阅读说明：本技术 链式刮板污水管道疏通机 (Chain type scraper dredging machine for sewage pipeline ) 是由 康健 肖青显 林焕旭 李瑛� 李琛 于 2021-07-27 设计创作，主要内容包括：本发明公开了管道疏通机技术领域的链式刮板污水管道疏通机,本发明通过设置防护环,防护环有利于将污泥进行阻挡,防止污泥会流到导向链轮的轮齿之间,不需要对导向链轮进行清理,减少了工作人员的工作量；并且防护环会随着导向链轮一起转动,防护环会在滑动杆与引导槽的作用下移动到不同的位置向导向链轮轮齿内侧内收缩或向外侧张开,一方面防护环收缩有利于使防护环能避开刮板并且给污泥让出空间,避免在防护环移动到右侧时刮板与污泥会将防护环挤压变形,导致污泥流入防护环内,另一方面在防护环向外侧张开时,防护环会将导向链轮轮齿表面的污泥进行清理,有利于使导向链轮轮齿保持清洁,便于后续的清理。(The invention discloses a chain type scraper blade sewage pipeline dredging machine in the technical field of pipeline dredging machines, and the chain type scraper blade sewage pipeline dredging machine is characterized in that a protective ring is arranged, so that the protective ring is favorable for blocking sludge, the sludge is prevented from flowing between gear teeth of a guide chain wheel, the guide chain wheel is not required to be cleaned, and the workload of workers is reduced; and the guard ring can rotate along with the leading sprocket together, the guard ring can move the inboard internal contraction of position guide sprocket teeth of a cogwheel of difference or open to the outside under the effect of slide bar and guiding groove, the guard ring shrink is favorable to making the guard ring can avoid the scraper blade and give mud and give way the space on the one hand, the scraper blade can be with guard ring extrusion deformation with mud when avoiding moving the right side at the guard ring, lead to in mud inflow guard ring, on the other hand when the guard ring opens to the outside, the guard ring can clear up the mud on leading sprocket teeth of a cogwheel tooth surface, be favorable to making the leading sprocket teeth of a cogwheel keep clean, be convenient for subsequent clearance.)

1. Chain scraper blade sewer pipe dredging machine, including sewage pipes (1) and chain (2), its characterized in that: the right end of the sewage discharge pipeline (1) is provided with a sewage discharge outlet (3), the middle position of the sewage discharge pipeline (1) is communicated with a sewage discharge shell (4), the inner walls of the front side and the rear side of the sewage discharging shell (4) are jointly and rotatably connected with a guide chain wheel (5), the top of the sewage discharging shell (4) is communicated with a discharging pipe (6), the chain (2) is positioned in the sewage discharging pipeline (1), the sewage discharging shell (4) and the discharging pipe (6), the chain (2) is meshed with the guide chain wheel (5), the surface of one half of the total length of the chain (2) is fixedly connected with scrapers (7) which are arranged at equal intervals, the surface of the guide chain wheel (5) is provided with a protection mechanism for protecting the gear teeth of the guide chain wheel (5), the top of the inner wall of the sewage discharging shell (4) is provided with a blocking mechanism which blocks sludge and prevents the sludge from entering the top of the protection mechanism corresponding to the position of the discharging pipe (6).

2. The chain scraper sewer dredger of claim 1, wherein: protection machanism includes elastic guard ring (8), guard ring (8) are located the surface of leading sprocket (5), and the teeth of a cogwheel of leading sprocket (5) runs through guard ring (8), the front and back terminal surface of guard ring (8) with the inner wall laminating of blowdown shell (4), the inboard of guard ring (8) corresponds the equal fixedly connected with slide bar (9) of equidistant range of leading sprocket (5) teeth of a cogwheel homonymy position, guiding groove (10) have all been seted up to inner wall around blowdown shell (4), guiding groove (10) are anomalous annular, both ends all slide in guiding groove (10) around slide bar (9).

