CN214495960U - High-efficient dephosphorization denitrification device - Google Patents

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a high-efficiency phosphorus and nitrogen removal device, which avoids the influence of impurities in sewage on the efficiency of phosphorus and nitrogen removal, improves the efficiency of phosphorus and nitrogen removal and enhances the practicability; including the bottom plate, filter the storehouse, the filter screen, the inlet pipe, the funnel, a supporting plate, including a motor, an end cap, a controller, and a cover plate, stirring vane, the air pump, vertical trachea, horizontal trachea, the exhaust hole, first apron, square drain pipe, the axis of rotation, the stopper, the closing plate, a spring, inlet tube and blow off pipe, filter storehouse fixed mounting is in the upper end of bottom plate, filter the inside cavity that is provided with of storehouse, filter screen fixed mounting is in the lower part of filtering the storehouse cavity, two sets of inlet pipe fixed mounting are in the upper end of filtering the storehouse, the output of two sets of inlet pipes and the cavity intercommunication of filtering the storehouse, two sets of funnels are fixed mounting respectively in the upper end of two sets of inlet pipes, backup pad fixed mounting is at the left end of filtering the storehouse, be provided with the strengthening rib in the backup pad.

Description

High-efficient dephosphorization denitrification device

Technical Field

The utility model relates to a sewage treatment's technical field especially relates to a high-efficient dephosphorization denitrification facility.

Background

With the development of society, the water consumption of people is gradually increased, more and more liquid is generated by sewage, and the sewage treatment becomes a main problem. The existing sewage treatment is to carry out dephosphorization and denitrification on sewage in order to ensure that the discharged water reaches the qualified standard, the existing method is to directly discharge the sewage into a dephosphorization and denitrification device for treatment, and because a large amount of sludge and particulate matters exist in the sewage, the dephosphorization and denitrification efficiency is low, the effect is poor, the dephosphorization and denitrification efficiency is seriously influenced, and the practicability is low.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a high-efficient dephosphorization denitrification device which has avoided impurity influence dephosphorization denitrification efficiency in the sewage, has improved dephosphorization denitrification efficiency, has strengthened the practicality.

The utility model relates to a high-efficiency dephosphorizing and denitrifying device, which comprises a bottom plate, a filter bin, a filter screen, feeding pipes, a funnel, a support plate, a motor, a rotating shaft, a stirring blade, an air pump, a longitudinal air pipe, a transverse air pipe, an exhaust hole, a first cover plate, a square drain pipe, a rotating shaft, a limiting block, a sealing plate, a spring, a water inlet pipe and a blow-off pipe, wherein the filter bin is fixedly arranged at the upper end of the bottom plate, a cavity is arranged inside the filter bin, the filter screen is fixedly arranged at the lower part inside the cavity of the filter bin, two groups of feeding pipes are fixedly arranged at the upper end of the filter bin, the output ends of the two groups of feeding pipes are communicated with the cavity of the filter bin, the two groups of funnels are respectively and fixedly arranged at the upper ends of the two groups of feeding pipes, the support plate is fixedly arranged at the left end of the filter bin, a reinforcing rib is arranged on the support plate, the support plate is positioned above the filter screen, the upper end of the reinforcing rib is fixedly arranged at the lower end of the support plate, the right end of the reinforcing rib is fixedly arranged at the left end of the filtering bin, the motor is fixedly arranged at the upper end of the supporting plate, the output end of the motor is connected with the left end of the rotating shaft, the right part of the rotating shaft is positioned in the cavity of the filtering bin, the rotating shaft is rotatably connected with the filtering bin, a plurality of groups of stirring blades are fixedly arranged at the right part of the rotating shaft, the plurality of groups of stirring blades are positioned in the cavity of the filtering bin, the air pump is fixedly arranged at the upper end of the filtering bin, the output end of the air pump is connected with the input end of the longitudinal air pipe, the longitudinal air pipe is longitudinally arranged at the lower end of the air pump, the lower part of the longitudinal air pipe is positioned in the cavity of the filtering bin, the longitudinal air pipe is positioned above the filtering screen, the transverse air pipe is transversely arranged at the lower end of the longitudinal air pipe, the input end of the transverse air pipe is connected with the output end of the longitudinal air pipe, a plurality of groups of exhaust holes are arranged on the transverse air pipe, the transverse air pipe is positioned in the cavity of the filtering bin, the upper part of the filter bin is provided with a cleaning port which is communicated with a cavity of the filter bin, a first cover plate is arranged on the outer side of the cleaning port through bolts, the input end of a square drain pipe is communicated with the cavity of the filter bin, the square drain pipe is positioned below the first cover plate and above a transverse air pipe, valves are arranged on the square drain pipe, the square drain pipe is square, the right part of the square drain pipe is positioned on the right side of the filter bin, the output end of the square drain pipe is connected with a phosphorus and nitrogen removal device, two groups of rotating shafts are rotatably arranged on the upper side and the lower side of the right end of the square drain pipe, two groups of limiting blocks are fixedly arranged on the upper side and the lower side of the right end of the square drain pipe, two groups of sealing plates are respectively and fixedly arranged on the two groups of rotating shafts, the right ends of the two groups of sealing plates can seal the right end of the square drain pipe in a closed state, and the right ends of two groups of springs are respectively and fixedly arranged on the left ends of the two groups of sealing plates, the left ends of two sets of springs are fixed mounting respectively at the upper and lower both ends of square drain pipe inner wall, and two sets of springs are the slope installation, the output of inlet tube and the cavity intercommunication of crossing the filter bin, and the inlet tube is located the below of filter screen, and the input and the outside sewage of inlet tube are connected, and the input of blow off pipe and the cavity intercommunication of crossing the filter bin, the blow off pipe is located the below of inlet tube, is provided with the valve on the blow off pipe.

