CN111617550A

CN111617550A - Rural domestic sewage treatment device with prevent blockking up function

Info

Publication number: CN111617550A
Application number: CN202010559954.1A
Authority: CN
Inventors: 李柏青
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-18
Filing date: 2020-06-18
Publication date: 2020-09-04

Abstract

The invention relates to the field of sewage treatment, in particular to a rural domestic sewage treatment device with an anti-blocking function, which comprises a treatment tank, a sewage inlet pipe and a sewage outlet pipe, wherein the sewage inlet pipe and the sewage outlet pipe are arranged at the two longitudinal ends of the treatment tank; the treatment device can effectively avoid the problem of internal blockage through daily maintenance and long-term maintenance.

Description

Rural domestic sewage treatment device with prevent blockking up function

Technical Field

The invention relates to the field of sewage treatment, in particular to a rural domestic sewage treatment device with an anti-blocking function.

Background

In the process of treating domestic sewage, a large amount of solid impurities can be generated due to precipitation, chemical reaction and the like, and the solid impurities can be precipitated, so that a large amount of sludge is generated. The sludge contains a large amount of organic matters and nitrogen, phosphorus and potassium elements, and the COD value is higher, so that the sludge can not reach the national emission standard far away. Since the establishment of municipal sewage treatment plants, people have been working on how to utilize domestic sewage to treat sludge, and in particular, people expect to use domestic sewage to treat sludge to produce fertilizers for agricultural production.

If the sludge is not treated in time, drainage holes are blocked, so that the drainage link is not smooth, the operation of the whole system is influenced, the residual sludge usually contains a large amount of toxic and harmful substances, such as parasitic ova, pathogenic microorganisms, heavy metals and unstabilized organic matters, and if the sludge is not treated and disposed properly, the sludge is directly applied to crops, so that direct or potential pollution is caused to the environment.

Chinese patent cn201821888378.x discloses a rural domestic sewage treatment device with prevent blockking up function, including handling the pond, the top of handling the pond has the lamina tecti through the bolt fastening, and is close to limit portion reservation on the lamina tecti and has the round hole, and the joint has the bucket in the round hole, the top of bucket is provided with the bung, and has driving motor through the bolt fastening in the centre of bung, driving motor's output shaft top is through the fixed transfer line of shaft joint ware, and the circumference outer wall of transfer line is close to the bottom welding and has the round bar, and the pot head of round bar has been cup jointed to the end, the lower surface middle part of lamina tecti has the ladder mounting panel through the bolt fastening, and inlays on the bottommost flat board of ladder mounting panel and is equipped with the sedimentation tank, it has same root conveyer pipe to peg graft.

The treatment apparatus disclosed in this patent is difficult to discharge because sludge inside the treatment apparatus gradually accumulates with use, and is likely to clog between the treatment tank and the filtration tank, and has a short maintenance cycle, a large number of maintenance times, and a high use cost.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a rural domestic sewage treatment device with an anti-blocking function, and the treatment device can effectively avoid the internal blockage problem through daily maintenance and long-term maintenance.

In order to solve the technical problems, the invention provides the following technical scheme:

the utility model provides a rural domestic sewage treatment device with prevent blockking up function, advance the pipe including handling the pond and installing the sewage at the vertical both ends in processing pond, the sewage exit tube, the internally mounted in handling the pond has the filter screen and the filter core of horizontal wall processing pond, the filter screen setting advances one side of pipe near sewage, the filter core setting is in the one side near the sewage exit tube, sewage advances to be provided with between pipe and the filter screen and installs the mud transmission device who handles the inside in pond, the top of filter screen is provided with the washing unit who is used for washing the filter screen.

Preferably, the filter core includes the quartz stone filter core, non-woven fabrics filter core, the active carbon filter core of arranging according to sewage discharge direction order, and quartz stone filter core, non-woven fabrics filter core, active carbon filter core are equidistant distribution side by side.

Preferably, the top of handling the pond is provided with the first top cap of detachable, handles the inside slot that is used for pegging graft filter screen, quartz filter core, non-woven fabrics filter core, active carbon filter core that is provided with of pond.