3. The chain scraper sewer dredger of claim 2, characterized in that: stop mechanism including stopping block (11), stop block (11) fixed connection be in the inner wall top of blowdown shell (4), stop block (11) and be located the left side bottom of discharging pipe (6), and the right side that stops block (11) is the arc, stop the bottom of block (11) with the surface contact of guard ring (8), the inner wall corresponds around blowdown shell (4) the equal fixedly connected with in guiding groove (10) outside position blocks ring (12) the same with guiding groove (10) shape, block ring (12) with the inner wall laminating at both ends around guard ring (8).

4. The chain scraper sewer dredger of claim 3, wherein: the utility model discloses a blowdown shell (4) inner wall top, including blowdown shell (4), discharging pipe (6), first spout (13) position has all been seted up to both sides position around the blowdown shell (4) inner wall top, first spout (13) right side extends to discharging pipe (6) position, sliding connection has first rack (14) in first spout (13), the left end of first rack (14) passes through first spring (15) and first spout (13) inner wall elastic connection, the right side part of first rack (14) does not have tooth and the right-hand member of first rack (14) extends to discharging pipe (6) position, first rack (14) tip articulates there is telescopic lifter (16), the bottom of lifter (16) with the right side of stopping block (11) is articulated, stop block (11) and seted up abdicating groove (17) corresponding to lifter (16) position, blowdown shell (4) inner wall top corresponds two first spout (13) middle relative one side and has all seted up spread groove (18), the connecting grooves (18) are communicated with a first sliding groove (13), rotating gears (19) are rotatably connected in the two connecting grooves (18), the rotating gears (19) are meshed with a first rack (14), second sliding grooves (20) are formed in the top of the inner wall of the sewage discharging shell (4) corresponding to the opposite sides of the two connecting grooves (18), the second sliding grooves (20) are communicated with the connecting grooves (18), second racks (21) are slidably connected in the second sliding grooves (20), the second racks (21) are meshed with the rotating gears (19), telescopic cleaning brushes (22) are fixedly connected to the bottoms of the two second racks (21) together, and the bottoms of the cleaning brushes (22) are in contact with the surface of the protective ring (8); extrusion mouth (23) have been seted up to the intermediate position of extrusion piece, it has barrier plate (24) to correspond extrusion mouth (23) position hinge at blowdown shell (4) inner wall top, barrier plate (24) will extrude mouth (23) and block, and the bottom and the guard ring (8) surface laminating of barrier plate (24), first sliding tray (25) have been seted up in the left side of barrier plate (24), there is stripper plate (27) of L shape through sliding column (26) sliding connection in first sliding tray (25), the top of stripper plate (27) slides at the inner wall top of blowdown shell (4), second sliding tray (28) have been seted up to corresponding stripper plate (27) tip position in blowdown shell (4) inner wall top, second spring (29) and second sliding tray (28) inner wall elastic connection are passed through to the right side of stripper plate (27).

5. The chain scraper sewer dredger of claim 2, characterized in that: the slide bar (9) is far away from one side of the guide chain wheel (5) and is fixedly connected with an elastic supporting plate (30), and the supporting plate (30) is attached to the inner side of the protective ring (8).

6. The chain scraper sewer dredger of claim 1, wherein: the size of the scraper (7) gradually changes from small to large to be suitable for the size of the sewage discharge pipeline (1).

7. The chain scraper sewer dredger of claim 1, wherein: the top of the sewage discharging shell (4) and the left side of the discharging pipe (6) are fixedly connected with a water storage tank (31) together, a water inlet (32) is formed in the left side of the discharging pipe (6), a filter screen (33) is fixedly connected in the water inlet (32), a first flushing hole (34) is formed in the top of the sewage discharging shell (4), a sliding plate (35) is connected to the top of the sewage discharging shell (4) in a sliding mode, the left side of the sliding plate (35) is elastically connected with the inner wall of the water storage tank (31) through a third spring (36), a second flushing hole (37) is formed in the surface of the sliding plate (35), the second flushing hole (37) is staggered with the first flushing hole (34), the right side of the sliding plate (35) penetrates through the discharging pipe (6) and extends into the discharging pipe (6), and an inclined plane is arranged at the right end of the sliding plate (35).

