CN114477574A - A sewage treatment device capable of multi-stage filtration of sewage - Google Patents

Abstract

The invention discloses a sewage treatment device capable of performing multistage filtration on sewage, relates to the technical field of sewage treatment, and aims to solve the problems that a plurality of tank bodies are generally required to be arranged for conveying and guiding materials so as to complete multistage treatment measures, the whole device occupies a large area, and the treatment efficiency is low in the conventional sewage treatment device. Second grade filtering mechanism installs in the below of one-level filtering mechanism, and second grade filtering mechanism passes through ring flange and one-level filtering mechanism flange joint, tertiary filtering mechanism is provided with four, four tertiary filtering mechanism welded connection each other, and all sets up the below at second grade filtering mechanism, pass through first support and tertiary filtering mechanism fixed connection around the secondary filtering mechanism lower surface, tertiary filtering mechanism's below is through second support and temporary storage pond fixed connection, the inlet pipe is installed to one-level filtering mechanism's upper end.

Description

A sewage treatment device capable of multi-stage filtration of sewage

technical field

The invention relates to the technical field of sewage treatment, in particular to a sewage treatment device capable of multi-stage filtration of sewage.

Background technique

Sewage treatment process is a variety of economical, reasonable, scientific and effective process methods for urban domestic sewage and industrial wastewater. Sewage treatment is widely used in construction, agriculture, transportation, energy, petrochemical, environmental protection, urban landscape, medical, Catering and other fields. The urban sewage treatment process should be determined according to the treatment scale, water quality characteristics, environmental functions of the receiving water body, and local actual conditions and requirements, after comprehensive technical and economic comparison. For the multi-stage treatment of sewage, it is a process of advanced treatment of sewage step by step by relying on the primary, secondary and tertiary treatment processes. Among them, the primary treatment mainly removes suspended solid pollutants in the sewage, and the secondary treatment It mainly removes colloidal and dissolved organic pollutants in sewage, and the tertiary treatment mainly further treats refractory organic matter and bacteria.

However, the existing sewage multi-stage treatment device usually needs to set up multiple pools to convey materials to complete the multi-stage treatment measures. The overall occupied area of the device is large and the treatment efficiency is low.

Therefore, we propose a sewage treatment device that can filter sewage in multiple stages, so as to solve the problems mentioned above.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a sewage treatment device capable of multi-stage filtration of sewage, in order to solve the problem that the existing sewage multi-stage treatment device proposed in the above-mentioned background technology usually needs to set up multiple pools to convey materials to complete the multi-stage treatment. measures, the overall occupied area of the device is large, and the processing efficiency is low.

In order to achieve the above purpose, the present invention provides the following technical solutions: a sewage treatment device capable of multi-stage filtration of sewage, comprising a primary filtration mechanism, a secondary filtration mechanism, a tertiary filtration mechanism and a temporary storage pool, the secondary filtration The mechanism is installed below the primary filtering mechanism, and the secondary filtering mechanism is flanged to the primary filtering mechanism through the flange plate, the three filtering mechanisms are provided with four, and the four filtering mechanisms are welded to each other, They are all arranged below the secondary filter mechanism, the lower surface of the secondary filter mechanism is fixedly connected to the tertiary filter mechanism through the first bracket, and the lower part of the tertiary filter mechanism is fixedly connected to the temporary storage pool through the second bracket. , the upper end of the primary filter mechanism is provided with a feeding pipe, one side inside the primary filter mechanism is provided with a driving roller, and the other side inside the primary filter mechanism is provided with a driven roller, the The roller and the driven roller are connected by a grid belt before, a discharge port is provided on the outer wall of one side of the primary filter mechanism, and a micro-electrolysis filter material is installed inside the secondary filter mechanism. A ball screw is arranged inside one side of the material, and the ball screw is connected with the micro-electrolysis filter material through a sliding table. The motor, the lower surface of the secondary filtering mechanism is equipped with electric feeding valves, four electric feeding valves are provided, and the four electric feeding valves are respectively connected with the four tertiary filtering mechanisms, and the tertiary filtering A steel structure top plate frame is installed above the inside of the mechanism. The steel structure top plate frame is connected to the electric discharge valve through the feeding interface. A steel structure middle frame is arranged below the steel structure top plate frame. A steel structure bottom plate frame is arranged below, and the interior of the steel structure bottom plate frame is provided with filtering siding, and the lower end of the filtering sap material penetrates and extends to the outside of the three-stage filtering mechanism.