Preferably, the middle end that the sewage enters the pipe is provided with and advances the inside branch pipeline of intercommunication of pipe with sewage, and sewage advances to install on the pipe and is used for switching sewage to advance the first valve of pipe, installs the second valve that is used for switching branch pipeline on the branch pipeline, and first valve is normally opened, and the second valve is normally closed.

Preferably, sludge transmission device is including the collecting pit, the transmission pipe, helical blade, rotary actuator, be provided with the pit of undercut on the diapire of handling the pond, the pit is located sewage advances between pipe and the filter screen, collecting pit detachably installs inside the handling pond, the transmission pipe runs through the collecting pit and extends to the pit bottom, transmission pipe and collecting pit fixed connection, helical blade is coaxial and the rotation is installed inside the transmission pipe, rotary actuator installs in the collecting pit top, rotary actuator's output and helical blade transmission are connected.

Preferably, the collecting tank is in the shape of a rectangular box with an open top, a beam for bearing the collecting tank is arranged in the treating tank, the collecting tank is hung on the beam, a second top cover for closing the open top of the collecting tank is fixedly mounted at the top of the collecting tank, the rotary driver is fixedly connected with the second top cover, and a working cover is detachably mounted on the second top cover.

Preferably, the bottom wall of the collecting tank is provided with a plurality of first sieve holes vertically penetrating through the collecting tank, and the side wall of the conveying pipe is provided with a plurality of second sieve holes horizontally penetrating through the conveying pipe.

Preferably, the diameters of the transfer pipe and the helical blade are gradually reduced from top to bottom.

Preferably, washing unit is including setting up inlet tube and the catch basin directly over the filter screen, and catch basin horizontal installation is inside handling the pond, and inlet tube fixed mounting is outside in handling the pond, and inlet tube and inside intercommunication of catch basin are provided with the slit below the catch basin, and the slit extends along the width direction of filter screen, and the width of slit is greater than the width of filter screen.

Preferably, still including exhaust gas discharging device, exhaust gas discharging device installs in the one side of handling the pond and being close to the sewage exit tube, exhaust gas discharging device is including the blast pipe, sieve mesh jar, rain-proof lid, the blast pipe with handle pond fixed connection and with handle inside the pond intercommunication, the vertical setting of blast pipe, sieve mesh jar demountable installation is in the top of blast pipe, rain-proof lid demountable installation is in the top of sieve mesh jar, sieve mesh jar is open-top and the body structure that has the sieve mesh all over all around, rain-proof lid is the bamboo hat shape that the diameter is greater than sieve mesh jar, sieve mesh jar and blast pipe socket joint, rain-proof lid and sieve mesh jar socket joint.

Compared with the prior art, the invention has the beneficial effects that:

rural domestic sewage advances to manage through sewage and gets into inside the treatment tank, and sewage at first filters through the filter screen, and the filter screen blocks bold rubbish and mud in the sewage and advances between pipe and the filter screen at sewage, and the sewage after the filtration passes through the sewage exit tube through the filtration of filter core and discharges.

During routine maintenance, the sealing plug at inlet tube top is extracted to the staff, the water pipe inserts the water pipe for the water inlet, the inlet tube is washed by water and is jetted and go out through the slit to the catch basin inside, the surface of the flat high-speed level of slit blowout washing filter screen, the inside of pit is gone into to remaining bold rubbish and mud on filter screen surface, the transmission pipe, helical blade, rotary actuator makes up into screw conveyer, rotary actuator drive helical blade is rotatory, helical blade transmits the inside bold rubbish and the mud of pit inside to the collecting pit along the transmission pipe, when the inside collection of collecting pit is full of mud, the staff can open the work lid, then use the inside accumulation's of collecting pit mud of drain wagon to take away.

When maintaining for a long time, the staff closes first valve and makes sewage advance the pipe and seal, sewage can't flow in, after the inside sewage of pending pond passes through the sewage exit tube evacuation, the staff takes the filter screen, the filter core out, then abandon the filter screen, the filter core recycles after perhaps wasing, insert clean water source with the branch pipe after that, reopen the second valve, clean water source passes through the branch pipe way, sewage advances the pipe and spouts the washing to the processing pond inside, wash the processing pond, wash the filter screen of accomplishing back repacking change, the filter core.

