CN113332784A - Centrifugal rotary drum type sewage filtering and recycling device - Google Patents

Centrifugal rotary drum type sewage filtering and recycling device Download PDF

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Publication number
CN113332784A
CN113332784A CN202110658863.8A CN202110658863A CN113332784A CN 113332784 A CN113332784 A CN 113332784A CN 202110658863 A CN202110658863 A CN 202110658863A CN 113332784 A CN113332784 A CN 113332784A
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China
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fixedly connected
rotary drum
box
wall
scraping ring
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CN202110658863.8A
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Chinese (zh)
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CN113332784B (en
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罗宇
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Xiangtan Huibo Centrifuge Co ltd
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/44—Regenerating the filter material in the filter
    • B01D33/46—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
    • B01D33/11—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for outward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/80—Accessories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/80—Accessories
    • B01D33/801—Driving means, shaft packing systems or the like
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F7/00—Aeration of stretches of water
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Centrifugal Separators (AREA)

Abstract

The invention discloses a centrifugal rotary drum type sewage filtering and recycling device which comprises a base, wherein the upper end of the base is fixedly connected with an outer box body, a rotary drum box is connected in the outer box body in a rotating mode, a plurality of filtering holes are formed in the inner wall of the rotary drum box, the inner bottom of the outer box body is fixedly connected with a driving motor, an output shaft of the driving motor is fixedly connected to the lower end of the rotary drum box, a mud scraping ring is connected in the rotary drum box in a sliding mode, and a plurality of bristles are fixedly connected to the circumferential outer wall of the mud scraping ring. The sludge scraping ring is driven to continuously rotate by utilizing the kinetic energy generated when the rotary drum box rotates, and the sludge scraping ring can reciprocate up and down under the matching of the reciprocating screw rod and the screw rod nut, so that the sludge thrown onto the inner wall of the rotary drum box is scraped off, the sludge is prevented from being accumulated on the inner wall of the rotary drum box to block the filter holes, higher sewage filtering efficiency can be kept without stopping the machine for cleaning, compared with the traditional treatment means, water resources are saved, and the overall sewage treatment efficiency is improved.

Description

Centrifugal rotary drum type sewage filtering and recycling device
Technical Field
The invention relates to the technical field of sewage treatment related equipment, in particular to a centrifugal rotary drum type sewage filtering and recycling device.
Background
For domestic sewage, most of fixed impurities are sludge, in the process of sewage treatment, the most effective treatment means for sewage in the initial stage is filtration, and common filtration equipment can remove most of solid impurities.
The centrifugal filtering equipment is a common sewage filtering equipment, and the equipment utilizes the centrifugal force generated when the rotary drum rotates at high speed to throw sewage containing sludge to the periphery of the inner wall of the rotary drum so as to force the sewage to pass through the filtering holes on the wall of the rotary drum to achieve the purpose of filtering. However, as the filtering time increases, part of sludge is thrown to the inner wall of the rotary drum and then gradually blocks the filtering holes, so that the filtering efficiency is greatly reduced, and therefore, the existing centrifugal filtering equipment is often cleaned once every a period of time, which wastes water resources and affects the sewage treatment efficiency. Accordingly, the present application provides a centrifugal drum type sewage filtering and recycling device.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a centrifugal drum type sewage filtering and recycling device.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a centrifugation rotary drum formula sewage filters recovery unit, includes the base, the upper end fixedly connected with outer box of base, outer box internal rotation is connected with the rotary drum case, a plurality of filtration pores have been seted up on the inner wall of rotary drum case, the interior bottom fixedly connected with driving motor of outer box, just driving motor's output shaft fixed connection is at the lower extreme of rotary drum case, rotary drum incasement sliding connection has the mud scraping ring, a plurality of brush hairs of fixedly connected with on the circumference outer wall of mud scraping ring, rotary drum incasement symmetry inlays establishes two slide bars, just the slide bar runs through and sets up the mud scraping ring, the drive arrangement that the mud scraping ring reciprocated is installed to the drive in the rotary drum case.
Preferably, the driving device comprises a reciprocating screw rod rotatably connected to the bottom in the rotary drum box, the inner wall of the circumference of the mud scraping ring is symmetrically and fixedly connected with two supporting rods, the two opposite ends of the two supporting rods are fixedly connected with a screw nut together, and the screw nut is in threaded connection with the reciprocating screw rod.
