CN114835341A - Village and town sewage treatment device and treatment process - Google Patents

Abstract

The invention discloses a village and town sewage treatment device and a treatment process, and relates to the technical field of village and town sewage treatment, the device comprises an aerobic tank and a uniform aeration unit, wherein the uniform aeration unit comprises a three-way joint, an arched air outlet pipe, an aeration head and an air outlet pipe buffering and limiting assembly; aeration coverage is big, improves the aerobic reaction in the good oxygen pond, does benefit to good oxygen fungus and to the organic matter decomposition in the sewage, avoids influencing the quality of air around, and the change that filters the material can convenient and fast when filtering realizes the change of not shutting down, reduces to change the extravagant time of filtering the material, can improve sewage filterable efficiency.

Description

Village and town sewage treatment device and treatment process

Technical Field

The invention relates to the technical field of village and town sewage treatment, in particular to a village and town sewage treatment device and a village and town sewage treatment process.

Background

At present, with the increase of population and the acceleration of urbanization process, domestic pollution of residents gradually replaces industrial pollution to become a first pollution factor of a water body, centralized treatment of sewage under the collection coverage rate of a high pipe network in an urban area is undoubtedly a correct choice, environmental protection of villages and towns is ignored for a long time, domestic water pollution of the villages and the towns is more serious, and with the continuous promotion of construction of new villages and towns, the problem of water pollution of the villages and the towns is increasingly prominent;

in order to solve the problems, the Chinese utility model patent with the publication number of CN207608466U discloses a village and town sewage treatment device, which comprises an anaerobic tank, an aerobic tank, a sedimentation tank, filter materials, adsorption fillers and a sludge concentration tank, wherein the water inlet of the village and town sewage treatment device is arranged at the position opposite to a sludge backflow water outlet, an aeration pipeline at the bottom of the aerobic tank is provided with a flow hole, two groups of parallel clapboards in the aerobic tank are arranged to play the role of a reinforcing rib, and a flow dispersing cap at the outlet of a water inlet pipeline of the sedimentation tank;

although the patent solves the problem that the water pollution of villages and towns is increasingly outstanding, the following defects still exist: 1. the area covered by the aeration device in the aerobic tank is limited, and the retention time of the gas in the aerobic tank is short, so that the oxygen content in the aerobic tank does not reach an ideal state, and the aerobic reaction efficiency in the aerobic tank is low; 2. Odor in the sewage can be emitted during aeration, so that the quality of surrounding air is influenced; 3. the filtering material can be blocked and become invalid quickly when sewage is filtered, and the time consumed for replacing the filtering material influences the sewage filtering efficiency.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the existing defects and provide a village and town sewage treatment device and a treatment process, the aeration coverage is large, gas can be kept in an aerobic tank for a long time, the oxygen content in the aerobic tank is ensured to be in an ideal interval, the aerobic reaction in the aerobic tank is improved, the decomposition of organic matters in sewage by aerobic bacteria is facilitated, meanwhile, odor discharged by aeration can be filtered, the influence on the quality of surrounding air is avoided, the filtering material can be conveniently and quickly replaced during filtering, the replacement without shutdown is realized, the time wasted by replacing the filtering material is reduced, the sewage filtering efficiency can be improved, and the problems in the background technology can be effectively solved.

In order to achieve the purpose, the invention provides the following technical scheme: a villages and small towns sewage treatment plant, includes good oxygen pond, still includes:

the uniform aeration unit comprises a three-way joint, two air inlet pipes, electromagnetic valves, hoses, shaft seats, rotating shafts, arch-shaped air outlet pipes, aeration heads and air outlet pipe buffering and limiting assemblies, wherein the front end of the bottom of the aerobic tank is provided with the two air inlet pipes in a penetrating way, the two air inlet pipes are respectively connected with the electromagnetic valves in series, one ends of the two air inlet pipes, which are positioned outside the aerobic tank, are respectively connected with two outlets of the three-way joint, one ends of the two air inlet pipes, which are positioned inside the aerobic tank, are respectively connected with one ends of the two hoses, the front end and the rear end of the bottom inside the aerobic tank are provided with the two shaft seats, the two shaft seats are rotatably connected with the longitudinal rotating shafts, the two arch-shaped air outlet pipes are symmetrically arranged on two sides of the rotating shafts, the tops of the two arch-shaped air outlet pipes are respectively provided with the aeration heads at equal intervals, the other ends of the two hoses are respectively connected with the two arch-shaped air outlet pipes buffering and limiting assemblies are arranged at the bottom inside the aerobic tank, the two air pipe buffering and limiting assemblies are respectively positioned below the middle parts of the two arched air outlet pipes;

and the air attachment unit is arranged in the middle of the aerobic tank.

The inlet of the three-way joint is connected with an external air pump, air is pumped into the three-way joint through the external air pump, the air enters the arched air outlet pipe through the two air inlet pipes and the hose, then the air is sprayed into sewage in the aerobic tank through the aeration head on the arched air outlet pipe, an electromagnetic valve is closed by using an external controller, the other electromagnetic valve is opened, the rotating shaft can rotate relative to the shaft seat by utilizing the recoil force of the air sprayed by the aeration head, the angle of the arched air outlet pipe is changed at the moment, the orientation of the aeration head is changed, the aeration range can be expanded, the sewage in the aerobic tank can fully generate aerobic reaction, the descending arched air outlet pipe stops when touching the air outlet pipe buffering and limiting component, the arched air outlet pipe is prevented from colliding the bottom in the aerobic tank, then the external controller switches the switches of the two electromagnetic valves, the rotating shaft reversely rotates, and the other arched air outlet pipe stops when touching the air outlet pipe buffering and limiting component, the activity in turn from top to bottom of two arch outlet ducts in proper order and aeration head orientation constantly change, improve the aeration effect, make in the aerobic tank sewage fully contact with oxygen, the air adheres to the unit and can adheres to the air, makes the air adhere to the unit stay in the sewage in aerobic tank for a long time, makes aerobic reaction fully go on.

Further, the air adheres to the unit and includes fixed subassembly, spacing otter board and air and adheres to the ball, the middle part is through two fixed subassembly fixedly connected with two spacing otter boards in the aerobic tank, forms between two spacing otter boards and adheres to the ball chamber, it is filled with air and adheres to the ball to adhere to the intracavity, air adheres to and has evenly seted up the air on the ball and adheres to the hole.

Fixed subassembly is used for the spacing otter board of detachable installation, and two spacing otter boards are spacing to a large amount of air adhesion balls, avoid the air to adhere to the ball and float at the interior sewage top of aerobic tank, and the air adopts the sponge ball to adhere to the ball, does benefit to the absorption bubble, makes the contact of air and sewage longer time.

