CN211111503U

CN211111503U - Multistage sewage treatment device

Info

Publication number: CN211111503U
Application number: CN201921674532.8U
Authority: CN
Inventors: 王林; 罗学才; 谷中华; 尹若春
Original assignee: Hefei Shixiandu Biotechnology Co ltd
Current assignee: Hefei Shixiandu Biotechnology Co ltd
Priority date: 2019-10-09
Filing date: 2019-10-09
Publication date: 2020-07-28
Anticipated expiration: 2029-10-09

Abstract

The utility model provides a multi-stage sewage treatment device, which comprises an exhaust pipe, a filtering part, an oxidation part and a flocculation precipitation part; the filter part comprises a treatment box body, the side part of the treatment box body is communicated with the discharge pipe, a first filter plate is arranged in the treatment box body, one end of the first filter plate is arranged at the bottom end of the discharge pipe, and the other end of the first filter plate is rotatably connected with a second filter plate; the bottom end of the first filter plate is provided with a pushing mechanism; the oxidation part comprises a second partition plate, an oxidation chamber is formed between the side part of the second partition plate and the treatment box body as well as the second filter plate, and a water pump is arranged in the oxidation chamber; the flocculation and precipitation part comprises a first partition plate, a flocculation and precipitation chamber is formed between the bottom end of the first partition plate and the second partition plate and between the bottom end of the first partition plate and the treatment box body, and the water pump is communicated with the flocculation and precipitation chamber. The utility model discloses a sewage is handled to multi-stage treatment's mode, and the effect is high.

Description

Multistage sewage treatment device

Technical Field

The utility model belongs to the technical field of sewage treatment, in particular to be used for a multistage sewage treatment device.

Background

The water discharged in daily life and industry is sewage which contains various solid waste impurities and organic substances such as carbohydrate, protein, grease, lignin and the like; the substances exist in sewage in a suspended or dissolved state, and if the substances are directly discharged into rivers, seas and rivers, the dissolved oxygen in the sewage is reduced, so that the growth of fishes and other aquatic organisms is influenced; after the dissolved oxygen in water is exhausted, organic matters are subjected to anaerobic decomposition to generate unpleasant odors such as hydrogen sulfide, ammonia, mercaptan and the like, so that the water quality is further deteriorated and the environment is badly influenced; therefore, the treatment of the foul water is highly necessary.

Nowadays, much sewage is directly discharged, and particularly in rural areas, a system and a standard sewage treatment device are not available; a few sewage treatment devices collect sewage in a uniform mode and then treat the sewage; the mode has long transportation time and increased water body odor, and simultaneously, the sewage treatment effect is poor due to simpler treatment means.

SUMMERY OF THE UTILITY MODEL

The utility model discloses not enough to prior art exists provides and is used for a multistage sewage treatment device, and concrete technical scheme is as follows:

a multi-stage sewage treatment apparatus comprising a discharge pipe, a filtration section, an oxidation section and a flocculation precipitation section;

the filter part comprises a treatment box body, the side part of the treatment box body is communicated with the discharge pipe, a first filter plate is arranged in the treatment box body, one end of the first filter plate is arranged at the bottom end of the discharge pipe, and the other end of the first filter plate is rotatably connected with a second filter plate; the bottom end of the first filter plate is provided with a pushing mechanism, and the pushing mechanism is used for pushing the first filter plate to rotate and vibrate;

the oxidation part comprises a second partition plate, an oxidation chamber is formed among the side part of the second partition plate, the treatment box body and the bottom of the second filter plate, and a water pump is arranged in the oxidation chamber;

the flocculation settling part comprises a first partition plate, a flocculation settling chamber is formed between the bottom end of the first partition plate and the treatment box body as well as between the bottom end of the second partition plate and the treatment box body, and the water pump is communicated with the flocculation settling chamber; a sludge discharge port is formed in the side part of the flocculation precipitation chamber; the flocculation precipitation chamber and the oxidation chamber are both communicated with a medicament adding mechanism.

