CN110078346B - Sludge centrifugal dehydration equipment and use method - Google Patents
Sludge centrifugal dehydration equipment and use method Download PDFInfo
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- CN110078346B CN110078346B CN201910400586.3A CN201910400586A CN110078346B CN 110078346 B CN110078346 B CN 110078346B CN 201910400586 A CN201910400586 A CN 201910400586A CN 110078346 B CN110078346 B CN 110078346B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/126—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using drum filters
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
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- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Centrifugal Separators (AREA)
Abstract
The invention discloses a sludge centrifugal dewatering device and a use method, wherein a water collecting barrel (3) is fixed on a machine seat (1), a motor (13) is arranged on one side of the machine seat (1), a control cabinet (14) is arranged on one side of the motor (13), the control cabinet (14) is connected with the motor (13) through an electric wire, a driving wheel (15) and a driving wheel (16) are arranged below the machine seat (1), the driving wheel (15) is positioned below the motor (13), a driving belt (17) is arranged between the driving wheel (15) and the driving wheel (16), and a transmission protective cover (18) is sleeved outside the driving belt (17); the method solves the problems that in the prior art, no special equipment for dewatering and drying treatment of the reservoir bottom dredging materials exists, and similar industrial sludge treatment equipment, centrifugal dryers and the like are not suitable for application in dewatering and drying treatment engineering of reservoir bottom dredging materials.
Description
Technical Field
The invention relates to the technical field of hydraulic construction, in particular to a sludge centrifugal dewatering device and a using method thereof.
Background
The number of reservoirs built in China is numerous, after decades of operation, sediment and sediment at the bottom of the reservoirs are continuously accumulated, the reservoirs are occupied, the reservoir capacity is increased, and the operation benefit of the reservoirs is reduced, so that the method is very necessary for dredging the bottom of the reservoirs, the remarkable benefit of recovering the reservoir capacity can be directly realized, meanwhile, the dredging materials are dried and utilized after dredging the bottom of the reservoirs, and the method has great economic benefit, but according to investigation, no special equipment for dredging and drying the bottom of the reservoirs is available at present, and similar industrial sludge treatment equipment such as a belt-type rolling mud-water separator is in industrial operation, so that the problems of complex equipment, huge scale, long treatment period, difficulty in moving and the like exist; the centrifugal drier is mainly used in light industries such as clothes washing and printing and dyeing processing, has the problems of discontinuous working procedures, small treatment capacity, incapability of automatically discharging and the like, and is not suitable for the application of reservoir bottom dredging and drying treatment engineering.
Disclosure of Invention
A first object of the present invention is to overcome the above-mentioned drawbacks of the prior art and to propose a sludge centrifugal dewatering device.
The first object of the present invention is achieved by the following technical solutions: the centrifugal sludge dewatering equipment comprises a machine base, a fixed ring, a water collecting barrel, an outer layer water filtering barrel, a middle layer geotechnical filter screen, an inner layer water filtering barrel, a balance ring, a top cover, a flange, an inlet pumping steel pipe, dredging materials, a lock catch, a motor, a control cabinet, a driving wheel, a driving belt, a driving protection cover, an electromagnetic clutch, a water filtering barrel rotating shaft, a lower connecting rod, an upper connecting rod, a spherical steel cover, a tray, a spiral scraper rotating shaft, a spiral scraper, a spiral connecting rod scraping blade, a discharge hole, a drain pipe, a drying material, a transfer container, a conveying belt machine, a charge car and a hollowed-out structure;
the water collecting barrel is fixed on the machine base, a motor is arranged on one side of the machine base, a control cabinet is arranged on one side of the motor, the control cabinet is connected with the motor through an electric wire, a driving wheel and a driving wheel are arranged below the machine base, the driving wheel is positioned below the motor, a driving belt is arranged between the driving wheel and the driving wheel, and a driving protection cover is sleeved outside the driving belt;
an outer layer filtering water barrel, a middle layer geotechnical filter screen and an inner layer filtering water barrel are sequentially arranged in the water collecting barrel from outside to inside;
a top cover is arranged above the water collecting barrel, the outer side of the top cover is fixed with the water collecting barrel through a plurality of lock catches, the middle of the top cover is communicated with an inlet pumping steel pipe arranged above the top cover, and the inlet pumping steel pipe is fixed with the top cover through a flange plate;
a balance ring is arranged on the inner side above the water collecting barrel along the circumferential direction, the balance ring is positioned above the tops of the outer layer water filtering barrel and the middle layer geotechnical filter screen, and a gap is reserved between the balance ring and the inner layer water filtering barrel;
the inner layer filtering water barrel is internally provided with a lower connecting rod and an upper connecting rod which are parallel to each other, one ends of the lower connecting rod and the upper connecting rod are connected with a filtering water barrel rotating shaft, and the other ends of the lower connecting rod and the upper connecting rod are connected with the side wall of the inner layer filtering water barrel;
