Flotation and sedimentation separation device and air flotation treatment system for treating tobacco wastewater

Abstract

The invention discloses a flotation and settling separation device and an air flotation treatment system.The flotation and settling separation device comprises an air flotation tank and a pressure container tank, a drainage pump is arranged at the right end of the air flotation tank, hollow shells are arranged at the top of the air flotation tank, and a first motor is arranged at the right end of each hollow shell; the output end of each first motor is connected with a long threaded rod, the outer side of the long threaded rod is spirally connected with a moving block, the top end of the moving block is provided with a connecting rod, the two connecting rods are connected through a hollow strip, and the lower end in the hollow strip is provided with a scraping strip; the right end of the air floatation tank is provided with a waste tank; a triangular plate is arranged in the middle below the inner side of the waste tank; discharging pipes are arranged on the front and rear sides of the bottom of the waste tank. According to the flotation and settling separation device for treating the tobacco wastewater and the air flotation treatment system, manual scum scraping can be avoided, and the situation that the scum is not completely scraped at a time due to the fact that the scraping strip goes deep into the air flotation tank and the depth of the scraping strip entering the water surface is not enough is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of tobacco wastewater treatment, and more specifically, to a flotation and sedimentation separation device and an air flotation treatment system for treating tobacco wastewater. Background Art

[0002] The cigarette factory's packaging workshop will discharge high-concentration latex wastewater from time to time. Since the latex wastewater contains latex, and latex is made of tetrafluoroethylene, it cannot be biochemically degraded, and the density of latex is small, it is suspended in the water.

[0003] Tobacco wastewater flotation is a water treatment method that uses gas as a carrier to separate scum or oil droplets in the liquid through the rising force of bubbles. In tobacco wastewater, flotation is mainly used to separate and remove scum, oil and certain chemicals. In the flotation process, aeration equipment is usually used to fill air into the wastewater. The air dissolves in the water and forms tiny bubbles. The size and density of these bubbles are much smaller than those of water, so they can easily float to the water surface; when the bubbles rise, they will absorb the surrounding scum and oil droplets. This is because the surface of the bubble has a lower surface tension, making it easier for scum and oil droplets to adhere to it; as the bubbles rise, the scum and oil droplets attached to them will also rise together and eventually reach the water surface. Due to their different densities, the scum and oil droplets will gradually separate, the oil droplets float to the water surface to form an oil layer, and the scum remains under the water body; during the flotation process, flocculants can also be added to enhance the coagulation of the scum, making them easier to be adsorbed and carried by bubbles, so that the solid particles will gather together to form larger flocs, and then be carried out of the water by bubbles; after flotation treatment, the scum and oil in the water have been removed, thereby achieving water purification. At the same time, if disinfectants or other treatment agents are added during the flotation process, the content of bacteria, viruses and other harmful substances in the water can be further reduced, thereby improving the water quality;

[0004] When the current tobacco wastewater flotation method is used, the flocculated scum and wastewater are injected into the flotation tank together. After the scum enters the flotation tank, it will float up after being placed for a period of time. Generally, the scum is salvaged manually. The operator will use tools (such as filters, etc.) to go deep into the flotation tank to salvage the scum. The salvaged wastewater is discharged outward through a water pump. When another group of wastewater enters the flotation tank, the above operation is repeated again. This operation not only has the risk of falling into the flotation tank, but also increases the labor intensity of the operator.

[0005] Therefore, there is an urgent need for a flotation and sedimentation separation device and an air flotation treatment system for treating tobacco wastewater. Summary of the invention

[0006] The object of the present invention is to provide a flotation and sedimentation separation device and an air flotation treatment system for treating tobacco wastewater, so as to solve the problems in the above-mentioned prior art, avoid manual scraping of scum, and avoid the scraping bar going deep into the flotation tank, resulting in the scum not being scraped off all at once due to insufficient depth into the water surface.

[0007] The present invention provides a flotation and sedimentation separation device for treating tobacco wastewater, which comprises: an air flotation tank and a pressure vessel tank, wherein a drainage pump is arranged in the middle of the right end of the air flotation tank through a connecting pipe, a hollow shell is arranged at the top of the front and rear ends of the air flotation tank, a first motor is arranged at the right end of each of the hollow shells, a long threaded rod is arranged at the output end of each of the first motors, a moving block is respectively connected to the outer spiral of each of the long threaded rods, a connecting rod is fixedly connected to the top of each of the moving blocks, two of the connecting rods are fixedly connected at one end away from the moving block through a hollow bar, a scraping strip is arranged at the lower end of the hollow bar, a waste trough is arranged at the top of the right end of the air flotation tank, a triangular plate is arranged in the middle of the lower inner side of the waste trough, a vibration motor is arranged in the middle of the triangular plate, and a discharge pipe is arranged at the front and rear sides of the bottom of the waste trough.

