CN112266038A

CN112266038A - Cavitation air supporting machine that scrubbing efficiency is high

Info

Publication number: CN112266038A
Application number: CN202011242948.XA
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2021-01-26

Abstract

The invention relates to the field of sewage treatment equipment, and discloses a cavitation air flotation machine with high decontamination efficiency, which comprises a treatment tank, wherein an aeration pipe is arranged on one side in the treatment tank, a vent pipe is arranged in the middle of the aeration pipe, a rotating shaft is movably sleeved in the middle of the vent pipe, an impeller is arranged at the bottom of the rotating shaft, a motor set for driving the rotating shaft to rotate is arranged at the top of the treatment tank, a return pipe is communicated with one side of the bottom of the aeration pipe, a water inlet pipe positioned above the impeller is communicated with the side surface of the treatment tank, a water outlet pipe is arranged on the other side of the treatment tank, and a rubber diaphragm positioned on the inner side of the water inlet. This cavitation air supporting machine that scrubbing efficiency is high through the structural design of back flow department governing pipe, utilizes the current-limiting effect that extends to the current-limiting slide of back flow in the governing pipe for during sewage treatment, carry out the current-limiting to the sewage of handling the back backward flow, avoid backward flow sewage volume more, lead to the problem that the treatment effeciency of newly getting into sewage in the aeration pipe reduces.

Description

Cavitation air supporting machine that scrubbing efficiency is high

Technical Field

The invention relates to the field of sewage treatment equipment, in particular to a cavitation air flotation machine with high decontamination efficiency.

Background

The cavitation air flotation machine is sewage treatment equipment with low investment, high efficiency and low treatment cost, is special for removing grease, jelly and suspended solid in industrial and urban sewage, is favorable for environmental protection, and avoids the pollution to the environment caused by the difficulty in removing the grease, jelly, suspended solid and other impurities in the discharged sewage.

When carrying out sewage treatment, at first untreated sewage gets into super filter at first and carries out the preliminary treatment, obtain preliminary purification through screening filtration, the sewage after the processing is sent into the aeration region in the treatment tank, utilize the high-speed rotation of impeller, make the aquatic in the aeration pipe constitute a vacuum zone, make outside air get into the aquatic and fill the vacuum, oxygen in the air also melts into the aquatic thereupon, and utilize the unbalance of density between air water mixture and the liquid, produce perpendicular ascending buoyancy, thereby take the grease in the sewage, colloid and suspended solid to liquid level department, and utilize the mud scraper system of liquid level top to scrape mud and handle.

The bottom of aeration pipe can be put through with the treatment tank in current cavitation air supporting machine has the back flow, so that sewage after the processing is under the high-speed rotatory vacuum that produces of impeller, sewage backward flow after the processing, further carry out scrubbing treatment, with the guarantee scrubbing effect, however, because sewage treatment lasts and goes on, the grease that still contains in the sewage after the processing, colloid and solid suspension volume are and different, when the back flow latus rectum sets up great, can lead to backward flow sewage volume more, the treatment effeciency of newly getting into sewage in the aeration pipe reduces, when the back flow latus rectum sets up lessly, because of grease in the sewage, impurity such as colloid and solid suspension more assembles, and lead to the problem of back flow jam again.

Disclosure of Invention

The invention provides a cavitation air flotation machine with high decontamination efficiency, which has the advantage of high sewage treatment efficiency and solves the technical problems in the background technology.

In order to achieve the above purpose, the invention provides the following technical scheme to realize: a cavitation air flotation machine with high decontamination efficiency comprises a treatment tank, wherein one side inside the treatment tank is provided with an aeration pipe, the middle part of the aeration pipe is provided with a vent pipe, the middle part of the vent pipe is movably sleeved with a rotating shaft, the bottom of the rotating shaft is provided with an impeller, the top of the treatment tank is provided with a motor group for driving the rotating shaft to rotate, one side of the bottom of the aeration pipe is provided with a communicating return pipe, the side of the treatment tank is communicated with an inlet pipe positioned above the impeller, the other side of the treatment tank is provided with a water outlet pipe, the inside of the aeration pipe is provided with a rubber diaphragm positioned at the inner side of the inlet pipe, the side of the aeration pipe is fixedly connected with an adjusting pipe positioned above the return pipe, the middle part of the inner cavity of the adjusting pipe is fixedly sleeved with a sealing baffle plate, the top of the sealing baffle plate is fixedly connected with, the inner chamber of moving cavity and rubber diaphragm between piston and the partition board switches on mutually, the inner chamber switch on of inflator has first siphunculus, and the one end of first siphunculus extends to the below of the intraductal impeller of aeration, the inner chamber of control tube is equipped with the elastic diaphragm who is located partition board below, and elastic diaphragm's bottom fixed connection has the current-limiting slide, the bottom of current-limiting slide extends to the inside of back flow, and the top activity of current-limiting slide and back flow cup joints, the cavity between partition board and the elastic diaphragm switches on with the cavity between moving piston and the control tube top mutually.