Preferably, a belt protection cover is installed on one side of the outer wall of the primary filter mechanism, and a first pulley is installed at one end inside the belt protection cover, and the first pulley is drivingly connected to the driving roller. A second pulley is installed at the other end, an asynchronous motor is installed at the rear end of the second pulley, and the output end of the asynchronous motor is connected to the second pulley in a driving manner. Both ends of the driven roller are rotatably connected with the outer wall of the primary filter mechanism through bearings.

Preferably, a blowing pipe is provided on one side of the belt protection cover, and one end of the blowing pipe penetrates and extends into the interior of the primary filter mechanism, one end of the blowing pipe is installed with an air guide joint, and the outer wall of the blowing pipe is A blowing nozzle is installed on the top, and there are seven blowing nozzles, and the seven blowing nozzles are equally spaced.

Preferably, a limiting frame is installed on the outside of one end of the discharge port, and a strap groove is provided on the outer wall of the discharge port.

Preferably, the inside of the other side of the micro-electrolysis filter material is provided with a guide post, and both ends of the guide post are fixedly connected to the inner wall of the secondary filter mechanism.

Preferably, a spray disc is arranged above the micro-electrolysis filter material, and the rear end of the spray disc extends to the outside of the secondary filter mechanism, and a turbidity detection probe is arranged below the micro-electrolysis filter material, and the turbidity The rear end of the degree detection probe is fixedly connected with the inner wall of the secondary filter mechanism.

Preferably, a second shunt pipe is installed at a middle position below the secondary filter mechanism, an intake manifold is installed at the middle position of the rear end of the second shunt pipe, and an air inlet is provided at one end of the intake manifold. , both ends of the second shunt pipe are installed with a first shunt pipe, and both ends of the first shunt pipe are respectively connected with four tertiary filter mechanisms, and one side of the upper surface of the tertiary filter mechanism is installed with Auto exhaust valve.

Preferably, the first shunt pipe and the second shunt pipe are both welded and connected to the upper surface of the tertiary filter mechanism through a hoop seat.

Preferably, the steel structure top frame, the steel structure middle frame and the steel structure bottom frame are welded and connected, the outer periphery of the steel structure middle frame is provided with inner grooves, and there are six inner grooves, so Waterproof and breathable membranes are installed on the middle frame of the steel structure and the outer wall of the inner groove.

Preferably, the lower surface inside the temporary storage pool is provided with an inclined bottom plate, and a drain port is installed on one side of the temporary storage pool.

Compared with the prior art, the beneficial effects of the present invention are:

1. In the present invention, the first-level filtering mechanism, the second-level filtering mechanism, the third-level filtering mechanism and the temporary storage pool are stacked and arranged, and the three-level filtering mechanism is set to four, which are evenly distributed under the second-level filtering mechanism. Compared with the traditional tank body, the structure of the three-stage filter can greatly reduce the floor area. At the same time, the three-stage filter mechanism can divert the waste water inside the two-stage filter mechanism and refine the filtration, thereby significantly improving the treatment efficiency and solving the problem. The existing multi-stage sewage treatment device usually needs to set up multiple pools to convey materials to complete the multi-stage treatment measures. The overall occupied area of the device is large and the treatment efficiency is low.

2. By setting a grid belt in the primary filter mechanism, and installing a spray pipe at one end of the grid belt, when the waste water enters the primary filter mechanism, the grid belt first isolates the solid particles in the water, and then removes the solid particles in the water. Under the driving action of the asynchronous motor, the impurities move to the discharge port through the horizontal transmission of the grille belt after isolation, and at the same time, the spray pipe is evenly sprayed towards the discharge port through the seven nozzles, and will adhere to the grille belt. The impurities are sprayed to the discharge port to realize the separation of particulate impurities. Compared with the traditional filter screen filtration, this method can automatically and continuously discharge materials, which is suitable for continuous treatment of sewage.

