CN111233294A

CN111233294A - Centrifugal separation device for river sludge treatment process

Info

Publication number: CN111233294A
Application number: CN202010074350.8A
Authority: CN
Inventors: 奚文婷
Original assignee: 奚文婷
Current assignee: Yueqing LUHANG Electric Co., Ltd
Priority date: 2020-01-22
Filing date: 2020-01-22
Publication date: 2020-06-05
Anticipated expiration: 2040-01-22
Also published as: CN111233294B; CN112321131A

Abstract

The invention discloses a centrifugal separation device for a river sludge treatment process, which comprises a shell, a sludge inlet pipe, fixed seats and a rotary drum, wherein one end of the shell is a first conical part, two ends of the shell are fixedly welded with the fixed seats, the rotary drum is movably connected between the two fixed seats through a bearing, one end of the rotary drum is in torque connection with the outside, the rotary drum is of a hollow structure, one end of the rotary drum is a second conical part, the first conical part and the second conical part are arranged in the same vertical plane, the sludge inlet pipe is arranged in the rotary drum, one end of the sludge inlet pipe and one end of the rotary drum are connected with a differential clutch, one end of the second conical part is provided with a rectifying cone, the outside of the rectifying cone is uniformly provided with scrapers, the rotating outer diameter of each scraper is equal to the inner diameter of the sludge inlet pipe, and the rectifying cone is attached to the side, the invention has the characteristics of convenient cleaning and internal sludge removal.

Description

Centrifugal separation device for river sludge treatment process

Technical Field

The invention relates to the technical field of sludge treatment, in particular to a centrifugal separation device for a river sludge treatment process.

Background

Sludge from refinery sewage treatment plants consists of sludge, scum and excess activated sludge, commonly referred to as "triple-sludge". The oil sludge comprises dirty oil. The centrifugal dehydrator is a traditional sludge treatment device which utilizes the centrifugal force generated by the high-speed rotation of a rotary drum to perform solid-liquid separation.

The existing sludge centrifugal separation device is very troublesome because sludge is slowly fed by external thrust in a sludge inlet pipe, a large amount of sludge is easily deposited on the pipe wall in the contact friction process of slurry and the pipe wall, and the sludge is manually cleaned in the sludge inlet pipe by a scraping method during cleaning; meanwhile, the inner wall of the rotary drum of the centrifugal separation device can deposit mud dirt, and the shell needs to be opened for washing during cleaning due to the inside mud conveying screw, or a plurality of one-way spray holes are arranged in the inner wall, so that the integrity of the device can be damaged. Therefore, it is necessary to design a centrifugal separation device for river sludge treatment process, which is convenient to clean and removes internal sludge.

Disclosure of Invention

The invention aims to provide a centrifugal separation device for a river sludge treatment process, so as to solve the problems in the background technology.

In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a centrifugal separation device for river course sludge treatment process, includes the shell, advances mud pipe, fixing base and rotary drum, the one end of shell is first toper portion, the both ends of shell and fixing base pass through welded fastening, two there is the rotary drum through bearing swing joint between the fixing base, the one end and the external torque of rotary drum are connected, the rotary drum is hollow structure, and its one end is second toper portion, first toper portion and second toper portion set up in same vertical plane, the inside of rotary drum is provided with into mud pipe, it is connected with differential clutch with the one end of rotary drum to advance mud pipe.

Further, the fairing cone is installed to the one end of second toper portion, the outside of fairing cone evenly is provided with the scraper, the rotatory external diameter of scraper equals into the internal diameter of mud pipe.

Further, the laminating of rectification awl is at the lateral wall of second toper portion, one-way tooth hole has evenly been seted up to one side of rectification awl, one side of fluted disc evenly is provided with one-way tooth, one-way tooth and one-way tooth hole intermeshing, there is the fluted disc in the inside of rectification awl through bearing swing joint, first motor is still installed to the inside of rectification awl, the gear has been cup jointed to the output shaft outside of first motor, gear and fluted disc mesh mutually, the through-hole has evenly been seted up on the fluted disc, and has run through the trachea in the through-hole, tracheal one end through connection has high compression pump.

