CN221440460U

CN221440460U - Cleaning wastewater treatment system

Info

Publication number: CN221440460U
Application number: CN202323374773.XU
Authority: CN
Inventors: 张星; 杜子敦; 樊菁
Original assignee: Tianjin Quancheng Huanjin Environmental Protection Technology Co ltd
Current assignee: Tianjin Quancheng Huanjin Environmental Protection Technology Co ltd
Priority date: 2023-12-11
Filing date: 2023-12-11
Publication date: 2024-07-30
Anticipated expiration: 2033-12-11

Abstract

The utility model relates to a cleaning wastewater treatment system. Comprises a treatment box body, wherein a first conical mud bucket and a second conical mud bucket are arranged at the lower part of the treatment box body; the inner cavity of the treatment box body is fixedly connected with a first front partition board and a second front partition board, the inner cavity of the treatment box body is divided into a clarification area, a total sedimentation area and a flocculation area, and a flocculation adjusting structure is arranged in the flocculation area; the sedimentation zone is provided with a second rear baffle plate and a first front baffle plate, and the total sedimentation zone is divided into a front sedimentation zone, a middle sedimentation zone and a rear sedimentation zone; a plurality of groups of sedimentation sloping plates are arranged in the middle sedimentation zone; a second scraping rotating shaft provided with a second scraping knife is arranged in the second conical mud bucket; a first scraping rotating shaft provided with a first scraping knife is arranged in the first conical mud bucket; the device also comprises two groups of rotary driving devices; the sludge discharge pipeline structure and the auger sewage discharge assembly are also included. The utility model can carry out dosing precipitation treatment on the cleaning wastewater, thereby realizing the recycling of the wastewater, and simultaneously discharging the precipitated sludge in time so as to avoid the problem of scale formation caused by sludge accumulation.

Description

Cleaning wastewater treatment system

Technical Field

The utility model belongs to the technical field of sewage treatment, and particularly relates to a cleaning wastewater treatment system.

Background

The air preheater is an air preheater, is widely applied to the power generation industry, and is a regenerative heat exchanger operated in a countercurrent mode. When the smoke flows through the rotor, the smoke releases heat to the heat storage element, and the temperature of the smoke is reduced; when the heat storage element rotates to the air side, heat is released to the air again, and the air temperature rises. The circulating cycle is repeated to realize the heat exchange between the flue gas and the air.

With the increase of the running time of the equipment, ash and dirt can be formed in the air preheater, and because gaps among the heat accumulating sheets of the air preheater are smaller, the ash and dirt can be firmly adhered to the heating surfaces of the heat accumulating sheets after being condensed together, and the accumulated ash and dirt can be accumulated more and thicker along with the time and even be blocked, so that the safe and economic operation of the generator set can be influenced when the blocking problem is serious. Therefore, the air preheater equipment needs to be cleaned regularly to remove the ash and dirt layer in the air preheater. The cleaning of the air preheater in engineering uses high-pressure water flushing as a main cleaning means, and if the most conventional high-pressure water flushing method is adopted, the effect is very little, so that the cleaning of the air preheater is generally carried out by adopting a cleaning agent infiltration method and a high-pressure water flushing method. After being soaked by the cleaning agent, dirt on the heat accumulating sheet of the air preheater can be loosened, and then the dirt is easy to crack and peel off when the air preheater is washed under high pressure. In general, when the air preheater is cleaned by the method, a large amount of water sources are required to be continuously washed, so that a large amount of washing wastewater is generated.

The waste water from air preheater cleaning mainly contains sulfuric acid, sulfurous acid and other acidic matters, its pH value is between 3-7, and is acidic, and the suspension mainly contains ash and a large amount of heavy metals and other matters in the air preheater, and said waste water also has the characteristics of short discharge time, large discharge quantity and high pollutant concentration in waste liquor, and the current industrial waste water treatment station of power plant can not meet the requirements for reuse after treatment, so that it is highly necessary to design a sewage-collecting sedimentation tank for air preheater cleaning for waste water treatment and reuse so as to solve the above-mentioned problems.

