CN214456984U

CN214456984U - Dissolved air flotation machine

Info

Publication number: CN214456984U
Application number: CN202120250807.6U
Authority: CN
Inventors: 陈建军
Original assignee: Shandong Xuantu Environmental Protection Technology Co ltd
Current assignee: Shandong Xuantu Environmental Protection Technology Co ltd
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2021-10-22
Anticipated expiration: 2031-01-29

Abstract

The utility model relates to the technical field of sewage treatment equipment, in particular to a dissolved air flotation machine which accelerates the floating speed of microbubbles, continuously dissolves air in water to generate new microbubbles, improves the purification speed and purification effect of the device on sewage, recycles water resources, saves energy and improves the use effect of the device; including the air supporting machine main part, PLC control panel, first baffle, the second baffle, the fixed plate, dissolve the gas pitcher, the air-pressure pump, the connecting pipe, the slagging-off machine, the blow off pipe, the collection thing case, the layer board, first filter screen, the active carbon adsorbs the net, the aeration pipe, the aeration machine, suction pump and wet return, the inside cavity that is provided with in right side of air supporting machine main part, PLC control panel fixes the front end left side in the air supporting machine main part, and be provided with display screen and control button on the PLC control panel, the vertical right side at air supporting machine main part cavity of fixing of first baffle, the upper portion at air supporting machine main part cavity is transversely fixed to the second baffle.

Description

Dissolved air flotation machine

Technical Field

The utility model relates to a sewage treatment device's technical field especially relates to a dissolve gas air supporting machine.

Background

As is well known, a dissolved air flotation machine is an auxiliary device for purifying sewage, which is widely used in the field of sewage treatment equipment; along with the rapid development of society, industrial waste water, domestic sewage's emission has seriously destroyed the water environment that the human beings rely on for the existence, brings very big hidden danger to human health, consequently, need can discharge after concentrating the water purification treatment industrial waste water, domestic sewage, and dissolved air flotation machine is the equipment that can remove the suspended solid in the sewage, and its theory of operation is: utilize the air-pressure pump to produce a large amount of microbubbles in aqueous, the microbubble adsorbs on the suspended solid, and the suspended solid rises along with the microbubble to get rid of the suspended solid, reach sewage treatment's purpose, current air supporting machine relies on the buoyancy of microbubble self to drive the suspended solid and rises, leads to the device to the purifying rate of sewage slower, and the easy continuous fracture of microbubble leads to the purifying effect of device relatively poor.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an accelerated the come-up speed of microbubble, the new microbubble of production is dissolved in aqueous to the messenger air that is also continuous simultaneously, has improved the purification rate and the purifying effect of device to sewage to cyclic utilization water resource, the energy saving improves the dissolved air flotation machine of its result of use.

The utility model relates to a dissolved air flotation machine, which comprises an air flotation machine main body, a PLC control panel, a first clapboard, a second clapboard, a fixed plate, a dissolved air tank, an air pressure pump, a connecting pipe, a slag remover, a blow-off pipe, a collection box, a supporting plate, a first filter screen, an activated carbon adsorption net, an aeration pipe, an aerator, a water pump and a water return pipe, wherein a cavity is arranged inside the right side of the air flotation machine main body, the PLC control panel is fixed on the left side of the front end of the air flotation machine main body, a display screen and a control button are arranged on the PLC control panel, the first clapboard is vertically fixed on the right side of the cavity of the air flotation machine main body, the second clapboard is transversely fixed on the upper part of the cavity of the air flotation machine main body, the fixed plate is fixed on the upper part of the right end of the cavity of the air flotation machine main body and is positioned above the second clapboard, the dissolved air tank is fixed on the top end of the fixed plate, the output end of the air pressure pump is communicated with the bottom end of the dissolved air tank, the air pressure pump is fixed plate on the second clapboard, one end of the connecting pipe is communicated with the left end of the dissolved air tank, the other end of the connecting pipe passes through the second clapboard and the supporting plate and is communicated with the bottom of the right end of the first clapboard, the slag remover is fixed in the middle of the right end of the first clapboard, the blow-off pipe is communicated with the right end of the first clapboard and is positioned below the slag remover, the output end of the blow-off pipe is positioned above the collection box, the collection box is fixed at the right end of the first clapboard through the supporting plate, the first filter screen and the activated carbon adsorption net are fixed in the cavity of the air flotation machine main body and are connected with the bottom of the left end of the first clapboard, the first filter screen is positioned above the activated carbon adsorption net and is positioned below the connecting pipe, the aeration pipe is also fixed in the cavity of the air flotation machine main body and is positioned below the activated carbon adsorption net, a plurality of groups of aeration holes are arranged on the aeration pipe, and the right end of the aeration pipe is connected with the output end of the aeration machine, the aeration machine is fixed in the bottom of air supporting machine main part cavity to be located the right side of first baffle, and the suction pump is fixed in the right-hand member bottom of air supporting machine main part cavity, the input of suction pump and the right-hand member bottom intercommunication of first baffle, the output and the wet return of suction pump are connected, and the other end of wet return passes second baffle and fixed plate, and with the right-hand member intercommunication that dissolves the gas pitcher, and PLC control panel and air-compression pump, the equal electric connection of slagging-off machine and aeration machine.

