CN217698065U

CN217698065U - Underground sewage treatment system

Info

Publication number: CN217698065U
Application number: CN202221934075.3U
Authority: CN
Inventors: 丁文; 李泽涛
Original assignee: Jiangsu Hongyuan Environmental Geotechnical Engineering Co ltd
Current assignee: Jiangsu Hongyuan Environmental Geotechnical Engineering Co ltd
Priority date: 2022-07-25
Filing date: 2022-07-25
Publication date: 2022-11-01
Anticipated expiration: 2032-07-25

Abstract

The utility model relates to an underground sewage treatment system, it relates to sewage treatment system field, and it is including setting up the sedimentation tank on the platform, be equipped with the clearance subassembly that is used for clearing up mud in the sedimentation tank, be equipped with in the sedimentation tank be used for with the mud output of clearance subassembly clearance the conveying component of sedimentation tank, be equipped with in the clearance subassembly and be used for transporting mud transport component lead the mud subassembly. This application has the effect that improves the clearance speed of sedimentation tank mud.

Description

Underground sewage treatment system

Technical Field

The application relates to the field of sewage treatment systems, in particular to an underground sewage treatment system.

Background

At present, with the improvement of living standard, the requirement of people on cleanliness of the people and the surrounding environment is higher and higher, which results in that a large amount of domestic sewage is generated every day, and the domestic sewage contains a large amount of domestic garbage, food residues, eutrophication substances and the like, so that the domestic sewage cannot be directly discharged.

The traditional domestic sewage's mode of treatment is earlier with filtering in taking out the filtering ponds on the platform domestic sewage from the underground, then the sewage after the filtration flows into the sedimentation tank on the platform to solid matter to in the sewage deposits, and sewage after the sediment is carried out neutralization, aeration, water quality testing etc. again handles sewage, thereby makes sewage discharge to reach standard, and sewage is after the sedimentation of sedimentation tank is accomplished, and the staff clears up the mud in the sedimentation tank.

In view of the above technical solutions, the inventors found that: the mode of adopting artifical clearance mud can make the sedimentation tank clearance time long to reduce the efficiency of system to sewage treatment.

SUMMERY OF THE UTILITY MODEL

In order to improve the problem of the clearance speed of sedimentation tank mud, this application provides an underground sewage treatment system.

The application provides an underground sewage treatment system adopts following technical scheme:

the underground sewage treatment system comprises a sedimentation tank arranged on a platform, wherein a cleaning assembly used for cleaning sludge is arranged in the sedimentation tank, a conveying assembly used for conveying the sludge cleaned by the cleaning assembly out of the sedimentation tank is arranged in the sedimentation tank, and a sludge guide assembly used for conveying the sludge to the conveying assembly is arranged in the cleaning assembly.

Through adopting above-mentioned technical scheme, when clearing up the mud in the sedimentation tank to among the underground sewage treatment system, earlier utilize the clearance subassembly to clear up the mud that deposits Chi Debi, convey conveying assembly through leading the mud subassembly with the mud that the clearance subassembly was cleared up, then utilize conveying assembly to export mud in the sedimentation tank, thereby realize the clearance of mud in the sedimentation tank, compare in the mode of the artifical clearance mud in the background art, this scheme obviously improves the clearance speed of mud in the sedimentation tank.

In a specific implementation scheme, two sides of the sedimentation tank are provided with slide rails, two slide rails are provided with slide blocks, the slide blocks are provided with telescopic pieces used for extending into the sedimentation tank, and one end of each telescopic piece far away from the slide blocks is provided with a rotating block;

the clearance subassembly is including setting up two a clearance section of thick bamboo between the rotatory piece, the homonymy is inserted respectively at the both ends of clearance section of thick bamboo rotatory piece, a clearance section of thick bamboo with rotatory piece rotates to be connected, be equipped with on the slider and be used for the drive a clearance section of thick bamboo pivoted driving motor, be equipped with the material through hole on the clearance section of thick bamboo lateral wall, the material through hole with the hole intercommunication of a clearance section of thick bamboo sets up, be equipped with on the clearance section of thick bamboo and be used for following mud the sedimentation tank bottom wall shifts to guide piece in the material through hole.

