Backwashing siltation prevention device for aerobic tank
By setting up a backflush air pipe assembly below the aerobic tank bottom aerobic tank, and using jet airflow and backflush force to clean up the silt, the problem of deterioration of sewage treatment caused by silt at the bottom of the aerobic tank is solved, and effective silt cleaning and pool volume utilization is achieved.
Patent Information
- Application Number
- CN202422042452.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-22
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-08-22
AI Technical Summary
The prior art cannot effectively prevent and clean up the accumulation of silt under the aerobic tank at the bottom, resulting in the poor effect of sewage microbial treatment.
A backflush and anti-silt device for aerobic tank is designed. By arranging the backflush air pipe assembly in the silt area, the sludge in the silt area is agitated and cleaned by jet airflow and backflush force to ensure that the silt under the aeration tray is effectively cleaned.
This device can effectively stir and clean the silt under the aerobic tank bottom, maximize the pool volume of the aerobic tank, and improve the effect of sewage microbial treatment.
Smart Images
Figure CN222989905U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of aerobic tank anti-silting devices, in particular to an aerobic tank backwashing anti-silting device. Background Technique
[0002] An aeration device is installed at the bottom of the aerobic tank for sewage treatment. Due to the unevenness of the tank bottom, saddle supports need to be installed to adjust the aeration device so as to adjust the aeration disc to a horizontal state; this will result in an area under the aeration disc where sufficient air agitation cannot be carried out, creating a dead corner for bottom cleaning, which is extremely likely to cause silting at the bottom of the aerobic tank, thereby reducing the activity of activated sludge and shrinking the effective tank volume, affecting the sewage microbial treatment effect.
[0003] Chinese Patent (Grant Publication No. CN 220684869 U, Grant Publication Date: March 29, 2024) discloses a device for improving the cleaning of sediment at the bottom of an aerobic tank. During operation, one end of its hose is connected to an air source, the check valve is opened, and gas enters the manual valve, main pipe, and branch pipe and is ejected through the nozzle, agitating the sediment at the bottom of the tank to prevent the effect of aerobic tank aeration from being affected by the accumulation of bacteria; the motor is started, and the motor drives the threaded rod to rotate. The rotation of the threaded rod drives the moving frame to move on the upper side of the aerobic tank main body, and the position of the nozzle inside the aerobic tank main body can be adjusted to adjust the position of agitating the sediment at the bottom of the tank, realizing the full blowing of the sediment at the bottom of the tank; it can be seen that its technical solution requires the motor to drive the moving frame to move in order to drive the main pipe, branch pipe, and nozzle to move horizontally along the aerobic tank to achieve the full blowing and agitation of the sediment at the bottom of the tank. Obviously, this cannot be applied to the structure with an aeration disc at the bottom of the aerobic tank and cannot solve the problem that the sewage microbial treatment effect deteriorates due to easy silting under the aeration disc at the bottom of the aerobic tank.
[0004] Therefore, how to provide an aerobic tank backwashing anti-silting device that can prevent silting under the aeration disc at the bottom of the aerobic tank and maximize the utilization of the tank volume of the aerobic tank is an urgent problem to be solved by those skilled in the art. Summary of the Utility Model
[0005] In view of this, the utility model proposes an aerobic tank backwashing anti-silting device, aiming to solve the technical problem that the above-mentioned traditional sediment cleaning device at the bottom of the aerobic tank cannot effectively prevent and clean the silt under the aeration disc.
[0006] To achieve the above purpose, the utility model adopts the following technical solutions:
[0007] The utility model provides an aerobic tank backwashing anti-silting device. An aeration disc is installed at the lower part inside the aerobic tank. The inner cavity of the aerobic tank corresponding to the lower part of the aeration disc is a silting area, which includes: an air inlet main pipe and a backwashing air pipe assembly; the backwashing air pipe assembly is arranged in the silting area; the air outlet of the air inlet main pipe is communicated with the air inlet of the backwashing air pipe assembly for air supply; the air outlet direction of the backwashing air pipe assembly corresponds to the bottom end face of the aerobic tank, so as to stir and backwash the sludge in the silting area by using the ejected air flow.