The utility model relates to a dissolved air flotation machine, which also comprises a flocculating agent box, a first motor, a stirring shaft, a plurality of groups of stirring rods, a second filter screen, a drain pipe and a solenoid valve, wherein the flocculating agent box is fixed at the top end of the main body of the air flotation machine, the cushion of the flocculating agent box is provided with an injection pipe which is communicated with the top end of the main body of the air flotation machine, the first motor is fixed on the upper part of the right end of the first clapboard and is positioned above the second clapboard, the output end of the first motor is connected with the stirring shaft, the stirring shaft is rotationally connected with the first clapboard, and a plurality of groups of stirring rods are uniformly fixed on the stirring shaft, a second filter screen is fixed in the cavity of the main body of the air flotation machine, is connected with the upper part of the left end of the first clapboard and is positioned above the second clapboard, and the drain pipe communicates with the bottom left side of second baffle, and the solenoid valve is fixed on the drain pipe to solenoid valve and PLC control panel electric connection.

The utility model discloses a dissolve gas air supporting machine still includes second motor, axis of rotation and helical blade, and the second motor is fixed on the top of flocculating agent case, the output and the rotation axis connection of second motor to the axis of rotation is connected with the rotation of flocculating agent case, and helical blade fixes in the axis of rotation.

The utility model discloses a dissolve gas air supporting machine still includes multiunit landing leg, connecting plate, multiunit cushion and multiunit slipmat, and the multiunit landing leg is evenly fixed in the bottom of air supporting machine main part, and the connecting plate is fixed between the multiunit landing leg to the bottom at the landing leg is fixed to the cushion, and the slipmat is fixed in the bottom of cushion.

The utility model discloses a dissolve gas air supporting machine still includes chamber door and multiunit hinge, and air supporting machine main part front end right side is provided with the access hole, and the chamber door covers the access hole to it is articulated through the hinge with the air supporting machine main part to chamber door, is provided with the attacker on the chamber door.

The utility model discloses a dissolve gas air supporting machine still includes the observation window, and the observation window is fixed at air supporting machine main part front end middle part.

The utility model discloses a dissolve gas air supporting machine, the material of air supporting machine main part is the stainless steel.

Compared with the prior art, the beneficial effects of the utility model are that: air is pressed into the air dissolving tank through the air pressure pump, so that water in the air dissolving tank forms micro bubbles, the micro bubbles are injected into the left side of the first partition plate through the connecting pipe to be mixed with sewage, impurities in the sewage are driven to float upwards by the micro bubbles, the floating impurities are discharged into the collection tank through the slag remover through the discharge pipe, meanwhile, the aeration machine and the aeration pipe are used in cooperation to continuously aerate the water, and the first filter screen and the activated carbon adsorption screen are used to filter the sewage, so that the floating speed of the micro bubbles is increased, meanwhile, the air is continuously dissolved in the water to generate new micro bubbles, thereby improving the purification speed and the purification effect of the device on the sewage, and use the water after will partly evolving to reinject into in the dissolved air jar through the cooperation of suction pump and wet return, generate new water that contains the microbubble, make full use of water resource, the energy saving improves the result of use of device.

