CN114835341B - 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, relating to the technical field of village and town sewage treatment, comprising an aerobic tank and a uniform aeration unit, the uniform aeration unit includes a three-way joint, an arched air outlet pipe, an aeration head and an outlet The trachea buffer limit assembly, the bottom front end of the aerobic pool is provided with two air intake pipes, the two air intake pipes are respectively connected with solenoid valves in series, and the ends of the two air intake pipes located outside the aerobic pool are respectively connected to three-way joints The two outlets of the two inlet pipes are located in the aerobic tank, and one end of the two hoses is respectively connected to one end of the two hoses. There are two shaft seats at the front and rear ends of the bottom of the aerobic tank; the aeration coverage is large, improving the aerobic tank. The aerobic reaction is beneficial for aerobic bacteria to decompose the organic matter in the sewage and avoid affecting the quality of the surrounding air. The filter material can be replaced conveniently and quickly during filtration, realizing non-stop replacement, reducing the time wasted in replacing the filter material, and improving the quality of the filter material. Efficiency of sewage filtration.

Description

A 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 treatment process.

Background technique

At present, with the increase of population and the acceleration of urbanization, residential pollution will gradually replace industrial pollution as the No. It has been neglected for a long time, and the pollution of domestic water in villages and towns has become more serious. With the continuous advancement of new villages and towns, the problem of water pollution in villages and towns has become increasingly prominent;

In order to solve the above problems, the Chinese utility model patent with the authorized announcement number CN207608466U discloses a village and town sewage treatment device, including anaerobic pond, aerobic pond, sedimentation pond, filter material, adsorption filler, sludge concentration pond, and village and town sewage treatment The relative position of the water inlet of the device and the sludge return outlet is set. The aeration pipeline at the bottom of the aerobic tank has flow holes. diffuser cap;

Although this patent solves the increasingly prominent problem of water pollution in villages and towns, it still has the following defects: 1. The area covered by the aeration device in the aerobic pool is limited, and the time for the gas to remain in the aerobic pool is short, resulting in aerobic The oxygen content in the pool has not reached the ideal state, and the aerobic reaction efficiency in the aerobic pool is low; 2. The odor in the sewage will be released during aeration, which will affect the surrounding air quality; 3. The filter material will be quickly blocked when the sewage is filtered If it fails, it will waste time to replace the filter material and affect the sewage filtration efficiency.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the existing defects and provide a village and town sewage treatment device and treatment process. The aeration coverage is large, and the gas can be left in the aerobic tank for a long time to ensure that the oxygen in the aerobic tank The content is in the ideal range, improving the aerobic reaction in the aerobic pool, which is conducive to the decomposition of organic matter in the sewage by aerobic bacteria, and at the same time can filter the odor emitted by aeration to avoid affecting the quality of the surrounding air. The filter material can The replacement is convenient and quick, realizes non-stop replacement, reduces the time wasted in replacing filter materials, can improve the efficiency of sewage filtration, and can effectively solve the problems in the background technology.

In order to achieve the above object, the present invention provides the following technical solutions: a village sewage treatment device, including an aerobic pool, also includes:

The uniform aeration unit includes a tee joint, an air intake pipe, a solenoid valve, a hose, a shaft seat, a rotating shaft, an arched air outlet pipe, an aeration head, and an air outlet pipe buffer limit assembly. There are two air intake pipes, and solenoid valves are connected in series on the two air intake pipes. The ends of the two air intake pipes located outside the aerobic tank are respectively connected to the two outlets of the tee joint, and the ends of the two air intake pipes located in the aerobic pool are respectively Connect one end of the two hoses. There are two shaft seats at the front and rear ends of the inner bottom of the aerobic pool. The two shaft seats are rotated and connected to the longitudinal rotating shaft. Two arched air outlet pipes are symmetrically arranged on both sides of the rotating shaft. , the tops of the two arched air outlet pipes are equidistantly provided with aeration heads, the other ends of the two hoses are respectively connected to two arched air outlet pipes, and the inner bottom of the aerobic tank is provided with two air pipe buffer limit assemblies , the two trachea buffer limit components are respectively located under the middle of the two arched trachea outlets;

The air attachment unit is installed in the middle of the aerobic pool.

The inlet of the three-way joint is connected to the external air pump, and the air is pumped into the three-way joint through the external air pump. The air enters the arched air outlet pipe through two inlet pipes and hoses, and then sprays through the aerator head on the arched air outlet pipe. Into the sewage in the aerobic tank, use an external controller to close one solenoid valve and open the other solenoid valve. At this time, the recoil force of the air ejected from the aerator head can make the rotating shaft rotate relative to the shaft seat. At this time, the arched The angle of the trachea changes, and the direction of the aeration head changes, which can expand the aeration range, so that the sewage in the aerobic tank can fully undergo aerobic reaction, and stop when the descending arched air outlet pipe touches the buffer limit assembly of the air outlet pipe , to prevent the arched air outlet pipe from bumping into the bottom of the aerobic tank, and then the external controller switches the switches of the two solenoid valves, and the rotating shaft rotates in the opposite direction, so that the other arched air outlet pipe stops when it touches the buffer limit assembly of the air outlet pipe, and in turn The up and down alternate movement of the two arched air outlet pipes and the constant change of the direction of the aeration head improve the aeration effect, make the sewage in the aerobic tank fully contact with oxygen, and the air attachment unit can attach air, so that the air attachment unit can stay in good condition for a long time In the sewage of the oxygen pool, the aerobic reaction can be fully carried out.

Further, the air attachment unit includes a fixing component, a limiting net plate and an air attachment ball, and the middle part of the aerobic pool is fixedly connected with two limiting net plates through two fixing components, between the two limiting net plates An attachment ball cavity is formed between them, the attachment ball cavity is filled with air attachment balls, and air attachment holes are evenly opened on the air attachment balls.