Furthermore, the pushing mechanism comprises a motor, a rotating shaft and a cam disc, the rotating shaft penetrates through and is rotatably connected with the processing box body, and the end part of the rotating shaft is connected with the motor; the rotating shaft penetrates through and is fixed at the edge of the cam disc.

Furthermore, an anti-blocking plate parallel to the first filter plate is arranged at the bottom of the first filter plate, and a thimble is fixed at the top of the anti-blocking plate; the first filter plate is of a mesh structure, and the thimble penetrates through the mesh structure of the first filter plate; the thimble is used for clearing impurities in the mesh.

Furthermore, a waste residue elevator is arranged at the top of the second filter plate and is connected with the first filter plate in a matching way; the waste residue lifting machine includes lifting machine organism, lifting plate tooth and side guard plate, the external fixed surface of lifting machine organism in bank lifting plate tooth, just the lateral part of lifting machine organism is fixed with the side guard plate.

Furthermore, a limiting groove is formed in the bottom of the first filter plate, and the limiting groove is connected with the lifting plate teeth in a matched mode.

Furthermore, the top end of the waste residue elevator penetrates through a second partition plate, and a solid waste collection chamber for containing solid waste is formed among the top end of the first partition plate, the side part of the second partition plate and the treatment box body.

Furthermore, a waste outlet is formed in the top of the solid waste collecting chamber for containing the solid waste, and the top of the waste outlet is connected with a second cover body in a sliding mode.

Furthermore, a first cover body is fixed at the top of the treatment box body, and the first cover body and the second cover body are both of rectangular structures with open tops.

Further, the medicament adding mechanism comprises a push rod, a rubber push block, a material collecting barrel, a manual control valve, a feeding pipe and a nozzle, wherein the material collecting barrel is fixed on the outer side of the processing box body, and the inner part of the material collecting barrel is connected with the rubber push block in a sliding manner; the push rod is fixed at the top of the rubber push block; the bottom end of the material collecting barrel is provided with two feeding pipes which are respectively inserted into the oxidation chamber and the flocculation and precipitation chamber, and the parts of the feeding pipes inserted into the oxidation chamber and the flocculation and precipitation chamber are provided with spray heads; and manual control valves are arranged on the outer sides of the feeding pipes.

Furthermore, a floating ball is placed in the flocculation settling chamber, and a water discharging and discharging pipe penetrates through the floating ball; the water discharging pipe extends out of the processing box body.

The utility model has the advantages that: the filter equipment with a special structure is adopted, firstly, the sewage is filtered, and a part of solid impurities in the sewage are removed, so that the filter equipment with the special structure can effectively prevent a filter plate from being blocked and is convenient for collecting solid waste; in addition, the sewage treatment device is also provided with an oxidation chamber and a flocculation chamber, adopts a multi-stage treatment mode, improves the sewage treatment effect, and is convenient to add medicines when wastewater treatment is carried out.

Drawings

FIG. 1 is a schematic structural view of a multistage sewage treatment apparatus according to an embodiment of the present invention;

fig. 2 shows a schematic structural diagram of a pushing mechanism according to an embodiment of the present invention;

fig. 3 shows a schematic view of the internal structure of an embodiment of the present invention;

FIG. 4 shows an enlarged schematic view of FIG. 3 at A;

fig. 5 shows a schematic structural diagram of the connection between the waste residue elevator and the first filter plate according to the embodiment of the present invention.

