An automatic aerator for biological waste liquid pool

Abstract

The present invention relates to the field of aeration equipment for waste liquid pools, and in particular to an automatic aerator for biological waste liquid pools, including an aeration pipe and a liquid baffle plate. The automatic aerator for biological waste liquid pools of the present invention is provided with a liquid baffle plate and a collecting plate above the aeration pipe. After the waste liquid is sprayed out from the aeration pipe in combination with oxygen, the first screen on the liquid baffle plate intercepts most of the sludge in the waste liquid, and only the sludge contained in the foam passes through the first screen with the waste liquid into the liquid baffle plate and flows to the collecting plate, allowing the small-sized aged sludge to settle on the collecting plate. At the same time, the large-sized sludge in the foam flowing into the liquid baffle plate is sprayed by the first spray head, reducing the waste of large-sized sludge settling on the collecting plate and being unable to flow back. The technical disadvantages of slow foam defoaming speed of the aged sludge and polluting the surrounding environment after overflowing are overcome.

Description

Technical Field

[0001] The invention relates to the field of waste liquid pool aeration equipment, in particular to an automatic aerator for a biological waste liquid pool. Background Art

[0002] The aeration device of the biological waste liquid pool is mainly used to transfer oxygen in the air to the liquid in the pool to supply the oxygen required for the metabolism of aerobic microorganisms, and to fully and evenly mix the water in the pool to achieve the purpose of biological treatment. The aeration device transports air to the bottom of the pool through the aeration pipe to form bubbles of different sizes. The bubbles rise and burst on the liquid surface to achieve aeration. When a large amount of sludge is mixed in the bubbles, a large number of foams will be generated after the bubbles burst, especially the sludge that has stayed in the waste liquid pool for a long time will gradually age. The flocculation ability of these aged sludges becomes poor and the size is generally small, resulting in a slower defoaming speed of the foam produced by the aged sludge, which eventually leads to more and more slow-defoaming foams on the liquid surface of the waste liquid pool, and eventually overflows from the waste liquid pool to pollute the surrounding environment. The foam produced by the aged sludge also contains a large amount of harmful gases, affecting the ambient air quality. Summary of the invention

[0003] In order to overcome the disadvantages that the foam generated by the aged sludge has a slow defoaming speed and will pollute the surrounding environment after overflowing, the present invention provides an automatic aerator for a biological waste liquid pool.

[0004] The invention discloses an automatic aerator for a biological waste liquid pool, comprising a main fixed frame, an aeration pipe, a liquid baffle plate, a first screen, a collecting plate and a second screen; the main fixed frame is fixedly connected with an aeration pipe; the aeration pipe is connected with a plurality of liquid inlets; the main fixed frame is fixedly connected with a liquid baffle plate suspended above a liquid outlet end of the aeration pipe; a plurality of first channel structures are provided on the liquid baffle plate; a first screen is fixedly connected in the first channel structure of the liquid baffle plate, and the mesh size of the first screen is larger than the particle diameter of the sludge; a flow limiting baffle ring structure is provided at the bottom of the liquid baffle plate; a collecting plate is fixedly connected to the outer side of the liquid baffle plate; the liquid baffle plate and the collecting plate are both located above the liquid surface of the installed waste liquid pool; a plurality of second channel structures are provided on the collecting plate; a second screen is fixedly connected in the second channel structure of the collecting plate, and the mesh size of the second screen is smaller than the particle diameter of the sludge.

[0005] Furthermore, a plurality of flow-guiding thread structures are arranged in the aeration pipe.

[0006] Furthermore, each liquid inlet of the aeration pipe is provided with a plurality of cutting strip structures.

[0007] Furthermore, the liquid baffle is configured as a conical bucket-shaped structure with a middle portion contracted downward.

[0008] Furthermore, a vacuum hood is fixedly connected to the liquid baffle plate; the vacuum hood is provided with a plurality of liquid outlet holes.