The fixed component is used for detachable installation of the limit screen. The two limit screens limit a large number of air attachment balls to prevent the air attachment ball from floating on the top of the sewage in the aerobic pool. The air attachment ball is made of sponge balls, which is good for absorbing air bubbles , so that the air and sewage contact for a long time.

Further, it also includes a filter container unit, the filter container unit includes a filter box, a filter residue deposition discharge assembly, a front box cover and bolts six, the installation port at the front end of the filter box is fixed with a front box cover by bolts six, the One side of the bottom of the aerobic tank is connected to one end of the sewage transfer assembly, the other end of the sewage transfer assembly is connected to the bottom side of the front box cover, and the filter residue deposition discharge assembly is connected to the bottom through groove of the filter box.

The sewage transfer component transfers the sewage from the aerobic tank to the filter box. The filter residue deposition and discharge component at the bottom of the filter box can collect the filtered filter residue to prevent the filter residue from moving freely in the aerobic tank and blocking the filter material. The front cover is convenient to open the filter box the installation port;

Further, the filter residue deposition and discharge assembly includes a frustum filter residue collection box, a bottom cover, a bolt five, a sloping plate and an inverted V-shaped plate, and the bottom through groove of the filter box is connected to the top of the frustum filter residue collection box. The four corners of the bottom discharge port of the frustum filter residue collection box are fixedly connected to the four corners of the bottom cover by bolts 5, and both sides of the frustum filter residue collection box are respectively provided with slanting plates, and the sloping plates are close to a middle part of the frustum filter residue collection box. The horizontal position of one side is lower than the horizontal position of the other side, and an inverted V-shaped plate is provided at the position between the two inclined plates in the frustum filter residue collection box.

The filtered residue can fall into the frustum filter residue collection box with the gravity, and slide down to the bottom of the cone frustum filter residue collection box along the slope of the inclined plate and the inverted V-shaped plate. The flow of the water is churning again. After more filter residues are collected in the frustum filter residue collection box, the bottom cover can be opened to discharge the filter residue. Due to the collection capacity of the cone frustum filter residue collection box, the frequency of opening the bottom cover can be reduced and the filtration efficiency can be improved. ;

Further, it also includes a sewage filter unit, which includes a mesh inner cylinder, an outer filter cylinder, a retaining rod, a clamping rectangular frame, a sealant block, a replaceable filter cloth, a rear cover, three bolts, and a front cover , four bolts and a drainage pipe, the middle part of the front end of the filter box is provided with a drainage pipe, the middle part of the filter box is provided with a longitudinal mesh inner cylinder, and the outer side of the mesh inner cylinder is provided with an outer filter cartridge, so There is an annular gap between the mesh inner cylinder and the outer filter cylinder, and the front ends of the mesh inner cylinder and the outer filter cylinder are sealed and connected. The end part passes through the through hole in the middle of the front cover and extends to the inner middle of the mesh inner cylinder, the top of the outer filter cartridge is provided with a rectangular gap, and the outside of the mesh inner cylinder is provided with a stop bar at the middle of the rectangular gap, The two sides of the retaining rod are respectively clamped with clamped rectangular frames, and the top rectangular installation opening of the filter box is inlaid with a sealant block, and the bottom of the sealant block is against the rectangular gap on the top of the outer filter cartridge. There is a replaceable filter cloth in the annular gap, and the two ends of the replaceable filter cloth pass through the two rectangular through holes on the two clamping rectangular frames and the sealant block in turn and extend to the upper side of the filter box. The rear end of the outer filter cartridge is connected with a rear cover by three bolts.

Sewage first enters the filter box, then passes through the outer filter cylinder, replaceable filter cloth and mesh inner cylinder in sequence, and then enters the mesh inner cylinder, and then discharges the filtered water through the drain pipe, snaps the rectangular frame and seals The rubber blocks limit the end of the replaceable filter cloth, pull one end of the replaceable filter cloth, the other end of the replaceable filter cloth will gradually enter into the annular gap, and the filter position of the replaceable filter cloth can be changed, and the replaceable filter cloth Cloth is the main filter material, which is convenient to replace the replaceable filter cloth without stopping the work, improves the filtration efficiency of sewage, and can quickly solve the problem of replacing the replaceable filter cloth after excessive use.

Further, it also includes a filter cloth rolling and replacing unit, which includes a bracket, a rotating shaft, a clamping prism, a rolling and unwinding roller, a diamond-shaped clamping hole and a synchronous rotating assembly. The top front of the filter box The side is located at the front side of the sealant block, and a bracket is provided. Two longitudinal rotation shafts are rotatably connected to the bracket, and the rear ends of the two rotation shafts are respectively connected to two clamping prisms. They are respectively clamped with the diamond-shaped clamping holes in the middle of the front ends of the two winding and unwinding rollers, and the front ends of the two rotating shafts are connected with a synchronous rotating assembly.

The synchronous rotation assembly can drive the two rotating shafts to rotate in the same direction relative to the bracket, and the two clamping prisms are respectively clamped and installed with two unwinding rollers. When the two unwinding rollers rotate in the same direction, one of the unwinding rollers releases its own winding. Replace the filter cloth, and another unwinding roller winds up the used replaceable filter cloth to complete the replacement of the filter position of the replaceable filter cloth;

Further, it also includes a rolling and unwinding roller rotating and pressing unit. The top rear side of the filter box is located at the position behind the two winding and unwinding rollers. Two rolling and unwinding roller rotating and pressing units are respectively installed. The pressing prism at the front end of the tightening unit is engaged with the diamond-shaped clamping holes in the middle of the rear end of the two winding and unwinding rollers respectively. The rotation and pressing unit of the unwinding roller can compress the rear ends of the two unwinding rollers to prevent the unwinding roller from loosening backward from the clamping prism without affecting the rotation of the unwinding roller;

Further, it also includes an outer wall scraping unit, the outer wall scraping unit includes a connecting shaft, a side sleeve, a connecting block 1, a compression spring, a connecting block 2, an L-shaped rod, a scraper and a rotating power assembly, the The middle part of the front box cover is rotatably connected with a connecting shaft through a sealed bearing. One end of the connecting shaft located outside the front box cover is connected to the rotating power assembly. sleeve, the side sleeve is slidingly connected to one end of the L-shaped rod, the end of the side sleeve is provided with a connecting block 1, and the middle part of the L-shaped rod is provided with a connecting block 2, and the connecting block 2 and the connecting block Block one is connected through a compression spring, and the other end of the L-shaped rod is connected to a scraper, and the scraper is slidably connected to the outside of the outer filter cartridge.