a spiral scraper rotating shaft and a spiral scraper are arranged between the lower connecting rod and the upper connecting rod, the spiral scraper rotating shaft is provided with a spiral scraper which is composed of a plurality of spiral connecting rod scraping blades which are spirally arranged, and gaps are reserved between the adjacent spiral connecting rod scraping blades to form a hollow structure;
the top end of the spiral scraper rotating shaft is provided with a semicircular spherical steel cover, both ends of the spherical steel cover horizontally extend outwards to form the tray, the tray is positioned above the upper connecting rod, and the spherical steel cover and the upper connecting rod are fixed to form a whole;
the bottom end of the spiral scraper rotating shaft penetrates through the water filtering barrel rotating shaft and is connected with the electromagnetic clutch arranged at the lower end, and the electromagnetic clutch is positioned above the driving wheel.
In the technical scheme, the method comprises the following steps: a water filtering barrel rotating shaft is arranged between the lower connecting rod and the machine base, and the water filtering barrel rotating shaft is positioned at the outer side of the spiral scraper rotating shaft.
In the technical scheme, the method comprises the following steps: the bottom of the outer layer filtering bucket, the bottom of the middle layer geotechnical filter screen and the bottom of the inner layer filtering bucket are in an opening type, a transfer container is arranged below the inner layer filtering bucket, the transfer container is positioned on one side of the conveying belt conveyor, and the other side of the conveying belt conveyor is positioned above the charge car.
In the technical scheme, the method comprises the following steps: the drain pipe is positioned at the bottom of the water collecting barrel, and the drain pipe is positioned between the inner wall of the water collecting barrel and the outer layer water filtering barrel.
In the technical scheme, the method comprises the following steps: the bottom of the water collecting barrel is fixed on the machine base through a fixing ring.
A second object of the present invention is to overcome the above-mentioned drawbacks of the prior art and to propose a method for using a sludge centrifugal dewatering device.
The second object of the present invention is achieved by the following technical scheme: the application method of the sludge centrifugal dewatering equipment comprises the following steps of;
(1) the equipment is transported to a designated reservoir dredging treatment engineering site through an automobile, and the equipment can be operated and used after being installed in place and the power supply outside the control cabinet is connected;
(2) after the base is placed on an engineering site in advance and is in place, the water collecting barrel is fixed on the base through a fixing ring, the top cover is covered on the top of the water collecting barrel in advance, the outer side of the top cover is fixed with the water collecting barrel through a plurality of locks, the inlet pumping steel pipe is firmly connected with the top cover through a flange plate, and finally the transfer container and the conveying belt conveyor are installed below the base;
(3) operating equipment and use: the motor is controlled to be started and operated through the switch of the control cabinet, the motor drives the driving wheel to rotate, the driving wheel drives the driving wheel to rotate through the driving belt, the driving wheel is controlled by the electromagnetic clutch, the driving wheel drives the water filtering barrel rotating shaft and the spiral scraper rotating shaft to rotate, the water filtering barrel rotating shaft drives the lower connecting rod and the upper connecting rod arranged above to rotate, and then the lower connecting rod and the upper connecting rod drive the inner water filtering barrel, the middle geotechnical filter screen and the outer water filtering barrel to rotate, so that differential rotation of the inner water filtering barrel and the spiral scraper is realized;
(4) after the motor starts to run, adopting a pumping mode to convey the dredging material with higher water content to a tray arranged in the middle of the inner-layer filtering water bucket through an inlet pumping steel pipe;
(5) after the dredging material stays on the tray for a short time, the dredging material moves to the periphery of the inner layer filtering water barrel and realizes dehydration under the drive of centrifugal force, the water in the dredging material sequentially passes through the inner layer filtering water barrel, the middle layer geotechnical filter screen and the outer layer filtering water barrel, then is collected into the water collecting barrel and is continuously discharged through a drain pipe at the lower part of the water collecting barrel,
(6) the dried material with lower water content formed after the dredging material is dehydrated is remained in the inner layer filtering water barrel; at this time, the spiral scraper rotates with the inner layer filtering water bucket in a differential mode, the spiral scraper scrapes dewatered dredging materials, namely drying materials, away from the inner wall of the inner layer filtering water bucket, and at this time, under the dual use of gravity and centrifugal force, the drying materials penetrate through the space of a hollowed structure formed between scraping blade layers of the spiral scraper and between adjacent spiral connecting rod scraping blades and are discharged from a discharge hole arranged below the inner layer filtering water bucket, and after the drying materials fall into a transfer container, the drying materials are conveyed by a conveying belt conveyor and discharged into a charge car to be transported away, so that the whole sludge centrifugal dewatering treatment is completed.
