CN111747576A

CN111747576A - Domestic wastewater environment-friendly treatment device and use method thereof

Info

Publication number: CN111747576A
Application number: CN202010701652.3A
Authority: CN
Inventors: 张增球; 卢春秀; 张思成
Original assignee: Shaoxing Shengtu Environmental Protection Technology Co ltd
Current assignee: Shaoxing Shengtu Environmental Protection Technology Co ltd
Priority date: 2020-07-21
Filing date: 2020-07-21
Publication date: 2020-10-09

Abstract

The invention discloses an environment-friendly domestic wastewater treatment device and a using method thereof, and belongs to the technical field of wastewater treatment. An environment-friendly domestic wastewater treatment device comprises a tank body, wherein the inner wall of the tank body is respectively connected with a conical bottom plate and a fixed plate, a first cavity is arranged between the conical bottom plate and the inner wall of the top of the tank body, a second cavity is arranged between the fixed plate and the inner wall of the bottom of the tank body, a flow guide pipe is connected between the first cavity and the second cavity, the outer wall of the flow guide pipe is connected with a first valve, the outer wall of the first cavity is respectively connected with a liquid inlet pipe and a chemical feeding port, and the outer wall of the second cavity is; the pressing plate is used for extruding the fixed seat, so that larger garbage in the wastewater is crushed, the wastewater in the wastewater is discharged, the efficient treatment of the wastewater is improved, the main rotating shaft is rotated in the downward moving process of the pressing plate, the stirring efficiency of the medicament and the wastewater is accelerated, the medicament is fully stirred, and the purification treatment effect of the wastewater is greatly improved.

Description

Domestic wastewater environment-friendly treatment device and use method thereof

Technical Field

The invention relates to the technical field of wastewater treatment, in particular to an environment-friendly domestic wastewater treatment device and a using method thereof.

Background

The waste water is a general term of water and runoff rainwater discharged in the process of activities of residents, and comprises domestic sewage, industrial waste water and other water-free water flowing into a drainage pipe canal from initial rainwater.

The Chinese patent with the patent number of CN201710338997.5 in the prior art discloses an environment-friendly wastewater treatment device, which comprises a purifying box, wherein one third of the top of the right side of the purifying box is closed, two thirds of the left side of the purifying box is provided with a screen box, the left side of the purifying box is fixedly welded with a flow baffle below the screen box, the inside of the purifying box is provided with a filter screen, one side of the purifying box below the flow baffle above the filter screen is provided with a chlorine interface, the lower half part of the purifying box is provided with an activated carbon layer below the filter screen, the lower part of the activated carbon layer is provided with a reverse osmosis membrane, the right side of the bottom of the purifying box is connected with a water storage tank through a pipeline, and the water storage tank is connected with one end of a return pipe. Waste water in plastic bags, pop cans and other articles can be blocked, so that the waste water in the articles cannot be effectively treated.

In the prior art, a Chinese patent with the patent number of CN201710299532.3 discloses a wastewater treatment environment-friendly device, which comprises a first water tank and a second water tank, wherein the first water tank is positioned on the left side of the second water tank, and a support plate is fixedly connected to the right side of the top of the first water tank; however, the device still has defects in the actual use process, and since the domestic sewage contains large-area solid waste, the solid waste can not be adsorbed only by the adsorption sheet, but the adsorption effect of the adsorption sheet is affected by the solid waste.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides an environment-friendly domestic wastewater treatment device and a using method thereof.

In order to achieve the purpose, the invention adopts the following technical scheme:

an environment-friendly domestic wastewater treatment device comprises a tank body, wherein the inner wall of the tank body is respectively connected with a conical bottom plate and a fixed plate, a first cavity is arranged between the conical bottom plate and the inner wall of the top of the tank body, a second cavity is arranged between the fixed plate and the inner wall of the bottom of the tank body, a flow guide pipe is connected between the first cavity and the second cavity, the outer wall of the flow guide pipe is connected with a first valve, the outer wall of the first cavity is respectively connected with a liquid inlet pipe and a chemical feeding port, the outer wall of the second cavity is connected with a liquid outlet pipe, the outer wall of the tank body is connected with an air cylinder, the output end of the air cylinder is connected with a power rod, one end of the power rod, far away from the air cylinder, penetrates through the tank body and is connected with a pressing plate, the pressing plate is slidably connected, first cavity inner wall is connected with the sleeve pipe, rotate through the bearing in the sleeve pipe and be connected with main axis of rotation, main axis of rotation outer wall has set firmly the external screw thread, main axis of rotation passes through external screw thread threaded connection in the fixing base, just main axis of rotation outer wall still is connected with first stirring leaf.