[0009] Furthermore, a first annular tube is fixedly connected to the exhaust hood; and a plurality of first spray heads are connected to the first annular tube.

[0010] Furthermore, a baffle ring is fixedly connected to the liquid baffle plate; a plurality of third channel structures are opened on the baffle ring; a third screen is fixedly connected to the third channel of the baffle ring, the mesh size of the third screen is smaller than the mesh size of the first screen, and the mesh size of the third screen is larger than the mesh size of the second screen.

[0011] Furthermore, an external fixing frame is fixedly connected to the main fixing frame; a second annular tube is fixedly connected to the external fixing frame; and a plurality of second spray heads are connected to the second annular tube.

[0012] Furthermore, a height-limiting retaining ring structure is provided on the top of the retaining edge structure of the collecting plate to prevent the foam from overflowing outwards.

[0013] Furthermore, a plurality of foam liquid level sensors are installed in the height limiting retaining ring structure of the collecting tray.

[0014] The automatic aerator for a biological waste liquid pool of the present invention is provided with a liquid baffle plate and a collecting tray above an aeration pipe. After the waste liquid is sprayed out from the aeration pipe in combination with oxygen, most of the sludge in the waste liquid is intercepted by a first screen on the liquid baffle plate, and only the sludge contained in the foam is allowed to pass through the first screen with the waste liquid into the liquid baffle plate and flow to the collecting tray, so that small-sized aged sludge is settled on the collecting tray. At the same time, large-sized sludge in the foam flowing into the liquid baffle plate is sprayed by a first spray head, so as to reduce the waste of large-sized sludge settling on the collecting tray and being unable to flow back. The automatic aerator for a biological waste liquid pool of the present invention overcomes the technical disadvantages that the foam generated by the aged sludge has a slow defoaming speed and the surrounding environment is polluted after overflowing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram for describing the present invention according to an embodiment;

[0016] Figure 2 An enlarged view of region F is provided to describe the present invention according to an embodiment;

[0017] Figure 3 A cross-sectional view of an aeration tube is provided to describe the present invention according to an embodiment;

[0018] Figure 4 A schematic diagram of a collection tray of the present invention is described according to an embodiment;

[0019] Figure 5 A schematic diagram of a liquid baffle of the present invention is described according to an embodiment;

[0020] Figure 6 A schematic diagram of a liquid baffle and a collection tray according to an embodiment of the present invention is described;

[0021] Figure 7 The following is a cross-sectional view of a liquid baffle according to an embodiment of the present invention.

[0022] Figure numbers: 11-main fixing frame, 12-external fixing frame, 2-aeration pipe, 20-liquid inlet, 201-liquid outlet, 21-flow guide thread structure, 22-slitting strip structure, 3-liquid baffle plate, 30-first channel structure, 31-first screen, 32-flow limiting baffle structure, 4-collecting plate, 40-second channel structure, 41-second screen, 42-height limiting baffle structure, 43-foam liquid level sensor, 5-vacuum hood, 50-liquid outlet, 61-first annular tube, 62-first spray head, 7-baffle ring, 70-third channel structure, 71-third screen, 81-second annular tube, 82-second spray head. DETAILED DESCRIPTION

