CN111236411A - Centrifugal separation type sewage circulating filtration system and filtration method - Google Patents
Centrifugal separation type sewage circulating filtration system and filtration method Download PDFInfo
- Publication number
- CN111236411A CN111236411A CN202010151803.2A CN202010151803A CN111236411A CN 111236411 A CN111236411 A CN 111236411A CN 202010151803 A CN202010151803 A CN 202010151803A CN 111236411 A CN111236411 A CN 111236411A
- Authority
- CN
- China
- Prior art keywords
- sewage
- liquid separation
- separation device
- solid
- electric control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010865 sewage Substances 0.000 title claims abstract description 150
- 238000000926 separation method Methods 0.000 title claims abstract description 122
- 238000001914 filtration Methods 0.000 title claims abstract description 73
- 238000000034 method Methods 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 128
- 239000007788 liquid Substances 0.000 claims description 112
- 238000011010 flushing procedure Methods 0.000 claims description 19
- 238000007790 scraping Methods 0.000 claims description 13
- 238000011001 backwashing Methods 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 5
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 5
- 241001330002 Bambuseae Species 0.000 claims description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 5
- 239000011425 bamboo Substances 0.000 claims description 5
- 230000008676 import Effects 0.000 claims description 3
- 239000012535 impurity Substances 0.000 abstract description 5
- 238000004064 recycling Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000003657 drainage water Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- -1 silt Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
- E03F7/10—Wheeled apparatus for emptying sewers or cesspools
-
- 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
- B01D33/073—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for inward 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
- B01D33/35—Filters with filtering elements which move during the filtering operation with multiple filtering elements characterised by their mutual disposition
- B01D33/41—Filters with filtering elements which move during the filtering operation with multiple filtering elements characterised by their mutual disposition in series connection
-
- 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
- B01D33/466—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element scrapers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
- B01D35/143—Filter condition indicators
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
- E03F7/10—Wheeled apparatus for emptying sewers or cesspools
- E03F7/103—Wheeled apparatus for emptying sewers or cesspools with a tank featuring one or more partition walls
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
- E03F7/10—Wheeled apparatus for emptying sewers or cesspools
- E03F7/106—Accessories, e.g. hose support
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F9/00—Arrangements or fixed installations methods or devices for cleaning or clearing sewer pipes, e.g. by flushing
- E03F9/007—Devices providing a flushing surge
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Centrifugal Separators (AREA)
Abstract
The invention discloses a centrifugal separation type sewage circulating and filtering system and a filtering method. This centrifugal separation formula sewage circulating and filtering system can effectively separate the impurity in the sewage, but circulating filtration sewage to can wash effectively automatically when taking place to block up, control system is stable, maintains simple and conveniently, can reach that the filter screen exempts from to wash, difficult jam damaged purpose, and filtration efficiency is high, with low costs, has fine in-service use value and application prospect.
Description
Technical Field
The invention relates to the technical field of sewage filtration, in particular to a centrifugal separation type sewage circulating filtration system and a filtration method.
Background
With the development of society and the increase of population, the consumption of natural resources is increasing, so is the water resource as the source of life, and the reuse of sewage is becoming more and more urgent while advocating water resource saving. Particularly, for the cleaning equipment, a sewage circulating and filtering system is required to be provided for recycling sewage, however, most of the equipment in the market at present adopts a pure filter screen to carry out layer-by-layer filtering, and the method is really feasible, but the problems that the filter screen is easy to block, difficult to clean, easy to damage and the like exist, so that the filtering efficiency is low and the cost is high.
Disclosure of Invention
The invention aims to provide a centrifugal separation type sewage circulating and filtering system and a filtering method which have high filtering efficiency, low cost and good practical use value and application prospect.
