Self-collection type aeration separation mechanism for sewage treatment

Abstract

A self-collection type aeration separation mechanism for sewage treatment relates to the technical field of sewage treatment and comprises an aeration tank, a collection assembly and an oxygenation assembly are arranged on the upper inner wall and the lower inner wall of the aeration tank respectively, the oxygenation assembly is communicated with an external air blower, and a plurality of transfer assemblies communicated with an inner cavity of the aeration tank are evenly distributed on the outer wall of the aeration tank in the circumferential direction. An adding valve and an exhaust valve which are communicated with the inner cavity of the aeration tank are fixedly arranged on the outer wall of the aeration tank between the collecting component and the oxygenation component; a drain valve which is communicated with the inner cavity of the aeration tank is fixedly arranged at the bottom of the aeration tank; the collecting assembly comprises a material collecting barrel rotationally connected to the upper inner wall of the aeration tank, the top of the material collecting barrel is open, and the bottom of the material collecting barrel is of a circular truncated cone-shaped structure. The problem of poor distribution uniformity of activated sludge of existing aeration separation equipment for sewage treatment is solved; the action area of activated sludge on sewage is small. And the recycling process of the activated sludge is tedious. The oxygen content in the sewage is not uniform.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to an aeration separation mechanism for self-collecting sewage treatment. Background Art

[0002] Sewage treatment is the process of purifying sewage to meet the water quality requirements for discharge into a certain water body or reuse. Sewage treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscape, medical care, catering, etc., and is increasingly entering the daily life of ordinary people. The methods of sewage treatment mainly include three categories: physical method, chemical method and biological method. Among them, the activated sludge method in the biological method and its derivative improved process are the most widely used methods for treating sewage. The activated sludge method is a biological treatment method for wastewater with activated sludge as the main body. This technology mixes wastewater with activated sludge and aerates it, and uses the biological coagulation, adsorption and oxidation of activated sludge to decompose and remove organic pollutants in sewage. The activated sludge is then separated from the water and returned to the equipment for reuse.

[0003] The existing aeration and separation equipment for sewage treatment has gradually exposed its shortcomings during use, mainly in the following aspects: First, the distribution uniformity of activated sludge is poor. Specifically, during the process of activated sludge purification of sewage, small activated sludge particles will aggregate to form larger clusters. Therefore, the activated sludge appears as flocculent particles in the sewage, also known as flocs. Activated sludge flocs will flocculate and precipitate in the sewage. During the sewage purification process, the amount of activated sludge at the bottom of the equipment is much larger than the amount of activated sludge at the top of the equipment. Therefore, the distribution uniformity of activated sludge in the equipment is poor, affecting the purification effect and efficiency of the sewage.

[0004] Second, the area of ​​action of activated sludge on sewage is small. Specifically, small activated sludge particles in sewage will continue to aggregate to form larger clusters. After the activated sludge particles aggregate, the overall contact area between the activated sludge particles and sewage becomes smaller, and the area of ​​action of the activated sludge particles on sewage becomes smaller. Therefore, the larger the volume of the activated sludge flocs, the smaller the overall contact area between the activated sludge and sewage, and the smaller the area of ​​action of the activated sludge on sewage, which in turn affects the speed of sewage purification.

[0005] Third, the recycling process of activated sludge is complicated. Specifically, activated sludge can be reused. After the sewage is purified, the activated sludge and sewage in the aeration equipment need to be discharged to the sedimentation equipment for sedimentation. After the sedimentation is completed, the activated sludge is separated from the sewage, and then the separated activated sludge is collected and added to the aeration equipment again for use. In the process of continuous sewage purification, the activated sludge needs to be separated and transferred back and forth, so the recycling process of activated sludge is complicated.

[0006] Fourth, the oxygen content in the sewage is uneven. Specifically, the oxygenation component of the existing aeration equipment is installed at the bottom. The oxygenation component continuously transports air to the sewage in the equipment. The air entering the sewage forms tiny bubbles and moves upward. During the upward movement of the bubbles, the sewage is oxygenated, thereby providing the required oxygen for the activated sludge to oxidize organic pollutants. During the upward movement of the bubbles, the internal oxygen is gradually consumed. Therefore, when the bubbles move to the upper area of ​​the sewage, the internal oxygen content is low, and the sewage in the upper area is not sufficiently oxygenated, resulting in uneven oxygen content in the sewage, affecting the oxidation effect of the activated sludge on organic pollutants.

[0007] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0008] In view of the defects in the prior art, the technical problem to be solved by the present invention is to provide a self-collecting aeration separation mechanism for sewage treatment, which can collect the activated sludge settled at the bottom and re-add it evenly to the upper area of ​​the sewage, so that the activated sludge in the device circulates vertically in the sewage, realizing the function of evenly distributing the activated sludge in the sewage, and improving the purification effect and purification efficiency of the sewage; The equipment can also break up the activated sludge to prevent the activated sludge from agglomerating to form large flocs, thereby increasing the contact area between the activated sludge and the sewage, and further increasing the area of ​​action of the activated sludge on the sewage, thereby accelerating the purification of the sewage. The equipment can also separate sewage from activated sludge without transferring sewage and activated sludge, realizing the function of self-collection of activated sludge and simplifying the recycling process of activated sludge; The equipment can also evenly add oxygen to the sewage, thereby increasing the oxygen content and the uniformity of the oxygen content in the sewage, making the oxygen in the sewage sufficient and uniform, and improving the oxidation effect of activated sludge on organic pollutants.

[0009] To solve the above problems, the present invention provides the following technical solutions: An aeration and separation mechanism for self-collecting sewage treatment comprises an aeration tank, wherein the upper inner wall and the lower inner wall of the aeration tank are respectively provided with a collection component and an oxygenation component, the oxygenation component is connected to an external blower, a plurality of transfer components connected to the inner cavity of the aeration tank are uniformly distributed along the circumference of the outer wall of the aeration tank, an addition valve and an exhaust valve connected to the inner cavity of the aeration tank are fixedly provided at a position of the outer wall of the aeration tank between the collection component and the oxygenation component, and a drainage valve connected to the inner cavity of the aeration tank is fixedly provided at the bottom of the aeration tank.