3. By setting the micro-electrolysis filter material in the secondary filter mechanism, the micro-electrolysis filter material is sintered at high temperature by the multi-element metal alloy fusion catalyst, which will generate a potential difference by itself. Chemical treatment, redox reaction occurs with multiple components in wastewater, so as to achieve the effect of purifying water quality. A ball screw is installed on the side of the micro-electrolysis filter material, which is driven by a stepping motor and guided by the guide column on the other side. The secondary filter mechanism moves up and down. Compared with the traditional fixed structure, this method significantly increases the contact range between the micro-electrolysis filter material and the water body, thereby improving the secondary purification efficiency of wastewater.

4. By setting the sapwood filter mechanism composed of steel structure frame in the tertiary filter mechanism, and at the same time setting the shunt pipe at the upper end to facilitate the introduction of external air, when the waste water enters the tertiary filter mechanism, it first falls into the steel structure frame. In the formed filter mechanism, the bottom of the frame is filter sapwood, and the filter sapwood is taken from pine or ginkgo tree, soaked in hot water for one hour, and then immersed in ethanol to dry. The sewage penetrates into the sapwood by gravity, and when it seeps out from the bottom of the sapwood, it can efficiently filter pollutants such as Escherichia coli and rotavirus. In order to ensure the filtration efficiency, six inner recesses are arranged around the middle frame of the steel structure The middle frame of the steel structure and the outer wall of the inner groove are equipped with waterproof and breathable membranes, and the intake manifold of the air guide structure is connected to the pump, so that the gasified plant extract is evenly introduced into four three In the filtration mechanism, the plant extract is made of the active ingredients extracted from plant roots, stems and flowers and fruits through the action of high-energy rays. It reacts with odor molecules in the state to produce odorless and non-toxic molecules, and achieves the effect of high-efficiency deodorization. At the same time, it can rely on the pressure of gas, cooperate with gravity sedimentation, speed up the speed of waste water passing through the bottom filtering sapwood, and further improve the filtration efficiency.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

2 is a schematic diagram of the internal structure of a primary filter mechanism and a secondary filter mechanism of the present invention;

Fig. 3 is the overall top view structure schematic diagram of the three-stage filtering mechanism of the present invention;

4 is a schematic diagram of the partial internal structure of the three-stage filtering mechanism of the present invention;

5 is a schematic diagram of the connection structure between the filter sapwood of the present invention and the middle frame of the steel structure;

6 is a schematic diagram of the partial structure of the injection pipe of the present invention;

7 is a schematic diagram of the partial structure of the temporary storage pool of the present invention;

Fig. 8 is the enlarged schematic diagram of the structure at A place of the present invention;

In the figure: 1. Primary filtering mechanism; 2. Secondary filtering mechanism; 3. Tertiary filtering mechanism; 4. Temporary storage pool; 5. Flange plate; 6. First bracket; 7. Second bracket; 8. Feeding pipe; 9. Belt protection cover; 10. Blow pipe; 11. Air guide joint; 12. Electric blanking valve; 13. First shunt pipe; 14. Hoop seat; 15. Intake manifold; 16. Inlet Air port; 17, automatic exhaust valve; 18, water outlet; 19, driven roller; 20, bearing; 21, driving roller; 22, grille belt; 23, first pulley; 24, second pulley; 25, Asynchronous motor; 26, drive belt; 27, discharge port; 271, limit frame; 272, strap groove; 28, micro-electrolysis filter material; 29, ball screw; 30, slide table; 31, stepper motor ; 32, guide column; 33, turbidity detection probe; 34, second shunt pipe; 35, steel structure bottom frame; 36, steel structure middle frame; 37, inner groove; 38, filter sapwood; 39, waterproof and breathable Membrane; 40, steel structure top plate frame; 41, feeding interface; 42, spray nozzle; 43, inclined bottom plate; 44, spray plate.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments.