[0008] The flotation and sedimentation separation device for treating tobacco wastewater as described above, wherein preferably, the lower left end of the flotation tank is fixedly connected to the output end of the pressure vessel tank through a connecting pipe, the long threaded rod is rotatably connected to the middle of the inner front side of the hollow shell at the end away from the first motor, the outer side of the moving block contacts the inner wall of the hollow shell, and the upper middle of the inner part of the hollow shell is slidably connected to the outer side of the lower end of the connecting rod.

[0009] The flotation and sedimentation separation device for treating tobacco wastewater as described above, wherein preferably, the number of the hollow shells is two, and the two hollow shells are respectively arranged at the top positions of the left and right ends of the flotation tank, and the top of the hollow shell is provided with a slide extending from left to right, and the width of the slide matches the bottom cross-sectional diameter of the connecting rod.

[0010] As described above, in the flotation and sedimentation separation device for treating tobacco wastewater, preferably, the length of the hollow bar matches the length of the front and rear sides of the outer side of the flotation tank, and the length of the scraper bar matches the length of the front and rear sides of the inner side of the flotation tank, and the longitudinal section of the scraper bar is an inverted triangle.

[0011] The flotation and sedimentation separation device for treating tobacco wastewater as described above, wherein preferably, the longitudinal section of the triangular plate is an isosceles triangle, and the height of the triangular plate is lower than the height of the inner left side of the waste trough, and through grooves are provided at the bottom of the front and rear ends of the inner side of the waste trough, and the through grooves are communicated with the top end of the discharge pipe.

[0012] The flotation and sedimentation separation device for treating tobacco wastewater as described above, wherein, preferably, a shell is provided in the top middle of the hollow bar, a second motor is provided at the rear end of the shell, a first bevel gear is provided at the output end of the second motor, a second bevel gear is meshed with the front lower side of the first bevel gear, a short threaded rod is spirally connected to the inside of the second bevel gear, the bottom end of the short threaded rod is rotatably connected to the top middle of the scraper bar, the inner lower middle of the discharge pipe and the inner upper middle of the hollow shell are both in contact with the outer side of the short threaded rod, and the bottom of the second bevel gear is rotatably connected to the inner lower middle of the shell.

[0013] As described above, the flotation and sedimentation separation device for treating tobacco wastewater, wherein, preferably, the middle inner wall of the second bevel gear is provided with an internal thread, and the pitch of the internal thread of the middle inner wall of the second bevel gear matches the pitch of the surface of the short threaded rod and is spiral, a slider is provided at the bottom of the second bevel gear, an annular groove is provided in the middle of the lower interior of the shell, and the slider is in the annular groove and can slide in the annular groove.

[0014] The present invention also provides an air flotation treatment system for treating tobacco wastewater, comprising the above-mentioned flotation and sedimentation separation device.

[0015] The flotation treatment system for treating tobacco wastewater as described above, preferably, also includes a dissolved gas production unit, a dosing reaction area, a dissolved gas release area, a clean water collection area, a scum collection area, a flow meter, a COD and ammonia nitrogen index sampling instrument and a collection information transmission control center.

[0016] The present invention provides a flotation and sedimentation separation device and an air flotation treatment system for treating tobacco wastewater. A first motor drives a hollow bar and a scraper bar to slide from left to right on the top of an air flotation tank. The scraper bar contacts the scum on the top of the air flotation tank and scrapes the scum into a waste material tank located at the top of the right end surface of the air flotation tank, which can effectively avoid manual scraping of the scum and reduce the labor intensity of manual scraping of the scum to a certain extent. At the same time, after the scum enters the waste tank, it falls on the top of a triangular plate with an inclined surface. With the help of a vibration motor inside the triangular plate, the scum can quickly flow to the tops of the front and rear sides of the triangular plate and be discharged from a discharge pipe, thereby avoiding the situation where the scum is accumulated in the waste tank for a long time and is difficult to clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described below with reference to the accompanying drawings, in which:

[0018] Figure 1 A schematic diagram of the overall structure of an embodiment of a flotation and sedimentation separation device for treating tobacco wastewater provided by the present invention;