The rotating power assembly drives the connecting shaft to rotate, thereby driving the side sleeve to rotate. Due to the action of the compression spring, the L-shaped rod always has a tendency to move towards the connecting shaft, so that the scraper is in close contact with the outer wall of the outer filter cartridge. It can effectively scrape off the filter residue filtered on the outside of the outer filter cartridge, make the filter residue fall down, and reduce the probability of the outer filter cartridge being blocked.

Further, it also includes an exhaust deodorization unit, the top discharge port of the aerobic pool is equipped with an exhaust deodorization unit, which can filter out the odor discharged from the top discharge port of the aerobic pool.

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

Step 1: Connect the air inlet of the three-way joint to the external air pump, and the external air pump pumps air into the arched air outlet pipe through the air inlet pipe and hose, and the gas emerges from the aerator head to enrich the aerobic pool;

Step 2: The left and right solenoid valves are opened and closed alternately, and the left and right arched air outlet pipes are moved up and down alternately by using the recoil force of the air outlet of the aerator head, so that the orientation of the aerator head on the arched air outlet pipe is continuously changed to expand the aeration range ;

Step 3: When the gas passes through the air attachment unit, it attaches to the air attachment ball, and the contact time with the sewage in the aerobic pool increases, so that the aerobic reaction in the aerobic pool is fully carried out;

Step 4: The gas is discharged from the exhaust deodorization unit on the top of the aerobic pool, and the odor brought out of the gas is absorbed and filtered by the exhaust deodorization unit;

Step 5: Transfer the treated water in the aerobic tank to the filter box through the sewage transfer component, filter through the outer filter cartridge and replaceable filter cloth, and then be discharged by the drain pipe;

Step 6: When the outside of the outer filter cartridge is clogged with a lot of filter residue, use the outer wall scraping unit to scrape off the filter residue, and the filter residue will fall into the filter residue deposition and discharge component for temporary storage;

Step 7: After the partial filtering effect of the replaceable filter cloth in the annular gap becomes poor, use the synchronous rotation assembly in the filter cloth unwinding replacement unit to drive the two unwinding rollers to rotate in the same direction, and one unwinding roller releases the replaceable filter cloth , and the other rolls up the replaceable filter cloth to change the use position of the replaceable filter cloth.

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

1. The inlet of the three-way joint is connected to an external air pump, and air is pumped into the three-way joint through the external air pump. The air enters the arched air outlet pipe through two inlet pipes and hoses, and then passes through the aeration on the arched air outlet pipe. The aerator head is sprayed into the sewage in the aerobic tank, and an external controller is used to close one solenoid valve and open the other solenoid valve. At this time, the recoil force of the air ejected from the aerator head can make the rotating shaft rotate relative to the shaft seat. At this time, the arch The angle of the trachea is changed, and the direction of the aeration head is changed, which can expand the range of aeration, so that the sewage in the aerobic tank can fully undergo aerobic reaction;

2. The external controller switches the switches of the two solenoid valves, and the rotating shaft rotates in the opposite direction, so that the other arched air outlet pipe stops when it touches the buffer limit assembly of the air outlet pipe, and the two arched air outlet pipes move up and down alternately and expose The direction of the air head is constantly changing to improve the aeration effect, so that the sewage in the aerobic tank is fully in contact with oxygen, and the air attachment unit can attach air, so that the air attachment unit stays in the sewage in the aerobic tank for a long time, so that the aerobic reaction can be fully carried out ;

3. Sewage first enters the filter box, then passes through the outer filter cylinder, replaceable filter cloth and mesh inner cylinder in turn, and then enters the mesh inner cylinder, and then discharges the filtered water through the drain pipe, and snaps into the rectangular frame and the sealant block to limit the end of the replaceable filter cloth, pull one end of the replaceable filter cloth, the other end of the replaceable filter cloth will gradually enter the annular gap, and the filter position of the replaceable filter cloth can be changed. Replace the filter cloth as the main filter material, which is convenient to replace the replaceable filter cloth without stopping the work, improves the filtration efficiency of sewage, and can quickly solve the problem of replacing the replaceable filter cloth after excessive use;

4. The aeration coverage is large, and the gas can be left in the aerobic tank for a long time to ensure that the oxygen content in the aerobic tank is in the ideal range, improve the aerobic reaction in the aerobic tank, and facilitate the aerobic bacteria to treat the organic matter in the sewage Decomposition, and at the same time, it can filter the odor emitted by aeration to avoid affecting the quality of the surrounding air. The filter material can be replaced conveniently and quickly during filtration, which can realize non-stop replacement, reduce the time wasted in replacing the filter material, and improve the quality of sewage. Filtration efficiency.