1. The treatment device can effectively avoid the problem of internal blockage through daily maintenance and long-term maintenance;

2. the treatment tank of the treatment device is integrated and multifunctional, and the problem of blockage of a communication pipeline between the treatment tanks with single functions is effectively avoided;

3. the treatment device can be fully automatically maintained daily, the long-term maintenance interval is long, and the maintenance cost is low.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a cross-sectional view at section A-A of FIG. 2;

FIG. 4 is a perspective sectional view at section A-A of FIG. 2;

FIG. 5 is a partial enlarged view of FIG. 3 at B;

FIG. 6 is an enlarged view of a portion of FIG. 3 at C;

FIG. 7 is an exploded perspective view of the exhaust gas discharge device of the present invention;

FIG. 8 is a front view of the sludge transport apparatus of the present invention;

FIG. 9 is a cross-sectional view at section D-D of FIG. 8;

FIG. 10 is a perspective sectional view at section D-D of FIG. 8;

the reference numbers in the figures are:

1-sewage inlet pipe; 1 a-branch line; 1 b-a first valve; 1 c-a second valve;

2-a treatment tank; 2 a-a first cap; 2 b-a slot; 2b 1-inclined slot; 2b 2-vertical slot; 2 c-pits;

3-a sludge conveying device; 3 a-a collection tank; 3a 1-second header; 3a 2-working lid; 3a3 — first mesh; 3 b-a transfer pipe; 3b1 — second mesh; 3 c-helical blades; 3 d-a rotary drive;

4-filtering with a filter screen;

5-a washing device; 5 a-a water inlet pipe; 5 b-a water storage tank; 5 c-a slit;

6-a filter element; 6 a-a quartz stone filter element; 6 b-a non-woven filter element; 6 c-an activated carbon filter element;

7-an exhaust gas discharge device; 7 a-an exhaust pipe; 7 b-a mesh tank; 7 c-a rain cover;

8-a sewage outlet pipe.

Detailed Description

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

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The utility model provides a rural domestic sewage treatment device with prevent blockking up function, as shown in figure 1, 2, 3, 4, advance pipe 1 including handling pond 2 and the sewage of installing at the vertical both ends of handling pond 2, sewage exit tube 8, the internally mounted of handling pond 2 has filter screen 4 and the filter core 6 of horizontal wall processing pond 2, filter screen 4 sets up and advances one side of pipe 1 near sewage, filter core 6 sets up in the one side of being close to sewage exit tube 8, sewage advances to be provided with between pipe 1 and the filter screen 4 and installs the mud transmission device 3 of 2 inside in handling pond, the top of filter screen 4 is provided with washing unit 5 that is used for washing filter screen 4.

Rural domestic sewage enters pipe 1 through sewage and enters into inside treatment tank 2, sewage at first filters through filter screen 4, filter screen 4 blocks bold rubbish and the mud in the sewage and advances between pipe 1 and the filter screen 4 at sewage, sewage after the filtration passes through sewage exit tube 8 through the filtration of filter core 6 and discharges, washing unit 5 regularly washes filter screen 4, wash the work end of mud transmission device 3 with adnexed bold rubbish and mud on the filter screen 4, mud transmission device 3 regularly takes bold rubbish and mud out, thereby effectively avoided the problem that filter screen 4 blockked up.

Specifically, as shown in fig. 4, the filter element 6 includes a quartz filter element 6a, a non-woven fabric filter element 6b, and an activated carbon filter element 6c, which are arranged in sequence along the sewage discharge direction, and the quartz filter element 6a, the non-woven fabric filter element 6b, and the activated carbon filter element 6c are distributed in parallel at equal intervals.

The quartz stone filter element 6a and the non-woven fabric filter element 6b are used for filtering fine impurities in the sewage, and the active carbon filter element 6c is used for absorbing peculiar smell in the sewage.

