Aeration device for sewage treatment

Abstract

The utility model discloses an aeration device for sewage treatment, which belongs to the technical field of sewage treatment and comprises a frame, a backwashing ventilation component and an aeration component, the aeration component for driving gas and liquid to be mixed to generate bubbles and sending out the bubbles is mounted on the frame, and a water inlet filtering component is arranged at the upper end of the frame; the backwash ventilation assembly comprises a ventilation part used for conveying gas to the inner side of the frame and a backwash part used for cleaning the frame, and the ventilation part and the backwash part are connected with the frame. Through the mode, the ventilation component is matched with the backwashing component to carry out backwashing on the water inlet filtering component of the frame, so that dirt attached to the outer side of the water inlet filtering component is reduced, and a poor aeration effect caused by water inlet blockage is avoided.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to an aeration device for wastewater treatment. Background Technology

[0002] Aeration equipment is a device used in water treatment processes. It is mainly used to introduce air or oxygen into water to promote the degradation of organic matter in the water and increase the dissolved oxygen content. It is a common procedure in wastewater treatment.

[0003] For example, Chinese patent application CN111115861A discloses an aeration device, which includes a mixing chamber and an air inlet chamber. The mixing chamber has a liquid inlet and a liquid outlet, and the mixing chamber is provided with an air inlet hole that penetrates the chamber wall. The air inlet hole is located in the inner cavity of the air inlet chamber, and the air inlet chamber has an air inlet. Along the liquid flow direction in the mixing chamber, the cross-sectional area of ​​the inner cavity of the mixing chamber gradually decreases.

[0004] However, after long-term use, the stains in the sewage will remain at the inlet of the aeration device, causing blockage and reducing the water intake efficiency, thereby reducing the aeration effect.

[0005] Based on this, the present invention designs an aeration device for sewage treatment to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides an aeration device for sewage treatment.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An aeration device for wastewater treatment includes a frame, a backwashing ventilation component, and an aeration component.

[0009] An aeration component for driving gas and liquid to mix, generate bubbles and send them out is installed on the frame, and a water inlet filter component is provided at the upper end of the frame.

[0010] The backwash ventilation assembly includes a ventilation component for supplying gas to the inside of the frame and a backwash component for cleaning the frame, and the ventilation component and the backwash component are connected to the frame.

[0011] Furthermore, the frame includes a support, an outer shell, an inner shell, a filter screen, and multiple air outlet pipes. The outer shell is fixedly installed on the upper end of the support, the inner shell is fixedly installed on the inner side of the outer shell by a fastener, the filter screen is fixedly installed on the upper end between the outer shell and the inner shell, the multiple air outlet pipes are evenly distributed on the lower outer side of the outer shell, and the air outlet pipes are connected to the inner side of the outer shell. The support is connected to the aeration assembly, the outer shell is connected to the ventilation component and the backwashing component, the inner shell is connected to the aeration assembly, and the filter screen is the water inlet filtration component.

[0012] Furthermore, the ventilation component includes a three-way air inlet pipe, a three-way valve, and an air inlet baffle. The three-way air inlet pipe is fixedly installed on the outside of the outer shell. One end of the three-way air inlet pipe is connected to the air supply equipment, and the other two ends of the three-way air inlet pipe are fixedly connected to the side walls of the outer shell and the inner shell, respectively. The three-way valve is fixedly installed on the outside of the three-way air inlet pipe to control the airflow direction of the three-way air inlet pipe. The air inlet baffle is fixedly installed on the lower end of the inner side of the outer shell and is connected to the aeration assembly.

[0013] Furthermore, the air intake baffle is provided with multiple through holes for connecting the outer shell and the inner side of the inner shell.

[0014] Furthermore, the backwashing component includes an annular tube and multiple air nozzles. The annular tube is fixedly installed on the inner wall of the housing, and the multiple air nozzles are evenly distributed and fixedly installed on the upper end of the annular tube. An annular cavity is formed between the annular tube and the housing, and one end of the three-way air inlet pipe is connected to the inner cavity of the annular tube.