In the technical scheme, the method comprises the following steps: the rotating speed of the rotating shaft of the water filtering barrel is not less than 400r/min.
The invention has the following advantages: 1. the invention drives the inner layer filtering water bucket and the spiral scraper to rotate in a differential speed manner through the motor, realizes automatic dewatering, drying and discharging of the dredging materials, has continuous working procedures and high degree of automation, and can be suitable for dredging engineering treatment of reservoirs.
2. The inner layer filter water barrel and the outer layer filter water barrel are in stainless steel filter screen type, the middle layer filter water barrel is a geotechnical filter screen, the inner layer filter water barrel can rotate along with the rotating shaft and drive the middle layer geotechnical filter screen and the outer layer filter water barrel to rotate, the water filtering process can be accelerated under the action of centrifugal force, and the sludge removal and drying can be realized through solid-water separation; the middle-layer geotechnical filter screen and the outer-layer filter bucket are detachable, so that replacement and maintenance are convenient, and the water filtering effect is ensured.
3. The water filtering device adopts a mode that the upper top cover is closed and the lower opening is formed, and the feeding is carried out in a pumping mode, so that the feeding efficiency is improved, the dredging material is prevented from splashing from the upper part in the centrifugal rotation process of the water filtering barrel, and the drying material is also convenient to automatically discharge from the lower opening.
4. The tray is arranged in the middle of the filter bucket, so that the pumped dredging materials fall in the filter bucket to be buffered, and the pumped dredging materials are dispersed and dehydrated to the inner wall of the filter bucket under the action of centrifugal force, so that the dehydration process is mainly finished at the upper part of the filter bucket, and the continuous operation of discharging at the upper part and the lower part is facilitated.
5. According to the invention, the hollow spiral scraper is adopted, the connecting rod scraping blade and the spiral scraper are driven to rotate through the middle rotating shaft, the spiral scraper scrapes the drying material at the periphery of the filtering water barrel, the connecting rod scraping blade scrapes the drying material at the middle part of the filtering water barrel, the drying material can be discharged through the space between the spiral layers, and the scraped drying material can be conveniently and rapidly discharged through the hollow space.
6. The invention arranges the water filtering device, the motor, the control cabinet and the like on the steel structure frame in a concentrated way, has compact equipment arrangement, simple structure and integrated functions, and is convenient to move and maintain.
7. The motor driving wheel, the driving wheel and the driving belt are arranged below the machine seat, so that the manual maintenance is convenient; the transmission protection cover is arranged to protect the driving wheel, the driving wheel and the driving belt, so that the transmission operation is prevented from being influenced during discharging, and the transmission structure is prevented from being damaged.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention.
Fig. 2 is a plan view of a spiral doctor blade according to the invention.