[0023] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0024] Example 1

[0025] An automatic aerator for a biological waste liquid pool, such as Figure 1-Figure 7 As shown, it includes a main fixed frame 11, an aeration pipe 2, a liquid baffle plate 3, a first screen 31, a collection plate 4 and a second screen 41; the aeration pipe 2 is fixedly connected to the main fixed frame 11; the aeration pipe 2 is externally connected to the aeration device; the lower side of the aeration pipe 2 is connected to a plurality of liquid inlets 20; a plurality of flow guide thread structures 21 are arranged in the aeration pipe 2; a plurality of slitting strip structures 22 are respectively arranged in each liquid inlet 20 of the aeration pipe 2; a liquid baffle plate 3 suspended above the liquid outlet end 201 of the aeration pipe 2 is fixedly connected to the main fixed frame 11; a plurality of first channel structures 30 are opened on the liquid baffle plate 3; each first channel structure 30 of the liquid baffle plate 3 A first screen 31 is fixedly connected to each channel structure 30, and the mesh size of the first screen 31 is larger than the particle diameter of the sludge; a flow limiting baffle structure 32 is provided in the bottom edge area of ​​the liquid baffle plate 3; a collecting plate 4 is fixedly connected to the outer side of the liquid baffle plate 3 through a quick-release card block structure, and the collecting plate 4 is surrounded by the outer side of the liquid baffle plate 3; the liquid baffle plate 3 and the collecting plate 4 are both located above the liquid surface of the installed waste liquid pool; a plurality of second channel structures 40 are opened on the collecting plate 4; each second channel structure 40 of the collecting plate 4 is fixedly connected to a second screen 41, and the mesh size of the second screen 41 is smaller than the particle diameter of the sludge.

[0026] like Figure 5 and Figure 7As shown, the liquid baffle plate 3 is configured as a conical bucket-shaped structure with the middle portion contracted downward; an exhaust hood 5 is fixedly connected to the liquid baffle plate 3; the exhaust hood 5 is externally connected to an exhaust gas suction device; a plurality of liquid outlet holes 50 are provided at the lower edge of the exhaust hood 5; a first annular tube 61 is fixedly connected to the exhaust hood 5; the first annular tube 61 is externally connected to a spray liquid delivery device; the first annular tube 61 is connected to a plurality of first spray heads 62 facing the edge area of ​​the liquid baffle plate 3.

[0027] The automatic aerator for a biological waste liquid pool of the present invention is installed in the biological waste liquid pool, and the liquid level of the waste liquid pool is level with the liquid baffle plate 3, and the working steps are as follows.

[0028] The external aeration device continuously delivers air from bottom to top through the aeration pipe 2. At the same time, the waste liquid in the waste liquid pool continuously enters the aeration pipe 2 through the liquid inlet 20 under the action of siphon and flows upward with the air. When the waste liquid flows through the liquid inlet 20, the soft sludge in the waste liquid hits the direction of the cutting strip structure 22 on the liquid inlet 20. The cutting strip structure 22 cuts the sludge into pieces to avoid a large amount of sludge entering the liquid inlet 20 at the same time and causing blockage. The waste liquid and air flow upward in a spiral upward state along the guide thread structure 21 on the inner wall of the aeration pipe 2, so that the waste liquid and the air are fully mixed. The aeration efficiency of the waste liquid is improved, and a large amount of foam will be formed in the waste liquid. During this process, the sludge contained in the foam flows in a spiral upward state with the foam, so that the sludge in the waste liquid continues to accumulate toward the center, and the sludge is flocculated and aggregated into a large-sized state. The aged small-sized sludge is not easy to aggregate with the rest of the normal sludge due to its poor flocculation ability. Only a small amount of aged sludge will be surrounded by the surrounding normal sludge and aggregate. Therefore, the waste liquid sprayed upward from the liquid outlet 201 of the aeration pipe 2 contains large-sized normal sludge and small-sized aged sludge.