[0015] Furthermore, the aeration assembly includes an air supply component, an adjustment component, and an agitation component. The air supply component is connected to the adjustment component, the inner shell, and the air inlet baffle. The adjustment component is connected to the air inlet baffle and the support. The agitation component is connected to the support.

[0016] Furthermore, the air supply component includes a motor, a rotating shaft, multiple impellers, an air outlet baffle, and multiple sliding cylinders. The motor is fixedly installed on the upper end of the inner shell, and the output end of the motor is fixedly connected to the rotating shaft. The rotating shaft is rotatably connected to the inner shell, and the lower end of the rotating shaft passes through the inner shell, the air outlet baffle, and the air inlet baffle to connect with the agitation component. The rotating shaft and the air outlet baffle are rotatably and slidably connected through a composite bearing. Multiple impellers are located inside the inner shell and are evenly distributed and fixedly installed outside the rotating shaft. The air outlet baffle is located below the inner shell, and the lower end of the air outlet baffle is connected to the adjustment component. The sliding cylinders are fixedly installed at the lower end of the inner shell and are slidably and sealingly connected with the air outlet baffle. The sliding cylinders are used to connect the inner side of the inner shell and the area below the air outlet baffle.

[0017] Furthermore, a gap is formed between the outer side of the lower section of the air outlet baffle and the air inlet baffle, and multiple through holes for accommodating the slide cylinder are correspondingly provided on the air outlet baffle and the inner shell.

[0018] Furthermore, there are two adjustment components, which are symmetrically arranged at the lower end of the air outlet baffle. Each adjustment component includes an adjustment rod and a knob. The upper end of the adjustment rod is fixedly connected to the air outlet baffle, and the lower end of the adjustment rod passes through the air inlet baffle and the bracket and is threadedly connected to the knob. The upper end of the knob is rotatably connected to the bracket.

[0019] Furthermore, the agitation assembly includes an agitation shaft, bolts, and multiple agitation blades. The upper end of the agitation shaft is splinedly connected to the rotating shaft, and the lower end of the agitation shaft passes through the bracket and is rotatably and sealed to the bracket. Bolts pass through the agitation shaft and the rotating shaft to fix the agitation shaft and the rotating shaft. Multiple through holes for multi-level adjustment are provided on the agitation shaft, and multiple agitation blades are evenly distributed and fixedly installed on the outer side of the lower end of the agitation shaft.

[0020] Compared with the prior art, the advantages of this utility model are as follows: 1. By using the ventilation component in conjunction with the backwashing component to backwash the water inlet filter component of the frame, the dirt on the outside of the water inlet filter component is reduced, and the water inlet blockage is avoided, which leads to poor aeration effect.

[0021] 2. By setting up the agitator shaft and agitator blades, the sludge at the bottom of the sewage tank can be moved up and down while aerating, which improves the aeration effect of the entire sewage tank. At the same time, the setting of bolts can change the depth of the agitator blades.

[0022] 3. By adjusting the up and down position of the air outlet baffle through the knob and adjusting rod, the size and density of the sprayed bubbles can be different, thereby achieving different aeration effects and adapting to different sewage tanks. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This utility model relates to a three-dimensional aeration device for sewage treatment. Figure 1 ;

[0025] Figure 2 This utility model relates to a three-dimensional aeration device for sewage treatment. Figure 2 ;

[0026] Figure 3 This is a cross-sectional perspective view of an aeration device for wastewater treatment according to the present invention. Figure 1 ;

[0027] Figure 4 This is a cross-sectional perspective view of an aeration device for wastewater treatment according to the present invention. Figure 2 ;

[0028] Figure 5 for Figure 3 Enlarged view of point A in the middle;

[0029] Figure 6 for Figure 4 Enlarged view of point B in the middle;

[0030] Figure 7 for Figure 4 Enlarged view of point C in the middle.