Technical Field

The invention relates to the technical field of pipeline dredging machines, in particular to a chain type scraper sewage pipeline dredging machine.

Background

Along with the rapid development of industry, the discharge amount of sewage is increased, sludge, industrial bottom slag and the like in the sewage can be deposited on the inner wall of a sewage pipeline in the discharge process of the sewage, the inner wall of the sewage pipeline can be gradually blocked in the long-time use process, and the sewage cannot be discharged quickly; at present, sewage pipelines are generally dredged by adopting a plurality of modes such as manual bamboo strip type, high-pressure pump flushing, electric manganese steel spring dredging machine and the like.

In the prior art, when a sewage pipeline is cleaned, a chain type scraper sewage pipeline dredging machine is generally adopted to achieve a better cleaning effect, the dredging machine is generally arranged in the pipeline, a scraper is driven by a chain to clean the sewage pipeline, a guide chain wheel is required to be arranged at the head and the tail of the sewage pipeline to guide the chain to turn with the scraper, but when the guide chain wheel is separated from the chain, sludge on the scraper can flow between teeth of the guide chain wheel and rotate along with the teeth of the teeth, and can not be discharged, after the subsequent cleaning is finished, the dredging machine stops working, the sludge between the guide chain wheels can be gradually condensed, so that the guide chain wheel can not normally rotate, even the guide chain wheel is damaged, the subsequent cleaning and dredging work is influenced, and the guide chain wheel is arranged in the sewage pipeline and is not easy to clean, so that the guide chain wheel can be completely disassembled and cleaned once the whole sewage pipeline is damaged, delays production and is costly.

Based on the above, the invention designs the chain type scraper sewage pipeline dredging machine to solve the problems.

Disclosure of Invention

The invention aims to provide a chain type scraper dredging machine for a sewage pipeline, which aims to solve the problems that the prior art provides a chain type scraper dredging machine for the sewage pipeline in order to achieve better cleaning effect when the sewage pipeline is cleaned, the dredging machine is generally arranged in the pipeline, a scraper is driven by a chain to clean the sewage pipeline, a guide chain wheel is required to be arranged at the head and the tail of the sewage pipeline to guide the chain and the scraper to turn, when the guide chain wheel is separated from the chain, sludge on the scraper flows between gear teeth of the guide chain wheel to rotate along with the gear teeth and cannot be discharged, after the subsequent cleaning is finished, the dredging machine stops working, the sludge between the guide chain wheels can be gradually condensed, the guide chain wheel cannot normally rotate, even the guide chain wheel is damaged, and the subsequent cleaning and dredging work is influenced, and the leading sprocket sets up in the sewage pipe and it is difficult to clear up, this leads to leading sprocket in case damage whole sewage pipe probably needs whole dismantlement clearance, delays production and the huge problem of cost.

In order to achieve the purpose, the invention provides the following technical scheme: chain scraper blade sewage pipe dredging machine, including sewage pipes and chain, the sewage pipes right-hand member is the drain, sewage pipes's intermediate position intercommunication has the blowdown shell, the common rotation of both sides inner wall is connected with guide sprocket around the blowdown shell, the top intercommunication of blowdown shell has the discharging pipe, the chain is located sewage pipes, blowdown shell and discharging pipe, the chain meshes with guide sprocket, the scraper blade that half fixed surface of chain total length is connected with the equidistance and arranges, guide sprocket surface is equipped with the protection machanism that protects guide sprocket's the teeth of a cogwheel, the corresponding discharging pipe position in blowdown shell inner wall top is equipped with the stop mechanism that blocks mud.

As a further scheme of the invention, the protection mechanism comprises an elastic protection ring, the protection ring is positioned on the surface of the guide chain wheel, the gear teeth of the guide chain wheel penetrate through the protection ring, the front end face and the rear end face of the protection ring are attached to the inner wall of the sewage discharging shell, sliding rods which are arranged at equal intervals are fixedly connected to the inner side of the protection ring at the same side positions corresponding to the gear teeth of the guide chain wheel, guide grooves are formed in the front inner wall and the rear inner wall of the sewage discharging shell, the guide grooves are irregular annular, and the front end and the rear end of each sliding rod slide in the guide grooves.