[0029] After the waste liquid is sprayed upward from the liquid outlet 201 of the aeration pipe 2, it will be intercepted by the liquid baffle plate 3, so that most of the normal large-sized sludge will be intercepted by the liquid baffle plate 3 and flow toward the flow limiting baffle structure 32 at the edge, and then flow back downward to the bottom of the waste liquid pool, while most of the foam generated by the large-sized sludge and the small-sized sludge will float upward with the waste liquid and pass through the first screen 31 on the side close to the center of the liquid baffle plate 3, and enter between the upper part of the liquid baffle plate 3 and the lower part of the suction port of the exhaust hood 5. At the same time, the external waste gas suction equipment will suck the harmful gas floating on the liquid surface with the foam through the exhaust hood 5. Since the suction port of the exhaust hood 5 is located above the liquid surface of the waste liquid, the waste liquid will not be affected by the suction of the exhaust hood 5. , only harmful gases and a small amount of foam overflowing upwards are sucked away by the exhaust hood 5 to prevent harmful gases from diffusing to the surroundings and affecting the air quality. Then, the foam in the liquid baffle plate 3 flows into the collecting tray 4 with the waste liquid through the liquid outlet hole 50 of the exhaust hood 5. The waste liquid passes through the second screen 41 and leaves the collecting tray 4 and flows back to the waste liquid pool. The aged small-sized sludge in the waste liquid is intercepted by the second screen 41, so that the foam generated by the aged sludge is slowly defoamed on the collecting tray 4, so that the aged small-sized sludge is settled and collected in the collecting tray 4. In the subsequent maintenance work, the staff only needs to regularly remove the collecting tray 4 from the liquid baffle plate 3 to pour out the collected aged small-sized sludge.

[0030] In the process that the foam flows along with the waste liquid through the liquid outlet 50 of the exhaust hood 5 to the collecting plate 4, the external spray liquid conveying equipment sprays the foam in the edge area of ​​the liquid baffle plate 3 with the spray liquid through the first spray head 62 of the first annular tube 61, so that the foam generated by the normal large-sized sludge is sprayed with the spray liquid and the foam is quickly defoamed. The large-sized sludge after defoaming passes downward through the first screen 31 in the edge area of ​​the liquid baffle plate 3 and flows back to the waste liquid pool, so that the normal large-sized sludge can be recycled.

[0031] Example 2

[0032] like Figure 1-Figure 7 As shown, on the basis of Example 1, a retaining ring 7 is fixedly connected to the liquid retaining plate 3 of this embodiment; a plurality of third channel structures 70 are opened on the retaining ring 7; a third screen 71 is fixedly connected to each third channel of the retaining ring 7, and the mesh size of the third screen 71 is smaller than the mesh size of the first screen 31, and the mesh size of the third screen 71 is larger than the mesh size of the second screen 41.

[0033] After the waste liquid that has completed aeration treatment flows upward through the first screen 31 to the top of the liquid baffle plate 3, there is still some foam that flows with the waste liquid through the liquid outlet 50 of the exhaust hood 5 and the third screen 71 of the baffle ring 7 to the collecting tray 4. During this process, the large-sized sludge contained in this part of the foam will be intercepted by the third screen 71 of the baffle ring 7, allowing the large-sized sludge to remain on the liquid baffle plate 3 and receive the spray liquid from the first spray head 62 for spray treatment, and only the small-sized and aged sludge contained in this part of the foam is allowed to pass through the third screen 71 of the baffle ring 7 and then settle in the collecting tray 4, so that the large-sized sludge can be smoothly returned to the waste liquid pool, so that the aerobic microorganisms on the large-sized sludge can continue to purify the wastewater in the waste liquid pool, avoiding the waste of large-sized sludge flowing to the collecting tray 4 with the waste liquid and being unable to flow back.

[0034] Example 3

[0035] like Figure 1-Figure 7 As shown, on the basis of Example 1, an external fixing frame 12 is fixedly connected to the main fixing frame 11 of this embodiment; a second annular tube 81 is fixedly connected to the external fixing frame 12; the second annular tube 81 is externally connected to a defoaming liquid conveying device; the second annular tube 81 is connected to a plurality of second spray heads 82 facing the collecting tray 4; a height limiting retaining ring structure 42 is provided on the top of the retaining edge structure of the collecting tray 4 to prevent the foam from overflowing outward; a plurality of foam liquid level sensors 43 are installed in the height limiting retaining ring structure 42 of the collecting tray 4.

