CN219333259U - A mechanism of decontaminating for sewage treatment pond - Google Patents

Abstract

The utility model discloses a sewage disposal mechanism for a sewage disposal tank, which comprises the sewage disposal tank, a first sewage disposal component and a second sewage disposal component, wherein the top of the sewage disposal tank is of an opening structure, two vertical plates are fixedly arranged at the top of the sewage disposal tank, the same transverse plate is fixedly arranged at the tops of the two vertical plates, shaft seats are fixedly arranged on one sides of the two vertical plates, which are close to each other, the two shaft seats are rotatably provided with a same screw rod which is transversely arranged, a movable seat is sleeved on the screw rod in a threaded manner, the first sewage disposal component is connected to the bottom of the movable seat, and the second sewage disposal component is arranged between the two vertical plates. The utility model has reasonable design, can completely and effectively clean the interior of the sewage treatment tank, has good cleaning effect, can reduce the labor capacity of workers, reduces the physical consumption of the workers, can completely and thoroughly discharge sewage out of the sewage treatment tank, has smooth sewage discharge and can not block a sewage discharge pipe.

Description

A mechanism of decontaminating for sewage treatment pond

Technical Field

The utility model relates to the technical field of sewage disposal equipment, in particular to a sewage disposal mechanism for a sewage disposal tank.

Background

Sewage treatment is a process of purifying sewage to meet the water quality requirement of being discharged into a certain water body or reused. The sewage treatment is widely applied to various fields of buildings, agriculture, traffic, energy sources, petrifaction, environmental protection, urban landscapes, medical treatment, catering and the like, and the sewage treatment is increasingly carried into the daily life of common people. In the sewage treatment process, because sewage needs to be subjected to sedimentation treatment in the sewage treatment tank, a large amount of sewage can be deposited in the sewage treatment tank, the sewage can be adhered to the inner wall of the sewage treatment tank, and the sewage treatment tank needs to be cleaned regularly by a sewage cleaning mechanism for better use.

In the prior art, chinese patent with the authority of publication number CN211161054U discloses a sewage disposal mechanism for a sewage disposal tank, which is technically characterized in that: including sewage treatment pond and inner chamber, sewage treatment pond's inside is equipped with the inner chamber, and the apron that is used for sealed inner chamber is installed at sewage treatment pond's top, the bottom of inner chamber is equipped with bottom clearance subassembly, and the bilateral symmetry of inner chamber is equipped with the lateral wall clearance subassembly that is used for the clearance of sewage treatment pond lateral wall.

The above-mentioned scheme is although can realize the function of clear up the inner wall of sewage treatment pond, but discovers in the in-service use, because the inner wall in sewage treatment pond divide into four side inner walls and a bottom inner wall, in the trash removal process, can not clean four side inner walls totally for the filth that the adhesion on four side inner walls can not all effectually scrape, leads to not comprehensive thoroughly to the trash removal of sewage treatment pond inside, and the process of manual operation trash removal is loaded down with trivial details hard, for this reason, we propose a trash removal mechanism for sewage treatment pond and be used for solving above-mentioned problem.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides a sewage disposal mechanism for a sewage disposal tank, which solves the problems that the traditional sewage disposal mechanism for the sewage disposal tank can not clean all the four side inner walls when in use, so that dirt adhered to the four side inner walls can not be scraped off completely and effectively, the sewage disposal inside the sewage disposal tank is not complete and thorough, and the manual operation of the sewage disposal process is tedious and laborious.

(II) technical scheme

In order to achieve the above purpose, the present utility model provides the following technical solutions: a mechanism of decontaminating for sewage treatment pond, including sewage treatment pond, first subassembly and the second subassembly of decontaminating, the top in sewage treatment pond is the opening structure, and the top fixed mounting in sewage treatment pond has two risers, and the top fixed mounting of two risers has same diaphragm, and one side that two risers are close to each other is all fixed mounting has the axle bed, rotates on two axle beds and installs the lead screw of same horizontal setting, and the thread bush is equipped with the movable seat on the lead screw, and first subassembly of decontaminating is connected in the bottom of movable seat, and the second subassembly of decontaminating sets up between two risers, is provided with the drive assembly who is used for driving the lead screw pivoted on the diaphragm.