[0010] The top of the support plate is arranged on the bottom of the support plate, and the top of the support plate is arranged in a conformal relationship with the bottom of the collection barrel and frictionally abuts against the bottom of the collection barrel. A collecting hopper is fixedly arranged on the bottom of the support plate, and a discharge hopper is coaxially fixedly connected to the position of the inner wall of the aeration tank below the collection hopper, and the upper port of the discharge hopper is fixedly connected to the lower port of the collection hopper. The inner bottom of the collection barrel is evenly distributed with two vertically penetrating material passing grooves along the circumferential direction, and the position of the bottom of the support plate located in the collection hopper is evenly distributed with two mud discharge holes, two separation holes and two material passing holes along the circumferential direction. The mud discharge holes, separation holes and material passing holes are alternately arranged along the circumferential direction and all vertically penetrate the support plate. The diameters of the mud discharge holes, separation holes and material passing holes are the same as the diameter of the material passing grooves, and the inner wall of the separation hole The top of the support plate is provided with a rotating tube which is rotatable, and the upper end of the rotating tube passes through the collecting barrel and is rotatably connected to the top of the aeration tank. The rotating tube is rotatably connected to the collecting barrel, and the upper end of the rotating tube passes through the collecting barrel upward and is rotatably connected to the top of the aeration tank. The rotating tube is rotatably connected to the collecting barrel, and the outer wall of the rotating tube is located in the collecting barrel. A plurality of scrapers are evenly distributed along the circumferential direction with friction contact with the inner wall of the collecting barrel. A rotating column is coaxially provided in the rotating tube and is rotatably connected with the inner wall of the collecting barrel. The bottom end of the rotating column downwardly passes through the support plate and the collecting barrel and extends into the discharge hopper. The outer wall of the rotating column is located in the discharge hopper. A plurality of dispersion plates are evenly distributed along the circumferential direction, and one end of the dispersion plate is inclined downward.

[0011] As an optimized solution, a fixed conical plate is coaxially fixed to the lower inner wall of the aeration tank, the tip of the fixed conical plate is arranged upward, the upper port of the drain valve passes through the fixed conical plate upward and is flush with the top surface of the fixed conical plate, a rotatable transmission rod is coaxially arranged on the inner bottom of the aeration tank, the top end of the transmission rod passes through the fixed conical plate upward and is rotatably sealed with the fixed conical plate, and a plurality of material-dispensing plates are evenly distributed along the circumferential direction at a position of the outer wall of the transmission rod above the fixed conical plate and in frictional contact with the top surface of the fixed conical plate; The transfer assembly includes a vertically fixed loading barrel, a coaxial auger is provided in the loading barrel, two ends of the auger are rotatably connected to the inner top and inner bottom of the loading barrel respectively, the upper outer wall and the lower outer wall of the loading barrel are respectively provided with a discharge pipe and a feed pipe connected with the inner cavity thereof, one of the ports of the feed pipe extends obliquely upward into the aeration tank and is flush with the inner wall of the aeration tank, the port of the feed pipe is located above the fixed conical plate, a vertically arranged crushing barrel is fixed on the top of the aeration tank, the bottom of the crushing barrel passes downward through the aeration tank and extends into the collecting barrel, one of the ports of the discharge pipe is connected with the inner cavity of the crushing barrel, the inner bottom of the crushing barrel is provided with a plurality of vertically penetrating through holes, a rotatably arranged drive shaft is coaxially provided at the inner top of the crushing barrel, and a plurality of crushing knives are evenly distributed on the outer wall of the drive shaft along the circumferential direction.

[0012] As an optimized solution, the oxygenation component includes two lifting cylinders that are coaxial with the aeration tank and arranged up and down, the lifting cylinders are vertically slidingly and sealedly connected to the inner wall of the aeration tank, the inner wall of the lifting cylinder is coaxially fixed with a fixed circular plate, the top of the fixed circular plate is evenly distributed along the circumferential direction with a plurality of rotating tubes that are vertically penetrated, the upper port and the lower port of the rotating tube respectively extend to the outside of the lifting cylinder and are flush with the top and bottom of the lifting cylinder respectively, the fixed circular plate and the lifting cylinder are both rotatably sealed and connected to the rotating tube, and a plurality of the rotating tubes are arranged to rotate synchronously, and the inner wall of the rotating tube is located below the fixed circular plate and has two aeration disks that are connected to the lower inner cavity of the lifting cylinder evenly distributed along the circumferential direction, the inner wall of the rotating tube is located above the aeration disk and has a plurality of dividing knives evenly distributed along the circumferential direction, and the bottom of the inner wall of the lifting cylinder located below is coaxially provided with A rotatable transmission shaft is provided, the top end of the transmission shaft passes through two lifting cylinders and two fixed circular plates upward and extends to the outside, the lifting cylinder and the fixed circular plates are both rotatably sealed and connected to the transmission shaft, a plurality of stirring blades are evenly distributed circumferentially on the outer wall of the transmission shaft above the lifting cylinder, a plurality of connecting pipes connected with the lower inner cavity of the lifting cylinder are evenly distributed circumferentially on the top of the fixed circular plate, the connecting pipe passes through the lifting cylinder upward and extends to the outside, the upper end port of the connecting pipe located below is connected with the lower inner cavity of the lifting cylinder located above, a plurality of air inlet pipes are evenly distributed circumferentially on the top of the discharge hopper, the upper end port of the connecting pipe located above extends upward into the air inlet pipe and is vertically slidingly sealed and connected to the air inlet pipe, the upper end port of the air inlet pipe passes through the aeration tank, extends to the outside and is connected to the blower.

[0013] As an optimized solution, a fixed gear ring is coaxially fixed to the inner wall of the collecting barrel, a control motor is fixed to the top of the aeration tank, the output end of the control motor extends through the aeration tank into the collecting barrel and is fixedly connected to a control gear meshing with the fixed gear ring.

[0014] As an optimized solution, two drive motors are fixedly provided on the top of the aeration tank, wherein the output end of one of the drive motors passes through the aeration tank, extends into the rotating tube and is fixedly connected to the rotating column, a driven gear is fixedly sleeved on the outer wall of the rotating tube, and the output end of the other drive motor passes through the aeration tank and is fixedly connected to a drive gear meshing with the driven gear.