As a further scheme of the invention, the blocking mechanism comprises a blocking block, the blocking block is fixedly connected to the top of the inner wall of the sewage discharge shell, the blocking block is positioned at the bottom of the left side of the discharge pipe, the right side of the blocking block is arc-shaped, the bottom of the blocking block is in contact with the surface of the protection ring, the blocking rings with the same shape as the guide grooves are fixedly connected to the positions, corresponding to the outer sides of the guide grooves, of the front inner wall and the rear inner wall of the sewage discharge shell, and the blocking rings are attached to the inner walls of the front end and the rear end of the protection ring.

As a further scheme of the invention, the front side and the rear side of the top of the inner wall of the sewage discharging shell are respectively provided with a first sliding groove, the right side of the first sliding groove extends to the position of the discharging pipe, a first rack is connected in the first sliding groove in a sliding manner, the left end of the first rack is elastically connected with the inner wall of the first sliding groove through a first spring, the right side part of the first rack is free from teeth, the right end of the first rack extends to the position of the discharging pipe, the end part of the first rack is hinged with a telescopic extrusion rod, the bottom of the extrusion rod is hinged with the right side of the blocking block, the blocking block is provided with a yielding groove corresponding to the position of the extrusion rod, one side of the top of the inner wall of the sewage discharging shell corresponding to the middle opposite of the two first sliding grooves is provided with a connecting groove, the connecting groove is communicated with the first sliding groove, and a rotating gear is rotatably connected in the two connecting grooves, the rotating gear is meshed with the first rack, second sliding grooves are formed in the top of the inner wall of the sewage discharging shell corresponding to the opposite sides of the two connecting grooves and communicated with the connecting grooves, second racks are connected in the second sliding grooves in a sliding mode and meshed with the rotating gear, telescopic cleaning brushes are fixedly connected to the bottoms of the two second racks together, and the bottoms of the cleaning brushes are in contact with the surface of the protection ring; the middle position of extrusion piece has been seted up the extrusion mouth, the blowdown shell inner wall top corresponds that extrusion mouth position articulates there is the barrier plate, the barrier plate blocks the extrusion mouth, and the bottom and the laminating of guard ring surface of barrier plate, first sliding tray has been seted up in the left side of barrier plate, there is the stripper plate of L shape through sliding column sliding connection in the first sliding tray, the top of stripper plate slides at the inner wall top of blowdown shell, the blowdown shell inner wall top corresponds the stripper plate tip position and has seted up the second sliding tray, the right side of stripper plate is passed through second spring and second sliding tray inner wall elastic connection.

As a further scheme of the invention, one side of the sliding rod, which is far away from the guide chain wheel, is fixedly connected with an elastic supporting plate, and the supporting plate is attached to the inner side of the protective ring.

As a further scheme of the invention, the size of the scraper gradually changes from small to large to be suitable for the size of the sewage discharge pipeline.

As a further scheme of the invention, a water storage tank is fixedly connected to the top of the sewage discharging shell and the left side of the discharging pipe together, a water inlet is formed in the left side of the discharging pipe, a filter screen is fixedly connected to the water inlet, a first flushing hole is formed in the top of the sewage discharging shell, a sliding plate is slidably connected to the top of the sewage discharging shell, the left side of the sliding plate is elastically connected to the inner wall of the water storage tank through a third spring, a second flushing hole is formed in the surface of the sliding plate, the second flushing hole is staggered with the first flushing hole, the right side of the sliding plate penetrates through the discharging pipe and extends into the discharging pipe, and an inclined plane is arranged at the right end of the sliding plate.