Preferably, the first dirt-cleaning component comprises a fixed plate, a connecting seat and two U-shaped scrapers, the top of the fixed plate is fixedly connected with the bottom of the movable seat, the bottom of the fixed plate extends into the sewage treatment tank, the connecting seat is fixedly arranged at the bottom of the fixed plate, the two U-shaped scrapers are respectively fixedly connected with the two sides of the connecting seat, the bottoms of the two U-shaped scrapers are in sliding contact with the bottom inner wall of the sewage treatment tank, the front side outer walls of the two U-shaped scrapers are in sliding contact with the front side inner wall of the sewage treatment tank, and the rear side outer walls of the two U-shaped scrapers are in sliding contact with the rear side inner wall of the sewage treatment tank.

Preferably, the drive assembly includes first motor, the drive shaft, initiative bevel gear and driven bevel gear, first motor sets up the top at the diaphragm, the top of drive shaft and the output axle head fixed connection of first motor, the diaphragm is run through to the bottom of drive shaft, initiative bevel gear fixed mounting is in the bottom of drive shaft, driven bevel gear fixed cover is established on the lead screw, initiative bevel gear meshes with driven bevel gear mutually, the spacing groove has been seted up to the bottom of diaphragm, the top fixed mounting of movable seat has the gag lever post, gag lever post slidable mounting is in the spacing groove.

Preferably, both sides of the first motor are fixedly provided with L-shaped brackets, and the bottoms of the two L-shaped brackets are fixedly connected with the top of the transverse plate.

Preferably, the second dirt cleaning assembly comprises two mounting plates, two electric hydraulic cylinders and two side scraping plates, wherein the two mounting plates are respectively and fixedly installed on one sides of the two vertical plates, which are close to each other, the two mounting plates are located below the screw rods, the two electric hydraulic cylinders are respectively and fixedly installed at the bottoms of the two corresponding mounting plates, the output shaft ends of the two electric hydraulic cylinders are respectively and fixedly installed on the output shaft ends of the corresponding electric hydraulic cylinders, and one sides of the two side scraping plates, which are far away from each other, are respectively and slidably contacted with the left side inner wall and the right side inner wall of the sewage treatment tank.

Preferably, two U-shaped sewage collecting grooves are formed in the inner wall of the bottom of the sewage treatment tank, two sewage pipes are fixedly mounted on the front side wall of the sewage treatment tank and are respectively communicated with the corresponding U-shaped sewage collecting grooves, sewage end covers are mounted at the front ends of the two sewage pipes in a threaded mode, and a sewage assembly is connected to the sewage treatment tank.

Preferably, the blowdown subassembly includes two heliciform material conveying axles, two sprockets, chain and second motor, and two heliciform material conveying axles rotate respectively and install in corresponding U type dirt collecting tank, and the rear end of two heliciform material conveying axles all extends to outside the sewage treatment pond, and two sprockets are fixed the cover respectively and are established at the rear end of corresponding heliciform material conveying axle, and the chain winds and establishes on two sprockets, and the second motor setting is at the rear side in sewage treatment pond, and the rear end of one heliciform material conveying axle in two heliciform material conveying axles and the output axle head fixed connection of second motor.

Preferably, a machine base is fixedly arranged on the outer wall of the rear side of the sewage treatment tank, and the second motor is fixedly arranged on the machine base.

