Air floatation device for wastewater treatment

Abstract

The utility model discloses an air floatation device for wastewater treatment, which comprises a box body, a slag scraping device, a first unloading device and a second unloading device are arranged on the box body, the first unloading device comprises a precipitation hopper, a support frame, a support plate and a telescopic oil cylinder, a through groove is arranged at the bottom of the box body, the precipitation hopper is arranged at the through groove, and the second unloading device is arranged at the bottom of the box body. According to the utility model, the precipitation hopper is arranged, so that part of impurities with higher density can be collected, and after clean water in the box body is discharged, the telescopic oil cylinder can be started to contract to drive the precipitation hopper to rotate around the rotating joint of the precipitation hopper and the box body, so that the impurities in the precipitation hopper can be conveniently cleared out.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, and more specifically, to an air flotation device for wastewater treatment. Background Art

[0002] When treating wastewater, flotation devices are often used to pre-treat the wastewater, and the wastewater after flotation treatment is then introduced into the next process for deep treatment. Most of the current flotation devices inject wastewater into a box, and inject flocculants into the box to facilitate the aggregation of impurities in the wastewater, and inject tiny bubbles into the box. The bubbles wrap around the impurities, reduce the overall density of the impurities, and make them float to the surface. The scum on the surface is then scraped off by a scraper device and collected in a collection device. However, in this device, some impurities with higher density will sink to the bottom and accumulate at the bottom of the box, which is not easy to remove. The scraper device is generally fixed on the top of the box. When cleaning the inside of the box, it is easy to interfere with or collide with the scraper device, making it difficult to thoroughly clean the inside of the box. In addition, a collection bucket for collecting scum is generally fixed on one side of the box. When the amount of impurities collected in the collection bucket is large, it is not easy to discharge it. Utility Model Content

[0003] 1. Technical issues to be solved

[0004] In view of the problems existing in the prior art, the utility model provides an air flotation device for wastewater treatment to solve the technical problems mentioned in the background technology.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flotation device for wastewater treatment, comprising a box body, on which a scraping device, a first unloading device and a second unloading device are provided, the first unloading device comprising a sedimentation bucket, a support frame, a support plate and a telescopic oil cylinder, a through groove is provided at the bottom of the box body, the sedimentation bucket is arranged at the through groove, and one side of the sedimentation bucket is rotatably connected to the box body, the support frame is arranged on the surface of the box body, both ends of the support plate are fixedly connected to the support frame, a first connecting seat is provided on the support plate, a second connecting seat is provided on the lower surface of the sedimentation bucket, the telescopic oil cylinder is rotatably arranged on the first connecting seat, and the telescopic end of the telescopic oil cylinder is rotatably connected to the second connecting seat, the scraping device comprises a first mounting seat, a second mounting seat, a first rotating rod, a second rotating rod, a transmission mechanism and a scraper, and a first connecting plate and a second connecting plate are respectively provided on both sides of the upper surface of the box body, the first mounting seat and the first connecting plate are detachably connected by bolts, and the second mounting seat and the second connecting plate are detachably connected by bolts.

[0007] The utility model is further configured such that the second unloading device includes a collecting bucket, a mounting frame, a driving motor and a fixing mechanism, the mounting frame and the box body are fixedly connected, connecting shafts are provided at both ends of the collecting bucket, and the connecting shafts are rotatably connected to the mounting frame, the driving motor is arranged on one side of the mounting frame, and its output shaft passes through the mounting frame and is connected to the connecting shaft, and the collecting bucket and the box body are connected through the fixing mechanism.

[0008] The utility model is further configured such that both ends of the first rotating rod and the second rotating rod are rotatably connected to the first connecting seat and the second connecting seat respectively, and the transmission mechanism includes a first sprocket, a second sprocket and a chain, the first sprocket and the second sprocket are fixedly mounted outside the first rotating rod and the second rotating rod respectively, and the chain is cooperatively connected to the first sprocket and the second sprocket.