[0015] As an optimized solution, a lower servo motor is fixedly provided at the bottom of the aeration tank, and the output end of the lower servo motor passes through the aeration tank and is fixedly connected to the transmission rod.

[0016] As an optimized solution, a stepper motor is fixedly provided at the bottom of the upper barrel, and the output end of the stepper motor passes through the upper barrel and is fixedly connected to the auger; An upper servo motor is fixedly provided on the top of the crushing barrel, and an output end of the upper servo motor passes through the crushing barrel and is fixedly connected to the driving shaft.

[0017] As an optimized solution, the top of the discharge hopper is evenly distributed along the circumference with two vertically penetrating support tubes, the bottom of the support tube is penetrated by a vertically sliding lifting column, the lifting column is fixedly connected to the lifting tube located above, and the inner top of the support tube is fixedly provided with a vertically arranged lifting and telescopic cylinder, and the telescopic end of the lifting and telescopic cylinder is fixedly connected to the lifting column.

[0018] As an optimized solution, the outer wall of the transmission shaft is fixedly mounted on the inner cavity of the lifting cylinder and is provided with a driving gear, the outer wall of the rotating tube is fixedly mounted on the inner cavity of the lifting cylinder and is provided with a passive gear meshing with the driving gear, and a protective cylinder with an opening at the top is fixedly mounted on the bottom of the lifting cylinder located below, a built-in motor is fixedly mounted in the protective cylinder, and the output end of the built-in motor passes upward through the lifting cylinder and is fixedly connected to the transmission shaft.

[0019] Compared with the prior art, the present invention has the following beneficial effects: 1. During the process of purifying the sewage in the aeration tank, the control motor drives the control gear, the fixed gear ring and the collecting barrel to rotate until the collecting barrel rotates to the point where the feeding trough and the feeding hole completely overlap. The stepper motor drives the auger to rotate, and the sewage at the bottom of the aeration tank and the sinking activated sludge enter the upper barrel through the feed pipe. The rotating auger transports the sewage and activated sludge upward and enters the crushing barrel through the discharge pipe. The upper servo motor drives the drive shaft and the crushing knife to rotate. The rotating crushing knife crushes the activated sludge in the crushing barrel into a small volume of activated sludge. The sewage in the crushing barrel and the crushed activated sludge fall into the collecting barrel through the through hole. One of the drive motors drives the drive gear, the driven gear, the rotating tube and the scraper to rotate. The rotating scraper scrapes the activated sludge and sewage in the collecting barrel. The sewage and activated sludge in the collecting barrel enter the collecting hopper through the feeding trough and the feeding hole and The sewage and activated sludge flow downward, and then pass through the discharge hopper and fall downward. At the same time, another driving motor drives the rotating column and the dispersion plate to rotate. The rotating dispersion plate breaks up the sewage and activated sludge falling downward, and the broken activated sludge falls evenly into the sewage in the aeration tank. In the process of conveying the sewage and activated sludge at the bottom of the aeration tank upward, the lower servo motor drives the transmission rod and the material plate to rotate slowly. The rotating material plate can push the activated sludge deposited at the top corner of the fixed conical plate, so that this part of the activated sludge can enter the upper barrel through the feed pipe. The equipment can collect the activated sludge deposited at the bottom of the aeration tank and re-add it evenly to the upper area of ​​the sewage, so that the activated sludge in the equipment circulates vertically in the sewage, realizing the function of uniformly distributing the activated sludge in the sewage, and improving the purification effect and efficiency of the sewage. 2. When oxygenating the sewage in the aeration tank, the blower compresses the external air and transmits it to the air inlet pipe. The compressed air in the air inlet pipe enters the lower inner cavity of the two lifting cylinders through the connecting pipe. The compressed air in the lower inner cavity of the lifting cylinder is discharged through the aeration disk on the rotating tube, thereby oxygenating the sewage in the rotating tube. At the same time, the lifting and telescopic cylinder drives the lifting column and the lifting cylinder to move back and forth vertically. During the vertical reciprocating movement of the two lifting cylinders, the sewage in the aeration tank reciprocates through the rotating tube, and the aeration disk continuously oxygenates the sewage passing through the rotating tube. The oxygenation method of the present invention can evenly add oxygen to the sewage, thereby improving the oxygen content and uniformity of the oxygen content in the sewage, making the oxygen in the sewage sufficient and uniform, and improving the oxidation effect of the activated sludge on organic pollutants; 3. After the sewage in the aeration tank is purified, the control motor drives the aggregate barrel to rotate until the feed trough and the separation hole are completely overlapped, and the auger continuously transports the sewage and activated sludge in the aeration tank into the aggregate barrel. The activated sludge in the aggregate barrel is retained in the aggregate barrel by the filter plate, and the sewage in the aggregate barrel passes through the filter plate and flows back into the aeration tank until all the activated sludge in the aeration tank is collected in the aggregate barrel. The purified sewage in the aeration tank is discharged through the drain valve, and the sewage to be purified is added to the aeration tank through the adding valve. After the sewage is added, the control motor drives the aggregate barrel to rotate until the feed trough and the feed hole are completely overlapped, and the activated sludge in the aggregate barrel flows downward through the feed trough and the feed hole and Enter into the aeration tank, and then purify the sewage added in the aeration tank. Similarly, when replacing the activated sludge in the aeration tank, after the activated sludge is collected in the collecting barrel, the control motor drives the collecting barrel to rotate until the feeding trough and the mud discharge hole are completely overlapped, and the activated sludge in the collecting barrel enters the mud discharge hopper through the feeding trough and the mud discharge hole and is discharged to the outside of the equipment through the mud discharge pipe. The activated sludge is added to the aeration tank again through the adding valve. The equipment can separate the sewage and the activated sludge without transferring the sewage and the activated sludge, realizes the function of self-collection of the activated sludge, simplifies the recycling and replacement process of the activated sludge, and improves the practicality of the equipment. 4. During the vertical transportation of activated sludge, the rotating crushing knife can crush the activated sludge passing through the crushing barrel. The crushed activated sludge falls into the collecting barrel through the through hole and flows downward into the sewage. During the process of aerating sewage, the built-in motor drives the transmission shaft, the driving gear, the passive gear and the rotating tube to rotate, thereby driving the dividing knife and the aeration plate to rotate. When the lifting and telescopic cylinder drives the lifting barrel to move back and forth vertically, the rotating dividing knife crushes the activated sludge passing through the rotating tube. The crushing of the activated sludge by the crushing knife and the dividing knife effectively prevents the activated sludge from aggregating to form large flocs, increases the contact area between the activated sludge and the sewage, and then increases the area of ​​action of the activated sludge on the sewage, thereby accelerating the purification of the sewage; 5. The built-in motor can also drive the stirring blades to rotate while driving the transmission shaft. The rotating stirring blades can make the sewage, activated sludge and air in the aeration tank mix more evenly, further improving the sewage purification effect and purification efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0021] Figure 1It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the structure inside the aeration tank of the present invention; Figure 3 It is a schematic diagram of the structure of the collecting component of the present invention; Figure 4 It is a schematic diagram of the structure inside the collecting barrel of the present invention; Figure 5 It is a structural schematic diagram of the support plate of the present invention; Figure 6 It is a structural schematic diagram of the transfer assembly of the present invention; Figure 7 This is a schematic diagram of the structure inside the crushing tube of the present invention; Figure 8 It is a structural schematic diagram of the oxygenation assembly of the present invention; Fig. 9 It is a schematic diagram of the structure inside the lifting cylinder and the rotating tube of the present invention; Fig.10 It is a schematic diagram of the structure inside the lifting cylinder of the present invention.