(III) beneficial effects

The utility model provides a sewage disposal mechanism for a sewage treatment tank. The beneficial effects are as follows:

(1) This a mechanism of decontaminating for sewage treatment pond, through utilizing the first subassembly of decontaminating that fixed plate, connecting seat and two U type scraper blade combinations constitute, utilize the second subassembly of decontaminating that two mounting panels, two electronic pneumatic cylinders and two side scraper blade combinations constitute, and utilize the drive assembly that first motor, the drive shaft, initiative bevel gear and driven bevel gear combination constitute, under its co-operation's effect, can strike off the filth in the sewage treatment pond comprehensively and push to deposit in two U type catch bowl and collect, and then can realize carrying out comprehensive effective and thorough decontaminating to sewage treatment pond inside, the effect of decontaminating has been improved, and the work load of reducible staff, the physical power consumption of staff has been reduced, the present mechanism of decontaminating for sewage treatment pond is when using, the problem of the inside clean of sewage treatment pond is not comprehensive thoroughly enough, and the loaded down with trivial details and laborious manual operation of the process of decontaminating has been solved.

(2) This a mechanism of decontaminating for sewage treatment pond, through utilizing the blowdown subassembly that two heliciform material conveying axles, two sprockets, chain and second motor combination constitute, can discharge the filth in two U type dirt collecting tanks through corresponding blow off pipe, can thoroughly discharge the filth outside the sewage treatment pond comprehensively, the blowdown is smooth and easy, can not block up the blow off pipe, and the blowdown is effectual.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic cross-sectional view of the front view of the present utility model;

FIG. 3 is an enlarged schematic view of portion A of FIG. 2;

FIG. 4 is a schematic rear view of the present utility model;

fig. 5 is a schematic perspective view of a U-shaped squeegee.

In the figure: 1. a sewage treatment tank; 2. a riser; 3. a cross plate; 4. a shaft seat; 5. a screw rod; 6. a movable seat; 7. a fixing plate; 8. a connecting seat; 9. a U-shaped scraping plate; 10. a first motor; 11. an L-shaped bracket; 12. a drive shaft; 13. a driving bevel gear; 14. a driven bevel gear; 15. a mounting plate; 16. an electro-hydraulic cylinder; 17. a side scraper; 18. u-shaped sewage collecting grooves; 19. a blow-down pipe; 20. a sewage discharge end cover; 21. a spiral material conveying shaft; 22. a sprocket; 23. a chain; 24. and a second motor.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model, and furthermore, in the description of the present utility model, the meaning of "a plurality" means two or more unless specifically defined otherwise.

As shown in fig. 1-5, the present utility model provides a technical solution: a mechanism of decontaminating for sewage treatment tank, includes sewage treatment tank 1, first subassembly and the subassembly of decontaminating of second, wherein:

the top of sewage treatment pond 1 is open structure, the top fixed mounting of sewage treatment pond 1 has two risers 2, the top fixed mounting of two risers 2 has same diaphragm 3, through two risers 2 of top installation of sewage treatment pond 1 and diaphragm 3, make things convenient for the installation and the use of first clear subassembly and the clear subassembly of second, the equal fixed mounting in one side that two risers 2 are close to each other has axle bed 4, rotate the lead screw 5 of installing same horizontal setting on two axle beds 4, the threaded sleeve is equipped with movable seat 6 on the lead screw 5, utilize movable seat 6 and the threaded connection cooperation of lead screw 5, make lead screw 5 at pivoted in-process, movable seat 6 can horizontal migration on lead screw 5, it is to be noted that the spacing groove has been seted up to the bottom of diaphragm 3, the top fixed mounting of movable seat 6 has the gag lever post, gag lever post slidable mounting is in the spacing inslot, utilize the sliding connection cooperation of gag lever post in the spacing inslot, can lead the direction of movement of movable seat 6, make movable seat 6 can carry out steady horizontal migration.