[0008] For the aerobic tank backwashing anti-silting device of the utility model, air is supplied through the air inlet main pipe, and the air outlet of the backwashing air pipe assembly is used to jet air towards the bottom end face of the aerobic tank to stir the deposited sludge in the silting area below the aeration disc, and the backwashing force is used to convey the sludge above the aeration disc to fully aerate and improve the sewage microbial treatment effect; in addition, the air flow ejected from the air outlet of the backwashing air pipe assembly and the water flow driven by it can directly wash the bottom end face of the aerobic tank, and the air flow and water flow reflected by the bottom end face of the aerobic tank can wash the bottom wall of the aeration disc, realizing relatively thorough stirring and backwashing of the sludge in the silting area, and thus maximizing the utilization of the tank volume of the aerobic tank.
[0009] As a further improvement of the above technical solution, the backwashing air pipe assembly includes a plurality of backwashing air pipes. The plurality of backwashing air pipes are arranged in parallel on the bottom end face inside the aerobic tank and are all communicated with the air outlet of the air inlet main pipe; air outlets are provided on the peripheral side walls corresponding to the bottom end face inside the aerobic tank of the plurality of backwashing air pipes, and the air outlet direction of the air outlet is inclined downward.
[0010] The beneficial effects of the above technical solution are: the plurality of backwashing air pipes are arranged in parallel on the bottom end face inside the aerobic tank, without occupying the space above the aeration disc inside the aerobic tank, and the structure is more compact; the air outlet direction of the air outlet is inclined downward, which can improve the stirring effect of the sludge at the bottom of the tank.
[0011] As a further improvement of the above technical solution, the plurality of backwashing air pipes are arranged in parallel and opposite to each other and evenly distributed on the bottom end face inside the aerobic tank;
[0012] Each backwashing air pipe has two groups of air outlets; the two groups of air outlets are arranged on both sides of the lower part of the peripheral wall of the corresponding backwashing air pipe in a one-to-one correspondence; each group of air outlets has a plurality of air outlets, and the plurality of air outlets are evenly distributed along the length direction of the corresponding backwashing air pipe.
[0013] The beneficial effects of the above technical solution are: air outlets are arranged on both sides of the lower part of the backwashing air pipe, and the adjacent backwashing air pipes can jointly achieve the effect of cross washing, and the sludge can be efficiently cleaned.
[0014] As a further improvement of the above technical solution, the air outlet direction corresponds to the relative direction of multiple said backwashing air pipes and is inclined downward at an angle of 45 degrees with the vertical direction.
[0015] The beneficial effect of the above technical solution is that the air outlet direction is inclined downward at an angle of 45 degrees, which can expand the flushing range and improve the flushing effect on the premise of ensuring sufficient backwashing force.
[0016] As a further improvement of the above technical solution, all the backwashing air pipes are fixed to the inner bottom end surface of the aerobic tank through pipe clamps.
[0017] The beneficial effect of the above technical solution is that by fixing the backwashing air pipes to the inner bottom end surface of the aerobic tank through pipe clamps, the positioning of the backwashing air pipes can be ensured to be stable, and displacement under the action of backwashing force can be prevented.
[0018] As a further improvement of the above technical solution, the air outlet is arranged radially along the backwashing air pipe, and its diameter is 5 mm.
[0019] The beneficial effect of the above technical solution is that the air outlet is arranged radially along the backwashing air pipe, which is conducive to drilling and manufacturing the air outlet on the pipe wall of the backwashing air pipe, reducing the manufacturing cost of the backwashing air pipe.
[0020] As a further improvement of the above technical solution, one end of the backwashing air pipe is closed, and the other end is communicated with the air outlet of the intake main pipe.
[0021] As a further improvement of the above technical solution, the air inlet of the intake main pipe is communicated with the air source of the sewage treatment plant, and a valve is installed on the intake main pipe to control the air supply state of the intake main pipe.
[0022] The beneficial effect of the above technical solution is that it is conducive to using the air source of the sewage treatment plant as power, enabling the device to be organically combined with the sewage treatment system; by controlling the opening and closing and the opening degree of the valve, the opening and closing state and the air supply pressure of the intake main pipe can be conveniently adjusted, so that the backwashing and anti-silting working state of the device can be controlled according to the actual silt accumulation situation in the aerobic tank.
[0023] As a further improvement of the above technical solution, a controller is further included, and the controller is electrically connected to the valve.