[0009] The utility model is further configured as follows: the transmission mechanism is provided with two groups, and the first sprockets in the two groups of the transmission mechanisms are both sleeved outside the first rotating rod, and the second sprockets in the two groups of the transmission mechanisms are both sleeved outside the second rotating rod, and a plurality of scrapers are provided, and the two ends of the plurality of scrapers are respectively connected to the chains in the two groups of the transmission mechanisms.

[0010] The utility model is further configured such that the fixing mechanism includes a fixing rod, a limiting rod and a rotating plate, wherein the fixing rod and the limiting rod are respectively fixedly arranged outside the box body and the collecting bucket, one end of the rotating plate is rotatably sleeved outside the fixing rod, and the other end is provided with a limiting groove cooperating with the limiting rod.

[0011] The utility model is further configured that a first partition is provided in the box body, a second partition is provided between the first partition and the box body, a first through groove is provided between the bottom of the second partition and the bottom of the box body, and a second through groove is provided on the first partition.

[0012] The utility model is further configured that the upper surface of the box body is provided with a first cover plate and a second cover plate, the first cover plate is provided with a stirring assembly, and a water inlet pipe is penetrated through the second cover plate.

[0013] The utility model is further configured that a dissolved air water tank is provided on one side of the box body, a water supply pump is provided at one end of the dissolved air water tank, a water supply pipe is provided at one end of the water supply pump away from the dissolved air water tank, and the water supply pipe is connected to the water inlet pipe.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides an air flotation device for wastewater treatment, which has the following beneficial effects:

[0016] 1. The utility model is provided with a sedimentation bucket, which can collect some impurities with higher density. When the clean water in the box body is discharged, the telescopic oil cylinder can be started to contract and drive the sedimentation bucket to rotate around the rotating connection between the sedimentation bucket and the box body, so as to facilitate the removal of impurities in the sedimentation bucket.

[0017] 2. The utility model is provided with a second unloading device, which can collect the scum through the collecting bucket, and after collecting a certain amount, start the driving motor to drive the collecting bucket to rotate, and pour out the scum in the collecting bucket. In addition, the collecting bucket can be limited and fixed by the cooperation of the rotating plate and the limiting rod to prevent the collecting bucket from falling off by itself after the driving motor is powered off and is not in a self-locking state.

[0018] 3. The utility model is provided with a scraping device, which can scrape off the floating scum on the water surface and make it fall into the collection bucket, and the scraping device can be disassembled to facilitate thorough cleaning of the box body to avoid interference or collision. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of an air flotation device for wastewater treatment in the utility model;

[0020] Figure 2 For the utility model Figure 1 A schematic diagram of the structure from another angle;

[0021] Figure 3 It is a structural schematic diagram of the box body and the second unloading device in the utility model;

[0022] Figure 4 It is a structural schematic diagram of the box body in the utility model;

[0023] Figure 5 It is a structural schematic diagram of the slag scraping device in the utility model.