In order to achieve the purpose, the invention adopts the following technical scheme:
the centrifugal separation type sewage circulating and filtering system comprises a sewage tank, a primary solid-liquid separation device, a secondary solid-liquid separation device, a clear water tank, a working device, a reverse flushing device and a controller;
the sewage tank is used for storing sewage, the interior of the sewage tank is separated by the coarse strainer to form an upper-layer space and a lower-layer space, and the sewage is stored in the upper-layer space when being sent into the sewage tank and enters the lower-layer space after being filtered by the coarse strainer;
the water outlet of the sewage tank is connected to the sewage inlet of the primary solid-liquid separation device through a sewage pump, the sewage outlet of the primary solid-liquid separation device is connected to the water inlet of the sewage tank through a first electric control valve, the filtered water outlet of the primary solid-liquid separation device is connected to the sewage inlet of the secondary solid-liquid separation device, the sewage outlet of the secondary solid-liquid separation device is connected to the water inlet of the sewage tank through a second electric control valve, and the filtered water outlet of the secondary solid-liquid separation device is connected to the water inlet of the cleaning water tank through a third electric control;
the water outlet of the clean water tank is connected to the water inlet of the working device, and the flushing water outlet of the clean water tank is connected to the filtered water outlet of the secondary solid-liquid separation device through the reverse flushing device;
the primary solid-liquid separation device and the secondary solid-liquid separation device are respectively provided with a pressure sensor, and each pressure sensor respectively collects the water pressure in the primary solid-liquid separation device and the secondary solid-liquid separation device and feeds the water pressure back to the controller;
a liquid level meter is arranged in the sewage tank and continuously feeds back the liquid level height in the sewage tank to the controller;
the first-stage solid-liquid separation device, the second-stage solid-liquid separation device, the sewage pump, the working device, the reverse flushing device, the first electric control valve, the second electric control valve and the third electric control valve are respectively and electrically connected to the controller.
Furthermore, the first-stage solid-liquid separation device comprises a first cylinder, a first bottom plate, a first cover plate, an accelerating impeller, a coarse filter cylinder, a first filter cylinder connecting rod, a first bearing seat and a first motor, sealing measures such as sealant are adopted between parts, fastening pieces (the following parts connected by bolts are not explained) are adopted for firm connection, and the connection mode is as follows: the upper end of the first cylinder is connected with a first cover plate, the lower end of the first cylinder is connected with a first bottom plate, a hole site is formed in the middle of the first cover plate and is fixedly connected with a first bearing seat, the upper end of the first bearing seat is fixedly connected with a shell of a first motor, the upper end of a rotating shaft of the first bearing seat is fixedly connected with an output shaft of the first motor through a flat key, the lower end of the first bearing seat extends into the bottom of the first cover plate, and the lower end of the rotating shaft of the first bearing seat is fixedly connected with an accelerating impeller through a flat key; the first motor, the first bearing seat and the accelerating impeller are rigidly connected with an output shaft of the first motor, when the first motor works, a shaft of the first motor can drive the accelerating impeller to rotate, and a larger gap exists between the accelerating impeller and the first cylinder. The coarse filter cylinder is fixed above the first bottom plate through a first filter cylinder connecting rod, and is nested inside the accelerating impeller, and a gap is reserved between the coarse filter cylinder and the accelerating impeller; the upper portion of first barrel side is provided with the sewage import, and the lower part of first barrel side is provided with the sewage export, sets up the drainage outlet on the first bottom plate, drainage outlet and the inside intercommunication of rough filtration section of thick bamboo.
The secondary solid-liquid separation device comprises a second cylinder, a second bottom plate, a second cover plate, a scraping wheel, a fine filtering cylinder, a second filtering cylinder connecting rod, a second bearing seat and a second motor, wherein the upper end of the second cylinder is connected with the second cover plate, the lower end of the second cylinder is connected with the second bottom plate, a hole is formed in the middle of the second cover plate and fixedly connected with the second bearing seat, the upper end of the second bearing seat is fixedly connected with a shell of the second motor, the upper end of a rotating shaft of the second bearing seat is fixedly connected with an output shaft of the second motor through a flat key, the lower end of the second bearing seat extends into the bottom of the second cover plate, the lower end of the rotating shaft of the second bearing seat is fixedly connected with the scraping wheel through a flat key, the fine filtering cylinder is fixed above the second bottom plate through the second filtering cylinder connecting rod, the fine filtering cylinder is nested in the scraping wheel, the scraping blade of the scraping wheel is tightly attached to the outer surface of the fine filtering cylinder, a forward inclination angle α smaller than 90 degrees is formed in the clockwise rotation direction, a sewage inlet is formed in the upper portion of the side surface of.