Preferably, the bottom of the pressure plate is provided with uniformly distributed conical teeth.

Preferably, the inner walls of the two sides of the tank body are provided with sliding grooves, two sliding blocks and two steel wire meshes are connected between the sliding blocks in a sliding mode, the bottom of each sliding block is connected with a first elastic element, and one end, far away from the sliding blocks, of each first elastic element is connected to the bottom wall of each sliding groove.

Preferably, main axis of rotation outer wall is connected with first gear, the equal meshing of first gear both sides outer wall is connected with the second gear, second gear inner wall is connected with vice axis of rotation, vice axis of rotation rotates the diapire of connection at the fixing base, just vice axis of rotation outer wall is connected with the second and stirs the leaf.

Preferably, the first stirring blade and the second stirring blade are obliquely arranged inside the tank body, and the inclination angle is sixty degrees.

Preferably, the bottom of the main rotating shaft is provided with air dispersing holes, the inner wall of the main rotating shaft is connected with a second elastic element, one end, away from the bottom wall of the main rotating shaft, of the second elastic element is connected with a piston, the outer wall of the piston is connected with a push rod, one end, away from the piston, of the push rod is connected with a moving block, the moving block is rotatably connected in a sleeve, the inner wall of the sleeve is connected with a guide block, and the outer wall of the moving block is provided with a guide groove matched with the guide block in.

Preferably, the inner wall of the main rotating shaft is connected with a positioning plate, and the outer wall of the push rod is provided with a groove matched with the positioning plate in a chiseled mode.

Preferably, the outer walls of the liquid inlet pipe and the liquid outlet pipe are both connected with second valves.

Preferably, the inner wall of the second cavity is sequentially connected with a first filter screen plate, a second filter screen plate and an active carbon filter screen from top to bottom, and the aperture of the first filter screen plate is larger than that of the second filter screen plate.

The invention also discloses a using method of the domestic wastewater environment-friendly treatment device, which comprises the following steps:

s1: the domestic wastewater is discharged into a first cavity inside the tank body through a liquid inlet pipe, the wastewater falls on a steel wire mesh, large-area solid garbage is blocked, the operation of a cylinder is controlled, the output end of the cylinder drives a power rod to extend, and then the power rod drives a pressing plate 12 to move downwards, so that the pressing plate extrudes the steel wire mesh, the steel wire mesh drives a sliding block to move downwards in a sliding groove and gradually approaches a fixed seat, when the steel wire mesh is contacted with the fixed seat, the pressing plate acts on the fixed seat, conical teeth at the bottom of the pressing plate crush the large-area fixed garbage, and the wastewater inside the pressing plate is discharged;

s2: the waste water passes through the small hole of the fixing seat and falls into the lower half part of the first cavity, at the moment, the medicine can be added from the medicine adding port, so that the medicine is mixed with the waste water, and in the process that the pressing plate moves downwards, as the main rotating shaft is in threaded connection with the fixing seat through the external threads, the main rotating shaft can rotate and drive the first stirring blade to rotate, so that the first stirring blade accelerates the mixing rate of the medicine and the waste water, in the process, the first gear and the second gear on the outer side of the main rotating shaft are meshed, and the auxiliary rotating shaft drives the second stirring blade to reversely stir the waste water and the medicine outside the second cavity;

s3: the first valve of control is opened, inside waste water after the medicament reaction flowed into the second cavity from the honeycomb duct, the inside first filter screen board that is provided with of second cavity, second filter screen board and active carbon filter screen, filter tiny particulate matters such as silt of aquatic through first filter screen board and second filter screen board, then filter the aquatic chlorine residue through the active carbon filter screen, the organic matter, the suspended solid, inorganic ion, bacterium, virus, waste water reaches emission standard this moment, can discharge or store through going out the liquid pipe.