Preferably, a rotary groove is formed in the inner bottom of the rotary drum box, a bearing is installed in the rotary groove, and the reciprocating lead screw is in interference fit with the bearing.
Preferably, the through-hole has been seted up on the filtration pore inner wall, the embedded gag lever post that is equipped with of through-hole, sliding connection has the fender with filtration pore complex in the through-hole, the gag lever post passes through spring elastic connection with the fender, the fender adopts magnetic material to make, a plurality of permanent magnetism pieces of fixedly connected with on the lateral wall of mud scraping ring, and a plurality of the permanent magnetism piece is along the equidistant distribution of circumference of mud scraping ring.
Preferably, the upper end of the screw nut is rotatably connected with a sealing plate, the sealing plate is fixedly connected with a telescopic air bag, the upper end of the telescopic air bag is fixedly connected to the inner top of the outer box body, and the telescopic air bag is provided with a one-way air inlet pipe and a one-way air outlet pipe which are communicated with the inner part of the telescopic air bag.
Preferably, the one-way valves are installed in the one-way air inlet pipe and the one-way air outlet pipe, the one-way valve in the one-way air inlet pipe limits air to flow from the outside of the telescopic air bag to the inside of the telescopic air bag in a one-way mode, and the one-way valve in the one-way air outlet pipe limits air to flow from the inside of the telescopic air bag to the outside of the telescopic air bag in a one-way mode.
Preferably, the upper end of the drum box is provided with a water inlet, the outer box body is provided with a water inlet pipe communicated with the inside of the water inlet, and the inner wall of the outer box body is provided with a water outlet pipe.
Preferably, a first sludge discharge groove is formed in the inner bottom of the rotary drum box, a second sludge discharge groove is formed in the inner bottom of the outer box body, a baffle is connected to the second sludge discharge groove in a sliding mode, a threaded hole is formed in the side wall of the outer box body, and a pushing mechanism for pushing the baffle to move is installed in the threaded hole.
Preferably, the pushing mechanism comprises a screw rod in threaded connection with the threaded hole, the screw rod is in rotary connection with the baffle, and one end, far away from the baffle, of the screw rod is fixedly connected with a rotating wheel.
The invention has the following beneficial effects:
1. through the arrangement of the driving device, the mud scraping ring is driven to continuously rotate by utilizing kinetic energy generated when the rotary drum box rotates, and can reciprocate up and down under the matching of the reciprocating screw rod and the screw rod nut, so that sludge thrown onto the inner wall of the rotary drum box is scraped off, and the sludge is prevented from being accumulated on the inner wall of the rotary drum box to block filter holes, so that higher sewage filtering efficiency can be kept without stopping for cleaning, and compared with the traditional treatment means, water resources are saved, and the overall sewage treatment efficiency is improved;
2. through arranging the limiting rod, the spring, the mud guard, the permanent magnetic sheet and other parts, the permanent magnetic sheet can attract the magnetic mud guard to enter a filter hole and block the filter hole when the mud guard is close to a certain filter hole in the process of moving the mud guard up and down, so that the mud guard is prevented from pushing the mud into the filter hole when the mud guard scrapes the mud;
3. through setting up parts such as flexible gasbag, closing plate, one-way intake pipe and one-way outlet duct, can constantly make flexible gasbag flexible and continuously in the sewage of drum incasement is gone into with the air when mud scraping ring reciprocates, improve the oxygen content of sewage, provide a suitable living environment when handling subsequent good oxygen type microorganism.
Drawings
FIG. 1 is a schematic structural view of a centrifugal drum type sewage filtering and recycling device according to the present invention;
FIG. 2 is a schematic perspective view of a drum box according to the present invention;
FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 1;
FIG. 4 is an enlarged view of the structure at B in FIG. 1;
FIG. 5 is an enlarged view of the structure at C in FIG. 1;
FIG. 6 is an enlarged view of the structure at D in FIG. 1;
FIG. 7 is an enlarged view of the structure at E in FIG. 1;
in the figure: the device comprises a base 1, an outer box 2, a rotary drum box 3, a driving motor 4, a mud scraping ring 5, a sliding rod 6, a supporting rod 7, a screw nut 8, a reciprocating screw rod 9, a water inlet 10, a water inlet pipe 11, a through hole 12, a filtering hole 13, a limiting rod 14, a spring 15, a mud guard 16, a telescopic air bag 17, a unidirectional air inlet pipe 18, a unidirectional air outlet pipe 19, a rotary groove 20, a bearing 21, a first mud discharging groove 22, a second mud discharging groove 23, a threaded hole 24, a screw rod 25, a rotating wheel 26, a baffle 27, a sealing plate 29 and a permanent magnet sheet 30.
