CN219079127U - Sewage treatment equipment based on bioengineering principle - Google Patents

Abstract

The utility model discloses sewage treatment equipment based on a bioengineering principle, which comprises a treatment equipment main body, a reaction tank and a sedimentation tank, wherein a filter tank is arranged in the left end of the treatment equipment main body, the reaction tank is arranged in the middle of the treatment equipment main body, the sedimentation tank is arranged in the right end of the treatment equipment main body, and the upper end of the filter tank is connected with a water inlet pipe. This sewage treatment device based on bioengineering principle can filter its great debris that carries in sewage department of intaking through setting up filtration to provide power through rivers, the rotation of drive scraper blade is automatic clear up and collect collecting debris, can prevent that debris from piling up when improving the use convenience and cause the jam, simultaneously through high-pressure gas as power, drive two sets of puddler different directions rotation from top to bottom, two sets of puddlers of staggered arrangement can smash the flocculation piece in step, increases the reaction effect of microorganism and sewage, improves the treatment effeciency of this device to sewage.

Description

Sewage treatment equipment based on bioengineering principle

Technical Field

The utility model relates to the technical field of sewage treatment, in particular to sewage treatment equipment based on a bioengineering principle.

Background

The biological sewage treatment can be applied to sewage treatment of various types such as petroleum, petrochemical industry, chemical industry, metallurgy, machinery, leather, coal gasification, food, brewing, daily chemical industry, printing and dyeing, pharmacy, papermaking, urban sewage and the like and sewage treatment of large-area water areas such as rivers and lakes; in the biological engineering sewage treatment range, the activated sludge sewage treatment method is a common sewage treatment mode, mainly comprising the steps of mixing activated sludge into sewage, and then promoting reaction in the mixture in an oxygenation mode, so that the sewage treatment effect is achieved, but the existing biological sewage treatment equipment has a certain problem.

However, when the existing sewage treatment equipment is used, certain problems exist:

an existing sewage treatment system based on activated sludge, such as a sewage treatment system based on activated sludge disclosed in China patent publication No. CN207511913U, is provided with a first partition plate and a second partition plate which are vertically arranged in a treatment tank, the first partition plate and the second partition plate are arranged in parallel, the treatment tank is divided into a first cavity, a second cavity and a third cavity which are sequentially arranged, the first cavity and the second cavity are communicated through a first liquid port and an overflow port, the second cavity and the third cavity are communicated through a second observation flushing liquid port, and an activated sludge layer, an aeration pipe and a stirring device are arranged in the second cavity; but current sewage treatment plant can't filter the great debris that sewage water department carried, influences the reaction effect of sewage, thereby great debris produces simultaneously and piles up easily and produce the jam, and current sewage treatment plant stirring structure has a plurality of dead angles, and stirring effect is relatively poor, and the stirring is inhomogeneous, can't smash the flocculation piece for reaction efficiency is relatively poor, and is lower to the treatment effeciency of sewage.

Aiming at the problems, the novel design is carried out on the basis of the original sewage treatment equipment based on the bioengineering principle.

Disclosure of Invention

The utility model aims to provide sewage treatment equipment based on a bioengineering principle, and aims to solve the problems that the existing sewage treatment equipment cannot filter larger impurities carried by sewage, is poor in stirring effect, uneven in stirring, cannot crush flocculation blocks and is low in sewage treatment efficiency.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a sewage treatment device based on bioengineering principle comprises a treatment device main body, a reaction tank and a sedimentation tank:

a filter tank is arranged in the left end of the treatment equipment main body, and a reaction tank is arranged in the middle of the treatment equipment main body;

a sedimentation tank is arranged at the right end of the treatment equipment main body, the upper end of the filter tank is connected with a water inlet pipe, and a first guide pipe is arranged in the filter tank;

the upper end of the first conduction pipe is connected with a first water pump, the right end of the first water pump is connected with the reaction tank in a conduction way, the bottom end of the reaction tank is connected with a second conduction pipe, the upper end of the second conduction pipe is connected with a second water pump, and the right end of the second water pump is connected with the sedimentation tank in a conduction way;