[0019] Figure 2 A schematic diagram of a longitudinal cross-sectional three-dimensional structure of a hollow shell of an embodiment of a flotation and sedimentation separation device for treating tobacco wastewater provided by the present invention;

[0020] Figure 3 A schematic diagram of the longitudinal cross-sectional three-dimensional structure of a waste tank of an embodiment of a flotation and sedimentation separation device for treating tobacco wastewater provided by the present invention;

[0021] Figure 4 A schematic diagram of a longitudinal cross-sectional three-dimensional structure of a hollow bar of an embodiment of a flotation and sedimentation separation device for treating tobacco wastewater provided by the present invention;

[0022] Figure 5 This is a schematic diagram of the overall process of an embodiment of an air flotation treatment system for treating tobacco wastewater provided by the present invention.

[0023] Explanation of the accompanying drawings: 1-flotation tank, 2-pressure vessel tank, 3-drainage pump, 4-hollow shell, 5-first motor, 6-connecting rod, 7-hollow bar, 8-waste trough, 9-triangular plate, 10-discharge pipe, 11-shell, 12-second motor, 13-long threaded rod, 14-moving block, 15-vibration motor, 16-scraper bar, 17-first bevel gear, 18-second bevel gear, 19-short threaded rod, 20-dissolved air manufacturing unit, 21-dosing reaction zone, 22-dissolved air release zone, 23-flotation and sedimentation separation zone, 24-clean water collection zone, 25-scum collection zone, 26-flow meter, 27-COD and ammonia nitrogen index sampling instrument, 28-collection information transmission control center. DETAILED DESCRIPTION

[0024] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present disclosure and its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the components and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limiting.

[0025] The words "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprises" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0026] In the present disclosure, when a specific component is described as being located between a first component and a second component, there may or may not be an intermediate component between the specific component and the first component or the second component. When a specific component is described as being connected to other components, the specific component may be directly connected to the other components without an intermediate component, or may not be directly connected to the other components but have an intermediate component.

[0027] All terms (including technical terms or scientific terms) used in the present disclosure have the same meanings as those understood by ordinary technicians in the field to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0028] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0029] like Figure 1-Figure 4 As shown, the flotation and sedimentation separation device for treating tobacco wastewater provided in this embodiment includes: an air flotation tank 1 and a pressure vessel tank 2, a drainage pump 3 is arranged in the middle of the right end of the air flotation tank 1 through a connecting pipe, a hollow shell 4 is arranged on the top of the front and rear ends of the air flotation tank 1, a first motor 5 is arranged on the right end of each of the hollow shells 4, a long threaded rod 13 is arranged on the output end of each of the first motors 5, and the outer spiral of each of the long threaded rods 13 is respectively connected to a moving block 14, and the top of each of the moving blocks 14 is fixedly connected to a connecting rod 6, and the two connecting rods 6 are fixedly connected at one end away from the moving block 14 through a hollow bar 7, and a scraper bar 16 is arranged at the lower end of the hollow bar 7, a waste trough 8 is arranged on the top of the right end of the air flotation tank 1, a triangular plate 9 is arranged in the middle of the inner lower side of the waste trough 8, a vibration motor 15 is arranged in the middle of the inner side of the triangular plate 9, and a discharge pipe 10 is arranged on both sides of the front and rear of the bottom of the waste trough 8.

[0030] Among them, the hollow shell 4 is welded to the top of the front and rear ends of the flotation tank 1, the first motor 5 is fixed to the right end of the hollow shell 4 by bolts, the output shaft of the output end of the first motor 5 passes through the inside of the long threaded rod 13 and is welded and fixed, the outer side of the long threaded rod 13 passes through the inside of the moving block 14 and is spirally connected with the internal thread inside the moving block 14, the connecting rod 6 is welded to the top of the moving block 14, the hollow bar 7 is welded to the end of the connecting rod 6 away from the moving block 14, the waste trough 8 is welded to the top of the right end of the flotation tank 1, the triangular plate 9 is welded to the middle of the inner bottom of the waste trough 8, the vibration motor 15 is fixed to the middle of the inside of the triangular plate 9 by bolts, and the lower left end of the flotation tank 1 is fixedly connected to the output end of the pressure vessel tank 2 through a connecting pipe. The discharge pipe 10 is fixed to the front and back sides of the bottom of the waste trough 8 by bolts. The first motor 5 drives the long threaded rod 13 to rotate, so that the moving block 14 outside the long threaded rod 13 drives the connecting rod 6 and the hollow bar 7 extending out of the hollow shell 4 to slide. Therefore, the first motor 5 drives the hollow bar 7 and the scraper bar 16 to slide from left to right on the top of the flotation tank 1. The scraper bar 16 contacts the scum on the top of the flotation tank 1 and scrapes the scum into the waste trough 8 located at the top of the right end of the flotation tank 1, which can effectively avoid manual scraping of the scum and reduce the labor intensity of manual scraping of the scum to a certain extent.