[0022] In the figure: 1-aeration tank; 2-transfer assembly; 3-drain valve; 4-exhaust valve; 5-addition valve; 6-collection assembly; 7-oxygenation assembly; 8-discharge hopper; 9-collection hopper; 10-support plate; 11-collection barrel; 12-dispersion plate; 13-sludge discharge pipe; 14-sludge discharge hopper; 15-feeding trough; 16-scraper; 17-control gear; 18-control motor; 19-fixed gear ring; 20-driven gear; 21-rotating column; 22-driving motor; 23-rotating tube; 24-driving gear; 25-sludge discharge hole; 26-separation hole; 27-filter plate; 28-feeding hole; 29-feeding plate; 30-fixed Conical plate; 31- transmission rod; 32- lower servo motor; 33- stepping motor; 34- feeding pipe; 35- upper barrel; 36- auger; 37- discharge pipe; 38- crushing barrel; 39- through hole; 40- crushing knife; 41- driving shaft; 42- upper servo motor; 43- lifting cylinder; 44- supporting cylinder; 45- lifting and telescopic cylinder; 46- lifting column; 47- transmission shaft; 48- passive gear; 49- driving gear; 50- stirring blade; 51- dividing knife; 52- aeration plate; 53- connecting pipe; 54- rotating pipe; 55- fixed circular plate; 56- air inlet pipe; 57- built-in motor; 58- protective cylinder. DETAILED DESCRIPTION

[0023] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0024] like Figures 1 to 10As shown, an aeration and separation mechanism for self-collecting sewage treatment comprises an aeration tank 1, wherein the upper inner wall and the lower inner wall of the aeration tank 1 are respectively provided with a collecting component 6 and an oxygenating component 7, the oxygenating component 7 is connected to an external blower, a plurality of transfer components 2 connected to its inner cavity are uniformly distributed along the circumferential direction on the outer wall of the aeration tank 1, an adding valve 5 and an exhaust valve 4 connected to its inner cavity are fixedly provided on the outer wall of the aeration tank 1 at a position between the collecting component 6 and the oxygenating component 7, and a drain valve 3 connected to its inner cavity is fixedly provided on the bottom of the aeration tank 1.

[0025] The collecting assembly 6 includes a collecting barrel 11 rotatably connected to the upper inner wall of the aeration tank 1, the top of the collecting barrel 11 is open, the bottom of the collecting barrel 11 is a truncated cone structure, the inner wall of the aeration tank 1 is coaxially fixed with a support plate 10 at a position below the collecting barrel 11, the top of the support plate 10 is arranged in a shape corresponding to the bottom of the collecting barrel 11 and frictionally abuts against the bottom of the collecting barrel 11, a collecting hopper 9 is fixedly provided at the bottom of the support plate 10, and a discharge hopper 8 is coaxially fixedly connected to the inner wall of the aeration tank 1 at a position below the collecting hopper 9, and the upper port of the discharge hopper 8 is connected to the collecting hopper 9. The lower port of the hopper 9 is fixedly connected, and the inner bottom of the collecting barrel 11 is evenly distributed along the circumferential direction with two vertically penetrating material troughs 15. The bottom of the support plate 10 is located in the collecting hopper 9 and is evenly distributed along the circumferential direction with two mud discharge holes 25, two separation holes 26 and two material passing holes 28. The mud discharge holes 25, the separation holes 26 and the material passing holes 28 are alternately arranged along the circumferential direction and vertically penetrate the support plate 10. The diameters of the mud discharge holes 25, the separation holes 26 and the material passing holes 28 are the same as the diameter of the material passing trough 15. The inner wall of the separation hole 26 is coaxially fixed with a filter plate 27, the top surface of the filter plate 27 is flush with the top surface of the support plate 10, and two mud discharge buckets 14 are fixedly arranged at the position inside the collecting hopper 9 at the bottom of the support plate 10, and the two mud discharge buckets 14 are correspondingly connected to the two mud discharge holes 25, and the lower ports of the mud discharge buckets 14 are fixedly provided with mud discharge pipes 13 arranged in communication, and one of the ports of the mud discharge pipes 13 extends to the outside through the collecting hopper 9 and the aeration tank 1 obliquely downward, and a rotating pipe 23 is coaxially arranged on the top of the support plate 10, and the upper port of the rotating pipe 23 passes upward through the collecting barrel 11 and is rotatably connected At the top of the aeration tank 1, a rotating tube 23 is rotatably connected to the collecting barrel 11. The outer wall of the rotating tube 23 is located in the collecting barrel 11 and is evenly distributed along the circumferential direction with a plurality of scrapers 16 in frictional contact with the inner wall of the collecting barrel 11. A rotating column 21 is coaxially provided in the rotating tube 23 and is rotatably connected to its inner wall. The bottom end of the rotating column 21 passes downward through the support plate 10 and the collecting hopper 9 and extends into the discharge hopper 8. The outer wall of the rotating column 21 is located in the discharge hopper 8 and is evenly distributed along the circumferential direction with a plurality of dispersion plates 12, and one end of the dispersion plate 12 is inclined downward.