the upper end of the right side of the sedimentation tank is connected with a water outlet pipe, and the lower end of the right side of the sedimentation tank is connected with a mud discharging pipe;

the lower end of the treatment equipment main body is provided with an air pump, the left end of the air pump is connected with a square pipe, and the upper end of the square pipe is connected with a check valve;

the reaction tank is internally penetrated with an aeration pipe, the lower end of the aeration pipe is connected with the reaction tank through a sealing bearing, the lower end of the aeration pipe is connected with a check valve in a conducting way, an aeration hole is formed in an array outside the aeration pipe, and the aeration pipe is connected with the check valve through the sealing bearing.

Preferably, a filter screen is fixedly arranged at the upper end inside the filter tank, the upper end of the filter screen is connected with an annular baffle, and the rear side of the filter screen is provided with a impurity discharging hole;

the lower end of the impurity discharging hole is provided with a diversion square groove, the upper end of the diversion square groove is fixedly connected with the filter screen, and the diversion square groove penetrates to the outside of the filter tank.

By adopting the technical scheme, the large sundries in the sewage can be filtered when the sewage enters the treatment equipment through the filter screen, and the sundries are removed from the equipment through the impurity removing holes and the diversion square grooves.

Preferably, the first conduction pipe is square structural design, and is provided with first impeller inside the first conduction pipe, first conduction pipe left end fixedly connected with fixed plate, fixed plate inside bearing is connected with the worm, and the worm right-hand member runs through to inside and first impeller fixed connection of first conduction pipe.

By adopting the technical scheme, through setting up first impeller in first pipe inside, when first water pump starts and carries out the extraction to filtering ponds inside liquid, liquid flows and then drives first impeller and worm synchronous revolution in first pipe inside that switches on.

Preferably, a first transmission rod is connected to the bearing inside the filter screen, the lower end of the first transmission rod penetrates through the inside of the fixed plate, a worm wheel is connected to the lower end of the first transmission rod in a key manner, and the worm wheel is meshed with the worm;

the upper end of the first transmission rod is connected with scrapers, four groups of scrapers are arranged in the scraper array, and the lower ends of the scrapers are in contact with the upper surface of the filter screen.

By adopting the technical scheme, the worm wheel and the first transmission rod are driven to synchronously rotate through the rotation of the worm, a plurality of groups of scrapers can be driven to rotate when the first transmission rod rotates, and then impurities accumulated on the upper end face of the filter screen can be scraped to the inside of the impurity discharging hole when the scrapers rotate, and then the impurities are discharged out of the device through the diversion square groove.

Preferably, a second impeller is arranged in the square tube, a sealing bearing at the upper end of the square tube is connected with a second transmission rod, and the lower end of the second transmission rod penetrates through the square tube and is fixedly connected with the second impeller;

the upper end key of the second transmission rod is connected with a driving gear, the lower end of the aeration pipe is connected with a driven gear, the driving gear is connected with the driven gear in a meshed manner, and the diameter of the driving gear is smaller than that of the driven gear.

By adopting the technical scheme, the high-pressure gas is conveyed into the square pipe through starting, the second impeller is driven to rotate when the gas flows, the second transmission rod and the driving gear are driven to rotate, and the driven gear and the aeration pipe can be driven to synchronously rotate through the driving gear.

Preferably, the reaction tank is internally provided with a movable plate, the movable plate is fixedly connected with the aeration pipe, the movable plate and the reaction tank are of round structural design, the upper end of the movable plate is connected with a first stirring rod, the first stirring rod is provided with four groups, and a first stirring rod array is arranged on the upper end face of the movable plate.

By adopting the technical scheme, through the setting of this circular fly leaf, drive fly leaf and first puddler and rotate when the aeration tube pivoted, and then stir the inside sewage of reaction tank, improve the reaction effect of sewage and activated sludge, improve sewage treatment's efficiency.

Preferably, a movable groove is formed in the movable plate, a sliding plate is connected in the movable groove in a sliding manner, a spring is arranged in the movable groove, and two ends of the spring are fixedly connected with the inner wall of the movable groove and the sliding plate respectively;

the outside bolted connection of sliding plate has scrapes the strip, and scrapes the outer terminal surface of strip and the contact of reaction tank inner wall.