Furthermore, the back flushing device is a low-pressure water pump.
Further, the sewage pump is a cam pump.
The filtering method of the centrifugal separation type sewage circulating and filtering system comprises the following steps:
1) when the controller detects that the clear water tank has enough clear water through the liquid level meter, the controller instructs the working device to operate so as to ensure that the working device does not run idle due to water shortage, the working device operates by taking the clear water as a medium and generates sewage, and the sewage is conveyed to the sewage tank by a pump body in the working device to be stored;
2) when the controller detects that the sewage in the sewage tank reaches a preset amount, the controller instructs the sewage pump to start to dredge the sewage, instructs the primary solid-liquid separation device and the secondary solid-liquid separation device to start, operates according to a preset rotating speed, and instructs the first electric control valve, the second electric control valve and the third electric control valve to start, at the moment, the sewage enters the primary solid-liquid separation device after being pressurized by the sewage pump to carry out centrifugal separation and filtration, the controller monitors the water pressure in the primary solid-liquid separation device in real time through the pressure sensor, when the internal water pressure is smaller than a preset pressure range, the controller instructs the first electric control valve to close, gradually reduces the opening, stops acting when the water pressure meets the requirement, and otherwise, increases the opening;
3) the coarse filtered water filtered by the primary solid-liquid separation device enters a secondary solid-liquid separation device for fine filtration, clear water obtained after fine filtration enters a clear water tank for storage, and similarly, a controller monitors the water pressure in the secondary solid-liquid separation device in real time through a pressure sensor, and at the moment, the opening degree of a second electric control valve can be adjusted manually according to the water outlet condition so as to ensure the filtering flow of the primary solid-liquid separation device;
4) when the water pressure in any one of the first-stage solid-liquid separation device and the second-stage solid-liquid separation device automatically rises to the upper limit, starting the backwashing device, closing the second electric control valve and the third electric control valve, completely opening the first electric control valve, and simultaneously starting the backwashing device to perform backwashing on the coarse filter cylinder and the fine filter cylinder until the water pressure in the first-stage solid-liquid separation device and the water pressure in the second-stage solid-liquid separation device are respectively lower than preset pressure values; or the first electric control valve and the third electric control ball valve are closed, the second electric control valve is completely opened, and only the secondary solid-liquid separation device is cleaned;
5) and after the back flushing is finished, restarting the filtering program, and repeating the process until the clear water tank reaches the upper limit of the liquid level.
By adopting the technical scheme, the invention has the following beneficial effects: this centrifugal separation formula sewage circulating and filtering system can effectively separate the impurity in the sewage, but circulating filtration sewage to can wash effectively automatically when taking place to block up, control system is stable, maintains simple and conveniently, can reach that the filter screen exempts from to wash, difficult jam damaged purpose, and filtration efficiency is high, with low costs, has fine in-service use value and application prospect.
Drawings
The invention is described in further detail below with reference to the accompanying drawings and the detailed description;
FIG. 1 is an overall block diagram of a centrifugal separation type sewage circulating and filtering system of the present invention;
FIG. 2 is a perspective view of a primary solid-liquid separation device;
FIG. 3 is a sectional view of a first stage solid-liquid separation device;
FIG. 4 is a perspective view of a two-stage solid-liquid separation device;
FIG. 5 is a cross-sectional view of a two-stage solid-liquid separation device;
FIG. 6 is a schematic view of an embodiment of the present invention applied to a sewage circulating and filtering system of a dredger.