In the figure: the device comprises a machine base 1, a fixed ring 2, a water collecting barrel 3, an outer layer water filtering barrel 4, a middle layer geotechnical filter screen 5, an inner layer water filtering barrel 6, a balance ring 7, a top cover 8, a flange 9, an inlet pumping steel pipe 10, a dredging material 11, a lock catch 12, a motor 13, a control cabinet 14, a driving wheel 15, a driving wheel 16, a driving belt 17, a driving protection cover 18, an electromagnetic clutch 19, a water filtering barrel rotating shaft 20, a lower connecting rod 21, an upper connecting rod 22, a spherical steel cover 23, a tray 24, a spiral scraper rotating shaft 25, a spiral scraper 26, a spiral connecting rod scraping blade 27, a discharge hole 28, a drain pipe 29, a drying material 30, a transfer container 31, a conveying belt machine 32, a charge car 33 and a hollowed-out structure 34.
Detailed Description
The following detailed description of the invention, taken in conjunction with the accompanying drawings, is not to be taken as limiting the invention, but merely as exemplifications, and makes it easier and more obvious to understand the advantages of the invention.
Referring to fig. 1-2: the centrifugal sludge dewatering equipment comprises a machine base 1, a fixed ring 2, a water collecting barrel 3, an outer layer water filtering barrel 4, a middle layer geotechnical filter screen 5, an inner layer water filtering barrel 6, a balance ring 7, a top cover 8, a flange 9, an inlet pumping steel pipe 10, a dredging material 11, a lock catch 12, a motor 13, a control cabinet 14, a driving wheel 15, a driving wheel 16, a driving belt 17, a driving protection cover 18, an electromagnetic clutch 19, a water filtering barrel rotating shaft 20, a lower connecting rod 21, an upper connecting rod 22, a spherical steel cover 23, a tray 24, a spiral scraper rotating shaft 25, a spiral scraper 26, a spiral connecting rod scraping blade 27, a discharge hole 28, a drain pipe 29, a drying material 30, a transfer container 31, a conveying belt conveyor 32, a charge car 33 and a hollowed-out structure 34;
the water collection barrel 3 is fixed on the machine base 1, a motor 13 is arranged on one side of the machine base 1, a control cabinet 14 is arranged on one side of the motor 13, the control cabinet 14 is connected with the motor 13 through wires, a driving wheel 15 and a driving wheel 16 are arranged below the machine base 1, the driving wheel 15 is positioned below the motor 13, a driving belt 17 is arranged between the driving wheel 15 and the driving wheel 16, and a driving protection cover 18 is sleeved outside the driving belt 17;
an outer layer water filtering barrel 4, a middle layer geotechnical filter screen 5 and an inner layer water filtering barrel 6 are sequentially arranged in the water collecting barrel 3 from outside to inside;
a top cover 8 is arranged above the water collecting barrel 3, the outer side of the top cover 8 is fixed with the water collecting barrel 3 through a plurality of lock catches 12, the middle of the top cover 8 is communicated with an inlet pumping steel pipe 10 arranged above, and the inlet pumping steel pipe 10 is fixed with the top cover 8 through a flange 9;
the inner side periphery above the water collecting barrel 3 is provided with a balance ring 7, the balance ring 7 is positioned above the tops of the outer layer water filtering barrel 4 and the middle layer geotechnical filter screen 5, the balance ring 7 is of an annular structure made of plastic materials such as ABS materials, the outer side of the balance ring 7 is fixed on the water collecting barrel 3, a gap with the width of 1-5 mm is reserved between the balance ring 7 and the inner layer water filtering barrel 6, and the balance ring 7 is used for limiting the inner layer water filtering barrel 6 to ensure the rotation stability of the inner layer water filtering barrel 6;
a lower connecting rod 21 and an upper connecting rod 22 are arranged in the inner layer filtering water barrel 6,
one end of the lower connecting rod 21 and one end of the upper connecting rod 22 are connected with the water filtering barrel rotating shaft 20, and the other end of the lower connecting rod is connected with the side wall of the inner water filtering barrel 6;
the lower connecting rod 21 and the upper connecting rod 22 are all composed of a plurality of steel connecting rods.