[0024] In the figure: 1, box body; 2, sedimentation bucket; 3, support frame; 4, support plate; 5, telescopic cylinder; 6, through groove; 7, first connecting seat; 8, second connecting seat; 9, first mounting seat; 10, second mounting seat; 11, first rotating rod; 12, second rotating rod; 13, scraper; 14, first connecting plate; 15, second connecting plate; 16, collecting bucket; 17, mounting frame; 18, driving motor; 19, connecting shaft; 20, first sprocket; 21, second sprocket; 22, chain; 23, fixing rod; 24, limiting rod; 25, rotating plate; 26, limiting groove; 27, first partition; 28, second partition; 29, first through groove; 30, second through groove; 31, first cover plate; 32, second cover plate; 33, stirring assembly; 34, water inlet pipe; 35, dissolved air water tank; 36, water supply pump; 37, water supply pipe. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0027] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0028] See also Figure 1-5A flotation device for wastewater treatment includes a box body 1, on which a scraping device, a first unloading device and a second unloading device are provided. The first unloading device includes a sedimentation hopper 2, a support frame 3, a support plate 4 and a telescopic oil cylinder 5. A through groove 6 is provided at the bottom of the box body 1. The sedimentation hopper 2 is arranged at the through groove 6, and one side of the sedimentation hopper 2 is rotatably connected to the box body 1. The support frame 3 is arranged on the surface of the box body 1, and both ends of the support plate 4 are fixedly connected to the support frame 3. The support plate 4 is provided with a first connecting seat 7, and the lower surface of the sedimentation hopper 2 is provided with a second connecting seat 7. The second connecting seat 8, the telescopic oil cylinder 5 is rotatably arranged on the first connecting seat 7, and the telescopic end of the telescopic oil cylinder 5 is rotatably connected to the second connecting seat 8. The scraping device includes a first mounting seat 9, a second mounting seat 10, a first rotating rod 11, a second rotating rod 12, a transmission mechanism and a scraper 13. The first connecting plate 14 and the second connecting plate 15 are respectively provided on both sides of the upper surface of the box body 1. The first mounting seat 9 and the first connecting plate 14 are detachably connected by bolts, and the second mounting seat 10 and the second connecting plate 15 are detachably connected by bolts. The second unloading device includes a collecting bucket 16, a mounting frame 17, a driving motor 18 and a fixing mechanism. The mounting frame 17 is fixedly connected to the box body 1. Both ends of the collecting bucket 16 are provided with connecting shafts 19, and the connecting shafts 19 are rotatably connected to the mounting frame 17. The driving motor 18 is arranged on one side of the mounting frame 17, and its output shaft passes through the mounting frame 17 and is connected to the connecting shaft 19. The collecting bucket 16 and the box body 1 are connected by a fixing mechanism. The fixing mechanism includes a fixing rod 23, a limiting rod 24 and a rotating plate 25. The fixing rod 23 and the limiting rod 24 are fixedly arranged outside the box body 1 and the collecting bucket 16, respectively. One end of the rotating plate 25 is rotatably sleeved outside the fixing rod 23, and the other end is provided with a limiting groove 26 that cooperates with the limiting rod 24. A first partition 27 is provided in the box body 1, a second partition 28 is provided between the first partition 27 and the box body 1, a first through groove 29 is provided between the bottom of the second partition 28 and the bottom of the box body 1, and a second through groove 30 is provided on the first partition 27. A first cover plate 31 and a second cover plate 32 are provided on the upper surface of the box body 1, a stirring assembly 33 is provided on the first cover plate 31, and a water inlet pipe 34 is penetrated in the second cover plate 32. A dissolved air tank 35 is provided on one side of the box body 1 , a water pump 36 is provided at one end of the dissolved air tank 35 , a water pipe 37 is provided at one end of the water pump 36 away from the dissolved air tank 35 , and the water pipe 37 is connected to the water inlet pipe 34 .

[0029] In this embodiment, wastewater is injected into the space in the box body 1 below the first cover plate 31, and flocculant is also injected into the area. The wastewater and flocculant are stirred by the stirring assembly 33 to make them fully mixed, and enter the area below the second cover plate 32 along the first through groove 29. The dissolved air in the dissolved air tank 35 is introduced into the water delivery pipe 37 through the water delivery pump 36, and enters the wastewater in the box body 1 along the water inlet pipe 34. When the dissolved air water is injected into the wastewater, the gas in the water is released due to the pressure reduction. The impurities are then gradually lifted up to form bubbles, which are then wrapped around the impurities. As the liquid level gradually rises, the bubbles eventually enter the housing 1 above the sedimentation bucket 2 from the second through groove 30. At this time, the impurities continuously float to the surface of the water, and the scum is scraped off into the collecting bucket 16 by the scraping device. When there is a lot of scum in the collecting bucket 16, the rotating plate 25 is rotated to disengage the limit groove 26 above it from the limit rod 24, and then the driving motor 18 is started to drive the connecting shaft 19 to rotate, thereby driving the collecting bucket 16 to rotate and pouring out the scum in the collecting bucket 16.