Disclosure of utility model

The utility model provides a washing wastewater treatment system with reasonable structural design for solving the technical problems in the prior art. The utility model can carry out dosing precipitation treatment on the cleaning wastewater, thereby realizing the recycling of the wastewater, and simultaneously discharging the precipitated sludge in time so as to avoid the problem of scale formation caused by sludge accumulation.

The utility model adopts the technical proposal for solving the technical problems in the prior art that: the cleaning wastewater treatment system comprises a treatment box body, wherein a first conical mud bucket and a second conical mud bucket are arranged at an opening at the lower part of the treatment box body; the inner cavity of the treatment box body is fixedly connected with a first rear baffle plate and a second front baffle plate which are distributed along the length direction of the treatment box body, the inner cavity of the treatment box body is divided into a clarification area, a total sedimentation area and a flocculation area, and a flocculation adjusting structure is arranged in the flocculation area; the total sedimentation area is communicated with the clarification area at the upper part, and the flocculation area is communicated with the total sedimentation area at the lower part; the sedimentation zone is provided with a second rear baffle and a first front baffle which are distributed along the length direction of the sedimentation zone, and the total sedimentation zone is divided into a front sedimentation zone, a middle sedimentation zone and a rear sedimentation zone which are communicated with each other; a plurality of groups of sedimentation inclined plates distributed in an array are arranged in the middle sedimentation area; a second scraping rotating shaft is longitudinally arranged in the second conical mud bucket, and a second dirt scraping knife is arranged on the second scraping rotating shaft and used for scraping the inner wall of the second conical mud bucket; a first scraping rotating shaft is longitudinally arranged in the first conical mud bucket, and a first dirt scraping knife is arranged on the first scraping rotating shaft and used for scraping the inner wall of the first conical mud bucket; the two groups of rotary driving devices are respectively used for driving the first scraping rotating shaft and the second scraping rotating shaft to rotate; the system also comprises a sludge discharge pipeline structure for discharging sludge sediment in the front sedimentation zone and the clarification zone; the sludge discharge device also comprises an auger sewage discharge assembly which is used for discharging sludge sediment in the first conical sludge hopper and the second conical sludge hopper.

The utility model has the advantages and positive effects that: the utility model provides a cleaning wastewater treatment system, which can be used for adding flocculating agents, PH regulators and other medicaments into a first buffer cavity and a second buffer cavity through a flocculation regulation structure so as to regulate the PH value of cleaning wastewater, and enabling suspended matters dispersed in a liquid phase to be condensed to form particles through physical and chemical actions, so that the preliminary sedimentation operation of sewage is realized; the mixed liquid after flocculation sedimentation operation enters a front sedimentation zone from the lower part, the mixed liquid enters a front sedimentation zone in a mode of entering from the lower part and exiting from the upper part, the mixed liquid enters a middle sedimentation zone from the upper part of the front sedimentation zone, suspended matters and supernatant liquid of the mixed liquid are separated and separated through a plurality of groups of sedimentation inclined plates arranged in the middle sedimentation zone, and sludge is discharged into a first conical sludge hopper and a second conical sludge hopper from the bottom; the corresponding scraping knife, the scraping rotating shaft and the rotary driving device are arranged to scrape and clean impurities such as sludge adhered to the inner surface of the corresponding conical mud bucket, so that the phenomenon that the sludge deposits on the inner wall of the conical mud bucket to form scale is inconvenient to clean is avoided; the sludge sediment in the first cone mud bucket and the second cone mud bucket is discharged through the arranged auger sewage discharging assembly; through setting up the mud pipeline structure for the sediment of mud in sedimentation zone and the clarification district before the discharge finally realizes the sediment treatment to washing wastewater, and then recycle, waste water treatment is effectual.

Preferably: still include and receive the slag bath in the preceding sedimentation zone of upper portion installation at the second preceding baffle, still include can face/deviate from and receive the slag bath removal dial the slag plate for stir the impurity that is in total sedimentation zone upper portion and receive in the slag bath, still include and be used for driving dial the slag driving device that the slag plate removed.

