High instant gas flotation equipment with inclined plate precipitation function

Abstract

The invention relates to the technical field of water treatment equipment, in particular to high instant gas flotation equipment with an inclined plate precipitation function, which comprises a tank body, a water distribution pipe, a plurality of water distribution heads, a plurality of precipitation tanks and a silt discharge pipe, the plurality of sedimentation tanks are arranged at the bottom of the tank body and below the plurality of water distribution heads, the silt discharge pipe comprises a main discharge pipe and a plurality of branch discharge pipes communicated with the main discharge pipe, the plurality of branch discharge pipes are respectively communicated with the plurality of sedimentation tanks, a fence is arranged at the top of each sedimentation tank, the water distribution pipes penetrate through the fences, and the water distribution heads are located in the fences; a cover body is arranged at the top of the fence in a lifting mode, a telescopic cylinder is connected between the cover body and the fence, a filter plate is arranged at the top of the cover body, a baffle is erected at the top of the water distribution head and located between the filter plate and the water distribution head, and a plugging block is installed on the baffle in a floating mode.

Description

Technical Field

[0001] The invention relates to the technical field of water treatment equipment, in particular to a high-speed dissolved air flotation equipment with an inclined plate sedimentation function. Background Art

[0002] The flotation device introduces air into the water in the form of tiny bubbles, so that the tiny bubbles adhere to the particles suspended in the water, forming a water-air-particle three-phase mixed system. After the particles adhere to the bubbles, their density is less than that of water, so they float to the surface of the water, forming a scum layer and are separated from the water. When there are still larger particles of impurities in the water, they need to be precipitated before flotation. In order to improve the efficiency of water treatment, flotation equipment with precipitation function has appeared.

[0003] For example, a flotation clarification treatment equipment disclosed in the patent with publication number CN202208653U includes a flotation tank body, a sludge scraper, an inclined plate, a sludge bucket, a scum discharge trough, a water distribution pipe, a sludge discharge pipe and a clean water pipe. The inclined plates are arranged in parallel at equal intervals in the flotation tank body and form an angle α with the horizontal plane of the flotation tank body. The inclined plate has an internal space, and a pipe hole is opened at the lower part of the inclined plate. The pipe hole is connected to the clean water pipe through a connecting pipe. A water distribution head is provided on the water distribution pipe, and the water distribution head is arranged at intervals below the space between the inclined plates. The above-mentioned prior art can realize the integration of sedimentation and flotation, so that the sedimentation process and the flotation process will not interfere with each other.

[0004] However, since the sedimentation tank is always connected to the pool body, if the sludge is discharged while the equipment is in working condition, it will cause disorder in the internal workflow of the equipment and affect the water treatment effect. Therefore, each time the sludge in the sedimentation tank is discharged, it is necessary to wait for the equipment to shut down, which may easily lead to excessive sludge accumulation and inability to be discharged in time. Summary of the invention

[0005] In order to discharge the sludge without stopping the machine, and thus discharge the accumulated sludge in time, the present application provides a high-speed dissolved air flotation equipment with an inclined plate sedimentation function.

[0006] The high-speed dissolved air flotation equipment with inclined plate sedimentation function provided by the present invention adopts the following technical solution: A high-speed dissolved air flotation device with inclined plate sedimentation function comprises a tank body, a water distribution pipe, a plurality of water distribution heads, a plurality of sedimentation tanks and a sludge discharge pipe, wherein the water distribution pipe extends into the tank body, a plurality of water distribution heads are connected with the water distribution pipe in the tank body, a plurality of sedimentation tanks are arranged at the bottom of the tank body and below the plurality of water distribution heads, the sludge discharge pipe comprises a main discharge pipe and a plurality of branch discharge pipes connected with the main discharge pipe, the plurality of branch discharge pipes are respectively connected with a plurality of sedimentation tanks, and the branch discharge pipes are provided with discharge valves; a fence is provided on the top of the sedimentation tank, the fence is for the water distribution pipe to pass through, and the water distribution head is located in the fence; a cover body is provided for the top of the fence to be lifted and lowered, a telescopic cylinder is connected between the cover body and the fence, a filter plate is provided on the top of the cover body, a baffle is arranged on the top of the water distribution head, the baffle is located between the filter plate and the water distribution head, a blocking block is floatingly installed on the baffle, and the height of the blocking block is less than the distance between the filter plate and the water distribution head.