By adopting the technical scheme, the movable groove is arranged, the inner sliding plate can drive the scraping strip to move, and the spring arranged in the movable groove pushes the sliding plate to move outwards, so that the scraping strip is kept tightly attached to the inner wall of the reaction tank, and impurities such as sludge attached to the inner wall of the reaction tank can be cleaned when the movable plate is selectively arranged.

Preferably, the upper end bearing of the aeration pipe is connected with a movable sleeve, the outside of the movable sleeve is fixedly connected with a mounting plate, the mounting plate is of a cross-shaped structural design, the lower end of the mounting plate is fixedly connected with a second stirring rod, and the second stirring rod and the first stirring rod are arranged in a staggered manner.

Adopt above-mentioned technical scheme, through set up the second puddler crisscross with first puddler in the inside upper end of reaction tank, two sets of puddlers can the opposite direction rotation, not only improved the effect of stirring, two sets of stirring earlier can smash the inside mud coagulation clot of reaction tank when rotatory simultaneously, are convenient for improve the reaction effect, improve the efficiency to sewage treatment.

Preferably, a fixed circular plate is fixedly arranged at the top end of the reaction tank, and the upper end of the movable sleeve is connected with a fixed circular plate bearing;

the upper end key of the aerator pipe is connected with a first gear, the lower end shaft of the fixed circular plate is connected with a second gear, and the second gear is meshed with the first gear;

the movable sleeve is internally fixedly connected with a toothed ring, and the toothed ring is meshed with the second gear.

Adopt above-mentioned technical scheme, drive first gear synchronous revolution through the aeration pipe to drive ring gear and movable sleeve reverse rotation through the second gear, and then drive second puddler reverse rotation through the mounting panel, improve stirring effect through the cooperation of second puddler and first puddler, and smash the flocculation piece.

Compared with the prior art, the utility model has the beneficial effects that: this sewage treatment device based on bioengineering principle can filter its great debris that carries in sewage department of intaking through setting up filtration to provide power through rivers, the rotation of drive scraper blade is automatic clear up and collect collecting debris, can prevent that debris from piling up when improving the use convenience and cause the jam, simultaneously through high-pressure gas as power, drive two sets of puddler different directions rotation from top to bottom, two sets of puddlers of staggered arrangement can smash the flocculation piece in step, increases the reaction effect of microorganism and sewage, improves the treatment effeciency of this device to sewage.

1. The first water pump is started to drive water flow to flow in the first conducting pipe, the first impeller is driven to rotate to provide power and the worm is driven to rotate, the first transmission rod and the scraping plate are synchronously driven to rotate through the cooperation of the worm wheel and the worm, impurities left in filtering of sewage by the filter screen can be scraped into the impurity discharging hole, the impurities are discharged out of the device through the diversion square groove, the filter screen is not required to be cleaned manually, the use is more convenient, the use cost is reduced by adopting water flow as a power source, and the filter screen can be prevented from being blocked;

2. the high-pressure gas is provided through the air pump, when the high-pressure gas flows from the inside of the square tube, the second impeller and the second transmission rod are driven to rotate, the aeration pipe is driven to rotate through the cooperation of the driving gear and the driven gear, the rotation of the aeration pipe can drive two groups of stirring rods to rotate in opposite directions, the uniformity of stirring can be improved, in the rotating process, the stirring rods are arranged in a staggered manner, flocculation blocks generated by sewage reaction can be crushed, the effect of microorganism and sewage reaction is improved, and the efficiency of sewage treatment is further improved.