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

1. according to the invention, the protective ring is arranged, so that the protective ring is beneficial to blocking sludge, the sludge is prevented from flowing between the gear teeth of the guide chain wheel, the guide chain wheel does not need to be cleaned, and the workload of workers is reduced; and the guard ring can rotate along with the leading sprocket together, the guard ring can move the inboard internal contraction of position guide sprocket teeth of a cogwheel of difference or open to the outside under the effect of slide bar and guiding groove, the guard ring shrink is favorable to making the guard ring can avoid the scraper blade and give mud and give way the space on the one hand, the scraper blade can be with guard ring extrusion deformation with mud when avoiding moving the right side at the guard ring, lead to in mud inflow guard ring, on the other hand when the guard ring opens to the outside, the guard ring can clear up the mud on leading sprocket teeth of a cogwheel tooth surface, be favorable to making the leading sprocket teeth of a cogwheel keep clean, be convenient for subsequent clearance.

2. According to the invention, the blocking block and the blocking ring are arranged, so that the blocking block can block the gap on the right side of the upper end of the protection ring, and the phenomenon that when sludge moves to the right side of the upper end of the protection ring, the sludge can be attached to the surface of the protection ring to move together, so that the sludge still remains in the sewage discharge shell and cannot be discharged is avoided; the barrier ring can avoid the gap to appear in the front and back both sides of guard ring, leads to mud can flow into between the teeth of a cogwheel of leading sprocket.

3. According to the invention, the cleaning brush is moved by the movement of the scraper, the cleaning brush can brush and clean sludge on the surface of the protective plate, so that the surface of the protective ring is kept clean, the sludge is prevented from remaining on the surface of the protective ring, after one-time cleaning is finished, the sludge can be condensed to cause the hardening of the protective ring, the subsequent cleaning is influenced, the condensed and hardened sludge can abrade the barrier block to cause the increase of a gap between the barrier block and the protective ring, and more sludge can be attached to the surface of the protective ring during the subsequent cleaning.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

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

FIG. 2 is a schematic view of the general structure of the present invention, taken in section;

FIG. 3 is a schematic view of the structure at A in FIG. 2;

FIG. 4 is a schematic view of the interior of the blow-down housing of the present invention (with the guide sprockets and guard ring hidden);

FIG. 5 is a schematic view of the structure at B in FIG. 4;

FIG. 6 is a schematic structural view showing the positional relationship between the stopper, the pressing rod, the stopper plate and the sliding plate according to the present invention;

FIG. 7 is a schematic view of a guard ring according to the present invention;

FIG. 8 is a schematic structural view of the present invention with the water storage tank cut away;

fig. 9 is a schematic structural view of the extrusion plate and the barrier plate after explosion.

In the drawings, the components represented by the respective reference numerals are listed below:

the sewage discharge device comprises a sewage discharge pipeline 1, a chain 2, a sewage discharge port 3, a sewage discharge shell 4, a guide chain wheel 5, a discharge pipe 6, a scraper 7, a protective ring 8, a sliding rod 9, a guide groove 10, a blocking block 11, a blocking ring 12, a first sliding chute 13, a first rack 14, a first spring 15, an extrusion rod 16, a yielding groove 17, a connecting groove 18, a rotating gear 19, a second sliding chute 20, a second rack 21, a cleaning brush 22, an extrusion port 23, a blocking plate 24, a first sliding groove 25, a sliding column 26, an extrusion plate 27, a second sliding groove 28, a second spring 29, a supporting plate 30, a water storage tank 31, a water inlet 32, a filter screen 33, a first flushing hole 34, a sliding plate 35, a third spring 36 and a second flushing hole 37.