The motor 13 drives the driving wheel 15 to rotate, the driving wheel 15 drives the driving wheel 16 to rotate through the driving belt 17, the driving wheel 16 drives the water filtering barrel rotating shaft 20 to rotate, and then the water filtering barrel rotating shaft 20 drives the lower connecting rod 21 and the upper connecting rod 22 which are arranged above to rotate;
a spiral scraper 26 and a spiral scraper rotating shaft 25 are arranged between the lower connecting rod 21 and the upper connecting rod 22, the spiral scraper 26 is positioned on the spiral scraper rotating shaft 25, the spiral scraper rotating shaft 25 drives the spiral scraper 26 to rotate, and the spiral scraper 26 rotates to scrape the drying material 30 positioned on the inner side of the inner layer water filtering barrel 6;
the top end of the spiral scraper rotating shaft 25 is provided with a semicircular spherical steel cover 23, and the spherical steel cover 23 is welded with the upper connecting rod 22 and forms a whole;
the bottom end of the spiral scraper rotating shaft 25 passes through the water filtering barrel rotating shaft 20 and is connected with the electromagnetic clutch 19 arranged at the lower end, and the electromagnetic clutch 19 is positioned above the driving wheel 16;
a water filtering barrel rotating shaft 20 is arranged between the lower connecting rod 21 and the machine base 1, and the water filtering barrel rotating shaft 20 is positioned at the outer side of the spiral scraper rotating shaft 25.
The bottoms of the outer layer filtering water bucket 4, the middle layer geotechnical filter screen 5 and the inner layer filtering water bucket 6 are in an opening type, a transfer container 31 is arranged below the inner layer filtering water bucket 6, the transfer container 31 is positioned on one side of the conveying belt conveyor 32, and the other side of the conveying belt conveyor 32 is positioned above the charge car 33;
the drain pipe 29 is positioned at the bottom of the water collecting barrel 3, and the drain pipe 29 is positioned between the inner wall of the water collecting barrel 3 and the outer layer water filtering barrel 4.
The spiral scraper 26 is composed of a plurality of spiral connecting rod scraping blades 27 which are spirally arranged, and gaps between adjacent spiral connecting rod scraping blades 27 are hollow structures 34.
The invention relates to a method for using a sludge centrifugal dewatering device, which comprises the following steps of;
(1) the equipment can be transported to a designated reservoir dredging treatment engineering site through an automobile, and can be operated and used after being installed in place and the control cabinet 14 is connected with an external power supply;
(2) when the equipment is installed, firstly, a base 1 is positioned, a water collecting barrel 3 is fixed on the base 1 through a fixing ring 2, a top cover 8 is covered on the top of the water collecting barrel 3, the periphery of the top cover 8 is fixed with the water collecting barrel 3 through a lock catch 12, an inlet pumping steel pipe 10 is firmly connected with the top cover 8 through a flange 9, and then a transfer container 31 and a conveying belt conveyor 32 are installed below the equipment;
(3) when the invention is used in operation, the motor 13 is controlled to be started and operated by the switch of the control cabinet 14, the motor 13 drives the driving wheel 15 to rotate, the driving wheel 15 drives the driving wheel 16 to rotate by the driving belt 17, the driving wheel 16 controls and drives the water filtering barrel rotating shaft 20 and the spiral scraper rotating shaft 25 to rotate by the electromagnetic clutch 19, the rotating speed of the water filtering barrel rotating shaft 20 is not less than 400r/min, and the water filtering barrel rotating shaft 20 drives the lower connecting rod 21 and the upper connecting rod 22 which are arranged above to rotate, so that the inner water filtering barrel 6, the middle geotechnical filter screen 5 and the outer water filtering barrel 4 are driven to rotate, and differential rotation of the inner water filtering barrel 6 and the spiral scraper 26 is realized.
(4) After the motor 13 of the equipment starts to run, the dredging material 11 is conveyed to the middle tray 24 of the inner layer filtering water bucket 6 through the inlet pumping steel pipe 10 in a pumping mode. After the dredging material 11 stays on the tray 24 for a short time, the dredging material is driven by centrifugal force to move towards the periphery of the inner layer filtering water bucket 6 and achieve dehydration, water passes through the inner layer filtering water bucket 6, the middle layer geotechnical filter screen 5 and the outer layer filtering water bucket 4 and then is collected into the water collecting bucket 3, the water is continuously discharged through a drain pipe 29 at the lower part of the water collecting bucket 3, and a drying material 30 formed after the dredging material 11 is dehydrated is remained in the inner layer filtering water bucket 6. The spiral scraper 26 in the barrel scrapes the dewatered dredging material, namely the drying material 30, from the inner wall of the inner layer filtering water barrel 6 through differential rotation with the inner layer filtering water barrel 6, and under the dual use of gravity and centrifugal force, the drying material 30 passes through the space of a hollow structure 34 formed between the scraping blade layers of the spiral scraper 26 and between the adjacent spiral connecting rod scraping blades 27, is discharged from a discharge hole 28 arranged below the inner layer filtering water barrel 6, and after falling into a transfer container 31, the drying material 30 is conveyed by a conveying belt conveyor 32, discharged into a charge car 33 and is transported away, so that the centrifugal dewatering treatment of sludge is completed.