Detailed Description
As shown in fig. 1, the centrifugal separation type sewage circulating and filtering system of the present invention comprises a sewage tank, a primary solid-liquid separation device, a secondary solid-liquid separation device, a clean water tank, a working device, a back flushing device and a controller;
the sewage tank is used for storing sewage, the interior of the sewage tank is separated by the coarse strainer to form an upper-layer space and a lower-layer space, and the sewage is stored in the upper-layer space when being sent into the sewage tank and enters the lower-layer space after being filtered by the coarse strainer;
the water outlet of the sewage tank is connected to the sewage inlet of the primary solid-liquid separation device through a sewage pump, the sewage outlet of the primary solid-liquid separation device is connected to the water inlet of the sewage tank through a first electric control valve, the filtered water outlet of the primary solid-liquid separation device is connected to the sewage inlet of the secondary solid-liquid separation device, the sewage outlet of the secondary solid-liquid separation device is connected to the water inlet of the sewage tank through a second electric control valve, and the filtered water outlet of the secondary solid-liquid separation device is connected to the water inlet of the cleaning water tank through a third electric control;
the water outlet of the clean water tank is connected to the water inlet of the working device, and the flushing water outlet of the clean water tank is connected to the filtered water outlet of the secondary solid-liquid separation device through the reverse flushing device;
the working device can be a high-pressure water pump or other working devices taking clear water as a medium, sewage is produced after operation, and the sewage can carry impurities such as silt, garbage fragments, grease and the like;
the primary solid-liquid separation device and the secondary solid-liquid separation device are respectively provided with a pressure sensor, and each pressure sensor respectively collects the water pressure in the primary solid-liquid separation device and the secondary solid-liquid separation device and feeds the water pressure back to the controller;
a liquid level meter is arranged in the sewage tank and continuously feeds back the liquid level height in the sewage tank to the controller;
the first-stage solid-liquid separation device, the second-stage solid-liquid separation device, the sewage pump, the working device, the reverse flushing device, the first electric control valve, the second electric control valve and the third electric control valve are respectively and electrically connected to the controller.
As shown in fig. 2 and fig. 3, the primary solid-liquid separation device includes a first cylinder 2, a first bottom plate 1, a first cover plate 6, an accelerating impeller 5, a coarse filter cylinder 4, a first filter cylinder connecting rod 3, a first bearing seat 7 and a first motor 8, sealing measures such as sealant are adopted between components, and fastening pieces (hereinafter, the connection places of the bolts are not described) are adopted for firm connection, and the connection mode is as follows: the upper end of the first cylinder 2 is connected with a first cover plate 6, the lower end of the first cylinder 2 is connected with a first bottom plate 1, a hole position is formed in the middle of the first cover plate 6 and is fixedly connected with a first bearing seat 7, the upper end of the first bearing seat 7 is fixedly connected with a shell of a first motor 8, the upper end of a rotating shaft of the first bearing seat 7 is fixedly connected with an output shaft of the first motor 8 through a flat key, the lower end of the first bearing seat 7 extends into the bottom of the first cover plate 6, and the lower end of the rotating shaft of the first bearing seat 7 is fixedly connected with an accelerating impeller 5 through a flat key; here, between the first motor 8, the first bearing seat 7 and the accelerating impeller 5, it is finally achieved that the accelerating impeller 5 is rigidly connected with the output shaft of the first motor 8, when the first motor 8 works, the shaft thereof can drive the accelerating impeller 5 to rotate, and a large gap exists between the accelerating impeller 5 and the first cylinder 2. The coarse filter cylinder 4 is fixed above the first bottom plate 1 through a first filter cylinder connecting rod 3, and the coarse filter cylinder 4 is nested inside the accelerating impeller 5 and has a gap with the accelerating impeller 5; the upper portion of the side of the first cylinder body 2 is provided with a sewage inlet 9, the lower portion of the side of the first cylinder body 2 is provided with a sewage outlet 10, the first bottom plate 1 is provided with a filtered water outlet 11, and the filtered water outlet 11 is communicated with the interior of the coarse filtering cylinder 4. During operation, sewage pump is gone into the sewage of certain pressure from sewage import 9 pump to filter to inside the coarse filtration section of thick bamboo 4, herein simultaneously, first motor 8 drives impeller 5 high-speed rotation with higher speed, accelerates to high-speed rotatory sewage, causes the great impurity of density that smugglies wherein to get rid of to the periphery because of centrifugal force, then leans on self gravity to remove downwards to the sewage export along section of thick bamboo wall, drains back the sewage jar, thereby avoids impurity flow direction coarse filtration section of thick bamboo 4 and produces the jam, water after the filtration flows to second grade solid-liquid separation equipment from bottom drainage water outlet.