Drawings

Fig. 1 is a schematic front view of the internal structure of the present invention;

FIG. 2 is a front view of the main body of the air floatation machine of the present invention;

fig. 3 is an enlarged schematic view of the utility model at a;

fig. 4 is an enlarged schematic view of the utility model at B;

in the drawings, the reference numbers: 1. a main body of the air flotation machine; 2. a PLC control panel; 3. a first separator; 4. a second separator; 5. a fixing plate; 6. a dissolved air tank; 7. an air pressure pump; 8. a connecting pipe; 9. a slag remover; 10. a blow-off pipe; 11. a collection box; 12. a support plate; 13. a first filter screen; 14. an activated carbon adsorption net; 15. an aeration pipe; 16. an aerator; 17. a water pump; 18. a water return pipe; 19. a flocculant box; 20. a first motor; 21. a stirring shaft; 22. a stirring rod; 23. a second filter screen; 24. a drain pipe; 25. an electromagnetic valve; 26. a second motor; 27. a rotating shaft; 28. a helical blade; 29. a support leg; 30. a connecting plate; 31. cushion blocks; 32. a non-slip mat; 33. a box door; 34. a hinge; 35. and (4) an observation window.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in fig. 1 to 4, the present invention relates to a dissolved air flotation machine, which comprises an air flotation machine main body 1, a PLC control panel 2, a first partition plate 3, a second partition plate 4, a fixing plate 5, a dissolved air tank 6, an air pressure pump 7, a connecting pipe 8, a slag remover 9, a blow-off pipe 10, a collection box 11, a support plate 12, a first filter screen 13, an activated carbon adsorption screen 14, an aeration pipe 15, an aeration machine 16, a water suction pump 17 and a water return pipe 18, wherein a cavity is arranged inside the right side of the air flotation machine main body 1, the PLC control panel 2 is fixed on the left side of the front end of the air flotation machine main body 1, a display screen and a control button are arranged on the PLC control panel 2, the first partition plate 3 is vertically fixed on the right side of the cavity of the air flotation machine main body 1, the second partition plate 4 is transversely fixed on the upper portion of the cavity of the air flotation machine main body 1, the fixing plate 5 is fixed on the upper portion of the right end of the air flotation machine main body 1 and is located above the second partition plate 4, the dissolved air tank 6 is fixed on the top end of the fixed plate 5, the output end of the air pressure pump 7 is communicated with the bottom end of the dissolved air tank 6, the air pressure pump 7 is fixed on the second clapboard 4, one end of the connecting pipe 8 is communicated with the left end of the dissolved air tank 6, the other end passes through the second clapboard 4 and the supporting plate 12 and is communicated with the bottom of the right end of the first clapboard 3, the slag remover 9 is fixed in the middle of the right end of the first clapboard 3, the blow-off pipe 10 is communicated with the right end of the first clapboard 3 and is positioned below the slag remover 9, the output end of the blow-off pipe 10 is positioned above the collection box 11, the collection box 11 is fixed on the right end of the first clapboard 3 through the supporting plate 12, the first filter screen 13 and the activated carbon adsorption screen 14 are fixed in the cavity of the air flotation machine main body 1 and are connected with the bottom of the left end of the first clapboard 3, the first filter screen 13 is positioned above the activated carbon adsorption screen 14, the first filter screen 13 is positioned below the connecting pipe 8, the aeration pipe 15 is also fixed in the cavity of the air flotation machine main body 1 and is positioned below the activated carbon adsorption net 14, a plurality of groups of aeration holes are formed in the aeration pipe 15, the right end of the aeration pipe 15 is connected with the output end of the aeration machine 16, the aeration machine 16 is fixed at the bottom end of the cavity of the air flotation machine main body 1 and is positioned on the right side of the first partition plate 3, the water suction pump 17 is fixed at the bottom of the right end of the cavity of the air flotation machine main body 1, the input end of the water suction pump 17 is communicated with the bottom of the right end of the first partition plate 3, the output end of the water suction pump 17 is connected with the water return pipe 18, the other end of the water return pipe 18 penetrates through the second partition plate 4 and the fixed plate 5 and is communicated with the right end of the dissolved air tank 6, and the PLC control panel 2 is electrically connected with the air-pressure pump 7, the slag remover 9 and the aeration machine 16; air is pressed into the dissolved air tank 6 through the air pressure pump 7, so that water in the dissolved air tank 6 forms micro bubbles, the micro bubbles are injected into the left side of the first partition plate 3 through the connecting pipe 8 and mixed with sewage, the micro bubbles drive impurities in the sewage to float upwards, the floating impurities are discharged into the object collecting box 11 through the slag removing machine 9 through the sewage discharge pipe 10, meanwhile, the aeration is continuously carried out into the water through the matching use of the aerator 16 and the aerator pipe 15, the sewage is filtered through the first filter screen 13 and the activated carbon adsorption net 14, the floating speed of the micro bubbles is accelerated, meanwhile, the air is continuously dissolved into the water to generate new micro bubbles, the purification speed and the purification effect of the device on the sewage are improved, and partial evolved water is re-injected into the dissolved air tank 6 through the matching use of the water suction pump 17 and the water return pipe 18, new water containing the micro bubbles is generated, and the water resource is fully utilized, energy is saved, and the use effect of the device is improved.