[0031] The labels in the diagram represent:

[0032] 1. Frame; 11. Support; 12. Outer shell; 13. Inner shell; 14. Filter screen; 15. Air outlet pipe; 2. Backwash ventilation assembly; 21. Ventilation component; 211. Three-way air inlet pipe; 212. Three-way valve; 213. Air inlet baffle; 22. Backwash component; 221. Annular pipe; 222. Air nozzle; 3. Aeration assembly; 31. Air supply component; 311. Motor; 312. Rotary shaft; 313. Impeller; 314. Air outlet baffle; 315. Slide cylinder; 316. Sealing ring; 32. Adjusting component; 321. Adjusting rod; 322. Knob; 33. Agitator assembly; 331. Agitator shaft; 332. Bolt; 333. Agitator blade. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0034] Example 1: In some embodiments, please refer to the accompanying drawings. Figures 1-7 An aeration device for wastewater treatment includes a frame 1, a backwashing ventilation component 2, and an aeration component 3.

[0035] The frame 1 is equipped with an aeration component 3 for driving the gas and liquid to mix, generate bubbles and send them out. The upper end of the frame 1 is provided with a water inlet filter component.

[0036] The backwash ventilation assembly 2 includes a ventilation component 21 for supplying gas to the inside of the frame 1 and a backwash component 22 for cleaning the frame 1. The ventilation component 21 and the backwash component 22 are connected to the frame 1.

[0037] When the aeration device for wastewater treatment is in normal use, the equipment is placed in the wastewater tank. Wastewater enters the inner side of the frame 1 through the inlet filter component. The aeration component 21 delivers gas to the inner side of the frame 1. The aeration assembly 3 is activated to spray the gas from the inner side of the frame 1 to the outer side. The sprayed gas drives the filtered wastewater to generate bubbles and spray them out. During cleaning, the aeration component 21 is adjusted so that the gas is sprayed out through the backwash component 22. The gas sprayed out of the backwash component 22 backwashes the frame 1 from bottom to top. The aeration component 21 and the backwash component 22 backwash the inlet filter component of the frame 1, reducing the adhesion of dirt on the outer side of the inlet filter component and avoiding blockage of the inlet water, which would lead to poor aeration effect.

[0038] Example 2: In some embodiments, such as Figure 1 , Figure 2 and Figure 3 As shown in the preferred embodiment of this utility model, the frame 1 includes a support 11, an outer shell 12, an inner shell 13, a filter screen 14, and multiple air outlet pipes 15. The outer shell 12 is fixedly installed on the upper end of the support 11, the inner shell 13 is fixedly installed on the inner side of the outer shell 12 by a fastener, the filter screen 14 is fixedly installed on the upper end between the outer shell 12 and the inner shell 13, the multiple air outlet pipes 15 are evenly distributed on the lower outer side of the outer shell 12, and the air outlet pipes 15 communicate with the inner side of the outer shell 12. The support 11 is connected to the aeration assembly 3, the outer shell 12 is connected to the ventilation component 21 and the backwashing component 22, the inner shell 13 is connected to the aeration assembly 3, and the filter screen 14 is a water inlet filtration component.

[0039] The ventilation component 21 includes a three-way air inlet pipe 211, a three-way valve 212, and an air inlet baffle 213. The three-way air inlet pipe 211 is fixedly installed on the outside of the outer shell 12. One end of the three-way air inlet pipe 211 is connected to the air supply equipment, and the other two ends of the three-way air inlet pipe 211 are fixedly connected to the side walls of the outer shell 12 and the inner shell 13, respectively. The three-way valve 212 is fixedly installed on the outside of the three-way air inlet pipe 211 to control the airflow direction of the three-way air inlet pipe 211. The air inlet baffle 213 is fixedly installed on the lower inner side of the outer shell 12 and is connected to the aeration assembly 3.

[0040] The air intake baffle 213 has multiple through holes for connecting the outer shell 12 and the inner side of the inner shell 13.

[0041] The backwashing component 22 includes an annular pipe 221 and multiple air nozzles 222. The annular pipe 221 is fixedly installed on the inner wall of the outer casing 12, and the multiple air nozzles 222 are evenly distributed and fixedly installed on the upper end of the annular pipe 221. An annular cavity is formed between the annular pipe 221 and the outer casing 12. One end of the three-way air inlet pipe 211 is connected to the inner cavity of the annular pipe 221.