As shown in fig. 1, the invention relates to a technology and equipment for centrifugal dewatering of sludge and a using method thereof,
the inner layer water filtering barrel 6 and the spiral scraper 26 are driven to rotate in a differential speed through the motor 13, the water collecting barrel 3 is arranged outside the inner layer water filtering barrel 6, the dredging material 11 is dehydrated and dried through multi-layer water filtering of the inner layer water filtering barrel 6 under the action of high-speed rotating centrifugal force, the drying material 30 is separated from the inner layer water filtering barrel 6 under the action of shearing force generated by rotation of the spiral scraper 26, and the drying material is discharged from the discharge hole 28 below the device under the action of dead weight, so that automatic dehydration and drying and discharging of the dredging material 11 are realized.
The lower part of the device is provided with a stand 1 made of a steel structure, the stand 1 is firmly and reliably when equipment stops or operates, an inner-layer water filtering barrel 6, a motor 13 and a control cabinet 14 are mainly arranged on the stand 1, the equipment needs external power supply, a wire is connected between the control cabinet 14 and the motor 13, the motor 13 is controlled to be started and operated by switching on and off the control cabinet 14, the motor 13 drives a driving wheel 16 below the inner-layer water filtering barrel 6 to rotate through a driving belt 17 below the stand 1, an electromagnetic clutch 19 is arranged on the driving wheel 16, and differential rotation of the inner-layer water filtering barrel 6 and a spiral scraper 26 is realized by respectively driving a water filtering barrel rotating shaft 20 and a spiral scraper rotating shaft 25. The inner layer water filtering barrel 6 is provided with three water filtering layers, the inner layer water filtering barrel 6 and the outer layer water filtering barrel 4 are of stainless steel filter screen type, and the middle layer geotechnical filter screen 5 is made of high polymer to form a net-shaped geotechnical material.
The inner layer filter bucket 6 is connected with the filter bucket rotating shaft 20 through an upper connecting rod 22 and a lower connecting rod 21, and the middle layer geotechnical filter screen 5 and the outer layer filter bucket 4 can be detached and replaced.
The outside of the outer layer filtering water bucket 4 is provided with a water collecting bucket 3, and the dredging material 11 is continuously discharged through a drain pipe 29 at the lower part of the water collecting bucket 3 after being dehydrated and thrown into the water collecting bucket 3 through the inner layer filtering water bucket 6. The upper part of the water collecting barrel 3 is sealed by a top cover 8, the periphery of the top cover 8 is fixed with the water collecting barrel 3 through a lock catch 12, an inlet pumping steel pipe 10 and a flange 9 thereof are arranged in the middle of the top cover 8, and a pumping mode is adopted to convey dredging materials 11 to a middle tray 24 of the inner layer water filtering barrel 6 through the inlet pumping steel pipe 10. After the dredging material 11 stays on the tray 24 for a short time, the dredging material is driven by centrifugal force to move towards the periphery of the inner layer filtering water barrel 6 and achieve dehydration. The spiral scraper 26 in the barrel scrapes the dewatered dredging material, namely the drying material 30, from the inner wall of the inner layer filtering water barrel 6 through differential rotation with the inner layer filtering water barrel 6, and under the dual use of gravity and centrifugal force, the drying material 30 passes through the space of a hollowed-out structure 34 formed between the scraping blade layers of the spiral scraper 26 and between the adjacent spiral connecting rod scraping blades 27, is discharged from a discharge hole 28 arranged below the inner layer filtering water barrel 6, and after falling into a transfer container 31, the drying material 30 is conveyed by a conveying belt conveyor 32 and discharged into a charge car 33 for transportation.
