CN120136269A

CN120136269A - A sewage treatment device

Info

Publication number: CN120136269A
Application number: CN202510610159.3A
Authority: CN
Inventors: 张日生; 曾宪京
Original assignee: Guangdong Linton Intelligent Equipment Co ltd
Current assignee: Guangdong Linton Intelligent Equipment Co ltd
Priority date: 2025-05-13
Filing date: 2025-05-13
Publication date: 2025-06-13
Anticipated expiration: 2045-05-13
Also published as: CN120136269B

Abstract

The invention belongs to the technical field of sewage treatment, and particularly relates to a sewage treatment device which comprises a frame and a flocculation tank, wherein the inner peripheral surface of the upper end of the flocculation tank is an annular surface, the inner peripheral surface of the lower end of the flocculation tank is a conical surface, a material collecting groove is arranged at the bottom end of the flocculation tank, a main shaft and scraping plates are arranged above the material collecting groove, the main shaft is assembled on the frame in a sliding manner up and down, the main shaft is assembled on the frame in a rotating manner around the axis of the flocculation tank, a plurality of scraping plates are circumferentially distributed on the periphery of the main shaft around the axis of the flocculation tank, and the scraping plates are assembled on the main shaft in a sliding manner along the radial direction of the flocculation tank. The invention can solve the technical problem of main shaft vibration caused by large fluctuation of resistance when the scraping plate scrapes the sludge with uneven thickness and viscosity distribution.

Description

Sewage treatment device

Technical Field

The invention belongs to the technical field of sewage treatment, and particularly relates to a sewage treatment device.

Background

The flocculation tank is a key device in the sewage treatment process, and is mainly used for promoting aggregation and sedimentation of suspended particles in water, and the core principle is that a flocculating agent is added into sewage in the tank, so that tiny particles are combined into larger flocculation after collision, and the subsequent separation is facilitated. After flocculation, sewage generates sludge, and if the sludge adhered to the inner wall of the flocculation tank is not removed in time, malodorous gas is easily generated, so that the operation environment is deteriorated, and the human health is endangered. In the prior art, nylon brushes or plastic scrapers are usually used for cleaning manually, and the working efficiency is low.

The chinese patent document with the publication number CN219603341U discloses a sediment separating mechanism, which comprises a flocculation tank, the left side of flocculation tank is linked together with the one end of inlet tube, the upper surface of flocculation tank inner wall and the upper surface rigid coupling of baffle, the last surface mounting of flocculation tank has the feeding hopper, the upper surface of flocculation tank is provided with mixing assembly, the right side of flocculation tank is linked together with the left surface of precipitation tank through connecting square pipe, drive spliced pole and scraper blade through servo motor and rotate, the scraper blade is rotatory to be scraped at the dirt of precipitation tank inner wall, the precipitation tank bottom is conical simultaneously, the dirt after scraping is discharged the precipitation tank through the mud pipe. The patent can clear stubborn dirt adhered to the inner wall of a flocculation tank, but when oil, colloid or organic matters are contained in sludge, the matters are easy to agglomerate, after flocculation is finished, areas with larger thickness and viscosity are easy to form on a conical surface, when the patent is adopted to scrape the sludge in the areas, the peripheral surface of the scraper needs to cover a bus of the conical surface and is tightly attached to the conical surface because the position of the scraper in the vertical direction is unchanged, the resistance born by the scraper when the scraper moves is uneven due to uneven sludge distribution, the torque is rapidly increased in the areas with larger viscosity and thickness of the sludge, the torque is correspondingly reduced in the areas with thinner sludge, the main shaft driving the scraper to rotate can experience strong fluctuation of the torque in the rotating process, and the fluctuation of the torque can cause vibration of the main shaft and damage to the main shaft and connecting parts of the main shaft.

Disclosure of Invention

The invention provides a sewage treatment device, which aims to solve the technical problem of main shaft vibration caused by large resistance fluctuation when a scraper scrapes sludge with uneven thickness and viscosity distribution.

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

The sewage treatment device comprises a frame and a flocculation tank assembled on the frame, wherein the inner peripheral surface of the upper end of the flocculation tank is an annular surface, the inner peripheral surface of the lower end of the flocculation tank is a conical surface, the diameter of the conical surface gradually decreases from top to bottom, the bottom end of the flocculation tank is provided with a material collecting tank, and a main shaft and a scraping plate are arranged above the material collecting tank;

The main shaft is assembled on the frame in a vertically sliding way, and is assembled on the frame in a rotating way around the axis of the flocculation tank;

the number of the scrapers is multiple, the scrapers are circumferentially distributed on the periphery of the main shaft around the axis of the flocculation tank, and the scrapers are radially and slidably assembled on the main shaft along the flocculation tank;

when the scraper blade is farthest from the main shaft, the side surface of the scraper blade which is away from the main shaft is attached to the annular surface, when the scraper blade is closest to the main shaft, the side surface of the scraper blade which is close to the main shaft is positioned in the material collecting groove in the vertical direction, and when the scraper blade pushes sludge to the material collecting groove, the bottom end surface of the scraper blade moves along the generatrix of the conical surface, and the gap between the adjacent scraper blades is gradually reduced.

