Efficient air flotation device

Abstract

The utility model relates to an efficient air flotation device which comprises a box body, the interior of the box body is divided into a separation area through a partition plate, and the separation area comprises a scum tank fixed in the box body; the second inclined plate is fixed at the upper end of the scum tank and is obliquely arranged towards the flowing direction of the sewage; the scum scraping machine comprises a driving mechanism which is arranged on the box body and corresponds to the scum tank in position; the first scraping plate is rotatably arranged on the driving mechanism; the second scraping plate is obliquely connected with the first scraping plate in the moving direction of the first scraping plate; the elastic piece is connected between the first scraping plate and the driving mechanism; wherein the driving mechanism drives the first scraping plate to rotate in the sewage flowing direction, and when the second scraping plate makes contact with the second inclined plate, the second inclined plate pushes the first scraping plate to rotate; when the second scraping plate is separated from the second inclined plate, the first scraping plate is reset to the first position under the action of elastic force, suspended matters in the scraping plate are thrown into the scum tank by virtue of the elastic force, and the second scraping plate prevents the suspended matters from settling or flowing out of the scraping plate, so that the sewage treatment efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of air floaters, in particular to a high-efficiency air floater. Background Art

[0002] The flotation device includes a box body, which usually has a separation zone. A scraper and a scum tank are arranged in the separation zone on the box body. The scraper includes a driving mechanism and a scraper plate. The scraper plate is a straight plate. The driving mechanism drives the scraper plate to rotate along the flow direction of the sewage to scrape the air bubbles on the surface of the sewage into the scum tank. However, some of the suspended matter on the surface of the sewage may settle again under the action of gravity due to aggregation or bubble rupture after rising, reducing the sewage treatment effect.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0004] In view of the deficiencies of the prior art, the embodiment of the utility model discloses a high-efficiency air flotation device to solve the problem that the suspended matter on the surface of the water body re-sediments and causes the sewage treatment effect to be reduced.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A high-efficiency flotation device comprises a box body, wherein the box body is divided into a separation zone by a partition, and the separation zone comprises: a scum trough fixed in the box body; a second inclined plate fixed to the upper end of the scum trough and inclined toward the flow direction of sewage; a scum scraper comprising: a driving mechanism arranged on the box body and corresponding to the position of the scum trough; a first scraper rotatably arranged on the driving mechanism; a second scraper connected to the first scraper at an angle toward the moving direction of the first scraper; an elastic member connected between the first scraper and the driving mechanism; wherein the driving mechanism drives the first scraper to rotate along the flow direction of sewage, and when the second scraper contacts the second inclined plate, the second inclined plate pushes the first scraper to rotate; when the second scraper is separated from the second inclined plate, the first scraper is reset to the first position under the action of the elastic force.

[0007] A further technical solution is that the second inclined plate includes: two first through holes, which are opened on both sides of the second inclined plate; a second through hole, which is opened at the upper end of the second inclined plate; wherein a portion of the bottom edge of the second scraper passes through the first through hole, and another portion of the bottom edge of the second scraper passes through the second through hole.

[0008] Its further technical solution is that the driving mechanism includes: at least four shaft seats symmetrically arranged on both sides of the upper end of the box body; a rotating shaft rotating through the shaft seats; sprockets arranged at both ends of the rotating shaft; a chain sleeved on the outside of the sprockets; a connecting plate connected between the chains; a motor arranged on the box body and transmission-connected to the sprockets; wherein the first scraper is rotationally connected to the surface of the connecting plate.

[0009] A further technical solution is that the first scraper is perpendicular to the connecting plate, and the second scraper is perpendicular to the first scraper.

[0010] Its further technical solution is that the connecting plate includes: protrusions, which are arranged on both sides of the lower end of the connecting plate and have a third through hole inside; the first scraper includes: a shaft, which is arranged on the upper ends of both sides of the first scraper and inserted into the third through hole; wherein the first end of the elastic member is connected to the third through hole, and the second end is connected to the shaft.

[0011] A further technical solution is that the box body is divided into a stirring zone, a water inlet zone, a separation zone and a water outlet zone by a partition, and the stirring zone, water inlet zone, separation zone and water outlet zone are connected in sequence.