1-8, an embodiment provided by the present invention: a sewage treatment device capable of multi-stage filtration of sewage, including a first-stage filter mechanism 1, a second-stage filter mechanism 2, a third-stage filter mechanism 3 and a temporary storage mechanism Pool 4, the secondary filtering mechanism 2 is installed below the primary filtering mechanism 1, and the secondary filtering mechanism 2 is flanged to the primary filtering mechanism 1 through the flange plate 5, and the tertiary filtering mechanism 3 is provided with four, four The three tertiary filter mechanisms 3 are welded and connected to each other, and all are arranged below the secondary filtration mechanism 2. The periphery of the lower surface of the secondary filtration mechanism 2 is fixedly connected to the tertiary filter mechanism 3 through the first bracket 6. The tertiary filter mechanism 3 The lower part of the filter is fixedly connected to the temporary storage pool 4 through the second bracket 7, the upper end of the primary filter mechanism 1 is provided with a feeding pipe 8, the inner side of the primary filter mechanism 1 is provided with a driving roller 21, and the interior of the primary filter mechanism 1 is provided with a driving roller 21. The other side of the filter is provided with a driven roller 19. The driving roller 21 and the driven roller 19 are connected by a grid belt 22 before transmission. The outer wall of one side of the primary filter mechanism 1 is provided with a discharge port 27. The secondary filter mechanism 2 A micro-electrolysis filter material 28 is installed inside, and a ball screw 29 is provided on one side of the micro-electrolysis filter material 28. The ball screw 29 is connected to the micro-electrolysis filter material 28 through the sliding table 30. The lower end of the ball screw 29 penetrates It extends to the outside of the secondary filter mechanism 2, and is equipped with a stepping motor 31. The lower surface of the secondary filter mechanism 2 is equipped with an electric feeding valve 12. There are four electric feeding valves 12, and four electric feeding valves are installed. The feed valve 12 is connected with the four tertiary filter mechanisms 3 respectively. A steel structure roof frame 40 is installed above the interior of the tertiary filter mechanism 3. The steel structure roof frame 40 is connected to the electric feeding valve 12 through the feeding interface 41. A steel structure middle frame 36 is arranged below the structural top plate frame 40, a steel structure bottom plate frame 35 is arranged below the steel structure middle frame 36, and a filter side material 38 is arranged inside the steel structure bottom plate frame 35, and the lower end of the filter side material 38 is provided. It runs through and extends to the outside of the tertiary filter mechanism 3 .

Further, a belt protection cover 9 is installed on one side of the outer wall of the primary filter mechanism 1, and a first pulley 23 is installed at one end inside the belt protection cover 9. A second pulley 24 is installed at the other end, an asynchronous motor 25 is installed at the rear end of the second pulley 24, and the output end of the asynchronous motor 25 is connected to the second pulley 24 in a driving manner. Drive connection, the two ends of the driven roller 19 are rotatably connected to the outer wall of the primary filter mechanism 1 through the bearing 20. When the sewage enters from the feed pipe 8 of the primary filter mechanism 1, the solids in the water are first isolated by the grid belt 22. For particulate impurities, the grid belt 22 is driven by the asynchronous motor 25. After isolation, the impurities are moved to the discharge port 27 and discharged through the lateral transmission action of the grid belt 22.

Further, a blowing pipe 10 is provided on one side of the belt protection cover 9 , and one end of the blowing pipe 10 penetrates and extends into the interior of the primary filter mechanism 1 . There are spray nozzles 42 installed on it, and there are seven spray nozzles 42, and the seven spray nozzles 42 are equally spaced. The inside of the belt 22 is evenly sprayed in the direction of the discharge port 27 to avoid the occurrence of particle impurities adhering to the grid belt 22 .

Further, a limiting frame 271 is installed on the outside of one end of the discharge port 27, and a strap groove 272 is set on the outer wall of the discharge port 27. The discharge port 27 can be sleeved with a dust collecting cloth bag, and the strap and the discharge port are used for 27. The strap grooves 272 on the outer wall are tied and fixed, which facilitates the collection and cleaning of solid impurities in the sewage.

Further, the inside of the other side of the micro-electrolysis filter material 28 is provided with a guide post 32, and both ends of the guide post 32 are fixedly connected to the inner wall of the secondary filter mechanism 2. The micro-electrolysis filter material 28 is made of multi-element metal alloy fusion catalyst through 1300 It is sintered at high temperature, and it will generate a potential difference. As a primary battery, wastewater is used as an electrolyte, and it is electrochemically treated, and redox reactions occur with multiple components in wastewater, so as to achieve the effect of purifying water quality. The ball screw 29 is installed on the side of the 28, which is driven by the stepping motor 31 and guided by the guide column 32 on the other side, and can move up and down in the secondary filter mechanism 2, which significantly improves the contact range between the micro-electrolysis filter material 28 and the water body. , thereby improving the electrolysis efficiency.