[0026] A fixed conical plate 30 is coaxially fixed to the lower inner wall of the aeration tank 1, the tip of the fixed conical plate 30 is arranged upward, the upper port of the drain valve 3 passes through the fixed conical plate 30 upward and is flush with the top surface of the fixed conical plate 30, a transmission rod 31 is coaxially arranged to be rotated at the inner bottom of the aeration tank 1, the top end of the transmission rod 31 passes through the fixed conical plate 30 upward and is rotatably sealed with the fixed conical plate 30, and a plurality of material-dispensing plates 29 are uniformly distributed along the circumferential direction at the position of the outer wall of the transmission rod 31 above the fixed conical plate 30 and in frictional contact with the top surface of the fixed conical plate 30; The transfer assembly 2 includes a vertically fixed loading barrel 35, in which an auger 36 is coaxially provided, and two ends of the auger 36 are rotatably connected to the inner top and inner bottom of the loading barrel 35, respectively, and a discharge pipe 37 and a feed pipe 34 connected to the inner cavity thereof are provided on the upper outer wall and the lower outer wall thereof, respectively, and one of the ports of the feed pipe 34 extends obliquely upward into the aeration tank 1 and is flush with the inner wall of the aeration tank 1, and the port of the feed pipe 34 is located above the fixed conical plate 30, and a vertically arranged crushing barrel 38 is fixedly provided on the top of the aeration tank 1, and the bottom of the crushing barrel 38 passes downward through the aeration tank 1 and extends into the collecting barrel 11, and one of the ports of the discharge pipe 37 is connected to the inner cavity of the crushing barrel 38, and a plurality of through holes 39 are vertically penetrated on the inner bottom of the crushing barrel 38, and a rotatably arranged drive shaft 41 is coaxially provided on the inner top of the crushing barrel 38, and a plurality of crushing knives 40 are evenly distributed on the outer wall of the drive shaft 41 along the circumferential direction.

[0027] The oxygenation assembly 7 includes two lifting cylinders 43 that are coaxial with the aeration tank 1 and arranged up and down. The lifting cylinders 43 are vertically slidingly sealed and connected to the inner wall of the aeration tank 1. A fixed circular plate 55 is coaxially fixed to the inner wall of the lifting cylinder 43. A plurality of vertically penetrating rotating tubes 54 are evenly distributed along the circumferential direction on the top of the fixed circular plate 55. The upper and lower ports of the rotating tubes 54 extend to the outside of the lifting cylinder 43 respectively and are flush with the top and bottom of the lifting cylinder 43. The fixed circular plate 55 and the lifting cylinder 43 are both rotationally sealed and connected to the rotating tube 54. The plurality of rotating tubes 54 are synchronously rotated. Two aeration plates 52 that are connected to the lower inner cavity of the lifting cylinder 43 are evenly distributed along the circumferential direction on the inner wall of the rotating tube 54 below the fixed circular plate 55. A plurality of dividing knives 51 are evenly distributed along the circumferential direction on the inner wall of the rotating tube 54 above the aeration plate 52. A rotatingly arranged coaxial bottom portion of the lifting cylinder 43 located below is provided. The transmission shaft 47, the top end of the transmission shaft 47 passes through the two lifting cylinders 43 and the two fixed circular plates 55 upward and extends to the outside, the lifting cylinder 43 and the fixed circular plates 55 are both rotatably sealed and connected to the transmission shaft 47, the outer wall of the transmission shaft 47 above the lifting cylinder 43 is evenly distributed with a plurality of stirring blades 50 along the circumferential direction, the top of the fixed circular plate 55 is evenly distributed with a plurality of connecting pipes 53 connected with the lower inner cavity of the lifting cylinder 43 along the circumferential direction, the connecting pipe 53 passes through the lifting cylinder 43 upward and extends to the outside, the upper end of the connecting pipe 53 located at the bottom is connected with the lower inner cavity of the lifting cylinder 43 located at the top, the top of the discharge hopper 8 is evenly distributed with a plurality of vertically penetrating air intake pipes 56 along the circumferential direction, the upper end of the connecting pipe 53 located at the top extends upward into the air intake pipe 56 and is vertically slidingly sealed and connected with the air intake pipe 56, the upper end of the air intake pipe 56 passes through the aeration tank 1 to extend to the outside and is connected to the blower.

[0028] A fixed gear ring 19 is coaxially fixed to the inner wall of the collecting barrel 11 , and a control motor 18 is fixed to the top of the aeration tank 1 . The output end of the control motor 18 extends through the aeration tank 1 into the collecting barrel 11 and is fixed to a control gear 17 meshing with the fixed gear ring 19 .

[0029] Two drive motors 22 are fixedly provided on the top of the aeration tank 1, wherein the output end of one of the drive motors 22 passes through the aeration tank 1, extends into the rotating tube 23 and is fixedly connected to the rotating column 21, and a driven gear 20 is fixedly sleeved on the outer wall of the rotating tube 23, and the output end of the other drive motor 22 passes through the aeration tank 1 and is fixedly connected to a drive gear 24 meshing with the driven gear 20.

[0030] A lower servo motor 32 is fixedly provided at the bottom of the aeration tank 1 , and an output end of the lower servo motor 32 passes through the aeration tank 1 and is fixedly connected to the transmission rod 31 .

[0031] A stepper motor 33 is fixedly provided at the bottom of the upper barrel 35, and an output end of the stepper motor 33 passes through the upper barrel 35 and is fixedly connected to the auger 36; An upper servo motor 42 is fixedly provided on the top of the crushing barrel 38 , and an output end of the upper servo motor 42 passes through the crushing barrel 38 and is fixedly connected to the driving shaft 41 .