[0012] The stirring zone includes: a water inlet pipe, which is arranged on the side of the box; a stirrer, which is arranged on the box and has a stirring head extending into the stirring zone;

[0013] The water inlet area includes: a first inclined plate, obliquely connected to the box body; a releaser, extending into the water inlet area;

[0014] The separation zone includes: a water collecting pipe, which passes through the partition plate and has two ends respectively connected to the separation zone and the water outlet zone;

[0015] The water outlet area includes: an adjusting weir gate connected to the box body; a water outlet pipe arranged on the side of the box body;

[0016] A further technical solution is that the air flotation device also includes an air dissolving mechanism, which includes: an air dissolving pump connected to the releaser; a reflux pump connected to the air dissolving pump; a reflux pipe, a first end of which is connected to the water outlet area and a second end of which is connected to the reflux pump.

[0017] The beneficial effects of the embodiments of the utility model are as follows:

[0018] (1) The high-efficiency air flotation device of the utility model includes a box body, which is divided into a separation zone by a partition. The separation zone includes a scum trough and a second inclined plate fixed at the upper end of the scum trough. A scraper is also arranged in the separation zone, and the scraper includes a driving mechanism, a first scraper rotatably arranged on the driving mechanism, and a second scraper connected to the first scraper inclined toward the moving direction of the first scraper, and an elastic member is connected between the first scraper and the driving mechanism. Among them, the driving mechanism drives the first scraper to rotate along the flow direction of the sewage, and the first scraper pushes the suspended matter on the surface of the sewage. When the second scraper contacts the second inclined plate, the second inclined plate pushes the first scraper to rotate, and the second scraper slides on the surface of the second inclined plate; when the second scraper is separated from the second inclined plate, the first scraper is reset to the first position under the action of the elastic force, and the suspended matter in the scraper is thrown out into the scum trough by the elastic force. The second scraper prevents the suspended matter from settling or flowing out of the scraper, and the sewage treatment efficiency is high.

[0019] (ii) Further, the second inclined plate includes a first through hole and a second through hole. There are two first through holes, which are opened on both sides of the second inclined plate, and the second through hole is opened in the middle of the upper end of the second inclined plate. The first through hole and the second through hole are both located above the water level. When the second scraper slides on the surface of the second inclined plate, the bubble suspension on both sides of the scraper flows into the scum tank through the first through hole, and the bubble suspension in the middle of the scraper flows into the scum tank through the second through hole, thereby improving the collection efficiency of the suspended matter. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view structural schematic diagram of the air flotation device of the utility model.

[0021] Figure 2 It is a schematic diagram of the top structure of the air flotation device of the utility model.

[0022] Figure 3 It is a front view structural schematic diagram of the first scraper and the second scraper in the air flotation device of the utility model.

[0023] Figure 4 This is a diagram showing the use status of the first scraper and the second scraper in the air flotation device of the utility model.

[0024] Figure 5 It is a side structural schematic diagram of the first scraper and the second scraper in the air flotation device of the utility model.

[0025] Figure 6 It is a schematic diagram of the top view of the second inclined plate in the air flotation device of the utility model.

[0026] In the figure:

[0027] 1. Mixing area; 11. Mixer; 111. Mixing head; 12. Water inlet pipe; 2. Water inlet area; 21. First inclined plate; 3. Separation area; 31. Scum trough; 32. Scum outlet; 33. Second inclined plate; 331. First through hole; 332. Second through hole; 333. Reinforcement plate; 34. Water collecting pipe; 4. Water outlet area; 41. Adjustment weir gate; 42. Water outlet pipe; 5. Box; 51. First Partition; 52, second partition; 6, scraper; 61, motor; 62, shaft seat; 63, rotating shaft; 64, sprocket; 65, chain; 66, connecting plate; 661, protrusion; 662, third through hole; 67, first scraper; 671, shaft body; 68, second scraper; 69, elastic member; 7, air dissolving mechanism; 71, reflux pipe; 72, reflux pump; 73, air dissolving pump; 74, releaser. DETAILED DESCRIPTION

[0028] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0029] In order to make the purpose, technical scheme and advantages of the utility model clearer, the device proposed in the utility model is further described in detail below in combination with the accompanying drawings and specific implementation methods. According to the following description, the advantages and features of the utility model will be clearer. It should be noted that the accompanying drawings adopt a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the implementation method of the utility model. In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structure, proportion, size, etc. illustrated by the accompanying drawings of this specification are only used to match the content disclosed in the specification, so that people familiar with this technology can understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so it has no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that the utility model can produce and the purpose that can be achieved, should still fall within the scope of the technical content disclosed by the utility model.