As shown in figures 4 and 5, the overall structure of the secondary solid-liquid separation device is similar to that of the primary solid-liquid separation device, except that the original accelerating impeller is replaced by a scraping blade wheel 12, the coarse filter cylinder is replaced by a fine filter cylinder 13, the scraping blade of the scraping blade wheel 12 is tightly attached to the outer surface of the fine filter cylinder, and a front rake α smaller than 90 degrees is formed in the clockwise rotation direction, when the secondary solid-liquid separation device works, the second motor rotates at a low speed to scrape the particles adhered to the outer surface of the fine filter cylinder 13, the particles embedded in the filter holes of the fine filter cylinder 13 are pressed into the fine filter cylinder 13 through water pressure, the front rake of the scraping blade is beneficial to extruding higher-concentration sewage generated by filtering downwards and concentrating at a sewage outlet to bring the just-entered filtered water downwards to the periphery of the fine filter cylinder for filtering, and the filtered clean water flows to a clean water tank through a bottom filtered water outlet.
In the invention, the back flushing device is a low-pressure water pump, and the sewage pump is a cam pump.
The filtering method of the centrifugal separation type sewage circulating and filtering system comprises the following steps:
1) when the controller detects that the clear water tank has enough clear water through the liquid level meter, the controller instructs the working device to operate so as to ensure that the working device does not run idle due to water shortage, the working device operates by taking the clear water as a medium and generates sewage, and the sewage is conveyed to the sewage tank by a pump body in the working device to be stored;
2) when the controller detects that the sewage in the sewage tank reaches a preset amount, the controller instructs the sewage pump to start to dredge the sewage, instructs the primary solid-liquid separation device and the secondary solid-liquid separation device to start, operates according to a preset rotating speed, and instructs the first electric control valve, the second electric control valve and the third electric control valve to start, at the moment, the sewage enters the primary solid-liquid separation device after being pressurized by the sewage pump to carry out centrifugal separation and filtration, the controller monitors the water pressure in the primary solid-liquid separation device in real time through the pressure sensor, when the internal water pressure is smaller than a preset pressure range, the controller instructs the first electric control valve to close, gradually reduces the opening, stops acting when the water pressure meets the requirement, and otherwise, increases the opening;
3) the coarse filtered water filtered by the primary solid-liquid separation device enters a secondary solid-liquid separation device for fine filtration, clear water obtained after fine filtration enters a clear water tank for storage, and similarly, a controller monitors the water pressure in the secondary solid-liquid separation device in real time through a pressure sensor (meanwhile, the water pressure value in the primary solid-liquid separation device is automatically adjusted to be the original pressure value plus the water pressure value in the secondary solid-liquid separation device), and at the moment, the opening of a second electric control valve can be manually adjusted according to the water outlet condition so as to ensure the filtering flow of the primary solid-liquid separation device;
4) when the water pressure in any one of the first-stage solid-liquid separation device and the second-stage solid-liquid separation device automatically rises to the upper limit, starting the backwashing device, closing the second electric control valve and the third electric control valve, completely opening the first electric control valve, and simultaneously starting the backwashing device to perform backwashing on the coarse filter cylinder and the fine filter cylinder until the water pressure in the first-stage solid-liquid separation device and the water pressure in the second-stage solid-liquid separation device are respectively lower than preset pressure values; or the first electric control valve and the third electric control ball valve are closed, the second electric control valve is completely opened, and only the secondary solid-liquid separation device is cleaned;
5) and after the back flushing is finished, restarting the filtering program, and repeating the process until the clear water tank reaches the upper limit of the liquid level.