When the scraping plate contacts with the annular surface, the scraping plate rotates around the axis of the flocculation tank to scrape the sludge on the annular surface, and the scraping plate moves up and down to increase the cleaning range of the scraping plate, so that the scraping plate can cover the whole annular surface; when thicker sludge exists in a part of areas, the position of the main shaft is adjusted, so that a certain distance exists between the bottom end surface of the scraping plate and the conical surface in the vertical direction, the scraping plate moves along the direction parallel to the generatrix of the conical surface, the accumulated higher sludge is scraped, the position of the main shaft is adjusted, so that the distance between the bottom end surface of the scraping plate and the conical surface in the vertical direction is shortened in the second scraping process, the distance between the bottom end surface of the scraping plate and the conical surface is continuously shortened until the bottom end surface of the scraping plate contacts with the conical surface, the sludge is scraped in a layered manner, the excessive force difference suffered by each scraping plate is effectively avoided, the main shaft is prevented from being subjected to larger fluctuation force, the main shaft can keep a static state when the scraping plate cleans the conical surface, the main shaft does not need to rotate, the main shaft abrasion is reduced, the moving track of the scraping plate can cover the conical surface along with the main shaft, the gap between the scraping plate is gradually reduced in the horizontal direction, the gap between the scraping plate is designed to have better blocking resistance, the gap is not blocked, the sludge does not need to be scraped, and the integrated with high-speed is improved in the integrated stirring device, and the integrated speed is improved in the radial stirring and stirring speed is realized.

Further, a fixed cylinder is assembled on the main shaft, a groove I with an upward opening is formed between the inner wall of the fixed cylinder and the outer wall of the main shaft, a groove II with a downward opening is arranged in the scraping plate, the groove I is positioned above the groove II, a connecting pipe is assembled between the fixed cylinder and the scraping plate, and the connecting pipe is used for communicating the groove I and the groove II.

The flocculant is placed in the groove I, enters the groove II through the connecting pipe and flows out along the bottom end opening of the groove II, the position of the main shaft is adjusted, the bottom end opening of the groove II is always positioned in sewage, the flocculant is prevented from splashing, the resource waste is prevented, the main shaft rotates in the process of adding the flocculant, the scraping plate slides radially and reciprocally along the main shaft, the flocculant is rapidly diffused into the sewage, and the colloid protection phenomenon caused by the overhigh concentration of the flocculant is prevented.

Further, a sealing cover is arranged on the main shaft and is positioned above the fixed cylinder, the sealing cover is circumferentially and relatively fixed, axially and relatively slidably arranged on the main shaft, a feeding pipe is arranged on the sealing cover, and when the sealing cover moves downwards to be in contact with the fixed cylinder, the sealing cover seals an opening at the top end of the groove.

After the top opening of the groove I is sealed by the sealing cover, high-pressure gas is introduced into the groove I through the feeding pipe, the connecting pipe is purged, all flocculating agents are guaranteed to enter the flocculation tank, the flocculating agents are prevented from accumulating in the connecting pipe, the flocculating agents are difficult to grasp the adding amount of the flocculating agents, the influence on the flocculation effect of sewage is avoided, meanwhile, the flocculating agents are prevented from being deactivated due to the fact that the flocculating agents stay in a pipeline for a long time, the connecting pipe is blocked, high-pressure water flow can be introduced into the groove I through the feeding pipe after the top opening of the groove I is sealed by the sealing cover, the sludge in the groove II is washed, preparation is made for adding the flocculating agents next time, the conical surface is washed, the feeding pipe is fixed in orientation and does not rotate along with the main shaft, and substances introduced into the feeding pipe are convenient to replace.

Further, the fixed cylinder is provided with a pulley I and a pulley II, the pulley I and the pulley II are provided with annular grooves for installing connecting pipes, the axes around which the pulley I and the pulley II rotate are parallel to each other and horizontally extend, the pulley I is positioned below the pulley II, the connecting pipes are respectively arranged on the pulley I and the pulley II, an elastic piece I is arranged between the pulley I and the fixed cylinder and is provided with elastic potential energy for driving the pulley to move downwards, an elastic piece II is arranged between the pulley II and the fixed cylinder, and the elastic piece II is provided with elastic potential energy for driving the pulley II to move upwards.

