 192 is fully compressed, the backwash hole 163 of the inner tube, the backwash hole 183 of the outer tube and the backwash pipeline 151 are connected in sequence.

At this time, a large amount of gas flows from the aeration branch pipe 110 into the inner layer microbubble generation chamber 171 and mixes with the gas-water mixture in the inner layer microbubble generation chamber 171, then impacts the inner wall of the inner layer microbubble generation chamber 171 and entrains the gas from the inner layer. Attachments such as sludge and microorganisms on the inner wall of the microbubble generating chamber 171 . When the gas volume output by the aeration branch pipe 110 reaches the maximum output value, the internal pressure of the inner microbubble generation chamber 171 is greater than the external water pressure, and because the aeration diaphragm 130 has resistance to the discharge of the gas-water mixture, the effect of the internal pressure Next, the air-water mixture entrained with sludge, microorganisms and other attachments is discharged through the backwash hole 163 of the inner pipe, the backwash hole 183 of the outer pipe and the backwash pipe 151 in sequence. Then, the air-water pipe 120 is regularly supplied and stopped to supply air-dissolved water, so as to form a disturbance inside the inner microbubble generation chamber 171, so that sludge, microorganisms and other attachments are more easily discharged to the water body with the air-water mixture middle. Through the above process, the aerator head 100 of this embodiment realizes its own backwash cleaning.

When the aeration head 100 has poor aeration effect after being used for a long time, the aeration head 100 can be self-cleaned through the above process, thereby prolonging the service life of the aeration head 100 . Poor aeration effect means that the dissolved oxygen content in water increases slowly or the amount of air bubbles decreases.

In some examples, the backwash hole 163 of the inner tube, the backwash hole 183 of the outer tube, and the backwash pipe 151 have the same inner hole diameter, and the inner hole diameter ranges from 0.3 to 0.4 mm.

In some examples, the size of the flow port 162 along the direction of the mixing aeration pipe 160 is greater than or equal to the stroke of the movable outer tube 193, so that when the gas output from the aeration branch pipe 110 is increased to the maximum output value, the flow port 162 is not moved outside. The area covered by the lower part of the tube 193 reaches the maximum, so that the gas output by the aeration branch pipe 110 can flow more into the inner microbubble generation chamber 171, so as to make full use of the gas output by the aeration branch pipe 110 and further improve the performance of the aeration head 100. Back flush cleaning power.

As shown in Figure 6, the present invention also provides an aeration device for generating enhanced microbubbles. The aeration equipment includes the aforementioned aeration head 100 for generating enhanced microbubbles, a double suction pump 200 , an air dissolving tank 300 , an air pump 400 , a water distribution pipe 500 , an air distribution pipe 600 , a dissolved oxygen meter 700 and a controller 800 . More than one aeration head 100 is located at the bottom of the water body in the aeration tank 000 and the aeration membrane 130 of the aeration head 100 faces the water surface of the aeration tank 000 . The double-suction pump 200 is provided with a first water inlet 210, a second water inlet 220 and a water outlet 230, and the double-suction pump 200 is used to pump external air from the first water inlet 210 of the double-suction pump 200 to the side of the double-suction pump 200. The water outlet 230 and the water in the upper part of the water body in the aeration tank 000 are pumped from the second water inlet 220 of the double suction pump 200 to the water outlet 230 of the double suction pump 200 to form air-water outlet in this way.

The input end 310 of the dissolved air tank 300 communicates with the water outlet 230 of the double-suction pump 200 for receiving air-water outlet. The output end 320 of the dissolved air tank 300 communicates with the gas water pipe 120 of each aeration head 100 through the water distribution pipe 500. When the dissolved air tank 300 reaches the preset pressure value, the output end 320 of the dissolved air tank 300 outputs aerated water And deliver it to each aeration head 100.

The air pump 400 is used to pump external air from the air inlet 410 of the air pump 400 to the air outlet 420 of the air pump 400 , and the air outlet 420 of the air pump 400 communicates with the aeration branch pipe 110 of each aeration head 100 through the air distribution pipe 600 . The dissolved oxygen meter 700 is located in the water body of the aeration tank 000 and is used to monitor the dissolved oxygen content in the water body of the aeration tank 000 . The double-suction pump 200, the air pump 400 and the dissolved oxygen meter 700 are all electrically connected to the controller 800, and the controller 800 controls the start and stop of the double-suction pump 200, the start and stop of the air pump 400 and the air pump based on the measured value from the dissolved oxygen meter 700. 400 air intake.