Compared with the prior art, the invention provides an environment-friendly domestic wastewater treatment device and a using method thereof, and the environment-friendly domestic wastewater treatment device has the following beneficial effects:

1. this domestic waste water environmental protection processing apparatus and application method, through the operation of control cylinder, make the output of cylinder pass through the power pole and drive the clamp plate and move down, and then make the clamp plate carry out the breakage to the solid refuse thing of locating between clamp plate and fixing base, make remaining waste water among the solid refuse thing discharged, improve the high-efficient processing to waste water, and the clamp plate is at the in-process that moves down, because main axis of rotation passes through external screw thread and fixing base threaded connection, main axis of rotation can produce the rotation, and then make main axis of rotation drive first stirring leaf at the pivoted in-process and rotate, accelerate the stirring efficiency of medicament and waste water, make the medicament obtain abundant stirring, thereby the purification treatment effect of waste water has been promoted greatly.

2. This domestic waste water environmental protection processing apparatus and application method thereof through being provided with the wire net in the top of fixing base, can make the clamp plate when carrying out the breakage to solid waste thing, avoids the aperture of fixing base to be plugged up to the waste thing after smashing, hinders the circulation of waste water, and when the clamp plate shifts up, first elastic element drives the wire net and upwards plays, and then makes the shake of the crushing granule on the wire net, avoids it to block up the aperture.

3. According to the domestic wastewater environment-friendly treatment device and the use method thereof, the first gear is meshed with the second gear, so that the second gear drives the auxiliary rotating shaft to rotate, the rotating direction of the auxiliary rotating shaft is opposite to that of the main rotating shaft, wastewater in the first cavity rotates towards two directions, then the medicament is fully reacted with the wastewater, and the reaction rate of the medicament is improved.

4. This domestic waste water environmental protection processing apparatus and application method, main axis of rotation passes through the bearing and rotates at the cover intraductally, and main axis of rotation passes through the locating plate and drives the synchronous rotation of push rod, and at push rod pivoted in-process, the movable block at push rod top reciprocates along with the guide block at the cover intraductally because of the guide way, and then makes the inside rivers of piston extrusion main axis of rotation, make the waste water of main axis of rotation bottom outwards extrude outside rivers through the gas pocket that looses, and then make probably sink the medicament on the tapered bottom plate and turn over and gush, further make medicament and waste water fully react.

5. This domestic waste water environmental protection processing apparatus and application method filters tiny particulate matters such as silt in aqueous through first filter screen board and second filter screen board, then filters surplus chlorine, organic matter, suspended solid, inorganic ion, bacterium, virus through the active carbon filter screen, and waste water reaches emission standard this moment, can discharge or store through the play liquid pipe.

Drawings

FIG. 1 is a schematic structural view of an environmental protection treatment apparatus for domestic wastewater according to the present invention;

FIG. 2 is a schematic sectional view of an environmental protection apparatus for domestic wastewater according to the present invention

FIG. 3 is a schematic sectional view of an environmental protection apparatus for domestic wastewater according to the present invention;

FIG. 4 is a schematic structural view of a main rotating shaft and a sleeve of the domestic wastewater environmental protection treatment device provided by the invention;

FIG. 5 is a schematic cross-sectional view of a main rotating shaft of an environmental protection apparatus for domestic wastewater according to the present invention;

FIG. 6 is a schematic structural view of part A of FIG. 2 of an apparatus for environmentally treating domestic wastewater according to the present invention;

FIG. 7 is a schematic structural view of part B of FIG. 2 of an apparatus for environmentally treating domestic wastewater according to the present invention.