Description of drawings

Fig. 1 is the structural representation of village and town sewage treatment device of the present invention;

Fig. 2 is the schematic diagram of the cross-sectional structure of the aerobic pool under the rear view state of the village and town sewage treatment device of the present invention;

Fig. 3 is a schematic diagram of a partially enlarged structure at A in Fig. 2 of the village and town sewage treatment device of the present invention;

Fig. 4 is a schematic diagram of a partially enlarged structure at B in Fig. 2 of the village and town sewage treatment device of the present invention;

5 is a schematic diagram of the rear internal structure of the filter box of the village sewage treatment device of the present invention;

Fig. 6 is a schematic diagram of the local structure of the sewage filtering unit of the village sewage treatment device of the present invention;

Fig. 7 is a schematic diagram of a partially enlarged structure at C in Fig. 6 of the village and town sewage treatment device of the present invention;

Fig. 8 is a partial cross-sectional structural schematic diagram of the filter container unit of the village sewage treatment device of the present invention;

Fig. 9 is a schematic diagram of the internal structure of the front side of the filter box of the village sewage treatment device of the present invention;

Fig. 10 is a schematic diagram of the front internal partial structure of the filter box of the village sewage treatment device of the present invention.

In the figure: 1 aerobic tank, 2 uniform aeration unit, 21 tee joint, 22 intake pipe, 23 solenoid valve, 24 hose, 25 shaft seat, 26 rotating shaft, 27 arched air outlet pipe, 28 aeration head, 29 Telescopic rod, 210 buffer spring, 211 limit plate, 212 cushion sleeve, 3 air attachment unit, 31 installation frame, 32 bolt one, 33 limit mesh plate, 34 air attachment ball, 4 exhaust deodorization unit, 41 fixed Set, 42 Bolt 2, 43 Cone gas collecting hood, 44 Exhaust channel, 45 Activated carbon adsorption plate, 46 Pillar, 47 Baffle plate, 5 Sewage filter unit, 51 Mesh inner cylinder, 52 Outer filter cartridge, 53 Baffle rod, 54 Clamped rectangular frame, 55 Sealant block, 56 Replaceable filter cloth, 57 Rear cover, 58 Bolt 3, 59 Front cover, 510 Bolt 4, 511 Drain pipe, 6 Filter cloth rolling replacement unit, 61 Bracket, 62 Rotation Shaft, 63 limit end plate 1, 64 clamping prism, 65 roll unwinding roller, 66 limit ring, 67 motor seat, 68 roll discharge motor, 69 pulley, 610 synchronous belt, 611 rhombus card hole, 7 roll unwinding roller rotation Compression unit, 71 mounting frame, 72 vertical sliding column, 73 threaded rod, 74 knob, 75 driven shaft, 76 compression movable plate, 77 limit end plate 2, 78 compression prism, 8 outer wall scraping unit, 81 Connecting shaft, 82 side square sleeve, 83 connecting block 1, 84 compression spring, 85 connecting block 2, 86 L-shaped rod, 87 scraper, 88 scraping motor, 89 driving gear, 810 driven gear, 9 filter container unit, 91 filter box, 92 conical filter residue collection box, 93 bottom cover, 94 bolt five, 95 front box cover, 96 bolt six, 97 inclined plate, 98 inverted V-shaped plate, 10 sewage transfer assembly, 101 bottom pipe, 102 liquid pump , 103 transfer pipes, 104 water pipes.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Embodiment 1, please refer to Figures 1-10, this embodiment provides a technical solution: a village and town sewage treatment device, including an aerobic pool 1, the top side of the aerobic pool 1 can be connected to a water inlet, and poured into the water from the water inlet Sewage, also includes:

The uniform aeration unit 2 includes a tee joint 21, an air intake pipe 22, a solenoid valve 23, a hose 24, a shaft seat 25, a rotating shaft 26, an arched air outlet pipe 27, an aeration head 28, and an air outlet pipe buffer limit assembly. The front end of the bottom of the oxygen tank 1 is penetrated with two air intake pipes 22, and the two air intake pipes 22 are respectively connected with solenoid valves 23 in series. Two outlets, two air intake pipes 22 are positioned at one end in the aerobic tank 1 and are respectively connected to one end of the two flexible pipes 24, and the front and rear ends of the inner bottom of the aerobic tank 1 are provided with two shaft seats 25, which rotate between the two shaft seats 25. Connected to the vertical shaft 26, two arched air outlet pipes 27 are arranged symmetrically on both sides of the rotating shaft 26, and the tops of the two arched air outlet pipes 27 are respectively equidistantly provided with aeration heads 28, and the other ends of the two hoses 24 The two arched air outlet pipes 27 are respectively connected, and the inner bottom of the aerobic pool 1 is provided with two trachea buffer limit assemblies, and the two air pipe buffer limit assemblies are respectively located below the middle of the two arched air outlet pipes 27;

The air outlet pipe buffer limit assembly includes a telescopic rod 29, a buffer spring 210, a limit plate 211, and a cushioning cover 212. The bottom of the aerobic pool 1 is provided with two telescopic rods 29, and the tops of the two telescopic rods 29 are respectively fixed and limited. Position plate 211, the upper side of limit plate 211 is sleeved with cushioning sleeve 212, and cushioning sleeve 212 adopts a rubber sleeve, and telescoping rod 29 is sleeved with cushioning spring 210, which touches first when the arched air outlet pipe 27 tilts downward. Touch the cushioning sleeve 212, reduce the knock on the limit plate 211, use the buffer spring 210 to achieve buffering when the telescopic rod 29 is shortened, reduce the strength when the arched air outlet pipe 27 touches the cushioning sleeve 212, and avoid The arched air outlet pipe 27 is deformed and damaged by the collision;

The air attachment unit 3 is installed in the middle of the aerobic pool 1 .

The air attachment unit 3 includes a fixed component, a limit screen 33 and an air attachment ball 34. The middle part of the aerobic pool 1 is fixedly connected with two limit screens 33 through two fixed components. An attachment ball cavity is formed between them, the attachment ball cavity is filled with air attachment balls 34, and air attachment holes are evenly opened on the air attachment balls 34.

The fixing component is used for detachable installation of the limit screen 33, and the two limit screens 33 limit a large number of air attachment balls 34, preventing the air attachment balls 34 from floating on the top of the sewage in the aerobic pool 1, and the air attachment balls 34 The use of sponge balls is beneficial to absorb air bubbles and make the air and sewage contact for a long time.