Optionally, the inner chamber fixed cover of aeration pipe is equipped with the spacing board of deciding that is located the impeller top, and the middle part of spacing board of deciding has seted up logical groove, the spacing top fixedly connected with of deciding the board is located the spacing ring board that leads to the outer edge of groove, the fixed cover in the outside of spacing ring board is equipped with the registration arm, rubber diaphragm fixed connection is in one side of registration arm, and the inner chamber of rubber diaphragm and the inner chamber switch-on of registration arm, the inner chamber of registration arm and the cavity switch-on that seals between baffle and the removal piston have the third three-way pipe.

Optionally, a return spring is arranged between the sealing partition plate and the movable piston, and the return spring is movably sleeved on the outer side of the inflator.

Optionally, the inner portion of the adjusting tube is fixedly sleeved with a limiting ring plate located below the packing plate, and the outer edge of the elastic membrane is fixedly connected to the limiting ring plate.

Optionally, the bottom of the flow-limiting sliding plate is designed in an arc arch shape, the inner cavity of the return pipe and the flow-limiting sliding plate are designed in a rectangular shape, the height value of the flow-limiting sliding plate is greater than that of the inner cavity of the return pipe, and a sealing ring is arranged at the movable connection position of the flow-limiting sliding plate and the return pipe.

Optionally, the rotating diameter value of the impeller is the same as the diameter value of the through groove in the middle of the limiting and fixing plate, and the top of the limiting and fixing plate is close to the bottom of the water inlet pipe.

The invention provides a cavitation air flotation machine with high decontamination efficiency, which has the following beneficial effects:

1. this cavitation air supporting machine that scrubbing efficiency is high through the structural design of back flow department governing pipe, utilizes the current-limiting effect that extends to the current-limiting slide of back flow in the governing pipe for during sewage treatment, carry out the current-limiting to the sewage of handling the back backward flow, avoid backward flow sewage volume more, lead to the problem that the treatment effeciency of newly getting into sewage in the aeration pipe reduces.

2. This cavitation air supporting machine that scrubbing efficiency is high, in sewage treatment process, grease in the backward flow sewage, impurity such as colloid and suspended solid is more, assemble clearance department between current-limiting slide and back flow inner chamber bottom, when the inflow of restriction backward flow water, the negative pressure intensity increase in the inflator, make the removal piston plate move down, thereby increase the clearance between current-limiting slide and the back flow inner chamber bottom, with the sewage volume that improves the backward flow, be convenient for grease in the backward flow sewage, the further scrubbing of impurity such as colloid and suspended solid is handled, improve the scrubbing effect, still avoided because of grease in the sewage, impurity such as colloid and suspended solid more assembles, and lead to the problem of back flow jam.

3. This cavitation air supporting machine that scrubbing efficiency is high, through the spacing ring board, the registration arm, the structural design of rubber diaphragm, the cooperation is put through the design of rubber diaphragm inner chamber and control tube inner chamber, when making increase return water flow, the rubber diaphragm inflation, make the inflow of inlet tube department water reduce, thereby ensure that the air of entering handles the grease in the return water rapidly, impurity such as colloid and suspended solid, when improving sewage treatment effect, avoided because of grease in the sewage after the primary treatment, impurity such as colloid and suspended solid is not removed to the greatest extent, pile up more and more in return tube department, lead to the problem of return tube department jam.