[0007] Preferably, the baffle is provided with a mounting hole vertically through it, the blocking block is T-shaped so as to have a large end and a small end, the small end of the blocking block passes upward through the mounting hole, the large end of the blocking block is located below the baffle, the small end of the blocking block is spaced apart from the filter plate in the vertical direction, the cross-section of the small end of the blocking block is larger than the cross-section of the filter plate, the large end of the blocking block is spaced apart from the water distribution head in the vertical direction, the cross-section of the large end of the blocking block is larger than the cross-section of the water distribution head, and the large end of the blocking block abuts against the bottom of the baffle under the action of its own buoyancy.

[0008] Preferably, the blocking block is a hollow structure.

[0009] Preferably, it also includes a plurality of inclined plates, a clean water pipe, a scum collecting device and a scum collecting trough, wherein the plurality of inclined plates are fixedly arranged in the horizontal direction in the pool body, and the plurality of inclined plates are arranged above the plurality of water distribution heads. The clean water pipe includes a main water pipe and a plurality of branch water pipes connected to the main water pipe, and the plurality of branch water pipes are arranged in the pool body and connected to the bottoms of the plurality of inclined plates. The scum collecting device is arranged at the top of the pool body, and the scum collecting trough is arranged at the rear end of the top of the pool body. The scum suspended on the water surface is scraped into the scum collecting trough by the scum collecting device.

[0010] Preferably, a groove is formed upwardly at the bottom of the cover body, and the top of the enclosure is embedded in the groove.

[0011] Preferably, the telescopic cylinder is a pneumatic cylinder.

[0012] Preferably, a sensor for sensing sludge accumulation is provided in the sedimentation tank, the sensor is connected to a controller, the controller is connected to the telescopic cylinder and the discharge valve, when the sensor senses that the accumulation amount of sludge exceeds a threshold value, the controller controls the telescopic cylinder and the discharge valve to operate.

[0013] Preferably, the sensor is a pressure sensor, and the pressure sensor is arranged at the bottom of the sedimentation tank.

[0014] Preferably, a first sealing ring is embedded in the position of the enclosure for the water distribution pipe to pass through, and a second sealing ring is sleeved on the top of the enclosure.

[0015] Preferably, a first sealing gasket is laid on the small end of the blocking block, and a second sealing gasket is laid on the large end of the blocking block.

[0016] The beneficial effects of the present invention are: When there is a lot of sludge accumulated in the sedimentation tank, the telescopic cylinder can be used to control the hood to descend. During the descent of the hood, it contacts the blocking block, and the hood then drives the blocking block to descend until the upper and lower ends of the blocking block simultaneously block the filter plate and water distribution head of the hood. At this time, not only the sedimentation tank that needs to be discharged is isolated from the tank body, but also the release of the corresponding water distribution head is stopped, avoiding the situation that the discharge of sludge at this time will cause working disorder in the tank body, so that the sludge can be discharged without stopping the machine, and the accumulated sludge can be discharged in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a brief schematic diagram of a high-speed dissolved air flotation device in an embodiment of the present application; Figure 2 is a brief schematic diagram of the inclined plate in the embodiment of the present application; Figure 3 yes Figure 1 A partial enlarged view of .