Preferably: the slag stirring driving device comprises two groups of driving gear pairs which are oppositely arranged, a connecting rotating shaft which is used for connecting the two groups of driving gear pairs into a whole is arranged between the two groups of driving gear pairs, and a slag stirring plate is connected with the two groups of driving gear pairs; the device also comprises a driving motor for driving the connecting rotating shaft to rotate.

Preferably: the auger sewage disposal assembly comprises a second sewage disposal pipe arranged at the lower opening of the second conical mud bucket, and a second sewage disposal auger connected with a second scraping rotating shaft is arranged in the second sewage disposal pipe in a penetrating way; the first drain pipe is arranged at the opening of the lower part of the first conical mud bucket, and a first drain auger connected with the first scraping rotating shaft is arranged in the first drain pipe in a penetrating manner; the sewage treatment device also comprises a transmission outer pipe which is respectively communicated with the second sewage treatment pipe and the first sewage treatment pipe, the end part of the transmission outer pipe is provided with a total sewage treatment outlet, and a transmission auger is arranged in the transmission outer pipe in a penetrating way; the device also comprises a transmission motor for driving the transmission auger to rotate.

Preferably: the sludge discharge pipeline structure comprises a first sludge discharge pipeline arranged at the bottom of the front sedimentation zone, and a valve is arranged on the first sludge discharge pipeline; the system also comprises a second sludge discharge pipeline arranged at the bottom of the clarification area, and a valve is arranged on the second sludge discharge pipeline; the sludge pump is connected with the first sludge discharge pipeline and the second sludge discharge pipeline.

Preferably: the flocculation adjusting structure comprises a first dosing baffle and a second dosing baffle which are fixedly connected with the flocculation area and are vertically arranged, the flocculation area is divided into a first dosing cavity, a second dosing cavity and a third dosing cavity, and a water inlet is formed in the upper part of the first dosing cavity; the first dosing cavity is communicated with the second dosing cavity at the lower part, and the second dosing cavity is communicated with the third dosing cavity at the upper part; the first stirring unit is arranged in the first dosing cavity and the second dosing cavity, and the second stirring unit is arranged in the third dosing cavity.

Preferably: the rotary driving device comprises a gear box body, a rotary mounting piece is hermetically arranged at a port of the gear box body, a second gear shaft which is in rotary connection with the gear box body is longitudinally penetrated in the gear box body, a first gear shaft which is transversely penetrated in the gear box body and is in rotary connection with the rotary mounting piece is also included, a bevel gear pair is arranged between the first gear shaft and the second gear shaft, the rotary driving device further comprises a protective outer sleeve fixedly connected on the gear box body, and a rotary transmission shaft which is transversely arranged in the protective outer sleeve in a penetrating manner and is connected with the first gear shaft is also included; the treatment box further comprises a motor mounting plate fixedly connected with the outer protective sleeve on the peripheral wall of the treatment box body, and a rotary driving motor for driving the rotary transmission shaft to rotate is mounted on the motor mounting plate.

Drawings

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

FIG. 2 is a schematic view of a portion of the structure of the present utility model;

FIG. 3 is a schematic perspective view of a flocculation adjustment structure in the present utility model;

fig. 4 is a schematic cross-sectional structure of the rotary driving device in the present utility model.