The first cleaning component is connected to the bottom of the movable seat 6, and can scrape dirt adhered to the inner wall of the bottom, the inner wall of the front side and the inner wall of the rear side of the sewage treatment tank 1 by using the first cleaning component, so as to realize the effect of cleaning the sewage, the first cleaning component comprises a fixed plate 7, a connecting seat 8 and two U-shaped scraping plates 9, the top of the fixed plate 7 is fixedly connected with the bottom of the movable seat 6, the bottom of the fixed plate 7 extends into the sewage treatment tank 1, the connecting seat 8 is fixedly arranged at the bottom of the fixed plate 7, the two U-shaped scraping plates 9 are respectively fixedly connected with the two sides of the connecting seat 8, the bottoms of the two U-shaped scraping plates 9 are in sliding contact with the inner walls of the bottom of the sewage treatment tank 1, the outer walls of the front sides of the two U-shaped scraping plates 9 are in sliding contact with the inner walls of the front side of the sewage treatment tank 1, the rear side outer wall of two U type scrapers 9 all with the rear side inner wall sliding contact of sewage treatment pond 1, utilize the bottom of U type scraper 9, can scrape the filth of adhesion at sewage treatment pond 1 bottom inner wall, utilize the both sides of U type scraper 9, can scrape the filth on the front side inner wall and the rear side inner wall of sewage treatment pond 1, it is to be noted that, the shape size of two U type scrapers 9 is the same setting, the width size of connecting seat 8 is the same with the width size of U type scraper 9, and the bottom of connecting seat 8 and the bottom inner wall sliding contact of sewage treatment pond 1, and then the filth can not gather between two U type scrapers 9, connecting seat 8 can set up to hollow structure, and then can reduce the weight of connecting seat 8.

The driving assembly is arranged on the transverse plate 3 and can be used for driving the screw rod 5 to rotate, the driving assembly can conveniently control the first cleaning assembly to horizontally move, so that the inner wall of a sewage treatment tank can be automatically cleaned, the driving assembly comprises a first motor 10, a driving shaft 12, a driving bevel gear 13 and a driven bevel gear 14, the first motor 10 is arranged at the top of the transverse plate 3, the top end of the driving shaft 12 is fixedly connected with the output shaft end of the first motor 10, the bottom end of the driving shaft 12 penetrates through the transverse plate 3, a round hole is formed in the top of the transverse plate 3, the bottom end of the driving shaft 12 penetrates through the round hole formed in the transverse plate 3, the driving shaft 12 is rotatably arranged in the round hole through a bearing, the driving shaft 12 can smoothly rotate, the driving bevel gear 13 is fixedly arranged at the bottom end of the driving shaft 12, the driven bevel gear 14 is fixedly sleeved on the screw rod 5, the driving bevel gear 13 is meshed with the driven bevel gear 14, the driving shaft 12 and the driving bevel gear 13 can be controlled to rotate, the driving bevel gear 14 is meshed with the driving bevel gear 14, the screw rod 5 can be controlled to rotate, the motor is required to be controlled, and the first motor 10 can be controlled to rotate positively or reversely, and conveniently rotate the driving bevel gear 13 is controlled.

The second dirt cleaning component is arranged between the two vertical plates 2, dirt adhered to the left inner wall and the right inner wall of the sewage treatment tank 1 can be scraped by the second dirt cleaning component, dirt cleaning effect is achieved, the second dirt cleaning component comprises two mounting plates 15, two electric hydraulic cylinders 16 and two side scrapers 17, the two mounting plates 15 are respectively and fixedly arranged on one sides of the two vertical plates 2, which are close to each other, the two mounting plates 15 are respectively and fixedly arranged at the bottoms of the two corresponding mounting plates 15, the output shaft ends of the two electric hydraulic cylinders 16 are respectively and fixedly arranged in the sewage treatment tank 1, the two side scrapers 17 are respectively and fixedly arranged at the output shaft ends of the corresponding electric hydraulic cylinders 16, one sides of the two side scrapers 17 are respectively in sliding contact with the left inner wall and the right inner wall of the sewage treatment tank 1, the corresponding side scrapers 17 can be controlled to be lifted or lowered by the two electric hydraulic cylinders 16, the two side scrapers 17 can be arranged to the dirt adhered to the left inner wall and the right inner wall of the sewage treatment tank 1 in the same size, and the two side scrapers 17 are required to be arranged in the horizontal size.

