CN114653104A

CN114653104A - Rural domestic sewage treatment system

Info

Publication number: CN114653104A
Application number: CN202210243551.5A
Authority: CN
Inventors: 李雷; 陈涛; 陈尚雍; 潘际权; 王盼; 李林松; 张佩刚
Original assignee: China Railway Urban Rural Environmental Engineering Co Ltd
Current assignee: China Railway Urban Rural Environmental Engineering Co Ltd
Priority date: 2022-03-12
Filing date: 2022-03-12
Publication date: 2022-06-24

Abstract

The invention relates to a rural sewage treatment system which comprises a sewage settling tank and a sewage discharge pipe, wherein one end of the sewage discharge pipe is communicated with the sewage settling tank, the top of the sewage settling tank is provided with an opening, a plugging plate for plugging the opening of the sewage settling tank is arranged at the opening of the sewage settling tank, a filter screen is arranged below the plugging plate, the filter screen is arranged in a cylindrical shape and has an upward opening, one end of the sewage discharge pipe is inserted into the filter screen, a driving assembly for driving the filter screen to move out of the sewage settling tank is arranged in the sewage settling tank, a discharge hole is formed in the side wall of the filter screen, and a plugging assembly for plugging the discharge hole is arranged on the discharge hole. This application has the effect of alleviating the manual hard problem of first filter screen of extracting.

Description

Rural domestic sewage treatment system

Technical Field

The invention relates to the technical field of sewage treatment, in particular to a rural domestic sewage treatment system.

Background

The rural domestic sewage refers to wastewater generated in daily life of villagers, and comprises kitchen water, laundry water, bathing water and the like. The rural domestic sewage treatment is to remove and degrade harmful substances and polluted environment components in the domestic sewage for harmless treatment.

Chinese patent publication No. CN213771746U discloses a rural domestic sewage treatment system, which comprises a sewage sludge basin, a sewage treatment device, a middle-section reservoir and a high-pressure reverse osmosis filtering and disinfecting purification device, wherein the sewage sludge basin, the sewage treatment device, the middle-section reservoir and the high-pressure reverse osmosis filtering and disinfecting purification device are sequentially connected, a sewage discharge pipe is introduced into the sewage sludge basin, a first filter screen is arranged in the sewage sludge basin, and the first filter screen is positioned at an outlet of the sewage discharge pipe and is used for filtering sewage introduced into the sewage sludge basin.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: rural domestic sewage often contains more debris, and when having debris from sewage discharge pipe entering first filter screen, the great debris of volume can be piled up in first filter screen, consequently need often clear up the interior bulky debris of first filter screen, and when a large amount of debris were piled up in first filter screen, the quality of first filter screen was great, and it is harder that the operator manually upwards draws first filter screen.

Disclosure of Invention

In order to alleviate the hard problem of manually extracting first filter screen, this application provides a rural sewage treatment system.

The application provides a rural sewage treatment system adopts following technical scheme:

the utility model provides a rural sewage treatment system, includes sewage detritus pond and sewage delivery pipe, sewage delivery pipe's one end with sewage detritus pond intercommunication, the top in sewage detritus pond is equipped with the opening, the opening part in sewage detritus pond is equipped with and is used for the shutoff sewage detritus pond open-ended shutoff board, the shutoff board below is equipped with the filter screen, the filter screen is the tube-shape setting and the opening makes progress, sewage delivery pipe's one end inserts in the filter screen, be equipped with in the sewage detritus pond and be used for the drive the filter screen shifts out the drive assembly in sewage detritus pond, be equipped with the discharge gate on the lateral wall of filter screen, be equipped with on the discharge gate and be used for the shutoff the shutoff subassembly of discharge gate.

Through adopting above-mentioned technical scheme, during the use, the operator starts drive assembly, and drive assembly drives the filter screen rebound and shifts out sewage sludge basin, and then has reduced the manual possibility of extracting the filter screen of operator, has alleviated and has alleviated the manual hard problem of first filter screen of extracting, later opens the shutoff subassembly again, and the operator takes out the debris in the filter screen from the discharge gate.