[0030] See also Figure 1-5 As an embodiment of the scraper device: both ends of the first rotating rod 11 and the second rotating rod 12 are rotatably connected to the first connecting seat 7 and the second connecting seat 8 respectively, the transmission mechanism includes a first sprocket 20, a second sprocket 21 and a chain 22, the first sprocket 20 and the second sprocket 21 are fixedly sleeved outside the first rotating rod 11 and the second rotating rod 12 respectively, and the chain 22 is cooperatively connected with the first sprocket 20 and the second sprocket 21. There are two groups of transmission mechanisms, and the first sprockets 20 in the two groups of transmission mechanisms are sleeved outside the first rotating rod 11, and the second sprockets 21 in the two groups of transmission mechanisms are sleeved outside the second rotating rod 12. There are a plurality of scrapers 13, and the two ends of the plurality of scrapers 13 are respectively connected to the chains 22 in the two groups of transmission mechanisms.

[0031] More specifically, when the scraping device is used, the first rotating rod 11 is connected to an external motor, which drives the first rotating rod 11 to rotate through the external motor, and drives the first sprocket 20 on the first rotating rod 11 to rotate, and the chain 22 cooperates with the second sprocket 21 to drive the chain 22 to move, and finally drives a plurality of scrapers 13 connected to the chain 22 to move, and the scrapers 13 are used to scrape the scum on the water surface into the collecting bucket 16. When there is a lot of sediment in the sedimentation bucket 2, the water in the box body 1 is first introduced into the next process. A material collecting box 38 is preset under the sedimentation bucket 2. The telescopic cylinder 5 is started to shrink and drive the sedimentation bucket 2 to rotate and open, so that the precipitated impurities in the sedimentation bucket 2 can fall into the material collecting box 38 below.

[0032] In summary, when the overall equipment is in use or running: wastewater is injected into the space in the box body 1 below the first cover plate 31, and flocculant is also injected into the area, the wastewater and flocculant are stirred by the stirring component 33 to make them fully mixed, and enter the area below the second cover plate 32 along the first through groove 29, and the dissolved air in the dissolved air tank 35 is introduced into the water delivery pipe 37 through the water delivery pump 36, and enters the wastewater in the box body 1 along the water inlet pipe 34. When the dissolved air water is injected into the wastewater, the gas in the water is reduced due to the pressure reduction. It will be released to form bubbles and wrap around the impurities. As the liquid level gradually rises, it will eventually enter the box 1 above the sedimentation bucket 2 from the second through groove 30. At this time, impurities continue to float to the surface, and the scum is scraped into the collecting bucket 16 by the scraping device. When there is a lot of scum in the collecting bucket 16, the rotating plate 25 is rotated at this time to disengage the limiting groove 26 above it from the limiting rod 24, and then the driving motor 18 is started to drive the connecting shaft 19 to rotate, drive the collecting bucket 16 to rotate, and pour out the scum in the collecting bucket 16.

[0033] When the scraping device is in use, the first rotating rod 11 is connected to an external motor, which drives the first rotating rod 11 to rotate through the external motor, and drives the first sprocket 20 on the first rotating rod 11 to rotate, and drives the chain 22 to move through the cooperation of the second sprocket 21, and finally drives a plurality of scrapers 13 connected to the chain 22 to move, and the scrapers 13 are used to scrape the scum on the water surface into the collecting bucket 16. When there is a lot of sediment in the sedimentation bucket 2, the water in the box body 1 is first introduced into the next process. A material collecting box 38 is preset under the sedimentation bucket 2. The telescopic cylinder 5 is started to shrink and drive the sedimentation bucket 2 to rotate and open, so that the precipitated impurities in the sedimentation bucket 2 can fall into the material collecting box 38 below.