Drawings

FIG. 1 is a schematic elevational cross-sectional view of the present utility model;

FIG. 2 is a schematic diagram of the structure of the filter screen and the impurity removing holes of the present utility model;

FIG. 3 is a schematic view of the worm and worm gear structure of the present utility model;

FIG. 4 is a schematic view of the square tube and the second impeller of the present utility model;

FIG. 5 is a schematic view of the structure of the movable plate and the first stirring rod of the utility model;

FIG. 6 is a schematic view of the structure of the mounting plate and the second stirring rod of the present utility model;

FIG. 7 is a schematic view of the structure of the aerator pipe and the first gear of the present utility model;

FIG. 8 is an enlarged schematic view of the structure of FIG. 1A according to the present utility model;

fig. 9 is an enlarged view of the structure of fig. 5B according to the present utility model.

In the figure: 1. a processing apparatus main body; 2. a filtering tank; 3. a reaction tank; 4. a sedimentation tank; 5. a water inlet pipe; 6. a first conduit; 7. a first water pump; 8. a second conduit; 9. a second water pump; 10. a water outlet pipe; 11. a mud pipe; 12. a filter screen; 13. an annular baffle; 14. a impurity removing hole; 15. a diversion square groove; 16. a first impeller; 17. a fixing plate; 18. a worm; 19. a first transmission rod; 20. a worm wheel; 21. an air pump; 22. square tubes; 23. a check valve; 24. an aeration pipe; 25. aeration holes; 26. a second impeller; 27. a second transmission rod; 28. a drive gear; 29. a driven gear; 30. a movable plate; 31. a first stirring rod; 32. a movable groove; 33. a sliding plate; 34. a spring; 35. scraping the strip; 36. a movable sleeve; 37. a mounting plate; 38. a second stirring rod; 39. fixing the circular plate; 40. a first gear; 41. a second gear; 42. a toothed ring; 43. a scraper.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-9, the present utility model provides a technical solution: the sewage treatment device based on the bioengineering principle comprises a treatment device main body 1, a reaction tank 3 and a sedimentation tank 4, wherein a filter tank 2 is arranged in the left end of the treatment device main body 1, the middle part of the treatment device main body 1 is provided with the reaction tank 3, the right end of the treatment device main body 1 is provided with the sedimentation tank 4, the upper end of the filter tank 2 is connected with a water inlet pipe 5, a first guide pipe 6 is arranged in the filter tank 2, the upper end of the first guide pipe 6 is connected with a first water pump 7, the right end of the first water pump 7 is connected with the reaction tank 3 in a conducting way, the bottom end of the reaction tank 3 is connected with a second guide pipe 8, the upper end of the second guide pipe 8 is connected with a second water pump 9, the right end of the second water pump 9 is connected with the sedimentation tank 4 in a conducting way, the upper end of the right side of the sedimentation tank 4 is connected with a water outlet pipe 10, and the lower end of the right side of the sedimentation tank 4 is connected with a sludge discharge pipe 11; sewage enters the filter tank 2 through the water inlet pipe 5, larger impurities contained in the sewage are filtered, the treatment efficiency is improved, the filtered sewage is conveyed to the inside of the reaction tank 3 through the first guide pipe 6 and the first water pump 7, the sewage after treatment is subjected to reaction treatment by adding activated sludge, the sewage after the treatment is conveyed to the sedimentation tank 4 for further treatment through the second guide pipe 8 and the second water pump 9, clear water is discharged through the water outlet pipe 10 after the sedimentation is finished, and the sedimented sludge is discharged through the sludge discharge pipe 11.

The upper end of the inside of the filter tank 2 is fixedly provided with a filter screen 12, the upper end of the filter screen 12 is connected with an annular baffle 13, and the rear side of the filter screen 12 is provided with a impurity discharging hole 14; the lower end of the impurity discharging hole 14 is provided with a diversion square groove 15, the upper end of the diversion square groove 15 is fixedly connected with the filter screen 12, and the diversion square groove 15 penetrates to the outside of the filter tank 2; the first conducting pipe 6 is of a square structure design, a first impeller 16 is arranged in the first conducting pipe 6, the left end of the first conducting pipe 6 is fixedly connected with a fixing plate 17, a worm 18 is connected with an inner bearing of the fixing plate 17, and the right end of the worm 18 penetrates into the first conducting pipe 6 and is fixedly connected with the first impeller 16; the sewage discharged by the water inlet pipe 5 can be filtered through the arrangement of the filter screen 12, and larger impurities contained in the sewage can be filtered; the impurities left after filtration can be discharged to the outside of the device through the impurity discharging holes 14 and the diversion square grooves 15 for collection, so that the use is more convenient, and the impurities on the filter screen 12 do not need to be manually treated.