[0031] Furthermore, the lower left end of the flotation tank 1 is fixedly connected to the output end of the pressure vessel tank 2 through a connecting pipe, the long threaded rod 13 is rotatably connected to the middle of the inner front side of the hollow shell 4 at the end away from the first motor 5, the outer side of the moving block 14 contacts the inner wall of the hollow shell 4, and the upper middle of the inner part of the hollow shell 4 is slidably connected to the outer side of the lower end of the connecting rod 6.

[0032] Furthermore, there are two hollow shells 4, and the two hollow shells 4 are respectively arranged at the top positions of the left and right ends of the flotation tank 1. The top of the hollow shell 4 is provided with a slide groove extending from left to right, and the width of the slide groove matches the bottom cross-sectional diameter of the connecting rod 6.

[0033] Furthermore, the length of the hollow bar 7 matches the length of the front and rear sides of the outer side of the flotation pool 1, and the length of the scraper bar 16 matches the length of the front and rear sides of the inner side of the flotation pool 1, so that the scraper bar 16 can scrape the floating scum on the flotation pool 1 from left to right at one time, avoiding the situation where the scraping is not complete and needs to be scraped again. The longitudinal section of the scraper bar 16 is an inverted triangle.

[0034] Furthermore, the longitudinal section of the triangular plate 9 is in the shape of an isosceles triangle, and the height of the triangular plate 9 is lower than the height of the inner left side of the waste tank 8. Through grooves are provided at the bottom of the inner front and rear ends of the waste tank 8, and the through grooves are communicated with the top of the discharge pipe 10. In this way, the scum can quickly flow to the top of the front and rear sides of the triangular plate 9 and be discharged from the discharge pipe 10, thereby preventing the scum from accumulating in the waste tank 8 for a long time and becoming difficult to clean.

[0035] During operation, the flocculated tobacco wastewater is injected into the flotation tank 1 through the pressure vessel tank 2. After the flotation tank 1 is filled with tobacco wastewater, it is left for a period of time to allow the scum in the tobacco wastewater to float upward. Then, according to the thickness of the scum floating on the water surface, the first motor 5 and the vibration motor 15 are turned on. The first motor 5 drives the long threaded rod 13 inside the hollow shell 4 to rotate, and the moving block 14 outside the long threaded rod 13 drives the hollow bar 7 and the scraper bar 16 at the bottom of the hollow bar 7 to move horizontally from the left side to the right side of the flotation tank 1 through the connecting rod 6. At this time, the scraper bar 16 scrapes the scum on the water surface of the flotation tank 1 into the waste tank 8 on the right side of the flotation tank 1. After the scum enters the waste tank 8, it directly contacts the top of the triangular plate 9. Under the vibration of the vibration motor 15 inside the triangular plate 9, the scum flows along the inclined surface of the top of the triangular plate 9 to the discharge pipe 10 at the bottom of the front and rear sides of the waste tank 8 and is discharged; after the scum is scraped off, the first motor 5 is reversed to let the scraper bar 16 return to the initial position on the left side of the top of the flotation tank 1, and the drainage pump 3 is turned on to pump away the tobacco wastewater in the flotation tank 1.

[0036] Furthermore, a shell 11 is provided in the middle of the top of the hollow bar 7, a second motor 12 is provided at the rear end of the shell 11, a first bevel gear 17 is provided at the output end of the second motor 12, a second bevel gear 18 is meshed at the front lower side of the first bevel gear 17, a short threaded rod 19 is spirally connected inside the second bevel gear 18, the bottom end of the short threaded rod 19 is rotatably connected to the middle of the top of the scraper bar 16, the inner lower middle of the discharge pipe 10 and the inner upper middle of the hollow shell 4 are both in contact with the outer side of the short threaded rod 19, and the bottom of the second bevel gear 18 is rotatably connected to the inner lower middle of the shell 11.

