A liquid flotation device for dust removal spray tower

Abstract

The present invention discloses a liquid flotation device for a dust removal spray tower, and relates to the technical field of flue gas treatment. The present invention includes a spray tower and a support frame, wherein there are three support frames, which are evenly fixedly installed at the bottom of the spray tower and are used for the stable suspension placement of the spray tower. A flotation bucket is fixedly installed at the bottom of the interior of the spray tower, a smoke inlet is fixedly installed at the front side of the middle of the spray tower, a smoke outlet is fixedly installed at the top of the spray tower, and a circulation component is arranged between the outer side of the bottom and the inner side of the top of the spray tower. The present invention can collect and clean impurities in the liquid by the action of centripetal force, and regularly suck and discharge them, thereby abandoning the use of traditional filter screens, not requiring regular cleaning and replacement, and not affecting the flow of the liquid. The operation is also more convenient and quick, and the cleaning of light impurities and oil stains at the liquid surface is achieved, the effect of impurity cleaning is improved, and the recycling of the liquid is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of flue gas treatment, and in particular to a liquid flotation device for a dust removal spray tower. Background Art

[0002] In flue gas treatment equipment, dust removal spray towers are now mostly used to treat fine dust and acid mist waste gas in the flue gas. The treatment liquid is sprayed out in a mist form, and the dust removal effect is achieved through the contact between the mist liquid and the flue gas. The treatment liquid needs to be recycled during use. Therefore, after the spraying is completed, the treatment liquid needs to be floated and impurities removed so that it can be reused.

[0003] However, the liquid flotation device of the existing dust removal spray tower still has the following defects during use:

[0004] 1. Existing flotation devices use filters to remove impurities during the impurity removal process to meet the requirements of recycling. However, during use, impurities will accumulate on the filter and cause blockage, affecting the circulation of the treated liquid. At the same time, the filter needs to be cleaned or replaced regularly and the impurities need to be collected, which is time-consuming and laborious.

[0005] 2. During the impurity treatment process, some light impurities and oil stains will float on the surface of the treated liquid, which is difficult to clean with traditional equipment, reducing the cleaning effect of the impurities and affecting subsequent recycling. Summary of the invention

[0006] The purpose of the present invention is to solve the problems that during the use of the above-mentioned traditional impurity removal device, impurities will accumulate on the filter screen and cause blockage, affecting the circulation flow of the treated liquid, and the removal and collection of impurities are time-consuming and labor-intensive, and it is difficult to clean some light impurities and oil stains floating on the surface of the treated liquid, which reduces the cleaning effect. The present invention provides a liquid flotation device for a dust removal spray tower.

[0007] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0008] A liquid flotation device for a dust removal spray tower, comprising a spray tower and a support frame, wherein the support frames are three in number and are evenly and fixedly mounted at the bottom of the spray tower for stably suspending the spray tower, a flotation bucket is fixedly mounted at the bottom of the spray tower, a smoke inlet is fixedly mounted at the front side of the middle of the spray tower, and a smoke outlet is fixedly mounted at the top of the spray tower;

[0009] A circulation component is arranged between the outer side of the bottom and the inner side of the top of the spray tower, and the circulation component is used for recycling the spray liquid. An impurity removal component is arranged inside the flotation barrel, and the impurity removal component is used for removing impurities in the liquid after spraying for easy recycling.

[0010] Furthermore, the connection point between the inner side of the smoke inlet and the inside of the spray tower is located above the top port of the flotation barrel, so that the smoke can normally enter the spray tower from the smoke inlet and flow upward.

[0011] Furthermore, the circulation component includes a suction pipe, and the suction pipe is fixedly installed on the left and right sides of the bottom of the spray tower, and the bottom of the suction pipe extends inwardly to the inner edge of the bottom of the flotation barrel to suck the liquid outside the bottom of the flotation barrel. A circulation pump is fixedly installed on the top of the suction pipe, and a circulation pipe is fixedly installed on the top of the circulation pump. A spray pipe is fixedly installed on the top of the inside of the spray tower, and the top of the circulation pipe extends inwardly to the inside of the spray tower, and is fixedly installed on the left and right sides of the spray pipe and is connected with the inside of the spray pipe. Nozzles are evenly fixedly installed on the inside of the spray pipe, and a vortex tube is fixedly installed between the rear sides of the circulation pump on the left and right sides. The middle part of the vortex tube extends forward to the inside of the flotation barrel, and a nozzle is fixedly installed at one end of the front side.