Further, still include the filter container unit, the filter container unit includes rose box, filter residue deposit discharge subassembly, preceding case lid and bolt six, the installing port of rose box front end is fixed with preceding case lid through bolt six, the one end of sewage transfer subassembly is connected to bottom one side in good oxygen pond, the bottom side of preceding case lid is connected to the other end of sewage transfer subassembly, the bottom logical groove of rose box is connected with filter residue deposit discharge subassembly.

The sewage transfer assembly transfers the sewage from the aerobic tank into the filter box, the filter residue deposition and discharge assembly at the bottom of the filter box can collect the filtered filter residue, the filter residue is prevented from moving in the aerobic tank to block a filter material, and the front box cover is convenient for opening the mounting opening of the filter box;

further, filter residue deposit discharge assembly includes frustum filter residue collecting box, bottom, five bolt, swash plate and the board of falling V, the top of frustum filter residue collecting box is connected to the bottom of rose box through groove, the four corners of five fixed connection bottoms of bolt is passed through in the bottom discharge port four corners of frustum filter residue collecting box, both sides are equipped with the swash plate respectively in the frustum filter residue collecting box, one side horizontal position that the swash plate is close to middle part in the frustum filter residue collecting box is less than the horizontal position of opposite side, the position that lies in between two swash plates in the frustum filter residue collecting box is equipped with the board of falling V.

The filter residue which is filtered can fall into the frustum filter residue collecting box along with gravity and slide down to the bottom in the frustum filter residue collecting box along the inclined planes of the inclined plate and the inverted V-shaped plate, the filter residue is prevented from turning over again along with the flow of water by using the inclined plate and the inverted V-shaped plate, the bottom cover can be opened after more filter residue is collected in the frustum filter residue collecting box, the filter residue can be discharged, and the frequency of opening the bottom cover can be reduced and the filtering efficiency can be improved due to the collecting capacity of the frustum filter residue collecting box;

the sewage filter unit comprises a mesh inner cylinder, an outer filter cylinder, a stop lever, a clamping rectangular frame, a sealing rubber block, replaceable filter cloth, a rear cover, a third bolt, a front cover, a fourth bolt and a drain pipe, wherein the drain pipe penetrates through the middle part of the front end of the filter box, the longitudinal mesh inner cylinder is arranged at the middle part in the filter box, the outer filter cylinder is arranged on the outer side of the mesh inner cylinder, an annular gap is reserved between the mesh inner cylinder and the outer filter cylinder, the front end of the mesh inner cylinder and the front end of the outer filter cylinder are in sealing connection, the front end of the outer filter cylinder is connected with the front cover through the fourth bolt, the end part of the drain pipe penetrates through a through hole in the middle part of the front cover and extends to the middle part in the mesh inner cylinder, a rectangular notch is formed in the top of the outer filter cylinder, the stop lever is arranged at the position, which is located in the middle part of the rectangular notch, and the clamping rectangular frame is clamped on two sides of the stop lever respectively, inlay in the top rectangle mounting hole of rose box and have the sealed piece of gluing, the bottom of sealed piece of gluing supports the rectangle breach of straining a section of thick bamboo top outward, be equipped with removable filter cloth in the annular gap, two rectangle through-holes on two joint rectangle frames and the sealed piece of gluing are passed in proper order in the both ends of removable filter cloth and extend to the upside of rose box, the rear end of straining a section of thick bamboo outward is connected with the back lid through bolt three.

Sewage enters into the rose box earlier, then strain a section of thick bamboo through outer in proper order, removable filter cloth and mesh inner tube filter the back and enter into inside the mesh inner tube, then through the water after the drain pipe discharge filters, joint rectangle frame and sealed rubber block carry on spacingly to the tip of removable filter cloth, drag the one end of removable filter cloth, the other end of removable filter cloth can progressively enter into the annular gap, can change the filtration position of removable filter cloth, removable filter cloth filters the material as the principal power, change removable filter cloth under the convenient state that does not shut down, improve the filtration efficiency of sewage, can solve removable filter cloth fast and use the change problem after excessively.

Further, still put the change unit including the filter cloth book, the filter cloth book is put the change unit and is included support, axis of rotation, joint prism, is rolled up and put roller, rhombus card hole and synchronous rotating assembly, the top front side of rose box is located the position of sealed gluey piece front side and is equipped with the support, it is connected with two fore-and-aft axes of rotation to rotate on the support, and two joints are prismatic to be connected respectively to the rear end of two axes of rotation, and the rear end of two joints prisms is rolled up the rhombus card hole joint of putting roller front end middle part with two respectively, and synchronous rotating assembly is connected to the front end of two axes of rotation.

The synchronous rotating assembly can drive the two rotating shafts to rotate in the same direction relative to the support, the two clamping prisms are respectively clamped and installed with the two winding and unwinding rollers, one winding and unwinding roller releases the wound replaceable filter cloth when the two winding and unwinding rollers rotate in the same direction, and the other winding and unwinding roller winds the used replaceable filter cloth to finish replacement of the filtering position of the replaceable filter cloth;

further, still include to roll up and put the roller and rotate the compressing unit, the top rear side of rose box is located two rolls up and is put the position at roller rear and install two rolls up respectively and put the roller and rotate compressing unit, and two rolls up to put the roller and rotate compressing unit front end compress tightly prismatic with two rolls up the rhombus card hole joint that put roller rear end middle part respectively. The rolling and releasing roller rotating and pressing unit can press the rear ends of the two rolling and releasing rollers, so that the rolling and releasing rollers are prevented from loosening backwards from the clamping prism, and the rotation of the rolling and releasing rollers is not influenced;

further, still include the outer wall and scrape the unit, the outer wall is scraped the unit and is included connecting axle, side square sleeve, connecting block one, pressure spring, connecting block two, L shape pole, scraper blade and rotation power component, the middle part of protecgulum lid is rotated through sealed bearing and is connected with the connecting axle, the connecting axle is located the outer one end of protecgulum lid and is connected rotation power component, the one end that the connecting axle is located the rose box is connected with the side of perpendicular to connecting axle axis and overlaps, the one end sliding connection of side square sleeve and L shape pole, the tip of side square sleeve is equipped with connecting block one, the middle part of L shape pole is equipped with connecting block two, connecting block two and connecting block one are through compressing spring connection, the scraper blade is connected to the other end of L shape pole, the outside sliding connection of the section of thick bamboo is strained with the scraper blade outward.

The power assembly is rotated to drive the connecting shaft to rotate so as to drive the lateral square sleeve to rotate, the L-shaped rod always tends to move towards the connecting shaft under the action of the compression spring, so that the scraping plate is in close contact with the outer wall of the outer filter cylinder, filter residues filtered outside the outer filter cylinder can be effectively scraped, the filter residues fall down, and the probability of blockage of the outer filter cylinder is reduced.

