Aeration sewage purification system

Abstract

The invention relates to the technical field of sewage purification, and discloses an aerated sewage purification system. A water pump is installed on the top of a partition, and the water pump is used to introduce sewage clarified liquid in a sedimentation tank into an aeration tank. A longitudinal driving shaft mechanism is arranged inside an air intake system, and a bottom stirring mechanism is arranged at the rear end of the air intake system. An upper impeller and a lower impeller are fixed at both ends of the upper end of the vertical driving shaft mechanism, and a filter screen cylinder mechanism is sleeved and fixed on the outer side of the vertical driving shaft mechanism. When air is introduced into the front end of the air intake system through an air pump, the longitudinal driving shaft mechanism is driven to rotate, and the air intake system introduces air to the bottom stirring mechanism, and the longitudinal driving shaft mechanism drives the bottom stirring mechanism to stir and aerate the sewage clarified liquid at the bottom of the aeration tank, thereby improving the oxygenation aeration efficiency of the sewage clarified liquid; at the same time, the sewage clarified liquid is made to convect up and down, thereby further accelerating the oxygenation aeration efficiency of the sewage clarified liquid; and the oxygenation aeration efficiency is improved by stirring the sewage clarified liquid in the middle layer.

Description

Technical Field

[0001] The invention relates to the technical field of sewage purification, in particular to an aerated sewage purification system. Background Art

[0002] In the sewage treatment process, certain methods and equipment are used to force air into the sewage, so that the sewage in the pool is in contact with the air and oxygenated, to prevent the suspended objects in the pool from sinking, to strengthen the contact between the organic matter in the pool and the microorganisms and dissolved oxygen, and to oxidize and decompose the organic matter in the sewage. This process of forcing oxygenation into the sewage is called aeration. A common method is to use an air pump to directly spray air into the bottom of the aeration tank, and at the same time drive the stirring paddle through the motor to extend into the aeration tank to stir the sewage, so as to achieve the aeration of sewage. This method not only requires two sets of equipment for aeration and stirring, but is usually effective for the aeration of the bottom of the aeration tank, but is not effective for the aeration of sewage at different heights in the entire aeration tank. For this reason, we have launched an aerated sewage purification system. Summary of the invention

[0003] The object of the present invention is to provide an aerated sewage purification system to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: an aerated sewage purification system, comprising a sedimentation tank and an aeration tank formed by a partition and an air intake system with a front end extending through the aeration tank, a water pump is installed on the top of the partition, and the water pump is used to introduce the sewage clarified liquid in the sedimentation tank into the aeration tank;

[0005] A longitudinal drive shaft mechanism is provided inside the air intake system, a bottom stirring mechanism is provided at the rear end of the air intake system, a vertical drive shaft mechanism driven by the longitudinal drive shaft mechanism is provided at the upper end of the rear portion of the air intake system, an upper impeller and a lower impeller are fixed at both ends of the upper end of the vertical drive shaft mechanism, and a filter cylinder mechanism is sleeved and fixed on the outer side of the vertical drive shaft mechanism;

[0006] An outer cylinder is sleeved on the outside of the filter cylinder mechanism, and the bottom of the outer cylinder is detachably fixed to the upper end of the rear of the air intake system. The two sides of the middle of the outer cylinder are movably connected with the top stirring gear mechanism through the bracket mechanism. The inner side of the top stirring gear mechanism extends into the outer cylinder and meshes with the outer side of the middle of the filter cylinder mechanism.

[0007] When the air is introduced into the front end of the air intake system through the air pump, the longitudinal drive shaft mechanism is driven to rotate, and the air intake system leads the air to the bottom stirring mechanism, and the longitudinal drive shaft mechanism drives the bottom stirring mechanism to stir and aerate the sewage clarified liquid at the bottom of the aeration tank;

[0008] At the same time, the longitudinal drive shaft mechanism drives the filter screen drum mechanism, the upper impeller and the lower impeller to rotate synchronously through the vertical drive shaft mechanism, so that the upper impeller and the lower impeller introduce the clarified sewage liquid in the aeration tank into the middle part of the outer cylinder from the upper and lower directions, and mix it with the air entering the middle part of the outer cylinder through the air intake system for aeration. The filter screen drum mechanism rotates to stir and filter the clarified sewage liquid in the aeration tank. At this time, the rotation of the filter screen drum mechanism also drives the top stirring gear mechanism to stir the clarified sewage liquid flowing out through the middle part of the outer cylinder.