[0018] Explanation of the reference numerals in the accompanying drawings: 1. Tank body; 21. Water distribution pipe; 22. Raw water inlet; 23. Dissolved air water inlet; 31. Water distribution head; 32. Frame; 33. Baffle; 34. Block; 41. Sedimentation tank; 42. Enclosure; 43. Cover; 44. Filter plate; 45. Groove; 46. Telescopic cylinder; 47. Pressure sensor; 5. Sludge discharge pipe; 51. Main discharge pipe; 52. Branch discharge pipe; 6. Inclined plate; 61. Long plate; 62. Short plate; 63. Bottom plate; 64. Side plate; 7. Clean water pipe; 71. Main water pipe; 72. Branch water pipe; 8. Scum collecting device; 9. Slag collecting tank. DETAILED DESCRIPTION

[0019] The following will be combined Figure 1-Figure 3 The present invention is further illustrated by the following embodiments.

[0020] This embodiment discloses a high-speed dissolved air flotation device with an inclined plate sedimentation function.

[0021] Reference Figure 1 The high-speed dissolved air flotation equipment with inclined plate sedimentation function includes a tank body 1, a water distribution pipe 21, a water distribution head 31, a sedimentation tank 41, a sludge discharge pipe 5, an inclined plate 6, a clean water pipe 7, a scum collecting device 8 and a slag collecting tank 9.

[0022] Reference Figure 1 The water distribution pipe 21 extends from the front end of the tank body 1 into the tank body 1. The water distribution pipe 21 is arranged horizontally. The inlet of the water distribution pipe 21 is located outside the tank body 1. The inlet of the water distribution pipe 21 is sequentially provided with a raw water inlet 22 and a dissolved air water inlet 23 along the entry direction. The sewage to be treated enters the water distribution pipe 21 through the raw water inlet 22, and the water with tiny bubbles enters the water distribution pipe 21 through the dissolved air water inlet 23. The sewage to be treated and the dissolved air water are fully mixed in the water distribution pipe 21. There are multiple water distribution heads 31, which are arranged at the top of the water distribution pipe 21 and are evenly spaced along the length direction of the water distribution pipe 21. The water distribution heads 31 are connected to the water distribution pipe 21. The multiple water distribution heads 31 are all located in the tank body 1. The water in the water distribution pipe 21 enters the tank body 1 through the water distribution heads 31 for subsequent separation.

[0023] Reference Figure 1 , there are multiple sedimentation tanks 41, and multiple sedimentation tanks 41 are opened at the bottom of the pool body 1. The sedimentation tanks 41 are used to receive larger particles of impurities in the pool body 1. In this embodiment, multiple sedimentation tanks 41 are arranged one by one below multiple water distribution heads 31. Specifically, the longitudinal cross-section of the sedimentation tank 41 is a trapezoidal surface with a larger top and a smaller bottom, so that the sludge after precipitation is more concentrated and convenient for subsequent discharge. The sludge discharge pipe 5 includes a main discharge pipe 51 and multiple branch discharge pipes 52. The tops of the multiple branch discharge pipes 52 are connected to the bottoms of the multiple sedimentation tanks 41 one by one, and the bottoms are all connected to the main discharge pipe 51, so that the sludge in the multiple sedimentation tanks 41 can eventually be discharged through the sludge discharge pipe 5. In addition, the multiple branch discharge pipes 52 of the sludge discharge pipe 5 are all provided with discharge valves, and the discharge valves are used to control the opening and closing of the branch discharge pipes 52 of the sludge discharge pipe 5.