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.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-7, a centrifugal drum type sewage filtering and recycling device comprises a base 1, an outer box 2 is fixedly connected to the upper end of the base 1, a drum box 3 is rotatably connected to the outer box 2, a water inlet 10 is formed in the upper end of the drum box 3, and a water inlet pipe 11 communicated with the inside of the water inlet 10 is installed on the outer box 2. It should be noted that the inner top of the drum box 3 is in close contact with the inner top of the outer box 2, and the water outlet end of the water inlet pipe 11 is disposed at the inner top of the outer box 2 and in the water inlet 10, so that the sewage discharged from the water inlet pipe 11 can smoothly flow into the drum box 3, and at the same time, the drum box 3 can be prevented from vibrating to directly splash the sewage in the drum box 3 into the outer box 2 without being filtered when rotating at a high speed.
The inner wall of the outer box body 2 is provided with a water outlet pipe 28. A plurality of filtration holes 13 have been seted up on the inner wall of rotary drum case 3, through-hole 12 has been seted up on filtration hole 13 inner wall, the embedded gag lever post 14 that is equipped with of through-hole 12, sliding connection has fender 16 with filtration hole 13 complex in through-hole 12, gag lever post 14 passes through spring 15 elastic connection with fender 16, fender 16 adopts magnetic material to make, a plurality of permanent-magnet pieces 30 of fixedly connected with on the lateral wall of mud scraping ring 5, and a plurality of permanent-magnet pieces 30 are along the equidistant distribution of circumference of mud scraping ring 5. The permanent magnet pieces 30 are opposite to the different magnetic poles of the adjacent filter holes 13, and the drum box 3 and the mud scraping ring 5 synchronously rotate, so that the permanent magnet pieces 30 are always opposite to the mud guard 16 in the same vertical direction, and when the permanent magnet pieces are close to each other, magnetic attraction is always generated. When the mud scraping ring 5 moves to be attached to a certain filter hole 13, the filter hole 13 can be shielded, so that the filter hole 13 attached to the mud scraping ring 5 is not subjected to the impact of sewage, and the mud guard 16 cannot enter the filter hole 13.
First mud groove 22 has been seted up to the interior bottom of rotary drum case 3, and second mud groove 23 has been seted up to the interior bottom of outer box 2, and sliding connection has baffle 27 in second mud groove 23, and threaded hole 24 has been seted up to the lateral wall of outer box 2, installs the pushing mechanism who promotes baffle 27 and remove in the threaded hole 24. The pushing mechanism comprises a screw rod 25 in threaded connection with the threaded hole 24, the screw rod 25 is in rotary connection with the baffle plate 27, and one end, far away from the baffle plate 27, of the screw rod 25 is fixedly connected with a rotating wheel 26. It should be noted that, the inner space of the threaded hole 24 is larger than the inner space of the second sludge discharge groove 23, so that when the screw 25 drags the baffle 27 to move, the baffle 27 can be smoothly drawn out from the second sludge discharge groove 23, and the rotary drum box 3 is convenient to clean.
Outer box 2's interior bottom fixedly connected with driving motor 4, and driving motor 4's output shaft fixed connection is at the lower extreme of rotary drum case 3, and sliding connection has mud scraping ring 5 in the rotary drum case 3, a plurality of brush hairs of fixedly connected with on the circumference outer wall of mud scraping ring 5, and rotary drum case 3 internal symmetry inlays establishes two slide bars 6, and slide bar 6 runs through and sets up mud scraping ring 5, installs the drive that the drive mud scraping ring 5 reciprocated in the rotary drum case 3.
The driving device comprises a reciprocating screw 9 rotatably connected to the inner bottom of the rotary drum box 3, and it should be noted that the upper end of the reciprocating screw 9 is fixedly connected to the inner top of the outer box 2. Specifically, a rotary groove 20 is formed in the inner bottom of the rotary drum box 3, a bearing 21 is installed in the rotary groove 20, and the reciprocating screw 9 is in interference fit with the bearing 21. Two bracing pieces 7 of symmetry fixedly connected with on the circumference inner wall of mud scraping ring 5, the common fixedly connected with lead screw nut 8 of the relative one end of two bracing pieces 7, and lead screw nut 8 and reciprocal lead screw 9 threaded connection.