[0009] Preferably, the air intake system comprises an air intake pipe extending through an opening at the front end of the bottom of the aeration tank and a box body fixed at the rear end of the air intake pipe;

[0010] The longitudinal drive shaft mechanism includes a longitudinal drive shaft disposed inside the air intake pipe and the housing, a drive impeller located inside the air intake pipe and fixed at the front end of the longitudinal drive shaft, a worm disposed on the longitudinal drive shaft and located inside the housing, a worm wheel meshed with the side of the worm wheel, and a vertical connecting shaft fixed at the middle of the upper end of the worm wheel;

[0011] The top of the vertical connecting shaft penetrates and extends out of the box body, and a first bearing embedded in the top of the box body is sleeved on the vertical connecting shaft.

[0012] Preferably, a gas collecting cylinder is embedded in the air intake pipe, the inner diameter of the gas collecting cylinder gradually decreases from front to back, the longitudinal drive shaft passes through the middle of the gas collecting cylinder, and the rear end of the gas collecting cylinder is connected to the gas collecting cavity inside the air intake pipe;

[0013] The rear end and top of the air intake pipe are both provided with air collecting pipes connected to the air collecting cavity. The side air collecting pipes are connected to side branch pipes distributed up and down, and the top air collecting pipe is connected to top branch pipes distributed left and right and a top connecting pipe located above the top branch pipe.

[0014] Preferably, the bottom stirring mechanism comprises a fixed plate fixed at the rear end of the box body, raised plates evenly spaced on the sides of the fixed plate, a shaft passing through the raised plates, a first stirring plate fixed on the front end surface of the shaft, a first gear fixed at the rear end of the shaft, and a plurality of intermediate gears meshing between the first gears;

[0015] The rear end of the longitudinal drive shaft passes through the circular hole in the middle of the box and the fixed plate and is fixed to the middle of the intermediate gear, and the rear end of the longitudinal drive shaft extends through the middle of the intermediate gear and is connected to the second stirring plate. The longitudinal drive shaft is also sleeved with a second bearing embedded in the inner wall of the rear end of the box;

[0016] The rear ends of the two groups of side branch pipes distributed up and down extend to the front of the corresponding first stirring plate, the rear ends of the two groups of top branch pipes distributed left and right extend to the front of the corresponding first stirring plate, and the top connecting pipe is connected to the middle of the outer cylinder;

[0017] The upper end of the outer cylinder is provided with a top hole, the bottom of the outer cylinder is provided with two groups of symmetrical slots, the middle of the slots is provided with a plug-in block, and the plug-in block is inserted into the connecting seat at the top of the box body.

[0018] Preferably, the vertical drive shaft mechanism comprises a vertical drive shaft, a limit plate fixed at the lower end of the vertical drive shaft, two groups of lower plug-in columns fixed at the lower end of the limit plate, two groups of upper plug-in columns fixed at the top of the vertical drive shaft, and a plug plate connected to the side of the vertical drive shaft;

[0019] The lower plug-in column passes through the lower impeller and is inserted into the vertical connecting shaft;

[0020] The filter screen cylinder mechanism comprises a filter screen cylinder sleeved on the outside of the vertical drive shaft and an outer gear ring fixed on the outside of the middle of the filter screen cylinder. A plurality of groups of spoilers with equal spacing are arranged around the inner wall of the filter screen cylinder, and the upper and lower spoilers are also distributed with equal spacing.

[0021] The plug plate is inserted between corresponding spoilers;

[0022] After the top of the vertical drive shaft extends out of the filter screen cylinder, the upper plug-in column at the top of the vertical drive shaft is inserted into the upper impeller, and the bottom of the filter screen cylinder is seated on the limit plate;

[0023] The lower impeller is located in the bottom of the outer cylinder, and the upper impeller is located in the top of the outer cylinder.

