Sewage treatment device for air floatation dissolved air

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a sewage treatment device for air floatation dissolved air. Comprising a tank body with an opening in the top, a support is arranged at the top end of the tank body, a first motor is fixedly installed at the top of the support, an output shaft of the first motor rotationally penetrates through the support and is provided with a stirring shaft, the stirring shaft is rotationally installed in the tank body, and a circular plate is fixedly installed in the tank body; a gas spraying box is fixedly installed at the top of the circular plate, a plurality of gas holes are formed in the inner wall of the top of the gas spraying box in a penetrating mode, the gas holes are distributed in a petal-shaped array mode, a baffle is rotatably installed at the top of the gas spraying box, and a plurality of through holes distributed in a petal-shaped array mode are formed in the baffle in a penetrating mode. Through a simple rotating shielding structure, the gas spraying box can be effectively shielded, the problem that gas spraying holes are blocked by suspended solids in sewage or dirt enters the gas spraying box through the gas spraying holes when the gas spraying box does not work can be effectively avoided, and follow-up use is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a sewage treatment device for air flotation and dissolved air. Background Art

[0002] With the continuous development of economy, the process of urbanization and industrialization is accelerating, and a large amount of urban domestic sewage and industrial sewage are produced. In order to prevent environmental pollution, sewage needs to be treated before discharge. In the sewage treatment process, sewage often needs to be flocculated and flotated to remove suspended particles in the sewage. The flotation principle is to try to produce a large number of microbubbles in the water to form a three-phase mixture of water, air and the removed substances. Under the joint action of various forces such as interfacial tension, bubble rising buoyancy and hydrostatic pressure difference, the microbubbles are promoted to adhere to the removed flocculants and particles. On the material, because the density of the adhesive body is less than that of water, it floats to the water surface, so that it is convenient to scrape the floating flocculants from the liquid surface of the sewage pool. The prior art discloses a gas flotation and dissolved air sewage treatment device with the authorization announcement number CN212954398U, including a fixed bottom plate, a sedimentation tank, a support rod, a fixed frame, a first servo motor, a rotating rod, a second servo motor, a fixed block, a scraper, a fixed plate, a sliding plate, a cleaning plate, a threaded rod, a guide rod, a stirring rod, a collecting tank, a support plate, a first connecting pipe, a dissolved air pump, a second connecting pipe, a fixed shell, a first bevel gear and a second bevel gear. The structure is reasonable and easy to use. The sewage can be purified by flotation. At the same time, the scum cleaning structure can be used to clean the scum more conveniently. The cleaning is convenient, the effect is good, and manpower is saved. The device can fully integrate the sewage and the coagulant through the stirring action of the stirring rod, so that the flotation efficiency is high, which is suitable for promotion and use. However, it was found during use that the existing flotation and dissolved air sewage treatment device is not convenient for shielding the gas spray box, which causes the jet holes on the gas spray box to be easily blocked by suspended matter in the sewage when not spraying, and the dirt easily enters the gas spray box and accumulates, which is not conducive to subsequent use. Utility Model Content

[0003] In view of the above problems, the purpose of the utility model is to provide a sewage treatment device for flotation and dissolved air, which is convenient for effectively shielding the gas spray box, and can effectively prevent the jet holes of the gas spray box from being blocked by suspended matter in the sewage or dirt from entering the gas spray box through the jet holes when the gas spray box is not working, so as to facilitate subsequent use and solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above objectives, the technical solution adopted by the utility model is as follows: A sewage treatment device for air flotation dissolved air includes a tank with an open top. A support is provided at the top end of the tank, and a first motor is fixedly installed on the top of the support. The output shaft of the first motor rotates through the support and is provided with a stirring shaft, which is rotatably installed in the tank. A circular plate is fixedly installed in the tank, and a gas spraying box is fixedly installed on the top of the circular plate. A plurality of air holes penetrate through the top inner wall of the gas spraying box, and the plurality of air holes are arranged in a petal-shaped array. A baffle is rotatably installed on the top of the gas spraying box, and a plurality of through holes arranged in a petal-shaped array penetrate through the baffle. The through holes are adapted to the air holes. An annular bevel gear is fixedly installed at the bottom of the baffle. A second motor is fixedly installed on one side of the tank, and the output shaft of the second motor extends into the tank and is provided with a bevel gear, which meshes with the annular bevel gear. An air pump is provided on one side of the tank, and an air guide pipe is provided on the air pump. One end of the air guide pipe extends into the tank and is communicated with the gas spraying box.