The sewage treatment tank 1 is characterized in that two U-shaped sewage collecting grooves 18 are formed in the inner wall of the bottom of the sewage treatment tank 1, cleaned sewage can be stored and collected by the aid of the U-shaped sewage collecting grooves 18, two sewage pipes 19 are fixedly mounted on the front side wall of the sewage treatment tank 1 and are respectively communicated with the corresponding U-shaped sewage collecting grooves 18, the two sewage pipes 19 are used for discharging the sewage in the corresponding U-shaped sewage collecting grooves 18, a sewage end cover 20 is mounted at the front ends of the two sewage pipes 19 in a threaded mode, the sewage end cover 20 is used for plugging the pipe orifices of the sewage pipes 19, and a sewage assembly is connected to the sewage treatment tank 1.

Through the structure, when the sewage disposal mechanism for the sewage disposal tank provided by the utility model is used, by starting the two electric hydraulic cylinders 16 to work, the two electric hydraulic cylinders 16 drive the corresponding side scraping plates 17 to vertically move downwards, the sewage adhered on the left inner wall and the right inner wall of the sewage disposal tank 1 can be scraped by the vertical downward movement of the two side scraping plates 17, the scraped sewage is remained on the bottom inner wall of the sewage disposal tank 1, after the sewage disposal on the left inner wall and the right inner wall of the sewage disposal tank 1 is completed, the two electric hydraulic cylinders 16 are started to reset, the two side scraping plates 17 can be controlled to vertically move upwards to return to the original position, the first motor 10 drives the driving shaft 12 and the driving bevel gear 13 to rotate forwards by starting the first motor 10, the screw rod 5 can be controlled to rotate by utilizing the meshing transmission of the driving bevel gear 13 and the driven bevel gear 14, so that the movable seat 6 drives the fixed plate 7, the connecting seat 8 and the two U-shaped scraping plates 9 to horizontally move rightwards, the first motor 10 is started to reversely rotate, the first motor 10 drives the driving shaft 12 and the driving bevel gear 13 to reversely rotate, the movable seat 6 can be controlled to horizontally move leftwards by utilizing the meshing transmission of the driving bevel gear 13 and the driven bevel gear 14, the fixed plate 7, the connecting seat 8 and the two U-shaped scraping plates 9 are further controlled to horizontally move rightwards, the U-shaped scraping plates 9 are further controlled to horizontally move rightwards and horizontally move leftwards, dirt on the bottom inner wall, the front inner wall and the rear inner wall of the sewage treatment tank 1 can be scraped by the U-shaped scraping plates 9, the scraped dirt can be pushed into the two U-shaped dirt collecting grooves 18 at the bottom of the sewage treatment tank 1 to be collected and stored, the effect of comprehensively, effectively and thoroughly cleaning the inside of the sewage treatment tank 1 can be realized, the labor of workers can be reduced, the physical consumption of staff is reduced.

In this embodiment, the two sides of the first motor 10 are fixedly provided with the L-shaped brackets 11, the bottoms of the two L-shaped brackets 11 are fixedly connected with the top of the transverse plate 3, and the installation position of the first motor 10 can be supported and reinforced by using the two L-shaped brackets 11, so that the first motor 10 can stably run.