[0024] Reference Figure 1 and Figure 2, there are multiple inclined plates 6, and the multiple inclined plates 6 are fixedly arranged in the pool body 1 along the horizontal direction. In this embodiment, the multiple inclined plates 6 are arranged one by one above the multiple water distribution heads 31. Specifically, the inclined plate 6 includes a long plate 61, a short plate 62, a bottom plate 63 and two side plates 64, wherein the long plate 61, the short plate 62 and the two side plates 64 are connected end to end to form a frame-like structure, and the bottom is coplanar, and the bottom plate 63 is fixedly connected to the bottom of the frame-like structure, so that the inclined plate 6 forms a box-like structure with an open upper end and a closed lower end. In addition, when the inclined plate 6 is set in the pool body 1, the short plate 62 faces the front end of the pool body 1, and the long plate 61 faces the rear end of the pool body 1. Furthermore, the clean water pipe 7 includes a main water pipe 71 and a plurality of branch water pipes 72, the plurality of branch water pipes 72 are arranged in the tank body 1 and connected to the bottom of the plurality of inclined plates 6 one by one, the main water pipe 71 extends from the rear end of the tank body 1 into the tank body 1, the main water pipe 71 is arranged horizontally, the plurality of branch water pipes 72 are connected to the main water pipe 71, and the outlet of the main water pipe 71 is arranged outside the tank body 1 and serves as the outlet of the clean water pipe 7. After the sewage and the dissolved air water are mixed and released through the water distribution head 31, the bubbles in the dissolved air water adhere to the impurities with smaller particles to form scum suspended on the water surface, and based on the two movements of the larger particles settling downward and the smaller particles suspending upward, the water discharged from the inclined plate 6 is clean water, realizing the integration of sedimentation and flotation, and the water treatment process in which the sedimentation process and the flotation process do not interfere with each other. In addition, the scum collecting device 8 is arranged at the top of the tank body 1, and the scum collecting tank 9 is arranged at the rear end of the top of the tank body 1, and the scum suspended on the water surface is scraped into the scum collecting tank 9 by the scum collecting device 8.

[0025] Reference Figure 1 and Figure 3 , a plurality of enclosures 42 are provided at the bottom of the pool body 1, the upper and lower ends of the enclosures 42 are connected and closed on all sides, and the plurality of enclosures 42 are arranged one by one on the top of the plurality of sedimentation tanks 41, and the cross-section of the enclosures 42 is larger than the top surface of the sedimentation tank 41, so that the sedimentation tank 41 can be completely enclosed within the enclosures 42. Moreover, the plurality of enclosures 42 are all passed through by the water distribution pipe 21, and the plurality of water distribution heads 31 are respectively located one by one in the plurality of enclosures 42. Further, a cover body 43 is provided on the top of the enclosure 42, and the upper edge of the enclosure 42 and the lower edge of the cover body 43 overlap in the vertical direction, so that the cover body 43 covers the enclosure 42. A filter plate 44 is provided on the top of the cover body 43, and the filter plate 44 allows smaller particles to pass through. Through this arrangement, the water released by the water distribution head 31 can be filtered at the top of the cover body 43, so that larger particles of impurities are fully precipitated in the sedimentation tank 41. In addition, a plurality of racks 32 are arranged on the outer side of the top of the water distribution head 31, and the water distribution head 31 is connected to a baffle 33 through the plurality of racks 32, and the baffle 33 is located above the water distribution head 31. By arranging the baffle 33 above the water distribution head 31, the path of the water released by the water distribution head 31 to reach the filter plate 44 can be extended, and in this process, larger particles of impurities have more opportunities to adhere to each other and are easy to precipitate, thereby reducing the filtering burden of the filter plate 44.