[0034] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A flotation device for wastewater treatment, comprising a housing (1), characterized in that: The box body (1) is provided with a scraping device, a first unloading device and a second unloading device. The first unloading device comprises a sedimentation hopper (2), a support frame (3), a support plate (4) and a telescopic oil cylinder (5). A through groove (6) is provided at the bottom of the box body (1). The sedimentation hopper (2) is arranged at the through groove (6), and one side of the sedimentation hopper (2) is rotatably connected to the box body (1). The support frame (3) is arranged on the surface of the box body (1). Both ends of the support plate (4) are fixedly connected to the support frame (3). A first connecting seat (7) is provided on the support plate (4). A second connecting seat (8) is provided on the lower surface of the sedimentation hopper (2). The telescopic oil cylinder (5) is rotatably arranged on the first connecting seat (7), and the telescopic end of the telescopic oil cylinder (5) is rotatably connected to the second connecting seat (8). The scraper device comprises a first mounting seat (9), a second mounting seat (10), a first rotating rod (11), a second rotating rod (12), a transmission mechanism and a scraper (13). The first connecting plate (14) and the second connecting plate (15) are respectively provided on both sides of the upper surface of the box body (1). The first mounting seat (9) and the first connecting plate (14) are detachably connected by bolts, and the second mounting seat (10) and the second connecting plate (15) are detachably connected by bolts.

2. The air flotation device for wastewater treatment according to claim 1, characterized in that: The second unloading device comprises a collecting bucket (16), a mounting frame (17), a driving motor (18) and a fixing mechanism; the mounting frame (17) is fixedly connected to the casing (1); connecting shafts (19) are provided at both ends of the collecting bucket (16); and the connecting shafts (19) are rotatably connected to the mounting frame (17); the driving motor (18) is arranged on one side of the mounting frame (17); and its output shaft passes through the mounting frame (17) and is connected to the connecting shaft (19); and the collecting bucket (16) and the casing (1) are connected via the fixing mechanism.

3. The air flotation device for wastewater treatment according to claim 1, characterized in that: Both ends of the first rotating rod (11) and the second rotating rod (12) are rotatably connected to the first connecting seat (7) and the second connecting seat (8) respectively. The transmission mechanism comprises a first sprocket (20), a second sprocket (21) and a chain (22). The first sprocket (20) and the second sprocket (21) are fixedly sleeved outside the first rotating rod (11) and the second rotating rod (12) respectively, and the chain (22) is cooperatively connected to the first sprocket (20) and the second sprocket (21).

4. The air flotation device for wastewater treatment according to claim 3, characterized in that: The transmission mechanism is provided with two groups, and the first sprockets (20) in the two groups of the transmission mechanism are both sleeved outside the first rotating rod (11), and the second sprockets (21) in the two groups of the transmission mechanism are both sleeved outside the second rotating rod (12). A plurality of scrapers (13) are provided, and the two ends of the plurality of scrapers (13) are respectively connected to the chains (22) in the two groups of the transmission mechanism.

5. The air flotation device for wastewater treatment according to claim 2, characterized in that: The fixing mechanism comprises a fixing rod (23), a limiting rod (24) and a rotating plate (25); the fixing rod (23) and the limiting rod (24) are respectively fixedly arranged outside the box body (1) and the collecting bucket (16); one end of the rotating plate (25) is rotatably sleeved outside the fixing rod (23), and the other end is provided with a limiting groove (26) that cooperates with the limiting rod (24).

6. The air flotation device for wastewater treatment according to claim 1, characterized in that: A first partition (27) is provided in the box body (1), a second partition (28) is provided between the first partition (27) and the box body (1), a first through groove (29) is provided between the bottom of the second partition (28) and the bottom of the box body (1), and a second through groove (30) is provided on the first partition (27).

7. The air flotation device for wastewater treatment according to claim 6, characterized in that: The upper surface of the box body (1) is provided with a first cover plate (31) and a second cover plate (32); a stirring assembly (33) is provided on the first cover plate (31); and a water inlet pipe (34) is provided through the second cover plate (32).

8. The air flotation device for wastewater treatment according to claim 7, characterized in that: A dissolved air water tank (35) is provided on one side of the box body (1), a water supply pump (36) is provided at one end of the dissolved air water tank (35), a water supply pipe (37) is provided at one end of the water supply pump (36) away from the dissolved air water tank (35), and the water supply pipe (37) is connected to the water inlet pipe (34).

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