The first conducting pipe 6 is of a square structure design, a first impeller 16 is arranged in the first conducting pipe 6, the left end of the first conducting pipe 6 is fixedly connected with a fixing plate 17, a worm 18 is connected with an inner bearing of the fixing plate 17, and the right end of the worm 18 penetrates into the first conducting pipe 6 and is fixedly connected with the first impeller 16; the inner bearing of the filter screen 12 is connected with a first transmission rod 19, the lower end of the first transmission rod 19 penetrates through the inside of the fixed plate 17, the lower end of the first transmission rod 19 is connected with a worm wheel 20 in a key manner, and the worm wheel 20 is in meshed connection with the worm 18; the upper end of the first transmission rod 19 is connected with a scraper 43, four groups of scrapers 43 are arranged in an array, and the lower end of the scraper 43 is contacted with the upper surface of the filter screen 12; when the first water pump 7 is started, sewage inside the filter tank 2 is conveyed through the first guide pipe 6, and the sewage can drive the first impeller 16 and the worm 18 to synchronously rotate when flowing in the first guide pipe 6, the worm 18 drives the worm wheel 20 and the first transmission rod 19 to rotate, the first transmission rod 19 drives the plurality of groups of scraping plates 43 to rotate, impurities remained on the upper surface of the filter screen 12 are scraped into the impurity discharging holes 14, the use convenience is improved, the manual labor intensity is reduced, meanwhile, the filter screen 12 can be prevented from being blocked, and the filtering effect is ensured.

The air pump 21 is arranged at the lower end of the treatment equipment main body 1, the left end of the air pump 21 is connected with the square tube 22, and the upper end of the square tube 22 is connected with the check valve 23; an aeration pipe 24 penetrates through the reaction tank 3, the lower end of the aeration pipe 24 is connected with the reaction tank 3 through a sealing bearing, the lower end of the aeration pipe 24 is connected with a check valve 23 in a conducting way, aeration holes 25 are formed in an array outside the aeration pipe 24, and the aeration pipe 24 is connected with the check valve 23 through the sealing bearing; when the air pump 21 is started, high-pressure gas can be conveyed into the aeration pipe 24 through the square pipe 22 and is discharged from the aeration holes 25 to be mixed with sewage; a second impeller 26 is arranged in the square tube 22, a second transmission rod 27 is connected to the upper end sealing bearing of the square tube 22, and the lower end of the second transmission rod 27 penetrates through the square tube 22 and is fixedly connected with the second impeller 26; the upper end of the second transmission rod 27 is connected with a driving gear 28 in a key way, the lower end of the aeration pipe 24 is connected with a driven gear 29, the driving gear 28 is in meshed connection with the driven gear 29, and the diameter of the driving gear 28 is smaller than that of the driven gear 29; the inside fly leaf 30 that is provided with of reaction tank 3, and fly leaf 30 and aeration tube 24 fixed connection, and fly leaf 30 and reaction tank 3 are circular structural design, the fly leaf 30 upper end is connected with first puddler 31, first puddler 31 is provided with four groups, and first puddler 31 array sets up in fly leaf 30 up end, when high-pressure gas flows in square pipe 22 inside, can drive second impeller 26 and second transfer line 27 and rotate, drive this 28 rotation of driving gear through second transfer line 27, drive driven gear 29 and aeration tube 24 rotation when driving gear 28 rotates, drive fly leaf 30 and the first puddler 31 of multiunit through the aeration tube 24 and stir the inside sewage of reaction tank 3, improve the reaction efficiency of sewage.