[0030] First embodiment:

[0031] This embodiment discloses a high-efficiency air flotation device.

[0032] Figure 1 It is a front view structural schematic diagram of the air flotation device of the utility model. Figure 2 It is a schematic diagram of the top structure of the air flotation device of the utility model. Figure 3 It is a front view structural schematic diagram of the first scraper and the second scraper in the air flotation device of the utility model. Figure 4 This is a diagram showing the use status of the first scraper and the second scraper in the air flotation device of the utility model. Figure 1 to Figure 4As shown, the high-efficiency air flotation device includes a housing 5, and the housing 5 is divided into a separation zone 3 by a partition. The separation zone 3 includes a scum trough 31, a second inclined plate 33 and a scraper 6. The scum trough 31 is fixed in the housing 5, and the second inclined plate 33 is fixed to the upper end of the scum trough 31 and is inclined toward the flow direction of the sewage. The scraper 6 includes a driving mechanism, a first scraper 67, a second scraper 68 and an elastic member 69. The driving mechanism is arranged on the housing 5, and the position corresponds to the scum trough 31. The first scraper 67 is rotatably arranged on the driving mechanism. The second scraper 68 is connected to the first scraper 67 in an inclined manner toward the moving direction of the first scraper 67. The elastic member 69 is connected between the first scraper 67 and the driving mechanism. Among them, the driving mechanism drives the first scraper 67 to rotate along the sewage flow direction. When the second scraper 68 contacts the second inclined plate 33, the second inclined plate 33 pushes the first scraper 67 to rotate; when the second scraper 68 is separated from the second inclined plate 33, the first scraper 67 is reset to the first position under the action of elastic force.

[0033] like Figure 1 and Figure 2 As shown, further, the driving mechanism includes a shaft seat 62, and the shaft seats 62 are four and symmetrically arranged on both sides of the upper end of the box body 5. There are two rotating shafts 63, and the rotating shafts 63 rotate through the shaft seats 62. Sprocket wheels 64 are arranged at both ends of each rotating shaft 63. Chains 65 are sleeved on the outer sides of the sprocket wheels 64 on the same side, and connecting plates 66 are connected between the two chains 65. The motor 61 is arranged on the box body 5, and the motor 61 is connected to the sprocket wheels 64 through a belt or chain 65. Among them, the first scraper 67 is rotatably connected to the surface of the connecting plate 66.

[0034] Figure 5 FIG. 1 is a side view of the first scraper and the second scraper in the air flotation device of the utility model. Figure 5 As shown, illustratively, the connecting plate 66 includes a protrusion 661, which is arranged on both sides of the lower end of the connecting plate 66, and a third through hole 662 is opened inside the adjacent side of the two protrusions 661. The first scraper 67 includes a shaft 671, which is arranged on the upper ends of both sides of the first scraper 67 and inserted into the third through hole 662. Among them, the first end of the elastic member 69 is connected to the third through hole 662, and the second end is connected to the shaft 671. The elastic member 69 is a torsion spring. Preferably, the first scraper 67 is perpendicular to the connecting plate 66, and the second scraper 68 is perpendicular to the first scraper 67. When the first scraper 67 pushes the bubble suspension on the sewage surface, the second scraper 68 prevents the suspension from settling. Under the action of inertia, the suspension is always between the first scraper 67 and the second scraper 68.

[0035] like Figure 1 and Figure 2 As shown, further, the box body 5 is divided into a stirring zone 1, a water inlet zone 2, a separation zone 3 and a water outlet zone 4 by a partition, and the stirring zone 1, the water inlet zone 2, the separation zone 3 and the water outlet zone 4 are connected in sequence.

[0036] like Figure 1 and Figure 2 As shown, further, the stirring zone 1 includes a water inlet pipe 12 and a stirrer 11. The water inlet pipe 12 is arranged on the side of the box body 5, and the stirrer 11 is arranged on the box body 5. The stirrer 11 has a stirring head 111 extending into the stirring zone 1. Exemplarily, the stirring zone 1 is separated from the box body 5 by a first partition 51. The water inlet pipe 12 is connected to the stirring zone 1, and sewage is fed into the stirring zone 1 through the water inlet pipe 12. After the flocculant is added to the sewage, the stirring head 111 at the lower end of the stirrer 11 stirs the sewage so that it is evenly mixed with the flocculant and produces suspended matter. The flocculant can be polyaluminum chloride or polyacrylamide, etc.