[0012] Furthermore, the water inlet and outlet directions of the circulation pump are water inlet from the bottom suction pipe and sprayed out from the circulation pipe and the cyclone pipe. Therefore, under the action of the circulation pump, the liquid on the periphery of the bottom of the flotation barrel can be sucked through the suction pipe and then sprayed out through the circulation pipe and the cyclone pipe.

[0013] Furthermore, the nozzle has three vertically distributed outlets, and the nozzle is located at the edge of the flotation barrel. The outlet of the nozzle is oriented toward the tangent direction of the inner circumference of the flotation barrel. Therefore, when the liquid is sprayed from the nozzle into the flotation barrel, the liquid inside the flotation barrel can swirl under the action of the liquid thrust.

[0014] Furthermore, the impurity removal component includes a central tube, which is fixedly installed in the middle of the flotation barrel, the bottom of the central tube is in a downwardly unfolded trumpet shape, and the outer periphery is evenly provided with lower inlets, so that impurities moving downward with gravity can enter the central tube through the lower inlet, the outer periphery of the central tube is evenly provided with outer inlets, and the width of the outer inlet gradually decreases from the outside to the inside, so that impurities inside the flotation barrel can better enter the central tube through the outer inlet, the outer side of the central tube is connected to a slide seat through the outer inlet limit sliding, the bottom of the outer periphery of the slide seat is connected to a lower swivel, and the outer periphery of the lower swivel is evenly fixed with floating blades, A lower gear ring is fixedly installed on the top of the lower rotating ring, and an upper rotating ring is rotatably connected to the top limit of the outer periphery of the sliding seat. Collecting blades are evenly fixedly installed on the outer periphery of the upper rotating ring. The collecting blades are designed to be arc-shaped and inclined, and the inclination direction is consistent, so that the collecting blades can concentrate the impurities floating on the liquid surface to the middle during the rotation. An upper gear ring is fixedly installed on the bottom end of the upper rotating ring, and a gear is rotatably connected to the outer periphery of the middle part of the sliding seat. The upper and lower sides of the gear are respectively meshed with the upper gear ring and the lower gear ring. Therefore, in the process of the lower rotating ring driving the lower gear ring to rotate, the upper gear ring and the upper rotating ring can be driven to rotate in opposite directions through the meshing action of the gears.

[0015] Furthermore, a sunken arc groove is opened in the center of the top of the slide, the collecting blade is located above the top port of the slide, and the inner end of the collecting blade extends to the inner side of the arc groove at the top of the slide, so that during the rotation of the collecting blade, impurities moving inward can gather in the arc groove at the top of the slide.

[0016] Furthermore, through the buoyancy of the floating blades and the collecting blades, and in combination with the weight of the floating blades, the collecting blades and the slide, the collecting blades can always be located at the liquid surface of the liquid inside the flotation tank, so that the collecting blades can act on impurities at the liquid surface.

[0017] Furthermore, a sewage outlet is fixedly connected to the center of the bottom end of the flotation barrel, the sewage outlet is aligned with and connected to the central tube, the sewage outlet extends downward to the lower side of the spray tower, and a suction pump is fixedly installed on the periphery of the sewage outlet in the area between the bottom end of the flotation barrel and the bottom end of the spray tower, and the impurities collected in the central tube are extracted and collected by the timed suction of the suction pump.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The present invention, through the coordinated design of the circulation component and the impurity removal component, can make the liquid inside the flotation barrel swirl in the process of circulating and extracting the liquid after the spraying treatment, and then under the action of the centripetal force, the impurities in the liquid are concentrated to the middle, and then the impurities are regularly extracted and removed by the coordination of the impurity removal component and the suction pump. At the same time, the use of the traditional filter screen is abandoned, and there is no need for regular cleaning and replacement, which does not affect the flow of the liquid and is more convenient and quick to operate.