Optionally, drive assembly includes driving motor, first lead screw, connecting plate and protective tube, the connecting plate inlays to be established the bottom of filter screen, set up threaded hole on the connecting plate, the electronic the inlaying of drive is established the bottom in sewage detritus pond, first lead screw fixed connection be in on driving motor's the output shaft, the one end of first lead screw insert threaded hole in and in screw hole threaded connection, the protective tube cover is established outside the first lead screw and with the bottom of filter screen is connected, the top of protective tube inserts the closure plate, the lateral wall of filter screen is equipped with the spacing groove, sewage delivery pipe's one end is run through the spacing groove and with spacing groove sliding fit.

Through adopting above-mentioned technical scheme, during the use, the operator starts driving motor, and driving motor's output shaft drives first lead screw and rotates, first lead screw and connecting plate threaded connection, sewage delivery pipe and spacing groove sliding fit make the filter screen rebound, can reduce bulky filth and hinder the pivoted possibility of first lead screw through setting up the protective tube, consequently, made things convenient for the operator to upwards extract out the sewage sediment pond with first filter screen.

Optionally, the sewage discharge pipe divides the limiting groove into a first groove and a second groove, mounting grooves are arranged on opposite side walls of the first groove, the first groove is rotationally connected with a first roller, two ends of the first roller are arranged corresponding to the two mounting grooves one by one, the mounting grooves are internally provided with torsional springs which are sleeved outside the first rollers, one ends of the torsional springs are fixedly connected with the side walls of the mounting grooves, the other ends of the torsional springs are connected with the first rollers, the first roller is wound with a leakage-proof net, one end of the leakage-proof net is connected with the upper side wall of the sewage discharge pipe, the leakage-proof net shields the first groove, a second sliding groove is arranged on the bottom wall of the second groove, the sewage discharge pipe is characterized in that a filter plate is connected to the bottom wall of the sewage discharge pipe, one end of the filter plate is inserted into the second sliding groove and shelters the second sliding groove in a sliding fit mode.

Through adopting above-mentioned technical scheme, when the filter screen rebound, the position of sewage delivery pipe's relative filter screen is decurrent, therefore, sewage delivery pipe drives the downward movement of anti-leakage net, also drive the filter downstream, when the downward movement of anti-leakage net, first roller unreels, torsional spring atress rolling this moment, filter downstream and second groove sliding fit, through setting up anti-leakage net and filter reduced the possibility that bulky debris leak to the sewage detritus pond from the spacing groove, and, in order to let the filter screen can save the debris in the more sewage, therefore, sewage delivery pipe sets up the open-top that is close to the sewage detritus pond at the filter screen usually, through setting up first roller and anti-leakage net, shared space when having saved the anti-leakage net and removing.

Optionally, the plugging assembly includes a first net, a first bearing, a first rope, a first fixed pulley, a second fixed pulley, a limiting post, a first plate, a second plate, a rolling post and an elastic band, the first fixed pulley and the second fixed pulley are both disposed on the plugging plate, the first rope is wound on the first fixed pulley and the second fixed pulley, the first plate is connected to the top end of the first lead screw, the first plate is circularly disposed and contacts with the inner side wall of the protection tube, the rolling post is connected to the first plate, the top end of the rolling post is connected to the second plate through the first bearing, the plugging plate is provided with a sliding through hole communicated with the protection tube, one end of the first rope penetrates through the sliding through hole and is inserted into the protection tube and connected to the second plate, the side wall of the discharge port is provided with a first limiting hole, the other end of first rope inserts first spacing downthehole and connect spacing post, spacing post with first spacing hole sliding fit, first net articulates in and shelter from in the discharge gate, the both sides of first net all set up the elastic cord, the one end of elastic cord with first net is connected, the other end with the lateral wall of discharge gate is connected, the roof of first net is equipped with the confession spacing post male spacing hole of second works as the shutoff board shutoff during sewage detritus pond opening, spacing post one end is located first spacing downthehole, the other end is located the spacing downthehole of second.

