CN115594245A - Air flotation purification device for industrial wastewater treatment - Google Patents

Abstract

The invention relates to the technical field of industrial wastewater treatment, in particular to a gas floatation purification device for industrial wastewater treatment, which comprises: the waste slag cleaning device comprises a cylinder and a scraper, wherein a driving shaft is rotatably arranged in the cylinder, the driving shaft is connected with the scraper through a cleaning mechanism for cleaning waste slag, and an aeration mechanism for aeration is fixedly arranged at the bottom of the cylinder; clearance mechanism includes stopper, mounting bracket, floats piece and conveyer pipe, the bar groove has all been seted up to the drive shaft both sides, the movable sleeve is located about the mounting bracket the drive shaft outside, stopper one end with the mounting bracket inboard fixed surface links to each other, the other end slide set up in the bar inslot, the device purifying effect is good, is worth promoting.

Description

Air flotation purification device for industrial wastewater treatment

technical field

The invention relates to the technical field of industrial wastewater treatment, in particular to an air flotation purification device for industrial wastewater treatment.

Background technique

Air flotation plays a role in separating pollutants in sewage treatment. Using highly dispersed tiny air bubbles as a carrier to adhere to the pollutants in the wastewater, making the buoyancy greater than gravity and buoyancy resistance, so that the pollutants float to the water surface and form foam, and then scrape the foam from the water surface with scraping equipment to achieve solidification liquid or liquid-liquid separation. The necessary conditions for the air flotation process are: in the treated wastewater, a large number of fine air bubbles should be distributed, and the treated pollutants should be in a suspended state, and the surface of the suspended particles should be hydrophobic, easy to adhere to the air bubbles and float up. When using the air bubble method to purify the oil in the sewage, it is first necessary to add a coagulant and a flocculant to make the oil form a suspended matter floc, the oil will adhere to the air bubbles and float up, and the air bubbles will carry the oil in the sewage. Floating up, air bubbles and suspended matter residues will appear on the surface of the sewage, and then use the scraping equipment to remove the air bubbles and suspended matter residues.

However, the existing slag scraping equipment cannot be adjusted according to the change of the liquid level during the slag scraping process. In the specific purification process, the liquid level will inevitably rise and fall, and the slag scraper cannot Therefore, the scraping effect of the slag scraper is greatly reduced during the scraping process, and the air bubbles and scum on the sewage surface cannot be removed in time, which will affect the purification efficiency.

Contents of the invention

The purpose of the present invention is to solve the shortcomings of the prior art that the slag scraping equipment cannot be adjusted according to the change of the height of the sewage liquid level, and propose an air flotation purification device for industrial wastewater treatment.

In order to achieve the above object, the present invention adopts the following technical solutions:

Design an air flotation purification device for industrial wastewater treatment, including:

Cylinder and scraper, the inside of the cylinder is rotated with a drive shaft, the drive shaft and the scraper are connected through a cleaning mechanism for cleaning waste residues, and the bottom of the cylinder is also fixed and installed for use Aeration mechanism for aeration;

The cleaning mechanism includes a limit block, a mounting frame, a floating block and a delivery pipe. Bar grooves are provided on both sides of the drive shaft, and the mounting frame is movable up and down on the outside of the drive shaft. One end of the block is fixedly connected with the inner surface of the installation frame, and the other end is slidably arranged in the strip groove. A communication groove is opened on the surface of the drive shaft, and a conveying groove is opened inside the drive shaft. The conveying groove and the The communication groove is connected, the conveying pipe slides up and down in the communicating groove, one end of the conveying pipe is fixedly connected with the scraper, and the other end passes through the communicating groove and extends into the conveying groove. A floating block is fixedly installed on the outside of the mounting frame.

Preferably, the floating block is made of foam structure.

Preferably, a protection mechanism for waterproofing is fixedly installed under the communicating groove.

Preferably, the protection mechanism includes a movable block, a spring and a baffle, an installation cavity is opened inside the drive shaft and below the communication groove, the movable block is slid up and down inside the installation cavity, and the spring The lower end is fixedly connected with the upper surface of the movable block, the upper end is fixedly connected with the bottom of the installation cavity, the lower end of the baffle is fixedly connected with the middle part of the upper surface of the movable block, and the upper end penetrates and extends into the communicating groove. The end of the tube located inside the communication groove passes through the upper end of the baffle.