[0024] Preferably, the support mechanism comprises a U-shaped frame and two groups of L-shaped plates connected to the inner ends of the U-shaped frame, and the inner ends of the two groups of L-shaped plates are respectively fixed to the upper and lower ends of the drainage groove in the middle of the outer tube;

[0025] The top stirring gear mechanism comprises a second gear movably connected to the inside of the U-shaped frame through a first pin shaft, a connecting cylinder fixed in the middle of the upper and lower ends of the second gear, a third stirring plate connected to the side of the connecting cylinder, and a third gear movably connected between the upper and lower L-shaped plates through a second pin shaft;

[0026] The two ends of the first pin extend from the inside of the corresponding connecting tube and then penetrate the U-shaped frame;

[0027] The inner end of the third gear extends into the inner part of the outer cylinder through the drainage groove and then meshes with the outer gear ring, and the outer end of the third gear meshes with the inner end of the corresponding second gear.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows: when the air is introduced into the front end of the air intake system of the present invention through the air pump, the longitudinal drive shaft mechanism is driven to rotate, the air intake system leads the air to the bottom stirring mechanism, and the longitudinal drive shaft mechanism drives the bottom stirring mechanism to stir and aerate the sewage clarified liquid at the bottom of the aeration tank, thereby improving the oxygenation aeration efficiency of the sewage clarified liquid;

[0029] At the same time, the longitudinal drive shaft mechanism drives the filter cylinder mechanism, the upper impeller and the lower impeller to rotate synchronously through the vertical drive shaft mechanism, so that the upper impeller and the lower impeller introduce the sewage clarified liquid in the aeration tank into the middle part of the outer cylinder from the upper and lower directions, and mix and aerate with the air entering the middle part of the outer cylinder through the air intake system, so that the sewage clarified liquid performs up and down convection, further accelerating the oxygenation aeration efficiency of the sewage clarified liquid;

[0030] The filter cylinder mechanism rotates to stir and filter the sewage clarified liquid in the aeration tank. At this time, the rotation of the filter cylinder mechanism also drives the top stirring gear mechanism to stir the sewage clarified liquid flowing out through the middle of the outer cylinder, and again stirs the sewage clarified liquid in the middle layer to improve the oxygenation aeration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the exploded structure of the whole of the present invention and the aeration tank assembly;

[0032] Figure 2 It is a schematic diagram of the three-dimensional structure of the air intake system of the present invention;

[0033] Figure 3 It is a schematic diagram of the exploded structure of the bottom stirring mechanism of the present invention;

[0034] Figure 4 It is a schematic diagram of the exploded structure of the longitudinal drive shaft mechanism, the vertical drive shaft mechanism, the filter cylinder mechanism and the top stirring gear mechanism of the present invention;

[0035] Figure 5 It is a schematic diagram of the exploded structure of the outer cylinder and the bracket mechanism of the present invention;

[0036] Figure 6 It is a schematic diagram of the three-dimensional structure of the air intake system, the bottom stirring mechanism and the longitudinal drive shaft mechanism assembled according to the present invention;

[0037] Figure 7 A schematic cross-sectional view of the gas collecting cylinder and the longitudinal drive shaft of the present invention;

[0038] Figure 8 It is a schematic diagram of the three-dimensional structure of the air intake system, the bottom stirring mechanism, the longitudinal drive shaft mechanism, the filter cylinder mechanism and the vertical drive shaft mechanism of the present invention;

[0039] Fig. 9 It is a schematic diagram of the exploded structure of the outer cylinder, the bracket mechanism, the top stirring gear mechanism and the filter cylinder mechanism of the present invention;

[0040] Fig.10 It is a schematic diagram of the three-dimensional structure of the outer cylinder, the support mechanism and the top stirring gear mechanism assembled in the present invention;

[0041] Fig.11It is a schematic diagram of the three-dimensional structure of the overall assembly of the present invention;

[0042] Fig.12 It is a schematic diagram of the three-dimensional structure of the connection between the outer gear ring, the third gear and the second gear of the present invention;

[0043] Fig.13 It is a schematic diagram of the three-dimensional structure of the present invention as a whole and the aeration tank assembly.