The utility model discloses a dissolved air flotation machine, still include flocculating agent case 19, first motor 20, the (mixing) shaft 21, multiunit stirring rod 22, second filter screen 23, drain pipe 24 and solenoid valve 25, flocculating agent case 19 is fixed on the top of air flotation machine main part 1, flocculating agent case 19's pad is provided with the filling tube, the filling tube communicates with the top of air flotation machine main part 1, and first motor 20 is fixed on the right-hand member upper portion of first baffle 3, be located the top of second baffle 4, and the output of first motor 20 is connected with (mixing) shaft 21, (mixing) shaft 21 rotates with first baffle 3 and is connected, and multiunit stirring rod 22 evenly fixes on (mixing) shaft 21, second filter screen 23 is fixed in air flotation machine main part 1 cavity, and with first baffle 3 left end upper portion connection, and be located the top of second baffle 4, and drain pipe 24 communicates with the bottom left side of second baffle 4, the electromagnetic valve 25 is fixed on the drain pipe 24, and the electromagnetic valve 25 is electrically connected with the PLC control panel 2; inject into air supporting machine main part 1 with the flocculating agent in the flocculating agent case 19 in, and drive (mixing) shaft 21 and stirring rod 22 through first motor 20 and rotate, make sewage and flocculating agent intensive mixing, make the particle impurity in the sewage tentatively condense and subside, and filter through second filter screen 23, treat to open through 2 control solenoid valve 25 of PLC control panel after the certain time, make the sewage of tentatively purifying discharge the below of second baffle 4 and the water mixing that contains the microbubble through drain pipe 24, the purifying effect of the improving means to sewage.

The utility model discloses a dissolved air flotation machine, still include second motor 26, axis of rotation 27 and helical blade 28, second motor 26 is fixed at the top of flocculating agent case 19, and the output of second motor 26 is connected with axis of rotation 27 to axis of rotation 27 is connected with flocculating agent case 19 rotation, and helical blade 28 is fixed on axis of rotation 27; drive axis of rotation 27 and helical blade 28 through second motor 26 and rotate, stir the flocculating agent, ensure that the flocculating agent can be smoothly discharged into air supporting machine main part 1 from the injection pipe of flocculating agent case 19 bottom, improve the stability in use of device.

The utility model discloses a dissolved air flotation machine, still include multiunit landing leg 29, connecting plate 30, multiunit cushion 31 and multiunit slipmat 32, multiunit landing leg 29 evenly fixes the bottom in air flotation machine main part 1, and connecting plate 30 fixes between multiunit landing leg 29, and cushion 31 fixes the bottom in landing leg 29, and slipmat 32 fixes the bottom in cushion 31; by arranging the supporting legs 29, the connecting plates 30, the cushion blocks 31 and the non-slip mats 32, the device is prevented from shifting or inclining in use, and the use stability of the device is further improved.

The utility model discloses a dissolved air flotation machine, still include chamber door 33 and multiunit hinge 34, the right side of the front end of the main body 1 of the flotation machine is provided with the access hole, the chamber door 33 covers the access hole, and the chamber door 33 is articulated with the main body 1 of the flotation machine through the hinge 34, the chamber door 33 is provided with the buckle; through setting up chamber door 33 and hinge 34, be convenient for carry out regular change and maintenance to the spare part in the air supporting machine main part 1, shorten the maintenance duration, improve the use convenience of device.