The length of the connecting pipe is longer to meet the requirement that the scraping plate slides back and forth along the radial direction of the main shaft, the connecting pipe is wound on the pulley I and the pulley II, when the scraping plate moves away from the main shaft, the pulley I moves upwards, the pulley II moves downwards, when the scraping plate moves towards the direction close to the main shaft, the pulley I moves downwards under the action of the elastic piece I, the pulley II moves upwards under the action of the elastic piece II, and the connecting pipe is always in a tight state, so that friction collision between the connecting pipe and the scraping plate is avoided.

Further, a first moving seat and a second moving seat are arranged on the main shaft, a first rotating plate is rotatably arranged between the first moving seat and the scraping plate, a second rotating plate is rotatably arranged between the second moving seat and the scraping plate, the first moving seat and the second moving seat are vertically and slidably arranged on the main shaft, the first rotating plate and the second rotating plate which are arranged on the same scraping plate are horizontally arranged around the axis and are parallel to each other, the first moving seat and the second moving seat are close to each other or are far away from each other, and the first rotating plate and the second moving seat are driven to reversely rotate synchronously so that the scraping plate is close to or far away from the main shaft.

Further, a first guide rod is fixedly arranged on the scraping plate, the extending direction of the first guide rod is the same as the moving direction of the scraping plate, and the first guide rod is slidingly arranged on the main shaft

Further, the first guide rod is sleeved with the first guide tube, the first guide rod is assembled on the first guide tube in a sliding mode along the moving direction of the scraping plate, and the first guide tube is assembled on the main shaft in a sliding mode along the moving direction of the scraping plate.

The first guide pipe can increase the length of the whole guide mechanism, so that the scraping plate is always constrained by the first guide rod and the first guide pipe in the moving process, and the stability of the scraping plate in the moving process is improved.

Further, the bottom end surface of the scraping plate is parallel to the conical surface.

Further, the flocculation tank is provided with a fixed plate and a second annular cylinder, the second annular cylinder is assembled on the fixed plate, the top end of the second annular cylinder is positioned above the fixed plate, an upward opening groove III is formed among the second annular cylinder, the fixed plate and the flocculation tank, sewage to be treated is contained in the groove III, and the sewage flows into the flocculation tank along the inner hole of the second annular cylinder when the sewage is higher than the top surface of the second annular cylinder.

Further, the first annular cylinder is assembled on the fixed plate in a vertically sliding way so as to change the height of the sewage in the groove when the sewage flows into the flocculation tank.

The sewage is added into the flocculation tank in an overflow mode, water flows enter the flocculation tank in a stable and uniform mode, short flow phenomenon is reduced, uniformity and stability of water flow in the whole tank are improved, and the height of the groove III can be flexibly adjusted under the condition that the quality of inflow water or the water quantity fluctuates greatly so as to maintain stable treatment effect.

The beneficial effects of the invention are as follows:

① The scrapers move along the direction of the generatrix of the conical surface, the layered scraping of the scrapers on the sludge is realized by adjusting the vertical distance between the scrapers and the conical surface, uneven load caused by that one of the scrapers pushes excessive sludge is avoided, the rotation of the main shaft is influenced, and the abrasion is increased;

② In addition, when the scraping plate does not scrape the sludge, the scraping plate can move up and down along the radial direction of the main shaft and stir the sewage, and the stirring function and the scraping function are integrated on the scraping plate, so that the device integration level is high;

③ The sealing cover can seal the opening of the top surface of the first groove, high-pressure gas is introduced into the first groove through the feeding pipe arranged on the sealing cover, so that flocculating agents added into the first groove are all introduced into the flocculation tank, residual flocculating agents in the connecting pipe are prevented from interfering with the control of the adding amount of the flocculating agents by workers, high-pressure water flow is introduced into the first groove through the feeding pipe, sludge entering the second groove in the scraping process is washed, the next flocculating agent adding is facilitated, the conical surface can be washed, and the maintenance is facilitated.

Drawings

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

FIG. 2 is a schematic diagram of a flocculation tank and the interior of the flocculation tank;

FIG. 3 is a schematic diagram of mounting structures of a first rotating plate and a second rotating plate;

FIG. 4 is a schematic view of the installation structure of the first guide rod and the second guide rod;

FIG. 5 is a schematic diagram of the mounting structure of the second and third linear actuators;

FIG. 6 is a schematic view of a first housing mechanism;

FIG. 7 is a schematic view of a second housing mechanism;

fig. 8 is a schematic view of the mounting structure of the closure.