The fixed assembly includes a mounting frame 31 and a bolt 32. There are two mounting frames 31 in the middle of the aerobic pool 1. There is a distance between the two mounting frames 31, and the four corners of the two mounting frames 31 are passed through the bolts 32 respectively. Fixedly connect the four corners of the two limiting screens 33, and the limiting screens 33 can be removed to facilitate placing the air attachment ball 34 in the attachment ball cavity;

The inlet of the three-way joint 21 is connected to an external air pump, and air is pumped into the three-way joint 21 through the external air pump, and the air enters the arched air outlet pipe 27 through two air intake pipes 22 and the flexible pipe 24, and then passes through the arched air outlet pipe 27 The aerator head 28 on the top is sprayed into the sewage in the aerobic tank 1, and an external controller is used to close a solenoid valve 23 and open another solenoid valve 23. At this time, the recoil force of the air ejected by the aerator head 28 can The rotating shaft 26 rotates relative to the shaft seat 25. At this time, the angle of the arched air outlet pipe 27 changes, and the orientation of the aeration head 28 changes, which can expand the aeration range, so that the sewage in the aerobic tank 1 can fully undergo aerobic reaction. The arched air outlet pipe 27 to be lowered stops when it touches the buffer limit assembly of the air outlet pipe, so as to prevent the arched air outlet pipe 27 from hitting the inner bottom of the aerobic pool 1, and then the external controller switches the switches of the two solenoid valves 23, and the rotating shaft 26 Reverse rotation, so that the other arched air outlet pipe 27 stops when it touches the buffer limit assembly of the air outlet pipe, and the two arched air outlet pipes 27 move up and down alternately and the orientation of the aeration head 28 changes continuously to improve the aeration effect. Make the sewage in the aerobic pool 1 fully contact with oxygen, and the air attachment unit 3 can attach air, so that the air attachment unit 3 stays in the sewage in the aerobic pool for a long time, so that the aerobic reaction is fully carried out.

Also include filter container unit 9, filter container unit 9 includes filter box 91, filter residue deposition discharge assembly, front box cover 95 and bolt six 96, the installation port of filter box 91 front end is fixed with front box cover 95 by bolt six 96, good One side of the bottom of the oxygen tank 1 is connected to one end of the sewage transfer assembly 10, the other end of the sewage transfer assembly 10 is connected to the bottom side of the front case cover 95, and the bottom through groove of the filter box 91 is connected with a filter residue deposition discharge assembly.

The sewage transfer assembly 10 transfers the sewage from the aerobic pool 1 to the filter box 91, and the filter residue deposition and discharge assembly at the bottom of the filter box 91 can collect the filtered filter residue to prevent the filter residue from arbitrarily moving in the aerobic pool 1 and blocking the filter material. The box cover 95 is convenient for opening the installation port of the filter box 91;

The filter residue deposition and discharge assembly includes a frustum filter residue collection box 92, a bottom cover 93, a bolt 94, an inclined plate 97 and an inverted V-shaped plate 98, and the bottom of the filter box 91 is connected to the top of the frustum filter residue collection box 92 through a groove. The four corners of the discharge outlet at the bottom of the filter residue collection box 92 are fixedly connected to the four corners of the bottom cover 93 by bolts five 94, and both sides of the frustum filter residue collection box 92 are respectively provided with slanting plates 97, and the sloping plates 97 are close to the middle part of the frustum filter residue collection box 92. The horizontal position of one side is lower than the horizontal position of the other side, and an inverted V-shaped plate 98 is provided at the position between the two inclined plates 97 in the conical frustum filter residue collection box 92 .

The filtered residue can fall in the frustum filter residue collection box 92 along with the gravity, slide down to the bottom of the frustum filter residue collection box 92 along the slope of the inclined plate 97 and the inverted V-shaped plate 98, due to the use of the inclined plate 97 and the inverted V The shaped plate 98 prevents the filter residue from churning again with the flow of water. After more filter residue is collected in the frustum filter residue collection box 92, the bottom cover 93 can be opened to discharge the filter residue. Due to the collection capacity of the frustum filter residue collection box 92, opening can be reduced. The frequency of the bottom cover 93 improves the efficiency of filtration;

It also includes a sewage filter unit 5, which includes a mesh inner cylinder 51, an outer filter cylinder 52, a retaining rod 53, a clamping rectangular frame 54, a sealant block 55, a replaceable filter cloth 56, a rear cover 57, bolts Three 58, front cover 59, bolt four 510 and drainpipe 511, the front end middle part of filter box 91 runs through and is provided with drainpipe 511, the middle part of filter box 91 is provided with longitudinal mesh inner cylinder 51, the outside of mesh inner cylinder 51 An outer filter cartridge 52 is provided, and there is an annular gap between the mesh inner cylinder 51 and the outer filter cartridge 52, and the front ends of the mesh inner cylinder 51 and the outer filter cartridge 52 are hermetically connected, and the front end of the outer filter cartridge 52 is passed through a bolt four 510 Connected with a front cover 59, the end of the drain pipe 511 passes through the through hole in the middle of the front cover 59 and extends to the inner middle of the mesh inner cylinder 51, the top of the outer filter cartridge 52 is provided with a rectangular gap, and the outside of the mesh inner cylinder 51 is located The position in the middle of the rectangular gap is provided with a retaining rod 53, and the two sides of the retaining rod 53 are clamped with a clamping rectangular frame 54 respectively, and a sealant block 55 is inlaid in the rectangular installation opening on the top of the filter box 91, and the bottom of the sealant block 55 is against the There is a rectangular gap at the top of the outer filter cartridge 52, and a replaceable filter cloth 56 is arranged in the annular gap, and the two ends of the replaceable filter cloth 56 pass through two rectangular through holes on the two clamping rectangular frames 54 and the sealant block 55 in turn And extend to the upper side of the filter box 91 , the rear end of the outer filter cartridge 52 is connected with a rear cover 57 through a bolt three 58 .