4. This cavitation air supporting machine that scrubbing efficiency is high, still separate the working area of inlet tube and impeller through spacing board and spacing ring board of deciding, make the sewage that the inlet tube got into through spacing board of deciding, the spacing reposition of redundant personnel of spacing ring board, even flow is intraductal to the aeration, and utilize the effectual inlet tube of spacing ring board to transversely get into the intraductal sewage of aeration and cushion the pressure release, the sewage direct action that has avoided inlet tube department to get into is when the impeller is high-speed rotatory, influence grease in the sewage, the rising of impurity such as jelly and suspended solid, lead to the problem that sewage treatment efficiency reduces.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic sectional view of the structure regulating tube of FIG. 1 according to the present invention;

FIG. 3 is a schematic top view of the retainer ring plate of the structure of FIG. 2 according to the present invention.

In the figure: 1. a treatment tank; 101. a water inlet pipe; 2. an aeration pipe; 3. a breather pipe; 4. an impeller; 5. a limiting and fixing plate; 6. a limit ring plate; 7. a positioning tube; 8. a rubber diaphragm; 9. an adjusting tube; 901. sealing the partition plate; 902. an air cylinder; 903. moving the piston; 904. a return spring; 10. a return pipe; 11. a current limiting slide plate; 12. an elastic diaphragm; 121. a confinement ring plate; 13. a first through pipe; 14. a second pipe; 15. a third pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, a cavitation air flotation machine with high decontamination efficiency comprises a treatment tank 1, an aeration pipe 2 is arranged on one side inside the treatment tank 1, an aeration pipe 3 is arranged in the middle of the aeration pipe 2, a rotating shaft is movably sleeved in the middle of the aeration pipe 3, an impeller 4 is arranged at the bottom of the rotating shaft, a motor set for driving the rotating shaft to rotate is arranged at the top of the treatment tank 1, a return pipe 10 is communicated with one side of the bottom of the aeration pipe 2, a water inlet pipe 101 positioned above the impeller 4 is communicated with the side of the treatment tank 1, a water outlet pipe is arranged at the other side of the treatment tank 1, a rubber diaphragm 8 positioned at the inner side of the water inlet pipe 101 is arranged inside the aeration pipe 2, an adjusting pipe 9 positioned above the return pipe 10 is fixedly connected to the side of the aeration pipe 2, a sealing plate 901 is fixedly sleeved in the middle of an inner cavity of the adjusting pipe 9, an air cylinder, the outer side of the movable piston 903 is movably connected with the inner wall of the adjusting pipe 9, the cavity between the movable piston 903 and the partition board 901 is communicated with the inner cavity of the rubber diaphragm 8, the inner cavity of the air cylinder 902 is communicated with a first through pipe 13, one end of the first through pipe 13 extends to the lower part of the impeller 4 in the aeration pipe 2, the inner cavity of the adjusting pipe 9 is provided with an elastic diaphragm 12 positioned below the partition board 901, the bottom of the elastic diaphragm 12 is fixedly connected with a current-limiting sliding plate 11, the bottom of the current-limiting sliding plate 11 extends to the inner part of the return pipe 10, the current-limiting sliding plate 11 is movably sleeved with the top of the return pipe 10, the cavity between the partition board 901 and the elastic diaphragm 12 is communicated with the cavity between the movable piston 903 and the top of the adjusting pipe 9, the primarily purified sewage is sent into the aeration pipe 2 of the cavitation air flotation machine through the water inlet pipe 101, and the motor set is started to, the high-speed rotation of the impeller 4 is utilized to enable the water in the aeration pipe 2 to form a vacuum area, the air above the water surface enters the bottom of the aeration pipe 2 through the air pipe 3 to fill the vacuum area, micro bubbles are generated along with the air and spirally rise to the water surface, oxygen in the air is also blended into the water along with the micro bubbles, and vertical upward buoyancy is generated by utilizing the imbalance of density between an air-water mixture and liquid, so that grease, jelly and solid suspended matters in the sewage are brought to the liquid level, and a mud scraper system above the liquid level is utilized to carry out mud scraping treatment, when the cavitation air flotation machine works, the vacuum area generated by the high-speed rotation of the impeller 4 not only enables the oxygen in the air to enter the bottom of the aeration pipe 2, but also enables the water treated in the treatment tank 1 to flow back to the bottom of the aeration pipe 2 through the backflow pipe 10, thereby ensuring more thorough sewage treatment, under the flow limiting slide plate, the sewage quantity of the treatment tank 1 which flows back to the bottom of the aeration pipe 2 is controlled, the vacuum area generated by the high-speed rotation of the impeller 4 is ensured to ensure that the air quantity entering the vacuum area is sufficient, so that the oxygen quantity mixed in the sewage is sufficient, the treatment efficiency of the sewage is improved, when more impurities such as grease, jelly, solid suspended matters and the like exist in the return pipe 10, the impurities are gathered in the gap between the bottom of the flow-limiting sliding plate 11 and the return pipe 10, the return flow of the sewage is limited, the return flow of the sewage is reduced, under the condition that the vacuum strength generated by the high-suspension rotation of the impeller 4 is not changed, the water pressure in the air cylinder 902 is reduced through the connection of the first through pipe 13, the movable piston 903 moves downwards along with the impurities, the pressure of a chamber between the movable piston 903 and the sealing plate 901 is increased, the pressure in the inner cavity of the rubber diaphragm 8 is increased, the, meanwhile, the movable piston 903 moves downwards, the pressure of the chamber between the movable piston 903 and the top of the adjusting pipe 9 is reduced, under the connection of the second through pipe 14, the pressure of the chamber between the elastic diaphragm 12 and the sealing plate 901 is reduced, the flow-limiting sliding plate 11 moves upwards, so that the gap between the movable piston 903 and the adjusting pipe 10 is increased, the amount of returned sewage is increased, the returned sewage is treated again, the treatment effect of the sewage is improved, along with the continuous treatment of the sewage, the impurities such as grease, jelly, solid suspended matters and the like in the returned sewage are reduced, the flow-limiting strength of the gap between the flow-limiting sliding plate 11 and the return pipe 10 is reduced, the flow-limiting sliding plate 11 resets and moves downwards, the return flow is limited, at the moment, the movable piston 903 moves upwards, the pressure of the chamber between the movable piston 903 and the sealing plate 901 is reduced, the expansion degree of the rubber diaphragm 8 is reduced, the inflow of the sewage, the problem that the sewage quantity of the backflow in the treatment tank 1 is increased and the decontamination efficiency is affected due to the vacuum area generated by the high-speed rotation of the impeller 4 of the conventional cavitation air flotation machine is effectively solved.