[0044] In the figure: 1, sedimentation tank; 2, aeration tank; 3, water pump; 4, opening; 5, air intake system; 51, air collecting cylinder; 52, air intake pipe; 53, box; 54, side branch pipe; 55, top branch pipe; 56, top connecting pipe; 57, air collecting pipe; 58, connecting seat; 59, air collecting chamber; 6, bottom stirring mechanism; 61, fixed plate; 62, intermediate gear; 63, first gear; 64, raised plate; 65, shaft; 66, first stirring plate; 67, second stirring plate; 68, round hole; 7, longitudinal drive shaft mechanism; 71, worm; 72, longitudinal drive shaft; 73, driving impeller; 74, second bearing; 75, worm wheel; 76, first bearing; 77, Vertical connecting shaft; 8, filter screen cylinder mechanism; 81, filter screen cylinder; 82, outer gear ring; 83, spoiler; 9, vertical drive shaft mechanism; 91, vertical drive shaft; 92, plug plate; 93, limit plate; 94, lower plug column; 95, upper plug column; 10, top stirring gear mechanism; 101, third gear; 102, second gear; 103, third stirring plate; 104, connecting cylinder; 11, outer cylinder; 111, slot; 112, plug block; 113, drain trough; 114, top hole; 12, bracket mechanism; 120, U-shaped frame; 121, L-shaped plate; 122, first pin shaft; 123, second pin shaft; 13, lower impeller; 14, upper impeller. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] Example:

[0047] See also Figure 1-13 , the present invention provides a technical solution:

[0048] Embodiment 1:

[0049] An aerated sewage purification system, comprising a sedimentation tank 1 and an aeration tank 2 formed by a partition, and an air intake system 5 whose front end penetrates and extends out of the aeration tank 2, a water pump 3 is installed on the top of the partition, a water inlet on the left side of the water pump 3 is connected to a water diversion pipe extending into the sewage clarified liquid at the top of the sedimentation tank 1, and a water outlet on the right side of the water pump 3 is connected to a water outlet pipe extending into the bottom of the aeration tank 2, and the water pump 3 is used to introduce the sewage clarified liquid in the sedimentation tank 1 into the aeration tank 2;

[0050] The air intake system 5 includes an air intake pipe 52 extending through the opening 4 at the front end of the bottom of the aeration tank 2 and a box 53 fixed at the rear end of the air intake pipe 52;

[0051] A longitudinal drive shaft mechanism 7 is provided inside the air intake system 5, and the longitudinal drive shaft mechanism 7 includes a longitudinal drive shaft 72 provided inside the air intake pipe 52 and the housing 53, a driving impeller 73 located inside the air intake pipe 52 and fixed at the front end of the longitudinal drive shaft 72, a worm 71 located inside the housing 53 and provided on the longitudinal drive shaft 72, a worm wheel 75 meshing with the side of the worm 71, and a vertical connecting shaft 77 fixed at the middle of the upper end of the worm wheel 75;

[0052] The top of the vertical connecting shaft 77 extends through the box body 53, and a first bearing 76 embedded in the top of the box body 53 is sleeved on the vertical connecting shaft 77. When the longitudinal driving shaft 72 rotates through the worm 71 and the worm wheel 75 to drive the vertical connecting shaft 77 to rotate, the first bearing 76 is provided to make the rotation of the vertical connecting shaft 77 smoother;

[0053] The longitudinal drive shaft 72 is also sleeved with a second bearing 74 embedded in the inner wall of the rear end of the box body 53, and the connection between the box body 53 and the air intake pipe 52 is also embedded with a third bearing sleeved on the longitudinal drive shaft 72. When high-pressure air enters through the front end of the air intake pipe 52 and drives the driving impeller 73 to drive the longitudinal drive shaft 72 to rotate, the second bearing 74 and the third bearing are arranged to make the rotation of the longitudinal drive shaft 72 smoother.

[0054] The air collecting cylinder 51 is embedded in the air intake pipe 52, and the inner diameter of the air collecting cylinder 51 gradually decreases from front to back. The longitudinal drive shaft 72 passes through the middle of the air collecting cylinder 51, and the rear end of the air collecting cylinder 51 is connected to the air collecting cavity 59 inside the air intake pipe 52;

[0055] After the high-pressure air drives the driving impeller 73 to rotate the longitudinal driving shaft 72, the speed of the high-pressure air decreases. At this time, after the high-pressure air enters the air collecting cylinder 51, the speed of the high-pressure air entering the air collecting chamber 59 through the rear end of the air collecting cylinder 51 can be accelerated, so that the high-pressure air can still be guaranteed to be ejected from the side branch pipe 54, the top branch pipe 55 and the top connecting pipe 56. Therefore, after the high-pressure air is ejected and contacts with the sewage clarified liquid, it can ensure the impact on the sewage clarified liquid, accelerate the mixing of oxygen in the high-pressure air and the sewage clarified liquid, and improve the aeration effect of the high-pressure air on the sewage clarified liquid.