Preferably, the aeration mechanism includes a connecting pipe, an aeration head, a grille, a top pad and a block, and the end of the connecting pipe extends above the bottom of the cylinder and is fixedly connected with the aeration head, so that The upper surface of the aerator head is fixedly connected with the top pad, the top pad is evenly opened with a plurality of through holes, the inner middle part of the aeration head is fixedly installed with a grille, and the stopper is provided with a plurality of blocks whose lower end is connected to the top pad. The upper surface of the grid is fixedly connected;

The top pad is made of deformable flexible material.

Preferably, the lower end of the through hole is inclined to the outside, and the section radius of the upper end is smaller than the section radius of the lower end, and the upper end of the stopper is arranged in a hemispherical shape, and the upper end of the stopper can cooperate with the through hole.

Preferably, a mixing mechanism for stirring sewage is fixedly installed inside the cylinder.

Preferably, the mixing mechanism includes a fixed rod, a gear ring, a spur gear, a rotating shaft, an upper conveying screw and a lower conveying screw, one end of the fixed rod is fixedly connected to the drive shaft, and the other end is fixedly connected to the inside of the gear ring , the outside of the gear ring meshes with the spur gear, the inside of the spur gear is fixedly connected to the shaft, the lower end of the shaft is connected to the bottom of the cylinder in rotation, and the upper conveying screw is fixedly installed on the shaft Extending to the end above the spur gear, the lower conveying screw is fixedly installed on the end of the rotating shaft extending below the spur gear.

Preferably, the helical direction of the upper conveying screw is set upward, and the helical direction of the lower conveying screw is set downward.

Preferably, rounded corners are provided between the inner bottom of the cylinder and its side walls.

An air flotation purification device for industrial wastewater treatment proposed by the present invention has the beneficial effect that: during the purification process of the device, the drive shaft will drive the mounting frame to rotate through the limit block and the bar-shaped groove, and the rotation of the mounting frame can drive the scraper Rotate, the scraper rotates to clean the foam residue on the water surface, the foam residue entering the scraper will enter the conveying tank through the conveying pipe, and finally the foam residue will be sent out through the conveying groove, when the height of the water surface changes, the limit The block is displaced in the strip groove, so that the height of the mounting frame and the scraper can change with the change of the water surface, so that the scraper is always in contact with the water surface, scraping the residue on the water surface, and driving the drive shaft through an external power device Turning, the cleaning effect on the residue is good.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of a kind of industrial wastewater treatment air flotation purification device proposed by the present invention;

Fig. 2 is the sectional structure schematic diagram of a kind of industrial wastewater treatment air flotation purification device proposed by the present invention;

Fig. 3 is the sectional structure schematic diagram at A-A place in Fig. 2 of a kind of industrial wastewater treatment air flotation purification device proposed by the present invention;

Fig. 4 is the enlarged structure schematic diagram at B place in Fig. 2 of a kind of industrial wastewater treatment air flotation purification device proposed by the present invention;

Fig. 5 is the sectional structure schematic diagram of the C-C place in Fig. 4 of a kind of industrial wastewater treatment air flotation purification device proposed by the present invention;

Fig. 6 is an enlarged schematic diagram of the structure at D in Fig. 3 of an air flotation purification device for industrial wastewater treatment proposed by the present invention.

In the figure: cylinder 1, aeration mechanism 2, connecting pipe 21, aeration head 22, grille 23, top pad 24, stopper 25, through hole 26, drive shaft 3, scraper 4, cleaning mechanism 5, bar Shaped groove 51, limit block 52, mounting frame 53, floating block 54, communication groove 55, conveying pipe 56, conveying groove 57, protection mechanism 6, installation cavity 61, movable block 62, spring 63, baffle plate 64, mixing mechanism 7. Fixed rod 71, gear ring 72, spur gear 73, rotating shaft 74, upper delivery screw 75, lower delivery screw 76, fillet 8.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