Specifically, as shown in fig. 3, a detachable first top cover 2a is disposed at the top of the treatment tank 2, and a slot 2b for inserting a filter screen 4, a quartz stone filter element 6a, a non-woven fabric filter element 6b, and an activated carbon filter element 6c is disposed inside the treatment tank 2.

The staff can open first top cap 2a and expose filter screen 4, quartz filter core 6a, non-woven fabrics filter core 6b, activated carbon filter core 6c, thereby to filter screen 4, quartz filter core 6a, non-woven fabrics filter core 6b, activated carbon filter core 6c changes, filter screen 4 is fixed through slope slot 2b1, the slope of filter screen 4 sets up, quartz filter core 6a, non-woven fabrics filter core 6b, activated carbon filter core 6c is fixed through three vertical slot 2b2, quartz filter core 6a, non-woven fabrics filter core 6b, the equal vertical setting of activated carbon filter core 6 c.

Specifically, as shown in fig. 1, 3 and 4, a branch pipeline 1a communicated with the inside of the sewage inlet pipe 1 is arranged at the middle end of the sewage inlet pipe 1, a first valve 1b for opening and closing the sewage inlet pipe 1 is installed on the sewage inlet pipe 1, a second valve 1c for opening and closing the branch pipeline 1a is installed on the branch pipeline 1a, the first valve 1b is normally opened, and the second valve 1c is normally closed.

Branch pipeline 1a is used for introducing the clear water of thoughtlessly having the sanitizer, change filter screen 4, before filter core 6, the staff closes first valve 1b earlier and makes sewage advance tub 1 to seal, sewage can't flow in, after the sewage of 2 inside in pending pond passes through the evacuation of sewage exit tube 8, the staff is with filter screen 4, filter core 6 takes out, insert clean water source with branch pipeline 1a after that, open second valve 1c again, clean water source passes through branch pipeline 1a, sewage advances pipe 1 and spouts into 2 inside in processing pond and wash processing pond 2, wash the filter screen 4 of change of reloading after finishing, filter core 6.

Specifically, as shown in fig. 3, 4, 8, 9, and 10, the sludge transporting device 3 includes a collecting tank 3a, a transporting pipe 3b, a spiral blade 3c, and a rotary driver 3d, a concave pit 2c that is concave downward is provided on the bottom wall of the treating tank 2, the concave pit 2c is located between the sewage inlet pipe 1 and the filter screen 4, the collecting tank 3a is detachably installed inside the treating tank 2, the transporting pipe 3b extends to the bottom of the concave pit 2c through the collecting tank 3a, the transporting pipe 3b is fixedly connected with the collecting tank 3a, the spiral blade 3c is coaxially and rotatably installed inside the transporting pipe 3b, the rotary driver 3d is installed on the top of the collecting tank 3a, and the output end of the rotary driver 3d is in transmission connection with the spiral blade 3 c.

Big piece rubbish and mud in the filter screen 4 filtration sewage, at the daily in-process that washs filter screen 4 of washing unit 5, the inside of pit 2c is gone into to the remaining big piece rubbish in filter screen 4 surface and mud, transmission pipe 3b, helical blade 3c, rotary actuator 3d makes up into screw conveyer, rotary actuator 3d drive helical blade 3c is rotatory, helical blade 3c transmits the inside big piece rubbish of pit 2c and mud along transmission pipe 3b to the inside of collecting pit 3a, wait for the staff to handle, rotary actuator 3d accessible timer regular switching, thereby realize the function of full-automatic pumping dirt.

Specifically, as shown in fig. 8, 9, and 10, the collecting tank 3a is in the shape of a rectangular box with an open top, a cross beam for carrying the collecting tank 3a is disposed inside the treating tank 2, the collecting tank 3a is suspended on the cross beam, a second top cover 3a1 for closing the open top of the collecting tank 3a is fixedly mounted on the top of the collecting tank 3a, the rotary driver 3d is fixedly connected to the second top cover 3a1, and the second top cover 3a1 is detachably mounted with a working cover 3a 2.