By adopting the technical scheme, when the filter screen moves upwards, the position of the first lead screw relative to the filter screen moves downwards to further drive the first plate to move downwards, the first plate drives the rolling column to move downwards, the rolling column drives the second plate to move downwards, the second plate drives one end of the first rope to move downwards, the other end of the first rope moves upwards under the guidance of the first fixed pulley and the second fixed pulley to drive the limiting column to move out of the second limiting hole and completely move into the first hole, at the moment, the first net is released by the constraint of the limiting column, the first net rotates outwards under the extrusion force of sundries accumulated in the filter net, at the moment, the elastic bands on the two sides of the filter screen deform, the two elastic bands and the filter screen form a dustpan-shaped storage space for containing sundries overflowing from the filter screen, and the discharge port is opened for an operator to take out the sundries in the filter screen, after the debris clearance of operator in with the filter screen, the extrusion force that the filter screen received disappears, the elastic cord resumes deformation, make first net shelter from the discharge gate, then, the operator makes the filter screen move down through drive assembly, spacing post one end is inserted in the spacing downthehole of second, the other end is in first spacing downthehole, realize locking to first net, along with moving down of filter screen, first rope is the lax state by the state conversion of tightening gradually, and, the wind spring resumes deformation and becomes shape variable force drive first roller and rotate, and then drive first net and carry out the rolling, and then realized opening and close to the discharge gate.

Optionally, a brush is arranged on the side wall of the rolling column, and the brush is in contact with the side wall of the protection tube.

Through adopting above-mentioned technical scheme, when first lead screw rotates, first lead screw drives the rolling post and rotates, make the brush clear up the impurity on the protective tube inside wall, debris under the brush clearance can be accepted to first board rebound simultaneously, when the opening in shutoff board shutoff sewage detritus pond, the upper surface of first board flushes with the top surface of shutoff board, played the effect of blockking up slip through-hole on the one hand, prevent that other impurity from falling into in the protective tube, on the other hand makes things convenient for the operator to clear up the impurity on the first board.

Optionally, the rolling post is detachably connected to the first plate.

Through adopting above-mentioned technical scheme, the operator can be with the rolling column from first board dismantlement for the space on the first board is bigger, is favorable to the operator to clean the impurity that falls on the first board.

Optionally, a step-down groove is formed in the limiting column, a connecting rod is arranged on the side wall of the second limiting hole, two ends of the connecting rod are in contact with the side wall of the second limiting hole, the connecting rod is inserted into the step-down groove and is in sliding fit with the step-down groove, a second rope is arranged on the side wall of the open end of the sewage slag settling tank, a limiting hook is arranged at one end of the second rope, the limiting hook hooks the connecting rod, and the second rope is in a tightening state.

Through adopting above-mentioned technical scheme, open the back as first net, the operator inserts spacing downthehole and collude the connecting rod of second with spacing hook, plays spacing effect to first net, has reduced first net and has reduced along with the extrusion force that its top received, and shelters from the possibility of discharge gate.

Optionally, the second rope is a bungee rope.

Through adopting above-mentioned technical scheme, the elasticity rope has elasticity, can take place a certain amount of deformation, can reduce the length of second rope, has reduced the possibility that the second rope takes place to twine and knot in the use.

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

1. the problem that the first filter screen is manually extracted difficultly is solved by arranging the driving assembly, the discharge hole and the plugging assembly;

2. this application is through setting up driving motor, first lead screw, connecting plate and protective tube, and the operator starts driving motor, and driving motor's output shaft drives first lead screw and rotates, first lead screw and connecting plate threaded connection, sewage delivery pipe and spacing groove sliding fit make the filter screen rebound, has made things convenient for the operator to upwards extract out the sewage sediment pond with first filter screen.

Drawings

FIG. 1 is a schematic view of the rural sewage treatment system structure of the present application.

Fig. 2 is a sectional view of the internal structure of the filter net in the embodiment of the present application.

Fig. 3 is an enlarged view of a portion a in fig. 1.

Fig. 4 is an enlarged view of a portion B in fig. 2.

Fig. 5 is a schematic structural diagram of the anti-leakage net filter board in the embodiment of the application.

Fig. 6 is a top view of the plugging plate and the sewage drain pipe structure in the embodiment of the present application.