[0005] In order to facilitate the rapid scraping and cleaning of floating debris in the sewage:

[0006] As a further improvement of the above technical solution: The stirring shaft further includes a sliding sleeve, which is slidably sleeved on the stirring shaft. Oblique scraping plates are fixedly installed on both sides of the sliding sleeve. A rectangular through groove penetrates through the stirring shaft, and a sliding block slidably penetrates through the rectangular through groove. The sliding block is fixed in the sliding sleeve.

[0007] The beneficial effect of this improvement is that by setting it like this, it is convenient to quickly scrape and clean the floating debris in the sewage, bringing great convenience to the sewage treatment work.

[0008] In order to facilitate the support and limit of the baffle:

[0009] As a further improvement of the above technical solution: An annular clamp is fixedly installed in the tank, and the baffle is rotatably installed in the annular clamp.

[0010] The beneficial effect of this improvement is that by setting the annular clamp, it is convenient to support and limit the baffle.

[0011] In order to prevent the tank from leaking water:

[0012] As a further improvement of the above technical solution: A water inlet pipe and a drain pipe are respectively fixedly connected and communicated with both sides of the tank. A first round hole penetrates through the inner wall of one side of the tank, and the output shaft of the second motor rotates through the first round hole. A sealing ring is fixedly installed in the first round hole, and the sealing ring is rotatably sleeved on the output shaft of the second motor.

[0013] The beneficial effect of this improvement is that by setting the sealing ring, it is convenient to prevent the tank from leaking water.

[0014] To facilitate the limitation of the stirring shaft:

[0015] As a further improvement of the above technical solution: A cross bar is fixedly installed in the tank body, and the stirring shaft rotates through the cross bar.

[0016] The beneficial effect of this improvement is that by setting the cross bar, it is convenient to limit the stirring shaft.

[0017] To facilitate the limitation of the output shaft of the first motor:

[0018] As a further improvement of the above technical solution: The bracket is of a U-shaped structure, a second round hole penetrates through the bracket, and the output shaft of the first motor rotates through the second round hole.

[0019] The beneficial effect of this improvement is that by setting the second round hole, it is convenient to limit the output shaft of the first motor.

[0020] To facilitate the lifting of the sliding sleeve:

[0021] As a further improvement of the above technical solution: An annular clamping plate is fixedly sleeved on the sliding sleeve, the sliding sleeve is of a cylindrical structure, and the material of the scraping plate is metal braided net.

[0022] The beneficial effect of this improvement is that by setting the annular clamping plate, it is convenient to lift the sliding sleeve.

[0023] The beneficial effect of the present utility model is that through a simple rotating shielding structure, it is convenient to effectively shield the gas spraying box, and it can effectively avoid the problem that the gas spraying holes are blocked by suspended solids in the sewage or dirt enters the gas spraying box through the gas spraying holes when the gas spraying box is not working, which is convenient for subsequent use. Brief Description of the Drawings

[0024] Figure 1 It is the front view sectional structure schematic diagram of the present utility model;

[0025] Figure 2 It is the top view structure schematic diagram of the gas spraying box in the present utility model;

[0026] Figure 3 It is the top view structure schematic diagram of the baffle plate of the present utility model;

[0027] Figure 4 It is the present utility model Figure 1 The enlarged structure schematic diagram of part A;

[0028] Figure 5 It is the present utility model Figure 1 The enlarged structure schematic diagram of part B;

[0029] Figure 6 It is a schematic diagram of the top - view sectional assembly structure of the sliding sleeve, scraping plate and slider in the present utility model;

[0030] Figure 7 It is a schematic diagram of the three - dimensional sectional structure of the sliding sleeve in the present utility model.

[0031] In the figure: 1, tank body; 2, bracket; 3, first motor; 4, stirring shaft; 5, round plate; 6, gas spraying box; 7, air hole; 8, baffle; 9, through - hole; 10, annular bevel gear; 11, second motor; 12, bevel gear; 13, air pump; 14, air duct; 15, sliding sleeve; 16, scraping plate; 17, rectangular through - slot; 18, slider. Specific embodiments

[0032] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any restrictive effect on the protection scope of the present utility model.