Wherein, the inner cavity of the aeration pipe 2 is fixedly sleeved with a limit fixed plate 5 positioned above the impeller 4, the middle part of the limit fixed plate 5 is provided with a through groove, the top of the limit fixed plate 5 is fixedly connected with a limit ring plate 6 positioned at the outer edge of the through groove, the outer side of the limit ring plate 6 is fixedly sleeved with a positioning pipe 7, a rubber diaphragm 8 is fixedly connected at one side of the positioning pipe 7, the inner cavity of the rubber diaphragm 8 is communicated with the inner cavity of the positioning pipe 7, the inner cavity of the positioning pipe 7 and a cavity between the packing plate 901 and the movable piston 903 are communicated with a third three-way pipe 15, the working areas of the inlet pipe 101 and the impeller 4 are separated by the limit fixed plate 5 and the limit ring plate 6, so that the sewage entering the inlet pipe 101 passes through the limit fixed plate 5 and the limit shunt of the limit ring plate 6 and flows uniformly into the aeration pipe 2, and the effective inlet pipe 101 of the limit ring plate 6 is utilized to buffer the, the problem of the sewage treatment efficiency reduction that leads to of the ascending of impurity such as grease, jelly and suspended solid in the sewage when the high-speed rotation of impeller 4 is influenced in the sewage direct action that the inlet tube 101 department got into has been avoided.

Wherein, be equipped with reset spring 904 between packing board 901 and the removal piston 903, reset spring 904 activity suit is in the outside of inflator 902, in the backward flow sewage, assemble the back that impurity such as grease, colloid and solid suspended solid in back flow 10 and the clearance of current-limiting slide 11 reduce, under reset spring 904's elastic force effect, make removal piston 903 reset and shift up, thereby make current-limiting slide 11 move down, carry out the current-limiting to backward flow sewage, thereby ensure that impeller 4 is rotatory at a high speed down, the air of entering fully acts on the sewage that inlet tube 101 got into, thereby improve the treatment effeciency of sewage.