[0020] 2. The present invention, through the design of the impurity removal component, cooperates with the circulation component to drive the vortex of the liquid in the flotation barrel, under the action of rotating the collecting blades in the opposite direction to the liquid vortex, cooperates with the arc-shaped tilted design of the collecting blades, so that the light impurities and oil stains floating on the liquid surface are concentrated and moved to the middle, and then extracted and cleaned, thereby achieving the cleaning of light impurities and oil stains on the liquid surface, improving the effect of impurity cleaning, and ensuring the recycling of liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ;

[0022] Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ;

[0023] Figure 3 It is a schematic diagram of a partially cutaway three-dimensional structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the internal three-dimensional structure of the spray tower of the present invention;

[0025] Figure 5 It is a schematic diagram of a partial cross-sectional three-dimensional structure of the interior of the spray tower of the present invention;

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the impurity removal component of the present invention;

[0027] Figure 7 This is an exploded view of the three-dimensional structure of the impurity removal component of the present invention;

[0028] Figure 8 It is an exploded view of the local three-dimensional structure of the impurity removal component of the present invention;

[0029] Fig. 9 It is a schematic diagram of the cross-sectional three-dimensional structure of the slide seat of the present invention.

[0030] Figure numerals: 1. spray tower; 2. support frame; 3. flotation barrel; 4. smoke inlet; 5. smoke outlet; 6. circulation component; 61. suction pipe; 62. circulation pump; 63. circulation pipe; 64. spray pipe; 65. nozzle; 66. swirl pipe; 67. nozzle; 7. impurity removal component; 71. central tube; 711. lower inlet; 712. outer inlet; 72. slide seat; 73. lower swivel; 74. floating blade; 75. lower gear ring; 76. upper swivel; 77. collecting blade; 78. upper gear ring; 79. gear; 8. sewage outlet; 81. suction pump. DETAILED DESCRIPTION

[0031] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0032] A liquid flotation device for a dust removal spray tower according to a preferred embodiment of the present invention will be described in detail below. Figure 1-5 As shown, a liquid flotation device for a dust removal spray tower includes a spray tower 1 and a support frame 2. There are three support frames 2, which are evenly and fixedly installed at the bottom end of the spray tower 1 and are used for stably suspending the spray tower 1. A flotation bucket 3 is fixedly installed at the bottom of the spray tower 1, a smoke inlet 4 is fixedly installed on the front side of the middle part of the spray tower 1, and a smoke outlet 5 is fixedly installed at the top of the spray tower 1.

[0033] The connection point between the inner side of the smoke inlet 4 and the inside of the spray tower 1 is located above the top port of the flotation barrel 3, so that the smoke can normally enter the spray tower 1 from the smoke inlet 4 and flow upward.

[0034] A circulation component 6 is arranged between the outer side of the bottom and the inner side of the top of the spray tower 1, and the circulation component 6 is used for recycling the spray liquid. An impurity removal component 7 is arranged inside the flotation barrel 3, and the impurity removal component 7 is used to remove impurities in the liquid after spraying for easy recycling.

[0035] A sewage outlet 8 is fixedly connected to the center of the bottom end of the flotation barrel 3, and the sewage outlet 8 is aligned with and connected to the central tube 71. The sewage outlet 8 extends downward to the lower side of the spray tower 1, and a suction pump 81 is fixedly installed on the periphery of the sewage outlet 8 in the area between the bottom end of the flotation barrel 3 and the bottom end of the spray tower 1. The impurities collected in the central tube 71 are extracted and collected by the timed suction of the suction pump 81.

[0036] During use, the flue gas enters the spray tower 1 through the smoke inlet 4, and after being sprayed in the spray tower 1, the treated flue gas is discharged through the smoke outlet 5 to enter the next treatment step, and the liquid after the spraying treatment will flow downward into the flotation barrel 3 for collection, and the impurities will be treated by the impurity removal component 7 in the flotation barrel 3. The liquid after impurity removal will be circulated and extracted for utilization through the circulation component 6.

[0037] During the treatment process, the impurities collected in the impurity removal component 7 can be extracted and collected through the timed suction of the suction pump 81 to discharge the impurities.