Sewage first enters the filter box 91, then is filtered through the outer filter cartridge 52, the replaceable filter cloth 56 and the mesh inner cylinder 51 in sequence, and then enters the inside of the mesh inner cylinder 51, and then the filtered water is discharged through the drain pipe 511. The end of the replaceable filter cloth 56 is limited by clamping the rectangular frame 54 and the sealant block 55. When one end of the replaceable filter cloth 56 is pulled, the other end of the replaceable filter cloth 56 will gradually enter into the annular gap, which can be changed. The filter position of the replaceable filter cloth 56, the replaceable filter cloth 56 is used as the main filter material, it is convenient to replace the replaceable filter cloth 56 in the state of non-stop operation, improve the filtration efficiency of sewage, and can quickly solve the problem of replacing the replaceable filter cloth 56 after excessive use question.

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

Step 1: Connect the air inlet of the three-way joint 21 to an external air pump, and the external air pump pumps air into the arched air outlet pipe 27 through the air intake pipe 22 and the hose 24, and the gas emerges from the aeration head 28 to make the aerobic tank 1 Enrichment within;

Step 2: The left and right electromagnetic valves 23 are alternately opened and closed, and the left and right arched air outlet pipes 27 are alternately moved up and down by using the recoil force of the air outlet of the aerator head 28, so that the orientation of the aerator head 28 on the arched air outlet pipe 27 is constantly changed , to expand the aeration range;

Step 3: When the gas passes through the air attachment unit 3, it attaches to the air attachment ball 34, and the contact time with the sewage in the aerobic pool 1 increases, so that the aerobic reaction in the aerobic pool 1 is fully carried out;

Step 4: The gas is discharged from the exhaust deodorization unit 4 at the top of the aerobic pool 1, and the odor brought out of the gas is absorbed and filtered by the exhaust deodorization unit 4;

Step 5: Transfer the treated water in the aerobic tank 1 to the filter box 91 through the sewage transfer assembly 10, filter through the outer filter cartridge 52 and the replaceable filter cloth 56, and then be discharged by the drain pipe 511;

Step 6: When the outside of the outer filter cartridge 52 is clogged with more filter residues, use the outer wall scraping unit 8 to scrape off the filter residues, and the filter residues fall into the filter residue deposition and discharge assembly for temporary storage;

Step 7: After the partial filtering effect of the replaceable filter cloth 56 in the annular gap becomes worse, use the synchronous rotation assembly in the filter cloth unwinding replacement unit 6 to drive the two unwinding rollers 65 to rotate in the same direction, and one unwinding roller 65 is released The filter cloth 56 can be replaced, and the other can be rolled up to change the use position of the filter cloth 56 .

Embodiment 2, please refer to Fig. 2-3. This embodiment provides a technical solution: a village and town sewage treatment device. This embodiment has roughly the same structure as Embodiment 1, except that:

It also includes a filter cloth rolling and replacing unit 6, which includes a bracket 61, a rotating shaft 62, a clamping prism 64, a rolling and unwinding roller 65, a diamond-shaped clamping hole 611 and a synchronous rotating assembly. The top of the filter box 91 The front side is located at the position of the front side of the sealant block 55 and is provided with a bracket 61, which is rotatably connected with two longitudinal rotating shafts 62, and the rear ends of the two rotating shafts 62 are respectively connected with two clamping prisms 64, and the two clamping The rear end of the connecting prism 64 is engaged with the diamond-shaped clamping hole 611 in the middle of the front end of the two winding and unwinding rollers 65 respectively. Synchronously rotate the components.

The filter cloth rolling and replacing unit 6 also includes a limiting end plate 63 and a limiting ring 66. One end of the clamping prism 64 connected to the rotating shaft 62 is provided with a limiting end plate 1 63, and the two ends of the unwinding roller 65 are respectively provided with limiting rings. The position ring 66, the limit ring 66 can limit the side of the replaceable filter cloth 56 wound on the unwinding roller 65;

The synchronous rotation assembly can drive the two rotating shafts 62 to rotate in the same direction relative to the bracket 61, and the two clamping prisms 64 are respectively clamped to install two unwinding rollers 65, when the two unwinding rollers 65 rotate in the same direction, one of the unwinding rollers 65 releases the replaceable filter cloth 56 that self-winds, and another unwinding roller 65 rolls up the replaceable filter cloth 56 that has been used, and completes the replacement of the replaceable filter cloth 56 filter positions;

The synchronous rotation assembly includes a motor base 67, a rolling discharge motor 68, a pulley 69, and a timing belt 610. The front ends of the two rotating shafts 62 are respectively fixedly connected with a pulley 69, and the two pulleys 69 are connected by a transmission of the timing belt 610, and one of them rotates The front end of the shaft 62 is fixedly connected to the output shaft of the winding discharge motor 68, and the winding discharge motor 68 is fixed on the top of the filter box 91 through the motor base 67. The winding discharge motor 68 can drive two rotating shafts 62 through the transmission of the pulley 69 and the timing belt 610. Rotate synchronously in the same direction.