Further, still include the deodorization unit that exhausts, the deodorization unit that exhausts is installed to the discharge port in the top of good oxygen pond, can filter the foul smell of the discharge port exhaust in the top of good oxygen pond.

Further, a treatment process of the village and town sewage treatment device comprises the following steps:

the method comprises the following steps: connecting an air inlet of the three-way joint with an external air pump, pumping air into the arched air outlet pipe by the external air pump through an air inlet pipe and a hose, and allowing the air to emerge from the aeration head to enable the aerobic tank to be rich in nutrients;

step two: the left electromagnetic valve and the right electromagnetic valve are opened and closed alternately, the left arched air outlet pipe and the right arched air outlet pipe move up and down alternately by utilizing the recoil force of the air outlet of the aeration head, so that the orientation of the aeration head on the arched air outlet pipes is changed continuously, and the aeration range is expanded;

step three: the gas is attached to the air attaching balls when passing through the air attaching unit, so that the contact time of the gas and the sewage in the aerobic tank is prolonged, and the aerobic reaction in the aerobic tank is fully performed;

step four: the gas is discharged from the exhaust deodorization unit at the top of the aerobic tank, and the odor carried by the gas is absorbed and filtered by the exhaust deodorization unit;

step five: the water treated in the aerobic tank is transferred into the filter box through the sewage transfer component, filtered through the outer filter cylinder and the replaceable filter cloth and then discharged by the drain pipe;

step six: when more filter residues are blocked at the outer side of the outer filter cylinder, the outer wall scraping unit is used for scraping the filter residues, and the filter residues fall into the filter residue deposition and discharge assembly for temporary storage;

step seven: after the partial filtering effect of the replaceable filter cloth in the annular gap is changed, the synchronous rotating assembly in the filter cloth winding and unwinding replacing unit is used for driving the two winding and unwinding rollers to rotate in the same direction, one winding and unwinding roller releases the replaceable filter cloth, the other winding and unwinding roller winds the replaceable filter cloth, and the using position of the replaceable filter cloth is changed.

Compared with the prior art, the invention has the beneficial effects that: the village and town sewage treatment device and the treatment process have the following advantages:

1. an inlet of the three-way joint is connected with an external air pump, air is pumped into the three-way joint through the external air pump, the air enters the arched air outlet pipe through the two air inlet pipes and the hose, then is sprayed into sewage in the aerobic tank through an aeration head on the arched air outlet pipe, an external controller is used for closing one electromagnetic valve and opening the other electromagnetic valve, the rotating shaft can rotate relative to the shaft seat by utilizing the recoil force of the air sprayed by the aeration head, the angle of the arched air outlet pipe is changed at the moment, the orientation of the aeration head is changed, the aeration range can be expanded, and the sewage in the aerobic tank can be fully subjected to aerobic reaction;

2. the external controller switches the switches of the two electromagnetic valves, the rotating shaft rotates reversely, the other arched air outlet pipe stops when contacting the air outlet pipe buffering and limiting assembly, the up-and-down alternate movement of the two arched air outlet pipes and the orientation of the aeration head are changed continuously in sequence, the aeration effect is improved, the sewage in the aerobic tank is fully contacted with oxygen, the air attachment unit can attach air, the air attachment unit is left in the sewage in the aerobic tank for a long time, and the aerobic reaction is fully performed;

3. sewage firstly enters a filter box, then enters the inside of the mesh inner cylinder after being filtered by the outer filter cylinder, the replaceable filter cloth and the mesh inner cylinder in sequence, and then is discharged through a drain pipe, the end part of the replaceable filter cloth is limited by the clamping rectangular frame and the sealing rubber block, one end of the replaceable filter cloth is pulled, the other end of the replaceable filter cloth can gradually enter the annular gap, the filtering position of the replaceable filter cloth can be changed, the replaceable filter cloth is used as a main filtering material, the replaceable filter cloth can be conveniently replaced in a non-shutdown state, the filtering efficiency of the sewage is improved, and the problem of replacement after the replaceable filter cloth is overused can be quickly solved;

4. aeration coverage is big, gaseous can keep somewhere longer time in good oxygen pond, it is located the ideal interval to ensure oxygen content in good oxygen pond, improve the aerobic reaction in good oxygen pond, do benefit to good oxygen fungus and to the organic matter decomposition in the sewage, can filter aeration exhaust foul smell simultaneously, avoid influencing the quality of air on every side, filter the change that the material can convenient and fast when filtering, realize the change of not shutting down, reduce the time of changing the waste of filter material, can improve the filterable efficiency of sewage.

Drawings

FIG. 1 is a schematic view of the sewage treatment apparatus of villages and towns according to the present invention;

FIG. 2 is a schematic view of a cross-sectional structure of an aerobic tank in a rear view of the village and town sewage treatment apparatus of the present invention;

fig. 3 is a schematic view of a part of an enlarged structure at a position a in fig. 2 of the village and town sewage treatment device of the present invention;

fig. 4 is a schematic view of a part of an enlarged structure at a position B in fig. 2 of the village and town sewage treatment device of the present invention;

FIG. 5 is a schematic view of the rear internal structure of the filtering box of the village and town sewage treatment plant of the present invention;

FIG. 6 is a partial schematic view of a sewage filtering unit of the sewage treatment apparatus for villages and small towns according to the present invention;

fig. 7 is a schematic view of a part of an enlarged structure at C in fig. 6 of the sewage treatment plant in villages and towns according to the present invention;

FIG. 8 is a schematic sectional view of a filtering container unit of the sewage treatment plant of villages and small towns according to the present invention;

fig. 9 is a schematic view of the front internal structure of the filter box of the village and town sewage treatment device of the present invention;

fig. 10 is a partial front internal structure view of a filter box of the town sewage treatment apparatus according to the present invention.