Reference numerals illustrate:

1. Flocculation module, 11, flocculation tank, 111, annular surface, 112, conical surface, 12, water inlet pipe, 13, material collecting tank, 14, material outlet pipe, 15, fixing plate, 16, moving frame, 161, first installation plate, 162, first annular cylinder, 163, second annular cylinder, 164, third groove, 17, first linear actuator;

2. a frame;

3. A scraping module; 31, a second mounting plate, 32, a main shaft, 33, a scraping plate, 34, a first rotating plate, 35, a second rotating plate, 36, a second linear actuator, 37, a third linear actuator, 38, a first movable seat, 39, a second movable seat, 310, a fourth linear actuator, 311, a motor, 312, a first guide rod, 313 and a first guide pipe;

4. The flocculant adding mechanism comprises a flocculant adding mechanism, a fixing cylinder, a connecting pipe, a groove I, a groove 44, a groove II, a guide pipe II, a guide rod 47, an elastic piece I, a pulley I, a guide pipe III, a guide rod 410, a guide rod III, a guide rod II, a guide rod 411, an elastic piece II, a pulley II, a guide rod 413, a sealing cover, a guide pipe 415, a feed pipe 416, a mounting ring I, a guide rod 417, a linear bearing 418, a rotating bearing I, a guide rod 419, a mounting ring II, a guide rod 420, a rotating bearing II, a guide rod 421 and a linear actuator V.

Detailed Description

The following description of the embodiments of the present invention will be made more complete and clear to those skilled in the art by reference to the figures of the embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

A sewage treatment device, as shown in figure 1, comprises a flocculation module 1 and a frame 2 provided with the flocculation module 1, wherein the flocculation module 1 comprises a flocculation tank 11 and an overflow mechanism arranged on the flocculation tank 11, and a scraping module 3 for scraping dirt on the inner wall of the flocculation tank 11 is arranged on the frame 2.

As shown in fig. 2, the flocculation tank 11 comprises a tank body and a tank bottom, the tank body is of a cylindrical shell-shaped structure which is penetrated up and down, the side surface of the tank body is an annular surface 111, a water inlet pipe 12 is assembled on the side surface of the tank body, the tank bottom is of a truncated cone shell-shaped structure with a closed bottom end, the inner side surface of the tank bottom is a conical surface 112, the diameter of the conical surface 112 is sequentially reduced from top to bottom, a material collecting groove 13 is fixedly arranged at the bottom end of the tank bottom, and a material discharging pipe 14 is assembled at the bottom end of the material collecting groove 13; the overflow mechanism comprises a fixed plate 15, a movable frame 16 and a linear actuator I17 for driving the movable frame 16 to move up and down, the water inlet pipe 12 is positioned above the fixed plate 15, a through hole I which penetrates up and down is formed in the fixed plate 15, the outer peripheral surface of the fixed plate 15 is fixedly connected to the inner wall of the flocculation tank 11, the movable frame 16 comprises a first mounting plate 161, a first annular cylinder 162 and a second annular cylinder 163, the first mounting plate 161 is positioned below the fixed plate 15, the first annular cylinder 162 and the second annular cylinder 163 are fixedly assembled on the top surface of the first mounting plate 161, a plurality of through holes II are formed in the first mounting plate 161 positioned between the first annular cylinder 162 and the second annular cylinder 163, the first annular cylinder 162 is positioned in the second annular cylinder 163, the outer peripheral surface of the second annular cylinder 163 is attached to the inner peripheral surface of the through hole I, and a groove III 164 with an upward opening annular structure is formed among the second annular cylinder 163, the fixed plate 15 and the tank body; the first linear actuator 17 is an electric push rod or a hydraulic rod, the driving direction is the up-down direction, the fixed end of the first linear actuator 17 is fixedly assembled on the fixed plate 15, the output end of the first linear actuator 17 is fixedly assembled on the first mounting plate 161, the first linear actuator 17 is used for driving the movable frame 16 to move up and down, and then the vertical distance between the top surface of the second annular cylinder 163 and the fixed plate 15 is changed, namely the height of the third groove 164 is changed.

The flocculation module 1 is used in the mode that sewage to be treated is introduced into the flocculation tank 11 through the water inlet pipe 12, the sewage flows into the groove III 164, flows into the flocculation tank 11 through the through hole II after flowing into the groove III 164, flows into the flocculation tank 11 in a relatively stable and uniform mode, is beneficial to reducing short flow phenomenon, improving uniformity and stability of water flow in the whole tank, and is beneficial to flocculation reaction, the height of the groove III 164 is adjusted through the linear actuator I17, the flow of the sewage entering the flocculation tank 11 is dynamically regulated, and a stable treatment effect is maintained under the condition that the quality of inflow water or the fluctuation of water quantity is relatively large.

The frame 2 is fixedly placed on the ground, and the frame 2 is provided with a mounting groove for the flocculation tank 11 to be vertically placed.

As shown in fig. 3, the scraping module 3 includes a main shaft 32, a plurality of scrapers 33 arranged on the periphery of the main shaft 32, a first driving mechanism that drives the scrapers 33 to approach or separate from the main shaft 32, a second driving mechanism that drives the scrapers 33 to move up and down, and a third driving mechanism that drives the scrapers 33 to rotate around the axis of the flocculation tank 11. The main shaft 32 is assembled on the second mounting plate 31, the second mounting plate 31 is assembled on the frame 2, the main shaft 32 is of a vertically extending circular tubular structure, referring to fig. 2, the number of the scrapers 33 is three, when the side surfaces of the three scrapers 33 are mutually attached, a circular tubular structure which is coaxial with the main shaft 32 and vertically extends is formed, the bottom end surface of the scrapers 33 is parallel to the conical surface 112, the outer diameter of a circular tube formed by the scrapers 33 is not larger than the inner diameter of the first annular tube 162, and the inner diameter of a circular tube formed by the scrapers 33 is not larger than the inner diameter of the collecting tank 13.