Embodiment 3, please refer to Figures 2 and 4. This embodiment provides a technical solution: a village and town sewage treatment device. The structure of this embodiment is roughly the same as that of Embodiment 2. The difference is that:

It also includes a rolling and unwinding roller rotating and pressing unit 7. The top rear side of the filter box 91 is located at the position behind the two winding and unwinding rollers 65, and two winding and unwinding rollers are installed respectively. The pressing prism 78 at the front end of the unit 7 engages with the diamond-shaped clamping hole 611 at the middle part of the rear end of the two winding and unwinding rollers 65 respectively. The unwinding roller rotation pressing unit 7 can compress the rear ends of the two unwinding rollers 65 to prevent the unwinding roller 65 from loosening backward from the clamping prism 64 without affecting the rotation of the unwinding roller 65;

The rolling and unwinding roller rotation pressing unit 7 includes a mounting frame 71, a vertical sliding column 72, a threaded rod 73, a knob 74, a driven shaft 75, a pressing movable plate 76, a limit end plate 2 77, a pressing prism 78, and a filter The top rear side of the box 91 is positioned at the positions behind the two winding and unwinding rollers 65. Mounting brackets 71 are fixed respectively, and vertical vertical sliding posts 72 are fixed in the mounting brackets 71, and longitudinal threaded rods 73 are connected to the mounting brackets 71 in rotation. One end of the threaded rod 73 is connected with a knob 74, the screw hole at the bottom of the pressing movable plate 76 is threadedly connected with the threaded rod 73, the sliding hole at the bottom of the pressing movable plate 76 is slidably connected with the vertical sliding column 72, and the top of the pressing movable plate 76 is slidably connected. The longitudinal driven shaft 75 is connected with the bearing rotation, and the front end of the driven shaft 75 is fixedly connected to the compression prism 78, and the rear end of the compression prism 78 is provided with a limit end plate 2 77, and the two compression prisms 78 can snap into two A diamond-shaped clamping hole 611 at the rear end of the unwinding roller 65 compresses the rear end of the unwinding roller 65, while preventing the unwinding roller 65 from being clamped with the clamping prism 64;

When the replaceable filter cloth 56 on the unwinding roller 65 of the replaceable filter cloth 56 is released, the twist knob 74 drives the threaded rod 73 to rotate, and the pressing action is caused by the threaded action of the threaded rod 73 and the pressing movable plate 76 Plate 76 moves backwards along vertical sliding column 72, can take off winding and unwinding roller 65, then change a winding and unwinding roller 65 that is full of replaceable filter cloth 56, and then replace new replaceable filter cloth 56 ends with the one in use replaceable filter cloth 56 end seams, and then the pressing prism 78 is pressed again to wrap the unwinding roller 65 of the replaceable filter cloth 56, and the unwinding roller 65 of the replaceable filter cloth 56 after another winding is also used It can be replaced according to the above mode.

Embodiment 4, please refer to Figures 2 and 5. This embodiment provides a technical solution: a village sewage treatment device. The structure of this embodiment is roughly the same as that of Embodiment 3, except that:

Also includes the outer wall scraping unit 8, the outer wall scraping unit 8 includes a connecting shaft 81, a side sleeve 82, a connecting block 1 83, a compression spring 84, a connecting block 2 85, an L-shaped rod 86, a scraper 87 and a rotating power Assemblies, the middle part of the front case cover 95 is rotatably connected with a connecting shaft 81 through a sealed bearing, the end of the connecting shaft 81 located outside the front case cover 95 is connected to the rotating power assembly, and the end of the connecting shaft 81 located in the filter box 91 is connected with a shaft perpendicular to the connecting shaft The side cover 82 of the 81 axis, the side cover 82 is slidably connected with an end of the L-shaped bar 86, the end of the side cover 82 is provided with a connection block 1 83, and the middle part of the L-shaped bar 86 is provided with a connection block 2 85, which is connected Block two 85 and connecting block one 83 are connected by a compression spring 84, and the other end of the L-shaped rod 86 is connected to a scraper 87, and the scraper 87 is slidably connected to the outside of the outer filter cartridge 52.

The rotating power assembly drives the connecting shaft 81 to rotate, thereby driving the side sleeve 82 to rotate. Due to the action of the compression spring 84, the L-shaped rod 86 always has a tendency to move toward the connecting shaft 81, so that the scraper 87 and the outer filter cartridge The close contact of the outer wall of the outer filter cartridge 52 can effectively scrape off the filter residue filtered on the outer side of the outer filter cartridge 52, so that the filter residue falls down, and simultaneously reduces the probability of the outer filter cartridge 52 being clogged.

The rotating power assembly includes a scraping motor 88, a driving gear 89, and a driven gear 810. The connecting shaft 81 is positioned at an end outside the front case cover 95 and connected to the driven gear 810. The outside of the front case cover 95 is fixed with a scraping motor 88. The output shaft of the driving motor 88 is connected with a driving gear 89, the driving gear 89 is meshed with the driven gear 810, and the output torque of the scraping motor 88 drives the connecting shaft 81 to rotate after the driving gear 89 and the driven gear 810 change speed. Due to the interference of block 55, scraping motor 88 needs to rotate positively and negatively to make scraper 87 completely scrape off the filter residue on the outside of outer filter cartridge 52.

Embodiment 5, please refer to Figure 1. This embodiment provides a technical solution: a village sewage treatment device. The structure of this embodiment is roughly the same as that of Embodiment 4. The difference is that:

Also includes an exhaust deodorization unit 4, the top discharge port of the aerobic pool 1 is equipped with an exhaust deodorization unit 4, which can filter out the odor discharged from the top discharge port of the aerobic pool 1;

The exhaust deodorization unit 4 includes a fixed sleeve 41, a bolt 2 42, a conical gas collecting hood 43, an exhaust channel 44, an activated carbon adsorption plate 45, a pillar 46, and a baffle plate 47. The top of the aerobic pool 1 is sleeved with a fixed Cover 41, the fixed cover 41 is fixedly connected to the top of the aerobic tank 1 by bolt two 42, the top of the fixed cover 41 is connected to the bottom end of the conical gas collecting hood 43, the top of the conical frustum gas collecting hood 43 is connected to the exhaust passage 44, and the Activated carbon adsorption plate 45 is arranged in the air channel 44, and the top four corners of exhaust channel 44 are connected to baffle plate 47 by pillar 46, and the air overflowing from aerobic pool 1 enters in exhaust channel 44 through conical frustum gas collecting hood 43, passes through The activated carbon adsorption plate 45 in the exhaust passage 44 absorbs and removes the odor in the overflowing air, and the baffle plate 47 can block the top of the exhaust passage 44 to prevent foreign matter from falling into the exhaust passage 44 .