Example 1

Referring to Figures 1-6, an air flotation purification device for industrial wastewater treatment includes:

Cylinder 1 and scraper 4, the inside of cylinder 1 is rotated with a drive shaft 3, the drive shaft 3 is connected with external power equipment, and the drive shaft 3 and scraper 4 are connected by a cleaning mechanism 5 for cleaning waste residues. The bottom of cylinder body 1 is also fixedly installed with aeration mechanism 2 for aeration. Aeration mechanism 2 is used to aerate the sewage in cylinder body 1, and absorb the oil in sewage through fine air bubbles, and the air bubbles rise If it breaks, the residue will float on the water surface, which is easy to clean through the cleaning mechanism 5. There is a rounded corner 8 between the bottom of the inner side of the cylinder 1 and the side wall. Since the aeration mechanism 2 is installed at the bottom of the cylinder 1, it moves during the aeration process. The air bubbles will move and diffuse outward. When the air bubbles move to the place between the bottom of the cylinder 1 and the side wall, the bubbles will hit the side wall at the bottom of the cylinder 1, and the force of the bubbles traveling in the sewage will gradually In this way, the force of the bubble movement will become smaller during the impact process, and the travel distance of the bubbles will become smaller, and the aeration effect will be worse. By setting the rounded corner 8, the contact between the bubbles and the cylinder 1 can be reduced. The impact force between the side walls at the bottom can make the air bubbles bounce upward after contacting the fillet 8, increasing the travel distance of the air bubbles and improving the aeration effect.

The cleaning mechanism 5 comprises a limit block 52, a mounting frame 53, a floating block 54 and a conveying pipe 56. Both sides of the drive shaft 3 are provided with strip grooves 51, and the mounting frame 53 is sleeved on the outside of the drive shaft 3 up and down. The limit block One end of 52 is fixedly connected with the inner surface of mounting frame 53 , and the other end is slidably arranged in the bar-shaped groove 51 , and the mounting frame 53 can move up and down in the bar-shaped groove 51 through the limit block 52 .

The surface of the drive shaft 3 is provided with a communication groove 55, and the inside of the drive shaft 3 is provided with a delivery groove 57. Fixedly connected, the other end runs through the communication groove 55 and extends into the conveying groove 57. A floating block 54 is fixedly installed on the outside of the mounting frame 53. The floating block 54 is made of foam structure. The floating block 54 will float on the surface of the sewage, so the mounting frame 53 will also drive the scraper 4 to float on the sewage surface, and then scrape the residue and foam on the sewage surface through the scraper 4, and the foam residue scraped by the scraper 4 will flow into the delivery tank 57 through the delivery pipe 56 , since the lower end of the drive shaft 3 runs through and extends below the cylinder body 1 , the foam residue can be sent downward through the delivery groove 57 .

Under the buoyancy of the floating block 54, the mounting frame 53 and the scraper 4 will always float on the water surface. The height of the plate 4 can be changed with the change of the water surface, so that the scraper 4 is always in contact with the water surface to scrape off the residue on the water surface, and the drive shaft 3 is driven to rotate by an external power device, and the drive shaft 3 will pass through the limit block 52 And the strip groove 51 drives the mounting bracket 53 to rotate, and the rotation of the mounting bracket 53 can drive the scraper 4 to rotate. The rotation of the scraper 4 cleans the foam residue on the water surface, and the foam residue entering the scraper 4 will enter the conveying pipe 56. In the tank 57, the final foam residue will be sent out through the delivery tank 57.