The movable plate 30 is internally provided with a movable groove 32, the movable groove 32 is internally connected with a sliding plate 33 in a sliding way, the movable groove 32 is internally provided with a spring 34, and two ends of the spring 34 are respectively fixedly connected with the inner wall of the movable groove 32 and the sliding plate 33; the outer part of the sliding plate 33 is connected with a scraping strip 35 through bolts, and the outer end surface of the scraping strip 35 is contacted with the inner wall of the reaction tank 3; the sliding plate 33 and the scraping strip 35 are driven to synchronously rotate when the movable plate 30 rotates, the sliding plate 33 is pushed to move towards the outside of the movable groove 32 through the spring 34, so that the scraping strip 35 can be tightly attached to the inner wall of the reaction tank 3, the inner wall of the reaction tank 3 is cleaned while the scraping strip 35 rotates, and a large amount of sludge is prevented from being attached to the inner wall of the reaction tank 3.

The upper end bearing of the aeration pipe 24 is connected with a movable sleeve 36, the outside of the movable sleeve 36 is fixedly connected with a mounting plate 37, the mounting plate 37 is of a cross-shaped structural design, the lower end of the mounting plate 37 is fixedly connected with a second stirring rod 38, and the second stirring rod 38 and the first stirring rod 31 are arranged in a staggered manner; a fixed circular plate 39 is fixedly arranged at the top end of the reaction tank 3, the upper end of the movable sleeve 36 is connected with the fixed circular plate 39 through a bearing, the upper end of the aeration pipe 24 is connected with a first gear 40 through a key, the lower end of the fixed circular plate 39 is connected with a second gear 41 through a shaft, the second gear 41 is meshed with the first gear 40, a toothed ring 42 is fixedly connected inside the movable sleeve 36, and the toothed ring 42 is meshed with the second gear 41; the first gear 40 is driven to rotate through the rotation of the aeration pipe 24, the toothed ring 42 and the movable sleeve 36 are driven to reversely rotate through the second gear 41, the movable sleeve 36 drives the mounting plate 37 and the second stirring rod 38 to stir from the upper part of the reaction tank 3 while rotating, the stirring effect is improved, and the second stirring rod 38 and the first stirring rod 31 are arranged in a staggered manner, so that flocculation blocks inside the reaction tank 3 can be crushed when the second stirring rod 38 and the first stirring rod 31 reversely rotate, the reaction of activated sludge and sewage is enhanced, and the sewage treatment efficiency is improved conveniently.

While embodiments of the present utility model have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations may be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. The utility model provides a sewage treatment device based on bioengineering principle, includes treatment facility main part (1), reaction tank (3) and sedimentation tank (4), its characterized in that:

a filter tank (2) is arranged in the left end of the treatment equipment main body (1), and a reaction tank (3) is arranged in the middle of the treatment equipment main body (1);

a sedimentation tank (4) is arranged at the right end of the treatment equipment main body (1), the upper end of the filter tank (2) is connected with a water inlet pipe (5), and a first guide pipe (6) is arranged in the filter tank (2);

the upper end of the first conduction pipe (6) is connected with a first water pump (7), the right end of the first water pump (7) is connected with the reaction tank (3) in a conduction way, the bottom end of the reaction tank (3) is connected with a second conduction pipe (8), the upper end of the second conduction pipe (8) is connected with a second water pump (9), and the right end of the second water pump (9) is connected with the sedimentation tank (4) in a conduction way;

the upper end of the right side of the sedimentation tank (4) is connected with a water outlet pipe (10), and the lower end of the right side of the sedimentation tank (4) is connected with a mud discharging pipe (11);

an air pump (21) is arranged at the lower end of the treatment equipment main body (1), the left end of the air pump (21) is connected with a square tube (22), and the upper end of the square tube (22) is connected with a check valve (23);

the reaction tank (3) is internally penetrated with an aeration pipe (24), the lower end of the aeration pipe (24) is connected with the reaction tank (3) through a sealing bearing, the lower end of the aeration pipe (24) is connected with a check valve (23) in a conducting way, an aeration hole (25) is formed in an array outside the aeration pipe (24), and the aeration pipe (24) is connected with the check valve (23) through the sealing bearing.