[0042] When the aeration device for wastewater treatment is in normal use, the equipment is placed in the wastewater tank. Wastewater enters the cavity inside the outer shell 12 through the filter screen 14. The air supply device delivers gas to the space between the support 11 and the air inlet baffle 213 through the three-way air inlet pipe 211, and then enters the space between the air inlet baffle 213 and the aeration component 3 through the through holes on the air inlet baffle 213. When cleaning is required, the three-way valve 212 is activated to connect the air supply device to the inside of the annular pipe 221. The air supply device delivers gas to the inside of the annular pipe 221 through the three-way air inlet pipe 211 and then sprays it out through the jet nozzle 222. The gas sprayed out by the jet nozzle 222 carries the filtered wastewater from bottom to top to backwash the filter screen 14. By controlling the air path of the three-way air inlet pipe 211 through the three-way valve 212, the annular pipe 221 and the jet nozzle 222 can achieve uniform backwashing of the filter screen 14, avoiding the accumulation of dirt on the top of the filter screen 14, which would cause blockage and affect the water intake efficiency and aeration effect.

[0043] Example 3: In some embodiments, such as Figures 1-7 As shown, in a preferred embodiment of the present invention, the aeration assembly 3 includes an air supply component 31, an adjustment component 32 and an agitation component 33. The air supply component 31 is connected to the adjustment component 32, the inner shell 13 and the air inlet baffle 213. The adjustment component 32 is connected to the air inlet baffle 213 and the support 11. The agitation component 33 is connected to the support 11.

[0044] The air supply component 31 includes a motor 311, a rotating shaft 312, multiple impellers 313, an air outlet baffle 314, and multiple slides 315. The motor 311 is fixedly installed on the upper end of the inner shell 13. The output end of the motor 311 is fixedly connected to the rotating shaft 312. The rotating shaft 312 is rotatably connected to the inner shell 13. The lower end of the rotating shaft 312 passes through the inner shell 13, the air outlet baffle 314, and the air inlet baffle 213 and is connected to the stirring component 33. The rotating shaft 312 and the air outlet baffle 314 are connected to the stirring component 315. 14 is rotated and slidably connected by a composite bearing. Multiple impellers 313 are located inside the inner shell 13. The impellers 313 are evenly distributed and fixedly installed on the outside of the rotating shaft 312. The exhaust baffle 314 is located below the inner shell 13. The lower end of the exhaust baffle 314 is connected to the adjusting component 32. The slide cylinder 315 is fixedly installed at the lower end of the inner shell 13 and is slidably and sealed to the exhaust baffle 314. The slide cylinder 315 is used to connect the inner side of the inner shell 13 and the lower part of the exhaust baffle 314.

[0045] A gap is formed between the lower outer side of the air outlet baffle 314 and the air inlet baffle 213. The air outlet baffle 314 and the inner shell 13 are respectively provided with a plurality of through holes for accommodating the slide cylinder 315.

[0046] The air supply component 31 also includes a sealing ring 316, which is fixedly installed on the outside of the inner shell 13 and the air outlet baffle 314 for sealing.

[0047] Two adjustment components 32 are provided, and the two adjustment components 32 are symmetrically arranged on the left and right sides at the lower end of the air outlet baffle 314. The adjustment component 32 includes an adjustment rod 321 and a knob 322. The upper end of the adjustment rod 321 is fixedly connected to the air outlet baffle 314, and the lower end of the adjustment rod 321 passes through the air inlet baffle 213 and the bracket 11 and is threadedly connected to the knob 322. The upper end of the knob 322 is rotatably connected to the bracket 11.