Shown in the figure: 1. the device comprises a discharge pipe, 2, a first cover body, 3, a second cover body, 4, a waste outlet, 5, a pushing mechanism, 501, a motor, 502, a rotating shaft, 503, a cam disc, 6, a treatment box body, 7, a sludge discharge port, 8, a medicament adding mechanism, 801, a push rod, 802, a rubber push block, 803, a material collecting barrel, 804, a manual control valve, 805, a feeding pipe, 806, a spray head, 9, a first filter plate, 901, a limiting groove, 10, a waste residue elevator, an elevator body, 1002, 1001, a lifting plate tooth, 1003, a side protection plate, 11, a first partition plate, 12, a second partition plate, 13, a second filter plate, 14, a water pump, 15, a floating ball, 1501, a discharge water pipe, 16, an anti-blocking plate, 1601 and a thimble.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The utility model provides a multi-stage sewage treatment device, which comprises a discharge pipe 1, a filtering part, an oxidation part and a flocculation precipitation part;

the filtering part comprises a processing box body 6, the side part of the processing box body 6 is communicated with the discharge pipe 1, a first filter plate 9 is arranged inside the processing box body 6, one end of the first filter plate 9 is arranged at the bottom end of the discharge pipe 1, and the other end of the first filter plate 9 is rotatably connected with a second filter plate 13; the bottom end of the first filter plate 9 is provided with a pushing mechanism 5, the pushing mechanism 5 is used for pushing the first filter plate 9 to rotate and vibrate, the filtering part is used for filtering sewage and removing a part of solid wastes in the sewage, and meanwhile, the pushing mechanism 5 enables the solid wastes on the filter plate to be vibrated and dropped in a rotating and vibrating mode, so that the filter plate is prevented from being blocked during filtering;

the oxidation part comprises a second partition plate 12, an oxidation chamber is formed by the side part of the second partition plate 12, the treatment box body 6 and the bottom end of the second filter plate 13, a water pump 14 is arranged in the oxidation chamber, and the oxidation part is used for carrying out oxidation treatment on sewage;

the flocculation settling part comprises a first partition plate 11, a flocculation settling chamber is formed between the bottom end of the first partition plate 11 and the second partition plate 12 as well as the treatment box body 6, and the water pump 14 is communicated with the flocculation settling chamber; a sludge discharge opening 7 is formed in the side part of the flocculation precipitation chamber; the flocculation precipitation chamber and the oxidation chamber are both communicated with a medicament adding mechanism 8; the flocculation precipitation part is used for carrying out flocculation precipitation treatment on the sewage.

Specifically, the pushing mechanism 5 comprises a motor 501, a rotating shaft 502 and a cam plate 503, the rotating shaft 502 penetrates through and is rotatably connected with the processing box 6, and the end of the rotating shaft 502 is connected with the motor 501; the rotating shaft 502 penetrates through and is fixed at the edge of the cam plate 503; when the motor 501 drives the rotating shaft 502 to rotate, the cam plate 503 can be driven to rotate, and because the edge of the cam plate 503 is fixed with the rotating shaft 502, the cam plate 503 can jack the first filter plate 9 upwards in the rotating process, and then the first filter plate 9 is continuously rotated to drop, thereby completing the vibrating process.

In order to realize the anti-blocking treatment of the first filter plate 9; an anti-blocking plate 16 parallel to the first filter plate 9 is arranged at the bottom of the first filter plate 9, and a thimble 1601 is fixed at the top of the anti-blocking plate 16; the first filter plate 9 is of a mesh structure, and the thimble 1601 penetrates through the mesh structure of the first filter plate 9; the thimble 1601 is used for clearing up the impurity in the mesh, avoids the jam of first filter plate 9.

In order to realize the treatment of the filtered waste residues, a waste residue elevator 10 is arranged at the top of the second filter plate 13, and the waste residue elevator 10 is connected with the first filter plate 9 in a matching way; the waste residue elevator 10 comprises an elevator body 1001, elevator plate teeth 1002 and a side protection plate 1003, wherein the elevator plate teeth 1002 in a row are fixed on the outer surface of the elevator body 1001, and the side protection plate 1003 is fixed on the side portion of the elevator body 1001. The bottom of the first filter plate 9 is provided with a limiting groove 901, and the limiting groove 901 is connected with the lifting plate teeth 1002 in a matching manner.

In order to store solid waste, the top end of the waste residue elevator 10 penetrates through the second partition plate 12, and a solid waste collection chamber for accommodating the solid waste is formed among the top end of the first partition plate 11, the side part of the second partition plate 12 and the treatment box body 6.