In this embodiment, the sewage collected in the two U-shaped sewage collecting tanks 18 can be conveniently discharged to the outside of the sewage treatment tank 1 by using a sewage discharging assembly, the sewage discharging assembly comprises two spiral material conveying shafts 21, two chain wheels 22, a chain 23 and a second motor 24, the two spiral material conveying shafts 21 are respectively and rotatably installed in the corresponding U-shaped sewage collecting tanks 18, the rear ends of the two spiral material conveying shafts 21 extend to the outside of the sewage treatment tank 1, the two chain wheels 22 are respectively and fixedly sleeved at the rear ends of the corresponding spiral material conveying shafts 21, the chain 23 is wound on the two chain wheels 22, the second motor 24 is arranged at the rear side of the sewage treatment tank 1, the rear end of one spiral material conveying shaft 21 in the two spiral material conveying shafts 21 is fixedly connected with the output shaft end of the second motor 24, by utilizing the transmission effect of the two chain wheels 22 and the chain 23, the two spiral material conveying shafts 21 can be controlled to synchronously rotate in the same direction, and then the dirt in the corresponding U-shaped dirt collecting groove 18 can be continuously discharged from the corresponding blow-off pipe 19 by utilizing the rotation of the two spiral material conveying shafts 21, and the protection cover can be arranged on the outer wall of the rear side of the sewage treatment tank 1, and the two chain wheels 22, the chain 23 and the second motor 24 are covered in the protection cover, so that the two chain wheels 22, the chain 23 and the second motor 24 can be isolated and protected by utilizing the protection cover, and the protection cover can be fixed by bolts, so that the disassembly is convenient, and the two chain wheels 22, the chain 23 and the second motor 24 can be overhauled and maintained conveniently.

Through the structure, when the sewage disposal mechanism for the sewage disposal tank is used, after the sewage disposal inside the sewage disposal tank 1 is completed, the two sewage disposal end covers 20 are respectively screwed off the corresponding sewage disposal pipes 19, then the second motor 24 is started to work, the two spiral material conveying shafts 21 can be controlled to synchronously rotate in the same direction by utilizing the transmission action of the two chain wheels 22 and the chain 23, and then the sewage in the corresponding U-shaped sewage disposal tank 18 can be continuously conveyed towards the direction of the corresponding sewage disposal pipes 19 by utilizing the rotation of the two spiral material conveying shafts 21, so that the sewage in the two U-shaped sewage disposal tanks 18 can be discharged from the corresponding sewage disposal pipes 19, and the sewage can be completely discharged outside the sewage disposal tank 1, so that the sewage disposal is smooth and the sewage disposal pipe 19 cannot be blocked.

In this embodiment, the outer wall of the rear side of the sewage treatment tank 1 is fixedly provided with a stand, the second motor 24 is fixedly installed on the stand, and the stand is used for supporting the second motor 24, so that the second motor 24 is convenient to install and stably use.

It should be noted that, a control switch is installed on one riser 2 of the two risers 2, the first motor 10, the two electric hydraulic cylinders 16, the second motor 24 and the control switch are electrically connected with an external power line through wires to form a loop, the control switch can control the start-stop and the forward-reverse rotation of the first motor 10, can also control the start-stop and the reset of the two electric hydraulic cylinders 16, and can also control the start-stop of the second motor 24.

The above description is merely an embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present utility model, and it is intended to cover the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims, and all matters not described in detail in the present specification belong to the prior art known to those skilled in the art.

Claims (8)

1. A mechanism of decontaminating for sewage treatment pond, its characterized in that: including sewage treatment pond (1), first subassembly and the second subassembly of decontaminating, the top in sewage treatment pond (1) is the opening structure, the top fixed mounting in sewage treatment pond (1) has two risers (2), two the top fixed mounting of riser (2) has same diaphragm (3), two the equal fixed mounting in one side that riser (2) are close to each other has axle bed (4), two rotate on axle bed (4) and install screw (5) of same horizontal setting, the cover of screw thread is equipped with movable seat (6) on screw (5), first subassembly of decontaminating is connected the bottom of movable seat (6), the second subassembly of decontaminating sets up two between riser (2), be provided with on diaphragm (3) and be used for driving screw (5) pivoted drive assembly.

2. A cleaning mechanism for a wastewater treatment tank as set forth in claim 1, wherein: the first dirt cleaning assembly comprises a fixing plate (7), a connecting seat (8) and two U-shaped scraping plates (9), wherein the top of the fixing plate (7) is fixedly connected with the bottom of the movable seat (6), the bottom of the fixing plate (7) extends to the inside of the sewage treatment tank (1), the connecting seat (8) is fixedly installed at the bottom of the fixing plate (7), the two U-shaped scraping plates (9) are fixedly connected with the two sides of the connecting seat (8) respectively, the bottoms of the two U-shaped scraping plates (9) are in sliding contact with the inner wall of the bottom of the sewage treatment tank (1), the outer walls of the front sides of the two U-shaped scraping plates (9) are in sliding contact with the inner wall of the front side of the sewage treatment tank (1), and the outer walls of the rear sides of the two U-shaped scraping plates (9) are in sliding contact with the inner wall of the rear side of the sewage treatment tank (1).