[0048] The agitation assembly 33 includes an agitation shaft 331, bolts 332, and multiple agitation blades 333. The upper end of the agitation shaft 331 is splinedly connected to the rotating shaft 312, and the lower end of the agitation shaft 331 passes through the bracket 11 and is rotatably and sealed to the bracket 11. Bolts 332 pass through the agitation shaft 331 and the rotating shaft 312 to fix the agitation shaft 331 and the rotating shaft 312. Multiple through holes are provided on the agitation shaft 331 for multi-level adjustment to accommodate the bolts 332. Multiple agitation blades 333 are evenly distributed and fixedly installed on the outer side of the lower end of the agitation shaft 331.

[0049] When the aeration device for wastewater treatment is in normal use, the gas inside the inlet baffle 213 enters between the inlet baffle 213 and the outlet baffle 314 through the through hole on the inlet baffle 213. The motor 311 is started, driving the rotating shaft 312 and impeller 313 to rotate. The airflow generated by the impeller 313 enters between the inlet baffle 213 and the outlet baffle 314 along the slide 315, causing the gas to be ejected from the gap between the inlet baffle 213 and the outlet baffle 314. The gas mixes with the filtered wastewater, generating bubbles that are ejected from the outlet pipe 15. Simultaneously, the rotating shaft 312 drives the stirring shaft 331 and stirring blades 333 to rotate. The bolt 332 stirs the wastewater at the bottom of the wastewater tank, causing the sludge to undulate, thus improving the aeration effect. Adjusting the insertion position of the bolt 332 and the stirring shaft 331... The setting is used to change the position of the stirring blade 333. By rotating the knob 322, the adjusting rod 321 moves up and down along the knob 322. The adjusting rod 321 drives the air outlet baffle 314 to move up and down along the slide cylinder 315, thereby adjusting the gap between the air outlet baffle 314 and the air inlet baffle 213 to generate bubbles of different sizes and densities. Through the setting of the stirring shaft 331 and the stirring blade 333, the bottom sludge of the sewage tank can be stirred to rise and fall while aerating, which improves the aeration effect of the entire sewage tank. At the same time, the setting of the bolt 332 can change the depth of the stirring blade 333. By adjusting the up and down position of the air outlet baffle 314 through the knob 322 and the adjusting rod 321, the size and density of the sprayed bubbles are different, thereby achieving different aeration effects and adapting to different sewage tanks.

[0050] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An aeration device for wastewater treatment, comprising a frame (1), characterized in that: It also includes a backwash ventilation component (2) and an aeration component (3). The frame (1) is equipped with an aeration component (3) for driving the gas and liquid to mix and generate bubbles and send them out. The upper end of the frame (1) is provided with an inlet filter component. The backwash ventilation assembly (2) includes a ventilation component (21) for supplying gas to the inside of the frame (1) and a backwash component (22) for cleaning the frame (1), and the ventilation component (21) and the backwash component (22) are connected to the frame (1).

2. The aeration device for wastewater treatment according to claim 1, characterized in that, The frame (1) includes a support (11), an outer shell (12), an inner shell (13), a filter screen (14), and multiple air outlet pipes (15). The outer shell (12) is fixedly installed on the upper end of the support (11), and the inner shell (13) is fixedly installed on the inner side of the outer shell (12) by a fastener. The filter screen (14) is fixedly installed on the upper end between the outer shell (12) and the inner shell (13). Multiple air outlet pipes (15) are evenly distributed on the outer side of the lower end of the outer shell (12). The air outlet pipes (15) are connected to the inner side of the outer shell (12). The support (11) is connected to the aeration assembly (3). The outer shell (12) is connected to the ventilation component (21) and the backwashing component (22). The inner shell (13) is connected to the aeration assembly (3). The filter screen (14) is the water inlet filtration component.

3. The aeration device for wastewater treatment according to claim 2, characterized in that, The ventilation component (21) includes a three-way air inlet pipe (211), a three-way valve (212), and an air inlet baffle (213). The three-way air inlet pipe (211) is fixedly installed on the outside of the outer shell (12). One end of the three-way air inlet pipe (211) is connected to the air supply equipment, and the other two ends of the three-way air inlet pipe (211) are fixedly connected to the side walls of the outer shell (12) and the inner shell (13), respectively. The three-way valve (212) is fixedly installed on the outside of the three-way air inlet pipe (211) to control the ventilation direction of the three-way air inlet pipe (211). The air inlet baffle (213) is fixedly installed on the lower end of the inner side of the outer shell (12) and is connected to the aeration component (3).