Furthermore, one side of rectification awl is connected with the stay cord, the fluted disc is passed in the stay cord activity, there is the rope reel inside of second toper portion through bearing swing joint, the stay cord winding is on the rope reel, one side of rope reel is connected with one-way clutch, one end of one-way clutch is connected with the second motor.

Furthermore, a screen filter is installed inside the shell, a reclaimed water area and a clean water area are respectively arranged on two sides of the screen filter, the reclaimed water area and the clean water area are both communicated with an external water flow collecting end through a pipeline, a water tank is communicated with one side of the clean water area through a pipeline, a water pump is arranged at the top of the water tank, a water inlet end of the water pump is communicated with the water tank through a pipeline, a water outlet end of the water pump is communicated with the shell through a pipeline, and a water outlet end of the water pump is communicated with the reclaimed water area and the clean water area through pipelines.

Furthermore, the water outlet end of the water pump is provided with a magnetic suction joint component, the magnetic suction joint component comprises an outer electromagnetic joint, the outer electromagnetic joint is connected with a pipeline of the water outlet end of the water pump, a telescopic threaded pipe is connected to the rotary drum in a penetrating manner, one end of the telescopic threaded pipe is connected with an inner electromagnetic joint, the inner electromagnetic joint and the outer electromagnetic joint are mutually attracted, and the rotary drum is evenly provided with one-way spray holes.

Furthermore, the outside of second toper portion is provided with fortune mud spiral, the outside of rotary drum is provided with fortune water spiral, a plurality of mud hole has been seted up to the outer wall of rotary drum, fortune mud spiral and the inside shape looks adaptation of first toper portion, fortune water spiral and the inner wall shape looks adaptation of shell, fortune water spiral and fortune mud spiral are to opposite.

Compared with the prior art, the invention has the following beneficial effects: in the invention, the raw materials are mixed,

(1) by arranging the rectifying cone, the fluted disc and other components, the first motor and the high-pressure air pump are started when the work is finished, the whole rectifying cone is ejected out after the rectifying cone has a certain rotating speed, and the scraper is used for rotationally cleaning mud dirt on the inner wall of the mud inlet pipe, so that the mud dirt in the mud inlet pipe can be taken out in a moment, and the cleaning efficiency is high;

(2) by arranging the second motor, the one-way clutch and other components, when the rectifying cone is cleaned, the pulling rope is used for pulling the rectifying cone back to the original position, so that the one-way teeth are meshed with the one-way tooth holes for next cleaning, and when the rectifying cone is normally operated, the rectifying cone is used for shunting sludge, so that the two functions of the rectifying cone are conveniently switched;

(3) the mud cake is conveyed to the front end by arranging the flushing device and the rotary drum, and the water in the mud cake is extruded while the mud cake is conveyed by reducing the space of the conical part, so that the effect of continuous layered dehydration is realized, and the dehydration is more sufficient; the separated water is discharged from the rear side, the filtered water is collected, the inner wall of the shell is flushed by utilizing the pressurization of a water pump, or the reclaimed water is directly discharged outwards, the reclaimed water area is directly connected with the outlet end of the water pump to reversely flush the screen filter, so that the service life of the filter screen is prolonged;

(4) through being provided with magnetism and inhale the joint subassembly, rotate the rotary drum to the position that two magnets align, make the electro-magnet circular telegram, stretch out the back with rotary drum and water pump outlet end and couple together and fill water, the slow reciprocating rotation of rotary drum makes one-way orifice reciprocal the wasing of shell inner wall, need not to open the shell or set up a plurality of shower nozzles, hoisting device's whole leakproofness.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

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

FIG. 2 is a schematic view of the installation of the drum and the flushing device of the present invention;

FIG. 3 is a schematic view of the installation of the fairing cone and mud inlet pipe of the present invention;

FIG. 4 is a schematic view of the fluted disc and the fairing cone of the present invention;

FIG. 5 is a schematic view of the fluted disc and unidirectional teeth of the present invention;

FIG. 6 is a schematic view of the mid-water and clean-water zones of the present invention installed;