The present invention adjusts the aeration mode of the aeration device by setting the controller 800 to control the start and stop of the double suction pump 200 , the start and stop of the air pump 400 and the air intake of the air pump 400 based on the measured value from the dissolved oxygen meter 700 . When the controller 800 controls the double suction pump 200 to start and the air pump 400 to stop, the aeration device is in the aerosol release mode. When the controller 800 controls the double suction pump 200 to be deactivated, the air pump 400 to be activated and the maximum air volume is not output, the aeration device is in the direct aeration mode. When the controller 800 controls the activation of the double suction pump 200 and the activation of the air pump 400 without outputting the maximum gas volume, the aeration device is in the mixed aeration mode. When the controller 800 controls the air pump 400 to activate and output the maximum gas volume, and the double-suction pump 200 is switched between activation and deactivation, the aeration device is in the reverse flushing mode.

In some embodiments, the controller 800 can also control the power of the double-suction pump 200 based on the measured value from the dissolved oxygen meter 700, so as to adjust the intake volume of the first water inlet 210 and the second inlet of the double-suction pump 200. The amount of water entering the water port 220 can further adjust the aeration amount of the aerator head 100 .

In some examples, the gas-water ratio of the double-suction pump 200 ranges from 1:8 to 1:11. In some examples, the gas solution tank 300 is made of a pressure-resistant material, such as carbon steel or stainless steel. The dissolved air tank 300 may be provided with a pressure sensor. In some examples, the preset pressure range of the dissolved air tank 300 is 0.4-0.6 MPa. When the pressure sensed by the sensor reaches a preset pressure range, the output end 320 of the dissolved air tank 300 outputs dissolved water.

In some examples, the air distribution pipe 600 is made of PVC or PE. The water distribution pipe 500 is made of PPR or PE material.

In some embodiments, the aeration equipment further includes a filter 900 and a first pipeline 910, the filter 900 is located on the upper part of the water body in the aeration tank 000, and the second water inlet 220 of the double suction pump 200 passes through the first pipeline 910 communicates with filter 900 . The first pipeline 910 can be made of corrosion-resistant materials, such as PVC, ABS or PP.

In this embodiment, impurities such as water sludge existing in the upper part of the water body in the aeration tank 000 are filtered out by setting a filter.

In some embodiments, the aeration device further includes a first inlet pipe 240 and a second inlet pipe 430 , and the first water inlet 210 of the double-suction pump 200 communicates with the outside air through the first inlet pipe 240 . The air inlet 410 of the air pump 400 communicates with the outside air through the second air inlet pipe 430 .

In some embodiments, the aeration device further includes a first check valve 920 , and the first check valve 920 is located on the first pipeline 910 .

In some embodiments, the aeration device further includes a second check valve and a third check valve, the second check valve is located on the first air inlet pipe 240, and the third check valve is located on the second air inlet pipe 430, It is used to prevent the backflow of water and air caused by the shutdown of the air pump 400 and the double-suction pump 200 , thereby causing the reverse rotation of the drive motor of the air pump 400 and the drive motor of the double-suction pump 200 .

The present invention also provides an aeration method for generating enhanced microbubbles. The implementation of the aeration method uses an aeration device for generating enhanced microbubbles provided by the application, including the following steps:

Turn on the double-suction pump 200, the external air and the upper pool water of the water body in the aeration tank 000 pass through the double-suction pump 200 to form gas-water outlet. The gas-water effluent passes through the gas-dissolving tank 300 to form gas-soluble water. The air-moisture pipe 120 of the aeration head 100 receives aerosol water, and the aerosol water passes through the decompression hole 161 of the aeration head 100 to form micro-bubbles. The microbubbles enter the water body in the aeration tank 000 through the inner microbubble generating chamber 171 and the aeration membrane 130 in order to increase the dissolved oxygen content in the water body.