The utility model discloses a high-efficient dephosphorization denitrification device still includes the guide plate, and the guide plate slope is installed in the bottom of filtering the storehouse cavity, and the guide plate is located the lower extreme of filter screen, and the inclined plane of guide plate dashes to the blow off pipe.

The utility model discloses a high-efficient dephosphorization denitrification device still includes the blast pipe, and blast pipe fixed mounting is on the upper portion of filtering the storehouse, and the blast pipe is located the top of first apron, is provided with the ball valve on the blast pipe, and the ball valve is located the outside of filtering the storehouse.

The utility model discloses a high-efficient dephosphorization denitrification device still includes second apron and bolt, is provided with the access hole on filtering the storehouse, and the access hole is located the lower part of filtering the storehouse, and the access hole communicates with each other with the cavity of filtering the storehouse, and the second apron passes through the bolt and installs the outside at the access hole.

The utility model discloses a high-efficient dephosphorization denitrification device still includes the level gauge, and level gauge fixed mounting is on filtering the storehouse, and the input of level gauge is located inside the cavity of filtering the storehouse.

The utility model discloses a high-efficient dephosphorization denitrification device still includes the base, and base fixed mounting is at the lower extreme of filtering the storehouse.

The utility model discloses a high-efficient dephosphorization denitrification device filters the storehouse and is stainless steel.

The utility model discloses a high-efficient dephosphorization denitrification device is provided with the check valve on the vertical trachea.