Further, a spray disc 44 is arranged above the micro-electrolysis filter material 28, and the rear end of the spray disc 44 extends to the outside of the secondary filter mechanism 2, and a turbidity detection probe 33 is arranged below the micro-electrolysis filter material 28, and The rear end of the turbidity detection probe 33 is fixedly connected to the inner wall of the secondary filter mechanism 2, and the spray disc 44 is used to evenly spray the micro-electrolysis reagent to the micro-electrolysis filter material 28 before use, activate the filler, and ensure its use effect, and The turbidity detection probe 33 can detect the state of the secondary treated sewage at all times. After the detection meets the standard, it sends a signal to the electric discharge valve 12, which is shunted and discharged into the four tertiary filter mechanisms 3. The turbidity detection probe The 33 model is MIK-PTU100.

Further, a second shunt pipe 34 is provided at the middle position below the secondary filter mechanism 2, an intake manifold 15 is installed at the middle position of the rear end of the second shunt pipe 34, and one end of the intake manifold 15 is provided with an air inlet 16, Both ends of the second shunt pipe 34 are installed with the first shunt pipe 13 , and the two ends of the first shunt pipe 13 are respectively connected with the four tertiary filter mechanisms 3 , and one side of the upper surface of the tertiary filter mechanism 3 is installed with The automatic exhaust valve 17 and the intake manifold 15 are used to connect the pumping mechanism, so that the gasified plant extract is evenly introduced into the four tertiary filter mechanisms 3 along the shunt pipe. The plant extract is composed of plant roots, stems and flowers and fruits. The active ingredients extracted from the water are made of high-energy rays. When they come into contact with the odor produced by wastewater, they can react with odor molecules at room temperature to produce odorless and non-toxic molecules, and achieve the effect of high-efficiency deodorization. Relying on the pressure of the gas, combined with gravity sedimentation, the speed of the waste water passing through the filter siding 38 is accelerated, and the filtering efficiency is further improved. The setting of the automatic exhaust valve 17 can avoid the occurrence of excessive internal pressure.

Further, the first shunt pipe 13 and the second shunt pipe 34 are welded and connected to the upper surface of the tertiary filter mechanism 3 through the hoop seat 14. The setting of the hoop seat 14 improves the first shunt pipe 13 and the second shunt pipe. 34 Stability when conducting air.

Further, the steel structure top frame 40, the steel structure middle frame 36 and the steel structure bottom frame 35 are welded and connected, the outer periphery of the steel structure middle frame 36 is provided with inner grooves 37, and the inner grooves 37 are provided with six, The outer wall of the steel structure middle frame 36 and the inner groove 37 is equipped with a waterproof and breathable membrane 39. The waterproof and breathable membrane 39 can ensure gas penetration while preventing waste water from overflowing from the side of the frame, and the setting of the inner groove 37 is enlarged. The contact area between the gasified plant extract and the sewage is reduced, making the odor purification more efficient and thorough.

Further, the lower surface of the temporary storage tank 4 is provided with an inclined bottom plate 43, and one side of the temporary storage tank 4 is installed with the drain port 18. The inclined bottom plate 43 can concentrate water on the side of the drain port 18 for easy discharge.