In the figure: 1 aerobic pool, 2 uniform aeration units, 21 three-way joints, 22 air inlet pipes, 23 electromagnetic valves, 24 hoses, 25 shaft seats, 26 rotating shafts, 27 arched air outlet pipes, 28 aeration heads, 29 telescopic rods, 210 buffer springs, 211 limiting plates, 212 shock absorption sleeves, 3 air attachment units, 31 installation frames, 32 bolt I, 33 limiting screen plates, 34 air attachment balls, 4 exhaust deodorization units, 41 fixing sleeves, 42 bolt II, 43 frustum gas collection hoods, 44 exhaust channels, 45 activated carbon adsorption plates, 46 pillars, 47 baffle plates, 5 sewage filtration units, 51 mesh inner cylinders, 52 outer filter cylinders, 53 baffle rods, 54 clamping rectangular frames, 55 sealing rubber blocks, 56 replaceable filter cloth, 57 rear covers, 58 bolt III, 59 front covers, 510 bolt IV, 511 drain pipes, 6 filter cloth rolling and replacing units, 61 supports, 62 rotating shafts, 63 limiting end plate I, 64 clamping prisms, 65 rolling and releasing roller, 66 limiting rings, 67 motor bases, 68 reeling and unreeling motors, 69 belt pulleys, 610 synchronous belts, 611 diamond-shaped clamping holes, 7 reeling and unreeling roller rotating and pressing units, 71 mounting frames, 72 longitudinal sliding columns, 73 threaded rods, 74 knobs, 75 driven shafts, 76 pressing and moving plates, 77 limiting end plate II, 78 pressing prisms, 8 outer wall scraping units, 81 connecting shafts, 82 side square sleeves, 83 connecting block I, 84 pressing springs, 85 connecting block II, 86L-shaped rods, 87 scraping plates, 88 scraping motors, 89 driving gears, 810 driven gears, 9 filtering container units, 91 filtering boxes, 92 frustum filter residue collecting boxes, 93 bottom covers, 94 bolt V, 95 front box covers, 96 bolt six, 97 inclined plates, 98 inverted V-shaped plates, 10 sewage transfer assemblies, 101 bottom pipes, 102 liquid pumps, 103 transfer pipes and 104 water receiving pipes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the first embodiment, referring to fig. 1 to 10, the present embodiment provides a technical solution: the utility model provides a villages and small towns sewage treatment plant, includes good oxygen pond 1, and the water inlet can be connected to the top side in good oxygen pond 1, pours into sewage from the water inlet into, still includes:

the uniform aeration unit 2 comprises a three-way joint 21, two air inlet pipes 22, an electromagnetic valve 23, hoses 24, shaft seats 25, a rotating shaft 26, arch-shaped air outlet pipes 27, an aeration head 28 and an air outlet pipe buffering and limiting assembly, wherein the front end of the bottom of the aerobic tank 1 is provided with the two air inlet pipes 22 in a penetrating way, the two air inlet pipes 22 are respectively connected with the electromagnetic valve 23 in series, one ends of the two air inlet pipes 22 outside the aerobic tank 1 are respectively connected with two outlets of the three-way joint 21, one ends of the two air inlet pipes 22 in the aerobic tank 1 are respectively connected with one end of the two hoses 24, the front end and the rear end of the bottom in the aerobic tank 1 are provided with the two shaft seats 25, the two shaft seats 25 are rotatably connected with the longitudinal rotating shaft 26, two arch-shaped air outlet pipes 27 are symmetrically arranged on two sides of the rotating shaft 26, the aeration heads 28 are respectively arranged at equal intervals on the tops of the two arch-shaped air outlet pipes 27, and the other ends of the two hoses 24 are respectively connected with the two arch-shaped air outlet pipes 27, the bottom in the aerobic tank 1 is provided with two air pipe buffering and limiting assemblies which are respectively positioned below the middle parts of the two arched air outlet pipes 27;

the air outlet pipe buffering and limiting assembly comprises a telescopic rod 29, a buffer spring 210, a limiting plate 211 and a buffering sleeve 212, two telescopic rods 29 are arranged at the bottom in the aerobic pool 1, the limiting plate 211 is fixed at the top of each telescopic rod 29, the buffering sleeve 212 is sleeved on the upper side of the limiting plate 211, the buffering sleeve 212 adopts a rubber sleeve, the buffer spring 210 is sleeved on each telescopic rod 29, the buffering sleeve 212 is touched when the arched air outlet pipe 27 moves downwards in an inclined mode, knocking on the limiting plate 211 is reduced, buffering is realized by using the buffer spring 210 when the telescopic rods 29 are shortened, the force when the arched air outlet pipe 27 is touched with the buffering sleeve 212 is reduced, and deformation and damage of the arched air outlet pipe 27 caused by collision can be avoided;

and the air attachment unit 3 is arranged in the middle of the aerobic tank 1.

Air adheres to unit 3 and includes fixed subassembly, spacing otter board 33 and air and adheres to ball 34, and the middle part is through two fixed subassembly fixedly connected with spacing otter boards 33 in the good oxygen pond 1, forms between two spacing otter boards 33 and adheres to the ball chamber, adheres to the ball intracavity and fills in and have had air to adhere to ball 34, has evenly seted up the air on the air adheres to ball 34 and has adhered to the hole.

Fixed subassembly is used for the spacing otter board 33 of detachable installation, and two spacing otter boards 33 are spacing to a large amount of air attached balls 34, avoid air attached balls 34 to float at the interior sewage top of good oxygen pond 1, and air attached balls 34 adopts the sponge ball, do benefit to the adsorption of bubbles, make the contact of air and sewage for a long time.

The fixing component comprises mounting frames 31 and a first bolt 32, two mounting frames 31 are arranged in the middle of the aerobic tank 1, a distance is reserved between the two mounting frames 31, four corners of the two mounting frames 31 are fixedly connected with four corners of two limiting screen plates 33 through the first bolt 32 respectively, the limiting screen plates 33 can be detached, and air attaching balls 34 can be conveniently placed in the attaching ball cavities;

the inlet of the three-way joint 21 is connected with an external air pump, air is pumped into the three-way joint 21 by the external air pump, the air enters the arched air outlet pipe 27 through the two air inlet pipes 22 and the hose 24, and then is sprayed into the sewage in the aerobic tank 1 through the aeration head 28 on the arched air outlet pipe 27, an external controller is used for closing one electromagnetic valve 23 and opening the other electromagnetic valve 23, at the moment, the rotating shaft 26 can rotate relative to the shaft seat 25 by utilizing the recoil force of the air sprayed out by the aeration head 28, the angle of the arched air outlet pipe 27 is changed at the moment, the orientation of the aeration head 28 is changed, the aeration range can be expanded, the sewage in the aerobic tank 1 can fully generate aerobic reaction, the descending arched air outlet pipe 27 stops when contacting with the air outlet pipe buffering and limiting component, the arched air outlet pipe 27 is prevented from colliding with the inner bottom of the aerobic tank 1, and then the external controller switches the switches of the two electromagnetic valves 23, the reverse rotation of pivot 26 makes another arch outlet duct 27 touch and stops when the spacing subassembly of outlet duct buffering, and the activity in turn about two arch outlet ducts 27 is constantly changed with aeration head 28 orientation, improves the aeration effect, makes aerobic tank 1 in the sewage fully contact with oxygen, and air adheres to unit 3 and can adheres to the air, makes the air adhere to the unit 3 for a long time in the sewage of staying aerobic tank, makes aerobic reaction fully go on.