[0033] Such as Figure 1-7As shown in the figure, a sewage treatment device for air flotation and dissolved air includes a tank body 1 with an open top. A support 2 is provided at the top end of the tank body 1. A first motor 3 is fixedly installed at the top of the support 2. The output shaft of the first motor 3 rotates through the support 2 and is provided with a stirring shaft 4. The stirring shaft 4 is rotatably installed in the tank body 1. A circular plate 5 is fixedly installed in the tank body 1. A gas spraying box 6 is fixedly installed on the top of the circular plate 5. A plurality of air holes 7 penetrate through the top inner wall of the gas spraying box 6. The plurality of air holes 7 are arranged in a petal-shaped array. A baffle 8 is rotatably installed on the top of the gas spraying box 6. A plurality of through holes 9 arranged in a petal-shaped array penetrate through the baffle 8. The through holes 9 are adapted to the air holes 7. A ring bevel gear 10 is fixedly installed at the bottom of the baffle 8. A second motor 11 is fixedly installed on one side of the tank body 1. The output shaft of the second motor 11 extends into the tank body 1 and is provided with a bevel gear 12. The bevel gear 12 meshes with the ring bevel gear 10. An air pump 13 is provided on one side of the tank body 1. An air guide pipe 14 is provided on the air pump 13. One end of the air guide pipe 14 extends into the tank body 1 and is communicated with the gas spraying box 6. Through a simple rotation and shielding structure, it is convenient to effectively shield the gas spraying box 6, and it can effectively avoid the problem that the air spraying holes of the gas spraying box 6 are blocked by suspended substances in the sewage or dirt enters the gas spraying box 6 through the air spraying holes when it is not working, which is convenient for subsequent use. The stirring shaft 4 further includes a sliding sleeve 15. The sliding sleeve 15 is slidably sleeved on the stirring shaft 4. Oblique scraping plates 16 are fixedly installed on both sides of the sliding sleeve 15. A rectangular through groove 17 penetrates through the stirring shaft 4. A sliding block 18 slidably penetrates through the rectangular through groove 17. The sliding block 18 is fixed in the sliding sleeve 15. By setting like this, it is convenient to quickly scrape and clean the floating sundries in the sewage, which brings great convenience to the sewage treatment work. A ring clamp is fixedly installed in the tank body 1. The baffle 8 is rotatably installed in the ring clamp. By setting the ring clamp, it is convenient to support and limit the baffle 8. A water inlet pipe and a drain pipe are respectively fixedly connected and communicated on both sides of the tank body 1. A first round hole penetrates through the inner wall on one side of the tank body 1. The output shaft of the second motor 11 rotates through the first round hole. A sealing ring is fixedly installed in the first round hole. The sealing ring is rotatably sleeved on the output shaft of the second motor 11. By setting the sealing ring, it is convenient to prevent the tank body 1 from leaking water. A cross bar is fixedly installed in the tank body 1. The stirring shaft 4 rotates through the cross bar. By setting the cross bar, it is convenient to limit the stirring shaft 4. The support 2 is of a U-shaped structure. A second round hole penetrates through the support 2. The output shaft of the first motor 3 rotates through the second round hole. By setting the second round hole, it is convenient to limit the output shaft of the first motor 3. An annular clamping plate is fixedly sleeved on the sliding sleeve 15. The sliding sleeve 15 is of a cylindrical structure. The material of the scraping plate 16 is metal woven mesh. By setting the annular clamping plate, it is convenient to lift the sliding sleeve 15.

[0034] The working principle of the present utility model is as follows: When in use, first, sewage is discharged into the tank body 1 through the water inlet pipe. Subsequently, a flocculant is added into the tank body 1. Then, the first motor 3 is started, and the output shaft of the first motor 3 drives the stirring shaft 4 to rotate. The stirring shaft 4 stirs the sewage in the tank body 1, so that the flocculant is evenly mixed with the sewage, and the suspended particles in the sewage aggregate to form flocs suspended in the sewage. Then, the second motor 11 is started, and the output shaft of the second motor 11 drives the bevel gear 12 to rotate. The bevel gear 12 drives the annular bevel gear 10 to rotate, and the annular bevel gear 10 drives the baffle 8 to rotate a certain angle on the top of the gas spraying box 6, so that a plurality of air holes 7 are communicated with the corresponding through holes 9, and the gas spraying box 6 is opened. Then, the air pump 13 is started, and the air pump 13 fills the gas into the gas spraying box 6 through the air guide pipe 14. The gas in the gas spraying box 6 is ejected through a plurality of air holes 7 to form a large number of fine bubbles. The bubbles rise in the sewage and adhere to the suspended flocs, so that the flocs are driven to rise to the surface of the sewage. By such a setting, it is convenient to effectively shield the gas spraying box 6, and it can effectively avoid the problems that the air spraying holes are blocked by the suspended substances in the sewage or the dirt enters the gas spraying box 6 through the air spraying holes when the gas spraying box 6 is not working, which is convenient for subsequent use. While the stirring shaft 4 rotates, it drives the slider 18 to rotate. The slider 18 drives the sliding sleeve 15 to rotate, and the sliding sleeve 15 drives the two scraping plates 16 to rotate to clean the sundries suspended on the surface of the sewage. Then, the sliding sleeve 15 is pulled up, so that the scraping plates 16 are taken out of the sewage, and then the sundries on the scraping plates 16 can be cleaned. By such a setting, it is convenient to quickly scrape and clean the floating sundries in the sewage, which brings great convenience to the sewage treatment work.