Example 2

In the first embodiment above, in order to ensure that the conveying pipe 56 can move up and down with the scraper 4, the height of the communication groove 55 will be larger than the diameter of the conveying pipe 56. Under the action of the buoyancy of the block 54, the position of the scraper 4 and the mounting bracket 53 rises, and the height below the communication tank 55 will be lower than the height of the liquid surface, which will allow the sewage to overflow through the communication tank 55. In order to avoid this situation, this implementation For example, with reference to Figures 1-6, as another preferred embodiment of the present invention, on the basis of Embodiment 1, a protective mechanism 6 for waterproofing is fixedly installed below the communication groove 55, and the protective mechanism 6 includes a movable block 62, a spring 63 And the baffle plate 64, the drive shaft 3 inside and below the communication groove 55 is provided with an installation chamber 61, the movable block 62 slides up and down inside the installation chamber 61, the lower end of the spring 63 is fixedly connected with the upper surface of the movable block 62, and the upper end is connected with the installation chamber 61 The bottom is fixedly connected, the lower end of the baffle plate 64 is fixedly connected with the middle part of the upper surface of the movable block 62 , and the upper end penetrates and extends into the communication groove 55 , and the end of the delivery pipe 56 located inside the communication groove 55 runs through the upper end of the baffle plate 64 .

When the scraper 4 moves upward with the liquid surface, the conveying pipe 56 will also move and move upward with the baffle 64. The baffle 64 will block the sewage and prevent the sewage from overflowing through the communication groove 55. Block 62 will have an upward elastic force under the elastic support of spring 63, so baffle plate 64 will be subject to upward elastic force all the time, and this elastic force plays a supporting role, so that delivery pipe 56 can easily move upward with baffle plate 64, and The elastic force is small, and when the liquid level drops, the scraper 4 will move downward with the conveying pipe 56 , and the conveying pipe 56 will also move downward with the baffle plate 64 at this time, and will not be affected by the spring 63 .

Example 3

Referring to Figures 2-3 and Figure 6, as another preferred embodiment of the present invention, on the basis of Embodiment 1, the aeration mechanism 2 includes a connecting pipe 21, an aeration head 22, a grille 23, a top pad 24 and a baffle block 25, the end of the connecting pipe 21 extends above the bottom of the cylinder body 1 and is fixedly connected with the aeration head 22, the upper surface of the aeration head 22 is fixedly connected with the top pad 24, the top pad 24 is made of a deformable flexible material, and the top pad 24 is evenly provided with a plurality of through holes 26, the middle part of the inner side of the aerator head 22 is fixedly equipped with a grille 23, a plurality of stoppers 25 are provided, and its lower end is fixedly connected with the upper surface of the grille 23, and the lower end of the through hole 26 is inclined to the outside. , the section radius of the upper end is smaller than the section radius of the lower end, the upper end of the stopper 25 is arranged in a hemispherical shape, and the upper end of the stopper 25 can cooperate with the through hole 26.

The end of the connecting pipe 21 is connected to the aeration equipment, and then the air bubbles are transported from the connecting pipe 21 to the aeration head 22, and then touch the top pad 24 through the grille 23, the top pad 24 is pushed up by pressure, and the top pad 24 is lifted up Finally, the through hole 26 moves upwards and separates from the top of the stopper 25, and the air bubbles will be blown out upwards. When the aeration device stops working, the top pad 24 will fall downward without force, and then the through hole 26 will be in contact with the stopper 25. The top is re-attached, so that the sludge in the sewage can be prevented from entering the aeration head 22, and the inside of the aeration head 22 can be prevented from being blocked.

Example 4

Referring to Figures 1-3, as another preferred embodiment of the present invention, on the basis of Embodiment 1, a mixing mechanism 7 for stirring sewage is fixedly installed inside the cylinder body 1, and the mixing mechanism 7 includes a fixed rod 71, a gear ring 72 , a spur gear 73, a rotating shaft 74, an upper conveying screw 75 and a lower conveying screw 76, one end of the fixed rod 71 is fixedly connected with the drive shaft 3, the other end is fixedly connected with the inside of the gear ring 72, and the outside of the gear ring 72 is meshed with the spur gear 73, The inside of the spur gear 73 is fixedly connected with the rotating shaft 74, and the lower end of the rotating shaft 74 is connected to the bottom of the cylinder 1 in rotation. The upper conveying screw 75 is fixedly installed on the end of the rotating shaft 74 extending to the top of the spur gear 73, and the lower conveying screw 76 is fixedly installed on the rotating shaft 74 to extend To the end below the spur gear 73, the helical direction of the upper conveying screw 75 is set upward, and the helical direction of the lower conveying screw 76 is set downward. When the drive shaft 3 rotates, the fixed rod 71 will drive the gear ring 72 to rotate, and the gear ring 72 The rotation will drive the spur gear 73 to rotate, and the rotation of the spur gear 73 will drive the rotating shaft 74 to rotate. The rotation of the rotating shaft 74 will drive the upper conveying screw 75 and the lower conveying screw 76 to rotate. When the upper conveying screw 75 rotates, the sewage on the top will be conveyed downward. When the lower conveying screw 76 rotates, the sewage below will be conveyed upwards.