[0037] The water inlet area 2 includes a first inclined plate 21 and a releaser 74. The first inclined plate 21 is connected to the box body 5 at an angle, and the releaser 74 extends into the water inlet area 2. Exemplarily, the first inclined plate 21 is inclined toward the rear end, which is the end close to the flow direction of the sewage. The releaser 74 is located in the sewage between the first partition plate 51 and the first inclined plate 21. The releaser 74 releases a large number of fine bubbles into the sewage. The bubbles mix with the suspended matter and drive the suspended matter to rise along the first inclined plate 21. The first inclined plate 21 guides the flow of sewage so that the suspended matter in the sewage is better mixed with the bubbles.

[0038] The separation zone 3 includes a water collecting pipe 34, which is arranged through the partition, and the two ends are respectively connected to the separation zone 3 and the water outlet zone 4. Exemplarily, the water collecting pipe 34 passes through the lower end of the second partition 52, and a plurality of water inlet holes are provided on the water collecting pipe 34 for the clean water to pass through. A scum groove 31 is provided on the side of the second partition 52, and a scum discharge port 32 is provided in the scum groove 31. Preferably, the water inlet hole is provided at the lower end of the water collecting pipe 34 to reduce the possibility of a small amount of suspended matter entering the water collecting pipe 34.

[0039] The water outlet area 4 includes an adjusting weir gate 41 and a water outlet pipe 42. The adjusting weir gate 41 is connected to the box body 5, and the water outlet pipe 42 is arranged on the side of the box body 5. Exemplarily, the height of the weir gate 41 is adjusted by rotating the handle to adjust the water level of the water outlet area 4. The water outlet pipe 42 is connected to the water outlet area 4, and the clean water is discharged through the water outlet pipe 42.

[0040] Further, the air flotation device also includes an air dissolving mechanism 7, which includes an air dissolving pump 73, a reflux pump 72 and a reflux pipe 71. The air dissolving pump 73 is connected to the releaser 74, the reflux pump 72 is connected to the air dissolving pump 73, the first end of the reflux pipe 71 is connected to the water outlet area 4, and the second end of the reflux pipe 71 is connected to the reflux pump 72. Specifically, the reflux pump 72 draws back the clean water through the reflux pipe 71, and the air dissolving pump 73 mixes the tiny bubbles with the clean water, and transports the clean water containing the tiny bubbles to the releaser 74 to be released into the sewage.

[0041] When this embodiment is working:

[0042] The motor 61 drives the sprocket 64 to rotate, the sprocket 64 drives the chain 65 to rotate, the chain 65 drives the connecting plate 66 to rotate, the connecting plate 66 drives the first scraper 67 and the second scraper 68 to rotate counterclockwise along the sewage flow direction, the second scraper 68 contacts the second inclined plate 33, the second inclined plate 33 pushes the first scraper 67 to rotate clockwise around the shaft 671, the second scraper 68 slides on the surface of the second inclined plate 33, the second scraper 68 prevents the internal suspended matter from flowing out; when the second scraper 68 is separated from the second inclined plate 33, the first scraper 67 is reset to the first position under the action of elastic force, and the suspended matter in the scraper is thrown out into the scum tank 31 by means of the elastic force, so as to realize the treatment of sewage.

[0043] In this embodiment, the driving mechanism drives the first scraper 67 and the second scraper 68 to rotate along the sewage flow direction. The first scraper 67 pushes the suspended matter on the sewage surface, and the second scraper 68 prevents the suspended matter from settling or flowing out of the scraper, thereby improving the sewage treatment efficiency.

[0044] Second embodiment:

[0045] Based on the first embodiment, the second embodiment further optimizes and refines the second inclined plate 33 of the first embodiment.

[0046] Figure 6 FIG. 1 is a schematic diagram of the top view of the second inclined plate in the air flotation device of the utility model. Figure 6 As shown, the second inclined plate 33 includes a first through hole 331 and a second through hole 332. There are two first through holes 331, which are opened on both sides of the second inclined plate 33, and the second through hole 332 is opened in the middle of the upper end of the second inclined plate 33. Among them, a part of the bottom edge of the second scraper 68 passes through the first through hole 331, and another part of the bottom edge of the second scraper 68 passes through the second through hole 332. Exemplarily, the first through hole 331 and the second through hole 332 are both located above the water level to prevent sewage from directly leaking into the scum tank 31. The second scraper 68 is separated from the second inclined plate 33, and the first scraper 67 is reset to the first position under the action of elastic force, and part of the suspended matter in the scraper can be thrown out into the scum tank 31 with the help of the elastic force, but it cannot be thrown out completely. The bubble suspension on both sides of the scraper flows into the scum tank 31 through the first through hole 331, and the bubble suspension in the middle of the scraper flows into the scum tank 31 through the second through hole 332. A portion of the bottom edge of the second scraper 68 passing through the first through hole 331 overlaps with another portion of the bottom edge passing through the second through hole 332. Preferably, a reinforcing plate 333 is provided at the rear lower end of the second inclined plate 33 to improve the support strength of the second inclined plate 33.