[0032] The top of the discharge hopper 8 is evenly distributed along the circumference with two vertically penetrating support tubes 44, the bottom of the support tube 44 is penetrated by a vertically sliding lifting column 46, the lifting column 46 is fixedly connected to the lifting tube 43 located above, and the inner top of the support tube 44 is fixedly provided with a vertically arranged lifting and telescopic cylinder 45, and the telescopic end of the lifting and telescopic cylinder 45 is fixedly connected to the lifting column 46.

[0033] The outer wall of the transmission shaft 47 is fixedly mounted on the inner cavity of the lifting cylinder 43 and is provided with a driving gear 49. The outer wall of the rotating tube 54 is fixedly mounted on the inner cavity of the lifting cylinder 43 and is provided with a passive gear 48 meshing with the driving gear 49. A protective cylinder 58 with an opening at the top is fixedly mounted on the bottom of the lifting cylinder 43 below. A built-in motor 57 is fixedly mounted in the protective cylinder 58. The output end of the built-in motor 57 passes upward through the lifting cylinder 43 and is fixedly connected to the transmission shaft 47.

[0034] The working principle of this device is: During the process of purifying the sewage in the aeration tank 1, the control motor 18 drives the control gear 17, the fixed gear ring 19 and the collecting barrel 11 to rotate until the collecting barrel 11 rotates to the point where the feeding groove 15 and the feeding hole 28 completely overlap, and the stepper motor 33 drives the auger 36 to rotate, and the sewage and the sinking activated sludge at the bottom of the aeration tank 1 enter the upper barrel 35 through the feed pipe 34, and the rotating auger 36 transports the sewage and the activated sludge upward and enters the crushing barrel 38 through the discharge pipe 37, and the upper servo motor 42 The driving shaft 41 and the crushing blade 40 are driven to rotate, and the rotating crushing blade 40 crushes the activated sludge in the crushing barrel 38 to make it into a small volume of activated sludge. The sewage in the crushing barrel 38 and the crushed activated sludge fall into the collecting barrel 11 through the through hole 39. One of the driving motors 22 drives the driving gear 24, the driven gear 20, the rotating tube 23 and the scraper 16 to rotate. The rotating scraper 16 scrapes the activated sludge and sewage in the collecting barrel 11. The sewage and activated sludge in the collecting barrel 11 fall into the collecting barrel 11 through the through hole 39. The material trough 15 and the material through hole 28 enter the collecting hopper 9 and flow downward, and then the sewage and activated sludge pass through the discharge hopper 8 downward and fall downward. At the same time, another driving motor 22 drives the rotating column 21 and the dispersion plate 12 to rotate, and the rotating dispersion plate 12 breaks up the sewage and activated sludge falling downward, and the broken activated sludge falls evenly into the sewage in the aeration tank 1. In the process of conveying the sewage and activated sludge at the bottom of the aeration tank 1 upward, the lower servo motor 32 drives the transmission rod 31 and the material plate 29 to rotate slowly, and the rotating material plate 29 can push the activated sludge deposited at the top corner of the fixed conical plate 30, so that this part of the activated sludge can enter the upper barrel 35 through the feed pipe 34. The equipment can collect the activated sludge deposited at the bottom of the aeration tank 1 and re-evenly add it to the upper area of ​​the sewage, so that the activated sludge in the equipment circulates vertically in the sewage, realizing the function of uniformly distributing the activated sludge in the sewage, and improving the purification effect and purification efficiency of the sewage; When oxygenating the sewage in the aeration tank 1, the blower compresses the external air and transmits it to the air inlet pipe 56. The compressed air in the air inlet pipe 56 enters the lower inner cavity of the two lifting cylinders 43 through the connecting pipe 53. The compressed air in the lower inner cavity of the lifting cylinder 43 is discharged through the aeration disk 52 on the rotating tube 54, thereby oxygenating the sewage in the rotating tube 54. At the same time, the lifting and telescopic cylinder 45 drives the lifting column 46 and the lifting cylinder 43 to move back and forth vertically. During the vertical reciprocating movement of the two lifting cylinders 43, the sewage in the aeration tank 1 reciprocates through the rotating tube 54, and the aeration disk 52 continuously oxygenates the sewage passing through the rotating tube 54. The oxygenation method of the present invention can evenly add oxygen to the sewage, improve the oxygen content and oxygen content uniformity in the sewage, make the oxygen in the sewage sufficient and uniform, and improve the oxidation effect of the activated sludge on organic pollutants. After the sewage in the aeration tank 1 is purified, the control motor 18 drives the collecting barrel 11 to rotate until the feed trough 15 and the separation hole 26 are completely overlapped, and the auger 36 continuously transports the sewage and activated sludge in the aeration tank 1 to the collecting barrel 11, and the activated sludge in the collecting barrel 11 is retained in the collecting barrel 11 by the filter plate 27. The sewage in the collecting barrel 11 passes through the filter plate 27 and flows back into the aeration tank 1 until all the activated sludge in the aeration tank 1 is collected in the collecting barrel 11, and the purified sewage in the aeration tank 1 is discharged through the drain valve 3, and the sewage to be purified is added to the aeration tank 1 through the adding valve 5. After the sewage is added, the control motor 18 drives the collecting barrel 11 to rotate until the feed trough 15 and the feed hole 28 are completely overlapped, and the activated sludge in the collecting barrel 11 passes through the feed trough 15 and the feed hole 28. The material hole 28 flows downward and enters the aeration tank 1, thereby purifying the sewage added in the aeration tank 1. Similarly, when replacing the activated sludge in the aeration tank 1, after the activated sludge is collected in the collecting barrel 11, the control motor 18 drives the collecting barrel 11 to rotate until the material trough 15 and the mud discharge hole 25 are completely overlapped, and the activated sludge in the collecting barrel 11 enters the mud discharge bucket 14 through the material trough 15 and the mud discharge hole 25 and is discharged to the outside of the equipment through the mud discharge pipe 13. Activated sludge is added to the aeration tank 1 again through the adding valve 5. The equipment can separate the sewage and the activated sludge without transferring the sewage and the activated sludge, realizes the function of self-collection of the activated sludge, simplifies the recycling process and replacement process of the activated sludge, and improves the practicality of the equipment; During the vertical transportation of the activated sludge, the rotating crushing knife 40 can crush the activated sludge passing through the crushing barrel 38. The crushed activated sludge falls into the collecting barrel 11 through the through hole 39 and flows downward into the sewage. During the process of oxygenating the sewage, the built-in motor 57 drives the transmission shaft 47, the driving gear 49, the passive gear 48 and the rotating tube 54 to rotate, thereby driving the dividing knife 51 and the aeration plate 52 to rotate. When the lifting and telescopic cylinder 45 drives the lifting barrel 43 to move vertically back and forth, the rotating dividing knife 51 crushes the activated sludge passing through the rotating tube 54. The crushing of the activated sludge by the crushing knife 40 and the dividing knife 51 effectively prevents the activated sludge from aggregating to form large flocs, increases the contact area between the activated sludge and the sewage, and thereby increases the area of ​​action of the activated sludge on the sewage, thereby accelerating the purification speed of the sewage. The built-in motor 57 can also drive the stirring blades 50 to rotate while driving the transmission shaft 47 to rotate. The rotating stirring blades 50 can make the sewage, activated sludge and air in the aeration tank 1 mix more evenly, further improving the sewage purification effect and purification efficiency.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. Aeration and separation mechanism for self-collecting sewage treatment, characterized in that: The aeration tank (1) comprises an aeration tank (1), wherein the upper inner wall and the lower inner wall of the aeration tank (1) are respectively provided with a collecting component (6) and an oxygenating component (7), wherein the oxygenating component (7) is connected to an external blower, and the outer wall of the aeration tank (1) is evenly distributed with a plurality of transfer components (2) connected to its inner cavity along the circumferential direction, and an addition valve (5) and an exhaust valve (4) connected to its inner cavity are fixedly provided at a position of the outer wall of the aeration tank (1) between the collecting component (6) and the oxygenating component (7), and a drainage valve (3) connected to its inner cavity is fixedly provided at the bottom of the aeration tank (1).