[0035] It should be noted that in this article, the terms "including", "comprising" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such a process, method, article or device. Specific examples are used in this article to elaborate on the principle and implementation mode of the present utility model. The description of the above examples is only used to help understand the method and its core idea of the present utility model. The above is only the preferred implementation mode of the present utility model. It should be pointed out that due to the limited nature of written expression, objectively there are infinite specific structures. For those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements, refinements or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, refinements, changes or combinations, or directly applying the concept and technical solution of the utility model to other occasions without improvement, should all be regarded as the protection scope of the present utility model.

Claims

1. A sewage treatment device for air flotation dissolved air, comprising a tank body (1) with an open top, characterized in that: A support (2) is provided at the top of the tank body (1). A first motor (3) is fixedly installed at the top of the support (2). The output shaft of the first motor (3) rotatably penetrates the support (2) and is provided with a stirring shaft (4). The stirring shaft (4) is rotatably installed in the tank body (1). A circular plate (5) is fixedly installed in the tank body (1). A gas spraying box (6) is fixedly installed at the top of the circular plate (5). A plurality of air holes (7) penetrate through the top inner wall of the gas spraying box (6). The plurality of air holes (7) are arranged in a petal-shaped array. A baffle (8) is rotatably installed at the top of the gas spraying box (6). A plurality of through holes (9) arranged in a petal-shaped array penetrate through the baffle (8). The through holes (9) are adapted to the air holes (7). An annular bevel gear (10) is fixedly installed at the bottom of the baffle (8). A second motor (11) is fixedly installed on one side of the tank body (1). The output shaft of the second motor (11) extends into the tank body (1) and is provided with a bevel gear (12). The bevel gear (12) meshes with the annular bevel gear (10). An air pump (13) is provided on one side of the tank body (1). An air guide pipe (14) is provided on the air pump (13). One end of the air guide pipe (14) extends into the tank body (1) and is communicated with the gas spraying box (6).

2. The sewage treatment device for air flotation dissolved air according to claim 1, wherein: The stirring shaft (4) further includes a sliding sleeve (15). The sliding sleeve (15) is slidably sleeved on the stirring shaft (4). Obliquely arranged scraping plates (16) are fixedly installed on both sides of the sliding sleeve (15). A rectangular through groove (17) penetrates through the stirring shaft (4). A slider (18) slidably penetrates through the rectangular through groove (17). The slider (18) is fixed in the sliding sleeve (15).

3. The sewage treatment device for air flotation dissolved air according to claim 1, characterized in that: An annular clamp is fixedly installed in the tank body (1). The baffle (8) is rotatably installed in the annular clamp.

4. A sewage treatment device for air flotation dissolved air according to claim 1, characterized in that: A water inlet pipe and a drain pipe are respectively fixedly connected and communicated on both sides of the tank body (1). A first round hole penetrates through one side inner wall of the tank body (1). The output shaft of the second motor (11) rotatably penetrates the first round hole. A sealing ring is fixedly installed in the first round hole. The sealing ring is rotatably sleeved on the output shaft of the second motor (11).

5. A sewage treatment device for air flotation dissolved air according to claim 1, characterized in that: A cross bar is fixedly installed in the tank body (1). The stirring shaft (4) rotatably penetrates the cross bar.

6. The sewage treatment device for air flotation dissolved air according to claim 1, wherein: The support (2) is of a U-shaped structure. A second round hole penetrates through the support (2). The output shaft of the first motor (3) rotatably penetrates the second round hole.

7. A sewage treatment device for air flotation dissolved air according to claim 2, characterized in that: An annular clamping plate is fixedly sleeved on the sliding sleeve (15). The sliding sleeve (15) is of a cylindrical structure. The scraping plate (16) is made of metal woven mesh.

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