[0024] The beneficial effect of the above technical solution is that the opening and closing state and the opening degree of the valve can be flexibly controlled through the controller, and timed and quantitative cleaning control can be carried out according to actual cleaning needs.
[0025] It can be seen from the above technical solutions that compared with the prior art, the present utility model discloses an aerobic tank backwashing and anti-silting device, which has the following advantages and beneficial effects:
[0026] 1. The aerobic pool backwash anti-siltation device of the utility model is directly arranged in the siltation area below the aeration disk, does not occupy the space above the aeration disk, and does not interfere with the aeration work of the aeration disk.
[0027] 2. The utility model utilizes the jet airflow from the outlet of the backwash air pipe assembly to stir the sludge in the siltation area and make it float, and also washes the bottom end surface of the aerobic tank and the bottom wall of the aeration plate through the impact force and the backwash force.
[0028] 3. The aerobic pool backwashing and anti-silting device of the utility model can be cleaned and controlled by a controller, realizing timed and quantitative cleaning, and can be used to prevent silting in the dead corner below the aeration plate. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.
[0030] Figure 1 Schematic diagram of the overall structure of the utility model aerobic pool backwashing anti-siltation device;
[0031] Figure 2 A schematic diagram of the backwashing air pipe structure when viewed from above of the utility model aerobic pool backwashing anti-siltation device;
[0032] Figure 3 A schematic diagram of a radial cross-section of a backwashing air pipe of an aerobic pool backwashing and anti-silting device according to the utility model;
[0033] Figure 4 A top view of the layout of the backwashing air pipe assembly of the utility model aerobic pool backwashing anti-siltation device
[0034] In the figure: 1. Flushing mechanism; 11. Air inlet main pipe; 111. Vertical pipe; 112. Horizontal pipe; 113. Connecting pipe; 114. Tee pipe; 12. Backwashing air pipe assembly; 121. Backwashing air pipe; 1211. Air outlet; 2. Aerobic tank; 21. Silt accumulation area; 3. Aeration disk; 31. Microporous aerator; 4. Valve. DETAILED DESCRIPTION
[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.
[0036] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.
[0037] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more unless otherwise specifically defined.
[0038] In the present utility model, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0039] As Figures 1 to 4 shown, this embodiment provides an aerobic tank backwashing anti-silting device, in which an aeration disk 3 is installed at the lower part inside the aerobic tank 2, and the inner cavity of the aerobic tank 2 corresponding to the lower part of the aeration disk 3 is a silt accumulation area 21, including:
[0040] A flushing mechanism 1, the flushing mechanism 1 includes an air inlet main pipe 11 and a backwashing air pipe assembly 12; the backwashing air pipe assembly 12 is arranged in the silt accumulation area 21; the air outlet of the air inlet main pipe 11 is communicated with the air inlet of the backwashing air pipe assembly 12 to supply air; the air outlet direction of the backwashing air pipe assembly 12 corresponds to the bottom end surface of the aerobic tank 2, so as to use the backwashing force after the jet airflow acts on the bottom end surface of the aerobic tank 2 to stir and clean the sludge in the silt accumulation area 21.
[0041] The aerobic tank backwashing anti-silting device of this embodiment is supplied with gas through the main air inlet pipe 11, and the air outlet of the backwashing air pipe assembly 12 is used to jet air towards the bottom end surface of the aerobic tank 2 to stir the deposited sludge in the silt accumulation area 21 below the aeration disk 3, and the silt is conveyed above the aeration disk 3 by the reaction force to fully aerate and improve the sewage microbial treatment effect; in addition, the airflow ejected from the air outlet of the backwashing air pipe assembly 12 and the water flow driven by it can directly wash the bottom end surface of the aerobic tank 2, and the airflow and water flow reflected by the bottom end surface of the aerobic tank 2 can wash the bottom wall of the aeration disk 3, realizing a relatively thorough cleaning of the sludge in the silt accumulation area 21, and thus maximizing the utilization of the tank volume of the aerobic tank.
[0042] In some embodiments, the backwashing air pipe assembly 12 includes multiple backwashing air pipes 121, and the multiple backwashing air pipes 121 are arranged in parallel on the inner bottom end surface of the aerobic tank 2 and are all communicated with the air outlet of the main air inlet pipe 11; air outlets 1211 are opened on the peripheral side walls corresponding to the inner bottom end surface of the aerobic tank 2 for the multiple backwashing air pipes 121, and the air outlet direction of the air outlet 1211 is inclined downward.