Through adopting above-mentioned technical scheme, when clearance mud, open driving motor, driving motor drives a clearance section of thick bamboo and rotates, carries the mud of sedimentation tank bottom in the feed through hole through the guiding piece, then in mud flowed into a clearance section of thick bamboo by the feed through hole to realize the clearance of a clearance section of thick bamboo to sedimentation tank bottom mud.

In a specific possible embodiment, the guide member includes a material guide plate disposed on the cleaning cylinder, the material guide plate is disposed along an axial direction of the cleaning cylinder, a shovel plate for shoveling sludge is disposed on the material guide plate, and the material guide plate guides the sludge shoveled by the shovel plate into the through hole.

Through adopting above-mentioned technical scheme, when clearing up mud to the guide piece, when the shovel board rotates the clearance section of thick bamboo minimum point department, the shovel board shovels mud, when the shovel board rotated to the summit by the minimum, mud slided towards the direction of feed through hole along the stock guide, along with the continuation rotation of clearance section of thick bamboo, mud slided into the feed through hole by the stock guide, finally falls into in the hole of clearance section of thick bamboo to realize the clearance of guide piece to mud.

In a specific embodiment, but it is in to lead mud subassembly is including setting up transportation frame in the clearance section of thick bamboo, one of them be equipped with the confession on the rotatory piece the discharge opening that the transportation frame passed, the discharge opening with the hole intercommunication setting of clearance section of thick bamboo, it is equipped with the action wheel to rotate on the transportation frame, it is equipped with from the driving wheel to rotate on the transportation frame, the action wheel with connect through the conveyer belt between the follow driving wheel, the conveyer belt passes the discharge opening, be equipped with on the transportation frame and be used for the drive action wheel pivoted transportation motor.

Through adopting above-mentioned technical scheme, when mud slided into the clearance section of thick bamboo, on mud dropped the conveyer belt, the drive transportation motor rotated, and the transportation motor drives the conveyer belt and rotates, and the conveyer belt passes mud out the clearance section of thick bamboo to realize the transportation of mud, effectively avoided mud to drop the sedimentation tank once more from the material through hole.

In a specific implementation scheme, a mud guide barrel is arranged on the inner side wall of the cleaning barrel and is communicated with the material through hole, and the mud guide barrel faces the conveyor belt.

Through adopting above-mentioned technical scheme, utilize and lead a mud section of thick bamboo and guide the conveyer belt with the downthehole mud of through-material to improve the degree of accuracy that drops on the conveyer belt, effectively avoid mud to flow along the inner wall of a clearance section of thick bamboo simultaneously, then flow into the phenomenon of sedimentation tank through the through-material hole once more.

In a specific implementation mode, a cleaning groove for receiving the sludge conveyed by the conveyor belt is arranged on the bottom wall of the sedimentation tank;

the conveying assembly is arranged on the sludge pump on the platform, a suction end of the sludge pump is provided with a sludge suction pipe used for absorbing sludge, the sludge suction pipe is far away from one end of the sludge pump and is inserted into the cleaning groove, an outlet end of the sludge pump is provided with a discharge pipe, and a guide inclined plane used for collecting sludge to a feed inlet of the sludge pump is arranged in the cleaning groove.

Through adopting above-mentioned technical scheme, the mud that the drive belt conveying came out drops to the clearance inslot, then mud collects the feed inlet of sludge pump through the direction inclined plane, then sludge pump inhales mud and through arranging the discharge of material pipe sedimentation tank to realize the clearance of mud in the sedimentation tank.

In a specific embodiment, the telescopic member includes a hydraulic cylinder disposed on the sliding block, and a piston rod of the hydraulic cylinder is connected to the rotating block.

Through adopting above-mentioned technical scheme, utilize the pneumatic cylinder to realize the lift of a clearance section of thick bamboo, before arranging full sewage in the sedimentation tank, remove a clearance section of thick bamboo to the surface of water through the pneumatic cylinder on, effectively avoid a clearance section of thick bamboo to influence the sediment of sewage, when the sewage after the sediment is arranged next treatment process, remove a clearance section of thick bamboo to mud through the pneumatic cylinder on, then a clearance section of thick bamboo clears up mud to the position transform of a clearance section of thick bamboo has been realized.

In a specific implementation scheme, each sliding block is provided with a rotating shaft, the rotating shaft is provided with a pulley for rolling on the sliding rail, and the sliding block is provided with a sliding motor for driving the rotating shaft to rotate.