Still include filter tank unit 9, filter tank unit 9 includes rose box 91, filter residue deposit discharge assembly, preceding case lid 95 and six 96 of bolt, the installing port of rose box 91 front end is fixed with preceding case lid 95 through six 96 of bolt, the one end of sewage transfer subassembly 10 is connected to the bottom one side in good oxygen pond 1, the bottom side of preceding case lid 95 is connected to the other end of sewage transfer subassembly 10, the logical groove connection in the bottom of rose box 91 has filter residue deposit discharge assembly.

The sewage transfer component 10 transfers the sewage from the aerobic tank 1 into the filter box 91, the filter residue deposition and discharge component at the bottom of the filter box 91 can collect the filtered filter residue, so that the filter residue is prevented from moving in the aerobic tank 1 to block the filter material, and the front box cover 95 is convenient for opening the mounting opening of the filter box 91;

the filter residue deposition and discharge assembly comprises a frustum filter residue collection box 92, a bottom cover 93, five bolts 94, inclined plates 97 and inverted V-shaped plates 98, the bottom of the filter box 91 is connected with the top of the frustum filter residue collection box 92 through a groove, four corners of a bottom discharge port of the frustum filter residue collection box 92 are fixedly connected with four corners of the bottom cover 93 through the five bolts 94, the inclined plates 97 are respectively arranged on two sides in the frustum filter residue collection box 92, the horizontal position of one side of the middle part of the inclined plates 97, which is close to the middle part in the frustum filter residue collection box 92, is lower than the horizontal position of the other side, and the inverted V-shaped plates 98 are arranged between the two inclined plates 97 in the frustum filter residue collection box 92.

The filtered filter residue can fall into the frustum filter residue collecting box 92 along with gravity and slide down to the bottom in the frustum filter residue collecting box 92 along the inclined planes of the inclined plate 97 and the inverted V-shaped plate 98, the filter residue is prevented from turning over again along with the flow of water by using the inclined plate 97 and the inverted V-shaped plate 98, the bottom cover 93 is opened after more filter residue is collected in the frustum filter residue collecting box 92, the filter residue can be discharged, the frequency of opening the bottom cover 93 can be reduced due to the collecting capacity of the frustum filter residue collecting box 92, and the filtering efficiency is improved;

the sewage filter unit comprises a sewage filter unit 5, the sewage filter unit 5 comprises a mesh inner cylinder 51, an outer filter cylinder 52, a stop lever 53, a clamping rectangular frame 54, a sealing rubber block 55, replaceable filter cloth 56, a rear cover 57, a third bolt 58, a front cover 59, a fourth bolt 510 and a drain pipe 511, the drain pipe 511 penetrates through the middle part of the front end of the filter box 91, the longitudinal mesh inner cylinder 51 is arranged in the middle part of the filter box 91, the outer filter cylinder 52 is arranged on the outer side of the mesh inner cylinder 51, an annular gap is reserved between the mesh inner cylinder 51 and the outer filter cylinder 52, the front ends of the mesh inner cylinder 51 and the outer filter cylinder 52 are in sealing connection, the front end of the outer filter cylinder 52 is connected with the front cover 59 through the fourth bolt 510, the end part of the drain pipe 511 penetrates through a through hole in the middle part of the front cover 59 and extends to the middle part of the mesh inner cylinder 51, a rectangular notch is formed in the top of the outer filter cylinder 52, the stop lever 53 is arranged on the middle part of the outer side of the rectangular notch, the both sides of pin 53 joint respectively have joint rectangle frame 54, it has sealed gluey piece 55 to inlay in the top rectangle installation mouth of rose box 91, the bottom of sealed gluey piece 55 supports the rectangle breach at outer section of thick bamboo 52 top, be equipped with removable filter cloth 56 in the annular gap, two rectangle through-holes on two joint rectangle frames 54 and the sealed gluey piece 55 are passed in proper order in the both ends of removable filter cloth 56 and extend to the upside of rose box 91, the rear end of outer section of thick bamboo 52 is connected with back lid 57 through three 58 bolts.

Sewage enters the filter box 91 first, then filter cartridge 52 outside in proper order, removable filter cloth 56 and mesh inner tube 51 filter the back and enter into inside the mesh inner tube 51, then discharge the water after filtering through drain pipe 511, joint rectangle frame 54 and sealed rubber block 55 carry on spacingly to the tip of removable filter cloth 56, pull the one end of removable filter cloth 56, the other end of removable filter cloth 56 can progressively enter into the annular gap, can change the filtration position of removable filter cloth 56, removable filter cloth 56 filters the material as the main power, conveniently change removable filter cloth 56 under the state of not shutting down, improve the filtration efficiency of sewage, can solve removable filter cloth 56 fast and use the change problem after excessively.

A treatment process of a village and town sewage treatment device comprises the following steps:

the method comprises the following steps: the air inlet of the three-way joint 21 is connected with an external air pump, the external air pump pumps air into the arched air outlet pipe 27 through the air inlet pipe 22 and the hose 24, and the air is emitted from the aeration head 28 to enrich the aerobic tank 1;

step two: the left electromagnetic valve 23 and the right electromagnetic valve 23 are opened and closed alternately, the left arched air outlet pipe 27 and the right arched air outlet pipe 27 move up and down alternately by utilizing the recoil force of the air outlet of the aeration head 28, so that the orientation of the aeration head 28 on the arched air outlet pipe 27 is changed continuously, and the aeration range is expanded;

step three: when the gas passes through the air attachment unit 3, the gas is attached to the air attachment balls 34, so that the contact time with the sewage in the aerobic tank 1 is prolonged, and the aerobic reaction in the aerobic tank 1 is fully performed;

step four: the gas is discharged from an exhaust deodorization unit 4 at the top of the aerobic tank 1, and the odor carried in the gas is absorbed and filtered by the exhaust deodorization unit 4;

step five: the water treated in the aerobic tank 1 is transferred into the filter box 91 through the sewage transfer component 10, filtered by the outer filter cylinder 52 and the replaceable filter cloth 56 and then discharged by the drain pipe 511;

step six: when more filter residues are blocked at the outer side of the outer filter cylinder 52, the outer wall scraping unit 8 is used for scraping the filter residues, and the filter residues fall into the filter residue deposition and discharge assembly for temporary storage;

step seven: after partial filtering effect of the replaceable filter cloth 56 in the annular gap is deteriorated, the synchronous rotating assembly in the filter cloth rolling and releasing replacing unit 6 is used for driving the two rolling and releasing rollers 65 to rotate in the same direction, one rolling and releasing roller 65 releases the replaceable filter cloth 56, and the other rolling and releasing roller retracts the replaceable filter cloth 56, so that the using position of the replaceable filter cloth 56 is changed.