As shown in fig. 4, the first driving mechanism includes a first rotating plate 34, a second rotating plate 35, a second linear actuator 36 for driving the first rotating plate 34 to rotate, and a third linear actuator 37 for driving the second rotating plate 35 to rotate, wherein each scraper 33 is rotatably assembled with the first rotating plate 34 and the second rotating plate 35, one end of the first rotating plate 34 is rotatably assembled with the scraper 33, the other end is rotatably assembled with the first moving seat 38, one end of the second rotating plate 35 is rotatably assembled with the scraper 33, the other end is rotatably assembled with the second moving seat 39, the first moving seat 38 is positioned right above the second moving seat 39, the first rotating plate 34 and the second rotating plate 35 connected with the same scraper 33 are rotatably arranged horizontally around axes, the second linear actuator 36 and the third linear actuator 37 are electric push rods or hydraulic rods, the second linear actuator 36 and the third linear actuator 37 are both driven up and down, as shown in fig. 5, the fixed ends of the second linear actuator 36 and the third linear actuator 37 are fixedly assembled in the main shaft 32, the output end of the second linear actuator 36 is fixedly connected with the first moving seat 38, the output end of the third linear actuator 37 is fixedly connected with the second moving seat 39, the second linear actuator 37 is driven by the second linear actuator 37 and the first rotating seat 33 and the second linear actuator 37, the second linear actuator 37 is driven by the first rotating rod or the second rotating seat 37 in the opposite direction, and the first rotating seat 32 is driven by the opposite direction, or the first rotating shaft and the second linear actuator 37 is driven by the rotation, and the second linear actuator 37 is driven by the opposite the rotation, and the second linear actuator, and the second rotating seat is driven by the spindle, and the opposite the linear actuator is driven by the spindle, and the opposite the rotation, and the speed is driven by the rotating and the speed and the rotating speed and the speed and is driven.

The second driving mechanism includes a fourth linear actuator 310, the fourth linear actuator 310 is an electric push rod or a hydraulic rod, the driving direction of the fourth linear actuator 310 is an up-down direction, referring to fig. 2, the fixed end of the fourth linear actuator 310 is fixedly assembled on the frame 2, the output end of the fourth linear actuator 310 is fixedly connected with the second mounting plate 31, the fourth linear actuator 310 drives the second mounting plate 31 to move up and down, and then drives the scraping plate 33 to move up and down.

The third driving mechanism comprises a motor 311, the motor 311 is a servo motor or a stepping motor, the motor 311 is fixedly assembled on the second mounting plate 31, an output shaft of the motor 311 extends up and down, the main shaft 32 is coaxially and fixedly assembled on the output shaft of the motor 311, and the motor 311 is started to drive the main shaft 32 and the scraping plate 33 to rotate around the axis of the main shaft 32.

In order to improve the stability of the scraping plates 33 during rotation, two parallel guide rods 312 are fixedly connected to each scraping plate 33, a guide pipe 313 is sleeved outside the guide rods 312, the guide rods 312 and the guide pipes 313 are horizontally arranged and extend along the radial direction of the main shaft 32, a through hole III matched with the guide pipe 313 is formed in the main shaft 32, limiting plates are arranged at two ends of the guide pipe 313 and used for preventing the guide pipe 313 from being separated from the main shaft 32.

The movement mode of the scraping module 3 is as follows:

The cleaning tank body comprises a linear actuator II 36 and a linear actuator III 37, which drive a movable seat I38 and a movable seat II 39 to be close to each other, a scraper 33 is driven by a rotary plate I34 and a rotary plate II 35 to move in a direction deviating from a main shaft 32, when the scraper 33 contacts with an annular surface 111, a motor 311 is started to drive the scraper 33 to rotate, the scraper 33 scrapes off the sludge attached to the annular surface 111 and the scraped-off sludge is mixed into sewage, a linear actuator IV 310 drives the scraper 33 to move up and down, and the position of the scraper 33 is changed, so that the scraper 33 can cover the whole annular surface 111;

cleaning the bottom of the tank:

① The second linear actuator 36 and the third linear actuator 37 drive the first movable seat 38 and the second movable seat 39 to be far away from each other, the scraping plate 33 is attached to the annular surface 111, the fourth linear actuator 310 drives the scraping plate 33 to move downwards, a preset distance I exists between the bottom end surface of the scraping plate 33 and the top end of the conical surface 112, the second linear actuator 36, the third linear actuator 37 and the fourth linear actuator 310 are adjusted, the scraping plate 33 moves towards the collecting tank 13 along the direction parallel to the bus of the conical surface 112, a preset distance I exists between the bottom end surface of the scraping plate 33 and the conical surface 112 all the time in the moving process of the scraping plate 33, sludge located on the moving path of the scraping plate 33 is pushed towards the collecting tank 13, and the sludge in the collecting tank 13 is discharged through the discharging pipe 14;

② The fourth linear actuator 310 drives the scraper 33 to move upwards, the second linear actuator 36 and the third linear actuator 37 drive the first movable seat 38 and the second movable seat 39 to be away from each other, the scraper 33 is attached to the annular surface 111, a preset distance II exists between the bottom end surface of the scraper 33 and the top end of the conical surface 112, the preset distance II is smaller than the preset distance I, the scraper 33 moves along the direction of the collecting groove 13 parallel to the bus of the conical surface 112, and the steps are repeated until the bottom end surface of the scraper 33 is attached to the conical surface 112, and the area corresponding to the scraper 33 is scraped.

The motor 311 drives the scraper 33 to rotate by a predetermined angle, the scraper 33 corresponds to the other area of the conical surface 112, the above step ①② is repeated to clean the other area of the conical surface 112, and the process is repeated until all the areas of the conical surface 112 are cleaned.

When the flocculation tank 11 is not required to be cleaned, the motor 311 drives the scraping plate 33 to rotate, and meanwhile, the linear actuator II 36 and the linear actuator III 37 drive the scraping plate 33 to reciprocate close to or away from the main shaft 32 to stir sewage.

The main shaft 32 is further provided with a flocculant adding mechanism 4, the flocculant adding mechanism comprises a fixed cylinder 41 and a connecting pipe 42, the fixed cylinder 41 is of a cylindrical structure with an opening at the top end and extending up and down, an avoidance hole I is formed in the bottom surface of the fixed cylinder 41, the main shaft 32 is arranged on the avoidance Kong Yina in a penetrating mode and fixedly connected with the inner wall of the avoidance hole I, a circular groove I43 is formed between the fixed cylinder 41 and the main shaft 32, the fixed cylinder 41 is located above the scraping plate 33, one end of the connecting pipe 42 is fixedly connected with the bottom end of the fixed cylinder 41, the other end of the connecting pipe is fixedly connected with the top end of the scraping plate 33, a groove II 44 extending up and down is formed in the scraping plate 33, and the connecting pipe 42 is used for communicating the groove I43 and the groove II 44, according to fig. 4. Adding the flocculant into the groove one 43, allowing the flocculant to enter the groove two 44 through the connecting pipe 42, uniformly distributing the flocculant in sewage along with the rotation of the scraper 33, reducing the splashing of the flocculant, avoiding the waste of resources, avoiding the accumulation of the flocculant and accelerating the diffusion of the flocculant due to the fact that the scraper 33 is always moving and the turbulence near the scraper 33 is large.

In order to prevent the scraper 33 from colliding with the connecting pipe 42 during the rotation movement, the connecting pipe 42 is bent, in this embodiment, there are two bending positions, one bending position is located below, the other bending position is located above, the bending position located below is assembled on the first receiving mechanism, and the bending position located above is assembled on the second receiving mechanism.

As shown in FIG. 6, the first storage mechanism comprises a second guide tube 45, a second guide rod 46 and a first elastic member 47, wherein the second guide tube 45 and the second guide rod 46 extend up and down, the second guide tube 45 is vertically and fixedly assembled on the bottom surface of the fixed cylinder 41, the second guide rod 46 is arranged in the second guide tube 45 in a penetrating manner, the bottom end surface of the second guide rod 46 is positioned below the second guide tube 45, a pulley I48 is rotatably assembled at the bottom end of the second guide rod 46, a connecting pipe 42 positioned at a lower bending position is wound in a ring groove arranged on the pulley I48, the first elastic member 47 is a compression spring, the expansion direction of the first elastic member 47 is in the up-down direction, the first elastic member 47 is positioned in the second guide tube 45, and two ends of the first elastic member 47 are respectively fixedly connected with the second guide rod 46 and the second guide tube 45.

As shown in fig. 7, the second storage mechanism comprises a third guide tube 49, a third guide rod 410 and a second elastic member 411, wherein the third guide tube 49 and the third guide rod 410 extend up and down, the third guide tube 49 is fixedly assembled on the bottom surface of the fixed cylinder 41, the third guide rod 410 is arranged in the third guide tube 49 in a penetrating manner, the top end of the third guide rod 410 is positioned above the bottom end of the third guide tube 49, a second pulley 412 is rotatably assembled on the top end of the third guide rod 410, a water pipe positioned at the bent position above is wound in an annular groove formed in the second pulley 412, the second elastic member 411 is a compression spring, the expansion direction of the second elastic member 411 is in the up-down direction, the second elastic member 411 is positioned in the third guide tube 49, and two ends of the second elastic member 411 are respectively fixedly connected with the third guide rod 410 and the third guide tube 49.