In the figure: 1. a total sewage outlet; 2. transmitting the outer tube; 3. a transmission auger; 4. a transmission motor; 5. a box support; 6. a first drain pipe; 7. a first blowdown auger; 8. a second drain pipe; 9. a second blowdown auger; 10. a first dirt scraper; 11. a first conical mud bucket; 12. a first scraping rotating shaft; 13. a rotation driving device; 13-1, a motor mounting plate; 13-2, a rotary driving motor; 13-3, a protective outer sleeve; 13-4, rotating a transmission shaft; 13-5, a first gear shaft; 13-6, bevel gear pair; 13-7, a gear box body; 13-8, a second gear shaft; 13-9, rotating the mounting member; 14. a medium sedimentation zone; 15. a second scraping rotating shaft; 16. a second dirt scraper; 17. a second conical mud bucket; 18. a post-settling zone; 19. a clarification zone; 20. a first rear partition; 21. a second rear partition; 22. a treatment box body; 23. a slag stirring plate; 24. a slag stirring driving device; 24-1, a driving motor; 24-2, connecting the rotating shaft; 24-3, a driving gear pair; 25. a sedimentation sloping plate; 26. a first front bulkhead; 27. a slag collecting groove; 28. a flocculation adjustment structure; 28-1, a first dosing chamber; 28-2, a first stirring unit; 28-3, a second dosing chamber; 28-4, a second stirring unit; 28-5, a third dosing chamber; 28-6, a first dosing baffle; 28-7, an upper water through hole; 28-8, a second dosing baffle; 29. a water inlet pipe section; 30. a second front bulkhead; 31. a front sedimentation zone; 32. a lower water port; 33. a first sludge discharge pipeline; 34. a mud pump; 35. and a second sludge discharge pipeline.

Detailed Description

For a further understanding of the utility model, its features and advantages, the following examples are set forth in detail:

Referring to fig. 1, the washing wastewater treatment system of the present utility model includes a treatment tank 22, and a tank holder 5 for supporting the treatment tank 22. A first conical mud bucket 11 and a second conical mud bucket 17 are arranged at the opening of the lower part of the treatment box body 22. The inner cavity of the treatment box body 22 is fixedly connected with a first rear partition board 20 and a second front partition board 30 which are distributed along the length direction of the treatment box body, the inner cavity of the treatment box body 22 is divided into a clarification area 19, a total sedimentation area and a flocculation area, wherein the first rear partition board 20 is of a bending structure. The utility model also comprises a liquid outlet which is arranged on the treatment box body 22 and is communicated with the clarification area 19, and a water inlet pipe section 29 which is arranged on the treatment box body 22 and is communicated with the flocculation area. The total sedimentation zone is communicated with the clarification zone 19 at the upper part, and the flocculation zone is communicated with the total sedimentation zone at the lower part;

as shown in fig. 1, a flocculation adjusting structure 28 is arranged in the flocculation area, further referring to fig. 3, in this embodiment, the flocculation adjusting structure 28 includes a first dosing partition 28-6 and a second dosing partition 28-8 which are fixedly connected in the flocculation area and are vertically arranged, the flocculation area is divided into a first dosing cavity 28-1, a second dosing cavity 28-3 and a third dosing cavity 28-5, and a water inlet is formed in the upper portion of the first dosing cavity 28-1; the first dosing chamber 28-1 and the second dosing chamber 28-3 are in communication at a lower portion, and the second dosing chamber 28-3 and the third dosing chamber 28-5 are in communication at an upper portion. A lower water port 32 communicating with the total sedimentation area is connected to the lower portion.

As shown in fig. 3, a through groove which is used for communicating the second dosing cavity 28-3 and the third dosing cavity 28-5 is arranged at the upper part of the first dosing baffle plate 28-6, and an upper water through port 28-7 is arranged on the through groove; the lower edge of the second dosing baffle 28-8 is positioned above the bottom surface of the flocculation zone to form a channel through which liquid can flow; a water inlet pipe section 29 is installed at the water inlet opening on the first dosing chamber 28-1. In the actual working process, an acid-base regulating agent is respectively added into the first dosing cavity 28-1, a coagulant is added into the second dosing cavity 28-3, and a flocculant is added into the third dosing cavity 28-5 through an external dosing machine, so that the pH value of wastewater is regulated, suspended matters dispersed in a liquid phase are condensed to form particles through physical and chemical actions, and the preliminary precipitation operation of the wastewater is realized.

After entering the first dosing chamber 28-1 through the water inlet pipe section 29, the sewage sequentially passes through the three dosing chambers according to the S-shaped flow direction and then enters the total sedimentation area through the third dosing chamber 28-5, and the flow direction is designed into an upper S shape and a lower S shape so as to increase the sewage residence time.