The upper end of the screw nut 8 is rotatably connected with a sealing plate 29, a telescopic air bag 17 is fixedly connected to the sealing plate 29, the upper end of the telescopic air bag 17 is fixedly connected to the inner top of the outer box 2, a one-way air inlet pipe 18 and a one-way air outlet pipe 19 which are communicated with the inner portion of the telescopic air bag 17 are arranged on the telescopic air bag 17, one-way valves are arranged in the one-way air inlet pipe 18 and the one-way air outlet pipe 19, the one-way valves in the one-way air inlet pipe 18 limit air to flow to the telescopic air bag 17 from the outside of the telescopic air bag 17 in a one-way mode, and the one-way valves in the one-way air outlet pipe 19 limit air to flow to the outside of the telescopic air bag 17 from the inside of the telescopic air bag 17 in a one-way mode. .
In the process of filtering sewage, sewage to be treated continuously flows into the water inlet 10 along the water inlet pipe 11 and enters the rotary drum box 3. The driving motor 4 can drive the rotary drum box 3 to circularly rotate at a high speed after being started, sewage entering the rotary drum box 3 continuously enters the filtering holes 13 under the high-speed swinging, flows into the outer box 2 after being filtered to remove sludge, and is finally discharged along the water outlet pipe 28.
The reciprocating screw 9 is rotatably connected with the rotary drum box 3 through the bearing 21, so the reciprocating screw 9 cannot be driven to rotate, the rotary drum box 3 can drive the two slide bars 6 inside the rotary drum box to rotate when rotating at a high speed, the mud scraping ring 5 can be driven to rotate, the support rod 7 and the screw nut 8 are driven to rotate, the screw nut 8 is in threaded connection with the reciprocating screw 9, the upper end of the reciprocating screw 9, which cannot rotate the reciprocating screw 9, is fixedly connected to the inner top of the outer box 2, the screw nut 8 reciprocates up and down along the reciprocating screw 9 and drives the support rod 7 and the mud scraping ring 5 to reciprocate up and down in the rotary drum box 3, therefore, the mud scraping ring 5 can continuously scrape off the mud thrown to the inner wall of the rotary drum box 3 by centrifugal force, the mud can be effectively prevented from being accumulated on the inner wall of the rotary drum box 3 to cause the blockage of the filter holes 13, compared with the traditional cleaning means, water resources are saved, and the machine does not need to be stopped for cleaning, so that the overall treatment efficiency of the sewage is improved.
In the up-and-down reciprocating process of the mud scraping ring 5, the mud scraping ring 5 is continuously opposite to the filtering holes 13 of each layer. When the mud scraping ring 5 is close to a certain layer of filter holes 13, the permanent magnetic sheet 30 on the mud scraping ring 5 is opposite to the unlike magnetic pole of the mud guard 16, the magnetic attraction force is large enough to overcome the elastic force of the spring 15, the mud guard 16 is sucked into the filter holes 13, and the filter holes 13 are blocked, so that when the mud scraping ring 5 scrapes the mud, the mud cannot be pushed or extruded into the filter holes 13, the filter holes 13 are effectively prevented from being blocked, after the mud scraping ring 5 leaves, the permanent magnetic sheet 30 is far away from the mud guard 16, the magnetic attraction force of the permanent magnetic sheet and the mud guard 16 is weak, so the spring 15 can pull the mud guard 16 back into the through hole 12, the sewage can be continuously discharged along the filter holes 13, and the influence on the sewage filtration cannot be generated.
Further, the screw nut 8 can drive the sealing plate 29 to synchronously move downwards to drive the screw nut 8 to be connected with the sealing plate 29 in a rotating mode when moving downwards, so that the sealing plate 29 cannot be driven to rotate, the telescopic air bag 17 can be extended, negative pressure can be generated due to the fact that the inner space is increased, air is sucked into the telescopic air bag along the one-way air inlet pipe 18, the screw nut 8 can continuously extrude the telescopic air bag 17 when moving upwards, the size of the cross-sectional telescopic air bag 17 is reduced, the air is blown into sewage in the rotary drum box 3 along the one-way air outlet pipe 19, therefore, the oxygen content in the sewage can be improved, and a good living environment can be provided for aerobic microorganisms in a microbial degradation step in a subsequent sewage treatment process.