Working principle: Before use, first set a dust collecting cloth bag at the discharge port 27, and then use the spray disc 44 to evenly spray the micro-electrolysis reagent to the micro-electrolysis filter material 28 to activate the filler to ensure the subsequent use effect. Entering through the feeding pipe 8 of the primary filter mechanism 1, the solid particles in the water are first isolated by the grid belt 22. The grid belt 22 is driven by the asynchronous motor 25. After isolation, the impurities pass through the horizontal transmission of the grid belt 22. Moving to the discharge port 27, the grid belt 22 is provided with a spray pipe 10 near the discharge port 27 side. The impurities on the grid belt 22 are sprayed to the discharge port 27 to realize the separation of particulate impurities, while the waste water falls into the secondary filter mechanism 2 under the action of gravity, and the secondary filter mechanism 2 is equipped with a micro-electrolysis filter material 28 , the micro-electrolysis filter material 28 itself will generate a potential difference. As a primary battery, wastewater is used as the electrolyte to perform electrochemical treatment on it. A ball screw 29 is installed on its side, which is driven by a stepping motor 31 and cooperates with the guide on the other side. When the column 32 is guided, it can move up and down in the secondary filter mechanism 2, which significantly increases the contact range between the micro-electrolysis filter material 28 and the water body, thereby improving the electrolysis efficiency. When the turbidity detection probe 33 detects the waste water in the secondary filter mechanism 2 After meeting the standard, a signal will be sent to the electric feeding valve 12, and it will be shunted and discharged into the four tertiary filter mechanisms 3. After completion, the electric feeding valve 12 will be closed again, and the waste water entering the tertiary filtration mechanism 3 will fall into the steel filter. In the filtering mechanism formed by the structural frame, the bottom of the frame is the filtering sapwood 38. The filtering sapwood is taken from pine or ginkgo tree, soaked in hot water for one hour, and then immersed in ethanol to dry. Connection, when the sewage penetrates into the sapwood by gravity and seeps out from the bottom of the sapwood, it can efficiently filter pollutants such as Escherichia coli and rotavirus. Six inner grooves 37, and the steel structure middle frame 36 and the outer wall of the inner groove 37 are equipped with waterproof and breathable membranes 39, and an air guide structure is provided on the tertiary filter mechanism 3. The air intake manifold 15 of the air guide structure It is connected to the pump, so that the gasified plant extract is evenly introduced into the four tertiary filter mechanisms 3 along the shunt pipe. The plant extract is obtained from the active ingredients extracted from plant roots, stems and flowers and fruits through the action of high-energy rays. , it can pass through the waterproof breathable membrane 39 when it comes into contact with the odor generated in the wastewater in a large area, and reacts with the odor molecules at room temperature to produce odorless and non-toxic molecules to achieve the effect of efficient deodorization. At the same time, it can rely on the gas The action of pressure, combined with gravity settling, accelerates the speed of waste water passing through the bottom filter sap material 38, further improving the filtration efficiency.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the invention is to be defined by the appended claims rather than the foregoing description, which are therefore intended to fall within the scope of the claims. All changes within the meaning and scope of the equivalents of , are included in the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

Claims (10)

1. The utility model provides an ability is to sewage treatment plant of sewage multi-stage filtration, includes one-level filtering mechanism (1), second grade filtering mechanism (2), tertiary filtering mechanism (3) and temporary storage pond (4), its characterized in that: the secondary filtering mechanism (2) is arranged below the primary filtering mechanism (1), the secondary filtering mechanism (2) is connected with the primary filtering mechanism (1) through flanges (5), the three-level filtering mechanism (3) is provided with four, four three-level filtering mechanisms (3) are welded with each other and are arranged below the secondary filtering mechanism (2), the periphery of the lower surface of the secondary filtering mechanism (2) is fixedly connected with the three-level filtering mechanism (3) through a first support (6), the below of the three-level filtering mechanism (3) is fixedly connected with the temporary storage pool (4) through a second support (7), an inlet pipe (8) is arranged at the upper end of the primary filtering mechanism (1), a driving roller (21) is arranged on one side of the interior of the primary filtering mechanism (1), and a driven roller (19) is arranged on the other side of the interior of the primary filtering mechanism (1), the device is characterized in that the driving roller (21) and the driven roller (19) are connected in advance through a grid belt (22) in a transmission mode, a discharge hole (27) is formed in the outer wall of one side of the primary filtering mechanism (1), a micro-electrolysis filtering material (28) is installed inside the secondary filtering mechanism (2), a ball screw (29) is arranged inside one side of the micro-electrolysis filtering material (28), the ball screw (29) is connected with the micro-electrolysis filtering material (28) in a transmission mode through a sliding table (30), the lower end of the ball screw (29) penetrates through and extends to the outside of the secondary filtering mechanism (2), a stepping motor (31) is installed, an electric blanking valve (12) is installed on the lower surface of the secondary filtering mechanism (2), the four electric blanking valves (12) are arranged, the four electric blanking valves (12) are respectively communicated with the four tertiary filtering mechanisms (3), a steel structure jacking frame (40) is installed above the inside of the tertiary filtering mechanism (3), steel construction ejector plate frame (40) are connected with electronic unloading valve (12) through feeding interface (41), the below of steel construction ejector plate frame (40) is provided with steel construction middle part frame (36), the below of steel construction middle part frame (36) is provided with steel construction bottom plate frame (35), the inside of steel construction bottom plate frame (35) is provided with filters rim charge (38), and filters the outside that the lower extreme of rim charge (38) runs through and extend to tertiary filter mechanism (3).