During the working process of the device, the air bubbles will move from bottom to top, and a large number of air bubbles will first appear at the bottom of the cylinder 1, while the bubbles will be lost during the upward movement, and the bubbles that actually move to the top of the cylinder 1 are less than The air bubbles at the bottom of cylinder body 1, so the effect of aeration of the sewage above cylinder body 1 is poor. The air bubbles in cylinder body 1 can be evenly mixed by the upper conveying screw 75 and the lower conveying screw 76, and a large number of air bubbles in the bottom can be removed. The sewage is transported upwards, and the sewage with less air bubbles is transported downwards to improve the efficiency of aeration.

working principle:

The end of the connecting pipe 21 is connected to the aeration equipment, and the aeration equipment performs the aeration work, the air bubbles are transported from the connecting pipe 21 to the aeration head 22, the top pad 24 is pushed up after receiving pressure, and the through hole 26 moves upward to meet the stopper 25 The top is separated, and the bubbles will be blown upwards. When the aeration equipment stops working, the top pad 24 will fall down without force, and then the through hole 26 will be re-attached to the top of the stopper 25, which can prevent the sewage in the sewage. Sludge enters into the aeration head 22, which can prevent the inside of the aeration head 22 from clogging. The oil in the sewage will be adsorbed on the surface of the air bubbles, and then float to the surface of the sewage. There will be a lot of air bubbles and residues of bubble rupture on the surface of the sewage;

Control the rotation of the drive shaft 3, the rotation of the drive shaft 3 will drive the installation frame 53 to rotate through the limit block 52 and the bar groove 51, the rotation of the installation frame 53 can drive the rotation of the scraper 4, and the rotation of the scraper 4 will clean up the foam residue on the water surface , the foam residue entering the scraper 4 will enter the delivery tank 57 through the delivery pipe 56, and finally the foam residue will be sent out through the delivery tank 57;

As the foam and residue will be continuously discharged, the liquid level of the sewage will change. When the liquid level rises or falls, the floating block 54 will take the scraper 4 up or down, and the scraper 4 will drive the baffle through the delivery pipe 56. The plate 64 rises or falls, and when the baffle plate 64 moves upwards, it can prevent sewage from overflowing from the communication groove 55;

When the drive shaft 3 rotates, the fixed rod 71 will drive the gear ring 72 to rotate. The rotation of the gear ring 72 will drive the spur gear 73 to rotate. The rotation of the spur gear 73 will drive the rotating shaft 74 to rotate. The conveying screw 76 rotates. When the upper conveying screw 75 rotates, the sewage above will be conveyed downward. When the lower conveying screw 76 rotates, the sewage below will be conveyed upward. The air bubbles in the cylinder body 1 can be evenly mixed to improve exposure gas efficiency.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Any equivalent replacement or change of the inventive concepts thereof shall fall within the protection scope of the present invention.

Claims (10)

1. An air floatation method purifier for industrial wastewater treatment is characterized by comprising the following steps:

the waste slag treatment device comprises a barrel (1) and a scraper (4), wherein a driving shaft (3) is rotatably arranged in the barrel (1), the driving shaft (3) is connected with the scraper (4) through a cleaning mechanism (5) for cleaning waste slag, and an aeration mechanism (2) for aeration is fixedly arranged at the bottom of the barrel (1);

clearance mechanism (5) include stopper (52), mounting bracket (53), float piece (54) and conveyer pipe (56), strip-shaped groove (51) have all been seted up to drive shaft (3) both sides, movable sleeve locates about mounting bracket (53) drive shaft (3) outside, stopper (52) one end with mounting bracket (53) inboard fixed surface link to each other, the other end slide set up in strip-shaped groove (51), intercommunication groove (55) have been seted up on drive shaft (3) surface, inside conveyer trough (57) have been seted up in drive shaft (3), conveyer trough (57) with intercommunication groove (55) are linked together, conveyer pipe (56) slide from top to bottom set up in intercommunication groove (55), conveyer pipe (56) one end with scraper blade (4) are fixed to link to each other, the other end runs through intercommunication groove (55) extend to in conveyer trough (57), mounting bracket (53) outside fixed mounting has float piece (54).