After a large amount of sludge is trapped in the drum box 3, the rotating wheel 26 can be rotated and the screw rod 25 is driven to rotate synchronously, so that the screw rod 25 can move in the threaded hole 24 along the horizontal direction, and the baffle plate 27 can be drawn out from the second sludge discharge groove 23, so that the sludge trapped in the drum box 3 can be cleaned conveniently.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (9)

1.一种离心转鼓式污水过滤回收装置，包括底座(1)，所述底座(1)的上端固定连接有外箱体(2)，所述外箱体(2)内转动连接有转鼓箱(3)，所述转鼓箱(3)的内壁上开设有多个滤孔(13)，其特征在于，所述外箱体(2)的内底部固定连接有驱动电机(4)，且所述驱动电机(4)的输出轴固定连接在转鼓箱(3)的下端，所述转鼓箱(3)内滑动连接有刮泥环(5)，所述刮泥环(5)的圆周外壁上固定连接有多个刷毛，所述转鼓箱(3)内对称嵌设两个滑杆(6)，且所述滑杆(6)贯穿设置刮泥环(5)，所述转鼓箱(3)内安装有驱动刮泥环(5)上下移动的驱动装置。1. A centrifugal drum type sewage filtration and recovery device, comprising a base (1), an outer casing (2) is fixedly connected to the upper end of the base (1), and a rotating casing (2) is rotatably connected in the outer casing (2). A drum case (3), wherein a plurality of filter holes (13) are opened on the inner wall of the drum case (3), characterized in that a drive motor (4) is fixedly connected to the inner bottom of the outer case (2) , and the output shaft of the drive motor (4) is fixedly connected to the lower end of the drum box (3), and the drum box (3) is slidably connected with a mud scraping ring (5), and the mud scraping ring (5) A plurality of bristles are fixedly connected to the circumferential outer wall of the drum box (3), two sliding rods (6) are symmetrically embedded in the drum box (3), and the sliding rods (6) are provided with a mud scraping ring (5) through them. A driving device for driving the mud scraping ring (5) to move up and down is installed in the drum box (3). 2.根据权利要求1所述的一种离心转鼓式污水过滤回收装置，其特征在于，所述驱动装置包括转动连接在转鼓箱(3)内底部的往复丝杠(9)，所述刮泥环(5)的圆周内壁上对称固定连接有两个支撑杆(7)，两个所述支撑杆(7)的相对一端共同固定连接有丝杠螺母(8)，且所述丝杠螺母(8)与往复丝杠(9)螺纹连接。2. A centrifugal drum type sewage filtration and recovery device according to claim 1, wherein the drive device comprises a reciprocating screw (9) rotatably connected to the inner bottom of the drum box (3), the Two support rods (7) are symmetrically and fixedly connected on the circumferential inner wall of the scraper ring (5), and a lead screw nut (8) is fixedly connected to the opposite ends of the two support rods (7), and the lead screw The nut (8) is threadedly connected with the reciprocating screw (9). 3.根据权利要求2所述的一种离心转鼓式污水过滤回收装置，其特征在于，所述转鼓箱(3)的内底部开设有回转槽(20)，所述回转槽(20)内安装有轴承(21)，所述往复丝杠(9)与轴承(21)过盈配合。3. A centrifugal drum type sewage filtration and recovery device according to claim 2, characterized in that a rotary groove (20) is provided at the inner bottom of the rotary drum box (3), and the rotary groove (20) A bearing (21) is installed inside, and the reciprocating screw (9) is in an interference fit with the bearing (21). 4.根据权利要求1所述的一种离心转鼓式污水过滤回收装置，其特征在于，所述滤孔(13)内壁上开设有通孔(12)，所述通孔(12)内嵌设有限位杆(14)，所述通孔(12)内滑动连接有与滤孔(13)配合的挡泥板(16)，所述限位杆(14)与挡泥板(16)通过弹簧(15)弹性连接，所述挡泥板(16)采用磁性材料制成，所述刮泥环(5)的侧壁上固定连接有多个永磁片(30)，且多个所述永磁片(30)沿刮泥环(5)的周向等间距分布。4 . The centrifugal drum type sewage filtration and recovery device according to claim 1 , wherein a through hole ( 12 ) is opened on the inner wall of the filter hole ( 13 ), and the through hole ( 12 ) is embedded in the inner wall. 5 . A limit rod (14) is provided, a fender (16) matched with the filter hole (13) is slidably connected in the through hole (12), and the limit rod (14) passes through the fender (16) A spring (15) is elastically connected, the mudguard (16) is made of a magnetic material, a plurality of permanent magnet pieces (30) are fixedly connected to the side wall of the mud scraper (5), and a plurality of the The permanent magnet pieces (30) are distributed at equal intervals along the circumferential direction of the mud scraping ring (5). 