As shown in fig. 6, the filtering system of the present invention is applied to a drain dredging washing vehicle. The sewer dredging and cleaning vehicle is mainly used for dredging a sewer, namely the sewer is cleaned by high-pressure water, accumulated dirt is concentrated below a rainwater well, and then the sewage and the dirt are sucked into a sewage tank by adopting a dirt sucking function. The system is connected in series between the sewage tank and the clean water tank and used for filtering sewage in the sewage tank and then conveying the sewage to the clean water tank, and sewage generated after filtering is reversely discharged to the sewage tank, so that the purposes of recycling the sewage, improving the working efficiency and saving water resources are achieved.
The specific process is as follows: the dredging vehicle generates high-pressure water through a high-pressure water pump 25, cleans a sewer 14, and accumulates cleaned sewage and dirt at the well mouth of a rainwater well, and simultaneously, the dredging vehicle sucks the sewage and the dirt into a sewage tank 17 through a dirt suction pipe 15, the sewage is filtered in the sewage tank through a coarse strainer 18, the filtered sewage is stored in a filter box 16, when the sewage in the filter box reaches a certain amount, a controller starts a centrifugal separation type sewage circulating and filtering system 20, the system sucks the sewage from the filter box 16 through a sewage suction pipe 21, after internal procedures are carried out for filtering, clean water is conveyed into a clean water tank 19 through a separator water outlet pipe 24, residual sewage flows back to the sewage tank 17 through a sewage return pipe 22, when the internal devices are blocked, a signal is timely fed back to a back flush controller by a pressure sensor, the controller immediately starts a back flush procedure, clean water is sucked from the clean water tank 19 through a low-pressure water pump water suction pipe 23, and cleaning the solid-liquid separation device. The sewage is recycled until the clean water tank is full, so that the purposes of recycling the sewage and reducing the times of adding water back and forth by vehicles are achieved, the working efficiency of workers is further improved, and meanwhile, the resources are saved and the operation cost is reduced.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (6)
1. Centrifugal separation formula sewage circulating filtration system, its characterized in that: the device comprises a sewage tank, a primary solid-liquid separation device, a secondary solid-liquid separation device, a clear water tank, a working device, a reverse flushing device and a controller;
the sewage tank is used for storing sewage, the interior of the sewage tank is separated by the coarse strainer to form an upper-layer space and a lower-layer space, and the sewage is stored in the upper-layer space when being sent into the sewage tank and enters the lower-layer space after being filtered by the coarse strainer;
the water outlet of the sewage tank is connected to the sewage inlet of the primary solid-liquid separation device through a sewage pump, the sewage outlet of the primary solid-liquid separation device is connected to the water inlet of the sewage tank through a first electric control valve, the filtered water outlet of the primary solid-liquid separation device is connected to the sewage inlet of the secondary solid-liquid separation device, the sewage outlet of the secondary solid-liquid separation device is connected to the water inlet of the sewage tank through a second electric control valve, and the filtered water outlet of the secondary solid-liquid separation device is connected to the water inlet of the cleaning water tank through a third electric control;
the water outlet of the clean water tank is connected to the water inlet of the working device, and the flushing water outlet of the clean water tank is connected to the filtered water outlet of the secondary solid-liquid separation device through the reverse flushing device;
the primary solid-liquid separation device and the secondary solid-liquid separation device are respectively provided with a pressure sensor, and each pressure sensor respectively collects the water pressure in the primary solid-liquid separation device and the secondary solid-liquid separation device and feeds the water pressure back to the controller;
a liquid level meter is arranged in the sewage tank and continuously feeds back the liquid level height in the sewage tank to the controller;
the first-stage solid-liquid separation device, the second-stage solid-liquid separation device, the sewage pump, the working device, the reverse flushing device, the first electric control valve, the second electric control valve and the third electric control valve are respectively and electrically connected to the controller.