In addition, in order to accelerate the pH adjustment and coagulation, flocculation processes, a first stirring unit 28-2 is provided in each of the first and second dosing chambers 28-1 and 28-3, and a second stirring unit 28-4 is provided in the third dosing chamber 28-5. Wherein, the first stirring unit 28-2 comprises a stirring rotating shaft which is longitudinally arranged, a stirring disk is arranged at the lower end part of the stirring rotating shaft, and a plurality of groups of stirring blades which are respectively bent upwards and downwards are arranged on the peripheral surface of the stirring disk; and a gear motor for driving the stirring rotating shaft to rotate, wherein the gear motor is fixedly connected with the top of the processing box body 22 through a section bar and a mounting plate. The second stirring unit 28-4 includes a rotating shaft disposed longitudinally, on which a frame type stirring frame is mounted, and a speed reducing motor for driving the rotating shaft to rotate. Also, the above-mentioned gear motor is fixedly mounted on the top of the treatment tank 22 by means of a profile and a mounting plate.

As shown in fig. 1, a second rear partition plate 21 and a first front partition plate 26 are arranged in the sedimentation zone and distributed along the length direction of the sedimentation zone, so that the total sedimentation zone is divided into a front sedimentation zone 31, a middle sedimentation zone 14 and a rear sedimentation zone 18 which are communicated with each other; in the middle sedimentation zone 14, a plurality of groups of sedimentation inclined plates 25 are arranged in an array, and by arranging a plurality of groups of sedimentation inclined plates 25, a channel for sedimentation of solid sediment can be formed between two adjacent sedimentation inclined plates 25.

In addition, the second rear partition plate 21 is bent, the first front partition plate 26 is inclined, and in this embodiment, the second rear partition plate 21 and the first rear partition plate 20 are bent in a uniform manner, and each of them includes a vertical plate portion and an inclined plate portion, wherein the inclined direction of the inclined plate portion is inclined from top to bottom in a direction approaching the flocculation adjustment structure 28, and the inclined direction of the first front partition plate 26 is uniform with the inclined direction of the inclined plate portion. By the above arrangement, the waste water can be blocked when it is directed to the first front separator 26, the second rear separator 21 and the first rear separator 20, and the sedimentation rate of impurities in the waste water can be further accelerated.

In the present embodiment, the upper end portion of the first front partition plate 26 is slightly higher than the top portions of the plurality of sets of the swash plates 25, the top portion of the second rear partition plate 21 is higher than the top portions of the plurality of sets of swash plates 25, and the top portions of the second rear partition plate 21 and the first rear partition plate 20 are flush.

In order to avoid that solid sediment in the wastewater is difficult to clean and discharge after being deposited on the inner walls of the first conical mud bucket 11 and the second conical mud bucket 17 for a long time, the embodiment further comprises a second scraping rotating shaft 15 longitudinally arranged in the second conical mud bucket 17, and a second scraping cutter 16 arranged on the second scraping rotating shaft 15 and used for scraping the inner wall of the second conical mud bucket 17; a first scraping rotating shaft 12 is longitudinally arranged in the first conical mud bucket 11, and a first scraping cutter 10 is arranged on the first scraping rotating shaft 12 and used for scraping the inner wall of the first conical mud bucket 11; and the two sets of rotary driving devices 13 are respectively used for driving the first scraping rotating shaft 12 and the second scraping rotating shaft 15 to rotate.

In the present embodiment, as shown in fig. 4, the rotation driving device 13 includes a gear housing 13-7, and the gear housing 13-7 is fixedly coupled to the process housing 22 by a mounting bracket mounted on an inner wall of the process housing 22. The rotary mounting piece 13-9 is arranged at the port of the gear box body 13-7 in a sealing manner, a second gear shaft 13-8 which is connected with the gear box body 13-7 in a rotary manner is longitudinally penetrated in the gear box body 13-7, and the second gear shaft 13-8 is connected with the scraping rotating shaft. The rotary driving device 13 further comprises a first gear shaft 13-5 which is transversely penetrated in the gear box body 13-7 and is rotationally connected with the rotary mounting piece 13-9, a bevel gear pair 13-6 is arranged between the first gear shaft 13-5 and the second gear shaft 13-8, the rotary driving device further comprises a protective outer sleeve 13-3 fixedly connected with the gear box body 13-7, and a rotary transmission shaft 13-4 which is transversely arranged in the protective outer sleeve 13-3 and is connected with the first gear shaft 13-5. The rotary driving device 13 further comprises a motor mounting plate 13-1 fixedly connected with the outer protective sleeve 13-3 on the peripheral wall of the processing box 22, and a rotary driving motor 13-2 for driving the rotary transmission shaft 13-4 to rotate is mounted on the motor mounting plate 13-1.