Compared with the prior art, the beneficial effects of the utility model are that: firstly, sewage is conveyed to the lower part of a filter bin cavity through a water pump and a water inlet pipe, large-particle impurities are filtered out by a filter screen in the process of rising the sewage, then the water enters the upper part of the filter screen, a flocculating agent is added into the water at the upper part of the filter bin cavity through two groups of hoppers and feed pipes, then a motor is started, the motor drives a rotating shaft and a stirring blade to rotate, the rotating stirring blade enables the water above the filter screen to tumble, the flocculating agent is fully mixed with the water at the upper part of the filter screen, the flocculating agent enables small-particle impurities in the water at the upper part of the filter screen to be adsorbed and gathered on the flocculating agent to form flocs, then an air pump is started, the air pump enables the air to enter a transverse air pipe through a longitudinal air pipe, then the air in the transverse air pipe is discharged through a plurality of groups of exhaust holes, bubbles are formed in the water at the upper part of the filter screen, and the plurality of groups of exhaust holes enable the air to uniformly form bubbles in the water, because the floc is mostly of a net structure, so that bubbles are easily intercepted, the bubbles are combined with the floc formed by a flocculating agent in the rising process, and a structure with the density smaller than that of water is formed, so that small particle impurities float on the water surface, then the first cover plate is opened to remove the impurities floating on the water surface, then the valve on the square drain pipe is opened, because the water surface is positioned above the square drain pipe, the two groups of sealing plates are pushed open by the pressure of the water, then the water with the sewage and the impurities removed enters the dephosphorization and denitrification device for treatment, then the water level is gradually reduced along with the discharge of the water, when the pressure of the water is not enough to push open the springs, the two groups of sealing plates are pulled by the two groups of springs, so that the two groups of sealing plates close and seal the right end of the square drain pipe, the discharge of the impurities on the liquid surface at the upper end of the sewage is prevented, and then the sewage is continuously introduced into the filter bin through the water inlet pipe for continuous treatment, through the arrangement, the floating impurities and particles in the sewage are removed in advance, the influence of the impurities in the sewage on the efficiency of dephosphorization and denitrification is avoided, the efficiency of dephosphorization and denitrification is improved, and the practicability is enhanced.

Drawings

Fig. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic structural view of the connection of a square drain pipe, a spring, a rotating shaft and the like;

FIG. 3 is a schematic view showing the structure of the connection of the air pump, the longitudinal air tube and the transverse air tube;

FIG. 4 is a schematic view showing the structure of the connection of the motor, the rotary shaft, the stirring blade and the like;