Detailed Description

Referring to fig. 1-9, the present invention provides a technical solution: chain scraper blade sewer pipe dredging machine, including sewage pipes 1 and chain 2, the right end of sewage pipes 1 is a drain 3, the intermediate position of sewage pipes 1 communicates with the blowdown shell 4, the inner wall of both sides rotates jointly around the blowdown shell 4 and connects with the guide sprocket 5, the top of the blowdown shell 4 communicates with the discharging pipe 6, the chain 2 is located in sewage pipes 1, blowdown shell 4 and discharging pipe 6, the chain 2 meshes with the guide sprocket 5, the half surface of the total length of the chain 2 connects with the scraper blade 7 that the equidistance arranges fixedly, the surface of the guide sprocket 5 has protective mechanisms to protect the teeth of a cogwheel of the guide sprocket 5, the inner wall top of the blowdown shell 4 corresponds to the position of discharging pipe 6 and has blocking mechanisms to the mud;

the protection mechanism comprises an elastic protection ring 8, the protection ring 8 is positioned on the surface of the guide chain wheel 5, the gear teeth of the guide chain wheel 5 penetrate through the protection ring 8, the front end face and the rear end face of the protection ring 8 are attached to the inner wall of the sewage discharging shell 4, sliding rods 9 which are arranged at equal intervals are fixedly connected to the inner side of the protection ring 8 corresponding to the same side positions of the gear teeth of the guide chain wheel 5, guide grooves 10 are formed in the front inner wall and the rear inner wall of the sewage discharging shell 4, the guide grooves 10 are irregular rings, and the front end and the rear end of each sliding rod 9 slide in the corresponding guide groove 10;

the blocking mechanism comprises a blocking block 11, the blocking block 11 is fixedly connected to the top of the inner wall of the sewage discharging shell 4, the blocking block 11 is located at the bottom of the left side of the discharging pipe 6, the right side of the blocking block 11 is arc-shaped, the bottom of the blocking block 11 is in contact with the surface of the protection ring 8, the blocking rings 12 which are the same as the guide grooves 10 in shape are fixedly connected to the positions, corresponding to the outer sides of the guide grooves 10, of the front inner wall and the rear inner wall of the sewage discharging shell 4, and the blocking rings 12 are attached to the inner walls of the front end and the rear end of the protection ring 8;

when the invention cleans a sewage pipeline, an external driver can drive a chain 2 to move, a scraper 7 can move together under the drive of the chain 2, the scraper 7 can clean sludge in the sewage pipeline, the chain 2 can act on a guide chain wheel 5 to rotate while moving, the guide chain wheel 5 can drive a protective ring 8 to rotate together, the front end and the rear end of the protective ring 8 can move on the surface of a blocking ring 12, the blocking ring 12 can prevent gaps from appearing on the front side and the rear side of the protective ring 8, so that the sludge can flow into the gear teeth of the guide chain wheel 5, a sliding rod 9 can move in the guide groove 10 along with the protective ring 8, the protective ring 8 can move to different positions under the action of the sliding rod 9 and the guide groove 10 to contract towards the inner side or expand towards the outer side of the gear teeth of the guide chain wheel 5, on one hand, the protective ring 8 can be contracted to be beneficial to ensure that the protective ring 8 can avoid the scraper 7 and give space for the sludge, the phenomenon that when the protective ring 8 moves to the right side, the protective ring 8 is extruded and deformed by the scraper 7 and sludge to cause sludge to flow into the protective ring 8 is avoided, on the other hand, when the protective ring 8 opens outwards, the protective ring 8 can clean the sludge on the surface of the teeth of the guide chain wheel 5 to keep the teeth of the guide chain wheel 5 clean and facilitate subsequent cleaning, when the sludge is brought to the position of the guide chain wheel 5 by the scraper 7, the protective ring 8 is favorable for blocking the sludge to prevent the sludge from flowing between the teeth of the guide chain wheel 5, after the subsequent cleaning is finished, the dredger stops working, the sludge between the guide chain wheels 5 is gradually condensed to cause the guide chain wheel 5 not to normally rotate, even the guide chain wheel 5 is damaged to influence the subsequent cleaning dredging work, and the protective ring 8 protects the guide chain wheel 5 without cleaning the guide chain wheel 5, the workload of workers is reduced; when scraper blade 7 drove mud and remove the position that blocks piece 11, mud can be moving towards discharging pipe 6 along the arc on blocking piece 11 right side, blocks that piece 11 can block the gap on 8 upper ends right sides of guard ring, avoids when mud moves 8 upper ends right sides of guard ring, and mud can be attached to 8 surfaces of guard ring and move together, still can remain in the blowdown shell 4 and have mud can not discharged.