And a waste outlet 4 is formed in the top of the solid waste collection chamber, and the top of the waste outlet 4 is in sliding connection with the second cover body 3. The top of the treatment box body 6 is fixed with a first cover body 2, and the top of the first cover body 2 and the top of the second cover body 3 are both of rectangular structures with openings. Green plants can be planted on the tops of the first cover body 2 and the second cover body 3, and a good greening effect is achieved.

Specifically, the medicine adding mechanism 8 includes a push rod 801, a rubber push block 802, a material collecting barrel 803, a manual control valve 804, a feeding tube 805, and a spray head 806, wherein the material collecting barrel 803 is fixed on the outer side of the processing box 6, and the interior of the material collecting barrel 803 is slidably connected with the rubber push block 802; the top of the rubber push block 802 is fixed with the push rod 801; the bottom end of the material collecting barrel 803 is provided with two feeding pipes 805, the two feeding pipes 805 are respectively inserted into the oxidation chamber and the flocculation and precipitation chamber, and spray nozzles 806 are respectively arranged at the parts of the feeding pipes 805 inserted into the oxidation chamber and the flocculation and precipitation chamber; and manual control valves 804 are respectively installed on the outer sides of the feeding pipes 805, and the addition of the oxidation medicament and the flocculation medicament in the treatment box body 6 is realized through a medicament adding mechanism 8.

In order to discharge sewage conveniently, sludge and the like are precipitated and trapped; a floating ball 15 is arranged in the flocculation settling chamber, and a drainage pipe 1501 penetrates through the floating ball 15; the discharge water pipe 1501 extends outward from the treatment tank 6.

Fig. 1 shows a schematic overall structure diagram of an embodiment of the present invention; exemplarily, as shown in fig. 1, a first cover 2 is fixed on the left side of the top of a treatment box 6, a second cover 3 is slidably connected on the right side of the top of the treatment box 6, and the first cover 2 and the second cover 3 can prevent the emission of foul air and can plant green plants and green air at the same time; be equipped with into pipe 1 in the left side of handling the box 6, the sewage that need handle is arranged in the drain pipe 1 and is used for discharging into, is equipped with pushing mechanism 5 in the front side of handling the box 6, is equipped with mud discharging port 7 in the right side bottom of handling the box 6, and mud discharging port 7 is used for discharging the mud after the sediment.

Fig. 2 shows a schematic structural diagram of a pushing mechanism according to an embodiment of the present invention; illustratively, as shown in fig. 2, the pushing mechanism 5 includes a motor 501, a rotating shaft 502, and a cam plate 503, wherein the right side of the motor 501 is connected to the rotating shaft 502, and the rotating shaft 502 penetrates through the cam plate 503.

Fig. 3 shows a schematic view of the internal structure of an embodiment of the present invention; illustratively, as shown in fig. 3, a first cover body 2 and a second cover body 3 are arranged on the top of the processing box body 6, a discharge pipe 1 is arranged on the left side of the processing box body 6, and the discharge pipe 1 is communicated with the inside of the processing box body 6; the inside of the treatment box 6 is divided into two areas by a vertical second partition plate 12, wherein the left area is divided into by a second filter plate 13: a filtering chamber positioned at the upper part and an oxidation chamber positioned at the lower part; the right region is divided into: a solid waste collection chamber positioned at the upper part and a flocculation precipitation chamber positioned at the lower part; a first filter plate 9 which is obliquely arranged is arranged in the filter chamber; the top of first filter plate 9 is arranged in the bottom that emits into pipe 1 for collect and filter the foul water that emits into pipe 1 whereabouts from emitting, foul water is when striking first filter plate 9, water passes first filter plate 9, and solid useless by being held back on the surface of first filter plate 9, because the slope makes solid useless whereabouts under the inertia effect, the bottom cooperation of first filter plate 9 is connected with waste residue lifting machine 10, waste residue lifting machine 10 adopts the belt lifting machine, by motor drive, when opening waste residue lifting machine 10, can promote solid useless the top of first baffle 11, the solid useless collecting chamber that second baffle 12 left side and treatment box 6 enclose, realize the collection to solid useless.