2. The centrifugal separation type sewage circulation filtering system according to claim 1, wherein: the primary solid-liquid separation device comprises a first cylinder, a first bottom plate, a first cover plate, an accelerating impeller, a coarse filter cylinder, a first filter cylinder connecting rod, a first bearing seat and a first motor, wherein the upper end of the first cylinder is connected with the first cover plate, the lower end of the first cylinder is connected with the first bottom plate, a hole site is formed in the middle of the first cover plate and is fixedly connected with the first bearing seat, the upper end of the first bearing seat is fixedly connected with a shell of the first motor, the upper end of a rotating shaft of the first bearing seat is fixedly connected with an output shaft of the first motor through a flat key, the lower end of the first bearing seat extends into the bottom of the first cover plate, and the lower end of the rotating shaft of the first bearing seat is fixedly connected; the coarse filter cylinder is fixed above the first bottom plate through a first filter cylinder connecting rod, and is nested inside the accelerating impeller, and a gap is reserved between the coarse filter cylinder and the accelerating impeller; the upper portion of first barrel side is provided with the sewage import, and the lower part of first barrel side is provided with the sewage export, sets up the drainage outlet on the first bottom plate, drainage outlet and the inside intercommunication of rough filtration section of thick bamboo.
3. The centrifugal separation type sewage circulating and filtering system according to claim 1, wherein the secondary solid-liquid separation device comprises a second cylinder, a second bottom plate, a second cover plate, a scraping blade wheel, a fine filtering cylinder, a second filtering cylinder connecting rod, a second bearing seat and a second motor, the upper end of the second cylinder is connected with the second cover plate, the lower end of the second cylinder is connected with the second bottom plate, a hole is formed in the middle of the second cover plate and fixedly connected with the second bearing seat, the upper end of the second bearing seat is fixedly connected with a shell of the second motor, the upper end of a rotating shaft of the second bearing seat is fixedly connected with an output shaft of the second motor through a flat key, the lower end of the rotating shaft of the second bearing seat extends into the bottom of the second cover plate, the lower end of the rotating shaft of the second bearing seat is fixedly connected with the scraping blade wheel through a flat key, the fine filtering cylinder is fixed above the second bottom plate through the second filtering cylinder connecting rod, the fine filtering cylinder is nested inside the scraping blade wheel, the outer surface of the scraping blade wheel is tightly attached to a front inclination angle α of the fine filtering cylinder in the clockwise rotation direction, a sewage inlet is formed in the upper portion of the side surface of the second.
4. The centrifugal separation type sewage circulation filtering system according to claim 1, wherein: the back flushing device is a low-pressure water pump.
5. The centrifugal separation type sewage circulation filtering system according to claim 1, wherein: the sewage pump is a cam pump.
6. A filtration method using the centrifugal separation type sewage circulation filtration system according to any one of claims 1 to 5, wherein: which comprises the following steps:
1) when the controller detects that the clear water tank has enough clear water through the liquid level meter, the controller instructs the working device to operate so as to ensure that the working device does not run idle due to water shortage, the working device operates by taking the clear water as a medium and generates sewage, and the sewage is conveyed to the sewage tank by a pump body in the working device to be stored;
2) when the controller detects that the sewage in the sewage tank reaches a preset amount, the controller instructs the sewage pump to start to dredge the sewage, instructs the primary solid-liquid separation device and the secondary solid-liquid separation device to start, operates according to a preset rotating speed, and instructs the first electric control valve, the second electric control valve and the third electric control valve to start, at the moment, the sewage enters the primary solid-liquid separation device after being pressurized by the sewage pump to carry out centrifugal separation and filtration, the controller monitors the water pressure in the primary solid-liquid separation device in real time through the pressure sensor, when the internal water pressure is smaller than a preset pressure range, the controller instructs the first electric control valve to close, gradually reduces the opening, stops acting when the water pressure meets the requirement, and otherwise, increases the opening;