Through adopting above-mentioned technical scheme, it rotates to drive the pulley through the drive motor that slides to drive the slider and slide along the guide rail, the slider drives a clearance section of thick bamboo and slides along sedimentation tank bottom wall, thereby improves the area of a clearance section of thick bamboo clearance mud, improves the efficiency of a clearance section of thick bamboo mud clearance.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when sludge in a sedimentation tank in an underground sewage treatment system is cleaned, the sludge is conveyed into the cleaning assembly from the sedimentation tank through the cleaning assembly, the sludge conveyed into the cleaning assembly is conveyed to the conveying assembly through the sludge guide assembly, and then the sludge is discharged out of the sedimentation tank through the conveying assembly, so that the cleaning speed of the sludge in the Gao Chendian tank is increased;

2. the driving motor drives the cleaning barrel to rotate, the cleaning barrel drives the shovel plate and the guide plate to rotate, the shovel plate shovels sludge at the bottom of the sedimentation tank, the sludge falls onto the conveying belt along the guide plate through the material holes along with the rotation of the cleaning barrel, the sludge is conveyed into the cleaning groove through the conveying belt and then is discharged out of the sedimentation tank through the sludge pump, and therefore the sludge in the sedimentation tank is cleaned;

3. the sliding motor drives the pulley to rotate so as to drive the sliding block to move, and the sliding block drives the cleaning barrel to move, so that the sludge cleaning range of the cleaning barrel is enlarged.

Drawings

FIG. 1 is a schematic structural diagram of an underground sewage treatment system according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram for showing a cleaning assembly.

Fig. 3 is an enlarged view of a portion a in fig. 2.

Fig. 4 is a sectional view taken along line B-B in fig. 2.

Fig. 5 is a schematic structural diagram for showing a mud guiding assembly.

Fig. 6 is a schematic structural view for showing the conveying assembly.

Fig. 7 is a sectional view taken along line C-C of fig. 6.

Description of reference numerals: 1. a platform; 2. a sedimentation tank; 21. a slide rail; 211. a slip through hole; 212. a slider; 213. a telescoping member; 214. a hydraulic cylinder; 215. rotating the block; 216. a pulley; 217. a rotating shaft; 218. a slip motor; 22. cleaning the assembly; 221. cleaning the cylinder; 222. a drive motor; 223. a discharge hole; 224. a gear ring; 225. a transmission gear; 226. a feed through hole; 227. a guide; 228. a material guide plate; 229. a shovel plate; 231. a shovel blade; 232. a baffle plate; 24. a delivery assembly; 241. a transport rack; 242. a driving wheel; 243. a driven wheel; 244. a conveyor belt; 245. a transport motor; 247. a mud guiding cylinder; 248. cleaning the tank; 25. a mud guiding component; 251. a sludge pump; 252. a guide slope; 253. a suction dredge pipe; 254. a discharge pipe; 3. a primary treatment tank; 4. an anoxic tank; 5. a biological contact oxidation pond; 6. a secondary sedimentation tank; 7. a disinfection tank; 81. a water outlet pipe; 82. a water inlet pipe; 83. and (4) connecting the pipes.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses underground sewage treatment system.

Referring to fig. 1 and 2, the underground sewage treatment system comprises a sedimentation tank 2 arranged on a platform 1, wherein a primary treatment tank 3, an anoxic tank 4, a biological contact oxidation tank 5, a secondary sedimentation tank 6, a disinfection tank 7 and a water outlet pipe 81 are sequentially arranged on the platform 1, the sedimentation tank 2 is positioned between the primary treatment tank 3 and the anoxic tank 4, a water inlet pipe 82 for introducing sewage into the primary treatment tank 3 is arranged on the platform 1, and a connecting pipe 83 for allowing sewage to flow is arranged between adjacent tank bodies; be equipped with in the sedimentation tank 2 and be used for the clearance subassembly 22 of clearance mud, be equipped with the conveying component 24 that is used for carrying away mud from the sedimentation tank 2 on the platform 1, be equipped with in the clearance subassembly 22 and be used for carrying the mud to lead mud subassembly 25 of conveying component 24.