in the drawings, the reference numbers: 1. a base plate; 2. a filtering bin; 3. a filter screen; 4. a feed pipe; 5. a funnel; 6. a support plate; 7. reinforcing ribs; 8. a motor; 9. a rotating shaft; 10. a stirring blade; 11. an air pump; 12. a longitudinal trachea; 13. a transverse trachea; 14. an exhaust hole; 15. a first cover plate; 16. a square drain pipe; 17. a rotating shaft; 18. a limiting block; 19. a sealing plate; 20. a spring; 21. a water inlet pipe; 22. a blow-off pipe; 23. a baffle; 24. an exhaust pipe; 25. a ball valve; 26. a second cover plate; 27. a bolt; 28. a liquid level meter; 29. a base.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in figures 1 to 4, the utility model relates to a high-efficiency phosphorus and nitrogen removal device, which comprises a bottom plate 1, a filter bin 2, a filter screen 3, inlet pipes 4, a funnel 5, a support plate 6, a motor 8, a rotating shaft 9, stirring blades 10, an air pump 11, a longitudinal air pipe 12, a transverse air pipe 13, an exhaust hole 14, a first cover plate 15, a square drain pipe 16, a rotating shaft 17, a limiting block 18, a sealing plate 19, a spring 20, an inlet pipe 21 and a drain pipe 22, wherein the filter bin 2 is fixedly arranged at the upper end of the bottom plate 1, a cavity is arranged inside the filter bin 2, the filter screen 3 is fixedly arranged at the lower part inside the cavity of the filter bin 2, the two groups of inlet pipes 4 are fixedly arranged at the upper end of the filter bin 2, the output ends of the two groups of inlet pipes 4 are communicated with the cavity of the filter bin 2, the two groups of funnels 5 are respectively and fixedly arranged at the upper ends of the two groups of inlet pipes 4, the support plate 6 is fixedly arranged at the left end of the filter bin 2, the support plate 6 is provided with a reinforcing rib 7, the support plate 6 is positioned above the filter screen 3, the upper end of the reinforcing rib 7 is fixedly arranged at the lower end of the support plate 6, the right end of the reinforcing rib 7 is fixedly arranged at the left end of the filter bin 2, the motor 8 is fixedly arranged at the upper end of the support plate 6, the output end of the motor 8 is connected with the left end of the rotating shaft 9, the right part of the rotating shaft 9 is positioned in the cavity of the filter bin 2, the rotating shaft 9 is rotatably connected with the filter bin 2, a plurality of groups of stirring blades 10 are fixedly arranged at the right part of the rotating shaft 9, a plurality of groups of stirring blades 10 are positioned in the cavity of the filter bin 2, the air pump 11 is fixedly arranged at the upper end of the filter bin 2, the output end of the air pump 11 is connected with the input end of a longitudinal air pipe 12, the longitudinal air pipe 12 is longitudinally arranged at the lower end of the air pump 11, the lower part of the longitudinal air pipe 12 is positioned in the cavity of the filter bin 2, and the longitudinal air pipe 12 is positioned above the filter screen 3, the horizontal air pipe 13 is transversely arranged at the lower end of the vertical air pipe 12, the input end of the horizontal air pipe 13 is connected with the output end of the vertical air pipe 12, a plurality of groups of exhaust holes 14 are arranged on the horizontal air pipe 13, the horizontal air pipe 13 is positioned inside the cavity of the filtering bin 2, the plurality of groups of exhaust holes 14 are positioned at the upper end of the horizontal air pipe 13, the upper part of the filtering bin 2 is provided with a cleaning port which is communicated with the cavity of the filtering bin 2, a first cover plate 15 is arranged at the outer side of the cleaning port through bolts, the input end of a square drain pipe 16 is communicated with the cavity of the filtering bin 2, the square drain pipe 16 is positioned below the first cover plate 15 and above the horizontal air pipe 13, the square drain pipe 16 is provided with valves, the square drain pipe 16 is square, the right part of the square drain pipe 16 is positioned at the right side of the filtering bin 2, the output end of the square drain pipe 16 is connected with a phosphorus and nitrogen removal device, two groups of rotating shafts 17 are rotatably arranged at the upper and lower sides of the right end of the square drain pipe 16, two groups of limiting blocks 18 are fixedly arranged on the upper side and the lower side of the right end of the square drain pipe 16, two groups of sealing plates 19 are respectively fixedly arranged on two groups of rotating shafts 17, the two groups of sealing plates 19 can seal the right end of the square drain pipe 16 in a closed state, the right ends of two groups of springs 20 are respectively fixedly arranged on the left ends of the two groups of sealing plates 19, the left ends of the two groups of springs 20 are respectively fixedly arranged on the upper end and the lower end of the inner wall of the square drain pipe 16, the two groups of springs 20 are obliquely arranged, the output end of a water inlet pipe 21 is communicated with the cavity of the filter bin 2, the water inlet pipe 21 is positioned below the filter screen 3, the input end of the water inlet pipe 21 is connected with external sewage, the input end of a sewage discharge pipe 22 is communicated with the cavity of the filter bin 2, the sewage discharge pipe 22 is positioned below the water inlet pipe 21, and a valve is arranged on the sewage discharge pipe 22; firstly, sewage is conveyed to the lower part of a cavity of a filtering bin 2 through a water pump and a water inlet pipe 21, in the process of rising, large-particle impurities are filtered out by a filtering net 3, then the water enters the upper part of the filtering net 3, then a flocculating agent is added into the water at the upper part of the cavity of the filtering bin 2 through two groups of funnels 5 and a feeding pipe 4, then a motor 8 is started, the motor 8 drives a rotating shaft 9 and a stirring blade 10 to rotate, the water above the filtering net 3 is overturned by the rotating stirring blade 10, the flocculating agent is fully mixed with the water at the upper part of the filtering net 3, the flocculating agent enables small-particle impurities in the water at the upper part of the filtering net 3 to be adsorbed and gathered on the flocculating agent to form flocs, then an air pump 11 is started, the air pump 11 enables air to enter a transverse air pipe 13 through a longitudinal air pipe 12, then the air in the transverse air pipe 13 is discharged through a plurality of groups of exhaust holes 14, and bubbles are formed in the water at the upper part of the filtering net 3, the multiunit exhaust hole 14 makes gas evenly form bubbles in water, because the floc is mostly network structure, so easily hold back the bubbles, the bubbles combine with the floc that the flocculating agent formed at the in-process that rises, form the structure that density is less than water, so make the small particle impurity float to the surface of water, then open first apron 15, get rid of the impurity that floats on the surface of water, then open the valve on the square drain pipe 16, because the surface of water is located the top of square drain pipe 16, the pressure of water backs off two sets of sealing plates 19, the water that later removed sewage and impurity enters the dephosphorization denitrification facility and handles can, follow the discharge of water afterwards, the water level descends gradually, when the pressure of water is not enough to back off spring 20, two sets of spring 20 stimulate two sets of sealing plates 19, make two sets of sealing plates 19 close the right-hand member of sealed square drain pipe 16, the impurity discharge on the sewage upper end liquid level has been prevented, continue afterwards with sewage let in through inlet tube 21 filter chamber 2 in continue to handle can, through the aforesaid setting, got rid of floating impurity and granule in the sewage in advance, avoided impurity influence dephosphorization denitrogenation's in the sewage efficiency, improved dephosphorization denitrogenation's efficiency, strengthened the practicality.