As a further scheme of the invention, the front side and the rear side of the top of the inner wall of the sewage discharging shell 4 are respectively provided with a first sliding chute 13, the right side of the first sliding chute 13 extends to the position of the discharging pipe 6, the first sliding chute 13 is connected with a first rack 14 in a sliding way, the left end of the first rack 14 is elastically connected with the inner wall of the first sliding chute 13 through a first spring 15, the right side part of the first rack 14 is not provided with teeth, the right end of the first rack 14 extends to the position of the discharging pipe 6, the end part of the first rack 14 is hinged with a telescopic extrusion rod 16, the bottom of the extrusion rod 16 is hinged with the right side of the blocking block 11, the blocking block 11 is provided with a yielding groove 17 corresponding to the position of the extrusion rod 16, one side of the top of the inner wall of the sewage discharging shell 4 corresponding to the middle of the two first sliding chutes 13 is provided with a connecting groove 18, and the connecting groove 18 is communicated with the first sliding chute 13, a rotating gear 19 is rotatably connected in each of the two connecting grooves 18, the rotating gear 19 is meshed with the first rack 14, a second sliding groove 20 is formed in one side, opposite to the two connecting grooves 18, of the top of the inner wall of the sewage discharging shell 4, the second sliding groove 20 is communicated with the connecting grooves 18, a second rack 21 is slidably connected in the second sliding groove 20, the second rack 21 is meshed with the rotating gear 19, the bottoms of the two second racks 21 are fixedly connected with a telescopic cleaning brush 22, and the bottom of the cleaning brush 22 is in contact with the surface of the protective ring 8; an extrusion opening 23 is formed in the middle of the extrusion block, a blocking plate 24 is hinged to the position, corresponding to the extrusion opening 23, of the top of the inner wall of the pollution discharge shell 4, the blocking plate 24 blocks the extrusion opening 23, the bottom of the blocking plate 24 is attached to the surface of the protection ring 8, a first sliding groove 25 is formed in the left side of the blocking plate 24, an L-shaped extrusion plate 27 is connected to the first sliding groove 25 in a sliding mode through a sliding column 26, the top of the extrusion plate 27 slides on the top of the inner wall of the pollution discharge shell 4, a second sliding groove 28 is formed in the position, corresponding to the end portion of the extrusion plate 27, of the top of the inner wall of the pollution discharge shell 4, and the right side of the extrusion plate 27 is elastically connected with the inner wall of the second sliding groove 28 through a second spring 29;

in the cleaning process, when the scraper 7 moves to the position of the extrusion rod 16 along with the chain 2, the scraper 7 acts on the extrusion rod 16, the extrusion rod 16 rotates to the right side and rotates into the abdicating groove 17, the first rack 14 moves to the left side under the pushing of the extrusion rod 16, the rotating gear 19 rotates under the action of the first rack 14, the second rack 21 moves to the right side under the action of the rotating gear 19, the cleaning brush 22 brushes and cleans sludge on the surface of the protection plate, so that the surface of the protection ring 8 is kept clean, sludge is prevented from remaining on the surface of the protection ring 8, after one cleaning is finished, the sludge can be condensed to cause the protection ring 8 to be hardened to influence the subsequent cleaning, the blocked block 11 is abraded by the condensed and hardened sludge to cause the gap between the blocked 11 and the protection ring 8 to be enlarged, and more sludge can be attached to the surface of the protection ring 8 in the subsequent cleaning process, when the cleaning brush 22 moves to the position of the extrusion plate 27, the cleaning brush 22 can act on the extrusion plate 27 to move towards the right side, the blocking plate 24 can be opened under the action of the extrusion plate 27, sludge can be pushed out to the position of the scraper 7 from the extrusion opening 23 by the cleaning brush 22, the scraper 7 can take away the pushed-out sludge, then the scraper 7 is separated from the extrusion rod 16, the first rack 14 can move towards the right side under the action of the first spring 15, the extrusion rod 16 can restore to the original position, the rotating gear 19 and the second rack 21 can restore to the original position under the action of the first rack 14, the cleaning brush 22 can move towards the left side, the extrusion plate 27 can restore to the original position under the action of the second spring 29, and the blocking plate 24 blocks the extrusion opening 23 again.