The sewage is intensively led into the primary treatment tank 3 by using a water inlet pipe 82, the primary treatment tank 3, the sedimentation tank 2, the anoxic tank 4, the biological contact oxidation tank 5, the secondary sedimentation tank 6 and the disinfection tank 7 are used for respectively treating the sewage, and a water outlet pipe 81 is used for leading out the purified sewage and discharging the sewage into a municipal sewage circulating system or a river; when the sludge in the sedimentation tank 2 of the underground sewage treatment system is cleaned, the sludge guide assembly 25 conveys the sludge cleaned by the cleaning assembly 22 into the conveying assembly 24, and the sludge is cleaned out of the sedimentation tank 2 through the conveying assembly 24, so that the sludge in the sedimentation tank 2 is cleaned, and the cleaning speed of the sludge is increased.

Referring to fig. 2 and 3, the sedimentation tank 2 is provided with two slide rails 21, each slide rail 21 is provided with a sliding through hole 211, the sliding through holes 211 are arranged along the length direction of the slide rails 21, each slide rail 21 is provided with a slide block 212 in a sliding manner, each slide block 212 is provided with a plurality of even pulleys 216 used for sliding on the slide rails 21, the plurality of pulleys 216 are uniformly distributed on two sides of the slide block 212, a rotating shaft 217 is arranged between the two pulleys 216, the slide block 212 is provided with a sliding motor 218 for driving the rotating shaft 217 to rotate, each slide block 212 is provided with a telescopic part 213, in the embodiment, the telescopic part 213 comprises a hydraulic cylinder 214 arranged on the slide block 212, the hydraulic cylinder 214 penetrates through the sliding through holes 211 and goes deep into the sedimentation tank 2, the cylinder body of the hydraulic cylinder 214 is fixedly connected with the slide block 212, the piston rod end of the hydraulic cylinder 214 is fixedly connected with a rotating block 215, and the cleaning assembly 22 is arranged between the two rotating blocks 215

The drive motor 218 that slides rotates, the motor 218 that slides drives slider 212 and slides, slider 212 drives clearance subassembly 22 and slides in sedimentation tank 2, clearance subassembly 22 is with the mud clearance in sedimentation tank 2, and increase clearance subassembly 22 clearance area, when being full of sewage in sedimentation tank 2, shrink pneumatic cylinder 214, will clear up subassembly 22 and lead mud subassembly 25 and remove to the surface of water top, thereby effectively avoid clearance subassembly 22 and lead the sediment of mud subassembly 25 influence mud in the sewage.

Referring to fig. 4 and 5, the cleaning assembly 22 in this embodiment includes a cleaning cylinder 221 disposed between two rotating blocks 215, two ends of the cleaning cylinder 221 are respectively inserted into the rotating blocks 215 on the same side, the cleaning cylinder 221 is rotatably connected to the rotating blocks 215, one of the rotating blocks 215 is provided with a driving motor 222, the other rotating block 215 is provided with a discharge hole 223, one end of the cleaning cylinder 221 near the driving motor 222 is provided with a gear ring 224, an output shaft end of the driving motor 222 is provided with a transmission gear 225 engaged with the gear ring 224, the discharge hole 223 is disposed in communication with an inner hole of the cleaning cylinder 221, a peripheral wall of the cleaning cylinder 221 is provided with a plurality of feed holes 226, each feed hole 226 is disposed in communication with the inner hole of the cleaning cylinder 221, each feed hole 226 is disposed along an axis of the cleaning cylinder 221, the plurality of feed holes 226 are uniformly disposed along a circumferential direction of the cleaning cylinder 221, the cleaning cylinder 221 is provided with a guide 227, the guide 227 in this embodiment includes a guide plate 228 disposed between two adjacent feed holes 226, the guide plate 228 is disposed along an axis direction of the cleaning cylinder 221, a baffle plate 228 is disposed on a side of the cleaning cylinder 228, a side of the cleaning cylinder 221 which is provided with a scraper plate 229 far from the guide plate 228, a scraper plate 228, a baffle plate 231 and a scraper plate 232, a side of the baffle plate 231, which is disposed on the baffle plate 231 and is far from the baffle plate 231, and a side of the baffle plate 231.