Fig. 7 is a sectional view taken along the line a-a in fig. 6.

Description of reference numerals: 1. a sewage sludge settling tank; 2. a sewage discharge pipe; 3. an opening; 4. a plugging plate; 5. a filter screen; 6. a discharge port; 7. a drive motor; 8. a first lead screw; 9. a connecting plate; 10. a protective tube; 11. a first groove; 13. mounting grooves; 14. a first roller; 15. a torsion spring; 16. a leakage-proof net; 17. a second sliding groove; 18. a filter plate; 19. a first web; 20. a first bearing; 21. a first cord; 22. a first fixed pulley; 23. a second fixed pulley; 24. a limiting column; 25. a first plate; 26. a second plate; 27. a rolling post; 28. elastic bands; 29. a brush; 30. a sliding through hole; 31. a first limiting hole; 32. a yielding through hole; 33. a second limiting hole; 34. a yielding groove; 35. a connecting rod; 36. a second rope; 37. and a limiting hook.

Detailed Description

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

The embodiment of the application discloses a rural sewage treatment system. Referring to fig. 1, 2 and 3, the rural sewage treatment system comprises a sewage slag settling tank 1 and a sewage discharge pipe 2, one end of the sewage discharge pipe 2 is fixedly inserted into the sewage slag settling tank 1 and is communicated with the sewage slag settling tank 1, an opening 3 is arranged at the top of the sewage slag settling tank 1, a plugging plate 4 for plugging the opening 3 of the sewage slag settling tank 1 is arranged at the opening 3 of the sewage slag settling tank, a filter screen 5 is fixedly connected below the plugging plate 4, the filter screen 5 is arranged in a square cylinder shape, the opening of the filter screen 5 is upward, a limit groove for inserting the sewage discharge pipe 2 is arranged on the side wall of the filter screen 5, the limit groove is arranged along the length direction of the filter screen 5, one end of the sewage discharge pipe 2 penetrates through the limit groove and is in sliding fit with the limit groove, a driving component for driving the filter screen 5 to move out of the sewage slag settling tank 1 is arranged in the sewage slag settling tank 1, a discharge port 6 is arranged on the side wall of the filter screen 5, and a plugging component for plugging the discharge hole 6 is arranged on the discharge hole 6.

Referring to fig. 2, fig. 4 and fig. 5, drive assembly includes driving motor 7, first lead screw 8, connecting plate 9 and protecting tube 10, driving motor 7 is the motor that is just reversing, connecting plate 9 is fixed to be inlayed in the bottom of filter screen 5, and be in the central point of filter screen 5 bottom and put, set up threaded hole on the connecting plate 9, driving motor 7 is vertical pre-buried in the bottom of sewage detritus pond 1, the vertical fixed connection of first lead screw 8 is on driving motor 7's output shaft, the one end of first lead screw 8 inserts in the threaded hole and with threaded hole threaded connection, protecting tube 10 covers and establishes outside first lead screw 8, the one end and the connecting plate 9 fixed connection of protecting tube 10, the top of protecting tube 10 inserts in the closure plate 4.

Referring to fig. 5, 6 and 7, due to the arrangement of the limiting groove, impurities in the filter screen 5 may leak out of the limiting groove and fall into the sewage sludge basin 1, in order to solve the above problems, the sewage discharge pipe 2 divides the limiting groove into a first groove 11 and a second groove, the first groove 11 is located above the second groove, mounting grooves 13 are respectively formed on opposite side walls of the first groove 11, first rollers 14 are rotatably connected to the first groove 11, two ends of the first rollers 14 are arranged in one-to-one correspondence with the two mounting grooves 13, torsion springs 15 are respectively arranged in the mounting grooves 13, the torsion springs 15 are sleeved outside the roller shafts of the first rollers 14, one ends of the torsion springs 15 are fixedly connected with the side walls of the mounting grooves 13, the other ends of the torsion springs 15 are fixedly connected with the first rollers 14, leakage-proof nets 16 are wound on the first rollers 14, both sides of the leakage-proof nets 16 in the length direction are contacted with the side walls of the first groove 11 after unwinding, one ends of the leakage-proof nets 16 are fixedly connected to the upper side walls of the sewage discharge pipe 2, the other end is fixedly connected to the first roller 14.