2. The air flotation purification apparatus for industrial wastewater treatment as set forth in claim 1, wherein the flotation block (54) is made of a foam structure.

3. The air flotation method purification device for industrial wastewater treatment as set forth in claim 1, wherein a protection mechanism (6) for water prevention is fixedly installed below the communication groove (55).

4. The air flotation purification device for industrial wastewater treatment as claimed in claim 3, wherein the protection mechanism (6) comprises a movable block (62), a spring (63) and a baffle (64), the inside of the drive shaft (3) is located below the communication groove (55) and is provided with an installation cavity (61), the movable block (62) is arranged inside the installation cavity (61) in a vertically sliding manner, the lower end of the spring (63) is fixedly connected with the upper surface of the movable block (62), the upper end of the spring is fixedly connected with the bottom of the installation cavity (61), the lower end of the baffle (64) is fixedly connected with the middle part of the upper surface of the movable block (62), the upper end of the baffle penetrates through the communication groove (55), and the end part of the conveying pipe (56) located inside the communication groove (55) penetrates through the upper end part of the baffle (64).

5. The air flotation purification device for industrial wastewater treatment as claimed in claim 1, wherein the aeration mechanism (2) comprises a connecting pipe (21), an aeration head (22), a grid (23), a top pad (24) and a plurality of blocks (25), the end of the connecting pipe (21) extends to the upper part of the bottom of the cylinder body (1) and is fixedly connected with the aeration head (22), the upper surface of the aeration head (22) is fixedly connected with the top pad (24), the top pad (24) is uniformly provided with a plurality of through holes (26), the middle part of the inner side of the aeration head (22) is fixedly provided with the grid (23), the plurality of blocks (25) are provided, and the lower ends of the blocks are fixedly connected with the upper surface of the grid (23);

the top pad (24) is made of a deformable flexible material.

6. The air flotation purification apparatus for industrial wastewater treatment as set forth in claim 5, wherein the lower end of the through hole (26) is inclined to the outside, the upper end has a smaller cross-sectional radius than the lower end, the upper end of the stopper (25) is formed in a hemispherical shape, and the upper end of the stopper (25) is fitted into the through hole (26).

7. The air flotation method purification device for industrial wastewater treatment as claimed in claim 1, wherein a mixing mechanism (7) for stirring the wastewater is fixedly installed inside the cylinder (1).

8. The air flotation purification device for industrial wastewater treatment as claimed in claim 7, wherein the mixing mechanism (7) comprises a fixing rod (71), a gear ring (72), a spur gear (73), a rotating shaft (74), an upper conveying screw (75) and a lower conveying screw (76), one end of the fixing rod (71) is fixedly connected with the driving shaft (3), the other end of the fixing rod is fixedly connected with the inside of the gear ring (72), the outside of the gear ring (72) is engaged with the spur gear (73), the inside of the spur gear (73) is fixedly connected with the rotating shaft (74), the lower end of the rotating shaft (74) is rotatably connected with the bottom of the cylinder (1), the upper conveying screw (75) is fixedly mounted at the end of the rotating shaft (74) extending to the upper side of the spur gear (73), and the lower conveying screw (76) is fixedly mounted at the end of the rotating shaft (74) extending to the lower side of the spur gear (73).

9. The air flotation purification apparatus for industrial wastewater treatment as recited in claim 8, wherein the spiral direction of the upper conveying screw (75) is set upward, and the spiral direction of the lower conveying screw (76) is set downward.

10. The air flotation method purification device for industrial wastewater treatment as claimed in claim 1, wherein a round corner (8) is provided between the bottom of the inner side of the cylinder (1) and the side wall thereof.

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