In order to avoid the solid wastes from being stuck on the first filter plate 9, the first filter plate 9 can be pushed by the pushing mechanism 5 to vibrate; specifically, the rotating shaft 502 is located at the bottom end of the first filter plate 9, and the cam plate 503 is fixed on the rotating shaft 502, when the cam plate 503 is driven by the motor 501 to rotate, and the edge of the cam plate rotates to contact with the first filter plate 9, the first filter plate 9 can be pushed upwards to rotate a certain angle, and then the cam plate is reset under gravity, so that vibration is realized. The primarily filtered foul water then passes through the second filter plate 13, and is secondarily filtered by the second filter plate 13, and in order to improve the filtering effect, the diameter of the mesh of the second filter plate 13 should be smaller than that of the first filter plate 9; the bottom end of the second filter plate 13 is an oxidation chamber, the oxidation chamber stores filtered sewage, an oxidant is added into the oxidation chamber to oxidize the sewage, and an aerator can be arranged in the oxidation chamber in order to improve the effect of the oxidation treatment; a water pump 14 is arranged in the oxidation chamber, the water pump 14 pumps the oxidized sewage into the flocculation precipitation chamber, a flocculating agent is added into the flocculation precipitation chamber, and the sewage is further treated; a floating ball 15 is placed in the flocculation settling chamber, a discharge water pipe 1501 penetrates through the interior of the floating ball 15, the discharge water pipe 1501 stretches out of the treatment box body 6, and the floating ball 15 floats on the water surface, so that treated water can be discharged conveniently; the precipitated sludge and the like are discharged through a sludge discharge port 7, and a valve is arranged in the sludge discharge port 7 for convenient control.

In order to add an oxidizing agent and a flocculating agent, the utility model also comprises a medicament adding mechanism 8, wherein the medicament adding mechanism 8 is similar to an injector in principle, and comprises a material collecting barrel 803, the material collecting barrel 803 adopts a cylindrical structure, the inside of the material collecting barrel 803 is connected with a rubber push block 802 in a sliding way, and when the rubber push block 802 is pulled out, the medicament can be added into the material collecting barrel 803 from the upper part; a push rod 801 is fixed at the top of the rubber push block 802, and the liquid medicine in the material collecting barrel 803 can be pushed to flow out through the push rod 801; the bottom end of the material collecting barrel 803 is connected with two feeding pipes 805, the feeding pipes 805 are provided with manual control valves 804, wherein the manual control valves 804 are rolling valves on the water hanging needle pipes, whether the feeding pipes 805 feed materials or not is controlled through pressure, and the feeding flow can be controlled; the two feed pipes 805 extend into the oxidation chamber and the flocculation precipitation chamber respectively, and the extending parts of the feed pipes 805 are provided with a plurality of nozzles 806 for adding medicaments.

Fig. 4 shows an enlarged schematic structural diagram at a in fig. 3, for example, as shown in fig. 4, an anti-blocking plate 16 parallel to the bottom end of the first filter plate 9 is arranged at the bottom end of the first filter plate 9, ejector pins 1601 are distributed on the anti-blocking plate 16, the ejector pins 1601 are matched with the meshes of the first filter plate 9, and when the first filter plate 9 vibrates, the ejector pins 1601 pierce the meshes of the first filter plate 9, so that the meshes of the first filter plate 9 are cleaned to avoid blocking.