The utility model discloses a dissolved air flotation machine, which also comprises an observation window 35, wherein the observation window 35 is fixed in the middle of the front end of the main body 1 of the air flotation machine; through setting up observation window 35, be convenient for observe the filtration condition of sewage in the air supporting machine main part 1, further improve the use convenience of device.

The utility model relates to a dissolved air flotation machine, the material of the main body 1 of the air flotation machine is stainless steel; through setting up stainless steel, improve the structural strength of device to the difficult water corrosion of stainless steel improves the life of device.

The utility model discloses a dissolved air flotation machine, it is at work, at first pour into the flocculating agent in flocculating agent case 19 into flotation machine main part 1, and drive (mixing) shaft 21 and puddler 22 through first motor 20 and rotate, make sewage and flocculating agent intensive mixing, make the particle impurity in the sewage carry out preliminary coagulation and subside, and filter through second filter screen 23, after a certain time open through PLC control panel 2 control solenoid valve 25, make the sewage of preliminary purification arrange into the below of second baffle 4 through drain pipe 24, improve the purifying effect of device to sewage, later drive axis of rotation 27 and helical blade 28 through second motor 26 and rotate, stir the flocculating agent, ensure that the flocculating agent can be smoothly discharged into flotation machine main part 1 from the injection pipe of flocculating agent case 19 bottom, improve the stability in use of device, then press into the air to dissolved air tank 6 through air-pressure pump 7, the water in the dissolved air tank 6 forms micro bubbles and is injected into the left side of the first clapboard 3 through the connecting pipe 8 to be mixed with the sewage, the micro bubbles drive the impurities in the sewage to float upwards, and the floating impurities are discharged into a collection box 11 through a discharge pipe 10 by a slag remover 9, meanwhile, the aerator 16 and the aerator pipe 15 are used in cooperation to continuously aerate the water, and the sewage is filtered through the first filter screen 13 and the activated carbon adsorption screen 14, thereby not only increasing the floating speed of the microbubbles, meanwhile, the air is continuously dissolved in the water to generate new micro bubbles, thereby improving the purification speed and the purification effect of the device on the sewage, and the water after partial evolution is re-injected into the dissolved air tank 6 by the matching use of the water suction pump 17 and the water return pipe 18, so as to generate new water containing micro-bubbles, fully utilize water resources, save energy and improve the use effect of the device.

The installation mode, the connection mode or the arrangement mode of the dissolved air flotation machine of the utility model are common mechanical modes, and the dissolved air flotation machine can be implemented as long as the beneficial effects can be achieved; the utility model discloses a PLC control panel 2, air-pressure pump 7, slagging-off machine 9, aeration machine 16 and solenoid valve 25 of dissolved air flotation machine are purchase on the market, and this industry technical staff only need install and operate according to its subsidiary instructions can.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A dissolved air flotation machine is characterized by comprising a flotation machine main body (1), a PLC control panel (2), a first partition plate (3), a second partition plate (4), a fixing plate (5), a dissolved air tank (6), an air pressure pump (7), a connecting pipe (8), a slag removing machine (9), a blow-off pipe (10), a collection box (11), a support plate (12), a first filter screen (13), an activated carbon adsorption screen (14), an aeration pipe (15), an aeration machine (16), a water suction pump (17) and a water return pipe (18), wherein a cavity is arranged inside the right side of the flotation machine main body (1), the PLC control panel (2) is fixed on the left side of the front end of the flotation machine main body (1), a display screen and a control button are arranged on the PLC control panel (2), the first partition plate (3) is vertically fixed on the right side of the cavity of the flotation machine main body (1), the second partition plate (4) is transversely fixed on the upper part of the cavity of the flotation machine main body (1), and the fixed plate (5) is fixed on the upper part of the right end of the cavity of the air flotation machine main body (1) and is positioned above the second clapboard (4), the dissolved air tank (6) is fixed on the top end of the fixed plate (5), the output end of the air pressure pump (7) is communicated with the bottom end of the dissolved air tank (6), the air pressure pump (7) is fixed on the second clapboard (4), one end of the connecting pipe (8) is communicated with the left end of the dissolved air tank (6), the other end passes through the second clapboard (4) and the supporting plate (12) and is communicated with the bottom of the right end of the first clapboard (3), the slag remover (9) is fixed in the middle part of the right end of the first clapboard (3), the drain pipe (10) is communicated with the right end of the first clapboard (3) and is positioned below the slag remover (9), the output end of the drain pipe (10) is positioned above the collection box (11), the collection box (11) is fixed on the right end of the first clapboard (3) through the supporting plate (12), and the first filter screen (13) and the activated carbon adsorption screen (14) are fixed in the cavity of the air flotation machine main body (1) and connected with the bottom of the left end of the first partition board (3), the first filter screen (13) is positioned above the activated carbon adsorption screen (14), the first filter screen (13) is positioned below the connecting pipe (8), the aeration pipe (15) is also fixed in the cavity of the air flotation machine main body (1) and positioned below the activated carbon adsorption screen (14), a plurality of groups of aeration holes are arranged on the aeration pipe (15), the right end of the aeration pipe (15) is connected with the output end of the aerator (16), the aerator (16) is fixed at the bottom end of the cavity of the air flotation machine main body (1) and positioned at the right side of the first partition board (3), the water suction pump (17) is fixed at the bottom of the right end of the cavity of the air flotation machine main body (1), and the input end of the water suction pump (17) is communicated with the bottom of the right end of the first partition board (3), the output end of the water suction pump (17) is connected with the water return pipe (18), the other end of the water return pipe (18) penetrates through the second partition plate (4) and the fixing plate (5) and is communicated with the right end of the dissolved air tank (6), and the PLC control panel (2) is electrically connected with the air compression pump (7), the slag remover (9) and the aerator (16).