In the second embodiment, referring to fig. 2-3, the present embodiment provides a technical solution: the embodiment has the same structure as the embodiment, and is characterized in that:

still put change unit 6 including the filter cloth book, the filter cloth book is put change unit 6 and is included support 61, axis of rotation 62, joint prism 64, roll up and put roller 65, rhombus card hole 611 and synchronous rotating assembly, the top front side of rose box 91 is located the position of sealed gluey piece 55 front side and is equipped with support 61, it is connected with two fore-and-aft axis of rotation 62 to rotate on the support 61, two joint prism 64 are connected respectively to two axis of rotation 62's rear end, the rear end of two joint prisms 64 respectively with two roll up the rhombus card hole 611 joint of putting roller 65 front end middle parts, two rolls up the both sides of putting the fixed removable filter cloth 56 of winding respectively of roller 65, synchronous rotating assembly is connected to two axis of rotation 62's front end.

The filter cloth winding and unwinding replacing unit 6 further comprises a first limiting end plate 63 and a first limiting ring 66, the first limiting end plate 63 is arranged at one end, connected with the rotating shaft 62, of the clamping prism 64, the limiting rings 66 are respectively arranged at two ends of the winding and unwinding roller 65, and the limiting rings 66 can limit the side edge of the replaceable filter cloth 56 wound on the winding and unwinding roller 65;

the synchronous rotating assembly can drive the two rotating shafts 62 to rotate in the same direction relative to the support 61, the two clamping prisms 64 are respectively clamped and provided with the two winding and unwinding rollers 65, one winding and unwinding roller 65 releases the wound replaceable filter cloth 56 when the two winding and unwinding rollers 65 rotate in the same direction, and the other winding and unwinding roller 65 winds the used replaceable filter cloth 56 to finish the replacement of the filtering position of the replaceable filter cloth 56;

synchronous rotating assembly includes motor cabinet 67, roll up and put motor 68, belt pulley 69, synchronous belt 610, the front end difference fixedly connected with belt pulley 69 of two axis of rotation 62, two belt pulleys 69 pass through synchronous belt 610 transmission and connect, and the output shaft of motor 68 is put to the front end fixed connection of one of them axis of rotation 62, roll up and put motor 68 and pass through motor cabinet 67 and fix the top at rose box 91, roll up and put motor 68 work and can drive two axis of rotation 62 syntropy synchronous rotations through belt pulley 69 and synchronous belt 610 transmission.

In the third embodiment, referring to fig. 2 and 4, the present embodiment provides a technical solution: the village and town sewage treatment device has the same structure as the second embodiment, and is characterized in that:

the rolling and releasing roller rotating and pressing unit 7 is further included, two rolling and releasing roller rotating and pressing units 7 are respectively installed at the positions, located behind the two rolling and releasing rollers 65, of the rear side of the top of the filter box 91, and the pressing prisms 78 at the front ends of the two rolling and releasing roller rotating and pressing units 7 are respectively connected with the diamond-shaped clamping holes 611 in the middle of the rear ends of the two rolling and releasing rollers 65 in a clamped mode. The winding and unwinding roller rotating and pressing unit 7 can press the rear ends of the two winding and unwinding rollers 65, so that the winding and unwinding rollers 65 are prevented from loosening backwards from the clamping prism 64, and the rotation of the winding and unwinding rollers 65 is not influenced;

the winding and unwinding roller rotating and pressing unit 7 comprises a mounting frame 71, longitudinal sliding columns 72, a threaded rod 73, a knob 74, a driven shaft 75, a pressing movable plate 76, a limiting end plate II 77 and pressing prisms 78, the mounting frame 71 is respectively fixed at the positions, located behind the two winding and unwinding rollers 65, of the rear side of the top of the filter box 91, the longitudinal sliding columns 72 are fixed in the mounting frame 71, the longitudinal threaded rod 73 is connected in the mounting frame 71 in a rotating mode, the knob 74 is connected to one end of the threaded rod 73, a threaded hole in the bottom of the pressing movable plate 76 is in threaded connection with the threaded rod 73, a sliding hole in the bottom of the pressing movable plate 76 is in sliding connection with the longitudinal sliding columns 72, the longitudinal driven shaft 75 is connected to the top of the pressing movable plate 76 in a rotating mode through a bearing, the pressing prisms 78 is fixedly connected to the front end of the driven shaft 75, the limiting end plate II 77 is arranged at the rear end of the pressing prisms 78, the two prisms 78 can be clamped into diamond-shaped clamping holes 611 at the rear ends of the two winding and unwinding rollers 65, the rear end of the winding and unwinding roller 65 is pressed tightly, and meanwhile, the winding and unwinding roller 65 is prevented from being clamped with the clamping prism 64;

when the replaceable filter cloth 56 on the winding-unwinding roller 65 for releasing the replaceable filter cloth 56 is used up, the knob 74 is twisted to drive the threaded rod 73 to rotate, the pressing movable plate 76 moves backwards along the longitudinal sliding column 72 due to the threaded action of the threaded rod 73 and the pressing movable plate 76, the winding-unwinding roller 65 can be taken off, then the winding-unwinding roller 65 wound with the replaceable filter cloth 56 is replaced, then the end of a new replaceable filter cloth 56 is sewn with the end of the replaceable filter cloth 56 in use, then the pressing prism 78 is pressed again to the winding-unwinding roller 65 wound with the replaceable filter cloth 56, and the other winding-unwinding roller 65 wound with the used replaceable filter cloth 56 can also be replaced according to the mode.

In a fourth embodiment, referring to fig. 2 and 5, the present embodiment provides a technical solution: the embodiment of the village and town sewage treatment device has the same structure as the three embodiments, and is characterized in that:

still include outer wall scraping unit 8, outer wall scraping unit 8 includes connecting axle 81, side cover 82, connecting block one 83, hold-down spring 84, connecting block two 85, L shape pole 86, scraper blade 87 and rotation power component, the middle part of preceding case lid 95 is connected with connecting axle 81 through sealed bearing rotation, the one end that connecting axle 81 is located the outside of preceding case lid 95 is connected and is rotated power component, the one end that connecting axle 81 is located filter box 91 is connected with the side cover 82 of perpendicular to connecting axle 81 axis, the one end sliding connection of side cover 82 and L shape pole 86, the tip of side cover 82 is equipped with connecting block one 83, the middle part of L shape pole 86 is equipped with connecting block two 85, connecting block two 85 and connecting block one 83 pass through hold-down spring 84 and connect, scraper blade 87 is connected to the other end of L shape pole 86, scraper blade 87 and the outside sliding connection of outer filter cylinder 52.