The first and second storage mechanisms operate in such a manner that when the scraper 33 moves away from the main shaft 32, the first pulley 48 moves upward, the second pulley 412 moves downward, the first elastic member 47 and the second elastic member 411 shorten synchronously, when the scraper 33 moves toward the main shaft 32, the first pulley 48 moves under the action of elastic potential energy of the first elastic member 47, the second pulley 412 moves upward under the action of elastic potential energy of the second elastic member 411, tension is always present on the connecting pipe 42, the connecting pipe 42 is prevented from being separated from the ring groove, and friction collision between the connecting pipe 42 and the scraper 33 is prevented.

In order to prevent the flocculant from remaining in the connection pipe 42, as shown in fig. 3 and 8, a closing cap 413 and a fifth linear actuator 421 for driving the closing cap 413 to close the top end opening of the fixing cylinder 41 are provided above the fixing cylinder 41. The sealing cover 413 is of a cylindrical structure with an opening at the bottom end, the feeding pipe 415 is fixedly assembled on the sealing cover 413, the avoidance hole II is formed in the top end of the sealing cover 413, the mounting ring I416 is coaxially arranged in the avoidance Kong Erna, the linear bearing 417 is fixedly assembled on the inner wall of the mounting ring I416, the linear bearing 417 is sleeved on the main shaft 32, the rotating bearing I418 is assembled outside the mounting ring I416, the outer circumferential surface of the inner ring of the rotating bearing I418 is fixedly connected with the outer circumferential surface of the mounting ring I416, the outer circumferential surface of the rotating bearing I418 is fixedly connected with the avoidance Kong Erna circumferential surface, the mounting ring II 419 is fixedly arranged on the bottom surface of the sealing cover 413, the rotating bearing II 420 is assembled outside the mounting ring II 419, the inner ring of the rotating bearing II 420 is fixedly assembled on the mounting ring II, the outer ring of the rotating bearing II 420 is positioned right above the top surface of the fixed cylinder 41, the linear actuator five 421 is an electric push rod or a hydraulic rod, the driving direction of the linear actuator five 421 is in the up-down direction, the fixed end of the linear actuator five 421 is fixedly assembled on the mounting plate II 31, and the output end of the linear actuator five 421 is fixedly connected with the sealing cover 413.

The use mode of the sealing cover 413 and the linear actuator five 421 is that a flocculating agent is introduced into the feeding pipe 415, the flocculating agent enters the groove one 43, after the flocculating agent is added, the linear actuator five 421 drives the sealing cover 413 to move downwards, the outer ring of the rotary bearing two 420 is contacted with the top surface of the fixed cylinder 41, high-pressure gas is introduced into the groove one 43 through the feeding pipe 415, and the flocculating agent remained in the connecting pipe 42 is driven to flow into the flocculation tank 11 by the high-pressure gas. A sealing ring can be fixed on the bottom surface of the outer ring of the second rotary bearing 420, and bearing sealing devices are additionally arranged on the linear bearing 417, the first rotary bearing 418 and the second rotary bearing 420, so that the driving effect of high-pressure gas is ensured. High pressure water flow can be introduced into the first groove 43 through the feed pipe 415, and flows out of the bottom end opening of the second groove 44, so that the second groove 44 and the conical surface 112 are washed.

The application mode of the invention is as follows:

The sewage to be treated is introduced into the groove III 164 through the water inlet pipe 12, the sewage flows into the flocculation tank 11 after overflowing the groove III 164, the scraper 33 is driven by the linear actuator IV 310 to move downwards to the bottom end of the groove II 44 and to be submerged in the sewage, the flocculant is added into the groove I43 through the water inlet pipe 415, the flocculant flows into the sewage from the bottom end of the groove II 44 through the connecting pipe 42, the scraper 33 is driven by the motor 311 to rotate, the flocculant is dispersed in the sewage by the linear actuator IV 36 and the linear actuator III 37 while the scraper 33 is driven by the motor 311 to approach or separate from the main shaft 32, the scraper 33 is driven by the linear actuator IV 310 to move up and down along with the increase of the water level, the sewage in the flocculation tank 11 is fully stirred, and after flocculation, the material in the flocculation tank 11 is conveyed to the next working section through the discharging pipe 14 according to production requirements.