Referring to fig. 2, 5 and 7, the first groove 11 is shielded by the anti-leakage net 16, the second sliding groove 17 is formed in the bottom wall of the second groove, the second sliding groove 17 is a through groove, the bottom wall of the sewage discharge pipe 2 is connected with the filter plate 18, and one end of the filter plate 18 is inserted into the second sliding groove 17, shields the second groove and is in sliding fit with the second groove.

Referring to fig. 2 and 4, the plugging assembly includes a first net 19, a first bearing 20, a first rope 21, a first fixed pulley 22, a second fixed pulley 23, a stopper post 24, a first plate 25, a second plate 26, a rolling post 27, and an elastic band 28. The first fixed pulley 22 and the second fixed pulley 23 are both fixedly connected to the top surface of the blocking plate 4, the first fixed pulley 22 and the second fixed pulley 23 are equal in height, and the first rope 21 is wound on the first fixed pulley 22 and the second fixed pulley 23.

Referring to fig. 2 and 4, the first plate 25 is fixedly connected to the top end of the first lead screw 8, the first plate 25 is circularly arranged and contacts with the inner side wall of the protection tube 10, an external thread is arranged at one end of the rolling column 27, a second threaded hole corresponding to the center of the first plate 25 is formed in the center of the circle, the rolling column 27 is in threaded connection with the second threaded hole, a brush 29 is fixedly connected to the rolling column 27, the brush 29 contacts with the inner side wall of the protection tube 10, the top end of the rolling column 27 is connected to the second plate 26 through a first bearing 20, and a sliding through hole 30 communicated with the inside of the protection tube 10 is formed in the blocking plate 4.

Referring to fig. 2 and 4, one end of the first rope 21 penetrates through the sliding through hole 30 and is inserted into the protection tube 10, and is fixedly connected to the second plate 26, the top wall of the discharge port 6 is provided with a first limiting hole 31, the plugging plate 4 is provided with a yielding through hole 32 communicated with the first limiting hole 31, the other end of the first rope 21 penetrates through the yielding through hole 32 and is inserted into the first limiting hole 31, and is fixedly connected to the limiting column 24, and the limiting column 24 is in sliding fit with the first limiting hole 31.

Referring to fig. 1, fig. 2 and fig. 3, first net 19 articulates at the diapire of discharge gate 6 and shelters from discharge gate 6, the equal fixed connection elastic cord 28 in both sides of first net 19, the one end of elastic cord 28 and the lateral wall fixed connection of first net 19, the other end and the lateral wall fixed connection of discharge gate 6, the spacing hole 33 of confession spacing post 24 male second is seted up at the top of first net 19, the spacing hole 33 of second is the blind hole, when shutoff board 4 shutoff sewage detritus pond 1 opening 3, first spacing post 24 one end is located first spacing hole 31, the other end is located the spacing hole 33 of second, first rope 21 is in lax state this moment.

Referring to fig. 1, 2 and 3, the limiting column 24 is provided with a yielding groove 34, the yielding groove 34 communicates with two sides of the limiting column 24, a connecting rod 35 is fixedly connected to a side wall of the second limiting hole 33, and two ends of the connecting rod 35 are connected to the side wall of the second limiting hole 33. Connecting rod 35 inserts in the groove 34 of stepping down and with the groove 34 sliding fit that steps down, fixedly connected with second rope 36 on the lateral wall of 1 opening 3 of sewage grit chamber, second rope 36 is the bungee, the spacing hook 37 of the one end fixedly connected with of second rope 36, and connecting rod 35 is hooked to spacing hook 37, and second rope 36 is in the state of tightening.