In the figure: 1. a tank body; 2. a tapered bottom plate; 3. a fixing plate; 4. a first cavity; 5. a second cavity; 501. a first filter screen plate; 502. a second filter screen plate; 503. an active carbon filter screen; 6. a flow guide pipe; 601. a first valve; 7. a liquid inlet pipe; 8. a medicine adding port; 9. a liquid outlet pipe; 10. a cylinder; 11. a power rod; 12. pressing a plate; 121. a tapered tooth; 13. a fixed seat; 14. a sleeve; 141. a guide block; 15. a main rotating shaft; 151. an external thread; 152. a first stirring blade; 153. a first gear; 154. a second elastic element; 155. a piston; 156. a push rod; 1561. a groove; 157. a moving block; 1571. a guide groove; 158. air diffusing holes; 159. positioning a plate; 16. a chute; 161. a slider; 162. a first elastic element; 163. steel wire mesh; 17. a second gear; 171. an auxiliary rotating shaft; 172. a second stirring blade; 18. a second valve.

Detailed Description

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

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example 1:

referring to fig. 1-3, an environment-friendly domestic wastewater treatment device comprises a tank body 1, wherein the inner wall of the tank body 1 is respectively connected with a conical bottom plate 2 and a fixed plate 3, a first cavity 4 is arranged between the conical bottom plate 2 and the inner wall of the top of the tank body 1, a second cavity 5 is arranged between the fixed plate 3 and the inner wall of the bottom of the tank body 1, a flow guide pipe 6 is connected between the first cavity 4 and the second cavity 5, the outer wall of the flow guide pipe 6 is connected with a first valve 601, the outer wall of the first cavity 4 is respectively connected with a liquid inlet pipe 7 and a drug feeding port 8, the outer wall of the second cavity 5 is connected with a liquid outlet pipe 9, the outer wall of the tank body 1 is connected with an air cylinder 10, the output end of the air cylinder 10 is connected with a power rod 11, one end of the power rod 11, which is far away from the air cylinder 10, pressing plate 12 offsets with the activity of fixing base 13, 4 inner wall connections of first cavity have sleeve pipe 14, it is connected with main axis of rotation 15 to rotate through the bearing in the sleeve pipe 14, 15 outer walls of main axis of rotation have set firmly external screw thread 151, main axis of rotation 15 passes through external screw thread 151 threaded connection in fixing base 13, and 15 outer walls of main axis of rotation still are connected with first stirring leaf 152, the bottom of pressing plate 12 is provided with evenly distributed's toper tooth 121, feed liquor pipe 7 and drain pipe 9 outer wall all are connected with second valve 18, 5 inner walls of second cavity have from last to having connected gradually first filter screen plate 501 down, second filter screen plate 502 and active carbon filter screen 503, and the aperture of first filter screen plate 501 is greater than the aperture of second filter screen plate 502.

Domestic wastewater is discharged into the first cavity 4 in the tank body 1 through the liquid inlet pipe 7, large-area solid garbage is blocked by the fixed seat 13, the operation of the air cylinder 10 is controlled, the output end of the air cylinder 10 drives the power rod 11 to extend, and further the power rod 11 drives the pressing plate 12 to move downwards, so that the pressing plate 12 extrudes the solid garbage, the pressing plate 12 applies force to the fixed seat 13, the conical teeth 121 at the bottom of the pressing plate 12 crush the large-area fixed garbage, and further the wastewater in the pressing plate is discharged, the wastewater passes through the small hole of the fixed seat 13 and falls into the lower half part of the first cavity 4, at the moment, the drug can be added from the drug adding port 8, so that the drug is mixed with the wastewater, and in the downward moving process of the pressing plate 12, as the main rotating shaft 15 is in threaded connection with the fixed seat 13 through the external thread 151, the main rotating shaft 15 rotates and drives the first stirring, after waste water and medicament reacted, control first valve 601 and open, waste water flows into inside 5 second cavities from honeycomb duct 6, inside 5 second cavities is provided with first filter screen 501, second filter screen 502 and active carbon filter screen 503, filter tiny particulate matters such as silt in aquatic through first filter screen 501 and second filter screen 502, then filter the aquatic chlorine residue through active carbon filter screen 503, the organic matter, the suspended solid, inorganic ion, the bacterium, the virus, waste water reaches emission standard this moment, can discharge or store through drain pipe 9.