[0056] The air intake pipe 52 has air collecting pipes 57 connected to the air collecting chamber 59 on both sides of the rear end and the top. The side air collecting pipes 57 are connected to side branch pipes 54 distributed up and down. The top air collecting pipe 57 is connected to top branch pipes 55 distributed left and right and a top connecting pipe 56 located above the top branch pipes 55.

[0057] The rear end of the air intake system 5 is provided with a bottom stirring mechanism 6, which includes a fixed plate 61 fixed to the rear end of the box body 53, raised plates 64 distributed at equal intervals on the sides of the fixed plate 61, a shaft 65 passing through the raised plate 64, a first stirring plate 66 fixed to the front end surface of the shaft 65, a first gear 63 fixed to the rear end of the shaft 65, and a plurality of intermediate gears 62 meshing between the first gears 63;

[0058] The rear end of the longitudinal drive shaft 72 passes through the box body 53 and the circular hole 68 in the middle of the fixed plate 61 and is fixed to the middle of the intermediate gear 62. The rear end of the longitudinal drive shaft 72 extends through the middle of the intermediate gear 62 and is connected to the second stirring plate 67.

[0059] The rotation of the longitudinal drive shaft 72 directly drives the rotation of the second stirring plate 67 and the intermediate gear 62. When the second stirring plate 67 rotates, the sewage clarified liquid at the bottom of the aeration tank 2 can be stirred. The rotation of the intermediate gear 62 drives the shaft 65 to rotate through the first gear 63. The rotation of the shaft 65 drives the first stirring plate 66 thereon to rotate, so that the different first stirring plates 66 can also stir the sewage clarified liquid at the bottom of the aeration tank 2.

[0060] The rear ends of the two groups of side branch pipes 54 distributed vertically extend to the front of the corresponding first stirring plate 66, and the rear ends of the two groups of top branch pipes 55 distributed horizontally extend to the front of the corresponding first stirring plate 66. The top connecting pipe 56 is connected to the middle of the outer cylinder 11.

[0061] While the first stirring plate 66 is stirring the sewage clarified liquid at the bottom of the aeration tank 2, high-pressure air is ejected to the front of the first stirring plate 66 through the side branch pipe 54 and the top branch pipe 55, so that the first stirring plate 66 can quickly oxygenate and aerate the sewage clarified liquid at the bottom of the aeration tank 2;

[0062] The upper end of the outer cylinder 11 is provided with a top hole 114, and the bottom of the outer cylinder 11 is provided with two groups of symmetrical slots 111. When the vertical driving shaft 91 of the vertical driving shaft mechanism 9 drives the lower impeller 13 and the upper impeller 14 to rotate at a high speed inside the outer cylinder 11, the upper impeller 14 and the lower impeller 13 respectively form negative pressure at the upper and lower ends inside the outer cylinder 11, so that the sewage clarified liquid at the top of the aeration tank 2 is sucked into the outer cylinder 11 through the top hole 114, and the sewage clarified liquid at the bottom of the aeration tank 2 is sucked into the outer cylinder 11 through the slots 111, until the sewage clarified liquid in the outer cylinder 11 is discharged through the drain groove 113;

[0063] A plug-in block 112 is provided in the middle of the slot 111, and the plug-in block 112 is inserted into the connection seat 58 at the top of the box body 53. Such a setting can realize the rapid disassembly of the outer cylinder 11 when the outer cylinder 11 is lifted upward. After the outer cylinder 11 is disassembled, it is convenient to rinse or replace the filter cylinder 81.

[0064] A vertical drive shaft mechanism 9 driven by a longitudinal drive shaft mechanism 7 is provided at the upper rear end of the air intake system 5. An upper impeller 14 and a lower impeller 13 are fixed at both ends of the upper end of the vertical drive shaft mechanism 9. A filter cylinder mechanism 8 is sleeved and fixed on the outer side of the vertical drive shaft mechanism 9.