As shown in fig. 1, the present embodiment further comprises a sludge discharge pipe structure for discharging sludge in the pre-settling zone 31 and the clarification zone 19. The sludge discharge pipeline structure comprises a first sludge discharge pipeline 33 arranged at the bottom of the front sedimentation zone 31, and a valve is arranged on the first sludge discharge pipeline 33; a second sludge discharge pipeline 35 arranged at the bottom of the clarification area 19, and a valve is arranged on the second sludge discharge pipeline 35; and a sludge pump 34 connected to the first sludge discharge line 33 and the second sludge discharge line 35.

As shown in fig. 1, the present embodiment further includes a packing auger sewage discharging assembly for discharging sludge in the first and second conical sludge hoppers 11 and 17. The auger sewage disposal assembly comprises a second sewage disposal pipe 8 arranged at the lower opening of a second conical mud bucket 17, and a second sewage disposal auger 9 connected with a second scraping rotating shaft 15 is arranged in the second sewage disposal pipe 8 in a penetrating way; the device also comprises a first blow-down pipe 6 arranged at the lower opening of the first conical mud bucket 11, and a first blow-down auger 7 connected with a first scraping rotating shaft 12 is arranged in the first blow-down pipe 6 in a penetrating way; the sewage treatment device also comprises a transmission outer pipe 2 which is respectively communicated with the second sewage discharge pipe 8 and the first sewage discharge pipe 6, the end part of the transmission outer pipe is provided with a total sewage discharge outlet 1, and a transmission auger 3 is arranged in the transmission outer pipe 2 in a penetrating way; and a transmission motor 4 for driving the transmission auger 3 to rotate.

In order to scrape off and collect oil dirt and scum floating on the surface of the waste water, as shown in fig. 1, the present embodiment further includes a slag receiving groove 27 installed at an upper portion of the second front partition plate 30 and located in the front precipitation zone 31, and a scum plate 23 movable toward/away from the slag receiving groove 27 for scuming impurities located at an upper portion of the total precipitation zone into the slag receiving groove 27, wherein the scum plate 23 is provided with a plurality of groups. The embodiment also comprises a slag-stirring driving device 24 for driving the slag stirring plate 23 to move. In addition, a mounting frame is fixedly welded at the top of the processing box 22, and a slag stirring driving device 24 is mounted on the mounting frame.

As shown in fig. 2, in the present embodiment, the slag-stirring driving device 24 includes two sets of driving gear pairs 24-3 arranged oppositely, a connecting rotating shaft 24-2 connecting the two sets of driving gear pairs 24-3 into a whole is arranged between the two sets of driving gear pairs 24-3, and the slag-stirring plate 23 is connected with the two sets of driving gear pairs 24-3; and a driving motor 24-1 for driving the connection shaft 24-2 to rotate. Further, the driving gear pair 24-3 includes a driving gear and a driven gear rotatably connected to both ends of the mounting frame, and the driving gear and the driven gear are respectively located at both ends of the total sedimentation area; a chain in a closed state is connected between the driving gear and the driven gear in a transmission way; each slag stirring plate 23 is connected with a driving gear pair 24-3 through a bent plate chain section.