Collecting pit 3a can be taken out from treating pit 2 inside from bottom to top, wash, maintain, put into on the inside crossbeam of treating pit 2 after the maintenance finishes, second top cap 3a1 is used for fixed mounting rotary actuator 3d, rotary actuator 3d is including servo motor and the rigid coupling who connects servo motor output shaft and helical blade 3c main shaft, when collecting pit 3a is inside to collect full mud, the staff can open working cover 3a2, then use the interior accumulated mud of collecting pit 3a to take away of dirty car.

Specifically, as shown in fig. 8, 9 and 10, the bottom wall of the collecting tank 3a is provided with a plurality of first sieve holes 3a3 vertically penetrating through the collecting tank 3a, and the side wall of the conveying pipe 3b is provided with a plurality of second sieve holes 3b1 horizontally penetrating through the conveying pipe 3 b.

The spiral conveyor formed by the combination of the conveying pipe 3b, the spiral blades 3c and the rotary driver 3d extracts not all sludge or large garbage, but sewage is extracted into the collecting tank 3a along with the sludge, and in order to prolong the interval time for cleaning the collecting tank 3a by workers and reduce the maintenance cost, the sewage in the collecting tank 3a and the conveying pipe 3b needs to be discharged, so that only large garbage and drier sludge are accumulated in the collecting tank 3a, and therefore, the collecting tank 3a and the conveying pipe 3b are provided with the first sieve holes 3a3 and the second sieve holes 3b1 for discharging the sewage in the sludge.

Specifically, not shown in the figure, the transfer pipe 3b and the spiral blade 3c are gradually reduced in diameter from top to bottom.

The diameters of the conveying pipe 3b and the spiral blades 3c are gradually reduced from the suction end to the discharge end, so that moisture in sludge sucked by the sludge conveying device 3 can be squeezed out, the full collecting speed of the collecting pool 3a is reduced, and the maintenance frequency is reduced.

Specifically, as shown in fig. 3 and 6, the flushing device 5 includes a water inlet pipe 5a and a water storage tank 5b which are arranged right above the filter screen 4, the water storage tank 5b is horizontally arranged inside the treatment tank 2, the water inlet pipe 5a is fixedly arranged outside the treatment tank 2, the water inlet pipe 5a is communicated with the water storage tank 5b, a slit 5c is arranged below the water storage tank 5b, the slit 5c extends along the width direction of the filter screen 4, and the width of the slit 5c is greater than the width of the filter screen 4.

The sealing plug is covered on the inlet tube 5a under the daily condition, prevents that the inside foul smell of treatment pond 2 from outwards spilling through inlet tube 5a, and when the filter screen 4 need be washed, the staff extracts the sealing plug at inlet tube 5a top, and inlet tube 5a inserts the water pipe, and inlet tube 5a washes by water and sprays through slit 5c and goes out to catch basin 5b is inside, and the flat high-speed level of slit 5c blowout washes the surface of filter screen 4.

The water inlet pipe 5a can also be directly communicated with tap water through an electromagnetic valve, and the electromagnetic valve is periodically opened and closed, so that full-automatic flushing is realized.

Specifically, as shown in fig. 3, 5, 7, still including exhaust gas discharging device 7, exhaust gas discharging device 7 installs in the one side that is close to sewage exit tube 8 in handling pond 2, exhaust gas discharging device 7 is including blast pipe 7a, sieve mesh jar 7b, rain-proof lid 7c, blast pipe 7a with handle 2 fixed connection in pond and with handle 2 inside intercommunications in pond, the vertical setting of blast pipe 7a, sieve mesh jar 7b demountable installation is in the top of blast pipe 7a, rain-proof lid 7c demountable installation is in the top of sieve mesh jar 7b, sieve mesh jar 7b is open-top and the body structure that has the sieve mesh all over around, rain-proof lid 7c is the bamboo hat shape that the diameter is greater than sieve mesh jar 7b, sieve mesh jar 7b and blast pipe 7a socket joint are connected, rain-proof lid 7c and sieve mesh jar 7b socket joint are connected.