[0026] Reference Figure 1 and Figure 3 , the cover body 43 is arranged on the top of the enclosure 42 in a manner that it can be lifted and lowered. In order to realize that the cover body 43 can be lifted and lowered relative to the enclosure 42, a groove 45 is opened upward at the bottom of the cover body 43, and the top of the enclosure 42 is embedded in the groove 45. In addition, a telescopic cylinder 46 is arranged on the outside of the cover body 43. The telescopic cylinder 46 includes a cylinder body and a telescopic rod. The cylinder body of the telescopic cylinder 46 is fixedly arranged on the outside of the cover body 43. The telescopic rod extends from the bottom of the cylinder body and is fixedly connected to the outside of the enclosure 42, so that the cover body 43 can be lifted and lowered relative to the enclosure 42 by the telescopic cylinder 46. In this embodiment, the telescopic cylinder 46 is a pneumatic cylinder. In other embodiments, a hydraulic cylinder or an electric cylinder can also be selected as long as the sealing performance or insulation performance is ensured. Further, the baffle 33 is provided with a mounting hole vertically through, and a blocking block 34 is installed in the mounting hole. The blocking block 34 is T-shaped to have a large end and a small end. The small end of the blocking block 34 passes through the mounting hole upward, and the large end of the blocking block 34 is located below the baffle 33. Furthermore, the small end of the blocking block 34 is spaced apart from the filter plate 44 in the vertical direction, and the cross section of the small end of the blocking block 34 is larger than the cross section of the filter plate 44. The large end of the blocking block 34 is spaced apart from the water distribution head 31 in the vertical direction, and the cross section of the large end of the blocking block 34 is larger than the cross section of the water distribution head 31. In particular, the blocking block 34 is made of a low-density material or a hollow structure, as long as the large end of the blocking block 34 abuts against the bottom of the baffle 33 under the action of its own buoyancy. When the cover body 43 descends, the small end of the blocking block 34 blocks the filter plate 44, and the large end of the blocking block 34 blocks the water distribution head 31. Through the above arrangement, when a lot of sludge accumulates in the sedimentation tank 41, the telescopic cylinder 46 can be used to control the cover body 43 to descend. During the descent of the cover body 43, it contacts the blocking block 34, and the cover body 43 drives the blocking block 34 to descend until the upper and lower ends of the blocking block 34 simultaneously block the filter plate 44 and the water distribution head 31 of the cover body 43. At this time, not only the sedimentation tank 41 that needs to be discharged is isolated from the pool body 1, but also the release of the corresponding water distribution head 31 is stopped, so as to avoid the situation that the discharge of sludge at this time will cause work disorder in the pool body 1, so that the sludge can be discharged without stopping the machine, and the accumulated sludge can be discharged in time.

[0027] Reference Figure 1 and Figure 3 A sensor for sensing the accumulation of sludge is provided in the sedimentation tank 41, and the sensor is connected to a controller, and the controller is connected to the telescopic cylinder 46 and the discharge valve. When the sensor senses that the accumulation of sludge exceeds a threshold value, the controller controls the telescopic cylinder 46 and the discharge valve to work, so as to discharge the accumulated sludge in time. In this embodiment, the sensor is a pressure sensor 47, and the pressure sensor 47 is provided at the bottom of the sedimentation tank 41. In other embodiments, an ultrasonic sensor or the like may also be provided, as long as the monitoring of the accumulation of sludge can be realized.

[0028] Reference Figure 1 and Figure 3 A first sealing ring is embedded in the position where the water distribution pipe 21 passes through the enclosure 42, a second sealing ring is sleeved on the top of the enclosure 42, a first sealing gasket is laid on the small end of the blocking block 34, and a second sealing gasket is laid on the large end of the blocking block 34 to ensure the sealing performance at all locations.

[0029] The above are all preferred embodiments of the present invention, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A high-speed dissolved air flotation equipment with inclined plate sedimentation function, characterized in that: The invention comprises a tank body (1), a water distribution pipe (21), a plurality of water distribution heads (31), a plurality of sedimentation tanks (41) and a sludge discharge pipe (5), wherein the water distribution pipe (21) extends into the tank body (1), the plurality of water distribution heads (31) are connected to the water distribution pipe (21) in the tank body (1), the plurality of sedimentation tanks (41) are arranged at the bottom of the tank body (1) and below the plurality of water distribution heads (31), the sludge discharge pipe (5) comprises a main discharge pipe (51) and a plurality of branch discharge pipes (52) connected to the main discharge pipe (51), the plurality of branch discharge pipes (52) are respectively connected to the plurality of sedimentation tanks (41), and the branch discharge pipes (52) are provided with discharge valves; the sedimentation tanks (41) are provided with a discharge valve and a discharge valve is provided on the discharge pipe. 1) is provided with an enclosure (42) at the top, the enclosure (42) is for the water distribution pipe (21) to pass through, and the water distribution head (31) is located in the enclosure (42); a cover body (43) is provided at the top of the enclosure (42) for lifting, a telescopic cylinder (46) is connected between the cover body (43) and the enclosure (42), a filter plate (44) is provided at the top of the cover body (43), a baffle (33) is mounted on the top of the water distribution head (31), the baffle (33) is located between the filter plate (44) and the water distribution head (31), a blocking block (34) is floatingly installed on the baffle (33), and the height of the blocking block (34) is less than the distance between the filter plate (44) and the water distribution head (31).