Wherein, the fixed cover in inside of regulating pipe 9 is equipped with and is located the limited crown plate 121 that seals baffle 901 below, and the outer edge fixed connection of elastic diaphragm 12 is on limiting crown plate 121, through installing elastic diaphragm 12 on limiting crown plate 121, thereby be convenient for elastic diaphragm 12 to install in regulating pipe 9, thereby be convenient for utilize elastic diaphragm 12's downward inflation degree, the clearance of the bottom of control current-limiting slide 11 and return pipe 10 inner chamber bottom, thereby when being convenient for control sewage treatment, the backward flow volume of sewage in the treatment basin 1.

Wherein, the bottom of the flow-limiting slide plate 11 is designed in an arc-arch shape, the inner cavity of the return pipe 10 and the flow-limiting slide plate 11 are both designed in a rectangular shape, the height value of the flow-limiting slide plate 11 is larger than that of the inner cavity of the return pipe 10, a sealing ring is arranged at the movable connection part of the flow-limiting slide plate 11 and the return pipe 10, so that when sewage is treated, when the treated sewage still contains more impurities such as grease, jelly, solid suspended matters and the like, the sewage in the aeration pipe 2 flows into the aeration pipe 2 for secondary decontamination through the gap between the bottom of the inner cavity of the return pipe 10 and the flow-limiting sliding plate 11, and as more grease, jelly, solid suspended matters and the like are blocked and limited at the gap between the bottom of the inner cavity of the return pipe 10 and the current-limiting sliding plate 11, a vacuum area formed by the high-speed rotation of the impeller 4 can drive the movable piston 903 to move downwards, thereby realizing the automatic upward movement of the flow-limiting sliding plate 11 to improve the return flow of the sewage in the aeration pipe 2.

Wherein, impeller 4's rotatory diameter value is the same with the diameter value that 5 middle parts of spacing board were led to the groove, and the bottom department that inlet tube 101 is close to at the top of spacing board 5, make impeller 4 when high-speed rotatory, can effectually act on the inside sewage of aeration pipe 2, the grease of being convenient for, upward flow such as jelly and suspended solid, and utilize spacing board 5 spacing, the sewage of avoiding the horizontal entering of inlet tube 101 causes the influence to impeller 4's rotation, thereby influence the high-speed rotatory vacuum area of impeller 4, the air volume that leads to getting into reduces, make the problem that sewage treatment efficiency reduces.