FIG. 7 is a schematic view of a magnetic attachment assembly of the present invention;

in the figure: 1. a housing; 2. a mud inlet pipe; 3. a flushing device; 4. a fixed seat; 5. a drum; 11. a first tapered portion; 12. a screen filter; 121. a reclaimed water area; 122. a clear water zone; 31. a water tank; 32. a water pump; 33. a magnetic attachment assembly; 331. an external electromagnetic joint; 332. an inner electromagnetic joint; 333. a telescopic threaded pipe; 334. one-way spraying holes; 51. a second tapered portion; 511. conveying mud spirally; 512. a rectifying cone; 513. a scraper; 514. a unidirectional perforation; 52. carrying out water conveying spiral; 53. a mud outlet hole; 54. a fluted disc; 541. one-way teeth; 55. a first motor; 551. a gear; 56. a high pressure air pump; 561. an air tube; 57. a rope reel; 571. pulling a rope; 572. a second motor; 573. a one-way clutch.

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.

Referring to fig. 1-2, the present invention provides the following technical solutions: a centrifugal separation device for a river sludge treatment process comprises a shell 1, a sludge inlet pipe 2, a fixed seat 4 and a rotary drum 5, wherein one end of the shell 1 is a first conical part 11, two ends of the shell 1 are fixedly welded with the fixed seat 4, the rotary drum 5 is movably connected between the two fixed seats 4 through a bearing, one end of the rotary drum 5 is in torque connection with the outside, the rotary drum 5 is of a hollow structure, one end of the rotary drum 5 is a second conical part 51, the first conical part 11 and the second conical part 51 are arranged in the same vertical plane, the sludge inlet pipe 2 is arranged inside the rotary drum 5, one ends of the sludge inlet pipe 2 and the rotary drum 5 are connected with a differential clutch, when the centrifugal separation device works, the sludge inlet pipe 2 and the rotary drum 5 are driven to rotate by the outside torque, sludge discharged from the sludge inlet pipe 2 is fed into the rotary drum 5 due to the action of centrifugal force, and the differential clutch is used for enabling the sludge, the emergent speed of the slurry in the slurry inlet pipe 2 is increased, so that the slurry can be thrown into the shell 1;

as shown in fig. 3, a fairing cone 512 is installed at one end of the second conical part 51, scrapers 513 are uniformly arranged outside the fairing cone 512, the rotating outer diameter of each scraper 513 is equal to the inner diameter of the mud inlet pipe 2, when the fairing cone 512 works normally, the scraper is fixed on the second conical part 51, mud entering the mud inlet pipe 2 is dispersed by the fairing cone 512 and then is spun out of the mud outlet hole 53 through the rotation of the scraper 513, the mud and the water are better separated by diffusion, and when the cone works normally, the fairing cone is used for shunting the mud, so that the two functions of the cone are switched conveniently;

as shown in fig. 4-5, the rectifying cone 512 is attached to the side wall of the second cone portion 51, one side of the rectifying cone 512 is uniformly provided with a unidirectional tooth hole 514, one side of the toothed disc 54 is uniformly provided with a unidirectional tooth 541, the unidirectional tooth 541 is engaged with the unidirectional tooth hole 514, the inside of the rectifying cone 512 is movably connected with the toothed disc 54 through a bearing, the first motor 55 is further installed inside the rectifying cone 512, the outer part of the output shaft of the first motor 55 is sleeved with a gear 551, the gear 551 is engaged with the toothed disc 54, the toothed disc 54 is uniformly provided with through holes, an air pipe 561 penetrates through the through holes, one end of the air pipe 561 is connected with a high pressure air pump 56, when the rectifying cone 512 is in normal operation, the rotation of the second cone portion 51 drives the rectifying cone 512 to rotate due to the engagement of the unidirectional tooth 541 and the unidirectional tooth hole 514, when mud cleaning is performed, the first motor 55 is started, giving a rotation torque to the rectifier cone 512, starting the high-pressure air pump 56 when the speed reaches a set value, pumping high-pressure air into a contact surface between the rectifier cone 512 and the fluted disc 54 from the air pipe 561, violently pushing the rectifier cone 512 to move forwards, separating the one-way teeth 541 from the one-way tooth holes 514, enabling the rotation of the rectifier cone 512 not to be influenced, enabling the scraper 513 to start rotating and cleaning the inner wall of the mud inlet pipe 2, and bringing out mud scale in the mud inlet pipe 2 in a moment, wherein the cleaning efficiency is high;