[0043] The multiple backwashing air pipes 121 are arranged in parallel on the inner bottom end surface of the aerobic tank 2, without occupying the space above the aeration disk 3 in the aerobic tank, and the structure is more compact; the air outlet direction of the air outlet 1211 is inclined downward, which can improve the stirring effect of the sludge at the bottom of the tank.
[0044] In some embodiments, see Figure 1 and Figure 4 , the multiple backwashing air pipes 121 are all located in the same plane parallel to the inner bottom end surface of the aerobic tank 2, and are arranged in parallel opposite to each other and evenly distributed on the inner bottom end surface of the aerobic tank 2;
[0045] The air outlet 1211 of each backwashing air pipe 121 is in two groups; the two groups of air outlets 1211 are arranged on both sides of the lower part of the peripheral wall of the backwashing air pipe 121 in a one-to-one correspondence; each group of air outlets 1211 is multiple, and the multiple air outlets 1211 are evenly distributed along the length direction of the corresponding backwashing air pipe 121.
[0046] Air outlets 1211 are arranged on both sides of the lower part of the backwashing air pipe 121, and the combined action of adjacent backwashing air pipes 121 can achieve the effect of cross washing and can efficiently clean the silt.
[0047] In some embodiments, the air outlet direction of the air outlet 1211 corresponds to the relative direction of the multiple backwashing air pipes 121 and is inclined downward at an angle of 45 degrees to the vertical direction; see Figure 3 , in the figure, θ is the included angle between the air outlet direction of the air outlet 1211 and the vertical direction.
[0048] The beneficial effect of the above technical solution is that the air outlet direction of the air outlet 1211 is inclined downward at an angle of 45 degrees, which can expand the washing range and improve the washing effect on the premise of ensuring sufficient backwashing force.
[0049] In some embodiments, the backwashing air pipes 121 are all fixed to the inner bottom end surface of the aerobic tank 2 by pipe clamps.
[0050] Fixing the backwashing air pipes 121 to the inner bottom end surface of the aerobic tank 2 by pipe clamps can ensure the stable positioning of the backwashing air pipes 121 and prevent displacement under the action of backwashing force.
[0051] In some embodiments, the air outlet 1211 is arranged radially along the backwashing air pipe 121, and its diameter is 5 mm.
[0052] The air outlet 1211 is arranged radially along the backwashing air pipe 121, which is conducive to drilling and manufacturing the air outlet on the wall of the backwashing air pipe 121, reducing the manufacturing cost of the backwashing air pipe 121.
[0053] In some embodiments, one end of the backwashing air pipe 121 is closed, and the other end is communicated with the air outlet of the intake main pipe 11.
[0054] In some embodiments, the air inlet of the intake main pipe 11 is communicated with the air source of the sewage treatment plant, and a valve 4 is installed on the intake main pipe 11 to control the air supply state of the intake main pipe 11.
[0055] Taking the air source of the sewage treatment plant as the power is conducive to the organic combination of the device and the sewage treatment system; by controlling the opening and closing and the opening degree of the valve 4, the opening and closing state and the air supply pressure of the intake main pipe 11 can be conveniently adjusted, so that the backwashing and anti-silting working state of the device can be controlled according to the actual silt accumulation situation in the aerobic tank.
[0056] Specifically, the valve 4 can be manually operated to open and close and adjust the opening degree.
[0057] Specifically, the intake main pipe 11 includes a vertical pipe 111 and a horizontal pipe 112; the vertical pipe 111 is arranged along the height direction of the aerobic tank 2, and the horizontal pipe 112 is arranged along the width or length direction of the aerobic tank 2; the lower end of the vertical pipe 111 extends into the inner bottom of the aerobic tank 2 and is connected and communicated with the horizontal pipe 112; the valve 4 is installed on the vertical pipe 111, and the upper port of the vertical pipe 111 is communicated with the air source of the sewage treatment plant; the horizontal pipe 112 and the backwashing air pipes 121 are in the same plane, and multiple backwashing air pipes 121 are all vertically connected and communicated with the horizontal pipe 112; after the valve 4 is opened, the air source of the sewage treatment plant can supply air to the vertical pipe 111, and the vertical pipe 111 conveys the gas to the horizontal pipe 112, and then distributes it to each backwashing air pipe 121.