When sludge in the sedimentation tank 2 is cleaned, the driving motor 222 is started, the driving motor 222 drives the cleaning barrel 221 to rotate through the transmission gear 225, the cleaning barrel 221 drives the material guide plate 228 and the shovel plate 229 to rotate, when the shovel plate 229 rotates to the lowest position of the cleaning barrel 221, the shovel plate 229 shovels the sludge at the bottom of the sedimentation tank 2, when the shovel plate 229 rotates from the lowest position to the highest position of the cleaning barrel 221, the sludge slides along the material guide plate 228, finally the sludge slides into the material through hole 226 along the material guide plate 228, so that the sludge is transferred into the cleaning barrel 221 from the bottom of the sedimentation tank 2, thereby cleaning the sludge in the sedimentation tank 2 is realized, the shovel plate 231 is arranged to facilitate shoveling the sludge through the shovel plate 229, and the shovel plate 231 is arranged as a plastic sheet to effectively avoid hard contact between the shovel plate 231 and the bottom wall of the sedimentation tank 2, and damage to the bottom wall of the sedimentation tank 2 is caused.

Referring to fig. 4 and 5, the mud guiding assembly 25 in this embodiment includes a transportation frame 241 disposed in the cleaning barrel 221, the transportation frame 241 is inserted into the discharge hole 223 and penetrates through the discharge hole 223, a driving wheel 242 is rotatably disposed on one side of the transportation frame 241 penetrating through the discharge hole 223, a driven wheel 243 is rotatably disposed on one end of the transportation frame 241 far away from the driving wheel 242, the driving wheel 242 is connected with the driven wheel 243 through a conveyor belt 244, the height of the discharge hole 223 is greater than the distance between the upper layer and the lower layer of the conveyor belt 244, a transportation motor 245 is disposed on the transportation frame 241, an output end of the transportation motor 245 is coaxially disposed with the driving wheel 242, a mud guiding barrel 247 is disposed on an inner side wall of the cleaning barrel 221, the mud guiding barrels 247 correspond to the material passing holes 226 one by one, the mud guiding barrel 247 is disposed along the length direction of the cleaning barrel 221, the mud guiding barrel 247 is communicated with the material passing holes 226, and the mud guiding barrel 247 faces the conveyor belt 244.

When the sludge falls into the through hole 226, the sludge falls onto the conveyor belt 244 along the sludge guide cylinder 247, the conveyor motor 245 is driven to rotate, the conveyor motor 245 drives the conveyor belt 244 to rotate, the conveyor belt discharges the sludge out of the cleaning cylinder 221 through the discharge hole 223, and therefore the sludge cleaned by the cleaning cylinder 221 is conveyed; the sludge guide barrel 247 increases the slip time between the sludge having the through holes 226 falling onto the conveyor belt 244, thereby improving the accuracy of the sludge falling onto the conveyor belt 244.

Referring to fig. 6, fig. 7, be equipped with clearance groove 248 on 2 diapire of sedimentation tank, clearance groove 248 sets up along the length direction of slide rail 21, the mud that conveyer belt 244 conveyed out drops in clearance groove 248, the one end of clearance groove 248 is equipped with suction pipe 253, be equipped with direction inclined plane 252 on the bottom wall of clearance groove 248 tank, the distance of wire inclined plane to 2 diapire of sedimentation tank reduces to the one side of keeping away from suction pipe 253 by the one side that is close to suction pipe 253 gradually, be equipped with sludge pump 251 on the platform 1, the pan feeding mouth end and the sludge pump 251 intercommunication of sludge pump 251 set up, sludge pump 251's discharge gate is equipped with discharge pipe 254.

The mud that conveyer belt 244 conveyed out drops in clearance groove 248, and mud flows to sludge pump 251 feed inlet along direction inclined plane 252, and sludge pump 251 inhales mud and discharges mud sedimentation tank 2 through discharge pipe 254 to realize the clearance of the interior mud of sedimentation tank 2, thereby improve the clearance speed of sedimentation tank 2 mud.