When the protective ring 8 is cleaned by the cleaning brush 22, the protective ring 8 may be sunken or folded, so that the cleaning brush 22 cannot completely clean the surface of the protective ring 8, as a further scheme of the invention, one side of the sliding rod 9, which is far away from the guide chain wheel 5, is fixedly connected with an elastic supporting plate 30, and the supporting plate 30 is attached to the inner side of the protective ring 8;

at the in-process that the guard ring 8 removed, backup pad 30 can support guard ring 8 from the inside of guard ring 8, when cleaning brush 22 cleared up guard ring 8 surface, backup pad 30 enables guard ring 8 and cleaning brush 22 and laminates completely, is favorable to making cleaning brush 22 with the complete clearance in surface of guard plate, avoids guard ring 8 can be sunken or the fold when the clearance, leads to cleaning brush 22 can not be with the complete clearance in guard ring 8 surface.

In the cleaning process, when the sludge in the sewage discharge pipeline 1 is excessive, the scraper 7 directly scrapes off all the sludge, so that the scraper 7 is blocked by a large amount of sludge, and as a further scheme of the invention, the size of the scraper 7 gradually changes from small to large to be suitable for the size of the sewage discharge pipeline 1;

when the clearance, chain 2 can drive scraper blade 7 and remove and clear up sewage pipes 1, and scraper blade 7 can be from little to big through sewage pipes 1, and mud can be taken away by scraper blade 7 of variation in size gradually, avoids scraper blade 7 can be blocked the card by a large amount of mud and dies.

When cleaning, a small amount of sludge residue inevitably exists on the surfaces of the cleaning brush 22 and the protective ring 8, as a further scheme of the invention, the top of the sewage discharging shell 4 and the left side of the discharging pipe 6 are fixedly connected with the water storage tank 31 together, the left side of the discharging pipe 6 is provided with the water inlet 32, the water inlet 32 is internally and fixedly connected with the filter screen 33, the top of the sewage discharging shell 4 is provided with the first flushing hole 34, the top of the sewage discharging shell 4 is connected with the sliding plate 35 in a sliding manner, the left side of the sliding plate 35 is elastically connected with the inner wall of the water storage tank 31 through the third spring 36, the surface of the sliding plate 35 is provided with the second flushing hole 37, the second flushing hole 37 is staggered with the first flushing hole 34, the right side of the sliding plate 35 penetrates through the discharging pipe 6 and extends into the discharging pipe 6, and the right end of the sliding plate 35 is provided with an inclined surface;

when cleaning, the chain 2 drives the scraping plates 7 with different sizes to clean the sewage discharge pipeline 1, when the scraping plates 7 with the same size as the sewage discharge pipeline 1 move to the position of the discharge pipe 6, the scraping plates 7 can act on the inclined plane on the right side of the sliding plate 35, the sliding plate 35 can move towards the left side under the action of the scraping plates 7, the second flushing hole 37 can coincide with the first flushing hole 34, water in the water storage tank 31 can flow out to flush the surfaces of the cleaning brush 22 and the protective ring 8, so that a small amount of sludge on the surfaces of the cleaning brush 22 and the protective ring 8 can be flushed, and sludge residue is avoided; when the blowdown water, there can be a large amount of sewage from the interior outflow of sewage pipes 1, have the sewage simultaneously and flow to the water inlet 32 position, sewage can flow into storage water tank 31 through filter screen 33 in, carry out the moisturizing to storage water tank 31, do not need the manual work to supply, reduce artificial work load to utilize sewage to carry out the moisturizing to storage water tank 31, be favorable to the water economy resource.