The parts not described in detail above are all prior art.
Claims (7)
1. A sludge centrifugal dewatering device, which is characterized in that: the device comprises a base (1), a fixed ring (2), a water collecting bucket (3), an outer layer water filtering bucket (4), a middle layer geotechnical filter screen (5), an inner layer water filtering bucket (6), a balance ring (7), a top cover (8), a flange plate (9), an inlet pumping steel pipe (10), dredging materials (11), a lock catch (12), a motor (13), a control cabinet (14), a driving wheel (15), a driving wheel (16), a driving belt (17), a driving protection cover (18), an electromagnetic clutch (19), a water filtering bucket rotating shaft (20), a lower connecting rod (21), an upper connecting rod (22), a spherical steel cover (23), a tray (24), a spiral scraper rotating shaft (25), a spiral scraper (26), a spiral connecting rod scraping blade (27), a discharge hole (28), a discharge pipe (29), a drying material (30), a transfer container (31), a conveying belt machine (32), a charging car (33) and a hollow structure (34);
the water collection barrel (3) is fixed on the machine base (1), a motor (13) is arranged on one side of the machine base (1), a control cabinet (14) is arranged on one side of the motor (13), the control cabinet (14) is connected with the motor (13) through wires, a driving wheel (15) and a driving wheel (16) are arranged below the machine base (1), the driving wheel (15) is located below the motor (13), a driving belt (17) is arranged between the driving wheel (15) and the driving wheel (16), and a transmission protection cover (18) is sleeved outside the driving belt (17).
An outer layer filtering water barrel (4), a middle layer geotechnical filter screen (5) and an inner layer filtering water barrel (6) are sequentially arranged in the water collecting barrel (3) from outside to inside;
a top cover (8) is arranged above the water collection barrel (3), the outer side of the top cover (8) is fixed with the water collection barrel (3) through a plurality of lock catches (12), the middle of the top cover (8) is communicated with an inlet pumping steel pipe (10) arranged above, and the inlet pumping steel pipe (10) is fixed with the top cover (8) through a flange plate (9);
a balancing ring (7) is arranged on the inner side above the water collecting barrel (3) along the circumferential direction, the balancing ring (7) is positioned above the tops of the outer layer water filtering barrel (4) and the middle layer geotechnical filter screen (5), and a gap is reserved between the balancing ring (7) and the inner layer water filtering barrel (6);
a lower connecting rod (21) and an upper connecting rod (22) which are parallel to each other are arranged in the inner layer filtering barrel (6), one ends of the lower connecting rod (21) and the upper connecting rod (22) are connected with the filtering barrel rotating shaft (20), and the other ends are connected with the side wall of the inner layer filtering barrel (6);
a spiral scraper rotating shaft (25) and a spiral scraper (26) are arranged between the lower connecting rod (21) and the upper connecting rod (22), the spiral scraper rotating shaft (25) is provided with a spiral scraper (26) which is in a spiral shape, the spiral scraper (26) is composed of a plurality of spiral connecting rod scraping blades (27) which are in a spiral shape, and gaps between the adjacent spiral connecting rod scraping blades (27) are in a hollow structure (34);
the top end of the spiral scraper rotating shaft (25) is provided with a semicircular spherical steel cover (23), two ends of the spherical steel cover (23) horizontally extend outwards to form a tray (24), the tray (24) is positioned above the upper connecting rod (22), and the spherical steel cover (23) and the upper connecting rod (22) are fixed and form a whole;
the bottom end of the spiral scraper rotating shaft (25) passes through the water filtering barrel rotating shaft (20) and is connected with the electromagnetic clutch (19) arranged at the lower end, and the electromagnetic clutch (19) is positioned above the driving wheel (16).
2. A sludge centrifugal dewatering apparatus according to claim 1, wherein: a water filtering barrel rotating shaft (20) is arranged between the lower connecting rod (21) and the machine base (1), and the water filtering barrel rotating shaft (20) is positioned at the outer side of the spiral scraper rotating shaft (25).