5.根据权利要求2所述的一种离心转鼓式污水过滤回收装置，其特征在于，所述丝杠螺母(8)的上端转动连接有密封板(29)，所述密封板(29)上固定连接有伸缩气囊(17)，所述伸缩气囊(17)的上端固定连接在外箱体(2)的内顶部，所述伸缩气囊(17)上设有与其内部相通的单向进气管(18)与单向出气管(19)。5. A centrifugal drum type sewage filtration and recovery device according to claim 2, wherein a sealing plate (29) is rotatably connected to the upper end of the lead screw nut (8), and the sealing plate (29) A telescopic air bag (17) is fixedly connected to the top, the upper end of the telescopic air bag (17) is fixedly connected to the inner top of the outer box (2), and the telescopic air bag (17) is provided with a one-way air intake pipe ( 18) with one-way outlet pipe (19). 6.根据权利要求5所述的一种离心转鼓式污水过滤回收装置，其特征在于，所述单向进气管(18)与单向出气管(19)内均安装有单向阀，所述单向进气管(18)内的单向阀限制空气单向从伸缩气囊(17)外流向伸缩气囊(17)内，所述单向出气管(19)内的单向阀限制空气单向从伸缩气囊(17)内流向伸缩气囊(17)外。6. A centrifugal drum type sewage filtration and recovery device according to claim 5, characterized in that, a one-way valve is installed in the one-way air inlet pipe (18) and the one-way air outlet pipe (19), so The one-way valve in the one-way air intake pipe (18) restricts the one-way flow of air from the outside of the telescopic air bag (17) to the inside of the telescopic air bag (17), and the one-way valve in the one-way air outlet pipe (19) restricts the air in one direction. Flow from the inside of the telescopic airbag (17) to the outside of the telescopic airbag (17). 7.根据权利要求1所述的一种离心转鼓式污水过滤回收装置，其特征在于，所述转鼓箱(3)的上端开设有进水口(10)，所述外箱体(2)上安装有与进水口(10)内部相通的进水管(11)，所述外箱体(2)内壁上设有出水管(28)。7. A centrifugal drum type sewage filtration and recovery device according to claim 1, wherein the upper end of the drum box (3) is provided with a water inlet (10), and the outer box (2) is provided with a water inlet (10). A water inlet pipe (11) communicated with the inside of the water inlet (10) is installed on the upper casing, and a water outlet pipe (28) is arranged on the inner wall of the outer box body (2). 8.根据权利要求1所述的一种离心转鼓式污水过滤回收装置，其特征在于，所述转鼓箱(3)的内底部开设有第一排泥槽(22)，所述外箱体(2)的内底部开设有第二排泥槽(23)，所述第二排泥槽(23)内滑动连接有挡板(27)，所述外箱体(2)的侧壁开设有螺纹孔(24)，所述螺纹孔(24)内安装有推动挡板(27)移动的推动机构。8. A centrifugal drum type sewage filtration and recovery device according to claim 1, wherein the inner bottom of the drum box (3) is provided with a first mud discharge groove (22), and the outer box The inner bottom of the body (2) is provided with a second mud discharge groove (23), a baffle plate (27) is slidably connected in the second mud discharge groove (23), and the side wall of the outer box body (2) is provided with a baffle plate (27). A threaded hole (24) is provided, and a pushing mechanism for pushing the baffle plate (27) to move is installed in the threaded hole (24). 9.根据权利要求8所述的一种离心转鼓式污水过滤回收装置，其特征在于，所述推动机构包括螺纹连接在螺纹孔(24)内的螺杆(25)，所述螺杆(25)与挡板(27)转动连接，所述螺杆(25)远离挡板(27)的一端固定连接有转轮(26)。9. A centrifugal drum type sewage filtration and recovery device according to claim 8, wherein the pushing mechanism comprises a screw (25) threaded in a threaded hole (24), and the screw (25) It is rotatably connected with the baffle plate (27), and a runner (26) is fixedly connected to one end of the screw rod (25) away from the baffle plate (27).
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