2. The sewage treatment device capable of performing multistage filtration on sewage according to claim 1, wherein: belt protection cover (9) are installed to one side of one-level filtering mechanism (1) outer wall, first belt pulley (23) are installed to the inside one end of belt protection cover (9), and first belt pulley (23) are connected with drive roll (21) transmission, second belt pulley (24) are installed to the inside other end of belt protection cover (9), asynchronous machine (25) are installed to the rear end of second belt pulley (24), and the output of asynchronous machine (25) is connected with second belt pulley (24) transmission, first belt pulley (23) are connected with second belt pulley (24) transmission through driving belt (26), the both ends of driven voller (19) are passed through bearing (20) and are connected with one-level filtering mechanism (1) outer wall rotation.

3. The sewage treatment device capable of performing multistage filtration on sewage according to claim 2, wherein: one side of the belt protection cover (9) is provided with an injection pipe (10), one end of the injection pipe (10) penetrates through and extends into the primary filtering mechanism (1), one end of the injection pipe (10) is provided with an air guide joint (11), the outer wall of the injection pipe (10) is provided with seven injection nozzles (42), and the seven injection nozzles (42) are distributed at equal intervals.

4. The sewage treatment device capable of performing multistage filtration on sewage according to claim 1, wherein: the external mounting of bin outlet (27) one end has spacing frame (271), be provided with bandage recess (272) on the outer wall of bin outlet (27).

5. The sewage treatment device capable of performing multistage filtration on sewage according to claim 1, wherein: and a guide post (32) is arranged inside the other side of the micro-electrolysis filter material (28), and two ends of the guide post (32) are fixedly connected with the inner wall of the secondary filtering mechanism (2).

6. The sewage treatment device capable of performing multistage filtration on sewage according to claim 1, wherein: the device is characterized in that a spray disc (44) is arranged above the micro-electrolysis filter material (28), the rear end of the spray disc (44) extends to the outside of the secondary filter mechanism (2), a turbidity detection probe (33) is arranged below the micro-electrolysis filter material (28), and the rear end of the turbidity detection probe (33) is fixedly connected with the inner wall of the secondary filter mechanism (2).

7. The sewage treatment device capable of performing multistage filtration on sewage according to claim 1, wherein: intermediate position department of second grade filtering mechanism (2) below is provided with second shunt tube (34), the intermediate position department of second shunt tube (34) rear end installs air intake manifold (15), the one end of air intake manifold (15) is provided with air inlet (16), first shunt tube (13) are all installed at the both ends of second shunt tube (34), and the both ends of first shunt tube (13) are linked together with four tertiary filtering mechanism (3) respectively, automatic exhaust valve (17) are installed to one side of tertiary filtering mechanism (3) upper surface.

8. The sewage treatment apparatus of claim 7, wherein the sewage treatment apparatus comprises: and the first shunt pipe (13) and the second shunt pipe (34) are connected with the upper surface of the third-stage filtering mechanism (3) through the hoop seat (14) in a welding manner.

9. The sewage treatment device capable of performing multistage filtration on sewage according to claim 1, wherein: welded connection between steel construction roof frame (40), steel construction middle part frame (36) and the steel construction bottom plate frame (35), the outside of steel construction middle part frame (36) all is provided with inner groovy (37) all around, and inner groovy (37) are provided with six, all install waterproof ventilated membrane (39) on the outer wall of steel construction middle part frame (36) and inner groovy (37).

10. The sewage treatment device capable of performing multistage filtration on sewage according to claim 1, wherein: the lower surface of the interior of the temporary storage pool (4) is provided with an inclined bottom plate (43), and one side of the temporary storage pool (4) is provided with a water outlet (18).

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