[0036] When the amount of foam entering the collecting tray 4 increases in a short period of time, the foam gradually spreads to the retaining structure around the collecting tray 4 and continues to accumulate upwards, until the foam accumulates in the height limiting retaining ring structure 42 of the collecting tray 4, triggering the foam level sensor 43. The foam level sensor 43 promptly notifies the externally connected defoaming liquid delivery equipment through the circuit system to start working, and the externally connected defoaming liquid delivery equipment sprays the defoaming liquid into the collecting tray 4 through the second spray heads 82 on the second annular tube 81, so as to promptly prevent the foam from continuing to accumulate in the collecting tray 4 and allow the accumulated foam in the collecting tray 4 to dissipate quickly, thereby reducing the phenomenon of foam overflowing outwards.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. An automatic aerator for a biological waste liquid pool, comprising: a main fixed frame (11); an aeration pipe (2) fixedly connected to the main fixed frame (11); the aeration pipe (2) connected to a plurality of liquid inlets (20); Its characteristics are: The liquid retaining plate (3) is also provided. The main fixed frame (11) is fixedly connected to the liquid retaining plate (3) suspended above the liquid outlet end (201) of the aeration pipe (2). The liquid retaining plate (3) is provided with a plurality of first channel structures (30). The first channel structure (30) of the liquid retaining plate (3) is fixedly connected to a first screen (31), and the mesh size of the first screen (31) is larger than the particle diameter of the sludge. The bottom of the liquid retaining plate (3) is provided with a flow limiting retaining ring structure (32). The outer side of the liquid retaining plate (3) is fixedly connected to a collecting plate (4). The liquid retaining plate (3) and the collecting plate (4) are both located above the liquid surface of the installed waste liquid pool. The collecting plate (4) is provided with a plurality of second channel structures (40). The second channel structure (40) of the collecting plate (4) is fixedly connected to a second screen (41), and the mesh size of the second screen (41) is smaller than the particle diameter of the sludge. A plurality of flow-guiding thread structures (21) are provided in the aeration pipe (2); A plurality of split strip structures (22) are respectively provided in each liquid inlet (20) of the aeration pipe (2); The liquid baffle plate (3) is configured as a conical bucket-shaped structure with a middle portion contracted downward.

2. The automatic aerator for a biological waste liquid pool according to claim 1, characterized in that: A vacuum hood (5) is fixedly connected to the liquid baffle plate (3); the vacuum hood (5) is provided with a plurality of liquid outlet holes (50).

3. The automatic aerator for a biological wastewater pool according to claim 2, characterized in that: A first annular tube (61) is fixedly connected to the exhaust hood (5); and a plurality of first spray heads (62) are connected to the first annular tube (61).

4. The automatic aerator for a biological wastewater pool according to claim 1, characterized in that: A baffle ring (7) is fixedly connected to the liquid baffle plate (3); a plurality of third channel structures (70) are provided on the baffle ring (7); a third screen (71) is fixedly connected to the third channel of the baffle ring (7); the mesh size of the third screen (71) is smaller than the mesh size of the first screen (31), and the mesh size of the third screen (71) is larger than the mesh size of the second screen (41).

5. An automatic aerator for a biological wastewater pool according to any one of claims 1 to 4, characterized in that: An external fixing frame (12) is fixedly connected to the main fixing frame (11); a second annular tube (81) is fixedly connected to the external fixing frame (12); and a plurality of second spray heads (82) are connected to the second annular tube (81).

6. The automatic aerator for a biological wastewater pool according to claim 5, characterized in that: A height-limiting retaining ring structure (42) is provided at the top of the retaining edge structure of the collection plate (4) to prevent foam from overflowing outwards.

7. The automatic aerator for a biological wastewater pool according to claim 6, characterized in that: A plurality of foam liquid level sensors (43) are installed in the height limiting retaining ring structure (42) of the collection tray (4).

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