[0058] In some embodiments, to make the air pressure in each backwashing air pipe 121 stable, multiple vertical pipes 111 can be arranged at intervals along the length direction of the horizontal pipe 112.
[0059] Specifically, there are two riser pipes 111; the lower ends of the two riser pipes 111 are both connected and communicated with the horizontal pipe 112; the upper ends of the two riser pipes 111 converge through a tee pipe 114 and are connected to the air source of the sewage treatment plant through a connecting pipe 113; a valve 4 is installed on the connecting pipe 113 to synchronously control the ventilation states of the two riser pipes 111.
[0060] In some embodiments, a controller is further included, and the controller is electrically connected to the valve 4.
[0061] The opening and closing state and the opening degree of the valve 4 can be flexibly controlled through the controller, and timed and quantitative cleaning control can be performed according to actual cleaning needs.
[0062] Specifically, an existing PLC controller is selected for the controller; the valve 4 is an electrically controlled valve; an electrically controlled valve with adjustable opening degree can be selected for the valve 4.
[0063] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.
[0064] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.
Claims
1. An aerobic tank backwashing anti-silting device, wherein an aeration plate (3) is installed in the lower part of the aerobic tank (2), and the inner cavity of the aerobic tank (2) corresponding to the lower part of the aeration plate (3) is a silting area (21), characterized in that: include: An air intake pipe (11) and a backwashing air pipe assembly (12); the backwashing air pipe assembly (12) is arranged in the silt accumulation area (21); the air outlet of the air intake pipe (11) is connected to the air inlet of the backwashing air pipe assembly (12) for air supply; the air outlet direction of the air outlet of the backwashing air pipe assembly (12) corresponds to the bottom end surface of the aerobic tank (2), so that the sludge in the silt accumulation area (21) is stirred and backwashed by using the jet airflow.
2. The aerobic pool backwash anti-siltation device according to claim 1, characterized in that: The backwash air pipe assembly (12) comprises a plurality of backwash air pipes (121), the plurality of backwash air pipes (121) being arranged in parallel on the inner bottom end surface of the aerobic tank (2) and all being connected to the air outlet of the air inlet main pipe (11); the plurality of backwash air pipes (121) are all provided with air outlets (1211) on the peripheral side walls corresponding to the inner bottom end surface of the aerobic tank (2), and the air outlet direction of the air outlets (1211) is inclined downward.
3. The aerobic pool backwash anti-siltation device according to claim 2, characterized in that: The plurality of backwash air pipes (121) are arranged in parallel and opposite to each other in sequence and are evenly distributed on the inner bottom end surface of the aerobic tank (2); Each backwash air pipe (121) has two groups of air outlets (1211); the two groups of air outlets (1211) are arranged one by one on both sides of the lower part of the peripheral wall of the backwash air pipe (121); each group of air outlets (1211) has a plurality of air outlets, and the plurality of air outlets (1211) are evenly distributed along the length direction of the corresponding backwash air pipe (121).
4. The aerobic pool backwash anti-siltation device according to claim 3, characterized in that: The air outlet direction of the air outlet (1211) corresponds to the relative direction of the plurality of backwash air pipes (121) and is inclined downward at an angle of 45 degrees to the vertical direction.
5. The aerobic pool backwash anti-siltation device according to claim 4, characterized in that: The backwashing air pipes (121) are fixed to the inner bottom end surface of the aerobic tank (2) via pipe clamps.
6. The aerobic pool backwash anti-siltation device according to claim 4, characterized in that: The air outlet (1211) is arranged radially along the backwash air pipe (121), and has a diameter of 5 mm.
7. The aerobic pool backwash anti-siltation device according to claim 2, characterized in that: One end of the backwash air pipe (121) is closed, and the other end is connected to the air outlet of the air inlet main pipe (11).
8. The aerobic pool backwashing and anti-silting device according to any one of claims 1 to 7, characterized in that: The air inlet of the air inlet main pipe (11) is connected to the air source of the sewage treatment plant, and a valve (4) is installed on the air inlet main pipe (11) to control the air supply state of the air inlet main pipe (11).
9. The aerobic pool backwash anti-siltation device according to claim 8, characterized in that: It also includes a controller, which is electrically connected to the valve (4).