When the flocculation tank 11 needs to be cleaned, the linear actuator II 36 and the linear actuator III 37 are adjusted to enable the scraping plate 33 to be in contact with the annular surface 111 to clean the annular surface 111, when the conical surface 112 is cleaned, the scraping plate 33 moves along the direction parallel to the generatrix of the conical surface 112, the distance between the scraping plate 33 and the conical surface 112 is gradually reduced, the sludge on the conical surface 112 is scraped in a layered manner, the excessive difference of resistance values received in the moving process of different scraping plates 33 is avoided, the deformation of the main shaft 32 is prevented, and meanwhile, the main shaft 32 is kept in a static state in the cleaning process of the scraping plate 33 on the conical surface 112, and the abrasion of the main shaft 32 is avoided.

When maintenance is needed, the top surface of the fixed cylinder 41 is sealed by the sealing cover 413, high-pressure water flow is introduced into the first groove 43, flows out of the opening of the bottom surface of the second groove 44 and washes the conical surface 112 to accelerate sludge discharge, the scraping plate 33 is close to the main shaft 32 under the driving of the second linear actuator 36 and the third linear actuator 37, a cylindrical structure is formed by enclosing the scraping plate 33, the main shaft 32 and the scraping plate 33 are driven by the fourth linear actuator 310 to pass through the first annular cylinder 162 and move upwards to the upper part of the flocculation tank 11, and at the moment, the main shaft 32 and a connecting assembly on the main shaft 32 can be maintained.

Claims

1. The sewage treatment device comprises a frame and a flocculation tank assembled on the frame, wherein the inner peripheral surface of the upper end of the flocculation tank is an annular surface, the inner peripheral surface of the lower end of the flocculation tank is a conical surface, and the diameter of the conical surface gradually decreases from top to bottom;

2. The sewage treatment device according to claim 1, wherein a fixing cylinder is arranged on the main shaft, a first groove with an upward opening is formed between the inner wall of the fixing cylinder and the outer wall of the main shaft, a second groove with a downward opening is formed in the scraping plate, the first groove is positioned above the second groove, and a connecting pipe is arranged between the fixing cylinder and the scraping plate and used for communicating the first groove and the second groove.

3. A sewage treatment apparatus according to claim 2, wherein a closure cap is provided on the main shaft, the closure cap being located above the fixed cylinder, the closure cap being circumferentially fixed relative to each other and axially slidably mounted on the main shaft, the closure cap being provided with a feed tube, the closure cap closing a top opening of the recess when moved down into contact with the fixed cylinder.

4. A sewage treatment device according to claim 3, wherein the first pulley and the second pulley are mounted on the fixed cylinder, the first pulley and the second pulley are provided with ring grooves for mounting the connecting pipes, the axes around which the first pulley and the second pulley rotate are parallel and horizontally extend, the first pulley is positioned below the second pulley, the connecting pipes are respectively mounted on the first pulley and the second pulley, an elastic piece I is arranged between the first pulley and the fixed cylinder, the elastic piece I has elastic potential energy for driving the first pulley to move downwards, an elastic piece II is arranged between the second pulley and the fixed cylinder, and the elastic piece II has elastic potential energy for driving the second pulley to move upwards.

5. The sewage treatment apparatus according to claim 4, wherein a first moving seat and a second moving seat are provided on the main shaft, a first rotating plate is rotatably provided between the first moving seat and the scraper, a second rotating plate is rotatably provided between the second moving seat and the scraper, the first moving seat and the second moving seat are slidably provided on the main shaft up and down, the axes around which both ends of the first rotating plate and the second rotating plate mounted on the same scraper rotate are horizontally arranged and parallel to each other, the first moving seat and the second moving seat are close to each other or far away from each other, and the rotating plate is driven to rotate in opposite directions simultaneously so that the scraper approaches or gets away from the main shaft.

6. The sewage treatment apparatus according to claim 5, wherein the first guide rod is fixedly mounted on the scraper, and the first guide rod is slidably mounted on the main shaft in the same direction as the direction of movement of the scraper.

7. The sewage treatment apparatus as claimed in claim 6, wherein the first guide rod is externally fitted with the first guide tube, the first guide rod is slidably fitted on the first guide tube in the direction of movement of the scraper, and the first guide tube is slidably fitted on the main shaft in the direction of movement of the scraper.

8. The wastewater treatment device of claim 7, wherein the bottom surface of the scraper is parallel to the conical surface.

9. The sewage treatment device according to claim 8, wherein a fixing plate and a second annular cylinder are arranged in the flocculation tank, the second annular cylinder is assembled on the fixing plate, the top end of the second annular cylinder is positioned above the fixing plate, a third groove with an upward opening is formed between the second annular cylinder, the fixing plate and the flocculation tank, the third groove is used for containing sewage to be treated, and when the sewage is higher than the top surface of the second annular cylinder, the sewage flows into the flocculation tank along an inner hole of the second annular cylinder.

10. A sewage treatment apparatus according to claim 9, wherein the second annular cylinder is slidably mounted on the fixed plate up and down to change the height of the sewage in the third recess when the sewage flows into the flocculation tank.