The utility model discloses a high-efficiency phosphorus and nitrogen removal device, which also comprises a guide plate 23, wherein the guide plate 23 is obliquely arranged at the bottom of the cavity of the filter bin 2, the guide plate 23 is positioned at the lower end of the filter screen 3, and the inclined plane of the guide plate 23 is towards the blow-off pipe 22; through the arrangement, the device is beneficial to the sludge and impurities to slide to the input end of the sewage discharge pipe 22 through the guide plate 23, the sludge is convenient to discharge, and the convenience in the use process is improved.

The utility model discloses a high-efficient dephosphorization denitrification facility, still include blast pipe 24, blast pipe 24 is fixed to be installed in the upper portion of filtering the storehouse 2, the blast pipe 24 is located the top of the first cover plate 15, there is a ball valve 25 on the blast pipe 24, the ball valve 25 is located the outside of filtering the storehouse 2; through the arrangement, the discharge of gas in the cavity of the filter bin 2 is facilitated, the pressure intensity in the cavity of the filter bin 2 is prevented from being increased by gas, and the safety in the use process is improved.

The utility model discloses a high-efficient dephosphorization denitrification device, still include second apron 26 and bolt 27, be provided with the access hole on the filtration storehouse 2, the access hole is located the lower part of filtration storehouse 2, the access hole communicates with each other with the cavity of filtration storehouse 2, second apron 26 is installed in the outside of access hole through bolt 27; through the arrangement, the overhaul and the maintenance of the equipment in the 2 cavities of the filter bin are facilitated, and the convenience in the use process is improved.

The utility model discloses a high-efficiency phosphorus and nitrogen removal device, which also comprises a liquid level meter 28, wherein the liquid level meter 28 is fixedly arranged on the filtering bin 2, and the input end of the liquid level meter 28 is positioned inside the cavity of the filtering bin 2; through the arrangement, the water level in the cavity of the filter bin 2 can be observed conveniently, and the convenience in the use process is improved.

The utility model discloses a high-efficiency phosphorus and nitrogen removal device, which also comprises a base 29, wherein the base 29 is fixedly arranged at the lower end of the filtering bin 2; through the arrangement, the stability of the bottom plate 1 in the using process is improved.

The utility model relates to a high-efficiency phosphorus and nitrogen removal device, a filter bin 2 is made of stainless steel; through the arrangement, the filter bin 2 is prevented from rusting, and the service life of the filter bin 2 is prolonged.

The utility model relates to a high-efficiency dephosphorizing and denitrifying device, a one-way valve is arranged on a longitudinal air pipe 12; through the arrangement, sewage is prevented from flowing back to the air pump 11 through the longitudinal air pipe 12, and the reliability in the using process is improved.