[0038] Furthermore, if Figure 3-5 As shown, the circulation component 6 includes a suction pipe 61, and the suction pipe 61 is fixedly installed on the left and right sides of the bottom of the spray tower 1. The bottom of the suction pipe 61 extends inwardly to the inner edge of the bottom of the flotation barrel 3 to suck the liquid outside the bottom of the flotation barrel 3. A circulation pump 62 is fixedly installed on the top of the suction pipe 61, and a circulation pipe 63 is fixedly installed on the top of the circulation pump 62. A spray pipe 64 is fixedly installed on the top of the inside of the spray tower 1. The top of the circulation pipe 63 extends inwardly to the inside of the spray tower 1, and is fixedly installed on the left and right sides of the spray pipe 64, and is connected with the inside of the spray pipe 64. Nozzles 65 are evenly fixedly installed on the inside of the spray pipe 64, and a vortex pipe 66 is fixedly installed between the rear sides of the circulation pumps 62 on the left and right sides. The middle part of the vortex pipe 66 extends forward to the inside of the flotation barrel 3, and a nozzle 67 is fixedly installed at one end of the front side.

[0039] The water inlet and outlet directions of the circulation pump 62 are water inlet from the bottom suction pipe 61 and ejected from the circulation pipe 63 and the cyclone pipe 66. Therefore, under the action of the circulation pump 62, the liquid on the periphery of the bottom of the flotation barrel 3 can be sucked through the suction pipe 61 and then ejected through the circulation pipe 63 and the cyclone pipe 66.

[0040] The nozzle 67 has three vertically distributed outlets, and the nozzle 67 is located at the edge of the flotation barrel 3. The outlet of the nozzle 67 is oriented toward the tangent direction of the inner circumference of the flotation barrel 3. Therefore, when the liquid is sprayed from the nozzle 67 into the flotation barrel 3, the liquid inside the flotation barrel 3 can swirl under the action of the liquid thrust.

[0041] In the recycling process of the spraying liquid, the circulation pump 62 is used to extract the liquid from the outer bottom of the flotation barrel 3 through the suction pipe 61, and then flows upward through the circulation pipe 63, and finally sprayed out from the nozzle 65 inside the spray pipe 64 to realize the spraying of the liquid and treat the flue gas flowing upward inside the spray tower 1.

[0042] At the same time, the extracted liquid can also pass through the cyclone tube 66 and be sprayed into the flotation barrel 3 by the nozzle 67. With the design that the outlet of the nozzle 67 is oriented in the direction of the inner circumferential tangent of the flotation barrel 3, the liquid in the flotation barrel 3 can be rotated under the action of the thrust of the sprayed liquid. Therefore, the impurities in the liquid can be concentrated and moved to the center of the flotation barrel 3 under the action of the centripetal force, so that the liquid on the periphery of the bottom of the flotation barrel 3 extracted by the suction tube 61 is the impurity-free liquid, so as to meet the recycling of the liquid.

[0043] Furthermore, if Figure 3 , 5 As shown in FIG. 9 , the impurity removal component 7 includes a central cylinder 71, and the central cylinder 71 is fixedly installed in the middle of the flotation barrel 3. The bottom of the central cylinder 71 is in a downwardly unfolded trumpet shape, and the outer periphery is uniformly provided with a lower inlet 711, so that the impurities moving downward with gravity can enter the central cylinder 71 through the lower inlet 711. The outer periphery of the central cylinder 71 is uniformly provided with an outer inlet 712, and the width of the outer inlet 712 gradually decreases from the outside to the inside, so that the impurities inside the flotation barrel 3 can better enter the central cylinder 71 through the outer inlet 712. The outer side of the central cylinder 71 is limitedly slidably connected with a slide seat 72 through the outer inlet 712, and the bottom of the outer periphery of the slide seat 72 is limitedly rotatably connected with a lower swivel 73, and the outer periphery of the lower swivel 73 is uniformly fixedly provided with floating blades 74. The top of the lower rotating ring 73 is fixedly installed with a lower gear ring 75, and the top of the outer periphery of the slide 72 is rotatably connected with an upper rotating ring 76. The outer periphery of the upper rotating ring 76 is evenly and fixedly installed with collecting blades 77. The collecting blades 77 are designed to be arc-shaped and inclined, and the inclination direction is consistent, so that during the rotation of the collecting blades 77, the impurities floating on the liquid surface can be concentrated and moved toward the middle. The bottom end of the upper rotating ring 76 is fixedly installed with an upper gear ring 78, and the outer periphery of the middle part of the slide 72 is rotatably connected with a gear 79. The upper and lower sides of the gear 79 are respectively meshed with the upper gear ring 78 and the lower gear ring 75. Therefore, when the lower rotating ring 73 drives the lower gear ring 75 to rotate, the meshing action of the gear 79 can drive the upper gear ring 78 and the upper rotating ring 76 to rotate in opposite directions.