[0047] In this embodiment, when the second scraper 68 slides on the surface of the second inclined plate 33, the bubble suspension on both sides of the scraper flows into the scum groove 31 through the first through hole 331, and the bubble suspension in the middle of the scraper flows into the scum groove 31 through the second through hole 332, thereby improving the collection efficiency of the suspended matter.

[0048] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. High-efficiency air flotation device, characterized in that: The box comprises a housing, wherein the housing is divided into a separation area by a partition, and the separation area comprises: A scum trough is fixed in the box; A second inclined plate is fixed to the upper end of the scum tank and is inclined toward the flow direction of the sewage; Slag scraper, including: A driving mechanism is arranged on the box body and its position corresponds to the scum groove; A first scraper is rotatably disposed on the driving mechanism; a second scraper connected to the first scraper at an angle toward a moving direction of the first scraper; an elastic member connected between the first scraper and the driving mechanism; Among them, the driving mechanism drives the first scraper to rotate along the sewage flow direction, and when the second scraper contacts the second inclined plate, the second inclined plate pushes the first scraper to rotate; when the second scraper is separated from the second inclined plate, the first scraper is reset to the first position under the action of elastic force.

2. The high-efficiency air flotation device according to claim 1, characterized in that: The second inclined plate comprises: Two first through holes are provided on both sides of the second inclined plate; A second through hole is provided at the upper end of the second inclined plate; Part of the bottom edge of the second scraper plate passes through the first through hole, and another part of the bottom edge of the second scraper plate passes through the second through hole.

3. The high-efficiency air flotation device according to claim 1, characterized in that: The driving mechanism comprises: There are at least four axle seats, which are symmetrically arranged on both sides of the upper end of the box body; A rotating shaft, rotating through the shaft seat; Sprockets are arranged at both ends of the rotating shaft; A chain, sleeved on the outer side of the sprocket; A connecting plate connected between the chains; A motor is disposed on the box body and is transmission-connected to the sprocket; Wherein, the first scraper is rotatably connected to the surface of the connecting plate.

4. The high-efficiency air flotation device according to claim 3, characterized in that: The first scraper is perpendicular to the connecting plate, and the second scraper is perpendicular to the first scraper.

5. The high-efficiency air flotation device according to claim 3, characterized in that: The connecting plate comprises: A convex block is arranged on both sides of the lower end of the connecting plate and has a third through hole formed therein; The first scraper comprises: A shaft body, arranged at the upper ends of both sides of the first scraper and inserted into the third through hole; Wherein, the first end of the elastic member is connected to the third through hole, and the second end is connected to the shaft body.

6. The high-efficiency air flotation device according to claim 1, characterized in that: The box body is divided into a stirring zone, a water inlet zone, a separation zone and a water outlet zone by a partition, and the stirring zone, the water inlet zone, the separation zone and the water outlet zone are connected in sequence.

7. The high-efficiency air floater according to claim 6, characterized in that: The stirring zone comprises: A water inlet pipe is arranged on the side of the box body; A mixer, disposed on the box, having a mixing head extending into the mixing area; The water inlet area includes: A first inclined plate, obliquely connected to the box body; a releaser extending into the water inlet area; The separation zone comprises: A water collecting pipe is arranged through the partition plate, and its two ends are respectively connected to the separation area and the water outlet area; The water outlet area comprises: An adjusting weir gate is connected to the box body; The water outlet pipe is arranged on the side of the box body.

8. The high-efficiency air floater according to claim 7, characterized in that: The air flotation device also includes an air dissolving mechanism, and the air dissolving mechanism includes: An air dissolving pump connected to the releaser; A reflux pump connected to the air dissolving pump; A reflux pipe has a first end connected to the water outlet area and a second end connected to the reflux pump.

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