as shown in fig. 4, a pull rope 571 is connected to one side of the fairing cone 512, the pull rope 571 movably passes through the gear disc 54, the rope disc 57 is movably connected to the inside of the second cone portion 51 through a bearing, the pull rope 571 is wound on the rope disc 57, a one-way clutch 573 is connected to one side of the rope disc 57, one end of the one-way clutch 573 is connected with the second motor 572, when the fairing cone 512 moves rightwards, the one end of the pull rope 571 is pulled to move and drive the rope disc 57 to rotate, at this time, the one-way clutch 573 is in a release state, the second motor 572 does not hinder the rotation of the rope disc 57, when the fairing cone 512 moves to the tail end, the second motor 572 is started, the one-way clutch 573 is in a load state, an output shaft of the second motor drives the rope disc 57 to rotate anticlockwise, the fairing cone 512 is pulled back to one side of;

as shown in fig. 6, a mesh filter 12 is installed inside a housing 1, a reclaimed water area 121 and a clean water area 122 are respectively arranged at two sides of the mesh filter 12, the reclaimed water area 121 and the clean water area 122 are both communicated with an external water flow collecting end through a pipeline, one side of the clean water area 122 is communicated with a water tank 31 through a pipeline, a water pump 32 is arranged at the top of the water tank 31, a water inlet end of the water pump 32 is communicated with the water tank 31 through a pipeline, a water outlet end of the water pump 32 is communicated with the housing 1 through a pipeline, a water outlet end of the water pump 32 is communicated with the reclaimed water area 121 and the clean water area 122 through pipelines, the reclaimed water area 121 is used for receiving water flow in the housing 1, the clean water area 122 is used for receiving water flow in the mesh filter 12, after water in the clean water area 122 flows into the water tank 31 for storage, the water pump 32 is started to pump the housing 1 for washing when washing is needed, when reverse washing is performed, only a valve on a pipeline connecting, the screen filter 12 can be washed reversely, so that the service life of the filter screen is prolonged;

referring to fig. 7, a magnetic connector assembly 33 is disposed at the water outlet end of the water pump 32, the magnetic connector assembly 33 includes an outer electromagnetic connector 331, the outer electromagnetic connector 331 is connected to a pipeline at the water outlet end of the water pump 32, a telescopic screw tube 333 is connected to the rotary drum 5, an inner electromagnetic connector 332 is connected to one end of the telescopic screw tube 333, the inner electromagnetic connector 332 and the outer electromagnetic connector 331 are attracted to each other, and one-way spray holes 334 are uniformly formed in the rotary drum 5, when the inner wall of the housing 1 and the outer wall of the rotary drum 5 are to be washed, the rotary drum 5 is rotated to the lower side to align the telescopic screw tube 333 with the outer electromagnetic connector 331, then the outer electromagnetic connector 331 and the inner electromagnetic connector 332 are energized to attract each other, the telescopic screw tube 333 is in an extended state, at this time, water at the water outlet end of the water pump 32 can be pumped into the inner cavity of the rotary drum 5, pressurized water is sprayed from the one-way spray holes, the water in the one-way spray holes can be uniformly sprayed on the inner wall of the shell 1 without opening the shell or arranging a plurality of spray heads, so that the overall sealing performance of the device is improved;

as shown in fig. 2, a mud transporting screw 511 is arranged outside the second conical portion 51, a water transporting screw 52 is arranged outside the rotary drum 5, a plurality of mud outlet holes 53 are formed in the outer wall of the rotary drum 5, the mud transporting screw 511 is matched with the inner shape of the first conical portion 11, the water transporting screw 52 is matched with the inner wall shape of the housing 1, the rotating directions of the water transporting screw 52 and the mud transporting screw 511 are opposite, when the rotary drum 5 rotates, mud is attached to the inner wall of the housing 1 due to centrifugal force, water falls downwards onto the water transporting screw 52 due to gravity, mud is carried upwards by the mud transporting screw 511, mud cakes are carried upwards due to the fact that the diameters of the second conical portion 51 and the first conical portion 11 are reduced continuously, mud cakes are carried upwards, and water in the mud is extruded out continuously and falls into the water transporting screw 52 to be carried downwards.