[0044] A sunken arc groove is opened in the center of the top of the slide 72, and the collecting blade 77 is located above the top port of the slide 72, and the inner end of the collecting blade 77 extends to the inner side of the arc groove at the top of the slide 72, so that during the rotation of the collecting blade 77, impurities moving inward can gather in the arc groove at the top of the slide 72.

[0045] Through the buoyancy of the floating blade 74 and the collecting blade 77, and the weight of the floating blade 74, the collecting blade 77 and the slide 72, the collecting blade 77 can always be located at the liquid surface of the liquid inside the flotation barrel 3, so that the collecting blade 77 can act on the impurities at the liquid surface.

[0046] Under the action of the cyclone of the liquid in the flotation barrel 3 , the impurities are concentrated and moved toward the center of the flotation barrel 3 . The impurities can enter the central tube 71 through the outer inlet 712 , and the impurities deposited downward can also enter the central tube 71 through the lower inlet 711 .

[0047] Under the action of the rotating flow of the liquid, the floating blades 74 can also be driven to rotate in the same direction, thereby driving the lower rotating ring 73 and the lower gear ring 75 to rotate. Under the action of the meshing of the gear 79, the upper gear ring 78 and the upper rotating ring 76 can be driven to rotate in the opposite direction.

[0048] By utilizing the buoyancy of the floating blades 74 and the collecting blades 77, in combination with the weight of the floating blades 74, the collecting blades 77 and the slide 72, and the limited sliding connection of the slide 72 on the periphery of the central tube 71, the collecting blades 77 can always be located at the liquid surface of the liquid inside the flotation barrel 3. Therefore, during the rotation of the collecting blades 77 in the opposite direction to the rotation of the liquid, in combination with the arc-shaped inclined design of the collecting blades 77, the light impurities and oil stains floating on the liquid surface inside the flotation barrel 3 can be concentrated and moved to the middle, and gathered in the arc groove on the top of the slide 72.

[0049] Then, through the timed suction of the suction pump 81, the impurities concentrated in the central tube 71 and the impurities gathered in the arc groove on the top of the slide seat 72 can be sucked out and discharged from the sewage outlet 8 to complete the cleaning and collection of the impurities.