The implementation principle of the underground sewage treatment system in the embodiment of the application is as follows: when the mud clearance in the sedimentation tank 2 to among the underground sewage treatment system, utilize clearance subassembly 22 to clear up the mud of 2 bottoms of sedimentation tank, then carry conveying assembly 24 through leading the mud subassembly 25 with the mud of clearance subassembly 22 clearance, then discharge mud sedimentation tank 2 through conveying assembly 24 to the realization is to the clearance of mud in the sedimentation tank 2, improves the clearance speed of mud in the sedimentation tank 2.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an underground sewage treatment system, is including setting up sedimentation tank (2) on platform (1), its characterized in that: be equipped with in sedimentation tank (2) and be used for clearing up clearance subassembly (22) of mud, be equipped with in sedimentation tank (2) and be used for with the mud output of clearance subassembly (22) clearance conveying component (24) of sedimentation tank (2), be equipped with in clearance subassembly (22) and be used for transporting mud to leading mud subassembly (25) of conveying component (24).

2. The underground sewage treatment system of claim 1, wherein: sliding rails (21) are arranged on two sides of the sedimentation tank (2), sliding blocks (212) are arranged on the two sliding rails (21), telescopic pieces (213) which are used for extending into the sedimentation tank (2) are arranged on the sliding blocks (212), and a rotating block (215) is arranged at one end, far away from the sliding blocks (212), of each telescopic piece (213);

clearance subassembly (22) are including setting up two clearance section of thick bamboo (221) between rotatory piece (215), the both ends of clearance section of thick bamboo (221) insert respectively the homonymy rotatory piece (215), clearance section of thick bamboo (221) with rotatory piece (215) rotate to be connected, be equipped with on slider (212) and be used for the drive clearance section of thick bamboo (221) pivoted driving motor (222), be equipped with on clearance section of thick bamboo (221) lateral wall and lead to material hole (226), lead to material hole (226) with the hole intercommunication setting of clearance section of thick bamboo (221), be equipped with on clearance section of thick bamboo (221) and be used for following mud guide piece (227) in sedimentation tank (2) diapire shifts to lead to material hole (226).

3. A subsurface sewage treatment system according to claim 2 wherein: the guide piece (227) comprises a material guide plate (228) arranged on the cleaning barrel (221), the material guide plate (228) is arranged along the axial direction of the cleaning barrel (221), a shoveling plate (229) used for shoveling sludge is arranged on the material guide plate (228), and the material guide plate (228) is used for guiding the sludge shoveled by the shoveling plate (229) into the material through hole (226).

4. The underground sewage treatment system of claim 2, wherein: lead mud subassembly (25) including setting up transportation frame (241) in clearance section of thick bamboo (221), one of them be equipped with the confession on rotatory piece (215) discharge opening (223) that transportation frame (241) passed, discharge opening (223) with the hole intercommunication setting of clearance section of thick bamboo (221), it is equipped with action wheel (242) to rotate on transportation frame (241), it is equipped with from driving wheel (243) to rotate on transportation frame (241), action wheel (242) with connect through conveyer belt (244) between follow driving wheel (243), conveyer belt (244) pass discharge opening (223), be equipped with on transportation frame (241) and be used for the drive action wheel (242) pivoted transportation motor (245).

5. The underground sewage treatment system of claim 4, wherein: a mud guide cylinder (247) is arranged on the inner side wall of the cleaning cylinder (221), the mud guide cylinder (247) is communicated with the material passing hole (226), and the mud guide cylinder (247) faces the conveyor belt (244).

6. The underground sewage treatment system of claim 4, wherein: a cleaning groove (248) for receiving the sludge conveyed by the conveyor belt (244) is arranged on the bottom wall of the sedimentation tank (2);

the conveying assembly (24) comprises a sludge pump (251) arranged on the platform (1), a sludge suction pipe (253) used for absorbing sludge is arranged at the suction end of the sludge pump (251), one end, far away from the sludge pump (251), of the sludge suction pipe (253) is inserted into the cleaning groove (248), a discharge pipe is arranged at the outlet end of the sludge pump (251), and a guide inclined plane (252) used for collecting sludge to a feed inlet of the sludge pump (251) is arranged in the cleaning groove (248).

7. A subsurface sewage treatment system according to claim 2 wherein: the telescopic part (213) comprises a hydraulic cylinder (214) arranged on the sliding block (212), and a piston rod of the hydraulic cylinder (214) is connected with the rotating block (215).

8. A subsurface sewage treatment system according to claim 2 wherein: every be equipped with pivot (217) on slider (212), be equipped with on pivot (217) and be used for rolling pulley (216) on slide rail (21), be equipped with on slider (212) and be used for the drive pivot (217) pivoted sliding motor (218).