Blast pipe 7a is used for discharging the inside waste gas of handling pond 2 to the outside of handling pond 2, avoid handling 2 inside accumulations in pond, sieve mesh jar 7b is inside to be filled with active carbon, be used for the exhaust waste gas deodorization of blast pipe 7a, rain-proof lid 7c shroud is used for rain-proofly at sieve mesh jar 7 b's top, when needing to change active carbon, the staff extracts sieve mesh jar 7b from blast pipe 7a top, then extract rain-proof lid 7c from sieve mesh jar 7b top, fill new after pouring out the inside active carbon of sieve mesh jar 7b after then can.

The working principle of the invention is as follows:

rural domestic sewage enters pipe 1 through sewage and enters into inside treatment tank 2, and sewage at first filters through filter screen 4, and filter screen 4 blocks bold rubbish and mud in the sewage and advances between pipe 1 and filter screen 4 at sewage, and the sewage after the filtration passes through sewage exit tube 8 through the filtration of filter core 6 and discharges.

During routine maintenance, a worker pulls out a sealing plug at the top of the water inlet pipe 5a, the water inlet pipe 5a is connected with a water pipe, the water inlet pipe 5a flushes water into the water storage tank 5b and sprays the water out through the slit 5c, the slit 5c sprays the flat high-speed horizontal washing to the surface of the filter screen 4, large garbage and sludge remaining on the surface of the filter screen 4 are flushed into the pit 2c, the conveying pipe 3b, the spiral blade 3c and the rotary driver 3d form a spiral conveying machine, the rotary driver 3d drives the spiral blade 3c to rotate, the spiral blade 3c conveys the large garbage and sludge inside the pit 2c to the inside of the collecting pool 3a along the conveying pipe 3b, when the inside of the collecting pool 3a is full of sludge, the worker can open the working cover 3a2, and then uses a sewage suction vehicle to pump away the sludge accumulated inside the collecting pool 3 a.

During long-term maintenance, the staff closes first valve 1b and makes sewage advance pipe 1 seal, sewage can't flow in, after the sewage of 2 inside pending ponds passes through the evacuation of sewage exit tube 8, the staff takes filter screen 4, filter core 6 out, then abandon filter screen 4, filter core 6 or recycle after wasing, then insert clean water source with branch pipeline 1a, open second valve 1c again, clean water source advances pipe 1 through branch pipeline 1a, sewage and spouts into 2 inside processing ponds 2 and washs processing ponds 2, wash the filter screen 4 of going into the change, filter core 6 again after finishing.

Compared with the prior art, the invention has the beneficial effects that:

Claims

1. The utility model provides a rural domestic sewage treatment device with prevent blockking up function, a serial communication port, enter pipe (1) including handling pond (2) and installing the sewage at the vertical both ends of handling pond (2), sewage exit tube (8), the internally mounted of handling pond (2) has filter screen (4) and filter core (6) of horizontal wall processing pond (2), filter screen (4) set up and are advancing one side of pipe (1) being close to sewage, filter core (6) set up and are being close to one side of sewage exit tube (8), sewage advances to be provided with between pipe (1) and filter screen (4) and installs mud transmission device (3) in handling pond (2) inside, the top of filter screen (4) is provided with washing unit (5) that are used for washing filter screen (4).

2. The rural domestic sewage treatment device with the anti-clogging function according to claim 1, wherein the filter element (6) comprises a quartz filter element (6 a), a non-woven fabric filter element (6 b) and an activated carbon filter element (6 c) which are arranged in sequence according to the sewage discharge direction, and the quartz filter element (6 a), the non-woven fabric filter element (6 b) and the activated carbon filter element (6 c) are distributed side by side at equal intervals.

3. The rural domestic sewage treatment device with the anti-clogging function according to claim 2, wherein a detachable first top cover (2 a) is arranged at the top of the treatment tank (2), and a slot (2 b) for inserting the filter screen (4), the quartz stone filter element (6 a), the non-woven fabric filter element (6 b) and the activated carbon filter element (6 c) is arranged inside the treatment tank (2).

4. The rural domestic sewage treatment device with the anti-clogging function according to claim 1, wherein a branch pipeline (1 a) communicated with the interior of the sewage inlet pipe (1) is arranged at the middle end of the sewage inlet pipe (1), a first valve (1 b) for opening and closing the sewage inlet pipe (1) is installed on the sewage inlet pipe (1), a second valve (1 c) for opening and closing the branch pipeline (1 a) is installed on the branch pipeline (1 a), the first valve (1 b) is normally opened, and the second valve (1 c) is normally closed.