The implementation principle of a rural sewage treatment system in the embodiment of the application is as follows: an operator starts the driving motor 7, an output shaft of the driving motor 7 drives the first lead screw 8 to rotate, the first lead screw 8 is in threaded connection with the connecting plate 9, the sewage discharge pipe 2 is in sliding fit with the limiting groove, the filter screen 5 moves upwards, the position of the sewage discharge pipe 2 is downward relative to the filter screen 5, the sewage discharge pipe 2 drives the anti-leakage net 16 to move downwards and also drives the filter plate 18 to move downwards, in the process, the first groove 11 is always shielded by the anti-leakage net 16, the second groove is always shielded by the filter plate 18, the possibility that bulky sundries leak out of the limiting groove is reduced, meanwhile, the first lead screw 8 rotates to drive the first plate 25 to rotate, the first plate 25 drives the rolling column 27 to rotate, and the rolling column 27 drives the brush 29 to rotate and cleans the inner side wall of the protective pipe 10;

as the filter screen 5 rises, the second plate 26 gradually descends, the second plate 26 pulls the first string 21, when the first string 21 in a relaxed state is straightened, the other end of the first string 21 moves the stopper post 24 upward, so that the position-limiting post 24 moves out of the second position-limiting hole 33, the first net 19 is released from the restraint of the position-limiting post 24, the first net 19 is rotated outward by the pressing force of the foreign materials accumulated in the filtering net 5, and at this time, the elastic bands 28 at both sides of the first net 19 are deformed, and the two elastic bands 28 and the first net 19 form a dustpan-shaped storage space for accommodating the sundries overflowing from the filter net 5, and the discharge port 6 is opened, the filter screen 5 is moved out of the sewage and slag settling tank 1 at the moment, the operator pulls the second rope 36 to hook the limit hook 37 on the connecting rod 35, sundries in the filter screen 5 are cleaned, so that the problem that the first filter screen 5 is difficult to extract manually is solved;

after the cleaning is finished, the operator takes out the limit hook 37, the elastic band 28 is quickly restored to be deformed due to the lack of extrusion of bulky sundries, and drives the first net 19 to rotate to the vertical state, at this time, the first limiting hole 31 is communicated with the second limiting hole 33, after the operator connects the rolling column 27 with the first plate 25, the driving motor 7 is started to drive the driving component to drive the filter screen 5 to move downwards, in the process, the rolling column 27 drives the brush 29 to rotate, and gradually enters the slide through hole 30, one end of the limit post 24 is inserted into the second limit hole 33, when the closure plate 4 covers the opening 3 of the sewage sludge basin 1, the first plate 25 closes the sliding through hole 30, so that the possibility that impurities enter the protective pipe 10 is reduced, the operator rotates the rolling column 27, the rolling column 27 is detached from the first plate 25, and the operator can clean the impurities accumulated on the first plate 25 conveniently.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, 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 a rural sewage treatment system, includes sewage detritus pond (1) and sewage delivery pipe (2), the one end of sewage delivery pipe (2) with sewage detritus pond (1) intercommunication, its characterized in that: the top in sewage scum pond (1) is equipped with opening (3), opening (3) department in sewage scum pond (1) is equipped with and is used for the shutoff closure plate (4) of opening (3) in sewage scum pond (1), closure plate (4) below is equipped with filter screen (5), filter screen (5) are the tube-shape setting and opening (3) upwards, the one end of sewage delivery pipe (2) inserts in filter screen (5), be equipped with in sewage scum pond (1) and be used for the drive filter screen (5) shift out the drive assembly in sewage scum pond (1), be equipped with discharge gate (6) on the lateral wall of filter screen (5), be equipped with on discharge gate (6) and be used for the shutoff subassembly of discharge gate (6).

2. The rural sewage treatment system of claim 1, wherein: the driving assembly comprises a driving motor (7), a first lead screw (8), a connecting plate (9) and a protective pipe (10), the connecting plate (9) is embedded at the bottom of the filter screen (5), a threaded hole is arranged on the connecting plate (9), the driving motor (7) is embedded at the bottom of the sewage slag settling tank (1), the first lead screw (8) is fixedly connected on an output shaft of the driving motor (7), one end of the first lead screw (8) is inserted into the threaded hole and is in threaded connection with the threaded hole, the protective pipe (10) is covered outside the first lead screw (8) and is connected with the bottom of the filter screen (5), the top end of the protective pipe (10) is inserted into the plugging plate (4), the side wall of the filter screen (5) is provided with a limit groove, one end of the sewage discharge pipe (2) penetrates through the limiting groove and is in sliding fit with the limiting groove.