The utility model discloses a high-efficient dephosphorization denitrification facility, it is at work, at first carry sewage through water pump and inlet tube 21 to the lower part of filtering the 2 cavities in storehouse, sewage is at the in-process that rises, the impurity of large granule is filtered out by filter screen 3, later water enters into the top of filter screen 3, then add the flocculating agent into the aquatic of filtering the 2 cavities upper portions in storehouse through two sets of funnels 5 and inlet pipe 4, then open motor 8, motor 8 drives pivot 9 and stirring vane 10 rotatory, rotatory stirring vane 10 makes the water above filter screen 3 billow, make flocculating agent and the water of filter screen 3 upper portion fully mix, the flocculating agent makes the granule impurity in the aquatic of filter screen 3 upper portion adsorb the gathering and form the floccule on the flocculating agent, then open air pump 11, air pump 11 makes gas enter into horizontal trachea 13 through vertical trachea 12, later the gas in the horizontal trachea 13 is discharged through multiunit exhaust hole 14, and bubbles are formed in the water at the upper part of the filter screen 3, the air is uniformly formed in the water by the plurality of groups of exhaust holes 14, the bubbles are easily intercepted because the flocs are mostly of a net structure, the bubbles are combined with the flocs formed by the flocculating agent in the rising process to form a structure with density smaller than that of the water, so small particle impurities float on the water surface, then the first cover plate 15 is opened to remove the impurities floating on the water surface, then the valve on the square drain pipe 16 is opened, the water pressure pushes the two groups of sealing plates 19 open because the water surface is positioned above the square drain pipe 16, then the water with the sewage and the impurities removed enters the dephosphorization and denitrification device for treatment, then the water level is gradually reduced along with the discharge of the water, when the water pressure is not enough to push the springs 20, the two groups of sealing plates 19 are pulled by the two groups of springs 20 to close and seal the right end of the square drain pipe 16, the impurity on the liquid level at the upper end of the sewage is prevented from being discharged, and then the sewage is continuously introduced into the filtering bin 2 through the water inlet pipe 21 for continuous treatment.

The installation mode, the connection mode or the setting mode of the high-efficiency phosphorus and nitrogen removal device of the utility model are common mechanical modes, and the device can be implemented as long as the beneficial effects can be achieved; the utility model discloses a high-efficient dephosphorization denitrification facility's filter screen 3, motor 8, air pump 11, spring 20, guide plate 23, ball valve 25 and level gauge 28 for purchase on the market, this industry technical staff only need according to its subsidiary instructions install and operate can.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (8)