2. The aeration and separation mechanism for self-collecting sewage treatment according to claim 1, characterized in that: The collecting assembly (6) comprises a collecting barrel (11) rotatably connected to the upper inner wall of the aeration tank (1); the top of the collecting barrel (11) is open, and the bottom of the collecting barrel (11) is a truncated cone-shaped structure; a support plate (10) is coaxially fixedly connected to the inner wall of the aeration tank (1) below the collecting barrel (11); the top of the support plate (10) is arranged in a conformal manner with the bottom of the collecting barrel (11) and frictionally abuts against the bottom of the collecting barrel (11); a collecting hopper (9) is fixedly provided at the bottom of the support plate (10); a discharge hopper (8) is coaxially fixedly connected to the inner wall of the aeration tank (1) below the collecting hopper (9); and the upper port of the discharge hopper (8) is The support plate (10) is fixedly connected to the lower port of the collecting hopper (9); the inner bottom of the collecting barrel (11) is evenly distributed along the circumferential direction with two vertically penetrating material passage grooves (15); the bottom of the support plate (10) is located inside the collecting hopper (9) and is evenly distributed along the circumferential direction with two mud discharge holes (25), two separation holes (26) and two material passage holes (28); the mud discharge holes (25), separation holes (26) and material passage holes (28) are alternately arranged along the circumferential direction and vertically penetrate the support plate (10); the diameters of the mud discharge holes (25), separation holes (26) and material passage holes (28) are all the same as the diameter of the material passage grooves (15); and the inner wall of the separation hole (26) is coaxially fixed with a filter plate. (27), the top surface of the filter plate (27) is flush with the top surface of the support plate (10), and two mud discharge buckets (14) are fixedly provided at the bottom of the support plate (10) at a position inside the collecting hopper (9), and the two mud discharge buckets (14) are correspondingly connected to the two mud discharge holes (25), and the lower ends of the mud discharge buckets (14) are fixedly provided with mud discharge pipes (13) arranged in communication, and one end of the mud discharge pipe (13) passes through the collecting hopper (9) and the aeration tank (1) obliquely downward and extends to the outside, and a rotating pipe (23) is coaxially provided on the top of the support plate (10), and the upper end of the rotating pipe (23) passes through the collecting barrel (11) upward and is rotatably connected to the aeration tank (11). Connected to the top of the aeration tank (1), the rotating tube (23) is rotatably connected to the collecting barrel (11), and a plurality of scrapers (16) are evenly distributed along the circumferential direction at a position of the outer wall of the rotating tube (23) located inside the collecting barrel (11) and in frictional contact with the inner wall of the collecting barrel (11). A rotating column (21) is coaxially provided inside the rotating tube (23) and rotatably connected to the inner wall thereof, and the bottom end of the rotating column (21) passes downward through the support plate (10) and the collecting hopper (9) and extends into the discharge hopper (8). A plurality of dispersion plates (12) are evenly distributed along the circumferential direction at a position of the outer wall of the rotating column (21) located inside the discharge hopper (8), and one end of the dispersion plate (12) is arranged to be inclined downward.

3. The aeration and separation mechanism for self-collecting sewage treatment according to claim 2, characterized in that: A fixed conical plate (30) is coaxially fixedly connected to the lower inner wall of the aeration tank (1), the tip of the fixed conical plate (30) is arranged upward, the upper port of the drain valve (3) passes through the fixed conical plate (30) upward and is flush with the top surface of the fixed conical plate (30), a rotatable transmission rod (31) is coaxially provided on the inner bottom of the aeration tank (1), the top of the transmission rod (31) passes through the fixed conical plate (30) upward and is rotatably sealed to the fixed conical plate (30), and a plurality of material-dispensing plates (29) are uniformly distributed along the circumferential direction at a position above the fixed conical plate (30) on the outer wall of the transmission rod (31) and in frictional contact with the top surface of the fixed conical plate (30); The transfer assembly (2) comprises a vertically fixed loading barrel (35), wherein an auger (36) is coaxially arranged inside the loading barrel (35), wherein two ends of the auger (36) are rotatably connected to the inner top and inner bottom of the loading barrel (35) respectively, and the upper outer wall and the lower outer wall of the loading barrel (35) are respectively provided with a discharge pipe (37) and a feed pipe (34) which are connected to the inner cavity thereof, wherein one end of the feed pipe (34) extends obliquely upward into the aeration tank (1) and is flush with the inner wall of the aeration tank (1), and the end of the feed pipe (34) is located at a fixed conical plate ( A vertically arranged crushing barrel (38) is fixedly disposed on the top of the aeration tank (1), the bottom of the crushing barrel (38) passes downward through the aeration tank (1) and extends into the collecting barrel (11), one of the ports of the discharge pipe (37) is communicated with the inner cavity of the crushing barrel (38), the inner bottom of the crushing barrel (38) is provided with a plurality of vertically penetrating through holes (39), the inner top of the crushing barrel (38) is coaxially provided with a rotatable driving shaft (41), and the outer wall of the driving shaft (41) is evenly distributed with a plurality of crushing knives (40) along the circumferential direction.