Example (b): when the centrifugal separation device is used, external torque drives the sludge inlet pipe 2 and the rotary drum 5 to rotate when the centrifugal separation device works, sludge discharged from the sludge inlet pipe 2 is sent into the rotary drum 5 under the action of centrifugal force, and the differential clutch is used for enabling the sludge inlet pipe 2 and the rotary drum 5 to have a rotation speed difference, so that the emergent speed of slurry in the sludge inlet pipe 2 is increased, and the slurry can be thrown into the shell 1; when the rectifying cone 512 works normally, the rectifying cone is fixed on the second conical part 51, slurry entering the mud inlet pipe 2 is dispersed by the rectifying cone 512 and then is spun out of the mud outlet hole 53 through the scraper 513, the slurry is better separated by dispersion, and the rectifying cone is used for shunting the sludge during normal operation, so that the two functions of the rectifying cone are convenient to switch; when slurry is cleaned, the first motor 55 is started, the output shaft of the first motor drives the fluted disc 54 to rotate through the gear 551, the rectifying cone 512 is provided with a self-rotation torque, when the speed reaches a set value, the high-pressure air pump 56 is started, high-pressure air is pumped into the contact surface between the rectifying cone 512 and the fluted disc 54 from the air pipe 561, the high-pressure air violently pushes the rectifying cone 512 to move forwards, the one-way teeth 541 are separated from the one-way tooth holes 514, the rotation of the rectifying cone 512 is not affected, at the moment, the scraper 513 starts to rotate and cleans the inner wall of the sludge inlet pipe 2, sludge in the sludge inlet pipe 2 can be taken out in a moment, and the cleaning efficiency is high; when the rectifier cone 512 moves rightwards, one end of a pull rope 571 is pulled by the rectifier cone 512 to move, the rope disc 57 is driven to rotate, the one-way clutch 573 is in a tripping state, the second motor 572 does not obstruct the rope disc 57 to rotate, when the rectifier cone 512 moves to the tail end, the second motor 572 is started, the one-way clutch 573 is in a loading state, an output shaft of the second motor 572 drives the rope disc 57 to rotate anticlockwise, the rectifier cone 512 is pulled back to one side of the fluted disc 54, and the one-way teeth 541 and the one-way tooth holes 514 are meshed with each other; the clean water area 122 is used for receiving water flow in the mesh filter 12, after the water flow in the clean water area 122 flows into the water tank 31 to be stored, the water pump 32 is started when the water flow needs to be flushed, the water pump pumps the water into the shell 1 to flush, and when the water flow needs to be flushed reversely, the valve on a pipeline connecting the water outlet end of the water pump 32 and the clean water area 122 is only needed to be started, so that the reverse flushing can be performed on the mesh filter 12, and the service life of the filter screen is prolonged; when the inner wall of the shell 1 and the outer wall of the rotary drum 5 are to be washed, the rotary drum 5 is firstly rotated to the lower part, the telescopic threaded pipe 333 is aligned with the outer electromagnetic connector 331, then the outer electromagnetic connector 331 and the inner electromagnetic connector 332 are electrified and attract each other, the telescopic threaded pipe 333 is in an extension state, water at the water outlet end of the water pump 32 can be pumped into the inner cavity of the rotary drum 5 at the moment, the pressurized water flow is sprayed out from the one-way spray hole 334, the rotary drum 5 can be slowly rotated in a reciprocating manner at the moment, the water in the one-way spray hole can be more uniformly sprayed on the inner wall of the shell 1, the shell does not need to be opened or a plurality of spray heads are arranged, and the overall sealing performance of the device; when the rotary drum 5 rotates, the mud is attached to the inner wall of the shell 1 due to centrifugal force, the water falls downwards onto the water conveying screw 52 due to gravity, the mud is carried upwards by the mud conveying screw 511, the mud cake is carried upwards due to the fact that the diameters of the second conical part 51 and the first conical part 11 are reduced continuously, the water in the mud is extruded out of the mud cake continuously, and the mud cake falls onto the water conveying screw 52 and is conveyed downwards.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a centrifugal separation device for river course sludge treatment process, includes shell (1), advances mud pipe (2), fixing base (4) and rotary drum (5), its characterized in that: the one end of shell (1) is first toper portion (11), the both ends of shell (1) are through welded fastening with fixing base (4), two there are rotary drum (5) through bearing swing joint between fixing base (4), the one end and the external torque of rotary drum (5) are connected, rotary drum (5) are hollow structure, and its one end is second toper portion (51), first toper portion (11) and second toper portion (51) set up in same vertical plane, the inside of rotary drum (5) is provided with into mud pipe (2), it is connected with differential clutch with the one end of rotary drum (5) to advance mud pipe (2).