2. The dissolved air flotation machine according to claim 1, further comprising a flocculant box (19), a first motor (20), a stirring shaft (21), a plurality of groups of stirring rods (22), a second filter screen (23), a drain pipe (24) and an electromagnetic valve (25), wherein the flocculant box (19) is fixed at the top end of the air flotation machine main body (1), a pad of the flocculant box (19) is provided with an injection pipe which is communicated with the top end of the air flotation machine main body (1), the first motor (20) is fixed at the upper part of the right end of the first partition plate (3) and is positioned above the second partition plate (4), an output end of the first motor (20) is connected with the stirring shaft (21), the stirring shaft (21) is rotatably connected with the first partition plate (3), the plurality of groups of stirring rods (22) are uniformly fixed on the stirring shaft (21), the second filter screen (23) is fixed in a cavity of the air flotation machine main body (1), and be connected with first baffle (3) left end upper portion to be located the top of second baffle (4), and drain pipe (24) and the bottom left side intercommunication of second baffle (4), solenoid valve (25) are fixed on drain pipe (24), and solenoid valve (25) and PLC control panel (2) electric connection.

3. The dissolved air flotation machine according to claim 2, further comprising a second motor (26), a rotating shaft (27) and a spiral blade (28), wherein the second motor (26) is fixed to the top end of the flocculant tank (19), the output end of the second motor (26) is connected to the rotating shaft (27), the rotating shaft (27) is rotatably connected to the flocculant tank (19), and the spiral blade (28) is fixed to the rotating shaft (27).

4. The dissolved air flotation machine according to claim 3, further comprising a plurality of sets of legs (29), a connecting plate (30), a plurality of sets of cushion blocks (31) and a plurality of sets of anti-slip pads (32), wherein the plurality of sets of legs (29) are uniformly fixed at the bottom end of the air flotation machine main body (1), the connecting plate (30) is fixed between the plurality of sets of legs (29), the cushion blocks (31) are fixed at the bottom ends of the legs (29), and the anti-slip pads (32) are fixed at the bottom ends of the cushion blocks (31).

5. The dissolved air flotation machine according to claim 4, further comprising a box door (33) and a plurality of sets of hinges (34), wherein the right side of the front end of the air flotation machine main body (1) is provided with an access opening, the box door (33) covers the access opening, the box door (33) is hinged with the air flotation machine main body (1) through the hinges (34), and the box door (33) is provided with a buckle.

6. The dissolved air flotation machine according to claim 5, further comprising an observation window (35), wherein the observation window (35) is fixed in the middle of the front end of the air flotation machine main body (1).

7. The dissolved air flotation machine according to claim 6, wherein the material of the main body (1) of the flotation machine is stainless steel.