Example 2:

referring to fig. 1, 2, 3, 6 and 7, an environment-friendly domestic wastewater treatment device is substantially the same as that of embodiment 1, further, sliding grooves 16 are drilled in inner walls of two sides of a tank body 1, sliding blocks 161 are connected to inner walls of the two sliding grooves 16 in a sliding manner, a steel wire mesh 163 is connected between the two sliding blocks 161, a first elastic element 162 is connected to the bottom of each sliding block 161, and one end, far away from the sliding block 161, of the first elastic element 162 is connected to the bottom wall of the sliding groove 16; be provided with wire net 163 through the top at fixing base 13, make wire net 163 block the granule after smashing, can make clamp plate 12 when carrying out the breakage to solid waste thing, avoid the rubbish thing after smashing to plug up the aperture of fixing base 13, obstruct the circulation of waste water, and when clamp plate 12 shifts up, first elastic element 162 drives wire net 163 and upwards plays, and then make the granule shake after smashing on the wire net 163, avoid the particulate matter to block up wire net 163 aperture, influence the flow of rubbish thing exhaust waste water.

The outer wall of the main rotating shaft 15 is connected with a first gear 153, the outer walls of two sides of the first gear 153 are respectively connected with a second gear 17 in a meshing manner, the inner wall of the second gear 17 is connected with an auxiliary rotating shaft 171, the auxiliary rotating shaft 171 is rotatably connected to the bottom wall of the fixed seat 13, the outer wall of the auxiliary rotating shaft 171 is connected with a second stirring blade 172, and the first stirring blade 152 and the second stirring blade 172 are obliquely arranged in the tank body 1, and the inclination angle is sixty degrees; through first gear 153 and the meshing of second gear 17, make second gear 17 drive counter shaft 171 and rotate, and then make counter shaft 171's rotation direction opposite with main axis of rotation 15's rotation direction, make the waste water in the first cavity 4 rotate to two directions, and then make medicament and waste water fully react, improve the reaction rate of medicament, and first stirring leaf 152 and the slope of second stirring leaf 172 set up, can improve the stirring effect.

Example 3:

referring to fig. 1-7, an environment-friendly domestic wastewater treatment device is substantially the same as that in embodiment 1, further, a bottom of the main rotating shaft 15 is perforated with an air dispersing hole 158, an inner wall of the main rotating shaft 15 is connected with a second elastic element 154, one end of the second elastic element 154, which is far away from the bottom wall of the main rotating shaft 15, is connected with a piston 155, an outer wall of the piston 155 is connected with a push rod 156, one end of the push rod 156, which is far away from the piston 155, is connected with a moving block 157, the moving block 157 is rotatably connected in the sleeve 14, an inner wall of the sleeve 14 is connected with a guide block 141, an outer wall of the moving block 157 is perforated with a guide groove 1571 matched with the guide block 141, an inner wall of; the main rotating shaft 15 rotates in the sleeve 14 through a bearing, the main rotating shaft 15 is clamped in the groove 1561 through the positioning plate 159 to drive the push rod 156 to rotate synchronously, and in the rotating process of the push rod 156, the moving block 157 at the top of the push rod 156 moves up and down in the sleeve 14 along with the guide block 141 due to the guide groove 1571, and in the process, the groove 1561 slides on the outer wall of the positioning plate 159, so that the piston 155 extrudes the water flow in the main rotating shaft 15, the waste water at the bottom of the main rotating shaft 15 extrudes the external water flow outwards through the air dispersing holes 158, and further the medicament possibly deposited on the conical bottom plate 2 is overturned, so that the medicament is fully reacted with the waste water, and the stirring effect is further improved.