When the air pump 400 is turned on, the external air is pumped to the aeration branch pipe 110 of the aeration head 100 , and the gas output from the aeration branch pipe 110 of the aeration head 100 is toward the lower part of the baffle plate 191 . By adjusting the air intake of the air pump 400 to adjust the lower part of the movable outer tube 193 to block the area of the flow port 162, so as to adjust the gas flow from the outer layer aeration chamber 172 to the inner layer microbubble generation chamber 171, including: when increasing When the intake air volume of the air pump 400 is high, the gas output by the aeration branch pipe 110 drives the movable outer pipe 193 to move upward along the mixed aeration pipe 160 by means of the baffle plate 191, thereby reducing the area where the lower part of the movable outer pipe 193 blocks the flow port 162, and uses To increase the amount of gas flowing from the outer aeration chamber 172 to the inner microbubble generation chamber 171 . When the intake air volume of the air pump 400 is reduced, the gas output by the aeration branch pipe 110 drives the movable outer pipe 193 to move downward along the mixed aeration pipe 160 by means of the baffle 191, thereby increasing the lower part of the movable outer pipe 193 to block the flow opening 162 The area is used to reduce the amount of gas flowing from the outer layer aeration chamber 172 to the inner layer microbubble generation chamber 171 . The gas flowing from the outer aeration chamber 172 to the inner microbubble generation chamber 171 stirs the inner microbubble generation chamber 171 to generate more microbubbles, and the inner microbubble generation chamber 171 is adjusted by adjusting the air intake of the air pump 400 The amount of microbubbles inside.

An aeration method for generating enhanced microbubbles provided by the application also includes the following steps:

Turn on the double suction pump 200 and the air pump 400 and adjust the air intake of the air pump 400 to the maximum value, the movable outer pipe 193 moves upward to the position where the return spring 192 is fully compressed, the inner pipe backwash hole 163, the outer pipe backwash hole 183 and the reverse The flushing pipes 151 communicate sequentially. Control the double-suction pump 200 to switch between the open state and the stop state, and the air-water mixture containing microbubbles discharged from the decompression hole 161 of the aeration head 100 flows from the outer layer aeration chamber 172 to the inner layer microbubble generation chamber The gas in 171 is mixed and impacts the inner wall of the microbubble generation chamber 171 in the inner layer. The air-water mixture entrained with the attachments on the inner wall of the inner microbubble generation chamber 171 is discharged through the backwash hole 163 of the inner tube, the backwash hole 183 of the outer tube and the backwash pipe 151 in sequence.

The waste water in the aeration tank is treated respectively by using the common aeration equipment which adopts the gas-dissolving and release-gas method for aeration, the single microporous aeration equipment which adopts the blast aeration method for aeration, and the aeration equipment provided by the present invention. , COD (Chemical Oxygen Demand, chemical oxygen demand) removal rate, oxygen utilization rate, service life, energy consumption, intelligent degree and other performance parameters of each equipment are shown in the table below. It can be seen from the following table 1 that the aeration equipment provided by the present invention combines the advantages of the two aeration methods of the aerosol release method and the direct aeration method. Compared with the other two equipments, it has high oxygen utilization rate and COD removal rate. The advantages of high efficiency, long service life, high degree of intelligence and low energy consumption can meet the aerobic aeration process.

Table 1 Comparison of various types of equipment

The present invention provides an idea and method of an aeration head, aeration equipment and an aeration method for generating enhanced microbubbles. There are many methods and approaches for realizing the technical solution, and the above are only preferred embodiments of the present invention. It should be pointed out that those skilled in the art can make some improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. All components that are not specified in this embodiment can be realized by existing technologies.

Claims (10)