The working process comprises the following steps:

After entering a flocculation area from a water inlet pipe section 29, sewage sequentially passes through a first dosing cavity 28-1, a second dosing cavity 28-3 and a third dosing cavity 28-5 according to an S-shaped flow direction and then enters a front sedimentation area 31, and sequentially adds agents such as an acid-base regulator, a coagulant and a flocculant to the first dosing cavity 28-1, the second dosing cavity 28-3 and the third dosing cavity 28-5 through an external dosing machine, so as to regulate the PH value of the cleaning wastewater, and enable suspended matters dispersed in a liquid phase to be agglomerated into particles through physical and chemical actions, thereby realizing the primary sedimentation operation of the sewage; through the arrangement, the trend of the water flow is designed into an upper S shape and a lower S shape so as to increase the residence time of the wastewater;

the mixed liquid in the front sedimentation zone 31 enters the middle sedimentation zone from the upper part, and after entering the middle sedimentation zone, the mixed liquid can separate suspended matters and supernatant liquid in the mixed liquid through a sedimentation inclined plate 25 arranged in the mixed liquid, the sludge is discharged from the bottom into a first conical mud bucket 11 and a second conical mud bucket 17, the supernatant liquid flows into the rear sedimentation zone 18 from the upper part of a second rear partition plate 21 for further sedimentation operation, and the supernatant liquid in the rear sedimentation zone 18 flows into a clarification zone 19 from the upper part of a first rear partition plate 20 and flows out to the outside of a treatment box 22 for recycling through a water outlet communicated with the clarification zone 19; simultaneously, the slag stirring driving device 24 drives the slag stirring plates 23 to synchronously move, so that oil stains and scum floating on the liquid surface of the mixed liquid are scraped and transferred into the slag collecting groove 27.

In the actual working process, the sludge sediment in the front sedimentation zone 31 and the clarification zone 19 is discharged through a sludge discharge pipeline structure formed by a first sludge discharge pipeline 33, a sludge discharge pump 34 and a second sludge discharge pipeline 35; sludge sediment in the first conical sludge hopper 11 and the second conical sludge hopper 17 is discharged through the auger sewage discharging assembly.

Claims

1. A cleaning wastewater treatment system is characterized in that: comprises a treatment box body (22), wherein a first conical mud bucket (11) and a second conical mud bucket (17) are arranged at the opening of the lower part of the treatment box body (22); a first rear partition board (20) and a second front partition board (30) which are distributed along the length direction of the inner cavity of the treatment box body (22) are fixedly connected with the inner cavity of the treatment box body (22), the inner cavity of the treatment box body (22) is divided into a clarification area (19), a total sedimentation area and a flocculation area, and a flocculation adjusting structure (28) is arranged in the flocculation area; the total sedimentation area is communicated with the clarification area (19) at the upper part, and the flocculation area is communicated with the total sedimentation area at the lower part; the sedimentation zone is provided with a second rear baffle (21) and a first front baffle (26) which are distributed along the length direction of the sedimentation zone, and the total sedimentation zone is divided into a front sedimentation zone (31) and a middle sedimentation zone (14) and a rear sedimentation zone (18) which are communicated with each other; a plurality of groups of sedimentation inclined plates (25) distributed in an array are arranged in the middle sedimentation zone (14); a second scraping rotating shaft (15) is longitudinally arranged in the second conical mud bucket (17), and a second dirt scraping knife (16) is arranged on the second scraping rotating shaft (15) and used for scraping the inner wall of the second conical mud bucket (17); a first scraping rotating shaft (12) is longitudinally arranged in the first conical mud bucket (11), and a first dirt scraping knife (10) is arranged on the first scraping rotating shaft (12) and used for scraping the inner wall of the first conical mud bucket (11); the device also comprises two groups of rotary driving devices (13) which are respectively used for driving the first scraping rotating shaft (12) and the second scraping rotating shaft (15) to rotate; the device also comprises a sludge discharge pipeline structure for discharging sludge sediment in the front sedimentation zone (31) and the clarification zone (19); the sludge discharge device also comprises an auger sewage discharge assembly which is used for discharging sludge sediment in the first conical sludge hopper (11) and the second conical sludge hopper (17).

2. The cleaning wastewater treatment system of claim 1, wherein: the slag collecting device further comprises a slag collecting groove (27) which is arranged at the upper part of the second front baffle plate (30) and is positioned in the front precipitation zone (31), a slag shifting plate (23) which can move towards/away from the slag collecting groove (27) and a slag shifting driving device (24) which is used for driving the slag shifting plate (23) to move, wherein the slag shifting plate is used for shifting impurities at the upper part of the total precipitation zone into the slag collecting groove (27).