s1: domestic wastewater is discharged into the first cavity 4 in the tank body 1 through the liquid inlet pipe 7, the wastewater falls on the steel wire mesh 163, large-area solid garbage is blocked, the operation of the air cylinder 10 is controlled, the output end of the air cylinder 10 drives the power rod 11 to extend, the power rod 11 drives the pressing plate 12 to move downwards, the pressing plate 12 extrudes the steel wire mesh 163, the steel wire mesh 163 drives the sliding block 161 to move downwards in the sliding groove 16 and gradually approaches the fixed seat 13, when the steel wire mesh 163 is contacted with the fixed seat 13, the pressing plate 12 acts on the fixed seat 13, the conical teeth 121 at the bottom of the pressing plate 12 crush the large-area fixed garbage, and the wastewater in the pressing plate is discharged;

s2: the wastewater passes through the small hole of the fixed seat 13 and falls into the lower half part of the first cavity 4, the wastewater can be added from the drug adding port 8 at the moment, so that the drug is mixed with the wastewater, and in the process that the pressing plate 12 moves downwards, as the main rotating shaft 15 is in threaded connection with the fixed seat 13 through the external thread 151, the main rotating shaft 15 can rotate and drive the first stirring blade 152 to rotate, so that the first stirring blade 152 accelerates the mixing rate of the drug and the wastewater, in the process, the first gear 153 and the second gear 17 on the outer side of the main rotating shaft 15 are meshed, and the auxiliary rotating shaft 171 drives the second stirring blade 172 to reversely stir the wastewater and the drug outside the second cavity 5;

s3: control first valve 601 and open, waste water after the medicament reaction flows into inside 5 second cavities from honeycomb duct 6, inside 5 second cavities is provided with first filter screen 501, second filter screen 502 and active carbon filter screen 503, filter tiny particulate matters such as silt in the aquatic through first filter screen 501 and second filter screen 502, then filter the aquatic chlorine residue through active carbon filter screen 503, the organic matter, the suspended solid, inorganic ion, the bacterium, the virus, waste water reaches emission standard this moment, can discharge or store through drain pipe 9.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The environment-friendly domestic wastewater treatment device comprises a tank body (1) and is characterized in that the inner wall of the tank body (1) is respectively connected with a conical bottom plate (2) and a fixed plate (3), a first cavity (4) is arranged between the conical bottom plate (2) and the inner wall of the top of the tank body (1), a second cavity (5) is arranged between the fixed plate (3) and the inner wall of the bottom of the tank body (1), a guide pipe (6) is connected between the first cavity (4) and the second cavity (5), the outer wall of the guide pipe (6) is connected with a first valve (601), the outer wall of the first cavity (4) is respectively connected with a liquid inlet pipe (7) and a drug adding port (8), the outer wall of the second cavity (5) is connected with a liquid outlet pipe (9), the outer wall of the tank body (1) is connected with a cylinder (10), the output end of the cylinder (, the one end that cylinder (10) was kept away from in power rod (11) passes jar body (1) and is connected with clamp plate (12), clamp plate (12) sliding connection is in first cavity (4), still be connected with fixing base (13) in first cavity (4), fixing base (13) outer wall is provided with evenly distributed's aperture, clamp plate (12) offset with fixing base (13) activity, first cavity (4) inner wall connection has sleeve pipe (14), it is connected with main axis of rotation (15) to rotate through the bearing in sleeve pipe (14), main axis of rotation (15) outer wall has set firmly external screw thread (151), main axis of rotation (15) are through external screw thread (151) threaded connection in fixing base (13), just main axis of rotation (15) outer wall still is connected with first stirring leaf (152).

2. An environment-friendly domestic wastewater treatment apparatus according to claim 1, wherein the bottom of the pressure plate (12) is provided with evenly distributed conical teeth (121).

3. The domestic wastewater environment-friendly treatment device according to claim 2, wherein sliding grooves (16) are formed in the inner walls of two sides of the tank body (1), two sliding blocks (161) are connected to the inner walls of the sliding grooves (16) in a sliding manner, a steel wire mesh (163) is connected between the two sliding blocks (161), a first elastic element (162) is connected to the bottom of each sliding block (161), and one end, far away from each sliding block (161), of each first elastic element (162) is connected to the bottom wall of each sliding groove (16).

4. An environment-friendly domestic wastewater treatment device according to any one of claims 1-3, wherein a first gear (153) is connected to the outer wall of the main rotating shaft (15), a second gear (17) is connected to the outer wall of each of two sides of the first gear (153) in a meshing manner, an auxiliary rotating shaft (171) is connected to the inner wall of the second gear (17), the auxiliary rotating shaft (171) is rotatably connected to the bottom wall of the fixed seat (13), and a second stirring blade (172) is connected to the outer wall of the auxiliary rotating shaft (171).