1. An aeration head that produces strengthened microbubbles is characterized in that the aeration head (100) includes an aeration branch pipe (110) for entering external air, an air moisture pipe (120) for entering aerosolized water ), an aeration diaphragm (130), an inner microbubble generation chamber (171), an outer aeration chamber (172) and an adjustment mechanism (190); The inner microbubble generation chamber (171) is used to receive the aerosolized water from the gas-moisture pipe (120) and generate microbubbles through the aerosol-release method of the aerosolized water, and the microbubbles pass through the The aeration diaphragm (130) is discharged; an outer aeration chamber (172), configured to receive gas from the aeration branch pipe (110) and discharge the gas through the aeration membrane (130); The adjusting mechanism (190) is used to adjust the amount of gas flowing from the outer aeration chamber (172) to the inner microbubble generation chamber (171). 2. An aeration head for generating enhanced microbubbles according to claim 1, characterized in that it comprises an internal support (150) and a mixing aeration pipe (160); the internal support (150) is fixedly installed Inside the aeration head (100); the mixing aeration pipe (160) runs through the internal support (150); the internal support (150) and the mixing aeration pipe (160) connect the inside of the aeration head (100) The inner layer microbubble generation chamber (171) and the outer layer aeration chamber (172) are separated and formed; the side wall of the mixed aeration pipeline (160) is provided with an inner layer microbubble generation chamber (171) and the outer layer aeration chamber. The flow port (162) of the cavity (172); the adjustment mechanism (190) includes a movable outer tube (193) that is movably sleeved on the outside of the mixing aeration pipe (160) for blocking the flow port (162) , the movable outer pipe (193) can move back and forth along the mixing aeration pipe (160), and is used to adjust the area of the lower part of the movable outer pipe (193) that blocks the flow opening (162). 3. An aerator head for generating enhanced microbubbles according to claim 2, characterized in that the adjustment mechanism (190) further comprises a baffle (191) and a return spring (192), and the baffle ( 191) is installed at the lower part of the movable outer pipe (193), and the gas output by the aeration branch pipe (110) is directed towards the lower part of the baffle (191); the return spring (192) is located in the mixed aeration pipe ( 160) and the internal support (150), the movable outer pipe (193) is connected to the internal support (150) through the return spring (192); when increasing the aeration branch pipe (110) When the amount of output gas is increased, the pressure exerted by the gas output by the aeration branch pipe (110) on the baffle (191) increases, and the movable outer pipe (193) moves along the mixed aeration pipeline under the action of gas pressure. (160) moves toward the aeration diaphragm (130) and compresses the return spring (192); when the gas output from the aeration branch pipe (110) is reduced, the gas The pressure exerted on the baffle (191) decreases, and the movable outer tube (193) moves away from the aeration membrane (130) under the force of the return spring (192). 4. A kind of aeration head that produces strengthened microbubble according to claim 3, is characterized in that, this aeration head (100) also comprises backwash pipe (151), and one end of described backwash pipe (151) Pass through the outer aeration chamber (172) and the inner support (150) and extend to the outer side wall of the movable outer tube (193), the side wall of the movable outer tube (193) is provided with The backwash hole (183) of the outer pipe, and the backwash hole (163) of the inner pipe is opened on the side wall of the mixed aeration pipe (160); when the gas output from the aeration branch pipe (110) reaches the maximum value , the movable outer tube (193) moves upward to the position where the return spring (192) is fully compressed, the inner tube backwash hole (163), the outer tube backwash hole (183) and the backwash Pipeline (151) communicates successively. 5. An aeration head for generating enhanced microbubbles according to claim 4, characterized in that, the aeration membrane (130) is a double-layer aeration membrane, and the double-layer aeration membrane The positions of micropores on the two layers of membranes are staggered with each other. 6. An aeration head for generating enhanced microbubbles according to any one of claims 1 to 5, characterized in that, the mixed aeration pipeline (160) communicates with all Described gas-moisture pipe (120), the aerosol water from described gas-moisture pipe (120) releases microbubble to mixed aeration pipeline (160) through described decompression hole (161); Said decompression hole (161) Located below the flow port (162). 7. An aeration device for generating enhanced microbubbles, characterized in that it comprises more than one aeration head (100) for generating enhanced microbubbles, a double-suction pump (200), a dissolved air tank (300), air pump (400), water distribution pipe (500), air distribution pipe (600), dissolved oxygen meter (700) and controller (800), and the above one aeration head (100) is located in the aeration tank (000) at the bottom of the water body; the double-suction pump (200) is provided with a first water inlet (210), a second water inlet (220) and a water outlet (230), and the double-suction pump (200) is used for The external air is pumped from the first water inlet (210) of the double-suction pump (200) to the water outlet (230) of the double-suction pump (200) and the water in the upper part of the water body in the aeration tank (000) is pumped from the double-suction pump The second water inlet (220) of (200) is pumped to the water outlet (230) of double-suction pump (200), forms air-water outlet water in this way; The input end (310) of described dissolved air tank (300) It communicates