[0065] The vertical drive shaft mechanism 9 includes a vertical drive shaft 91, a limit plate 93 fixed at the lower end of the vertical drive shaft 91, two sets of lower plug-in columns 94 fixed at the lower end of the limit plate 93, two sets of upper plug-in columns 95 fixed at the top of the vertical drive shaft 91, and a plug plate 92 connected to the side of the vertical drive shaft 91;

[0066] The lower plug-in column 94 passes through the lower impeller 13 and is inserted into the vertical connecting shaft 77;

[0067] The filter screen cylinder mechanism 8 comprises a filter screen cylinder 81 sleeved on the outside of the vertical drive shaft 91 and an outer gear ring 82 fixed on the outside of the middle of the filter screen cylinder 81. A plurality of groups of spoilers 83 with equal spacing are arranged around the inner wall of the filter screen cylinder 81. The upper and lower spoilers 83 are also distributed with equal spacing.

[0068] After the top of the vertical drive shaft 91 extends out of the filter screen cylinder 81, the upper plug-in column 95 at the top of the vertical drive shaft 91 is inserted into the upper impeller 14, and the bottom of the filter screen cylinder 81 is seated on the limiting plate 93;

[0069] The lower impeller 13 is located in the bottom of the outer cylinder 11 , and the upper impeller 14 is located in the top of the outer cylinder 11 .

[0070] When the longitudinal drive shaft 72 rotates through the worm 71 and the worm wheel 75 to drive the vertical connecting shaft 77 to rotate, the vertical drive shaft 91 also rotates synchronously with the vertical connecting shaft 77, and the plug plate 92 is inserted between the corresponding spoiler plates 83. This arrangement allows the filter screen cylinder 81 to rotate synchronously through the plug plate 92 when the vertical drive shaft 91 rotates, so that the filter screen cylinder 81 rotates to filter the sewage clarified liquid, thereby improving the filtering efficiency;

[0071] When the clarified sewage liquid at the top of the aeration tank 2 is sucked into the outer cylinder 11 through the top hole 114 and the clarified sewage liquid at the bottom of the aeration tank 2 is sucked into the outer cylinder 11 through the slot 111, a portion of the clarified sewage liquid in the outer cylinder 11 will enter the filter screen cylinder 81 and contact the spoiler 83 on the inner wall of the filter screen cylinder 81. Therefore, under the disturbing effect of the spoiler 83 on the clarified sewage liquid, the mixing efficiency of the clarified sewage liquid and the high-pressure air entering the outer cylinder 11 can be further improved, thereby improving the oxygenation aeration efficiency of the clarified sewage liquid.

[0072] The outer side of the filter cylinder mechanism 8 is sleeved with an outer cylinder 11, the bottom of the outer cylinder 11 is detachably fixed to the upper end of the rear part of the air intake system 5, and the two sides of the middle part of the outer cylinder 11 are movably connected with the top stirring gear mechanism 10 through the bracket mechanism 12, and the inner side of the top stirring gear mechanism 10 extends into the outer cylinder 11 and meshes with the outer side of the middle part of the filter cylinder mechanism 8;

[0073] The support mechanism 12 includes a U-shaped frame 120 and two groups of L-shaped plates 121 connected to the inner ends of the U-shaped frame 120. The inner ends of the two groups of L-shaped plates 121 are respectively fixed to the upper and lower ends of the drainage groove 113 in the middle of the outer tube 11;

[0074] The top stirring gear mechanism 10 comprises a second gear 102 movably connected to the inside of the U-shaped frame 120 via a first pin shaft 122, a connecting cylinder 104 fixed at the middle of the upper and lower ends of the second gear 102, a third stirring plate 103 connected to the side of the connecting cylinder 104, and a third gear 101 movably connected between the upper and lower sets of L-shaped plates 121 via a second pin shaft 123;

[0075] Both ends of the first pin shaft 122 extend from the corresponding connecting tube 104 and then penetrate the U-shaped frame 120;

[0076] The inner end of the third gear 101 extends into the outer cylinder 11 through the drainage groove 113 and meshes with the outer gear ring 82, and the outer end of the third gear 101 meshes with the inner end of the corresponding second gear 102. This arrangement allows the left and right sets of third gears 101 to limit the filter screen cylinder 81 through the outer gear ring 82, that is, when the filter screen cylinder 81 rotates, it can ensure that the filter screen cylinder 81 rotates in a vertical state, avoiding the filter screen cylinder 81 from shaking and contacting and rubbing with the inner wall of the outer cylinder 11.