Embodiment 6, please refer to Figure 2. This embodiment provides a technical solution: a village and town sewage treatment device. This embodiment is a further description of Embodiment 1;

The sewage transfer assembly 10 includes a bottom pipe 101, a liquid pump 102, a transfer pipe 103, and a water receiving pipe 104. The bottom side of the aerobic tank 1 is connected to one end of the bottom pipe 101, and the other end of the bottom pipe 101 is connected to the inlet of the liquid pump 102. The outlet of the liquid pump 102 is connected to one end of the transfer pipe 103, the other end of the transfer pipe 103 is connected to one end of the water receiving pipe 104, and the other end of the water receiving pipe 104 passes through the bottom side of the front tank cover 95 and extends into the filter box 91. 102 can pump the sewage in the aerobic pool 1 into the filter box 91 .

It is worth noting that the input ends of the liquid pump 102, solenoid valve 23, scraping motor 88, and winding motor 68 disclosed in the above embodiments are electrically connected to the output end of the external power supply through an external PLC controller, and the scraping motor 88 And roll discharge machine 68 all adopt servo motor, external PLC controller controls liquid pump 102, electromagnetic valve 23, scraping motor 88, roll discharge machine 68 work and adopts the method commonly used in the prior art.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (8)

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 two arched air outlet pipes (27) and air outlet pipe buffering and limiting assemblies, wherein the front end of the bottom of the aerobic pool (1) is provided with the two air inlet pipes (22) in a penetrating manner, the two air inlet pipes (22) are respectively connected with electromagnetic valves (23) in series, one ends of the two air inlet pipes (22) outside the aerobic pool (1) are respectively connected with two outlets of the three-way joint (21), one ends of the two air inlet pipes (22) inside the aerobic pool (1) are respectively connected with one end of two hoses (24), the front end and the rear end of the bottom inside the aerobic pool (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), the tops of the two arched air outlet pipes (27) are respectively provided with aeration heads (28) at equal intervals, the other ends of the two hoses (24) are respectively connected with the two arched air outlet pipes (27), and the two air pipe buffering and limiting assemblies are respectively arranged below the middle parts of the two arched air outlet pipes (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 air sprayed by the aeration head (28), the angle of the arched air outlet pipe (27) is changed, the orientation of the aeration head (28) is changed, and the aeration range is expanded; the external controller switches the switches of the two electromagnetic valves (23), the rotating shaft (26) rotates reversely, so that the other arched air outlet pipe (27) stops when contacting the air outlet pipe buffering and limiting assembly, the up and down alternate movement of the two arched air outlet pipes (27) and the orientation of the aeration head (28) change continuously in sequence, and the aeration effect is improved;

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

the aerobic pool is characterized by further comprising a filtering container unit (9), wherein the filtering container unit (9) comprises a filtering box (91) and a filter residue deposition and discharge assembly, a front box cover (95) is fixed at a mounting port at the front end of the filtering box (91) through a six-bolt (96), one side of the bottom of the aerobic pool (1) is connected with one end of the sewage transfer assembly (10), the other end of the sewage transfer assembly (10) is connected with the side surface of the bottom of the front box cover (95), and a through groove in the bottom of the filtering box (91) is connected with the filter residue deposition and discharge assembly;

still include sewage filter unit (5), sewage filter unit (5) include mesh inner tube (51), outer section of thick bamboo (52) and removable filter cloth (56), the front end middle part of rose box (91) is run through and is equipped with drain pipe (511), the middle part is equipped with fore-and-aft mesh inner tube (51) in rose box (91), the outside of mesh inner tube (51) is equipped with outer section of thick bamboo (52), leave annular gap between mesh inner tube (51) and outer section of thick bamboo (52), and the front end sealing connection of mesh inner tube (51) and outer section of thick bamboo (52), the front end of outer section of thick bamboo (52) is connected with protecgulum (59) through bolt four (510), the tip of drain pipe (511) passes the through-hole at protecgulum (59) middle part and extends to middle part in mesh inner tube (51), rectangular gap has been seted up at the top of outer section of thick bamboo (52), the position that the outside of mesh inner tube (51) is located rectangular gap middle part is equipped with pin (53), the both sides of pin (53) are connected with joint rectangle frame (54) respectively, the top of filter box (91) is inlayed and is equipped with two removable gluey blocks of removable joint in proper order and the removable gluey block (55), the removable gluey block (55) the joint is sealed mounting of two blocks (55) the removable gluey block (55), the removable filter cloth (55) outside the removable filter cloth (55) the sealed mounting of the outside the filter cloth (55) is equipped with two removable block (55), the removable filter cloth (52), the outside the joint is pressed from the position of the outside of straining the rectangular gap is equipped with two removable filter cloth (52) is equipped with the rectangular gap (55) And the rear end of the outer filter cylinder (52) is connected with a rear cover (57) through a third bolt (58).

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: 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).

4. The village and town sewage treatment plant according to claim 1, 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 prism (64) is respectively rolled up with two and is put rhombus card hole (611) joint at 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 the synchronous rotating assembly is connected to the front end of two axis of rotation (62).

5. The village and town sewage treatment plant according to claim 4, 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).

6. The village and town sewage treatment plant according to claim 4, 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), connecting axle (81) are located the outer one end of preceding case lid (95) and are connected and rotate power component, the one end that connecting axle (81) are located rose box (91) is connected with 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 (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) are connected to the other end of L shape pole (86), scraper blade (87) and the outside sliding connection of outer section of straining a section of thick bamboo (52).

7. 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).

8. The treatment process of the village and town sewage treatment plant according to any one of claims 1-7, 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 adhesion unit (3), the gas adheres to the air adhesion balls (34), the contact time of the gas and 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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