Fig. 5 shows a schematic view of the connection structure of the slag elevator 10 and the first filter plate 9. As shown in fig. 5, rows of lifting plate teeth 1002 are equidistantly arranged on the surface of a lifter body 1001 of the waste residue lifter 10, wherein the lifting plate teeth 1002 are equidistantly distributed, and side protection plates 1003 are arranged on two sides of the lifting plate teeth 1002 for blocking solid waste and preventing the solid waste from falling off from the side; meanwhile, the included angle between the lifting plate tooth 1002 and the lifting machine body 1001 is not more than 90 degrees, so that solid waste is lifted conveniently. Meanwhile, the surface of the first filter plate 9 is provided with limiting grooves 901, and the number and the spacing of the limiting grooves 901 are the same as those of the lifting plate teeth 1002 in one row, so that the lifting plate teeth 1002 can pass through the limiting grooves 901 to be continuously lifted and be solid waste. In order to prevent solid wastes from blocking the meshes of the first filter plate 9, an anti-blocking plate 16 parallel to the bottom of the first filter plate 9 is arranged at the bottom of the first filter plate 9, the anti-blocking plate 16 is fixed at the top of the second filter plate 13, and thimbles 1601 on the upper surface of the anti-blocking plate 16 can penetrate through the meshes of the first filter plate 9 and continuously penetrate through the meshes of the first filter plate 9 to dredge the meshes of the first filter plate 9 when the first filter plate 9 vibrates.

When the device is used, firstly, sewage is discharged into the filtering chamber of the processing box body 6 through the discharge pipe 1, then the motor 501 is started, the motor 501 is utilized to drive the cam disc 503 to rotate, the first filtering plate 9 is vibrated, wastewater passes through the first filtering plate 9, solid waste enters the solid waste collecting chamber under the lifting of the waste residue lifter 10, and the solid waste can be processed by sliding and opening the second cover body 3; the falling wastewater passes through the second filter plate 13 and enters an oxidation chamber, an oxidant, illustratively a certain amount of ferrous sulfate and hydrogen peroxide, is added into the material collecting barrel 803, a manual control valve 804 on a feeding pipe 805 communicated with the oxidation chamber is opened, the rubber push block 802 is pressed down, the oxidant can enter the oxidation chamber, the oxidation is carried out through aeration of an aerator, and after the oxidation is carried out for a period of time, the ferrous sulfate and the hydrogen peroxide with higher concentration can be introduced again through the same method for reoxidation; after the oxidation is finished, the water pump 14 is opened, the oxidized water is pumped into a flocculation and precipitation chamber, then a flocculating agent is added, the flocculating agent is added into the material collecting barrel 803, a certain amount of polyacrylamide and alkali are added exemplarily, a manual control valve 804 on a feeding pipe 805 communicated with the flocculation and precipitation chamber is opened, the rubber push block 802 is pressed down, the flocculating agent can enter the flocculation and precipitation chamber, and the polyacrylamide and alkali are added again for treatment after a certain time, and then precipitation is carried out; after a certain time of sedimentation, the water discharge pipe 1501 is connected to a water pump 14, the treated water is pumped out in a manner that a floating ball 15 floats on the water surface, a valve in the sludge discharge port 7 is opened, and sediments such as sludge are taken out from the sludge discharge port 7.

The utility model discloses area is little, and is multiple functional, can be used to miniature sewage treatment, and the treatment effeciency is high.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a multistage sewage treatment device which characterized in that: the sewage treatment equipment comprises a discharge pipe (1), a filtering part, an oxidation part and a flocculation precipitation part;

the filter part comprises a treatment box body (6), the side part of the treatment box body (6) is communicated with the discharge pipe (1), a first filter plate (9) is arranged inside the treatment box body (6), one end of the first filter plate (9) is arranged at the bottom end of the discharge pipe (1), and the other end of the first filter plate (9) is rotatably connected with a second filter plate (13); the bottom end of the first filter plate (9) is provided with a pushing mechanism (5), and the pushing mechanism (5) is used for pushing the first filter plate (9) to vibrate in a rotating manner;

the oxidation part comprises a second partition plate (12), an oxidation chamber is formed among the side part of the second partition plate (12), the treatment box body (6) and the bottom part of the second filter plate (13), and a water pump (14) is arranged in the oxidation chamber;

the flocculation settling part comprises a first partition plate (11), a flocculation settling chamber is formed between the bottom end of the first partition plate (11) and the second partition plate (12) as well as the treatment tank body (6), and the water pump (14) is communicated with the flocculation settling chamber; a sludge discharge port (7) is formed in the side part of the flocculation precipitation chamber; the flocculation precipitation chamber and the oxidation chamber are both communicated with a medicament adding mechanism (8).