4. The aeration and separation mechanism for self-collecting sewage treatment according to claim 2, characterized in that: The oxygenation assembly (7) comprises two lifting cylinders (43) which are coaxial with the aeration tank (1) and arranged vertically, the lifting cylinders (43) being vertically slidably sealedly connected to the inner wall of the aeration tank (1), a fixed circular plate (55) being coaxially fixedly connected to the inner wall of the lifting cylinder (43), a plurality of vertically penetrating rotating tubes (54) being evenly distributed along the circumferential direction on the top of the fixed circular plate (55), the upper port and the lower port of the rotating tube (54) respectively extending to the outside of the lifting cylinder (43) and correspondingly flush with the top and the bottom of the lifting cylinder (43). The fixed circular plate (55) and the lifting cylinder (43) are both rotatably sealed with the rotating tube (54), and a plurality of the rotating tubes (54) are synchronously rotatably arranged. The inner wall of the rotating tube (54) is located below the fixed circular plate (55) and is evenly distributed along the circumferential direction with two aeration plates (52) that are in communication with the lower inner cavity of the lifting cylinder (43). The inner wall of the rotating tube (54) is located above the aeration plates (52) and is evenly distributed along the circumferential direction with a plurality of dividing knives (51). The inner bottom of the lifting cylinder (43) located below is coaxially provided with a rotating arrangement The top end of the transmission shaft (47) passes through two lifting cylinders (43) and two fixed circular plates (55) and extends to the outside. The lifting cylinder (43) and the fixed circular plates (55) are both rotatably sealed with the transmission shaft (47). A plurality of stirring blades (50) are evenly distributed along the circumferential direction on the outer wall of the transmission shaft (47) above the lifting cylinder (43). A plurality of connecting pipes (53) are evenly distributed along the circumferential direction on the top of the fixed circular plates (55) and are connected to the lower inner cavity of the lifting cylinder (43). The connecting pipe (53) extends upward through the lifting cylinder (43) to the outside, and the upper end of the connecting pipe (53) located below is connected to the lower inner cavity of the lifting cylinder (43) located above. The top of the discharge hopper (8) is evenly distributed along the circumference with a plurality of vertically penetrating air intake pipes (56). The upper end of the connecting pipe (53) located above extends upward into the air intake pipe (56) and is vertically slidably sealed to the air intake pipe (56). The upper end of the air intake pipe (56) extends through the aeration tank (1) to the outside and is connected to the blower.

5. The aeration and separation mechanism for self-collecting sewage treatment according to claim 2, characterized in that: A fixed toothed ring (19) is coaxially fixedly connected to the inner wall of the collecting barrel (11), and a control motor (18) is fixedly provided on the top of the aeration tank (1). The output end of the control motor (18) passes through the aeration tank (1) and extends into the collecting barrel (11) and is fixedly connected to a control gear (17) meshing with the fixed toothed ring (19).

6. The aeration and separation mechanism for self-collecting sewage treatment according to claim 2, characterized in that: Two drive motors (22) are fixedly provided on the top of the aeration tank (1), wherein the output end of one of the drive motors (22) passes through the aeration tank (1) and extends into the rotating tube (23) and is fixedly connected to the rotating column (21), and a driven gear (20) is fixedly sleeved on the outer wall of the rotating tube (23), and the output end of the other drive motor (22) passes through the aeration tank (1) and is fixedly connected to a drive gear (24) meshing with the driven gear (20).

7. The aeration and separation mechanism for self-collecting sewage treatment according to claim 3 is characterized in that: A lower servo motor (32) is fixedly provided at the bottom of the aeration tank (1), and an output end of the lower servo motor (32) passes through the aeration tank (1) and is fixedly connected to the transmission rod (31).

8. The aeration and separation mechanism for self-collecting sewage treatment according to claim 3, characterized in that: A stepper motor (33) is fixedly provided at the bottom of the upper barrel (35), and an output end of the stepper motor (33) passes through the upper barrel (35) and is fixedly connected to the auger (36); An upper servo motor (42) is fixedly provided on the top of the crushing barrel (38), and an output end of the upper servo motor (42) passes through the crushing barrel (38) and is fixedly connected to the drive shaft (41).

9. The aeration and separation mechanism for self-collecting sewage treatment according to claim 4, characterized in that: The top of the discharge hopper (8) is evenly distributed along the circumference with two vertically penetrating support cylinders (44); the bottom of the support cylinder (44) is penetrated by a vertically sliding lifting column (46); the lifting column (46) is fixedly connected to the lifting cylinder (43) located above; the inner top of the support cylinder (44) is fixedly provided with a vertically arranged lifting and telescopic cylinder (45); the telescopic end of the lifting and telescopic cylinder (45) is fixedly connected to the lifting column (46).

10. The aeration and separation mechanism for self-collecting sewage treatment according to claim 4, characterized in that: The outer wall of the transmission shaft (47) is fixedly mounted on a driving gear (49) at a position located in the inner cavity of the lifting cylinder (43); the outer wall of the rotating tube (54) is fixedly mounted on a position located in the inner cavity of the lifting cylinder (43) and is equipped with a passive gear (48) meshing with the driving gear (49); a protective cylinder (58) having an opening at the top is fixedly mounted on the bottom of the lifting cylinder (43) at the bottom; a built-in motor (57) is fixedly mounted in the protective cylinder (58); an output end of the built-in motor (57) passes through the lifting cylinder (43) upward and is fixedly connected to the transmission shaft (47).

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