[0050] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A liquid flotation device for a dust removal spray tower, comprising a spray tower (1) and a support frame (2), characterized in that: There are three support frames (2) uniformly and fixedly mounted at the bottom of the spray tower (1) for stably placing the spray tower (1) in the air; a flotation bucket (3) is fixedly mounted at the bottom of the spray tower (1); a smoke inlet (4) is fixedly mounted at the front side of the middle of the spray tower (1); and a smoke outlet (5) is fixedly mounted at the top of the spray tower (1); A circulation component (6) is arranged between the outer side of the bottom and the inner side of the top of the spray tower (1), and the circulation component (6) is used for recycling the spray liquid. An impurity removal component (7) is arranged inside the flotation barrel (3), and the impurity removal component (7) is used for removing impurities in the liquid after spraying, so as to facilitate recycling. Wherein, the circulation component (6) comprises: A suction pipe (61), wherein the suction pipe (61) is fixedly installed on the left and right sides of the bottom of the spray tower (1), and the bottom of the suction pipe (61) extends inwardly to the inner edge of the bottom of the flotation barrel (3); A circulation pump (62), wherein the top end of the suction pipe (61) is fixedly mounted with a circulation pump (62); A circulation pipe (63), wherein the top end of the circulation pump (62) is fixedly mounted with the circulation pipe (63); A spray pipe (64), wherein the top of the spray tower (1) is fixedly mounted with the spray pipe (64), and the top of the circulation pipe (63) extends inwardly to the inside of the spray tower (1), is fixedly mounted on the left and right sides of the spray pipe (64), and is communicated with the inside of the spray pipe (64); A spray head (65), the spray head (65) is evenly and fixedly installed on the inner side of the spray pipe (64); A swirl tube (66) is fixedly installed between the rear sides of the circulation pump (62) on the left and right sides; A nozzle (67), wherein the middle portion of the cyclone tube (66) extends forward to the interior of the flotation tank (3), and a nozzle (67) is fixedly mounted on one end of the front side; The impurity removal component (7) comprises: A central tube (71), wherein the central tube (71) is fixedly installed in the middle of the flotation barrel (3), and outer inlets (712) are evenly opened on the periphery of the central tube (71), and the width of the outer inlet (712) gradually decreases from the outside to the inside; A sliding seat (72), the outer side of the central tube (71) is connected to the sliding seat (72) in a limited sliding manner through an outer inlet (712); A lower rotating ring (73), the bottom of the periphery of the sliding seat (72) is connected to the lower rotating ring (73) in a limited rotation manner; Floating blades (74), the outer periphery of the lower rotating ring (73) is evenly and fixedly mounted with floating blades (74); A lower gear ring (75), the top end of the lower rotating ring (73) is fixedly mounted with the lower gear ring (75); An upper rotating ring (76), the top of the outer periphery of the sliding seat (72) is connected to the upper rotating ring (76) in a limited rotation manner; Collecting blades (77), the outer periphery of the upper rotating ring (76) is evenly fixed with collecting blades (77), the collecting blades (77) are designed to be arc-shaped and inclined, and the inclination direction is consistent; An upper gear ring (78), the bottom end of the upper rotating ring (76) is fixedly mounted with the upper gear ring (78); A gear (79) is rotatably connected to the periphery of the middle portion of the slide seat (72), and the upper and lower sides of the gear (79) are respectively meshed with the upper gear ring (78) and the lower gear ring (75).

2. The liquid flotation device for a dust removal spray tower according to claim 1, characterized in that: The connection point between the inner side of the smoke inlet (4) and the interior of the spray tower (1) is located above the top port of the flotation barrel (3).

3. The liquid flotation device for a dust removal spray tower according to claim 1, characterized in that: The water inlet and outlet directions of the circulation pump (62) are water inlet from the bottom suction pipe (61) and water outlet from the circulation pipe (63) and the vortex pipe (66).

4. The liquid flotation device for a dust removal spray tower according to claim 1, characterized in that: The nozzle (67) has three vertically distributed branch outlets, and the nozzle (67) is located at the edge of the inside of the flotation barrel (3), and the outlet of the nozzle (67) faces the tangent direction of the inner circumference of the flotation barrel (3).

5. The liquid flotation device for a dust removal spray tower according to claim 1, characterized in that: The bottom of the central tube (71) is in a downwardly expanding trumpet shape, and lower inlets (711) are evenly opened on the periphery.

6. The liquid flotation device for a dust removal spray tower according to claim 1, characterized in that: A sunken arc groove is provided in the center of the top of the slide seat (72); the collecting blade (77) is located above the top port of the slide seat (72); and an inner end of the collecting blade (77) extends to the inner side of the arc groove at the top of the slide seat (72).

7. The liquid flotation device for a dust removal spray tower according to claim 1, characterized in that: Through the buoyancy of the floating blade (74) and the collecting blade (77), in combination with the weight of the floating blade (74), the collecting blade (77) and the sliding seat (72), the collecting blade (77) can always be located at the liquid surface of the liquid inside the flotation barrel (3).

8. The liquid flotation device for a dust removal spray tower according to any one of claims 1 to 7, characterized in that: A sewage outlet (8) is fixedly connected to the center of the bottom end of the flotation barrel (3), the sewage outlet (8) is aligned with and connected to the central cylinder (71), the sewage outlet (8) extends downward to the lower side of the spray tower (1), and a suction pump (81) is fixedly installed on the periphery of the sewage outlet (8) in the area between the bottom end of the flotation barrel (3) and the inner bottom end of the spray tower (1).

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