The power assembly is rotated to drive the connecting shaft 81 to rotate, so that the lateral square sleeve 82 is driven to rotate, the L-shaped rod 86 always tends to move towards the connecting shaft 81 under the action of the compression spring 84, the scraper 87 is in close contact with the outer wall of the outer filter cylinder 52, filter residues filtered outside the outer filter cylinder 52 can be effectively scraped, the filter residues fall down, and the probability of blockage of the outer filter cylinder 52 is reduced.

The rotating power assembly comprises a scraping motor 88, a driving gear 89 and a driven gear 810, the connecting shaft 81 is located at one end of the outer side of the front box cover 95 and is connected with the driven gear 810, the scraping motor 88 is fixed on the outer side of the front box cover 95, an output shaft of the scraping motor 88 is connected with the driving gear 89, the driving gear 89 is meshed with the driven gear 810 and is connected with the driven gear 810, the scraping motor 88 outputs torque, the connecting shaft 81 is driven to rotate after the speed of the driven gear 810 is changed through the driving gear 89, and due to the interference of the sealing rubber block 55, the scraping motor 88 needs to rotate positively and negatively to enable the scraping plate 87 to completely scrape off filter residues on the outer side of the outer filter cylinder 52.

In the fifth embodiment, referring to fig. 1, the present embodiment provides a technical solution: the village and town sewage treatment device has the same structure as the fourth embodiment, and is characterized in that:

the device also comprises an exhaust deodorization unit 4, wherein the exhaust deodorization unit 4 is arranged at a discharge port at the top of the aerobic tank 1 and can filter off odor discharged from the discharge port at the top of the aerobic tank 1;

the exhaust deodorization unit 4 comprises a fixed sleeve 41, a second bolt 42, a frustum gas-collecting hood 43, an exhaust passage 44, an activated carbon adsorption plate 45, a support column 46 and a baffle plate 47, wherein the fixed sleeve 41 is sleeved at the top of the aerobic tank 1, the fixed sleeve 41 is fixedly connected with the top of the aerobic tank 1 through the second bolt 42, the top of the fixed sleeve 41 is connected with the bottom end of the frustum gas-collecting hood 43, the exhaust passage 44 is connected with the top end of the frustum gas-collecting hood 43, the activated carbon adsorption plate 45 is arranged in the exhaust passage 44, four corners of the top of the exhaust passage 44 are connected with the baffle plate 47 through the support column 46, air overflowing from the aerobic tank 1 enters the exhaust passage 44 through the frustum gas-collecting hood 43, odor in the overflowed air is adsorbed and removed through the activated carbon adsorption plate 45 in the exhaust passage 44, and the baffle plate 47 can shield the upper part of the exhaust passage 44 to prevent impurities from falling into the exhaust passage 44.

In a sixth embodiment, referring to fig. 2, the present embodiment provides a technical solution: a village and town sewage treatment device, which is further described in the first embodiment;

the sewage transfer assembly 10 comprises a bottom pipe 101, a liquid pump 102, a transfer pipe 103 and a water receiving pipe 104, one side of the bottom of the aerobic pool 1 is connected with one end of the bottom pipe 101, the other end of the bottom pipe 101 is connected with an inlet of the liquid pump 102, an outlet of the liquid pump 102 is connected with one end of the transfer pipe 103, the other end of the transfer pipe 103 is connected with one end of the water receiving pipe 104, the other end of the water receiving pipe 104 penetrates through the side surface of the bottom of the front box cover 95 to extend into the filter box 91, and sewage in the aerobic pool 1 can be pumped into the filter box 91 through the liquid pump 102.

It should be noted that the input terminals of the liquid pump 102, the electromagnetic valve 23, the scraping motor 88 and the winding-unwinding motor 68 disclosed in the above embodiments are electrically connected to the output terminal of the external power supply through an external PLC controller, the scraping motor 88 and the winding-unwinding motor 68 both use servo motors, and the external PLC controller controls the liquid pump 102, the electromagnetic valve 23, the scraping motor 88 and the winding-unwinding motor 68 to operate by a method commonly used in the prior art.

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

Claims (10)

1. A villages and small towns sewage treatment plant, includes good oxygen pond (1), its characterized in that still includes:

the uniform aeration unit (2) comprises a three-way joint (21), two air inlet pipes (22) and an air outlet pipe buffering and limiting assembly, wherein the front end of the bottom of the aerobic tank (1) is provided with the two air inlet pipes (22) in a penetrating way, the two air inlet pipes (22) are respectively connected with an electromagnetic valve (23) in series, one ends of the two air inlet pipes (22) outside the aerobic tank (1) are respectively connected with two outlets of the three-way joint (21), one ends of the two air inlet pipes (22) in the aerobic tank (1) are respectively connected with one end of two hoses (24), the front end and the rear end of the bottom in the aerobic tank (1) are provided with two shaft seats (25), the two shaft seats (25) are rotatably connected with a longitudinal rotating shaft (26), two arched air outlet pipes (27) are symmetrically arranged on two sides of the rotating shaft (26), and aeration heads (28) are respectively arranged on the tops of the two arched air outlet pipes (27) at equal intervals, the other ends of the two hoses (24) are respectively connected with two arched air outlet pipes (27), the bottom in the aerobic tank (1) is provided with two air pipe buffering and limiting assemblies, and the two air pipe buffering and limiting assemblies are respectively positioned below the middle parts of the two arched air outlet pipes (27);

and the air attachment unit (3) is arranged in the middle of the aerobic tank (1).

2. The village and town sewage treatment plant according to claim 1, wherein: air adheres to unit (3) and includes fixed subassembly, spacing otter board (33) and air and adheres to ball (34), the middle part is through two fixed subassembly fixedly connected with spacing otter board (33) in aerobic tank (1), forms between two spacing otter board (33) and adheres to the ball chamber, it has air to adhere to ball (34) to adhere to the ball intracavity packing, air adheres to and has evenly seted up the air on ball (34) and adheres to the hole.

3. The village and town sewage treatment plant according to claim 1, wherein: still include filter container unit (9), filter container unit (9) include rose box (91) and filter residue deposit discharge subassembly, the installing port of rose box (91) front end is fixed with preceding case lid (95) through six (96) bolts, the one end that sewage shifted subassembly (10) is connected to bottom one side in good oxygen pond (1), the bottom side of case lid (95) before the other end of sewage shifted subassembly (10) is connected, the bottom through groove connection of rose box (91) has the filter residue deposit discharge subassembly.