2. A sewage treatment plant based on the principle of bioengineering according to claim 1, characterised in that: a filter screen (12) is fixedly arranged at the upper end inside the filter tank (2), the upper end of the filter screen (12) is connected with an annular baffle (13), and a impurity discharging hole (14) is formed in the rear side of the filter screen (12);

the lower end of the impurity discharging hole (14) is provided with a diversion square groove (15), the upper end of the diversion square groove (15) is fixedly connected with the filter screen (12), and the diversion square groove (15) penetrates to the outside of the filter tank (2).

3. A sewage treatment plant based on the principle of bioengineering according to claim 2, characterised in that: the utility model discloses a novel electric motor, including first conducting pipe (6), fixed plate (17), worm (18) are connected with in fixed plate (17) inside bearing, and worm (18) right-hand member runs through to inside and first impeller (16) fixed connection of first conducting pipe (6) for square structural design, and inside first impeller (16) that are provided with of first conducting pipe (6), first conducting pipe (6) left end fixedly connected with fixed plate (17).

4. A sewage treatment plant based on the principle of bioengineering according to claim 3, characterised in that: the filter screen (12) is internally provided with a bearing connected with a first transmission rod (19), the lower end of the first transmission rod (19) penetrates through the fixed plate (17), the lower end of the first transmission rod (19) is connected with a worm wheel (20) in a key manner, and the worm wheel (20) is in meshed connection with a worm (18);

the upper end of the first transmission rod (19) is connected with scrapers (43), four groups of scrapers (43) are arranged in an array, and the lower ends of the scrapers (43) are in contact with the upper surface of the filter screen (12).

5. A sewage treatment plant based on the principle of bioengineering according to claim 1, characterised in that: a second impeller (26) is arranged inside the square tube (22), a second transmission rod (27) is connected to the upper end sealing bearing of the square tube (22), and the lower end of the second transmission rod (27) penetrates through the inside of the square tube (22) and is fixedly connected with the second impeller (26);

the upper end key of second transfer line (27) is connected with driving gear (28), aeration pipe (24) lower extreme is connected with driven gear (29), and driving gear (28) and driven gear (29) meshing are connected, and driving gear (28) diameter is less than driven gear (29) diameter.

6. A sewage treatment plant based on the principle of bioengineering according to claim 1, characterised in that: the reaction tank (3) is internally provided with a movable plate (30), the movable plate (30) is fixedly connected with the aeration pipe (24), the movable plate (30) and the reaction tank (3) are of circular structural design, the upper end of the movable plate (30) is connected with a first stirring rod (31), the first stirring rods (31) are provided with four groups, and the first stirring rod (31) array is arranged on the upper end face of the movable plate (30).

7. The sewage treatment apparatus based on the bioengineering principle according to claim 6, wherein: the movable plate (30) is internally provided with a movable groove (32), the movable groove (32) is internally connected with a sliding plate (33) in a sliding manner, the movable groove (32) is internally provided with a spring (34), and two ends of the spring (34) are fixedly connected with the inner wall of the movable groove (32) and the sliding plate (33) respectively;

the outside bolted connection of sliding plate (33) has scrapes strip (35), and scrapes strip (35) outer terminal surface and reaction tank (3) inner wall contact.

8. A sewage treatment plant based on the principle of bioengineering according to claim 1, characterised in that: the aeration pipe (24) upper end bearing is connected with movable sleeve (36), and the outside fixedly connected with mounting panel (37) of movable sleeve (36), mounting panel (37) are "cross" font structural design, and mounting panel (37) lower extreme fixedly connected with second puddler (38) to second puddler (38) and first puddler (31) crisscross setting.

9. A sewage treatment plant based on the principle of bioengineering according to claim 1, characterised in that: a fixed circular plate (39) is fixedly arranged at the top end of the reaction tank (3), and the upper end of the movable sleeve (36) is connected with the fixed circular plate (39) through a bearing;

the upper end of the aeration pipe (24) is connected with a first gear (40) in a key way, the lower end of the fixed circular plate (39) is connected with a second gear (41) in a shaft way, and the second gear (41) is in meshed connection with the first gear (40);

the movable sleeve (36) is internally fixedly connected with a toothed ring (42), and the toothed ring (42) is meshed with the second gear (41).

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