2. The centrifugal separation device for the river sludge treatment process according to claim 1, wherein: a rectifying cone (512) is installed at one end of the second conical part (51), scrapers (513) are uniformly arranged outside the rectifying cone (512), and the rotating outer diameter of each scraper (513) is equal to the inner diameter of the mud inlet pipe (2).

3. The centrifugal separation device for the river sludge treatment process according to claim 2, wherein: the utility model discloses a motor, including cone (512), one side of cone (512) is laminated at the lateral wall of second toper portion (51), one-way perforation (514) have evenly been seted up to one side of cone (512), one side of fluted disc (54) evenly is provided with one-way tooth (541), one-way tooth (541) and one-way perforation (514) intermeshing, there is fluted disc (54) inside cone (512) through bearing swing joint, first motor (55) are still installed to the inside of cone (512), gear (551) have been cup jointed to the output shaft outside of motor (55), gear (551) and fluted disc (54) mesh mutually, the through-hole has evenly been seted up on fluted disc (54), and has run through trachea (561) in the through-hole, the one end through connection of trachea (561) has high compression pump (56).

4. The centrifugal separation device for the river sludge treatment process according to claim 3, wherein: one side of the rectifying cone (512) is connected with a pull rope (571), the pull rope (571) movably penetrates through the fluted disc (54), the inside of the second conical part (51) is movably connected with a rope disc (57) through a bearing, the pull rope (571) is wound on the rope disc (57), one side of the rope disc (57) is connected with a one-way clutch (573), and one end of the one-way clutch (573) is connected with a second motor (572).

5. The centrifugal separation device for the river sludge treatment process according to claim 4, wherein: the water purifier is characterized in that a screen filter (12) is installed inside the shell (1), a reclaimed water area (121) and a clear water area (122) are respectively arranged on two sides of the screen filter (12), the reclaimed water area (121) and the clear water area (122) are both connected with an external water flow collecting end through a pipeline in a penetrating manner, a water tank (31) is connected with one side of the clear water area (122) through a pipeline in a penetrating manner, a water pump (32) is arranged at the top of the water tank (31), a water inlet end of the water pump (32) is communicated with the water tank (31) through a pipeline, a water outlet end of the water pump (32) is communicated with the shell (1) through a pipeline, and a water outlet end of the water pump (32) is connected with the reclaimed water area (121) and the clear water area (122) through.

6. The centrifugal separation device for the river sludge treatment process according to claim 5, wherein: the water outlet end of the water pump (32) is provided with a magnetic suction joint component (33), the magnetic suction joint component (33) comprises an outer electromagnetic joint (331), the outer electromagnetic joint (331) is connected with a pipeline of the water outlet end of the water pump (32), a telescopic threaded pipe (333) is connected on the rotary drum (5) in a penetrating way, one end of the telescopic threaded pipe (333) is connected with an inner electromagnetic joint (332), the inner electromagnetic joint (332) and the outer electromagnetic joint (331) are attracted with each other, and one-way spray holes (334) are uniformly formed in the rotary drum (5).

7. The centrifugal separation device for the river sludge treatment process according to claim 6, wherein: the outside of second toper portion (51) is provided with fortune mud spiral (511), the outside of rotary drum (5) is provided with fortune water spiral (52), a plurality of mud hole (53) have been seted up to the outer wall of rotary drum (5), fortune mud spiral (511) and the inside shape looks adaptation of first toper portion (11), fortune water spiral (52) and the inner wall shape looks adaptation of shell (1), fortune water spiral (52) and fortune mud spiral (511) revolve to opposite.