[0037] Among them, the shell 11 is welded in the middle of the top of the hollow bar 7, the second motor 12 is fixed to the rear end of the shell 11 by bolts, the output shaft of the output end of the second motor 12 passes through the inside of the first bevel gear 17 and is welded, the inside of the second bevel gear 18 is penetrated by a short threaded rod 19 and is spirally connected with the internal thread inside the second bevel gear 18, so as to adjust the depth of the scraper bar 16 into the water surface of the flotation tank 1 according to the thickness of the scum floating on the water surface in the flotation tank 1.

[0038] Furthermore, an internal thread is provided on the middle inner wall of the second bevel gear 18, and the pitch of the internal thread on the middle inner wall of the second bevel gear 18 matches the pitch of the surface of the short threaded rod 19 and is spiral. A slider is provided at the bottom of the second bevel gear 18, and an annular groove is provided in the middle of the lower interior of the shell 11, and the slider is in the annular groove and can slide in the annular groove, which can effectively prevent the scraper 16 from penetrating into the flotation tank 1, resulting in the scum not being scraped off all at once due to insufficient depth of entering the water surface. The efficiency of the scraper 16 in scraping off the scum in the flotation tank 1 can be improved to a certain extent.

[0039] In the specific implementation, the position of the scraper bar 16 at the lower part of the housing 11 is adjusted, and the second motor 12 at the rear of the top of the housing 11 is started. The second motor 12 drives the first bevel gear 17 at the output end to rotate, and the first bevel gear 17 then drives the second bevel gear 18 meshed with it at the lower part of the housing 11 to rotate together. At this time, the second bevel gear 18 drives the internal short threaded rod 19 to move. At this time, the scraper bar 16 at the bottom of the short threaded rod 19 moves with the short threaded rod 19 until the bottom of the scraper bar 16 penetrates into the bottom of the floating object and contacts the water surface of the tobacco wastewater, then the second motor 12 is stopped, and then the first motor 5 at the left and right ends of the flotation tank 1 is turned on. The hollow bar 7 and the scraper bar 16 are driven by the first motor 5 to slide from left to right on the top of the flotation tank 1, and the scraper bar 16 contacts the scum on the top of the flotation tank 1, and the scum is scraped into the waste tank 8 at the top of the right end of the flotation tank 1.

[0040] Correspondingly, the present invention also provides a flotation treatment system for treating tobacco wastewater, comprising the above-mentioned flotation and sedimentation separation device.

[0041] Furthermore, if Figure 5 As shown, the flotation treatment system for treating tobacco wastewater also includes a dissolved air production unit 20, a dosing reaction area 21, a dissolved air release area 22, a flotation and sedimentation separation area 23, a clean water collection area 24, a scum collection area 25, a flow meter 26, a COD and ammonia nitrogen index sampling instrument 27 and a collection information transmission control center 28, wherein the flotation and sedimentation separation device is located in the flotation and sedimentation separation area 23.

[0042] At work, Figure 5As shown, the dissolved air manufacturing unit 20 first needs to manufacture dissolved air, which is the basis of flotation treatment. Bubbles are generated by the dissolved air manufacturing unit 20 for the subsequent flotation process. The dosing reaction zone 21 is where chemicals such as flocculants need to be added before the wastewater enters the flotation equipment to condense the scum and pollutants in the wastewater into flocs. The dissolved air release zone 22 mixes the manufactured dissolved air with the wastewater, and the dissolved air is released in the wastewater to form fine bubbles, which are combined with the flocs. The flotation and sedimentation separation zone 23 is where the flocs are combined with the bubbles to form scum, which floats to the water surface and is then separated. After flotation and sedimentation separation in the flotation and sedimentation separation area 23, the clean water is collected in the clean water collection area 24, and the floated scum is collected in the scum collection area 25, which can be further processed or disposed of later. In the whole process, the flow meter 26 is used to monitor and control the flow of wastewater. During the treatment process, the COD and ammonia nitrogen index sampling instrument 27 is required to regularly sample and detect indicators such as chemical oxygen demand and ammonia nitrogen to ensure the treatment effect. All collected data are transmitted to the collection information transmission control center 28 for real-time monitoring and management.

[0043] The flotation and sedimentation separation device and flotation treatment system for treating tobacco wastewater provided by the embodiment of the present invention drive the hollow bar and the scraper bar to slide from left to right on the top of the flotation tank through the first motor. The scraper bar contacts the scum on the top of the flotation tank and scrapes the scum into the waste trough located at the top of the right end surface of the flotation tank, which can effectively avoid manual scraping of the scum and reduce the labor intensity of manual scraping of the scum to a certain extent. At the same time, after the scum enters the waste trough, it falls on the top of the triangular plate with an inclined surface. With the vibration motor inside the triangular plate, the scum can quickly flow to the top of the front and rear sides of the triangular plate and be discharged from the discharge pipe, avoiding the situation where the scum accumulates in the waste trough for a long time and is difficult to clean.