3. A cleaning mechanism for a wastewater treatment tank as set forth in claim 1, wherein: the driving assembly comprises a first motor (10), a driving shaft (12), a driving bevel gear (13) and a driven bevel gear (14), wherein the first motor (10) is arranged at the top of the transverse plate (3), the top end of the driving shaft (12) is fixedly connected with the output shaft end of the first motor (10), the bottom end of the driving shaft (12) penetrates through the transverse plate (3), the driving bevel gear (13) is fixedly arranged at the bottom end of the driving shaft (12), the driven bevel gear (14) is fixedly sleeved on the screw rod (5), the driving bevel gear (13) is meshed with the driven bevel gear (14), a limiting groove is formed in the bottom of the transverse plate (3), and a limiting rod is fixedly arranged at the top of the movable seat (6) and slidably arranged in the limiting groove.

4. A cleaning mechanism for a wastewater treatment tank as claimed in claim 3, wherein: the two sides of the first motor (10) are fixedly provided with L-shaped brackets (11), and the bottoms of the two L-shaped brackets (11) are fixedly connected with the top of the transverse plate (3).

5. A cleaning mechanism for a wastewater treatment tank as set forth in claim 1, wherein: the second dirt cleaning assembly comprises two mounting plates (15), two electric hydraulic cylinders (16) and two side scraping plates (17), wherein the two mounting plates (15) are respectively and fixedly installed on one sides of the two vertical plates (2) which are close to each other, the two mounting plates (15) are located below the screw rod (5), the two electric hydraulic cylinders (16) are respectively and fixedly installed at the bottoms of the two corresponding mounting plates (15), the output shaft ends of the two electric hydraulic cylinders (16) are respectively and fixedly installed on the output shaft ends of the corresponding electric hydraulic cylinders (16), and one sides of the two side scraping plates (17) which are far away from each other are respectively in sliding contact with the left inner wall and the right inner wall of the sewage treatment tank (1).

6. A cleaning mechanism for a wastewater treatment tank as set forth in claim 1, wherein: two U-shaped sewage collecting grooves (18) are formed in the inner wall of the bottom of the sewage treatment tank (1), two sewage pipes (19) are fixedly installed on the front side wall of the sewage treatment tank (1), the two sewage pipes (19) are respectively communicated with the corresponding U-shaped sewage collecting grooves (18), a sewage end cover (20) is installed at the front ends of the two sewage pipes (19) in a threaded mode, and a sewage assembly is connected to the sewage treatment tank (1).

7. A cleaning mechanism for a wastewater treatment tank as set forth in claim 6, wherein: the sewage disposal assembly comprises two spiral conveying shafts (21), two chain wheels (22), a chain (23) and a second motor (24), wherein the two spiral conveying shafts (21) are respectively and rotatably installed in the corresponding U-shaped sewage collecting grooves (18), the rear ends of the two spiral conveying shafts (21) are respectively and fixedly sleeved outside the sewage treatment tank (1), the two chain wheels (22) are respectively and fixedly sleeved at the rear ends of the corresponding spiral conveying shafts (21), the chain (23) is wound on the two chain wheels (22), the second motor (24) is arranged at the rear side of the sewage treatment tank (1), and the rear end of one spiral conveying shaft (21) in the two spiral conveying shafts (21) is fixedly connected with the output shaft end of the second motor (24).

8. A cleaning mechanism for a wastewater treatment tank as set forth in claim 7, wherein: the machine seat is fixedly arranged on the outer wall of the rear side of the sewage treatment tank (1), and the second motor (24) is fixedly arranged on the machine seat.

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