1. A high-efficiency dephosphorization and denitrification device is characterized by comprising a bottom plate (1), a filtering bin (2), a filtering screen (3), feeding pipes (4), a funnel (5), a supporting plate (6), a motor (8), a rotating shaft (9), stirring blades (10), an air pump (11), a longitudinal air pipe (12), a transverse air pipe (13), exhaust holes (14), a first cover plate (15), a square drain pipe (16), a rotating shaft (17), a limiting block (18), a sealing plate (19), a spring (20), a water inlet pipe (21) and a sewage discharge pipe (22), wherein the filtering bin (2) is fixedly arranged at the upper end of the bottom plate (1), a cavity is arranged inside the filtering bin (2), the filtering screen (3) is fixedly arranged at the lower part inside the cavity of the filtering bin (2), two groups of feeding pipes (4) are fixedly arranged at the upper end of the filtering bin (2), the output ends of the two groups of feeding pipes (4) are communicated with the cavity of the filtering bin (2), two groups of funnels (5) are respectively and fixedly arranged at the upper ends of two groups of feeding pipes (4), a supporting plate (6) is fixedly arranged at the left end of a filtering bin (2), a reinforcing rib (7) is arranged on the supporting plate (6), the supporting plate (6) is positioned above a filtering net (3), the upper end of the reinforcing rib (7) is fixedly arranged at the lower end of the supporting plate (6), the right end of the reinforcing rib (7) is fixedly arranged at the left end of the filtering bin (2), a motor (8) is fixedly arranged at the upper end of the supporting plate (6), the output end of the motor (8) is connected with the left end of a rotating shaft (9), the right part of the rotating shaft (9) is positioned in a cavity of the filtering bin (2), the rotating shaft (9) is rotatably connected with the filtering bin (2), a plurality of stirring blades (10) are fixedly arranged at the right part of the rotating shaft (9), the plurality of stirring blades (10) are positioned in the cavity of the filtering bin (2), an air pump (11) is fixedly arranged at the upper end of the filtering bin (2), the output end of an air pump (11) is connected with the input end of a longitudinal air pipe (12), the longitudinal air pipe (12) is longitudinally arranged at the lower end of the air pump (11), the lower part of the longitudinal air pipe (12) is positioned in a cavity of a filtering bin (2), the longitudinal air pipe (12) is positioned above a filter screen (3), a transverse air pipe (13) is transversely arranged at the lower end of the longitudinal air pipe (12), the input end of the transverse air pipe (13) is connected with the output end of the longitudinal air pipe (12), a plurality of groups of exhaust holes (14) are arranged on the transverse air pipe (13), the transverse air pipe (13) is positioned in the cavity of the filtering bin (2), the plurality of groups of exhaust holes (14) are positioned at the upper end of the transverse air pipe (13), a cleaning port is arranged at the upper part of the filtering bin (2) and communicated with the cavity of the filtering bin (2), a first cover plate (15) is arranged at the outer side of the cleaning port through bolts, the input end of a square drain pipe (16) is communicated with the cavity of the filtering bin (2), the square drainage pipe (16) is positioned below the first cover plate (15) and above the transverse air pipe (13), a valve is arranged on the square drainage pipe (16), the square drainage pipe (16) is square, the right part of the square drainage pipe (16) is positioned on the right side of the filter bin (2), the output end of the square drainage pipe (16) is connected with the dephosphorization and denitrification device, two groups of rotating shafts (17) are rotatably arranged on the upper side and the lower side of the right end of the square drainage pipe (16), two groups of limiting blocks (18) are fixedly arranged on the upper side and the lower side of the right end of the square drainage pipe (16), two groups of sealing plates (19) are respectively and fixedly arranged on the two groups of rotating shafts (17), the right end of the square drainage pipe (16) can be sealed by the two groups of sealing plates (19) in a closed state, the right ends of the two groups of springs (20) are respectively and fixedly arranged on the left end and the upper end and the lower end of the inner wall of the square drainage pipe (16), two sets of springs (20) are the slope installation, the output of inlet tube (21) and the cavity intercommunication of crossing filter bin (2), and inlet tube (21) are located the below of filter screen (3), and the input and the outside sewage of inlet tube (21) are connected, and the input of blow off pipe (22) and the cavity intercommunication of crossing filter bin (2), and blow off pipe (22) are located the below of inlet tube (21), are provided with the valve on blow off pipe (22).

2. The efficient phosphorus and nitrogen removal device as claimed in claim 1, further comprising a guide plate (23), wherein the guide plate (23) is obliquely arranged at the bottom of the chamber of the filter bin (2), the guide plate (23) is positioned at the lower end of the filter screen (3), and the inclined surface of the guide plate (23) is flushed towards the sewage discharge pipe (22).

3. The efficient phosphorus and nitrogen removal device as claimed in claim 2, further comprising an exhaust pipe (24), wherein the exhaust pipe (24) is fixedly installed at the upper part of the filtering bin (2), the exhaust pipe (24) is located above the first cover plate (15), a ball valve (25) is arranged on the exhaust pipe (24), and the ball valve (25) is located at the outer side of the filtering bin (2).

4. The efficient phosphorus and nitrogen removal device as claimed in claim 3, further comprising a second cover plate (26) and a bolt (27), wherein the filter bin (2) is provided with an access hole, the access hole is positioned at the lower part of the filter bin (2), the access hole is communicated with the chamber of the filter bin (2), and the second cover plate (26) is installed at the outer side of the access hole through the bolt (27).

5. The dephosphorizing and denitrifying device according to claim 4, further comprising a liquid level meter (28), wherein the liquid level meter (28) is fixedly installed on the filtering bin (2), and the input end of the liquid level meter (28) is located inside the chamber of the filtering bin (2).

6. The efficient phosphorus and nitrogen removal device as claimed in claim 5, further comprising a base (29), wherein the base (29) is fixedly installed at the lower end of the filter bin (2).

7. The efficient phosphorus and nitrogen removal device as claimed in claim 6, wherein the filter bin (2) is made of stainless steel.

8. The dephosphorizing and denitrifying device according to claim 7, wherein a check valve is installed on the longitudinal gas pipe (12).

Images