5. The domestic wastewater environment-friendly treatment device according to claim 4, wherein the first stirring blade (152) and the second stirring blade (172) are obliquely arranged inside the tank body (1), and the oblique angle is sixty degrees.

6. The environment-friendly domestic wastewater treatment device according to claim 4 or 5, wherein the bottom of the main rotating shaft (15) is perforated with air dispersion holes (158), the inner wall of the main rotating shaft (15) is connected with a second elastic element (154), one end of the second elastic element (154) far away from the bottom wall of the main rotating shaft (15) is connected with a piston (155), the outer wall of the piston (155) is connected with a push rod (156), one end of the push rod (156) far away from the piston (155) is connected with a movable block (157), the movable block (157) is rotatably connected in the sleeve (14), the inner wall of the sleeve (14) is connected with a guide block (141), and the outer wall of the movable block (157) is perforated with a guide groove (1571) matched with the guide block (141).

7. The apparatus for environmental protection treatment of domestic wastewater according to claim 6, wherein the positioning plate (159) is connected to the inner wall of the main rotating shaft (15), and the groove (1561) matching with the positioning plate (159) is cut on the outer wall of the push rod (156).

8. The environment-friendly domestic wastewater treatment device according to claim 1, wherein the outer walls of the liquid inlet pipe (7) and the liquid outlet pipe (9) are connected with a second valve (18).

9. The domestic wastewater environment-friendly treatment device according to claim 8, wherein the inner wall of the second cavity (5) is sequentially connected with a first filter screen plate (501), a second filter screen plate (502) and an activated carbon filter screen (503) from top to bottom, and the aperture of the first filter screen plate (501) is larger than that of the second filter screen plate (502).

10. The use method of the domestic wastewater environment-friendly treatment device is characterized by comprising the following steps:

s1: domestic wastewater is discharged into a first cavity (4) in a tank body (1) through a liquid inlet pipe (7), the wastewater falls on a steel wire mesh (163), large-area solid garbage is blocked, an air cylinder (10) is controlled to operate, an output end of the air cylinder (10) drives a power rod (11) to extend, the power rod (11) drives a pressing plate (12) to move downwards, the pressing plate (12) extrudes the steel wire mesh (163), the steel wire mesh (163) drives a sliding block (161) to move downwards in a sliding groove (16) and gradually approaches a fixing seat (13), when the steel wire mesh (163) is contacted with the fixing seat (13), the pressing plate (12) exerts force on the fixing seat (13), conical teeth (121) at the bottom of the pressing plate (12) crush large-area fixed garbage, and the wastewater in the pressing plate is discharged;

s2: waste water passes through a small hole of the fixing seat (13) and falls into the lower half part of the first cavity (4), at the moment, the waste water can be added with medicine from the medicine adding port (8), so that the medicine is mixed with the waste water, in the process that the pressing plate (12) moves downwards, as the main rotating shaft (15) is in threaded connection with the fixing seat (13) through the external thread (151), the main rotating shaft (15) can rotate and drive the first stirring blade (152) to rotate, so that the first stirring blade (152) accelerates the mixing rate of the medicine and the waste water, in the process, the first gear (153) and the second gear (17) on the outer side of the main rotating shaft (15) are meshed, and the auxiliary rotating shaft (171) drives the second stirring blade (172) to reversely stir the waste water and the medicine outside the second cavity (5);

s3: control first valve (601) and open, waste water after the medicament reaction flows into inside second cavity (5) from honeycomb duct (6), inside second cavity (5) is provided with first filter screen board (501), second filter screen board (502) and active carbon filter screen (503), filter tiny particulate matters such as silt of aquatic through first filter screen board (501) and second filter screen board (502), then filter aquatic chlorine residue through active carbon filter screen (503), the organic matter, the suspended solid, inorganic ion, the bacterium, the virus, waste water reaches emission standard this moment, can discharge or store through drain pipe (9).