3) the coarse filtered water filtered by the primary solid-liquid separation device enters a secondary solid-liquid separation device for fine filtration, clear water obtained after fine filtration enters a clear water tank for storage, and similarly, a controller monitors the water pressure in the secondary solid-liquid separation device in real time through a pressure sensor, and at the moment, the opening degree of a second electric control valve can be adjusted manually according to the water outlet condition so as to ensure the filtering flow of the primary solid-liquid separation device;
4) when the water pressure in any one of the first-stage solid-liquid separation device and the second-stage solid-liquid separation device automatically rises to the upper limit, starting the backwashing device, closing the second electric control valve and the third electric control valve, completely opening the first electric control valve, and simultaneously starting the backwashing device to perform backwashing on the coarse filter cylinder and the fine filter cylinder until the water pressure in the first-stage solid-liquid separation device and the water pressure in the second-stage solid-liquid separation device are respectively lower than preset pressure values; or the first electric control valve and the third electric control ball valve are closed, the second electric control valve is completely opened, and only the secondary solid-liquid separation device is cleaned;
5) and after the back flushing is finished, restarting the filtering program, and repeating the process until the clear water tank reaches the upper limit of the liquid level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010151803.2A CN111236411A (en) | 2020-03-06 | 2020-03-06 | Centrifugal separation type sewage circulating filtration system and filtration method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010151803.2A CN111236411A (en) | 2020-03-06 | 2020-03-06 | Centrifugal separation type sewage circulating filtration system and filtration method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111236411A true CN111236411A (en) | 2020-06-05 |
Family
ID=70871660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010151803.2A Pending CN111236411A (en) | 2020-03-06 | 2020-03-06 | Centrifugal separation type sewage circulating filtration system and filtration method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111236411A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114570092A (en) * | 2022-04-01 | 2022-06-03 | 中山大学 | Auxiliary device and method for filtering sundries for urban sewage treatment |
-
2020
- 2020-03-06 CN CN202010151803.2A patent/CN111236411A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114570092A (en) * | 2022-04-01 | 2022-06-03 | 中山大学 | Auxiliary device and method for filtering sundries for urban sewage treatment |
| CN114570092B (en) * | 2022-04-01 | 2022-08-23 | 中山大学 | Auxiliary device and method for filtering sundries for urban sewage treatment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211948829U (en) | Centrifugal separation type sewage circulating and filtering system | |
| CN101824855A (en) | Intelligent multifunction combined suction sewage truck | |
| CN111236411A (en) | Centrifugal separation type sewage circulating filtration system and filtration method | |
| CN212052951U (en) | Hydraulic engineering desilting device | |
| CN201943181U (en) | Intellectualized multifunctional combined sewage suction truck | |
| CN210562373U (en) | River course ecological remediation sediment removal device for hydraulic engineering | |
| CN218281931U (en) | Can remove dust clear construction waste recovery device | |
| CN212001543U (en) | Based on prefabricated for pump station blowdown circulation system of integration | |
| CN208553315U (en) | A kind of sewage treatment equipment for separating liquid from solid | |
| CN217836525U (en) | Dirty oil sludge recycling and storing device | |
| CN219470991U (en) | Foundation pit drainage device for building engineering construction | |
| CN218346221U (en) | Waterproof drainage device of hydraulic engineering construction | |
| CN217679527U (en) | Municipal administration drainage sewage pipes | |
| CN219100297U (en) | Dredging anti-blocking device | |
| CN218264168U (en) | Drainage device with quick drainage function | |
| CN218146102U (en) | Environment-friendly foundation pit dewatering recharge device | |
| CN218479243U (en) | Coal mine storehouse cleaning machine | |
| CN221230110U (en) | Mud-water separation device of sewage tank of sewage suction truck | |
| CN220268042U (en) | Anti-blocking efficient sewage pump | |
| CN219848541U (en) | Industrial wastewater regulating tank | |
| CN217580505U (en) | A high-efficient drainage device for drainage engineering | |
| CN213790393U (en) | Sludge-water separation device for sewage treatment convenient to clearance | |
| CN220424695U (en) | Filtering device with water resource recovery function | |
| CN218933262U (en) | Engineering dredging box | |
| CN215161680U (en) | Improved generation sewage treatment circulation deposits device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |