CN112824339A

CN112824339A - Sludge filtering and purifying device

Info

Publication number: CN112824339A
Application number: CN201911143551.2A
Authority: CN
Inventors: 张小武; 张寅清; 李尧; 唐景春
Original assignee: Xinyi Xinnan Environmental Protection Industry Technology Research Institute Co Ltd
Current assignee: Xinyi Xinnan Environmental Protection Industry Technology Research Institute Co Ltd
Priority date: 2019-11-20
Filing date: 2019-11-20
Publication date: 2021-05-21

Abstract

The invention relates to the technical field of filtering and purifying devices, in particular to a sludge filtering and purifying device which comprises a filtering chamber and a purifying chamber, wherein a sludge conveying pipe is arranged at the top end of the filtering chamber of a centrifugal filtering cylinder, a secondary hydraulic cylinder is arranged on the left side of the filtering chamber of the centrifugal filtering cylinder, a filtering plate is arranged at the bottom of the filtering chamber of the centrifugal filtering cylinder, a centrifugal chamber is arranged at the bottom end of the filtering plate of the centrifugal filtering cylinder, a motor is arranged at the bottom of the centrifugal chamber of the centrifugal filtering cylinder, a centrifugal filtering cylinder is arranged on the surface of a rotating shaft of the centrifugal filtering cylinder, a fixing piece is arranged inside the centrifugal filtering cylinder of the centrifugal filtering cylinder, an activated carbon layer is arranged inside a purifying chamber with a water outlet of the centrifugal chamber at the bottom of the centrifugal chamber of the. The invention filters and purifies the sewage fully by the filtration of the purifying chamber, thereby obtaining the separated silt and water.

Description

Sludge filtering and purifying device

Technical Field

Technical field

The invention relates to the technical field of filtering and purifying devices, in particular to a sludge filtering and purifying device.

Background

The sludge is a necessary product in modern production and life, and after the sludge which is not effectively treated enters the environment, secondary pollution is directly brought to water and the atmosphere, and the sludge also poses serious threats to the ecological environment and human activities. Landfill, composting and incineration are common methods for sludge treatment, but the high water content of sludge limits the application of these treatment methods. Therefore, the key point of the sludge treatment at the present stage is to effectively reduce the water content of the sludge so as to be beneficial to the subsequent treatment. The existing sludge dewatering methods mainly comprise a natural drying method and a mechanical dewatering method. The natural drying method mainly adopts a sludge drying bed which comprises a flat ground surrounded and separated by a soil embankment, and thin layers of broken stones and sands are paved on the flat ground. The water content of the sludge is reduced by infiltration and evaporation to reduce the water content of the sludge flowing to the sludge drying bed. And the infiltration process is finished about 2 to 3 days, so that the water content is reduced to about 85 percent. After that, the evaporation is mainly relied on, and the concentration can be reduced to about 65% after a plurality of weeks. However, dry dewatering is not economical and also environmentally unfriendly and in most cases not desirable. Mechanical dewatering methods include filtration and centrifugation. The equipment used in the filtration method comprises a plate-and-frame filter press and a belt filter. The plate-and-frame filter press discharges water in sludge through filter cloth by the extrusion of the plate frame, thereby achieving the purpose of dehydration. The belt filter is characterized in that an upper tensioned filter belt and a lower tensioned filter belt carry a sludge layer, the sludge layer passes through a series of regularly arranged rolling cylinders in an S shape, pressing and shearing force on the sludge layer is formed by the tension of the filter belts, the belt filter continuously operates to press water in the sludge layer, and therefore sludge dewatering is achieved. The centrifugal method usually adopts a horizontal screw settling centrifugal dehydrator, which consists of an inner screw and an outer rotary drum, wherein one end of the rotary drum is cylindrical, and the other end of the rotary drum is conical. The rotating speed is generally 3000 r/min, the inner spiral and the outer rotary drum have a certain speed difference, the solid-liquid separation is realized by utilizing the density difference of solid-liquid phases and accelerating the settling speed of solid-phase particles under the action of centrifugal force, however, the existing sludge filtering and purifying device still has the problems of poor sludge filtering effect and high sludge content after filtering and purifying, and therefore, the sludge filtering and purifying device is provided.

Disclosure of Invention

The invention aims to provide a sludge filtering and purifying device, which solves the problems that the existing sludge filtering and purifying device proposed in the background technology has poor sludge filtering effect and high sludge content after filtering and purifying.

In order to achieve the purpose, the invention provides the following technical scheme:

a sludge filtering and purifying device comprises a filtering chamber and a purifying chamber, wherein a sludge conveying pipe is arranged at the top end of the filtering chamber, a secondary hydraulic cylinder is arranged at the left side of the filtering chamber, a filtering plate is arranged at the bottom of the filtering chamber, a centrifugal chamber is arranged at the bottom of the filtering plate, a motor is arranged at the bottom of the centrifugal chamber, a rotating shaft is connected at the top of the motor, an output shaft of the motor is in transmission connection with the rotating shaft, a centrifugal filter cylinder is arranged on the surface of the rotating shaft, a fixing part is arranged inside the centrifugal filter cylinder, a centrifugal chamber water outlet is arranged at the bottom of the centrifugal chamber, a silt conveying chamber is arranged at the left side of the centrifugal chamber, an inclined conveying plate is arranged inside the silt conveying chamber, a silt conveying plate is arranged at the bottom of the left side of the silt conveying chamber, the, the right side on active carbon layer installs the micropore ceramic filter core, the nanometer level hyperfiltration membrane is installed on the right side on micropore ceramic filter core, the delivery port has been seted up on the left side on clean room layer.

Preferably, the top end of the sludge conveying pipe is provided with a flow control valve, and the silt conveying pipe is a steel lining polyurethane wear-resistant pipe.

Preferably, the second-stage hydraulic cylinder comprises a first lifting and contracting rod and a second telescopic rod, one end of the first lifting and contracting rod is connected with a first pressing plate, one end of the second telescopic rod is connected with a second pressing plate, and the second pressing plate is provided with a containing hole capable of containing the first lifting and contracting rod to penetrate.

Preferably, one end of the rotating shaft is provided with threads, a through hole is formed in the centrifugal filter cylinder, and internal threads matched with the rotating shaft are formed at the bottom of the fixing piece.

Preferably, the both sides of silt play flitch are provided with the striker plate, silt play flitch with the silt transport chamber uses welded fastening.

Preferably, the filter plate is a micron-sized filter plate, and the centrifugal filter cartridge is a nano-sized filter cartridge.

Preferably, one end of the inclined conveying plate is fixed on the inner wall of the sediment conveying chamber, and the other end of the inclined conveying plate is connected with the sediment discharging plate.

Preferably, the secondary hydraulic cylinder is fixed on the inner wall of the left side of the sediment conveying chamber by welding.

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

1. the invention uses the micron-sized filter plate to filter the sludge for the first time, so that the silt and the sewage are separated primarily, the second pressing plate is used for extruding the first pressing plate through the secondary hydraulic cylinder, so that the water content of the silt is greatly reduced, then the silt is poured into the silt conveying chamber, and finally the silt is conveyed out of the sludge filtering and purifying device through the inclined conveying plate and the silt discharging plate, so that the situation that the filtering device is blocked by the silt, a worker needs to clean the filtering device regularly and replace the filtering device is avoided, the production cost is reduced, the labor intensity of the worker is reduced, and the silt can be recycled.

2. The invention separates the organic matter which is difficult to degrade from ammonia nitrogen in the sewage by the centrifugal separation of the nanometer centrifugal filter cylinder, the filtered sewage enters the purifying chamber through the water outlet of the centrifugal chamber, and the sewage is purified by three layers of filtering and purifying of an active carbon layer, a micropore ceramic filter layer and a nanometer super filter membrane, thereby obtaining the water which accords with the discharge mark.

Drawings

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

FIG. 2 is a schematic view of the structure at position A of the present invention.

In the figure: 1. a sludge filtering and purifying device; 2. a filtering chamber; 3. a centrifugal chamber; 4. a clean room; 5. A silt conveying chamber; 6. a secondary hydraulic cylinder; 7. a first platen; 8. a second platen; 9. a sludge conveying pipe; 10. a flow control valve; 11. a filter plate; 12. a centrifugal filter cartridge; 13. a motor; 14. a water outlet of the centrifugal chamber; 15. an inclined conveying plate; 16. a silt discharging plate; 17. a water outlet; 18. a nano-scale super filtration membrane; 19. a microporous ceramic filter layer; 20. an activated carbon layer; 21. a rotating shaft; 22. a fixing member; 23. a first telescopic rod; 24. and a second telescopic rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "centerline", "longitudinal", "lateral", "length", "width", "thickness", "depth", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be taken as limiting the invention, also in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Example 1

A sludge filtering and purifying device, in order to solve the problems of poor sludge filtering effect and high sludge content after filtering and purifying of the existing sludge filtering and purifying device, as a preferred embodiment, as shown in figure 1 and figure 2, comprises a filtering chamber 2 and a purifying chamber 4, a sludge conveying pipe 9 is arranged at the top end of the filtering chamber 2, a secondary hydraulic cylinder 6 is arranged at the left side of the filtering chamber 2, a filtering plate 11 is arranged at the bottom of the filtering chamber 2, a centrifugal chamber 3 is arranged at the bottom end of the filtering plate 11, a motor 13 is arranged at the bottom of the centrifugal chamber 3, a rotating shaft 21 is connected at the top of the motor 13, an output shaft of the motor 13 is in transmission connection with the rotating shaft 21, a centrifugal filter cylinder 12 is arranged on the surface of the rotating shaft 21, a fixing part 22 is arranged inside the centrifugal filter cylinder 12, a centrifugal chamber water outlet 14 is arranged at the bottom of the centrifugal chamber 3, a silt conveying, sediment discharge plate 16 is installed to the left side bottom of sediment transport chamber 5, and the bottom of centrifugal chamber 3 is provided with clean room 4, and the inside of clean room 4 is equipped with activated carbon layer 20, and micropore ceramic filter layer 19 is installed on activated carbon layer 20's right side, and nanometer level super filter membrane 18 is installed on micropore ceramic filter layer 19's right side, and delivery port 17 has been seted up in clean room 4's left side, can be with the water after the filtration purification from delivery port 17 discharge.

In this example, the flow control valve 10 is installed at the top end of the sludge conveying pipe 9, and the sludge conveying pipe 9 is made of steel-lined polyurethane wear-resistant material, so that the flow rate of the sludge can be controlled, and the sludge conveying pipe 9 can be prevented from being corroded by substances contained in the sludge.

Further, second grade pneumatic cylinder 6 includes first telescopic link 23 and second telescopic link 24, and the one end of first telescopic link 23 is connected with first clamp plate 7, and the one end of second telescopic link 24 is connected with second clamp plate 8, and second clamp plate 8 has seted up the through-hole that holds first telescopic link 23, can be with the filterable more thorough of silt in filter chamber 2.

Specifically, one end of the rotating shaft 21 is provided with a thread, a through hole is formed in the centrifugal filter cartridge 12, and an internal thread matched with the rotating shaft 21 is formed at the bottom of the fixing member 22, so that the centrifugal filter cartridge 12 can be conveniently detached and replaced.

In addition, the both sides of silt play flitch 16 are provided with the striker plate, and silt play flitch 16 and silt transport chamber 5 use welded fastening, make the device more stable.

Further, the filter plate 11 is a micron-sized filter plate, and the centrifugal filter cylinder 12 is a nano-sized filter cylinder, so that sludge can be filtered more sufficiently.

Furthermore, one end of the inclined conveying plate 15 is fixed on the inner wall of the silt conveying chamber 5, and the other end of the inclined conveying plate 15 is connected with the silt discharging plate 16, so that silt is conveniently conveyed out of the sludge filtering and purifying device 1.

Specifically, the secondary hydraulic cylinder 6 is fixed on the inner wall of the left side of the sediment conveying chamber 5 by welding, so that the sludge subjected to filter pressing can be conveniently conveyed into the sediment conveying chamber 5.

When the sludge centrifuge is used, sludge is conveyed from a sludge conveying pipe 9 to enter a filter chamber 2, then a secondary hydraulic cylinder 6 is started to control a first telescopic rod 23 to contract to drive a first pressing plate 7 to extrude the sludge, so that silt and sewage in the sludge are separated, after the sewage enters a centrifugal chamber 3 through a filter plate 11, a second telescopic rod 24 contracts to enable the first pressing plate 7 and a second pressing plate 8 to move into a silt conveying chamber 5 together, then the first telescopic rod 23 extends out to enable the silt to fall onto the surface of an inclined conveying plate 15, then the silt is conveyed out of a sludge filtering and purifying device 1 from a silt discharging plate 16, a motor 13 in the centrifugal chamber 3 starts to control a rotating shaft 21 to rotate, a centrifugal filter cylinder 12 is driven to rotate, the sewage is centrifuged, organic matters and ammonia nitrogen which are difficult to degrade in the sewage are blocked in the centrifugal filter cylinder 12, and the centrifuged sewage enters a purifying chamber 4 through a water, the sewage is filtered and purified by three layers of the activated carbon layer 20, the micropore ceramic filter core layer 19 and the nanometer grade super filter membrane 18, so that the sewage is changed into water which meets the discharge requirement.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A sludge filtering and purifying device comprises a filtering chamber (2) and a purifying chamber (4), and is characterized in that: the top of filter chamber (2) is provided with sludge conveying pipe (9), second grade pneumatic cylinder (6) are installed in the left side of filter chamber (2), filter (11) are installed to the bottom of filter chamber (2), the bottom of filter (11) is provided with centrifugal chamber (3), motor (13) are installed to the bottom of centrifugal chamber (3), the top of motor (13) is connected with pivot (21), the output shaft of motor (13) with pivot (21) transmission is connected, pivot (21) surface is provided with centrifugal filter cylinder (12), the internally mounted of centrifugal filter cylinder (12) has mounting (22), centrifugal chamber delivery port (14) are installed to the bottom of centrifugal chamber (3), the left side of centrifugal chamber (3) is provided with silt conveying chamber (5), the inside of silt conveying chamber (5) is provided with oblique form conveying plate (15), sediment discharge plate (16) is installed to the left side bottom of sediment transport chamber (5), the bottom of centrifugal chamber (3) is provided with clean room (4), the inside of clean room (4) is equipped with activated carbon layer (20), micropore ceramic filter layer (19) are installed on the right side of activated carbon layer (20), nanometer level hyperfiltration membrane (18) is installed on the right side of micropore ceramic filter layer (19), delivery port (17) have been seted up in the left side of clean room (4).

2. The sludge filtering and purifying device as claimed in claim 1, wherein: the top end of the sludge conveying pipe (9) is provided with a flow control valve (10), and the sludge conveying pipe (9) is made of steel lining polyurethane wear-resistant materials.

3. The sludge filtering and purifying device as claimed in claim 1, wherein: the two-stage hydraulic cylinder (6) comprises a first telescopic rod (23) and a second telescopic rod (24), one end of the first telescopic rod (23) is connected with a first pressing plate (7), one end of the second telescopic rod (24) is connected with a second pressing plate (8), and a through hole for accommodating the first telescopic rod (23) is formed in the second pressing plate (8).

4. The sludge filtering and purifying device as claimed in claim 1, wherein: one end of the rotating shaft (21) is provided with threads, a through hole is formed in the centrifugal filter cylinder (12), and internal threads matched with the rotating shaft (21) are formed in the bottom of the fixing piece (22).

5. The sludge filtering and purifying device as claimed in claim 1, wherein: the two sides of the sediment discharge plate (16) are provided with baffle plates, and the sediment discharge plate (16) and the sediment conveying chamber (5) are fixed by welding.

6. The sludge filtering and purifying device as claimed in claim 1, wherein: the filter plate (11) is a micron-sized filter plate, and the centrifugal filter cartridge (12) is a nanometer-sized filter cartridge.

7. The sludge filtering and purifying device as claimed in claim 1, wherein: one end of the inclined conveying plate (15) is fixed on the inner wall of the sediment conveying chamber (5), and the other end of the inclined conveying plate (15) is connected with the sediment discharging plate (16).

8. The sludge filtering and purifying device as claimed in claim 1, wherein: and the secondary hydraulic cylinder (6) is fixed on the inner wall on the left side of the sediment conveying chamber (5) by welding.