3. The cleaning wastewater treatment system of claim 2, wherein: the slag stirring driving device (24) comprises two groups of driving gear pairs (24-3) which are oppositely arranged, a connecting rotating shaft (24-2) which is used for connecting the two groups of driving gear pairs (24-3) into a whole is arranged between the two groups of driving gear pairs, and a slag stirring plate (23) is connected with the two groups of driving gear pairs (24-3); and a driving motor (24-1) for driving the connecting rotating shaft (24-2) to rotate.

4. The cleaning wastewater treatment system of claim 1, wherein: the auger sewage disposal assembly comprises a second sewage disposal pipe (8) arranged at the lower opening of a second conical mud bucket (17), and a second sewage disposal auger (9) connected with a second scraping rotating shaft (15) is arranged in the second sewage disposal pipe (8) in a penetrating way; the device also comprises a first blow-down pipe (6) arranged at the lower opening of the first conical mud bucket (11), and a first blow-down auger (7) connected with a first scraping rotating shaft (12) is arranged in the first blow-down pipe (6) in a penetrating way; the sewage treatment device further comprises a transmission outer pipe (2) which is respectively communicated with the second sewage discharge pipe (8) and the first sewage discharge pipe (6) and is provided with a total sewage discharge outlet (1) at the end part, and a transmission auger (3) is arranged in the transmission outer pipe (2) in a penetrating way; the device also comprises a transmission motor (4) for driving the transmission auger (3) to rotate.

5. The cleaning wastewater treatment system of claim 1, wherein: the sludge discharge pipeline structure comprises a first sludge discharge pipeline (33) arranged at the bottom of the front sedimentation zone (31), and a valve is arranged on the first sludge discharge pipeline (33); the system also comprises a second sludge discharge pipeline (35) arranged at the bottom of the clarification area (19), and a valve is arranged on the second sludge discharge pipeline (35); the device also comprises a sludge pump (34) connected with the first sludge discharge pipeline (33) and the second sludge discharge pipeline (35).

6. The cleaning wastewater treatment system of claim 1, wherein: the flocculation adjusting structure (28) comprises a first dosing baffle (28-6) and a second dosing baffle (28-8) which are fixedly connected in a flocculation area and are vertically arranged, the flocculation area is divided into a first dosing cavity (28-1), a second dosing cavity (28-3) and a third dosing cavity (28-5), and a water inlet is formed in the upper part of the first dosing cavity (28-1); the first dosing cavity (28-1) is communicated with the second dosing cavity (28-3) at the lower part, and the second dosing cavity (28-3) is communicated with the third dosing cavity (28-5) at the upper part; a first stirring unit (28-2) is arranged in each of the first dosing cavity (28-1) and the second dosing cavity (28-3), and a second stirring unit (28-4) is arranged in the third dosing cavity (28-5).

7. The cleaning wastewater treatment system of claim 1, wherein: the rotary driving device (13) comprises a gear box body (13-7), a rotary mounting piece (13-9) is arranged at a port of the gear box body (13-7) in a sealing manner, a second gear shaft (13-8) which is in rotary connection with the gear box body is longitudinally penetrated in the gear box body (13-7), a first gear shaft (13-5) which is transversely penetrated in the gear box body (13-7) and is in rotary connection with the rotary mounting piece (13-9), a bevel gear pair (13-6) is arranged between the first gear shaft (13-5) and the second gear shaft (13-8), a protective outer sleeve (13-3) which is fixedly connected with the gear box body (13-7) is further arranged, and a rotary transmission shaft (13-4) which is transversely arranged and is connected with the first gear shaft (13-5) is penetrated in the protective outer sleeve (13-3); the device also comprises a motor mounting plate (13-1) fixedly connected with the protective outer sleeve (13-3) on the peripheral wall of the treatment box body (22), and a rotary driving motor (13-2) for driving the rotary transmission shaft (13-4) to rotate is mounted on the motor mounting plate (13-1).