When the device is used, firstly, the motor set is started to start the impeller 4 at the bottom of the aeration pipe 2 to rotate, simultaneously, sewage after preliminary purification is conveyed into the aeration pipe 2 through the water inlet pipe 101, a vacuum area is formed in water in the aeration pipe 2 by utilizing the high-speed rotation of the impeller 4, air above the water surface enters the bottom of the aeration pipe 2 through the air pipe 3 to fill the vacuum area, micro bubbles are generated along with the air and spirally rise to the water surface, oxygen in the air is also melted into the water, and vertical upward buoyancy is generated by utilizing the imbalance of density between an air-water mixture and liquid, so that grease, jelly and solid suspended matters in the sewage are brought to the liquid surface, and a mud scraper system above the liquid surface is utilized to scrape mud, meanwhile, the treated sewage in the treatment tank 1 still contains the grease, the jelly and the solid suspended matters at the bottom of the treatment tank 1, and the treated sewage flows back to the aeration pipe 2 through the return pipe 10, the treatment is carried out again, when the amount of grease, jelly and solid suspended matters in the returned sewage is large, under the request that the gap between the flow-limiting sliding plate 11 and the bottom of the inner cavity of the return pipe 10 is limited to flow down, the amount of the returned water flowing into the aeration pipe 2 is reduced, the strength of the vacuum area of the high-speed rotation of the impeller 4 is not changed, the negative pressure in the air cylinder 902 is increased, the movable piston 903 is moved downwards, the pressure in the cavity between the elastic diaphragm 12 and the sealing plate 901 is reduced, the flow-limiting sliding plate 11 is moved upwards to increase the amount of the returned water in the treatment tank 1, meanwhile, the movable piston 903 is moved downwards to increase the pressure in the cavity between the movable piston 903 and the sealing plate 901, namely the pressure in the inner cavity of the rubber diaphragm 8 is increased and expanded, the amount of the water entering the water inlet pipe 101 is limited, when the amount of the introduced air is not changed, and (3) until the reduction of grease, jelly and solid suspended matters in the backflow water, the current-limiting sliding plate 11 is reset and moves downwards, and current limitation is carried out.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an efficient cavitation air supporting machine of scrubbing, includes treatment tank (1), one side of treatment tank (1) inside is equipped with aeration pipe (2), the middle part of aeration pipe (2) is equipped with breather pipe (3), the middle part movable sleeve of breather pipe (3) is equipped with the rotation axis, and the bottom of rotation axis is equipped with impeller (4), the top of treatment tank (1) is equipped with the rotatory motor group of drive rotation axis, one side of aeration pipe (2) bottom is equipped with the switch-on and has back flow (10), its characterized in that: the side surface of the treatment tank (1) is communicated with a water inlet pipe (101) positioned above the impeller (4), the other side of the treatment tank (1) is provided with a water outlet pipe, a rubber diaphragm (8) positioned on the inner side of the water inlet pipe (101) is arranged in the aeration pipe (2), the side surface of the aeration pipe (2) is fixedly connected with an adjusting pipe (9) positioned above a return pipe (10), the middle part of the inner cavity of the adjusting pipe (9) is fixedly sleeved with a sealing plate (901), the top part of the sealing plate (901) is fixedly connected with an air cylinder (902), the top part of the air cylinder (902) is fixedly connected with a movable piston (903), the outer side of the movable piston (903) is movably connected with the inner wall of the adjusting pipe (9), a cavity between the movable piston (903) and the sealing plate (901) is communicated with the inner cavity of the rubber diaphragm (8), the inner cavity of the air cylinder (902) is communicated with a, one end of the first through pipe (13) extends to the lower part of the impeller (4) in the aeration pipe (2), an elastic diaphragm (12) positioned below the sealing partition plate (901) is arranged in the inner cavity of the adjusting pipe (9), a flow limiting sliding plate (11) is fixedly connected to the bottom of the elastic diaphragm (12), the bottom of the flow limiting sliding plate (11) extends to the inside of the return pipe (10), the flow limiting sliding plate (11) is movably sleeved with the top of the return pipe (10), and a chamber between the sealing partition plate (901) and the elastic diaphragm (12) is communicated with a chamber between the movable piston (903) and the top of the adjusting pipe (9).

2. The cavitation air flotation machine with high decontamination efficiency according to claim 1, wherein: the inner chamber of aeration pipe (2) is fixed to be equipped with spacing board (5) of deciding that is located impeller (4) top, and the middle part of spacing board (5) has seted up logical groove, the top fixedly connected with of spacing board (5) is located spacing ring board (6) that lead to the outer edge of groove, the fixed cover in outside of spacing ring board (6) is equipped with registration arm (7), rubber diaphragm (8) fixed connection is in one side of registration arm (7), and the inner chamber of rubber diaphragm (8) and the inner chamber switch-on of registration arm (7), the inner chamber of registration arm (7) and the cavity switch-on of sealing between partition plate (901) and removal piston (903) have third three-way pipe (15).

3. The cavitation air flotation machine with high decontamination efficiency according to claim 1, wherein: a return spring (904) is arranged between the sealing plate (901) and the movable piston (903), and the return spring (904) is movably sleeved on the outer side of the air cylinder (902).

4. The cavitation air flotation machine with high decontamination efficiency according to claim 1, wherein: a limiting annular plate (121) positioned below the sealing partition plate (901) is fixedly sleeved in the adjusting pipe (9), and the outer edge of the elastic membrane (12) is fixedly connected to the limiting annular plate (121).

5. The cavitation air flotation machine with high decontamination efficiency according to claim 1, wherein: the bottom of the current-limiting sliding plate (11) is designed in an arc arch shape, the inner cavity of the return pipe (10) and the current-limiting sliding plate (11) are designed in a rectangular shape, the height value of the current-limiting sliding plate (11) is larger than the height value of the inner cavity of the return pipe (10), and a sealing ring is arranged at the movable connection position of the current-limiting sliding plate (11) and the return pipe (10).

6. The cavitation air flotation machine with high decontamination efficiency according to claim 1, wherein: the rotating diameter value of the impeller (4) is the same as the diameter value of the through groove in the middle of the limiting and fixing plate (5), and the top of the limiting and fixing plate (5) is close to the bottom of the water inlet pipe (101).