4. The village and town sewage treatment plant according to claim 3, characterized in that: filter residue deposit discharge assembly includes frustum filter residue collecting box (92), swash plate (97) and V-arrangement board (98), the top of frustum filter residue collecting box (92) is connected to the bottom through groove of rose box (91), the four corners of five (94) fixed connection bottom (93) of bolt is passed through in the bottom discharge port four corners of frustum filter residue collecting box (92), both sides are equipped with swash plate (97) respectively in frustum filter residue collecting box (92), one side horizontal position that middle part was less than the horizontal position of opposite side in swash plate (97) were close to frustum filter residue collecting box (92), the position that lies in between two swash plates (97) in frustum filter residue collecting box (92) is equipped with V-arrangement board (98).

5. The village and town sewage treatment plant according to claim 3, characterized in that: the sewage filter unit comprises a mesh inner cylinder (51), an outer filter cylinder (52) and a replaceable filter cloth (56), wherein a drain pipe (511) penetrates through the middle part of the front end of a filter box (91), the middle part in the filter box (91) is provided with the longitudinal mesh inner cylinder (51), the outer filter cylinder (52) is arranged on the outer side of the mesh inner cylinder (51), an annular gap is reserved between the mesh inner cylinder (51) and the outer filter cylinder (52), the front end of the mesh inner cylinder (51) is in sealing connection with the front end of the outer filter cylinder (52), the front end of the outer filter cylinder (52) is connected with a front cover (59) through a bolt four (510), the end part of the drain pipe (511) penetrates through a through hole in the middle part of the front cover (59) and extends to the middle part in the mesh inner cylinder (51), a rectangular notch is formed in the top of the outer part of the outer filter cylinder (52), and a stop rod (53) is arranged at the position, in the middle part of the rectangular notch, on the outer side of the mesh inner cylinder (51), the both sides of pin (53) joint respectively have joint rectangle frame (54), it has sealed gluey piece (55) to inlay in the top rectangle mounting hole of rose box (91), the bottom of sealed gluey piece (55) supports the rectangle breach of straining a section of thick bamboo (52) top outward, be equipped with removable filter cloth (56) in the annular gap, two rectangle through-holes on two joint rectangle frames (54) and sealed gluey piece (55) are passed in proper order at the both ends of removable filter cloth (56) and extend to the upside of rose box (91), the rear end of straining a section of thick bamboo (52) outward is connected with back lid (57) through three (58) of bolt.

6. The village and town sewage treatment plant according to claim 5, wherein: still put change unit (6) including the filter cloth book, the filter cloth book is put change unit (6) and is included to roll up and put roller (65) and synchronous rotating assembly, the top front side of rose box (91) is located the position of sealed gluey piece (55) front side and is equipped with support (61), it is connected with two fore-and-aft axis of rotation (62) to rotate on support (61), and two joint prism (64) are connected respectively to the rear end of two axis of rotation (62), and the rear end of two joint prisms (64) is respectively with two rhombus card hole (611) joints of rolling up roll-off roller (65) front end middle part, and two rolls up the both sides of putting roller (65) fixed winding removable filter cloth (56) respectively, and synchronous rotating assembly is connected to the front end of two axis of rotation (62).

7. The village and town sewage treatment plant according to claim 6, wherein: the rolling device is characterized by further comprising a rolling and releasing roller rotating and pressing unit (7), wherein the top rear side of the filter box (91) is positioned at the position behind two rolling and releasing rollers (65) and is provided with two rolling and releasing roller rotating and pressing units (7), and the pressing prisms (78) at the front ends of the two rolling and releasing roller rotating and pressing units (7) are respectively connected with the diamond-shaped clamping holes (611) in the middle of the rear ends of the two rolling and releasing rollers (65).

8. The village and town sewage treatment plant according to claim 5, wherein: still include outer wall and scrape unit (8), outer wall is scraped unit (8) and is included connecting axle (81), L shape pole (86), scraper blade (87) and rotates power component, the middle part of preceding case lid (95) is rotated through sealed bearing and is connected with connecting axle (81), the outer one end connection rotation power component of connecting axle (81) position in preceding case lid (95), the one end that connecting axle (81) is located rose box (91) is connected with side square cover (82) perpendicular to connecting axle (81) axis, side square cover (82) and the one end sliding connection of L shape pole (86), the tip of side square cover (82) is equipped with connecting block one (83), the middle part of L shape pole (86) is equipped with connecting block two (85), connecting block two (85) and connecting block one (83) are connected through pressure spring (84), scraper blade (87) is connected to the other end of L shape pole (86), the scraper (87) is connected with the outer side of the outer filter cylinder (52) in a sliding way.

9. The village and town sewage treatment plant according to claim 1, wherein: the device also comprises an exhaust deodorization unit (4), wherein the exhaust deodorization unit (4) is installed at a discharge port at the top of the aerobic pool (1).

10. The treatment process of the village and town sewage treatment plant according to any one of claims 1-9, characterized in that: the method comprises the following steps:

the method comprises the following steps: an air inlet of the three-way joint (21) is connected with an external air pump, the external air pump pumps air into the arched air outlet pipe (27) through an air inlet pipe (22) and a hose (24), and the air is emitted from the aeration head (28) to enrich the aerobic tank (1);

step two: the left electromagnetic valve (23) and the right electromagnetic valve (23) are opened and closed alternately, the left arched air outlet pipe (27) and the right arched air outlet pipe (27) move up and down alternately by utilizing the recoil force of the air outlet of the aeration head (28), so that the orientation of the aeration head (28) on the arched air outlet pipe (27) is changed continuously, and the aeration range is expanded;

step three: when the gas passes through the air attachment unit (3), the gas is attached to the air attachment balls (34), so that the contact time with the sewage in the aerobic tank (1) is prolonged, and the aerobic reaction in the aerobic tank (1) is fully performed;

step four: the gas is discharged from an exhaust deodorization unit (4) at the top of the aerobic pool (1), and the odor carried in the gas is absorbed and filtered by the exhaust deodorization unit (4);

step five: the water treated in the aerobic tank (1) is transferred into a filter box (91) through a sewage transfer component (10), filtered through an outer filter cylinder (52) and a replaceable filter cloth (56) and then discharged through a drain pipe (511);

step six: when more filter residues are blocked at the outer side of the outer filter cylinder (52), the outer wall scraping unit (8) is used for scraping the filter residues, and the filter residues fall into the filter residue deposition and discharge assembly for temporary storage;

step seven: after the partial filtering effect of the replaceable filter cloth (56) in the annular gap is changed, the synchronous rotating assembly in the filter cloth rolling and releasing replacing unit (6) is used for driving the two rolling and releasing rollers (65) to rotate in the same direction, one rolling and releasing roller (65) releases the replaceable filter cloth (56), and the other rolling and releasing replaceable filter cloth (56) changes the using position of the replaceable filter cloth (56).

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