2. The multi-stage sewage treatment apparatus of claim 1, wherein: the pushing mechanism (5) comprises a motor (501), a rotating shaft (502) and a cam plate (503), the rotating shaft (502) penetrates through and is rotatably connected with the processing box body (6), and the end part of the rotating shaft (502) is connected with the motor (501); the rotating shaft (502) penetrates through and is fixed at the edge of the cam plate (503).

3. The multi-stage sewage treatment apparatus of claim 1, wherein: an anti-blocking plate (16) parallel to the first filter plate (9) is arranged at the bottom of the first filter plate, and a thimble (1601) is fixed at the top of the anti-blocking plate (16); the first filter plate (9) is of a mesh structure, and the thimble (1601) penetrates through the mesh structure of the first filter plate (9); the thimble (1601) is used for cleaning impurities in the mesh.

4. The multistage sewage treatment apparatus according to any one of claims 1 to 3, wherein: a waste residue elevator (10) is arranged at the top of the second filter plate (13), and the waste residue elevator (10) is connected with the first filter plate (9) in a matching way; the waste residue lifting machine (10) comprises a lifting machine body (1001), lifting plate teeth (1002) and a side protection plate (1003), rows of the lifting plate teeth (1002) are fixed on the outer surface of the lifting machine body (1001), and the side protection plate (1003) is fixed on the side portion of the lifting machine body (1001).

5. The multi-stage sewage treatment apparatus of claim 4, wherein: the bottom of the first filter plate (9) is provided with a limiting groove (901), and the limiting groove (901) is matched and connected with the lifting plate teeth (1002).

6. The multi-stage sewage treatment apparatus of claim 4, wherein: the top end of the waste residue elevator (10) penetrates through the second partition plate (12), and a solid waste collection chamber for containing solid waste is formed among the top end of the first partition plate (11), the side part of the second partition plate (12) and the treatment box body (6).

7. The multi-stage sewage treatment apparatus of claim 6, wherein: and a waste outlet (4) is formed in the top of the solid waste collecting chamber for containing the solid waste, and the top of the waste outlet (4) is in sliding connection with the second cover body (3).

8. The multi-stage sewage treatment apparatus of claim 7, wherein: the top of the treatment box body (6) is fixed with a first cover body (2), and the first cover body (2) and the second cover body (3) are both of rectangular structures with open tops.

9. The multistage sewage treatment apparatus according to any one of claims 1 to 3, wherein: the medicament adding mechanism (8) comprises a push rod (801), a rubber push block (802), a material collecting barrel (803), a manual control valve (804), a feeding pipe (805) and a spray head (806), wherein the material collecting barrel (803) is fixed on the outer side of the processing box body (6), and the interior of the material collecting barrel (803) is connected with the rubber push block (802) in a sliding manner; the top of the rubber push block (802) is fixed with the push rod (801); the bottom end of the material collecting barrel (803) is provided with two feeding pipes (805), the two feeding pipes (805) are respectively inserted into the oxidation chamber and the flocculation and precipitation chamber, and spray nozzles (806) are respectively arranged at the parts of the feeding pipes (805) inserted into the oxidation chamber and the flocculation and precipitation chamber; and manual control valves (804) are arranged on the outer sides of the feeding pipes (805).

10. The multistage sewage treatment apparatus according to any one of claims 1 to 3, wherein: a floating ball (15) is arranged in the flocculation settling chamber, and a water discharging and discharging pipe (1501) penetrates through the floating ball (15); the water discharging pipe (1501) extends outwards from the processing box body (6).