3. A sludge centrifugal dewatering apparatus as claimed in claim 1 or 2, wherein: the bottom of the outer layer filtering water bucket (4), the bottom of the middle layer geotechnical filter screen (5) and the bottom of the inner layer filtering water bucket (6) are in an opening type, a transfer container (31) is arranged below the inner layer filtering water bucket (6), the transfer container (31) is positioned on one side of the conveying belt conveyor (32), and the other side of the conveying belt conveyor (32) is positioned above the charge car (33).
4. A sludge centrifugal dewatering apparatus as claimed in claim 3, wherein: the drain pipe (29) is positioned at the bottom of the water collecting barrel (3), and the drain pipe (29) is positioned between the inner wall of the water collecting barrel (3) and the outer layer water filtering barrel (4).
5. A sludge centrifugal dewatering apparatus according to claim 4, wherein: the bottom of the water collecting barrel (3) is fixed on the machine base (1) through a fixing ring (2).
6. A method of using a sludge centrifugal dewatering apparatus according to any of claims 1-5, characterized in that: it comprises the following steps of;
(1) the equipment is transported to a designated reservoir dredging treatment engineering site through an automobile, and the equipment can be operated and used after being installed in place and the external power supply of the control cabinet (14) is connected;
(2) after the base (1) is placed on an engineering site in advance and is in place, the water collecting barrel (3) is fixed on the base (1) through the fixing ring (2), the top cover (8) is covered on the top of the water collecting barrel (3) in advance, the outer side of the top cover (8) is fixed with the water collecting barrel (3) through a plurality of lock catches (12), the inlet pumping steel pipe (10) is firmly connected with the top cover (8) through the flange plate (9), and finally the transfer container (31) and the conveying belt conveyor (32) are installed below the base (1);
(3) operating equipment and use: the motor (13) is controlled to be started and operated through a switch of the control cabinet (14), the motor (13) drives the driving wheel (15) to rotate, the driving wheel (15) drives the driving wheel (16) to rotate through the driving belt (17), the driving wheel (16) is controlled by the electromagnetic clutch (19), the driving wheel (16) drives the water filtering barrel rotating shaft (20) and the spiral scraper rotating shaft (25) to rotate, the water filtering barrel rotating shaft (20) drives the lower connecting rod (21) and the upper connecting rod (22) which are arranged above to rotate, and then the lower connecting rod (21) and the upper connecting rod (22) drive the inner water filtering barrel (6), the middle-layer geotechnical filter screen (5) and the outer water filtering barrel (4) to rotate, so that differential rotation of the inner water filtering barrel (6) and the spiral scraper (26) is realized;
(4) after the motor (13) is started to run, conveying the dredging material (11) with higher water content to a tray (24) arranged in the middle of the inner-layer filtering water bucket (6) through an inlet pumping steel pipe (10) in a pumping mode;
(5) after the dredging material (11) stays on the tray (24) for a short time, the dredging material (11) moves towards the periphery of the inner layer filtering water barrel (6) and is dehydrated under the drive of centrifugal force, and water in the dredging material (11) sequentially passes through the inner layer filtering water barrel (6), the middle layer geotechnical filter screen (5) and the outer layer filtering water barrel (4) and then is collected into the water collecting barrel (3) and is continuously discharged through a drain pipe (29) at the lower part of the water collecting barrel (3);
(6) the dried material (30) with lower water content formed after the desilting material (11) is dehydrated is left in the inner layer filtering water barrel (6); at this time, the spiral scraper (26) rotates with the inner layer filtering water bucket (6) in a differential mode, the spiral scraper (26) scrapes the dewatered dredging material (11), namely the drying material (30), away from the inner wall of the inner layer filtering water bucket (6), and at this time, under the dual use of gravity and centrifugal force, the drying material (30) passes through the space of a hollowed structure (34) formed between the scraping layers of the spiral scraper (26) and between adjacent spiral connecting rod scraping blades (27) and is discharged from a discharge hole (28) arranged below the inner layer filtering water bucket (6), and after the drying material (30) falls into a transfer container (31), the drying material (30) is conveyed by a conveying belt machine (32) and discharged into a charge car (33) to be transported, so that the whole sludge centrifugal dewatering treatment is completed.
7. The method for using the sludge centrifugal dewatering equipment according to claim 6, wherein: the rotating speed of the water filtering barrel rotating shaft (20) is not less than 400r/min.
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