4. The aeration device for wastewater treatment according to claim 3, characterized in that, The air intake baffle (213) has multiple through holes for connecting the outer shell (12) and the inner shell (13).

5. The aeration device for wastewater treatment according to claim 3, characterized in that, The backwashing component (22) includes an annular tube (221) and multiple air nozzles (222). The annular tube (221) is fixedly installed on the inner wall of the outer shell (12). The multiple air nozzles (222) are evenly distributed and fixedly installed on the upper end of the annular tube (221). An annular cavity is formed between the annular tube (221) and the outer shell (12). One end of the three-way air inlet pipe (211) is connected to the inner cavity of the annular tube (221).

6. The aeration device for wastewater treatment according to claim 2, characterized in that, The aeration assembly (3) includes an air supply component (31), an adjustment component (32), and an agitation component (33). The air supply component (31) is connected to the adjustment component (32), the inner shell (13), and the air inlet baffle (213). The adjustment component (32) is connected to the air inlet baffle (213) and the support (11). The agitation component (33) is connected to the support (11).

7. The aeration device for wastewater treatment according to claim 6, characterized in that, The air supply component (31) includes a motor (311), a rotating shaft (312), multiple impellers (313), an air outlet baffle (314), and multiple slides (315). The motor (311) is fixedly installed on the upper end of the inner shell (13). The output end of the motor (311) is fixedly connected to the rotating shaft (312). The rotating shaft (312) is rotatably connected to the inner shell (13). The lower end of the rotating shaft (312) passes through the inner shell (13), the air outlet baffle (314), and the air inlet baffle (213) and is connected to the stirring assembly (33). The rotating shaft (312) is connected to the air outlet... The baffle (314) is rotated and slidably connected by a composite bearing. Multiple impellers (313) are located inside the inner shell (13). The impellers (313) are evenly distributed and fixedly installed on the outside of the rotating shaft (312). The exhaust baffle (314) is located below the inner shell (13). The lower end of the exhaust baffle (314) is connected to the adjusting component (32). The slide cylinder (315) is fixedly installed at the lower end of the inner shell (13) and is slidably connected to the exhaust baffle (314). The slide cylinder (315) is used to connect the inner side of the inner shell (13) and the lower part of the exhaust baffle (314).

8. The aeration device for wastewater treatment according to claim 7, characterized in that, A gap is formed between the outer side of the lower section of the air outlet baffle (314) and the air inlet baffle (213). The air outlet baffle (314) and the inner shell (13) are respectively provided with a plurality of through holes for accommodating the slide cylinder (315).

9. The aeration device for wastewater treatment according to claim 7, characterized in that, There are two adjustment components (32), which are symmetrically arranged on the left and right sides at the lower end of the air outlet baffle (314). The adjustment component (32) includes an adjustment rod (321) and a knob (322). The upper end of the adjustment rod (321) is fixedly connected to the air outlet baffle (314), and the lower end of the adjustment rod (321) passes through the air inlet baffle (213) and the bracket (11) and is threadedly connected to the knob (322). The upper end of the knob (322) is rotatably connected to the bracket (11).

10. The aeration device for wastewater treatment according to claim 7, characterized in that, The stirring assembly (33) includes a stirring shaft (331), bolts (332) and multiple stirring blades (333). The upper end of the stirring shaft (331) is splinedly connected to the rotating shaft (312). The lower end of the stirring shaft (331) passes through the bracket (11) and is sealed and rotatably connected to the bracket (11). Bolts (332) pass through the stirring shaft (331) and the rotating shaft (312) to fix the stirring shaft (331) and the rotating shaft (312). Multiple through holes for the mating bolts (332) are provided on the stirring shaft (331) for multi-level adjustment. Multiple stirring blades (333) are evenly distributed and fixedly installed on the outer side of the lower end of the stirring shaft (331).

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