[0077] When the filter screen cylinder 81 rotates, the third gear 101 is driven to rotate through the outer gear ring 82, so that the third gear 101 drives the second gear 102 to rotate, and the third stirring plate 103 on the second gear 102 rotates, so that after the sewage clarified liquid in the outer cylinder 11 is discharged through the drainage groove 113, it can also be stirred under the rotation of the third stirring plate 103, which can further accelerate the oxygenation and aeration of the sewage clarified liquid.

[0078] When the outer cylinder 11 is immersed in the sewage clarified liquid in the aeration tank 2, the top stirring gear mechanism 10 is at the middle height of the sewage clarified liquid, so that when the third stirring plate 103 of the top stirring gear mechanism 10 rotates, the sewage clarified liquid at the middle height can be stirred.

[0079] When the air is introduced into the front end of the air intake system 5 through the air pump, the longitudinal drive shaft mechanism 7 is driven to rotate, and the air intake system 5 leads the air to the bottom stirring mechanism 6, and the longitudinal drive shaft mechanism 7 drives the bottom stirring mechanism 6 to stir and aerate the sewage clarified liquid at the bottom of the aeration tank 2;

[0080] At the same time, the longitudinal drive shaft mechanism 7 drives the filter screen drum mechanism 8, the upper impeller 14 and the lower impeller 13 to rotate synchronously through the vertical drive shaft mechanism 9, so that the upper impeller 14 and the lower impeller 13 introduce the clarified sewage liquid in the aeration tank 2 into the middle part of the outer cylinder 11 from the upper and lower directions, and mix it with the air entering the middle part of the outer cylinder 11 through the air intake system 5 for aeration. The filter screen drum mechanism 8 rotates to stir and filter the clarified sewage liquid in the aeration tank 2. At this time, the rotation of the filter screen drum mechanism 8 also drives the top stirring gear mechanism 10 to stir the clarified sewage liquid flowing out through the middle part of the outer cylinder 11.