with the water outlet (230) of the double-suction pump (200) for receiving the air-water outlet, and the output end (320) of the dissolved air tank (300) is connected with each aeration pipe (500) through the water distribution pipe (500). The gas water pipe (120) of head (100) is communicated, is used for the aerosol water delivery to each aeration head (100) from the output end (320) of dissolving tank (300); Described air pump (400) is used for External air is pumped from the air inlet (410) of the air pump (400) to the air outlet (420) of the air pump (400), and the air outlet (420) of the air pump (400) is connected with each aeration pipe (600) through the air distribution pipe (600). The aeration branch pipe (110) of the gas head (100) is connected; the dissolved oxygen meter (700) is located in the water body of the aeration tank (000), and is used for monitoring the dissolved oxygen content in the water body of the aeration tank (000); The double-suction pump (200), the air pump (400) and the dissolved oxygen meter (700) are all electrically connected to the controller (800) respectively, and the controller (800) is based on the The measured value of the instrument (700) is used to control the start and stop of the double suction pump (200), the start and stop of the air pump (400) and the intake air volume of the air pump (400). 8. The aeration device for generating enhanced microbubbles according to claim 7, further comprising a filter (900) and a first pipeline (910), and the filter (900) is located at the aeration In the upper part of the water body in the pool (000), the second water inlet (220) of the double suction pump (200) communicates with the filter (900) through the first pipeline (910); Air pipe (240), second air inlet pipe (430) and check valve (920), the first water inlet (210) of the double suction pump (200) communicates with the outside air through the first air inlet pipe (240) The air inlet (410) of the air pump (400) communicates with the outside air through the second air inlet pipe (430); the first check valve (920) is located on the first pipeline (910). 9. An aeration method for generating enhanced microbubbles, characterized in that, using the aeration device for generating enhanced microbubbles according to any one of claims 7 to 8, comprising the following steps: Turn on the double-suction pump (200), and the external air and the upper pool water in the aeration tank (000) will pass through the double-suction pump (200) to form air-water outlet water; the air-water outlet water will pass through the air-dissolving tank (300) Form aerosol water; the air moisture pipe (120) of the aeration head (100) receives the aerosol water, and the aerosol water forms microbubbles through the decompression holes (161) of the aeration head (100), The microbubbles enter the water body in the aeration tank (000) through the inner microbubble generation chamber (171) and the double-layer aeration membrane, and are used to increase the amount of water in the aeration tank (000). dissolved oxygen content; Turn on the air pump (400), and the external air is pumped to the aeration branch pipe (110) of the aeration head (100), and the gas output by the aeration branch pipe (110) is towards the bottom of the baffle plate (191); by adjusting the air pump (400) to adjust the area of the lower part of the movable outer tube (193) to block the flow opening (162), so as to adjust the flow from the outer layer aeration chamber (172) to the inner layer microbubble generation chamber (171) Gas volume, including: When the air intake of the air pump (400) is increased, the gas output by the aeration branch pipe (110) drives the movable outer pipe (193) to move upward along the mixed aeration pipe (160) by means of the baffle (191), reducing the movable outer pipe (160). The lower part of the pipe (193) blocks the area of the flow port (162), which is used to increase the amount of gas flowing from the outer layer aeration chamber (172) to the inner layer microbubble generation chamber (171); when reducing the air pump (400 ), the gas output by the aeration branch pipe (110) drives the movable outer pipe (193) to move downward along the mixed aeration pipe (160) with the help of the baffle (191), increasing the pressure of the movable outer pipe (193) The lower part shields the area of the flow opening (162), which is used to reduce the amount of gas flowing from the outer layer aeration chamber (172) to the inner layer microbubble generation chamber (171); the outer layer aeration chamber (172) The gas flowing into the inner layer microbubble generation chamber (171) stirs the inner layer microbubble generation chamber (171) to generate more microbubbles, and the inner layer is adjusted by adjusting the air intake of the air pump (400). The amount of microbubbles in the microbubble generating chamber (171). 10. A kind of aeration method that produces strengthened microbubble according to claim 9, is characterized in that, also comprises the following steps: Turn on the double-suction pump (200) and the air pump (400) and adjust the air intake of the air pump (400) to the maximum value, the movable outer tube (193) moves upward to the position where the return spring (192) is fully compressed, and the inner The pipe backwash hole (163), the outer pipe backwash hole (183) and the backwash pipeline (151) are connected in sequence; the double-suction pump (200) is controlled to switch between the open state and the stop state, and the aeration head ( The air-water mixture containing microbubbles discharged from the decompression hole (161) of 100) is mixed with the gas flowing from the outer layer aeration chamber (172) to the inner layer microbubble generation chamber (171) and then impacts the inner layer The inner wall of the microbubble generation chamber (171); the air-water mixture entrained with the attachments on the inner wall of the microbubble generation chamber (171) is discharged from the backwashing pipe (151).

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