CN114671480B

CN114671480B - Municipal wastewater treatment equipment and method thereof

Info

Publication number: CN114671480B
Application number: CN202210303217.4A
Authority: CN
Inventors: 李傲驰
Original assignee: Zhejiang Hengwei Construction Group Co ltd
Current assignee: Zhejiang Hengwei Construction Group Co ltd
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2023-05-02
Anticipated expiration: 2042-03-25
Also published as: CN114671480A

Abstract

The application relates to municipal sewage treatment equipment and a method thereof, relates to the technical field of sewage treatment, and aims to solve the problem that the sewage treatment equipment has poor scum scraping effect on the surface of sewage and lower working performance. The sewage treatment device comprises a sewage tank, a plurality of rotating impellers are arranged inside the sewage tank, a slag scraping assembly for scraping floating foam on the surface of sewage is arranged above the sewage tank, the slag scraping assembly comprises a transverse moving part, a lifting part arranged below the transverse moving part and a slag scraping part arranged below the lifting part, slag discharging ports are formed in two side walls of the sewage tank, the slag scraping part comprises two vertically arranged slag scraping plates, one side edge of each slag scraping plate, deviating from the lifting part, is provided with a slag limiting plate, each slag limiting plate bends towards the corresponding slag discharging port direction, and a rotating assembly is arranged at the joint of each slag limiting plate and each slag scraping plate. This application has the effect that improves the efficiency of scraping the dross to sewage surface, improves sewage treatment plant work efficiency.

Description

Municipal wastewater treatment equipment and method thereof

Technical Field

The application relates to the technical field of sewage treatment, in particular to municipal sewage treatment equipment and a municipal sewage treatment method.

Background

With the development of society and industry, the urban living standard is gradually improved, a large amount of sewage is inevitably generated in daily operation of the city, and the random discharge of the sewage can cause immeasurable influence on the environment, so that the sewage is indispensable for treatment before discharge.

In the related art, design has a sewage treatment device, including the sewage case, inlet tube and outlet pipe, the sewage case diapire rotates and is connected with a plurality of impeller that rotate, inlet tube and outlet pipe all are linked together with the sewage case, the sewage case outside is provided with a plurality of air ducts that are used for adding compressed air towards the inside of sewage case, air duct one end inserts and establishes the inside and lie in corresponding impeller top that rotates of sewage case, the sewage case top is provided with the sediment subassembly of scraping that is used for striking off the dross on sewage surface, the sediment subassembly of scraping includes but horizontal migration's sideslip piece, set up in the sideslip piece but the lifting means of vertical direction removal towards sewage case one side and set up in the scraping plate that the lifting means deviates from sideslip piece one end. When sewage equipment starts, air duct is with compressed air input to corresponding impeller top that rotates, through the rotation of impeller, splits compressed air to with suspended particles in the sewage drive to the liquid level surface, scrape the foam of sediment subassembly with the surface and scrape, thereby play certain treatment effect to sewage.

Aiming at the related patent, the inventor finds that when the slag scraping plate scrapes the floating foam on the surface of the sewage, the floating foam scraped by the slag scraping plate can be washed back into the sewage by the fluctuated water flow again in the moving process of the slag scraping plate due to certain mobility of the sewage in the moving process of the slag scraping plate, and the floating foam lacks certain limitation while continuing to move, so that the slag scraping efficiency is lower, and the sewage treatment effect of the application is lower.

Disclosure of Invention

In order to improve the slag scraping efficiency of floating foam on the surface of sewage and improve the capacity of sewage treatment equipment for sewage treatment, the application provides municipal sewage treatment equipment and a method thereof.

The application provides a municipal wastewater treatment equipment and method adopts following technical scheme:

the utility model provides a municipal wastewater treatment equipment, includes the sewage case, the inside rotation impeller that is used for carrying out the come-up with the suspended impurity in the sewage that is provided with of sewage case, the sewage case top is provided with the sediment subassembly of scraping that is used for scraping the superficial foam of sewage, the sediment subassembly is scraped including sideslip piece, setting up in the lifting part of sideslip piece below and setting up in the sediment piece of scraping of lifting part below, the sediment mouth that can supply the sediment piece to scrape the dross out of the sewage case has all been seted up to the sewage case both sides wall, the sediment piece includes the sediment board of two vertical settings, two the length direction of sediment board all is unanimous with the width direction of sewage case, two the sediment side that the sediment board deviates from the lifting part all is provided with the dross limiting plate, dross limiting plate both ends opening part all is provided with the baffle, the baffle rotates to be connected in the limiting plate lateral wall, the one end that the baffle is close to the limiting plate edge is provided with rotates the axle sleeve, be provided with the axis of rotation, axis of rotation one end insert and establish and the corresponding torsion spring coupling is used for the dross torsion spring coupling in the rotation arm, the dross is connected with another torsion spring coupling is connected with the dross board.

By adopting the technical scheme, when the scum scraping component scrapes the scum on the sewage surface in the sewage tank, the scum limiting plate is rotated by the rotating component, so that the bending edge of the scum limiting plate stretches into the lower part of the sewage surface, the contact area between the scum limiting plate and the water surface is minimized as much as possible when the scum limiting plate enters the water surface, and the problem of re-pressing the scum back into the water can be effectively solved; the lower surface of the scum limiting plate is rotated to an angle which is flush with the liquid level through the rotation of the rotating assembly, the scum limiting plate continuously collects scum on the sewage surface inside the sewage tank under the action of the movement of the transverse moving part and the lifting part, and the problem that the scum of the traditional flat scum scraping plate is easy to reflow back into the sewage can be effectively solved through the bent shape; when the scum limiting plate moves to the slag discharging port, the scum baffle is abutted against the upper end wall of the slag discharging port, so that the two ends of the scum limiting plate are opened through the rotating shaft, the bent part of the scum limiting plate leaves the interior of the sewage tank through the slag discharging port, and scum collected in the scum limiting plate is discharged, so that the scum cleaning efficiency of the scum scraping assembly on the sewage surface is improved, and the scum on the sewage surface can be discharged more quickly; in addition, when sideslip subassembly carries out the round trip movement in the sewage case top, the dross limiting plate that two directions are different can reciprocate and discharge the dross on sewage case surface from two directions, has further improved the efficiency to the dross clearance, and work efficiency and economic benefits are higher.

Preferably, the rotating assembly comprises a rotating shaft sleeve, a rotating rod, two clamping rings and a driving piece, the rotating shaft sleeve is arranged on one side of the slag scraping plate, which is away from the lifting piece, the length direction of the rotating shaft sleeve is consistent with the length direction of the slag scraping plate, the rotating rod penetrates through the rotating shaft sleeve, the two clamping rings are respectively sleeved on the two ends of the rotating shaft sleeve, which extend out of the rotating shaft sleeve, the two clamping rings are connected with the slag limiting plate, the driving piece is arranged on one side of the slag scraping plate, and the driving piece is connected with one end of the rotating rod and drives the rotating rod to rotate.

Through adopting above-mentioned technical scheme, after starting the driving piece, the output shaft of driving piece drives and rotates the dwang, because the rotation axle sleeve rotates the spacing effect of dwang, it rotates together with dross limiting plate to rotate the dwang and drive joint ring to can make certain control to the rotation of dross limiting plate, this rotation subassembly simple structure, easily control, thereby can great degree improve the cleaning speed of this application's sediment subassembly of scraping to the inside surface dross of sewage case, degree of automation is higher, the practicality and the convenience of this application have been improved, economic benefits and work efficiency are showing and are improving.

Preferably, the clamping ring comprises two semicircular locking rings, the end parts of the rotating rod are inserted between the corresponding two locking rings, one side, close to the scum limiting plate, of the locking rings is provided with a connecting plate, a plurality of fasteners are arranged on the connecting plate, and the fasteners penetrate through the connecting plate and are in threaded connection with the scum limiting plate.

Through adopting above-mentioned technical scheme, divide into two semicircular locking rings with the joint ring, can make the joint ring and rotate the mode of dismantling the connection between the dwang to simplified installation and maintenance process to rotating the subassembly, and simple structure, easily realized has improved practicality and the convenient degree of this application, has higher economic benefits.

Preferably, the driving piece is sleeved with a waterproof shell for improving the waterproof performance of the driving piece, the driving piece is arranged in the waterproof shell, a plurality of locking pieces are arranged on the waterproof shell, and the locking pieces penetrate through the waterproof shell and are in threaded connection with the side wall of the scum plate.

Through adopting above-mentioned technical scheme, set up waterproof shell and carry out the protection of certain degree to the driving piece, the driving piece sets up in the sewage incasement portion, in the rotation impeller pivoted of sewage case diapire, can make the inside sewage of sewage case in a comparatively active state, the sewage splashes and permeates in the driving piece, just can cause the damage of driving piece, thereby influence the operation process of scraping sediment subassembly and rotating assembly, certain potential safety hazard has, through setting up waterproof shell, carry out the driving piece and keep apart, the security and the economic benefits of this application have been improved, the work efficiency of this application has further been improved.

Preferably, a buffer plate for improving abrasion between the two scum limiting plates is arranged between the two scum limiting plates, the buffer plate is positioned between the two scum limiting plates, the buffer plate faces the two side faces of the two sides of the corresponding scum limiting plates, and the setting directions of the two scum limiting plates are consistent with the rotating directions of the corresponding scum limiting plates.

Through adopting above-mentioned technical scheme, set up the buffer board and can effectively improve corresponding dross limiting plate and excessively rotate because of rotating assembly's failure to cause the problem that two dross limiting plates bump, reduced the probability that the potential safety hazard takes place effectively, offer corresponding guide face of stepping down simultaneously at the surface of buffer board, can further provide certain buffer space for the dross limiting plate, improved the security and the economic benefits of this application in the time of saving material.

Preferably, the guide surface is provided with a buffer pad for protecting the scum limiting plate.

Through adopting above-mentioned technical scheme, the material of blotter is the rubber material, sets up the blotter and can carry out certain buffering to the surperficial of the excessive dross limiting plate of rotation to the structural integrity of protection dross limiting plate has higher security and economic benefits.

Preferably, the outer side walls at two ends of the sewage tank are respectively provided with a cleaning component for cleaning the surfaces of the scum limiting plates.

Through adopting above-mentioned technical scheme, set up the clearance subassembly and can clear up the internal surface and the surface of dross limiting plate to effectively improve dross and adhere to internal surface or the surface of dross limiting plate, and follow the inside problem of sideslip piece reentrant sewage case, further improved this application to the inside dross processing of sewage case efficiency, work efficiency and economic benefits can be improved.

Preferably, the cleaning assembly comprises two fixing plates, two movable screw rods, two movable lantern rings, two cleaning cottons and two driving motors, wherein the two fixing plates are respectively arranged on two sides of a slag discharging port, the two movable screw rods are rotationally connected between the fixing plates on two sides, the slag discharging port is positioned between the two movable screw rods, the two movable lantern rings are respectively sleeved on the corresponding movable screw rods and are in threaded connection with the movable screw rods, the two cleaning cottons are respectively connected to one side of the corresponding movable lantern rings, which faces the scum limiting plates, the two cleaning cottons are respectively attached to the corresponding surfaces of the scum limiting plates, the two driving motors are respectively arranged on the side wall of one fixing plate, which is away from the other fixing plate, and the output shafts of the driving motors are respectively connected with the corresponding movable screw rods.

Through adopting above-mentioned technical scheme, after two driving motor start, driving motor's output shaft drives corresponding removal lead screw and rotates to through the threaded connection who removes the lead screw and remove the lantern ring, drive corresponding clearance cotton and clear up the internal surface and the surface of dross limiting plate, the shape of two clearance cottons and the internal surface and the shape looks mutual adaptation of surface of dross limiting plate, thereby can clear up the internal surface and the surface of dross limiting plate better, further improved this application to the cleaning efficiency of the inside dross of sewage case, economic benefits and work efficiency are showing and are improving.

Preferably, a water-stop cover for improving sewage splashing is arranged above the sewage tank, and a movable through groove for the slag scraping assembly to transversely move is formed in the surface of the water-stop cover, which is away from the sewage tank.

Through adopting above-mentioned technical scheme, set up waterproof shell can effectively improve the inside sewage spill of sewage case to pollute operational environment's problem, can effectually protect staff's healthy, the security is higher.

Preferably, the compressed air enters the sewage tank through the air inlet end and flows to the upper part of the corresponding rotating impeller, and the compressed air is dispersed and floats towards the water surface under the rotation of the rotating impeller;

in the process of rising of the air, the air bubbles formed by the air can enable the buoyancy of tiny impurities in the sewage to be larger than the gravity and the floating resistance, so that the impurities in the sewage are driven to the surface of the sewage;

the scum scraping assembly is started, the scum scraping assembly rotates the scum limiting plate in the direction of the scum limiting plate in the moving process, scum on the surface of sewage in the sewage tank is collected through the bending scum limiting plate, and the scum is discharged out of the inside of the sewage tank through a slag discharging port in a concentrated manner.

Through adopting above-mentioned technical scheme, effectively collect the dross on sewage surface in the sewage case to improved this application and to sewage treatment's efficiency, economic benefits and practicality are showing and are improving.

In summary, the present application includes at least one of the following beneficial technical effects:

1. compared with the traditional slag cleaning plate in a straight state, the slag cleaning plate has higher slag cleaning efficiency on the surface of the sewage, so that the effect and the treatment rate of the sewage treatment are improved, and the economic benefit and the working efficiency are remarkably improved;

2. the dross limiting plate cooperation rotating assembly of buckling, the dross limiting plate can be through rotating assembly's rotation to carry out more high-efficient collection with the dross on sewage surface with the mode of dragging for, thereby further improved the work efficiency and the practicality of this application.

Drawings

Fig. 1 is a schematic structural view of a municipal sewage treatment apparatus according to an embodiment of the application.

Fig. 2 is a cross-sectional view of A-A in fig. 1.

Fig. 3 is a schematic structural view of a slag scraping member according to an embodiment of the present application.

Fig. 4 is an exploded view of the dross confinement plate and the dross baffle according to the embodiments of the application.

Fig. 5 is a partial enlarged view at B in fig. 4.

Fig. 6 is a partial enlarged view at C in fig. 3.

Fig. 7 is a partial enlarged view at D in fig. 2.

Reference numerals illustrate: 1. a sewage tank; 11. a slag discharge port; 2. rotating the impeller; 3. a slag scraping assembly; 31. a traversing member; 32. a lifting member; 33. a slag scraping piece; 331. a slag scraping plate; 4. a scum limiting plate; 41. a scum baffle; 411. rotating the shaft sleeve; 42. a rotating shaft; 43. a torsion spring; 5. a rotating assembly; 51. rotating the shaft sleeve; 52. rotating the rotary rod; 53. a clamping ring; 531. a locking ring; 532. a connecting plate; 533. a fastener; 54. a driving member; 6. a waterproof case; 61. a locking member; 7. a buffer plate; 71. a yielding guide surface; 72. a cushion pad; 8. cleaning the assembly; 81. a fixing plate; 82. moving the screw rod; 83. moving the collar; 84. cleaning cotton; 85. a drive motor; 9. a water-stop cover; 91. and moving the through groove.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-7.

The embodiment of the application discloses municipal wastewater treatment equipment. Referring to fig. 1 and 2, a municipal sewage treatment apparatus includes a sewage tank 1, the sewage tank 1 being connected with a water inlet pipe for discharging sewage and a water outlet pipe for discharging sewage. The sewage tank 1 is internally provided with a plurality of rotating impellers 2 for stirring sewage, and the sewage tank 1 is also communicated with a plurality of air inlet pipes for guiding compressed air to the corresponding rotating impellers 2. In the present embodiment, 2 rotating impellers 2 are provided.

Referring to fig. 1, a water-stop cover 9 for improving the splashing of sewage inside the sewage tank 1 is provided above the sewage tank 1, and the water-stop cover 9 is connected to the sewage tank 1 by welding.

Referring to fig. 2, a slag scraping assembly 3 for scraping dross on the surface of sewage is disposed above the sewage tank 1, and the slag scraping assembly 3 includes a traverse member 31 movable along the length direction of the sewage tank 1, a lifting member 32 disposed on a side of the traverse member 31 facing the interior of the sewage tank 1, and a slag scraping member 33 disposed on a side of the lifting member 32 facing away from the traverse member 31. The upper surface of the waterproof cover 9 is provided with a through groove 91 corresponding to the traversing element 31 for the traversing element 31 to move and move. Slag discharging openings 11 for the slag scraping assembly 3 to discharge the scum out of the sewage tank 1 are formed in the side walls of the two ends of the sewage tank 1, and the slag discharging openings 11 are located above the water inlet pipe and the water outlet pipe. In the present embodiment, the traverse member 31 and the elevating member 32 each employ an air cylinder as the moving means.

Referring to fig. 2 and 3, the slag scraping member 33 includes two vertically disposed slag scraping plates 331, the length direction of the slag scraping plates 331 is identical to the width direction of the sewage tank 1, and both the slag scraping plates 331 are connected to a side of the lifting member 32 facing away from the traverse member 31 by welding. The two scum limiting plates 4 used for improving the collection efficiency of the sewage surface are arranged on one sides of the two scum scraping plates 331, which are away from the lifting piece 32, the two scum limiting plates 4 are bent, and the bending directions are bent towards the directions of the scum discharging ports 11 in the corresponding directions. Can collect the dross on sewage surface more high-efficiently through the dross limiting plate 4 of buckling, and effectively improve the difficult problem of scraping of dross to work efficiency and economic benefits of this application can be improved.

Referring to fig. 4 and 5, the end walls at two ends of the dross limiting plate 4 are respectively provided with a dross baffle 41 for improving the outflow of dross through two ends of the dross limiting plate 4, one end of the dross baffle 41, which is close to the bent side edge of the dross limiting plate 4, is integrally formed with a rotating shaft sleeve 411, a rotating shaft 42 is connected inside the rotating shaft sleeve 411 through welding, one end of the rotating shaft 42, which extends out of the driving shaft sleeve 411, is inserted into the side wall of the dross limiting plate 4 and is rotationally connected with the dross limiting plate 4, a torsion spring 43 for facilitating the resetting of the dross baffle 41 is sleeved on the rotating shaft 42, one torsion arm of the torsion spring 43 is fixedly connected with the dross limiting plate 4 through gluing, and the torsion arm of the other end is fixedly connected with the dross baffle 41 through gluing.

Referring to fig. 3 and 6, a rotating assembly 5 for changing the opening angle of the dross limiting plate 4 is provided between the two dross plates 331 and the corresponding dross limiting plate 4. The rotating assembly 5 comprises a rotating shaft sleeve 51, a rotating rod 52, two clamping rings 53 and a driving piece 54. The rotating sleeve 51 is connected to a side wall of the scum limiting plate 4 facing the scum scraping plate 331 by welding, and the length direction of the rotating sleeve 51 is consistent with the length direction of the scum scraping plate 331. The rotary lever 52 is inserted into the rotary shaft sleeve 51 and is rotatably connected to the rotary shaft sleeve 51.

Referring to fig. 3 and 6, the clamping ring 53 includes two semicircular locking rings 531, the two locking rings 531 are spliced with each other, two ends of the rotating rotary rod 52 extending out of the rotating shaft sleeve 51 are inserted between the two locking rings 531, the two locking rings 531 are connected by bolts, and the size of an opening hole in the middle of the two locking rings 531 is matched with the diameter of the rotating rotary rod 52. Two locking rings 531 towards equal integrated into one piece in one side of dross limiting plate 4 have connecting plate 532, are provided with a plurality of fasteners 533 on the connecting plate 532, and a plurality of fasteners 533 pass connecting plate 532 and with dross limiting plate 4 threaded connection to make and form the detachable connection between dross limiting plate 4 and the rotating assembly 5, improved the convenient degree and the economic benefits of this application installation. In this embodiment, the fastener 533 is a fastening bolt.

Referring to fig. 6, the driving member 54 is disposed on a side wall of the scum plate 331 by a bolt, a waterproof case 6 for isolating the driving member 54 from contact with sewage is sleeved outside the driving member 54, a plurality of locking members 61 are disposed on the surface of the waterproof case 6, and the locking members 61 penetrate through the waterproof case 6 and are in threaded connection with the scum plate 331. In this embodiment, the locking member 61 is a locking bolt; the driving member 54 includes a driving gear, a driven gear and a driving motor, the driving motor is connected to the sidewall of the slag scraping plate 331 through a bolt, the driving gear is sleeved on an output shaft of the driving motor, the driven gear is meshed with the driving gear, the driven gear is sleeved on one end of the rotating rotary rod 52, and the rotating rotary rod 52 is driven to rotate through the meshing between the driving gear and the driven gear.

Referring to fig. 3 and 6, a buffer plate 7 for improving abrasion between the two dross limiting plates 4 is disposed between the two dross plates 331, the length direction of the buffer plate 7 is identical to the length direction of the dross plates 331, and both side surfaces of the buffer plate 7 are respectively connected to the side walls of the corresponding dross plates 331 by welding. The buffer plate 7 extends out of the surfaces of the two scum limiting plates 331 to form a yielding guide surface 71 which can buffer the scum limiting plates 4 which excessively rotate, and the yielding guide surface 71 is formed in a direction consistent with the rotation direction of the corresponding scum limiting plates 4 deviating from the scum discharging port 11. In this embodiment, each of the yielding guide surfaces 71 is connected with a cushion pad 72 for buffering the dross limiting plate 4 by glue, and the cushion pad 72 is made of rubber.

Referring to fig. 2 and 7, both side walls of the sewage tank 1 are provided with cleaning members 8 for cleaning the inner and outer surfaces of the dross limiting plates 4. The cleaning assembly 8 comprises two fixing plates 81, two movable screw rods 82, two movable lantern rings 83, two cleaning cottons 84 and two driving motors 85, wherein the two fixing plates 81 are connected to the end wall of the sewage tank 1 through welding, and the two fixing plates 81 are respectively positioned at two ends of the slag discharging opening 11 on the corresponding side wall in the length direction; the two moving screw rods 82 are rotatably connected between the two fixed plates 81, and the two moving screw rods 82 are respectively positioned at two sides of the slag discharging opening 11 on the corresponding side wall in the width direction. In this embodiment, a bearing for improving wear between the fixed plate 81 and the moving screw 82 is disposed at a joint of the fixed plate 81 and the moving screw 82, and an outer ring of the bearing is fixedly connected with the fixed plate 81 by welding, and an inner ring is in interference fit with an end portion of the moving screw 82.

Referring to fig. 2 and 7, two moving collars 83 are respectively sleeved on the corresponding moving screw 82 and are in threaded connection with the moving screw 82; two cleaning cottons 84 are respectively connected to one surface of the movable lantern ring 83 facing the scum limiting plate 4 through glue, and the shapes of the two cleaning cottons 84 are respectively matched with the inner surface and the outer surface of the scum limiting plate 4. The two driving motors 85 are connected to the outer side wall of the one-side fixing plate 81 through bolts, and the output shafts of the two driving motors 85 are connected with the end walls of the corresponding movable screw rods 82. Through setting up clearance subassembly 8 and clearing up the internal surface and the surface of dross limiting plate 4, can effectively improve the dross that is attached to dross limiting plate 4 internal surface or surface and follow sideslip piece 31 and reenter sewage case 1 and enter into in the sewage, reduce the problem of dross cleaning efficiency, further improved this application to the cleaning efficiency of dross, work efficiency and economic benefits of this application can show the improvement.

The implementation principle of municipal wastewater treatment equipment of the embodiment of the application is as follows: the rotary impeller 2 in the sewage tank 1 decomposes the compressed air, and the decomposed air carries out 1 air floatation on the scum in the sewage, so that the scum in the sewage is more accumulated on the surface of the sewage.

When scraping the dross on the sewage surface, the lifting part 32 descends to the sewage surface with the slag scraping part 33, and the rotating assembly 5 is matched with the lifting part 32, so that the dross limiting plate 4 rotates to a certain extent, the dross limiting plate 4 can enter the lower part of the sewage surface with a smaller contact area, and the dross limiting plate 4 is matched with the movement of the traversing part 31 through the further rotation of the rotating assembly 5, so that the bending dross limiting plate 4 can collect the dross on the sewage surface better and discharge the dross through the slag discharging port 11, and the dross cleaning efficiency and the working efficiency of the sewage surface are improved.

When the dross limiting plate 4 moves to the slag discharging opening 11, the dross baffle 41 touches the side edge of the slag discharging opening 11, so that the dross baffle 41 is rotated, the torsion spring 43 is made to accumulate elasticity by the rotation, and when the dross limiting plate 4 leaves the slag discharging opening 11, the dross baffle 41 rotates to close the openings at the two ends of the dross limiting plate 4 again.

After the dross limiting plate 4 discharges the dross through the slag discharge port 11, the inner surface and the outer surface of the dross limiting plate 4 can be cleaned through the cleaning assembly 8, so that the problem that the dross attached to the surface of the dross limiting plate 4 enters the sewage tank 1 again after following the movement of the transverse moving piece 31, and the dross cleaning efficiency is reduced is solved, and the working efficiency of the application is further improved.

This application's a municipal wastewater treatment equipment compares traditional straight type scum board of scraping, can collect sewage surface's dross more effectively, improves cleaning efficiency and work efficiency to sewage surface dross.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. The utility model provides a municipal wastewater treatment equipment, includes sewage case (1), inside a plurality of rotation impeller (2) that are used for carrying out the come-up with suspended impurity in the sewage that are provided with of sewage case (1), sewage case (1) top is provided with scrapes sediment subassembly (3) that are used for scraping sewage surface foam, scrape sediment subassembly (3) including sideslip piece (31), set up in lifting part (32) of sideslip piece (31) below and set up in sediment piece (33) of scraping of lifting part (32) below, sediment mouth (11) that can supply to scrape sediment piece (33) to scrape the dross out sewage case (1) have all been seted up to sewage case (1) both sides wall, its characterized in that: the slag scraping piece (33) comprises two vertically arranged slag scraping plates (331), the length directions of the slag scraping plates (331) are consistent with the width directions of the sewage tank (1), the slag scraping plates (331) are respectively provided with a slag limiting plate (4) on one side edge, which is away from the lifting piece (32), of the slag scraping plates (331), the slag limiting plates (4) are respectively bent towards the corresponding slag discharging opening (11), slag baffle plates (41) are respectively arranged at openings at two ends of the slag limiting plates (4), the slag baffle plates (41) are rotatably connected to the side walls of the slag limiting plates (4), one ends, close to the bending edges of the slag limiting plates (4), of the slag baffle plates (41) are provided with rotating shaft sleeves (411), rotating shafts (42) are arranged in the rotating shaft sleeves (411), one ends of the rotating shafts (42) are inserted into the side walls of the slag limiting plates (4) and are rotatably connected with the slag limiting plates (4), torsion springs (43) are sleeved on the rotating shafts (42), one ends of the torsion springs (43) are connected with the corresponding slag baffle plates (41), and the other torsion springs (43) are rotatably connected with the slag limiting plates (4) and are rotatably connected with the slag limiting plates (4) respectively, and the slag limiting assemblies (4) are rotatably connected with the slag limiting plates (4) and are rotatably connected with the corresponding slag limiting plates (5).

The rotating assembly (5) comprises a rotating shaft sleeve (51), a rotating rod (52), two clamping rings (53) and a driving piece (54), wherein the rotating shaft sleeve (51) is arranged on one side of a slag scraping plate (331) deviating from a lifting piece (32), the length direction of the rotating shaft sleeve (51) is consistent with that of the slag scraping plate (331), the rotating rod (52) penetrates through the rotating shaft sleeve (51), the two clamping rings (53) are respectively sleeved at two ends, extending out of the rotating shaft sleeve (51), of the rotating rod (52), the two clamping rings (53) are connected with a slag limiting plate (4), the driving piece (54) is arranged on one side of the slag scraping plate (331), and the driving piece (54) is connected with one end of the rotating rod (52) and drives the rotating rod (52) to rotate;

the clamping ring (53) comprises two semicircular locking rings (531), the end parts of the rotary rotating rods (52) are inserted between the corresponding two locking rings (531), one sides of the two locking rings (531) close to the scum limiting plates (4) are provided with connecting plates (532), the connecting plates (532) are provided with a plurality of fasteners (533), and the fasteners (533) penetrate through the connecting plates (532) and are in threaded connection with the scum limiting plates (4).

2. A municipal sewage treatment plant according to claim 1, wherein: the waterproof shell (6) for improving the waterproof performance of the driving piece (54) is sleeved on the driving piece (54), the driving piece (54) is arranged in the waterproof shell (6), a plurality of locking pieces (61) are arranged on the waterproof shell (6), and the locking pieces (61) penetrate through the waterproof shell (6) and are in threaded connection with the side wall of the slag scraping plate (331).

3. A municipal sewage treatment plant according to claim 2, wherein: be provided with two between scum limiting plate (331) buffer plate (7) that are used for improving wearing and tearing between two dross limiting plates (4), buffer plate (7) are located between two dross limiting plates (4), buffer plate (7) are facing to the both sides side of corresponding dross limiting plate (4) and have all been offered and have been put away guide surface (71), two the direction of seting up of guide surface (71) of putting away is unanimous with the pivoted direction of corresponding dross limiting plate (4).

4. A municipal sewage treatment plant according to claim 3, wherein: and a buffer pad (72) for protecting the scum limiting plate (4) is arranged on the yielding guide surface (71).

5. A municipal sewage treatment plant according to claim 1, wherein: the outer side walls of the two ends of the sewage tank (1) are respectively provided with a cleaning component (8) for cleaning the surfaces of the scum limiting plates (4).

6. The municipal sewage treatment apparatus according to claim 5, wherein: the cleaning assembly (8) comprises two fixing plates (81), two movable screw rods (82), two movable lantern rings (83), two cleaning cottons (84) and two driving motors (85), wherein the two fixing plates (81) are respectively arranged on two sides of a slag discharging port (11), the two movable screw rods (82) are rotationally connected between the fixing plates (81) on two sides, the slag discharging port (11) is located between the two movable screw rods (82), the two movable lantern rings (83) are respectively sleeved on the corresponding movable screw rods (82) and are in threaded connection with the movable screw rods (82), the two cleaning cottons (84) are respectively connected to one side of the corresponding movable lantern rings (83) facing the scum limiting plate (4), the two cleaning cottons (84) are respectively attached to the corresponding surfaces of the scum limiting plate (4), the driving motors (85) are respectively arranged on the side wall of one fixing plate (81) deviating from the other fixing plate (81), and the output shafts of the driving motors (85) are respectively connected with the corresponding movable screw rods (82).

7. A municipal sewage treatment plant according to claim 1, wherein: the sewage tank is characterized in that a water-stop cover (9) for improving sewage splashing is arranged above the sewage tank (1), and a movable through groove (91) for the slag scraping assembly (3) to transversely move is formed in the surface of the water-stop cover (9) deviating from the sewage tank (1).

8. A sewage treatment method applied to the sewage treatment apparatus of claim 4, characterized in that: compressed air enters the sewage tank (1) through the air inlet end and flows over the corresponding rotating impeller (2), and the compressed air is dispersed and floats towards the water surface under the rotation of the rotating impeller (2);

the slag scraping assembly (3) is started, the slag scraping assembly (3) rotates the position of the slag limiting plate (4) through the rotating assembly (5) in the moving process, and the slag on the surface of the sewage in the sewage tank (1) is collected through the bending-shaped slag limiting plate (4) and is discharged out of the inside of the sewage tank (1) through the slag discharging port (11) in a concentrated mode.