3. The rural sewage treatment system of claim 2, wherein: the sewage discharge pipe (2) divides the limiting groove into a first groove (11) and a second groove, wherein the opposite side walls of the first groove (11) are respectively provided with a mounting groove (13), the first groove (11) is rotationally connected with a first roller (14), the two ends of the first roller (14) are arranged in a one-to-one correspondence manner with the two mounting grooves (13), the mounting grooves (13) are internally provided with a torsional spring (15), the torsional spring (15) is sleeved outside the first roller (14), one end of the torsional spring (15) is fixedly connected with the side walls of the mounting grooves (13), the other end of the torsional spring is connected with the first roller (14), the first roller (14) is wound with a leakage-proof net (16), one end of the leakage-proof net (16) is connected onto the upper side wall of the sewage discharge pipe (2), the leakage-proof net (16) shelters from the first groove (11), the bottom wall of the second groove is provided with a second sliding groove (17), be connected with filter (18) on the diapire of sewage delivery pipe (2), the one end of filter (18) is inserted in second sliding tray (17) and shelter from the second groove and with second sliding tray (17) sliding fit.

4. The rural sewage treatment system of claim 2, wherein: the plugging assembly comprises a first net (19), a first bearing (20), a first rope (21), a first fixed pulley (22), a second fixed pulley (23), a limiting column (24), a first plate (25), a second plate (26), a rolling column (27) and an elastic band (28), wherein the first fixed pulley (22) and the second fixed pulley (23) are arranged on the plugging plate (4), the first rope (21) is wound on the first fixed pulley (22) and the second fixed pulley (23), the first plate (25) is connected to the top end of the first lead screw (8), the first plate (25) is circularly arranged and is in contact with the inner side wall of the protective pipe (10), the rolling column (27) is connected to the first plate (25), and the top end of the rolling column (27) is connected to the second plate (26) through the first bearing (20), the blocking plate (4) is provided with a sliding through hole (30) communicated with the protective pipe (10), one end of the first rope (21) penetrates through the sliding through hole (30) and is inserted into the protective pipe (10) and connected onto the second plate (26), the side wall of the discharge port (6) is provided with a first limiting hole (31), the other end of the first rope (21) is inserted into the first limiting hole (31) and is connected with a limiting column (24), the limiting column (24) is in sliding fit with the first limiting hole (31), the first net (19) is hinged into the discharge port (6) and shields the discharge port (6), elastic bands (28) are arranged on two sides of the first net (19), one end of each elastic band (28) is connected with the first net (19), and the other end of each elastic band is connected with the side wall of the discharge port (6), the roof of first net (19) is equipped with the confession spacing hole (33) of spacing post (24) male second, works as shutoff board (4) shutoff during opening (3) of sewage detritus pond (1), spacing post (24) one end is located in first spacing hole (31), the other end is located in spacing hole (33) of second.

5. The rural sewage treatment system of claim 4, wherein: the side wall of the rolling column (27) is provided with a brush (29), and the brush (29) is in contact with the side wall of the protection pipe (10).

6. The rural sewage treatment system of claim 4, wherein: the rolling post (27) is detachably connected with the first plate (25).

7. The rural sewage treatment system of claim 4, wherein: offer groove of stepping down (34) on spacing post (24), be equipped with connecting rod (35) on the lateral wall of second spacing hole (33), the both ends of connecting rod (35) all with the lateral wall contact of second spacing hole (33), connecting rod (35) insert in groove of stepping down (34) and with groove of stepping down (34) sliding fit, be equipped with second rope (36) on the lateral wall of opening (3) end of sewage detritus pond (1), the one end of second rope (36) is equipped with spacing hook (37), spacing hook (37) are hooked connecting rod (35), second rope (36) are in the state of tightening.

8. The rural sewage treatment system of claim 7, wherein: the second rope (36) is a bungee rope.