[0044] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0045] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A flotation and sedimentation separation device for treating tobacco wastewater, characterized in that: include: An air flotation pool and a pressure vessel tank, a drainage pump is arranged in the middle of the right end of the air flotation pool through a connecting pipe, a hollow shell is arranged on the top of the front and rear ends of the air flotation pool, a first motor is arranged on the right end of each of the hollow shells, a long threaded rod is arranged at the output end of each of the first motors, the outer spirals of each of the long threaded rods are respectively connected to moving blocks, the tops of each of the moving blocks are respectively fixedly connected to connecting rods, the two connecting rods are fixedly connected at the end away from the moving blocks through a hollow bar, a scraper strip is arranged at the lower end of the hollow bar, a waste trough is arranged on the top of the right end of the air flotation pool, a triangular plate is arranged in the middle of the inner lower side of the waste trough, a vibration motor is arranged in the middle of the inside of the triangular plate, and discharge pipes are arranged on the front and rear sides of the bottom of the waste trough.

2. The flotation and sedimentation separation device for treating tobacco wastewater according to claim 1, characterized in that: The lower left end of the flotation tank is fixedly connected to the output end of the pressure vessel tank through a connecting pipe, the long threaded rod is rotatably connected to the middle of the inner front side of the hollow shell at the end away from the first motor, the outer side of the moving block contacts the inner wall of the hollow shell, and the upper middle of the inner part of the hollow shell is slidably connected to the outer side of the lower end of the connecting rod.

3. The flotation and sedimentation separation device for treating tobacco wastewater according to claim 1, characterized in that: There are two hollow shells, and the two hollow shells are respectively arranged at the top positions of the left and right ends of the flotation tank. The top of the hollow shell is provided with a slide extending from left to right, and the width of the slide matches the bottom cross-sectional diameter of the connecting rod.

4. The flotation and sedimentation separation device for treating tobacco wastewater according to claim 1, characterized in that: The length of the hollow strip matches the length of the front and rear sides of the outer side of the flotation pool, and the length of the scraper strip matches the length of the front and rear sides of the inner side of the flotation pool. The longitudinal section of the scraper strip is an inverted triangle.

5. The flotation and sedimentation separation device for treating tobacco wastewater according to claim 1, characterized in that: The longitudinal section of the triangular plate is an isosceles triangle, and the height of the triangular plate is lower than the height of the inner left side of the waste trough. Through grooves are provided at the bottom of the front and rear ends of the inner side of the waste trough, and the through grooves are communicated with the top end of the discharge pipe.

6. The flotation and sedimentation separation device for treating tobacco wastewater according to claim 1, characterized in that: A shell is provided in the middle of the top of the hollow bar, a second motor is provided at the rear end of the shell, a first bevel gear is provided at the output end of the second motor, a second bevel gear is meshed with the front lower side of the first bevel gear, a short threaded rod is spirally connected to the inside of the second bevel gear, the bottom end of the short threaded rod is rotatably connected to the middle of the top of the scraper bar, the inner lower middle of the discharge pipe and the inner upper middle of the hollow shell are both in contact with the outer side of the short threaded rod, and the bottom of the second bevel gear is rotatably connected to the inner lower middle of the shell.

7. The flotation and sedimentation separation device for treating tobacco wastewater according to claim 6, characterized in that: An internal thread is provided on the middle inner wall of the second bevel gear, and the pitch of the internal thread on the middle inner wall of the second bevel gear matches the pitch of the surface of the short threaded rod and is spiral. A slider is provided at the bottom of the second bevel gear, and an annular groove is provided in the middle of the lower interior of the shell, and the slider is in the annular groove and can slide in the annular groove.

8. An air flotation treatment system for treating tobacco wastewater, characterized in that: A flotation and sedimentation separation device comprising any one of claims 1-7.

9. The air flotation treatment system for treating tobacco wastewater according to claim 8, characterized in that: It also includes a dissolved gas production unit, a dosing reaction area, a dissolved gas release area, a clean water collection area, a slag collection area, a flow meter, COD and ammonia nitrogen index sampling instruments and a collection information transmission control center.

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