5. The rural domestic sewage treatment device with the anti-clogging function according to claim 1, the sludge conveying device is characterized in that the sludge conveying device (3) comprises a collecting pool (3 a), a conveying pipe (3 b), a spiral blade (3 c) and a rotary driver (3 d), a pit (2 c) which is sunken downwards is formed in the bottom wall of the treating pool (2), the pit (2 c) is located between a sewage inlet pipe (1) and a filter screen (4), the collecting pool (3 a) is detachably installed inside the treating pool (2), the conveying pipe (3 b) penetrates through the collecting pool (3 a) and extends to the bottom of the pit (2 c), the conveying pipe (3 b) is fixedly connected with the collecting pool (3 a), the spiral blade (3 c) is coaxially and rotatably installed inside the conveying pipe (3 b), the rotary driver (3 d) is installed at the top of the collecting pool (3 a), and the output end of the rotary driver (3 d) is in transmission connection with the spiral blade (3 c).

6. The rural domestic sewage treatment device with the anti-clogging function according to claim 5, wherein the collecting tank (3 a) is in the shape of a rectangular box with an open top, a cross beam for carrying the collecting tank (3 a) is arranged inside the treatment tank (2), the collecting tank (3 a) is hung on the cross beam, a second top cover (3 a 1) for closing the open top of the collecting tank (3 a) is fixedly arranged at the top of the collecting tank (3 a), the rotary driver (3 d) is fixedly connected with the second top cover (3 a 1), and a working cover (3 a 2) is detachably arranged on the second top cover (3 a 1).

7. The rural domestic sewage treatment device with the anti-clogging function according to claim 6, wherein the bottom wall of the collecting tank (3 a) is provided with a plurality of first sieve holes (3 a 3) vertically penetrating through the collecting tank (3 a), and the side wall of the conveying pipe (3 b) is provided with a plurality of second sieve holes (3 b 1) horizontally penetrating through the conveying pipe (3 b).

8. The rural domestic sewage treatment device with anti-clogging function according to claim 7, wherein the diameters of the transmission pipe (3 b) and the helical blade (3 c) are gradually reduced from top to bottom.

9. The rural domestic sewage treatment device with the anti-clogging function according to claim 1, wherein the flushing device (5) comprises a water inlet pipe (5 a) and a water storage tank (5 b) which are arranged right above the filter screen (4), the water storage tank (5 b) is horizontally arranged inside the treatment tank (2), the water inlet pipe (5 a) is fixedly arranged outside the treatment tank (2), the water inlet pipe (5 a) is communicated with the inside of the water storage tank (5 b), a slit (5 c) is arranged below the water storage tank (5 b), the slit (5 c) extends along the width direction of the filter screen (4), and the width of the slit (5 c) is greater than the width of the filter screen (4).

10. The rural domestic sewage treatment device with the anti-clogging function according to claim 1, further comprising an exhaust gas discharging device (7), wherein the exhaust gas discharging device (7) is installed at one side of the treatment tank (2) close to the sewage outlet pipe (8), the exhaust gas discharging device (7) comprises an exhaust pipe (7 a), a sieve mesh tank (7 b) and a rain cover (7 c), the exhaust pipe (7 a) is fixedly connected with the treatment tank (2) and is communicated with the inside of the treatment tank (2), the exhaust pipe (7 a) is vertically arranged, the sieve mesh tank (7 b) is detachably installed at the top of the exhaust pipe (7 a), the rain cover (7 c) is detachably installed at the top of the sieve mesh tank (7 b), the sieve mesh tank (7 b) is a tank body structure with an opening at the top and sieve meshes distributed on the whole body, the rain cover (7 c) is in a bamboo hat shape with a diameter larger than that of the sieve mesh tank (7 b), the sieve mesh tank (7 b) is connected with the exhaust pipe (7 a) in a socket and spigot manner, and the rain-proof cover (7 c) is connected with the sieve mesh tank (7 b) in a socket and spigot manner.