[0081] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An aerated sewage purification system, comprising a sedimentation tank and an aeration tank formed by a partition and an air intake system with a front end extending through the aeration tank, characterized in that: A water pump is installed on the top of the partition, and the water pump is used to introduce the sewage clarified liquid in the sedimentation tank into the aeration tank; A longitudinal drive shaft mechanism is provided inside the air intake system, a bottom stirring mechanism is provided at the rear end of the air intake system, a vertical drive shaft mechanism driven by the longitudinal drive shaft mechanism is provided at the upper end of the rear portion of the air intake system, an upper impeller and a lower impeller are fixed at both ends of the upper end of the vertical drive shaft mechanism, and a filter cylinder mechanism is sleeved and fixed on the outer side of the vertical drive shaft mechanism; An outer cylinder is sleeved on the outside of the filter cylinder mechanism, and the bottom of the outer cylinder is detachably fixed to the upper end of the rear of the air intake system. The two sides of the middle of the outer cylinder are movably connected with the top stirring gear mechanism through the bracket mechanism. The inner side of the top stirring gear mechanism extends into the outer cylinder and meshes with the outer side of the middle of the filter cylinder mechanism. When the air is introduced into the front end of the air intake system through the air pump, the longitudinal drive shaft mechanism is driven to rotate, and the air intake system leads the air to the bottom stirring mechanism, and the longitudinal drive shaft mechanism drives the bottom stirring mechanism to stir and aerate the sewage clarified liquid at the bottom of the aeration tank; At the same time, the longitudinal drive shaft mechanism drives the filter screen cylinder mechanism, the upper impeller and the lower impeller to rotate synchronously through the vertical drive shaft mechanism, so that the upper impeller and the lower impeller introduce the sewage clarified liquid in the aeration tank into the middle part of the outer cylinder from the upper and lower directions, and mix it with the air entering the middle part of the outer cylinder through the air intake system for aeration. The filter screen cylinder mechanism rotates to stir and filter the sewage clarified liquid in the aeration tank. At this time, the rotation of the filter screen cylinder mechanism also drives the top stirring gear mechanism to stir the sewage clarified liquid flowing out through the middle part of the outer cylinder. The air intake system includes an air intake pipe extending through an opening at the front end of the bottom of the aeration tank and a box body fixed at the rear end of the air intake pipe; The longitudinal drive shaft mechanism includes a longitudinal drive shaft disposed inside the air intake pipe and the housing, a drive impeller located inside the air intake pipe and fixed at the front end of the longitudinal drive shaft, a worm disposed on the longitudinal drive shaft and located inside the housing, a worm wheel meshed with the side of the worm wheel, and a vertical connecting shaft fixed at the middle of the upper end of the worm wheel; The top of the vertical connecting shaft extends through the box body, and a first bearing embedded in the top of the box body is sleeved on the vertical connecting shaft; The vertical drive shaft mechanism includes a vertical drive shaft, a limit plate fixed at the lower end of the vertical drive shaft, two groups of lower plug-in columns fixed at the lower end of the limit plate, two groups of upper plug-in columns fixed at the top of the vertical drive shaft, and a plug plate connected to the side of the vertical drive shaft; The lower plug-in column passes through the lower impeller and is inserted into the vertical connecting shaft; The filter screen cylinder mechanism comprises a filter screen cylinder sleeved on the outside of the vertical drive shaft and an outer gear ring fixed on the outside of the middle of the filter screen cylinder. A plurality of groups of spoilers with equal spacing are arranged around the inner wall of the filter screen cylinder, and the upper and lower spoilers are also distributed with equal spacing. The plug plate is inserted between corresponding spoilers; After the top of the vertical drive shaft extends out of the filter screen cylinder, the upper plug-in column at the top of the vertical drive shaft is inserted into the upper impeller, and the bottom of the filter screen cylinder is seated on the limit plate; The lower impeller is located in the bottom of the outer cylinder, and the upper impeller is located in the top of the outer cylinder; The support mechanism includes a U-shaped frame and two groups of L-shaped plates connected to the inner ends of the U-shaped frame, and the inner ends of the two groups of L-shaped plates are respectively fixed to the upper and lower ends of the drainage groove in the middle of the outer tube; The top stirring gear mechanism comprises a second gear movably connected to the inside of the U-shaped frame through a first pin shaft, a connecting cylinder fixed in the middle of the upper and lower ends of the second gear, a third stirring plate connected to the side of the connecting cylinder, and a third gear movably connected between the upper and lower L-shaped plates through a second pin shaft; The two ends of the first pin extend from the inside of the corresponding connecting tube and then penetrate the U-shaped frame; The inner end of the third gear extends into the inner part of the outer cylinder through the drainage groove and then meshes with the outer gear ring, and the outer end of the third gear meshes with the inner end of the corresponding second gear.

2. The aerated sewage purification system according to claim 1, characterized in that: A gas collecting cylinder is embedded in the air intake pipe, the inner diameter of which gradually decreases from front to back, the longitudinal drive shaft passes through the middle of the gas collecting cylinder, and the rear end of the gas collecting cylinder is connected to the gas collecting cavity inside the air intake pipe; The rear end and top of the air intake pipe are both provided with air collecting pipes connected to the air collecting cavity. The side air collecting pipes are connected to side branch pipes distributed up and down, and the top air collecting pipe is connected to top branch pipes distributed left and right and a top connecting pipe located above the top branch pipe.

3. The aerated sewage purification system according to claim 2, characterized in that: The bottom stirring mechanism comprises a fixed plate fixed at the rear end of the box body, raised plates distributed at equal intervals on the sides of the fixed plate, a shaft passing through the raised plates, a first stirring plate fixed on the front end surface of the shaft, a first gear fixed at the rear end of the shaft, and a plurality of intermediate gears meshing between the first gears; The rear end of the longitudinal drive shaft passes through the circular hole in the middle of the box and the fixed plate and is fixed to the middle of the intermediate gear, and the rear end of the longitudinal drive shaft extends through the middle of the intermediate gear and is connected to the second stirring plate. The longitudinal drive shaft is also sleeved with a second bearing embedded in the inner wall of the rear end of the box; The rear ends of the two groups of side branch pipes distributed up and down extend to the front of the corresponding first stirring plate, the rear ends of the two groups of top branch pipes distributed left and right extend to the front of the corresponding first stirring plate, and the top connecting pipe is connected to the middle of the outer cylinder; The upper end of the outer cylinder is provided with a top hole, the bottom of the outer cylinder is provided with two groups of symmetrical slots, the middle of the slots is provided with a plug-in block, and the plug-in block is inserted into the connecting seat at the top of the box body.

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