2. The high-speed dissolved air flotation equipment with inclined plate sedimentation function according to claim 1, characterized in that: The baffle (33) is provided with a mounting hole extending vertically therethrough. The blocking block (34) is T-shaped and has a large end and a small end. The small end of the blocking block (34) passes through the mounting hole upward. The large end of the blocking block (34) is located below the baffle (33). The small end of the blocking block (34) is spaced apart from the filter plate (44) in the vertical direction. The cross section of the small end of the blocking block (34) is larger than the cross section of the filter plate (44). The large end of the blocking block (34) is spaced apart from the water distribution head (31) in the vertical direction. The cross section of the large end of the blocking block (34) is larger than the cross section of the water distribution head (31). Under the action of its own buoyancy, the large end of the blocking block (34) abuts against the bottom of the baffle (33).

3. The high-speed dissolved air flotation equipment with inclined plate sedimentation function according to claim 2, characterized in that: The blocking block (34) is a hollow structure.

4. The high-speed dissolved air flotation equipment with inclined plate sedimentation function according to claim 1, characterized in that: The invention also comprises a plurality of inclined plates (6), a clean water pipe (7), a scum collecting device (8) and a scum collecting trough (9), wherein the plurality of inclined plates (6) are fixedly arranged in the horizontal direction in the tank body (1), the plurality of inclined plates (6) are arranged above the plurality of water distribution heads (31), the clean water pipe (7) comprises a main water pipe (71) and a plurality of branch water pipes (72) connected to the main water pipe (71), the plurality of branch water pipes (72) are arranged in the tank body (1) and connected to the bottoms of the plurality of inclined plates (6), the scum collecting device (8) is arranged at the top of the tank body (1), the scum collecting trough (9) is arranged at the rear end of the top of the tank body (1), and the scum suspended on the water surface is scraped into the scum collecting trough (9) through the scum collecting device (8).

5. The high-speed dissolved air flotation equipment with inclined plate sedimentation function according to claim 1, characterized in that: The bottom of the cover body (43) is provided with a groove (45) facing upward, and the top of the enclosure (42) is embedded in the groove (45).

6. The high-speed dissolved air flotation equipment with inclined plate sedimentation function according to claim 1, characterized in that: The telescopic cylinder (46) is a pneumatic cylinder.

7. The high-speed dissolved air flotation equipment with inclined plate sedimentation function according to claim 1, characterized in that: A sensor for sensing the accumulation of sludge is arranged in the sedimentation tank (41), the sensor is connected to a controller, the controller is connected to the telescopic cylinder (46) and the discharge valve, and when the sensor senses that the accumulation of sludge exceeds a threshold value, the controller controls the telescopic cylinder (46) and the discharge valve to operate.

8. The high-speed dissolved air flotation equipment with inclined plate sedimentation function according to claim 7, characterized in that: The sensor is a pressure sensor (47), and the pressure sensor (47) is arranged at the bottom of the sedimentation tank (41).

9. The high-speed dissolved air flotation equipment with inclined plate sedimentation function according to claim 5, characterized in that: A first sealing ring is embedded in the position of the enclosure (42) through which the water distribution pipe (21) passes, and a second sealing ring is sleeved on the top of the enclosure (42).

10. The high-speed dissolved air flotation equipment with inclined plate sedimentation function according to claim 2, characterized in that: A first sealing gasket is laid on the small end of the blocking block (34), and a second sealing gasket is laid on the large end of the blocking block (34).

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